CN209499188U - Folding seat is adjustable to lean on leg device - Google Patents

Abstract

The utility model relates to an adjustable legrest device of a folding chair, comprising: a folding chair, a legrest pipe, a rotatable support device or a slidable support device or a telescopic support device, a cross pipe, a fork pipe hinge, a rotating part, Sliding sleeve or sliding rotating assembly, extendable tube footrest device, rotatable support device or slidable support device or telescopic support device is installed at both ends of the front leg tube and front seat tube of the folding chair, and sliding sleeves are installed on these support devices Or the sliding rotating assembly and the cross pipe hinge and the cross pipe hinged with the leg pipe respectively, slide up or down along these supporting devices or slide and rotate the sliding sleeve or sliding rotating assembly to change their position on these supporting devices position, the folding chair can adjust the leg tube in the sitting position, and change the lifting height of the leg tube, that is, the leg tube can be lifted to become a folding chair with a leg chair, and the leg tube can also be put down and stowed to become a general non-functional chair. Folding chair with legs.

Description

Adjustable legrest device for folding chair

technical field

The utility model relates to furniture products, in particular to an adjustable leg resting device for outdoor travel and leisure folding chairs.

Background technique

In the existing folding chairs of tourism and leisure folding products, the legrest devices of the folding chairs are all fixed. It can’t be adjusted, and can only rely on and support the heel or the part below the ankle, and can’t rely on and support the big and small legs, so the comfort is very poor; even if you can rely on and support the big and small legs and adjust the folding chair, It is also when the back tube is lying down and sitting up, the movement of the armrest tube is used to drive and adjust the retraction and lifting of the front leg tube. The structure is quite complicated, and it is impossible to lift the leg in a sitting position. The rigidity of the folding chair structural system is also difficult to meet the requirements. In most cases, people prefer to freely adjust the footrest and calf device without adjusting the backrest tube, so that when the folding chair is used as a seat, it can realize the function of adjusting the leaning and supporting the large and small legs, that is, folding When the chair is in a sitting posture, the functions of leaning on the feet and legs can be adjusted simply and easily.

Contents of the invention

The purpose of this utility model invention is to provide an adjustable footrest and legrest device for outdoor travel and leisure folding chairs, so that it can be used as a seat, and can also be used as a legrest and footrest. In the state of the folding chair in the sitting posture, it can be simply and easily adjusted to change the state of leaning on the feet and leaning on the legs. The object of the present invention is achieved through the following measures:

An adjustable legrest device for a folding chair, comprising: a folding chair (1), a telescopic supporting device (101, 102, 104, 109, 201, 202, 209, 301, 302, 309, 401, 402, 409), Swivel hinge (105), leg tube (106), cross tube (108), cross tube hinge (107), sliding sleeve (103) or sliding swivel assembly (701, 702, 704, 705), also includes extendable The tube-to-foot device (111, 112, 113, 311, 312) is characterized in that a telescopic support device is installed between the front seat tube (1.1) and the front leg tube (1.2) of the folding chair, and the sliding sleeve or sliding rotating assembly slides along the telescopic support device Or slide and rotate, the leg tube is hinged with the front seat tube through the rotating hinge, the leg tube and the sliding sleeve or the leg tube and the sliding rotating assembly are connected as a whole by the cross tube and the cross tube hinge, changing the sliding sleeve or sliding rotation The position of the component on the telescopic support device can change the lifting height of the leg pipe, and the front end of the leg pipe can be installed with an extendable pipe foot device to extend the length of the foot. After the folding chair is unfolded, the position of the sliding sleeve is adjusted up and down or the sliding assembly is rotated and adjusted, so that the legrest tube can be raised or lowered, and the length of the legrest can be extended or contracted.

In order to achieve the adjustable leg tube of the folding chair and facilitate the unfolding and folding of the folding chair, the telescopic support device in the adjustable leg device of the folding chair is divided into an outer tube (101, 201, 301, 401) and an inner pumping tube (109, 209, 309, 409), the outer sleeve can be hinged with the front leg pipe (1.2), and the inner pumping tube is hinged with the front seat tube (1.1) via the upper hinge (102, 202, 302, 402); the outer sleeve can also be It is hinged with the front seat tube, and the inner pumping tube can also be hinged with the front leg tube through the upper hinge; the outer tube and the inner pumping tube can be twitched relative to each other, and a limiter (104) is installed on the outer tube to limit the sliding and rotating assembly. slide position.

An adjustable legrest device for a folding chair, comprising: a folding chair (1), a slidable support device (501, 502), a rotating hinge (105), a legrest pipe (106), a cross pipe (108), and a cross pipe hinge (107), sliding sleeve (103) or sliding rotating assembly (701, 702, 704, 705), also includes an extendable tube foot rest device (111, 112, 113, 311, 312), which is characterized in that the front seat tube of the folding chair ( A slidable support device (501, 502) is installed between 1.1) and the front leg tube (1.2), the sliding sleeve or sliding rotating assembly slides or slides and rotates along the slidable support device (501, 502), and the leg tube is The hinge is hinged with the front seat tube, the leg tube and the sliding sleeve or the leg tube and the sliding rotating assembly are connected as a whole by the cross pipe and the cross pipe hinge, changing the position of the sliding sleeve or sliding rotating assembly on the slidable support device, The lifting height of the leg pipe can be changed, and the front end of the leg pipe can be installed with an extendable pipe foot device, which can be rotated to extend the length of the foot. Between the leg tube and the sliding sleeve or between the leg tube and the sliding rotating assembly, the cross tube hinge is connected as a whole with the cross tube. After the folding chair is unfolded, the position of the sliding sleeve is adjusted up and down or the sliding assembly is rotated and adjusted, so that the legrest tube can be raised or lowered, and the length of the legrest can be extended or contracted.

In order to achieve the adjustable leg tube of the folding chair and facilitate the unfolding and folding of the folding chair, the slidable support device in the adjustable leg device of the folding chair is composed of a support tube (501) and a support sliding sleeve (502). One end of the support tube can be hinged with the front leg tube, and the other end is hinged with the support sleeve, and the support sleeve is mounted on the front seat tube for relative sliding; similarly, one end of the support tube can also be hinged with the front seat tube, and the other end is hinged with the support sleeve to support The sliding sleeve is mounted on the front leg tube for relative sliding; the support tube is equipped with a limit piece (104), which can limit the sliding position of the sliding rotating assembly.

An adjustable legrest device for a folding chair, comprising: a folding chair (1), a rotatable support device (601, 602, 604), a rotating hinge (105), a legrest pipe (106), a cross pipe (108), a cross The pipe hinge (107), the sliding sleeve (103) or the sliding rotating assembly (701, 702, 704, 705), also includes the extendable pipe footrest device (111, 112, 113, 311, 312), which is characterized in that the front seat of the folding chair A rotatable supporting device (601, 602, 604) is installed between the tube (1.1) and the front leg tube (1.2), and the sliding sleeve or sliding rotating assembly slides or slides and rotates along the rotatable supporting device (601, 602, 604) , the leg tube is hinged with the front seat tube via the rotating hinge, the leg tube and the sliding sleeve or the leg tube and the sliding rotating assembly are connected as a whole by the cross pipe and the cross pipe hinge, changing the sliding sleeve or sliding rotating assembly in a rotatable The position on the supporting device can change the lifting height of the leg pipe, and the front end of the leg pipe can be installed with an extendable pipe foot device, which can be rotated to extend the length of the foot. After the folding chair is unfolded, the position of the sliding sleeve is adjusted up and down or the sliding assembly is rotated and adjusted, so that the legrest tube can be raised or lowered, and the length of the legrest can be extended or contracted.

In order to be able to adjust the legrest of the folding chair and facilitate the unfolding and folding of the folding chair, the rotatable support device in the adjustable legrest device of the folding chair is divided into a supporting rotating pipe (601), a rotating pipe (602), and a supporting hinge One end of the supporting rotating tube (601) is hinged with the front leg tube (6.2), the other end is equipped with a supporting hinge (604), hinged with the rotating tube (602), the other end of the rotating tube (602) is hinged with the front seat The tube (6.1) is hinged. A stopper (703) is installed on the supporting rotating tube, which can limit the sliding position of the sliding rotating assembly.

In order to facilitate the lifting and lowering of the legrest tube of the adjustable folding chair, the sliding sleeve (103) in the adjustable legrest device of the folding chair is sleeved on the outer sleeve (101) of the telescopic support device, the slidable support device or the rotatable support device. , 201, 301, 401), on the support tube (501) or on the support rotation tube (601), and can slide along the outer sleeve, support tube (501) or support rotation tube, and the sliding sleeve is provided with an arc handle (103.1, 315, 508) and elastic right-angle jaws (314) or elastic arc turn cards (509). The cross tube hinge (107) is installed on the inside of the sliding sleeve, which is rigidly hinged to the leg tube (106) via the cross tube (108) and the cross tube hinge at the other end, and the lifting of the leg tube can be adjusted by sliding the sliding sleeve up and down. The lifting and lowering heights can be positioned by elastic right-angle claws (314) or elastic arc-shaped swivels (509).

In order to adjust the lifting and lowering of the legrest tube of the folding chair, the sliding and rotating assembly in the adjustable legrest device of the folding chair consists of a sliding part (701), a rotating rod (702), a limiter (104), and a friction sticker. block (704) and a supporting piece (705), which is characterized in that the sliding piece (701) is set on the outer sleeve (101, 201, 301, 401) of the telescopic support device, the slidable support device or the rotatable support device, On the supporting tube (501) or on the supporting rotating tube (601), one end of the rotating rod (702) is hinged to the slider (701), and the other end is hinged to the supporting member (705), and a friction block (704) is installed in the middle. After adjusting the positioning, the positioning rigidity can be improved. The stopper (104) is installed in the middle of the telescopic support device, the slidable support device or the rotatable support device. The sliding and rotating assembly can be within a certain range. The hinge point of (701) rotates, and on the other hand can also slide along the telescopic support device, the slidable support device or the rotatable support device. The cross pipe hinge (107) is installed on the inner side of the sliding and rotating assembly, which is rigidly hinged to the leg pipe (106) via the cross pipe (108) and the cross pipe hinge at the other end, and the sliding and rotating assembly can be adjusted by sliding and rotating. Lifting and lowering of the leg tube.

In the adjustable leg rest device of a folding chair, in order to prolong the length of the leg pipe, an extendable pipe foot rest device is provided, including an extension pipe (113), a clamping piece (112, 312), and an extension rotating hinge (111, 311), which is characterized in that The extension pipe (113) of the extendable pipe footrest device is hingedly installed on the front end of the footrest pipe (106) by extending the rotating hinge (111, 311) and the clamp (112, 312), and the extension pipe (113) can pass through the clamp (112) and the common hinge point (111.1) of the extended pivot hinge (111) with the leg pipe (106) are hinged and rotated in the same plane, and when the extendable leg device is deployed, the leg pipe and the extension pipe can be rigidly limited connection, the extension pipe (113) can also be hinged and rotated by the clamped part (312) in different planes through the common hinge point (311.1) of the leg pipe (106) through the extension hinge (311), and the extension can be extended. When the foot is installed, the foot pipe and the extension pipe can be rigidly limited in connection.

In similar folding chairs, such as a folding director's chair, the adjustable legrest device of this folding chair can also be used.

The utility model invention adopts above-mentioned technical scheme, and its advantage is:

1. The adjustable legrest device of the folding chair solves the problem that the front legrest and the footrest can be adjusted simply and conveniently in the sitting position in the folding chair, that is to say, there is no need to change the position of the back tube or the armrest tube And state, just by adjusting the sliding or rotating position of the front cross tube, you can adjust the position of the leg tube, so as to realize the leg and foot status of the folding chair.

2. The adjustable legrest device of the folding chair is adopted. Since the back tube and armrest tube of the folding chair are not used to adjust the legrest device, the folding chair maintains a high system rigidity, and the system rigidity of the folding chair will not be affected by the adjustable It is changed by the adjustment of the leg unit.

3. The structure of the extendable tube footrest device of the adjustable legrest device of the folding chair adopts the same plane and different parallel planes to clamp the hinge structure, so that the connection rigidity of the extension footrest device is greatly improved.

4. The adjustable legrest device of the folding chair ensures that the legrest device can be adjusted in a sitting position, the structure is simpler, the processing technology is easier, and the manufacturing cost is lower.

5. The adjustable legrest device of the folding chair is adopted. Due to the simple structure, the volume of the folded package does not increase much, and it is more convenient to carry and use outdoors.

Description of drawings

Fig. 1 is the adjustable legrest device of the folding chair of the utility model, which adopts the telescopic support device and the sliding sleeve structure, the folding chair (1) is unfolded, the legrest pipe is fully lifted, and the axonometric perspective view when the extendable pipe footrest device is unfolded .

Fig. 2 is the axonometric perspective view of the adjustable legrest device of the folding chair of the present invention, which adopts a telescopic support device and a sliding sleeve structure, the folding chair (1) is unfolded, and the legrest pipe and the extensible pipe footrest device are all folded up.

Fig. 3 is an axonometric perspective view of the adjustable legrest device of the utility model folding chair, which adopts a telescopic support device and a sliding sleeve structure, the folding chair (1) is folded, and the legrest tube and the extensible tube footrest device are all folded up.

Figure 4 is an adjustable legrest device for a folding chair of the present invention, which adopts a telescopic support device and a sliding sleeve structure. When the folding chair (1) is unfolded and the legrest tube is fully lifted, the sliding sleeve slides to the end on the telescopic support device Local enlarged view of time.

Fig. 5 is a partial enlarged view of the adjustable legrest device of the folding chair of the present invention, the extendable pipe footrest device is hinged in the same plane, and the legrest pipe and the extension pipe are fully unfolded.

Fig. 6 is a partial enlarged view of the adjustable legrest device of the folding chair of the utility model, the extendable pipe footrest device is hinged in the same plane, and the legrest pipe and the extension pipe are both retracted.

Fig. 7 is an axonometric perspective view of the adjustable legrest device of the folding chair of the present invention, which adopts a telescopic support device and a sliding and rotating assembly structure, the folding chair (1) is unfolded, and the legrest tube is fully lifted.

Fig. 8 is an axonometric perspective view of the adjustable legrest device of the folding chair of the present invention, which adopts a telescopic support device and a sliding and rotating assembly structure, the folding chair (1) is unfolded, and the legrest tube is folded up.

Fig. 9 is an axonometric perspective view of the adjustable legrest device of the folding chair of the present invention, which adopts a telescopic support device and a sliding and rotating assembly structure, the folding chair (1) is folded, and the legrest tube is folded.

Fig. 10 is an axonometric perspective view of the adjustable legrest device of the folding chair of the present invention, which adopts a telescopic support device and a sliding sleeve structure, the folding chair (2) is unfolded, and the legrest tube is fully lifted.

Fig. 11 is an axonometric perspective view of the adjustable legrest device of the folding chair of the present invention, which adopts a telescopic support device and a sliding sleeve structure, the folding chair (2) is unfolded, and the legrest tube is folded up.

Fig. 12 is an axonometric perspective view of the adjustable legrest device of the folding chair of the present invention, which adopts a telescopic support device and a sliding sleeve structure, the folding chair (2) is folded, and the legrest tube is retracted.

Fig. 13 is an axonometric perspective view of the adjustable legrest device of a folding chair of the present invention, which adopts a telescopic support device and a sliding rotating component structure, the folding chair (2) is unfolded, and the legrest tube is fully lifted.

Fig. 14 is an axonometric perspective view of the adjustable legrest device of a folding chair of the present invention, which adopts a telescopic support device and a sliding and rotating assembly structure, the folding chair (2) is unfolded, and the legrest tube is folded up.

Fig. 15 is an axonometric perspective view of the adjustable legrest device of a folding chair of the present invention, which adopts a telescopic support device and a sliding and rotating assembly structure, the folding chair (2) is folded, and the legrest tube is folded.

Fig. 16 is the adjustable legrest device of the folding chair of the utility model, which adopts the telescopic support device and the sliding sleeve structure, the folding chair (3) is unfolded, the legrest pipe is fully lifted, and the axonometric perspective view when the extendable pipe footrest device is unfolded .

Fig. 17 is an axonometric perspective view of the adjustable legrest device of a folding chair of the present invention, which adopts a telescopic support device and a sliding sleeve structure, the folding chair (3) is unfolded, and the legrest tube and the extendable tube footrest device are all folded up.

Fig. 18 is an axonometric perspective view of the adjustable legrest device of a folding chair of the present invention, which adopts a telescopic support device and a sliding sleeve structure, the folding chair (3) is folded, and the legrest tube and the extensible tube footrest device are all folded up.

Figure 19 is an adjustable legrest device for a folding chair of the utility model, which adopts a telescopic support device and a sliding sleeve structure. When the folding chair (3) is unfolded and the legrest tube is fully lifted, the sliding sleeve slides to the end on the telescopic support device Local enlarged view of time.

Figure 20 is the adjustable legrest device of the folding chair of the utility model, which adopts the telescopic support device and the sliding and rotating component structure, the folding chair (3) is unfolded, the legrest tube is fully lifted, and the axonometric measurement of the extendable tube footrest device is unfolded stereogram.

Fig. 21 is a partial enlarged view of the adjustable legrest device of the folding chair of the present invention, the extendable tube footrest device is hinged in different planes, and the legrest tube and the extension tube are fully unfolded.

Fig. 22 is an axonometric perspective view of the adjustable legrest device of a folding chair of the present invention, which adopts a telescopic support device and a sliding and rotating assembly structure, the folding chair (3) is unfolded, and the legrest tube and the extendable tube footrest device are both folded up. .

Fig. 23 is the adjustable legrest device of the folding chair of the utility model, which adopts the retractable support device and the sliding sleeve structure, the folding chair (4) is unfolded, and the lateral front view when the legrest tube is fully lifted.

Fig. 24 is an axonometric perspective view of the adjustable legrest device of the folding chair of the present invention, which adopts a telescopic support device and a sliding sleeve structure, the folding chair (4) is unfolded, and the legrest tube is folded up.

Fig. 25 is an axonometric perspective view of the adjustable legrest device of the folding chair of the present invention, which adopts a telescopic support device and a sliding sleeve structure, the folding chair (4) is folded, and the legrest tube is folded up.

Fig. 26 is the adjustable legrest device of the folding chair of the utility model, which adopts the telescopic support device and the sliding rotating component structure, the folding chair (4) is unfolded, and the lateral front view when the legrest pipe is fully lifted.

Fig. 27 is an axonometric perspective view of the adjustable legrest device of the folding chair of the present invention, which adopts a telescopic support device and a sliding rotating assembly structure, the folding chair (4) is unfolded, and the legrest tube is folded up.

Fig. 28 is an axonometric perspective view of the adjustable legrest device of a folding chair of the present invention, which adopts a telescopic support device and a sliding and rotating assembly structure, the folding chair (4) is folded, and the legrest tube is folded.

Fig. 29 is an axonometric perspective view of the adjustable legrest device of the folding chair of the present invention, which adopts a slidable support device and a sliding sleeve structure, the folding chair (5) is unfolded, the legrest pipe is fully lifted, and the extendable pipe footrest device is unfolded .

Fig. 30 is an axonometric perspective view of the adjustable legrest device of a folding chair of the present invention, which adopts a slidable support device and a sliding sleeve structure, the folding chair (5) is unfolded, and the legrest tube and the extendable tube footrest device are all folded up.

Figure 31 is an adjustable legrest device for a folding chair of the utility model, which adopts a slidable support device and a sliding sleeve structure. When the folding chair (5) is unfolded and the legrest tube is fully lifted, the sliding sleeve slides on the extendable sliding support device A partial enlarged view of the terminal.

Fig. 32 is a partial enlarged view of the adjustable legrest device of the folding chair of the utility model, the extendable tube footrest device is hinged in the same plane, and the legrest tube and the extension tube are all folded up.

Fig. 33 is the adjustable legrest device of the folding chair of the utility model, which adopts a slidable support device and a sliding rotating component structure, the axonometric perspective view when the folding chair (5) is unfolded and the legrest tube is fully lifted.

Fig. 34 is an axonometric perspective view of the adjustable legrest device of the folding chair of the present invention, which adopts a slidable support device and a sliding rotating assembly structure, the folding chair (5) is unfolded, and the legrest tube is folded up.

Fig. 35 is an axonometric perspective view of the adjustable legrest device of the folding chair of the present invention, which adopts a rotatable support device and a sliding sleeve structure, the folding chair (6) is unfolded, and the legrest tube is fully lifted.

Fig. 36 is an axonometric perspective view of the adjustable legrest device of the folding chair of the present invention, which adopts a rotatable support device and a sliding sleeve structure, the folding chair (6) is unfolded, and the legrest tube is folded up.

Fig. 37 is an axonometric perspective view of the adjustable legrest device of the folding chair of the present invention, which adopts a rotatable support device and a sliding sleeve structure, the folding chair (6) is folded, and the legrest tube is folded up.

Fig. 38 is an axonometric perspective view of the adjustable legrest device of a folding chair of the present invention, which adopts a rotatable support device and a sliding rotating assembly structure, the folding chair (6) is unfolded, and the legrest tube is fully lifted.

Fig. 39 is an axonometric perspective view of the adjustable legrest device of a folding chair of the present invention, which adopts a rotatable support device and a sliding rotating component structure, the folding chair (6) is unfolded, and the legrest tube is folded up.

Fig. 40 is an axonometric perspective view of the adjustable legrest device of a folding chair of the present invention, which adopts a rotatable support device and a sliding rotating assembly structure, the folding chair (6) is folded, and the legrest tube is folded.

Detailed ways

Referring to Fig. 1 to Fig. 28 and Fig. 32, the adjustable legrest device of a folding chair includes: a folding chair (1), a telescopic support device (101, 102, 104, 109, 201, 202, 209, 301, 302, 304 , 309, 401, 402, 409), rotary hinge (105), leg tube (106), cross tube (108), cross tube hinge (107), sliding sleeve (103) or sliding rotating assembly (701, 702 , 704,705), also includes extendable tube footrest device (111, 112, 113, 311, 312), and telescopic support device is installed between the front seat tube (1.1) and the front leg tube (1.2) of folding chair , the sliding sleeve or the sliding rotating assembly slides or slides and rotates along the telescopic support device, the leg pipe is hinged with the front seat pipe via the rotating hinge, the leg pipe and the sliding sleeve or the leg pipe and the sliding rotating assembly are connected by a cross pipe and a cross The hinges of the tubes are connected as a whole. When the folding chair is unfolded, slide the sliding sleeve upwards or turn it upwards and slide the sliding rotating assembly, and the cross tube hinges and the cross tubes can drive the leg tubes to lift up to a height that can be unfolded upwards. In the state of the legrest, when sliding the sliding sleeve downward or turning it downward and sliding the sliding rotating assembly, the legrest pipe can be driven to rotate around the rotating hinge through the cross pipe hinge and the cross pipe, and then retracted downward. When the legrest is stowed When the folding chair is folded again, the front seat tube is lifted, and the upper hinge in the telescopic support device is lifted upwards and rotated by the front seat tube hinged with it, driving the inner pumping tube to pull out the outer tube, and the front leg tube also follows Rotate the hinge and retract inwardly. At this time, under the action of folding the folding chair, the cross tube lifts up the cross tube through the cross tube hinge located on the upper part of the front leg tube. At the same time, during the changing movement of the cross tube, Push the sliding sleeve or the sliding rotating assembly to slide along the outer sleeve or the inner drawer tube through the lower cross tube hinge, so that the adjustable leg rest device is folded with the folding chair, and finally folded into a stick or column shape.

In order to be able to adjust the legrest of the folding chair and facilitate the unfolding and folding of the folding chair, the telescopic support device in the adjustable legrest device of the folding chair is divided into an outer casing (101, 201, 301, 401) and an inner pumping pipe. Pumping pipes (109, 209, 309, 409), the outer casing can be hinged with the front leg tube, and the inner pumping pipe can be hinged with the front seat tube through the upper hinge; similarly, the outer casing can also be hinged with the front seat tube, and the inner pumping pipe can be hinged with the front seat tube through the upper hinge The part can also be hinged with the front leg pipe; the outer casing and the inner pumping pipe can be twitched relatively without being pulled out and separated. A limit piece (104) is installed on the outer casing to limit the sliding position of the sliding sleeve or the sliding rotating assembly. Make the leg tube can be lifted horizontally.

In order to adjust the lifting and lowering of the legrest of the folding chair, the sliding sleeve in the adjustable legrest device of the folding chair is set on the telescopic support device and can slide along the outer sleeve. The sliding sleeve is provided with an arc handle (103.1, 315) and elastic right-angle jaws (314). The inner side of the sliding sleeve is equipped with a cross tube hinge, which is hinged through the cross tube and the other end of which is hinged with the leg tube. Slide the sliding sleeve up and down the outer sleeve to adjust the lifting and lowering height of the leg tube , and the position can be locked by elastic right-angle claws, or a small sliding friction angle can be formed to prevent the sliding sleeve from sliding down.

In order to adjust the lifting and lowering of the legrest tube of the folding chair, the sliding and rotating assembly in the adjustable legrest device of the folding chair consists of a sliding part (701), a rotating rod (702), a limiter (104), and a friction sticker. Block (704) and supporting piece (705), the sliding piece is set on the outer sleeve of the telescopic support device, one end of the rotating rod is hinged with the sliding piece, the other end is hinged with the supporting piece, and a friction block is installed in the middle, in order to make the adjustment and positioning Afterwards, the positioning rigidity can be improved, and the stopper device is located in the middle of the outer casing (101, 201, 301, 401). The sliding and rotating assembly can be within a certain range, on the one hand, it can rotate around the hinge point of the sliding part, on the other hand It can also slide along the telescoping support. The inner side of the sliding rotating assembly is equipped with a cross pipe hinge, through which the cross pipe and the other end are hinged with the cross pipe hinge hinged with the leg pipe, sliding and rotating the sliding rotating assembly can adjust the lifting and lowering of the leg pipe, and After the front leg tube is lifted, the sliding and rotating assembly can be in a self-locking state.

In the adjustable leg rest device of a folding chair, in order to prolong the length of the leg pipe, an extendable pipe foot rest device is provided, and the extendable pipe foot rest device includes an extension pipe (113), a clamping piece (112, 312), and an extension rotating hinge ( 111,311), the extension pipe (113) of the extendable pipe footrest device is hingedly installed on the front end of the footrest pipe (106) by extending the rotating hinge (111,311) and the clamping piece (112,312), wherein the extension pipe (113) It can be articulated and rotated in the same plane through the common hinge point (111.1) of the clamping piece (112) and the extension hinge (111) at the front end of the leg pipe (106). When the extendable leg device is deployed, the leg pipe and the extension The tube can be connected in a rigid position-limiting manner. Similarly, the extension tube (113) can also be hinged and rotated in different planes with the common hinge point (311.1) of the extension hinge (311) at the front end of the leg tube (106), and finally be clamped. Part (312) spacing, when launching the extendable footrest device, the footpipe and the extension pipe can be rigidly spaced and connected. Rigid hinges on different planes are used, and after folding, the package volume after folding is not increased. Rigid hinges on the same plane are used, and the package volume will be slightly increased after folding.

Referring to Fig. 29 to Fig. 34 and Fig. 5, Fig. 6 and Fig. 21, the adjustable legrest device of the folding chair includes: the folding chair (1), the slidable supporting device (501, 502), the rotating hinge (105), the footrest Tube (106), cross tube (108), cross tube hinge (107), sliding sleeve (103) or sliding rotating assembly (701, 702, 104, 704, 705), also includes an extendable tube foot rest device, which It is characterized in that a slidable supporting device (501, 502) is installed between the front seat tube (1.1) and the front leg tube (1.2) of the folding chair, and the sliding sleeve or sliding rotating assembly slides along the slidable supporting device (501, 502) or Sliding and turning, the leg tube is hinged with the front seat tube through the rotating hinge, and the leg tube and the sliding sleeve or the leg tube and the sliding rotating assembly are connected as a whole by the cross tube and the cross tube hinge. When the folding chair is unfolded, the upward Slide the sliding sleeve or turn it upwards and slide the sliding rotating assembly to drive the leg tube to lift the height through the cross tube hinge and cross tube, and expand it upwards to reach the state of being able to lean on the legs. When sliding the sliding sleeve down or turning it down And slide the rotating assembly, the cross tube hinge and the cross tube can be used to drive the leg tube to rotate and fold down. When the leg tube is folded and the folding chair is folded, the front seat tube is lifted. The support tube (501) in the slidable support device pulls the support sliding sleeve (502) to slide down along the front seat tube (1.1), and the front leg tube hinges with the rotation and is retracted inward. At this time, the cross tube is folded on the folding chair Under the action of the cross tube, on the one hand, the cross tube is lifted up through the cross tube hinge located at the upper part of the front leg tube. 501) to slide, so that the adjustable legrest device is folded along with the folding chair, and finally folded into a stick-shaped or column-shaped device.

In order to achieve the adjustable leg tube of the folding chair and facilitate the unfolding and folding of the folding chair, the slidable support device in the adjustable leg device of the folding chair is composed of a support tube (501) and a support sliding sleeve (502). One end of the support tube can be hinged with the front leg tube, and the other end is hinged with the support sleeve, and the support sleeve is mounted on the front seat tube for relative sliding; similarly, one end of the support tube can also be hinged with the front seat tube, and the other end is hinged with the support sleeve to support The sliding sleeve is mounted on the front leg tube for relative sliding; the support tube is equipped with a limit piece (104), which can limit the sliding position of the sliding rotating assembly.

In order to adjust the lifting and lowering of the legrest of the folding chair, the sliding sleeve in the adjustable legrest device of the folding chair is set on the support tube of the slidable support device and can slide along the support tube. The sliding sleeve is provided with an arc Shaped handle (508) and elastic curved turn card (509). The inner side of the sliding sleeve is equipped with a cross tube hinge, which is hinged through the cross tube and the other end of which is hinged with the leg tube. Slide the sliding sleeve up and down the support tube to adjust the lifting and lowering height of the leg tube , and the position can be locked by elastic right-angle claws, or a small sliding friction angle can be formed to prevent the sliding sleeve from sliding down.

In order to adjust the lifting and lowering of the legrest tube of the folding chair, the sliding and rotating assembly in the adjustable legrest device of the folding chair consists of a sliding part (701), a rotating rod (702), a limiter (104), and a friction sticker. block (704) and support piece (705), the slide piece is set on the support pipe of the slidable support device, one end of the rotating rod is hinged with the slide piece, and the other end is hinged with the support piece, and a friction block is installed in the middle, in order to make the adjustment and positioning Finally, the positioning rigidity can be improved, and the quick stop device is located in the middle of the support tube (501). The sliding and rotating assembly can be within a certain range. The device slides. The inner side of the sliding rotating assembly is equipped with a cross pipe hinge, through which the cross pipe and the other end are hinged with the cross pipe hinge hinged with the leg pipe, sliding and rotating the sliding rotating assembly can adjust the lifting and lowering of the leg pipe, and After the front leg tube is lifted, the sliding and rotating assembly can be in a self-locking state.

In the adjustable leg rest device of a folding chair, in order to prolong the length of the leg pipe, an extendable pipe foot rest device is provided, and the extendable pipe foot rest device includes an extension pipe (113), a clamping piece (112, 312), and an extension rotating hinge ( 111,311), the extension pipe (113) of the extendable pipe footrest device is hingedly installed on the front end of the footrest pipe (106) by extending the rotating hinge (111,311) and the clamping piece (112,312), wherein the extension pipe (113) It can be articulated and rotated in the same plane through the common hinge point (111.1) of the clamping piece (112) and the extension hinge (111) at the front end of the leg pipe (106). When the extendable leg device is deployed, the leg pipe and the extension The tube can be connected in a rigid position-limiting manner. Similarly, the extension tube (113) can also be hinged and rotated in different planes with the common hinge point (311.1) of the extension hinge (311) at the front end of the leg tube (106), and finally be clamped. Part (312) spacing, when launching the extendable footrest device, the footpipe and the extension pipe can be rigidly spaced and connected. Rigid hinges on different planes are used, and after folding, the package volume after folding is not increased. Rigid hinges on the same plane are used, and the package volume will be slightly increased after folding.

Referring to Fig. 35 to Fig. 40 and Fig. 5, Fig. 6, Fig. 21, Fig. 32, the adjustable legrest device of the folding chair includes: the folding chair (1), the rotatable supporting device (601, 602, 604), the rotating hinge ( 105), leg tubes (106), cross tubes (108), cross tube hinges (107), sliding sleeves (103) or sliding swivel assemblies (701, 702, 104, 704, 705), and extendable tubes The footrest device is characterized in that a rotatable support device (601, 602, 604) is installed between the front seat tube (1.1) and the front leg tube (1.2) of the folding chair, and the sliding sleeve or sliding rotating assembly is arranged along the rotatable support device. (601, 602, 604) slide or slide and rotate, the leg tube is hinged with the front seat tube via the rotating hinge, the leg tube and the sliding sleeve or the leg tube and the sliding rotating assembly are connected by a cross tube and a cross tube hinge One piece, when the folding chair is unfolded, slide the sliding sleeve upwards or turn it upwards and slide the sliding rotating assembly, then the legrest can be lifted up through the cross pipe hinge and the cross pipe, and then unfolded upwards to reach the state of being able to lean on the legs. Slide the sliding sleeve down or turn it down and slide the sliding rotation assembly, and the leg tube can be driven to rotate around the hinge through the cross tube hinge and the cross tube, and then folded down when the leg tube is folded up When the chair is folded, the front seat tube is lifted, the rotating tube (602) rotates, and the supporting rotating tube (601) is driven to rotate at the same hinge point, and the front leg tube is hinged with the rotation and is retracted inwardly. At this time, the cross tube is folding Under the effect of chair folding, on the one hand, the cross tube is lifted upward through the cross tube hinge located at the upper part of the front leg tube, and at the same time, during the changing movement of the cross tube, the sliding sleeve or the sliding rotating assembly is pushed along the support through the cross tube hinge at the lower part. The rotating tube (601) slides, so that the adjustable legrest device is folded along with the folding chair, and finally folded into a handful, in the shape of a stick or a column.

In order to be able to adjust the legrest of the folding chair and facilitate the unfolding and folding of the folding chair, the rotatable support device in the adjustable legrest device of the folding chair is divided into a supporting rotating pipe (601), a rotating pipe (602), and a supporting hinge One end of the supporting rotating tube is hinged with the front leg tube (6.2), the other end is equipped with a supporting hinge (604), hinged with the rotating tube (602), and the other end of the rotating tube (602) is hinged with the front seat tube (6.1 ) hinged. A stopper (104) is installed on the supporting rotating tube, which can limit the sliding position of the sliding rotating assembly.

In order to facilitate the lifting and lowering of the legrest tube of the folding chair, the sliding sleeve in the adjustable legrest device of the folding chair is set on the support rotation tube (601) of the rotatable support device, and can slide along the support rotation tube, The sliding sleeve may be provided with arc handles (111, 315, 508) and elastic right-angle claws (314). The inner side of the sliding sleeve is equipped with a cross pipe hinge (107), which is hinged via the cross pipe (108) and the other end of which is hinged with the leg pipe (106), and slides the sliding sleeve up and down on the supporting rotating pipe, then Adjust the lifting and lowering height of the leg tube, and can be positioned by the elastic right-angle claw (314), or can also form a small sliding friction angle to prevent the sliding sleeve from sliding downward.

In order to adjust the lifting and lowering of the legrest tube of the folding chair, the sliding and rotating assembly in the adjustable legrest device of the folding chair consists of a sliding part (701), a rotating rod (702), a limiter (104), and a friction sticker. Block (704) and supporting piece (705), the sliding piece is set on the supporting rotating tube (601) of the rotatable supporting device, one end of the rotating rod is hinged with the sliding piece, the other end is hinged with the supporting piece, and a friction sticking block is installed in the middle. In order to improve the positioning rigidity after adjusting the positioning, the fast limiting device is at the middle position of the supporting rotating tube, and the sliding rotating assembly can be within a certain range. The sliding support device slides. The inner side of the sliding rotating assembly is equipped with a cross pipe hinge, through which the cross pipe and the other end are hinged with the cross pipe hinge hinged with the leg pipe, sliding and rotating the sliding rotating assembly can adjust the lifting and lowering of the leg pipe, and After the front leg tube is lifted, the sliding and rotating assembly can be in a self-locking state.

In the adjustable leg rest device of a folding chair, in order to prolong the length of the leg pipe, an extendable pipe foot rest device is provided, and the extendable pipe foot rest device includes an extension pipe (113, 313), a clamping piece (112, 312), an extension rotating hinge ( 111, 311), the extension tube (113) of the extendable tube footrest device is hingedly installed on the front end of the footrest tube (106) by extending the rotating hinge (111, 311) and the clamping piece (112, 312), wherein the extension tube (113) It can be articulated and rotated in the same plane through the common hinge point (111.1) of the extension hinge (111) of the clamping piece (112) and the front end of the leg pipe (106). When the extendable leg device is deployed, the leg pipe and the extension The tube can be connected in a rigid position-limiting manner. Similarly, the extension tube (113) can also be hinged and rotated in different planes with the common hinge point (311.1) of the extension hinge (311) at the front end of the leg tube (106), and finally be clamped. Part (312) spacing, when launching the extendable footrest device, the footpipe and the extension pipe can be rigidly spaced and connected. Rigid hinges on different planes are used, and after folding, the package volume after folding is not increased. Rigid hinges on the same plane are used, and the package volume will be slightly increased after folding.

The above is only the implementation of the utility model invention, it should be pointed out that, for those of ordinary skill in the art, without departing from the premise of the utility model inventive concept, improvements can also be made, but these All belong to the protection scope of the utility model invention.

Claims (15)

1. Leg device is leaned on 1. a kind of folding seat is adjustable, comprising: folding seat (1), telescopic supporter (101,102,104,109, 201,202,209,301,302,309,401,402,409), rotating hinge (105) are leaned on leg pipe (106), cross pipe (108), are intersected Pipe articulation piece (107), sliding sleeve (103) or sliding runner assembly (701,702,704,705) further include that extensible tube leans on foot device, It is characterized in that being equipped with telescopic supporter, sliding sleeve or cunning between the preceding seat pipe (1.1) and front leg tube (1.2) of folding seat Runner assembly is slided or is slided along telescopic supporter and rotates, hinged via rotating hinge and preceding seat pipe by leg pipe, leans on leg Pipe and sliding sleeve are connected as one between leg pipe and sliding runner assembly by cross pipe and cross pipe articulation piece, change sliding sleeve or Position of the sliding runner assembly on telescopic supporter, i.e., the changeable raising height by leg pipe can be with by the front end of leg pipe Extensible tube is installed and leans on foot device.
2. Leg device is leaned on 2. folding seat according to claim 1 is adjustable, it is characterised in that telescopic supporter is divided into housing Manage (101,201,301,401) and interior pumpings and manage (109,209,309,409), outer tube with front leg tube (1.2) hingedly, or with it is preceding Seat pipe (1.1) hingedly, interior pumping pipe via upper hinge part (102,202,302,402) and preceding seat pipe (1.1) hingedly, or and front leg tube (1.2) hingedly, outer tube and interior pumping pipe can be made to twitch relatively, and locating part (104) are housed on outer tube.
3. Leg device is leaned on 3. folding seat according to claim 1 is adjustable, it is characterised in that sliding sleeve (103) is sleeved on scalable branch It on the outer tube (101,201,301,401) of support arrangement, and can be slided along outer tube, sliding sleeve is equipped with curved handle (103.1,315,508) and elastic right angle pawl card (314) or flexible arc turn card (509)；It is cut with scissors on the inside of sliding sleeve equipped with cross pipe Fitting (107), hingedly via the cross pipe articulation piece of cross pipe (108) and the other end and by leg pipe (106) rigidity.
4. Leg device is leaned on 4. folding seat according to claim 1 is adjustable, it is characterised in that sliding runner assembly is by sliding part (701), rotating bar (702), locating part (104) rub paste block (704), and supporting member (705) composition, sliding part (701) is sleeved on On the outer tube (101,201,301,401) of telescopic supporter, rotating bar (702) one end and sliding part (701) hingedly, separately One end hinged support part (705), centre is equipped with friction paste block (704), and locating part (104) device is in telescopic supporter Between position, on the one hand sliding runner assembly can be rotated around the hinge joint of sliding part (701) in a certain range, another Aspect can also be slided along telescopic supporter, and the inside of sliding runner assembly is equipped with cross pipe articulation piece (107), via cross pipe (108) and the cross pipe articulation piece of the other end with it is hinged by leg pipe (106) rigidity.
5. Leg device is leaned on 5. folding seat according to claim 1 is adjustable, it is characterised in that extensible tube includes prolonging by foot device Stretch pipe (113), clamping piece (112,312), extend rotating hinge (111,311), extension (113) by extend rotating hinge (111, 311) and clamping piece (112,312) are hingedly mounted on the front end by leg pipe (106), extension (113) through clamping piece (112) with lean on Leg pipe (106) is extended common hinge joint (111.1) the hinged rotation in the same plane of rotating hinge (111)；Extension (113) Clamped part is hingedly rotated in Different Plane with the common hinge joint (311.1) for being extended rotating hinge (311) by leg pipe (106) (312) it limits, when expansion be may extend away by foot device, can be connected in rigid limit by leg pipe with extension.
6. Leg device is leaned on 6. a kind of folding seat is adjustable, comprising: folding seat (1), Slidable support device (501,502), rotating hinge (105), leg pipe (106) are leaned on, cross pipe (108), cross pipe articulation piece (107), sliding sleeve (103) or sliding runner assembly (701, It 702,704,705) further include, extensible tube by foot device, it is characterised in that in the preceding seat pipe (1.1) and front leg tube of folding seat (1.2) be equipped between Slidable support device (501,502), sliding sleeve or sliding runner assembly along Slidable support device (501, 502) slide or slide and rotate, it is hinged via rotating hinge and preceding seat pipe by leg pipe, by leg pipe and sliding sleeve or lean on leg pipe and It is connected as one between sliding runner assembly by cross pipe and cross pipe articulation piece, changes sliding sleeve or sliding runner assembly is slidably propping up Position on support arrangement, i.e., the changeable raising height by leg pipe can install extensible tube by foot device by the front end of leg pipe.
7. Leg device is leaned on 7. folding seat according to claim 6 is adjustable, it is characterised in that Slidable support device is divided into support (501) and support sliding sleeve (502) are managed, one end and front foot pipe (1.2) of support tube (501) or preceding seat pipe (1.1) are hingedly, another Hingedly with support sliding sleeve (502), support sliding sleeve (502), can be opposite on preceding seat pipe (1.1) or front foot pipe (1.2) at end Sliding；Locating part (104) are housed on support tube.
8. Leg device is leaned on 8. folding seat according to claim 6 is adjustable, it is characterised in that sliding sleeve (103), which is sleeved on, slidably to be propped up On the support tube (501) of support arrangement, and can be slided along support tube (501), sliding sleeve be equipped with curved handle (103.1,315, 508) turn card (509) with elastic right angle pawl card (314) or flexible arc；Cross pipe articulation piece (107) are housed on the inside of sliding sleeve, warp Hingedly by the cross pipe articulation piece of cross pipe (108) and the other end and by leg pipe (106) rigidity.
9. Leg device is leaned on 9. folding seat according to claim 6 is adjustable, it is characterised in that sliding runner assembly is by sliding part (701), rotating bar (702), locating part (104) rub paste block (704), supporting member (705) composition, sliding part (701) suit On the support tube (501) of Slidable support device, hingedly, the other end is hingedly propped up for rotating bar (702) one end and sliding part (701) Bearing member (705), centre are slided equipped with friction paste block (704), locating part (104) device in the middle position of Slidable support device On the one hand runner assembly can be rotated around the hinge joint of sliding part (701) in a certain range, on the other hand also can edge The inside of the sliding of Slidable support device, sliding runner assembly is equipped with cross pipe articulation piece (107), via cross pipe (108) and separately The cross pipe articulation piece of one end with it is hinged by leg pipe (106) rigidity.
10. Leg device is leaned on 10. folding seat according to claim 6 is adjustable, it is characterised in that extensible tube includes prolonging by foot device Stretch pipe (113), clamping piece (112,312), extend rotating hinge (111,311), extension (113) by extend rotating hinge (111, 311) and clamping piece (112,312) are hingedly mounted on the front end by leg pipe (106), extension (113) through clamping piece (112) with lean on Leg pipe (106) is extended common hinge joint (111.1) the hinged rotation in the same plane of rotating hinge (111)；Extension (113) Clamped part is hingedly rotated in Different Plane with the common hinge joint (311.1) for being extended rotating hinge (311) by leg pipe (106) (312) it limits, when expansion be may extend away by foot device, can be connected in rigid limit by leg pipe with extension.
11. Leg device is leaned on 11. a kind of folding seat is adjustable, comprising: folding seat (1) can be rotated support device (601,602,604), rotation It cuts with scissors (105), leans on leg pipe (106), cross pipe (108), cross pipe articulation piece (107), sliding sleeve (103) or sliding runner assembly (701, It 702,704,705) further include, extensible tube by foot device, it is characterised in that in the preceding seat pipe (1.1) and front leg tube of folding seat (1.2) it is equipped between rotatable support device (601,602,604), sliding sleeve or sliding runner assembly are along rotatably support device (601,602,604) slide or slide and rotate, it is hinged via rotating hinge and preceding seat pipe by leg pipe, lean on leg pipe and sliding sleeve or It is connected as one between leg pipe and sliding runner assembly by cross pipe and cross pipe articulation piece, changes sliding sleeve or sliding runner assembly exists It can be rotated the position in support device, i.e., the changeable raising height by leg pipe can install extensible tube by the front end of leg pipe By foot device.
12. Leg device is leaned on 12. folding seat according to claim 11 is adjustable, it is characterised in that be can be rotated support device and is divided into branch It supports rotation pipe (601), rotation pipe (602), support hinge part (604), support rotating pipe (601) one end and front leg tube (1.2) are cut with scissors It connecing, the other end is equipped with support hinge part (604), hingedly with rotation pipe (602), the other end of rotation pipe (602) and preceding seat pipe (1.1) hinged；Locating part (104) are housed on support rotating pipe.
13. Leg device is leaned on 13. folding seat according to claim 11 is adjustable, it is characterised in that sliding sleeve (103), which is sleeved on, can be rotated On the support rotating pipe (601) of support device, and can be slided along support rotating pipe, sliding sleeve be equipped with curved handle (103.1, 315,508) and elastic right angle pawl card (314) or flexible arc turn card (509)；Cross pipe articulation piece is housed on the inside of sliding sleeve (107), hinged via the cross pipe articulation piece of cross pipe (108) and the other end and by leg pipe (106) rigidity.
14. Leg device is leaned on 14. folding seat according to claim 11 is adjustable, it is characterised in that sliding runner assembly is by sliding part (701), rotating bar (702), locating part (104) rub paste block (704), and supporting member (705) composition, sliding part (701) is sleeved on It can be rotated on the support rotating pipe (601) of support device, hingedly, the other end is hinged for rotating bar (702) one end and sliding part (701) Supporting member (705), centre equipped with friction paste block (704), locating part (104) device in the middle position of rotatable support device, On the one hand sliding runner assembly can be rotated around the hinge joint of sliding part (701) in a certain range, on the other hand also can Along can be rotated support device sliding, the inside of sliding runner assembly is equipped with cross pipe articulation piece (107), via cross pipe (108) and The cross pipe articulation piece of the other end with it is hinged by leg pipe (106) rigidity.
15. Leg device is leaned on 15. folding seat according to claim 11 is adjustable, it is characterised in that extensible tube includes by foot device Extension (113), clamping piece (112,312) extend rotating hinge (111,311), and extension (113) is by extending rotating hinge (111,311) and clamping piece (112,312) are hingedly mounted on the front end by leg pipe (106), and extension (113) is through clamping piece (112) it is hingedly rotated in the same plane with the common hinge joint (111.1) for being extended rotating hinge (111) by leg pipe (106)；Prolong Pipe (113) is stretched hingedly to turn in Different Plane with by leg pipe (106) through extending the common hinge joint (311.1) of rotating hinge (311) Dynamic clamped part (312) limit when expansion be may extend away by foot device, can be connected by leg pipe with extension in rigid limit.