CN114537571A - Backrest and armrest linkage folding seat and scooter - Google Patents

Abstract

The invention relates to the technical field of folding seats and scooter equipment, in particular to a backrest and armrest linkage folding seat and a scooter, wherein the folding seat comprises a seat, a backrest, armrests and a first linkage mechanism, the first linkage mechanism comprises a linkage sleeve and a limiting pin arranged on the armrests, the backrest is in transmission connection with the linkage sleeve, the linkage sleeve is provided with a limiting groove, the limiting pin is positioned in the limiting groove and can move back and forth within the length range of the limiting groove, the backrest can rotate to drive the linkage sleeve to rotate, the limiting pin is pushed by the side walls of the limiting groove to drive the armrests to rotate, the linkage of the backrest and the armrests is realized, and the armrests can also rotate independently after rotating to an expansion position along with the backrest to avoid a side channel so as to facilitate getting on and off; the scooter adopts the backrest and the armrest linkage folding seat, and simultaneously, the seat and the backrest also adopt a linkage design, thereby realizing the common linkage of seat lifting, backrest unfolding and folding and armrest unfolding and folding.

Description

A backrest armrest linkage folding seat and scooter

technical field

The invention relates to the technical field of folding seats and scooter equipment, in particular to a folding seat and a scooter linked with a backrest and armrests.

Background technique

The backrest and armrest of the folding seat can be folded when not in use, which reduces the volume, facilitates storage and transportation, and is easy to use, so it is widely used, such as in scooters that meet the needs of the elderly and the physically challenged. However, for most of the folding seats of the scooter on the market, the unfolding and folding of the backrest and the unfolding and folding of the armrest cannot be linked, and they need to be rotated, unfolded and folded separately, which is inconvenient to use; some folding seats can realize the linked unfolding of the backrest and the armrest. Folding, but usually adopts the pull-wire linkage. This kind of pull-wire linkage mechanism is not rigid support, so the bearing capacity is relatively poor, and the current backrest and armrest linkage mechanism, when the armrest is rotated with the backrest linkage to the unfolded position, The armrest can no longer be rotated separately, so that the armrest will block the passage on the side of the seat, making it inconvenient for users with limited mobility to get on and off the vehicle from the side.

SUMMARY OF THE INVENTION

In order to overcome the defects in the prior art, one of the tasks of the present invention is to provide a backrest-armrest linkage folding seat, which can realize the linkage unfolding and folding of the backrest and the armrest, and the armrest is supported by a rigid structure, with strong bearing capacity, and the armrest When the backrest is rotated to the unfolded position, the armrest can also be rotated backward independently so that it will not block the passage on the side of the seat, so that the user can get on and off the vehicle easily. The seat is folded, and the seat and backrest are also designed in linkage, so that the joint linkage of seat lifting, backrest unfolding and folding, and armrest unfolding and folding can be realized.

One of the tasks of the present invention is achieved through the following technical solutions:

A backrest armrest linkage folding seat, comprising: a seat on which fixed shafts protruding to both sides are fixed; a backrest hinged on the seat; and two armrests, which are respectively located on two sides of the seat. The first linkage mechanism includes a linkage sleeve and a limit pin fixed on the corresponding armrest, and the linkage sleeve is connected to both sides of the backrest through a first linkage mechanism. The movable sleeve is on the fixed shaft and is rotatably connected with it. The linkage sleeve and the backrest are connected by transmission through a transmission mechanism, so that the backrest can drive the linkage sleeve to rotate. The peripheral direction of the linkage sleeve is also provided with a long arc limit groove. The limit pin is located in the limit slot and can move back and forth within its length. When the backrest is rotated and unfolded relative to the seat, it can drive the linkage sleeve to rotate, so that the limit pin can be pushed through the side wall of one end of the limit slot, thereby driving the armrest. Rotate to expand.

The technical solution provides a backrest armrest linkage folding seat. During use, when the backrest is rotated from the folded position to the unfolded position, the linkage sleeve can be driven to rotate, thereby pushing the limit pin through the side wall of one end of the limit groove. Drive the armrest to rotate to the unfolded position at the same time. At this time, the armrest can be manually rotated backward until the limit pin touches the other end of the limit groove. At this time, the armrest is in the avoidance position, leaving the passage on the side of the seat, which is convenient for users to get up and down. After the user gets on and off the car, put down the armrest freely to the unfolded position. When the backrest is rotated downward from the unfolded position to the folded position, the limit pin loses the pushing effect of the limit groove, and the armrest will automatically rotate to the folded position at the same time under the action of its own weight. In the unfolded position, the armrest is rigidly supported by the abutment of the limit groove and the limit pin, and the bearing capacity is strong, safe and reliable and not easy to be damaged.

The technical solution is further described below:

In some embodiments, the transmission mechanism includes a first linkage member and a second linkage member, one end of the first linkage member is fixedly connected to the side wall of the linkage sleeve, and the other end protrudes outward and is linked with the second linkage member One end of the second linkage member is hinged, and the other end of the second linkage member is hinged to the backrest, so as to realize the transmission between the backrest and the linkage sleeve.

In some embodiments, the transmission mechanism further includes a third linkage member, one end of the third linkage member is fixedly connected to the backrest, and the other end protrudes forward or backward and is connected with the other end of the second linkage member hinged, so as to realize the hinged connection between the second linkage and the backrest.

In some embodiments, the rear end of the seat is fixedly provided with a first support frame that protrudes upward, and the lower end of the backrest is fixedly provided with a second support frame that protrudes forward or backward. The ends of the frame and the second support frame are hinged to realize the hinge of the backrest and the seat, and the hinge axis at the hinge point is parallel to the hinge at the hinge point between the second link and the third link. axis.

In some embodiments, a sleeve joint is fixedly connected to the side of the root of the handrail, the sleeve joint is movably sleeved outside the fixed shaft to realize rotational connection, the limit pin is fixedly arranged on the sleeve joint, and the The linkage sleeve is a stepped sleeve structure, the large diameter end of the linkage sleeve is movably sleeved on the outside of the sleeve joint, and the small diameter end is movably sleeved on the outside of the fixed shaft.

In some embodiments, the armrest includes a mutually bent support section and a connecting section, the armrest is rotatably connected to the fixed shaft through the root of the connecting section, the transmission mechanism is a deceleration transmission mechanism, and the backrest drives the armrest When rotating, the rotating angular velocity of the backrest is greater than the rotating angular velocity of the armrest; when the armrest is in the folded position, the connecting section is flush with the seat; when the armrest is rotated to the unfolding position, the connecting section is located at the included angle between the seat and the backrest In between, the support section is parallel to the seat; when the armrest is rotated to the avoidance position, the connecting section is flush with the backrest.

The second task of the present invention is achieved through the following technical solutions:

A scooter, comprising the backrest armrest linkage folding seat provided in one of the tasks of the present invention, and a chassis assembly, a folding bracket, a second linkage mechanism and a driving mechanism, the chassis assembly includes a chassis and wheels mounted on the chassis, the seat The chair and the chassis are connected by a folding bracket, the backrest and the folding bracket are linked and connected by a second linkage mechanism, and the driving mechanism is used to drive the folding bracket to unfold or fold, and then drive the seat to move up and down through the folding bracket, and at the same time, through the first linkage mechanism. The second linkage mechanism drives the backrest to rotate, unfold or fold, and at the same time, the first linkage mechanism drives the armrest to rotate, unfold or fold.

In the scooter provided by the present invention, during use, the folding bracket is driven to unfold or fold by the driving mechanism, and then the seat is moved up and down by the folding bracket, and the backrest is driven to rotate, unfold or fold by the second linkage mechanism, and The first linkage mechanism drives the armrest to rotate, unfold or fold, and the seat is raised to a suitable height. When the backrest and the armrest are both rotated to the unfolded position, the armrest can also be manually rotated upwards to make the armrest rotate to an avoidance position and move the seat away. The get-and-get-on channel on the side of the chair is convenient for users to get on and off, and does not affect the linkage of the backrest and armrests.

The concept, specific structure and effects of the present invention will be further described below with reference to the accompanying drawings, so as to fully understand the purpose, features and effects of the present invention.

Description of drawings

1 is a schematic structural diagram of the backrest armrest linkage folding seat from a rear perspective in Embodiment 1;

Fig. 2 is the partial enlarged schematic diagram of A part in Fig. 1;

3 is a schematic structural diagram of the backrest armrest linkage folding seat from a front side perspective in Embodiment 1;

FIG. 4 is a schematic structural diagram of a scooter in Embodiment 2. FIG.

Among them, seat 1, fixed shaft 11, first support frame 12, backrest 2, second support frame 21, armrest 3, support section 31, connecting section 32, sleeve joint 33, first linkage mechanism 4, linkage sleeve 41, limit slot 411, limit pin 42, first linkage 43, second linkage 44, third linkage 45, backrest armrest linkage folding seat 10, chassis assembly 20, chassis 201, wheels 202, folding bracket 30 , the second linkage mechanism 40 , the driving mechanism 50 .

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection. ground connection; can be directly connected or indirectly connected through intermediate elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood in specific situations.

Example 1:

As shown in Figures 1-3, a backrest armrest linkage folding seat 10 includes:

The seat 1, the rear end of which is fixedly provided with a fixed shaft 11 protruding to both sides;

the backrest 2, which is hinged to the seat 1;

The armrests 3 are two in number, respectively located on both sides of the seat 1 and are connected vertically and rotatably with the fixed shaft 11 on the corresponding side, and are respectively connected on both sides of the backrest 2 through the first linkage mechanism;

The first linkage mechanism 4 includes a linkage sleeve 41 and a limit pin 42 fixed on the corresponding armrest 3 . The linkage sleeve 41 is movably sleeved on the fixed shaft 11 and is rotatably connected to it. The linkage sleeve 41 is connected to the backrest 2 . The transmission connection is carried out through the transmission mechanism, so that the backrest 2 can drive the linkage sleeve 41 to rotate, and the linkage sleeve 41 is further provided with a long arc limit groove 411 in the circumferential direction. The limit pin 42 is located in the limit slot 411 and can reciprocate within its length. When the backrest 2 is rotated and unfolded relative to the seat 1, it can drive the linkage sleeve 41 to rotate, so that it can pass through the side wall of one end of the limit slot 411. Push the limit pin 42 to drive the armrest 3 to rotate and unfold.

The present embodiment provides a backrest-armrest linkage folding seat 10. During use, when the backrest 2 is rotated from the folded position to the unfolded position, the linkage sleeve 41 can be driven to rotate, so as to pass the one end side wall of the limiting groove 411. Push the limit pin 42 to drive the handrail 3 to rotate to the unfolded position at the same time. Since the length of the limit groove 11 is greater than the outer diameter of the limit pin 42, the handrail 3 can be manually rotated backward until the limit pin 42 reaches the limit. At the other end of the slot 411, the armrest 3 is in the avoidance position at this time, and the armrest 3 leaves the passage on the side of the seat 1, which is convenient for the user to get on and off the car. When rotated down to the folded position, the limit pin 42 loses the pushing action of the limit groove 411, and the armrest 3 will automatically rotate to the folded position at the same time under the action of its own weight, thereby realizing the linkage unfolding and folding of the backrest 2 and the armrest 3; Moreover, the armrest 3 is rigidly supported by the abutment of the limit groove 411 and the limit pin 42 when the armrest 3 is in the unfolded position, and has strong bearing capacity, strong bearing capacity, safety and reliability, and is not easily damaged. It should be noted that the surfaces of the seat 1 , the backrest 2 , and the armrest 3 may all be provided with soft pads, and the soft pads may be soft pads made of materials such as sponge and rubber, or other materials.

In some embodiments, the transmission mechanism includes a first linkage 43 , a second linkage 44 and a third linkage 45 . One end of the first linkage 43 is fixedly connected to the side wall of the linkage sleeve 41 , and the other is connected to the side wall of the linkage sleeve 41 . One end protrudes outward and is hinged with one end of the second linkage 44 , one end of the third linkage 45 is fixedly connected to the backrest 2 , and the other end protrudes forward or backward and is connected with the other end of the second linkage 44 . One end is hinged to realize the transmission between the backrest 2 and the linkage sleeve 41 . It should be noted that the first linkage member 43 , the second linkage member 44 , and the third linkage member 45 are all rigid objects with a supporting function, and their shapes are not limited.

In some embodiments, the rear end of the seat 1 is fixedly provided with a first support frame 12 protruding upward, and the lower end of the backrest 2 is fixedly provided with a second support frame 21 protruding forward or backward , the ends of the first support frame 12 and the second support frame 21 are hinged to realize the hinged connection between the backrest 2 and the seat 1, and the hinge axis at the hinge point is parallel to the second linkage 44, the third The hinge axis at the hinge point between the linkages 45 . This design enables the rotation of the backrest 2 to drive the second linkage 44 to deflect, and enables the backrest 2 to be overhead hinged above the seat 1, and the folded position of the backrest 2 lies flat on the seat 1, occupying less space.

In some of the embodiments, a sleeve joint 33 is fixedly connected to the side of the root of the handrail 3 , and the sleeve joint 33 is movably sleeved on the outside of the fixed shaft 11 to realize a rotatable connection, and the limit pin 42 is fixedly arranged on the sleeve. On the barrel joint 33 , the linkage sleeve 41 is a stepped sleeve structure, the large diameter end of the linkage sleeve 41 is movably sleeved outside the sleeve joint 33 , and the small diameter end is movably sleeved outside the fixed shaft 11 . The design has a simple structure, and is convenient to realize the coaxial and rotatable connection of the sleeve joint 33 , the linkage sleeve 41 and the fixed shaft 11 .

In some of the embodiments, the handrail 3 includes a mutually bent support section 31 and a connecting section 32, the handrail 3 is rotatably connected to the fixed shaft 11 through the root of the connecting section 32, and the transmission mechanism is a deceleration mechanism. Transmission mechanism, when the backrest 2 drives the armrest 3 to rotate, the rotational angular velocity of the backrest 2 is greater than the rotational angular velocity of the armrest 3; when the armrest 3 is in the folded position, the connecting section 32 is flush with the seat 1; when the armrest 3 is rotated to the unfolded position , wherein the connecting section 32 is located between the angle between the seat 1 and the backrest 2 , and the supporting section 31 is parallel to the seat 1 ; Taking the transmission mechanism in the above embodiment as an example, the lengths of the first linkage member 43 , the second linkage member 44 , and the third linkage member 45 are designed through mathematical calculation, so that the rigid deceleration transmission between the backrest 2 and the armrest 3 can be realized. . The designed armrest is easy to use. When the armrest is in the avoidance position, it will not affect the space behind the backrest, and the rigid linkage between the backrest and the armrest can still be achieved by using the transmission mechanism in the above embodiment.

Example 2:

As shown in FIG. 4 , a scooter includes the backrest-armrest linkage folding seat 10 in Embodiment 1, a chassis assembly 20 , a folding bracket 30 , a second linkage mechanism 40 and a driving mechanism 50 , and the chassis assembly 20 includes a chassis 201 and the wheels 202 mounted on the chassis 201, the seat 1 and the chassis 201 are connected by a folding bracket 30, the backrest 2 and the folding bracket 30 are linked by a second linkage mechanism 40, and the driving mechanism 50 is used for driving The folding bracket 30 is unfolded or folded, and then the seat 1 is moved up and down through the folding bracket 30 , and the backrest 2 is driven to rotate, unfold or fold through the second linkage mechanism 40 , and the armrest 3 is driven to rotate through the first linkage mechanism 4 . Expand or collapse.

In the scooter provided by the present invention, during use, the folding bracket 30 is driven by the driving mechanism 50 to unfold or fold, and then the seat 1 is moved up and down by the folding bracket 30, and the backrest 2 is driven to rotate by the second linkage mechanism 40 at the same time. unfold or fold, and at the same time drive the armrest 3 to rotate, unfold or fold through the first linkage mechanism 4, and the seat 1 is raised to a suitable height, when the backrest 2 and the armrest 3 are both rotated to the unfolded position, the armrest can also be manually rotated upward. 3. Rotate the armrest 3 to the avoidance position, and open the aisle for getting on and off the side of the seat 1, so as to facilitate the user to get on and off the car, and does not affect the linkage of the armrest 3 of the backrest 2.

The above description is only a preferred embodiment of the present application and an illustration of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to the technical solution formed by the specific combination of the above-mentioned technical features, and should also cover, without departing from the inventive concept, the above-mentioned technical features or their Other technical solutions formed by any combination of equivalent features. For example, a technical solution is formed by replacing the above-mentioned features with the technical features disclosed in this application (but not limited to) with similar functions.

Claims (7)

1. A backrest armrest linkage folding seat is characterized by comprising:

a seat, on which a fixing shaft protruding to both sides is fixed;

a backrest hinged to the seat;

the two armrests are respectively positioned on two sides of the seat, are rotatably connected with the fixed shaft on the corresponding side, and are respectively connected to two sides of the backrest through first linkage mechanisms;

the first linkage mechanism comprises a linkage sleeve and a limiting pin fixed on the corresponding armrest, the linkage sleeve is movably sleeved on the fixed shaft and is rotatably connected with the fixed shaft, the linkage sleeve is in transmission connection with the backrest through a transmission mechanism so that the backrest can drive the linkage sleeve to rotate, a long arc-shaped limiting groove is further formed in the circumferential direction of the linkage sleeve, the limiting pin is located in the limiting groove and can move in a reciprocating mode within the length range of the limiting pin, the linkage sleeve can be driven to rotate when the backrest rotates and unfolds relative to the seat, and therefore the limiting pin can be pushed through one end side wall of the limiting groove and further drives the armrest to rotate and unfold.

2. The back-rest armrest linkage folding seat as claimed in claim 1, wherein the transmission mechanism comprises a first linkage member and a second linkage member, one end of the first linkage member is fixedly connected with the side wall of the linkage sleeve, the other end of the first linkage member protrudes outwards and is hinged with one end of the second linkage member, and the other end of the second linkage member is hinged with the back rest, so that the transmission between the back rest and the linkage sleeve is realized.

3. The back-rest armrest linkage folding seat as claimed in claim 2, wherein the transmission mechanism further comprises a third linkage member, one end of the third linkage member is fixedly connected with the back rest, and the other end of the third linkage member protrudes forwards or backwards and is hinged with the other end of the second linkage member, so that the second linkage member is hinged with the back rest.

4. The back-rest armrest linkage folding seat as claimed in claim 3, wherein the rear end of the seat is fixedly provided with a first support frame protruding upwards, the lower end of the back rest is fixedly provided with a second support frame protruding forwards or backwards, the ends of the first support frame and the second support frame are hinged, so that the back rest and the seat are hinged, and the hinge shaft at the hinge point is parallel to the hinge shaft at the hinge point between the second linkage member and the third linkage member.

5. The backrest armrest linkage folding seat as claimed in claim 1, wherein a sleeve joint is fixedly connected to the lateral surface of the root of the armrest, the sleeve joint is movably sleeved outside the fixed shaft for rotatable connection, the limit pin is fixedly arranged on the sleeve joint, the linkage sleeve is of a stepped sleeve structure, one end of the linkage sleeve with a large diameter is movably sleeved outside the sleeve joint, and one end of the linkage sleeve with a small diameter is movably sleeved outside the fixed shaft.

6. The backrest armrest linkage folding seat as claimed in claim 1, wherein the armrest comprises a support section and a connecting section which are bent with each other, the armrest is rotatably connected with the fixed shaft through the root of the connecting section, the transmission mechanism is a speed reduction transmission mechanism, and when the backrest drives the armrest to rotate, the rotation angular speed of the backrest is greater than that of the armrest; when the armrests are positioned at the folding positions, the connecting sections are flush with the seat; when the armrests rotate to the unfolding position, the connecting sections are located between the seat and the backrest, and the supporting sections are parallel to the seat; when the handrail rotates to the avoiding position, the connecting section is flush with the backrest.

7. A scooter, characterized in that, comprises the backrest handrail linkage folding seat as claimed in any one of claims 1 to 7, and a chassis component, a folding bracket, a second linkage mechanism and a driving mechanism, wherein the chassis component comprises a chassis and wheels mounted on the chassis, the seat is connected with the chassis through the folding bracket, the backrest is connected with the folding bracket through the second linkage mechanism in a linkage manner, the driving mechanism is used for driving the folding bracket to unfold or fold, then the folding bracket drives the seat to ascend and descend, meanwhile, the second linkage mechanism drives the backrest to rotate and unfold or fold, and meanwhile, the first linkage mechanism drives the handrail to rotate and unfold or fold.

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