CN114906259A - A seat cushion height adjustment structure - Google Patents

Abstract

The invention provides a seat cushion height adjustment structure, which includes a frame body, a first adjustment assembly, a seat cushion frame and a second adjustment assembly. The first adjustment assembly is arranged on the frame body, and the first adjustment assembly is provided with a plurality of first positioning holes. The seat cushion frame can be connected with any one of the first positioning holes, and the seat cushion frame has a horizontal bearing surface. The length of the second adjustment assembly is adjustable, the second adjustment assembly is hinged with the seat cushion frame and the frame body respectively, and the hinged position of the second adjustment assembly and the frame body is located below the seat cushion frame. The seat cushion height adjustment structure is designed to limit the seat cushion frame by designing the first adjustment component and the second adjustment component, which improves the limiting effect of the seat cushion frame, and can effectively avoid excessive force or sudden The impact force changes the height position of the seat cushion frame, the overall structure is simple and stable, and the adjustment is convenient.

Description

A seat cushion height adjustment structure

technical field

The invention relates to the technical field of electric two-wheeled vehicles, in particular to a seat cushion height adjustment structure.

Background technique

With the continuous improvement of the economic level, the styles of strollers emerge in an endless stream. The stroller can increase the coordination development of children's mind and limbs, thereby bringing certain benefits to children's intellectual and physical development.

The height adjustment structure of the seat cushion of the existing children's vehicle generally adjusts the height of the seat cushion by adjusting the length of the telescopic rod, and then locking the telescopic rod by means of a hoop. However, since there is no limit point for the hoop, when the occupant is heavy, if the telescopic rod is locked by the hoop, the telescopic rod cannot be properly limited, and the telescopic rod is easy to loosen, so that when the force is excessive The height of the seat cushion will change when it is subjected to a large or sudden impact force, and there is a certain safety hazard.

SUMMARY OF THE INVENTION

In view of the defects in the prior art, the purpose of the present invention is to provide a seat cushion height adjustment structure, so as to improve the limiting effect of the seat cushion frame and avoid the height of the seat cushion frame due to excessive force or sudden impact force. The location changes.

In order to achieve the above object, the present invention provides a seat cushion height adjustment structure, comprising a frame body; a first adjustment assembly disposed on the frame body, and a plurality of first positioning elements are disposed on the first adjustment assembly a seat cushion frame, which can be connected to any one of the first positioning holes, the seat cushion frame has a horizontal bearing surface; and a second adjustment assembly, the length of which is adjustable, the second adjustment assembly is respectively The seat cushion frame and the frame body are hinged, and the hinged position of the second adjusting assembly and the frame body is located below the seat cushion frame.

Preferably, the first adjustment assembly includes a positioning plate and a first locking unit, the positioning plate is disposed on the frame body, and one end of the positioning plate away from the head tube of the frame body is inclined downward, A plurality of the first positioning holes are arranged at intervals along the inclination direction of the inclined plane of the positioning plate; one end of the seat cushion frame close to the positioning plate is provided with a positioning column, and the positioning column is inserted into the first positioning hole Matching; the first locking unit is used for locking the positioning column in the first positioning hole.

Preferably, the first locking unit includes a mounting plate and a first locking bolt; two sides of the mounting plate are respectively bent to form bending parts, and the bending parts are connected when the positioning plate faces away from the On one side of the seat cushion frame, the mounting plate has a strip hole extending in a direction parallel to the inclined surface of the positioning plate; the first locking bolt can pass through the strip hole, The end surface of the positioning column is provided with a first screw hole which is threadedly matched with the first locking bolt.

Preferably, the second adjustment assembly includes a first support tube, a second support tube, an adjustment tube and the second locking unit; the first support tube is hinged on the frame body, the second The support tube is arranged on the first support tube, one end of the adjustment tube is hinged with the seat cushion frame, and the adjustment tube is telescopically matched with the second support tube; the second locking unit is used for locking The adjustment tube is locked on the second support tube.

Preferably, the second support tube penetrates through a plurality of groups of second positioning holes, the plurality of groups of the second positioning holes are arranged at intervals along the axial direction of the second support tube, and the adjustment tube is sleeved on the first support tube. Inside the two support tubes, the adjusting tube is provided with a mounting hole; the second locking unit includes a first bushing, a second bushing and a second locking bolt, the first bushing and the second bushing They are respectively arranged on both sides of the second support tube. Both the first bushing and the second bushing can be inserted into the second positioning holes on the corresponding side. a through hole for the second locking bolt to pass through, the second bushing is provided with a second screw hole threaded with the second locking bolt, and the second locking bolt can pass through the Mounting holes.

Preferably, a first concave portion is provided on the end face of the first bushing facing the adjusting tube, and the first concave portion is matched with the outer wall of the adjusting tube; the second bushing faces the adjusting tube The end face of the tube is provided with a second concave portion, and the second concave portion is matched with the outer wall of the regulating tube.

Preferably, the seat cushion frame is provided with a bracket in a "U"-shaped structure, the opening of the bracket is downward, and one end of the adjustment tube is provided with a third support tube, and the third support tube is rotatably arranged at the inside the bracket.

Beneficial effects of the present invention:

The invention discloses a seat cushion height adjustment structure. The first adjustment component and the second adjustment component are designed to be respectively connected with the seat cushion frame. When the height of the seat cushion frame needs to be adjusted, the seat cushion frame and the One of the first positioning holes is connected, and then the length of the second adjustment component is adjusted adaptively, so that the horizontal height position of the supporting surface of the seat cushion frame can be adjusted, and the supporting surface of the seat cushion frame can also be adjusted. The surface remains in the water state at all times.

The seat cushion height adjustment structure is designed to limit the seat cushion frame respectively by designing the first adjustment component and the second adjustment component, which improves the limiting effect of the seat cushion frame, and can effectively avoid excessive force or sudden The impact force changes the height position of the seat cushion frame, the overall structure is simple and stable, and the adjustment is convenient.

Description of drawings

In order to illustrate the specific embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that are required to be used in the description of the specific embodiments or the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. In the drawings, each element or section is not necessarily drawn to actual scale.

1 is a schematic structural diagram of a seat cushion height adjustment structure according to an embodiment of the present invention;

Fig. 2 is the structural representation of positioning plate;

Fig. 3 is the partial enlarged view of A place in Fig. 2;

Fig. 4 is the structural representation of the mounting plate;

Fig. 5 is a partial enlarged view at B in Fig. 4;

6 is a schematic structural diagram of a seat cushion frame;

7 is an exploded view of the second adjustment assembly;

8 is a schematic structural diagram of a second locking unit;

FIG. 9 is a schematic diagram of the height position of the seat cushion frame in the middle position.

Reference number:

10-frame body;

20-first adjustment assembly, 21-positioning plate, 211-first positioning hole, 22-installation plate, 221-bending part, 222-strip hole, 23-first locking bolt;

30-seat cushion frame, 31-bearing surface, 32-positioning column, 321-first screw hole, 33-support;

40-Second adjustment assembly, 41-First support pipe, 42-Second support pipe, 421-Second positioning hole, 43-Adjust pipe, 431-Installation hole, 44-First bushing, 441-Through hole, 442 - the first recess, 45 - the second bushing, 451 - the second screw hole, 46 - the second locking bolt, 47 - the third support tube.

Detailed ways

Embodiments of the technical solutions of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only used to more clearly illustrate the technical solutions of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

It should be noted that, unless otherwise specified, the technical or scientific terms used in this application should have the usual meanings understood by those skilled in the art to which the present invention belongs.

In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " Rear, Left, Right, Vertical, Horizontal, Top, Bottom, Inner, Outer, Clockwise, Counterclockwise, Axial, The orientations or positional relationships indicated by "radial direction", "circumferential direction", etc. are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated devices or elements. It must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

In this application, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of the two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In this application, unless otherwise expressly stated and defined, a first feature "on" or "under" a second feature may be in direct contact with the first and second features, or the first and second features indirectly through an intermediary touch. Also, the first feature being "above", "over" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

As shown in FIGS. 1-9 , in an embodiment of the present invention, a seat cushion height adjustment structure is provided, including a frame body 10 , a first adjustment assembly 20 , a seat cushion frame 30 and a second adjustment assembly 40 .

The first adjustment assembly 20 is disposed on the frame body 10 , and a plurality of first positioning holes 211 are disposed on the first adjustment assembly 20 . The seat cushion frame 30 can be connected with any one of the first positioning holes 211 , and the seat cushion frame 30 has a horizontal supporting surface 31 . The length of the second adjusting assembly 40 is adjustable, the second adjusting assembly 40 is hinged with the seat cushion frame 30 and the frame body 10 respectively, and the hinged position of the second adjusting assembly 40 and the frame body 10 is located below the seat cushion frame 30 .

In the seat cushion height adjustment structure of this embodiment, the first adjustment assembly 20 and the second adjustment assembly 40 are designed to be connected to the seat cushion frame 30 respectively. When the height of the seat cushion frame 30 needs to be adjusted, the seat cushion frame is 30 is connected with one of the first positioning holes 211, and then the length of the second adjustment component 40 is adjusted adaptively, so that the horizontal height position of the bearing surface 31 of the seat cushion frame 30 can be adjusted, and also make The support surface 31 of the seat cushion frame 30 is always kept in a water surface state.

The seat cushion height adjustment structure is designed to limit the seat cushion frame 30 respectively by designing the first adjustment assembly 20 and the second adjustment assembly 40 , which improves the limiting effect of the seat cushion frame 30 and can effectively avoid excessive stress. Large or sudden impact force changes the height position of the seat cushion frame 30, the overall structure is simple and stable, and the adjustment is convenient.

In one embodiment, the first adjustment assembly 20 includes a positioning plate 21 and a first locking unit, the positioning plate 21 is disposed on the frame body 10, and one end of the positioning plate 21 away from the head tube of the frame body 10 is inclined downward, and more The first positioning holes 211 are arranged at intervals along the inclination direction of the inclined surface of the positioning plate 21 . One end of the seat cushion frame 30 close to the positioning plate 21 is provided with a positioning column 32 , and the positioning column 32 is inserted and matched with the first positioning hole 211 .

The first locking unit is used to lock the positioning post 32 in the first positioning hole 211. The first locking unit includes a mounting plate 22 and a first locking bolt 23. The bent portion 221 is connected to the side of the positioning plate 21 away from the seat cushion frame 30 . The first locking bolt 23 can pass through the strip hole 222 , and a first screw hole 321 threaded with the first locking bolt 23 is provided on the end surface of the positioning column 32 .

Specifically, the positioning plate 21 is designed with three first positioning holes 211. When the height of the seat cushion frame 30 needs to be adjusted, the first locking bolts 23 are unscrewed, and the positioning posts 32 on the seat cushion frame 30 are inserted into corresponding Then, use the first locking bolt 23 to pass through the strip hole 222 and cooperate with the first screw hole 321 of the positioning column 32, so that the positioning column 32 can be locked in the corresponding In the first positioning hole 211 , the adjustment of the connection position of the seat cushion frame 30 and the positioning plate 21 can be realized.

In one embodiment, the second adjustment assembly 40 includes a first support tube 41 , a second support tube 42 , an adjustment tube 43 and a second locking unit. The first support tube 41 is hinged on the frame body 10 , the second support tube 42 is arranged on the first support tube 41 , one end of the adjustment tube 43 is hinged with the seat cushion frame 30 , and the adjustment tube 43 telescopically cooperates with the second support tube 42 . The second support tube 42 penetrates through a plurality of groups of second positioning holes 421 , and the plurality of groups of second positioning holes 421 are arranged at intervals along the axial direction of the second support tube 42 . The adjustment tube 43 is sleeved in the second support tube 42 , and the adjustment tube 43 has a mounting hole 431 therethrough.

The second locking unit is used for locking the adjusting tube 43 on the second supporting tube 42. The second locking unit includes a first bushing 44, a second bushing 45 and a second locking bolt 46. The first bushing 44 and the second bushing 45 are respectively arranged on both sides of the second support tube 42, the first bushing 44 and the second bushing 45 can be inserted into the second positioning hole 421 on the corresponding side, and the first bushing 44 is provided There is a through hole 441 through which the second locking bolt 46 can pass through. The second bushing 45 is provided with a second screw hole 451 threaded with the second locking bolt 46, and the second locking bolt 46 can pass through the mounting hole. 431.

Specifically, three sets of second positioning holes 421 are designed on the second support tube 42. When adjusting the second adjustment assembly 40, the second locking bolt 46 is firstly unscrewed to make the first bushing 44 and the second bushing 45 respectively withdraw from the second positioning holes 421, then move the mounting holes 431 on the adjustment tube 43 to another set of second positioning holes 421, and align the mounting holes 431 with the second positioning holes 421, and then place the first bushing 44 and the second bushing 45 are respectively clamped into the corresponding second positioning holes 421. Finally, the second locking bolts 46 are used to pass through the through holes 441 and the mounting holes 431 in sequence, and are screwed into the second screw holes 451, namely Adjustment of the protruding length of the adjustment tube 43 can be achieved.

In one embodiment, the end surface of the first bushing 44 facing the adjustment tube 43 is provided with a first recessed portion 442 , and the first recessed portion 442 is matched with the outer wall of the adjustment tube 43 . The end surface of the second bushing 45 facing the adjustment tube 43 is provided with a second recessed portion, and the second recessed portion is matched with the outer wall of the adjustment tube 43 . The design of the first concave portion 442 and the second concave portion can increase the contact area between the first bushing 44 and the second bushing 45 and the adjusting tube 43 , thereby improving the firmness of the locking position.

In one embodiment, the seat cushion frame 30 is provided with a bracket 33 in a “U” shape, the opening of the bracket 33 is downward, and one end of the adjustment tube 43 is provided with a third support tube 47 , and the third support tube 47 is rotatably arranged at the inside the bracket 33 .

The specific working principle of the seat cushion height adjustment structure:

Referring to FIGS. 3 and 7 , the three first positioning holes 211 on the positioning plate 21 are sequentially denoted as the first positioning holes 211a, the first positioning holes 211b and the first positioning holes 211c from top to bottom along the slope of the positioning plate 21. The three groups of second positioning holes 421 on the second support tube 42 are sequentially denoted as second positioning holes 421 a , second positioning holes 421 b and second positioning holes 421 c along the direction away from the first support tube 41 .

The seat cushion frame 30 has three height positions, namely the highest position, the middle position and the lowest position.

When the seat cushion frame 30 needs to be adjusted to the highest position, firstly insert the positioning column 32 into the first positioning hole 211a, then properly rotate the positions of the first support tube 41 and the adjustment tube 43, and retract the adjustment tube 43 to the third position inside the two support tubes 42, and align the mounting holes 431 of the adjusting tubes 43 with the second mounting holes 431a. Then use the first locking bolt 23 to pass through the strip hole 222 and cooperate with the first screw hole 321 of the positioning column 32 to realize the locking of the positioning column 32. Then, the first bushing 44 and the second bushing are 45 respectively snap into the corresponding second positioning holes 421, and finally, use the second locking bolts 46 to pass through the through holes 441 and the mounting holes 431 in turn, and screw them into the second screw holes 451 to lock the adjustment tube 43. In this way, the seat cushion frame 30 can be adjusted to the highest position.

Referring to FIG. 9 , when it is necessary to adjust the seat cushion frame 30 to the middle position, firstly insert the positioning post 32 into the first positioning hole 211b, and then properly rotate the positions of the first support tube 41 and the adjustment tube 43, and place the adjustment tube 43 protrudes from the second support tube 42, and aligns the mounting hole 431 of the adjusting tube 43 with the second mounting hole 431b. Then use the first locking bolt 23 to pass through the strip hole 222 and cooperate with the first screw hole 321 of the positioning column 32 to realize the locking of the positioning column 32. Then, the first bushing 44 and the second bushing are 45 respectively snap into the corresponding second positioning holes 421, and finally, use the second locking bolts 46 to pass through the through holes 441 and the mounting holes 431 in turn, and screw them into the second screw holes 451 to lock the adjustment tube 43. In this way, the seat cushion frame 30 can be adjusted to the neutral position.

When it is necessary to adjust the seat cushion frame 30 to the lowest position, firstly insert the positioning post 32 into the first positioning hole 211c, then properly rotate the positions of the first support tube 41 and the adjustment tube 43, and retract the adjustment tube 43 to the third position. Inside the two supporting tubes 42 , and align the mounting holes 431 of the adjusting tubes 43 with the second mounting holes 431 c . Then use the first locking bolt 23 to pass through the strip hole 222 and cooperate with the first screw hole 321 of the positioning column 32 to realize the locking of the positioning column 32. Then, the first bushing 44 and the second bushing are 45 respectively snap into the corresponding second positioning holes 421, and finally, use the second locking bolts 46 to pass through the through holes 441 and the mounting holes 431 in turn, and screw them into the second screw holes 451 to lock the adjustment tube 43. In this way, the seat cushion frame 30 can be adjusted to the lowest position.

In the description of the present invention, numerous specific details are set forth. It will be understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention. The scope of the invention should be included in the scope of the claims and description of the present invention.

Claims (7)

1. A seat cushion height adjustment structure is characterized in that: comprising: frame body; a first adjustment assembly, which is disposed on the frame body, and a plurality of first positioning holes are disposed on the first adjustment assembly; a seat cushion frame, which can be connected with any one of the first positioning holes, the seat cushion frame has a horizontal bearing surface; and A second adjustment assembly whose length is adjustable, the second adjustment assembly is hinged with the seat cushion frame and the frame body respectively, and the hinged position of the second adjustment assembly and the frame body is located in the seat under the pedestal. 2 . The seat cushion height adjustment structure according to claim 1 , wherein the first adjustment assembly comprises a positioning plate and a first locking unit, the positioning plate is arranged on the frame body, and the One end of the positioning plate away from the head tube of the frame body is inclined downward, and the plurality of first positioning holes are arranged at intervals along the inclined direction of the inclined surface of the positioning plate; One end of the seat cushion frame close to the positioning plate is provided with a positioning column, and the positioning column is inserted and matched with the first positioning hole; The first locking unit is used for locking the positioning column in the first positioning hole. 3. The seat cushion height adjustment structure according to claim 2, wherein the first locking unit comprises a mounting plate and a first locking bolt; Two sides of the mounting plate are respectively bent to form bending portions, the bending portions are connected to the side of the positioning plate away from the seat cushion frame, the mounting plate is penetrated with a strip hole, and the strip is The shaped hole extends in a direction parallel to the inclined plane of the positioning plate; The first locking bolt can pass through the strip hole, and a first screw hole threadedly matched with the first locking bolt is provided on the end surface of the positioning column. 4. The seat cushion height adjustment structure according to claim 1, wherein the second adjustment assembly comprises a first support tube, a second support tube, an adjustment tube and the second locking unit; The first support tube is hinged on the frame body, the second support tube is arranged on the first support tube, one end of the adjustment tube is hinged with the seat cushion frame, and the adjustment tube is connected to the seat cushion frame. the second support tube is telescopic fit; The second locking unit is used for locking the adjustment tube on the second support tube. 5 . The height adjustment structure of the seat cushion according to claim 4 , wherein the second support tube penetrates through a plurality of groups of second positioning holes, and the plurality of groups of the second positioning holes are along the length of the second support tube. 6 . are arranged at intervals in the axial direction, the adjusting pipe is sleeved in the second support pipe, and the adjusting pipe is provided with a mounting hole; The second locking unit includes a first bushing, a second bushing and a second locking bolt, the first bushing and the second bushing are respectively arranged on both sides of the second support tube, Both the first bushing and the second bushing can be inserted into the second positioning holes on the corresponding side, and the first bushing is provided with a through hole through which the second locking bolt can pass , the second bushing is provided with a second screw hole that is threadedly matched with the second locking bolt, and the second locking bolt can pass through the mounting hole. 6 . The height adjustment structure of the seat cushion according to claim 5 , wherein: the end face of the first bushing facing the adjustment tube is provided with a first recessed portion, and the first recessed portion is connected to the adjustment tube. 7 . the outer wall of the The end face of the second bushing facing the regulating tube is provided with a second concave portion, and the second concave portion is matched with the outer wall of the regulating tube. 7 . The seat cushion height adjustment structure according to claim 4 , wherein the seat cushion frame is provided with a bracket in a “U” shape, the opening of the bracket is downward, and one end of the adjustment tube is provided with the bracket. 8 . There is a third support tube, and the third support tube is rotatably arranged in the bracket.

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