Adjustable passenger car seat backrest supporting and buffering structure

Abstract

The utility model relates to an adjustable passenger car seat backrest supporting and buffering structure, and belongs to the field of automobile accessories, the adjustable passenger car seat backrest supporting and buffering structure comprises a longitudinal support and a backrest shell, a buffering block is installed on the longitudinal support, and the two opposite sides of the buffering block abut against the longitudinal support and the backrest shell respectively. The amplitude and hardness of relative shaking between the longitudinal support and the backrest shell are reduced through the elasticity of the buffer blocks, and the use durability of the backrest and the comfort level of a user are improved.

Description

Technical Field

[0001] The present application relates to the field of automobile accessories, and in particular to an adjustable passenger car seat back support and buffer structure. Background Art

[0002] The seat back of the bus has an adjustment function, that is, the seat back of the bus can be rotated relative to the seat, thereby changing its own inclination angle.

[0003] The frame of the seat back includes a backrest shell and two longitudinal brackets. The two longitudinal brackets are located at opposite sides of the backrest. The backrest shell and the two longitudinal brackets are both connected to the seat for rotation. The backrest shell of the seat back is mounted on the longitudinal brackets and connected to them. The longitudinal brackets are inside the backrest shell to provide structural support for the backrest shell. An active gas spring is installed on the seat. The number of active gas springs corresponding to a single seat is one. The piston rod of the active gas spring is hinged to one of the longitudinal brackets. The axis of the hinge shaft is parallel to the rotation axis of the longitudinal bracket relative to the seat, and the longitudinal bracket is directly controlled for rotation.

[0004] The other longitudinal bracket can only rotate following the rotation of the longitudinal bracket directly connected to the active gas spring. Inside the backrest, the driven rotating longitudinal bracket can be regarded as the cantilever end of the overall frame of the backrest. This end has a torque on the active gas spring. With long-term use, the frame and the backrest shell will be deformed due to uneven force, resulting in a gradual increase in the gap between the two longitudinal brackets and the backrest shell. The user can clearly feel that the backrest will shake rigidly at multiple angles, affecting the user experience. Utility Model Content

[0005] In order to improve the above-mentioned problems, the present application provides an adjustable passenger car seat back support buffer structure.

[0006] The adjustable passenger car seat back support buffer structure provided in the present application adopts the following technical solution:

[0007] An adjustable passenger car seat back support buffer structure comprises a longitudinal bracket and a back shell, wherein a buffer block is mounted on the longitudinal bracket, and opposite sides of the buffer block respectively abut against the longitudinal bracket and the back shell.

[0008] By adopting the above technical solution, the buffer block abuts against the longitudinal bracket and the backrest shell at the same time, and uses its own elasticity to reduce the amplitude and hardness of the relative shaking between the two, thereby improving the durability of the backrest and the comfort of the user.

[0009] Preferably, a mounting pin is connected to the buffer block, a mounting hole for inserting the mounting pin is provided on the longitudinal bracket, and an expansion head is fixedly connected to the end side wall of the mounting pin.

[0010] By adopting the above technical solution, after the mounting pin is inserted into the mounting hole, the connecting plate and the expansion head are respectively located on opposite sides of the longitudinal bracket, and the mounting pin cannot be easily withdrawn from the mounting hole.

[0011] Preferably, a connecting plate is fixedly connected to the buffer block, the mounting pin is fixedly connected to the connecting plate, and the axis of the mounting pin is parallel to the surface on which the buffer block and the longitudinal bracket abut.

[0012] Preferably, the buffer block is also fixedly connected with a clamping ridge, the clamping ridge and the connecting plate are both located on the side of the buffer block facing the longitudinal bracket, and the clamping ridge and the connecting plate respectively abut against the opposite sides of the longitudinal bracket.

[0013] By adopting the above technical solution, the clamping ridges and the connecting plates jointly clamp the longitudinal bracket, thereby improving the relative stability of the buffer block and the longitudinal bracket.

[0014] Preferably, a deformation gap is provided on the mounting pin along its axis.

[0015] By adopting the above technical solution, the deformation gap can improve the smoothness of the radial expansion and contraction of the mounting pin and the expansion head.

[0016] Preferably, the buffer block, the connecting plate, the mounting pin, the expansion head and the clamping convex ridge are integrally formed, and the buffer block is made of rubber or nylon.

[0017] By adopting the above technical solution, the buffer block needs to have a certain degree of elasticity as well as a certain degree of hardness.

[0018] Preferably, an anti-retraction plug is movably provided on the longitudinal bracket, the anti-retraction plug is inserted into the deformation gap, and a control component for controlling the movement of the anti-retraction plug is provided on the longitudinal bracket.

[0019] By adopting the above technical solution, after the anti-retraction insert is inserted into the deformation gap, the installation pin and the expansion head cannot be radially contracted, thereby improving the relative stability of the installation pin and the longitudinal bracket.

[0020] Preferably, there are two mounting pins and two mounting holes, the control assembly includes a control screw and a control nut, a connecting tube is fixedly connected to the middle part of the anti-retraction plug, the control screw is fixedly connected to the longitudinal bracket, the axis of the control screw is parallel to the axis of the mounting hole, and the control screw is located between the two mounting holes, the connecting tube is sleeved on the control screw, the control nut is threadedly connected to the control screw, and the control nut abuts against one end of the connecting tube away from the longitudinal bracket.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] 1. Through the setting of the buffer block, the buffer block abuts against the longitudinal bracket and the backrest shell at the same time, and uses its own elasticity to reduce the amplitude and hardness of the relative shaking between the two, thereby improving the durability of the backrest and the comfort of the user;

[0023] 2. Through the setting of the deformation gap and the anti-retraction insert, the deformation gap can enable the mounting pin to radially expand and contract, so that the expansion head can smoothly pass through the mounting hole. After the expansion head passes through the mounting hole, the mounting insert is inserted into the deformation gap, and the mounting pin cannot easily shrink radially, that is, the expansion head is prevented from retreating, thereby improving the installation stability of the buffer block. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the adjustable passenger car seat back support buffer structure in the first embodiment of the present application.

[0025] Figure 2 It is a structural schematic diagram used to reflect the installation of the buffer block on the longitudinal bracket in the first embodiment of the present application.

[0026] Figure 3 It is a structural schematic diagram used to reflect the buffer block in the first embodiment of the present application.

[0027] Figure 4 It is a structural diagram used to reflect the control component in Example 2 of the present application.

[0028] Explanation of the reference numerals: 1. backrest shell; 2. longitudinal bracket; 21. mounting hole; 22. anti-retraction plug; 221. connecting tube; 3. buffer block; 31. connecting plate; 32. clamping ridge; 33. mounting pin; 331. expansion head; 332. deformation gap; 4. control assembly; 41. control nut; 42. control screw. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-4 This application is described in further detail.

[0030] Embodiment 1:

[0031] The present application embodiment discloses an adjustable passenger car seat back support buffer structure, such as Figure 1 As shown, it includes a longitudinal bracket 2 and a backrest shell 1, and the backrest shell 1 is sleeved outside the longitudinal bracket 2; the longitudinal bracket 2 and the backrest shell 1 are both connected to the seat for rotation, and in the rotation direction of the two, there is a gap between the side wall of the longitudinal bracket 2 and the inner wall of the backrest shell 1, and a buffer block 3 is arranged in the gap for buffering the two structures.

[0032] like Figure 1 , 2As shown in Figures 3 and 4, the buffer block 3 is a square block, and its opposite sides respectively abut the longitudinal bracket 2 and the backrest shell 1. The material of the buffer block 3 is an elastic material with high hardness, and rubber or nylon can be selected. The side of the buffer block 3 facing the longitudinal bracket 2 is integrally formed with a connecting plate 31 and a clamping ridge 32, and the clamping ridge 32 and the connecting plate 31 respectively abut the opposite sides of the longitudinal bracket 2. A mounting pin 33 is integrally formed on the connecting plate 31, and the axis of the mounting pin 33 is parallel to the surface where the buffer block 3 and the longitudinal bracket 2 abut. The longitudinal bracket 2 is provided with a mounting hole 21 for the mounting pin 33 to be inserted, and the end side wall of the mounting pin 33 is fixedly connected with an expansion head 331. In the natural state, the width of the expansion head 331 is larger than the aperture of the mounting hole 21. After the mounting pin 33 is inserted into the mounting hole 21, the connecting plate 31 and the expansion head 331 are respectively located on the opposite sides of the longitudinal bracket 2, and the mounting pin 33 cannot be easily withdrawn from the mounting hole 21. After the mounting pin 33 is inserted into the mounting hole 21, the buffer block 3 is close to the longitudinal bracket 2.

[0033] like Figure 2 and 3 As shown, in order to improve the smoothness of the expansion head 331 passing through the mounting hole 21, a deformation gap 332 is opened on the mounting pin 33 along its own axis, and the deformation gap 332 can improve the smoothness of the radial expansion and contraction of the mounting pin 33 and the expansion head 331.

[0034] Embodiment 2:

[0035] like Figure 4 As shown, on the basis of the first embodiment, this example is further provided with an anti-retraction plug 22, which is movably connected to the longitudinal bracket 2, and a control component 4 for controlling the movement of the anti-retraction plug 22 is provided on the longitudinal bracket 2, and the control component 4 can insert the anti-retraction plug 22 into the deformation gap 332. There are two mounting pins 33 and two mounting holes 21, and the two deformation gaps 332 are coplanar; the control component 4 includes a control screw 42 and a control nut 41, and the middle part of the anti-retraction plug 22 is fixedly connected with a connecting tube 221, and the control screw 42 is fixedly connected to the side of the longitudinal bracket 2 away from the connecting plate 31, and is located between the two mounting holes 21, and the axis of the control screw 42 is parallel to the axis of the mounting hole 21. The connecting tube 221 is sleeved on the control screw 42, and the control nut 41 is threadedly connected to the control screw 42. After both mounting pins 33 are inserted into their respective mounting holes 21, the connecting tube 221 of the anti-retraction insert 22 is sleeved onto the control screw 42, and the anti-retraction insert 22 is inserted into the two deformation gaps 332, and then the control nut 41 is screwed onto the control screw 42, and the control nut 41 abuts against the end of the connecting tube 221 that is away from the longitudinal bracket 2. In a natural state, there is a certain abutment force between the anti-retraction insert 22 and the mounting pin 33, so that the mounting pin 33 and the expansion head 331 cannot be radially contracted, thereby improving the relative stability of the mounting pin 33 and the longitudinal bracket 2.

[0036] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An adjustable passenger car seat back support and buffer structure, comprising a longitudinal bracket (2) and a backrest shell (1), characterized in that: A buffer block (3) is mounted on the longitudinal bracket (2), and opposite sides of the buffer block (3) abut against the longitudinal bracket (2) and the backrest shell (1) respectively; The buffer block (3) is connected to a mounting pin (33), the longitudinal bracket (2) is provided with a mounting hole (21) for inserting the mounting pin (33), and the end side wall of the mounting pin (33) is fixedly connected to an expansion head (331); The mounting pin (33) has a deformation gap (332) extending through the mounting pin (33) along its axis; An anti-retraction insert (22) is movably provided on the longitudinal bracket (2), the anti-retraction insert (22) is inserted into the deformation gap (332), and a control component (4) for controlling the movement of the anti-retraction insert (22) is provided on the longitudinal bracket (2).

2. The adjustable passenger car seat back support buffer structure according to claim 1, characterized in that: The buffer block (3) is fixedly connected to a connection plate (31), the mounting pin (33) is fixedly connected to the connection plate (31), and the axis of the mounting pin (33) is parallel to the surface where the buffer block (3) and the longitudinal bracket (2) abut.

3. The adjustable passenger car seat back support buffer structure according to claim 2, characterized in that: The buffer block (3) is also fixedly connected with a clamping ridge (32), the clamping ridge (32) and the connecting plate (31) are both located on the side of the buffer block (3) facing the longitudinal bracket (2), and the clamping ridge (32) and the connecting plate (31) respectively abut against opposite sides of the longitudinal bracket (2).

4. The adjustable passenger car seat back support buffer structure according to claim 3, characterized in that: The buffer block (3), the connecting plate (31), the mounting pin (33), the expansion head (331) and the clamping ridge (32) are integrally formed, and the buffer block (3) is made of rubber or nylon.

5. The adjustable passenger car seat back support buffer structure according to claim 1, characterized in that: The mounting pins (33) and mounting holes (21) are both provided with two, the control assembly (4) comprises a control screw (42) and a control nut (41), the middle part of the anti-retraction plug (22) is fixedly connected with a connecting tube (221), the control screw (42) is fixedly connected to the longitudinal bracket (2), the axis of the control screw (42) is parallel to the axis of the mounting hole (21), and the control screw (42) is located between the two mounting holes (21), the connecting tube (221) is sleeved on the control screw (42), the control nut (41) is threadedly connected to the control screw (42), and the control nut (41) abuts against one end of the connecting tube (221) facing away from the longitudinal bracket (2).

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