Seat backrest with adjustable sliding rail structure

Abstract

The utility model discloses a seat backrest with an adjustable sliding rail structure. The seat backrest comprises a backrest unit and a sliding rail unit, wherein the backrest unit comprises a backrest plate and an adjustable back plate arranged on the inner side of the backrest plate; the disengagement-free sliding rail unit comprises two concave covers symmetrically arranged on the inner side of the backrest plate, corresponding strip-shaped sliding rails are formed in the concave covers, connecting blocks matched with the strip-shaped sliding rails are slidably installed on the back side of the adjustable back plate, and clamping columns symmetrical in position are fixedly connected to the side, away from the adjustable back plate, of each connecting block. The clamping columns penetrate through the strip-shaped sliding rails and are matched with the strip-shaped sliding rails, corresponding fastening bolts are arranged in the strip-shaped sliding rails, and the fastening bolts penetrate through the strip-shaped sliding rails and are in threaded connection with the connecting blocks. When the backrest is adjusted, the backrest and the fastening bolt do not need to be detached from the backrest plate, only the fastening bolt needs to be unscrewed, operation is easy, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of seat backrests, in particular to a seat backrest with an adjustable slide rail structure. Background Art

[0002] The seat back is what a person leans against when sitting, a cushion for back support, or the part of the chair for a person to lean back on. It is designed to provide support and comfort for the person sitting. Generally speaking, the seat back occupies an important position in seat design and is of great significance for improving riding comfort and health.

[0003] During the long-term use of seats, in order to adapt to the usage habits of different groups of people, the seat backrests on the market that can adjust the backrest height are favored by more and more users. When adjusting the backrest of this type of seat, it is necessary to loosen the bolts in turn, move the backrest that needs to be adjusted up or down, and then re-tighten the fastening bolts. This adjustment method requires disassembly of the backrest and the fastening bolts, which is cumbersome and inconvenient to use. Therefore, it is necessary to design a seat backrest with an adjustable slide rail structure to solve the above problem. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above problems existing in the existing seat back with an adjustable slide rail structure, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a seat backrest with an adjustable slide rail structure, which is suitable for solving the problem that when adjusting the backrest, it is necessary to loosen the bolts in sequence, move the backrest to be adjusted up or down, and then retighten the fastening bolts. This adjustment method requires disassembling the backrest and the fastening bolts, which is cumbersome and inconvenient to use.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a seat back with an adjustable slide rail structure, comprising:

[0008] The backrest unit includes a backrest plate and an adjustable back plate arranged on the inner side of the backrest plate;

[0009] The non-slip slide rail unit includes two recessed covers symmetrically arranged on the inner side of the backrest plate, the recessed covers are provided with corresponding strip slide rails, and a connecting block matching the strip slide rails is slidably installed on the back side of the adjustable back plate, each of the connecting blocks is fixedly connected with a symmetrically positioned clamping column on the side away from the adjustable back plate, and the clamping column passes through the strip slide rail and is matched with the strip slide rail, corresponding fastening bolts are arranged in the strip slide rail, and the fastening bolts pass through the strip slide rail and are threadedly connected to the connecting block.

[0010] As a preferred solution of a seat backrest with an adjustable slide rail structure described in the utility model, the non-slip slide rail unit also includes a sliding assembly, which includes a plurality of spherical slide grooves symmetrically opened in the adjustable back plate and a spherical slider slidably installed in the spherical slide grooves, a strip opening connected to the spherical slide grooves is opened on the outer side of the adjustable back plate, and the width of the strip opening is smaller than the outer diameter of the spherical slider, the connecting block is fixedly connected to a side away from the back plate with symmetrically positioned connecting rods, and each of the connecting rods passes through the strip opening and is fixedly connected to the corresponding spherical slider.

[0011] As a preferred solution of a seat backrest with an adjustable slide rail structure described in the utility model, a rectangular slider symmetrical to the position of the fastening bolt is fixedly installed on the side of each connecting block away from the backrest plate, and a rectangular slide groove matching the rectangular slider is opened on the adjustable back plate.

[0012] As a preferred solution of the seat back with an adjustable slide rail structure described in the utility model, a plurality of groups of evenly distributed anti-slip protrusions are fixedly provided on the edge of the head of each fastening bolt, and the head of the fastening bolt is wrapped with a layer of plastic pad.

[0013] As a preferred solution of the seat back with an adjustable slide rail structure described in the utility model, the depth of the recessed cover is two to three times the thickness of the backrest board, and the thickness of the adjustable backboard is consistent with that of the backrest board.

[0014] As a preferred solution of the seat back with an adjustable slide rail structure described in the utility model, the length of the strip slide rail is greater than half of the height of the backrest board, and the inner wall pad of the adjustable backboard is provided with a soft sponge pad with uniform thickness.

[0015] The beneficial effects of the utility model are as follows: when the height of the adjustable backboard needs to be adjusted, the fastening bolts are loosened at this time, and the connecting block is moved along the strip-type slide rail to adjust the position of the adjustable backboard. After the position of the adjustable backboard is adjusted, its position is kept different, and the connecting block is pushed to make the clamping column and the notch on the strip-type slide rail get stuck, and then the fastening bolts are tightened to make the fastening bolts and the strip-type slide rail tightly abut against each other, so that the position of the adjustable backboard can be fixed. When adjusting the backrest, there is no need to remove the backrest and the fastening bolts from the backrest board, and only the fastening bolts need to be loosened. The operation is simple and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0017] Figure 1 This is a schematic diagram of the overall structure of a seat back with an adjustable slide rail structure proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of a non-detachable slide rail unit structure of a seat back with an adjustable slide rail structure proposed by the utility model;

[0019] Figure 3 This is a schematic diagram of the matching structure of a connecting block and a non-detachable slide rail unit of a seat back with an adjustable slide rail structure proposed by the utility model;

[0020] Figure 4 The utility model is a schematic diagram of a sliding assembly structure of a seat back with an adjustable slide rail structure.

[0021] Description of the drawings: 100 backrest unit, 101 backrest plate, 102 adjustable back plate, 200 free-slip slide rail unit, 201 recessed cover, 202 strip slide rail, 203 connecting block, 204 clamping column, 205 fastening bolt, 206 sliding assembly, 206a spherical slide groove, 206b strip opening, 206c spherical slider, 206d connecting rod, 206e rectangular slide groove, 206f rectangular slider. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0025] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0026] Example

[0027] Reference Figure 1-Figure 4 , which is an embodiment of the utility model, provides a seat back with an adjustable slide rail structure, including: a backrest unit 100 and a non-detachable slide rail unit 200.

[0028] The backrest unit 100 includes a backrest board 101 and an adjustable backrest board 102 disposed inside the backrest board 101;

[0029] The anti-slip slide rail unit 200 includes two recessed covers 201 symmetrically arranged on the inner side of the backrest plate 101, and corresponding strip slide rails 202 are opened on the recessed covers 201. The depth of the recessed covers 201 is two to three times the thickness of the backrest plate 101. This arrangement is to ensure that there is enough space in the recessed covers 201 to accommodate the protruding parts of the clamping columns 204 and the fastening bolts 205, to avoid the clamping columns 204 and the fastening bolts 205 protruding from the backrest plate 101, thereby improving the overall aesthetics of the seat backrest. The adjustable back plate 102 is consistent in thickness with the back plate 101, the length of the strip slide rail 202 is greater than half of the height of the back plate 101, and the inner wall pad of the adjustable back plate 102 is provided with a soft sponge pad of uniform thickness. This arrangement ensures that the adjustable back plate 102 has a sufficient height adjustment range. The design of the soft sponge pad The overall performance of the adjustable back plate 102 is improved, and a connecting block 203 matching the bar slide rail 202 is slidably installed on the back side of the adjustable back plate 102, and each connecting block 203 is fixedly connected with a symmetrically positioned clamping column 204 on the side away from the adjustable back plate 102, and the clamping column 204 passes through the bar slide rail 202 and is matched with the bar slide rail 202, and a corresponding fastening bolt 205 is arranged in the bar slide rail 202, and the fastening bolt 205 passes through the bar slide rail 202 and is threadedly connected to the connecting block 203, and a plurality of groups of evenly distributed anti-skid protrusions are fixedly arranged at the edge of the head of each fastening bolt 205, and the head of the fastening bolt 205 is wrapped with a layer of plastic pad. The setting of the anti-skid protrusion makes it convenient for the staff to turn the fastening bolt 205, and the setting of the plastic pad improves the use experience of the fastening bolt 205.

[0030] The anti-slip slide rail unit 200 also includes a sliding assembly 206, which includes a plurality of spherical grooves 206a symmetrically opened in the adjustable back plate 102 and a spherical slider 206c slidably installed in the spherical grooves 206a. A strip opening 206b connected to the spherical groove 206a is opened on the outer side of the adjustable back plate 102, and the width of the strip opening 206b is smaller than the outer diameter of the spherical slider 206c. The connecting block 203 is fixedly connected to a side away from the backrest plate 101 with a symmetrically positioned connecting rod 206d, and each connecting rod 206d passes through the strip opening 206b and is fixedly connected to the corresponding spherical slider 206c.

[0031] A rectangular slider 206f symmetrically positioned with the fastening bolt 205 is fixedly installed on one side of each connecting block 203 away from the backrest plate 101, and a rectangular slide groove 206e matching the rectangular slider 206f is provided on the adjustable back plate 102; through the coordinated use of the rectangular slider 206f and the rectangular slide groove 206e, the sliding stability of the connecting block 203 and the adjustable back plate 102 is improved, and at the same time, it is ensured that the rectangular slider 206f cooperates with the connecting block 203 to have sufficient depth to tighten the fastening bolt 205, thereby fixing the connecting block 203.

[0032] During use, when the height of the adjustable backboard 102 needs to be adjusted, the fastening bolts 205 are loosened at this time, and the connecting block 203 is moved along the strip slide rail 202 to adjust the position of the adjustable backboard 102. After the position of the adjustable backboard 102 is adjusted, its position is kept different, and the connecting block 203 is pushed to make the clamping column 204 and the notch on the strip slide rail 202 be stuck, and then the fastening bolts 205 are tightened to make the fastening bolts 205 tightly against the strip slide rail 202, so that the position of the adjustable backboard 102 can be fixed. When adjusting the backrest, there is no need to remove the backrest and the fastening bolts 205 from the backrest plate 101, only the fastening bolts 205 need to be loosened, which is simple to operate and easy to use.

[0033] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A seat back with an adjustable slide rail structure, characterized in that: include: A backrest unit (100), comprising a backrest board (101) and an adjustable backboard (102) arranged inside the backrest board (101); The slide rail unit (200) includes two recessed covers (201) symmetrically arranged on the inner side of a backrest plate (101), the recessed covers (201) are provided with corresponding strip slide rails (202), and a connecting block (203) matching the strip slide rails (202) is slidably installed on the back side of the adjustable back plate (102), each of the connecting blocks (203) is fixedly connected with a symmetrically positioned clamping column (204) on a side away from the adjustable back plate (102), and the clamping column (204) passes through the strip slide rail (202) and is matched with the strip slide rail (202), and corresponding fastening bolts (205) are arranged in the strip slide rail (202), and the fastening bolts (205) pass through the strip slide rail (202) and are threadedly connected to the connecting block (203).

2. The seat back with an adjustable slide rail structure according to claim 1, characterized in that: The anti-slip rail unit (200) further comprises a sliding assembly (206), which comprises a plurality of spherical slide grooves (206a) symmetrically arranged in the adjustable back plate (102) and spherical sliders (206c) slidably installed in the spherical slide grooves (206a); a strip opening (206b) communicating with the spherical slide grooves (206a) is arranged on the outer side of the adjustable back plate (102); the width of the strip opening (206b) is smaller than the outer diameter of the spherical slider (206c); a symmetrical connecting rod (206d) is fixedly connected to the side of the connecting block (203) away from the backrest plate (101); each of the connecting rods (206d) passes through the strip opening (206b) and is fixedly connected to the corresponding spherical slider (206c).

3. The seat back with an adjustable slide rail structure according to claim 2, characterized in that: A rectangular sliding block (206f) symmetrically positioned with the fastening bolt (205) is fixedly mounted on one side of each connecting block (203) away from the backrest plate (101), and a rectangular sliding groove (206e) matching the rectangular sliding block (206f) is provided on the adjustable back plate (102).

4. The seat back with an adjustable slide rail structure according to claim 1, characterized in that: A plurality of groups of evenly distributed anti-slip protrusions are fixedly arranged at the edge of the head of each fastening bolt (205), and the head of the fastening bolt (205) is wrapped with a layer of plastic pad.

5. The seat back with an adjustable slide rail structure according to claim 1, characterized in that: The depth of the recessed cover (201) is two to three times the thickness of the backrest board (101), and the thickness of the adjustable backboard (102) is consistent with that of the backrest board (101).

6. The seat back with an adjustable slide rail structure according to claim 1, characterized in that: The length of the strip-shaped slide rail (202) is greater than half the height of the backrest board (101), and the inner wall of the adjustable backrest board (102) is padded with a soft sponge pad with uniform thickness.

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