Seat backrest with adjusting and positioning functions

Abstract

The utility model discloses a seat backrest with adjusting and positioning functions, which comprises a supporting unit, the supporting unit comprises a supporting backup plate, two operation grooves are formed in the supporting backup plate, two inner concave plates are fixed on one side of the supporting backup plate, the operation grooves are communicated with the inner concave plates, a plurality of transverse grooves are formed in the inner concave plates at equal intervals, vertical grooves are formed in the inner concave plates, and the transverse grooves are communicated with the vertical grooves. And the vertical groove is communicated with the transverse groove. After a movable backup plate is adjusted to the required height, a positioning plate is rotated to enable a positioning column to be clamped into a transverse groove, a grip is rotated to drive a hollow rectangular plate, a disc and the positioning plate to move in the direction close to a supporting backup plate, a clamping column is embedded into a clamping groove, the limiting effect is achieved, and when the clamping column is embedded into the corresponding clamping groove, the positioning plate cannot rotate at the moment, so that the positioning plate cannot rotate; the positioning columns are limited in the corresponding transverse grooves, at the moment, the positioning columns also play a role in limiting and supporting, the multiple limiting and supporting roles can be achieved only by rotating the two screw rods, and operation is convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of seat backrests, in particular to a seat backrest with an adjustment and positioning function. Background Art

[0002] The seat back refers to the part of the seat that is against the body. Its function is to support the waist and back, making people more comfortable and stable when sitting. The seat back can help people improve bad sitting habits and reduce or prevent waist and back pain caused by sitting in the same posture for a long time.

[0003] The design of the seat back should conform to the principles of human mechanics to minimize the pressure on the spine. Most of the existing seat backs are adjustable. The adjustable seat backs are composed of a support back plate and a movable back plate. By opening multiple sets of mounting holes on the support back plate and fixing the movable back plate and the support back plate with bolts, the height of the movable back plate can be adjusted so that the seat back can meet the needs of users of different heights. In this type of installation using bolts, the connection between the nut and the bolt is exposed, which is easy to cause scratches, and usually multiple sets of bolts are required to fix it to maintain its stability. The installation of multiple sets of bolts increases the cumbersomeness of adjustment, and the adjustment also requires the use of tools such as wrenches, which is troublesome to operate. 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-mentioned problem of a seat back with an adjustable positioning function, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a seat back with an adjustable positioning function, which is used to solve the problem that the connection between the nut and the bolt is exposed and easily scratched when installed using bolts, and usually multiple sets of bolts are required to fix it in order to maintain its stability. The installation of multiple sets of bolts increases the complexity of adjustment, and the adjustment requires the use of tools such as wrenches, which makes the operation cumbersome.

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

[0008] A support unit, comprising a support plate, wherein two operation grooves are provided in the support plate, two inner concave plates are fixed on one side of the support plate, and the operation grooves are connected to the inner concave plates, a plurality of transverse grooves are provided in the inner concave plates at equal intervals, a vertical groove is provided in the inner concave plates, and the vertical grooves are connected to the transverse grooves;

[0009] The adjusting unit comprises a movable backing plate, wherein two positioning plates are arranged on one side of the movable backing plate close to the supporting backing plate, and two positioning columns are fixed on one side of the positioning plate away from the movable backing plate, and the positioning columns can be embedded in the transverse groove.

[0010] As a preferred solution of the seat back with adjustable positioning function described in the utility model, two rectangular frames are fixed on one side of the movable backrest close to the supporting backrest, and a hollow rectangular plate is slidably connected to the outer side of the rectangular frame.

[0011] As a preferred solution of the seat back with adjustable positioning function described in the utility model, the movable backrest is rotatably connected to one side of the supporting backrest close to two screws, and the screws are located in the rectangular frame. The screws pass through the hollow rectangular plate and are threadedly connected to the hollow rectangular plate.

[0012] As a preferred solution of a seat back with an adjustable positioning function described in the utility model, a handle is fixed to the end of the screw away from the movable backrest, the diameter of the handle is smaller than the width of the operating groove, the length of the screw is smaller than the height of the inner concave plate, and the screw is slidably fitted in the vertical groove.

[0013] As a preferred solution of a seat back with an adjustable positioning function described in the utility model, two slots are provided in the positioning plate, a plurality of posts are fixed at equal intervals on one side of the inner concave plate close to the movable backrest plate, and the posts can be embedded in the corresponding slots.

[0014] As a preferred solution of a seat back with an adjustable positioning function described in the utility model, a circular groove is opened in the positioning plate, an annular groove is opened on the inner wall of the circular groove, a circular disc is fixed on the outer side of the hollow rectangular plate, an annular plate is fixed on the outer side of the circular disc, and the annular plate rotates in the annular groove.

[0015] The beneficial effects of the utility model are as follows: after adjusting the movable support plate to the required height, the positioning plate is rotated so that the positioning column is stuck in the transverse groove, and the handle is rotated to drive the hollow rectangular plate, the disc, and the positioning plate to move toward the supporting plate, so that the clamping column is embedded in the clamping groove to play a limiting role, and when the clamping column is embedded in the corresponding clamping groove, the positioning plate cannot be rotated at this time, that is, the positioning column is constrained in the corresponding transverse groove. At this time, the positioning column also plays the role of limiting support. Various limiting support functions only require rotating two screws, which is easy to operate, and the handle is stored in the operating groove, which is not only beautiful but also avoids scratches. 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 labor. Among them:

[0017] Figure 1 The utility model is a structural schematic diagram of a seat back with an adjustable positioning function.

[0018] Figure 2 The utility model is a schematic diagram of the split structure of a seat back with an adjustable positioning function.

[0019] Figure 3 This is a structural schematic diagram of the support unit provided by the utility model from another perspective.

[0020] Figure 4 The utility model is a partial structural sectional view of a seat back with an adjustable positioning function.

[0021] Description of the drawings: 100, supporting unit; 101, supporting plate; 102, operating groove; 103, concave plate; 104, vertical groove; 105, horizontal groove; 106, clamping column; 200, adjusting unit; 201, movable plate; 202, positioning plate; 203, positioning column; 204, clamping groove; 205, screw; 206, rectangular frame; 207, hollow rectangular plate; 208, disc; 209, handle; 210, circular groove; 211, annular groove; 212, annular plate. 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] Reference Figure 1-Figure 4 , which is an embodiment of the utility model, provides a seat back with an adjustable positioning function, which includes: a support unit 100 and an adjustment unit 200;

[0027] The support unit 100 includes a support plate 101, in which two operation grooves 102 are provided, two inner concave plates 103 are fixed on one side of the support plate 101, and the operation grooves 102 are connected to the inner concave plates 103, a plurality of transverse grooves 105 are provided at equal intervals in the inner concave plates 103, a vertical groove 104 is provided in the inner concave plates 103, and the vertical grooves 104 are connected to the transverse grooves 105;

[0028] The adjustment unit 200 includes a movable backing plate 201 . Two positioning plates 202 are arranged on one side of the movable backing plate 201 close to the supporting plate 101 . Two positioning columns 203 are fixed on the other side of the positioning plate 202 away from the movable backing plate 201 . The positioning columns 203 can be embedded in the transverse groove 105 .

[0029] In addition, two rectangular frames 206 are fixed to one side of the movable backing plate 201 close to the supporting backing plate 101, and a hollow rectangular plate 207 is slidably connected to the outer side of the rectangular frame 206. Two screws 205 are rotatably connected to one side of the movable backing plate 201 close to the supporting backing plate 101, and the screws 205 are located in the rectangular frame 206. The screws 205 penetrate the hollow rectangular plate 207 and are threadedly connected to the hollow rectangular plate 207. A handle 209 is fixed to the end of the screw 205 away from the movable backing plate 201. The diameter of the handle 209 is smaller than the width of the operating groove 102, and the length of the screw 205 is smaller than the height of the inner concave plate 103. The screw 205 slides in the vertical groove 104.

[0030] In addition, two slots 204 are provided in the positioning plate 202 , and a plurality of posts 106 are fixed at equal intervals on one side of the inner concave plate 103 close to the movable support plate 201 . The posts 106 can be embedded in the corresponding slots 204 .

[0031] When in use, when adjusting the height of the seat back, rotate the handle 209 to drive the hollow rectangular plate 207 to move closer to the movable backrest 201, that is, the hollow rectangular plate 207 moves closer to the movable backrest 201 on the outside of the rectangular frame 206, so that the hollow rectangular plate 207 drives the disc 208 and the positioning plate 202 to move closer to the movable backrest 201, so that the clamping column 106 moves out of the clamping groove 204, and then rotate the positioning plate 202 to move the positioning column 203 from the horizontal groove 105 to the vertical groove 104, and then the movable backrest 201 can be moved up and down. At this time, the positioning column 203 and the screw 205 slide in the vertical groove 104.

[0032] It should be noted that the length of the positioning column 203 is greater than the length of the clamping column 106 . When the clamping column 106 is moved out of the clamping slot 204 , the positioning column 203 is still located in the transverse slot 105 .

[0033] Furthermore, a circular groove 210 is formed in the positioning plate 202 , an annular groove 211 is formed on the inner wall of the circular groove 210 , a circular disc 208 is fixed to the outer side of the hollow rectangular plate 207 , an annular plate 212 is fixed to the outer side of the circular disc 208 , and the annular plate 212 rotates in the annular groove 211 .

[0034] When in use, after the height of the movable support plate 201 is adjusted, the positioning plate 202 is first rotated so that the positioning column 203 is stuck in the horizontal groove 105, and then the handle 209 is rotated in the opposite direction to drive the hollow rectangular plate 207 to move closer to the support plate 101, that is, the hollow rectangular plate 207 drives the disc 208 and the positioning plate 202 to move, and the positioning plate 202 is close to the support plate 101 so that the column 106 is embedded in the slot 204. This kind of adjusted fixing method only needs to rotate the screw 205 to control multiple columns 106 to be embedded in the corresponding slots 204, which plays a role of limiting. After the positioning plate 202 is rotated to make the positioning column 203 embedded in the corresponding transverse groove 105, the control column 106 is embedded in the corresponding slot 204. At this time, the positioning plate 202 cannot be rotated, that is, the positioning column 203 is constrained in the corresponding transverse groove 105. At this time, the positioning column 203 also plays the role of limiting support. A variety of limiting support functions only require rotating two screws 205, which is easy to operate, and the handle 209 is stored in the operating slot 102, which is not only beautiful but also avoids scratches.

[0035] 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 positioning function, characterized in that: include: A support unit (100) comprises a support plate (101), wherein two operating grooves (102) are provided in the support plate (101), two inner concave plates (103) are fixed on one side of the support plate (101), and the operating grooves (102) and the inner concave plates (103) are connected, a plurality of transverse grooves (105) are provided in the inner concave plates (103) at equal intervals, and a vertical groove (104) is provided in the inner concave plates (103), and the vertical groove (104) and the transverse groove (105) are connected; The adjustment unit (200) comprises a movable support plate (201), wherein two positioning plates (202) are arranged on a side of the movable support plate (201) close to the supporting support plate (101), two positioning columns (203) are fixed on a side of the positioning plate (202) away from the movable support plate (201), and the positioning columns (203) can be embedded in the transverse groove (105), and two rectangular frames (206) are fixed on a side of the movable support plate (201) close to the supporting support plate (101), and a hollow rectangular plate (207) is slidably connected to the outer side of the rectangular frame (206), and the positioning plate (202 ) is provided with two slots (204), a plurality of clamping columns (106) are fixed at equal intervals on one side of the inner concave plate (103) close to the movable support plate (201), and the clamping columns (106) can be embedded in the corresponding slots (204), a circular groove (210) is provided in the positioning plate (202), and an annular groove (211) is provided on the inner wall of the circular groove (210), a circular disk (208) is fixed on the outer side of the hollow rectangular plate (207), and an annular plate (212) is fixed on the outer side of the circular disk (208), and the annular plate (212) is located in the annular groove (211) and rotates.

2. The seat back with adjustable positioning function according to claim 1, characterized in that: Two screw rods (205) are rotatably connected to one side of the movable backing plate (201) close to the supporting backing plate (101), and the screw rods (205) are located in the rectangular frame (206). The screw rods (205) penetrate the hollow rectangular plate (207) and are threadedly connected to the hollow rectangular plate (207).

3. The seat back with adjustable positioning function according to claim 2, characterized in that: A handle (209) is fixed to one end of the screw rod (205) away from the movable support plate (201); the diameter of the handle (209) is smaller than the width of the operating slot (102); the length of the screw rod (205) is smaller than the height of the inner concave plate (103); and the screw rod (205) is slidably fitted in the vertical slot (104).

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