A lumbar support frame for a seat

Abstract

The utility model relates to electric seat technical field, specifically disclose a kind of waist support rack of seat, comprising: first support;Rotatablely erect second support on first support;Driving module is set on first support, the driving module includes drive main body, adapter bar and guide wheel, the adapter bar is connected with the output end of drive main body, the drive main body is used to drive adapter bar to make linear reciprocating motion, the guide wheel rotatably set on adapter bar;Inclined setting on the guide plate of second support, the guide wheel is abutted on guide plate and can move along guide plate;Elastomer is set between guide plate and first support.The utility model cooperates with guide plate and guide wheel, prolongs movement path, and then improve the adjustment range of angle, and the mode of rolling adjustment is more stable and smooth, improve the comfort of use.

Description

Technical Field

[0001] This utility model relates to the field of electric seat technology, specifically to a lumbar support frame for a seat. Background Technology

[0002] Current electric seats typically have multiple position rotation adjustment functions to improve user comfort. For example, the lumbar support position can be adjusted to adjust the tilt angle of the lumbar support. Such adjustment structures, such as the electric seat frame disclosed in patent number CN222982742U, achieve angle adjustment by hinged one end of an electric push rod to the rotating part. However, such structures have the problem of easy jerking during the adjustment process, and the adjustment angle is limited, leaving room for improvement. Utility Model Content

[0003] The purpose of this utility model is to provide a lumbar support frame for a seat to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: a lumbar support frame for a seat, comprising:

[0005] First support;

[0006] A second bracket that can be rotatably mounted on the first bracket;

[0007] The drive module is mounted on the first bracket. The drive module includes a drive body, a connecting rod, and a guide wheel. The connecting rod is connected to the output end of the drive body. The drive body is used to drive the connecting rod to make a linear reciprocating motion. The guide wheel is rotatably mounted on the connecting rod.

[0008] An inclined guide plate is mounted on the second bracket, and the guide wheel abuts against the guide plate and can move along the guide plate;

[0009] An elastic body is disposed between the guide plate and the first bracket.

[0010] Furthermore, the first bracket includes a first crossbeam and first side plates disposed at both ends of the first crossbeam. A first mounting plate is disposed on the first crossbeam, and the first mounting plate is used to mount the drive body.

[0011] Furthermore, a second mounting plate is provided on the first crossbeam, which is used to connect the elastomer.

[0012] Furthermore, the first side plate includes a first substrate and a first connecting plate disposed on one side of the first substrate.

[0013] Furthermore, the second support includes a second crossbeam and second side plates disposed at both ends of the second crossbeam, a support plate is disposed between the two second side plates, the support plate is disposed parallel to the second crossbeam, the second side plates are rotatably connected to and parallel to the first side plates, and the first crossbeam is disposed parallel to the second crossbeam.

[0014] Furthermore, the second side plate includes a second base plate and a second connecting plate disposed on one side of the second base plate, wherein the first connecting plate is rotatably connected to one end of the second base plate, and the second connecting plate is connected to the support plate.

[0015] Furthermore, the guide plate is disposed on the second crossbeam, and a connecting plate is disposed on one of the guide plates for connecting the elastic body.

[0016] Furthermore, a guide strip is formed by a protrusion in the middle of the guide plate, the guide strip corresponds to the groove on the guide wheel, and both ends of the guide plate are bent inward.

[0017] Furthermore, the guide plate has a tail plate at its rear end, the tail plate being connected to the second crossbeam, and the guide strip extending to the tail plate.

[0018] This utility model has the following beneficial effects:

[0019] This invention extends the movement path by combining the guide plate and the guide wheel, thereby increasing the angle adjustment range. At the same time, the rolling adjustment method is more stable and smooth, improving the comfort of use. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the lumbar support frame of the seat in Example 1;

[0022] Figure 2 for Figure 1 Side view of the first side panel;

[0023] Figure 3 for Figure 1 Side view of the second side panel;

[0024] Figure 4 for Figure 1 Enlarged schematic diagram of the drive module;

[0025] Figure 5 for Figure 1 Enlarged schematic diagram of the center guide plate;

[0026] Figure 6 for Figure 5 A side view diagram.

[0027] Figure label:

[0028] First bracket 10; first crossbeam 11; first side plate 12; first base plate 121; first connecting plate 122; first mounting plate 13; second mounting plate 14; second bracket 20; second crossbeam 21; second side plate 22; second base plate 221; second connecting plate 222; support plate 23; drive module 30; drive body 31; adapter rod 32; guide wheel 33; guide plate 40; guide strip 41; tail plate 42; elastic body 50; sub-plate 60. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1

[0031] like Figures 1-6 As shown, the lumbar support frame of the seat in this embodiment is mainly used to adjust the angle of the lumbar support position. It is mainly composed of a first bracket 10, a second bracket 20 rotatably mounted on the first bracket 10, a drive module 30 mounted on the first bracket 10, a guide plate 40 inclined on the second bracket 20, and an elastic body 50 disposed between the guide plate 40 and the first bracket 10. The drive module 30 drives the second bracket 20 to rotate relative to the first bracket 10 to achieve angle adjustment. The elastic body 50 holds the second bracket 20 and the first bracket 10 together to prevent loosening.

[0032] Here, the second support 20 is mounted on the first support 10, and there is an overlapping area between the two.

[0033] Specifically, the drive module 30 includes a drive body 31, a connecting rod 32, and guide wheels 33. The connecting rod 32 is connected to the output end of the drive body 31. The drive body 31 is used to drive the connecting rod 32 to make a linear reciprocating motion. The guide wheels 33 are rotatably mounted on the connecting rod 32. The drive body 31 is an electric push rod. The connecting rod 32 is perpendicularly connected to the output end of the drive body 31. Two guide wheels 33 are sleeved on the connecting rod 32 and located on both sides of the output end. The guide wheels 33 abut against the guide plate 40 and can move along the guide plate 40.

[0034] The first bracket 10 includes a first crossbeam 11 and first side plates 12 disposed at both ends of the first crossbeam 11. A first mounting plate 13 is disposed on the first crossbeam 11 for mounting the drive body 31. A second mounting plate 14 is disposed on the first crossbeam 11 for connecting the elastic body 50.

[0035] Correspondingly, the second support 20 includes a second crossbeam 21 and second side plates 22 disposed at both ends of the second crossbeam 21. A support plate 23 is disposed between the two second side plates 22. The support plate 23 is disposed parallel to the second crossbeam 21. The support plate 23 is the bearing part of the human waist. Its width is relatively wide, slightly smaller than the length of the guide plate 40, and it does not contact the guide plate 40. The second side plate 22 is rotatably connected to the first side plate 12 and is disposed parallel to it. The first crossbeam 11 is disposed parallel to the second crossbeam 21.

[0036] Additionally, two guide plates 40 are arranged side by side and at an angle on the second crossbeam 21. One of the guide plates 40 is provided with a sub-plate 60, which is used to connect the elastic body 50. That is, the two ends of the elastic body 50 are inserted into the connecting plate 60 and the second mounting plate 14. The elastic body 50 is a tension spring.

[0037] Here, the first side plate 12 includes a first substrate 121 and a first connecting plate 122 disposed on one side of the first substrate 121, and the second side plate 22 includes a second substrate 221 and a second connecting plate 222 disposed on one side of the second substrate. The first connecting plate 122 is rotatably connected to one end of the second substrate 221, that is, the end away from the second connecting plate 222. The second connecting plate 222 is connected to the support plate 23.

[0038] The guide plate 40 has a central protrusion forming a guide strip 41. The guide wheel 33 has a V-shaped wheel structure with a V-shaped groove. The guide strip 41 corresponds to the groove on the guide wheel 33. The two ends of the guide plate 40 are bent inward. The tail of the guide plate 40 has a tail plate 42. The tail plate 42 is connected to the second crossbeam 21 by welding. The guide strip 41 extends to the tail plate 42. The width of the tail plate 42 is smaller than the width of the rest of the guide plate 40.

[0039] When in use, start the drive body 31, and the guide wheel 33 moves forward or retracts along with the adapter rod 32 on the guide plate 40, which in turn drives the second bracket 20 to rotate against the elastic force of the tension spring, thus realizing the waist position adjustment.

[0040] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A lumbar support frame for a chair, characterized in that, include: First support; A second bracket that can be rotatably mounted on the first bracket; The drive module is mounted on the first bracket. The drive module includes a drive body, a connecting rod, and a guide wheel. The connecting rod is connected to the output end of the drive body. The drive body is used to drive the connecting rod to make a linear reciprocating motion. The guide wheel is rotatably mounted on the connecting rod. An inclined guide plate is mounted on the second bracket, and the guide wheel abuts against the guide plate and can move along the guide plate; An elastic body is disposed between the guide plate and the first bracket.

2. The lumbar support frame for a seat according to claim 1, characterized in that: The first bracket includes a first crossbeam and first side plates disposed at both ends of the first crossbeam. A first mounting plate is disposed on the first crossbeam, and the first mounting plate is used to mount the drive body.

3. The lumbar support frame for a seat according to claim 2, characterized in that: A second mounting plate is provided on the first crossbeam, and the second mounting plate is used to connect the elastic body.

4. The lumbar support frame for a seat according to claim 3, characterized in that: The first side plate includes a first substrate and a first connecting plate disposed on one side of the first substrate.

5. The lumbar support frame for a seat according to claim 4, characterized in that: The second support includes a second crossbeam and second side plates disposed at both ends of the second crossbeam. A support plate is disposed between the two second side plates. The support plate is disposed parallel to the second crossbeam. The second side plates are rotatably connected to and parallel to the first side plates. The first crossbeam is disposed parallel to the second crossbeam.

6. The lumbar support frame for a seat according to claim 5, characterized in that: The second side plate includes a second base plate and a second connecting plate disposed on one side of the second base plate. The first connecting plate is rotatably connected to one end of the second base plate, and the second connecting plate is connected to the support plate.

7. The lumbar support frame for a seat according to claim 6, characterized in that: The guide plate is mounted on the second crossbeam, and a connecting plate is mounted on one of the guide plates for connecting the elastic body.

8. The lumbar support frame for a seat according to claim 7, characterized in that: The guide plate has a central protrusion forming a guide strip, which corresponds to the groove on the guide wheel, and both ends of the guide plate are bent inward.

9. A lumbar support frame for a seat according to claim 8, characterized in that: The guide plate has a tail plate at its rear end, the tail plate is connected to the second crossbeam, and the guide strip extends to the tail plate.

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