Waist rest

Abstract

A waist rest comprises a back plate and at least one supporting assembly arranged on the back plate, each supporting assembly comprises a cross beam and two supporting plates, the two supporting plates are arranged on the cross beam in a bilateral symmetry mode through elastic assemblies, the cross beam is arranged on the back plate in an up-down moving and adjusting mode, a sliding rail extending up and down is arranged on the front face of the back plate, and the cross beam is in sliding fit with the sliding rail. A locking mechanism is arranged on the cross beam, a plurality of locking holes which are arranged at intervals in the length direction of the sliding rail are formed in the sliding rail, the locking mechanism comprises locking pins which can be inserted into or separated from the locking holes, and when the locking pins are inserted into the locking holes, the vertical movement of the cross beam can be limited; when the locking pin is separated from the locking hole, the cross beam can move up and down, the two supporting plates used for supporting the waist and the back of the human body are symmetrically arranged on the cross beam, the cross beam is connected with the back plate in an up-down moving mode through the sliding rail and the locking mechanism, and therefore the heights of the two supporting plates can be adjusted at the same time.

Description

Technical Field

[0001] This utility model relates to a lumbar support. Background Technology

[0002] Chinese patent document CN216147631U discloses a height adjustment mechanism and a backrest device. The height adjustment mechanism includes a frame, a first compression spring, a locking plate, and a locking block. The locking block is positioned within the receiving space of the frame via the first compression spring. The frame, through a locking pin on the locking block, engages with a one-way locking groove on the locking plate, as well as a vertical slide and a reset slide, enabling one-way self-locking height adjustment. The backrest device includes two backrest plates spaced apart horizontally. Each backrest plate has a buffer connection on its back side, and each buffer connection is connected to the backrest plate via a height adjustment mechanism. This structure, where the two backrest plates can be adjusted independently, is not ergonomic. Typically, a symmetrical structure between the two backrest plates is more ergonomic. Therefore, it is unnecessary to provide two height adjustment mechanisms to achieve independent adjustment of the two backrest plates, as this not only increases cost but also hinders height adjustment. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a lumbar support that is easily adjustable in height and conforms to ergonomic principles.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A lumbar support includes a back panel and at least one set of support components disposed on the back panel. The support components include a crossbeam and two support plates, which are symmetrically disposed on the crossbeam via elastic components. The crossbeam is adjustablely disposed on the back panel. A vertically extending slide rail is provided on the front of the back panel, and the crossbeam slides in conjunction with the slide rail. A locking mechanism is provided on the crossbeam, and multiple locking holes are spaced apart along the length of the slide rail. The locking mechanism includes a locking pin that can be inserted into or disengaged from the locking hole. When the locking pin is inserted into the locking hole, the vertical movement of the crossbeam is restricted; when the locking pin is disengaged from the locking hole, the crossbeam can move vertically.

[0006] In the above scheme, two support plates for supporting the human waist and back are symmetrically arranged on the crossbeam. The crossbeam is connected to the back plate by a slide rail and a locking mechanism, which can be moved up and down. This allows the height of the two support plates to be adjusted at the same time. In addition, the locking mechanism is located on the crossbeam, so the crossbeam can be raised and lowered while the locking mechanism is being operated, which facilitates the adjustment of the support components.

[0007] The locking mechanism includes a sliding member, an elastic member, an operating handle, and a locking pin. A groove is provided on the crossbeam, and the sliding member is movably disposed within the groove between a locked position and a released position. The locking pin is fixedly disposed on the sliding member, and the operating handle is fixedly disposed on the sliding member and extends to the outside of the crossbeam. When the sliding member is in the locked position, the locking pin is inserted into the locking hole to restrict the vertical movement of the crossbeam. When the sliding member is in the released position, the locking pin disengages from the locking hole, allowing the crossbeam to move vertically. The elastic member drives the sliding member to the locked position. When the height of the support assembly needs to be adjusted, the sliding member can be moved to the released position by turning the operating handle. Then, the crossbeam is moved to the target height, and the operating handle is released, causing the sliding member to move to the locked position under the drive of the elastic member, allowing the locking pin to insert into the locking hole to restrict the vertical movement of the crossbeam, thus completing the adjusted positioning. The operation is convenient.

[0008] The crossbeam is provided with a constricted groove that slides with the slide rail. The slide rail is fitted into the constricted groove. The movement of the crossbeam up and down is smoother and more stable through the cooperation between the constricted groove and the slide rail.

[0009] The crossbeam is provided with a cover plate that closes the slide groove. The crossbeam is provided with a groove. The cover plate extends to the inside of the groove opening to form the constriction groove. The cover plate can both realize the stable installation of the sliding part and form the constriction groove, thereby reducing product cost and assembly cost.

[0010] The slide rail includes two side plates and two protruding strips. The side plates are arranged in parallel and extend vertically. The two protruding strips are respectively located on the outer side of the side plates and extend vertically. The protruding strips are located in the constriction groove and are blocked by the cover plate to restrict the slide rail from leaving the constriction groove. The slide rail is formed by the side plates and the protruding strips, which can reduce the cost of the slide rail and ensure the strength of the slide rail.

[0011] The locking hole is formed on the side plate, making the structure more reasonable and compact.

[0012] The crossbeam is provided with two locking mechanisms, and each of the two side plates has a plurality of locking holes arranged at intervals along its length. The locking pins of the two locking mechanisms respectively cooperate with the locking holes of the two side plates. This can both ensure the stability of the crossbeam after adjustment and facilitate operation and adjustment. The crossbeam can be adjusted by operating the two locking mechanisms with both hands at the same time and moving the crossbeam simultaneously.

[0013] The device includes two operating handles, which are respectively connected to the upper and lower sides of the sliding member and extend to the upper and lower sides of the crossbeam. Each operating handle includes an extension section that extends laterally to the end of the crossbeam. The outer end of the extension section has a protruding blocking part. Since the extension section is located at the end of the crossbeam, it is convenient to operate the operating handle and to adjust the crossbeam by raising and lowering.

[0014] This utility model includes two support components distributed vertically, which can provide more complete support for the waist and back of the human body and are more ergonomic.

[0015] The operating handle is located at the end of the crossbeam. This structure facilitates the operation of the operating handle and the simultaneous raising and lowering of the crossbeam. Attached Figure Description

[0016] The present invention will now be described in further detail with reference to the accompanying drawings.

[0017] Figure 1 This is a perspective view of the present invention.

[0018] Figure 2 This is a side view of the present invention.

[0019] Figure 3 This is a front view of the present invention.

[0020] Figure 4 for Figure 3 A sectional view along the AA direction.

[0021] Figure 5 for Figure 3 BB-direction sectional view.

[0022] Figure 6 This is an exploded view of the components of this utility model.

[0023] Figure 7 This is an exploded view of the components from another perspective of the present invention.

[0024] Figure 8 This is a schematic diagram of the connection structure between the back panel and the crossbeam. Detailed Implementation

[0025] Reference Figures 1 to 8 As shown, a lumbar support includes a back panel 1 and two support components 2. The two support components 2 are distributed vertically on the front of the back panel 1. Each support component 2 includes a crossbeam 21 and two support plates 22. The two support plates 22 are symmetrically arranged at both ends of the crossbeam 21 by springs 23. The upper support component 2 is mainly used to support the back of the human body, and the lower support component 2 is mainly used to support the waist of the human body. Therefore, the shape of the support plate 22 of the upper support component 2 is more adapted to the back of the human body, and the shape of the support plate 22 of the lower support component 2 is more adapted to the waist of the human body. The height of both support components 2 can be adjusted independently, which is more ergonomic and adaptable to different people.

[0026] The height adjustment of the support component 2 is achieved through the following structure: the crossbeam 21 is adjustablely mounted on the back plate 1, and the front of the back plate 1 is provided with a slide rail 3 extending vertically. The crossbeam 21 slides with the slide rail 3. The crossbeam 21 is provided with two symmetrical locking mechanisms 4. The slide rail 3 includes two side plates 31 and two protrusions 32. The side plates 21 are arranged in parallel and extend vertically. The two protrusions 32 are respectively located on the outer side of the side plates 31 and extend vertically. The crossbeam 21 is provided with a constriction groove 211 that slides with the slide rail 3. The slide rail 3 is adapted to be installed in the constriction groove 211.

[0027] Both side plates 31 have multiple locking holes 311 spaced apart along their length. The locking mechanism 4 includes a sliding member 41, a spring 44, an operating handle 43, and a locking pin 42. The crossbeam 21 is provided with a slide groove 212. The sliding member 41 is movably disposed in the slide groove 212 between a locked position and a released position. The locking pin 42 is fixedly disposed on the sliding member 41. The operating handle 43 is fixedly disposed on the sliding member 41 and extends to the outside of the crossbeam 21. When the sliding member 41 is in the locked position, the locking pin 42 is inserted into the locking hole 311 to restrict the crossbeam 21 from moving up and down. When the slider 41 is in the release position, the locking pin 42 disengages from the locking hole 311, allowing the crossbeam 21 to move up and down. The spring 44 drives the slider 41 to the locking position. When it is necessary to adjust the height of the support assembly 2, the slider 41 can be moved to the release position by turning the operating handle 43. Then, the crossbeam 21 is moved to the target height, and the operating handle 43 is released to allow the slider 41 to move to the locking position under the drive of the spring 44. This allows the locking pin 42 to be inserted into the locking hole 311 to restrict the up and down movement of the crossbeam 21, thereby completing the adjusted positioning. The operation is convenient.

[0028] The locking mechanism 4 includes two operating handles 43, which are respectively connected to the upper and lower sides of the sliding member 41 and extend to the upper and lower sides of the crossbeam 21. The operating handle 43 includes an extension section 431 that extends laterally to the end of the crossbeam 21. A protruding blocking part 432 is formed at the outer end of the extension section 431. Since the extension section 431 is located at the end of the crossbeam 21, it is convenient to operate the operating handle 43 and to adjust the crossbeam 21 by raising and lowering.

[0029] A cover plate 45 with a closed slide groove 212 is provided on the crossbeam 21. A groove is provided on the crossbeam 21. The cover plate 45 extends to the inside of the groove opening to form a constriction groove 212. The protrusion 32 is located in the constriction groove 212 and is blocked by the cover plate 45 to restrict the slide rail 3 from leaving the constriction groove 212. The slide rail 3 is formed by the side plate 31 and the protrusion 32, which can reduce the cost of the slide rail 3 and ensure the strength of the slide rail 3. The cover plate 45 can not only realize the stable installation of the sliding part 41, but also form the constriction groove 212, thereby reducing product cost and assembly cost.

[0030] In the above scheme, two support plates 22 for supporting the human waist and back are symmetrically arranged on the crossbeam 21. The crossbeam 21 is connected to the back plate 1 through the slide rail 3 and the locking mechanism 4, which can move up and down. This allows the height of the two support plates 22 to be adjusted at the same time. In addition, the locking mechanism 4 is arranged on the crossbeam 21, so the crossbeam 21 can be raised and lowered while the locking mechanism 3 is operated, which facilitates the adjustment of the support component 2.

[0031] The above description is merely a preferred embodiment of the present utility model, and therefore cannot be construed as limiting the scope of the present utility model. All equivalent changes and modifications made in accordance with the scope of the patent application and the contents of the specification of the present utility model shall still fall within the scope of the patent of the present utility model.

Claims

1. A lumbar support, comprising a back panel and at least one set of support components disposed on the back panel, characterized in that: The support assembly includes a crossbeam and two support plates. The two support plates are symmetrically arranged on the crossbeam via elastic components. The crossbeam is adjustablely mounted on the back plate. The front of the back plate is provided with vertically extending slide rails. The crossbeam slides in conjunction with the slide rails. A locking mechanism is provided on the crossbeam. Multiple locking holes are spaced apart along the length of the slide rails. The locking mechanism includes locking pins that can be inserted into or disengaged from the locking holes. When the locking pins are inserted into the locking holes, the vertical movement of the crossbeam is restricted. When the locking pins are disengaged from the locking holes, the crossbeam can move vertically.

2. A lumbar support according to claim 1, characterized in that: The locking mechanism includes a slider, an elastic element, an operating handle, and a locking pin. A groove is provided on the crossbeam. The slider is movably disposed in the groove between a locked position and a released position. The locking pin is fixedly disposed on the slider. The operating handle is fixedly disposed on the slider and extends to the outside of the crossbeam. When the slider is in the locked position, the locking pin is inserted into the locking hole to restrict the crossbeam from moving up and down. When the slider is in the released position, the locking pin disengages from the locking hole, allowing the crossbeam to move up and down. The elastic element is used to drive the slider to move to the locked position.

3. A lumbar support according to claim 2, characterized in that: The crossbeam is provided with a constricted groove that slides with the slide rail, and the slide rail is adapted to be installed in the constricted groove.

4. A lumbar support according to claim 3, characterized in that: The crossbeam is provided with a cover plate that closes the slide groove, and the crossbeam is provided with a groove. The cover plate extends to the inside of the groove opening to form the constriction groove.

5. A lumbar support according to claim 4, characterized in that: The slide rail includes two side plates and two protruding strips. The side plates are arranged in parallel and extend vertically. The two protruding strips are respectively located on the outer side of the side plates and extend vertically. The protruding strips are located in the constricted groove and are blocked by the cover plate to prevent the slide rail from leaving the constricted groove.

6. A lumbar support according to claim 5, characterized in that: The locking hole is formed on the side plate.

7. A lumbar support according to claim 6, characterized in that: The crossbeam is provided with two locking mechanisms, and each of the two side plates has a plurality of locking holes arranged at intervals along its length. The locking pins of the two locking mechanisms respectively cooperate with the locking holes of the two side plates.

8. A lumbar support according to any one of claims 2 to 7, characterized in that: The device includes two operating handles, which are respectively connected to the upper and lower sides of the slider and extend to the upper and lower sides of the crossbeam. Each operating handle includes an extension section that extends laterally to the end of the crossbeam, and a protruding blocking portion is formed at the outer end of the extension section.

9. A lumbar support according to any one of claims 1 to 7, characterized in that: It includes two support components distributed vertically.

10. A lumbar support according to any one of claims 2 to 7, characterized in that: The operating handle is located at the end of the crossbeam.

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