Device for adjusting radian of waist rest

Abstract

The utility model provides a device for adjusting the radian of a waist rest, which comprises a back support, a waist bearing piece and two armrest frames, the two armrest frames are arranged on the back support in a bilateral symmetry mode, and the waist bearing piece is arranged on the back support and located between the two armrest frames; ejector rods are arranged on the two armrest frames, and the two ejector rods are located on the sides of the two ends of the waist bearing piece respectively; the ejector rod is configured to move towards the waist bearing piece and push the waist bearing piece to reduce the radian or move away from the waist bearing piece to increase the radian of the waist bearing piece. Compared with the prior art, the radian of the waist bearing piece is adjusted through movement of the ejector rod so as to adapt to people of different body types; when the radian of the waist supporting piece is adjusted to be matched with the waist size of the user, the waist supporting piece can more effectively support the user, and therefore fatigue caused by sedentariness and damage to the lumbar vertebra are relieved.

Description

Technical Field

[0001] The utility model relates to the field of furniture, in particular to a device for adjusting the curvature of a waist support. Background Art

[0002] In modern furniture, there are many adjustable moving parts to achieve different functions, and these parts often achieve motion adjustment through mechanical motion mechanisms, such as lifting mechanisms, rotating mechanisms, etc.; these adjustment mechanisms can be applied to different furniture parts to adjust these furniture parts to make them produce corresponding functions and achieve preset effects.

[0003] Taking chairs as an example, in order to relieve the fatigue caused by sitting for a long time and the damage to the lumbar spine, the chairs need to provide effective support for the human waist. Taking into account the different body shapes of different users, a fixed lumbar support cannot be suitable for all people. This requires the lumbar support to have the function of adjusting the curvature, that is, adjustable moving parts are needed to drive the change of the curvature of the lumbar support. Summary of the invention

[0004] In order to solve the above technical problems, the utility model provides a device for adjusting the curvature of the lumbar support, comprising a back support, a lumbar support member and two armrest frames, wherein the lumbar support member is arranged between the two armrest frames, and a push rod is arranged on the armrest frame, and the push rod can move toward or away from the lumbar support member. When the push rod moves, the curvature of the lumbar support member can change accordingly, thereby adapting to the waist size of the human body to provide more effective support.

[0005] The technical solution of the utility model is achieved in this way:

[0006] A device for adjusting the curvature of a lumbar support comprises a back support, a lumbar support member and two armrests, wherein the two armrests are symmetrically arranged on the back support, and the lumbar support member is arranged on the back support and between the two armrests; both armrests are provided with push rods, which are respectively located on the sides of the two end portions of the lumbar support member; the push rods are configured to be able to move toward the lumbar support member and push the lumbar support member to reduce the curvature or move away from the lumbar support member to increase the curvature of the lumbar support member.

[0007] The curvature of the waist support member is adjusted by moving the top rod to adapt to people of different body shapes; when the curvature of the waist support member is adjusted to adapt to the waist size of the user, the waist support member can provide more effective support to the user, thereby alleviating fatigue caused by sitting for a long time and damage to the lumbar spine.

[0008] Preferably, the waist support is elastic, the push rod protrudes from the armrest toward the waist support, and the waist support abuts against the push rod; when the push rod moves toward the waist support, the push rod pushes the waist support to deform so that the two ends of the waist support are close to each other to clamp the waist of the human body; when the push rod moves away from the waist support, the waist support recovers its deformation, and the two ends of the waist support move away from each other. The elastic waist support can be deformed under the action of the push rod, thereby directly changing its curvature, which is simpler and more convenient.

[0009] Preferably, a mounting seat is provided on the armrest frame, and a push rod is inserted into the mounting seat; the push rod is hollow, and a screw is inserted into the push rod, and the screw is threadedly connected to the push rod, and the screw is configured to rotate to drive the push rod to move. When the screw is rotated and the displacement of the screw relative to the mounting seat is limited, the push rod threadedly connected to the screw will move relative to the mounting seat, thereby realizing the adjustment of the waist support member by the push rod.

[0010] Preferably, a mounting hole is provided on the side of the mounting seat facing the lumbar support, and an avoidance hole is provided on the side of the mounting seat away from the lumbar support; the push rod is inserted in the mounting hole and protrudes from the mounting seat from the mounting hole, and the screw rod is inserted in the avoidance hole and protrudes from the mounting seat from the avoidance hole.

[0011] Preferably, the size of the mounting hole is larger than that of the avoidance hole. Since the avoidance hole is smaller than the mounting hole, that is, smaller than the push rod, when the push rod moves to the farthest distance from the waist support, the push rod will abut against the mounting seat around the avoidance hole.

[0012] Preferably, a knob is provided on the screw rod, and the screw rod protrudes from the mounting seat at a side away from the waist support member and is connected to the knob. The user can control the rotation of the screw rod by rotating the knob, thereby controlling the movement of the push rod.

[0013] The design starting point, concept and beneficial effects of the utility model using the above technical solution are:

[0014] The curvature of the waist support member is adjusted by moving the top rod to adapt to people of different body shapes; when the curvature of the waist support member is adjusted to adapt to the waist size of the user, the waist support member can provide more effective support to the user, thereby alleviating fatigue caused by sitting for a long time and damage to the lumbar spine. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the device in the embodiment of the utility model, in which the push rod protrudes from the mounting seat;

[0016] Figure 2 This is a top view of the device in the embodiment of the utility model, in which the push rod protrudes from the mounting seat;

[0017] Figure 3It is a schematic diagram of the three-dimensional structure after the push rod in the embodiment of the utility model moves toward the waist support part;

[0018] Figure 4 It is a top view of the embodiment of the utility model after the push rod moves toward the waist support part;

[0019] Figure 5 This is a schematic diagram of the three-dimensional structure of the screw and the knob in the embodiment of the utility model;

[0020] Figure 6 It is a three-dimensional structural schematic diagram of the top rod in the embodiment of the utility model;

[0021] Figure 7 It is a schematic diagram of the three-dimensional structure of the mounting base in the embodiment of the utility model.

[0022] The reference numerals of the figures are: back support 1; handrail support 2; top rod 3; mounting area 4; mounting seat 5; inner end plate 51; outer end plate 52; mounting hole 6; avoidance hole 7; knob 8; screw rod 9. DETAILED DESCRIPTION

[0023] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0025] In the description of the present invention, the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0026] The specific implementation of the utility model is as follows:

[0027] like Figure 1-4 As shown, the utility model provides a device for adjusting the curvature of the lumbar support, comprising a back support 1, a lumbar support member (not shown) and two armrest frames 2, the two armrest frames 2 are symmetrically arranged on the back support 1, the lumbar support member is arranged on the back support 1 and is located between the two armrest frames 2; both armrest frames 2 are provided with a push rod 3, and the two push rods 3 are respectively located on the sides of the two end portions of the lumbar support member; the push rod 3 is configured to be able to move toward the lumbar support member and push the lumbar support member to reduce the curvature or move away from the lumbar support member to increase the curvature of the lumbar support member.

[0028] The curvature of the waist support member is adjusted by moving the top rod 3 to adapt to people of different body shapes; when the curvature of the waist support member is adjusted to adapt to the waist size of the user, the waist support member can provide more effective support to the user, thereby alleviating fatigue caused by sitting for a long time and damage to the lumbar spine.

[0029] Specifically, if Figure 1 , 3 As shown in Figures 7 and 8, the back support 1 is a frame structure, in the middle of which a mounting area 4 is provided, two handrail frames 2 are provided on the mounting area 4, one ends of the two handrail frames 2 are respectively installed on the left and right edge parts of the mounting area 4, and the handrail frames 2 extend forward and outward; a mounting seat 5 is provided in the middle of the two handrail frames 2, and the mounting seat 5 includes an inner end plate 51 and an outer end plate 52, the inner end plate 51 is on the side facing the waist support member, and the outer end plate 52 is on the side away from the waist support member, the inner end plate 51 is provided with a mounting hole 6, and the outer end plate 52 is provided with an avoidance hole 7; the top rod 3 is inserted in the mounting seat 5, and the top rod 3 is inserted in the mounting hole 6 and protrudes from the mounting seat 5 from the mounting hole 6, the top rod 3 is hollow, and a screw rod 9 is inserted in the top rod 3, and the screw rod 9 and the mounting seat 5 limit the relative displacement; as shown in Figures 7 and 8, the back support 1 is provided with a mounting hole 6, and the top rod 3 is provided with a mounting hole 7, and the top rod 3 ... Figure 5 , 6 As shown, the screw rod 9 has an external thread, and the push rod 3 is provided with an internal thread. The push rod 3 is threadedly connected to the screw rod 9. The push rod 3 can be driven to move by rotating the screw rod 9. The screw rod 9 is rotated and the displacement of the screw rod 9 relative to the mounting seat 5 is limited. Then, the push rod 3 threadedly connected to the screw rod 9 will move relative to the mounting seat 5, thereby realizing the adjustment of the lumbar support by the push rod 3.

[0030] The screw rod 9 is inserted in the avoidance hole 7 and protrudes from the mounting seat 5 from the avoidance hole 7, and a knob 8 is provided on the part of the screw rod 9 protruding from the mounting seat 5; the part of the screw rod 9 protruding from the mounting seat 5 is a hexagonal connecting part, and the knob 8 has a hexagonal hole. After the two are connected, the user can control the rotation of the screw rod 9 by rotating the knob 8, and then control the movement of the push rod 3; the size of the mounting hole 6 is larger than the size of the avoidance hole 7; since the size of the avoidance hole 7 is smaller than the size of the mounting hole 6, that is, smaller than the size of the push rod 3, then when the push rod 3 moves farthest away from the waist support, the push rod 3 will abut against the mounting seat 5 around the avoidance hole 7.

[0031] The waist support is elastic, and the push rod 3 protrudes from the armrest frame 2 toward the waist support, and the waist support is abutted against the push rod 3; when the push rod 3 moves toward the waist support, the push rod 3 pushes the waist support to deform so that the two ends of the waist support are close to each other to clamp the human waist; when the push rod 3 moves away from the waist support, the waist support recovers its deformation, and the two ends of the waist support move away from each other; the elastic waist support can be deformed under the action of the push rod 3, thereby directly changing its curvature, which is simpler and more convenient.

Claims

1. A device for adjusting the curvature of a lumbar support, characterized in that: The invention comprises a back support, a waist support and two armrests, wherein the two armrests are symmetrically arranged on the back support, and the waist support is arranged on the back support and located between the two armrests; both armrests are provided with push rods, which are respectively located on the sides of the two ends of the waist support; the push rods are configured to be able to move toward the waist support and push the waist support to reduce the curvature, or move away from the waist support to increase the curvature of the waist support.

2. The device for adjusting the curvature of the lumbar support according to claim 1, characterized in that: The waist support is elastic, the push rod protrudes from the armrest frame toward the waist support, and the waist support abuts against the push rod; when the push rod moves toward the waist support, the push rod pushes the waist support to deform so that the two ends of the waist support are close to each other to clamp the waist of the human body; when the push rod moves away from the waist support, the waist support recovers its deformation and the two ends of the waist support move away from each other.

3. The device for adjusting the curvature of the lumbar support according to claim 1, characterized in that: A mounting seat is arranged on the handrail frame, and a push rod is inserted in the mounting seat; the push rod is hollow, a screw rod is inserted in the push rod, the screw rod is threadedly connected with the push rod, and the screw rod is configured to rotate to drive the push rod to move.

4. The device for adjusting the curvature of the lumbar support according to claim 3, characterized in that: A mounting hole is provided on one side of the mounting seat facing the waist supporting part, and an avoidance hole is provided on the side of the mounting seat away from the waist supporting part; the push rod is inserted in the mounting hole and protrudes from the mounting seat from the mounting hole, and the screw rod is inserted in the avoidance hole and protrudes from the mounting seat from the avoidance hole.

5. The device for adjusting the curvature of the lumbar support according to claim 4, characterized in that: The size of the mounting hole is larger than the size of the avoidance hole.

6. The device for adjusting the curvature of the lumbar support according to claim 3, characterized in that: A knob is arranged on the screw rod, and the screw rod protrudes from the mounting seat at a side away from the waist supporting component and is connected with the knob.

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