Waist support mechanism of automobile seat

Abstract

The utility model discloses an automobile seat waist support mechanism, and relates to the technical field of waist supports, the automobile seat waist support mechanism comprises a base, the rear side of the base is fixedly provided with a tightening rope through a rivet, the front side of the base is provided with a waist support pad in a bendable manner, the front side of the base is provided with at least four sliding chutes, and each sliding chute is internally provided with a screw rod assembly; the screw rod assembly comprises a screw rod and screw rod sleeves, the screw rod is rotationally arranged in the sliding groove, the screw rod sleeves are arranged on the periphery of the screw rod in a threaded mode, and the inner side of each screw rod sleeve is rotationally connected with the outer side of the waist supporting cushion. The two screws located at the upper position or the lower position are screwed to rotate, after the screws rotate, the screw sleeves can be driven to move to push or pull the ends of the waist supporting cushion to move inwards or outwards to be folded, and therefore the bending angle of the waist supporting cushion can be flexibly changed, flexible adjustment can be conducted according to the waists of different passengers, and the waist supporting cushion is convenient to use. Therefore, the application performance is improved, and convenience is brought to use.

Description

Technical Field

[0001] The utility model relates to the technical field of lumbar supports, in particular to a lumbar support mechanism for a car seat. Background Art

[0002] The car seat lumbar support is mainly used to support the waist of the passenger, making the waist of the passenger comfortable and relieving waist fatigue; it is mainly composed of a lumbar support pad;

[0003] For example, the prior art application number CN201621261623.5 discloses a lumbar support mechanism for a car seat, which comprises a lumbar support body, an ergonomic protrusion, a lumbar support fixing belt, a middle lumbar support pad, a fixing belt connecting buckle, a left lumbar support jacket, a control panel, a power button, a working status indicator light, an adjustment knob, a power cord, and a zipper of a left lumbar support jacket. An ergonomic protrusion is provided on the right side of the lumbar support body, a middle lumbar support pad is provided in the middle of the lumbar support body, a left lumbar support jacket is provided on the left side of the lumbar support body, a power button is provided on the upper part of the control panel, a working status indicator light is provided below the power button, and a power cord is provided at the rear of the control panel;

[0004] It is known through actual use that the above-mentioned prior art can be placed between the inner side of the car backrest and the back of the passenger, and then the waist of the passenger is mainly supported by the lumbar support pad; however, it is found through use that the lumbar support pad is limited in its supporting angle for the waist of the passenger, and long-term use can easily cause discomfort to the waist of the passenger, and it is not easy to adjust according to the waist of most passengers, resulting in low adaptability and inconvenience in use; for this reason, we have improved the above-mentioned solution based on actual usage. Utility Model Content

[0005] The utility model aims to provide a lumbar support mechanism for a car seat, which solves the technical problem that the lumbar support pad in the background technology is limited in the supporting angle of the occupant's waist, which can easily cause discomfort to the occupant's waist after long-term use, and is not easy to adjust according to the waist of most occupants, resulting in low adaptability and inconvenience in use.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lumbar support mechanism for a car seat, comprising a base, a tightening rope is fixedly arranged on the rear side of the base by rivets, a lumbar support pad is bendably arranged on the front side of the base, at least four slide grooves are opened on the front side of the base and a screw assembly is arranged in each of the slide grooves; the screw assembly comprises a screw and a screw sleeve, the screw is rotatably arranged in the slide groove, a screw sleeve is arranged on the outer peripheral thread of the screw and the inner side of each of the screw sleeves is rotatably connected to the outer side of the lumbar support pad.

[0007] Preferably, a groove is provided on the front side of the lumbar support pad, and a through hole is provided in the lumbar support pad, and the sponge board is installed through the groove, and heat and sweat are discharged through the through hole.

[0008] Preferably, the lumbar support pad is a thermoplastic elastomer, and the lumbar support pad can elastically support the occupant.

[0009] Preferably, the bending angle of the lumbar support pad is 30-60°.

[0010] Preferably, each of the side walls of the slide groove is provided with a side groove; a handle is integrally provided on the periphery of the screw rod, and both ends of the screw rod are rotatably arranged with the inner wall of the slide groove through bearings, and sliding rods are integrally provided on both sides of the screw sleeve and both sides of the sliding rods are slidably arranged with the side grooves; the inner side of each of the screw sleeves is rotatably arranged with the side surface of the lumbar support pad through a rivet or a pin rod, and the movement of the screw sleeve drives the sliding rod to slide in the slide groove, so that the rivet or the pin rod drives the lumbar support pad to bend.

[0011] Preferably, a sponge board is provided in the groove by means of glue, and the sponge board can support the spine of the occupant to increase comfort.

[0012] Preferably, a support assembly is arranged between the back side of the lumbar support pad and the front side of the base, and the support assembly includes an outer tube and a connecting rod. The connecting rod is elastically arranged in the outer tube, and one end of the connecting rod extends to the outside of the outer tube and is integrally arranged with the back side of the lumbar support pad. One end of the outer tube is fixed to the front side of the base by a bolt, and the connecting rod can flexibly move in the inner tube to drive the piston to move, so as to adapt to the distance between the back side of the lumbar support pad and the base when the lumbar support pad is bent.

[0013] Preferably, a piston is slidably disposed in the outer cylinder, a spring is welded to one side of the piston, one end of the spring is welded to the inner wall of the opening of the outer cylinder, and movement of the connecting rod causes the spring to generate a force to increase the elasticity of the lumbar support pad.

[0014] Compared with the related art, the automobile seat lumbar support mechanism provided by the utility model has the following beneficial effects:

[0015] 1. The utility model provides a lumbar support mechanism for a car seat. When two screws located at the upper or lower position are turned at the same time, the screws will drive the screw sleeves to move and push the ends of the lumbar support pads to move inward and close. During the process of the lumbar support pads closing inward, the angle of the lumbar support pads will gradually decrease. On the contrary, when the screws are turned in the opposite direction, the screw sleeves will pull the ends of the lumbar support pads to expand, so that the angle of the lumbar support pads will increase, thereby flexibly changing the bending angle of the lumbar support pads, and flexibly adjusting according to the waists of different passengers, thereby increasing the applicability and convenience of use.

[0016] 2. The utility model provides a lumbar support mechanism for a car seat, in which a connecting rod is elastically arranged on the back of the lumbar support pad, which can adapt to lumbar support pads with different curvatures and support lumbar support pads with different curvatures. When the waist of the passenger contacts the lumbar support pad, the elastically arranged connecting rod can elastically support the waist of the passenger, thereby further increasing the comfort and enhancing the firmness of the lumbar support pad. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of a lumbar support pad of the utility model;

[0019] Figure 3 This is a schematic diagram of the screw assembly of the utility model;

[0020] Figure 4 For this utility model Figure 1 The enlarged schematic diagram at a in the middle;

[0021] Figure 5 It is a schematic diagram of the support assembly of the utility model;

[0022] Figure 6 It is a cross-sectional schematic diagram of the support assembly of the utility model.

[0023] In the figure: 1. base; 2. tightening rope; 3. lumbar support pad; 4. slide groove; 5. screw assembly; 51. handle; 52. screw; 53. screw sleeve; 54. slide rod; 6. support assembly; 61. outer cylinder; 62. connecting rod; 63. piston; 64. spring; 7. side groove; 8. through hole; 9. groove; 10. sponge board. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0025] Embodiment 1:

[0026] See also Figure 1 - Figure 6The utility model provides a technical solution: a lumbar support mechanism for a car seat, comprising a base 1, a tightening rope 2 is fixedly arranged on the rear side of the base 1 by rivets, a lumbar support pad 3 is bendably arranged on the front side of the base 1, at least four slide grooves 4 are opened on the front side of the base 1 and a screw assembly 5 is arranged in each slide groove 4; the screw assembly 5 comprises a screw rod 52 and a screw sleeve 53, the screw rod 52 is rotatably arranged in the slide groove 4, a screw sleeve 53 is threadedly arranged on the outer periphery of the screw rod 52 and the inner side of each screw sleeve 53 is rotatably connected with the outer side of the lumbar support pad 3, a groove 9 is arranged on the front side of the lumbar support pad 3, and a through hole 8 is arranged in the lumbar support pad 3. The lumbar support pad 3 is a thermoplastic elastomer, which can be a styrene-based TPE or an olefin-based TPE. The bending angle of the lumbar support pad 3 is 30°, and the bending degree of the lumbar support pad 3 is the smallest. The side wall of each slide groove 4 is provided with a side groove 7; a handle 51 is integrally provided on the periphery of the screw 52, ​​and both ends of the screw 52 are rotatably arranged with the inner wall of the slide groove 4 through bearings, and a slide bar 54 is integrally provided on both sides of the screw sleeve 53, and both sides of the slide bar 54 are slidably arranged with the side groove 7; the inner side of each screw sleeve 53 is rotatably arranged with the side of the lumbar support pad 3 through rivets or pins. A sponge board 10 is arranged in the groove 9 by adhesive.

[0027] Embodiment 2:

[0028] See also Figure 5 and Figure 6 As shown, on the basis of the first embodiment, the utility model provides a technical solution: comprising a base 1, a tightening rope 2 is fixedly arranged on the rear side of the base 1 by rivets, a waist support pad 3 is bendably arranged on the front side of the base 1, at least four slide grooves 4 are opened on the front side of the base 1, and a screw assembly 5 is arranged in each slide groove 4; the screw assembly 5 includes a screw 52 and a screw sleeve 53, the waist support pad 3 is a thermoplastic elastomer, and the bending angle of the waist support pad 3 is 60°, and the bending degree of the waist support pad 3 is the largest;

[0029] A support assembly 6 is arranged between the back of the lumbar support pad 3 and the front side of the base 1. The support assembly 6 includes an outer tube 61 and a connecting rod 62. The connecting rod 62 is elastically arranged in the outer tube 61. One end of the connecting rod 62 extends to the outside of the outer tube 61 and is integrally arranged with the back of the lumbar support pad 3. One end of the outer tube 61 is fixed to the front side of the base 1 by bolts. A piston 63 is slidably arranged in the outer tube 61. A spring 64 is welded to one side of the piston 63. One end of the spring 64 is welded to the inner wall of the opening of the outer tube 61. When the lumbar support pad 3 is pressed against by the passenger, the piston 63 pulls the spring 64 to generate a force; conversely, the spring 64 pulls the connecting rod 62 to return the lumbar support pad 3 to its original position.

[0030] Working principle: First, when using it, the device can be placed between the inner side of the car backrest and the back of the passenger, which can support the waist of the passenger and relieve waist fatigue caused by long-term riding;

[0031] Before use, the tightening rope 2 can be firstly put on the backrest of the car seat, and then the bending angle of the lumbar support pad 3 can be set according to the preference of the passenger;

[0032] When setting, by simultaneously twisting the two screw rods 52 located at the upper or lower position, the screw rods 52 will drive the screw sleeve 53 to move and push the end of the lumbar support pad 3 to move inward and close. During the process of closing the lumbar support pad 3 inward, its angle will gradually decrease. On the contrary, when the screw rod 52 is rotated in the opposite direction, the screw sleeve 53 will pull the end of the lumbar support pad 3 to expand, so that the angle of the lumbar support pad 3 becomes larger, so that the bending angle of the lumbar support pad 3 can be flexibly changed, and it can be flexibly adjusted according to the waist of different passengers, thereby increasing the applicability and convenience of use.

[0033] In addition, a connecting rod 62 is elastically provided on the back of the lumbar support pad 3, which can adapt to lumbar support pads 3 with different curvatures and support lumbar support pads 3 with different curvatures. When the waist of the occupant contacts the lumbar support pad 3, the waist of the occupant can be elastically supported by the elastically provided connecting rod 62, which further increases the comfort while also enhancing the firmness of the lumbar support pad 3.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lumbar support mechanism for a car seat, comprising a base (1), a tightening rope (2) being fixedly provided on the rear side of the base (1) by rivets, characterized in that: The front side of the base (1) is bendably provided with a lumbar support pad (3), the front side of the base (1) is provided with at least four slide grooves (4), and each of the slide grooves (4) is provided with a screw assembly (5); The screw assembly (5) comprises a screw (52) and a screw sleeve (53); the screw (52) is rotatably disposed in the slide groove (4); the screw sleeve (53) is threadedly disposed on the outer periphery of the screw (52); and the inner side of each screw sleeve (53) is rotatably connected to the outer side of the lumbar support pad (3).

2. The automotive seat lumbar support mechanism according to claim 1, characterized in that: A groove (9) is provided on the front side of the lumbar support pad (3), and a through hole (8) is provided inside the lumbar support pad (3).

3. The automotive seat lumbar support mechanism according to claim 1, characterized in that: The lumbar support pad (3) is made of thermoplastic elastomer.

4. The automotive seat lumbar support mechanism according to claim 3, characterized in that: The bending angle of the lumbar support pad (3) is 30-60°.

5. The automotive seat lumbar support mechanism according to claim 1, characterized in that: The side wall of each slide groove (4) is provided with a side groove (7); A handle (51) is integrally provided on the periphery of the screw rod (52), two ends of the screw rod (52) are rotatably arranged via bearings and the inner wall of the slide groove (4), and two sides of the screw rod sleeve (53) are integrally provided with slide rods (54), and both sides of the slide rod (54) are slidably arranged with the side grooves (7); The inner side of each screw sleeve (53) is rotatably arranged with the side surface of the waist support pad (3) via a rivet or a pin.

6. The automotive seat lumbar support mechanism according to claim 2, characterized in that: A sponge plate (10) is arranged in the groove (9) by bonding with glue.

7. The automotive seat lumbar support mechanism according to claim 1, characterized in that: A support assembly (6) is arranged between the back side of the lumbar support pad (3) and the front side of the base (1), and the support assembly (6) comprises an outer tube (61) and a connecting rod (62), wherein the connecting rod (62) is elastically arranged in the outer tube (61), and one end of the connecting rod (62) extends to the outside of the outer tube (61) and is then integrally arranged with the back side of the lumbar support pad (3), and one end of the outer tube (61) is fixed to the front side of the base (1) by means of bolts.

8. The automotive seat lumbar support mechanism according to claim 7, characterized in that: A piston (63) is slidably disposed inside the outer cylinder (61), a spring (64) is welded to one side of the piston (63), and one end of the spring (64) is welded to the inner wall of the opening of the outer cylinder (61).

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