Automobile seat backrest adjusting device

Abstract

The utility model discloses an automobile seat backrest adjusting device which comprises a sliding rail, a base and an upper plate, the upper plate and the base are located on the upper side and the lower side of the sliding rail respectively, a sliding groove is formed in the upper side face of the base, the sliding rail is located in the sliding groove, and U-shaped sliding plates capable of sliding on the sliding rail are symmetrically arranged on the front side face and the rear side face of the sliding groove. The U-shaped sliding plate is made of engineering plastics, and the U-shaped sliding plate is fixedly connected with the inner side face of the sliding groove; the upper plate is provided with a padlock assembly for preventing the U-shaped sliding plate from sliding; the utility model has the advantage of low noise.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile seat backrest adjusting devices and relates to an automobile seat backrest adjusting device. Background Art

[0002] The car seat back adjustment device is a device used to adjust the angle of the car seat back. The car seat back adjustment device allows the driver or passenger to adjust the inclination of the seat back according to their needs to provide a more comfortable and suitable sitting posture.

[0003] The Chinese invention patent with the authorization publication number CN113022392A discloses a car seat back adjustment device, including a guide plate and a lock assembly, the guide plate is provided with a plurality of slots; the lock assembly includes a buckle base, a buckle, a bayonet, an opening lever and an elastic member, three bayonet pins are sequentially arranged on the buckle base and can move axially, the buckle base is slidably arranged on the guide plate, and the opening lever is rotatably connected to the buckle base. This technical solution realizes the adjustment of the backrest position by setting three bayonet pins to cooperate with the slots on the guide plate; however, this technical solution adopts a sliding connection method of a ball and a retaining frame, which has a complex structure and makes noise when used, which may cause discomfort to the user. Utility Model Content

[0004] In view of the above problems, the utility model proposes a car seat back adjustment device, which well solves the problems in the prior art.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: a car seat back adjustment device, comprising a slide rail, a base and an upper plate, wherein the upper plate and the base are respectively located at the upper and lower sides of the slide rail, a slide groove is provided on the upper side of the base, the slide rail is located in the slide groove, and the front and rear sides of the slide groove are symmetrically provided with U-shaped slide plates that can slide on the slide rail, the material of the U-shaped slide plate is engineering plastic, and the U-shaped slide plate is fixedly connected to the inner side of the slide groove;

[0006] The upper plate is provided with a buckle lock assembly which prevents the U-shaped slide plate from sliding.

[0007] Furthermore, the latch assembly includes three limit pins plugged into the upper plate, two springs respectively sleeved on the left and right limit pins, a rotating shaft rotatably connected to the side surface of the upper plate, a torsion spring sleeved on the rotating shaft, a cover plate arranged on the side surface of the upper plate, and a pressure plate arranged in the cover plate, the rear side surface of the cover plate is provided with an opening, the rear end of the pressure plate passes through the opening and is rotatably connected to the rotating shaft, the side surface of the cover plate is provided with three holes for the limit pins to be inserted, the circumferential side surface of the limit pin is provided with an annular protrusion located above the upper plate, the spring is located on the upper side surface of the annular protrusion, and the other end of the spring abuts against the upper plate, the pressure plate is fitted with the lower side surface of the annular protrusion, the two ends of the torsion spring respectively abut against the side surface of the pressure plate and the lower side surface of the opening, and the upper side surface of the slide rail is provided with a plurality of slots for the limit pins to be inserted.

[0008] Furthermore, the front and rear side surfaces at both ends of the slide rail are symmetrically provided with limiting protrusions.

[0009] Furthermore, an inverted U-shaped buckle ring is provided on the upper side of the upper plate.

[0010] Furthermore, arc-shaped slots are symmetrically provided at the front and rear ends of the front and rear side surfaces of the slide slot, and the U-shaped slide plate is provided with an arc-shaped protrusion inserted into the arc-shaped slot.

[0011] Furthermore, the guide track of the slide rail is arc-shaped, and the clamping grooves are evenly arranged along the guide track.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model realizes the movement of the base on the slide rail by using the U-shaped slide plate, reduces the noise when the base moves on the slide rail, improves the comfort of users, and limits the base by using the buckle lock assembly, thereby ensuring the reliability of the seat back adjustment device when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the utility model;

[0015] Figure 2 For this utility model Figure 1 A front view of

[0016] Figure 3 For this utility model Figure 2 A schematic diagram of the structure of the AA part;

[0017] Figure 4 For this utility model Figure 1 A schematic diagram of the buckle lock assembly structure;

[0018] Figure 5 For this utility model Figure 1Schematic diagram of the connection structure of the slide rail, base plate and slide rail.

[0019] In the figure, 1- slide rail; 2- upper plate; 3- base; 4- cover plate; 5- U-shaped slide plate; 6- limit latch; 7- pressure plate; 8- torsion spring; 9- rotating shaft; 10- spring; 11- buckle ring; 101- limit protrusion; 102- slot; 301- arc-shaped slot; 501- arc-shaped protrusion. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1-5 As shown, a car seat back adjustment device comprises a slide rail 1, a base 3 and an upper plate 2, wherein the upper plate 2 and the base 3 are respectively located at the upper and lower sides of the slide rail 1, the base 3 and the upper plate 2 are connected and fixed by bolts, a slide groove is provided on the upper side of the base 3, the slide rail 1 is located in the slide groove, and U-shaped slide plates 5 capable of sliding on the slide rail 1 are symmetrically arranged on the front and rear sides of the slide groove, the material of the U-shaped slide plate 5 is engineering plastic, and the U-shaped slide plate 5 is fixedly connected to the inner side of the slide groove;

[0022] The upper plate 2 is provided with a locking assembly which prevents the U-shaped slide plate 5 from sliding.

[0023] When the car seat back needs to be adjusted, the user releases the limit of the U-shaped slide plate 5 by the lock assembly, and then pushes the base 3, the upper plate 2 and the U-shaped slide plate 5 to slide on the slide rail 1, thereby adjusting the position of the seat back. At the same time, when the U-shaped slide plate 5 slides on the slide rail 1, the material of the engineering plastic causes the noise when the U-shaped slide plate 5 and the slide rail 1 slide. At the same time, the engineering plastic has a certain elasticity, which can effectively eliminate the gap between the base 3 and the slide rail 1, thereby ensuring the silent effect and stability of the base 3, the upper plate 2 and the U-shaped slide plate 5 when sliding, and improving the comfort of the user.

[0024] In this embodiment, the latch assembly includes three limit pins 6 inserted into the upper plate 2, two springs 10 respectively sleeved on the left and right limit pins 6, a rotating shaft 9 hinged on the upper side of the upper plate 2, a torsion spring 8 sleeved on the rotating shaft 9, a cover plate 4 fixed to the upper side of the upper plate 2 by bolts, and a pressure plate 7 arranged in the cover plate 4, an opening is provided on the rear side of the cover plate 4, the rear end of the pressure plate 7 passes through the opening and is hinged on the rotating shaft 9, three holes are provided on the upper side of the cover plate 4 for inserting the limit pins 6, the circumferential side of the limit pin 6 is integrally formed with an annular protrusion located above the upper plate 2, the spring 10 is located on the upper side of the annular protrusion, and the other end of the spring 10 abuts against the upper plate 2, the pressure plate 7 is in contact with the lower side of the annular protrusion, and the two ends of the torsion spring 8 are respectively The upper side of the slide rail 1 is provided with a plurality of slots 102 for inserting the limit pin 6, which are in contact with the upper side of the pressure plate 7 and the lower side of the opening. When the car seat back needs to be adjusted, the user pulls the pressure plate 7 downward, and the rear end of the pressure plate 7 pushes the limit pin 6 to move upward and disengages the limit pin 6 from the slot 102. At this time, the limit pin 6 no longer limits the base 3, and the user can push the base to adjust the position of the car seat back. When the adjustment is completed, the user releases the pressure plate 7, and under the elastic force of the spring 10 and the torsion spring 8, the lower side of the pressure plate 7 is always in contact with the upper side of the upper plate 2, and the limit pin 6 is always inserted in the slot 102, so that the base 3 cannot move, thereby ensuring the reliability of the user when using the car seat back.

[0025] In this embodiment, the front and rear side surfaces at both ends of the slide rail 1 are symmetrically integrally formed with limiting protrusions 101. When in use, the limiting protrusions 101 can limit the sliding of the base 3 and the U-shaped slide 5 to prevent the base 3 from leaving the slide rail, thereby ensuring the reliability of the adjustment device when in use.

[0026] In this embodiment, an inverted U-shaped buckle ring 11 is welded to the upper side of the upper plate 2 .

[0027] In this embodiment, arc-shaped slots are symmetrically provided at the front and rear ends of the front and rear sides of the slide groove, and the U-shaped slide plate 5 is integrally formed with an arc-shaped protrusion inserted into the arc-shaped slot. When installing the U-shaped slide plate 5, the staff inserts the arc-shaped protrusion into the arc-shaped slot, thereby realizing the rapid installation of the U-shaped slide plate 5 and improving the work efficiency of the staff during installation.

[0028] In this embodiment, the guide track of the slide rail 1 is arc-shaped, and the locking grooves 102 are evenly arranged along the guide track.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A car seat back adjustment device, comprising a slide rail, a base and an upper plate, wherein the upper plate and the base are respectively located on the upper and lower sides of the slide rail, and characterized in that: A slide groove is provided on the upper side of the base, the slide rail is located in the slide groove, and U-shaped slide plates that can slide on the slide rail are symmetrically arranged on the front and rear sides of the slide groove, the material of the U-shaped slide plate is engineering plastic, and the U-shaped slide plate is fixedly connected to the inner side of the slide groove; The upper plate is provided with a buckle lock assembly which prevents the U-shaped slide plate from sliding.

2. The vehicle seat back adjustment device according to claim 1, characterized in that: The buckle lock assembly includes three limit pins plugged into the upper plate, two springs respectively sleeved on the left and right limit pins, a rotating shaft rotatably connected to the side surface of the upper plate, a torsion spring sleeved on the rotating shaft, a cover plate arranged on the side surface of the upper plate and a pressure plate arranged in the cover plate, the rear side surface of the cover plate is provided with an opening, the rear end of the pressure plate passes through the opening and is rotatably connected to the rotating shaft, the side surface of the cover plate is provided with three holes for the limit pins to be inserted, the circumferential side surface of the limit pin is provided with an annular protrusion located above the upper plate, the spring is located on the upper side surface of the annular protrusion, and the other end of the spring abuts against the upper plate, the pressure plate is fitted with the lower side surface of the annular protrusion, the two ends of the torsion spring respectively abut against the side surface of the pressure plate and the lower side surface of the opening, and the upper side surface of the slide rail is provided with a plurality of slots for the limit pins to be inserted.

3. The vehicle seat back adjustment device according to claim 1, characterized in that: The front and rear side surfaces of the left and right ends of the slide rail are symmetrically provided with limiting protrusions.

4. The vehicle seat back adjustment device according to claim 1, characterized in that: An inverted U-shaped buckle ring is arranged on the upper side of the upper plate.

5. The vehicle seat back adjustment device according to claim 1, characterized in that: The front and rear ends of the front and rear side surfaces of the slide groove are symmetrically provided with arc-shaped slots, and the U-shaped slide plate is provided with an arc-shaped protrusion inserted into the arc-shaped slots.

6. The vehicle seat back adjustment device according to claim 2, characterized in that: The guide track of the slide rail is arc-shaped, and the clamping grooves are evenly arranged along the guide track.

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