Backrest shoulder electric adjustment device and backrest frame including the same

Abstract

The present invention provides an electric adjustment device for the shoulder of a backrest, which belongs to the technical field of backrest devices. The electric adjustment device for the shoulder of a backrest includes a motor, a large tooth plate, a large tooth plate connecting bracket, a small tooth plate 1 and a small tooth plate 2; the motor is arranged on the lower side beam of the backrest, and the motor is meshed with the large tooth plate for transmission; the top end of the large tooth plate connecting bracket is rotatably connected to the top end of the lower side beam, and the bottom end of the large tooth plate connecting bracket is fixedly connected with the large tooth plate; the top end of the small tooth plate 1 is rotatably connected to the top end of the lower side beam, and the bottom end of the small tooth plate 1 is connected to the end of the large tooth plate connecting bracket with a protrusion; the top end of the small tooth plate 2 is fixedly connected to the bottom end of the upper side beam of the backrest, and the bottom end of the small tooth plate 2 is meshed with the small tooth plate 1. The electric adjustment device for the shoulder of a backrest provided by the present invention can effectively reduce the noise problem caused by the operation of the motor, can effectively save the layout space, is conducive to the layout of other mechanisms, and the comfort is significantly improved year-on-year.

Description

Technical Field

[0001] The invention relates to the technical field of backrest devices, and in particular to an electric adjustment device for the shoulder of a backrest and a backrest frame comprising the same. Background Art

[0002] With the development of the automobile industry, car seats can achieve more and more functions. The car seat back design is aimed at supporting the shoulders and waist. In order to improve comfort and meet the comfort needs of passengers of different body shapes and sizes, in addition to the adjustable seat back angle, some seats also add the seat back neck and shoulder angle adjustment function. Traditional adjustable shoulder backrests with ABTS are mostly achieved by adding a set of motors and bracket mechanisms on the upper part of the backrest, such as the seat shoulder adjustment mechanism and the car seat including the same disclosed in Chinese Patent Application No. 201620935476.9; the bracket mechanism rotates, the main frame of the backrest does not move, the backrest structure is heavy and the styling style is limited; similar to the overall angle adjustment of the backrest, the angle adjustment of the shoulder of the backrest is also achieved by a recliner, such as the electric shoulder adjustment mechanism with ABTS disclosed in Chinese Patent Application No. 201921402473.9, although it relies on a backrest recliner and a synchronous shaft to achieve backrest adjustment, the comfort of the shoulder is affected by the arrangement of the synchronous rods in its frame; the backrest adjustment motors of the above two frames are placed at the upper end of the backrest, which are relatively close to the upper body of the person and are prone to noise. Summary of the invention

[0003] In view of this, in order to solve the technical problems in the prior art that the structural layout affects the comfort and the noise caused by the motor being arranged at the upper end of the backrest, one of the objects of the present invention is to provide an electric adjustment device for the shoulders of the backrest, which can effectively reduce the noise problem caused by the operation of the motor, can effectively save layout space, is conducive to the layout of other mechanisms, and the comfort is significantly improved year-on-year.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] An electric adjustment device for the shoulder part of a backrest comprises a motor, a large tooth plate, a large tooth plate connecting bracket, a small tooth plate 1 and a small tooth plate 2;

[0006] The motor is arranged on the lower side beam of the backrest, and the motor is meshed with the large tooth plate for transmission;

[0007] The top end of the large tooth plate connecting bracket is rotatably connected to the top end of the lower side beam, and the bottom end of the large tooth plate connecting bracket is fixedly connected to the large tooth plate;

[0008] The top end of the small tooth plate 1 is rotatably connected to the top end of the lower side beam, and the bottom end of the small tooth plate 1 is connected to the end of the large tooth plate connecting bracket with a protrusion;

[0009] The top end of the small tooth plate 2 is fixedly connected to the bottom end of the upper side beam of the backrest, and the bottom end of the small tooth plate 2 is meshed with the small tooth plate 1.

[0010] Preferably, a waist-shaped hole is further provided at the bottom end of the large tooth plate connecting bracket, and a limiting plug arranged on the lower section side beam is provided in the waist-shaped hole.

[0011] Preferably, the large tooth plate connecting bracket is rotatably connected by a metal bushing, a matching sleeve and a connecting plug which are arranged in sequence.

[0012] Preferably, the small tooth plate 1 is rotatably connected through a metal bushing 2, a matching sleeve 2 and a connecting plug 2 which are arranged in sequence.

[0013] Preferably, the bottom end of the small tooth plate 1 is connected to the tooth plate bushing via a connecting rivet.

[0014] Preferably, the large tooth plate and the large tooth plate connecting bracket are fixedly connected by fixing rivets.

[0015] Preferably, the top end of the small tooth plate 2 is fixedly connected to the bottom end of the upper side beam.

[0016] Preferably, the motor is connected to the lower side beam by bolts.

[0017] The second object of the present invention is to provide a backrest frame including the above-mentioned electric adjustment device for the shoulder part of the backrest, whose comfort is significantly improved year-on-year.

[0018] Preferably, it comprises an upper section welding assembly and a lower section welding assembly;

[0019] The upper section welding assembly comprises an upper connecting plate, an upper section left beam, a lower connecting plate, and an upper section right beam which are connected in sequence, the upper connecting plate is provided with a fixing bracket with a safety belt outlet, the lower connecting plate is provided with a retractor, and the upper section left beam and the upper section right beam are buckled with a first reinforcing plate and a second reinforcing plate respectively;

[0020] The lower section welding assembly comprises a lower section left beam, a connecting pipe and a lower section right beam which are connected in sequence, and a reinforcement plate three and a reinforcement plate four are buckled on the lower section left beam and the lower section right beam respectively;

[0021] The upper welding assembly is rotatably connected to the lower welding assembly;

[0022] The electric adjustment device for the shoulder portion of the backrest is arranged at at least one end of the connection between the upper welding assembly and the lower welding assembly.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. Compared with the existing electric shoulder adjustment mechanism for the backrest with segmented portions, the electric shoulder adjustment device for the backrest provided by the present invention arranges the motor at the lower section of the backrest, which can effectively reduce the noise problem caused by the operation of the motor.

[0025] 2. The present invention arranges the motor at the lower section of the backrest, and the electric adjustment device of the shoulder of the backrest is arranged on the inner side of the side beam. Analogous to the existing segmented adjustment mechanism of the backrest, it can effectively save layout space, is conducive to the arrangement of other mechanisms, and the comfort is significantly improved year-on-year.

[0026] 3. The comfort of the backrest frame provided by the present invention is significantly improved year-on-year. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the structure of the electric adjustment device for the shoulder part of the backrest provided by the present invention;

[0028] Figure 2 A side view of the electric shoulder adjustment device of the backrest provided by the present invention installed on the backrest frame;

[0029] Figure 3 A schematic diagram of the structure of the backrest frame provided by the present invention;

[0030] Figure 4 This is a schematic diagram of the welding assembly structure of the upper section of the backrest;

[0031] Figure 5 It is a schematic diagram of the installation of the upper backrest welding assembly and the electric adjustment device of the backrest shoulder;

[0032] Figure 6 This is a schematic diagram of the welding assembly of the lower section of the backrest;

[0033] Figure 7 It is a schematic diagram of the assembly of the electric adjustment device of the backrest shoulder and the backrest frame;

[0034] In the figure, 1. upper connecting plate, 2. safety belt outlet, 3. fixing bracket, 4a. reinforcing plate 1, 4b. reinforcing plate 2, 5a. upper right beam, 5b. upper left beam, 6. lower connecting plate, 7. retractor, 8. retractor mounting nut, 9. welding nut, 10. mounting bolt, 11. mounting gasket, 12a. reinforcing plate 3, 12b. reinforcing plate 4, 13a. lower right beam, 13b. lower left beam, 14. motor, 15. motor mounting bolt, 16 .Motor mounting nut, 17.Connecting pipe, 18a.Connecting plug 1, 18b.Matching sleeve 1, 18c.Metal bushing 1, 19a.Connecting plug 2, 19b.Matching sleeve 2, 19c.Metal bushing 2, 20.Small tooth plate 1, 21a.Connecting rivet, 21b.Tooth plate bushing, 22.Large tooth plate connecting bracket, 23.Limiting plug, 24.Fixing rivet, 25.Large tooth plate, 26.Small tooth plate 2, 27.Retractor mounting bolt, 28.Locking card. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention.

[0036] like Figure 1-2 As shown, the present invention provides an electric adjustment device for the shoulder part of a backrest, comprising a motor 14, a large tooth plate 25, a large tooth plate connecting bracket 22, a small tooth plate 1 20 and a small tooth plate 26;

[0037] The motor 14 is arranged on the lower side beam of the backrest, and the motor 14 is meshed with the large tooth plate 25 for transmission;

[0038] The top end of the large tooth plate connecting bracket 22 is rotatably connected to the top end of the lower side beam, and the bottom end of the large tooth plate connecting bracket 22 is fixedly connected to the large tooth plate 25;

[0039] The top end of the small tooth plate 20 is rotatably connected to the top end of the lower side beam, and the bottom end of the small tooth plate 20 is connected to the protruding end of the large tooth plate connecting bracket 22;

[0040] The top end of the small tooth plate 26 is fixedly connected to the bottom end of the upper side beam of the backrest, and the bottom end of the small tooth plate 26 is meshed with the small tooth plate 1 20 .

[0041] In the above structure of the present invention, the motor 14 is engaged with the large tooth plate 25 to drive the large tooth plate 25 to rotate, so that the large tooth plate connecting bracket 22 drives the small tooth plate 1 20 and the small tooth plate 2 26 to engage and transmit, thereby adjusting the shoulder.

[0042] In the above structure of the present invention, a locking card 28 is also provided. The locking card 28 is riveted and is respectively arranged on the outer plugs of the large tooth plate connecting bracket 22 and the metal bushing 18c and the small tooth plate 20 and the metal bushing 2 19c on the side with the adjustment device; the side without the adjustment device does not need to be locked.

[0043] In the present invention, a waist-shaped hole is further provided at the bottom end of the large tooth plate connecting bracket 22, and a limiting plug 23 is arranged on the lower side beam in the waist-shaped hole to achieve the limiting effect on the large tooth plate connecting bracket 22 and the limiting of the shoulder adjustment.

[0044] In the present invention, the large tooth plate connecting bracket 22 is rotatably connected by a metal bushing 18c, a matching sleeve 18b and a connecting plug 18a which are arranged in sequence.

[0045] In the present invention, the small tooth plate 20 is rotatably connected through a metal bushing 19c, a matching sleeve 19b and a connecting plug 19a which are arranged in sequence.

[0046] In the present invention, the bottom end of the small tooth plate 20 is connected to the tooth plate bushing 21b via a connecting rivet 21a.

[0047] In the present invention, the large tooth plate 25 and the large tooth plate connecting bracket 22 are fixedly connected by fixing rivets 24 .

[0048] In the present invention, the top end of the small tooth plate 26 is fixedly connected to the bottom end of the upper side beam, and the fixed connection can be achieved by welding or fixing rivets, and those skilled in the art can make a choice according to actual needs.

[0049] In the present invention, the motor 14 is connected to the lower side beam by bolts. Preferably, the upper end of the motor 14 is connected to the lower side beam by a motor mounting bolt 15 , and the lower end of the motor 14 is mounted by a motor mounting nut 16 .

[0050] The present invention also provides a backrest frame including the above-mentioned backrest shoulder electric adjustment device, including an upper welding assembly and a lower welding assembly;

[0051] The upper section welding assembly comprises an upper connecting plate 1, an upper section left beam 5b, a lower connecting plate 6, and an upper section right beam 5a which are connected in sequence. The upper connecting plate 1 is provided with a fixing bracket 3 with a safety belt outlet 2, and the lower connecting plate 4 is provided with a retractor 7. The upper section left beam 5b and the upper section right beam 5a are buckled with a reinforcing plate 1 4a and a reinforcing plate 2 4b respectively.

[0052] The lower section welding assembly comprises a lower section left beam 13b, a connecting pipe 17 and a lower section right beam 13a which are connected in sequence, and a reinforcing plate 3 12a and a reinforcing plate 4 12b are buckled on the lower section left beam 13b and the lower section right beam 13a respectively;

[0053] The upper welding assembly is rotatably connected to the lower welding assembly;

[0054] The electric adjustment device for the shoulder portion of the backrest is arranged at at least one end of the connection between the upper welding assembly and the lower welding assembly.

[0055] In the above-mentioned backrest frame provided by the present invention, the retractor 7 is installed on the lower connecting plate 6 through the retractor mounting nut 8 and the retractor mounting bolt 27, the upper welding assembly and the lower welding assembly are rotatably connected through the welding nut 9 and the mounting bolt 10, the upper welding assembly is inserted into the lower assembly, the number of welding nuts 9 and mounting bolts 10 on the left beam and the right beam are two each, and a corresponding number of gaskets 11 are configured.

[0056] In the present invention, the connection relationship between the components not mentioned will not be described in detail here, and the conventional connection methods in the art can be selected, such as bolt connection, riveting and other connection relationships.

[0057] In the present invention, the electric adjustment device for the shoulder portion of the backrest is at least arranged at at least one end of the connection between the upper welding assembly and the lower welding assembly, and the electric adjustment device for the shoulder portion of the backrest can also be arranged at both left and right ends.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An electric adjustment device for the shoulder part of a backrest, characterized in that: It includes a motor, a large tooth plate, a large tooth plate connecting bracket, a small tooth plate 1 and a small tooth plate 2; The motor is arranged on the lower side beam of the backrest, and the motor is meshed with the large tooth plate for transmission; The top end of the large tooth plate connecting bracket is rotatably connected to the top end of the lower side beam, and the bottom end of the large tooth plate connecting bracket is fixedly connected to the large tooth plate; The top end of the small tooth plate 1 is rotatably connected to the top end of the lower side beam, and the bottom end of the small tooth plate 1 is connected to the end of the large tooth plate connecting bracket with a protrusion; The top end of the small tooth plate 2 is fixedly connected to the bottom end of the upper side beam of the backrest, and the bottom end of the small tooth plate 2 is meshed with the small tooth plate 1; The bottom end of the large tooth plate connecting bracket is also provided with a waist-shaped hole, and the waist-shaped hole has a limiting plug arranged on the lower section side beam; The large tooth plate connecting bracket is rotatably connected through a metal bushing 1, a matching sleeve 1 and a connecting plug 1 which are arranged in sequence.

2. The electric adjustment device for the shoulder part of the backrest according to claim 1, characterized in that: The small tooth plate 1 is rotatably connected through a metal bushing 2, a matching sleeve 2 and a connecting plug 2 which are arranged in sequence.

3. The electric adjustment device for the shoulder part of the backrest according to claim 1, characterized in that: The bottom end of the small tooth plate 1 is connected to the tooth plate bushing through a connecting rivet.

4. The electric adjustment device for the shoulder part of the backrest according to claim 1, characterized in that: The large tooth plate and the large tooth plate connecting bracket are fixedly connected by fixing rivets.

5. The electric adjustment device for the shoulder part of the backrest according to claim 1, characterized in that: The top end of the small tooth plate 2 is fixedly connected to the bottom end of the upper side beam.

6. The electric adjustment device for the shoulder part of the backrest according to claim 1, characterized in that: The motor is connected to the lower side beam by bolts.

7. A backrest frame, characterized in that: The invention comprises the electric adjustment device for the shoulder part of the backrest according to any one of claims 1 to 6.

8. A backrest frame according to claim 7, characterized in that: It includes an upper section welding assembly and a lower section welding assembly; The upper section welding assembly comprises an upper connecting plate, an upper section left beam, a lower connecting plate, and an upper section right beam which are connected in sequence, the upper connecting plate is provided with a fixing bracket with a safety belt outlet, the lower connecting plate is provided with a retractor, and the upper section left beam and the upper section right beam are buckled with a first reinforcing plate and a second reinforcing plate respectively; The lower section welding assembly comprises a lower section left beam, a connecting pipe and a lower section right beam which are connected in sequence, and a reinforcement plate three and a reinforcement plate four are buckled on the lower section left beam and the lower section right beam respectively; The upper welding assembly is rotatably connected to the lower welding assembly; The electric adjustment device for the shoulder portion of the backrest is arranged at at least one end of the connection between the upper welding assembly and the lower welding assembly.

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