Automobile seat with shoulder adjusting function

Abstract

The utility model relates to an automobile seat with a shoulder adjusting function. The automobile seat comprises a backrest lower frame; the backrest upper frame is rotatably connected to the backrest lower frame; the angle adjuster is arranged at a rotary joint of the backrest upper frame and the backrest lower frame; the driving motor is in driving connection with the angle adjuster, the driving motor can drive the angle adjuster to rotate, and then the angle adjuster drives the backrest upper frame to rotate relative to the backrest lower frame so as to achieve the shoulder adjusting function of the automobile seat. According to the automobile seat, the driving motor and the angle adjuster are arranged to achieve driving of the shoulder adjusting function, the production cost of the automobile seat can be reduced, the locking rigidity of the angle adjuster and the driving motor is high, displacement caused by collision can be reduced, and the safety of the automobile seat is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of car seats, and specifically to a car seat with shoulder adjustment function. Background Technology

[0002] The shoulder adjustment function of a car seat refers to the ability of the upper part of the seat back to rotate and adjust relative to the lower part, thereby providing support for the human shoulder and relieving fatigue during driving or riding.

[0003] The existing shoulder adjustment function of car seats is mainly driven by screw motors set on both sides of the upper frame of the backrest. However, setting screw motors on both sides has the problem of high cost, and the locking stiffness of the screw motors is relatively weak, resulting in large displacement of the upper frame of the backrest during a collision. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a car seat with shoulder adjustment function, which solves the problems of high cost and large displacement caused by collision in the existing car seat shoulder adjustment function.

[0005] The technical solution to achieve the above objectives is:

[0006] This utility model provides a car seat with shoulder adjustment function, including:

[0007] Backrest under frame;

[0008] A backrest upper frame is rotatably connected to the lower backrest frame;

[0009] An angle adjuster is provided at a rotatable connection between the upper backrest frame and the lower backrest frame;

[0010] A drive motor is connected to the adjuster, which drives the adjuster to rotate, thereby causing the upper backrest frame to rotate relative to the lower backrest frame to achieve the shoulder adjustment function of the car seat.

[0011] A further improvement of this utility model of a car seat with shoulder adjustment function is that a pivot is provided at another rotatable connection between the upper backrest frame and the lower backrest frame. The pivot is fixedly connected to the lower backrest frame, and the upper backrest frame can be rotated and adjusted relative to the pivot.

[0012] A further improvement of this utility model of a car seat with shoulder adjustment function is that an eccentric shaft is provided at another rotatable connection between the upper backrest frame and the lower backrest frame.

[0013] A further improvement of this utility model of a car seat with shoulder adjustment function is that the eccentric shaft includes a first shaft segment passing through the lower frame of the backrest, a second shaft segment passing through the upper frame of the backrest, and a third shaft segment connected to the second shaft segment.

[0014] The diameter of the first shaft segment is larger than the diameter of the second shaft segment, and the diameter of the second shaft segment is larger than the diameter of the third shaft segment;

[0015] The axis of the first shaft segment is offset from the axes of the second shaft segment and the third shaft segment.

[0016] A further improvement of this utility model of a car seat with shoulder adjustment function is that the upper frame of the backrest has a first shaft hole corresponding to the second shaft segment, and a first bushing is nested in the first shaft hole.

[0017] The lower frame of the backrest has a second shaft hole corresponding to the first shaft segment, and a second bushing is nested in the second shaft hole.

[0018] A further improvement of this utility model of a car seat with shoulder adjustment function is that the angle adjuster is an eccentric angle adjuster;

[0019] The eccentricity of the eccentric shaft is adapted to the eccentricity of the eccentric angle adjuster.

[0020] A further improvement of this utility model of a car seat with shoulder adjustment function is that the angle adjuster is an eccentric angle adjuster.

[0021] A further improvement of this utility model of a car seat with shoulder adjustment function is that a seat belt retractor is provided on the upper frame of the backrest, and the seat belt retractor and the angle adjuster are located on the same side.

[0022] A further improvement of this utility model of a car seat with shoulder adjustment function is that the drive motor is fixedly connected to the lower frame of the backrest.

[0023] A further improvement of this utility model of a car seat with shoulder adjustment function is that the drive motor is positioned downwards.

[0024] The advantages of this new type of car seat with shoulder adjustment function are as follows:

[0025] The present invention relates to a car seat equipped with a drive motor and an adjuster to achieve shoulder adjustment, which can reduce the production cost of the car seat. The adjuster and the drive motor have strong locking rigidity, which can reduce displacement in the event of a collision and improve the safety of the car seat.

[0026] The car seat of this invention can also integrate a seat belt retractor, so that the seat belt retractor, drive motor and angle adjuster are set on the same side, so that the force-bearing end and locking end of the car seat are on the same side, which can improve the safety and stability of the car seat.

[0027] The upper and lower backrest frames of the car seat of this invention can be rotatably connected by a concentric shaft or by an eccentric shaft. The assembly is simple and convenient, which can reduce the cost of car seat parts and ensure the structural safety and stability of the car seat. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of one embodiment of the backrest frame assembly of a car seat with shoulder adjustment function according to the present invention.

[0029] Figure 2 This is a schematic diagram of another embodiment of the backrest frame assembly of a car seat with shoulder adjustment function according to the present invention.

[0030] Figure 3 for Figure 2 A schematic diagram of the exploded decomposition structure shown.

[0031] Figure 4 This is a cross-sectional view of the upper and lower backrest frames of the car seat with shoulder adjustment function of this utility model, which are connected by an eccentric shaft.

[0032] Figure 5 This is a three-dimensional structural diagram of the eccentric shaft used in the car seat with shoulder adjustment function according to this utility model.

[0033] Figure 6 This is a schematic diagram of the structure of the eccentric shaft of the car seat with shoulder adjustment function of this utility model, which is rotated eccentrically to a corresponding position.

[0034] Figure 7 This is a schematic diagram of the structure of the eccentric shaft of the car seat with shoulder adjustment function of this utility model, which is rotated eccentrically to another corresponding position.

[0035] Figure 8 This is a cross-sectional view of the upper and lower backrest frames of the car seat with shoulder adjustment function of this utility model, which are connected by a pivot.

[0036] Figure 9 This is a schematic diagram showing the eccentricity of the upper and lower backrest frames of the car seat with shoulder adjustment function, where one side is concentrically connected by a pivot and the other side is eccentrically connected by an eccentric adjuster.

[0037] Figure 10 for Figure 9The diagram shows the relative torsional angle of the two upper side plates when the backrest frame is rotated for adjustment. Attached image description:

[0039] Lower backrest frame—21, lower side plate—211, second shaft hole—2111, second mounting hole—2112, bottom reinforcing plate—212, top reinforcing plate—213;

[0040] Backrest upper frame—22, upper side panel—221, top connecting rod—222, first shaft hole—2211, first mounting hole—2212;

[0041] Angle adjuster—23; Drive motor—24; Motor bracket—25;

[0042] Eccentric shaft—26, first shaft segment—261, second shaft segment—262, third shaft segment—263, axis of first shaft segment 261—A1, axis of second shaft segment 262—A2;

[0043] First bushing—271; Second bushing—272; First welding ring—281; Second welding ring—282; Seat belt retractor—28; Shaft—29; Nut—30; Connecting nut—31. Detailed Implementation

[0044] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0045] See Figure 1 This invention provides a car seat with shoulder adjustment function. The backrest frame assembly of this car seat includes an upper backrest frame and a lower backrest frame. The upper backrest frame can be rotated and adjusted relative to the lower backrest frame, thereby providing shoulder support for the occupant by adjusting the angle of the upper backrest frame to provide a comfortable experience. This invention aims to reduce the production cost of car seats, improve the locking stability of the upper backrest frame, reduce displacement in the event of a collision, and improve the safety of the car seat while achieving shoulder adjustment function. The following description, in conjunction with the accompanying drawings, illustrates this invention's car seat with shoulder adjustment function.

[0046] See Figure 2 This diagram shows a structural schematic of another embodiment of the backrest frame assembly of a car seat with shoulder adjustment function according to the present invention. (See also...) Figure 3 It shows Figure 2 The diagram shows the exploded decomposition structure of the illustrated structure. The following is a related explanation. Figure 2 and Figure 3 This invention describes a car seat with shoulder adjustment function.

[0047] like Figure 2 and Figure 3 As shown, the car seat with shoulder adjustment function of this utility model includes a lower backrest frame 21, an upper backrest frame 22, an adjuster 23, and a drive motor 24. The upper backrest frame 22 is rotatably connected to the lower backrest frame 21. The adjuster 23 is located at a rotatable connection between the upper backrest frame 22 and the lower backrest frame 21. The drive motor 24 is driven to rotate the adjuster 23, thereby causing the upper backrest frame 22 to rotate relative to the lower backrest frame 21 to realize the shoulder adjustment function of the car seat.

[0048] Furthermore, the upper backrest frame 22 and the lower backrest frame 21 have two rotatable connection points, located on both sides of the car seat respectively. One of the rotatable connection points is equipped with an adjuster 23, which enables the rotatable connection between the upper backrest frame 22 and the lower backrest frame 21. The other rotatable connection point is achieved through a hinge, such as a shaft or other component.

[0049] The shoulder adjustment function of the car seat of this utility model is driven by a drive motor 24 and an adjuster 23, which can reduce the cost of drive components. Moreover, the locking function of the drive motor and the adjuster is excellent, which can reduce the displacement of the upper frame 22 of the backrest during a collision.

[0050] In one specific embodiment of this utility model, such as Figure 2 and Figure 3 As shown, in this embodiment, the lower backrest frame 21 includes two lower side plates 211 and a bottom reinforcing plate 212 and a top reinforcing plate 213 connected between the two lower side plates 211. The two lower side plates 211 are arranged opposite to each other. A second shaft hole 2111 is provided at the top of one lower side plate 211, and a second mounting hole 2112 is provided at the top of the other lower side plate 211. The upper backrest frame 22 includes two upper side plates 221 and a top connecting rod 222 connecting the two upper side plates 221. The two upper side plates 221 are arranged opposite to each other. A first shaft hole 2211 is provided at the bottom of one upper side plate 221, and a first mounting hole 2212 is provided at the bottom of the other upper side plate 221. The upper side plate 221 and the lower side plate 211 are arranged opposite to each other, and the first shaft hole 2211 and the second shaft hole 2111 correspond to each other. The first shaft hole 2211 and the second shaft hole 2111 can be hinged by a shaft or other component. The first mounting hole 2212 corresponds to the second mounting hole 2112. The first mounting hole 2212 and the second mounting hole 2112 are rotatably connected by an angle adjuster 23.

[0051] Preferably, the lower parts of the two upper side panels 221 of the upper backrest frame 22 are attached to the inner side of the lower side panel 221 of the lower backrest frame 21.

[0052] When installing the angle adjuster 23, fix the fixed part of the angle adjuster 23 to the lower frame 21 of the backrest, and fix the rotating part of the angle adjuster 23 to the upper frame 22 of the backrest.

[0053] like Figure 1 As shown, in another embodiment, the upper backrest frame 22 has an overall inverted U-shape, the lower backrest frame 21 has an overall U-shape, and a reinforcing plate 223 connects the two upper side plates 221 of the upper backrest frame 22. The remaining structure of the upper backrest frame 22 and the lower backrest frame 21 is similar to... Figure 2 The structures shown in the embodiments are the same and will not be described again here.

[0054] In one specific embodiment of this utility model, such as Figures 3 to 5 As shown, an eccentric shaft 26 is provided at another rotatable connection between the upper backrest frame 22 and the lower backrest frame 21.

[0055] The upper backrest frame 22 and the lower backrest frame 21 are rotatably connected by the eccentric shaft 26. When the drive motor 24 drives the upper backrest frame 22 to rotate, it will push the eccentric shaft 26 to rotate eccentrically relative to the upper backrest frame 22.

[0056] Furthermore, the eccentric shaft 26 includes a first shaft segment 261 passing through the lower backrest frame 21, a second shaft segment 262 passing through the upper backrest frame 22, and a third shaft segment 263 connected to the second shaft segment 262; wherein the diameter of the first shaft segment 261 is larger than the diameter of the second shaft segment 262, and the diameter of the second shaft segment 262 is larger than the diameter of the third shaft segment 263; the axis A1 of the first shaft segment 261 is offset from the axis A1 of the second shaft segment 262 and the third shaft segment 263. The second shaft segment 262 is connected to the first shaft segment 261, and a bolt head is formed at the end of the first shaft segment 261 away from the second shaft segment 262. Thus, the second shaft segment 262 and the first shaft segment 261 form an eccentric shaft, and the distance between the axis A1 of the first shaft segment 261 and the axis A2 of the second shaft segment 262 is the eccentricity of the eccentric shaft 26.

[0057] Furthermore, such as Figures 3 to 5 As shown, the lower backrest frame 21 has a second shaft hole 2111 corresponding to the first shaft segment 261, and a second bushing 272 is nested in the second shaft hole 2111; the upper backrest frame 22 has a first shaft hole 2211 corresponding to the second shaft segment 262, and a first bushing 271 is nested in the first shaft hole 2211.

[0058] Specifically, the first bushing 271 is nested in the first shaft hole 2211 and is rotatably installed in the first shaft hole 2211. A first welding ring 281 is welded to the inner side of the upper side plate 221 at the location corresponding to the first shaft hole 2211. The second bushing 272 is nested in the second shaft hole 2111 and is rotatably installed in the second shaft hole 2111. A second welding ring 282 is welded to the inner side of the lower side plate 211 at the location corresponding to the second shaft hole 2111.

[0059] The first shaft segment 261 of the eccentric shaft 26 passes through the second bushing 272, the second shaft segment 262 passes through the first bushing 271, and the third shaft segment 263 is located on the inner side of the upper frame 22 of the backrest. The third shaft segment 263 is threaded and can be threadedly connected to the connecting nut 31. The connecting nut 31 abuts against the end face of the second shaft segment 262. The axial clearance and radial clearance between the first shaft segment 261 and the second bushing 272, and between the second shaft segment 262 and the first bushing 271 are both set to zero, that is, there is no axial clearance.

[0060] like Figure 6 and Figure 7 As shown, the eccentric shaft 26 rotates concentrically relative to the lower backrest frame 21. The first shaft segment 261 of the eccentric shaft 26 rotates concentrically relative to the second shaft hole 2111, and the second shaft segment 262 rotates eccentrically relative to the second shaft hole 2111. The second shaft segment 262 rotates concentrically relative to the first shaft hole 2211. The eccentric rotation of the eccentric shaft and the positional change between it and the lower backrest frame can be described as follows: Figure 6 and Figure 7 As shown.

[0061] Furthermore, the angle adjuster 23 is an eccentric angle adjuster; the eccentricity of the eccentric shaft 26 is matched with the eccentricity of the eccentric angle adjuster. Using an eccentric angle adjuster can further reduce the cost of components.

[0062] In one specific embodiment of this utility model, such as Figure 8 As shown, a pivot 29 is provided at another rotatable connection between the upper backrest frame 22 and the lower backrest frame 21. The pivot 29 is fixedly connected to the lower backrest frame 21, and the upper backrest frame 22 can be rotated and adjusted relative to the pivot 29.

[0063] The pivot 29 is preferably a bolt, which passes through a first shaft hole on the upper backrest frame 22 and a second shaft hole on the lower backrest frame 21. The bolt is fixedly connected to the lower backrest frame 21, and a nut 30 is threaded onto the end of the bolt. In this way, the upper backrest frame 22 can be rotated and adjusted relative to the bolt.

[0064] The axis of the rotating shaft 29 is aligned with the axes of the first shaft hole and the second shaft hole.

[0065] Furthermore, the angle adjuster 23 is an eccentric angle adjuster. Using an eccentric angle adjuster can further reduce the cost of components.

[0066] like Figure 9 and Figure 10 As shown, the eccentric adjuster has a certain eccentricity d. The presence of this eccentricity d causes a certain deflection angle θ at the connection point between the upper backrest frame 22 and the lower backrest frame 21 when they rotate relative to each other for adjustment. When selecting an eccentric adjuster, the deflection angle θ should be controlled within a certain range so that the deformation caused by this deflection angle θ can be absorbed by the welding tolerances of the seat frame and the slight elastic deformation of the material itself. For example, the deflection angle θ can be controlled to be less than 1° or 0.5°.

[0067] In one specific embodiment of this utility model, such as Figure 1 and Figure 2 As shown, a seat belt retractor 28 is provided on the upper frame 22 of the backrest, and the seat belt retractor 28 and the angle adjuster 23 are located on the same side.

[0068] The seatbelt retractor 28 is mounted on the upper frame 22 of the car seat back, and the seatbelt can be integrated into the car seat, enabling the car seat to achieve zero-gravity adjustment. It can also solve the problem that the seatbelt retractor cannot be fixed to the car body because there is no B-pillar for two-door sports cars.

[0069] The seat belt retractor 28 is installed on the upper backrest frame 22, so that the force of the seat belt acts directly on the upper backrest frame 22. The angle adjuster 23 and the seat belt retractor 28 are located on the same side, so that the force-bearing end and the locking end (the locking function implemented by the angle adjuster 23) of the backrest frame assembly of the car seat are on the same side, which can improve the safety and stability of the car seat.

[0070] In one specific embodiment of this utility model, such as Figure 3 As shown, the drive motor 24 is fixedly connected to the lower frame 21 of the backrest.

[0071] Furthermore, the drive motor 24 is fixedly connected to the lower backrest frame 21 via the motor bracket 25.

[0072] Furthermore, the drive motor 24 is positioned downwards. The foam of the car seat is relatively soft. If the drive motor 24 is positioned upwards, when the occupant's shoulder rests against the upper part of the backrest, the soft foam will be compressed, which may cause the occupant's shoulder to make hard contact with the body of the drive motor 24, causing discomfort to the occupant. Positioning the drive motor downwards avoids the above problem.

[0073] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A car seat with shoulder adjustment function, characterized in that, include: Lower backrest frame (21); The upper backrest frame (22) is rotatably connected to the lower backrest frame (21); An adjuster (23) is provided at a rotatable connection between the upper backrest frame (22) and the lower backrest frame (21); A drive motor (24) is connected to the adjuster (23) to drive the adjuster (23) to rotate, and the adjuster (23) drives the upper backrest frame (22) to rotate relative to the lower backrest frame (21) to realize the shoulder adjustment function of the car seat.

2. The car seat with shoulder adjustment function as described in claim 1, characterized in that, A pivot (29) is provided at another rotatable connection between the upper backrest frame (22) and the lower backrest frame (21). The pivot (29) is fixedly connected to the lower backrest frame (21), and the upper backrest frame (22) can be rotated relative to the pivot (29).

3. The car seat with shoulder adjustment function as described in claim 1, characterized in that, An eccentric shaft (26) is provided at another rotatable connection between the upper backrest frame (22) and the lower backrest frame (21).

4. The car seat with shoulder adjustment function as described in claim 3, characterized in that, The eccentric shaft (26) includes a first shaft segment (261) that passes through the lower backrest frame (21), a second shaft segment (262) that passes through the upper backrest frame (22), and a third shaft segment (263) that is connected to the second shaft segment (262); The diameter of the first shaft segment (261) is greater than the diameter of the second shaft segment (262), and the diameter of the second shaft segment (262) is greater than the diameter of the third shaft segment (263); The axis (A1) of the first shaft segment (261) is offset from the axis (A2) of the second shaft segment (262) and the third shaft segment (263).

5. The car seat with shoulder adjustment function as described in claim 4, characterized in that, The upper frame (22) of the backrest has a first shaft hole (2211) corresponding to the second shaft segment (262), and a first bushing (271) is nested in the first shaft hole (2211); The lower backrest frame (22) has a second shaft hole (2111) corresponding to the first shaft segment (261), and a second bushing (272) is nested in the second shaft hole (2111).

6. The car seat with shoulder adjustment function as described in claim 3, characterized in that, The angle adjuster (23) is an eccentric angle adjuster; The eccentricity of the eccentric shaft (26) is adapted to the eccentricity of the eccentric angle adjuster.

7. The car seat with shoulder adjustment function as described in claim 1, characterized in that, The angle adjuster (23) is an eccentric angle adjuster.

8. The car seat with shoulder adjustment function as described in claim 1, characterized in that, The upper frame (22) of the backrest is provided with a seat belt retractor (28), and the seat belt retractor (28) and the angle adjuster (23) are located on the same side.

9. The car seat with shoulder adjustment function as described in claim 1, characterized in that, The drive motor (24) is fixedly connected to the lower backrest frame (21).

10. The car seat with shoulder adjustment function as described in claim 1, characterized in that, The drive motor (24) is positioned downwards.

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