Shoulder support adjusting mechanism and automobile seat

Abstract

This invention relates to the field of automotive seat technology, disclosing a shoulder support adjustment mechanism and an automotive seat. The adjustment mechanism includes: a swing member; a power input eccentric shaft disposed near the back of the seat; one end of the power input eccentric shaft is connected to a drive member to input power, and the other end of the power input eccentric shaft is rotatably connected to the swing member; a power output eccentric shaft, one end of which is rotatably connected to the swing member, and the end of the power output eccentric shaft away from the swing member outputs power; and an auxiliary eccentric shaft rotatably connected to the swing member. When the drive member drives the power input eccentric shaft to rotate, the swing member swings, and the power output eccentric shaft and the auxiliary eccentric shaft rotate. The advantage of this invention is that the shoulder support adjustment mechanism allows the motor-driven shaft to be moved rearward, and the motor can also be moved rearward, avoiding contact with the passenger and providing sufficient space on the front side of the seat for comfort components, resulting in good seat comfort.

Description

Technical Field

[0001] This invention relates to the field of automotive seat technology, and more particularly to a shoulder support adjustment mechanism and an automotive seat. Background Technology

[0002] Shoulder support in car seats refers to the part of the seat that provides support for the shoulders, primarily to alleviate fatigue during long drives or rides. To improve the comfort of car seats, in addition to adjustable backrest angles, some seats also include adjustable shoulder support on the backrest.

[0003] Current methods for adjusting shoulder support in car seats primarily include: one method uses a lead screw motor to drive a flexible shaft for adjustment; the other uses an adjuster motor to drive an electric adjuster via a synchronizer rod. In the first method, the lead screw is mostly perpendicular to the motor, resulting in poor comfort. In the second method, the area around the adjuster synchronizer rod is uncomfortable, and it's difficult to arrange other seat comfort components. Furthermore, the pivot points in both methods are relatively close to the front of the car seat, potentially pressing against the passenger, and the limited space at the front makes it difficult to arrange comfort components. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the existing technology, the technical problem to be solved by the present invention is to propose a shoulder support adjustment mechanism and car seat that can move the pivot for shoulder support adjustment in the backrest backward, increase the space in front of the seat, facilitate the arrangement of comfort components, and improve passenger comfort.

[0005] The technical solution adopted by this invention to solve its technical problem is to propose a shoulder support adjustment mechanism, which is installed in the backrest of a car seat for adjusting the shoulder support on the backrest. The side of the backrest closest to the passenger is the front, and the side of the backrest furthest from the passenger is the back. The adjustment mechanism includes:

[0006] Swing component;

[0007] An eccentric power input shaft is disposed near the back of the backrest; one end of the eccentric power input shaft is connected to a drive component to input power, and the other end of the eccentric power input shaft is rotatably connected to the swing component.

[0008] A power output eccentric shaft, one end of which is rotatably connected to the swing member, and the end of the power output eccentric shaft away from the swing member outputs power;

[0009] An auxiliary eccentric rotating shaft is rotatably connected to the swing component;

[0010] When the driving member drives the power input eccentric shaft to rotate, the oscillating member oscillates, and the power output eccentric shaft and the auxiliary eccentric shaft rotate.

[0011] Furthermore, the power output eccentric shaft is located near the front side of the backrest, and the drive component is located near the rear side of the backrest.

[0012] The adjustment mechanism converts the power of the drive component located on the back of the backrest to be output from the front of the backrest.

[0013] Furthermore, the end of the power output eccentric shaft away from the swing member is positioned close to the front side of the backrest.

[0014] Furthermore, the eccentricity of the power input eccentric shaft, the power output eccentric shaft, and the auxiliary eccentric shaft are equal.

[0015] Furthermore, the power input eccentric shaft, the power output eccentric shaft, and the auxiliary eccentric shaft each include a first shaft, a cam, and a second shaft. The first shaft and the second shaft are respectively connected to both sides of the cam, and the first shaft and the second shaft are parallel and eccentrically arranged.

[0016] The first shafts of the power input eccentric shaft, the power output eccentric shaft, and the auxiliary eccentric shaft are all rotatably connected to the swing member; the second shaft of the power input eccentric shaft is connected to the driving member; and the second shaft of the power output eccentric shaft outputs power.

[0017] Furthermore, the center distance between the first shaft and the second shaft of the power input eccentric shaft, the center distance between the first shaft and the second shaft of the power output eccentric shaft, and the center distance between the first shaft and the second shaft of the auxiliary eccentric shaft are all equal.

[0018] Furthermore, it also includes a housing, in which the first shafts of the power input eccentric shaft, the power output eccentric shaft, and the auxiliary eccentric shaft, as well as the cams of the three shafts, are all disposed, and the swinging member is located in the housing;

[0019] The second shafts of both the power input eccentric shaft and the power output eccentric shaft extend beyond the housing, and the second shaft of the auxiliary eccentric shaft is rotatably mounted on the housing.

[0020] Furthermore, bushings are fitted on both the first shaft and the second shaft.

[0021] Furthermore, it also includes a drive unit and an angle adjuster, wherein the drive unit is used to drive the power input eccentric shaft and is arranged in a direction parallel to the front and back of the backrest; the power output eccentric shaft is connected to the angle adjuster.

[0022] The technical solution adopted by the present invention to solve its technical problem is to also provide a car seat, comprising:

[0023] Seat;

[0024] A backrest is rotatably mounted on the seat, and the backrest is provided with shoulder support;

[0025] An adjustment mechanism, disposed in the backrest, is used to adjust the angle at which the shoulder rests on the backrest; wherein the adjustment mechanism includes:

[0026] Swing component;

[0027] An eccentric power input shaft is disposed near the back of the backrest; one end of the eccentric power input shaft is connected to a drive component to input power, and the other end of the eccentric power input shaft is rotatably connected to the swing component.

[0028] A power output eccentric shaft, one end of which is rotatably connected to the swing member, and the end of the power output eccentric shaft away from the swing member outputs power;

[0029] An auxiliary eccentric rotating shaft is rotatably connected to the swing component;

[0030] When the driving member drives the power input eccentric shaft to rotate, the swing member swings, and the power output eccentric shaft and the auxiliary eccentric shaft rotate.

[0031] An angle adjuster is disposed between the backrest and the shoulder support, and the end of the power output eccentric shaft away from the swing member is connected to the adjuster;

[0032] The backrest is provided with an adjustment mechanism on each side, and the power input eccentric shafts of the two adjustment mechanisms are connected and driven by the same driving component.

[0033] Compared with the prior art, the present invention has at least the following beneficial effects:

[0034] In this invention, the shoulder adjustment mechanism mainly includes a power input eccentric shaft, a power output eccentric shaft, an auxiliary eccentric shaft, and a swinging component. When a driving component (such as a motor) drives the power input eccentric shaft to rotate, the swinging component rotates, causing the power output eccentric shaft to rotate and output power to the angle adjuster to adjust the shoulder support angle on the car seat back. The auxiliary eccentric shaft restricts the movement of the swinging component to a single direction. This shoulder adjustment mechanism allows the power input eccentric shaft to be positioned as close as possible to the back of the seat back, and the motor can also be positioned as close as possible to the back of the car seat back, preventing passengers from touching the shaft or motor. It also allows sufficient space near the front of the car seat for other comfort components, improving the comfort of the car seat. This shoulder adjustment mechanism does not require changing the position of the original angle adjuster in the car seat back, and can be used in new car seat products or for structural updates in older car seats. It is convenient to use and has a wide range of applications. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the shoulder support adjustment mechanism of the present invention installed in the seat back;

[0036] Figure 2 for Figure 1 A structural diagram from another perspective;

[0037] Figure 3 A schematic diagram of a structure in which two adjustment mechanisms share the same driving component;

[0038] Figure 4 This is a schematic diagram of a shoulder support adjustment mechanism of the present invention (with the box body removed);

[0039] Figure 5 for Figure 4 A structural diagram from another perspective;

[0040] Figure 6 Exploded view of the shoulder support adjustment mechanism after removing the drive components;

[0041] Figure 7 This is a schematic diagram of the assembly of the power input eccentric shaft, the power output eccentric shaft, the auxiliary eccentric shaft, and the swing component.

[0042] Figure 8 for Figure 7 A structural diagram from another perspective.

[0043] In the picture:

[0044] 1. Oscillating component; 2. Power input eccentric shaft; 3. Power output eccentric shaft; 4. Auxiliary eccentric shaft; 5. Housing; 6. Bushing; 7. Drive component; 8. Angle adjuster; 9. Backrest; 234a. First shaft; 234b. Cam; 234c. Second shaft. Detailed Implementation

[0045] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings to further illustrate the technical solutions of the present invention. However, the present invention is not limited to these embodiments.

[0046] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0047] Furthermore, in this invention, descriptions involving terms such as "first," "second," and "a" are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0048] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0049] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0050] Example 1:

[0051] like Figure 1 and Figure 2As shown in this embodiment, a shoulder support adjustment mechanism is installed in the backrest 9 of a car seat, specifically on the frame of the backrest 9. It is used to adjust the shoulder support on the backrest 9, working in conjunction with an adjuster 8 to adjust the position of the shoulder support on the backrest 9 to accommodate passengers of different body types and improve passenger comfort. The side of the backrest 9 closest to the passenger is the front, and the side furthest from the passenger is the back. In actual use, the passenger's back rests directly against the backrest 9, and the shoulder support supports the passenger's shoulders. When the motor and drive shaft of the shoulder adjustment mechanism are close to the front side of the backrest 9, they can easily come into contact with the passenger, resulting in poor passenger comfort. Therefore, generally, the further the motor and drive shaft are positioned towards the back of the backrest 9, the higher the comfort level and the easier it is to install comfort components (such as foam components) in the space near the front of the backrest 9 to improve passenger comfort.

[0052] Combination Figures 1-8 As shown, the shoulder support adjustment mechanism of this embodiment mainly includes: a swinging component 1, a power input eccentric shaft 2, a power output eccentric shaft 3, an auxiliary eccentric shaft 4, a housing 5, a bushing 6, a drive component 7, and an angle adjuster 8.

[0053] The power input eccentric shaft 2 is positioned near the back of the backrest 9. One end of the power input eccentric shaft 2 is connected to the drive component 7 to input power. In this embodiment, the drive component 7 is preferably a motor. The motor drives the power input eccentric shaft 2 to rotate, inputting power to the shoulder support adjustment mechanism. The other end of the power input eccentric shaft 2 is rotatably connected to the swing component 1. When the motor drives the power input eccentric shaft 2 to rotate, the power input eccentric shaft 2 drives the swing component 1. In this embodiment, the swing component 1 is a cam 234b plate, which performs a swinging motion during operation.

[0054] Specifically, the power input eccentric shaft 2 includes a first shaft 234a, a cam 234b, and a second shaft 234c. The first shaft 234a and the second shaft 234c of the power input eccentric shaft 2 are respectively connected to both sides of the cam 234b. The first shaft 234a and the second shaft 234c of the power input eccentric shaft 2 are parallel and eccentrically arranged. It can be understood that the power input eccentric shaft 2 is the eccentric shaft of the cam 234b. The second shaft 234c of the power input eccentric shaft 2 is driven by a motor and is rotatably connected to the swing member 1. When the motor drives the eccentric shaft 2, the rotation center of the second shaft 234c is the rotation center of the motor shaft. The first shaft 234a of the eccentric shaft 2 is not concentric with its second shaft 234c. Therefore, the first shaft 234a is forward, while the second shaft 234c can be set close to the back of the backrest 9, that is, set at the rear.

[0055] One end of the power output eccentric shaft 3 is rotatably connected to the swing member 1. The end of the power output eccentric shaft 3 away from the swing member 1 outputs power. This power output end of the power output eccentric shaft 3 is connected to the angle adjuster 8, which drives the angle adjuster 8 to adjust the shoulder support angle, i.e., adjust the position of the shoulder support. The auxiliary eccentric shaft 4 is also rotatably connected to the swing member 1. The end of the auxiliary eccentric shaft away from the swing member 1 is hinged to the housing 5. In actual operation, when the drive member 7 drives the power input eccentric shaft 2 to rotate, the swing member 1 swings, and the power output eccentric shaft 3 and the auxiliary eccentric shaft 4 rotate. This realizes that the rotation of the drive member 7 (motor) is input from the power input eccentric shaft 2 and output from the power output eccentric shaft 3. The auxiliary eccentric shaft 4 limits the movement trajectory of the swing member 1, making the movement of the swing member 1 and the cam 234b plate unique.

[0056] Specifically, in this embodiment, both the power output eccentric shaft 3 and the auxiliary eccentric shaft 4 include a first shaft 234a, a cam 234b, and a second shaft 234c. The first shaft 234a and the second shaft 234c are respectively connected to both sides of the cam 234b, and are parallel and eccentrically arranged. The first shaft 234a of the power output eccentric shaft 3 is rotatably connected to the swing member 1, i.e., the cam 234b plate, and the second shaft 234c of the power output eccentric shaft 3 is connected to the angle adjuster 8 to output power and adjust the shoulder support on the backrest 9. The first shaft 234a of the auxiliary eccentric shaft 4 is rotatably connected to the swing member 1, i.e., the cam 234b plate, and the second shaft 234c of the auxiliary eccentric shaft 4 is rotatably connected to the housing 5.

[0057] In this embodiment, the second shaft 234c of the power input eccentric shaft 2 is positioned near the back side of the car seat back 9, and the drive component 7, i.e., the motor, is also positioned near the back side of the car seat back 9. The power output eccentric shaft 3 is positioned near the front side of the back 9, specifically, the end of the power output eccentric shaft 3 away from the swing component 1 is positioned near the front side of the back 9, thus eliminating the need to change the original position of the adjuster 8. In this embodiment, the power from the drive component 7 located on the back side of the back 9 is converted to be output from the front side of the back 9 via the shoulder support adjustment mechanism.

[0058] In this embodiment, the eccentric distances of the power input eccentric shaft 2, the power output eccentric shaft 3, and the auxiliary eccentric shaft 4 are equal. Specifically, the center distances between the first shaft 234a and its second shaft 234c of the power input eccentric shaft 2, the first shaft 234a and its second shaft 234c of the power output eccentric shaft 3, and the first shaft 234a and its second shaft 234c of the auxiliary eccentric shaft 4 are all equal.

[0059] In practical use, the shoulder adjustment mechanism mainly includes a power input eccentric shaft 2, a power output eccentric shaft 3, an auxiliary eccentric shaft 4, and a swinging component 1. When the driving component 7 (such as a motor) drives the power input eccentric shaft 2 to rotate, the swinging component 1 rotates, causing the power output eccentric shaft 3 to rotate and output power to the angle adjuster 8, adjusting the shoulder support angle on the car seat back 9. The auxiliary eccentric shaft 4 restricts the movement of the swinging component 1. This shoulder adjustment mechanism allows the power input eccentric shaft 2 to be positioned as close as possible to the back of ...

[0060] Preferably, the shoulder support adjustment mechanism of this embodiment also includes a housing 5, wherein the first shafts 234a of the power input eccentric shaft 2, the power output eccentric shaft 3, and the auxiliary eccentric shaft 4, as well as the cams 234b of the three shafts, are all disposed in the housing 5, and the swing member 1 is disposed in the housing 5; this ensures that the movement of the components in the housing 5 is not disturbed by external factors, and that the swing member 1 does not interfere with the movement of surrounding components. The second shafts 234c of both the power input eccentric shaft 2 and the power output eccentric shaft 3 extend outside the housing 5, and the second shaft 234c of the auxiliary eccentric shaft 4 is rotatably disposed on the housing 5.

[0061] In this embodiment, the housing 5 is composed of two halves that are cut in half. The two halves are fixedly connected by bolts to form the housing 5, which facilitates disassembly, assembly, replacement, and maintenance. Preferably, in this embodiment, bushings 6 are fitted on the first shaft 234a and the second shaft 234c of the power input eccentric shaft 2, the power output eccentric shaft 3, and the auxiliary eccentric shaft 4, which can reduce the friction of each shaft. When the bushings wear out, they can be replaced.

[0062] Preferably, in this embodiment, the power input eccentric shaft 2 is electrically adjusted when driven by the drive member 7. That is, the shoulder support adjustment mechanism in this embodiment also includes the drive member 7 and the angle adjuster 8. The drive member 7 is used to drive the power input eccentric shaft 2, and the drive member 7 is arranged in a direction parallel to the front and back of the backrest 9; the power output eccentric shaft 3 is connected to the angle adjuster 8.

[0063] During operation, the drive component 7, i.e., the motor, drives the power input eccentric shaft 2 to rotate, which in turn causes the swing component 1, i.e., the cam 234b plate, to swing. At the same time, it assists the rotation of the eccentric shaft 4 and the power output eccentric shaft 3. The power output eccentric shaft 3 drives the angle adjuster 8 to work, adjusting the shoulder support on the car seat back 9 to improve passenger comfort.

[0064] Example 2:

[0065] The car seat in this embodiment encompasses all the features of the shoulder support adjustment mechanism in Embodiment 1, and represents the practical application of the shoulder support adjustment mechanism in Embodiment 1 in a car seat, as well as its specific cooperation with the accessories in the car seat.

[0066] The car seat in this embodiment includes:

[0067] Seat (not labeled in the diagram);

[0068] The backrest 9 is rotatably mounted on the seat, and shoulder support is provided on the backrest 9;

[0069] An adjustment mechanism, located in the backrest 9, is used to adjust the angle at which the shoulders are supported on the backrest 9; the adjustment mechanism mainly includes the following components:

[0070] Swing component 1;

[0071] The power input eccentric shaft 2 is located near the back of the backrest 9; one end of the power input eccentric shaft 2 is connected to the drive component 7 to input power, and the other end of the power input eccentric shaft 2 is rotatably connected to the swing component 1.

[0072] The eccentric shaft 3 is used for power output. One end of the eccentric shaft 3 is rotatably connected to the swing member 1. The end of the eccentric shaft 3 away from the swing member 1 outputs power.

[0073] The auxiliary eccentric shaft 4 is rotatably connected to the swing component 1;

[0074] When the driving component 7 drives the power input eccentric shaft 2 to rotate, the swing component 1 swings, and the power output eccentric shaft 3 and the auxiliary eccentric shaft 4 rotate.

[0075] An adjuster 8 is located between the backrest 9 and the shoulder support, and the end of the power output eccentric shaft 3 away from the swing element 1 is connected to the adjuster.

[0076] An adjustment mechanism is provided on each side of the backrest 9, and the power input eccentric shaft 2 of the two adjustment mechanisms is connected and driven by the same driving component 7.

[0077] In this design, the shoulder support adjustment mechanism can move the motor-driven shaft backward, and the motor can also be moved backward, which can avoid hitting the passenger and provide enough space in front of the seat to arrange comfort components, resulting in good seat comfort.

Claims

1. A shoulder support adjustment mechanism, disposed in the backrest of a car seat, for adjusting the shoulder support on the backrest, wherein, The side of the backrest closest to the passenger is the front, and the side of the backrest furthest from the passenger is the back. The adjustment mechanism includes: Swing component; An eccentric power input shaft is disposed near the back of the backrest; one end of the eccentric power input shaft is connected to a drive component to input power, and the other end of the eccentric power input shaft is rotatably connected to the swing component. A power output eccentric shaft, one end of which is rotatably connected to the swing member, and the end of the power output eccentric shaft away from the swing member outputs power; An auxiliary eccentric rotating shaft is rotatably connected to the swing component; When the driving member drives the power input eccentric shaft to rotate, the oscillating member oscillates, and the power output eccentric shaft and the auxiliary eccentric shaft rotate.

2. The shoulder support adjustment mechanism according to claim 1, characterized in that, The power output eccentric shaft is located near the front side of the backrest, and the drive component is located near the back side of the backrest. The adjustment mechanism converts the power of the drive component located on the back of the backrest to be output from the front of the backrest.

3. The shoulder support adjustment mechanism according to claim 1 or 2, characterized in that, The end of the power output eccentric shaft away from the swing member is located near the front side of the backrest.

4. The shoulder support adjustment mechanism according to claim 1, characterized in that, The eccentricity of the power input eccentric shaft, the power output eccentric shaft, and the auxiliary eccentric shaft is equal.

5. The shoulder support adjustment mechanism according to claim 4, characterized in that, The power input eccentric shaft, the power output eccentric shaft, and the auxiliary eccentric shaft each include a first shaft, a cam, and a second shaft. The first shaft and the second shaft are respectively connected to both sides of the cam, and the first shaft and the second shaft are parallel and eccentrically arranged. The first shafts of the power input eccentric shaft, the power output eccentric shaft, and the auxiliary eccentric shaft are all rotatably connected to the swing member; the second shaft of the power input eccentric shaft is connected to the driving member; and the second shaft of the power output eccentric shaft outputs power.

6. The shoulder support adjustment mechanism according to claim 5, characterized in that, The center distance between the first shaft and the second shaft of the power input eccentric shaft, the center distance between the first shaft and the second shaft of the power output eccentric shaft, and the center distance between the first shaft and the second shaft of the auxiliary eccentric shaft are all equal.

7. The shoulder support adjustment mechanism according to claim 5 or 6, characterized in that, It also includes a housing, in which the first shafts of the power input eccentric shaft, the power output eccentric shaft, and the auxiliary eccentric shaft, as well as the cams of the three shafts, are all disposed, and the swinging member is located in the housing; The second shafts of both the power input eccentric shaft and the power output eccentric shaft extend beyond the housing, and the second shaft of the auxiliary eccentric shaft is rotatably mounted on the housing.

8. The shoulder support adjustment mechanism according to claim 5 or 6, characterized in that, Both the first shaft and the second shaft are fitted with bushings.

9. The shoulder support adjustment mechanism according to claim 1, characterized in that, It also includes a drive unit and an angle adjuster, wherein the drive unit is used to drive the power input eccentric shaft and is arranged in a direction parallel to the front and back of the backrest; the power output eccentric shaft is connected to the angle adjuster.

10. A car seat, characterized in that, include: Seat; A backrest is rotatably mounted on the seat, and the backrest is provided with shoulder support; An adjustment mechanism, disposed in the backrest, is used to adjust the angle at which the shoulder rests on the backrest; wherein the adjustment mechanism includes: Swing component; An eccentric power input shaft is disposed near the back of the backrest; one end of the eccentric power input shaft is connected to a drive component to input power, and the other end of the eccentric power input shaft is rotatably connected to the swing component. A power output eccentric shaft, one end of which is rotatably connected to the swing member, and the end of the power output eccentric shaft away from the swing member outputs power; An auxiliary eccentric rotating shaft is rotatably connected to the swing component; When the driving member drives the power input eccentric shaft to rotate, the swing member swings, and the power output eccentric shaft and the auxiliary eccentric shaft rotate. An angle adjuster is disposed between the backrest and the shoulder support, and the end of the power output eccentric shaft away from the swing member is connected to the angle adjuster; The backrest is provided with an adjustment mechanism on each side, and the power input eccentric shafts of the two adjustment mechanisms are connected and driven by the same driving component.

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