Automobile seat armrest assembly

Abstract

The utility model relates to the technical field of automobile parts, and relates to an automobile seat armrest assembly, which comprises a rotary damper and a seat armrest framework, the seat armrest framework comprises a rotating support and a fixed support, a housing fixing shaft is arranged on the rotating support, a vane fixing shaft is arranged on the fixed support, the rotating support is rotatably sleeved on the vane fixing shaft, the rotary damper is sleeved on the vane fixing shaft and is in transmission connection with the rotating support, a rebound module is sleeved on the outer side of the rotary damper, the rebound module comprises a spiral spring, one end of the spiral spring is connected with the vane fixing shaft, and the other end can be in time contact with the rotary damper. The spiral spring stores energy when the armrest rotates downward, reversely slows down the falling speed through torsion, reserves potential energy for upward lifting at the same time, makes the lifting process smooth and without jerk, and significantly improves the operation fluency and comfort.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and specifically to an automotive seat armrest assembly. Background Technology

[0002] In automotive seat design, the large armrest in the middle of the second-row 40 / 60 split-folding seats is generally quite heavy because it needs to integrate cup holders, storage compartments, and multimedia controls. Its ease of adjustment and tactile feel directly impact the passenger experience. Currently, the following technical challenges exist in its practical application:

[0003] Traditional chair armrests use undamped hinge structures. When adjusted downwards from the vertical storage position, they fall freely under gravity, impacting the lower limit with significant kinetic energy and producing noticeable noise. Over time, the impact force can cause deformation of the limit components, loosening of welds, and even cracking of the armrest frame, severely affecting the chair's lifespan and safety.

[0004] Existing technologies utilize rotary damping limiters, employing the damping effect of viscous fluids or friction plates to provide stable resistance, reduce the descent speed of the armrest, achieve a buffering effect, and improve the user experience of downward adjustment. However, the damping force of existing rotary damping limiters cannot be dynamically switched: when lifting the armrest from its lowest position, the damping force and self-overlapping force are added, creating an operational obstacle for female or elderly drivers and passengers. Frequent adjustments can easily lead to fatigue and poor comfort. Utility Model Content

[0005] This invention provides an automotive seat armrest assembly to address the problems of existing technologies.

[0006] The objective of this utility model can be achieved through the following technical solution: A car seat armrest assembly, comprising a rotary damper and a seat armrest frame, wherein the seat armrest frame includes a rotating bracket and a fixed bracket, the rotating bracket is provided with a housing fixed shaft, the fixed bracket is provided with a blade fixed shaft, the rotating bracket is rotatably sleeved on the blade fixed shaft, the rotary damper is sleeved on the blade fixed shaft and is connected to the rotating bracket in a transmission manner, and a spring-loaded module is sleeved on the outside of the rotary damper, the spring-loaded module including a helical spring, one end of the helical spring being connected to the blade fixed shaft, and the other end being able to sequentially contact the rotary damper to provide a restoring force for the rotating bracket.

[0007] A further improvement is made to the rotary damper, which includes:

[0008] The housing is sleeved on the blade fixing shaft and forms a sealed cavity for containing viscous fluid. A clamping seat is provided on the outside of the housing, and the clamping end of the clamping seat is engaged with the housing fixing shaft.

[0009] A rotating blade, wherein the central hole of the rotating blade is fitted onto the blade fixing shaft and forms a circumferential limit, and the rotating blade has receiving cavities on both sides, the receiving cavities being connected to the sealing cavity through a through flow groove;

[0010] A valve plate is movably disposed within the receiving cavity to control the flow area of ​​the flow channel;

[0011] A sealing cap, fixed to the end of the housing, is used to seal the viscous fluid.

[0012] In a further improvement, a cover is provided on the blade fixing shaft. The cover is sleeved on the outside of the rotary damper and has a mounting hole on its outside. A limit groove is provided on the outside of the cover. One end of the helical spring is inserted into the mounting hole and the other end is rotatably disposed on the outside of the rotary damper and limited by the limit groove.

[0013] In a further improvement, the outer circumferential surface of the blade fixing shaft is provided with at least one set of planar mating parts, and the inner circumferential surface of the central hole of the rotating blade is provided with a corresponding planar mating part, and the planar mating parts and the planar mating parts form a circumferential limiting fit.

[0014] In a further improvement, a radially extending limiting rod is provided on the outer side of the housing, and the free end of the limiting rod forms a rotational limiting fit with the outer circumferential surface of the fixed shaft of the housing.

[0015] In a further improvement, an assembly hole is provided on the inner side of the cover, and the assembly hole forms an axial limiting fit with the outer side of the blade fixing shaft.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The helical spring of this utility model stores energy when the handrail rotates downward, and the reverse torque slows down the falling speed. At the same time, it stores potential energy for lifting upward, so that the lifting process is smooth and without jerking, and the smoothness of operation and comfort are significantly improved.

[0018] 2. The rotary damper of this utility model achieves dynamic switching of damping force through the cooperation of valve plate and flow groove: when the handrail is adjusted downward, the valve plate blocks the flow groove, generating a large damping force to buffer the impact of falling; when it is lifted upward, the valve plate and the flow groove form a gap, the damping force is greatly reduced, and with the rebound torque of the helical spring, the operating force is significantly reduced, solving the problem of difficult lifting. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a partially enlarged view of the present invention;

[0021] Figure 3 This is an exploded view of the rotary damper of this utility model;

[0022] Figure 4 This is a partial exploded view of the present invention;

[0023] Figure 5 This is a cross-sectional view of the present invention;

[0024] Figure 6 This is a structural schematic diagram from another perspective of the present invention;

[0025] Figure 7 This is a schematic diagram of the rotation of this utility model.

[0026] In the diagram, 1. Rotary damper; 11. Housing; 111. Limiting groove; 112. Clamping seat; 113. Limiting rod; 12. Rotating blade; 121. Center hole; 1211. Receiving cavity; 1212. Flow groove; 13. Valve plate; 14. Seating cover; 2. Seat armrest frame; 21. Rotating bracket; 211. Housing fixing shaft; 22. Fixing bracket; 221. Blade fixing shaft; 2211. Planar mating part; 3. Rebound module; 31. Helical spring; 32. Cover; 321. Mounting hole one. Detailed Implementation

[0027] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] The following is a description of the embodiments and appendices. Figures 1-7 The technical solution of this utility model will be further described below.

[0030] Example 1

[0031] An automotive seat armrest assembly includes a rotary damper 1 and a seat armrest frame 2. The seat armrest frame 2 includes a rotating bracket 21 and a fixed bracket 22. The rotating bracket 21 is provided with a housing fixing shaft 211, and the fixed bracket 22 is provided with a blade fixing shaft 221. The rotating bracket 21 is rotatably sleeved on the blade fixing shaft 221. The rotary damper 1 is sleeved on the blade fixing shaft 221 and is connected to the rotating bracket 21 in a transmission manner. A spring-loaded module 3 is sleeved on the outside of the rotary damper 1. The spring-loaded module 3 includes a helical spring 31. One end of the helical spring 31 is connected to the blade fixing shaft 221, and the other end can sequentially contact the rotary damper 1 to provide a restoring force for the rotating bracket 21.

[0032] The rotary damper 1 includes:

[0033] The housing 11 is sleeved on the blade fixing shaft 221 and forms a sealed cavity for containing viscous fluid. A clamping seat 112 is provided on the outside of the housing 11, and the clamping end of the clamping seat 112 is engaged with the housing fixing shaft 211.

[0034] A rotating blade 12, the central hole 121 of the rotating blade 12 is sleeved on the blade fixing shaft 221 and forms a circumferential limit, and a receiving cavity 121 is provided on both sides of the rotating blade 12, the receiving cavity 121 being connected to the sealing cavity through a through flow groove 122;

[0035] The valve plate 13 is movably disposed in the receiving cavity 121 and is used to control the flow area of ​​the flow channel 122;

[0036] A sealing cap 14 is fixed to the end of the housing 11 and is used to seal the viscous fluid;

[0037] A cover 32 is provided on the blade fixing shaft 221. The cover 32 is sleeved on the outside of the rotary damper 1 and has a mounting hole 321 on its outside. A limiting groove 111 is provided on the outside of the housing 11. One end of the helical spring 31 is inserted into the mounting hole 321, and the other end is rotatably disposed on the outside of the rotary damper 1 and limited by the limiting groove 111.

[0038] like Figures 1-7 As shown, the working principle of this utility model is as follows:

[0039] Initial state: When the seat armrest frame 2 is in the storage position, the coil spring 31 is in a naturally relaxed state. At this time, there is a certain gap between the end point of the coil spring 31 on the housing 11 and the limiting groove 321.

[0040] Buffering and deceleration phase: When the seat armrest frame 2 is rotated downwards for adjustment, the rotating bracket 21 drives the housing 11 to rotate clockwise, and the partition inside the housing 11 squeezes the viscous fluid in the sealed cavity. At this time, the check valve (i.e., valve plate 13) rotates around its own hinge axis under the action of fluid compression. When the valve plate 13 contacts the inner hole surface of the rotating blade 12, the guide hole (i.e., flow groove 1212) on the surface of the rotating blade 12 is completely blocked, the flow path of the viscous fluid is restricted, a large damping force is generated, and the downward rotation speed of the armrest is effectively reduced, thus achieving a buffering effect.

[0041] Spring limiting and storage phase: When the seat armrest frame 2 reaches Figure 7 At position 2-2', one end of the coil spring 31 abuts against the limiting groove 321. During the continued descent, the coil spring 31 begins to generate preload, applying an upward torque to the seat armrest frame 2. As the armrest continues to rotate downwards... Figure 7 In position 2-3 (completely flat), the coil spring 31 is further twisted to store energy, which both slows down the descent speed of the handrail through reverse torque and stores elastic potential energy to provide assistance for subsequent upward flipping.

[0042] From the flat position to the storage process (flipping it up):

[0043] When the seat armrest frame 2 is flipped upwards, the rotating bracket 21 drives the housing 11 to rotate counterclockwise, and the inner cavity partition of the housing 11 squeezes the viscous fluid in the opposite direction. At this time, the valve plate 13 rotates in the opposite direction under the action of fluid pressure, forming a gap (not completely blocked) with the guide hole (i.e., the flow groove 1212) of the rotating blade 12, and the viscous fluid can pass smoothly through the flow groove 1212, and the damping force is greatly reduced (negligible).

[0044] The coil spring 31 releases the pre-stored elastic potential energy, generating an upward restoring torque. This torque works in conjunction with the external force applied by the human body to overcome the weight of the handrail, allowing the handrail to be easily flipped up, thus achieving a labor-saving effect.

[0045] Furthermore, the sealing cover 14 of the rotary damper 1 is fixed to the end of the housing 11 to form a seal for the viscous fluid in the sealing cavity; the clamping seat 112 is engaged with the housing fixing shaft 211, the central hole 121 of the rotating blade 12 and the planar mating part 2211 of the blade fixing shaft 221 form a circumferential limit, the receiving cavity 1211 provides the valve plate 13 with a space for movement, ensuring that all components work together; the helical spring 31 is sleeved on the outside of the cover 32, and the cover 32 realizes the physical isolation between the helical spring 31 and the housing 11, effectively reducing the friction between the helical spring 31 and the housing 11 and improving the service life of the equipment.

[0046] Both ends of the helical spring 31 are bent. During assembly: the helical spring 31 is sleeved on the outside of the cover 32, one straight end is inserted into the mounting hole 321 of the cover 32, and the other straight end is rotatably set on the outside of the housing 11 and limited by the limiting groove 321. The cover 32 realizes the physical isolation between the helical spring 31 and the housing 11, effectively reducing the friction between the helical spring 31 and the housing 11 and improving the service life of the equipment.

[0047] Alternatively, the direction of rotation of the coil spring 31 can be changed. When the handrail frame rotates upward to position 2-2, it contacts the limiting groove 111 on the housing 11, generating spring preload until the handrail frame reaches the 2-1 retracted position. This allows the handrail to rotate forward and pop out at a certain angle under the force of the coil spring 31 when the retracted position needs to be unfolded, making it convenient for passengers to adjust downwards, thus saving effort and improving convenience.

[0048] As a further preferred embodiment, the outer peripheral surface of the blade fixing shaft 221 is provided with at least one set of planar mating parts 2211, and the inner peripheral surface of the center hole 121 of the rotating blade 12 is provided with a corresponding planar mating part 1211, and the planar mating parts 2211 and the planar mating parts 1211 form a circumferential limiting fit.

[0049] Specifically, during assembly, the center hole 121 of the rotating blade 12 is fitted into the blade fixing shaft 221, so that the planar mating part 1211 and the planar mating part 2211 are precisely fitted together to achieve circumferential limiting fit, effectively preventing relative rotation between the rotating blade 12 and the blade fixing shaft 221, ensuring that the rotating blade 12 remains fixed when the housing 11 rotates, ensuring stable damping effect when the viscous fluid flows through the flow groove 1212, and avoiding damping force fluctuations caused by circumferential sliding.

[0050] As a further preferred embodiment, the outer side of the housing 11 is provided with a radially extending limiting rod 113, and the free end of the limiting rod 113 forms a rotational limiting fit with the outer peripheral surface of the housing fixing shaft 211.

[0051] Specifically, the free end of the limiting rod 113 forms a rotational limiting engagement with the outer circumferential surface of the housing fixing shaft 211. When the rotating bracket 21 drives the housing 11 to rotate clockwise to the limit position, the free end of the limiting rod 113 contacts the outer circumferential surface of the housing fixing shaft 211, preventing the housing 11 from rotating further; when it rotates counterclockwise to the storage position, the other side of the limiting rod 113 contacts the outer circumferential surface of the housing fixing shaft 211, forming a reverse limiting engagement.

[0052] As a further preferred embodiment, the inner side of the cover is provided with an assembly hole, which forms an axial limiting fit with the outer side of the blade fixing shaft.

[0053] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A car seat armrest assembly, comprising a rotary damper and a seat armrest frame, wherein the seat armrest frame includes a rotating bracket and a fixed bracket, characterized in that, The rotating bracket is provided with a housing fixing shaft, and the fixing bracket is provided with a blade fixing shaft. The rotating bracket is rotatably sleeved on the blade fixing shaft. The rotary damper is sleeved on the blade fixing shaft and is connected to the rotating bracket in a transmission manner. A spring-loaded module is sleeved on the outside of the rotary damper. The spring-loaded module includes a helical spring. One end of the helical spring is connected to the blade fixing shaft, and the other end can make sequential contact with the rotary damper.

2. The automotive seat armrest assembly according to claim 1, characterized in that, The rotary damper includes: The housing is sleeved on the blade fixing shaft and forms a sealed cavity for containing viscous fluid. A clamping seat is provided on the outside of the housing, and the clamping end of the clamping seat is engaged with the housing fixing shaft. A rotating blade, wherein the central hole of the rotating blade is fitted onto the blade fixing shaft and forms a circumferential limit, and the rotating blade has receiving cavities on both sides, the receiving cavities being connected to the sealing cavity through a through flow groove; A valve plate is movably disposed within the receiving cavity to control the flow area of ​​the flow channel; A sealing cap, fixed to the end of the housing, is used to seal the viscous fluid.

3. The automotive seat armrest assembly according to claim 2, characterized in that, A cover is provided on the blade fixing shaft. The cover is sleeved on the outside of the rotary damper and has a mounting hole on its outside. A limit groove is provided on the outside of the cover. One end of the helical spring is inserted into the mounting hole and the other end is rotatably disposed on the outside of the rotary damper and limited by the limit groove.

4. A car seat armrest assembly according to claim 2 or 3, characterized in that, The outer circumferential surface of the blade fixing shaft is provided with at least one set of planar mating parts, and the inner circumferential surface of the central hole of the rotating blade is provided with a corresponding planar mating part, and the planar mating parts and the planar mating parts form a circumferential limiting fit.

5. The automotive seat armrest assembly according to claim 1, characterized in that, The outer side of the housing is provided with a radially extending limiting rod, and the free end of the limiting rod forms a rotational limiting fit with the outer peripheral surface of the housing's fixed shaft.

6. The automotive seat armrest assembly according to claim 3, characterized in that, The inner side of the cover is provided with an assembly hole, which forms an axial limiting fit with the outer side of the blade fixing shaft.

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