A damping mechanism built in a rear central armrest

Abstract

The utility model discloses a back row central handrail built -in damping mechanism, including having two -way damping's gas spring, the cylinder end of gas spring is fixed with through the pivot card and the metal welding frame inside lower cover body skeleton and is connected, the piston rod in gas spring is rotatively connected with one end of metal swing arm spare, the other end side of metal swing arm spare has first pivot, first pivot passes through metal welding frame and lower cover body skeleton and is connected with backrest skeleton assembly, metal welding frame and lower cover body skeleton can be about first pivot and the up and down of backrest skeleton assembly overturn. The damping mechanism in the utility model is arranged in the handrail assembly inside, will not interfere with the backrest movement, and can reduce the damping sound after gas spring compression or stretch, and the damping effect is better than the external damping mechanism relatively, and the speed is more uniform and gentle in the opening process of handrail, and the quality of product is increased.

Description

Technical Field

[0001] This utility model belongs to the field of seat armrests, specifically relating to a built-in damping mechanism in the rear center armrest. Background Technology

[0002] To improve the user experience and reduce the space occupied by the rear center armrest and its limited adaptability to various scenarios, most existing cars use a flip-up center armrest with damping function. One end of the damper is connected to the side wall of the backrest frame assembly via a fixed bracket, and the other end is linked to the armrest's pivot shaft via a connecting rod. When the armrest rotates, the rotational motion is converted into the linear motion of the damper to achieve damping control. However, this external damping mechanism has the following problems:

[0003] 1. External damping mechanisms usually require additional installation space. This not only requires reserving the length for the damping mechanism itself, but also the space for the motion trajectory, connecting rods and fixed supports. Therefore, the overall structure is larger in size. During the movement, it will interfere with the backrest, so it is necessary to add an avoidance design to the backrest, which increases the complexity of the design and weakens the strength of the backrest.

[0004] 2. Since the external damping mechanism is located between the backrest frame assembly and the backrest, there is no structure to shield it, resulting in relatively high damping noise.

[0005] 3. The external damping mechanism does not open smoothly during the handrail opening process. It accelerates down during opening and then slows down, resulting in a jerky feeling during the descent. Utility Model Content

[0006] The purpose of this utility model is to solve the above-mentioned problems by providing a built-in damping mechanism in the rear center armrest. This damping mechanism is arranged inside the armrest assembly, so it will not interfere with the movement of the backrest and can reduce the damping noise after the gas spring is compressed or stretched. At the same time, the damping effect is better than that of an external damping mechanism, and the armrest opens more evenly and smoothly, which increases the quality of the product.

[0007] To achieve the above objectives, this utility model provides a built-in damping mechanism for the rear center armrest, including a gas spring with bidirectional damping. The cylinder end of the gas spring is fixedly connected to a metal welding frame inside the lower cover body frame via a pivot clip. The piston rod in the gas spring is rotatably connected to one end of a metal swing arm. The other end of the metal swing arm has a first pivot on its side. The first pivot passes through the metal welding frame and the lower cover body frame and is connected to the backrest frame assembly. The metal welding frame and the lower cover body frame can rotate up and down relative to the backrest frame assembly around the first pivot.

[0008] As a further optimization, a metal swing arm housing is provided between the metal swing arm component and the metal welding frame to cooperate with the metal swing arm component. The metal swing arm housing is made of POM material, which can prevent abnormal noise caused by flipping friction.

[0009] As a further optimization, the metal welding frame is connected to the inner cavity of the lower cover body frame by fixing screws. The inner wall of one side of the metal welding frame has a stepped shaft protruding into the inner cavity. The end of the stepped shaft away from the metal welding frame has a slot. After the cylinder of the gas spring passes through the stepped shaft, it is locked into the slot by a rotating shaft clip to limit and fix the cylinder.

[0010] As a further optimization, the metal swing arm includes a swing arm body, one side of which has a first rotating shaft. The end of the first rotating shaft near the swing arm body is a first round shaft that rotates and engages with the metal welding frame and the lower cover body frame. The end of the first round shaft away from the swing arm body has a first spline shaft that meshes with a first spline hole on the backrest frame assembly. The opposite sides of one end of the swing arm body have outwardly extending side arms. The opposite positions of the two side arms have first threaded through holes. The side arm near the metal welding frame has an outwardly protruding connecting platform. The second threaded through hole in the middle of the connecting platform communicates with the first threaded through hole on the side arm. The piston rod on the gas spring is inserted between the two side walls and is rotatably connected to the side arms by a gas spring fixing screw.

[0011] As a further optimization, the metal swing arm housing includes a housing with a shape similar to that of the metal swing arm component. The housing has a second spline hole and a third threaded through hole. The periphery of the end of the housing away from the gas spring has a flange that bends toward the metal swing arm component. The inner side of the flange has multiple limiting ribs.

[0012] As a further optimization, the first pivot is fixed by a metal spring after passing through the metal welding frame and the lower cover body frame, and then fixed by the first pivot screw after passing through the backrest frame assembly.

[0013] As a further optimization, the side of the lower cover body frame opposite to the metal swing arm is rotatably connected to the backrest frame assembly via a pivot bracket. The pivot bracket includes a bracket body, one side of which has a second pivot extending toward the backrest frame assembly. The end of the second pivot near the bracket body is a second round shaft that rotatably engages with the metal welding frame and the lower cover body frame. The end of the second round shaft opposite to the bracket body has a second spline shaft that meshes with a third spline hole on the backrest frame assembly. The second pivot passes through the metal welding frame and the lower cover body frame in sequence and is then limited and fixed by a second metal spring. After passing through the backrest frame assembly, it is fixed by a second pivot screw.

[0014] Advantages and beneficial effects of this utility model

[0015] 1. The damping mechanism in this utility model cleverly utilizes the unused space inside the lower cover body frame. Its movement stroke is restricted within the inner cavity of the lower cover body frame and is completely isolated from the movement area of ​​the backrest. Therefore, there is no trajectory intersection, and there is no need to design the backrest to avoid the external damping mechanism. This simplifies the design process and ensures the strength of the backrest.

[0016] 2. The damping mechanism in this utility model is a built-in damping mechanism set in the inner cavity of the lower cover body frame. Therefore, in the isolated state of the storage box and the frame, the damping noise after the gas spring is compressed or stretched can be reduced.

[0017] 3. The damping mechanism in this invention uses a gas spring for bidirectional damping. Since the gas spring itself is a gas-oil mixture, when the lower cover frame flips downwards, the piston rod in the gas spring is stretched and moves outwards relative to the cylinder. At this time, damping is mainly provided by the oil through the piston. When the piston moves, the oil is pressurized and needs to pass through the damping orifice on the piston, thus generating damping force. The viscosity and flow resistance of the oil allow for a smoother change in force, resulting in a more uniform and gradual opening speed for the handrail. When the lower cover frame flips upwards to close, the piston rod is gradually pressed back into the cylinder, compressing the gas inside. At this time, the gas plays the main assist role. After flipping upwards to a certain angle, it helps the handrail return to its original position and close.

[0018] 4. This utility model eliminates the original full-length pivot shaft located at the rear of the lower cover body frame. The pivot function is achieved by adding metal swing arms and pivot brackets on the left and right sides, allowing the lower cover body frame to flip up and down relative to the backrest frame assembly. The metal swing arms not only integrate the pivot function but also the connection function with the gas spring. Therefore, the overall structure is simpler, the internal space occupied by the lower cover body frame is reduced, and it will not affect the arrangement of the storage box. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the damping mechanism provided in this embodiment of the present invention installed inside the rear center armrest;

[0021] Figure 2 This is provided by the embodiment of the present utility model. Figure 1 Exploded view in the image;

[0022] Figure 3 This is a schematic diagram of the damping mechanism provided in this embodiment of the present invention installed inside the lower cover body frame;

[0023] Figure 4 This is a schematic diagram of the damping mechanism provided in this embodiment of the present invention mounted on a metal welding frame;

[0024] Figure 5 This is provided by the embodiment of the present utility model. Figure 4 Enlarged view of point A in the middle;

[0025] Figure 6 This is a schematic diagram of the damping mechanism provided in an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the other side of the damping mechanism provided in this embodiment of the utility model;

[0027] Figure 8 This is a structural schematic diagram of the metal swing arm component provided in this embodiment of the utility model;

[0028] Figure 9 This is a schematic diagram of the metal swing arm housing structure provided in an embodiment of this utility model.

[0029] Reference numerals: gas spring 1, cylinder 101, piston rod 102, pivot clip 2, lower cover body frame 3, metal welding frame 4, stepped shaft 41, metal swing arm 5, swing arm body 51, first pivot 52, first round shaft 521, first spline shaft 522, side arm 53, first threaded through hole 531, connecting platform 532, backrest frame assembly 6, first spline hole 61, metal swing arm housing 7, housing 71, second spline hole 72, third threaded through hole 73, flange 74, limiting rib 75, gas spring fixing screw 8, metal spring 9, and first pivot screw 10. Detailed Implementation

[0030] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein.

[0031] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", 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.

[0032] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 7 As shown, a damping mechanism built into the rear center armrest includes a gas spring 1 with bidirectional damping. The end of the cylinder 101 of the gas spring 1 is fixedly connected to a metal welding frame 4 added inside the lower cover body frame 3 via a pivot clip 2. The piston rod 102 in the gas spring 1 is rotatably connected to the front end of the metal swing arm 5. The rear end side of the metal swing arm 5 has a first pivot 52. The first pivot 52 passes through the metal welding frame 4 and the lower cover body frame 3 and is limited and fixed by a metal spring 9. It then passes through the backrest frame assembly 6 and is fixed by a first pivot screw 10. After connection, the metal welding frame 4 and the lower cover body frame 3 can rotate up and down relative to the metal swing arm 5 and the backrest frame assembly 6 around the first pivot 52.

[0033] The gas spring 1 is a gas-oil hybrid product. When the lower cover frame 3 flips downwards, the piston rod 102 in the gas spring 1 is stretched and moves outwards relative to the cylinder 101. At this time, damping is mainly provided by oil through the piston. This allows the rear center armrest to open more evenly and smoothly. When the lower cover frame 3 flips upwards to close, the piston rod is gradually pressed back into the cylinder, and the gas inside the cylinder is compressed, providing a buffering effect. At this time, the gas plays the main assist role. This prevents the rear center armrest from rebounding and resonating, and after flipping upwards to a certain angle, it helps the armrest return to its original position.

[0034] In this embodiment, the damping mechanism is connected to the inner cavity of the lower cover body frame 3 by an added metal welding frame 4. Since the lower cover body frame 3 is a plastic product, its own strength is insufficient to support the damping mechanism. The added metal welding frame 4 can increase the overall strength of the lower cover body frame 3 and the fixation of related matching parts such as the gas spring 1, and can effectively support the gas spring 1.

[0035] like Figures 3 to 5As shown, the metal welding frame 4 is connected to the inner cavity of the lower cover body skeleton 3 by fixing screws. The inner wall of one side of the metal welding frame 4 has a stepped shaft 41 protruding into the inner cavity. The end of the stepped shaft 41 away from the metal welding frame 4 has a groove. After the cylinder 101 of the gas spring 1 passes through the stepped shaft 41, the cylinder 101 is limited and fixed by inserting the rotating shaft card 2 into the groove.

[0036] like Figure 1 and Figure 8 As shown, the metal swing arm component 5 includes a swing arm body 51. The side of the swing arm body 51 near the metal welding frame 4 has a first rotating shaft 52. One end of the first rotating shaft 52 near the swing arm body 51 is a first round shaft 521 that rotatably engages with the metal welding frame 4 and the lower cover body frame 3. The end of the first round shaft 521 away from the swing arm body 51 has a first spline shaft 522 that meshes with a first spline hole 61 on the backrest frame assembly 6. The meshing of the first spline shaft 522 with the first spline hole 61 fixes the rotation direction of the first rotating shaft 52. The swing arm body 51 is located near the gas spring. The spring 1 has outwardly extending side arms 53 on opposite sides at one end. The opposite positions of the two side arms 53 have first threaded through holes 531. The side arm 53 near the metal welding frame 4 has an outwardly protruding connecting platform 532. The second threaded through hole in the middle of the connecting platform 532 communicates with the first threaded through hole 531 on the side arm 53. The piston rod 102 on the gas spring 1 is inserted between the two side walls 53. By inserting the gas spring fixing screw 8 into the first threaded through hole 531, the piston rod 102 and the second threaded through hole on the two side arms 53, the piston rod 102 is rotatably connected to the metal swing arm 5.

[0037] As a further optimization, to isolate the metal swing arm 5 from the metal welding frame 4, this embodiment adds a plastic metal swing arm housing 7 between them, such as... Figure 3 and Figure 9 As shown, the metal swing arm housing 7 covers the outside of the metal swing arm component 5, including a housing 71 with a similar shape to the metal swing arm component 5. The housing 71 has a second spline hole 72 that mates with the first rotating shaft 52 and a third threaded through hole 73 that mates with the connecting platform 532. The periphery of the end of the housing 71 away from the gas spring 1 has a flange 74 that bends towards the metal swing arm component 5, and the inner side of the flange 74 has multiple limiting ribs 75. By engaging with the connecting platform 532 through the third threaded through hole 73, the thread matching width can be increased, making the connection of the gas spring fixing screw 8 more secure and the locking force stronger.

[0038] When a metal swing arm housing 7 is added, the first pivot 52 on the metal swing arm 5 passes through the metal swing arm housing 7, the metal welding frame 4, and the lower cover body frame 3 in sequence, and is then limited and fixed by the metal spring 9. After passing through the backrest frame assembly 6, it is fixed by the pivot screw 10. The metal welding frame 4 and the lower cover body frame 3 can be flipped up and down relative to the metal swing arm housing 7 and the backrest frame assembly 6 through the first pivot 52. The metal swing arm housing 7 can prevent the lower cover body frame 3 from causing friction with the metal swing arm 5 and generating abnormal noise when it drives the metal welding frame 4 to rotate relative to the first pivot 52.

[0039] like Figure 1 As shown, the left side of the lower cover body frame 3 is rotatably connected to the backrest frame assembly 6 via a first pivot 52 on the metal swing arm 5, and the right side of the lower cover body frame 3 is rotatably connected to the backrest frame assembly 6 via a pivot bracket. By setting a separate rotatable connection, the space occupied inside the lower cover body frame 3 can be reduced, and the arrangement of the storage box will not be affected. The pivot bracket includes a bracket body, one side of which has a second pivot extending toward the backrest frame assembly 6. The end of the second pivot near the bracket body is a first round shaft that rotatably engages with the metal welding frame 4 and the lower cover body frame 3. The end of the first round shaft away from the bracket body has a second spline shaft that meshes with a third spline hole on the backrest frame assembly 6. The engagement of the second spline shaft with the third spline hole can fix the rotation direction of the second pivot shaft. The second pivot shaft passes through the metal welding frame 4 and the lower cover body frame 3 in sequence and is limited and fixed by a second metal spring. After passing through the backrest frame assembly 6, it is fixed by a second pivot screw.

[0040] By adjusting the air-fuel ratio or the size of the damping orifice, the speed at which the rear center armrest opens can be adjusted to ensure a smooth descent.

[0041] Work process

[0042] When the lower cover frame 3 opens downwards, the metal swing arm 5 and the metal swing arm housing 7 remain stationary relative to the backrest frame assembly 6. The lower cover frame 3 and the metal welded frame 4 rotate downwards around the first pivot 52 and the second pivot relative to the metal swing arm 5, the metal swing arm housing 7, and the backrest frame assembly 6. At this time, the piston rod 102 moves relative to the cylinder 101. When fully opened, the piston rod 102 extends the longest distance. During this process, damping is mainly provided by oil through the piston. This allows the rear center armrest to open more evenly and smoothly.

[0043] When the lower cover frame flips upward to close, the metal swing arm 5 and the metal swing arm housing 7 remain stationary relative to the backrest frame assembly 6. The lower cover frame 3 and the metal welded frame 4 rotate upward around the first pivot 52 and the second pivot relative to the metal swing arm 5, the metal swing arm housing 7 and the backrest frame assembly 6. At this time, the piston rod 102 is gradually pressed back into the cylinder 101. The gas compression has a buffering effect, which can prevent the rear center armrest from rebounding and resonating. After flipping upward to a certain angle, it will help the armrest to reset.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit them. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the present utility model.

Claims

1. A damping mechanism built into the rear center armrest, characterized in that: The device includes a gas spring (1) with bidirectional damping. The end of the cylinder (101) of the gas spring (1) is fixed to the metal welding frame (4) inside the lower cover body frame (3) via a pivot clip (2). The piston rod (102) in the gas spring (1) is rotatably connected to one end of a metal swing arm (5). The other end of the metal swing arm (5) has a first pivot (52). The first pivot (52) passes through the metal welding frame (4) and the lower cover body frame (3) and is connected to the backrest frame assembly (6). The metal welding frame (4) and the lower cover body frame (3) can rotate up and down relative to the backrest frame assembly (6) around the first pivot (52).

2. The rear center armrest built-in damping mechanism according to claim 1, characterized in that: A metal swing arm housing (7) is provided between the metal swing arm component (5) and the metal welding frame (4) to cooperate with the metal swing arm component (5).

3. The damping mechanism built into the rear center armrest according to claim 1, characterized in that: The metal welding frame (4) is connected to the inner cavity of the lower cover body frame (3) by fixing screws. The inner wall of one side of the metal welding frame (4) has a stepped shaft (41) protruding into the inner cavity. The end of the stepped shaft (41) away from the metal welding frame (4) has a slot. After the cylinder (101) of the gas spring (1) passes through the stepped shaft (41), it is locked into the slot by the rotating shaft card (2) to limit and fix the cylinder (101).

4. The rear center armrest built-in damping mechanism according to claim 1, characterized in that: The metal swing arm component (5) includes a swing arm body (51). One side of the swing arm body (51) has a first rotating shaft (52). The end of the first rotating shaft (52) near the swing arm body (51) is a first round shaft (521) that rotatably engages with the metal welding frame (4) and the lower cover body frame (3). The end of the first round shaft (521) away from the swing arm body (51) has a first spline shaft (522) that meshes with a first spline hole (61) on the backrest frame assembly (6). The end of the swing arm body (51) has... The two sides have outwardly extending side arms (53), and the relative positions of the two side arms (53) have first threaded through holes (531). The side arm (53) near the metal welding frame (4) has an outwardly protruding connecting platform (532). The second threaded through hole in the middle of the connecting platform (532) is connected to the first threaded through hole (531) on the side arm (53). The piston rod (102) on the gas spring (1) is inserted between the two side walls (53) and is rotatably connected to the side arm (53) by the gas spring fixing screw (8).

5. The rear center armrest built-in damping mechanism according to claim 2, characterized in that: The metal swing arm housing (7) includes a housing (71) similar in shape to the metal swing arm (5). The housing (71) has a second spline hole (72) and a third threaded through hole (73). The periphery of the end of the housing (71) away from the gas spring (1) has a flange (74) that bends toward the metal swing arm (5). The inner side of the flange (74) has multiple limiting ribs (75).

6. The rear center armrest built-in damping mechanism according to claim 1, characterized in that: The first pivot (52) passes through the metal welding frame (4) and the lower cover body frame (3) and is then fixed by the metal spring (9), and then passes through the backrest frame assembly (6) and is fixed by the first pivot screw (10).

7. The rear center armrest built-in damping mechanism according to claim 1, characterized in that: The lower cover body frame (3) is rotatably connected to the backrest frame assembly (6) on the side opposite to the metal swing arm (5) via a pivot bracket. The pivot bracket includes a bracket body, and one side of the bracket body has a second pivot extending toward the backrest frame assembly (6). The end of the second pivot near the bracket body is a second round shaft that rotatably engages with the metal welding frame (4) and the lower cover body frame (3). The end of the second round shaft away from the bracket body has a second spline shaft that meshes with the third spline hole on the backrest frame assembly (6). The second pivot passes through the metal welding frame (4) and the lower cover body frame (3) in sequence and is then limited and fixed by a second metal spring. After passing through the backrest frame assembly (6), it is fixed by a second pivot screw.

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