Automobile rear armrest locking mechanism
By simplifying the structure of the car rear armrest locking mechanism, and utilizing the cooperation between the stop shaft and the limit hole, as well as the design of the elastic element, the problems of complex and easily worn traditional armrest structures are solved, achieving stable support and long-life armrest operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-18
- Publication Date
- 2026-03-31
AI Technical Summary
The locking and unlocking mechanisms of traditional car rear armrests are complex and have many parts, making them prone to locking jams and abnormal noises. In addition, the damping blocks are prone to aging and may become unable to fold.
The simple structure of the car rear armrest locking mechanism includes a mounting bracket, a pivot, a stop pivot, a locking block, an elastic element, and an unlocking strap. The armrest can be folded and unfolded by the cooperation of the stop pivot and the limiting hole to avoid jamming, and the elastic element and unlocking strap ensure stability.
It achieves stable support and balanced force distribution of the handrail, reduces production costs, extends service life, has a simple structure and is easy to operate, and can meet the unlocking needs of passengers of different heights.
Smart Images
Figure CN224060879U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of automobile seat, specifically relates to a car rear row handrail locking mechanism. BACKGROUND
[0002] The car rear row handrail is a device for providing arm support, increasing comfort and convenience for passengers, which is usually hidden in the middle of the backrest of two independent seats in the second row (or the middle position of a three-seat bench). When in use, it can be folded down to open and form a platform between the two seats to realize arm support, cup holder placement and other functions.
[0003] Most conventional handrails use damping blocks to achieve folding or unfolding, but as the service life increases, the damping blocks will age, resulting in the inability to fold. In order to solve the above problems, handrail structures with locking function appear on the market, but the locking and unlocking mechanisms of common handrail structures are complex in structure, have many parts, and require high production and process requirements. If not handled properly, problems such as locking jamming, abnormal noise, etc. may occur. INVENTION CONTENTS
[0004] The utility model aims at solving the technical problems existing in the prior art, and particularly innovatively provides a car rear row handrail locking mechanism, which is simple in structure, uses fewer parts, and improves the support strength.
[0005] In order to achieve the above purpose, the utility model provides a car rear row handrail locking mechanism, which comprises mounting brackets arranged on the left and right sides of a handrail framework, the mounting brackets are fixed on the seat, the hinge part of the handrail framework is provided with a rotating shaft for rotating connection on the mounting brackets on both sides, an unlocking mechanism is arranged on the mounting bracket on any side, and the mounting bracket provided with the unlocking mechanism is referred to as an unlocking bracket; a stop shaft parallel to the rotating shaft is further arranged on the handrail framework relative to the rotating shaft, an arc-shaped limiting hole for swinging of the stop shaft is arranged on the unlocking bracket corresponding to the stop shaft, and one end of the stop shaft penetrates the handrail framework and extends into the limiting hole;
[0006] The unlocking mechanism comprises a locking block vertically rotating arranged on the left side or the right side of the unlocking bracket, the locking block is used for limiting the stop shaft in a section of the limiting hole relative to the end head to realize folding of the handrail framework, an elastic member is connected between one end of the locking block and the unlocking bracket, the other end of the locking block rotates and covers the limiting hole under the action of the elastic member, a positioning stop edge for abutting of the locking block is horizontally arranged on the unlocking bracket, an unlocking pull belt extending forward and backward is arranged on the locking block, the front end of the unlocking pull belt extends out of the shell of the handrail, and the unlocking pull belt is used for rotating the locking block to move away from the limiting hole.
[0007] In the above scheme: the other end of the stop shaft also passes through the mounting bracket, and the mounting bracket is provided with a clearance notch corresponding to the stop shaft, and when the handrail framework is rotated to the horizontal state, the stop shaft is just abutted in the clearance notch. The mounting bracket and the unlocking bracket on both sides can be supported, and the stress on both sides is more balanced, thereby ensuring the support stability of the handrail framework.
[0008] In the above scheme: the stop shaft is arranged at the end of the handrail framework, and the rotation point of the locking block is arranged behind the limiting hole, the top of one end of the locking block is provided with a protrusion, the top of the protrusion is located above the limiting hole, the top of the protrusion is provided with a mounting groove for mounting the unlocking pull belt, and the end of the unlocking pull belt is fixed in the mounting groove. The stop shaft is arranged at the end, and the locking block is arranged at the rear, i.e. the locking block is arranged outside the arc of the limiting hole, so that the stop shaft can be avoided from being stuck as much as possible, the arrangement is reasonable, and the space of the rear part of the unlocking bracket can be fully utilized.
[0009] In the above scheme: the side of the locking block for abutting against the stop shaft is a circular arc edge, and the center of the circular arc edge is the rotation point of the locking block. The rotation requirement is met, and the locking block cannot be stuck.
[0010] In the above scheme: the in-position blocking edge is arranged around the limiting hole.
[0011] In the above scheme: the mounting bracket and the unlocking bracket are provided with a horizontal pipe extending leftward and rightward, and the mounting bracket and the unlocking bracket are fixedly connected with the horizontal pipe, so that the support strength between the mounting bracket and the unlocking bracket is improved.
[0012] In conclusion, the beneficial effects of the utility model are as follows: only one horizontal rod, a locking block, an elastic member and an unlocking pull belt need to be arranged, compared with the traditional damper mode, the structure is simple, the cost is low, and the locking mechanism has a longer service life due to the fact that the damper is easy to wear. The stop rod in combination with the limiting hole can limit the rotation range and meet the conversion between the folding and use states of the handrail framework. The locking block can lock the stop rod and avoid the handrail framework from falling down after being rotated downward in the non-use state. The unlocking pull belt is arranged on the side of the handrail framework in combination with the hinge bracket, and the arrangement position is low, so that passengers with different heights can unlock. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 is a perspective view of the utility model.
[0014] Figure 2 is an exploded view of the utility model.
[0015] Figure 3 is a schematic view of the folding state of the handrail framework of the utility model.
[0016] Figure 4 is a schematic view of the handrail skeleton in the rotating process.
[0017] Figure 5 is a schematic view of the handrail skeleton rotating to the horizontal state. DETAILED DESCRIPTION
[0018] The utility model will be further described below by examples and in conjunction with drawings:
[0019] As Figures 1-5 shown, a kind of automobile rear row handrail locking mechanism, including the installation support 3 and unlocking bracket 2 of being arranged in n type handrail skeleton 1 left and right sides.The installation support 3 and unlocking bracket 2 are all fixed on seat, and the horizontal pipe 7 extending left and right is arranged between installation support 3 and unlocking bracket 2, and installation support 3 and unlocking bracket 2 are all fixedly connected with horizontal pipe 7, improve the support strength between installation support 3 and unlocking bracket 2.
[0020] One end of the two legs of handrail skeleton 1 is provided with hinged position, and hinge shaft 1a and stop shaft 1b are arranged in parallel between the two legs.The two ends of hinge shaft 1a are all stretched out to the outside of handrail skeleton 1 and are hinged to the installation support 3 and unlocking bracket 2 on both sides by hinge shaft 1a.The end of stop shaft 1b is arranged by the leg of handrail skeleton 1, and the two ends of stop shaft 1b are also stretched out to the two legs of handrail skeleton 1 outside.And unlocking bracket 2 is provided with the limiting hole 2a for swinging on the side away from handrail skeleton 1, and limiting hole 2a is arc-shaped.Locking block 6 is rotatably connected to unlocking bracket 2 by horizontally extending pin shaft on the side away from handrail skeleton 1 of unlocking bracket 2, and locking block 6 is used for locking block 6 for limiting stop shaft 1b in the section of limiting hole 2a close to end head, limit the swing range of stop shaft 1b, to realize the folding of handrail skeleton 1.Locking block 6 of this embodiment is arranged at the back side of limiting hole 2a, and is located outside the circle of limiting hole 2a arc-shaped.
[0021] One end of locking block 6 is connected with unlocking bracket 2, and the elastic member 4 of this embodiment is tension spring.The bottom end of elastic member 4 is fixed on the bottom side of unlocking bracket 2, and the top end of elastic member 4 is fixed on locking block 6.Another end of locking block 6 rotates under the action of elastic member 4 and covers on limiting hole 2a, and limiting hole 2a is provided with to-position stop edge 2b for locking block 6 to abut.And locking block 6 limits stop shaft 1b in the section of limiting hole 2a close to end head, limit the swing range of stop shaft 1b, to realize the folding of handrail skeleton 1.Locking block 6 is provided with front and back extending unlocking pull belt 5, and the front end of unlocking pull belt 5 is stretched out to the shell of handrail, and unlocking is carried out by pulling unlocking pull belt 5 and driving locking block 6 to rotate to leave limiting hole 2a, so that stop shaft 1b can rotate to another part of limiting hole 2a.
[0022] The top of one end of the elastic member 4 of the locking block 6 is provided with a protrusion, the top of the protrusion is above the limiting hole 2a, the unlocking pull belt 5 is installed on the protrusion, and the protrusion is further provided with a mounting groove for mounting the unlocking pull belt 5. The side of the locking block 6 for abutting against the stop shaft 1b is a circular arc edge 6b with the pin shaft as the center, meeting the rotation requirement and not being stuck.
[0023] In order to improve the support strength when the handrail framework 1 is rotated to the horizontal state, the other end of the stop shaft 1b also passes through the mounting bracket 3, the mounting bracket 3 is provided with a gap 3a corresponding to the stop shaft 1b, and the stop shaft 1b is just abutted in the gap 3a when the handrail framework 1 is rotated to the horizontal state. The left and right sides can be supported by the mounting bracket 3 and the unlocking bracket 2, the stress of the left and right sides is more balanced, and the support stability of the handrail framework 1 is ensured.
Claims
1. A rear seat armrest locking mechanism for a vehicle, comprising mounting brackets (3) arranged on the left and right sides of an armrest frame (1), the mounting brackets (3) being fixed to a seat, and the hinge portion of the armrest frame (1) being provided with a rotating shaft (1a) for rotatably connecting the mounting brackets (3) on the left and right sides, characterized in that: The unlocking mechanism is arranged on the mounting bracket (3) on either side, and the mounting bracket (3) provided with the unlocking mechanism is referred to as the unlocking bracket (2); the stop shaft (1b) parallel to the rotating shaft (1a) is further arranged on the handrail framework (1) near the rotating shaft (1a); the unlocking bracket (2) is provided with an arc-shaped limiting hole (2a) for swinging of the stop shaft (1b); one end of the stop shaft (1b) penetrates the handrail framework (1) and extends into the limiting hole (2a); The unlocking mechanism comprises a locking block (6) vertically arranged on the left side or the right side of the unlocking bracket (2); the locking block (6) is used for limiting the stop shaft (1b) in a section of the limiting hole (2a) near the end head to realize folding of the handrail framework (1); one end of the locking block (6) is connected with an elastic member (4) between the locking block (6) and the unlocking bracket (2); the other end of the locking block (6) rotates and covers the limiting hole (2a) under the action of the elastic member (4); the unlocking bracket (2) is horizontally provided with a position-limiting flange (2b) for abutting of the locking block (6); the locking block (6) is provided with a front-and-back extending unlocking pull belt (5); the front end of the unlocking pull belt (5) extends out of the shell of the handrail; the unlocking pull belt (5) is used for rotating the locking block (6) to move away from the limiting hole (2a).
2. The rear seat armrest locking mechanism of claim 1, wherein: The other end of the stop shaft (1b) also penetrates the mounting bracket (3); the mounting bracket (3) is provided with a gap (3a) corresponding to the stop shaft (1b); when the handrail framework (1) rotates to the horizontal state, the stop shaft (1b) abuts in the gap (3a).
3. The armrest locking mechanism of claim 1, wherein: The stop shaft (1b) is arranged near the end of the handrail framework (1); the rotating point of the locking block (6) is arranged behind the limiting hole (2a); the top of one end of the locking block (6) provided with the elastic member (4) is protrudingly provided with a protrusion; the top of the protrusion is located above the limiting hole (2a); the top of the protrusion is provided with a mounting groove (6a) for mounting the unlocking pull belt (5); the end of the unlocking pull belt (5) is fixed in the mounting groove (6a).
4. The rear seat armrest locking mechanism of claim 3, wherein: One side of the locking block (6) for abutting on the stop shaft (1b) is a circular arc edge (6b); and the center of the circular arc edge (6b) is the rotating point of the locking block (6).
5. The rear seat armrest locking mechanism of claim 1, wherein: The position-limiting flange (2b) is arranged around the limiting hole (2a).
6. The rear seat armrest locking mechanism of claim 1, wherein: The mounting bracket (3) and the unlocking bracket (2) are provided with a transverse pipe (7) extending leftward and rightward; the mounting bracket (3) and the unlocking bracket (2) are fixedly connected with the transverse pipe (7).