Armrest one-way locking mechanism

Abstract

The utility model relates to the technical field of armrest installation, and discloses an armrest one-way locking mechanism which comprises an installation shell assembly, a fixing hole, a shaft assembly and a rotary positioning assembly, and the installation shell assembly is composed of a mechanism support and a cover plate attached to one side of the outer portion of the mechanism support. Through the arrangement of the mounting shell assembly, the fixing hole, the shaft assembly and the rotary positioning assembly, the number of structures for mounting the handrail is small, so that in the process of connecting with the handrail, the structure for connecting the handrail needs a small space, and the structure is convenient to use. Therefore, the occupied area after the armrest and the seat are installed can be reduced to the maximum extent, in the process that the armrest can be provided for rotating and adjusting the position, the abuse force during manual operation of personnel is large, the operation force value is controllable, the gap value between the structures is small due to precise attachment between the structures, the internal structure is modularly machined, and the structure is more compact. And when damaged, the device can be conveniently and quickly disassembled and replaced, so that the use efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of handrail installation technology, specifically a one-way locking mechanism for handrails. Background Technology

[0002] A one-way locking mechanism for handrails is a device that uses a mechanical structure to lock and unlock handrails in one direction. When the handrail is subjected to downward pressure, the locking mechanism automatically locks the handrail to prevent it from accidentally sliding or moving; and when it is necessary to adjust the position of the handrail or to clean it, the handrail can be unlocked with a simple operation.

[0003] According to Chinese Publication No. CN222382892U, a rotating structure for a seat armrest support includes a fixed base and a fixed plate thereon. A rotating shaft is rotatably connected to the fixed plate. A rotating seat fixedly connected to the rotating shaft is located above the fixed plate. A connecting rod is vertically inserted through the rotating seat. A pressure plate is connected to the upper end of the connecting rod. An armrest support is provided on the pressure plate via an unlocking rod. A first elastic element is sleeved on the outside of the connecting rod. The upper and lower ends of the first elastic element abut or connect with the pressure plate and the rotating seat, respectively. A locking shaft located below the rotating seat is connected to the lower end of the connecting rod. The locking shaft is horizontally positioned. A slot is provided on the fixed plate at an eccentric position, which is slidably connected to the locking shaft. The slot includes an arc-shaped groove centered on the axis of the rotating shaft. Multiple locking slots are connected at equal intervals on the side of the arc-shaped groove away from the axis of the rotating shaft, which facilitates simple and flexible adjustment of the armrest support tilt angle, increasing the comfort and convenience of the seat.

[0004] After installing the armrests using the above structure, the distance between the connection points between the armrests and the seats will increase. This will increase the area occupied by the entire seat after the armrests are installed. As a result, when multiple sets of seats with armrests installed are arranged, the overall area will increase, leading to a reduction in the number of seats that can be placed in the same space. Utility Model Content

[0005] The purpose of this application is to provide a one-way locking mechanism for armrests to solve the problem mentioned in the background art that the arrangement of multiple sets of seats with armrests installed increases the overall area, resulting in a reduction in the number of seats that can be placed in the same area.

[0006] To achieve the above objectives, this application provides the following technical solution: a one-way locking mechanism for a handrail, comprising: a mounting housing assembly, fixing holes, a shaft assembly, and a rotation positioning assembly. The mounting housing assembly consists of a mechanism support and a cover plate attached to one side of the mechanism support. The mechanism support and the cover plate have the same top-view projection shape. The outer walls of the mechanism support and the cover plate are integrally formed with three sets of mounting plates having circular holes. The fixing holes are located on the outer walls of the mechanism support and the cover plate. The shaft assembly is located inside the fixing holes of the mechanism support and the cover plate. The rotation positioning assembly is located on the shaft assembly.

[0007] By adopting the above technical solution, the handrail can be adjusted in angle after installation, and the structures fit together tightly, thereby effectively reducing the area occupied.

[0008] Preferably, the fixing holes include a No. 1 hole respectively opened on one side of the same position on the outer wall of the mechanism support and the cover plate, a No. 2 hole respectively opened next to the No. 1 hole on the mechanism support and the cover plate, and a No. 3 hole respectively opened on the other side of the same position on the outer wall of the mechanism support and the cover plate.

[0009] By adopting the above technical solution, it is possible to achieve changes in the angle of the structure inside the hole.

[0010] Preferably, the fixing hole also includes a fourth hole located next to the third hole of the mechanism bracket, and a slot is provided on the inner wall of the fourth hole.

[0011] By adopting the above technical solution, one end of the spring can be locked and fixed.

[0012] Preferably, the shaft assembly includes a stop pin that is fitted into a first hole in the mechanism bracket and the cover plate via a stepped feature, the stop pin being welded to the outer wall of the mechanism bracket; a handrail fixing rotating shaft that is fitted into a second hole in the mechanism bracket and the cover plate via a stepped feature, the handrail fixing rotating shaft being rotatably disposed inside the second hole; one end of the handrail fixing rotating shaft having an integrally formed floral feature for connecting with the handrail; and a rotating shaft that is fitted into a third hole in the mechanism bracket and the cover plate via a stepped feature, the rotating shaft being rotatably disposed inside the third hole.

[0013] By adopting the above technical solution, it is possible to enable the externally mounted gear disk and irregularly shaped rack to rotate subsequently.

[0014] Preferably, the rotary positioning assembly includes a geared disc welded to the fixed rotating shaft of the handrail and a shaped rack welded to the rotating shaft. Both the geared disc and the shaped rack have punched holes on their outer walls. The shaped rack meshes with the geared disc, and the geared disc and the shaped rack are disposed inside the cavity formed by the mechanism support and the cover plate.

[0015] By adopting the above technical solution, the gear disk and the irregularly shaped rack can mesh with each other by rotating.

[0016] Preferably, the rotary positioning assembly further includes a spring whose two ends are respectively engaged and fixed in the punch holes of the No. 4 hole and the irregularly shaped rack, and an elastic damping block fixed in the punch hole of the gear plate. The two ends of the elastic damping block are respectively attached to the inner wall of the mechanism support and the cover plate.

[0017] By adopting the above technical solution, the spring force can be used to squeeze the toothed disc and the irregularly shaped rack, thus enabling them to mesh tightly.

[0018] In summary, this application offers the following advantages: by incorporating a mounting housing assembly, fixing holes, a shaft assembly, and a rotation positioning assembly, the number of structures for armrest installation is reduced, minimizing the space required for the armrest connection itself during connection. This minimizes the area occupied by the armrest and seat after installation. Furthermore, the armrest's position can be adjusted manually with controlled force. Precise fit between structures results in minimal gaps, and the modular internal structure allows for easy and quick disassembly and replacement in case of damage, improving its usability. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of this application;

[0020] Figure 2 This is a three-dimensional cross-sectional structural diagram of this application;

[0021] Figure 3 This is a schematic diagram of the three-dimensional unfolded structure of this application;

[0022] Figure 4 This is a three-dimensional structural diagram of the shaft assembly and rotary positioning assembly of this application.

[0023] In the diagram: 1. Housing assembly; 101. Mechanism bracket; 102. Cover plate; 2. Fixing holes; 201. Hole No. 1; 202. Hole No. 2; 203. Hole No. 3; 204. Hole No. 4; 3. Shaft assembly; 301. Stop pin; 302. Handrail fixing rotating shaft; 303. Rotating shaft; 4. Rotary positioning assembly; 401. Gear plate; 402. Irregular rack; 403. Spring; 404. Elastic damping block. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] The following is in conjunction with the appendix Figure 1-4 The embodiments of this application will be described in further detail.

[0026] Example 1

[0027] Please see Figures 1-4 This embodiment provides a technical solution: a one-way locking mechanism for a handrail, comprising: a mounting housing assembly 1, a fixing hole 2, a shaft assembly 3, and a rotation positioning assembly 4;

[0028] The mounting housing assembly 1 consists of a mechanism bracket 101 and a cover plate 102 that fits onto the outside of the mechanism bracket 101. The mechanism bracket 101 and the cover plate 102 have the same top-view projection shape. The outer walls of the mechanism bracket 101 and the cover plate 102 are integrally formed with three sets of mounting plates with round holes. Fixing holes 2 are provided on the outer walls of the mechanism bracket 101 and the cover plate 102. The shaft assembly 3 is provided inside the fixing holes 2 of the mechanism bracket 101 and the cover plate 102. The rotation positioning assembly 4 is provided on the shaft assembly 3.

[0029] The armrest is installed on the shaft assembly 3. The mechanism bracket 101 of the housing assembly 1 and the cover plate 102 are fixed to the outer sides of the seat with bolts. The shaft assembly 3 can provide the armrest to change angle through the fixing hole 2 opened in the housing assembly 1. During the rotation of the armrest through the shaft assembly 3, it can be positioned to the specified angle by rotating the positioning assembly 4.

[0030] Example 2

[0031] Please see Figures 1-4 This embodiment provides a technical solution: a one-way locking mechanism for a handrail, comprising: a first hole 201, a second hole 202, a third hole 203, a fourth hole 204, a stop pin 301, a handrail fixing rotation shaft 302, a rotating shaft 303, a gear plate 401, a special-shaped rack 402, a spring 403, and an elastic damping block 404;

[0032] The fixing hole 2 includes a first hole 201 opened on one side of the outer wall of the mechanism support 101 and the cover plate 102 at the same position, a second hole 202 opened next to the first hole 201 of the mechanism support 101 and the cover plate 102, a third hole 203 opened on the other side of the outer wall of the mechanism support 101 and the cover plate 102 at the same position, and a fourth hole 204 opened next to the third hole 203 of the mechanism support 101. A slot is provided on the inner wall of the fourth hole 204.

[0033] The shaft assembly 3 includes a stop pin 301, which is assembled in the first hole 201 of the mechanism bracket 101 and the cover plate 102 through a step feature. The stop pin 301 is welded to the outer wall of the mechanism bracket 101. The handrail fixing rotating shaft 302 is assembled in the second hole 202 of the mechanism bracket 101 and the cover plate 102 through a step feature. The handrail fixing rotating shaft 302 is rotatably disposed inside the second hole 202. One end of the handrail fixing rotating shaft 302 is integrally formed with a floral feature for connecting with the handrail. The rotating shaft 303 is assembled in the third hole 203 of the mechanism bracket 101 and the cover plate 102 through a step feature. The rotating shaft 303 is rotatably disposed inside the third hole 203.

[0034] The rotary positioning assembly 4 includes a geared disc 401 welded to the fixed rotating shaft 302 of the handrail and a shaped rack 402 welded to the rotating shaft 303. Both the geared disc 401 and the shaped rack 402 have punched holes on their outer walls. The shaped rack 402 meshes with the geared disc 401. The geared disc 401 and the shaped rack 402 are located inside the cavity formed by the mechanism support 101 and the cover plate 102. The two ends of the spring 403 are respectively engaged and fixed in the punched holes of the fourth hole 204 and the shaped rack 402, and the elastic damping block 404 is fixed in the punched holes of the geared disc 401. The two ends of the elastic damping block 404 are respectively attached to the inner walls of the mechanism support 101 and the cover plate 102.

[0035] The stop pin 301 can be inserted into the first hole 201 of the mechanism bracket 101 and the cover plate 102, thereby fixing the rotating shaft 302 of the handrail and connecting the gear plate 401 to rotate in the second hole 202. During this process, one end of the gear plate 401 is limited by the stop pin 301. Furthermore, during the rotation of the gear plate 401, the elastic damping block 404 increases the friction between the gear plate 401 and the inner wall of the mechanism bracket 101 and the cover plate 102, preventing excessive sensitivity during rotation. When counter-rotation is required... When the rotating gear 401 is positioned at a specified angle, the rotating shaft 303 changes angle through the mechanism bracket 101 and the third hole 203 of the cover plate 102. This allows the irregularly shaped rack 402 on the rotating shaft 303 to be squeezed by the spring 403 in the slot of the fourth hole 204, thereby making the irregularly shaped rack 402 mesh with the gear 401, which serves to position the gear 401 when it rotates. The shape of the irregularly shaped rack 402 can also limit the other end of the gear 401 when it rotates.

[0036] The implementation principle of the one-way locking mechanism for handrails in this application is as follows:

[0037] First, the armrest is installed on the shaft assembly 3. The mechanism bracket 101 of the housing assembly 1 and the cover plate 102 are fixed to the outer sides of the seat with bolts. The shaft assembly 3 can provide the armrest to change angle through the fixing hole 2 opened in the housing assembly 1. During the rotation of the armrest through the shaft assembly 3, it can be positioned to the specified angle by rotating the positioning assembly 4.

[0038] Secondly, the stop pin 301 can be inserted into the first hole 201 of the mechanism bracket 101 and the cover plate 102, so that when the handrail fixing rotating shaft 302 connects the gear plate 401 to rotate in the second hole 202, one end of the gear plate 401 is limited by the stop pin 301. And when the gear plate 401 rotates, the elastic damping block 404 can increase the friction with the inner wall of the mechanism bracket 101 and the cover plate 102, so as to avoid excessive sensitivity during rotation.

[0039] Finally, when it is necessary to position the rotating gear 401 at a specified angle, the rotating shaft 303 changes angle through the mechanism bracket 101 and the third hole 203 of the cover plate 102. This allows the irregularly shaped rack 402 on the rotating shaft 303 to be squeezed by the spring 403 in the slot of the fourth hole 204, thereby making the irregularly shaped rack 402 mesh with the gear 401, which positions the gear 401 when it rotates. The shape of the irregularly shaped rack 402 can also limit the other end of the gear 401 when it rotates.

[0040] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A one-way locking mechanism for a handrail, characterized in that, include: The mounting housing assembly (1) consists of a mechanism bracket (101) and a cover plate (102) attached to the outside of the mechanism bracket (101). The mechanism bracket (101) and the cover plate (102) have the same top projection shape. The outer walls of the mechanism bracket (101) and the cover plate (102) are integrally formed with three sets of mounting plates with round holes. Fixing hole (2), the fixing hole (2) is provided on the outer wall of the mechanism support (101) and the cover plate (102); Shaft assembly (3), the shaft assembly (3) is disposed inside the fixing hole (2) of the mechanism bracket (101) and the cover plate (102); A rotary positioning component (4) is disposed on the shaft assembly (3).

2. The handrail one-way locking mechanism according to claim 1, characterized in that: The fixing holes (2) include a first hole (201) opened on one side of the outer wall of the mechanism support (101) and the cover plate (102) at the same position, a second hole (202) opened on one side of the first hole (201) of the mechanism support (101) and the cover plate (102), and a third hole (203) opened on the other side of the outer wall of the mechanism support (101) and the cover plate (102) at the same position.

3. The handrail one-way locking mechanism according to claim 2, characterized in that: The fixing hole (2) also includes a fourth hole (204) located next to the third hole (203) of the mechanism bracket (101), and a slot is provided on the inner wall of the fourth hole (204).

4. The handrail one-way locking mechanism according to claim 1, characterized in that: The shaft assembly (3) includes a stop pin (301) which is fitted into the first hole (201) of the mechanism bracket (101) and the cover plate (102) through a step feature. The stop pin (301) is welded to the outer wall of the mechanism bracket (101). The handrail fixing rotating shaft (302) is fitted into the second hole (202) of the mechanism bracket (101) and the cover plate (102) through a step feature. The handrail fixing rotating shaft (302) is rotatably disposed inside the second hole (202). One end of the handrail fixing rotating shaft (302) is integrally formed with a floral feature for connecting with the handrail. The rotating shaft (303) is fitted into the third hole (203) of the mechanism bracket (101) and the cover plate (102) through a step feature. The rotating shaft (303) is rotatably disposed inside the third hole (203).

5. A one-way locking mechanism for a handrail according to claim 1, characterized in that: The rotary positioning assembly (4) includes a gear disk (401) welded to the fixed rotating shaft (302) of the handrail and a special-shaped rack (402) welded to the rotating shaft (303). The outer walls of the gear disk (401) and the special-shaped rack (402) are both provided with punch holes. The special-shaped rack (402) meshes with the gear disk (401), and the gear disk (401) and the special-shaped rack (402) are arranged inside the cavity formed by the mechanism support (101) and the cover plate (102).

6. A one-way locking mechanism for a handrail according to claim 5, characterized in that: The rotary positioning assembly (4) also includes a spring (403) whose two ends are respectively engaged and fixed in the punch holes of the fourth hole (204) and the irregular rack (402), and an elastic damping block (404) fixed in the punch hole of the gear plate (401). The two ends of the elastic damping block (404) are respectively attached to the inner wall of the mechanism bracket (101) and the cover plate (102).

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