CN219125779U

CN219125779U - Lockable angle adjusting mechanism

Info

Publication number: CN219125779U
Application number: CN202223554745.1U
Authority: CN
Inventors: 应宝
Original assignee: Yongkang Xuanqi Hardware Stamping Factory
Current assignee: Yongkang Xuanqi Hardware Stamping Factory
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-06-06
Anticipated expiration: 2032-12-30

Abstract

The application discloses a lockable angle adjusting mechanism, which comprises a first rotating piece and a second rotating piece which are connected with each other in a rotating way; the first rotating piece is provided with a circular rotating part and a ratchet formed on the circular rotating part; the second rotating piece is rotatably provided with a self-return pawl, and the pawl is kept engaged with the ratchet; the second rotating piece is also provided with a movable limiting push block; when the limiting push block is positioned at the first position, the pawl is pressed and the circular rotating part is kept to be unable to rotate; when the limiting push block is positioned at the second position, the pressing of the pawl is released, and the pawl can deflect at intervals to enable the round rotating part to rotate so as to adjust the relative angle of the first rotating piece and the second rotating piece.

Description

Lockable angle adjusting mechanism

Technical Field

The application relates to the field of hardware connectors, in particular to a lockable angle adjusting mechanism.

Background

Many reclining chairs, exercise equipment, etc. are currently often used for the back angle adjustment mechanism. Taking a reclining chair as an example, the existing angle adjusting mechanisms mainly comprise the following two types: the angle can be adjusted at will after the unlocking switch is operated, but the reclining chair is required to be separated from the reclining chair for operation, so that the reclining chair cannot be adjusted to the most comfortable angle in a lying state; the second type is a unidirectional angle adjustment mechanism, such as the structure shown in publication CN218008950U, which can adjust the angle from low to high without leaving the reclining chair, and can adjust the angle to the highest limit position at a time and place the angle to the lowest position at a time, and this type of adjustment mechanism has a great limitation, and when the angle is adjusted to a certain comfortable angle, a great action on the reclining chair may cause the angle to jump.

Disclosure of Invention

Aiming at the defects of the prior art, the application provides a lockable angle adjusting mechanism which can effectively solve the technical problems.

The technical scheme adopted for solving the technical problems is as follows: a lockable angle adjusting mechanism comprises a first rotating piece and a second rotating piece which are connected with each other in a rotating way; the first rotating piece is provided with a circular rotating part and a ratchet formed on the circular rotating part; the second rotating piece is rotatably provided with a self-return pawl, and the pawl is kept engaged with the ratchet; the second rotating piece is also provided with a movable limiting push block; when the limiting push block is positioned at the first position, the pawl is pressed and the circular rotating part is kept to be unable to rotate; when the limiting push block is positioned at the second position, the pressing of the pawl is released, and the pawl can deflect at intervals to enable the round rotating part to rotate so as to adjust the relative angle of the first rotating piece and the second rotating piece.

In the above technical scheme, further, be provided with first pivot in the second rotates the piece, the pawl cover is established in first pivot, still overlap in the first pivot and be equipped with the torsional spring, the one end of torsional spring supports and leans on the second rotates the piece, and the other end supports and leans on the pawl in order to drive pawl and ratchet keep meshing.

In the above technical scheme, further, a second rotating shaft is arranged in the second rotating member, an elastic return member is sleeved on the second rotating shaft, the other end of the elastic return member is fixed on the limiting push block, and the elastic return member provides a biasing force of an extreme position; the elastic return piece in the initial state provides a force for pushing the limit push block in the first direction; when the limit pushing block moves from the first position to the second position and passes through the limit position, the elastic return piece provides a force for pushing the limit pushing block to the second direction, and the second direction is opposite to the first direction.

In the above technical solution, further, the limiting push block includes a push button, a sliding connection portion, and a pressing portion; the sliding connection part is arranged on the sliding groove of the second rotating piece in a sliding way, and the push button is arranged outside the second rotating piece; the pressing part is arranged in the second rotating piece and is used for pressing the pawl and fixing the elastic return piece.

In the above technical scheme, further, the elastic return member is a double-jump torsion spring.

In the above technical scheme, further, the relative width of the push button and the pressing part is larger than the chute.

In the above technical scheme, further, the first rotating member and the second rotating member are in rotational connection through a third rotating shaft, and the circular rotating portion rotates around the third rotating shaft.

In the above technical solution, further, two pieces of the circular rotating portion are disposed at intervals and are respectively close to two inner walls of the second rotating member; control pieces are arranged between the two round rotating parts which are arranged at intervals, and are connected with the round rotating parts and rotate along with the round rotating parts.

The beneficial effects of this application lie in: the limiting push block is added on the existing adjusting mechanism, the angle adjustment can be limited in any state in the middle of the angle adjusting mechanism, the angle of the reclining chair is adjusted to a comfortable position in a lying way, and the limiting push block is locked by lifting the reclining chair, so that the comfortable position can be stably reserved; meanwhile, the limit pushing block has no influence on the existing mechanism in a non-working state; the driving force of the limiting push block in different directions is further provided through a double-jump torsion spring, so that the operation is more convenient.

Drawings

The present application is further described below with reference to the drawings and examples.

Fig. 1 is a schematic view of the outline structure of the present application.

Fig. 2 is a schematic view of another angular profile configuration of the present application.

Fig. 3 is a schematic view of the internal structure of the present application.

Fig. 4 is a schematic view of the internal structure of another state of the present application.

Fig. 5 is a schematic structural view of the hidden second rotating member of the present application.

In the figure, 1 a first rotating member, 2 a second rotating member, 21 a chute, 3 a circular rotating portion, 31 a ratchet, 4 a first rotating shaft, 5 a second rotating shaft, 6 a third rotating shaft, 7 a pawl, 8 a torsion spring, 9 a limit push block, 91 a push button, 911 an arrow mark, 92 a sliding connection portion, 93 a pressing portion, S1 a first direction, S2 a second direction, 10 a resilient return member, 11 a control plate.

Detailed Description

1-5, a lockable angle adjustment mechanism may be used with products including, but not limited to, lounge chairs, exercise equipment, and the like. The device specifically comprises a first rotating member 1 and a second rotating member 2 which are in rotating connection through a third rotating shaft 6, wherein the outer ends of the first rotating member 1 and the second rotating member 2 (namely, the non-rotating connection ends are connection ends, such as a cushion, a backrest and the like, which are respectively connected). The inner end of the first rotating member 1 is formed with a circular rotating portion 3, and the circular rotating portion 3 is provided with two pieces at intervals, which are respectively close to two inner walls of the second rotating member 2. The ratchet 31 is arranged on a part of the arc surface of the circular rotating part 3, the first rotating shaft 4 is arranged in the second rotating part 2, the first rotating shaft 4 is sleeved with the pawl 7, meanwhile, the first rotating shaft 4 is sleeved with the torsion spring 8, one end of the torsion spring 8 is abutted against the second rotating part 2, the other end of the torsion spring 8 is abutted against the pawl 7 to drive the end part of the pawl 7 to be meshed with the ratchet 31 on the circular rotating part 3, so that when the first rotating part 1 rotates around the second rotating part 5 relative to the second rotating part 2, the pawl 7 can intermittently spring against the acting force of the torsion spring 8, and the ratchet 31 can rotate, namely, the pawl 7 can intermittently deflect to enable the circular rotating part 3 to rotate.

In order to lock the angle adjusting mechanism, incorrect deflection is avoided. A slidable limit push block 9 is further arranged on the second rotating member 2, the limit push block 9 can slide back and forth along a first direction S1 or a second direction S2 opposite to the first direction, and when the limit push block 9 is in a first position (as shown in fig. 3), the limit push block 9 will press against the pawl 7 and keep the circular rotating portion 3 unable to rotate; when the limit push block 9 is in the second position (as shown in fig. 4), the pressing of the pawl 7 will be released, and the pawl 7 can intermittently spring against the acting force of the torsion spring 8, so that the ratchet 31 can normally rotate. In order to facilitate the operation, a second rotating shaft 5 is further arranged in the second rotating member 2, an elastic return member 10 is sleeved on the second rotating shaft 5, the other end of the elastic return member 10 is fixed on the limiting push block 9, and the elastic return member 10 provides a biasing force at a limiting position; in the initial state (the state shown in fig. 3), the elastic return member 10 provides a force pushing the limit push block 9 in the first direction S1; when the limit push block 9 moves from the first position to the second position beyond the limit position, the elastic return member 10 will provide a force pushing the limit push block 9 in a second direction S2, the second direction S2 being opposite to the first direction S1. Specifically, the limiting push block 9 includes a push button 91, a sliding connection portion 92, and a pressing portion 93; the sliding connection part 92 is slidably arranged on the sliding groove 21 of the second rotating member 2, and the push button 91 is arranged outside the second rotating member 2; the pressing part 93 is disposed inside the second rotating member 2 and is used for pressing the pawl 7 and fixing the elastic return member 10. Wherein, the elastic return element 10 is selected as a double-jump torsion spring. Meanwhile, the relative widths of the push button 91 and the pressing portion 93 are slightly larger than the width of the chute 21, so as to prevent the limit push block 9 from shaking and falling out. For convenience of use, on the push button 91 of the limit push block 9, an arrow mark 911 for indicating the first direction and the second direction is provided.

In order to realize the reset of angle adjustment mechanism one-way step by step after angle adjustment, still be provided with control piece 11, control piece 11 installs on third pivot 6 to be placed between two circular rotation parts 3, the side of control piece 11 is fashioned respectively has pushing part one, idle stroke portion one, is used for pushing cam's working portion, spacing portion, idle stroke portion two and pushing part two, spacing portion is located one side of working portion, the shaping has idle stroke portion two between pushing part one and the pushing part two, is provided with in the circular rotation part and is used for promoting control piece pivoted pushing block. For the specific structure of the control sheet and its implementation, the structure of the prior art may be specifically referred to the patent of publication CN218008950U proposed by the applicant, and will not be described herein in detail.

The foregoing description is only a preferred embodiment of the present application and is not intended to limit the present application in any way, and simple modifications, equivalent changes or modifications can be made without departing from the technical solutions of the present application, all falling within the scope of the present application.

Claims

1. A lockable angle adjusting mechanism comprises a first rotating piece and a second rotating piece which are connected with each other in a rotating way; the first rotating piece is provided with a circular rotating part and a ratchet formed on the circular rotating part; the second rotating piece is rotatably provided with a self-return pawl, and the pawl is kept engaged with the ratchet; the device is characterized in that the second rotating piece is also provided with a movable limiting push block; when the limiting push block is positioned at the first position, the pawl is pressed and the circular rotating part is kept to be unable to rotate; when the limiting push block is positioned at the second position, the pressing of the pawl is released, and the pawl can deflect at intervals to enable the round rotating part to rotate so as to adjust the relative angle of the first rotating piece and the second rotating piece.

2. The lockable angle adjustment mechanism of claim 1, wherein the second rotating member is provided with a first rotating shaft, the pawl is sleeved on the first rotating shaft, the first rotating shaft is further sleeved with a torsion spring, one end of the torsion spring abuts against the second rotating member, and the other end abuts against the pawl to drive the pawl to be kept engaged with the ratchet.

3. The lockable angle adjusting mechanism of claim 1, wherein a second rotating shaft is arranged in the second rotating member, an elastic return member is sleeved on the second rotating shaft, the other end of the elastic return member is fixed on the limiting push block, and the elastic return member provides a biasing force of a limiting position; the elastic return piece in the initial state provides a force for pushing the limit push block in the first direction; when the limit pushing block moves from the first position to the second position and passes through the limit position, the elastic return piece provides a force for pushing the limit pushing block to the second direction, and the second direction is opposite to the first direction.

4. A lockable angle adjustment mechanism according to claim 3, characterized in that the limit push block comprises a push button, a sliding connection part and a pressing part; the sliding connection part is arranged on the sliding groove of the second rotating piece in a sliding way, and the push button is arranged outside the second rotating piece; the pressing part is arranged in the second rotating piece and is used for pressing the pawl and fixing the elastic return piece.

5. A lockable angle adjustment mechanism according to claim 3 or 4, characterized in that the elastic return member is a double-jump torsion spring.

6. The lockable angle adjustment mechanism of claim 4, wherein the push button and the abutment have a relative width greater than the chute.

7. The lockable angle adjustment mechanism of claim 1, wherein the first rotational member is rotatably coupled to the second rotational member via a third rotational axis about which the circular rotational portion rotates.

8. The lockable angle adjustment mechanism of claim 7, wherein the circular rotating portion is provided with two pieces at intervals, each piece being adjacent to two inner walls of the second rotating member; control pieces are arranged between the two round rotating parts which are arranged at intervals, and are connected with the round rotating parts and rotate along with the round rotating parts.