CN114098282A

CN114098282A - One-way locking mechanism and desk applying same

Info

Publication number: CN114098282A
Application number: CN202111324693.6A
Authority: CN
Inventors: 刘阳波; 许连平; 安硕
Original assignee: Suspa Nanjing Vibration Damping System Co ltd
Current assignee: Suspa Nanjing Vibration Damping System Co ltd
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2022-03-01

Abstract

The invention discloses a one-way locking mechanism, comprising: the installation seat, the ratchet wheel installed on the installation seat and the small ratchet wheel, wherein at least part of the circumferential direction of the ratchet wheel is provided with the ratchet wheel meshed with the small ratchet wheel, the installation seat is also internally provided with a sliding block and a cam mechanism, the sliding block is installed between the small ratchet wheel and the cam mechanism, when the cam mechanism rotates towards a first direction, a first acting force can be generated on the sliding block to enable the sliding block to drive the small ratchet wheel to move towards a direction close to the ratchet wheel, and the small ratchet wheel is meshed with the ratchet wheel to realize the locking of the relative position of the small ratchet wheel and the ratchet wheel; the cam mechanism rotates towards the second direction, force opposite to the first acting force can be generated on the sliding block, so that the sliding block drives the small ratchet to move towards the direction far away from the ratchet wheel, the small ratchet is disengaged from the ratchet wheel, unlocking of the relative position of the small ratchet and the ratchet wheel is realized, the first direction is opposite to the second direction, and the one-way locking mechanism can realize adjustment and locking of various angles.

Description

One-way locking mechanism and desk applying same

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of locking mechanisms, in particular to a one-way locking mechanism.

[ background of the invention ]

In the current society, along with the enhancement of consciousness of people on healthy growth of children, more and more parents can provide the desk with the function of overturning the desk plate for children so as to meet different use scenes such as writing, reading books, drawing and the like of the children. Based on the use scenes, the angle adjusting structure of the movable table plate is required to be stable and reliable in support, and the adjusting angle needs to be selected according to needs, but the angle selection of the adjusting structure of the movable table plate in the current market has limitations, only a specific angle can be selected, and the requirements of various use scenes of children cannot be met.

Therefore, it is desirable to provide a one-way locking mechanism that solves the above problems.

[ summary of the invention ]

Aiming at the problems in the prior art, the invention needs a locking mechanism which can realize adjustment and locking of various angles.

In order to solve the above problem, the present invention provides a one-way lock mechanism including: the installation seat, the ratchet wheel installed on the installation seat and the small ratchet wheel, wherein at least part of the circumferential direction of the ratchet wheel is provided with the ratchet wheel meshed with the small ratchet wheel, the installation seat is also internally provided with a sliding block and a cam mechanism, the sliding block is installed between the small ratchet wheel and the cam mechanism, when the cam mechanism rotates towards a first direction, a first acting force can be generated on the sliding block to enable the sliding block to drive the small ratchet wheel to move towards a direction close to the ratchet wheel, and the small ratchet wheel is meshed with the ratchet wheel to realize the locking of the relative position of the small ratchet wheel and the ratchet wheel; the cam mechanism rotates towards the second direction, force opposite to the first acting force can be generated on the sliding block, so that the sliding block drives the small ratchet to move towards the direction far away from the ratchet wheel, the small ratchet is disengaged from the ratchet wheel, unlocking of the relative position of the small ratchet and the ratchet wheel is achieved, and the first direction is opposite to the second direction.

Furthermore, a slide way for sliding the sliding block is arranged in the mounting seat.

Furthermore, the cam mechanism is provided with a second end, the second end is connected with an operation assembly, and the operation assembly is operated to enable the cam mechanism to rotate towards the second direction.

Further, the operating component comprises a linkage connecting piece and an operating part, the linkage connecting piece is connected between the second end of the cam mechanism and the operating part, and the operating part is arranged to be pressed to drive the cam mechanism to rotate towards the second direction under the action of the linkage connecting piece.

Further, the ratchet wheel is rotatably arranged in the mounting seat, and the mounting seat can rotate around the ratchet wheel with the small ratchet, the sliding block and the cam mechanism.

Further, a wedge-shaped space is arranged between the sliding block and the ratchet wheel, and the small ratchet is elastically preloaded towards the wedge-shaped space.

Further, a first elastic element and a second elastic element are arranged in the mounting seat, and the first elastic element biases the cam mechanism and rotates towards the first direction.

Further, the cam mechanism and the slider are connected through a second connecting structure, the second connecting structure comprises a clamping part and a clamping matching part, the clamping part and the clamping matching part can be clamped and matched and clamped and separated, when the cam mechanism rotates towards the first direction, the clamping part is separated from the clamping matching part, and when the cam mechanism rotates towards the second direction, the clamping part is clamped and matched with the clamping matching part.

Furthermore, the sliding block is connected with the small ratchet through a first connecting structure, the first connecting structure comprises a protrusion and a groove, the protrusion is matched with the groove, so that the protrusion applies an acting force to the groove, and the sliding block drives the small ratchet to move in a direction away from the ratchet.

Furthermore, when the angle between the movable table plate and the table frame is locked, the small ratchet is meshed with the ratchet wheel, the sliding block tends to slide in the direction of the cam mechanism, and the position of the sliding block is locked due to the fact that the second end of the cam mechanism is matched with the sliding block to achieve self-locking.

In order to solve the above problem, the present invention also provides a table using the one-way locking mechanism as described in any of the above, comprising: the table frame and for table frame rotatable coupling's movable table, one-way locking mechanical system can to movable table with rotation angle between the table frame locks, the table frame with still be connected with damping mechanism between the movable table, damping mechanism one end is connected with the table frame, and the other end is connected with movable table.

Furthermore, the locking mechanism in the scheme of the invention has the following advantages:

(1) the adjustable number of stages is multiple, and within the adjusting range of 0-90 degrees, the number of stages is about 20-50 (namely, the number of ratchets is set according to the number of stages), so that the use requirements of different angles of children can be met;

(2) the small angle can be rigidly locked, and the movable table plate cannot shake;

(3) the unlocking handle can be placed on one side of the movable table board close to a person as required, and the operation is convenient and safe;

(4) in the process of turning up the movable table top, no damping force is generated, an operating handle is not required to be pressed, the movable table top can be directly turned up, and the movable table top can be locked after being turned up to any position and stopped; when the unlocking is needed, the handle is pressed, the desktop slowly descends, and the user experience is greatly optimized.

[ description of the drawings ]

FIG. 1 is a schematic view of the construction of the one-way locking mechanism of the present invention.

Fig. 2 is a partial exploded view of the mount of the present invention.

FIG. 3(a) is a schematic structural view of a one-way locking mechanism in the process of opening the table of the present invention; FIG. 3(b) is a schematic structural view of the one-way locking mechanism of the present invention in a locked state; fig. 3(c) is a schematic structural view of the one-way locking mechanism of the present invention in an unlocked state.

Fig. 4 is a schematic structural view of the movable table board of the invention when opened.

FIG. 5 is another schematic diagram of the structure of FIG. 4 according to the present invention.

[ detailed description ] embodiments

The directional terms of the present invention, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", etc., are only directions in the drawings, and are only used to explain and illustrate the present invention, but not to limit the scope of the present invention.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 5, the table of the present invention includes a table frame 11, a movable table 12 movably connected to the table frame 11, and a locking mechanism connected between the table frame 11 and the movable table 12. A damping mechanism 8 is further connected between the table frame 11 and the movable table plate 12, the damping device 8 comprises a piston rod 81 and a cylinder 82, the piston rod 81 can reciprocate in the movable cylinder and generate damping force, the damping mechanism is a linear damper, damping can be generated in the process that the piston rod retracts into the cylinder, and no damping is generated in the process that the piston rod is pulled out of the cylinder.

The locking mechanism is a one-way locking mechanism, the one-way locking mechanism 10 comprises a ratchet wheel 1 and small ratchet teeth 2 which can rotate in the circumferential direction of the ratchet wheel 1 and are meshed with the ratchet wheel 1, and the ratchet wheel 1 is provided with ratchet teeth in the circumferential direction and can be meshed with the small ratchet teeth 2. The ratchet wheel 1 can be movably arranged in the mounting seat 4, and the ratchet wheel 1 is fixedly connected with the table frame 11. The mounting seat 4 is also provided with a slide block 3 and a cam mechanism 9. The cam mechanism 9 is mounted in the mounting frame through a pin shaft and can rotate relative to the mounting seat 4, and the cam mechanism 9 can rotate along the direction A in the drawing and the direction opposite to the direction A in the drawing. The sliding block 3 can convert the rotation motion of the cam mechanism 9 into translation motion, and when the cam mechanism 9 rotates along the direction A in the figure, the sliding block drives the small ratchet to move towards the direction close to the ratchet wheel, so that the small ratchet is meshed with the ratchet wheel; when the cam mechanism 9 is rotated in the direction opposite to the direction a in the figure, the slider 3 carries the small ratchet teeth to move away from the ratchet wheel, so that the small ratchet teeth are disengaged from the ratchet wheel. The sliding block 3 is arranged between the small ratchet 2 and the cam mechanism 9, and the mounting seat is provided with a slideway for the sliding block to slide in. A wedge-shaped space is arranged between the sliding block 3 and the ratchet wheel 1 and is used for accommodating the small ratchet 2. The small ratchet 2 is wedge-shaped and is matched with the wedge-shaped space in shape. The small ratchet contacts the ratchet in one locked position. The small ratchet 2 is elastically preloaded towards the ratchet 1. The first elastic element 5 may be a torsion spring and the second elastic element 6 a compression spring, but other options are possible as long as an elastic bias is achieved.

The slider 3 is connected with the small ratchet 2 through the first connecting structure 31, the slider 3 is connected with the cam mechanism 9 through the second connecting structure 32, the first connecting structure 31 comprises a protrusion 311 and a groove 312, the protrusion 311 is matched with the groove 312, so that the protrusion 311 applies an acting force to the groove 312, and the slider can slide in a direction far away from the ratchet 1 with the small ratchet 2. The invention also provides a ratchet wheel which comprises a sliding block, a small ratchet wheel and a groove, wherein the sliding block is provided with a plurality of small ratchet wheels, the groove is formed in one of the sliding block and the small ratchet wheel, the protrusion is formed in the other of the sliding block and the small ratchet wheel, and the sliding block can drive the small ratchet wheel to move towards a direction away from the ratchet wheel as long as the protrusion and the groove are mutually matched with each other through acting surfaces.

The cam mechanism 9 comprises a first end 91 and a second end 92, the first end is elastically preloaded towards the ratchet 1 by the first elastic element 5, the cam mechanism 9 rotates along the direction A in the figure, the second end 92 is forced to apply a force to the slide block 3, the slide block slides along the slide way to the direction close to the ratchet under the force of the second end of the cam mechanism, and finally the small ratchet can be meshed with the ratchet.

The second connecting structure 32 includes a locking portion 321 and a locking engagement portion 322, and the locking portion 321 and the locking engagement portion 322 can be engaged and disengaged. When the cam mechanism rotates towards the direction A, the clamping part is clamped and separated from the clamping matching part, and the sliding block drives the small ratchet to move towards the direction close to the ratchet under the action of the second end of the cam mechanism; when the cam mechanism rotates in the direction opposite to the direction A, the clamping part is clamped and matched with the clamping matching part, and the slide block moves in the direction away from the ratchet wheel under the action of the cam. Wherein the detent is located at the second end. In the above-described aspect, the locking portion is located in the cam mechanism and the locking engagement portion is located in the slider, but alternatively, the locking engagement portion may be provided in the cam mechanism and the locking portion may be provided in the slider.

In the above-described aspect, the locking portion and the locking engagement portion are two hooks that can be form-fitted, but may be appropriately modified, such as being formed such that the boss and the groove are engaged with each other.

The first end of the cam mechanism is further connected with an operating assembly 7, the operating assembly 7 comprises an operating member 7 and a linkage connecting member 72 connected to the operating member 71 and the first end of the cam mechanism, and the operating member 7 is arranged to press the operating member 7 to realize the rotation of the cam mechanism in the direction opposite to the direction A, namely the rotation of the cam mechanism in the unlocking direction. In the above embodiment, the operating member is selected as a handle and the interlocking link 72 is selected as a bowden cable, but other options are possible and the interlocking between the operating member and the cam mechanism can be achieved. The operating member is mounted to the movable table, preferably on the side closer to the user, but alternatively on the side further from the user.

The cylinder 82 of the damping mechanism 8 is fixedly mounted on the mounting base 4 through a bolt, the second joint 14 is fixedly connected with the table frame 11 through a bolt, a through hole is formed in the second joint 14, and the bolt penetrates through the through hole to fixedly connect the second joint 14 with the table frame. The ratchet 1 protrudes to form a connecting portion 151, and the connecting portion 151 extends out of the mounting seat or the cover plate 41 and is connected with the second connector 14. In the above manner, the connecting portion may be selected to be a hexagonal boss fitted with a hexagonal hole of the second connector 14, and the second connector and the ratchet are fixedly mounted together by the screw 153 engaged with the thread in the ratchet through hole 152. However, the connecting part can also be assembled with the ratchet wheel, and the fixed installation of the ratchet wheel and the second joint can be realized.

The piston rod 81 of the damping mechanism 8 is connected with the movable table 12 through the first joint 13, the first joint 13 is provided with a through hole for a bolt to pass through, and the bolt is connected with the movable table. In the process that the movable table plate is opened relative to the table frame, the piston rod is pulled out of the cylinder barrel and does not generate damping, the mounting seat 4, the sliding block 3 and the cam mechanism 4 which are mounted in the mounting seat 4 rotate together with the cylinder barrel 52, the small ratchet rotates along the ratchet under the action of the second elastic element and the first elastic element, and the small ratchet moves in the direction away from the wedge-shaped space, so that the process cannot be locked and does not generate damping force; when the movable table is opened to a desired angle, the movable table presses the piston rod under the action of the gravity of the movable table, so that the damping mechanism has a downward movement trend, the small ratchet moves towards the wedge-shaped space under the action of the first elastic element and the second elastic element, the small ratchet is meshed with the ratchet wheel to realize locking, and the angle between the movable table and the table frame is locked; when the movable table plate needs to be closed, the operating piece is pressed, the operating piece drives the cam mechanism to rotate through the linkage connecting piece, so that the cam mechanism moves in the direction opposite to the direction A, the small ratchets are separated from the ratchet wheel, unlocking is realized, and the movable table plate rotates towards the closing direction; when the movable table is closed, the operating piece is only loosened, the cam mechanism rotates towards the direction A under the action of the first elastic element, the sliding block drives the small ratchet to move towards the direction of the ratchet wheel, meshing of the small ratchet and the ratchet wheel is realized, and the angle between the movable table and the table frame can be locked. When the angle between the movable table plate and the table frame is locked, the small ratchet is meshed with the ratchet wheel, the sliding block tends to slide in the direction of the cam mechanism, and the second end of the cam mechanism is matched with the sliding block to realize self-locking, so that the position of the sliding block is locked.

When the movable desk plate is opened, the small ratchet jumps around the ratchet wheel, and a 'rattling' sound is generated.

The cover plate 41 and the mounting seat 4 cooperate to form a containing cavity for containing the ratchet wheel, the small ratchet, the sliding block, the first elastic element, the second elastic element and at least part of the linkage connecting piece.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A one-way locking mechanism, comprising: the ratchet locking device comprises a mounting seat, a ratchet wheel and small ratchet teeth, wherein the ratchet wheel is mounted on the mounting seat, and at least part of the circumferential direction of the ratchet wheel is provided with ratchet teeth meshed with the small ratchet teeth; the cam mechanism rotates towards the second direction, force opposite to the first acting force can be generated on the sliding block, so that the sliding block drives the small ratchet to move towards the direction far away from the ratchet wheel, the small ratchet is disengaged from the ratchet wheel, unlocking of the relative position of the small ratchet and the ratchet wheel is achieved, and the first direction is opposite to the second direction.

2. The unidirectional locking mechanism of claim 1, wherein the mounting seat is provided with a slide way for sliding the sliding block.

3. The unidirectional locking mechanism of claim 1, wherein the cam mechanism has a second end, the second end having an operating member coupled thereto, wherein operation of the operating member causes the cam mechanism to rotate in the second direction.

4. The unidirectional locking mechanism of claim 3, wherein the operating assembly comprises a linkage connecting member and an operating portion, the linkage connecting member is connected between the second end of the cam mechanism and the operating portion, and the operating portion is configured to press the operating portion to drive the cam mechanism to rotate in the second direction under the action of the linkage connecting member.

5. The unidirectional locking mechanism of claim 1 wherein the ratchet is rotatably mounted in the mounting block, and the mounting block is rotatable about the ratchet with a small ratchet, slider, cam mechanism.

6. The one-way locking mechanism of claim 1, wherein a wedge-shaped space is provided between the slider and the ratchet wheel, and the small ratchet teeth are elastically preloaded into the wedge-shaped space.

7. The one-way locking mechanism of claim 6, wherein a first resilient element is provided in the mounting seat, the first resilient element biasing the cam mechanism and rotating in a first direction.

8. The unidirectional locking mechanism of claim 1, wherein the cam mechanism and the slider are connected by a second connecting structure, the second connecting structure comprising a locking portion and a locking engagement portion, the locking portion and the locking engagement portion being engageable and disengageable, the locking portion and the locking engagement portion being disengageable when the cam mechanism is rotated in the first direction and engageable when the cam mechanism is rotated in the second direction.

9. The unidirectional locking mechanism of claim 1, wherein the slider is coupled to the small ratchet via a first coupling structure, the first coupling structure comprising a protrusion and a recess, the protrusion and the recess cooperating such that the protrusion exerts a force on the recess, and the slider carries the small ratchet to move away from the ratchet.

10. The unidirectional locking mechanism of claim 1, wherein the small ratchet is engaged with the ratchet wheel and locked, the slider has a tendency to slide in the direction of the cam mechanism, and the position of the slider is locked due to the self-locking of the second end of the cam mechanism in cooperation with the slider.

11. A table using the one-way locking mechanism of any one of claims 1 to 10, wherein the table comprises: the table frame and for table frame rotatable coupling's movable table, one-way locking mechanical system can to movable table with rotation angle between the table frame locks, the table frame with still be connected with damping mechanism between the movable table, damping mechanism one end is connected with the table frame, and the other end is connected with movable table.