CN214465540U

CN214465540U - Rotating shaft capable of being locked and unlocked at any angle within limited range

Info

Publication number: CN214465540U
Application number: CN202120340276.XU
Authority: CN
Inventors: 许健; 李宗斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-02-05
Filing date: 2021-02-05
Publication date: 2021-10-22
Anticipated expiration: 2031-02-05

Abstract

The utility model discloses a pivot of locking of arbitrary angle and unblock in limited range, including spindle sleeve, normal running fit dabber spare, round pin axle and elastic element in the spindle sleeve, the dabber spare includes the otic placode that dabber base member and dabber base member top plane extend, and the dabber base member passes through base member circular arc outer wall and axle sleeve inner wall normal running fit, and the top of otic placode is provided with the otic placode circular arc outer wall that is used for axle sleeve inner wall normal running fit, the left and right sides of otic placode is provided with the round pin axle, and the central axis of round pin axle is parallel with the central axis of axle sleeve, and the top plane left and right sides of dabber base member distributes respectively and installs elastic element, and elastic element's top is contradicted with the round pin axle and is connected. The utility model discloses structural design is simple ingenious, can realize the continuous reliable locking in certain angle within range between axle sleeve and the dabber spare, and unblock convenient operation, and overall structure is compact, preparation low cost.

Description

Rotating shaft capable of being locked and unlocked at any angle within limited range

Technical Field

The utility model relates to a pivot technical field specifically is a can arbitrary angle locking and pivot of unblock at the within range of injecing.

Background

Lockable rotating shafts are mainly used for parts which are required to perform a rotating motion and also need to be stopped reliably at a certain rotating angle. The angle adjusting device has wide application scenes, such as seat backrest angle adjustment, table plate angle adjustment, display support angle adjustment and the like of high-speed trains of automobiles.

The traditional can lock the shortcoming and deficiency:

1. or do not have the locking ability itself, need carry out back angle locking with the help of mechanism combination, like the locking of air spring self etc. and the structure is complicated, and use and maintenance cost are higher, and the life-span is limited.

2. Or the pivot itself has the locking ability, but the angle of locking is discontinuous, can only carry out the locking under specific several interval angles, and a lot of adoption mechanical meshing's modes, its operation experience is relatively poor, though the locking reliability is better, but just can not do all to the scene that needs locking angle continuously adjustable.

3. Or the rotating shaft transmits the locking torque in a friction mode through extrusion (such as electric control or mechanical control), although the locking torque can be continuously adjusted at the moment, the torque transmitted only through extrusion friction has poor reliability, the influence factors of the friction force are many, the output result is not controllable, and meanwhile, in order to output larger torque, the friction contact surface of the rotating shaft needs to be large, which is not suitable for most rotating shaft use scenes.

According to the three defects of the existing products, no related rotating shaft product which is purely mechanical, compact in structure and reliable in locking at any position exists in the market at present.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pivot of angle locking and unblock wantonly in the within range of injecing to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a pivot of locking and unblock of arbitrary angle in injecive scope, includes axle sleeve, normal running fit dabber spare, round pin axle and elastic element in the axle sleeve, dabber spare includes the otic placode of dabber base member and dabber base member top plane extension, and the dabber base member passes through base member circular arc outer wall and axle sleeve inner wall normal running fit, and the top of otic placode is provided with the otic placode circular arc outer wall that is used for axle sleeve inner wall normal running fit, the left and right sides of otic placode is provided with the round pin axle, and the central axis of round pin axle is parallel with the central axis of axle sleeve, and the top of dabber base member left and right sides distributes respectively and installs elastic element, and elastic element's top is contradicted with the round pin axle and is connected.

Preferably, the left side wall and the right side wall of the ear plate form a pin shaft movable cavity with the inner wall of the shaft sleeve respectively, and the cross section of the pin shaft movable cavity is gradually reduced from top to bottom.

Preferably, the device also comprises an unlocking push block arranged in the shaft sleeve, and two sides of the lower end face of the unlocking push block are respectively in contact connection with the corresponding pin shafts.

Preferably, the arc-shaped guide grooves used for being in matched contact with the pin shafts are formed in two sides of the lower end face of the unlocking push block, and the curvature radius of the arc-shaped surfaces of the arc-shaped guide grooves is larger than the radius of the pin shafts.

Preferably, the left side wall and the right side wall of the unlocking push block are provided with push block arc side walls corresponding to the inner wall of the shaft sleeve.

Preferably, the upper end surface of the unlocking push block is further provided with a mounting through hole for mounting the push column, and the arc-shaped outer wall of the shaft sleeve is provided with an arc-shaped movable guide groove for moving the push column.

Preferably, the front end face and the rear end face of the mandrel base body extend to form a shaft head, and the central axis of the shaft head is overlapped with the central axis of the shaft sleeve.

Preferably, the inner walls of the front end and the rear end of the shaft sleeve are provided with limiting ring grooves.

Preferably, the pressing block is further included, a pressing block insertion column extends from the bottom of the pressing block, and the pressing block insertion column is inserted and fixed in the mounting through hole.

Preferably, still including the activity suit at the outside section of thick bamboo circle of axle sleeve, break the pole off with the fingers and thumb and push away the post, the pole that pushes away is worn to be equipped with in the activity on the section of thick bamboo circle, and the lower extreme cartridge that pushes away the post is in the mounting hole, and it has a set of section of thick bamboo circle bedplate to correspond to push away the post extension on the outer wall of section of thick bamboo circle, the tip that breaks the pole off with the fingers and thumb extends and has the cam, and the cam rotates through central pivot and installs on the section of thick bamboo circle bedplate, and the rim of cam is contradicted with the top of pushing away the post and is connected.

Preferably, the bottom of the mandrel base body is also provided with a plane, the bottom plane of the mandrel base body is also extended with lug plates, the left side and the right side of the lug plate at the bottom are also provided with pin shafts, the left side and the right side of the bottom plane of the mandrel base body are respectively provided with corresponding elastic elements, and the bottoms of the elastic elements are in abutting connection with the corresponding pin shafts;

a group of symmetrical push posts are movably arranged on the cylinder ring in a penetrating way, and a group of cylinder ring seat plates symmetrically extend on the outer wall of the cylinder ring;

still include the intermediate junction pole and break the pole with the bottom of breaking pole parallel arrangement off with the fingers and thumb, the tip that the pole was broken off with the fingers and thumb in the bottom extends and has reverse cam, and reverse cam rotates through central pivot to be installed on the section of thick bamboo ring bedplate that corresponds, and reverse cam's rim is contradicted with the post top that pushes away that corresponds and is connected, and the other end that the pole was broken off with the fingers and thumb in the bottom rotates and is connected with the intermediate junction pole, the other end of intermediate junction pole with break the pole with the fingers and thumb and rotate and be connected, the intermediate junction pole is parallel with the central axis that pushes away the post.

Compared with the prior art, the beneficial effects of the utility model are that: structural design is simple ingenious, can realize the reliable stable locking of arbitrary angle between axle sleeve and the dabber spare in great use angle range, and unblock convenient operation, overall structure is compact, preparation low cost.

Drawings

FIG. 1 is a schematic perspective view of an embodiment 1 of a rotating shaft capable of being locked and unlocked at any angle within a limited range;

FIG. 2 is a schematic end view of an embodiment 1 of a rotating shaft capable of being locked and unlocked at any angle within a limited range;

FIG. 3 is a schematic perspective view of a shaft sleeve in the embodiment 1 of the rotating shaft capable of being locked and unlocked at any angle within a limited range;

FIG. 4 is a schematic perspective view of an embodiment 1 of a rotating shaft which can be locked and unlocked at any angle within a limited range, with a shaft sleeve removed;

FIG. 5 is a schematic view of an exploded structure of an embodiment 1 of a rotating shaft which can be locked and unlocked at any angle within a limited range after a shaft sleeve is removed;

FIG. 6 is a schematic structural diagram of the embodiment 1 of the rotating shaft which can be locked and unlocked at any angle within a limited range in the counterclockwise locking process;

FIG. 7 is a schematic structural diagram of the embodiment 1 of the rotating shaft which can be locked and unlocked at any angle within a limited range when the rotating shaft is locked clockwise;

FIG. 8 is a schematic perspective view of an embodiment 2 of a rotating shaft capable of being locked and unlocked at any angle within a limited range;

FIG. 9 is a schematic perspective view of an embodiment 2 of a rotating shaft which can be locked and unlocked at any angle within a limited range, with a shaft sleeve removed;

FIG. 10 is a schematic perspective view of an embodiment 3 of a rotating shaft capable of being locked and unlocked at any angle within a limited range;

FIG. 11 is a schematic perspective view of an embodiment 3 of a rotating shaft which can be locked and unlocked at any angle within a limited range, with a shaft sleeve removed;

FIG. 12 is a schematic perspective view of an embodiment 4 of a rotating shaft capable of being locked and unlocked at any angle within a limited range;

fig. 13 is a schematic perspective view of a rotating shaft embodiment 4 which can be locked and unlocked at any angle within a limited range, with a shaft sleeve removed.

In the figure: 1-shaft sleeve, 12-limiting ring groove, 13-arc movable guide groove, 2-mandrel piece, 21-mandrel base body, 22-lug plate, 23-shaft head, 3-pin shaft, 4-elastic element, 5-unlocking push block, 51-arc guide groove, 52-push block arc side wall, 53-installation through hole, 6-pin shaft movable cavity, 7-pressing block, 8-cylinder ring, 81-cylinder ring seat plate, 82-breaking rod, 83-cam, 84-bottom breaking rod, 85-reverse cam, 86-middle connecting rod and 9-push column.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1: please refer to fig. 1 to 7, a rotating shaft capable of being locked and unlocked at any angle within a limited range includes a shaft sleeve 1, a core shaft member 2 rotatably fitted in the shaft sleeve 1, a pin shaft 3 and an elastic element 4, wherein the core shaft member 2 includes a core shaft base member 21 and an ear plate 22 extending from the top plane of the core shaft base member 21, the core shaft base member 21 is rotatably fitted with the inner wall of the shaft sleeve 1 through a circular arc outer wall of the base member, the top of the ear plate 22 is provided with an ear plate circular arc outer wall for rotatably fitting the inner wall of the shaft sleeve 1, the pin shaft 3 is provided on the left and right sides of the ear plate 22, the central axis of the pin shaft 3 is parallel to the central axis of the shaft sleeve 1, the elastic element 4 is respectively distributed and mounted on the left and right sides of the top plane of the core shaft base member 21, and the top of the elastic element 4 is connected with the pin shaft 3 in an abutting joint manner.

The utility model discloses a locking principle: the elastic element 4 applies pre-pressure to the pin shaft 3, the pre-pressure enables the pin shaft to be simultaneously contacted with the side wall of the lug plate 22 and the inner circular surface of the shaft sleeve, and the number of the pin shafts is at least 2 in order to realize bidirectional self-locking.

As shown in fig. 6, resultant force generated among the pin shaft 3, the elastic element 4, the shaft sleeve 1 and the mandrel member 2 on the left side enables self-locking between the pin shaft 3 and the shaft sleeve 1, and also enables self-locking between the pin shaft 3 and the mandrel member 2, so that the mandrel member 2 cannot rotate clockwise relative to the shaft sleeve 1 through mechanical transmission of the pin shaft 3, and rotation in the clockwise direction is locked;

as shown in fig. 7, similarly, the right-side pin enables the spindle part 2 and the shaft sleeve 1 to be locked to rotate counterclockwise, and the rotation in two directions is limited, so that the shaft sleeve 1 and the spindle part 2 are completely locked.

The left side wall and the right side wall of the ear plate 22 form a pin shaft movable cavity 6 with the inner wall of the shaft sleeve 1 respectively, and the cross-sectional dimension of the pin shaft movable cavity 6 is gradually reduced from top to bottom.

Preferably, the left side and the right side of the top plane of the mandrel base body 21 are provided with elastic piece installation grooves, the elastic elements 4 are installed in the elastic piece installation grooves, when the elastic elements 4 are completely compressed, the pin shaft 3 is simultaneously contacted with the top plane of the mandrel base body 21 and the side wall of the lug plate 22, and a small movable gap is left between the pin shaft 3 and the inside of the shaft sleeve 1.

The utility model discloses still including arranging unblock ejector pad 5 in axle sleeve 1, unblock ejector pad 5's lower terminal surface both sides are connected with the 3 contacts of the round pin axle that correspond respectively.

The utility model discloses an unblock principle: when no external force acts on the unlocking push block 5, the core shaft part 2 is in contact self-locking with the shaft sleeve 1 through the pin shaft 3, and locking is achieved at the moment.

When external force pushes the unlocking push block 5 downwards, the unlocking push block 5 pushes the pin shaft 3 to move downwards, so that the pin shaft 3 is separated from the inner wall of the shaft sleeve 1, the self-locking relation between the core shaft part 2 and the shaft sleeve 1 is released, unlocking is achieved, and at the moment, the core shaft part 2 is free from constraint and can move freely relative to the shaft sleeve 1.

The arc-shaped guide groove 51 used for being in matched contact with the pin shaft 3 is formed in each of two sides of the lower end face of the unlocking push block 5, and the arc curvature radius of the arc-shaped guide groove 51 is larger than that of the pin shaft 3. So that the pin shaft 3 can be in adaptive contact with the unlocking push block 5 better.

The left side wall and the right side wall of the unlocking push block 5 are provided with push block arc side walls 52 corresponding to the inner wall of the shaft sleeve 1. The unlocking push block 5 can be better installed in the shaft sleeve 1 in a fitting mode.

The upper end face of the unlocking push block 5 is further provided with a mounting through hole 53 for mounting the push column 9, and the arc-shaped outer wall of the shaft sleeve 1 is provided with an arc-shaped movable guide groove 13 for moving the push column 9. The unlocking can be realized by pushing the unlocking push block 5 through the push column 9, the operation and the use are convenient, and the arc-shaped movable guide groove 13 can provide a movable space for the movement of the push column 9.

The front end surface and the rear end surface of the mandrel base body 21 extend to form a shaft head 23, and the central axis of the shaft head 23 is overlapped with the central axis of the shaft sleeve 1. The mandrel member 2 may be connected to an external transmission member via a shaft head 23.

Limiting ring grooves 12 are formed in the inner walls of the front end and the rear end of the shaft sleeve 1, and limiting clamping rings, end face bearings and other parts can be installed in the limiting ring grooves, so that the front end and the rear end of the mandrel component 2 are limited, and the mandrel component 2 is prevented from being separated from the shaft sleeve 1.

Example 2: referring to fig. 8 to 9, the difference from embodiment 1 is that the present embodiment further includes a pressing block 7, a pressing block insertion column extends from the bottom of the pressing block 7, and the pressing block insertion column is inserted and fixed in the installation through hole 53.

For the occasion that the requirement on locking force or operation comfort is not very high, such as an angle-adjustable mobile phone support, the scheme of embodiment 2 can be adopted, only 2 pin shafts are arranged inside, the pressing block 7 is pushed manually, the elastic force of the elastic element 4 is overcome, and unlocking can be performed, the structure is simple, and the cost is low.

Example 3: referring to fig. 10 to 11, the difference from embodiment 1 is that the present embodiment further includes a cylinder ring 8 movably sleeved outside the shaft sleeve 1, a snapping rod 82 and a pushing post 9, the pushing post 9 movably penetrates through the cylinder ring 8, a lower end of the pushing post 9 is inserted and fixed in the installation through hole 53, a set of cylinder ring seat plates 81 extends on an outer wall of the cylinder ring 8 corresponding to the pushing post 9, a cam 83 extends from an end of the snapping rod 82, the cam 83 is rotatably installed on the cylinder ring seat plates 81 through a central rotating shaft, and a rim of the cam 83 is connected with a top end of the pushing post 9 in an abutting manner.

Through promoting to break pole 82 off with the fingers and thumb for cam 83 rotates, and pivoted cam 83 can be supported downwards and press the ejector pin 9, and ejector pin 9 promotes unblock ejector pad 5 and round pin axle 3 downstream, thereby realizes the unblock, and relative with embodiment 2, the structure is a little more complicated, and the operating force is littleer relatively, uses and experiences better.

Example 4: referring to fig. 12 to 13, the difference from embodiment 3 is that the bottom of the mandrel base 21 is also set to be a plane, the bottom plane of the mandrel base 21 also extends to form the ear plate 22, the left and right sides of the ear plate 22 at the bottom are also provided with the pin shafts 3, the left and right sides of the bottom plane of the mandrel base 21 are also respectively provided with the corresponding elastic elements 4, and the bottoms of the elastic elements 4 are connected with the corresponding pin shafts 3 in an abutting manner;

a group of symmetrical push posts 9 are movably arranged on the cylinder ring 8 in a penetrating way, and a group of cylinder ring seat plates 81 are symmetrically extended on the outer wall of the cylinder ring 8;

the push-column pushing mechanism further comprises an intermediate connecting rod 86 and a bottom snapping rod 84 arranged in parallel with the snapping rod 82, the end of the bottom snapping rod 84 extends to form a reverse cam 85, the reverse cam 85 is rotatably mounted on the corresponding cylinder ring seat plate 81 through a central rotating shaft, the rim of the reverse cam 85 is connected with the top end of the corresponding push column 9 in an abutting mode, the other end of the bottom snapping rod 84 is rotatably connected with the intermediate connecting rod 86, the other end of the intermediate connecting rod 86 is rotatably connected with the snapping rod 82, and the intermediate connecting rod 86 is parallel to the central axis of the push column 9.

To the very high occasion of locking force or stability requirement, for example display support among the medical equipment, perhaps need bear scenes such as adjustable table of great moment, can adopt embodiment 4's technical scheme, inside symmetry is provided with 4 round pins, locking force and reliability have been guaranteed, use simultaneously to break formula trigger structure off with the fingers and thumb, one hand promotes to break the pole 82 off with the fingers and thumb, break the pole 82 off with the fingers and thumb pole 84 in the middle of can driving connecting rod 86 and bottom off with the fingers and thumb simultaneously, can unblock, operation convenient to use has had performance and ease for use concurrently.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A rotating shaft capable of being locked and unlocked at any angle within a limited range is characterized in that: including axle sleeve (1), the dabber spare (2), round pin axle (3) and elastic element (4) of normal running fit in axle sleeve (1), dabber spare (2) include dabber base member (21) and dabber base member (21) top plane ear plate (22) that extend, dabber base member (21) are through base member circular arc outer wall and axle sleeve (1) inner wall normal running fit, and the top of ear plate (22) is provided with the ear plate circular arc outer wall that is used for axle sleeve (1) inner wall normal running fit, the left and right sides of ear plate (22) is provided with round pin axle (3), and the central axis of round pin axle (3) is parallel with the central axis of axle sleeve (1), and the top plane left and right sides of dabber base member (21) distributes respectively and installs elastic element (4), and the top and round pin axle (3) of elastic element (4) are contradicted and are connected.

2. The rotating shaft capable of being locked and unlocked at any angle within a limited range according to claim 1, wherein: the left side wall and the right side wall of the ear plate (22) form a pin shaft movable cavity (6) with the inner wall of the shaft sleeve (1) respectively, and the section size of the pin shaft movable cavity (6) is gradually reduced from top to bottom.

3. The rotating shaft capable of being locked and unlocked at any angle within a limited range according to claim 1, wherein: the shaft sleeve is characterized by further comprising an unlocking push block (5) arranged in the shaft sleeve (1), and two sides of the lower end face of the unlocking push block (5) are respectively in contact connection with the corresponding pin shafts (3).

4. A rotating shaft capable of being locked and unlocked at any angle within a limited range according to claim 3, wherein: the two sides of the lower end face of the unlocking push block (5) are provided with arc guide grooves (51) which are used for being in matched contact with the pin shaft (3), and the radius of curvature of the arc surfaces of the arc guide grooves (51) is larger than that of the pin shaft (3).

5. A rotating shaft capable of being locked and unlocked at any angle within a limited range according to claim 3, wherein: the left side wall and the right side wall of the unlocking push block (5) are provided with push block arc side walls (52) corresponding to the inner wall of the shaft sleeve (1).

6. A rotating shaft capable of being locked and unlocked at any angle within a limited range according to claim 3, wherein: the upper end face of the unlocking push block (5) is further provided with a mounting through hole (53) for mounting the push column (9), and the arc-shaped movable guide groove (13) for moving the push column (9) is formed in the arc-shaped outer wall of the shaft sleeve (1).

7. The rotating shaft capable of being locked and unlocked at any angle within a limited range according to claim 1, wherein: the front end face and the rear end face of the mandrel base body (21) extend to form a shaft head (23), the central axis of the shaft head (23) coincides with the central axis of the shaft sleeve (1), and the inner walls of the front end and the rear end of the shaft sleeve (1) are provided with limiting ring grooves (12).

8. The rotating shaft capable of being locked and unlocked at any angle within a limited range according to claim 6, wherein: the pressing block (7) is further included, a pressing block inserting column extends from the bottom of the pressing block (7), and the pressing block inserting column is inserted and fixed in the installation through hole (53).

9. The rotating shaft capable of being locked and unlocked at any angle within a limited range according to claim 6, wherein: still including activity suit in the outside section of thick bamboo circle (8) of axle sleeve (1), break pole (82) and push away post (9) off with the fingers and thumb, the activity is worn to be equipped with push away post (9) on section of thick bamboo circle (8), and the lower extreme cartridge of push away post (9) is fixed in installation through-hole (53), and it has a set of section of thick bamboo circle bedplate (81) to correspond to push away post (9) extension on the outer wall of section of thick bamboo circle (8), the tip of breaking pole (82) off with the fingers and thumb extends to have cam (83), and cam (83) rotate through central pivot and install on section of thick bamboo circle bedplate (81), and the rim of cam (83) is contradicted with the top of pushing away post (9) and is connected.

10. A shaft capable of being locked and unlocked at any angle within a limited range according to claim 9, wherein: the bottom of the mandrel base body (21) is also set to be a plane, lug plates (22) also extend from the bottom plane of the mandrel base body (21), pin shafts (3) are also arranged on the left side and the right side of the lug plates (22) on the bottom, corresponding elastic elements (4) are also respectively distributed and mounted on the left side and the right side of the bottom plane of the mandrel base body (21), and the bottoms of the elastic elements (4) are in abutting connection with the corresponding pin shafts (3);

a group of symmetrical push posts (9) are movably arranged on the cylinder ring (8) in a penetrating way, and a group of cylinder ring seat plates (81) symmetrically extend on the outer wall of the cylinder ring (8);

still include intermediate junction pole (86) and break pole (84) with breaking off with the fingers and thumb the bottom of pole (82) parallel arrangement off with the fingers and thumb, the tip that pole (84) were broken off with the fingers and thumb in the bottom extends and has reverse cam (85), and reverse cam (85) rotate through central rotating shaft and install on corresponding section of thick bamboo circle bedplate (81), and the rim of reverse cam (85) contradicts with the pushing column (9) top that corresponds and is connected, and the other end that pole (84) were broken off with the fingers and thumb in the bottom rotates and is connected with intermediate junction pole (86), and the other end of intermediate junction pole (86) rotates with breaking off with the fingers and thumb the pole (82) and is connected, and intermediate junction pole (86) are parallel with the central axis that pushes away the column (9).