CN212479897U

CN212479897U - Movable joint device of support frame

Info

Publication number: CN212479897U
Application number: CN202021246373.4U
Authority: CN
Inventors: 孙书伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-01
Filing date: 2020-07-01
Publication date: 2021-02-05
Anticipated expiration: 2030-07-01

Abstract

The invention relates to a movable joint device of a support frame, which is applied to movable joints of product supports of fans, table lamps, moxibustion instruments and the like and is used for adjusting the angle of the supports, a roller type overrunning clutch is adopted to connect a first rotating handle and a second rotating handle, the movable joint device can rotate freely when the movable joint device is adjusted upwards and downwards, an unlocking device is adopted when the movable joint device rotates upwards and downwards, the movable joint device is locked by the overrunning clutch when the movable joint device rotates downwards, the first rotating handle is fixedly connected with the overrunning clutch, the overrunning clutch is connected with the second rotating handle, a claw wheel and a roller of the overrunning clutch are movably connected with the outer ring of the second rotating handle, an unlocking button and a pushing sliding block are adopted to be connected with the roller of the overrunning clutch, the roller of the overrunning clutch is driven by the unlocking button to move for locking and unlocking, the structure is simple and reliable, compared with ratchet wheel type and tooth embedded type clutches, no noise is generated when the movable, can realize fine adjustment, and the ratchet wheel type and the jaw type can only fixedly rotate one tooth.

Description

Movable joint device of support frame

Technical Field

The invention relates to a movable joint device of a support frame, which is applied to movable joints of product supports such as fans, table lamps, moxibustion instruments and the like and is used for adjusting the angle of the support.

Background

Some products that have a support, like fan, desk lamp, moxibustion instrument etc. need adjust the every single move angle, need use some freely movable joints, because the effect of gravity, generally can rotate wantonly when facing upward the regulation, adopt unlocking device when bowing down and adjusting, movable joint just is equivalent to a unidirectional rotating device, does not have the restriction when upwards rotating, is locked by surpassing the clutch when downwards rotating, need press the unblock button and just can rotate.

Disclosure of Invention

The invention aims to provide a support frame movable joint device with simple structure, reliable performance and durability, which adopts a roller type overrunning clutch structure to ensure that a movable joint can rotate towards one direction (such as clockwise), at the moment, a roller is taken to a wider part in a groove and is not wedged in the groove, so that a claw wheel can rotate clockwise, and the roller is wedged in the wedge groove under the action of friction force during reverse rotation, so that an outer ring is clamped and locked and can not rotate.

Adopt first turning handle, second turning handle, freewheel clutch, unlocking device constitutes, first turning handle and freewheel clutch fixed connection, freewheel clutch and second turning handle are through the outer lane swing joint of freewheel clutch's dog-wheel, roller and second turning handle, unlocking device adopts the release button, promotes the roller of slider and freewheel clutch and is connected, and the roller that drives freewheel clutch through the release button removes and locks and unblock.

The first rotating handle is fixed with the overrunning clutch pawl wheel through a screw, the second rotating handle clamps the overrunning clutch pawl wheel through a gasket, the gasket is fixed on the outer ring of the second rotating handle through a screw, so that the first rotating handle and the second rotating handle of the overrunning clutch are tightly combined and cannot be separated, the second rotating handle can rotate around the overrunning clutch through the gasket, the overrunning clutch is fixed on the first rotating handle, and the second rotating handle can rotate around the first rotating handle equivalently.

The claw wheel is provided with a sliding groove and used for installing a pushing sliding block of the unlocking device, and the pushing sliding block enables the roller of the overrunning clutch to obtain an outward pushing force, so that the overrunning clutch is locked more sensitively.

The unlocking device is characterized in that a spring is arranged at the lower end of the unlocking button, an inclined plane is arranged on the locking button and connected with a first inclined plane of the pushing sliding block, and the locking button pushes the pushing sliding block to push outwards under the action of the spring.

The pushing sliding block is provided with a second inclined surface and connected with the roller of the overrunning clutch, and under the action of the spring, the pushing sliding block pushes the roller outwards along the wedge groove.

The roller and the pushing slide block are made of metal iron and can be attracted by a magnet.

And a magnet is arranged in the unlocking button and used for attracting and pushing the sliding block and the roller, so that unlocking is more sensitive.

The technical scheme of the invention is as follows: the roller type overrunning clutch is used for connecting the first rotating handle and the second rotating handle, the first rotating handle and the second rotating handle can rotate freely when the first rotating handle and the second rotating handle are adjusted to face upward, the unlocking device is used when the second rotating handle and the second rotating handle are adjusted to face downward, the first rotating handle and the second rotating handle are not limited when the first rotating handle and the second rotating handle rotate upward, and the overrunning clutch is locked when.

The invention has the beneficial effects that: the roller type overrunning clutch has the advantages that the structure is simple and reliable, compared with a ratchet wheel type clutch and a jaw type clutch, the overrunning clutch has no noise during rotation, the adjustable rotating angle range is smaller, fine adjustment can be achieved, and only one tooth can be fixedly rotated in the ratchet wheel type clutch and the jaw type clutch.

Drawings

The invention is further illustrated by the following figures and examples,

figure 1 is a perspective view of a movable joint,

figure 2 is a perspective cross-sectional view of the movable joint,

figure 3 is a left side sectional view of the movable joint,

figure 4 is a front internal structure view of the movable joint,

figure 5 is a rear view internal structure view of the movable joint,

figure 6 is a three-dimensional internal structure view of a movable joint,

FIG. 7 is a front view of the combination of the overrunning clutch, the washer and the unlocking button,

FIG. 8 is a left side view of the combination of the overrunning clutch, the washer and the unlocking button,

figure 9 is a rear view of the overrunning clutch, washer and release button combination,

FIG. 10 is a left side sectional view of the combination of the overrunning clutch, the washer and the unlocking button

FIG. 11 is a perspective view of the combination of the overrunning clutch, the washer and the unlocking button,

FIG. 12 is a perspective sectional view of the combination of the overrunning clutch, the washer and the unlocking button,

figure 13 is a perspective view of the overrunning clutch,

fig. 14 is a perspective view of the combination of the unlock button, the push slider, and the roller.

The numbers in the figures are respectively: 1: a first stem; 2: a second stem; 3: an unlock button; 4: a roller; 5: a gasket; 6: the claw wheel is connected with the first rotating handle through a screw hole; 7: a jaw wheel; 8: pushing the sliding block; 9: a claw wheel wedge groove; 10: pushing the second inclined plane of the sliding block; 11: unlocking the button ramp; 12: pushing the first inclined plane of the sliding block; 13: a spring; 14: a magnet; 15: a second rotating handle outer ring.

Detailed Description

Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings. These exemplary embodiments are provided so that those skilled in the art can clearly understand the present invention and can implement the present invention according to the description herein. The drawings and detailed description are not intended to limit the invention, which is defined by the appended claims.

As shown in fig. 3, the locking device is composed of a first rotating handle, a second rotating handle, an overrunning clutch and an unlocking device, wherein the first rotating handle is fixedly connected with the overrunning clutch, the overrunning clutch is movably connected with the second rotating handle through a claw wheel of the overrunning clutch and an outer ring of the second rotating handle, the unlocking device is connected with a roller of the overrunning clutch through an unlocking button and a pushing sliding block, and the roller of the overrunning clutch is driven to move through the unlocking button to be locked and unlocked.

As shown in fig. 3, the first rotating handle is fixed with the overrunning clutch pawl wheel through a screw, the second rotating handle is fixed on the outer ring of the second rotating handle through a gasket which is clamped with the overrunning clutch pawl wheel, so that the first rotating handle and the second rotating handle of the overrunning clutch are tightly combined and cannot be separated, the second rotating handle can rotate around the overrunning clutch through the gasket, the overrunning clutch is fixed on the first rotating handle, and the second rotating handle can rotate around the first rotating handle equivalently.

As shown in fig. 10 and 12, in the unlocking device, a spring is arranged at the lower end of the unlocking button, an inclined surface is arranged on the locking button and connected with the first inclined surface of the pushing slider, and the locking button pushes the pushing slider outwards under the action of the spring.

As shown in fig. 14, the pushing slider is provided with a second inclined surface, and is connected with the roller of the overrunning clutch, under the action of the spring, the pushing slider gives an outward pushing force to the roller along the wedge groove, and when the roller rotates in the opposite direction (anticlockwise), the roller is wedged tightly in the wedge groove under the action of friction force, so that the clamping outer ring is locked and cannot rotate anticlockwise.

As shown in fig. 10, a magnet is arranged in the unlocking button and is used for attracting and pushing the sliding block and the roller, so that unlocking is more sensitive, when the unlocking button is unlocked, the magnet attracts and pushes the sliding block and the roller to provide inward pull force for the roller along the wedge groove, when the roller rotates clockwise, the roller is brought to a wider part in the groove under the action of friction force and is not wedged in the groove, and therefore the claw wheel and the second rotating handle can rotate freely.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a support frame freely movable joint device which characterized in that adopts first turning handle, second turning handle, freewheel clutch, and unlocking device constitutes, first turning handle and freewheel clutch fixed connection, freewheel clutch and second turning handle, through the outer lane swing joint of the dog-wheel of freewheel clutch, roller and second turning handle, unlocking device adopts the release button, promotes the roller of slider and freewheel clutch and is connected, and the roller that drives freewheel clutch through the release button removes and locks and unblock.

2. The device as claimed in claim 1, wherein the first handle is fixed to the overrunning clutch pawl wheel by a screw, the second handle is fixed to the overrunning clutch pawl wheel by a washer, and the washer is fixed to the outer ring of the second handle by a screw.

3. The device as claimed in claim 1, wherein the jaw wheel is provided with a sliding groove for receiving a pushing slider of the unlocking device.

4. The device as claimed in claim 1, wherein the lower end of the unlocking button is provided with a spring, the locking button is provided with an inclined surface connected to the first inclined surface of the pushing slider, and the locking button pushes the pushing slider outward.

5. The device as claimed in claim 1, wherein the pushing slider is provided with a second inclined surface connected to the roller of the overrunning clutch, and the pushing slider pushes the roller outwards along the wedge groove.

6. The device as claimed in claim 1, wherein the rollers and the push slider are made of metallic iron.

7. The device as claimed in claim 1, wherein a magnet is disposed in the unlocking button.