CN113790208B

CN113790208B - Rotary joint

Info

Publication number: CN113790208B
Application number: CN202110835981.1A
Authority: CN
Inventors: 李建设; 赵惠青; 姜守元; 雷跃银
Original assignee: Kunshan Kaite Children Co ltd
Current assignee: Kunshan Kaite Children Co ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2022-06-03
Anticipated expiration: 2041-07-23
Also published as: CN113790208A

Abstract

The invention discloses a rotary joint which comprises a connecting sleeve, a pressing component, a locking component and a connecting head; the connecting sleeve is rotatably connected with the connecting head; the locking assembly comprises a cross wheel, a cross wheel linkage piece and a reset pressure spring, and the cross wheel linkage piece and the reset pressure spring are respectively arranged at two ends of the cross wheel; the cross wheel is movably arranged in the connecting sleeve and the connecting head; the cross wheel linkage piece is movably arranged in the connecting sleeve and is matched and connected with the pressing component; the return spring is arranged in the connector; the locking assembly has a locking state and a releasing state, and in the locking state, the cross wheel is respectively clamped with the connecting sleeve and the connecting head, so that the connecting sleeve is fixed relative to the connecting head; in the release state, the pressing assembly drives the spider linkage to push the spider away from the connection sleeve, so that the connection sleeve is rotatable relative to the connection head. The rotary joint assembly can be used for connecting two parts, the two connected parts can rotate relatively, and the rotary joint assembly is simple in structure, stable in connection and convenient and fast to operate.

Description

Rotary joint

Technical Field

The invention relates to the technical field of connecting parts, in particular to a rotary joint.

Background

In industrial production and life, two parts are often required to be connected through one connecting part, generally, bolts, screws or pins and the like are used as connecting parts to connect the two parts, the installation and disassembly operations of the bolts, the screws or the pins and the like are troublesome, and the two connected parts cannot rotate relatively.

Disclosure of Invention

The present invention is directed to overcoming the above-mentioned drawbacks of the prior art, and providing a rotary joint for connecting two members, wherein the two members can rotate relative to each other.

In order to achieve the purpose, the invention adopts the following technical scheme: a rotary joint comprises a connecting sleeve, a pressing component, a locking component and a connecting head; the connecting sleeve is rotatably connected with the connecting head; the locking assembly comprises a cross wheel, a cross wheel linkage piece and a reset pressure spring, and the cross wheel linkage piece and the reset pressure spring are respectively arranged at two ends of the cross wheel; the cross wheel is movably arranged in the connecting sleeve and the connecting head; the cross wheel linkage piece is movably arranged in the connecting sleeve and is matched and connected with the pressing component; the reset pressure spring is arranged in the connector; the locking assembly has a locking state and a releasing state, and in the locking rotating state, the cross wheel is respectively clamped with the connecting sleeve and the connector, so that the connecting sleeve is fixed relative to the connector; in a release state, the pressing assembly drives the spider linkage to push the spider away from the connecting sleeve, so that the connecting sleeve is rotatable relative to the connecting head.

Furthermore, the cross wheel is shaped like a plus sign.

Further, the cross wheel linkage piece comprises an abutting circular plate and a matching convex block which are integrally connected; the end face of the matching lug departing from the butting circular plate is provided with a driven inclined plane.

Furthermore, the connecting sleeve is an H-shaped circular sleeve, and two ends of the connecting sleeve are respectively provided with a first movable cavity and a first connecting cavity; the cross wheel and the cross wheel linkage piece are movably arranged in the first movable cavity.

Furthermore, a first clamping groove is formed in the inner wall of the first movable cavity, and the shape of the first clamping groove is matched with that of the cross wheel.

Furthermore, the connector is an open cylinder body, and a second movable cavity is arranged in the connector; the cross wheel is movably arranged in the second movable cavity; the reset pressure spring is arranged between the cross wheel and the bottom plate of the connector.

Furthermore, a second clamping groove is formed in the inner wall of the second movable cavity, and the shape of the second clamping groove is matched with that of the cross wheel.

Furthermore, the connecting sleeve is longitudinally provided with a pressure-bearing key hole, and the pressure-bearing key hole is communicated with the first movable cavity; the pressing assembly is movably arranged in the first movable cavity and is exposed out of the connecting sleeve through the pressure-bearing key hole.

Further, the pressing assembly comprises a pressure bearing key and a pressure bearing spring; the pressure bearing key is an open cylinder, and the open end of the pressure bearing key is abutted to the cross wheel linkage piece; the pressure bearing spring is fixed on the top plate of the pressure bearing key, and the free end of the pressure bearing spring is abutted with the longitudinal sinking groove of the cross wheel linkage piece.

Furthermore, the periphery of the pressure bearing key is provided with a limiting boss, and the limiting boss is movably arranged in the first movable cavity.

Compared with the prior art, the invention has the advantages that:

the rotary joint assembly can be used for connecting two parts, the two connected parts can rotate relatively, and the rotary joint assembly is simple in structure, stable in connection and convenient and fast to operate.

Drawings

FIG. 1 is a schematic view of a rotary joint according to the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 3 is an exploded view of a component of a rotary joint of the present invention.

Description of the drawings:

60. a cross wheel; 61. a spider linkage; 62. resetting the pressure spring; 63. connecting sleeves; 64. a pressure bearing key; 65. a pressure-bearing spring; 66. a connecting head.

Detailed Description

The following non-limiting detailed description of the present invention is provided in connection with the preferred embodiments and accompanying drawings. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length h", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

Referring to fig. 1 to 3, the rotary joint of the present invention includes a connecting sleeve 63, a pressing member, a locking member and a connecting head 66, wherein the connecting sleeve 63 is rotatably connected to the connecting head 66, the locking member is movably disposed in the connecting sleeve 63 and the connecting head 66, and the pressing member is in contact fit with the locking member.

The connecting sleeve 63 is an H-shaped circular sleeve, and two ends of the connecting sleeve are respectively provided with a first movable cavity and a first connecting cavity, the first movable cavity is used for accommodating the locking component, and the first connecting cavity is used for being connected with an external component. The inner wall of the first movable cavity is provided with a first clamping groove in a shape of a plus. The connecting sleeve 63 is longitudinally provided with a pressure-bearing keyhole which is communicated with the first movable cavity.

The connector 66 is an open barrel with a second movable cavity therein for receiving the locking assembly. The inner wall of the second movable cavity is provided with a second clamping groove in a shape of a plus. The open end of the connector 66 is provided with a circular socket, and the socket is rotatably inserted into the connecting sleeve 63. The connector 66 is fixed vertically on the surface of the bottom plate opposite to the open end, and is used for being connected with an external component.

The locking assembly comprises a cross wheel 60, a cross wheel linkage piece 61 and a return compression spring 62, wherein the cross wheel linkage piece 61 and the return compression spring 62 are respectively arranged at two ends of the cross wheel 60.

The spider 60 is generally "+" shaped and has four engagement blocks, with adjacent engagement blocks being perpendicular to each other. Preferably, the peripheral surfaces of the clamping blocks are all arc surfaces, and the radius of the arc surface of each clamping block is equal. The cross wheel 60 is movably arranged in the first movable cavity and the second movable cavity, and the shapes of the first clamping groove and the second clamping groove are matched with the shape of the cross wheel 60.

The cross-wheel link 61 is movably disposed in the first movable chamber, and the cross-wheel link 61 includes an abutting circular plate and a fitting projection integrally connected. The end face of the matching lug departing from the abutting circular plate is provided with a driven inclined plane, and the driven inclined plane inclines from the abutting circular plate to the free end of the matching lug. The matching lug is also provided with a longitudinal sinking groove on the passive inclined plane. Preferably, the matching lug is in a two-stage step shape, the free end from the abutting circular plate to the matching lug is divided into a first-stage step and a second-stage step, and the first-stage step surface and the second-stage step surface are inclined surfaces.

The return compression spring 62 is arranged in the second movable cavity and between the bottom plate of the connector 66 and the cross wheel 60, and the expansion direction of the return compression spring 62 is consistent with the movable direction of the cross wheel 60.

The locking assembly has a locking state and a releasing state, and in the locking rotating state, the clamping blocks of the cross wheel 60 are respectively clamped with the first clamping grooves and the second clamping grooves, so that the connecting sleeve 63 is fixed relative to the connecting head 66; in the released state, the spider linkage 61 pushes the spider 60 away from the connecting sleeve 63, so that the connecting sleeve 63 is rotatable relative to the connecting head 66.

The pressing assembly includes a pressure key 64 and a pressure spring 65. The pressure bearing key 64 is movably arranged in the first movable cavity, and the connecting sleeve 63 is exposed out of the pressure bearing key hole. The pressure bearing key 64 is an open cylinder, and the open end of the pressure bearing key 64 is abutted with the passive inclined plane of the matching bump. Preferably, the open end of the pressure key 64 is provided with a step that mates with a step of the mating projection. The periphery of the pressure bearing key 64 is provided with a limiting boss which is movably arranged in the first movable cavity.

The pressure-bearing spring 65 is fixed on the top plate of the pressure-bearing key 64, and the free end of the pressure-bearing spring 65 is abutted against the longitudinal groove of the matching convex block.

The pressure receiving key 64 is pressed downward, and the pressure receiving key 64 pushes the cross wheel linkage 61 toward the connecting head 66, so that the cross wheel linkage 61 pushes the cross wheel 60 away from the connecting sleeve 63.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A swivel joint, characterized by:

the connecting sleeve is rotatably connected with the connecting head;

the locking assembly comprises a cross wheel, a cross wheel linkage piece and a reset pressure spring, and the cross wheel linkage piece and the reset pressure spring are respectively arranged at two ends of the cross wheel;

the cross wheel is movably arranged in the connecting sleeve and the connecting head, the cross wheel linkage part is movably arranged in the connecting sleeve and is matched and connected with the pressing component, and the reset pressure spring is arranged in the connecting head;

the locking assembly has a locking state and a releasing state, and in the locking rotating state, the cross wheel is respectively clamped with the connecting sleeve and the connector, so that the connecting sleeve is fixed relative to the connector;

in a release state, the pressing assembly drives the spider linkage to push the spider away from the connecting sleeve, so that the connecting sleeve is rotatable relative to the connecting head.

2. A rotary joint according to claim 1, wherein:

the cross wheel is shaped like a plus sign.

3. The swivel joint of claim 1, wherein:

the cross wheel linkage piece comprises an abutting circular plate and a matching convex block which are integrally connected;

the end face of the matching lug departing from the butting circular plate is provided with a driven inclined plane.

4. The swivel joint of claim 1, wherein:

the connecting sleeve is an H-shaped circular sleeve, and two ends of the connecting sleeve are respectively provided with a first movable cavity and a first connecting cavity;

the cross wheel and the cross wheel linkage piece are movably arranged in the first movable cavity.

5. The swivel joint of claim 4, wherein:

the inner wall of the first movable cavity is provided with a first clamping groove, and the shape of the first clamping groove is matched with that of the cross wheel.

6. The swivel joint of claim 1, wherein:

the connector is an open cylinder, and a second movable cavity is arranged in the connector;

the cross wheel is movably arranged in the second movable cavity;

the reset pressure spring is arranged between the cross wheel and the bottom plate of the connector.

7. The swivel joint of claim 6, wherein:

and a second clamping groove is formed in the inner wall of the second movable cavity, and the shape of the second clamping groove is matched with that of the cross wheel.

8. The swivel joint of claim 4, wherein:

the connecting sleeve is longitudinally provided with a pressure-bearing key hole, and the pressure-bearing key hole is communicated with the first movable cavity;

the pressing assembly is movably arranged in the first movable cavity and exposes out of the connecting sleeve through the pressure-bearing key hole.

9. A swivelling joint as claimed in claim 4, wherein:

the pressing assembly comprises a pressure bearing key and a pressure bearing spring;

the pressure bearing key is an open cylinder, and the open end of the pressure bearing key is abutted with the cross wheel linkage piece;

the pressure bearing spring is fixed on the top plate of the pressure bearing key, and the free end of the pressure bearing spring is abutted with the longitudinal sinking groove of the cross wheel linkage piece.

10. A rotary joint according to claim 9, wherein:

the periphery of the pressure bearing key is provided with a limiting boss, and the limiting boss is movably arranged in the first movable cavity.