CN216203186U

CN216203186U - Rotary connection structure and lamp

Info

Publication number: CN216203186U
Application number: CN202120953075.7U
Authority: CN
Inventors: 方志芳
Original assignee: Huizhou Topband Electronic Technology Co Ltd
Current assignee: Huizhou Topband Electronic Technology Co Ltd
Priority date: 2021-05-06
Filing date: 2021-05-06
Publication date: 2022-04-05
Anticipated expiration: 2031-05-06

Abstract

The utility model is suitable for the field of object rotation connection, and provides a rotary connection structure and a lamp. Wherein, swivelling joint structure includes: the rotating shaft is used for rotationally connecting the first rotating piece and the second rotating piece; teeth which are arranged on the first rotating piece or the second rotating piece and are continuously arranged around the axis of the rotating shaft; the pushing piece is movably arranged on the second rotating piece or the first rotating piece, one end of the pushing piece extends into a space between two adjacent teeth and is abutted against the teeth, and a pushing point of the pushing piece is eccentrically arranged with the center of the rotating shaft; the pre-tightening piece is arranged on the second rotating piece or the first rotating piece and provides pre-tightening force extending into the space between the two adjacent teeth for the pushing piece. The rotary connection structure provided by the utility model can not generate a virtual position when an object rotates, so that the shaking phenomenon can be avoided, the structure is compact, and the connection is stable.

Description

Rotary connection structure and lamp

Technical Field

The utility model belongs to the field of object rotation connection, and particularly relates to a rotary connection structure and a lamp.

Background

The rotary connection structure is applied to occasions needing angle adjustment, and comprises an electrodeless adjustment type and an electrodeless adjustment type. In the polar adjustment type rotary connection structure, some of the connection structures adopt a way of matching teeth with the ejector pins to enable an object to have a gear-like rotation function in rotation, and the axial center of the rotating shaft (10) and the stress direction of the ejector pins (20) of the connection structure (see fig. 5) are on the same straight line, namely the circle center of the rotation track of the rotation point (the stress position of the ejector pins) is concentrically arranged with the center of the rotating shaft, so that the structure has the following defects: the stress point of the thimble is located at the middle between two adjacent teeth on the rotating shaft (valley formed by the two teeth), during the rotating process, no matter the thimble rotates in the first direction or rotates in the opposite direction to the first direction, two sides of the thimble often rub against the teeth to be worn away by the teeth (the OD and OE lines in fig. 5 are schematic positions after being worn away), so that gaps are generated between the two sides of the thimble facing the teeth and the teeth, and then the rotating shaft can generate a virtual position shaking defect when rotating to any gear, and along with the extension of the working time of the rotating shaft, two matched teeth are worn more seriously, and the virtual position shaking defect generated when the two matched teeth are rotated to any gear is more serious, so that the structure is not compact and the connection is unstable.

SUMMERY OF THE UTILITY MODEL

The utility model provides a rotary connection structure, and aims to solve the problem that in the prior art, virtual and false rotation is easy to generate to cause shaking.

The present invention is achieved as such, a rotary joint structure comprising:

the rotating shaft is used for rotationally connecting the first rotating piece and the second rotating piece;

teeth which are arranged on the first rotating piece or the second rotating piece and are continuously arranged around the axis of the rotating shaft;

the pushing piece is movably arranged on the second rotating piece or the first rotating piece, one end of the pushing piece extends into a space between two adjacent teeth and is abutted against the teeth, and a pushing point of the pushing piece is eccentrically arranged with the center of the rotating shaft;

the pre-tightening piece is arranged on the second rotating piece or the first rotating piece and provides pre-tightening force extending into the space between the two adjacent teeth for the pushing piece.

Further, the second rotates the piece or first rotation piece and is equipped with the holding tank, push up the piece the pretension piece all is located in the holding tank, push up the piece and can move in the holding tank.

Further, be equipped with spacing portion on the top pushing member, the pretensioning piece is arranged in spacing portion with between the holding tank.

Further, the tooth extends along the axis of the rotating shaft, and the pushing piece is matched with the length of the tooth along the extending direction of the rotating shaft.

Furthermore, inclined surfaces are arranged on two sides of the pushing piece, which are positioned on two adjacent teeth, and the cambered surfaces on the two sides are excessive.

Furthermore, the teeth are arranged in the middle of one side of the first rotating part, which is connected with the second rotating part; or the middle part of the side of the second rotating member connected with the first rotating member.

Furthermore, the teeth are distributed on one side of the first rotating part or the second rotating part, which faces the outside, at the connecting position around the rotating shaft.

The utility model also provides a lamp which comprises a support, a lamp holder and the rotary connecting structure, wherein the support and the lamp holder are rotatably connected through the rotating shaft, the teeth are arranged on the support or the lamp holder, and the pushing piece and the pre-tightening piece are arranged on the lamp holder or the support.

The utility model has the advantages that the pushing point of the pushing piece is eccentrically arranged with the center of the rotating shaft, so that when the pushing piece extends between two adjacent teeth, the end part of the pushing piece is abutted against one adjacent tooth, and the other tooth is abutted against the side surface of the pushing piece, therefore, when the first rotating piece or the second rotating piece rotates, no matter the first rotating piece or the second rotating piece rotates in a first direction or a second direction opposite to the first direction, the tooth only generates friction on the end part of the pushing piece, when the rotating piece is used for a certain time, the end part of the pushing piece only generates abrasion, and under the action of the pre-tightening piece, the pushing piece can always abut against the tooth, so that the problem of shaking caused by virtual position can be avoided.

Drawings

FIG. 1 is a schematic structural diagram of a lamp according to the present invention;

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

FIG. 3 is an enlarged view at B in FIG. 2;

FIG. 4 is an exploded view of a lamp according to the present invention;

fig. 5 is a schematic view of a prior art swivel connection.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

According to the utility model, the pushing point of the pushing piece is eccentrically arranged with the center of the rotating shaft, so that when the pushing piece extends between two adjacent teeth, the end part of the pushing piece is abutted against one adjacent tooth, and the other tooth is abutted against the side surface of the pushing piece, therefore, when the first rotating piece or the second rotating piece rotates, no matter the first rotating piece or the second rotating piece rotates in a first direction or a second direction opposite to the first direction, the tooth only can generate friction on the end part of the pushing piece, when the pushing piece is used for a certain time, the end part of the pushing piece is only abraded, and under the action of the pre-tightening piece, the pushing piece can always abut against the teeth, so that the problem of shaking caused by virtual position can be avoided.

Example one

Referring to fig. 1 to 3, an embodiment of the present invention provides a rotary connection structure including a rotary shaft 3, teeth 4, an ejector 5, and a preload member 6. The rotating shaft 3 is used for rotatably connecting a first rotating piece (which can be a lamp holder 2 or a support 1 described below) and a second rotating piece (which can be a support 1 or a lamp holder 2 described below), the teeth 4 are arranged on the first rotating piece or the second rotating piece and are continuously arranged around the axis of the rotating shaft 3, the pushing piece 5 is movably arranged on the second rotating piece or the first rotating piece, one end of the pushing piece 5 extends into a space between two adjacent teeth 4 and is abutted against the teeth 4, the pushing point of the pushing piece 5 is eccentrically arranged with the center of the rotating shaft 3, and the pre-tightening piece 6 is arranged on the second rotating piece or the first rotating piece and provides pre-tightening force extending into the space between the two adjacent teeth 4 for the pushing piece 5.

Through the top thrust point that sets up ejector 5 with the eccentric settings in center of axis of rotation 3, when making ejector 5 stretch into between two adjacent teeth 4, the tip of ejector 5 and adjacent tooth 4 butt, another tooth 4 then with the side butt of ejector 5, so, first rotation piece or second rotate the piece when rotating, whether rotate toward the first direction or toward the second direction rotation opposite with the first direction, tooth 4 only can produce the friction to the tip of ejector, after using the certain time, also only can produce wearing and tearing at the tip of ejector 5, and under the effect of pretensioning piece 6, ejector 5 can all the time with tooth 4 butt, so can avoid producing the virtual position and lead to the problem of rocking.

The specific principle is as follows: referring to fig. 3, when the first rotating member and the second rotating member are in the initial state (not rotated with each other but in the folded state), the pushing member 5 is provided with a tendency to move in the direction a under the action of the preload member 6, the pushing member 5 abuts against the first tooth 4a, the first tooth 4a pushes the pushing member 5 to generate a reaction force in the direction b, when the first rotating member rotates in the counterclockwise direction in fig. 3, the first tooth 4a compresses the pushing member 5 in the direction b and moves in the direction opposite to the direction a so that the first tooth 4a can pass over the pushing member 5 to make the second tooth 4b abut against the pushing member 5, the second tooth 4b abuts against the pushing member 5 and also generates a reaction force in the direction b against the pushing member 5, and the first tooth 4a generates an abutting force in the direction c against the pushing member 5, so that the pushing member 5 is firmly clamped between the first tooth 4a and the second tooth 4b, and because in the rotation process, only the tip of the ejector 5 rubs with tooth 4, the tip wearing and tearing back preload piece 6 of the ejector 5 can make the ejector 5 with tooth 4 butt all the time, and adopt this kind of scheme, can avoid producing the virtual position and producing and rock the phenomenon between first tooth 4a and ejector 5, between second tooth 4b and the ejector 5.

The rotary connection structure provided by the utility model can not generate a virtual position when an object rotates, so that the shaking phenomenon can be avoided, the structure is compact, and the connection is stable.

Example two

Referring to fig. 3, on the basis of the first embodiment, further, the second rotating member or the first rotating member is provided with an accommodating groove 7, the pushing member 5 and the pre-tightening member 6 are both arranged in the accommodating groove 7, and the pushing member 5 can move in the accommodating groove 7, so that the pushing member 5 can be stably installed in the second rotating member or the first rotating member.

Referring to fig. 4, further, the pushing member 5 is provided with a limiting portion 51, and the preload member 6 is disposed between the limiting portion 51 and the receiving groove 7. So, pretension piece 6 can be extruded in order to produce the pretightning force that moves outside holding tank 7 to ejector 5 by spacing portion 51 and holding tank 7 to make ejector 5 all the time with tooth 4 butt.

Specifically, the limiting portion 51 may be a boss disposed on the outer wall of the pushing member 5, or may be the bottom of the pushing member 5 facing the accommodating groove.

Referring to fig. 1, further, the teeth 4 extend along the axis of the rotating shaft 3 to increase the length of the teeth 4 in the direction of the axis of the rotating shaft 3, and the pushing member 5 is matched with the length of the teeth 4 in the direction of the axis of the rotating shaft 3, so that the stressed areas of the pushing member 5 and the teeth 4 can be increased, and the stressed strength of the teeth 4 and the pushing member 5 can be improved.

Referring to fig. 4, further, the pushing member 5 is provided with inclined surfaces 5a at two sides of two adjacent teeth 4, and the arc surfaces between the inclined surfaces 5a at two sides are excessive. The inclined surface 5a is arranged, so that the pushing piece 5 can conveniently extend into the space between two adjacent teeth 4, the arc surface is excessive, the contact area between the pushing piece 5 and the teeth 4 can be increased, and the abrasion is reduced.

Referring to fig. 1, further, the teeth 4 are provided in the middle of the side of the first rotating member connected to the second rotating member; or in the middle of the side of the second rotating member connected to the first rotating member. Therefore, the stress points of the pushing piece 5 and the teeth 4 are positioned in the middle of the first rotating piece or the second rotating piece, so that the purpose of stress balance is achieved.

Referring to fig. 3, further, the teeth 4 are distributed on one side of the connection position of the first rotating member or the second rotating member facing to the outside around the rotating shaft 3, so that the distribution of the teeth 4 can be reduced to reduce the processing cost, and the matching effect of the pushing member 5 and the teeth 4 can be achieved, and meanwhile, the rotation of the first rotating member and the rotation of the second rotating member are not interfered.

EXAMPLE III

The utility model also provides a lamp which comprises a support 1, a lamp cap 2 and the rotary connection structure, wherein the support 1 and the lamp cap 2 are rotatably connected through a rotating shaft 3, teeth 4 are arranged on the support 1 or the lamp cap 2, and a pushing piece 5 and a pre-tightening piece 6 are arranged on the lamp cap 2 or the support 1.

The lamp provided by the embodiment has the advantages that the lamp holder 2 cannot generate a virtual position when rotating relative to the support 1, so that the phenomenon of shaking can be avoided, the structure is compact, and the connection is stable.

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 utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A rotary joint structure, comprising:

2. The rotary joint structure according to claim 1, wherein the second rotary member or the first rotary member is provided with a receiving groove, and the pushing member and the preload member are both provided in the receiving groove, and the pushing member is movable in the receiving groove.

3. The rotatable connecting structure according to claim 2, wherein the pushing member is provided with a stopper portion, and the preload member is interposed between the stopper portion and the receiving groove.

4. The rotatable connection of claim 1 wherein said teeth extend along an axis of said rotatable shaft, said pusher being adapted to the length of said teeth in the direction of extension of said rotatable shaft.

5. The rotatable connection of claim 1, wherein the pushing member is provided with inclined surfaces on both sides of two adjacent teeth, and the curved surfaces on both sides are in transition.

6. The rotary connection structure according to claim 1, wherein the teeth are provided in a middle portion of a side of the first rotating member to which the second rotating member is connected; or the middle part of the side of the second rotating member connected with the first rotating member.

7. The rotary connection structure according to claim 1, wherein the teeth are distributed around a rotary shaft on a side of the first rotating member or the second rotating member where the first rotating member or the second rotating member is connected to face outward.

8. A lamp comprising a bracket, a lamp head and the rotary connection structure as claimed in any one of claims 1 to 7, wherein the bracket and the lamp head are rotatably connected by the rotating shaft, the teeth are disposed on the bracket or the lamp head, and the pushing member and the preload member are disposed on the lamp head or the bracket.