阅读说明：本技术 一种旋转压紧自锁结构 (Rotary compression self-locking structure ) 是由 习冰寒 李立新 刘向阳 张志中 韩云钊 王恒 于 2019-11-25 设计创作，主要内容包括：一种旋转压紧自锁结构,包括设于连接器壳体内的绝缘体、与该绝缘体相扣合从而将接触件安装在连接器壳体内的绝缘压板,还包括与绝缘压板旋转配合从而实现自锁并用于对绝缘压板轴向限位的旋转挡圈,旋转挡圈后端面沿顺时针或逆时针方向均布设置多个旋配键,绝缘压板前端面开设有与旋配键旋转配合的斜面槽以及位于斜面槽同一侧并与旋配键锁止配合的定位槽。本发明通过绝缘压板和旋转挡圈之间相对转动装配实现两者构成的自锁刚体轴向总长度增加,最终实现两者间的锁定配合及装配,避免卡簧取卸时对连接器壳体表面镀层损伤,通过旋配键落入定位槽时提供明确到位的手感使得旋转挡圈安装到位易于判断,还具有多次取卸功能以便后期维护。(The utility model provides a rotatory auto-lock structure that compresses tightly, including locating the insulator in the connector housing, thereby install the insulating clamp plate in the connector housing with this insulator looks lock, thereby still include with insulating clamp plate swivelling fit realize the auto-lock and be used for to insulating clamp plate axial spacing rotatory retaining ring, rotatory retaining ring rear end face sets up a plurality of keys of joining in marriage soon along clockwise or anticlockwise equipartition, insulating clamp plate preceding terminal surface seted up with join in marriage soon key swivelling fit inclined plane groove and lie in inclined plane groove with one side and with join in marriage key locking complex constant head tank soon. The invention realizes the increase of the axial total length of the self-locking rigid body formed by the insulating pressure plate and the rotary check ring through the relative rotating assembly between the insulating pressure plate and the rotary check ring, finally realizes the locking fit and assembly between the insulating pressure plate and the rotary check ring, avoids the damage to the coating on the shell surface of the connector when the clamp spring is taken out and disassembled, provides a clear and in-place hand feeling when the rotary fit key falls into the positioning groove, ensures that the rotary check ring is installed in place and is easy to judge, and also has the function of.)

1. The utility model provides a rotatory auto-lock structure that compresses tightly, is thereby installed the contact member at the insulating clamp plate in the connector housing including locating the insulator in the connector housing, with this insulator looks lock, its characterized in that: thereby still include with insulating clamp plate rotation cooperation realize the auto-lock and be used for to insulating clamp plate axial spacing rotatory retaining ring.

2. The rotary compacting self-locking structure of claim 1, wherein: rotatory retaining ring rear end face sets up a plurality of keys of joining in marriage soon along clockwise or anticlockwise equipartition, and insulating clamp plate preceding terminal surface is seted up and is joined in marriage the rotatory complex inclined plane groove of key soon and be located the inclined plane groove with one side and with join in marriage the key locking cooperation soon and carry out the constant head tank fixed with the rotation retaining ring.

3. The rotational compression self-locking structure according to claim 2, wherein: the inclined plane groove is internally provided with a first stroke inclined plane, and the rotary key is provided with a second stroke inclined plane with the inclination direction opposite to that of the first stroke inclined plane.

4. The rotational compression self-locking structure according to claim 3, wherein: an elastic rubber pad sleeved on the contact element is arranged between the insulating pressing plate and the insulator.

5. The rotational compression self-locking structure according to claim 4, wherein: the rotary matching key is screwed into the positioning groove through the inclined plane groove to realize locking between the rotary check ring and the insulating pressing plate, an axial gap is formed between the rear end face of the rotary check ring and the front end face of the insulating pressing plate, and the rotary check ring is abutted against the inner wall of the front end of the connector shell under the action of axial elastic force provided by the elastic rubber pad.

6. The rotational compression self-locking structure according to claim 5, wherein: the outer wall of the rotating retaining ring is circumferentially provided with a plurality of limiting keys, the inner wall of the front end of the connector shell is provided with stopping parts which are matched with the limiting keys in a stopping way and axially limit the rotating retaining ring at intervals, and key grooves for the limiting keys to axially shuttle are formed between the adjacent stopping parts.

7. The rotational compression self-locking structure according to any one of claims 1 to 6, wherein: the connector shell is provided with a limiting groove along the axial direction, and the insulating pressing plate is provided with a rotation stopping key matched with the limiting groove in a rotation stopping way.

8. The rotational compression self-locking structure according to claim 7, wherein: thereby rotatory retaining ring front end is equipped with the mounting hole that supplies the frock application of force drive rotatory retaining ring to rotate.

Technical Field

The invention belongs to the technical field of connectors, and particularly relates to a rotary compression self-locking structure.

Background

In the connector, generally, the insulator 12 and the insulating pressing plate 13 are buckled with each other and then the contact 15 is installed and fixed, the insulating pressing plate 13 is positioned by installing the snap spring 14 in the square disc shell 11, specifically, as shown in fig. 1, a snap spring groove is formed in the inner circle of the square disc shell 1, and the snap spring 14 is automatically opened after being installed in the snap spring groove, so that the insulating pressing plate 13 is fixed. With this structure, there are the following disadvantages: (1) the clamp spring needs a press machine during installation, and the press machine is large in equipment and complex to operate; (2) the snap spring is installed in a direct-pressing mode, and whether the snap spring is in place or not is not easy to judge; (3) the clamp spring is made of high-strength elastic material, and has requirements on the material; meanwhile, when the product has a taking and unloading requirement, the taking and unloading are difficult, and the clamp spring can damage the connector shell in the taking and unloading process, so that other parts are scrapped; therefore, the above prior art scheme has strict requirements on installation conditions, and is not beneficial to normal use under special conditions.

Disclosure of Invention

In order to solve the technical problem, the invention provides a rotary compression self-locking structure, which solves the problem that a clamp spring is installed to damage a coating of a connector shell, is easy to judge when the clamp spring is installed in place, and has the function of convenient repeated disassembly.

The purpose of the invention and the technical problem to be solved are realized by adopting the following technical scheme. The rotary compression self-locking structure comprises an insulator arranged in a connector shell, an insulating pressing plate buckled with the insulator so as to install a contact element in the connector shell, and a rotary check ring which is in rotary fit with the insulating pressing plate so as to realize self-locking and is used for axially limiting the insulating pressing plate.

The object of the invention is further achieved by the following technical measures.

Aforementioned rotatory auto-lock structure that compresses tightly, wherein rotatory retaining ring rear end face sets up a plurality of keys of joining in marriage soon along clockwise or anticlockwise equipartition, and insulating clamp plate preceding terminal surface is seted up and is joined in marriage the rotatory complex inclined plane groove of key soon and be located the inclined plane groove with one side and join in marriage the constant head tank that key locking cooperation was fixed in order to the rotation retaining ring soon.

In the rotary compressing self-locking structure, the inclined plane groove is internally provided with a first stroke inclined plane, and the rotary key is provided with a second stroke inclined plane opposite to the first stroke inclined plane in inclination direction.

In the above rotary compression self-locking structure, an elastic rubber pad sleeved on the contact element is installed between the insulating pressing plate and the insulator.

According to the rotary compression self-locking structure, the rotary matching key is screwed into the positioning groove through the inclined plane groove to lock the rotary check ring and the insulating pressing plate, an axial gap is formed between the rear end face of the rotary check ring and the front end face of the insulating pressing plate, and the rotary check ring is abutted to and pressed on the inner wall of the front end of the connector shell under the action of axial elastic force provided by the elastic rubber pad.

According to the rotary compression self-locking structure, the outer wall of the rotary check ring is circumferentially provided with the plurality of limiting keys, the inner wall of the front end of the connector shell is provided with the stop parts which are matched with the limiting keys in a stop manner and axially limit the rotary check ring at intervals, and the key grooves for the limiting keys to axially shuttle are formed between the adjacent stop parts.

In the rotary compressing self-locking structure, the connector shell is provided with a limit groove along the axial direction, and the insulating pressing plate is provided with a rotation stopping key matched with the limit groove in a rotation stopping manner.

The rotary compression self-locking structure is characterized in that the front end of the rotary check ring is provided with a mounting hole for applying force to the tool to drive the rotary check ring to rotate.

By means of the technical scheme, the self-locking rigid body is assembled in a relative rotation mode through the insulating pressing plate and the rotating check ring, the axial total length of the self-locking rigid body formed by the insulating pressing plate and the rotating check ring is increased after locking and matching are achieved, the insulating pressing plate and the rotating check ring generate a pressure effect under the axial limiting effect of the connector shell and the elastic rubber pad, locking and matching and fixing and assembling of the insulating pressing plate and the rotating check ring are achieved, and the effect of fixing the contact element is achieved. Because replaced conventional jump ring fixed to insulating pressing plate, then avoided installing or getting the problem of unloading in-process to connector housing surface coating damage at the jump ring to can provide the clear feeling that targets in place when falling into the constant head tank through the key of joining in marriage soon, make the installation of rotatory retaining ring target in place easily judge, have the function of getting many times and unloading simultaneously, make things convenient for later maintenance.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic structural diagram of positioning an insulating pressing plate by using a conventional snap spring in the prior art.

Fig. 2 is a perspective view of a rotary compression self-locking structure of the invention.

Fig. 3 is an exploded schematic view of fig. 2.

Fig. 4 is a schematic view of the structure of the insulating platen in the present invention.

Fig. 5 is a schematic structural view of the rotation blocking ring of the present invention.

FIG. 6 is a schematic view of the structure between the rotary retainer ring and the insulating pressing plate when the rotary retainer ring is not rotated in the present invention.

Fig. 7 is a schematic structural diagram between the rotating retainer ring and the insulating pressing plate after rotation in the invention.

Fig. 8 is a structural view of the installation of a rotary compression self-locking structure of the invention.

Fig. 9 is a structural diagram of the rotary compression self-locking structure after the installation is completed.

Fig. 10 is a schematic sectional view of a rotary compression self-locking structure of the present invention after installation.

Detailed Description

The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and preferred embodiments.

Referring to fig. 2 to 5, the present invention provides a rotary compressing self-locking structure, which includes an insulator 22 installed in a connector housing 21, and an insulating pressing plate 23 engaging with the insulator 22 to install a contact in the connector housing, and the improvement point of the present invention is that: the rotary compression self-locking structure further comprises a rotary retainer ring 24 which is in rotary fit with the insulating pressure plate 23 so as to realize self-locking and is used for axially limiting the insulating pressure plate 23; specifically, a plurality of rotary keys 25 are uniformly distributed on the rear end face of the rotary check ring 24 in a clockwise or counterclockwise direction, an inclined plane groove 26 rotationally matched with the rotary key 25 and a positioning groove 27 located on the same side of the inclined plane groove and in locking fit with the rotary key 25 to fix the rotary check ring are formed in the front end face of the insulating pressing plate 23, and the inclined plane groove 26 and the positioning groove 27 are arranged at intervals; a first stroke inclined surface 261 is arranged in the inclined surface groove 26, and a second stroke inclined surface 251 which is opposite to the inclined direction of the first stroke inclined surface 261 is arranged on the rotary key 25, so that the two stroke inclined surfaces are attached to each other and rotate relatively to each other.

In this embodiment, an elastic rubber pad 28 sleeved on the contact element is installed between the insulating pressing plate 23 and the insulator 22, and with reference to fig. 6 and 7, the rotation key 25 is screwed into the positioning groove 27 from the inclined groove 26 to lock the rotation check ring 24 and the insulating pressing plate 23, at this time, an axial gap 29 is formed between the rear end surface of the rotation check ring 24 and the front end surface of the insulating pressing plate 23, and the rotation check ring 24 is tightly pressed against the inner wall of the front end of the connector housing under the axial elastic force provided by the elastic rubber pad 28.

Preferably, a plurality of limit keys 241 are uniformly and convexly arranged on the outer wall of the rotation retaining ring 24 along the circumferential direction, correspondingly, stop parts 211 which are matched with the limit keys 241 in a stop manner and axially limit the rotation retaining ring are arranged on the inner wall of the front end of the connector shell 21 at intervals, and a key groove 212 for the limit key 241 to axially shuttle is formed between the adjacent stop parts 211.

Preferably, the connector housing 21 is provided with a limit groove 213 along the axial direction, the insulating pressing plate 23 is provided with a rotation stop key 231 which is matched with the limit groove 213 in a rotation stop manner, the rotation stop key is aligned with the limit groove during installation, the insulating pressing plate is pushed into the connector housing, and the insulating pressing plate can be prevented from rotating in the radial direction after being installed in place.

Further, referring to fig. 8, the front end of the rotation blocking ring 24 is further provided with a mounting hole 242 for applying force to the tool to drive the rotation blocking ring to rotate, so as to facilitate quick assembly or disassembly of the rotation blocking ring.

In this embodiment, four rotary keys are provided, and four corresponding inclined plane grooves and four corresponding positioning grooves are also provided; the number of the limiting keys is four, the stop part is correspondingly provided with four key slots, and the number of the key slots is also four, wherein the position of the limiting slot is used as one key slot.

The assembly mode and the working principle of the invention are specifically as follows:

referring to fig. 8 to 10, during installation, the insulator 22, the contact 30 and the elastic rubber pad 28 are first installed in the connector housing 21, and then the rotation stop key 231 is aligned with the limiting groove 213, and the insulating pressing plate 23 is pushed into the connector housing 21; then, aligning the limiting key 241 with the key groove 212 and pushing the rotary check ring 24 into the connector housing 21, wherein the rotary matching key 25 falls into the corresponding inclined plane groove 26, and the rear end face of the rotary check ring 24 is attached to the front end face of the insulating pressure plate 23; then, the rotation check ring 24 is rotated by a certain angle (in the embodiment, clockwise rotation is performed as shown in fig. 9), so that the rotation key 25 of the rotation check ring is rotated out from the inclined groove 26, and further, the sharp corner of the inclined surface of the rotation key 25 falls into the positioning groove 27, thereby realizing self-locking and fixing of the rotation check ring. After the rotation of the rotation retainer ring, because only the tip angle of the end part of the rotation retainer ring 25 falls into the positioning groove, the axial size of the self-locking rigid body formed by the matching of the insulation pressing plate 23 and the rotation retainer ring 24 is increased, an axial gap 29 is formed between the insulation pressing plate 23 and the rotation retainer ring 24, the self-locking rigid body can extrude the elastic rubber pad 28 under the limiting action of the stop part 211, and the elastic rubber pad 28 provides axial reaction force to enable the insulation pressing plate 23 and the rotation retainer ring 24 to generate axial pressure action, so that the axial fixing of the insulation pressing plate and the rotation retainer ring is finally realized, and further the contact part is fixed, and the installation of the rotation compression self-locking.

When the rotating check ring 24 needs to be removed, the tool is inserted into the mounting hole 242 of the rotating check ring, a certain axial pressure is applied to the rotating check ring 24, the rotating check ring rotates in the reverse direction, the rotating key 25 of the rotating check ring slides out of the positioning groove 27 and falls into the inclined groove 26 again, the axial force of the insulating pressing plate is released, and the rotating check ring can be removed, so that various parts in the connector can be maintained or replaced conveniently.

The invention solves the problem that the coating of the connector shell is damaged in the process of installing or taking off the snap spring, can provide a clear in-place hand feeling when falling into the positioning groove through the rotary matching key, ensures that the installation of the rotary check ring is in place and is easy to judge, simultaneously has the function of taking off and taking off for many times, and is convenient for later maintenance.

The above description is only a preferred embodiment of the present invention, and any person skilled in the art can make any simple modification, equivalent change and modification to the above embodiments according to the technical essence of the present invention without departing from the scope of the present invention, and still fall within the scope of the present invention.