阅读说明：本技术 一种自锁插头 (Self-locking plug ) 是由 冯晨宇 刘蕾 杨艳芝 李强 于 2020-06-02 设计创作，主要内容包括：本发明涉及电连接器技术领域,一种自锁插头,包括插头壳体1、连接螺帽2、压紧垫片3、弹簧、压紧螺帽5、接触件和绝缘体组件7,插头壳体1中段外环面上设有环形第一凸台101,连接螺帽2套装在插头壳体1上,连接螺帽2中段内壁具有环形第二凸台201,压紧螺帽5与第一凸台101之间设置有弹簧和压紧垫片3,第一凸台101靠近压紧螺帽5侧的端面上设有环绕该端面排列的第一防松齿1011,压紧垫片3在其与第一凸台101相抵接的端面上设有环绕该端面排列的第二防松齿301,通过压紧螺帽5与弹簧对啮合的第一防松齿1011、第二防松齿301挤压形成自锁,其具有分离力矩大、密封性能佳优点。(The invention relates to the technical field of electric connectors, in particular to a self-locking plug which comprises a plug shell 1, a connecting nut 2, a pressing gasket 3, a spring, a pressing nut 5, a contact element and an insulator component 7, wherein an annular first boss 101 is arranged on the outer annular surface of the middle section of the plug shell 1, the connecting nut 2 is sleeved on the plug shell 1, an annular second boss 201 is arranged on the inner wall of the middle section of the connecting nut 2, the spring and the pressing gasket 3 are arranged between the pressing nut 5 and the first boss 101, first anti-loosening teeth 1011 arranged around the end surface are arranged on the end surface of the first boss 101 close to the side of the pressing nut 5, second anti-loosening teeth 301 arranged around the end surface are arranged on the end surface of the pressing gasket 3 abutted against the first boss, the self-locking structure has the advantages of large separation moment and good sealing performance by extruding the first anti-loosening teeth 1011 and the second anti-loosening teeth 301 which are meshed through the compression nut 5 and the spring.)

1. A self-locking plug, characterized in that: the plug comprises a plug shell (1), a connecting nut (2), a compression gasket (3), a spring, a compression nut (5), a contact element and an insulator component (7), wherein the main body of the plug shell (1) is tubular, the insulator component (7) and the contact element for realizing electric signal connection are arranged in the plug shell (1), an annular first boss (101) is arranged on the outer annular surface of the middle section of the plug shell (1), the connecting nut (2) is sleeved on the plug shell (1), the main body of the connecting nut (2) is tubular, an annular second boss (201) is arranged on the inner wall of the middle section of the connecting nut (2), the first boss (101) is abutted against the second boss (201), the compression nut (5) is in threaded connection with the tail end of the connecting nut (2), and the spring and the compression gasket (3) are arranged between the compression nut (5) and the first boss (101), the end face, close to gland nut (5), of first boss (101) is provided with first anti-loosening teeth (1011) arranged around the end face, and gland washer (3) is provided with second anti-loosening teeth (301) arranged around the end face on the end face abutted against first boss (101), and through gland nut (5) and spring extrude first anti-loosening teeth (1011) and second anti-loosening teeth (301) which are meshed to form self-locking.

2. The self-locking plug of claim 1, wherein: the contact is a jack assembly, the jack assembly includes a jack (6) and a protective sleeve (61) mounted on the jack (6).

3. The self-locking plug of claim 1, wherein: the spring is a disc spring (4), and the disc spring (4) is arranged between the pressing gasket (3) and the pressing nut (5).

4. The self-locking plug of claim 1, wherein: the socket is characterized in that the insulator assembly (7) comprises an interface sealing body (71), a front insulator (72), a rear insulator (73) and a wire sealing body (74), wherein the interface sealing body (71), the front insulator (72), the rear insulator (73) and the wire sealing body (74) are axially arranged along the socket shell, the jack assembly is fixed in the insulator assembly (7) through a clamping jaw (12), a first key groove is formed in the insulator assembly (7), a second key groove is formed in the inner wall of the plug shell (1), and the insulator assembly (7) is matched with the second key groove through a key (13) bonded in the first key groove to prevent the insulator assembly (7.

5. The self-locking plug of claim 1, wherein: the outer ring surface of the pressing gasket (3) is provided with 3 positioning keys (302) at equal intervals, the outer ring surface of the pressing nut (5) is provided with 3 key grooves (501) corresponding to the positioning keys, and the positioning keys (302) of the pressing gasket (3) are respectively arranged in the key grooves (501) of the pressing nut (5).

6. The self-locking plug of claim 1, wherein: and a shielding ring (8) is also arranged between the plug shell (1) and the connecting nut (2).

7. The self-locking plug of claim 1, wherein: be equipped with first annular on first boss (101), be provided with rubber ring (9) in the first annular.

8. The self-locking plug of claim 1, wherein: the plug shell (1) is provided with a second annular groove at the joint of the plug shell and the compression nut (5), and a sealing ring (10) is arranged in the second annular groove.

9. The self-locking plug of claim 1, wherein: a friction gasket (11) is arranged between the first boss (101) and the second boss (201).

10. The self-locking plug of claim 1, wherein: the plug shell (1) is provided with a third boss (102), and the third boss (102) is used for limiting the axial position of the compression nut (5).

Technical Field

The invention relates to the technical field of electric connectors, in particular to a self-locking plug.

Background

In order to improve the connection performance of a threaded connection type electric connector product and ensure that a plug and a socket of the connector still keep reliable connection in environments such as vibration, impact and the like, the anti-loosening function of the product needs to be realized by adding a fuse or a fastening nail and the like after the plug and the socket are connected, the above operation method is complex and tedious, and therefore a self-locking plug which is simple in structure, convenient to operate and capable of ensuring reliable connection of the product after butt joint by means of a self mechanical structure is urgently needed.

Disclosure of Invention

In order to solve the problems, the invention provides a self-locking plug which has the advantages of large separation moment and good sealing performance.

In order to achieve the purpose, the invention adopts the technical scheme that: a self-locking plug comprises a plug shell, a connecting nut, a pressing gasket, a spring, a pressing nut, a contact and an insulator component, wherein the main body of the plug shell is tubular, the insulator component and the contact for realizing electric signal connection are arranged in the plug shell, an annular first boss is arranged on the outer annular surface of the middle section of the plug shell, the connecting nut is sleeved on the plug shell, the main body of the connecting nut is tubular, an annular second boss is arranged on the inner wall of the middle section of the connecting nut, the first boss is abutted against the second boss, the pressing nut is in threaded connection with the tail end of the connecting nut, the spring and the pressing gasket are arranged between the pressing nut and the first boss, first anti-loosening teeth arranged around the end surface are arranged on the end surface of the first boss, which is close to the side of the pressing nut, second anti-loosening teeth arranged around the end surface are arranged on the end surface of, and the self-locking is formed by extruding the first anti-loosening tooth and the second anti-loosening tooth which are meshed through the compression nut and the spring.

Preferably, the contact member is a socket assembly including a socket and a protective sleeve mounted on the socket.

Preferably, the spring is a disc spring, and the disc spring is arranged between the pressing gasket and the pressing nut.

Preferably, the insulator assembly comprises an interface sealing body, a front insulator, a rear insulator and a wire sealing body, the interface sealing body, the front insulator, the rear insulator and the wire sealing body are axially arranged along the socket shell, the jack assembly is fixed in the insulator assembly through a clamping jaw, a first key groove is formed in the insulator assembly, a second key groove is formed in the inner wall of the plug shell, and the insulator assembly prevents the insulator assembly from rotating through the matching of a key bonded in the first key groove and the second key groove.

Preferably, the outer ring surface of the pressing gasket is provided with 3 positioning keys at equal intervals, the outer ring surface of the pressing nut is provided with 3 key slots corresponding to the positioning keys, and the positioning keys of the pressing gasket are respectively arranged in the key slots of the pressing nut.

Preferably, a shielding ring is further disposed between the plug housing and the connection nut.

Preferably, a first annular groove is formed in the first boss, and a rubber ring is arranged in the first annular groove.

Preferably, the plug housing is provided with a second annular groove at a connection position of the plug housing and the compression nut, and a sealing ring is arranged in the second annular groove.

Preferably, a friction gasket is arranged between the first boss and the second boss.

Preferably, the plug housing is provided with a third projection for defining the axial position of the compression nut

The beneficial effects of the invention are as follows: the compression amount of the disc spring is determined by matching the compression nut and the connecting nut, and meanwhile, the disc spring applies pressure between the compression gasket and the plug shell, so that the first anti-loosening teeth on the plug shell are meshed with the second anti-loosening teeth on the compression gasket, and the self-locking function of a product is realized; the rubber ring arranged in the first boss ring groove and the upper sealing ring arranged in the second boss ring groove are respectively matched with the connecting nut and the compression nut in the radial direction, so that the sealing performance of the plug is enhanced; the friction gasket arranged between the plug shell and the connecting nut reduces the abrasion of the shell and the connecting nut when the plug is connected or separated.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of an insulator assembly of the present invention;

FIG. 3 is a schematic structural view of the socket assembly of the present invention;

FIG. 4 is a schematic structural view of a plug housing according to the present invention;

FIG. 5 is a schematic view of the construction of the pressure washer of the present invention;

FIG. 6 is a schematic view of the compression nut of the present invention;

FIG. 7 is a schematic structural diagram of a disc spring according to the present invention;

the reference numerals include:

1-plug shell, 101-first boss, 1011-first anti-loose tooth, 102-third boss, 2-connecting nut, 201-second boss, 3-pressing gasket, 301-second anti-loose tooth, 302-positioning key, 4-disc spring, 5-pressing nut, 501-key groove, 6-jack, 61-protective sleeve, 7-insulator component, 71-interface sealing body, 72-front insulator, 73-rear insulator, 74-wire sealing body, 8-shielding ring, 9-rubber ring, 10-sealing ring, 11-friction gasket, 12-claw and 13-key.

Detailed Description

The present invention is described in detail below with reference to the attached drawings.

As shown in fig. 1-7, a self-locking plug comprises a plug housing 1, a connection nut 2, a pressure washer 3, a spring, a pressure nut 5, a contact element and an insulator assembly 7, wherein a main body of the plug housing 1 is tubular, the plug housing 1 is internally provided with the insulator assembly 7 and the contact element for realizing electrical signal connection, an annular first boss 101 is arranged on an outer circumferential surface of a middle section of the plug housing 1, the connection nut 2 is sleeved on the plug housing 1, the main body of the connection nut 2 is tubular, an annular second boss 201 is arranged on an inner wall of the middle section of the connection nut 2, the first boss 101 abuts against the second boss 201, the pressure nut 5 is in threaded connection with a tail end of the connection nut 2, the spring and the pressure washer 3 are arranged between the pressure nut 5 and the first boss 101, a plurality of first anti-loose teeth 1011 arranged around the end surface are arranged on an end surface, the end face of the pressing gasket 3, which is abutted against the first boss 101, is provided with a plurality of second anti-loosening teeth 301 which are arranged around the end face, the second anti-loosening teeth 301 and the first anti-loosening teeth 1011 are mutually inserted into gaps between the teeth of the opposite side, and the self-locking is formed by extruding the first anti-loosening teeth 1011 and the second anti-loosening teeth 301 which are meshed through the pressing nut 5 and the spring. When the gland nut 5 is screwed, the disc spring 7 in the gland nut 5 is extruded between the first boss 101 and the gland nut 5, so that the disc spring 7 provides thrust for the gland washer 5, the gland washer is tightly attached to the first boss 101, the first anti-loosening teeth 1011 and the second anti-loosening teeth 301 are tightly meshed, and the effects of small connecting torque and large separating torque are realized through the difference of angles of two sides of the anti-loosening teeth, so that the self-locking function of the plug is realized.

The contact is a socket assembly comprising a socket 6 and a protective sleeve 61 mounted on the socket 6. The protective sleeve 61 is used for preventing the contact bodies with different specifications from being mistakenly inserted during butt joint.

The spring is a disc spring 4, the disc spring 4 is arranged between the pressing gasket 3 and the pressing nut 5, and other springs with equivalent functions can be adopted in other embodiments.

The insulator assembly 7 comprises an interface sealing body 71, a front insulator 72, a rear insulator 73 and a wire sealing body 74 which are arranged along the axial direction of the socket shell, the jack 6 assembly is fixed in the insulator assembly 7 through a clamping claw 12, a first key groove is formed in the insulator assembly 7, a second key groove is formed in the inner wall of the plug shell 1, and the insulator assembly 7 prevents the insulator assembly 7 from rotating through the matching of a key 13 which is bonded in the first key groove and the second key groove.

The outer annular surface of the pressing gasket 3 is provided with 3 positioning keys 302 at equal intervals, the outer annular surface of the pressing nut 5 is provided with 3 key grooves 501 corresponding to the positioning keys, and the positioning keys 302 of the pressing gasket 3 are respectively arranged in the key grooves 501 of the pressing nut 5. The design facilitates the positioning of the compression gasket 3 and the compression nut 5, and simultaneously fixes the axial position and the radial position of the compression gasket 3 through the matching of the positioning key 302 and the key groove 501.

Still be provided with shielding ring 8 between plug housing 1 and connection nut 2, shielding ring 8 has improved the shielding performance of product.

The first boss 101 is provided with a first annular groove, and the first annular groove is internally provided with a rubber ring 9, so that the sealing performance of the plug can be increased.

The plug shell 1 is provided with a second annular groove at the joint of the plug shell and the compression nut 5, and a sealing ring 10 is arranged in the second annular groove, so that the sealing performance of the plug can be improved.

A friction gasket 11 is arranged between the first boss 101 and the second boss 201, so that abrasion of contact surfaces of the first boss 101 and the second boss 201 during plug connection and disconnection is avoided.

The plug housing 1 is provided with a third boss 102, the third boss 102 is used for limiting the axial position of the compression nut 5, and simultaneously, the distance between the compression nut 5 and the first boss 101 after the compression nut 5 and the connecting nut 2 are screwed can be measured, so that the specification parameters of the compression gasket 3 and the disc spring 4 can be conveniently set.

The foregoing is only a preferred embodiment of the present invention, and many variations in the detailed description and the application range can be made by those skilled in the art without departing from the spirit of the present invention, and all changes that fall within the protective scope of the invention are therefore considered to be within the scope of the invention.