Quick-plug electric connector with explosion-proof function

Abstract

The utility model discloses a quick-plug electric connector with an explosion-proof function. The quick-plug electric connector comprises a socket and an adaptive plug which are in plug-in fit, the socket comprises a socket shell, the socket shell is assembled on corresponding equipment through a rear end connecting part, the socket shell is provided with at least two socket contact bodies, a high-low position difference exists between the socket contact bodies, and the height of the position difference is h2; the outer edge of the high-position contact body is provided with an insulating part. According to the electric connector, the plug end can be safely inserted into the socket end, the contact piece on the socket end is arranged to have a high-low position difference, and the insulating part is arranged on the outer edge of the high-position contact piece, so that when the plug end is inserted into the socket end, the high-position contact piece is inserted firstly and enters an insulating environment, and then the low-position contact piece is inserted; high temperature or electric sparks at the joint when the contact elements are inserted simultaneously are avoided, explosion is effectively prevented, and the safety is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of connectors, and particularly relates to a quick-insert electrical connector with explosion-proof function. Background Art

[0002] An electrical connector consists of a fixed-end electrical connector, i.e., the socket end, and a free-end electrical connector, i.e., the plug end. The socket is fixed on the electrical component through its square (round) plate, and the plug is generally connected to a cable, and the plug and socket are connected through a connecting nut. The electrical connector consists of three basic units: a housing, an insulator, and a contact. The existing electrical connector consists of an interface sealing body, a wire sealing body, etc., to keep the pins and sockets in the set positions and make the contacts electrically insulated from each other and from the housing. Sealing measures are obtained through the insulator plus the interface sealing body and the wire sealing body to improve the environmental resistance of the electrical connector.

[0003] Since the contacts on the socket protrude from the insulator, during actual operation, the contacts on the plug contact the contacts on the socket before the insulator. In the case of large current operation, short circuit at the connection of the electrical connector may cause high temperature or electric spark, resulting in accidents. Therefore, researching a way to ensure an insulating environment before the contacts at both ends of the socket and the plug contact is one of the important problems that the current electrical connector needs to solve. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a quick-insert electrical connector with explosion-proof function. By setting the contacts in the plug end as contacts with a height difference, and then providing an insulating part on the outer edge of the high-position contact, when the plug end is inserted into the socket end, it first contacts the high-position contact and is insulated, and then inserts into other low-position contacts, ensuring that the contacts in the plug end are in an insulating state when they contact the contacts in the plug end simultaneously, effectively preventing explosion.

[0005] To achieve the above purpose, the specific technical solution of the utility model is as follows:

[0006] A quick-insert electrical connector with explosion-proof function includes a socket and a matching plug for plugging and unplugging; the socket includes a socket housing, the socket housing is assembled on the corresponding device through a rear-end connecting part, at least two socket contacts are arranged on the socket housing, there is a height difference between the socket contacts, and the height difference is h1; an insulating part is arranged on the outer edge of the high-position contact;

[0007] When the socket and the plug are plugged, the plug first contacts the high-position contact on the socket surrounded by the insulating part, and then plugs and conducts electricity with the low-position contact.

[0008] The socket contact is a male end or a female end.

[0009] The height of the insulating part is higher than that of the high-position contact, and the high-position contact is recessed in the insulating part.

[0010] The height difference between the top of the insulating portion and the top of the high-position contact body is h2; h1>h2.

[0011] A positioning groove or a positioning block is set at any position on the circumference of the socket housing, and a positioning block or a positioning groove adapted thereto is set at a corresponding position on the plug housing, so that the plug can be positioned when inserted into the socket.

[0012] The insulating portion is provided with a guide groove, and the guide groove is tapered. The tapered shape extends toward the top of the insulating portion with the high-position contact body as the center.

[0013] The socket housing is provided with a radially movable steel ball, which falls into a locking groove provided on the inner circumference of the plug housing and cooperates with the locking groove for axial blocking after the socket and the plug are plugged into place.

[0014] The outer side of the plug housing is sleeved with a locking top block which is movably arranged along the axial direction. After the steel ball falls into the locking groove, the locking top block radially restricts the steel ball from escaping from the locking groove.

[0015] The locking top block is arranged on the locking sleeve, and a reset spring is arranged between the locking sleeve and the plug housing.

[0016] The utility model has the following advantages:

[0017] 1) The electrical connector provided in this application has a plug end that can be safely inserted into the socket end. By setting the contacts on the socket end to have a height difference and providing an insulating portion on the outer edge of the high-position contact body, when the plug end is inserted into the socket end, it is inserted into the high-position contact body first and then into the insulating environment before inserting the low-position contact body. This avoids high temperatures or electric sparks at the connection point caused by inserting the contacts simultaneously, effectively preventing explosions and providing high safety.

[0018] 2) The electrical connector provided in this application has a plug that can be quickly and securely inserted into a socket. Steel ball holes are evenly arranged around the circumference of the socket-end housing, with steel balls positioned in the steel ball holes. A retaining groove corresponding to the position of the socket-end steel ball holes is provided on the inner wall of the plug-end housing, and a resilient opening retaining ring is provided in the retaining groove. The inner wall of the connecting sleeve has an inclined surface that tilts outward to the left, as well as a retaining groove that cooperates with the steel ball holes to retain the steel ball.

[0019] 3) The electrical connector provided in the present application has a plug that can be quickly and accurately inserted into the socket. By setting a positioning block or positioning groove at any position on the circumference of the socket shell, and providing a corresponding positioning groove or positioning block on the inner wall of the plug shell, the plug can be quickly positioned by inserting along the positioning groove or positioning block during insertion. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a cross-sectional structural diagram of the socket of the present utility model;

[0021] Figure 2 This is the sectional structure diagram of the plug of the present utility model. Specific embodiments

[0022] In order to better understand the purpose, structure and function of the present utility model, the following further describes in detail an moxibustion device of the present utility model with reference to the accompanying drawings.

[0023] Embodiment

[0024] As Figures 1 to 2 shown, a quick-insert electrical connector with explosion-proof function includes a socket 1 and a matching plug 2 that are inserted and mated. The socket 1 includes a socket housing 11, and the socket housing 11 is assembled on the corresponding device through a rear-end connecting portion. At least two socket contact bodies 12 are provided on the socket housing 11, and the socket contact bodies 12 can be male or female ends; there is a height difference between the socket contact bodies 12, that is, it includes a high-position contact body 121 and a low-position contact body, and the height difference is h1; and an insulating portion 3 is provided on the outer edge of the high-position contact body 121.

[0025] The plug 2 includes a plug contact body 22 that is adapted to the socket contact body 12. When the plug contact body 22 is inserted into the socket contact body 12, the power connection is achieved.

[0026] It should be noted that in order to ensure an insulating environment when the plug contact body 22 is inserted into the socket contact body 12, the height of the insulating portion 3 is higher than that of the high-position contact body 121, that is, the high-position contact body 121 is recessed in the insulating portion 3, and the height difference between the top of the insulating portion 3 and the top of the high-position contact body 121 is h2; to ensure that when the plug contact body 22 is inserted into the high-position contact body 121 of the socket contact body 12, it first enters the insulating portion 3, that is, it first enters the insulating environment and then inserts into the contact body, and h1>h2, thereby improving safety.

[0027] In order to ensure the accuracy of the position where the plug 2 is inserted into the socket 1, the present application provides a positioning groove or a positioning block at any position on the circumference of the socket housing 11, and a positioning block or a positioning groove adapted thereto is provided at the corresponding position on the plug housing 21, so as to achieve positioning when the plug 2 is inserted into the socket 1.

[0028] Furthermore, in order to ensure the accuracy of the position where the plug contact 22 is inserted into the socket contact 12, the present application provides a guiding groove 31 in the insulating portion 3. The guiding groove 31 is conical, and the cone extends from the high-position contact body 121 to the top of the insulating portion 3. When the plug contact 22 needs to be inserted into the socket contact 12, the plug contact 22 can slide down along the guiding groove 31 to align with the position of the high-position contact body 121, which is fast and efficient.

[0029] The plug 2 includes a plug housing 21 that mates with the socket housing 11. Steel balls 4 are arranged on the socket housing 11 to be movable radially. After the socket 1 and the plug 2 are inserted in place, the steel balls 4 fall into locking grooves 211 formed on the inner circumferential surface of the plug housing 21 and are axially engaged with the locking grooves 211, thereby achieving axial locking after the socket 1 and the plug 2 are plugged together. At this time, the steel balls 4 and the locking grooves 211 are in interference fit. In order to maintain the axial locking state, a locking top block 23 that is axially movable is sleeved outside the plug housing 21. The locking top block 23 radially restricts the steel balls 4 from disengaging from the locking grooves 211 after the steel balls 4 fall into the locking grooves 211. The locking top block 23 and the plug housing 21 together form a housing component.

[0030] Furthermore, the locking top block 23 is arranged on a locking sleeve, and a return spring 24 is assembled between the locking sleeve and the plug housing 21.

[0031] During mating, the plug housing 21 is pushed so that the front end of the internal contact 25 thereof is inserted into the high-position contact body 121 of the socket 1 along the guiding groove 31 for guiding. An insulating portion 3 is provided on the outer edge of the high-position contact body 121. At this time, an insulating environment exists between the socket 1 and the plug 2. As the plug 2 is continuously pushed forward, the plug contact is connected to the low-position contact body of the socket, and the connection of the connector is completed.

[0032] Meanwhile, the steel balls 4 are lifted by the locking top block 23 on the plug housing 21 and protrude from the outer wall of the plug housing 11. As the plug housing 21 is pushed forward, the steel balls 4 are pressed into the locking grooves 211, and the return spring 24 is compressed, and the socket 1 and the plug 2 are axially locked.

[0033] When the plug 2 needs to be pulled out, the plug housing 21 is pressed down to misalign the locking top block 23 and the steel balls 4, and the steel balls 4 disengage from the locking grooves 211 and return to their original positions; the return spring 24 rebounds, causing the plug 2 to disengage from the socket 1.

[0034] It can be understood that the present utility model is described through some embodiments. Those skilled in the art know that without departing from the spirit and scope of the present utility model, various changes or equivalent replacements can be made to these features and embodiments. Additionally, under the teaching of the present utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present utility model.

Claims

1. A quick-plug electrical connector with explosion-proof function, characterized in that: The invention comprises a plug-matched socket (1) and a matching plug (2); the socket (1) comprises a socket housing (11), the socket housing (11) is assembled on a corresponding device through a rear end connection portion, at least two socket contacts (12) are provided on the socket housing (11), and there is a height difference between the socket contacts (12), and the height of the height difference is h1; an insulating portion (3) is provided on the outer edge of the high-position contact (121); When the socket (1) and the plug (2) are connected, the plug (2) first contacts the high-position contact body (121) on the socket (1) and is surrounded by the insulating portion (3), and then connects with the low-position contact body to be energized.

2. The quick-plug electrical connector with explosion-proof function according to claim 1, characterized in that: The socket contact body (12) is a male end or a female end.

3. The quick-plug electrical connector with explosion-proof function according to claim 1, characterized in that: The height of the insulating portion (3) is higher than that of the high-position contact body (121), and the high-position contact body (121) is recessed into the insulating portion (3).

4. The quick-plug electrical connector with explosion-proof function according to claim 1 or 3, characterized in that: The height difference between the top of the insulating portion (3) and the top of the high-position contact body (121) is h2; h1>h2.

5. The quick-plug electrical connector with explosion-proof function according to claim 1, characterized in that: A positioning groove or a positioning block is set at any position on the circumference of the socket housing (11), and a positioning block or a positioning groove adapted thereto is set at a corresponding position on the plug housing (21), so that the plug (2) can be positioned when inserted into the socket (1).

6. The quick-plug electrical connector with explosion-proof function according to claim 1, characterized in that: The insulating portion (3) is provided with a guide groove (31), the guide groove (31) is tapered, and the tapered portion extends toward the top of the insulating portion (3) with the high-position contact body (121) as the center.

7. The quick-plug electrical connector with explosion-proof function according to claim 1, characterized in that: The socket housing (11) is provided with a radially movable steel ball (4). After the socket (1) and the plug (2) are plugged into place, the steel ball (4) falls into a locking groove (211) provided on the inner circumferential surface of the plug housing (21) and is axially stopped by the locking groove (211).

8. The quick-plug electrical connector with explosion-proof function according to claim 7, characterized in that: The outer side of the plug housing (21) is provided with a locking top block (23) that is movably arranged in the axial direction. After the steel ball (4) falls into the locking groove (211), the locking top block (23) radially restricts the steel ball (4) from falling out of the locking groove (211).

9. The quick-plug electrical connector with explosion-proof function according to claim 8, characterized in that: The locking top block (23) is arranged on the locking sleeve, and a return spring (24) is installed between the locking sleeve and the plug housing (21).

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