CN212751296U - Secondary interlocking connector - Google Patents

Abstract

The utility model relates to the technical field of connectors, in particular to a secondary interlocking connector, which comprises a plug component, a socket component and a handle, wherein the handle is hinged on the plug component and is provided with a first latch, the socket component is provided with a second latch, and the first latch and the second latch can be meshed with each other in the direction vertical to the plugging direction; a first locking structure and a second locking structure are arranged between the handle and the plug assembly, the handle can only rotate after the first locking structure and the second locking structure are unlocked, the operation is convenient, the reliability is high, the sheet type terminal adopts a stamping structure, the current carrying capacity is stronger, the temperature rise is lower, and the electrical conductivity is better; the contact spring piece adopts a double-wave structure, so that more contact points are provided, and the contact area is larger; the inserted sheet adopts ultrasonic bonding with the cable is connected, and the reliability is high.

Description

Secondary interlocking connector

Technical Field

The utility model relates to a connector technical field, concretely relates to connector of secondary interlocking.

Background

Electric vehicles are increasingly paid more attention from various automobile manufacturers due to the characteristics of wide energy sources, quiet running, no pollution emission and the like, and household electric vehicles are launched in many times.

The connection between electric automobile and the stake of charging is generally realized through the connector. The connector generally includes plug assembly and socket subassembly, and one of them installs in electric automobile, and another person installs in filling electric pile, and it can to connect the circular telegram with plug assembly plug socket subassembly when needing to charge. During the charging process, if the plug assembly and the socket assembly are loosened or unexpectedly pulled out, normal charging is affected, and a safety hazard exists, so that a locking mechanism is generally required to be arranged for temporarily locking the plug assembly and the socket assembly. The existing locking mechanism is unstable, and the plug assembly and the socket assembly are easy to loosen under the vibration condition.

In addition, the terminal assembly in the existing connector, which is generally cylindrical, is crimped with the cable, and has poor reliability, low manufacturing efficiency, high cost, few contact points between the male end and the female end, and increased temperature under the same current-carrying condition. In addition, the outer shell of the existing connector generally adopts a metal shell, so that the connector is heavy in weight, inconvenient to use and high in cost.

Disclosure of Invention

There is above-mentioned part or whole technical problem to prior art, the utility model provides a connector of secondary interlocking that difficult pine takes off, the security performance is high.

In order to achieve the above object, the utility model provides a following technical scheme:

the connector comprises a plug assembly, a socket assembly and a handle, wherein the handle is hinged to the plug assembly and provided with a first latch, the socket assembly is provided with a second latch, and the first latch and the second latch can be meshed with each other in a direction perpendicular to the plugging direction; be equipped with first locking structure and second locking structure between handle and the plug subassembly, only after first locking structure and the equal unblock of second locking structure, the handle just can rotate.

Preferably, the first locking structure comprises a pre-tightening clamping protrusion arranged on the plug assembly and a pre-tightening clamping groove arranged on the handle, and the pre-tightening clamping protrusion is detachably embedded in the pre-tightening clamping groove.

Preferably, the second locking structure comprises a sliding block slidably mounted on the handle and a locking hole formed in the plug assembly, and the sliding block can be inserted into the locking hole to clamp the handle to the plug assembly.

Preferably, the plug assembly is provided with a cam-shaped projection, the handle is provided with a non-circular groove, the projection penetrates through the non-circular groove, and the rotation amplitude of the handle is limited by the projection.

Preferably, the plug assembly includes a plug housing and a male terminal, the male terminal is sheet-shaped and fixed in the plug housing, and the handle is hinged to the plug housing.

Preferably, the socket assembly comprises a socket shell and a female terminal assembly, the female terminal assembly is arranged in the socket shell and comprises a terminal main body and contact spring pieces, the contact spring pieces are also U-shaped, two end portions of the terminal main body are U-shaped and are respectively inserted with the contact spring pieces, the male terminal can be inserted into one of the contact spring pieces and is pressed by the contact spring pieces, the other contact spring piece is inserted with a sheet female terminal, and the female terminal is welded with the peripheral cable by ultrasonic waves.

Preferably, the contact spring is provided with a wavy elastic strip, and the elastic strip is provided with more than two elastic contacts.

Preferably, the terminal main body is provided with a positioning groove, the contact elastic piece is provided with a positioning flange, and the positioning flange is embedded into the positioning groove.

Preferably, the terminal main body comprises two metal bodies, the middle parts of the two metal bodies are mutually riveted and fixed, and the end parts of the two metal bodies are bent towards the direction away from each other.

Preferably, the plug housing and the socket housing are both plastic housings.

The utility model has the advantages that:

the utility model discloses a connector of secondary interlocking, the second latch through the first latch of handle and socket subassembly is intermeshing in perpendicular to plug direction, realize the locking of plug subassembly and socket subassembly in the plug direction, and first locking structure and second locking structure have been set up, only after the equal unblock of first locking structure and second locking structure, the handle just can rotate, and then make plug subassembly and socket subassembly just can alternate segregation, the mode of secondary interlocking makes plug subassembly and socket subassembly also difficult pine take off when the vibration, fail safe nature is higher.

In addition, the plug shell and the socket shell are both plastic shells, so that the cost is low and the weight is light. The male terminal and the female terminal are in a sheet shape and are in contact with the wavy contact of the contact spring piece, so that the current-carrying capacity is high, the temperature rise is lower, and the conductivity is better.

Drawings

Fig. 1 is a schematic structural view of a secondary interlocking connector in the embodiment.

Fig. 2 is a front view of the secondary interlocking connector in the embodiment.

Fig. 3 is a sectional view taken along a-a in fig. 2.

Fig. 4 is a schematic structural view of the plug assembly and the handle in combination in the embodiment.

Fig. 5 is a schematic structural diagram of a socket assembly in an embodiment.

Fig. 6 is an exploded view of the plug assembly and handle in an embodiment.

Fig. 7 is an exploded view of the receptacle assembly in an embodiment.

Fig. 8 is a schematic structural view of a female terminal assembly in an embodiment.

Fig. 9 is an exploded view of a female terminal assembly in an embodiment.

Fig. 10 is a cross-sectional view of a female terminal assembly incorporating a female terminal in an embodiment.

Reference numerals:

the plug comprises a plug component 1, a plug shell 11, a pre-tightening clamping protrusion 111, a lock hole 112, a protrusion 113 and a male terminal 12;

the socket assembly 2, the socket housing 21, the second latch 211, the female terminal assembly 22, the terminal body 221, the positioning slot 2211, the metal body 2212, the contact spring piece 222, the elastic strip 2221, the positioning flange 2222, and the female terminal 23;

the handle 3, the first latch 31, the pre-tightening clamping groove 32, the sliding block 33 and the non-circular groove 34.

Detailed Description

The present invention will be described in detail with reference to the following embodiments and accompanying drawings.

The connector of secondary interlocking of this embodiment, as shown in fig. 1 to 10, including plug subassembly 1, socket subassembly 2 and handle 3, handle 3 articulates in plug subassembly 1, handle 3 is equipped with first latch 31, socket subassembly 2 is equipped with second latch 21, under last lock-up state, first latch 31 and second latch 21 mesh each other in the perpendicular to plug direction, realize the locking of plug subassembly 1 and socket subassembly 2 in the plug direction, and be locked respectively by first locking structure and second locking structure between handle 3 and the plug subassembly 1, only after first locking structure and the equal unblock of second locking structure, handle 3 just can rotate, and then make plug subassembly 1 and socket subassembly 2 just can the alternate segregation, the mode of secondary interlocking makes plug subassembly 1 and socket subassembly 2 also difficult pine when the vibration, fail safe nature is higher.

In this embodiment, the first locking structure includes the pre-tightening clamping protrusion 111 disposed on the plug assembly 1 and the pre-tightening clamping groove 32 disposed on the handle 3, the pre-tightening clamping protrusion 111 is detachably embedded in the pre-tightening clamping groove 32, the handle 3 is manually pulled hard, the pre-tightening clamping protrusion 111 can be separated from the pre-tightening clamping groove 32, and unlocking of the first locking structure is achieved. In practice, the pen can be connected with the pen cap by a similar clamping point, and the pen can be unlocked under the operation of applying a certain external force.

In this embodiment, the second locking structure includes the slider 33 slidably mounted on the handle 3 and the locking hole 112 disposed on the plug assembly 1, the sliding stroke of the slider 33 is constrained and will not disengage from the handle 3, and the slider 33 can be inserted into the locking hole 112 to clamp the handle 3 to the plug assembly 1, so that the second locking structure is unlocked after the slider 33 is manually moved out of the locking hole 112.

In this embodiment, the plug assembly 1 is provided with a cam-shaped protrusion 113, the handle 3 is provided with a non-circular slot 34, the contour of which is also like a cam, and the protrusion 113 penetrates through the non-circular slot 34, so that the rotation range of the handle 3 is limited by the protrusion 113.

In this embodiment, the plug assembly 1 includes a plug housing 11 and a male terminal 12, the male terminal 12 is sheet-shaped and fixed in the plug housing 11, and the handle 3 is hinged to the plug housing 11. The socket assembly 2 comprises a socket shell 21 and a female terminal assembly 22, the female terminal assembly 22 is arranged in the socket shell 21, the female terminal assembly 22 comprises a terminal main body 221 and contact elastic pieces 222, the contact elastic pieces 222 are U-shaped, two end portions of the terminal main body 221 are U-shaped and are respectively inserted with the contact elastic pieces 222, the male terminal 12 can be inserted into one of the contact elastic pieces 222 and is pressed by the contact elastic pieces 222, the other contact elastic piece 222 is inserted with a sheet female terminal 23, and the female terminal 23 is welded with a peripheral cable through ultrasonic waves, so that a stable integrated structure is achieved. The contact spring sheet 222 is provided with the wavy elastic strip 2221, the elastic strip 2221 is provided with more than two elastic contacts, the problems of few contact points and small contact area are solved, the current-carrying capacity is effectively improved under the condition of the same sectional area, the temperature rise is reduced, the space required by the circular terminal is less than that of the traditional circular terminal under the condition of ensuring the creepage gap, and the circular terminal is formed by adopting a stamping mode, is suitable for mass production and has lower cost.

Further, the terminal main body 221 is provided with a positioning slot 2211, the contact spring piece 222 is provided with a positioning flange 2222, and the positioning flange 2222 is embedded into the positioning slot 2211, so as to prevent the contact spring piece 222 from being separated from the terminal main body 221. The terminal main body 221 includes two metal bodies 2212, the middle portions of the two metal bodies 2212 are riveted to each other, and the end portions of the two metal bodies 2212 are bent in a direction away from each other to form a U shape.

In this embodiment, the plug housing 11 and the socket housing 21 are both plastic housings, which is light in weight and low in cost.

It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims (10)

1. A secondary interlocking connector, comprising: the plug assembly comprises a plug assembly, a socket assembly and a handle, wherein the handle is hinged to the plug assembly and provided with a first latch, the socket assembly is provided with a second latch, and the first latch and the second latch can be meshed with each other in a direction perpendicular to the plugging direction; be equipped with first locking structure and second locking structure between handle and the plug subassembly, only after first locking structure and the equal unblock of second locking structure, the handle just can rotate.

2. The secondary interlocking connector of claim 1, wherein: the first locking structure comprises a pre-tightening clamping protrusion arranged on the plug assembly and a pre-tightening clamping groove arranged on the handle, and the pre-tightening clamping protrusion is detachably embedded in the pre-tightening clamping groove.

3. A secondary interlocking connector as claimed in claim 1 or 2 wherein: the second locking structure comprises a sliding block which can be slidably arranged on the handle and a locking hole which is arranged on the plug assembly, and the sliding block can be embedded into the locking hole to tightly clamp the handle on the plug assembly.

4. The secondary interlocking connector of claim 1, wherein: the plug assembly is provided with a cam-shaped bulge, the handle is provided with a non-circular groove, the bulge penetrates through the non-circular groove, and the rotation amplitude of the handle is limited by the bulge.

5. The secondary interlocking connector of claim 1, wherein: the plug assembly comprises a plug shell and a male terminal, the male terminal is sheet-shaped and fixed in the plug shell, and the handle is hinged to the plug shell.

6. The secondary interlocking connector of claim 5, wherein: the socket assembly comprises a socket shell and a female terminal assembly, the female terminal assembly is arranged in the socket shell and comprises a terminal main body and contact spring pieces, the contact spring pieces are also U-shaped, the two end parts of the terminal main body are U-shaped and are respectively inserted with the contact spring pieces, a male terminal can be inserted into one of the contact spring pieces and is pressed by the contact spring pieces, the other contact spring piece is inserted with a flaky female terminal, and the female terminal is welded with a peripheral cable by ultrasonic waves.

7. The secondary interlocking connector of claim 6, wherein: the contact spring is provided with a wavy elastic strip, and the elastic strip is provided with more than two elastic contacts.

8. The secondary interlocking connector of claim 6, wherein: the terminal main body is provided with a positioning groove, the contact elastic piece is provided with a positioning flanging, and the positioning flanging is embedded into the positioning groove.

9. The secondary interlocking connector of claim 6, wherein: the terminal main body comprises two metal bodies, the middle parts of the two metal bodies are riveted and fixed mutually, and the end parts of the two metal bodies are bent towards the directions away from each other.

10. The secondary interlocking connector of claim 6, wherein: the plug shell and the socket shell are both plastic shells.

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