Explosion-proof socket

Abstract

The utility model provides an explosion-proof socket which is characterized in that the explosion-proof socket comprises a socket bottom shell, a top cover is arranged on the socket bottom shell, and a wiring terminal is arranged in the socket bottom shell; the interlocking switch is positioned in the socket bottom shell; the auxiliary switch is arranged on the interlocking switch; a rotatable trigger rod is arranged on the interlocking switch and can be in contact with the auxiliary switch, a port for clamping the interlocking switch is formed in the socket bottom shell, the outer end of the interlocking switch is connected with a plug, and the plug is mechanically connected with the interlocking switch. Through mechanical connection of the plug and the interlocking switch, mechanical limiting is formed, and falling is prevented.

Description

Technical Field

[0001] The utility model relates to an explosion-proof socket. Background Art

[0002] The explosion-proof plug consists of a plug and a socket, and is mainly used in chemical industry, various mines, petroleum and places that require explosion protection. However, at present, the connection between the plug and the socket in the explosion-proof plug is not firm and is easy to fall off, resulting in direct contact between the inside of the explosion-proof plug and the air, which is easy to cause an explosion and is very dangerous. Moreover, the existing explosion-proof plug has a relatively small scope of use or a single use. Content of the Utility Model

[0003] The purpose of the utility model is to address the above problems existing in the prior art and propose an explosion-proof socket, which forms a mechanical limit through the mechanical connection between the plug and the interlock switch to prevent falling off.

[0004] The purpose of the utility model can be achieved by the following technical solutions: An explosion-proof socket, characterized in that it includes:

[0005] A socket bottom shell, on which there is a top cover, and the socket bottom shell is internally provided with a terminal block;

[0006] An interlock switch, which is located inside the socket bottom shell;

[0007] An auxiliary switch, which is installed on the interlock switch;

[0008] The interlock switch is provided with a rotatable trigger rod which can contact the auxiliary switch. A port for the interlock switch to be snap-fitted is opened on the socket bottom shell. The outer end of the interlock switch is connected with a plug, and the plug is mechanically connected with the interlock switch.

[0009] Further, a signal indicator light connected to the internal terminal block is provided on the top cover.

[0010] Further, a protruding trigger key is provided on the plug. An interlock groove and a limit locking pin are provided at the outermost end of the interlock switch. The trigger key is snapped into the interlock groove and the plug is inserted inward until the trigger key abuts against the limit locking pin.

[0011] Further, a sealing rib is provided at the connection between the top cover and the socket bottom shell.

[0012] Further, the socket bottom shell and the top cover have a stepped design and a reinforcing rib is provided at the covering part.

[0013] Further, the top cover and the socket bottom shell are fixedly connected by screws.

[0014] Compared with the prior art, the advantages of this application are: It forms a mechanical limit through the mechanical connection between the plug and the interlock switch to prevent falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of a socket;

[0016] Figure 2 is a schematic cross-sectional view of the socket;

[0017] Figure 3 is a schematic diagram of the plug not inserted

[0018] Figure 4 is a schematic diagram of the sealing rib;

[0019] Figure 5 is a schematic diagram of the interlock switch;

[0020] Figure 6 is a top view of the top cover removed;

[0021] In the figure, 1 is the top cover; 11 is the signal indicator light; 111 is the sealing rib; 2 is the socket bottom shell; 21 is the stepped design; 3 is the plug; 31 is the trigger key; 4 is the interlock switch; 41 is the trigger rod; 42 is the interlock groove; 43 is the limit locking pin; 44 is the auxiliary switch. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following are specific embodiments of the present invention and in combination with the drawings, the technical solutions of the present invention will be further described.

[0023] As Figure 1-6 shown, an explosion-proof socket, characterized in that it comprises:

[0024] A socket bottom shell 2, with a top cover 1 provided on the upper cover, and the socket bottom shell 2 is provided with a terminal block inside;

[0025] An interlock switch 4, which is located inside the socket bottom shell 2;

[0026] An auxiliary switch 44, which is installed on the interlock switch 4;

[0027] The interlock switch 4 is provided with a rotatable trigger rod 41 and the trigger rod 41 can contact the auxiliary switch 44. A port for the interlock switch 4 to be snap-fitted is opened on the socket bottom shell 2. The outer end of the interlock switch 4 is connected to a plug 3, and the plug 3 is mechanically connected to the interlock switch 4.

[0028] Further, the top cover 1 is provided with a signal indicator light 11 connected to the internal terminal block. Signal indication function: Having a signal display lamp connected to the main circuit can realize the display of the local circuit state, so as to increase the visibility of the equipment state and better judge the equipment state.

[0029] Further, a protruding trigger key 31 is provided on the plug 3. An interlock groove 42 and a limit locking pin 43 are provided at the outermost end of the interlock switch 4. The trigger key 31 is snapped into the interlock groove 42 and the plug 3 is inserted inward until the trigger key 31 abuts against the limit locking pin 43. Interlock switch 4: It is necessary for the plug 3 to be completely inserted into the outer end of the interlock switch 4, so that the trigger key 31 of the plug 3 passes through the interlock groove 42 and is inserted inward until the trigger key 31 abuts against the limit locking pin 43 of the socket, so as to drive the internal switch of the socket to rotate 45° to the right together to complete the closing operation of the switch. At this time, the trigger key 31 of the plug 3 and the interlock switch 4 form a mechanical limit, so that the plug 3 cannot be pulled out in the energized position, and the plug 3 can only be reset to the 0° position (power-off position) before it can be pulled out and separated from the socket.

[0030] Auxiliary switch 44: When the interlock switch 4 makes a rotating action, the trigger rod 41 of the auxiliary switch 44 installed on the rotating part of the interlock switch 4 is linked, and then the auxiliary switch 44 is triggered to give a corresponding early action signal, so as to transmit the signal to the control center for identification and monitor the local circuit state.

[0031] Further, a sealing rib 111 is provided at the connection between the top cover 1 and the socket bottom shell 2. High sealing performance: By setting the sealing rib 111, the sealing performance of the product is enhanced, and the high sealing performance is achieved by enhancing the structural strength of the sealing part and guiding the volume deformation of the sealing part.

[0032] Further, the socket bottom shell 2 and the top cover 1 have a stepped design 21 and reinforcing ribs are provided at the joint.

[0033] Further, the top cover 1 and the socket bottom shell 2 are fixedly connected by screws.

[0034] The above technical solution of the present invention provides a solution significantly different from the prior art for the technical problem that the prior art solution is too single. The parts not involved in the technical solution of this application are the same as the prior art or can be implemented by the prior art, and will not be elaborated here.

[0035] The technical solutions in the above embodiments have clearly and completely described the content of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Claims

1. An explosion-proof socket, characterized in that it Comprising: A socket bottom case, an upper cover is provided with a top cover, and the socket bottom case has terminal blocks inside; An interlock switch, which is located inside the socket bottom case; An auxiliary switch, which is installed on the interlock switch; A rotatable trigger rod is provided on the interlock switch and the trigger rod can contact the auxiliary switch. A port for the interlock switch to be snap-fitted is opened on the socket bottom case. A plug is connected to the outer end of the interlock switch, and the plug is mechanically connected to the interlock switch.

2. An explosion-proof socket according to claim 1, characterized in that: A signal indicator light connected to the internal terminal block is provided on the top cover.

3. An explosion-proof socket according to claim 1, characterized in that: A protruding trigger key is provided on the plug. An interlock groove and a limit locking pin are provided at the outermost end of the interlock switch. The trigger key is snapped into the interlock groove and the plug is inserted inward until the trigger key abuts against the limit locking pin.

4. An explosion-proof socket according to claim 1, characterized in that: A sealing rib is provided at the connection between the top cover and the socket bottom case.

5. An explosion-proof socket according to claim 1, characterized in that, The socket bottom case and the top cover have a stepped design with different levels and reinforcing ribs are provided at the closing part.

6. The explosion-proof socket according to claim 1, characterized in that, The top cover and the socket bottom case are fixedly connected by screws.

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