Explosion-proof voltage transformer

Abstract

The utility model discloses an explosion-proof voltage transformer which comprises a transformer body and a cable, a fixing sleeve is fixed on the transformer body, the cable connected with the transformer body extends into the fixing sleeve, the fixing sleeve is connected with a sleeve block through threads, a through hole is formed in the sleeve block, an elastic abutting block is fixed in the through hole, and the elastic abutting block is fixed on the transformer body. The abutting block clamps and fixes the cable in the center of the through hole, and the sleeve block and the device body are fixed through a connecting piece. According to the utility model, under the action of the abutting block of the sleeve block, the cable can be clamped in the center of the through hole of the sleeve block, so that even if the cable is pulled, the cable does not move randomly in the through hole, the phenomenon that the connection part of the cable and the device body is easily broken due to stress is avoided, and the cable is safer to use.

Description

Technical Field

[0001] The utility model relates to the technical field of voltage transformers, in particular to an explosion-proof voltage transformer. Background Art

[0002] When an explosion-proof voltage transformer is installed, its cables will inevitably be pulled and bent during connection. However, when the cables of the transformer are pulled and bent to a large extent, the electrical connection stability between the cables and the transformer will be affected.

[0003] Moreover, the traditional explosion-proof voltage transformer lacks a structure for protecting the cable joints. Therefore, the traditional voltage transformer is improved to avoid the above-mentioned problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an explosion-proof voltage transformer to solve the above problems.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] An explosion-proof voltage transformer includes a body and a cable. A fixing sleeve is fixed on the body, and a cable connected to the body extends into the fixing sleeve. The fixing sleeve is connected with a sleeve block by a thread, and a through hole is formed in the sleeve block. An elastic abutting block is fixed in the through hole, and the cable is clamped and fixed at the center of the through hole by the abutting block. The sleeve block and the body are fixed by a connecting piece.

[0007] Preferably, the connecting piece includes an annular groove formed in the sleeve block. A circular ring is slidably connected to the annular groove. A clamping rod is fixed on the circular ring and penetrates through a circular hole formed in the sleeve block. A clamping groove corresponding to the circular hole is formed on the body. A spring is sleeved on the annular groove. The sleeve block is also provided with a cooperating piece for cooperating with the bending of the cable.

[0008] Preferably, a sliding groove is formed in the annular groove, and a sliding block slidably connected to the sliding groove is fixed on the circular ring.

[0009] Preferably, one end of the spring is fixedly connected to the inner side wall of the annular groove, and the other end is fixedly connected to the circular ring.

[0010] Preferably, a plurality of clamping grooves are circumferentially and equally angularly distributed on the body with the center of the fixing sleeve as the axis.

[0011] Preferably, the cooperating piece includes a connecting ring fixed to the end of the sleeve block. The connecting ring is connected with a connecting sleeve by a thread. An arc-shaped groove is formed in the connecting sleeve, and an elastic rubber gasket protrudes from a part of the arc-shaped groove in contact with the cable.

[0012] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0013] 1. With the action of the abutting block of the sleeve block, the cable can be clamped at the center of the through hole of the sleeve block. Therefore, even if the cable is pulled, it will not move randomly within the through hole. Thus, the part where the cable is connected to the device body will not easily have problems such as open circuit due to stress, and the use of the cable is safer.

[0014] 2. Under the elastic force of the spring, the clamping rod penetrates through the round hole and extends into the clamping groove opened on the device body, so that the sleeve block cannot rotate under force, effectively avoiding the influence on the cable caused by the accidental rotation of the sleeve block under force. Therefore, the sleeve block can provide a more stable protection effect on the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Shows a schematic diagram of the overall structure of a voltage transformer provided according to an embodiment of the present utility model;

[0016] Figure 2 Shows a schematic diagram of a partial structure of a voltage transformer provided according to an embodiment of the present utility model;

[0017] Figure 3 Shows a schematic diagram of the separation of each part of the sleeve block provided according to an embodiment of the present utility model.

[0018] LEGEND DESCRIPTION:

[0019] 1. Device body; 2. Fixed sleeve; 3. Clamping groove; 4. Sleeve block; 5. Through hole; 6. Annular groove; 7. Slide groove; 8. Abutting block; 9. Ring; 10. Slide block; 11. Clamping rod; 12. Spring; 13. Connecting ring; 14. Connecting sleeve; 15. Arc groove; 16. Round hole; 17. Cable. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Embodiment 1:

[0022] The present utility model provides a technical solution. Please refer to Figures 1-3 :

[0023] An explosion-proof voltage transformer includes a transformer body 1 and a cable 17. A fixing sleeve 2 is fixed on the transformer body 1, and the cable 17 connected to the transformer body 1 extends into the fixing sleeve 2. The fixing sleeve 2 is threadedly connected with a sleeve block 4, and a through hole 5 is formed in the sleeve block 4. An elastic abutting block 8 is fixed in the through hole 5, and the abutting block 8 clamps and fixes the cable 17 at the center of the through hole 5. The sleeve block 4 and the transformer body 1 are fixed by a connecting member. A plurality of abutting blocks 8 are circumferentially and equally angularly distributed in the through hole 5 with the center of the through hole 5 as the axis. Therefore, when the cable 17 passes through the through hole 5, the cable 17 is located at the center of the through hole 5, so the cable 17 does not abut against the sleeve block 4. And the abutting block 8 has a certain elasticity, so the abutting block 8 can clamp the cable 17 to prevent the cable 17 from being pulled forcefully and being unstablely connected to the transformer body 1.

[0024] Embodiment 2:

[0025] Basically the same as the technical solution of Embodiment 1, the difference is that, as Figure 3 shown, the connecting member includes an annular groove 6 formed in the sleeve block 4, and a circular ring 9 is slidably connected to the annular groove 6. A clamping rod 11 is fixed on the circular ring 9, and the clamping rod 11 passes through a circular hole 16 formed in the sleeve block 4. A clamping groove 3 corresponding to the circular hole 16 is formed on the transformer body 1. A spring 12 is sleeved on the annular groove 6, and the sleeve block 4 is also provided with a cooperating member for cooperating with the bending of the cable 17. A sliding groove 7 is formed in the annular groove 6, and a sliding block 10 slidably connected to the sliding groove 7 is fixed on the circular ring 9. One end of the spring 12 is fixedly connected to the inner side wall of the annular groove 6, and the other end is fixedly connected to the circular ring 9. A plurality of clamping grooves 3 are circumferentially and equally angularly distributed on the transformer body 1 with the center of the fixing sleeve 2 as the axis. With the cooperation of the sliding block 10 and the sliding groove 7, the circular ring 9 can only move in the annular groove 6, so that the clamping rod 11 can accurately pass through the circular hole 16 and extend into the clamping groove 3.

[0026] Embodiment 3:

[0027] Basically the same as the technical solution of Embodiment 1, the difference is that, as Figure 3 shown, the cooperating member includes a connecting ring 13 fixed to the end of the sleeve block 4, and the connecting ring 13 is threadedly connected to a connecting sleeve 14. An arc-shaped groove 15 is formed in the connecting sleeve 14, and an elastic rubber gasket protrudes from a part of the arc-shaped groove 15 in contact with the cable 17. When the cable 17 needs to be bent, the cable 17 can be bent into the arc-shaped groove 15, so that the excessive force of the cable 17 abutting against the connecting sleeve 14 and resulting in excessive extrusion of the cable 17 can be avoided.

[0028] In summary, in this embodiment, after the connecting sleeve 14 and the connecting ring 13 are threadedly connected, the cable 17 is passed through the through hole 5, and the cable 17 is clamped by the abutting block 8. Then the cable 17 is connected to the transformer body 1 through the fixing sleeve 2.

[0029] After the cable 17 is connected to the device body 1, the ring 9 can be pushed to move, so that the clamping rod 11 retracts into the round hole 16. The sleeve block 4 is threadedly connected to the fixed sleeve 2, and at this time the clamping rod 11 is aligned with the corresponding card slot 3 on the device body 1. Release the thrust on the ring 9. Under the elastic force of the spring 12, the ring 9 moves until the clamping rod 11 is engaged with the card slot 3 through the round hole 16. At this time, the sleeve block 4 is fixed to the device body 1, and the sleeve block 4 cannot be forced to rotate and break away from the fixed sleeve 2. When the cable 17 needs to be bent, the cable 17 needs to be bent to the arc-shaped groove 15 in the connecting sleeve 14, so as to prevent the cable 17 from being squeezed and damaged by the connecting sleeve 14 when bent.

[0030] The above description of the embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An explosion-proof voltage transformer, comprising a body (1) and a cable (17), characterized in that, A fixing sleeve (2) is fixed on the body (1), and a cable (17) connected to the body (1) extends into the fixing sleeve (2). The fixing sleeve (2) is threadedly connected with a sleeve block (4), and a through hole (5) is formed in the sleeve block (4). An elastic abutting block (8) is fixed in the through hole (5), and the abutting block (8) clamps and fixes the cable (17) at the center of the through hole (5). The sleeve block (4) and the body (1) are fixed by a connecting member.

2. The explosion-proof voltage transformer according to claim 1, wherein The connecting member includes an annular groove (6) formed in the sleeve block (4), and a circular ring (9) is slidably connected to the annular groove (6). A clamping rod (11) is fixed on the circular ring (9), and the clamping rod (11) penetrates through a circular hole (16) formed in the sleeve block (4). A clamping groove (3) corresponding to the circular hole (16) is formed in the body (1). A spring (12) is sleeved on the annular groove (6). The sleeve block (4) is further provided with a cooperating member for cooperating with the bending of the cable (17).

3. The explosion-proof voltage transformer according to claim 2, wherein, A sliding groove (7) is formed in the annular groove (6), and a sliding block (10) slidably connected to the sliding groove (7) is fixed on the circular ring (9).

4. An explosion-proof voltage transformer according to claim 2, characterized in that, One end of the spring (12) is fixedly connected to the inner side wall of the annular groove (6), and the other end is fixedly connected to the circular ring (9).

5. An explosion-proof voltage transformer according to claim 2, characterized in that, A plurality of the clamping grooves (3) are circumferentially and equally angularly distributed on the body (1) with the center of the fixing sleeve (2) as the axis.

6. An explosion-proof voltage transformer according to claim 2, characterized in that, The cooperating member includes a connecting ring (13) fixed at the end of the sleeve block (4), and the connecting ring (13) is threadedly connected with a connecting sleeve (14). An arc-shaped groove (15) is formed in the connecting sleeve (14), and an elastic rubber gasket protrudes from a part of the arc-shaped groove (15) in contact with the cable (17).

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