Small circuit breaker power connection mechanism

Abstract

The utility model relates to the technical field of small circuit breakers, and in particular to a power connection mechanism of a small circuit breaker. Its technical solution includes: a circuit breaker body, both wiring terminals of the circuit breaker body are provided with wiring holes, and both wiring terminals of the circuit breaker body are provided with abutment bolts for fixing cable terminals; both wiring terminals of the circuit breaker body are provided with anti-bending mechanisms to prevent excessive bending of the cable terminals on the sides; and a clamping mechanism for further improving the stability of the cable terminals is provided on the anti-bending mechanism. The utility model extends the cable at the tail of the terminal through the sliding shaft, connecting block, upper pressing block and lower pressing block extending from the anti-bending mechanism, so as to avoid the problem of cable skin rupture or breakage due to excessive bending of the cable near the terminal on the circuit breaker body. At the same time, the stability of the terminal in the circuit breaker body can be improved by extending the fixed cable tail.

Description

Technical Field

[0001] The utility model relates to the technical field of small circuit breakers, in particular to a power connection mechanism of a small circuit breaker. Background Art

[0002] The circuit breaker is an electrical component in circuit safety. It mainly senses whether the circuit is overloaded due to a short circuit, and then disconnects the circuit accordingly. By adding a circuit breaker to the circuit system, fire accidents or other safety accidents caused by short circuit overload can be effectively avoided, greatly improving the safety of the circuit.

[0003] The traditional power connection mechanism of a small circuit breaker has a simple structure and lacks bending protection for the cables exposed on the outside of the circuit breaker. During use, the cable terminals are often excessively bent, causing the surface of the cable terminals to break or even the risk of the terminals breaking and falling off. Summary of the invention

[0004] The purpose of the utility model is to propose a small circuit breaker power connection mechanism to address the problem that the traditional small circuit breaker power connection mechanism in the background technology has a simple structure and lacks bending protection for the cables exposed to the outside of the circuit breaker, which causes the cable terminals to be frequently excessively bent during use, resulting in the risk of surface damage to the cable terminals and even breakage and detachment of the terminals.

[0005] The technical solution of the utility model is as follows: a small circuit breaker power connection mechanism comprises a circuit breaker body, both wiring terminals of the circuit breaker body are provided with wiring holes, and both wiring terminals of the circuit breaker body are provided with abutment bolts for fixing cable wiring heads installed on the tops; both wiring terminals of the circuit breaker body are provided with anti-bending mechanisms for preventing excessive bending of the cable wiring heads; and a clamping mechanism for further improving the stability of the cable wiring heads is installed on the anti-bending mechanism.

[0006] Preferably, the anti-bending mechanism includes four sliding shafts, which are respectively slidably connected in the four corners of the wiring terminal of the circuit breaker body, and the four sliding shafts are commonly fixedly connected with a connecting block. An upper pressure block and a lower pressure block are respectively provided on the side of the connecting block opposite to the sliding shaft, and the lower pressure block is located above the upper pressure block, the upper pressure block is fixedly connected to the connecting block, and a limiting groove is provided on the side of the lower pressure block opposite to the connecting block, and a slider is limitedly slidably connected in the limiting groove, and one end of the slider is fixedly connected to the connecting block, and the opposite ends of the upper pressure block and the lower pressure block are provided with semicircular grooves that are compatible with the wiring hole.

[0007] Preferably, the clamping mechanism includes a receiving groove, which is provided in a semicircular groove on the upper pressure block, a clamping block is slidably connected in the receiving groove, a groove matching the clamping block is provided in the semicircular groove on the lower pressure block, a connecting shaft is fixedly connected to the bottom end of the clamping block, a three-head inner cavity is provided in the upper pressure block, the bottom end of the connecting shaft passes through the three-head inner cavity and is fixedly connected to a piston block, the piston block piston is connected in the three-head inner cavity, the bottom end of the lower pressure block relative to the upper pressure block is fixedly connected to two piston shafts, and the bottom ends of the two piston shafts are respectively piston-connected to the two ends of the three-head inner cavity.

[0008] Preferably, a plurality of springs for facilitating structural resetting are fixedly connected between the top of the piston block and the inner wall of the three-head inner cavity.

[0009] Preferably, opposite ends of the upper pressing block and the lower pressing block are fixedly connected with magnetic blocks with opposite magnetic properties.

[0010] Preferably, a threaded shaft is provided through the top of the lower pressing block, a small bearing is embedded in the lower pressing block, and the inner ring of the small bearing is sleeved and fixed on the threaded shaft, and the bottom end of the threaded shaft extends into the limiting groove and is threadedly connected to the slider.

[0011] Preferably, the maximum rising distance of the sliding block is matched with the moving distance of the clamping block in the groove on the lower pressing block.

[0012] Compared with the prior art, the utility model has the following beneficial technical effects:

[0013] The sliding shaft, connecting block, upper pressing block and lower pressing block extending out of the anti-bending mechanism can extend the cable at the end of the terminal head to protect it, so as to avoid the cable skin cracking or breaking due to excessive bending of the cable near the terminal head on the circuit breaker body. At the same time, the fixed cable tail can be extended to improve the stability of the terminal head in the circuit breaker body.

[0014] By controlling the rotation of the threaded shaft in the clamping mechanism, the slider is driven to move up and down, and then the upper pressure block is driven to move up and down. At this time, it is convenient to adjust the gap between the two semicircular grooves according to the thickness of the cable, thereby satisfying the effect of inserting more cables of different thicknesses. At the same time, it can also improve the cable fixing and clamping effect, and also improve the application range of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Provide a structural schematic diagram of the utility model;

[0016] Figure 2 A partial structural diagram of the utility model is given;

[0017] Figure 3A schematic diagram of the partial structure of the anti-bending mechanism in the utility model is given;

[0018] Figure 4 A partial structural cross-sectional schematic diagram of the anti-bending mechanism and the clamping mechanism in the utility model is given.

[0019] Reference numerals: 1, circuit breaker body; 2, abutment bolt;

[0020] 3. Anti-bending mechanism; 301. Sliding shaft; 302. Connecting block; 303. Upper pressing block; 304. Lower pressing block; 305. Semicircular groove; 306. Limiting groove; 307. Sliding block;

[0021] 4. Clamping mechanism; 401. Storage groove; 402. Clamping block; 403. Connecting shaft; 404. Piston block; 405. Spring; 406. Three-head inner cavity; 407. Piston shaft; 408. Threaded shaft; 409. Small bearing; 5. Magnetic block. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] Example 1

[0024] like Figure 1-4 As shown, the utility model includes a circuit breaker body 1, both wiring terminals of the circuit breaker body 1 are provided with wiring holes, and both wiring terminals of the circuit breaker body 1 are equipped with abutment bolts 2 for fixing cable terminals; both wiring terminals of the circuit breaker body 1 are equipped with anti-bending mechanisms 3 for preventing excessive bending of the cable terminals on the sides; and the anti-bending mechanisms 3 are equipped with clamping mechanisms 4 for further improving the stability of the cable terminals.

[0025] Furthermore, the anti-bending mechanism 3 includes four sliding shafts 301, which are respectively slidably connected to the four corners of the wiring terminal of the circuit breaker body 1, and the four sliding shafts 301 are commonly fixedly connected to a connecting block 302, and the connecting block 302 is respectively provided with an upper pressing block 303 and a lower pressing block 304 on the side opposite to the sliding shaft 301, and the lower pressing block 304 is located above the upper pressing block 303, and the upper pressing block 303 is fixedly connected to the connecting block 302, and a limiting groove 306 is provided on the side of the lower pressing block 304 relative to the connecting block 302, and a slider 307 is limitedly slidably connected in the limiting groove 306, and one end of the slider 307 is fixedly connected to the connecting block 302, and a semicircular groove 303 adapted to the wiring hole is provided on the opposite ends of the upper pressing block 303 and the lower pressing block 304. 5. Through the above arrangement, when it is necessary to insert the cable terminal, it is only necessary to pull out the four sliding shafts 301, and then pass the cable terminal through the two semicircular grooves 305 on the upper pressing block 303 and the lower pressing block 304, and finally insert it into the wiring hole on the circuit breaker body 1, and then press the lower pressing block 304 downward to fix it, so as to achieve the fixed clamping of the tail of the cable terminal. At this time, the extended sliding shaft 301, the connecting block 302, the upper pressing block 303 and the lower pressing block 304 will extend the cable at the tail of the terminal to protect it, so as to avoid the problem of the cable skin being broken or fractured due to excessive bending of the cable near the terminal on the circuit breaker body 1. At the same time, the extended and fixed cable tail can also improve the stability of the terminal in the circuit breaker body 1.

[0026] Furthermore, the clamping mechanism 4 includes a receiving groove 401, which is provided in a semicircular groove 305 on the upper pressure block 303, a clamping block 402 is slidably connected in the receiving groove 401, a groove matching the clamping block 402 is provided in the semicircular groove 305 on the lower pressure block 304, a connecting shaft 403 is fixedly connected to the bottom end of the clamping block 402, a three-head inner cavity 406 is provided in the upper pressure block 303, the bottom end of the connecting shaft 403 passes through the three-head inner cavity 406, and is fixedly connected to a piston block 404, the piston block 404 is connected to the three-head inner cavity 406, and the lower pressure block 304 is fixedly connected to two piston shafts 407 relative to the bottom end of the upper pressure block 303, and the bottom ends of the two piston shafts 407 are piston-connected. It is connected to both ends of the three-head inner cavity 406. Through the above arrangement, when the cable terminal passes through the two semicircular grooves 305 and is inserted into the circuit breaker body 1, the pressing block 304 can be pressed downward so that the pressing block 304 drives the piston shaft 407 to squeeze downward in the three-head inner cavity 406, thereby increasing the air pressure in the three-head inner cavity 406 and pushing the spring 405 to move upward. When the spring 405 moves upward, the clamping block 402 is driven to extend out of the semicircular groove 305 through the connecting shaft 403, thereby squeezing the bottom of the cable, and cooperating with the semicircular groove 305 on the top to achieve the effect of clamping and positioning the cable. This structure can position the protected cable and enhance the stability of the cable terminal.

[0027] Among them, a plurality of springs 405 for facilitating structural resetting are fixedly connected between the top of the piston block 404 and the inner wall of the three-head inner cavity 406. Through this arrangement, the clamping block 402 can be easily reset after it moves.

[0028] Furthermore, the upper pressing block 303 and the lower pressing block 304 are fixedly connected to the opposite ends with magnetic blocks 5 with opposite magnetism. Through this arrangement, when the lower pressing block 304 and the upper pressing block 303 are attached to each other, the attraction between the two can be enhanced and the stability of the connection between the two can be enhanced.

[0029] Furthermore, a threaded shaft 408 is provided through the top of the lower pressure block 304, and a small bearing 409 is embedded in the lower pressure block 304, and the inner ring of the small bearing 409 is sleeved and fixed on the threaded shaft 408, and the bottom end of the threaded shaft 408 extends into the limiting groove 306 and is threadedly connected to the slider 307. Through the above arrangement, when the small bearing 409 is rotated, the bottom end of the small bearing 409 will drive the threaded slider 307 to move up and down according to the rotation direction. When the slider 307 is lifted up and down, it will drive the lower pressure block 304 fixedly connected thereto to lift and lower synchronously. At this time, it is convenient to adjust the gap between the two semicircular grooves 305 according to the thickness of the cable, thereby satisfying the effect of inserting more cables of different thicknesses, and at the same time, it can also improve the cable fixing and clamping effect, and also improve the scope of application of the device.

[0030] In addition, the maximum rising distance of the slider 307 is adapted to the moving distance of the clamping block 402 in the groove on the lower pressing block 304. Through this setting, it can be ensured that during the movement of the slider 307, the clamping block 402 will not abut against the inner wall of the groove, affecting the overall movement, thereby improving the stability of the connection between the structures.

[0031] Working principle: When it is necessary to insert the cable terminal, it is only necessary to pull out the four sliding shafts 301, and then pass the cable terminal through the two semicircular grooves 305 on the upper pressing block 303 and the lower pressing block 304, and finally insert it into the wiring hole on the circuit breaker body 1, and then press the lower pressing block 304 downward to fix it, so as to achieve the fixed clamping of the tail of the cable terminal. At this time, the extended sliding shaft 301, the connecting block 302, the upper pressing block 303 and the lower pressing block 304 will extend the cable at the tail of the terminal to protect it, so as to avoid the problem of the cable skin being broken or fractured due to excessive bending of the cable near the terminal on the circuit breaker body 1. At the same time, the extension of the fixed cable tail can also improve the stability of the terminal in the circuit breaker body 1.

[0032] After the cable terminal is inserted into the circuit breaker body 1 through the two semicircular grooves 305, the pressing block 304 can be pressed downward, so that the pressing block 304 drives the piston shaft 407 to press downward in the three-head inner cavity 406, thereby increasing the air pressure in the three-head inner cavity 406 and pushing the spring 405 to move upward. When the spring 405 moves upward, the connecting shaft 403 drives the clamping block 402 to extend out of the semicircular groove 305, thereby squeezing the bottom of the cable, and cooperating with the semicircular groove 305 on the top to achieve the effect of clamping and positioning the cable. This structure can achieve the positioning of the protected cable and enhance the stability of the cable terminal.

[0033] Among them, when the threaded shaft 408 is rotated, the bottom end of the threaded shaft 408 will drive the threaded connected slider 307 to move up and down according to the rotation direction. Since the position of the slider 307 is fixed, the threaded shaft 408 moves along its own length direction when rotating, and will drive the lower pressure block 304 to rise and fall synchronously through the small bearing 409. At this time, it is convenient to adjust the gap between the two semicircular grooves 305 according to the thickness of the cable, thereby meeting the effect of inserting more cables of different thicknesses, and at the same time, it can also improve the cable fixing and clamping effect, and also improve the application range of the device.

[0034] The above-mentioned specific embodiments are only several optional embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A small circuit breaker power connection mechanism, comprising a circuit breaker body (1), wherein two connection terminals of the circuit breaker body (1) are provided with connection holes, characterized in that: Also includes: Abutment bolts (2) for fixing cable terminals are installed on the tops of the two terminal ends of the circuit breaker body (1); Both sides of the two wiring terminals of the circuit breaker body (1) are provided with an anti-bending mechanism (3) for preventing the cable wiring terminals from being excessively bent; The anti-bending mechanism (3) is provided with a clamping mechanism (4) for further improving the stability of the cable connection head.

2. The miniature circuit breaker power connection mechanism according to claim 1, characterized in that: The anti-bending mechanism (3) comprises four sliding shafts (301), the four sliding shafts (301) are respectively slidably connected to the four corners of the wiring terminal of the circuit breaker body (1), the four sliding shafts (301) are commonly fixedly connected to a connecting block (302), and the connecting block (302) is respectively provided with an upper pressing block (303) and a lower pressing block (304) on the side opposite to the sliding shaft (301), and the lower pressing block (304) is located above the upper pressing block (303). The upper pressing block (303) is fixedly connected to the connecting block (302); a limiting groove (306) is provided on a side of the lower pressing block (304) opposite to the connecting block (302); a slider (307) is slidably connected in the limiting groove (306); one end of the slider (307) is fixedly connected to the connecting block (302); and a semicircular groove (305) adapted to the wiring hole is provided on opposite ends of the upper pressing block (303) and the lower pressing block (304).

3. The miniature circuit breaker power connection mechanism according to claim 2, characterized in that: The clamping mechanism (4) comprises a receiving groove (401), wherein the receiving groove (401) is arranged in a semicircular groove (305) on the upper pressing block (303), a clamping block (402) is slidably connected in the receiving groove (401), a groove matching the clamping block (402) is arranged in the semicircular groove (305) on the lower pressing block (304), a connecting shaft (403) is fixedly connected to the bottom end of the clamping block (402), and the upper pressing block (303) is slidably connected to the clamping block (402) ) is provided with a three-head inner cavity (406), the bottom end of the connecting shaft (403) passes through the three-head inner cavity (406) and is fixedly connected to a piston block (404), the piston of the piston block (404) is connected to the three-head inner cavity (406), the bottom end of the lower pressure block (304) relative to the upper pressure block (303) is fixedly connected to two piston shafts (407), the bottom ends of the two piston shafts (407) are respectively piston-connected to the two ends of the three-head inner cavity (406).

4. The miniature circuit breaker power connection mechanism according to claim 3, characterized in that: A plurality of springs (405) for facilitating structural resetting are fixedly connected between the top of the piston block (404) and the inner wall of the three-head inner cavity (406).

5. The miniature circuit breaker power connection mechanism according to claim 2, characterized in that: The upper pressing block (303) and the lower pressing block (304) are both fixedly connected to opposite ends thereof with magnetic blocks (5) having opposite magnetic properties.

6. The power connection mechanism of a miniature circuit breaker according to claim 3, characterized in that: A threaded shaft (408) is provided through the top end of the lower pressing block (304), a small bearing (409) is embedded in the lower pressing block (304), and the inner ring of the small bearing (409) is sleeved and fixed on the threaded shaft (408), and the bottom end of the threaded shaft (408) extends into the limiting groove (306) and is threadedly connected to the slider (307).

7. The power connection mechanism of a miniature circuit breaker according to claim 3, characterized in that: The maximum rising distance of the sliding block (307) is adapted to the moving distance of the clamping block (402) in the groove on the lower pressing block (304).

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