Ground knife sealing mechanism of low-voltage cabinet

Abstract

The utility model relates to the technical field of low-voltage cabinets, and discloses a low-voltage cabinet ground knife sealing mechanism which comprises a mounting seat. The binding post is arranged on the mounting base, a wiring hole is formed in the binding post, and the cable is matched with the wiring hole in an inserted mode; and the fixing assembly comprises a plurality of clamping parts which are arranged in the wiring hole and are used for clamping the cable, and a displacement part which is used for driving the clamping parts to move in the wiring hole. The connection structure has the effect of improving the connection stability of the cable and the binding post.

Description

Technical Field

[0001] The present application relates to the technical field of low-voltage cabinets, and in particular to a ground knife sealing mechanism for a low-voltage cabinet. Background Art

[0002] Low voltage cabinet, also known as low voltage distribution cabinet. Low voltage cabinet is a product used to convert and configure electric energy. Ground knife, also known as grounding knife switch. Ground knife is a safety interlocking mechanism used to replace the grounding wire and is a common structure installed inside the low voltage cabinet.

[0003] The sealing mechanism of the existing ground knife generally includes a mounting seat, a switch and a terminal. The terminal is mounted on the mounting seat, and two terminals are generally provided, each terminal is electrically connected to the cable, and the switch is generally installed between the two terminals, and the switch is used to control the connection and disconnection of the two terminals.

[0004] At present, when connecting a cable to a terminal, the cable is generally pressed directly onto the terminal by bolts to connect the cable and the terminal circuit. However, due to the small contact surface between the bolt and the cable, when the cable is pressed onto the terminal by bolts, the connection is easily unstable. When the cable is pulled, the cable is easily out of the pressing range of the bolt, making the sealing mechanism of the ground knife ineffective. Utility Model Content

[0005] In order to improve the stability of the connection between the cable and the terminal, the present application provides a low-voltage cabinet ground knife sealing mechanism.

[0006] The present application provides a low-voltage cabinet ground knife sealing mechanism that adopts the following technical solution:

[0007] A low-voltage cabinet ground knife sealing mechanism, comprising

[0008] Mounting seat;

[0009] A terminal, the terminal being arranged on the mounting seat, the terminal being provided with a wiring hole, the cable being plugged into and matched with the wiring hole;

[0010] The fixing assembly comprises a plurality of clamping parts arranged inside the wiring hole for clamping the cable and a displacement part for driving the clamping parts to move inside the wiring hole.

[0011] Optionally, the inner diameter of the wiring hole gradually decreases along the direction from the wire inlet to the wire outlet of the wiring hole, and each of the clamping parts includes a clamping strip that slidably cooperates with the inner wall of the wiring hole.

[0012] Optionally, a groove is provided on a side of the clamping strip close to the axis of the wiring hole, and a center of the groove is located on a side of the clamping strip close to the axis of the wiring hole.

[0013] Optionally, a plurality of sliding grooves are provided on the inner wall of the wiring hole, and the plurality of sliding grooves are circumferentially distributed along the axial direction of the wiring hole. A sliding bar is provided on the side of each clamping bar away from the axial direction of the wiring hole, and the sliding bar and the sliding groove are slidably matched.

[0014] Optionally, a fixing cylinder is provided at a position of the terminal post near the wire inlet of the wiring hole, the wiring hole and the fixing cylinder are coaxially arranged, and the displacement portion includes a fixing ring threadedly connected to the inner wall of the fixing cylinder, and the side wall of the fixing ring abuts against the end of the clamping strip.

[0015] Optionally, the displacement portion further includes a toggle bar arranged on the fixing ring.

[0016] Optionally, a pushing block is provided at one end of the clamping bar close to the fixing ring, and the pushing block gradually becomes smaller in a direction from close to the clamping bar to away from the clamping bar.

[0017] Optionally, the clamping portion further comprises an adjusting rod disposed at one end of the clamping strip close to the fixing ring, and one end of the adjusting rod away from the clamping strip abuts against a side wall of the fixing ring.

[0018] In summary, the present application includes at least one of the following beneficial technical effects:

[0019] 1. When connecting the cable to the terminal, place the cable between several clamping bars. When the clamping bar moves along the length direction of the sliding groove, the clamping bar moves toward the axis direction of the wiring hole. The cable is clamped synchronously by several clamping bars to improve the clamping stability of the cable.

[0020] 2. When the fixed ring and the pushing block collide, the pushing block and the fixed ring have a smaller contact area, which makes it easier to grind the pushing block, thereby reducing the friction resistance between the fixed ring and the pushing block. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0022] Figure 2 It is a schematic diagram showing the positional relationship between the terminal and the fixing component in the embodiment of the present application.

[0023] Figure 3 It is a schematic diagram of the terminal structure in the embodiment of the present application.

[0024] Figure 4 It is a schematic diagram showing the positional relationship between the terminal and the clamping portion in the embodiment of the present application.

[0025] Description of reference numerals:

[0026] 1. Mounting seat; 2. Terminal post; 21. Wiring hole; 22. Sliding groove; 23. Fixed cylinder; 3. Fixed assembly; 31. Clamping part; 311. Clamping strip; 312. Adjusting rod; 313. Pushing block; 32. Displacement part; 321. Fixed ring; 322. Toggle strip; 4. Switch. DETAILED DESCRIPTION

[0027] The following combination Figure 1-Figure 4 This application is described in further detail.

[0028] The embodiment of the present application discloses a low-voltage cabinet ground knife sealing mechanism.

[0029] A low-voltage cabinet ground knife sealing mechanism comprises a mounting seat 1, a terminal 2, a fixing assembly 3 and a switch 4. Two terminals 2 are provided, and both terminals 2 are installed on the mounting seat 1. Two fixing assemblies 3 are provided, and the two fixing assemblies 3 correspond to the two terminals 2 one by one. The fixing assemblies 3 are installed on the corresponding terminals 2, and the fixing assemblies 3 are used to clamp the cable. The switch 4 is located between the two terminals 2, and the switch 4 is used to control the connection and disconnection of the circuit between the two terminals 2.

[0030] The terminal 2 is arranged in a columnar shape. In the embodiment of the present application, the terminal 2 is a rectangular column. The side wall of the terminal 2 is provided with a wiring hole 21, and the cable is plugged into the wiring hole 21. The inner diameter of the wiring hole 21 gradually decreases from the wire inlet to the wire outlet of the wiring hole 21. In the embodiment of the present application, the wiring hole 21 is arranged in a conical shape.

[0031] A plurality of sliding grooves 22 are provided on the inner wall of the wiring hole 21, and the plurality of sliding grooves 22 are evenly distributed circumferentially along the axial direction of the wiring hole 21. In the embodiment of the present application, four sliding grooves 22 are provided, and the length directions of the four sliding grooves 22 intersect at the same point on the axial direction of the wiring hole 21, and each sliding groove 22 is a dovetail groove.

[0032] A fixing cylinder 23 is provided on the side wall of the terminal 2 near the line inlet of the wiring hole 21, the axis of the fixing cylinder 23 coincides with the axis of the wiring hole 21, one end of the fixing cylinder 23 near the side wall of the terminal 2 is fixedly connected to the side wall of the terminal 2, and the inner wall of the fixing cylinder 23 is provided with a thread.

[0033] The fixing assembly 3 includes a clamping portion 31 and a displacement portion 32 .

[0034] There are several clamping parts 31, and in the embodiment of the present application, there are four clamping parts 31. The four clamping parts 31 correspond to the four sliding grooves 22 one by one. Each clamping part 31 includes a clamping bar 311 and an adjusting rod 312.

[0035] A sliding bar is provided on one side of the clamping bar 311 away from the axis of the wiring hole 21. The clamping bar 311 and the sliding bar are integrally formed. The sliding bar is a dovetail bar. The sliding bar and the corresponding sliding groove 22 slide together. At the same time, the inner wall of the sliding groove 22 guides and limits the clamping bar 311 through the sliding bar.

[0036] A groove is provided on one side of the clamping strip 311 close to the axis of the wiring hole 21 , and the center of the groove is located on the side of the clamping strip 311 close to the axis of the wiring hole 21 . In the embodiment of the present application, the groove is an arc-shaped groove.

[0037] When installing the cable, the cable is placed between the four clamping bars 311, and the cable is clamped by the four clamping bars 311. During the clamping process, the groove wall of the groove on the clamping bar 311 positions the cable, thereby improving the accuracy of the placement of the cable. At the same time, when clamping the cable, the groove wall of the groove increases the contact area with the cable, improving the clamping stability of the cable.

[0038] When the sliding bar moves in the sliding groove 22 from the wire inlet to the wire outlet of the wiring hole 21, the sliding groove 22 guides the sliding bar so that the clamping bar 311 moves toward the axial direction close to the wiring hole 21, thereby facilitating the clamping of the cables placed between the clamping bars 311.

[0039] The adjusting rod 312 is arranged at one end of the clamping bar 311 close to the fixed tube 23. In the embodiment of the present application, the adjusting rod 312 is a round rod, and the axial direction of the adjusting rod 312 is consistent with the axial direction of the wiring hole 21. The adjusting rod 312 and the end of the clamping bar 311 are detachably connected. In the embodiment of the present application, the adjusting rod 312 and the end of the clamping bar 311 are threadedly connected, and the end of the adjusting rod 312 away from the clamping bar 311 is integrally formed with a pushing block 313, and the pushing block 313 gradually decreases in the direction from close to the adjusting rod 312 to away from the adjusting rod 312. In the embodiment of the present application, the pushing block 313 is hemispherical.

[0040] The displacement portion 32 includes a fixing ring 321 and a shifting bar 322 .

[0041] The fixing ring 321 is located inside the fixing cylinder 23, the fixing ring 321 and the fixing cylinder 23 are coaxially arranged, and the fixing ring 321 and the inner wall of the fixing cylinder 23 are threadedly connected, and the pushing block 313 and the side wall of the fixing ring 321 are in contact. When the fixing ring 321 rotates inside the fixing cylinder 23, the fixing ring 321 moves inside the fixing cylinder 23, and at this time, the fixing ring 321 pushes the sliding bar to move inside the sliding groove 22 through the adjusting rod 312, and moves the clamping bar 311 toward the axial direction close to the wiring hole 21.

[0042] The smaller contact surface between the push block 313 and the fixing ring 321 reduces the grinding area of ​​the push block 313 and improves the convenience of grinding the push block 313. At the same time, since in the embodiment of the present application, the push block 313 is hemispherical, the push block 313 and the fixing ring 321 are in point contact, thereby reducing the friction resistance between the push block 313 and the fixing ring 321.

[0043] Since the adjustment rod 312 and the clamping bar 311 are detachably connected, it is convenient to pre-replace the adjustment rod 312 of different sizes according to the distance that the clamping bar 311 needs to move toward the axial direction of the wiring hole 21, thereby facilitating the clamping of cables of different sizes.

[0044] The toggle bar 322 is fixedly installed on the side of the fixing ring 321 away from the clamping bar 311. A plurality of toggle bars 322 are provided, and the plurality of toggle bars 322 are evenly distributed circumferentially along the axis direction of the fixing ring 321. The staff rotates the fixing ring 321 by the toggle bars 322, which improves the convenience of rotating the fixing ring 321.

[0045] The implementation principle of the low-voltage cabinet ground knife sealing mechanism of the embodiment of the present application is as follows: when connecting the cable to the terminal 2, the cable is passed through the fixing ring 321, and the cable is located between the plurality of clamping strips 311. Then, the staff drives the fixing ring 321 to rotate by toggling the strip 322, and the fixing ring 321 pushes the clamping strip 311 to move inside the wiring hole 21 through the pushing block 313 and the adjusting rod 312, so that the clamping strip 311 clamps the cable. Since the fixing ring 321 and the fixing cylinder 23 are threadedly connected, the fixing ring 321 and the fixing cylinder 23 form a self-locking, and then, after the cable connection is completed, the possibility of the fixing ring 321 moving again inside the fixing cylinder 23 is reduced, and the convenience of clamping the cable is improved while the stability of the cable clamping is improved.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A low voltage cabinet ground knife sealing mechanism, characterized in that: include Mounting seat (1); A terminal (2), the terminal (2) being arranged on the mounting seat (1), the terminal (2) being provided with a terminal hole (21), the cable being plugged into and matched with the terminal hole (21); A fixing assembly (3), comprising a plurality of clamping parts (31) arranged inside the wiring hole (21) for clamping the cable and a displacement part (32) for driving the clamping parts (31) to move inside the wiring hole (21).

2. A low voltage cabinet ground knife sealing mechanism according to claim 1, characterized in that: The inner diameter of the wiring hole (21) gradually decreases along the direction from the wire inlet of the wiring hole (21) to the wire outlet of the wiring hole (21), and each of the clamping parts (31) comprises a clamping strip (311) that slidably cooperates with the inner wall of the wiring hole (21).

3. A low voltage cabinet ground knife sealing mechanism according to claim 2, characterized in that: A groove is provided on one side of the clamping strip (311) close to the axis of the wiring hole (21), and the center of the groove is located on one side of the clamping strip (311) close to the axis of the wiring hole (21).

4. A low voltage cabinet ground knife sealing mechanism according to claim 2, characterized in that: A plurality of sliding grooves (22) are provided on the inner wall of the wiring hole (21), and the plurality of sliding grooves (22) are distributed circumferentially along the axial direction of the wiring hole (21). A sliding bar is provided on the side of each clamping bar (311) away from the axial direction of the wiring hole (21), and the sliding bar and the sliding groove (22) are slidably matched.

5. A low voltage cabinet ground knife sealing mechanism according to claim 2, characterized in that: The terminal (2) is provided with a fixing cylinder (23) at a position close to the wire inlet of the wiring hole (21); the wiring hole (21) and the fixing cylinder (23) are coaxially arranged; the displacement portion (32) comprises a fixing ring (321) threadedly connected to the inner wall of the fixing cylinder (23); the side wall of the fixing ring (321) abuts against the end of the clamping strip (311).

6. A low voltage cabinet ground knife sealing mechanism according to claim 5, characterized in that: The displacement portion (32) further comprises a toggle bar (322) arranged on the fixing ring (321).

7. A low voltage cabinet ground knife sealing mechanism according to claim 5, characterized in that: A pushing block (313) is provided at one end of the clamping bar (311) close to the fixing ring (321), and the pushing block (313) gradually becomes smaller in a direction from approaching the clamping bar (311) to moving away from the clamping bar (311).

8. The low-voltage cabinet ground knife sealing mechanism according to claim 5, characterized in that: The clamping portion (31) further comprises an adjusting rod (312) arranged at one end of the clamping strip (311) close to the fixing ring (321), and one end of the adjusting rod (312) away from the clamping strip (311) abuts against a side wall of the fixing ring (321).

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