Waterproof structure of switch terminal

Abstract

The utility model relates to the technical field of switch terminals, and discloses a switch terminal waterproof structure, which comprises a shell and a conductive block, an accommodating cavity is arranged in the middle of the interior of the shell, the bottom surface of the interior of the accommodating cavity is fixedly connected with the conductive block, and anti-intrusion mechanisms are arranged on two sides of the shell. The anti-invasion mechanism comprises three compression screw cylinders, a cover plate and two reset springs, two threaded holes and one threaded hole are formed in the outer wall of one side of the shell and the outer wall of the other side of the shell correspondingly, sealing rings are fixedly connected to the sides, away from the center of the shell, of the threaded holes correspondingly, and the sides, close to the center of the shell, of the compression screw cylinders are in threaded connection with the threaded holes correspondingly; the inner wall of the compression screw cylinder is attached to the sealing ring. According to the utility model, the sealing ring is pressed by the pressing screw cylinder in the anti-intrusion mechanism to be tightly attached to the insulating sheath of the wire, the clamping block and the clamping groove are connected in a clamping manner under the action of the reset spring, and the cover plate covers the fastening hole in the shell, so that the sealing capability and the safety are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of switch terminals, in particular to a waterproof structure of a switch terminal. Background Art

[0002] Switch terminals are a type of connection component specially designed for electrical equipment such as small circuit breakers, leakage circuit breakers, and air switches. They are mainly used to achieve the circuit connection function while ensuring the stability and reliability of the connection.

[0003] However, since most of the existing switch terminals on the market are connected to the wires through wiring holes, external moisture and dust can easily enter the switch terminals through the gaps between the wires and the openings, causing damage to the circuit and affecting the safety of the connection.

[0004] Therefore, those skilled in the art provide a switch terminal waterproof structure to solve the problems raised in the above background technology. Utility Model Content

[0005] The purpose of the present utility model is to solve the shortcomings of the prior art and provide a waterproof structure for switch terminals. The compression screw in the anti-intrusion mechanism compresses the sealing ring to fit tightly with the insulating outer sheath of the wire, and utilizes the reset spring to act on the card block to connect the card block with the card slot, so that the cover plate covers the fastening hole on the shell, thereby improving the sealing ability and safety.

[0006] To achieve the above-mentioned object, the present invention provides a waterproof structure for a switch terminal, comprising a housing and a conductive block, wherein a housing cavity is defined in the middle of the interior of the housing, the bottom surface of the housing cavity being fixedly connected to the conductive block, anti-intrusion mechanisms being provided on both sides of the housing, the anti-intrusion mechanisms comprising three compression screw barrels, a cover plate, and two return springs, two and one threaded holes being defined in the outer walls of one side and the other side of the housing, respectively, and a sealing ring being fixedly connected to each of the threaded holes on the side away from the center of the housing;

[0007] The side of the compression screw barrel close to the center of the shell is threadedly connected to the threaded hole, the inner wall of the compression screw barrel is in contact with the sealing ring, the other side of the inner wall of the front end and the rear end of the cover plate is provided with a card slot, the front end and the rear end of the other side of the upper end of the shell are provided with a slide groove, the side of the return spring away from the center of the shell is fixedly connected with a card block, the upper end of the card block passes through the slide groove and is connected to the card slot;

[0008] Through the above technical solution, the sealing ring is fixedly connected in the threaded hole, and the compression screw is tightened to make the compression sealing ring fit tightly against the insulating sheath of the wire, and the reset spring acts on the card block to make the card block and the card slot be connected, so that the cover plate covers the fastening hole on the shell, thereby improving the sealing ability and safety.

[0009] Furthermore, the lower ends of the front end and the middle of the rear end of the shell are fixedly connected to the mounting blocks, and the front end and the rear end of the upper end of the shell are hingedly connected to the cover plate;

[0010] Through the above technical solution, the device can be fixed to a desired location such as an electrical cabinet by using screws in conjunction with the mounting holes on the mounting block, and the cover plate can be used to block the opening above the shell, while also preventing foreign objects from touching the fastening screws.

[0011] Furthermore, three fastening holes are opened in the middle of the upper end of the shell, and the inner walls of the fastening holes are rotatably connected with fastening screws;

[0012] Through the above technical solution, the worker can use a screwdriver to move the arc-shaped pressing piece by rotating the connected fastening screw inside the fastening hole.

[0013] Furthermore, the lower ends of the fastening screws pass through the housing and are threadedly connected to arc-shaped pressing pieces, and the arc-shaped pressing pieces slide inside the accommodating cavity;

[0014] Through the above technical solution, the arc-shaped pressing plate is threadedly connected with the fastening screw, so that the arc-shaped pressing plate can firmly press the wire and fix it on the conductive block to prevent the wire from falling off.

[0015] Furthermore, the threaded holes are all connected to the accommodating cavity, and a through hole is formed on one side of the compression screw barrel away from the center of the shell;

[0016] Through the above technical solution, by allowing the threaded hole to pass through the accommodating cavity and cooperating with the through hole opened on the compression barrel, the wires can be smoothly inserted into the shell and contact with the conductive block, where a single one is connected to the main circuit, and two adjacent ones are connected to the branch circuits respectively.

[0017] Furthermore, the inner wall of the slide groove near the center of the shell is fixedly connected to the return spring, and the clamping blocks slide inside the slide groove;

[0018] Through the above technical solution, the reset spring inside the slide groove acts on the card block to prevent the card block from moving in the slide groove, so that the card block can maintain the card connection state with the card groove and prevent the cover from opening.

[0019] Furthermore, the side of the clamping block away from the center of the shell is fixedly connected to a pressing block, and the side of the pressing block away from the center of the shell passes through the slide groove to the outside of the shell;

[0020] With the above technical solution, by means of the pressing block fixedly connected to the card block, the staff can press the pressing block to push the card block to move in the slide slot, contact the card slot and engage the card slot, so that the cover can be opened.

[0021] The utility model has the following beneficial effects:

[0022] The utility model proposes a waterproof structure for switch terminals. A sealing ring fixedly connected in a threaded hole in an anti-intrusion mechanism is used. The compression screw is tightened to compress the sealing ring and tightly fit the insulating sheath of the wire. A reset spring is used to act on the clamping block to clamp the clamping block and connect it with the clamping slot, so that the cover plate covers the fastening hole on the shell, thereby preventing external moisture and dust from easily entering the interior of the switch terminal through the gap between the wire and the opening, thereby improving the sealing ability and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the main structure of a switch terminal waterproof structure proposed by the utility model;

[0024] Figure 2 This is an exploded view of a switch terminal waterproof structure proposed by the utility model;

[0025] Figure 3 This is an axial cross-sectional view of the housing, cover plate, compression screw barrel, and arc-shaped pressing piece of a waterproof structure for a switch terminal proposed in the utility model;

[0026] Figure 4 This is an axial cross-sectional view of the housing and cover of a switch terminal waterproof structure proposed in the present invention;

[0027] Figure 5 for Figure 3 Enlarged view of point A in the middle;

[0028] Figure 6 for Figure 4 Enlarged view of point B in the middle.

[0029] Description of reference numerals:

[0030] 1. Shell; 2. Mounting block; 3. Accommodating cavity; 4. Conductive block; 5. Fastening hole; 6. Fastening screw; 7. Arc-shaped pressing piece; 8. Anti-intrusion mechanism; 801. Threaded hole; 802. Sealing ring; 803. Compression screw; 804. Through hole; 805. Cover plate; 806. Slot; 807. Slide groove; 808. Return spring; 809. Block; 810. Pressing block. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the specific embodiments of the present invention to clearly and completely describe the technical solutions in the specific embodiments of the present invention. Obviously, the specific embodiments described are only part of the specific embodiments of the present invention, not all of the specific embodiments. Based on the specific embodiments of the present invention, all other specific embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Reference Figure 1-6 The present invention provides a specific embodiment: a waterproof structure for a switch terminal, comprising a housing 1 and a conductive block 4. A receiving chamber 3 is provided in the middle of the housing 1. The bottom surface of the receiving chamber 3 is fixedly connected to the conductive block 4. Anti-intrusion mechanisms 8 are provided on both sides of the housing 1. The anti-intrusion mechanisms 8 include three compression screws 803, a cover plate 805, and two return springs 808. Two and one threaded holes 801 are respectively provided on the outer walls of one side and the other side of the housing 1. A sealing ring 802 is fixedly connected to the side of the threaded hole 801 away from the center of the housing 1.

[0033] The compression screw 803 is threadedly connected to the threaded hole 801 on one side close to the center of the shell 1, and the inner wall of the compression screw 803 is fitted with the sealing ring 802. A card groove 806 is provided on the other side of the inner wall of the front and rear ends of the cover plate 805, and a slide groove 807 is provided on the front and rear ends of the other side of the upper end of the shell 1. The reset spring 808 is fixedly connected to a card block 809 on one side away from the center of the shell 1, and the upper end of the card block 809 passes through the slide groove 807 and is card-connected to the card groove 806.

[0034] By means of a sealing ring 802 fixedly connected in the threaded hole 801 in the anti-intrusion mechanism 8, the compression screw 803 is tightened to compress the sealing ring 802 to fit tightly against the insulating outer skin of the wire, and the reset spring 808 acts on the clamping block 809 to clamp the clamping block 809 and connect it with the clamping groove 806, so that the cover plate 805 covers the fastening hole 5 on the shell 1, thereby preventing external moisture and dust from easily entering the interior of the switch terminal through the gap between the wire and the opening, thereby improving the sealing ability and safety.

[0035] The lower ends of the front and rear middle parts of the shell 1 are fixedly connected to the mounting blocks 2, and the front and rear ends of the upper end of the shell 1 are hingedly connected to the cover 805. The device can be fixed to the required position such as the electrical cabinet by screws in conjunction with the mounting holes opened on the mounting blocks 2. The cover 805 can be used to block the opening above the shell 1 and prevent foreign objects from touching the fastening screws 6. Three fastening holes 5 are opened in the middle of the upper end of the shell 1. The inner walls of the fastening holes 5 are rotatably connected to the fastening screws 6. By rotating the fastening screws inside the fastening holes 5, the fastening screws 6 are tightened. The fastening screws 6 connected allow the staff to use a screwdriver to drive the arc-shaped pressing piece 7 to move. The lower ends of the fastening screws 6 all pass through the shell 1 and are threadedly connected to the arc-shaped pressing piece 7. The arc-shaped pressing piece 7 slides inside the accommodating cavity 3. The fastening screws 6 are threadedly connected to the arc-shaped pressing piece 7, so that the arc-shaped pressing piece 7 can firmly press the wire and fix it on the conductive block 4 to prevent the wire from falling off. The threaded holes 801 are all connected to the accommodating cavity 3, and a through hole 804 is opened on the side of the compression screw barrel 803 away from the center of the shell 1. By letting the threaded holes 80 1 is connected to the accommodating cavity 3, and cooperates with the through hole 804 opened on the compression screw 803, so that the wire can be smoothly inserted into the housing 1 and contacted with the conductive block 4. A single one of them is connected to the main circuit, and the two adjacent ones are connected to the branch circuits respectively. The inner wall of the chute 807 near the center of the housing 1 is fixedly connected to the reset spring 808. The block 809 slides inside the chute 807. The reset spring 808 inside the chute 807 acts on the block 809 to prevent the block 809 from being locked in the chute 807. Movement allows the card block 809 to maintain a card-engaging state with the card slot 806, preventing the cover 805 from opening. The side of the card block 809 away from the center of the shell 1 is fixedly connected to a pressing block 810, and the side of the pressing block 810 away from the center of the shell 1 passes through the slide groove 807 to the outside of the shell 1. Through the pressing block 810 fixedly connected to the card block 809, the staff can press the pressing block 810 to push the card block 809 to move in the slide groove 807, thereby releasing the card-engaging state with the card slot 806 and allowing the cover 805 to open.

[0036] Working principle: When using the waterproof structure of the switch terminal, the staff first uses screws to cooperate with the mounting holes on the mounting block 2 to install the equipment in the required location such as the electrical cabinet. Then the staff presses the pressing block 810 to drive the clamping block 809 to release the clamping state of the clamping slot 806 and open the cover 805. Secondly, the staff inserts the wire into the shell 1 from the through hole 804, and then uses a screwdriver to tighten the fastening screw 6 to allow the arc-shaped pressing piece 7 to press the wire onto the conductive block 4. Then, the cover 805 is closed and the reset spring 808 is used to act on the clamping block 809 to keep it clamped to the clamping slot 806 and keep the cover 805 closed. Finally, the staff tightens the compression screw 803 to compress the sealing ring 802 to fit tightly with the insulating sheath of the wire, and cooperates with the cover 805 to cover the fastening hole 5 on the shell 1, thereby improving the switch terminal's ability to prevent moisture and dust from intrusion.

[0037] Finally, it should be noted that the above is only a preferred specific implementation method of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned specific implementation methods, those skilled in the art can still modify the technical solutions described in the aforementioned specific implementation methods or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A switch terminal waterproof structure, comprising a housing (1) and a conductive block (4), characterized in that: An accommodating cavity (3) is provided in the middle of the interior of the shell (1), and the bottom surface of the interior of the accommodating cavity (3) is fixedly connected to the conductive block (4). Anti-intrusion mechanisms (8) are provided on both sides of the shell (1), and the anti-intrusion mechanisms (8) include three compression screw barrels (803), a cover plate (805) and two reset springs (808). Two and one threaded holes (801) are respectively provided on the outer walls of one side and the other side of the shell (1), and a sealing ring (802) is fixedly connected to the side of the threaded hole (801) away from the center of the shell (1); The compression screw barrel (803) is threadedly connected to the threaded hole (801) on one side close to the center of the shell (1), and the inner wall of the compression screw barrel (803) is fitted with the sealing ring (802). The other side of the inner wall of the front end and the rear end of the cover plate (805) is provided with a card slot (806), and the front end and the rear end of the other side of the upper end of the shell (1) are provided with a slide groove (807). The reset spring (808) is fixedly connected to a card block (809) on one side away from the center of the shell (1), and the upper end of the card block (809) passes through the slide groove (807) and is card-connected to the card slot (806).

2. The switch terminal waterproof structure according to claim 1, characterized in that: The lower ends of the front end and the middle of the rear end of the shell (1) are fixedly connected to the mounting blocks (2), and the front end and the rear end of the upper end of the shell (1) are hingedly connected to the cover plate (805).

3. The switch terminal waterproof structure according to claim 1, characterized in that: Three fastening holes (5) are provided in the middle of the upper end of the shell (1), and the inner walls of the fastening holes (5) are rotatably connected with fastening screws (6).

4. The switch terminal waterproof structure according to claim 3, characterized in that: The lower ends of the fastening screws (6) pass through the housing (1) and are threadedly connected to arc-shaped pressing pieces (7), and the arc-shaped pressing pieces (7) slide inside the accommodating cavity (3).

5. The switch terminal waterproof structure according to claim 1, characterized in that: The threaded holes (801) are all connected to the accommodating cavity (3), and a through hole (804) is formed on one side of the compression screw barrel (803) away from the center of the shell (1).

6. The switch terminal waterproof structure according to claim 1, characterized in that: The inner wall of the sliding groove (807) on one side close to the center of the shell (1) is fixedly connected to the return spring (808), and the clamping block (809) slides inside the sliding groove (807).

7. The switch terminal waterproof structure according to claim 1, characterized in that: The side of the clamping block (809) away from the center of the shell (1) is fixedly connected to the pressing block (810), and the side of the pressing block (810) away from the center of the shell (1) passes through the sliding groove (807) to the outside of the shell (1).

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