Dust cover for tool unlocking

Abstract

The utility model discloses a dust cover capable of being unlocked by a tool, which comprises a dust cover main body, a protruding connecting boss is arranged on the dust cover main body, a containing groove of a wiring terminal is arranged in the center of the connecting boss, a connecting groove is arranged on the periphery of the connecting boss, a fixing boss is arranged on the outer wall of the connecting groove, and the fixing boss is hollow to form a fixing hole. The fixing holes are communicated with the connecting grooves, the screws are embedded into the fixing holes, and screw rods of the screws can stretch into the connecting grooves in a protruding mode. When the dustproof cover is fixed on the wiring terminal, the screw is screwed down, so that the dustproof cover is firmly fixed on the wiring terminal, the dustproof cover does not loosen or fall off under the action of vibration, impact or external force, and the dustproof effect of the dustproof cover unlocked by a tool can be improved; and when the wiring terminal is used, a tool needs to be used for unscrewing the screw to disassemble the dust cover, and the targeted design ensures that only a worker holding the tool can disassemble and assemble the dust cover on the wiring terminal, so that the misoperation possibility of non-professionals is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of dust covers, in particular to a dust cover for tool unlocking. Background Art

[0002] In electrical equipment and systems, as a key interface for current transmission and signal transfer, the stability and reliability of terminal blocks are crucial for the normal operation of the entire system. However, in actual applications, terminal blocks are often exposed to various complex environments, such as dusty, humid, corrosive gas, etc., and these environmental factors will seriously affect the performance and lifespan of terminal blocks.

[0003] To solve the above problems, engineers have designed dust covers to cover terminal blocks to reduce or prevent pollutants from directly contacting the terminal surface. However, traditional dust cover designs often have the problem of insecure connection, and are prone to loosen or even fall off under vibration, impact or external force, thus losing the dust-proof effect. In addition, although some dust covers are relatively firmly connected, the disassembly process is complex and requires special tools or skills, which brings inconvenience to the daily maintenance and repair of equipment. Summary of the Utility Model

[0004] In order to overcome the deficiencies of the existing dust covers with insecure connection and complex disassembly, the utility model provides a dust cover for tool unlocking.

[0005] The technical solution of the utility model is described as follows:

[0006] A dust cover for tool unlocking, comprising a dust cover main body and a screw. The dust cover main body is provided with a protruding connection boss. A receiving groove for a terminal block is provided at the center of the connection boss. A connection groove is provided on the periphery of the connection boss. A fixing boss is provided on the outer wall of the connection groove. The fixing boss is hollow to form a fixing hole, and the fixing hole communicates with the connection groove. The screw is embedded in the fixing hole and the screw rod of the screw can protrude into the connection groove.

[0007] Further, in one embodiment, a sealing ring is further provided on the connection boss, and the sealing ring is sleeved at a position close to the top of the connection boss.

[0008] Further, in one embodiment, a fixing groove is provided at a position close to the top of the connection boss, and the inner ring of the sealing ring is embedded in the fixing groove.

[0009] Further, in one embodiment, at the opening position of the fixing hole, the inner wall of the fixing boss converges towards the center. The minimum inner diameter at the opening position of the fixing hole is smaller than the outer diameter of the head of the screw, and the maximum inner diameter of the fixing hole is larger than the outer diameter of the head of the screw so that the screw is placed in the fixing hole.

[0010] Further, in one embodiment, the connection groove communicates with the fixing hole through a threaded hole, and the screw mates with the threaded hole.

[0011] Further, in one embodiment, on the outer sidewall of the connection groove in the height direction of the connection boss, there is also a groove provided.

[0012] Further, in one embodiment, the sealing ring is a silicone rubber ring.

[0013] Further, in one embodiment, the outer walls of the connection boss, the fixing boss and the connection groove are of an integral structure.

[0014] For the utility model according to the above solution, its beneficial effect lies in that when the dust cover of the tool unlocking is fixed to the wiring terminal, the screw is tightened, and the top end of the screw rod of the screw presses against the housing of the wiring terminal inserted into the connection groove, so that the dust cover of the tool unlocking is firmly fixed and connected to the wiring terminal. Moreover, due to the fixing effect of the screw, if it is necessary to remove the dust cover of the tool unlocking, a tool needs to be used to loosen the screw. This application makes the connection between the dust cover of the tool unlocking and the wiring terminal more firm when connected, and the dust cover will not loosen or fall off under vibration, impact or external force, which is beneficial to improving the dust-proof effect of the dust cover of the tool unlocking; when disassembling, a tool needs to be used to loosen the screw to remove the dust cover, and the targeted design ensures that only the staff holding the tool can disassemble and assemble the dust cover of the wiring terminal, reducing the possibility of misoperation by non-professionals. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present utility model, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 is a structural schematic diagram of the present utility model;

[0017] Figure 2 is Figure 1 an exploded view of

[0018] Figure 3 is a sectional view of the present utility model;

[0019] Figure 4 is Figure 3 an enlarged view of part A in

[0020] In the figure, 100 is a connecting boss; 110 is a receiving groove; 120 is a fixing groove; 200 is a fixing boss; 210 is a fixing hole; 300 is a screw; 400 is a sealing ring; 500 is a connecting groove; 600 is a concave groove. Detailed implementation

[0021] The following further describes the present utility model in conjunction with the accompanying drawings and embodiments. It should be noted that when an element is expressed as "fixed to" another element, it can be directly on the other element, or there can be one or more intermediate elements therebetween. When an element is expressed as "connected to" another element, it can be directly connected to the other element, or there can be one or more intermediate elements therebetween. The term "comprising" and any of its variations mean non-exclusive inclusion, and there may be or additional one or more other features, integers, steps, operations, units, components, and / or their combinations.

[0022] In addition, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. All technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the specification of the present utility model are only for the purpose of describing specific embodiments and are not used to limit the present utility model. In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0023] As Figures 1 - 3 shown, the present application is a dust cover for tool unlocking. The dust cover for tool unlocking includes a dust cover body and a screw 300. The dust cover body is provided with a protruding connecting boss 100. The center of the connecting boss 100 is provided with a receiving groove 110 for a terminal. The periphery of the connecting boss 100 is provided with a connecting groove 500. The outer wall of the connecting groove 500 is provided with a fixing boss 200. The fixing boss 200 is hollow to form a fixing hole 210. The fixing hole 210 communicates with the connecting groove 500. The screw 300 is embedded in the fixing hole 210 and the screw rod of the screw 300 can protrude into the connecting groove 500. When the dust cover for tool unlocking of the present application is fixed to the terminal, the screw 300 is tightened. The top end of the screw rod of the screw 300 presses against the housing of the terminal inserted into the connecting groove 500, so that the dust cover for tool unlocking is firmly fixed and connected to the terminal. Due to the fixing action of the screw 300, if the dust cover for tool unlocking is to be removed, a tool is needed to loosen the screw 300.

[0024] This application makes the connection between the dust cover for tool unlocking and the terminal block more firm when they are connected. The dust cover will not become loose or fall off under vibration, impact or external force, which is beneficial to improving the dust-proof effect of the dust cover for tool unlocking. When disassembling, only need to use a tool to loosen the screw 300 to remove the dust cover, quickly and conveniently disassemble the dust cover without affecting the normal use of the terminal block. At the same time, the targeted design that requires the use of tools for disassembly ensures that only the staff holding the tool can disassemble and assemble the dust cover of the terminal block, reducing the possibility of misoperation by non-professional personnel.

[0025] In this embodiment, a sealing ring 400 is further provided on the connecting boss 100. A fixing groove 120 is provided near the top of the connecting boss 100. The inner ring of the sealing ring 400 is embedded in the fixing groove 120, so that the sealing ring 400 is sleeved on the connecting boss 100 near the top position. The sealing ring 400 is a silicone rubber ring. The sealing ring 400 has flexibility. After the dust cover is inserted into the terminal block, the sealing ring 400 deforms to fill the gap between the terminal block and the outer wall of the connecting boss 100, thereby closing the accommodating groove 110, so that dust, water vapor, etc. in the external environment cannot enter the accommodating groove 110, improving the dust-proof and waterproof performance of the dust cover for tool unlocking. The fixing groove 120 fixes the fixing position of the sealing ring 400. When disassembling and assembling the dust cover, the sealing ring 400 always remains at the position where the fixing groove 120 is located. The sealing ring 400 will not slide in position due to the external force during disassembly and assembly, ensuring the normal use of the dust-proof and waterproof performance of the dust cover and facilitating the accurate assembly of the sealing ring 400 on the connecting boss 100.

[0026] Such as Figure 3 And Figure 4As shown, in one embodiment, at the opening position of the fixing hole 210, the inner wall of the fixing boss 200 converges toward the center, the minimum inner diameter at the opening position of the fixing hole 210 is smaller than the outer diameter of the head of the screw 300, and the maximum inner diameter of the fixing hole 210 is larger than the outer diameter of the head of the screw 300 so that the screw 300 is placed in the fixing hole 210. That is, at the fixing hole 210 at the center position of the fixing boss 200, the inner diameter at the top opening position first decreases to the minimum inner diameter and then increases to the maximum inner diameter, forming a narrow passage like the waist of a gourd, and the passable diameter length at the narrow passage position is slightly smaller than the diameter length of the head of the screw 300. Since the inner diameter of the narrow passage is slightly smaller than the diameter of the head of the screw 300, a beer press is required to press the head of the screw 300 into the fixing hole 210 during assembly of the present application. The head of the screw 300 is pressed by the beer machine into the part between the throat of the fixing hole 210 and the connecting groove 500. Since the screw 300 is pressed into this position by the high pressure of the beer machine, the head of the screw 300 cannot easily pass through the throat, so the screw 300 can only move below the throat. When the screw 300 is in a loose state, the screw 300 will not fall off from the fixing hole 210. This structure makes it impossible to separate the screw 300 from the dust cover body after the screw 300 is assembled into the dust cover body, solving the problem that the dust cover unlocked by the tool cannot be used due to the loss of the screw 300.

[0027] like Figure 3 As shown, in this embodiment, the connection groove 500 is connected to the fixing hole 210 through a screw hole, and the screw 300 is matched with the screw hole. Figure 3 As shown, the fixing hole 210 faces the connecting groove 500, and the inner diameter of the fixing hole 210 remains unchanged at the maximum inner diameter within a certain distance. As the distance approaches the outer wall of the connecting groove 500, the inner diameter of the fixing hole 210 gradually decreases until it reaches the outer wall of the connecting groove 500 and is reduced to a screw hole size that matches the screw rod of the screw 300. Similarly, the screw 300 is also a matching countersunk screw 300 with a gradually decreasing head diameter, so that the connection between the dust cover and the terminal block is more secure and not easily loosened due to shaking or vibration.

[0028] like Figure 2As shown, in one embodiment, in the height direction of the connecting boss 100, a groove 600 is further provided on the outer side wall of the connecting groove 500. There are multiple grooves 600, which are asymmetrically distributed on the outer side wall of the connecting groove 500. In order to facilitate the fastening of the connecting housing of the terminal to remove the dust cover, some protruding structures are generally provided on the housing at the top of the dust cover unlocked by the connecting tool of the terminal. When the dust cover is disassembled and assembled, the protruding structure on the housing of the terminal provides a fulcrum, and the groove 600 provides a space for the protruding structure to be placed. When the dust cover unlocked by the tool needs to be disassembled or installed, the screw 300 is in a loosened state, and a person presses on the protruding structure to insert the terminal into the connecting groove 500 or pull it out from the connecting groove 500, shortening the distance between the fulcrum and the closed top of the connecting groove 500, reducing the torque to save effort, thereby facilitating the plugging of the terminal in the connecting groove 500 and improving the speed of disassembling and assembling the dust cover.

[0029] In one embodiment, the outer wall of the connecting boss 100, the fixing boss 200 and the connecting groove 500 is an integrated structure. The integrated structure enables the dust cover body to be formed in one step, the dust cover body is durable and not easy to split, and is conducive to reducing the product production cost.

[0030] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

[0031] The above is an exemplary description of the utility model patent in conjunction with the accompanying drawings. It is obvious that the implementation of the utility model patent is not limited to the above-mentioned method. As long as various improvements are made by adopting the method concept and technical solution of the utility model patent, or the concept and technical solution of the utility model patent are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A tool-unlocked dust cover, characterized in that: It includes a dust cover body and a screw, the dust cover body is provided with a protruding connecting boss, the center of the connecting boss is provided with a accommodating groove for a wiring terminal, the periphery of the connecting boss is provided with a connecting groove, the outer wall of the connecting groove is provided with a fixing boss, the fixing boss is hollow to form a fixing hole, the fixing hole is connected to the connecting groove, the screw is embedded in the fixing hole and the screw rod of the screw can protrude into the connecting groove.

2. The tool-unlocked dust cover according to claim 1, characterized in that: The connecting boss is also provided with a sealing ring, and the sealing ring is sleeved on the connecting boss near the top.

3. The tool-unlocked dust cover according to claim 2, characterized in that: The connecting boss is provided with a fixing groove near the top end, and the inner ring of the sealing ring is embedded in the fixing groove.

4. The tool-unlocked dust cover according to claim 1, characterized in that: At the opening position of the fixing hole, the inner wall of the fixing boss converges toward the center, the minimum inner diameter of the opening position of the fixing hole is smaller than the outer diameter of the head of the screw, and the maximum inner diameter of the fixing hole is larger than the outer diameter of the head of the screw so that the screw can be placed in the fixing hole.

5. The tool-unlocked dust cover according to claim 4, characterized in that: The connecting groove is connected to the fixing hole through a screw hole, and the screw is matched with the screw hole.

6. The tool-unlocked dust cover according to claim 2, characterized in that: In the height direction of the connecting boss, a groove is further provided on the outer side wall of the connecting groove.

7. The tool-unlocked dust cover according to claim 2, characterized in that: The sealing ring is a silicone rubber ring.

8. The tool-unlocked dust cover according to claim 1, characterized in that: The connecting boss, the fixing boss and the outer wall of the connecting groove are an integrated structure.

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