Fastener and power equipment box comprising same

Abstract

A fastener and a power equipment box comprising the fastener relate to the technical field of power equipment, the fastener comprises a fastener main body, a rubber ring fixing structure, a fastening nut and a rubber ring, the outer side of the fastener main body is provided with external threads, the rubber ring fixing structure is fixedly arranged at one end of the fastener main body, and the fastening nut is fixedly arranged at the other end of the fastener main body. The fastening nut is connected to the other end of the fastener body through threads, the rubber ring is arranged on the inner side of the rubber ring fixing structure, and the fastener body is sleeved with the rubber ring. The power equipment box body comprises the fastener. The fastener body penetrates through the box wall, and the rubber ring is tightly attached to the outer side of the box wall. According to the utility model, the waterproof problem of the incoming cable of the box body can be effectively solved, and the installation difficulty and cost are reduced. Water is prevented from entering the box body along the cable, the system safety is improved, water is prevented from flowing in from a gap between the fastener body and the box body, the system stability is improved, and wide applicability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of power equipment, in particular to a fastener and a power equipment box body containing the fastener. Background Technique

[0002] In the application of power equipment, the sealing performance of the box body is one of the key factors to ensure the stable operation of internal electrical components. Especially in outdoor or humid environments, the intrusion of moisture may cause short circuits, corrosion or other electrical problems. Therefore, the waterproof performance of the box body is crucial.

[0003] The existing waterproof technologies for the cables passing through the box body of power equipment are mainly the following three: 1. Plug-in waterproof joint technology: A waterproof joint with a plug-in design is adopted at the joint part of the cable passing through the box body. Through the effective cooperation of the waterproof material of the sealing structure, the joint part is effectively sealed to prevent moisture from invading the inverter interior through the joint. 2. Waterproof sleeve technology: A layer of waterproof sleeve, such as a silicone sleeve or a heat shrinkable sleeve, is sleeved outside the cable. These sleeves have good elasticity and water resistance, and can prevent moisture from entering the machine interior along the cable to a certain extent. 3. Cable passing through rubber ring technology: The cables are passed through the rubber rings one by one to achieve a tight connection between the rubber rings and the cables, so as to achieve the waterproof purpose. Among the current three main solutions, the plug-in waterproof joint technology has better waterproof performance, but due to special waterproof materials and sealing structures, the cost is generally high. When there are more cables passing through the box body, it requires more area and has higher requirements for the box body structure; the waterproof sleeve technology has lower cost, is convenient to operate, and has a wider application range, but there will be a situation where condensation enters the machine interior along the cable, which means it is not waterproof; for the cable passing through rubber ring technology, generally, the cables need to be passed through the rubber rings one by one manually, which will waste more labor costs. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a fastener and a power equipment box body containing the fastener to solve the problems raised in the above background technique. By changing the waterproof structure of the cable passing through the box body, better waterproofing can be achieved, while reducing costs, installation difficulty, improving the application range, and enhancing the stability of the operation of power equipment.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A fastener, characterized in that: it includes a fastener main body, a rubber ring fixing structure, a fastening nut and a rubber ring. An external thread is provided on the outer side of the fastener main body. The rubber ring fixing structure is fixedly arranged at one end of the fastener main body. The fastening nut is threadedly connected to the other end of the fastener main body. The rubber ring is arranged inside the rubber ring fixing structure and the rubber ring is sleeved outside the fastener main body.

[0007] In a preferred technical solution, the main body of the fastener extends to the outside of the rubber ring fixing structure, and a nut is threadedly connected to the outside of the main body of the fastener, and the nut is located outside the rubber ring fixing structure.

[0008] An electric power equipment box body, characterized in that it includes the fastener described above.

[0009] In a preferred technical solution, the electric power equipment box body includes a box wall, the main body of the fastener passes through the box wall, and the rubber ring is closely attached to the outside of the box wall.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] 1. It can effectively solve the problem of waterproofing of the incoming cable of the box body, and at the same time reduce the installation difficulty and cost.

[0012] 2. Filling the connecting parts with epoxy resin can completely fill the gaps between multiple cables, preventing water from entering the box body along the cables and improving the system safety.

[0013] 3. By tightening the fastening nut, the main body of the fastener is closely attached to the box body. Due to the existence of the rubber ring, the main body of the fastener perfectly fits the box body, preventing water from flowing in through the gap between the main body of the fastener and the box body and improving the system stability.

[0014] 4. It has wide applicability and can be applied to electric power equipment of different types and powers to meet various different requirements. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 1 It is a schematic structural diagram of Embodiment 1 of the present utility model.

[0017] Figure 2 It is a schematic structural diagram of a part of the box body including the fastener in Embodiment 1 of the present utility model.

[0018] Figure 3 It is a schematic structural diagram after the cable and the box body are assembled in Embodiment 1 of the present utility model.

[0019] Figure 4 It is a schematic structural diagram of Embodiment 2 of the present utility model.

[0020] Figure 5This is a schematic structural diagram of the box body part including fasteners in Embodiment 2 of the present utility model.

[0021] Figure 6 This is a schematic structural diagram of the cable and the box body after assembly in Embodiment 2 of the present utility model.

[0022] Annotation of reference numerals in the drawings: 1 - fastener body, 2 - rubber ring fixing structure, 3 - fastening nut, 4 - rubber ring, 5 - cable, 6 - glue filling layer, 7 - nut, 8 - box wall. Detailed implementation manners

[0023] The following embodiments will describe the present utility model in detail with reference to the drawings. In the drawings or descriptions, similar or identical parts use the same reference numerals, and in actual applications, the shapes, thicknesses, or heights of the components can be enlarged or reduced. The embodiments listed in the present utility model are only used to illustrate the present utility model and are not used to limit the scope of the present utility model. Any obvious modification or change made to the present utility model does not depart from the spirit and scope of the present utility model. Embodiment 1

[0024] As Figure 1 shown, a fastener includes a fastener body 1, a rubber ring fixing structure 2, a fastening nut 3, and a rubber ring 4. An external thread is provided on the outer side of the fastener body 1. The rubber ring fixing structure 2 is fixedly arranged at one end of the fastener body 1. The fastening nut 3 is threadedly connected to the other end of the fastener body 1. The rubber ring 4 is arranged inside the rubber ring fixing structure 2 and the rubber ring 4 is sleeved on the outside of the fastener body 1. The fastener body 1 extends to the outside of the rubber ring fixing structure 2. A nut 7 is threadedly connected to the outside of the fastener body 1. The nut 7 is located outside the rubber ring fixing structure 2.

[0025] As Figure 2 shown, a power equipment box body includes a fastener and includes a box wall. The fastener body 1 passes through the box wall, and the rubber ring 4 is closely attached to the outside of the box wall.

[0026] As Figure 3 shown, in actual use, the cable 5 is passed from one end of the fastener body 1 to the other end of the fastener body 1. Epoxy resin glue with good fluidity is used to fill between and outside the connection parts of the cable 5 with the fastener body 1, the rubber ring fixing structure 2, the fastening nut 3, and the rubber ring 4 to form a glue filling layer 6. The connection parts between the nut 7 and the cable 5 and the outside are also filled with the glue filling layer 6. There are multiple cables 5, and the glue filling layer 6 is also filled between the cables 5. Embodiment 2

[0027] As Figure 4As shown in the figure, a fastener structure includes a fastener body 1, a rubber ring fixing structure 2, a fastening nut 3, and a rubber ring 4. The outer side of the fastener body 1 is provided with an external thread. The rubber ring fixing structure 2 is fixedly arranged at one end of the fastener body 1. The fastening nut 3 is threadedly connected to the other end of the fastener body 1. The rubber ring 4 is arranged inside the rubber ring fixing structure 2 and the rubber ring 4 is sleeved outside the fastener body 1.

[0028] As Figure 5 shown in the figure, an electric power equipment box body contains fasteners, including a box wall. The fastener body 1 passes through the box wall, and the rubber ring 4 is closely attached to the outer side of the box wall.

[0029] As Figure 6 shown in the figure, in actual use, the cable 5 is threaded from one end of the fastener body 1 to the other end of the fastener body 1. Epoxy resin glue with good fluidity is used to fill the connection parts between the cable 5 and the fastener body 1, the rubber ring fixing structure 2, the fastening nut 3, and the rubber ring 4 and the outside to form a glue filling layer 6. There are multiple cables 5, and the glue filling layer 6 is also filled between the cables 5.

[0030] As Figures 1-6 shown in the figure,

[0031] In the present utility model, by pouring glue at the connection parts between the cable 5 and other components, and by tightening the fastening nut 3 to tightly attach the rubber ring 4 to the box wall 8 of the electric power equipment, the purpose of preventing water from flowing in when the cable 5 passes through the box wall 8 is achieved. Through this structure, the risk of water entering the box wall 8 from the connection gaps of the cable 5 can be reduced, and at the same time, the risk of water entering from the gaps between the box wall 8 and the connection components can be reduced, achieving double waterproofing and improving the safety and reliability of the system operation.

[0032] The fastener body 1 is provided with an external thread. The rubber ring fixing structure 2 is fixed at a suitable position on the fastener body 1 and cannot move. A rubber ring of a suitable size is inserted from one side of the fastener body 1 and is attached to one side of the rubber ring fixing structure 2. The fastening nut 3 is provided with an internal thread. The fastening nut 3 is screwed into one end of the fastener body 1 and can move. The nut 7 is on one side of the fastener body 1 and can move, and is used to fasten the cable 5. Appropriate lengths are reserved at both ends of the cable 5, and epoxy resin glue is used to fill the gaps between the cable 5 and each connection component. It is applicable to electric power equipment of different powers and to various positions of the box body, meeting different design requirements. The design of the electric power equipment can effectively prevent water from entering the box body in two aspects, while reducing the installation difficulty, reducing the material cost, and improving the stability and reliability of the system operation.

[0033] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0034] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fastener, characterized in that: The invention comprises a fastener body (1), a rubber ring fixing structure (2), a fastening nut (3) and a rubber ring (4), wherein the outer side of the fastener body (1) is provided with an external thread, the rubber ring fixing structure (2) is fixedly arranged at one end of the fastener body (1), the fastening nut (3) is connected to the other end of the fastener body (1) through a thread, the rubber ring (4) is arranged on the inner side of the rubber ring fixing structure (2) and the rubber ring (4) is sleeved on the outer side of the fastener body (1), and epoxy resin glue is filled between the cable (5) and the fastener body (1), the rubber ring fixing structure (2), the fastening nut (3) and the rubber ring (4) and on the outer side to form a glue filling layer (6).

2. A fastener according to claim 1, characterized in that: The fastener body (1) extends to the outside of the rubber ring fixing structure (2), and the outside of the fastener body (1) is connected to a nut (7) via a thread, and the nut (7) is located on the outside of the rubber ring fixing structure (2).

3. A power equipment box, characterized in that: The invention comprises the fastener described in claim 1 or claim 2.

4. The power equipment box according to claim 3, characterized in that: It comprises a box wall (8), the fastener body (1) passes through the box wall (8), and the rubber ring (4) is tightly attached to the outer side of the box wall (8).

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