Load switch insulating sheath

Abstract

The utility model discloses an insulating sheath for a load switch, which belongs to the technical field of load switches and comprises an insulating sheath body, corrugated tongues are arranged on the insulating sheath body, protrusions of the corrugated tongues and recesses of the corrugated tongues on the inner surface of the insulating sheath body are alternately arranged, a waterproof layer is coated on the surface of the insulating sheath body, and the waterproof layer is coated on the outer surface of the insulating sheath body. The waterproof layer comprises a polyurethane waterproof coating, an acrylic acid waterproof coating and an acrylic acid waterproof coating. The inner wall of the insulating sheath body is filled with silicone rubber. According to the utility model, through the arrangement of the corrugated tongue, the insulating sheath body has good ductility, when the insulating sheath body needs to be bent, the corrugated tongue can absorb bending stress through self elastic deformation, stress and damage caused by bending are reduced, the insulating sheath body is prevented from being subjected to stretching and compression stress, and the service life of the insulating sheath body is prolonged. Therefore, the insulating sheath body is cracked or thinned, and the insulating property of the insulating sheath body is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of load switch belongs to one kind of load switch insulation sheath. BACKGROUND

[0002] The load switch is a kind of switch electrical apparatus between circuit breaker and disconnecting switch, generally equipped with simple arc extinguishing device, since load switch needs to pass through and break load current and overload current, internal wire uses insulation sheath, can effectively isolate disconnecting switch and surrounding environment, prevent the electrical fault such as leakage, short circuit caused by mistake or damp, to reduce the risk of fire and electric shock.

[0003] The existing insulation sheath is usually wrapped on the surface of the wire, and the insulation purpose is achieved by using its own characteristics, but since the length of the wire used is different, the longer wire needs to be bent in the connection process, since the extensibility of the insulation sheath is low, when the wire is bent, the insulation sheath will be stretched and compressed, which may cause cracks or thinning of the insulation material, thereby affecting the insulation performance, and even causing safety problems such as leakage or short circuit, therefore, we provide a kind of load switch insulation sheath. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of load switch insulation sheath to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of load switch insulation sheath, including insulation sheath body, the insulation sheath body is equipped with corrugated tongue, the protruding portion of the corrugated tongue and the concave portion of the corrugated tongue on the inner face of the insulation sheath body are alternatively arranged, the surface of the insulation sheath body is coated with waterproof layer, the waterproof layer includes polyurethane waterproof coating, propylene coagulation waterproof coating and acrylic waterproof coating, the inner wall of the insulation sheath body is filled with silicone rubber.

[0006] By the setting of corrugated tongue, the insulation sheath body has good ductility, when the insulation sheath body needs to be bent, the corrugated tongue can deform elastically to absorb the bending stress, reduce the stress and damage caused by bending, thereby avoiding the insulation sheath body from being stretched and compressed, causing cracks or thinning of the insulation sheath body, and reducing the insulation performance of itself.

[0007] As a preferred embodiment of a kind of load switch insulation sheath, the thickness of the polyurethane waterproof coating, propylene coagulation waterproof coating and acrylic waterproof coating is consistent, and the thickness is uniform 0.3mm-0.6mm.

[0008] As a preferred embodiment of the insulating sheath of the load switch, the outer surface of the polyurethane waterproof coating is attached to the inner surface of the insulating sheath body by the adhesive, and the diameter of the polyurethane waterproof coating is smaller than the diameter of the insulating sheath body.

[0009] With the above scheme, the cables inside the insulating sheath body are prevented from being immersed in water by the polyurethane waterproof coating, the acrylic waterproof coating and the polyurethane waterproof coating, so that electrical faults and electric shock accidents are avoided (as the polyurethane waterproof coating, the acrylic waterproof coating and the polyurethane waterproof coating are prior art, they will not be described here).

[0010] As a preferred embodiment of the insulating sheath of the load switch, the outer surface of the polyurethane waterproof coating is attached to the inner surface of the insulating sheath body by the adhesive, and the diameter of the polyurethane waterproof coating is smaller than the diameter of the insulating sheath body.

[0011] With the above scheme, the cables inside the insulating sheath body are prevented from being immersed in water by the polyurethane waterproof coating, the acrylic waterproof coating and the polyurethane waterproof coating, so that electrical faults and electric shock accidents are avoided (as the polyurethane waterproof coating, the acrylic waterproof coating and the polyurethane waterproof coating are prior art, they will not be described here).

[0012] As a preferred embodiment of the insulating sheath of the load switch, the outer surface of the polyurethane waterproof coating is attached to the inner surface of the insulating sheath body by the adhesive, and the diameter of the polyurethane waterproof coating is smaller than the diameter of the insulating sheath body.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] 1、The utility model discloses a load switch insulating sheath, which comprises an insulating sheath body, a plurality of corrugated tongues and a plurality of tightening strips.

[0015] 2、The utility model discloses a load switch insulating sheath, which comprises an insulating sheath body, a plurality of corrugated tongues and a plurality of tightening strips.

[0016] 3、The utility model discloses a load switch insulating sheath, which comprises an insulating sheath body, a plurality of corrugated tongues and a plurality of tightening strips. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1The utility model discloses a structure schematic view.

[0018] Figure 2 It is the insulation sheath body cross section view of the utility model.

[0019] Figure 3 It is the waterproof layer explosion map of the utility model.

[0020] In the drawing: 1, insulation sheath body;2, corrugated tongue;3, silicone rubber;4, waterproof layer;41, polyurethane waterproof coating;42, propylene waterproof coating;43, acrylic waterproof coating. Specific implementation

[0021] Please refer to Figures 1-3 A kind of load switch insulation sheath, including insulation sheath body 1, insulation sheath body 1 is equipped with corrugated tongue 2, see Figure 1 Corrugated tongue 2 is evenly distributed on the surface of insulation sheath body 1, and two corrugated tongues 2 are provided with tightening strip, the protruding portion of corrugated tongue 2 and the recessed portion of corrugated tongue 2 are alternately arranged on the inner face of insulation sheath body 1, the surface of insulation sheath body 1 is coated with waterproof layer 4, waterproof layer 4 includes polyurethane waterproof coating 41, propylene waterproof coating 42 and acrylic waterproof coating 43, see Figure 3 The inner surface of polyurethane waterproof coating 41 is coated on the outer surface of propylene waterproof coating 42, the inner surface of propylene waterproof coating 42 is coated on the outer surface of acrylic waterproof coating 43, the inner surface of acrylic waterproof coating 43 is coated on the outer surface of insulation sheath body 1, by the setting of polyurethane waterproof coating 41, propylene waterproof coating 42 and acrylic waterproof coating 43, prevent the cable inside insulation sheath body 1 from being immersed by moisture, avoid the occurrence of electrical fault and electric shock (since polyurethane waterproof coating 41, propylene waterproof coating 42 and acrylic waterproof coating 43 are prior art, here just do not too much elaboration), the inner wall of insulation sheath body 1 is filled with silicone rubber 3, by the setting of corrugated tongue 2, make insulation sheath body 1 have good ductility, when needing to bend insulation sheath body 1, corrugated tongue 2 can be deformed by the elasticity of itself to absorb bending stress, reduce the stress and damage caused by bending, further avoid insulation sheath body 1 to be subjected to tensile and compressive stress, lead to the crack or thinning of insulation sheath body 1, reduce the insulation performance of itself.

[0022] See Figure 3 The thickness of polyurethane waterproof coating 41, propylene waterproof coating 42 and acrylic waterproof coating 43 is consistent, and the thickness is uniformly 0.3mm-0.6mm, by, see Figure 2As shown, the outer surface of the silicone rubber 3 is attached to the inner surface of the insulating sheath body 1 by an adhesive, and the diameter of the silicone rubber 3 is smaller than the diameter of the insulating sheath body 1. Since the silicone rubber 3 is a high-temperature insulating material, it has high flexibility, good electrical insulation performance and physical insulation performance, and further improves the insulation performance of the insulating sheath body 1.

[0023] In use, because the surface of the insulating sheath body 1 is provided with the corrugated tongue 2, the insulating sheath body 1 has good ductility. When the insulating sheath body 1 needs to be bent, the corrugated tongue 2 can deform elastically to absorb the bending stress, reduce the stress and damage caused by bending, and further avoid the insulating sheath body 1 from being subjected to tensile and compressive stress, so as to avoid the insulating sheath body 1 from cracking or thinning, and reduce its insulation performance. In addition, since the silicone rubber 3 is a high-temperature insulating material, it has high flexibility, good electrical insulation performance and physical insulation performance, and further improves the insulation performance of the insulating sheath body 1. Finally, the polyurethane waterproof coating 41, the propylene waterproof coating 42 and the acrylic waterproof coating 43 are arranged to prevent the cables inside the insulating sheath body 1 from being immersed in water, and to avoid electrical faults and electric shock accidents (since the polyurethane waterproof coating 41, the propylene waterproof coating 42 and the acrylic waterproof coating 43 are prior art, they will not be described here).

Claims

1. A load switch insulating jacket, characterized by: The utility model relates to an insulating sheath body (1) is provided with corrugated tongue (2), the protruding portion of corrugated tongue (2) and the recessed portion of corrugated tongue (2) are set alternately on the inner face of insulating sheath body (1), the surface of insulating sheath body (1) is coated with waterproof layer (4), waterproof layer (4) includes polyurethane waterproof coating (41), prop condensation waterproof coating (42) and acrylic waterproof coating (43), the inner wall of insulating sheath body (1) is filled with silicone rubber (3).

2. A load switch insulating jacket according to claim 1, characterized in that: The thickness of the polyurethane waterproof coating (41), the prop condensation waterproof coating (42) and the acrylic waterproof coating (43) is uniform, and the thickness is uniformly 0.3mm-0.6mm.

3. A load switch insulating jacket according to claim 1, wherein: The inner surface of the polyurethane waterproof coating (41) is coated on the outer surface of the prop condensation waterproof coating (42), the inner surface of the prop condensation waterproof coating (42) is coated on the outer surface of the acrylic waterproof coating (43), and the inner surface of the acrylic waterproof coating (43) is coated on the outer surface of the insulating sheath body (1).

4. A load switch insulating jacket according to claim 1, wherein: The outer surface of the silicone rubber (3) is attached to the inner surface of the insulating sheath body (1) through an adhesive, and the diameter of the silicone rubber (3) is less than the diameter of the insulating sheath body (1).

5. A load switch insulating jacket according to claim 1, wherein: The corrugated tongues (2) are uniformly distributed on the surface of the insulating sheath body (1), and a tightening strip is arranged between two corrugated tongues (2).

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