Heat shrinkable insulating through-wall bushing

Abstract

This utility model discloses a heat-shrinkable insulating through-wall sleeve box, comprising: a fixing base block, an insulating tube fixedly connected to the inner wall of the fixing base block, and positioning blocks fixedly connected to all four sides of the inner wall of the insulating tube. The front surface of the positioning blocks has positioning holes. The positioning holes on the front surface of the positioning blocks precisely serve as the installation interface for cable fasteners, providing a matching embedding space for the fasteners, allowing them to be tightly and stably embedded. The connecting structure between the positioning holes and the rear surface of the positioning blocks forms a through channel, allowing the fasteners to completely penetrate the positioning blocks, thus providing a firm constraint on the cable in both directions. This dual-fixing method significantly improves the installation firmness of the cable within the insulating tube. Even in through-wall scenarios with continuous vibration or external impact interference, the cable can maintain a stable position, effectively reducing cable wear or poor contact caused by shaking, thereby providing a reliable guarantee for the long-term stable operation of the entire sleeve box.

Description

Technical Field

[0001] This utility model relates to the field of power technology, and in particular to heat-shrinkable insulating through-wall bushing boxes. Background Technology

[0002] Wall bushings, also known as wall-penetrating pipes, waterproof sleeves, or wall-embedded pipes, are divided into rigid and flexible waterproof sleeves. In the electrical industry, those used for conducting electricity are called AC wall bushings. Based on material, they can be divided into dry-type capacitor-type AC wall bushings and porcelain-insulated AC wall bushings, abbreviated as silicone rubber bushings and porcelain bushings, respectively.

[0003] Traditional types of equipment lack a precise installation interface with positioning holes on the front surface of the positioning block, making it difficult to stably embed cable fasteners. This can easily lead to misalignment or loosening during installation. Furthermore, the lack of a connection between the positioning holes and the rear surface of the positioning block prevents the formation of bidirectional constraints, allowing only unilateral cable fixation. Under wall-penetrating vibrations or external interference, the cables are prone to loosening and shifting. Utility Model Content

[0004] The purpose of this utility model is to provide a heat-shrinkable insulating through-wall sleeve box. The positioning hole on the front surface of the positioning block accurately serves as the installation interface for the cable fixing component, allowing the fixing component to be stably embedded. At the same time, the connection structure between the positioning hole and the rear surface of the positioning block allows the fixing component to pass through the positioning block, forming a two-way constraint. This design avoids the problem of easy loosening when the cable is fixed on only one side. The double fixing greatly improves the firmness of the cable in the insulating tube. Even in the case of vibration or external interference in the through-wall scenario, the cable can maintain a stable position, effectively reducing wear or poor contact caused by shaking, thereby ensuring the stable operation of the entire sleeve box.

[0005] To achieve the above objectives, a heat-shrinkable insulating through-wall sleeve box is provided, comprising: a fixing base block, an insulating tube fixedly connected to the inner wall of the fixing base block, and positioning blocks fixedly connected to all four sides of the inner wall of the insulating tube. Positioning holes are formed on the front surface of each positioning block. The fixing base block provides stable support for the insulating tube, and the positioning blocks and positioning holes provide a basic guarantee for cable fixing. According to the heat-shrinkable insulating through-wall sleeve box, the interior of the positioning hole and the rear surface of the positioning block are connected, and the positioning blocks are symmetrically arranged on the front and rear sides of the inner wall of the insulating tube. The connected structure achieves double fixation, and the symmetrical layout enhances the stability of the cable centering and reduces shaking and deviation.

[0006] According to the heat-shrinkable insulating through-wall sleeve box, a damping connecting block is fixedly connected to the outer surface of the insulating tube. The damping connecting blocks are symmetrically arranged on the front and rear sides of the outer surface of the fixed base block. The damping connecting blocks buffer vibration, and the symmetrical arrangement ensures that the fixed base block is subjected to balanced force, thereby improving the overall installation stability.

[0007] According to the heat-shrinkable insulating through-wall sleeve box, the number of positioning holes and the number of positioning blocks are set in a corresponding manner, and the fixing base block is located between two positioning blocks. The corresponding number ensures complete fixing function, the central layout balances the force, and ensures long-term stable operation of the structure.

[0008] The above-mentioned solution has the following beneficial effects: This utility model features an insulating tube, a positioning block, and a positioning hole. The positioning hole on the front surface of the positioning block precisely serves as the installation interface for the cable fixing component, allowing the fixing component to be stably embedded. Simultaneously, the connection between the positioning hole and the rear surface of the positioning block allows the fixing component to penetrate the positioning block, forming a two-way constraint. This design avoids the problem of easy loosening when the cable is fixed on only one side. The double fixing significantly improves the cable's firmness within the insulating tube. Even in scenarios involving wall penetration with vibration or external interference, the cable can maintain a stable position, effectively reducing wear or poor contact caused by shaking, thereby ensuring the stable operation of the entire conduit box.

[0009] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a perspective view of the heat-shrinkable insulating through-wall bushing box of this utility model; Figure 2 This is a front view of the heat-shrinkable insulating through-wall bushing box of this utility model; Figure 3 This is a cross-sectional perspective view of the heat-shrinkable insulating through-wall bushing box of this utility model; Figure 4 This utility model Figure 3 Enlarged view of the structure at point A in the middle.

[0011] Legend: 1. Fixed base block; 2. Insulating tube; 3. Damping connecting block; 4. Positioning block; 5. Positioning hole. Detailed Implementation

[0012] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0013] Reference Figure 1-4The present invention relates to a heat-shrinkable insulating through-wall sleeve box, comprising: a fixing base block 1, an insulating tube 2 fixedly connected to the inner wall of the fixing base block 1, the fixing base block 1 providing a stable mounting base for the insulating tube 2 to ensure that the insulating tube 2 maintains its structural positioning in the through-wall scenario, positioning blocks 4 fixedly connected to all four sides of the inner wall of the insulating tube 2, the insulating tube 2 using the positioning blocks 4 on the inner wall to achieve auxiliary limiting of the through-wall cable, preventing the cable from shaking or shifting inside the tube, and positioning holes 5 provided on the front surface of the positioning blocks 4, the positioning holes 5 providing an installation interface for cable fixing parts or marking parts, enhancing the fixing stability of the cable on the positioning blocks 4.

[0014] The interior of the positioning hole 5 is connected to the rear surface of the positioning block 4. This connection facilitates the cable fixing component to pass through the positioning block 4, achieving dual fixation of the cable in the front and rear directions. The positioning blocks 4 are symmetrically arranged on the front and rear sides of the inner wall of the insulating tube 2. The symmetrical positioning blocks 4 form a two-way clamping structure, further improving the centering positioning effect of the cable in the insulating tube 2. The outer surface of the insulating tube 2 is fixedly connected to a damping connecting block 3. The insulating tube 2 forms an elastic buffer connection with the fixed base block 1 through the damping connecting block 3, reducing the vibration transmission at the wall penetration point. The damping connecting blocks 3 are symmetrically arranged on the front and rear sides of the outer surface of the fixed base block 1. The symmetrical damping connecting blocks 3 make the fixed base block 1 bear force evenly, enhancing the fit stability between the sleeve box and the wall mounting surface. The number of positioning holes 5 and the number of positioning blocks 4 are set in a corresponding manner. The one-to-one correspondence ensures that each positioning block 4 can achieve its function through an independent positioning hole 5, avoiding the loss of positioning function. The fixed base block 1 is located between two positioning blocks 4. The central position of the fixed base block 1 can balance the force on the two positioning blocks 4, improving the overall structural stability.

[0015] Working Principle: First, the fixing block 1 is pre-positioned at the wall penetration hole. Its structural characteristics provide basic support for the entire assembly, ensuring the stability of subsequent component installation. The insulating tube 2 is then fixedly connected to the fixing block 1 via the damping connecting block 3 on its outer surface. The elastic buffering characteristics of the damping connecting block 3 reduce the structural impact of vibration at the wall penetration point. Simultaneously, the symmetrical placement of the damping connecting blocks 3 on the front and back sides of the outer surface of the fixing block 1 ensures balanced force distribution. The cable to be penetrated is then inserted from one end of the insulating tube 2, passing through the tube cavity. During this process, the positioning blocks 4 around the inner wall of the insulating tube 2 provide initial auxiliary restraint for the cable, preventing significant swaying or displacement during insertion. The cable is positioned so that it is centered inside the insulating tube 2. At this time, the symmetrically arranged positioning blocks 4 on the front and rear sides will form a two-way clamping structure to further stabilize the cable position. Then, the cable fixing component is installed through the positioning hole 5 on the front surface of the positioning block 4. The fixing component passes through the positioning block 4 by utilizing the connection structure between the positioning hole 5 and the rear surface of the positioning block 4, so as to achieve double fixation of the cable in the front and rear directions. Since the number of positioning holes 5 and positioning blocks 4 corresponds one-to-one, it can be ensured that each positioning block 4 can fully perform its fixing function. The fixing base block 1 is confirmed to be centered between the two positioning blocks 4 to balance the force on the two positioning blocks 4. Finally, the installation and use of the heat shrinkable insulating through-wall sleeve box is completed, ensuring the stable operation of the overall structure in the through-wall scenario.

[0016] In the description of this utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," and "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. At the same time, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "fixed installation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction relationship between two elements. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0017] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A heat shrinkable insulated wall bushing kit comprising: The fixed base block (1) is characterized in that: an insulating tube (2) is fixedly connected to the inner wall of the fixed base block (1), and positioning blocks (4) are fixedly connected to the inner wall of the insulating tube (2) on all four sides, and positioning holes (5) are opened on the front surface of the positioning blocks (4).

2. The heat-shrinkable insulation bushing kit of claim 1, wherein: The interior of the positioning hole (5) is connected to the rear surface of the positioning block (4), and the positioning block (4) is symmetrically arranged on the front and rear sides of the inner wall of the insulating tube (2).

3. The heat-shrinkable insulation wall bushing kit of claim 1, wherein: The outer surface of the insulating tube (2) is fixedly connected to a damping connecting block (3), which is symmetrically arranged on the front and rear sides of the outer surface of the fixed base block (1).

4. The heat-shrinkable insulation wall bushing kit of claim 1, wherein: The number of positioning holes (5) and the number of positioning blocks (4) are set in correspondence, and the fixed base block (1) is located between the two positioning blocks (4).

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