Waterproof, insulated and sealed thermal shrinkage intermediate joint

Abstract

The utility model is suitable for the technical field of thermal shrinkage intermediate joints, and provides a waterproof insulated sealed thermal shrinkage intermediate joint, which comprises a joint thermal shrinkage sleeve, the cable joint is arranged on the inner side wall of the joint thermal shrinkable sleeve; the connecting sleeve is integrally formed at one end of the joint thermal shrinkable sleeve in an injection molding manner; the cable thermal shrinkable sleeve is integrally formed at one end, far away from the joint thermal shrinkable sleeve, of the connecting sleeve through injection molding; the annular inner rib is adhered and fixed on the inner side wall of the cable thermal shrinkable sleeve through an adhesive; the fixing block and the five limiting blocks are adhered and fixed on the outer side wall of the cable thermal shrinkable sleeve through an adhesive, and the fixing block is positioned on one side of the five limiting blocks; the cable thermal shrinkable sleeve after thermal shrinkage deformation is pressed on the outer wall of the cable again through the fastening binding strip, so that tight and firm connection between the cable thermal shrinkable sleeve and the cable can be ensured, the cable thermal shrinkable sleeve is prevented from falling off from the cable under the action of external force, the sealing performance of the cable thermal shrinkable sleeve after thermal shrinkage is ensured, and the waterproof capability is further ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat shrinkable intermediate joints, in particular to a waterproof, insulating and sealed heat shrinkable intermediate joint. Background Art

[0002] Heat shrinkable intermediate joints are widely used in the intermediate connections of cross-linked cables or oil-immersed cables with voltage levels of 35KV and below. Compared with traditional cable accessories, they have the characteristics of small size, light weight, safety, reliability and easy installation.

[0003] Traditional heat shrink intermediate joints are connected to cables by socketing or hot melting, which is troublesome and not very strong during connection. When encountering external force, the cable can easily fall off the heat shrink intermediate joint to a certain extent, affecting its use.

[0004] Therefore, a waterproof, insulating and sealed heat shrinkable intermediate joint is proposed. Utility Model Content

[0005] The utility model provides a waterproof, insulating and sealed heat shrinkable intermediate joint, aiming to solve the above problems.

[0006] The utility model is implemented as follows: a waterproof, insulating and sealed heat-shrinkable intermediate joint, comprising: a joint heat-shrinkable sleeve; a cable joint arranged on the inner wall of the joint heat-shrinkable sleeve; a connecting sleeve integrally injection-molded at one end of the joint heat-shrinkable sleeve; a cable heat-shrinkable sleeve integrally injection-molded on the connecting sleeve away from one end of the joint heat-shrinkable sleeve; an annular inner rib fixed to the inner wall of the cable heat-shrinkable sleeve by adhesive adhesion; and a fixed block and five limit blocks fixed to the outer wall of the cable heat-shrinkable sleeve by adhesive adhesion, the fixed block being located on one side of the five limit blocks; a fastening groove provided on the outer wall of the fixed block; a first oblique tooth integrally molded on the inner wall of the fastening groove; and a fastening tie integrally molded on the outer wall of the fixed block near the position below the fastening groove; a second oblique tooth integrally molded on the outer wall of the fastening tie; and a through groove provided on the outer wall of the limit block.

[0007] Preferably, the one fixing block and the five limiting blocks are axially arranged at equal intervals on the outer side wall of the cable heat shrink sleeve.

[0008] Preferably, the cross-sections of the first bevel teeth and the second bevel teeth are both right-angled triangle structures, and the inclined surfaces of the first bevel teeth and the second bevel teeth match.

[0009] Preferably, the fastening tie passes through a through slot provided on the limiting block.

[0010] Preferably, there are three annular inner ribs in total, and the three annular inner ribs are arranged at equal intervals on the inner side wall of the cable heat shrink sleeve.

[0011] Preferably, the joint heat shrink sleeve and the connection sleeve are both connected to the cable heat shrink sleeve.

[0012] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0013] By tightening the tie strips, the cable heat shrink sleeve is pressed again against the outer wall of the cable after heat shrinkage deformation, which can ensure that the cable heat shrink sleeve is tightly and firmly connected to the cable, and prevent the cable heat shrink sleeve from falling off the cable due to external force, thereby ensuring the sealing of the cable heat shrink sleeve after heat shrinkage, and thus ensuring the waterproof ability. After heat shrinkage, the three annular inner ribs are tightly attached to the outer wall of the cable, and the annular inner ribs can be used to separate the space between the cable heat shrink sleeve and the cable into independent spaces, thereby achieving multiple sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the connection sleeve and cable heat shrink sleeve of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the joint heat shrink sleeve of the utility model;

[0017] Figure 4 This is a side sectional view of the cable heat shrink sleeve of the present utility model;

[0018] Figure 5 This utility model Figure 1 A in the enlarged view.

[0019] In the figure: 1. Connector heat shrink sleeve; 2. Cable connector; 3. Connecting sleeve; 4. Cable heat shrink sleeve; 5. Annular inner rib; 6. Fixing block; 7. Limiting block; 8. Fastening groove; 9. First oblique tooth; 10. Fastening tie; 11. Second oblique tooth; 12. Through groove. DETAILED DESCRIPTION

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0021] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] The present invention provides a waterproof, insulating and sealed heat shrinkable intermediate joint. Figure 1-5 As shown, it includes a joint heat shrink sleeve 1, a cable joint 2 is provided on the inner wall of the joint heat shrink sleeve 1, and a connecting sleeve 3 is integrally injection-molded at one end of the joint heat shrink sleeve 1, and a cable heat shrink sleeve 4 is integrally injection-molded at the end of the connecting sleeve 3 away from the joint heat shrink sleeve 1, the joint heat shrink sleeve 1 and the connecting sleeve 3 are both connected to the cable heat shrink sleeve 4, an annular inner rib 5 is fixed to the inner wall of the cable heat shrink sleeve 4 by adhesive adhesion, a fixing block 6 and five limiting blocks 7 are fixed to the outer wall of the cable heat shrink sleeve 4 by adhesive adhesion, one fixing block 6 is located on one side of the five limiting blocks 7, a fastening groove 8 is opened on the outer wall of one side of the fixing block 6, a first oblique tooth 9 is integrally molded on the inner wall of the fastening groove 8, and a position below the fastening groove 8 is located on the outer wall of one side of the first oblique tooth 9. A fastening strip 10 is integrally formed at the position, and a second bevel tooth 11 is integrally formed on the outer wall of one side of the fastening strip 10. A through groove 12 is provided on the outer wall of one side of the limit block 7 near the side of the cable heat shrink sleeve 4. The fastening strip 10 passes through the through groove 12 provided on the limit block 7. The outer side walls of the fixed block 6, the limit block 7, the first bevel tooth 9, the fastening strip 10 and the second bevel tooth 11 are all coated with a fire-resistant coating. Through the provision of the fire-resistant coating, the fixed block 6, the limit block 7, the first bevel tooth 9, the fastening strip 10 and the second bevel tooth 11 can be prevented from thermal deformation when the joint heat shrink sleeve 1, the connecting sleeve 3 and the cable heat shrink sleeve 4 are subjected to high-temperature heat shrinkage, thereby ensuring their structural strength. The joint heat shrink sleeve 1, the connecting sleeve 3 and the cable heat shrink sleeve 4 are made of insulating material.

[0023] It should be noted that, since the existing heat shrink intermediate joints are connected to the cables by means of socketing or hot melting, the connection is troublesome and not very firm. When encountering external force, the cable can easily fall off the heat shrink intermediate joint to a certain extent, affecting the use. In this embodiment, the cable heat shrink sleeve 4 is pressed again on the outer wall of the cable after heat shrinkage deformation by tightening the tie strip 10, which can ensure that the cable heat shrink sleeve 4 is tightly connected to the cable, avoid the cable heat shrink sleeve 4 from falling off from the cable due to external force, ensure the sealing of the cable heat shrink sleeve 4 after heat shrinkage, and then ensure the waterproof ability. The three annular inner ribs 5 are tightly attached to the outer wall of the cable after heat shrinkage, and the annular inner ribs 5 can be used to separate the space between the cable heat shrink sleeve 4 and the cable into independent spaces, thereby achieving multiple sealing.

[0024] Specifically, in this embodiment, this solution mainly includes a fastening tie strip 10. When the cables are connected, the two ends of the cable are respectively inserted into the joint heat shrink sleeve 1 and connected to the cable joint 2. The cable heat shrink sleeve 4 is wrapped around the outside of the cable. At this time, the joint heat shrink sleeve 1, the connecting sleeve 3 and the cable heat shrink sleeve 4 are heated at high temperature. The joint heat shrink sleeve 1, the connecting sleeve 3 and the cable heat shrink sleeve 4 are deformed and tightened by heat. The joint heat shrink sleeve 1 and the connecting sleeve 3 are tightly wrapped around the connection between the cable joint 2 and the cable. The cable heat shrink sleeve 4 is heat-shrunk and wrapped around the outer wall of the cable. At this time, The fastening strip 10 passes through the through slots 12 on the five limit blocks 7 in sequence, and one end of the fastening strip 10 passes through the fastening slot 8 on the fixed block 6, and the fastening strip 10 is gradually pulled. The first bevel tooth 9 moves in the fastening slot 8. The right-angled sides of the first bevel tooth 9 and the second bevel tooth 11 engage with each other to ensure the unidirectional movement of the fastening strip 10 in the fixed block 6. The fastening strip 10 can be used to fasten the cable heat shrink sleeve 4 to the outer wall of the cable to prevent the cable heat shrink sleeve 4 from falling off the cable, thereby ensuring the waterproof insulation sealing ability of the heat shrink intermediate joint.

[0025] In a further preferred embodiment of the present invention, Figure 1 、 Figure 4 and Figure 5 As shown, a fixing block 6 and five limiting blocks 7 are axially and evenly spaced on the outer side wall of the cable heat shrink sleeve 4 .

[0026] In this embodiment, by axially equidistantly arranging the fixing blocks 6 and the limiting blocks 7, the fastening tie 10 can pass through the fixing blocks 6 and the limiting blocks 7 to press the cable heat shrink sleeve 4 onto the cable, thereby preventing the cable heat shrink sleeve 4 from falling off the cable, ensuring the sealing of the cable heat shrink sleeve 4 after heat shrinkage, and further ensuring the waterproof capability.

[0027] In a further preferred embodiment of the present invention, Figure 1 、 Figure 4 and Figure 5 As shown, the cross-sections of the first oblique teeth 9 and the second oblique teeth 11 are both right-angled triangle structures, and the inclined surfaces of the first oblique teeth 9 and the second oblique teeth 11 match.

[0028] In this embodiment, the right-angled sides of the first bevel teeth 9 and the second bevel teeth 11 are engaged with each other, which can ensure the unidirectional movement of the fastening strip 10 in the fixing block 6, so that the cable heat shrink sleeve 4 can be fastened to the outer wall of the cable using the fastening strip 10.

[0029] In a further preferred embodiment of the present invention, Figure 2 As shown, there are three annular inner ribs 5 in total, and the three annular inner ribs 5 are arranged at equal intervals on the inner wall of the cable heat shrink sleeve 4 .

[0030] In this embodiment, by providing three annular inner ribs 5 , the annular inner ribs 5 can be used to separate the space between the cable heat shrink sleeve 4 and the cable into independent spaces, thereby achieving multiple sealing.

[0031] It should be noted that for the aforementioned embodiments, for simplicity of description, they are all expressed as a series of action combinations. However, those skilled in the art should be aware that the present invention is not limited by the order of the actions described, because according to the present invention, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in this specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0032] In the several embodiments provided in this application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely illustrative, such as the division of the above-mentioned units. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the coupling or communication connection between each other shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.

[0033] The units described above as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope to be protected by the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making any creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also fall within the scope to be protected by the present invention.

Claims

1. A waterproof, insulating and sealed heat shrinkable intermediate joint, characterized in that: include: Joint heat shrink sleeve (1); A cable connector (2) provided on the inner side wall of the connector heat shrink sleeve (1); A connecting sleeve (3) integrally injection-molded at one end of the joint heat shrink sleeve (1); A cable heat shrink sleeve (4) is integrally injection-molded on the connecting sleeve (3) and is located at one end away from the connector heat shrink sleeve (1); An annular inner rib (5) fixed to the inner side wall of the cable heat shrink sleeve (4) by adhesive bonding; and A fixing block (6) and five limiting blocks (7) fixed to the outer side wall of the cable heat shrink sleeve (4) by adhesive bonding, wherein the fixing block (6) is located on one side of the five limiting blocks (7); A fastening groove (8) is provided on the outer side wall of the fixing block (6); a first oblique tooth (9) integrally formed on the inner side wall of the fastening groove (8); and A fastening tie strip (10) integrally formed on the outer side wall of the fixing block (6) at a position below the fastening groove (8); A second oblique tooth (11) integrally formed on the outer side wall of the fastening tie bar (10); A through groove (12) is provided on the outer side wall of the limiting block (7).

2. A waterproof, insulating, and sealed heat-shrinkable intermediate joint according to claim 1, characterized in that: One fixing block (6) and five limiting blocks (7) are arranged on the outer side wall of the cable heat shrink sleeve (4) at equal axial intervals.

3. The waterproof, insulating and sealed heat shrinkable intermediate joint according to claim 1, characterized in that: The cross sections of the first oblique teeth (9) and the second oblique teeth (11) are both right-angled triangle structures, and the inclined surfaces of the first oblique teeth (9) and the second oblique teeth (11) match each other.

4. The waterproof, insulating and sealed heat shrinkable intermediate joint according to claim 1, characterized in that: The fastening tie strip (10) passes through a through slot (12) provided on the limiting block (7).

5. The waterproof, insulating and sealed heat shrinkable intermediate joint according to claim 1, characterized in that: There are three annular inner ribs (5) in total, and the three annular inner ribs (5) are arranged at equal intervals on the inner side wall of the cable heat shrink sleeve (4).

6. The waterproof, insulating and sealed heat shrinkable intermediate joint according to claim 1, characterized in that: The joint heat shrink sleeve (1) and the connection sleeve (3) are both connected to the cable heat shrink sleeve (4).

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