Double-layer heat shrink tube for automobile wire harness joint

Abstract

The utility model discloses a double-layer heat shrink tube for an automobile wire harness joint, which comprises an outer-layer heat shrink tube and relates to the field of heat shrink tube products, a support is slidably connected in the outer-layer heat shrink tube, a disconnection port is arranged in the support, the upper surface of the support is connected with a first supporting plate, a cross rod is connected in the first supporting plate, and a second supporting plate is arranged in the cross rod. A limiting mechanism is arranged above the support, a second supporting plate is connected to the upper surface of the support, a sliding groove is formed in the second supporting plate, a baffle is connected to the bottom face of the support, a nylon rope is installed in the outer-layer heat shrink tube, and through cooperation of the support, the nylon rope and other components, the support can support the sleeve. The nylon rope can improve the pulling resistance of the outer-layer heat shrink tube, so that the service life of the outer-layer telescopic tube is prolonged, and the problem that the connector cannot be inserted into the heat shrink tube due to the deformation of the port and is inconvenient to use is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat shrinkable tube products, in particular to a double-layer heat shrinkable tube for an automotive wire harness joint. Background Technique

[0002] A heat shrinkable tube is a heat-shrinkable polyolefin tube shell, and the material is modified by a special polymer. By heating, the tube shell can be tightly attached to the surface of the wire or the outer shell of various devices, so as to achieve the effects of electrical insulation, moisture-proof, rust-proof, and beautifying the appearance.

[0003] For the connection between many live parts on an automobile, corresponding insulation isolation of the wire harness needs to be carried out through a heat shrinkable tube. By inserting the wire harness joints at both ends into the heat shrinkable tube and heating at a high temperature to make the heat shrinkable tube shrink, so that the heat shrinkable tube is sleeved on the joint. However, when inserting the joint into the heat shrinkable tube, the inner diameter of the selected heat shrinkable tube cannot differ too much from the size of the joint. And the heat shrinkable tube is relatively soft, and when slightly squeezed, the port of the heat shrinkable tube will be deformed. This leads to the need to adjust the shape of the interface of the heat shrinkable tube when inserting the joint into the heat shrinkable tube, which is not very convenient to use. To solve this technical problem, the utility model proposes a double-layer heat shrinkable tube for an automotive wire harness joint. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a double-layer heat shrinkable tube for an automotive wire harness joint, which can effectively solve the problems mentioned in the background technique.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A double-layer heat shrinkable tube for an automotive wire harness joint, including an outer heat shrinkable tube, a bracket is slidably connected inside the outer heat shrinkable tube, a break interface is opened inside the bracket, a first support plate is connected to the upper surface of the bracket, a cross bar is connected inside the first support plate, a limiting mechanism is arranged above the bracket, a second support plate is connected to the upper surface of the bracket, a sliding groove is opened inside the second support plate, a baffle is connected to the bottom surface of the bracket, a nylon rope is installed inside the outer heat shrinkable tube, and an inner plastic tube is installed inside the outer heat shrinkable tube.

[0007] Preferably, the limiting mechanism includes a sleeve, the inner part of the sleeve is rotatably connected to the outer surface of the cross bar, and the outer surface of the sleeve is slidably connected to the inside of the first support plate.

[0008] Preferably, a blocking plate is connected to the outer surface of the sleeve, the outer surface of the blocking plate is slidably connected to the inside of the first support plate, and the outer surface of the blocking plate is slidably connected to the inner side wall of the sliding groove.

[0009] Preferably, one end of the partition board is connected with a limiting plate, and the outer surface of the limiting plate is slidably connected with the inner side wall of the chute.

[0010] Preferably, the outer surface of the bracket contacts one end of the inner plastic tube, and an anti-slip band is connected inside the inner plastic tube.

[0011] Preferably, a rope sleeve is installed at one end of the nylon rope. The rope sleeve is installed inside the outer heat shrinkable tube, and the outer surface of the rope sleeve contacts the outer surface of the baffle.

[0012] Preferably, the outer surface of the rope sleeve contacts the outer surface of the first support plate and the outer surface of the second support plate, and ventilation holes are formed inside the bracket.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] In the utility model, through the cooperation between components such as the bracket and the nylon rope, firstly, the bracket can support the sleeve. Through the support of the bracket for the sleeve, the port of the sleeve will not be deformed due to extrusion, and at the same time, it also enables the user to hold the place supported by the bracket, facilitating the user to insert the connector into it. The nylon rope can increase the tensile strength of the outer heat shrinkable tube. When the outer shrinkable tube is pulled outwards, it will drive the nylon rope to extend towards both ends, so that the nylon rope bears the pulling force of the user on the outer heat shrinkable tube, making the outer heat shrinkable tube not easily broken, thereby increasing the service life of the outer shrinkable tube, which is very convenient and solves the problem that it is inconvenient to use due to the deformation of the port and the connector cannot be inserted into the heat shrinkable tube.

[0015] In the utility model, through the cooperation between the limiting mechanism and components such as the baffle, the limiting mechanism can connect the two ends of the bracket, making the bracket circular when it is inside the outer heat shrinkable tube. After inserting the connector into the heat shrinkable tube and pulling out the bracket from the outer heat shrinkable tube, when the limiting mechanism is opened, the bracket can be taken off from the wire harness connector. The baffle can facilitate the removal of the bracket from the outer heat shrinkable tube. The baffle, the first support plate and the second support plate provide places for the user to start, enabling the user to pull out the bracket from the outer heat shrinkable tube through these places, which is very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the overall structural schematic diagram of a double-layer heat shrinkable tube for an automotive wire harness connector of the present utility model;

[0017] Figure 2 is the overall sectional schematic diagram of a double-layer heat shrinkable tube for an automotive wire harness connector of the present utility model;

[0018] Figure 3Schematic diagram of the limiting mechanism of a double-layer heat-shrinkable tube for an automotive wire harness connector of the present utility model;

[0019] Figure 4 Schematic cross-sectional view of the outer heat-shrinkable tube of a double-layer heat-shrinkable tube for an automotive wire harness connector of the present utility model;

[0020] Figure 5 Right view of the overall structure of a double-layer heat-shrinkable tube for an automotive wire harness connector of the present utility model.

[0021] In the figure: 1. Outer heat-shrinkable tube; 2. Bracket; 3. Disconnection port; 4. First support plate; 5. Cross bar; 6. Limiting mechanism; 601. Sleeve; 602. Partition board; 603. Limiting plate; 7. Second support plate; 8. Chute; 9. Baffle; 10. Nylon rope; 11. Inner plastic tube; 12. Anti-slip band; 13. Rope sleeve; 14. Vent hole. Detailed implementation manners

[0022] To make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation manners.

[0023] As Figures 1-5 shown, a double-layer heat-shrinkable tube for an automotive wire harness connector includes an outer heat-shrinkable tube 1. A bracket 2 is slidably connected inside the outer heat-shrinkable tube 1. A disconnection port 3 is opened inside the bracket 2. The bracket 2 has a certain elasticity. By disconnecting the bracket 2 through the disconnection port 3, when there is no external force restricting the bracket 2, the bracket 2 will be in a nearly horizontal state. By forming the bracket 2 into a quasi-circular shape and inserting it into the port of the outer heat-shrinkable tube 1, the port of the outer heat-shrinkable tube 1 is expanded, so that it will not deform due to a little external force. At the same time, due to the force of the bracket 2 wanting to expand outwards, the bracket 2 is clamped inside the outer heat-shrinkable tube 1 and will not easily slide out of the outer heat-shrinkable tube 1.

[0024] The upper surface of the bracket 2 is connected with a first support plate 4, and a cross bar 5 is connected inside the first support plate 4. The bracket 2 fixes the position of the first support plate 4, making the first support plate 4 immovable. The first support plate 4 fixes the position of the cross bar 5, making the cross bar 5 immovable.

[0025] A limiting mechanism 6 is arranged above the bracket 2. The upper surface of the bracket 2 is connected with a second support plate 7, and a chute 8 is opened inside the second support plate 7. The bracket 2 fixes the position of the second support plate 7, making the second support plate 7 immovable. There is a gap between the first support plate 4, the second support plate 7 and the outer heat-shrinkable tube 1, allowing the user to exert force to move the bracket 2 when pinching the first support plate 4 and the second support plate 7. The inner side wall of the chute 8 is relatively smooth, and the friction force on other objects moving on the inner side wall of the chute 8 is small.

[0026] A baffle 9 is connected to the bottom surface of the bracket 2. A nylon rope 10 is installed inside the outer heat shrinkable tube 1, and an inner plastic tube 11 is installed inside the outer heat shrinkable tube 1. The bracket 2 will fix the position of the baffle 9. There is also a gap between the baffle 9 and the outer heat shrinkable tube 1. Under the action of the support plate 1 4, the support plate 2 7 and the baffle 9, the user can more easily pull out the bracket 2 from the outer heat shrinkable tube 1. The nylon rope 10 is used to increase the tensile strength of the outer heat shrinkable tube 1, and the outer heat shrinkable tube 1 will fix the position of the inner plastic tube 11.

[0027] The limiting mechanism 6 includes a sleeve 601. The inside of the sleeve 601 is rotatably connected to the outer surface of the cross bar 5. The outer surface of the sleeve 601 is slidably connected to the inside of the support plate 1 4. The sleeve 601 can take the cross bar 5 as an axis, and the support plate 1 4 will limit the position where the sleeve 601 can move, thereby preventing the sleeve 601 from moving horizontally.

[0028] A partition plate 602 is connected to the outer surface of the sleeve 601. The outer surface of the partition plate 602 is slidably connected to the inside of the support plate 1 4, and the outer surface of the partition plate 602 is slidably connected to the inner side wall of the chute 8. The sleeve 601 will fix the position of the partition plate 602. When the sleeve 601 moves, it will drive the partition plate 602 to move. The support plate 1 4 will limit the position of the partition plate 602, making the partition plate 602 unable to move horizontally. The partition plate 602 will be inserted into the chute 8, and the inner side wall of the chute 8 will limit the position where the partition plate 602 can move.

[0029] One end of the partition plate 602 is connected to a limit plate 603. The outer surface of the limit plate 603 is slidably connected to the inner side wall of the chute 8. The partition plate 602 will fix the position of the limit plate 603. When the partition plate 602 moves, it will drive the limit plate 603 to move. By placing the limit plate 603 into the inside of the chute 8, the position of the support plate 2 7 is limited, thereby connecting the two ends of the bracket 2, and thus absorbing a part of the force that the bracket 2 expands outwards.

[0030] The outer surface of the bracket 2 is in contact with one end of the inner plastic tube 11. An anti-slip band 12 is connected inside the inner plastic tube 11. The position of the inner plastic tube 11 is limited by the brackets 2 at both ends. The inner plastic tube 11 will fix the position of the anti-slip band 12. The anti-slip band 12 is used to increase the friction when contacting the wire harness connector, so that the wire harness connector is not easily pulled out of the heat shrinkable tube.

[0031] A rope sleeve 13 is installed at one end of the nylon rope 10. The rope sleeve 13 is installed inside the outer heat shrinkable tube 1. The outer surface of the rope sleeve 13 is in contact with the outer surface of the baffle 9. The rope sleeve 13 will limit the position of the nylon rope 10. When the two ends of the outer heat shrinkable tube 1 move outwards, it will drive the rope sleeve 13 to move outwards. When the rope sleeve 13 moves outwards, it will pull the nylon rope 10, thereby increasing the tensile strength of the rope sleeve 13.

[0032] The outer surface of the noose 13 contacts with the outer surface of the first support plate 4, and the outer surface of the noose 13 contacts with the outer surface of the second support plate 7. An air vent 14 is provided inside the bracket 2, and the air vent 14 is used to reduce the material used for manufacturing the bracket 2, thereby saving costs.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-layer heat-shrinkable tube for an automotive wiring harness connector, characterized in that: It includes an outer heat-shrinkable tube (1), a bracket (2) is slidably connected inside the outer heat-shrinkable tube (1), a break interface (3) is provided inside the bracket (2), a first support plate (4) is connected to the upper surface of the bracket (2), a cross bar (5) is connected inside the first support plate (4), a limiting mechanism (6) is arranged above the bracket (2), a second support plate (7) is connected to the upper surface of the bracket (2), a chute (8) is provided inside the second support plate (7), a baffle (9) is connected to the bottom surface of the bracket (2), a nylon rope (10) is installed inside the outer heat-shrinkable tube (1), and an inner plastic tube (11) is installed inside the outer heat-shrinkable tube (1).

2. The double-layer heat-shrinkable tube for an automotive wiring harness connector according to claim 1, wherein: The limiting mechanism (6) includes a sleeve (601), the inside of the sleeve (601) is rotatably connected to the outer surface of the cross bar (5), and the outer surface of the sleeve (601) is slidably connected to the inside of the first support plate (4).

3. The double-layer heat-shrinkable tube for an automotive wiring harness connector according to claim 2, wherein: A partition board (602) is connected to the outer surface of the sleeve (601), the outer surface of the partition board (602) is slidably connected to the inside of the first support plate (4), and the outer surface of the partition board (602) is slidably connected to the inner side wall of the chute (8).

4. The double-layer heat-shrinkable tube for an automotive wire harness connector according to claim 3, wherein: A limiting plate (603) is connected to one end of the partition board (602), and the outer surface of the limiting plate (603) is slidably connected to the inner side wall of the chute (8).

5. The double-layer heat-shrinkable tube for an automotive wire harness connector according to claim 1, wherein: The outer surface of the bracket (2) is in contact with one end of the inner plastic tube (11), and an anti-slip belt (12) is connected inside the inner plastic tube (11).

6. The double-layer heat-shrinkable tube for an automotive wire harness connector according to claim 1, wherein: A rope sleeve (13) is installed at one end of the nylon rope (10), the rope sleeve (13) is installed inside the outer heat-shrinkable tube (1), and the outer surface of the rope sleeve (13) is in contact with the outer surface of the baffle (9).

7. A double-layer heat-shrinkable tube for an automotive wiring harness connector according to claim 6, wherein: The outer surface of the rope sleeve (13) is in contact with the outer surface of the first support plate (4), the outer surface of the rope sleeve (13) is in contact with the outer surface of the second support plate (7), and a ventilation hole (14) is provided inside the bracket (2).

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