Oil temperature sensor switching wire harness
By using innovative designs such as corrugated tubing, heat shrink tubing, inner retaining rings, and copper washers in the oil temperature sensor adapter wiring harness, the problems of waterproofing and convenient maintenance of the wiring harness in humid and highly corrosive environments have been solved, achieving high reliability and convenient maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN QINGTUO HEAVY IND CO LTD
- Filing Date
- 2025-04-30
- Publication Date
- 2026-04-28
AI Technical Summary
In the humid and highly corrosive environment of mining tunnels, the oil temperature sensor adapter harness needs to have both high reliability and easy maintenance. Existing technologies are difficult to meet the requirements of waterproof performance and convenient maintenance.
The harness is designed to be detachable by using components such as corrugated tubing, heat shrink tubing, inner retaining rings, and copper washers, through threaded connections and heat shrink technology. Combined with anti-oxidation coatings and anti-corrosion nano-coatings, it enhances waterproofness and insulation, and facilitates maintenance.
The oil temperature sensor adapter harness has strong waterproof performance, convenient maintenance, ensures stable transmission of oil temperature data, facilitates the replacement of insulating tape, and improves the weather resistance and reliability of the harness.
Smart Images

Figure CN224177632U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wire harness technology, and in particular to an oil temperature sensor adapter wire harness. Background Technology
[0002] Mining trucks operate for extended periods in humid and highly corrosive mine environments, placing stringent demands on the weather resistance of low-voltage components. The oil temperature sensor adapter harness, as a key component connecting the sensor to the vehicle control system, must possess both high reliability and ease of maintenance: ensuring stable transmission of oil temperature data while also enabling rapid inspection and replacement of insulating tape. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide an oil temperature sensor adapter harness that is waterproof and easy to maintain.
[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: to provide an oil temperature sensor adapter harness, including: harness connector, heat shrink tubing, inner retaining ring and corrugated tube;
[0005] The wiring harness connector and the oil temperature sensor are connected via a wiring harness. The corrugated tube is sleeved on the wiring harness. An inner retaining ring is provided on the inner side of one end of the corrugated tube connecting to the wiring harness connector. The surface of the inner retaining ring is threaded. The heat shrink tubing is heated and shrunk to wrap around the surface of the inner retaining ring and around the connection between the wiring harness and the wiring harness connector. The connection is sealed with kraft glue.
[0006] Furthermore, in the aforementioned oil temperature sensor adapter harness, the bellows is connected to the oil temperature sensor via a nut, and a copper washer is provided between the nut and the oil temperature sensor.
[0007] Furthermore, in the aforementioned oil temperature sensor adapter harness, the surface of the copper washer is plated with an anti-oxidation coating.
[0008] Furthermore, in the aforementioned oil temperature sensor adapter harness, the connection point between the connecting harness and the harness connector is also wrapped with PVC insulating tape.
[0009] Furthermore, in the aforementioned oil temperature sensor adapter harness, the diameter of the heat shrink tubing is smaller than the diameter of the bellows.
[0010] Furthermore, in the aforementioned oil temperature sensor adapter harness, the outer wall of the bellows is provided with an anti-electromagnetic interference metal braided layer.
[0011] Furthermore, in the aforementioned oil temperature sensor adapter harness, the inner retaining ring and the bellows are integrally formed, with a thread pitch of 0.5-1.2mm and a thread depth of 0.3-0.8mm.
[0012] Furthermore, in the aforementioned oil temperature sensor adapter harness, the inner retaining ring is integrally formed with the bellows, and its thread pitch is 1mm and thread depth is 0.5mm.
[0013] Furthermore, in the aforementioned oil temperature sensor adapter harness, the inner wall of the heat shrink tubing is pre-coated with an epoxy resin layer, which, after being heated and shrunk, forms a chemical bond and seal with the connecting harness.
[0014] Furthermore, in the aforementioned oil temperature sensor adapter harness, the outer surface of the bellows is provided with an anti-corrosion nano-coating.
[0015] The beneficial effects of this utility model are as follows: The oil temperature sensor adapter harness of this utility model, through the setting of corrugated tube, heat shrink tubing, inner retaining ring, and adhesive application to the end of the connecting harness, by rotating the heat shrink tubing corresponding to the internal thread between the corrugated tube and the inner retaining ring, and then by heating and shrinking the heat shrink tubing, the inner wall of the heat shrink tubing is heat-shrinked and wrapped around the connection. When the harness needs to be repaired, the corrugated tube and heat shrink tubing can be separated by rotating, which is conducive to quickly exposing the wiring terminals during harness repair and facilitating the replacement of the insulating tape of the harness. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of an oil temperature sensor adapter harness according to a specific embodiment of the present invention;
[0017] Label Explanation:
[0018] 1. Wire harness connector; 2. Heat shrink tubing; 3. Inner retaining ring; 4. Corrugated tubing; 5. Connecting wire harness; 6. Nut; 7. Oil temperature sensor. Detailed Implementation
[0019] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.
[0020] This utility model provides an oil temperature sensor adapter harness, including: a harness connector, a heat shrink tubing, an inner retaining ring, and a corrugated tube;
[0021] The wiring harness connector and the oil temperature sensor are connected via a wiring harness. The corrugated tube is sleeved on the wiring harness. An inner retaining ring is provided on the inner side of one end of the corrugated tube connecting to the wiring harness connector. The surface of the inner retaining ring is threaded. The heat shrink tubing is heated and shrunk to wrap around the surface of the inner retaining ring and around the connection between the wiring harness and the wiring harness connector. The connection is sealed with kraft glue.
[0022] The beneficial effects of this utility model are as follows:
[0023] 1) The oil temperature sensor adapter harness of this utility model, through the setting of corrugated tube, heat shrink tube, inner retaining ring, and glue application to the end of the connecting harness, by rotating the heat shrink tube corresponding to the internal thread between the corrugated tube and the inner retaining ring, and then by heating and shrinking the heat shrink tube, the inner wall of the heat shrink tube is heat-shrinked and wrapped around the connection. When the harness needs to be repaired, the corrugated tube and heat shrink tube can be separated by rotating, which is conducive to quickly exposing the terminal during the harness repair and facilitating the replacement of the insulating tape of the harness.
[0024] 2) The waterproof adapter harness with closed corrugated tube of this utility model, through the setting of corrugated tube, heat shrink tubing and Kevlar adhesive treatment, the corrugated tube can rotate synchronously with the line, and the heat shrink tubing completes the seal between the corrugated tube and the waterproof adapter harness, which helps to improve waterproof performance.
[0025] Furthermore, in the aforementioned oil temperature sensor adapter harness, the bellows is connected to the oil temperature sensor via a nut, and a copper washer is provided between the nut and the oil temperature sensor.
[0026] As described above, the sensor carries a copper pad to improve the thermal transfer of the thermistor and reduce the error in the received signal.
[0027] Furthermore, in the aforementioned oil temperature sensor adapter harness, the surface of the copper washer is plated with an anti-oxidation coating.
[0028] Furthermore, the connection points of the aforementioned oil temperature sensor adapter harness are also wrapped with PVC insulating tape.
[0029] As described above, wrapping with PVC insulating tape enhances insulation.
[0030] Furthermore, in the aforementioned oil temperature sensor adapter harness, the diameter of the heat shrink tubing is smaller than the diameter of the bellows.
[0031] As described above, the above setup allows the heat shrink tubing to wrap more tightly by heating and shrinking.
[0032] Furthermore, in the aforementioned oil temperature sensor adapter harness, the outer wall of the closed-end bellows is provided with an anti-electromagnetic interference metal braid layer.
[0033] Furthermore, in the aforementioned oil temperature sensor adapter harness, the inner retaining ring and the bellows are integrally formed, with a thread pitch of 0.5-1.2mm and a thread depth of 0.3-0.8mm.
[0034] Furthermore, in the aforementioned oil temperature sensor adapter harness, the inner retaining ring is integrally formed with the bellows, and its thread pitch is 1mm and thread depth is 0.5mm.
[0035] Furthermore, in the aforementioned oil temperature sensor adapter harness, the inner wall of the heat shrink tubing is pre-coated with an epoxy resin layer, which, after being heated and shrunk, forms a chemical bond and seal with the connecting harness.
[0036] Furthermore, in the aforementioned oil temperature sensor adapter harness, the closed-end bellows is made of polyamide composite material, and its outer surface is provided with an anti-corrosion nano-coating.
[0037] Example 1
[0038] Please refer to Figure 1 An oil temperature sensor 7 adapter harness includes: a harness connector 1, a heat shrink tubing 2, an inner retaining ring 3, and a corrugated tube 4;
[0039] The wiring harness connector 1 and the oil temperature sensor 7 are connected by the connecting wiring harness 5. The corrugated tube 4 is sleeved on the connecting wiring harness 5. The inner side of one end of the corrugated tube 4 connected to the wiring harness 5 connector 1 is provided with an inner retaining ring 3. The surface of the inner retaining ring 3 is provided with threads. The heat shrink tubing 2 is heated and shrunk to wrap around the surface of the inner retaining ring 3 and around the connection between the connecting wiring harness 5 and the wiring harness connector 1. The connection is sealed with kraft glue.
[0040] The bellows 4 is connected to the oil temperature sensor 7 via a nut 6, and a copper washer is provided between the nut 6 and the oil temperature sensor 7. The surface of the copper washer is plated with an anti-oxidation coating.
[0041] The connection between the connecting wire harness 5 and the wire harness connector 1 is also wrapped with PVC insulating tape. The diameter of the heat shrink tubing 2 is smaller than the diameter of the corrugated tube 4. The inner retaining ring 3 is integrally formed with the corrugated tube 4, and its thread pitch is 1mm and the thread depth is 0.5mm.
[0042] The working principle of the oil temperature sensor 7 adapter harness of this utility model is as follows: one end of the connecting harness 5 passes through the corrugated tube 4, heat shrink tubing 2, and inner retaining ring 3 and connects to the harness connector 1; the other end is connected to the oil temperature sensor 7 through a nut 6. A copper washer is provided between the nut 6 and the oil temperature sensor 7. The tail of the connecting harness 5 is coated with Kafter adhesive to improve waterproofing.
[0043] The connecting harness 5 can be bent at an angle according to the actual situation along with the corrugated tube 4. The heat shrink tubing 2 wraps around the surface of the inner retaining ring 3 and around the connection between the connecting harness 5 and the harness connector 1. Then, the heat shrink tubing 2 is heated and shrunk so that the inner wall of the heat shrink tubing 2 wraps around the connecting corrugated tube 4. The connection is sealed with Kaft glue.
[0044] When the wiring harness needs to be inspected, the corrugated tube 4 and heat shrink tubing 2 can be rotated to separate them, quickly exposing the terminals and facilitating the replacement of the PVC insulation tape on the wiring harness.
[0045] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. An oil temperature sensor adapter harness, characterized in that, include: Wire harness connectors, heat shrink tubing, inner retaining rings, and corrugated tubing; The wiring harness connector and the oil temperature sensor are connected via a wiring harness. The corrugated tube is sleeved on the wiring harness. An inner retaining ring is provided on the inner side of one end of the corrugated tube connecting to the wiring harness connector. The surface of the inner retaining ring is threaded. The heat shrink tubing is heated and shrunk to wrap around the surface of the inner retaining ring and around the connection between the wiring harness and the wiring harness connector. The connection is sealed with kraft glue.
2. The oil temperature sensor adapter harness according to claim 1, characterized in that, The bellows is connected to the oil temperature sensor via a nut, and a copper washer is provided between the nut and the oil temperature sensor.
3. The oil temperature sensor adapter harness according to claim 2, characterized in that, The surface of the copper washer is plated with an anti-oxidation coating.
4. The oil temperature sensor adapter harness according to claim 1, characterized in that, The connection between the connecting wire harness and the wire harness connector is also wrapped with PVC insulating tape.
5. The oil temperature sensor adapter harness according to claim 1, characterized in that, The diameter of the heat shrink tubing is smaller than the diameter of the corrugated tubing.
6. The oil temperature sensor adapter harness according to claim 1, characterized in that, The outer wall of the corrugated pipe is provided with an anti-electromagnetic interference metal braided layer.
7. The oil temperature sensor adapter harness according to claim 1, characterized in that, The inner retaining ring is integrally formed with the bellows, and its thread pitch is 0.5-1.2mm and its thread depth is 0.3-0.8mm.
8. The oil temperature sensor adapter harness according to claim 7, characterized in that, The inner retaining ring is integrally formed with the bellows, and its thread pitch is 1mm and thread depth is 0.5mm.
9. The oil temperature sensor adapter harness according to claim 1, characterized in that, The inner wall of the heat shrink tubing is pre-coated with an epoxy resin layer, which forms a chemical bond and seal with the connecting wire harness after heating and shrinking.
10. The oil temperature sensor adapter harness according to claim 1, characterized in that, The outer surface of the corrugated pipe is coated with an anti-corrosion nano-coating.