Self-sealing water temperature sensor

Abstract

A self-sealing water temperature sensor comprises a water temperature sensor wire harness and an inductive probe, the outer surface of the water temperature sensor wire harness is sleeved with a sealing piece, the outer surface of the sealing piece is wrapped with a sleeve core, a shell is arranged outside the sleeve core, and a plurality of open grooves are evenly formed in the surface of the shell in the axial direction; the lower section part of the shell is a guide section, the guide section is of a big-end-up inverted-truncated-cone-shaped structure, the upper section part of the shell is an interference section, the outer surface of the interference section is in threaded connection with the Boss column through external threads, the outer diameter of the interference section is larger than the inner diameter of the Boss column, and the outer diameter of the guide section is smaller than the inner diameter of the Boss column. According to the utility model, the defects in the prior art are overcome, the water temperature can be directly measured under the condition of a smaller volume, and the effective sealing effect is realized, so that the temperature measurement precision is improved.

Description

Technical Field

[0001] The utility model relates to the field of physics, in particular to a temperature measurement technology, in particular to a self-sealing water temperature sensor. Background Art

[0002] With the continuous iterative development of new energy vehicle technology, people's requirements for vehicle performance are increasing. As one of the core parts of the vehicle, the electric drive system will be mainly developed in terms of high power, high integration and low loss. However, the resulting thermal safety issues are increasingly receiving widespread attention in the electric drive system manufacturing field.

[0003] When working, the electric drive system with high power density is prone to high voltage, high current and electromagnetic interference. At the same time, the internal components have high heat flow, which causes the temperature of the electric drive system to rise. In severe cases, it will overheat and be damaged. In order to avoid failure of the electric drive system during operation, most high-power electric drive systems will use liquid cooling to cool it down. In this process, the temperature of the coolant will have a great impact on the heat dissipation effect. Therefore, accurately obtaining the coolant temperature can realize real-time temperature monitoring of the electric drive system while ensuring effective cooling.

[0004] In the prior art, in order to prevent leakage from damaging insulation, the temperature of the shell is mostly measured near the waterway. Although this method can achieve temperature monitoring, the air temperature in the equipment, the radiation heat dissipation of components, and the heat transfer of the metal shell will affect the measurement accuracy. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a self-sealing water temperature sensor, which can directly measure the water temperature in a relatively small volume and achieve an effective sealing effect to improve the temperature measurement accuracy.

[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A self-sealing water temperature sensor, comprising a water temperature sensor harness and a sensing probe arranged at the end of the water temperature sensor harness, wherein a sealing member is sleeved on the outer surface of the water temperature sensor harness, a sleeve core is covered on the outer surface of the sealing member, an outer shell is arranged outside the sleeve core, and at least two axially extending opening grooves are evenly opened on the surface of the outer shell along the circumferential direction;

[0008] The upper section of the shell is an interference section, which is movably connected in a Boss column. The lower section of the shell is a guide section, which is an inverted truncated cone structure with a larger upper part and a smaller lower part. The outer diameter of the interference section is larger than the inner diameter of the Boss column, and the outer diameter of the guide section is smaller than the inner diameter of the Boss column. The sensing probe extends into the target waterway.

[0009] Preferably, a flange is provided at the root of the Boss column.

[0010] Preferably, the material hardness of the sleeve core is greater than the material hardness of the sealing element.

[0011] Preferably, the core is made of nylon.

[0012] Preferably, the sealing element is made of rubber.

[0013] Preferably, the outer surface of the interference section is threadably connected to the Boss column via an external thread.

[0014] Preferably, the core sleeve comprises an upper core sleeve and a lower core sleeve, the upper core sleeve and the lower core sleeve are an integrated structure, the upper core sleeve is sleeved on the outer surface of the water temperature sensor harness, and the lower core sleeve is sleeved on the outer surface of the seal.

[0015] Preferably, the wall thickness of the upper core is 0.5 mm-2 mm, and the wall thickness of the lower core is 0.5 mm-1 mm.

[0016] Preferably, the inner diameter of the seal is 0.05 mm-0.15 mm larger than the outer diameter of the water temperature sensor harness, and the wall thickness of the seal is 0.3 mm-1.5 mm.

[0017] Preferably, the inner diameter of the interference section is 1 mm-2 mm larger than the outer diameter of the water temperature sensor harness.

[0018] The utility model provides a self-sealing water temperature sensor. It has the following beneficial effects: the entire water temperature sensor harness is driven to move toward the inner cavity of the Boss column through the outer shell, and because the outer diameter of the interference section is larger than the inner diameter of the Boss column, the interference section of the outer shell is subjected to interference force during the movement, so that each opening groove is gradually reduced, and then the outer shell is reduced inward, thereby continuously compressing the sleeve core and the seal, so that the seal and the water temperature sensor harness are tightly fitted, and finally the sensing probe reaches the target waterway while also having a good sealing effect. Therefore, the purpose of directly measuring water temperature can be achieved in the electronic control under high power density. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings required for describing the prior art are briefly introduced below.

[0020] Figure 1 A schematic diagram of the structure of the utility model;

[0021] Figure 2 A schematic diagram of the cross-sectional structure of the utility model;

[0022] Figure 3A schematic diagram of the structure of the utility model when connected with a Boss column;

[0023] Figure 4 A schematic diagram of the cross-sectional structure of the utility model when connected to a Boss column;

[0024] Description of the numbers in the figure:

[0025] 1. Water temperature sensor wiring harness; 2. Sensing probe; 3. Seal; 4. Core sleeve; 41. Upper core sleeve; 42. Lower core sleeve; 5. Housing; 51. Interference section; 52. Guide section; 6. External thread; 7. Boss column; 8. External thread; 9. Target waterway. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention.

[0027] Embodiment 1, as Figures 1 to 4 As shown, a self-sealing water temperature sensor comprises a water temperature sensor harness 1 and a sensing probe 2 arranged at the end of the water temperature sensor harness 1, a sealing member 3 is sleeved on the outer surface of the water temperature sensor harness 1, a sleeve core 4 is covered on the outer surface of the sealing member 3, a shell 5 is arranged outside the sleeve core 4, and at least two axially extending opening grooves 6 are evenly opened on the surface of the shell 5 along the circumferential direction;

[0028] The upper section of the housing 5 is an interference section 51, the outer surface of the interference section 51 is threadedly connected to a Boss column 7 through an external thread 8, the lower section of the housing 5 is a guide section 52, the guide section 52 is an inverted truncated cone structure with a larger upper portion and a smaller lower portion, the outer diameter of the interference section 51 is larger than the inner diameter of the Boss column 7, the outer diameter of the guide section 52 is smaller than the inner diameter of the Boss column 7, and the sensing probe 2 extends into the target waterway 9. In this embodiment, the Boss column 7 is a screw column used for fixing the guide.

[0029] Furthermore, a flange is provided at the root of the Boss column 7 for connecting to the inner wall of the target waterway 9 .

[0030] The material hardness of the sleeve core 4 is greater than the material hardness of the sealing member 3. In this embodiment, the sleeve core 4 is preferably made of nylon material, and the sealing member 3 is preferably made of rubber material.

[0031] Specifically, the water temperature sensor harness 1 and the sensing probe 2 described in this embodiment both adopt well-known technical solutions in the prior art, which will not be described in detail here.

[0032] Working principle:

[0033] The Boss column 7 is installed on the side wall of the target water channel 9, and the Boss column 7 extends to the outside of the target water channel 9. The seal 3 is wrapped around the water temperature sensor harness 1, and then wrapped around the outside of the seal 3 again through the sleeve core 4, and then the entire water temperature sensor harness 1, the seal 3 and the sleeve core 4 are integrally embedded in the hollow cavity of the shell 5; the Boss column 7 is installed by the external thread 8 on the outer surface of the shell 5, and the entire water temperature sensor harness 1 is driven to move toward the inner cavity of the Boss column 7 through the shell 5. Since the outer diameter of the interference section 51 is larger than the inner diameter of the Boss column 7, the interference section 51 of the shell 5 is subjected to the interference force during the movement, so that each opening groove 6 is gradually reduced, and then the shell 5 is reduced inward, thereby continuously compressing the sleeve core 4 and the seal 3, so that the seal 3 and the water temperature sensor harness 1 are tightly fitted, and finally the sensing probe 2 reaches the target water channel and also has a good sealing effect. Therefore, the purpose of directly measuring water temperature can be achieved in the electronic control under high power density.

[0034] Embodiment 2, as a further preferred solution of embodiment 1, the sleeve core 4 includes an upper sleeve core 41 and a lower sleeve core 42, the upper sleeve core 41 and the lower sleeve core 42 are an integrated structure, the upper sleeve core 41 is sleeved on the outer surface of the water temperature sensor harness 1, and the lower sleeve core 42 is sleeved on the outer surface of the seal 3. By dividing the sleeve core 4 into two parts, the upper sleeve core 41 and the lower sleeve core 42, the sleeve core 4 can be used to further limit the fixing and covering protection between the seal 3 and the water temperature sensor harness 1.

[0035] Embodiment 3, as a further preferred embodiment of embodiment 2, the wall thickness of the upper sleeve core 41 is 0.5mm-2mm, and the wall thickness of the lower sleeve core 42 is 0.5mm-1mm. The inner diameter of the seal 3 is 0.05mm-0.15mm larger than the outer diameter of the water temperature sensor harness 1, and the wall thickness of the seal 3 is 0.3mm-1.5mm. The inner diameter of the interference section 51 is 1mm-2mm larger than the outer diameter of the water temperature sensor harness 1.

[0036] Thereby, it is ensured that the entire water temperature sensor harness 1, the seal 3 and the core sleeve 4 can be integrally embedded in the hollow cavity of the outer shell 5, and at the same time, through the cooperation between the outer shell 5 and the Boss column 7, the outer shell 5 can be tightly pressed against the outer surface of the core sleeve 4 when it shrinks inward, thereby effectively ensuring the sealing and fitting effect between the seal 3 and the water temperature sensor harness 1.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A self-sealing water temperature sensor, comprising a water temperature sensor harness (1) and a sensing probe (2) arranged at the end of the water temperature sensor harness (1), Features: The outer surface of the water temperature sensor harness (1) is sleeved with a seal (3), the outer surface of the seal (3) is covered with a sleeve core (4), the outer surface of the sleeve core (4) is provided with a shell (5), and the surface of the shell (5) is evenly provided with at least two axially extending open grooves (6) along the circumferential direction; The upper section of the shell (5) is an interference section (51), and the interference section (51) is movably connected in a Boss column (7). The lower section of the shell (5) is a guide section (52), and the guide section (52) is an inverted truncated cone structure with a larger upper part and a smaller lower part. The outer diameter of the interference section (51) is larger than the inner diameter of the Boss column (7), and the outer diameter of the guide section (52) is smaller than the inner diameter of the Boss column (7). The sensing probe (2) extends into the target waterway (9).

2. A self-sealing water temperature sensor according to claim 1, Features: The material hardness of the sleeve core (4) is greater than the material hardness of the sealing element (3).

3. A self-sealing water temperature sensor according to claim 1, Features: The sleeve core (4) is made of nylon.

4. A self-sealing water temperature sensor according to claim 1, Features: The sealing element (3) is made of rubber material.

5. A self-sealing water temperature sensor according to claim 1, Features: The outer surface of the interference section (51) is threadedly connected to the Boss column (7) via an external thread (8).

6. A self-sealing water temperature sensor according to claim 1, Features: The sleeve core (4) comprises an upper sleeve core (41) and a lower sleeve core (42), wherein the upper sleeve core (41) and the lower sleeve core (42) are an integrated structure, wherein the upper sleeve core (41) is sleeved on the outer surface of the water temperature sensor harness (1), and the lower sleeve core (42) is sleeved on the outer surface of the sealing element (3).

7. A self-sealing water temperature sensor according to claim 6, Features: The wall thickness of the upper core (41) is 0.5 mm to 2 mm, and the wall thickness of the lower core (42) is 0.5 mm to 1 mm.

8. A self-sealing water temperature sensor according to claim 1, Features: The inner diameter of the sealing member (3) is 0.05 mm to 0.15 mm greater than the outer diameter of the water temperature sensor harness (1), and the wall thickness of the sealing member (3) is 0.3 mm to 1.5 mm.

9. A self-sealing water temperature sensor according to claim 1, Features: The inner diameter of the interference section (51) is 1 mm to 2 mm larger than the outer diameter of the water temperature sensor harness (1).

10. A self-sealing water temperature sensor according to claim 1, Features: A flange is provided at the root of the boss column (7).

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