Oil seepage prevention sensor
By employing structures such as metal sleeves, rubber sealing rings, annular rubber air bladders, and sealing fillers in the sensor, the problem of oil leakage at the sensor connection point is solved, achieving higher sealing performance and wear resistance, and protecting the temperature sensing element.
Patent Information
- Application Number
- CN202520228172.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-02-13
AI Technical Summary
Gaps can easily form at the connection between the sensor housing and the cable, allowing liquid oil to seep into the sensor and damage the temperature sensing element.
The initial sealing is achieved using a metal sleeve, an upper rubber sealing ring, and a lower rubber sealing ring. The second sealing step is achieved by inflating an annular rubber sealing airbag. The third sealing step is achieved using sealing filler and sealing plugs. The combination of a rubber protective sleeve and an annular bending groove reduces the bending angle of the cable and improves the sealing performance.
It effectively prevents liquid oil from seeping into the sensor, avoids damage to the temperature sensing element, reduces the risk of cable wear, and improves the sensor's sealing and reliability.
Smart Images
Figure CN223870199U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to sensor technical field more particularly to a kind of anti-permeation oil sensors. BACKGROUND
[0002] Temperature sensor is the sensor that can feel temperature and convert into usable output signal, for measuring the temperature sensor of oil temperature is soaked in medium such as oil for a long time, based on thermoelectric effect or resistance change, when oil temperature changes, temperature measuring element of sensor is detected temperature, to reflect the actual temperature of oil product, but the connection between sensor shell and cable is once gap is produced when sensor is used, measured liquid oil is easy to penetrate from the connection between sensor shell and cable to the inside of sensor, causing the damage of temperature measuring element inside sensor, and there is room for improvement. UTILITY MODEL CONTENTS
[0003] In order to overcome the above-mentioned defects of the prior art, the utility model provides an anti-permeation oil sensor to solve the problems in the above background art.
[0004] The utility model provides the following technical scheme: an anti-permeation oil sensor, including temperature sensor shell, the inside of temperature sensor shell is equipped with cable and temperature measuring element, one end of cable is connected with temperature measuring element, the other end of cable extends the outside of temperature sensor shell, be equipped with metal cover between temperature sensor shell and cable, the inner wall of metal cover is sealed and is connected in the outer wall of temperature sensor shell and cable, the upper portion in the inside of metal cover is equipped with upper sealing groove, the upper sealing groove is located in the outside of cable, the lower portion in the inside of metal cover is equipped with lower sealing groove, the lower sealing groove is located above the outside of temperature sensor shell, the inside of upper sealing groove and lower sealing groove is equipped with annular rubber sealing air bag, one side of annular rubber sealing air bag is fixedly connected with inflator, the outer wall of inflator is fixedly connected on one side of metal cover, the outer wall of one end of inflator is screwed and is connected with sealing cap, the outer wall of cable is fixedly connected with rubber protective sleeve, the lower portion of the inner wall of rubber protective sleeve is fixedly connected above the outer wall of metal cover.
[0005] Further, a control valve is installed on the inflator, a rubber sealing gasket is fixedly connected to the inner wall of the sealing cap, and the rubber sealing gasket is arranged at one end of the inflator.
[0006] Further, an upper rubber sealing ring is sealingly inlaid above the inner wall of the metal cover, and the inner wall of the upper rubber sealing ring is sealingly connected to the outer wall of the cable.
[0007] Further, a lower rubber sealing ring is sealingly inlaid below the inner wall of the metal cover, and the inner wall of the lower rubber sealing ring is sealingly connected to the outer wall of the temperature sensor shell.
[0008] Further, the upper sealing sleeve inside the temperature sensor shell is connected with a sealing plug, the inside of the sealing plug is connected with the outer wall of the cable, the inside of the temperature sensor shell is provided with a sealing filler, and the sealing filler is located above the sealing plug.
[0009] Further, the outer wall of the rubber protective sleeve is provided with a plurality of annular bending grooves.
[0010] The technical effects and advantages of the utility model are as follows:
[0011] 1. The utility model discloses a metal sleeve, upper rubber sealing ring and lower rubber sealing ring are arranged, and the first step sealing protection between temperature sensor shell and cable is facilitated, and the annular rubber sealing air bag inside two sealing grooves is inflated and expands, and is wrapped outside cable and temperature sensor shell respectively, and the second step sealing is carried out, the sealing filler and the sealing plug are arranged, and the third step sealing between the inside of temperature sensor shell and cable is carried out, so that the sealing property between temperature sensor shell and cable is improved, liquid oil is prevented from penetrating to the inside of sensor, and the condition that the temperature measuring element in the inside of sensor is damaged is avoided.
[0012] 2. The utility model discloses a rubber protective sleeve and annular bending groove are arranged, and the bending angle of the place where cable and metal sleeve contact is reduced, the place where cable and metal sleeve contact is protected, and the condition that cable is abraded or the core and insulating layer in the inside of cable are damaged due to too large bending angle of cable is avoided. DRAWINGS
[0013] Figure 1 It is the whole structure schematic diagram of the utility model.
[0014] Figure 2 It is the enlarged schematic diagram of the structure of A of the utility model.
[0015] Figure 3 It is the structure overhead schematic diagram of annular rubber sealing air bag, inflation nozzle, control valve and sealing cap of the utility model.
[0016] Figure 4 It is the structure schematic diagram of rubber protective sleeve and annular bending groove of the utility model.
[0017] The drawing mark is: 1, temperature sensor shell, 2, cable, 3, temperature measuring element, 4, metal sleeve, 5, rubber protective sleeve, 51, annular bending groove, 6, upper rubber sealing ring, 7, lower rubber sealing ring, 8, sealing filler, 9, sealing plug, 10, upper sealing groove, 11, lower sealing groove, 12, annular rubber sealing air bag, 13, inflation nozzle, 14, control valve, 15, sealing cap, 16, rubber sealing gasket. Detailed Implementation
[0018] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The oil leakage sensor involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0019] Example 1:
[0020] like Figures 1-4 As shown, an oil-proof sensor includes a temperature sensor housing 1. Inside the temperature sensor housing 1, a cable 2 and a temperature sensing element 3 are disposed. One end of the cable 2 is connected to the temperature sensing element 3, and the other end of the cable 2 extends to the outside of the temperature sensor housing 1. A metal sleeve 4 is disposed between the temperature sensor housing 1 and the cable 2. The inner wall of the metal sleeve 4 is sealed against the outer wall of both the temperature sensor housing 1 and the cable 2. An upper sealing groove 10 is formed at the upper part of the inside of the metal sleeve 4, located outside the cable 2. A lower sealing groove 11 is formed at the lower part of the inside of the metal sleeve 4, located above the outside of the temperature sensor housing 1. The inner walls of the upper sealing groove 10 and the lower sealing groove 11 are sealed together. Each is equipped with an annular rubber sealing airbag 12. An inflation nozzle 13 is fixedly connected to one side of the annular rubber sealing airbag 12. The outer wall of the inflation nozzle 13 is fixedly connected to one side of the metal sleeve 4. A sealing cap 15 is threaded onto the outer wall of one end of the inflation nozzle 13. A control valve 14 is installed on the inflation nozzle 13. A rubber sealing gasket 16 is fixedly connected to the inner wall of the sealing cap 15. The rubber sealing gasket 16 is located at one end of the inflation nozzle 13. An upper rubber sealing ring 6 is sealed and embedded above the inner wall of the metal sleeve 4. The inner wall of the upper rubber sealing ring 6 is sealed and sleeved on the outer wall of the cable 2. A lower rubber sealing ring 7 is sealed and embedded below the inner wall of the metal sleeve 4. The inner wall of the lower rubber sealing ring 7 is sealed and sleeved on the outer wall of the temperature sensor housing 1.
[0021] In this embodiment, the metal sleeve 4, the upper rubber sealing ring 6, and the lower rubber sealing ring 7 can be glued to the outer walls of the temperature sensor housing 1 and the cable 2 to seal the temperature sensor housing 1 and the cable 2. An external inflation device is used to inflate the annular rubber sealing airbags 12 inside the upper sealing groove 10 and the lower sealing groove 11 through the inflation nozzle 13, and they are respectively wrapped around the outside of the cable 2 and the temperature sensor housing 1 to facilitate further sealing. By closing the control valve 14 and screwing the sealing cap 15 onto one end of the inflation nozzle 13, and using the rubber sealing gasket 16 to seal one end of the inflation nozzle 13, air leakage at one end of the inflation nozzle 13 can be prevented.
[0022] Example 2:
[0023] like Figures 1-4 As shown, a sealing plug 9 is sealed inside the upper part of the temperature sensor housing 1. The inner sealing plug 9 is sealed to the outer wall of the cable 2. A sealing filler 8 is provided inside the temperature sensor housing 1, and the sealing filler 8 is located above the sealing plug 9.
[0024] In this embodiment, the sealing filler 8 and the sealing plug 9 can seal and protect the upper part of the temperature sensor housing 1 from the cable 2, preventing oil from penetrating to the temperature sensing element 3. The sealing filler 8 can be made of sealing materials such as rubber, flexible graphite, or mud-like soft filler.
[0025] Example 3:
[0026] like Figures 1-4 As shown, a rubber protective sleeve 5 is fixedly sleeved on the outer wall of the cable 2, and the lower part of the inner wall of the rubber protective sleeve 5 is fixedly sleeved on the upper part of the outer wall of the metal sleeve 4. Multiple annular bending grooves 51 are opened on the outer wall of the rubber protective sleeve 5.
[0027] In this embodiment, by setting the rubber protective sleeve 5 and the annular bending groove 51, the bending angle at the contact point between the cable 2 and the metal sleeve 4 can be reduced, thereby increasing the bending resistance at the contact point between the cable 2 and the metal sleeve 4.
[0028] In summary, as Figures 1-4 As shown, this type of oil-proof sensor, in use, uses a metal sleeve 4, an upper rubber sealing ring 6, and a lower rubber sealing ring 7 to initially seal and protect the temperature sensor housing 1 and the cable 2. By removing the sealing cap 15 and opening the control valve 14, an external inflation device is used to inflate the annular rubber sealing airbags 12 inside the upper sealing groove 10 and the lower sealing groove 11, causing the annular rubber sealing airbags 12 inside the two sealing grooves to expand and wrap around the cable 2 and the temperature sensor housing 1 respectively, performing the second step of sealing. The sealing filler 8 and the sealing plug 9 are used to perform the third step of sealing between the temperature sensor housing 1 and the cable 2, thereby improving the sealing performance between the temperature sensor housing 1 and the cable 2 and preventing liquid oil from penetrating into the sensor.
[0029] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.
[0030] Secondly: the utility model discloses the embodiment in the drawing, only relate to the structure with the embodiment of the present disclosure, other structures can refer to the usual design, under the condition of not conflict, the same embodiment and different embodiments of the utility model can be combined with each other.
[0031] Finally: the above only for the preferred embodiment of the utility model has, and does not for limiting the utility model, any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model, should be contained in the protection scope of the utility model.
Claims
1. An oil-proof sensor, comprising a temperature sensor housing (1), characterized in that, The temperature sensor housing (1) is equipped with a cable (2) and a temperature sensing element (3) inside. One end of the cable (2) is connected to the temperature sensing element (3), and the other end of the cable (2) extends to the outside of the temperature sensor housing (1). A metal sleeve (4) is provided between the temperature sensor housing (1) and the cable (2). The inner wall of the metal sleeve (4) is sealed to the outer wall of the temperature sensor housing (1) and the cable (2). An upper sealing groove (10) is provided at the top inside the metal sleeve (4), and the upper sealing groove (10) is located outside the cable (2). A lower sealing groove is provided at the bottom inside the metal sleeve (4). The sealing groove (11) is located above the outside of the temperature sensor housing (1). The upper sealing groove (10) and the lower sealing groove (11) are both provided with annular rubber sealing airbags (12). An inflation nozzle (13) is fixedly connected to one side of the annular rubber sealing airbag (12). The outer wall of the inflation nozzle (13) is fixedly connected to one side of the metal sleeve (4). A sealing cap (15) is threaded onto the outer wall of one end of the inflation nozzle (13). A rubber protective sleeve (5) is fixedly sleeved onto the outer wall of the cable (2). The lower part of the inner wall of the rubber protective sleeve (5) is fixedly sleeved onto the upper part of the outer wall of the metal sleeve (4).
2. The oil-proof sensor according to claim 1, characterized in that: A control valve (14) is installed on the inflation nozzle (13), and a rubber sealing gasket (16) is fixedly connected to the inner wall of the sealing cap (15). The rubber sealing gasket (16) is located at one end of the inflation nozzle (13).
3. The oil-proof sensor according to claim 1, characterized in that: The upper rubber sealing ring (6) is sealed and embedded on the inner wall of the metal sleeve (4), and the inner wall of the upper rubber sealing ring (6) is sealed and fitted onto the outer wall of the cable (2).
4. The oil-proof sensor according to claim 1, characterized in that: The lower part of the inner wall of the metal sleeve (4) is sealed with a lower rubber sealing ring (7), and the inner wall of the lower rubber sealing ring (7) is sealed to the outer wall of the temperature sensor housing (1).
5. The oil-proof sensor according to claim 1, characterized in that: A sealing plug (9) is sealed inside the upper part of the temperature sensor housing (1). The sealing plug (9) is sealed inside the outer wall of the cable (2). A sealing filler (8) is provided inside the temperature sensor housing (1). The sealing filler (8) is located above the sealing plug (9).
6. The oil-proof sensor according to claim 1, characterized in that: The outer wall of the rubber protective sleeve (5) is provided with multiple annular bending grooves (51).