Temperature sensor using heat-conducting silicone grease

Abstract

The utility model provides a temperature sensor using heat-conducting silicone grease. The temperature sensor comprises a housing; the connector assembly comprises a plug and a connector assembly shell; one end of the electric insertion piece is fixed with the patch plug, and the other end of the electric insertion piece extends into the shell; the inner sealing ring is arranged in the shell; the outer sealing ring is arranged outside the shell; the thermosensitive element comprises a sensing element and a lead wire, the sensing element is arranged at the bottom end in the shell, one end of the lead wire is connected with the sensing element, and the other end of the lead wire is correspondingly connected with the electric insertion piece extending into the shell; and the sensing element is coated with heat-conducting silicone grease. According to the temperature sensor using the heat-conducting silicone grease provided by the utility model, the heat-conducting silicone grease is filled between the sensing element and the shell, so that heat transfer and stress buffering effects are achieved between the sensing element and the shell, the service life of a product can be prolonged, and the problem that the shell is separated from the heat-conducting silicone grease due to temperature impact aging is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a temperature sensor. Background Art

[0002] A temperature sensor is a sensor that senses temperature and converts it into an output signal. It typically consists of a sensing element and a connector. Existing temperature sensors have a sensing element encased in a sealing material, typically thermally conductive silicone, placed within a connector housing. Thermally conductive silicone is susceptible to aging due to varying coefficients of thermal expansion, which can lead to separation from the thermosensitive element and housing, affecting temperature measurement accuracy and shortening the lifespan of the temperature sensor. Utility Model Content

[0003] In order to solve some or all of the problems in the prior art, the present invention provides a temperature sensor using thermally conductive silicone grease, comprising:

[0004] shell;

[0005] A connector, comprising a connector plug and a connector housing;

[0006] an electrical plug, one end of which is fixed to the connector and the other end of which extends into the housing;

[0007] an inner sealing ring, the inner sealing ring being arranged in the housing to ensure that the connector is installed in the housing;

[0008] an outer sealing ring, arranged outside the housing to ensure that the connector is installed in the housing;

[0009] a thermal element, the thermal element comprising a sensing element and a lead, the sensing element being arranged at the bottom end of the housing, one end of the lead being connected to the sensing element, and the other end of the lead being connected to a corresponding electrical plug extending into the housing; and

[0010] Thermally conductive silicone grease fills the bottom end of the housing and covers the sensing element.

[0011] Furthermore, the shell is a stainless steel shell, an aluminum alloy shell, a magnesium alloy shell, or a titanium alloy shell.

[0012] Furthermore, the connector is a stainless steel connector, an aluminum alloy connector, a magnesium alloy connector, a titanium alloy connector, a rubber connector, a polypropylene connector, a polyethylene connector, or a polyvinyl chloride connector.

[0013] Furthermore, there are two or more electrical plugs.

[0014] Furthermore, the inner sealing ring is arranged at a corner inside the housing; and / or

[0015] The outer sealing ring is arranged at a corner outside the housing.

[0016] Furthermore, the inner sealing ring is a rubber sealing ring, a polypropylene sealing ring, a polyethylene sealing ring, or a polyvinyl chloride sealing ring; and / or

[0017] The outer sealing ring is a rubber sealing ring, a polypropylene sealing ring, a polyethylene sealing ring, or a polyvinyl chloride sealing ring.

[0018] Furthermore, the sensing element is a thermistor or a thermocouple.

[0019] Furthermore, there are 2 or more leads.

[0020] Furthermore, the sensing element is 1 mm to 5 mm away from the inner wall of the bottom end of the housing.

[0021] Furthermore, the top of the thermal grease is 1 mm to 10 mm higher than the top of the sensing element.

[0022] The technical solution of the utility model has the following beneficial effects:

[0023] 1. The temperature sensor using thermal grease provided by the utility model has thermal grease filled between the sensing element and the housing. The thermal grease plays a role in heat transfer and stress buffering between the sensing element and the housing, which can extend the service life of the product, balance the different thermal expansion coefficients of materials, and greatly improve the problem of separation of the housing and the thermal grease due to aging after temperature shock.

[0024] 2. The temperature sensor provided by the present invention uses thermally conductive silicone grease and has sealing rings arranged inside and outside the housing, which can more firmly install the connector in the housing, effectively preventing water vapor from the external environment from penetrating into the temperature sensor, and improving the waterproof performance of the temperature sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] To further illustrate the above and other advantages and features of various embodiments of the present invention, a more detailed description of various embodiments of the present invention will be presented with reference to the accompanying drawings. It will be understood that these drawings depict only typical embodiments of the present invention and are not to be considered as limiting the scope thereof. In the drawings, for clarity, identical or corresponding components will be indicated by the same or similar reference numerals. Furthermore, it will be understood that the various embodiments shown in the drawings are illustrative representations and are not necessarily drawn to scale.

[0026] Figure 1A schematic diagram of the overall structure of a temperature sensor using thermally conductive silicone grease according to an embodiment of the present invention is shown;

[0027] Figure 2 A cross-sectional view showing the internal structure of a temperature sensor using thermal grease according to an embodiment of the present invention; and

[0028] Figure 3 A schematic diagram of the bottom end of a housing of a temperature sensor using thermal grease according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0029] In the following description, the present invention is described with reference to various embodiments. However, those skilled in the art will recognize that the embodiments may be practiced without one or more of the specific details, or with alternative and / or additional methods or components. In other cases, well-known structures or operations are not shown or described in detail to avoid obscuring the practical aspects of the present invention. Similarly, specific numbers and configurations are set forth for illustrative purposes in order to provide a comprehensive understanding of the embodiments of the present invention. However, the present invention is not limited to these specific details.

[0030] In the present utility model, it should be noted that the terms "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present application.

[0031] It should also be noted that, in this utility model, unless otherwise expressly specified or limited, the terms "disposed," "configured," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0032] In this utility model, unless otherwise specified, the phrases "arranged on" or "arranged above" do not exclude the presence of an intermediate object between the two. Furthermore, "arranged on or above" merely indicates the relative positional relationship between two components. In certain circumstances, such as after reversing the product orientation, the phrase "arranged below or below" can also be translated as "arranged below" and vice versa.

[0033] In the present invention, reference to "one embodiment" or "the embodiment" means that a particular feature, structure, or characteristic described in conjunction with the embodiment is included in at least one embodiment of the present invention. The phrase "in one embodiment" appearing in various places in this specification does not necessarily refer to the same embodiment.

[0034] It should be noted that it should also be understood that in the embodiments of the present invention, the terms "comprise", "include", "have", "include" and / or "comprising", when used in this specification, indicate the existence of the stated features, elements and / or parts, but do not exclude the existence or addition of one or more other features, elements, parts and / or their combinations.

[0035] In the present invention, the quantifiers "plurality" and "multiple" refer to one or more elements.

[0036] The solution of the utility model is further described below in conjunction with the accompanying drawings of the embodiments.

[0037] Figure 1 The figure shows the overall structure of a temperature sensor using thermal conductive silicone grease according to an embodiment of the present invention. Figure 2 A cross-sectional view shows the internal structure of a temperature sensor using thermal grease according to one embodiment of the present invention. As shown, the temperature sensor comprises a connector 1, an electrical plug 3, an inner sealing ring 5, an outer sealing ring 6, a thermistor, thermal grease 10, and a housing 8. Connector 1 comprises a plug 2 and a connector housing 3. In one embodiment of the present invention, connector 1 can be integrally formed and can be made of stainless steel, aluminum alloy, magnesium alloy, titanium alloy, rubber, polypropylene, polyethylene, or polyvinyl chloride.

[0038] There are two electrical plugs 3, one end of which is fixed to the plug 2, and the other end of which extends into the housing 8. In one embodiment of the present invention, there can be multiple electrical plugs 3, that is, more than two.

[0039] The inner sealing ring 5 is arranged inside the housing 8, and the outer sealing ring 6 is arranged outside the housing 8. The inner sealing ring 5 and the outer sealing ring 6 can ensure that the connector 1 is installed inside the housing 8, forming a temperature sensor with a more stable structure. This is because the diameters of the inner sealing ring 5 and the outer sealing ring 6 are smaller than the width of the connector 1, so that the connector 1 cannot pass through the two sealing rings, thereby restricting the position of the connector 1 and preventing it from falling out of the housing. In one embodiment of the present invention, the inner sealing ring 5 is arranged at a corner inside the housing 8; and / or the outer sealing ring 6 is arranged at a corner outside the housing 8. In one embodiment of the present invention, the inner sealing ring 5 is a rubber sealing ring, a polypropylene sealing ring, a polyethylene sealing ring, or a polyvinyl chloride sealing ring; and / or the outer sealing ring 6 is a rubber sealing ring, a polypropylene sealing ring, a polyethylene sealing ring, or a polyvinyl chloride sealing ring.

[0040] The thermal element includes a sensing element 9 and leads 7. The sensing element 9 is arranged at the bottom end of the housing 8. There are two leads 7, one end of which is connected to the sensing element 9, and the other end of which is connected to the electrical plug 3 extending into the housing 8. To prevent the two leads 7 from touching each other and causing a short circuit, a plastic protective sheath can be placed over the leads. In one embodiment of the present invention, there can be multiple leads 7, i.e., more than two. In one embodiment of the present invention, the sensing element 9 is a thermistor or a thermocouple.

[0041] Figure 3 A schematic diagram of the bottom end of the housing of a temperature sensor using thermal grease according to one embodiment of the present invention is shown. As shown, thermal grease 10 fills the bottom end of the interior of housing 8 and covers sensing element 9, i.e., sensing element 9 is immersed in thermal grease 10. In one embodiment of the present invention, sensing element 9 is 1 mm to 5 mm from the inner wall of the bottom end of housing 8. In one embodiment of the present invention, the top of thermal grease 10 is 1 mm to 10 mm higher than the top of sensing element 9. In one embodiment of the present invention, housing 8 is made of stainless steel, aluminum alloy, magnesium alloy, or titanium alloy.

[0042] The thermal grease 10 can reduce the possibility of short circuit of the lead 7, so that the external required detection temperature can be transmitted to the sensor element 9 more quickly through the shell 8 and the thermal grease 10, making the temperature data information on the surface of the shell 8 more accurate.

[0043] The temperature sensor using thermal grease provided by the utility model has thermal grease filled between the sensing element and the housing. The thermal grease plays a role of heat transfer and stress buffering between the sensing element and the housing, thereby extending the service life of the product, balancing materials with different thermal expansion coefficients, and greatly improving the problem of separation of the housing and the thermal grease due to aging caused by temperature shock. Sealing rings are arranged inside and outside the housing, so that the connector can be more firmly installed in the housing, effectively preventing water vapor in the external environment from penetrating into the temperature sensor, and improving the waterproof performance of the temperature sensor.

[0044] Although various embodiments of the present invention have been described above, it should be understood that they are presented by way of example only and not limitation. It will be apparent to those skilled in the relevant art that various combinations, modifications, and variations may be made thereto without departing from the spirit and scope of the present invention. Therefore, the breadth and scope of the present invention as disclosed herein should not be limited by the exemplary embodiments disclosed above, but should be defined solely in accordance with the appended claims and their equivalents.

Claims

1. A temperature sensor using thermal grease, characterized in that: include: shell; A connector, comprising a connector plug and a connector housing; an electrical plug, one end of which is fixed to the connector and the other end of which extends into the housing; an inner sealing ring, the inner sealing ring being arranged in the housing to ensure that the connector is installed in the housing; an outer sealing ring, arranged outside the housing to ensure that the connector is installed in the housing; a thermal element, the thermal element comprising a sensing element and a lead, the sensing element being arranged at the bottom end of the housing, one end of the lead being connected to the sensing element, and the other end of the lead being connected to a corresponding electrical plug extending into the housing; and Thermally conductive silicone grease fills the bottom end of the housing and covers the sensing element.

2. The temperature sensor using thermal grease according to claim 1, characterized in that: The shell is a stainless steel shell, an aluminum alloy shell, a magnesium alloy shell, or a titanium alloy shell.

3. The temperature sensor using thermal grease according to claim 1, characterized in that: The connector is a stainless steel connector, an aluminum alloy connector, a magnesium alloy connector, a titanium alloy connector, a rubber connector, a polypropylene connector, a polyethylene connector, or a polyvinyl chloride connector.

4. The temperature sensor using thermal grease according to claim 1, characterized in that: There are 2 or more electrical plugs.

5. The temperature sensor using thermal grease according to claim 1, characterized in that: The inner sealing ring is arranged at a corner inside the housing; and / or The outer sealing ring is arranged at a corner outside the housing.

6. The temperature sensor using thermal grease according to claim 1, characterized in that: The inner sealing ring is a rubber sealing ring, a polypropylene sealing ring, a polyethylene sealing ring, or a polyvinyl chloride sealing ring; and / or The outer sealing ring is a rubber sealing ring, a polypropylene sealing ring, a polyethylene sealing ring, or a polyvinyl chloride sealing ring.

7. The temperature sensor using thermally conductive silicone grease according to claim 1, characterized in that: The sensing element is a thermistor or a thermocouple.

8. The temperature sensor using thermal grease according to claim 1, characterized in that: There are two or more leads.

9. The temperature sensor using thermally conductive silicone grease according to claim 1, characterized in that: The sensing element is 1mm-5mm away from the inner wall of the bottom end of the shell.

10. The temperature sensor using thermal grease according to claim 1, characterized in that: The top of the thermal conductive silicone grease is 1 mm to 10 mm higher than the top of the sensing element.

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