Terminal type temperature sensor
By crimping and encapsulating the sensor body within the OT terminal, the problem of poor installation reliability of temperature sensors on motors and charging systems is solved, thereby improving the stability and detection accuracy of the sensor.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAOGAN HUAGONG GAOLI ELECTRONICS CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-05-05
AI Technical Summary
Existing temperature sensors have poor mounting reliability on motors and charging systems, and the sensor head is prone to detachment.
The sensor employs an OT terminal, including a mounting head and a packaging tail. The sensor body is press-fitted and packaged in the OT terminal by a housing pressing part, and the sensor is reliably fixed by a deformable transition plate and a pressing unit.
It improves the structural stability and detection accuracy of the sensor, prevents the sensor from falling off, and is easy to operate and has high assembly efficiency.
Smart Images
Figure CN224202588U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of temperature detection technology, and specifically relates to a terminal type temperature sensor. Background Technology
[0002] With the rapid development of new energy vehicles, high-power engines, fast charging, and supercharging technologies are constantly being upgraded. This has led to more frequent high-temperature and overheating situations, posing certain safety risks. Therefore, temperature sensors are installed on the motor and charging system to monitor the temperature of these components and respond promptly to prevent overheating-related safety accidents. However, current methods for installing temperature sensors on motors and charging systems suffer from problems such as poor reliability of the sensor mounting structure, leading to issues like sensor heads easily detaching. Utility Model Content
[0003] This utility model relates to a terminal-type temperature sensor, which can at least solve some of the defects of the prior art.
[0004] This utility model relates to a terminal-type temperature sensor, including a sensor body and an OT terminal, wherein the OT terminal includes a mounting head and a packaging tail.
[0005] The mounting head has mounting holes for fixed connection with the component to be tested.
[0006] The encapsulation tail includes a base and a housing pressing part. The base is U-shaped, and the sensor body is housed in the cavity of the base. The housing pressing part is movably connected to the opening of the base and presses against the sensor body.
[0007] As one embodiment, the housing pressing part includes a first pressing unit and a second pressing unit, wherein the first pressing unit presses against the head of the housing of the sensor body, and the second pressing unit presses against the tail of the housing of the sensor body.
[0008] As one embodiment, the first pressing unit includes two first pressing plates, which are respectively connected to two opposite groove edges of the base through deformable transition plates and are both pressed against the housing head of the sensor body.
[0009] As one embodiment, the second pressing unit includes two second pressing plates, which are respectively connected to two opposite groove edges of the base through deformable transition plates and are both pressed against the tail of the sensor body housing.
[0010] As one implementation, the free ends of the two second pressing plates are brought close to each other and define a first pressing seam, which is bent at least once.
[0011] As one implementation method, the free ends of the two second pressing plates are both stepped, and the direction of their step-up is opposite, so that the first pressing seam is a tongue and groove seam.
[0012] As one embodiment, the packaging tail also includes a wire crimping unit, which is movably connected to the slot of the base. A wire is led out from the sensor body, and the wire is crimped by the wire crimping unit.
[0013] As one embodiment, the wire crimping unit includes two third crimping plates, which are respectively connected to two opposite groove edges of the base through deformable transition plates and are both pressed against the wire.
[0014] As one implementation, the free ends of the two third pressing plates are brought close to each other and define a second pressing seam, which is bent at least once.
[0015] As one implementation method, the wire crimping unit abuts against the tail end of the sensor body housing.
[0016] This utility model has at least the following beneficial effects:
[0017] In this invention, OT terminals are used to achieve the external packaging and installation of the sensor body. The sensor body is pressed and packaged in the OT terminals by the housing pressing part. This method is convenient to operate, has high assembly efficiency, and high packaging reliability. It can effectively prevent the sensor body from falling off, ensure the structural stability of the temperature sensor, and thus improve its detection accuracy. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the structure of a terminal-type temperature sensor provided in an embodiment of the present invention;
[0020] Figures 2-5 This is a schematic diagram of the structure of an OT terminal provided in an embodiment of the present invention; wherein, Figure 2 and Figure 3 This is a schematic diagram after crimping. Figure 4 and Figure 5 This is a schematic diagram before crimping;
[0021] Figure 6This is a schematic diagram of the sensor body (with wires) provided in an embodiment of the present invention. Detailed Implementation
[0022] The technical solutions in the embodiments of this utility model are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0023] like Figures 1-5 This utility model provides a terminal-type temperature sensor, including a sensor body and an OT terminal 2. The OT terminal 2 includes a mounting head 21 and a package tail 22. The mounting head 21 has a mounting hole for fixed connection with the component under test. The package tail 22 includes a base 221 and a housing pressing part. The base 221 is U-shaped. The sensor body is accommodated in the cavity of the base 221. The housing pressing part is movably connected to the opening of the base 221 and presses against the sensor body.
[0024] In one embodiment, such as Figure 6 The aforementioned sensor body includes a housing 11 and a temperature-sensing element 13 encapsulated within the housing 11. The temperature-sensing element 13 is connectable to a wire 12, which extends from the housing 11. The temperature-sensing element 13 can be a thermistor, platinum resistance thermometer, or other temperature-sensing element. Optionally, the temperature-sensing element 13 and the wire 12 are welded together using a combination of resistance welding and laser welding to form a welded semi-finished product, which is then encapsulated in the housing 11.
[0025] Preferably, the sensor body is encapsulated in a plastic encapsulation manner. After the encapsulation shell 11 covers the temperature sensing head of the welded semi-finished product (completely covering the temperature sensing element 13), the encapsulation shell 11 can be used to complete the plastic encapsulation of the welded semi-finished product by high-temperature melting.
[0026] Optionally, the aforementioned encapsulation housing 11 is a fluoroplastic housing, and the aforementioned sensor body is correspondingly a fluoroplastic encapsulated temperature sensor. Further, the encapsulation housing 11 includes an inner tube and an outer tube. Under high temperature conditions, the inner tube melts into a molten state, serving a sealing function, while the outer tube shrinks, serving a shaping and insulating protection function.
[0027] In the structure matching the OT terminal 2, the aforementioned encapsulation housing 11 is preferably cylindrical and preferably in close contact with the inner wall of the base 221, which can increase the temperature sensing area and improve the temperature sensing accuracy. Furthermore, the outer wall of the base 221 is chamfered, that is, it includes a planar segment and curved segments connecting the two ends of the planar segment. The planar segment is preferably coplanar with the mounting head 21. When the mounting head 21 is fixedly connected to the component under test, the planar segment is in close contact with the plane of the component under test. This method can significantly increase the contact area with the component under test, thereby improving the temperature measurement accuracy.
[0028] In another embodiment, the encapsulation tail 22 of the OT terminal 2 can also adopt a square tube structure, and the cross-section of the base 221 is a rectangular groove. The encapsulation housing 11 can be designed as a square housing to match. Since the cross-section of the base 221 is a rectangular groove, it can also ensure a large contact area with the component under test.
[0029] Generally, the mounting head 21 of the OT terminal 2 is used to fix the component under test to the device by screws, and screws that match the size and specifications of the mounting hole can be used.
[0030] In this embodiment, the OT terminal 2 is used to realize the outer packaging and installation of the sensor body. The sensor body is pressed and packaged in the OT terminal 2 by the housing pressing part. This is convenient to operate, has high assembly efficiency and high packaging reliability. It can effectively prevent the sensor body from falling off, ensure the structural stability of the temperature sensor, and thus improve its detection accuracy.
[0031] In one embodiment, such as Figures 1-5 The housing pressing part includes a first pressing unit 222 and a second pressing unit. The first pressing unit 222 presses against the head of the housing of the sensor body, and the second pressing unit presses against the tail of the housing of the sensor body. The sensor body is pressed into the base 221 by the first pressing unit 222 and the second pressing unit, so as to achieve reliable fixation of the sensor body and high structural stability and reliability.
[0032] Optionally, such as Figures 2-5 The first crimping unit 222 includes two first crimping plates 2221. The two first crimping plates 2221 are respectively connected to the two opposite groove edges of the base 221 through deformable transition plates and are both pressed against the housing head of the sensor body.
[0033] The surface of the first pressing plate 2221 is parallel to the length direction (i.e., its axial direction) of the encapsulation tail 22. Based on the deformation of the deformable transition plate, the first pressing plate 2221 can be raised and lowered. When the first pressing plate 2221 is raised, it facilitates the insertion and removal of the sensor body; when the first pressing plate 2221 is lowered, it constrains the sensor body. The deformable transition plate is preferably a plate with a certain degree of plastic deformation capability, including but not limited to metal plates with plastic deformation capability, such as aluminum alloy, copper, copper alloy, titanium alloy, etc., or high-performance plastic plates such as PP, PE, etc.
[0034] The pressing surface of the first pressing plate 2221 is preferably matched with the outer surface of the encapsulation housing 11. For example, if the encapsulation housing 11 is cylindrical, the pressing surface of the first pressing plate 2221 is correspondingly an arc surface, which can improve the constraint effect on the encapsulation housing 11.
[0035] In one embodiment, an elastic liner is provided on the pressing surface of the first pressing plate 2221. The elastic liner includes, but is not limited to, elastic rubber. By providing the elastic liner, the gap that may exist between the first pressing plate 2221 and the encapsulation housing 11 can be eliminated in a compensatory manner, ensuring the pressing effect and preventing unnecessary shaking of the sensor body. Moreover, the elastic liner can also increase the friction between the first pressing plate 2221 and the encapsulation housing 11, resulting in a better constraint effect on the sensor body.
[0036] Optionally, such as Figures 2-5 The second pressing unit includes two second pressing plates 2231. The two second pressing plates 2231 are respectively connected to the two opposite groove edges of the base 221 through deformable transition plates and are both pressed against the tail of the housing of the sensor body.
[0037] The surface of the second pressing plate 2231 is parallel to the length direction (i.e., its axial direction) of the encapsulation tail 22. Based on the deformation of the deformable transition plate, the second pressing plate 2231 can be tilted up and down. When tilted up, it facilitates the insertion and removal of the sensor body; when tilted down, it constrains the sensor body. This deformable transition plate is preferably made of a plate with a certain degree of plastic deformation capability, including but not limited to metal plates with plastic deformation capability, such as aluminum alloy, copper, copper alloy, titanium alloy, etc., or high-performance plastic plates such as PP, PE, etc.
[0038] The pressing surface of the second pressing plate 2231 is preferably matched with the outer surface of the encapsulation housing 11. For example, if the encapsulation housing 11 is cylindrical, the pressing surface of the second pressing plate 2231 is correspondingly an arc surface, which can improve the constraint effect on the encapsulation housing 11. Similarly, an elastic liner can be provided on the pressing surface of the second pressing plate 2231.
[0039] In one embodiment, such as Figures 1-3 The free ends of the two second pressing plates 2231 are brought close together and define a first pressing seam 2230, the first pressing seam 2230 being bent at least once. Optionally, as... Figures 1-5 Both free ends of the two second pressing plates 2231 have a stepped structure, and the direction of their step-up is opposite, making the first pressing seam 2230 a tongue and groove joint. Based on the above structure, the two second pressing plates 2231 can reliably press and fix the encapsulation housing 11, ensuring the encapsulation effect of the OT terminal 2 on the sensor body; moreover, the first pressing seam 2230 is bent at least once, which not only plays the role of reliably pressing the encapsulation housing 11, but also has a good anti-separation effect on the two second pressing plates 2231, preventing accidental external interference from causing the pressing function of the second pressing plates 2231 to fail.
[0040] In particular, a head-side crimping seam is defined between the two first crimping plates 2221. The width of the head-side crimping seam is preferably greater than the width of the first crimping seam 2230. In this way, the first crimping unit 222 mainly plays a positioning and constraint role, while the second crimping unit plays a main crimping and fixing role. While ensuring the constraint effect on the sensor body, the assembly efficiency of the temperature sensor can be improved.
[0041] In one embodiment, such as Figures 1-5 The encapsulation tail 22 further includes a wire crimping unit 224, which is movably connected to the slot of the base 221. A wire 12 extends from the sensor body and is crimped by the wire crimping unit 224. By crimping and fixing the wire 12 with the wire crimping unit 224, the encapsulation reliability of the OT terminal 2 to the sensor body can be further improved, correspondingly enhancing the anti-shake effect of the sensor body and the temperature measurement accuracy.
[0042] Optionally, such as Figures 2-5 The wire crimping unit 224 includes two third crimping plates 2241. The two third crimping plates 2241 are respectively connected to the two opposite groove edges of the base 221 through deformable transition plates and are both pressed against the wire 12.
[0043] The surface of the third pressing plate 2241 is parallel to the length direction (i.e., its axial direction) of the encapsulation tail 22. Based on the deformation of the deformable transition plate, the third pressing plate 2241 can be raised and lowered. When raised, it facilitates the insertion and removal of the wire 12; when lowered, it constrains the wire 12. This deformable transition plate preferably uses a plate with a certain degree of plastic deformation capability, including but not limited to metal plates with plastic deformation capability, such as aluminum alloy, copper, copper alloy, titanium alloy, etc., or high-performance plastic plates such as PP, PE, etc.
[0044] Similarly, an elastic liner can be provided on the pressing surface of the third pressing plate 2241.
[0045] In one embodiment, such as Figures 1-3 The free ends of the two third pressing plates 2241 are brought close together and define a second pressing seam 2240, which is bent at least once. Optionally, as Figures 2-5 The free ends of both third crimping plates 2241 are stepped, and the direction of their step-up is opposite, making the second crimping seam 2240 a tongue-and-groove joint. Based on the above structure, the two third crimping plates 2241 can reliably hold the conductor 12 tightly, and the anti-separation effect of the two third crimping plates 2241 is good, preventing accidental external interference from causing the crimping function of the third crimping plates 2241 to fail.
[0046] More preferably, the wire crimping unit 224 abuts against the tail end of the housing of the sensor body. By using the wire crimping unit 224 to limit the packaging housing 11, the packaging reliability of the OT terminal 2 to the sensor body can be further improved, thereby improving the structural stability of the sensor body and the temperature measurement accuracy can be improved accordingly.
[0047] Optionally, such as Figures 2-5 The base 221 has a main body section and a tapered tail section. The first crimping unit 222 and the second crimping unit are both disposed on the main body section, while the wire crimping unit 224 is disposed on the tapered tail section. By tapering the tail of the base 221, the wire crimping unit 224 can reliably limit the tail end of the encapsulation housing 11 while matching the size specifications of the wire 12. Furthermore, preferably, the groove depth of the tapered tail section is less than the groove depth of the main body section. After the wire crimping unit 224 is crimped onto the wire 12, it abuts against the middle portion of the tail end of the encapsulation housing 11 rather than against the top of the tail end, thus also reliably limiting the tail end of the encapsulation housing 11.
[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A terminal-type temperature sensor, comprising a sensor body, characterized in that, It also includes OT terminals, which include a mounting head and a package tail. The mounting head has mounting holes for fixed connection with the component to be tested. The encapsulation tail includes a base and a housing pressing part. The base is U-shaped, and the sensor body is housed in the cavity of the base. The housing pressing part is movably connected to the opening of the base and presses against the sensor body.
2. The terminal-type temperature sensor as described in claim 1, characterized in that: The housing crimping part includes a first crimping unit and a second crimping unit. The first crimping unit is pressed against the head of the housing of the sensor body, and the second crimping unit is pressed against the tail of the housing of the sensor body.
3. The terminal-type temperature sensor as described in claim 2, characterized in that: The first pressing unit includes two first pressing plates, which are respectively connected to two opposite groove edges of the base through deformable transition plates and are both pressed against the housing head of the sensor body.
4. The terminal-type temperature sensor as described in claim 2, characterized in that: The second pressing unit includes two second pressing plates, which are respectively connected to two opposite groove edges of the base through deformable transition plates and are both pressed against the tail of the sensor body housing.
5. The terminal-type temperature sensor as described in claim 4, characterized in that: The free ends of the two second pressing plates are brought close to each other and define a first pressing seam, which is bent at least once.
6. The terminal-type temperature sensor as described in claim 5, characterized in that: The free ends of both second pressing plates are stepped, and the direction of their step-up is opposite, making the first pressing seam a tongue and groove joint.
7. The terminal-type temperature sensor as described in claim 1, characterized in that: The packaging tail also includes a wire crimping unit, which is movably connected to the slot of the base. Wires are led out from the sensor body and are crimped by the wire crimping unit.
8. The terminal-type temperature sensor as described in claim 7, characterized in that: The wire crimping unit includes two third crimping plates, which are connected to two opposite groove edges of the base via deformable transition plates and are both pressed against the wire.
9. The terminal-type temperature sensor as described in claim 8, characterized in that: The free ends of the two third pressing plates are brought close to each other and define a second pressing seam, which is bent at least once.
10. The terminal-type temperature sensor according to any one of claims 7 to 9, characterized in that: The wire crimping unit abuts against the tail end of the sensor body housing.