Temperature sensor

Abstract

The invention relates to a temperature sensor which comprises a sensor body and a double-position buckle, and the double-position buckle is provided with an installation structure used for being connected with a component to be measured; and the clamping structure comprises a first crimping part and a second crimping part, the first crimping part and the second crimping part are both connected to the mounting structure, and the sensor body is fixedly connected with the first crimping part and the second crimping part in a pressing manner. According to the temperature sensor, the sensor body is pressed and fixed through the first crimping part and the second crimping part, double-position fixing of the sensor body is achieved, stability and reliability are achieved, the sensor body can be effectively prevented from falling off, the structural stability of the temperature sensor is guaranteed, and then the detection precision of the temperature sensor is improved.

Description

Technical Field

[0001] The present invention relates to a temperature sensor. Background Art

[0002] With the rapid development of new energy vehicles, the technologies of high-power engines, fast charging, and ultra-fast charging are continuously iterated and upgraded. As a result, high-temperature and overheating conditions occur more frequently, which has a certain impact on safety. Therefore, corresponding temperature sensors are installed on the motor and charging system to monitor the temperature of the corresponding parts, make timely responses, and prevent safety accidents caused by high temperature and overheating. However, there are problems such as poor reliability of the sensor installation structure when installing temperature sensors on the motor and charging system currently, and phenomena such as easy detachment of the sensor head are likely to occur. Summary of the Invention

[0003] The present invention relates to a temperature sensor, which can at least solve some defects of the prior art.

[0004] The present invention relates to a temperature sensor, including a sensor body and also including a double-position buckle, and the double-position buckle has:

[0005] An installation structure for connecting with a component to be measured;

[0006] A clamping structure, the clamping structure includes a first crimping part and a second crimping part, both the first crimping part and the second crimping part are connected to the installation structure, and the sensor body is respectively crimped and firmly connected to the first crimping part and the second crimping part.

[0007] As one of the embodiments, the first crimping part includes two first crimping plates, both of the two first crimping plates are deformable plate bodies and are oppositely arranged on the installation structure, and the two first crimping plates are respectively crimped on the housing head of the sensor body and hold the housing head by the two of them.

[0008] As one of the embodiments, the housing head includes two opposite first head side walls and two opposite second head side walls;

[0009] The first crimping plate includes a first constraint plate section and a first crimping plate section, two ends of the first constraint plate section are respectively connected to the installation structure and the first crimping plate section through transition plate sections, and the transition plate sections are deformable plate sections; the two first constraint plate sections respectively abut against the two first head side walls, and the two first crimping plate sections are both pressed against one of the second head side walls and make the other second head side wall abut against the installation structure.

[0010] As one of the implementation manners, the second crimping portion includes two second crimping plates. Both of the two second crimping plates are deformable plate bodies and are oppositely arranged on the mounting structure. The two second crimping plates are respectively crimped on the tail of the housing of the sensor body, and the housing tail is clamped by the two second crimping plates.

[0011] As one of the implementation manners, the housing tail includes two opposite first tail side walls and two opposite second tail side walls;

[0012] The second crimping plate includes a second constraint plate section and a second crimping plate section. The two ends of the second constraint plate section are respectively connected to the mounting structure and the second crimping plate section through transition plate sections. The transition plate sections are deformable plate sections. The two second constraint plate sections respectively abut against the two first tail side walls. The two second crimping plate sections are both pressed against one of the second tail side walls, and the other second tail side wall is abutted against the mounting structure.

[0013] As one of the implementation manners, the clamping structure further includes an end baffle. The end baffle is connected to the mounting structure, and the end of the housing of the sensor body abuts against the end baffle.

[0014] As one of the implementation manners, the mounting structure includes a channel-shaped clamping plate adapted to be sleeved on a component to be measured. The channel-shaped clamping plate includes a channel bottom plate and two channel side plates. The channel bottom plate has a first plate surface opposite to the channel opening and a second plate surface opposite to the channel opening. The first crimping portion and the second crimping portion are both connected to the channel bottom plate, and the sensor body is pressed by the first crimping portion and the second crimping portion on the second plate surface.

[0015] As one of the implementation manners, the mounting structure further includes an inverted buckle pressing plate. The pressing surface of the inverted buckle pressing plate is opposite to the first plate surface. The inverted buckle pressing plate is connected to the channel-shaped clamping plate through an elastic portion so that its pressing surface is movable relative to the first plate surface.

[0016] As one of the implementation manners, a reverse prevention portion for being clamped into a mating groove on the component to be measured is convexly provided on the pressing surface.

[0017] As one of the implementation manners, the elastic portion is a spring piece. One end of the spring piece is connected to one end of the channel bottom plate, the inverted buckle pressing plate is connected to the other end of the spring piece, and the middle of the spring piece is bent at least once.

[0018] The present invention has at least the following beneficial effects:

[0019] In the present invention, the sensor body is tightly fixed by the first crimping portion and the second crimping portion, realizing double-position fixing of the sensor body, which is stable and reliable, can effectively prevent the sensor body from falling off, ensure the structural stability of the temperature sensor, and thus improve its detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0021] Figure 1 FIG. is a schematic structural diagram of the temperature sensor provided by the embodiment of the present invention

[0022] Figure 2 FIG. is a schematic structural diagram of the double-position buckle provided by the embodiment of the present invention;

[0023] Figure 3 FIG. is a cross-sectional view of the double-position buckle;

[0024] Figure 4 FIG. is a schematic structural diagram of the sensor body provided by the embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] As Figures 1 - 3 , the embodiment of the present invention provides a temperature sensor, including a sensor body and a double-position buckle, and the double-position buckle has:

[0027] An installation structure for connecting with the component to be measured;

[0028] A clamping structure, the clamping structure includes a first crimping portion 21 and a second crimping portion 22, the first crimping portion 21 and the second crimping portion 22 are both connected to the installation structure, and the sensor body is respectively tightly connected to the first crimping portion 21 and the second crimping portion 22 by pressing.

[0029] In one embodiment, as Figure 4, the above-mentioned sensor body includes a packaging shell 11 and a temperature sensing element 13 encapsulated in the packaging shell 11. The temperature sensing element 13 can be connected to a wire 12, and the wire 12 extends out of the packaging shell 11. Among them, the above-mentioned temperature sensing element 13 can adopt a thermistor, a platinum resistor or other temperature sensing elements 13; optionally, the temperature sensing element 13 and the wire 12 are welded together by a combination of resistance welding and laser welding to form a welded semi-finished product, and then the head of the welded semi-finished product is encapsulated with the packaging shell 11.

[0030] Preferably, the above-mentioned sensor body is encapsulated by plastic encapsulation. After the packaging shell 11 sleeves the temperature sensing head of the above-mentioned welded semi-finished product (completely covering the temperature sensing element 13), the plastic encapsulation of the welded semi-finished product by the packaging shell 11 can be completed by high-temperature melting.

[0031] Optionally, the above-mentioned packaging shell 11 is a fluoroplastic shell, and the above-mentioned sensor body is correspondingly a fluoroplastically encapsulated temperature sensor. Further, the packaging shell 11 includes an inner tube and an outer tube. In a high-temperature state, the inner tube will melt into a molten state to play a sealing role, and the outer tube will shrink to play a role in shaping and insulating protection.

[0032] In one embodiment, as Figure 1 and Figure 4 , the above-mentioned packaging shell 11 is in the shape of a cuboid, which is convenient to be clamped by a clamping structure; of course, the packaging shell 11 is not limited to this shape, and a cylindrical or special-shaped packaging shell 11 is also applicable to this embodiment.

[0033] The above-mentioned installation structure is used to connect with the component to be measured, that is, the sensor body is installed on the component to be measured. In one embodiment, as Figures 1 - 3 , the installation structure includes a grooved splint 31 adapted to be sleeved on the component to be measured. Through the grooved splint 31, it can not only be stably buckled on the component to be measured, but also facilitate guiding installation, and can prevent the double-position buckle from shaking left and right during and after installation.

[0034] Among them, the above-mentioned grooved splint 31 includes a groove bottom plate 311 and two groove side plates 312. The groove bottom plate 311 has a first plate surface opposite to the groove opening and a second plate surface opposite to the groove opening. The two groove side plates 312 are relatively connected to the two long sides of the groove bottom plate 311, so that the three enclose to form a C-shaped groove.

[0035] It can be understood that the component to be measured has an installation position adapted to the above-mentioned grooved splint 31. For example, when applied to the motor and charging system of a new energy vehicle, the above-mentioned grooved splint 31 can be buckled onto the copper busbar therein.

[0036] Optionally, as Figure 2, the above-mentioned groove side plate 312 includes an arc plate segment (shown in the figure, not labeled) and a straight plate segment. The two ends of the arc plate segment are respectively connected to the groove bottom plate 311 and the straight plate segment. The center side of the arc plate segment faces the groove cavity. The setting of the arc plate segment can not only improve the structural strength of the groove-shaped splint 31, but also facilitate the realization of guiding installation. Among them, the installation position on the component to be measured is designed into a corresponding shape matchingly.

[0037] Furthermore, both the first crimping portion 21 and the second crimping portion 22 are connected to the groove bottom plate 311, and the sensor body is pressed by the first crimping portion 21 and the second crimping portion 22 on the second plate surface.

[0038] Optionally, as Figure 1 and Figure 2 , extension plate bodies 3111 can extend outwards respectively at the two longitudinal ends of the groove bottom plate 311 (this longitudinal direction is parallel to the groove length direction, that is, parallel to the guiding installation direction of the groove-shaped splint 31). The above-mentioned first crimping portion 21 and second crimping portion 22 are respectively arranged on the two extension plate bodies 3111. This way can reliably restrain the sensor body, prevent the sensor body from shaking, and improve the heat conduction efficiency.

[0039] In one embodiment, as Figures 1 - 3 , the installation structure further includes an inverted buckle pressing plate 32. The pressing surface of the inverted buckle pressing plate 32 faces the first plate surface, and the inverted buckle pressing plate 32 is connected to the groove-shaped splint 31 through an elastic part so that its pressing surface is movable relative to the first plate surface.

[0040] Among them, in the initial state, the distance between the pressing surface of the inverted buckle pressing plate 32 and the first plate surface of the groove bottom plate 311 is smaller than the thickness of the component at the installation position, ensuring that after the groove-shaped splint 31 is installed to the installation position, the inverted buckle pressing plate 32 can buckle the component to be measured; and based on the elastic action of the elastic part, it is ensured that the distance between the inverted buckle pressing plate 32 and the groove bottom plate 311 can adapt to the structural parameters of the component to be measured during installation, and it is ensured that the inverted buckle pressing plate 32 can apply a certain pressure to the component to be measured after being installed in place, thereby ensuring the installation reliability of the temperature sensor.

[0041] Among them, through the coupling of the clamping action of the groove-shaped splint 31 and the buckling action of the inverted buckle pressing plate 32, the installation reliability of the temperature sensor can be effectively improved, and the temperature sensor can be prevented from shaking or falling off; at the same time, based on the above installation structure, the efficient disassembly and assembly of the temperature sensor can be realized, and the installation and maintenance are very convenient, which is convenient for its use in occasions such as new energy vehicles.

[0042] Preferably, as Figures 1 - 3The elastic portion is a spring clip 33, one end of which is connected to one end of the slot bottom plate 311, and the inverted pressure plate 32 is connected to the other end of the spring clip 33. The middle portion of the spring clip 33 is bent at least once. The spring clip 33 is connected to one longitudinal end of the slot bottom plate 311. In the aforementioned structure with an extension plate 3111, the spring clip 33 can be connected to the extension plate 3111 on the corresponding side. The inverted pressure plate 32, spring clip 33, and slot bottom plate 311 can be connected to form a clip. Bending the spring clip 33 at least once can ensure its anti-deformation ability and prevent it from irreversible deformation during installation and use. It is preferably designed to be bent multiple times.

[0043] Preferably, if Figure 3 The holding surface is provided with a protruding anti-return portion 321 for snapping into the matching groove on the component to be measured. This method can further improve the installation reliability of the temperature sensor and has a better anti-falling effect. Moreover, by means of the anti-return portion 321 cooperating with the matching groove on the component to be measured, the temperature sensor can be positioned and installed, thereby improving the installation accuracy of the temperature sensor. Furthermore, the anti-return portion 321 is in the shape of a plate, which is inclined relative to the holding surface and extends obliquely toward the elastic portion. This type of anti-return portion 321 can play a role in anti-return installation and can prevent the groove-shaped clamping plate 31 from separating from the component to be measured against the direction of the guide installation. The anti-return portion 321 can be an elastic plate, which is easy to snap into the matching groove of the component to be measured and can be separated from the matching groove under the action of external force.

[0044] In this embodiment, the sensor body is pressed and fixed by the first crimping portion 21 and the second crimping portion 22, thereby achieving double-position fixation of the sensor body, which is stable and reliable, can effectively prevent the sensor body from falling off, ensure the structural stability of the temperature sensor, and thus improve its detection accuracy.

[0045] The first crimping portion 21 and the second crimping portion 22 are arranged in sequence along a predetermined direction. Specifically, the first crimping portion 21 and the second crimping portion 22 define the installation direction of the sensor body. This installation direction can, for example, provide the sensor body with a larger temperature-sensing area. For a rectangular package housing 11, the first crimping portion 21 and the second crimping portion 22 are arranged in sequence along the length of the package housing 11. This allows the first crimping portion 21 and the second crimping portion 22 to secure the head and tail of the package housing 11, respectively.

[0046] In one embodiment, Figure 1 and Figure 2, the first crimping portion 21 includes two first crimping plates 211. Both of the two first crimping plates 211 are deformable plate bodies and are oppositely arranged on the mounting structure. The two first crimping plates 211 are respectively crimped on the housing head of the sensor body, and the housing head is clamped by the two first crimping plates 211.

[0047] Due to the deformable characteristics of the first crimping plates 211, it is convenient to disassemble and assemble the sensor body in the first crimping portion 21, and the pressing force on the housing head can also be adjusted to achieve reliable fixation of the sensor body.

[0048] In the above structure provided with the extension plate body 3111, the two first crimping plates 211 can be oppositely arranged on the corresponding side extension plate bodies 3111.

[0049] Furthermore, as shown in Figure 1 and Figure 2 , the housing head includes two opposite first head side walls and two opposite second head side walls; the first crimping plate 211 includes a first constraint plate segment 2111 and a first crimping plate segment 2112. The two ends of the first constraint plate segment 2111 are respectively connected to the mounting structure and the first crimping plate segment 2112 through transition plate segments 2113. The transition plate segments 2113 are deformable plate segments; the two first constraint plate segments 2111 are respectively abutted against the two first head side walls, and the two first crimping plate segments 2112 are both pressed against one of the second head side walls, and the other second head side wall is abutted against the mounting structure.

[0050] Among them, the above first crimping plate 211 can be made of a metal plate, which can also improve the heat conduction effect to a certain extent; the first constraint plate segment 2111 and the first crimping plate segment 2112 can be made of rigid plate bodies or metal plates with a certain plastic deformation ability (the plastic deformation ability is weaker than that of the transition plate segment 2113); the transition plate segments 2113 are preferably made of plate bodies with a certain plastic deformation ability, including but not limited to metal plate bodies with plastic deformation ability, such as aluminum alloy, copper, copper alloy, titanium alloy, etc., or high-performance plastic plate bodies such as PP and PE.

[0051] In one embodiment, as shown in Figure 1 and Figure 2 , the second crimping portion 22 includes two second crimping plates 221. Both of the two second crimping plates 221 are deformable plate bodies and are oppositely arranged on the mounting structure. The two second crimping plates 221 are respectively crimped on the housing tail of the sensor body, and the housing tail is clamped by the two second crimping plates 221.

[0052] Due to the deformable characteristics of the second crimping plate 221, it is convenient for the disassembly and assembly of the sensor body in the second crimping part 22, and the pressing force on the tail of the housing can also be adjusted to achieve reliable fixation of the sensor body.

[0053] In the above structure with the extension plate body 3111, two second crimping plates 221 can be relatively arranged on the extension plate body 3111 on the corresponding side.

[0054] Furthermore, as Figure 1 and Figure 2 , the tail of the housing includes two opposite first tail side walls and two opposite second tail side walls; the second crimping plate 221 includes a second constraint plate section (shown, not labeled) and a second crimping plate section (shown, not labeled), and both ends of the second constraint plate section are respectively connected to the mounting structure and the second crimping plate section through a transition plate section (shown, not labeled), and the transition plate section is a deformable plate section; two second constraint plate sections respectively abut against the two first tail side walls, and two second crimping plate sections are both pressed against one of the second tail side walls and make the other second tail side wall abut against the mounting structure.

[0055] Among them, the above second crimping plate 221 can be made of a metal plate, which can also improve the heat conduction effect to a certain extent; the second constraint plate section and the second crimping plate section can be made of a rigid plate body, or can be made of a metal plate with a certain plastic deformation ability (the plastic deformation ability is weaker than that of the transition plate section); the transition plate section is preferably made of a plate body with a certain plastic deformation ability, including but not limited to a metal plate body with plastic deformation ability, such as aluminum alloy, copper, copper alloy, titanium alloy, etc., or a high-performance plastic plate body such as PP, PE, etc.

[0056] Based on the first crimping part 21 and the second crimping part 22 of the above structure, the sensor body can be fixed by crimping, which can improve the assembly efficiency of the temperature sensor.

[0057] In one embodiment, as Figures 1 - 3 , the clamping structure further includes an end baffle 23, the end baffle 23 is connected to the mounting structure, and the housing end of the sensor body abuts against the end baffle 23. In the above structure with the extension plate body 3111, the end baffle 23 can be arranged on the extension plate body 3111 on the corresponding side. Based on the above end baffle 23, not only can the positioning and installation of the sensor body be realized, but also the installation stability and reliability of the sensor body can be further improved through the cooperation of the end baffle 23 with the first crimping part 21 and the second crimping part 22.

[0058] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A temperature sensor, comprising a sensor body, characterized in that, It further includes a two-position buckle, and the two-position buckle has: An installation structure for connecting with the component to be measured; A clamping structure, the clamping structure includes a first crimping part and a second crimping part, both the first crimping part and the second crimping part are connected to the installation structure, and the sensor body is respectively crimped and firmly connected to the first crimping part and the second crimping part.

2. The temperature sensor according to claim 1, wherein: The first crimping part includes two first crimping plates, both of the two first crimping plates are deformable plate bodies and are oppositely arranged on the installation structure, and the two first crimping plates are respectively crimped on the housing head of the sensor body and hold the housing head tightly by the two of them.

3. The temperature sensor according to claim 2, characterized in that: The housing head includes two opposite first head side walls and two opposite second head side walls; The first crimping plate includes a first restraint plate section and a first crimping plate section, both ends of the first restraint plate section are respectively connected to the installation structure and the first crimping plate section through transition plate sections, and the transition plate sections are deformable plate sections; the two first restraint plate sections respectively abut against the two first head side walls, and the two first crimping plate sections are both pressed against one of the second head side walls and make the other second head side wall abut against the installation structure.

4. The temperature sensor according to claim 1, characterized in that: The second crimping part includes two second crimping plates, both of the two second crimping plates are deformable plate bodies and are oppositely arranged on the installation structure, and the two second crimping plates are respectively crimped on the housing tail of the sensor body and hold the housing tail tightly by the two of them.

5. The temperature sensor according to claim 4, wherein: The housing tail includes two opposite first tail side walls and two opposite second tail side walls; The second crimping plate includes a second restraint plate section and a second crimping plate section, both ends of the second restraint plate section are respectively connected to the installation structure and the second crimping plate section through transition plate sections, and the transition plate sections are deformable plate sections; the two second restraint plate sections respectively abut against the two first tail side walls, and the two second crimping plate sections are both pressed against one of the second tail side walls and make the other second tail side wall abut against the installation structure.

6. The temperature sensor according to claim 1, characterized in that: The clamping structure further includes an end baffle, the end baffle is connected to the installation structure, and the housing end of the sensor body abuts against the end baffle.

7. The temperature sensor according to claim 1, characterized in that: The installation structure includes a channel-shaped clamping plate adapted to be sleeved on the component to be measured, the channel-shaped clamping plate includes a channel bottom plate and two channel side plates, the channel bottom plate has a first plate surface opposite to the channel opening and a second plate surface opposite to the channel opening; the first crimping part and the second crimping part are both connected to the channel bottom plate, and the sensor body is pressed by the first crimping part and the second crimping part on the second plate surface.

8. The temperature sensor according to claim 7, characterized in that: The installation structure further includes an inverted buckle pressing plate, the pressing surface of the inverted buckle pressing plate is opposite to the first plate surface, and the inverted buckle pressing plate is connected to the channel-shaped clamping plate through an elastic part so that its pressing surface is movable relative to the first plate surface.

9. The temperature sensor according to claim 8, characterized in that: The pressing surface is convexly provided with an anti-reverse part for being stuck into a mating groove on the component to be measured.

10. The temperature sensor according to claim 8, characterized in that: The elastic part is a spring piece, one end of the spring piece is connected to one end of the channel bottom plate, the inverted buckle pressing plate is connected to the other end of the spring piece, and the middle part of the spring piece is bent at least once.

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