External temperature sensor

Abstract

The utility model relates to the field of temperature sensors, and discloses an external temperature sensor, which comprises a shell, a coating assembly and a sensor assembly, and is characterized in that the coating assembly is arranged in the shell and is provided with two first positioning grooves, and the two first positioning grooves penetrate through the coating assembly; the sensor assembly comprises a thermistor, two leads and two insertion pieces, the thermistor is arranged in the coating assembly, the two leads are connected with the thermistor and penetrate through the two first positioning grooves, one ends of the two insertion pieces are connected with the leads respectively, and the other ends of the two insertion pieces extend out of the coating assembly. The external temperature sensor provided by the utility model can effectively prevent the service life of the external temperature sensor from being affected by water vapor invasion.

Description

Technical Field

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

[0002] A temperature sensor is a sensor that converts temperature changes into electrical signals. Its working principle is to use the characteristic that the physical or chemical properties of certain substances change with temperature to convert temperature changes into electrical signals.

[0003] Publication No. CN216954869U discloses an oil-resistant and bend-resistant temperature sensor, which includes a thermistor, connecting wires and a heat shrink tubing. The two leads of the thermistor are respectively welded to the two connecting wires to form welding points; each lead of the thermistor and its corresponding welding point and the exposed part of the connecting wire are wrapped with a layer of insulating and sealed high-temperature coating; the heat shrink tubing is mounted on the outside of the thermistor and the high-temperature coating, and shrinks through directional heating to form a sealed protective layer.

[0004] The temperature sensor only encapsulates the thermistor with a high-temperature coating. If the thermistor is skewed during the packaging process, the high-temperature coating will be too thin. Too thin a coating may allow water vapor to penetrate, shortening the life of the sensor. Utility Model Content

[0005] The purpose of the present invention is to overcome the above technical deficiencies and to provide an external temperature sensor to solve the technical problem that the package may be too thin during the packaging process of the temperature sensor in the prior art.

[0006] In order to achieve the above technical purpose, the present invention adopts the following technical solutions:

[0007] The utility model provides an external temperature sensor, comprising:

[0008] shell;

[0009] A covering component, built into the housing, is provided with two first positioning grooves, and the two first positioning grooves pass through the covering component; and

[0010] The sensor assembly includes a thermistor, two leads and two inserts. The thermistor is built into the covering assembly. The two leads are connected to the thermistor and pass through the two first positioning slots. One end of the two inserts is respectively connected to the leads, and the other end extends out of the covering assembly.

[0011] In one embodiment, the sensor assembly further includes a packaging coating, wherein the packaging coating covers the thermistor.

[0012] In one embodiment, the covering component is further provided with two second positioning grooves, and the two second positioning grooves are located on both sides of the thermistor.

[0013] In one embodiment, a third positioning groove is provided at the end of the covering component, and the third positioning groove is located on a side of the thermistor away from the inserting piece.

[0014] In one embodiment, the sensor assembly further includes a connecting row connected to the other ends of the two inserts.

[0015] In one embodiment, a cutting groove is provided at the connection between the connecting row and the other ends of the two inserts.

[0016] In one embodiment, an interface groove is formed inwardly of the shell, and the other ends of the two inserting pieces extend into the interface groove and are arranged along the setting direction of the interface groove.

[0017] In one embodiment, the external temperature sensor further includes a snap assembly, which includes a connecting piece and a fixing snap, wherein the connecting piece is connected to the housing, and the fixing snap is connected to the connecting piece.

[0018] In one embodiment, the housing is provided with a slot;

[0019] The connecting member is slidably arranged in the slot and can be engaged with the shell.

[0020] In one embodiment, an elastic buckle is formed in the slot;

[0021] The connecting part includes a connecting portion and an inserting portion, the connecting portion is connected to the buckle, the inserting portion is connected to the connecting portion and is slidably inserted into the slot, the inserting portion is formed with a card slot, and can be engaged with the elastic buckle when the inserting portion is inserted into the slot.

[0022] Compared with the prior art, the external temperature sensor provided by the present invention is a thermistor that is first packaged by a covering assembly, and the covering assembly and the sensor assembly are secondarily packaged by a shell. Since the sensor assembly is packaged twice, the problem of water vapor intrusion caused by the sensor assembly being wrapped too thinly after packaging can be avoided; secondly, in the process of covering the thermistor, two leads and two inserts by the covering assembly, since two first positioning grooves are provided, and the two leads pass through the two first positioning grooves, they can enter the first positioning groove through the first positioning groove. After the packaging is completed, by observing the setting of the leads in the first positioning groove, it can be judged whether the leads, the thermistor and the two inserts are installed in place; at the same time, by providing the first positioning groove, the positioning structure can be extended into the first positioning groove to position the leads in the first positioning groove, thereby avoiding the installation position of the leads being tilted, resulting in excessive thin coating of some areas of the thermistor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the separation of the housing and the buckle assembly of the external temperature sensor provided by one embodiment of the present utility model;

[0024] Figure 2 This is a schematic diagram of the separation of the housing and the buckle assembly of the external temperature sensor provided by one embodiment of the present utility model;

[0025] Figure 3 This is a schematic structural diagram of an external temperature sensor provided by an embodiment of the present utility model;

[0026] Figure 4 This is an exploded view of the housing, covering assembly, and buckle assembly of the external temperature sensor provided by one embodiment of the present utility model;

[0027] Figure 5 This is a schematic structural diagram of a covering component in an external temperature sensor provided by an embodiment of the present utility model;

[0028] Figure 6 This is a schematic structural diagram of a covering component and a sensor component in an external temperature sensor provided by an embodiment of the present utility model;

[0029] Figure 7 It is along Figure 6 Cross-sectional view along line A-A:

[0030] Figure 8 This is a structural diagram of a sensor assembly after the encapsulation coating is separated in an external temperature sensor provided by an embodiment of the present invention;

[0031] Figure 9 This is a structural diagram of the connection between a connecting bar and multiple thermistors in an external temperature sensor provided by an embodiment of the present invention.

[0032] Description of reference numerals:

[0033] Shell 1;

[0034] Interface slot 11;

[0035] Slot 12;

[0036] Elastic buckle 13;

[0037] Covering component 2;

[0038] a first positioning groove 21;

[0039] a second positioning groove 22;

[0040] a third positioning groove 23;

[0041] Sensor assembly 3;

[0042] Thermistor 31;

[0043] Lead 32;

[0044] Insert 33;

[0045] Encapsulation coating 34;

[0046] Connecting row 35;

[0047] Cutting groove 351;

[0048] Buckle assembly 4;

[0049] Connector 41;

[0050] Connecting portion 411;

[0051] Plug-in portion 412;

[0052] Card slot 413;

[0053] Fixing buckle 42. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0055] In order to solve the technical problem that the package may be too thin during the packaging process of the temperature sensor, the utility model provides an external temperature sensor, which can avoid the problem that the temperature sensor package is too thin and affects the life of the sensor.

[0056] It should be noted that the external temperature sensor described in the present invention is used for but not limited to automobiles, etc. For the sake of convenience, in the present invention, only the application of the external temperature sensor to an automobile is used as an example. The principles of applying the external temperature sensor to other types of equipment are essentially the same as those applied to automobiles, and will not be described in detail here.

[0057] See also Figure 4 , Figure 4 This is an exploded view of the shell 1, covering component 2 and sensor component 3 in the external temperature sensor in one embodiment of the utility model. An external temperature sensor includes a shell 1, a covering component 2 and a sensor component 3. The covering component 2 is built into the shell 1 and is provided with two first positioning grooves 21. The two first positioning grooves 21 pass through the covering component 2; the sensor component 3 includes a thermistor 31, two leads 32 and two inserts 33. The thermistor 31 is built into the covering component 2, the two leads 32 are connected to the thermistor 31 and pass through the two first positioning grooves 21, one end of the two inserts 33 is respectively connected to the lead 32, and the other end extends out of the covering component 2.

[0058] Specifically, in the present invention, the thermistor 31 is encapsulated for the first time by the covering component 2, and the covering component 2 and the sensor component 3 are encapsulated for the second time by the shell 1. Since the sensor component 3 is encapsulated twice, the problem of water vapor intrusion caused by the sensor component 3 being wrapped too thin after encapsulation can be avoided; secondly, in the process of encapsulating the thermistor 31, the two leads 32 and the two inserts 33 by the covering component 2, since two first positioning grooves 21 are provided, and the two leads 32 pass through the two first positioning grooves 21, they can enter the first positioning groove 21 through the first positioning groove 21. After the encapsulation is completed, by observing the setting of the leads 32 in the first positioning groove 21, it can be judged whether the leads 32, the thermistor 31 and the two inserts 33 are installed in place; at the same time, by providing the first positioning groove 21, the positioning structure can be extended into the first positioning groove 21 to position the leads 32 in the first positioning groove 21, thereby avoiding the installation position of the leads 32 being tilted, resulting in excessive thin coating of part of the thermistor 31.

[0059] The direction in which the lead wire 32 passes through the first positioning slot 21 can be set as needed, such as Figure 5 As shown, in one embodiment, the direction in which the lead wire 32 passes through the first positioning groove 21 is perpendicular to the direction in which the first positioning groove 21 passes through the covering component 2 .

[0060] like Figure 8 As shown, in one embodiment, the sensor assembly 3 further includes a packaging coating 34 , which covers the thermistor 31 .

[0061] By providing the encapsulation coating 34, the thermistor 31 and the connection between the thermistor 31 and the lead 32 can be encapsulated. The encapsulation coating 34, the covering component 2 and the housing 1 realize a three-layer encapsulation of the thermistor 31, which can effectively protect the thermistor 31 and prevent water vapor from invading the thermistor 31.

[0062] It should be understood that the cover assembly 2 and the housing 1 can be spliced ​​to connect to the thermistor 31 within the encapsulation coating 34. Specifically, in one embodiment, the cover assembly 2 and the housing 1 are both injection molded. In this embodiment, the thermistor 31, the leads 32, and a portion of the insert 33 are first injection molded to form the cover assembly 2, which is then wrapped with the injection molding. This ensures a secure connection between the encapsulation coating 34, the cover assembly 2, and the housing 1, while preventing gaps at the connection.

[0063] like Figure 7 As shown, in one embodiment, the covering component 2 is further provided with two second positioning grooves 22 , and the two second positioning grooves 22 are located on both sides of the thermistor 31 .

[0064] By setting second positioning grooves 22 on both sides of the covering component 2, when the packaging coating 34 and the thermistor 31 are packaged, the positioning structure is embedded in the second positioning groove 22, which can limit the two sides of the thermistor 31 and prevent the thermistor 31 from shaking to the sides. The two second positioning grooves 22 are set to allow the positioning structure to enter so as to position the two sides of the thermistor 31.

[0065] like Figure 6 and Figure 7 As shown, in one embodiment, a third positioning groove 23 is provided at the end of the covering component 2 , and the third positioning groove 23 is located on a side of the thermistor 31 away from the inserting piece 33 .

[0066] By providing the third positioning groove 23 , the position of the covering component 2 in the housing 1 can be positioned.

[0067] like Figure 9 As shown, in one embodiment, the sensor assembly 3 further includes a connecting row 35 , which is connected to the other ends of the two inserts 33 .

[0068] By providing the connecting row 35, the connecting row 35 can fix the multiple plug-ins 33. When the plug-in 33 is connected to the lead 32, the plug-in 33 is prevented from shaking on the side away from the lead 32 to affect the connection. At the same time, after the lead 32 is connected to the plug-in 33, the lead 32, the plug-in 33 and the connecting row 35 form an integrated structure. At this time, it is convenient to package the lead 32, the plug-in 33 and the thermistor 31, which can improve production efficiency.

[0069] After the connecting bar 35 is connected to the plug 33, the plug 33 needs to be separated from the connecting bar 35. Figure 9 As shown, in one embodiment, a cutting groove 351 is provided at the connection between the connecting row 35 and the other ends of the two inserting pieces 33 .

[0070] When the inserting piece 33 and the connecting bar 35 need to be separated, the connection between the connecting bar 35 and the inserting piece 33 is cut off from behind the cutting groove 351 . The setting of the cutting groove 351 facilitates the separation of the connecting bar 35 and the inserting piece 33 .

[0071] It should be understood that the cutting groove 351 can be located on one side of the inserting piece 33 or be provided on both sides of the inserting piece 33 .

[0072] When installing the external temperature sensor, it is necessary to connect the plug 33 to other electrical components. Figure 1 As shown, in one embodiment, the housing 1 is formed with an interface slot 11 inwardly, and the other ends of the two inserting pieces 33 extend into the interface slot 11 and are arranged along the setting direction of the interface slot 11.

[0073] When it is necessary to connect the external temperature sensor to other electrical components, the electrical components are inserted into the interface slot 11 and electrically connected to the two plugs 33 in the interface slot 11 to facilitate connection between the plugs 33 and other electrical components.

[0074] In order to fix the external temperature sensor to the car, specifically, Figures 1 to 3 As shown, in one embodiment, the external temperature sensor further includes a snap assembly 4 , which includes a connecting member 41 and a fixing snap 42 , wherein the connecting member 41 is connected to the housing 1 , and the fixing snap 42 is connected to the connecting member 41 .

[0075] When the sensor needs to be fixed and stabilized, the fixing buckle 42 is locked in the slot provided on the vehicle, thereby achieving connection between the external temperature sensor and the vehicle and fixing the external temperature sensor.

[0076] The fixing buckle 42 may be a common buckle on a car, or a buckle of other forms or structures that can realize the connection between the connector 41 and the car.

[0077] It should be understood that the connection between the connecting member 41 and the housing 1 can be achieved by bonding, screw connection, etc. Specifically, Figures 1 to 3 As shown, in one embodiment, the housing 1 is provided with a slot 12 ; the connecting member 41 is slidably provided in the slot 12 and can be engaged with the housing 1 .

[0078] When it is necessary to connect the shell 1 and the connector 41, the connector 41 is inserted into the slot 12, and the connector 41 is snap-fitted to the shell 1, thereby connecting the shell 1 and the connector 41. The connection is a detachable connection, so that the shell 1 and the connector 41 can be molded separately and assembled into an integrated structure after molding.

[0079] It should be understood that a buckle can be provided on the housing 1 and a slot can be provided on the connector 41 to achieve the connection between the connector 41 and the housing 1, or a buckle can be provided on the connector 41 and a slot can be provided on the housing 1 to achieve the connection between the connector 41 and the housing 1. Specifically, Figures 1 to 3 As shown, in one embodiment, an elastic buckle 13 is formed in the slot 12; the connecting member 41 includes a connecting portion 411 and a plug-in portion 412, the connecting portion 411 is connected to the buckle, the plug-in portion 412 is connected to the connecting portion 411, and is slidably inserted into the slot 12, the plug-in portion 412 is formed with a card slot 413, and can be engaged with the elastic buckle 13 when the plug-in portion 412 is inserted into the slot 12.

[0080] When it is necessary to realize the connection between the connecting member 41 and the slot 12 and the snap connection with the housing 1, the plug-in part 412 is inserted into the slot 12. When the plug-in part 412 slides to abut the elastic snap 13, the elastic snap 13 is pushed to deform. When the plug-in part 412 slides to the slot 413 and aligns with the elastic snap 13, the elastic snap 13 is elastically reset and snapped into the slot 413 under the action of its own elastic reset force, thereby realizing the snap connection between the elastic snap 13 and the connecting part 411.

[0081] Among them, the connecting part 411 can be a plate, block, strip, etc. that plays a connecting role, and the plug-in part 412 can be an insert strip, an insert rod, an insert block, etc. The setting direction between the connecting part 411 and the plug-in part 412 can be set as needed. Specifically, in one embodiment, the connecting part 411 and the plug-in part 412 are set parallel to each other, and the connecting part 411 slides and fits the outer wall of one side of the shell 1.

[0082] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. An external temperature sensor, characterized in that include: shell; A covering component is built into the housing and is provided with two first positioning grooves, and the two first positioning grooves pass through the covering component; and The sensor assembly includes a thermistor, two leads and two inserts. The thermistor is built into the covering assembly. The two leads are connected to the thermistor and pass through the two first positioning slots. One end of the two inserts is respectively connected to the leads, and the other end extends out of the covering assembly.

2. The external temperature sensor according to claim 1, wherein: The sensor assembly further includes an encapsulation coating that covers the thermistor.

3. The external temperature sensor according to claim 1, wherein: The covering component is further provided with two second positioning grooves, and the two second positioning grooves are located on both sides of the thermistor.

4. The external temperature sensor according to claim 1, wherein: A third positioning groove is provided at the end of the covering component, and the third positioning groove is located on a side of the thermistor away from the inserting piece.

5. The external temperature sensor according to claim 1, wherein: The sensor assembly further includes a connecting row connected to the other ends of the two inserts.

6. The external temperature sensor according to claim 5, characterized in that: A cutting groove is provided at the connection between the connecting row and the other ends of the two inserting pieces.

7. The external temperature sensor according to claim 1, wherein: The shell is formed with an interface groove inwardly, and the other ends of the two inserting pieces extend into the interface groove and are arranged along the setting direction of the interface groove.

8. The external temperature sensor according to claim 1, wherein: The external temperature sensor further includes a buckle assembly, which includes a connecting piece and a fixing buckle. The connecting piece is connected to the housing, and the fixing buckle is connected to the connecting piece.

9. The external temperature sensor according to claim 8, characterized in that: The housing is provided with a slot; The connecting member is slidably arranged in the slot and can be engaged with the shell.

10. The external temperature sensor according to claim 9, characterized in that: An elastic buckle is formed in the slot; The connecting part includes a connecting portion and an inserting portion, the connecting portion is connected to the buckle, the inserting portion is connected to the connecting portion and is slidably inserted into the slot, the inserting portion is formed with a card slot, and can be engaged with the elastic buckle when the inserting portion is inserted into the slot.

Images