Special thermistor for EMU

Abstract

The application relates to the field of temperature detection devices, in particular to a special thermistor for a motor train, which comprises a connector and a temperature measuring element, the temperature measuring element is connected with the connector, an insulating tube is arranged outside the temperature measuring element, one end of the insulating tube is connected with the connector, the other end of the insulating tube is connected with a protective cover, a ventilation channel is arranged on the protective cover, the front end of the temperature measuring element is located in the ventilation channel, and the rear end of the temperature measuring element is fixed on the insulating tube. The special thermistor for the motor train provided by the application is protected by the protective cover outside the temperature measuring element, so that the temperature measuring element is prevented from being directly collided by large sundries mixed in the airflow blown out of an air outlet of an air conditioner, and the temperature measuring element is prevented from being damaged; the airflow blown out of the air conditioner can directly contact the temperature measuring element through the ventilation channel, and the data deviation of the thermistor detection is small.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of temperature detection devices, in particular to a thermistor special for a bullet train. BACKGROUND

[0002] The thermistor is a commonly used temperature measuring element, which is applied in the fields of air conditioning equipment, heating equipment, medical instruments, temperature control instruments, electronic gifts, electronic temperature and humidity meters, automobile temperature measurement, electronic perpetual calendars, rechargeable battery packs, wireless chargers, notebook computer batteries, etc.

[0003] The existing thermistor used for a bullet train is directly fixed to the air outlet of the air conditioner of the bullet train. In actual application, the airflow blown out of the air outlet of the air conditioner sometimes contains large impurities. The impurities collide with the temperature measuring element of the thermistor, causing damage to the temperature measuring element. Therefore, some people use a cover to cover the temperature measuring element when installing the thermistor. In this way, the airflow blown out of the air conditioner cannot directly contact the temperature measuring element, so that the data detected by the thermistor is greatly deviated. SUMMARY

[0004] In view of the problems in the prior art, the present application provides a thermistor special for a bullet train to solve the above technical problems.

[0005] In order to achieve the above application purposes, one technical solution provided by the present application is as follows:

[0006] A thermistor special for a bullet train, comprising a connector and a temperature measuring element, wherein the temperature measuring element is connected with the connector, an insulating pipe is provided outside the temperature measuring element, one end of the insulating pipe is connected with the connector, the other end of the insulating pipe is connected with a protective cover, a ventilation passage is arranged on the protective cover, the front end of the temperature measuring element is located in the ventilation passage, and the rear end of the temperature measuring element is fixed on the insulating pipe.

[0007] Preferably, a plurality of air holes communicating with the inside of the protective cover are arranged on the protective cover in the circumferential direction.

[0008] Preferably, the ventilation holes are strip-shaped holes parallel to the temperature measuring element, and the support bodies are formed between adjacent strip-shaped holes; the inner side of the protective cover is provided with an internal thread near one end of the insulating tube, the insulating tube is provided with an external thread near one end of the protective cover, the internal thread of the protective cover is provided with a partition plate on the side away from the insulating tube, and the partition plate is provided with a central hole for the temperature measuring element to pass through; the protective cover is provided with a semicircular baffle on one side, one end of the semicircular baffle is connected with the partition plate, and the other end is connected with a semicircular flow guide plate; the protective cover is provided with a semicircular blocking body on the other side, one end of the semicircular blocking body away from the insulating tube is integrally arranged with the protective cover, and the other end of the semicircular blocking body has a spacing with the partition plate; the semicircular blocking body and the semicircular baffle are connected as a whole, so that the semicircular blocking body and the inner side of the semicircular baffle form a cylindrical space, and the front end of the temperature measuring element is located in the cylindrical space.

[0009] Preferably, the end of the semicircular flow guide plate away from the semicircular baffle is connected with the corresponding support body, and the connection position is located in the middle of the support body.

[0010] Preferably, the semicircular blocking body and the semicircular baffle are both provided with inclined portions at the position of the end of the cylindrical space away from the insulating tube, the two inclined portions form a circular truncated cone-shaped channel at the end of the cylindrical space away from the insulating tube, and the diameter of the end of the circular truncated cone-shaped channel near the insulating tube is smaller than the diameter of the other end.

[0011] Preferably, the semicircular blocking body is provided with an inclined surface on the side facing away from the cylindrical space, and the distance between the end of the inclined surface near the insulating tube and the cylindrical space is smaller than the distance between the other end of the inclined surface and the cylindrical space.

[0012] Preferably, the insulating tube is filled with a colloid, and the temperature measuring element is adhered in the insulating tube through the colloid.

[0013] Preferably, the connector comprises a connector body and a pin fixed in the connector body, and the temperature measuring element is connected with the corresponding pin through a wire.

[0014] When the special thermistor for a motor car is used, the connector can be fixed on the motor car so that the ventilation channel corresponds to the air outlet of the air conditioner. In this way, the protective cover protects the temperature measuring element outside the temperature measuring element, preventing large impurities mixed in the airflow blown out of the air outlet of the air conditioner from directly colliding with the temperature measuring element of the thermistor, thereby preventing damage to the temperature measuring element. The airflow blown out of the air conditioner can directly contact the temperature measuring element through the ventilation channel, and the data deviation detected by the thermistor is small. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The figure shows the overall structure of a thermistor for motor vehicles according to the present invention;

[0016] Figure 2 Shown Figure 1 A schematic structural diagram of a connector;

[0017] Figure 3 Shown Figure 1 A schematic diagram of the front structure of the protective cover;

[0018] Figure 4 Shown Figure 1 A schematic diagram of the back structure of the protective cover;

[0019] Figure 5 Shown Figure 3 AA sectional view of the protective cover, for the sake of convenience, the temperature measuring element is shown in the figure;

[0020] Figure 6 Shown Figure 5 BB cross-sectional view of the protective cover;

[0021] Figure 7 Shown Figure 5 CC cross-sectional view of the protective cover;

[0022] In the accompanying drawings:

[0023] Insulating tube 1, connector 2, connector body 2-1, pin 2-2, partition 3, center hole 3-1, temperature measuring element 4, colloid 5, protective cover 6, strip hole 6-1, support body 6-2, external thread 6-3, semicircular baffle 7, semicircular guide plate 8, semicircular blocking body 9, inclined surface 9-1, cylindrical space 10. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] For examples, see Figures 1-7 The embodiment of the present application provides a motor vehicle-specific thermistor, comprising a connector 2 and a temperature measuring element 4, wherein the temperature measuring element is connected to the connector. In this embodiment, the connector can use an existing connector structure, such as Figure 2The connector structure in the embodiment includes a connector body 2-1 and a pin 2-2 fixed in the connector body, the temperature measuring element is connected to the corresponding pin through a wire; the temperature measuring element is provided with an insulating tube 1, one end of the insulating tube is connected to the connector, and the other end of the insulating tube is connected to a protective cover 6, a ventilation channel is provided on the protective cover, the front end of the temperature measuring element is located in the ventilation channel, and the rear end of the temperature measuring element is fixed to the insulating tube. In this embodiment, a paraffin tube can be used as the insulating sleeve, and the temperature measuring element can be fixed by filling the paraffin tube with glue to form a colloid 5, and the temperature measuring element is bonded to the insulating tube through the colloid. Generally, glass glue can be used as the colloid. In the present application, the ventilation channel can be a plurality of vents circumferentially arranged on the protective cover and connected to the interior of the protective cover.

[0026] When the above-mentioned EMU-specific thermistor is used, the connector can be fixed on the EMU so that the ventilation channel corresponds to the air outlet of the air conditioner. In this way, the protective cover protects the temperature measuring element on the outside of the temperature measuring element, preventing large debris mixed in the air flow blown out of the air outlet of the air conditioner from directly colliding with the temperature measuring element of the thermistor and causing damage to the temperature measuring element; the air flow blown out by the air conditioner can directly contact the temperature measuring element through the ventilation channel, and the data deviation detected by the thermistor is small.

[0027] In actual use, the air outlet of the air conditioner is in direct contact with the temperature measuring element only on the windward side. Therefore, there will be a large deviation between the actual temperatures of the leeward side and the windward side of the temperature measuring element, which cannot meet people's requirements for higher accuracy. For this reason, the applicant has also made the following design: the vent is a strip hole 6-1, the strip hole is parallel to the temperature measuring element, and a support body 6-2 is formed between adjacent strip holes; the inner side of the protective cover is provided with an internal thread at one end close to the insulating tube, and the end of the insulating tube close to the protective cover is provided with an external thread 6-3 that matches the internal thread, and a partition 3 is provided in the protective cover on the side of the internal thread away from the insulating tube. The partition is provided with a central hole 3-1 for the temperature measuring element to pass through; a semicircular baffle 7 is provided on one side of the protective cover, one end of the semicircular baffle is connected to the partition, and the other end is connected to a semicircular guide plate 8; a semicircular blocking body 9 is provided on the other side of the protective cover, the end of the semicircular blocking body away from the insulating tube is integrally provided with the protective cover, and the other end of the semicircular blocking body is spaced apart from the partition to form an air outlet; the semicircular blocking body and the semicircular baffle are connected as a whole so that a cylindrical space 10 is formed inside the semicircular blocking body and the semicircular baffle, and the front end of the temperature measuring element is located in the cylindrical space. Figure 5The structure is installed corresponding to the air outlet of the air conditioner, and the airflow of the air outlet of the air conditioner is partially or totally guided through the semicircular guide plate to the left space of the semicircular guide plate and then to the left side of the cylindrical space 10, and the airflow is pushed to the right side until reaching the position of the air outlet hole and then being discharged through the air outlet hole and the corresponding strip-shaped hole. During the process of the airflow being pushed to the right side through the left side of the cylindrical space, the airflow moves along the surface of the temperature measuring element, and the actual temperature of the surface of the temperature measuring element is more uniform, which can meet the requirement of higher accuracy.

[0028] In actual production, the semicircular blocking body is preferably provided with an inclined surface 9-1 on the side facing away from the cylindrical space, and the distance between the end of the inclined surface close to the insulating pipe and the cylindrical space is smaller than the distance between the other end of the inclined surface and the cylindrical space. In this way, the airflow can be rapidly diffused after being discharged from the air outlet.

[0029] In actual production, the end of the semicircular guide plate not connected with the semicircular baffle can be connected with the corresponding support body, and the connection position is located in the middle of the support body. In this way, the semicircular guide plate isolates the space in the protection cover on one side, so that the airflow passing through the guide plate is not easily transferred to the left space to bypass the semicircular guide plate and then discharged through the space outside the air outlet hole and the corresponding strip-shaped hole. Alternatively, a gap can be provided between the end of the semicircular guide plate not connected with the semicircular baffle and the corresponding support body, and the semicircular guide plate is inclined. The end of the semicircular guide plate not connected with the semicircular baffle is located in the right part of the middle of the support body. In this way, the airflow through the cylindrical space can be increased. The airflow channel on the right side of the semicircular guide plate is used to reduce the resistance of the protection cover to the air outlet of the air conditioner.

[0030] It should be noted that the above is only an example of the present application, and as long as a dust blocking structure is provided on the inner side of the shaft protection pipe close to the blade to prevent dust from accumulating between the shaft protection pipe and the shaft, it falls within the inventive concept of the present application.

[0031] It should be noted that references in this specification to "one embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," and the like indicate that the described embodiment may include a particular feature, structure, or characteristic, but not necessarily every embodiment includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

[0032] It should be readily understood that “on,” “above,” and “over” in this disclosure should be interpreted in the broadest manner, such that “on” means not only “directly on something,” but also includes “on something” with intervening features or layers therebetween, and “above” or “over” includes not only the meaning of “above” or “over,” but also includes “above” or “over” with no intervening features or layers therebetween (i.e., directly on something).

[0033] Additionally, spatially relative terms, such as "below," "beneath," "beneath," "above," and the like, may be used herein for ease of description to describe the relationship of one element or feature to other elements or features as depicted in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be otherwise oriented (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0035] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A thermistor for motor vehicles, comprising a connector (2) and a temperature measuring element (4), wherein the temperature measuring element is connected to the connector, and is characterized in that: The temperature measuring element is provided with an insulating tube (1) on its outer sleeve, one end of the insulating tube is connected to the connector, the other end of the insulating tube is connected to a protective cover (6), a ventilation channel is provided on the protective cover, the front end of the temperature measuring element is located in the ventilation channel, and the rear end of the temperature measuring element is fixed to the insulating tube; The protective cover is provided with a plurality of vent holes on its circumference which are in communication with the interior of the protective cover; The vent holes are strip-shaped holes (6-1), the strip-shaped holes are parallel to the temperature measuring element, and a support body (6-2) is formed between adjacent strip-shaped holes; The inner side of the protective cover is provided with an internal thread at one end close to the insulating tube, and the end of the insulating tube close to the protective cover is provided with an external thread (6-3) that matches the internal thread. A partition (3) is provided in the protective cover on a side of the internal thread away from the insulating tube, and a central hole (3-1) for a temperature measuring element to pass through is provided on the partition. A semicircular baffle (7) is provided on one side of the protective cover, one end of the semicircular baffle is connected to the partition, and the other end is connected to a semicircular guide plate (8); A semicircular blocking body (9) is provided on the other side of the protective cover, wherein one end of the semicircular blocking body away from the insulating tube is integrally provided with the protective cover, and a distance is provided between the other end of the semicircular blocking body and the partition; The semicircular blocking body and the semicircular baffle are connected as one body so that a cylindrical space (10) is formed inside the semicircular blocking body and the semicircular baffle, and the front end of the temperature measuring element is located in the cylindrical space.

2. A motor vehicle-specific thermistor according to claim 1, characterized in that: One end of the semicircular guide plate that is not connected to the semicircular baffle is connected to the corresponding support body, and the connection position is located in the middle of the support body.

3. A motor vehicle-specific thermistor according to any one of claims 1-2, characterized in that: The semicircular blocking body and the semicircular baffle are both provided with inclined portions at positions at one end of the cylindrical space away from the insulating tube. The two inclined portions form a truncated cone-shaped channel at the end of the cylindrical space away from the insulating tube. The diameter of the truncated cone-shaped channel at one end close to the insulating tube is smaller than the diameter at the other end.

4. A motor vehicle-specific thermistor according to any one of claims 1-2, characterized in that: The semicircular blocking body is provided with an inclined surface (9-1) on a side facing away from the cylindrical space, and the distance between one end of the inclined surface close to the insulating tube and the cylindrical space is smaller than the distance between the other end of the inclined surface and the cylindrical space.

5. The motor vehicle-specific thermistor according to claim 1, characterized in that: The insulating tube is filled with a colloid (5), and the temperature measuring element is bonded to the insulating tube via the colloid.

6. The motor vehicle-specific thermistor according to claim 1, characterized in that: The connector comprises a connector body (2-1) and plug pins (2-2) fixed in the connector body, and the temperature measuring element is connected to the corresponding plug pins via a wire.

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