A vehicle-mounted motor NTC temperature sensor

Abstract

The present invention belongs to the technical field of temperature sensors, and specifically relates to an on-vehicle motor NTC temperature sensor, comprising a protective housing, an internally disposed thermistor and a connecting copper base, a removable connecting assembly to the protective housing, an elastic sealing ring fixedly connected to the side of the protective housing proximal to the connecting assembly, and a Teflon wire fixedly connected to the side of the connecting assembly distal to the protective housing, and an auxiliary connecting mechanism and a reinforced sealing mechanism provided within the protective housing. This on-vehicle motor NTC temperature sensor utilizes an auxiliary connecting mechanism, wherein a push block is moved, causing the push block to move a connecting rod, and a connector is inserted into a connecting copper tube. After the push block is released, a torsion spring acts to reset the telescopic rod, thereby resetting the insert block, which in turn causes the connecting rod to reset the push block, allowing the insert block to be inserted into a slot, thereby securing the connecting cover and facilitating installation and removal of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of temperature sensors, in particular to an NTC temperature sensor for a vehicle-mounted motor. Background Art

[0002] An NTC temperature sensor is a temperature-sensitive element based on a negative temperature coefficient (NTC) thermistor. Its operating principle is primarily based on the thermistor effect, which is the phenomenon in which the resistivity of a material changes with temperature. When the temperature rises, the resistance of the thermistor in the NTC temperature sensor drops rapidly; when the temperature drops, the resistance increases. This temperature-dependent resistance property makes NTC sensors suitable for measuring temperature. Currently, NTC temperature sensors are typically connected using welding, making them difficult to repair after damage. During repair, re-welding can introduce new welding defects, such as weak welds and cold joints. These problems can affect the accuracy and stability of the NTC temperature sensor. Furthermore, the welding connection method limits the replaceability and modular design of the NTC temperature sensor. When the sensor needs to be quickly replaced or upgraded, welding often becomes an obstacle, hindering the flexible adjustment of the equipment. In view of this, the present invention proposes an NTC temperature sensor for vehicle-mounted motors. Summary of the Invention

[0003] The main purpose of the present invention is to provide a vehicle-mounted motor NTC temperature sensor that can solve the problems raised in the above background technology.

[0004] To achieve the above objectives, the present invention proposes the following technical solutions:

[0005] An on-vehicle motor NTC temperature sensor includes a protective shell, a thermistor and a connecting copper seat are provided inside the protective shell, a connecting assembly is detachably connected to the protective shell, an elastic sealing ring is fixedly connected to the side of the protective shell close to the connecting assembly, and a Teflon wire is fixedly connected to the side of the connecting assembly away from the protective shell. An auxiliary connecting mechanism and a reinforced sealing mechanism are provided in the protective shell, and the auxiliary connecting mechanism includes:

[0006] A connecting copper tube, wherein the connecting copper tube is slidably connected to the outer wall of the connecting copper base, an L-shaped piece is fixedly connected to the outer wall of the connecting copper tube, and a hinged rod is hinged on the outer wall of the L-shaped piece;

[0007] A block is hinged to the hinge rod, the block is penetrated by a guide rod and is slidably connected to the guide rod, and the guide rod is fixedly connected to the inner wall of the protective shell;

[0008] A telescopic rod, one end of which is hinged to the block, the other end of which is hinged to the plug block, and the middle portion of which is elastically connected to the bracket via a torsion spring;

[0009] A connecting rod, one end of the connecting rod is hinged to the plug block, the plug block slides in the inner groove of the protective shell, and the other end of the connecting rod is hinged to the push block. By moving the push block, the push block drives the connecting rod to move, thereby driving the plug block to rise, and thereby driving the telescopic rod to move. Under the action of the bracket, both ends of the telescopic rod extend, the block descends, and drives the hinged rod to move, so that the two groups of L-shaped parts are opened, that is, the two groups of connecting copper tubes are separated, which is convenient for the subsequent joint to be inserted into the connecting copper tube and tightly fit with the connecting copper tube, thereby improving the installation speed of the device and facilitating the installation of the device after maintenance.

[0010] Preferably, the connecting copper tube is a half copper tube, and two groups of connecting copper tubes are provided, and the two groups of connecting copper tubes are symmetrically arranged about the center line of the connecting copper seat.

[0011] Preferably, four groups of hinged rods are provided, and two groups of hinged rods are hinged on the outer wall of each group of L-shaped members, and the two groups of hinged rods hinged on the outer wall of the L-shaped member are arranged in parallel.

[0012] Preferably, a protrusion is fixedly connected to the side of the connecting rod away from the telescopic rod.

[0013] Preferably, the enhanced sealing mechanism includes an air chamber, which is provided in a protective shell, and a piston in the air chamber is connected to a piston ring, and the piston ring is fixedly connected to a cross bar on the side close to the connecting rod, and an end of the air chamber away from the cross bar is connected to a vent pipe, and an end of the vent pipe away from the air chamber is connected to an elastic sealing ring, and the connecting rod is driven to move by the pushing block, so that the protrusion gradually moves away from the cross bar, and then the gas in the elastic sealing ring can enter the air chamber, so that the cross bar and the piston ring move to the left. After releasing the pushing block, the telescopic rod is reset under the action of the torsion spring, and then the plug block is reset, so that the connecting rod drives the pushing block to reset, and the protrusion abuts the cross bar again, so that the cross bar drives the piston ring to move to the right, squeezing the air in the air chamber into the elastic sealing ring, causing the elastic sealing ring to expand and fit tightly against the groove, thereby improving the sealing effect of the device.

[0014] Preferably, the protrusion abuts against the cross bar, and the gas in the piston ring compression chamber enters the elastic sealing ring through the vent pipe. After the pushing block is released, the telescopic rod is reset, and the connecting rod drives the pushing block to move, so that the protrusion gradually moves away from the cross bar, and then the gas in the elastic sealing ring can enter the air chamber, and the elastic sealing ring shrinks, reducing the friction with the connecting cover, thereby reducing the wear of the elastic sealing ring and facilitating the disassembly of the connecting assembly.

[0015] Preferably, a positioning block is fixedly connected to the inner wall of the protective shell, a sliding groove is provided on the outer wall of the protective shell, and the pushing block is slidably connected in the sliding groove.

[0016] Preferably, the connecting component includes a connecting cover, a groove is provided on the side of the connecting cover close to the protective shell, a positioning groove is provided on the outer wall of the connecting cover, a card slot is provided on the positioning groove, and a joint is fixedly connected to the side of the connecting cover close to the protective shell. Through the use of the positioning groove and the positioning block, the connecting component can be stably positioned when connected to the protective shell, thereby ensuring stability during connection.

[0017] Preferably, the elastic sealing ring matches the groove, the positioning groove matches the positioning block, and the card slot matches the plug block. After the torsion spring drives the telescopic rod to reset, the plug block is reset, and then the plug block can be inserted into the card slot to fix the connecting cover, thereby realizing a detachable connection between the connecting cover and the protective shell, facilitating the installation and disassembly of the device, so that the device can be quickly disassembled and repaired when maintenance is required.

[0018] Preferably, the two groups of connecting copper tubes are in close contact with the outer wall of the joint when they are closed.

[0019] The present invention provides an on-vehicle motor NTC temperature sensor, which has the following beneficial effects:

[0020] (1) Through the use of the auxiliary connecting mechanism, by moving the push block, the push block drives the connecting rod to move, and then drives the plug block to rise, and then drives the telescopic rod to move. Under the action of the bracket, the two ends of the telescopic rod extend, the block drops, and drives the hinged rod to move, so that the two groups of L-shaped parts are opened, that is, the two groups of connecting copper tubes are separated, which is convenient for the joint to be inserted into the connecting copper tube. After loosening the push block, under the action of the torsion spring, the telescopic rod is reset, and then the plug block is reset, so that the connecting rod drives the push block to reset, and the plug block can be inserted into the slot to fix the connecting cover, which is convenient for the installation and disassembly of the device, so that the device can be quickly disassembled and repaired when it needs to be repaired.

[0021] (2) Through the use of the auxiliary connection mechanism and the enhanced sealing mechanism, after the connection component of the device and the protective shell are installed, the protrusion abuts the cross bar, so that the cross bar drives the piston ring to move to the right, squeezing the air in the air chamber into the elastic sealing ring, causing the elastic sealing ring to expand and fit tightly against the groove, thereby improving the sealing effect of the device. At the same time, when it is necessary to disassemble the connection component of the device, the connecting rod is driven to move by the push block, so that the protrusion gradually moves away from the cross bar, and then the gas in the elastic sealing ring can enter the air chamber, the elastic sealing ring shrinks, reducing the friction with the connection cover, thereby reducing the wear of the elastic sealing ring, and facilitating the disassembly of the connection component.

[0022] (3) By using the positioning groove and the positioning block, when the connection component is connected to the protective shell, the positioning block can be accurately inserted into the positioning groove of the connection cover, so that the joint can be stably inserted into the connecting copper tube, ensuring the stability of the connection of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0024] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0025] Figure 2 It is a schematic diagram of a partial explosion structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the connection assembly structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the internal structure of the protective shell of the present invention;

[0028] Figure 5 This is a schematic structural diagram of the auxiliary connection mechanism of the present invention;

[0029] Figure 6 For the present invention Figure 4 Schematic diagram of the structure of A in the middle;

[0030] Figure 7 It is a partial structural diagram of the auxiliary connection mechanism of the present invention.

[0031] In the figure: 1. Protective shell; 2. Thermistor; 3. Connecting copper seat; 4. Connecting assembly; 5. Teflon wire; 6. Auxiliary connecting mechanism; 7. Strengthening sealing mechanism; 101. Positioning block; 102. Elastic sealing ring; 103. Slide; 41. Connecting cover; 42. Groove; 43. Positioning groove; 44. Card slot; 45. Joint; 61. Connecting copper tube; 62. L-shaped piece; 63. Articulated rod; 64. Block; 65. Guide rod; 66. Telescopic rod; 67. Bracket; 68. Insert block; 69. Connecting rod; 610. Push block; 691. Protrusion; 71. Air chamber; 72. Piston ring; 73. Cross bar; 74. Vent pipe.

[0032] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0033] 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.

[0034] See also Figure 1-Figure 7 The present invention proposes an on-vehicle motor NTC temperature sensor, comprising a protective shell 1, a thermistor 2 and a connecting copper seat 3 are arranged inside the protective shell 1, the protective shell 1 is detachably connected to a connecting component 4, an elastic sealing ring 102 is fixedly connected to the side of the protective shell 1 close to the connecting component 4, and a Teflon wire 5 is fixedly connected to the side of the connecting component 4 away from the protective shell 1, and an auxiliary connecting mechanism 6 and a reinforced sealing mechanism 7 are provided in the protective shell 1.

[0035] In an embodiment of the present invention, in order to enable the connection component 4 to be stably docked when connected to the protective shell 1, specifically, a positioning block 101 is fixedly connected to the inner wall of the protective shell 1, and a sliding groove 103 is provided on the outer wall of the protective shell 1. The connection component 4 includes a connection cover 41, and a groove 42 is provided on the side of the connection cover 41 close to the protective shell 1. A positioning groove 43 is provided on the outer wall of the connection cover 41, and a card slot 44 is provided on the positioning groove 43. A joint 45 is fixedly connected to the side of the connection cover 41 close to the protective shell 1, and the elastic sealing ring 102 matches the groove 42, and the positioning groove 43 matches the positioning block 101. Through the use of the positioning groove 43 and the positioning block 101, when the connection component 4 is connected to the protective shell 1, the positioning block 101 can be accurately inserted into the positioning groove 43 of the connection cover 41, thereby ensuring the stable connection of the device.

[0036] Furthermore, in order to enable the connection component 4 to be fixed after being connected to the protective shell 1, specifically, the auxiliary connection mechanism 6 includes a connecting copper tube 61, a block 64, a telescopic rod 66 and a connecting rod 69. The connecting copper tube 61 is slidably connected to the outer wall of the connecting copper seat 3. An L-shaped piece 62 is fixedly connected to the outer wall of the connecting copper tube 61. The connecting copper tube 61 is a half copper tube, and the connecting copper tube 61 is provided with two groups. The two groups of connecting copper tubes 61 are symmetrically arranged with respect to the center line of the connecting copper seat 3. The outer wall of the L-shaped piece 62 is hinged. There are hinged rods 63, and there are four groups of hinged rods 63. Two groups of hinged rods 63 are hinged on the outer wall of each L-shaped member 62. The two groups of hinged rods 63 hinged on the outer wall of the L-shaped member 62 are arranged in parallel. The block 64 is hinged to the hinged rod 63. The block 64 is penetrated by the guide rod 65 and is slidably connected to the guide rod 65. The guide rod 65 is fixedly connected to the inner wall of the protective shell 1. One end of the telescopic rod 66 is hinged to the block 64, and the other end of the telescopic rod 66 is hinged to the insert block 68. The middle part of the telescopic rod 66 is connected to the bracket 67 through a button. The spring is elastically connected, one end of the connecting rod 69 is hinged to the plug block 68, the card slot 44 matches the plug block 68, the plug block 68 slides in the inner groove of the protective shell 1, and the other end of the connecting rod 69 is hinged to the push block 610, and the push block 610 is slidably connected to the slide groove 103. By moving the push block 610, the push block 610 slides in the slide groove 103, and then the push block 610 drives the connecting rod 69 to move, and then drives the plug block 68 to rise, and then drives the telescopic rod 66 to move. Under the action of the bracket 67, the telescopic rod The two ends of 66 are extended, and the block 64 descends, driving the hinged rod 63 to move, so that the two groups of L-shaped parts 62 are opened, that is, the two groups of connecting copper tubes 61 are separated, so that the connector 45 is inserted into the connecting copper tube 61. After releasing the pushing block 610, under the action of the torsion spring, the telescopic rod 66 is reset, and then the plug block 68 is reset, so that the connecting rod 69 drives the pushing block 610 to reset, and the plug block 68 can be inserted into the card slot 44, thereby fixing the connecting cover 41 and completing the fixation of the connecting component 4 in the connection with the protective shell 1.

[0037] Furthermore, when the two groups of connecting copper tubes 61 are closed, they are tightly attached to the outer wall of the joint 45. After the two groups of connecting copper tubes 61 are separated, there will be no friction when the joint 45 is inserted into the connecting copper tube 61, thereby ensuring the stability of the insertion of the joint 45. At the same time, after loosening the push block 610, the telescopic rod 66 is reset, which resets the block 64, thereby driving the hinge rod 63 to move, so that the two groups of connecting copper tubes 61 are closed, and the connecting copper tube 61 is tightly attached to the joint 45, thereby achieving a stable connection between the connecting copper tube 61 and the joint 45. In this way, the installation and disassembly of the device can be facilitated, so that the device can be quickly disassembled and repaired when maintenance is required.

[0038] In an embodiment of the present invention, in order to improve the sealing performance of the device after the connecting assembly 4 is connected to the protective shell 1, specifically, the side of the connecting rod 69 away from the telescopic rod 66 is fixedly connected with a protrusion 691, and the enhanced sealing mechanism 7 includes an air chamber 71, the air chamber 71 is opened in the protective shell 1, and the piston in the air chamber 71 is connected to a piston ring 72. The side of the piston ring 72 close to the connecting rod 69 is fixedly connected to a cross bar 73, and the end of the air chamber 71 away from the cross bar 73 is connected to a vent pipe 74, and the vent pipe 74 is away from the air chamber 71. One end of the chamber 71 is connected to the elastic sealing ring 102, the protrusion 691 abuts against the cross bar 73, and the piston ring 72 compresses the gas in the air chamber 71 into the elastic sealing ring 102 through the vent pipe 74. After the connection component 4 and the protective shell 1 are installed, the protrusion 691 abuts against the cross bar 73, so that the cross bar 73 drives the piston ring 72 to move to the right, squeezing the air in the air chamber 71 into the elastic sealing ring 102, causing the elastic sealing ring 102 to expand and fit tightly against the groove 42, thereby improving the sealing effect of the device.

[0039] Furthermore, when the connecting component 4 of the device needs to be disassembled, the connecting rod 69 is driven to move by pushing the block 610, so that the protrusion 691 gradually moves away from the cross bar 73, and then the gas in the elastic sealing ring 102 can enter the air chamber 71, and the elastic sealing ring 102 shrinks, reducing the friction with the connecting cover 41, thereby reducing the wear of the elastic sealing ring 102 and facilitating the disassembly of the connecting component 4.

[0040] In addition, when the connecting assembly 4 and the protective shell 1 are disassembled for inspection, the pushing block 610 is moved, so that the pushing block 610 drives the connecting rod 69 to move, and then drives the insert block 68 to rise, and the insert block 68 is disengaged from the slot 44, thereby releasing the limit fixation of the connecting cover 41, and then climbing out of the connecting cover 41.

[0041] It should be noted that the above electrical components are all existing technology products. Those skilled in the art will select, install and complete the circuit debugging work according to the needs of use to ensure that all electrical appliances can work normally. The components are all universal standard parts or components known to those skilled in the art. Their structures and principles are known to those skilled in the art through technical manuals or conventional experimental methods. No specific restrictions are made here.

[0042] When in use, first align the positioning groove 43 with the positioning block 101, and then connect the connecting assembly 4 with the protective shell 1. During this process, the positioning block 101 can be accurately inserted into the positioning groove 43 of the connecting cover 41, and then the pushing block 610 is moved to make the pushing block 610 slide in the sliding groove 103, thereby causing the pushing block 610 to drive the connecting rod 69 to move, thereby driving the inserting block 68 to rise, thereby driving the telescopic rod 66 to move. Under the action of the bracket 67, the two ends of the telescopic rod 66 extend, the block 64 descends, and drives the hinged rod 63 to move, so that the two groups of L-shaped parts 62 are opened, that is, the two groups of connecting copper tubes 61 are separated, which is convenient for the connector 45 to be inserted into the connecting copper tube 61. After releasing the pushing block 610, the telescopic rod 66 is reset under the action of the torsion spring, thereby driving the inserting block 68 to reset, so that the connecting rod 69 drives the pushing block 610 to reset, and the inserting block 68 can be inserted into the card slot 44, thereby fixing the connecting cover 41.

[0043] At the same time, after releasing the push block 610, the insert block 68 and the connecting rod 69 are reset, the protrusion 691 abuts against the cross bar 73, and the piston ring 72 compresses the gas in the air chamber 71 into the elastic sealing ring 102 through the vent pipe 74. After the connection assembly 4 and the protective shell 1 are installed, the protrusion 691 abuts against the cross bar 73, causing the cross bar 73 to drive the piston ring 72 to move rightward, squeezing the air in the air chamber 71 into the elastic sealing ring 102, causing the elastic sealing ring 102 to expand and fit tightly against the groove 42.

[0044] At the same time, when the connecting assembly 4 and the protective shell 1 need to be disassembled for inspection and maintenance, the pushing block 610 is moved, so that the pushing block 610 drives the connecting rod 69 to move, and then drives the plug block 68 to rise, and the plug block 68 disengages from the slot 44, thereby releasing the limit fixation on the connecting cover 41, and then climbs out of the connecting cover 41. During this process, the pushing block 610 drives the connecting rod 69 to move, so that the protrusion 691 gradually moves away from the cross bar 73, and then the gas in the elastic sealing ring 102 can enter the air chamber 71, and the elastic sealing ring 102 shrinks, reducing the friction with the connecting cover 41, and thus reducing the wear of the elastic sealing ring 102.

[0045] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A vehicle-mounted motor NTC temperature sensor, comprising a protective housing (1), characterized in that: The protective shell (1) is provided with a thermistor (2) and a connecting copper seat (3) inside. The protective shell (1) is detachably connected to a connecting assembly (4). The connecting assembly (4) includes a connecting cover (41). A groove (42) is provided on the side of the connecting cover (41) close to the protective shell (1). A positioning groove (43) is provided on the outer wall of the connecting cover (41). A clamping groove (44) is provided on the positioning groove (43). A connector (45) is fixedly connected to the side of the connecting cover (41) close to the protective shell (1). An elastic sealing ring (102) is fixedly connected to the side of the protective shell (1) close to the connecting assembly (4). A Teflon wire (5) is fixedly connected to the side of the connecting assembly (4) away from the protective shell (1). An auxiliary connecting mechanism (6) and a reinforced sealing mechanism (7) are provided in the protective shell (1). The auxiliary connecting mechanism (6) includes: A connecting copper tube (61), wherein the connecting copper tube (61) is slidably connected to the outer wall of the connecting copper seat (3), an L-shaped piece (62) is fixedly connected to the outer wall of the connecting copper tube (61), and a hinge rod (63) is hinged to the outer wall of the L-shaped piece (62); A block (64), the block (64) being hinged to the hinge rod (63), the block (64) being penetrated by a guide rod (65) and being slidably connected to the guide rod (65), and the guide rod (65) being fixedly connected to the inner wall of the protective shell (1); A telescopic rod (66), one end of the telescopic rod (66) is hinged to the block (64), the other end of the telescopic rod (66) is hinged to the insert block (68), and the middle portion of the telescopic rod (66) is elastically connected to the bracket (67) via a torsion spring; and a connecting rod (69), one end of the connecting rod (69) being hinged to the insert block (68), the insert block (68) sliding in the inner groove of the protective shell (1), and the other end of the connecting rod (69) being hinged to the push block (610); Among them, by moving the pushing block (610), the pushing block (610) slides in the slide groove (103), and then the pushing block (610) drives the connecting rod (69) to move, and then drives the plug block (68) to rise, and then drives the telescopic rod (66) to move. Under the action of the bracket (67), the two ends of the telescopic rod (66) extend, the block (64) descends, and drives the hinge rod (63) to move, so that the two groups of L-shaped members (62) are opened, that is, the two groups of connecting members are The copper tubes (61) are separated, making it easier for the connector (45) to be inserted into the connecting copper tube (61). After the pushing block (610) is released, the telescopic rod (66) is reset under the action of the torsion spring, thereby driving the inserting block (68) to reset, and the connecting rod (69) drives the pushing block (610) to reset. The inserting block (68) can be inserted into the card slot (44), thereby achieving the fixation of the connecting cover (41), and further completing the fixation of the connection assembly (4) to the protective shell (1).

2. The vehicle-mounted motor NTC temperature sensor according to claim 1, characterized in that: The connecting copper tube (61) is a half copper tube, and two groups of connecting copper tubes (61) are provided. The two groups of connecting copper tubes (61) are symmetrically arranged around the center line of the connecting copper seat (3).

3. The vehicle-mounted motor NTC temperature sensor according to claim 1, characterized in that: Four groups of hinged rods (63) are provided, and two groups of hinged rods (63) are hinged on the outer wall of each group of L-shaped members (62), and the two groups of hinged rods (63) hinged on the outer wall of the L-shaped member (62) are arranged in parallel.

4. The vehicle-mounted motor NTC temperature sensor according to claim 1, characterized in that: A protrusion (691) is fixedly connected to the side of the connecting rod (69) away from the telescopic rod (66).

5. The vehicle-mounted motor NTC temperature sensor according to claim 4, characterized in that: The reinforced sealing mechanism (7) comprises an air chamber (71), the air chamber (71) being provided in the protective shell (1), a piston in the air chamber (71) being connected to a piston ring (72), a side of the piston ring (72) close to the connecting rod (69) being fixedly connected to a cross bar (73), an end of the air chamber (71) away from the cross bar (73) being connected to a vent pipe (74), and an end of the vent pipe (74) away from the air chamber (71) being connected to an elastic sealing ring (102).

6. The vehicle-mounted motor NTC temperature sensor according to claim 5, characterized in that: The protrusion (691) contacts the crossbar (73), and the piston ring (72) compresses the gas in the air chamber (71) into the elastic sealing ring (102) through the vent pipe (74).

7. The vehicle-mounted motor NTC temperature sensor according to claim 1, characterized in that: A positioning block (101) is fixedly connected to the inner wall of the protective shell (1), a sliding groove (103) is provided on the outer wall of the protective shell (1), and the pushing block (610) is slidably connected in the sliding groove (103).

8. The vehicle-mounted motor NTC temperature sensor according to claim 7, characterized in that: The elastic sealing ring (102) matches the groove (42), the positioning groove (43) matches the positioning block (101), and the clamping groove (44) matches the inserting block (68).

9. The vehicle-mounted motor NTC temperature sensor according to claim 1, characterized in that: When the two groups of connecting copper tubes (61) are closed together, they are in close contact with the outer wall of the joint (45).

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