Vehicle-mounted motor NTC temperature sensor

Abstract

The invention belongs to the technical field of temperature sensors, and particularly relates to a vehicle-mounted motor NTC temperature sensor which comprises a protective shell, a thermistor and a connecting copper base are arranged in the protective shell, the protective shell is detachably connected with a connecting assembly, and the side, close to the connecting assembly, of the protective shell is fixedly connected with an elastic sealing ring. The side, away from the protective shell, of the connecting assembly is fixedly connected with a Teflon wire, and an auxiliary connecting mechanism and a reinforced sealing mechanism are arranged in the protective shell. According to the vehicle-mounted motor NTC temperature sensor, an auxiliary connecting mechanism is used, a pushing block is moved, the pushing block drives a connecting rod to move, a connector is inserted into a connecting copper pipe, after the pushing block is loosened, under the action of a torsional spring, a telescopic rod is reset, then an inserting block is driven to reset, the connecting rod drives the pushing block to reset, and the inserting block can be inserted into a clamping groove; the connecting cover is fixed, and the device is convenient to mount and dismount.

Description

Technical Field

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

[0002] NTC temperature sensor is a temperature sensitive element based on negative temperature coefficient thermistor. Its working principle is mainly based on the thermal effect, that is, the phenomenon that the resistivity of a material changes under temperature changes. When the temperature rises, the resistance value of the thermistor in the NTC temperature sensor will drop rapidly; when the temperature drops, the resistance value will increase. This characteristic of resistance value changing with temperature enables NTC sensors to be used to measure temperature. At present, in the prior art, NTC temperature sensors are generally connected by welding, which makes it difficult to repair NTC temperature sensors after damage. During the repair process, re-welding may introduce new welding defects, such as loose welding, cold welding, etc. These problems may affect the accuracy and stability of the NTC temperature sensor. At the same time, 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, the welding method often becomes an obstacle, which is not conducive to the flexible adjustment of the equipment. In view of this, the present invention proposes a vehicle-mounted motor NTC temperature sensor. 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 object, the present invention proposes the following technical solutions:

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

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

[0007] A block, the 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 part of which is elastically connected to the bracket via a torsion spring;

[0009] A connecting rod, one end of which is hinged to an insert block, which slides in an inner groove of the protective shell, and the other end of the connecting rod is hinged to a push block. By moving the push block, the push block drives the connecting rod to move, thereby driving the insert block to rise, thereby driving the telescopic rod to move. Under the action of the bracket, both ends of the telescopic rod extend, and the block descends, driving the hinged rod to move, so that the two groups of L-shaped parts open, that is, the two groups of connecting copper tubes are separated, so that the subsequent joints are inserted into the connecting copper tubes and are tightly attached to the connecting copper tubes, 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 a 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 a side of the piston ring close to the connecting rod is fixedly connected to a cross bar, 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 a 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, and 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, so that the elastic sealing ring expands and fits 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 air chamber enters the elastic sealing ring through the ventilation 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, thereby fixing the connecting cover, and then realizing the detachable connection between the connecting cover and the protective shell, which is convenient for the installation and disassembly of the device, so that the device can be quickly disassembled and repaired when maintenance is needed.

[0018] Preferably, the two groups of connecting copper tubes are tightly attached to the outer wall of the joint when they are closed.

[0019] The present invention provides a vehicle-mounted 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 are extended, and the block descends, driving 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 auxiliary connecting mechanisms and enhanced sealing mechanisms, after the connection component and the protective shell of the device 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, so that 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 assembly 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, thereby 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 drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 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 structure of the connection assembly 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 diagram of the auxiliary connection mechanism structure of the present invention;

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

[0030] Figure 7 It is a partial structural schematic 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 groove; 41. connecting cover; 42. groove; 43. positioning groove; 44. card slot; 45. joint; 61. connecting copper tube; 62. L-shaped part; 63. hinged rod; 64. block; 65. guide rod; 66. telescopic rod; 67. bracket; 68. plug-in block; 69. connecting rod; 610. push block; 691. protrusion; 71. air chamber; 72. piston ring; 73. cross bar; 74. ventilation pipe.

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

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work 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, 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 arranged 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, a slide groove 103 is provided on the outer wall of the protective shell 1, and the connection component 4 includes a connection cover 41, 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, a card slot 44 is provided on the positioning groove 43, and a joint 45 is fixedly connected to the side of the connection cover 41 close to the protective shell 1, 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 stability of the connection of the device.

[0036] Further, in order to fix the connecting assembly 4 after it is connected to the protective shell 1, specifically, the auxiliary connecting 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, and 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 about the center line of the connecting copper seat 3, and the outer wall of the L-shaped piece 62 is hinged. There are hinged rods 63, and 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, 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, and 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 plug block 68, and the middle part of the telescopic rod 66 is connected to the bracket 67 through a button The spring elastic connection, one end of the connecting rod 69 is hinged with 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 with the push block 610, and the push block 610 is slidably connected in 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 hinge 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 push 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 push block 610 to reset, and the plug block 68 can be inserted into the slot 44 to fix the connecting cover 41, thereby 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 is 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, so that the block 64 is reset, and then the hinge rod 63 is driven to move, so that the two groups of connecting copper tubes 61 are closed, and then the connecting copper tube 61 and the joint 45 are tightly attached, thereby realizing 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 needed.

[0038] In the 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, the piston in the air chamber 71 is connected with a piston ring 72, the side of the piston ring 72 close to the connecting rod 69 is fixedly connected with a cross bar 73, and the end of the air chamber 71 away from the cross bar 73 is connected with 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 ventilation 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 it is necessary to disassemble the connecting component 4 of the device, 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 maintenance, the pushing block 610 is moved so that the pushing block 610 drives the connecting rod 69 to move, thereby driving the insert block 68 to rise, and the insert block 68 is disengaged from the slot 44, thereby releasing the limiting fixation of the connecting cover 41, and then climbing out of the connecting cover 41.

[0041] It should be noted that the above-mentioned electrical components are all existing technology products, and are selected, installed and debugged by technicians in this field 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 technicians in this field, and their structures and principles can be known by technicians in this field through technical manuals or conventional experimental methods, and 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 component 4 with the protective shell 1. In 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, so that 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 are extended, the block 64 is lowered, and the hinged rod 63 is driven 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 joint 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 to achieve the fixation of the connecting cover 41.

[0043] At the same time, after releasing the push block 610, the plug 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 to enter 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, so that the cross bar 73 drives the piston ring 72 to move rightward, and the air in the air chamber 71 is squeezed into the elastic sealing ring 102, so that the elastic sealing ring 102 expands and fits tightly against the groove 42.

[0044] At the same time, when it is necessary to disassemble and inspect the connecting component 4 and the protective shell 1, the pushing block 610 is moved so that the pushing block 610 drives the connecting rod 69 to move, thereby driving the plug block 68 to rise, and the plug block 68 disengages from the slot 44, thereby releasing the limiting fixation of the connecting cover 41, and then climbing 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, thereby 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 changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied 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 shell (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), a side of the protective shell (1) close to the connecting assembly (4) is fixedly connected to an elastic sealing ring (102), and a side of the connecting assembly (4) away from the protective shell (1) is fixedly connected to a Teflon wire (5), and an auxiliary connecting mechanism (6) and a strengthening sealing mechanism (7) are provided in the protective shell (1), and the auxiliary connecting mechanism (6) comprises: 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 plug block (68), and the middle part of the telescopic rod (66) is elastically connected to the bracket (67) via a torsion spring; A connecting rod (69), one end of which is hinged to an insert block (68), the insert block (68) slides in an inner groove of the protective shell (1), and the other end of which is hinged to a push block (610).

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), wherein the air chamber (71) is provided in the protective shell (1), wherein a piston in the air chamber (71) is connected to a piston ring (72), wherein a side of the piston ring (72) close to the connecting rod (69) is fixedly connected to a cross bar (73), and an end of the air chamber (71) away from the cross bar (73) is connected to a vent pipe (74), and an end of the vent pipe (74) away from the air chamber (71) is 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) is in contact with the cross bar (73), and the gas in the gas chamber (71) compressed by the piston ring (72) enters the elastic sealing ring (102) through the ventilation 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 connection assembly (4) comprises a connection cover (41), a groove (42) is provided on a side of the connection cover (41) close to the protective shell (1), a positioning groove (43) is provided on an outer wall of the connection cover (41), a clamping groove (44) is provided on the positioning groove (43), and a joint (45) is fixedly connected to a side of the connection cover (41) close to the protective shell (1).

9. The vehicle-mounted motor NTC temperature sensor according to claim 8, 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).

10. 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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