CN218180010U - Speed and temperature integrated sensor and gearbox - Google Patents

Abstract

The utility model discloses a speed and temperature integral type sensor and gearbox relates to gearbox technical field. Speed and temperature integral type sensor includes casing, speed-sensing subassembly and temperature-sensing subassembly, and the casing is including the end of pegging graft, and speed-sensing subassembly and temperature-sensing subassembly all set up in the casing, and speed-sensing subassembly includes hall element, magnet, first wire terminal and first ground terminal, and hall element and magnet magnetism are inhaled and are connected, and first wire terminal and first ground terminal all are connected with hall element electricity, and stretch out through two of them ports in four ports respectively. The temperature sensing assembly comprises a platinum resistor, a conducting strip, a second wire terminal and a second grounding terminal, a notch is formed in the shell, the sensing surface of the platinum resistor is communicated with the outside through the notch, the conducting strip is used for connecting the sensing surface and the second grounding terminal, the second wire terminal and the second grounding terminal are electrically connected with the platinum resistor, and the other two ports of the four ports stretch out respectively.

Description

Speed and temperature integrated sensor and gearbox

Technical Field

The utility model relates to a gearbox technical field especially relates to a speed and temperature integral type sensor and gearbox.

Background

The speed and temperature sensors used in the current market are assembled by using Hall elements and temperature sensitive elements separately, most of the speed and temperature sensors adopt the mode that the temperature sensitive elements are in direct contact with detected media so as to output resistance signals, and the Hall elements acquire voltage or current signals of tooth crests and tooth roots of gears in rotation through the Hall principle. The sensor is connected with the ECU through a lead so as to transmit signals to the ECU, and the ECU collects temperature and rotating speed signals so as to more effectively control the vehicle.

The temperature sensitive element of the sensor in the prior art usually has two fixing modes, one is fixed in the sensor by encapsulation, and the other is fixed on the surface of the sensor, so that the sensing area of the temperature sensitive element is exposed outside the product. The prior art has the following application defects: when the temperature sensitive element is fixed in the sensor, the heat transfer inefficiency need can only conduct the heat to the temperature sensitive element after a period of time, leads to slow response time, can't in time restrain when leading to the gearbox intensification faster. When the temperature sensitive element is fixed on the surface of the sensor, the temperature sensitive element can only bear electrostatic discharge of less than 6KV (air discharge) due to miniaturization and weak antistatic capability, and the temperature sensitive element has the risk of electrostatic breakdown in a factory assembly environment and personnel assembly.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a speed and temperature integral type sensor and gearbox, this speed and temperature integral type sensor can avoid the gearbox that temperature-sensing subassembly response time leads to slowly to heat up too fast and can't restrain, has improved antistatic effect moreover, has reduced the risk that temperature-sensing subassembly was punctured by the static.

To achieve the purpose, the utility model adopts the following technical proposal:

an integrated speed and temperature sensor comprising:

the shell comprises a plugging end, and the plugging end is provided with four ports;

the speed sensing assembly is arranged in the shell and comprises a Hall element, a magnet, a first lead terminal and a first grounding terminal, the Hall element is connected with the magnet in a magnetic attraction manner, the first lead terminal and the first grounding terminal are both electrically connected with the Hall element, and the first lead terminal and the first grounding terminal respectively extend out through two of the four ports;

the temperature sensing assembly is arranged in the shell and comprises a platinum resistor, a conducting strip, a second lead terminal and a second grounding terminal, a notch is formed in the shell, the sensing surface of the platinum resistor is communicated with the outside through the notch, the conducting strip is used for connecting the sensing surface and the second grounding terminal, the second lead terminal and the second grounding terminal are electrically connected with the platinum resistor, and the second lead terminal and the second grounding terminal respectively extend out of the other two ports.

As an alternative to the speed and temperature integrated sensor, a bracket is arranged in the housing, the bracket comprises a first accommodating cavity and a second accommodating cavity, the first accommodating cavity is located at one end of the bracket and is used for accommodating the speed sensing assembly, and the first lead terminal and the first grounding terminal extend to the other end of the bracket and extend out of the housing; the opening that the second held the chamber is located the upper surface of support is used for holding the temperature-sensing subassembly, the breach corresponds the second holds the chamber setting, so that the response face communicates with the external world.

As an alternative to the integrated speed and temperature sensor, the temperature sensing assembly is secured to the second receiving cavity by epoxy.

As an alternative of the speed and temperature integrated sensor, the upper surface of the support is further provided with a cover body, the support is provided with a first positioning structure, the first positioning structure is located at one end, away from the first accommodating cavity, of the second accommodating cavity, a second positioning structure is arranged on the cover body, and the first positioning structure is matched with the second positioning structure to position the cover body.

As an alternative of the speed and temperature integrated sensor, a first clamping structure is arranged on the support and is located at one end, far away from the first accommodating cavity, of the second accommodating cavity, a second clamping structure is further arranged on the cover body, and the first clamping structure is matched with the second clamping structure to clamp the cover body to the support.

As an alternative of the speed and temperature integrated sensor, the first accommodating cavity comprises a front cavity and a rear cavity, the Hall element is arranged in the front cavity, a supporting piece is arranged between the front cavity and the rear cavity and used for supporting the Hall element, the magnet is arranged in the rear cavity, a supporting plate and a first clamping hook are arranged in the rear cavity, and the supporting plate and the first clamping hook are oppositely arranged so that the magnet is clamped between the supporting plate and the first clamping hook.

As an alternative to the integrated speed and temperature sensor, the surface of the platinum resistor is coated with blue glaze.

As an alternative to the integrated speed and temperature sensor, the housing is made of plastic and covers the outside of the bracket.

As an alternative to the integrated speed and temperature sensor, the housing is provided with a connecting element, through which the housing is connected to the sensed medium.

As an alternative of the speed and temperature integrated sensor, a sealing groove is formed in the periphery of the shell, the sealing groove is formed in one side, close to the notch, of the connecting piece, a sealing ring is arranged in the sealing groove, and the shell is connected with the detected medium in a sealing mode through the sealing ring.

The gearbox comprises the speed and temperature integrated sensor according to any one of the above schemes, a box body of the gearbox is provided with a connecting port, and the shell is connected with the box body through the connecting port.

The utility model has the advantages that:

the utility model provides a speed and temperature integral type sensor through all setting up speed response subassembly and temperature-sensing subassembly in the casing, assembles the sensor of integral type for detect speed and temperature simultaneously. The connection is inhaled to hall element and magnet magnetism among the speed-sensing subassembly, utilizes the voltage or the current signal of gear tooth top and tooth root when the hall principle gathers the gear rotation, and first wire terminal stretches out casing transmission information through the port, and first ground terminal stretches out casing ground connection through the port. The platinum resistor is used as the temperature sensing element, the temperature sensing assembly has the advantages of high precision, quick response, good stability and high pressure resistance, and the sensing surface of the platinum resistor is communicated with the outside through the notch on the shell and can be in direct contact with the detected medium, so that the thermal response speed of the temperature sensing assembly is effectively improved. Meanwhile, the sensing surface of the platinum resistor and the second grounding terminal are connected through the conducting strip, so that the platinum resistor is prevented from being subjected to electrostatic breakdown, and the rejection rate of the speed and temperature integrated sensor is reduced. The utility model provides a speed and temperature integral type sensor has improved thermal response speed effectively, has improved the antistatic ability of temperature-sensing subassembly simultaneously, can bear within 15KV (air discharge) electrostatic discharge, has reduced the assembly disability rate of speed and temperature integral type sensor.

The utility model provides a gearbox, foretell speed and temperature integral type sensor install in the connector of the box of gearbox for temperature and gear speed in the detection box body. The speed and temperature integrated sensor effectively improves the thermal response speed, avoids too fast temperature rise of the gearbox and cannot inhibit the gearbox, and improves the lubricating and cooling efficiency of the gearbox, thereby prolonging the service life of the gearbox. And the antistatic capacity of the temperature sensing assembly is improved, and the scrapping number of the speed and temperature integrated sensor is reduced, so that the temperature and the gear rotating speed in the gearbox can be effectively detected.

Drawings

FIG. 1 is a schematic structural diagram of an integrated speed and temperature sensor according to an embodiment of the present invention;

FIG. 2 is a side view of an integrated speed and temperature sensor provided by an embodiment of the present invention;

FIG. 3 isbase:Sub>A sectional view taken along line A-A of FIG. 2;

fig. 4 is a schematic structural diagram of a speed sensing assembly and a temperature sensing assembly according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a hidden housing of an integrated speed and temperature sensor according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of a speed sensing assembly and a temperature sensing assembly in a rack according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a bracket according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a cover according to an embodiment of the present invention.

In the figure:

1. a housing; 11. a plug-in end; 111. a first port; 112. a second port; 113. a third port; 114. a fourth port; 12. a notch; 13. a connecting member; 14. a metal ring;

2. a speed sensing component; 21. a Hall element; 22. a magnet; 23. a first wire terminal; 24. a first ground terminal;

3. a temperature sensing component; 31. a platinum resistor; 32. a conductive sheet; 33. a second wire terminal; 34. a second ground terminal;

4. a support; 41. a first accommodating chamber; 411. a second hook; 412. a first hook; 42. a second accommodating chamber; 421. a platinum resistor mounting base; 4211. an inclined bottom surface; 4212. a retaining wall; 4213. a stopper; 43. a first positioning structure;

5. epoxy resin;

6. a cover body; 61. a second positioning structure; 62. a second clamping structure;

7. and (5) sealing rings.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner.

In the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected", "connected" and "fixed" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1 to 4, the present embodiment provides an integrated speed and temperature sensor, which includes a housing 1, a speed sensing component 2, and a temperature sensing component 3, where the housing 1 includes a plugging end 11, and the plugging end 11 is provided with four ports; speed-sensing subassembly 2 and temperature-sensing subassembly 3 all set up in casing 1, and speed-sensing subassembly 2 includes hall element 21, magnet 22, first wire terminal 23 and first ground terminal 24, and hall element 21 and magnet 22 magnetism are inhaled and are connected, and first wire terminal 23 and first ground terminal 24 all are connected with hall element 21 electricity, and first wire terminal 23 and first ground terminal 24 stretch out through two of them ports in four ports respectively. The temperature sensing assembly 3 comprises a platinum resistor 31, a conducting strip 32, a second wire terminal 33 and a second grounding terminal 34, a notch 12 is formed in the shell 1, the sensing surface of the platinum resistor 31 is communicated with the outside through the notch 12, the conducting strip 32 is used for connecting the sensing surface and the second grounding terminal 34, the second wire terminal 33 and the second grounding terminal 34 are electrically connected with the platinum resistor 31, and the second wire terminal 33 and the second grounding terminal 34 extend out through the other two ports of the four ports respectively.

The four ports provided at the insertion end 11 of the housing 1 are a first port 111, a second port 112, a third port 113 and a fourth port 114, respectively, the first wire terminal 23 and the first ground terminal 24 extend out of the housing 1 from the second port 112 and the third port 113, respectively, and the second wire terminal 33 and the second ground terminal 34 extend out of the housing 1 from the first port 111 and the fourth port 114, respectively.

Two first pins are arranged on the hall element 21, and the two first pins are respectively welded with the first wire terminal 23 and the first grounding terminal 24 so as to realize the electrical connection of the hall element 21 with the first wire terminal 23 and the first grounding terminal 24. Two second pins are disposed on the platinum resistor 31, and the two second pins are respectively welded to the second wire terminal 33 and the second ground terminal 34, so as to electrically connect the platinum resistor 31 to the second wire terminal 33 and the second ground terminal 34.

The first lead terminal 23 and the second lead terminal 33 are both electrically connected with the control unit, the first lead terminal 23 is used for outputting voltage or current signals of tooth crests and tooth roots of the Hall element 21 collected through a Hall principle when the gear rotates to the control unit, the second lead terminal 33 is used for outputting the temperature of a detected medium sensed by the sensing surface of the platinum resistor 31 to the control unit, and the first grounding terminal 24 and the second grounding terminal 34 are both grounded to prevent electric shock.

The Hall element 21 and the magnet 22 are connected in a magnetic attraction mode, voltage or current signals of an addendum and a dedendum of the gear are collected when the gear rotates by adopting a Hall principle and are output to the control unit, and the control unit calculates the rotating speed of the gear according to the received voltage or current signals.

The platinum resistor 31 is used as a temperature sensing element, and the platinum resistor 31 is formed by processing a platinum wire through a complex process, and has the advantages of high precision, quick response, good stability and high voltage resistance. The sensing surface of the platinum resistor 31 is communicated with the outside through the notch 12 of the shell 1, so that the sensing surface is in direct contact with the detected medium, and the thermal response speed is improved.

All there is static on the assembly environment of mill and assembly personnel, speed and temperature integral type sensor is when the assembly, because platinum resistance 31's response face and external intercommunication, antistatic effect is weak, generally can only bear and be less than 6KV (air discharge) electrostatic discharge, for preventing that platinum resistance 31 from being punctured by the static, be connected response face and second ground terminal 34 through conducting strip 32, platinum resistance 31 can bear 15KV (air discharge) within electrostatic discharge, platinum resistance 31's antistatic effect has been improved, the assembly disability rate of speed and temperature integral type sensor has been reduced.

The conductive sheet 32 is an ESD (electrostatic Discharge) conductive sheet to protect the platinum resistor 31 from electrostatic breakdown.

By arranging both the speed sensing assembly 2 and the temperature sensing assembly 3 in the housing 1, an integrated sensor is assembled for detecting speed and temperature simultaneously. Hall element 21 and magnet 22 among the speed-sensing subassembly 2 are inhaled to magnetism and are connected, utilize the voltage or the current signal of hall principle collection gear tooth top and tooth root when rotatory, and first wire terminal 23 stretches out casing 1 transmission information through the port, and first ground terminal 24 stretches out casing 1 ground connection through the port. The platinum resistor 31 is used as a temperature sensing element, so that the temperature sensing assembly has the advantages of high precision, quick response, good stability and high voltage resistance, and the sensing surface of the platinum resistor 31 is communicated with the outside through the notch 12 on the shell 1 and can be in direct contact with a detected medium, so that the thermal response speed of the temperature sensing assembly 3 is effectively improved. Meanwhile, the sensing surface of the platinum resistor 31 and the second grounding terminal 34 are connected through the conducting strip 32, so that the platinum resistor 31 can be prevented from being subjected to electrostatic breakdown, and the rejection rate of the speed and temperature integrated sensor is reduced. The speed and temperature integrated sensor provided by the embodiment effectively improves the thermal response speed, improves the antistatic capacity of the temperature sensing component 3, can bear the electrostatic discharge within 15KV (air discharge), and reduces the assembly rejection rate of the speed and temperature integrated sensor.

As an alternative to the integrated speed and temperature sensor, the surface of the platinum resistor 31 is coated with blue glaze. The mechanical strength, the thermal stability, the antistatic strength and the corrosion resistance of the platinum resistor 31 can be enhanced by coating the blue glaze, the gas corrosion can be prevented, and the breakdown risk can be reduced.

As shown in fig. 5-7, as an alternative to the integrated speed and temperature sensor, a bracket 4 is disposed in the housing 1, the bracket 4 includes a first accommodating cavity 41 and a second accommodating cavity 42, the first accommodating cavity 41 is located at one end of the bracket 4 and is used for accommodating the speed sensing assembly 2, and the first lead terminal 23 and the first ground terminal 24 extend out of the housing 1 to the other end of the bracket 4; the opening that the second held the chamber 42 is located the upper surface of support 4 for hold temperature-sensing subassembly 3, breach 12 correspond the second and hold the chamber 42 setting, so that the response face communicates with the external world.

Through installing speed-sensing subassembly 2 and temperature-sensing subassembly 3 respectively in the different intracavity that holds, realize the partition in the space, avoid installing speed-sensing subassembly 2 and temperature-sensing subassembly 3 jointly in casing 1, work for a long time or receive external force striking back, speed-sensing subassembly 2's first pin and temperature-sensing subassembly 3's second pin have mutual interference's risk.

As an alternative to the integrated speed and temperature sensor, the housing 1 is made of plastic and is wrapped around the outside of the bracket 4. The housing 1 is injection molded. After the speed sensing assembly 2 and the temperature sensing assembly 3 are installed on the support 4, the shell 1 is formed in an injection molding mode and wrapped on the outer side of the support 4.

It should be noted that the hall element 21 and the magnet 22 do not need to be exposed out of the housing 1, and the plastic cannot block the conduction of the magnetic force, so that the hall element 21 and the magnet 22 can collect voltage or current signals of the tooth top and the tooth bottom of the gear during the rotation of the gear, which are also collected when the hall element 21 and the magnet 22 are installed in the housing 1.

Optionally, the holder 4 is also made of plastic, the holder 4 made of plastic having an insulating effect.

As an alternative of the speed and temperature integrated sensor, the first accommodating cavity 41 includes a front cavity and a rear cavity, the hall element 21 is disposed in the front cavity, a support member is disposed between the front cavity and the rear cavity, the support member is used for supporting the hall element 21, the magnet 22 is disposed in the rear cavity, a support plate and a first hook 412 are disposed in the rear cavity, the support plate and the first hook 412 are disposed oppositely, so that the magnet 22 is clamped between the support plate and the first hook 412, and the magnet 22 is magnetically attracted and connected with the hall element 21 through the support member.

The first chamber 41 that holds is the cavity, and including four lateral walls, the preceding lateral wall of first chamber 41 that holds is seted up to the preceding chamber, and the preceding lateral wall holds the lateral wall that the chamber 42 was held to the second for first chamber 41 that holds, and the back lateral wall holds chamber 41 and the second common lateral wall of chamber 42 for first. In order to fix the hall element 21, a front cavity is provided to fit the shape of the hall element 21, and the lower end of the front cavity penetrates through the front side wall, so that the hall element 21 is placed in the front cavity. The supporting piece comprises a second clamping hook 411 and two supporting arms arranged on two sides of the second clamping hook 411, the hooking end of the second clamping hook 411 is located below and used for hooking the lower end face of the Hall element 21, and the two supporting arms play a supporting role on the side wall of the Hall element 21 so as to fix the Hall element 21 in the front cavity. The backup pad is located the lower extreme in back chamber for support magnet 22's lower terminal surface, and the backup pad is located between support arm and first trip 412, and the end of colluding of first trip 412 is located the top, is used for catching on magnet 22's up end, and the backup pad is used for supporting magnet 22's lower terminal surface. The two first hooks 412 and the two support plates are symmetrically arranged on two opposite sides of the magnet 22. Since the support 4 is made of plastic, the plastic cannot block the conduction of the magnetic force, and therefore, the support cannot block the hall element 21 and the magnet 22 from attracting each other. The first wire terminal 23 and the first ground terminal 24 extend from below the first accommodation chamber 41 to the other end of the holder 4 to protrude out of the housing 1 through the insertion end 11 of the housing 1.

One side of the second receiving cavity 42 penetrates the upper surface of the bracket 4 to form an opening for facilitating the placement of the temperature sensing assembly 3. A platinum resistor mounting seat 421 is provided in the second accommodating chamber 42, and the platinum resistor 31 is fixed by the platinum resistor mounting seat 421. The platinum resistor mounting seat 421 includes an inclined bottom 4211, a stopper 4212 is disposed at a lower end of the inclined bottom 4211, stoppers 4213 are disposed at both sides of the inclined bottom 4211, the platinum resistor 31 is placed on the inclined bottom 4211, and the stopper 4212 and the stoppers 4213 at both sides limit movement of the platinum resistor 31. Two first guide grooves are symmetrically arranged on the retaining wall 4212, two second guide grooves are symmetrically arranged on the side wall of the second accommodating cavity 42 far away from the first accommodating cavity 41, the second wire terminal 33 extends to the other end of the support 4 through the first guide groove and the second guide groove corresponding to the second wire terminal, and the second grounding terminal 34 extends to the other end of the support 4 through the first guide groove and the second guide groove corresponding to the second wire terminal to extend out of the shell 1 through the inserting end 11 of the shell 1.

As shown in fig. 7 and 8, as an alternative of the speed and temperature integrated sensor, the upper surface of the support 4 is further provided with a cover 6, the support 4 is provided with a first positioning structure 43 and a first clamping structure, the first positioning structure 43 and the first clamping structure are both located at one end of the second accommodating cavity 42, which is far away from the first accommodating cavity 41, the cover 6 is provided with a second positioning structure 61 and a second clamping structure 62, and the first positioning structure 43 and the second positioning structure 61 are matched to position the cover 6. The first and second latch structures 62 cooperate to latch the cover 6 to the bracket 4.

The first positioning structure 43 includes two first positioning grooves and two second positioning grooves, the second positioning structure 61 includes two first positioning blocks and two second positioning blocks, and the two first positioning grooves and the two first positioning blocks are correspondingly matched with each other one by one to limit the movement of the cover 6 along the first direction. The two second positioning grooves and the two second positioning blocks are correspondingly matched one by one to limit the movement of the cover body 6 along a second direction, and the first direction is perpendicular to the second direction. The first clamping structure and the second clamping structure 62 are matched to limit the movement of the cover body 6 along the third direction. The third direction is perpendicular to the first direction and the second direction. The first clamping structure is a clamping block, the second clamping structure 62 is a clamping hook, and the hooking end of the clamping hook is located below and used for clamping the lower end face of the clamping block to limit the cover body 6 to move upwards.

After the platinum resistor 31 is mounted in the second accommodating chamber 42, the second lead terminal 33 and the second ground terminal 34 are fixed by the lid 6, and then the second lead terminal 33 and the second ground terminal 34 are respectively welded to the two second pins of the platinum resistor 31. Meanwhile, the cover body 6 can be used as a glue sealing surface when the shell body 1 is injection molded.

In order to prevent the platinum resistor 31 from being released by vibration and external impact, the temperature sensing assembly 3 is fixed to the second receiving cavity 42 by the epoxy resin 5. The epoxy resin 5 wraps the other side surfaces of the platinum resistor 31 except the sensing surface to fix the platinum resistor 31 without affecting the exposure of the sensing surface. After the cover 6 is installed, the liquid epoxy resin 5 is injected above the platinum resistor 31 through a dispensing device, and the liquid epoxy resin 5 is cured after being heated to wrap the platinum resistor 31. It should be noted that, an injection space of the epoxy resin 5 is left on the second accommodating cavity 42 and the side of the second accommodating cavity 42 away from the first accommodating cavity 41 on the bracket 4, and the injection space is filled with the liquid epoxy resin 5 to wrap the platinum resistor 31 except for the sensing surface, so as to prevent the platinum resistor 31 from loosening.

As an alternative to the integrated speed and temperature sensor, the housing 1 is provided with a connecting member 13, and is connected with the detected medium through the connecting member 13. Since the speed and temperature integrated sensor needs to be installed on the detected medium to detect the speed and temperature of the detected medium, the connecting piece 13 is arranged on the shell 1 and integrally formed with the shell 1, and the connecting piece 13 does not need to be additionally arranged to be connected with the detected medium.

One end of the connecting piece 13 is sleeved on the shell 1, the other end is provided with a connecting hole, and the fastening bolt penetrates through the connecting hole to be connected with the detected medium.

Because connecting piece 13 and 1 an organic whole setting of casing are the plastic material, and the plastic material is easily worn and torn, influences speed and temperature integral type sensor and is detected the reliability that the medium is connected. Optionally, a metal ring 14 is arranged in the connecting hole, and the fastening bolt is connected with the detected medium through the metal ring 14, so that the reliability of the connection of the speed and temperature integrated sensor and the detected medium is ensured.

In the present embodiment, the metal ring 14 is an iron ring, but in other embodiments, the metal ring 14 may be made of other metal materials.

As an alternative of the speed and temperature integrated sensor, a sealing groove is formed in the periphery of the shell 1, the sealing groove is formed in one side, close to the notch 12, of the connecting piece 13, a sealing ring 7 is arranged in the sealing groove, and the shell 1 is connected with a detected medium in a sealing mode through the sealing ring 7. When speed and temperature integral type sensor with be connected by the medium, the one end that is provided with breach 12 on the casing 1 is located by the medium inside for platinum resistance 31 can be with by the direct contact of medium, improves the sensitivity that the temperature detected. Meanwhile, in order to ensure that the internal temperature of the detected medium is not influenced by the external temperature, the sealing ring 7 is connected with the detected medium, and the sealing property is ensured.

This embodiment still provides a gearbox, including foretell speed and temperature integral type sensor, is provided with the connector on the box of gearbox, and casing 1 passes through the connector and is connected with the box.

One end of the speed and temperature integrated sensor extends into the box body through a connecting port, and the shell 1 is connected with the connecting port in a sealing mode through a sealing ring 7. Fastening bolts are screwed with the case through the metal ring 14 to fix the speed and temperature integrated sensor to the case.

The speed and temperature integrated sensor provided by the embodiment is applied to a gearbox and used for detecting the temperature and the gear rotating speed in a box body of the gearbox, the first wire terminal 23 and the second wire terminal 33 are electrically connected with a control unit of a vehicle using the gearbox, and the control unit receives temperature and rotating speed signals in the gearbox so as to more effectively control the vehicle.

Of course, in other embodiments, the speed and temperature integrated sensor can also be applied to other detected media requiring simultaneous speed and temperature acquisition.

In the transmission provided by the embodiment, the speed and temperature integrated sensor is mounted on a connecting port of the box body and used for detecting the temperature and the gear rotating speed in the transmission. The speed and temperature integrated sensor effectively improves the thermal response speed, avoids too fast temperature rise of the gearbox and cannot inhibit the gearbox, and improves the lubricating and cooling efficiency of the gearbox, thereby prolonging the service life of the gearbox. And the antistatic capacity of the temperature sensing component 3 is improved, and the scrapping quantity of the speed and temperature integrated sensor is reduced, so that the temperature and the gear rotating speed in the gearbox can be effectively detected.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims (11)

1. An integrated speed and temperature sensor, comprising:

the shell (1) comprises a plugging end (11), and the plugging end (11) is provided with four ports;

the speed sensing assembly (2) is arranged in the shell (1), the speed sensing assembly (2) comprises a Hall element (21), a magnet (22), a first lead terminal (23) and a first grounding terminal (24), the Hall element (21) is magnetically attracted with the magnet (22), the first lead terminal (23) and the first grounding terminal (24) are electrically connected with the Hall element (21), and the first lead terminal (23) and the first grounding terminal (24) respectively extend out of two of the four ports;

the temperature sensing assembly (3) is arranged in the shell (1), the temperature sensing assembly (3) comprises a platinum resistor (31), a conducting strip (32), a second wire terminal (33) and a second grounding terminal (34), a notch (12) is formed in the shell (1), a sensing surface of the platinum resistor (31) is communicated with the outside through the notch (12), the conducting strip (32) is used for connecting the sensing surface with the second grounding terminal (34), the second wire terminal (33) and the second grounding terminal (34) are electrically connected with the platinum resistor (31), and the second wire terminal (33) and the second grounding terminal (34) are respectively extended out through the other two ports of the four ports.

2. The integrated speed and temperature sensor according to claim 1, wherein a support (4) is arranged in the housing (1), the support (4) comprises a first accommodating cavity (41) and a second accommodating cavity (42), the first accommodating cavity (41) is located at one end of the support (4) and is used for accommodating the speed sensing assembly (2), and the first lead terminal (23) and the first grounding terminal (24) extend to the other end of the support (4) and extend out of the housing (1); the opening of the second accommodating cavity (42) is located on the upper surface of the support (4) and is used for accommodating the temperature sensing assembly (3), and the notch (12) corresponds to the second accommodating cavity (42) so that the sensing surface is communicated with the outside.

3. An integrated speed and temperature sensor according to claim 2, wherein the temperature sensing assembly (3) is secured to the second receiving cavity (42) by means of an epoxy (5).

4. The integrated speed and temperature sensor according to claim 2, wherein a cover (6) is further disposed on the upper surface of the support (4), a first positioning structure (43) is disposed on the support (4), the first positioning structure (43) is located at one end of the second accommodating cavity (42) far away from the first accommodating cavity (41), a second positioning structure (61) is disposed on the cover (6), and the first positioning structure (43) and the second positioning structure (61) cooperate to position the cover (6).

5. The integrated speed and temperature sensor according to claim 4, wherein a first clamping structure is arranged on the support (4), the first clamping structure is located at one end, far away from the first accommodating cavity (41), of the second accommodating cavity (42), a second clamping structure (62) is further arranged on the cover body (6), and the first clamping structure and the second clamping structure (62) are matched to clamp the cover body (6) to the support (4).

6. The integrated speed and temperature sensor according to claim 2, wherein the first accommodating cavity (41) comprises a front cavity and a rear cavity, the hall element (21) is arranged in the front cavity, a support member is arranged between the front cavity and the rear cavity and used for supporting the hall element (21), the magnet (22) is arranged in the rear cavity, a support plate and a first hook (412) are arranged in the rear cavity, and the support plate and the first hook (412) are oppositely arranged so as to clamp the magnet (22) between the support plate and the first hook (412).

7. The integrated speed and temperature sensor according to claim 1, wherein the surface of the platinum resistor (31) is coated with blue glaze.

8. The integrated speed and temperature sensor according to claim 2, wherein the housing (1) is made of plastic and covers the outside of the support (4).

9. An integrated speed and temperature sensor according to any one of claims 1 to 8, wherein the housing (1) is provided with a connecting member (13) through which the housing (13) is connected to the medium to be detected.

10. The integrated speed and temperature sensor according to claim 9, wherein a sealing groove is formed in the periphery of the housing (1), the sealing groove is formed in one side, close to the notch (12), of the connecting piece (13), a sealing ring (7) is arranged in the sealing groove, and the housing (1) is connected with the detected medium in a sealing mode through the sealing ring (7).

11. Gearbox, characterized in that it comprises an integrated speed and temperature sensor according to any of claims 1 to 10, the gearbox being provided with a connection port on its casing, through which connection port the housing (1) is connected to the casing.

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