CN212583801U

CN212583801U - Automatic start-stop system for automobile water pump

Info

Publication number: CN212583801U
Application number: CN202021010548.1U
Authority: CN
Inventors: 吴寅
Original assignee: Wuxi Yinyi Auto Parts Manufacture Co ltd
Current assignee: Wuxi Yinyi Auto Parts Manufacture Co ltd
Priority date: 2020-06-04
Filing date: 2020-06-04
Publication date: 2021-02-23
Anticipated expiration: 2030-06-04

Abstract

The utility model discloses an automatic system that opens and stop of automobile water pump relates to automobile water pump technical field. Including automobile water pump assembly and fixed mounting temperature switch assembly on engine shell, temperature switch assembly includes the heat conduction cover, be located the memory alloy spring in the heat conduction cover, first extension spring, the slider, the ejector pin, loading board and current conducting plate, be equipped with the top cap on the opening of heat conduction cover, the symmetry is equipped with two electrically conductive pins on the top cap, the memory alloy spring sets up in the heat conduction cover, first extension spring sets up the center at the memory alloy spring, first extension spring one end fixed connection is on the interior diapire of heat conduction cover, the other end is equipped with the slider, the ejector pin sets up on the slider, the loading board activity sets up in the heat conduction cover and outside towards the ejector pin, the current conducting plate sets up on the loading board. The utility model discloses the automatic system that opens of opening of water pump makes the water pump assembly restart when waiting engine temperature to reach operating temperature, shortens the time that the engine reaches best operating temperature and economizes on energy consumption.

Description

Automatic start-stop system for automobile water pump

Technical Field

The utility model relates to an automobile water pump technical field, concretely relates to automatic system that opens and stop of automobile water pump.

Background

The existing automobile water pump assembly comprises a pump body, a rotating shaft, a water seal, an impeller, a belt pulley and the like, and the working principle is as follows: when the engine is started, the water pump assembly works by the rotation of the crankshaft of the automobile engine and the belt pulley on the water pump body driven by the belt pulley and the belt on the crankshaft. The existing automobile water pump assembly is started simultaneously with the starting of an engine, when the engine is just started or started for a short time, the temperature in a cooling water jacket of the engine is low, a cylinder does not reach the optimal working temperature, and the temperature reduction of the engine is reduced as much as possible. Therefore, in the period of time, the automobile water pump assembly and the fan do idle work, thereby not only wasting energy consumption, but also prolonging the time of the engine reaching the optimal working temperature.

Therefore, it is necessary to provide an automatic start/stop system for a water pump of an automobile to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem who solves: the automatic starting and stopping system for the automobile water pump is provided, so that the water pump assembly is in a standby state when an automobile engine is just started, and is started again when the temperature of the engine is close to high temperature, the time for the engine to reach the optimal working temperature is shortened, and energy consumption is saved.

In order to solve the technical problem, the utility model discloses a as follows technical scheme be: an automatic start-stop system of an automobile water pump comprises an automobile water pump assembly for pumping water, wherein the automobile water pump assembly comprises a water pump body arranged on a water outlet of an engine shell and a motor fixedly arranged on the water pump body; the automatic starting and stopping system of the automobile water pump further comprises a temperature-sensitive switch assembly fixedly installed in the installation threaded hole, the temperature-sensitive switch assembly comprises a heat conduction sleeve, a memory alloy spring, a first extension spring, a sliding part, a push rod, a bearing plate and a conductive plate, the memory alloy spring is located in the heat conduction sleeve, the heat conduction sleeve is fixedly connected in the installation threaded hole, a top cover is arranged on an opening of the heat conduction sleeve, two conductive pins are symmetrically arranged on the top cover, the memory alloy spring is arranged in the heat conduction sleeve and is close to the inner wall of the heat conduction sleeve, the first extension spring is arranged in the center of the memory alloy spring, one end of the first extension spring is fixedly connected to the inner bottom wall of the heat conduction sleeve, the other end of the first extension spring is provided with the sliding part, the push rod is arranged on the sliding part and faces the other side of the first extension spring, the bearing plate is movably arranged in, the conductive plate is disposed on the carrier plate and faces one side of the top cover.

Furthermore, the inner bottom wall of the heat conduction sleeve is provided with a first spring seat, one side of the sliding piece is provided with a second spring seat corresponding to the first spring seat, and two ends of the first extension spring are respectively fixed on the first spring seat and the second spring seat.

Furthermore, a limit ring is arranged on the side wall of the bottom of the heat conduction sleeve.

Furthermore, a limiting bearing ring is fixedly arranged on the inner side wall of the heat conduction sleeve and faces the inner side of the bearing plate, two second extension springs which are symmetrically distributed are fixedly connected to one side of the limiting bearing ring, and the other ends of the two second extension springs are fixedly connected to the bearing plate respectively.

Further, the heat conduction sleeve extends into the inner cavity of the water jacket of the engine through a mounting threaded hole on the engine shell.

Furthermore, the outer side surface of the heat conduction sleeve is provided with an external thread which is correspondingly matched with the installation threaded hole.

Furthermore, the memory alloy spring is a CuZnAl memory alloy spring.

Furthermore, the temperature-sensing switch assembly, the motor and the power supply unit of the automobile are connected into an openable circuit, the conductive pin penetrates through the top cover, a wire connected in the closed circuit is arranged at one end of the conductive pin extending out of the top cover, and the other end of the conductive pin extends into the heat conduction sleeve.

Compared with other methods, the utility model, beneficial technological effect is: the utility model relates to an automatic start-stop system of an automobile water pump, a motor is independently arranged on a water pump body in an automobile water pump assembly, a temperature-sensing switch assembly is arranged on the engine shell, a heat-conducting sleeve in the temperature-sensing switch assembly extends into the inner cavity of the water jacket of the engine, when the engine is close to high temperature after idling is finished, heat is conducted to the memory alloy spring in the heat conduction sleeve through the heat conduction sleeve, the memory alloy spring reaches the phase change temperature and extends, the sliding part is pushed to the bearing plate, and finally the current conducting plate on the bearing plate is driven to abut against the two current conducting pins, so that an electric loop formed by connecting the temperature-sensitive switch assembly, the motor and a power supply unit of the automobile is closed and conducted, the motor runs to drive the water pump body to run to cool the engine, the phenomenon that a fan of the water pump assembly does useless work when the engine is just started or works in an idling mode is avoided, energy consumption is saved, and the time of the idling time of the engine, namely.

Drawings

The present invention will be further explained with reference to the drawings and examples.

In the figure: FIG. 1 is an assembly view of the automatic start/stop system and the engine of the automobile water pump of the present invention;

FIG. 2 is a schematic structural diagram of a temperature-sensitive switch assembly;

FIG. 3 is a schematic diagram of the temperature switch assembly of FIG. 2 in a triggered state;

FIG. 4 is a circuit diagram of the automatic start-stop system of the automobile water pump of the present invention;

in the figure: 1. an engine case; 11. installing a threaded hole; 12. a water jacket cavity; 2. a temperature sensitive switch assembly; 21. a heat conducting sleeve; 211. a first spring seat; 212. a limiting ring; 213. a limiting bearing ring; 22. a memory alloy spring; 23. a first extension spring; 24. a slider; 241. a top rod; 25. a carrier plate; 251. a conductive plate; 26. a top cover; 261. a conductive pin; 27. a second extension spring; 3. an automotive water pump assembly; 31. a water pump body; 32. a motor; 4. a wire; 5. a power supply unit.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the present application, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

An automatic start-stop system for an automobile water pump as shown in fig. 1 mainly comprises an automobile water pump assembly 3 installed at a water outlet of an engine shell 1 and a temperature-sensitive switch assembly 2 installed on the engine shell 1.

As shown in fig. 1, the water pump assembly 3 for a vehicle includes a water pump body 31 connected to the engine case 1 and a motor 32 fixedly installed on the water pump body 31 so that the water pump body 31 can be driven by the motor 32 alone.

Specifically, as shown in fig. 2, a mounting threaded hole 11 is formed in a position, corresponding to the temperature-sensitive switch assembly 2, of the engine case 1, and the temperature-sensitive switch assembly 2 is mounted in the mounting threaded hole 11; the temperature-sensing switch assembly 2 comprises a heat-conducting sleeve 21, a memory alloy spring 22 positioned in the heat-conducting sleeve 21, a first extension spring 211 fixed in the middle of the memory alloy spring 22, a sliding part 24 movably connected in the heat-conducting sleeve 21, a push rod 241 fixed on the sliding part 24, a conductive plate 251 capable of axially reciprocating along the push rod 241, and a top cover 26 and a conductive pin 261 arranged at an opening of the heat-conducting sleeve 21.

In this embodiment, the heat conducting sleeve 21 is a cylindrical structure with an open top and a closed bottom, the material of the heat conducting sleeve is preferably metal with excellent heat conductivity, an external thread is arranged on the outer side wall of the heat conducting sleeve 21 and at a position corresponding to the mounting threaded hole 11, a limit ring 212 is fixedly arranged on the side wall close to the bottom in the heat conducting sleeve 21, a first spring seat 211 is fixedly arranged at the center position of the bottom of the heat conducting sleeve 21, and a limit bearing ring 213 is fixedly arranged on the inner side wall of the heat conducting sleeve 21 and at a position close to the opening of the heat conducting sleeve 21; a bearing plate 25 is arranged on one side of the limiting bearing ring 213 facing the opening of the heat conducting sleeve 21, two second extension springs 27 are symmetrically arranged on one side of the limiting bearing ring 213 from left to right, one ends of the two second extension springs 27 are fixedly connected to the limiting bearing ring 213, and the other ends of the second extension springs 27 are fixedly connected to the bearing plate 25; the conductive plate 251 is made of a conductive metal material and is fixedly connected to a side of the loading plate 25 facing away from the stopper loading ring 213.

In the present embodiment, the slider 24 has a disk-like structure and is in clearance fit with the inner side wall of the heat conductive sleeve 21, the second spring seat 242 disposed opposite to the first spring seat 211 is fixedly disposed on the side surface of the slider 24, the first tension spring 23 is located between the slider 24 and the inner bottom wall of the heat conductive sleeve 21, and both ends of the first tension spring 23 are respectively fixed to the first spring seat 211 and the second spring seat 242.

The push rod 241 is fixedly attached to the slider 24 and is centered toward one side of the carrier plate 25.

In the present embodiment, the memory alloy spring 22 is disposed between the sliding member 24 and the limiting ring 212, and one end of the memory alloy spring 22 abuts against the limiting ring 212, and the other end abuts against the sliding member 24, and for easy temperature conduction, the outer side wall of the memory alloy spring 22 abuts against the inner side wall of the heat conducting sleeve 21; the normal operating temperature of the engine is 80 ℃ to 90 ℃, the memory alloy spring 22 in the embodiment is a CuZnAl memory alloy spring, and the memory alloy spring is obtained by the prior art such as: the phase transition temperature of the memory alloy spring 22 is adjusted to be the same as the optimum working temperature of the engine after idling by heat treatment, change of alloy components, and an apparatus and a method for controlling the phase transition temperature of the shape memory alloy disclosed in patent No. CN201210236546.8 (this embodiment aims to protect and explain the shape and structure of each component in the technical scheme, so the CuZnAl memory alloy spring is not described in much detail in the prior art), and the phase transition temperature of the memory alloy spring 22 in this embodiment is 80 ℃.

The top cover 26 is fixedly connected to the opening of the heat conduction sleeve 21, and the top cover 26 and the heat conduction sleeve 21 can be fixed in a screwing mode, so that the top cover 26 is convenient to detach for maintenance; the further conductive pins 261 are provided with two conductive pins 261 facing the conductive plate 251, the two conductive pins 261 are symmetrically distributed and fixed on the top cover 26 at intervals, each conductive pin 261 penetrates from one side of the top cover 26 to the other side of the top cover 26, and the position where each conductive pin 261 extends to the outer side of the top cover 26 is independently connected with a wire 4; referring to fig. 4, in the present embodiment, the car power supply unit 5, the motor 32 and the temperature-sensitive switch assembly 2 form a loop connected by the wire 4.

In the present embodiment, the carrier plate 25 is made of an insulating material, so as to prevent the carrier plate from conducting electricity and consuming electric energy.

The spacing ring 212 arranged in the heat conducting sleeve 21 can shorten the distance between the memory alloy spring 22 and the bottom of the heat conducting sleeve 21, so that the memory alloy spring 22 can be selected to be shorter, and the manufacturing cost of the memory alloy spring 22 is reduced.

The following description of the working process of the automatic start and stop system of the disc automobile water pump is combined with the accompanying drawings:

when the engine is just started, the temperature of the engine water, namely the temperature of the coolant in the water jacket inner cavity 12, is lower than the preset temperature of 80 ℃, as shown in fig. 2, the second extension spring 27 is in a contracted state due to an original state, the conductive plate 251 at the top of the second extension spring is far away from the two conductive pins 261, meanwhile, the memory alloy spring 22 does not reach the phase transition temperature, due to the characteristics of the memory alloy spring 22, the second extension spring contracts when the temperature is lower than the phase transition temperature of 80 ℃, and simultaneously, the memory alloy spring 22 keeps in a contracted state under the tensile force action of the first extension spring 23, so that the sliding piece 24 is located at a position far away from the conductive plate 251, at this time, the temperature-sensitive switch assembly 2 is in a closed state.

After the engine idles for a period of time, the temperature in the water jacket inner cavity 12 rises and reaches the phase transition temperature of the memory alloy spring 22, namely when the temperature required by the normal operation of the engine is 80 ℃, the heat conducting sleeve 21 is heated and transfers heat energy to the memory alloy spring 22, as shown in fig. 3, the temperature of the memory alloy spring 22 rises to 80 ℃, so that the memory alloy spring 22 undergoes phase transition and unfolds in a tensile state, the first stretching spring 23 is forced to stretch and push the sliding part 24 to move towards the direction of the conducting plate 251 until the sliding part 24 abuts against the limiting bearing ring 213, at this time, the ejector rod 241 on the sliding part 24 jacks up the bearing plate 25, so that the conducting plate 251 on the bearing plate 25 simultaneously touches the two conducting pins 261, the two conducting plates 261 are connected through the conducting plate 251, the electric loop is conducted, and the.

When the engine is turned off and the temperature of the water jacket inner cavity 12 is reduced to be lower than 80 ℃, the memory alloy spring 22 loses the phase change capability, the first extension spring 23 drives the extrusion memory alloy spring 22 to contract through the elastic restoring force, the sliding piece 24 moves and retracts in the direction away from the bearing plate 25, the ejector rod 241 is separated from the bearing plate 25, the second extension spring 27 rebounds to drive the bearing plate 25 and the conducting plate 251 on the bearing plate 25 to be far away from the conducting pin 261, the electric circuit is disconnected, and the automobile water pump assembly 3 is turned off.

The utility model relates to an automatic start-stop system of automobile water pump, the motor 32 is independently arranged on the water pump body 31 in the automobile water pump assembly 3, the temperature-sensing switch assembly 2 is arranged on the engine shell 1, the heat conduction sleeve 21 in the temperature-sensing switch assembly 2 extends to the water jacket inner cavity 12 of the engine, when the temperature approaches to the preset 80 ℃ after the engine finishes idling, the heat is conducted to the memory alloy spring 22 positioned in the heat conduction sleeve 21 through the heat conduction sleeve 21, the memory alloy spring 22 reaches phase transition temperature to extend, the sliding part 24 is pushed to the bearing plate 25, finally the current-conducting plate 251 on the bearing plate 25 is pressed against the two current-conducting pins 261, the electric circuit formed by connecting the temperature-sensing switch assembly 2, the motor 32 and the power supply unit 5 of the automobile is conducted, the motor 32 operates to drive the water pump body 31 to run for cooling circulation of the engine, the automobile water pump assembly 3 is prevented from doing useless work when the engine is started, the energy consumption is saved, and the time for the idling time of the engine to reach the optimal working temperature is shortened.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides an automatic system that stops of automobile water pump, is including automobile water pump assembly (3) that is used for the pump water, automobile water pump assembly (3) are including installing water pump body (31) and motor (32) of fixed mounting on water pump body (31) on engine shell (1) delivery port, its characterized in that: the automobile water pump automatic start-stop system is characterized in that a mounting threaded hole (11) is further formed in the engine shell (1), the automobile water pump automatic start-stop system further comprises a temperature-sensitive switch assembly (2) fixedly mounted in the mounting threaded hole (11), the temperature-sensitive switch assembly (2) comprises a heat conduction sleeve (21), a memory alloy spring (22) located in the heat conduction sleeve (21), a first extension spring (211), a sliding piece (24), an ejector rod (241), a bearing plate (25) and a conducting plate (251), the heat conduction sleeve (21) is fixedly connected in the mounting threaded hole (11), a top cover (26) is arranged on an opening of the heat conduction sleeve (21), two conducting pins (261) are symmetrically arranged on the top cover (26), the memory alloy spring (22) is arranged in the heat conduction sleeve (21) and is close to the inner wall of the heat conduction sleeve (21), the first extension spring (211) is arranged at the center of the memory alloy spring (22), one end of the first extension spring (211) is fixedly connected to the inner bottom wall of the heat conducting sleeve (21), the other end of the first extension spring (211) is provided with a sliding piece (24), the ejector rod (241) is arranged on the sliding piece (24) and deviates from one side of the first extension spring (211), the bearing plate (25) is movably arranged in the heat conducting sleeve (21), the conducting plate (251) is arranged on the bearing plate (25) and faces one side of the top cover (26), and the conducting plate (251) is opposite to two conducting pins (261) on the top cover (26).

2. The automatic start-stop system of the automobile water pump according to claim 1, characterized in that: the inner bottom wall of the heat conduction sleeve (21) is provided with a first spring seat (211), one side of the sliding piece (24) is provided with a second spring seat (242) corresponding to the first spring seat (211), and two ends of the first extension spring (23) are respectively fixed on the first spring seat (211) and the second spring seat (242).

3. The automatic start-stop system of the automobile water pump according to claim 1, characterized in that: and a limiting ring (212) is arranged at the bottom of the heat conduction sleeve (21).

4. The automatic start-stop system of the automobile water pump according to claim 1, characterized in that: the heat conduction sleeve is characterized in that a limiting bearing ring (213) is arranged on the inner side wall of the heat conduction sleeve (21) and close to an opening of the heat conduction sleeve (21), two second extension springs (27) are symmetrically arranged on one side, facing the bearing plate (25), of the limiting bearing ring (213), and the other ends of the two second extension springs (27) are connected with the bearing plate (25).

5. The automatic start-stop system of the automobile water pump according to claim 1, characterized in that: the heat conduction sleeve (21) extends into a water jacket inner cavity (12) of the engine through a mounting threaded hole (11) on the engine shell (1).

6. The automatic start-stop system of the automobile water pump according to claim 1, characterized in that: and the outer side surface of the heat conduction sleeve (21) is provided with an external thread correspondingly matched with the mounting threaded hole (11).

7. The automatic start-stop system of the automobile water pump according to claim 1, characterized in that: the memory alloy spring (22) is a CuZnAl memory alloy spring.

8. The automatic start-stop system of the water pump of the automobile according to any one of claims 1 to 7, characterized in that: but temperature switch assembly (2), motor (32) and power supply unit (5) of car link into switching electric circuit, electrically conductive pin (261) run through top cap (26), and electrically conductive pin (261) its one end that extends to outside top cap (26) is equipped with wire (4) of connection in closed circuit, and the other end extends to in heat conduction cover (21).