CN218522719U - Oil blocking structure of electric control silicone oil clutch water pump - Google Patents

Abstract

The utility model discloses an automatically controlled silicon oil clutch water pump keep off oily structure, it includes: an active mechanism; the driven mechanism comprises a shaft connecting bearing penetrating through the bearing seat, a water pump impeller arranged at one end part of the shaft connecting bearing and a driven plate arranged at the other end part of the shaft connecting bearing and positioned in the accommodating space, a working cavity is formed between the driven plate and the shell, and the working cavity and the oil storage chamber are respectively communicated through the oil return channel and the oil outlet; the part of the accommodating space outside the peripheral surface of the driven plate is defined as an oil scraping cavity, and an oil scraper ring is arranged in the oil scraping cavity. Therefore, the silicone oil can not remain in the tooth socket and can enter the oil storage cavity through the high pressure in the oil scraping cavity; and no silicone oil is left in the working cavity, so that the separation rotating speed of the clutch can be effectively reduced.

Description

Oil blocking structure of electric control silicone oil clutch water pump

Technical Field

The utility model belongs to the technical field of automobile engine cooling system subassembly, a keep off oily structure is related to, concretely relates to fender oily structure of automatically controlled silicon oil clutch water pump.

Background

With the continuous application and popularization of the existing electric control silicone oil clutch water pump, customers pay attention to the product performance of the electric control silicone oil clutch water pump. With the promotion of national emission standards of the fifth country and the sixth country, the requirements of various large whole factories on the control precision and the response time of the electric control silicone oil clutch water pump are continuously improved, and customers put higher requirements on the performance of the electric control silicone oil clutch water pump.

At present, an oil scraping cavity structure of an electric control silicone oil clutch water pump is often in a semi-open type, and silicone oil may not form large oil return pressure in an oil scraping cavity, so that the problems of unsmooth oil return, slow oil return and the like are caused. And the oil scraping cavity of the electric control silicone oil clutch water pump is generally placed on the inner side of the tooth socket at the outermost ring of the driving and driven parts, and silicone oil reaches the outermost side of the tooth socket firstly under the action of centrifugal force in the rotating process and then enters the oil scraping cavity, so that part of silicone oil remains in the tooth socket and cannot enter the oil scraping cavity, and the silicone oil remaining in the tooth socket can cause the clutch to be incapable of being separated.

Disclosure of Invention

An object of the utility model is to provide an automatically controlled silicon oil clutch water pump keep off oily structure to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an automatically controlled silicon oil clutch water pump keep off oily structure, it includes:

the driving mechanism comprises a driving wheel, a pump body front cover arranged on one side of the driving wheel, a shell arranged between the driving wheel and the pump body front cover, a bearing seat arranged in the driving wheel and a valve plate assembly; an oil storage chamber is formed among the shell, the driving wheel and the bearing seat, the valve plate assembly is arranged in the oil storage chamber, and an accommodating space is formed between the shell and the front cover of the pump body; the shell comprises a shell body, an oil return channel and an oil outlet, wherein the oil return channel is formed in the shell body;

the driven mechanism comprises a shaft connecting bearing penetrating through the bearing seat, a water pump impeller arranged at one end part of the shaft connecting bearing and a driven plate arranged at the other end part of the shaft connecting bearing and positioned in the accommodating space, a working cavity is formed between the driven plate and the shell, and the working cavity and the oil storage chamber are respectively communicated through the oil return channel and the oil outlet;

the part of the accommodating space outside the peripheral surface of the driven plate is defined as an oil scraping cavity, and an oil scraper ring is arranged in the oil scraping cavity.

Optimally, an oil return port is defined as a communication position between the oil return channel and the oil storage chamber, an oil inlet is defined as a communication position between the oil return port and the accommodating space, and the distance between the oil return port and the axial lead of the shaft connecting bearing is smaller than the distance between the oil inlet and the axial lead of the shaft connecting bearing.

Further, the oil inlet is communicated with the oil scraping cavity, and the oil retainer ring is arranged corresponding to the oil inlet.

Furthermore, the edge of the surface of the driven plate is provided with a plurality of circles of tooth grooves, the surface of the shell is provided with a plurality of circles of gear rings matched with the tooth grooves, the tooth grooves and the gear rings form the working cavity, the tooth groove height of the outermost circle is smaller than the tooth groove height of the innermost circle, and the gear ring height of the outermost circle is smaller than the gear ring height of the innermost circle.

Furthermore, the tooth grooves are formed in multiple circles, the height of the tooth grooves is increased from outside to inside, and the height of the gear rings is increased from outside to inside.

Furthermore, the heights of the tooth grooves of the multiple circles are increased from outside to inside and then kept consistent, and the heights of the gear rings of the multiple circles are increased from outside to inside and then kept consistent.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses automatically controlled silicon oil clutch water pump's fender oil structure, through defining the partial accommodation space outside the peripheral face of driven plate for scraping the oil pocket and be provided with the oil scraper ring in scraping the oil pocket, silicon oil receives the effect of centrifugal force in rotatory process like this, can reach outer lane scraping oil pocket at first, and silicon oil can't remain in the tooth's socket like this, can get into the oil storage chamber through the high pressure in the scraping oil pocket; no silicone oil is left in the working cavity, so that the separation rotating speed of the clutch can be effectively reduced; the silicone oil can form great oil return pressure in the oil scraping cavity, and the problems of unsmooth oil return, slow oil return and the like can be effectively solved.

Drawings

FIG. 1 is a schematic structural view of the electric control silicone oil clutch water pump of the present invention;

fig. 2 is a schematic view of a shaft coupling bearing structure used in the electric control silicone oil clutch water pump of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 1;

FIG. 4 is a schematic structural view of a housing in the electric control silicon oil clutch water pump of the present invention;

FIG. 5 is a schematic diagram of the position of silicone oil when the electric control silicone oil clutch water pump of the present invention rotates at a high speed;

fig. 6 is the structure schematic diagram of the driven plate in the electric control silicon oil clutch water pump of the utility model.

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 embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model discloses automatically controlled silicon oil clutch water pump's fender oil structure is applied to automatically controlled silicon oil clutch water pump, mainly includes matched with initiative mechanism and follower.

The driving mechanism mainly comprises a pump body front cover 1, a shell 4, a bearing seat 10, a driving wheel 12, a valve plate assembly 14 and the like. The driving wheel 12 is typically a belt pulley, and can be connected with a power unit through a belt, so that the rotation of the driving wheel 12 is driven by the power unit (the driving wheel 12 is connected with the engine train through a poly-v belt, and the rotation speed and the engine train are kept synchronous). The pump body front cover 1 is arranged at one side of the driving wheel 12, and is usually detachably mounted on the end surface of the driving wheel 12 in the conventional manner, such as mounting and connecting by using fasteners such as bolts and the like; when the driving wheel 12 rotates, the pump body front cover 1 synchronously rotates. The housing 4 is installed between the driving wheel 12 and the pump body front cover 1, and a certain volume of accommodating space needs to be formed between the housing 4 and the pump body front cover 1. In the embodiment, the housing 4 is compressed between the driving wheel 12 and the pump body front cover 1, that is, the housing 4 is fixed in a way of axial compression force of the pump body front cover 1 and the driving wheel 12; the housing 4 includes a housing body 41 (the central portion of the housing body 41 has a through hole), at least one oil return passage 42 opened in the housing body 41, and at least one oil outlet 44 opened in the housing body 41. The bearing seat 10 is positioned in the driving wheel 12 and is matched with the shell 4 (a step structure matched with the through hole is formed on the peripheral surface or the end surface of the bearing seat 10 to realize the sealed splicing between the bearing seat 10 and the shell 4), so that an oil storage chamber 8 is formed among the shell 4, the driving wheel 12 and the bearing seat 10 (namely, the oil storage chamber 8 is enclosed among the shell, the driving wheel and the bearing seat, and the oil storage chamber 8 is a closed cavity, so that most of silicone oil can be prevented from overflowing from the oil storage chamber 8 to enter the working cavity 3 in the shutdown process, and the water pump is ensured to run at a lower rotating speed when the water temperature of the engine is lower and the working rotating speed of the water pump is not required to be too high when the water temperature of the engine is lower); the valve plate assembly 14 is disposed in the oil storage chamber 8 and is used for adjusting the opening and closing of the oil return passage 42 and the oil outlet 44.

The driven mechanism is matched with the driving mechanism, and when the driving mechanism rotates, the driven mechanism can be driven to rotate through the silicone oil. The driven mechanism comprises a shaft connecting bearing 6 arranged on the bearing seat 10 in a penetrating mode, a water pump impeller arranged at one end of the shaft connecting bearing 6 and a driven plate 2 arranged at the other end of the shaft connecting bearing 6 and located in the accommodating space. A working cavity 3 is formed between the driven plate 2 and the shell 4, and the working cavity 3 and the oil storage chamber 8 are respectively communicated through an oil return channel 42 and an oil outlet 44. Namely, the bearing seat 10 is sleeved on the shaft connecting bearing 6, and the connection mode between the bearing seat and the shaft connecting bearing is rigid connection; the bearing seat 10 can rotate around the axial lead of the shaft connecting bearing 6 as a rotating shaft due to the characteristics of the shaft connecting bearing 6 (namely, the bearing seat 10 can rotate around the axial lead of the shaft connecting bearing 6 although being fixed on the surface of the shaft connecting bearing 6); the shaft connecting bearing 6 is also arranged at the center of the driving wheel 12, and the axis line of the shaft connecting bearing is generally coincident with the axis line of the driving wheel 12. In this embodiment, a water pump body 7 may be further provided as required, the water pump body 7 is sleeved on the shaft connecting bearing 6 (the sleeving manner is the same as that of the bearing seat 10), and is located on one side of the bearing seat 10, so that the housing 4 and the water pump body 7 are respectively located on two sides of the bearing seat 10; at this time, the shaft coupling bearing 6 is inserted into the water pump body 7 and the bearing housing 10. In the present embodiment, the shaft coupling bearing 6 adopts a conventional structure, as shown in fig. 2, but has a rotatable first housing 62 and a rotatable second housing 63, the water pump body 7 is sleeved on the first housing 62, and the bearing seat 10 is sleeved on the second housing 63; that is, the shaft coupling bearing 6 is a two-stage bearing (conventionally, a one-stage bearing), and separates the water pump body 7 and the bearing seat 10, which results in the following advantages: (a) The cost is lower, the space occupation is small, and the space size of the whole water pump is reduced; (b) The eccentricity of the clutch part is reduced, and the service life of the bearing is prolonged; (c) good manufacturability and short manufacturing period: the assembly process is simple and convenient, the processing amount is small, and the time consumption is short. The water pump impeller is mounted on one end of the shaft bearing 6 (the end usually remote from the pump body front cover 1).

The electric control silicon oil clutch water pump also comprises an electromagnetic component. The electromagnetic component can be electrified to generate magnetic force, so that the electromagnetic component can be used for controlling the valve plate assembly 14 through electrifying or powering off; when the valve plate assembly is electrified, the electromagnetic assembly generates magnetic force to enable the valve plate assembly 14 to generate axial displacement; when the power is off, the magnetic force disappears, and the valve plate assembly 14 resets; it is possible to realize the opening of the oil outlet 44 when closing the oil return passage 42 or the opening of the oil return passage 42 when closing the oil outlet 44. In the present embodiment, it is defined that a communication position of the oil return passage 42 with the oil storage chamber 8 is an oil return opening 43, a communication position with the accommodating space is an oil inlet 40, a distance between the oil return opening 43 and a shaft axis of the shaft coupling bearing 6 is smaller than a distance between the oil inlet 40 and the shaft axis of the shaft coupling bearing 6, and a distance between the oil outlet 44 and the shaft axis of the shaft coupling bearing 6 is also smaller than a distance between the oil inlet 40 and the shaft axis of the shaft coupling bearing 6, as shown in fig. 3 and 4; namely, the oil inlet 40 is positioned at the outer ring of the oil outlet 44 and the oil return opening 43. Therefore, the oil outlet 44 is opened and the oil return opening 43 is closed when coupling is needed (the oil return channel 42 is closed by the valve plate assembly 14, and silicone oil in the working cavity 3 cannot return to the oil storage chamber 8), namely the oil return channel 42 is controlled to be not in a common normally open state, the oil return opening 43 is opened and the oil outlet 44 is closed when separation is needed, coupling and separation time of the clutch can be effectively prolonged, and heat of a cooling system can be quickly taken away. In the present embodiment, a portion of the accommodating space outside the peripheral surface of the driven plate 2 (i.e., outside the driven plate 2) is defined as a wiper chamber 101 (i.e., a narrow space surrounded by the driven plate 2, the housing 4, and the pump body front cover 1), and the oil slinger 9 is provided in the wiper chamber 101. Namely, the oil scraping cavity 101 is positioned at the outer side of the outermost ring of the tooth socket of the driven plate 2, and the silicone oil is acted by centrifugal force in the rotating process and can reach the outermost ring of the oil scraping cavity firstly, so that the silicone oil can not remain in the tooth socket and can enter the oil storage cavity through high pressure in the oil scraping cavity; no silicone oil is left in the working cavity, so that the separation rotating speed of the clutch can be effectively reduced; an oil retainer ring is arranged in the oil scraping cavity (in the embodiment, the oil inlet 40 is communicated with the oil scraping cavity 101, and the oil retainer ring 9 is arranged corresponding to the oil inlet 40 to retain the oil inlet 40), so that the silicone oil can form great oil return pressure in the oil scraping cavity, and the problems of unsmooth oil return, slow oil return and the like can be effectively solved.

In the embodiment, the valve plate assembly 14 is located at the outer ring of the bearing seat 10, and mainly includes an elastic clip 141, a retaining ring 143, and a metal block 142. The resilient clip 141 is mounted between the housing 4 and the drive wheel 12 and is normally compressed between the housing 4 and the drive wheel 12 to rely on axial compression for securement. The retainer ring 143 is mounted on the surface of the elastic clip 141 (the surface facing the driven plate 2) and cooperates with the oil return passage 42, the oil outlet 44. In a preferred embodiment, the baffle ring 143 has an annular blocking portion extending toward the driven plate 2, and the annular blocking portion is provided with a first avoiding hole matching with the oil return passage 42 and a second avoiding hole matching with the oil outlet 44, so that when the first avoiding hole is misaligned with the oil return passage 42, the second avoiding hole is communicated with the oil outlet 44 (at this time, the oil return passage 42 is closed and the oil outlet 44 is opened); when the second avoiding hole is staggered with the oil outlet 44, the first avoiding hole is communicated with the oil return channel 42 (at this time, the oil outlet 44 is closed, and the oil return channel 42 is opened), which is beneficial to improving the reliability of controlling the oil return channel 42 and the oil outlet 44. The metal block 142 is mounted on the other surface of the elastic clip 141 to face the electromagnetic assembly, so that the metal block 142 is attracted to cause the valve plate assembly 14 to move axially when the electromagnetic assembly generates a magnetic force.

In this embodiment, a plurality of circles of tooth grooves 22 are formed at the edge of the surface (the surface facing the housing) of the driven plate 2, a plurality of circles of gear rings 45 matched with the tooth grooves 22 are formed on the surface of the housing 4, and the tooth grooves 22 and the gear rings 45 are matched to form the working chamber 3. The tooth grooves 22 at the outermost ring are lower than the tooth grooves 22 at the innermost ring, and the gear ring 45 at the outermost ring is lower than the gear ring 45 at the innermost ring. The height of the tooth socket 22 at the outermost ring of the driven plate 2 is reduced, so that the working area of the tooth socket 22 at the outermost ring is reduced, the separation rotating speed can be effectively reduced, the separation time is shortened, and the defects that the existing tooth socket at the outer ring of the driven part and the inner wall of a working cavity of a driving part shear silicon oil, and the clutch is slowly separated or not separated are overcome. That is, the tooth grooves 22 of the driven plate 2 are in the form of stepped teeth (i.e., stepped tooth grooves), the area of the outermost ring of tooth grooves 22 shearing the silicone oil is much smaller than that of the inner ring of tooth grooves 22, the torque generated by the outermost ring of tooth grooves 22 is reduced, and the driven plate 2 does not generate a high rotational speed due to the excessively large shearing area of the outer ring of tooth grooves even in the case where a small amount of silicone oil remains in the working chamber. In one embodiment, the height of the plurality of teeth slots 22 increases from the outside to the inside, and the height of the plurality of ring gears 45 also increases from the outside to the inside; preferably, the heights of the multiple circles of tooth sockets 22 are increased from outside to inside and then kept consistent, and the heights of the multiple circles of gear rings 45 are also increased from outside to inside and then kept consistent (the specific height trend, the number of tooth sockets with different heights and the like can be adjusted according to actual needs), so as to further reduce the separation speed and shorten the separation time.

In this embodiment, the valve plate assembly 14 (mainly the elastic clip 141) divides the oil storage chamber 8 into two communicating chambers, and the chamber that is matched with the oil return passage 42 is defined as a first oil storage chamber (the baffle ring 143 is located in the first oil storage chamber), and the other chamber is defined as a second oil storage chamber (the metal block 142 is located in the second oil storage chamber), and the radius of the second oil storage chamber is greater than the radius of the first oil storage chamber, so that the oil storage chamber 8 is a small-top and large-bottom irregular structure rather than a regular annular cavity (taking fig. 1 as a reference), which is beneficial to setting the position of the oil return port 43. This avoids the silicone oil in the oil reservoir chamber 8 blocking the silicone oil in the oil return passage 42 from entering the oil reservoir chamber 8 due to centrifugal force when the clutch needs to be disengaged (the silicone oil 31 in the oil reservoir chamber 8 is in the position shown in fig. 5 when rotating at high speed). The silicon oil in the working cavity 3 can completely enter the oil storage chamber 8, when the engine is started, the electric control silicon oil clutch water pump cannot immediately run at a high rotating speed, when the water temperature of the engine is low, the overhigh working rotating speed of the water pump is not needed, and at the moment, the water pump impeller can run at a low rotating speed.

In the present embodiment, an adapter block 5 is fixed to the other end of the shaft coupling bearing 6 (in the present embodiment, the adapter 5 is rigidly connected to the shaft coupling bearing 6), and the driven plate 2 is detachably mounted on the adapter block 5. As shown in fig. 6, the driven plate 2 includes a plate body 21, a plurality of connecting holes 23 are formed in the middle of the plate body 21, and a plurality of connecting holes are correspondingly formed in the adaptor block 5, so that the driven plate 2 can be detachably mounted on the adaptor block 5 by fasteners such as bolts. The driven plate 2 and the mandrel of the shaft connecting bearing 6 are in transition connection through the adapter 5, the rigid connection (the same mode) of interference press fitting and the like between the conventional driven plate 2 and the shaft connecting bearing 6 is replaced, the split type and part assembly requirements in the water pump assembly process are met, and the assembly process is guaranteed.

In this embodiment, the electromagnetic assembly includes a magnetism isolating ring 11 installed between the bearing seat 10 and the driving wheel 12 (the magnetism isolating ring 11 can be connected with the bearing seat 10 and the driving wheel 12 through internal and external threads respectively), a magnetic yoke 13 installed on the water pump body 7 through the support frame (the magnetic yoke 13 is located between the water pump body 7 and the driving wheel 12), and a magnetic pole 15 installed on the magnetic yoke 13, where the magnetic pole 15 is distributed along the axial direction of the spindle of the coupling bearing 6, so that magnetic force lines are not dispersed, and magnetic force is stable and reliable.

The working principle of the electric control silicone oil clutch water pump for improving the separation performance is as follows:

when the ECU acquires a temperature signal of the engine through a temperature sensor, a corresponding instruction is given:

starting cooling: the PWM voltage is cut off, the magnetic pole 15 on the magnetic yoke 13 loses magnetic force, the valve plate assembly 14 is reset, the oil return port 43 is closed, the oil outlet 44 is opened, the silicone oil in the oil storage chamber 8 rapidly flows into the working cavity 3, the product is in a coupling state, and the driven plate 2 drives the water pump impeller to start normal rotation and work through the shaft coupling bearing 6;

closing cooling: the PWM voltage is switched on, the magnetic pole 15 on the magnetic yoke 13 generates magnetic force, the oil outlet 44 is closed, the oil return port 43 is opened, the silicone oil in the working cavity 3 rapidly flows into the oil storage chamber 8, the product is in a separation state, and the driven plate 2 drives the water pump impeller to start to enter a low-speed rotation state through the shaft connecting bearing 6.

The above, only be the embodiment of the preferred of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, which are designed to be replaced or changed equally, all should be covered within the protection scope of the present invention.

Claims (6)

1. The utility model provides an automatically controlled silicon oil clutch water pump keep off oily structure which characterized in that, it includes:

the driving mechanism comprises a driving wheel (12), a pump body front cover (1) arranged on one side of the driving wheel (12), a shell (4) arranged between the driving wheel (12) and the pump body front cover (1), a bearing seat (10) arranged in the driving wheel (12) and a valve plate assembly (14); an oil storage chamber (8) is formed among the shell (4), the driving wheel (12) and the bearing seat (10), the valve plate assembly (14) is arranged in the oil storage chamber (8), and an accommodating space is formed between the shell (4) and the pump body front cover (1); the shell (4) comprises a shell body (41), an oil return channel (42) arranged in the shell body (41) and an oil outlet (44) arranged in the shell body (41);

the driven mechanism comprises a shaft connecting bearing (6) arranged on the bearing seat (10) in a penetrating mode, a water pump impeller arranged at one end of the shaft connecting bearing (6) and a driven plate (2) arranged at the other end of the shaft connecting bearing (6) and located in the accommodating space, a working cavity (3) is formed between the driven plate (2) and the shell (4), and the working cavity (3) and the oil storage chamber (8) are communicated through the oil return channel (42) and the oil outlet (44) respectively;

the part of the accommodating space, which is defined at the outer side of the peripheral surface of the driven plate (2), is a scraping oil cavity (101), and an oil deflector ring (9) is arranged in the scraping oil cavity (101).

2. The oil blocking structure of the electric control silicone oil clutch water pump according to claim 1, characterized in that: and defining a communication part of the oil return channel (42) and the oil storage chamber (8) as an oil return opening (43) and a communication part of the oil return channel and the accommodating space as an oil inlet (40), wherein the distance between the oil return opening (43) and the axial lead of the shaft connecting bearing (6) is smaller than the distance between the oil inlet (40) and the axial lead of the shaft connecting bearing (6).

3. The oil blocking structure of the electric control silicone oil clutch water pump according to claim 2, characterized in that: the oil inlet (40) is communicated with the oil scraping cavity (101), and the oil slinger (9) is arranged corresponding to the oil inlet (40).

4. The oil blocking structure of the electric control silicone oil clutch water pump according to claim 1, characterized in that: the edge on driven plate (2) surface has seted up many rings of tooth's socket (22), casing (4) seted up on the surface with tooth's socket (22) matched with many rings of ring gear (45), tooth's socket (22) with ring gear (45) form working chamber (3), outer lane tooth's socket (22) height is less than the inner circle tooth's socket (22) height, outer lane ring gear (45) height is less than the inner circle ring gear (45) height.

5. The oil blocking structure of the electric control silicone oil clutch water pump according to claim 4, characterized in that: the height of the tooth grooves (22) is increased from outside to inside for multiple circles, and the height of the gear ring (45) is increased from outside to inside for multiple circles.

6. The oil blocking structure of the electric control silicone oil clutch water pump according to claim 4 or 5, characterized in that: the heights of the multiple circles of tooth grooves (22) are increased from outside to inside and then kept consistent, and the heights of the multiple circles of gear rings (45) are increased from outside to inside and then kept consistent.

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