Flexible variable-speed automobile water pump

Abstract

The utility model relates to the technical field of automobile water pumps, in particular to a flexible variable-speed automobile water pump which comprises an automobile water pump body, a first driving shaft and a second driving shaft are arranged in a through hole, a connecting block is arranged at the end, close to the second driving shaft, of the first driving shaft, and a first bearing block is arranged at one end of the second driving shaft. An elastic assembly is arranged between the first bearing block and the belt wheel, an air cylinder is arranged outside the automobile water pump body, and a sliding assembly is arranged on the surface of the second bearing block. The method comprises the following steps of: 1, starting the air cylinder at the moment, extending the telescopic rod, rotating the connecting block and circulating the cooling liquid; secondly, an air cylinder is started, a telescopic rod is shortened, a second driving shaft is separated from a connecting block, and the rotating speed of a first driving shaft is slowly reduced. And the first step and the second step are repeated, so that the rotating speed of the impeller flexibly changes within a certain interval range value, the load of the engine can be effectively reduced, oil consumption is reduced, and energy is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile water pumps, in particular to a flexible speed-changing automobile water pump. Background Art

[0002] In the cylinder of the car engine, there are multiple water channels for cooling water circulation, which are connected to the radiator (commonly known as the water tank) placed at the front of the car through water pipes, forming a large water circulation system. At the upper water outlet of the engine, there is a water pump, which is driven by a fan belt to pump out the hot water in the water channel of the engine cylinder and pump in the cold water. There is also a thermostat next to the water pump. When the car is just started (cold car), it is not opened, so that the cooling water does not pass through the water tank, but only circulates in the engine (commonly known as small circulation). When the temperature of the engine reaches above 95 degrees, it is opened, and the hot water in the engine is pumped into the water tank. When the car moves forward, the cold wind blows through the water tank and takes away the heat.

[0003] For example, the authorization announcement number "CN104100533B" is called an automobile water pump. Although a retaining ring is set between the inner hole of the housing and the shaft bearing to achieve a close fit between the shaft bearing and the housing, the shaft bearing is prevented from moving or even falling out in the inner hole of the housing, thereby improving the safety and reliability of the automobile water pump, and the structure is simple and the processability is good. In fact, when the engine is hot, coolant circulation is not required for a short time. When the engine reaches a certain temperature, a small flow of coolant circulation is required at idle speed. The existing engine cannot achieve water pump changes in the temperature range, resulting in energy waste. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a flexible variable speed automobile water pump.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A flexible variable speed automobile water pump is designed, comprising an automobile water pump body, a through hole is provided on the surface of the automobile water pump body, a first driving shaft and a second driving shaft are provided inside the through hole, a connecting block is provided at one end of the first driving shaft close to the second driving shaft, a connecting groove is provided on the side surface of the connecting block close to the second driving shaft, one end of the second driving shaft contacts the front inner wall surface of the connecting groove, an impeller is sleeved on the outside of one end of the first driving shaft, a pulley is sleeved on the outside of the second driving shaft, a plurality of limiting grooves are provided in an annular manner on the inner wall of the pulley, a plurality of limiting blocks are provided in an annular manner on the surface of the second driving shaft, the limiting blocks match the limiting grooves, a first supporting block is provided at one end of the second driving shaft, an elastic component is provided between the first supporting block and the pulley, a cylinder is provided on the outside of the automobile water pump body, a telescopic rod is provided on the side surface of the cylinder close to the first supporting block, a second supporting block is provided on the end of the telescopic rod close to the first supporting block, and a sliding component is provided on the surface of the second supporting block.

[0007] Preferably, the elastic component includes a first moving block and a second moving block, the first moving block and the second moving block are both sleeved on the second driving shaft, a spring is provided between the first moving block and the second moving block, and the spring is sleeved on the second driving shaft.

[0008] Preferably, the sliding assembly includes a plurality of mounting grooves, the cross-sectional shape of the mounting grooves is greater than half of a circle, and balls are provided inside the plurality of mounting grooves.

[0009] Preferably, a first positioning groove is provided at the center of a side surface of the first supporting block close to the second supporting block, and a second positioning groove is provided at the center of a side surface of the second supporting block close to the first supporting block, and the second positioning groove and the first positioning groove are arranged on the same horizontal line.

[0010] Preferably, the inner wall of the connecting groove is provided with a plurality of slots, and rubber strips are provided inside the plurality of slots, and the rubber strips are inclined from back to front in the direction of the second driving shaft.

[0011] Preferably, the front inner wall of the connecting groove is subjected to anti-slip treatment.

[0012] The utility model proposes a flexible variable speed automobile water pump, which has the following beneficial effects: when the engine is in the hot car, the cylinder is started to shorten the telescopic rod, drive the second support block to move backward, and due to the compression of the spring, the first support block is pushed to move backward, so that the second drive shaft is separated from the connection block. At this time, the rotation of the pulley cannot drive the connection block to rotate, and the coolant is not circulated at this time, ensuring that the engine reaches the hot car temperature as soon as possible; when it reaches a certain temperature, a small flow of coolant circulation is required, step one: at this time, the cylinder is started to extend the telescopic rod, and then the second support block is driven to move forward, and the first support block is pushed forward to move forward, so that the second drive shaft contacts the inner wall of the connection groove, and through the rotation of the pulley, due to the friction force, the connection block is rotated, and then the impeller is rotated through the first drive shaft to circulate the coolant. Step two: then start the cylinder, shorten the telescopic rod, drive the second support block to move backward, and due to the compression of the spring, push the first support block to move backward, so that the second drive shaft is separated from the connection block, and the speed of the first drive shaft is slowly reduced. When a critical value is reached, steps one and two are repeated to allow the impeller speed to change flexibly within a certain range, which can effectively reduce the load on the engine, reduce fuel consumption, and save energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a right side sectional view of the utility model;

[0014] Figure 2 This is a structural schematic diagram of the connection block of the utility model;

[0015] Figure 3 It is a structural schematic diagram of the second supporting block of the utility model;

[0016] Figure 4 This is an enlarged view of position A of the utility model;

[0017] Figure 5 It is an enlarged view of position B of the present utility model.

[0018] In the figure: automobile water pump body 1, through hole 2, first drive shaft 3, second drive shaft 4, connecting block 5, connecting groove 6, impeller 7, pulley 8, limit groove 9, limit block 10, first supporting block 11, cylinder 12, telescopic rod 13, second supporting block 14, first moving block 15, second moving block 16, spring 17, mounting groove 18, ball 19, first positioning groove 20, second positioning groove 21, card groove 22, rubber strip 23. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Reference Figure 1-5 A flexible variable speed automobile water pump comprises an automobile water pump body 1, a through hole 2 is provided on the surface of the automobile water pump body 1, a first drive shaft 3 and a second drive shaft 4 are provided inside the through hole 2, a connecting block 5 is provided at one end of the first drive shaft 3 close to the second drive shaft 4, a connecting groove 6 is provided on the surface of the connecting block 5 close to the second drive shaft 4, one end of the second drive shaft 4 contacts the front inner wall surface of the connecting groove 6, an impeller 7 is sleeved on the outside of one end of the first drive shaft 3, a pulley 8 is sleeved on the outside of the second drive shaft 4, a plurality of limiting grooves 9 are annularly provided on the inner wall of the pulley 8, a plurality of limiting blocks 10 are annularly provided on the surface of the second drive shaft 4, the limiting blocks 10 match the limiting grooves 9, and the pulley 8 can drive the second drive shaft 4 to rotate by the clamping of the limiting blocks 10 and the limiting grooves 9. A first supporting block 11 is provided at one end of the second driving shaft 4, an elastic component is provided between the first supporting block 11 and the pulley 8, a cylinder 12 is provided on the outside of the automobile water pump body 1, a telescopic rod 13 is provided on the surface of one side of the cylinder 12 close to the first supporting block 11, a second supporting block 14 is provided on the end of the telescopic rod 13 close to the first supporting block 11, and a sliding component is provided on the surface of the second supporting block 14.

[0021] The elastic component includes a first moving block 15 and a second moving block 16, both of which are sleeved on the second drive shaft 4, and a spring 17 is arranged between the first moving block 15 and the second moving block 16, and the spring 17 is sleeved on the second drive shaft 4. Through the compression of the spring 17, the second drive shaft 4 can be pushed to move backward, so that the second drive shaft 4 is separated from the connecting block 5.

[0022] The sliding assembly includes a plurality of mounting grooves 18, and the cross-sectional shape of the mounting grooves 18 is greater than half of a circle, so as to ensure that the ball 19 will not be separated from the mounting grooves 18. The balls 19 are arranged inside the plurality of mounting grooves 18. The friction between the second supporting block 14 and the first supporting block 11 is reduced by the sliding contact between the balls 19 and the first supporting block 11.

[0023] A first positioning groove 20 is provided at the center of one side surface of the first supporting block 11 close to the second supporting block 14, and a second positioning groove 21 is provided at the center of one side surface of the second supporting block 14 close to the first supporting block 11. The second positioning groove 21 and the first positioning groove 20 are arranged on the same horizontal line. When installing the second drive shaft 4 and the cylinder 12, by placing the first positioning groove 20 and the second positioning groove 21 on the same horizontal line, it can be ensured that the second drive shaft 4 and the cylinder 12 are on the same horizontal line.

[0024] The inner wall of the connecting groove 6 is provided with a plurality of slots 22, and each of the slots 22 is provided with a rubber strip 23, which is inclined from back to front toward the second drive shaft 4. The rubber strip 23 can increase the friction between the second drive shaft 4 and the connecting block 5.

[0025] The front inner wall of the connecting groove 6 is treated with anti-skid surface to increase the friction between the second driving shaft 4 and the connecting block 5.

[0026] Working principle: When the engine is warming up, start the cylinder 12 to shorten the telescopic rod 13, driving the second supporting block 14 to move backward. Due to the compression of the spring 17, the first supporting block 11 is pushed backward, causing the second drive shaft 4 to detach from the connecting block 5. At this time, the rotation of the pulley 8 cannot drive the connecting block 5 to rotate. At this time, the coolant is not circulated, ensuring that the engine reaches the warm-up temperature as soon as possible; when it reaches a certain temperature, a small flow of coolant is required to circulate. Step 1: At this time, start the cylinder 12 to extend the telescopic rod 13, thereby driving the second supporting block 14 to move forward, pushing the first supporting block 11 to move forward, causing the second drive shaft 4 to contact the inner wall of the connecting groove 6, and through the rotation of the pulley 8, due to the action of friction, the connecting block 5 rotates, and then the impeller 7 rotates through the first drive shaft 3 to circulate the coolant. Step 2: Then start the cylinder 12 to shorten the telescopic rod 13, drive the second support block 14 to move backward, and due to the compression of the spring 17, push the first support block 11 to move backward, so that the second drive shaft 4 is separated from the connecting block 5, and the speed of the first drive shaft 3 is slowly reduced. When a critical value is reached, repeat steps 1 and 2 to make the speed of the impeller 7 change flexibly within a certain range, which can effectively reduce the load of the engine, reduce fuel consumption, and save energy. When a large flow of coolant is required for normal driving, the function of the pulley 8 driving the impeller 7 to rotate is realized through step 1.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A flexible variable speed automobile water pump, comprising an automobile water pump body (1), characterized in that: The surface of the automobile water pump body (1) is provided with a through hole (2), a first drive shaft (3) and a second drive shaft (4) are provided inside the through hole (2), a connecting block (5) is provided at one end of the first drive shaft (3) close to the second drive shaft (4), a connecting groove (6) is provided on a side surface of the connecting block (5) close to the second drive shaft (4), one end of the second drive shaft (4) is in contact with the front inner wall surface of the connecting groove (6), an impeller (7) is sleeved on one end of the first drive shaft (3), a belt pulley (8) is sleeved on the outside of the second drive shaft (4), and a plurality of limit grooves (9) are provided in an annular manner on the inner wall of the belt pulley (8). ), a plurality of limit blocks (10) are provided in an annular shape on the surface of the second drive shaft (4), the limit blocks (10) match the limit grooves (9), a first support block (11) is provided at one end of the second drive shaft (4), an elastic component is provided between the first support block (11) and the pulley (8), a cylinder (12) is provided on the outside of the automobile water pump body (1), a telescopic rod (13) is provided on the surface of one side of the cylinder (12) close to the first support block (11), a second support block (14) is provided at one end of the telescopic rod (13) close to the first support block (11), and a sliding component is provided on the surface of the second support block (14).

2. A flexible variable speed automobile water pump according to claim 1, characterized in that: The elastic component comprises a first moving block (15) and a second moving block (16); the first moving block (15) and the second moving block (16) are both sleeved on the second drive shaft (4); a spring (17) is provided between the first moving block (15) and the second moving block (16); the spring (17) is sleeved on the second drive shaft (4).

3. A flexible variable speed automobile water pump according to claim 1, characterized in that: The sliding assembly comprises a plurality of mounting grooves (18), the cross-sectional shape of the mounting grooves (18) being greater than half of a circle, and a ball bearing (19) is disposed inside each of the plurality of mounting grooves (18).

4. A flexible variable speed automobile water pump according to claim 1, characterized in that: A first positioning groove (20) is provided at the center of a side surface of the first supporting block (11) close to the second supporting block (14), and a second positioning groove (21) is provided at the center of a side surface of the second supporting block (14) close to the first supporting block (11), and the second positioning groove (21) and the first positioning groove (20) are arranged on the same horizontal line.

5. A flexible variable speed automobile water pump according to claim 1, characterized in that: The inner wall of the connection groove (6) is provided with a plurality of slots (22), and each of the plurality of slots (22) is provided with a rubber strip (23), wherein the rubber strip (23) is inclined from the back to the front in the direction of the second drive shaft (4).

6. A flexible variable speed automobile water pump according to claim 1, characterized in that: The front inner wall of the connecting groove (6) is subjected to anti-slip treatment.

Images