CN220539825U - Water pump control device and water pump - Google Patents

Abstract

The present utility model relates to a water pump control device and a water pump. The water pump control device includes: an inner housing including a top and a bottom oppositely disposed, two side oppositely disposed, and an end and an opening oppositely disposed; a rod-shaped member rotatably fixed to the pump cover, a first end extending from the opening into the inner housing, a second end extending from the pump cover, a first receiving portion formed on the first end for receiving the first magnetic element; a float ball assembly coupled to the second end of the rod-like member; a micro switch configured to control the start and stop of the water pump; and a trigger mechanism rotatably fixed to the fixed bracket and configured to rotate in a plane at an angle to a horizontal plane in response to movement of the first end of the rod-like member within the inner housing, thereby triggering and releasing the trigger microswitch, the trigger mechanism being formed with a second receiving portion for receiving the second magnetic element. The device can effectively reduce the friction force between the trigger mechanism and the fixed bracket during rotation.

Description

Water pump control device and water pump

Technical Field

The utility model relates to the technical field of water pumps, in particular to a water pump control device and a water pump.

Background

A water pump is a mechanical device used to deliver or pressurize a liquid. When some water pumps work, the water pumps need to be automatically controlled according to the current water level condition, for example, when the water level in the reservoir reaches a first height, the water pumps are controlled to be started so as to convey liquid; when the water level in the reservoir reaches the second height, the water pump is controlled to stop working. Patent CN102163517B discloses a vertical float switch, which comprises a switch bracket, a micro switch, a Y-shaped rocker arm capable of rotating horizontally to control the micro switch to open and close, and a boom capable of moving up and down. The micro-switch is fixed on the switch bracket, and the root of the rocker arm is pivotally connected with the switch bracket. The two free ends of the rocker arm are provided with magnets, and the upper part of the suspender is positioned between the two free ends of the rocker arm and is provided with magnets. With the up-and-down movement of the boom, the left-and-right swing of the rocker arm can control the start and stop of the micro switch under the action of proper magnetic force between the magnets. However, since the rocker arm of the float switch is horizontally arranged, the root of the rocker arm is influenced by self gravity to increase friction with the switch bracket during swinging, thereby obstructing swinging of the rocker arm.

Disclosure of Invention

In order to solve one or more of the above problems in the prior art, various embodiments of the present utility model provide a water pump control device and a water pump including the same.

According to one aspect of the present utility model, a water pump control device includes: an inner housing provided in a pump cover of the water pump and including a top and a bottom provided opposite to each other, two side portions provided opposite to each other, and an end portion and an opening portion provided opposite to each other; a rod-shaped member rotatably fixed to the pump cover, a first end of the rod-shaped member extending from the opening portion into the inner housing, a second end of the rod-shaped member extending out of the pump cover, a first receiving portion being formed on the first end of the rod-shaped member for receiving a first magnetic element; a float ball assembly coupled to the second end of the rod and configured to rotate the rod in response to rising and falling of a water level, such that the first end of the rod moves within the inner housing; a micro switch disposed within the pump cover and configured to control the start and stop of the water pump; a trigger mechanism rotatably fixed to a fixed bracket in the pump cover and configured to rotate in a plane at an angle to a horizontal plane in response to movement of the first end of the rod-like member in the inner housing to reduce friction between the trigger mechanism and the fixed bracket when rotated, thereby triggering and de-triggering the micro switch to control starting and stopping of the water pump, the trigger mechanism being formed with a second receiving portion for receiving a second magnetic element; wherein, the floating ball component responds to the rising of the water level to drive the rod-shaped piece to rotate around a first direction, so that the first end of the rod-shaped piece moves towards one of the bottom and the top of the inner shell, and then the second magnetic element and the first magnetic element are mutually attracted, thereby driving the triggering mechanism to trigger the micro switch; the floating ball component responds to the lowering of the water level to drive the rod-shaped member to rotate around a second direction opposite to the first direction, so that the first end of the rod-shaped member moves towards the other of the bottom and the top of the inner shell, and the second magnetic element is separated from the first magnetic element, so that the triggering mechanism is driven to trigger the micro switch.

In one embodiment, the triggering mechanism is further provided with a third accommodating part for accommodating a third magnetic element, wherein when the first end of the rod-shaped element moves towards one of the bottom and the top of the inner shell, the first magnetic element and the third magnetic element repel each other, and the second magnetic element and the first magnetic element attract each other, so that the triggering mechanism is driven to trigger the micro switch; when the first end of the rod-shaped piece moves towards the other of the bottom and the top of the inner shell, the second magnetic element is separated from the first magnetic element, so that the triggering mechanism is driven to trigger the micro switch to be released.

In one embodiment, the second magnetic element is opposite in face polarity to the first magnetic element and the third magnetic element is the same in face polarity to the first magnetic element.

In one embodiment, the second and third receiving portions are disposed adjacent to the two side portions of the inner case, respectively.

In one embodiment, the micro switch is disposed on the fixed bracket.

In one embodiment, the end of the inner housing is disposed on the micro switch.

In one embodiment, the trigger mechanism at least partially surrounds the micro-switch and the inner housing.

In one embodiment, the trigger mechanism comprises: a mounting end rotatably fixed to the fixed bracket; a first bending portion extending from the mounting end portion and surrounding the micro switch and a first portion of the inner housing; and a second bending portion extending from the first bending portion and surrounding the micro switch and a second portion of the inner housing; wherein the trigger mechanism rotates in a plane at an angle to a horizontal plane in response to movement of the first end of the rod-like member within the inner housing to reduce friction between the mounting end and the fixed bracket when the trigger mechanism rotates.

In one embodiment, the angle is 90 degrees.

In one embodiment, a through hole is formed in a pump cover of the water pump, and the opening portion of the inner housing is coupled to the pump cover and communicates with the through hole for the first end of the rod-like member to pass through the through hole and enter the inner housing from the opening portion.

In the water pump control device of the embodiments of the present utility model, the trigger mechanism is rotatably fixed to the fixed bracket in the pump cover and rotates in a plane at an angle to the horizontal plane in response to the movement of the first end of the rod-like member in the inner housing, thereby triggering and releasing the trigger micro switch to control the start and stop of the water pump. Through setting up the position of trigger mechanism and fixed bolster so that trigger mechanism can rotate in the plane of forming an angle with the horizontal plane, can effectively reduce the trigger mechanism when rotating with the frictional force between the fixed bolster to improve the response speed of whole device.

A water pump according to another aspect of the present utility model includes the water pump control device in the above embodiments.

Drawings

The embodiments are shown and described with reference to the drawings. The drawings serve to illustrate the basic principles and thus only show aspects necessary for understanding the basic principles. The figures are not to scale. In the drawings, the same reference numerals have been used to indicate the same or similar features.

Fig. 1 shows a schematic diagram of an exemplary water pump according to an embodiment of the present utility model.

Fig. 2 shows a schematic diagram of an exemplary water pump control device according to an embodiment of the present utility model.

Fig. 3 shows a schematic view of an exemplary trigger mechanism and micro-switch in a first state according to an embodiment of the utility model.

Fig. 4 illustrates a schematic view of an exemplary trigger mechanism and micro-switch in a second state according to an embodiment of the present utility model.

Detailed Description

The making and using of the embodiments are discussed in detail below. It should be understood, however, that the detailed description and the specific examples, while indicating specific ways of making and using the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model. The structural position of the various components as described, such as the directions of up, down, top, bottom, etc., is not absolute, but rather relative. When the individual components are arranged as shown in the figures, these directional expressions are appropriate, but when the position of the individual components in the figures changes, these directional expressions also change accordingly.

The present utility model provides a water pump control device, a trigger mechanism of which is rotatably fixed on a fixed bracket in a pump cover and rotates in a plane forming an angle with a horizontal plane in response to movement of a first end of a rod-shaped member in an inner housing, thereby triggering and releasing a trigger micro switch to control the start and stop of a water pump. Through setting up trigger mechanism and fixed bolster for the inclination of horizontal plane so that trigger mechanism can rotate in the plane of an angle with the horizontal plane, can effectively reduce the trigger mechanism when rotating with the frictional force between the fixed bolster to improve the response speed of whole device. The water pump control device of the embodiments of the utility model can be suitable for various types of water pumps which need to be started and stopped according to the water level condition. Such as submersible pumps, submerged pumps, etc.

Embodiments of the present utility model will be described in detail below with reference to fig. 1 to 4. Fig. 1 shows a schematic diagram of an exemplary water pump 10 according to an embodiment of the present utility model. The exemplary water pump 10 may be, for example, a submersible pump or submerged pump, etc. Taking the example water pump 10 as a submersible pump, in use, the entire water pump may be submerged for use in extracting water, such as deep well water, river water, or a reservoir, to a destination.

Referring to fig. 1, an exemplary water pump 10 includes a pump body portion 11, a pump cover 12, and a water pump control device 13. The pump body portion 11 may include components such as a pump body (not shown) and a motor (not shown). The pump body defines a fluid inlet, a fluid outlet, and a fluid passage connecting the fluid inlet and the fluid outlet. In addition, the pump body can also comprise parts such as impellers. As will be appreciated by those skilled in the art, they are not described in detail herein. The pump cover 12 is mounted on the pump body portion 11. The pump cover 12 defines a receiving chamber to receive at least a portion of the water pump control device 13.

Referring to fig. 2 in combination with fig. 1, the water pump control device 13 includes a rod member 131, a float assembly 132, a micro switch 133, a trigger mechanism 134, and an inner housing 135. The inner housing 135 is disposed within the pump cap 12 and includes a top portion 1351 and a bottom portion 1352 disposed opposite the top portion 1351, a left side portion 1353 and a right side portion 1354 disposed opposite the left side portion 1353, and an end portion 1355 and an opening portion 1356 disposed opposite the end portion 1355.

The rod 131 is rotatably fixed to the pump cover 12. In one embodiment, the rod 131 may be mounted to the pump cap 12 by a cylindrical pin 1311, the rod 131 rotating about the cylindrical pin 1311 as a fulcrum and rotation axis. By applying forces in different directions to the ends of the rod 131, the rod 131 may be rotated about different directions (e.g., clockwise or counter-clockwise).

The rod 131 includes oppositely disposed first and second ends 1312, 1313. The first end 1312 extends from the opening 1356 into the inner housing 135 and the second end 1313 extends out of the pump cover 12. A first accommodating portion 1314 is formed on the first end 1312 of the rod-like member 131 for accommodating the first magnetic element 1315. In one embodiment, the pump cap 12 may have a through hole 121 formed therein, an opening 1356 of the inner housing 135 is coupled to the pump cap 12 and communicates with the through hole 121 for the first end 1312 of the rod 131 to pass through the through hole 121 and enter the inner housing 135 from the opening 1356, and a second end 1313 is located outside the pump cap 12. In one embodiment, the rod 131 may be secured within the through bore 121 of the pump cap 12 by the engagement of the mounting assembly 136 with the cylindrical pin 1311. In assembly, the swivel bracket 1361 of the mounting assembly 136 is first placed in the through hole 121, then the rod 131 is passed through the swivel bracket 1361, the rod 131 is fixed to the swivel bracket 1361 by the cylindrical pin 1311, and finally the aforementioned components are fastened in the through hole 121 by the locking member 1362 of the mounting assembly 136. In one embodiment, the coupling of the opening 1356 of the inner housing 135 to the pump cap 12 may be provided with a seal to prevent water and/or moisture from entering other areas of the pump cap 12 other than the inner housing 135.

The float assembly 132 is coupled to the second end 1313 of the shaft 131. When the water pump 10 is operated submerged, the float ball assembly 132 may rotate the lever 131 in response to the rising and falling of the water level. In one embodiment, floating ball assembly 132 includes a guide rod 1321 and a floating ball 1322 that fits over guide rod 1321. The first end 1323 of the stem 1322 is coupled to the second end 1313 of the rod 131. When the water level rises, the floating ball 1322 moves along the guide rod 1321 to the first end 1323 thereof in response to the rise of the water level, and then contacts and applies a force to the second end 1313 of the rod 131 to rotate the rod 131 around the first direction (e.g., counterclockwise). When the water level drops, the floating ball 1322 moves along the guide rod 1321 to a second end 1324 opposite to the first end 1323 thereof in response to the drop of the water level, and thus contacts and applies a force to the bottom of the guide rod 1321, thereby rotating the rod 131 around a second direction (e.g., clockwise). In other embodiments, the float assembly 132 may also be comprised of a float and a float cord. One end of the float rope is coupled to the float, and the other end is coupled to the second end 1313 of the rod 131. When the water level rises, the float ball rises in response to the rise of the water level, and when the float ball rises to a certain height, it applies an upward pulling force to the second end 1313 of the rod 131 by pulling the float ball rope, so as to drive the rod 131 to rotate around the first direction. When the water level is lowered, the float ball is lowered in response to the lowering of the water level, and when the float ball is lowered to a certain height, it applies a downward pulling force to the second end 1313 of the rod 131 by pulling the float ball rope, thereby driving the rod 131 to rotate around the second direction.

A microswitch 133 and trigger mechanism 134 are disposed within the pump cap 12. The micro switch 133 is configured to control the start and stop of the water pump 10. The trigger mechanism 134 is configured to trigger or deactivate the micro-switch 133 to control the start and stop of the water pump 10. In one embodiment, as shown in fig. 3 and 4, the micro switch 133 may be provided with a switch contact 1331. When the trigger mechanism 134 presses the switch contact 1331, the micro switch 133 can be triggered, so that the water pump 10 is controlled to start; when the trigger mechanism 134 is far from the switch contact 1331, the micro switch 133 can be released to control the water pump 10 to stop working.

The trigger mechanism 134 is rotatably fixed to the fixed bracket 137. In one embodiment, the trigger mechanism 134 may be mounted on the fixed bracket 137 using a cylindrical pin 1342, and the trigger mechanism 134 rotates about the cylindrical pin 1342 as a fulcrum and a rotation axis. Of course, the triggering mechanism 134 may be rotatably fixed to the fixed bracket 137 in other suitable manners, which will be understood by those skilled in the art, and will not be described herein. The trigger mechanism 134 may be made of plastic or other suitable material.

In one embodiment, the microswitch 133 may also be mounted on the fixed bracket 137 adjacent the trigger mechanism 134. An end 1355 of the inner housing 135 may be disposed on the micro switch 133. The trigger mechanism 134 may be disposed at least partially around the micro-switch 133 and the inner housing 135.

Referring to fig. 3 and 4 in combination with fig. 2, in one embodiment, the trigger mechanism 134 may include a mounting end 1341, a first fold 1347, and a second fold 1348. The mounting end 1341 is rotatably mounted to the fixed bracket 137 by a cylindrical pin 1342. The first fold 1347 extends from the mounting end 1341 and surrounds the microswitch 133 and a first portion of the inner housing 135, i.e., a right side 1354 and a portion of the bottom 1352 of the inner housing 135. The second fold 1348 extends from the first fold 1347 and surrounds the micro switch 133 and the second portion of the inner housing 135, i.e., the other portion of the bottom 1352 and the left side 1353 of the inner housing 135. By this arrangement, the overall volume of the trigger mechanism 134 and the micro switch 133 can be reduced.

The trigger mechanism 134 has a second receiving portion 1343 and a third receiving portion 1345 formed thereon for receiving a second magnetic element 1344 and a third magnetic element 1346, respectively. In one embodiment, the second receptacle 1343 may be disposed on the trigger mechanism 134 adjacent the right side 1354 of the inner housing 135 and the third receptacle 1345 may be disposed on the trigger mechanism 134 adjacent the left side 1353 of the inner housing 135 such that a first side of the first magnetic element 1315 is adjacent the second magnetic element 1344 and a second side of the first magnetic element 1315 opposite the first side is adjacent the third magnetic element 1346.

The first, second and third magnetic elements 1315, 1344, 1346 may be magnetically-bearing elements such as magnets. When the first magnetic element 1315, the second magnetic element 1344, and the third magnetic element 1346 are respectively accommodated in the first accommodating portion 1314, the second accommodating portion 1343, and the third accommodating portion 1345, the faces of the second magnetic element 1344 adjacent to the first magnetic element 1315 are opposite in polarity, for example, the first side of the first magnetic element 1315 is an S-pole, and the faces of the second magnetic element 1344 adjacent to the first side is an N-pole; the polarity of the faces of the third magnetic element 1346 adjacent to both the first magnetic element 1315 is the same, e.g., the second side of the first magnetic element 1315 is an N-pole and the face of the third magnetic element 1346 adjacent to the second side is an N-pole.

Setting the polarities of the first, second and third magnetic elements 1315, 1344, 1346 in the manner described above may be such that when the first end 1312 of the rod 131 moves toward the bottom 1352 of the inner housing 135, the first and third magnetic elements 1315, 1346 repel one another and the second magnetic element 1344 interacts with the first magnetic element 1315, thereby driving the trigger mechanism 134 to trigger the microswitch 133, as shown in fig. 3; when the first end 1312 of the rod-like member 131 moves toward the top 1351 of the inner housing 135, the second magnetic element 1344 disengages the first magnetic element 1315, thereby causing the trigger mechanism 134 to deactivate the micro-switch 133, as shown in fig. 4.

By providing the trigger mechanism 134 and the fixed bracket 137 with an angle of inclination relative to a horizontal plane (here, "horizontal plane" refers to a plane formed by relatively completely stationary water, and also refers to a plane parallel to this plane when the water pump 10 is placed in operation in, for example, a reservoir, "horizontal plane", i.e., a plane formed by water in the reservoir), the trigger mechanism 134 can be caused to rotate in a plane at an angle to the horizontal plane (i.e., a target plane) in response to movement of the first end 1312 of the lever 131 within the inner housing 135, thereby triggering and de-triggering the micro switch 133 to control activation and deactivation of the water pump 10.

Since the trigger mechanism 134 rotates in a plane at an angle to the horizontal plane, the friction between the trigger mechanism 134 and the fixed bracket 137 during rotation can be effectively reduced, thereby improving the response speed of the whole device.

In one embodiment, the angle between the target plane and the horizontal plane may be 20 to 160 degrees. In one embodiment, the angle between the target plane and the horizontal may be 45 to 145 degrees. In one embodiment, the angle between the target plane and the horizontal may be about 90 degrees, in which embodiment the trigger mechanism 134 rotates in a plane substantially perpendicular to the horizontal.

In operation, as the water level rises, the ball 1322 moves along the guide rod 1321 to its first end 1323, thereby contacting and applying a force to the second end 1313 of the rod 131 to rotate the rod 131 about a first direction (e.g., counterclockwise). The rod-shaped member 131 rotates around the first direction so that the first end 1312 moves towards the bottom 1352 of the inner housing 135, and thus the first magnetic element 1315 and the third magnetic element 1346 repel each other and the second magnetic element 1344 and the first magnetic element 1315 attract each other, so that the triggering mechanism 134 is driven to trigger the micro switch 133 to control the water pump 10 to start, as shown in fig. 3.

When the water level drops, the floating ball 1322 moves along the guide rod 1321 to the second end 1324 thereof, and then contacts with and applies force to the bottom of the guide rod 1321, so as to rotate the lever 131 around the second direction (e.g., clockwise). The rod-shaped member 131 rotates around the second direction so that the first end 1312 moves towards the top 1351 of the inner housing 135, and the second magnetic element 1344 is separated from the first magnetic element 1315, so that the triggering mechanism 134 is driven to deactivate the micro switch 133, so as to control the water pump 10 to stop working, as shown in fig. 4.

So reciprocating, the water pump control device 13 can effectively control the water pump 10 to start when the water level reaches the first height so as to carry out liquid delivery; and stopping working when the water level reaches the second height.

It will be appreciated that in other embodiments, the configuration of the rod-like member and the positioning of the second receiving portion 1343 and the third receiving portion 1345 on the trigger mechanism 135 may be configured such that when the water level rises, the first end 1312 of the rod-like member 131 moves toward the top 1351 of the inner housing 135, such that the first magnetic element 1315 and the third magnetic element 1346 repel each other and the second magnetic element 1344 and the first magnetic element 1315 attract each other, and when the water level falls, the first end 1312 of the rod-like member 131 moves toward the bottom 1352 of the inner housing 135, such that the second magnetic element 1344 disengages the first magnetic element 1315.

It is understood that in other embodiments, the third accommodating portion 1345 and the third magnetic element 1346 may be omitted. For example, when the first magnetic element 1315 and the second magnetic element 1344 are properly sized, the two can directly engage each other without resorting to a repulsive force between the third magnetic element 1346 and the first magnetic element 1315, whereby the third receptacle 1345 and the third magnetic element 1346 can be omitted.

The fixed mount 137 may be a separate mount disposed within the pump cap 12. Alternatively, a portion of the inner wall of the pump cap 12 may also serve as a fixed bracket 137. In this case, the mounting end 1341 of the trigger mechanism 134 is directly rotatably fixed to the inner wall of the pump cover 12.

It is understood that the embodiments shown in fig. 1 to 4 only show and label main implementation units or components in the water pump control device and the water pump comprising the water pump control device according to the present utility model, and the shapes and arrangement of the units or components are only schematic and not limiting, and the water pump control device and the water pump comprising the water pump control device can take other shapes and sizes of the units or components without departing from the spirit and scope of the present utility model.

While the foregoing has described the technical content and features of the present utility model, it will be appreciated that those skilled in the art, upon attaining the teachings of the present utility model, may make variations and improvements to the concepts disclosed herein, which fall within the scope of the present utility model. The above description of embodiments is illustrative and not restrictive, and the scope of the utility model is defined by the claims.

Claims (11)

1. A water pump control device, comprising:

an inner housing provided in a pump cover of the water pump and including a top and a bottom provided opposite to each other, two side portions provided opposite to each other, and an end portion and an opening portion provided opposite to each other;

a rod-shaped member rotatably fixed to the pump cover, a first end of the rod-shaped member extending from the opening portion into the inner housing, a second end of the rod-shaped member extending out of the pump cover, a first receiving portion being formed on the first end of the rod-shaped member for receiving a first magnetic element;

a float ball assembly coupled to the second end of the rod and configured to rotate the rod in response to rising and falling of a water level, such that the first end of the rod moves within the inner housing;

a micro switch disposed within the pump cover and configured to control the start and stop of the water pump;

a trigger mechanism rotatably fixed to a fixed bracket in the pump cover and configured to rotate in a plane at an angle to a horizontal plane in response to movement of the first end of the rod-like member in the inner housing to reduce friction between the trigger mechanism and the fixed bracket when rotated, thereby triggering and de-triggering the micro switch to control starting and stopping of the water pump, the trigger mechanism being formed with a second receiving portion for receiving a second magnetic element;

wherein, the floating ball component responds to the rising of the water level to drive the rod-shaped piece to rotate around a first direction, so that the first end of the rod-shaped piece moves towards one of the bottom and the top of the inner shell, and then the second magnetic element and the first magnetic element are mutually attracted, thereby driving the triggering mechanism to trigger the micro switch; the floating ball component responds to the lowering of the water level to drive the rod-shaped member to rotate around a second direction opposite to the first direction, so that the first end of the rod-shaped member moves towards the other of the bottom and the top of the inner shell, and the second magnetic element is separated from the first magnetic element, so that the triggering mechanism is driven to trigger the micro switch.

2. The water pump control device according to claim 1, wherein a third accommodating portion is further formed on the triggering mechanism for accommodating a third magnetic element, wherein when the first end of the rod-like member moves toward one of the bottom and the top of the inner housing, the first magnetic element and the third magnetic element repel each other and the second magnetic element and the first magnetic element attract each other, thereby driving the triggering mechanism to trigger the micro switch; when the first end of the rod-shaped piece moves towards the other of the bottom and the top of the inner shell, the second magnetic element is separated from the first magnetic element, so that the triggering mechanism is driven to trigger the micro switch to be released.

3. The water pump control device of claim 2, wherein the second magnetic element has an opposite polarity to a face of the first magnetic element adjacent thereto, and wherein the third magnetic element has the same polarity to a face of the first magnetic element adjacent thereto.

4. The water pump control device of claim 2, wherein the second and third receiving portions are disposed adjacent to the two side portions of the inner housing, respectively.

5. The water pump control device of claim 1, wherein the micro switch is disposed on the fixed bracket.

6. The water pump control device of claim 5, wherein the end of the inner housing is disposed on the micro-switch.

7. The water pump control device of claim 6, wherein the trigger mechanism at least partially surrounds the micro-switch and the inner housing.

8. The water pump control device of claim 7, wherein the trigger mechanism comprises:

a mounting end rotatably fixed to the fixed bracket;

a first bending portion extending from the mounting end portion and surrounding the micro switch and a first portion of the inner housing; and

a second bending portion extending from the first bending portion and surrounding the micro switch and a second portion of the inner housing;

wherein the trigger mechanism rotates in a plane at an angle to a horizontal plane in response to movement of the first end of the rod-like member within the inner housing to reduce friction between the mounting end and the fixed bracket when the trigger mechanism rotates.

9. The water pump control device according to claim 1 or 2, wherein the angle is 90 degrees.

10. The water pump control device according to claim 1 or 2, wherein a through hole is formed in a pump cover of the water pump, and the opening portion of the inner housing is coupled to the pump cover and communicates with the through hole so that the first end of the rod-like member passes through the through hole and enters the inner housing from the opening portion.

11. A water pump comprising a water pump control device according to any one of claims 1 to 10.