Actuator

Abstract

The utility model relates to the technical field of power actuators, in particular to an actuator. The actuator comprises a shell, a power source, a gear set, a magnetic part and a control panel, the shell is provided with a containing cavity, and the power source, the gear set, the magnetic part and the control panel are all installed in the containing cavity. The gear set at least comprises an input gear and an output gear, the power source can drive the output paper wheel to rotate through the input gear, the magnetic part is installed on the output gear, and a position detection sensor is arranged on the control panel and can recognize the position and the angle of the magnetic part. The device has the advantages that the position detection sensor can identify the position and angle of the magnetic part, so that the rotation angle and state of the output gear can be determined by accurately judging the position and angle of the magnetic part, and the accurate identification and control of the angle of the output gear by the control panel are improved; therefore, the rotation accuracy of the valve element of the multi-way valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power actuators, in particular to an actuator. Background Art

[0002] Actuators are widely used in the field of water valves, including a power source and a gear set. The power source is connected to the gear set, and the gear set is connected to the valve core. The power source can control the rotation of the valve core by driving the gear set to rotate.

[0003] The existing actuators are not precise enough in controlling and identifying the output angle of the gear set. When there is a deviation in the output angle of the gear set, the valve core is prone to under- or over-rotation. Utility Model Content

[0004] Based on this, the utility model provides an actuator for the above technical problem.

[0005] An actuator is applied to a multi-way valve, the actuator comprising: a housing; a power source connected to the housing; a gear set connected to the power source, the gear set comprising at least an input gear and an output gear, the power source can drive the output gear to rotate through the input gear, the output gear is used to connect to the valve core; a magnetic part installed on the output gear; a control board, a position detection sensor is arranged on the control board, the position detection sensor is located between the magnetic part and the control board and directly opposite to the magnetic part.

[0006] With such a configuration, the housing can accommodate components such as a power source and a gear set, protect the various components installed in the accommodating cavity, and facilitate the assembly of the various components to ensure the structural stability of the various components. The power source is used to output power and transmit the power to the input gear. The output gear transmits the power to the valve core through its connection with the valve core of the multi-way valve, driving the valve core to rotate, thereby realizing the switching of the pipeline. A magnetic part is installed on the output gear, and a position detection sensor used in conjunction with the magnetic part is provided on the control panel. The position detection sensor can identify the position and angle of the magnetic part. Therefore, the rotation angle and state of the output gear can be determined by accurately judging the position and angle of the magnetic part, thereby improving the control panel's accurate identification and control of the angle of the output gear, thereby improving the rotation accuracy of the valve core of the multi-way valve.

[0007] In one embodiment, a receiving groove is provided at one axial end of the output gear, and the magnetic member is located in the receiving groove.

[0008] In one embodiment, the shell is provided with a first limiting portion, and one end of the first limiting portion passes through the control board and abuts against the output gear; the part of the output gear that forms the accommodating groove and the magnetic member are both located in the cavity surrounded by the first limiting portion.

[0009] In one embodiment, the housing includes an upper shell and a lower shell, and the upper shell and the lower shell are connected and enclosed to form an accommodating cavity for accommodating the power source and the gear set;

[0010] The first limiting portion is located on the inner wall of the lower shell facing the upper shell. The first limiting portion is movably connected to the output gear and can limit the radial movement of the output gear.

[0011] In one embodiment, the first limiting portion is coaxially arranged with the output gear, and at least a portion of the first limiting portion can extend into the output gear.

[0012] In one embodiment, the first limiting portion is configured as an annular boss structure, an annular groove is formed at one end of the output gear facing the lower shell, and one end of the first limiting portion close to the output gear extends into the annular groove.

[0013] In one embodiment, the housing includes an upper shell and a lower shell, and the upper shell and the lower shell are connected and enclosed to form an accommodating cavity for accommodating the power source and the gear set;

[0014] A second limiting portion is provided on the inner wall of the upper shell facing the lower shell. The second limiting portion is movably connected to the output gear and can limit the radial movement of the output gear.

[0015] In one embodiment, a limiting boss coaxially arranged with the output gear is protruded on the inner wall of the upper shell facing the lower shell, and a positioning groove is formed on the side of the limiting boss facing the output gear, and a through hole is formed at the bottom of the positioning groove, and a part of the output gear can pass through the positioning groove and extend into the through hole, and the limiting boss and the through hole form the second limiting portion.

[0016] In one embodiment, at least two wires are provided between the power source and the control board; an electric clamp is provided at one end of the wire, and the electric clamp is clamped with the power supply terminal of the power source; a plug is provided at the other end of the wire, and the plug is clamped with the control board;

[0017] The actuator also includes a connector, and the connector is connected to the control board through the pin.

[0018] In one embodiment, the control board is provided with a plurality of connection holes, the end of the pin close to the control board extends into the connection hole and has an interference fit with the hole wall of the connection hole, and a deformation hole is provided at the end of the pin extending into the connection hole.

[0019] Compared with the prior art, the actuator provided in the present application installs a magnetic part on the output gear, and a position detection sensor is provided on the control panel for use with the magnetic part. The position detection sensor can identify the magnetic field changes of the magnetic part, thereby outputting a Hall sensing signal. The Hall sensing signal accurately feeds back the rotation angle and operating status of the output gear, and then indirectly controls the rotation angle of the valve core, thereby improving the rotation accuracy of the valve core of the multi-way valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional diagram of one embodiment of the actuator provided by the utility model;

[0021] Figure 2 A partial structural schematic diagram of one embodiment of the actuator provided by the utility model;

[0022] Figure 3 A partial structural schematic diagram of one embodiment of the actuator provided by the utility model;

[0023] Figure 4 A cross-sectional view of one embodiment of the actuator provided by the utility model;

[0024] Figure 5 A partial structural schematic diagram of a power source of one embodiment of the actuator provided by the utility model;

[0025] Figure 6 This is a partial structural diagram of a power source and a connector of one embodiment of the actuator provided by the utility model.

[0026] The symbols in the figure mean the following:

[0027] 100. actuator; 10. housing; 11. upper shell; 111. limiting boss; 112. positioning groove; 113. through hole; 114. second limiting portion; 12. lower shell; 121. first limiting portion; 13. accommodating chamber; 20. power source; 21. worm; 22. output shaft; 23. wire; 24. power supply terminal; 25. electric clamp; 30. gear set; 31. input gear; 32. output gear; 321. ring groove; 322. accommodating groove; 33. transmission gear; 34. gear shaft; 35. sealing ring; 40. magnetic part; 50. control board; 51. hollow; 52. connecting hole; 60. pin; 61. deformation hole; 70. connector; 80. position detection sensor. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0029] It should be noted that when a mechanism is referred to as being "fixed to" or "set on" another mechanism, it may be directly on the other mechanism or there may be a central mechanism. When a mechanism is considered to be "connected to" another mechanism, it may be directly connected to the other mechanism or there may be a central mechanism at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0033] The existing actuators are not precise enough in controlling and identifying the output angle of the gear set. When there is a deviation in the output angle of the gear set, the valve core is prone to rotation that is not in place or is over-positioned, which in turn causes loose connections after pipeline switching, resulting in problems such as medium leakage.

[0034] To address this, the utility model provides an actuator 100, which is applied to a multi-way valve and used in conjunction with the multi-way valve. Through the cooperation of a position detection sensor 80 and a magnetic ring, precise control of the angle of power output by the actuator 100 is achieved to improve the rotation accuracy of the valve core in the multi-way valve.

[0035] See also Figure 1-Figure 3 The actuator 100 includes a housing 10, a power source 20, a gear set 30, a magnetic member 40 and a control board 50. The housing 10 is configured with a receiving cavity 13. The power source 20, the gear set 30, the magnetic member 40 and the control board 50 are all installed inside the receiving cavity 13.

[0036] The gear set 30 at least includes an input gear 31 and an output gear 32. The power source 20 can drive the output gear 32 to rotate through the input gear 31, and the output gear 32 drives the valve core to rotate. The magnetic member 40 is installed on the output gear 32. A position detection sensor 80 is provided on the control board 50. The position detection sensor 80 is located between the magnetic member 40 and the control board 50 and is arranged opposite to the magnetic member 40. The position detection sensor 80 can sense the magnetic field change of the magnetic member 40. The valve core in the utility model can also be replaced by other rotating parts in the non-multi-way valve field, and in this embodiment, the position detection sensor 80 is set as a Hall element.

[0037] In this way, the housing 10 can accommodate components such as the power source 20 and the gear set 30, protect the various components installed in the accommodating chamber 13, and facilitate the assembly of the various components to ensure the structural stability of the various components. The power source 20 is used to output power and transmit the power to the input gear 31. The output gear 32 transmits the power to the valve core through its connection with the valve core of the multi-way valve, driving the valve core to rotate, thereby realizing the switching of the pipeline. A magnetic part 40 is installed on the output gear 32, and a position detection sensor 80 used in conjunction with the magnetic part 40 is provided on the control panel 50. The position detection sensor 80 outputs a Hall sensing signal. The Hall sensing signal accurately feeds back the rotation angle and operating status of the output gear 32, and then indirectly controls the rotation angle of the valve core, thereby improving the rotation accuracy of the valve core.

[0038] Preferably, the magnetic member 40 and the output gear 32 are coaxially arranged. In this way, the magnetic member 40 and the output gear 32 rotate synchronously, and the magnetic field change of the magnetic member 40 identified by the position detection sensor 80 can calculate the rotation angle of the output gear 32, so that the rotation control of the output gear 32 is more accurate.

[0039] To facilitate installation of the magnetic component 40 , a receiving groove 322 is provided at one axial end of the output gear 32 , the opening of the receiving groove 322 faces the control board 50 , the magnetic component 40 is located in the receiving groove 322 , and the magnetic component 40 and the inner wall of the receiving groove 322 are interference fit.

[0040] Of course, in other embodiments, the magnetic member 40 may also be disposed at other positions of the output gear 32 , as long as the position can be read by the position detection sensor 80 to determine the rotation angle of the output gear 32 , and is not limited to the above-mentioned coaxially arranged embodiment.

[0041] In this embodiment, the power source 20 is a motor. In other embodiments, the power source 20 may also be a driving unit such as a steering gear that can drive the input gear 31 to rotate.

[0042] One end of the output shaft 22 of the motor is connected to a worm 21 , which transmits the output force of the motor to the input gear 31 and changes the direction of force transmission. The input gear 31 is set at an angle to the worm 21 . In this embodiment, the output gear 32 is set perpendicular to the worm 21 .

[0043] The gear set 30 also includes multiple gear shafts 34 and multiple transmission gears 33. The gear shafts 34 are connected to the housing 10. Each gear shaft 34 is installed with at least one gear (including a transmission gear 33 or an input gear 31 or an output gear 32). The multiple transmission gears 33 are located between the input gear 31 and the output gear 32, and are used to transmit the power on the input gear 31 to the output gear 32.

[0044] Furthermore, the housing 10 includes an upper shell 11 and a lower shell 12, which are connected and surround a receiving cavity 13. In this way, the upper shell 11 and the lower shell 12 can be processed separately and then assembled together, which reduces the processing difficulty.

[0045] A first limiting portion 121 is provided on the inner wall of the lower shell 12 facing the upper shell 11. The first limiting portion 121 is movably connected to the output gear 32 and can limit the radial movement of the output gear 32. In this way, the first limiting portion 121 can make the axial position of the output gear 32 more stable, and the coaxiality of the path of the output power and the valve core is also higher, avoiding the external element such as the valve core offset in the multi-way valve. Preferably, the first limiting portion 121 is coaxially arranged with the output gear 32, and at least part of the first limiting portion 121 can extend into the output gear 32. In this way, since the first limiting portion 121 extends into the output gear 32, the rotation of the output gear 32 will be constrained by the first limiting portion 121, and when the output gear 32 produces a transverse displacement in the radial direction, it will be limited by the first limiting portion 121, and the first limiting portion 121 is coaxially arranged with the output gear 32, so the axial rotation of the output gear 32 will not interfere with the first limiting portion 121.

[0046] To facilitate the placement of the magnetic component 40, the interior of the first limiting portion 121 is hollow, one axial end of the output gear 32 is located in the space surrounded by the first limiting portion 121, and the part of the output gear 32 that forms the accommodating groove 322 and the magnetic component 40 are both located in the space surrounded by the first limiting portion 121.

[0047] Of course, it can be understood that in other embodiments, the first limiting portion 121 may not extend into the output gear 32, but may be sleeved on the outside of the output gear 32 and spaced from the output gear 32 and also coaxially arranged with the output gear 32. The first limiting portion 121 in this embodiment can also limit the lateral displacement of the output gear 32.

[0048] It should be explained that, in the present embodiment, the vertical direction refers to a direction parallel to the axial direction of the output gear 32 , and the lateral direction refers to a direction perpendicular to the axial direction of the output gear 32 .

[0049] For example, in this embodiment, the first limiting portion 121 is configured as an annular boss structure, an annular groove 321 is provided at one end of the output gear 32 facing the lower shell 12, and an end of the first limiting portion 121 close to the output gear 32 extends into the annular groove 321. In this way, the matching mode of the annular boss and the annular groove 321 is more stable, the two can form a circumferential abutment, and the limiting effect is good.

[0050] Of course, in other embodiments, other cooperating limiting structures may be used. For example, the first limiting portion 121 may be set as a cylindrical boss, and a cylindrical groove may be provided at one end of the output gear 32 facing the lower shell 12. This may also achieve a limiting effect without interfering with the rotation of the output gear 32.

[0051] The control panel 50 is constructed with a hollow 51, and the first limit portion 121 passes through the hollow 51 and is movably connected to the output gear 32. The hollow 51 enables the control panel 50 to avoid the first limit portion 121 and enables the control panel 50 to be installed between the output gear 32 and the lower shell 12, thereby ensuring the setting area of ​​the control panel 50.

[0052] In other embodiments, the control board 50 may also be configured as a combination of multiple pieces to avoid the extension of the first limiting portion 121 , and is not limited to the above-mentioned configuration of the hollow 51 .

[0053] A second limiting portion 114 is provided on the inner wall of the upper shell 11 facing the lower shell 12, and the second limiting portion 114 is movably connected to the output gear 32 and can limit the radial movement of the gear. In this way, the end of the output gear 32 away from the lower shell 12 is also limited, further ensuring the rotation stability of the output gear 32.

[0054] Specifically, a limiting boss 111 is convexly provided on the inner wall of the upper shell 11 facing the lower shell 12 and is coaxially arranged with the output gear 32. A positioning groove 112 is provided on the side of the limiting boss 111 facing the output gear 32. A through hole 113 is provided at the bottom of the positioning groove 112. The other axial end of the output gear 32 can pass through the positioning groove 112 and extend into the through hole 113. The limiting boss 111 and the through hole 113 form the second limiting portion 114. In this way, the limiting boss 111 provides a space for the positioning groove 112. The output gear 32 partially passes through the positioning groove 112 and forms a circumferential abutment with the bottom wall of the positioning groove 112, and is limited by the groove wall of the positioning groove 112 to sway horizontally. The output gear 32 finally extends into the through hole 113. On the one hand, it can be connected to the valve core of the multi-way valve through the through hole 113, and on the other hand, it will be limited by the through hole 113.

[0055] Furthermore, a sealing ring 35 is provided in the positioning groove 112, the inner side of the sealing ring 35 abuts against the output gear 32, and the outer peripheral side abuts against the groove wall of the positioning groove 112 to improve the sealing between the output gear 32 and the groove wall of the positioning groove 112 to prevent medium leakage.

[0056] See also Figure 4-Figure 6At least two wires 23 are provided between the power source 20 and the control board 50. The power source 20 includes at least two power supply terminals 24. An electric clamp 25 is provided at one end of the wire 23, and the electric clamp 25 is clamped with the power supply terminal 24. A pin 60 is provided at the other end of the wire 23, and the pin 60 is clamped with the control board 50. Therefore, the wire 23 does not need to be welded to the power supply terminal 24 and the control board 50, and the connection between the wire 23 and the power supply terminal 24 and the control board 50 is more convenient. The other end is connected to the power source 20, and the actuator 100 also includes a connector 70. The connector 70 is electrically connected to the control board 50 through a plurality of pins 60, and the pins 60 of the connector 70 are clamped with the control board 50. In this way, the electrical connection method between the connector 70 and the control board 50 is convenient and fast to install.

[0057] In other embodiments, the power source 20 may also be connected to the control board 50 by wire welding or other methods, and is not limited to the implementation of the above-mentioned pin 60. There are also many implementation schemes for connecting the connector 70 to the control board 50, which will not be repeated here.

[0058] Furthermore, the control board 50 is provided with a plurality of connection holes 52, and one end of the plug pin 60 close to the control board 50 extends into the connection hole 52 and has an interference fit with the hole wall of the connection hole 52, and a deformation hole 61 is provided at one end of the plug pin 60 extending into the connection hole 52. In this way, since the plug pin 60 has an interference fit with the connection hole 52, the electrical connection between the plug pin 60 and the control board 50 can be ensured to be stable and prevented from falling off, and the deformation hole 61 can reduce the structural strength of the end of the plug pin 60 inserted into the connection hole 52, and provide a deformation space for the end of the plug pin 60 inserted into the connection hole 52, so as to prevent the connection hole 52 from being damaged during the interference fit between the plug pin 60 and the connection hole 52.

[0059] Exemplarily, a plurality of pins 60 are disposed between the connector 70 and the control board 50 , and the plurality of pins 60 are evenly spaced.

[0060] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An actuator, applied to a multi-way valve, characterized in that: The actuator comprises: Housing (10); A power source (20) connected to the housing (10); a gear set (30) connected to the power source (20), the gear set (30) comprising at least an input gear (31) and an output gear (32), the power source (20) can drive the output gear (32) to rotate via the input gear (31), and the output gear (32) is used to be connected to the valve core; A magnetic member (40) mounted on the output gear (32); A control board (50), wherein a position detection sensor (80) is arranged on the control board (50), and the position detection sensor (80) is located between the magnetic member (40) and the control board (50) and directly faces the magnetic member (40).

2. The actuator according to claim 1, characterized in that: An axial end of the output gear (32) is provided with a receiving groove (322), and the magnetic member (40) is located in the receiving groove (322).

3. The actuator according to claim 2, characterized in that: The housing (10) is provided with a first limiting portion (121), one end of the first limiting portion (121) extending out of the control board (50) being in contact with the output gear (32); the portion of the output gear (32) forming the accommodating groove (322) and the magnetic member (40) are both located in a cavity surrounded by the first limiting portion (121).

4. The actuator according to claim 3, characterized in that: The housing (10) comprises an upper shell (11) and a lower shell (12), wherein the upper shell (11) and the lower shell (12) are connected and enclose a receiving chamber (13) for receiving the power source (20) and the gear set (30); The first limiting portion (121) is located on the inner wall of the lower shell (12) facing the upper shell (11), and the first limiting portion (121) is movably connected to the output gear (32) and is capable of limiting the radial movement of the output gear (32).

5. The actuator according to claim 4, characterized in that: The first limiting portion (121) is coaxially arranged with the output gear (32), and at least a portion of the first limiting portion (121) can extend into the output gear (32).

6. The actuator according to claim 5, characterized in that: The first limiting portion (121) is configured as an annular boss structure, an annular groove (321) is provided at one end of the output gear (32) facing the lower shell (12), and an end of the first limiting portion (121) close to the output gear (32) extends into the annular groove (321).

7. The actuator according to any one of claims 1 to 6, characterized in that: The housing (10) comprises an upper shell (11) and a lower shell (12), wherein the upper shell (11) and the lower shell (12) are connected and enclose a receiving chamber (13) for receiving the power source (20) and the gear set (30); A second limiting portion (114) is provided on the inner wall of the upper shell (11) facing the lower shell (12); the second limiting portion (114) is movably connected to the output gear (32) and is capable of limiting the radial movement of the output gear (32).

8. The actuator according to claim 7, characterized in that: A limiting boss (111) is convexly provided on the inner wall of the upper shell (11) facing the lower shell (12) and is coaxially arranged with the output gear (32); a positioning groove (112) is provided on the side of the limiting boss (111) facing the output gear (32); a through hole (113) is provided at the bottom of the positioning groove (112); a portion of the output gear (32) can pass through the positioning groove (112) and extend into the through hole (113); the limiting boss (111) and the through hole (113) form the second limiting portion (114).

9. The actuator according to claim 1, characterized in that: At least two electric wires (23) are provided between the power source (20) and the control board (50); an electric clamp (25) is provided at one end of the electric wire (23), and the electric clamp (25) is clamped with a power supply terminal (24) of the power source (20); a plug pin (60) is provided at the other end of the electric wire (23), and the plug pin (60) is clamped with the control board (50); The actuator also includes a connector (70), and the connector (70) is connected to the control board (50) via the pin (60).

10. The actuator according to claim 9, characterized in that: The control board (50) is provided with a plurality of connection holes (52); one end of the plug pin (60) close to the control board (50) extends into the connection hole (52) and is interference fit with the hole wall of the connection hole (52); and one end of the plug pin (60) extending into the connection hole (52) is provided with a deformation hole (61).

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