Control valve

Abstract

The utility model provides a control valve which comprises a valve body assembly and an actuator assembly, the valve body assembly comprises a first valve shell, a second valve shell, a valve cover, a first valve element and a second valve element, the first valve shell is arranged below the valve cover and forms a first installation cavity with the valve cover, and the second valve shell is arranged below the first valve shell and forms a second installation cavity with the first valve shell. The first valve element and the second valve element are arranged in the second mounting cavity; the actuator assembly is arranged in the first mounting cavity and comprises a circuit board, a motor connected with the circuit board and a transmission gear set connected with the motor, the first valve element and the second valve element. The circuit board controls the motor to rotate, the motor drives the transmission gear set to rotate, and the first valve element and the second valve element are driven to rotate through the transmission gear set. The two valve elements are driven by one motor to rotate and share the three duplicate gears and the worm at the same time, so that the number of parts is small, and the production and manufacturing cost is reduced; the two valve elements share one valve shell, rotation control over the two valve elements is achieved through transmission of the actuator assembly and cooperation of the protruding part and the limiting part, the structure is more compact, and the installation area needed on an integrated module is reduced.

Description

Technical Field

[0001] This utility model relates to the field of control valve technology, and in particular to a dual-linkage control valve. Background Technology

[0002] In existing technologies, thermal management systems for new energy vehicles are developing towards integration. To achieve different fluid flow paths under various operating conditions or modes, these systems typically use multiple fluid control valves. Increasing the number of fluid control valves raises the cost of the thermal management system and requires a larger installation area in the integrated module. To address these issues, multiple control valves are often integrated into a single valve, but this usually involves multiple motors for control, resulting in a larger overall structure and higher cost.

[0003] Therefore, it is necessary to provide a single-motor controlled dual-linkage control valve to overcome the defects mentioned above. Utility Model Content

[0004] The purpose of this invention is to provide a control valve.

[0005] According to one aspect of the present invention, a control valve is provided, comprising:

[0006] A valve body assembly, comprising a first valve housing, a second valve housing, a valve cover, a first valve core, and a second valve core, wherein the first valve housing is disposed below the valve cover and forms a first mounting cavity with the valve cover, the second valve housing is disposed below the first valve housing and forms a second mounting cavity with the first valve housing, and the first valve core and the second valve core are disposed within the second mounting cavity;

[0007] An actuator assembly is disposed within a first mounting cavity. The actuator assembly includes a circuit board, a motor connected to the circuit board, and a transmission gear set connected to the motor, a first valve core, and a second valve core.

[0008] The circuit board controls the rotation of the motor, which in turn drives the transmission gear set to rotate, which in turn drives the first valve core and the second valve core to rotate.

[0009] Preferably, the transmission gear set includes a worm, a first double gear, a second double gear, a third double gear, a first output gear, and a second output gear. The worm is mounted on the output shaft of the motor and meshes with the lower gear of the first double gear. The upper gear of the first double gear meshes with the upper gear of the second double gear. The lower gear of the second double gear meshes with the lower gear of the third double gear. The upper gear of the third double gear meshes with both the first and second output gears. The first output gear drives the first valve core to rotate, and the second output gear drives the second valve core to rotate. The first valve core and the first output gear are connected by a splined shaft.

[0010] Preferably, the splined shaft is coaxially arranged with the first output gear, and the splined shaft includes an external spline portion that mates with the first valve core and a protrusion portion that mates with the first output gear.

[0011] Preferably, the first output gear includes a limiting part that cooperates with the protrusion. During the rotation of the first output gear, the limiting part contacts the protrusion and drives the spline shaft to rotate, thereby driving the first valve core to rotate through the spline shaft.

[0012] Preferably, the first output gear includes a first gear plate portion and a first sleeve portion coaxially arranged with the first gear plate portion and extending axially along the first gear plate portion. The limiting portion is disposed inside the first sleeve portion. The radial cross-section of the limiting portion is fan-shaped. The limiting portion is coaxially arranged with the first gear plate portion. The periphery of the limiting portion inside the sleeve is a movable space for the protrusion to rotate.

[0013] Preferably, the radial cross-section of the protrusion is fan-shaped, and the protrusion is disposed within the active space.

[0014] Preferably, the spline shaft further includes a connecting rod portion passing through the first gear plate portion, the connecting rod portion being connected to a potential element on the circuit board and capable of driving the potential element to rotate, thereby detecting the rotation angle of the first valve core.

[0015] Preferably, the second valve core includes a splined valve shaft located at the top, and the second output gear includes a second gear disk portion and a second sleeve portion coaxially arranged with the second gear disk portion and extending axially along the second gear disk portion. The inner wall of the second sleeve portion is provided with an internal spline that cooperates with the splined valve shaft.

[0016] Preferably, the upper surfaces of the first output gear, the second output gear, and the upper gear of the third double gear are all provided with positioning marks for positioning during gear installation.

[0017] Preferably, the circuit board is disposed above the first output gear and the second output gear.

[0018] Compared with the prior art, the control valve provided by this utility model has the following advantages:

[0019] Due to the adoption of the above technical solution, this utility model has the advantages of simple structure, ingenious design and low cost. It drives the two valve cores to rotate and only requires one motor. At the same time, it shares three double gears and worm gears, reducing the number of parts and reducing the manufacturing cost. The two valve cores share one valve shell. By using actuator assembly transmission and the cooperation of protrusion and limiting part, the rotation control of the two valve cores is realized. The structure is more compact and the installation area required on the integrated module is reduced. Attached Figure Description

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0021] Figure 1 This is a perspective view of the control valve of this utility model;

[0022] Figure 2 This is an exploded view of the control valve of this utility model;

[0023] Figure 3 This is a top view of the control valve of this utility model with the valve cover removed;

[0024] Figure 4 The three-dimensional representation of the actuator assembly of this utility model Figure 1 ;

[0025] Figure 5 The three-dimensional representation of the actuator assembly of this utility model Figure 2 ;

[0026] Figure 6 This is an exploded view of the first output gear and splined shaft of this utility model;

[0027] Figure 7 This is a sectional view of the first output gear of this utility model after it is fitted with the spline shaft;

[0028] Figure 8 This is a perspective view of the first valve core of this utility model;

[0029] Figure 9 This is a perspective view of the second valve core of this utility model.

[0030] Among them, 10 is the valve body assembly; 101 is the first valve housing; 102 is the second valve housing; 103 is the valve cover; 104 is the first mounting cavity; 105 is the second mounting cavity; 106 is the first valve core; 107 is the second valve core; 1071 is the splined valve shaft; 20 is the actuator assembly; 201 is the motor; 202 is the worm gear; 203 is the first double gear; 204 is the second double gear; 205 is the third double gear; 206 is the first output gear; 2061 is the first gear plate; 2062 is the first sleeve; 2063 is the limiting part; 2064 is the moving space; 207 is the second output gear; 2071 is the second gear plate; 2072 is the second sleeve; 208 is the circuit board; 209 is the splined shaft; 2091 is the external spline part; 2092 is the protrusion; 2093 is the connecting rod part; and 210 is the positioning mark. Detailed Implementation

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] To keep the drawings concise, only the parts relevant to this invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0033] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0034] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0037] See Figure 1 and Figure 2 This embodiment discloses a control valve that controls two valve cores through a single motor 201. The control valve includes two parts: a valve body assembly 10 and an actuator assembly 20.

[0038] The valve body assembly 10 includes a first valve housing 101, a second valve housing 102, and a valve cover 103 stacked sequentially. The first valve housing 101 is disposed below the valve cover 103 and forms a first mounting cavity 104 with the valve cover 103. The second valve housing 102 is disposed below the first valve housing 101 and forms a second mounting cavity 105 with the first valve housing 101. The valve body assembly 10 also includes a first valve core 106 and a second valve core 107 disposed within the second mounting cavity 105. The first valve core 106 and the second valve core 107 are disposed adjacent to each other.

[0039] See Figure 3 , Figure 4 and Figure 5 The actuator assembly 20 is disposed within the first mounting cavity 104. The actuator assembly 20 includes a circuit board 208, a motor 201 electrically connected to the circuit board 208, and a transmission gear set connected to the motor 201. The circuit board 208 controls the rotation of the motor 201, the motor 201 drives the transmission gear set to rotate, and the transmission gear set drives the first valve core 106 and the second valve core 107 to rotate.

[0040] The transmission gear set includes a worm gear 202, a first double gear 203, a second double gear 204, a third double gear 205, a first output gear 206, and a second output gear 207. A circuit board 208 is positioned above the first output gear 206 and the second output gear 207.

[0041] The motor 201 is electrically connected to the circuit board 208. The worm gear 202 is mounted on the output shaft of the motor 201 and meshes with the lower gear of the first double gear 203. The upper gear of the first double gear 203 meshes with the upper gear of the second double gear 204, and the lower gear of the second double gear 204 meshes with the lower gear of the third double gear. The first output gear 206 and the second output gear 207 both mesh with the upper gear of the third double gear 205. In this embodiment, the first output gear 206 and the second output gear 207 are located on opposite sides of the third double gear 205. The first output gear 206 drives the first valve core 106 to rotate, and the second output gear 207 drives the second valve core 107 to rotate.

[0042] See Figure 6 , Figure 7 and Figure 8 The first valve core 106 and the first output gear 206 are connected via a splined shaft 209. The splined shaft 209 is coaxially arranged with the first output gear 206. The splined shaft 209 comprises three parts, from bottom to top: an outer spline portion 2091, a protrusion portion 2092, and a connecting rod portion 2093. The outer spline portion 2091 is used to spline engage with the first valve core 106. The protrusion portion 2092 is used to engage with the first output gear 206, and the radial cross-section of the protrusion portion 2092 is fan-shaped. The connecting rod portion 2093 passes through the first output gear 206 and is connected to a potential element on the circuit board 208, and can drive the potential element to rotate, thereby detecting the rotation angle of the first valve core 106.

[0043] The first output gear 206 includes a first gear disk portion 2061 and a first sleeve portion 2062 coaxially arranged with and extending axially along the first gear disk portion 2061. The first gear disk portion 2061 has a through hole at its center for the connecting rod portion 2093 to pass through. The first sleeve portion 2062 has a limiting portion 2063 that mates with the protrusion 2092. The limiting portion 2063 has a fan-shaped radial cross-section and is coaxially arranged with the first gear disk portion 2061. The periphery of the limiting portion 2063 within the sleeve forms an active space 2064 for the protrusion 2092 to be positioned and rotate. During the rotation of the first output gear 206, the limiting portion 2063 contacts the protrusion 2092, causing the spline shaft 209 to rotate, thereby driving the first valve core 106 to rotate via the spline shaft 209.

[0044] See Figure 5 and Figure 9The second valve core 107 includes a splined valve shaft 1071 located at the top, and the second output gear 207 includes a second gear disk portion 2071 and a second sleeve portion 2072 coaxially arranged with and extending axially along the second gear disk portion 2071. The inner wall of the second sleeve portion 2072 is provided with an internal spline that mates with the splined valve shaft 1071. The angle detection principle of the second valve core 107 is that the Hall sensor on the circuit board 208 detects the rotation angle of the magnet located at the shaft end of the second valve core 107 in a remote manner, thereby obtaining the rotation angle of the second valve core 107.

[0045] In this embodiment, a single motor 201 drives the worm gear 202 to rotate, which in turn drives the first double gear 203 to rotate. The first double gear 203 drives the second double gear 204 to rotate, and the second double gear 204 drives the third double gear 205 to rotate. The third double gear 205 simultaneously drives the first output gear 206 and the second output gear 207 to rotate. During the rotation of the first output gear 206, the limiting part 2063 inside its first sleeve 2062 rotates synchronously until it contacts the protrusion 2092, causing the protrusion 2092 to rotate synchronously. This, in turn, rotates the first valve core 106 to a set position via the spline shaft 209. After the first valve core 106 reaches the designated position, the motor 201 reverses, driving the first double gear 203, the second double gear 204, and the third double gear 205 to rotate in reverse. The third double gear 205 simultaneously drives the first output gear 206 and the second output gear 207 to rotate in reverse. The reverse stroke of the first output gear 206 is equal to the circumferential arc length of the movable space 2064 within the first sleeve portion 2062. That is, during this reverse rotation, the protrusion 2092 separates from the limiting portion 2063 and rotates within the movable space 2064, ensuring that when the first output gear 206 reverses, the first valve core 106 does not rotate; only the second output gear 207 drives the second valve core 107 to reverse until it reaches the set position. Furthermore, the maximum rotation angle of the second valve core 107 is equal to the maximum rotation angle of the protrusion 2092 within the movable space 2064. Therefore, the rotation position setting of the second valve core 107 should meet the above requirements.

[0046] The upper surfaces of the first output gear 206, the second output gear 207, and the upper gear of the third double gear 205 are all provided with positioning marks 210 for positioning during gear installation. In this embodiment, the positioning marks 210 are strip-shaped imprints protruding from the outer surface of the gear. The upper surface of the upper gear of the third double gear 205 is symmetrically provided with two strip-shaped imprints along the central axis. During installation, the strip-shaped imprints of the first output gear 206 are aligned with the strip-shaped imprints on one side of the third double gear 205, and the strip-shaped imprints of the second output gear 207 are aligned with the strip-shaped imprints on the other side of the third double gear 205 for positioning installation to meet the angle requirements when the first valve core 106 and the second valve core 107 rotate together.

[0047] It will be apparent to those skilled in the art that various modifications and variations can be made to the exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention cover modifications and variations falling within the scope of the appended claims and their equivalents.

Claims

1. A control valve characterized by, include: A valve body assembly, comprising a first valve housing, a second valve housing, a valve cover, a first valve core, and a second valve core, wherein the first valve housing is disposed below the valve cover and forms a first mounting cavity with the valve cover, the second valve housing is disposed below the first valve housing and forms a second mounting cavity with the first valve housing, and the first valve core and the second valve core are disposed within the second mounting cavity; An actuator assembly is disposed within a first mounting cavity. The actuator assembly includes a circuit board, a motor connected to the circuit board, and a transmission gear set connected to the motor, a first valve core, and a second valve core. The circuit board controls the rotation of the motor, which in turn drives the transmission gear set to rotate, which in turn drives the first valve core and the second valve core to rotate.

2. The control valve of claim 1, wherein The transmission gear set includes a worm, a first double gear, a second double gear, a third double gear, a first output gear, and a second output gear. The worm is mounted on the output shaft of the motor and meshes with the lower gear of the first double gear. The upper gear of the first double gear meshes with the upper gear of the second double gear, and the lower gear of the second double gear meshes with the lower gear of the third double gear. The upper gear of the third double gear meshes with both the first and second output gears. The first output gear drives the first valve core to rotate, and the second output gear drives the second valve core to rotate. The first valve core and the first output gear are connected by a splined shaft.

3. The control valve of claim 2, wherein The splined shaft is coaxially arranged with the first output gear, and the splined shaft includes an external spline portion that mates with the first valve core and a protrusion portion that mates with the first output gear.

4. The control valve of claim 3, wherein The first output gear includes a limiting part that cooperates with the protrusion. During the rotation of the first output gear, the limiting part contacts the protrusion and drives the spline shaft to rotate, thereby driving the first valve core to rotate through the spline shaft.

5. The control valve of claim 4, wherein The first output gear includes a first gear disk portion and a first sleeve portion coaxially arranged with the first gear disk portion and extending axially along the first gear disk portion. The limiting portion is disposed inside the first sleeve portion. The radial cross-section of the limiting portion is fan-shaped. The limiting portion is coaxially arranged with the first gear disk portion. The periphery of the limiting portion inside the sleeve is a movable space for the protrusion to rotate.

6. The control valve of claim 5, wherein The radial cross-section of the protrusion is fan-shaped, and the protrusion is disposed within the active space.

7. The control valve of claim 6, wherein The spline shaft also includes a connecting rod portion that passes through the first gear plate portion. The connecting rod portion is connected to a potential element on the circuit board and can drive the potential element to rotate, thereby detecting the rotation angle of the first valve core.

8. The control valve of claim 2 wherein, The second valve core includes a splined valve shaft located at the top, and the second output gear includes a second gear disk portion and a second sleeve portion coaxially arranged with the second gear disk portion and extending axially along the second gear disk portion. The inner wall of the second sleeve portion is provided with an internal spline that mates with the splined valve shaft.

9. The control valve of claim 6, wherein The upper surfaces of the first output gear, the second output gear, and the upper gear of the third double gear are all provided with positioning marks for positioning during gear installation.

10. The control valve of claim 2 wherein, The circuit board is located above the first output gear and the second output gear.

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