Motor assembly and three-way valve having the same

Abstract

A motor assembly comprises a motor seat, a motor housing, a support plate, a sealing gasket and a motor; the motor seat comprises a step portion, the support plate abuts against the step portion; the support plate comprises a support plate limiting portion, the motor comprises a motor mounting plate, the motor mounting plate abuts against the support plate, and the support plate limiting portion can limit the rotation and radial movement of the motor; the motor seat comprises a motor seat sealing fitting portion, the motor seat sealing fitting portion abuts against the sealing gasket; the motor housing comprises a housing sealing fitting portion, the housing sealing fitting portion abuts against the sealing gasket; in the axial direction of the motor assembly, the sealing parts of the motor mounting plate and the sealing gasket do not have an overlapping area in the orthographic projection of the plane where the cross section of the motor assembly is located, the motor housing abuts against the motor, and the sealing effect is relatively good.

Description

[Technical field]

[0001] The present invention relates to the technical field of drive control, and in particular to a motor component. [Background technology]

[0002] Figure 1 A typical motor assembly structure is shown, which includes a motor base, a sealing gasket, a motor and a motor housing. The motor is provided with a motor mounting plate. When the motor assembly is installed, the sealing gasket is placed on the motor base, and then the motor and the motor housing are placed in sequence, and then the motor housing, the motor mounting plate, the sealing ring and the motor base are axially compressed.

[0003] In the motor assembly using the above structure, part of the motor mounting plate is located between the motor housing and the sealing gasket, and the sealing effect at the contact point between the motor mounting plate and the motor housing is relatively poor. [Summary of the invention]

[0004] The present invention provides a motor assembly, comprising a motor base, a motor housing, a support plate, a sealing gasket and a motor;

[0005] The motor seat comprises a step portion, and the support plate abuts against the step portion;

[0006] The support plate includes a support plate limiting portion, the motor includes a motor mounting plate, the motor mounting plate abuts against the support plate, and the support plate limiting portion can limit the rotation and radial movement of the motor;

[0007] The motor seat comprises a motor seat sealing matching portion, and the motor seat sealing matching portion abuts against the sealing gasket; the motor housing comprises a housing sealing matching portion, and the housing sealing matching portion abuts against the sealing gasket;

[0008] In the axial direction of the motor assembly, there is no overlapping area between the motor mounting plate and the sealing portion of the sealing gasket in the orthographic projection on the plane where the cross section of the motor assembly is located, and the motor housing abuts against the motor.

[0009] In the motor assembly provided by the present invention, the sealing gasket can be abutted against the sealing matching part of the motor base and the sealing matching part of the housing in its axial direction, and there is no overlapping area in the orthographic projection of the sealing part of the motor mounting plate and the sealing gasket on the plane where the cross section of the motor assembly is located, and the sealing effect is relatively good.

Brief Description of the Drawings

[0010] Figure 1 A partial cross-sectional view of a motor assembly in the background art;

[0011] Figure 2 A schematic diagram of the structure of a first embodiment of a motor assembly 1 provided by the present invention;

[0012] Figure 3 for Figure 2 An exploded diagram of the motor assembly;

[0013] Figure 4 for Figure 1 Top view of the CEC motor base;

[0014] Figure 5 It is a structural schematic diagram of a motor base provided with gears;

[0015] Figure 6 A top view of a motor base provided with gears;

[0016] Figure 7 It is the front view of the output gear;

[0017] Figure 8 is a schematic diagram of the structure of an inverted output gear;

[0018] Fig. 9 This is a schematic diagram of the structure of the motor assembly after removing the motor housing, motor and sealing gasket;

[0019] Fig.10 A schematic diagram of the structure of the motor provided in this embodiment;

[0020] Fig.11 This is a top view of the motor assembly after removing the motor housing;

[0021] Fig.12 A front view of the motor provided in this embodiment;

[0022] Fig.13 This is a schematic diagram of the structure before the sealing gasket and the motor seat are matched;

[0023] Fig.14 It is a schematic structural diagram of an inverted motor housing 12;

[0024] Fig.15 is a partial cross-sectional view of a motor assembly;

[0025] Fig.16 It is a structural schematic diagram of a three-way valve;

[0026] Fig.17 is a cross-sectional schematic diagram of the actuator;

[0027] Fig.18 It is a structural schematic diagram of the valve stem;

[0028] Fig.19 It is a structural schematic diagram of the valve core;

[0029] Fig. 20 It is a structural schematic diagram of a transmission part;

[0030] Fig.21is a schematic diagram of the structure of the transmission rod;

[0031] Fig. 22 It is a cross-sectional schematic diagram of the support plate and the output gear after being matched;

[0032] Fig.23 A partial cross-sectional view of a second embodiment of a motor assembly provided by the invention;

[0033] Fig.24 It is a schematic diagram of the structure of an inverted motor housing;

[0034] Fig.25 A schematic diagram of the structure of a support plate of another structure.

[0035] The above drawings include the following reference numerals:

[0036] 1. Motor assembly; 11. Motor seat; 111. Bottom of motor seat; 1111. Positioning hole of driven gear shaft; 1112. Positioning hole of transmission gear shaft; 112. Side of motor seat; 1121. Step portion; 1122. Seal fitting portion of motor seat; 11221. Seal fitting groove of motor seat; 113. Fitting hole portion of motor seat; 114. Through hole portion of motor seat; 12. Motor housing; 121. Top wall portion of housing; 1211. Top wall body portion; 1212. Top wall convex portion; 122. External Shell side; 123, pressing part; 124, shell sealing matching part; 125, motor shell through hole; 13, support plate; 13A, support plate limit part; 131, support plate body; 132, support plate convex part; 133, support plate through hole; 134, support plate matching hole; 135, support plate concave part; 14, sealing gasket; 141, sealing gasket through hole; 15, motor; 151, motor mounting plate; 1511, motor matching hole; 152, motor shaft; 153, Motor gear; 154, lead wire; 16, driven gear; 161, driven gear hole; 17, transmission gear; 171, transmission gear hole; 18, output gear; 181, output gear body; 182, output gear matching part; 183, output gear extension; 184, output gear matching hole; 2, actuator; 21, valve seat component; 211 valve seat matching hole; 212, inlet pipe; 2121, valve inlet; 213, first outlet pipe; 2131, first a valve outlet; 214, a second outlet pipe; 2141, a second valve outlet; 215, a valve seat accommodating portion; 216, a valve seat accommodating hole portion; 22, a valve stem; 221, a valve stem upper matching portion 221; 222, a valve stem lower matching portion; 223, an annular groove; 23, a valve core; 231, a limiting groove; 24, a transmission member; 241, a transmission member matching hole portion; 242, a transmission member gear portion; 25, a transmission rod; 251, a transmission rod gear portion; 252, a transmission rod matching portion; 26, a fixing plate; [Specific implementation method]

[0037] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] Please refer to Figures 2 to 8 ,in, Figure 2 A schematic diagram of the structure of a first embodiment of a motor assembly 1 provided by the present invention; Figure 3 for Figure 2 An exploded diagram of the motor assembly; Figure 4 This is a top view of the motor base; Figure 5 It is a structural schematic diagram of a motor base provided with gears; Figure 6 A top view of a motor base provided with gears;

[0039] Please refer to Figure 2-6 In a specific embodiment, the motor assembly 1 provided by the present invention includes a motor base 11, a motor housing 12, a support plate 13, a sealing gasket 14 and a motor 15.

[0040] The motor seat 11 is roughly a cylindrical structure with one end open, and is provided with a motor seat bottom 111. At the approximate edge position of the motor seat bottom 111, a motor seat side portion 112 is provided which is axially extended along the approximate edge position of the motor seat bottom 111. In this way, the motor seat 11 roughly forms a cylindrical structure with a hollow interior and an open upper end.

[0041] In addition, please refer to Figure 4-Figure 5 A gear transmission mechanism is also provided in the motor base 11. Specifically, in the present embodiment, a driven gear shaft positioning hole 1111 and a transmission gear shaft positioning hole 1112 are provided at the bottom 111 of the motor base. In addition, the driven gear shaft and the transmission gear shaft are respectively inserted into the driven gear positioning hole 1111 and the transmission gear positioning hole 1112 and cooperate with them. Specifically, part of the driven gear shaft is located in the driven gear positioning hole 1111, and part of the transmission gear shaft is located in the transmission gear positioning hole 1112.

[0042] It is worth noting that the driven gear shaft and the driven gear positioning hole 1111 can be a clearance fit, a transition fit or an interference fit. When the driven transmission gear shaft and the driven gear positioning hole 1111 are a clearance fit, the clearance between the driven gear shaft and the driven gear positioning hole 1111 should not be too large. The angle formed by the position of the maximum offset of the driven gear shaft and the axis of the driven gear positioning hole 1111 is more appropriately within 5 degrees, and the same is true for the transmission gear shaft and the transmission gear positioning hole 1112.

[0043] Of course, the driven gear positioning hole 1111 may not be provided, and the driven gear shaft may be directly integrally injection molded with the motor base 11, which can save the process of matching the driven gear shaft with the motor base 11; or the driven gear shaft may be welded to the bottom 111 of the motor base. The same is true for the transmission gear shaft and the transmission gear positioning hole 1112.

[0044] Please refer to Figure 5-6 The motor assembly 1 provided in this embodiment also includes a driven gear 16 and a transmission gear 17. The driven gear 16 is provided with a driven gear hole portion 161, and the driven gear hole portion 161 is approximately located at the center position of the driven gear 16. In this embodiment, the driven gear hole portion 161 is in the form of a through hole (of course, a blind hole can also be used). The driven gear shaft passes through the driven gear hole portion 161 to realize the positioning of the driven gear 16. The driven gear 16 can roughly use the axis of the driven gear shaft as its axis of rotation.

[0045] Of course, the driven gear 16 and the driven gear shaft may be integrally injection molded, in which case the driven gear 16 may not be provided with the driven gear hole 161. The transmission gear 17 is provided with a transmission gear hole 171, which is approximately located at the center of the transmission gear 17. In this embodiment, the transmission gear hole 171 is in the form of a through hole, and of course, a blind hole may be used. The transmission gear shaft passes through the transmission gear hole 171 to achieve the positioning of the transmission gear 17. The transmission gear 17 can roughly use the axis of the transmission gear shaft as its axis of rotation. Similarly, the transmission gear 17 may also be integrally injection molded with the transmission gear shaft, in which case the transmission gear 17 may not be provided with the transmission gear hole 171.

[0046] The driven gear 16 meshes with the transmission gear 17. When the driven gear 16 rotates, the transmission gear 17 can be driven to rotate synchronously through the meshing action of the gears.

[0047] The driven gear 16 meshing with the transmission gear 17 described in this specification means that: when the number of the transmission gear 17 is 1, the driven gear 16 meshes with the transmission gear 17, and the driven gear 16 drives the transmission gear 17 to rotate; when the number of the transmission gears 17 is 2 or more, the driven gear 16 meshes with one of the transmission gears 17, and the driven gear 16 drives the transmission gear 17 directly meshed with it to rotate, and the driven gear 16 indirectly drives the transmission gear 17 not meshed with it to rotate. In this embodiment, the number of the driven gear 16 is 1, and the number of the transmission gears 17 is 2.

[0048] Please refer to 7-8 for details. Figure 7 This is the main view of the output gear. Figure 8It is a structural schematic diagram of an inverted output gear; the motor assembly 1 provided in this embodiment also includes an output gear 18, which is engaged with the transmission gear 17. When the transmission gear 17 rotates, the output gear 18 can rotate driven by the transmission gear 17.

[0049] The output gear 18 meshing with the transmission gear 17 described in this specification means that: when the number of the transmission gear 17 is 1, the output gear 18 meshes with the transmission gear 17, and the transmission gear 17 drives the output gear 18 to rotate; when the number of the transmission gears 17 is 2 or more, the output gear 18 meshes with one of the transmission gears 17, and the transmission gear 17 meshing with the output gear 18 directly drives the output gear 18 to rotate synchronously, and the transmission gear 17 not meshing with the output gear 18 indirectly drives the output gear 18 to rotate. In this embodiment, the number of the output gear 18 is 1, and the number of the transmission gears 17 is 2.

[0050] The output gear 18 provided in this embodiment further includes an output gear body 181 and an output gear matching portion 182. The output gear matching portion 182 is substantially a structure extending downward along the axial direction of the output gear body 181. Figure 4 The motor base 11 is provided with a motor base matching hole portion 113 at a corresponding position of the output gear matching portion 182 . The motor base matching hole portion 113 is a through hole structure, and at least a portion of the output gear matching portion 182 is located in the motor base matching hole portion 113 .

[0051] The output gear 18 is also provided with an output gear mating hole portion 184, which is a hole-shaped structure arranged approximately in the middle position of the output gear 18, and the inner contour of the cross section of the output gear mating hole portion 184 is not circular, so as to facilitate the subsequent output gear 18 to drive the actuator to work (mentioned below).

[0052] The output gear 18 further includes an output gear extension portion 183 . The output gear extension portion 183 is substantially a structure extending upward along the axial direction of the output gear body portion 181 . The output gear extension portion 183 protrudes above the output gear body portion 181 .

[0053] Please refer to Fig. 9 , Fig. 9 The figure is a schematic diagram of the structure of the motor assembly 1 after removing the motor housing 12, the motor 15 and the sealing gasket 14; a step portion 1121 is provided on the motor seat side portion 112, and the step portion 1121 is roughly formed in the step structure of the inner wall surface and the upper end surface of the motor seat side portion 112. The step portion 1121 can be formed at the entire circumferential position of the motor seat side portion 112, and can also be formed at a partial circumferential position of the motor seat side portion 112. In the present embodiment, the step portion 1121 is formed at a partial circumferential position of the motor seat side portion 112.

[0054] The motor assembly 1 provided in this embodiment further includes a support plate 13, which is disposed at the upper end of the opening of the motor seat 11 and can abut against the step portion 1121 to define the positional relationship between the support plate 13 and the motor seat 11. Specifically, along the plane where the cross section of the motor assembly 1 is located, the orthographic projections of the step portion 1121 and the support plate 13 along the plane where the cross section of the motor assembly 1 is located have an overlapping area, and the projections of the step portion 1121 and the support plate 13 along the axis of the motor assembly 1 have an overlapping area, so that the support plate 13 is placed on the step portion 121 and supported by the step portion 121.

[0055] Please refer to Fig. 22 , Fig. 22 It is a cross-sectional schematic diagram after the support plate 13 and the output gear 184 are matched. The support plate 13 includes a support plate matching hole portion 134. In this embodiment, the support plate matching hole portion 134 is a blind hole structure, and the output gear extension portion 183 is inserted into the support plate matching hole portion 134, so that at least part of the output gear extension portion 183 is located in the support plate matching hole portion 134, and the outer contour of the output gear extension portion 183 is roughly circular, and the inner contour of the support plate matching hole portion 134 is roughly circular. When the output gear 18 rotates, the support plate matching hole portion 134 can provide guidance for the rotation of the output gear 18, thereby reducing the degree of axial displacement of the output gear 18 relative to the support plate matching hole portion 134.

[0056] Please continue to refer to Fig. 9 The support plate 13 provided in this embodiment includes a support plate limiting portion 13A, which can limit the rotation and radial movement of the motor 15. Specifically, the support plate body 131 and the support plate protrusion 132, the support plate protrusion 132 is roughly a columnar structure, the support plate protrusion 132 protrudes from the upper surface of the support plate body 131, the support plate protrusion 132 and the support plate body 131 can be integrally injection molded, or can be separately processed and then fixedly connected. For example, the support plate body 131 is provided with a groove structure, the support plate protrusion 132 is inserted into the groove structure, the support plate protrusion 132 and the groove structure are fixedly connected by interference fit or welding, and the support plate protrusion 132 protrudes from the support plate body 131. At this time, the support plate limiting portion 13A is the support plate protrusion 132.

[0057] Please refer to Fig.25 , Fig.25Schematic diagram of the structure of another support plate. The support plate limit portion 13A can also adopt other forms to limit the rotation and radial movement of the motor 15. Specifically, the support plate 13 is provided with a support plate recess 135 formed by being recessed along its upper surface in a direction away from the motor 15. Correspondingly, the support plate 13 also has a structure protruding from the support portion recess 135. The motor mounting plate 151 is mounted on the support plate recess 135, and the structure protruding from the support plate recess 135 is located on the outside of the motor mounting plate 151. At this time, the support plate recess 135 and the structure protruding from the support plate recess 135 can also limit the rotation and radial movement of the motor 15. At this time, the support plate limit portion 13A is the support plate recess 135.

[0058] Of course, the support plate protrusion 132 and the support plate recess 135 may also be provided at the same time, and the support plate protrusion 132 and the support plate recess 135 act on the motor 15 at the same time, which has a better effect of limiting the rotation and radial movement of the motor 15.

[0059] Please refer to Fig.10 , Fig.10 The schematic diagram of the structure of the motor provided in this embodiment; the motor 15 provided in this embodiment includes a motor mounting plate 151, which is roughly located at the lower part of the motor 15, and the motor mounting plate 151 includes a motor matching hole portion 1511, which can be in the form of a through hole or a blind hole. In this embodiment, the motor matching hole portion 1511 is in the form of a through hole. In addition, the motor 15 is also provided with a lead 154, which can be connected to an external power supply to provide the motor 15 with the power required for rotation.

[0060] Please refer to Figure 3 , Fig.11 , Fig.11 This is a top view of the motor assembly 1 after the motor housing 12 is removed. The motor 15 is placed on the support plate 13 so that the support plate 13 and the motor mounting plate 151 can be abutted against each other. The motor 15 is supported on the support plate 13, and the support plate protrusion 132 passes through the motor matching hole 1511, so that at least a portion of the support plate protrusion 132 is located in the motor matching hole 1511.

[0061] In this embodiment, the number of the support plate protrusions 132 is 3, and the number of the motor matching holes 1511 is also 3. The support plate protrusions 132 are penetrated through the motor matching holes 511 to prevent the motor 15 from radially displacing relative to the support plate 13 and the motor seat 11.

[0062] Of course, the number of the support plate protrusions 132 and the motor matching holes 1511 can also be set to 2 or more than 4, which can also achieve the purpose of preventing the radial displacement of the motor 15 relative to the support plate 13 and the motor seat 11.

[0063] It is worth noting that the present invention defines the support plate protrusion 132 as follows: the support plate protrusion 132 protrudes from the upper surface of the support plate body 131, and at least a portion of the support plate protrusion 132 is located in the motor matching hole 1511. When a component of the support plate 13 does not contain any of the two conditions, the component cannot be interpreted as the support plate protrusion 132 described in this specification;

[0064] By setting the support plate protrusion 132 and the motor matching hole portion 1511 of the motor mounting plate 151, the radial displacement of the motor 15 relative to the support plate 13 and the motor seat 11 and the rotation of the motor 15 itself can be prevented. Compared with the motor assembly 1 that does not radially position the motor 15, the motor assembly 1 that positions the motor 15 is more stable during operation, and the noise generated by the displacement of the motor 15 is relatively small.

[0065] Please refer to Figure 5 , Fig.12 , Fig.12 This is the front view of the motor 15 provided in the present embodiment. The motor 15 provided in the present embodiment also includes a motor shaft 152 and a motor gear 153. The motor shaft 152 and the motor gear 153 can be fixedly connected or integrally formed. In the present embodiment, the motor shaft 152 and the motor gear 153 are fixedly connected by interference fitting. The support plate 13 is provided with a support plate through hole portion 133 at a corresponding position of the motor gear 153. The support plate through hole portion 133 is a through hole that passes through the upper and lower surfaces of the support plate 13. At least part (all or part) of the motor gear 153 passes through the support plate through hole portion 133, so that the motor gear 153 extends to the bottom of the support plate through hole portion 133 and meshes with the driven gear 16.

[0066] Through the above arrangement, when the motor 15 is powered on and the motor shaft 152 rotates, the motor gear 153 can rotate synchronously, thereby driving the driven gear 16 to rotate, the driven gear 16 drives the transmission gear 17 to rotate, and the transmission gear 17 can drive the output gear 18 to rotate.

[0067] Please refer to Fig.13 , Fig.13It is a structural schematic diagram before the sealing gasket 14 is matched with the motor base 11; the upper end surface of the motor base side portion 112 provided in this embodiment is also provided with a motor base sealing matching portion 1122, and the motor base sealing matching portion 1122 is roughly located at the upper part of the motor base side portion 112 (not limited to the uppermost end of the motor base side portion 112) and is horizontally arranged. The sealing gasket 14 is placed above it. The sealing gasket 14 can be made of soft plastics such as polyethylene, polypropylene, polystyrene, etc., and can be used to seal the motor assembly 1.

[0068] In addition, the motor seat sealing fitting portion 1122 also includes a motor seat sealing fitting groove 11221, which is roughly a structure formed by a surface depression along the motor seat side portion 112. When the sealing gasket 14 is subjected to pressure, part of the sealing gasket 14 will be deformed and enter the motor seat sealing fitting groove 11221, thereby increasing the contact area between the sealing gasket 14 and the motor seat sealing fitting portion 1122, thereby increasing the sealing effect of the motor assembly 1.

[0069] Please refer to Figure 3 , Fig.14 , Fig.14 It is a schematic diagram of the structure of an inverted motor housing 12; the motor housing 12 is also roughly a cylindrical structure with one end open, and is provided with a housing top wall portion 121, which is roughly the portion where the top of the motor housing 12 is located, and at the approximate circumferential edge position of the housing top wall portion 121, a housing side portion 122 is provided which is formed by axially extending along the approximate circumferential edge position of the housing top wall portion 121, so that the motor housing 12 roughly forms a cylindrical structure with a hollow interior and an open upper end.

[0070] The motor housing 12 is also provided with a structure radially extending along a part of the circumferential position of the housing side portion 122 , which is arranged roughly parallel to the housing top wall portion 121 . The motor housing 12 is also provided with a pressing portion 123 , which abuts against the motor mounting plate 151 .

[0071] The motor housing 12 can be snapped onto the motor base 11. The motor housing 12 is fixedly connected to the motor base 11. An opening is still left after the motor housing 12 and the motor base 11 are snapped together. The lead 154 of the motor 15 can be led out to the outside of the motor housing 12 through the opening for connecting to a power source.

[0072] In addition, the motor housing 12 also includes a housing seal fitting portion 124. When the motor housing 12 is fixedly connected to the motor base 11, the housing seal fitting portion 124 can abut against the sealing gasket 14. The housing seal fitting portion 124 also includes a housing seal fitting groove 1241. The housing seal fitting groove 1241 is recessed in the housing seal fitting portion 124 (except the housing seal fitting portion 124). When the sealing gasket 14 is subjected to pressure, part of the sealing gasket 14 will be deformed and enter the housing seal fitting groove 1241, thereby increasing the contact area between the sealing gasket 14 and the housing seal fitting portion 124, thereby increasing the sealing effect of the motor assembly 1.

[0073] Please refer to Fig.11 , Fig.15 , Fig.15 It is a partial cross-sectional view of the motor assembly. Through the above arrangement, the sealing gasket 14 can abut against the motor seat sealing mating part 1122 and the housing sealing mating part 124 at the same time in its axial direction. And in the axial direction of the motor assembly 1, there is no overlapping area in the orthographic projection of the sealing part of the motor mounting plate 151 and the sealing gasket 14 on the plane where the cross section of the motor assembly 1 is located, that is, the motor mounting plate 151 is not located between the sealing gasket 14 and the motor seat sealing mating part 1122 or the sealing gasket 14 and the housing sealing mating part 124, avoiding the situation that the materials of the motor mounting plate 151 and the motor seat sealing mating part 1122 or the support plate 151 and the housing sealing mating part 124 are harder than the sealing gasket 14, and the two directly abut against each other, resulting in an unsatisfactory sealing effect, thereby increasing the sealing effect of the motor assembly 1.

[0074] It is worth noting that the sealing part of the sealing gasket 14 refers to the part of the sealing gasket 14 corresponding to the common orthographic projection area when the sealing gasket 14, the motor seat sealing fitting part 1122 and the shell sealing fitting part 124 have a common orthographic projection area on the plane where the cross-section of the motor assembly 1 is located.

[0075] Please continue to refer to Fig.15 Furthermore, in order to reduce the shaking of the motor 15 inside the motor assembly 1, the motor assembly 1 provided in this embodiment has a pressing portion 123 that abuts against the motor mounting plate 151. At this time, the motor 15 is supported on the support plate 13, and its radial direction is limited by the influence of the support plate protrusion 132, and its axial direction is limited by the action of the pressing portion 123. The motor 15 is better limited in the motor assembly 1 and is not easy to have relative movement and collision with other components in the motor assembly 1 to generate noise.

[0076] The following is a description in combination with the motor assembly 1 and the actuator 2 .

[0077] In this embodiment, a three-way valve composed of a motor assembly 1 and an actuator 2 is taken as an example for explanation.

[0078] Please refer to Figure 16-17 , Fig.16 It is a structural diagram of a three-way valve. Fig.17 It is a cross-sectional schematic diagram of the actuator 2; the three-way valve includes a valve seat component 21, the valve seat component 21 includes a valve seat body portion 211, an inlet pipe portion 212, a first outlet pipe portion 213 and a second outlet pipe portion 214, in addition, the valve seat component 21 is also provided with a valve seat matching hole portion 2111, a valve inlet port 2121, a first valve outlet port 2131 and a second valve outlet port 2141.

[0079] The actuator 2 of this embodiment also includes a fixing plate 26, which is fixed to the upper end of the valve seat component 21. Specifically, the fixing plate 26 is provided with a through hole and is arranged at a substantially upper end position of the valve seat component 21. A threaded hole is provided at a relative position of the through hole of the fixing plate 26. Bolts are threadedly engaged with the threaded hole to fix the valve seat component 21 to the fixing plate 26.

[0080] In the background technology, the motor housing, motor mounting plate, sealing ring and motor seat are axially compressed by bolts, and part of the motor mounting plate is located between the motor housing and the sealing gasket, resulting in relatively poor sealing performance of the motor assembly, and water vapor easily enters the motor assembly. In addition, since the motor mounting plate and the bolts are both made of metal structures, after the motor mounting plate and the bolts of this mounting structure come into contact, the current of the motor is more likely to flow from the motor mounting plate through the bolts to the outside of the motor assembly 1, resulting in poor electrical insulation performance of the motor assembly. In the motor assembly 1 of the present application, the bolts do not directly contact the motor mounting plate 151, and the electrical insulation performance of the motor assembly 1 is also relatively good.

[0081] In addition, in the present embodiment, the motor housing 12 is provided with a motor housing through hole portion 125, the sealing gasket 14 is provided with a sealing gasket through hole portion 141, the motor seat is provided with a motor seat through hole portion 114, and a threaded hole is provided in the fixing plate 26, the threaded hole is substantially concentric with the motor housing through hole portion 125, the sealing gasket through hole portion 141, and the motor seat through hole portion 114, and the bolts are respectively penetrated into the motor housing through hole portion 125, the sealing gasket through hole portion 141, and the motor seat through hole portion 114 from top to bottom, and are threadedly tightened with the threaded holes of the fixing plate 26. At this time, the sealing gasket 14 is respectively pressed against the motor seat sealing matching portion 1122 and the housing sealing matching portion 124 to achieve the sealing effect of the motor assembly 1.

[0082] The above method not only realizes the connection between the motor base 11 and the motor housing 12, but also realizes the connection between the motor assembly 1 and the actuator 2, and the connection method is convenient and reliable.

[0083] Of course, the motor base 11 and the motor housing 12 are not limited to the above connection method. The motor base 11 and the motor housing 12 can also be connected by other methods such as welding, riveting, and snap connection.

[0084] There are a variety of connection options available for the first outlet pipe portion 213 and the valve seat body portion 211. For example, the first outlet pipe portion 213 and the valve seat body portion 211 may be integrally injection molded, or the first outlet pipe portion 213 and the valve seat body portion 211 may be separately processed and then fixedly connected. Specific connection methods include welding, bolting, and threaded fixing.

[0085] There are a variety of connection options available for the second outlet pipe portion 214 and the valve seat body portion 211. For example, the second outlet pipe portion 214 and the valve seat body portion 211 may be integrally injection molded, or the second outlet pipe portion 214 and the valve seat body portion 211 may be separately processed and then fixedly connected. Specific connection methods include welding, bolting, and threaded fixing.

[0086] It is worth noting that when the first outlet pipe portion 214 and the valve seat body portion 211 are integrally injection-molded, the first outlet pipe portion and the valve seat body portion 211 do not necessarily need to be strictly distinguished.

[0087] Due to the need for subsequent assembly of the valve core 23, the connection between the first outlet pipe portion 213, the second outlet pipe portion 214 and the valve seat body portion 211 can usually be achieved by adopting a method in which one of the first outlet pipe portion 213 and the second outlet pipe portion 214 is fixedly connected to the valve seat body portion 211 and the other is integrally injection molded with the valve seat body portion 211, or a method in which both the first outlet pipe portion 213 and the second outlet pipe portion 214 are fixedly connected to the valve seat body portion 211.

[0088] Of course, the present invention does not exclude the method that the first outlet pipe part 213 and the second outlet pipe part 214 are integrally formed with the valve seat body part 211. This solution can be realized in a specific valve seat body part 211 structure. For example, the valve seat body part 211 is in a split form, the first outlet pipe part 213 and a part of the valve seat body part 211 are integrally injection molded, and the second outlet pipe part 214 and another part of the valve seat body part 211 are integrally injection molded. After the valve core 13 is assembled, the two parts of the valve seat body part 211 are fixedly connected by welding, bolt connection, etc. Therefore, the present invention does not limit the valve seat body part 211 to a complete integrated structure.

[0089] The inlet pipe portion 212 and the valve seat body portion 211 may be connected in a fixed connection or in an integrally formed manner.

[0090] Please continue to refer to Fig.17In this embodiment, the inlet valve port 2121 is arranged on the inlet pipe portion 212, the first valve outlet port 2131 is arranged on the first outlet pipe portion 213, the second valve outlet port 2141 is arranged on the second outlet pipe portion 214, and the valve seat matching hole portion 211 is arranged on the valve seat body portion 211. Of course, it can be understood that the first valve outlet port 2131 does not have to be arranged on the first outlet pipe portion 213, and the first valve outlet port 2131 can also be directly arranged on the valve seat body portion 211. Similarly, the second valve outlet port 2141 does not have to be arranged on the second outlet pipe portion 214, and the second valve outlet port 2141 can also be directly arranged on the valve seat body portion 211. The inlet valve port 2121, the first valve outlet port 2131 and the second valve outlet port 2141 can also be formed in other parts at one or all of them.

[0091] Please refer to Fig.18 , Fig.18 It is a structural schematic diagram of the valve stem. The three-way valve provided in this embodiment also includes a valve stem 22. The valve stem 22 is inserted into the valve seat matching hole 2111. A part of the valve stem 22 passes through the valve seat matching hole 2111, and the valve stem 22 includes a valve stem upper matching portion 221. The valve stem upper matching portion 221 is roughly located at the upper part of the valve stem 22, and the outer contour of the cross-section of the valve stem upper matching portion 221 is not circular.

[0092] Please refer to Fig.19 , Fig.19 This is a structural schematic diagram of the valve core. The three-way valve provided in this embodiment also includes a valve core 23. The valve core 23 is located in the valve seat component 21. The valve core 23 is roughly spherical and is provided with three circular openings. The three circular openings are respectively recessed a certain distance along the surface of the valve core 23, so that the three circular openings are interconnected.

[0093] In addition, a limiting groove 231 is further provided on the top of the valve core 23 . The limiting groove 231 is substantially a structure formed by being recessed along the surface of the valve core 23 , and the limiting groove 231 is not a circular groove.

[0094] Correspondingly, the valve stem 22 includes a valve stem lower fitting portion 222 , which is located at the lower portion of the valve stem 22 , and the outer contour of the cross section of the valve stem lower fitting portion 222 is not circular either.

[0095] The lower matching portion 222 of the valve stem can be inserted into the limiting groove 231, so that at least a part of the lower matching portion 222 of the valve stem is located in the limiting groove 231. When the valve stem 22 rotates, the valve core 23 also rotates with the drive of the valve stem 22. When the valve core 23 rotates, one of the first valve outlet 2131 and the second valve outlet 2141 can be opened, and the fluid medium can flow in from the valve inlet 2121 and flow out from one of the first valve outlet 2131 and the second valve outlet 2141.

[0096] In addition, in order to reduce the phenomenon of fluid medium flowing out of the actuator 2 through the gap between the valve stem 22 and the valve seat matching hole portion 2111, the valve stem 22 provided in this embodiment is also provided with an annular groove 2, and a sealing ring is provided in the annular groove 223. In this embodiment, the number of the annular groove 223 and the sealing ring are both 2. The sealing ring is arranged in the annular groove 22, which can seal the valve stem 22 and the valve seat matching hole portion 2111, thereby reducing the phenomenon of fluid medium flowing out of the gap between the valve stem 22 and the valve seat matching hole portion 2111 to the actuator 2.

[0097] Please refer to Fig. 20 , Fig. 20 It is a structural schematic diagram of the transmission member; the three-way valve provided in this embodiment also includes a transmission member 24, the valve seat member 21 includes a valve seat accommodating portion 215, the valve seat accommodating portion 215 is roughly located at the upper part of the valve seat member 21 and has a groove structure, the transmission member 24 is located in the valve seat accommodating portion 215, the transmission member 24 includes a transmission member matching hole portion 241 and a transmission member gear portion 242, and the transmission member gear portion 242 is roughly located at a partial circumferential position of the transmission member 24, that is, the transmission member gear portion 242 is not circumferential.

[0098] The transmission member mating hole portion 241 is not a circular structure. The mating portion 221 on the valve stem is inserted into the transmission member mating hole portion 241, so that at least part of the mating portion 221 on the valve stem is located in the transmission member mating hole portion 241, and when the transmission member 24 rotates, the valve stem 22 can also rotate driven by the transmission member 24.

[0099] Please refer to Fig.21 , Fig.21 Schematic diagram of the structure of the transmission rod; the actuator 2 provided in this embodiment also includes a transmission rod 25, which is provided with a transmission rod gear portion 251, and the transmission rod gear portion 251 is meshed with the transmission member gear portion 242. When the transmission rod gear portion 251 rotates, the transmission member 24 is driven by the transmission rod 25 to rotate. It is worth noting that, as two conventional replacement means, the transmission rod gear portion 251 and the rest of the transmission rod 25 can be integrally formed, or the transmission rod gear portion 251 and the rest of the transmission rod 25 (except the transmission rod gear portion 251) can be fixedly connected. The present invention does not specifically limit whether the transmission rod gear portion 251 and the rest of the transmission rod 25 (except the transmission rod gear portion 251) are integrally formed or fixedly connected.

[0100] The transmission rod 25 also includes a transmission rod matching portion 252, which is roughly located at the upper part of the transmission rod 25. The cross-sectional profile of the transmission rod matching portion 252 is not circular. In addition, the transmission rod matching portion 252 can be inserted into the output gear matching hole portion 184, so that at least part of the transmission rod matching portion 252 is located in the output gear matching hole portion 184. When the output gear 18 rotates, the transmission rod 25 can rotate driven by the output gear 18.

[0101] In addition, in order to ensure that the axis of rotation of the transmission rod 25 is coaxial with the central axis of the output gear 18 when the transmission rod 25 rotates, the valve seat component 21 provided in this embodiment further includes a valve seat accommodating hole 216. The lower end of the transmission rod 25 is inserted into the valve seat accommodating hole 216. When the transmission rod 25 rotates, the valve seat accommodating hole 216 provides a guide for the rotation of the transmission rod 25, which can reduce the deviation of the axis of rotation of the rotation rod 25 and the axis of rotation of the output gear 18.

[0102] Please refer to Figure 23-24 , Fig.23 A partial cross-sectional view of a second embodiment of a motor assembly provided by the invention; Fig.24 It is a schematic diagram of the structure of an inverted motor housing;

[0103] It should be pointed out that the main purpose of the present invention is to improve the positioning method of the motor 15 of the motor assembly, and general technologies can be used for other components of the motor assembly 1.

[0104] To facilitate the description of this embodiment, the same figure marks are used for components in this embodiment that have the same structure and the same function as those in the first embodiment, and the description of the components in the first embodiment is also applicable to the second embodiment. The differences from the first embodiment are described in detail below.

[0105] In this embodiment, the motor housing 12 also includes a housing top wall portion 121, which is roughly located at the top of the motor housing 12. The housing top wall portion 121 includes a top wall body portion 1211 and a top wall protrusion 1212. The top wall body portion 1211 is roughly a plate-like structure, and the top wall protrusion 1212 protrudes toward the lower surface of the top wall body portion 1211, and the top wall protrusion 1212 is against the motor 15.

[0106] The motor assembly 1 provided in the embodiment has a top wall protrusion 1212 that abuts against the motor mounting plate 151. At this time, the motor 15 is supported on the support plate 13, and its radial direction is limited by the support plate protrusion 132, and its axial direction is limited by the top wall protrusion 1212. The motor 15 is better limited in the motor assembly 1 and is not easy to have relative movement or collision with other components in the motor assembly 1 to generate noise.

[0107] It should be noted that the directional nouns such as up, down, left, and right mentioned in this embodiment are all based on the drawings in the specification and are introduced for the convenience of description; and the ordinal numbers such as "first" and "second" in the names of the components are also introduced for the convenience of description and do not mean any limitation on any order of the components.

[0108] The three-way valve provided by the present invention is introduced in detail above. The principle and implementation mode of the present invention are described in this article by using specific examples. The description of the above embodiments is only used to help understand the core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, the present invention can also be improved and modified without departing from the principle of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A motor assembly, characterized in that: It comprises a motor base (11), a motor housing (12), a support plate (13), a sealing gasket (14) and a motor (15); The motor seat (11) comprises a step portion (1121), and the support plate (13) abuts against the step portion (1121); The support plate (13) comprises a support plate limiting portion (13A), the motor (15) comprises a motor mounting plate (151), the motor mounting plate (151) abuts against the support plate (13), the support plate limiting portion (13A) comprises a support plate convex portion (132), the motor mounting plate (151) comprises a motor matching hole portion (1511), the support plate convex portion (132) is at least partially located in the matching hole portion (1511), and / or the support plate limiting portion (13A) comprises a support plate recessed portion (135), at least a portion of the motor mounting plate (151) is located in the support plate recessed portion (135), and the support plate limiting portion (13A) can limit the rotation and radial movement of the motor (15); The motor seat (11) comprises a motor seat sealing matching portion (1122), and the motor seat sealing matching portion (1122) abuts against the sealing gasket (14); the motor housing (12) comprises a housing sealing matching portion (124), and the housing sealing matching portion (124) abuts against the sealing gasket (14); In the axial direction of the motor assembly (1), there is no overlapping area between the sealing portion of the motor mounting plate (151) and the sealing gasket (14) in the orthographic projection of the plane where the cross section of the motor assembly (1) is located, and the motor housing (12) is against the motor (15).

2. The motor assembly according to claim 1, characterized in that: The motor housing (12) comprises a housing top wall portion (121) and a pressing portion (123), wherein the pressing portion (123) is closer to the support plate (13) than the housing top wall portion (121), and the pressing portion (123) abuts against the motor mounting plate (151).

3. The motor assembly according to claim 1, characterized in that: The motor housing (12) comprises a housing top wall portion (121), wherein the housing top wall portion (121) comprises a top wall body portion (1211) and a top wall protrusion portion (1212), wherein the top wall protrusion portion (1212) protrudes from the lower surface of the top wall body portion (1211), and the top wall protrusion portion (1212) abuts against the motor (15).

4. The motor assembly according to claim 1, characterized in that: The support plate (13) comprises a support plate body portion (131) and the support plate convex portion (132), wherein the support plate convex portion (132) protrudes from the upper surface of the support plate body portion (131).

5. The motor assembly according to claim 1, characterized in that: The support plate recessed portion (135) is capable of limiting the rotation and radial movement of the motor (15), and the support plate limiting portion (13A) includes the support plate recessed portion (135); 6. The motor assembly according to any one of claims 1 to 5, characterized in that: The motor seat sealing matching portion (1122) comprises a motor seat sealing matching groove (11221), and at least a portion of the sealing gasket (14) is located in the motor seat sealing matching groove (11221); And / or, the housing seal fitting portion (124) comprises a housing seal fitting groove (1241), and at least a portion of the sealing gasket (14) is located in the housing seal fitting groove (1241).

7. The motor assembly according to claim 1, characterized in that The motor (15) comprises a motor shaft (152) and a motor gear (153), the motor shaft (152) and the motor gear (153) are fixedly connected or integrally formed, the support plate (13) comprises a support plate through hole portion (133), and at least a portion of the motor gear (153) passes through the support plate through hole portion (133); The motor assembly (1) further comprises a driven gear (16) and an output gear (18); the driven gear (16) is meshed with the motor gear (153); and the motor gear (153) can drive the output gear (18) to rotate.

8. The motor assembly according to claim 7, characterized in that The motor assembly (1) further comprises a transmission gear (17), the driven gear (16) meshes with the transmission gear (17), and the output gear (18) meshes with the transmission gear (17).

9. The motor assembly according to claim 7 or 8, characterized in that: The output gear (18) comprises an output gear body (181) and an output gear extension (183), wherein the output gear extension (183) protrudes from the upper surface of the output gear body (181), and the support plate (13) comprises a support plate matching hole (134), wherein the output gear extension (183) is at least partially located in the support plate matching hole (134); 10. The motor assembly according to any one of claims 7 to 9, characterized in that: The output gear (18) includes an output gear matching portion (182), the motor seat (11) includes a motor seat matching hole portion (113), at least a portion of the output gear matching portion (182) is located in the motor seat matching hole portion (113), and the output gear (18) further includes an output gear matching hole portion (184), and the inner contour of the cross section of the output gear matching hole portion (184) is not circular.

11. A three-way valve, characterized in that: The actuator (2) comprises a valve seat component (21), a valve stem (22) and a valve core (23), the valve core (23) being located in the valve seat component (21), the valve seat component (21) comprising a valve seat matching hole portion (211), the valve stem (22) being inserted into the valve seat matching hole portion (211), the valve stem (22) comprising a valve stem lower matching portion (222), the valve core (23) comprising a limiting groove (231), and at least a portion of the valve stem lower matching portion (222) being located in the limiting groove (231); It also comprises a motor assembly as claimed in any one of claims 1 to 5, 7 and 8, wherein the motor assembly (1) is connected to the actuator (2), and the motor assembly (1) can drive the valve core (23) to rotate.

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