A driving device and a water valve
By incorporating a spring restraint section, including support and positioning structures, in the lower housing, the problem of insufficient spring installation accuracy is solved, thereby improving the working stability and accuracy of the water valve.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHEJIANG SANHUA INTELLIGENT CONTROLS CO LTD
- Filing Date
- 2022-12-31
- Publication Date
- 2026-05-26
Smart Images
Figure CN118274169B_ABST
Abstract
Description
[Technical Field]
[0001] This application relates to the field of motor drive devices and valve technology, and particularly to a drive device and a water valve of the drive device. [Background Technology]
[0002] A water valve is a control component for fluid transport, primarily used to change the direction of medium flow. It includes a drive unit, a connecting seat, and a valve body. In one specific context, the drive unit comprises an upper housing, a motor, a driven cam, a driving cam, a spring, a swing arm assembly, and a lower housing. When the motor is energized, its output shaft generates rotational torque, driving the driving cam to rotate. The driving cam then pushes the spring to deform, changing the contact state of the spring's contacts. The spring is made of a relatively thin metal sheet; effectively fixing and positioning the spring to ensure its installation accuracy is a problem that those skilled in the art need to solve. [Summary of the Invention]
[0003] The purpose of this invention is to provide a driving device that improves the installation accuracy of spring clips. To this end, at least one embodiment of this invention adopts the following technical solution:
[0004] A driving device, characterized in that it includes a lower housing and a spring piece, the lower housing being provided with a spring piece constraint part, the spring piece constraint part being provided with a spring piece support part and a spring piece positioning part, the spring piece including a spring piece fixing part, the spring piece fixing part being fixedly connected to the spring piece positioning part, the spring piece support part being provided with at least a partial planar part, and the spring piece being able to abut against the spring piece support part.
[0005] An embodiment of the present invention also provides a water valve employing the above-described driving device.
[0006] The driving device provided in the above embodiment has a spring sheet constraint part with a spring sheet support part and a spring sheet positioning part. The spring sheet fixing part is fixedly connected to the spring sheet positioning part. The spring sheet support part has at least a partial flat part. The spring sheet can abut against the spring sheet support part. Compared with the prior art, it can achieve more accurate positioning and support of the spring sheet. [Attached Image Description]
[0007] Figure 1 A schematic diagram of a water valve structure in one working state according to an embodiment of this application;
[0008] Figure 2 A schematic diagram of another working state of a water valve structure provided in one embodiment of this application;
[0009] Figure 3 This is an exploded view of the structure of a drive device provided in one embodiment of this application;
[0010] Figure 4This is a partial cross-sectional view of a fixed plate and a first cam portion in a pressing state according to an embodiment of this application;
[0011] Figure 5 This is a schematic diagram of the structure of the first cam portion provided in one embodiment of this application;
[0012] Figure 6 This is a schematic diagram of the structure of the second cam portion provided in one embodiment of this application;
[0013] Figure 7 This is a schematic diagram of the first state of the first cam portion and the second cam portion cooperating according to an embodiment of this application;
[0014] Figure 8 A schematic diagram illustrating a second state of cooperation between a first cam portion and a second cam portion, provided in one embodiment of this application;
[0015] Figure 9 A partial view of a working state of a driving device provided in one embodiment of this application.
[0016] Figure 10 A partial view of another operating state of the driving device provided in one embodiment of this application;
[0017] Figure 11 This is a schematic diagram of the lower shell structure provided in one embodiment of this application;
[0018] Figure 12 This is a schematic diagram of the structure of a spring sheet provided in one embodiment of this application.
Detailed Implementation Methods
[0019] To enable those skilled in the art to better understand the technical solutions provided in this application, the technical solutions of this application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the core of the invention of the water valve provided in this application lies in the structure of the driving device. As for other components, such as the connecting seat, valve body, and the flow channel structure inside the valve body, they can be adapted to meet the needs of different system applications. It should be noted that this application only describes the working mechanism of the water valve using a specific embodiment of a water valve, and does not limit the above-mentioned driving device to be applied only to water valves of this structure.
[0020] Please refer to Figure 1 and Figure 2 The diagram shown is a schematic representation of a water valve structure in one working state according to an embodiment of this application. Figure 2This is a schematic diagram illustrating another working state of a water valve structure according to an embodiment of this application. The water valve has an inlet channel, a first outlet channel 200, and a second outlet channel 300. The water valve includes a valve body 10, a connecting seat 20, a driving device 30, a core assembly 40, a fixing seat 50, and a connecting plate 51. The connecting seat 20 is fixedly connected to the valve body 10. In this embodiment, the connecting seat 20 and the valve body 10 can be fixed by a threaded connection, and an upper sealing element 24 is provided between the connecting seat 20 and the valve body 10 to further improve the sealing connection effect. The connecting seat 20 also achieves a sealing fit with the valve body 10 through the lower seal 25 to prevent the medium from flowing out. The connecting seat 20 is provided with a connecting seat cavity 21, and a connecting hole 23 is opened on the side wall of the connecting seat 20. The connecting hole 23 penetrates the side wall of the connecting seat 20. The driving device 30 is located above the connecting seat 20. The driving device 30 includes a driving shaft 31, which can abut against the valve stem 42 of the core assembly 40 so that the core assembly can be displaced along the axial direction of the connecting seat 20.
[0021] The valve body 10 includes abutment portion 11, which can be integrally formed with the valve body 10 by machining or other means. The abutment portion 11 and the valve body 10 are an integral structure. In the embodiments provided in this application, the abutment portion 11 can be a conical stepped portion or other irregular structure, as long as it can abut against the valve core component 41 of the core assembly 40. The specific shape of the abutment portion is not specifically limited. The water valve has a receiving cavity 10A. The lower sealing portion 22, the abutment portion 11, and the inner peripheral wall of the valve body 10 located between the lower sealing portion 22 and the abutment portion 11 generally define the receiving cavity 10A. The core component 41 can move along the axis of the connecting seat 20 in the receiving cavity 10A. The core component 41 can abut against the lower sealing part 22 of the connecting seat 20 or against the abutment part 11. When the core component 41 moves axially upward and abuts against the lower sealing part 22 of the connecting seat, it forms the upper sealing mating structure of the water valve. At this time, the medium enters the self-accepting cavity 10A from the inlet channel and flows to the first outflow channel 200 through the opening where the abutment part 11 is located. When the sealing component 41 moves axially downward and abuts against the abutment part 11 of the valve body 10, it forms the lower sealing mating structure of the water valve. At this time, the medium enters the self-accepting cavity 10A from the inlet channel and flows to the second outflow channel 300 through the opening where the lower sealing part 22 is located.
[0022] The water valve also includes a first flow passage S1 and a second flow passage S2. The receiving cavity 10A can communicate with the first outlet channel 200 through the first flow passage S1, and the receiving cavity 10A can communicate with the second outlet channel 300 through the second flow passage S2. The fixed seat 50 is fixedly connected to the valve body 10 and sealed. The connecting plate 51 is fixedly connected to the fixed seat 50. The connecting plate 51 is provided with several flow holes to conduct the first flow passage S1 and the first outlet channel 200. The inner peripheral wall of the valve body 10 located between the abutment part 11 and the connecting plate 51 roughly forms the first flow passage. The inner peripheral wall of the fixed seat 50 of the cavity wall of the channel S1 generally forms the cavity wall of the first outflow channel 200. When the valve core component 41 abuts against the lower sealing part 22 of the connecting seat, the receiving cavity 10A, the first flow channel S1 and the first outflow channel 200 are connected. The inner peripheral wall of another part of the valve body located between the connecting seat 20 and the inlet of the second outflow channel 300 generally forms the cavity wall of the second flow channel S2. When the valve core component 41 abuts against the abutting part 11, the receiving cavity 10A, the connecting seat cavity 21, the second flow channel S2 and the second outflow channel 300 are connected.
[0023] Under the excitation of the drive device 30, the drive shaft 31 presses against the valve stem 42 and moves axially downward, causing the valve core component 41 to move axially downward until it abuts against the abutment part 11; when the drive shaft 31 is axially lifted upward, the valve core component 41 is lifted upward as a whole until the valve core component abuts against the lower sealing part 22 of the connecting seat. In order to achieve a better sealing fit, the lower sealing part 22 may have a conical structure, and the abutment part may have a conical structure.
[0024] The drive device 30 will now be described in detail with reference to the accompanying drawings.
[0025] Please refer to Figure 3 , Figure 3 This is an exploded view of the drive device structure provided in one embodiment. The drive device 30 includes an upper housing 301 and a lower housing 302, which, after being fitted and fixed, generally form a cavity. To further ensure a tight fit between the upper housing 301 and the lower housing 302, a plurality of first fastening portions 3013 can be provided on the outer edge of the upper housing, and a corresponding number of second fastening portions 3023 can be provided on the outer edge of the lower housing. Specifically, the first fastening portions 3012 are provided with fastening holes 30131, and the second fastening portions 3023 are provided with fastening steps 30231. During assembly, along... Figure 3In the axial direction shown, the first housing 301 is moved downwards, causing the first fastening part 3013 to move toward the second fastening part 3023. During the movement, the first fastening part 3013 is abutted by the inclined surface of the fastening step part 30231, resulting in a certain radial deformation. When the fastening is in place, the fastening step part 30231 will engage with the fastening hole part 30131, achieving a limiting connection and thus achieving the fastening and fixing of the two. Of course, those skilled in the art, based on the above teachings, can also place the first fastening part on the lower housing and the second fastening part on the upper housing to achieve the same technical effect. The driving device also includes a terminal part 3021, from which the insert described below extends. In this embodiment, the terminal part 3021 is formed by fastening the first protrusion 3011 integrally formed on the upper housing and the second protrusion 3021 integrally formed on the lower housing.
[0026] Within the space enclosed by the upper housing 301 and the lower housing 302, a motor 303, a fixing plate 306, a first cam portion 304, and a second cam portion 305 are provided. The motor 303 drives the first cam portion 304 to rotate, and the cam mechanism between the first cam portion 304 and the second cam portion 305 allows the second cam portion 305 to be displaced axially. The second cam portion 305 is provided with a limiting hole portion 3051 and a limiting step portion 3052, wherein the limiting step portion 3052 can be integrally injection molded with the second cam portion 305. The lower housing 302 is provided with a limiting groove portion 3022 and a first limiting post portion 3024, which can be integrally injection molded with the lower housing. The limiting groove portion 3022 is along the axial direction of the lower housing 302. Figure 3 The second cam (shown in the vertical direction) has a certain height. During installation, the second cam 305 is inserted from above, so that the limiting step 3052 of the second cam 305 engages with the limiting groove 3022, allowing it to slide up and down along the limiting groove 3022. Simultaneously, the first limiting post 3024 is inserted into the limiting hole 3051. This prevents the second cam 305 from rotating in the circumferential direction, allowing it to only move up and down relative to the lower housing 302. This fit structure also ensures good coaxiality between the second cam 305 and the lower housing 302.
[0027] The first cam portion 304 engages with the output shaft 3033 of the motor 303 and can rotate together with the output shaft. Specifically, the first cam portion 304 has a shaped hole 3043 in its middle, which is adapted to the cross-sectional shape of the motor output shaft 3033, so that the first cam portion 304 can rotate with the rotation of the motor output shaft. A fixing plate 306 is also provided between the first cam portion 304 and the motor 303. The fixing plate 306 is generally plate-shaped and integrally formed from metal material. The fixing plate has a through hole 3061, which can be formed by stamping, forming a flange relative to the fixing plate body, and forming a fixing plate pressing part 30611, which is used to abut against the first cam portion 304. The through hole 3061 forms a through hole, through which the motor output shaft 3033 passes and is limitedly connected to the first cam portion 304. As a specific embodiment, the first cam portion 304 may also be provided with a cam pressing portion 3047, which protrudes on the shaft and is used to abut against the fixing plate pressing portion. In this structure, the fixing plate pressing portion 30611 abuts against the cam pressing portion 3047, which helps to prevent the first cam portion from hitting the fixing plate due to the reaction force and reduces the generation of noise.
[0028] Please refer to Figure 4 , Figure 4 This is a partial cross-sectional view of a fixing plate and a first cam portion in a pressing state according to an embodiment of this application. The fixing plate 306 is provided with a first mounting hole 3062, and correspondingly, the lower housing 302 is provided with a second mounting hole 3026. In this embodiment, there are four first mounting holes 3062 and four second mounting holes 3026. Of course, those skilled in the art will understand that the number of mounting holes can be set as needed and does not need to be limited. The fixing plate 306 is also provided with a limiting hole 3063, and correspondingly, the lower housing 302 is provided with a second limiting post 3027. The second limiting post 3027 can also be injection molded into an integral structure with the lower housing. During assembly, the limiting hole 3063 of the fixing plate 306 is fitted into the second limiting post 3027 to achieve a matching and limiting action. Then, by tightening the screw 308, which passes through the first mounting hole 3062 and the second mounting hole 3026, a fixed connection is established, causing the fixing plate pressing part 30611 of the fixing plate to abut against the cam pressing part 3047. The cooperation between the second limiting post and the limiting hole helps to ensure the relative position of the fixing plate and the lower housing, improving assembly accuracy.
[0029] As a derivative embodiment, the motor can also be fixed together with the fixing plate and the lower housing. The outer edge of the motor 303 is provided with several motor fixing holes 3031 and motor limiting holes 3034. In this embodiment, both the motor fixing holes 3031 and the motor limiting holes 3034 are holes located on the outer edge of the motor. Of course, they are not limited to being holes; for example, they can be designed as open slots, which can also achieve the purpose of positioning and fixing. After assembly, the motor fixing holes 3031 correspond to a portion of the second mounting holes 3026 in the lower housing, while the motor limiting holes 3034 correspond to the second limiting posts 3027 in the lower housing. Thus, by tightening the screws 308, which pass sequentially through the motor fixing holes 3031, the first mounting holes 3062 of the fixing plate, and the second mounting holes 3026 of the lower housing, the motor, the fixing plate, and the lower housing are fixedly connected together. This assembly method eliminates the need for separate motor fixing design; the second limiting post 3027 can simultaneously achieve relatively precise positioning of the motor and the fixing plate.
[0030] In the above embodiment, a fixed plate is fixedly connected to the lower housing, confining the first cam portion and the second cam portion between the fixed plate and the lower housing. The reaction force generated by the second cam portion during operation is applied to the fixed plate through the first cam portion. Since the fixed plate is fixedly connected to the lower housing, this reaction force is transmitted to the lower housing, forming a mechanical balance. Compared to the prior art solution, there are fewer force-bearing parts, which is beneficial to improving the stroke accuracy of the second cam portion. Furthermore, in this technical solution, the reaction force is basically not transmitted to the motor and the upper housing. Therefore, the strength requirement for the upper housing is relatively low, which can further reduce the production cost of the upper housing.
[0031] Please refer to Figure 5 , Figure 5 This is a schematic diagram of the structure of a first cam portion according to an embodiment of this application. The first cam portion 304 includes a first body portion 3044 and a first annular portion 3045. The first body portion 3044 is generally plate-shaped, and the first annular portion 3045 is provided on the outer edge of one side of the first body portion 3044. The first annular portion 3045 extends axially from the first body portion 3044. The first annular portion 3045 has a first protrusion portion 3041, which is relatively farther away from the first body portion 3044. Figure 5Based on the indicated direction, the first protrusion 3041 is located at the bottommost end of the first cam portion 304. The first cam portion 304 also includes a first concave portion 3042, which is relatively closer to the first body portion 3044. The first concave portion 3042 can be a recessed portion of a single first annular portion or a notch formed between two first annular portions. A first transition portion 3046 is formed between the first protrusion 3041 and the first concave portion 3042, and the height of the first transition portion 3046 gradually decreases along the direction from the first protrusion 3041 to the first concave portion 3042. In this embodiment, as... Figure 5 As shown, there are two first annular portions 3045, and the notch formed between two adjacent first annular portions 3045 is the first concave portion 3042. In this embodiment, two first protruding portions 3041 and two first concave portions 3042 are provided, and correspondingly, the number of first transition portions 3046 is four. When the first cam portion 304 engages with the second cam portion 305, as the first cam portion 304 rotates, the first cam portion 304 will move along the engaging portion of the second cam portion 305 with the first protruding portion 3041. The outer edge of the first body portion 3044 is provided with a first engaging groove 30441 and a second engaging groove 30442. Along the height direction of the first cam portion 304, the first engaging groove 30441 and the second engaging groove 30442 have different axial positions, that is, the first engaging groove 30441 is closer to the top of the first cam portion 304, and the second engaging groove 30442 is farther away from the top of the first cam portion 304. The first and second engagement slots are used to mate with the swing arm assembly described below.
[0032] Please refer to Figure 6 , Figure 6 This is a schematic diagram of the structure of a second cam portion according to an embodiment of this application. The second cam portion 305 includes a second body portion 3053 and a second annular portion 3054. The second body portion 3053 is generally plate-shaped, and the second annular portion 3054 is provided on the outer edge of one side of the second body portion 3053. The second annular portion 3054 extends axially from the second body portion 3053. Along the assembly direction of the first cam portion 304 and the second cam portion 305, the extending direction of the second annular portion 3054 is opposite to the extending direction of the first annular portion 3054, that is, they extend towards each other. The second annular portion 3054 has a second protrusion portion 3055, which is relatively farther away from the second body portion 3053. Figure 6Based on the indicated direction, the second protrusion 3055 is located at the top of the second cam portion 305. The second cam portion 305 also includes a second concave portion 3056, which is relatively closer to the first body portion 3044. The second concave portion 3056 can be a recessed portion of an integral second annular portion or a notch formed between two second annular portions. A second transition portion 3057 is formed between the second protrusion 3055 and the second concave portion 3056. The height of the second transition portion 3057 gradually decreases along the direction from the second protrusion 3055 to the second concave portion 3056, and the contour shape of the second transition portion 3057 matches the contour shape of the first transition portion 3046. In this embodiment, as... Figure 6 As shown, there are two second annular portions 3054, and the notch formed between two adjacent second annular portions 3054 is the second concave portion 3056. In this embodiment, two second protruding portions 3055 and two second concave portions 3056 are provided. Correspondingly, the number of second transition portions 3057 is four. The second cam portion 305 includes a drive shaft 31, as shown... Figure 1 As shown, the drive shaft 31 can abut against the valve stem 42 of the core assembly 40, so that the core assembly as a whole can be displaced along the axial direction of the connecting seat 20.
[0033] Please refer to Figure 7 , Figure 8 , Figure 7 This is a schematic diagram of the first state of the first cam portion and the second cam portion cooperating according to an embodiment of this application. Figure 8 This is a schematic diagram illustrating a second state of cooperation between the first cam portion and the second cam portion, according to an embodiment of this application. For example... Figure 7 As shown, the first transition portion 3046 of the first cam portion 304 is in contact with the second transition portion 3057. At this time, the relative distance between the first cam portion 304 and the second cam portion 305 in the axial direction is the closest. Figure 8 As shown, since the second cam portion 305 can only be displaced axially and cannot rotate circumferentially, when the first cam portion 304 rotates, the first protrusion portion 3041 can move along the surface of the second transition portion 3057, thereby pushing the second cam portion 305 and causing it to displace downwards until the first protrusion portion 3041 abuts against the second protrusion portion 3055 of the second cam portion 305. At this point, the relative distance between the first cam portion 304 and the second cam portion 305 in the axial direction is the greatest. As the first cam portion 304 continues to rotate, the first protrusion portion 3041 will continue to move along the adjacent second transition portion 3057, causing one of the first transition portions 3046 to again come into contact with one of the second transition portions 3057, so that the first cam portion and the second cam portion are once again in a state of closest relative distance in the axial direction.
[0034] Please refer to Figure 9 , Figure 10 , Figure 9 This is a partial view of a working state of a driving device provided in one embodiment of this application. Figure 10 This is a partial view of another working state of the drive device provided in one embodiment of this application. The lower housing 302 is provided with a positioning shaft portion 3028, which can be integrally injection molded with the lower housing. The swing arm assembly 307 includes a first swing arm portion 3071 and a second swing arm portion 3072. The first swing arm portion 3071 includes a first swing arm hole portion 30711, which is sleeved on the positioning shaft portion 3028 and can rotate relative to the positioning shaft portion 3028. The second swing arm portion 3072 includes a second swing arm hole portion 30721, which is sleeved on the positioning shaft portion 3028 and can rotate relative to the positioning shaft portion 3028. The second swing arm portion 3072 is closer to the bottom surface of the lower housing than the first swing arm portion 3071. Figure 9 Based on the view shown, the second swing arm portion 3072 is located below the second swing arm portion 3071. After assembly, the first swing arm portion 3071 and the first engaging groove 30441 of the first cam portion 304 have approximately the same height, or in other words, they are approximately flush in the horizontal direction. The second swing arm portion 3072 and the second engaging groove 30442 have approximately the same height, or in other words, they are approximately flush in the horizontal direction. The first swing arm portion 3071 includes a first engaging portion 30712 and a first abutting portion 30713, with the first engaging portion 30712 facing towards the first cam portion 304 and the first abutting portion 30713 facing away from the first cam portion 304. The second swing arm portion 3072 includes a second engaging portion 30722 and a second abutting portion 30723, with the second engaging portion 30722 facing towards the first cam portion 304 and the second abutting portion 30723 facing away from the first cam portion 304. In this embodiment, the first swing arm portion 3071 is integrally injection molded, and the second swing arm portion 3072 can also be integrally injection molded. This processing method is beneficial to improving the strength of the first and second swing arm portions. The first engaging portion 30712 can abut and engage with the first engaging groove 30441, making the first engaging portion 30712 closer to the first cam portion 304, while the first abutting portion 30712 is away from the spring piece 310 described below, i.e. Figure 10The state is shown. The second engaging portion 30722 can abut and engage with the second engaging groove 30442. The second engaging portion 30722 is closer to the first cam portion 304, while the second abutting portion 30712 is farther away from the spring piece 310 described below. When one of the first engaging portion and the second engaging portion engages with the corresponding groove of the first cam portion, the other does not engage with the corresponding groove, but only abuts with the outer edge of the body portion of the first cam portion. In other words, there will not be a situation where the first engaging portion engages with the first engaging groove at the same time as the second engaging portion engages with the second engaging groove, and vice versa.
[0035] Please refer to Figure 11 , Figure 11 This is a schematic diagram of the lower housing structure provided in one embodiment of this application. The lower housing 302 is provided with a spring clip constraint part 3029, which is provided with a spring clip support part 30291 and a spring clip positioning part 30292. The spring clip support part 30291 is used to support the spring clip, and the spring clip positioning part 30292 is used to position the spring clip, thereby ensuring good assembly accuracy and improving assembly consistency when the spring clip is installed in the lower housing. The spring clip support part 30291 and the spring clip positioning part 30292 can have various configurations. In one embodiment, such as... Figure 11 As shown, the spring clip constraint portion 3029 extends from the bottom surface of the lower housing 302 upwards as illustrated. The spring clip constraint portion includes a first pressure-bearing surface 30293 and a second pressure-bearing surface 30294, both of which are generally arc-shaped and can abut against the spring clip 310, facilitating support of the spring pressure. The spring clip constraint portion also includes a spring clip seat 30295, which can be integrally injection molded with the spring clip constraint portion. A spring clip positioning portion 30292 is located in the spring clip seat 30295, and can achieve mating positioning of the spring clip, thus improving the assembly accuracy of the spring clip.
[0036] Please refer to Figure 12 , Figure 12 This is a schematic diagram of the structure of a spring sheet provided in one embodiment of this application. The spring sheet 310 includes a first spring sheet arm 3101, a second spring sheet arm 3102, and a spring sheet fixing part 3103. In this embodiment, the first spring sheet arm, the second spring sheet arm, and the spring sheet fixing part are integrally formed from metal material. The spring sheet fixing part 3103 is located in the middle of the spring sheet, and the first spring sheet arm 3101 and the second spring sheet arm 3102 are respectively located on both sides of the spring sheet fixing part 3103. The spring sheet fixing part 3103 is bent relative to the first spring sheet arm and the second spring sheet arm, that is, the extension direction of the spring sheet fixing part 3103 has a certain angle with the extension direction of the first spring sheet arm or the second spring sheet arm. In the axial direction, the first spring sheet arm 3101 and the first swing arm part 3071 have approximately the same height and are configured such that the first swing arm part 3071 extends along... Figure 9 When the device swings clockwise as shown, it can push the first spring arm 3101 to move clockwise as well, thereby abutting against one of the inserts described below. Similarly, the second spring arm 3102 has approximately the same height as the second swing arm 3072 and is configured such that the second swing arm 3072 moves along... Figure 9 When the spring swings counterclockwise as shown, it can push the second spring arm 3102 to move counterclockwise as well, thereby abutting against the other insert as described below. The spring fixing part 3103 includes a first spring limiting part 31031 and a second spring limiting part 31032. Correspondingly, the spring positioning part 30292 of the lower housing is grooved, and the width of the groove matches the width of the spring fixing part 3103. This allows the first spring limiting part 31031 and the second spring limiting part 31032 to be constrained and positioned by the spring positioning part 30292 after the spring is assembled into the lower housing, thus achieving better positional accuracy after the spring is assembled. To fix the spring piece to the lower housing, a spring piece hole 31033 can be provided on the spring piece 310. Correspondingly, the spring piece seat 30295 is provided with a columnar portion 30296. The spring piece 310 is fixedly connected by fitting the spring piece hole 31033 onto the columnar portion 30296, thereby achieving more precise positioning. The columnar portion 30296 can adopt various structural forms. As a derivative embodiment, the columnar portion 30296 can be set as an expansion pin structure. After the spring piece is fitted, the expansion pin will expand, which can limit the spring piece from disengaging, thereby locking the spring piece and preventing it from falling out, thus achieving higher reliability. Of course, the columnar portion can also be set as other possible structures, such as deforming the end of the columnar portion after the spring piece is assembled to prevent the spring piece from falling out, or providing external threads at the end of the columnar portion, and screwing a nut into the end of the columnar portion after the spring piece is assembled to prevent the spring piece from falling out, etc., which will not be elaborated here.
[0037] The spring support portion 30291 is located on the same side of the first pressure-bearing surface 30293 and the second pressure-bearing surface 30294, that is, on the side of the spring restraint portion 3029 facing the first cam portion 304. The spring support portion 30291 is provided with at least a partial flat portion, so that when the spring 310 undergoes elastic deformation, it can support the spring, which helps to reduce the deformation of the spring in the bending part and improve the stability of the spring operation. In order to further limit the spring 310, a spring abutment portion 30297 can also be provided. The spring abutment portion 30297 and the spring restraint portion 3029 are staggered and form a slit-like groove between them. The width of the groove matches the thickness of the spring 310 or is slightly larger than the thickness of the spring. During assembly, the spring 310 can be inserted into the groove, which can further improve the installation accuracy of the spring and limit the displacement of the spring 310 toward the swing arm assembly. In other words, the spring restraint part 3029 and the spring abutment part 30297 together position the middle part of the spring, which is beneficial to the positional accuracy of the first swing arm and the second swing arm of the spring.
[0038] The end of the first spring arm 3101 is provided with a first spring contact 31011, which is oriented in the opposite direction to the swing arm assembly. The end of the second swing arm 3202 is provided with a second spring contact 31021, which is also oriented in the opposite direction to the swing arm assembly.
[0039] The lower housing is provided with a insert positioning part 3025 for fixing the insert. The insert positioning part can be integrally injection molded with the lower housing. In this embodiment, there are two insert positioning parts 3025, which are integrated with the spring restraint part 3029. This method can enhance the strength of the spring restraint part and the insert positioning part. Of course, the insert positioning part 3025 can also be integrally injection molded with the lower housing while being separate from the spring restraint part. These equivalent transformations can all achieve the positioning of the insert, and this embodiment does not limit this. Taking one insert positioning part as an example, the insert positioning part 3025 is provided with a first insert locking part 30251 and a second insert locking part 30252, and the first insert locking part 30251 and the second insert locking part 30252 have a certain included angle. The insert positioning part includes at least two plate-shaped parts with a certain angle. Figure 11 In the embodiment shown, as a specific structure, the two plate-shaped parts are generally perpendicular, with a groove formed in one plate-shaped part as the first insert slot 30251, and a groove formed in the other plate-shaped part as the second insert slot 30252.
[0040] The insert 309 includes a first insert 3091, a second insert 3092, and a third insert 3093. The second insert 3092 serves as a common terminal and is electrically connected to one port of the motor. The spring 310 is electrically connected to the other port of the motor via a spring fixing part 3103. The electrical connection can employ common connection methods in the art, such as wire connections, and is not limited here. Thus, the first insert 3091, spring 310, and second insert 3092 can form one circuit; and the second insert 3092, spring 310, and third insert 3092 can form another circuit. The insert 309 is connected to a controller (not shown in the figure), allowing the first insert 3091 and second insert 3092 to be energized simultaneously, or the second insert 3092 and third insert 3093 to be energized simultaneously.
[0041] Taking the first insert 3091 as an example, the first insert 3091 includes an insert connecting end 30911 and an insert fixing end 30912. The insert fixing end 30912 has at least one bent portion. In a specific embodiment, the insert fixing end 30912 has two bent portions, so that the insert fixing end 30912 is simultaneously inserted into the first insert locking portion 30251 and the second insert locking portion 30252. In this way, the insert positioning portion 3025 can provide at least two directions of limiting for the first insert, which is beneficial to effectively limit the first insert 3091. The end of the insert fixing end 30912 is provided with a first insert contact 30913. The spring contact 30913 is used to abut against the first spring contact 31011 mentioned above. When in an energized state, it can connect the circuit. The third insert 3093 can have the same structure as the first insert 3091, with a second insert contact 30931, and is fixed to another insert positioning part 3025, which will not be described in detail here.
[0042] When in Figure 9In the working state shown, the first contact part 30713 pushes the first spring arm 3101 of the spring in a clockwise direction, causing the first spring contact 31011 to abut against the first insert contact 30913. At this time, the first insert 3091 and the second insert 3092 are energized, and the current forms a circuit between the second insert 3092, the motor 303, the spring 310, and the first insert 3091. The motor 303 rotates, driving the first cam part 304 to rotate. When it rotates to a certain angle, the second engaging part 30722 disengages from the second engaging groove 30442 and abuts against the outer edge of the first body part 3044, causing the second swing arm part 3072 to swing counterclockwise as shown in the figure, pushing the second spring contact 31021 of the second spring arm 3102 to abut against the second insert contact 30931 of the third insert 3093. As the first cam portion 304 continues to rotate, when the first engaging portion 30712 abuts against the first engaging groove 30441 under the elastic force of the spring piece 310, the first swing arm portion 3071 swings counterclockwise as shown in the figure, causing the first spring piece contact 31011 of the first spring piece arm 3101 to disengage from the first spring piece contact 30911. At this time, the motor is de-energized and stops running, forming... Figure 10 The working status shown.
[0043] Conversely, when in Figure 10 In the operating state shown, the second insert 3092 and the third insert 3093 are energized, and a current circuit is formed between the second insert 3092, the motor 303, the spring 310, and the third insert 3093. The motor 303 rotates, driving the first cam 304 to rotate. When it rotates to a certain angle, the second engaging part 30722 abuts against the second engaging groove 30442 under the elastic force of the spring 310. The second swing arm 3072 swings clockwise as shown in the figure, causing the second spring contact 31021 of the second spring arm 3102 to disengage from the second insert contact 30931. At this time, the motor is de-energized and stops running, forming... Figure 9 The working status shown.
[0044] It should be noted that the directional terms such as "up," "down," "left," and "right" mentioned herein are all introduced for ease of description, based on the accompanying drawings; and the ordinal numbers such as "first" and "second" in the component names are also introduced for ease of description and do not imply any limitation on the order of the components. Furthermore, the technical features in the above embodiments can be partially replaced or combined in various ways to form new embodiments. The descriptions of the above embodiments are only for helping to understand the method and core ideas of the present invention and are not intended to limit the present invention in any way.
Claims
1. A driving device, characterized in that, The device includes a lower housing (302) and a spring piece (310). The lower housing (302) is provided with a spring piece constraint part (3029). The spring piece constraint part (3029) is provided with a spring piece support part (30291) and a spring piece positioning part (30292). The spring piece (310) includes a spring piece fixing part (3103). The spring piece fixing part (3103) is fixedly connected to the spring piece positioning part (30292). The spring piece support part (30291) is provided with at least a partial flat part. The spring piece (310) can abut against the spring piece support part (30291). The spring clip constraint part (3029) is integrally formed with the lower housing (302). The spring clip constraint part (3029) extends upward from the bottom surface of the lower housing (302). The spring clip constraint part (3029) includes a first pressure-bearing surface (30293) and a second pressure-bearing surface (30294). The first pressure-bearing surface (30293) and the second pressure-bearing surface (30294) can support the spring clip (310). It also includes a spring abutment part (30297), which is staggered with the spring restraint part (3029). A slit-shaped groove is formed between the spring abutment part (30297) and the spring restraint part (3029). The width of the groove matches the thickness of the spring (310). The spring abutment part (30297) can abut against the spring (310).
2. The driving device as described in claim 1, characterized in that, The spring restraint part (3029) includes a spring seat (30295), the spring positioning part (30292) is located on the spring seat (30295), and the spring seat (30295) and the spring restraint part (3029) are integrally injection molded.
3. The driving device as described in claim 2, characterized in that, The spring clip fixing part (3103) includes a first spring clip limiting part (31031) and a second spring clip limiting part (31032). The width of the spring clip positioning part (30292) matches the width of the spring clip fixing part (3103). The first spring clip limiting part (31031) and the second spring clip limiting part (31032) are constrained by the spring clip positioning part (30292) to achieve positioning.
4. The driving device as described in claim 3, characterized in that, The spring holder (30295) is provided with a columnar part (30296), and the spring fixing part (3103) includes a spring hole part (31033). The spring hole part (31033) is sleeved on the columnar part (30296), and the spring hole part (31033) is fixedly connected to the columnar part (30296).
5. The driving device as described in claim 4, characterized in that, The columnar part (30296) is an expansion pin structure. After the spring piece hole (31033) is fitted into the columnar part (30296), the columnar part (30296) can restrict the spring piece (310) from disengaging.
6. The driving device as claimed in claim 1, characterized in that, The spring support (30291) is located on the same side of the first pressure-bearing surface (30293) and the second pressure-bearing surface (30294) of the spring restraint (3029).
7. The driving device as claimed in claim 1, characterized in that, The spring (310) further includes a first spring arm (3101) and a second spring arm (3102). The spring (310) is integrally formed of metal material. The first spring arm (3101) and the second spring arm (3102) are located on both sides of the spring fixing part (3103). The extension direction of the spring fixing part (3103) has an angle with the extension direction of the first spring arm (3101) and the second spring arm (3102).
8. The driving device as claimed in claim 1, characterized in that, The spring (310) also includes a first spring arm (3101) and a second spring arm (3102). The spring (310) is integrally formed of metal material. The first spring arm (3101) and the second spring arm (3102) are located on both sides of the spring fixing part (3103). The first spring arm (3101) can abut against the first pressure bearing surface (30293), and the second spring arm (3102) can abut against the second pressure bearing surface (30294).
9. A water valve, comprising a valve body (10), a connecting seat (20), a driving device (30), and a core assembly (40), characterized in that, The drive device (30) is the drive device according to any one of claims 1-6.