Valve element structure of electric heating faucet

Abstract

The utility model discloses an electric heating faucet valve element structure which comprises a base. An abutting groove is formed in the inner wall of the shell; a static ceramic chip and a movable ceramic chip; a pin groove is formed in the handle in the axial direction, the pin groove comprises a bottom groove and a top groove which are coaxially arranged, and the hole diameter of the top groove is larger than that of the bottom groove; the spring penetrates through the pin groove, and the outer diameter of the spring is the same as the aperture of the bottom groove; the gear pin penetrates through the pin groove, the bottom of the gear pin abuts against the spring, and the top of the gear pin extends into the abutting groove. The hole diameter of the top groove is larger than that of the bottom groove, so that when the handle rotates to the abutting groove in the shell, a part of left and right allowance is reserved for the spring and the gear pin, the gear pin can enter the abutting groove very well instantly under the action of the spring, and a sound is made to remind a user that the handle rotates in place and the valve element is closed. According to the valve element structure, the qualified rate of machined products is high, the risk that the posture is abnormal when a gear pin enters an abutting groove is reduced, and the service life of the valve element structure is prolonged.

Description

Technical Field

[0001] The present application relates to the field of electric hot water faucet valve cores, and in particular to an electric hot water faucet valve core structure. Background Art

[0002] Electric faucets used in everyday life switch between hot and cold water via a valve in the handle. The general logic is to switch the handle to the middle position, with cold water flowing in the middle position. Moving the handle down or right switches to cold water, while moving it up or left switches to hot water. Whether using hot or cold water, the handle always starts small and gradually increases. Because the heating element continues to release heat for a while after powering off, the water inside can become too hot. If the faucet is opened again shortly afterward, the water may be too hot to touch. Furthermore, high temperatures can accelerate scale formation on the surface of the heating element, shortening its lifespan. Therefore, the instruction manual for electric faucets instructs users not to turn off the water flow immediately after using hot water. Instead, switch the handle to the cold water position for a period of time to allow the hot water in the heating chamber to drain before turning it off. This prevents burns caused by the high-temperature water flowing during use. However, due to user habits, people often forget to switch the handle to the cold water position after using hot water, instead turning the water off immediately.

[0003] During the assembly of the valve core, lubricating grease will be added to the friction surface at the top of the valve core shell and the supporting surface at the bottom of the handle. When the above two spring components come into contact with a small amount of lubricating grease, the gear pin will have an abnormal posture when entering the pit, resulting in no sound when the gear pin enters the pit, which greatly increases the unqualified rate of this product.

[0004] In summary, the valve core structure of the existing electric water faucet still has certain limitations, resulting in a high rate of unqualified valve core structures, which not only increases the production cost of the enterprise, but also greatly causes a waste of resources. Summary of the Invention

[0005] To improve the pass rate of processed electric faucet valve core structures and reduce production costs, this application provides an electric faucet valve core structure. By making the aperture of the top groove larger than that of the bottom groove, a portion of margin is reserved for the spring and the shift pin when the handle is rotated to the abutment groove on the housing. This allows the shift pin to instantly and effectively enter the abutment groove under the action of the spring's elastic force and emit a sound to prompt the user that the handle has been fully rotated and the valve core has been closed. This not only increases the pass rate of the processed valve core structure, but also reduces the risk of the shift pin's abnormal posture when entering the abutment groove, and at the same time extends the service life of the valve core structure.

[0006] This application provides an electric water faucet valve core structure, which adopts the following technical solutions:

[0007] An electric hot water faucet valve core structure, comprising:

[0008] base;

[0009] The outer shell is detachably fixedly connected to the base, and an abutment groove is provided on the inner wall;

[0010] Static ceramic piece, fixed on the base;

[0011] The moving ceramic piece is located on the side of the static ceramic piece away from the base;

[0012] The handle is fixedly connected to the movable porcelain piece and rotatably connected to the housing. It is located on the side of the movable porcelain piece away from the static porcelain piece, and a pin groove is opened on the handle along the axial direction. The pin groove includes a bottom groove and a top groove. The aperture of the top groove is larger than the aperture of the bottom groove, and the top groove and the bottom groove are coaxial.

[0013] The spring is inserted into the pin slot, and the outer diameter of the spring is the same as the hole diameter of the bottom slot;

[0014] The gear pin is inserted into the pin slot, with the bottom of the side end abutting against the spring, and the top extending into the abutment slot abutting against the housing;

[0015] An inner sealing ring, located between the static ceramic plate and the base; and

[0016] The outer sealing ring is provided on the base and is located on the side of the base away from the static ceramic piece;

[0017] The static ceramic piece and the dynamic ceramic piece are both located between the shell and the base, a portion of the handle is located between the shell and the base, and another portion of the handle passes through the shell and is located on a side of the shell away from the base.

[0018] Preferably, the lower half of the shift pin is inserted into the spring, and the bottom of the side end of the shift pin abuts against the spring.

[0019] Preferably, the top of the shift pin is spherical, and the shape of the abutment groove is a truncated cone-shaped groove that matches the top of the shift pin.

[0020] Preferably, the connection between the top groove and the bottom groove is a smooth variable diameter connection curved surface.

[0021] Preferably, the inner wall of the top groove is a smooth variable diameter curved surface, and the diameter of the hole of the top groove gradually increases toward the side away from the bottom groove.

[0022] Preferably, the shell is snap-connected with the base, a buckle is provided on the base, a slot is provided on the shell, and the buckle is snap-connected in the slot.

[0023] Preferably, an anti-rotation protrusion is provided on the base, an anti-rotation groove is provided on the static ceramic plate, and the anti-rotation protrusion is located in the anti-rotation groove.

[0024] Preferably, the handle is provided with a rotating protrusion, the movable porcelain piece is provided with a rotating groove, and the rotating protrusion is located in the rotating groove.

[0025] Preferably, an anti-slip groove is provided on the handle.

[0026] Preferably, the top surface inside the shell that contacts the shift pin is a slope, and the top surface of the side end of the handle close to the slope is a plane, and the distance between the plane and the slope increases with the increase of the rotation angle of the handle, wherein when the shift pin is located in the abutment groove, the rotation angle of the handle is zero degrees, and the rotation angle gradually increases when the handle rotates toward both sides away from the shift pin.

[0027] In summary, this application has the following beneficial technical effects:

[0028] 1. This application makes the top slot larger than the bottom slot, allowing the spring and shift pin to retain some clearance when the handle rotates to the abutment slot on the housing. This allows the shift pin to instantly and effectively enter the abutment slot under the spring's elastic force, producing a sound to alert the user that the handle has been fully rotated and the valve core has closed. This results in a high pass rate for the manufactured valve core structure and reduces the risk of the shift pin engaging in an abnormal position when entering the abutment slot, extending the service life of the valve core structure.

[0029] 2. This application sets the top of the shift pin into a spherical shape and the abutment groove into a conical groove that matches the top of the shift pin, so that when the shift pin rotates to the abutment groove, the top of the shift pin can better enter the abutment groove and make a sound, which can effectively remind the user that the valve core is closed, and the spherical structure also allows the top of the shift pin to easily detach from the abutment groove.

[0030] 3. This application makes the connection between the top groove and the bottom groove a smooth variable-diameter connection surface and the inner wall of the top groove a smooth variable-diameter surface, so that the top groove is easier to process, and the inner wall of the top groove and the connection with the bottom groove are smoother and more fluent, the spring is not easy to get stuck, and the spring can be more flexible.

[0031] 4. The application proposes that the top surface of the housing that contacts the gear pin be set as an inclined surface, so that when the handle drives the gear pin to rotate back and forth, the gear pin is not likely to tilt forward, so that when the gear pin rotates to the abutment groove, it can better enter the pit instantly and make a sound. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the valve core structure in the embodiment of the present application.

[0033] Figure 2 yes Figure 1 Exploded diagram.

[0034] Figure 3 yes Figure 1 Schematic diagram of the structure with the middle part of the structure cut away.

[0035] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure of part A.

[0036] Figure 5 It is an enlarged view of a part of the structure of the shell cross-sectional view in the embodiment of the present application, and the enlarged view is in a tilted state.

[0037] Explanation of the accompanying drawings: 1. Base; 11. Buckle; 12. Anti-rotation protrusion; 2. Housing; 21. Slot; 22. Abutment groove; 23. Inclined surface; 3. Static ceramic piece; 31. Anti-rotation groove; 4. Moving ceramic piece; 41. Rotation groove; 5. Handle; 51. Rotation protrusion; 52. Anti-slip groove; 53. Pin groove; 531. Bottom groove; 532. Top groove; 6. Spring; 7. Shift pin; 8. Inner sealing ring; 9. Outer sealing ring. DETAILED DESCRIPTION

[0038] The present application is further described in detail below with reference to the accompanying drawings.

[0039] The embodiment of the present application discloses a valve core structure of an electric water faucet.

[0040] Reference Figure 1 and Figure 2 The electric faucet valve core structure includes a base 1, a shell 2, a static porcelain piece 3, a dynamic porcelain piece 4, a handle 5, a spring 6, a gear pin 7, an inner sealing ring 8, and an outer sealing ring 9.

[0041] The base 1 is used to be connected to a water inlet pipe, a cold water outlet pipe and a hot water outlet pipe.

[0042] The housing 2 is detachably connected and fixed to the base 1. Methods of detachable and fixed connection include, but are not limited to, plug-in connection, snap-on connection, threaded connection, and bolt connection. In this embodiment, the housing 2 is snap-connected to the base 1. Specifically, the base 1 is provided with a snap 11, and a slot 21 is defined on a side end of the housing 2. The snap 11 is snap-connected to the slot 21.

[0043] Reference Figure 2 The static ceramic piece 3 is fixed on the base 1. Specifically, an anti-rotation protrusion 12 is formed on the base 1, and an anti-rotation groove 31 is opened on the static ceramic piece 3. The anti-rotation protrusion 12 is located in the anti-rotation groove 31. The base 1 prevents the static ceramic piece 3 from rotating on the base 1 through the cooperation between the anti-rotation protrusion 12 and the anti-rotation groove 31.

[0044] The moving ceramic piece 4 is located on a side of the static ceramic piece 3 away from the base 1 , and the moving ceramic piece 4 is in contact with the static ceramic piece 3 . Both the moving ceramic piece 4 and the static ceramic piece 3 are located between the housing 2 and the base 1 .

[0045] Reference Figure 2 The handle 5 is located on a side of the movable ceramic plate 4 away from the static ceramic plate 3. The handle 5 is fixedly connected to the movable ceramic plate 4 and is used to drive the movable ceramic plate 4 to rotate. The handle 5 is rotatably connected to the housing 2. Specifically, the handle 5 is formed with a rotating protrusion 51, and the movable ceramic plate 4 is formed with a rotating groove 41. The rotating protrusion 51 is located in the rotating groove 41. The handle 5 drives the movable ceramic plate 4 and the static ceramic plate 3 to rotate relative to each other through the cooperation of the rotating protrusion 51 and the rotating groove 41.

[0046] A portion of the handle 5 is located between the shell 2 and the base 1, and a through hole is provided on the end of the shell 2 away from the base 1, and the other portion of the handle 5 passes through the through hole in the shell 2 and extends out of the shell 2. In this embodiment, one axial side of the handle 5 is located between the shell 2 and the base 1, and a through hole is provided on the end of the shell 2 away from the base 1, and the other side of the handle 5 passes through the through hole in the shell 2 and extends out of the shell 2, and is located on the side of the shell 2 away from the base 1.

[0047] Reference Figure 2 and Figure 3 In order to make it easier for the user to rotate the handle 5, an anti-slip groove 52 is provided on the outer wall of the handle 5 located outside the shell 2. When in use, the user can rotate the handle 5 by grasping the anti-slip groove 52.

[0048] Reference Figure 2 and Figure 4 A pin groove 53 is provided on the handle 5 along its own axial direction, wherein the pin groove 53 includes a bottom groove 531 and a top groove 532, the bottom end of the top groove 532 is connected to and communicated with the top end of the bottom groove 531, and the top groove 532 is coaxial with the bottom groove 531, and the aperture of the top groove 532 is larger than the aperture of the bottom groove 531.

[0049] Specifically, refer to Figure 4 In this embodiment, the bottom groove 531 is a cylindrical groove, and the upper and lower portions of the top groove 532 are both tapered grooves that are larger at the top and smaller at the bottom. The cross-section of the top groove 532 can be circular, elliptical, or other closed geometric shapes. Specifically, the inner wall of the lower portion of the top groove 532 is a smooth, variable-diameter connecting curved surface, and the inner wall of the upper portion of the top groove 532 is also a smooth, variable-diameter curved surface. Furthermore, the aperture of the upper portion of the top groove 532 gradually increases toward the side away from the bottom groove 531. In other words, the upper portion of the top groove 532 is an outward-facing bell-shaped mouth, and the inner wall of the upper portion of the top groove 532 is an inclined surface, preferably with an inclination angle of 2 to 3 degrees.

[0050] In this embodiment, the processing and opening method of the top groove 532 and the bottom groove 531 can be adopted as follows: first, a milling cutter is used to drill holes at the top groove 532 and the bottom groove 531 to form the bottom groove 531, and then the milling cutter is raised to a certain height and tilted to both sides of the axial direction of the bottom groove 531 in succession, so that the milling cutter processes the two side walls of the top groove 532, wherein the two sides of the axial direction of the bottom groove 531 are rotated with the axis of the handle 5 as the center axis.

[0051] Reference Figure 2 and Figure 4 The spring 6 is inserted into the pin groove 53 , and the outer diameter of the spring 6 is the same as the aperture of the bottom groove 531 .

[0052] The gear pin 7 is also inserted into the pin groove 53, and the gear pin 7 abuts against the spring 6, and the top of the gear pin 7 abuts against the shell 2. Specifically, an abutment groove 22 is provided on the inner wall of the shell 2. The abutment groove 22 is located on the side of the shell 2 close to the movable porcelain plate 4. During the rotation of the handle 5, the top of the gear pin 7 can extend into the abutment groove 22 and abut against the shell 2. Preferably, the top of the gear pin 7 is spherical, and the shape of the abutment groove 22 is a truncated cone groove that matches the spherical shape of the top of the gear pin 7. The truncated cone groove not only facilitates the top of the gear pin 7 to enter the abutment groove 22, but also facilitates the top of the gear pin 7 to disengage from the abutment groove 22 when the handle 5 is rotated, so that the user can open the valve core.

[0053] Reference Figure 2 In order to improve the abutment effect between the gear pin 7 and the spring 6, the lower half of the gear pin 7 is inserted into the spring 6, and the lower half of the gear pin 7 can be a cylinder.

[0054] The inner sealing ring 8 is installed on the base 1 and is located between the base 1 and the static ceramic piece 3 . The inner sealing ring 8 is used for sealing between the base 1 and the static ceramic piece 3 .

[0055] The outer sealing ring 9 is also installed on the base 1. The outer sealing ring 9 is located on the side of the base 1 away from the static porcelain piece 3. The outer sealing ring 9 is used to seal between the base 1 and the hot and cold water pipes.

[0056] Among them, the inner sealing ring 8 and the outer sealing ring 9 are both three-hole sealing rings, and three-hole grooves for installing the inner sealing ring 8 and the outer sealing ring 9 are opened on both sides of the base 1. The inner sealing ring 8 and the outer sealing ring 9 are respectively located in the three-hole grooves on both sides of the base 1.

[0057] In an implementable embodiment, in the existing valve core structure, the top surface inside the shell that contacts the shift pin and the top surface of the side end close to the handle are parallel surfaces. During use, since the user does not necessarily rotate the handle in one direction, the handle may be rotated left and right, which may cause the shift pin to tilt forward when the handle is rotated in the opposite direction. This makes the sound made by the shift pin when it finally enters the abutment groove inconsistent with the sound made during normal use or no sound is made, and it is easy to reduce the fatigue life of the spring, resulting in the need to replace the spring prematurely.

[0058] Based on the above problems, refer to Figure 5 In order to better contact the shift pin 7 with the top surface inside the housing 2, better control the posture of the shift pin 7 as the handle 5 rotates, and reduce the risk of the shift pin 7 tilting forward as the handle 5 rotates, the top surface inside the housing 2 that contacts the shift pin 7 is set as an inclined plane, referred to as the inclined plane 23. The top surface of the side end of the handle 5 close to the inclined plane is a plane. After the valve core structure is installed, the inclined plane 23 is not parallel to the plane, and the distance between the plane and the inclined plane 23 increases with the increase of the rotation angle of the handle. When the shift pin is located in the abutment groove, the rotation angle of the handle is zero degrees. When the handle is rotated away from the shift pin, the rotation angle gradually increases. The inclination angle of the inclined plane 23 is relatively small. In actual application, the inclination angle of the inclined plane 23 can be freely set according to actual conditions.

[0059] By setting the top surface of the shell 2 that contacts the shift pin 7 as a slope 23, when the handle 5 is rotated, the direction of the friction force of the top surface of the shell 2 on the shift pin 7 is not horizontal, but inclined upward, so that when the handle 5 is rotated in the opposite direction, the horizontal component of the upward friction force is not enough to overcome the horizontal component of the elastic force of the spring 6 on the shift pin 7, so that when the handle 5 is rotated in the opposite direction, the shift pin 7 is not likely to tilt forward, so that when the handle 5 is subsequently rotated to the abutment groove 22, it can better enter the pit instantly and make a normal sound.

[0060] When the handle 5 is in use, the ceramic disc 4 is rotated by rotating the handle 5 to rotate, thereby realizing the switching of hot and cold water. When the gear pin 7 rotates to the abutment groove 22, the top of the gear pin 7 extends into the abutment groove 22 under the elastic force of the spring 6, completing the positioning of the handle 5. It means that at this time the handle 5 is rotated into place and the valve core is closed. Because the aperture diameter of the top groove 532 gradually becomes larger away from the side of the bottom groove 531, and the aperture diameter of the bottom groove 531 is the same as the outer diameter of the spring 6, there will be a certain gap between the gear pin 7 and the upper half of the spring 6 and the inner wall of the top groove 532, leaving a part of the left and right margins for the spring 6 and the gear pin 7. Therefore, when the handle 5 drives the spring 6 and the gear pin 7 to rotate to the abutment groove 22 on the housing 2, the gear pin 7 can instantly enter the abutment groove 22 under the action of the elastic force of the spring 6, and make a sound to prompt the user that the valve core is closed;

[0061] The inclined surface 23 is combined with the pin groove 53 so that when the handle 5 drives the gear pin 7 to rotate to the abutment groove 22, the gear pin 7 can better enter the abutment groove 22 and make a normal sound.

[0062] The valve core structure greatly improves the qualified rate of the product, reduces the risk of abnormal posture of the shift pin 7 when entering the abutment groove 22, and extends the service life of the valve core structure.

[0063] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An electric water faucet valve core structure, characterized in that: include: base; The outer shell is detachably fixedly connected to the base, and an abutment groove is provided on the inner wall; Static ceramic piece, fixed on the base; The moving ceramic piece is located on the side of the static ceramic piece away from the base; The handle is fixedly connected to the movable porcelain piece and rotatably connected to the housing. It is located on the side of the movable porcelain piece away from the static porcelain piece, and a pin groove is opened on the handle along the axial direction. The pin groove includes a bottom groove and a top groove. The aperture of the top groove is larger than the aperture of the bottom groove, and the top groove and the bottom groove are coaxial. The spring is inserted into the pin slot, and the outer diameter of the spring is the same as the hole diameter of the bottom slot; The gear pin is inserted into the pin slot, with the bottom of the side end abutting against the spring, and the top extending into the abutment slot abutting against the housing; An inner sealing ring, located between the static ceramic plate and the base; and The outer sealing ring is provided on the base and is located on the side of the base away from the static ceramic piece; The static ceramic piece and the dynamic ceramic piece are both located between the shell and the base, a portion of the handle is located between the shell and the base, and another portion of the handle passes through the shell and is located on a side of the shell away from the base.

2. The electric faucet valve core structure according to claim 1, characterized in that: The lower half of the gear pin is inserted into the spring, and the bottom of the side end of the gear pin abuts against the spring.

3. The electric faucet valve core structure according to claim 1, characterized in that: The top of the shift pin is spherical, and the shape of the abutment groove is a truncated cone-shaped groove that matches the top of the shift pin.

4. The electric faucet valve core structure according to claim 1, characterized in that: The connection between the top groove and the bottom groove is a smooth variable diameter connection curved surface.

5. The electric faucet valve core structure according to claim 1, characterized in that: The inner wall of the top groove is a smooth curved surface with a variable diameter, and the diameter of the hole of the top groove gradually increases toward the side away from the bottom groove.

6. The electric faucet valve core structure according to claim 1, characterized in that: The shell is snap-connected with the base, a buckle is provided on the base, a slot is provided on the shell, and the buckle is snap-connected in the slot.

7. The electric faucet valve core structure according to claim 1, characterized in that: An anti-rotation protrusion is provided on the base, an anti-rotation groove is provided on the static ceramic plate, and the anti-rotation protrusion is located in the anti-rotation groove.

8. The electric faucet valve core structure according to claim 1, characterized in that: The handle is provided with a rotating protrusion, the movable porcelain piece is provided with a rotating groove, and the rotating protrusion is located in the rotating groove.

9. The electric faucet valve core structure according to claim 1, characterized in that: An anti-slip groove is provided on the handle.

10. The electric faucet valve core structure according to claim 1, characterized in that: The top surface inside the shell that contacts the shift pin is a slope, and the top surface of the side end of the handle close to the slope is a plane. The distance between the plane and the slope increases with the increase of the rotation angle of the handle. When the shift pin is located in the abutment groove, the rotation angle of the handle is zero degrees, and the rotation angle gradually increases when the handle rotates toward both sides away from the shift pin.

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