CN220668465U - Valve core - Google Patents

Abstract

The utility model discloses a valve core, which belongs to the field of valves, and comprises a shell, a rotating handle, a movable valve block, a fixed valve block, a spring and a positioning pin, wherein a positioning groove is formed in the inner wall of the shell; the notch edge of constant head tank is to keeping away from the direction of constant head tank is followed the circumference extension of casing has a driving surface, the locating pin can the butt in the driving surface and follow the driving surface slides, follows the locating pin rotates to be close to in the direction of rotation of constant head tank, the locating pin with the butt department of driving surface with the distance of the rotation axis of twist grip reduces gradually. The utility model has the advantage of obvious prompt tone when the valve core rotates in place.

Description

Valve core

Technical Field

The utility model relates to the field of valves, in particular to a valve core.

Background

The valve core is a device in the valve for adjusting the valve. The valve core generally comprises a shell, a movable valve block, a fixed valve block and a rotating handle, wherein the rotating handle is connected with the movable valve block, and the movable valve block is driven to rotate relative to the fixed valve block by rotating the rotating handle, so that a flow passage between the movable valve block and the fixed valve block is changed, and the purpose of adjusting the opening of the valve is realized.

In some scenarios, a portion of the valve throughput may set different gear positions. Such as a water mixing valve having a cold water gear, a hot water gear, a water mixing gear, etc. The valve is generally provided with a pin hole on a rotating handle of the valve core along the radial direction of the rotating handle, a positioning pin connected with a spring is arranged in the pin hole, and a positioning groove is arranged on the shell. When the gear is adjusted, the rotating handle rotates, and the spring drives the positioning pin to abut against the shell and slide relative to the inner wall of the shell. When the valve core rotates to the setting gear, the positioning pin rotates to be opposite to the positioning groove, and at the moment, the spring drives the positioning pin to spring into the positioning groove and impact the inner wall of the positioning groove to make a sound, so that a user is reminded of adjusting the valve to the setting gear.

The current spring is usually formed by shearing after coiling, so that the end part of the spring is often uneven, and therefore the spring and the locating pin incline towards one side of the edge of the pin hole, which is close to the locating groove, and lubricating oil is usually coated between the rotating handle and the shell, so that the locating pin is difficult to incline towards the edge of the pin hole, which is far away from the locating groove, by virtue of friction force during rotation, and the prompting sound generated by the impact of the locating pin on the locating groove in the process of bouncing the locating pin into the locating groove is not obvious.

Disclosure of Invention

The utility model aims to provide a valve core, which can overcome the defect that the impact sound of a positioning pin is not obvious due to the defect of a spring in the prior art.

The technical aim of the utility model is realized by the following technical scheme:

the utility model provides a valve core, which comprises a shell, a rotating handle, a moving valve block, a fixed valve block, a spring and a locating pin, wherein the rotating handle, the moving valve block and the fixed valve block are all arranged in the shell;

the inner wall of the shell is provided with a positioning groove, the rotating handle is radially provided with a pin hole, the spring is accommodated in the pin hole, and the positioning pin is arranged at one end of the spring, which is far away from the bottom wall of the pin hole, and is abutted against the inner wall of the shell;

the notch edge of constant head tank is to keeping away from the direction of constant head tank is followed the circumference extension of casing has a driving surface, the locating pin can the butt in the driving surface and follow the driving surface slides, follows the locating pin rotates to be close to in the direction of rotation of constant head tank, the locating pin with the butt department of driving surface with the distance of the rotation axis of twist grip reduces gradually.

In the scheme, the movable valve block is driven to rotate relative to the fixed valve block by rotating the handle so as to form different flow paths, thereby changing the flow state of fluid passing through the valve core; the spring is held in the pinhole and drive locating pin butt in the inner wall of casing, and the in-process that the handle drove the valve piece and rotate to setting for the gear is rotated to the movable valve piece, and spring and locating pin rotate along with the handle until the locating pin aligns the constant head tank, and then spring drive locating pin bullet goes into the constant head tank in, and the locating pin striking constant head tank's inner wall sends the suggestion sound.

The notch edge of the positioning groove extends to a direction far away from the positioning groove to form a driving surface, and before the positioning pin is sprung into the positioning groove, the positioning pin is abutted to the driving surface and slides relative to the driving surface. The distance from the abutting part of the driving surface and the locating pin to the rotation central axis of the rotating handle is gradually reduced, the supporting force of the driving surface to the locating pin is perpendicular to the driving surface, the supporting force and the elastic force of the spring applied to the locating pin along the axial direction of the spring are not on the same straight line, the resultant force of the supporting force and the elastic force faces the direction away from the locating groove, and therefore the spring deflects towards the direction away from the locating groove. Therefore, the prompt tone generated by the impact when the locating pin bounces into the locating groove is obvious.

Preferably, the driving surface is an arc surface, and the driving surface is recessed towards a direction away from the rotating handle.

Preferably, the curvature of the driving surface gradually increases along the rotation direction in which the positioning pin rotates to be close to the positioning groove.

Preferably, the driving surface is arranged at the notch of two opposite sides of the positioning groove.

Preferably, a limit groove is formed in one of the inner wall of the shell and the peripheral side of the rotating handle, a limit block is arranged on the other one of the inner wall of the shell and the peripheral side of the rotating handle, the limit groove extends along the circumferential direction of the shell, and the limit block is limited in the limit groove and can slide along the extending direction of the limit groove.

Preferably, the limiting groove is formed in the inner wall of the shell, and the limiting block is fixed to the periphery of the rotating handle.

Preferably, the limiting block is located in a plane of the positioning groove along a radial direction of the shell, and the positioning groove is arranged at a part of the inner wall of the shell, which is located outside the limiting groove, and is opposite to the limiting groove.

Preferably, the driving surface extends smoothly from the notch of the limit groove to the notch of the locating groove.

Preferably, the positioning pin comprises a pin head and a pin column, the pin head is connected to one side of the pin column, which faces the shell, the diameter of the pin head is larger than that of the pin column, the pin column is inserted into the spring, and the end part of the spring is abutted to one side, close to the pin column, of the pin head.

Preferably, the fixed valve block is fixed in the casing, a plurality of overflow holes are formed in the fixed valve block, the movable valve block is attached to the fixed valve block, an overflow cavity is formed in one side, facing the fixed valve block, of the movable valve block, and the overflow cavity is communicated with different overflow holes along with rotation of the movable valve block.

In summary, the utility model has the following beneficial effects:

1. according to the utility model, the inner wall of the shell is improved, the edge of the notch of the positioning groove is extended to be provided with the driving surface, and the positioning pin slides along the driving surface and springs into the positioning groove in the rotating process of the rotating handle.

2. The driving surface is an arc surface, and the curvature of the driving surface gradually increases along the rotation direction of the positioning pin, which is close to the positioning groove, so that the positioning pin is more stable and reliable when sliding on the driving surface.

3. According to the utility model, the limiting groove limits the limiting block, so that the shell limits the rotation angle of the rotary handle, and the rotation of the valve core is controlled conveniently, so that the circulation condition of fluid is controlled.

Drawings

Fig. 1 is a schematic front view of a valve core according to an embodiment of the present utility model.

Fig. 2 is an exploded view of a valve cartridge according to an embodiment of the present utility model.

Fig. 3 is a schematic vertical sectional structure of a valve element according to an embodiment of the present utility model.

Fig. 4 is a schematic horizontal sectional structure of a valve core according to an embodiment of the present utility model.

Fig. 5 is a schematic view of a spring, a positioning pin and a housing in the related art.

Fig. 6 is a second schematic structural view of a spring, a positioning pin and a housing in the related art.

Fig. 7 is a schematic view of the structure of the middle spring, the positioning pin and the housing of the present utility model.

Fig. 8 is a schematic structural view of a valve block according to an embodiment of the present utility model.

FIG. 9 is a schematic diagram of a valve block according to an embodiment of the present utility model.

Fig. 10 is a schematic view of the valve core according to an embodiment of the present utility model rotated in a clockwise direction.

Fig. 11 is a schematic view showing the structure of the fixed valve block and the movable valve block when rotated in the clockwise direction according to an embodiment of the present utility model.

In the figure:

1000. a valve core; 100. a housing; 110. a positioning groove; 120. a driving surface; 130. a limit groove; 140. a boss; 200. rotating the handle; 210. a pin hole; 220. a limiting block; 300. A valve block; 310. a flow-through cavity; 400. a valve fixing block; 410. a first overflow aperture; 420. a second overflow aperture; 430. a third flow aperture; 500. a connection part; 600. a spring; 700. a positioning pin; 710. a pin head; 720. a pin; f1, supporting force; f2, the axial elasticity of the spring; f3, elastic force.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

The utility model discloses a valve core 1000, referring to fig. 1 and 2, the valve core 1000 comprises a housing 100, a rotary handle 200, a movable valve block 300, a fixed valve block 400, a connecting part 500, a spring 600 and a positioning pin 700. The rotating handle 200, the valve moving block 300 and the valve fixing block 400 are all disposed in the housing 100, and a portion of the rotating handle 200 extends out of the housing 100 to apply an acting force to rotate the same. The connection part 500 is fixed to the fixed valve block 400 for mounting the valve cartridge 1000. The movable valve block 300 is connected to the rotary handle 200 and is rotatable with respect to the fixed valve block 400 to form different flow paths.

Wherein the housing 100 is a cylindrical member and the twist grip 200 is a cylindrical member, thereby facilitating the rotation of the twist grip 200 relative to the housing 100.

Referring to fig. 2 to 4, the inner wall of the housing 100 is provided with a positioning groove 110, the rotating handle 200 is radially provided with a pin hole 210, and the spring 600 is accommodated in the pin hole 210. The positioning pin 700 is disposed at an end of the spring 600 away from the bottom wall of the pin hole 210 and abuts against the inner wall of the housing 100. In the process of rotating the handle 200 to drive the valve block 300 to rotate to the set gear, the spring 600 and the positioning pin 700 rotate along with the handle 200. When the rotary handle 200 is rotated until the valve core 1000 is in the set gear, the positioning pin 700 is aligned with the positioning groove 110, the spring 600 drives the positioning pin 700 to spring into the positioning groove 110, and the positioning pin 700 impacts the inner wall of the positioning groove 110 to give out a prompt tone.

The state of the flow path of certain fluid when being conducted can be set as the setting gear according to the type of the valve.

Referring to fig. 5, in the related art, an inner circumferential side of the housing 100 is a circumferential surface having a constant curvature, and the housing 100 is coaxially disposed with the rotary handle 200. Because of the uneven end portion of the spring 600, when the spring 600 is placed in the pin hole 210, there is a case where the spring 600 and the positioning pin 700 are inclined toward a direction approaching the positioning groove 110 in the rotation direction of the rotation handle 200. At this time, the supporting force F1 of the inner wall of the housing 100 to the positioning pin 700 is directed into the housing 100 in the radial direction of the housing 100 and the rotation handle 200, and the resultant force of the elastic force F2 of the spring 600 in the axial direction of the spring 600 and the supporting force F1 of the inner wall of the housing 100 to the positioning pin 700 is directed in the direction approaching the positioning groove 110, which makes the spring 600 itself undergo bending deformation with respect to the axial direction thereof in addition to the elastic force F2 in the axial direction of the spring 600 to provide another elastic force F3 in the direction away from the positioning groove 110, so that the three forces are balanced.

As the rotating handle 200 rotates to rotate the positioning pin 700 in a direction approaching to the positioning groove 110, when the positioning pin 700 is aligned to the positioning groove 110, the supporting force F1 of the inner wall of the housing 100 to the positioning pin 700 disappears, the spring 600 still exists due to deformation of the spring 600, the elastic force F2 and the elastic force F3 of the spring 600 still exist, wherein the elastic force F2 drives the positioning pin 700 to spring into the positioning groove 110, and the direction of the elastic force F3 is opposite to the rotating speed direction of the positioning pin 700, so that the elastic force F3 plays a blocking role on the positioning pin 700, and the sound loudness when the positioning pin 700 impacts the positioning groove 110 is reduced.

Referring to fig. 6, when the spring 600 and the positioning pin 700 are inclined in a direction away from the positioning groove 110, a resultant force of the supporting force F1 of the inner wall of the housing 100 to the positioning pin 700 and the elastic force F2 of the axial direction of the spring 600 is directed in a direction away from the positioning groove 110, and at this time, the spring 600 is biased to deform with respect to the axial direction thereof to provide another elastic force F3, and the elastic force F3 is directed in a direction approaching the positioning groove 110, so that the supporting force F1, the elastic force F2 and the elastic force F3 are balanced.

As the rotating handle 200 rotates to rotate the positioning pin 700 in a direction approaching to the positioning groove 110, when the positioning pin 700 is aligned to the positioning groove 110, the supporting force F1 of the inner wall of the housing 100 to the positioning pin 700 disappears, the spring 600 still exists due to deformation of the spring 600, the elastic force F2 and the elastic force F3 of the spring 600 still exist, wherein the elastic force F2 drives the positioning pin 700 to spring into the positioning groove 110, the direction of the elastic force F3 is the same as the rotating speed direction of the positioning pin 700, so that the elastic force F3 has an accelerating effect on the positioning pin 700, and the sound loudness when the positioning pin 700 impacts the positioning groove 110 is improved.

The utility model aims to enable the positioning pin 700 and the spring 600 to always keep inclined towards the direction away from the positioning groove 110 along the rotation direction of the rotating handle 200, so that the sound when the positioning pin 700 impacts the positioning groove 110 is obvious.

Referring to fig. 4, in the present embodiment, a driving surface 120 extends along the circumferential direction of the housing 100 along the slot edge of the positioning slot 110 in a direction away from the positioning slot 110. So that the positioning pin 700 can abut against the driving surface 120 and slide along the driving surface 120 during the process of sliding the positioning pin 700 into the positioning groove 110. And in the rotation direction in which the positioning pin 700 rotates to approach the positioning groove 110, the distance between the contact point of the positioning pin 700 and the driving surface 120 and the rotation central axis of the rotation handle 200 is gradually reduced.

Referring to fig. 4 and 7, before the positioning pin 700 is sprung into the positioning groove 110, the positioning pin 700 abuts against the driving surface 120 and slides with respect to the driving surface 120. The distance from the contact point of the driving surface 120 and the positioning pin 700 to the rotation central axis of the rotation handle 200 gradually decreases, the supporting force F1 of the driving surface 120 to the positioning pin 700 is perpendicular to the driving surface 120, so that the supporting force F1 and the elastic force F2 of the spring 600 applied to the positioning pin 700 along the axial direction of the spring 600 are not on the same straight line, and the resultant force F of the supporting force F1 and the elastic force F2 is directed away from the positioning groove 110, so that the spring 600 is biased toward the direction away from the positioning groove 110. Thereby making the alert sound of the impact more noticeable when the dowel 700 springs into the dowel slot 110.

In this embodiment, the driving surface 120 is an arc surface, and the driving surface 120 is recessed toward a direction away from the rotating handle 200. Therefore, when the positioning pin 700 rotates along with the rotating handle 200, the positioning pin 700 slides smoothly along the driving surface 120, and the arc-shaped driving surface 120 is also convenient to form.

In addition, in other embodiments, the driving surface 120 may be a flat surface.

In this embodiment, the curvature of the driving surface 120 gradually increases along the rotation direction of the positioning pin 700 toward the positioning groove 110. This causes the distance between the driving surface 120 and the circumferential side of the rotation handle 200 to gradually decrease in the direction of rotating closer to the positioning groove 110.

Referring to fig. 4, in this embodiment, the driving surface 120 is disposed at notches on two opposite sides of the positioning slot 110. Therefore, the rotating handle 200 can keep the deflection of the positioning pin 700 and the spring 600 away from the positioning groove 110 along the rotating direction of the rotating handle 200 no matter in the process of rotating clockwise in the drawing to cause the positioning pin 700 to spring into the positioning groove 110 or in the process of rotating anticlockwise in the drawing to cause the positioning pin 700 to spring into the positioning groove 110, so that the prompt sound is obvious when the valve core 1000 rotates forward to reach the set gear and rotates backward to reach the set gear.

In this embodiment, a limiting groove 130 is disposed on the inner wall of the housing 100, and a limiting block 220 is disposed on the peripheral side of the rotating handle 200. The limiting groove 130 extends along the circumferential direction of the housing 100, and the limiting block 220 is limited in the limiting groove 130 and can slide along the extending direction of the limiting groove 130. The limiting groove 130 limits the limiting block 220, so that the housing 100 limits the rotation angle of the rotary handle 200, and the rotary handle 200 is prevented from rotating excessively, so that the rotation of the valve core 1000 is controlled conveniently, and the circulation condition of fluid is controlled.

In addition, in other embodiments, the limiting groove 130 may be formed on the rotating handle 200, and the corresponding limiting block 220 is disposed on the inner wall of the housing 100.

In this embodiment, the limiting block 220 is located in a plane of the positioning slot 110 along the radial direction of the housing 100, and the limiting slot 130 is correspondingly located in the plane of the positioning slot 110 along the radial direction of the housing 100. This arrangement advantageously saves axial length of twist grip 200.

In addition, in other embodiments, the limiting block 220 may be disposed in a different plane than the positioning slot 110, such as above or below the positioning slot 110, and the corresponding limiting slot 130 is disposed on the housing 100 at a position corresponding to the limiting block 220.

In this embodiment, the limiting groove 130 is in a circular arc shape. Due to the opening of the limiting groove 130, in the extending direction of the limiting groove 130, a part of the inner wall of the housing 100 located outside the limiting groove 130 protrudes towards the inner side of the housing 100 along the radial direction of the housing 100 relative to the bottom wall of the limiting groove 130 to form a circular arc-shaped protruding portion 140. The end surfaces of the opposite ends along the extending direction of the protruding portion 140 are opposite side walls of the limiting groove 130.

The positioning groove 110 is disposed at a middle portion of the protruding portion 140 along the extending direction thereof, and is opposite to the middle portion of the limiting groove 130. The stopper 220 is disposed on the same diameter of the rotary handle 200 opposite to the pin hole 210.

The stopper 220 is an arc-shaped block having the same curvature as the stopper groove 130. Along the extending direction of the limiting groove 130, two opposite sides of the limiting block 220 are respectively in one-to-one correspondence with two opposite side walls of the limiting groove 130. The difference between the angle of the central angle of the circular arc where the limiting groove 130 is located and the angle of the central angle of the circular arc where the limiting block 220 is located is not greater than the angle of the central angle of the circular arc where the protruding portion 140 is located, so that when the limiting groove 130 limits clockwise rotation and anticlockwise rotation of the limiting block 220, when one side of the limiting block 220 abuts against the side wall of the limiting groove 130, the positioning pin 700 always abuts against the surface of the protruding portion 140 and cannot slide into the limiting groove 130.

In this embodiment, the driving surfaces 120 extend smoothly from the notch of the limiting groove 130 to the notch of the positioning groove 110, so that the two driving surfaces 120 cover the inner sides of the protruding portions 140. Thus, the positioning pin 700 slides along the surface of the protrusion 140 more stably, and the positioning pin 700 and the spring 600 are always kept inclined in a direction away from the positioning groove 110.

In other embodiments, the driving surface 120 may be disposed only at a portion of the protrusion 140 near the limiting groove 130.

In this embodiment, the positioning pin 700 includes a pin head 710 and a pin post 720, the pin head 710 is connected to a side of the pin post 720 facing the housing 100, and a diameter of the pin head 710 is larger than a diameter of the pin post 720. The pin 720 is inserted into the spring 600, and an end of the spring 600 abuts against one side of the pin head 710, which is close to the pin 720. The side of the pin head 710 away from the pin 720 is an arc surface, so that friction is small when the pin head 710 abuts against the inner wall of the housing 100 and slides.

Referring to fig. 2, 3, 8 and 9, in this embodiment, the valve fixing block 400 is fixed in the housing 100. Wherein, the valve block 400 is provided with a plurality of overflow holes. The movable valve block 300 is attached to the fixed valve block 400, and an overflow cavity 310 is disposed on a side of the movable valve block 300 facing the fixed valve block 400, and the overflow cavity 310 is communicated with different overflow holes along with rotation of the movable valve block 300. Thus, the movable valve block 300 rotates with the rotating handle 200, so that the through-flow chamber 310 communicates with different through-flow holes, and the effect of changing the flow path of the fluid is achieved.

Specifically, in this embodiment, three flow holes are distributed on the fixed valve block 400 at intervals along the circumferential direction of the fixed valve block 400, and are respectively defined as a first flow hole 410, a second flow hole 420 and a third flow hole 430. The length of the flow chamber 310 is greater than the distance between two adjacent flow holes.

Referring to fig. 10 and 11, initially, the positioning pin 700 abuts against one end of the boss 140, and the flow chamber 310 is simultaneously communicated with the first flow hole 410 and the second flow hole 420. When the rotary valve core 1000 rotates clockwise so that the valve is in the set gear, the positioning pin 700 is sprung into the positioning groove 110, and the through-flow chamber 310 communicates with the first through-flow hole 410 and the third through-flow hole 430 at the same time. When the rotary valve core 1000 continues to rotate clockwise such that the positioning pin 700 rotates from the positioning groove 110 to the other end of the boss 140, the through-flow chamber 310 communicates with the second through-flow hole 420 and the third through-flow hole 430.

According to this feature, different fluid lines may be connected to the first, second and third flow holes 410, 420 and 430, respectively, to achieve the purpose of adjusting the fluid flow path. If the first, second and third overflow holes 410, 420 and 430 are connected to the cold water pipe, the hot water pipe and the water outlet pipe, respectively, the water outlet and mixing of cold and hot water can be realized, respectively.

Of course, the fixed valve block 400 and the movable valve block 300 are not limited to this setting method, and particularly, the gear may be set according to the purpose of the valve, and the setting position of the positioning groove 110 may be adaptively changed.

The foregoing description is only of the preferred embodiments of the utility model, and all changes and modifications that come within the meaning and range of equivalency of the structures, features and principles of the utility model are therefore intended to be embraced therein.

Claims (10)

1. The valve core comprises a shell, a rotating handle, a moving valve block, a fixed valve block, a spring and a locating pin, wherein the rotating handle, the moving valve block and the fixed valve block are arranged in the shell, part of the rotating handle extends out of the shell, and the moving valve block is connected with the rotating handle and can rotate relative to the fixed valve block to form different flow paths; the method is characterized in that:

the inner wall of the shell is provided with a positioning groove, the rotating handle is radially provided with a pin hole, the spring is accommodated in the pin hole, and the positioning pin is arranged at one end of the spring, which is far away from the bottom wall of the pin hole, and is abutted against the inner wall of the shell;

the notch edge of constant head tank is to keeping away from the direction of constant head tank is followed the circumference extension of casing has a driving surface, the locating pin can the butt in the driving surface and follow the driving surface slides, follows the locating pin rotates to be close to in the direction of rotation of constant head tank, the locating pin with the butt department of driving surface with the distance of the rotation axis of twist grip reduces gradually.

2. The valve cartridge of claim 1, wherein the actuating surface is an arcuate surface, the actuating surface being concave in a direction away from the rotatable handle.

3. The valve cartridge according to claim 2, wherein the curvature of the driving surface increases gradually in a rotational direction in which the detent pin rotates closer to the detent groove.

4. A valve cartridge according to claim 3, wherein the drive faces are provided at notches on opposite sides of the detent.

5. The valve cartridge according to claim 1, wherein a stopper is provided on one of an inner wall of the housing and a peripheral side of the rotary handle, a stopper is provided on the other of the inner wall of the housing and the peripheral side of the rotary handle, the stopper extends in a circumferential direction of the housing, and the stopper is retained in the stopper and is slidable in an extending direction of the stopper.

6. The valve core according to claim 5, wherein the limit groove is formed in an inner wall of the housing, and the limit block is fixed to a peripheral side of the rotating handle.

7. The valve cartridge of claim 6, wherein the stopper is located in a plane of the positioning groove along a radial direction of the housing, and the positioning groove is disposed on a portion of an inner wall of the housing located outside the positioning groove and opposite to the positioning groove.

8. The valve cartridge of claim 7, wherein the drive surface extends smoothly from the notch of the detent groove to the notch of the detent groove.

9. The valve cartridge according to claim 1, wherein the positioning pin includes a pin head and a pin post, the pin head is connected to a side of the pin post facing the housing, the pin head has a larger diameter than the pin post, the pin post is inserted into the spring, and an end portion of the spring abuts against a side of the pin head adjacent to the pin post.

10. The valve core according to claim 1, wherein the fixed valve block is fixed in the housing, a plurality of overflow holes are formed in the fixed valve block, the movable valve block is attached to the fixed valve block, an overflow cavity is formed in one side of the movable valve block, facing the fixed valve block, and the overflow cavity is communicated with different overflow holes along with rotation of the movable valve block.