Water stop structure of water inlet valve

Abstract

The utility model relates to a water stop structure of a water inlet valve, a back pressure part of a water inlet valve main body is provided with a sealing back cover, and a valve, a first hinge seat and a second hinge seat are formed on the sealing back cover; a toggle lever and a switch lever are hinged to a first hinge seat and a second hinge seat through rotating shafts of the toggle lever and the switch lever respectively to form a water stop assembly; the shifting lever is in shifting connection with the switch lever, a shifting rod is arranged on a connecting rod of the floating barrel, the shifting rod is connected in a shifting sliding seat of the shifting lever in a penetrating manner to slide, and a sealing part corresponding to the valve is arranged on the lower side of the switch lever; when the floating barrel moves up and down, the poke rod slides to enable the water stop assembly to be in linkage, then the water stop assembly closes or opens a valve on the sealing back cover, and a water stop structure of the water inlet valve is formed. The water stop switch has the advantages of simple structure, small occupied space and flexible control of the water stop switch.

Description

Technical Field

[0001] The utility model relates to a water stop structure of a water inlet valve. Background Art

[0002] In the existing toilet tank accessories, the water inlet valve installed in the water tank needs to have a longer lifting rod in order to prevent water leakage under high pressure, so as to obtain a larger lever ratio and thus a larger sealing force value. However, making the lifting rod longer will result in a larger volume of the water inlet valve, which makes the large-volume water inlet valve unable to adapt to the current toilet tank. In order to solve this problem, Chinese patent CN209723159U provides a linkage structure suitable for a water inlet valve float and a back pressure valve, in which a convex strip is arranged on the inner side of the upper end of the primary rocker, and the upper end of the secondary rocker is a strip-shaped upper arm. When the float descends, the convex strip of the primary rocker presses on the upper arm of the secondary rocker, thereby opening the back pressure valve of the water inlet valve body, so that the water inlet valve is in a water inlet state; when the float rises, the two force arms of the primary rocker just press on the convex shafts on both sides of the secondary rocker, thereby closing the back pressure valve of the water inlet valve body, so that the water inlet valve is in a water stop state. This water-stop structure utilizes the transmission coordination of a multi-stage rocker arm to obtain a larger lever ratio while greatly shortening the length of the lifting rod, thereby reducing the volume of the water inlet valve. However, its structure is still relatively complex. After a period of use, the two force arms of the first-stage rocker arm and the cams on both sides of the second-stage rocker arm are prone to jamming failures, affecting the control of the water-stop switch. Summary of the invention

[0003] The purpose of the utility model is to provide a water stop structure for a water inlet valve with a simple structure, small occupied space and flexible control of the water stop switch in view of the above-mentioned existing problems.

[0004] The purpose of the utility model is achieved in this way. A water-stop structure of a water inlet valve is provided, a sealing back cover is provided on the back pressure part of the water inlet valve body, and a valve, a first hinge seat and a second hinge seat are formed on the sealing back cover; a water-stop assembly is formed by a toggle lever and a switch lever being hinged on the first hinge seat and the second hinge seat respectively through their rotating shafts; the toggle lever is toggle-connected with the switch lever, a toggle lever is provided on the connecting rod of the float barrel, the toggle lever is inserted into the toggle slide seat of the toggle lever and slides, and a sealing part corresponding to the valve is provided on the lower side of the switch lever; when the float barrel moves up and down, the toggle rod slides to make the water-stop assembly linked, so that the water-stop assembly closes or opens the valve on the sealing back cover, thereby forming the water-stop structure of the water inlet valve.

[0005] The utility model has a convex rod and an arc-shaped shoulder formed on the toggle end of the switch lever, and a powerful arm and an upward-curved top-connecting shoulder formed on the free end of the toggle lever; when the floating barrel moves upward, the convex rod is pressed down by the powerful arm of the toggle lever, and the convex rod of the switch lever slides to press the switch lever downward to seal; when the floating barrel moves downward, the arc-shaped shoulder is pressed by the upward-curved top-connecting shoulder of the toggle lever, and the arc-shaped shoulder of the switch lever slides to make the switch lever tilt upward to open the seal.

[0006] The utility model comprises front and rear double convex rods formed at the toggled end of the switch lever and front and rear double force arms formed at the free end of the toggling lever to form a toggling balancing structure of the toggling lever and the switch lever.

[0007] The utility model adopts a sliding connection structure of a toggle lever and a switch lever. When the float bucket is raised and lowered to move the toggle lever, the toggle lever and the switch lever are slidably connected, so no jamming failure occurs. Moreover, the water stop switch is flexible to control and occupies little space.

[0008] The following embodiments are combined with the accompanying drawings to further illustrate the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the utility model in a water-influent state;

[0010] Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of the components in the water-influent state of the embodiment;

[0011] Figure 3 yes Figure 1 A schematic structural diagram of the embodiment in the water inflow state;

[0012] Figure 4 yes Figure 3 Structural schematic diagram of the water-stop assembly in the water-inflow state;

[0013] Figure 5 yes Figure 1 A schematic diagram of the three-dimensional structure of the embodiment in a water-stopping state;

[0014] Figure 6 yes Figure 1 A schematic diagram of the structure of the embodiment in a water-stopping state;

[0015] Figure 7 yes Figure 6 Schematic diagram of the structure of the water-stop assembly in the water-stop state.

[0016] In the figure, 1. water inlet valve body; 2. sealing back cover; 3. valve; 4. first hinge seat; 5. second hinge seat; 6. toggle lever; 7. switch lever; 8. connecting rod; 9. toggle rod; 10. toggle slide seat; 11. float barrel; 12. convex rod; 13. arc shoulder; 14. force arm; 15. upturned top shoulder. Implementation

[0017] Reference Figures 1 to 7 The present embodiment is a water stop structure of a water inlet valve. A sealing back cover 2 is provided on the back pressure portion of the water inlet valve body 1, and a valve 3, a first hinge seat 4 and a second hinge seat 5 are formed on the sealing back cover; a toggle lever 6 and a switch lever 7 are respectively hinged on the first hinge seat and the second hinge seat through their rotating shafts to form a water stop assembly; the toggle lever is toggle-connected with the switch lever, a toggle lever 9 is provided on the connecting rod 8 of the float barrel, the toggle lever is inserted into the toggle slide seat 10 of the toggle lever and slides, and a sealing portion corresponding to the valve is provided on the lower side of the switch lever; when the float barrel 11 moves up and down, the toggle lever slides to make the water stop assembly linked, thereby closing or opening the water stop assembly. The valve on the sealing back cover is opened to form a water-stop structure of the water inlet valve; a convex rod 12 and an arc-shaped shoulder 13 are formed at the toggle end of the switch lever, and a force arm 14 and an upturned top connecting shoulder 15 are formed at the free end of the toggle lever; when the float bucket moves upward, the convex rod is pressed down by the force arm of the toggle lever, and the convex rod of the switch lever slides to press the switch lever down to seal; when the float bucket moves downward, the upturned top connecting shoulder of the toggle lever presses the arc-shaped shoulder, and the arc-shaped shoulder of the switch lever slides to make the switch lever upturn and open the seal; the front and rear double convex rods formed at the toggle end of the switch lever and the front and rear double force arms formed at the free end of the toggle lever form a toggle lever and switch lever toggle balance structure.

[0018] The working process of the utility model is as follows: Figures 1 to 3 As shown, when the buoy descends, the toggle lever is driven by the action of the float barrel and rotates a certain angle in the clockwise direction along the first hinge seat around its rotation axis, so that the upturned top shoulder of the toggle lever presses against the arc shoulder of the switch lever and slides along the arc shoulder of the switch lever, so that the switch lever rotates a corresponding angle in the clockwise direction along the second hinge seat around its rotation axis, and a gap is generated between the sealing part of the corresponding valve arranged at the lower side of the switch lever and the valve, thereby opening the valve of the water inlet valve body and putting the water inlet valve in the water inlet state; as shown in FIG. Figure 5 and Figure 6 As shown, when the buoy rises, the toggle lever is driven by the action of the float barrel and rotates a certain angle counterclockwise around its rotation axis along the first hinge seat, the upturned top shoulder is separated from the arc-shaped shoulder of the switch lever, and the switch lever rotates a corresponding angle counterclockwise around its rotation axis along the second hinge seat, so that the force arm of the toggle lever presses down the convex rod of the switch lever, the convex rod of the switch lever slides to press the switch lever downward, and the sealing part of the corresponding valve arranged on the lower side of the switch lever is squeezed against the valve, thereby closing the valve of the water inlet valve body, so that the water inlet valve is in a water-stop state.

Claims

1. A water stop structure for a water inlet valve, wherein a sealing back cover (2) is provided at a back pressure portion of a water inlet valve body (1), and a valve (3), a first hinge seat (4) and a second hinge seat (5) are formed on the sealing back cover; the characteristics are as follows: A water stop assembly is formed by a toggle lever (6) and a switch lever (7) being hinged to a first hinge seat and a second hinge seat respectively through their rotation axes; the toggle lever is slidably connected to the switch lever, a toggle lever (9) is provided on a connecting rod (8) of a floating barrel, the toggle lever slides in a toggle slide seat (10) of the toggle lever, and a sealing portion corresponding to the valve is provided on the lower side of the switch lever; when the floating barrel (11) moves up and down, the toggle lever slides to make the water stop assembly move in conjunction, thereby making the water stop assembly close or open the valve on the sealing back cover, thereby forming a water stop structure of the water inlet valve.

2. The water stop structure of the water inlet valve according to claim 1, characterized in that: A convex rod (12) and an arcuate shoulder (13) are formed at the toggle end of the switch lever, and a powerful arm (14) and an upward-curved top-connecting shoulder (15) are formed at the free end of the toggle lever; when the float barrel moves upward, the powerful arm of the toggle lever presses down the convex rod, and the convex rod of the switch lever slides to press the switch lever downward to seal; when the float barrel moves downward, the upward-curved top-connecting shoulder of the toggle lever presses the arcuate shoulder, and the arcuate shoulder of the switch lever slides to cause the switch lever to tilt upward to open the seal.

3. The water stop structure of the water inlet valve according to claim 2, characterized in that: The toggle lever and the switch lever toggle balancing structure is formed by the front and rear double convex rods formed at the toggle end of the switch lever and the front and rear double force arms formed at the free end of the toggle lever.

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