External silent valve rod gear structure for faucet valve element

Abstract

An external silent valve rod gear structure for a faucet valve element comprises a valve shell and a valve rod, the valve rod can swing relative to the valve shell, and the external silent valve rod gear structure is characterized by further comprising an elastic gear part, the elastic gear part is located on one side of the valve rod and exposed out of the upper end of the valve shell, a protruding rib protruding towards the valve rod is arranged on the elastic gear part, and the protruding rib is arranged on the valve shell. A limiting part protruding laterally is arranged on the side wall of the valve rod, and swing of the valve rod can enable the protruding rib to slide along the limiting part so as to promote the elastic blocking part to deform. The valve rod gear structure has the advantages that the elastic gear part and the limiting part are assembled while the valve shell and the valve rod are assembled, so that the valve rod gear structure is relatively simple and convenient to assemble; moreover, the convex rib of the elastic gear part slides along the limiting part to promote the elastic gear part to be formed and deformed, so that the convex rib generates elastic force, the elastic force acts on the limiting part to generate friction force, certain damping is further generated, and therefore, the elastic gear part is matched with the limiting part without making a sound.

Description

Technical Field

[0001] The utility model relates to a faucet valve core, in particular to an external silent valve stem shifting structure for the faucet valve core. Background Art

[0002] Currently, faucet valve cores on the market can be divided into two main categories based on their functions: mixing valve cores, which control the opening and closing of the cold and hot water inlets, regulating water temperature and volume; and diverter valve cores, which control the direction of water outflow. Due to the functional limitations of these two types of valve cores, in practice, they are often combined to achieve water diversion, temperature, and flow control. However, the simultaneous integration of both types of valve cores within the faucet body results in a complex, bulky, and difficult to manufacture faucet body.

[0003] Therefore, in the prior art, as shown in the Chinese utility model "Valve Stem Limiting Protection Structure of Faucet Valve Core" with patent number ZL202422468012.9, the faucet valve core includes a valve housing, a valve stem, a dial, a movable valve plate and a fixed valve plate. The lower end of the valve stem is connected to the dial, and the dial is fixed above the movable valve plate. The movable valve plate is driven to rotate by the rotation of the valve stem to realize the water mixing function; and the middle part of the valve stem is rotatably connected to the valve housing through a pin shaft to realize the swing of the valve stem, and the water diversion function is realized by the swing of the valve stem, and when the valve stem is in the middle position of 0 degrees, the valve core is in a closed state.

[0004] Although the aforementioned faucet valve core combines the water mixing valve core and the water diversion valve core into one, to ensure clear swinging positions of the valve stem, the faucet valve core also has a spring and a bullet on the valve stem, and a plurality of gear slots corresponding to the bullets on the valve housing. This spring, bullet, and gear slot assembly is not only complex, but also produces a certain noise during the swinging of the valve stem to indicate the gear position. However, in actual use, the faucet valve core may need to be non-disruptive to the surrounding environment, so that users can rest or work without interference. Therefore, further improvements to the faucet valve core are needed. Summary of the Invention

[0005] The technical problem to be solved by the utility model is to provide an external silent valve stem shifting structure for a faucet valve core with a reasonable structure and easy assembly in response to the above-mentioned existing technical status.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: the faucet valve core uses an external silent valve stem shifting structure, which includes a valve housing and a valve stem, and the valve stem can swing relative to the valve housing. It is characterized in that it also includes an elastic shifting portion, which is located on one side of the valve stem and exposed at the upper end of the valve housing. The elastic shifting portion is provided with a convex rib protruding toward the valve stem, and a side convex limiting portion is provided on the side wall of the valve stem. The swing of the valve stem can cause the convex rib to slide along the limiting portion, thereby causing the elastic shifting portion to deform.

[0007] As the first state of the valve stem shift structure, preferably, when the rib is offset from the stop portion, the valve stem is in the first position, i.e., the 0-degree intermediate position, and the faucet valve core is in the closed state. When the rib is offset from the stop portion, the elastic stop portion does not deform, the rib exerts no force on the valve stem, the valve stem is in the 0-degree intermediate position, and the faucet valve core is in the closed state.

[0008] As the second state of the valve stem shift structure, preferably, one side of the stop portion is provided with an inclined surface. The swinging of the valve stem causes the rib to slide along the inclined surface, thereby causing the elastic stop portion to deform. That is, when the valve stem changes from the first position to the second position, the water flowing out of the faucet valve core is in a low-flow state. The sliding of the rib along the inclined surface causes the elastic stop portion to deform to a certain extent, causing the elastic force generated by the rib to act on the inclined surface, resulting in friction between the rib and the inclined surface, thereby forming a certain amount of damping. At this time, the valve stem changes to the second position, and the water flowing out of the faucet valve core is in a low-flow state.

[0009] As the third state of the valve stem shift structure, the stop portion is preferably a planar wall portion. The swinging of the valve stem causes the rib to slide along the inclined surface to the wall portion of the stop portion, shifting the valve stem from the second position to the third position. The water flowing out of the faucet valve core is in a high-flow state. When the rib slides along the inclined surface to the wall portion of the stop portion, the deformation of the elastic stop portion is greater than that in the second position, resulting in a greater elastic force generated by the rib. This elastic force acts on the wall portion of the stop portion, generating greater friction between the rib and the wall portion, thereby creating greater damping. At this point, the valve stem is in the third position, and the water flowing out of the faucet valve core is in a high-flow state.

[0010] In order to better cooperate with the rib and the inclined surface, preferably, the front end of the rib is sharp-angled, and the inclined surface matches the sharp angle of the front end of the rib. The sharp angle of the front end of the rib matches the inclined surface, which can make the inclined surface slide more smoothly relative to the rib, making it easier for the user to swing the valve stem during use.

[0011] To enhance the elasticity of the rib, the elastic stop portion is preferably provided with a notch located below the rib. The notch provides a certain amount of deformation space for the elastic stop portion, so that when the rib slides along the inclined surface and the stop portion, the rib can move backwards due to elasticity, thereby causing the elastic stop portion to deform.

[0012] As a solution for a faucet valve core, preferably, a rotor capable of rotating relative to the valve housing is provided within the valve housing, the valve stem is inserted into the rotor of the valve housing, and the upper end of the valve stem is exposed outside the valve housing and the rotor. The middle portion of the valve stem is rotatably connected to the rotor via a pin to enable the valve stem to swing relative to the rotor and the valve housing. The upper end of the rotor extends upward to form the elastic stop portion, which is provided above one end of the pin. By providing the rotor, the faucet valve core can both rotate to achieve the water mixing function and swing to achieve the water diversion function. This valve stem stop structure can also be applied to this multifunctional faucet valve core.

[0013] Compared with the prior art, the advantages of the present invention are: the valve stem shifting structure includes an elastic shifting portion and a limiting portion, the elastic shifting portion is arranged on the valve housing or the rotor, and the limiting portion is arranged on the valve stem, and the elastic shifting portion and the limiting portion are assembled at the same time as the valve housing and the valve stem. Therefore, the assembly of the valve stem shifting structure is relatively simple, thereby improving the production efficiency of the faucet valve core; and the convex rib of the elastic shifting portion sliding along the limiting portion will prompt the elastic shifting portion to be formed, and the deformation will cause the convex rib to generate elastic force, and the elastic force acts on the limiting portion to generate friction, thereby generating a certain amount of damping, which plays a role of shifting. Therefore, the cooperation between the elastic shifting portion and the limiting portion will not make any sound, and the valve stem shifting structure is a silent structure, so that the faucet valve core can better adapt to the needs of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of the valve stem in the first position in an embodiment of the present utility model;

[0015] Figure 2 This is an exploded schematic diagram of the valve stem and rotor in an embodiment of the present utility model;

[0016] Figure 3 This is a schematic structural diagram of the rotor in an embodiment of the present utility model;

[0017] Figure 4 This is a cross-sectional view of the valve stem in the first position in an embodiment of the present utility model;

[0018] Figure 5 This is a structural schematic diagram of the valve stem in the second position in an embodiment of the present utility model;

[0019] Figure 6 This is a structural schematic diagram of the valve stem in the third position in an embodiment of the present utility model. DETAILED DESCRIPTION

[0020] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0021] like Figures 1 to 6 Shown is the best embodiment of the present utility model.

[0022] like Figure 1 As shown, the external silent valve stem shift structure for the faucet valve core of this embodiment includes a valve housing 1 and a valve stem 2. A rotor 4 that can rotate relative to the valve housing 1 is provided in the valve housing 1. The valve stem 2 is inserted into the rotor 4 of the valve housing 1 and the upper end of the valve stem 2 is exposed to the valve housing 1 and the rotor 4. The middle part of the valve stem 2 is rotatably connected to the rotor 4 via a pin to achieve the swing of the valve stem 2 relative to the rotor 4 and the valve housing 1; and a dial, a movable valve plate, and a fixed valve plate are also provided in the valve housing 1 (not shown in the figure). The lower end of the valve stem 2 is connected to the dial, and the dial is fixedly connected to the movable valve disc. Rotating the valve stem 2 can drive the rotor 4 and the dial to rotate together, and the dial will drive the movable valve disc to rotate. The fixed valve disc and the movable valve disc cooperate to adjust the mixing ratio of hot water and cold water, and then adjust the water temperature of the faucet valve core; swinging the valve stem 2 can also make the valve stem 2, the dial, and the movable valve disc swing relative to the valve housing 1, the rotor 4, and the fixed valve disc, thereby adjusting the opening and closing of the faucet valve core and the water output.

[0023] like Figures 1 to 6 As shown, the upper end of the rotor 4 of this embodiment extends upward to form an elastic blocking portion 3, which is arranged above one end of the pin shaft. The elastic blocking portion 3 is located on one side of the valve stem 2 and exposed at the upper end of the valve housing 1. The elastic blocking portion 3 is provided with a rib 31 protruding toward the valve stem 2 and a notch 32 located below the rib 31. The front end of the rib 31 is pointed, and a side convex limiting portion 21 is provided on the side wall of the valve stem 2. The limiting portion 21 is a wall portion with a plane, and an inclined surface 22 is provided on one side of the limiting portion 21. The inclined surface 22 matches the pointed shape of the front end of the rib 31. The swing of the valve stem 2 can cause the rib 31 to slide along the inclined surface 22 and the limiting portion 21, thereby causing the elastic blocking portion 3 to deform.

[0024] The workflow of this embodiment is:

[0025] A. Figure 1 As shown, when the valve stem 2 is in the first position, i.e., the middle position of 0 degrees, the faucet valve core is in a closed state, and the rib 31 is staggered from the limiting portion 21 and the inclined surface 22;

[0026] B. Figure 5 As shown, the valve stem 2 swings from the first position to the second position. The swing of the valve stem 2 causes the rib 31 to slide along the inclined surface 22, thereby causing the elastic stop portion 3 to deform. The water flowing out of the faucet valve core is in a low flow state.

[0027] C. Figure 6 As shown, the valve stem 2 continues to swing from the second position to the third position. The swing of the valve stem 2 causes the rib 31 to slide along the inclined surface 22 to the wall of the limiting portion 21, causing the elastic blocking portion 3 to deform, and the water flowing out of the faucet valve core is in a large flow state.

Claims

1. An external silent valve stem shifting structure for a faucet valve core, comprising a valve housing (1) and a valve stem (2), wherein the valve stem (2) is capable of swinging relative to the valve housing (1), and is characterized in that: The valve stem (2) further comprises an elastic blocking portion (3), the elastic blocking portion (3) being located on one side of the valve stem (2) and exposed at the upper end of the valve housing (1), the elastic blocking portion (3) being provided with a convex rib (31) protruding toward the valve stem (2), and a side convex limiting portion (21) being provided on the side wall of the valve stem (2), and the swinging of the valve stem (2) can cause the convex rib (31) to slide along the limiting portion (21) and thereby cause the elastic blocking portion (3) to deform.

2. The external silent valve stem shift structure for a faucet valve core according to claim 1, characterized in that: When the rib (31) is staggered from the limiting portion (21), the valve stem (2) is in the first position, i.e., the middle position of 0 degrees, and the faucet valve core is in a closed state.

3. The external silent valve stem shifting structure for a faucet valve core according to claim 2, characterized in that: A slope (22) is provided on one side of the limiting portion (21), and the swing of the valve stem (2) can cause the rib (31) to slide along the slope (22), thereby causing the elastic blocking portion (3) to deform, that is, the valve stem (2) changes from the first position to the second position, and the water flowing out of the faucet valve core is in a low flow state.

4. The external silent valve stem shifting structure for a faucet valve core according to claim 3, characterized in that: The limiting portion (21) is a wall portion with a plane, and the swing of the valve stem (2) can cause the rib (31) to slide along the inclined surface (22) to the wall portion of the limiting portion (21), so that the valve stem (2) changes from the second position to the third position, and the water flowing out of the faucet valve core is in a large flow state.

5. The external silent valve stem shifting structure for a faucet valve core according to claim 3, characterized in that: The front end of the convex rib (31) is in a pointed shape, and the inclined surface (22) matches the pointed shape of the front end of the convex rib (31).

6. The external silent valve stem shifting structure for a faucet valve core according to claim 1, characterized in that: The elastic blocking portion (3) is further provided with a notch (32), and the notch (32) is located below the rib (31).

7. The external silent valve stem shift structure for a faucet valve core according to any one of claims 1 to 6, characterized in that: The valve housing (1) is provided with a rotor (4) capable of rotating relative to the valve housing (1); the valve stem (2) is inserted into the rotor (4) of the valve housing (1) and the upper end of the valve stem (2) is exposed to the valve housing (1) and the rotor (4); the middle part of the valve stem (2) is rotatably connected to the rotor (4) via a pin shaft to achieve the swing of the valve stem (2) relative to the rotor (4) and the valve housing (1); the upper end of the rotor (4) extends upward to form the elastic blocking portion (3); and the elastic blocking portion (3) is arranged above one end of the pin shaft.

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