A pull-out faucet with labor-saving operation

Abstract

The utility model discloses a pull-out faucet which is labor-saving to operate, comprising a valve core and a cavity, a piston being arranged in the cavity, an edge being arranged on the outer periphery of the piston, the edge being sealably connected to the cavity, a water passage cavity being formed by the cavity between the edge of the piston and the water outlet end of the valve core, a water passage being arranged in the middle of the piston, a water inlet being arranged on the piston which can connect the water passage with the water passage cavity, a pull-out tube being communicated with the water passage being connected to the piston; and a lifting rod being further included, one end of the lifting rod being connected to the piston in the cavity, the other end of the lifting rod being connected to a weight being located outside the water passage cavity. The utility model omits a mixed water outlet pipe, reduces the size of the faucet, and at the same time, there is no need to continuously pull the pull-out head, so that the pull-out head can be suspended when in use.

Description

Technical Field

[0001] The utility model relates to a pull-out faucet with labor-saving operation. Background Art

[0002] At present, most of the pull-out faucets on the market use a heavy hammer under the counter to cooperate with the pull-out tube for pulling. This means that the faucet needs to be equipped with cold and hot water pipes, mixed water pipes and pull-out tubes at the same time, which requires a lot of space, resulting in a large horizontal space, and the outer diameter and shape of the faucet must be designed to be larger. In addition, some products use springs, elastic ropes and other methods to replace heavy hammers, but these methods have the problem that the pulling resistance will gradually increase as the pulling length increases during operation, and the recovery force is prone to insufficient. At the same time, as the number of uses increases, the elastic parts fatigue and elastic force changes, etc., which will affect the user's operating experience. The most important thing is that when the current pull-out faucet is pulled out for use, continuous force is required to pull the pull head to the maximum position, and the pulling force must be maintained for normal use. If the pulling force is withdrawn, the pull head will return to its original position under the action of the heavy hammer. Summary of the invention

[0003] In order to solve the above technical problems, the purpose of the utility model is to provide a pull-out faucet with labor-saving operation, which omits the mixing water pipe and uses a pull-out rod to replace the original pull-out pipe to connect the under-table weight, so as to achieve the pull-out function on the faucet with a smaller outer diameter. At the same time, the different forces of water pressure on cross-sections of different sizes are used to achieve that the pull-out head can be fixed when it is not necessary to pull it out, and can be pulled out and automatically popped out when it is pulled out, and it can automatically hover after being pulled out, and after the water pressure is turned off and lost, the pull-out head can be automatically reset under the action of the weight. It is not only labor-saving to pull out, but also has a hovering function after pulling out. There is no need to overcome the gravity of the weight while using the pull-out head, which is convenient for users to operate, and the recovery and reset are stable and not affected by elastic force.

[0004] The utility model is realized by the following technical solutions:

[0005] A pull-out faucet with labor-saving operation comprises a valve core and a cavity, a piston is arranged in the cavity, an edge is arranged on the outer periphery of the piston, the edge can be sealed and connected with the cavity, the cavity between the edge of the piston and the water outlet end of the valve core forms a water passage cavity, a water passage is arranged in the middle of the piston, a water inlet hole which can connect the water passage with the water passage cavity is also arranged on the piston, a pull-out tube which can communicate with the water passage is connected to the piston; and a lifting rod is also included, one end of which is connected with the piston in the cavity, and the other end of the lifting rod is connected with a weight, and the weight is located outside the water passage cavity.

[0006] In an embodiment of the utility model, it also includes a base and an inner tube, a valve core seat is provided in the base, the valve core can be installed on the valve core seat, the piston moves in the inner tube, the edge of the outer periphery of the piston can be sealed with the inner circumferential wall of the inner tube, and the cavity can be located between the inner tube and the valve core seat.

[0007] In an embodiment of the utility model, the valve core seat is provided with a through hole which passes through from top to bottom, and the through hole can be connected with the interior of the inner tube. The valve core seat is also provided with a water through hole, and the water through hole can connect the through hole and the water outlet end of the valve core. The lifting rod is arranged in the through hole, and a first sealing ring is arranged between the outer periphery of the lifting rod and the inner periphery of the through hole. The first sealing ring is located in the through hole below the water through hole.

[0008] In an embodiment of the utility model, a guide sleeve is provided between the outer periphery of the lifting rod and the inner periphery of the through hole, and the guide sleeve is located above and / or below the first sealing ring.

[0009] In an embodiment of the utility model, a connecting ring is also included, which can be fixed in the water passage chamber, the lower end surface of the edge can abut against the upper end surface of the connecting ring, and a second sealing ring is arranged between the inner periphery of the connecting ring and the piston, and the second sealing ring can be located above the water inlet hole.

[0010] In the embodiment of the utility model, a hollow rotating shaft is also included, wherein the outer periphery of the lower end of the rotating shaft is connected to the valve core seat, and the inner periphery of the rotating shaft is connected to the outer periphery of the lower end of the inner tube.

[0011] In the embodiment of the utility model, a step surface is provided in the middle of the rotating shaft, the lower end surface of the connecting ring is supported above the step surface, a flange is also provided on the outer periphery of the connecting ring, and the lower end of the inner tube is supported above the flange.

[0012] In the embodiment of the utility model, a clamping ring is arranged on the inner periphery of the upper end of the inner tube, and the lower end surface of the clamping ring can abut and cooperate with the upper end surface of the edge to limit the upward movement of the piston in the cavity.

[0013] In an embodiment of the utility model, a bushing is further included, wherein the bushing is sleeved on the outer periphery of the rotating shaft, an outer tube is sleeved on the outer periphery of the bushing, one end of the outer tube is arranged above the base, and the inner tube and the pulling tube can be located inside the outer tube.

[0014] In the embodiment of the utility model, the water outlet end of the pull-out tube is connected with a pull-out head, and the pull-out head can be connected to the other end of the outer tube; it also includes a cold water pipe and a hot water pipe that can be connected to the valve core.

[0015] The utility model discloses a pull-out faucet which is labor-saving to operate, and has the following beneficial effects: 1. It eliminates the need for a mixing water pipe, so that the pull-out function can be realized on a faucet with a smaller outer diameter; 2. When pulled out, it can be automatically popped out without subsequent pulling force, and pulling out is labor-saving and convenient; 3. The pull-out head can be automatically reset after the water is turned off; and the recovery and reset are stable and not affected by elastic force; 4. After being pulled out, the pull-out head has a hovering function, and there is no need to continuously overcome the gravity of the heavy hammer, so that the pull-out head can be kept in a pulled-out state in the water-out state, which is convenient for users to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a stereogram of the utility model.

[0018] Figure 2 It is a cross-sectional view of the utility model.

[0019] Figure 3 yes Figure 2 A magnified schematic diagram of center A.

[0020] Figure 4 yes Figure 2 A magnified schematic diagram of point B in the middle.

[0021] Figure 5 It is a schematic diagram of the pull-out assembly in the utility model.

[0022] Figure 6 It is a schematic diagram of the utility model when the pull-out head is pulled out. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0028] Referring to the drawings of the specification, a pull-out faucet with labor-saving operation includes a valve core 11 and a cavity 10, a piston 20 is arranged in the cavity, the piston can move in the cavity, an edge 21 is arranged on the periphery of the piston, the edge can be sealed and connected with the cavity to ensure that the water flow will not leak, the cavity between the edge of the piston and the water outlet end of the valve core forms a water passage cavity 12, a water passage 22 is arranged in the middle of the piston, and a water inlet hole that can connect the water passage with the water passage cavity is also arranged on the piston 23. After water flows out of the valve core, it flows through the water cavity (the size of which can change with the movement of the piston), and then can only pass through the water hole and the pull-out tube of the water channel, and then flow out from the pull-out head. The piston is connected to a pull-out tube 13 that can be connected to the water channel; it also includes a lifting rod 30, one end of which is connected to the piston located in the cavity, and the other end of the lifting rod is connected to a weight 31, which is located outside the water cavity, so that the weight, the lifting rod and the piston can move synchronously.

[0029] Preferably, it also includes a base 14 and an inner tube 15, wherein a valve core seat 40 is provided in the base, and the valve core can be installed on the valve core seat. Meanwhile, the cold water pipe and the hot water pipe are also plugged into the valve core seat to communicate with the valve core, and the piston moves in the inner tube, and the edge of the outer periphery of the piston can be sealed with the inner circumferential wall of the inner tube, and the cavity can be located between the inner tube and the valve core seat.

[0030] Furthermore, the valve core seat is provided with a through hole 41 that runs through from top to bottom, and the through hole can be connected to the interior of the inner tube. In use, the through hole at the upper end of the first sealing ring and the lower end of the edge form a water passage cavity. The valve core seat is also provided with a water passage hole 42, and the water passage hole can connect the through hole and the water outlet of the valve core. The lifting rod is arranged in the through hole, and a first sealing ring 43 is arranged between the outer periphery of the lifting rod and the inner periphery of the through hole. The first sealing ring is located in the through hole below the water passage hole, so as to ensure that the water flows upward and will not cause water leakage. A guide sleeve 44 is arranged between the outer periphery of the lifting rod and the inner periphery of the through hole, and the guide sleeve is located above and / or below the first sealing ring.

[0031] Furthermore, it also includes a connecting ring 50, which can be fixed in the water passage chamber. When the pulling head is not pulled out, the lower end surface of the edge can abut against the upper end surface of the connecting ring. A second sealing ring 51 is provided between the inner circumference of the connecting ring and the piston. The second sealing ring can be located above the water inlet hole. When the pulling head is pulled out, the piston leaves the inner circumference of the connecting ring. At this time, the lifting rod is located at the inner circumference of the second sealing ring. There is a gap between them for water to pass through, that is, the outer diameter of the lifting rod is smaller than the inner diameter of the second sealing ring.

[0032] Preferably, it also includes a hollow shaft 60, the outer periphery of the lower end of the shaft is connected to the valve core seat, and the inner periphery of the shaft is connected to the outer periphery of the lower end of the inner tube, and the connection method can be a threaded method. Similarly, other sealing rings are provided at the connection points of each component, and please refer to the drawings in the specification for details. A step surface 61 is provided in the middle of the shaft, and the lower end surface of the connecting ring is supported above the step surface. A flange 52 is also provided on the outer periphery of the connecting ring, and the lower end of the inner tube is supported above the flange, so that the connecting ring is pressed onto the supporting surface through the inner tube.

[0033] Furthermore, a clamping ring 16 is provided on the inner periphery of the upper end of the inner tube, and the lower end surface of the clamping ring can abut against the upper end surface of the edge to limit the upward movement of the piston in the cavity. When the clamping ring abuts against the upper end surface of the edge, the pulling head is pulled out to the maximum stroke.

[0034] Furthermore, it also includes a bushing 70, which is sleeved on the outer periphery of the rotating shaft, and the outer periphery of the bushing is sleeved with an outer tube 18, one end of which is arranged above the base, and the inner tube and the pull-out tube can be located inside the outer tube. The outlet end of the pull-out tube is connected to a pull-out head 19, which can be connected to the other end of the outer tube; it also includes a cold water pipe 81 and a hot water pipe 82 that can be connected to the valve core, so that only two pipes (cold water pipe and hot water pipe) are arranged at the base, which is more than the prior art that uses at least one pipe, so that the outer diameter required by the base can be spaced, and the small-sized base can also achieve the pull-out function.

[0035] The utility model designs a new type of pull-out faucet, which eliminates the mixing water pipe and directly connects the valve core mixed water to the pull-out tube through the valve core seat and the rotating shaft. The pull-out tube does not need to pass through the base and extend to the bottom of the installation table. An inner tube (which can be made of metal material) is provided inside the faucet as a pull-out movement cavity of the piston at one end of the pull-out tube, so that the pull-out tube can be pulled only above the valve core. At the same time, a lifting rod is provided to replace the original pull-out tube to connect the weight under the table to provide the power required for pulling and resetting. The utility model can realize the pull-out function on faucets with smaller outer diameters. At the same time, the different forces of water pressure on cross-sections of different sizes are used to achieve the fixation of the pull-out head when it is not necessary to pull it out and the automatic pop-up of the pull-out head when it is pulled out, and it can automatically hover after being pulled out. In addition, after the water pressure is turned off and the water pressure is lost, the pull-out head can be automatically reset under the action of the weight of the weight itself.

[0036] The utility model is more specific: the new pull-out faucet is designed with a pull-out assembly, which includes a pull-out tube, a pull-up rod and a pull-out head; pistons and pipe joints are provided at both ends of the pull-out tube, the pull-out head is fixedly connected to the pull-out tube through the pipe joint, and the pull-up rod is fixedly connected to the pull-out tube through the piston to achieve synchronous movement; the pull-up rod passes through the valve core seat and extends to the underside of the table, and a heavy hammer is fixedly installed on the underside of the table. The pull-out assembly can be pulled and reset in the inner tube, and the inner tube is fixed in the rotating shaft; one end of the inner tube that matches the rotating shaft is also equipped with a connecting ring, and the connecting ring is pressed against the step surface of the rotating shaft by the inner tube; the other end of the inner tube is equipped with a clamping ring as the end point for the pull-out head to be pulled out. The connecting ring, the rotating shaft, and the valve core seat are all provided with holes in the middle. The piston can pass through the hole of the connecting ring and be connected by tightening with a heavy hammer through a lifting rod; the rotating shaft and the valve core seat are tightened and fixed to the base, and a guide sleeve is also installed in the through hole on the valve core seat to provide a guide for the up and down movement of the lifting rod. A first sealing ring providing a dynamic seal is also installed in the middle of the guide sleeve. A second sealing ring with a sealing function is also installed in the hole of the connecting ring. A bushing is also sleeved on the outside of the rotating shaft, and the outer tube (which can also be a curved tube) is rotatably mounted on the bushing. The valve core is pressed against the valve core seat by a valve core pressure cover (which is a prior art and will not be elaborated in detail here). Referring to the schematic diagram of the pull-out assembly, the pipe joint on the pull-out tube can be designed to be snap-connected with the pipe sleeve fixed at the end of the curved tube to ensure that the pull-out head is close to the curved tube, while preventing consumers from accidentally operating the pull-out tube and automatically pulling it out. When the pull-out head is hung on the outer tube of the faucet (i.e., non-pulling state), under the action of the weight, the piston is pressed against the connecting ring. At this time, the second sealing ring on the connecting ring plays a sealing role. Therefore, the overall pressure-bearing area of ​​the pull-out assembly is small (i.e., the inner circumference size of the second sealing ring). The upward thrust caused by the water pressure is insufficient to overcome the gravity of the weight and the friction during the pulling process. The pull-out head can remain fixed on the faucet to discharge water. When pulling is required, the pull-out head is pulled out a short distance by human (external force), and the piston is away from the connecting ring (a certain distance is formed between the edge and the connecting ring). Please refer to the attached figure of the instruction manual. Figure 6 At this time, the second sealing ring on the connecting ring loses its sealing function, and the water first fills the space between the edge of the piston and the connecting ring, and then flows to the pull-out head. As the pressure-bearing section of the edge of the piston increases, the upward thrust of the water pressure on the entire pull-out assembly also increases, resulting in a thrust greater than the weight of the weight and the friction force (friction between the edge and the inner tube), so that the pull-out head can be automatically popped out under the action of the water pressure without the need for subsequent pulling force, until the edge and the clamping ring abut and reach the limit position. This state is maintained under the continuous water pressure, that is, the pull-out head is in a suspended state. When the faucet is turned off, the pull-out assembly loses the water pressure, and the friction force will be overcome by the weight, causing the pull-out head to reset until the edge of the piston is close to the connecting ring.

[0037] The above description shows and describes the preferred embodiments of the utility model. As mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A pull-out faucet with labor-saving operation, comprising a valve core and a cavity, characterized in that: A piston is arranged in the cavity, and an edge is arranged on the outer periphery of the piston, and the edge can be sealed and connected with the cavity, and the cavity between the edge of the piston and the water outlet end of the valve core forms a water passage cavity, and a water passage is arranged in the middle of the piston, and a water inlet hole which can connect the water passage with the water passage cavity is also arranged on the piston, and a pulling tube which can communicate with the water passage is connected to the piston; a lifting rod is also included, and one end of the lifting rod is connected with the piston in the cavity, and the other end of the lifting rod is connected with a weight, and the weight is located outside the water passage cavity.

2. The pull-out faucet with labor-saving operation according to claim 1, characterized in that: It also includes a base and an inner tube, wherein a valve core seat is arranged in the base, the valve core can be installed on the valve core seat, the piston moves in the inner tube, the edge of the outer periphery of the piston can be sealed with the inner peripheral wall of the inner tube, and the cavity can be located between the inner tube and the valve core seat.

3. The pull-out faucet with labor-saving operation according to claim 2, characterized in that: The valve core seat is provided with a through hole which passes through from top to bottom, and the through hole can be connected with the interior of the inner tube. The valve core seat is also provided with a water through hole, and the water through hole can connect the through hole and the water outlet end of the valve core. The lifting rod is arranged in the through hole, and a first sealing ring is arranged between the outer periphery of the lifting rod and the inner periphery of the through hole, and the first sealing ring is located in the through hole below the water through hole.

4. The pull-out faucet with labor-saving operation according to claim 3, characterized in that: A guide sleeve is arranged between the outer periphery of the lifting rod and the inner periphery of the through hole, and the guide sleeve is located above and / or below the first sealing ring.

5. The labor-saving pull-out faucet according to any one of claims 2 to 4, characterized in that: It also includes a connecting ring, which can be fixed in the water passage cavity, the lower end surface of the edge can abut against the upper end surface of the connecting ring, and a second sealing ring is arranged between the inner periphery of the connecting ring and the piston, and the second sealing ring can be located above the water inlet hole.

6. The pull-out faucet with labor-saving operation according to claim 5, characterized in that: It also includes a hollow rotating shaft, the outer periphery of the lower end of the rotating shaft is connected to the valve core seat, and the inner periphery of the rotating shaft is connected to the outer periphery of the lower end of the inner tube.

7. The pull-out faucet with labor-saving operation according to claim 6, characterized in that: A step surface is arranged in the middle of the rotating shaft, the lower end surface of the connecting ring is received above the step surface, a flange is also arranged on the outer periphery of the connecting ring, and the lower end of the inner tube is received above the flange.

8. The labor-saving pull-out faucet according to claim 7, characterized in that: A clamping ring is arranged on the inner periphery of the upper end of the inner tube, and the lower end surface of the clamping ring can abut against the upper end surface of the edge to limit the upward movement of the piston in the cavity.

9. The pull-out faucet with labor-saving operation according to claim 8, characterized in that: It also includes a bushing, which is sleeved on the outer periphery of the rotating shaft. The outer periphery of the bushing is sleeved with an outer tube, one end of the outer tube is arranged above the base, and the inner tube and the pulling tube can be located inside the outer tube.

10. The labor-saving pull-out faucet according to claim 9, characterized in that: The water outlet end of the pull-out pipe is connected with a pull-out head, and the pull-out head can be connected to the other end of the outer pipe; and also includes a cold water pipe and a hot water pipe that can be connected to the valve core.

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