Puller device for a pull-out faucet and pull-out faucet

Abstract

The application provides a pull device and a pull faucet for the pull faucet, the pull device is arranged in a faucet base of the pull faucet; the pull device comprises a fixed pipe and a sliding pipe, the sliding pipe slides up and down in the fixed pipe, a water inlet space is formed between the sliding pipe and the fixed pipe, an upper end of the sliding pipe is connected with a pull pipe of the pull faucet, and a lower end of the sliding pipe is communicated with a water outlet end of a valve core of the pull faucet; the water inlet space is communicated with an external water source, and water pressure in the water inlet space can act on the sliding pipe to push the sliding pipe to slide downwards and drive the pull pipe to move downwards. The technical scheme can provide a pull faucet without a weight.

Description

Technical Field

[0001] This invention relates to a pull-out device for a pull-out faucet and a pull-out faucet. Background Technology

[0002] A pull-out kitchen faucet is a common kitchen appliance. Its main structure includes a main body, a water outlet pipe, a pull-out pipe, a pull-out head, a counterweight, and a connecting hose. The main body is typically mounted on the kitchen countertop and has a built-in valve core for controlling water flow and temperature. The water outlet pipe connects to the pull-out pipe via the connecting hose. One end of the pull-out pipe is connected to the pull-out head, and the other end is secured to the hose by the counterweight. Users can pull the pull-out head out of the water outlet pipe to meet various cleaning needs, such as washing the sink or rinsing larger items.

[0003] The counterweight is a key component of pull-out faucets, typically installed at the bottom of the pull-out tube. Its weight helps the pull-out head return to its original position. When the user releases the pull-out head, the counterweight pulls both the tube and the head back to their original position, completing the reset. In practice, the counterweight can easily interfere with the hose or other kitchen appliances (such as water pipes, garbage disposals, etc.) under the counter. Because the hose needs to move freely between the pull-out tube and the water source, collisions between the counterweight and the hose or other obstacles can obstruct the movement of the pull-out tube, affecting the pull-out experience and increasing the difficulty of operation. The counterweight is usually secured to the pull-out tube with clips or bolts. However, due to the vibration of the water pipe or collisions between the counterweight and the hose over time, the counterweight may become loose or shift. In this case, the counterweight cannot properly reset the pull-out head, requiring the user to manually readjust and secure it, increasing maintenance costs and potentially causing inconvenience and discomfort. Since the reset mechanism relies entirely on the weight of the counterweight, its effectiveness may be significantly reduced in complex installation environments (such as confined space or cluttered hose arrangements). Furthermore, misalignment of the counterweight can lead to incomplete reset, making it difficult for the extraction head to return to its original position, causing inconvenience to the user. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a pull-out faucet without a counterweight.

[0005] To solve the above-mentioned technical problems, the present invention provides a pull-out device for a pull-out faucet, wherein the pull-out device is disposed in the faucet seat body of the pull-out faucet.

[0006] The pull-out device includes a fixed tube and a sliding tube. The sliding tube slides up and down inside the fixed tube, and a water inlet space is formed between the sliding tube and the fixed tube. The upper end of the sliding tube is connected to the pull-out tube of the pull-out faucet, and the lower end of the sliding tube is connected to the water outlet of the valve core of the pull-out faucet. The water inlet space is connected to an external water source. The water pressure in the water inlet space can act on the sliding tube to push the sliding tube to slide downward, thereby driving the pull-out tube to move downward.

[0007] In a preferred embodiment, the sliding tube is provided with a pressure-bearing part, the pressure-bearing part including a first pressure-bearing surface that connects to the water inlet space and a second pressure-bearing surface that connects to the water outlet end of the valve core.

[0008] In a preferred embodiment, the pressure-bearing part is located inside the fixed pipe, the upper side of the pressure-bearing part forms the water inlet space, and the lower side of the pressure-bearing part is connected to the water outlet end of the valve core.

[0009] In a preferred embodiment, a water outlet pipe is connected between the water outlet end of the valve core and the fixed pipe.

[0010] In a preferred embodiment, the pull-out device further includes a water inlet seat;

[0011] The water inlet seat is fixedly installed on the faucet seat body, the fixed pipe is fixedly installed on the water inlet seat, and a valve seat is installed on the water inlet seat. The water inlet seat includes an internal flow channel connecting the fixed pipe and the valve seat. The valve seat is connected to the external water source to connect the internal flow channel.

[0012] In a preferred embodiment, the valve seat has a mating recess on the side facing the fixed tube;

[0013] The recessed groove can fit the outer wall of the fixed pipe, and the valve seat and the water inlet seat are connected by a plug-in structure so that the valve seat connects to the internal flow channel.

[0014] In a preferred embodiment, the insertion structure includes a water inlet recess disposed on the valve seat and a water inlet protrusion disposed on the water inlet seat, the water inlet protrusion being insertable into the water inlet recess.

[0015] In a preferred embodiment, the faucet seat includes a vertical chamber and a horizontal chamber, the horizontal chamber being connected to the vertical chamber;

[0016] The valve seat is installed in the horizontal chamber, and the valve seat is recessed in the vertical chamber. The water inlet seat is inserted into the valve seat from the upper opening of the vertical chamber. The recessed fitting is adapted to position the fixing pipe.

[0017] In a preferred embodiment, the valve seat is connected to the external water source via an inlet pipe. The valve seat includes a first water channel and a second water channel, which are respectively connected to the inlet pipe. The first water channel is connected to the internal flow channel, and the second water channel is connected to a valve core.

[0018] The present invention also provides a pull-out faucet, including the aforementioned pull-out device for the pull-out faucet.

[0019] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0020] A pull-out device for a pull-out faucet, the pull-out device being disposed within the faucet seat body of the pull-out faucet; the pull-out device comprising a fixed tube and a sliding tube, the sliding tube sliding up and down within the fixed tube, a water inlet space being formed between the sliding tube and the fixed tube, the upper end of the sliding tube being connected to the pull-out tube of the pull-out faucet, and the lower end of the sliding tube being connected to the water outlet end of the valve core of the pull-out faucet; the water inlet space being connected to an external water source, the water pressure within the water inlet space acting on the sliding tube to push the sliding tube downwards, thereby causing the pull-out tube to move downwards.

[0021] This device uses a fixed tube and a sliding tube within the faucet seat. Water pressure pushes the sliding tube downwards to reset the pull-out tube, eliminating the need for a traditional counterweight. This simplifies the pull-out tube's structure and effectively prevents interference between the counterweight and the under-counter hose or other equipment, resulting in a smoother pull-out process and improved user experience.

[0022] Using water pressure as the driving force ensures that the sliding tube can quickly return to its original position after use. Compared with gravity-based reset relying on a counterweight, the thrust provided by water pressure is more stable and unaffected by the installation environment, enabling reliable reset even in confined spaces or complex hose arrangements.

[0023] By integrating the pull-out mechanism inside the faucet body, the entire faucet structure becomes more compact and aesthetically pleasing. Furthermore, the water-pressure driven reset method reduces external components, further enhancing the overall design and aligning with the modern kitchen's pursuit of simplicity and efficiency. Attached Figure Description

[0024] Figure 1 This is a perspective view of a pull-out faucet in a preferred embodiment of the present invention;

[0025] Figure 2 This is an exploded view of a pull-out faucet in a preferred embodiment of the present invention;

[0026] Figure 3 This is a perspective view of the pull-out device in a preferred embodiment of the present invention;

[0027] Figure 4 This is a cross-sectional view of the pull-out device in a preferred embodiment of the present invention;

[0028] Figure 5 for Figure 4 A magnified view of a portion of the image;

[0029] Figure 6 This is a cross-sectional view of a pull-out faucet in a preferred embodiment of the present invention. At this time, water is flowing out of the valve core outlet, and the pull-out tube is not pulled out.

[0030] Figure 7 This is a cross-sectional view of a pull-out faucet in a preferred embodiment of the present invention. In this case, water is flowing out of the valve core outlet and the pull-out tube is pulled out.

[0031] Figure 8 for Figure 7 A magnified view of a portion of the image;

[0032] Figure 9 This is a three-dimensional schematic diagram of the valve core in a preferred embodiment of the present invention. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0034] See Figures 1-9 A pull-out faucet, comprising a faucet base 1, a water outlet bend 2, a water outlet head 3, a pull-out pipe 4, a valve assembly 5, and a pull-out device 6.

[0035] The faucet seat 1 includes a vertical pipe 11 and a horizontal pipe 12, which are connected. The vertical pipe 11 has a vertical chamber 111 inside, and the horizontal pipe 12 has a horizontal chamber 121 inside. The lower end of the vertical pipe 11 can be fixedly connected to a countertop, and the lower end of the water outlet bend 2 is rotatably connected to the upper end of the vertical pipe 11. The valve assembly 5 is mounted on the horizontal pipe 12.

[0036] The valve assembly 5 includes a valve seat 51, a valve core 52, a pressure cap 53, a fixing cap 54, a semi-circular cap 55, and a handle 56. The valve seat 51 can be inserted into the lateral opening 122 of the transverse tube 12. A first step 13 is formed radially inward at the connection between the transverse tube 12 and the vertical tube 11. A second step 511 is formed on the outer periphery of the valve seat 51, which is adapted to and connected to the first step 13. When the second step 511 abuts against the first step 13, the valve seat 51 at least partially extends into the vertical tube 11. The pressure cap 53 is threaded to the inner side of the transverse tube 12 to press and fix the valve seat 51. The valve core 52 can be placed into the transverse chamber 121, and the valve core 52 abuts against the valve seat 51 to achieve fluid communication with the valve seat 51. The valve core 52 can be a temperature control valve that can control both flow rate and temperature, or a flow control valve that can only control flow rate; it is not limited to these limitations. The fixed cover 54 is threadedly connected to the transverse chamber 121 to press against and fix the valve core 52, and the semi-circular cover 55 is connected to the fixed cover 54 to cover the entrance of the transverse chamber 121.

[0037] The pull-out device 6 is disposed within the faucet seat 1. The pull-out device 6 includes a fixed tube 61 and a sliding tube 62, the sliding tube 62 sliding up and down within the fixed tube 61. A water inlet space 63 is formed between the sliding tube 62 and the fixed tube 61, and the upper end of the sliding tube 62 is connected to the pull-out tube 4 of the pull-out faucet. The lower end of the pull-out tube 4 is connected to the upper end of the sliding tube 62, and the upper end of the pull-out tube 4 passes through the water outlet bend 2 and is connected to the water outlet head 3.

[0038] The lower end of the sliding tube 62 is connected to the water outlet 521 of the valve core of the pull-out faucet. The water inlet space 63 is connected to an external water source. The water pressure in the water inlet space 63 acts on the sliding tube 62, pushing it downwards and causing the pull-out tube 4 to move downwards. The sliding tube 62 receives water pressure from the water inlet space 63, resulting in a downward thrust. The user can then pull out the water outlet 3. Since the water inlet space 63 is connected to an external water source, the water pressure from the external source is continuously transmitted into the water inlet space 63. The sliding tube 62 is constantly subjected to water pressure. After the user releases the water outlet 3, the sliding tube 62 slides downwards, causing the pull-out tube 4 to move downwards until the water outlet 3 returns to its initial position.

[0039] The sliding tube 62 is provided with a pressure-bearing portion 621, which includes a first pressure-bearing surface 6211 that connects to the water inlet space 63 and a second pressure-bearing surface 6212 that connects to the valve core outlet end 521. In this embodiment, the pressure-bearing portion 621 is located inside the fixed tube 61, the upper side of the pressure-bearing portion 621 forms the water inlet space 63, and the lower side of the pressure-bearing portion 621 communicates with the valve core outlet end 521. In this embodiment, the lower end of the sliding tube 62 expands radially outward to form the pressure-bearing portion 621, the first pressure-bearing surface 6211 is annular and faces the water inlet space 63, and the second pressure-bearing surface 6212 is annular and faces away from the water inlet space 63. When there is water in both the inlet space 63 and the outlet 521 of the valve core (i.e., when water is flowing out of the pull-out pipe 4), the second pressure-bearing surface 6212 is subjected to an upward thrust, and the first pressure-bearing surface 6211 is subjected to a downward thrust. At this time, the thrust on the first pressure-bearing surface 6211 is offset by the thrust on the second pressure-bearing surface 6212. Therefore, the user can pull out the outlet head 3 relatively easily. In this embodiment, the second pressure-bearing surface 6212 is approximately equal to the first pressure-bearing surface 6211. Therefore, when both the upper and lower sides of the pressure-bearing part 621 are under pressure, the upper and lower sides of the sliding pipe 62 are in a state of water pressure balance.

[0040] In this embodiment, since the pressure-bearing part 621 is the lower end of the sliding tube 62, a first sealing ring 641 is sealingly connected between the outer peripheral wall of the pressure-bearing part 621 and the inner wall of the fixed tube 61. Because the first sealing ring 641 is located between the first pressure-bearing surface 6211 and the second pressure-bearing surface 6212, the first sealing ring 641 slides more smoothly.

[0041] A water outlet pipe 7 connects the valve core outlet 521 and the fixed pipe 61. The valve core outlet 521 can be controlled by the valve core 52 to allow water to flow out or stop. When water flows out from the valve core outlet 521, the water flows through the water outlet pipe 7 into the fixed pipe 61, then flows into the sliding pipe 62 from its lower end, and then flows into the pull-out pipe 4 from its upper end, finally exiting from the water outlet 3. During this process, because the sliding pipe 62 is in a state of water pressure equilibrium, the user can easily pull and remove the water outlet 3. When the valve core outlet 521 stops flowing, since the second pressure-bearing surface 6212 does not bear water pressure, the sliding pipe 62 is only subjected to a downward thrust. Water from an external source can continuously enter the water inlet space 63, forcing the sliding pipe 62 to move downwards, thereby driving the pull-out pipe 4 downwards.

[0042] The pull-out device 6 also includes a water inlet seat 65. The water inlet seat 65 is fixedly mounted on the faucet seat 1, the fixing pipe 61 is fixedly mounted on the water inlet seat 65, and the valve seat 51 is mounted on the water inlet seat 65. The water inlet seat 65 includes an internal flow channel 652 connecting the fixing pipe 61 and the valve seat 51; the valve seat 51 is connected to an external water source to access the internal flow channel 652. The upper end of the fixing pipe 61 is screwed onto the water inlet seat 65, and the upper end of the fixing pipe 61 is connected to the internal flow channel 652. The upper end of the sliding pipe 62 passes upward through the water inlet seat 65 and is slidably connected to the water inlet seat 65. A second sealing ring 642 is sealingly connected between the outer wall of the sliding pipe 62 and the water inlet seat 65, allowing the sliding pipe 62 to slide relatively smoothly via the first sealing ring 641 and the second sealing ring 642.

[0043] The valve seat 51 has a mating recess 512 on the side facing the fixed pipe 61; the mating recess 512 can fit the outer wall of the fixed pipe 61, and the valve seat 51 and the water inlet seat 65 are connected by a plug-in structure so that the valve seat 51 connects to the internal flow channel 652. In this embodiment, the plug-in structure includes a water inlet recess 513 provided on the valve seat 51 and a water inlet protrusion 651 provided on the water inlet seat 65, and the water inlet protrusion 651 can be plugged into the water inlet recess 513.

[0044] During installation, the valve seat 51 is installed in the transverse chamber 121, and the mating recess 512 of the valve seat 51 is located in the vertical chamber 111. The water inlet seat 65 is inserted into the valve seat 51 through the upper opening of the vertical chamber 111, and the water inlet seat 65 can be snapped into the upper opening of the vertical chamber 111. The mating recess 512 is adapted to position the fixing tube 61. Specifically, the valve assembly 5 is first installed on the transverse chamber 121, and the fixing tube 61, sliding tube 62, and water inlet seat 65 are connected together. Subsequently, the water inlet seat 65 is installed downward to the upper opening of the vertical chamber 111. At this time, the fixing tube 61 is arranged in the vertical chamber 111 and is positioned in conjunction with the mating recess 512. The water outlet pipe 7 then connects the valve seat 51 and the fixing tube 61.

[0045] In this embodiment, the valve seat 51 is connected to the external water source via the inlet pipe 57. The valve seat 51 includes a first water channel 514 and a second water channel 515, which are respectively connected to the inlet pipe 57. The first water channel 514 is connected to the internal flow channel 652, and the second water channel 515 is connected to the valve core 52. Since both the first water channel 514 and the second water channel 515 are connected to the inlet pipe 57, when the valve core 52 opens the valve core outlet 521, and the sliding tube 62 moves upward, the water in the inlet space 63 can flow from the first water channel 514 to the valve core 52 (the first water channel 514 and the second water channel 515 are connected via the inlet pipe 57), without causing pressure buildup. When the valve core outlet 521 stops discharging water, excess water in the fixed tube 61 can flow out through the outlet head 3.

[0046] In this embodiment, the fixed tube 61 is a rigid tube, and the sliding tube 62 is a flexible tube or a rigid tube.

[0047] The above description is merely a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial modifications made to the present invention by those skilled in the art within the scope of the technology disclosed in the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. A pull-out device for a pull-out faucet, characterized in that, The pull-out device is installed in the faucet seat of the pull-out faucet. The pull-out device includes a fixed tube and a sliding tube. The sliding tube slides up and down inside the fixed tube, and a water inlet space is formed between the sliding tube and the fixed tube. The upper end of the sliding tube is connected to the pull-out tube of the pull-out faucet, and the lower end of the sliding tube is connected to the water outlet of the valve core of the pull-out faucet. The water inlet space is connected to an external water source. The water pressure in the water inlet space can act on the sliding tube to push the sliding tube to slide downward, thereby driving the pull-out tube to move downward.

2. The pull-out device for a pull-out faucet as described in claim 1, characterized in that: The sliding tube is provided with a pressure-bearing part, which includes a first pressure-bearing surface that connects to the water inlet space and a second pressure-bearing surface that connects to the water outlet end of the valve core.

3. A pull-out device for a pull-out faucet as described in claim 2, characterized in that: The pressure-bearing part is located inside the fixed pipe, the upper side of the pressure-bearing part forms the water inlet space, and the lower side of the pressure-bearing part is connected to the water outlet end of the valve core.

4. A pull-out device for a pull-out faucet as described in claim 3, characterized in that: A water outlet pipe is connected between the water outlet end of the valve core and the fixed pipe.

5. A pull-out device for a pull-out faucet as described in claim 1, characterized in that: The pull-out device also includes a water inlet seat; The water inlet seat is fixedly installed on the faucet seat body, the fixed pipe is fixedly installed on the water inlet seat, and a valve seat is installed on the water inlet seat. The water inlet seat includes an internal flow channel connecting the fixed pipe and the valve seat. The valve seat is connected to the external water source to connect the internal flow channel.

6. A pull-out device for a pull-out faucet as described in claim 5, characterized in that: The valve seat has a mating recess on the side facing the fixed tube; The recessed groove can fit the outer wall of the fixed pipe, and the valve seat and the water inlet seat are connected by a plug-in structure so that the valve seat connects to the internal flow channel.

7. A pull-out device for a pull-out faucet as described in claim 6, characterized in that: The insertion structure includes a water inlet recess on the valve seat and a water inlet protrusion on the water inlet seat, wherein the water inlet protrusion can be inserted into the water inlet recess.

8. A pull-out device for a pull-out faucet as described in claim 6, characterized in that: The faucet seat includes a vertical chamber and a horizontal chamber, with the horizontal chamber connected to the vertical chamber; The valve seat is installed in the horizontal chamber, and the valve seat is recessed in the vertical chamber. The water inlet seat is inserted into the valve seat from the upper opening of the vertical chamber. The recessed fitting is adapted to position the fixing pipe.

9. A pull-out device for a pull-out faucet as described in claim 5, characterized in that: The valve seat is connected to the external water source through an inlet pipe. The valve seat includes a first water channel and a second water channel. The first water channel and the second water channel are respectively connected to the inlet pipe. The first water channel is connected to the internal flow channel, and the second water channel is connected to a valve core.

10. A pull-out faucet, characterized in that, Includes a pull-out device for a pull-out faucet as described in any one of claims 1-9.

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