Inductance type drawing faucet

Abstract

The utility model discloses an inductance type drawing faucet, which comprises a faucet body, a water inlet pipe and a water outlet pipe, the drawing pipe is movably arranged in the drawing channel in a penetrating manner and is provided with a water outlet channel; the drawing head is connected with the water outlet end of the drawing pipe; the control valve is used for controlling the on-off of the water outlet channel; the switch assembly is electrically connected with the control valve, and the switch assembly comprises a metal object and an induction coil; the metal object is fixedly arranged relative to one of the faucet body and the drawing pipe, and the induction coil is fixedly arranged relative to the other one of the faucet body and the drawing pipe. When the attenuation value or the inductance value of an alternating magnetic field generated when the metal object gets close to or away from the induction coil reaches a preset value, the control valve controls the water outlet channel to be opened or closed. The scheme is not influenced by non-metal factors such as dust during working, is low in power consumption and long in service life, and can be used under various severe conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of processing tools, and in particular to an inductive pull-out faucet. Background Art

[0002] Pull-out faucets are widely loved by consumers because they allow people to freely move the pull-out head on the faucet for water discharge, making it easier for people to clean. Existing pull-out faucets generally use manual valve cores to control water discharge, which is still inconvenient to use. Therefore, some people have developed electronic pull-out faucets, which can make water discharge when people pull the pull-out head, and stop water when the pull-out head is reset, making it more convenient to use.

[0003] Existing electronic pull-out faucets use mechanical contact switches, which adopt the principle of mechanical contacts and have a complex structure. Since the position of the pull-out hose is not fixed, the mechanical switch requires high assembly precision and is prone to misoperation. The mechanical contact as the actuating mechanism is not conducive to glue filling to isolate water vapor and is prone to contact corrosion. Utility Model Content

[0004] The utility model provides an inductive pull-out faucet. The switch component of the solution has no sliding contacts, is not affected by non-metallic factors such as dust when working, has low power consumption and long service life, and can be used in various harsh conditions.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] An inductive pull-out faucet, comprising:

[0007] The faucet body is provided with a pull-out channel;

[0008] A drawing tube is movably arranged in the drawing channel and is provided with a water outlet channel;

[0009] A pull-out head connected to the water outlet end of the pull-out tube;

[0010] A control valve, used to control the on-off of the water outlet channel;

[0011] A switch assembly is electrically connected to the control valve, and the switch assembly includes a metal object and an induction coil; wherein the metal object is fixedly arranged relative to one of the faucet body and the pull-out tube, and the induction coil is fixedly arranged relative to the other of the faucet body and the pull-out tube. During the pulling process of the pull-out tube, when the attenuation value or inductance value of the alternating magnetic field generated by the metal object approaching or moving away from the induction coil reaches a preset value, the control valve controls the water outlet channel to be opened or closed.

[0012] Preferably, the metal object is a metal sleeve sleeved outside the pull-out tube, and the induction coil is arranged in the faucet body.

[0013] Preferably, a magnetic core is provided in the faucet body, the magnetic core is arranged in a direction perpendicular to the axial center line of the pull-out tube, and the induction coil is wound around the outer periphery of the magnetic core rod.

[0014] Preferably, a side of the induction coil facing the metal object forms an induction surface.

[0015] Preferably, the metal object is made of a damping material, and the damping material is iron, copper or stainless steel.

[0016] Preferably, a U-shaped frame is provided in the faucet body, and the induction coil is wound around the U-shaped frame and cooperates with the metal object to form a U-shaped magnetic circuit.

[0017] Preferably, the metal object is made of magnetically permeable material.

[0018] Preferably, the induction coil is wound around the outside of the drawing tube along the circumference of the drawing tube.

[0019] Preferably, the metal object is made of magnetically permeable material.

[0020] Preferably, it also includes a circuit control board and an infrared sensing window.

[0021] The beneficial effects of the utility model are:

[0022] The utility model discloses an inductive pull-out faucet, comprising a faucet body, provided with a pull-out channel; a pull-out tube, which is movably arranged in the pull-out channel and provided with a water outlet channel; a pull-out head, connected to the water outlet end of the pull-out tube; a control valve, used to control the on-off of the water outlet channel; a switch component, electrically connected to the control valve, the switch component comprising a metal object and an induction coil; wherein the metal object is fixedly arranged relative to one of the faucet body and the pull-out tube, and the induction coil is fixedly arranged relative to the other of the faucet body and the pull-out tube. During the pulling and pulling process of the pull-out tube, when the attenuation value or inductance value of the alternating magnetic field generated by the metal object approaching or moving away from the induction coil reaches a preset value, the control valve controls the water outlet channel to be opened or closed. The switch component of this scheme has no sliding contacts, is not affected by non-metallic factors such as dust when working, has low power consumption and long life, and can be used under various harsh conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0024] Figure 1 It is a cross-sectional schematic diagram of an inductive pull-out faucet according to the first embodiment of the utility model;

[0025] Figure 2 It is a partial cross-sectional schematic diagram of an inductive pull-out faucet according to the first embodiment of the utility model;

[0026] Figure 3 It is a cross-sectional schematic diagram of an inductive pull-out faucet according to the second embodiment of the utility model;

[0027] Figure 4 This is a cross-sectional schematic diagram of an inductive pull-out faucet according to the third embodiment of the utility model.

[0028] Reference numerals:

[0029] 10. Faucet body; 11. Pull-out channel; 20. Pull-out tube; 21. Water outlet channel; 30. Pull-out head; 40. Metal object; 50. Induction coil; 60. Magnetic core; 70. U-shaped frame; 80. Circuit control board; 90. Infrared sensing window. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0031] Embodiment 1:

[0032] like Figure 1 and Figure 2 As shown, the present embodiment discloses an inductive pull-out faucet, comprising: a faucet body 10, provided with a pull-out channel 11; a pull-out tube 20, movably arranged in the pull-out channel 11 and provided with a water outlet channel 21; a pull-out head 30, connected to the water outlet end of the pull-out tube 20; a control valve, used to control the on-off of the water outlet channel 21; a switch assembly, electrically connected to the control valve, the switch assembly comprising a metal object 40 and an induction coil 50; wherein the metal object 40 is fixedly arranged relative to one of the faucet body 10 and the pull-out tube 20, and the induction coil 50 is fixedly arranged relative to the other of the faucet body 10 and the pull-out tube 20, and during the pulling process of the pull-out tube 20, when the attenuation value or inductance value of the alternating magnetic field generated by the metal object 40 approaching or moving away from the induction coil 50 reaches a preset value, the control valve controls the water outlet channel 21 to be opened or closed.

[0033] In this embodiment, the metal object 40 is a metal sleeve sleeved outside the pull-out tube 20 , and the induction coil 50 is disposed in the faucet body 10 .

[0034] In this embodiment, a magnetic core 60 is disposed in the faucet body 10 . The magnetic core 60 is disposed in a direction perpendicular to the axis of the pull-out tube 20 . The induction coil 50 is wound around the outer periphery of the magnetic core 60 .

[0035] In this embodiment, a side of the induction coil 50 facing the metal object 40 forms an induction surface.

[0036] In this embodiment, the metal object 40 is made of a damping material, and the damping material is iron, copper or stainless steel. The material of the metal object 40 in this embodiment is specifically iron.

[0037] In this embodiment, a circuit control board 80 and an infrared sensing window 90 are also included.

[0038] Working principle:

[0039] The induction coil 50 circuit generates an alternating current. When a metal object 40 approaches, eddy currents are generated on the surface of the metal object 40, causing the oscillation amplitude of the circuit oscillator to be greatly attenuated, thereby achieving position recognition. The opening and closing of the control valve is controlled by the circuit control board 80, thereby controlling the on and off of the water outlet channel 21 of the pull-out tube 20.

[0040] Embodiment 2:

[0041] like Figure 3 As shown, the main difference between this embodiment and the first embodiment is that in this embodiment, a U-shaped frame 70 is provided inside the faucet body 10, and the induction coil 50 is wound around the U-shaped frame 70 and cooperates with the metal object 40 to form a U-shaped magnetic circuit. In this embodiment, the metal object 40 is made of magnetically permeable material.

[0042] Other undescribed parts are consistent with the first embodiment and will not be described again here.

[0043] Embodiment 3:

[0044] like Figure 4 As shown, the main difference between this embodiment and the first embodiment is that, in this embodiment, the induction coil 50 is wound around the outside of the drawing tube 20 along the circumference of the drawing tube 20. In this embodiment, the metal object 40 is made of magnetically permeable material.

[0045] Other undescribed parts are consistent with the first embodiment and will not be described again here.

[0046] 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 deviate 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. An inductive pull-out faucet, characterized in that: include: The faucet body is provided with a pull-out channel; A drawing tube is movably arranged in the drawing channel and is provided with a water outlet channel; A pull-out head connected to the water outlet end of the pull-out tube; A control valve, used to control the on-off of the water outlet channel; A switch assembly is electrically connected to the control valve, and the switch assembly includes a metal object and an induction coil; wherein the metal object is fixedly arranged relative to one of the faucet body and the pull-out tube, and the induction coil is fixedly arranged relative to the other of the faucet body and the pull-out tube. During the pulling process of the pull-out tube, when the attenuation value or inductance value of the alternating magnetic field generated by the metal object approaching or moving away from the induction coil reaches a preset value, the control valve controls the water outlet channel to be opened or closed.

2. The inductive pull-out faucet according to claim 1, characterized in that: The metal object is a metal sleeve sleeved outside the pull-out tube, and the induction coil is arranged in the faucet body.

3. The inductive pull-out faucet according to claim 2, characterized in that: A magnetic core is arranged in the faucet body, and the magnetic core is arranged in a direction perpendicular to the axis of the pull-out tube. The induction coil is wound around the outer periphery of the magnetic core.

4. The inductive pull-out faucet according to claim 3, characterized in that: The side of the induction coil facing the metal object forms an induction surface.

5. The inductive pull-out faucet according to claim 3, characterized in that: The metal object is made of a damping material, and the damping material is iron, copper or stainless steel.

6. The inductive pull-out faucet according to claim 2, characterized in that: A U-shaped frame is arranged in the faucet body, and the induction coil is wound around the U-shaped frame and cooperates with the metal object to form a U-shaped magnetic loop.

7. The inductive pull-out faucet according to claim 6, characterized in that: The metal object is made of magnetically permeable material.

8. The inductive pull-out faucet according to claim 2, characterized in that: The induction coil is arranged outside the drawing tube along the circumference of the drawing tube.

9. The inductive pull-out faucet according to claim 8, characterized in that: The metal object is made of magnetically permeable material.

10. The inductive pull-out faucet according to claim 1, characterized in that: It also includes a circuit control board and an infrared sensing window.

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