Telescopic mechanism and faucet

Abstract

The telescopic mechanism comprises a body, an upper pipe and a lower pipe, one end of the upper pipe and one end of the lower pipe can be inserted into the body, and the interior of the body is matched with the upper pipe and the lower pipe to form a cavity. The device further comprises a movable rod capable of moving up and down, the upper end of the movable rod can be connected with the upper pipe in a matched mode, the lower end of the movable rod can be connected with the lower pipe in a matched mode, the upper end of the movable rod is further connected with a flexible pipe, the flexible pipe can keep a communication state with the cavity, and the flexible pipe can drive the movable rod to move. The faucet comprises the telescopic mechanism, so that the lower space used by the faucet finally is simple, and meanwhile, the drawing hand feeling is good.

Description

Technical Field

[0001] The utility model relates to a telescopic mechanism and a faucet. Background Art

[0002] If a pull-out faucet needs to be returned to its original position after being pulled out for use, the existing technology generally involves hanging a heavy hammer on the pull-out hose to use gravity to return it. This product causes a mess under the countertop and the large number of things under the countertop may hinder the smoothness of pulling. In other words, in order to ensure the pulling effect, other objects cannot be prevented around the pipe fittings, resulting in a waste of space under the countertop. Currently, there is a new technology that is to install a spring on the pull-out hose and use the compressed force of the spring to drive the return during the pulling process. The advantage is that the product is neat and does not take up space under the countertop, and the installation is relatively convenient. However, this technology will be affected by water pressure, resulting in an uneven return process during the pulling process, and the spring force has to be increased, which brings a new problem that the user's pulling feel is heavy, which gives the user a poor final experience. Summary of the Invention

[0003] In order to solve the above technical problems, the purpose of the present utility model is to provide a telescopic mechanism and a faucet.

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

[0005] A telescopic mechanism includes a main body, an upper tube and a lower tube, one end of the upper tube and the lower tube can be inserted into the main body, and the main body cooperates with the upper tube and the lower tube to form a chamber; it also includes a movable rod that can move up and down, the upper end of the movable rod can be connected to the upper tube, and the lower end of the movable rod can be connected to the lower tube. The upper end of the movable rod is also connected to a flexible tube, and the flexible tube can maintain a communication state with the chamber, and the flexible tube can drive the movable rod to move.

[0006] In the embodiment of the present invention, the upper end of the movable rod is sealed with the inner circumferential wall of the upper tube via a second sealing ring, and the lower end of the movable rod is sealed with the inner circumferential wall of the lower tube via a first sealing ring.

[0007] In an embodiment of the present invention, the upper end of the movable rod includes a joint, and the side wall of the joint is provided with an inlet. The chamber can be connected with the flexible tube through the inlet, and the outer peripheral wall of the joint located at the upper end of the inlet is provided with a second sealing ring that can seal with the inner peripheral wall of the upper tube.

[0008] In an embodiment of the present invention, a first pressure-bearing surface is formed between the first sealing ring and the inner circumferential wall of the lower tube, and a second pressure-bearing surface is formed between the second sealing ring and the inner circumferential wall of the upper tube. The area of the first pressure-bearing surface is not less than the area of the second pressure-bearing surface.

[0009] The utility model also discloses another technical feature:

[0010] A faucet includes the above-mentioned telescopic mechanism, wherein the body includes a curved pipe with one end capable of being located on the outer periphery of the upper pipe, and a pull-out head is provided at the opening of the other end of the curved pipe, and the water inlet end of the pull-out head can be connected to the outlet of the flexible pipe.

[0011] In an embodiment of the present invention, a spring is further included, one end of the spring is connected to the bent pipe, and the other end of the spring is connected to the upper end of the movable rod. The spring can be compressed as the movable rod moves upward.

[0012] In an embodiment of the present invention, the upper tube and the lower tube can be sealed and matched with the inner peripheral wall of the body to form the cavity; a gap is formed between the outer periphery of the movable rod and the inner periphery of the upper tube and the lower tube, and the gap can be connected to the cavity.

[0013] In an embodiment of the present invention, an installation space is provided on the main body, a valve core is provided in the installation space, and a control handle for controlling the valve core is adapted on the main body.

[0014] In an embodiment of the present invention, the water outlet of the valve core can be communicated with the chamber; and at least one water inlet pipe is further included, and the water inlet pipe can be communicated with the water inlet of the valve core.

[0015] In an embodiment of the utility model, the outer periphery of the lower tube is provided with an external thread, the upper end of the external thread can be screwed to the lower end of the main body, a flange is provided at the bottom of the main body, and the outer periphery of the lower tube is also provided with a convex ring, the lower end surface of the flange can abut against the upper end of the convex ring, and also includes a first gasket that can cooperate with the upper end surface of the mounting platform, the flange can be buckled on the outer periphery of the first gasket, the upper end of the first gasket can abut and cooperate with the lower end of the convex ring and / or the lower end surface of the flange; it also includes a locking nut that can be screwed with the external thread, and the upper end of the locking nut is provided with a second gasket that can cooperate with the lower end surface of the mounting platform, and the lower end of the lower tube can be located below the mounting platform.

[0016] The telescopic mechanism and faucet of the utility model have the following beneficial effects: the flexible tube for pulling out does not need to be hung under the table or other places, but is directly wrapped in the body, does not occupy the space under the table, will not be disturbed by other things under the table when pulling out, ensures the cleanliness of the space under the table, and does not have too many pipes, so that the space under the table can be better utilized, and at the same time, the pulling and pulling feel is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. 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 any creative work.

[0018] Figure 1 It is a three-dimensional diagram of the present utility model.

[0019] Figure 2 It is an exploded view of the present utility model.

[0020] Figure 3 It is a partial cross-sectional view of the present utility model.

[0021] Figure 4 It is a schematic diagram of the initial position of the movable rod in the utility model.

[0022] Figure 5 yes Figure 4 Enlarged schematic diagram of point C in the middle.

[0023] Figure 6 yes Figure 4 Enlarged schematic diagram of point D in the middle.

[0024] Figure 7 It is a schematic diagram of the movable rod in the utility model in the rising state.

[0025] Figure 8 yes Figure 7 Enlarged schematic diagram of point E in the middle.

[0026] Figure 9 It is a schematic diagram of an embodiment of a spring in the present invention.

[0027] Figure 10 It is a schematic diagram of an embodiment without a spring in the present utility model.

[0028] Figure 11 It is a schematic diagram of the effective projection area of S2 in the present utility model.

[0029] Figure 12 It is a schematic diagram of the effective projection area of S1 in the present utility model. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention 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 present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] 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 to 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 device or element referred to 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.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0033] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0034] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0035] With reference to the drawings in the specification, a telescopic mechanism includes a main body 10, an upper tube 20 and a lower tube 30, one end of the upper tube and the lower tube can be inserted into the main body, and the upper tube and the lower tube are relatively fixed after being connected with the main body and cannot be moved again when in use, and a chamber A is formed in the main body in cooperation with the upper tube and the lower tube, which can be used to circulate fluid, such as water; it also includes a movable rod 40 that can move up and down, the upper end of the movable rod can be connected with the upper tube, and the lower end of the movable rod can be connected with the lower tube, or it can be said that: the upper end of the movable rod can move in the upper tube, and the lower end of the movable rod can move in the lower tube, and the upper end of the movable rod is also connected to a flexible tube 50, which can be a normal pull-out tube, or a corrugated tube, and the flexible tube can maintain a communication state with the chamber, and the flexible tube can drive the movable rod to move; when the flexible tube drives the movable rod to move axially synchronously, the chamber can maintain a communication state with the flexible tube.

[0036] Preferably, the upper end of the movable rod is sealed with the inner wall of the upper tube via a second sealing ring 21, and the lower end of the movable rod is sealed with the inner wall of the lower tube via a first sealing ring 31. This ensures that water will not flow out from between the upper and lower tubes, thereby ensuring the sealing of the overall structure.

[0037] Furthermore, the upper end of the movable rod includes a joint 41, and the side wall of the joint is provided with an inlet 42. The chamber can be connected with the inside of the flexible tube through the inlet, that is, the fluid in the chamber can flow into the inside of the flexible tube through the inlet, and the outer peripheral wall of the joint located at the upper end of the inlet is provided with a second sealing ring that can be sealed with the inner peripheral wall of the upper tube, so that the fluid can flow into the inside of the flexible tube and cannot flow into the gap B formed between the outer periphery of the flexible tube and the inner periphery of the upper tube.

[0038] Furthermore, a first pressure-bearing surface S1 is formed between the first sealing ring and the inner circumferential wall of the lower tube, and a second pressure-bearing surface S2 is formed between the second sealing ring and the inner circumferential wall of the upper tube. The area of the first pressure-bearing surface is not less than that of the second pressure-bearing surface.

[0039] The utility model also discloses another technical feature:

[0040] A faucet includes the aforementioned telescopic mechanism. The main body comprises a curved tube 11, one end of which can be positioned on the periphery of an upper tube. A pull-out head 12 is provided at the opening at the other end of the curved tube. The water inlet of the pull-out head can be connected to the outlet of the flexible tube, thereby allowing water in the chamber to flow toward the pull-out head and out. The faucet also includes a spring 51, one end of which is matingly connected to the curved tube and the other end of which is matingly connected to the upper end of the movable rod. The spring is capable of being compressed as the movable rod moves upward.

[0041] Preferably, the upper tube and the lower tube can be sealed with the inner peripheral wall of the main body to form the chamber, ensuring that the chamber is a closed space; a gap B is formed between the outer periphery of the movable rod and the inner periphery of the upper tube and the lower tube, and the gap can be connected to the chamber, and the gap can be used for water flow. Of course, the gap refers to the gap above the first sealing ring and below the second sealing ring, so as to prevent water leakage. An installation space 14 is provided on the main body, and a valve core 60 is provided in the installation space. The main body is adapted to be equipped with a control handle 61 for controlling the valve core. The water outlet of the valve core can be connected to the chamber; it also includes at least one water inlet pipe 62, which can be connected to the water inlet hole of the valve core. In one use, there are two water inlet pipes, one for cold water and the other for hot water.

[0042] Furthermore, the outer circumference of the lower tube is provided with an external thread 32, the upper end of the external thread can be screwed to the lower end of the main body, a flange 13 is provided at the bottom of the main body, and the outer circumference of the lower tube is also provided with a convex ring 33, the lower end surface of the flange can abut against the upper end of the convex ring, and also includes a first gasket 71 that can cooperate with the upper end surface of the mounting platform, the flange can be buckled on the outer circumference of the first gasket, and the upper end of the first gasket can abut against the lower end of the convex ring and / or the lower end surface of the flange; it also includes a locking nut 72 that can be screwed with the external thread, and the upper end of the locking nut is provided with a second gasket 73 that can cooperate with the lower end surface of the mounting platform. The lower end of the lower tube can be located below the mounting platform, so that the main body can be fixed in the mounting hole of the mounting platform 100.

[0043] The present invention can solve the above-mentioned problems well mainly through the technical solution of pure hydraulic force or hydraulic force + spring force combination. At the same time, the two water inlet pipes do not need to be pulled out, so that the space under the installation platform can be stacked with items at will, and the space under the platform can be better utilized. In addition, the relationship between the two pressure-bearing surfaces can be changed according to different scenes, and the purpose of lifting or hovering the faucet can be achieved through hydraulic force. The structure of the present invention can mainly include a shell assembly and a movable rod. The shell assembly includes an upper tube, a lower tube and a body. The upper tube and the lower tube are both installed and fixed in the body in a sealed form, and form a hollow channel for water to pass through. The movable rod is arranged in the hollow channel of the shell assembly and can move along the axial direction of the hollow channel. The movable rod is provided with a first end (lower end) and a second end (upper end). The first end contacts the inner wall of the hollow channel of the lower tube to form a movable sealing fit, and the second end contacts the inner wall of the hollow channel of the upper tube to form a movable sealing fit. The inner wall diameter of the lower tube in contact with the first end and the first end form a first pressure-bearing surface S1, and the inner wall diameter of the upper tube in contact with the second end and the second end form a second pressure-bearing surface S2, wherein S1 is not less than S2. When S1 is equal to S2, in order to ensure that the movable rod can move downward smoothly and the pull-out head is reset, a spring is assembled in the body, or it can be said that there is a spring-assisted return solution. A spring is sleeved on the flexible tube, one end of the spring contacts the flexible tube, and the other end contacts the step in the bent tube. Initially, the spring is pre-compressed for a certain stroke and has a certain force value. As the pull-out head is pulled out, the spring is further compressed and the force value increases. At the same time, because the movable rod defaults to downward under the action of water pressure when water is flowing, the pull-out head needs to return to its original position after being pulled out and used, which is driven by the spring plus water pressure. When water is not flowing, the pull-out head is fixed to the end of the bent tube by the initial compression force of the spring. Compared with the traditional pure spring-driven return solution, the initial force value of the spring can be designed to be relatively small, and only needs to be sufficient to overcome the gravity of the pull-out head itself and the friction force during the activity of the entire telescopic mechanism. When S1 is greater than S2, it can be a spring-free assisted return solution, that is, no spring is needed in this embodiment. When water is flowing, the movable rod is downward by default under the action of water pressure. The pull-out head needs to return to its original position after being pulled out for use, which is driven by water pressure. A more perfect solution can be provided with a magnetic attraction device at the contact end of the bent pipe and the pull-out head, so that the pull-out head can fit tightly with the bent pipe, preventing the pull-out head from naturally drooping under the action of its own weight when water is not flowing, causing an unsightly appearance.

[0044] More specifically, for the present utility model: a dynamic seal fit is formed between the first end of the movable rod and the inner wall of the lower pipe to form a first pressure-bearing surface S1, and a dynamic seal fit is formed between the second end of the movable rod and the inner wall of the upper pipe to form a second pressure-bearing surface S2. When water flows into the chamber, a water pressure P is generated in the chamber, thereby generating acting forces F1 and F2 on the effective projection surfaces of S1 and S2 respectively. The effective projection area of SI is the area of the entire hollow inside the lower pipe, and the effective projection area of S2 is the area of the hollow inside the upper pipe minus the area of the hollow inside the joint. The directions of these two acting forces are opposite, and the magnitudes of the force values are determined by S1 and S2 respectively. If S1 > S2, then F1 > F2, and the movable rod moves downward by default; if S1 = S2, then F1 = F2, the force values are balanced, the movable rod is relatively stationary, and it can maintain a hovering state; if S1 < S2, then F1 < F2, and the movable rod moves upward by default. Therefore, based on this characteristic, two different solutions can be designed, namely, the pure hydraulic drive for the pull-out head to return after being pulled out and the solution with the spring as the main part plus the hydraulic auxiliary drive for returning, so as to solve the problem that the existing solution relying on the heavy hammer drive for returning occupies the space below the installation table, resulting in a messy space under the table; or to solve the problem of the heavy feel of the existing solution relying on the spring drive for returning.

[0045] The above description shows and describes the preferred embodiments of the present utility model. As mentioned above, it should be understood that the present 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 inventive concept described herein through the above teachings or the techniques or knowledge in the relevant field. Any modifications and changes made by those skilled in the art without departing from the spirit and scope of the present utility model shall fall within the protection scope of the appended claims of the present utility model.

Claims

1. A telescopic mechanism, characterized in that: It includes a main body, an upper tube and a lower tube, one end of the upper tube and the lower tube can be inserted into the main body, and the main body cooperates with the upper tube and the lower tube to form a chamber; it also includes a movable rod that can move up and down, the upper end of the movable rod can be connected to the upper tube, and the lower end of the movable rod can be connected to the lower tube. The upper end of the movable rod is also connected to a flexible tube, and the flexible tube can maintain a communication state with the chamber, and the flexible tube can drive the movable rod to move.

2. A telescopic mechanism according to claim 1, characterized in that: The upper end of the movable rod is sealed with the inner circumferential wall of the upper tube via a second sealing ring, and the lower end of the movable rod is sealed with the inner circumferential wall of the lower tube via a first sealing ring.

3. A telescopic mechanism according to claim 2, characterized in that: The upper end of the movable rod includes a joint, and the side wall of the joint is provided with an inlet. The chamber can be connected with the flexible tube through the inlet. The outer wall of the joint located at the upper end of the inlet is provided with a second sealing ring that can seal with the inner wall of the upper tube.

4. A telescopic mechanism according to claim 3, characterized in that: A first pressure-bearing surface is formed between the first sealing ring and the inner circumferential wall of the lower tube, and a second pressure-bearing surface is formed between the second sealing ring and the inner circumferential wall of the upper tube. The area of the first pressure-bearing surface is not less than that of the second pressure-bearing surface.

5. A faucet, characterized in that: It comprises a telescopic mechanism as described in any one of claims 1-4, wherein the main body comprises a curved pipe with one end capable of being located on the outer periphery of the upper pipe, a pulling head is provided at the opening of the other end of the curved pipe, and the water inlet end of the pulling head can be connected to the outlet of the flexible pipe.

6. A faucet according to claim 5, characterized in that: It also includes a spring, one end of which is connected to the bent pipe, and the other end of which is connected to the upper end of the movable rod. The spring can be compressed as the movable rod moves upward.

7. A faucet according to claim 5 or 6, characterized in that: The upper tube and the lower tube can be sealed and matched with the inner peripheral wall of the body to form the cavity; a gap is formed between the outer periphery of the movable rod and the inner periphery of the upper tube and the lower tube, and the gap can be connected with the cavity.

8. A faucet according to claim 7, characterized in that: The main body is provided with an installation space, a valve core is provided in the installation space, and the main body is adapted to be provided with a control handle for controlling the valve core.

9. A faucet according to claim 8, characterized in that: The water outlet of the valve core can be communicated with the chamber; and the valve core further comprises at least one water inlet pipe, which can be communicated with the water inlet of the valve core.

10. The faucet according to claim 9, characterized in that: The outer circumference of the lower tube is provided with an external thread, the upper end of the external thread can be screwed to the lower end of the main body, a flange is provided at the bottom of the main body, and the outer circumference of the lower tube is also provided with a convex ring, the lower end surface of the flange can abut against the upper end of the convex ring, and also includes a first gasket that can cooperate with the upper end surface of the mounting platform, the flange can be buckled on the outer circumference of the first gasket, the upper end of the first gasket can abut and cooperate with the lower end of the convex ring and / or the lower end surface of the flange; it also includes a locking nut that can be screwed with the external thread, the upper end of the locking nut is provided with a second gasket that can cooperate with the lower end surface of the mounting platform, and the lower end of the lower tube can be located below the mounting platform.

Images