A straight tube type tube-in-tube pull-out faucet

Abstract

The present invention provides a straight-tube tube-in-tube pull-out faucet, comprising a mounting platform, a switch seat, a cold water inlet pipe, a hot water inlet pipe, a mixed water outlet pipe, a main body, a pull-out assembly, and a connecting assembly, wherein the connecting assembly comprises an inner tube joint and a casing, wherein the inner tube joint comprises a tube tube portion and a convex head portion, wherein a portion of the outer wall of the tube tube portion is screwed into the water outlet end of the mixed water outlet pipe, and the other portion extends into the tube cavity of the pull-out outer tube, and the convex head portion is embedded in the casing, and the top of the outer wall of the casing is screwed into the inner wall of the pull-out inner tube. Compared with the prior art, the present invention has an inner tube joint and a casing in the connecting assembly, and when the pull-out head is used, the water flow generates water pressure to separate the pull-out inner tube and the inner tube joint, so that the pull-out inner tube is stably pushed upward, and at this time, the pull-out outer tube and the mixed water outlet pipe are stationary, and have a strong pressure resistance, so that the pull-out outer tube and the mixed water outlet pipe will not touch the objects below and cause interference, and the use is convenient.

Description

Technical Field

[0001] The invention relates to a straight-tube type tube-in-tube pull-out faucet. Background Art

[0002] At present, there is a pull-out faucet in the prior art, which includes a mounting platform, a switch seat, a cold water inlet pipe, a hot water inlet pipe, a mixed water outlet pipe, a main body, and a pull-out assembly. The water inlet end of the mixed water outlet pipe is connected to the switch seat. The pull-out assembly includes a pull-out head, a pull-out outer tube, a pull-out inner tube, and a spring. The top of the pull-out outer tube is connected to the longitudinal connection part of the mounting platform and the main body. One end of the pull-out inner tube is connected to the pull-out head and the pull-out head can be plugged into the transverse connection part of the main body. The other end of the pull-out inner tube extends into the cavity of the pull-out outer tube through the spring. The problem is that due to the limitation of the aforementioned structure, the flow of water generates water pressure to separate the pull-out inner tube and the inner tube joint, which will cause the pull-out outer tube and the mixed water outlet pipe to move, making it easy for the pull-out outer tube and the mixed water outlet pipe to touch the objects below and cause interference, which is inconvenient to use.

[0003] To this end, the present invention provides a straight-tube type tube-in-tube pull-out faucet. Summary of the invention

[0004] In view of the above problems existing in the prior art, an object of the present invention is to provide a straight-tube tube-in-tube pull-out faucet, which can ensure that the pull-out outer tube and the mixing water outlet pipe will not touch the objects below and cause interference, and is easy to use.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A straight-tube tube-in-tube pull-out faucet, comprising a mounting platform, a switch seat, a cold water inlet pipe, a hot water inlet pipe, a mixed water outlet pipe, a main body, and a pull-out assembly, wherein the water inlet end of the mixed water outlet pipe is connected to the switch seat, the pull-out assembly comprises a pull-out head, a pull-out outer tube, a pull-out inner tube, and a spring, wherein the top of the pull-out outer tube is passed through the mounting platform and connected to the longitudinal connection portion of the main body, one end of the pull-out inner tube is connected to the pull-out head and the pull-out head can be plugged into the transverse connection portion of the main body, and the other end of the pull-out inner tube extends into the cavity of the pull-out outer tube through the spring;

[0007] It also includes a connecting component, which includes an inner pipe joint and a protective tube. The inner pipe joint includes a tube part and a convex head. A part of the outer wall of the tube part is screwed on the water outlet end of the mixed water outlet pipe, and the other part extends into the tube cavity of the pull-out outer tube, and the convex head is embedded in the protective tube. The top of the outer wall of the protective tube is screwed on the inner wall of the pull-out inner tube.

[0008] The straight-tube tube-in-tube pull-out faucet is special in that it also includes a flow-limiting one-way valve, which is embedded in the tube cavity of the tube portion;

[0009] The flow limiting one-way valve cooperates with the water outlet end of the mixing water outlet pipe.

[0010] The straight-tube tube-in-tube pull-out faucet is special in that it also includes a pressure cover, which is arranged in the cavity of the longitudinal connecting part of the main body, and is sleeved on the side wall of the pull-out outer tube and is tightly fitted with the top of the spring.

[0011] The straight-tube tube-in-tube pull-out faucet is special in that it also includes a plurality of first sealing rings, wherein a portion of the first sealing rings are sleeved on the annular groove portion of the side wall of the tube portion, and the outer side wall of the first sealing ring is in contact with the inner side wall of the pull-out outer tube;

[0012] Another part of the first sealing ring is sleeved on the convex head, and the outer side wall of the first sealing ring is in contact with the inner side wall of the casing.

[0013] The straight tube type tube-in-tube pull-out faucet is special in that: the protective tube comprises an annular tube body and an extended tube wall portion extending from the top of the annular tube body, and the thickness of the extended tube wall portion is less than the thickness of the annular tube body;

[0014] The annular cylinder body and the extended cylinder wall portion are both embedded in the tube cavity of the pull-out outer tube, the bottom annular surface of the annular cylinder body abuts against the top annular surface of the tube portion, the convex head portion extends into the annular cylinder body, and the outer side wall of the extended cylinder wall portion is screwed into the inner side wall of the pull-out inner tube.

[0015] The straight tube type tube-in-tube pull-out faucet is special in that it also includes a plurality of second sealing rings, two adjacent second sealing rings are alternately sleeved on the annular groove portion of the annular cylinder, and the outer side wall of the second sealing ring is in contact with the inner side wall of the pull-out outer tube.

[0016] As described above, the straight-tube-in-tube pull-out faucet according to the present invention has the following beneficial effects:

[0017] After utilizing the above-mentioned straight-tube tube-in-tube pull-out faucet, compared with the prior art, due to the adoption of such a structure, the arrangement of the inner tube joint and the protective tube in the connecting assembly, when the pull-out head is used, combined with the spring, the flow of water generates water pressure to separate the pull-out inner tube and the inner tube joint, so that the pull-out inner tube is pushed upward stably, and at this time, the pull-out outer tube and the mixed water outlet pipe are stationary, with strong pressure resistance, thus ensuring that the pull-out outer tube and the mixed water outlet pipe will not touch the objects below and cause interference, and the use is convenient.

[0018] The present invention will be further described below in conjunction with specific implementation modes. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional diagram of a straight-tube tube-in-tube pull-out faucet;

[0020] Figure 2 It is a partial structural cross-sectional view of a straight-tube-in-tube pull-out faucet in which the pull-out head is in an unused state;

[0021] Figure 3 for Figure 2 A magnified view of the structure at center A;

[0022] Figure 4 The present invention is a partial structural cross-sectional view of a pull-out head of a straight-tube-in-tube pull-out faucet in use. DETAILED DESCRIPTION

[0023] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0024] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that the present invention can be implemented, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects that the present invention can produce and the purposes that can be achieved. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of the relative relationship should also be regarded as the scope of the implementation of the present invention without substantial changes in the technical content. The specific structure can be described with reference to the drawings of the patent application.

[0025] In the following embodiments, the left side of the paper is the left direction, the right side of the paper is the right direction, the upper side of the paper is the upper direction, the lower side of the paper is the lower direction, the front side perpendicular to the paper is the front direction, and the rear side perpendicular to the paper is the rear direction.

[0026] The present invention provides a straight tube type tube-in-tube pull-out faucet, please refer to Figure 1 , Figure 2 , Figure 3 as well as Figure 4As shown, it includes a mounting platform 1, a switch seat 2, a cold water inlet pipe 3, a hot water inlet pipe 4, a mixed water outlet pipe 5, a main body 6, and a pull-out assembly 7. The water inlet end of the mixed water outlet pipe 5 is connected to the switch seat 2. The pull-out assembly 7 includes a pull-out head 70, a pull-out outer tube 71, a pull-out inner tube 72, and a spring 73. The top of the pull-out outer tube 71 is penetrated through the mounting platform 1 and connected to the longitudinal connection part 60 of the main body 6. One end of the pull-out inner tube 72 is connected to the pull-out head 70 and the pull-out head 70 can be plugged into the transverse connection part 61 of the main body 6. The other end of the pull-out inner tube 72 extends into the cavity of the pull-out outer tube 71 through the spring 73.

[0027] It also includes a connection assembly 8, which includes an inner pipe joint 80 and a protective tube 81. The inner pipe joint 80 includes a tube portion 80a and a convex head 80b. A portion of the outer wall of the tube portion 80a is screwed to the water outlet end of the mixed water outlet pipe 5, and the other portion extends into the tube cavity of the pull-out outer tube 71. The convex head 80b is embedded in the protective tube 81, and the top of the outer wall of the protective tube 81 is screwed to the inner wall of the pull-out inner tube 72. It should be noted that since the pull-out inner tube 72 is pullably arranged in the tube cavity of the pull-out outer tube 71, and the main body 6 has a transverse connection portion 61 (straight tube type), the present application is referred to as a straight tube type tube-in-tube pull-out faucet.

[0028] When in use, hold the pull-out head 70 of the present application to disconnect it from the main body 6. Under the action of the spring 73 and the connecting assembly 8, the flow of water generates water pressure to separate the pull-out inner tube 72 and the inner tube joint 80, so that the pull-out inner tube 72 is pushed upward stably. At this time, the pull-out head 70 can be pulled away from the main body 6 for use; after use and releasing the hand, the pull-out head 70 will be easily inserted into the horizontal connecting portion 61 of the main body 6, which is easy to use.

[0029] Combination Figure 2 and Figure 3 As shown, in this embodiment, a flow limiting one-way valve 9 is also included, and the flow limiting one-way valve 9 is embedded in the barrel cavity of the barrel portion 80a;

[0030] The flow-limiting one-way valve 9 cooperates with the water outlet end of the mixed water outlet pipe 5. The flow-limiting one-way valve 9 is provided to control the water flow rate and has a flow-limiting effect.

[0031] Combination Figure 2 or Figure 4 As shown, in this embodiment, a pressure cover 10 is also included. The pressure cover 10 is arranged in the cavity of the longitudinal connecting portion of the main body 6. The pressure cover 10 is sleeved on the side wall of the pull-out outer tube 71 and is tightly fitted with the top of the spring 73.

[0032] Combination Figure 2 and Figure 3As shown, in this embodiment, it also includes a plurality of first sealing rings 11, wherein a portion of the first sealing rings 11 is sleeved on the annular groove portion of the side wall of the tube portion, and the outer side wall of the first sealing ring 11 is attached to the inner side wall of the drawable outer tube 71;

[0033] Another part of the first sealing ring 11 is sleeved on the convex portion 80 b , and the outer wall of the first sealing ring 11 is in contact with the inner wall of the protective tube 81 .

[0034] Combination Figure 2 and Figure 3 As shown, in this embodiment, the protective tube 81 includes an annular body 81c and an extended wall portion 81d extending from the top of the annular body 81c, and the thickness of the extended wall portion 81d is less than the thickness of the annular body 81c;

[0035] The annular cylinder body and the extended cylinder wall portion 81d are both embedded in the tube cavity of the pull-out outer tube 71, the bottom annular surface of the annular cylinder body 81c abuts against the top annular surface of the tube portion 80a, the convex head portion 80b extends into the annular cylinder body 81c, and the outer side wall of the extended cylinder wall portion 81d is screwed into the inner side wall of the pull-out inner tube 72.

[0036] Combination Figure 2 and Figure 3 As shown, in this embodiment, a plurality of second sealing rings 12 are further included, and two adjacent second sealing rings 12 are alternately sleeved on the annular groove portion of the annular cylinder 81 c , and the outer side wall of the second sealing ring 12 is in contact with the inner side wall of the pull-out outer tube 71 .

[0037] As described above, the straight-tube-in-tube pull-out faucet according to the present invention has the following beneficial effects:

[0038] After utilizing the above-mentioned straight-tube tube-in-tube pull-out faucet, compared with the prior art, due to the adoption of such a structure, the arrangement of the inner tube joint and the protective tube in the connecting assembly, when the pull-out head is used, combined with the spring, the flow of water generates water pressure to separate the pull-out inner tube and the inner tube joint, so that the pull-out inner tube is pushed upward stably, and at this time, the pull-out outer tube and the mixed water outlet pipe are stationary, with strong pressure resistance, thus ensuring that the pull-out outer tube and the mixed water outlet pipe will not touch the objects below and cause interference, and the use is convenient.

[0039] In summary, the present invention effectively overcomes various shortcomings of the prior art and has high industrial utilization value.

[0040] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A straight-tube tube-in-tube pull-out faucet, comprising a mounting platform, a switch seat, a cold water inlet pipe, a hot water inlet pipe, a mixed water outlet pipe, a main body, and a pull-out assembly, wherein the water inlet end of the mixed water outlet pipe is connected to the switch seat, the pull-out assembly comprises a pull-out head, a pull-out outer tube, a pull-out inner tube, and a spring, wherein the top of the pull-out outer tube is passed through the mounting platform and connected to the longitudinal connection portion of the main body, one end of the pull-out inner tube is connected to the pull-out head and the pull-out head can be plugged into the transverse connection portion of the main body, and the other end of the pull-out inner tube extends into the cavity of the pull-out outer tube through the spring; characterized in that: It also includes a connecting component, which includes an inner pipe joint and a protective tube. The inner pipe joint includes a tube part and a convex head. A part of the outer wall of the tube part is screwed on the water outlet end of the mixed water outlet pipe, and the other part extends into the tube cavity of the pull-out outer tube, and the convex head is embedded in the protective tube. The top of the outer wall of the protective tube is screwed on the inner wall of the pull-out inner tube.

2. The straight-tube-in-tube pull-out faucet according to claim 1, characterized in that: It also includes a flow-limiting one-way valve, which is embedded in the barrel cavity of the barrel portion; The flow limiting one-way valve cooperates with the water outlet end of the mixing water outlet pipe.

3. The straight-tube-in-tube pull-out faucet according to claim 1, characterized in that: It also includes a gland, which is arranged in the cavity of the longitudinal connecting part of the main body, and is sleeved on the side wall of the pull-out outer tube and is tightly fitted with the top of the spring.

4. The straight-tube-in-tube pull-out faucet according to claim 1, 2 or 3, characterized in that: It also includes a plurality of first sealing rings, wherein a portion of the first sealing rings are sleeved on the annular groove portion of the side wall of the tube portion, and the outer side wall of the first sealing ring is in contact with the inner side wall of the drawable outer tube; Another part of the first sealing ring is sleeved on the convex head, and the outer side wall of the first sealing ring is in contact with the inner side wall of the casing.

5. The straight-tube-in-tube pull-out faucet according to claim 1, 2 or 3, characterized in that: The casing comprises an annular body and an extended wall portion extending from the top of the annular body, wherein the thickness of the extended wall portion is smaller than the thickness of the annular body; The annular cylinder body and the extended cylinder wall portion are both embedded in the tube cavity of the pull-out outer tube, the bottom annular surface of the annular cylinder body abuts against the top annular surface of the tube portion, the convex head portion extends into the annular cylinder body, and the outer side wall of the extended cylinder wall portion is screwed into the inner side wall of the pull-out inner tube.

6. The straight-tube-in-tube pull-out faucet according to claim 5, characterized in that: It also includes a plurality of second sealing rings, wherein two adjacent second sealing rings are alternately sleeved on the annular groove of the annular cylinder, and the outer side wall of the second sealing ring is in contact with the inner side wall of the drawable outer tube.

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