Noise reduction structure and anti-rushing-out structure of heavy-hammer-free pull-out faucet and heavy-hammer-free pull-out faucet

Abstract

The invention provides a noise reduction structure of a counter-weight-free drawing faucet. The noise reduction structure comprises a supporting pipe, a drawing pipe, an elastic reset piece and a lining. The supporting pipe is connected with the faucet body through the middle connecting piece. The elastic reset piece is sleeved outside the drawing pipe, one end of the elastic reset piece is a fixed end, and the other end of the elastic reset piece is connected with the drawing pipe to form a linkage end; the lining is arranged between the inner wall of the supporting pipe and the outer wall of the elastic reset piece. The lining is provided with a contraction joint along the inner wall of the supporting pipe in the direction of the bending radius of the supporting pipe from outside to inside, so that when the lining is arranged in the supporting pipe in a penetrating mode, the parts, on the two sides of the contraction joint, of the lining gather towards the closing direction of the contraction joint. The invention further provides an anti-rushing-out structure of the heavy-hammer-free pull-out faucet and the heavy-hammer-free pull-out faucet.

Description

Technical Field

[0001] The invention relates to a water outlet device, in particular to a pull-out faucet. Background Art

[0002] Faucets are something that families come into contact with almost every day in their daily lives, and the frequent use frequency has increased people's demand for faucets. With the development of the bathroom industry, there are more and more styles of faucets, and the water outlet of the faucet is no longer limited to the traditional fixed way of discharging water. At present, pull-out faucets have been widely used by people, and the convenience of being able to be pulled out has brought many conveniences to people. Existing pull-out faucets all rely on components such as gravity hammers arranged under the faucet body. At the same time, in order to ensure the pulling range, the pull-out hose needs to be lengthened, which increases the production cost of the faucet, and the gravity hammer is generally arranged under the washbasin. During the process of pulling out the pipe, it is easy to interfere with other components, resulting in the situation that the inner pipe of the pull-out pipe is stuck, which brings great inconvenience to people's use.

[0003] For this reason, there is a pull-out faucet without a weight in the prior art. The pull-out tube is used for water inlet by setting a fixed inner tube, and the pull-out tube is set on the outer side of the inner tube. When the pull-out tube is pulled out, the spring will be squeezed to accumulate elastic reset force, so that the pull-out tube can be automatically reset under the action of the elastic reset force after the pull-out tube is released, so as to achieve the purpose of no weight. However, the traditional inner tube is directly locked on the faucet body by a thread, and the support tube can be adjusted by swinging relative to the faucet body, so that when the support tube swings, the inner tube will be driven to swing together, but the inner tube is fixed on the faucet body, so that the inner tube will be twisted during the swinging process, or the threaded connection between the inner tube and the faucet body will be released. In addition, the pull-out faucet without a weight is easy to contact with the support tube during the pulling process because of the existence of the spring. Since both are made of metal, the friction process will produce sharp and piercing noise, affecting the user's experience. In addition, because the counterweight is cancelled and the user's pull-out feel is taken into account, the elastic force of the spring cannot be set too large, otherwise the user needs a lot of effort to pull the water outlet device. However, this method also makes it easy for the water outlet device to be driven by the water flow and detach from the support pipe under water pressure, especially high pressure. Summary of the invention

[0004] The main technical problem to be solved by the present invention is to provide a noise reduction structure of a pull-out faucet without a heavy hammer, which can reduce the noise generated during the pulling process.

[0005] Another major technical problem to be solved by the present invention is to provide an anti-flushing structure for a pull-out faucet without a heavy hammer, which can prevent the water outlet component from being flushed out under high water pressure.

[0006] In order to solve the above technical problems, the present invention provides a noise reduction structure of a pull-out faucet without a heavy hammer, comprising: a support pipe, a pull-out pipe, an elastic reset member and an inner liner;

[0007] The support tube is connected to the faucet body through an intermediate connector; the elastic reset member is sleeved outside the pull-out tube, one end of which is a fixed end and the other end is connected to the pull-out tube to form a linkage end; the lining is arranged between the inner wall of the support tube and the outer wall of the elastic reset member;

[0008] The liner is provided with a contraction seam along the inner wall of the support tube from the outside to the inside of the bending radius of the support tube, so that when the liner is inserted into the support tube, the parts of the liner on both sides of the contraction seam gather in the direction of closing the contraction seam.

[0009] The present invention also provides a noise reduction structure of a pull-out faucet without a heavy hammer, comprising: a support pipe, a pull-out pipe, an elastic reset member and an inner liner;

[0010] The support tube is connected to the faucet body through an intermediate connector; the elastic reset member is sleeved outside the pull-out tube, one end of which is a fixed end and the other end is connected to the pull-out tube to form a linkage end; the lining is arranged between the inner wall of the support tube and the outer wall of the elastic reset member;

[0011] The liner is provided with a shrinkage seam along the inner wall of the support tube from the outside to the inside of the bending radius of the support tube, so that when the liner is inserted into the support tube, the inner side of the liner in the direction of the bending radius of the support tube has a greater bending curvature than the outer side.

[0012] In a preferred embodiment, the shrinkage seam has a structure in which the width gradually increases from the outside to the inside along the bending radius of the support tube.

[0013] In a preferred embodiment: the lining includes a main trunk and ribs connected to both sides of the main trunk, the ribs and the main trunk form a cylindrical structure; the ribs are provided with the shrinkage seams along the length direction of the main trunk.

[0014] In a preferred embodiment, the elastic return member is a spring, and the width of the contraction seam after gathering is smaller than the spring wire diameter.

[0015] In a preferred embodiment: when the liner is in a released state, the outer shape of the liner is a straight herringbone shape, and the ribs on both sides of the liner are spaced apart at the opposite ends to form a gap.

[0016] In a preferred embodiment: when the liner is inserted into the support tube, the trunk is in contact with the inner wall of the support tube.

[0017] In a preferred embodiment: the material of the lining is plastic or hard rubber.

[0018] The present invention also provides a weightless pull-out faucet, comprising the noise reduction structure and water outlet assembly as described above;

[0019] One end of the pulling tube is fixedly connected to the water outlet assembly, and the other end extends radially outward to form a first limiting surface. The inner wall of one end of the support tube facing the water outlet assembly extends radially inward to form a second limiting surface, and the elastic reset member is connected between the first limiting surface and the second limiting surface.

[0020] When the water outlet assembly drives the pulling tube to extend in a direction away from the supporting tube, the first limiting surface squeezes the elastic reset component to accumulate elastic reset force.

[0021] In a preferred embodiment: the intermediate connecting member is fixedly connected to the faucet body, and the support tube and the intermediate connecting member are rotatably connected.

[0022] In a preferred embodiment: it also includes an inner tube; the inner tube is inserted into the pull-out tube, and the end of the inner tube is connected to an inner tube joint, a limiting space for clamping the inner tube joint is formed between the intermediate connecting piece and the faucet body, and the limiting space provides a limiting force to the inner tube along the length direction of the inner tube.

[0023] In a preferred embodiment: a first limiting member is disposed at the end of the pulling tube, and the first limiting member extends radially outwardly along the pulling tube to form the first limiting surface.

[0024] In a preferred embodiment: the pull-out tube is fixedly connected to the first limit member via a joint; the joint includes an insertion portion inserted into the pull-out tube, and a connecting portion located outside the pull-out tube, the connecting portion extends radially outward relative to the insertion portion, the outer wall of the connecting portion is fixed to the first limit member via threads, and a Y-shaped sealing ring is provided between the inner wall of the connecting portion and the outer wall of the inner tube.

[0025] In a preferred embodiment: a second limiting member is disposed inside one end of the support tube facing the water outlet assembly, and the second limiting member extends radially inward to form the second limiting surface.

[0026] In a preferred embodiment: the second limiting member is provided with a clearance opening for the pulling tube to move.

[0027] In a preferred embodiment: the hardness of the inner tube is 80-95A, and the hardness of the pull-out tube is 70-85A.

[0028] The present invention also provides an anti-blowout structure of a pull-out faucet without a heavy hammer, comprising: a faucet body, an inner tube, a support tube, an elastic reset member, a pull-out tube and a water outlet assembly;

[0029] The support tube is connected to the faucet body through an intermediate connector; the elastic reset member is sleeved outside the pull-out tube, one end of which is a fixed end and the other end is connected to the pull-out tube to form a linkage end;

[0030] One end of the inner tube is the water inlet end, and the other end is provided with a water outlet buffer joint; the water outlet buffer joint is used to change the water flow along the axial direction of the inner tube to the water outlet along the lateral direction of the inner tube.

[0031] In a preferred embodiment: one end of the water outlet buffer joint along the axial direction of the inner tube is a closed end, and a water outlet is provided on the side wall along the radial direction of the inner tube.

[0032] In a preferred embodiment: there are multiple water outlets, which are spaced apart along the circumference of the water outlet buffer joint.

[0033] In a preferred embodiment: the outer wall of the water outlet buffer joint is an arc surface.

[0034] The present invention also provides a weightless pull-out faucet, comprising a faucet body and the anti-rush-out structure as described above;

[0035] One end of the pulling tube is fixedly connected to the water outlet assembly, and the other end extends radially outward to form a first limiting surface. The inner wall of one end of the support tube facing the water outlet assembly extends radially inward to form a second limiting surface, and the elastic reset member is connected between the first limiting surface and the second limiting surface.

[0036] When the water outlet assembly drives the pulling tube to extend in a direction away from the supporting tube, the first limiting surface squeezes the elastic reset component to accumulate elastic reset force.

[0037] In a preferred embodiment: the intermediate connecting member is fixedly connected to the faucet body, and the support tube and the intermediate connecting member are rotatably connected.

[0038] In a preferred embodiment: it also includes an inner tube; the inner tube is inserted into the pull-out tube, and the end of the inner tube is connected to an inner tube joint, a limiting space for clamping the inner tube joint is formed between the intermediate connecting piece and the faucet body, and the limiting space provides a limiting force to the inner tube along the length direction of the inner tube.

[0039] In a preferred embodiment: a first limiting member is disposed at the end of the pulling tube, and the first limiting member extends radially outwardly along the pulling tube to form the first limiting surface.

[0040] In a preferred embodiment: the pull-out tube is fixedly connected to the first limit member via a joint; the joint includes an insertion portion inserted into the pull-out tube, and a connecting portion located outside the pull-out tube, the connecting portion extends radially outward relative to the insertion portion, the outer wall of the connecting portion is fixed to the first limit member via threads, and a Y-shaped sealing ring is provided between the inner wall of the connecting portion and the outer wall of the inner tube.

[0041] In a preferred embodiment: a second limiting member is disposed inside one end of the support tube facing the water outlet assembly, and the second limiting member extends radially inward to form the second limiting surface.

[0042] In a preferred embodiment: the second limiting member is provided with a clearance opening for the pulling tube to move.

[0043] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0044] The present invention provides a noise reduction structure for a weightless pull-out faucet. By providing an inner liner between the spring and the support tube, it is possible to avoid the spring directly rubbing against the support tube during pull-out and overcharging to produce sharp noise. By setting the material of the inner liner to plastic or hard rubber, the noise generated by the friction between the inner liner and the spring can be further reduced, thereby improving the user experience. In addition, the inner liner is provided with a contraction seam along the inner wall of the support tube, from the outside to the inside of the bending radius of the support tube, so that when the inner liner is inserted into the support tube, the parts of the inner liner on both sides of the contraction seam gather the inner liner in the direction of closing the contraction seam, thereby allowing the arc-shaped support tube to be inserted, bend along the curvature of the support tube, and perfectly fit the inner wall of the support tube.

[0045] The present invention provides an anti-flushing structure for a weightless pull-out faucet, in which a water outlet buffer joint is arranged on the water outlet side of an inner tube, so that the water flow that flows along the axial direction of the inner tube can be changed to water outlet along the lateral direction of the inner tube, thereby greatly reducing the impact force of the water flow on the water outlet component. Therefore, even if high-pressure and large-flow water is discharged, the impact force is not sufficient to overcome the elastic force of the spring, and the water outlet component will not be flushed out by the water flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a schematic diagram of a preferred embodiment 1 of the present invention;

[0047] Figure 2 It is an exploded view of a preferred embodiment 1 of the present invention;

[0048] Figure 3 It is a cross-sectional view of a preferred embodiment 1 of the present invention;

[0049] Figure 4 A partial cross-sectional view of a preferred embodiment 1 of the present invention;

[0050] Figure 5 It is a partial cross-sectional view of another position in the preferred embodiment 1 of the present invention;

[0051] Figure 6 This is a schematic diagram of the extraction state in the preferred embodiment 1 of the present invention;

[0052] Figure 7 A partial cross-sectional view of a preferred embodiment 2 of the present invention;

[0053] Figure 8 It is an exploded view of a preferred embodiment 3 of the present invention;

[0054] Fig. 9 It is a three-dimensional diagram of the liner in the preferred embodiment 3 of the present invention;

[0055] Fig.10 It is a side view of the liner in the preferred embodiment 3 of the present invention;

[0056] Fig.11 A partial cross-sectional view of a curved liner according to a preferred embodiment 3 of the present invention;

[0057] Fig.12 It is a cross-sectional view of a preferred embodiment 3 of the present invention;

[0058] Fig.13 It is a cross-sectional view of the preferred embodiment 3 of the present invention when the liner is not inserted into the support tube;

[0059] Fig.14 A cross-sectional view of a preferred embodiment 3 of the present invention when the liner is inserted into the support pipe;

[0060] Fig.15 It is a cross-sectional view of a preferred embodiment 4 of the present invention;

[0061] Fig.16 It is a partial cross-sectional view of preferred embodiment 4 of the present invention. DETAILED DESCRIPTION

[0062] 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; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0063] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0064] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a wall-mounted 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 components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] Example 1

[0066] refer to Figure 1-Figure 6 This embodiment provides a weightless pull-out faucet, comprising: a faucet body 1, an inner tube 2, a support tube 3, an inner tube joint 4, an intermediate connector 5 and a water outlet assembly 6;

[0067] The support tube 3 is connected to the faucet body through an intermediate connecting piece 5, and the intermediate connecting piece 5 is fixedly connected to the faucet body, and the support tube 3 and the intermediate connecting piece 5 are rotatably connected; in this way, the support tube 3 can rotate relative to the faucet body 1, thereby realizing the swing function of the support tube 3, and the support tube 3 can be swung to the required position to discharge water.

[0068] The inner tube 2 is inserted into the support tube 3, and the inner tube joint 4 is connected to the end of the inner tube 2. A limiting space 7 for clamping the inner tube joint 4 is formed between the intermediate connector 5 and the faucet body 1. The limiting space 7 provides a limiting force to the inner tube 2 along the length direction of the inner tube 2. Since the intermediate connector 5 only provides a limiting force to the inner tube 2 along the length direction of the inner tube 2, the inner tube 2 is not restricted in the direction around its own axis. In this way, when the support tube 3 rotates, the inner tube 2 will also rotate with the support tube 3. In addition, the inner tube 2 is clamped and fixed by the intermediate connector 5 and the faucet body 1. The intermediate connector 5 and the faucet body 1 remain fixed during the rotation of the support tube 3. Therefore, no matter how the support tube 3 and the inner tube 2 rotate, the limiting space 7 for clamping the inner tube 2 will not be affected, so the inner tube 2 will not be loosened due to the rotation. In addition, since the inner tube 2 rotates with the support tube 3, it can also avoid the relative rotation between the support tube 3 and the inner tube 2 causing the inner tube 2 to twist.

[0069] The inner tube 2 is used for conducting water, and therefore the inner tube joint 4 in the present embodiment comprises a first portion 41 inserted into the faucet body 1, a second portion 42 inserted into the intermediate connecting piece 5, and a third portion 43 located between the first portion 41 and the second portion 42; the outer wall of the third portion 43 extends radially outward to form a flange 44 disposed in the limiting space 7; in this way, the limiting space 7 achieves the limitation of the inner tube joint 4 along the length direction of the inner tube 2 by clamping the flange 44.

[0070] To realize the water flow of the inner tube 2, the first part 41 is provided with a water inlet channel connected to the inner tube 2 along the axial direction, and a sealing ring 411 is provided on the outer wall of the first part 41. In this way, cold water or hot and cold mixed water can only flow into the inner tube 2 through the water inlet channel, and then flow out from the front end of the inner tube 2 and enter the water outlet assembly 6 to flow out.

[0071] At the same time, in order to fix the relative position of the inner tube 2 and the inner tube joint 4, the inner wall of the first part 41 protrudes radially inward to form a limiting wall 412, and the inner tube 2 abuts against the limiting wall 412 after passing through the second part 42 and the third part 43. In addition, the inner tube 2 and the inner tube joint 4 are fixed by riveting, clamping or welding. In this way, the fixing between the inner tube 2 and the inner tube joint 4 is completed, and the setting of the water inlet waterway of the inner tube 2 is realized.

[0072] Since the present embodiment provides a pull-out faucet, a pull-out pipe assembly 8 is also required. The pull-out pipe assembly 8 in the present embodiment is inserted into the support pipe 3 and sleeved outside the inner pipe 2. One end of the pull-out pipe assembly 8 is fixedly connected to the water outlet assembly 6, and the other end extends radially outward to form a first limit surface. The inner wall of one end of the support pipe 3 toward the water outlet assembly 6 extends radially inward to form a second limit surface. An elastic reset member 9 is connected between the first limit surface and the second limit surface. When the water outlet assembly 6 drives the pull-out pipe assembly 8 to extend in a direction away from the support pipe 3, the first limit surface squeezes the elastic reset member 9 to accumulate elastic reset force. The elastic reset member 9 is preferably a spring in the present embodiment. Since the pull-out pipe assembly 8 is sleeved outside the inner pipe 2, the water flowing out of the inner pipe 2 will directly enter the pull-out pipe assembly 8. Since the water outlet assembly 6 is fixed to the pull-out pipe assembly 8, the water flowing into the pull-out pipe assembly 8 will eventually flow out through the water outlet assembly 6, completing the entire water outlet process. In addition, through the provision of the elastic reset member 9, after the pull-out tube assembly 8 is extended, the elastic reset member 9 accumulates elastic reset force. Therefore, as long as the water outlet assembly 6 is loosened, the pull-out tube can be recovered under the reset force of the elastic reset member 9, achieving the effect of automatic reset without the need for a heavy hammer.

[0073] Specifically, the pulling tube assembly 8 in this embodiment includes a pulling tube 81 and a first limiting member 82 . The first limiting member 82 is connected to the end of the pulling tube 81 and extends radially outward along the pulling tube 81 to form the first limiting surface.

[0074] In order to connect the first stopper 82 and the drawing tube 81, the drawing tube 81 is fixedly connected to the first stopper 82 through a joint 83; the joint 83 includes an insertion portion 831 inserted into the drawing tube 81, and a connection portion 832 located outside the drawing tube 81. The insertion portion 831 and the drawing tube 81 are interference fit, so that the insertion portion 831 and the drawing tube 81 are fixedly connected. The insertion portion 831 and the drawing tube 81 can also be fixed by riveting or clamping. The connection portion 832 extends radially outward relative to the insertion portion 831, and the outer wall of the connection portion 832 is fixed to the first stopper 82 by threads, so that the connection portion 832 and the first stopper 82 are fixedly connected. In addition, a Y-shaped sealing ring 84 is provided between the inner wall of the connection portion 832 and the outer wall of the inner tube 2. In this way, water flowing into the drawing tube 81 can be prevented from flowing out of the gap between the drawing tube 81 and the inner tube 2.

[0075] In order to form the second limiting surface, a second limiting member 31 is provided in one end of the support tube 3 facing the water outlet assembly 6, and the second limiting member 31 extends radially inward to form the second limiting surface. The second limiting member 31 is provided with a clearance opening for the pull-out tube 81 to move. In this way, the movement of the pull-out tube 81 will not be affected by the second limiting member 31.

[0076] In order to install the second limiting member 31, a bushing 32 is used in this embodiment. The outer surface of the bushing 32 is provided with a plurality of ribs 321 at intervals along the circumferential direction. When the bushing 32 is inserted into the clearance opening of the second limiting member 31, the ribs 321 squeeze the second limiting member 31 from the inner wall of the clearance opening, thereby fixing the second limiting member 31 and the support tube 3 together.

[0077] At the same time, in order to improve the feel of the support tube 3 when rotating, a stop block 33 is also arranged between the support tube 3 and the intermediate connecting member 5. The stop block 33 can increase the contact area between the support tube 3 and the intermediate connecting surface, thereby increasing the damping of the support tube 3 when rotating relative to the intermediate connecting member 5.

[0078] In order to install the stop block 33 , the outer wall of the intermediate connecting member 5 is recessed radially inward to form a circle of groove 51 , and the stop block 33 is placed in the groove 51 and fixedly connected to the support tube 3 via a fixing bolt 34 .

[0079] In the above-mentioned weightless pull-out faucet, the support tube 3 is connected to the faucet body 1 through the intermediate connection piece 5. The intermediate connection piece 5 is fixedly connected to the faucet body 1 and is rotatably connected to the support tube 3, so that the support tube 3 can rotate around the faucet body 1 to achieve the swing of the support tube 3. In addition, since the intermediate connection piece 5 and the support tube 3 provide a limiting force to the inner tube 2 along the length direction of the inner tube 2, it will only limit the movement of the inner tube 2 along the length direction, but will not limit the rotation of the inner tube 2 around the length direction. Therefore, when the support tube 3 rotates, the inner tube 2 will rotate with it. It can avoid the inner tube 2 from twisting when the support tube 3 rotates, or the inner tube 2 from loosening with the faucet body.

[0080] Finally, in this embodiment, the hardness of the inner tube 2 is 80-95A, and the hardness of the pull-out tube 81 is 70-85A. After analysis of test data, pulling is smoother and less stuck within this hardness range. In addition, both the pull-out tube and the inner tube are made of PEX (cross-linked polyethylene) tube. The tube made of this material has a smaller friction coefficient, which improves the smoothness of pulling.

[0081] In this embodiment, the smoothness of drawing of the inner tube 2 and the drawing tube 81 with different hardness was tested, and the test results are shown in the following table:

[0082]

[0083] Example 2

[0084] refer to Figure 7 The difference between this embodiment and the first embodiment is that the second stopper 31 in the first embodiment is fixed by the bushing 32. In this embodiment, the second stopper 31 is directly fixed to the support pipe 3 by means of screws 35. A horn joint 61 is provided on the side of the water outlet assembly 6 facing the support pipe 3. The cylindrical part of the horn joint 61 is connected to the water outlet body 62 in the water outlet assembly 6 by threads. The contraction part of the horn joint 61 is inserted into the second stopper 31 and riveted by the sleeve 36 and the drawing tube 81.

[0085] Example 3

[0086] refer to Figure 8-Figure 12 In this embodiment, in order to reduce the noise caused by friction between the elastic reset member 9 (specifically a spring) and the inner wall of the support tube 3 during the pulling process, a layer of lining 10 is provided between the inner wall of the support tube 3 and the outer wall of the spring 9. As a result, the spring 9 will not directly contact the inner wall of the support tube 3, avoiding the sharp noise caused by metal contact. As long as the material of the lining 10 is set to be relatively soft, such as plastic or hard rubber, the noise generated by the friction between the spring 9 and the lining 10 can be further reduced. This greatly improves the silent performance during the pulling process and optimizes the user experience.

[0087] Since the inner side and the outer side of the support tube 3 have different curvatures, the liner 10 needs to have different curvatures on both sides to fit with the inner wall of the support tube 3. Therefore, in this embodiment, the liner 10 is provided with a contraction seam 103 along the inner wall of the support tube 3 from the outer side to the inner side of the bending radius of the support tube 3, so that when the liner 10 is inserted into the support tube 3, the parts of the liner 10 on both sides of the contraction seam 103 gather in the direction of closing the contraction seam 103. After gathering, when the liner 10 is inserted into the support tube 3, the inner side of the liner 10 in the direction of the bending radius of the support tube 3 has a greater curvature than the outer side. This ensures that the liner 10 can fit with the inner wall of the support tube 3.

[0088] In this embodiment, the shrinkage seam 103 has a structure in which the width gradually increases from the outside to the inside along the bending radius of the support tube 3. Therefore, the curvature of the support tube 3 gradually increases from the outside to the inside of the support tube 3. Therefore, the width of the shrinkage seam 103 is also gradually increased from the outside to the inside, so that the curvature of the liner 10 can be gradually increased from the outside to the inside, and the inner wall of the support tube 3 can be better fitted.

[0089] In order to set the above-mentioned contraction seam 103, the inner liner 10 includes a trunk 101 and ribs 102 connected to both sides of the trunk 101, wherein the ribs 102 have a certain curvature to form a cylindrical structure with the trunk 101; the ribs 102 are provided with the contraction seam 103 along the length direction of the trunk 101. The ribs 102 on both sides can form a gap 104 between the curved ribs 102 on both sides, thereby changing the outer diameter of the cylindrical structure formed by the inner liner 10, thereby adapting to support pipes 3 of different sizes.

[0090] In addition, in order to avoid the coil of the spring 9 being stuck in the shrinkage seam 103 and causing stretching jam, the width of the shrinkage seam 103 after gathering is smaller than the wire diameter of the spring 9 in this embodiment, so that this situation can be completely avoided. In addition, the thickness of the trunk 101 is equal to the thickness of the rib 102, so that the outer diameter of the liner 10 at each position is the same, and the trunk 101 can also fit with the inner wall of the support tube 3 without generating a gap, and the liner 10 is easy to assemble into the support tube 3. In addition, the liner is made of TPEE elastic plastic, which has a small friction coefficient, which further reduces the friction between the spring and the liner, and further improves the smoothness of the pull.

[0091] refer to Figure 13-14 In this embodiment, the inner liner 10 is in a straight fishbone shape when in a loose state, and the ribs 102 on both sides of the inner liner 10 are spaced apart at the opposite ends to form a gap 104. Thus, after the inner liner 10 is installed in the support tube 3, the ribs 102 are restricted by the inner wall of the support tube 3 and shrink inward to a circular shape and fit the inner wall of the support tube 3. In this way, after the inner liner 10 is installed in the support tube 3, the ribs 102 maintain an outward tension force, which can prevent the ribs 102 from curling inward and interfering with the movement of the spring 9.

[0092] Example 4

[0093] refer to Figure 15-16 In this embodiment, in order to prevent the water outlet body 62 in the water outlet assembly 6 from being flushed out and separated from the support tube 3 under high water pressure, a non-weighted pull-out faucet anti-flushing structure is provided. The water outlet end of the inner tube is provided with a water outlet buffer joint 21, and the water outlet buffer joint 21 is fixed to the inner tube by bonding, welding, riveting or secondary filling; the water outlet buffer joint 21 is used to change the water flow along the axial direction of the inner tube to the water outlet along the lateral direction of the inner tube. Since the water outlet direction is changed, a buffering effect is formed, thereby greatly reducing the impact force of the water flow on the water outlet body 62. Even under high water pressure, the water outlet body 62 will not be separated from the support tube 3 in a non-pull-out state.

[0094] To achieve the change of the water outlet direction, one end of the water outlet buffer joint 21 along the axial direction of the inner tube is a closed end 211, and a water outlet 212 is provided on the radial side wall of the inner tube. In this way, the water flow first hits the closed end 211 for buffering and then flows out from the side water outlet 212. The number of water outlets 212 can be arbitrarily set as needed.

[0095] Finally, the outer wall of the water outlet buffer joint 21 in this embodiment is an arc surface, which reduces the friction between the water outlet end of the inner tube 2 and the pull-out tube 81, making the pull-out smoother, especially when the pull-out tube 81 uses a corrugated tube, which can avoid the problem that the water outlet end of the inner tube 2 is stuck by the groove of the corrugated tube.

[0096] The above description is only a preferred specific implementation mode of the present invention, and does not limit the patent scope of the present invention. Any technical equivalent changes made using the contents of the present invention specification shall fall within the protection scope of the present invention.

Claims

1. A noise reduction structure for a pull-out faucet without a heavy hammer, characterized in that include: Support tube, pull-out tube, elastic reset piece and liner; The support tube is connected to the faucet body through an intermediate connector; the elastic reset member is sleeved outside the pull-out tube, one end of which is a fixed end and the other end is connected to the pull-out tube to form a linkage end; the lining is arranged between the inner wall of the support tube and the outer wall of the elastic reset member; The liner is provided with a contraction seam along the inner wall of the support tube from the outside to the inside of the bending radius of the support tube, so that when the liner is inserted into the support tube, the parts of the liner on both sides of the contraction seam gather in the direction of closing the contraction seam.

2. A noise reduction structure for a pull-out faucet without a heavy hammer, characterized in that include: Support tube, pull-out tube, elastic reset piece and liner; The support tube is connected to the faucet body through an intermediate connector; the elastic reset member is sleeved outside the pull-out tube, one end of which is a fixed end and the other end is connected to the pull-out tube to form a linkage end; the lining is arranged between the inner wall of the support tube and the outer wall of the elastic reset member; The liner is provided with a shrinkage seam along the inner wall of the support tube from the outside to the inside of the bending radius of the support tube, so that when the liner is inserted into the support tube, the inner side of the liner in the direction of the bending radius of the support tube has a greater bending curvature than the outer side.

3. A noise reduction structure for a pull-out faucet without a heavy hammer according to claim 1 or 2, characterized in that: The shrinkage seam has a structure in which the width gradually increases from the outside to the inside along the bending radius of the support tube.

4. A noise reduction structure for a pull-out faucet without a heavy hammer according to claim 1 or 2, characterized in that: The inner lining includes a main trunk and ribs connected to both sides of the main trunk, wherein the ribs and the main trunk form a cylindrical structure; the ribs are provided with the shrinkage seams along the length direction of the main trunk.

5. The noise reduction structure of a pull-out faucet without a heavy hammer according to claim 1 or 2, characterized in that: The elastic reset member is a spring, and the width of the contraction seams after being gathered is smaller than the spring wire diameter.

6. The noise reduction structure of a pull-out faucet without a weight according to claim 4, characterized in that: When the liner is in a released state, the outer shape of the liner is a straight-tube fishbone joint shape, and the ribs on both sides of the liner are spaced apart at the opposite ends to form a gap.

7. The noise reduction structure of a pull-out faucet without a weight according to claim 4, characterized in that: When the liner is inserted into the support tube, the trunk is in contact with the inner wall of the support tube.

8. A noise reduction structure for a pull-out faucet without a heavy hammer according to any one of claims 1 to 7, characterized in that: The material of the lining is plastic or hard rubber.

9. A weightless pull-out faucet, characterized in that It comprises the noise reduction structure and water outlet assembly according to any one of claims 1 to 8; One end of the pulling tube is fixedly connected to the water outlet assembly, and the other end extends radially outward to form a first limiting surface. The inner wall of one end of the support tube facing the water outlet assembly extends radially inward to form a second limiting surface, and the elastic reset member is connected between the first limiting surface and the second limiting surface. When the water outlet assembly drives the pulling tube to extend in a direction away from the supporting tube, the first limiting surface squeezes the elastic reset component to accumulate elastic reset force.

10. The weightless pull-out faucet according to claim 9, characterized in that: The intermediate connecting piece is fixedly connected to the faucet body, and the support pipe and the intermediate connecting piece are rotatably connected.

11. The weightless pull-out faucet according to claim 9, characterized in that: It also includes an inner tube; the inner tube is inserted into the pull-out tube, and the end of the inner tube is connected to an inner tube joint, a limiting space for clamping the inner tube joint is formed between the intermediate connecting piece and the faucet body, and the limiting space provides a limiting force to the inner tube along the length direction of the inner tube.

12. The weightless pull-out faucet according to claim 9, characterized in that: A first limiting member is disposed at the end of the pulling tube, and the first limiting member extends radially outwardly along the pulling tube to form the first limiting surface.

13. The weightless pull-out faucet according to claim 12, characterized in that: The pull-out tube is fixedly connected to the first limit member via a joint; the joint comprises an insertion portion inserted into the pull-out tube, and a connecting portion located outside the pull-out tube, the connecting portion extends radially outward relative to the insertion portion, the outer wall of the connecting portion is fixed to the first limit member via threads, and a Y-shaped sealing ring is arranged between the inner wall of the connecting portion and the outer wall of the inner tube.

14. The weightless pull-out faucet according to claim 9, characterized in that: A second limiting member is disposed inside one end of the support pipe facing the water outlet assembly, and the second limiting member extends radially inward to form the second limiting surface.

15. The weightless pull-out faucet according to claim 14, characterized in that: The second limiting member is provided with a clearance opening for the pulling tube to move.

16. A weightless pull-out faucet according to any one of claims 11 to 15, characterized in that: The hardness of the inner tube is 80-95A, and the hardness of the drawing tube is 70-85A. 17.An anti-blowout structure for a pull-out faucet without a heavy hammer, characterized in that include: Faucet body, inner tube, support tube, elastic reset part, pull-out tube and water outlet assembly; The support tube is connected to the faucet body through an intermediate connector; the elastic reset member is sleeved outside the pull-out tube, one end of which is a fixed end and the other end is connected to the pull-out tube to form a linkage end; One end of the inner tube is the water inlet end, and the other end is provided with a water outlet buffer joint; the water outlet buffer joint is used to change the water flow along the axial direction of the inner tube to the water outlet along the lateral direction of the inner tube.

18. The anti-blowout structure of a pull-out faucet without a weight according to claim 17, characterized in that: One end of the water outlet buffer joint along the axial direction of the inner tube is a closed end, and a water outlet is arranged on the side wall along the radial direction of the inner tube.

19. The anti-blowout structure of a pull-out faucet without a heavy hammer according to claim 18, characterized in that: There are multiple water outlets, which are arranged at intervals along the circumference of the water outlet buffer joint.

20. The anti-blowout structure of a pull-out faucet without a weight according to claim 17, characterized in that: The outer wall of the water outlet buffer joint is an arc surface.

21. A pull-out faucet without a heavy hammer, characterized in that It comprises a faucet body and an anti-blowout structure according to any one of claims 17 to 20; One end of the pulling tube is fixedly connected to the water outlet assembly, and the other end extends radially outward to form a first limiting surface. The inner wall of one end of the support tube facing the water outlet assembly extends radially inward to form a second limiting surface, and the elastic reset member is connected between the first limiting surface and the second limiting surface. When the water outlet assembly drives the pulling tube to extend in a direction away from the supporting tube, the first limiting surface squeezes the elastic reset component to accumulate elastic reset force.

22. The weightless pull-out faucet according to claim 17, characterized in that: The intermediate connecting piece is fixedly connected to the faucet body, and the support pipe and the intermediate connecting piece are rotatably connected.

23. The weightless pull-out faucet according to claim 21, characterized in that: It also includes an inner tube; the inner tube is inserted into the pull-out tube, and the end of the inner tube is connected to an inner tube joint, a limiting space for clamping the inner tube joint is formed between the intermediate connecting piece and the faucet body, and the limiting space provides a limiting force to the inner tube along the length direction of the inner tube.

24. The weightless pull-out faucet according to claim 21, characterized in that: A first limiting member is disposed at the end of the pulling tube, and the first limiting member extends radially outwardly along the pulling tube to form the first limiting surface.

25. The weightless pull-out faucet according to claim 24, characterized in that: The pull-out tube is fixedly connected to the first limit member via a joint; the joint comprises an insertion portion inserted into the pull-out tube, and a connecting portion located outside the pull-out tube, the connecting portion extends radially outward relative to the insertion portion, the outer wall of the connecting portion is fixed to the first limit member via threads, and a Y-shaped sealing ring is arranged between the inner wall of the connecting portion and the outer wall of the inner tube.

26. The weightless pull-out faucet according to claim 21, characterized in that: A second limiting member is disposed inside one end of the support pipe facing the water outlet assembly, and the second limiting member extends radially inward to form the second limiting surface.

27. The weightless pull-out faucet according to claim 26, characterized in that: The second limiting member is provided with a clearance opening for the pulling tube to move.

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