Pull-out water outlet device

Abstract

The present invention belongs to the technical field of bathroom, and discloses a pull-out type water outlet device, including an outer tube, a pull-out tube and a switching assembly, one end of the pull-out tube is connected to a load, the other end of the pull-out tube passes through the outer tube and is connected to a water outlet; the switching assembly is sleeved on the pull-out tube and connected to the outer tube, the switching assembly has a first state of pressing against the pull-out tube and a second state of loosening the pull-out tube, when the switching assembly is in the first state, the pull-out tube can be pulled out of the outer tube and suspended at any position, when the switching assembly is in the second state, the pull-out tube can be pulled out and retracted into the outer tube when the external pulling force is lost. The above-mentioned pull-out type water outlet device can be suspended at any position and can retract the outer tube at any position, and is flexible to use.

Description

Technical Field

[0001] The invention relates to the technical field of bathrooms, and in particular to a pull-out water outlet device. Background Art

[0002] Pull-out faucets have gradually replaced traditional fixed faucets because of their larger cleaning range and have become the mainstream water outlet devices in bathrooms. Existing pull-out faucets usually rely on the gravity of a plumb structure to complete the pull-out and return process. When pulling out for use, the user is required to always apply pulling force to the pull-out tube of the pull-out faucet. For this reason, a pull-out faucet with a hovering function has been proposed in the relevant technology, which can make the pull-out tube hover at a certain position. However, the pull-out faucet with a hovering function either requires the pull-out tube to be pulled to a specified position before it can hover, or it is stuck in sections, and the pull-out tube needs to be pulled to the extreme position before it can be retracted to the initial position, which still has the problem of inconvenience in use. Summary of the invention

[0003] The object of the present invention is to provide a pull-out water outlet device to solve the problem that a pull-out tube in a pull-out faucet cannot be suspended at any position and cannot be retracted to an initial position from any position.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] A pull-out water outlet device comprises an outer tube, a pull-out tube and a switching assembly, wherein one end of the pull-out tube is connected to a load, and the other end of the pull-out tube passes through the outer tube and is connected to a water outlet head; the switching assembly is sleeved on the pull-out tube and connected to the outer tube, and the switching assembly has a first state of pressing against the pull-out tube and a second state of loosening the pull-out tube. When the switching assembly is in the first state, the pull-out tube can be pulled out of the outer tube and hover at any position, and when the switching assembly is in the second state, the pull-out tube can be pulled out and retracted into the outer tube when the external pulling force is lost.

[0006] Optionally, the switching assembly includes a knob and a buckle, the buckle is fixed on the outer tube, the knob is rotatably set on the buckle, the knob includes a main body and at least two elastic arms circumferentially spaced apart on the main body, a plurality of locking protrusions corresponding to the elastic arms are spaced apart on the inner wall of the buckle, when the locking protrusion abuts against the elastic arm, the switching assembly is in the first state, when the locking protrusion is staggered from the elastic arm, the switching assembly is in the second state.

[0007] Optionally, when the switching assembly is in the first state, the elastic arm holds the pull-out tube tightly, and when the switching assembly is in the second state, the elastic arm releases the pull-out tube.

[0008] Optionally, a first guide surface is formed on the locking protrusion, and the first guide surface gradually approaches the axis of the outer tube from one end to the other end along the circumferential direction. A second guide surface is provided on the side of the elastic arm close to the first guide surface, and the second guide surface gradually moves away from the axis of the outer tube from one end close to the first guide surface to the other end.

[0009] Optionally, the knob further includes a limiting protrusion, and a plurality of the limiting protrusions are arranged one by one at an end of each elastic arm away from the main body, and the limiting protrusion is hooked on the buckle.

[0010] Optionally, the main body is located outside the outer tube, and an outer diameter of the main body is greater than an inner diameter of the outer tube.

[0011] Optionally, the knob further includes a positioning rib, which is disposed on the main body and extends axially along the main body, and a plurality of the positioning ribs are spaced apart circumferentially along the main body and abut against an inner wall of the buckle.

[0012] Optionally, a fixing protrusion is provided on one of the buckle and the outer tube, a fixing hole is provided on the other of the buckle and the outer tube, and the fixing protrusion is clamped in the fixing hole.

[0013] Optionally, the buckle includes a connecting portion and a deformation portion, the connecting portion is arranged in a ring shape, the deformation portion is arranged at one axial end of the connecting portion, and two long grooves arranged axially through the deformation portion are arranged at intervals along the circumference of the deformation portion to separate the deformation portion into a first deformation portion and a second deformation portion, the central angle corresponding to the first deformation portion is smaller than the central angle corresponding to the second deformation portion, the fixing protrusion or fixing hole is located on the first deformation portion, and the locking protrusion is located on the second deformation portion.

[0014] Optionally, a plurality of inwardly protruding positioning protrusions are circumferentially spaced apart on the deformation portion, the locking protrusion is arranged on the positioning protrusion, and the number of the positioning protrusions is greater than the locking protrusions, and when the switching assembly is in the second state, the positioning protrusion is attached to the knob, and the outer wall of the deformation portion is attached to the inner wall of the outer tube.

[0015] Optionally, the connecting portion is located outside the outer tube and abuts against an end surface of the outer tube close to the water outlet head.

[0016] Beneficial effects of the present invention: the switching assembly provided in the pull-out type water outlet device proposed in the present invention can press against or loosen the pull-out tube. When the switching assembly is in the first state of pressing against the pull-out tube, the pull-out tube can be pulled out of the outer tube by applying external force to the pull-out tube. When the external force stops being applied, the pull-out tube will suspend at the current position because the friction force formed between the switching assembly and the pull-out tube is not less than the gravity of the load. When the pull-out tube needs to be retracted into the outer tube, it is only necessary to adjust the switching assembly to the second state of loosening the pull-out tube, and the pull-out tube can be automatically retracted under the gravity of the load. Moreover, when the switching assembly is in the second state, the pull-out tube can also be pulled out and retracted into the outer tube after the pull-out external force is lost, and the pull-out external force used to pull the pull-out tube is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 2 is a schematic structural diagram of a pull-out water outlet device according to an embodiment of the present invention;

[0018] Figure 2 Schematic diagram of the explosion structure of the pull-out water outlet device in the embodiment of the present invention;

[0019] Figure 3 2 is a side view of the pull-out water outlet device in the embodiment of the present invention;

[0020] Figure 4 yes Figure 3 The cross-section along the AA direction;

[0021] Figure 5 is a schematic diagram of a structure in which a switching component is in a first state in an embodiment of the present invention;

[0022] Figure 6 is a schematic diagram of a structure in which a switching component is in a second state in an embodiment of the present invention;

[0023] Figure 7 is a schematic diagram of the three-dimensional structure of a knob in an embodiment of the present invention;

[0024] Figure 8 is a top view of a knob in an embodiment of the present invention;

[0025] Fig. 9 is a schematic diagram of the three-dimensional structure of a buckle in an embodiment of the present invention;

[0026] Fig.10 is a top view of the buckle in the embodiment of the present invention.

[0027] In the figure:

[0028] 1. Outer tube; 11. Fixing hole; 2. Pull-out tube; 3. Switching assembly; 31. Knob; 311. Main body; 312. Elastic arm; 3121. Second guide surface; 313. Limiting protrusion; 3131. Third guide surface; 314. Positioning rib; 32. Buckle; 321. Connecting part; 322. Deformation part; 3222. Positioning protrusion; 323. Locking protrusion; 3231. First guide surface; 324. Fixing protrusion; 4. Water outlet. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0030] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed 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 elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0033] In an embodiment of the present invention, a pull-out water outlet device is provided, including but not limited to a pull-out shower head and a pull-out faucet. Figure 1-Figure 10As shown, the pull-out water outlet device includes a pull-out tube 2, an outer tube 1, a switching component 3, a load and a water outlet head 4. The load can be but is not limited to a heavy hammer. One end of the pull-out tube 2 is connected to the load, and the other end passes through the outer tube 1 and is connected to the water outlet head 4 in a manner including but not limited to a threaded connection. The switching component 3 is sleeved on the pull-out tube 2 and connected to the outer tube 1. The switching component 3 has a first state and a second state. When the switching component 3 is in the first state, a friction force not less than the gravity of the load is formed between the switching component 3 and the pull-out tube 2, and the pull-out tube 2 can be pulled out and hover at any position. When the switching component 3 is in the second state, the switching component 3 releases the pull-out tube 2, and the pull-out tube 2 can be pulled out and retracted into the outer tube 1 when the external pulling force is lost.

[0034] The switching assembly 3 provided in the above-mentioned pull-out type water outlet device can press against or release the pull-out tube 2. When the switching assembly 3 is in the first state of pressing against the pull-out tube 2, the pull-out tube 2 can be pulled out of the outer tube 1 by applying external force to the pull-out tube 2. When the external force stops being applied, the pull-out tube 2 is suspended at the current position because the friction force formed between the switching assembly 3 and the pull-out tube 2 is not less than the gravity of the load. When the pull-out tube 2 needs to be retracted into the outer tube 1, it is only necessary to adjust the switching assembly 3 to the second state of releasing the pull-out tube 2, and the pull-out tube 2 can be automatically retracted under the gravity of the load. When the switching assembly 3 is in the second state, the pull-out tube 2 can also be pulled out. For example, when the pull-out function is used for a short time, the pull-out tube 2 does not need to overcome the friction force applied by the switching assembly 3 to the pull-out tube 2, and the pull-out tube 2 can be pulled out easily.

[0035] The cam 32 is provided with a plurality of springs 326 which are respectively provided on the outer tube 1 and the outer tube 2, and the springs 327 are provided on the outer tube 1 and the outer tube 24. It is understandable that the buckle 32 can be fixed to the end of the outer tube 1 close to the water outlet 4 or to the end of the outer tube 1 away from the water outlet 4. In this embodiment, for easy operation, the buckle 32 is fixed to the end of the outer tube 1 close to the water outlet.

[0036] More specifically, refer to Figure 5As shown, in order to reduce the difficulty of rotating the knob 31, a first guide surface 3231 is formed on the locking protrusion 323, and the first guide surface 3231 gradually approaches the axis of the outer tube 1 from one end to the other end along the circumferential direction. At the same time, a second guide surface 3121 is provided on the side of the elastic arm 312 close to the first guide surface 3231, and the second guide surface 3121 gradually moves away from the axis of the outer tube 1 from the side close to the first guide surface 3231 to the other side.

[0037] In this embodiment, the elastic force of the elastic arm 312 comes from its own material properties, and the elastic arm 312 is integrally formed with the main body 311. In other embodiments, the elastic arm 312 is connected to the main body 311 through an elastic member, and the elastic force of the elastic arm 312 comes from the elastic member.

[0038] refer to Figure 5 and Figure 7 As shown, in order to realize the rotation connection between the knob 31 and the buckle 32, the knob 31 further includes a limiting protrusion 313, and a plurality of limiting protrusions 313 are arranged one by one at one end of each elastic arm 312 away from the main body 311 and extend radially to the outside of the elastic arm 312. The limiting protrusion 313 is hooked on the end of the buckle 32 away from the water outlet 4. Specifically, a third guide surface 3131 is arranged on the side of the limiting protrusion 313 facing away from the elastic arm 312, and the third guide surface 3131 gradually approaches the elastic arm 312 from the end close to the drawing tube 2 to the end away from the drawing tube 2, and the arrangement of the third guide surface 3131 reduces the difficulty of assembling the knob 31 and the buckle 32.

[0039] More specifically, the main body 311 is located outside the outer tube 1 and the outer diameter of the main body 311 is larger than the inner diameter of the outer tube 1, so as to axially limit the pull-out tube 2 and prevent the water outlet head 4 from entering the outer tube 1. At the same time, a plurality of anti-skid grooves are arranged at intervals along the circumference on the outer wall of the main body 311, and the anti-skid grooves extend axially. Obviously, the outer diameter of the annular structure formed by the plurality of elastic arms 312 is smaller than the inner diameter of the outer tube 1. In order to radially limit the knob 31, improve the stability of the knob 31 on the buckle 32, and reduce the possibility of the knob 31 being separated from the buckle 32, the knob 31 also includes a positioning rib 314, which is arranged on the end face of one end where the main body 311 is connected to the elastic arm 312 and extends axially along the main body 311. The plurality of positioning ribs 314 are arranged at intervals along the circumference of the main body 311 and abut against the inner wall of the buckle 32.

[0040] refer to Figure 1 and Fig.10 As shown, the buckle 32 is inserted into the outer tube 1. In order to achieve a fixed connection between the buckle 32 and the outer tube 1, a fixing protrusion 324 is provided on one of the buckle 32 and the outer tube 1, and a fixing hole 11 is opened on the other, and the fixing protrusion 324 is clamped in the fixing hole 11.

[0041] Specifically, refer to Fig. 9 and Fig.10 As shown, the buckle 32 includes a connecting portion 321 and a deforming portion 322, wherein the connecting portion 321 is configured as a closed annular structure, the deforming portion 322 is configured at one axial end of the connecting portion 321, the deforming portion 322 is configured as an annular structure having a long groove extending therethrough in the axial direction, i.e., an open ring structure, and the locking protrusion 323 is configured on the inner wall of the deforming portion 322. More specifically, two long grooves are provided at intervals along the circumference of the deforming portion 322, thereby separating the deforming portion 322 into a first deforming portion and a second deforming portion, the central angle corresponding to the first deforming portion is smaller than the central angle corresponding to the second deforming portion, the fixing protrusion 324 or the fixing hole 11 is located on the first deforming portion to reduce the difficulty of the fixing protrusion 324 being inserted into the fixing hole 11, and the locking protrusion 323 is located on the second deforming portion to increase the radial pressure applied to the elastic arm 312 by the locking protrusion 323 when it abuts against the elastic arm 312. Exemplarily, the central angle corresponding to the first deformation portion is less than 90°.

[0042] In this embodiment, the fixing protrusion 324 is arranged on the buckle 32, and the fixing hole 11 is arranged on the outer tube 1. When the buckle 32 needs to be replaced, the buckle 32 can be detached from the outer tube 1 by applying a radially inward force to the fixing protrusion 324.

[0043] Exemplarily, a plurality of inwardly recessed positioning protrusions 3222 are arranged at intervals along the axial direction on the deformation part 322, and the locking protrusions 323 are arranged on the positioning protrusions 3222, and the number of the positioning protrusions 3222 is greater than the number of the locking protrusions 323. When the switching assembly 3 is in the second state, the positioning protrusions 3222 are fitted to the positioning ribs 314 to improve the stability between the knob 31 and the buckle 32. The outer wall of the deformation part 322 is fitted to the inner wall of the outer tube 1 to improve the stability between the buckle 32 and the outer tube 1. It can be understood that the arrangement of the positioning protrusions 3222 can also enhance the structural strength of the deformation part 322 and extend the service life of the buckle 32.

[0044] In addition, the connecting portion 321 is located outside the outer tube 1 and abuts against an end surface of the outer tube 1 close to the water outlet 4 to axially limit the buckle 32 and reduce the difficulty of the fixing protrusion 324 being inserted into the fixing hole 11 .

[0045] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A pull-out water outlet device, characterized in that: The pull-out water outlet device comprises: Outer tube (1), A pull-out tube (2), one end of the pull-out tube (2) being connected to a load, and the other end of the pull-out tube (2) passing through the outer tube (1) and being connected to a water outlet (4); A switching assembly (3), the switching assembly (3) being sleeved on the drawer tube (2) and connected to the outer tube (1), the switching assembly (3) having a first state of pressing against the drawer tube (2) and a second state of releasing the drawer tube (2), the switching assembly (3) comprising a knob (31) and a buckle (32), the buckle (32) being fixed on the outer tube (1), the knob (31) being rotatably arranged on the buckle (32), the knob (31) comprising a main body (31 1) and at least two elastic arms (312) arranged at intervals along the circumferential direction on the main body (311), a plurality of locking protrusions (323) corresponding to the elastic arms (312) are arranged at intervals on the inner wall of the buckle (32), when the locking protrusions (323) abut against the elastic arms (312), the switching assembly (3) is in the first state, and when the locking protrusions (323) are offset from the elastic arms (312), the switching assembly (3) is in the second state; When the switching component (3) is in the first state, the pulling tube (2) can be pulled out of the outer tube (1) and suspended at any position; when the switching component (3) is in the second state, the pulling tube (2) can be pulled out and retracted into the outer tube (1) when the pulling external force is lost.

2. The pull-out water outlet device according to claim 1, characterized in that: When the switching component (3) is in the first state, the elastic arm (312) holds the drawer tube (2) tightly; when the switching component (3) is in the second state, the elastic arm (312) releases the drawer tube (2).

3. The pull-out water outlet device according to claim 1, characterized in that: A first guide surface (3231) is formed on the locking protrusion (323), and the first guide surface (3231) gradually approaches the axis of the outer tube (1) from one end to the other end along the circumferential direction. A second guide surface (3121) is provided on a side of the elastic arm (312) close to the first guide surface (3231), and the second guide surface (3121) gradually moves away from the axis of the outer tube (1) from one end close to the first guide surface (3231) to the other end.

4. The pull-out water outlet device according to claim 1, characterized in that: The knob (31) further comprises a limiting protrusion (313), wherein a plurality of the limiting protrusions (313) are arranged one by one at an end of each elastic arm (312) away from the main body (311), and the limiting protrusions (313) are hooked on the buckle (32).

5. The pull-out water outlet device according to claim 1, characterized in that: The main body (311) is located outside the outer tube (1), and the outer diameter of the main body (311) is greater than the inner diameter of the outer tube (1).

6. The pull-out water outlet device according to claim 1, characterized in that: The knob (31) further comprises a positioning rib (314), wherein the positioning rib (314) is arranged on the main body (311) and extends axially along the main body (311), and a plurality of the positioning ribs (314) are arranged at intervals in the circumferential direction of the main body (311) and abut against the inner wall of the buckle (32).

7. The pull-out water outlet device according to claim 1, characterized in that: A fixing protrusion (324) is provided on one of the buckle (32) and the outer tube (1), and a fixing hole (11) is provided on the other of the buckle (32) and the outer tube (1), and the fixing protrusion (324) is fixed in the fixing hole (11).

8. The pull-out water outlet device according to claim 7, characterized in that: The buckle (32) comprises a connecting portion (321) and a deformable portion (322); the connecting portion (321) is arranged in an annular shape; the deformable portion (322) is arranged at one axial end of the connecting portion (321); two long grooves are arranged on the deformable portion (322) at intervals along the circumference of the deformable portion (322) and are arranged to penetrate the deformable portion (322) in the axial direction, so as to separate the deformable portion (322) into a first deformable portion and a second deformable portion; the central angle corresponding to the first deformable portion is smaller than the central angle corresponding to the second deformable portion; the fixing protrusion (324) or the fixing hole (11) is located on the first deformable portion; and the locking protrusion (323) is located on the second deformable portion.

9. The pull-out water outlet device according to claim 8, characterized in that: A plurality of inwardly protruding positioning protrusions (3222) are arranged at intervals along the circumferential direction on the deformation portion (322); the locking protrusions (323) are arranged on the positioning protrusions (3222), and the number of the positioning protrusions (3222) is greater than the number of the locking protrusions (323); when the switching component (3) is in the second state, the positioning protrusions (3222) are in contact with the knob (31), and the outer wall of the deformation portion (322) is in contact with the inner wall of the outer tube (1).

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