A self-resetting switching structure and a pulling head

Abstract

The present invention relates to a self-resetting switching structure and a pull-out head, characterized by comprising: a main body, the main body being provided with a water inlet and a first water outlet; a button assembly, the button assembly being provided on the main body and having a first reset spring interposed therebetween; a central valve plug, the central valve plug being capable of selectively blocking the first and second water outlets and having a second reset spring interposed therebetween; and a movable rocker arm comprising a movable member and a swinging member, the movable member being pivotally connected to the swinging member, the movable member being linked to the central valve plug, the swinging member being cooperatively connected to the button assembly to achieve movement of the movable member, and a reset device being interposed between the swinging member and the main body. The present invention has the advantages of free switching, simple operation, and a memory function.

Description

Technical Field

[0001] The present invention relates to the field of kitchen and bathroom, and in particular to a self-resetting switching structure and a pull-out head. Background Art

[0002] Currently, in kitchen, bathroom, and plumbing products, the structures on the market that use a single button to achieve two-function switching are mostly long seesaw structures and ballpoint pen-like structures. Although the seesaw structure can achieve a memory function, it is not beautiful and inconvenient to press. The ballpoint pen structure can achieve a relatively beautiful appearance, is relatively convenient to switch, and does not require much space, but it cannot achieve a memory function.

[0003] To address this problem, the inventors have provided a better solution. Summary of the Invention

[0004] The object of the present invention is to provide a self-resetting switching structure and a pull-out head, which are free to switch, easy to operate and have a memory function.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A self-resetting switching structure, characterized by comprising:

[0007] A main body, wherein the main body is provided with a water inlet and a first water outlet and a second water outlet;

[0008] A button assembly, the button assembly being disposed on the main body and having a first return spring disposed therebetween; the button assembly comprising a button and a button frame, wherein a first inclined surface and a second inclined surface are disposed on the left and right sides of the button, the lower ends of the first inclined surface and the second inclined surface being connected; the button frame being in the shape of a human figure, two groups of wedge-shaped blocks being spaced apart inside the button frame, each wedge-shaped block having the first inclined surface and the second inclined surface; a sliding block being disposed on the outside of the button frame, and a T-shaped slide rail being disposed inside the main body to cooperate with the sliding block;

[0009] a central valve plug, which can selectively block the first water outlet and the second water outlet, and a second return spring is provided between the central valve plug and the main body;

[0010] A movable rocker comprises a movable part and a swinging part, and the movable part and the swinging part are pivotally connected, the movable part is linked to the central valve bolt, and the swinging part is matched with the button assembly to realize the movement of the movable part, and a third inclined surface and a fourth inclined surface distributed on the left and right are provided above the swinging part, the upper ends of the third inclined surface and the fourth inclined surface are connected, the second inclined surface matches the third inclined surface, and the first inclined surface matches the fourth inclined surface, and the swinging part comprises a central fixed block and wedge blocks located on both sides of the central fixed block, each wedge block has the third inclined surface and the fourth inclined surface, and the movable part is provided with a mounting groove, the swinging part is provided in the mounting groove, and is pivotally connected to the movable part by a pin, the mounting groove is provided with a fifth inclined surface, and a reset device is provided between the swinging part and the body.

[0011] Preferably, the reset device comprises a third reset spring and a fourth reset spring, which are respectively arranged on the left and right sides of the swing member through a positioning bead.

[0012] Preferably, the first water outlet and the second water outlet are respectively provided with a first sealing surface and a second sealing surface; one end of the central valve plug is connected to the moving part, and the other end is provided with a sealing part, which can selectively contact the first sealing surface and the second sealing surface.

[0013] Preferably, the main body includes a shell and a fixing seat, a water inlet member, a water distribution member and a water outlet assembly arranged in the shell, wherein the water inlet member is connected to the water distribution member to form the first sealing surface and the second sealing surface; the water distribution member is connected to the water outlet assembly to form the first water outlet path and the second water outlet path; the fixing seat is arranged between the water distribution member and the shell for installing the button assembly.

[0014] The present invention also provides another technical solution:

[0015] A pulling head includes the above-mentioned self-resetting switching structure.

[0016] With the above structure, the swinging member is connected with the button assembly to control the movement of the moving member, and the moving member drives the central valve plug to move synchronously during the movement, thereby controlling the central valve plug to block the first water outlet or the second water outlet, realizing the waterway switching function. The present invention has the following beneficial effects:

[0017] 1. This invention utilizes the interaction between the inclined surfaces to convert the downward motion of the button assembly into left and right movement of the movable rocker. Because the swinging member can swing at a certain angle, the intersection of the inclined surfaces below the button alternates between the right and left intersections of the inclined surfaces above the swinging member. This allows each press of the button to cause the movable rocker to move in a different direction, thereby switching between different functions. This allows for easy operation, eliminating the need for continuous finger pressure on the button and enabling flexible switching.

[0018] 2. The present invention can always be reset to the initial state after water is cut off and has a memory function. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a stereogram of embodiment 1 of the present invention.

[0021] Figure 2 It is a cross-sectional view of embodiment 1 of the present invention.

[0022] Figure 3 It is an exploded view of embodiment 1 of the present invention.

[0023] Figure 4 This is a three-dimensional diagram of the positioning beads of Example 1 of the present invention.

[0024] Figure 5 It is a three-dimensional diagram of the button skeleton of Example 1 of the present invention.

[0025] Figure 6 4 is a cross-sectional view of the button skeleton of Example 1 of the present invention.

[0026] Figure 7 It is a transverse cross-sectional view of embodiment 1 of the present invention.

[0027] Figure 8 It is a three-dimensional diagram of the movable rocker arm according to embodiment 1 of the present invention.

[0028] Figure 9 This is a diagram showing the assembly effect of the central valve stem and the movable rocker arm of Example 1 of the present invention.

[0029] Figure 10 It is an exploded view of the central valve stem and movable rocker arm structure of Example 1 of the present invention.

[0030] Figure 11 This is a first longitudinal sectional view of the first state (initial state) of Example 1 of the present invention.

[0031] Figure 12 This is a second longitudinal sectional view of the first state (initial state) of Example 1 of the present invention.

[0032] Figure 13 The first longitudinal section of the second state of embodiment 1 of the present invention Figure 1 .

[0033] Figure 14 The second longitudinal section of the second state of embodiment 1 of the present invention Figure 1 .

[0034] Figure 15 The first longitudinal section of the second state of embodiment 1 of the present invention Figure 2 .

[0035] Figure 16 The second longitudinal section of the second state of embodiment 1 of the present invention Figure 2 .

[0036] Figure 17 The first longitudinal section of the third state of embodiment 1 of the present invention Figure 1 .

[0037] Figure 18 The second longitudinal section of the third state of embodiment 1 of the present invention Figure 1 .

[0038] Figure 19 The first longitudinal section of the third state of embodiment 1 of the present invention Figure 2 .

[0039] Figure 20 The second longitudinal section of the third state of embodiment 1 of the present invention Figure 2 .

[0040] Figure 21 This is a structural diagram of the water outlet component of Example 2 of the present invention.

[0041] Figure 22 This is an overall effect diagram of Example 2 of the present invention.

[0042] Figure 23 It is a cross-sectional view of the overall structure of Example 2 of the present invention.

[0043] Figure 24 This is a first longitudinal sectional view of the first state (initial state) of Example 2 of the present invention.

[0044] Figure 25 This is a second longitudinal sectional view of the first state (initial state) of Example 2 of the present invention.

[0045] Figure 26 The first longitudinal section of the second state of embodiment 2 of the present invention Figure 1 .

[0046] Figure 27 The first longitudinal section of the second state of embodiment 2 of the present invention Figure 2 .

[0047] Figure 28 The second longitudinal section of the second state of embodiment 2 of the present invention Figure 1 .

[0048] Figure 29 The first longitudinal section of the second state of embodiment 2 of the present invention Figure 3 .

[0049] Figure 30 The second longitudinal section of the second state of embodiment 2 of the present invention Figure 2 .

[0050] Figure 31 The first longitudinal section of the third state of embodiment 2 of the present invention Figure 1 .

[0051] Figure 32 The second longitudinal section of the third state of embodiment 2 of the present invention Figure 1 .

[0052] Figure 33 The first longitudinal section of the third state of embodiment 2 of the present invention Figure 2 .

[0053] Figure 34 The second longitudinal section of the third state of embodiment 2 of the present invention Figure 2 .

[0054] Label Description

[0055] Body 1 - water inlet L - first water outlet L1 - second water outlet L2

[0056] Shell 11 fixed seat 12 water inlet 13 water distribution 14 water outlet assembly 15

[0057] First sealing surface A1 Second sealing surface A2 First water diversion hole 141

[0058] Second water diversion hole 142 First return spring 01 Second return spring 02

[0059] Button assembly 2 button 21 button frame 22 first inclined surface 221

[0060] Second inclined surface 222 sharp point A sliding block 223 T-shaped slide rail 101 center valve bolt 3

[0061] Valve stem 31 sealing head 32 spherical joint 311 moving rocker 4 moving part 41

[0062] Swinging member 42 mounting slot 410 pin 43 slot 411 shaft hole 420

[0063] Central fixing block 421 wedge block 422 third inclined surface 423

[0064] The fourth inclined surface 424 has a sharp point B and the fifth inclined surface 4101 has a reset device 5

[0065] Positioning beads 53, 54, push rods 531, 541, positioning cavities 532, 542

[0066] The third return spring 51 and the fourth return spring 52 DETAILED DESCRIPTION

[0067] Example 1

[0068] This embodiment is an application of a self-resetting switching structure on a dual-function pulling head.

[0069] like Figures 1 to 3 As shown, a self-resetting switching structure includes a body 1, a button assembly 2, a central valve bolt 3 and a movable rocker rod 4.

[0070] The main body 1 is provided with a water inlet L and a first water outlet L1 and a second water outlet L2. Specifically, the main body 1 includes a shell 11 and a fixing seat 12, a water inlet member 13, a water distribution member 14 and a water outlet assembly 15 provided in the shell 11. The fixing seat 12 is provided between the water distribution member 14 and the shell 11 and is used to install the button assembly 2. The water inlet member 13 is connected and matched with the water distribution member 14 to form a first sealing surface A1 and a second sealing surface A2. The water distribution member 14 includes a first water distribution hole 141 (not visible in the figure) located in the center and a second water distribution hole 142 surrounding the first water distribution hole 141. The water distribution member 14 is connected and matched with the water outlet assembly 15 to form a first water outlet L1 and a second water outlet L2.

[0071] like Figures 5 to 7 As shown, the button assembly 2 is mounted within the body 1, with a first return spring 01 interposed between the assembly and the body 1. Specifically, the assembly 2 comprises a button 21 and a button frame 22. The button frame 22 is roughly V-shaped and positioned below the button 21. The first return spring 01 is interposed between the two legs of the button frame 22 and the water inlet 13. Two sets of wedge-shaped blocks are spaced apart within the button frame 22, each with a first inclined surface 221 and a second inclined surface 222, located on either side. The lower ends of the first and second inclined surfaces 221 and 222 are connected to form a cusp A. A sliding block 223 is positioned on the outside of the button frame 22, and a T-shaped slide rail 101 is positioned within the body 1 to engage with the sliding block 223.

[0072] like Figure 9 and Figure 10As shown, the central valve plug 3 is located between the water inlet 13 and the water distribution member 14 and includes a valve stem 31 and a sealing head 32. One end of the valve stem 31 is fixedly connected to the sealing head 32, while the other end is connected to the movable rocker 4. The valve stem 31 moves in tandem with the movable rocker 4, allowing the sealing head 32 to selectively contact the first sealing surface A1 or the second sealing surface A2, thereby selectively blocking the first water outlet L1 or the second water outlet L2. A second return spring O2 is provided between the sealing head 32 and the water distribution member 14.

[0073] refer to Figure 8 As shown, the movable rocker 4 includes a movable member 41 and a swinging member 42, which are pivotally connected. Specifically, the movable member 41 has a mounting slot 410 defined therein, and the swinging member 42 is disposed within the mounting slot 410 and pivotally connected to the movable member 41 via a pin 43. A retaining slot 411 is provided on the outer side of the movable member 41. The valve stem 31 of the center valve plug 3 is provided with a spherical joint 311 that engages within the retaining slot 411 to achieve connection with the movable member 41.

[0074] The swinging member 42 includes an axial hole 420, a central fixed block 421 located above the axial hole 420, and wedge-shaped blocks 422 located on either side of the central fixed block 421. Each wedge-shaped block 422 has a third inclined surface 423 and a fourth inclined surface 424 distributed on the left and right sides. The upper ends of the third inclined surface 423 and the fourth inclined surface 424 are connected to form a cusp B. When the swinging member 42 cooperates with the button assembly 2, the second inclined surface 222 cooperates with the third inclined surface 423, and the first inclined surface 221 cooperates with the fourth inclined surface 424. The swinging member 42 also has a first vertical surface 4201 and a second vertical surface 4202. A fifth inclined surface 4101 is provided in the mounting groove 410 of the movable member 41 for controlling the swinging angle of the swinging member 42. The swinging member 42 cooperates with the button assembly 2 to achieve movement of the movable member 41. A reset device 5 is provided between the swinging member 42 and the body 1.

[0075] refer to Figure 4 As shown, the reset device 5 includes a third reset spring 51 and a fourth reset spring 52, which are respectively arranged on the left and right sides of the swing member 42 through positioning beads 53 and 54. Among them, the positioning bead 53 (54) includes a push rod 531 (541) and a positioning cavity 532 (542). The push rod 531 (541) abuts one side of the central fixed block 421, and the positioning cavity 532 (542) is provided with the third reset spring 51 (fourth reset spring 52). The third reset spring 51 and the fourth reset spring 52 are respectively abutted against the left and right sides of the central fixed block 421 through the positioning beads 53 and 54.

[0076] The above structure utilizes the interaction between the inclined surfaces to convert the downward movement of the button assembly 2 into the left and right movement of the movable rocker 4. Because the swinging member 42 can swing at a certain angle, the intersection point A of the inclined surfaces below the button 21 alternates between the right and left of the intersection point B of the inclined surfaces above the swinging member 42. This allows each press of the button 21 to cause the movable rocker 4 to move in a different direction, thereby switching between different functions. This allows for easy operation, eliminating the need for continuous finger pressure and allowing for flexible switching. Furthermore, after turning off the water supply, the system always returns to its initial state, providing a memory function.

[0077] The working process of the above structure can be roughly divided into three states, as follows:

[0078] State 1: If Figure 11 and Figure 12 As shown, in the initial state, under the pre-tightening force of the spring 02, the sealing head 32 of the center valve plug 3 is always tightly sealed with the sealing surface A1. At this time, water enters the first water diversion hole 141 and water flows out of the first water outlet L1 (the water outlet L2 is closed); under the pre-tightening force of the two positioning beads 53 and 54, the tip B of the swing member 42 falls on the left side of the tip A of the button skeleton 22.

[0079] State 2: If Figures 13 to 16 As shown, the button 21 is pressed downward, and the first inclined surface 221 of the button skeleton 22 cooperates with the fourth inclined surface 424 of the swinging member 42 to apply a downward force. The force is decomposed to generate a force that pushes the center valve plug 3 to move to the left. The positioning bead 53 is pushed to the left by the swinging member 42 and compresses the third return spring 51. The sealing head 32 on the center valve plug 3 is separated from the sealing surface A1 and sealed with the sealing surface A2. At this time, the external force applied by the button skeleton 22 is canceled. When the force of the water pressure acting on the center valve plug 3 is greater than the elastic force of the spring 02, the sealing head 32 on the center valve plug 3 remains sealed with the sealing surface A2. At this time, water flows out of the second water outlet L2 and the first water outlet L1 is closed. At the same time, the positioning bead 53 is reset under the action of the third return spring 51. The positioning bead 53 pushes the swinging member 42 to rotate a certain angle. Finally, the button skeleton 22 is reset, and the tip B of the swinging member 42 is to the right of the tip A of the button skeleton 22, preparing for the next switch. At this time, if the force acting on the center valve plug 3 is less than the elastic force of the second return spring 02 (that is, the water pressure is reduced or the water is turned off), the sealing head 32 of the center valve plug 3 will separate from the sealing surface A2 under the action of the second return spring 02, and seal tightly with the sealing surface A1. At this time, water is still flowing out of the first water outlet L1, or no water is flowing out (that is, the water is cut off), the positioning bead 52 is reset, and the tip B of the swing member 42 is on the left side of the tip A of the button skeleton, that is, it returns to the initial state.

[0080] State 3: If Figures 17 to 20As shown, in state two (water is flowing from the second water outlet L2), the button 21 is pressed downward. The second inclined surface 222 of the button frame 22 cooperates with the third inclined surface 423 of the swinging member 42, driving the center valve plug 3 to the right. The positioning bead 54 is pushed to the right by the swinging member 42 while compressing the fourth return spring 52. The sealing head 32 on the center valve plug 3 disengages from the sealing surface A2 and seals with the sealing surface A1. At this time, water flows from the first water outlet L1, closing the second water outlet L2. Release the button 21 to remove the external force. At this time, the positioning bead 54 is reset by the fourth return spring 52, the swinging member 42 is reset by the positioning bead 54, and the button frame 22 is also reset by the elastic force. The swinging member tip B falls to the left of the button frame 22 tip A, returning to state one.

[0081] In summary, if the water outlet device is flowing normally, the function can be switched from state one to state two to state three, and then back to state one, so that the two functions can be switched cyclically.

[0082] If the water is suddenly turned off or the water pressure drops after switching from state one to state two, causing the back pressure of the center valve plug to be unable to overcome the elastic force of the second return spring 02, state two will directly switch to state one to realize the memory function.

[0083] It should be noted that the angular swing of the swing member 42 is not limited to the current spring drive. The swing angle is to allow the tip B of the swing member 42 to move from the left side of the tip A of the button skeleton 22 to the right side of the tip A of the button skeleton 22.

[0084] The above structure can be widely used in various kitchen, bathroom and pipeline products, such as pull-out heads, three-way valves, tap water and purified water switches, overhead showers, shower heads and spray guns.

[0085] Example 2

[0086] This embodiment 1 is another application of the self-resetting switching structure on a dual-function drawing head.

[0087] like Figures 21 to 23 As shown, a self-resetting switching structure includes a body 1, a button assembly 2, a central valve bolt 3 and a movable rocker rod 4.

[0088] In this embodiment, the functional structures of the body 1, button assembly 2, central valve plug 3 and movable rocker 4 are basically the same as those in embodiment 1, except that:

[0089] In terms of the main structure, first, the second return spring 02 of embodiment 1 is changed from being located between the water diverter 14 and the water inlet 13 to being located between the water inlet 13 and the moving member 41 in embodiment 2.

[0090] Secondly, in embodiment 2, the water outlet assembly 15 corresponds to the first water outlet L1 and is soft water, and corresponds to the second water outlet L2 and is shower water.

[0091] The rest of the structure is basically the same and will not be described here.

[0092] The working process of the above structure is as follows:

[0093] State 1: If Figure 24 and Figure 25 As shown, in the initial state, the swinging member 42 of the movable rocker arm 4 is against the fifth inclined surface 4101, the sealing head 32 is between the sealing surface A1 and the sealing surface A2, and the first water outlet L1 and the second water outlet L2 discharge water at the same time to form icicle water. At this time, the tip A of the button skeleton 22 is on the left side of the tip B of the swinging member 42.

[0094] State 2: If Figures 26 to 30 As shown, when the button 21 is pressed downward, the second inclined surface 222 of the button skeleton 22 cooperates with the third inclined surface 423 to apply a downward force. The force is decomposed, generating a force that pushes the center valve plug 3 to the right and compresses the second reset spring 02 until the sealing head 32 is in contact with the sealing surface A1. At this time, only the first water outlet L1 is discharging water. At this time, the force acting on the button 21 is canceled, and the button skeleton 22 is reset under the action of the first reset spring 01. The positioning bead 54 is reset under the action of the fourth reset spring 52, thereby driving the swing member 42 to be straightened. The water pressure generates a continuous rightward thrust on the center valve plug 3 that is greater than the elastic force of the second reset spring 02, causing the second reset spring 02 to be compressed, and the moving member 41 continues to move to the right until it is in contact with the inner wall of the moving member 41.

[0095] At this time, if the force acting on the center valve plug 3 is less than the elastic force of the second return spring 02 (that is, the water pressure is reduced or the water is turned off), the sealing head 32 of the center valve plug 3 will separate from the sealing surface A1 under the action of the second return spring 02 and return to the initial state, that is, the first water outlet L1 and the first water outlet L2 will discharge water at the same time or not (that is, the water supply is cut off).

[0096] State 3: If Figures 31 to 34 As shown, the second state is connected (water flows out of the first water outlet L1). At this time, the tip A of the button skeleton 22 is on the right side of the tip B of the swing member 42. The button 21 is pressed downward, and the first inclined surface 221 of the button skeleton 22 cooperates with the fourth inclined surface 424 of the swing member 42, and drives the center valve plug 3 to move to the left. The positioning bead 53 is pushed to the left by the swing member 42 and the third return spring 51 is compressed at the same time. The sealing head 32 on the center valve plug 3 is separated from the sealing surface A1 and moves to the left. At this time, water flows out of the first water outlet L1 and the second water outlet L2 at the same time, that is, icicle water.

[0097] When the button 21 is released to remove the external force, the third return spring 51 pushes the positioning bead 53 to return to its original position, and pushes the swing member 42 to return to its original position, that is, to state one.

[0098] In summary, if the water outlet device is flowing normally, the function can be switched from state one to state two to state three, and then back to state one, so that the two functions can be switched cyclically.

[0099] If the water is suddenly turned off or the water pressure drops after switching from state one to state two, causing the back pressure of the center valve plug to be unable to overcome the elastic force of the second return spring 02, state two will directly switch to state one to realize the memory function.

[0100] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A self-resetting switching structure, characterized in that: include: A main body, wherein the main body is provided with a water inlet and a first water outlet and a second water outlet; A button assembly, the button assembly being disposed within the main body and having a first return spring disposed therebetween; the button assembly comprising a button and a button frame, wherein a first inclined surface and a second inclined surface are disposed below the button, the first inclined surface and the second inclined surface being connected at their lower ends; the button frame being in the shape of a human figure, two sets of wedge-shaped blocks being spaced apart within the button frame, each wedge-shaped block having the first inclined surface and the second inclined surface; a sliding block being disposed on the outside of the button frame, and a T-shaped slide rail being disposed within the main body, cooperating with the sliding block; a central valve plug, which can selectively block the first water outlet and the second water outlet, and a second return spring is provided between the central valve plug and the main body; A movable rocker comprises a movable part and a swinging part, and the movable part and the swinging part are pivotally connected, the movable part is linked to the central valve bolt, and the swinging part is matched with the button assembly to realize the movement of the movable part, and a third inclined surface and a fourth inclined surface distributed on the left and right are provided above the swinging part, the upper ends of the third inclined surface and the fourth inclined surface are connected, the second inclined surface matches the third inclined surface, and the first inclined surface matches the fourth inclined surface, and the swinging part comprises a central fixed block and wedge blocks located on both sides of the central fixed block, each wedge block has the third inclined surface and the fourth inclined surface, and the movable part is provided with a mounting groove, the swinging part is provided in the mounting groove, and is pivotally connected to the movable part by a pin, the mounting groove is provided with a fifth inclined surface, and a reset device is provided between the swinging part and the body.

2. A self-resetting switching structure according to claim 1, characterized in that: The reset device comprises a third reset spring and a fourth reset spring, which are respectively arranged on the left and right sides of the swing member through a positioning bead.

3. A self-resetting switching structure according to claim 1, characterized in that: The first water outlet and the second water outlet are respectively provided with a first sealing surface and a second sealing surface; one end of the central valve plug is connected to the moving part, and the other end is provided with a sealing part, which can selectively contact the first sealing surface and the second sealing surface.

4. A self-resetting switching structure according to claim 3, characterized in that: The main body includes a shell and a fixing seat, a water inlet member, a water distribution member and a water outlet assembly arranged in the shell, wherein the water inlet member is connected and cooperated with the water distribution member to form the first sealing surface and the second sealing surface; the water distribution member is connected and cooperated with the water outlet assembly to form the first water outlet path and the second water outlet path; the fixing seat is arranged between the water distribution member and the shell for installing the button assembly.

5. A pulling head, characterized in that: It comprises a self-resetting switching structure as described in any one of claims 1 to 4.

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