Single key switch mechanism and puller

Abstract

The application discloses a single-key switching mechanism and a pull head, which comprise a water channel body and a switching assembly, wherein the switching assembly is installed on the water channel body; the switching assembly comprises a driving key and a moving assembly, the moving assembly comprises a movable groove and a moving block, the movable groove is connected with a movable assembly and can drive the movable assembly to move back and forth; the driving key is provided with two driving surfaces which are staggered, the swing piece is provided with two driven surfaces, the two driving surfaces and the two driven surfaces form two groups of driving relationships one by one, and the moving block is transversely moved along the movable groove to make the two groups of driving relationships be transformed. The single-key switching mechanism and the pull head can realize single-key switching and automatic switching to a default water type, are convenient to use and have better experience.

Description

TECHNICAL FIELD

[0001] The present application relates to a single key switching mechanism and a pull head. BACKGROUND

[0002] The existing kitchen bathroom water outlet terminal water type switching is mainly in the seesaw mode, and some single key mode, but the above all have shortcomings, first, the seesaw is with two ends as the pressing area, through the lever way to switch the water type, so the size of the seesaw button is relatively large compared with the single key form, the appearance is not good-looking, and the user needs to look at the selection of pressing which end first, poor convenience; second, the single key switching water outlet device can realize the basic single key switching function, but because of the ballpoint pen ratchet or heart-shaped ratchet way switching, it cannot default the water type, that is, it cannot realize the function of keeping the default common water type after each water off and water on.

[0003] The existing kitchen pull faucet pull head mainly has two basic water types, one is soft water, and the other is shower water. Soft water is suitable for regular washing because of its water saving and soft feeling, and is the most basic water type of kitchen faucet. Shower water is suitable for washing occasions because of its high impact force and large impact range. Both water types have their own use scenarios in daily life and need to be switched between the two water types from time to time. However, as a relatively high-frequency water type, soft water needs to be used when the faucet is opened at the highest frequency. Therefore, a switching structure needs to be developed to be applied to the pull head, which can realize single key switching and has the function of defaulting water type, and can also consider aesthetics and practicality. SUMMARY

[0004] In order to solve the above technical problems, the purpose of the present application is to provide a single key switching mechanism and a pull head.

[0005] The present application is realized by the following technical scheme: a single key switching mechanism, comprising a water channel body and a switching assembly, the switching assembly is installed on the water channel body; the switching assembly comprises a driving key and a moving assembly, the moving assembly comprises a movable slot and a moving block, the movable slot is connected with the moving assembly and can drive the moving assembly to move back and forth; the driving key is provided with two driving surfaces arranged staggered, the moving block is provided with two driven surfaces, two driving surfaces and two driven surfaces form two groups of driving relationship one by one, the moving block moves transversely along the movable slot to make the two groups of driving relationship change.

[0006] Preferably, it further comprises an auxiliary moving piece, the auxiliary moving piece has two elastic arms arranged staggered.

[0007] Preferably, the moving block has a first contact surface and a second contact surface, and during movement of the moving assembly, the first or second contact surface is capable of compressing one of the elastic arms.

[0008] Preferably, the two elastic arms are respectively arranged on opposite sides of the moving block.

[0009] Preferably, the waterway body is provided with two protrusions, and the protrusions are matched with the elastic arms.

[0010] Preferably, the waterway body is provided with a positioning member, the positioning member is provided with a positioning groove, and the driving key is installed in the positioning groove.

[0011] Preferably, the moving assembly further comprises an auxiliary moving member, the auxiliary moving member comprises a first magnetic member and a second magnetic member which are distributed in a staggered manner, the first magnetic member and the second magnetic member are respectively arranged on two sides of the positioning member, the moving assembly is provided with a magnetic member, and the magnetic member is matched with the first or second magnetic member to drive.

[0012] Preferably, the moving block is further provided with a positioning feature on opposite sides, and the positioning feature is arranged on the same side as the driven surface.

[0013] Preferably, the movable slot has a receiving slot and a connecting slot, the moving assembly is connected to the connecting slot, and the moving block is arranged in the receiving slot; the receiving slot is provided with an opening on both sides, the moving block is provided with a through hole, and a track pin passes through the opening and the through hole to connect the moving block to the movable slot.

[0014] Preferably, the moving assembly is a water distribution assembly, the waterway body is provided with a water passing waterway and a water distribution cavity, the waterway body is provided with a first water outlet and a second water outlet, and the water distribution cavity is provided with a first sealing surface and a second sealing surface; the water distribution assembly has a water distribution sealing member, and the water distribution sealing member is selectively sealed with one of the first sealing surface or the second sealing surface.

[0015] Preferably, the water distribution assembly comprises a water distribution end cover and a water distribution valve rod, the water distribution end cover has a water passing opening, the water passing opening is communicated with the first water outlet, the water distribution end cover is connected with the waterway body to form the water distribution cavity, one end of the water distribution valve rod is connected with the moving block, the other end of the water distribution valve rod has the water distribution sealing member, the water distribution sealing member is arranged in the water distribution cavity, and a return spring is further arranged between an end surface of the water distribution valve rod and the water distribution end cover.

[0016] The application further provides a pull head, comprising a shell, the single-key switching mechanism and a water outlet surface cover, the water channel body is arranged in the shell, and the water outlet surface cover comprises two chambers which are communicated with the first water outlet and the second water outlet respectively.

[0017] The single-key switching mechanism and the pull head can realize single-key switching and automatic switching to a default water type, and the user only needs to press once to realize one-time switching, and the default water type function can make the user not need to frequently switch the high-frequency water type, which is convenient to use and better in experience. Compared with the commonly used seesaw switching mode, the button can be made smaller to make the appearance more simple, and the default water type function is provided, and compared with the switching mechanism which realizes single-key switching by using a ball ratchet or a heart-shaped ratchet, the switching mechanism is better in man-machine property and better in body feeling. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Figure 1 is a sectional view of the present application.

[0020] Figure 2 is an exploded view of the present application.

[0021] Figure 3 is a partial exploded view of the present application.

[0022] Figure 4 is a partial sectional view of the present application.

[0023] Figure 5 is an exploded view of the first embodiment of the switching assembly structure of the present application.

[0024] Figure 6A is a perspective view and a bottom view of the driving key of the present application.

[0025] Figure 6B is a bottom view of the driving key of the present application.

[0026] Figure 6C is a front view of the driving key of the present application.

[0027] Figure 7A is a perspective view of the moving block of the first embodiment of the present application.

[0028] Figure 7B is a bottom view of the moving block of the first embodiment of the present application.

[0029] Figure 8A is a perspective view of the auxiliary moving member of the first embodiment of the present application.

[0030] Figure 8B is a top view of the auxiliary moving member of the first embodiment of the present application.

[0031] Figure 9 is an exploded view of the switching assembly structure of the second embodiment of the present application.

[0032] Figure 10A is a perspective view of the moving block of the second embodiment of the present application.

[0033] Figure 10B is a bottom view of the moving block of the second embodiment of the present application.

[0034] Figure 11 is a structural schematic view of the second embodiment of the present application.

[0035] Figure 12 is an exploded view of the switching assembly structure of the third embodiment of the present application.

[0036] Figure 13 is a switching process schematic view of the switching assembly structure of the third embodiment of the present application.

[0037] Figure 14 is a sectional view of the water distribution assembly of the present application.

[0038] Figure 15 is a perspective view of the water distribution assembly of the present application.

[0039] Figure 16 is a sectional view of the water outlet cover of the present application.

[0040] Figure 17A is a water path schematic view in the initial state of the present application.

[0041] Figure 17B is a water path schematic view in the first pressing state of the present application.

[0042] Figure 17C is a water path schematic view in the external force canceling state of the present application.

[0043] Figure 17D is a water path schematic view in the water interruption state of the present application.

[0044] Figure 17E is a water path schematic view in the second pressing state of the present application.

[0045] Figure 17F is a water path schematic view in the external force canceling state of the present application. DETAILED DESCRIPTION

[0046] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0047] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application. Figure 1 Figure 2 A single-key switching mechanism includes a water channel body 2 and a switching assembly 3 installed on the water channel body 2. In an application, the single-key switching mechanism can be applied to a pull head, wherein the pull head includes a shell 1, the above-mentioned single-key switching mechanism, a water distribution assembly 4 and a water outlet surface cover 5, the above-mentioned water channel body 2 is arranged in the shell 1, and the water outlet surface cover 5 is connected with the shell 1 to realize the function of single-key switching and automatic rotation switching to a default water type. The structure of the above-mentioned assemblies will be described in detail below.

[0048] The water channel body 2

[0049] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application. Figure 3 Figure 4 The water channel body 2 is provided with a first water outlet 21 and a second water outlet 22, and has a water passing channel 20 and a water distribution cavity 23, the first water outlet 21 and the second water outlet 22 are arranged corresponding to the position of the water distribution cavity 23; the water distribution cavity 23 and the water passing channel 20 have a water inlet b, the water paths of the two are communicated through the water inlet b, one end of the water distribution cavity 23 is connected with a water distribution end cover 41, and the other end of the water distribution cavity 23 is connected with a water distribution valve rod 42. Further, the water channel body 2 is further provided with a mounting groove 27, the switching assembly 3 is arranged in the mounting groove 27 to drive the water distribution assembly 4 to move to realize the switching of the water path.

[0050] The switching assembly 3

[0051] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application. Figure 5 Figures 8A-8B ​​​The switching assembly 3 comprises a key cap 31, a driving key 32, a moving assembly 33 and an auxiliary moving piece 34. The driving key 32 is connected with the key cap 31. The driving key 32 is considered as an initial position when the driving key 32 does not drive the moving block 3b to move and is stationary relative to the water channel body 2. The driving key 32 is considered as a driving position when the driving key 32 drives the moving block 3b to move until the moving block 3b is stationary relative to the water channel body 2. The mounting groove 27 of the water channel body is provided with a positioning piece 35. The upper end of the positioning piece 35 is provided with a positioning groove 35a. The driving key 32 is installed in the positioning groove 35a, thereby limiting the driving key 32 to move back and forth between the initial position and the driving position relative to the water channel body, ensuring the reliability of the working. Of course, the positioning piece can be directly formed integrally with the water channel body as long as the driving key can be limited to move back and forth between certain positions. The positioning piece 35 is further provided with a spring piece 36. The spring piece 36 can provide a certain power for the driving key to recover from the driving position to the initial position. Figures 6A-6C The bottom end of the driving key 32 is provided with a first driving surface 32a and a second driving surface 32b. The first driving surface 32a and the second driving surface 32b are arranged in a staggered manner. In a preferred embodiment, the first driving surface 32a or the second driving surface 32b is an inclined surface. The first driving surface 32a and the second driving surface 32b are distributed on opposite sides of the bottom end of the driving key. The first driving surface 32a and the second driving surface 32b are inclined relative to the central axis direction of the driving key. That is, the inclined surfaces of the first driving surface 32a and the second driving surface 32b are arranged in opposite directions. Further, the two ends of the driving key 32 are provided with positioning blocks 321. The positioning blocks can cooperate with the positioning grooves to ensure that the driving key moves linearly in a certain direction.

[0052] The mobile assembly 33 is installed in the installation groove 27 of the waterway body, and the mobile assembly 33 comprises a movable groove 3a and a mobile block 3b. The movable groove 3a has a containing groove c1 and a connecting groove c2, the water valve rod is connected with the movable groove 3a through the connecting groove c2, the mobile block 3b is placed in the containing groove c1, and the containing groove c1 is provided with an opening d1 on both sides. The mobile block 3b is also provided with a through hole d2, and a track pin d3 passes through the openings d1 and the through hole d2 so that the mobile block is connected to the movable groove. The upper end of the mobile block 3b has a first driven surface 33a and a second driven surface 33b. The first driven surface 33a cooperates with the first driving surface 32a to drive, and the second driven surface 33b cooperates with the second driving surface 32b to drive, that is, the mobile block 3b and the driving key 32 form two sets of corresponding driving relationships. During the driving of the mobile block 3b by the driving key 32, only one driving surface can drive the corresponding driven surface, which is regarded as an effective driving relationship at this time. Further, the mobile block 3b is provided with positioning features g on the opposite sides. The positioning features g and the driven surfaces are arranged on the same side of the mobile block 3b. The positioning features g can effectively limit the direction of movement of the mobile block on the movable groove, and ensure the formation of an effective driving relationship.

[0053] Referring to the drawings Figure 7A and the drawings Figure 7B It is the first embodiment of the auxiliary mobile structure. The elastic force of the auxiliary mobile member 34 can be used to realize the mutual conversion of the effective driving relationship after the external force is removed. The bottom end of the mobile block 3b is provided with a first contact surface 3e and a second contact surface 3f. The contact surfaces are arranged corresponding to the positions of the elastic arms. When the driving key 32 drives the mobile block 3b to move, the mobile block 3b can drive the movable groove 3a connected thereto to move at the same time. During the movement, the first or second contact surface compresses one of the elastic arms 34b to cause elastic deformation, and the elastic arm 34b is driven when it returns to its original state, so that the mobile block 3b moves within the range allowed.

[0054] Referring to the drawings Figure 8A and 8BThe aforementioned auxiliary moving component 34 is installed in the mounting groove 27 of the waterway body. The auxiliary moving component 34 includes two elastic arms 34b, which are offset from each other. These elastic arms 34b are elastic and can undergo elastic deformation under external force. After the external force on the drive key disappears, the elastic arms return to their original shape. When the aforementioned moving block 3b is driven by the drive key 32 and thus moves, one of the elastic arms 34b of the aforementioned auxiliary moving component undergoes elastic deformation (deformation in the direction of the arrow in the figure). After the driving external force disappears, the elastic arm 34b returns to its original shape under the action of elastic force. At the same time, the elastic force of the elastic arm pushes the moving block 3b to move in the direction perpendicular to the moving groove 3a (i.e., pushes the moving block 3b to move along the axis of the track pin d3), thereby realizing the change of effective driving relationship.

[0055] In the second embodiment, refer to the appendix Figure 9 ~Appendix Figure 11 The auxiliary moving parts 34 can also be distributed on the moving block 3b, thereby realizing the mutual conversion of the effective driving relationship after the external force is removed through the elastic action of the auxiliary moving parts. The auxiliary moving parts 34 include two elastic arms 34b', which are respectively staggered on opposite sides of the moving block 3b. At the same time, the waterway body 2 is provided with two protrusions 2a, which can cooperate with the elastic arms 34b'. When the drive key 32 drives the moving block 3b to move forward, the elastic arm 34b' on one side of the moving block 3b can cooperate with the protrusion 2a to deform the elastic arm. If the external force is removed, the elastic arm 34b' then returns to its shape, thereby providing power for the movement of the moving block along the movable groove, and thus promoting the conversion of the effective driving relationship.

[0056] See attached document Figure 12 This is the third embodiment of the auxiliary moving component structure. This embodiment only describes the parts that are different from the first embodiment, and the same content will not be repeated. The switching component 3 includes a keycap, a drive key 32, a moving component 33, and an auxiliary moving component 34. The moving component 33 and the auxiliary moving component 34 are mutually converted in terms of effective driving relationship after the external force is removed by using a magnetic relationship. The auxiliary moving component 34 includes a first magnetic component A1 and a second magnetic component A2. The first magnetic component A1 and the second magnetic component A2 are distributed on both sides of the positioning component 35, and the first magnetic component A1 and the second magnetic component A2 are staggered. The moving block 3b is provided with a magnetic component B1. The magnetic component B1 and the first or second magnetic component A1 or A2 can move the moving block 3b in the movable groove 3a through the action of magnetic force, such as repulsive force or attractive force, and its moving direction is perpendicular to the linear moving direction of the movable groove, thereby realizing the conversion of the effective driving relationship.

[0057] See attached document Figure 13In the default state (H1 state), the first magnetic member A1 interacts with the magnetic member B1, at this time, the first driving surface 32a of the driving key and the first driven surface 33a are in effective driving relationship, at this time, the water passage is communicated with the first water outlet; when the driving key 32 drives the moving block 3b to move (H2 state), that is, when the first driving surface 32a cooperates with the first driven surface 33a, the moving block 3b moves forward and can simultaneously drive the movable slot 3a connected thereto to move forward synchronously, the communication between the water passage and the first water outlet is blocked, the water passage is communicated with the second water outlet, and the movable slot is kept in this position under the action of the water pressure difference; after the external force is removed (H3 state), the moving block 3b moves transversely along the straight line moving direction perpendicular to the movable slot 3a under the interaction of the magnetic member B1 and the second magnetic member A2, at this time, the effective driving relationship is converted from the driving relationship between the first driving surface 32a and the first driven surface 33a to the driving relationship between the second driving surface 32b and the second driven surface 33b, and the effective driving relationship is changed; when the driving key 32 drives the moving block 3b to move (H4 state), that is, when the second driving surface 32b cooperates with the second driven surface 33b, it can drive the moving block 3b and the movable slot 3a to move backward, and the water passage is communicated with the first water outlet; when the external force of the driving key is removed (H5 state), the moving member 3b moves transversely along the other side of the straight line moving direction perpendicular to the movable slot 3a under the interaction of the magnetic member B1 and the first magnetic member A1, at this time, the effective driving relationship returns to the initial state, and if the water is cut off, the water distribution assembly pushes the movable slot and the moving block to reset under the action of the reset spring, and automatically switches to the default initial state.

[0058] Water distribution assembly

[0059] Refer to the accompanying drawings Figure 14 and the accompanying drawings Figure 15The water diversion assembly 4 comprises a water diversion end cover 41 and a water diversion valve rod 42. The water diversion end cover 41 is connected with the water channel body 2, and a first sealing ring a1 is arranged between the water diversion end cover 41 and the water channel body 2. The water diversion end cover 41 cooperates with the water channel body 2 to form the water diversion cavity 23. The water diversion end cover 41 is provided with a water passing hole 4a and a connecting rod 4b. The water passing hole 4a is in communication with the first water outlet 21. The connecting rod 4b is connected with the water diversion valve rod 42. In addition, the water diversion end cover 41 is provided with a first sealing surface p1 located in the water diversion cavity 23. The water diversion cavity 23 is further provided with a second sealing surface p2 located on the water channel body 2 and between the first sealing surface p1 and the second water outlet 22. The water diversion valve rod 42 comprises a movable rod 42a and a water diversion sealing member 42b. The movable rod 42a is connected with the movable slot 3a through a connecting slot c2, and is driven to move axially through the movable slot. One end of the movable rod 42a is provided with a sealing member q2 to form the water diversion sealing member 42b. The effective pressure bearing areas s1 and s2 of the water diversion sealing member 42b on both sides in the water flow are different, thereby forming a pressure difference. In the water passing state, the water diversion valve rod can be kept at a certain position. The water diversion sealing member is provided with a through hole q3. The connecting rod 4b is connected with the water diversion valve rod 42 through the through hole q3. The water diversion valve rod 42 can move axially along the connecting rod 4b, so that the water passing channel 20 is in communication with one of the first water outlet 21 and the second water outlet 22.

[0060] Preferably, the water diversion valve rod 42 and the water channel body 2 are further provided with a sealing member f to ensure the sealing of the two and prevent water leakage.

[0061] Further, the end surface of the water diversion valve rod 42 and the water diversion end cover 41 are further provided with a reset spring 6. The reset spring can keep the water diversion valve rod at a default position in the low water pressure or no water pressure state, so that the water diversion sealing member can be in contact with the second sealing surface to block the communication between the second water outlet and the water passing channel.

[0062] Water outlet surface cover 5

[0063] Referring to the drawings Figure 16 The water outlet surface cover 5 comprises two cavities 51 and 52. One of the cavities 51 is in communication with the first water outlet 21, and the other cavity 52 is in communication with the second water outlet 22. The two cavities correspond to different water outlet modes, such as soft water outlet mode and shower water outlet mode, thereby being able to meet different water outlet scenes of the puller.

[0064] The working mode of the single key switching mechanism will be described below with reference to the drawings. The structure of the auxiliary moving part of the first embodiment is taken as an example for description. Referring to the drawings Figure 17A, initial state, after the water, the water valve stem 42 in the reset spring 6 elastic force, its water distribution sealing element 42b and the second sealing surface p2 contact seal, that is, the water distribution valve stem 42 is in the second position, at this time, the first water outlet 21 and water channel 20 communication, water flow from the first water outlet 21 through the water distribution end cover water outlet 4a, then into the water outlet surface cover 5 one of the chambers 51 after the water for users, for example, its water mode is soft water outlet; refer to the attached Figure 17B When the first time pressing force is applied to the drive key 32, the first drive surface 32a of the bottom end of the drive key drives the first driven surface 33a of the moving block, the moving block 3b drives the activity slot 3a to move longitudinally along the water channel body, the activity slot 3a also synchronously drives the water distribution valve stem 42 to move forward until its water distribution sealing element 42b contacts the first sealing surface p1, the water distribution valve stem 42 moves from the second position to the first position, at this time, the communication between the water channel 20 and the first water outlet 21 is blocked, the second water outlet 22 is communicated with the water channel 20, and in the movement of the moving block, the first contact surface 3e of the moving block can compress the elastic arm 34b of one of the auxiliary moving pieces to cause a certain deformation of the elastic arm; refer to the attached Figure 17C When the pressing force is removed, the drive key 32 returns to the initial position under the action of the spring member 36, and the moving block 3b moves transversely (i.e. along the trajectory pin, the arrow direction in the figure) under the action of the compressed elastic arm 34b, at this time, because the water pressure difference is generated due to the difference between the effective pressure areas s1 and s2 of the water distribution valve stem 42, the water pressure can keep the water distribution valve stem 42 at the first position, at this time, the effective drive relationship is converted from the cooperation relationship between the first drive surface 32a and the first driven surface 33a to the cooperation relationship between the second drive surface 32b and the second driven surface 33b; if the water is suddenly cut off at this time, refer to the attached Figure 17D The water distribution valve stem 42 will move to the second position under the action of the reset spring 6, at this time, the first water outlet 21 is reconnected with the water channel 20, and the communication between the second water outlet 22 and the water channel is blocked, the next time the user uses water, the pull head is still in the state of the first water outlet 21, at this time, the moving block 3b moves to the initial position (i.e. the arrow direction in the figure) under the action of the elastic force of the elastic arm 34b, at this time, the first drive surface 32a and the first driven surface 33a are in effective drive relationship, and the original communication state between the water channel and the first water outlet is automatically switched; if the pull head normally discharges water, no water cut-off occurs, refer to the attached Figure 17EWhen the user presses the driving key 32 for the second time, the second driving surface 32b at the bottom end of the driving key 32 drives the second driven surface 33b, and the water distribution valve rod 42 moves backward until the water distribution sealing element 42b thereof contacts the second sealing surface p2, at which time the first water outlet 21 is in communication with the water passage 20, the water distribution valve rod 42 is at the second position, and the second contact surface 3f can compress the other elastic arm 34b to deform it; refer to the accompanying drawings Figure 17F When the external force is removed, the driving key 32 returns to the initial position under the action of the spring member 36, the moving block 3b moves laterally (i.e., moves along the other side of the track pin) under the action of the compressed elastic arm 34b, at which time the water distribution valve rod 42 is still at the second position, and the effective driving relationship at this time is converted from the cooperation relationship between the second driving surface 32b and the second driven surface 33b to the cooperation relationship between the first driving surface 32a and the first driven surface 33a. Through the above working mode, it can be known that the single-key pull head of the present application can realize the switching of different water paths by mutual conversion between different groups of effective driving relationships, and can also meet the requirement of automatically switching the water path to the default commonly used water path after the pull head stops water output. In this way, the single-key switching mechanism of the present application can realize both single-key switching and automatic switching to the default water type, and the user only needs to press once to realize one-time switching, and has the function of default water type, which can let the user use the frequently used water type without frequent switching, is convenient to use, and has better experience.

[0065] The above description shows and describes the preferred embodiments of the present application, as previously described, it should be understood that the present application is not limited to the forms disclosed herein, should not be considered as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the inventive concept described herein by the above teaching or related art or knowledge. Any modification and change made by those skilled in the art without departing from the spirit and scope of the present application shall be within the protection scope of the claims of the present application.

Claims

1. A single key switching mechanism, characterized by, The utility channel body and the switching assembly are installed on the utility channel body; the switching assembly includes a driving key and a moving assembly, the moving assembly includes a movable slot and a moving block, the movable slot is connected with the moving assembly and can drive the moving assembly to move back and forth; the driving key is provided with two driving surfaces arranged staggeredly, the moving block is provided with two driven surfaces, and the two driving surfaces and the two driven surfaces form two sets of driving relationships one by one; the moving block moves transversely along the movable slot to make the two sets of driving relationships change; The auxiliary moving part is provided with two elastic arms arranged staggeredly; The moving block is provided with a first contact surface and a second contact surface, and the first or second contact surface can compress one of the elastic arms during the movement of the moving assembly; The two elastic arms are arranged on opposite sides of the moving block respectively; The utility channel body is provided with a positioning part, the positioning part is provided with a positioning slot, and the driving key is installed in the positioning slot.

2. A single key switching mechanism according to claim 1, wherein The utility channel body is provided with two protrusions, and the protrusions cooperate with the elastic arms.

3. A single key switching mechanism according to claim 1, wherein The auxiliary moving part includes a first magnetic part and a second magnetic part arranged staggeredly, the first magnetic part and the second magnetic part are arranged on the two sides of the positioning part respectively, a magnetic part is arranged in the moving assembly, and the magnetic part cooperates with the first or second magnetic part to drive.

4. A single key switching mechanism according to claim 1, wherein The moving block is further provided with a positioning feature on opposite sides, and the positioning feature and the driven surface are arranged on the same side respectively.

5. A single key switching mechanism as claimed in claim 1, wherein, The movable slot has a receiving slot and a connecting slot, the moving assembly is connected to the connecting slot, and the moving block is arranged in the receiving slot; the receiving slot is provided with an opening on both sides, the moving block is provided with a through hole, and a track pin passes through the opening and the through hole to connect the moving block to the movable slot.

6. A single key switching mechanism as claimed in claim 1, wherein, The moving assembly is a water distribution assembly, the utility channel body has a water passage and a water distribution cavity, the utility channel body is provided with a first water outlet and a second water outlet, and the water distribution cavity is provided with a first sealing surface and a second sealing surface; the water distribution assembly has a water distribution sealing part, and the water distribution sealing part selectively seals one of the first sealing surface and the second sealing surface.

7. A single key switching mechanism according to claim 6, wherein The water distribution assembly includes a water distribution end cover and a water distribution valve rod, the water distribution end cover has a water passage, the water passage is communicated with the first water outlet, and the water distribution end cover is connected with the utility channel body to form the water distribution cavity; one end of the water distribution valve rod is connected with the moving block, the other end of the water distribution valve rod has the water distribution sealing part, and the water distribution sealing part is arranged in the water distribution cavity; and a return spring is arranged between the end surface of the water distribution valve rod and the water distribution end cover.

8. A puller head characterized by, The utility channel body is arranged in the shell, and the water outlet surface cover includes two cavities, and the two cavities are communicated with the first water outlet and the second water outlet respectively.

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