Back pressing mechanism

Abstract

The utility model discloses a back pressing mechanism which comprises a main body, a water channel is arranged in the main body, a second water channel and a first water channel capable of being communicated with a spray gun nozzle are arranged on the water channel, a water distribution cavity capable of being communicated with the first water channel or the second water channel is arranged in the water channel, and a movable center bolt is arranged in the water distribution cavity. A key is arranged on the back face of the main body, one end of the connecting rod is connected with one end of the center bolt, the other end of the connecting rod can be connected with the key in a matched mode, and pressing of the key can drive the connecting rod to rotate, so that the connecting rod drives the center bolt to move, and the main body is switched to the spray gun nozzle to discharge water. The original space can be effectively utilized, the water outlet function of the spray gun nozzle is achieved under the condition that the thickness of an original product is not increased, and the space utilization rate is better.

Description

Technical Field

[0001] The utility model relates to a back pressing mechanism. Background Art

[0002] The existing shower heads with spray guns have a relatively thick structure due to the layout design of the switching structure. The overall structure is bulky, which seriously affects the operating experience of the shower head, especially for users with relatively small hands. At the same time, the appearance is not beautiful. Moreover, it is difficult to press under high pressure, resulting in the inability to switch to the spray gun to discharge water, and the button may not be reset. Summary of the invention

[0003] In order to solve the above technical problems, the purpose of the utility model is to provide a back pressing mechanism.

[0004] The utility model is realized by the following technical solutions:

[0005] A back pressing mechanism comprises a main body, a water channel is arranged in the main body, a second water channel and a first water channel which can be connected to a spray gun nozzle are arranged on the water channel, a water diversion chamber which can be connected to the first water channel or the second water channel is arranged in the water channel, a movable center bolt is arranged in the water diversion chamber, a button is arranged on the back of the main body, and also comprises a connecting rod whose middle part is hinged in the main body, one end of the connecting rod is connected to one end of the center bolt, and the other end of the connecting rod can be connected with the button, and pressing the button can drive the connecting rod to rotate, so that the connecting rod drives the center bolt to move, so as to realize the switching of the main body to the spray gun nozzle to discharge water.

[0006] In the embodiment of the utility model, the moving direction of the central pin can be perpendicular to the thickness direction of the main body.

[0007] In the embodiment of the utility model, a spring is further provided in the water channel, one end of the spring is connected to the other end of the center bolt, and the other end of the spring is cooperatively connected to the water channel.

[0008] In an embodiment of the utility model, a first sealing gasket that can cooperate with the inner wall of the water diversion chamber is provided at the other end of the center plug, and a cavity for placing a spring is formed between the first sealing gasket and the water channel. The cavity is located at the other end of the spring and a pressure balance hole is provided.

[0009] In the embodiment of the utility model, a pin is provided on the water channel, the middle part of the connecting rod is sleeved on the pin, the other end of the connecting rod is spherically connected to the center bolt, and the other end of the connecting rod is provided with a guiding inclined surface that can cooperate with the button.

[0010] In the embodiment of the utility model, the connecting rod is L-shaped, and an arc-shaped guide plate capable of matching with the middle part of the connecting rod is arranged on the peripheral side of the pin shaft.

[0011] In an embodiment of the utility model, a water inlet is provided in the middle of one end of the water channel, and the water inlet is connected to the middle of the water diversion chamber. The first water channel and the second water channel are distributed on the left and right sides of the water channel, and the first water channel is close to one end of the center plug.

[0012] In an embodiment of the utility model, a first water outlet and a second water outlet distributed on the left and right are provided in the water diversion chamber, and a first sealing ring capable of sealing the first water outlet and the second water outlet is provided on the periphery of the center plug; when the button is not pressed, the first sealing ring remains sealedly connected with the first water outlet, and water flows from the water inlet through the second water outlet to the second water channel; when the button is pressed, the center plug moves to make the first sealing ring sealedly connected with the second water outlet, and water flows from the water inlet through the first water outlet to the first water channel and the spray gun nozzle.

[0013] In the embodiment of the utility model, a guide sleeve is arranged in the water diversion cavity, the first water outlet is arranged on the side of the guide sleeve close to the water inlet, and a water hole which can be connected with the first water channel is arranged on the peripheral side wall of the guide sleeve.

[0014] In the embodiment of the utility model, a second sealing gasket is further provided between the outer periphery of the center plug and the inner peripheral wall of the guide sleeve, and a second sealing ring is provided between the outer periphery of the guide sleeve and the inner peripheral wall of the water diversion chamber.

[0015] In the embodiment of the utility model, a water outlet panel is arranged on the front of the main body, the water outlet panel can be connected with the second water channel, the spray gun nozzle is arranged on the top of the main body, and the water channel defaults to water flow through the second water channel.

[0016] The back pressing mechanism of the utility model has the following beneficial effects: higher space utilization, realizing the function of water discharge from the spray gun nozzle without increasing the thickness of the original shower product, simple overall structure and low additional cost; even under high pressure, there will be no button rebound failure and heavy feeling when pressing, making the pressing operation easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a top view of the utility model.

[0019] Figure 2 It is an exploded view of the utility model.

[0020] Figure 3 This is a schematic diagram of the coordination of the waterway in the utility model. Figure 1 .

[0021] Figure 4 This is a schematic diagram of the coordination of the waterway in the utility model. Figure 2 .

[0022] Figure 5 It is a schematic diagram of water passing through the first water path in the utility model.

[0023] Figure 6 It is a schematic diagram of the second water path of the utility model. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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.

[0028] In the present utility model, 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.

[0029] Referring to the drawings of the specification, a back pressing mechanism includes a main body 10, which can also be called a shell. A water channel 20 is arranged in the main body, and a second water channel 22 and a first water channel 21 that can be connected to the spray gun nozzle 11 are arranged on the water channel. When water is discharged from the first water channel, it is the spray gun nozzle that discharges water, and when water is discharged from the second water channel, it is the water outlet panel that discharges water. A water diversion chamber 28 that can be connected to the first water channel or the second water channel is arranged in the water channel. After the water flow enters the water diversion chamber from the water inlet end, water is divided and discharged from the first water channel or the second water channel. A movable center plug 30 is arranged in the water diversion chamber, and a button is arranged on the back of the main body. 12, also includes a connecting rod 40 hinged in the middle of the main body, one end of the connecting rod is connected to one end of the center bolt, used to drive the center bolt to move horizontally, the front-to-back direction can be the thickness direction of the main body, the other end of the connecting rod can be connected with a button, pressing the button can drive the connecting rod to rotate, so that the connecting rod drives the center bolt to move, so that the main body is switched to the spray gun nozzle to discharge water. In the default state, the first water path is blocked and the second water path is open. Only by pressing the button to drive the center bolt to move can the second water path be shut off and the first water path be open. When the button is released, the center bolt can be reset and restored to the default state.

[0030] In one embodiment of the utility model, the moving direction of the center pin can be perpendicular to the thickness direction T of the main body. It can move left and right along the main body (in the direction W of the width of the main body) or along the length direction L of the main body. This ensures that the thickness of the main body will not increase when the center pin moves, thereby ensuring that the original thickness of the main body remains unchanged.

[0031] Preferably, a spring 50 is also provided in the water channel, one end of the spring is connected to the other end of the center bolt, and the other end of the spring is connected to the water channel. The other end of the center bolt is provided with a first sealing gasket 61 that can cooperate with the inner peripheral wall of the water diversion cavity, and a cavity 29 for placing the spring is formed between the first sealing gasket and the water channel. The cavity is located at the other end of the spring and is provided with a pressure balance hole 23. The cavity is not airtight, which can make it easier to press the button. The spring can overcome the water pressure, reset the center bolt, the connecting rod and the button, and restore the main body to the default state.

[0032] Furthermore, a pin 24 is provided on the waterway, the middle part of the connecting rod is sleeved on the pin, and the other end of the connecting rod is spherically connected to the center bolt, similar to the connection method of a spherical joint, so that the connecting rod can smoothly push the center bolt to move horizontally, and the other end of the connecting rod is provided with a guide slope 41 that can cooperate with the button. Through the cooperation of the guide slope, the button drives the connecting rod to rotate around the pin, thereby realizing the horizontal movement of the center bolt. The connecting rod is L-shaped, and the peripheral side of the pin is provided with an arc-shaped guide plate 25 that can cooperate with the middle part of the connecting rod. The center bolt in the utility model will only move horizontally and will not move forward and backward, ensuring the connecting rod, so that the thickness of the main body does not need to be increased, and the space can be better utilized.

[0033] Referring to the attached drawings of the specification, a water inlet 26 is provided in the middle of one end of the water channel, and the water inlet is connected to the middle of the water diversion chamber. The first water channel and the second water channel are distributed on the left and right sides of the water channel. The first water channel is close to one end of the center plug. Because the spring is at the other end of the center plug, the side close to the spring is the second water channel. Specifically, it can be said that the second water outlet is closer to the spring side.

[0034] Preferably, the water-dividing chamber is provided with a first water outlet 271 and a second water outlet 272 distributed on the left and right, and a first sealing ring 62 capable of sealing the first water outlet and the second water outlet is provided on the periphery of the center plug; when the button is not pressed, the first sealing ring remains sealed and connected with the first water outlet, and water flows from the water inlet through the second water outlet to the second water channel, which is the default (initial) state; when the button is pressed, the center plug moves to make the first sealing ring sealed and connected with the second water outlet, and water flows from the water inlet through the first water outlet to the first water channel and the spray gun nozzle.

[0035] Furthermore, a guide sleeve 70 is provided in the water diversion chamber, the first water outlet is provided on the side of the guide sleeve close to the water inlet, and a water hole 71 which can be connected with the first water channel is provided on the peripheral wall of the guide sleeve. A second sealing gasket 63 is also provided between the outer periphery of the center plug and the inner peripheral wall of the guide sleeve, and a second sealing ring 64 is provided between the outer periphery of the guide sleeve and the inner peripheral wall of the water diversion chamber. Two second sealing rings are provided, which are respectively located on the lateral sides of the water hole.

[0036] Furthermore, a water outlet panel 13 is provided on the front of the main body, and the water outlet panel can be connected to the second water channel. The spray gun nozzle is arranged on the top of the main body, and the water channel defaults to water flow through the second water channel.

[0037] The utility model is more specific: by toggling the dial button of the water outlet panel left and right, the water outlet of the water outlet panel can be switched. There is a button on the back of the main body. After pressing, the water outlet panel turns off the water and no longer discharges water, and the spray gun nozzle at the spray gun position discharges water. There is an assembly chamber (that is, a water distribution chamber) for the center bolt in the waterway, and a reserved pressure balance hole is provided at the bottom of the assembly chamber. This function ensures pressure balance and does not cause high water pressure, and the button cannot be used. After the sealing gaskets and the first sealing ring are installed at both ends of the center bolt, they are inserted into the guide sleeve, and the whole is assembled into the waterway, and the middle part of the connecting rod is inserted into the pin shaft. The button is installed in the main body and abuts with the connecting rod, and can be pressed and rotated. Because of the self-reset function of the spring, the center bolt remains outward, and the water outlet waterway of the water outlet panel remains open, that is, the default water outlet, and the first waterway remains in a state of no water. After pressing the button cap, the button press drives the connecting rod, and the connecting rod drives the center bolt to move to the right. After the center bolt is pressed in, the second waterway is blocked by the first sealing ring, and the first waterway is opened for water. Water is introduced into the spray gun nozzle for water discharge. After releasing the hand, the spring resets, the center bolt moves to the right and pushes the connecting rod outward. The connecting rod rotates to drive the button cap to reset and return to the default second waterway for water flow. The center bolt has three sealing groove positions, and the cross-sectional areas of these three positions are close. This function ensures pressure balance. There will be no high water pressure and the button cannot be used. The center bolt structure cooperates with the spring and the pressure balance hole to have a pressure balance effect. This function ensures that the button can be used normally under high water pressure and will not be unable to reset or press. The connecting rod structure can reduce the button pressing force value through the balance of two forces of the lever. In the figure, a spray gun nozzle is set on the top of the main body, and the water flows in from the bottom of the main body. The moving direction of the center bolt is horizontal, which is perpendicular to the water inlet direction (the thickness direction of the main body), which can effectively reduce the thickness of the main body and make reasonable use of space.

[0038] The above description shows and describes the preferred embodiments of the utility model. As mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A back pressing mechanism, comprising a main body, a water channel is arranged in the main body, a second water channel and a first water channel which can be connected to a spray gun nozzle are arranged on the water channel, characterized in that: The water channel is provided with a water diversion chamber which can be connected with the first water channel or the second water channel, and the water diversion chamber is provided with a movable center bolt. A button is provided on the back of the main body, and it also includes a connecting rod whose middle part is hinged in the main body, one end of the connecting rod is connected with one end of the center bolt, and the other end of the connecting rod can be connected with the button. Pressing the button can drive the connecting rod to rotate, so that the connecting rod drives the center bolt to move, thereby realizing the switching of the main body to the spray gun nozzle to discharge water.

2. A back pressing mechanism according to claim 1, characterized in that: The moving direction of the central pin can be perpendicular to the thickness direction of the main body.

3. A back pressing mechanism according to claim 2, characterized in that: A spring is also arranged in the water channel, one end of the spring is connected to the other end of the center bolt, and the other end of the spring is cooperatively connected to the water channel.

4. A back pressing mechanism according to claim 3, characterized in that: The other end of the center bolt is provided with a first sealing gasket that can cooperate with the inner peripheral wall of the water distribution cavity. A cavity for placing a spring is formed between the first sealing gasket and the water channel. The cavity is located at the other end of the spring and is provided with a pressure balance hole.

5. A back pressing mechanism according to any one of claims 1 to 4, characterized in that: A pin is arranged on the water channel, the middle part of the connecting rod is sleeved on the pin, the other end of the connecting rod is spherically connected with the central bolt, and the other end of the connecting rod is provided with a guiding inclined surface which can match with the key.

6. A back pressing mechanism according to claim 5, characterized in that: The connecting rod is L-shaped, and an arc-shaped guide plate capable of matching with the middle part of the connecting rod is arranged on the peripheral side of the pin shaft.

7. A back pressing mechanism according to any one of claims 1-4 and 6, characterized in that: A water inlet is provided in the middle of one end of the water channel, and the water inlet is connected to the middle of the water diversion chamber. The first water channel and the second water channel are distributed on the left and right sides of the water channel, and the first water channel is close to one end of the center plug.

8. A back pressing mechanism according to claim 7, characterized in that: The water-dividing chamber is provided with a first water outlet and a second water outlet distributed on the left and right, and a first sealing ring capable of sealing the first water outlet and the second water outlet is provided on the periphery of the center plug; when the button is not pressed, the first sealing ring remains sealedly connected with the first water outlet, and water flows from the water inlet to the second water channel through the second water outlet; when the button is pressed, the center plug moves to make the first sealing ring sealedly connected with the second water outlet, and water flows from the water inlet to the first water channel and the spray gun nozzle through the first water outlet.

9. The back pressing mechanism according to claim 8, characterized in that: A guide sleeve is arranged in the water diversion chamber, the first water outlet is arranged on the side of the guide sleeve close to the water inlet, and a water hole that can be connected with the first water channel is arranged on the side wall of the guide sleeve; a second sealing gasket is also arranged between the outer periphery of the center plug and the inner peripheral wall of the guide sleeve, and a second sealing ring is arranged between the outer periphery of the guide sleeve and the inner peripheral wall of the water diversion chamber.

10. A back pressing mechanism according to any one of claims 1-4, 6, 8-9, characterized in that: A water outlet panel is arranged on the front of the main body, and the water outlet panel can be connected with the second water channel. The spray gun nozzle is arranged on the top of the main body, and the water channel defaults to water flow through the second water channel.

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