Cleaning brush

Abstract

The cleaning brush comprises a brush rod, a negative pressure assembly and a liquid storage bottle, and the brush rod is provided with a liquid outlet; the negative pressure assembly comprises a push rod and a negative pressure part, the negative pressure part is provided with a negative pressure channel, the push rod is provided with a liquid inlet, the liquid inlet is communicated with the liquid outlet, the push rod is slidably arranged in the negative pressure channel, the pressure in the negative pressure channel is changed when the push rod slides, and the liquid inlet is selectively communicated with the negative pressure channel; the negative pressure assembly is arranged in the liquid storage bottle, and the negative pressure channel is selectively communicated with the liquid storage bottle through a valve body controlled by the pressure in the negative pressure channel. Compared with the prior art, cleaning liquid or water is sprayed out through reciprocating motion of the push rod in the negative pressure channel, equipment such as an air pump does not need to be used, and the production cost is saved; the liquid outlet is formed in the brush rod, and the brush rod extends into the bottle, so that cleaning liquid or water can be accurately and quickly sprayed to any part in the bottle, and the cleaning liquid or water is effectively prevented from being spilled out of the bottle.

Description

TECHNICAL FIELD

[0001] The utility model discloses an embodiment relates to the technical field of cleaning brush, especially relates to a cleaning brush. BACKGROUND

[0002] The cleaning brush is a kind of tool mainly used for cleaning bottle.The existing cleaning brush is divided into manual cleaning brush and electric cleaning brush, when using manual cleaning brush, cleaning liquid needs to be poured into bottle manually, it is very inconvenient in actual cleaning process, and cleaning liquid usually cannot be poured into bottle smoothly due to the relatively narrow mouth of bottle, which greatly affects cleaning work;And electric cleaning brush is usually provided with air pump, and the ejection of cleaning liquid is realized by air pump, but the structure process of electric liquid taking is relatively complex, so that product cost increases more, economic efficiency is poorer, and the overall weight is increased, and user experience is reduced. CONTENT OF UTILITY MODEL

[0003] In view of the deficiencies of prior art, the utility model provides a kind of cleaning brush, it is convenient to send cleaning liquid into bottle, avoid cleaning liquid to spill.

[0004] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A kind of cleaning brush, including brush rod, negative pressure component and liquid storage bottle, brush rod is set with liquid outlet;Negative pressure component includes push rod and negative pressure piece, the negative pressure piece is provided with negative pressure passage, the push rod is provided with liquid inlet, the liquid inlet is communicated with the liquid outlet, the push rod is slidably arranged in the negative pressure passage, the push rod slides and makes the pressure change in the negative pressure passage, and the liquid inlet can selectively communicate with the negative pressure passage;The negative pressure component is located in the liquid storage bottle, and the negative pressure passage is selectively communicated with the liquid storage bottle by the valve body controlled by the pressure in the negative pressure passage.

[0006] As one of the implementation ways, the negative pressure component includes elastic member, the elastic member is arranged in the negative pressure piece, and is elastically abutted between the push rod and the negative pressure piece respectively.

[0007] As one of the implementation ways, the negative pressure component includes plugging member, the plugging member is connected to the inner wall of the negative pressure passage, the liquid inlet is set on the side surface of the push rod, the negative pressure passage has first position and second position, when the push rod slides to the first position, the plugging member blocks the liquid inlet, when the push rod slides to the second position, the plugging member exposes the liquid inlet.

[0008] As one of the embodiments, the push rod is provided with a limiting groove in communication with the liquid inlet, the sealing member is slidingly arranged in the limiting groove, the limiting groove has a groove top and a groove bottom along the length direction of the limiting groove, the sealing member abuts against the groove bottom when the push rod slides to the first position, and the sealing member abuts against the groove top when the push rod slides to the second position.

[0009] As one of the embodiments, the negative pressure channel has a negative pressure port, the negative pressure port is in communication with the liquid storage bottle through a conduit, and the valve body is movably arranged at the negative pressure port.

[0010] As one of the embodiments, the negative pressure port is provided with a limiting member, the limiting member is arranged in a spaced manner with the valve body, and the limiting member is used for limiting the movement range of the valve body.

[0011] As one of the embodiments, the negative pressure member includes an assembly part and a tapered part, the assembly part is provided with the negative pressure channel, one end of the assembly part close to the negative pressure port is connected with the tapered part, the tapered part is provided with the negative pressure port, and the negative pressure port and the tapered part are gradually converging in the direction away from the assembly part.

[0012] As one of the embodiments, the liquid outlet is arranged at the top and / or the periphery of the brush rod.

[0013] As one of the embodiments, the brush rod is detachably connected with the push rod, the cleaning brush includes a main machine assembly, the main machine assembly is connected with the liquid storage bottle, or the main machine assembly is connected with the brush rod.

[0014] As one of the embodiments, the sliding direction of the push rod is parallel to the length direction of the brush rod, or the sliding direction of the push rod is arranged at an angle with the length direction of the brush rod.

[0015] The utility model discloses a beneficial effect lies in: the application embodiment provides a kind of cleaning brush, including brush rod, negative pressure subassembly and liquid storage bottle, and brush rod is equipped with liquid outlet;Negative pressure subassembly includes push rod and negative pressure piece, and negative pressure piece is provided with negative pressure passage, and push rod is equipped with liquid inlet, and liquid inlet is communicated with liquid outlet, and push rod is slidably arranged in negative pressure passage, and push rod slides in the pressure change in negative pressure passage, and liquid inlet is selectively communicated with negative pressure passage;Liquid storage bottle, negative pressure subassembly is located in liquid storage bottle, and negative pressure passage is selectively communicated with liquid storage bottle by the valve body controlled by the pressure in negative pressure passage.Compared with prior art, the application realizes the ejection of cleaning fluid or water by the reciprocating motion of push rod in negative pressure passage, without using air pump and other equipment, saves production cost, simultaneously simplifies the design difficulty of structure, reduces overall weight;And liquid outlet is equipped on brush rod, with brush rod inserted into bottle, so that cleaning fluid or water can be accurately and quickly sprayed to any part in bottle, effectively avoid cleaning fluid or water spilling out of bottle, improve cleaning efficiency and cleaning effect. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The structure of the cleaning brush of the utility model embodiment is shown in the schematic view;

[0017] Figure 2 The cross-sectional view of the cleaning brush of the utility model embodiment is shown in the schematic view;

[0018] Figure 3 The cross-sectional view of the negative pressure subassembly of the utility model embodiment is shown in the schematic view;

[0019] Reference signs: 1, brush rod;11, liquid outlet;

[0020] 2, negative pressure subassembly;21, push rod;22, negative pressure piece;23, elastic piece;24, plugging piece;25, limiting piece;211, liquid inlet;212, limiting groove;221, negative pressure passage;222, negative pressure port;223, assembly part;224, tapered part;2121, groove top;2122, groove bottom;

[0021] 3, liquid storage bottle;

[0022] 4, valve body;

[0023] 5, main machine assembly;51, shell;52, driving piece;53, connecting piece;521, driving shaft. DETAILED DESCRIPTION

[0024] In the utility model, the terms "arrange", "have", "connect" should be understood in a broad sense. For example, it can be fixed connection, detachable connection, or integral structure, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through intermediate medium, or internal communication between two devices, elements or components. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0025] The orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "radial", "circumferential" is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0026] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0027] Also, in addition to being used to indicate the orientation or positional relationship, the above-mentioned part of the terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For ordinary skilled in the art, the specific meaning of these terms in the utility model can be understood according to the specific circumstances.

[0028] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0029] Referring to Figure 1 And Figure 2The embodiment of the present application provides a cleaning brush, which comprises a brush rod 1, a negative pressure assembly 2 and a liquid storage bottle 3, the brush rod 1 is provided with a liquid outlet 11; the negative pressure assembly 2 comprises a push rod 21 and a negative pressure piece 22, the negative pressure piece 22 is provided with a negative pressure channel 221, the push rod 21 is provided with a liquid inlet 211, the liquid inlet 211 is communicated with the liquid outlet 11, the push rod 21 is slidingly arranged in the negative pressure channel 221, the push rod 21 slides to change the pressure in the negative pressure channel 221, and the liquid inlet 211 is selectively communicated with the negative pressure channel 221; the liquid storage bottle 3, the negative pressure assembly 2 is arranged in the liquid storage bottle 3, and the negative pressure channel 221 is selectively communicated with the liquid storage bottle 3 through a valve body 4 controlled by the pressure in the negative pressure channel 221.

[0030] In actual application, the user slides the push rod 21 in the negative pressure channel 221 by pushing, changes the space size of the push rod 21 in the negative pressure channel 221, and thus causes the air pressure in the negative pressure channel 221 to be increased or decreased; specifically, when the push rod 21 slides to reduce the space connected with the negative pressure channel 221, the air pressure in the space is extruded, the pressure is increased, at this moment, the liquid inlet 211 on the push rod 21 is opened and connected with the negative pressure channel 221, and due to the high pressure in the negative pressure channel 221, the high air pressure can press the liquid in the negative pressure channel 221 (if the negative pressure channel 221 has the liquid) to the liquid inlet 211, the liquid inlet 211 is communicated with the liquid outlet 11 of the brush rod 1, so that the liquid can be sprayed out of the liquid outlet 11 of the brush rod 1 and enter various positions in the bottle along with the brush rod 1.

[0031] When the push rod 21 slides to expand the space connected with the negative pressure channel 221, the air pressure in the space is reduced, the external air pressure pushes away the valve body 4, so that the negative pressure channel 221 is communicated with the liquid storage bottle 3, and the liquid in the liquid storage bottle 3 is “adsorbed” into the negative pressure channel 221, so that the negative pressure channel 221 can press the liquid to the liquid inlet 211 in the next sliding process of the push rod 21, and then the liquid is sprayed out of the liquid outlet 11 of the brush rod 1. Such a cycle enables the liquid in the liquid storage bottle 3 to be continuously introduced into the negative pressure channel 221, then guided to the brush rod 1 from the negative pressure channel 221, and finally sprayed into the bottle from the liquid outlet 11. It should be noted that the liquid in the liquid storage bottle 3 can be cleaning liquid or water or other liquid.

[0032] Compared with the prior art, the present application realizes the spraying of cleaning liquid or water through the reciprocating movement of the push rod 21 in the negative pressure channel 221, without using a gas pump or other equipment, thereby saving production cost, simplifying the design difficulty of the structure and reducing the overall weight; and the liquid outlet 11 is arranged on the brush rod 1, so that the cleaning liquid or water can be accurately and quickly sprayed to any position in the bottle along with the brush rod 1 inserted into the bottle, thereby effectively avoiding the spraying of the cleaning liquid or water out of the bottle, improving the cleaning efficiency and cleaning effect.

[0033] In one embodiment, as shown in Figure 2 The sliding direction of the push rod 21 is parallel to the length direction of the brush rod 1.

[0034] The brush rod 1 can be connected with the push rod 21 together, and the user can push the brush rod 1 to move the push rod 21 in the negative pressure channel 221 to change the air pressure in the negative pressure channel 221.

[0035] Specifically, along the length direction of the brush rod 1, when the user pushes the brush rod 1 to move downward (towards the liquid storage bottle 3), the brush rod 1 pushes the push rod 21 to move downward, the air in the negative pressure channel 221 is squeezed, the pressure is increased, and after the push rod 21 moves a distance downward, the liquid inlet 211 of the push rod 21 is exposed, the liquid in the negative pressure channel 221 is pressed to the liquid outlet 11 of the brush rod 1, and is sprayed into the bottle from the liquid outlet 11; along the length direction of the brush rod 1, when the user pushes the brush rod 1 to move upward (away from the liquid storage bottle 3), the brush rod 1 pushes the push rod 21 to move upward, the air pressure in the negative pressure channel 221 is reduced, the valve body 4 is opened, and the negative pressure channel 221 is communicated with the liquid storage bottle 3, so that the liquid in the liquid storage bottle 3 is pressed into the negative pressure channel 221 to store part of the liquid in the negative pressure channel 221 for next time. In this way, the user only needs to press the brush rod 1 to realize the reciprocating movement of the push rod 21, without designing other structures to push the push rod 21 to move, and the structure is more simple.

[0036] It should be noted that the up and down movement of the push rod 21 does not refer to a specific direction of movement; here the downward movement of the push rod 21 refers to the direction of squeezing the air in the negative pressure channel 221 to increase the air pressure in the negative pressure channel 221; the upward movement of the push rod 21 refers to the direction of expanding the space connected with the push rod 21 and the negative pressure channel 221 to reduce the air pressure in the negative pressure channel 221. When the direction of the push rod 21 is not parallel to the length direction of the brush rod 1, the sliding direction of the push rod 21 is not up and down movement.

[0037] Referring to Figure 2 , the liquid outlet 11 can be provided on the top or the periphery of the brush rod 1, or the liquid outlet 11 can be provided on the top and the periphery of the brush rod 1. With the liquid outlet 11 provided at different positions of the brush rod 1, the brush rod 1 sprays the cleaning liquid from different liquid outlets 11 to different parts of the bottle, improving the cleaning effect. For example, the liquid outlet 11 on the top can conveniently spray the cleaning liquid to the bottom of the bottle, and the liquid outlet 11 on the periphery can conveniently spray the cleaning liquid to the body of the bottle.

[0038] Referring to Figure 2 and Figure 3 , the negative pressure assembly 2 further comprises an elastic member 23, which is arranged in the negative pressure member 22 and elastically abuts between the push rod 21 and the negative pressure member 22.

[0039] In practical application, the elastic member 23 is mainly used to assist the push rod 21 to reset. When the user pushes the push rod 21 to move in a certain direction, the push rod 21 causes the elastic member 23 to elastically deform. When the user stops pushing or unloads the force, the elastic member 23 pushes the push rod 21 back to the initial position through the accumulated elastic potential energy, realizes the automatic reset function of the push rod 21, and makes the push rod 21 reciprocate in the negative pressure channel 221 more quickly, thereby saving the user's physical strength. The elastic member 23 can be a spring or the like.

[0040] Referring again to Figure 3 , the negative pressure assembly 2 comprises a blocking member 24 connected to the inner wall of the negative pressure channel 221, the liquid inlet 211 is arranged on the side surface of the push rod 21, and the negative pressure channel 221 has a first position and a second position. When the push rod 21 slides to the first position, the blocking member 24 blocks the liquid inlet 211. When the push rod 21 slides to the second position, the blocking member 24 exposes the liquid inlet 211.

[0041] In practical application, the blocking member 24 is used to block the liquid inlet 211, so that the negative pressure channel 221 forms a relatively sealed environment. Specifically, any position between the initial position of the push rod 21 and the position where the push rod 21 moves to the liquid inlet 211 and is about to be opened can be set as the first position. When the push rod 21 moves in this distance, the blocking member 24 always blocks the liquid inlet 211. At this time, the negative pressure channel 221 is a sealed space, so that the push rod 21 slides and extrudes the negative pressure channel 221, so that the air pressure in the negative pressure channel 221 rises, until the push rod 21 slides to the second position, the blocking member 24 no longer blocks the liquid inlet 211, and the liquid inlet 211 is communicated with the negative pressure channel 221. The liquid in the negative pressure channel 221 enters the liquid inlet 211 and is sprayed out of the liquid outlet 11 of the brush rod 1. The setting of the blocking member 24 can make the negative pressure channel 221 form a sealed space, so that when the push rod 21 extrudes the air in the negative pressure channel 221, it is convenient to form a high-pressure environment in the negative pressure channel 221 to press the liquid into the liquid inlet 211.

[0042] Referring again to Figure 3 , the push rod 21 further comprises a limiting groove 212 communicated with the liquid inlet 211, and the blocking member 24 is slidingly arranged in the limiting groove 212. The limiting groove 212 has a groove top 2121 and a groove bottom 2122 along the length direction thereof. When the push rod 21 slides to the first position, the blocking member 24 abuts against the groove bottom 2122. When the push rod 21 slides to the second position, the blocking member 24 abuts against the groove top 2121.

[0043] In practical application, the blocking member 24 can be movably connected to the inner wall of the negative pressure channel 221, for example, the blocking member 24 abuts between the push rod 21 and the negative pressure channel 221. When the push rod 21 slides in the first position, the blocking member 24 and the negative pressure channel 221 have a large friction force due to the abutment of the blocking member 24 and the side wall of the negative pressure channel 221. Therefore, when the push rod 21 moves in the first position, the blocking member 24 does not move, and the push rod 21 and the blocking member 24 have relative movement, so that the blocking member 24 is no longer blocked in the liquid inlet 211, and the liquid inlet 211 is exposed. When the push rod 21 moves to the second position, that is, the top 2121 of the limiting groove 212 abuts against the sealing member, the push rod 21 continues to move downward (toward the liquid storage bottle 3), driving the blocking member 24 to move. Thus, when the user releases his hand or unloads the force, the push rod 21 moves upward (away from the liquid storage bottle 3) under the action of the elastic member 23. At this time, due to the friction force between the blocking member 24 and the negative pressure channel 221, the push rod 21 and the blocking member 24 have relative movement again, so that the blocking member 24 is blocked in the liquid inlet 211 again until the bottom 2122 of the limiting groove 212 abuts against the blocking member 24, driving the blocking member 24 to move upward until the push rod 21 and the blocking member 24 return to the original position.

[0044] In this way, when the cleaning liquid enters the liquid inlet 211, the user releases his hand or unloads the force, and the blocking member 24 can quickly block the liquid inlet 211 without waiting for the push rod 21 to return to the original position before blocking the liquid inlet 211. It can ensure that the amount of liquid entering the liquid inlet 211 at a time is not too much, and realize the effect of squeezing out cleaning liquid in small amounts and multiple times, effectively saving the amount of cleaning liquid.

[0045] It can be understood that the blocking member 24 can be made of soft rubber material.

[0046] Referring again to Figure 3 , the negative pressure channel 221 has a negative pressure port 222, the negative pressure port 222 is communicated with the liquid storage bottle 3 through a conduit, and the valve body 4 is movably arranged at the negative pressure port 222. In practical application, the valve body 4 can be a valve bead, and the valve bead is arranged at the negative pressure port 222. When the push rod 21 moves upward and the air pressure in the negative pressure channel 221 decreases, the air pressure inside the negative pressure channel 221 is small and the air pressure outside is large. The air in the conduit is squeezed into the negative pressure channel 221, so that the valve bead is opened to expose the negative pressure port 222, the negative pressure channel 221 is communicated with the liquid storage bottle 3, and the liquid in the liquid storage bottle 3 is also squeezed into the negative pressure channel 221. When the air pressure inside and outside the negative pressure channel 221 is equal, the valve bead is blocked again under the action of gravity to seal the negative pressure port 222 and the negative pressure channel 221.

[0047] Referring again to Figure 3 , a limiting member 25 is arranged at the negative pressure port 222, and the limiting member 25 is spaced apart from the valve body 4. The limiting member 25 is used to limit the movement range of the valve body 4.

[0048] In practical application, in order to avoid the valve ball being separated from the negative pressure port 222 under the action of air pressure, the application sets a limiting piece 25, which provides a space for the valve ball to move and limits the movement range of the valve ball, so that the valve ball can only move near the negative pressure port 222. In this way, the valve ball can not only expose the negative pressure port 222 to communicate the negative pressure channel 221 and the liquid storage bottle 3, but also can hinder the flow of cleaning liquid entering the negative pressure port 222, so as to avoid too much liquid in the negative pressure channel 221, which affects the sliding of the push rod 21 next time, and also facilitates the valve ball to accurately return to the initial position under the action of gravity, avoiding affecting the sealing of the negative pressure channel 221.

[0049] Referring again to Figure 3 , the negative pressure piece 22 includes an assembly part 223 and a tapered part 224, the assembly part 223 is provided with a negative pressure channel 221, and the end of the assembly part 223 close to the negative pressure port 222 is connected with the tapered part 224, the tapered part 224 is provided with the negative pressure port 222, and the negative pressure port 222 and the tapered part 224 are gradually converging in the direction away from the assembly part 223.

[0050] In practical application, the tapered part 224 in the gradually converging state is conducive to connecting with the catheter and plays a guiding role, and the negative pressure port 222 in the gradually converging state can make the cross-sectional area of the negative pressure port 222 gradually change, and when the fluid passes through the area with gradually decreasing cross-sectional area, the flow rate will increase. This helps to improve the efficiency of negative pressure suction and can quickly suck liquid into the negative pressure channel 221.

[0051] Referring again to Figure 2 , the cleaning brush further includes a host assembly 5, which can be directly connected with the liquid storage bottle 3 and is used to drive the liquid storage bottle 3 to rotate, thereby driving the brush rod 1 to rotate.

[0052] Specifically, the host assembly 5 includes a housing 51, a driving piece 52 and a connecting piece 53, the driving piece 52 is installed in the housing 51, the driving shaft 521 of the driving piece 52 extends out of the housing 51 and is connected with the connecting piece 53, the connecting piece 53 is used for detachable connection with the liquid storage bottle 3, such as buckling, plug-in or threaded connection, etc. When it is needed to spray cleaning liquid, the liquid storage bottle 3 is installed on the driving shaft 521, and then the brush rod 1 is connected with the push rod 21, when the driving piece 52 drives the liquid storage bottle 3 to rotate, the liquid storage bottle 3 drives the brush rod 1 to rotate, realizing the function of electric cleaning and improving the cleaning efficiency and saving the user's physical strength.

[0053] Meanwhile, the host component 5 can also be directly connected with the brush rod 1, and the brush rod 1 is detachably connected with the push rod 21. When the spraying of the cleaning liquid is not needed, the brush rod 1 can be separated from the push rod 21, and the liquid storage bottle 3 can be removed, and the brush rod 1 can be directly connected with the connecting piece 53, and the driving piece 52 can directly drive the brush rod 1 to rotate, so that the function of the electric brush bottle is realized. In this way, the driving force of the driving piece 52 for driving the brush rod 1 to rotate is larger, the cleaning of the brush rod 1 is more thorough, and it is beneficial to clean the stains closely attached in the bottle, and the cleaning effect is provided.

[0054] It can be understood that the brush rod 1 and the push rod 21 can be detachably connected in a plug-in or buckling manner.

[0055] It should be noted that in another embodiment, the sliding direction of the push rod 21 can also be arranged at an angle with the length direction of the brush rod 1, for example, the sliding direction of the push rod 21 is perpendicular to the length direction of the brush rod 1, and a press switch is arranged on the bottle body of the liquid storage bottle 3, the press switch is connected with the push rod 21, and when the user holds the cleaning brush, the press switch is pressed or released by the fingers, the press switch drives the push rod 21 to move, so as to realize the reciprocating motion of the push rod 21 in the negative pressure channel 221, cause the pressure change in the negative pressure channel 221, and then realize the effect of spraying the cleaning liquid from the brush rod 1. In this way, the press switch is arranged at the hand of the user, and the operation is more convenient. The brush rod 1 can be rotated to wash the bottle, and the press switch can be pressed to spray the liquid at the same time, so that the convenience of the cleaning brush is improved. The sliding direction and the sliding structure of the push rod 21 are not limited in the present application.

[0056] Different from the prior art, the embodiment of the present application provides a cleaning brush, which comprises a brush rod 1, a negative pressure component 2 and a liquid storage bottle 3, the brush rod 1 is provided with a liquid outlet 11; the negative pressure component 2 comprises a push rod 21 and a negative pressure piece 22, the negative pressure piece 22 is provided with a negative pressure channel 221, the push rod 21 is provided with a liquid inlet 211, the liquid inlet 211 is communicated with the liquid outlet 11, the push rod 21 is slidably arranged in the negative pressure channel 221, and the sliding of the push rod 21 causes the pressure change in the negative pressure channel 221, and the liquid inlet 211 is selectively communicated with the negative pressure channel 221; the liquid storage bottle 3, the negative pressure component 2 is arranged in the liquid storage bottle 3, and the negative pressure channel 221 is selectively communicated with the liquid storage bottle 3 through the valve body 4 controlled by the pressure in the negative pressure channel 221. Compared with the prior art, the present application realizes the spraying of the cleaning liquid or water through the reciprocating motion of the push rod 21 in the negative pressure channel 221, without using a gas pump or other equipment, saving the production cost, simplifying the design difficulty of the structure, and reducing the overall weight; and the liquid outlet 11 is arranged on the brush rod 1, and when the brush rod 1 is inserted into the bottle, the cleaning liquid or water can be accurately and quickly sprayed to any part in the bottle, effectively avoiding the spraying of the cleaning liquid or water out of the bottle, improving the cleaning efficiency and the cleaning effect.

[0057] The above description is only a specific implementation of the present application. It should be pointed out that, for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which should also be considered as the protection scope of the present application.

Claims

1. A cleaning brush characterized by, The utility model relates to a negative pressure liquid feeding device, comprising: a brush rod (1) with a liquid outlet (11); a negative pressure assembly (2) comprising a push rod (21) and a negative pressure piece (22), the negative pressure piece (22) is provided with a negative pressure channel (221), the push rod (21) is provided with a liquid inlet (211), the liquid inlet (211) is communicated with the liquid outlet (11), the push rod (21) is slidably arranged in the negative pressure channel (221), the push rod (21) is slid to change the pressure in the negative pressure channel (221), and the liquid inlet (211) is selectively communicated with the negative pressure channel (221); a liquid storage bottle (3), the negative pressure assembly (2) is arranged in the liquid storage bottle (3), and the negative pressure channel (221) is selectively communicated with the liquid storage bottle (3) through a valve body (4) controlled by the pressure in the negative pressure channel (211).

2. The cleaning brush of claim 1, wherein, The negative pressure assembly (2) comprises an elastic member (23), the elastic member (23) is arranged in the negative pressure piece (22) and elastically abuts between the push rod (21) and the negative pressure piece (22) respectively.

3. The cleaning brush of claim 1, wherein, The negative pressure assembly (2) comprises a blocking member (24), the blocking member (24) is connected to the inner wall of the negative pressure channel (221), the liquid inlet (211) is arranged on the side surface of the push rod (21), the negative pressure channel (221) has a first position and a second position, when the push rod (21) is slid to the first position, the blocking member (24) blocks the liquid inlet (211), when the push rod (21) is slid to the second position, the blocking member (24) exposes the liquid inlet (211).

4. The cleaning brush of claim 3, wherein, The push rod (21) is provided with a limiting groove (212) communicated with the liquid inlet (211), the blocking member (24) is slidably arranged in the limiting groove (212), the limiting groove (212) has a groove top (2121) and a groove bottom (2122) along the length direction, when the push rod (21) is slid to the first position, the blocking member (24) abuts against the groove bottom (2122); when the push rod (21) is slid to the second position, the blocking member (24) abuts against the groove top (2121).

5. The cleaning brush of claim 1, wherein, The negative pressure channel (221) has a negative pressure port (222), the negative pressure port (222) is communicated with the liquid storage bottle (3) through a conduit, and the valve body (4) is movably arranged at the negative pressure port (222).

6. The cleaning brush of claim 5, wherein, The negative pressure port (222) is provided with a limiting member (25), the limiting member (25) is spaced apart from the valve body (4), and the limiting member (25) is used for limiting the activity range of the valve body (4).

7. The cleaning brush of claim 5, wherein, The negative pressure piece (22) comprises a fitting part (223) and a tapered part (224), the fitting part (223) is provided with the negative pressure channel (221), one end of the fitting part (223) near the negative pressure port (222) is connected with the tapered part (224), the tapered part (224) is provided with the negative pressure port (222), and the negative pressure port (222) and the tapered part (224) are gradually convergent in the direction away from the fitting part (223).

8. The cleaning brush according to any one of claims 1-6, wherein, The liquid outlet (11) is arranged on the top and / or the periphery of the brush rod (1).

9. The cleaning brush according to any one of claims 1-6, wherein, The brush rod (1) is detachably connected with the push rod (21), and the cleaning brush comprises a main machine assembly (5); the main machine assembly (5) is connected with the liquid storage bottle (3), or the main machine assembly (5) is connected with the brush rod (1).

10. The cleaning brush of claim 1, wherein, The sliding direction of the push rod (21) is parallel to the length direction of the brush rod (1); or the sliding direction of the push rod (21) is arranged at an angle with the length direction of the brush rod (1).

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