A toilet brush with a brush head preventing falling off

Abstract

The utility model provides a brush head anti -drop's closestool brush, including brush handle and brush head, the brush handle with detachable connection of brush head, the brush handle is equipped with the clamping mouth for installing brush head, the brush head is equipped with boss and first hook part, the both sides of clamping mouth are equipped with first chuck and second chuck, the boss enters the clamping mouth, when the first chuck and second chuck opposite activity approach the boss is fixed by the clamping mouth limit, the brush handle is equipped with the positioning part, when the boss opposite the brush handle moves back and forth the positioning part prevents the boss drives first chuck or second chuck rotates and opens, when the boss opposite the brush handle rotates back and forth, first hook part prevents the boss drives first chuck or second chuck rotates and opens. The utility model discloses through setting up positioning part and first hook part, thereby realizes the advantage that the brush head is prevented from falling off in the moving or rotating process in daily use.

Description

Technical Field

[0001] This utility model relates to the field of toilet brushes, specifically to a toilet brush with an anti-detachment brush head. Background Technology

[0002] In existing technology, toilets and latrines are generally cleaned using toilet brushes. Typical toilet brushes have bristles fixed to the brush head at the bottom of the handle, using the bristles for cleaning. However, the bristles and brush head, as well as the brush head and handle, cannot be detached. After use, when the toilet brush is placed against a wall or stored on its base, dirt and water residue on the brush head and bristles cannot be thoroughly cleaned, easily leading to bacterial growth and unpleasant odors. Therefore, there is a need for a toilet brush with an easily detachable brush head that can be replaced as needed. Utility Model Content

[0003] One objective of this invention is to provide a toilet brush with an anti-detachment brush head that solves the above-mentioned problems.

[0004] To achieve the above-mentioned objectives, this utility model is implemented through the following technical solutions: A toilet brush with an anti-detachment brush head includes a handle and a brush head. The handle and brush head are detachably connected. The handle has a clamping opening for mounting the brush head. The brush head has a protrusion, the size of which is larger than the size of the clamping opening. A neck is provided between the protrusion and the brush head. A first hook is provided between the protrusion and the neck. A first clamp and a second clamp are provided on both sides of the clamping opening. When the first clamp and the second clamp rotate relative to each other and open, the clamping opening widens, and the protrusion passes through the clamping opening. The first clamp and the second clamp... When the brush moves close to the neck and clamps it in the clamping opening, the protrusion is limited and fixed by the edge of the clamping opening. The brush handle is provided with a positioning part for limiting the installation position of the protrusion. When the protrusion moves back and forth relative to the first clamp or the second clamp, the positioning part prevents the protrusion from driving the first clamp or the second clamp to rotate and open, thereby enlarging the clamping opening. When the protrusion rotates back and forth relative to the first clamp or the second clamp, the first hook part prevents the protrusion from driving the first clamp or the second clamp to rotate and open, thereby enlarging the clamping opening. The detachable connection between the brush handle and the brush head allows for immediate installation and removal of the brush head before and after use, preventing the toilet brush from emitting odors when idle. During installation, the second clamp has a gap between itself and the brush handle. When the brush head moves along the direction of the first clamp, the second clamp is located behind it. The second clamp pushes the brush head forward, which can cause it to slightly open due to the installation gap. The friction between the brush head and the toilet increases the pushing force between the second clamp and the brush head, potentially causing the brush head to fall due to the second clamp opening. The positioning part prevents the brush head from pushing the second clamp open during use. Since toilets and other sanitary fixtures often have curved surfaces, the brush head rotates relative to the first or second clamp during brushing. The first hook prevents the brush head from opening the first or second hook when rotating relative to the first or second clamp, thus preventing the brush head from falling off during daily use.

[0005] Preferably, the positioning part is fixedly disposed on the first clamp, and the second clamp is provided with a first clamping cavity, the first clamping cavity communicating with the clamping opening, and the width of the first clamping cavity being greater than the width of the clamping opening to accommodate the protrusion, the positioning part extending into the first clamping cavity, the positioning part preventing the protrusion from moving towards the second clamp, the second clamp being provided with a support surface or a second hook at the position corresponding to the clamping opening, the protrusion rotating back and forth relative to the second clamp, the first hook cooperating with the support surface or the second hook to support and prevent the protrusion from driving the second clamp to rotate and open. The first clamp portion and the second clamp portion together form the clamping opening. The protrusion is clamped between the first clamp and the second clamp. The rear side of the protrusion extends into the first clamping cavity and is blocked by the positioning part located in the first clamping cavity. When the brush head moves forward to perform cleaning work, the thrust between the protrusion and the second clamp in the clamping installation state decreases or is blocked by the positioning part, so that the protrusion and the second clamp no longer push against each other, thereby preventing the brush head from falling off. When the brush head rotates to clean the arc surface, the cooperation between the first hook and the support surface or the second hook prevents the second clamp from rotating and opening, further preventing the brush head from falling off.

[0006] Preferably, the positioning part includes a first positioning surface and a second positioning surface. The first positioning surface and the second positioning surface limit the protrusion in different directions. The first positioning surface prevents the protrusion from moving towards the second clamp, and the second positioning surface prevents the protrusion from moving into the inner cavity of the brush handle. The arrangement of the first positioning surface and the second positioning surface prevents the second clamp from opening during brush head cleaning and also prevents the brush head from wobbling relative to the inside and outside of the brush handle.

[0007] Preferably, the positioning part has an arc surface with a hook-shaped cross-section. The first positioning surface and the second positioning surface are formed at two different positions on the upper and lower parts of the arc surface, respectively. The arc surface of the positioning part can guide the entry of the protrusion when clamping the brush head, so that the protrusion automatically abuts and limits itself against the positioning part along the arc surface after passing through the clamping opening.

[0008] Preferably, the middle portion of the second clamp is rotatably connected to the brush handle or the first clamp along the first pivot axis. The positioning portion also has an anti-rotation part, and the second clamp abuts against the anti-rotation part to limit the maximum angle of rotation of the second clamp away from the first clamp. This allows the positioning portion to simultaneously serve as a brush head anti-dislodgement positioning element and a second clamp rotation limiter, simplifying the internal structure of the brush handle.

[0009] Preferably, the first clamp is integrally formed or fixedly connected to the positioning part. The first clamp has a second clamping cavity, which communicates with the clamping opening and the first clamping cavity. The end of the positioning part extends into the second clamping cavity. When the brush head is installed on the brush handle, the positioning part guides the front end of the protrusion into the second clamping cavity. The positioning part supports the rear end of the protrusion, preventing the protrusion from moving back and forth. A portion of the first clamp and a portion of the second clamp together form the clamping opening. The protrusion is clamped between the first clamp and the second clamp. The curvature or slope of the positioning part guides the protrusion passing through the clamping opening to automatically move to a position where it partially extends into the second clamping cavity. After the second clamp rotates and closes, it covers the other part of the protrusion.

[0010] Preferably, the brush handle further includes a handle section, which is a one-piece hollow tube. The front end of the handle section is integrally formed with the first clamp. An inclined angle is provided between the handle section and the first clamp. The first clamp has a first opening in the extending direction of the handle section. The rear end of the handle section has a second opening communicating with the first opening. A control component is provided between the handle section and the first clamp. The control component includes a switch, a push rod, and a spring. The push rod enters the handle section through one of the first opening and the second opening. The switch drives the push rod to move back and forth, thereby moving the second clamp and installing and removing the brush head. Conventional toilet brushes use an upper and lower cover connection, making it easy for sewage and waste to enter the toilet brush cavity through the installation gap between the upper and lower covers and difficult to drain. The handle section is made of one-piece injection molding or a metal tube, preventing sewage and waste from entering the toilet brush and making it more hygienic.

[0011] Preferably, the rear end of the second clamp is provided with an elongated groove, and the front end of the push rod is rotatably mounted in the elongated groove. The push rod moves back and forth, causing the second clamp to rotate around the first pivot. During use, the clamping section will come into contact with sewage and dirt. By using the back and forth movement of the push rod to change the position of the second clamp, the hand can be prevented from coming into contact with sewage and dirt on the surfaces of the first and second clamps.

[0012] Preferably, the handle section has a through guide sleeve, and the guide sleeve and the handle section are on the same straight line to allow the push rod to pass through and restrict the forward and backward movement of the push rod. The push rod has a stop block, and the spring is installed between the guide sleeve and the stop block. The guide sleeve and the stop block support the front and rear sides of the spring respectively, so that the spring deforms when the push rod moves forward and backward. The guide sleeve supports the front end of the push rod, reducing the push rod's wobbling.

[0013] Preferably, the second clamp or the first clamping cavity is provided with a drain hole, through which water in the first clamping cavity can flow out. This facilitates the discharge of wastewater entering the first clamping cavity, thereby reducing odor and bacterial growth.

[0014] The advantages of this invention are as follows: the detachable connection between the brush handle and the brush head allows for immediate installation and removal of the brush head before and after use, preventing the toilet brush from emitting odors when idle; the positioning part prevents the brush head from moving back and forth and pushing the second clamp to open during use. Since toilets and other sanitary fixtures typically have curved surfaces, the brush head rotates relative to the first or second clamp during brushing. The first hook prevents the brush head from opening the first or second hook when rotating relative to the first or second clamp, thus preventing the brush head from falling off during daily use; the detachable connection between the brush handle and the brush head is achieved through a control component, allowing for immediate installation and removal of the brush head before and after use, preventing the toilet brush from emitting odors when idle; unlike conventional toilet brushes that use a top and bottom cover connection, which allows sewage and waste to easily enter the toilet brush cavity through the gap between the top and bottom covers and be difficult to drain, the handle section is made of one-piece injection molding or a metal tube, preventing sewage and waste from entering the toilet brush and making it more hygienic. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall design of the toilet brush of this utility model.

[0016] Figure 2 This is an exploded schematic diagram of the toilet brush of this utility model.

[0017] Figure 3 This is a cross-sectional schematic diagram of the entire brush handle of this utility model.

[0018] Figure 4 This is an overall schematic diagram of the second clamp of this utility model in its open state.

[0019] Figure 5 This is a cross-sectional schematic diagram of the initial state of the second chuck of this utility model.

[0020] Figure 6 This is a cross-sectional schematic diagram of the second clamp of this utility model in its open state.

[0021] Figure 7 This is a cross-sectional schematic diagram of the brush head of this utility model in its installed state.

[0022] Figure 8 This is a cross-sectional schematic diagram of the first hook part of this utility model.

[0023] Figure 9 This is a cross-sectional schematic diagram of the first hook part of this utility model in a limited position when it is engaged with the support surface.

[0024] Figure 10 This is a cross-sectional schematic diagram of the first hook and the second hook in the limiting state of this utility model. Detailed Implementation

[0025] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so that the implementation of this utility model can be fully understood and carried out based on how technical means are used to solve technical problems and achieve technical effects.

[0026] This utility model uses certain terms to refer to specific components. Those skilled in the art will understand that this specification and claims do not distinguish components by differences in name, but rather by differences in function. It should be noted that, unless otherwise specified, when a component is described as "provided with," "located on," or "located on" another component, it can mean directly provided with or located on another component, or it may also mean there is a component in between; it can be an integral structure or a separate structure. When a component is described as "connected" to another component, it can mean a direct connection or a connection through a component in between; it can be an integral connection, a separate connection, or a contact fit. When a component is described as "located on another component," it does not necessarily mean that the component is located above or on top of the other component; it can be in other positions. The terms "upper," "lower," "left," "right," "high," "lower," and similar expressions used herein are based on the normal placement state of the product and are merely for illustrative purposes. The term "multiple" used herein refers to two or more items. The terms "vertical" and "horizontal" used in this article refer to a state that is roughly vertical or roughly horizontal within a reasonable margin of error, and do not necessarily have to be extremely precise.

[0027] like Figure 1-10 A toilet brush with an anti-detachment brush head includes a handle 1 and a brush head 2. The handle 1 and the brush head 2 are detachably connected. The handle 1 is provided with a clamping opening 3 for installing the brush head 2. The brush head 2 is provided with a protrusion 4. The size of the protrusion 4 is larger than the size of the clamping opening 3. A first clamp 5 and a second clamp 6 are provided on both sides of the clamping opening 3. When the first clamp 5 and the second clamp 6 rotate relative to each other and open, the clamping opening 3 becomes larger and the protrusion 4 enters the clamping opening 3. When the first clamp 5 and the second clamp 6 move closer to each other, the protrusion 4 is limited and fixed by the clamping opening 3. The handle 1 is provided with a positioning part 7 for limiting the installation position of the protrusion 4. The positioning part 7 prevents the protrusion 4 from moving and causing the first clamp 5 or the second clamp 6 to rotate and open, thus making the clamping opening 3 larger.

[0028] In this embodiment, the first clamp 5 and the second clamp 6 are distributed front to back, with the first clamp 5 located in front of the second clamp 6. The front-back direction is the extension direction of the brush handle 1. Grooves are provided at positions close to each other on the first clamp 5 and the second clamp 6, forming a clamping opening 3. The first clamp 5 is integrally formed or fixedly connected to the brush handle 1. The second clamp 6 is rotatably connected to the brush handle 1 or the first clamp 5. The first clamp 5 can rotate towards and away from the brush head 2 to release and clamp the brush head 2. In other embodiments, the positions of the first clamp 5 and the second clamp 6 can be interchanged, such as the second clamp 6 being located in front of the first clamp 5, while the remaining structure of the first clamp 5 and the second clamp 6 remains unchanged; alternatively, both the first clamp 5 and the second clamp 6 can be rotatably connected to the brush handle 1, allowing both the first and second brush heads 2 to rotate open and close during installation and removal.

[0029] Preferably, the positioning part 7 can be a part of the brush handle 1 or the first clamp 5. The positioning part 7 can also be a separate component fixedly installed on the brush handle 1 or the first clamp 5. When the second clamp 6 is installed, there is a gap between it and the brush handle 1 for installation and movement. When the brush head 2 moves along the direction of the first clamp 5 to brush, the second clamp 6 is located behind the brush head 2 in the direction of movement. The second clamp 6 pushes the brush head 2 forward to brush, which can easily cause the second clamp 6 to open slightly due to the installation gap. The friction between the brush head 2 and the toilet makes the pushing force between the second clamp 6 and the brush head 2 greater, causing the brush head 2 to fall off due to the opening of the second clamp 6. The positioning part 7 prevents the brush head 2 from pushing the second clamp 6 to open during use, thereby preventing the brush head 2 from falling off during daily use.

[0030] In this embodiment, the positioning part 7 is fixedly disposed on the first clamp 5, and the second clamp 6 is provided with a first clamping cavity 8. The first clamping cavity 8 is connected to the clamping opening 3, and the width of the first clamping cavity 8 is greater than the width of the clamping opening 3 to accommodate the protrusion 4. The positioning part 7 extends into the first clamping cavity 8, and the positioning part 7 prevents the protrusion 4 from moving towards the second clamp 6.

[0031] Preferably, the brush head 2 includes a fixed end 9 and a wiping section 10 that are fixedly connected. The fixed end 9 is provided with an outwardly extending protrusion 4. A neck 11 with a reduced size is provided between the protrusion 4 and the fixed end 9. The size of the protrusion 4 is larger than the size of the clamping opening 3. The size of the neck 11 is adapted to the size of the clamping opening 3. The second clamp 6 and the first clamp 5 open relative to each other. The protrusion 4 can pass through the clamping opening 3. The neck 11 is located at the position of the clamping opening 3. When the first clamp 5 and the second clamp 6 are rotated to close, the neck 11 is clamped by the clamping opening 3. The protrusion 4 is located inside the clamping opening 3. Due to the size difference between the protrusion 4 and the clamping opening 3, the protrusion 4 cannot leave the clamping opening 3.

[0032] In this embodiment, the positioning part 7 includes a first positioning surface 12 and a second positioning surface 13. The first positioning surface 12 and the second positioning surface 13 limit the protrusion 4 in different directions. The first positioning surface 12 prevents the protrusion 4 from moving towards the second clamp 6, and the second positioning surface 13 prevents the protrusion 4 from moving into the inner cavity of the brush handle 1. The first positioning surface 12 is approximately parallel to the clamping opening 3, and the second positioning surface 13 is located below the first positioning surface 12. The lower end of the second positioning surface 13 extends towards the clamping opening 3 so that the first positioning surface 12 and the second positioning surface 13 together form a hook. The hook shape of the first positioning surface 12 prevents the protrusion 4 from approaching or abutting the second clamp 6.

[0033] In other embodiments, the positioning part 7 may also be configured as a positioning groove or positioning hole, with the protrusion 4 entering the positioning groove or positioning hole, and the sidewall of the positioning groove or positioning hole preventing the protrusion 4 from approaching or abutting the second chuck 6.

[0034] Preferably, the positioning part 7 has an arc surface with a hook-shaped cross-section. The upper and lower positions of the arc surface respectively form a first positioning surface 12 and a second positioning surface 13. The arc surface of the positioning part 7 guides the entry of the protrusion 4 when clamping the brush head 2, allowing the protrusion 4 to automatically abut and be positioned against the positioning part 7 after passing through the clamping opening 3. Alternatively, the positioning part 7 can be configured as an angled surface, with the two surfaces extending in different directions forming the first positioning surface 12 and the second positioning surface 13.

[0035] Since toilets and other sanitary appliances usually have curved surfaces, in addition to the back-and-forth brushing method, the brush head 2 also rotates relative to the brush handle 1 or the clamp along the curved surface when brushing and cleaning. In order to prevent the brush head 2 from causing the first clamp 5 or the second clamp 6 to rotate and open during the back-and-forth rotation of the brush head 2 relative to the first clamp 5 or the second clamp 6, this embodiment also provides another anti-detachment mechanism.

[0036] Specifically, the anti-detachment mechanism is configured with a first hook 31, located at the connection between the protrusion 4 and the neck 11. When the protrusion 4 rotates back and forth relative to the first clamp 5 or the second clamp 6, the first hook 31 prevents the protrusion 4 from driving the first clamp 5 or the second clamp 6 to rotate and open, thus enlarging the clamping opening 3. In this embodiment, the first hook 31 can be configured as a straight surface with a preset length, approximately perpendicular to the bottom of the protrusion 4 and the neck 11. A hook shape is formed by the recess between the straight surface and the neck 11. The first clamp 5 or the second clamp 6 has a support surface 32 parallel to the straight surface of the first hook 31 at the edge of the clamping opening 3. When the brush head 2 rotates back and forth, the straight surface of the first hook 31 moves to a position where it fits against the support surface 32. With the support of the straight surface of the first hook 31, the second clamp 6 cannot rotate and open, thereby preventing the brush head 2 from detaching. Figure 10The bottom of the protrusion 4 can also be set as a slope with a high center and a low periphery, so that the first hook 31 forms a barb and the barb position forms a cavity. In order to cooperate with the first hook 31, the first clamp 5 or the second clamp 6 is provided with a second hook 33 at the edge of the clamping opening 3. The shape of the second hook 33 is adapted to the first hook 31, so that the second hook 33 can be inserted into the cavity formed by the first hook 31, so that there is a mutually fitting and abutting surface between the first hook 31 and the second hook 33. When the brush head 2 rotates back and forth, the first hook 31 and the second hook 33 are inserted and supported, and the second clamp 6 cannot rotate and open, thereby realizing the prevention of brush head 2 from falling off.

[0037] The positioning part 7 and the first hook part 31 can prevent the protrusion 4 from moving or rotating relative to the first clamp 5 or the second clamp 6, or prevent the protrusion 4 from driving the second clamp 6 to rotate and open during the process of the protrusion 4 moving or rotating relative to the first clamp 5 or the second clamp 6. When the brush head 2 is cleaning a flat or curved surface, the positioning part 7 and the first hook part 31 can be individually or simultaneously limited to prevent the second clamp 6 from opening, so that the brush head 2 can always be prevented from falling off when brushing toilets of different shapes, thereby improving the installation and use stability of the brush head 2.

[0038] In this embodiment, the forward and backward movement and rotation directions of the brush head 2 and the protrusion 4 can be referred to Figure 8-10 This refers to the state where the bottom surface of brush head 2 is placed on a horizontal surface and the brush is moved back and forth. The back and forth direction is... Figure 8-10 The left and right directions are referenced to the front and back directions. The front and back directions are based on the brushing surface of the brush head 2. The front and back directions can also be used when the brush head 2 brushes the toilet in different directions and angles. The rotation in the front and back directions can also be understood as the swinging of the brush head 2 relative to the brush handle 1 in the forward or backward direction without a specific point of rotation.

[0039] In existing technologies, such as Figure 5-6 There is also a dimensional difference between the protrusion 4 and the neck 11, but the bottom edge of the protrusion 4 is provided with an arc surface, which shortens the bottom length of the protrusion 4. When the protrusion 4 disengages from the clamping opening 3 or rotates relative to the first clamp 5 or the second clamp 6, the arc surface at the bottom of the protrusion 4 abuts against the edge of the clamping opening 3 to form an arc surface guide, making the protrusion 4 disengage from the clamping opening 3 more smoothly. However, at the same time, it also has the disadvantage that the arc surface at the bottom of the protrusion 4 abuts against the edge of the clamping opening 3 to form an arc surface guide and automatically disengages during the back-and-forth rotation of the protrusion 4. Compared with the brush head in the prior art, the first hook 31 in this embodiment prevents the protrusion 4 from falling off when rotating back and forth by cooperating with the support surface 32 or the second hook 33 through its own shape or length.

[0040] In the above embodiment, the middle part of the second clamp 6 is rotatably connected to the brush handle 1 or the first clamp 5 along the first rotating shaft 14. The positioning part 7 is also provided with an anti-rotation part 15, and the second clamp 6 abuts against the anti-rotation part 15 to limit the maximum angle of rotation of the second clamp 6 away from the first clamp 5. This allows the positioning part 7 to simultaneously serve as the anti-dislodgement positioning of the brush head 2 and the rotation limiting function of the second clamp 6, thereby simplifying the structure inside the brush handle 1.

[0041] Preferably, the first clamp 5 is integrally formed or fixedly connected with the positioning part 7. The first clamp 5 is provided with a second clamping cavity 16. The second clamping cavity 16 is connected to the clamping port 3 and the first clamping cavity 8. The end of the positioning part 7 extends into the second clamping cavity 16. When the brush head 2 is installed on the brush handle 1, the positioning part 7 guides the front end of the protrusion 4 into the second clamping cavity 16. The positioning part 7 supports the rear end of the protrusion 4 and prevents the protrusion 4 from moving back and forth.

[0042] In the above embodiment, the brush handle 1 further includes a handle section 17, which is a hollow tube integrally formed. The front end of the handle section 17 is integrally formed with the first clamp 5. An inclined angle is provided between the handle section 17 and the first clamp 5. The first clamp 5 has a first opening 18 in the extending direction of the handle section 17. The rear end of the handle section 17 has a second opening 19 communicating with the first opening 18. A control component 20 is provided between the handle section 17 and the first clamp 5. The control component 20 includes a switch 21, a push rod 22 and a spring 23. The push rod 22 enters the handle section 17 from one of the first opening 18 and the second opening 19. The switch 21 drives the push rod 22 to move back and forth to move the second clamp 6, thereby installing and removing the brush head 2.

[0043] Specifically, the brush handle 1 is made of one-piece injection molding of plastic or made of seamless metal tube. Since the brush handle 1 is cleaned in a direction that is inclined relative to the surface to be cleaned during use, an inclined angle is set between the handle section 17 and the first clamp 5 so that the brush head 2 contacts the surface to be cleaned in a parallel or more closely fitted manner. In this embodiment, the handle section 17 and the first clamp 5 are made of one-piece molding of plastic. Compared with metal tube, the one-piece molding process of plastic is simpler and cheaper in processing the inclined clamping position. Moreover, under this processing method, by reducing or eliminating the installation gap on the brush handle 1, sewage and dirt are prevented from entering the cavity of the brush handle 1.

[0044] Preferably, the rear end of the second chuck 6 is provided with an elongated groove 24, and the front end of the push rod 22 is rotatably installed in the elongated groove 24. The push rod 22 moves back and forth, causing the second chuck 6 to rotate around the first rotating shaft 14.

[0045] In this embodiment, the second clamp 6 is rotatably mounted on the first clamp 5, and the first clamp 5 is fixedly mounted on the brush handle 1 or the front end of the brush handle 1 forms the first clamp 5. In use, the relative position or angle between the second clamp 6 and the first clamp 5 is changed by rotating the second clamp 6 to adjust the size of the clamping opening 3, thereby installing and removing the brush head 2.

[0046] In this embodiment, the anti-detachment mechanism works as follows: when the protrusion 4 rotates forward, the front end of the protrusion 4 moves away from the first clamp 5 or has a tendency to rotate away from the first clamp 5, and the rear end of the protrusion 4 moves close to the second clamp 6 or has a tendency to rotate against the second clamp 6, so that the first hook 31 abuts against the support surface 32 or the second hook 33. Since the second clamp 6 rotates forward to the front end in the clamping state, the second clamp 6 needs to rotate backward to open when it releases the protrusion 4. With the abutting cooperation of the first hook 31 and the support surface 32 or the second hook 33, the force transmitted by the first hook 31 to the second clamp 6 has a forward force, so that the second clamp 6 remains in the clamping state and cannot automatically rotate backward to open. Similarly, when the protrusion 4 rotates backward, the front end of the protrusion 4 abuts against the first clamp 5 or tends to abut against the first clamp 5, and the rear end of the protrusion 4 moves away from the second clamp 6 or tends to rotate away from the second clamp 6. Since the second clamp 6 is not subjected to the force of the protrusion 4 or the first hook 31, the second clamp 6 will not automatically rotate backward and open, thereby achieving automatic anti-falling when the protrusion 4 rotates back and forth.

[0047] Preferably, the handle section 17 is provided with a through guide sleeve 25. The guide sleeve 25 and the handle section 17 are located on the same straight line so that the push rod 22 can pass through and restrict the forward and backward movement direction of the push rod 22. The front end of the push rod 22 passes through the guide sleeve 25 in a close manner to reduce the shaking of the push rod 22 when it moves, so as to maintain the same straight line movement.

[0048] In this embodiment, the guide sleeve 25 and the push rod 22 are connected in a sealed manner. The sealing structure can be achieved by, for example, providing a sealing coating on the guide sleeve 25 or the push rod 22, and providing a sealing ring between the guide sleeve 25 and the push rod 22. The push rod 22 is provided with a stop block 26, and a spring 23 is installed between the guide sleeve 25 and the stop block 26. The guide sleeve 25 and the stop block 26 respectively support the front and rear sides of the spring 23, so that the spring 23 deforms when the push rod 22 moves back and forth.

[0049] Preferably, the second clamp 6 is provided with a drain hole 27 that communicates with the first clamping cavity 8, so as to facilitate the discharge of sewage entering the first clamping cavity 8, thereby reducing odor and bacterial growth.

[0050] The handle section 17 has a third opening 28 on its side, and the push rod 22 has a slot 29. The switch 21 passes through the third opening 28 and the slot 29 and is connected to the push rod 22.

[0051] In the above embodiments, a cover 30 is installed on both the first opening 18 and the second opening 19 to prevent the push rod 22 from disengaging from the brush handle 1.

[0052] During installation, first install the spring 23 on the push rod 22, then insert the push rod 22 and the spring 23 into the handle section 17 along the second opening 19 until the front end of the push rod 22 is connected to the long slot 24 of the second clamp 6. Insert the switch 21 along the third opening 28 and connect it to the slot 29 on the push rod 22. Finally, cover the cover 30 onto the first opening 18 and the second opening 19 to complete the installation.

[0053] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A toilet brush with an anti-detachment brush head, comprising a handle and a brush head, wherein the handle and the brush head are detachably connected, characterized in that, The brush handle has a clamping opening for mounting the brush head. The brush head has a protrusion, the size of which is larger than the size of the clamping opening. A neck is provided between the protrusion and the brush head, and a first hook is provided between the protrusion and the neck. A first clamp and a second clamp are provided on both sides of the clamping opening. When the first clamp and the second clamp rotate relative to each other and open, the clamping opening becomes larger, and the protrusion passes through the clamping opening. The first clamp and the second clamp move relative to each other and clamp the neck in the clamping opening. The protrusion is limited and fixed by the edge of the clamping opening. The brush handle has a positioning part for limiting the mounting position of the protrusion. When the protrusion moves back and forth relative to the first clamp or the second clamp, the positioning part prevents the protrusion from driving the first clamp or the second clamp to rotate and open, thus making the clamping opening larger. When the protrusion rotates back and forth relative to the first clamp or the second clamp, the first hook prevents the protrusion from driving the first clamp or the second clamp to rotate and open, thus making the clamping opening larger.

2. The toilet brush with anti-detachment brush head according to claim 1, characterized in that, The positioning part is fixedly disposed on the first clamp, and the second clamp is provided with a first clamping cavity. The first clamping cavity is connected to the clamping opening, and the width of the first clamping cavity is greater than the width of the clamping opening to accommodate the protrusion. The positioning part extends into the first clamping cavity. In the brushing state, the positioning part prevents the protrusion from moving towards the second clamp. The second clamp is provided with a support surface or a second hook at the position corresponding to the clamping opening. The protrusion rotates back and forth relative to the second clamp. The first hook cooperates with the support surface or the second hook to support and prevent the protrusion from driving the second clamp to rotate and open.

3. The toilet brush with anti-detachment brush head according to claim 2, characterized in that, The positioning part includes a first positioning surface and a second positioning surface. The first positioning surface and the second positioning surface limit the protrusion in different directions. The first positioning surface prevents the protrusion from moving in the direction of the second clamp, and the second positioning surface prevents the protrusion from moving into the inner cavity of the brush handle.

4. The toilet brush with anti-detachment brush head according to claim 3, characterized in that, The positioning part has an arc surface with a hook-shaped cross-section. The first positioning surface and the second positioning surface are formed at two different positions above and below the arc surface, respectively.

5. The toilet brush with anti-detachment brush head according to claim 3, characterized in that, The middle part of the second chuck is rotatably connected to the brush handle or the first chuck along the first pivot. The positioning part is also provided with an anti-rotation part. The second chuck abuts against the anti-rotation part to limit the maximum angle of rotation of the second chuck away from the first chuck.

6. The toilet brush with anti-detachment brush head according to claim 5, characterized in that, The first clamp is integrally formed or fixedly connected to the positioning part. The first clamp is provided with a second clamping cavity. The second clamping cavity is connected to the clamping port and the first clamping cavity. The end of the positioning part extends into the second clamping cavity. When the brush head is installed on the brush handle, the positioning part guides the front end of the protrusion into the second clamping cavity. The positioning part supports the rear end of the protrusion and prevents the protrusion from moving back and forth.

7. The toilet brush with anti-detachment brush head according to claim 6, characterized in that, The brush handle also includes a handle section, which is a one-piece hollow tube. The front end of the handle section is integrally formed with the first clamp. An inclined angle is provided between the handle section and the first clamp. The first clamp has a first opening in the extending direction of the handle section. The rear end of the handle section has a second opening communicating with the first opening. A control component is provided between the handle section and the first clamp. The control component includes a switch, a push rod, and a spring. The push rod enters the handle section from one of the first opening and the second opening. The switch drives the push rod to move back and forth to move the second clamp, thereby installing and removing the brush head.

8. The toilet brush with anti-detachment brush head according to claim 7, characterized in that, The rear end of the second chuck is provided with an elongated groove, and the front end of the push rod is rotatably installed in the elongated groove. The push rod moves back and forth, causing the second chuck to rotate around the first pivot.

9. The toilet brush with anti-detachment brush head according to claim 8, characterized in that, The handle section has a through guide sleeve, and the guide sleeve and the handle section are on the same straight line so that the push rod can pass through and restrict the forward and backward movement direction of the push rod. The push rod has a stop block, and the spring is installed between the guide sleeve and the stop block. The guide sleeve and the stop block support the front and rear sides of the spring respectively so that the spring deforms when the push rod moves forward and backward.

10. The toilet brush with anti-detachment brush head according to claim 9, characterized in that, The second clamp or the first clamping cavity is provided with a drain hole, through which water in the first clamping cavity can flow out.

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