An electric toilet brush

Abstract

This invention discloses an electric toilet brush, including a housing, a replaceable brush head on the housing, and a disassembly device on the housing for removing the replaceable brush head. The disassembly device includes a brush head hook and a rotatable push rod disposed inside the housing. A top plug is sleeved on the push rod, and a threaded portion is provided on the outer circumference of the push rod. The top plug can be threadedly connected to the threaded portion.

Description

Technical Field

[0001] This invention relates to the field of household products, specifically an electric toilet brush. Background Technology

[0002] Toilet brushes are a common household item used frequently in daily life. They typically consist of a handle for gripping and a brush, which is usually spherical or rectangular. Since toilet brushes are usually driven by human power, electric toilet brushes powered by motors have appeared on the market.

[0003] The State Intellectual Property Office has published a utility model patent with patent number CN201720042625.3 entitled "An Electric Toilet Brush". This patent integrates a motor and cleaning fluid into the toilet brush. While the motor drives the toilet brush to rotate, the centrifugal force is used to evenly spread the cleaning fluid on the inner wall of the toilet, which reduces the waste of cleaning fluid and improves the cleaning ability of the toilet brush.

[0004] Although the patent uses an electric motor to drive the toilet brush to rotate, due to its structural limitations, disassembling the brush head is very complicated, and the internal structure of the brush head has capillary channels, making it complex and prone to damage.

[0005] The State Intellectual Property Office has published a utility model patent with patent number 201620378093.6, entitled "Electric Toilet Brush." ​​This patent includes a handle, a connecting rod, a universal joint, a brush head, and bristles. One end of the handle is connected to one end of the connecting rod, and the other end of the connecting rod is fixedly connected to the universal joint. The other end of the universal joint is connected to the brush head. The handle has a hollow cavity containing a power supply, a motor, and an eccentric wheel. The power supply is electrically connected to the motor, and the eccentric wheel is also connected to the motor. A circuit switch is provided on the handle and electrically connected to the power supply. The connecting rod is a telescopic rod. The brush head includes a transparent outer shell, a fluorescent layer, and a waterproof LED light. The control switch for the waterproof LED light is located on the handle and electrically connected to the waterproof LED light.

[0006] The patented universal joint is movably connected to the brush head, allowing the brush head to be disassembled for cleaning or replacement periodically. Although the brush head can be replaced, disassembly is relatively complicated, and the installation of the brush head also requires manual connection of the universal joint and the brush head. Disassembly is also time-consuming and labor-intensive, as it involves manually separating the universal joint and the brush head. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides an electric toilet brush that can automatically disassemble and install the brush head. Installing the brush head is very convenient, requiring only one press, and disassembling it is done automatically by pressing a switch, making it easy to use.

[0008] To address the above problems, the present invention provides the following technical solution:

[0009] An electric toilet brush includes a housing with a replaceable brush head, characterized in that: the housing is provided with a disassembly device for removing the replaceable brush head.

[0010] The disassembly device includes a brush head hook and a rotatable push rod disposed inside the housing. A top plug is fitted over the push rod, and a threaded section is provided on the outer circumference of the push rod. The top plug can be threadedly connected to the threaded section.

[0011] When the push rod rotates forward, the threaded part of the push rod is disengaged from the threaded part of the push plug, and the push plug does not rotate due to the lack of force.

[0012] The brush head hook has a cylindrical structure and consists of brush head hook A and brush head hook B. The brush head hook A and brush head hook B are fastened together to form a cylindrical structure, and the brush head hook has a transition part inside.

[0013] The brush head latch includes a brush head chamber, a top plug chamber, and a push rod spring chamber. The top plug chamber is located between the brush head chamber and the push rod spring chamber. A conical transition section is formed between the top plug chamber and the brush head chamber. The outer surface of the top plug is adapted to the transition section.

[0014] A push rod spring is installed in the push rod spring chamber, and a top plug spring is installed in the top plug chamber. The top plug spring is located between the inner wall of the top plug chamber and the top plug, and the push rod spring is located between the inner wall of the push rod spring chamber and the stop head.

[0015] When the push rod reverses, the threaded part of the push rod drives the push plug to move along the push rod. The push plug has a frustum-shaped structure. Under the action of the thread, the push plug squeezes the transition part, thereby opening the brush head hook.

[0016] The push rod has a connection groove near the replaceable brush head to accommodate the connection part.

[0017] The brush head has a connecting part, and the end face of the connecting part has toothed protrusions; the groove of the connecting part has recesses corresponding to the toothed protrusions.

[0018] The brush head hook has three chambers: a top plug spring chamber, a push rod spring chamber, and a threaded chamber. The transition between the threaded chamber and the top plug spring chamber forms a tapered transition section, which is adapted to the shape of the top plug. A top plug spring is installed in the top plug spring chamber, located between the top plug and the inner wall of the top plug spring chamber. A push rod spring is located in the push rod spring chamber, located between the inner wall of the push rod spring chamber and the stop head.

[0019] Compared with the prior art, the beneficial effects of the present invention are: the housing is provided with a cleaning switch. When the cleaning switch is turned on, the motor rotates forward, which drives the push rod to drive the replaceable brush head to rotate forward, and the cleaning work begins.

[0020] At this time, the threaded part of the push rod is disengaged from the threaded part of the top plug, and is not under force or moving. When the exit button is opened, the housing is equipped with an exit button, which causes the motor to reverse several times, driving the push rod to reverse, and the threaded part of the push rod drives the top plug, causing the top plug to move backward.

[0021] The brush head is dislodged, and after the motor reverses several times, the control board controls the motor to rotate forward, driving the top plug forward. After the hook resets and the top plug moves to its front limit, the threaded hole of the top plug disengages from the threaded part of the top rod. The top plug is then in a loosely fitted state due to the force applied by the top plug spring, and the forward movement of the motor no longer affects the top plug.

[0022] This electric toilet brush can automatically remove and install the brush head. Installing the brush head is very convenient; it can be completed with just one press. When removing the brush head, simply press the switch to automatically remove it. It is easy to use. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals.

[0024] In the accompanying drawings, the components or parts are not necessarily drawn to scale.

[0025] Figure 1 A perspective view of the present invention;

[0026] Figure 2 This is a sectional view along line AA of Embodiment 1 of the present invention;

[0027] Figure 3 for Figure 2 Enlarged view of point B in the middle;

[0028] Figure 4 This is a sectional view along line AA of Embodiment 2 of the present invention;

[0029] Figure 5 for Figure 4 Enlarged view of point C in the middle;

[0030] Figure 6 This is a schematic diagram of the upper shell of the handle;

[0031] Figure 7 This is a schematic diagram of the replaceable brush head.

[0032] Figure 8This is a schematic diagram of the transmission between the top plug and the guide block.

[0033] In the picture:

[0034] 1. Replaceable brush head; 101. Brush head; 102. Connecting part; 103. Toothed protrusion; 2. Handle upper shell; 201. Motor chamber; 202. Guide block; 3. Handle lower shell; 4. Brush head hook A; 401. Brush head hook; 41. Brush head chamber; 402. Top plug spring chamber; 403. Push rod spring chamber; 404. Threaded chamber; 405. Transition part; 5. Brush head hook B; 6. Top plug; 61. Top plug threaded hole; 62. Guide groove; 7. Push rod; 71. Threaded part; 72. Connecting part groove; 73. Recess; 74. Stop head; 8. Motor; 9. Control board; 10. Top plug spring; 11. Push rod spring; 12. Housing; 10'. Top plug spring; 11'. Push rod spring; 403'. Push rod spring chamber; 405'. Transition part; 74'. Stop head. Detailed Implementation

[0035] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0036] Example 1, as shown in the attached document Figure 1 Appendix Figure 2 and attached Figure 3 As shown, an electric toilet brush includes a housing 12, on which a replaceable brush head 1 is provided. The replaceable brush head 1 includes a soft brush head 101 and a connecting part 102. The brush head 101 is disc-shaped, but can also be other shapes. The brush head can have bristles.

[0037] The housing contains a push rod 7, and the outer circumference of the push rod 7 has a threaded portion 71 and a stop head 74.

[0038] The push rod 71 has a connecting groove 72 near the replaceable brush head 1 to accommodate the connecting part 102; the connecting part 102 is conical; and it is convenient to insert into the connecting groove 72.

[0039] The housing 12 is equipped with a motor 8, and the rotating shaft of the motor 8 is connected to the push rod 7 for transmission. The motor 8 can rotate in both directions.

[0040] The end face of the connecting part 102 has a toothed protrusion 103; the groove 72 of the connecting part has a recess 73 corresponding to the toothed protrusion 103.

[0041] The push rod 7 is fitted with a top plug 6, which is a frustum-shaped structure. The top plug 6 has a threaded hole 61 inside, which can be threadedly connected to the threaded part 71.

[0042] The push rod 7 is provided with a brush head hook 401, which is a cylindrical structure. The brush head hook is composed of brush head hook 4 and brush head hook 5, which are fastened together to form a cylindrical structure. The top plug 6 is located inside the cylindrical structure.

[0043] The brush head hook 401 has three chambers: a top plug spring chamber 402, a push rod spring chamber 403, and a threaded chamber 404.

[0044] A top stopper spring 10 is provided inside the top stopper spring chamber 402. The top stopper spring 10 is located inside the top stopper spring chamber 402 and between the top stopper 6 and the inner wall of the top stopper spring chamber 402. A push rod spring 403 is located inside the push rod spring chamber 403 and between the inner wall of the push rod spring chamber 403 and the stop head 72.

[0045] A tapered transition portion 405 is formed at the transition between the threaded chamber 404 and the top plug spring chamber 402; the transition portion 405 is adapted to the shape of the top plug 6.

[0046] The housing includes an upper handle shell 2 and a lower handle shell 3, which are fastened together to form a cylindrical structure.

[0047] The housing 12 is equipped with a motor 8 and a control board 9. The rotating shaft of the motor 8 is connected to the push rod 7. The end of the push rod 7 away from the replaceable brush head 1 is connected to the rotating shaft of the motor 8. The connection can be made by key.

[0048] Before use, the replaceable brush head 1 is separated from the handle; during use, the replaceable brush head 1 is inserted into the housing 12, and the replaceable brush head 1 is embedded in the hook part of the brush head to fix it in place and prevent it from falling off.

[0049] The end face of the connecting part 102 has a toothed protrusion 103, which is tapered to facilitate guidance and force application during assembly; the groove 72 of the connecting part has a recess 73 corresponding to the toothed protrusion 103.

[0050] The housing 12 is equipped with a cleaning switch 13. When the cleaning switch 13 is turned on, the motor rotates forward, which drives the push rod 7 to rotate the replaceable brush head 1 in the forward direction, and the cleaning work begins.

[0051] At this time, the threaded part of the push rod 7 is disengaged from the threaded part of the top plug 6, and is not under force and has no movement; when the exit button is opened, the housing 12 is provided with an exit button 13, which causes the motor to reverse several times, driving the push rod 7 to reverse, and the threaded part of the push rod drives the top plug 6, causing the top plug 6 to move towards the motor 8. Since the top plug 6 has a frustum-shaped structure, the top plug 6 is squeezed by the thread under the action of the thread, thereby opening the brush head hook 401.

[0052] Since the brush head connection 102 is no longer restrained by the brush head hook 401, the replaceable brush head will fall off due to gravity. After the motor reverses several times, the control board controls the motor to rotate forward, driving the top plug to move forward. After the hook resets and the top plug moves to the front limit state, the threaded hole of the top plug 6 disengages from the threaded part of the top rod 7. The top plug is in a loosely fitted state due to the force applied by the top plug spring, and the forward movement of the motor no longer affects the top plug.

[0053] As attached Figure 6 As shown, a motor chamber 201 is provided on the upper shell 2 of the handle; a long strip-shaped guide block 202 is provided on the inner wall of the upper shell 2 of the handle.

[0054] As attached Figure 7 As shown, the replaceable brush head 1 includes a brush head 101 and a connecting part 102, wherein the connecting part 102 is provided with toothed protrusions 103.

[0055] As attached Figure 8 As shown, a long strip-shaped guide block 202 is fixedly installed on the inner wall of the upper shell 2 of the handle, and a guide groove 62 that cooperates with the guide block 202 is provided on the top plug 6.

[0056] The top plug 6 can slide along the guide block 202 inside the upper shell 2 of the handle.

[0057] When in use, the brush head is inserted into the handle, and the brush head is engaged with the hook part of the brush head to secure it and prevent it from falling off. The top of the brush head is the connecting part 102, and the teeth of the connecting part 102 are tapered to facilitate guidance and force application during the assembly process of the hook. To prevent the brush head from not being able to be inserted to the bottom when the teeth are not engaged, the push rod can be moved axially backward.

[0058] When in use, the brush head is inserted into the handle, and the brush head is engaged with the hook part of the brush head to secure it and prevent it from falling off. The top of the brush head is the connecting part 102, and the teeth of the connecting part 102 are tapered to facilitate guidance and force application during the assembly process of the hook. To prevent the brush head from not being able to be inserted to the bottom when the teeth are not engaged, the push rod can be moved axially backward.

[0059] When the motor is working, the push rod rotates, supplemented by the axial force applied by the spring, causing the gears to mesh and drive the brush head to rotate. The bevel gear and the head positioning pin make the engagement with the push rod more stable. The tooth profile of the engagement gear is sawtooth-shaped, making it easier to disengage. Turning on the cleaning switch makes the motor rotate forward, driving the push rod and then the brush head to rotate forward, starting the cleaning process. Turning on the exit button makes the motor rotate in reverse several times, driving the push rod in reverse. The push rod thread drives the top plug, causing the top plug to move forward, opening the hook and allowing the brush head to fall off. At this time, the push rod thread and the top plug thread are in the disengagement direction, and there is no force or movement.

[0060] The upper and lower covers have two guide blocks 202, and the top plug has two corresponding guide grooves 62, preventing the top plug from rotating but allowing it to slide axially. The engaging threads convert the motor's torque into a forward and backward thrust, disengaging the latch. After the top plug reaches its front limit, the top plug thread disengages from the push rod thread, and the motor's forward movement no longer affects the top plug. However, due to spring force, the top plug and push rod threads are in a loosely coupled state, requiring the next motor reversal to activate.

[0061] The end of the brush head hook 401 is chamfered, which facilitates the insertion of the brush head and provides a guide for the brush head.

[0062] Example 2, as shown in the attached document Figure 4 and attached Figure 5 As shown in the above embodiment, the brush head hook 401 can be of this structure. The brush head hook 401 includes a brush head chamber 41', a top plug chamber 402', and a push rod spring chamber 403'. The top plug chamber 402' is located between the brush head chamber 41' and the push rod spring chamber 403'. A conical transition portion 405' is formed between the top plug chamber 402' and the brush head chamber 41'. The outer surface of the top plug 6 is adapted to the transition portion 405'.

[0063] The top plug chamber 402' and the push rod spring chamber 403' are directly connected.

[0064] A push rod spring 11' is provided in the push rod spring chamber 403', and a top plug spring 10' is provided in the top plug chamber 402'. The top plug spring 10' is located between the inner wall of the top plug chamber 402' and the top plug 6, and the push rod spring 11' is located between the inner wall of the push rod spring chamber 403' and the stop head 74'.

[0065] The push rod 7 has a threaded section 71 and a stop head 74' on its outer circumference.

[0066] The housing 12 is equipped with a cleaning switch 13. When the cleaning switch 13 is turned on, the motor rotates forward, which drives the push rod 7 to rotate the replaceable brush head 1 in the forward direction, and the cleaning work begins.

[0067] At this time, the threaded part of the push rod 7 is disengaged from the threaded part of the top plug 6 and is not under force, but it is in a loose contact under the action of the top plug spring 10' and has no movement; Open the exit button, the housing 12 is provided with an exit button 13, which makes the motor reverse several times, drives the push rod 7 to reverse, and the threaded part of the push rod drives the top plug 6, causing the top plug 6 to move away from the motor 8. Since the top plug 6 has a frustum-shaped structure, the top plug 6 is squeezed by the thread under the action of the thread, thereby opening the brush head hook 401. The rest of the structure in this embodiment is the same as in embodiment 1.

[0068] When in use, the brush head is inserted into the handle, and the brush head is engaged with the hook part of the brush head to secure it and prevent it from falling off. The top of the brush head is the connecting part 102, and the teeth of the connecting part 102 are tapered to facilitate guidance and force application during the assembly process of the hook. To prevent the brush head from not being able to be inserted to the bottom when the teeth are not engaged, the push rod can be moved axially backward.

[0069] When the motor is working, the push rod rotates, supplemented by the axial force applied by the spring, causing the gears to mesh and drive the brush head to rotate. The bevel gear and the head positioning pin make the engagement with the push rod more stable. The tooth profile of the engagement gear is sawtooth-shaped, making it easier to disengage. Turning on the cleaning switch makes the motor rotate forward, driving the push rod and then the brush head to rotate forward, starting the cleaning process. Turning on the exit button makes the motor rotate in reverse several times, driving the push rod in reverse. The push rod thread drives the top plug, causing the top plug to move forward, opening the hook and allowing the brush head to fall off. At this time, the push rod thread and the top plug thread are in the disengagement direction, and there is no force or movement.

[0070] The upper and lower covers have two guide blocks 202, and the top plug has two corresponding guide grooves 62, preventing the top plug from rotating but allowing it to slide axially. The engagement threads convert the motor's torque into a forward and backward thrust, disengaging the latch. After the top plug reaches its front limit, the top plug thread disengages from the push rod thread, and the motor's forward movement no longer affects the top plug. However, due to spring force, the top plug and push rod threads are in a loosely fitted state, requiring the next motor reversal to activate them. The remaining structure of this embodiment is the same as in Embodiment 1.

[0071] In Example 3, the top plug chamber 402' and the push rod spring chamber 403' can be directly connected, the push rod spring 11' can be omitted, and only the top plug spring 10' is retained. The rest of the structure in this example is the same as in Example 2.

Claims

1. An electric toilet brush, comprising a housing (12), wherein a replaceable brush head (1) is provided on the housing (12), characterized in that... The housing (12) is provided with a disassembly device for removing the replaceable brush head (1); the disassembly device includes a brush head hook (401) and a rotatable push rod (7) disposed inside the housing. A top plug (6) is sleeved on the push rod (7). A threaded portion (71) is provided on the outer circumference of the push rod (7). The top plug (6) can be threadedly connected to the threaded portion (71). The brush head hook (401) has a simple structure and is composed of a brush head hook A (4) and a brush head hook B (5). The brush head hook is formed by connecting the brush head hook A (4) and the brush head hook B (5) together to form a cylindrical structure. The brush head hook (401) has a transition part inside. When the push rod (7) reverses, the threaded part of the push rod drives the top plug (6) to move along the push rod (7). The top plug (6) has a frustum structure. Under the action of the thread, the top plug (6) squeezes the transition part, thereby expanding the brush head hook (401). When the push rod (7) rotates forward, the threaded part of the push rod (7) and the thread of the top plug (6) are in the disengagement direction, and the top plug (6) is not under force and does not rotate.

2. An electric toilet brush as described in claim 1, characterized in that... The brush head hook (401) includes a brush head chamber (41'), a top plug chamber (402) and a push rod spring chamber (403). The top plug chamber (402) is located between the brush head chamber (41) and the push rod spring chamber (403'). A conical transition section (405') is formed between the top plug chamber (402) and the brush head chamber (41'). The outer surface of the top plug (6) is adapted to the transition section (405').

3. An electric toilet brush as described in claim 2, characterized in that, A push rod spring (11) is provided in the push rod spring chamber (403'), and a top plug spring (10') is provided in the top plug chamber (402). The top plug spring (10) is located between the inner wall of the top plug chamber (402') and the top plug (6), and the push rod spring (11') is located between the inner wall of the push rod spring chamber (403) and the stop head (74).

4. An electric toilet brush as described in claim 3, characterized in that... The push rod (71) has a connection groove (72) near the replaceable brush head (1) to accommodate the connection part (102).

5. An electric toilet brush as described in claim 4, characterized in that... The brush head (1) has a connecting part (102), and the end face of the connecting part (102) has a toothed protrusion (103); the groove (72) of the connecting part has a recess (73) corresponding to the toothed protrusion (103).

6. An electric toilet brush as described in claim 5, characterized in that... The brush head hook (401) has three chambers: a top plug spring chamber (402), a push rod spring chamber (403), and a threaded chamber (404). The transition between the threaded chamber (404) and the top plug spring chamber (402) forms a conical transition section (405). The transition section (405) is adapted to the shape of the top plug (6). A top plug spring (10) is provided in the top plug spring chamber (402). The top plug spring (10) is located in the top plug spring chamber (402) and between the top plug (6) and the inner wall of the top plug spring chamber (402). The push rod spring (403) is located in the push rod spring chamber (403). The push rod spring (403) is located between the inner wall of the push rod spring chamber (403) and the stop head (72).

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