Toilet brush with replaceable brush head

Abstract

The utility model relates to the technical field of toilet brushes, in particular to a toilet brush with a replaceable brush head. A toilet brush with a replaceable brush head comprises the brush head with a connector and a brush rod with a cavity, a chuck and a movable rod capable of moving in the length direction of the brush rod are arranged in the cavity of the brush rod, and the movable rod is matched with a driving part for driving the movable rod to move towards the chuck side. The chuck is arranged in a split mode and comprises at least two split parts, an expansion hole used for being matched with the end of the movable rod is formed between the split parts, an expansion head stretching into the expansion hole is arranged at the end of the movable rod, and the outer side of the chuck is sleeved with an annular elastic piece for tightening the split parts. And when the movable rod moves towards the chuck side to enable the expansion head to extend into the expansion hole, the split parts are far away from each other to realize expansion of the chuck. The toothbrush has the advantage that a user can replace the brush head conveniently.

Description

Technical Field

[0001] This utility model relates to the field of toilet brush technology, and in particular to a toilet brush with replaceable brush heads. Background Technology

[0002] Previously, toilet brush heads and handles on the market were basically one piece and could not be separated. When using them, the toilet brush heads were prone to accumulating dirt and getting tangled with hair, making them inconvenient to clean. After use, they were inserted into the base or hung on the wall, which easily led to the growth of bacteria and the production of odors.

[0003] In response to the above situation, existing technology has proposed toilet brushes with replaceable wipe heads. Although the wipe heads can be replaced, the replacement process is cumbersome because the clamping structure is located on the outside of the brush handle. It is also easy for dirt to accumulate, which is not conducive to cleaning and affects the user experience. Summary of the Invention

[0004] To address the shortcomings of existing technologies, a toilet brush that allows users to easily replace the brush head is provided.

[0005] This utility model is achieved using the following technical solution: a toilet brush with a replaceable brush head, comprising a brush head with a connecting head and a brush handle with a cavity. The cavity of the brush handle is provided with a clamp and a movable rod that can move along the length of the brush handle. The movable rod is equipped with a driving member that drives the movable rod to move towards the clamp. The clamp is a split type and includes at least two split parts, with an expansion hole formed between the split parts for engaging with the end of the movable rod. The end of the movable rod is provided with an expansion head that extends into the expansion hole. An annular elastic member is sleeved on the outside of the clamp to tighten the split parts. When the movable rod moves towards the clamp side, causing the expansion head to extend into the expansion hole, the split parts move away from each other to allow the clamp to expand.

[0006] In use, the user drives the movable rod towards the clamping head using the drive mechanism. When the expansion head extends into the expansion hole, the separate parts move away from each other to allow the clamping head to expand, removing the old brush head and placing the connector of the new brush head between the separate parts. The user then releases the drive mechanism. At this point, the annular elastic element causes the separate parts of the clamping head to retract, making the expansion hole smaller. The smaller expansion hole forces the expansion head out in the opposite direction, causing the separate parts to contract further, thus clamping the connector of the brush head and allowing for brush head replacement.

[0007] Among them, the annular elastic element can be a rubber band, a sealing ring, a coil spring, etc.

[0008] The brush handle has an open end with a clamp, allowing the brush head connector to engage with the clamp inside the brush handle.

[0009] This design places the clamp inside the brush handle, thus preventing dirt from directly contacting the clamp. The clamp is tightened by a ring-shaped elastic element and expanded by a movable rod. The user only needs to move the movable rod using the drive mechanism, making the operation process quite simple.

[0010] Preferably, the chuck has an annular groove on its circumferential outer wall, and the annular elastic element is fitted inside the annular groove.

[0011] The annular groove is used to restrict the position of the annular elastic element, making the annular elastic element more stable.

[0012] Preferably, the outer circumferential wall of the clamp and the inner circumferential wall of the brush rod are provided with a plurality of radially extending positioning protrusions and positioning grooves, the positioning protrusions and positioning grooves slidingly engaging in the radial direction and abutting against each other in the axial direction.

[0013] The combination of positioning protrusions and positioning grooves restricts the movement direction of the chuck during expansion and tightening, making the chuck more stable during expansion and tightening.

[0014] Preferably, the width of the expansion head gradually decreases from the side away from the chuck to the side closer to the chuck, the width of the expansion hole gradually decreases from the side closer to the expansion head to the side away from the expansion head, and the minimum width of the expansion head is greater than the minimum width of the expansion hole.

[0015] The above settings are used to achieve uniform expansion of the chuck, and the expansion head can be shaped like a frustum, truncated cone, prismatic, etc.

[0016] Preferably, a clamping hole for clamping the connector is formed between the split parts, the maximum diameter of the clamping hole is larger than the diameter at the opening of the clamping hole, and the connector has a shape adapted to the clamping hole.

[0017] With the above settings, after the connector is clamped by the clamping hole, since the maximum width of the connector is greater than the diameter of the opening of the clamping hole, the connector is not easy to slip out of the clamping hole, thereby increasing the stability after clamping.

[0018] Preferably, both the clamping hole and the connector are spherical.

[0019] The spherical shape eliminates the need to adjust the clamping angle, making it easy for users to grip the brush head.

[0020] Preferably, the cavity is provided with a sliding groove that slides with the movable rod, and a spring that drives the movable rod to move away from the clamp.

[0021] The sliding groove makes the movement of the movable rod more stable, while the elastic element further facilitates the reset of the movable rod.

[0022] Preferably, the brush rod has a through hole at the axial end opposite to the chuck, and the driving member is connected to the axial end opposite to the chuck, with the driving member extending to the outside of the through hole.

[0023] When the user presses this drive component, the movable lever can move towards the clamp side. The drive component can be integrally formed with the movable lever, meaning the drive component is also part of the movable lever.

[0024] Preferably, the brush rod has a clearance groove extending along its length on its circumferential sidewall, and the sidewall of the movable rod is connected to the drive member extending radially and extending into the clearance groove, the drive member slidingly engaging with the clearance groove.

[0025] The user moves the movable rod by pulling the drive component, causing it to move within the clearance groove.

[0026] Preferably, the brush rod has a radially extending clearance hole on its circumferential sidewall, one end of the drive member extends out of the clearance hole, the other end of the drive member is located inside the brush rod and has a first pressing slope, and the end of the movable rod away from the clamp has a second pressing slope that matches the first pressing slope. When the drive member is pressed, the movable rod moves toward the clamp side.

[0027] The movement of the driving component is achieved by pressing, and the movement of the movable rod is achieved by the cooperation of the first and second pressing inclined surfaces.

[0028] Compared with the existing technology, this utility model has the advantage of making it easier for users to replace the brush head. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of embodiment 1 of the utility model;

[0030] Figure 2 for Figure 1 A schematic diagram of the structure after removing one side of the brush rod housing;

[0031] Figure 3 for Figure 1 Exploded view;

[0032] Figure 4 for Figure 1 A sectional view and an enlarged view of the clamp;

[0033] Figure 5 for Figure 1 Another section view and an enlarged view of the clamp;

[0034] Figure 6 This is a schematic diagram of the structure of Example 2;

[0035] Figure 7for Figure 6 A schematic diagram of the structure after removing one side of the brush rod housing;

[0036] Figure 8 This is a schematic diagram of the structure of Example 3;

[0037] Figure 9 for Figure 8 A schematic diagram of the structure after removing one side of the brush rod housing.

[0038] Reference numerals: 1. Brush rod; 11. First rib; 111. Positioning groove; 12. Second rib; 13. Insertion part; 2. Brush head; 21. Connector; 3. Drive component; 31. Protrusion; 311. First extrusion slope; 4. Movable rod; 41. Expansion head; 42. Second extrusion slope; 5. Clamp; 51. Separate part; 52. Positioning protrusion; 53. Expansion hole; 54. Clamping hole; 6. Spring; 7. Annular elastic element; 8. Clearance groove. Detailed Implementation

[0039] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0040] Example 1

[0041] like Figures 1 to 3 As shown in Embodiment 1, a toilet brush with a replaceable brush head is disclosed, including a brush rod 1 and a brush head 2. The brush rod 1 is hollow to form a cavity, and a clamp 5 is provided inside the lower end of the brush rod 1. The clamp 5 is used to connect the connector 21 of the brush head 2. A movable rod 4 extending along the length direction of the brush rod 1 is provided in the cavity of the brush rod 1. The movable rod 4 can be moved back and forth along the length direction of the brush rod 1 by a driving member 3. A radially extending clearance hole (not shown in the figure) is provided on the circumferential side wall of the brush rod 1. One end of the driving member 3 extends out of the clearance hole, and the other end of the driving member 3 is inserted into a cylindrical insertion part 13, which is disposed inside the brush rod 1. The other end of the driving member 3 includes a protrusion 31, which is located inside the brush rod. The width of the protrusion 31 gradually increases from bottom to top to have a first pressing slope 311. The end of the movable rod 4 away from the clamp 5 has a second pressing slope 42 that is adapted to the first pressing slope 311. When the drive member 3 is pressed, the first pressing slope 311 presses the second pressing slope 42 to move the movable rod 4 toward the clamp 5.

[0042] Several axially spaced second ribs 12 are provided on the inner wall of the brush rod 1. Each second rib 12 has an arc-shaped opening, and a circular hole is formed between two radially opposite second ribs 12. The circular hole slides with the movable rod 4. The several circular holes form a cavity in the brush rod 1, which has a sliding groove that slides with the movable rod 4. Alternatively, the groove can be set directly in the cavity as an axially extending and laterally open groove, but this design is more wasteful of material. The design of the second ribs 12 can save material and also strengthen the structural strength. A spring 6 is sleeved on the movable rod 4. The two ends of the spring 6 abut against one end of the movable rod 4 and the second ribs 12, respectively. The spring 6 acts on the movable rod 4, causing the movable rod to move away from the clamp 5.

[0043] like Figures 2 to 5 As shown, the chuck 5 is a split design, comprising two symmetrically arranged split parts 51. The end of the chuck 5 near the movable rod 4 has an expansion hole 53, and the end away from the movable rod 4 has a clamping hole 54. An annular groove is provided on the outer wall of the chuck 5, and an annular elastic element 7 is provided within the annular groove. The annular elastic element 7 can be an existing elastic component such as a rubber band, coil spring, or sealing ring that can tighten the chuck 5. An expansion head 41 is provided at the end of the movable rod 4 near the chuck 5, extending into the expansion hole 53. The width of the expansion head 41 gradually decreases from the side away from the chuck 5 to the side near the chuck 5, and the width of the expansion hole 53 gradually decreases from the side near the expansion head 41 to the side away from the expansion head 41. The minimum width of the expansion head 41 is greater than the minimum width of the expansion hole 53. When the movable rod 4 moves towards the chuck 5, as the expansion head 41 gradually inserts into the expansion hole 53, the diameter of the expansion hole 53 increases, causing the split parts 51 to move further apart, thereby increasing the diameter of the clamping hole 54. The expansion head 41 is always in contact with the expansion hole 53.

[0044] Both the clamping hole 54 and the connector 21 are spherical, so that the maximum diameter of the clamping hole 54 is larger than the diameter at the opening of the clamping hole 54.

[0045] The brush rod 1 has a plurality of radially extending first ribs 11 on the inner wall of the clamp 5. The plurality of first ribs 11 are spaced apart in the axial direction, and a positioning groove 111 is formed between two adjacent first ribs 11. A plurality of radially extending positioning protrusions 52 are provided on the circumferential outer wall of the clamp. The positioning protrusions 52 and the positioning grooves 111 slide in the radial direction and abut against each other in the axial direction, that is, the positioning protrusions 52 abut against the first ribs 11.

[0046] Example 2

[0047] like Figure 6 and Figure 7As shown, the difference between Embodiment 2 and Embodiment 1 is that in Embodiment 2, the driving component 3 extends along the length of the movable rod 4, and the end of the brush rod 1 away from the clamp 5 is also provided with a through hole. The driving component 3 extends out of the through hole of the brush rod 1, and the user drives the movable rod 4 to move by pressing the driving component 3 in the axial direction. The driving component 3 can be integrally injection molded with the movable rod 4, or it can be a separate component.

[0048] Example 3

[0049] like Figure 8 and Figure 9 As shown, the difference between this embodiment 3 and embodiment 1 is that: in this embodiment 3, a clearance groove 8 extending along its length direction is provided on the circumferential side wall of the brush rod 1, and a driving member 3 extending into the clearance groove 8 is connected to the side wall of the movable rod 4. The driving member 3 and the clearance groove 8 are slidably engaged, and the user moves the driving member 3 to realize the movement of the movable rod 4.

[0050] When in use, the user applies pressure or flicks the drive unit 3, causing the movable rod 4 to move toward the clamp 5. At this time, the expansion head 41 will squeeze the expansion hole 53, increasing the distance between the split parts 51 to expand the clamping hole 54. The user can then remove the old brush head 2 and place the connector 21 of the new brush head 2 between the clamping holes 54. The user then releases the drive unit 3 to reset it, thus completing the replacement and fixing of the brush head 2.

Claims

1. A toilet brush with replaceable brush heads, characterized in that: The device includes a brush head with a connector and a brush rod with a cavity. The cavity of the brush rod contains a clamp and a movable rod that can move along the length of the brush rod. The movable rod is equipped with a drive unit that moves the movable rod towards the clamp. The clamp is a split type and includes at least two split parts. An expansion hole is formed between the split parts for engaging with the end of the movable rod. The end of the movable rod has an expansion head that extends into the expansion hole. An annular elastic element is fitted on the outside of the clamp to tighten the split parts. When the movable rod moves towards the clamp, causing the expansion head to extend into the expansion hole, the split parts move away from each other to expand the clamp.

2. The toilet brush with replaceable brush head according to claim 1, characterized in that: The chuck has an annular groove on its outer circumferential wall, and the annular elastic element is fitted inside the annular groove.

3. The toilet brush with replaceable brush head according to claim 1, characterized in that: The outer circumferential wall of the clamp and the inner circumferential wall of the brush rod are provided with a plurality of radially extending positioning protrusions and positioning grooves. The positioning protrusions and positioning grooves slide in the radial direction and abut against each other in the axial direction.

4. The toilet brush with replaceable brush head according to claim 1, characterized in that: The width of the expansion head gradually decreases from the side away from the chuck to the side closer to the chuck, and the width of the expansion hole gradually decreases from the side closer to the expansion head to the side away from the expansion head. The minimum width of the expansion head is greater than the minimum width of the expansion hole.

5. The toilet brush with replaceable brush head according to claim 1, characterized in that: A clamping hole for clamping the connector is formed between the split parts. The maximum diameter of the clamping hole is larger than the diameter at the opening of the clamping hole. The connector has a shape that is adapted to the clamping hole.

6. The toilet brush with replaceable brush head according to claim 5, characterized in that: Both the clamping hole and the connector are spherical.

7. The toilet brush with replaceable brush head according to claim 6, characterized in that: The cavity is provided with a sliding groove that slides with the movable rod, and a spring that drives the movable rod to move away from the clamp.

8. The toilet brush with replaceable brush head according to any one of claims 1 to 7, characterized in that: The brush rod has a through hole at the axial end opposite to the chuck, and the movable rod is connected to the drive member at the axial end opposite to the chuck, with the drive member extending to the outside of the through hole.

9. The toilet brush with replaceable brush head according to any one of claims 1 to 7, characterized in that: The brush rod has a clearance groove extending along its length on its circumferential side wall, and the side wall of the movable rod is connected to the drive member that extends into the clearance groove, and the drive member slides in conjunction with the clearance groove.

10. The toilet brush with replaceable brush head according to any one of claims 1 to 7, characterized in that: The brush rod has a radially extending clearance hole on its circumferential sidewall. One end of the drive member extends out of the clearance hole, and the other end of the drive member is located inside the brush rod and has a first pressing slope. The end of the movable rod away from the chuck has a second pressing slope that matches the first pressing slope. When the drive member is pressed, the movable rod moves toward the chuck side.

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