Toothbrush with replaceable brush head

Abstract

The utility model discloses a toothbrush with a replaceable brush head, which comprises a brush handle, a connecting rod and the brush head, two ends of the connecting rod are respectively and fixedly connected with the brush handle and the brush head, and the brush head is provided with a storage groove. Two movable plates are driven to synchronously and horizontally move rightwards through a first pull rod, so that the left side of a limiting block is driven to move to the position flush with the left side of an inner cavity of a rectangular open groove, then a bottom plate is pulled to move upwards, and therefore the movable blocks and the limiting block can be separated from the rectangular open groove and the inner cavity of a rectangular cavity; the bottom plate provided with the bristles can be detached for replacement, the storage cavity can be used for storing a standby brush head, when replacement is needed, the base is driven to rotate by screwing the cross knob, so that the threaded pipe can be screwed out of the storage cavity, the standby brush head can be taken out and replaced, the replacement convenience of the brush head is improved, and meanwhile the replacement efficiency of the brush head is improved. And the use cost of the toothbrush is also reduced.

Description

Technical Field

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

[0002] A toothbrush is a cleaning product with a handle. Toothpaste is applied to the brush, and then the teeth are repeatedly brushed to maintain oral hygiene. Most current toothbrushes are made of a single piece of molded plastic with implanted bristles. The entire toothbrush is replaced when it's needed, which is wasteful of the usable handle. Furthermore, existing toothbrushes only function to clean teeth, making them unsuitable for widespread market adoption. Utility Model Content

[0003] One of the objectives of this utility model is achieved through the following technical solution:

[0004] A toothbrush with a replaceable brush head includes a handle, a connecting rod, and a brush head. The two ends of the connecting rod are fixedly connected to the handle and the brush head, respectively. The brush head has a storage groove, and the top of the brush head has a base plate. The top of the base plate is provided with bristles. Rectangular cavities are formed near the left and right sides of the base plate, and the bottom of each rectangular cavity has a rectangular slot communicating with the inner cavity of the storage groove. Limiting blocks are slidably connected to the inner cavities of both rectangular cavities, and movable blocks are fixedly connected to the right side of each limiting block. The bottoms of the two movable blocks respectively penetrate the inner cavities of adjacent rectangular slots and are fixedly connected to vertical rods. Each of the two movable plates is fixedly connected to a movable plate at its bottom, and a first pull rod is fixedly fixedly through the two movable plates laterally. A cylindrical cavity is formed on the pull rod, and a first through hole communicating with the inner cavity of the cylindrical cavity is formed at the bottom left side of the pull rod. A first through groove communicating with the inner cavity of the cylindrical cavity is formed on the outer wall of the pull rod, and the other end of the first pull rod passes through the first through hole and the inner cavity of the first through groove and is fixedly connected to a first arc-shaped cover plate. A first fixing ring is sleeved and fixed on the outer wall of the first pull rod, and a first spring is sleeved on the first pull rod. The two ends of the first spring are fixedly connected to the inner wall of the cylindrical cavity and the first fixing ring, respectively.

[0005] Furthermore, the bottom of the inner cavity of the storage slot is provided with a lifting plate, and the top of the lifting plate is fixedly connected to the left and right sides. A dental floss is provided between the two fixed rods. A square hole is opened on the lifting plate near the left side, and a T-shaped square rod slides through the inner cavity of the square hole.

[0006] Furthermore, a fixing hole is provided on the right side of the lifting plate, and a vertical plate is fixedly connected to the top right side of the lifting plate. A positioning hole of the same size as the fixing hole is provided near the top of the vertical plate. A second through hole communicating with the inner cavity of the cylindrical cavity is provided at the top left side of the connecting rod, and a second pull rod slides through the inner cavity of the second through hole. The longest end of the second pull rod is inserted into the inner cavity of the positioning hole. A second fixing ring is sleeved and fixed on the outer wall of the second pull rod, and a second spring is sleeved on the outer side of the second pull rod. The two ends of the second spring are fixedly connected to the inner wall of the cylindrical cavity and the second fixing ring, respectively. A second through groove adapted to the second pull rod is provided on the outer wall of the connecting rod, and the other end of the second pull rod passes through the inner cavity of the second through groove and is fixedly connected to a second arc-shaped cover plate.

[0007] Furthermore, a storage cavity is provided near the left end of the brush handle, and an access hole communicating with the inner cavity of the storage cavity is provided at the top left side of the brush handle. An annular cover plate is rotatably connected to the outer wall of the connecting rod, and the annular cover plate is fitted to the brush handle. A circular hole of the same size as the access hole is provided on the annular cover plate. A blind hole is provided on the left side of the annular cover plate, and a matching positioning rod is inserted into the inner cavity of the blind hole. The other end of the positioning rod is fixedly connected to the second arc-shaped cover plate.

[0008] Furthermore, a storage cavity is provided at the center of the right side of the brush handle, and an internal thread is provided on the right side of the inner cavity of the storage cavity. A threaded tube is connected to the inner cavity of the storage cavity through the internal thread, and a base is fixedly connected to the right end of the threaded tube, and a sealing ring is fixedly connected to the left end of the threaded tube.

[0009] Furthermore, the inner cavity of the base is provided with a cross-shaped knob.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1. By pushing the first arc-shaped cover plate to slide to the right, and driving the two moving plates to move horizontally to the right synchronously via the first pull rod, the moving plates move to the right via the vertical rod, thereby driving the left side of the limiting block to move to a position flush with the left side of the rectangular slot's inner cavity. Then, by pulling the base plate upward, the moving block and the limiting block can be disassembled from the rectangular slot and the inner cavity of the rectangular cavity, allowing the base plate with brush bristles to be removed and replaced. The storage cavity can be used to store spare brush heads. When replacement is needed, by turning the cross knob to rotate the base, the threaded tube can be unscrewed from the storage cavity, allowing the spare brush head to be taken out and replaced. This improves the convenience of brush head replacement and reduces the cost of using the toothbrush.

[0012] 2. The storage cavity allows for the storage of a certain number of toothpicks. When the second arc-shaped cover is pushed horizontally to the left and the positioning rod is disengaged from the blind hole cavity, the ring cover can be rotated to align the round hole with the access hole, allowing for the storage and retrieval of toothpicks. Furthermore, when the storage slot is opened, the lifting plate can be pulled vertically upwards to raise the dental floss above the brush head. Then, by inserting the longest end of the second pull rod into the fixing hole cavity and locking the lifting plate, the dental floss can be used stably. The inclusion of toothpicks and dental floss enhances the functionality of the toothbrush and facilitates its wider adoption. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this embodiment;

[0014] Figure 2 This is a cross-sectional structural diagram of this embodiment;

[0015] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle;

[0016] Figure 4 for Figure 2 Enlarged view of the structure at point B;

[0017] Figure 5 for Figure 2 Enlarged view of the structure at point C.

[0018] In the diagram: 1. Brush handle; 2. Connecting rod; 3. Brush head; 4. Base plate; 5. Brush bristles; 6. Storage cavity; 7. Base; 8. Threaded tube; 9. Sealing ring; 10. Cross knob; 11. Moving plate; 12. Vertical rod; 13. Movable block; 14. Rectangular slot; 15. Rectangular cavity; 16. Limiting block; 17. First pull rod; 18. First arc-shaped cover plate; 19. First fixing ring; 20. First spring; 1. Lifting plate; 22. Fixing rod; 23. Dental floss; 24. T-shaped square rod; 25. Fixing hole; 26. Vertical plate; 27. Positioning hole; 28. Second pull rod; 29. ​​Second arc-shaped cover plate; 30. Second fixing ring; 31. Second spring; 32. Cylindrical cavity; 33. Storage cavity; 34. Access hole; 35. Annular cover plate; 36. Round hole; 37. Blind hole; 38. Positioning rod; 39. Storage slot. Detailed Implementation

[0019] Please see Figures 1 to 5 The present invention provides the following technical solution:

[0020] A toothbrush with a replaceable brush head includes a handle 1, a connecting rod 2, and a brush head 3. The two ends of the connecting rod 2 are fixedly connected to the handle 1 and the brush head 3, respectively. The brush head 3 has a storage groove 39, and a base plate 4 is provided on the top of the brush head 3. Brush bristles 5 are provided on the top of the base plate 4. Rectangular cavities 15 are provided on the base plate 4 near both the left and right sides. A rectangular slot 14 communicating with the inner cavity of the storage groove 39 is provided at the bottom of each rectangular cavity 15. Limiting blocks 16 are slidably connected to the inner cavities of both rectangular cavities 15, and the right side of the limiting block 16... Two movable blocks 13 are fixedly connected. The bottoms of the two movable blocks 13 respectively penetrate the inner cavities of adjacent rectangular slots 14, and each is fixedly connected to a vertical rod 12. The bottom ends of the two vertical rods 12 are fixedly connected to movable plates 11, and the same first pull rod 17 is horizontally fixed through the two movable plates 11. A cylindrical cavity 32 is opened on the connecting rod 2, and a first through hole communicating with the inner cavity of the cylindrical cavity 32 is opened at the bottom left side of the connecting rod 2. A first through groove communicating with the inner cavity of the cylindrical cavity 32 is opened on the outer wall of the connecting rod 2, and the first... The other end of the pull rod 17 passes through the first through hole and the inner cavity of the first through groove, and is fixedly connected to the first arc-shaped cover plate 18. A first fixing ring 19 is sleeved and fixed on the outer wall of the first pull rod 17, and a first spring 20 is sleeved on the first pull rod 17. The two ends of the first spring 20 are fixedly connected to the inner wall of the cylindrical cavity 32 and the first fixing ring 19, respectively. When it is necessary to replace the bristles 5 on the brush head 3 and the base plate 4, the first arc-shaped cover plate 18 can be pushed to move horizontally to the right, and the two moving plates 11 can be moved horizontally to the right by the first pull rod 17. The movement causes the two vertical rods 12 to drive the two movable blocks 13 to slide horizontally to the right, and also causes the limiting block 16 to move horizontally to a position flush with the left side of the inner cavity of the rectangular slot 14. After pulling the base plate 4 upward, the base plate 4 and the bristles 5 can be removed from the brush head 3. Then, by turning the cross knob 10 and driving the base 7 to rotate, the threaded tube 8 and the sealing ring 9 can be unscrewed from the storage cavity 6. The spare base plate 4 with bristles 5 can then be taken out of the storage cavity 6 and installed on the brush head 3 for use.

[0021] The bottom of the inner cavity of the storage slot 39 is provided with a lifting plate 21, and the top of the lifting plate 21 is fixedly connected to the left and right sides. Dental floss 23 is provided between the two fixed rods 22. A square hole is opened on the lifting plate 21 near the left side, and a T-shaped square rod 24 slides through the inner cavity of the square hole. When the bottom plate 4 is removed and the storage slot 39 is opened, the lifting plate 21 can be pulled to move vertically upward under the limiting action of the T-shaped square rod 24, thereby driving the dental floss 23 to rise above the brush head 3. The dental floss 23 has the function of removing teeth, making it convenient for users to clean the toothbrush.

[0022] A fixing hole 25 is provided on the right side of the lifting plate 21, and a vertical plate 26 is fixedly connected to the top right side of the lifting plate 21. A positioning hole 27 of the same size as the fixing hole 25 is provided near the top of the vertical plate 26. A second through hole communicating with the inner cavity of the cylindrical cavity 32 is provided at the top left side of the connecting rod 2, and a second pull rod 28 slides through the inner cavity of the second through hole. The longest end of the second pull rod 28 is inserted into the inner cavity of the positioning hole 27. A second fixing ring 30 is sleeved and fixed on the outer wall of the second pull rod 28, and a second spring 31 is sleeved on the outer side of the second pull rod 28. The two ends of the second spring 31 are respectively connected to the inner cavity of the cylindrical cavity 32. The wall and the second fixing ring 30 are fixedly connected. The outer wall of the connecting rod 2 is provided with a second through groove that matches the second pull rod 28. The other end of the second pull rod 28 passes through the inner cavity of the second through groove and is fixedly connected with the second arc-shaped cover plate 29. By inserting the longest end of the second pull rod 28 into the inner cavity of the positioning hole 27, the lifting plate 21 can be locked to prevent the lifting plate 21 from shaking during brushing and affecting the brushing experience. In addition, when the dental floss 23 rises above the brush head 3, the longest end of the second pull rod 28 can be inserted into the inner cavity of the fixing hole 25 to lock and fix the dental floss 23, thereby improving the stability during use.

[0023] A storage cavity 33 is provided near the left end of the brush handle 1, and an access hole 34 communicating with the inner cavity of the storage cavity 33 is provided at the top left side of the brush handle 1. An annular cover plate 35 is rotatably connected to the outer wall of the connecting rod 2, and the annular cover plate 35 is fitted to the brush handle 1. A round hole 36 of the same size as the access hole 34 is provided on the annular cover plate 35. A blind hole 37 is provided on the left side of the annular cover plate 35, and a positioning rod 38 that matches it is inserted into the inner cavity of the blind hole 37. The other end of the positioning rod 38 is fixedly connected to the second arc-shaped cover plate 29. A certain number of toothpicks can be put into the storage cavity 33 through the round hole 36 and the access hole 34, so that they can be taken out when the user needs to pick their teeth.

[0024] A storage cavity 6 is provided at the center of the right side of the brush handle 1, and an internal thread is provided on the right side of the inner cavity of the storage cavity 6. The inner cavity of the storage cavity 6 is connected to a threaded tube 8 through the internal thread, and a base 7 is fixedly connected to the right end of the threaded tube 8. A cross knob 10 is provided in the inner cavity of the base 7. The base 7 can increase the contact area between the toothbrush and the table when it is placed upright, thereby improving the stability of the toothbrush when it is placed upright. At the same time, by turning the cross knob 10, the base 7 can be rotated, thereby improving the convenience of opening and closing the storage cavity 6. A sealing ring 9 is fixedly connected to the left end of the threaded tube 8. By storing the spare base plate 4 with bristles 5 into the inner cavity of the storage cavity 6, and then screwing the threaded tube 8 into the storage cavity 6, the base plate 4 can be limited, while ensuring that the bristles 5 are clean and tidy.

[0025] Working Principle: In use, this invention allows for the pre-storage of a spare base plate 4 with bristles 5 in the storage cavity 6. Simultaneously, a certain number of toothpicks can be stored in the storage cavity 33. When the bristles 5 need to be replaced, simply push the first arc-shaped cover plate 18 horizontally to the right. This, along with the first pull rod 17, causes the two moving plates 11 to move horizontally to the right simultaneously. This, in turn, causes the two vertical rods 12 to move the two movable blocks 13 horizontally to the right, and simultaneously causes the two limiting blocks 16 to move to the right. Once the left side of the limiting block 16 is aligned with the left side of the inner cavity of the rectangular slot 14, the base plate 4 can be pulled to remove the bristles 5 from the brush head 3. Then, by turning the cross knob 10 and rotating the base 7, the threaded tube 8 and sealing ring 9 can be unscrewed from the storage cavity 6. The base plate 4 stored in the storage cavity 6 can then be removed and installed on the brush head 3, thus enabling the toothbrush to be used continuously and reducing its operating costs. Furthermore, when the user needs to clean their teeth, they can use toothpicks or other cleaning agents. When using dental floss 23, if toothpicks are needed, push the second arc-shaped cover 29 horizontally to the left and disengage the positioning rod 38 from the inner cavity of the blind hole 37. Then, rotate the annular cover 35 to align the round hole 36 with the access hole 34, allowing the toothpick to be poured out of the storage cavity 33 for easy access. When dental floss 23 is needed, repeat the above operation and open the storage slot 39. Then, push the second arc-shaped cover 29 horizontally to the right and push the second pull rod 28 out from the inner cavity of the positioning hole 27. Next, pull the lifting plate 21 vertically upward and raise the dental floss 23 to the top of the brush head 3. After releasing the second arc-shaped cover 29, the longest end of the second pull rod 28 can be inserted into the inner cavity of the fixing hole 25 under the action of the second spring 31, thereby locking and fixing the lifting plate 21 and improving the stability of dental floss 23 during use. By increasing the functionality of the toothbrush, it is beneficial to further promote it in the market.

Claims

1. A toothbrush with a replaceable brush head, comprising a handle (1), a connecting rod (2), and a brush head (3), characterized in that: The two ends of the connecting rod (2) are fixedly connected to the brush handle (1) and the brush head (3) respectively. The brush head (3) is provided with a storage groove (39), and the top of the brush head (3) is provided with a base plate (4). The top of the base plate (4) is provided with bristles (5). The base plate (4) is provided with rectangular cavities (15) near the left and right sides. The bottom of the rectangular cavity (15) is provided with a rectangular slot (14) that communicates with the inner cavity of the storage groove (39). The inner cavities of the two rectangular cavities (15) are slidably connected with limit blocks (16), and the right side of the limit block (16) is fixedly connected with a movable block (13). The bottom of the two movable blocks (13) respectively penetrates the inner cavity of the adjacent rectangular slot (14) and is fixedly connected with a vertical rod (12). The bottom ends of the two vertical rods (12) are fixedly connected to... A movable plate (11) is connected to the first pull rod (17) which is fixed horizontally through the two movable plates (11). A cylindrical cavity (32) is opened on the connecting rod (2). A first through hole communicating with the inner cavity of the cylindrical cavity (32) is opened at the bottom left side of the connecting rod (2). A first through groove communicating with the inner cavity of the cylindrical cavity (32) is opened on the outer wall of the connecting rod (2). The other end of the first pull rod (17) passes through the first through hole and the inner cavity of the first through groove and is fixedly connected to a first arc-shaped cover plate (18). A first fixing ring (19) is sleeved and fixed on the outer wall of the first pull rod (17). A first spring (20) is sleeved on the first pull rod (17). The two ends of the first spring (20) are fixedly connected to the inner wall of the cylindrical cavity (32) and the first fixing ring (19) respectively.

2. The toothbrush with a replaceable brush head as described in claim 1, characterized in that: The storage slot (39) has a lifting plate (21) at the bottom of its inner cavity, and the top of the lifting plate (21) is fixedly connected to the left and right sides with fixing rods (22). A dental floss (23) is provided between the two fixing rods (22). A square hole is opened on the lifting plate (21) near the left side, and a T-shaped square rod (24) slides through the inner cavity of the square hole.

3. A toothbrush with a replaceable brush head as described in claim 2, characterized in that: A fixing hole (25) is provided on the right side of the lifting plate (21), and a vertical plate (26) is fixedly connected to the top right side of the lifting plate (21). A positioning hole (27) of the same size as the fixing hole (25) is provided near the top of the vertical plate (26). A second through hole communicating with the inner cavity of the cylindrical cavity (32) is provided at the top left side of the connecting rod (2), and a second pull rod (28) slides through the inner cavity of the second through hole. The longest end of the second pull rod (28) is inserted into the positioning hole (27). The inner cavity has a second fixing ring (30) sleeved and fixed on the outer wall of the second pull rod (28), and a second spring (31) is sleeved on the outer side of the second pull rod (28). The two ends of the second spring (31) are respectively fixedly connected to the inner wall of the cylindrical cavity (32) and the second fixing ring (30). The outer wall of the connecting rod (2) is provided with a second through groove that matches the second pull rod (28), and the other end of the second pull rod (28) passes through the inner cavity of the second through groove and is fixedly connected to a second arc-shaped cover plate (29).

4. A toothbrush with a replaceable brush head as described in claim 3, characterized in that: A storage cavity (33) is provided near the left end of the brush handle (1), and an access hole (34) communicating with the inner cavity of the storage cavity (33) is provided at the top left side of the brush handle (1). An annular cover plate (35) is rotatably connected to the outer wall of the connecting rod (2), and the annular cover plate (35) is fitted to the brush handle (1). A round hole (36) of the same size as the access hole (34) is provided on the annular cover plate (35). A blind hole (37) is provided on the left side of the annular cover plate (35), and a positioning rod (38) that is compatible with it is inserted into the inner cavity of the blind hole (37). The other end of the positioning rod (38) is fixedly connected to the second arc-shaped cover plate (29).

5. A toothbrush with a replaceable brush head as described in claim 1, characterized in that: A storage cavity (6) is provided at the center of the right side of the brush handle (1), and an internal thread is provided on the right side of the inner cavity of the storage cavity (6). The inner cavity of the storage cavity (6) is connected to a threaded tube (8) through the internal thread, and a base (7) is fixedly connected to the right end of the threaded tube (8). A sealing ring (9) is fixedly connected to the left end of the threaded tube (8).

6. A toothbrush with a replaceable brush head as described in claim 5, characterized in that: The base (7) has a cross knob (10) inside its cavity.

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