CN219206182U - Combined toothbrush - Google Patents

Abstract

The utility model relates to the technical field of toothbrushes, and particularly discloses a combined toothbrush which comprises a handle, a brush head and a connecting piece, wherein the handle and the brush head are detachably connected through the connecting piece; the connecting piece comprises a pressing part and a pressing buckle, the pressing part is fixedly connected to the bottom of the brush head, the pressing buckle is arranged at the top of the handle, and the pressing part is clamped with the pressing buckle; the pressing part comprises a pressing column and a pressing block which are sequentially arranged from top to bottom, and the size of the pressing block is larger than that of the pressing column; the pressing buckle comprises a shell, a top opening of the shell is provided with a spring, one end of the spring is connected with the bottom of the shell, the other end of the spring is connected with a buckle piece, one side of the buckle piece is connected with a pin, and the shell is provided with a guide groove corresponding to the pin. By adopting the technical scheme provided by the utility model, the technical problem of low brush head replacement efficiency caused by higher operation difficulty and longer time consumption when the brush head of the toothbrush is replaced in the prior art can be solved.

Description

Combined toothbrush

Technical Field

The utility model relates to the technical field of toothbrushes, in particular to a combined toothbrush.

Background

Toothbrushes are a daily cleaning product, which are handle-type brushes, and use a paste applied to the brushes, and then repeatedly brush each part of teeth to keep the mouth clean. Because the brush hair on the brush head is easy to be damaged in the long-term use process, and the toothbrush needs to be replaced regularly in order to ensure the sanitation of the toothbrush, the traditional toothbrush is an integral toothbrush, the handle and the brush head of the traditional toothbrush are integrally formed, and the whole toothbrush can be replaced only when the toothbrush is replaced. Obviously, the handle is difficult to damage compared with the brush head, and the handle is not in direct contact with the oral cavity, so that the handle is not required to keep high sanitation with the brush head, and therefore, certain resource waste can be caused by integrally replacing the toothbrush, and further, the environment is polluted additionally. In addition, when needing to go out to carry to the toothbrush, because traditional toothbrush integrated into one piece, length is longer, can occupy more space, leads to carrying inconvenience.

Based on this, the prior art (application number: 201220677205. X) discloses a combined toothbrush comprising a brush head, a handle, the key of which is: the handle is a hollow cavity, toothpaste is filled in the handle, a toothpaste outlet pipe is arranged at one end of the handle, the toothpaste outlet pipe is connected with the brush head through threads, one end of the brush head penetrates into the toothpaste outlet pipe or the toothpaste outlet pipe penetrates into one end of the brush head, and the handle is made of elastic transparent materials. According to the prior art, the brush head and the handle are detachably connected together through threads, so that the brush head can be independently replaced, and the problems that a traditional toothbrush needs to be integrally replaced and wastes materials are solved; can also be disassembled and stored when being carried out, thus solving the problems of large occupied space and inconvenient carrying of the traditional toothbrush.

However, the above prior art has the following problems:

1. the brush head and the handle adopt the mode of screw thread to realize dismantling and connect, because the handle can used repeatedly, the screw thread of seting up on it can experience the multiple friction of different brush head screw threads in the long-time in-process of using, leads to the handle screw thread can wearing and tearing seriously after using a period, and the connection compactness of handle screw thread and brush head screw thread drops this moment, leads to easy becoming flexible of threaded connection of handle and brush head, smooth silk, then the connection stability of handle and brush head can not be guaranteed, and the life of handle is shorter.

2. When the brush head is detached or connected, the brush head and the handle are required to be kept to coaxially rotate for a long time, so that the effective detachment or connection of the brush head can be ensured, and the operation difficulty is high; especially, when the brush head and the handle are connected, if the brush head and the handle are not kept coaxial, the brush head is easy to be connected askew, if the brush head is directly used, normal use can be affected, and if the brush head is detached and reconnected, the replacement efficiency of the brush head can be reduced.

Disclosure of Invention

The utility model aims to provide a combined toothbrush, which solves the technical problem of low brush head replacement efficiency caused by higher operation difficulty and longer time consumption when the brush head of the toothbrush is replaced in the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a combined toothbrush comprises a handle, a brush head and a connecting piece, wherein the handle and the brush head are detachably connected through the connecting piece; the connecting piece comprises a pressing part and a pressing buckle, the pressing part is fixedly connected to the bottom of the brush head, the pressing buckle is arranged at the top of the handle, and the pressing part is clamped with the pressing buckle; the pressing part comprises a pressing column and a pressing block which are sequentially arranged from top to bottom, and the size of the pressing block is larger than that of the pressing column; the pressing buckle comprises a shell, a top opening of the shell is provided with a spring, one end of the spring is connected with the bottom of the shell, the other end of the spring is connected with a buckle piece, the buckle piece comprises a clamping seat and a claw with elasticity, one side of the buckle piece is connected with a pin column, and a guide groove is formed in the position, corresponding to the pin column, of the shell.

The principle and the advantages of the scheme are as follows:

in actual application, the pressing part at the bottom of the brush head is used for pressing the pressing buckle at the top of the handle so as to realize the clamping connection between the brush head and the handle, and particularly, the pressing part stretches into the space between the clamping jaws to be contacted with the top of the clamping seat, and the whole clamping buckle piece is pressed inwards to the shell, so that the clamping end of the clamping jaw is folded at the joint of the pressing column and the pressing block under the limiting action of the inner wall of the shell and is propped against the side wall of the pressing column and the bottom of the pressing block, at the moment, the spring is compressed by the clamping buckle piece, and the pin column enters the guide groove to realize the positioning of the folding state of the clamping jaw; because the size of the pressing block is larger than that of the pressing column, the top of the pressing block is propped against the clamping end of the clamping jaw, and the clamping jaw can limit the pressing block, so that the clamping connection of the pressing part and the pressing buckle is realized, and the installation of the brush head is completed. If the brush head is to be disassembled and replaced, the brush head is only required to be pressed again, the pressing part presses the clamping piece again, at the moment, the pin column moves out of the guide groove, the furling state of the clamping claw is relieved, the spring stretches to drive the clamping piece to move towards the direction away from the shell, the clamping end of the clamping claw is opened after the clamping claw loses the limit of the inner wall of the shell, the top of the pressing block is not propped against the clamping end of the clamping claw, the bottom of the pressing block is not propped against the top of the clamping seat, the limit of the pressing part is relieved, the pressing part can be smoothly taken out of the pressing buckle, the old brush head is disassembled, and then the new brush head is clamped on the handle by adopting the connecting step.

1. The brush head is changed to this scheme's easy operation, during the installation, only need to press the buckle of pressing down that the pressing part of brush head bottom aimed at the handle top once, can realize the joint of brush head and handle, during the dismantlement, only need hold the brush head once again and press down to the direction that is close to the handle, can realize the dismantlement of brush head and handle, change the brush head and use time obviously shortens, can effectively improve the change efficiency of brush head.

2. When the brush head is installed and disassembled, the effective connection and disassembly of the brush head and the handle can be realized only by one pressing action, and the brush head and the handle are not required to be kept at the coaxial position for long-time operation, so that the operation burden of a user can be greatly reduced; and the brush head after connection can be directly used without readjustment, so that the brush head replacement efficiency can be further improved.

3. This scheme sets up the contact area of pressing buckle on the handle with the brush head great, compares in threaded connection, even if certain wearing and tearing have taken place in long-time use, also can not lead to the joint unstable, consequently can guarantee that the handle has longer life, can reach the purpose of reducing the wasting of resources more effectively.

Preferably, as an improvement, a protruding guide block is arranged on the inner wall of the shell, the guide block is positioned above the guide groove, a disassembly position is arranged on the side wall of the guide block, a clamping position is arranged in the guide groove, one side of the guide block forms a clamping route for connecting the disassembly position and the clamping position, and the other side of the guide block forms a disassembly route for connecting the clamping position and the disassembly position; when the pin moves from the dismounting position to the clamping position along the clamping route, the pressing part and the pressing buckle are in a clamping state, and when the pin moves from the clamping position to the dismounting position along the dismounting route, the pressing part and the pressing buckle are in a dismounting state.

According to the technical scheme, the guide block is arranged at the position, above the guide groove, of the inner wall of the shell, the guide block and the guide groove together form a clamping route and a disassembling route, when the brush head is installed, the pin column can move from the disassembling position to the clamping position along the clamping route so as to limit the pin column, at the moment, the clamping end of the clamping jaw is folded and is abutted with the top of the pressing block, so that the clamping of the pressing part and the pressing buckle is realized, and the installation of the brush head is completed; when the brush head is disassembled, the pin column can move from the clamping displacement to the disassembling position along the disassembling route, the limit of the pin column is released, and at the moment, the clamping end of the clamping jaw is opened and is not in butt joint with the top of the pressing block, so that the clamping joint of the pressing part and the pressing buckle is released, and the brush head is taken down. The joint route and dismantle the route in this scheme and guide the removal of round pin post at installation box dismantlement in-process, can guarantee to install the validity that the box was dismantled to the brush head through pressing to guarantee brush head change efficiency.

Preferably, as an improvement, the contact side of the claw and the pressing block is provided with an arc-shaped elastic piece, the arc-shaped elastic piece protrudes towards the direction close to the pressing column, one end of the arc-shaped elastic piece is fixedly connected with the claw, and the other end of the arc-shaped elastic piece abuts against the top of the pressing block.

Adopt this scheme, set up the arc shell fragment at jack catch and pressing block contact side, then with pressing the portion with press the buckle joint time, replace the jack catch with press the top butt of briquetting by the arc shell fragment, because the elasticity effect of arc shell fragment, can be with pressing the briquetting butt more inseparable to improve the joint firm degree of pressing the portion and pressing the buckle, with the connection stability of reinforcing brush head and handle.

Preferably, as an improvement, the top of the handle is provided with a mounting cavity, and the pressing buckle is arranged in the mounting cavity.

By adopting the scheme, the installation cavity is formed in the top of the handle, the pressing buckle is arranged in the installation cavity, the pressing part is positioned in the installation cavity after the pressing buckle is clamped, the installation cavity can protect the structure of the installation cavity, the clamping failure caused by the collision between the installation cavity and the outside is avoided, the connection stability of the brush head and the handle is ensured, the service life of the pressing part and the pressing buckle is prolonged, and the resource waste is reduced.

Preferably, as an improvement, a connecting frame is arranged at the bottom of the brush head, the bottom of the connecting frame is provided with an opening, and the pressing part is fixedly connected to the bottom of the connecting frame; the size of the bottom of the connecting frame is matched with the size of the top of the handle.

Adopt this scheme, set up bottom open-ended connecting frame in the bottom of brush head to with pressing the portion setting in the connecting frame bottom, and the size phase-match at connecting hole bottom and handle top, then with pressing the portion with press the buckle joint after, the connecting frame is sealed with the installation cavity together with the handle, make pressing the portion and press the buckle and be in sealed environment throughout in the use, avoid water and the foam pollution in the brushing teeth in-process to damage pressing the portion and press the buckle even, further protect pressing the portion and press the buckle, increase of service life.

Preferably, as an improvement, an extension ring is fixedly connected to the bottom of the connecting frame, the extension ring surrounds the pressing part, and the outer wall of the extension ring is slidably connected with the inner wall of the mounting cavity.

By adopting the scheme, the bottom of the connecting frame is provided with the extension ring which surrounds the periphery of the pressing part, and the outer wall of the extension ring is in sliding connection with the inner wall of the mounting cavity, so that the extension ring slides relative to the inner wall of the mounting cavity in the process of mounting the brush head by pressing the pressing buckle through the pressing part, a certain limiting effect can be achieved on the pressing direction of the pressing part, and the clamping accuracy of the pressing part and the pressing buckle is ensured; in the use process, the contact area between the brush head and the handle is increased due to the existence of the extension ring, so that the friction force between the brush head and the handle is increased, the connection stability between the brush head and the handle can be improved, and the use is convenient.

Preferably, as an improvement, the inner wall slope of installation cavity is provided with a plurality of limiting plates that have elasticity, and the bottom of limiting plate and the inner wall fixed connection of installation cavity, the distance between the top of limiting plate and the installation cavity inner wall and the thickness phase-match of extension ring.

By adopting the scheme, the inner wall slope in the installation cavity is provided with the elastic limiting plate, and the distance between the top end of the limiting plate and the inner wall of the installation cavity is matched with the thickness of the extension ring, so that the extension ring slides downwards relative to the inner wall of the installation cavity in the process of installing the brush head until the bottom end of the extension ring is clamped into a gap between the limiting plate and the inner wall of the installation cavity, the elastic limiting plate can apply a force away from the axis of the handle to the bottom end of the extension ring, namely the limiting plate can support the bottom end of the extension ring against the inner wall of the installation cavity, limiting of the extension ring is realized, the brush head is prevented from moving with the pressing part in the use process, and therefore the connection stability of the brush head and the handle is further improved.

Preferably, as an improvement, the extension ring is sleeved with a limiting sleeve, the limiting sleeve is positioned between the connecting frame and the handle, and the limiting sleeve has elasticity.

By adopting the scheme, the elastic limit sleeve is sleeved on the extension ring, and is positioned between the connecting frame and the handle, so that the friction force between the connecting frame and the handle can be increased by the limit sleeve in the use process of the toothbrush, and the relative displacement between the connecting frame and the handle can be reduced when the brush head is acted by external force, so that the connection stability of the brush head and the handle is improved.

Preferably, as an improvement, the outer wall of the pressing buckle is fixedly connected with a connecting rod, and two ends of the connecting rod are fixedly connected with the inner wall of the mounting cavity.

By adopting the scheme, the connecting rod is fixedly connected to the outer wall of the pressing buckle, the two ends of the connecting rod are fixedly connected with the inner wall of the installation cavity, the fixing connection of the pressing buckle in the installation cavity can be realized, and the pressing buckle is simple and reliable in structure and easy to manufacture.

Preferably, as a modification, the pressing block is in a shape of a circular truncated cone, and the diameter of the pressing block is gradually reduced from top to bottom.

Adopt this scheme, will press the piece to set up into round platform shape, and press the diameter from the top down of piece to reduce gradually, press the briquetting to the round platform shape promptly, then press down the buckle through pressing the portion extrusion, press the in-process that the piece stretched into between the jack catch, the joint end contact of the briquetting of pressing the round platform shape and jack catch of falling can play the guide effect to the removal of pressing the portion, improve the smoothness degree of pressing the portion and pressing the buckle joint to improve the convenience of operation, be favorable to improving the change efficiency of brush head.

Drawings

Fig. 1 is a schematic overall structure of embodiment 1 of the present utility model.

Fig. 2 is a schematic structural view of the connecting member in embodiment 1 of the present utility model.

Fig. 3 is a schematic view showing the structure of the bottom of the brush head in embodiment 1 of the present utility model.

Fig. 4 is a schematic structural diagram of a pressing buckle in embodiment 1 of the present utility model.

Fig. 5 is a schematic diagram of the movement trace of the pin in embodiment 1 of the present utility model.

Fig. 6 is a schematic structural view of the bottom end of the extension ring in embodiment 2 of the present utility model.

Detailed Description

The following is a further detailed description of the embodiments:

reference numerals in the drawings of the specification include: handle 1, installation cavity 11, brush head 2, connection frame 3, press portion 4, press post 41, press piece 42, press buckle 5, shell 51, guide slot 52, buckle piece 53, cassette 531, jack 532, pin 54, spring 55, guide block 56, extension ring 6, connecting rod 7, arc shell fragment 8, limiting plate 9, stop collar 10, dismantlement position A, joint position B, joint route x, dismantlement route y.

Example 1

A combination toothbrush as shown in figures 1 to 4: comprises a handle 1, a brush head 2 and a connecting piece, wherein the handle 1 and the brush head 2 are detachably connected through the connecting piece. The connecting piece includes presses the portion 4 and presses buckle 5, presses the bottom of portion 4 fixed connection at brush head 2, presses buckle 5 setting at the top of handle 1, presses the portion 4 and presses buckle 5 joint.

The bottom of the brush head 2 is coaxially and fixedly connected with a connecting frame 3 as shown in fig. 2, the bottom of the connecting frame 3 is provided with an opening, and the pressing part 4 is fixedly connected with the bottom of the connecting frame 3. The size of the bottom of the connecting frame 3 is matched with the size of the top of the handle 1, namely, the outer diameter of the bottom of the connecting frame 3 is the same as the outer diameter of the top of the handle 1. The pressing part 4 comprises a pressing column 41 and a pressing block 42 which are sequentially arranged from top to bottom, and the size of the pressing block 42 is larger than that of the pressing column 41; the pressing block 42 is in a truncated cone shape, and the diameter of the pressing block 42 gradually decreases from top to bottom; in this embodiment, the pressing post 41 and the pressing block 42 are coaxially disposed, and the pressing post 41 and the pressing block 42 are integrally formed to ensure the structural strength of the pressing portion 4.

As shown in fig. 2 and 4, the top of the handle 1 is provided with a mounting cavity 11, and the pressing buckle 5 is arranged in the mounting cavity 11. The pressing buckle 5 comprises a shell 51, a top opening of the shell 51 is provided with a spring 55 in the shell 51, the bottom end of the spring 55 is in butt joint with the bottom of the shell 51, a buckle piece 53 is sleeved at the top end of the spring 55, the buckle piece 53 comprises a clamping seat 531 and a clamping jaw 532 fixedly connected to the top of the clamping seat 531, and the clamping jaw 532 has elasticity; one side of the clamping piece 53 is connected with a pin 54, and a guide groove 52 is formed in the position of the shell 51 corresponding to the pin 54. In this embodiment, the pin 54 is integrally zigzag, the upper end of the pin 54 is rotationally connected with the side wall of the clamping seat 531, specifically, a connecting hole is formed on the side wall of the clamping seat 531, a torsion spring is arranged in the connecting hole, one end of the torsion spring is fixedly connected with the inner wall of the connecting hole, and the other end of the torsion spring is fixedly connected with the upper end of the pin 54; the lower end of the pin 54 is movable following the movement of the catch 53.

The inner wall of the housing 51 is integrally formed with an inwardly projecting guide 56, the guide 56 being shaped as shown in fig. 4 and 5, the guide 56 being located above the guide groove 52. Initially, the pin 54 is entirely inclined, with the lower end of the pin 54 being located above the left incline of the guide 56 near the top; when the catch 53 drives the pin 54 to move downward, the lower end of the pin 54 contacts the left inclined surface of the guide block 56, and then continues to move downward along the left inclined surface of the guide block 56.

As shown in fig. 5, the guide 56 is near the top and is at a disassembly position a, the guide 52 is concave upward and is at a clamping position B, a clamping route x for connecting the disassembly position a and the clamping position B is formed on the left side of the guide 56, and a disassembly route y for connecting the clamping position B and the disassembly position a is formed on the right side of the guide 56; when the lower end of the pin 54 moves from the dismounting position a to the clamping position B along the clamping path x, the pressing portion 4 and the pressing buckle 5 are in the clamped state, and when the lower end of the pin 54 moves from the clamping position B to the dismounting position a along the dismounting path y, the pressing portion 4 and the pressing buckle 5 are in the dismounted state.

The contact side of the clamping jaw 532 and the pressing block 42 is provided with an arc-shaped elastic sheet 8 as shown in fig. 2, the arc-shaped elastic sheet 8 protrudes towards the direction close to the pressing column 41, one end of the arc-shaped elastic sheet 8 is fixedly connected with the clamping jaw 53, and the other end of the arc-shaped elastic sheet 8 abuts against the top of the pressing block 42. The outer wall of the pressing buckle 5 is fixedly connected with a plurality of connecting rods 7, and two ends of each connecting rod 7 are fixedly connected with the inner wall of the installation cavity 11 so as to realize the fixed connection of the pressing buckle 5 in the installation cavity 11.

As shown in fig. 2 and 3, the bottom of the connection frame 3 is fixedly connected with an extension ring 6, the extension ring 6 surrounds the pressing portion 4, and the outer wall of the extension ring 6 is slidably connected with the inner wall of the installation cavity 11. The inner wall slope of installation cavity 11 is provided with a plurality of limiting plates 9 that have elasticity, and the bottom of limiting plate 9 and the inner wall fixed connection of installation cavity 11, the distance between the inner wall of the top of limiting plate 9 and installation cavity 11 and the thickness phase-match of extension ring 6, and the distance between the top of limiting plate 9 and the inner wall of installation cavity 11 can hold the bottom card of extension ring 6 promptly and go into. The extension ring 6 is sleeved with a limit sleeve 10, the limit sleeve 10 is positioned between the connecting frame 3 and the handle 1, and the limit sleeve 10 has elasticity. In this embodiment, the extension ring 6 and the stop collar 10 are made of rubber materials, so that the extension ring 6 can increase the friction between the extension ring and the inner wall of the installation cavity 11, and the stop collar 10 can increase the friction between the connection frame 3 and the handle 1, thereby improving the connection stability of the brush head 2 and the handle 1.

The specific implementation process is as follows:

1. when the combined toothbrush is used for a certain time or the bristles of the brush head 2 are obviously worn, the brush head 2 needs to be replaced, and the specific operation process is as follows:

(1) And (3) disassembly: the old brush head 2 is pressed downwards, the old brush head 2 presses the top of the clamping seat 531 of the buckle 5 through the pressing block 42 of the pressing part 4, so that the clamping seat 531 moves downwards, the lower end of the pin 54 is driven to move downwards and move out of the clamping position B, at the moment, the limit of the guide groove 52 to the lower end of the pin 54 is released, the pin 54 and the whole buckling piece 53 move upwards under the extension action of the spring 55, the lower end of the pin 54 moves to the disassembling position A along the disassembling route y, and the initial state is restored under the action of the reset spring; in the process of upward movement of the clamping piece 53, the clamping end of the clamping claw 532 gradually loses the limit of the shell 51 and opens, so that the arc-shaped elastic sheet 8 is not abutted with the pressing block 42, the top of the pressing block 42 is not limited, at this time, the clamping connection between the pressing part 4 and the pressing buckle 5 is released, and the pressing part 4 can be taken out from the installation cavity 11, so that the old brush head 2 is detached.

(2) And (2) mounting: aligning the pressing part 4 of the new brush head 2 with the pressing buckle 5 of the handle 1, pressing the new brush head 2 downwards, pressing the pressing block 42 of the pressing part 4 at the bottom of the new brush head 2, penetrating through the clamping end of the clamping claw 532 to contact with the top of the clamping seat 531, and pressing the top of the clamping seat 531 to enable the clamping seat 531 to move downwards, so that the lower end of the pin 54 is driven to move to the disassembling position A to contact with the left inclined surface of the guide block 56 and move to the clamping position B along the clamping route x, at the moment, the lower end of the pin 54 is limited by the guide groove 52, the pin 54 and the whole clamping piece 53 cannot move upwards any more, and the spring 55 is compressed; in the process of downward movement of the clamping seat 531, the clamping claw 532 is driven to move in the shell 51, so that the clamping end of the clamping claw 532 is folded under the limiting action of the shell 51 and is abutted with the side wall of the pressing column 41, at the moment, the bottom end of the arc-shaped elastic piece 8 is abutted with the top of the pressing block 42, the limiting of the pressing block 42 is realized, and therefore, the clamping connection of the pressing part 4 and the pressing buckle 5 is completed, namely, the installation of the new brush head 2 is completed.

2. When the combined toothbrush is required to be carried out, the brush head 2 can be disassembled firstly by adopting the step (1) so as to reduce the whole length of the toothbrush, thereby being convenient to store and carry; after carrying to the destination, the brush head 2 is installed by adopting the step (2) so as to be convenient to use.

Example 2

A combination toothbrush, as shown in fig. 6, which differs from embodiment 1 in that: the bottom of extension ring 6 is the inclined plane, and with the in-process of brush head 2 joint on handle 1, when inserting the space between limiting plate 9 and the installation cavity 11 inner wall, the inclined plane of extension ring 6 bottom can play the guide effect to the insertion of extension ring 6, and convenient extension ring 6 is spacing by limiting plate 9 joint fast.

The foregoing is merely exemplary of the present utility model, and specific technical solutions and/or features that are well known in the art have not been described in detail herein. It should be noted that, for those skilled in the art, several variations and modifications can be made without departing from the technical solution of the present utility model, and these should also be regarded as the protection scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the practical applicability of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims (10)

1. A combination toothbrush, characterized in that: comprises a handle, a brush head and a connecting piece, wherein the handle is detachably connected with the brush head through the connecting piece; the connecting piece comprises a pressing part and a pressing buckle, the pressing part is fixedly connected to the bottom of the brush head, the pressing buckle is arranged at the top of the handle, and the pressing part is clamped with the pressing buckle; the pressing part comprises a pressing column and a pressing block which are sequentially arranged from top to bottom, and the size of the pressing block is larger than that of the pressing column; the pressing buckle comprises a shell, a top opening of the shell is provided with a spring, one end of the spring is connected with the bottom of the shell, the other end of the spring is connected with a buckle piece, the buckle piece comprises a clamping seat and a claw with elasticity, one side of the buckle piece is connected with a pin column, and a guide groove is formed in the position, corresponding to the pin column, of the shell.

2. A combination toothbrush as claimed in claim 1, wherein: the inner wall of the shell is provided with a protruding guide block, the guide block is positioned above the guide groove, the side wall of the guide block is provided with a disassembly position, the guide groove is internally provided with a clamping position, one side of the guide block forms a clamping route for connecting the disassembly position and the clamping position, and the other side of the guide block forms a disassembly route for connecting the clamping position and the disassembly position; when the pin moves from the dismounting position to the clamping position along the clamping route, the pressing part and the pressing buckle are in a clamping state, and when the pin moves from the clamping position to the dismounting position along the dismounting route, the pressing part and the pressing buckle are in a dismounting state.

3. A combination toothbrush as claimed in claim 1, wherein: the claw is equipped with the arc shell fragment with pressing block contact side, and the arc shell fragment is protruding to the direction that is close to the press post, and the one end and the claw fixed connection of arc shell fragment, the other end and the pressing block top of arc shell fragment offset.

4. A combination toothbrush as claimed in claim 1, wherein: the top of handle has seted up the installation cavity, presses the buckle setting in the installation cavity.

5. A combination toothbrush as recited in claim 4, wherein: the bottom of the brush head is provided with a connecting frame, the bottom of the connecting frame is provided with an opening, and the pressing part is fixedly connected to the bottom of the connecting frame; the size of the bottom of the connecting frame is matched with the size of the top of the handle.

6. A combination toothbrush as recited in claim 5, wherein: the bottom fixedly connected with of connecting frame extends the ring, extends the ring around pressing part, extends the outer wall of ring and the inner wall sliding connection of installation cavity.

7. A combination toothbrush as recited in claim 6, wherein: the inner wall slope of installation cavity is provided with a plurality of limiting plates that have elasticity, and the bottom of limiting plate and the inner wall fixed connection of installation cavity, the distance between the top of limiting plate and the installation cavity inner wall and the thickness phase-match of extension ring.

8. A combination toothbrush as recited in claim 6, wherein: the extension ring is sleeved with a limiting sleeve, the limiting sleeve is positioned between the connecting frame and the handle, and the limiting sleeve has elasticity.

9. A combination toothbrush as recited in claim 4, wherein: the outer wall of the pressing buckle is fixedly connected with a connecting rod, and two ends of the connecting rod are fixedly connected with the inner wall of the mounting cavity.

10. A combination toothbrush according to any one of claims 1 to 9 wherein: the pressing block is in a round table shape, and the diameter of the pressing block is gradually reduced from top to bottom.

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