Electric toothbrush head

Abstract

The utility model relates to the technical field of electric toothbrushes, in particular to an electric toothbrush head, which comprises a connecting cavity, a connecting part, bristles and a toothbrush head main body, the connecting cavity is formed by integral injection molding, the connecting part is arranged in the toothbrush head main body, the toothbrush head main body and the connecting part are formed by integral injection molding, and the connecting cavity is connected with the toothbrush head main body in a matched manner through the connecting part; brush hair mounting holes are formed in the head part of the toothbrush head main body, and the brush hair is mounted in the brush hair mounting holes; and the side wall of the connecting cavity is encircled to form a first inserting channel. According to the electric toothbrush head provided by the utility model, the connection between the toothbrush head and the connecting cavity is effectively realized and is more stable, so that the high-frequency mechanical vibration of the driving shaft of the electric toothbrush is better transmitted to the toothbrush head main body through the energy of the connecting cavity, the transmission efficiency is improved, and the vibration effect of the toothbrush head main body is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric toothbrush technical field, especially a kind of electric toothbrush head. BACKGROUND

[0002] In daily life, the application of automatic cleaning nursing device is more and more widely, and electric toothbrush can clean teeth more conveniently and effectively. Electric toothbrush usually uses high-speed vibration to clean teeth, has different vibration modes and intensity, and the vibration modes mainly used by electric toothbrush on the market include rotary vibration, acoustic vibration and ultrasonic vibration.

[0003] Most electric toothbrushes can be divided into replaceable toothbrush heads and drive shafts, and most existing electric toothbrushes need to connect the toothbrush head and the drive shaft through an additional connecting piece to transmit the mechanical movement of the drive shaft to the toothbrush head to realize high-frequency vibration of the toothbrush head, so as to clean teeth. However, the existing connection method on the market not only has complex installation, but also the connection between the drive shaft and the toothbrush head is not tight enough, and when the electric toothbrush vibrates at high frequency, the process of transmitting high-frequency vibration from the mechanical movement of the drive shaft to the toothbrush head will produce a lot of noise. SUMMARY

[0004] In order to overcome the shortcomings of the prior art, the utility model provides an electric toothbrush head, to solve the technical problems of complex installation of existing electric toothbrush head and insufficient connection between drive rod and toothbrush head.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: an electric toothbrush head, comprising a connecting cavity, a connecting part, bristles and a toothbrush head main body; the connecting cavity is formed by one-piece injection molding, the connecting part is arranged in the toothbrush head main body, the toothbrush head main body and the connecting part are formed by one-piece injection molding, and the connecting cavity is connected with the toothbrush head main body through the connecting part; the head of the toothbrush head main body is provided with a bristle mounting hole, and the bristles are mounted in the bristle mounting hole; the side wall of the connecting cavity surrounds to form a first plug-in channel.

[0006] Preferably, the electric toothbrush head further comprises a first glue body and a second glue body, the connecting cavity is formed by injection molding and solidification of the first glue body, the toothbrush head main body is formed by injection molding and solidification of the second glue body, at least a part of the second glue body is attached to the connecting cavity to form an attached part, and the attached part forms the connecting part after solidification of the toothbrush head main body.

[0007] Preferably, the toothbrush head body has a first accommodating cavity formed by a side wall of the toothbrush head body, the connecting portion is arranged on an inner surface of the first accommodating cavity, the connecting cavity is located in the first accommodating cavity and connected to the inner surface of the first accommodating cavity through the connecting portion, one end of the first accommodating cavity is provided with a first mounting portion, the first mounting portion is provided with a first mounting opening, the first mounting opening is in communication with the first accommodating cavity, and the first mounting opening is in communication with the first plug-in channel.

[0008] Preferably, the first plug-in channel is a first plug-in channel with a front narrow and a rear wide, the first plug-in channel comprises a first plug-in portion at a front end and a second plug-in portion at a rear end, and an inner diameter of the second plug-in portion is greater than an inner diameter of the first plug-in portion.

[0009] Preferably, the first plug-in channel further comprises a third plug-in portion located between the first plug-in portion and the second plug-in portion, an inner diameter of the third plug-in portion is greater than the inner diameter of the first plug-in portion, and the inner diameter of the third plug-in portion is less than the inner diameter of the second plug-in portion.

[0010] Preferably, the connecting cavity has an elastic wall, an inner surface of the elastic wall has a first locking protrusion arranged on an inner surface of the first plug-in portion, the inner surface of the elastic wall further has a first limiting protrusion and a second limiting protrusion, a front end of the first limiting protrusion and a front end of the second limiting protrusion are located in the first plug-in portion, a first avoiding groove is arranged between the first limiting protrusion and the second limiting protrusion, and the first locking protrusion, the first limiting protrusion and the second limiting protrusion are used to clamp a driving shaft of the electric toothbrush in the first plug-in channel.

[0011] Preferably, one end of the connecting cavity is provided with an avoiding hole position, the other end is provided with a ring-shaped positioning protrusion, the avoiding hole position is in communication with the first plug-in channel, the first plug-in portion is located between the avoiding hole position and the third plug-in portion, the toothbrush head body has a ring-shaped positioning groove, and the positioning protrusion is connected with the positioning groove.

[0012] Preferably, the toothbrush head body further comprises a metal sleeve ring, the metal sleeve ring has a second mounting opening, the second mounting opening is in communication with the first plug-in channel, an inner wall of the first mounting portion is provided with a first mounting groove, and the metal sleeve ring is plugged into the first mounting groove.

[0013] Preferably, the electric toothbrush head further comprises a decorative ring, the decorative ring has a sleeving opening, an outer wall of the first mounting part is provided with a second mounting groove, the decorative ring is sleeved on the second mounting groove through the sleeving opening, and the decorative ring tightly presses the first mounting part on the metal sleeve ring.

[0014] Preferably, an outer side wall of the toothbrush head body is provided with a first anti-skid protrusion and a first anti-skid groove, the first anti-skid protrusion is arranged in a circumferential direction around the outer side wall of the toothbrush head body, and the first anti-skid groove is arranged in a longitudinal direction along the outer side wall of the toothbrush head body.

[0015] By implementing the above technical scheme, the electric toothbrush head has the following technical effects: the electric toothbrush head makes the driving shaft of the electric toothbrush be inserted and mounted in the first insertion mounting channel, so that the driving shaft of the electric toothbrush is tightly connected with the toothbrush head body through the connecting cavity, is more stable and has stronger integrity compared with other connection modes, high-frequency mechanical vibration of the driving shaft of the electric toothbrush can be effectively transmitted to the toothbrush head body through the connecting cavity, not only can drive the bristles on the toothbrush head body to vibrate and swing at high frequency, so as to clean the teeth and whiten the teeth, but also can reduce noise generated in the process of transmitting high-frequency vibration to the toothbrush head body by mechanical movement of the driving shaft. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is an overall structural schematic view when the driving shaft is inserted into the electric toothbrush head connecting cavity provided in the embodiment of the utility model;

[0017] Figure 2 It is a structural schematic view of the electric toothbrush head provided in the embodiment of the utility model;

[0018] Figure 3 It is an explosion view of the electric toothbrush head provided in the embodiment of the utility model;

[0019] Figure 4 It is a sectional view when the driving shaft is inserted into the electric toothbrush head connecting cavity provided in the embodiment of the utility model, the sectional view being along the toothbrush head body and the connecting cavity;

[0020] Figure 5 It is an enlarged view of A in Figure 4

[0021] Figure 6 It is a sectional view when the driving shaft is inserted into the electric toothbrush head connecting cavity provided in the embodiment of the utility model, the sectional view being along the toothbrush head body and the connecting cavity;

[0022] Figure 7 It is an enlarged view of B in Figure 6

[0023] BRIEF DESCRIPTION OF DRAWINGS​​

[0024] 1, connecting cavity; 2, connecting part; 3, bristles; 4, toothbrush head main body; 5, first glue; 6, second glue; 61, attachment part; 11, first plug-in channel; 12, elastic wall; 13, avoidance hole position; 14, positioning protrusion; 15, positioning groove; 16, metal sleeve ring; 17, decorative ring; 41, first containing cavity; 42, first mounting opening; 43, first mounting portion; 44, bristle mounting hole; 45, first anti-skid protrusion; 46, first anti-skid groove; 111, first plug-in portion; 112, second plug-in portion; 113, third plug-in portion; 121, first locking protrusion; 122, first limiting protrusion; 123, second limiting protrusion; 124, first avoidance groove; 161, second mounting opening; 162, first connecting side wall; 163, second connecting side wall; 171, sleeving opening; 431, first mounting groove; 432, second mounting groove; 1111, drive shaft; DETAILED DESCRIPTION

[0025] In order to better understand the technical scheme of the utility model, the embodiments provided by the utility model are described in detail below with reference to the drawings.

[0026] Referring to Figures 1-3 The utility model embodiment provides a kind of electric toothbrush head, including connecting cavity 1, connecting part 2, bristle 3 and toothbrush head main body 4;Connecting cavity 1 is formed by integral injection molding, connecting part 2 is arranged in toothbrush head main body 4, toothbrush head main body 4 and connecting part 2 are formed by integral injection molding, when injection molding toothbrush head main body 4, at least part of toothbrush head main body 4 is attached to connecting cavity 1 to form connecting part 2, connecting cavity 1 is connected with toothbrush head by connecting part 2 cooperation;The head of toothbrush head main body 4 is provided with bristle mounting hole 44, and bristle 3 is installed in bristle mounting hole 44;Connecting cavity 1 side wall surrounds and forms first plug-in channel 11.

[0027] Therefore, the electric toothbrush head provided by the utility model makes the drive shaft 1111 of electric toothbrush and first plug-in channel 11 are inserted and used, so that the drive shaft 1111 of electric toothbrush can be tightly connected with toothbrush head main body 4 through connecting cavity 1, which is more stable and has stronger integrity compared with other connection methods, and high-frequency mechanical vibration of the drive shaft 1111 of electric toothbrush can be effectively transmitted to toothbrush head main body 4 through connecting cavity 1, so that the bristles 3 on toothbrush head main body 4 can be driven to vibrate and swing at high frequency, thereby achieving the effect of cleaning and whitening teeth, and the noise generated in the process of transmitting high-frequency vibration to toothbrush head main body 4 by mechanical movement of the drive shaft can be reduced.

[0028] On the basis of the above-mentioned embodiments, in other embodiments, further, the electric toothbrush head further comprises a first glue body 5 and a second glue body 6, the connecting cavity 1 is formed by injection molding and solidification of the first glue body 5, the toothbrush head body 4 is formed by injection molding and solidification of the second glue body 6, at least a part of the second glue body 6 is attached to the connecting cavity 1 to form an attached part 61, the attached part 61 forms the connecting part 2 after solidification of the toothbrush head body 4, through the above-mentioned structure, the toothbrush head body 4 and the connecting cavity 1 are effectively formed, and the toothbrush head body 4 is connected with the connecting cavity 1 into an integral whole through the plastic packaging form while the toothbrush head body 4 is formed, so that the connection between the connecting cavity 1 and the toothbrush head is more close.

[0029] Specifically, the melting point of the connecting cavity 1 is greater than the melting point of the toothbrush head body 4 and the connecting part 2, that is, the melting point of the first glue body 5 is greater than the melting point of the second glue body 6, by using the characteristic that the melting point of the connecting cavity 1 is greater than the melting point of the toothbrush head body 4, so that the connecting cavity 1 will not be melted when the toothbrush head body 4 is formed, so as to connect the toothbrush head body 4 with the connecting cavity 1 into an integral whole through the plastic packaging form while the toothbrush head body 4 is formed.

[0030] Specifically, the connecting cavity 1 is a POM plastic connecting cavity 1, the toothbrush head body 4 is a PP plastic toothbrush head body 4, and the connecting part 2 is a PP plastic connecting part 2, that is, the first glue body 5 is a first POM plastic body, and the second glue body 6 is a second PP plastic body. Further, the melting point of the connecting cavity 1 and the first glue body 5 is greater than 165 degrees Celsius; the melting point of the toothbrush head body 4, the connecting part 2 and the second glue body 6 is less than or equal to 165 degrees Celsius. Still further, the melting point of the connecting cavity 1 and the first glue body 5 is 175 degrees Celsius; the melting point of the toothbrush head body 4, the connecting part 2 and the second glue body 6 is 165 degrees Celsius.

[0031] On the basis of the above-mentioned embodiments, in other embodiments, further, the toothbrush head body 4 has a first containing cavity 41, the first containing cavity 41 is formed by the side wall of the toothbrush head body 4, the connecting part 2 is arranged on the inner surface of the first containing cavity 41, the connecting cavity 1 is located in the first containing cavity 41 and connected to the inner surface of the first containing cavity 41 through the connecting part 2, one end of the first containing cavity 41 is provided with a first mounting part 43, the first mounting part 43 is provided with a first mounting opening 42, the first mounting opening 42 is communicated with the first containing cavity 41, and the first mounting opening 42 is communicated with the first plug-in channel 11.

[0032] On the basis of the above-mentioned embodiments, in other embodiments, further, referring to Figures 4-7The first inserting channel 11 is a first inserting channel 11 with a front narrow and a rear wide, and the first inserting channel 11 comprises a first inserting part 111 at the front end and a second inserting part 112 at the rear end, and the inner diameter of the second inserting part 112 is larger than that of the first inserting part 111.

[0033] On the basis of the above embodiments, in other embodiments, further, the first inserting channel 11 further comprises a third inserting part 113, the third inserting part 113 is located between the first inserting part 111 and the second inserting part 112, the inner diameter of the third inserting part 113 is larger than that of the first inserting part 111, and the inner diameter of the third inserting part 113 is smaller than that of the second inserting part 112.

[0034] Through the above structure, the electric toothbrush head of the utility model can be tightly resisted with the front part, the middle part and the rear part of the electric toothbrush driving shaft 1111 through the setting of the first inserting part 111, the second inserting part 112 and the third inserting part 113, the high-frequency mechanical vibration energy of the electric toothbrush driving shaft 1111 can be effectively transmitted to the toothbrush head main body 4, the bristles 3 on the toothbrush head main body 4 are driven to produce high-frequency vibration swing, and the effect of cleaning the teeth and whitening the teeth is achieved.

[0035] On the basis of the above embodiments, in other embodiments, further, the connecting cavity 1 has an elastic wall 12, the inner surface of the elastic wall 12 has a first locking protrusion 121, the first locking protrusion 121 is arranged on the inner surface of the first inserting part 111, the inner surface of the elastic wall 12 further has a first limiting protrusion 122 and a second limiting protrusion 123, the front end of the first limiting protrusion 122 and the front end of the second limiting protrusion 123 are located in the first inserting part 111, a first avoiding groove 124 is arranged between the first limiting protrusion 122 and the second limiting protrusion 123, and the first locking protrusion 121, the first limiting protrusion 122 and the second limiting protrusion 123 are used for clamping the driving shaft 1111 of the electric toothbrush in the first inserting channel 11.

[0036] Through the above structure, when the driving shaft 1111 is inserted into the first plug-in channel 11, the driving shaft 1111 extrudes the elastic wall 12. Due to the arrangement of the first avoiding groove 124 and the avoiding hole 13, the elastic wall 12 can be expanded by the driving shaft 1111 and elastically deformed. When the elastic wall 12 of the connecting cavity 1 elastically deforms, the elastic restoring force provided by the elastic wall 12 extrudes and clamps the electric toothbrush driving shaft 1111 inserted into the first plug-in channel 11 in the first plug-in channel 11. The driving shaft 1111 of the electric toothbrush can be tightly connected with the toothbrush head body 4 through the connecting cavity 1, so that the first plug-in channel 11 of the connecting cavity 1 and the driving shaft 1111 are tightly contacted to achieve the ideal tightness, and the high-frequency mechanical vibration energy of the electric toothbrush driving shaft 1111 is effectively transmitted to the toothbrush head body 4. Not only can the high-frequency vibration be generated on the bristles 3 of the toothbrush head body 4, but also the noise generated in the process of transmitting the high-frequency vibration from the driving shaft 1111 to the toothbrush head body 4 can be reduced.

[0037] On the basis of the above embodiments, in other embodiments, further, the connecting cavity 1 is provided with an avoiding hole 13 at one end and a ring-shaped positioning protrusion 14 at the other end. The avoiding hole 13 is in communication with the first plug-in channel 11, and the first plug-in portion 111 is located between the avoiding hole 13 and the third plug-in portion 113. The toothbrush head body 4 has a ring-shaped positioning groove 15. The positioning protrusion 14 is connected with the positioning groove 15, so that the toothbrush head body 4 can be accurately connected with the connecting cavity 1 during injection molding.

[0038] On the basis of the above embodiments, in other embodiments, further, the toothbrush head body 4 further comprises a metal sleeve ring 16. The metal sleeve ring 16 has a second mounting opening 161. The second mounting opening 161 is in communication with the first plug-in channel 11. The inner wall of the first mounting portion 43 is provided with a first mounting groove 431. The metal sleeve ring 16 is inserted into the first mounting groove 431.

[0039] Specifically, the metal sleeve ring 16 has a first connecting side wall 162 and a second connecting side wall 163. The first connecting side wall 162 is connected with the second connecting side wall 163. The first connecting side wall 162 and the second connecting side wall 163 are arranged at a right angle, an obtuse angle or an acute angle. The first connecting side wall 162 is inserted into the first mounting groove 431. The second connecting side wall 163 surrounds the second mounting opening 161.

[0040] On the basis of the above embodiments, in other embodiments, further, the electric toothbrush head further comprises a decorative ring 17. The decorative ring 17 has a sleeving opening 171. The outer wall of the first mounting portion 43 is provided with a second mounting groove 432. The decorative ring 17 is sleeved on the second mounting groove 432 through the sleeving opening 171, and the decorative ring 17 presses the first mounting portion 43 against the metal sleeve ring 16.

[0041] On the basis of the above embodiments, in other embodiments, further, the outer side wall of the toothbrush head body 4 is provided with a first anti-skid protrusion 45 and a first anti-skid groove 46, the first anti-skid protrusion 45 is arranged circumferentially around the outer side wall of the toothbrush head body 4; the first anti-skid groove 46 is arranged longitudinally along the outer side wall of the toothbrush head body 4, and the first anti-skid groove 46 is in the shape of a cone.

[0042] Through the above structure, the decorative ring 17 can make the appearance of the toothbrush head more beautiful, and because the decorative ring 17 presses the first mounting portion 43 tightly against the metal sleeve ring 16, the first mounting portion 43 and the first mounting opening 42 can be effectively prevented from deforming, and the strength of the toothbrush head body 4 is improved. The drive shaft 1111 of the electric toothbrush head passes through the first mounting opening 42 and the second mounting opening 161 in sequence and is inserted into the first insertion passage 11, and the elastic wall 12 presses the drive shaft 1111 tightly in the first insertion passage 11, so that the first insertion passage 11 of the connecting cavity 1 and the drive shaft 1111 are tightly pressed against each other to achieve the desired tightness, and the high-frequency mechanical vibration energy of the electric toothbrush drive shaft 1111 is effectively transmitted to the toothbrush head body 4. Not only can the toothbrush head body 4 be driven to make the bristles 3 vibrate and sway at high frequency, thereby achieving the effect of cleaning and whitening teeth, but also the noise generated in the process of transmitting high-frequency vibration from the drive shaft 1111 to the toothbrush head body 4 can be reduced.

[0043] The above has introduced in detail the electric toothbrush head provided by the embodiments of the present application. For those skilled in the art, according to the idea of the embodiments of the present application, the specific implementation and application range will be changed, and the above description should not be understood as a limitation of the present application.

Claims

1. An electric toothbrush head, characterized by: The electric toothbrush head comprises a connecting cavity (1), a connecting part (2), a bristle (3) and a toothbrush head body (4); The connecting cavity (1) is formed by one-piece injection molding, the connecting part (2) is arranged in the toothbrush head body (4), the toothbrush head body (4) and the connecting part (2) are formed by one-piece injection molding, and the connecting cavity (1) is connected with the toothbrush head body in cooperation through the connecting part (2). The head of the toothbrush head body (4) is provided with a bristle mounting hole (44), and the bristle (3) is mounted in the bristle mounting hole (44); and the side wall of the connecting cavity (1) surrounds to form a first plug-in channel (11). The toothbrush head body (4) has a first containing cavity (41) therein, the first containing cavity (41) is surrounded by the side wall of the toothbrush head body (4), the connecting part (2) is arranged on the inner surface of the first containing cavity (41), the connecting cavity (1) is located in the first containing cavity (41) and connected to the inner surface of the first containing cavity (41) through the connecting part (2), one end of the first containing cavity (41) is provided with a first mounting part (43), the first mounting part (43) is provided with a first mounting opening (42), the first mounting opening (42) is in communication with the first containing cavity (41), and the first mounting opening (42) is in communication with the first plug-in channel (11). The first plug-in channel (11) is a first plug-in channel (11) with a front narrow and a rear wide, which comprises a first plug-in part (111) at the front end and a second plug-in part (112) at the rear end, and the inner diameter of the second plug-in part (112) is greater than that of the first plug-in part (111). The first plug-in channel (11) further comprises a third plug-in part (113) located between the first plug-in part (111) and the second plug-in part (112), the inner diameter of the third plug-in part (113) is greater than that of the first plug-in part (111), and the inner diameter of the third plug-in part (113) is less than that of the second plug-in part (112).

2. The electric toothbrush head of claim 1, wherein: The electric toothbrush head further comprises a first glue body (5) and a second glue body (6), the connecting cavity (1) is formed by injection molding and solidification of the first glue body (5), the toothbrush head body (4) is formed by injection molding and solidification of the second glue body (6), at least a part of the second glue body (6) is attached to the connecting cavity (1) to form an attachment part (61), and the attachment part (61) forms the connecting part (2) after solidification of the toothbrush head body (4).

3. The electrically powered toothbrush head of claim 1, wherein: The connecting cavity (1) has an elastic wall (12), an inner surface of the elastic wall (12) is provided with a first locking protrusion (121), the first locking protrusion (121) is arranged on an inner surface of the first plug-in part (111), the inner surface of the elastic wall (12) is further provided with a first limiting protrusion (122) and a second limiting protrusion (123), a front end of the first limiting protrusion (122) and a front end of the second limiting protrusion (123) are located in the first plug-in part (111), a first avoiding groove (124) is arranged between the first limiting protrusion (122) and the second limiting protrusion (123), the first locking protrusion (121), the first limiting protrusion (122) and the second limiting protrusion (123) are used to clamp the driving shaft (1111) of the electric toothbrush in the first plug-in channel (11).

4. The electrically powered toothbrush head of claim 3, wherein: The connecting cavity (1) is provided with an avoiding hole (13) at one end and a ring-shaped positioning protrusion (14) at the other end, the avoiding hole (13) is communicated with the first plug-in channel (11), and the first plug-in part (111) is located between the avoiding hole (13) and the third plug-in part (113), the toothbrush head body (4) has a ring-shaped positioning groove (15), and the positioning protrusion (14) is connected with the positioning groove (15).

5. The electrically powered toothbrush head of claim 4, wherein: The toothbrush head body (4) further comprises a metal sleeve ring (16), the metal sleeve ring (16) has a second mounting opening (161), the second mounting opening (161) is communicated with the first plug-in channel (11), an inner wall of the first mounting part (43) is provided with a first mounting groove (431), and the metal sleeve ring (16) is plug-in mounted in the first mounting groove (431).

6. The electrically powered toothbrush head of claim 5, wherein: The electric toothbrush head further comprises a decorative ring (17), the decorative ring (17) has a sleeving opening (171), an outer wall of the first mounting part (43) is provided with a second mounting groove (432), the decorative ring (17) is sleeved on the second mounting groove (432) through the sleeving opening (171), and the decorative ring (17) presses the first mounting part (43) against the metal sleeve ring (16).

7. The electrically powered toothbrush head of claim 6, wherein: An outer side wall of the toothbrush head body (4) is provided with a first anti-skid protrusion (45) and a first anti-skid groove (46), the first anti-skid protrusion (45) is arranged in a circumferential direction around the outer side wall of the toothbrush head body (4), and the first anti-skid groove (46) is arranged in a longitudinal direction along the outer side wall of the toothbrush head body (4).

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