Key structure and handheld dental instrument handle

Abstract

The utility model belongs to the technical field of dental instruments, and relates to a key structure which comprises at least one key and flexible glue, the key is installed in an installation opening of a shell, the position of the key corresponds to a switch used for controlling on-off of a circuit, and each key is provided with at least one pressing part used for pressing the switch; the soft rubber is arranged between the key and the switch, the soft rubber is provided with an elastic part corresponding to the pressing part, and the elastic part protrudes towards the direction of the key and abuts against the key or is connected with the key; according to the technical scheme provided by the invention, the elastic part has a certain resilience force, so that the feedback experience of the use hand feeling of the key is better, and meanwhile, the flexible glue and the shell as well as the elastic part and the key are tightly connected, so that water is effectively prevented from entering the shell from a gap between the key and the shell, and the service life of the key is prolonged. The waterproof sealing performance is improved, and the switch and the control mainboard are prevented from being damaged by short circuit and static electricity. The utility model further relates to a handheld dental instrument handle comprising the key structure.

Description

Technical Field

[0001] The present application relates to the technical field of dental instruments, and more specifically, to a button structure and a handheld dental instrument handle. Background Art

[0002] The handle of a handheld dental instrument is a tool used by dentists during diagnosis and treatment, and is usually used to operate dental instruments such as irrigators, drills, and dental scalers. The handle of a handheld dental instrument needs to be inserted into the oral cavity and needs to be disinfected after use. However, the button part of the handle of a handheld dental instrument in the prior art has a poor pressing rebound feel and does not meet people's needs. Utility Model Content

[0003] The technical problem to be solved by the present application is that the key parts in the prior art have a poor pressing rebound feel.

[0004] In order to solve the above technical problems, the embodiment of the present application provides a key structure, which adopts the following technical solutions, including:

[0005] At least one button, the button is installed at the installation opening of the housing, and the position of the button corresponds to the switch for controlling the on and off of the circuit, and each of the buttons has at least one pressing portion for pressing the switch;

[0006] The soft glue is fixed in the installation opening and is located between the button and the switch. The soft glue has an elastic part arranged corresponding to the pressing part. The elastic part protrudes toward the button and abuts against the button or is connected to the button.

[0007] Furthermore, the soft rubber is provided with an active cavity corresponding to the position of the switch, and the elastic part is movably arranged in the active cavity.

[0008] Furthermore, the elastic part is connected to the inner wall of the active cavity through supporting ribs.

[0009] Furthermore, the elastic portion is in a ring shape, and a through hole is formed on the elastic portion for the pressing portion to pass through, so that the pressing portion abuts against the switch after passing through the through hole.

[0010] Furthermore, a groove for accommodating the soft glue is provided in the shell; the soft glue is fixed in the groove by injection molding or gluing.

[0011] Furthermore, the button is connected to the shell via a buckle.

[0012] Furthermore, a flange is provided on the edge of the groove located at the installation opening, and the buckle is clamped on the flange.

[0013] Furthermore, the button and the soft rubber are separately arranged.

[0014] Furthermore, the button and the soft rubber are integrally arranged, and the soft rubber is connected to the button through the elastic part.

[0015] In order to solve the above technical problems, the present application also provides a handheld dental instrument handle, which adopts the following technical solution: including a shell, a switch 31 arranged in the shell, and the button structure.

[0016] Compared with the prior art, this application has the following beneficial effects:

[0017] The elastic part of the present application has a certain resilience, so that the feedback experience of using the button is better. At the same time, the elastic part is against the button or connected to the button, so that the soft glue and the shell and the elastic part and the button are tightly connected, effectively preventing water from entering the shell through the gap between the button and the shell, improving the waterproof sealing, and avoiding short circuit and static electricity damage to the switch and control motherboard. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the scheme of the present application, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is one of the exploded views of the first embodiment of the key structure of the present application;

[0020] Figure 2 This is the second exploded view of the first embodiment of the key structure of the present application;

[0021] Figure 3 is a cross-sectional view of the first embodiment of the key structure of the present application;

[0022] Figure 4 yes Figure 3 A is an enlarged schematic diagram;

[0023] Figure 5 This is an exploded view of the second embodiment of the key structure of the present application;

[0024] Figure 6 This is a partial exploded view of the second embodiment of the key structure of the present application;

[0025] Figure 7 yes Figure 6 A magnified schematic diagram of B;

[0026] Figure 8is a cross-sectional view of the second embodiment of the key structure of the present application;

[0027] Fig. 9 yes Figure 8 A magnified schematic diagram of middle C;

[0028] Fig.10 It is a schematic diagram of the structure of soft glue.

[0029] Figure numerals: 1. button; 2. shell; 3. control main board; 4. soft rubber; 11. pressing part; 12. buckle; 21. installation port; 22. groove; 23. flange; 31. switch; 41. elastic part; 42. movable cavity; 43. supporting rib; 44. through hole. DETAILED DESCRIPTION

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0031] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0032] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0033] Embodiment 1 of the key structure of the present application

[0034] As attached Figure 1 To Attachment Figure 4 And attached Fig.10 As shown, an embodiment of the present application provides a key structure, including:

[0035] At least one button 1, the button 1 is installed in the installation opening 21 of the housing 2, and the position corresponds to the switch 31 for controlling the on and off of the circuit, and each button 1 has at least one pressing portion 11 for pressing the switch 31;

[0036] The soft glue 4 is fixed in the installation opening 21 and is located between the button 1 and the switch 31. The soft glue 4 has an elastic portion 41 arranged corresponding to the pressing portion 11. The elastic portion 41 protrudes toward the button 1 and abuts against the button 1 or is connected to the button 1.

[0037] The elastic part 41 of the embodiment of the present application has a certain resilience, so that the feedback experience of the button 1 is better. At the same time, the elastic part 41 is against the button 1 or connected to the button 1, so that the soft glue 4 and the shell 2 and the elastic part 41 and the button 1 are tightly connected, effectively preventing water from entering the shell 2 through the gap between the button 1 and the shell 2, improving the waterproof sealing, and avoiding short circuit and static electricity damage to the switch 31.

[0038] Furthermore, the switch 31 is arranged on the control main board 3, and the button 1 can be provided with a pressing part 11 for pressing the switch 31, and two pressing parts 11, three pressing parts 11, or even more than three pressing parts 11 can be provided on one button 1, and the pressing parts 11 are independent of each other; the soft glue 4 can be made of rubber, and the button formed thereby has strong durability, is not easy to be damaged or aged, and has a longer service life; at the same time, the soft glue 4 is made of soft material, and the sound generated during use will be reduced accordingly, thereby reducing the noise pollution when the button is used.

[0039] Furthermore, the soft glue 4 is provided with an active cavity 42 corresponding to the position of the switch 31, and the elastic part 41 is movably arranged in the active cavity 42. When pressed, only the elastic part 41 moves up and down, and other parts of the soft glue 4 do not move, thereby maintaining the sealing between the soft glue 4 and the housing 2. At the same time, the elastic part 41 is always against or connected to the lower end surface of the button 1, thereby maintaining the sealing between the soft glue 4 and the button 1, effectively preventing water from entering the housing 2 from the gap between the button 1 and the housing 2, and avoiding short circuits and static electricity damage to the switch 31 and the control mainboard 3.

[0040] Furthermore, the elastic part 41 is connected to the inner wall of the active cavity 42 via the support ribs 43. The provision of the support ribs 43 improves the deformation ability of the elastic part 41, further improves the resilience of the elastic part 41, and makes the feedback experience of the key 1 better.

[0041] Furthermore, the elastic part 41 is in a ring shape, and a through hole 44 is provided on the elastic part 41 for the pressing part 11 to pass through, so that the pressing part 11 can be pressed against the switch 31 after passing through the through hole 44. The button 1 does not need to pass through the soft glue 4 to press the switch 31, which reduces the stroke of the button 1 pressing the switch 31, improves the touch of the button 1 pressing the switch 31, and avoids the button 1 pressing on the soft glue 4 to cause a significant increase in the pressing force and a soft pressing feeling. The button 1 is directly pressed on the switch 31, so that the damping feel is very comfortable and smoother to use. When used for a long time, the fingers will not feel tired, and the feedback experience of the button 1 is better. At the same time, the ring-shaped elastic part 41 can be tightly connected with the pressing part 11, and the soft glue 4 corresponding to the button 1 is also in a ring shape, which effectively prevents water from entering the shell 2 from the gap between the button 1 and the shell 2, improves the waterproof sealing, and avoids the situation where the switch 31 is damaged by short circuit and static electricity.

[0042] Furthermore, a groove 22 for accommodating the soft glue 4 is provided in the housing 2. The design of the groove 22 can increase the contact area between the housing 2 and the soft glue 4, further reduce the gap between the button 1 and the housing 2, improve the waterproof sealing, and avoid short circuits and static electricity damage to the switch 31 and the control motherboard 3.

[0043] Furthermore, the soft glue 4 is fixed in the groove 22 by injection molding or gluing. The injection molding method is to melt the material directly and inject it into the mold fixed on the shell 2, so as to fix the soft glue 4 on the shell 2; the gluing method is to apply glue or adhesive on the groove 22 and / or the soft glue 4, so as to stick and fix the soft glue 4 on the shell 2; no matter which method is adopted, the soft glue 4 is tightly connected with the shell 2, reducing the gap between the button 1 and the shell 2, improving the waterproof sealing, and avoiding short circuit and static electricity damage to the switch 31 and the control motherboard 3.

[0044] Furthermore, the button 1 is connected to the housing 2 via a buckle 12. The groove 22 is provided with a flange 23 on the edge of the mounting opening 21, and the buckle 12 is clamped on the flange 23. The buckle 12 can not only limit the position of the button 1, but also facilitate the disassembly and assembly of the button 1.

[0045] Furthermore, soft glue holes for the buckle 12 to pass through are provided between the support ribs 43 , and the soft elastic soft glue holes and the relatively hard buckle 12 fit tightly together to ensure good waterproof sealing between the button 1 and the soft glue 4 .

[0046] Furthermore, the button 1 and the soft glue 4 are separately provided, and the elastic part 41 is against the button 1. The separate provision is to separate the button 1 and the soft glue 4 into two independent parts, which are respectively installed on the housing 2 during assembly. The separate provision is conducive to improving the overall flexibility. The button 1 and the soft glue 4 can be manufactured separately, and different materials and processing techniques can also be used to achieve better performance and appearance.

[0047] Embodiment 2 of the key structure of the present application

[0048] As attached Figures 5 to 10 As shown, the difference between the second embodiment and the first embodiment is the different arrangement of the button 1 and the soft glue 4. In the first embodiment, the button 1 and the soft glue 4 are separately arranged, while in the second embodiment, the button 1 and the soft glue 4 are integrated.

[0049] Furthermore, the button 1 is integrally provided with the soft glue 4, and the soft glue 4 is integrally connected with the button 1 through the elastic part 41. The integral provision is to combine the button 1 and the soft glue 4 into a whole, and the whole is installed on the housing 2 during assembly. The integral provision makes the button 1 and the soft glue 4 integrated, which can provide higher strength and stability, reduce the movement or looseness between the components, thereby increasing the durability and reliability of the product. At the same time, the integral provision makes the sealing between the button 1 and the soft glue 4 stronger, reduces the entry of moisture or dust, and creates a gap between the button 1 and the soft glue 4, further improving the waterproof performance of the product.

[0050] Based on the above-mentioned key structure, the embodiment of the present application further provides a handheld dental instrument handle, comprising: a housing 2, a switch 31 disposed in the housing 2, and the key structure. The housing 2 is provided with a mounting port 21, the control main board 3 is provided with a switch 31, the key 1 is mounted on the mounting port 21 and the position corresponds to the switch 31 on the control main board 3, each of the keys 1 has at least one pressing portion 11 for pressing the switch 31, the soft glue 4 is provided between the key 1 and the control main board 3, and the soft glue 4 has an elastic portion 41 provided corresponding to the pressing portion 11.

[0051] The elastic part 41 of the present application has a certain resilience, so that the feedback experience of the button 1 when using it is better. At the same time, the soft glue 4 and the shell 2 and the elastic part 41 and the button 1 are tightly connected, which effectively prevents water from entering the shell 2 through the gap between the button 1 and the shell 2, improves the waterproof sealing, and avoids short circuit and static electricity damaging the switch 31 and the control motherboard 3.

[0052] Furthermore, the button 1 can be provided with a pressing portion 11 for pressing the switch 31, and two pressing portions 11, three pressing portions 11, or even more than three pressing portions 11 can be provided on one button 1, and the pressing portions 11 are independent of each other; the soft glue 4 can be made of rubber, and the button formed thereby has strong durability, is not easy to be damaged or aged, and has a longer service life; at the same time, the soft glue 4 is made of a soft material, and the sound generated during use will be reduced accordingly, thereby reducing the noise pollution when the button is used.

[0053] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A key structure, characterized in that: include: At least one button (1), the button (1) being mounted on a mounting opening (21) of a housing (2) and having a position corresponding to a switch (31) on a control mainboard (3) for controlling the on / off of a circuit, and each button (1) having at least one pressing portion (11) for pressing the switch (31); A soft glue (4) is fixed in the mounting opening (21) and is located between the button (1) and the switch (31); the soft glue (4) has an elastic portion (41) arranged corresponding to the pressing portion (11); the elastic portion (41) protrudes toward the button (1) and abuts against the button (1) or is connected to the button (1).

2. The key structure according to claim 1, characterized in that: The soft rubber (4) is provided with an active cavity (42) whose position corresponds to the switch (31), and the elastic part (41) is movably arranged in the active cavity (42).

3. The key structure according to claim 2, characterized in that: The elastic portion (41) is connected to the inner wall of the active cavity (42) via a supporting rib (43).

4. The key structure according to claim 1, characterized in that: The elastic part (41) is in a ring shape, and a through hole (44) is provided on the elastic part (41) for the pressing part (11) to pass through, so that the pressing part (11) abuts against the switch (31) after passing through the through hole (44).

5. The key structure according to claim 1, characterized in that: A groove (22) for accommodating the soft glue (4) is provided in the shell (2); the soft glue (4) is fixed in the groove (22) by injection molding or gluing.

6. The key structure according to claim 5, characterized in that: The button (1) is connected to the housing (2) via a buckle (12).

7. The key structure according to claim 6, characterized in that: The groove (22) is provided with a flange (23) on the edge of the installation opening (21), and the buckle (12) is clamped on the flange (23).

8. The key structure according to any one of claims 1 to 7, characterized in that: The button (1) and the soft rubber (4) are arranged separately.

9. The key structure according to any one of claims 1 to 7, characterized in that: The button (1) and the soft glue (4) are integrally arranged, and the soft glue (4) is connected to the button (1) via the elastic part (41).

10. A handheld dental instrument handle, characterized in that: include: A housing (2), a switch (31) arranged in the housing (2), and a key structure according to any one of claims 1 to 9.

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