Handle and handheld dental medical device
By using an innovative design with a ring circuit board and button switches in the handle, the problems of poor grip and high manufacturing difficulty have been solved, resulting in a better operating experience and reduced manufacturing costs.
Patent Information
- Application Number
- CN202423020145.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-06
AI Technical Summary
In the existing technology, the handle has a poor grip and is difficult to manufacture. Especially when there is no installation space between the motor and the shell, the button switch cannot be properly placed, resulting in an increase in the diameter of the shell or local bulges, which affects the user experience and manufacturing costs.
A ring-shaped circuit board is mounted on the drive shaft, and the push-button switch is assembled on the ring-shaped circuit board. The push-button switch is aligned with the through hole. The outer shell does not need to be increased in diameter and does not require an additional protruding structure. The combination of a fixed cylinder, sealing sleeve and elastic deformation sleeve improves the grip and pressing feel, and reduces the processing difficulty and cost.
It improves the grip and pressing feel of the handle, reduces the processing difficulty and cost of the casing, and maintains the reliability and sealing of the device.
Smart Images
Figure CN223652478U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of dental medical device technology, and more specifically, to a handle and a handheld dental medical device. Background Technology
[0002] In handles, to ensure a comfortable grip, the diameter of the grip area must be appropriate and not too thick. However, some devices have standard components like axially mounted motors that cannot be appropriately sized due to performance or price factors, resulting in no clearance between the motor and the housing. Furthermore, some handles require the placement of push-button switches in suitable pressing positions, necessitating placement between the motor and housing, but there is no installation space between them. To address these issues, placing the circuit board horizontally between the housing and motor would require either increasing the housing diameter or creating a localized protrusion in the button area. Increasing the housing diameter would affect the grip, while a localized protrusion would negatively impact the pressing feel and increase the difficulty and cost of housing manufacturing. Utility Model Content
[0003] The present application provides a handle and a handheld dental medical device to solve the problems of poor grip and high manufacturing difficulty in the prior art.
[0004] To solve the above-mentioned technical problems, this application provides a handle, which adopts the following technical solution:
[0005] A handle includes: a housing, a motor, a push-button switch, and a ring-shaped circuit board; the housing has a through hole on one side and a transmission hole at one end; the motor is arranged along the length of the housing, and one end of the motor has a transmission shaft that extends through the transmission hole; the ring-shaped circuit board is sleeved on the transmission shaft and located inside the housing; the push-button switch is mounted on the ring-shaped circuit board and is aligned with the through hole.
[0006] Furthermore, the push-button switch includes a keycap and a body, the body being electrically connected to the annular circuit board, the keycap being aligned with the through hole and used to trigger the body; in the radial direction of the drive shaft, the height of the keycap is higher than the height of the outer periphery of the annular circuit board to form a height difference; the keycap moves in a direction toward or away from the body to form a trigger stroke; the height difference is greater than the trigger stroke.
[0007] Furthermore, the outer diameter of the annular circuit board is less than or equal to the outer diameter of the motor.
[0008] Furthermore, the handle also includes a fixed cylinder located inside the housing, the fixed cylinder being sleeved on the drive shaft and connected to the end of the motor, and the annular circuit board being sleeved on the fixed cylinder and connected to the fixed cylinder.
[0009] Furthermore, the fixed cylinder includes a cylindrical body and an annular plate arranged coaxially. The annular plate is located at the end of the cylindrical body and is connected to the end of the motor. The cylindrical body is sleeved on the transmission shaft and spaced apart from the transmission shaft.
[0010] Furthermore, the handle also includes a sealing sleeve, which is fitted onto the outer wall of the cylinder and located between the cylinder and the outer shell.
[0011] Furthermore, the inner wall of the sealing sleeve is provided with a sealing ring, which is sleeved on the outer wall of the drive shaft.
[0012] Furthermore, the handle also includes an elastic deformation sleeve, which is disposed at the through hole and snapped into the outer shell, and the elastic deformation sleeve abuts against the push-button switch.
[0013] Furthermore, the inner wall of the elastic deformation sleeve is provided with an abutting post, which abuts against the push-button switch.
[0014] To address the aforementioned technical problems, this application also provides a handheld dental medical device, which employs the following technical solution:
[0015] A handheld dental medical device, including a handle as described above.
[0016] Compared with the prior art, the technical solution of this application has the following advantages: the use of a ring circuit board, which is sleeved on the drive shaft and the button switch is mounted on the ring circuit board, not only makes it convenient to place the button switch in a suitable pressing position, but also eliminates the need to increase the diameter of the outer shell, and the outer shell does not need to add an extra protruding structure corresponding to the position of the button switch. This not only improves the grip and pressing feel when operating the handle, but also reduces the difficulty and cost of processing and molding the outer shell. Attached Figure Description
[0017] To more clearly illustrate the solution of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is an exploded view of a handheld dental medical device provided in an embodiment of this application;
[0019] Figure 2 This is a cross-sectional view of a handheld dental medical device provided in an embodiment of this application.
[0020] Reference numerals: 1. Outer shell; 11. Through hole; 2. Motor; 21. Drive shaft; 3. Push button switch; 4. Annular circuit board; 5. Fixed cylinder; 51. Cylinder body; 52. Annular plate; 6. Sealing sleeve; 7. Sealing ring; 8. Elastic deformation sleeve; 9. Abutment post. Detailed Implementation
[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.
[0022] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0023] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.
[0024] This application provides a handle, such as... Figure 1 and 2 As shown, the handle includes: a housing 1, a motor 2, a push-button switch 3, and a ring circuit board 4; the housing 1 has a through hole 11 on one side and a transmission hole at one end; the motor 2 is arranged along the length of the housing 1, and one end of the motor 2 has a transmission shaft 21 that passes through the transmission hole; the ring circuit board 4 is sleeved on the transmission shaft 21 and located inside the housing 1; the push-button switch 3 is mounted on the ring circuit board 4 and is aligned with the through hole 11.
[0025] The beneficial effects of the handle provided in this application embodiment are as follows: the drive shaft 21 extends through the drive hole to facilitate the installation of tools such as working tips and brush heads together with the drive shaft 21; the push-button switch 3 is aligned with the through hole 11 to facilitate pressing the push-button switch 3 during operation; the use of a ring circuit board 4, which is sleeved on the drive shaft 21 and the push-button switch 3 is mounted on the ring circuit board 4, not only facilitates the placement of the push-button switch 3 in a suitable pressing position, but also eliminates the need to increase the diameter of the outer shell 1, and the outer shell 1 does not need to add an additional protruding structure corresponding to the position of the push-button switch 3. This not only improves the grip and pressing feel when operating the handle, but also reduces the difficulty and cost of processing and molding the outer shell 1.
[0026] Furthermore, the push-button switch 3 and the motor 2 are electrically connected to the annular circuit board 4, respectively.
[0027] In this embodiment, the motor 2 can be turned on and off by pressing the button switch 3.
[0028] Furthermore, the key switch 3 includes a keycap (not shown) and a body (not shown), the body being electrically connected to the annular circuit board 4, and the keycap being aligned with the through hole 11 and used to trigger the body;
[0029] In the radial direction of the drive shaft 21, the height of the keycap is higher than the height of the outer periphery of the annular circuit board 4 to form a height difference; the keycap moves in a direction toward or away from the body to form a trigger stroke; the height difference is greater than the trigger stroke.
[0030] In this embodiment, the height difference between the keycap and the annular circuit board 4 is greater than the trigger stroke of the keycap, ensuring that the keycap is not blocked by the outer periphery of the annular circuit board 4 when it is pressed, thereby improving the trigger accuracy of the key switch 3.
[0031] In this embodiment, when the keycap is pressed, the keycap moves toward the body. When the keycap comes into contact with the body and is locked, a closed circuit is formed between the body and the annular circuit board 4. The annular circuit board 4 drives the motor 2 to start, and the transmission shaft 21 starts to rotate. When the keycap is pressed again, the keycap first moves toward the body and is unlocked, and then moves away from the body. The circuit between the body and the annular circuit board 4 is broken, the annular circuit board 4 drives the motor 2 to turn off, and the transmission shaft 21 stops rotating.
[0032] Furthermore, the outer diameter of the annular circuit board 4 is less than or equal to the outer diameter of the motor 2.
[0033] In this embodiment, the outer diameter of the annular circuit board 4 is less than or equal to the outer diameter of the motor 2. This means that when using the annular circuit board 4, there is no need to increase the diameter of the outer shell 1, and the outer shell 1 does not need to have an additional protrusion structure corresponding to the position of the button switch 3. This not only improves the pressing feel when operating the handle, but also reduces the difficulty and cost of processing and molding the outer shell 1.
[0034] Furthermore, the handle also includes a fixed cylinder 5 located inside the housing 1, the fixed cylinder 5 being sleeved on the transmission shaft 21 and connected to the end of the motor 2, and the annular circuit board 4 being sleeved on the fixed cylinder 5 and connected to the fixed cylinder 5.
[0035] In this embodiment, the fixed cylinder 5 is provided to prevent the transmission shaft 21 from rotating and causing the annular circuit board 4 to rotate, thereby improving the reliability of the handle.
[0036] Furthermore, the fixed cylinder 5 includes a cylinder body 51 and an annular plate 52 arranged coaxially. The annular plate 52 is located at the end of the cylinder body 51 and is connected to the end of the motor 2. The cylinder body 51 is sleeved on the transmission shaft 21 and spaced apart from the transmission shaft 21.
[0037] In this embodiment, the cylinder 51 and the drive shaft 21 are spaced apart to facilitate the rotation of the drive shaft 21 and prevent the fixed cylinder 5 from affecting the rotation of the drive shaft 21; the annular plate 52 is connected to the end of the motor 2 to prevent the fixed cylinder 5 from being displaced.
[0038] Specifically, the annular circuit board 4, the annular plate 52, and the motor 2 are fixedly connected by threaded parts.
[0039] Furthermore, the handle also includes a sealing sleeve 6, which is fitted onto the outer wall of the cylinder 51 and located between the cylinder 51 and the outer shell 1.
[0040] In this embodiment, the sealing sleeve 6 can seal the outer shell 1, preventing moisture, dust and other contaminants from entering the outer shell 1 and preventing damage to the annular circuit board 4 due to moisture or dust. In addition, the sealing sleeve 6 can also reduce vibration, reducing the vibration amplitude of the outer shell 1 when the drive shaft 21 rotates.
[0041] Furthermore, the inner wall of the sealing sleeve 6 is also provided with a sealing ring 7, which is sleeved on the outer wall of the transmission shaft 21.
[0042] In this embodiment, the sealing ring 7 enhances the connection stability between the sealing sleeve 6 and the transmission shaft 21, and can further improve the sealing performance of the motor 2, preventing moisture, dust and other contaminants from entering the motor 2, and further improve the shock absorption effect.
[0043] Furthermore, the sealing ring 7 and the sealing sleeve 6 are integrally formed.
[0044] Furthermore, the sealing ring 7 and the sealing sleeve 6 are made of silicone.
[0045] Furthermore, the handle also includes an elastic deformation sleeve 8, which is disposed at the through hole 11 and snapped into the outer shell 1, and the elastic deformation sleeve 8 abuts against the button switch 3.
[0046] In this embodiment, the elastic deformable sleeve 8 can seal the through hole 11 to prevent moisture, dust and other substances from entering the housing 1 through the through hole 11, and to prevent the annular circuit board 4 from being damaged by moisture or dust; and the elastic deformable sleeve 8 can facilitate pressing the button switch 3 during operation.
[0047] In this embodiment, the elastic deformation sleeve 8 abuts against the button cap.
[0048] Furthermore, the elastic deformation sleeve 8 is a silicone part.
[0049] Furthermore, the inner wall of the elastic deformation sleeve 8 is provided with an abutting post 9, which abuts against the push button switch 3.
[0050] In this embodiment, an abutment post 9 is provided to reduce the pressing stroke when pressing the button switch 3, making it easier to operate.
[0051] In this embodiment, the abutting post 9 abuts against the button cap.
[0052] This application also provides a handheld dental medical device, such as... Figure 1 and 2 As shown, the handheld dental medical device includes a handle as described above.
[0053] Optionally, the handheld dental medical device further includes a working tip (not shown) connected to the drive shaft 21.
[0054] Optionally, the handheld dental medical device also includes a brush head (not shown) connected to the drive shaft 21.
[0055] The beneficial effects of the handle provided in this application embodiment are as follows: the drive shaft 21 extends through the drive hole to facilitate the installation of tools such as working tips and brush heads together with the drive shaft 21; the push-button switch 3 is aligned with the through hole 11 to facilitate pressing the push-button switch 3 during operation; the use of a ring circuit board 4, which is sleeved on the drive shaft 21 and the push-button switch 3 is mounted on the ring circuit board 4, not only facilitates the placement of the push-button switch 3 in a suitable pressing position, but also eliminates the need to increase the diameter of the outer shell 1, and the outer shell 1 does not need to add an additional protruding structure corresponding to the position of the push-button switch 3. This not only improves the grip and pressing feel when operating the handle, but also reduces the difficulty and cost of processing and molding the outer shell 1.
[0056] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.
Claims
1. A handle, characterized in that, include: The device comprises a housing, a motor, a push-button switch, and a ring-shaped circuit board. One side of the housing has a through hole, and the end of the housing has a transmission hole. The motor is positioned along the length of the housing, and one end of the motor has a transmission shaft that extends through the transmission hole. The ring-shaped circuit board is fitted onto the transmission shaft and located inside the housing. The push-button switch is mounted on the ring-shaped circuit board, and the push-button switch is aligned with the through hole.
2. The handle according to claim 1, characterized in that, The push-button switch includes a keycap and a body. The body is electrically connected to the annular circuit board. The keycap is aligned with the through hole and is used to trigger the body. In the radial direction of the drive shaft, the height of the keycap is higher than the height of the outer periphery of the annular circuit board to form a height difference; the keycap moves in a direction toward or away from the body to form a trigger stroke; the height difference is greater than the trigger stroke.
3. The handle according to claim 1, characterized in that, The outer diameter of the annular circuit board is less than or equal to the outer diameter of the motor.
4. The handle according to any one of claims 1 to 3, characterized in that, The handle also includes a fixed cylinder located inside the housing, the fixed cylinder being sleeved on the drive shaft and connected to the end of the motor, and the annular circuit board being sleeved on the fixed cylinder and connected to the fixed cylinder.
5. The handle according to claim 4, characterized in that, The fixed cylinder includes a cylindrical body and an annular plate arranged coaxially. The annular plate is located at the end of the cylindrical body and is connected to the end of the motor. The cylindrical body is sleeved on the transmission shaft and spaced apart from the transmission shaft.
6. The handle according to claim 5, characterized in that, The handle also includes a sealing sleeve, which is fitted onto the outer wall of the cylinder and located between the cylinder and the outer shell.
7. The handle according to claim 6, characterized in that, The inner wall of the sealing sleeve is also provided with a sealing ring, which is sleeved on the outer wall of the drive shaft.
8. The handle according to any one of claims 1 to 3, characterized in that, The handle also includes an elastic deformation sleeve, which is disposed at the through hole and snapped into the outer shell, and abuts against the push button switch.
9. The handle according to claim 8, characterized in that, The inner wall of the elastic deformation sleeve is provided with an abutting post, which abuts against the push-button switch.
10. A handheld dental medical device, characterized in that, Includes the handle as described in any one of claims 1 to 9.