Mistaken touch prevention key assembly and electronic equipment
By setting up a support part on the motherboard bracket of the electric toothbrush to prevent deformation from being transmitted to the key area, the problem of false touching of the key caused by the brush head is solved, and the accuracy and reliability of the key signal are achieved.
Patent Information
- Application Number
- CN202420996124.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-09
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-09
AI Technical Summary
The pressure-sensitive button structure of existing electric toothbrushes is prone to deform the motherboard chip due to the force of the brush head, and accidentally trigger the button, causing unnecessary key signal feedback.
An anti-miss touch button assembly is designed. By setting a support part on the motherboard bracket, the deformation between the motherboard bracket and the shell is prevented, ensuring that the pressure-sensitive chip only deforms under the pressure applied by the button area, thereby avoiding mist touch. The assembly includes a housing, a motherboard bracket and a chip plate. The support portion connects the motherboard bracket and the shell to keep the gap unchanged and prevents the chip plate from deforming.
It effectively prevents the buttons from being touched by the brush head due to the force, ensures the accuracy and reliability of the button signals, and avoids unnecessary button triggering.
Smart Images
Figure CN222262699U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of switch buttons, in particular to an anti-mis-touch button assembly and an electronic device. Background Art
[0002] Currently, more and more electric toothbrushes use pressure-sensitive buttons. When the pressure-sensitive button chip is placed on the main board, it directly or indirectly contacts the inner side of the shell button area. When the shell button area is pressed, the pressure is directly or indirectly transmitted to the chip, causing the chip board to deform, which is detected by the chip and feeds back a button signal.
[0003] The existing toothbrush structure is that a plastic shell is set inside the toothbrush shell to install the motor and chip board, the brush head is installed at the power end of the motor, and the chip on the main board and the plastic shell are connected as a whole. When the brush head is subjected to force, due to the lever effect, the chip on the main board will move to the inside of the shell button area, causing the chip board to deform and be detected by the chip, thereby triggering the button by mistake. Utility Model Content
[0004] The first aspect of the utility model provides an anti-mis-touch key assembly, comprising:
[0005] The housing includes a key area and a body area other than the key area;
[0006] A mainboard bracket is connected to the inside of the housing and is provided with a load surface on a side facing the key area, wherein the load surface is provided with a reinforcement area corresponding to the key area;
[0007] A chip board is connected to the load surface and is provided with a chip placement area corresponding to the key area, wherein a pressure sensing chip is provided in the chip placement area;
[0008] Wherein, the pressure-sensitive chip is arranged to be in direct or indirect contact with the key area, and can be deformed according to the pressure change during contact;
[0009] The reinforcement area is provided with a support portion, which is used to prevent the chip placement area from moving toward the button area and to limit the deformation of the body area from being transmitted to the button area, so that the chip placement area is only allowed to deform due to the pressure applied in the direction of the button area, and the pressure sensing chip generates a corresponding electrical signal according to the deformation.
[0010] Preferably, the support portion includes a first end abutting against the inner wall of the fuselage area and a second end abutting against the load surface, and the reinforcement area of the load surface is maintained at a set distance from the inner wall of the fuselage area through the support of the first end and the second end.
[0011] Preferably, the first end includes at least four abutment portions distributed around the button area on the inner wall of the body area, the second end includes at least one abutment portion on the load surface, and the second end passes through and / or abuts against the load surface from the side of the chip board.
[0012] Preferably, a slot is provided on the chip board at a peripheral side corresponding to the pressure sensing chip, so that the support portion can pass through the slot and abut against the inner wall of the body area.
[0013] A second aspect of the present invention provides an electronic device, comprising:
[0014] The above-mentioned anti-mistouch button assembly, and
[0015] A driving device, which is arranged inside the mainboard bracket and has an output shaft;
[0016] A brush head is inserted on the output shaft along the axial direction of the output shaft;
[0017] Among them, the support part is distributed on the peripheral side of the pressure sensing chip along the axial direction of the output shaft, so that when the brush head applies pressure to the driving device in the direction of the key area, the reinforced area provided with the support part can maintain a set distance from the inner wall of the body area.
[0018] Preferably, the driving device includes a motor and a battery for supplying power to the motor. The motor is configured to be electrically connected to the pressure sensing chip and can adjust the operating state of the motor according to the pressure sensing signal received by the pressure sensing chip.
[0019] Preferably, the shell is constructed as a hollow cylinder extending along the axial direction of the output shaft, and an axial hole is opened at the end of the shell corresponding to the output shaft, so that the output shaft can extend out of the shell and connect with the brush head.
[0020] Preferably, the mainboard bracket is constructed as a hollow cylinder distributed along the length direction of the shell, the chip board is constructed as a flat and long plate distributed along the length direction of the shell, and the plane where the chip board is located is perpendicular to the force direction of the key area.
[0021] Preferably, along the axial direction of the output shaft, the brush head and the pressure sensing chip are respectively located on both sides of the shaft hole, and the button area and the bristles on the brush head are located on the same side.
[0022] Preferably, the electronic device is an electric toothbrush.
[0023] Compared with the prior art, the advantages of the utility model are:
[0024] The utility model specifically arranges a support part on the mainboard bracket corresponding to the periphery of the pressure-sensitive chip. Under the action of the support part, the gap between the mainboard bracket and the shell is kept unchanged, which can prevent the mainboard bracket from deforming toward the key area, and then the chip board will not deform, thereby preventing the pressure-sensitive chip from being accidentally touched. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] The accompanying drawings are not intended to be drawn to scale. In the accompanying drawings, each identical or nearly identical component shown in various figures may be represented by the same reference numeral. For the sake of clarity, not every component is labeled in each figure. Now, embodiments of various aspects of the utility model will be described by way of example and with reference to the accompanying drawings, in which:
[0026] Figure 1 It is an exploded view of the local structure of the anti-mistouch key assembly and the electronic device shown in the embodiment of the utility model;
[0027] Figure 2 It is a partial structural cross-sectional view of the anti-mistouch key assembly and the electronic device shown in the embodiment of the utility model;
[0028] Figure 3 It is a schematic diagram of the structure inside the housing shown in the embodiment of the utility model;
[0029] 10. Shell; 101. Shaft hole; 11. Key area; 20. Chip board; 201. Slot hole; 202. Chip placement area; 21. Pressure-sensitive chip; 30. Mainboard bracket; 31. Support part; 40. Drive device; 41. Output shaft; 50. Brush head. DETAILED DESCRIPTION
[0030] In order to better understand the technical content of the present invention, specific embodiments are described below in conjunction with the accompanying drawings.
[0031] Since the bristles of the brush head 50 on the electric toothbrush are usually arranged on the same side as the button area 11, the teeth will come into contact with the bristles during brushing, which will apply pressure to the brush head 50. Since the main board bracket 30 and the chip board 20 inside the shell 10 are designed to be narrow and long with the shell 10, they are relatively easy to deform. With the connection between the motor shaft and the shell 10 as the fulcrum, under the action of the lever, the pressure sensing chip 21 will apply a reaction force to the button area 11, causing the pressure sensing chip 21 to be accidentally touched.
[0032] like Figure 1 As shown, the first aspect of the utility model proposes an anti-mistouch button assembly, which aims to prevent deformation of the body area from being transmitted to the button area 11 to cause a false touch, and when the brush head 50 is under pressure, the reaction force is transmitted to the pressure-sensitive chip 21, thereby avoiding false touches. The assembly mainly includes a shell 10, a chip board 20 and a mainboard bracket 30.
[0033] Among them, the shell 10 includes a button area 11 and a body area other than the button area 11. The button area 11 is more easily deformed than the body area. The motherboard bracket 30 is fixedly arranged inside the shell 10, and a load surface is provided on the side facing the button area 11. The load surface corresponds to the button area 11 and a reinforcement area 301 is provided. The chip board 20 is fixedly arranged on the load surface, and a chip mounting area 202 is provided on the chip board 20 corresponding to the button area 11, and a pressure sensing chip 21 is provided in the chip mounting area 202.
[0034] In this way, the key area 11 can be deformed when pressed, and the pressure sensing chip 21 is set to directly or indirectly contact the key area 11, so that the deformation of the key area 11 can be transmitted to the chip placement area 202 and sensed by the pressure sensing chip 21, so that when the key area 11 is pressed, the pressure sensing chip 21 can respond to the electrical signal according to the pressure change during contact.
[0035] In some embodiments, in order to keep the overall assembly lightweight, the mainboard bracket 30 is made of plastic, and the chip board 20 is configured to be narrow and thin, so that the mainboard bracket 30 and the chip board 20 are easily deformed in the length direction.
[0036] Furthermore, in order to avoid false touches caused by the pressure-sensitive chip 21 moving toward the key area 11 due to the deformation of the mainboard bracket 30 and / or the chip board 20, a support portion 31 is provided between the mainboard bracket 30 and the shell 10. The support portion 31 is used to prevent the pressure-sensitive chip 21 from moving toward the key area 11 and to limit the deformation of the body area from being transmitted to the key area 11, so that the chip placement area 202 is only allowed to deform due to the pressure applied in the direction of the key area 11, and the pressure-sensitive chip 21 generates a corresponding electrical signal according to the deformation. In this way, not only false touches caused by the deformation of the mainboard bracket 30 and / or the chip board 20 can be eliminated, but also false touches caused by the deformation of the body area being transmitted to the key area 11 can be eliminated.
[0037] Specifically, the support portion 31 includes a first end abutting against the inner wall of the body area and a second end abutting against the load surface, and the support of the first end and the second end maintains a set distance between the reinforcement area 301 of the load surface and the inner wall of the body area. Since the gap between the load surface and the body area is relatively small, even the support portion 31 made of plastic can have a high support strength without deformation. Therefore, through the support of the support portion 31, the reinforcement area 301 can maintain a set distance from the inner wall of the body area, ensuring that the reinforcement area 301 will not deform, thereby avoiding accidental touch of the pressure sensing chip 21 on the chip board 20 and the key area 11.
[0038] Optionally, the first end includes at least four abutment portions on the inner wall of the body area distributed around the button area 11, wherein the four abutment portions may be intermittently or continuously distributed around the button area 11, and are used to block the deformation of the body area from being transmitted to the button area 11, and the second end includes at least one abutment portion on the load surface, and the second end passes through and / or abuts against the load surface from the side of the chip board 20, and the abutment portion of the second end may be one, two, three or four, and is discontinuously distributed.
[0039] like Figure 1 and Figure 3 As shown, in a preferred embodiment, the support portion 31 includes four support members, two of which are symmetrically distributed on both sides of the pressure sensing chip 21 along the length direction of the chip board 20, and the other two support members are symmetrically distributed on both sides of the pressure sensing chip 21 along the width direction of the chip board 20. The two support member slots 201 distributed in the corresponding length direction on the chip board 20 enable the support members to pass through the slots 201 and abut against the inner wall of the body area. In this way, it can be ensured that the area inside the four support members will not be squeezed toward the pressure sensing chip 21, which can avoid accidental touches caused by the deformation of the body area on the button area 11, and avoid the pressure sensing chip 21 being accidentally touched due to the deformation of the mainboard bracket 30.
[0040] The second aspect of the present invention provides an electronic device, comprising the above-mentioned anti-mistouch key assembly, a driving device 40 and a brush head 50 .
[0041] Among them, the driving device 40 is arranged inside the mainboard bracket 30 and has an output shaft 41. The brush head 50 is inserted on the output shaft 41 along the axial direction of the output shaft 41. The support part 31 is distributed on the peripheral side of the pressure sensing chip 21 along the axial direction of the output shaft 41. When the brush head 50 applies pressure to the driving device 40 in the direction of the key area 11, the load surface of the area where the support part 31 is provided can maintain a set distance from the inner wall of the body area, so that the pressure sensing chip 21 will not be accidentally touched due to the squeezing of the brush head 50.
[0042] In a specific embodiment, the electronic device is an electric toothbrush, and the driving device 40 includes a motor and a battery for powering the motor. The motor is configured to be electrically connected to the pressure sensing chip 21, and can adjust the operating state of the motor according to the pressure sensing signal received by the pressure sensing chip 21, for example, adjusting the swing frequency, swing angle, etc. of the output shaft 41 according to the pressure received by the pressure sensing chip 21.
[0043] Furthermore, in order to facilitate holding, the shell 10 is constructed as a hollow cylinder extended along the axial direction of the output shaft 41, and an axial hole 101 is opened at the end of the shell 10 corresponding to the output shaft 41, so that the output shaft 41 can extend out of the shell 10 and connect with the brush head 50, wherein the axial hole 101 can be located at the center of the end face of the shell 10 or on the mid-vertical line of the working surface of the brush head 50, which is convenient for holding and brushing.
[0044] In a preferred embodiment, in order to position the motor, battery and chip board 20 within the limited space of the outer shell 10, the mainboard bracket 30 is constructed as a hollow cylinder distributed along the length direction of the outer shell 10, and the interior can be used to accommodate the motor and the battery, and a rectangular load surface is provided on the side facing the key area 11, and the load surface is configured to install the chip board 20. The chip board 20 is constructed as a flat and long plate distributed along the length direction of the outer shell 10, and the plane where the chip board 20 is located is perpendicular to the force direction of the key area 11.
[0045] Furthermore, along the axial direction of the output shaft 41, the brush head 50 and the pressure sensing chip 21 are respectively located on both sides of the shaft hole 101, and the key area 11 and the bristles on the brush head 50 are located on the same side. In this way, with the position of the shaft hole 101 as the fulcrum, the brush head 50, the output shaft 41 and the entire mainboard bracket 30 form a lever. When the bristle part of the brush head 50 is under pressure, one side of the mainboard bracket 30 will be subjected to pressure directed to the key area 11. The existing mainboard bracket 30 that has not been reinforced will squeeze the pressure sensing chip 21 toward the key area 11 and cause a false touch. A support portion 31 is specifically provided around the corresponding pressure sensing chip 21 on the mainboard bracket 30. Under the action of the support portion 31, the gap between the mainboard bracket 30 and the housing 10 is kept unchanged, which can prevent the mainboard bracket 30 from deforming toward the key area 11, and then the chip board 20 will not deform, thereby preventing the pressure sensing chip 21 from being falsely touched.
[0046] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. A person with ordinary knowledge in the technical field to which the present invention belongs may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the claims.
Claims
1. An anti-mistouch button assembly, characterized in that: include: A housing (10) comprising a key area (11) and a body area other than the key area (11); A mainboard bracket (30) is connected to the inside of the housing (10) and is provided with a load surface on a side facing the key area (11), wherein the load surface is provided with a reinforcement area (301) corresponding to the key area (11); A chip board (20) is connected to the load surface and is provided with a chip placement area (202) corresponding to the key area (11), wherein a pressure sensing chip (21) is provided in the chip placement area (202); The pressure sensing chip (21) is arranged to be in direct or indirect contact with the key area (11), and can be deformed according to changes in pressure during contact; The reinforcement area (301) is provided with a support portion (31), and the support portion (31) is used to prevent the chip placement area (202) from moving in the direction of the key area (11), and to limit the deformation of the body area from being transmitted to the key area (11), so that the chip placement area (202) is only allowed to deform due to the pressure applied in the direction of the key area (11), and the pressure sensing chip (21) generates a corresponding electrical signal according to the deformation.
2. The anti-mistouch key assembly according to claim 1, characterized in that: The support portion (31) comprises a first end abutting against the inner wall of the fuselage area and a second end abutting against the load surface, and the reinforcement area (301) of the load surface is maintained at a set distance from the inner wall of the fuselage area through the support of the first end and the second end.
3. The anti-mis-touch key assembly according to claim 2, characterized in that: The first end includes at least four abutment portions distributed around the key area (11) on the inner wall of the body area, and the second end includes at least one abutment portion on the load surface, and the second end penetrates and / or abuts against the load surface from the side of the chip board (20).
4. The anti-mis-touch key assembly according to claim 3, characterized in that: A slot hole (201) is provided on the chip board (20) on the peripheral side corresponding to the pressure sensing chip (21), so that the support portion (31) can pass through the slot hole (201) and abut against the inner wall of the body area.
5. An electronic device, characterized in that: include: The anti-mistouch key assembly according to any one of claims 1 to 4, and A driving device (40) is arranged inside the mainboard bracket (30) and has an output shaft (41); A brush head (50) is inserted on the output shaft (41) along the axial direction of the output shaft (41); The support portion (31) is distributed on the peripheral side of the pressure sensing chip (21) along the axial direction of the output shaft (41), so that when the brush head (50) applies pressure to the driving device (40) in the direction of the key area (11), the reinforcement area (301) provided with the support portion (31) can maintain a set distance from the inner wall of the body area.
6. The electronic device according to claim 5, characterized in that: The driving device (40) comprises a motor and a battery for supplying power to the motor. The motor is electrically connected to the pressure sensing chip (21) and can adjust the operating state of the motor according to the pressure sensing signal received by the pressure sensing chip (21).
7. The electronic device according to claim 5, characterized in that: The housing (10) is constructed as a hollow cylindrical body extending in the axial direction of the output shaft (41); an axial hole (101) is provided at the end of the housing (10) corresponding to the output shaft (41), so that the output shaft (41) can extend out of the housing (10) and be connected to the brush head (50).
8. The electronic device according to claim 7, characterized in that: The mainboard bracket (30) is constructed as a hollow cylinder distributed along the length direction of the shell (10), the chip board (20) is constructed as a flat and long plate distributed along the length direction of the shell (10), and the plane where the chip board (20) is located is perpendicular to the force application direction of the key area (11).
9. The electronic device according to claim 8, characterized in that: Along the axial direction of the output shaft (41), the brush head (50) and the pressure sensing chip (21) are respectively located on both sides of the shaft hole (101), and the key area (11) and the bristles on the brush head (50) are located on the same side.
10. The electronic device according to claim 5, characterized in that: The electronic device is an electric toothbrush.