Piezoelectric switch
By adopting through-design and waterproof resin sealing in the piezoelectric switch, combined with the waterproofing measures of the o-ring, the problems of complex mechanical switch structure and difficult work in wet environments are solved, and efficient waterproofing and rapid response are achieved.
Patent Information
- Application Number
- CN202420816401.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-19
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-19
AI Technical Summary
Traditional mechanical switches are complex and prone to failure, have slow reaction speed, and are difficult to prevent water, so they cannot work normally in wet environments.
A piezoelectric switch is designed, using a through switch housing and a translucent aperture, a built-in piezoelectric ceramic sheet and an electrical control board, a seal at the bottom is filled with waterproof resin, and an O-ring is installed on the shell to achieve waterproof function.
The waterproof performance of the piezoelectric switch is realized, ensuring normal operation in wet environments, and improving response speed and connection stability, avoiding leads falling off.
Smart Images
Figure CN222192329U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electrical switches, in particular to a piezoelectric switch. Background Art
[0002] A piezoelectric switch is an electrical switch that is a relaxation oscillator that is constantly charged and discharged. If the piezoelectric switch is not touched, the relaxation oscillator has a fixed charge and discharge cycle, and the frequency can be measured. If we use our fingers or touch the piezoelectric switch, the dielectric constant of the capacitor will increase, the charge and discharge cycle will become longer, and the frequency will decrease accordingly. By measuring the change in the cycle, the touch action can be detected and converted into an electrical signal for processing. Based on the processing results, the piezoelectric switch can control the on and off state of the circuit, thereby realizing the on and off control of lighting, electrical appliances and other equipment.
[0003] Traditional mechanical switches are usually composed of multiple mechanical parts, with complex structures and prone to failure. In addition, the life of mechanical switches is usually affected by the wear and fatigue of mechanical parts and has a certain life limit. Due to the inherent defects of the mechanical structure, the response speed of mechanical switches is slow. In addition, since the mechanical structure requires pressing the switch, it is difficult to make it waterproof and it is difficult to work normally when there is water on the button surface. Utility Model Content
[0004] In view of this, an object of the present invention is to provide a piezoelectric switch to solve the above-mentioned problem.
[0005] Based on the above purpose, the utility model provides a piezoelectric switch, comprising:
[0006] The switch housing has an outer fixing ring at the top, the housing is of through-type design, and an outer thread is provided at the outer circular end of the switch housing;
[0007] A fastening nut, threadedly connected to the external thread;
[0008] A light-transmitting ring is arranged on the inner side of the switch housing, and a piezoelectric ceramic sheet is arranged in the light-transmitting ring;
[0009] An electrical control board is arranged in the switch housing, and connecting leads are arranged on the electrical control board.
[0010] As an optional implementation, the bottom seal of the switch housing is filled with waterproof resin.
[0011] Furthermore, the waterproof resin also wraps the connecting lead in the switch housing.
[0012] As an optional implementation, an O-ring is sleeved on the switch housing, and the O-ring is located between the bottom of the outer fixing ring and the top of the fastening nut.
[0013] As an optional implementation, the light-transmitting ring is transparent.
[0014] As an optional implementation manner, the piezoelectric ceramic sheet is a plane or a concave surface with a depression in the middle.
[0015] The beneficial effects of the utility model are as follows: the bottom of the switch housing is sealed and filled with waterproof resin, and the resin also covers the connecting leads, and an O-ring is sleeved on the switch housing to achieve waterproofing of the piezoelectric switch. Since the resin also covers the connecting leads, the leads will not be easily pulled, and the connection points between the leads and the electrical control board will not easily fall off. In addition, the piezoelectric switch is a switch based on the piezoelectric effect. Its working principle is that when external pressure is applied to the piezoelectric ceramic sheet, an electrical signal will be generated, thereby triggering the action of the switch. Therefore, while ensuring that the piezoelectric switch is waterproof, water on the outer surface of the piezoelectric ceramic sheet will not affect normal operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1 It is an exploded view of an embodiment of the utility model;
[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the switch housing according to an embodiment of the utility model.
[0019] The markings in the figure are:
[0020] 1. Switch housing; 11. External fixing ring; 12. External thread; 2. Fastening nut; 3. Translucent ring; 4. Piezoelectric ceramic piece; 5. Electrical control board; 6. Connecting lead; 7. Waterproof resin; 8. O-ring. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.
[0022] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0023] like Figure 1-Figure 2 As shown, a piezoelectric switch comprises:
[0024] The switch housing 1 has an outer fixing ring 11 at the top, the housing is of through-type design, and an outer thread 12 is provided at the outer circular end of the switch housing 1;
[0025] A fastening nut 2, threadedly connected to the external thread 12;
[0026] A light-transmitting ring 3 is arranged on the inner side of the switch housing 1, and a piezoelectric ceramic sheet 4 is arranged in the light-transmitting ring 3;
[0027] The electrical control board 5 is arranged in the switch housing 1 , and the electrical control board 5 is provided with connecting leads 6 .
[0028] As an optional implementation, the bottom of the switch housing 1 is sealed and filled with a waterproof resin 7 .
[0029] In this embodiment, the bottom of the switch housing 1 is sealed and filled with a waterproof resin 7, and the resin also covers the connecting lead 6, and an O-ring 8 is sleeved on the switch housing 1 to achieve waterproofing of the piezoelectric switch. Since the resin also covers the connecting lead 6, the lead will not be easily pulled, and the connection point between the lead and the electrical control board 5 is not easy to fall off. The piezoelectric switch has a faster response speed than the mechanical switch, and the electrical control board 5, the connecting lead 6 and the piezoelectric ceramic sheet 4 are electrically connected.
[0030] Furthermore, the waterproof resin 7 also wraps the connecting lead 6 in the switch housing 1;
[0031] In this way, the lead wire will not be easily pulled, and the connection point between the lead wire and the electrical control board 5 will not fall off easily.
[0032] As an optional implementation, an O-ring 8 is sleeved on the switch housing 1, and the O-ring 8 is located between the bottom of the outer fixing ring 11 and the top of the fastening nut 2;
[0033] In this way, when water from the outside tries to enter the interior of the device through the piezoelectric switch installed on the device, it will be blocked by the squeezed and deformed O-ring 8.
[0034] As an optional implementation, the light-transmitting ring 3 is transparent;
[0035] In this way, the light-transmitting circle 3 can transmit the light emitted from the electrical control board 5 .
[0036] As an optional implementation, the piezoelectric ceramic sheet 4 is a plane or a concave surface with a depression in the middle;
[0037] In this way, you can choose a flat or concave surface according to your preference.
[0038] A person skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention is limited to these examples; under the concept of the present invention, the technical features in the above embodiments or different embodiments may also be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity. Any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.
Claims
1. A piezoelectric switch, characterized in that: include: A switch housing (1) is provided with an outer fixing ring (11) at the top end, the housing is of a through-type design, and an outer circular end of the switch housing (1) is provided with an outer thread (12); A fastening nut (2) threadedly connected to the external thread (12); A light-transmitting ring (3) is arranged on the inner side of the switch housing (1), and a piezoelectric ceramic sheet (4) is arranged in the light-transmitting ring (3); An electrical control board (5) is arranged in the switch housing (1), and a connecting lead (6) is arranged on the electrical control board (5).
2. A piezoelectric switch according to claim 1, characterized in that: The bottom of the switch housing (1) is sealed and filled with waterproof resin (7).
3. A piezoelectric switch according to claim 2, characterized in that: The waterproof resin (7) also wraps the connecting lead (6) inside the switch housing (1).
4. A piezoelectric switch according to claim 1, characterized in that: An O-ring (8) is sleeved on the switch housing (1), and the O-ring (8) is located between the bottom of the outer fixing ring (11) and the top of the fastening nut (2).
5. A piezoelectric switch according to claim 1, characterized in that: The light-transmitting ring (3) is transparent.
6. A piezoelectric switch according to claim 1, characterized in that: The piezoelectric ceramic sheet (4) is a plane with a concave surface that is recessed in the middle.