A knock switch based on piezoelectric induction principle

Abstract

The utility model discloses a kind of knock type switches based on piezoelectric induction principle, belong to electronic switch technical field, including the fixed setting of mounting plate in shell, limit port and guide port are provided on mounting plate, limit port and guide port are communicated, the width of limit port is less than the width of guide port, limit buckle is fixedly set on back cover, limit buckle is inserted in guide port and slides, press port is opened in mounting plate, press rod is provided on mounting plate, one end of press rod is connected in mounting plate, the other end of press rod extends to press port, press block is fixedly set on the side of press rod in press port, one side of press block is provided with inclined surface, limit block is fixedly set on back cover, the utility model has the advantages of improving switch assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of electronic switch technology, specifically a knock-type switch based on the piezoelectric induction principle. Background Technology

[0002] Piezoelectric switches operate on the piezoelectric effect, where piezoelectric materials generate an electric charge when subjected to mechanical stress. This charge triggers the switching action of a circuit. Piezoelectric switches typically have no moving parts, resulting in a long lifespan and the ability to withstand millions of switching operations. Due to their high durability, waterproof and dustproof properties, and low power consumption, piezoelectric switches are widely used in industrial control, medical equipment, aerospace, smart lighting, motorized curtains, and automotive electronics.

[0003] Existing piezoelectric switches typically consist of a housing, electronic components, and a back cover. During installation, the electronic components are installed in the housing, and the back cover is attached to the housing with screws.

[0004] However, fastening with screws may cause uneven stress on the back cover, resulting in it lifting up and low installation efficiency.

[0005] Based on this, this utility model designs a tapping switch based on the piezoelectric induction principle to solve the above problems. Utility Model Content

[0006] To achieve the above objectives, this utility model provides the following technical solution: A mounting plate is fixedly disposed within the outer casing. A limiting port and a guide port are provided on the mounting plate, which are connected. The width of the limiting port is less than the width of the guide port. A limiting buckle is fixedly disposed on the rear cover. The limiting buckle slides within the guide port. A pressing port is provided on the mounting plate. A pressing rod is provided on the mounting plate. One end of the pressing rod is connected to the mounting plate, and the other end extends into the pressing port. A pressing block is fixedly disposed on one side of the pressing rod located within the pressing port. An inclined surface is provided on one side of the pressing block. A limiting block is fixedly disposed on the rear cover. When the rear cover is closed on the outer casing and rotates, the limiting buckle slides from the guide port into the limiting port, and the limiting block slides along the inclined surface of the pressing block to the other side of the pressing block.

[0007] By adopting the above technical solution, during installation, the limiting buckle on the back cover is aligned with the guide port and inserted into the guide port. Then, the back cover is rotated, and the limiting buckle rotates from the guide port into the limiting port. The guide buckle is fastened to the mounting plate. At the same time, the limiting block slides along the inclined surface of the pressing block to the other side of the pressing block. The pressing block and the limiting block press against each other, so that the back cover no longer rotates easily. The back cover and the outer shell are tightly connected, which reduces the installation time of the back cover and improves the assembly efficiency of the switch.

[0008] Preferably, the mounting plate has a receiving groove, and an elastic pad is fixedly provided at the bottom of the receiving groove. The pressing rod is fixedly connected to the elastic pad, and a pressing block is fixedly provided on one side of the pressing rod located in the receiving groove. The other end of the pressing block protrudes above the upper surface of the mounting plate. A protrusion is provided on the rear cover. When the protrusion abuts against the pressing block, the pressing rod is pressed downward.

[0009] By adopting the above technical solution, when the back cover rotates, the protrusion first presses against the clamping block, causing the clamping block to drive the pressing rod to move down, so that the limiting block can pass through the pressing block more easily and prevent the pressing rod from breaking under force. As the back cover rotates, the protrusion leaves the clamping block, and the elastic pad pushes the pressing rod upward, so that the pressing block and the limiting block press against each other.

[0010] Preferably, reinforcing plates are fixedly provided on both sides of the pressing rod, and the width of the reinforcing plates increases towards one side of the receiving groove.

[0011] By adopting the above technical solution, the pressure on the pressing rod is more even, preventing the pressing rod from breaking and improving the service life of the pressing rod.

[0012] Preferably, the rear cover has a groove on the side away from the outer shell.

[0013] By adopting the above technical solution, the groove can apply force to the back cover more quickly when it rotates, making the rotation of the back cover easier and more convenient.

[0014] In summary, this application has the following beneficial technical effects: During installation, the limiting buckle on the back cover is aligned with the guide port and inserted into the guide port. Then, the back cover is rotated, and the limiting buckle rotates from the guide port into the limiting port. The guide buckle is fastened to the mounting plate. At the same time, the limiting block slides along the inclined surface of the pressing block to the other side of the pressing block. The pressing block and the limiting block press against each other, so that the back cover no longer rotates easily. The back cover and the outer shell are tightly connected, which can maintain uniform and stable rotation on the mounting plate. It also reduces the installation time of the back cover and improves the assembly efficiency of the switch. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this embodiment;

[0017] Figure 2 This is a schematic diagram of the mounting plate structure in this embodiment;

[0018] Figure 3 for Figure 2 A magnified structural diagram of A in the middle;

[0019] Figure 4 This is a schematic diagram of the structure of the back cover in this embodiment.

[0020] The attached diagram lists the components represented by each number as follows:

[0021] 1. Outer shell; 2. Back cover; 3. Groove; 4. Mounting plate; 5. Pressing block; 6. Pressing port; 7. Clamping block; 8. Limiting port; 9. Guide port; 10. Pressing rod; 11. Reinforcing plate; 12. Elastic pad; 13. Receiving groove; 14. Limiting block; 15. Limiting buckle; 16. Protrusion. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0024] A knocking switch based on the piezoelectric induction principle includes a housing 1 and a back cover 2. A mounting plate 4 is fixedly installed in the housing 1. The mounting plate 4 has a limit port 8 and a guide port 9, which are connected. There are two limit ports 8 and two guide ports 9, symmetrically distributed on the mounting plate 4. The width of the limit port 8 is smaller than the width of the guide port 9. A limit buckle 15 is fixedly installed on the back cover 2. The limit buckle 15 slides in the guide port 9. A pressing port 6 is opened on the mounting plate 4. A pressing rod 10 is installed on the mounting plate 4. One end of the pressing rod 10 is connected to the mounting plate 4, and the other end of the pressing rod 10 extends into the pressing port 6. A pressing block 5 is fixedly installed on one side of the pressing rod 10 located in the pressing port 6. An inclined surface is provided on one side of the pressing block 5. A limit block 14 is fixedly installed on the back cover 2.

[0025] In use, align the limiting buckle 15 on the back cover 2 with the guide port 9 and insert it into the guide port 9. Then rotate the back cover 2, and the limiting buckle 15 rotates from the guide port 9 into the limiting port 8. After being limited by the limiting port 8, the limiting buckle 15 is fastened to the mounting plate 4. At the same time, the limiting block 14 slides along the inclined surface of the pressing block 5. When the limiting block 14 and the pressing block 5 are pressed together, the pressing block 5 is pressed down, so that the pressing rod 10 is pressed down into the pressing port 6 until the limiting block 14 slides to the other side of the pressing block 5. At this time, the pressing block 5 and the limiting block 14 press against each other, so that the back cover 2 no longer rotates easily. The back cover 2 is stably connected to the outer shell 1. The operation is simple, the installation time of the back cover 2 is reduced, and the assembly efficiency of the switch is improved.

[0026] The mounting plate 4 has a receiving groove 13, and an elastic pad 12 is fixedly installed at the bottom of the receiving groove 13. The pressing rod 10 is fixedly connected to the elastic pad 12. A pressing block 7 is fixedly installed on one side of the pressing rod 10 located in the receiving groove 13. The other end of the pressing block 7 is higher than the upper surface of the mounting plate 4. A protrusion 16 is provided on the rear cover 2.

[0027] When the back cover 2 rotates, the protrusion 16 rotates and presses against the clamping block 7, causing the clamping block 7 to drive the pressing rod 10 to move down along the receiving groove 13. The pressing block 5 on the pressing rod 10 moves down accordingly, allowing the limiting block 14 to pass through the pressing block 5 more easily, preventing the pressing rod 10 from breaking due to uneven force. As the back cover 2 rotates, the protrusion 16 moves away from the clamping block 7, and the elastic pad 12 pushes the pressing rod 10 upward, so that the pressing block 5 and the limiting block 14 return to the same height. After being limited by the pressing block 5, the limiting block 14 will not easily rotate back.

[0028] Reinforcing plates 11 are fixedly provided on both sides of the pressing rod 10. The width of the reinforcing plates 11 increases towards one side of the receiving groove 13. When the pressing rod 10 is subjected to force, the reinforcing plates 11 can disperse the force on the pressing block 5, making the pressing rod 10 less prone to breakage. A groove 3 is provided on the side of the back cover 2 away from the outer shell 1. The groove 3 facilitates the application of force to the back cover 2, making the rotation of the back cover 2 easier and more convenient.

[0029] The implementation principle of this embodiment is as follows: When in use, the limiting buckle 15 on the back cover 2 is aligned with the guide port 9 and inserted into the guide port 9. Then, the back cover 2 is rotated together with the groove 3. The limiting buckle 15 rotates from the guide port 9 into the limiting port 8. After being limited by the limiting port 8, the limiting buckle 15 is fastened to the mounting plate 4. At the same time, the protrusion 16 rotates and first presses against the pressing block 7, so that the pressing block 7 drives the pressing rod 10 to move down. The pressing block 5 on the pressing rod 10 moves down accordingly. The limiting block 14 slides along the inclined surface of the pressing block 5 until the limiting block 14 slides to the other side of the pressing block 5. At this time, the pressing block 5 and the limiting block 14 press against each other, so that the back cover 2 no longer rotates easily.

[0030] During disassembly, the rear cover 2 is rotated in the opposite direction through the groove 3, so that the protrusion 16 presses against the pressing block 7 again. The pressing rod 10 drives the pressing block 5 to descend. After the limit block 14 is released, it rotates to the other side of the pressing block 5. At the same time, the limit buckle 15 slides from the limit port 8 to the guide port 9. At this time, the rear cover 2 can be pulled out, thus completing the quick disassembly between the rear cover 2 and the outer shell 1.

[0031] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A knock-type switch based on the piezoelectric induction principle, comprising a housing (1) and a back cover (2), characterized in that: An installation plate (4) is fixedly installed in the outer shell (1). The installation plate (4) is provided with a limiting port (8) and a guide port (9). The limiting port (8) and the guide port (9) are connected. The width of the limiting port (8) is smaller than the width of the guide port (9). A limiting buckle (15) is fixedly installed on the rear cover (2). The limiting buckle (15) slides in the guide port (9). A pressing port (6) is opened on the installation plate (4). A pressing rod (10) is provided on the installation plate (4). One end of the pressing rod (10) is connected to... On the mounting plate (4), the other end of the pressing rod (10) extends into the pressing port (6). The pressing rod (10) is fixedly provided with a pressing block (5) on one side of the pressing port (6). An inclined surface is provided on one side of the pressing block (5). A limiting block (14) is fixedly provided on the back cover (2). When the back cover (2) is closed on the outer shell (1) and rotates, the limiting buckle (15) slides from the guide port (9) into the limiting port (8). The limiting block (14) slides along the inclined surface of the pressing block (5) to the other side of the pressing block (5).

2. A tapping switch based on the piezoelectric induction principle according to claim 1, characterized in that: The mounting plate (4) has a receiving groove (13), and an elastic pad (12) is fixedly provided at the bottom of the receiving groove (13). The pressing rod (10) is fixedly connected to the elastic pad (12). A pressing block (7) is fixedly provided on one side of the pressing rod (10) located in the receiving groove (13). The other end of the pressing block (7) is higher than the upper surface of the mounting plate (4). A protrusion (16) is provided on the back cover (2). When the protrusion (16) abuts against the pressing block (7), the pressing rod (10) is pressed down.

3. A tapping switch based on the piezoelectric induction principle according to claim 1, characterized in that: The pressing rod (10) is fixedly provided with reinforcing plates (11) on both sides, and the width of the reinforcing plates (11) increases towards one side of the receiving groove (13).

4. A tapping switch based on the piezoelectric induction principle according to claim 1, characterized in that: The rear cover (2) has a groove (3) on the side away from the outer shell (1).

Images