Non-contact dial wheel switch

Abstract

The utility model discloses a non-contact dial wheel switch, which comprises a plastic base and a plastic shell, symmetrical male buckles are arranged on two sides of the bottom of the shell, vertical through rectangular grooves are arranged on two sides of the base, female buckles are arranged in the rectangular grooves, the male buckles and the female buckles are matched and clamped, a support is arranged on the upper side of the base, and the support is arranged on the lower side of the base. A rotatable rotating body is installed in the support, a poking wheel is installed on the rotating body, a through rectangular hole is formed in the upper portion of the shell, the top of the poking wheel extends upwards from the rectangular hole, the support is of a U-shaped structure, four symmetrical inserting holes are formed in the four corners of the bottom of the support respectively, four inserting columns are arranged on the upper side of the base respectively, and the inserting columns are inserted into the inserting holes respectively. And the inserting columns and the inserting holes are inserted in a one-to-one correspondence mode, and a magnet block is installed at the bottom of the rotating body in an embedded mode. The support is positioned and installed on the base through the inserting column, the rotating body is installed in the support, the shifting wheel is installed on the rotating body, the shell and the base are connected through the buckle, assembly and disassembly are very convenient, and the structure is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of switches, in particular to a non-contact dial switch. Background Technique

[0002] The magnetosensitive non-contact switch is a device that uses the principle of magnetic field induction to achieve signal conversion and transmission. When the sensed object approaches or moves away from the induction coil, due to the change in the magnetic attraction of the sensed object itself, the function of the switch is realized. The magnetosensitive non-contact switch is mainly applied to fields such as magnetic field measurement, metal object detection, and position detection. For the non-contact dial switch, screws are mostly used to connect and fix the housing and various parts, and the assembly and disassembly are not convenient enough. Content of the Utility Model

[0003] The purpose of the utility model is to provide a non-contact dial switch to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A non-contact dial switch, including a base and a housing made of plastic material. Symmetrical male buckles are arranged on both sides of the bottom of the housing. Vertical through rectangular grooves are arranged on both sides of the base, and female buckles are arranged in the rectangular grooves. The male buckles are adaptively clamped with the female buckles. A bracket is installed on the upper side of the base, a rotatable rotating body is installed in the bracket, a dial is installed on the rotating body, a through rectangular hole is arranged in the upper part of the housing, the top of the dial extends upward from the rectangular hole, and a plurality of card slots are distributed along the circumference on the outer side of the dial. Integrally formed pawls are arranged on both sides of the housing, and the upper ends of the pawls are clamped into the card slots to position the dial. The bracket is of a U-shaped structure, and four symmetrical jacks are respectively arranged at the four corners of the bottom of the bracket. Four insertion posts are respectively arranged on the upper side of the base, and the insertion posts are inserted into the jacks one by one. A magnet block is embedded and installed at the bottom of the rotating body.

[0005] Preferably, a protruding dial button is arranged in the middle of the outer side of the dial.

[0006] Preferably, a PCB board is encapsulated in the bottom inner cavity of the base, and a magnetic sensor is installed on the PCB board.

[0007] Compared with the prior art, the beneficial effect of the utility model is that the bracket is positioned and installed on the base through the insertion posts. The rotating body is installed in the bracket and the dial is installed on the rotating body. The housing and the base are connected by buckles, and the assembly and disassembly are very convenient and the structure is simple. Brief Description of the Drawings

[0008] Figure 1 It is an exploded structural schematic diagram of the utility model;

[0009] Figure 2It is a schematic cross-sectional structure diagram of the base.

[0010] In the figure: 1. Base; 2. Bracket; 3. Dial; 4. Shell; 5. Plug post; 6. Jack; 7. Female buckle; 8. Male buckle; 9. PCB board; 10. Pawl. Specific implementation manner

[0011] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0012] Please refer to Figure 1-2 , the present invention provides a technical solution: a non-contact dial switch, including a base 1 and a shell 4 made of plastic material. Symmetric male buckles 8 are provided on both sides of the bottom of the shell 4. Vertical through rectangular grooves are provided on both sides of the base 1, and female buckles 7 are provided in the rectangular grooves. The male buckles 8 are adapted and clamped with the female buckles 7, which is convenient for assembly and disassembly. A bracket 2 is installed on the upper side of the base 1. The bracket 2 is made of metal and has a U-shaped structure. A rotatable rotating body is installed in the bracket 2. A reset torsion spring is provided between the rotating body and the bracket 2. A dial 3 is installed on the rotating body. The dial 3 is arc-shaped, and a protruding dial button is provided in the middle of the outer side of the dial 3.

[0013] A through rectangular hole is provided in the upper part of the shell 4, and the top of the dial 3 extends upward from the rectangular hole. A plurality of card slots are distributed along the circumference on the outer side of the dial 3. Pawls 10 are integrally formed on both sides of the shell 4. The pawls 10 have a certain elasticity. The upper ends of the pawls 10 are clamped into the card slots to apply a certain clamping force to the dial 3 to achieve positioning, so that the position where the dial 3 stops can be maintained after rotation. Four symmetric jacks 6 are respectively provided at the four corners of the bottom of the bracket 2, and four plug posts 5 are respectively provided on the upper side of the base 1. The plug posts 5 are inserted into the jacks 6 one by one. A magnet block is embedded and installed at the bottom of the rotating body. The bottom inner cavity of the base 1 is encapsulated with a PCB board 9, and a magnetic sensor is installed on the PCB board 9. Rotating the dial 3 can adjust the distance between the magnet block and the PCB board 9, and then the magnetic sensor can detect the change of the magnetic field to achieve on-off control.

[0014] Working principle: The bracket 2 is positioned and installed on the base 1 through the plug posts 5. A rotating body is installed in the bracket 2 and a dial 3 is installed on the rotating body. The shell 4 and the base 1 are connected through buckles (including male buckles 8 and female buckles 7), and the assembly and disassembly are very convenient. The dial 3 is positioned by the pawls 10 on both sides of the shell 4 to maintain the angle after rotation.

[0015] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A non-contact thumbwheel switch, comprising a base (1) and a housing (4) made of plastic, characterized in that: Symmetrical male buckles (8) are provided on both sides of the bottom of the shell (4); vertical through rectangular grooves are provided on both sides of the base (1); female buckles (7) are provided in the rectangular grooves; the male buckles (8) are adapted to be snap-fitted with the female buckles (7); a bracket (2) is installed on the upper side of the base (1); a rotatable swivel is installed in the bracket (2); a thumbwheel (3) is installed on the swivel; a through rectangular hole is provided on the upper part of the shell (4); the top of the thumbwheel (3) extends upward from the rectangular hole. The outer side of the dial wheel (3) is provided with a plurality of slots distributed along the circumference, and the two sides of the shell (4) are provided with integrated ratchet pawls (10), and the upper ends of the ratchet pawls (10) are inserted into the slots to position the dial wheel (3). The bracket (2) is a U-shaped structure, and the four corners of the bottom of the bracket (2) are respectively provided with four symmetrical plug holes (6), and the upper side of the base (1) is respectively provided with four plug posts (5), and the plug posts (5) are plugged into the plug holes (6) one by one, and a magnet block is embedded and installed at the bottom of the swivel.

2. A non-contact thumbwheel switch according to claim 1, characterized in that: A protruding dial button is provided at the middle part of the outer side of the dial wheel (3).

3. A non-contact thumbwheel switch according to claim 2, characterized in that: A PCB board (9) is encapsulated in the bottom inner cavity of the base (1), and a magnetic sensor is mounted on the PCB board (9).

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