A rotary switch with a seesaw-type on-off structure

Abstract

The utility model discloses a rotary switch with a seesaw-type on-off structure, including a PCB board, which is provided with a rotating hole; a rotating shaft, which is rotatably matched with the rotating hole, and a trigger rod protruding outwardly from the side; a seesaw, which is provided with a first moving contact at one end and a second moving contact at the other end, and the free end of the trigger rod abuts against the seesaw; an intermediate conductive sheet, which is provided on the PCB board and is provided with a notch for installing the seesaw; a first conductive sheet, which is provided on the left side of the intermediate conductive sheet and is provided with a first static contact; and a second conductive sheet, which is provided on the right side of the intermediate conductive sheet and is provided with a second static contact. Compared with the prior art, since the first conductive sheet and the second conductive sheet are simpler in structure and shape than the wavy static contact sheet, the insulating seat can be omitted, which is beneficial to saving the overall occupied space of the product. On the other hand, the rotating shaft, the intermediate conductive sheet, the first conductive sheet, and the second conductive sheet are directly provided on the PCB board, thereby facilitating the integrated circuit layout.

Description

Technical Field

[0001] The utility model relates to the technical field of knob switches, in particular to a knob switch with a seesaw type on-off structure. Background Art

[0002] A switch is a component that controls the operation or stop of electrical appliances and mechanical equipment. A knob switch is a type of switch. The knob switch switches between different circuits by rotating the contacts that switch conduction.

[0003] In the prior art, a rotating cam drives a movable contact on its periphery to cooperate with a wavy stationary contact piece, and the wavy stationary contact piece needs to be equipped with an insulating seat for fixing, which is not conducive to an integrated circuit layout. Utility Model Content

[0004] In order to overcome the shortcomings and deficiencies in the prior art, the utility model aims to provide a knob switch with a seesaw type on-off structure.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A rotary switch with a seesaw-type on-off structure, comprising:

[0007] The PCB board is provided with a rotation hole;

[0008] A rotating shaft is rotatably matched with the rotating hole, and a trigger rod is protruding outwardly from the side;

[0009] A seesaw, with a first moving contact at one end and a second moving contact at the other end, and the free end of the trigger rod abuts against the seesaw;

[0010] An intermediate conductive sheet is disposed on the PCB board and is provided with a notch for installing the seesaw;

[0011] A first conductive sheet, disposed on the left side of the middle conductive sheet, and provided with a first static contact;

[0012] The second conductive sheet is arranged on the right side of the middle conductive sheet and is provided with a second static contact.

[0013] Preferably, a pair of trigger rods are provided, and the pair of trigger rods are symmetrically arranged with the central axis of the PCB board as the symmetry axis; a pair of seesaws are provided, and one end of the other seesaw is provided with a third moving contact and the other end is provided with a fourth moving contact; a pair of intermediate conductive sheets are provided, and the pair of intermediate conductive sheets are symmetrically arranged with the central axis of the PCB board as the symmetry axis; and also include: a third conductive sheet, the third conductive sheet is provided on the left side of the other intermediate conductive sheet and is provided with a third static contact; and a fourth conductive sheet, the fourth conductive sheet is provided on the right side of the other intermediate conductive sheet and is provided with a fourth static contact.

[0014] Preferably, the seesaw includes a V-shaped connecting sheet body, and a first swing arm and a second swing arm symmetrically arranged on the connecting sheet body, the first moving contact is arranged on the first swing arm, and the second moving contact is arranged on the second swing arm; the notch includes a first overlapping portion and a second overlapping portion that are symmetrical on both sides, the connecting sheet body is located between the first overlapping portion and the second overlapping portion, the first swing arm is arranged on the first overlapping portion, and the second swing arm is arranged on the second overlapping portion.

[0015] Preferably, the inner angle of the connecting plate body is 140°-150°.

[0016] Preferably, it also includes:

[0017] The input terminal is arranged on the PCB board and is used for connecting to the power supply.

[0018] Preferably, the input terminal includes an N terminal and an L terminal.

[0019] Preferably, it also includes:

[0020] The hollow upper cover is provided with a through hole, the top end of the rotating shaft passes through the through hole, and the end thereof is exposed outside the hollow upper cover; the hollow upper cover is arranged on the PCB board and can cover the seesaw, the middle conductive sheet, the first conductive sheet and the second conductive sheet.

[0021] Preferably, it also includes:

[0022] A steel ball, a mounting hole is formed at the free end of the trigger rod, the steel ball is arranged at the outer end of the mounting hole, an elastic member is arranged in the mounting hole, the inner end of the elastic member is against the mounting hole, and the outer end acts on the steel ball.

[0023] The beneficial effect of the utility model is that the rotation of the rotating shaft drives the trigger rod to swing along the axis of the rotating shaft, so that the seesaw is acted on by the swinging action of the trigger rod. When the trigger rod swings to the left, the free end of the trigger rod acts on one end of the seesaw and makes the first moving contact and the first static contact contact-connected, thereby realizing the conduction of the first circuit. When the trigger rod is reset and swings to the right, the free end of the trigger rod acts on the other end of the seesaw and makes the second moving contact and the second static contact contact-connected, thereby realizing the conduction of the second circuit. Compared with the prior art, since the first conductive sheet and the second conductive sheet are simpler in structure and shape than the wavy static contact sheet, the insulating seat can be omitted, which is beneficial to saving the overall occupied space of the product. On the other hand, the rotating shaft, the middle conductive sheet, the first conductive sheet, and the second conductive sheet are directly arranged on the PCB board, which facilitates the integrated circuit layout. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0025] Figure 2 It is a schematic diagram of a hidden hollow upper cover in an embodiment of the utility model;

[0026] Figure 3 It is a schematic structural diagram of a seesaw according to an embodiment of the present invention.

[0027] As shown in the figure:

[0028] 1-PCB board, 12-input terminal, 121-N terminal, 122-L terminal, 13-hollow cover, 131-perforation;

[0029] 2-rotating shaft, 21-trigger rod, 22-steel ball;

[0030] 3-rocker, 31-connecting sheet, 311-top, 32-first swing arm, 33-second swing arm, 34-first moving contact, 35-second moving contact, 36-third moving contact, 37-fourth moving contact;

[0031] 4-middle conductive sheet, 41-notch, 411-first overlapping portion, 412-second overlapping portion;

[0032] 5-first conductive sheet, 51-first static contact;

[0033] 6-second conductive sheet, 62-second static contact;

[0034] 7-third conductive sheet, 71-third static contact;

[0035] 8- fourth conductive sheet, 81- fourth static contact. DETAILED DESCRIPTION

[0036] The following is a detailed explanation of the implementation of the present invention in conjunction with the accompanying drawings. The accompanying drawings are for reference and illustration only and do not constitute a limitation on the scope of patent protection of the present invention.

[0037] See also Figure 1-Figure 3 In this embodiment, a rotary switch with a seesaw 3-type on-off structure includes:

[0038] The PCB board 1 is provided with a rotation hole;

[0039] The rotating shaft 2 is rotatably matched with the rotating hole, and a trigger rod 21 is protruding outward from the side;

[0040] The seesaw 3 has a first moving contact 34 at one end and a second moving contact 35 at the other end, and the free end of the trigger rod 21 abuts against the seesaw 3;

[0041] The middle conductive sheet 4 is arranged on the PCB board 1 and has a notch 41 for installing the seesaw 3;

[0042] The first conductive sheet 5 is disposed on the left side of the middle conductive sheet 4 and is provided with a first static contact 51;

[0043] The second conductive sheet 6 is disposed on the right side of the middle conductive sheet 4 and is provided with a second static contact 62 .

[0044] In this embodiment, the rotation of the rotating shaft 2 drives the trigger rod 21 to swing along the axis of the rotating shaft 2, so that the rocker 3 is acted on by the swinging action of the trigger rod 21. When the trigger rod 21 swings to the left, the free end of the trigger rod 21 acts on one end of the rocker 3 and makes the first moving contact 34 and the first static contact 51 contact-connected, thereby realizing the conduction of the first circuit. When the trigger rod 21 is reset and swings to the right, the free end of the trigger rod 21 acts on the other end of the rocker 3 and makes the second moving contact 35 and the second static contact 62 contact-connected, thereby realizing the conduction of the second circuit. Further, a knob (not shown in the figure) is included, which is fixedly arranged at the outer end of the rotating shaft 2 to facilitate gear shifting.

[0045] Preferably, a pair of trigger rods 21 are provided, and the pair of trigger rods 21 are symmetrically arranged with the central axis of the PCB board 1 as the axis of symmetry; a pair of seesaws 3 are provided, and one end of the other seesaw 3 is provided with a third moving contact 36, and the other end is provided with a fourth moving contact 37; a pair of intermediate conductive sheets 4 are provided, and the pair of intermediate conductive sheets 4 are symmetrically arranged with the central axis of the PCB board 1 as the axis of symmetry; and also include: a third conductive sheet 7, which is provided on the left side of the other intermediate conductive sheet 4 and is provided with a third static contact 71; and a fourth conductive sheet 8, which is provided on the right side of the other intermediate conductive sheet 4 and is provided with a fourth static contact 81.

[0046] The present embodiment provides a three-speed adjustment mode, (1) automatic gear: when the rotating shaft 2 rotates in direction a, one trigger lever 21 acts on the first swing arm 32 to make the first moving contact 34 and the first static contact 51 contact and conduct, and at the same time, the other trigger lever 21 acts on the first swing arm 32 of the other seesaw 3 to make the third moving contact 36 and the third static contact 71 contact and conduct, thereby realizing the conduction of the first circuit; (2) disconnection gear: the rotating shaft 2 is twisted in the direction opposite to direction a, so that the pair of trigger levers 21 are respectively located at the connecting sheet 31 of the pair of seesaws 3, thereby realizing the disconnection of the first circuit and the second circuit; (3) manual gear: when the rotating shaft 2 rotates in direction b, one trigger lever 21 acts on the second swing arm 33 to make the second moving contact 35 and the second static contact 62 contact and conduct, and at the same time, the other trigger lever 21 acts on the second swing arm 33 of the other seesaw 3 to make the fourth moving contact 37 and the fourth static contact 81 contact and conduct, thereby realizing the conduction of the second circuit.

[0047] Preferably, the seesaw 3 includes a V-shaped connecting sheet body 31, and a first swing arm 32 and a second swing arm 33 symmetrically arranged on the connecting sheet body 31, the first moving contact 34 is arranged on the first swing arm 32, and the second moving contact 35 is arranged on the second swing arm 33; the notch 41 includes a left-right symmetrical first overlapping portion 411 and a second overlapping portion 412, the connecting sheet body 31 is located between the first overlapping portion 411 and the second overlapping portion 412, the first swing arm 32 is arranged on the first overlapping portion 411, and the second swing arm 33 is arranged on the second overlapping portion 412.

[0048] In this embodiment, the first overlapping portion 411 and the second overlapping portion 412 are both in a U-shape, and the front and rear sides of the connecting plate 31 are respectively extended with abutment tops 311, which abut against the inner sides of the first overlapping portion 411 and the second overlapping portion 412.

[0049] Preferably, the inner angle of the connecting plate 31 is 140°-150°. In this embodiment, the aforementioned angle is preferably 145°, and a larger inner angle is used to reduce the stroke required for the first swing arm 32 and the second swing arm 33 to swing.

[0050] Preferably, it also includes:

[0051] The input terminal 12 is provided on the PCB board 1 and is used for connecting to a power source.

[0052] Preferably, the input terminal 12 includes an N-pole terminal 121 and an L-pole terminal 122 .

[0053] Preferably, it also includes:

[0054] The hollow upper cover 13 is provided with a through hole 131, the top end of the rotating shaft 2 passes through the through hole 131, and the end thereof is exposed outside the hollow upper cover 13; the hollow upper cover 13 is covered on the PCB board 1 and can cover the rocker 3, the middle conductive sheet 4, the first conductive sheet 5 and the second conductive sheet 6.

[0055] Preferably, it also includes:

[0056] The steel ball 22 , the free end of the trigger rod 21 is provided with an assembly hole, the steel ball 22 is arranged at the outer end of the assembly hole, an elastic member is arranged in the assembly hole, the inner end of the elastic member is against the assembly hole, and the outer end acts on the steel ball 22 .

[0057] In this embodiment, when the trigger rod 21 swings, the steel ball 22 and the inner corner of the seesaw 3 are rolled together, and the elastic member is a spring.

[0058] The above disclosure is only a preferred embodiment of the present invention, which cannot be used to limit the scope of protection of the present invention. Therefore, equivalent changes made within the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. A rotary switch with a seesaw-type on-off structure, characterized in that: include: The PCB board is provided with a rotation hole; A rotating shaft is rotatably matched with the rotating hole, and a trigger rod is protruding outwardly from the side; A seesaw, with a first moving contact at one end and a second moving contact at the other end, and the free end of the trigger rod abuts against the seesaw; An intermediate conductive sheet is disposed on the PCB board and is provided with a notch for installing the seesaw; A first conductive sheet, disposed on the left side of the middle conductive sheet, and provided with a first static contact; The second conductive sheet is arranged on the right side of the middle conductive sheet and is provided with a second static contact.

2. The rotary switch with a seesaw-type on-off structure according to claim 1, characterized in that: A pair of trigger rods are provided, and the pair of trigger rods are symmetrically arranged with the central axis of the PCB board as the symmetry axis; a pair of seesaws are provided, and one end of the other seesaw is provided with a third moving contact and the other end is provided with a fourth moving contact; a pair of intermediate conductive sheets are provided, and the pair of intermediate conductive sheets are symmetrically arranged with the central axis of the PCB board as the symmetry axis; and further include: a third conductive sheet, which is arranged on the left side of the other intermediate conductive sheet and is provided with a third static contact; and a fourth conductive sheet, which is arranged on the right side of the other intermediate conductive sheet and is provided with a fourth static contact.

3. The rotary switch with a seesaw-type on-off structure according to claim 1, characterized in that: The seesaw includes a V-shaped connecting sheet, and a first swing arm and a second swing arm symmetrically arranged on the connecting sheet, the first moving contact is arranged on the first swing arm, and the second moving contact is arranged on the second swing arm; the notch includes a first overlapping portion and a second overlapping portion that are symmetrical on both sides, the connecting sheet is located between the first overlapping portion and the second overlapping portion, the first swing arm is arranged on the first overlapping portion, and the second swing arm is arranged on the second overlapping portion.

4. The rotary switch with a seesaw-type on-off structure according to claim 3, characterized in that: The inner angle of the connecting plate body is 140°-150°.

5. The rotary switch with a seesaw-type on-off structure according to claim 1, characterized in that: Also includes: The input terminal is arranged on the PCB board and is used for connecting to the power supply.

6. The rotary switch with a seesaw-type on-off structure according to claim 5, characterized in that: The input terminal includes an N terminal and an L terminal.

7. The rotary switch with a seesaw on-off structure according to claim 1, characterized in that: Also includes: The hollow upper cover is provided with a through hole, the top end of the rotating shaft passes through the through hole, and the end thereof is exposed outside the hollow upper cover; The hollow upper cover is disposed on the PCB board and can cover the seesaw, the middle conductive sheet, the first conductive sheet and the second conductive sheet.

8. The rotary switch with a seesaw-type on-off structure according to claim 1, characterized in that: Also includes: A steel ball, a mounting hole is formed at the free end of the trigger rod, the steel ball is arranged at the outer end of the mounting hole, an elastic member is arranged in the mounting hole, the inner end of the elastic member is against the mounting hole, and the outer end acts on the steel ball.

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