Push switch

Abstract

The utility model relates to the technical field of switches, in particular to a push switch, which comprises a base, an elastic piece connected to the base, a shell unit correspondingly jointed with the base, an electric connection unit arranged between the base and the shell unit, and a movable unit sleeved on the shell unit and propped against the electric connection unit, the electric connection unit comprises a movable piece and a plurality of terminals, the movable piece is connected with an elastic piece, the terminals are installed on the shell unit, the base is provided with a containing cavity used for limiting rotation of the movable piece, the movable piece is provided with a first contact, one end, coinciding with the movable piece, of each terminal is provided with a second contact, and the second contact is connected with the movable piece. And the first contact is abutted against the second contact. According to the utility model, the rotation of the contact piece can be limited, the friction between the contact piece and the terminal is reduced, and the service life of the switch is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of switches, in particular to a push switch. Background Art

[0002] An existing push switch includes a base, a shell corresponding to the base, a contact piece installed between the base and the shell, a spring that pushes against the contact piece and is connected to the base, a rotating seat sleeved on the contact piece, a button sleeved on the rotating seat, and two terminals symmetrically positioned on the shell corresponding to the contact piece. The shell, the button and the rotating seat are all provided with a plurality of mutually matching inclined surface structures. When the button is pressed, the rotating seat rotates under the action of the spring elastic force and the inclined surface guidance, so that the relative position of the rotating seat and the shell changes, thereby changing the position of the contact piece.

[0003] Among them, Figure 1 As shown, the contact piece is circular, and a plurality of convex bumps for contacting the terminal are arranged circumferentially on the contact piece. By pressing the button, the contact piece and the terminal can be in contact or disconnected. However, when the button is pressed, the rotating seat can rotate relative to the button, and the rotating seat may drive the contact piece to rotate relative to the terminal at the same time, resulting in friction between the contact piece and the terminal. The friction will cause the risk of sparks between the contact piece and the terminal, thereby affecting the performance of the switch. After long-term use, the friction and wear between the contact piece and the terminal will shorten the service life of the switch. Utility Model Content

[0004] In order to limit the rotation of the contact piece, reduce the friction between the contact piece and the terminal, and extend the service life of the switch, the present application provides a push switch.

[0005] In order to achieve the above purpose, this application adopts the following technical solutions:

[0006] A push switch comprises a base, an elastic member connected to the base, a shell unit correspondingly engaged with the base, an electrical connection unit installed between the base and the shell unit, and a movable unit sleeved on the shell unit and abutting against the electrical connection unit; the electrical connection unit comprises a movable piece and a plurality of terminals, the movable piece is connected to the elastic member, the terminals are installed on the shell unit, the base is provided with a receiving cavity for limiting the rotation of the movable piece, the movable piece is provided with a first contact, the terminal is provided with a second contact at one end overlapping with the movable piece, and the first contact abuts against the second contact; the movable unit comprises a button and a rotating seat, the button is movably inserted into the shell unit, the bottom of the rotating seat abuts against the movable piece, and the top of the rotating seat is sleeved on the button and abuts against the button.

[0007] By adopting the above device, when the user presses the button, the button pushes the movable plate to move up and down in the accommodating cavity through the rotating seat, so that the first contact and the second contact are in point-to-point contact or disconnected, thereby realizing the on-off control of the circuit, ensuring the stability of the circuit, and reducing the occurrence of poor contact. Since the accommodating cavity limits the rotation of the movable plate, the friction between the movable plate and the terminal is reduced, the risk of sparks between the movable plate and the terminal is avoided, the performance of the switch is improved, and the service life of the switch is extended.

[0008] Preferably, the first contact is welded to the moving piece, and the second contact is welded to the terminal.

[0009] By adopting the above-mentioned device, welding can be used to ensure stability and good conductivity between contacts. At the same time, contacts of different materials can be connected to the moving piece and the terminal by welding, thereby reducing production costs. Compared with the integrated stamping method, the welding method in this application is conducive to reducing production costs.

[0010] Preferably, a thickness ratio of the moving piece to the first contact is 1:1.5, and a thickness ratio of the terminal to the second contact is 1:1.5.

[0011] By adopting the above device, the thickness of the first contact is greater than the thickness of the moving piece, and the thickness of the second contact is greater than the thickness of the terminal, which can optimize the performance of the electrical connection, reduce resistance, and improve the current transmission efficiency.

[0012] Preferably, the movable piece is in the shape of an elongated strip, and two terminals are provided, and the two terminals are symmetrically arranged on both sides of the movable piece.

[0013] By adopting the above device, the terminals are symmetrically arranged on both sides of the moving piece, which helps to maintain the balance of the moving piece during the pressing process, so that the contact force between the moving piece and the terminal is evenly distributed, avoiding deviation or damage caused by uneven force, thereby improving the stability and reliability of the contact. In addition, the long strip moving piece is confined in the accommodating cavity, reducing the rotation of the moving piece.

[0014] Preferably, an arch is formed in the middle of the moving plate from bottom to top, a cylinder is provided on the arch, the elastic member extends into the cylinder and abuts against the cylinder, and the outer peripheral surface of the cylinder is sleeved on the rotating seat.

[0015] By adopting the above device, an arch is formed in the middle of the moving piece, and the positions of the terminals on both sides of the moving piece are lower than the middle of the moving piece, so that when the switch is disconnected, a certain space is formed between the first contact on the moving piece and the second contact on the terminal, and the phenomenon of accidental contact between the first contact and the second contact will not occur, thereby ensuring the accuracy of switch control.

[0016] Preferably, the cylinder portion and the arch portion are separately arranged, the arch portion is provided with a mounting hole, the bottom of the cylinder portion is provided with a convex edge, the cylinder portion passes through the mounting hole, and the convex edge abuts against the arch portion.

[0017] By adopting the above device, the separate arrangement of the barrel and the arch provides more design flexibility, and the barrel can be manufactured and assembled separately according to different requirements, thereby reducing production costs.

[0018] Preferably, a notch is formed on the edge of the moving plate, and a limiting column is provided on a side of the housing unit close to the moving plate, and the limiting column abuts against the notch.

[0019] Preferably, a limit strip is provided in the accommodating cavity, and the limit strip abuts against the movable plate to guide the movable plate to move in a direction approaching or away from the terminal.

[0020] By adopting the above device, the limiting column abuts against the notch to limit the rotation of the movable plate. At the same time, the limiting strip in the accommodating cavity limits the rotation of the movable plate by abutting against the side of the movable plate. The double restriction of the movable plate by the limiting column and the limiting strip reduces the rotation of the movable plate and enhances the stability of the movable plate during switch operation.

[0021] This application has the following beneficial effects:

[0022] 1. In this application, when the user presses the button, the button pushes the moving piece to move up and down in the accommodating cavity through the rotating seat, so that the first contact and the second contact are in point-to-point contact or disconnected, thereby realizing the on-off control of the circuit, ensuring the stability of the circuit, and reducing the occurrence of poor contact. Since the accommodating cavity limits the rotation of the moving piece, the friction between the moving piece and the terminal is reduced, the risk of sparks between the moving piece and the terminal is avoided, the performance of the switch is improved, and the service life of the switch is extended.

[0023] 2. In the present application, the limit column abuts against the notch to limit the rotation of the movable plate. At the same time, the limit bar in the accommodating cavity limits the rotation of the movable plate by abutting against the side of the movable plate. The double restriction of the movable plate by the limit column and the limit bar reduces the rotation of the movable plate and enhances the stability of the movable plate during switch operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the existing push switch contact piece and terminal;

[0025] Figure 2 This is an exploded view of the overall structure of the push switch of the first embodiment of the utility model;

[0026] Figure 3 It is a schematic diagram of an electrical connection unit of a push switch according to a first embodiment of the utility model;

[0027] Figure 4 It is a schematic diagram of a housing unit and terminals of a push switch according to a first embodiment of the utility model;

[0028] Figure 5 It is an exploded view of the moving piece in the electrical connection unit of the push switch according to the second embodiment of the utility model.

[0029] Description of reference numerals:

[0030] 1. Base; 11. Elastic member; 12. Accommodating cavity; 13. Limiting strip; 2. Shell unit; 21. Limiting column; 3. Electrical connection unit; 31. Moving piece; 311. First contact; 312. Arch; 312a. Mounting hole; 313. Cylinder; 313a. Protruding edge; 314. Notch; 32. Terminal; 321. Second contact; 4. Movable unit; 41. Button; 42. Rotating seat; 5. Contact piece; 51. Convex bump. DETAILED DESCRIPTION

[0031] The following is combined with Figure 2-5 This application is described in further detail.

[0032] Example:

[0033] A push switch, such as Figure 2-3 As shown, it includes a base 1, an elastic member 11 connected to the base 1, a housing unit 2 correspondingly engaged with the base 1, an electrical connection unit 3 installed between the base 1 and the housing unit 2, and a movable unit 4 sleeved on the housing unit 2 and abutting against the electrical connection unit 3. Among them, the electrical connection unit 3 includes a moving piece 31 and a plurality of terminals 32. The moving piece 31 is connected to the elastic member 11 and is responsible for displacement when the button 41 is pressed, thereby realizing the on-off function of the switch. The terminal 32 is installed on the housing unit 2 and is used to connect to an external circuit. The base 1 is provided with a receiving cavity 12 for limiting the rotation of the rotating piece 31, so that unnecessary rotation of the moving piece 31 during the pressing process can be reduced, the friction between the moving piece 31 and the terminal 32 can be reduced, and the performance and service life of the switch can be improved. A first contact 311 is provided on the moving piece 31, and a second contact 321 is provided on the end of the terminal 32 that overlaps with the moving piece 31. The first contact 311 abuts against the second contact 321 to realize the transmission of electrical signals. In this embodiment, the elastic member 11 is a spring.

[0034] like Figure 2As shown, in this embodiment, the movable unit 4 includes a button 41 and a rotating seat 42. The button 41 is provided through the housing unit 2 and is the main component operated by the user. The user controls the switch by pressing the button 41. The bottom of the rotating seat 42 abuts against the moving piece 31, and the top is sleeved on the button 41 and abuts against the button 41. When the button 41 is pressed, the rotating seat 42 transmits force to the moving piece 31, causing it to move up and down, thereby realizing the on and off of the switch.

[0035] like Figure 2-3 As shown, in this embodiment, the thickness ratio of the moving piece 31 to the first contact 311 is 1:1.5, and the thickness ratio of the terminal 32 to the second contact 321 is 1:1.5. The thickness of the first contact 311 is greater than the thickness of the moving piece 31, and the thickness of the second contact 321 is greater than the thickness of the terminal 32, which is conducive to improving the conductivity and durability of the switch, optimizing the performance of the circuit connection, reducing resistance, and improving the current transmission efficiency.

[0036] like Figure 2-3 As shown, in this embodiment, the shape of the movable piece 31 is a long strip, and the number of the terminals 32 is set to two. Among them, the two terminals 32 are symmetrically distributed on both sides of the movable piece 31. This method can ensure that the movable piece 31 maintains good contact with the two terminals 32 during the up and down movement, thereby improving the stability and reliability of the switch. In addition, the long strip movable piece 31 abuts against the accommodating cavity 12 and is not easy to rotate, which is conducive to maintaining the stability of the movable piece 31 during the pressing process and reducing the friction between the movable piece 31 and the terminal 32.

[0037] like Figure 2-3 As shown, in order to reduce the phenomenon of false touch and realize the precise control of the switch, an arch 312 is formed in the middle of the movable piece 31, and a barrel 313 is formed on the arch 312 by stamping. Among them, the upper end of the elastic member 11 extends into the barrel 313, and the outer peripheral surface of the barrel 313 is sleeved on the rotating seat 42. The arch 312 on the movable piece 31 makes the two sides of the movable piece 31 welded with the first contact 311 lower than the middle part. When the switch is in the off state, there will be a gap between the first contact 311 on the movable piece 31 and the second contact 321 on the terminal 32, so that the first contact 311 will not touch the second contact 321 by mistake, which effectively improves the accuracy of switch control.

[0038] like Figure 3As shown, in this embodiment, in order to reduce production costs, the first contact 311 is welded to the moving piece 31, and the second contact 321 is welded to the terminal 32. The welding method can ensure the stability of the contact point and good conductivity. At the same time, compared with the overall stamping method, the welding method can more flexibly select the materials of the first contact 311 and the second contact 321. For example, the first contact 311 and the second contact 321 can be selected as silver contacts or copper contacts, which can not only improve the current transmission efficiency, but also control the production cost.

[0039] like Figure 2-4 As shown, in order to limit the rotation of the movable piece 31, four notches 314 are formed on the edge of the movable piece 31, and four limiting posts 21 are provided on the side of the housing unit 2 close to the movable piece 31. The limiting posts 21 abut against the notches 314, so as to ensure that the movable piece 31 will not deflect or move excessively during the up and down movement, thereby improving the stability and safety of the switch. In addition, two limiting bars 13 are further provided in the accommodating cavity 12, and the two limiting bars 13 abut against the two side edges of the movable piece 31, respectively, for guiding the movable piece 31 to move in the direction close to or away from the terminal 32, and further limiting the rotation of the movable piece 31.

[0040] Working principle: When the user presses the button 41, the button 41 pushes the movable plate 31 to move up and down in the accommodating cavity 12 through the rotating seat 42, and the movable plate 31 is simultaneously acted upon by the elastic force of the elastic member 11 and acts on the rotating seat 42, causing the rotating seat 42 to rotate. At this time, the relative position of the rotating seat 42 and the housing unit 2 changes, thereby changing the position of the movable plate 31, and realizing the contact and disconnection of the first contact 311 and the second contact 321. However, since the movable plate 31 in the present application is in the shape of a long strip and is restricted by the limit column 21 and the limit bar 13, the movable plate 31 does not rotate, which effectively reduces the friction between the movable plate 31 and the terminal 32, and improves the performance of the switch.

[0041] Example 2

[0042] like Figure 5 As shown, the difference between Example 2 of the present application and Example 1 is that, in this embodiment, the barrel 313 and the arch 312 are separately arranged. Among them, a convex edge 313a is arranged at the bottom of the barrel 313, and a mounting hole 312a is opened in the middle of the arch 312. The barrel 313 passes through the mounting hole 312a, and the convex edge 313a abuts against the bottom surface of the arch 312. This separate design allows the barrel 313 to be manufactured separately and different manufacturing materials can be selected, which is conducive to reducing production costs.

[0043] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A push switch, characterized in that: The device comprises a base (1), an elastic member (11) connected to the base (1), a housing unit (2) correspondingly engaged with the base (1), an electrical connection unit (3) installed between the base (1) and the housing unit (2), and a movable unit (4) sleeved on the housing unit (2) and abutting against the electrical connection unit (3); The electrical connection unit (3) comprises a moving piece (31) and a plurality of terminals (32), the moving piece (31) being connected to an elastic member (11), the terminals (32) being mounted on the housing unit (2), the base (1) being provided with a receiving cavity (12) for limiting the rotation of the moving piece (31), the moving piece (31) being provided with a first contact point (311), and the terminal (32) being provided with a second contact point (321) at one end overlapping with the moving piece (31), the first contact point (311) being in abutment with the second contact point (321); The movable unit (4) comprises a button (41) and a rotating seat (42); the button (41) is movably arranged in the housing unit (2); the bottom of the rotating seat (42) abuts against the movable plate (31); and the top of the rotating seat (42) is sleeved on the button (41) and abuts against the button (41).

2. A push switch according to claim 1, characterized in that: The first contact (311) is welded to the moving piece (31), and the second contact (321) is welded to the terminal (32).

3. A push switch according to claim 2, characterized in that: The thickness ratio of the moving piece (31) to the first contact (311) is 1:1.5, and the thickness ratio of the terminal (32) to the second contact (321) is 1:1.

5.

4. A push switch according to claim 3, characterized in that: The movable plate (31) is in the shape of a long strip, and two terminals (32) are provided, and the two terminals (32) are symmetrically arranged on both sides of the movable plate (31).

5. A push switch according to claim 1, characterized in that: An arch portion (312) is formed in the middle of the movable plate (31) from bottom to top, and a cylinder portion (313) is provided on the arch portion (312). The elastic member (11) extends into the cylinder portion (313) and abuts against the cylinder portion (313). The outer peripheral surface of the cylinder portion (313) is sleeved on the rotating seat (42).

6. A push switch according to claim 5, characterized in that: The barrel (313) and the arch (312) are arranged separately; the arch (312) is provided with a mounting hole (312a); a convex edge (313a) is provided at the bottom of the barrel (313); the barrel (313) passes through the mounting hole (312a); and the convex edge (313a) abuts against the arch (312).

7. The push switch according to claim 1, characterized in that: A notch (314) is formed on the edge of the moving plate (31), and a limiting column (21) is provided on a side of the housing unit (2) close to the moving plate (31), wherein the limiting column (21) abuts against the notch (314).

8. The push switch according to claim 1, characterized in that: A limit strip (13) is provided in the accommodating cavity (12), and the limit strip (13) abuts against the movable plate (31) and is used to guide the movable plate (31) to move in a direction approaching or away from the terminal (32).

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