A metal push button switch

Abstract

A metal button switch, including metal shell, button seat, switch base and switch control assembly, the first through cavity is equipped with on the metal shell, the button seat is limitedly installed in the upper opening of the first through cavity and slides axially, the switch base is fixed in the lower opening of the first through cavity, the switch control assembly is matched between the button seat and the switch base, the switch control assembly includes button push shaft, circuit board and terminal row, the button push shaft is installed on the button seat to drive the button seat to slide axially, the circuit board is installed on the switch base, the upper surface of the circuit board is equipped with a touch switch, the touch switch is matched with the button seat, the terminal row includes a rubber shell and a plurality of terminals, the upper patch of the terminal is welded on the bottom surface of the circuit board, the lower part of the terminal is arranged in the plug-in cavity of the rubber shell, the second through cavity is arranged through on the switch base, and the rubber shell is matched in the second through cavity. The utility model discloses compact structure, stable and reliable performance, convenient wiring, convenient production.

Description

Technical Field

[0001] This utility model relates to the field of switch technology, specifically a metal push-button switch. Background Technology

[0002] Currently, a push-button switch refers to a switch that uses a button to actuate a transmission mechanism, causing the moving contact to connect or disconnect with the stationary contact, thus switching the circuit. Push-button switches are simple in structure and widely used control electrical appliances. In electrical automatic control circuits, they are used to manually send control signals to control contactors, relays, electromagnetic starters, etc. However, existing push-button switches require wires to be connected to the switch pins during wiring, which is cumbersome and inconvenient. Furthermore, the exposed pins result in a low level of protection, failing to meet the requirements for use in harsh environments. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a metal push button switch that is compact in structure, stable and reliable in performance, convenient in wiring, and has high production efficiency.

[0004] The technical solution adopted by this utility model to solve its technical problem is a metal push button switch, including a metal shell, a button base, a switch base, and a switch control component. The metal shell has a first through cavity. The button base is axially slidingly limited and installed at the upper opening of the first through cavity. The switch base is fixed at the lower opening of the first through cavity. The switch control component is fitted between the button base and the switch base. The switch control component includes a button push shaft, a circuit board, and a terminal block. The button push shaft is installed on the button base to drive the button base to slide axially. The circuit board is installed on the switch base. A tactile switch is provided on the upper surface of the circuit board. The tactile switch is fitted with the button base. The terminal block includes a housing and multiple terminals. The upper part of the terminal is soldered to the bottom surface of the circuit board. The lower part of the terminal is arranged side by side in the insertion cavity of the housing. A second through cavity is provided through the switch base. The housing fits into the second through cavity.

[0005] The advantages of the above technical solution are as follows: A terminal block connected to the circuit board is located at the lower part of the metal casing. During wiring, the user only needs to insert the connector into the casing to complete the wiring of the metal push-button switch, making wiring more convenient. Simultaneously, the circuit board structure with a tactile switch makes the overall structure compact. The casing allows for the rapid and reliable soldering of multiple terminals onto the circuit board. Furthermore, the use of surface mount soldering for the terminals results in higher assembly density on the circuit board, better conductivity, and stable and reliable performance. This enables high-speed, mass production with higher overall production efficiency. Additionally, by fitting the casing into the second through-cavity, double protection is provided for the lower part of the terminals, preventing contact and bending during transportation, ensuring reliability in use, and also enabling the positioning of the terminal block.

[0006] Furthermore, the metal push button switch also includes a flexible protective component, which is tightly installed in the first through cavity and is located between the push button base and the circuit board.

[0007] The advantages of adopting the above technical solution are: by setting up a flexible protective component, the button base can buffer the pressing of the tactile switch on the circuit board, and the flexible protective component also has a sealing function, which can prevent dust from entering and make the use of the circuit board safer.

[0008] Furthermore, the flexible protective component has a first pushing protrusion and a second pushing protrusion at the center of its upper and lower surfaces, respectively, and the first pushing protrusion has a first pushing recess. The button base has a third pushing protrusion at the center of its lower surface. The third pushing protrusion cooperates with the first pushing recess, and the second pushing protrusion cooperates with the tactile switch.

[0009] The advantages of the above technical solution are as follows: by providing a first pushing protrusion with a first pushing cavity on the flexible protective component, and by providing a third pushing protrusion on the lower surface of the button seat, and by installing the third pushing protrusion in the first pushing cavity, the button seat has a better effect on the flexible protective component. Furthermore, by providing a second pushing protrusion on the flexible protective component, the flexible protective component can quickly and reliably act as a tactile switch, resulting in a better performance of the metal button switch and a reasonable structural design.

[0010] Furthermore, a second pushing cavity is provided on the upper surface of the button base, the button push shaft is installed in the second pushing cavity, and a third pushing cavity is provided at the bottom of the second pushing cavity. The centers of the first pushing cavity, the second pushing cavity, and the third pushing cavity are located on the same straight line, and a fourth pushing protrusion is provided on the lower surface of the button push shaft, the fourth pushing protrusion cooperating with the third pushing cavity.

[0011] The advantages of adopting the above technical solution are as follows: by setting a push shaft installed in the second push cavity, the overall strength of the button seat is enhanced, which helps to extend the service life of the metal push switch. Furthermore, by setting a matching fourth push protrusion and third push cavity, the pressing feel and function of the button seat are better improved.

[0012] Furthermore, a positioning ring is provided on the lower peripheral wall of the switch base, and the lower part of the metal shell abuts against the upper surface of the positioning ring. The lower part of the switch base is also symmetrically provided with riveting grooves, which are arranged on both sides relative to the width of the plastic shell.

[0013] The advantages of the above technical solution are as follows: by setting a positioning ring, the switch base can be accurately installed on the lower part of the metal shell. By setting a riveting groove, after installation, the lower part of the metal shell relative to the riveting groove is squeezed and deformed by a riveting tool, so that the switch base and the metal shell are fixed together. The overall processing is convenient, the processed products have good consistency, and the structural design is reasonable.

[0014] Furthermore, the peripheral wall of the switch base is provided with a first heat dissipation notch, which is connected to the second through cavity and is positioned opposite to the riveting groove. The peripheral wall of the housing is also provided with a second heat dissipation notch, which is connected to the insertion cavity of the housing and is positioned opposite to the first heat dissipation notch.

[0015] The advantages of adopting the above technical solution are: by setting the first heat dissipation notch and the second heat dissipation notch, effective heat dissipation can be achieved when it is used with external connectors, ensuring the safe use of electronic components and extending their service life.

[0016] Furthermore, the upper surface of the switch base is provided with a clearance cavity, which is provided corresponding to the upper part of the terminal.

[0017] The advantages of the above technical solution are: by setting an avoidance cavity, the upper part of the terminal is avoided, so that the circuit board after welding the terminal can be placed on the switch base in a close fit, and the structural design is reasonable.

[0018] Furthermore, a stop ring edge is provided on the upper inner wall surface of the first through cavity, and an anti-disengagement ring edge is provided on the peripheral wall surface of the button seat, the anti-disengagement ring edge cooperating with the stop ring edge.

[0019] The advantages of the above technical solution are: by cooperating with the stop ring edge and the anti-detachment ring edge, the axial sliding limit of the button seat is achieved at the upper opening of the first through cavity, the structure is simple and the button seat is reliable.

[0020] Furthermore, a foolproof structure and a detachment prevention structure are provided between the lower part of the terminal and the insertion cavity of the housing.

[0021] The advantages of adopting the above technical solution are: by setting a foolproof structure, the misinsertion of the connector is prevented, ensuring the safety of use; by setting an anti-dislodgement structure, the reliability of the connector connection is ensured, and the electrical connection is reliable. Attached Figure Description

[0022] Figure 1 This is an exploded view of the overall structure of this utility model; Figure 2 This is a schematic diagram of the metal shell structure of this utility model; Figure 3 The switch base structure of this utility model is shown in the view. Figure 1 ; Figure 4 The switch base structure of this utility model is shown in the view. Figure 2 ; Figure 5 This utility model relates to a terminal block structure. Figure 1 ; Figure 6 This utility model relates to a terminal block structure. Figure 2 ; Figure 7 The button base structure of this utility model is shown in the image. Figure 1 ; Figure 8 The button base structure of this utility model is shown in the image. Figure 2 ; Figure 9 The flexible protective component structure of this utility model is shown in the view. Figure 1 ; Figure 10 The flexible protective component structure of this utility model is viewed from the perspective of Figure 2 ; Figure 11 This is a schematic diagram of the push-shaft structure of this utility model.

[0023] In the diagram: 1-Metal casing, 2-Button base, 3-Switch base, 4-First through cavity, 5-Button push shaft, 6-Circuit board, 7-Terminal block, 8-Tact switch, 9-Plastic shell, 10-Terminal, 11-Second through cavity, 12-Flexible protective component, 13-First pushing protrusion, 14-Second pushing protrusion, 15-First pushing recess, 16-Third pushing protrusion, 17-Second pushing recess, 18-Third pushing recess, 19-Fourth pushing protrusion, 20-Positioning ring edge, 21-Riveting groove, 22-First heat dissipation notch, 23-Second heat dissipation notch, 24-Allowing recess, 25-Stop ring edge, 26-Anti-detachment ring edge, 27-Anti-detachment structure, 28-Nut, 29-Mounting ring edge. Detailed Implementation

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model and / or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without creative effort. Furthermore, references to orientation only indicate the relative positional relationship between the components, not their absolute positional relationship.

[0025] Please see Figures 1 to 11 As shown, a metal push-button switch includes a metal housing 1, a button base 2, a switch base 3, and a switch control assembly. The metal housing 1 has a first through cavity 4. The button base 2 is axially slidingly limited at the upper opening of the first through cavity 4. The switch base 3 is fixed at the lower opening of the first through cavity 4. The switch control assembly is fitted between the button base 2 and the switch base 3. The switch control assembly includes a button push shaft 5, a circuit board 6, and a terminal block 7. The button push shaft 5 is mounted on the button base 2 to drive the button base 2 to slide axially. The circuit board 6 is mounted on the switch base 3. A tactile switch 8 is provided on the upper surface of the circuit board 6, and the tactile switch 8 controls the internal circuitry of the circuit board 6. The tactile switch 8 cooperates with the button base 2, that is, the operator activates the tactile switch 8 through the button base 2. The terminal block 7 includes a housing 9 and multiple terminals 10. The upper part of the terminal 10 is soldered to the bottom surface of the circuit board 6, and the lower part of the terminal 10 is arranged side by side in the insertion cavity of the housing 9. It should be noted that the terminal 10 can be inserted into the housing 9 or the housing 9 and the terminal 10 can be integrally injection molded together. In this way, when the terminal 10 is fixed by soldering, the housing 9 can also be fixed in position. Furthermore, a positioning structure can be set on the peripheral wall of the circuit board 6 to facilitate automated processing. A second through cavity 11 is also provided through the switch base 3, and the housing 9 is also arranged in the second through cavity 11.

[0026] In the above structure, a terminal block 7 connected to the circuit board 6 is provided at the lower part of the metal housing 1. When wiring, the user only needs to plug the connector into the housing 9 to complete the wiring of the metal push-button switch, making wiring more convenient. At the same time, the circuit board structure with a tactile switch 8 is adopted, making the overall structure compact. By setting the housing 9, multiple terminals 10 can be quickly and reliably soldered onto the circuit board 6. Moreover, the terminals 10 are surface-mounted, which allows for higher assembly density of terminals 10 on the circuit board 6, better conductivity, stable and reliable performance, and enables high-speed mass production, resulting in higher overall production efficiency. Furthermore, by fitting the housing 9 into the second through cavity 11, double protection is provided for the lower part of the terminals 10, preventing contact and bending during transportation and ensuring reliability in use.

[0027] In this embodiment, the metal push button switch also includes a flexible protective member 12. The flexible protective member 12 is tightly installed in the first through cavity 4 and is located between the push button base 2 and the circuit board 6. In the above structure, by setting the flexible protective member 12, the pressing of the push button base 2 on the tactile switch 8 on the circuit board 6 is buffered. The flexible protective member 12 also has a sealing function, which can prevent dust from entering and make the use of the circuit board 6 safer.

[0028] In this embodiment, the upper and lower surfaces of the flexible protective member 12 are respectively provided with a first pushing protrusion 13 and a second pushing protrusion 14 at their centers, and the first pushing protrusion 13 is provided with a first pushing recess 15. The lower surface of the button base 2 is provided with a third pushing protrusion 16 at its center. The third pushing protrusion 16 cooperates with the first pushing recess 15, and the second pushing protrusion 14 cooperates with the tactile switch 8. In the above structure, by providing the first pushing protrusion 13 with the first pushing recess 15 on the flexible protective member 12, and by providing the third pushing protrusion 16 on the lower surface of the button base 2, and by installing the third pushing protrusion 16 in the first pushing recess 15, the button base 2 has a good effect on the flexible protective member 12. Furthermore, by providing the second pushing protrusion 14 on the flexible protective member 12, the flexible protective member 14 can quickly and reliably operate the tactile switch 8. The metal button switch has a good performance and a reasonable structural design.

[0029] In this embodiment, a second push-recessed cavity 17 is provided on the upper surface of the button base 2, and the button push shaft 5 is installed in the second push-recessed cavity 17. A third push-recessed cavity 18 is provided at the bottom of the second push-recessed cavity 17. The centers of the first push-recessed cavity 15, the second push-recessed cavity 17, and the third push-recessed cavity 18 are located on the same straight line. A fourth push-recessed protrusion 19 is provided on the lower surface of the button push shaft 5. The fourth push-recessed protrusion 19 cooperates with the third push-recessed cavity 18, and the fourth push-recessed protrusion 19 and the third push-recessed cavity 18 form an insert-push cooperation. In the above structure, by setting the button push shaft 5 installed in the second push-recessed cavity 17, the overall strength of the button base 2 is enhanced, which is beneficial to extending the service life of the metal button switch. Furthermore, by setting the cooperating fourth push-recessed protrusion 19 and the third push-recessed cavity 18, the pressing feel and function of the button base 2 are better improved.

[0030] In this embodiment, the lower part of the first through cavity 4 is annular, and the upper part of the switch base 3 is also annular. The upper part of the switch base 3 is inserted into the lower part of the first through cavity 4. A positioning ring edge 20 is also provided on the lower peripheral wall of the switch base 3. The lower part of the metal shell 1 abuts against the upper surface of the positioning ring edge 20. The lower part of the switch base 3 is also symmetrically provided with riveting grooves 21. The riveting grooves 21 are arranged on both sides of the width of the plastic shell 9. In the above structure, by setting the positioning ring edge 20, the switch base 3 can be accurately installed at the lower part of the metal shell 1. By setting the riveting grooves 21, after installation, the lower part of the metal shell 1 is squeezed and deformed at the position of the riveting grooves 21 by the riveting tool, so that the switch base 3 and the metal shell 1 can be fixed. The overall processing is convenient, the processed products have good consistency, and the structural design is reasonable. More specifically, the lower part of the terminal block 7 will be set as rectangular, and the setting of the riveting grooves 21 will also make the lower part of the switch base 3 form a shape that matches the terminal block 7.

[0031] In this embodiment, a first heat dissipation notch 22 is also provided on the peripheral wall surface of the switch base 3. The first heat dissipation notch 22 is connected to the second through cavity 11 and is set at the opposite riveting groove 21. A second heat dissipation notch 23 is also provided on the peripheral wall surface of the housing 9. The second heat dissipation notch 23 is connected to the insertion cavity of the housing 9 and is set opposite to the first heat dissipation notch 22. In the above structure, by providing the first heat dissipation notch 22 and the second heat dissipation notch 23, effective heat dissipation can be achieved when cooperating with external plug-in components, ensuring the safe use of electronic components and extending their service life.

[0032] In this embodiment, a clearance cavity 24 is provided on the upper surface of the switch base 3. The clearance cavity 24 is provided on the upper part of the terminal 10. In the above structure, by providing the clearance cavity 24, the upper part of the terminal 10 is cleared, so that the circuit board 6 after welding the terminal 10 can be placed on the switch base 3 in a close fit. The structure design is reasonable.

[0033] In this embodiment, a stop ring edge 25 is provided on the upper inner wall surface of the first through cavity 4, and an anti-detachment ring edge 26 is provided on the peripheral wall surface of the button seat 2. The anti-detachment ring edge 26 cooperates with the stop ring edge 25. In the above structure, the purpose of limiting the axial sliding of the button seat 2 at the upper opening of the first through cavity 4 is achieved through the cooperation of the stop ring edge 25 and the anti-detachment ring edge 26. The structure is simple and the button seat 2 is reliable.

[0034] In this embodiment, a foolproof structure and an anti-disengagement structure 27 are provided between the lower part of the terminal 10 and the insertion cavity of the housing 9. The foolproof structure can be set such that the lower part of the terminal 10 is not centered in the insertion cavity. The anti-disengagement structure 27 can be a slot formed on both sides of the insertion cavity. The slot cooperates with the elastic clip. In the above structure, by setting the foolproof structure, the occurrence of misinsertion of the connector is prevented, and the safety of use is guaranteed. By setting the anti-disengagement structure 27, the reliability of the connector connection is guaranteed, and the electrical connection is reliable.

[0035] In this embodiment, the peripheral wall of the metal housing 1 is also provided with threads, which are used to install the nut 28, thereby serving the purpose of fixing the metal push button switch.

[0036] In this embodiment, an mounting ring 29 is provided on the upper inner wall of the first through cavity 4. The mounting ring 29 is positioned below the stop ring 25. The mounting ring 29 is used to cooperate with the circuit board 6. More specifically, after the circuit board 6 is installed in place, it will abut against the lower surface of the mounting ring 29. Therefore, the circuit board 6 can be confined in the first through cavity 4 by the mounting ring 29 and the switch base 3. The structure is reasonably designed.

[0037] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A metal push-button switch, comprising a metal housing (1), a button base (2), a switch base (3), and a switch control assembly, wherein the metal housing (1) has a first through cavity (4), the button base (2) is axially slidably limited and installed at the upper opening of the first through cavity (4), the switch base (3) is fixed at the lower opening of the first through cavity (4), and the switch control assembly is fitted between the button base (2) and the switch base (3), characterized in that: The switch control assembly includes a push-shaft (5), a circuit board (6), and a terminal block (7). The push-shaft (5) is mounted on the button base (2) to drive the button base (2) to slide axially. The circuit board (6) is positioned on the switch base (3). A tactile switch (8) is provided on the upper surface of the circuit board (6). The tactile switch (8) cooperates with the button base (2). The terminal block (7) includes a housing (9) and multiple terminals (10). The upper part of the terminal (10) is soldered to the bottom surface of the circuit board (6). The lower part of the terminal (10) is arranged side by side in the insertion cavity of the housing (9). A second through cavity (11) is provided through the switch base (3). The housing (9) is fitted into the second through cavity (11).

2. A metal push-button switch according to claim 1, characterized in that: The metal push button switch also includes a flexible protective component (12), which is tightly installed in the first through cavity (4) and is located between the push button base (2) and the circuit board (6).

3. A metal push-button switch according to claim 2, characterized in that: The flexible protective component (12) has a first pushing protrusion (13) and a second pushing protrusion (14) at the center of its upper and lower surfaces, respectively. The first pushing protrusion (13) has a first pushing recess (15), and the button base (2) has a third pushing protrusion (16) at the center of its lower surface. The third pushing protrusion (16) cooperates with the first pushing recess (15), and the second pushing protrusion (14) cooperates with the tactile switch (8).

4. A metal push-button switch according to claim 3, characterized in that: The upper surface of the button base (2) is provided with a second push cavity (17), the button push shaft (5) is installed in the second push cavity (17), and the bottom of the second push cavity (17) is provided with a third push cavity (18). The centers of the first push cavity (15), the second push cavity (17), and the third push cavity (18) are located on the same straight line, and the lower surface of the button push shaft (5) is provided with a fourth push protrusion (19), which cooperates with the third push cavity (18).

5. A metal push-button switch according to claim 1, characterized in that: The lower peripheral wall of the switch base (3) is also provided with a positioning ring edge (20), the lower part of the metal shell (1) abuts against the upper surface of the positioning ring edge (20), and the lower part of the switch base (3) is also symmetrically provided with riveting grooves (21), which are arranged on both sides of the width of the plastic shell (9).

6. A metal push-button switch according to claim 5, characterized in that: The peripheral wall of the switch base (3) is also provided with a first heat dissipation notch (22), which is connected to the second through cavity (11) and is positioned opposite to the riveting groove (21). The peripheral wall of the rubber shell (9) is also provided with a second heat dissipation notch (23), which is connected to the insertion cavity of the rubber shell (9) and is positioned opposite to the first heat dissipation notch (22).

7. A metal push-button switch according to claim 1, characterized in that: The upper surface of the switch base (3) is provided with a clearance cavity (24), which is provided on the upper part of the terminal (10).

8. A metal push-button switch according to claim 1, characterized in that: The upper inner wall of the first through cavity (4) is provided with a stop ring edge (25), and the peripheral wall of the button seat (2) is provided with an anti-detachment ring edge (26), which cooperates with the stop ring edge (25).

9. A metal push-button switch according to claim 1, characterized in that: The lower part of the terminal (10) and the insertion cavity of the housing (9) are further provided with a foolproof structure and a detachment prevention structure (27).

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