Key switch using circuit board section to design vertical conductive disc

Abstract

A key switch using a circuit board cross section to design a vertical conductive disc comprises a housing, at least one side surface of which is provided with a first through hole communicated with an accommodation space; the side surface of the printed circuit board is provided with at least two conductive contact surfaces, and the conductive contact surfaces are arranged corresponding to the first through holes; the at least one first key is arranged in the first through hole in a pressing manner; the first press switch is arranged between the first key and the conductive contact surface, one end of the first press switch is abutted against the first key, and when the first key is pressed, the conductive contact surface arranged corresponding to the first press switch is conducted, and the conductive contact surface is directly arranged on the side edge of the printed circuit board, so that the conductive contact surface can be switched on; according to the technical scheme, the keys in different directions can be in direct electric contact with the same printed circuit board, the complexity that multiple circuit boards are connected through wires in the prior art is omitted, the product reliability is higher in the manufacturing process, meanwhile, the part cost and the assembly cost are saved, and the space occupancy is smaller.

Description

Technical Field

[0001] The utility model specifically relates to a key switch which utilizes the cross section of a circuit board to design an upright conductive disk. Background Art

[0002] As the most direct expression between the driver and the vehicle, switches play a vital role in the vehicle. Especially during the entire driving process, if the driver expresses a certain intention or makes a certain driving action, he will use different switches at various positions to make signal prompts, such as steering wheel control switches, window control switches, etc.

[0003] The circuit board contacts of common automobile switches are made to realize the pressing or rotating on-off function on the front side of the plate and the contact pair. Generally, the various button switches of the automobile switch are on the same plane. When the positive pressure and side pressure functions exist at the same time, the ordinary circuit board cannot meet the multi-directional functional requirements. Generally, multiple circuit boards are used, which are arranged in the form of buttons facing different directions, and each circuit board is connected by wires, which increases the cost and space requirements. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a key switch which utilizes the cross section of a circuit board to design an upright conductive disk.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A key switch using a circuit board cross section to design an upright conductive disk, comprising:

[0007] A housing having a receiving space therein and at least one side thereof having a first through hole communicating with the receiving space;

[0008] A printed circuit board is arranged in the accommodation space, and at least two conductive contact surfaces are arranged on the side of the printed circuit board, and the conductive contact surfaces are arranged corresponding to the first through holes;

[0009] At least one first button, pressably disposed in the first through hole;

[0010] The first push switch is disposed between the first button and the conductive contact surface, one end of which is disposed in contact with the first button, and when the first button is pressed, the conductive contact surface corresponding to the first button is turned on.

[0011] An insulating region is provided between adjacent conductive contact surfaces on the same side.

[0012] The conductive contact surface includes a protrusion extending along the side of the printed circuit board and a copper plating layer formed on the surface of the protrusion, and the copper plating layer is electrically connected to the circuits on the upper and lower surfaces of the printed circuit board.

[0013] The conductive contact surface includes a protrusion extending along the side of the printed circuit board and a copper foil layer formed on the surface of the protrusion, and the copper foil layer is formed by bending and covering the copper foil on the upper and lower surfaces of the printed circuit board and arranged on the surface of the protrusion.

[0014] The insulating region is formed by recesses between adjacent conductive contact surfaces.

[0015] The first push switch is a conductive rubber having at least one pressing portion, and when the first button is pressed, two adjacent conductive contact surfaces are connected.

[0016] A second through hole is provided on the upper surface of the shell, the axis of the second through hole is arranged perpendicular to the axis of the first through hole, and a second button movable along the axis of the second through hole is provided in the second through hole, at least one group of conductive plates arranged in pairs are correspondingly provided on the printed circuit board, and a second push switch is provided between the second button and the conductive plate.

[0017] The beneficial effects of the utility model are as follows: a conductive contact surface is directly arranged on the side of the printed circuit board, so that buttons in different directions can directly achieve electrical contact with the same printed circuit board, eliminating the cumbersomeness of connecting multiple circuit boards through wires in the past, and the product reliability is higher in the manufacturing process, while saving parts cost, assembly cost, and smaller space occupancy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0019] Figure 2 It is a horizontal cross-sectional schematic diagram of an embodiment of the utility model.

[0020] Figure 3 It is a vertical cross-sectional schematic diagram of an embodiment of the utility model.

[0021] Figure 4 The structure diagram of the printed circuit board of the embodiment of the utility model is shown in FIG.

[0022] Figure 5 This is an embodiment of the conductive contact surface of the present utility model.

[0023] Figure 6 This is another embodiment of the conductive contact surface of the present invention. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0026] As shown in the figure, the utility model discloses a key switch that utilizes the cross-section of a circuit board to design an upright conductive disk, which is mainly suitable for a key switch with multiple key directions, with the length direction of the circuit board as the X direction, the width direction as the Y direction, and the direction perpendicular to the circuit board as the Z direction. Generally, a key switch with keys in any two of the three directions or in a direction other than the Z direction can adopt the technical solution in the present application, wherein the other two directions except the Z direction can be designed according to the inclination angle of the side of the circuit board to realize key designs in different directions, such as a key direction with a certain angle with the X direction or the Y direction, to realize key designs in various directions that are not perpendicular to the plane of the circuit board, without adding additional circuit board designs.

[0027] The key switch comprises a housing, a key that can be pressed on the housing, a printed circuit board placed in the housing, and a push switch, wherein the printed circuit board is placed in the housing in a flat manner. If no side keys are required, a plurality of conductive plates are arranged on the surface of the printed circuit board as in a normal key switch, and the connection of the conductive plates is achieved by using the keys and the push switch. If keys are required to be arranged on the side of the housing, a corresponding number of conductive contact surfaces are arranged on the side of the printed circuit board according to the number of required keys, and the contact between the conductive contact surfaces is achieved by using the contact between the push switch and the conductive contact surface, thereby realizing the design of key switches with keys in different directions.

[0028] The housing 1 includes an upper cover and a bracket, which are fixed by being locked or screwed together, and a receiving space 11 is formed therebetween, and at least one side thereof is provided with a first through hole 12 communicating with the receiving space 11.

[0029] The printed circuit board 4 is arranged in the accommodating space 11, and at least two conductive contact surfaces 43 are provided on the side of the printed circuit board 4. Multiple conductive contact surfaces 43 can also be provided to improve the reliability of contact. The conductive contact surface 43 is arranged corresponding to the first through hole 12, that is, pressing the first button arranged in the first through hole can form a path between the conductive contact surfaces arranged corresponding to it.

[0030] At least one first button 2 can be pressed into the first through hole 12, and a structure for limiting the first button 2 from falling out is provided between the first button 2 and the first through hole, thereby preventing the first button from falling out of the first through hole and affecting the normal use of the button switch.

[0031] The first push switch 5 is disposed between the first button 2 and the conductive contact surface 43 , one end of which is disposed in contact with the first button 2 , and when the first button 2 is pressed, the conductive contact surface 43 corresponding to the first push switch 5 is turned on.

[0032] The first push switch 5 is a conductive rubber with at least one pressing portion, and when the first button is pressed, conducts two adjacent conductive contact surfaces 43. In some embodiments, a micro switch can also be used, and conduction is achieved by pressing the micro switch with the first button.

[0033] According to the number of conductive contact surfaces, multiple pressing parts can be set. A conductor is provided at the bottom of each pressing part. When the pressing part is pressed, the conductor moves downward and contacts the conductive contact surface. Generally, two conductive contact surfaces are set corresponding to one conductor, that is, two conductive contact surfaces disconnect a circuit, and two conductive contact surfaces are connected through the conductor to achieve the connection of the circuit. The design of multiple groups of conductive contact surfaces is that each group of conductive contact surfaces is set in parallel, so that any group of conductive contact surfaces can connect the circuit connected to the two groups, which plays a role of insurance and avoids the phenomenon that any one of the conductive contact surfaces fails and causes the circuit to be unable to connect.

[0034] An insulating area 42 is provided between adjacent conductive contact surfaces 43 on the same side. The insulating area is used to insulate two adjacent conductive contact surfaces to prevent accidental contact between the two. The insulating area is substantially free of copper burrs, thereby ensuring isolation between the two conductive contact surfaces. Conduction between the two can only be achieved by pressing the switch.

[0035] In a specific embodiment, the conductive contact surface 43 includes a protrusion 41 extending along the side of the printed circuit board and a copper plating layer 43a formed on the surface of the protrusion, and the copper plating layer 43a is electrically connected to the circuit on the upper / lower surface of the printed circuit board 4. The copper plating layer can be prepared by an immersion gold contact process, and the copper plating layer can be electrically connected to the circuit on the upper or lower surface to achieve connection with the circuit of the printed circuit board.

[0036] Alternatively, the conductive contact surface 43 includes a protrusion 41 extending along the side of the printed circuit board and a copper foil layer 43b formed on the surface of the protrusion 41, and the copper foil layer 43b is composed of copper foil on the upper / lower surface of the printed circuit board 4 bent and wrapped on the surface of the protrusion 41, and the copper foil on the upper surface or lower surface of the printed circuit board is directly bent and wrapped on the protrusion.

[0037] The insulating area 42 is formed by recesses between adjacent conductive contact surfaces, and each recess has no copper burrs.

[0038] As for the Z-direction button design, a second through hole 13 can be set on the upper surface of the shell, the axis of the second through hole 13 is set perpendicular to the axis of the first through hole 12, and a second button 3 that can move along the axis of the second through hole 13 is set in the second through hole 13, and at least one group of conductive plates 44 arranged in pairs are correspondingly provided on the printed circuit board 4, and a second push switch 6 is provided between the second button 3 and the conductive plate.

[0039] The embodiments should not be regarded as limiting the present invention, but any improvements based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. A push button switch using a circuit board cross section to design an upright conductive disk, characterized in that: It includes: A housing (1) having a receiving space (11) therein, and at least one side surface of the housing having a first through hole (12) in communication with the receiving space (11); A printed circuit board (4) is arranged in the accommodating space (11), and at least two conductive contact surfaces (43) are provided on the side surface of the printed circuit board (4), and the conductive contact surfaces (43) are arranged corresponding to the first through holes (12); At least one first button (2) pressably disposed in the first through hole (12); The first push switch (5) is disposed between the first button (2) and the conductive contact surface (43), one end of which is disposed in contact with the first button (2), and when the first button (2) is pressed, the conductive contact surface (43) corresponding to the first button (2) is turned on.

2. A push switch using a circuit board cross section to design an upright conductive plate according to claim 1, characterized in that: An insulating region (42) is provided between adjacent conductive contact surfaces (43) on the same side.

3. A push switch using a circuit board cross section to design an upright conductive disk according to claim 1 or 2, characterized in that: The conductive contact surface (43) comprises a protrusion (41) extending along the side of the printed circuit board and a copper plating layer (43a) formed on the surface of the protrusion, and the copper plating layer (43a) is electrically connected to the circuits on the upper / lower surface of the printed circuit board (4).

4. A push switch using a circuit board cross section to design an upright conductive disk according to claim 1 or 2, characterized in that: The conductive contact surface (43) comprises a protrusion (41) extending along the side of the printed circuit board and a copper foil layer (43b) formed on the surface of the protrusion (41), and the copper foil layer (43b) is composed of copper foil on the upper / lower surface of the printed circuit board (4) bent and coated on the surface of the protrusion (41).

5. A push switch using a circuit board cross section to design an upright conductive disk according to claim 2, characterized in that: The insulating region (42) is formed by recesses between adjacent conductive contact surfaces.

6. A push switch using a circuit board cross section to design an upright conductive plate according to claim 1, characterized in that: The first pressing switch (5) is a conductive rubber provided with at least one pressing portion, and when the first button is pressed, two adjacent conductive contact surfaces (43) are connected.

7. A push switch using a circuit board cross section to design an upright conductive plate according to claim 1, characterized in that: A second through hole (13) is provided on the upper surface of the shell, the axis of the second through hole (13) is arranged perpendicular to the axis of the first through hole (12), and a second key (3) movable along the axis of the second through hole (13) is provided in the second through hole (13), at least one group of conductive plates (44) arranged in pairs are correspondingly provided on the printed circuit board (4), and a second push switch (6) is provided between the second key (3) and the conductive plate.

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