Key with inserted built-in PCB (printed circuit board)
By designing buttons with built-in PCB boards that can be inserted into the key socket, the incompatibility problem of traditional button circuit boards is solved, enabling convenient replacement and maintenance of electrical components, and improving production efficiency and design flexibility.
Patent Information
- Application Number
- CN202520083120.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-01-14
AI Technical Summary
The incompatibility between the circuit boards of traditional mechanical contact switches and non-contact switches makes it inconvenient to replace and maintain electrical components, increases costs, and reduces design flexibility.
Design a button with a plug-in built-in PCB board. The built-in PCB board is pluggable and detachable in the key socket through a slot. The contact end and the conductive end abut against each other to achieve electrical connection. The electrical components are placed on the PCB board, and the contact end and the conductive end achieve electrical connection when passing through the slot.
It simplifies the assembly process, improves production efficiency, facilitates the replacement and maintenance of electrical components, and enhances design flexibility.
Smart Images
Figure CN223729734U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to switch key technical field, concretely relates to a key with built-in PCB board of plugging. BACKGROUND
[0002] The traditional mechanical contact switch key (contact type switch key) is generally inserted into the external circuit board provided with the socket by the pin of the key seat and is welded to realize the conduction and fixed installation.
[0003] In addition, for the switch needing full stroke trigger, such as the full stroke bipolar trigger Hall switch, the north and south poles of the magnetic block can be inducted by the Hall switch, if the Hall switch is pasted on the circuit board outside the key seat, the magnetic block must be set to be able to be stretched outside the key seat, and the through hole allowing the magnetic block to pass out is set on the external circuit board to realize it, so that this kind of switch key cannot be applied to the external circuit board of the traditional contact type switch key.
[0004] Especially, the method of pasting the electrical element on the circuit board outside the key, when facing the function upgrade of the key (such as replacing different electrical elements) or the failure of a certain electronic element, often leads to the replacement of the whole key seat external circuit board, which not only increases the cost, but also reduces the flexibility of the key design and maintenance. UTILITY MODEL CONTENTS
[0005] In view of the above problems, the utility model aims at providing a key with built-in PCB board of plugging which is convenient to maintain and replace.
[0006] In order to realize the technical purpose, the scheme of the utility model is: a key with built-in PCB board of plugging, including key seat, reset spring and the handle that can move up and down on the key seat, the key seat bottom stretches out the pin, the pin forms the conduction end in the key seat, the key still includes a built-in PCB board, the built-in PCB board pastes the electrical element for generating switch signal, the built-in PCB board is equipped with the contact end still;The key seat is constructed in the plug groove for inserting the built-in PCB board, the built-in PCB board is installed in the key seat through the plug groove and can be inserted and removed;When the built-in PCB board is inserted into the plug groove, the contact end of the built-in PCB board and the conduction end abut to realize the electrical connection.
[0007] As preferred, a conductive end limiting groove for fixing the conductive end is further arranged in the key seat, a pin through hole for fixing and passing the pin is arranged on the key seat, and the pin passes through the pin through hole and is electrically connected with the outside.
[0008] As preferred, an arc-shaped elastic sheet elastically abutting with the contact end is arranged on the conductive end, and the arc-shaped elastic sheet is arranged towards the direction of the built-in PCB board.
[0009] As preferred, a clamping structure abutting with two sides of the built-in PCB board is arranged on the conductive end, and the thickness of the clamping structure matches the thickness of the built-in PCB board.
[0010] As preferred, the three conductive ends in the key correspond to the three pins respectively, two of the conductive ends are arranged on one side of the built-in PCB board, and the other conductive end is arranged on the other side of the built-in PCB board.
[0011] As preferred, the two poles of the magnetic member are arranged in parallel to the direction of the built-in PCB board, the magnetic force line detection direction of the Hall element is perpendicular to the direction of the built-in PCB board, the magnetic member is pressed to approach the adjacent Hall element from one pole of the Hall element, and the other pole of the magnetic member is away from the Hall element, so that the Hall element can detect the magnetic field of the two poles of the magnetic member when the key shaft is pressed.
[0012] As preferred, the utility model further comprises a separate T-shaped trigger shaft which is composed of a shaft top and a shaft body, the trigger shaft is arranged at the bottom center of the pressing head with the shaft top, a reset spring is sleeved outside the shaft body, one end of the reset spring is abutted on the key seat, and the other end is abutted on the bottom of the shaft top, and the magnetic member is installed in the shaft body.
[0013] As preferred, a soundproof pad is further arranged between the pressing handle and the trigger shaft, the soundproof pad is assembled in the pressing handle, a through hole is formed in the top end of the soundproof pad, and the shaft top of the trigger shaft is assembled in the soundproof pad through the through hole of the soundproof pad.
[0014] The key is designed to be plugged with the built-in PCB board, so that the electrical element can be conveniently plugged and fixed in the key seat in the form of the built-in PCB board, the assembly process is simplified, the production efficiency is improved, the electrical element and the built-in PCB board are convenient to replace, the design flexibility is improved, and the subsequent maintenance and upgrading are facilitated. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is the exploded view of the utility model embodiment 2;
[0016] Figure 2 It is the exploded view of the utility model embodiment 4;
[0017] Figure 3 It is the section view of trigger shaft and sound-absorbing pad in the utility model embodiment 4;
[0018] Figure 4 It is the structure schematic view of built-in PCB and arc spring conductive end in the utility model;
[0019] Figure 5 It is the structure schematic view of built-in PCB and key seat in the utility model one;
[0020] Figure 6 It is the structure schematic view of built-in PCB and key seat in the utility model two;
[0021] Figure 7 It is the structure schematic view of key seat in the utility model one;
[0022] Figure 8 It is the structure schematic view of key seat of the utility model embodiment 2;
[0023] Figure 9 It is the structure schematic view of key seat of the utility model embodiment 3;
[0024] Figure 10 It is one of the arrangement of sensor in the utility model;
[0025] Figure 11 It is two of the arrangement of sensor in the utility model;
[0026] Figure 12 It is the structure schematic view of key seat structure of the utility model using bayonet structure;
[0027] Figure 13 It is the structure schematic view of built-in PCB and bayonet structure conductive end in the utility model;
[0028] Figure 14 It is the structure schematic view of bayonet structure conductive end in the utility model.
[0029] In the drawing: 1, built-in PCB; 2, key seat; 21, conductive end limiting slot; 22, slot; 23, guide cavity; 24, pin through hole; 3, reset spring; 4, handle; 41, guide column; 5, conductive end; 51, arc spring; 52, bayonet structure; 6, pin part; 7, conductive socket; 8, hall element; 9, trigger shaft; 91, shaft top; 92, shaft body; 93, sound-absorbing pad; 10, magnetic piece. DETAILED DESCRIPTION
[0030] The utility model will be explained in further detail below in combination with the drawings and specific embodiments. In order to clearly and completely describe the technical solutions, the following embodiments are selected for explanation; the following embodiments are some embodiments of the utility model; other embodiments obtained based on the present application without making creative efforts are all within the protection scope of the utility model.
[0031] In the following embodiments, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "top / bottom" and other orientation or position relationships are all based on the orientation or position relationship shown in the drawings, which is only for the convenience of clearly describing the embodiments and does not indicate or imply that the device or element referred to must have a specific orientation, so it cannot be understood as a limitation on the present application. At the same time, "first", "second" in the embodiments are only used for distinguishing description purposes and do not represent relative importance.
[0032] As shown in Figures 1-11 Embodiment 1 of the utility model is a key with a plug-in built-in PCB board, mainly comprising a key seat 2, a reset spring 3 and a press handle 4 that can move up and down on the key seat 2. The key seat 2 has at least one pin 6 at the bottom for connecting with external circuits, and these pins 6 form conductive ends 5 inside the key seat 2 for realizing abutment with the contact ends on the built-in PCB board 1, thereby establishing electrical connection. The built-in PCB board 1 is attached with electrical elements for generating signals, such as switches, sensors, etc., and corresponding contact ends. The key seat 2 is designed with a slot 22 inside for inserting the built-in PCB board 1, which facilitates the connection of the contact ends of the built-in PCB board 1 with the conductive ends. When the built-in PCB board 1 is inserted into the slot 22, its contact ends are automatically aligned and abutted with the conductive ends 5, completing the electrical connection.
[0033] Further, the key seat 2 is provided with a conductive end limiting slot 21 for fixing the conductive ends 5, to ensure that the conductive ends 5 can be stably inserted and kept in the correct position.
[0034] The conductive ends 5 in this embodiment preferably have two structures. The first is that the conductive ends 5 have arc-shaped elastic pieces for tightly contacting the contact ends of the built-in PCB board 1. The conductive ends 5 are provided with arc-shaped elastic pieces 51 that can elastically abut the contact ends, and the arc-shaped elastic pieces are arranged towards the built-in PCB board 1. When the built-in PCB board 1 is inserted into the slot 22, the contact ends of the built-in PCB board 1 elastically abut the arc-shaped elastic pieces of the conductive ends 5 to realize electrical connection.
[0035] As shown in Figures 12-14As shown, the second is that the conductive end 5 has a bayonet structure 52, which is bent on the conductive end 5 and can abut the two sides of the built-in PCB 1, the thickness of the bayonet structure 52 matches the thickness of the built-in PCB 1, when the built-in PCB 1 is inserted into the slot 22, the contact end of the built-in PCB 1 abuts the bayonet structure 52 of the conductive end to realize electrical connection.
[0036] Meanwhile, the key seat 2 is also provided with a pin through hole 24 for mounting and fixing the pin 6, and the pin 6 is connected with the conductive socket 7 or other circuit elements through the pin through hole 24.
[0037] In order to optimize the assembly efficiency and structural stability, the conductive end 5, the pin 6 and the built-in PCB 1 are designed to be vertically inserted into the corresponding slot 22, conductive end limiting groove 21 and pin through hole 24. In addition, according to the specific application requirement, the key can be configured with different number of pins 6 and conductive ends 5 to meet different electrical connection requirements. For example, in this embodiment, the key has three conductive ends 5 corresponding to three pins 6, two of which are located on one side of the built-in PCB 1, and the other is located on the other side of the built-in PCB 1.
[0038] Each built-in PCB is attached with an electrical element for realizing the transmission and processing of electrical signals, unlike the traditional integrated design, the built-in PCB of the scheme is designed as an independent replaceable module, which is convenient for individual replacement when failure occurs or needs to be upgraded, simplifies the installation process, improves the assembly efficiency and convenience, and reduces the maintenance cost.
[0039] The embodiment 2 of the utility model further has a magnetic member 10 at the bottom of the key handle 4 based on the embodiment 1. Figure 1 、 Figure 8 As shown, the bottom of the key handle 4 is provided with a guide column 41, and the magnetic member 10 is embedded in the guide column 41. In order to ensure that the trigger shaft 9 can move up and down stably, the embodiment further provides a guide cavity 23 on the key seat 2, and the shaft body 92 is assembled in the guide cavity 23 and can move up and down. The electrical element can be a Hall element or a TMR sensor, which can realize non-contact detection of the magnetic field of the magnetic member 10. The bottom of the key seat 2 is provided with a through hole allowing the guide column 41 to move downward, and the two poles of the magnetic member 10 are arranged in parallel to the direction of the built-in PCB 1. In this embodiment, a Hall element 8 corresponding to the magnetic member 10 is arranged on the built-in PCB. Figures 10-11, the Hall element 8 can be arranged on the front surface or the back surface of the built-in PCB board. The magnetic force line detection direction of the Hall element 8 is perpendicular to the built-in PCB board. When the press handle 4 is pressed, one magnetic pole of the magnetic member 10 far away from the Hall element 8 approaches the Hall element 8, and the other magnetic pole of the magnetic member 10 close to the Hall element 8 is far away from the Hall element 8, so that the Hall element 8 can detect the magnetic field of the two magnetic poles of the magnetic member 10 when the press handle 4 is pressed, thereby realizing non-contact signal detection.
[0040] The embodiment 2 of the utility model further provides a press handle 4, which is provided with a magnetic member 10 at the bottom of the press handle 4. The two magnetic poles of the magnetic member 10 are parallel to the built-in PCB board 11, and the Hall element 8 corresponding to the magnetic member 10 is arranged on the built-in PCB board 11. The electrical element can also be a TMR sensor, as long as the non-contact detection of the magnetic field of the magnetic member 10 can be realized. The magnetic force line detection direction of the Hall element 8 is perpendicular to the built-in PCB board 1. When the press handle 4 is pressed, one magnetic pole of the magnetic member 10 far away from the Hall element 8 approaches the Hall element 8, and the other magnetic pole of the magnetic member 10 close to the Hall element 8 is far away from the Hall element 8, so that the Hall element 8 can detect the magnetic field of the two magnetic poles of the magnetic member 10 when the press handle 4 is pressed, thereby realizing non-contact signal detection.
[0041] The difference between the embodiment 3 and the embodiment 2 lies in that, as shown in the figure, Figure 9 The built-in PCB board 11 in the utility model is parallel to the two magnetic poles of the magnetic member 10, and the Hall element 8 can be arranged on the side edge, so that the magnet does not need to extend below the key seat 2, and the Hall element 8 can be triggered to generate a full-level signal in the full stroke.
[0042] Embodiment 4:
[0043] On the basis of the embodiment 3, the embodiment further provides an optional trigger shaft 9 design. The T-shaped trigger shaft 9 is composed of a shaft top 91 and a shaft body 92. The trigger shaft 9 is arranged in abutment with the bottom center position of the press handle 4 by the shaft top 91. The reset spring 3 is sleeved outside the shaft body 92 and is in abutment with the key seat 2 at one end and the bottom of the shaft top 91 at the other end, so as to provide the rebound force of the press handle 4 and ensure that the press handle 4 can quickly return to the initial position after being pressed. The magnetic member 10 is installed in the shaft body 92. This design not only improves the sensitivity of the press handle 4, but also makes the assembly of the press handle 4 more flexible.
[0044] In order to further improve the mute performance of the press handle 4, the embodiment can further be provided with a sound-absorbing pad 93 between the press handle 4 and the trigger shaft 9. The sound-absorbing pad 93 is arranged inside the press handle 4 and is provided with a through hole at the top end. The shaft top 91 of the trigger shaft 9 is arranged in the sound-absorbing pad 93 through the through hole of the sound-absorbing pad 93, so as to effectively reduce the noise during the operation of the press handle 4.
[0045] In summary, the key with plug-in built-in PCB board of the application, through the modular design, the cooperation of magnetic part 10 and Hall element 8 and the optional trigger shaft 9 and sound-absorbing pad 93 design, realizes the advantages of compact structure, simple assembly, sensitive operation and low noise, and is suitable for various electronic devices requiring high-quality user interface.
[0046] The above is only the preferred embodiment of the present application, and is not used to limit the present application, and any slight modification, equivalent replacement and improvement of the above embodiment according to the technical essence of the present application shall be included in the protection scope of the technical scheme of the present application.
Claims
1. A key with plug-in built-in PCB board, comprising a key seat, a reset spring and a key handle capable of moving up and down on the key seat, the bottom of the key seat extending with a pin, characterized in that: The pin is provided with a conductive end in the key seat, the key further comprises an internal PCB board, the internal PCB board is provided with electrical elements for generating switch signals, and the internal PCB board is further provided with a contact end; the key seat is provided with a slot for inserting the internal PCB board, and the internal PCB board is inserted into the slot and is electrically connected to the conductive end.
2. The key with plug-in built-in PCB board according to claim 1, characterized in that: The key seat is further provided with a conductive end limiting slot for fixing the conductive end, and the key seat is provided with a pin through hole for fixing and penetrating the pin.
3. The key with plug-in PCB board according to claim 2, characterized in that: The conductive end is provided with an arc-shaped elastic sheet capable of elastically abutting against the contact end, and the arc-shaped elastic sheet is arranged towards the internal PCB board, and when the internal PCB board is inserted into the slot, the contact end of the internal PCB board is elastically abutted against the arc-shaped elastic sheet of the conductive end to realize electrical connection.
4. The key with plug-in PCB board according to claim 2, characterized in that: The conductive end is provided with a bayonet structure capable of abutting against both sides of the internal PCB board, and the thickness of the bayonet structure matches the thickness of the internal PCB board, and when the internal PCB board is inserted into the slot, the contact end of the internal PCB board is abutted against the bayonet structure of the conductive end to realize electrical connection.
5. The key with plug-in PCB board according to claim 3 or 4, characterized in that: The key has three conductive ends corresponding to three pins, two of which are located on one side of the internal PCB board, and the other is located on the other side of the internal PCB board.
6. The key with plug-in PCB board according to claim 3 or 4, characterized in that: The bottom of the handle is provided with a magnetic member, and the electrical element is a Hall element.
7. The key with plug-in PCB board according to claim 6, characterized in that: The two poles of the magnetic member are arranged in parallel to the direction of the internal PCB board, and the magnetic force line detection direction of the Hall element is perpendicular to the direction of the internal PCB board, and pressing the handle can make the magnetic member approach the adjacent Hall element away from one pole of the Hall element, and the other pole of the Hall element is away from the Hall element, so that the Hall element can detect the magnetic field of the two poles of the magnetic member when the key is pressed.
8. The key with plug-in PCB board according to claim 6, characterized in that: Further comprising a separate T-shaped trigger shaft, the trigger shaft is composed of a shaft top and a shaft body, and the trigger shaft is abutted at the bottom center of the pressing head; the reset spring is sleeved outside the shaft body, one end of the reset spring is abutted on the key seat, and the other end is abutted on the bottom of the shaft top; the magnetic member is installed in the shaft body.
9. The key with plug-in PCB board according to claim 8, characterized in that: The handle and the trigger shaft are further provided with a sound-absorbing pad, the sound-absorbing pad is assembled in the handle, the top end of the sound-absorbing pad is provided with a through hole, and the shaft top of the trigger shaft is assembled in the sound-absorbing pad through the through hole of the sound-absorbing pad.