PCB preassembled four-way rocker switch

Abstract

The utility model relates to the technical field of electronic components, and particularly discloses a PCB preassembled four-way rocker switch, which comprises a square shell which is encircled to form an accommodating cavity; the keyboard plate is positioned in the accommodating cavity; the four-way ball head rocker is used for pressing the key board downwards after being driven; the PCB preassembled part comprises a circuit board of which the top surface is provided with a plurality of pairs of conductive pads, and a plurality of metal elastic sheets which are fixedly arranged on the circuit board; wherein the metal elastic sheet has a disconnection state in which the metal elastic sheet upwards recovers deformation to be separated from the two corresponding conductive bonding pads when not pressed, so that the two conductive bonding pads are disconnected; and in the conduction state, the four-way ball rocker is driven by the four-way ball rocker to move downwards to be attached to the two corresponding conductive bonding pads, so that the two conductive bonding pads are conducted. The PCB preassembled four-way rocker switch provided by the utility model can effectively solve the problem of low assembly efficiency caused by easy displacement of the metal elastic sheet in the assembly operation process.

Description

Technical Field

[0001] This utility model relates to the field of electronic components technology, and in particular to a PCB pre-installed four-way rocker switch. Background Technology

[0002] The inside of a rocker switch usually contains a metal spring (also known as a "dowel plate"). When the four-way rocker is rotated, the four-way rocker presses the metal spring, causing the metal spring to be recessed and contact the two electrical pads below it, thus making the two electrical pads conductive.

[0003] In existing rocker switches, the metal spring is not pre-fixed to other components. Due to its light weight and small size, it is easily affected by vibration, airflow, and other factors during assembly, causing the metal spring to shift. Because the metal spring is prone to displacement, assembly workers need to spend a lot of time and effort adjusting its position to ensure it is correctly aligned with the electrical pads. This not only increases labor costs but also reduces production efficiency, negatively impacting the company's development.

[0004] Therefore, existing rocker switches need to be improved to solve the problem that the metal spring is prone to displacement during the assembly process, resulting in low assembly efficiency.

[0005] The information disclosed in this background section is included only to enhance the understanding of the context of this disclosure, and therefore may contain information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0006] One objective of this invention is to provide a PCB pre-installed four-way rocker switch that can effectively solve the problem of low assembly efficiency caused by the easy displacement of metal contacts during assembly.

[0007] To achieve the above objectives, this utility model provides a PCB pre-installed four-way rocker switch, comprising:

[0008] A square housing, the square housing surrounding and forming an accommodating cavity;

[0009] A button panel, which is located within the accommodating cavity;

[0010] A four-way ball-head rocker, which is rotatably connected to the square housing, is used to press the button panel downwards when driven.

[0011] The PCB pre-assembly is located below the square housing and includes a circuit board with several pairs of conductive pads on its top surface and several metal springs fixed on the circuit board.

[0012] The metal spring has an open state where it recovers its upward deformation and detaches from the two corresponding conductive pads when not under pressure, thus disconnecting the two conductive pads; and an open state where it moves downward under the drive of the four-way ball joint rocker arm to fit the two corresponding conductive pads, thus making the two conductive pads conductive.

[0013] Optionally, the metal spring is fixed to the circuit board by attaching a high-temperature resistant sticker.

[0014] Optionally, the circuit board is provided with a spring positioning groove for the metal spring to enter.

[0015] Optionally, the keypad includes a connecting substrate, and the connecting substrate is provided with a reset keycap corresponding to the position of each pair of conductive pads.

[0016] Optionally, the square housing includes a housing base and a housing cover disposed above the housing base and cooperating with the housing base to form the accommodating cavity.

[0017] Optionally, the housing base is provided with a lower clearance groove corresponding to the position of each reset keycap.

[0018] Optionally, the housing base is provided with an upwardly protruding ball joint, and the bottom of the four-way ball joint is provided with a spherical groove for the ball joint to be inserted.

[0019] Optionally, the four-way ball joint is provided with a lateral pressure bar for pressing down on the reset keycap at the position of each of the reset keycaps, and the housing cover is provided with an upper clearance groove at the position of each of the lateral pressure bars.

[0020] Optionally, a flexible pressure block bracket is provided between the four-way ball joint and each of the reset keycaps, and each of the lateral pressure rods presses down on the corresponding reset keycap through the flexible pressure block bracket.

[0021] Optionally, the housing base and the housing cover are snap-fitted together.

[0022] The beneficial effects of this utility model are as follows: It provides a PCB pre-installed four-way rocker switch. When the rocker switch is not operated, the metal spring is in an uncompressed state due to its elasticity. At this time, the metal spring returns to its original shape and disengages from the two conductive pads below it, so that the conductive pads are in an open state.

[0023] When the operator rotates the four-way ball joint, the four-way ball joint presses down on the button plate, which in turn transmits force to the metal spring through the button plate. This causes the metal spring to deform downwards until it contacts the conductive pad below, thus making the conductive pad conductive and completing the circuit closure.

[0024] In the above process, the metal springs are pre-installed on the circuit board instead of being left freely placed. This design reduces the degree of freedom of movement of the metal springs during assembly, lowering the risk of displacement due to vibration or airflow. Assembly workers do not need to position and fix the metal springs during assembly, which greatly simplifies the assembly process and reduces assembly time. Furthermore, because the position of the metal springs is pre-fixed, no fine-tuning of the springs is required during assembly, thereby reducing the possibility of assembly errors and improving production efficiency.

[0025] Therefore, the PCB pre-installed four-way rocker switch provided by this utility model can effectively solve the problem that the metal spring is easy to shift during the assembly process, resulting in low assembly efficiency. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 An exploded view of a PCB pre-installed four-way rocker switch provided in an embodiment;

[0028] Figure 2 A cross-sectional view of a PCB pre-installed four-way rocker switch provided for an embodiment;

[0029] Figure 3 A schematic diagram illustrating the assembly process of the PCB pre-mounted four-way rocker switch provided in this embodiment;

[0030] Figure 4 This is a schematic diagram of the mounting structure of the square housing and PCB pre-assembled components provided in the embodiment.

[0031] In the picture:

[0032] 1. Square housing; 101. Housing base; 1011. Lower clearance groove; 1012. Ball joint; 102. Housing cover; 1021. Upper clearance groove; 1022. Positioning post;

[0033] 2. Button board; 201. Connecting base plate; 202. Reset keycap;

[0034] 3. Four-way ball joint rocker; 301. Lateral pressure bar;

[0035] 4. PCB pre-assembled components; 401. Circuit board; 4011. Spring positioning slot; 402. Metal spring;

[0036] 5. Flexible pressure block support;

[0037] 6. Fasteners. Detailed Implementation

[0038] In this utility model, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this utility model. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this utility model, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0039] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit the invention.

[0040] In the description of this utility model, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " generally indicates that the preceding and following objects have an "or" logical relationship.

[0041] In this invention, terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy, or order between these entities or operations.

[0042] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this invention is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a series of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0043] Similar to the understanding in the Examination Guidelines, in this utility model, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments of this utility model, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0044] In the description of the embodiments of this utility model, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the convenience of describing the specific embodiments of this utility model or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0045] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this utility model, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this utility model pertains, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0046] See Figure 1 and Figure 2 This utility model provides a PCB pre-installed four-way rocker switch, including a square housing 1, a button plate 2, a four-way ball head rocker 3, and a PCB pre-installed component 4.

[0047] The square housing 1 surrounds and forms a receiving cavity; the keypad 2 is located inside the receiving cavity; the four-way ball joint rocker arm 3 is rotatably connected to the square housing 1 and is used to press the keypad 2 downward after being driven; the PCB pre-assembled component 4 is located below the square housing 1 and includes a circuit board 401 with several pairs of conductive pads on the top surface and several metal springs 402 fixed on the circuit board 401.

[0048] The metal spring 402 has an open state where it recovers its upward deformation and detaches from the corresponding two conductive pads when not under pressure, thus disconnecting the two conductive pads; and an on state where it is driven downward by the four-way ball joint 3 to fit against the corresponding two conductive pads, thus making the two conductive pads conductive.

[0049] The PCB pre-installed four-way rocker switch provided in this embodiment has a metal spring 402 in an uncompressed state due to its elasticity when the rocker switch is not operated. At this time, the metal spring 402 restores its upward deformation and disengages from the two conductive pads below it, so that the conductive pads are in an open state.

[0050] When the operator rotates the four-way ball joint 3, the four-way ball joint 3 presses down on the button plate 2, and then transmits the force to the metal spring 402 through the button plate 2, causing the metal spring 402 to deform downward until it contacts the conductive pad below, thereby making the conductive pad conduct electricity and completing the circuit closure.

[0051] In the above process, the metal spring 402 is pre-installed on the circuit board 401 instead of being left freely placed. This design reduces the degree of freedom of movement of the metal spring 402 during assembly, lowering the risk of displacement due to vibration or airflow. Assembly workers do not need to position and fix the metal spring 402 during assembly, which greatly simplifies the assembly steps and reduces assembly time. Furthermore, because the position of the metal spring 402 is pre-fixed, there is no need to fine-tune the spring during assembly, thereby reducing the possibility of assembly errors and improving production efficiency.

[0052] Therefore, the PCB pre-installed four-way rocker switch provided by this utility model can effectively solve the problem that the metal spring 402 is prone to displacement during the assembly process, resulting in low assembly efficiency.

[0053] In this embodiment, the metal spring 402 is fixed to the circuit board 401 by a high-temperature resistant sticker. Optionally, the high-temperature resistant sticker can be polyimide high-temperature resistant tape, PET high-temperature resistant tape, or PVC high-temperature resistant sticker, etc.

[0054] Optionally, the keypad 2 includes a connecting substrate 201, and the connecting substrate 201 is provided with a reset keycap 202 corresponding to the position of each pair of conductive pads.

[0055] In this embodiment, the square housing 1 includes a housing base 101 and a housing cover 102 that covers the housing base 101 and cooperates with the housing base 101 to form the accommodating cavity. Further, the housing base 101 is provided with a lower clearance groove 1011 corresponding to the position of each reset keycap 202.

[0056] When the four-way ball head joystick 3 presses down on the reset keycap 202, the reset keycap 202 can deform downward and contact the metal spring 402 directly below the lower clearance groove 1011 through the corresponding lower clearance groove 1011, thereby applying downward pressure to the metal spring 402.

[0057] Optionally, the housing base 101 is provided with an upwardly protruding ball joint 1012, and the bottom of the four-way ball joint rocker 3 is provided with a spherical groove for the ball joint 1012 to be inserted. The four-way ball joint rocker 3 is provided with a lateral pressure rod 301 for pressing down on the reset keycap 202 at each position, and the housing cover 102 is provided with an upper clearance groove 1021 at each position of the lateral pressure rod 301.

[0058] The presence of the upper clearance groove 1021 ensures that even with a relatively small overall height of the square housing 1, the lateral pressure rod 301 has sufficient space during rocker arm movement and will not interfere with the housing cover 102. This helps to further reduce the size of the compact rocker switch and improve the structural compactness.

[0059] Optionally, the number of the transverse pressure rods 301 is four (four-way rocker), and the four transverse pressure rods 301 form a cross structure.

[0060] Optionally, the housing base 101 and the housing cover 102 are snap-fit ​​connected for easy assembly and disassembly.

[0061] In this embodiment, a flexible pressure block bracket 5 is provided between the four-way ball head rocker 3 and each of the reset keycaps 202, and each of the horizontal pressure rods 301 presses down on the corresponding reset keycap 202 through the flexible pressure block bracket 5.

[0062] The flexible pressure block bracket 5 plays a crucial role in transmitting pressure, buffering, maintaining stability, and adapting to deformation in PCB-pre-assembled four-way rocker switches. It effectively transmits the movement and pressure of the four-way ball joint 3 to the reset keycap 202, while reducing hard contact during operation, lowering vibration and noise, and improving user comfort and switch lifespan. Furthermore, the flexible pressure block bracket 5 prevents the reset keycap 202 from excessively compressing the metal spring 402, protecting other sensitive components on the circuit board 401, simplifying the assembly process, and improving the overall reliability and lifespan of the product.

[0063] See Figure 3 The assembly process of the pre-installed rocker switch with a bottom shell provided in this embodiment is as follows:

[0064] S10: After sequentially inserting the four-way ball head rocker 3, the flexible pressure block bracket 5, and the button plate 2 into the housing cover 102, snap-fit ​​the housing base 101 to the housing cover 102.

[0065] S20: The metal spring 402 is heat-attached and fixed to the circuit board 401, ensuring that each metal spring 402 is located directly above the corresponding two conductive pads to obtain the PCB pre-assembled part 4; further, the circuit board 401 is provided with a spring positioning groove 4011 for the metal spring 402 to enter, so as to complete the positioning of the metal spring 402.

[0066] S30: Secure the square housing 1 onto the PCB pre-assembled component 4 to complete the assembly; see below. Figure 4 Furthermore, the bottom of the housing cover 102 is provided with a positioning post 1022 that passes through the housing base 101, and the circuit board 401 is provided with a positioning hole for the positioning post 1022 to be inserted, so that the alignment operation between the square housing 1 and the circuit board 401 can be completed.

[0067] Optionally, fasteners such as bolts can be used to fix the circuit board 401 to the bottom of the housing base 101.

[0068] In summary, the PCB pre-installed four-way rocker switch provided in this embodiment has the following advantages:

[0069] ①Simplified assembly process: Since the metal spring 402 is pre-installed on the circuit board 401, the assembly worker does not need to position and fix the metal spring 402 during the assembly process, which greatly simplifies the assembly steps and reduces the assembly time.

[0070] ② Improve assembly efficiency: The pre-assembled design reduces the degree of freedom of movement of the metal spring 402 during the assembly process, reduces the risk of displacement due to vibration or airflow, thereby reducing the possibility of assembly errors and improving production efficiency.

[0071] ③ Improve product reliability: The pre-fixing of the metal spring 402 ensures the consistency of the position of the metal spring 402 in each switch, improves the quality stability of the product, and extends the service life of the switch.

[0072] ④ Reduce assembly errors: Since there is no need to fine-tune the metal spring 402, the possibility of human error is reduced, further improving the product qualification rate.

[0073] ⑤ Compact structure: By designing the upper clearance groove 1021 and the lower clearance groove 1011, as well as the ball joint 1012 and the spherical groove, the square shell 1 can be designed to be smaller, which improves the structural compactness and is conducive to miniaturization design.

[0074] ⑥ Improve user comfort: The use of flexible pressure block bracket 5 reduces hard contact during joystick operation, reduces vibration and noise, and improves the user's operating experience.

[0075] ⑦ High adaptability: By using high-temperature resistant stickers to fix the metal spring 402, it can adapt to different temperature environments, maintain the stability of the metal spring 402, and is suitable for electronic devices in various environments.

[0076] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A PCB pre-installed four-way rocker switch, characterized in that, include: A square shell (1) surrounds and forms an accommodating cavity; Keypad (2), the keypad (2) is located inside the accommodating cavity; Four-way ball head rocker (3), which is rotatably connected to the square housing (1) and is used to press down the button plate (2) after being driven. PCB pre-assembly (4), the PCB pre-assembly (4) is located below the square housing (1), including a circuit board (401) with a plurality of conductive pads on the top surface, and a plurality of metal springs (402) fixed on the circuit board (401). The metal spring (402) has an open state where it recovers its upward deformation and detaches from the corresponding two conductive pads when not under pressure, thus disconnecting the two conductive pads; and a closed state where it is driven downward by the four-way ball joint (3) to fit the corresponding two conductive pads, thus making the two conductive pads conductive.

2. The PCB pre-installed four-way rocker switch according to claim 1, characterized in that, The metal spring (402) is fixed to the circuit board (401) by a high-temperature resistant sticker.

3. The PCB pre-installed four-way rocker switch according to claim 1, characterized in that, The circuit board (401) is provided with a spring positioning groove for the metal spring (402) to enter.

4. The PCB pre-installed four-way rocker switch according to claim 1, characterized in that, The keypad (2) includes a connecting substrate (201), and a reset keycap (202) is provided on the connecting substrate (201) corresponding to the position of each pair of conductive pads.

5. The PCB pre-installed four-way rocker switch according to claim 4, characterized in that, The square housing (1) includes a housing base (101) and a housing cover (102) that covers the housing base (101) and cooperates with the housing base (101) to surround and form the accommodating cavity.

6. The PCB pre-installed four-way rocker switch according to claim 5, characterized in that, The housing base (101) is provided with a lower clearance groove (1011) corresponding to the position of each reset keycap (202).

7. The PCB pre-installed four-way rocker switch according to claim 5, characterized in that, The housing base (101) is provided with an upwardly protruding ball joint (1012), and the bottom of the four-way ball rocker (3) is provided with a spherical groove for the ball joint (1012) to be inserted.

8. The PCB pre-installed four-way rocker switch according to claim 5, characterized in that, The four-way ball joint (3) is provided with a horizontal pressure bar (301) for pressing down on the reset key (202) at the position of each of the reset key (202), and the housing cover (102) is provided with an upper clearance groove (1021) at the position of each of the horizontal pressure bars (301).

9. The PCB pre-installed four-way rocker switch according to claim 8, characterized in that, A flexible pressure block bracket (5) is provided between the four-way ball head rocker (3) and each of the reset keycaps (202), and each of the horizontal pressure rods (301) presses down on the corresponding reset keycap (202) through the flexible pressure block bracket (5).

10. The PCB pre-installed four-way rocker switch according to claim 5, characterized in that, The housing base (101) and the housing cover (102) are snap-fitted together.

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