Adjustable membrane switch circuit board assembly

Abstract

The utility model relates to the technical field of thin-film switch circuit boards, in particular to an adjustable thin-film switch circuit board assembly, which comprises a main body shell, a control circuit board is fixed on the inner bottom wall of the main body shell, a limiting plate is fixed on the main body shell close to the top end, a plurality of lifting rods are connected onto the limiting plate in a sliding manner, and the lifting rods are fixed on the main body shell. The lifting rod penetrates through the limiting plate and is matched with the control circuit board, an adjusting assembly is arranged in the main body shell, the adjusting assembly comprises a long rod, a through groove and a plurality of limiting blocks, and the limiting blocks are fixed on the inner bottom wall of the main body shell. Wherein a long rod, an inclined spring piece, a threaded rod, an adjusting column and the like are included, the position of the inclined spring piece in the through groove can be adjusted in a matched mode, and therefore the upward pressure of the inclined spring piece on the lifting rod is changed, the feedback force during finger pressing is changed, and the operation requirements of different users are met.

Description

Technical Field

[0001] This utility model relates to the field of membrane switch circuit board technology, specifically an adjustable membrane switch circuit board assembly. Background Technology

[0002] Membrane switch circuit boards are a type of flexible circuit assembly. Flexible circuit boards are printed circuits made of flexible insulating substrates. Flexible circuits provide excellent electrical performance, meet the design requirements of smaller and higher density installations, and also help reduce assembly steps and enhance reliability.

[0003] Existing membrane switch circuit board assemblies cannot adjust the pressure applied by the finger when driving the switch, and their applicability is limited due to the different user groups. To address these issues, this application presents an adjustable membrane switch circuit board assembly. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides an adjustable membrane switch circuit board assembly.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: an adjustable membrane switch circuit board assembly, comprising a main body shell, a control circuit board fixed on the inner bottom wall of the main body shell, a limit plate fixed near the top of the main body shell, a plurality of lifting rods slidably connected to the limit plate, the lifting rods passing through the limit plate and matching the control circuit board, an adjustment assembly provided inside the main body shell, the adjustment assembly comprising a long rod, a through groove, and a limit block, a plurality of limit blocks provided and fixed on the inner bottom wall of the main body shell, the limit block passing through the control circuit board, the through groove being formed on the lifting rod, the long rod passing through the through groove and slidingly connected to the limit block, an inclined spring sheet fixed at the top of the long rod at the through groove position, the inclined spring sheet contacting the inner top wall of the through groove, a threaded rod fixed at one end of the long rod, an adjustment column rotatably connected to the main body shell on one side of the threaded rod, the adjustment column being threadedly connected to the threaded rod, a slotted top cover fixed at the top of the main body shell, a contact membrane provided at the slotted position on the top cover.

[0008] To facilitate the rotation of the adjusting column, this utility model is improved by providing a cross-shaped rotating groove at the outer end of the adjusting column.

[0009] To reduce frictional damage, this invention is improved by having a roller shaft rotatably connected to the inner top wall of the through groove at the end that contacts the inclined spring sheet.

[0010] To prevent damage to the control circuit board, this utility model is improved by fixing a protective pad at the bottom end of the lifting rod.

[0011] To prevent the long rod from hitting the inner wall of the main body shell, the present invention is improved by providing a buffer groove on the inner side wall of the main body shell, into which the long rod can be inserted.

[0012] To facilitate disassembly and maintenance, this utility model is improved in that the top cover is fixed to the main body shell by bolts.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, the present invention provides an adjustable membrane switch circuit board assembly, which has the following advantages:

[0015] This adjustable membrane switch circuit board assembly, through the setting of adjustment components, including a long rod, a tilting spring plate, a threaded rod, and an adjustment column, can adjust the position of the tilting spring plate within the through slot, thereby changing the upward pressure of the tilting spring plate on the lifting rod, thus changing the feedback force when the finger is pressed, and adapting to the operating needs of different users. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the first main view structure of this utility model;

[0017] Figure 2 This is a first partial structural schematic diagram of the present invention in cross-section;

[0018] Figure 3 This is a second partial structural schematic diagram of the present invention in cross-section.

[0019] In the diagram: 1. Main shell; 2. Control circuit board; 3. Limiting plate; 4. Lifting rod; 5. Long rod; 6. Through slot; 7. Limiting block; 8. Inclined spring plate; 9. Threaded rod; 10. Adjusting column; 11. Top cover; 12. Contact membrane; 13. Cross-shaped rotating groove; 14. Roller shaft; 15. Protective pad; 16. Buffer groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-3An adjustable membrane switch circuit board assembly includes a main body shell 1. A control circuit board 2 is fixed on the inner bottom wall of the main body shell 1. A limit plate 3 is fixed near the top of the main body shell 1. Multiple lifting rods 4 are slidably connected to the limit plate 3. The lifting rods 4 pass through the limit plate 3 and match the control circuit board 2. An adjustment assembly is provided inside the main body shell 1. The adjustment assembly includes a long rod 5, a through groove 6, and a limit block 7. Multiple limit blocks 7 are provided and fixed on the inner bottom wall of the main body shell 1. The limit blocks 7 pass through the control circuit board 2. The through groove 6 is formed on the lifting rod 4. The long rod 5 passes through the through groove 6 and is slidably connected to the limiting block 7. The top of the long rod 5 is fixed with an inclined spring plate 8 at the position of the through groove 6. The inclined spring plate 8 contacts the inner top wall of the through groove 6. One end of the long rod 5 is fixed with a threaded rod 9. An adjusting column 10 is rotatably connected to the main body shell 1 on one side of the threaded rod 9. The adjusting column 10 is threadedly connected to the threaded rod 9. The top of the main body shell 1 is fixed with a top cover 11 with a slot. A contact membrane 12 is provided on the top cover 11 at the slot position.

[0022] When using this component, if the pressure of the membrane switch circuit board assembly needs to be adjusted, the adjusting column 10 is rotated. Since the adjusting column 10 is rotatably connected to the main body shell 1, it cannot move in position. The adjusting column 10 is threadedly connected to the threaded rod 9, which allows the threaded rod 9 to move left and right. When the threaded rod 9 drives the long rod 5 to move to the right, the long rod 5 drives the inclined spring plate 8 to move. The portion of the inclined spring plate 8 in the through groove 6 gradually decreases, so that the bottom end of the inclined spring plate 8 contacts the through groove 6. The deformation of the inclined spring plate 8 decreases, thereby reducing the reverse force pressure on the lifting rod 4 and reducing the force required for the finger to press down. Similarly, when the threaded rod 9 drives the long rod 5 to move to the left, the long rod 5 drives the inclined spring plate 8 to gradually enter the through groove 6 completely, and the deformation of the inclined spring plate 8 increases, thereby increasing the reverse force pressure on the lifting rod 4 and increasing the force required for the finger to press down.

[0023] In actual use, it was found that in order to make it easier to rotate the adjusting column 10, a cross groove 13 is provided on the outer end of the adjusting column 10 in this embodiment.

[0024] In actual use, it was found that the inclined spring sheet 8 was in contact with the inner top wall of the through groove 6, causing significant damage. In order to reduce the above problems, in this embodiment, a roller shaft 14 is rotatably connected to the end of the inner top wall of the through groove 6 that is in contact with the inclined spring sheet 8.

[0025] In actual use, it was found that the lifting rod 4 may be damaged by bumping into the control circuit board 2. In order to avoid the above problem, in this embodiment, the bottom end of the lifting rod 4 is fixed with a protective pad 15.

[0026] In actual use, it was found that the long rod 5 may bump into the inner wall of the main body shell 1 when it moves. In order to avoid the above problem, in this embodiment, a buffer groove 16 is provided on the inner side wall of the main body shell 1, and the long rod 5 can be inserted into the buffer groove 16.

[0027] In actual use, it was found that, in order to facilitate the disassembly and maintenance of the components, in this embodiment, the top cover 11 is fixed to the main body shell 1 by bolts.

[0028] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0029] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. 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 application, 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.

[0030] 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 application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable membrane switch circuit board assembly, comprising a main body housing (1), characterized in that: A control circuit board (2) is fixed on the inner bottom wall of the main body shell (1). A limit plate (3) is fixed near the top of the main body shell (1). Multiple lifting rods (4) are slidably connected to the limit plate (3). The lifting rods (4) pass through the limit plate (3) and match the control circuit board (2). An adjustment assembly is provided inside the main body shell (1). The adjustment assembly includes a long rod (5), a through groove (6), and a limit block (7). Multiple limit blocks (7) are provided and fixed on the inner bottom wall of the main body shell (1). The limit blocks (7) pass through the control circuit board (2). The through groove (6) is opened on the lifting rod (4). The long rod (5) passes through the through groove (6) and the limiting block (7) and is slidably connected. The top of the long rod (5) is fixed with an inclined spring plate (8) at the position of the through groove (6). The inclined spring plate (8) contacts the inner top wall of the through groove (6). One end of the long rod (5) is fixed with a threaded rod (9). An adjusting column (10) is rotatably connected to the main body shell (1) on one side of the threaded rod (9). The adjusting column (10) is threadedly connected to the threaded rod (9). The top of the main body shell (1) is fixed with a top cover (11) with a slot. A contact film (12) is provided on the top cover (11) at the slot position.

2. The adjustable membrane switch circuit board assembly according to claim 1, characterized in that: The outer end of the adjusting column (10) is provided with a cross-shaped groove (13).

3. The adjustable membrane switch circuit board assembly according to claim 1, characterized in that: A roller (14) is rotatably connected to the inner top wall of the through groove (6) at the end that contacts the inclined spring sheet (8).

4. The adjustable membrane switch circuit board assembly according to claim 1, characterized in that: The bottom end of the lifting rod (4) is fixed with a protective pad (15).

5. An adjustable membrane switch circuit board assembly according to claim 1, characterized in that: A buffer groove (16) is provided on the inner side wall of the main shell (1), and the long rod (5) can be inserted into the buffer groove (16).

6. An adjustable membrane switch circuit board assembly according to claim 1, characterized in that: The top cover (11) is fixed to the main shell (1) by bolts.

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