Membrane switch with high durability

Abstract

The utility model discloses a high-durability membrane switch, comprising a circuit board which is arranged in a rectangular shape, and the surface of the circuit board is provided with a metal dome for controlling the switch-on and switch-off of the circuit board; the panel is arranged on the surface of the circuit board, and bulge keys covering the metal domes are arranged on the panel in a bulging manner; circular mounting rings are arranged on the periphery of the bulge key, a top ring is arranged on the outer wall of the upper end of each mounting ring, a bottom ring for the top ring to press is arranged on the panel, a dovetail block is arranged on the lower end face of each top ring, and a groove for the dovetail block to be embedded and a dovetail groove connected with the groove and allowing the dovetail block to be embedded in a sliding mode are formed in the upper end face of each bottom ring. Compared with the prior art, the membrane switch has the following advantages and effects: through arranging the independently disassembled and assembled bump button and adopting a rotary clamping structure, the independent disassembly and replacement of the bump button are realized, so that the bump button can be replaced in time after being abraded, the normal use of the membrane switch is not influenced, the durability of the membrane switch is improved, and the service life of the membrane switch is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of switch element, especially a kind of high durability membrane switch. BACKGROUND

[0002] Membrane switch is a kind of electronic switch type, it realizes the closure or disconnection of circuit by one or more layers of flexible material. This switch is usually used in the application scene needing light touch operation, with waterproof, dustproof, easy to clean and flexible shape design advantages. They are widely used in various consumer electronics, industrial control equipment and medical equipment and other fields.

[0003] The conventional membrane switch is usually directly pressed the bulge button on the top panel when using, with long time use, the position of bulge button will appear wear and tear even wear phenomenon, affect the durability of membrane switch, and there is room for improvement. UTILITY MODEL CONTENT

[0004] In view of the deficiencies in the prior art, the utility model aims at providing a kind of high durability membrane switch, with the effect of improving durability.

[0005] The above technical purpose of the utility model is realized by the following technical scheme: a kind of high durability membrane switch, comprising:

[0006] Circuit board, it is arranged in rectangle, and surface is provided with the potzai piece of controlling its opening and closing;

[0007] Panel, it is arranged on the surface of the circuit board, and the bulge button of the panel is arranged with the potzai piece;

[0008] The periphery of the bulge button is provided with the mounting ring of circle, the upper end outer wall of the mounting ring is provided with the top ring, the bottom ring of the panel is provided with the bottom ring for the top ring to press, the lower end surface of the top ring is provided with swallow-tail block, the upper end surface of the bottom ring is provided with the recess for the swallow-tail block to embed and the swallow-tail groove connected with the recess for the swallow-tail block to slide and embed.

[0009] In a preferred example, the utility model can be further configured as: the top ring is vertically provided with needle hole extending into the swallow-tail block.

[0010] In a preferred example, the utility model can be further configured as: the lower end surface of the swallow-tail block is provided with protrusion, and the bottom wall of the swallow-tail groove is provided with recess for the protrusion to embed.

[0011] In a preferred example, the utility model can be further configured as: the inner wall of the bottom ring is provided with sealing ring, and the side wall of the mounting ring is provided with sealing groove for the sealing ring to be clamped and embedded.

[0012] The utility model discloses in a preferable example can be further configured as: the surface of the bulge button is provided with a plurality of friction convex points.

[0013] The utility model discloses in a preferable example can be further configured as: the installation ring is embedded with the luminous ring.

[0014] The utility model discloses in a preferable example can be further configured as: the four around of panel is round angle shape setting.

[0015] Summarized above, the utility model has following beneficial effect:

[0016] 1. by setting up independent dismounting's bulge button, and adopting rotary joint structure, realizes the individual dismounting and replacement of bulge button, makes the bulge button wear and tear after time replacement, will not influence the normal use of membrane switch, improves the durability and service life of membrane switch;

[0017] 2. by setting up the cooperation of sealing ring and sealing groove, realizes the sealing between bulge button and panel, avoids appearing seepage phenomenon, guarantees the durability and service life of membrane switch. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is structural schematic diagram of example;

[0019] Figure 2 It is connection relation schematic diagram of example;

[0020] Figure 3 It is connection relation schematic diagram of top ring and bottom ring of example.

[0021] Sign significance: 1, circuit board;11, pot piece;2, panel;21, bulge button;22, friction convex point;3, installation ring;31, luminous ring;4, top ring;41, dovetail block;42, pinhole;43, convex;5, bottom ring;51, recess;52, dovetail groove;53, recess hole;6, sealing ring;7, sealing groove. DETAILED DESCRIPTION

[0022] The utility model makes further detailed description in combination with drawings.

[0023] As Figure 1 , Figure 2 The utility model discloses a high durability's membrane switch, including circuit board 1 and panel 2.

[0024] As Figure 1 , Figure 2 The utility model discloses a high durability's membrane switch, including circuit board 1 and panel 2.

[0025] As shown in Figure 1 , Figure 2 , the bulge on the panel 2 is provided with a bulge key 21 covered with a pot piece 11, and the surface of the bulge key 21 is provided with a plurality of friction bumps 22 to increase the comfort when pressed and avoid the phenomenon of slipping.

[0026] As shown in Figure 2 , Figure 3 , the periphery of the bulge key 21 is provided with a circular mounting ring 3, and the mounting ring 3 is embedded with a luminous ring 31 for providing indication at night. The outer wall of the upper end of the mounting ring 3 is provided with a top ring 4, and the panel 2 is provided with a bottom ring 5 for pressing the top ring 4.

[0027] As shown in Figure 2 , Figure 3 , the inner wall of the bottom ring 5 is provided with a sealing ring 6, and the side wall of the mounting ring 3 is provided with a sealing groove 7 for the sealing ring 6 to be embedded and connected, so as to increase the sealing between the panel 2 and the bulge key 21, avoid the phenomenon of water seepage, and ensure the durability and service life of the membrane switch.

[0028] As shown in Figure 2 , Figure 3 , the lower end surface of the top ring 4 is provided with a dovetail block 41, the upper end surface of the bottom ring 5 is provided with a recess 51 for the dovetail block 41 to be embedded and a dovetail groove 52 connected to the recess 51 and for the dovetail block 41 to be embedded and slid, and the top ring 4 is vertically provided with a pinhole 42 extending into the dovetail block 41. The lower end surface of the dovetail block 41 is provided with a protrusion 43, and the bottom wall of the dovetail groove 52 is provided with a recess 53 for the protrusion 43 to be embedded.

[0029] When the panel 2 and the bulge key 21 need to be assembled, the bulge key 21 and the mounting ring 3 are embedded in the hole on the panel 2, the dovetail block 41 is embedded in the recess 51, and then the mounting ring 3 is pressed to embed the sealing ring 6 in the sealing groove 7.

[0030] Then the tool is inserted into the pinhole 42, and the mounting ring 3 is rotated to slide the dovetail block 41 into the dovetail groove 52, and the protrusion 43 on the dovetail block 41 is embedded in the recess 53 in the dovetail groove 52, so as to realize the clamping and fixing of the dovetail block 41, thereby completing the installation of the bulge key 21.

[0031] Finally, the panel 2 is bonded and fixed on the circuit board 1, the bulge key 21 is covered with the pot piece 11, and the pot piece 11 is pressed by pressing the bulge key 21, thereby realizing the on-off control of the circuit board 1.

[0032] When the thin film key is worn, the tool can be inserted into the pin hole 42, then the mounting ring 3 is controlled to rotate, the dovetail block 41 is slid from the dovetail groove 52 into the groove 51, the damaged bulge key 21 is disassembled, a new bulge key 21 is installed, and the maintenance and replacement are completed.

[0033] Therefore, by setting the independently disassembled bulge key 21 and adopting the rotating clamping structure, the separate disassembly and replacement of the bulge key 21 are realized, the worn bulge key 21 can be replaced in time, the normal use of the thin film switch is not affected, and the durability and service life of the thin film switch are improved.

[0034] The specific embodiments are only an interpretation of the utility model, and are not a limitation of the utility model, and the person skilled in the art can make modifications without creative contribution according to the needs after reading the specification, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.

Claims

1. A high durability membrane switch characterized by: The utility model relates to a kind of button for mobile phone, including: Circuit board (1), rectangularly arranged, and surface is provided with the pot piece (11) of controlling its opening and closing; Panel (2), arranged on the surface of the circuit board (1), the bulge button (21) of the bulge of the panel (2) is provided with cover the pot piece (11); The periphery of the bulge button (21) is provided with the mounting ring (3) of circular, the outer wall of the upper end of the mounting ring (3) is provided with top ring (4), the panel (2) is provided with the bottom ring (5) for the top ring (4) pressing, the lower end surface of the top ring (4) is provided with dovetail block (41), the upper end surface of the bottom ring (5) is provided with recess (51) for the dovetail block (41) embedding and dovetail groove (52) being connected the recess (51) and for the dovetail block (41) sliding embedding.

2. A high durability membrane switch according to claim 1, characterized in that: The top ring (4) is vertically provided with needle hole (42) extending into the dovetail block (41).

3. A high durability membrane switch according to claim 2, wherein: The lower end surface of the dovetail block (41) is provided with protrusion (43), the bottom wall of the dovetail groove (52) is provided with recess (53) for the protrusion (43) embedding.

4. A high durability membrane switch according to claim 3, wherein: The inner wall of the bottom ring (5) is provided with sealing ring (6), the side wall of the mounting ring (3) is provided with sealing groove (7) for the sealing ring (6) clamping embedding.

5. A high durability membrane switch according to claim 1, wherein: The surface of the bulge button (21) is provided with several friction convex points (22).

6. A high durability membrane switch according to claim 1, wherein: The mounting ring (3) is embedded with night light ring (31).

7. A high durability membrane switch according to claim 1, wherein: The periphery of the panel (2) is provided with rounded corner shape.

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