Membrane key structure

Abstract

The utility model discloses a film key structure, which comprises a key cap assembly, a middle piece, a middle plate piece, a silica gel pad, a film piece and an iron plate piece which are sequentially arranged from top to bottom, the middle sub-part comprises a shaft core, and a silica gel protrusion corresponding to the shaft core is arranged on the side, facing the middle sub-part, of the silica gel pad. The middle component further comprises an abutting part, the abutting part is arranged on one side of the shaft core, the abutting part extends towards the silica gel pad, and the free end of the abutting part is closer to the silica gel pad than the shaft core; when the key cap assembly is pressed downwards, the shaft core can be driven to abut against and press the silica gel protrusion, the abutting portion abuts against the peripheral side of the silica gel protrusion, and the technical scheme aims at prolonging the service life of the key.

Description

Technical Field

[0001] The utility model relates to the technical field of keys, in particular to a film key structure. Background Art

[0002] In the context of the rapid development of modern information technology, keyboards are important devices for human-computer interaction, and their performance and stability are crucial to the user experience. The mainstream keyboard types on the market currently include membrane keys, Harima keyboards, and mechanical keyboards.

[0003] Membrane keys are dustproof, water vapor-proof and oil smoke-proof, and they have good adaptability in harsh environments. The key structure combines the membrane with the circuit board to form a closed key unit, which effectively prevents the intrusion of external impurities. However, the durability of membrane keys is relatively limited, and their service life is often difficult to meet the requirements for high-intensity and long-term use scenarios. Utility Model Content

[0004] The main purpose of the utility model is to provide a membrane key structure, aiming to increase the service life of the key.

[0005] To achieve the above-mentioned purpose, the membrane key structure proposed by the utility model comprises a key cap assembly, a neutron part, a middle plate part, a silicone pad, a membrane part and an iron plate part which are sequentially installed from top to bottom;

[0006] The neutron element comprises an axis core, and a silicone protrusion is arranged on a side of the silicone pad facing the neutron element corresponding to the axis core;

[0007] The neutron component further includes an abutment portion, which is disposed on one side of the shaft core, extends toward the silicone pad, and a free end of the abutment portion is closer to the silicone pad than the shaft core;

[0008] The key cap assembly is pressed from below to drive the shaft core to abut against and press the silicone protrusion, and the abutting portion abuts against the peripheral side of the silicone protrusion.

[0009] In some embodiments of the present invention, the horizontal cross-section of the abutment portion is an arc-shaped structure, and the abutment portion is spaced apart from the shaft core, and the distance between the abutment portion and the silicone pad is equal to the distance between the shaft core and the silicone protrusion.

[0010] In some embodiments of the present invention, the abutting portions are relatively arranged on two sides of the shaft core. In some embodiments of the present invention, the keycap assembly includes a keycap member and a keycap cover sleeved on the keycap member.

[0011] In some embodiments of the present invention, a dust cover is further provided between the middle plate and the key cap assembly, and two ends of the dust cover are respectively sealed and mounted on the key cap assembly and the middle plate.

[0012] In some embodiments of the present invention, the dust cover is cylindrical, and the diameter of the dust cover gradually decreases from the key cap assembly toward the middle plate.

[0013] In some embodiments of the utility model, the dustproof sleeve includes a first sleeve portion, a second sleeve portion and a third sleeve portion; the diameter of the first sleeve portion is larger than that of the third sleeve portion, the second sleeve portion is conical, and the diameters of both ends of the second sleeve portion are respectively connected to the first sleeve portion and the second sleeve portion, and the two ends of the second sleeve portion are respectively connected to the first sleeve portion and the second sleeve portion.

[0014] The technical solution of the utility model realizes signal reception and transmission between the film and the iron plate by pressing the silicone pad, realizes the positioning and installation between the neuter component and the silicone pad by the middle plate component, and realizes directional pressing of the neuter component toward the silicone pad by pressing the key cap assembly; the silicone protrusion is set to realize corresponding setting of the shaft core of the neuter component, so that when the shaft core presses the silicone protrusion from the bottom, the input of the corresponding signal can be realized, and the abutment part is set, by setting the abutment part, when the shaft core abuts and presses the silicone protrusion, the abutment part abuts against the peripheral side of the silicone protrusion, which can prevent the silicone protrusion from being over-pressed, thereby protecting the stability of the pressing structure between the silicone pad and the film and the iron plate, and improving the service life. Different from the single pressing structure of the conventional membrane keyboard, the abutment part is set to assist in abutting the silicone pad while ensuring the pressing of the shaft core on the silicone protrusion, thereby avoiding excessive pressing of the shaft core. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0016] Figure 1 This is a schematic diagram of the structure of the membrane keypad structure of the utility model;

[0017] Figure 2 It is a structural explosion diagram of the membrane key structure of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the neutron component of the utility model.

[0019] Description of Figure Numbers:

[0020] 100, keycap assembly; 110, keycap member; 120, keycap cover; 200, neutron member; 210, shaft core; 220, abutment member; 300, middle plate member; 400, silicone pad; 410, silicone protrusion; 500, film member; 600, iron plate member; 700, dust cover; 710, first set; 720, second set; 730, third set;

[0021] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0022] 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.

[0023] 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.

[0024] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0025] See attached Figure 1-3 The utility model provides a membrane key structure, including a key cap assembly 100, a neutron component 200, a middle plate component 300, a silicone pad 400, a membrane component 500 and an iron plate component 600 which are sequentially installed from top to bottom;

[0026] The neutron element 200 includes an axis core 210, and a silicone protrusion 410 is provided on a side of the silicone pad facing the neutron element 200 corresponding to the axis core 210;

[0027] The neutron element 200 further includes an abutment portion, which is disposed on one side of the shaft core 210 and extends toward the silicone pad 400 , and a free end of the abutment portion is closer to the silicone pad 400 than the shaft core 210 ;

[0028] The keycap assembly 100 is pressed from the bottom to drive the shaft core 210 to abut against the pressing silicone protrusion 410 , and the abutting portion abuts against the peripheral side of the silicone protrusion 410 .

[0029] Based on the above technical features, the signal reception and transmission between the film and the iron plate is realized by pressing the silicone pad 400, the middle plate 300 realizes the positioning and installation between the neutron component 200 and the silicone pad 400, and the directional pressing of the neutron component 200 toward the silicone pad 400 is realized by pressing the key cap assembly 100; the corresponding setting is realized by setting the silicone protrusion 410 to realize the corresponding setting of the shaft core 210 of the neutron component 200, so that when the shaft core 210 presses the silicone protrusion 410 from the bottom, the corresponding signal input can be realized, and By setting the abutment portion, when the shaft core 210 abuts and presses the silicone protrusion 410, the abutment portion abuts against the peripheral side of the silicone protrusion 410, which can prevent overpressure of the silicone protrusion 410, thereby protecting the stability of the pressing structure between the silicone pad 400 and the film and the iron plate, and improving the service life. Different from the single pressing structure of a conventional membrane keyboard, the abutment portion is set to assist in abutting the silicone pad 400 while ensuring that the shaft core 210 presses the silicone protrusion 410, thereby avoiding excessive pressing of the shaft core 210.

[0030] Furthermore, the horizontal cross-section of the abutting portion is an arc-shaped structure, and the abutting portion is spaced apart from the shaft core 210. The distance between the abutting portion and the silicone pad 400 is equal to the distance between the shaft core 210 and the silicone protrusion 410, ensuring that the abutting portion can abut against the silicone pad 400 while the shaft core 210 is pressed, thereby avoiding excessive pressing of the shaft core 210. At the same time, by setting an arc-shaped structure, better contact with the silicone pad 400 is achieved.

[0031] Specifically, the abutting portions are relatively arranged on two sides of the shaft core 210 to increase the contact area between the abutting portions and the silicone pad 400 , while increasing the structural stability of the neutron component 200 and ensuring the balance of pressing.

[0032] In this embodiment, the keycap assembly 100 includes a keycap member 110 and a keycap cover 120 sleeved on the keycap member 110 , which protects the keycap member 110 and realizes the pressing transmission of the sub-member 200 through the keycap member 110 .

[0033] A dust cover 700 is further provided between the middle plate 300 and the key cap assembly 100 , and both ends of the dust cover 700 are respectively sealed and installed on the key cap assembly 110 and the middle plate to achieve sealing between the key cap assembly 100 and the middle plate 300 .

[0034] In this embodiment, the dust cover 700 is cylindrical, and the diameter of the dust cover 700 gradually decreases from the key cap assembly 100 toward the middle plate, so that the dust cover can be folded and deformed when the key cap assembly 100 is pressed, thereby improving the feel of use.

[0035] Specifically, the dust cover 700 includes a first cover portion 710, a second cover portion 720 and a third cover portion 730; the diameter of the first cover portion 710 is larger than that of the third cover portion 730, the second cover portion 720 is arranged in a conical shape, and the diameters of the two ends of the second cover portion 720 are respectively connected to the first cover portion 710 and the second cover portion 720, and the two ends of the second cover portion 720 are respectively connected to the first cover portion 710 and the second cover portion 720, so that when the keycap assembly 100 is pressed, the first cover portion 710 is inclinedly guided by the second cover portion 720, and the folding from the third cover portion 730 is realized, thereby realizing the pressing and rebound effects of the keycap.

[0036] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A membrane key structure, characterized in that: It includes a key cap assembly, a neutron part, a middle plate part, a silicone pad, a film part and an iron plate part which are installed in sequence from top to bottom; The neutron element comprises an axis core, and a silicone protrusion is arranged on a side of the silicone pad facing the neutron element corresponding to the axis core; The neutron component further includes an abutment portion, which is disposed on one side of the shaft core, extends toward the silicone pad, and a free end of the abutment portion is closer to the silicone pad than the shaft core; The key cap assembly is pressed from below to drive the shaft core to abut against and press the silicone protrusion, and the abutting portion abuts against the peripheral side of the silicone protrusion.

2. The membrane key structure according to claim 1, characterized in that: The horizontal cross section of the abutting portion is an arc-shaped structure, and the abutting portion is spaced apart from the shaft core, and the distance between the abutting portion and the silicone pad is equal to the distance between the shaft core and the silicone protrusion.

3. The membrane key structure according to claim 2, characterized in that: The abutting portions are relatively arranged on two sides of the shaft core.

4. The membrane key structure according to claim 1, characterized in that: The keycap assembly comprises a keycap piece and a keycap cover sleeved on the keycap piece.

5. The membrane key structure according to claim 4, characterized in that: A dust cover is also provided between the middle plate and the key cap assembly, and two ends of the dust cover are respectively sealed and installed on the key cap and the middle plate.

6. The membrane key structure according to claim 5, characterized in that: The dust cover is cylindrical, and the diameter of the dust cover gradually decreases from the key cap assembly toward the middle plate.

7. The membrane key structure according to claim 6, characterized in that: The dustproof sleeve includes a first sleeve portion, a second sleeve portion and a third sleeve portion; the diameter of the first sleeve portion is larger than that of the third sleeve portion, the second sleeve portion is arranged in a conical shape, and the diameters of the two ends of the second sleeve portion are respectively connected to the first sleeve portion and the second sleeve portion, and the two ends of the second sleeve portion are respectively connected to the first sleeve portion and the second sleeve portion.

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