Structure capable of improving hand feeling, assembling efficiency and yield of space key of ultrathin keyboard

Abstract

The utility model discloses a structure capable of improving the hand feeling, the assembly efficiency and the yield of an ultrathin keyboard space key, which comprises a key cap, and a plurality of clamping hook parts which extend downwards from the periphery and the middle part of the bottom end of the key cap; comprising two balance rods which are symmetrically arranged below the keycap; comprising a reinforcing sheet, the reinforcing sheet is arranged in a space defined by the balance rod and the key cap, the periphery and the middle of the reinforcing sheet are bent downwards to form a plurality of bent parts corresponding to the clamping hook parts, and the bent parts are correspondingly clamped in the clamping hook parts. According to the utility model, when the internal structure of the key cap is designed, unequal numbers of clamping hook parts are added at reasonable positions in the key cap, and the bending parts are added at corresponding positions of the reinforcing sheet, so that the reinforcing sheet can be completely fixed in the key cap only by aligning the bending parts of the reinforcing sheet with the clamping hook parts and pressing the reinforcing sheet into the key cap by using a certain force during assembly, and the key cap is convenient to assemble. Compared with a traditional fixing mode, the cost can be reduced while the combination strength of the reinforcing sheet and the keycap and the product percent of pass are ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of keyboard key caps, in particular to a structure capable of improving the hand feel, assembly efficiency and yield of a space bar on an ultra-thin keyboard. Background Art

[0002] The space bar of the currently sold ultra-thin laptop keyboards is only 0.45mm-0.5mm thick due to the ultra-thin requirement. The key cap is seriously insufficient in strength and it is difficult to maintain a good pressing feel on the edge of the key cap. Therefore, most of them will add a stainless steel reinforcement sheet inside the key cap to increase the overall strength of the space bar and keep the feel around the key cap good. Currently, the reinforcement sheet is usually fixed to the back of the key cap by double-sided adhesive or hot melt. The disadvantages of these two methods are as follows:

[0003] 1. Use double-sided adhesive to connect: After a long period of use, the double-sided adhesive may fall off, resulting in a short service life; in addition, the cost of using the adhesive and the processing cost of the adhesive will increase;

[0004] 2. Use hot melt connection: If the keycap material and raw material supplier change slightly, the temperature during hot melt will be difficult to control, which will cause inadequate hot melt or cracking of the keycap during hot melt, greatly increasing the defective rate of the product and increasing the cost of purchasing a hot melt machine.

[0005] In view of the shortcomings of these two connection methods, this patent proposes a structure that can improve the feel of the space bar of an ultra-thin keyboard as well as the assembly efficiency and yield. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, the utility model aims to provide a structure that can improve the feel of the space bar of an ultra-thin keyboard and the assembly efficiency and yield.

[0007] The technical solution adopted by the utility model is as follows: a structure that can improve the feel of the space bar of an ultra-thin keyboard and the assembly efficiency and yield, including a keycap, wherein a plurality of hook portions are extended downward around the bottom end and the middle portion thereof; a balance rod, which is two and symmetrically arranged below the keycap; and a reinforcing sheet, which is arranged in a space formed by the balance rod and the keycap, wherein the surrounding and middle portions of the reinforcing sheet are bent downward to form a plurality of bending portions corresponding to the hook portions, and the bending portions are correspondingly engaged in the hook portions to fix the reinforcing sheet to the bottom end of the keycap.

[0008] In a preferred embodiment, the hook portion includes two symmetrically arranged hook bodies, a limited area with an upper opening is formed between the two hook bodies and the key cap, and opposite ends of the two hook bodies are provided with inclined surfaces inclined downward.

[0009] In a preferred embodiment, the bending portion includes two symmetrically arranged and bent 90° folding surfaces, a U-shaped structure is formed between the bending portion and the reinforcing plate, the width of the bending portion is greater than the distance between the tail ends of the two inclined surfaces and is less than or equal to the width of the limited area, and the bending portion is accommodated within the limited area.

[0010] In a preferred embodiment, the bottom end of the key cap is recessed inward to form an accommodating space for accommodating the balance bar and the reinforcement sheet.

[0011] In a preferred embodiment, the bottom wall of the keycap further extends downwardly to have a plurality of fixing ribs with notches, and the balance bar can be pivotally buckled in the notches of the fixing ribs.

[0012] In a preferred embodiment, the reinforcement sheet is made of stainless steel.

[0013] In a preferred embodiment, it also includes a base plate, which is arranged below the key cap, and positioning ribs with limiting holes are formed on both sides of the base plate extending upward, and the balance bar hook portion is pivotally connected to the limiting hole.

[0014] In a preferred embodiment, it further comprises scissor feet, wherein the scissor feet are arranged between the key cap and the substrate, and the opposite ends of the key cap and the substrate are respectively provided with connecting ribs for connecting the scissor feet.

[0015] In a preferred embodiment, it also includes a conductive film connected to the substrate, and the conductive film is provided with through grooves for the scissor legs and the positioning ribs to pass through.

[0016] To sum up, due to the adoption of the above-mentioned technical scheme, the beneficial effect of the utility model is: when designing the internal structure of the keycap, different numbers of hook parts are added at reasonable positions inside the keycap, and at the same time, a bending part is added at the corresponding position of the reinforcement plate. During assembly, it is only necessary to align the bending part of the reinforcement plate with the hook part, and use a certain force to press it into the keycap, so that the reinforcement plate can be completely fixed in the keycap. Compared with the traditional fixing method, while ensuring the combined strength of the reinforcement plate and the keycap and the product qualification rate, it can also reduce the use and production costs, and is worthy of promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall explosion three-dimensional structure of the utility model;

[0018] Figure 2 It is a three-dimensional structural schematic diagram of the key cap and the reinforcing sheet combination in the utility model;

[0019] Figure 3 for Figure 2 Schematic diagram of the enlarged structure at a in the middle;

[0020] Figure 4 It is a schematic diagram of the planar structure of the key cap and the reinforcing sheet combination in the utility model;

[0021] Figure 5 for Figure 4 Schematic diagram of the cross-sectional plane structure at AA in the middle;

[0022] Figure 6 for Figure 4 Schematic diagram of the cross-sectional plane structure at BB in the middle;

[0023] Figure 7 for Figure 5 Schematic diagram of the enlarged structure at b in the middle;

[0024] Figure 8 It is a schematic diagram of the overall planar structure of the utility model.

[0025] Markings in the figure: 1-substrate, 2-conductive film, 3-balance bar, 4-scissor foot, 5-reinforcement sheet, 501-bending portion, 6-key cap, 601-fixing rib, 602-hook portion, 6021-inclined surface, 603-accommodating space. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0027] A structure that can improve the feel of the space bar of an ultra-thin keyboard and the assembly efficiency and yield, referring to Figure 1-8 , including a keycap 6, with multiple hook portions 602 extending downward around the bottom and the middle, including a balance bar 3, which is two and symmetrically arranged below the keycap 6, and also including a reinforcement sheet 5, which is arranged in the space formed by the balance bar 3 and the keycap 6. By adding the balance bar 3 and the reinforcement sheet 5 in the keycap 6, the overall strength of the space bar is increased and the force can be transmitted more evenly after being compressed, and the purpose of good hand feel can be achieved.

[0028] Furthermore, the surrounding and middle parts of the reinforcing sheet 5 are bent downward to form a plurality of bending parts 501 corresponding to the hook parts 602, and the bending parts 501 are correspondingly connected in the hook parts 602 to fix the reinforcing sheet 5 to the bottom end of the keycap 6. When designing the internal structure of the space bar cap 6, different numbers of hook parts 602 are added to reasonable positions inside the keycap 6, and bending parts 501 are added to corresponding positions of the reinforcing sheet 5. When assembling, it is only necessary to align the bending part 501 of the reinforcing sheet 5 with the hook part 602, and use a certain force to press the reinforcing sheet 5 into the keycap 6, so that the reinforcing sheet 5 can be completely fixed in the keycap 6. Compared with the traditional fixing method, while ensuring the combined strength of the reinforcing sheet 5 and the keycap 6 and the product qualification rate, it can also reduce the use cost and production cost.

[0029] Moreover, snap-fit ​​structures are provided around and in the middle, which can ensure the connection strength between the reinforcing sheet 5 and the key cap 6 after assembly.

[0030] Furthermore, the reinforcing sheet 5 is made of stainless steel, and may also be an aluminum plate, a galvanized iron plate, etc., which is not limited here.

[0031] Furthermore, the hook portion 602 includes two symmetrically arranged hook bodies, a limited area with an upper opening is formed between the two hook bodies and the key cap 6, the bending portion 501 includes two symmetrically arranged and 90° bent surfaces, a U-shaped structure is formed between the bending portion 501 and the reinforcing sheet 5, and the opposite ends of the two hook bodies are provided with a downwardly inclined inclined surface 6021, the width of the bending portion 501 is greater than the distance between the tail ends of the two inclined surfaces 6021 and less than or equal to the width of the limited area, and the bending portion 501 is accommodated in the limited area When the above design is clamped, the bending portion 501 is placed at the opening of the two hooks and then pressed inward. Due to the deformation ability of the key cap 6 and the bending portion 501 itself, the bending portion 501 can be pushed into the limited area along the opening. Under the influence of the bending portion 501 and the size of the limited area, the bending portion 501 can be confined in the limited area, thereby completing the clamping operation. At the same time, the inclined surface 6021 can facilitate the bending portion 501 to be pushed into the limited area, which is more labor-saving when pushing.

[0032] It should be noted that the folded surface of the edge of the reinforcing sheet 5 is continuous. Firstly, it can reduce the bending process. Secondly, the square structure formed by the edge of the reinforcing sheet 5 can also help limit the position of the components placed in the reinforcing sheet 5.

[0033] Furthermore, the bottom end of the keycap 6 is recessed inward to form an accommodation space 603 for accommodating the balance bar 3 and the reinforcement sheet 5. The above design makes the overall thickness of the space bar basically the same as the thickness of the keycap 6, which can make the keyboard as a whole thinner.

[0034] Furthermore, the bottom wall of the keycap also extends downwardly with multiple fixed ribs 601 with notches, and the balance bar 3 can be pivotally buckled in the notches of the fixed ribs 601. The fixed ribs 601 can assist in locating the installation position of the balance bar 3 and can also play an auxiliary guiding role in the pivoting of the balance bar 3.

[0035] Furthermore, it also includes a base plate 1, which is arranged below the key cap 6. Positioning ribs with limiting holes are extended upward on both sides of the base plate 1, and the hook part of the balance bar 3 is pivotally connected to the limiting hole.

[0036] Furthermore, it also includes scissor feet 4, which are arranged between the keycap 6 and the substrate 1. The opposite ends of the keycap 6 and the substrate 1 are respectively provided with connecting ribs for connecting the scissor feet 4. By adding the scissor feet 4, the user can get a good and smooth feel no matter where the key is pressed, and the silent effect of pressing the key can be additionally improved.

[0037] Among them, the scissor foot 4 is a commonly used accessory in existing keyboards, and the specific structure is not explained again.

[0038] Furthermore, it also includes a conductive film 2, which is connected to the substrate 1. The conductive film 2 is provided with a through groove for the scissor legs 4 and the positioning ribs to pass through, wherein the conductive film 4 is integrated with a touch switch.

[0039] The reinforcing sheet 5 is also provided with holes for the connecting ribs on the key cap 6 and the trigger switch to pass through.

[0040] It should be noted that the above design can be applied not only to the space bar, but also to special long keys or other key caps, without limitation here.

[0041] To summarize, different numbers of hook portions 602 are added to reasonable positions inside the keycap 6, and at the same time, a bending portion 501 is added to the corresponding position of the reinforcing sheet 5. During assembly, it is only necessary to align the bending portion 501 of the reinforcing sheet 5 with the hook portion 602 and press it into the keycap 6 with a certain amount of force, so that the reinforcing sheet 5 can be completely fixed in the keycap 6. Compared with the traditional fixing method, while ensuring the combined strength of the reinforcing sheet 5 and the keycap 6 and the product qualification rate, it can also reduce the use and production costs, and is worthy of promotion.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A structure that can improve the feel of the space bar of an ultra-thin keyboard and the assembly efficiency and yield, characterized in that: include: The key cap has a plurality of hook portions extending downward around the bottom end and the middle portion thereof; Two balancing bars are symmetrically arranged under the keycap; A reinforcing sheet is arranged in the space formed by the balance bar and the keycap, and the surrounding and middle parts of the reinforcing sheet are bent downward to form a plurality of bending parts corresponding to the hook parts, and the bending parts are correspondingly engaged in the hook parts to fix the reinforcing sheet at the bottom end of the keycap.

2. A structure capable of improving the feel, assembly efficiency and yield of the space bar of an ultra-thin keyboard as claimed in claim 1, characterized in that: The hook portion comprises two symmetrically arranged hook bodies, a limited area with an upper opening is formed between the two hook bodies and the key cap, and opposite ends of the two hook bodies are provided with inclined surfaces inclined downward.

3. A structure capable of improving the feel, assembly efficiency and yield of the space bar of an ultra-thin keyboard as claimed in claim 2, characterized in that: The bending portion includes two symmetrically arranged and bent 90° folding surfaces, a U-shaped structure is formed between the bending portion and the reinforcing sheet, the width of the bending portion is greater than the distance between the tail ends of the two inclined surfaces and is less than or equal to the width of the limited area, and the bending portion is accommodated in the limited area.

4. A structure capable of improving the feel, assembly efficiency and yield of the space bar of an ultra-thin keyboard as claimed in claim 1, characterized in that: The bottom end of the key cap is recessed inward to form an accommodating space for accommodating the balance bar and the reinforcement sheet.

5. The structure for improving the feel, assembly efficiency and yield of the space bar of an ultra-thin keyboard as claimed in claim 1, characterized in that: The bottom wall of the key cap is also downwardly extended with a plurality of fixing ribs with notches, and the balance bar can be pivotally buckled in the notches of the fixing ribs.

6. The structure for improving the feel of the space bar of an ultra-thin keyboard and the assembly efficiency and yield rate as claimed in claim 1, characterized in that: The reinforcement sheet is made of stainless steel.

7. The structure for improving the feel, assembly efficiency and yield of the space bar of an ultra-thin keyboard as claimed in claim 1, characterized in that: It also includes a base plate, which is arranged below the key cap. Positioning ribs with limiting holes are formed on both sides of the base plate extending upward. The balance bar hook part is pivotally connected to the limiting hole.

8. The structure for improving the feel, assembly efficiency and yield of the space bar of an ultra-thin keyboard as claimed in claim 7, characterized in that: It also includes scissor feet, which are arranged between the key cap and the base plate, and the opposite ends of the key cap and the base plate are respectively provided with connecting ribs for connecting the scissor feet.

9. A structure capable of improving the feel, assembly efficiency and yield of the space bar of an ultra-thin keyboard as claimed in claim 8, characterized in that: It also includes a conductive film connected to the substrate, and the conductive film is provided with through grooves for the scissor legs and the positioning ribs to pass through.

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