Computer keyboard with good anti-falling performance

Abstract

The utility model relates to the technical field of keyboards, in particular to a computer keyboard with good anti-falling performance, which comprises a lower shell and a PCB (printed circuit board) arranged in the lower shell, an upper shell is arranged on the lower shell, a keycap is arranged on the PCB through a key shaft, a limiting plate is further arranged in the lower shell, and the limiting plate is arranged on the lower shell. The four corners of the lower shell are slidably connected with movable sleeves, the bottom end of each movable sleeve is provided with a supporting block, and the movable sleeves are divided into three hollow long movable sleeves and a short movable sleeve located at the lower left corner. When the keyboard is flapped, a desktop does not extrude the keycaps to limit positions to cause collision, so that the contact positions of the keycaps and the key shafts are not damaged, the damage of the keyboard caused by collision is reduced in the flapping process, the anti-falling performance is improved, the side edge of the lower shell is made of metal, the damage caused by collision is avoided, and the service life of the keyboard is prolonged. And the anti-falling performance is further improved.

Description

Technical Field

[0001] This utility model relates to the field of keyboard technology, and in particular to a computer keyboard with good drop resistance. Background Technology

[0002] With the development of information technology and the popularization of the Internet, computers have become an indispensable device for office or home use. Along with this comes matching accessories, such as mice and keyboards. Whether at home, in the office, or in an internet cafe, the keyboard surface needs to be cleaned regularly. The simplest way to clean it is to flip the keyboard over and tap it on the table to knock off the particles in the gaps between the keycaps. Then, use a brush or tissue to clean it a second time.

[0003] Traditional keyboards do not have corresponding protective devices, so they are easily damaged when hit, and their drop resistance is poor. Utility Model Content

[0004] The purpose of this invention is to address the following shortcomings in the existing technology: the keyboard does not have a corresponding protective device, so it is easily damaged when hit and has poor drop resistance. Therefore, this invention proposes a computer keyboard with good drop resistance.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A computer keyboard with good drop resistance includes a lower housing and a PCB circuit board installed inside the lower housing. An upper housing is installed on the lower housing. Keycaps are installed on the PCB circuit board via key switches. A limit plate is also provided inside the lower housing. Movable sleeves are slidably connected to the four corners of the lower housing. A support block is provided at the bottom of each movable sleeve. The movable sleeves are divided into three hollow long movable sleeves and a short movable sleeve located at the lower left corner. Each long movable sleeve includes a movable outer sleeve and a movable inner sleeve slidably connected inside the movable outer sleeve. A rubber airbag is placed inside each movable outer sleeve. A spring is provided on the rubber airbag. The end of the spring away from the rubber airbag is connected to the bottom of the movable inner sleeve. A limit block is installed on the movable inner sleeve.

[0007] Preferably, sound-absorbing cotton is provided between the lower housing and the PCB circuit board.

[0008] Preferably, a glass wool layer is also installed between the limiting plate and the PCB circuit board.

[0009] Preferably, the limiting plate is an epoxy resin board, which is located above the glass wool layer.

[0010] Preferably, the thickness of the two upper support blocks is greater than the thickness of the two lower support blocks.

[0011] Preferably, the inner sleeve is hollow and contains ball bearings.

[0012] Preferably, the support block and the movable outer sleeve, and the limiting block and the movable inner sleeve are all threaded connections.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] When the keyboard is tapped, the desktop will not squeeze the keycaps to their limit and cause impact, thus ensuring that the contact points between the keycaps and the key switches are not damaged. The tapping process reduces the damage to the keyboard caused by impact, thereby increasing its drop resistance. The sides of the lower shell are made of metal to avoid damage from bumps and knocks, further increasing its drop resistance. Attached Figure Description

[0015] Figure 1 This is a partial structural diagram of the lower shell of a computer keyboard with good drop resistance proposed in this utility model;

[0016] Figure 2 This is a schematic diagram of a partial structure on the back of the lower shell;

[0017] Figure 3 This is a schematic diagram of the movable sleeve structure.

[0018] In the diagram: 1. Lower shell, 2. Spring, 3. Movable outer shell, 4. Epoxy resin board, 5. PCB circuit board, 6. Glass wool layer, 7. Support block, 8. Movable inner sleeve, 9. Ball bearing, 10. Limiting block, 11. Rubber airbag. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] The terms used in this utility model, such as "upper", "lower", "left", "right", "middle" and "one", are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0021] Reference Figures 1-3A computer keyboard with good drop resistance includes a lower housing 1 and a PCB circuit board 5 installed inside the lower housing 1. An upper housing is installed on the lower housing 1. Keycaps are mounted on the PCB circuit board 5 via key switches. A limiting plate is also provided inside the lower housing 1. The holes on the limiting plate facilitate the positioning of the key switches, thus facilitating installation. The upper housing, key switches, and keycaps are not shown in the figure; their installation method and position are existing technology and will not be described in detail. Each of the four corners of the lower housing 1 is slidably connected to a movable sleeve. Each movable sleeve has a support block 7 at its bottom. The movable sleeve consists of three hollow long movable sleeves and a short movable sleeve located at the lower left corner. The height of the long movable sleeves is higher than the keycaps, while the height of the short movable sleeves is lower than the keycaps. When the keyboard is in use, only the lower left corner will be covered by the palm, as its height is lower than the keycaps, thus not affecting the use of the left hand. Under normal use, the palm will not contact the other three long movable sleeves. The long movable sleeve includes a movable outer sleeve 3 and a movable inner sleeve 8 slidably connected inside the movable outer sleeve 3. Each movable outer sleeve 3 contains... A rubber airbag 11 is placed inside, and a spring 2 is installed on the rubber airbag 11. The end of the spring 2 away from the rubber airbag 11 is connected to the bottom end of the movable inner sleeve 8. A limit block 10 is installed on the movable inner sleeve 8. When the keyboard is flipped over and tapped on the table, the movable inner sleeve 8 will move into the movable outer sleeve 3 and compress the rubber airbag 11. Due to the limit of the inner wall of the movable outer sleeve 3, the expansion volume is limited. At the moment of tapping, the movable inner sleeve 8 will also be subjected to the squeezing force of the expanding rubber airbag 11, so that the movable inner sleeve 8 will not continue to move into the movable outer sleeve 3, shortening the movement stroke of the movable inner sleeve 8. In this way, the entire desktop will not squeeze the keycap to the limit position and cause impact during tapping, thus ensuring that the contact position between the keycap and the key switch will not be damaged. The spring 2 can play a buffering role and also reset the movable inner sleeve 8. The above tapping process reduces the damage to the keyboard caused by impact, thereby increasing the drop resistance. The side of the lower shell 1 is made of metal to avoid damage caused by bumps, further increasing the drop resistance.

[0022] A sound-absorbing cotton is provided between the lower housing 1 and the PCB circuit board 5. The sound-absorbing cotton is not shown in the figure. It can reduce the noise of keyboard typing.

[0023] A glass wool layer 6 is also installed between the limiting plate and the PCB circuit board 5. The glass wool layer 6 plays a role in shock absorption and is used to protect the electronic components that come into contact with the PCB circuit board 5.

[0024] The limiting plate is an epoxy resin board 4, which is located above the glass wool layer 6. The glass wool layer 6 is fixed to the lower housing 1 with screws (not shown), thereby fixing the epoxy resin board 4, PCB circuit board 5 and sound-absorbing cotton below, preventing them from shaking due to being hit and causing poor contact.

[0025] The two upper support blocks 7 are thicker than the two lower support blocks 7, making the entire keyboard surface tilted, which facilitates operation of the keyboard with both hands.

[0026] The inner sleeve 8 is hollow and contains a ball bearing 9. The ball bearing 9 moves within the inner sleeve 8. When flipped over, the ball bearing 9 moves towards the limit block 10. Through inertia, the inner sleeve 8 moves more smoothly downwards, preventing jamming that would cause the keycaps to be the first to come into contact with the desktop, thus preventing damage to the keycaps.

[0027] The support block 7 and the movable outer sleeve 3, the limit block 10 and the movable inner sleeve 8 are all connected by threads, which makes disassembly and installation more convenient.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "connection", "linking", "fixing", etc., should be interpreted broadly.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A computer keyboard with good drop resistance, comprising a lower housing (1) and a PCB circuit board (5) installed inside the lower housing (1), wherein an upper housing is mounted on the lower housing (1), and keycaps are provided on the PCB circuit board (5) via key switches, characterized in that... The lower housing (1) is also provided with a limiting plate. The four corners of the lower housing (1) are slidably connected with movable sleeves. Each movable sleeve is provided with a support block (7) at the bottom. The movable sleeve is divided into three hollow long movable sleeves and a short movable sleeve located at the lower left corner. The long movable sleeve includes a movable outer sleeve (3) and a movable inner sleeve (8) slidably connected inside the movable outer sleeve (3). Each movable outer sleeve (3) contains a rubber airbag (11). A spring (2) is provided on the rubber airbag (11). The end of the spring (2) away from the rubber airbag (11) is connected to the bottom of the movable inner sleeve (8). A limiting block (10) is installed on the movable inner sleeve (8).

2. The computer keyboard with good drop resistance according to claim 1, characterized in that, Sound-absorbing cotton is provided between the lower housing (1) and the PCB circuit board (5).

3. A computer keyboard with good drop resistance according to claim 2, characterized in that, A glass wool layer (6) is also installed between the limiting plate and the PCB circuit board (5).

4. A computer keyboard with good drop resistance according to claim 3, characterized in that, The limiting plate is an epoxy resin board (4), which is located above the glass wool layer (6).

5. A computer keyboard with good drop resistance according to claim 4, characterized in that, The thickness of the two upper support blocks (7) is greater than the thickness of the two lower support blocks (7).

6. A computer keyboard with good drop resistance according to claim 5, characterized in that, The inner sleeve (8) is hollow, and a ball bearing (9) is placed inside the inner sleeve (8).

7. A computer keyboard with good drop resistance according to claim 6, characterized in that, The support block (7) and the movable outer sleeve (3), the limiting block (10) and the movable inner sleeve (8) are all threaded connections.

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