Low-friction mute type plastic key

Abstract

The utility model relates to the technical field of keys, in particular to a low-friction mute type plastic key. The low-friction mute type plastic button comprises a base, a supporting cylinder, a spring, a lifting shaft, a connecting block, a button body, a protective cover and a low-friction assembly, the protective cover is connected to the top of the base, the button body is clamped on the protective cover in a sliding mode, the supporting cylinder is connected to the middle of the top of the base, the lifting shaft is connected to the supporting cylinder in a sliding mode, and the connecting block is connected with the lifting shaft. A spring is connected between the bottom of the lifting shaft and the interior of the supporting cylinder, a connecting block is connected to the bottom in the key body and connected with the lifting shaft in a clamped mode, and a low-friction assembly is arranged on the lifting shaft. According to the key, the idler wheels are installed on the periphery of the lifting shaft, when the lifting shaft moves downwards, direct contact between the lifting shaft and the supporting cylinder is reduced through the idler wheels, so that friction and noise are reduced, the operation smoothness of the key body is improved through the design of the idler wheels, and the service life of the lifting shaft and the service life of the supporting cylinder are prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of buttons, in particular to a low-friction and silent plastic button. Background Art

[0002] With the development of technology, various mobile terminals and portable electronic products have been widely used in daily production and life, such as devices like mobile phones and tablet computers. With the continuous improvement of the market's requirements for user experience, the design of products pays more and more attention to details. However, the existing buttons are usually composed of a metal sheet and a plastic body, and there are some obvious disadvantages, such as low surface hardness and poor wear resistance. During actual use, since the button shaft touches the lower cover of the device when pressed and the upper cover when bouncing back, this results in the easy generation of noise during the pressing and releasing processes of the button. For users with high requirements for the working environment, the noise generated by the button may interfere with their work.

[0003] Based on this, to solve the above-mentioned technical defects, a low-friction and silent plastic button is now proposed. Summary of the Utility Model

[0004] In order to overcome the disadvantages of the existing buttons with poor wear resistance and easy noise generation, the technical problem to be solved is: to provide a low-friction and silent plastic button.

[0005] The technical solution is: a low-friction and silent plastic button, including a base, a support cylinder, a spring, a lifting shaft, a connecting block, a button body, a protective cover and a low-friction component. The top of the base is connected with a protective cover, the button body is slidably clamped on the protective cover, the middle of the top of the base is connected with a support cylinder, the lifting shaft is slidably connected to the support cylinder, a spring is connected between the bottom of the lifting shaft and the inside of the support cylinder, the inner bottom of the button body is connected with a connecting block, a card slot is opened in the lifting shaft, the connecting block is clamped with the card slot, and a low-friction component is arranged on the lifting shaft.

[0006] Further, the low-friction component includes rollers. Rollers are rotatably connected to the left and right sides and the front and back sides of the lifting shaft, and limiting grooves are opened on the left and right side walls and the front and back side walls inside the support cylinder, and the rollers slide along the limiting grooves.

[0007] Further, a gap is left between the lifting shaft and the inner wall of the support cylinder without a contact surface.

[0008] Further, it further includes a wear-resistant layer, and a wear-resistant layer is arranged on the top of the button body.

[0009] Further, it further includes a buffer pad. The buffer pad is connected to the top of the base at a position outside the support cylinder, and the button body will contact the buffer pad when pressed down.

[0010] Further, it also includes a first buffer ring and a second buffer ring. An annular first buffer ring is connected to the middle of the top of the base at a position outside the spring, and an annular second buffer ring is connected to the inner top of the support cylinder at a position outside the lifting shaft. The second buffer ring buffers between the top surface of the lifting shaft and the support cylinder, while the first buffer ring buffers between the bottom surface of the lifting shaft and the base.

[0011] Compared with the prior art, the utility model has the following advantages: 1. By installing rollers around the lifting shaft, when the lifting shaft moves downward, the rollers reduce the direct contact between the lifting shaft and the support cylinder, thereby reducing friction and noise. The design of the rollers not only improves the smoothness of the operation of the key body but also extends the service life of the lifting shaft and the support cylinder;

[0012] 2. A buffer pad, a first buffer ring, and a second buffer ring are provided. When pressing the key body, through a multi-layer buffer design, the vibration and sound transmission caused by hard contact are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a three-dimensional structural schematic diagram of the utility model.

[0014] Figure 2 is a partial cross-sectional view of the utility model.

[0015] Figure 3 is a first partial three-dimensional structural schematic diagram of the utility model.

[0016] Figure 4 is a second partial three-dimensional structural schematic diagram of the utility model.

[0017] The marks of each component in the drawings are as follows: 1. Base, 101. Buffer pad, 2. Support cylinder, 201. Limit groove, 202. First buffer ring, 203. Second buffer ring, 3. Spring, 4. Lifting shaft, 401. Roller, 402. Card slot, 5. Connecting block, 6. Key body, 601. Wear-resistant layer, 7. Protective cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the utility model without creative efforts shall fall within the protection scope of the utility model.

[0019] Embodiment: A low-friction and silent plastic key, as Figures 1-4As shown in the figure, it includes a base 1, a support cylinder 2, a spring 3, a lifting shaft 4, a connecting block 5, a key body 6, a wear-resistant layer 601, a protective cover 7 and a low-friction component. A protective cover 7 is welded to the top of the base 1. The key body 6 is slidably clamped on the protective cover 7. A wear-resistant layer 601 is provided on the top of the key body 6, which can improve the wear resistance of the key body 6 and is beneficial for long-term use. A support cylinder 2 is welded in the middle of the top of the base 1. A lifting shaft 4 is slidably connected to the support cylinder 2. A spring 3 is connected between the bottom of the lifting shaft 4 and the inside of the support cylinder 2. There is a gap between the lifting shaft 4 and the inner wall of the support cylinder 2 without a contact surface. A connecting block 5 is connected to the inner bottom of the key body 6. A card slot 402 is formed in the lifting shaft 4. The connecting block 5 is clamped with the card slot 402. A low-friction component is provided on the lifting shaft 4.

[0020] As Figure 2 shown, the low-friction component includes rollers 401. Rollers 401 are rotatably connected to the left and right sides and the front and back sides of the lifting shaft 4. Limiting grooves 201 are formed in the left and right side walls and the front and back side walls inside the support cylinder 2. The rollers 401 slide along the limiting grooves 201.

[0021] As Figure 2 and Figure 4 shown, it also includes a buffer pad 101, a first buffer ring 202 and a second buffer ring 203. The buffer pad 101 is adhesively bonded to the position on the top of the base 1 outside the support cylinder 2. When the key body 6 is pressed down, it will contact the buffer pad 101 to play a role in buffering and silencing. A circular first buffer ring 202 is connected to the position on the top of the base 1 in the middle outside the spring 3. A circular second buffer ring 203 is connected to the position on the inner top of the support cylinder 2 outside the lifting shaft 4. The second buffer ring 203 buffers between the top surface of the lifting shaft 4 and the support cylinder 2, while the first buffer ring 202 buffers between the bottom surface of the lifting shaft 4 and the base 1.

[0022] When in use, with the hand against the wear-resistant layer 601, press down the key body 6. The key body 6 pushes the connecting block 5 and the lifting shaft 4 to move downward, driving the rollers 401 to slide downward along the limiting grooves 201, which can assist the movement of the lifting shaft 4 and at the same time prevent the lifting shaft 4 from contacting the inner wall of the support cylinder 2. The spring 3 is compressed accordingly. The buffer pad 101 buffers the key body 6. When the key body 6 is released, the spring 3 rebounds and resets, driving the lifting shaft 4, the connecting block 5 and the key body 6 to move upward and reset. The first buffer ring 202 and the second buffer ring 203 play a role in buffering the lifting shaft 4, which can prevent friction noise from being generated when the lifting shaft 4 moves. The protective cover 7 can prevent external dust from entering the inside of the component through the gap. When disassembling the key body 6, pull the key body 6 upward to disengage the connecting block 5 from the card slot 402, and then the key body 6 can be disassembled, which is convenient for maintenance.

[0023] The above embodiments are only for illustrating the technical concept and features of the present utility model, and the purpose is to enable those skilled in the art to understand the content of the present utility model and implement it accordingly, and it should not be used to limit the protection scope of the present utility model. Any equivalent changes or modifications made according to the spirit and essence of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A low-friction and silent plastic key, characterized in that, It includes a base (1), a support cylinder (2), a spring (3), a lifting shaft (4), a connecting block (5), a key body (6), a protective cover (7) and a low-friction component. The top of the base (1) is connected with the protective cover (7). The key body (6) is slidably clamped on the protective cover (7). The middle of the top of the base (1) is connected with the support cylinder (2). The lifting shaft (4) is slidably connected to the support cylinder (2). A spring (3) is connected between the bottom of the lifting shaft (4) and the inside of the support cylinder (2). The inner bottom of the key body (6) is connected with the connecting block (5). A clamping groove (402) is formed in the lifting shaft (4). The connecting block (5) is clamped with the clamping groove (402). A low-friction component is arranged on the lifting shaft (4).

2. The low-friction and silent plastic key according to claim 1, characterized in that, The low-friction component includes rollers (401). Rollers (401) are rotatably connected to the left and right sides and the front and back sides of the lifting shaft (4). Limiting grooves (201) are formed in the left and right side walls and the front and back side walls inside the support cylinder (2). The rollers (401) slide along the limiting grooves (201).

3. The low-friction and silent plastic key according to claim 2, wherein A gap is left between the lifting shaft (4) and the inner wall of the support cylinder (2) without a contact surface.

4. The low-friction and silent plastic key according to claim 3, wherein It further includes a wear-resistant layer (601). The wear-resistant layer (601) is arranged on the top of the key body (6).

5. A low-friction and silent plastic key according to claim 4, characterized in that, It further includes a buffer pad (101). The buffer pad (101) is connected to the top of the base (1) at a position outside the support cylinder (2). When the key body (6) is pressed downward, it will contact the buffer pad (101).

6. The low-friction and silent plastic key according to claim 5, characterized in that, It further includes a first buffer ring (202) and a second buffer ring (203). An annular first buffer ring (202) is connected to the middle of the top of the base (1) at a position outside the spring (3). An annular second buffer ring (203) is connected to the inner top of the support cylinder (2) at a position outside the lifting shaft (4). The second buffer ring (203) buffers between the top surface of the lifting shaft (4) and the support cylinder (2), while the first buffer ring (202) buffers between the bottom surface of the lifting shaft (4) and the base (1).

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