Key pulley structure and switch

Abstract

The utility model relates to a button pulley structure and a switch, the button pulley structure comprises a swing rod, a button used for driving the swing rod to swing, and a pulley located between the swing rod and the button and used for connecting the swing rod and the button, the pulley is rotatably connected with the button, and the pulley is in point contact or line contact with the swing rod. According to the key pulley structure and the switch provided by the utility model, the pulley is additionally arranged on the key, so that the key clamping problem is effectively solved, and efficient and stable linkage between the key and the swing rod is ensured.

Description

Technical Field

[0001] The utility model relates to the field of switches, and in particular to a key pulley structure and a switch. Background Art

[0002] In the field of electronic devices, ultra-thin switches are favored for their compact design. However, this design also brings some challenges, especially during installation and daily use. Due to space limitations and the particularity of the mechanical structure, the rocker part of the ultra-thin switch is prone to dust accumulation, which can hinder the movement between the button and the rocker, and then cause the key to stick. Utility Model Content

[0003] In view of this, the utility model provides a key pulley structure, which effectively solves the key sticking problem by adding a pulley on the key, and ensures that the linkage between the key and the rocker arm is efficient and stable.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] A key pulley structure includes a rocker arm, a key for driving the rocker arm to swing, and a pulley located between the rocker arm and the key and used to connect the rocker arm and the key. The pulley is rotationally connected to the key, and the pulley and the rocker arm are in point contact or line contact.

[0006] By adding a pulley to the key, the problem of key sticking is effectively solved, ensuring efficient and stable linkage between the key and the rocker. The pulley's axial rotation is connected to the key, ensuring that the pulley can rotate relative to the key. The surface of the pulley has been precisely designed to form point contact or line contact with the rocker. This contact method is based on the principle of rolling friction, which greatly reduces the friction caused by dust, allowing the key to slide smoothly on the rocker, effectively avoiding the phenomenon of key sticking. In addition, the design of the pulley structure also takes into account durability and ease of maintenance. Since the pulley is a component independent of the key, it can be easily cleaned or replaced when it needs to be cleaned or replaced without disassembling the entire switch device, greatly simplifying the maintenance process.

[0007] Preferably, a slot is provided on the back of the button, a rotating shaft is provided in the axial direction of the pulley, and the rotating shaft is rotatably engaged in the slot.

[0008] The slot on the back of the key serves as the pulley's axial anchor point, ensuring stability and precision during keystrokes. The pivoting axis allows the pulley to rotate freely without being deflected by external forces. This structural design not only improves the dynamic response of the entire mechanism but also ensures durability over extended use.

[0009] Preferably, there are one or more pulleys, and the pulleys are evenly distributed on the back of the key.

[0010] The number of pulleys can be flexibly configured based on actual application requirements. Whether a single pulley or a multi-pulley system, efficient energy transfer and torque conversion are achieved. When multiple pulleys are used, they are evenly distributed across the back of the key, enhancing the overall structural symmetry and balance while also distributing force more evenly, further improving operational stability and reliability.

[0011] Preferably, the number of the pulleys is 4, and the 4 pulleys are distributed in a square.

[0012] During further optimization, the number of pulleys was reduced to four, evenly distributed in a square pattern on the back of the key. This design not only ensures that the pulleys evenly distribute pressure when applied, but also improves the symmetry and aesthetics of the entire mechanism. The square arrangement of the pulleys helps achieve a more balanced torque distribution, thereby improving operational stability and accuracy.

[0013] Preferably, reinforcing ribs are provided on the back of the button.

[0014] To enhance the structural strength of the pulley system, reinforcing ribs are specially designed on the back of the keys. These ribs not only increase the overall rigidity of the keys, but also help resist deformation caused by long-term use or external impact, extending the product's lifespan.

[0015] Preferably, the pulley partially protrudes from the reinforcement rib or is flush with the reinforcement rib.

[0016] The pulley's localized design, combined with the reinforcement ribs, allows the pulley to better perform its function without affecting its overall appearance. Parts of the pulley protrude from the reinforcement ribs or lie flush with them, ensuring freedom of movement while avoiding interference or jamming that could result from excessive protrusions. This ingenious design ensures the pulley system provides essential functionality while maintaining the key's clean appearance.

[0017] Preferably, there is a gap between the rocker arm and the reinforcement rib, or the rocker arm and the reinforcement rib fit together.

[0018] The presence of a gap or a close fit between the rocker and the ribs offers multiple advantages. First, a gap between the rocker and the ribs effectively reduces friction, making the rocker move more smoothly. It also provides space for dust and impurities to escape, preventing the key from getting stuck. This gap ensures the rocker's flexibility while improving the durability of the entire mechanism. Furthermore, when the rocker and ribs fit closely together, they provide better support and stability. This close contact ensures that the rocker will not shift or vibrate when subjected to force, thereby improving operational accuracy and reliability. Furthermore, the close fit design provides a certain degree of resistance to external impact, protecting the rocker from damage.

[0019] A switch comprises the key pulley structure.

[0020] Switches manufactured with this key-pulley structure cleverly solve the problem of key sticking. The pulley's axis is rotatably connected to the key, ensuring its relative rotation. The pulley's surface is precisely designed to form point or line contact with the rocker. This contact, based on the principle of rolling friction, significantly reduces friction caused by dust, allowing the key to slide smoothly on the rocker, effectively preventing key sticking. Furthermore, the pulley structure is designed for durability and ease of maintenance. Since the pulley is a separate component from the key, cleaning or replacement can be easily performed without disassembling the entire switch, greatly simplifying maintenance.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The key pulley structure of the present invention effectively solves the problem of key sticking by adding a pulley to the key, ensuring efficient and stable linkage between the key and the rocker arm. The pulley's axial rotation is connected to the key, ensuring that the pulley can rotate relative to the key. The surface of the pulley is precisely designed to form point contact or line contact with the rocker arm. This contact method is based on the principle of rolling friction, which greatly reduces the friction caused by dust, allowing the key to slide smoothly on the rocker arm, effectively avoiding the key sticking phenomenon. In addition, the design of the pulley structure also takes into account durability and ease of maintenance. Since the pulley is a component independent of the key, it can be easily operated when it needs to be cleaned or replaced without disassembling the entire switch device, which greatly simplifies the maintenance process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 This is a partial exploded view of the key pulley structure of an embodiment of the present invention.

[0025] Figure 2 This is a structural diagram of a key pulley structure according to an embodiment of the present invention. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0028] It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in the subsequent figures. In the description of the embodiments of the present application, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", etc. is based on the orientation or position relationship shown in the drawings, or is the orientation or position relationship in which the product of the application is usually placed when in use, or is the orientation or position relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0029] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0030] The technical solution in this application will be described below with reference to the accompanying drawings.

[0031] This embodiment provides a key pulley structure, including a rocker arm 10, a key 20 for driving the rocker arm 10 to swing, and a pulley 30 located between the rocker arm 10 and the key 20 and used to connect the rocker arm 10 and the key 20. The pulley 30 is rotationally connected to the key 20, and the pulley 30 and the rocker arm 10 are in point contact or line contact.

[0032] By adding a pulley 30 to the button 20, this pulley 30 not only cleverly solves the problem of key jamming, but also demonstrates excellent practicality in actual applications. The pulley 30 is axially rotatably connected to the button 20, ensuring that the pulley 30 can rotate relative to the button 20. The surface of the pulley 30 has been precisely designed to form point contact or line contact with the rocker 10. This contact method is based on the principle of rolling friction, which greatly reduces the friction caused by dust, allowing the button 20 to slide smoothly on the rocker 10, effectively avoiding the key jamming phenomenon. In addition, the design of the pulley 30 structure also takes into account durability and ease of maintenance. Since the pulley 30 is a component independent of the button 20, it can be easily operated when it needs to be cleaned or replaced without disassembling the entire switch device, greatly simplifying the maintenance process.

[0033] In this embodiment, a slot 21 is provided on the back of the button 20 , and a rotating shaft 31 is provided in the axial direction of the pulley 30 . The rotating shaft 31 is rotatably engaged in the slot 21 .

[0034] The slot 21 on the back of the key 20 serves as the axial anchor point for the pulley 30, ensuring stability and precision during the movement of the key 20. The placement of the shaft 31 allows the pulley 30 to rotate freely without deviating from its intended trajectory due to external forces. This structural design not only improves the dynamic response speed of the entire mechanism but also ensures durability over extended use.

[0035] The number of pulleys 30 can be one or more, with multiple pulleys 30 evenly distributed on the back of the key 20. The number of pulleys 30 can be flexibly configured based on actual application requirements. Whether a single pulley 30 or a multi-pulley system 30 is used, efficient energy transfer and torque conversion can be achieved. When multiple pulleys 30 are used, their even distribution on the back of the key 20 not only enhances the symmetry and balance of the overall structure, but also more evenly distributes force, further improving operational smoothness and reliability.

[0036] In this embodiment, the number of pulleys 30 is four, and the four pulleys 30 are distributed in a square shape.

[0037] In further optimization, the number of pulleys 30 was set to four, evenly distributed in a square pattern on the back of the key 20. This design not only ensures that the pulleys 30 evenly distribute the pressure when applied, but also improves the symmetry and aesthetics of the entire mechanism. The square distribution of pulleys 30 helps achieve a more balanced torque distribution, thereby improving operational stability and accuracy.

[0038] In this embodiment, a reinforcing rib 22 is provided on the back of the button 20 .

[0039] To enhance the structural strength of the pulley 30 system, a reinforcing rib 22 is provided on the back of the key 20. The presence of the reinforcing rib 22 not only increases the overall rigidity of the key 20, but also helps to resist deformation caused by long-term use or external impact, thereby extending the service life of the product.

[0040] In this embodiment, the pulley 30 partially protrudes from the reinforcing rib 22 or is flush with the reinforcing rib 22 .

[0041] The local design of pulley 30, combined with the reinforcement rib 22, allows pulley 30 to better perform its function without affecting the overall appearance. Partially protruding from or flush with the reinforcement rib 22, pulley 30 ensures freedom of movement while avoiding interference or jamming that could result from excessive protrusions. This ingenious design ensures that the pulley 30 system provides necessary functionality while maintaining the simple appearance of the button 20.

[0042] In this embodiment, there is a gap between the rocker arm 10 and the reinforcement rib 22 , or the rocker arm 10 and the reinforcement rib 22 fit together.

[0043] There is a gap or mutual fit between the pendulum rod 10 and the reinforcement rib 22. This design has multiple advantages. First, when there is a gap between the pendulum rod 10 and the reinforcement rib 22, friction can be effectively reduced, making the pendulum rod 10 smoother during movement. At the same time, it also provides a certain amount of space for dust and impurities to be removed, preventing the occurrence of key jamming. The existence of this gap not only ensures the flexibility of the pendulum rod 10, but also improves the durability of the entire mechanism. On the other hand, when the pendulum rod 10 and the reinforcement rib 22 are in fit with each other, better support and stability can be provided. This close contact ensures that the pendulum rod 10 will not be displaced or vibrated when subjected to force, thereby improving the accuracy and reliability of operation. At the same time, the fitting design can also resist external impact to a certain extent and protect the pendulum rod 10 from damage.

[0044] A switch comprises the above key pulley structure and a switch body.

[0045] Switches manufactured using this key-pulley structure cleverly solve the problem of key sticking. The pulley 30 is axially rotatably connected to the key 20, ensuring its relative rotation. The surface of the pulley 30 is precisely designed to form point or line contact with the rocker 10. This contact, based on the principle of rolling friction, significantly reduces friction caused by dust, allowing the key 20 to slide smoothly on the rocker 10, effectively preventing the key from sticking. Furthermore, the pulley 30 structure is designed for durability and ease of maintenance. Since the pulley 30 is a separate component from the key 20, cleaning or replacement can be easily performed without disassembling the entire switch assembly, greatly simplifying maintenance.

[0046] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A key pulley structure, characterized in that: The utility model comprises a swing rod, a key for driving the swing rod to swing, and a pulley located between the swing rod and the key and used for connecting the swing rod and the key. The pulley is rotatably connected with the key, and the pulley and the swing rod are in point contact or line contact.

2. The key pulley structure according to claim 1, characterized in that: A slot is arranged on the back of the button, a rotating shaft is arranged in the axial direction of the pulley, and the rotating shaft is rotatably arranged in the slot.

3. The key pulley structure according to claim 1, characterized in that: The number of the pulley is one or more.

4. The key pulley structure according to claim 3, characterized in that: The plurality of pulleys are evenly distributed on the back side of the key.

5. The key pulley structure according to claim 4, characterized in that: The number of the pulleys is 4, and the 4 pulleys are distributed in a square shape.

6. The key pulley structure according to claim 1, characterized in that: The back of the button is provided with reinforcing ribs.

7. The key pulley structure according to claim 6, characterized in that: The pulley partially protrudes from the reinforcing rib or is flush with the reinforcing rib.

8. The key pulley structure according to claim 7, characterized in that: There is a gap between the swing rod and the reinforcing rib, or the swing rod and the reinforcing rib fit each other.

9. A switch, characterized in that: It comprises a key pulley structure as described in any one of claims 1 to 8.

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