A bushing for power tools

Abstract

This utility model relates to the field of power tool bushing technology, and discloses a power tool bushing, including a bushing body, an extension sleeve fixedly connected to the top of the bushing body, an external thread on the surface of the extension sleeve, a connecting sleeve threadedly connected to the external thread surface, a hinge fixedly connected to the top of the connecting sleeve, and the connecting sleeve hinged to the bottom of a dust cover via the hinge. A sealing ring is installed on the inner wall of the bushing body. This utility model allows the connecting sleeve to be threadedly connected to the top of the bushing body when the power tool is not in use. Since the hinge is fixedly connected to the top of the connecting sleeve, and the dust cover is hinged to the bottom of the connecting sleeve via the hinge, the dust cover can tightly cover the top of the bushing body, providing dust protection. At this time, the sealing ring, leak-proof layer, and other structures inside the bushing body are in an idle and protected state, preventing dust and other impurities from entering and damaging the sealing structure.

Description

Technical Field

[0001] This utility model relates to the field of power tool bushing technology, and in particular to a power tool bushing. Background Technology

[0002] Power tools are widely used in modern industry and daily life, such as in construction, decoration, machining, automotive repair, and home renovation. With continuous technological advancements, the performance and functionality of power tools are constantly improving to meet various complex work requirements. Among the many components of a power tool, the bushing, as a component connecting and supporting key parts, has a significant impact on the overall performance of the power tool. The main function of the bushing is to support and fix the rotating parts of the power tool, such as the motor shaft and drive shaft, while also providing lubrication and sealing functions to ensure that the power tool operates efficiently and stably. The design and manufacturing quality of the bushing directly affects the service life, work efficiency, and operational safety of the power tool.

[0003] Existing power tool bushings typically lack effective dust protection when not in use. Dust and debris can easily enter the bushing through its openings, adhering to the inner wall of the bushing and rotating parts. This can cause the lubricating grease inside the bushing to deteriorate, increasing the frictional resistance between the shaft and the bushing. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a bushing for power tools.

[0005] This utility model is achieved by the following technical solution: a bushing for power tools, including a bushing body, an extension sleeve fixedly connected to the top end of the bushing body, an external thread on the surface of the extension sleeve, a connecting sleeve threadedly connected to the surface of the external thread, a hinge fixedly connected to the top end of the connecting sleeve, the connecting sleeve being hinged to the bottom end of a dust cover via the hinge, and a sealing ring installed on the inner wall of the bushing body.

[0006] Through the above technical solution, the external thread and the internal thread of the connecting sleeve cooperate to provide a stable connection between the connecting sleeve and the bushing body. The threaded connection has excellent self-locking performance, maintaining a tight connection under normal operating conditions, ensuring a firm and reliable connection between the connecting sleeve and the bushing body, preventing loosening due to vibration or external forces, thus guaranteeing the structural stability of the entire bushing. The threaded connection is simple and convenient to install and remove; users can quickly disassemble and install the connecting sleeve and the bushing body simply by rotating the connecting sleeve. This ease of installation and removal allows users to operate the bushing more flexibly when using power tools, improving work efficiency and facilitating maintenance and upkeep of the bushing. The dust cover, hinged to the connecting sleeve, tightly covers the top of the bushing body, providing dust protection. When the power tool is not in use, the dust cover effectively prevents dust and debris from entering the bushing body, avoiding dust accumulation on the inner wall of the bushing and the parts that mate with it. This reduces wear and jamming caused by dust, extends the service life of the bushing and related components, and improves the reliability of the power tool. The dust cover has a relatively simple structure, is easy to manufacture and install, and has a low cost. Furthermore, its hinged connection with the connecting sleeve makes disassembly and assembly of the dust cover simple and convenient, facilitating user maintenance and upkeep of the bushing.

[0007] As a further improvement to the above solution, an anti-slip sleeve is fixedly connected to the surface of the bushing body, and two anti-slip sleeves are provided.

[0008] Through the above technical solution, the anti-slip sleeve is fixedly connected to the surface of the bushing body, providing users with good grip friction. When users operate power tools, the anti-slip sleeve effectively prevents their hands from slipping on the bushing body, helping them to hold the power tools more stably, improving operational accuracy and safety. This is especially true when performing delicate operations or using power tools in complex environments, where the anti-slip sleeve's effect is even more pronounced, reducing the probability of dangerous situations such as tool loss of control due to slipping. It is typically made of materials with a certain degree of elasticity and softness, providing a comfortable grip, reducing hand fatigue during prolonged use of power tools, and improving the user experience.

[0009] As a further improvement to the above solution, an internal smooth layer is fixedly connected to the inner wall of the bushing body.

[0010] Through the above technical solution, the internal smooth layer is fixedly connected to the inner wall of the bushing body, which can effectively reduce the frictional resistance when the shaft rotates inside the bushing, allowing the rotating parts of the power tool to operate more smoothly and improving the performance and work efficiency of the power tool. The smooth inner wall surface helps to reduce wear between the shaft and the bushing, extending the service life of the shaft and the bushing.

[0011] As a further improvement to the above solution, a leak-proof layer is fixedly connected to the inner wall of the inner smooth layer.

[0012] Through the above technical solution, the leak-proof layer is fixedly connected to the inner wall of the smooth inner layer, further enhancing the sealing performance of the bushing. During the operation of the power tool, the leak-proof layer can effectively prevent lubricating oil and other liquids from leaking from the gap between the bushing body and the shaft, while also preventing external liquids and impurities from entering the bushing, ensuring the stability of the internal environment of the bushing, ensuring the normal operation of the power tool, and reducing the risk of failure due to poor sealing.

[0013] As a further improvement to the above solution, a sealing ring is fixedly connected to the inner wall of the leak-proof layer, and a leak-proof groove is provided on the inner wall of the bushing body, and a plurality of leak-proof grooves are provided.

[0014] Through the above technical solution, the sealing ring can effectively prevent the leakage of lubricating oil and other liquids from the gap between the bushing body and the shaft during use. At the same time, it can also prevent external liquids and impurities from entering the bushing, protecting the internal parts and fitting precision of the bushing, reducing the risk of failure due to poor sealing, and improving the reliability of power tools. The inner wall of the bushing body is provided with several anti-leakage grooves. When a small amount of liquid enters the bushing body, the anti-leakage grooves can temporarily store the liquid and guide it to a suitable position, preventing the liquid from flowing randomly on the inner wall of the bushing and causing adverse effects on the bushing and shaft, further enhancing the sealing and protection performance of the bushing.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model uses a connecting sleeve threaded onto the top of the bushing body, and utilizes a hinged connection structure between the dust cover and the connecting sleeve to tightly cover the top of the bushing body when it is not in use. This structural design effectively prevents dust and debris from entering the interior of the bushing body, avoiding dust accumulation on the inner wall of the bushing and the parts that mate with it. This reduces wear and jamming caused by dust, extends the service life of the bushing and related components, and improves the reliability of power tools. The bushing body has a sealing ring installed on its inner wall, and an anti-leakage layer is fixedly connected to the inner wall of the inner smooth layer. The inner wall of the anti-leakage layer is also fixedly connected to a sealing ring. This multi-layer sealing structure greatly enhances the bushing's sealing performance. During the operation of the power tool, it effectively prevents lubricating oil and other liquids from leaking from the gap between the bushing body and the shaft. It also prevents external liquids and impurities from entering the bushing, ensuring a stable internal environment, guaranteeing the normal operation of the power tool, reducing the risk of malfunctions due to poor sealing, and improving work efficiency. This invention features two anti-slip sleeves fixedly connected to the surface of the bushing body. When the user operates the power tool, the anti-slip sleeves provide good friction, preventing the hand from slipping on the bushing body. This helps the user hold the power tool more stably, improving the accuracy and safety of operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the left end structure of this utility model; Figure 3 This is a schematic diagram of the bottom structure of this utility model; Figure 4 This is a cross-sectional structural diagram of the present invention.

[0017] Explanation of key symbols: 1. Bushing body; 2. Anti-slip sleeve; 3. Extension sleeve; 4. External thread; 5. Connecting sleeve; 6. Hinge; 7. Dust cover; 8. Inner smooth layer; 9. Leak-proof layer; 10. Sealing ring; 11. Leak-proof groove. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0019] Example: Please combine Figure 1-4 This embodiment of a power tool bushing includes a bushing body 1, an extension sleeve 3 fixedly connected to the top of the bushing body 1, an external thread 4 on the surface of the extension sleeve 3, a connecting sleeve 5 threadedly connected to the surface of the external thread 4, a hinge 6 fixedly connected to the top of the connecting sleeve 5, and the connecting sleeve 5 hinged to the bottom of the dust cover 7 via the hinge. A sealing ring 10 is installed on the inner wall of the bushing body 1. The connecting sleeve 5 and the bushing body 1 are connected by threads. This connection method is simple and reliable, allowing users to quickly disassemble the connecting sleeve 5 when the power tool is needed, enabling the bushing body 1 to smoothly cooperate with other parts of the power tool; and when not in use, the connecting sleeve 5 can be easily reinstalled, achieving protection for the bushing body 1. This convenient operation method improves the efficiency of users using power tools and reduces the time wasted on disassembling and assembling parts; the hinge 6 has a compact structure, occupies little space, and will not adversely affect the overall structure and appearance of the power tool. At the same time, the connection method of the hinge 6 also makes the connection between the dust cover 7 and the connecting sleeve 5 tighter, further enhancing the structural stability of the entire bushing.

[0020] Two anti-slip sleeves 2 are fixedly connected to the surface of the bushing body 1.

[0021] The inner wall of the bushing body 1 is fixedly connected with an internal smooth layer 8. The smooth inner wall surface helps to reduce wear between the shaft and the bushing and extend the service life of the shaft and the bushing.

[0022] An anti-leakage layer 9 is fixedly connected to the inner wall of the inner smooth layer 8. The anti-leakage layer 9 ensures the stability of the internal environment of the bushing, ensures the normal operation of the power tool, and reduces the risk of failure due to poor sealing. The anti-leakage layer 9 makes the internal structure of the bushing more stable, improving the overall strength and reliability of the bushing. At the same time, the anti-leakage layer 9 also provides better support and protection for the sealing ring 10, further extending the service life of the sealing ring 10.

[0023] A sealing ring 10 is fixedly connected to the inner wall of the leak-proof layer 9. During use, the sealing ring 10 can effectively prevent the leakage of liquids such as lubricating oil from the gap between the bushing body 1 and the shaft, and at the same time prevent external liquids and impurities from entering the bushing.

[0024] The inner wall of the bushing body 1 is provided with a leak-proof groove 11. There are several leak-proof grooves 11. When a small amount of liquid enters the inside of the bushing body 1, the leak-proof groove 11 can temporarily store the liquid and guide it to a suitable position, preventing the liquid from flowing randomly on the inner wall of the bushing and causing adverse effects on the bushing and shaft, thus further enhancing the sealing and protection performance of the bushing.

[0025] The implementation principle of a power tool bushing in this embodiment is as follows: When the power tool is not in use, the connecting sleeve 5 is first threadedly connected to the top of the bushing body 1. Since a hinge 6 is fixedly connected to the top of the connecting sleeve 5, the dust cover 7 is hinged to the bottom of the connecting sleeve 5 through the hinge 6. In this way, the dust cover 7 can tightly cover the top of the bushing body 1, thus playing a role in dust prevention. At this time, the sealing ring 10, leak-proof layer 9, and other structures inside the bushing body 1 are in an idle and protected state, preventing dust and other impurities from entering the interior and damaging the sealing structure.

[0026] When the power tool is needed, the user simply removes the connecting sleeve 5 from the top of the bushing body 1. At this point, the internal structure of the bushing body 1 begins to function. The sealing ring 10 on the inner wall of the bushing body 1 first acts as a seal, preventing leakage of liquids such as lubricating oil. The internal smoothing layer 8 and the leak-proof layer 9 further enhance the sealing effect, and the internal smoothing layer 8 also reduces the frictional resistance when the shaft rotates within the bushing. If a small amount of liquid enters the bushing body 1 during use, the leak-proof groove 11 acts as a buffer and guide, preventing the liquid from seriously affecting the normal operation of the bushing and the shaft. Simultaneously, the anti-slip sleeve 2 on the surface of the bushing body 1 provides the user with good grip friction, ensuring stable operation of the power tool.

[0027] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A bushing for power tools, characterized in that, Includes a bushing body (1), an extension sleeve (3) is fixedly connected to the top of the bushing body (1), an external thread (4) is provided on the surface of the extension sleeve (3), a connecting sleeve (5) is threadedly connected to the surface of the external thread (4), a hinge (6) is fixedly connected to the top of the connecting sleeve (5), the connecting sleeve (5) is hinged to the bottom of the dust cover (7) through the hinge, and a sealing ring (10) is installed on the inner wall of the bushing body (1).

2. The bushing for a power tool as described in claim 1, characterized in that: The bushing body (1) is fixedly connected to an anti-slip sleeve (2), and there are two anti-slip sleeves (2).

3. The bushing for power tools as described in claim 1, characterized in that: The inner wall of the bushing body (1) is fixedly connected with an internal smooth layer (8).

4. A bushing for power tools as described in claim 3, characterized in that: The inner wall of the smooth inner layer (8) is fixedly connected to a leak-proof layer (9).

5. A bushing for power tools as described in claim 4, characterized in that: A sealing ring (10) is fixedly connected to the inner wall of the leak-proof layer (9).

6. A bushing for power tools as described in claim 1, characterized in that: The inner wall of the bushing body (1) is provided with a leak-proof groove (11), and there are several leak-proof grooves (11).

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