Strong magnetic ring integrated bit head

CN224809343UActive Publication Date: 2026-09-29ZHEJIANG CHENGZHOU ALLOY TOOLS CO LTD
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Patent Information

Application Number
CN202522526152.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-11-28
Publication Date
2026-09-29
Estimated Expiration
2035-11-28

AI Technical Summary

Technical Problem

[0004]针对现有技术的不足,本实用新型提供了一种强磁环一体式批头,解决了传统的强磁环的批头在使用时强磁环与螺丝发生滑动摩擦的问题,在长时间使用后避免降低强磁环的磁性,防止强磁环吸附螺丝的稳定性降低,同时降低对强磁环造成磨损,从而延长了强磁环批头的使用寿命

Benefits of technology

通过铝合金套管内部设置的强磁环和强磁环一侧表面内嵌滚动安装的滚珠相互配合,从而解决了传统的强磁环的批头在使用时强磁环与螺丝发生滑动摩擦的问题,在长时间使用后避免降低强磁环的磁性,防止强磁环吸附螺丝的稳定性降低,同时降低对强磁环造成磨损,从而延长了强磁环批头的使用寿命。

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Abstract

The utility model discloses a kind of strong magnetic ring integrated batch head, including batch rod, the both ends of batch rod are fixedly connected with batch head, the side surface of batch head is fixedly connected with locating ring, the side of locating ring is provided with aluminium alloy sleeve, aluminium alloy sleeve is sleeved in the outside of batch head, the inside of aluminium alloy sleeve is provided with strong magnetic ring, strong magnetic ring is slidably installed in the inside of aluminium alloy sleeve, the inside of the side surface of strong magnetic ring is fixedly installed with ball, the other side surface of strong magnetic ring is provided with pusher assembly, the inside of one end of aluminium alloy sleeve is provided with limiting piece. Solve the problem that the batch head of traditional strong magnetic ring occurs sliding friction between strong magnetic ring and screw when using, avoid reducing the magnetism of strong magnetic ring after long time use, prevent the stability reduction of strong magnetic ring adsorption screw, reduce the abrasion to strong magnetic ring simultaneously, thereby prolong the service life of strong magnetic ring batch head.
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Description

Technical Field

[0001] This utility model relates to the field of bit technology, specifically a strong magnetic ring integrated bit. Background Technology

[0002] Screwdriver bits are tools used to tighten screws, and are usually mounted on a power drill. Most screwdriver bits used today are magnetic, so the bit inserts into the groove of the screw head and attracts the screw, thus holding it securely. This eliminates the need to hold the screw with your hand while tightening, preventing cuts from the skin and improving work efficiency.

[0003] According to patent application number 202020903660.1, a screwdriver bit with a strong magnetic ring is disclosed, including a screwdriver bar. The two ends of the screwdriver bar are integrally connected to the screwdriver bar from the outside to the inside, including a connecting part, a locking groove and a head. A detachable lead sleeve is fitted on one end of the screwdriver bar. The lead sleeve has a hollow structure that is wider at the top and narrower at the bottom. A strong magnetic ring is fixedly installed inside the upper part of the lead sleeve. A spring is installed inside the lead sleeve below the strong magnetic ring. The spring has a frustum-shaped structure that is wider at the top and narrower at the bottom. The lower part of the spring is located in the locking groove. Although this invention has a simple structure, adapts to varying insertion depths of the screwdriver bit, and ensures a tight contact between the bit and the screw, preventing slippage and thus minimizing bit damage, it still has some shortcomings in use. During operation, the strong magnetic ring typically contacts one end of the screw. When tightening the screw, sliding friction occurs between the screw and the strong magnetic ring. Over time, this reduces the magnetism of the strong magnetic ring, further decreasing its stability in attracting the screw. Additionally, prolonged friction causes wear on the strong magnetic ring, thus reducing the lifespan of the screwdriver bit. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides an integrated strong magnetic ring bit, which solves the problem of sliding friction between the strong magnetic ring and the screw during use in traditional strong magnetic ring bits. It also prevents the magnetic properties of the strong magnetic ring from decreasing after prolonged use, thus preventing a decline in the stability of the strong magnetic ring's screw attraction and reducing wear on the strong magnetic ring, thereby extending the service life of the strong magnetic ring bit.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a strong magnetic ring integrated screwdriver bit, comprising a screwdriver bar, with screwdriver bits fixedly connected to both ends of the screwdriver bar, a positioning ring fixedly connected to the side surface of the screwdriver bits, an aluminum alloy sleeve provided on one side of the positioning ring, the aluminum alloy sleeve being fitted over the outside of the screwdriver bits, a strong magnetic ring being provided inside the aluminum alloy sleeve, the strong magnetic ring being slidably installed inside the aluminum alloy sleeve, a ball bearing being fixedly installed inside one side surface of the strong magnetic ring, a pushing component being provided on the other side surface of the strong magnetic ring, and a limiting component being provided inside one end of the aluminum alloy sleeve.

[0006] Preferably, the pushing component includes a spring, one end of which is fixedly connected to the other side surface of the strong magnetic ring, and the other end of which is fixedly connected to the inner wall of the aluminum alloy sleeve.

[0007] Preferably, the limiting component includes a limiting ring, which is fixedly connected to the inner wall of the aluminum alloy sleeve. The inner diameter of the limiting ring is smaller than the outer diameter of the strong magnetic ring, and the thickness of the limiting ring is smaller than the radius of the ball.

[0008] Preferably, an anode ceramic plate is fixedly connected to one end of the aluminum alloy sleeve, and a cathode magnetic plate is fixedly connected to one side surface of the positioning ring, with the cathode magnetic plate aligned with the anode ceramic plate.

[0009] Preferably, one end of the aluminum alloy sleeve has an insertion hole, and a mounting rod is fixedly connected to one side surface of the positioning ring, with the mounting rod aligned with the insertion hole.

[0010] Preferably, a rubber sleeve is fitted on the lower end side surface of the mounting rod, and the side surface of the rubber sleeve is provided with anti-slip texture. The side surface of the rubber sleeve is interference-fitted with the inner surface of the insertion hole.

[0011] This invention provides a screwdriver bit with an integrated strong magnetic ring. Compared with the prior art, it has the following advantages: By using a strong magnetic ring inside the aluminum alloy sleeve and rolling balls embedded in one side of the strong magnetic ring, the problem of sliding friction between the strong magnetic ring and the screw is solved in traditional strong magnetic ring bit tools. This prevents the magnetic ring from losing its magnetism after long-term use, avoids reducing the stability of the strong magnetic ring in attracting screws, and reduces wear on the strong magnetic ring, thereby extending the service life of the strong magnetic ring bit.

[0012] A limiting ring fixedly connected to the inner wall of the other end of the aluminum alloy sleeve can limit the strong magnetic ring, preventing it from being pulled out of the aluminum alloy sleeve when the screw and bit separate. This reduces inconvenience for workers and improves the efficiency of screw tightening. Attached Figure Description Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This utility model Figure 1 Schematic diagram of the central positioning ring and aluminum alloy sleeve; Figure 3 This utility model Figure 2 A schematic diagram of the structure viewed from below.

[0013] In the diagram: 1. Screwdriver handle; 101. Screwdriver bit; 2. Positioning ring; 201. Rubber sleeve; 202. Mounting rod; 203. Cathode magnetic plate; 3. Aluminum alloy sleeve; 301. Insertion hole; 302. Anode ceramic plate; 303. Limiting ring; 304. Strong magnetic ring; 305. Spring; 306. Ball bearing. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-3 This utility model provides a technical solution: a strong magnetic ring integrated screwdriver bit, including a screwdriver bar 1, with screwdriver bits 101 fixedly connected to both ends of the screwdriver bar 1, a positioning ring 2 fixedly connected to the side surface of the screwdriver bits 101, an aluminum alloy sleeve 3 provided on one side of the positioning ring 2, the aluminum alloy sleeve 3 being sleeved on the outside of the screwdriver bits 101, a strong magnetic ring 304 provided inside the aluminum alloy sleeve 3, the strong magnetic ring 304 being slidably installed inside the aluminum alloy sleeve 3, a ball bearing 306 fixedly installed inside one side surface of the strong magnetic ring 304, a pushing component provided on the other side surface of the strong magnetic ring 304, and a limiting component provided inside one end of the aluminum alloy sleeve 3.

[0016] As a technical optimization of this utility model, the pushing component includes a spring 305. One end of the spring 305 is fixedly connected to the other side surface of the strong magnetic ring 304, and the other end of the spring 305 is fixedly connected to the inner wall of the aluminum alloy sleeve 3. The spring 305 can push the strong magnetic ring 304 to always be in contact with one end of the screw, and improve the stability of the strong magnetic ring 304 adsorbing the screw.

[0017] As a technical optimization of this utility model, the limiting component includes a limiting ring 303, which is fixedly connected to the inner wall of the aluminum alloy sleeve 3. The inner diameter of the limiting ring 303 is smaller than the outer diameter of the strong magnetic ring 304, and the thickness of the limiting ring 303 is smaller than the radius of the ball 306. The limiting ring 303 can limit the strong magnetic ring 304, so that when the screw is separated from the strong magnetic ring 304, the strong magnetic ring 304 is not pulled out of the interior of the aluminum alloy sleeve 3.

[0018] As a technical optimization of this utility model, an anode ceramic plate 302 is fixedly connected to one end of the aluminum alloy sleeve 3, and a cathode magnetic plate 203 is fixedly connected to one side surface of the positioning ring 2. The cathode magnetic plate 203 is aligned with the anode ceramic plate 302. The aluminum alloy sleeve 3 can be stably installed on the screwdriver bit 101 through the anode ceramic plate 302 and the cathode magnetic plate 203.

[0019] As a technical optimization of this utility model, an insertion hole 301 is provided at one end of the aluminum alloy sleeve 3, and an installation rod 202 is fixedly connected to one side surface of the positioning ring 2. The installation rod 202 is aligned with the insertion hole 301, and a rubber sleeve 201 is fitted on the lower side surface of the installation rod 202. The side surface of the rubber sleeve 201 is provided with anti-slip texture, and the side surface of the rubber sleeve 201 is interference-fitted with the inner surface of the insertion hole 301. By the cooperation of the installation rod 202 and the rubber sleeve 201 with the insertion hole 301, the aluminum alloy sleeve 3 can be further limited, and the aluminum alloy sleeve 3 and the screwdriver rod 1 can rotate together.

[0020] In use, the aluminum alloy sleeve 3 is first aligned with one end of the bit 101. Then, the insertion hole 301 at one end of the aluminum alloy sleeve 3 is aligned with the mounting rod 202 on one side surface of the positioning ring 2. After that, the aluminum alloy sleeve 3 is pushed onto the side surface of the bit 101. At this time, the mounting rod 202 and the rubber sleeve 201 are inserted into the insertion hole 301. When the screw is tightened, one end of the bit 101 is inserted into the groove of the screw. At this time, the ball bearing 306 on one side surface of the strong magnetic ring 304 inside the aluminum alloy sleeve 3 will contact the screw. The screw is attracted by the ball bearing 306 and the strong magnetic ring 304. During the tightening process, the ball bearing 306 will roll, thereby reducing the wear of the screw on the strong magnetic ring 304 and the ball bearing 306, thus reducing the wear on the strong magnetic ring and extending the service life of the strong magnetic ring bit.

[0021] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0023] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A strong magnetic ring integrated screwdriver bit, comprising a screwdriver bar (1), characterized in that: The two ends of the screwdriver bar (1) are fixedly connected to the screwdriver bit (101). The side surface of the screwdriver bit (101) is fixedly connected to the positioning ring (2). An aluminum alloy sleeve (3) is provided on one side of the positioning ring (2). The aluminum alloy sleeve (3) is sleeved on the outside of the screwdriver bit (101). A strong magnetic ring (304) is provided inside the aluminum alloy sleeve (3). The strong magnetic ring (304) is slidably installed inside the aluminum alloy sleeve (3). A ball bearing (306) is fixedly installed inside one side surface of the strong magnetic ring (304). A pushing component is provided on the other side surface of the strong magnetic ring (304). A limit component is provided inside one end of the aluminum alloy sleeve (3).

2. The integrated strong magnetic ring bit according to claim 1, characterized in that: The pushing assembly includes a spring (305), one end of which is fixedly connected to the other side surface of a strong magnetic ring (304), and the other end of which is fixedly connected to the inner wall of an aluminum alloy sleeve (3).

3. The integrated strong magnetic ring bit according to claim 1, characterized in that: The limiting component includes a limiting ring (303), which is fixedly connected to the inner wall of the aluminum alloy sleeve (3). The inner diameter of the limiting ring (303) is smaller than the outer diameter of the strong magnetic ring (304), and the thickness of the limiting ring (303) is smaller than the radius of the ball (306).

4. The integrated strong magnetic ring bit according to claim 1, characterized in that: An anode ceramic plate (302) is fixedly connected to one end of the aluminum alloy sleeve (3), and a cathode magnetic plate (203) is fixedly connected to one side surface of the positioning ring (2). The cathode magnetic plate (203) is aligned with the anode ceramic plate (302).

5. The integrated magnetic ring bit according to claim 1, characterized in that: One end of the aluminum alloy sleeve (3) is provided with a socket (301), and a mounting rod (202) is fixedly connected to one side surface of the positioning ring (2), with the mounting rod (202) aligned with the socket (301).

6. The integrated strong magnetic ring bit according to claim 5, characterized in that: The lower end side surface of the mounting rod (202) is fitted with a rubber sleeve (201), and the side surface of the rubber sleeve (201) is provided with anti-slip texture. The side surface of the rubber sleeve (201) is interference-fitted with the inner surface of the insertion hole (301).

Citation Information

Patent Citations

  • Screwdriver bit with strong magnetic ring

    CN212706494U