A kind of clamp spring type chuck magnetism screw fixing device and chuck

Abstract

The utility model discloses a simple structure, good card spring formula bit magnetic screw fixing device and bit. Adopted technical scheme includes: bit cover, magnetic ring and card spring, the bit cover is equipped with the center hole for the bit to wear, and both sides are equipped with the mounting hole through the center hole, the magnetic ring is established in the bit cover front end, the card spring is installed in the mounting hole of bit cover, and partial side wall stretches into the center hole and forms the joint part.

Description

Technical Field

[0001] This utility model belongs to the field of hardware tools, and in particular relates to a magnetic screw fastener. Background Technology

[0002] A magnetic bit holder is a device that attaches to the front of a screwdriver bit, using magnetic force to hold the screw in place. This prevents the screw from falling out during operation and improves work efficiency. Traditional magnetic bit holders typically use a steel ball in a retainer to hold the bit in place. However, the assembly requirements between the steel ball and the retainer are very high, resulting in high costs and a high risk of damage. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a snap ring type magnetic screw fastener and screwdriver bit that has a simple structure and good stability.

[0004] To solve the above problems, the technical solution adopted by this utility model includes: a bit sleeve, a magnetic ring, and a retaining spring. The bit sleeve has a central hole for the bit to pass through and mounting holes on both sides that pass through the central hole. The magnetic ring is located at the front end of the bit sleeve. The retaining spring is installed in the mounting hole of the bit sleeve, and part of its side wall extends into the central hole to form a locking part.

[0005] The side wall of the bit sleeve is provided with a set of anti-slip ribs.

[0006] The front end of the snap ring is bent to form a fixing part.

[0007] A gap is left between the retaining ring and the mounting hole.

[0008] The upper end of the central hole is provided with a flared opening.

[0009] The gap distance is 0.5-1mm. A bit includes a bit body, the front end of which is provided with the aforementioned snap ring type magnetic screw retainer.

[0010] The front end of the bit body is provided with a positioning groove that engages with the forming snap-fit ​​portion.

[0011] The advantages of this utility model of spring-loaded screwdriver bit magnetic screw fastener and screwdriver bit are as follows: By setting a spring inside the screwdriver bit sleeve, the spring is used to lock the screwdriver bit in place, which has the advantages of simple structure, good stability and easy production.

[0012] The present invention will be further described below with reference to the accompanying drawings. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the snap ring type magnetic screw fastener for screwdriver bits of this utility model; Figure 2 This is a top view of the spring clip type magnetic screwdriver bit holder of this utility model. Figure 3 This is an exploded view of the snap ring type magnetic screw fastener for screwdriver bits of this utility model; Figure 4 This is a cross-sectional view of the snap ring type magnetic screw fastener of this utility model; Figure 5 This is a schematic diagram of the structure of the snap ring of this utility model; Figure 6 This is a schematic diagram of the structure of the bit of this utility model; Figure 7 This is a partial structural schematic diagram of the bit of this utility model. Detailed Implementation Example 1:

[0014] Reference Figure 1-5 The present invention relates to a snap-ring type magnetic screwdriver bit holder, comprising a bit sleeve 1, a magnetic ring 2, and a snap-ring 3. The bit sleeve 1 has a central hole 4 for the bit to pass through, and mounting holes 5 on both sides of the bit sleeve 1 through the central hole 4. The magnetic ring 2 is located at the front end of the bit sleeve 1, and the snap-ring 3 is installed in the mounting hole 5 of the bit sleeve 1, with a portion of the snap-ring 3's sidewall extending into the central hole 4 to form a snap-fit ​​portion 6.

[0015] Preferably, the side wall of the bit sleeve 1 is provided with a set of anti-slip ribs 7 to play an anti-slip role.

[0016] Preferably, the front end of the retaining spring 3 is bent to form a fixing part 8. During assembly, the C-shaped retaining spring 3 is first inserted into the mounting hole 5 of the bit sleeve 1, and then the front end of the retaining spring 3 is bent inward to form the fixing part 8, so as to fix the retaining spring 3.

[0017] Preferably, a gap 9 is left between the retaining spring 3 and the mounting hole 5. The distance 9 is 0.5-1mm. This allows the retaining spring 3 to have a certain opening space, making it easier to insert the screwdriver bit.

[0018] Preferably, the upper end of the central hole 4 is provided with a flared opening 10, making it easier to insert the bit. Example 2:

[0019] Reference Figure 6-7 The present invention provides a bit body 11, the front end of which is provided with a snap-fit ​​type magnetic screw fastener a as described in Embodiment 1. During assembly, the snap-fit ​​type magnetic screw fastener a is simply inserted into the front end of the bit body 11. The front end of the bit body 11 is provided with a positioning groove 12 that engages with the snap-fit ​​portion 6 to improve the stability of the connection between the two.

[0020] The foregoing is not intended to limit the present invention in any way. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed structure and technical content to create equivalent embodiments without departing from the scope of the present invention. However, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A spring-loaded screwdriver bit magnetic screw fastener, characterized in that: The tool includes a bit sleeve (1), a magnetic ring (2), and a retaining ring (3). The bit sleeve (1) has a central hole (4) for the bit to pass through, and mounting holes (5) through the central hole (4) are provided on both sides. The magnetic ring (2) is located at the front end of the bit sleeve (1). The retaining ring (3) is installed in the mounting hole (5) of the bit sleeve (1), and part of its side wall extends into the central hole (4) to form a snap-fit ​​part (6).

2. The snap ring type magnetic screwdriver bit holder according to claim 1, characterized in that: The side wall of the bit sleeve (1) is provided with a set of anti-slip ribs (7).

3. The snap ring type magnetic screwdriver bit holder according to claim 1, characterized in that: The front end of the snap ring (3) is bent to form a fixing part (8).

4. The snap ring type magnetic screwdriver bit holder according to claim 1, characterized in that: A gap (9) is left between the retaining ring (3) and the mounting hole (5).

5. The snap ring type magnetic screwdriver bit holder according to claim 1, characterized in that: The upper end of the central hole (4) is provided with a flared mouth (10).

6. The snap ring type magnetic screwdriver bit holder according to claim 4, characterized in that: The distance of the gap (9) is 0.5-1mm.

7. A bit, comprising a bit body (11), characterized in that: The front end of the bit body (11) is provided with a snap ring type bit magnetic screw fastener (a) as described in any one of claims 1-6.

8. A bit according to claim 7, characterized in that: The front end of the bit body (11) is provided with a positioning groove (12) that is positioned and engaged with the forming snap-fit ​​part (6).

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