Dustproof device for drill bit

Abstract

The utility model relates to the technical field of drill bit dust prevention, in particular to a drill bit dust prevention device which comprises a supporting seat, and a fixing assembly is arranged on the supporting seat and used for limiting a drill bit. The telescopic sleeve is arranged on the supporting seat through a mounting plate and can do telescopic motion on the supporting seat; a fixing ring is fixed to the end of the telescopic sleeve, a fixing plate is fixed to the supporting seat, a fixing pipe is fixed in the fixing plate and fixed in the mounting plate, a wire harness is further arranged in the fixing pipe, and the two ends of the wire harness penetrate through the fixing pipe and are fixed to the edge of the fixing ring. According to the dustproof device for the drill bit, by pulling the wire harness, the telescopic sleeve can be compressed, the drill bit is exposed for positioning, after positioning is completed, the wire harness is loosened, the telescopic sleeve can recover more quickly to completely shield the drill bit and enable the fixing ring to be tightly attached to the wall face through tension of the reset spring, the dustproof effect is achieved, operation is easy and convenient, and practicability is high. And the working efficiency is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of drill bit dust prevention technology, specifically a drill bit dust prevention device. Background Technology

[0002] A drill bit is a cutting tool used to drill holes in materials. It is widely used in metal processing, woodworking, construction, mining and other fields. However, a lot of dust is scattered during the drilling process. In order to protect the health of operators and keep the working environment clean, dust covers are usually installed around the drill bit and the dust is reduced by rubber or plastic rings attached to the wall.

[0003] However, after the dust cover is installed, the contact area between the drill bit tip and the working face is blocked, making it difficult for the operator to directly observe the alignment of the drill bit with the marked point during positioning. Therefore, during positioning, the dust cover is usually removed first for rough positioning, and after leaving a slight mark by drilling, the dust cover is put back to complete the drilling. The operation steps are cumbersome and affect work efficiency.

[0004] Based on this, a drill bit dust prevention device is proposed to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a drill bit dustproof device that directly compresses the dust cover to expose and position the drill bit tip, eliminating the need to remove the dust cover and making operation more convenient.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a drill bit dust prevention device, comprising:

[0007] A support base, on which a fixing component is provided for limiting the position of the drill bit;

[0008] The telescopic sleeve is mounted on the support base via a mounting plate and can extend and retract on the support base.

[0009] A fixing ring is fixed to the end of the telescopic sleeve, a fixing plate is fixed to the support base, a fixing tube is fixed inside the fixing plate, the fixing tube is fixed inside the mounting plate, and a wire harness is also provided inside the fixing tube. The two ends of the wire harness pass through the fixing tube and are fixed to the edge of the fixing ring. By pulling the wire harness, the telescopic sleeve can be compressed to expose the drill bit, which makes it easy to locate the position of the hole to be drilled.

[0010] Furthermore, the fixing component includes a U-shaped clamp plate movably disposed on the support base. The two ends of the U-shaped clamp plate pass through and extend to the bottom of the support base and are locked by a locking member. By locking by the locking member, the drill sleeve passes through the U-shaped clamp plate and is locked to the support base by the U-shaped clamp plate.

[0011] Furthermore, the locking element is a nut threaded onto the end of the U-shaped clamp. By tightening the nut, the drill bit can be locked onto the support by the U-shaped clamp.

[0012] Furthermore, the mounting plate is equipped with a sealed bearing corresponding to the opening of the telescopic sleeve. When the drill bit rotates, the sealed bearing can keep a certain distance between the drill bit and the telescopic sleeve, so that the protective cover will not rotate with it.

[0013] Furthermore, a return spring is provided on the outer side of the telescopic sleeve. The return spring is located between the fixed ring and the mounting plate. The tension of the return spring can also make the telescopic sleeve recover more quickly and make the fixed ring fit more tightly against the wall, preventing dust from overflowing.

[0014] Furthermore, a connecting plate is fixed to the bottom of the support base. A T-shaped rod with one end penetrating through and extending to one side of the connecting plate is provided inside the connecting plate. A U-shaped abutment plate is fixed to the end of the T-shaped rod. A compression spring is sleeved on the outer periphery of the T-shaped rod between the U-shaped abutment plate and the connecting plate. When the U-shaped abutment plate is placed around the area to be drilled and pressed firmly against the support base, the compression spring makes the U-shaped abutment plate fit tightly against the wall, making the drilling process more stable.

[0015] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0016] 1. This drill bit dustproof device compresses the telescopic sleeve by pulling the wiring harness, exposing the drill bit for positioning. After positioning, releasing the wiring harness allows the tension of the return spring to quickly restore the telescopic sleeve, completely covering the drill bit and ensuring a tight fit between the fixing ring and the wall, achieving a dustproof effect. It is simple and convenient to operate, effectively improving work efficiency.

[0017] 2. After positioning, the U-shaped abutment plate of this drill bit dustproof device is placed around the area to be drilled. The support base is pressed firmly against the U-shaped abutment plate to make it fit tightly against the wall. During the movement, the gap between the connecting plate and the U-shaped abutment plate becomes smaller, and the compression spring is compressed. The tension of the compression spring makes the U-shaped abutment plate more firmly pressed against the wall, which helps to improve the stability during the drilling process. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a bottom-view perspective view of the structure of this utility model;

[0020] Figure 3 This is a top perspective view of the structure of this utility model.

[0021] In the diagram: 1. Support base; 2. U-shaped clamp; 3. Nut; 4. Mounting plate; 5. Fixing plate; 6. Fixing tube; 7. Connecting plate; 8. U-shaped abutment plate; 9. T-shaped rod; 10. Compression spring; 11. Wire harness; 12. Telescopic sleeve; 13. Fixing ring; 14. Return spring. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-3 The drill bit dustproof device in this embodiment includes a support base 1, on which a fixing component is provided to restrict the drill bit to the support base 1. The support base 1 is also provided with a telescopic sleeve 12 through a mounting plate 4. The drill bit extends into the telescopic sleeve 12, and the telescopic sleeve 12 blocks the dust when the drill bit is working, thereby achieving the dustproof effect.

[0024] When in use, the drill bit is fixed to the support base 1 by the fixing component, and the telescopic sleeve 12 can cover the drill bit by driving the drill bit to rotate, so as to prevent dust and ensure that no dust will spill out.

[0025] As a specific structure of a fixing component, the fixing component includes a U-shaped clamp 2 movably disposed on the support base 1, with both ends of the U-shaped clamp 2 penetrating and extending below the support base 1 and locked by a locking member.

[0026] The drill bit's sleeve-shaped outer shell is passed through the U-shaped clamp 2 until the drill bit extends into the telescopic sleeve 12. After being locked by the locking element, the U-shaped clamp 2 can restrict the drill bit to the support seat 1.

[0027] The locking component is a nut 3 that is threaded onto the outer periphery of the end of the U-shaped clamp 2. Tightening the nut 3 will restrict the drill bit to the support seat 1 by the U-shaped clamp 2.

[0028] When fixing, first pass the sleeve-shaped outer shell of the drill bit through the U-shaped clamp 2, so that the drill bit passes through the mounting plate 4 and enters the telescopic sleeve 12. Then, move the U-shaped clamp 2 down to press the outer shell onto the support base 1. Then tighten the nut 3, and the drill bit can be restricted to the support base 1 by the U-shaped clamp 2. The top surface of the support base 1 is also provided with an arc-shaped groove, which facilitates better fit with the sleeve-shaped outer shell. Finally, by driving the drill bit to rotate, the telescopic sleeve 12 can cover the drill bit, which plays a role in preventing dust and ensuring that no dust will spill out.

[0029] In addition, a sealed bearing corresponding to the opening of the telescopic sleeve 12 is provided inside the mounting plate 4, and the end diameter of the telescopic sleeve 12 installed on the side of the mounting plate 2 is larger than the outer ring diameter of the sealed bearing. The drill bit can be inserted into the telescopic sleeve 12 through the sealed bearing. When the drill bit rotates, the sealed bearing can keep a certain distance between the drill bit and the telescopic sleeve 12, so that the telescopic sleeve 12 will not rotate with it.

[0030] Since the drill bit is difficult to position after being installed on the support base 1 and covered by the telescopic sleeve 12, in this embodiment, the telescopic sleeve 12 is made of a telescopic material, such as a rubber corrugated dust cover made of rubber material. A fixing ring 13 is fixed to the large end face of the telescopic sleeve 12. A pair of fixing plates 5 are fixed on the support base 1. A fixing tube 6 is fixed inside the fixing plate 5. The fixing tube 6 is fixed inside the mounting plate 4. A wire harness 11 is also provided inside the fixing tube 6. The two ends of the wire harness 11 pass through the pair of fixing tubes 6 respectively and are fixed to the edge of the fixing ring 13.

[0031] By pulling the wire harness 11, the telescopic sleeve 12 is compressed, exposing the drill bit, which makes it easy to locate the position of the hole to be drilled.

[0032] It should be noted that the length of the harness 11 is not limited to the length shown in the attached figure; its length can be extended to the height of the operator for convenient use.

[0033] To enhance the elasticity of the telescopic sleeve 12 during extension and retraction, a return spring 14 is fitted on the outer side of the telescopic sleeve 12. The return spring 14 is located between the fixing ring 13 and the mounting plate 4 and matches the size of the telescopic sleeve 12.

[0034] When the fixing ring 13 is pulled by the wire harness 11, the telescopic sleeve 12 and its outer periphery return spring 14 are also compressed. When the wire harness 11 is released, the tension of the return spring 14 can make the telescopic sleeve 12 recover more quickly and make the fixing ring 13 fit more tightly against the wall to prevent dust from overflowing.

[0035] In addition, when drilling holes with the drill bit close to the wall, in order to improve the stability of the entire device, a connecting plate 7 is fixed at the bottom of the support base 1. A pair of T-shaped rods 9 are provided inside the connecting plate 7, with one end penetrating and extending to one side of the connecting plate 7. The ends of the pair of T-shaped rods 9 are jointly fixed with a U-shaped abutment plate 8. A compression spring 10 is sleeved on the outer periphery of the T-shaped rods 9 between the U-shaped abutment plate 8 and the connecting plate 7.

[0036] Place the U-shaped abutment plate 8 around the area to be drilled, and press it firmly against the support base 1 to make the U-shaped abutment plate 8 fit tightly against the wall. During the movement, the gap between the connecting plate 7 and the U-shaped abutment plate 8 becomes smaller, the compression spring 10 is compressed, and the tension of the compression spring 10 makes the U-shaped abutment plate 8 more firmly pressed against the wall, making the drilling process more stable.

[0037] In summary, in use, the sleeve-shaped outer shell of the drill bit is first passed through the U-shaped clamp 2, allowing the drill bit to pass through the sealed bearing in the mounting plate 4 and enter the telescopic sleeve 12. The U-shaped clamp 2 is then lowered, and the nut 3 is tightened, thus securing the drill bit to the support base 1. Next, by pulling the wiring harness 11, the telescopic sleeve 12 is compressed, exposing the drill bit for positioning. After positioning, the U-shaped abutment plate 8 is placed around the area to be drilled and pressed firmly against the support base 1. This allows the U-shaped abutment plate 8 to fit tightly against the wall. During the movement, the gap between the connecting plate 7 and the U-shaped abutment plate 8 decreases, and the compression spring 10 is compressed. The tension of the compression spring 10 makes the U-shaped abutment plate 8 more firmly pressed against the wall. At this time, the wire harness 11 is released, and the tension of the return spring 14 allows the telescopic sleeve 12 to recover more quickly, completely covering the drill bit and making the fixing ring 13 fit tightly against the wall. Finally, the drill bit can be driven to rotate to drill a hole, achieving a dustproof effect.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] 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 dust prevention device for drill bits, characterized in that, include: Support base (1), on which a fixing component is provided for limiting the drill bit; The telescopic sleeve (12) is mounted on the support base (1) via the mounting plate (4) and can extend and retract on the support base (1); The end of the telescopic sleeve (12) is fixed with a fixing ring (13), the support base (1) is fixed with a fixing plate (5), the fixing plate (5) is fixed with a fixing tube (6), the fixing tube (6) is fixed in the mounting plate (4), and the fixing tube (6) is also provided with a wire harness (11), the two ends of the wire harness (11) pass through the fixing tube (6) and are fixed to the edge of the fixing ring (13).

2. The drill bit dust prevention device according to claim 1, characterized in that: The fixing component includes a U-shaped clamp (2) movably mounted on the support base (1), with both ends of the U-shaped clamp (2) extending through and below the support base (1) and locked by a locking member.

3. A dust prevention device for drill bits according to claim 2, characterized in that: The locking element is a nut (3) that is threaded onto the end of the U-shaped clamp (2).

4. A dust prevention device for drill bits according to claim 1, characterized in that: The mounting plate (4) is provided with a sealed bearing corresponding to the opening of the telescopic sleeve (12).

5. A dust prevention device for drill bits according to claim 1, characterized in that: A return spring (14) is fitted on the outer side of the telescopic sleeve (12), and the return spring (14) is located between the fixing ring (13) and the mounting plate (4).

6. A drill bit dust prevention device according to claim 1, characterized in that: The bottom of the support base (1) is fixed with a connecting plate (7). A T-shaped rod (9) with one end penetrating through and extending to one side of the connecting plate (7) is provided inside the connecting plate (7). A U-shaped abutment plate (8) is fixed at the end of the T-shaped rod (9). A compression spring (10) located between the U-shaped abutment plate (8) and the connecting plate (7) is sleeved on the outer periphery of the T-shaped rod (9).

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