A drill bit quick change locking mechanism for an impact drill

Abstract

This utility model relates to the field of impact drilling technology and discloses a quick-change locking mechanism for impact drill bits. It includes an impact drill body, a switch button, and an output end. The output end is fixedly connected to the output end of the impact drill body via a coupling. An adjustment mechanism is provided on the output end, and an auxiliary mechanism is provided on the impact drill body. The adjustment mechanism includes a positioning groove, which is formed on the front inner wall of the output end. Positioning plates are slidably connected to the left and right inner walls of the positioning groove. An annular groove is formed on the front inner wall of the impact drill body, and an annular sleeve is slidably connected to the outer side wall of the output end. In this utility model, the cooperation between the positioning groove and the positioning plates provides precise guidance, the annular groove creates conditions for the positioning plates to rotate and adjust their position, and the linkage design of the annular sleeve, the movable plate, and the limiting rod can quickly lock and release the positioning plates, greatly simplifying the drill bit replacement process.

Description

Technical Field

[0001] This utility model relates to the field of impact drilling technology, and in particular to a quick-change locking mechanism for impact drill bits. Background Technology

[0002] Properly installing the drill bit is essential for the safe use of an impact drill. If you are unfamiliar with the operation, it is recommended to consult the product manual or a professional. After installation, run the drill idle for a few seconds to observe whether the drill bit rotates smoothly. Only proceed with operations after confirming that everything is correct.

[0003] Hold the impact drill body and rotate the chuck sleeve (outer sleeve of the chuck) clockwise with your other hand until the three jaws of the chuck are fully open and the opening diameter is larger than the diameter of the drill bit shank. If the chuck is tight, you can gently tap the chuck sleeve (be careful with the force to avoid damage), or hold the drill body and the chuck sleeve with both hands and rotate them in opposite directions to insert the drill bit shank (the part without the cutting edge) vertically into the center of the chuck, inserting it as far as possible to ensure that the drill bit and the chuck are coaxial (avoid tilting).

[0004] The locking and installation of impact drill bits has the following drawbacks: when manually tightening the drill bit using traditional methods, insufficient force can cause it to loosen. At the same time, novices may not be familiar with the mechanism and may not install it properly, making the installation of impact drill bits relatively complicated and prone to failure. To address these issues, a quick-change locking mechanism for impact drill bits is proposed. Summary of the Invention

[0005] To overcome the above shortcomings, this utility model provides a quick-change locking mechanism for impact drill bits, which aims to improve the problem of loosening caused by insufficient force when manually tightening drill bits during installation in the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a quick-change locking mechanism for an impact drill bit, comprising an impact drill body, a switch button, and an output end. The output end is fixedly connected to the output end of the impact drill body via a coupling. An adjustment mechanism is provided on the output end. An auxiliary mechanism is provided on the impact drill body. The adjustment mechanism includes a positioning groove, which is formed on the inner front wall of the output end. Positioning plates are slidably connected to the inner left and right sides of the positioning groove. An annular groove is formed on the inner front wall of the impact drill body. An annular sleeve is slidably connected to the outer side of the output end. A movable plate is fixedly connected to the inner side of the annular sleeve. A limit rod is fixedly connected to the outer front wall of the movable plate. A locking hole is formed on the inner front wall of the positioning plate. A drill bit is fixedly connected to the outer front wall of the positioning plate.

[0007] As a further description of the above technical solution: the auxiliary mechanism includes an L-shaped groove, which is formed on the front inner wall of the impact drill body. An L-shaped plate is slidably connected to the left inner wall of the L-shaped groove. A lighting fixture is fixedly connected to the top outer wall of the L-shaped plate. An adjusting plate is slidably connected to the top inner wall of the impact drill body. A positioning rod is fixedly connected to the left outer wall of the adjusting plate. A pull plate is fixedly connected to the top outer wall of the adjusting plate. A compression spring is fixedly connected to the right outer wall of the positioning rod.

[0008] As a further description of the above technical solution: the switch button is fixedly connected to the inner right side of the impact drill body, the annular groove is connected to the positioning groove, and the positioning plate is slidably connected to the inner rear side of the annular groove.

[0009] As a further description of the above technical solution: the outer side wall of the annular sleeve is provided with a groove, and a frosted pad is fixedly connected to the outer side wall of the groove.

[0010] As a further description of the above technical solution: the movable plate is slidably connected to the inner walls of the left and right sides of the output end, the outer side wall of the limiting rod is fixedly connected to a steel sleeve, and the limiting rod is engaged inside the locking hole.

[0011] As a further description of the above technical solution: the top outer wall of the lighting fixture is fixedly connected to an on / off switch, the positioning rod passes through the right inner wall of the L-shaped plate, and the positioning rod is engaged with the right inner wall of the L-shaped plate.

[0012] As a further description of the above technical solution: a silicone pad is fixedly connected to the top outer wall of the pull plate, and the end of the compression spring away from the adjustment plate is fixedly connected to the right inner wall of the impact drill body.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, the positioning groove and the positioning plate work together to provide precise guidance, the annular groove creates conditions for the positioning plate to rotate and adjust its position, and the linkage design of the annular sleeve, the movable plate and the limit rod can quickly lock and release the positioning plate, which greatly simplifies the drill bit replacement process, improves the operating efficiency, and at the same time ensures the stability of the drill bit after installation and reduces the risk of the drill bit loosening or falling off during operation.

[0015] 2. In this utility model, the lighting fixture can provide sufficient light to the work area in dim lighting conditions, making it easier for operators to clearly observe the drilling situation, improving the accuracy and safety of the operation. In addition, the cooperation of components such as L-shaped groove, L-shaped plate, positioning rod and compression spring makes the disassembly and maintenance of the lighting fixture simple and convenient, ensuring the stable performance of auxiliary functions and further improving the overall user experience of the impact drill. Attached Figure Description

[0016] Figure 1 This is a schematic front view of the overall design of a quick-change locking mechanism for an impact drill bit according to the present invention.

[0017] Figure 2 This is a schematic diagram showing the disassembled drill bit quick-change locking mechanism of an impact drill according to the present invention.

[0018] Figure 3 This is a schematic diagram of the adjustment mechanism of the quick-change locking mechanism for the drill bit of an impact drill proposed in this utility model.

[0019] Figure 4 This is a schematic diagram of the auxiliary mechanism of the quick-change locking mechanism for an impact drill bit proposed in this utility model.

[0020] Legend:

[0021] 1. Impact drill body; 2. Switch button; 3. Output end; 4. Adjustment mechanism; 41. Positioning groove; 42. Positioning plate; 43. Annular groove; 43. Annular sleeve; 44. Movable plate; 45. Limiting rod; 47. Locking hole; 48. Drill bit; 49. Concave-convex groove; 5. Auxiliary mechanism; 51. L-shaped groove; 52. L-shaped plate; 53. Lighting fixture; 54. On / off switch; 55. Adjustment plate; 56. Positioning rod; 57. Pull plate; 58. Compression 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] Reference Figures 1-3This utility model provides an embodiment of a quick-change locking mechanism for an impact drill bit, comprising an impact drill body 1, a switch button 2, and an output end 3. The output end 3 is fixedly connected to the output end of the impact drill body 1 via a coupling. An adjustment mechanism 4 is provided on the output end 3, and an auxiliary mechanism 5 is provided on the impact drill body 1. The adjustment mechanism 4 includes a positioning groove 41, which is formed on the front inner wall of the output end 3. Positioning plates 42 are slidably connected to the left and right inner walls of the positioning groove 41. The positioning groove 41 provides guidance and preliminary positioning for the insertion of the positioning plates 42, ensuring that the positioning plates 42 can be accurately installed on the output end 3. An annular groove 43 is formed on the front inner wall of the impact drill body 1, which serves as a guide for the positioning plates 42. The rotation provides space, allowing the positioning plate 42 to be adjusted in position so that it can be locked in place with the limiting rod 45. An annular sleeve 432 is slidably connected to the outer side wall of the output end 3. A movable plate 44 is fixedly connected to the inner side of the annular sleeve 432. A limiting rod 45 is fixedly connected to the front outer wall of the movable plate 44. The limiting rod 45 can be inserted into the locking hole 47 to limit and fix the positioning plate 42, preventing the positioning plate 42 from loosening or falling off during operation. A locking hole 47 is provided on the front inner wall of the positioning plate 42. A drill bit 48 is fixedly connected to the front outer wall of the positioning plate 42. The drill bit 48 is the component that directly performs drilling operations. It is connected to the output end 3 through the positioning plate 42 to obtain the power transmitted by the impact drill to complete the drilling work.

[0024] Reference Figures 2-4 The switch button 2 is fixedly connected to the inner right side of the impact drill body 1. The annular groove 43 is connected to the positioning groove 41. The positioning plate 42 is slidably connected to the inner rear side of the annular groove 43. The outer side wall of the annular sleeve 432 is provided with a concave-convex groove 49. The concave-convex groove 49 can increase the friction between the hand and the annular sleeve 432 and prevent slippage when the annular sleeve 432 is slidably operated. A frosted pad is fixedly connected to the outer side wall of the concave-convex groove 49. The frosted pad further enhances the anti-slip effect of the concave-convex groove 49 and improves the stability of the operator controlling the annular sleeve 432. The movable plate 44 is slidably connected to the inner walls of the left and right sides of the output end 3. A steel sleeve is fixedly connected to the outer side wall of the limit rod 45. The steel sleeve can enhance the strength and wear resistance of the limit rod 45, extend the service life of the limit rod 45, and ensure its locking effect is stable. The limit rod 45 is snapped into the inside of the locking hole 47.

[0025] Reference Figures 3-4The auxiliary mechanism 5 includes an L-shaped groove 51, which is formed on the front inner wall of the impact drill body 1. The L-shaped groove 51 provides installation space and positioning for the L-shaped plate 52, ensuring that the L-shaped plate 52 can be stably installed on the impact drill body 1. The L-shaped plate 52 is slidably connected to the left inner wall of the L-shaped groove 51. A lighting fixture 53 is fixedly connected to the top outer wall of the L-shaped plate 52. The lighting fixture 53 can provide illumination for the area around the drill bit 48 in dim lighting conditions, making it convenient for the operator to observe the drilling position and operation. An adjusting plate 55 is slidably connected to the top inner wall of the impact drill body 1. A positioning rod 56 is fixedly connected to the left outer wall of the adjusting plate 55. The positioning rod 56 can be inserted into the L-shaped plate 52. Inside 2, the L-shaped plate 52 is fixed to prevent it from falling out of the L-shaped groove 51 when the impact drill is working. A pull plate 57 is fixedly connected to the top outer wall of the adjusting plate 55. A compression spring 58 is fixedly connected to the right outer wall of the positioning rod 56. A switch 54 is fixedly connected to the top outer wall of the lighting fixture 53. The positioning rod 56 passes through the right inner wall of the L-shaped plate 52 and is snapped into the right inner wall of the L-shaped plate 52. A silicone pad is fixedly connected to the top outer wall of the pull plate 57. The silicone pad can increase the comfort of the hand when contacting the pull plate 57 and also play a role in anti-slip. The end of the compression spring 58 away from the adjusting plate 55 is fixedly connected to the right inner wall of the impact drill body 1.

[0026] Working principle: By inserting the positioning plate 42 into the positioning groove 41, and then rotating the positioning plate 42 to a certain position within the annular groove 43, the limiting rod 45 passes through the locking hole 47, fixing the positioning plate 42, thereby allowing the drill bit 48 to be quickly locked and installed. When replacement or disassembly is required, simply pull the annular sleeve 432 to move the movable plate 44 backward. The movement of the movable plate 44 drives the limiting rod 45 to move, separating the limiting rod 45 from the locking hole 47. Then, after rotating the positioning plate 42 to a certain position, pull the positioning plate 42... Separating from the positioning groove 41, the positioning plate 42 and the drill bit 48 can be easily disassembled and assembled. At the same time, in dim scenes, pressing the power switch 54 can turn on the lighting fixture 53 to illuminate the area around the drill bit 48, making it easier for personnel to observe and operate. When the lighting fixture 53 needs to be replaced, charged or maintained, the adjustment plate 55 can be moved by pulling the pull plate 57. The movement of the adjustment plate 55 moves the positioning rod 56, which separates from the L-shaped plate 52. Then, the L-shaped plate 52 can be pulled to separate from the L-shaped groove 51, making it easy to disassemble and assemble the lighting fixture 53.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick-change locking mechanism for a percussion drill bit, comprising a percussion drill body (1), a switch button (2), and an output end (3), characterized in that: The output end (3) is fixedly connected to the output end of the impact drill body (1) via a coupling. An adjustment mechanism (4) is provided on the output end (3), and an auxiliary mechanism (5) is provided on the impact drill body (1). The adjustment mechanism (4) includes a positioning groove (41), which is located on the inner wall of the front side of the output end (3). Positioning plates (42) are slidably connected to the inner walls of the left and right sides of the positioning groove (41). An annular groove (43) is provided on the inner wall of the front side of the impact drill body (1). An annular sleeve (432) is slidably connected to the outer wall of the side of the output end (3). A movable plate (44) is fixedly connected to the inner side of the annular sleeve (432). A limit rod (45) is fixedly connected to the outer wall of the front side of the movable plate (44). A locking hole (47) is provided on the inner wall of the front side of the positioning plate (42). A drill bit (48) is fixedly connected to the outer wall of the front side of the positioning plate (42).

2. The quick-change locking mechanism for an impact drill bit according to claim 1, characterized in that: The auxiliary mechanism (5) includes an L-shaped groove (51), which is opened on the front inner wall of the impact drill body (1). An L-shaped plate (52) is slidably connected to the left inner wall of the L-shaped groove (51). A lighting fixture (53) is fixedly connected to the top outer wall of the L-shaped plate (52). An adjusting plate (55) is slidably connected to the top inner wall of the impact drill body (1). A positioning rod (56) is fixedly connected to the left outer wall of the adjusting plate (55). A pull plate (57) is fixedly connected to the top outer wall of the adjusting plate (55). A compression spring (58) is fixedly connected to the right outer wall of the positioning rod (56).

3. The quick-change locking mechanism for an impact drill bit according to claim 1, characterized in that: The switch button (2) is fixedly connected to the inner right side of the impact drill body (1), the annular groove (43) is connected to the positioning groove (41), and the positioning plate (42) is slidably connected to the inner rear side of the annular groove (43).

4. The quick-change locking mechanism for an impact drill bit according to claim 1, characterized in that: The outer side wall of the annular sleeve (432) is provided with a groove (49), and a frosted pad is fixedly connected to the outer side wall of the groove (49).

5. The quick-change locking mechanism for an impact drill bit according to claim 1, characterized in that: The movable plate (44) is slidably connected to the inner walls of the left and right sides of the output end (3), and a steel sleeve is fixedly connected to the outer side wall of the limiting rod (45). The limiting rod (45) is engaged inside the locking hole (47).

6. The quick-change locking mechanism for an impact drill bit according to claim 2, characterized in that: The top outer wall of the lighting fixture (53) is fixedly connected with a switch (54), and the positioning rod (56) passes through the right inner wall of the L-shaped plate (52) and is engaged with the right inner wall of the L-shaped plate (52).

7. The quick-change locking mechanism for an impact drill bit according to claim 2, characterized in that: A silicone pad is fixedly connected to the top outer wall of the pull plate (57), and the end of the compression spring (58) away from the adjustment plate (55) is fixedly connected to the right inner wall of the impact drill body (1).

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