Drill bit assembly with threaded handle

Abstract

The utility model discloses a drill bit assembly with a threaded handle, which comprises the threaded handle, a fixing structure and a drill bit structure, the left end face of the threaded handle is fixedly connected with the fixing structure, and the left side of the fixing structure is connected with the drill bit structure. Pressing rods of a first limiting structure and a second limiting structure are pressed at the same time, the pressing rod of the first limiting structure drives a straight rod to move downwards, the straight rod drives a connecting column to move downwards, the connecting column drives a limiting block to move downwards, the limiting block downwards presses a spring so that the spring can contract, and meanwhile the limiting block drives a clamping block to move downwards; and the clamping block is separated from the clamping groove, and the second limiting structure moves according to the same principle, so that the drill bit is released from limiting, the effect of conveniently disassembling and assembling the drill bit is achieved, stable limiting can be provided for the drill bit, and the drill bit is prevented from loosening during use.

Description

Technical Field

[0001] The utility model relates to the field of drill bits, in particular to a drill bit assembly with a threaded shank. Background Art

[0002] In the woodworking field, the threaded shank drill bit can be used to drill holes in wood; in the concrete field, it can be used to drill holes in concrete. The drill bit is mainly made of cemented carbide, which has the characteristics of high hardness and good wear resistance, which can improve the efficiency of drilling; the drill bit also has the characteristics of impact resistance and fatigue resistance, which can extend the service life of the drill bit.

[0003] The Chinese patent with the patent number CN213540292U discloses a drill bit assembly with a threaded shank. The drill bit and the drill shank are connected by providing a positioning column with a positioning block and a positioning hole with a limiting groove in the drill shank. External threads are provided on the outer wall of the drill shank and the outer wall of the fixing column, internal threads are provided on the inner wall of the locking ring, and the drill bit and the drill shank are fixed by the locking ring. The device changes the drill bit and the drill shank integrated structure in the prior art into a structure in which the drill bit and the drill shank are separated. When the drill bit is damaged, the drill bit can be directly replaced, and the drill rod can continue to be used, thereby reducing the waste of materials. The setting of the locking ring allows the drill bit and the drill shank to be quickly connected, which greatly facilitates the installation or replacement of the drill bit and is very convenient to use. When the drill bit is worn and polished, its length becomes shorter and does not meet the drilling needs, the positioning column inserted into the positioning hole is pulled outward for a part and then fixed by the locking ring, thereby increasing the length of the drill bit in disguise, so that the drill bit can continue to be used. The device has the advantages of flexible use and material saving.

[0004] Although the above-mentioned drill bit assembly with a threaded shank has certain advantages in terms of the ability to save materials, fixing the drill bit and the drill shank by rotating the locking ring may cause the drill bit to detach from the drill shank due to loosening of the locking ring when the drill bit is in use, which is dangerous. Utility Model Content

[0005] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a drill bit assembly with a threaded shank.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a drill bit assembly with a threaded shank, comprising a threaded shank, a fixing structure and a drill bit structure, the left end face of the threaded shank is fixedly connected to the fixing structure, the left side of the fixing structure is connected to the drill bit structure, the fixing structure comprises a round block, a first round groove, a first limiting structure and a second limiting structure, a first round groove is opened in the middle part of the upper end face of the round block, the first limiting structure and the second limiting structure are respectively fixed on the upper and lower sides of the middle part of the left end face of the round block, and the right end face of the round block is fixedly connected to the threaded shank.

[0007] Optionally, the drill bit structure includes a drill bit, a second circular groove and a clamping groove, a second circular groove is opened in the middle of the right end face of the drill bit, clamping grooves are opened on the upper and lower left sides of the inner wall of the second circular groove respectively, and the first limiting structure and the second limiting structure of the inner wall of the second circular groove are fitted together.

[0008] Optionally, the second limiting structure includes a rectangular groove, a spring, a limiting block, a clamping block and a transmission structure, the lower end surface of the inner wall of the rectangular groove is fixedly connected to one end of the spring, and the other end of the spring is fixedly connected to the limiting block, the upper end surface of the limiting block is fixed with a clamping block, the upper end surface of the clamping block passes through the cylinder, the rectangular groove is arranged in the middle of the left side of the cylinder, and the right end surface of the cylinder is fixedly connected to the cylindrical block.

[0009] Optionally, the transmission structure includes a connecting column, a straight rod and a pressure rod, the lower side of the right end surface of the connecting column is fixedly connected to the straight rod, the upper right end of the straight rod is fixedly connected to the pressure rod, the pressure rod is slidably matched with the first circular groove, and the upper left end of the connecting column passes through the cylinder and is fixedly connected to the limit block.

[0010] Optionally, a sliding groove is provided in the middle of the left end surface of the round block, and the straight rod is slidably matched with the sliding groove to facilitate the straight rod to slide up and down.

[0011] Optionally, the first limiting structure and the second limiting structure have the same structure and are symmetrically distributed, which is conducive to stable fixation of the drill bit structure.

[0012] Optionally, the inner wall of the slot fits tightly with the outer side of the block, which is helpful to provide positioning for the drill bit.

[0013] Beneficial effects of the utility model:

[0014] The utility model discloses a drill bit assembly with a threaded shank, which is provided with a fixing structure and a drill bit structure, and presses a pressure rod of a first limiting structure and a second limiting structure at the same time, so that the pressure rod of the first limiting structure drives a straight rod to move downward, and the straight rod drives a connecting column to move downward, and the connecting column drives a limiting block to move downward, and the limiting block presses a spring downward to make the spring contract, and at the same time the limiting block drives a clamping block to move downward, and the clamping block is separated from a clamping groove, and the second limiting structure moves according to the same principle, so that the drill bit is released from the limit, and the effect of facilitating the disassembly and assembly of the drill bit is achieved, and a stable limit can be provided for the drill bit, so as to avoid the drill bit from loosening when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the fixed structure of the utility model;

[0018] Figure 4 This utility model structure Figure 2 A local enlarged view of point A;

[0019] Figure 5 This is a schematic diagram of the first limiting structure of the utility model.

[0020] Among them: threaded handle-1, fixing structure-2, drill bit structure-3, round block-21, first circular groove-22, first limiting structure-23, second limiting structure-24, sliding groove-25, drill bit-31, second circular groove-32, clamping groove-33, rectangular groove-241, spring-242, limiting block-243, clamping block-244, transmission structure-245, connecting column-2451, straight rod-2452, and pressure rod-2453. DETAILED DESCRIPTION

[0021] In order to further explain the technical solution of the present utility model, it is described in detail through specific embodiments below.

[0022] See also Figure 1 , Figure 2 and Figure 3 The utility model provides a drill bit assembly with a threaded shank, comprising a threaded shank 1, a fixing structure 2 and a drill bit structure 3. The left end face of the threaded shank 1 is fixedly connected to the fixing structure 2, and the left side of the fixing structure 2 is connected to the drill bit structure 3. The fixing structure 2 comprises a round block 21, a first round groove 22, a first limiting structure 23 and a second limiting structure 24. A first round groove 22 is provided in the middle of the upper end face of the round block 21, and the first limiting structure 23 and the second limiting structure 24 are respectively fixed on the upper and lower sides of the middle of the left end face of the round block 21. The right end face of the round block 21 is fixedly connected to the threaded shank 1, and a sliding groove 25 is provided in the middle of the left end face of the round block 21, and a straight rod 2452 is slidably matched with the sliding groove 25, so that the straight rod can slide up and down. The structures of the first limiting structure 23 and the second limiting structure 24 are consistent and symmetrically distributed, which is conducive to the stable fixation of the drill bit structure 3.

[0023] See also Figure 4 The utility model provides a drill bit assembly with a threaded shank, the drill bit structure 3 includes a drill bit 31, a second circular groove 32 and a clamping groove 33. The middle part of the right end surface of the drill bit 31 is provided with a second circular groove 32, and the upper and lower left sides of the inner wall of the second circular groove 32 are respectively provided with clamping grooves 33. The first limiting structure 23 and the second limiting structure 24 of the inner wall of the second circular groove 32 are fitted, and the inner wall of the clamping groove 33 is tightly fitted with the outer side of the clamping block 244, which is conducive to providing limitation for the drill bit 31.

[0024] See also Figure 5The utility model provides a drill assembly with a threaded shank. The second limiting structure 24 includes a rectangular groove 241, a spring 242, a limiting block 243, a clamping block 244 and a transmission structure 245. The lower end surface of the inner wall of the rectangular groove 241 is fixedly connected to one end of the spring 242, and the other end of the spring 242 is fixedly connected to the limiting block 243. The upper end surface of the limiting block 243 is fixed with a clamping block 244. The upper end surface of the clamping block 244 penetrates the cylinder. The rectangular groove 241 It is arranged in the middle of the left side of the cylinder, and the right end face of the cylinder is fixedly connected to the round block 21. The transmission structure 245 includes a connecting column 2451, a straight rod 2452 and a pressure rod 2453. The lower side of the right end face of the connecting column 2451 is fixedly connected to the straight rod 2452, and the upper right end of the straight rod 2452 is fixedly connected to the pressure rod 2453. The pressure rod 2453 is slidably matched with the first circular groove 22. The upper left end of the connecting column 2451 passes through the cylinder and is fixedly connected to the limit block 243.

[0025] Here’s how it works:

[0026] First, the threaded handle 1 of the new component is fixedly connected to the outside, and the pressing rod 2453 of the first limiting structure 23 of the fixed structure 2 is pressed, and the pressing rod 2453 slides with the first circular groove 22, so that the pressing rod 2453 drives the straight rod 2452 to move downward, and the straight rod 2452 slides with the sliding groove 25, so that the straight rod 2452 drives the connecting column 2451 to move downward, and the connecting column 2451 drives the limiting block 243 to move downward;

[0027] Second, the limit block 243 moves downward and drives the clamping block 244 to move downward, and the spring 242 is squeezed by the limit block 243 to shrink, the clamping block 244 is separated from the clamping groove 33 of the drill bit structure 3, and at the same time presses the pressure rod 2453 of the second limit structure 24, the second limit structure 24 moves according to the same principle, so that the drill bit 31 is released from the limit, and the drill bit 31 can be moved to the left, the first limit structure 23 and the second limit structure 24 are slidably matched with the inner wall of the second circular groove 32, and finally the drill bit 31 is separated from the fixed structure 2, so as to achieve the effect of facilitating the disassembly and assembly of the drill bit 31, and can avoid the possibility of loosening of the drill bit 31 when it is used, thereby reducing the danger during work.

[0028] The control method of the present invention is to control by manually starting and closing the switch. The wiring diagram of the power element and the provision of power supply are common knowledge in the field, and the present invention is mainly used to protect mechanical devices, so the present invention will not explain the control method and wiring arrangement in detail.

[0029] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0030] The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A drill bit assembly with a threaded shank, Features: The invention comprises a threaded shank (1), a fixing structure (2) and a drill bit structure (3); the left end face of the threaded shank (1) is fixedly connected to the fixing structure (2); the left side of the fixing structure (2) is connected to the drill bit structure (3); the fixing structure (2) comprises a round block (21), a first round groove (22), a first limiting structure (23) and a second limiting structure (24); a first round groove (22) is provided in the middle of the upper end face of the round block (21); the first limiting structure (23) and the second limiting structure (24) are respectively fixed on the upper and lower sides of the middle of the left end face of the round block (21); and the right end face of the round block (21) is fixedly connected to the threaded shank (1).

2. A drill bit assembly with a threaded shank according to claim 1, Features: The drill bit structure (3) comprises a drill bit (31), a second circular groove (32) and a clamping groove (33); the second circular groove (32) is provided in the middle of the right end surface of the drill bit (31); clamping grooves (33) are provided at the upper and lower left sides of the inner wall of the second circular groove (32); the first limiting structure (23) and the second limiting structure (24) of the inner wall of the second circular groove (32) are fitted together.

3. A drill bit assembly with a threaded shank according to claim 1, Features: The second limiting structure (24) comprises a rectangular groove (241), a spring (242), a limiting block (243), a clamping block (244) and a transmission structure (245); the lower end surface of the inner wall of the rectangular groove (241) is fixedly connected to one end of the spring (242), and the other end of the spring (242) is fixedly connected to the limiting block (243); the upper end surface of the limiting block (243) is fixed with a clamping block (244), and the upper end surface of the clamping block (244) passes through the cylinder; the rectangular groove (241) is arranged in the middle of the left side of the cylinder, and the right end surface of the cylinder is fixedly connected to the round block (21).

4. A drill bit assembly with a threaded shank according to claim 3, Features: The transmission structure (245) comprises a connecting column (2451), a straight rod (2452) and a pressure rod (2453); the lower side of the right end surface of the connecting column (2451) is fixedly connected to the straight rod (2452); the upper right end of the straight rod (2452) is fixedly connected to the pressure rod (2453); the pressure rod (2453) is slidably matched with the first circular groove (22); the upper left end of the connecting column (2451) passes through the circular column and is fixedly connected to the limit block (243).

5. A drill bit assembly with a threaded shank according to claim 1, Features: A sliding groove (25) is provided in the middle of the left end surface of the round block (21), and the straight rod (2452) is slidably matched with the sliding groove (25).

6. A drill bit assembly with a threaded shank according to claim 1, Features: The first limiting structure (23) and the second limiting structure (24) have the same structure and are symmetrically distributed.

7. A drill bit assembly with a threaded shank according to claim 2, Features: The inner wall of the clamping groove (33) is tightly fitted with the outer side of the clamping block (244).

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