Alloy tapper easy to install

Abstract

The alloy tapper easy to install comprises an electric drill end and a tapper body, the tapper body is fixedly installed below the electric drill end, an adjusting sleeve is connected to the electric drill end in a threaded mode, and a limiting assembly is arranged below the adjusting sleeve. The limiting assembly comprises a mounting base, inserting rods are movably inserted into the side face of the mounting base, the inserting rods are annularly arranged on the mounting base, limiting rods are fixedly installed at the inner ends of the adjacent inserting rods, limiting blocks are fixedly installed on the inner sides of the adjacent limiting rods, the inserting rods are movably sleeved with reset springs, and the reset springs are arranged on the inner side of the mounting base; a drill bit rod is arranged in the tapper body, and an inserting shaft is arranged above the drill bit rod. Through the arrangement of the limiting assembly, the tapper and the end of the electric drill can be fixed from multiple directions, assistance of bolts and special tools is not needed, and the tapper is easy to install and operate.

Description

Technical Field

[0001] The utility model relates to the technical field of hole openers, in particular to an alloy hole opener that is easy to install. Background Art

[0002] With the rapid development of science and technology, people have more tools to choose from for processing in daily life. The most common ones are hole openers. Hole openers are a special type of circular saw used to process circular holes in industry or engineering. They can be installed on power tools such as hand drills, impact drills, and radial drills. They are simple and flexible to operate, easy to carry, safe, and have a wide range of uses.

[0003] In the prior art, hole saws are typically attached to electric drill bits using multiple bolts arranged in a ring around the outside of the drill bit to secure the hole saw to the drill bit. However, this method requires removing multiple bolts one by one when replacing the hole saw, which is time-consuming and labor-intensive, reducing the efficiency of hole saw replacement. Furthermore, the need for tools makes replacement of the hole saw extremely inconvenient. To address this issue, we propose an easy-to-install alloy hole saw. Utility Model Content

[0004] The purpose of the present utility model is to provide an alloy hole opener that is easy to install, so as to solve the problem in the prior art proposed in the above background technology that when replacing the hole opener, multiple bolts need to be disassembled in sequence, which is time-consuming and labor-intensive, reduces the replacement efficiency of the hole opener, and requires the use of tools, which brings great inconvenience to the replacement of the hole opener.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: an alloy hole saw that is easy to install, comprising an electric drill head and a hole saw body, the hole saw body being fixedly installed below the electric drill head, an adjustment sleeve being threadedly connected to the electric drill head, and a limit assembly being provided below the adjustment sleeve;

[0006] The limit assembly includes a mounting seat, a plug rod is movably connected to the side of the mounting seat, the plug rod is annularly arranged on the mounting seat, a limit rod is fixedly installed adjacent to the inner end of the plug rod, a limit block is fixedly installed adjacent to the inner side of the limit rod, a return spring is movably sleeved on the plug rod, and the return spring is arranged on the inner side of the mounting seat;

[0007] A drill rod is provided inside the hole opener body, and a connecting shaft is provided above the drill rod. A limiting groove 2 is provided in a ring shape on the outside of the connecting shaft, and a limiting groove 1 is provided in a ring shape on the lower end of the electric drill head. The limiting groove 1 is provided outside the limiting groove 2, and the inner and outer positions of the limiting groove 1 and the limiting groove 2 correspond to each other, and the limiting block is movably inserted into the limiting groove 1 and the limiting groove 2.

[0008] Preferably, the centers of the electric drill head, the connecting shaft and the drill rod are collinear, and a hole groove for connecting the connecting shaft is provided at the lower end of the electric drill head.

[0009] Preferably, the upper end surface of the limiting rod is provided with a guiding inclined surface, and the guiding inclined surface is provided on the outer side of the limiting rod.

[0010] Preferably, the first limiting groove and the second limiting groove are both equal to the width and length of the limiting block.

[0011] Preferably, the limiting rod is annularly arranged below the adjusting sleeve, and the limiting rod and the adjusting sleeve are in movable contact.

[0012] Preferably, the adjustment sleeve is movably connected to the mounting seat, and the adjustment sleeve and the mounting seat are both collinear with the center of the electric drill head.

[0013] Preferably, a boss is provided in an annular shape on the outer side of the hole groove and is engaged with the inside of the second limiting groove.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. This easy-to-install alloy hole opener is provided with a limit assembly. After the hole opener is inserted into the electric drill head, it is only necessary to rotate the adjusting sleeve so that the adjacent connecting rods move from outside to inside at the same time, thereby driving the limit rod to move from outside to inside. The movement of the limit rod can drive the limit block provided on the inner side thereof to move, so that the limit block is sequentially snapped into the limit groove 1 and the limit groove 2. Through the snap connection of the limit block, the hole opener and the electric drill head can be fixed from multiple directions without the assistance of bolts and special tools. The installation operation of the hole opener is easy, and when the hole opener is replaced, no tool assistance is required, and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of a half-section structure of the present utility model;

[0018] Figure 3 This is a schematic diagram of the state of the hole opener of the utility model when inserted;

[0019] Figure 4 This is a schematic diagram of the hole opener of the present invention after insertion;

[0020] Figure 5 For the utility model Figure 2 Enlarged view of point M.

[0021] In the figure: 1. Electric drill head; 2. Adjustment sleeve; 3. Limit assembly; 31. Mounting seat; 32. Connecting rod; 33. Limit rod; 34. Limit block; 35. Limit slot 1; 36. Return spring; 37. Limit slot 2; 38. Guide slope; 4. Hole opener body; 5. Drill bit; 51. Connecting shaft. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Example: See Figure 1-5 The present invention provides a technical solution: an easy-to-install alloy hole saw. This solution primarily addresses the prior art problem that, when replacing the hole saw, multiple bolts must be removed sequentially, which is time-consuming and labor-intensive, reducing the efficiency of hole saw replacement and requiring the use of tools, causing significant inconvenience during hole saw replacement. The specific solution is as follows: the hole saw comprises an electric drill head 1 and a hole saw body 4 (the electric drill head 1 is shown only partially in the solution to facilitate illustration of the connection structure). The hole saw body 4 is fixedly mounted below the electric drill head 1. An adjustment sleeve 2 is threadedly connected to the electric drill head 1, and a limit assembly 3 is provided below the adjustment sleeve 2. Rotating the adjustment sleeve 2 allows the adjustment sleeve 2 to move upward or downward along the axis of the electric drill head 1.

[0024] See also Figure 2-5 , wherein the limiting assembly 3 includes a mounting seat 31 , the adjusting sleeve 2 is movably plugged into the mounting seat 31 , and the adjusting sleeve 2 and the mounting seat 31 are both collinear with the center of the electric drill head 1 .

[0025] Specifically, a plug-in rod 32 is movably connected to the side of the mounting base 31. The plug-in rod 32 is annularly mounted on the mounting base 31, with the centerlines of the plug-in rod 32 and the mounting base 31 perpendicular to each other. A limit rod 33 is fixedly mounted on the inner end of an adjacent plug-in rod 32. The limit rod 33 is annularly mounted below the adjustment sleeve 2 and is in movable contact with the adjustment sleeve 2. When the adjustment sleeve 2 is rotated, moving the adjustment sleeve 2 from top to bottom along the axis of the electric drill head 1, it pushes the adjacent plug-in rod 32 to move simultaneously from outside to inside, thereby driving the limit rod 33 to move from outside to inside.

[0026] Furthermore, a guide slope 38 is provided on the upper end surface of the limit rod 33, and the guide slope 38 is provided on the outer side of the limit rod 33. The provision of the guide slope 38 allows the adjacent connecting rods 32 to move from outside to inside simultaneously during the downward movement of the adjustment sleeve 2, thereby driving the limit rod 33 to move from outside to inside.

[0027] Furthermore, a limit block 34 is fixedly installed on the inner side of the adjacent limit rod 33, and a return spring 36 is movably sleeved on the plug-in rod 32, and the return spring 36 is arranged on the inner side of the mounting seat 31; when the limit rod 33 moves from the outside to the inside, it can drive the limit block 34 to be clamped on the electric drill end 1.

[0028] In this embodiment, a drill rod 5 is disposed within the hole opener body 4. The hole opener body 4 is made of an alloy, and a connecting shaft 51 is disposed above the drill rod 5. The centers of the electric drill head 1, connecting shaft 51, and drill rod 5 are collinear. The outer diameters of the hole and connecting shaft 51 are equal. A second limiting groove 37 is formed in an annular shape on the outside of the connecting shaft 51. A first limiting groove 35 is formed in an annular shape at the lower end of the electric drill head 1. The first limiting groove 35 is disposed outside the second limiting groove 37, and the inner and outer positions of the first limiting groove 35 and the second limiting groove 37 correspond. A limiting block 34 is movably engaged within the first limiting groove 35 and the inner and outer positions of the second limiting groove 37. A hole is formed at the lower end of the electric drill head 1 for connecting the connecting shaft 51. A boss is formed in an annular shape on the outer side of the hole, which engages with the inner limit groove 37. The boss's position corresponds to the inner and outer positions of the limiting block 34, and the boss can limit the relative rotation of the electric drill head 1 and the hole opener. The first and second limiting grooves 35, 37 are both equal in width and length to the limiting blocks 34. When the adjustment sleeve 2 rotates, the adjacent connecting rods 32 simultaneously move from outside to inside, thereby driving the limiting rods 33 to move from outside to inside. The movement of the limiting rods 33 drives the limiting blocks 34 disposed inside them, causing the limiting blocks 34 to sequentially engage the first and second limiting grooves 35, 37. Through the engagement of the limiting blocks 34, the hole saw and the electric drill bit 1 can be secured in multiple positions without the need for bolts or specialized tools, making installation of the hole saw easy.

[0029] Working principle: This alloy hole opener is easy to install. When replacing the hole opener, the reverse rotation adjusting sleeve 2 is rotated to make the adjusting sleeve 2 move from bottom to top, and the limit rod 33 is disengaged from the restriction. Through the elastic reset action of the reset spring 36, the limit rod 33 drives the limit block 34 away from the electric drill end 1. In this state, it is easy to insert the hole opener. After insertion, the adjusting sleeve 2 is rotated forwardly to make the adjacent connecting rods 32 move from outside to inside at the same time, thereby driving the limit rod 33 to move from outside to inside. The movement of the limit rod 33 can drive the limit block 34 arranged on its inner side to move, so that the limit block 34 is sequentially snapped into the limit groove 1 35 and the limit groove 2 37. Through the snap connection of the limit block 34, the hole opener and the electric drill end 1 can be fixed from multiple directions without the assistance of bolts and special tools, and the installation operation of the hole opener is easy.

[0030] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An alloy hole opener that is easy to install, comprising an electric drill head (1) and a hole opener body (4), wherein the hole opener body (4) is fixedly installed below the electric drill head (1), and is characterized in that: An adjusting sleeve (2) is threadedly connected to the electric drill head (1), and a limiting component (3) is provided below the adjusting sleeve (2); The limiting assembly (3) includes a mounting seat (31), a plug rod (32) is movably connected to the side of the mounting seat (31), the plug rod (32) is annularly arranged on the mounting seat (31), a limiting rod (33) is fixedly installed adjacent to the inner end of the plug rod (32), a limiting block (34) is fixedly installed adjacent to the inner side of the limiting rod (33), a return spring (36) is movably sleeved on the plug rod (32), and the return spring (36) is arranged on the inner side of the mounting seat (31); A drill rod (5) is provided inside the hole opener body (4), and a plug-in shaft (51) is provided above the drill rod (5). A second limiting groove (37) is provided in an annular shape on the outside of the plug-in shaft (51). A first limiting groove (35) is provided in an annular shape on the lower end of the electric drill head (1). The first limiting groove (35) is provided outside the second limiting groove (37), and the inner and outer positions of the first limiting groove (35) and the second limiting groove (37) correspond to each other. The limiting block (34) is movably plugged into the first limiting groove (35) and the second limiting groove (37).

2. The easy-to-install alloy hole opener according to claim 1, characterized in that: The centers of the electric drill head (1), the plug-in shaft (51) and the drill rod (5) are collinear, and a hole groove for plugging the plug-in shaft (51) is provided at the lower end of the electric drill head (1).

3. The easy-to-install alloy hole opener according to claim 1, characterized in that: The upper end surface of the limiting rod (33) is provided with a guiding inclined surface (38), and the guiding inclined surface (38) is provided on the outer side of the limiting rod (33).

4. The easy-to-install alloy hole opener according to claim 1, characterized in that: The first limiting groove (35) and the second limiting groove (37) are both equal in width and length to the limiting block (34).

5. The easy-to-install alloy hole opener according to claim 1, characterized in that: The limiting rod (33) is annularly arranged below the adjustment sleeve (2), and the limiting rod (33) and the adjustment sleeve (2) are in movable contact.

6. The easy-to-install alloy hole opener according to claim 1, characterized in that: The adjusting sleeve (2) is movably plugged into the mounting seat (31), and the adjusting sleeve (2) and the mounting seat (31) are both collinear with the center of the electric drill head (1).

7. The easy-to-install alloy hole opener according to claim 2, characterized in that: The outer side of the hole groove is provided with a boss in the shape of a ring which is clamped in the interior of the second limiting groove (37).

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