Pistol drill with drill bit anti-falling structure

Abstract

The utility model discloses a pistol drill with a drill anti-falling structure, which comprises a pistol drill main body, and the pistol drill main body drives a rotating shaft to enable a rotating shell and a thread head to be fastened more tightly. Before the pistol drill with the drill bit anti-falling structure is used, a fixing head is pulled out of a positioning hole, a connecting rod is rotated, then a connector on one side of a rotating shell is rotated to a proper position, and then the fixing head is inserted into the connector, so that the position of the rotating shell is fixed, and a positive and negative adjusting switch is adjusted to enable a rotating shaft to rotate in the required direction; compared with a traditional drill bit installation mode, the mechanism is convenient to install, good in fastening performance and high in speed, after installation is completed, the fixing head is taken down from the connector and plugged back into the positioning hole, the cylindrical magnet attracts the fixing head, and the fixing head can be connected with the rotating shell and the threaded head. The fixing head is prevented from falling off.

Description

Technical Field

[0001] The utility model relates to the technical field of pistol drills, in particular to a pistol drill provided with a drill bit anti-falling structure. Background Art

[0002] A hand drill is a drilling tool powered by AC power or DC battery. It is a type of handheld power tool. The hand drill is the best-selling product in the power tool industry. It is widely used in construction, decoration, furniture and other industries to make holes in objects or pierce objects. In some industries, it is also called an electric hammer.

[0003] When using a pistol drill, first put the drill bit into the hole of the chuck, hold the shaft with one hand, and then use the other hand to twist the rotating shell so that the rotating shell squeezes the chuck and tightens the drill bit. However, the power of twisting the rotating shell by hand is limited, and since the force points of the rotating shell are limited, it is very inconvenient to twist, resulting in the rotating shell not being tightened. Utility Model Content

[0004] The utility model aims to provide a pistol drill with a drill bit anti-falling structure to solve the problem that the drill bit is easy to fall off during use proposed in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions, including: a pistol drill body, a forward and reverse adjustment switch is slidably connected to the upper end surface of the pistol drill body, a handle is fixedly connected to the lower end surface of the pistol drill body, a start button is provided on one side surface of the handle, a rotating shaft is rotatably connected to one side surface of the pistol drill body, a threaded head is fixedly connected to one end of the rotating shaft, a base is fixedly connected to one side surface of the threaded head, a slide rail is fixedly connected to the surface of the slide rail, a chuck is slidably connected to the surface of the chuck, a rotating shell is provided on the surface of the rotating shell, a fastening mechanism is provided on the surface of the rotating shell, the fastening mechanism positions the rotating shell through a fixed head and a connecting rod, and the pistol drill body drives the rotating shaft to make the rotating shell and the threaded head more fastened.

[0006] Preferably, the fastening mechanism comprises: a connecting head is fixedly connected to the surface of the rotating shell, a fixing head is provided on the surface of the connecting head, a connecting rod is fixedly connected to one side surface of the fixing head, a rotating ball is fixedly connected to one end of the connecting rod, a positioning hole is provided on one side surface of the pistol drill body, and a cylindrical magnet is fixedly connected to the inner wall surface of the positioning hole.

[0007] By adopting the above technical solution, the fastening mechanism prevents the loose connection between the rotating housing and the threaded head.

[0008] Preferably, a locking mechanism is provided on the surface of the rotating shaft, wherein the locking mechanism includes: a gear ring 1 is fixedly connected to one side surface of the rotating shell, a positioning ring is slidably connected to the surface of the rotating shaft, a gear ring 2 is fixedly connected to one side surface of the positioning ring, and a positioning bolt is threadedly connected to the upper end surface of the positioning ring.

[0009] By adopting the above technical solution, the engaging mechanism further enhances the stability of the connection between the rotating housing and the threaded head.

[0010] Preferably, the outer surface of the rotating shaft is frosted, the inner wall surface of the rotating shell is provided with threads, the surface of the threaded head is threadedly connected to the rotating shell, the 3 chucks are tapered as a whole, and a cylindrical hole is provided at the center of the whole formed by the chucks, a spring is provided between the 3 chucks, and a strip-shaped depression is provided on one side surface of the pistol drill body.

[0011] By adopting the above technical solution, the outer surface of the rotating shaft is frosted to ensure the tightness of the connection between the positioning bolt and the rotating shaft, the chuck facilitates the clamping of the drill bit, and the cylindrical hole is not easy to cause the drill bit to get stuck.

[0012] Preferably, a cylindrical depression is provided at the center of the surface of the connector, and the inner diameter of the cylindrical depression of the connector is the same as the diameter of the fixed head, and the outer surface of the fixed head is slidably connected to the inner wall surface of the connector depression.

[0013] The above technical solution is adopted to provide a structural basis for the fastening mechanism.

[0014] Preferably, the rotating ball is arranged in a strip-shaped recess on one side surface of the pistol drill body, and the surface of the rotating ball is slidably connected to the strip-shaped recess of the pistol drill body, the diameter of the connecting rod is the same as the height of the strip-shaped recess of the pistol drill body, the inner diameter of the positioning hole is the same as the diameter of the fixed head, and the inner wall surface of the positioning hole is slidably connected to the outer surface of the fixed head.

[0015] The above technical solution facilitates the rotation of the connecting rod, and the rotating ball prevents the connecting rod from being separated from the strip-shaped recess on one side of the pistol drill body when rotating.

[0016] Preferably, one end of the positioning bolt is penetrated through the upper end of the positioning ring, and the lower end surface of the positioning bolt is frictionally connected to the surface of the rotating shaft, and the overall shape of the gear ring 1 and the gear ring 2 is the same.

[0017] The above technical solution is adopted to provide a structural basis for the locking mechanism.

[0018] Compared with the prior art, the utility model has the following beneficial effects: the pistol drill with a drill bit anti-falling structure:

[0019] 1. The fastening mechanism prevents the loose connection between the rotating housing and the threaded head. The drill bit is easy to fall off during the use of the pistol drill. Before use, pull the fixed head out of the positioning hole, rotate the connecting rod, and then rotate the connecting head to the appropriate position at the same time, then insert the fixed head into the connecting head, adjust the forward and reverse adjustment switch, press the start button, and when the shaft rotates, the rotating housing and the threaded head can be connected together. Compared with the traditional drill bit installation method, this mechanism is easy to install, has better fastening, and has a higher speed.

[0020] 2. The locking mechanism further enhances the stability of the connection between the rotating housing and the threaded head. After the drill bit is installed, align the teeth of the gear ring 2 with the teeth of the gear ring 1, and then tighten the positioning bolts on the upper end of the positioning ring. The teeth of the gear ring 2 are engaged with the teeth of the gear ring 1, thereby further preventing the rotating housing from loosening. This mechanism further enhances the stability of the connection between the rotating housing and the threaded head, and has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the pistol drill body and the forward and reverse adjustment switch of the utility model;

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of the connection between the rotating shaft and the threaded head of the utility model;

[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of the pistol drill body and the rotating ball connected to the utility model;

[0024] Figure 4 This is a schematic diagram of the three-dimensional structure of the connection head and the fixed head of the utility model;

[0025] Figure 5 For this utility model Figure 3 A is an enlarged structural diagram of FIG.

[0026] In the figure: 1. pistol drill body; 2. forward and reverse adjustment switch; 3. handle; 4. start button; 5. rotating shaft; 6. threaded head; 7. base; 8. slide rail; 9. chuck; 10. rotating shell; 11. connecting head; 12. fixed head; 13. connecting rod; 14. rotating ball; 15. positioning hole; 16. cylindrical magnet; 17. gear ring 1; 18. positioning ring; 19. gear ring 2; 20. positioning bolt. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-5The utility model provides a technical solution: a pistol drill with a drill bit anti-falling structure, comprising: a pistol drill body 1, a forward and reverse adjustment switch 2 is slidably connected to the upper end surface of the pistol drill body 1, a handle 3 is fixedly connected to the lower end surface of the pistol drill body 1, a start button 4 is provided on one side surface of the handle 3, a rotating shaft 5 is rotatably connected to one side surface of the pistol drill body 1, a threaded head 6 is fixedly connected to one end of the rotating shaft 5, a base 7 is fixedly connected to one side surface of the threaded head 6, a slide rail 8 is fixedly connected to one side surface of the base 7, a chuck 9 is slidably connected to the surface of the slide rail 8, a rotating shell 10 is provided on the surface of the chuck 9, a fastening mechanism is provided on the surface of the rotating shell 10, and the fastening mechanism positions the rotating shell 10 through a fixed head 12 and a connecting rod 13, the pistol The drill body 1 drives the rotating shaft 5 to make the rotating shell 10 and the threaded head 6 more tightly connected, wherein the tightening mechanism includes: a connecting head 11 is fixedly connected to the surface of the rotating shell 10, a fixed head 12 is provided on the surface of the connecting head 11, a connecting rod 13 is fixedly connected to one side surface of the fixed head 12, a rotating ball 14 is fixedly connected to one end of the connecting rod 13, a positioning hole 15 is provided on one side surface of the pistol drill body 1, a cylindrical magnet 16 is fixedly connected to the inner wall surface of the positioning hole 15, the outer surface of the rotating shaft 5 is frosted, the inner wall surface of the rotating shell 10 is provided with threads, the surface of the threaded head 6 is threadedly connected to the rotating shell 10, the three chucks 9 are tapered as a whole, and a cylindrical hole is provided at the center of the whole formed by the chucks 9, and a spring is provided between the three chucks 9. A strip-shaped depression is provided on one side surface of the pistol drill body 1, a cylindrical depression is provided at the center of the surface of the connecting head 11, and the inner diameter of the cylindrical depression of the connecting head 11 is the same as the diameter of the fixed head 12, the outer surface of the fixed head 12 is slidably connected to the inner wall surface of the depression of the connecting head 11, the rotating ball 14 is arranged in the strip-shaped depression on one side surface of the pistol drill body 1, and the surface of the rotating ball 14 is slidably connected to the strip-shaped depression of the pistol drill body 1, the diameter of the connecting rod 13 is the same as the height of the strip-shaped depression of the pistol drill body 1, the inner diameter of the positioning hole 15 is the same as the diameter of the fixed head 12, and the inner wall surface of the positioning hole 15 is slidably connected to the outer surface of the fixed head 12. When using the pistol drill, first put the drill bit into the hole of the chuck 9 and hold it with one hand. The drill bit is easily removed from the drill body 1 by twisting the rotating shaft 5 with one hand and then twisting the rotating shell 10 with the other hand so that the extruding chuck 9 of the rotating shell 10 moves on the surface of the slide rail 8 on the base 7, thereby tightening the drill bit. However, the power of twisting the rotating shell 10 by hand is limited, and since the force points of the rotating shell 10 are limited, it is very inconvenient to twist, resulting in that the rotating shell 10 cannot be tightened. During the use of the pistol drill, the drill bit is easy to fall off. Before use, the fixing head 12 is pulled out of the positioning hole 15, and the connecting rod 13 is rotated. The rotating ball 14 prevents the connecting rod 13 from being separated from the strip-shaped depression on one side of the pistol drill body 1. Then, the connecting head 11 on one side of the rotating shell 10 is rotated to a suitable position at the same time, and then the fixing head 12 is inserted into the connecting head 11, thereby fixing the position of the rotating shell 10.Adjust the forward and reverse adjustment switch 2 to make the shaft 5 rotate in the desired direction, hold the handle 3 and press the start button 4. When the shaft 5 rotates, the rotating housing 10 and the threaded head 6 can be connected together. After completion, remove the fixed head 12 from the connecting head 11 and insert it back into the positioning hole 15. The cylindrical magnet 16 absorbs the fixed head 12 to prevent it from falling.

[0029] A locking mechanism is provided on the surface of the rotating shaft 5, wherein the locking mechanism includes: a gear ring 17 is fixedly connected to one side surface of the rotating shell 10, a positioning ring 18 is slidably connected to the surface of the rotating shaft 5, a gear ring 2 19 is fixedly connected to one side surface of the positioning ring 18, a positioning bolt 20 is threadedly connected to the upper end surface of the positioning ring 18, one end of the positioning bolt 20 is penetrated and arranged at the upper end of the positioning ring 18, and the lower end surface of the positioning bolt 20 is frictionally connected to the surface of the rotating shaft 5, and the overall shape of the gear ring 17 and the gear ring 2 19 are the same, the positioning ring 18 is slid to one side of the gear ring 17, and then the meshing teeth of the gear ring 2 19 are aligned with the meshing teeth of the gear ring 17, and then the positioning bolt 20 at the upper end of the positioning ring 18 is tightened, so as to fix the position of the positioning ring 18, and the meshing teeth of the gear ring 2 19 are engaged with the meshing teeth of the gear ring 17, so as to further prevent the rotating shell 10 from loosening.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pistol drill with a drill bit anti-drop structure, comprising: A pistol drill body (1) is provided, wherein the upper end surface of the pistol drill body (1) is slidably connected with a forward and reverse adjustment switch (2), the lower end surface of the pistol drill body (1) is fixedly connected with a handle (3), one side surface of the handle (3) is provided with a start button (4), one side surface of the pistol drill body (1) is rotatably connected with a rotating shaft (5), one end of the rotating shaft (5) is fixedly connected with a threaded head (6), one side of the threaded head (6) is fixedly connected with a base (7), one side surface of the base (7) is fixedly connected with a slide rail (8), the surface of the slide rail (8) is slidably connected with a chuck (9), the surface of the chuck (9) is provided with a rotating shell (10), and the characteristic is that a fastening mechanism is provided on the surface of the rotating shell (10), the fastening mechanism positions the rotating shell (10) through a fixed head (12) and a connecting rod (13), and the pistol drill body (1) drives the rotating shaft (5) to make the rotating shell (10) and the threaded head (6) more fastened.

2. A pistol drill with a drill bit anti-drop structure according to claim 1, characterized in that: The fastening mechanism comprises: a connecting head (11) is fixedly connected to the surface of the rotating shell (10), a fixing head (12) is provided on the surface of the connecting head (11), a connecting rod (13) is fixedly connected to one side surface of the fixing head (12), a rotating ball (14) is fixedly connected to one end of the connecting rod (13), a positioning hole (15) is provided on one side surface of the pistol drill body (1), and a cylindrical magnet (16) is fixedly connected to the inner wall surface of the positioning hole (15).

3. The pistol drill with a drill bit anti-drop structure according to claim 1, characterized in that: A locking mechanism is provided on the surface of the rotating shaft (5), wherein the locking mechanism comprises: a first gear ring (17) is fixedly connected to a surface of one side of the rotating housing (10), a positioning ring (18) is slidably connected to the surface of the rotating shaft (5), a second gear ring (19) is fixedly connected to a surface of one side of the positioning ring (18), and a positioning bolt (20) is threadedly connected to the upper end surface of the positioning ring (18).

4. The pistol drill with a drill bit anti-drop structure according to claim 1, characterized in that: The outer surface of the rotating shaft (5) is frosted, the inner wall surface of the rotating shell (10) is provided with threads, the surface of the threaded head (6) is threadedly connected to the rotating shell (10), the chuck (9) is tapered as a whole, and a cylindrical hole is provided at the center of the whole formed by the chuck (9), a spring is provided between the three chucks (9), and a strip-shaped depression is provided on one side surface of the pistol drill body (1).

5. The pistol drill with a drill bit anti-drop structure according to claim 2, characterized in that: A cylindrical recess is provided at the center of the surface of the connecting head (11), and the inner diameter of the cylindrical recess of the connecting head (11) is the same as the diameter of the fixed head (12), and the outer surface of the fixed head (12) is slidably connected to the inner wall surface of the recess of the connecting head (11).

6. The pistol drill with a drill bit anti-drop structure according to claim 2, characterized in that: The rotating ball (14) is arranged in a strip-shaped depression on one side surface of the pistol drill body (1), and the surface of the rotating ball (14) is slidably connected to the strip-shaped depression of the pistol drill body (1), the diameter of the connecting rod (13) is the same as the height of the strip-shaped depression of the pistol drill body (1), the inner diameter of the positioning hole (15) is the same as the diameter of the fixed head (12), and the inner wall surface of the positioning hole (15) is slidably connected to the outer surface of the fixed head (12).

7. The pistol drill with a drill bit anti-drop structure according to claim 3, characterized in that: One end of the positioning bolt (20) is inserted through the upper end of the positioning ring (18), and the lower end surface of the positioning bolt (20) is frictionally connected to the surface of the rotating shaft (5). The overall shape of the gear ring 1 (17) and the gear ring 2 (19) is the same.

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