A connecting assembly for an output shaft of an impact drill and a drill bit

Abstract

The utility model relates to the technical field of drilling machine, concretely is a kind of the connecting assembly of the output shaft of percussion drill and drill bit, including drilling machine body, the output end transmission of drilling machine body is connected with percussion knob, and the side surface of percussion knob is equipped with several groups of insertion hole, the inside of several groups insertion hole is all movably inserted and is provided with insertion rod, and the end of several groups insertion rod is all installed with the end of output shaft, the position of the bottom end of drilling machine body is installed with quick coupling on one side. Through percussion knob, insertion hole, output shaft, insertion rod, threaded cap and drill bit body and other components setting can effectively solve the output end of existing drilling machine only through single threaded column and drilling machine are connected and set, so that in actual work, drill bit can be installed with the end of output end, so that the threaded column of the end of output end is loose, so that drill bit and output end are prone to shaking when high-speed rotation, so as to affect the normal use effect of drilling machine.

Description

Technical Field

[0001] This utility model relates to the field of drilling technology, specifically to a connection assembly between the output shaft and the drill bit of an impact drill. Background Technology

[0002] A drilling rig is a handheld power tool. An impact drill primarily uses rotary cutting, but also incorporates an impact mechanism that drives the drill bit. While the drill bit rotates, there is also a reciprocating hammering motion perpendicular to the drill bit's rotation plane. It is used for drilling holes in materials such as concrete, brick, ceramic tiles, and marble.

[0003] The existing drilling rig's output end is connected to the rig via a single threaded post. In actual operation, the drill bit is mounted on one end of the output end, causing the threaded post to loosen. This makes the drill bit and output end prone to shaking during high-speed rotation, thus affecting the normal operation of the drilling rig. Therefore, corresponding improvements are needed to address these issues. Utility Model Content

[0004] The purpose of this invention is to provide a connection assembly between the output shaft and the drill bit of an impact drill, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a connection assembly between the output shaft and the drill bit of an impact drill, comprising a drill body, an impact knob being drivenly connected to the output end of the drill body, and a plurality of sets of insertion holes being provided on one side surface of the impact knob, wherein insertion rods are movably inserted into the interior of each of the plurality of sets of insertion holes, and one end of each of the plurality of sets of insertion rods is installed with one end of the output shaft, a quick connector being installed at one side of the bottom end of the drill body, and a gear adjustment knob being installed on one side of the drill body.

[0006] Preferably, the plurality of sets of insertion holes are arranged symmetrically with the center point of the impact knob as the center point, and the inner wall of one end of each set of insertion holes is tapered.

[0007] Preferably, the plurality of plug rods are arranged in a centrally symmetrical manner with the center point of the output shaft as the center point, and the ends of the plurality of plug rods are all tapered.

[0008] Preferably, the output shaft is cylindrical, and the outer surface of the end of the output shaft is threaded.

[0009] Preferably, the quick connector is hollow inside, and buckles are installed on both sides of the bottom of the quick connector.

[0010] Preferably, the inner side of the gear adjustment knob is rotatably connected to one side of the drilling rig body, and the gear adjustment knob has multiple gear settings.

[0011] Preferably, a hand-held part is installed at the other end of the drilling rig body, and a control switch is installed on one side of the hand-held part.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] By incorporating components such as impact knobs, insertion holes, output shafts, and insertion rods, the problem of existing drilling rigs where the output end is connected to the rig only via a single threaded post is effectively solved. This causes the drill bit to be mounted on one end of the output end during actual operation, resulting in the threaded post at that end becoming loose. Consequently, the drill bit and output end are prone to shaking during high-speed rotation, thus affecting the normal operation of the drilling rig. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the main body of this utility model.

[0015] Figure 2 This is a schematic diagram of the main structure of the present invention.

[0016] Figure 3 This is a top view of the main body of this utility model.

[0017] In the diagram: 1. Drilling rig body; 2. Impact knob; 21. Plug hole; 3. Output shaft; 31. Plug rod; 4. Quick connector; 5. Gear adjustment knob. Detailed Implementation

[0018] 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.

[0019] according to Figures 1-3As shown, the system includes a drilling rig body 1. An impact knob 2 is connected to the output end of the drilling rig body 1. Several sets of insertion holes 21 are formed on one side surface of the impact knob 2. These insertion holes 21 are centrally symmetrical about the center point of the impact knob 2, and the inner walls of one end of each insertion hole 21 are tapered. Insertion rods 31 are movably inserted into the interior of each insertion hole 21. One end of each insertion rod 31 is connected to one end of an output shaft 3. These insertion rods 31 are centrally symmetrical about the center point of the output shaft 3, and the ends of each insertion rod 31 are tapered. The outer diameter of one end of 31 is adapted to the inner diameter of several sets of insertion holes 21. The output shaft 3 is cylindrical and the outer surface of the end of the output shaft 3 is threaded. A quick connector 4 is installed on one side of the bottom of the drill body 1, and a gear adjustment knob 5 is installed on one side of the drill body 1. The quick connector 4 is hollow inside, and buckles are installed on both sides of the bottom of the quick connector 4. The inner side of the gear adjustment knob 5 is rotatably connected to one side of the drill body 1, and the gear adjustment knob 5 has multiple gear settings. A handheld part is installed at the other end of the drill body 1, and a control switch is installed on one side of the handheld part.

[0020] In use, the user can insert several sets of connector rods 31, which are provided at one end of the output shaft 3, into the corresponding connector holes 21. Since the inner walls of the connector holes 21 are tapered on one side, and the connector rods 31 are also tapered, and the outer diameter of one end of each connector rod 31 matches the inner diameter of the connector holes 21, the connector rods 31 can be locked and engaged within the corresponding connector holes 21. Because both the connector holes 21 and the connector rods 31 are provided in multiple sets, the friction between the inner wall of the connector holes 21 and the outer surface of the connector rods 31 is maximized, thereby ensuring the output shaft 3... It can be firmly installed on one end surface of the impact knob 2. The impact knob 2 can realize the switching between impact and non-impact. When in use, rotating the gear adjustment knob 5 can realize the two-speed switching. The quick connector 4 can be installed with the clips on both sides of the bottom end to install the dust suction connector or the water pipe connector. One end of the dust suction connector is connected to the dust suction pump, which can be used to absorb the dust generated when the drill body 1 is working. One end of the water pipe connector is connected to the water tank, which can be used to clean the inside of the hole drilled by the drill body 1. The control switch installed on one side of the hand can control the opening and closing status of the drill body 1.

[0021] 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 connection assembly between the output shaft and the drill bit of an impact drill, comprising a drill body (1), characterized in that: The output end of the drilling rig body (1) is connected to an impact knob (2), and a number of sets of insertion holes (21) are opened on one side surface of the impact knob (2). Insertion rods (31) are movably inserted into the interior of each set of insertion holes (21), and one end of each set of insertion rods (31) is installed with one end of the output shaft (3). A quick connector (4) is installed on one side of the bottom end of the drilling rig body (1), and a gear adjustment knob (5) is installed on one side of the drilling rig body (1).

2. The connection assembly between the output shaft and the drill bit of an impact drill according to claim 1, characterized in that: The several sets of plug holes (21) are arranged symmetrically with the center point of the impact knob (2) as the center point, and the inner wall of one end of the several sets of plug holes (21) is tapered.

3. The connection assembly between the output shaft and the drill bit of an impact drill according to claim 1, characterized in that: Several sets of plug rods (31) are arranged in a centrally symmetrical manner with the center point of the output shaft (3) as the center point, and the ends of several sets of plug rods (31) are all tapered.

4. The connection assembly between the output shaft and the drill bit of an impact drill according to claim 1, characterized in that: The output shaft (3) is cylindrical, and the outer surface of the end of the output shaft (3) is threaded.

5. The connection assembly between the output shaft and the drill bit of an impact drill according to claim 1, characterized in that: The quick connector (4) is hollow inside, and buckles are installed on both sides of the bottom of the quick connector (4).

6. The connection assembly between the output shaft and the drill bit of an impact drill according to claim 1, characterized in that: The inner side of the gear adjustment knob (5) is rotatably connected to one side of the drilling rig body (1), and the gear adjustment knob (5) has two gear settings.

7. The connection assembly between the output shaft and the drill bit of an impact drill according to claim 1, characterized in that: The other end of the drilling rig body (1) is equipped with a hand-held part, and a control switch is installed on one side of the hand-held part.

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