Handheld electric screwdriver with positioning structure

Abstract

The handheld electric screwdriver with the positioning structure comprises an electric screwdriver body, the side wall of the electric screwdriver body is fixedly connected with an installation cylinder, the side wall of the installation cylinder is provided with a fixing mechanism used for fixing a screw, the fixing mechanism comprises an installation disc arranged on the side wall of the installation cylinder, the upper end of the installation disc is provided with a plurality of through grooves, and the through grooves are communicated with the installation disc. A fixing rod is fixedly connected to the lower end of the mounting disc, a sliding part is connected to the side wall of the fixing rod through a reset spring, a mounting plate is connected to the side wall of the sliding part through a connecting mechanism, and a mounting frame is fixedly connected to the mounting plate. According to the electric screwdriver, the fixing mechanism is arranged, a screw can be placed among the claw tips of the three limiting claws to be abutted against, the screw is always positioned in front of the electric screwdriver body in the screwing-in process, loosening of the screw is avoided, hands and workpieces are prevented from being scratched, and therefore the practicability of the electric screwdriver is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of handheld electric screwdrivers, in particular to a handheld electric screwdriver with a positioning structure. Background Art

[0002] A hand-held electric screwdriver is a hand-held electric tool, mainly used to tighten and loosen screws and nuts. It is equipped with a mechanism to adjust and limit torque, so it is suitable for assembly lines. The electric screwdriver consists of three major parts: electronics, motors, and mechanics.

[0003] Most of the handheld electric screwdrivers in the prior art are cylindrical, and the mechanisms for adjusting and limiting torque and the driving mechanism are all installed in the casing, and there is nothing extra outside the casing. When screwing in a screw with this handheld electric screwdriver, it is generally necessary to manually place the screw nut into the magnetic drill bit so that the drill bit can align the screw with the screw into the screw hole. At that time, some screws had weak magnetism or were even plastic screws, so they needed to be manually supported. This electric screwdriver lacking a positioning structure is very dangerous when used. Once the screw is crooked, the drill bit will scratch your fingers and may also wipe the parts. Therefore, it is necessary to design a handheld electric screwdriver with a positioning structure to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art, and a hand-held electric screwdriver with a positioning structure is proposed. By setting a fixing mechanism, a screw can be placed between the tips of three limiting claws and tightened. The screw is always positioned in front of the electric screwdriver body during the screwing process, thereby avoiding loosening of the screw and scratching of hands and workpieces, thereby improving the practicability of the device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A handheld electric screwdriver with a positioning structure comprises an electric screwdriver body, a side wall of the electric screwdriver body is fixedly connected to a mounting cylinder, the side wall of the mounting cylinder is provided with a fixing mechanism for fixing screws, the fixing mechanism comprises a mounting plate arranged on the side wall of the mounting cylinder, a plurality of through grooves are opened at the upper end of the mounting plate, a fixing rod is fixedly connected to the lower end of the mounting plate, the side wall of the fixing rod is connected to a sliding member via a reset spring, the side wall of the sliding member is connected to a mounting plate via a connecting mechanism, the mounting plate is fixedly connected to a mounting frame, and a limiting claw is provided in the mounting frame which is connected to a torsion spring via a rotating shaft.

[0007] Preferably, the connecting mechanism includes two connecting blocks arranged on the two side walls of the sliding member, two screws are commonly provided on the two connecting blocks, two nuts are provided on the screws, the connecting blocks are fixedly connected to the mounting plate, and the side walls of the mounting plate are provided with a limiting mechanism for limiting the position of the limiting claw.

[0008] Preferably, the limiting mechanism comprises a limiting pin arranged on a side wall of the mounting plate, and the limiting pin is threadedly connected to the mounting plate.

[0009] Preferably, the side wall of the limiting claw is fixedly connected to a limiting cylinder, and a movable rod is provided in the limiting cylinder.

[0010] Preferably, the movable rod is threadedly connected to the limiting cylinder, and a rotating block is provided on the side wall of the limiting pin.

[0011] Preferably, a stopper is installed at the lower end of the mounting plate via a rotating shaft, one of the side walls of the sliding member is fixedly connected to the limit block, and the side wall of the stopper is provided with a limit groove that can cooperate with the limit block.

[0012] The utility model has the following beneficial effects:

[0013] 1. This device is equipped with a fixing mechanism. The screw can be placed between the tips of the three limit claws and tightened. Hold the electric screwdriver body and move it so that the lower end of the screw enters the screw hole. After opening the electric screwdriver body, the screw can be screwed in. Since the three limit claws will not open during the screwing process, the screw is always positioned in front of the electric screwdriver body to prevent the screw from loosening.

[0014] 2. The device is equipped with a connection mechanism, which can separate the mounting plate and the sliding part by removing the nut and the screw, which is convenient for transportation and reduces the replacement cost;

[0015] 3. The device is provided with a limit mechanism, and one of the sliding parts can be held by one hand so that the movable rod is against the plane near the screw, so that the screw can be screwed into the screw hole in a vertical position to avoid the screw being screwed in at an angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a handheld electric screwdriver with a positioning structure proposed by the utility model;

[0017] Figure 2 for Figure 1 A magnified view of the structure at A;

[0018] Figure 3 The utility model is a side view of a handheld electric screwdriver with a positioning structure.

[0019] In the figure: 1 electric screwdriver body, 2 mounting cylinder, 3 mounting plate, 4 through slot, 5 fixing rod, 6 limiting block, 7 stopper, 8 sliding member, 9 connecting block, 10 mounting plate, 11 mounting frame, 12 limiting claw, 13 limiting cylinder, 14 movable rod, 15 limiting pin, 16 torsion spring, 17 rotating shaft. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-3 A handheld electric screwdriver with a positioning structure comprises an electric screwdriver body 1, a mounting tube 2 is fixedly connected to the side wall of the electric screwdriver body 1, a fixing mechanism for fixing screws is provided on the side wall of the mounting tube 2, the fixing mechanism comprises a mounting plate 3 arranged on the side wall of the mounting tube 2, a plurality of through slots 4 are provided on the upper end of the mounting plate 3, which can reduce the weight of the mounting plate 3 and provide an operator with a better top-down field of vision, a fixing rod 5 is fixedly connected to the lower end of the mounting plate 3, a sliding member 8 is connected to the side wall of the fixing rod 5 through a reset spring, the sliding member 8 is slidably connected to the fixing rod 5, a mounting plate 10 is connected to the side wall of the sliding member 8 through a connecting mechanism, the mounting plate 10 is fixedly connected to a mounting frame 11, a limiting claw 12 is connected to a torsion spring 16 through a rotating shaft 17 in the mounting frame 11.

[0022] The connection mechanism includes two connection blocks 9 arranged on the two side walls of the sliding member 8 . Two screw rods are commonly arranged on the two connection blocks 9 . Two nuts are arranged on the screw rods. The connection blocks 9 are fixedly connected to the mounting plate 10 .

[0023] A limiting mechanism for limiting the position of the limiting claw 12 is disposed on the side wall of the mounting plate 10 . The limiting mechanism includes a limiting pin 15 disposed on the side wall of the mounting plate 10 . The limiting pin 15 is threadedly connected to the mounting plate 10 .

[0024] In the utility model, the side wall of the limiting claw 12 is fixedly connected to the limiting cylinder 13, and a movable rod 14 is arranged in the limiting cylinder 13. The movable rod 14 can first contact the plane near the screw installation position, so that the screw can be vertically screwed into the screw hole.

[0025] In the utility model, the movable rod 14 is threadedly connected with the limiting cylinder 13, so that screws of different lengths can be positioned by the movable rod 14 and the limiting cylinder 13 before being screwed in, and a rotating block is provided on the side wall of the limiting pin 15.

[0026] In the utility model, a stopper 7 is installed at the lower end of the mounting plate 3 through a rotating shaft, wherein the side wall of a sliding member 8 is fixedly connected to the limit block 6, and the side wall of the stopper 7 is provided with a limit groove that can cooperate with the limit block 6, so that when the movable rod 14 contacts the plane, there is no need to hold the electric screwdriver with one hand and hold the sliding member 8 with the other hand to make it immobile.

[0027] In the initial state, the stopper 7 is separated from the limiter 6 .

[0028] When in use, hold the electric screwdriver body 1 with one hand, and place the screw between the claw tips of the three limiting claws 12 with the other hand. During the downward movement, the nut of the screw enters between the vertical parts of the three claw tips. Since the three limiting claws 12 are pressed toward the middle under the limit of the torsion spring 16, the nut of the screw is pressed tightly. Hold the electric screwdriver body 1 and move the screw to align it with the screw hole. Then move the screw downward so that the lower end of the screw enters the screw hole. Move the electric screwdriver body 1 downward so that the drill bit enters the nut. After opening the electric screwdriver body 1, the screw can be screwed in. Since the sliding member 8 always slides on the fixing rod 5 during the screwing-in process, and the three limiting claws 12 will not open, they are always positioned in front of the electric screwdriver body 1, thereby preventing the screw from loosening.

[0029] Before the screw is aligned with the screw hole, one of the sliding members 8 can be held with one hand so that the movable rod 14 rests on the plane near the screw, and then the electric screwdriver body 1 is moved to align the screw with the screw hole, so that the screw can be screwed into the screw hole in a vertical posture to avoid the screw being screwed in at an angle.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and practical concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A handheld electric screwdriver with a positioning structure, comprising an electric screwdriver body (1), characterized in that: The side wall of the electric screwdriver body (1) is fixedly connected to a mounting tube (2), and the side wall of the mounting tube (2) is provided with a fixing mechanism for fixing screws. The fixing mechanism comprises a mounting plate (3) arranged on the side wall of the mounting tube (2), and a plurality of through slots (4) are provided at the upper end of the mounting plate (3). A fixing rod (5) is fixedly connected to the lower end of the mounting plate (3). The side wall of the fixing rod (5) is connected to a sliding member (8) via a reset spring, and the side wall of the sliding member (8) is connected to a mounting plate (10) via a connecting mechanism. The mounting plate (10) is fixedly connected to a mounting frame (11), and a limiting claw (12) is connected to a torsion spring (16) via a rotating shaft (17) in the mounting frame (11).

2. The handheld electric screwdriver with a positioning structure according to claim 1, characterized in that: The connection mechanism comprises two connection blocks (9) arranged on the two side walls of the sliding member (8), two screw rods are commonly provided on the two connection blocks (9), two nuts are provided on the screw rods, the connection blocks (9) are fixedly connected to the mounting plate (10), and the side wall of the mounting plate (10) is provided with a limiting mechanism for limiting the position of the limiting claw (12).

3. The handheld electric screwdriver with a positioning structure according to claim 2, characterized in that: The limiting mechanism comprises a limiting pin (15) arranged on the side wall of the mounting plate (10), and the limiting pin (15) is threadedly connected to the mounting plate (10).

4. The handheld electric screwdriver with a positioning structure according to claim 3, characterized in that: The side wall of the limiting claw (12) is fixedly connected to the limiting cylinder (13), and a movable rod (14) is arranged inside the limiting cylinder (13).

5. The handheld electric screwdriver with a positioning structure according to claim 4, characterized in that: The movable rod (14) is threadedly connected to the limiting cylinder (13), and a rotating block is provided on the side wall of the limiting pin (15).

6. The handheld electric screwdriver with a positioning structure according to claim 5, characterized in that: A stopper (7) is installed at the lower end of the mounting plate (3) via a rotating shaft, and a side wall of one of the sliding members (8) is fixedly connected to a limit block (6), and a limit groove capable of cooperating with the limit block (6) is provided on the side wall of the stopper (7).

Images