Electric screwdriver operation turn number control device

Abstract

The utility model provides an electric screwdriver operation turn number control device which belongs to the technical field of electric screwdrivers and comprises an electric screwdriver body, a driving motor, a power line, a rotating shaft, a screwdriver rod, a driving switch and a control panel, the driving motor is arranged on the inner side of the electric screwdriver body, the power line is electrically connected to the upper portion of the driving motor, and the rotating shaft is installed at the output end of the driving motor. A screwdriver rod is detachably installed on the rotating shaft, and a driving switch is embedded in the upper portion of the right side of the electric screwdriver body. Through the arrangement of the positioning assembly, when the control panel controls the driving motor to stop rotating, the electromagnetic block is controlled to be connected with a power supply, the electromagnetic block generates magnetism to adsorb the gear disc, the gear disc and the rotating shaft are prevented from continuously rotating due to inertia, and the rack is adsorbed by the magnetism generated by the electromagnetic block; the rack moves towards one side of the gear disc along the embedded groove, the rack is meshed with the gear disc, it is guaranteed that the gear disc and the rotating shaft stop rotating, and therefore the effect of controlling the batch rod to stop rotating is achieved, double rotation stopping is achieved, and the effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of electric screwdrivers, in particular to a device for controlling the number of revolutions of an electric screwdriver. Background Art

[0002] An electric screwdriver, also known as an electric screwdriver or electric screwdriver bit, is an electric tool that is mainly used to tighten and loosen screws. It is widely used in assembly lines, electromechanical, electrical appliances, electronics and other production departments. Electric screwdrivers are divided into two types: wired electric screwdrivers and wireless electric screwdrivers. The head design of electric screwdrivers is mainly flat and cross. Most of the heads can be rotated to facilitate the replacement of screwdriver bits. The gears of electric screwdrivers are mainly divided into half gear, first gear, second gear, and third gear. Some electric screwdrivers have five or even six gears. They are mainly used to adapt to different assembly requirements through different gears. Electric screwdrivers in the prior art can adjust the torque but cannot control the number of rotations.

[0003] For example, a Chinese patent with patent publication number CN215219467U discloses a device for controlling the number of revolutions of an electric batch. The device can monitor the number of revolutions of a batch rod through a code disk, a slotted optical coupler, and a sensor connected to one end of a sensor line, and can control the disconnection of the electric batch through a control panel. The control panel can also close the electromagnetic brake circuit inside the electric batch to directly stop the batch rod, with high controllable accuracy. By controlling the number of revolutions of the electric batch, it is avoided that the wire cannot be inserted when the screw is not fully withdrawn or the screw falls off when it is withdrawn too far, so that the electric batch is more controllable and has a better use effect when in use, and effectively improves work efficiency.

[0004] However, when the electric screwdriver stops rotating, the device completely controls the screw rod to stop rotating through the electromagnetic brake circuit inside the electric screwdriver. Since the electric screwdriver rotates at a fast speed and the inertia force of rotation is large when it stops rotating, the effect of simply controlling the screw rod to stop rotating through the electromagnetic brake circuit is not good, which causes the screw rod to rotate due to inertia and cause the bolt to fall off. Therefore, a device for controlling the number of rotations of an electric screwdriver is designed to solve the above problem. Utility Model Content

[0005] The utility model aims to solve the problems existing in the above-mentioned background technology and proposes a device for controlling the number of revolutions of an electric screwdriver.

[0006] The technical problem to be solved by the utility model is to provide a device for controlling the number of revolutions of an electric screwdriver. The device double-stops the gear plate by connecting an electromagnetic block to a rack, thereby ensuring that the rotating shaft and the screwdriver rod stop rotating directly, and preventing the screwdriver rod from continuously rotating due to inertia, causing the bolt to fall off. The utility model has high practicality.

[0007] The utility model provides a device for controlling the number of revolutions of an electric screwdriver, comprising: an electric screwdriver body, a driving motor, a power cord, a rotating shaft, a screw rod, a driving switch and a control panel, wherein the inner case of the electric screwdriver body is provided with a driving motor, the upper part of the driving motor is electrically connected with a power cord, a rotating shaft is installed at the output end of the driving motor, a screw rod is detachably installed on the rotating shaft, a driving switch is embedded in the upper right side of the electric screwdriver body, a control panel is embedded in the upper left side of the electric screwdriver body, a code disk is fixedly provided above the rotating shaft, a slot-type optical coupler is fixedly provided on the inner left side of the electric screwdriver body through a fixing rod, a gear disk is fixedly provided below the rotating shaft, and a positioning component is fixedly provided on the inner right side of the electric screwdriver body:

[0008] The positioning assembly includes an inverted concave block, an electromagnetic block, a rack, an embedding groove and a spring. The electromagnetic block is fixedly arranged at the left end of the inverted concave block, an embedding groove is opened in the center of the inverted concave block, a spring is fixedly arranged at the right end of the embedding groove, and the rack is fixedly arranged at the left end of the spring.

[0009] Preferably, the control panel is electrically connected to the driving motor, the slot-type optical coupler and the electromagnetic block, and a touch display screen is provided on the control panel.

[0010] Preferably, the code disc is located at the inner bottom of the electric screwdriver body, and the slot-type optical coupler is sleeved on the code disc.

[0011] Preferably, the inverted concave block is sleeved on the gear plate, and two electromagnetic blocks are provided, and the two electromagnetic blocks are respectively located above and below the gear plate.

[0012] Preferably, the tooth pitch of the rack matches the tooth pitch of the gear plate, and the rack can mesh with the gear plate.

[0013] Preferably, when the spring is in a naturally extended state, the rack and the gear plate are separated from each other.

[0014] Compared with the prior art, the utility model has at least the following beneficial effects:

[0015] 1. When the electric screwdriver body of the utility model is working, the driving motor drives the rotating shaft to rotate, and the rotating shaft drives the code disk to rotate. The number of turns of the code disk is detected by the slotted optical coupler, and the number of turns of the code disk is controlled by the control panel. After reaching the predetermined number of turns, the driving motor is controlled to stop running by the control panel, so as to achieve the effect of controlling the number of turns of the electric screwdriver body, and avoid the situation that the wire cannot be inserted when the screw is not fully withdrawn or the screw falls off when the screw is withdrawn too much.

[0016] 2. The utility model is provided with a positioning component. When the control panel controls the driving motor to stop rotating, the electromagnetic block is controlled to be powered on at the same time. The electromagnetic block generates magnetism to adsorb the gear plate to prevent the gear plate and the rotating shaft from continuing to rotate due to inertia. The magnetism generated by the electromagnetic block adsorbs the rack, and the rack moves along the embedded groove to one side of the gear plate. The rack and the gear plate are meshed with each other to ensure that the gear plate and the rotating shaft stop rotating, thereby achieving the effect of controlling the rotation of the batch rod. The double stop has a better effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.

[0018] Figure 1 It is a schematic cross-sectional view of the overall structure of the utility model.

[0019] Figure 2 For this utility model Figure 1 A is an enlarged schematic diagram of the structure.

[0020] Figure 3 It is a three-dimensional schematic diagram of the local structure of the utility model.

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the positioning component of the utility model.

[0022] [reference numerals]

[0023] 1. Electric screwdriver body; 2. Driving motor; 3. Power cord; 4. Rotating shaft; 5. Screwdriver rod; 6. Driving switch; 7. Control panel; 8. Code disk; 9. Slotted optical coupler; 10. Gear disk; 11. Inverted concave block; 1101. Electromagnetic block; 1102. Rack; 1103. Embedded slot; 1104. Spring. DETAILED DESCRIPTION

[0024] Example:

[0025] like Figure 1-Figure 4As shown, an embodiment of the utility model provides a device for controlling the number of revolutions of an electric screwdriver, comprising: an electric screwdriver body 1, a driving motor 2, a power cord 3, a rotating shaft 4, a screw rod 5, a driving switch 6 and a control panel 7. The inner case of the electric screwdriver body 1 is provided with a driving motor 2, the upper part of the driving motor 2 is electrically connected with a power cord 3, a rotating shaft 4 is installed at the output end of the driving motor 2, a screw rod 5 is detachably installed on the rotating shaft 4, a driving switch 6 is embedded in the upper right side of the electric screwdriver body 1, a control panel 7 is embedded in the upper left side of the electric screwdriver body 1, a code disk 8 is fixedly provided above the rotating shaft 4, a slot-type optical coupler 9 is fixedly provided on the left side of the inner part of the electric screwdriver body 1 through a fixing rod, a gear disk 10 is fixedly provided below the rotating shaft 4, and a positioning component is fixedly provided on the right side of the inner part of the electric screwdriver body 1:

[0026] The positioning assembly includes an inverted concave block 11, an electromagnetic block 1101, a rack 1102, an embedding groove 1103 and a spring 1104. The electromagnetic block 1101 is fixedly arranged at the left end of the inverted concave block 11, an embedding groove 1103 is opened in the center of the inverted concave block 11, a spring 1104 is fixedly arranged at the right end of the embedding groove 1103, and the rack 1102 is fixedly arranged at the left end of the spring 1104.

[0027] During actual use, when the electric screwdriver body 1 is working, the driving motor 2 drives the rotating shaft 4 to rotate, and the rotating shaft 4 drives the code disk 8 to rotate. The number of revolutions of the code disk 8 is detected by the slotted optical coupler 9, and the number of revolutions of the code disk 8 is controlled by the control panel 7. After reaching the predetermined number of revolutions, the driving motor 2 is controlled to stop running by the control panel 7, so as to achieve the effect of controlling the number of revolutions of the electric screwdriver body 1, and avoid the situation that the wire cannot be inserted when the screw is not fully withdrawn or the screw falls off when the screw is withdrawn too much;

[0028] By providing a positioning component, when the control panel 7 controls the driving motor 2 to stop rotating, the electromagnetic block 1101 is controlled to be powered on at the same time, and the electromagnetic block 1101 generates magnetism to adsorb the gear plate 10 to prevent the gear plate 10 and the rotating shaft 4 from continuing to rotate due to inertia, and the magnetism generated by the electromagnetic block 1101 adsorbs the rack 1102, and the rack 1102 moves along the embedded groove 1103 to one side of the gear plate 10, and the rack 1102 and the gear plate 10 are meshed with each other to ensure that the gear plate 10 and the rotating shaft 4 stop rotating, thereby achieving the effect of controlling the rotation of the batch rod 5, double stopping, and better effect.

[0029] In this embodiment, the control panel 7 is electrically connected to the drive motor 2, the slot-type optocoupler 9 and the electromagnetic block 1101, and a touch display screen is provided on the control panel 7 to facilitate the control panel 7 to control the opening and closing of the drive motor 2 and to facilitate the control panel 7 to control the electromagnetic block 1101 to charge.

[0030] In this embodiment, the code disk 8 is located at the inner bottom of the electric screwdriver body 1, and the slot-type optical coupler 9 is sleeved on the code disk 8, so that the slot-type optical coupler 9 can count the number of rotations of the code disk 8.

[0031] In this embodiment, the inverted concave block 11 is sleeved on the gear plate 10, and two electromagnetic blocks 1101 are provided, and the two electromagnetic blocks 1101 are respectively located above and below the gear plate 10. The two electromagnetic blocks 1101 can absorb the gear plate 10 to prevent the gear plate 10 from rotating.

[0032] In this embodiment, the tooth pitch of the rack 1102 matches the tooth pitch of the gear plate 10 , and the rack 1102 can mesh with the gear plate 10 , so as to limit the rotation of the gear plate 10 when the rack 1102 and the gear plate 10 mesh with each other.

[0033] In this embodiment, when the spring 1104 is in a naturally extended state, the rack 1102 and the gear plate 10 are separated from each other, and the rack 1102 will not affect the normal rotation of the gear plate 10 and the rotating shaft 4.

[0034] The above are only preferred implementations of the utility model. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the utility model. These should also be regarded as the protection scope of the utility model. These will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A device for controlling the number of revolutions of an electric screwdriver, characterized in that: include: An electric screwdriver body (1), a driving motor (2), a power cord (3), a rotating shaft (4), a screw rod (5), a driving switch (6) and a control panel (7), wherein the inner side of the electric screwdriver body (1) is provided with a driving motor (2), the upper side of the driving motor (2) is electrically connected with a power cord (3), a rotating shaft (4) is installed at the output end of the driving motor (2), a screw rod (5) is detachably installed on the rotating shaft (4), a driving switch (6) is embedded in the upper right side of the electric screwdriver body (1), a control panel (7) is embedded in the upper left side of the electric screwdriver body (1), a code disk (8) is fixedly arranged above the rotating shaft (4), a slotted optical coupler (9) is fixedly arranged on the left side of the inner side of the electric screwdriver body (1) through a fixing rod, a gear disk (10) is fixedly arranged below the rotating shaft (4), and a positioning component is fixedly arranged on the right side of the inner side of the electric screwdriver body (1): The positioning assembly comprises an inverted concave block (11), an electromagnetic block (1101), a rack (1102), an embedding groove (1103) and a spring (1104); the electromagnetic block (1101) is fixedly arranged at the left end of the inverted concave block (11); an embedding groove (1103) is provided at the center of the inverted concave block (11); a spring (1104) is fixedly arranged at the right end of the embedding groove (1103); and the rack (1102) is fixedly arranged at the left end of the spring (1104).

2. The electric screwdriver operation revolution control device according to claim 1, characterized in that: The control panel (7) is electrically connected to the drive motor (2), the slot-type optical coupler (9) and the electromagnetic block (1101), and a touch display screen is provided on the control panel (7).

3. The electric screwdriver operation revolution control device according to claim 2, characterized in that: The code disc (8) is located at the inner bottom of the electric screwdriver body (1), and the slot-type optical coupler (9) is sleeved on the code disc (8).

4. The electric screwdriver operation revolution control device according to claim 3, characterized in that: The inverted concave block (11) is sleeved on the gear plate (10), and two electromagnetic blocks (1101) are provided, and the two electromagnetic blocks (1101) are respectively located above and below the gear plate (10).

5. The electric screwdriver operation revolution control device according to claim 4, characterized in that: The tooth pitch of the rack (1102) matches the tooth pitch of the gear plate (10), and the rack (1102) can mesh with the gear plate (10).

6. The electric screwdriver operation revolution control device according to claim 5, characterized in that: When the spring (1104) is in a naturally stretched state, the rack (1102) and the gear plate (10) are separated from each other.

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