KR20130046278A - Apparatus for control torque of auto wrench and auto wrench - Google Patents

Abstract

PURPOSE: A torque adjustment control device for an automatic wrench and an automatic wrench are provided to be shared with a plurality of electric wrenches through one torque control device and to be widely utilized. CONSTITUTION: A torque adjustment control device for an automatic wrench comprises a wrench control body member(10) and a torque controller. The wrench control body member is attached to and detached from an electric wrench. The torque controller is equipped in the wrench control body member. The torque controller controls torque of a motor by being connected to the motor of the electric wrench.

Description

Apparatus for Control Torque of Auto Wrench and Auto Wrench}

The present invention relates to a torque adjustment control device for an automatic wrench and an automatic wrench, and more particularly, to a torque adjustment control device for an automatic wrench freely removable from the automatic wrench.

In general, an electric wrench is a device that can simply tighten or loosen fasteners such as bolts and nuts using an electric motor.

Be careful when working with bolts and nuts used for assembling or fastening high-strength, heavy-weight materials for power transmission towers, depending on their purpose and location, and the tightening force that should be applied to each standard. Is needed.

In particular, when tightened less than the tightening force (torque) of each of the bolts and nuts, there is a high risk of causing a serious disaster such as collapse of the equipment by breaking down the balance of the tower due to natural vibration, vibration, etc. over time.

In addition, when overtightening occurs in the bolts and nuts, the bolts and nuts may not be able to withstand the tightening force, and thus the tightening force may be weakened, which may act as a major cause of equipment failure or accident.

In this transmission tower construction process, evenly tightening bolts and nuts to a specified torque is the most simple and basic work, but it is a very important task to secure construction quality.

A torque wrench is usually used to tighten the bolts and nuts at the construction site.

However, in the case of a general electric wrench, the torque cannot be adjusted constantly when tightening the bolt and nut, which leads to less tightening or overtightening at each fastening part of the bolt and nut, resulting in poor construction quality and large accidents such as equipment collapse. There was a problem.

Therefore, the automatic wrench capable of torque adjustment control can be used, but the automatic wrench has a built-in torque adjustment control device, which is heavy and expensive.

In addition, there are many tasks that do not require torque tightening rather than the special work requiring torque adjusting tightening, such as transmission towers, so that automatic torque adjustment is possible. It is used a lot.

SUMMARY OF THE INVENTION An object of the present invention is to provide a torque adjustment control device and an automatic wrench for an automatic wrench, in which the weight of the automatic wrench is reduced, the price is lowered, and the utilization of the automatic wrench is increased.

The object of the present invention is a wrench control body member detachable from the electric wrench; And

It is solved by providing a torque adjustment control device for an automatic wrench, which is provided in the wrench control body member and is connected to a motor of the electric wrench to control a torque of the motor.

The wrench control body member of the torque adjustment control device for an automatic wrench according to the present invention includes: a first body part surrounding a portion of an outer circumferential surface of the electric wrench; And a second body portion rotatably hinged to the first body portion and surrounding another portion of an outer circumferential surface of the electric wrench.

The wrench control body member of the torque adjustment control device for an automatic wrench according to the present invention further includes a body coupling portion connecting the first body portion and the second body portion.

The body engaging portion of the torque adjustment control device for an automatic wrench according to the present invention is provided on either side of the end portion of the first body portion and the second body portion, and is a fixing elastic piece having a locking projection, wherein the first On the other side of the end of the body portion and the second body portion is formed a locking groove into which the locking projection is inserted.

The fixing elastic piece of the torque adjustment control device for an automatic wrench according to the present invention protrudes an engaging release projection protruding outward from an end portion.

A casing outer peripheral surface of the casing of the electric wrench of the torque adjustment control device for an automatic wrench according to the present invention is provided with a mounting groove portion to which the wrench control body member is mounted, and the mounting groove portion is provided on an inner surface of the first body portion and the second body portion. The mounting protrusion inserted into the protrusion protrudes.

Mounting protrusions protrude from the inner circumference of the first body portion and the second body portion of the torque adjustment control device for an automatic wrench according to the present invention, and a mounting groove portion into which the mounting protrusions are inserted is formed on the casing outer circumferential surface of the electric wrench. do.

An anti-rotation protrusion protrudes from the inner surface of the first body portion and the second body portion of the torque adjustment control device for an automatic wrench according to the present invention, and the electric wrench is provided with an anti-rotation groove into which the anti-rotation protrusion is inserted. .

The torque adjustment control device for an automatic wrench according to the present invention further includes a motor control device provided in the electric wrench and controlling the operation of the motor, and connected to the torque control device.

The torque control device of the torque adjustment control device for an automatic wrench according to the present invention includes a first connection terminal provided on an inner surface of the wrench control body member and connected to the motor control device, and the motor control device includes the electric motor. And a second connection terminal provided on an outer circumferential surface of the wrench and connected to the first connection terminal.

The first connection terminal of the torque adjustment control device for an automatic wrench according to the present invention is a plurality of contact terminal pins protruding on an inner surface of the wrench control body member, and the second connection terminal is a terminal into which the contact terminal pin is inserted. It is a some pin accommodating terminal in which the groove was formed.

The motor control device of the torque adjustment control device for automatic wrench according to the present invention,

A power supply unit supplying power to the motor; A motor control unit connected to the power supply unit and the motor to control operation of the motor; A torque output unit connected to the motor control unit and the torque control device and configured to collect and transmit information so that the motor control unit outputs the torque selected by the torque control device; And a torque adjustment determining unit connected to the motor control unit and the torque control device to recognize the connection of the torque control device.

The torque control device of the torque adjustment control device for an automatic wrench according to the present invention includes a torque input unit for setting torque control; A display unit for displaying the torque input to the torque input unit so as to be confirmed; A torque control power supply unit connected to the power supply unit to receive power from the power supply unit; A torque adjustment control unit connected to the torque output unit and the torque input unit, storing torque in stages, and transferring a torque stage selected from the torque input unit to the torque output unit; And a torque adjustment recognizing unit connected to the torque adjustment determining unit and the torque input unit and recognizing a connection between the torque adjustment determining unit and transferring information to the torque input unit.

In addition, an object of the present invention is provided with a socket connected to the fastener on one side, the motor is provided with a motor for rotating the socket inside the casing, the electric wrench provided with an operation control switch unit for supplying power to the motor;

It is provided inside the casing of the electric wrench, and includes a motor control device for controlling the operation of the motor,

The motor control device is solved by providing an automatic wrench capable of adjusting torque by a torque adjustment control device detachable from a casing of the electric wrench.

The torque adjustment control device of the automatic wrench according to the present invention includes a wrench control body member detachable from the electric wrench; And a torque control device provided in the wrench control body member and connected to the motor of the electric wrench to control torque of the motor.

The motor control device of the automatic wrench according to the present invention, the power supply for supplying power to the motor; A motor control unit connected to the power supply unit and the motor to control operation of the motor; A torque output unit connected to the motor control unit and the torque control device and configured to collect and transmit information so that the motor control unit outputs the torque selected by the torque control device; And a torque adjustment determining unit connected to the motor control unit and the torque control device to recognize the connection of the torque control device.

The torque control device of the automatic wrench according to the present invention, the torque control power supply is connected to the power supply to receive power from the power supply; A torque input unit for setting torque control; And a display unit for displaying the torque input to the torque input unit so as to be confirmed. A torque adjustment control unit connected to the torque output unit and the torque input unit, storing torque in stages, and transferring a torque stage selected from the torque input unit to the torque output unit; And a torque adjustment recognizing unit connected to the torque adjustment determining unit and the torque input unit and recognizing a connection between the torque adjustment determining unit and transferring information to the torque input unit.

According to the present invention, the torque control part capable of adjusting the motor torque of the electric wrench can be mounted and used only when torque control is required, thereby increasing the convenience of the operator during the work.

The present invention can be purchased separately from the electric wrench and the torque control device, and can be shared with a plurality of electric wrenches in one torque control device to reduce the burden on the purchase, there is an effect that can be widely utilized.

The present invention can reduce the weight by separating the torque control portion in the case of the general operation used without torque control has the effect of greatly improving the utilization in the work.

1 is an exploded perspective view showing the present invention
Figure 2 is a front view showing a torque adjustment control device for an automatic wrench according to the present invention.
3 is a cross-sectional view showing an embodiment of the present invention.
4 is a block diagram showing a motor control device and a torque control device according to the present invention;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIG. 1, the electric wrench 100 includes a socket 120 connected to fasteners such as bolts and nuts on one side of the casing 100a. In addition, the casing 100a is provided with a motor 110 that receives electric power and rotates the socket 120 in the forward and reverse directions. The other side of the casing (100a) is provided with a handle portion (100b) for the operator to hold hands, the handle portion (100b) operation control switch unit 130 to supply and cut off the power supplied to the motor 110 ) Is provided.

The operation control switch unit 130 includes an operation switch for turning on and off the power supplied to the motor 110, and a direction switch for controlling the forward and reverse rotation of the motor 110.

A plurality of gear bodies (not shown) are provided in the casing 100a of the electric wrench 100 to transmit the rotational force of the motor 110 to the socket 120.

The electric wrench 100 selects the rotation direction of the socket 120 according to tightening and loosening of the bolt and nut, connects the bolt or nut to the socket 120, and then presses the operation switch to press the motor 110. Tighten or loosen the bolt or nut by turning

Torque adjustment control device 200 for an automatic wrench according to the present invention is detachable to the casing (100a) of the electric wrench (100). Torque adjustment control device 200 for automatic wrench includes a wrench control body member (10) detachable to the casing (100a) of the electric wrench (100).

In addition, the wrench control body member 10 is provided with a torque control device 20 connected to the motor 110 of the electric wrench 100 to control the torque of the motor 110.

The torque control device 20 is provided in the electric wrench 100 and is connected to a motor control device 30 for controlling the operation of the motor 110.

The torque control device 20 is provided on the inner side of the wrench control body member 10 and has a first connection terminal 20a connected to the motor control device 30, and the motor control device 30 Is provided on the outer peripheral surface of the casing (100a) of the electric wrench 100 includes a second connection terminal (30a) connected to the first connection terminal (20a).

The first connection terminal 20a is a plurality of contact terminal pins protruding from the inner surface of the wrench control body member 10, and the second connection terminal 30a is formed with a terminal groove into which the contact terminal pin is inserted. As the plurality of pin receiving terminals, the contact terminal pins are inserted into the pin receiving terminals to be in contact with each other so that the contact state is not released by vibration during the operation of the electric wrench 100, and the contact state is maintained firmly.

The torque control device 20 also includes a torque input unit 21 for setting torque control; And a display unit 22 for displaying the torque input to the torque input unit 21 so as to be confirmed.

The torque input unit 21 includes a plurality of input buttons provided on the outer surface of the wrench control body member 10 to input or select a value or step of the torque adjusted through the input button, an operation mode, and the like. do.

The display unit 22 not only displays the value of the torque to be adjusted or the stage of the torque, but also displays the tightening mode, the loosening mode, etc. according to the rotational direction of the socket 120 to increase the convenience of the operator during operation.

2, the motor control device 30 includes a power supply unit 31 for supplying power to the motor 110;

A motor control unit 32 connected to the power supply unit 31 and the motor 110 and controlling the operation of the motor 110;

A torque output unit connected to the motor control unit 32 and the torque control unit 20 to collect and transmit information so that the motor control unit 32 outputs the torque selected by the torque control unit 20 ( 33);

It is connected to the motor control unit 32 and the torque control device 20, and includes a torque adjustment determination unit 34 for recognizing the connection of the torque control device 20.

The torque adjustment determiner 34 recognizes the connection of the torque control device 20 and provides information so that the motor control unit 32 can perform the operation with the adjusted torque when the torque control device 20 is connected. In addition, when the torque control device 20 is separated, the motor controller 32 serves to provide information so that the motor 110 can be operated with a predetermined general torque without torque adjustment.

In addition, the torque control device 20 includes a torque control power supply unit 23 connected to the power supply unit 31 to receive power from the power supply unit 31;

A torque adjustment control unit 24 connected to the torque output unit 33 and the torque input unit 21, and storing the torque in stages, and transferring the selected torque stage from the torque input unit 21 to the torque output unit 33. ); And

The torque adjustment recognition unit 25 is connected to the torque adjustment determination unit 34 and the torque input unit 21, and recognizes a connection with the torque adjustment determination unit 34 to transmit information to the torque input unit 21. It includes.

When the torque control device 20 is connected to the motor control device 30, the torque control power supply unit 23 utilizes a compact and lightweight transformer technology to secure portability.

The power supply unit 31, the torque control power supply unit 23, the torque output unit 33, the torque adjustment control unit 24, the torque adjustment determination unit 34, and the torque adjustment recognition unit 25 are each separate. The first connection terminal 20a and the second connection terminal 30a are connected by contact.

The operation principle in the case where the torque adjustment control device is detached will be described. When the torque adjustment control device is detached from the electric wrench 100, the motor control unit 32 determines that the torque adjustment control device is the torque adjustment determination unit 34. Since it is not possible to receive information from the simple tightening operation situation, and operates the motor 110 at a predetermined general torque to perform a simple tightening operation.

When the torque adjustment control device 200 is mounted on the electric wrench 100 to connect the motor control device 30 and the torque control device 20, the first connection terminal 20a and the second connection are connected. Through the connection of the terminal 30a, the torque adjustment determining unit 34 recognizes the torque adjustment work situation and transmits the information to the motor control unit 32. In addition, the torque input unit may be configured to recognize the torque adjustment unit 25 through the connection of the first connection terminal 20a and the second connection terminal 30a to activate the torque adjustment unit in a state in which torque adjustment is possible. Information is sent to 21.

After the torque adjustment control device is mounted on the electric wrench 100, the torque input unit 21 selects a torque suitable for the standard of the bolt and nut used for the work, and selects a stepwise torque, and the torque input unit 21 is selected. The information of the selected torque is transmitted to the torque output unit 33 so that the torque adjustment tightening operation can be performed through the motor control unit 32 in which the torque in stages is set. The torque output unit 33 outputs the selected torque to the motor control unit 32 so that the operation can be performed with the torque corresponding to the received information, and the motor control unit 32 matches the motor 110 with the selected torque. To control the driving.

In addition, the selected and adjusted torque can be confirmed through the display unit 22 displayed in the LCD form, and the display unit 22 displays the step and the torque of the selected torque, so that the operator can check the working state.

Meanwhile, referring to FIGS. 1 and 3, the wrench control body member 10 may include a first body part 11 surrounding a portion of an outer circumferential surface of the electric wrench 100; A second body portion 12 rotatably hinged to the first body portion 11 and surrounding another portion of an outer circumferential surface of the electric wrench 100.

The first body portion 11 and the second body portion 12 are each formed of a semi-circular ring body is formed as a circular ring body when connecting, for example, which is the casing (100a) of the electric wrench 100 Note that the deformation can be carried out in various ways depending on the shape of the.

The wrench control body member 10 is firmly mounted by being wrapped around the outer circumferential surface of the electric wrench 100 with the first body portion 11 and the second body portion 12 rotatably connected to each other. It is prevented from being separated arbitrarily by heavy vibration or external impact.

On the inner surface of the first body portion 11 or the inner surface of the second body portion 12 material which is in contact with the outer circumferential surface of the electric wrench 100, the first connection terminal 20a, that is, a plurality of contact terminal pins It protrudes.

In addition, the wrench control body member 10 preferably further includes a body coupling portion 13 connecting the first body portion 11 and the second body portion 12.

The body engaging portion 13 is provided on either side of the end of the first body portion 11 and the second body portion 12, the fixing elastic piece (13a) having a locking projection (13b) As an example, a locking groove 13c into which the locking protrusion 13b is inserted is formed at the other side of the ends of the first body portion 11 and the second body portion 12.

That is, the fixing elastic piece 13a is coupled to an inner side at any one side of the ends of the first body part 11 and the second body part 12, and the fixing elastic piece 13a is formed on the side thereof. The first body portion 11 and the second body portion 12 of the ends of the other side of the other side is seated overlapping, is inserted into the engaging groove (13c) formed on the other side end.

The fixing elastic piece 13a has a locking release protrusion 13d projecting outwardly at an end thereof and is bent when the operator pulls the locking release protrusion 13d so that the locking protrusion 13b is caught by the locking groove 13c. Departed from so that the connection state of the first body portion 11 and the second body portion 12 can be easily released.

In addition, a mounting protrusion 14 protrudes around an inner surface of the first body part 11 and the second body part 12, and the mounting protrusion part is formed on an outer circumferential surface of the casing 100a of the electric wrench 100. Preferably, the mounting groove 15 into which the 14 is inserted is formed.

The mounting protrusion 14 is inserted into the mounting groove 15 to prevent the wrench control body member 10 from moving in the longitudinal direction of the electric wrench 100, and the wrench control body member 10 to the It can be more firmly mounted to the electric wrench (100).

In addition, the anti-rotation protrusion 16 protrudes from the inner surface of the first body part 11 and the second body part 12, and the anti-rotation protrusion 16 is inserted into the electric wrench 100. The anti-rotation groove 17 is formed.

The anti-rotation protrusion 16 is inserted into the anti-rotation groove 17 when the wrench control body member 10 is mounted to the electric wrench 100, and vibrates generated during operation of the electric wrench 100, or It is possible to prevent the wrench control body member 10 from being rotated by an external impact and to more firmly mount the wrench control body member 10 to the electric wrench 100.

The wrench control body member 10 rotates the first body portion 11 and the second body portion 12 about a hinge so that an end portion of the first body portion 11 and the second body portion ( Inserting the electric wrench 100 between the gaps between the ends of the opening 12, and the first body 11 and the second body portion 12 is rotated oppositely around the hinge to the first body It is mounted by connecting both ends of the portion 11 and the second body portion 12 to the body coupling portion 13.

Referring to FIG. 4, when the wrench control body member 10 is mounted to the electric wrench 100 as described above, the first connection terminal 20a, that is, the contact terminal pin is connected to the second connection terminal 30a. That is, the motor control device 30 and the torque control device 20 are connected while being inserted into the terminal groove of the pin receiving terminal.

In addition, the connection state of the body coupling part 13 is released to open the gap between the first body part 11 and the second body part 12 to open the wrench control body member 10 to the electric wrench 100. ), The connection between the motor control device 30 and the torque control device 20 is released.

According to the present invention, the torque control part capable of adjusting the motor torque of the electric wrench 100 can be mounted and used only when torque control is required, thereby increasing the convenience of the operator.

The present invention can be purchased separately from the electric wrench 100 and the torque adjustment control device 200, can be shared with a plurality of electric wrench 100 in one torque adjustment control device 200 to reduce the burden at the time of purchase, It is effective to be widely used.

The present invention can reduce the weight by separating the torque control portion in the case of the general operation used without torque control has the effect of greatly improving the utilization in the work.

The present invention is not limited to the above-described embodiments, and various changes can be made without departing from the gist of the present invention, which is understood to be included in the configuration of the present invention.

10: wrench control body member 11: the first body portion
12: second body portion 13: body coupling portion
20: torque control device 21: torque input unit
22: display unit 23: torque control power supply unit
24: torque adjustment control unit 25: torque adjustment recognition unit
30: motor control device 31: power supply
32: motor control unit 33: torque output unit
34: torque adjustment determination unit 100: electric wrench
200: torque adjustment control device

Claims (17)

A wrench control body member detachable from the electric wrench; And
Torque adjustment control device for an automatic wrench provided on the wrench control body member, comprising a torque control device connected to the motor of the electric wrench to control the torque of the motor. The method according to claim 1,
The wrench control body member,
A first body part surrounding a portion of an outer circumferential surface of the electric wrench;
And a second body portion rotatably hinged to the first body portion and surrounding another portion of an outer circumferential surface of the electric wrench. The method according to claim 2,
The wrench control body member,
Torque adjustment control device for an automatic wrench further comprises a body coupling portion for connecting the first body portion and the second body portion. The method according to claim 3,
The body coupling portion is provided on either side of the end of the first body portion and the second body portion, is a fixing elastic piece having a locking projection,
The other side of the end portion of the first body portion and the second body portion torque adjustment control device for an automatic wrench, characterized in that the engaging groove for inserting the engaging projection is formed. The method of claim 4,
The fixing elastic piece is a torque adjustment control device for an automatic wrench, characterized in that the locking release projection protruding to the outside protrudes. The method according to claim 2,
Casing outer peripheral surface of the electric wrench is provided with a mounting groove for mounting the wrench control body member,
Torque adjustment control device for an automatic wrench, characterized in that the projecting projection is inserted into the mounting groove on the inner surface of the first body portion and the second body portion. The method according to claim 2,
Mounting protrusions protrude around inner surfaces of the first body portion and the second body portion,
The casing outer circumferential surface of the electric wrench is a torque adjustment control device for an automatic wrench, characterized in that the mounting groove for inserting the mounting projection is formed. The method according to claim 2,
An anti-rotation protrusion protrudes from the inner surface of the first body portion and the second body portion, and the anti-rotation groove is formed in the electric wrench to insert the anti-rotation protrusion. The method according to claim 1,
Torque adjustment control device for an automatic wrench further comprises a motor control device provided in the electric wrench and controls the operation of the motor, and connected to the torque control device. The method according to claim 9,
The torque control device is provided on the inner surface of the wrench control body member and has a first connection terminal connected to the motor control device,
And the motor control device includes a second connection terminal provided on an outer circumferential surface of the electric wrench and connected to the first connection terminal. The method of claim 10,
The first connection terminal is a plurality of contact terminal pins protruding on the inner surface of the wrench control body member,
And the second connection terminal is a plurality of pin accommodation terminals having a terminal groove into which the contact terminal pin is inserted. The method according to claim 9,
The motor control device,
A power supply unit supplying power to the motor;
A motor control unit connected to the power supply unit and the motor to control operation of the motor;
A torque output unit connected to the motor control unit and the torque control device and configured to collect and transmit information so that the motor control unit outputs the torque selected by the torque control device; And
And a torque adjustment determining unit connected to the motor control unit and the torque control device to recognize the connection of the torque control device. The method of claim 12,
The torque control device,
A torque input unit for setting torque control;
A display unit for displaying the torque input to the torque input unit so as to be confirmed;
A torque control power supply unit connected to the power supply unit to receive power from the power supply unit;
A torque adjustment control unit connected to the torque output unit and the torque input unit, storing torque in stages, and transferring a torque stage selected from the torque input unit to the torque output unit; And
And a torque adjustment recognizing unit connected to the torque adjustment determining unit and the torque input unit and recognizing a connection with the torque adjustment determining unit to transmit information to the torque input unit. An electric wrench having a socket connected to the fastener at one side, a motor for rotating the socket inside the casing, and an operation control switch unit configured to supply and cut off power to the motor;
It is provided inside the casing of the electric wrench, and includes a motor control device for controlling the operation of the motor,
And the motor control device is capable of adjusting torque by a torque adjustment control device detachable from the casing of the electric wrench. The method according to claim 14,
The torque adjustment control device includes a wrench control body member detachable from the electric wrench; And
And a torque control device provided on the wrench control body member and connected to the motor of the electric wrench to control torque of the motor. The method according to claim 15,
The motor control device,
A power supply unit supplying power to the motor;
A motor control unit connected to the power supply unit and the motor to control operation of the motor;
A torque output unit connected to the motor control unit and the torque control device and configured to collect and transmit information so that the motor control unit outputs the torque selected by the torque control device; And
And a torque adjustment determining unit connected to the motor control unit and the torque control device to recognize the connection of the torque control device. 18. The method of claim 16,
The torque control device,
A torque control power supply unit connected to the power supply unit to receive power from the power supply unit;
A torque input unit for setting torque control; And a display unit for displaying the torque input to the torque input unit so as to be confirmed.
A torque adjustment control unit connected to the torque output unit and the torque input unit, storing torque in stages, and transferring a torque stage selected from the torque input unit to the torque output unit; And
And a torque adjustment recognizing unit connected to the torque adjustment determining unit and the torque input unit and recognizing a connection with the torque adjustment determining unit to transfer information to the torque input unit.

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