CN107053061A - Electric wrench determines torque force device - Google Patents

Abstract

Equipment technical field is filled the present invention relates to a kind of power ampere, more particularly to a kind of electric wrench determines torque force device.Including electric wrench body, determine the plug that torque force device and being fixedly arranged on determines torque force device front end, it is characterized in that the revolving force of electric wrench body interior motor is directly applied to determine torque force device, the plug is provided with concavo-convex neck, the outer surface of described one end of spanner pullover 4 is provided with concavo-convex neck, and the concavo-convex neck of the plug mutually coincide with the concavo-convex neck of spanner pullover.The present invention can not only provide big twisting resistance, and long-play, determine torque force device do not allow it is fragile.

Description

Electric wrench constant torque device

technical field

The invention relates to the technical field of electric installation equipment, in particular to an electric wrench constant torque device.

Background technique

Electric wrench is a high-efficiency mechanical tool for disassembling screws and nuts, and it has a wide range of uses in the electric power industry. In the machinery manufacturing industry, bolts and nuts are used the most besides individual parts on the assembly line. To a large extent, the quality of a product does not lie in the quality of each part, but in the quality of assembly.

Assembly workshops of large factories often use high-efficiency electric wrenches to tighten bolts, but only using the rotating shaft to provide rotating force, not only cannot provide large torsional force, but also the rotating shaft runs for a long time and is easily damaged.

Contents of the invention

The object of the present invention is to solve the above problems and provide a constant torque device for an electric wrench that can provide a large torsion force and is not easily damaged.

In order to solve the above problems, the present invention provides the following technical solutions:

The fixed torque device of the electric wrench includes the electric wrench body 1, the fixed torque device 2 and the plug 3 fixed on the front end of the fixed torque device 2. The fixed torque device 2 is provided with a ring groove 21, and the ring groove 21 is provided with There is a slide bar 22, the end of one end of the slide bar 22 extends into the keyhole 23 of the constant torque device 2, the part where the slide bar 22 extends into the keyhole 23 is an inclined plane, and the outside of the constant torque device 2 is designed There is an annular retaining wall 24, which is fixed on the electric wrench body 1, and an opening is provided on the annular retaining wall 24, and the other end of the slide rod 22 extends into the electric wrench body 1 and is connected with the electric wrench body 1. A first return spring 11 is provided between the inner walls of the electric wrench body 1, and a first tooth plate 25 is provided below the slide bar 22, and the first tooth plate 25 meshes with a gear 26, and the gear 26 is also meshed with a gear. There is a second toothed plate 27, a first magnet 28 is arranged on the second toothed plate 27, a magnet seat is arranged below the second toothed plate 27, a second magnet 29 is arranged in the described magnet seat, and the The opposite magnetic poles of the first magnet 28 and the second magnet 29 are the same, the below of the second magnet 29 is provided with a magnetic slide rail, and the magnetic slide rail is adsorbed on the second magnet 29, and the sliding arrangement in the magnetic slide rail is There is a gasket 30, the gasket 30 is provided with a limit hole 301, the bottom of the gasket 30 is provided with a baffle plate 31, one side of the gasket 30 is provided with a start switch, and the other side of the gasket 30 A start button is provided on one side, a limit rod 32 is provided on the baffle plate 31, and a second return spring 33 is provided between the gasket 30 and the baffle plate 31; the characteristic is the rotational force of the internal motor of the electric wrench body 1 Directly applied to the constant torque device, the plug 3 is provided with a concave-convex slot, and the outer surface of one end of the wrench glove 4 is provided with a concave-convex slot, and the concave-convex slot of the plug 3 matches the concave-convex slot of the wrench glove 4 .

The optimization of the present invention, according to the electric wrench constant torque device described above, is characterized in that when replacing the constant torque device 2, the operator inserts the key into the key hole 23 against the slope on the slide bar 22 so that the slide bar 22 moves toward the electric wrench body 1 The first toothed plate 25 on the slide bar 22 drives the gear 26 to rotate, the gear 26 drives the second toothed plate 27 to move, and the first magnet 28 on the second toothed plate 27 moves to the second toothed plate 27 along with the second toothed plate 27. At the upper position of the magnet 29, the second magnet 29 moves down under the action of the repulsive force of the magnet, thereby driving the spacer 30 to move down, the limit rod 32 is inserted into the limit hole 301, the spacer 30 is blocked so that the start button cannot be pressed, The operator pulls out the key after changing the fixed torque device 2, and the first return spring 11 pushes back one end of the slide bar 22 into the key hole 23, the first magnet 28 and the second magnet 29 are staggered, the magnet repulsion disappears, and the second return spring 33 to push the gasket 30 to move up until the limiting hole 301 disengages from the limiting rod 32 .

The optimization of the present invention, according to the electric wrench fixed torque device described above, is characterized in that the concave-convex grooves on the outer surface of the wrench glove 4 of each type are of the same size, and can be interlocked with the concave-convex grooves inside the plug 3 combine.

The beneficial effects of the present invention are: the rotational force of the motor is directly applied to the constant torque device, and the entire constant torque device rotates, thereby driving the plug to rotate, and the concave-convex slot inside the plug drives the wrench head to rotate, thereby realizing a large rotational torque; Drive the entire fixed torque device to apply rotational torque, so it should not be damaged; the operator often needs to replace the plug during operation, and the operator often replaces it directly without powering off the equipment. If he or others touch the switch by mistake during the replacement , starting the device is very dangerous.

Description of drawings

Fig. 1 is the structural representation of electric wrench constant torque device of the present invention;

Reference signs: electric wrench body-1, constant torque device-2, annular groove-21, slide bar-22, key hole-23, annular retaining wall-24, first tooth plate-25, gear-26, second Tooth plate-27, first magnet-28, second magnet-29, plug-3, spacer-30, limit hole-301, baffle plate-31, limit rod-32, second return spring-33, Wrench glove-4.

detailed description

In order to make the technical means, creative features, goals and effects of the present invention easy to understand, the present invention will be further described in conjunction with specific embodiments and accompanying drawings.

Please refer to the accompanying drawing 1 of the manual, the electric wrench fixed torque device includes the electric wrench body 1, the fixed torque device 2 and the plug 3 fixed on the front end of the fixed torque device 2, and the fixed torque device 2 is provided with a circle of annular groove 21, A slide bar 22 is provided in the annular groove 21, and the end of one end of the slide bar 22 extends into the key hole 23 of the fixed torque device 2, and the part where the slide bar 22 extends into the key hole 23 is an inclined plane. The fixed torque device 2 is provided with a circle of annular retaining wall 24 on the outside, and the annular retaining wall 24 is fixed on the electric wrench body 1. An opening is provided on the annular retaining wall 24, and the other end of the slide bar 22 extends to A first return spring 11 is provided in the electric wrench body 1 and between the inner wall of the electric wrench body 1, and a first tooth plate 25 is provided below the slide bar 22, and the first tooth plate 25 meshes with a gear 26, so The gear 26 is also meshed with a second toothed plate 27, the second toothed plate 27 is provided with a first magnet 28, the second toothed plate 27 is provided with a magnet seat, and the magnet seat is provided with The second magnet 29, the opposite magnetic poles of the first magnet 28 and the second magnet 29 are the same, the second magnet 29 is provided with a magnetic slide rail, and the magnetic slide rail is adsorbed on the second magnet 29, so A gasket 30 is provided for sliding in the magnetic slide rail, and a limit hole 301 is provided on the gasket 30. A baffle plate 31 is provided below the gasket 30. A start switch is provided on one side of the gasket 30. The other side of the gasket 30 is provided with a start button, the baffle 31 is provided with a limit rod 32, and a second return spring 33 is arranged between the gasket 30 and the baffle 31; the inside of the electric wrench body 1 The rotational force of the motor is directly applied to the constant torque device. The plug 3 is provided with a concave-convex groove, and the outer surface of one end of the wrench glove 4 is provided with a concave-convex groove. The card slots match each other.

The beneficial effects of the present invention are: the rotational force of the motor is directly applied to the constant torque device, and the entire constant torque device rotates, thereby driving the plug to rotate, and the concave-convex slot inside the plug drives the wrench head to rotate, thereby realizing a large rotational torque; Drive the entire fixed torque device to apply rotational torque, so it should not be damaged; the operator often needs to replace the plug during operation, and the operator often replaces it directly without powering off the equipment. If he or others touch the switch by mistake during the replacement , starting the device is very dangerous.

In the optimization of the present invention, when replacing the constant torque device 2, the operator inserts the key into the key hole 23 against the slope on the slide bar 22 so that the slide bar 22 moves into the electric wrench body 1, and the first tooth plate 25 on the slide bar 22 drives The gear 26 rotates, and the gear 26 drives the second toothed plate 27 to move. The first magnet 28 on the second toothed plate 27 moves to the upper position of the second magnet 29 along with the second toothed plate 27. The magnet 29 moves down and drives the spacer 30 to move down, the limit rod 32 is inserted into the limit hole 301, the spacer 30 is stuck so that the start button cannot be pressed, the operator pulls out the key after replacing the constant torque device 2, and the second A return spring 11 pushes one end of the slide bar 22 back into the key hole 23, the first magnet 28 and the second magnet 29 are staggered, the magnet repulsion disappears, and the second return spring 33 pushes the pad 30 to move upward until the limit hole 301 breaks away from the limit. Bit pole 32. After adopting the above-mentioned structure, even if the operator replaces the constant torque device under the condition that the equipment is not powered off, accidental danger will not occur.

Further, the concave-convex grooves on the outer surface of one end of each type of wrench glove 4 are of the same size, and can be engaged with the concave-convex grooves inside the plug 3 . This structure makes the plug suitable for various types of wrench heads, and it is not necessary to replace different plugs according to the type of wrench heads.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and the descriptions in the above-mentioned embodiments and specification are only preferred examples of the present invention, and the present invention is not limited by the above-mentioned preferred examples, without departing from the present invention Under the premise of the spirit and scope, the present invention can also have various changes and improvements, and these changes and improvements all fall within the scope of protection of the present invention.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (3)

1. electric wrench determines torque force device, including electric wrench body (1), determine torque force device (2) and be fixedly arranged on to determine torque force device (2) plug (3) of front end, it is described to determine to be provided with torque force device (2) in a ring annular groove (21), the annular groove (21) provided with cunning Bar (22), the end of described slide bar (22) one end is extended in the keyhole (23) for determining torque force device (2), and the slide bar (22) is stretched into The part of keyhole (23) is inclined-plane, described to determine torque force device (2) exterior measuring provided with a ring shape shelves wall (24), the annular shelves wall (24) be fixed on electric wrench body (1), the annular shelves wall (24) provided with one opening, the slide bar (22) it is another End extends in electric wrench body (1) and (the first back-moving spring (11) is provided between the inwall of electric wrench body (1), The lower section of the slide bar (22) is provided with the first tooth plate (25), the first tooth plate (25) meshing gear (26), the gear (26) On also mesh with provided with the second tooth plate (27), second tooth plate (27) is provided with the first magnet (28), second tooth plate (27) Lower section be provided with magnetic receiver, the second magnet (29), first magnet (28) and the second magnet (29) are provided with the magnetic receiver Opposite face magnetic pole it is identical, the lower section of second magnet (29) is provided with magnetic slide rail, and the magnetic slide rail absorption is in the second magnetic Slided on iron (29), in the magnetic slide rail and be provided with pad (30), the pad (30) is provided with spacing hole (301), the pad The lower section of piece (30) is provided with baffle plate (31), and the side of the pad (30) is provided with starting switch, the opposite side of the pad (30) Provided with start button, the baffle plate (31) is provided with gag lever post (32), and second is provided between the pad (30) and baffle plate (31) Back-moving spring (33)；It is characterized in that the revolving force of electric wrench body (1) motor internal is directly applied to determine torque force device, it is described Plug (3) is provided with concavo-convex neck, and the outer surface of described spanner pullover (4) one end is provided with concavo-convex neck, the bumps of the plug (3) The concavo-convex neck of neck and spanner pullover (4) mutually coincide.

2. electric wrench according to claim 1 determines torque force device, operator during torque force device (2) is determined it is characterized in that changing Key is inserted keyhole (23) and leans inclined-plane on slide bar (22) so that slide bar (22) is toward moving in electric wrench body (1), The first tooth plate (25) drive gear (26) on slide bar (22) is rotated, and gear (26) drives the second tooth plate (27) mobile, the second tooth The first magnet (28) on plate (27) is moved to the top position of the second magnet (29) with the second tooth plate (27), in magnet repulsion In the presence of the second magnet (29) move down and then moved down with mobile gasket (30), in gag lever post (32) insertion spacing hole (301), pad (30) it is stuck so that start button can not be pressed, operator, which finishes changing, to be determined torque force device (2) and extract key afterwards, and first resets Spring (11) pushes back one end of slide bar (22) in keyhole (23), and the first magnet (28) staggers with the second magnet (29), magnet Repulsion disappears, and second back-moving spring (33) promotes pad (30) to move up until spacing hole (301) departs from gag lever post (32).

3. electric wrench according to claim 1 determines torque force device, it is characterized in that the spanner pullover (4) of each model The concavo-convex neck size of one end outer surface is consistent, and concavo-convex neck that can be internal with plug (3) is interlocked.