KR200190365Y1 - Rechargeable electric drive - Google Patents

Abstract

[Technical Field]

The present invention relates to a driver.

A screwdriver is usually used to loosen and tighten a bolt or screw of a straight (-) or cross (+) type, and is divided into manual and electric.

In addition, there are two types of electric motors, which are directly connected to a power source and used while charging and carrying a rechargeable battery (battery).

The present invention relates to a rechargeable dedicated driver, the conventional rechargeable electric driver is unnecessarily wasted a lot of power according to the conditions of use, while the size and weight of the portable, but too inconvenient to carry around, the role of a manual driver is impossible In addition, I always had to carry a manual drive with me.

Therefore, the inventor of the present invention is a manual and electric screwdriver used in a place where the load is relatively light, and it is easy to carry with the smallest and the lightest. Its purpose is to develop.

Description

Rechargeable Electric Drive {.}

The present invention relates to a portable rechargeable electric screwdriver, and more specifically, it can be said to be a manual electric powered rechargeable electric screwdriver having a fp ratchet function.

The advantage of the rechargeable electric screwdriver is that it can be used whenever it is necessary to carry the battery by charging it with electricity. However, the purpose of the portable is to be limited in size and weight.

For this reason, the current type of GUN-type rechargeable electric screwdriver is used, but its size, weight and shape are not small enough to be easily carried by a worker.

In addition, the conventional rechargeable electric screwdriver is a lot of power and weight, so that you can waste a lot of power and manpower without the need for assembling or disassembling small parts, for example, When you receive A / S, you can see the A / S engineers carry the conventional rechargeable electric screwdriver, which is a waste of power and manpower in assembling and disassembling the actual electronic parts and household goods. In addition, a general GUN-type rechargeable electric driver cannot move easily between complicated electronic components, and fine adjustments such as the adjustment of a variable resistor (electronic component that can arbitrarily adjust the resistance of electricity) and the frequency of radio waves are performed. Is not possible with a conventional pistol-type rechargeable electric screwdriver, I could see it adjusting.

And deep in the electronics is dark and difficult to see, so it is often seen in the light of a flashlight or a desk lamp.

And assembling of general electronics consists almost of screws, and due to the characteristics of screws, they are loaded at the final stage of assembly, when they are disassembled, they are loaded at the initial stage of disassembly. Since the manpower is used only at the last stage, it is possible to work with only a small amount of force, so the inventor connects the transmission to the small motor and uses the ratchet device to collect the advantages of manual and electric power. It led to development.

A motorized screwdriver with a ratchet device has already been filed (electric screwdriver, Application Nos. 82-1100, Publication No. 86-1079), although the purpose of this screwdriver was a pocket-sized portable, but in reality its construction This is too complicated and can not be large, but the number of parts in the real production in terms of manufacturing cost and size and weight can be said that there are more disadvantages than the conventional rechargeable electric screwdriver than the conventional.

The purpose of the handheld product is the smallest, lightest, simple device that can achieve the purpose of deprivation, and there is no failure rate because of the simple device.

In consideration of this point, the present invention is very compact and easy to carry,

It is possible to work in a small space and to reduce the manufacturing cost with the smallest parts, while devising a manual, exclusive and combined rechargeable electric screwdriver which is easy to work even in the dark by installing the light emitting device. The above is as follows.

1 is a cross-sectional view cut a part of the present invention

2 is an operation example showing a specific function of the present invention

3 is a view showing a combination of some parts of the present invention, the upper side of the plan view, the front side and the lower side view (same as the right side view)

※ Explanation of Major Codes in Drawings

1 body 2 handle 3 countersunk screw 4 selection switch

4-a, 4-b: Both jaws of selector switch 4: Bundle of keys

5-a: Key 6 of the key block 5: Rotating body 6-a: External gear of the rotating body 6

7 driver bit 8 support 9 thick wire 10 fine wire

11 motor 12 transmission 13 output shaft 14 spring

15 Light Emitter 16 ON-OFF Switch 17 Rechargeable Battery

18: power connection port 19: bearing 20: button switch (buttenswich)

First, the first view is a cross-sectional view of a portion of the present invention, the handle (2) protruding on the main body (1) has a countersunk head screw (3) with the selection switch (4) and the interior of the selection switch (4) In the center, a round rod-shaped key bundle 5 with a key (5-a) protruding for the ratchet device is penetrated by a steel wire 9 of a suitable thickness to be combined with the support 8. Underneath it is a thin wire (10) acting as a spring is sewn to the depth of the key (5) in the support (8). These two wires (9, 10) is coupled to the key bundle 5 is a little loose to the left, right flow freely, the combination of the key bundle 5 and the support (8) is shown in FIG. have. The role of the support 8 is to support the key bundle 5 not to move along when the selector switch 4 moves forward and backward, and a part of the support 8 is also selected together with the key bundle 5. It is built in the switch 4.

And the front of the light emitting body 15 is installed in a dark place to facilitate the operation, underneath it has an external gear (6-a) and connected to the output shaft 13 of the transmission 12 so that the four angles to rotate Groove The rotating body 6 having the bearing is mounted in the main body 1 by the bearing 19, and the motor 11, the rechargeable battery 17, the power connector 18, and the ON-OFF switch 16 for light emission. And it is composed of a button switch 20 for driving the motor.

2 is an exemplary view showing the operation of the key bundle 5 and the key 5-a according to the operation of the selection switch 4, and FIG. 3 shows the combination of the support 8 and the key bundle 5. As the drawings above, the top view in the middle is the front view and the bottom view in the side view (same as left and right).

[Operation of design]

First, in the drawing of FIG. 1, since the selector switch 4 is located in the middle, the current position is as shown in the upper plan view of FIG. 2, and the keys 5-a of the key bundle 5 are both jaws of the selector switch 4. As it is interposed between (4-a, 4-b), it is in the state of floating point and currently functions as a manual driver.

Then, when the user wants to assemble the product by electric movement, grasping the main body (1) by hand and pushing the knob (2) forward with the thumb, the countersunk screw (3) causes the knob (2) and the selection switch (4) Is moved forward, and as a result of the movement, the key 5-a of the key 5 is moved from the left jaw (4-a, 4-b) of the selector switch 4 as shown below in FIG. In 4-a), they continue to receive but the right jaw (4-b) is released.

That is, as shown in the bottom front view of FIG. 2, the key 5a of the key bundle 5 is supported by the left jaw 4a of the selection swivel 4 and cannot move to the left side. This means that it is possible to move only, which means that the rotating body 6 having the external gear 6-a is rotated right by the interference of the key 5-a but can be seen that the left is impossible.

In other words, the user assembles the product by turning the driver bit 7 right.

On the contrary, if the user tries to turn the driver bit 7 to the left, pull the selector switch 4, and the key 5a of the key bundle 5 is supported by the right jaw 4-b of the selector switch 4. The brace is released from the left jaw (4-a) and the rotor 6 is allowed to turn left.

And in Figure 2 it can be seen that the selector switch 4 moves but the key bundle 5 is in place, which in principle serves as a support (8) to prevent the movement of the key bundle (5) As shown in FIG. 2, the drawings are separately described as the drawings become complicated, and thus the drawings are omitted. The role of the support 8 will now be described. First, Figure 3 shows the coupling of the support (8) and the key bundle (5) is shown from top to bottom in top view, front view, side view (left, right unified) and the shape of the support (8) As shown, it is a flat plate of approximate tracer type (a), and is stitched with iron wire (9) of appropriate thickness, and is joined at the left and right sides of the key bundle (5), and the key bundle (5) is a rotating body (6). It should be loosely coupled so that it can move left and right easily by external gear (6-a) of).

And another iron wire underneath it is inserted into the support (8) with a suitable depth with respect to the key bundle (5), its role is that the key (5-a) of the key bundle (5) is the rotating body (6) When the angle is changed by contact with the external gear (6-a), it acts as a spring of the ratchet device, which restores the angle to the elasticity peculiar to the wire, which should also be loosely inserted into the key bundle (5). .

The key bundle 5 and the support 8 coupled as described above are in the middle part of the selector switch 4 such that both ends of the support 8 come into contact with the main body 1 as shown in FIG. 1. Even if the selection switch 4 is inserted and moved back and forth, the key bundle 5 is always in place.

In this way, when the user grabs the main body 1 and pushes the handle 2 forward, the selector switch 4 connected with the handle 2 and the countersunk head screw 3 moves forward and thus both jaws of the selector switch 4 The key (5-a) of the key bundle (5) inserted in (4-a, 4-b) is released from the right jaw (4-b) of the selector switch 4, and at the same time the main body (1) The button switch 20 coalesced in) is pressed by the selector switch 4 so that the motor 11 rotates in a predetermined direction, and this rotational force is appropriately shifted via the transmission 12 to rotate the output shaft 13. Four grooves ( By rotating the rotating body 6 is connected to the output shaft 13, the drive bit 7 therein also rotates.

In general, when the screw is turned to the right, the product is assembled and the product is assembled. When the screw is turned to the left, the product is retracted and disassembled. Therefore, when the knob (2) is moved forward, the driver bit is turned right. When the knob (2) is retracted, the driver bit is turned left. When the switch 20 and the motor 11 are electrically connected to each other and the driver bit is moved to the screw and the handle 2 is advanced, the screw turns right and the product is assembled.

At first, the screw, which was rotated at almost no load, was subjected to a large load when the end point of the assembly was reached, and the motor 11 was stopped. At that time, if the user rotated the driver body 1 a little more with manpower, The work of assembly is completed.

Thereafter, when the thumb, which advances the handle 2 of the main body 1, is removed from the handle 2, the handle 2 returns to the neutral position by the force of the compression spring 14, and the electrical connection is also cut off. 11) also stops driving. On the contrary, when disassembling the assembled product, first loosen the screw tightly tightened with manpower while the selector switch 2 is neutral, and then retract the handle 2 with the thumb, and the driver bit 7 is turned left. Dismantling of the product takes place.

The external shape of the driver bit 7 is a rectangular shape that is generally used, and the exchange of the date (-) and the cross (+) can be performed by simply pulling it out of the rotating body (6) and inserting it. 1) Remove and carry. Reference numeral 15 denotes a light emitter and emits light through a switch 16 at the rear of the driver, so that the operation is easy even in a dark place, reference numeral 17 denotes a rechargeable battery, 18 denotes a power connection port, and 19 denotes a bearing.

The rechargeable electric screwdriver of the present invention has the functions of the general manual screwdriver and the electric screwdriver, thereby eliminating the inconvenience of carrying two types of manual and electric screwdrivers as in the prior art. It is possible to work in the dark place by attaching a light emitting device, and above all, it can be manufactured in a very small size and light weight due to the simplification of parts, and it is easy to carry and can be supplied at a low price. .

Claims (1)

In the cordless electric screwdriver, it can usually be used as a manual screwdriver. As the knob 2 is moved forward and backward as necessary, the selected switch 4, which is installed therein, moves forward and backward, so that the selector switch 4 The key 5-a of the internal key bundle 5 is selectively released from both jaws 4-a and 4-b of the selector switch 4, which has been restrained, so that the external gear of the rotating body 6 ( It has a kind of ratcheting device for 6-a, and at the same time, presses the button switch 20 to rotate the motor 11 and the rotational power is appropriately shifted via the transmission 12 so that the driver bit 7 is mounted. A charge-type electric screwdriver, which is converted into electric power by rotating the rotating body 6, and has a flat (-) type in principle, in which a light emitting body 15 is attached to facilitate work even in a dark place.