KR102521199B1 - A tongs spanner device for hand grinder - Google Patents

Abstract

The present invention relates to a tongs spanner device for a hand grinder, a main body configured in the form of U-shaped tongs and having a distance controlled by a gripping force, a coupling protrusion formed by vertically bending a front end of the main body, and an end of the coupling protrusion. It includes a driver provided in. Therefore, according to the present invention, the spanner interval can be easily adjusted according to the position of the coupling hole on both sides of the blade fixing plate of the grinder and can be used as a screwdriver, thereby increasing convenience and utilization.

Description

Tongs spanner device for hand grinder {A TONGS SPANNER DEVICE FOR HAND GRINDER}

The present invention relates to a spanner for a hand grinder, and more particularly, tongs spanner device for a hand grinder configured in the form of a U-shaped tongs and capable of loosening and tightening blade fixing nuts of grinders of various sizes by adjusting the distance by gripping force. It is about.

As is well known, a conventional hand grinder is used for smoothing a rough surface of a processed part or a part to be painted, or for partially cutting raw materials such as pipes, angles, steel plates, and the like.

That is, the hand grinder operates the rotating shaft at high speed by air pressure generated by an electric motor drive or operation of a compressor, and at the same time grinds the unprocessed part, corner, etc. by grinding the surface of the object using a consumable disk. Carrying out or cutting work.

In the case of the disc, since the grindstone or sandpaper is attached to the surface to be cut and easily consumed, it must be replaced frequently while a large amount of discs are provided.

As a structure for mounting the disk in such a hand grinder, a method is used to fix the disk by inserting it into the rotating shaft mounted in the grinder body and then fixing it using a nut or by fastening a bolt to the rotating shaft so that the disk is fixed. are doing At this time, a tool such as a spanner or wrench is used.

In general, a spanner is a wrench that is designed to hold and turn only two sides of a bolt or nut, and a wrench that applies force by covering all six sides is called a spanner and a wrench.

1 is an exemplary view showing a spanner for a grinder that is generally used in the related art.

Referring to FIG. 1, since the general spanner 10 for a grinder is configured in a form in which the front end of a main body composed of a steel plate having a thickness of about 1.5 to 2 mm is bent and separated into both sides to have a fixed width, the size of the grinder for each manufacturer and the size of the grinder As the fixed width of the blade was different, there was an inconvenience of having to use only a spanner suitable for that width.

Accordingly, a prior art related to a spanner for a grinder capable of adjusting the width has recently been proposed.

As an example, Korea Utility Model Registration No. 20-0460330 (May 8, 2012) relates to a spanner for a disk grinder, and a concave-convex part is formed at a contact part where a fixing part and a rotating part come into contact with a fixing bolt as an axis. Make contact so that it does not slide easily, and the synthetic resin cap is integrally injection-molded on the outer surface of the head of the fixing bolt, and the lower bent part of the synthetic resin cap is located on the bottom of the head of the fixing bolt to separate from the head of the fixing bolt. At the same time, the bent part is configured lower than the lower end of the locking jaw of the fixing bolt, so that the spring washer does not come into contact with the bent part of the synthetic resin cap when the fixing bolt is tightened. Disclosed is a spanner for a disc grinder that can be firmly fixed and installed between rotations using a fixing bolt on the top.

However, in the case of a spanner for a grinder whose width can be adjusted in the prior art, there was the inconvenience of adjusting the range of use by setting the rotation rod placed on the rod to a desired position using a fixing bolt and then tightening and fixing it. There is a disadvantage that it becomes complicated and the manufacturing cost rises.

Korea Registered Utility Model No. 20-0460330 (May 8, 2012)

One embodiment of the present invention is to provide a tongs spanner device for hand grinders configured in the form of U-shaped tongs and having intervals adjusted by gripping force to loosen and tighten blade fixing nuts of grinders of various sizes.

One embodiment of the present invention is to provide a tongs spanner device for a hand grinder in which one side of the tongs-shaped spanner is composed of a hexagonal screwdriver and the other side is a cross-head screwdriver to increase convenience and utilization of the screwdriver.

Among the embodiments, a claw spanner device for a hand grinder includes a main body configured in the form of a U-shaped tong and having a distance adjusted by a gripping force, and a coupling protrusion formed by vertically bending a front end of the main body.

The main body may include a bent connecting portion bent in an arc shape, and a pair of first and second handle portions each extending from both ends of the bent connecting portion and connected to be disposed parallel to each other.

When an external force is applied while the user grips both sides of the first and second handles, they come closer to each other toward the ends, the width is adjusted, and when the external force is removed, they return to their original positions and can be placed side by side with each other.

The coupling protrusion may include a pair of first and second coupling rods provided at ends of the first and second handle portions and protruding downward to be inserted into coupling holes on both sides of the blade fixing plate of the grinder.

Among the embodiments, the claw spanner device for a hand grinder may further include a screwdriver part which is provided at the ends of the first and second coupling rods and is a bolt tightening tool for fastening the safety cover to the grinder.

In the driver unit, a hexagonal or cross-shaped driver tip may be extended to the ends of the first and second coupling rods to form a hexagonal or cross-shaped screwdriver.

The driver unit has a hexagonal driver tip extended to one coupling rod of the first and second coupling rods to form a hexagonal driver, and a cross-shaped driver tip to the other coupling rod is extended to form a cross driver can be configured.

The disclosed technology may have the following effects. However, it does not mean that a specific embodiment must include all of the following effects or only the following effects, so it should not be understood that the scope of rights of the disclosed technology is limited thereby.

Tongs spanner device for hand grinder according to an embodiment of the present invention is configured in the form of U-shaped tongs, and the spacing is adjusted by gripping force to loosen and tighten blade fixing nuts of grinders of various sizes.

In the tongs spanner device for hand grinder according to an embodiment of the present invention, one side of the tongs-shaped spanner is composed of a hexagonal screwdriver and the other side is a cross-head screwdriver, so that the convenience of use and utilization can be increased by serving as a screwdriver.

1 is an exemplary view showing a spanner for a grinder that is generally used in the related art.
2 is a perspective view showing a clamp spanner device for a hand grinder according to an embodiment of the present invention.
Figure 3 is a bottom perspective view showing the clamp spanner device for the hand grinder shown in Figure 2;
4a-4b is a perspective view showing a portion of the clamp spanner device for the hand grinder in FIG. 3;
5 is a view showing a state of adjusting the width of the clamp spanner device for a hand grinder according to the present invention.
6 is a view showing a state of use of the clamp spanner device for a hand grinder according to the present invention.
7 is an exemplary view showing a driver use state of a clamp spanner device for a hand grinder according to an embodiment.

Since the description of the present invention is only an embodiment for structural or functional description, the scope of the present invention should not be construed as being limited by the embodiments described in the text. That is, since the embodiment can be changed in various ways and can have various forms, it should be understood that the scope of the present invention includes equivalents capable of realizing the technical idea. In addition, since the object or effect presented in the present invention does not mean that a specific embodiment should include all of them or only such effects, the scope of the present invention should not be construed as being limited thereto.

Meanwhile, the meaning of terms described in this application should be understood as follows.

Terms such as "first" and "second" are used to distinguish one component from another, and the scope of rights should not be limited by these terms. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element.

It should be understood that when an element is referred to as being “connected” to another element, it may be directly connected to the other element, but other elements may exist in the middle. On the other hand, when an element is referred to as being "directly connected" to another element, it should be understood that no intervening elements exist. Meanwhile, other expressions describing the relationship between components, such as “between” and “immediately between” or “adjacent to” and “directly adjacent to” should be interpreted similarly.

Expressions in the singular number should be understood to include plural expressions unless the context clearly dictates otherwise, and terms such as “comprise” or “having” refer to an embodied feature, number, step, operation, component, part, or these. It should be understood that it is intended to indicate that a combination exists, and does not preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

In each step, the identification code (eg, a, b, c, etc.) is used for convenience of explanation, and the identification code does not describe the order of each step, and each step clearly follows a specific order in context. Unless otherwise specified, it may occur in a different order than specified. That is, each step may occur in the same order as specified, may be performed substantially simultaneously, or may be performed in the reverse order.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless defined otherwise. Terms defined in commonly used dictionaries should be interpreted as consistent with meanings in the context of the related art, and cannot be interpreted as having ideal or excessively formal meanings unless explicitly defined in the present application.

Figure 2 is a perspective view showing a clamp spanner device for a hand grinder according to an embodiment of the present invention, Figure 3 is a bottom perspective view showing a clamp spanner device for a hand grinder in FIG. 2, Figures 4a and 4b are in FIG. It is a perspective view showing a part of a clamp spanner device for a hand grinder.

Referring to FIGS. 2 to 4B , the clamp spanner device 100 for a hand grinder may include a main body 110 , a coupling protrusion 130 and a driver unit 150 .

The body 110 includes a bent connecting portion 111 bent in an arc shape, and a pair of first and second handle portions 113a and 113b extending from both ends of the bent connecting portion 111 and connected to be disposed parallel to each other. can do. Coupling protrusions 130 may be provided at ends of the first and second handle parts 113a and 113b. In one embodiment, the main body 110 may be made of a metal material and may be configured in the shape of an approximate U-shaped tongs. Here, the use range of the body 110 may be varied by a gripping force for gripping the first and second handle parts 113a and 113b. That is, the first and second handles 113a and 113b are easy to grip, and the width can be adjusted by being close to each other and spaced apart by a gripping force.

In one embodiment, the main body 110 may determine the distance and length between the first and second handle parts 113a and 113b so that the width can be adjusted so that it can be used as a spanner regardless of the size of the grind blade. That is, it can be said that the adjustable width range of the main body 110 is proportional to the magnitude and length of the external force (gripping force) applied to the first and second handle parts 113a and 113b and is inversely proportional to the cross-sectional area. For example, the distance between the first and second handle parts 113a and 113b may be approximately 15 mm, and the length may be approximately 150 mm.

The coupling protrusion 130 may be formed by vertically bending each end of the pair of first and second handle portions 113a and 113b. Here, the coupling protrusion 130 is provided at the ends of the first and second handle portions 113a and 113b and a pair of first and second protruding downwards so as to be fitted into coupling holes on both sides of the blade fixing plate of the grinder. Coupling rods 131a and 131b may be included. The first and second coupling rods 131a and 131b may be formed to have a length of approximately 7 to 10 mm and may be formed in a shape corresponding to the shape of coupling holes on both sides of the blade fixing plate of the grinder. In one embodiment, the first and second coupling rods 131a and 131b of the coupling protrusion 130 are spaced through the first and second handle portions 113a and 113b to match the positions of the coupling holes on both sides of the fixing plate configured in the grinder. It can be adjusted and fitted into the coupling hole to perform the function of a spanner that can tighten or loosen the fixing plate.

The driver unit 150 extends from the end of the coupling protrusion 130 and includes a hexagonal and/or cross-shaped driver tip. In one embodiment, as shown in FIG. 4A , the driver unit 150 may be configured as a hexagonal driver by extending hexagonal driver tips 151 on both sides of the coupling protrusion 130 . In one embodiment, as shown in FIG. 4B, the driver unit 150 may be configured as a Phillips screwdriver by extending a cross-shaped driver tip 153 to the first coupling rod 131a of the coupling protrusion 130. And the driver tip 151 of the hexagonal shape is extended to the second coupling bar 131b, so that it may be configured as a hexagonal driver. The driver unit 150 is not limited thereto and may be configured as a cross-shaped screwdriver by extending cross-shaped driver tips on both sides.

Here, the main body 110, the coupling protrusion 130, and the driver unit 150 may be formed by being cast in a form integrally coupled with a metal material. It is not limited thereto, but it is also possible to connect the driver part 150 to the coupling protrusion 130 by welding.

5 is a view showing a state of adjusting the width of the clamp spanner device for a hand grinder according to the present invention.

Referring to FIG. 5, the user holds the first and second handle parts 113a and 113b of the main body 110 on both sides as shown in (a), on the first and second handle parts 113a and 113b. When an external force is applied, the first and second handle portions 113a and 113b come closer to each other toward the end, as shown in (b), so that the width can be adjusted. The first and second handle parts 113a and 113b may be connected and supported by the bend connection part 111 and return to their original positions when the external force applied to the first and second handle parts 113a and 113b is removed by the user. are placed next to each other.

6 is a view showing a state of use of the clamp spanner device for a hand grinder according to the present invention.

Referring to FIG. 6 , the disk grinder 230 is fitted on the rotating shaft rod 210 configured in the hand grinder 200, and the fixing plate 250 is screwed into the threaded portion of the rotating shaft rod 210. Then, in a state in which the first and second handle portions 113a and 113b of the hand grinder clamp spanner device 100 according to the present invention are gripped, both sides of the fixing plate 250 configured in the hand grinder 200 have coupling holes ( 251) By adjusting the distance between the first and second handle parts 113a and 113b according to the position, the coupling protrusion 130 formed by vertically bending the ends of the first and second handle parts 113a and 113b is a coupling hole. (251). Then, the disk grinder 230 can be firmly fastened to the rotating shaft rod 210 of the hand grinder 200 by tightening the fixing plate 250 in a state where the coupling protrusion 130 is fitted into the coupling hole 251. .

7 is an exemplary view showing a driver use state of a clamp spanner device for a hand grinder according to an embodiment.

Referring to FIG. 7 , the hand grinder 200 is used with a safety cover 300 installed for safety during operation. The safety cover 300 prevents a worker from risk of injury or work hazard by generating sparks or dust due to friction between the polishing wheel and the workpiece when processing a metal workpiece, and a worker who grips the hand grinder 200 during work. This is to prevent injuries caused by the polishing wheel when a worker is careless, since a certain gripping force is generated in the hand of the operator.

The safety cover 300 has a front protection plate 330 that protrudes a certain amount on the outer circumference of the arc-shaped plate-shaped side protection plate 310 having a certain angle, and the rotation shaft rod of the hand grinder 200 at the center of the side protection plate 310 ( 210) is formed with a ring-shaped fastening part 350, which is attached to the rotating shaft rod 210 of the hand grinder 200 by the fastening part 350, and is attached to the side protection plate 310 and the front protection plate 330. It is possible to prevent workers' injuries due to sparks generated from the side or front part during work, and to prevent work hazards due to the dispersion of dust. This is to prevent safety accidents.

The binding part 350 is composed of a conventional metal ring shape, and is fixed to the rotating shaft rod 210 of the hand grinder 200 by tightening the bolt 370. At this time, tongs for hand grinder according to an embodiment The bolt 370 may be conveniently tightened using the driver 150 of the spanner device 100 . For example, when the bolt 370 is a cross head bolt, the tip 153 of the screw driver 150 may be used, and when the bolt 370 is a hexagon wrench bolt, the tip 151 of a hexagonal screwdriver may be used.

The angle of the safety cover 300 needs to be adjusted according to the direction of the spark, the direction of dust generation, and the gripping direction of the operator when processing the workpiece. Even at this time, the work can be performed smoothly by using the driver 150 of the tongs spanner device 100 for a hand grinder according to an embodiment to simply release the bolt 370, adjust the angle, and then fix it again.

Therefore, the clamp spanner device 100 for a hand grinder according to an embodiment is used as a screwdriver for tightening bolts when the safety cover 300 is mounted on and fixed to the hand grinder 200, and the hand grinder 200 is used as an abrasive wheel. That is, when the disk grinder 230 is mounted and fixed, it can be used as a spanner for tightening the fixing plate and can also be used when loosening the tightening.

As described above, in the gripper spanner device for hand grinder according to an embodiment of the present invention, since the main body of the spanner for grinder is configured in the form of pincers, gripping is easy and the width of the gripper can be adjusted, so that it can be used regardless of the size of the blade of the grinder. It can be used as a hexagonal and/or cross-shaped screwdriver by constructing a hexagonal and/or cross-shaped stone bar protruding downward at the tip, so that it is not necessary to have different types of necessary tools, so the convenience and utilization of use can be increased.

Although the above has been described with reference to preferred embodiments of the present invention, those skilled in the art will variously modify and change the present invention within the scope not departing from the spirit and scope of the present invention described in the claims below. You will understand that it can be done.

100: tongs spanner device for hand grinder
110: body
111: bending connection parts 113a, 113b: first and second handle parts
130: coupling protrusions 131a, 131b: first and second coupling rods
150: driver unit
151: hexagon screwdriver tip 153: Phillips screwdriver tip
200: hand grinder
210: rotating shaft rod 230: disc grinder
250: fixed plate 251: coupling hole
300: safety cover
310: side protection plate 330: front protection plate
350: attachment part 370: bolt

Claims (7)

It includes a bent connection part bent in an arc shape and a pair of first and second handle parts extending from both ends of the bend connection part and connected to be arranged side by side, and a gap is formed by a gripping force for gripping the first and second handle parts. A main body configured in the form of U-shaped forceps that is adjusted and the range of use is variable; and
Including a coupling protrusion formed by bending vertically at the front end of the main body at each end of the first and second handle parts,
The first and second handle parts
The distance between them is 15 mm and the length is 150 mm. When an external force is applied while the user is gripping both sides, they come closer to each other toward the end. It is returned to its position and placed side by side with each other,
The coupling protrusion
A pair provided at the ends of the first and second handles and protruding downward in a length of 7 to 10 mm to perform a spanner function by being fitted into the coupling holes on both sides and formed in a shape corresponding to the shape of the coupling holes on both sides Including the first and second coupling rods of,
Hexagonal or cross-shaped driver tips are attached to the ends of the first and second coupling rods, respectively. Clamp spanner device for a hand grinder, characterized in that it also functions as a driver for tightening and releasing the bolts of the grinder, including a driver part that is extended or connected by welding.
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