KR101685382B1

KR101685382B1 - Open type gear spanner

Info

Publication number: KR101685382B1
Application number: KR1020150174618A
Authority: KR
Inventors: 박진; 우성현; 임종민; 은희광; 전종협; 조창래; 문남진; 문귀원
Original assignee: 한국항공우주연구원
Priority date: 2015-12-09
Filing date: 2015-12-09
Publication date: 2016-12-28

Abstract

The open gear spanner according to the present invention includes a bar type handle 100 fixed to one end of the handle 100 and having an internal space 210 in a hollow form, A head portion 200 including an insertion space 220 to be inserted and an opening surface in which a part of a surface abutting the nut 20 is opened; A belt 300 protruding outwardly and abutting against the nut 20 and continuously forming teeth 310 on the inner side thereof, a gear wheel 400 rotating in engagement with the teeth 310, 210 to rotate the belt 300 in only one direction.

Description

Open type gear spanner

The present invention relates to an open type gear spanner, and more particularly to an open type gear wrench that can be tightened or loosened with a nut inserted into a head of a wrench with one side thereof opened and without removing a wrench from the nut.

A wrench is a tool used to tighten or loosen a nut, also known as a wrench in the United States. Normally, the wrench is divided into an opening spanner and a closing spanner. The opening spanner is open at one side, and a space through which the nut is inserted is opened in a C-shape. The closing spanner is a case where the space in which the nut is inserted is closed in an O- It says. Since bolts and nuts were invented in the 16th century and spread all over the world, spanners that can tighten nuts have been developed in various forms, one of which is Korean Patent No. 10-20703144 ("Spanner" , Hereinafter referred to as prior art 1). Prior Art 1 relates to a spanner. More specifically, Prior Art 1 is a closure spanner described above, which rotates only in one direction when tightening or loosening a nut, thereby facilitating the user's convenience.

The prior art 1 has an advantage that the operator can easily tighten or loosen the nut when the operator reciprocates the knob while inserting the nut to tighten the nut. However, since the wrench is a closure wrench, It is difficult to unscrew and tighten the tightened nut in the narrow space above the nut. If the contact surface of the nut and the wrench is damaged, a nut or a wrench There was a problem that I could not write.

Korean Registered Patent No. 10-0703144 ("Spanner ", registered on Apr. 4, 2007)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide an apparatus and a method for disassembling a spanner, And to provide an open gear spanner capable of coping with surface damage.

In order to solve the above problems, the open gear spanner according to the present invention includes a bar-shaped handle 100, an inner space 210 fixed to one end of the handle 100, A head portion 200 including an insertion space 220 into which the nut 20 is inserted and an opening portion through which a part of the surface abutting the nut 20 is opened; A belt 300 in which a portion located on the opening is protruded outward and abuts against the nut 20 and a tooth 310 is continuously formed on an inner side of the belt 300, And a rotation fixing part 500 installed in the inner space 210 to rotate the belt 300 only in one direction.

When the user turns the knob 100 to one side when the nut 20 is tightened or loosened, the open gear spanner fixes the belt 300 to the belt 100, The belt 300 rotates along the outer circumferential surface of the nut 20 when the user rotates the knob 100 while the nut 300 rotates without rotating the nut 20, .

The gear 400 is located at the first head portion 240 and the second head portion 250 facing each other of the head portion 200 and is perpendicular to the longitudinal direction of the handle 100, In the first direction which is the direction of the nut (20).

The gear 400 includes a wheel rotation shaft 410 protruding outward from the head 200. One end of the open gear spanner is connected to the wheel rotation shaft 410, And a throttle unit 600 hinged to the stop of the gear 100 to intersect with the handle 100 and to cause the gear 400 to move in the first direction by tightening the other end.

Further, the belt 300 is characterized in that the surface contacting the nut or the whole is formed of an elastic material.

In addition, the belt 300 is formed by connecting a plurality of connectors.

According to the present invention, since the belt is formed in a detachable form, the belt can be replaced even if the belt is worn. Therefore, the configuration except for the belt can be recycled, and repairing and replacing are easy.

Further, according to the present invention, there is an effect that the operator can tighten or loosen the nut without inserting the nut and removing the nut.

Further, according to the present invention, since the wrench is an open wrench, there is an effect that the nut can be tightened or loosened even in a space with a narrow space above the nut.

1 is a perspective view of an open gear spanner according to the present invention;
2 is a first sectional view of the open gear spanner according to the present invention.
3 is a second sectional view of the open gear spanner according to the present invention.

Hereinafter, an open gear spanner according to the present invention will be described in detail with reference to the accompanying drawings.

1 and 2, an open gear spanner according to the present invention includes a handle 100, a head 200, a belt 300, a cog wheel 400, and a rotation fixing part 500 .

As shown in FIG. 1, the handle 100 is a handle in the form of a bar. As shown in FIG. 1, in the embodiment of the open type gear spanner according to the present invention, the head part 200 is formed only at one end of the handle 100, but a separate structure may be provided at the other end . For example, the other end of the handle 100 may be provided with a separate head capable of tightening or loosening a nut having a different diameter, or a driver. The knob 100 itself is made of a heavy material as is the case with a normal spanner, because a lot of force is transmitted to tighten the nut, so that it is intended to withstand this, that is, to improve durability.

The head unit 200 is configured to be fixed to one end of the handle 100 and to receive a screw therein and includes an internal space 210, an insertion space 220, an open surface (not shown), a first head unit 240 And a second head portion 250. [

The head portion 200 has an inner space 210 in a hollow form. 2 shows an internal sectional view of the head unit 200. As shown in FIG. 2, the belt 300, the gear 400 and the rotation fixing unit 500 ). That is, the head unit 200 serves as a kind of housing including the belt 300, the gear 400 and the rotation fixing unit 500.

2, the insertion space 220 is a space into which the nut 20 is inserted. The first and second head portions 240 and 250 are formed on both sides of the insertion space 220, .

The open face of the first head portion 240 and the second head portion 250 is in contact with the nut 20. That is, the opening surface exposes the internal space 210 and exposes the belt 300 to be described later.

As shown in FIG. 2, the first head portion 240 and the second head portion 250 are two protruding portions of the head portion 200, and include the openings facing each other in parallel with each other to be.

The belt 300 rotates along the outer circumferential surface of the inner space 210. A portion of the belt 300 protruding outwardly abuts the nut 20 and the teeth 310 are continuously formed do. The belt 300 directly contacts the nut 20 to rotate the nut 20 or rotate along the outer circumferential surface of the nut 20. The portion of the belt 300 protruding outwardly from the open end of the belt 300 does not contact the outer circumferential surface of the nut 200 when the nut 20 rotates, In order to make it possible. To this end, the width of the belt 300 is formed to be wider than the height of the outer circumferential surface of the nut 20.

The belt 300 is characterized in that the surface contacting the screw or the entirety is formed of an elastic material. This is to protect the angular outer circumferential surface of the nut 20 and to cancel it when the diameter of the screw and the size of the insertion space 210 are slightly different.

The belt 300 may be formed by connecting a plurality of connectors. It is similar to an infinite track used as a means of transport in places such as forklifts, tanks or armored vehicles. If a part of the belt 300 is damaged, it is only necessary to replace the damaged connector, which is economical and can be easily replaced by a user. In order to facilitate the replacement of the belt 300, the head unit 200 may be formed as a prefabricated type so as to be openable and closable.

The gear 400 is rotatably engaged with the teeth 310 and is formed on the first head portion 240 and the second head portion 250 facing each other of the head portion 200, In the direction of the nut 20 perpendicular to the longitudinal direction of the nut 20. 2, in an embodiment of the open gear spanner according to the present invention, two gears 400 are included, but in order to facilitate the rotation of the gears 300, May be additionally included. The gear wheel 400 not only smoothly rotates the belt 300 but also sets a rotation orbit of the belt 300.

As shown in FIG. 1, the gear 400 includes a wheel rotation shaft 410 protruding outward from the head unit 200. The wheel rotation shaft 410 protruding outside the head unit 200 moves in a flow space formed through the outer circumferential surface of the head unit 200. The enlarged view of FIG. 1 shows that the wheel rotation axis 410 can flow in the flow space.

1, the throttle portion 600 includes a hinge portion 610 having one end connected to the wheel rotation shaft 410 and an interrupted end coupled to an end of the handle 100, 100) in the X-shape. The throttle unit 600 includes the wheel rotation shaft 410 connected to one end, the gear 400 connected to the wheel rotation shaft 410, the position of the belt 300 coupled to the gear 400, When the other end of the tightening unit 600 is held together with the handle 100, the belt 300 and the gear 400 (see FIG. 4) And the wheel rotating shaft 410 are moved in the first direction so that the force can be transmitted to the nut 20. Although only one of the tightening parts 600 shown in Figure 1 is installed, When the rotary shaft 410 protrudes to both sides of the head portion 200, the rotary shaft 410 may be coupled to the opposite rotary shaft so as to be formed in two. The grip portion 600 is removed from the tightening portion 600, The dog is in the form to cross each other as X may serve as the handle (100).

2 and 3, the rotation fixing part 500 is installed in the inner space 210 so as to rotate the belt 300 only in one direction. 2, the rotation fixing part 500 is rotatable by the fixed-portion rotary shaft 510. [ The end of the fixed shaft rotary shaft 510 protrudes outward from the head unit 200. The user can rotate the end of the fixed shaft rotary shaft 510 to change the direction of the rotation fixing unit 500 So that the direction in which the belt 300 rotates can be set.

Fig. 2 shows a state where the nut 20 is inserted into the open gear spanner according to the present invention and tightened. At this time, the belt 300 protrudes from the open side and presses the nut 20, and since the friction force acting between the belt 300 and the nut 20 is large, Do not rotate. In order to transmit the rotational force of the user's hand to the nut 20 through the belt 300, the user tightens the grip portion 600 and the grip 100 adjacent to each other. In this state, when the knob 100 is rotated in the direction of the arrow shown in the side, the nut 20 will be rotated.

FIG. 3 shows a state when the nut 20 is returned to the position shown in FIG. 2 in order to retighten the nut 20 to the open gear spanner according to the present invention. As shown in FIG. 3, the belt 300 is rotated along the outer circumferential surface of the nut 20. That is, the remaining structure except for the belt 300 moves in the direction shown in Fig. At this time, the diameter of the nut 20 may be larger than that shown in FIG. 3, the user must rotate the knob 100 without tightening the tightening unit 600 so as to be adjacent to the knob 100.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the present invention as defined by the appended claims.

20: Nut
100: Handle
200:
210: inner space
220: Insertion space
240: first head portion
250: second head portion
300: Belt
310: toothed
400: Gear wheel
410: wheel rotating shaft
500:
510: Fixed-
600:
610:

Claims

A bar-shaped handle 100;
An insertion space 220 which is fixed to one end of the handle 100 and has an inner space 210 in a hollow form and has an opening at one side and into which a nut 20 is inserted, A head portion 200 including an open side surface on which an opening is opened;
A belt 300 rotating along the outer circumferential surface of the inner space 210 and protruding outwardly from the opening to abut the nut 20 and continuously forming teeth 310 on the inner surface thereof;
A toothed wheel 400 that meshes with the toothed wheel 310; And
A rotation fixing unit 500 installed in the inner space 210 to rotate the belt 300 only in one direction;
, &Lt; / RTI &
The gear 400 is located in the first head portion 240 and the second head portion 250 facing each other of the head portion 200 and is perpendicular to the longitudinal direction of the handle 100, 20), and includes a wheel rotation shaft (410) protruded to the outside of the head part (200)
And the other end thereof is connected to the wheel rotation shaft 410. The stop is hinged to the stop of the handle 100 to intersect the handle 100 and the other end of the handle 400 is fastened to the gear wheel 400 in the first direction Further comprising a throttling portion (600) for causing the torsion spring

2. The apparatus according to claim 1, wherein the open gear spanner
When the user rotates the knob 100 to one side when the nut 20 is tightened or loosened, the rotation fixing unit 500 fixes the belt 300 so that the belt 300 does not move The nut 20 is rotated,
Wherein when the user rotates the handle (100) to the other side, the belt (300) rotates along the outer peripheral surface of the nut (20).

delete

2. The apparatus of claim 1, wherein the belt (300)
And the surface or the entire surface abutting the nut is made of an elastic material.

2. The apparatus of claim 1, wherein the belt (300)
And a plurality of connecting members are connected and formed.