KR100542181B1 - Wrench - Google Patents

Abstract

The present invention relates to a wrench used to tighten or loosen a fastening member such as a bolt, nut, or screw, and more particularly, a force for tightening a bolt, nut, or screw (hereinafter, referred to as a fastening member). If a certain value is exceeded, the wrench can be turned to prevent the wear part's turning part and the turning groove of the fastening member from being worn, and the fastening member can be fastened with the exact force to be tightened. Another example relates to a wrench provided with a bearing disengagement hole in the handle portion of the wrench.

According to the present invention, the upper portion of the bag portion 3 rotatably installed on the handle portion 2 is a gear portion 7 of the non-rotating body 4 inserted into the handle portion 2 inside the handle portion 2. In the gear type is installed in engagement with, the inside of the handle portion 2 is formed with a through hole 14 in the lower portion, the engaging portion 12 is formed on the outer circumference and the female screw portion 13 is formed on the inner circumference The screw tube 15 is fixedly installed, and the gear portion 7 is fitted to the upper surface of the disc-shaped base portion 10a in which the bag portion 3 is integrally formed at the lower end of the screw tube 15. A plurality of locking protrusions 10 are formed, and a rotating body 11 having an inclined portion 9 formed at a counterclockwise edge portion of each of the locking protrusions 10 is provided with a compression coil spring 16 at a lower side thereof. Is inserted into the elastically inserted state, the non-rotating body (4) is a male thread which is fastened to the female threaded portion 13 of the screw pipe 15 on the outer periphery Slope portion (6) is formed, the wrench groove (5) is formed on the upper portion, the gear portion (7) is formed downward in the bottom to engage the engaging projection 10, the inclined portion (8) is formed in the clockwise side corner portion The non-rotating body 4 is characterized in that the molding is installed together with the screw tube 15 in the handle portion 2 in a state in which the torque is adjusted to the female screw portion 13 of the screw tube 15.

Wrench, screwdriver, screw, ratchet driver, rotating body, non-rotating body, screw tube, handle part, bag part, female part part, male part part

Description

Wrench {Wrench}

1 is a longitudinal sectional view showing one embodiment of a wrench according to the present invention.

Figure 2 (a) (b) is a partial perspective view and a partial cross-sectional view showing the structure of the non-rotating body and the rotating body which is the main part of the present invention.

3 is a cross-sectional view taken along the line A-A of FIG.

Figure 4 is a longitudinal sectional view showing this embodiment of the wrench according to the present invention.

Figure 5 is a longitudinal sectional view showing a third embodiment of a wrench according to the present invention.

Figure 6 is a longitudinal cross-sectional view showing an actual example of a wrench according to the present invention.

7 is a use state diagram showing a state of disassembling the bearing as a wrench of the third and fourth embodiments.

<Explanation of symbols for main parts of drawing>

1 Wrench 2 Handle 3 Bag

4 non-rotating body 5 wrench groove 6 male thread part

7 gear portion 8 inclined portion 9 inclined portion

10: engaging protrusion 11: rotating body 12: locking part

DESCRIPTION OF SYMBOLS 13 Female thread part 14 Through-hole 15 Screw tube

16: compression coil spring 17: vertical tube 18: driver groove

19: rotating rod 20: set screw 21: rod-shaped bearing disassembly

22: locking bearing disassembly 23: fastening member 24: turning groove

The present invention relates to a wrench used to tighten or loosen a fastening member such as a bolt, nut, or screw, and more particularly, a force for tightening a bolt, nut, or screw (hereinafter, referred to as a fastening member). If a certain value is exceeded, the wrench can be turned to prevent the wear part's turning part and the fastening groove of the fastening member from being worn, and the fastening member can be fastened with the exact force to be tightened. Another example relates to a wrench provided with a bearing disengagement hole in the handle portion of the wrench.

In the related art, a screw driver having a constant torque has been filed and disclosed as a utility model, and this prior application (Korean Utility Model Publication No. 1996-30671, name: screw driver having a constant torque) is provided in a screw driver handle part. A screw driver in which first and second gears having a constant torque are provided against an elastic force of an elastic member, wherein the screw driver is for fastening a screw having a + shape, in a handle part of the screw driver. A support having a shape of a magnet, an extended first gear, a second gear meshing with the first gear, and an elastic member pressed at a predetermined pressure on the first and second gears.

The conventional design as described above is a ratchet driver capable of rotating in only one direction while the first and second gears engaged with each other as described in claims 2 and 3 are formed in a sawtooth shape.

According to the conventional design of such a ratchet driver type, when the screw is tightened, the vertical perpendicular portions of the toothed first and second gears are caught to transmit the rotational force, and when the screw driver is tightened once, the toothed first and second teeth are returned. The inclined portion of the two gears rotates beyond the inclined portion of each other so that the rotational force is transmitted only in one direction and the rotational force cannot be transmitted in the other direction.

Therefore, such a conventional design is to use only one part in the production line of the factory when tightening with a constant force, it is to be used only within a very limited range that can not be used to loosen the fastened screw.

However, in the wrench according to the present invention, when the force to which the fastening member is tightened in the process of fastening the fastening member is greater than the set rotational torque (torque), the wrench can not be tightened to tighten the fastening member with a larger force to fasten the wrench. In order to prevent damage to the member and, on the contrary, in the case of releasing the fastening member, the wrench and the conventional design of the present invention are separate from each other because it is possible to freely loosen the fastening member without a predetermined force as a general screwdriver and a wrench. .

In the related art, as mentioned above, when the fastening member is tightened with a constant torque and there is no wrench that can be freely released without a predetermined torque when the fastening member is released, a general screwdriver or a wrench is used and a wrench and the fastening member are used. There was a problem that the product is damaged, the product to which the fastening member is fastened together, or the value of the product to which the damaged fastening member is squeezed off.

The present invention is to solve the above problems by tightening the fastening member as a wrench when the force to tighten the fastening member exceeds a certain value, so that the wrench turns away, preventing the turning part of the wrench and the turning groove of the fastening member The technical task is to provide a wrench that can be fastened with the correct force to be tightened to improve the quality of the product.

In addition, as another example, by adjusting the tightening force of the fastening member, it is another technical task to use the torque to adjust the torque with one wrench even for the fastening member of the other process to be tightened with a different force with one wrench. .

In addition, it is possible to easily disassemble the bearings of simple products such as inline skates as well as to fasten the wrench to the fastening member by installing a bearing disengagement hole in the wrench of the present invention. It is another technical problem.

The present invention for achieving the above object, the upper part of the handle portion rotatably installed in the handle portion is installed in the gear portion of the non-rotating body of the non-rotating body inserted into the handle portion in the handle portion, the handle portion, A through-hole is formed in the lower part, and a hooking part is formed in the outer circumference, and a screw tube having a female thread part is fixedly installed in the inner circumference. A plurality of engaging projections are formed on the gear unit, and a rotating body having an inclined portion at the counterclockwise edge portion of each of the engaging projections is inserted and installed with the compression coil spring elastically installed at the lower side thereof. The non-rotating member has a male screw portion which is fastened to the female screw portion of the screw tube on an outer circumference thereof and has a len on the upper portion thereof. A groove is formed, and the gear portion engaging downwardly with the engaging protrusion is formed at the bottom thereof, and an inclined portion is formed at the corner of the clockwise side, and the non-rotating body is torque-controlled and installed in the handle portion with the screw tube in the handle portion. It is characterized in that the molding installation.

Hereinafter, a wrench according to the present invention will be described with reference to the accompanying drawings of FIGS. 1 to 7.

Wrench according to an embodiment of the present invention, as shown in Figures 1 to 3, the screw tube 15 is fixed to the inside of the handle portion 2 is inserted. At this time, the non-rotating body (4) is installed in the upper side of the screw tube (15), the lower bag portion (3) inside the screw tube (15) of the lower non-rotating body (4) of the handle portion (2) Protrudes downward to the outside and the upper rotor 11 is inserted state, the compression coil spring 16 is elastically inserted in the lower rotor 11 inside the screw tube (15).

As described above, the non-rotating body 4 and the rotating body 11 provided with the bag 3 at the lower side of the screw tube 15 are installed in a state in which the compression coil spring 16 is elastically installed at the lower side. The assembly is molded by injection into the inside of the handle portion 2 in a state in which the elasticity of the compression coil spring 16 is adjusted as the non-rotating body 4.

The screw tube 15 has a through hole 14 through which the bag 3 is to be penetrated at the bottom thereof, and the screw tube 15 is molded at the inside of the handle 2 at the outer circumference thereof. A locking portion 12 is formed to prevent the screw tube 15 molded therefrom from turning. A female thread portion 13 is formed at an inner circumference of the screw tube 15.

In addition, the rotating body 11 having the bag portion 3 integrally formed at the lower end thereof has a plurality of meshing parts with the gear portion 7 on the upper surface of the base portion 10a formed in a disc shape integrally connected to the bag portion 3. Two locking projections 10 are formed, and an inclined portion 9 is formed in the counterclockwise side corner portion of each of the locking projections 10.

The non-rotating body 4 has a male thread part 6 which is fastened to the female thread part 13 of the screw tube 15 at the outer circumference thereof, and the non-rotating body 4 is fastened to the screw tube 15 as a hex wrench on the upper part. Wrench groove 5 is formed to be formed, and the gear portion 7 which is formed downward at the lower end and engages with the engaging protrusion 10 has an inclined portion 8 formed at a clockwise side edge.

In addition, the turning part 3a formed at the lower end of the bag 3 is illustrated in the form of a hexagonal bar, but may be formed in a shape such as a "-" shape, a "+" shape, a triangle, a square, or the like. It turns out that the socket of the box wrench can be installed.

The following is a description of this embodiment of the present invention shown in Figure 4, this embodiment can cover the rotating rod 19 and the rotating rod 19 to rotate the non-rotating body 4 in one embodiment As the straight pipe 17 is added, only the added structure will be described, and description of the same structure as in the exemplary embodiment will be omitted.

That is, the configuration added in this embodiment is a vertical tube 17 is molded between the upper surface of the screw tube 15, the non-rotating body 4 is screwed fastening and the upper end of the handle portion 2 is molded molding as a synthetic resin material The rotary rod 19 is fixedly installed vertically by the handle portion 2, and the lower end portion is fitted into the wrench groove 5 of the non-rotating body 4 and the driver groove 18 is formed on the upper portion of the vertical pipe 17. ) Is inserted and installed in the tangential portion of the rotating rod 19 and the vertical tube 17 is to fasten the fixing screw 20 to prevent the rotating rod 19 to rotate after adjusting the elasticity by rotating the rotating rod 19.

The following is a description of the third embodiment of the present invention shown in Figure 5, the difference from one embodiment is that the handle portion 2 is formed in the "T" shape of the "T" shaped handle portion 2 Rod-shaped bearing disengagement 21 is formed in one horizontal portion, and the other side horizontal portion is formed with a latching jaw 22a at the distal end, and the rod portion connected to the locking jaw 22a has an inclined portion whose diameter decreases toward the front ( As the engaging bearing disassembling hole 22 formed with 22b) is installed, the description of the same structure as in the exemplary embodiment will be omitted.

In addition, the following is a description of the actual embodiment of the present invention shown in Figure 6, the "T" shaped handle portion 2 of the third embodiment is formed in the present invention of this embodiment, the "T" shaped handle portion 2 The rod-shaped bearing disassembling hole 21 and the engaging bearing disassembling hole 22 are installed at both sides, and the locking bearing disassembling hole 22 has a locking jaw 22a formed at the distal end thereof, The rod portion to be connected is formed with an inclined portion 22b whose diameter decreases toward the front, and in this case, the description of the same structure as this embodiment will be omitted.

The present invention is a locking projection formed on the rotating body. Although the gear parts formed on the non-rotating body are formed so as to protrude in the up and down direction, respectively, and are illustrated and described in the drawings, the locking protrusions are formed on the outer circumferential surface of the rotating body in a gear type, and the non-rotating body is formed on the inner circumferential surface of the tube like an internal gear. It turns out that the gear portion may be formed to correspond to the engaging protrusion formed outward on the outer circumferential surface of the rotating body.

Referring to Figures 1 to 7 the operational relationship of the present invention configured as described above is as follows.

First, the wrench of one embodiment and three embodiments, when manufacturing the wrench of the first and third embodiments, the non-rotating body 4, the rotating body 11 and the compression coil spring 16 is inserted into the screw tube 15 and installed. A screw tube assembly is molded into the inside of the handle part 2 to complete the manufacture of the wrench 1, so that only a specific article can be tightened with a constant torque before molding the screw tube assembly inside the handle part 2. When the screw tube assembly is molded into the inside of the handle part 2 in the state in which the elasticity of the compression coil spring 16 is adjusted by loosening or tightening the non-rotating body 4, the outer surface of the screw tube 15 and the non-rotating body 4 The top surface of the) is molded and fixed to the synthetic resin material forming the handle portion (2).

When the elasticity of the compression coil spring 16 in the screw tube assembly is adjusted as described above, the non-rotating body 4 is loosened or tightened when the hex wrench is inserted into the wrench groove 5 of the non-rotating body 4. (4) is a non-rotating body according to the direction in which the non-rotating body (4) is rotated as the male screw portion (6) is screwed to the female screw portion (13) formed on the inner circumference of the screw tube (15) on the outer periphery ( 4) is raised or lowered in the screw tube (15).

As the non-rotating body 4 rises and falls as described above, the rotating body 11 below the non-rotating body 4 rises and falls in the same way as the non-rotating body 4 rises and falls by the elasticity of the compression coil spring 16 below. It is to be lowered, thus adjusting the torque of the dedicated wrench for tightening a particular article while loosening or tightening the non-rotating body (4).

When the fastening member 23 is fastened to the various fastening objects 25 by using the wrenches of one and three embodiments manufactured as described above, as shown in FIGS. 1 to 3, the lower part of the bag 3 is formed. When the knob 2 is turned clockwise while the protrusion 3a is inserted into the groove 24 of the fastening member 23, the force for turning the wrench 1 is from the knob 2 to the knob ( 2) is screwed to the inside of the screw tube 15, and screwed to the inside of the screw tube 15 while the upper portion is molded in the handle portion 2 is transmitted to the fixed non-rotating body (4), The rotational force transmitted to the non-rotating body 4 is transmitted to the gear portion 7 of the non-rotating body 4 and the locking projection 10 of the rotating body 11 engaged with the gear portion 7.

The rotational force transmitted to the locking protrusion 10 is the vertical portion 7a of the gear portion 7 protruding at the lower end of the non-rotating body 4 and the locking protrusion 10 engaged with the gear portion 7 at the lower portion thereof. As the vertical portions 11a are in contact with each other in surface contact, the force of turning the handle 2 clockwise is perpendicular to the vertical projections 7a of the vertical portions 7a of the gears 7 of each other. The fastening member 23 into which the turning part 3a is inserted is rotated while the bag part 3 integrally formed at the lower part of the locking protrusion 10 and the locking protrusion 10 is transmitted to the part 11a. It is to be fastened to the object (25).

In this way, when the surface contact with each other and the rotational force is transmitted through the vertical portion (7a, 11a) to tighten the fastening member 23 to the fastening object 25, when the fastening member 23 is tightened by the set torque, the torque by the set torque As the bag part 3 does not rotate, the vertical part 7a of the gear part 7 is caught by the vertical part 11a of the locking projection 10, and the bag part 3 and the bag part 3 are no longer formed. It is in a hanging state without going back.

In this state, when the knob portion 2 is turned with a torque greater than the set torque, the vertical portion 7a of the gear portion 7 exceeds the vertical portion 11a of the lower fixed locking protrusion 10 and the gear portion. As the inclined portion 8 of the 7 and the inclined portion 9 of the locking protrusion 10 face each other, the gear portion 7 passes over the locking protrusion 10 in which the position of the gear portion 7 is fixed. In the case of a jam, the fixed stone bends in place and the walking person would be the same principle as the top of the stone bent over because it is unfixed.

That is, when the fastening member 23 is tightened, the handle 3 is turned clockwise in a state in which the turning part 3a of the bag 3 is inserted into the turning groove 24 of the fastening member 23. The member 23 is tightened, and the acting force acts in the horizontal direction clockwise and vertically downward of the bag 3. At this time, the reaction force acts in the opposite direction to the vertical load that pushes the wrench 1 down to the fastening member 23. The bag portion 3 has a lower groove 3a of the turning groove 24 of the fastening member 23. ), The lower side is fixed, so the reaction force is greater than the force to hold the handle (2) and press down. When turning the wrench (1), when the hook (1) is caught in something in the horizontal direction, it will not run anymore. Since the load acts in the vector direction, the vertical portion 7a of the gear portion 7 caught by the vertical portion 11a of the locking projection 10 is inclined upwardly in a diagonal direction. The vertical portion (7a) of the is going to go up.

When the vertical portion 7a of the gear portion 7 which has been raised in this way goes out of the vertical portion 11a of the locking protrusion 10, the inclined portion 8 of the gear portion 7 and the inclined portion of the locking protrusion 10 9) face each other so that the gear portion 7 caught on the locking projection 10 is beyond the locking projection 10 so that the rotational force beyond the set torque is not transmitted to the rotating body 11 as the present invention aims. Preventing the damage of the turning portion (3a) and the turning groove of the fastening member which is the end of the handle (3) of the wrench (1), it is possible to fasten the fastening member 23 to a predetermined torque only.

As described above, when the handle 2 is rotated to the set torque, the elasticity of the compression coil spring 16 becomes a force supporting the rotating body 11 so as to engage with the engaging protrusion 10 that is elastically supported. The same elasticity acts on the part 7 so that the compression degree of the compression coil spring 16 is large and the elasticity is large, so that the gear part 7 of the non-rotating body 4 exceeds the locking protrusion 10 of the rotating body 11. The larger force is required, on the contrary, when the elasticity of the compression coil spring 16 becomes smaller, a smaller force is required for the gear portion 7 of the non-rotating body 4 to cross the locking projection 10 of the rotating body 11. It is natural.

In the case of tightening the fastening member 23 only with the torque set as described above and loosening it, by turning each wrench or driver counterclockwise in the same manner as a general wrench or driver, the gear part 7 of the non-rotating body 4 And the locking projection 10 of the rotating body 11 has a counterclockwise direction formed vertically so that the rotational force of turning the handle 2 in the counterclockwise direction from the non-rotating body 4 to the rotating body 11. Because it is delivered immediately will be able to loosen the fastening member (23).

The following is a description of this embodiment shown in Figure 4, this embodiment and the actual example of Figure 6 is the same for adjusting the set torque by rotating the non-rotating body (4) together with the description of the operation thereof While the description of the operation of the same configuration as the embodiment is omitted.

That is, when the rotational torque for tightening the fastening member is to be adjusted, as shown in FIGS. 4 and 6, when the driver is turned in the state of inserting the driver groove 18 of the rotary groove 19, the rotary rod 19 ) Rotates in the direction of turning the driver inside the vertical tube 17, the non-rotating body 4 connected to the lower end of the rotating rod 19 is raised or lowered inside the screw tube (15).

At this time, the lower body of the non-rotating body 4 is engaged with the rotating body 11, which is elastically supported by the compression coil spring 16, so that the rotating body 11 also rises and falls with the non-rotating body (4). The compression degree of the compression coil spring 16 is adjusted according to the up and down of the rotating body 11, and after the rotation torque is adjusted, the fixing screw is a part where the rotating rod 19 and the vertical pipe 17 are in contact with each other. (20) by fastening the rotating rod 19 so as not to rotate is to complete the adjustment of the rotation torque, and to adjust the rotating torque by turning the rotating rod 19 is to be set to reference to the fastening object It is natural.

Next, a description will be given of the bearing disengagement sphere of the configuration of the third embodiment shown in FIG. 5 and the actual embodiment shown in FIG. 6, and the description of the same configuration as the parts described in the other embodiment and this embodiment will be omitted.

As shown in FIGS. 5 to 7, rod-shaped bearing disassembling holes 21 and locking bearing disassembling holes 22 provided at both sides of the handle portion 2 formed in a “T” shape are inserted into the roller 27 of the inline skate. It is to be able to remove the bearing 26, which is inclined to raise or lower the handle portion 2 in the state in which the rod-shaped bearing disassembling 21 of one side is inserted into the inner ring of the bearing 26, The bearing 26 inserted in the 27 can be pulled out.

In the case of using the locking bearing disengage port 22, a locking jaw 22a is formed at the distal end, and the locking jaw 22a is inserted into the inner ring of the bearing 26, so as to contact with the spacer. After the gap is pulled out, the bearing 26 can be pulled out of the roller. At this time, since the locking jaw 22a of the bearing disassembling hole 22 is located at the tip of the inclined portion 22b that narrows toward the front, the locking jaw 22a is easily separated by a gap with the spacer in contact with the bearing 26. It will be able to fit.

Only the disassembly of the bearing with respect to the rod-shaped bearing disassembling hole 21 and the engaging bearing disassembling hole 22 has been described, but it can be used to perform necessary work according to the shape thereof.

As described above, the wrench of the present invention, when tightening the fastening member as a wrench to prevent the wrench from turning and the turning groove of the fastening member and the fastening groove of the fastening member by tightening the fastening member exceeds a certain value. The member can be tightened with the correct force to be tightened, which has a useful effect of improving the quality of the product.

In addition, by adjusting the tightening force of the fastening member as another example, there is an effect that can be used to adjust the torque with one wrench even the fastening member of the other process to be tightened with a different force as one wrench, the present invention By installing a bearing disassembler on the wrench, the wrench of the present invention can be fastened, as well as the bearing of a simple product such as an inline skate, so that the user's convenience can be increased. .

Claims (3)

The gear part 7 and the gear of the non-rotating body 4 inserted in the handle part 2 in the upper part of the bag part 3 which are rotatably installed in the handle part 2 inside the handle part 2 In the interlocking manner, Inside the screw tube 15, the lower body part 3 is exposed to the lower side, the rotor 11 is elastically inserted into the compression coil spring 16 at the lower side, the inner rotor upper portion of the screw tube 15 The gear portion 7 engaged with (11) is screwed to form a screw tube assembly, and the screw tube assembly is provided with a handle portion 2 molded therein, The screw tube 15 is formed in the shape of a cylindrical tube with an open upper portion, a through hole 14 through which the bag portion 3 is to be formed at the lower portion thereof, and a locking portion 12 is formed at the outer circumference thereof. The female screw part 13 is formed, The rotating body 11 is formed with a plurality of engaging projections 10 engaging with the gear portion 7 on the upper surface of the base portion (10a) formed in a disc shape integrally formed on the upper portion of the bag (3), Each of the locking projections 10 has a clockwise side backside formed vertically, and the counterclockwise front side forms a vertical portion 11a having a vertical bottom portion, and an inclined portion 9 at an upper corner of the vertical portion 11a. ) Is formed, The non-rotating body 4 has a male thread portion 6 which is fastened to the female thread portion 13 of the screw tube 15 at an outer circumference thereof, and a wrench groove 5 is formed at an upper portion thereof, and the locking protrusion 10 is disposed at a lower end thereof. In the gear portion 7 which is formed to engage with), a vertical portion 7a is formed at the bottom of the clockwise side facing the locking projection 10, and the inclined portion 8 is formed at the upper edge of the vertical portion 7a. Wrench characterized in that formed. The vertical tube 17 is fixed vertically between the upper surface of the screw tube 15, to which the non-rotating body 4 is screwed, and the upper end of the handle portion 2. Inside the (17), the lower end is inserted into the wrench groove (5) of the non-rotating body (4), the rotary rod 19 is formed is inserted into the driver groove 18 is formed in the upper portion, the rotary rod 19 and the vertical pipe (17) Wrench, characterized in that the fixing screw 20 is fastened to the tangential portion of the rotating rod 19 so as not to rotate after adjusting the elasticity by rotating the rotary bar (19). According to claim 1 or 2, wherein the handle portion (2) is formed in a "T" shape, one side horizontal portion of the "T" shaped handle portion 2 is formed with a rod-shaped bearing disengagement 21, On the other horizontal part, the locking jaw 22a is formed at the distal end, and the rod part connected to the locking jaw 22a is provided with a locking bearing disengage hole 22 having a slanted portion 22b which is reduced in diameter toward the front. Featuring wrenches.

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