JP3164682U - Sleeve for fastener removal - Google Patents

Abstract

A sleeve for removing a fastener is provided. A receiving edge located on the outer peripheral surface of the sleeve, the receiving edge comprising a wrench splice. The sleeve has a fitting hole located on the inner peripheral surface of the sleeve, and the fitting hole can be used for fitting the fastener. The fitting hole includes a plurality of fitting portions and a plurality of relief grooves, and the relief groove is located between two adjacent fitting portions. The fitting joint includes a first step, a second step, and a staircase connection section. The first stage includes a first end and a second end, the first end of the first stage is connected to the escape groove, and the second end of the first stage and the first end of the second stage are connected to the escape groove. . The second end of the first step and the first end of the second step are located at both ends of the staircase connection section, and the second end of the second step is connected to another escape groove. The first stage of the fitting joint is brought into contact with the edge of the fastener, and the fastener, the sleeve, and the wrench are positioned on the same virtual cross section. [Selection] Figure 2

Description

The present invention mainly relates to a kind of sleeve for removing a fastener, and more particularly to a kind of sleeve for removing a tanned fastener or a rusty fastener.

The hand tool can remove the fastener. However, after repeated use or rusting of the fastener, it causes wear by repeated turning with a hand tool, the fastener is worn by a hard seed tool, and the corner of the fastener is worn and licked, The fastener cannot be turned smoothly with a hand tool. Hand tools and fasteners cause slipping and the purpose of tightening or loosening cannot be achieved.

People's Republic of China Patent 962155962. According to No. X (Patent Document 1), a wrench capable of turning a kind of worn bolt's geometrical surface is formed by the inner hole of a spectacle wrench or socket wrench forming a dodecagon, and chamfered at the corner apex. The arches on each side are provided with sharp teeth developed in an M shape, and the sharp teeth and corners provided at the borders of adjacent arches are formed in a balanced shape, and the tanned bolts are tightened or loosened. be able to.

However, this type of spectacle wrench design that forms special drive holes requires the user to purchase a new wrench. I can not cope. For this reason, users are forced to bear a large economic burden. Moreover, extra storage space is required to store one set of wrench. Further, according to another embodiment of Patent Document 1, a special drive hole is designed in the socket wrench, and the manufacturing cost and volume of the sleeve are smaller than a set of wrench, but the socket is purchased as a set. The problem of high cost remains.

People's Republic of China Patent 962155962. No. X

Therefore, a main object of the present invention is to provide a kind of sleeve for removing a fastener, which can solve the drawbacks of the known technology.

In order to solve the above problems, the present invention is a sleeve for removing a fastener having a receiving edge and a fitting hole, wherein the receiving edge is located on an outer peripheral surface of the sleeve, and the receiving edge is The fitting hole is provided on the inner peripheral surface of the sleeve, the fitting hole is capable of fitting a fastener, and the fitting hole has a plurality of fitting portions and a plurality of reliefs. The escape groove is positioned between two adjacent joints, the joint includes a first step, a second step, and a staircase connection section, and the first step is Including a first end and a second end, including the first end and the second end of the second stage, connecting the first end of the first stage to the escape groove, and The second end of the second stage and the first end of the second stage are located at both ends of the staircase connection section, and the second end of the second stage Connecting to the other relief groove, contacting the first stage of the fitting joint to the edge of the fastener, and positioning the fastener, the sleeve, and the wrench in the same virtual cross section. Features.

From the above description, the present invention can summarize the following advantages.

<I> Since the cost of the member used for the sleeve for removing the fastener of the present invention is much lower than that of the bushing, the cost of the member can be effectively reduced by applying the sleeve of the present invention. Furthermore, since the sleeve of the present invention can be formed by pressing, the forming cost of the sleeve is much lower than that of the bushing. In other words, the sleeve of the present invention can satisfy the demand for cost reduction as compared with the conventional bushing.

<B> The sleeve for removing the fastener according to the present invention has a maximum wall thickness between the second end of the first stage of the fitting joint and the protruding angle of the receiving edge, and the sleeve structure is determined by the maximum wall thickness. The strength can be effectively increased, and deformation of the sleeve can be prevented.

<C> The sleeve for removing the fastener according to the present invention is such that the thickness of the wall between the first stage of the fitting joint and the receiving edge is larger than the thickness of the wall between the second stage and the receiving edge. When the load is applied to the sleeve by effectively handling and responding to the load at the first stage, the first stage can prevent deformation and have a better structural strength.

<D> The fastener removing sleeve of the present invention has a height of the sleeve higher than the thickness of the opening of the wrench, and a height of the sleeve higher than the thickness of the head portion of the fastener. When turning, the cross-section of the tanned fastener and the sleeve and the wrench are in the same position, and the amount of turning force of the wrench is transmitted to the sleeve as it is, and the amount of turning force that the sleeve takes is transmitted to the tanned fastener as it is.

It is a three-dimensional external view of the sleeve for fastener removal of this invention. It is sectional drawing of the sleeve for fastener removal of this invention. FIG. 3 is a detail enlarged view taken from FIG. 2 of the present invention. It is a three-dimensional external view which shows removal of a fastener with the sleeve of this invention. It is sectional drawing which shows removal of a fastener by the sleeve of this invention. It is a mode figure which the both-ends spanner to which this invention is applied turns the tanned fastener through a sleeve. FIG. 3 is a view showing a state in which a double-ended spanner to which the present invention is applied turns a rusty fastener through a sleeve. FIG. 3 is a view showing a manner in which a glass wrench to which the present invention is applied turns a tanned fastener through a sleeve.

1 and 2, a three-dimensional external view and a cross-sectional view of a sleeve for removing a fastener of the present invention are referred to. A receiving edge 10 is formed on the outer peripheral surface of the sleeve 1 of the present invention, and the receiving edge 10 is provided for a joint of a wrench. The receiving edge 10 has a plurality of helicopters 11, a plurality of retracting angles 12, and a plurality of protruding angles 13. The helicopter 11 is connected to the retraction angle 12 and the protrusion angle 13, the number of retraction angles 12 is equal to the number of the protrusion angles 13, and the total number of retraction angles 12 and the number of protrusion angles 13 is equal to the number of helicopters 11. equal. In this embodiment, the receiving edge 10 forms a 24-sided shape, the number of pull-in angles 12 is 12, and the number of protrusion angles 13 is 12. The receiving edge 10 may be formed in a hexagonal shape or other shapes that can be rotated by a wrench.

A fitting hole 20 for fitting a fastener is formed on the inner peripheral surface of the sleeve 1, and the fitting hole 20 includes a plurality of fitting portions 21 and a plurality of relief grooves 22. Located between the fitting joints 21. In this embodiment, the number of the fitting joints 21 and the escape grooves 22 is six.

The fitting part 21 includes a first stage 211, a second stage 212, and a staircase connection section 213. The first stage 211 includes a first end 2111 and a second end 2112, and the second stage 212 includes a first end 2111 and a second end 2112. The first end 2111 of the first step 211 is connected to the escape groove 22, and the second end 2112 of the first step 211 and the first end 2121 of the second step 212 are located at both ends of the staircase connection section 213. Since the second end 2122 of the second stage 212 is connected to another escape groove 22 and the escape groove 22 is formed in an arc shape, there is no problem of stress concentration.

The sleeve 1 has the center O of the virtual circle, and the distance L1 from the center O of the virtual circle to the second end 2112 of the first stage 211 is the shortest distance from the center O of the virtual circle to the fitting hole 20. The distance L2 from the center O of the virtual circle to the escape groove 22 is the maximum distance from the center O of the virtual circle to the fitting hole 20.

Still referring to FIG. The staircase connection section 213 is made to correspond to the protrusion angle 13, and the escape groove 22 is also made to correspond to the protrusion angle 13. The maximum thickness D1 of the wall is formed between the second end 2112 of the first stage 211 and the protruding angle 13 of the receiving edge 10, and the structural strength of the sleeve 1 can be effectively enhanced by the maximum thickness D1 of the wall, and the sleeve 1 deformation can be prevented.

The sleeve 1 has the maximum wall thickness D1 because the number of pull-in angles 12 is equal to the number of protruding angles 13 and is equal to twice the number of joints 21.

The maximum wall thickness D1 is greater than the distance D2 in which the first end 2121 of the second stage 212 extends vertically to the receiving edge 10. The distance D4 that the second end 2122 of the second stage 212 extends vertically to the receiving edge 10 is smaller than the distance D3 that extends vertically from the first end 2111 of the first stage 211 to the receiving edge 10. In other words, the wall thickness between the first stage 211 and the receiving edge 10 is larger than the wall thickness between the second stage 212 and the receiving edge 10, so that the first stage 211 is effective for load. Can take charge of. Further, when a force is applied to the sleeve 1, deformation can be prevented by the first stage 211, and the structural strength is better.

4 and 5, reference is made to the three-dimensional external view showing the removal of the fastener by the sleeve of the present invention and the sectional view. By using the sleeve 1 and the two-end spanner 2 in combination, the tanned fastener 3 can be removed. Since the usage amount of the sleeve 1 member is much smaller than the bushing of the same number, even if the sleeve 1 is applied, the cost of the member can be effectively reduced. Furthermore, since the sleeve 1 can be press-molded, the cost for molding the sleeve 1 is much lower than that of the bushing. In other words, the sleeve 1 can surely satisfy the demand for cost reduction as compared with the conventional bushing.

In the present embodiment, the height of the sleeve 1 is higher than the thickness of the two-end spanner 2 and the height of the sleeve 1 is thicker than the thickness of the head portion of the tightened fastener 3. The opening 200 of the wrench 2 is fitted to the receiving edge 10 of the sleeve 1, and the fastener 3 having the fitting hole 20 of the sleeve 1 is joined. When turning, the tanned fastener 3, sleeve 1 and wrench 2 are positioned in the same virtual cross section B, so that the amount of turning force of the wrench 2 is transmitted to the sleeve 1 as it is, and all the amount of turning force that the sleeve 1 takes over is transmitted. It is transmitted to the tanned fastener 3.

FIG. 6 is a view showing a state in which a wrench to which the present invention is applied rotates a tanned fastener through a sleeve. When the receiving edge 10 of the sleeve 1 is provided with twelve pulling angles 12 and twelve projecting angles 13, the opening 200 of the two-end spanner 2 is provided with two engagement surfaces 210 opposite to each other, and each engagement surface 210 can engage the two protruding angles 13. Therefore, the wrench 2 can drive and rotate the sleeve 1.

The fastener 3 is fitted to the fastener 3 with the fitting hole 20 of the sleeve 1, and corresponds to the helicopter 310 of the fastener 3 with the fitting portion 21 of the sleeve 1, and the corner 320 of the fastener 3 with the relief groove 22 licked. Correspondingly, the first step 211 of the fitting joint 21 is brought into contact with the lip 310 of the fastener 3, and the second end 2112 of the first step 211 is engaged with the lip 310. The second stage 212 of the joint portion 21 is not in contact with the lip 310 of the tightened fastener 3.

The escape groove 22 can accommodate the corner 320 of the tanned fastener 3, and when turning the tanned fastener 3, the excessive amount of turning force can prevent the corner 320 of the tanned fastener 3 from being tanned or aggravated.

When removing the fastener 3 tanned by the two-end spanner 2, the second end 2112 of the first stage 211 of the six fitting joints 21 of the sleeve 1 is engaged with the edge 310 to form six engagement points A, By engaging the fasteners 3 licked with the six engagement points A, the sleeve 1 is securely engaged with the fasteners 3 licked. By continuing to turn the both-end spanner 2, the tanned fastener 3 can be removed smoothly.

Reference is made to FIG. 7, an operational diagram illustrating the turning of a rusty fastener with the sleeve of the present invention. The sleeve 1 of the present invention can also turn a rusty fastener 4. The hardness of a general fastener is lower than that of a turning tool. When an excessive turning force is applied to the fastener when the fastener is turned with the tool, the fastener is licked.

When the rusty fastener 4 rusts, a rust surface is formed on the surface of the rusty fastener 4, and the hardness of the surface of the rusty fastener 4 is lower than that of a normal fastener. The double-ended wrench 2 is fitted to the sleeve 1, the rusty fastener 4 is fitted to the fitting hole 20 of the sleeve 1, the fitting portion 21 of the sleeve 1 is made to correspond to the edge 410 of the rusty fastener 4, and the relief groove 22 is formed. Corresponding to the corner 420 of the rusty fastener 4, the first stage 211 of the fitting 21 is brought into contact with the edge 410 of the rusty fastener 4, and the second end 2112 of the first stage 211 is engaged with the edge 410. .

When the rusty fastener 4 is removed by the double-ended spanner 2, the second end 2112 of the first stage 211 of the six fitting portions 21 of the sleeve 1 is engaged with the edge 410, and the second end 2112 of the first stage 211 is opened. By extending to 410, six meshing points A are generated, and by meshing these six meshing points A with the rusty fastener 4, the sleeve 1 is securely meshed with the rusty fastener 4. The rusty fastener 4 can be removed smoothly by continuously turning the both-end spanner 2.

Reference is now made to FIG. 8, which is an operational diagram illustrating the turning of the tanned fastener by the sleeve of the present invention. The sleeve 1 of the present invention can also be applied to the eyeglass wrench 5. The drive hole 500 of the spectacle wrench 5 has twelve concave engagement surfaces 510 and twelve protruding engagement surfaces 520, the drive hole 500 of the spectacle wrench 5 is joined to the receiving edge 10 of the sleeve 1, and the spectacle wrench 5 is concave. The meshing surface 510 is made to correspond to the projecting angle 13 of the sleeve 1, the projecting meshing surface 520 of the spectacle wrench 5 is made to correspond to the pulling angle 12 of the sleeve 1, and all the meshing surfaces 510 and 520 are projected to the projecting angle 13 and the pulling angle. 12 can be engaged with each other. Therefore, the spectacle wrench 5 can drive and rotate the sleeve 1 reliably.

DESCRIPTION OF SYMBOLS 1 Sleeve 10 Receiving edge 11 Edge 12 Retraction angle 13 Projection angle 20 Fitting hole 21 Fitting hole 211 First stage 2111 First end 2112 Second end 212 Second stage 2121 First end 2122 Second end 213 Stair connection section 22 Escape groove 2 Wrench 200 Opening portion 210 Engagement surface 3 Tanned fastener 310 Edge 320 Corner 4 Rusty fastener 410 Edge 420 Angle 5 Wrench 500 Drive hole 510 Recessed engagement surface 520 Projecting engagement surface O Center of virtual circle L1 Distance L2 Distance D1 Maximum wall thickness D2 Distance D3 Distance D4 Distance A Intermeshing point B Virtual cross section

Claims (10)

A sleeve for removing a fastener having a receiving edge and a fitting hole,
The receiving edge is located on an outer peripheral surface of the sleeve, and the receiving edge includes a wrench splice;
The fitting hole is located on the inner peripheral surface of the sleeve and can be fitted with a fastener, and includes a plurality of fitting parts and a plurality of relief grooves,
The escape groove is located between two adjacent joints;
The fitting portion includes a first step, a second step, and a staircase connection section, the first step includes a first end and a second end, and the second step includes the first end and the first step. Including two ends,
The first end of the first step is connected to the escape groove, the second end of the first step and the first end of the second step are located at both ends of the staircase connection section, and the second step The second end of the eye is connected to another relief groove, the first step of the fitting joint is in contact with the edge of the fastener;
A fastener removing sleeve, wherein the fastener, the sleeve, and the wrench are positioned on the same virtual cross section. The sleeve has a virtual circle center, and the distance from the center of the virtual circle to the second end of the first stage is the shortest distance from the center of the virtual circle to the fitting hole. The sleeve for removing a fastener according to claim 1. 3. The fastener removing sleeve according to claim 2, wherein the distance from the center of the virtual circle to the escape groove is the maximum distance from the center of the virtual circle to the fitting hole. The receiving edge includes a plurality of the edges, a plurality of pulling angles, and a plurality of protruding angles,
The edge is connected to the pull-in angle and the protrusion angle, the staircase connection section corresponds to the protrusion angle, and the maximum wall is between the second end of the first step and the protrusion angle of the receiving edge. The fastener removing sleeve according to claim 1, wherein a thickness is formed, and the maximum thickness of the wall can effectively enhance the structural strength of the sleeve and prevent deformation of the sleeve. 5. The fastener removing sleeve according to claim 4, wherein a maximum thickness of the wall is larger than a distance obtained by vertically extending the first end of the second stage to a receiving edge. 6. The distance that the second end of the second stage extends vertically to the receiving edge is smaller than the distance that the first end of the first stage extends vertically to the receiving edge. A sleeve for removing the described fastener. The fastener for detaching a fastener according to claim 1, wherein one engagement point is formed by engaging the second end of the first stage of the fitting portion of the sleeve with the edge of the fastener. Sleeves. The receiving edge includes a plurality of the edges, a plurality of the retraction angles, and a plurality of the protrusion angles, and the number of the retraction angles is equal to the number of the protrusion angles, and the number of the retraction angles and the protrusion angles. 2. The fastener removing sleeve according to claim 1, wherein the sum of the two is equal to the number of the edges, the step connection section corresponds to the protrusion angle, and the escape groove corresponds to the protrusion angle. The receiving edge forms a 24-side shape, the number of pull-in angles is 12, the number of projecting angles is 12, and the number of the fitting joints and the clearance grooves is six. The sleeve for removing fasteners according to 8. 2. The sleeve for removing a fastener according to claim 1, wherein the escape groove is formed in an arc shape so that a problem of stress concentration does not occur.