KR20050078831A - Wedge type coupling member - Google Patents

Abstract

Disclosed is a wedge-shaped coupling member for integrally joining two parts. Since the wedge-shaped coupling member has a wedge inserted into a coupling hole formed in the part and is extended radially by an external force, the outer surface of the wedge is pressed against the inner surface of the coupling hole. Then, there is no gap between each part and the wedge so that each part does not flow at all.

Description

Wedge Type Coupling Member {WEDGE TYPE COUPLING MEMBER}

The present invention relates to a wedge-shaped coupling member for coupling two parts integrally.

1 is a view showing a general bolt and nut joining two parts, it will be described.

In order to integrally combine the two parts, as shown in FIG. 1, coupling holes 11a and 15a are formed in the first and second parts 11 and 15, respectively, and the body of the bolt 21 is coupled. Insert into balls 11a and 15a. When the diameters of the coupling holes 11a and 15a are formed in the same size as the diameter of the body of the bolt 21, it is difficult to insert the bolt 21 into the coupling holes 11a and 15a. The inner diameter of 15a is formed larger than the diameter of the body of the bolt 21. Thereafter, when the nut 25 is fastened to the end of the body of the bolt 21 exposed to the outside of the second component 15, the first component 11 and the second component 15 are integrally coupled.

The conventional method as described above is larger than the diameter of the body of the inner bolt 21 of the coupling holes 11a and 15a formed in the first and second components 11 and 15, and thus, the first component 11 and the first component. The two parts 15 have a disadvantage that they flow in the radial direction of the body of the bolt 21 by the difference between the diameter of the body of the bolt 21 and the inner diameter of the coupling holes (11a, 15a).

The present invention has been made to solve the problems of the prior art as described above, an object of the present invention is to provide a wedge-shaped coupling member to prevent the two parts integrally coupled to flow around the coupling portion.

In the wedge-shaped coupling member according to the present invention for achieving the above object in the wedge-shaped coupling member for integrally coupling the first and second components each formed with a coupling hole,

The wedge-shaped coupling member is formed in a shape corresponding to the coupling hole of the first part is inserted into the coupling hole of the first part and expands when an external force is applied to its outer surface on the inner surface of the coupling hole of the first part. A ring-shaped first wedge having a crimped elasticity; It is formed in a shape corresponding to the coupling hole of the second component is inserted into the coupling hole of the second component and expands when an external force is applied, the ring shape having elasticity that the outer surface is pressed against the inner surface of the coupling hole of the second component Second wedge; A body having teeth formed on an outer circumferential surface of the first and second wedges, extending from one end of the body, and having a taper portion and a taper formed in a shape of increasing in diameter toward the outside of the body. A bolt extending and formed at an end of the portion and including a head having an outer diameter greater than the outer diameter of the first wedge; A tooth is formed on an inner circumferential surface thereof and is fastened to the other end side of the body exposed to the outside of the second wedge, and has a larger outer diameter than the outer diameter of the second wedge so that the bolt is rotated by an external force. Moving to the other end side of the tapered portion so as to be inserted into the inner circumferential surface of the first wedge, and the first wedge is inserted into the inner circumferential surface of the second wedge, the nut extending the first and second wedges. .

In addition, the wedge-shaped coupling member according to the present invention for achieving the above object in the wedge-shaped coupling member for coupling the first component and the second component integrally formed, respectively,

The wedge-shaped coupling member is formed in a shape corresponding to the coupling hole of the first and second components, is inserted into the coupling hole of the first and second components, and expands when an external force is applied, A compression ring having an elasticity in which an outer surface thereof is compressed to an inner surface of the coupling hole; Ring-shaped first and second wedges respectively inserted into one end side and the other end side of the crimping ring to extend one end side and the other end side of the crimping ring, respectively; A bolt having a body having teeth formed on an outer circumferential surface of the first and second wedges and extending from one end of the body and having a larger outer diameter than an outer diameter of the pressing ring; A tooth is formed on an inner circumferential surface and is fastened to the other end side of the body exposed to the outside of the second wedge, and is formed with an outer diameter larger than the outer diameter of the crimping ring and rotated by an external force. Moving to an end side such that the first and second wedges are respectively inserted into the compression ring to extend the compression ring.

Hereinafter, a wedge-shaped coupling member according to embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First embodiment

Figure 2 is a perspective view of a wedge-shaped coupling member according to a first embodiment of the present invention, Figure 3 is a sectional view taken along the line "AA" of Figure 2, Figures 4a and 4b is wedge-shaped according to the first embodiment of the present invention Figure 2 shows the coupling of two parts using a coupling member.

As shown, the wedge-shaped coupling member 100 according to the first embodiment of the present invention has a coupling hole having a first wedge 110, a second wedge 120, a bolt 130 and a nut 140 The first component 51 and the second component 55, each of which 51a and 55a are formed, are integrally combined. At this time, the coupling holes 51a and 55a of the first component 51 and the second component 55 are formed in the same size.

The first wedge 110 is provided in a ring shape corresponding to the coupling hole 51a of the first component 51 and inserted into the coupling hole 51a, and the second wedge 120 is coupled to the second component 55. It is provided in a ring shape corresponding to the ball (55a) is inserted into the coupling hole (55a). The inner diameter of the first wedge 110 and the second wedge 120 is the same. Open portions 119 and 129 are formed in the first and second wedges 110 and 120 in the longitudinal direction, respectively, to impart elasticity to the first and second wedges 110 and 120. One side inner circumferential surface edge portion 111 of the first wedge 110 is tapered inward, and the other side surface 113 is tapered outward. Then, one side inner circumferential surface edge portion 121 of the second wedge 120 is tapered inward. The tapered edge portion 111 of the bolt 130 to be described later is inserted into the tapered edge portion 111 of the first wedge 110, and the first wedge (tapered edge portion 121 of the second wedge 120 is inserted). The tapered other side 113 of 110 is inserted. Thus, the first and second wedges (110, 120) is expanded radially when the external force is applied to the inner surface of the coupling holes (51a, 55a) of the first and second components (51, 55), which will be described later.

The bolt 130 has a body 131, a taper portion 134, and a head 137. The body 131 penetrates the first and second wedges 110 and 120, and the diameter of the body 131 is the first and the second to easily insert the body 131 into the first and second wedges 110 and 120. 2 is formed slightly smaller than the inner diameter of the wedge (110,120). The tapered portion 134 extends and is formed at one end of the body 131, and is formed to be inclined in a shape in which the diameter increases toward the outside of the body 131. The head 137 extends and is formed at the end of the tapered portion 134 and is formed to have an outer diameter larger than that of the first wedge 110. The reason why the outer diameter of the head portion 137 is formed larger than the outer diameter of the tapered portion 134 is to prevent the head portion 137 from being inserted into the coupling hole 51a of the first component 51. On the outer circumferential surface of the body 131, teeth 131a are formed.

The nut 140 has a tooth 141 formed on an inner circumferential surface thereof and is fastened to the other end side of the body 131 exposed to the outside of the second wedge 120. The outer diameter of the nut 140 is larger than the outer diameter of the second wedge 120, to prevent the nut 140 from being inserted into the coupling hole 55a of the second part 55.

Coupling the two components using the wedge-shaped coupling member according to the first embodiment of the present invention will be described with reference to FIGS. 4A and 4B.

As shown in FIG. 4A, after inserting the first and second wedges 110 and 120 into the coupling holes 51a and 55a of the first and second components 51 and 55, respectively, the body of the bolt 130 ( 131 is inserted into the first and second wedges (110, 120). Then, the nut 140 is fastened to the other end side of the body 131 exposed to the outside of the second part 55, and then the nut 140 is rotated by applying an external force to rotate the bolt 130 to the body 131. Move to the other end side of.

Then, as shown in FIG. 4B, since the tapered portion 134 of the bolt 130 is inserted into the tapered edge portion 111 of the first wedge 110, the first wedge 110 extends in the radial direction. While being pressed against the inner surface of the coupling hole (51a) of the first component (51). Further, since the tapered other side 113 of the first wedge 110 is inserted into the tapered edge portion 121 of the second wedge, the second wedge 120 extends in the radial direction and thus the second part 55. Is pressed against the inner surface of the coupling hole 55a. Then, between the inner surface of the coupling hole 51a of the first component 51 and the outer surface of the first wedge 110, the inner surface of the coupling hole 55a of the second component 55 and the outer surface of the second wedge 120. Since there is no gap between the inner surfaces of the first and second wedges 110 and 120 and the outer surface of the body 131 of the bolt 130, the first component 51 and the second component 55 may be coupled to each other. It does not flow in the radial direction of 51a, 55a.

Since one side inner peripheral surface edge portion 111 of the first wedge 110 is tapered inward, the tapered portion 134 is easily inserted into the first wedge 110. In addition, since one side inner circumferential surface edge portion 121 of the second wedge 120 is tapered inward, the other tapered side surface 113 of the first wedge 110 is easily inward of the second wedge 120. Is inserted.

Second embodiment

Figure 5 is a perspective view of the wedge-shaped coupling member according to a second embodiment of the present invention, Figure 6 is a cross-sectional view of the line "BB" of Figure 5, Figure 7a and 7b is a wedge according to the second embodiment of the present invention Figure 2 shows the joining of two parts using a type coupling member.

As shown, the wedge-shaped coupling member 200 according to the second embodiment of the present invention is a pressing ring 250, the first wedge 210, the second wedge 220, the bolt 230 and the nut 240 The first component 51 and the second component 55 are integrally coupled to each other with coupling holes 51a and 55a having the same shape.

The pressing ring 250 has a predetermined length and is formed in a shape corresponding to the coupling holes 51a and 55a of the first and second components 51 and 55 to couple the coupling holes of the first and second components 51 and 55. It is inserted in 51a, 55a. An opening 251 is formed in the pressing ring 250 along the length direction, and the opening 251 allows the pressing ring 250 to have elasticity so that the pressing ring 250 extends in the radial direction. At this time, both end portions 251a and 251b of the opening portion 251 are formed to be tapered in the form of decreasing width toward the inner side. When an external force acts on the pressing ring 250, the pressing ring 250 expands in a radial direction, and its outer surface is pressed onto the inner surfaces of the coupling holes 51a and 55a of the first and second parts 51 and 55. This will be described later.

The first and second wedges 210 and 220 are provided in a ring shape and inserted into one end side and the other end side of the pressing ring 250, respectively. Insertion protrusions 211 and 221 are formed on the outer circumferential surfaces of the first and second wedges 210 and 220, respectively, and the insertion protrusions 211 and 221 are formed to correspond to both end sides 251a and 251b of the opening portion 215, respectively. 215 is inserted into both end portions 251a and 251b, respectively. Thus, when the insertion protrusions 211 and 221 are inserted into both end portions 251a and 251b of the opening portion 251 and the insertion protrusions 211 and 221 are inserted into the center portion side of the opening portion 251, the opening portions 251 are opened. The compression ring 250 is to be expanded. Then, the outer surface of the pressing ring 250 is pressed to the inner surfaces of the coupling holes 51a and 55a of the first and second components 51 and 55.

The bolt 230 has a body 231 and a head portion 235 extending from one end of the body 231. The body 231 penetrates the first and second wedges 210 and 220, and an outer diameter of the head 235 is larger than an outer diameter of the pressing ring 250. The reason why the outer diameter of the head 235 is formed larger than that of the pressing ring 250 is to prevent the head 235 from being inserted into the coupling hole 51a of the first part 51. When the body 231 is inserted into the first and second wedges 210 and 220, the diameter of the body 231 is formed such that the outer surface of the body 231 contacts the inner surfaces of the first and second wedges 210 and 220. A tooth 231a is formed on an outer circumferential surface of the body 231.

The nut 240 has a tooth 241 formed on an inner circumferential surface thereof and is fastened to the other end side of the body 231 exposed to the outside of the second wedge 220. The outer diameter of the nut 240 is formed to be larger than the outer diameter of the crimping ring 250 to prevent the nut 240 from being inserted into the coupling hole 55a of the second part 55.

Coupling the two components using the wedge-shaped coupling member according to the second embodiment of the present invention will be described with reference to FIGS. 7A and 7B.

As shown in FIG. 7A, the pressing rings 250 are inserted into the coupling holes 51a and 55a of the first and second components 51 and 55. In addition, the first and second wedges 210 and 220 are inserted into the both ends of the pressing ring 250, wherein the insertion protrusions 211 and 221 of the first and second wedges 210 and 220 are opened. Both ends 251a and 255b of the part 251 are inserted. Then, the nut 240 is fastened to the other end side of the body 231 exposed to the outside of the second part 55, and then the nut 240 is rotated by applying an external force to rotate the bolt 230 to the body 231. Move to the other end side of.

Then, as shown in Figure 7b, the insertion projections (211, 221) of the first and second wedges (210, 220) are inserted into the central portion at both end sides (251a, 251b) of the open portion 251 of the pressing ring 250, respectively Therefore, as the pressing ring 250 is expanded, the pressing ring 250 is compressed to the inner surfaces of the coupling holes 51a and 55a of the first and second components 51 and 55. Then, between the inner surface of the coupling holes 51a and 55a of the first and second components 51 and 55 and the outer surface of the pressing ring 250, the inner surface of the first and second wedges 210 and 220 and the bolt 230 Since there is no gap between the outer surfaces of the body 231, the first component 51 and the second component 55 do not flow in the radial direction of the coupling holes 51a and 55a.

Since both end portions of the insertion protrusions 211 and 221 of the first and second wedges 210 and 220 and the open ends 251 of the compression ring 250 are tapered to correspond to each other, the insertion protrusions 211 and 221 of the first and second wedges 210 and 220 are respectively tapered. ) Is easily inserted into both ends of the opening portion 251 of the compression ring 250.

As described above, the wedge-shaped coupling member according to the present invention is inserted into the coupling hole formed in the component, so that the radial expansion by the external force, the outer surface of the wedge is pressed on the inner surface of the coupling hole. Then, there is no gap between each part and the wedge so that each part does not flow at all.

In the above, the present invention has been described in accordance with one embodiment of the present invention, but those skilled in the art to which the present invention pertains have been changed and modified without departing from the spirit of the present invention. Of course.

1 shows a typical bolt and nut joining two parts.

Figure 2 is a perspective view of the wedge-shaped coupling member according to the first embodiment of the present invention.

3 is a cross-sectional view taken along line “A-A” of FIG. 2.

Figures 4a and 4b is shown to combine the two parts using the wedge-shaped coupling member according to the first embodiment of the present invention.

5 is a perspective view of a wedge-shaped coupling member according to a second embodiment of the present invention.

FIG. 6 is a cross-sectional view taken along line “B-B” of FIG. 5.

Figures 7a and 7b is shown to combine the two parts using a wedge-shaped coupling member according to a second embodiment of the present invention.

Explanation of symbols on main parts of drawing

110,210: first wedge 120,220: second wedge

130,230: Bolt 140,240: Nut

250: crimping ring

Claims (5)

In the wedge-shaped coupling member for integrally coupling the first and second components each formed with a coupling hole, The wedge-shaped coupling member, It is formed in a shape corresponding to the coupling hole of the first part is inserted into the coupling hole of the first part and expands when an external force is applied, the ring shape having elasticity that the outer surface of the first hole is pressed against the inner surface of the coupling hole of the first part First wedge; It is formed in a shape corresponding to the coupling hole of the second component is inserted into the coupling hole of the second component and expands when an external force is applied, the ring shape having elasticity that the outer surface is pressed against the inner surface of the coupling hole of the second component Second wedge; A body having teeth formed on an outer circumferential surface of the first and second wedges, extending from one end of the body, and having a taper portion and a taper formed in a shape of increasing in diameter toward the outside of the body. A bolt extending and formed at an end of the portion and including a head having an outer diameter greater than the outer diameter of the first wedge; A tooth is formed on an inner circumferential surface thereof and is fastened to the other end side of the body exposed to the outside of the second wedge, and has a larger outer diameter than the outer diameter of the second wedge so that the bolt is rotated by an external force. Moving to the other end side of the tapered portion to be inserted into the inner circumferential surface of the first wedge, and at the same time the first wedge is inserted into the inner circumferential surface of the second wedge, the nut having a first and second wedge, Wedge-shaped coupling member, characterized in that. The method of claim 1, One side inner circumferential surface edge portion of the first wedge is tapered inward so that the tapered portion of the bolt is easily inserted, and the entire other side is tapered outward. One side inner peripheral surface edge portion of the second wedge is tapered inward so that the other side surface of the second wedge is easily inserted. Wedge-shaped coupling member, characterized in that the opening is formed in the first and second wedge along the longitudinal direction. In the wedge-shaped coupling member for integrally coupling the first and second components each formed with a coupling hole, The wedge-shaped coupling member, It is formed in a shape corresponding to the coupling hole of the first and second components and is inserted into the coupling hole of the first and second components, and expands when an external force is applied to the inner surface of the coupling hole of the first and second components. Compression ring having an elasticity that the outer surface is compressed; Ring-shaped first and second wedges respectively inserted into one end side and the other end side of the crimping ring to extend one end side and the other end side of the crimping ring, respectively; A bolt having a body having teeth formed on an outer circumferential surface of the first and second wedges and extending from one end of the body and having a larger outer diameter than an outer diameter of the pressing ring; A tooth is formed on an inner circumferential surface and is fastened to the other end side of the body exposed to the outside of the second wedge, and is formed with an outer diameter larger than the outer diameter of the crimping ring and rotated by an external force. And a nut extending to the pressing ring to move the end side so that the first and second wedges are respectively inserted into the pressing ring. The method of claim 3, wherein The pressing ring is formed with an opening along the longitudinal direction, the outer peripheral surface of the first and second wedge has a wider than the width of the opening portion is inserted into the opening is formed with an insertion protrusion for expanding the pressing ring Wedge-shaped coupling member characterized in that. The method of claim 4, wherein Both ends of the open portion are tapered in a shape in which the width decreases toward the inside, and the insertion protrusions of the first and second wedges are formed in a wedge shape corresponding to one end side and the other end side of the open portion, respectively. Coupling member.