KR20020071040A - Bolt assembly - Google Patents

Abstract

PURPOSE: A bolt assembly is provided to prevent the rotation of a washer and a bolt together with a nut while fastening the bolt. CONSTITUTION: A bolt assembly includes a bolt element(4) having a head(41), and a sank(42), the sank having a connection section(421) connected to the head, a screw section(422) extended from the connection section and having a screw processed surface on an outer periphery, a damageable tip(423) extended from the screw section and formed with a tooth part extended in a plurality of axial direction with an angle, and an annular groove(424) formed between the screw section and the damageable section, a washing(5) extended outwardly and radially from the sank of the bolt element and having an object facing surface(51) and a nut facing surface(52), the object facing surface of the washer is formed with a plurality of first sliding-preventing protrusions(53) separated from each other by a predetermined angle, and a nut(6) screw-coupled with the screw section of the sank, the nut having first and second facing surfaces(61,62) apart from each other with respect to the nut facing surface of the washer. The second surface of the nut forces the nut facing surface of the nut to the head of the bolt element.

Description

Bolt Assembly {BOLT ASSEMBLY}

The present invention relates to a bolt assembly, in particular a tension bolt assembly capable of preventing the washer and shank of the bolt member from rotating with the nut.

In the manufacture of steel frames to improve manufacturing and safety, tension bolt assemblies are generally used to connect articles.

1 and 2, a conventional tension bolt assembly 1 is used to connect the first and second articles 2, 3, which articles 2, 3 are through holes 21, 31. And align with opposite outer surfaces 22 and 32, respectively. As is known, the bolt assembly 1 comprises a bolt member 11, a washer 12 and a nut 13. The bolt member 11 includes a shank and a head 111 abutting the outer surface 32 of the second article 3, the shank being connected to the head 111 and extending into the through hole 21. ), Outwardly threaded section 113 connected to connecting section 112, breakable section 114 connected to outwardly threaded section 113, and outwardly threaded section 113 and breakable It has an annular groove 115 disposed between the sections 114. The outwardly threaded section 113 protrudes from the outer surface 22 of the first article 2. The breakable section 114 is formed with a plurality of axially extending grooves.

When the bolt assembly 1 is used to connect the first and second articles 2, 3 to each other, the shank of the bolt member 11 firstly has through holes aligned in the first and second articles 2, 3. It extends through 21, 31, and the head 111 abuts on the outer surface 32 of the first article 3. The washer 2 is then sleeved on an outwardly threaded section 113 protruding from the outer surface 22 of the first article 2, and the nut 13 is outwardly threaded section 113. ) And screwed together. As a result, a tool (not shown) for rotating the nut 13 is used, so that the nut 13 forces the washer 12 to abut the outer surface 22 of the first article 2. In this respect, the bolt assembly 1 loosely connects the first and second articles 2, 3. Thereafter, a bolt tightening tool 8, which is specific to the tension bolt and has inner and outer sleeves 81 and 82, is used to engage the breakable section 114 and the nut 13, respectively. The outer sleeve 82 rotates in the direction of driving the nut 13 until a deadlock occurs. Then, the inner side until the breakable section 114 breaks away from the threaded section 13 outwardly in the annular groove 115 position by shear generated by the different movements of the inner and outer sleeves 81, 82. The sleeve 81 is turned in the opposite direction. The bolt assembly 1 is thus fully tightened and in a high tension state.

Although conventional tension bolt assemblies 1 can firmly connect the first and second articles 2, 3 to each other, the outer surfaces 22, 32 of the first and second articles 2, 3 are generally Between the outer surface 22 and the head 111 of the first article 2, and the outer surface 32 and washer of the second article 3, because they are covered with paint or other material for corrosion protection or improved appearance. The frictional force between the (12) is relatively small, so that not only the undesirable mutual rotation of the washer 12 and the nut 13 occurs, but also the rotation of the bolt member 11 and the nut 13 during bolting. . Thus, the fastening force of the bolt assembly 1 cannot be precisely controlled.

Accordingly, it is a primary object of the present invention to provide a bolt assembly that can prevent the washer and bolt member from rotating with the nut during bolt tightening operation.

Thus, the bolt assembly of the present invention comprises a bolt member, washer and nut. The bolt member has a head and a shank. The head has an article opposite side. The shank is a breakable toothed breakable section extending from a plurality of axially extending and angled sections extending from an outwardly threaded section extending from the connecting section, an outwardly threaded section extending from the connecting section. A tip and an annular groove formed in the connection of the outwardly threaded section and the breakable tip. The washer is sleeved on the shank of the bolt member and has a nut opposite side opposite to the article opposite side of the washer. The article opposite sides of the washer are formed with a plurality of non-slip protrusions that are angled apart and extend radially outward with respect to the shank of the bolt member. The nut is threadedly engaged with the threaded section outward of the shank, each having opposing first and second surfaces spaced apart from and close to the nut opposite side of the washer so that the second surface of the nut is opposite the nut of the washer. Forcing the side toward the head of the bolt member.

1 is an exploded perspective view of a conventional tension bolt assembly,

2 is a cross-sectional view of a conventional tension bolt assembly when two articles are connected to each other;

3 is an exploded perspective view of a preferred embodiment of the bolt assembly according to the invention,

4 is a cross-sectional view of a preferred embodiment when two articles are connected to each other.

Explanation of symbols for the main parts of the drawings

4 bolt member 5 washer

6 nut 53 non-slip protrusion

411: non-slip rib 423: breakable tip

424 annular groove 621 annular ring

Other features and advantages of the present invention will become apparent from the following detailed description of the preferred embodiments described above with reference to the accompanying drawings.

3 and 4, a preferred embodiment of the bolt assembly according to the present invention comprises a first and a second article 71 provided with aligned through holes 712, 722 and opposing outer surfaces 711, 721, respectively. 72 applies to linking.

A bolt assembly is shown comprising bolt member 4, washer 5 and nut 6. The bolt member 4 includes a head 41 and a shank 42. The head 41 has a number of non-slip ribs 411 having an article opposing side facing the outer surface 711 of the first article 71, spaced at an angle and extending radially outward with respect to the shank 42. Is formed. Shank 42 has a connecting section 421, an outwardly threaded section 422, a breakable tip 423, and an annular groove 424. The connecting section 421 is connected to the article opposite side of the head 41. The outwardly threaded section 422 extends from the connecting section 421. The breakable tip 423 extends outwardly threaded section 422 and has a number of axially extending and angled spaced teeth. The annular groove 424 is formed at the connection of the outwardly threaded section 422 and the breakable tip 423 and has a predetermined depth. The length of the outwardly threaded section 422 protrudes from the outer surface 721 of the second article 72 so that the shank 42 extends through the aligned through holes 712, 722.

The washer 5 is sleeved on the shank 42 of the bolt member 4 and has an article opposing side 51 and a nut opposing side 52 opposing the article opposing side 51 of the washer 5. . The article facing side 51 of the washer 5 abuts the outer surface 721 of the second article 72. The article facing side 51 and the nut facing side 52 of the washer 5 are formed with a plurality of first and second non-slip protrusions 53, respectively, which are non-slip protrusions 53 at an angle. And extends radially outward with respect to shank 42 of bolt member 4.

The nut 6 is threadedly engaged with the threaded section 422 outwardly of the shank 42 and is opposed to the nut opposing side 52 of the washer 5 and spaced apart from and close to each other. With first and second surfaces 61, 62, the second surface 62 of the nut 6 forces the nut opposite side 52 of the washer 5 towards the head 41 of the bolt member 4. . A shaft disposed on the second surface 62 of the nut 6 around the shank 42 of the bolt member 4 and surrounded by a second non-slip protrusion 53 on the nut opposite side 52 of the washer 5. An annular ring 621 extending in the direction is formed. Thus, the annular ring 621 is in contact with the nut opposite side 52 of the washer 5 and prevents the second non-slip protrusion 53 from interfering with the rotation of the nut 6 relative to the shank 42. do.

When using the bolt assembly of the present invention to secure the first and second articles 71, 72, first the shank 42 extends through the aligned through holes 712, 722, the washer 5 and the nut. 6 is sleeved on the shank 42. Then, a tool (not shown) is used so that the annular ring 621 of the nut 6 abuts the nut opposing side 52 of the washer 5, and thus the article opposing side 51 of the washer 5. The first non-slip protrusion 53 on) is forced to abut the outer surface 721 of the second article 72. The bolt assembly is tightened such that the second non-slip protrusion 53 lies on the outer surface 721 of the second article 72. In addition, the non-slip rib 411 is placed on the outer surface 711 of the first article 71 by the rotation of the nut 6. As a result, the bolt tightening tool 8, which is used in particular with tension bolts and includes inner and outer sleeves 81, 82, is used to engage the breakable tip 423 and the nut 6, respectively. The outer sleeve 82 is rotated in the direction to drive the nut 6 to the deadlock. Then, until the breakable tip 423 breaks away from the outwardly threaded section 422 in the annular groove 424. The inner sleeve 81 rotates in the opposite direction, thereby tightening the bolt assembly against the first and second articles 71, 72.

During tightening of the bolt assembly, the non-slip ribs 411 and the first non-slip protrusions 53 are embedded in the outer surfaces 711, 721 of the first and second articles 71, 72, respectively, and the washer 5 Rotation with the nut 6 is prevented, and the bolt member 4 is also prevented from rotating with the nut 6. Accordingly, the fastening force can be controlled within a predetermined range.

In addition, the washer 5 is provided with first and second non-slip protrusions 53 on both sides thereof, and both the first and second non-slip protrusions 53 are provided with the annular ring 621 of the nut 6. Since it is configured to enclose, the user does not have to care about the orientation of the washer 5 during installation of the bolt assembly. Therefore, the work efficiency can be improved.

Although the present invention has been described above with respect to the most practical and preferred embodiments, it is to be understood that the present invention is not limited to the above-described embodiments, and that various modification configurations may be included within a broad spirit and scope including all modifications and equivalent configurations.

The present invention can prevent the washer and bolt member from rotating with the nut during the bolt tightening operation.

Claims (4)

In the bolt assembly, A bolt member 4 comprising a shank 42 and a head 41 having an article facing side, the shank 42 having a connection section 421 connected to the article facing side of the head 41, and An outwardly threaded section 422 extending from the connecting section 421 and a toothed breakable tip extending from the outwardly threaded section 422 and having a plurality of axially extending and angled arrangements The bolt member (4), having an annular groove (424) formed in the connection portion of the outwardly threaded section (422) and the breakable tip (423); A washer connected on the shank 42 of the bolt member 4 and opposite the article facing side 51 of the washer 5 and the article facing side 51 has a nut facing side 52 ( 5), the article facing side 51 of the washer 5 is formed with a plurality of first non-slip protrusions 53, the plurality of first non-slip protrusions 53 being spaced at an angle and the The washer (5) extending radially outward with respect to the shank (42) of the bolt member (4); A nut 6 threadedly engaged with a section 422 threaded outwardly of the shank 42, the nut 6 being respectively remote to the nut opposite side 52 of the washer 5; With opposing first and second surfaces 61 and 62 spaced apart and close thereto, the second surface 62 of the nut 6 causes the nut opposite side 52 of the washer 5 to be bolted to. Comprising the nut 6, forcing it towards the head 41 of the member 4. Bolt assembly. The method of claim 1, A plurality of second non-slip protrusions 53 are formed on the nut facing side 52 of the washer 5, and the second non-slip protrusions 53 are spaced at an angle and the bolt member 4. Radially outward with respect to shank 42 of Bolt assembly. The method of claim 2, On the second surface 62 of the nut 6 is arranged axially around the shank 42 of the bolt member 4 and surrounded by a second non-slip protrusion 53 of the washer 5. An extending annular ring 621 is formed, the annular ring 621 is in contact with the nut opposing side 52 of the washer 5 and the second non-slip protrusion 53 is attached to the shank 42. To avoid indirect rotation of the nut 6 Bolt assembly. The method of claim 1, A plurality of non-slip ribs 411 are formed on the article-facing side of the head 41 of the bolt member 4, wherein the non-slip ribs 411 are spaced at an angle and are separated from each other of the bolt member 4. Extending radially outward with respect to shank 42 Bolt assembly.