TWM649388U - Multifunctional expansion bolt set - Google Patents

Abstract

A multifunctional expansion bolt set is provided to solve the problem of idling of conventional expansion bolts and the screwing of only a single nut. The system includes: a cylinder with a hollow body and at least one open groove at one end; a screw with a threaded portion, at least a part of the threaded portion protrudes from the first end of the cylinder, and the third end of the screw The two ends have a tapered portion that gradually expands radially toward the end surface. The maximum radial dimension of the tapered portion is greater than the radial dimension of the inner wall of the second end of the barrel. The screw has at least one coupling portion. The cross-section of the part is formed into a non-perfect circular shape and fits into the opening groove; and a connecting piece has an internal threaded hole, and the internal thread of the internal threaded hole is partially threaded with the threaded part of the screw rod.

Description

Multifunctional expansion bolt set

This invention relates to a multi-functional expansion bolt set, in particular, an expansion bolt set that prevents bolts from idling and can be assembled with a variety of bolts or nuts.

The conventional expansion bolt set places a screw rod in a cylinder. The screw rod has a tapered head. The screw rod and the cylinder body are buried together in a hole of a fixed object. The threaded part of the screw rod protrudes from the hole. On the surface of the fixed object, the protruding threaded portion can be screwed by a nut, so that a fixed object can be fixed to the fixed object. The conventional expansion bolt set is commonly used on the exterior wall of a building, such as : Signboards, shelves for placing cooling machines, etc.

When the conventional expansion bolt set is used, during the threading process of the nut, since there is no anti-slip component between the outer surface of the screw and the inner wall of the cylinder, the nut is tightened when force is applied. When it closes to the threaded part of the screw, the screw will rotate synchronously with the nut, so that the nut cannot fasten the fixed object to the surface of the fixed object. Therefore, there is a sound when the fixed object falls. .

In addition, the conventional expansion bolt group has the threaded portion of a screw rod protruding from the surface of the fixed object. Therefore, the fixed object can only be fixed to the surface of the fixed object through a nut. This fixing method is It cannot be changed, resulting in the fixation method being unable to respond to different needs to achieve diversified fixation methods.

Furthermore, since the screw rod placed in the shell tube only has a single size, when the protruding length or thread diameter of the screw rod needs to be changed, workers need to first embed and protrude the screw rod. The screw is ground flat, and then the expansion bolt set of different specifications is re-implanted in the adjacent position. In this way, Not only is it time-consuming, but the re-implanted expansion bolt group is also adjacent to the previously implanted expansion bolt group, resulting in insufficient adhesion of the re-implanted expansion bolt group.

In view of this, it is indeed necessary to improve the conventional expansion bolt set.

In order to solve the above problems, the main purpose of this invention is to provide a multifunctional expansion bolt set. There is at least one connecting portion between the outer surface of the screw and the inner wall of the barrel, so that the connecting piece can be connected to the screw. The threaded portion can prevent the screw rod from rotating synchronously with the connecting piece, thereby making assembly easier.

The second purpose of this invention is to provide a multi-functional expansion bolt set that can replace the connecting parts of different structures according to different needs of use, so as to achieve a variety of fixing methods for different needs.

The directionality or similar terms mentioned throughout this creation, such as "front", "back", "left", "right", "upper (top)", "lower (bottom)", "inner", "outer" , "side", etc. mainly refer to the directions of the attached drawings. Each directionality or similar terms are only used to assist in explaining and understanding the various embodiments of the present invention, and are not used to limit the present invention.

The use of the quantifier "a" or "one" in the components and components recorded in the entire text of this creation is only for convenience of use and to provide the usual meaning of the scope of this creation; in this creation, it should be interpreted as including one or at least one, and single The concept of also includes the plural unless it is obvious that something else is meant.

The multifunctional expansion bolt set of the present invention may include: a cylinder with a first end and a second end opposite each other, and a hollow body is formed between the first end and the second end. The two ends have at least one open slot, and the at least one open slot forms an opening on the end surface of the second end; a screw has an opposite first end and a second end, and the first end has a threaded portion, The snail At least a part of the groove protrudes from the first end of the barrel, and the second end of the screw has a tapered portion that gradually expands radially toward the end face, and the maximum radial dimension of the tapered portion is larger than the barrel. The radial dimension of the inner wall of the second end of the body, the screw rod has at least one joint part, the cross section of the screw rod forms a non-perfect round shape at the joint part, the joint part is fitted with the opening groove; and a The connecting piece has an opposite first end and a second end. The second end has an internal thread. The internal thread is partially threaded with the threaded part of the screw. The first end has a connecting part.

Accordingly, in the multifunctional expansion bolt set of the present invention, since the barrel has at least one open slot at the second end, and the screw has the connecting portion, the connecting portion can be fitted with the open slot, so, The screw and the barrel do not rotate relative to each other and are easy to assemble. Moreover, the multi-functional expansion bolt set of this invention can also be replaced with connecting parts of different structures according to different needs of use, so as to achieve the effect of a variety of different fixing methods.

Wherein, the outer surface of the cylinder has a rough portion. In this way, the cylinder and the hole wall of the fixed object have better adhesion.

Wherein, the coupling portion is at least one protrusion protruding from the radial surface of the screw, and the number of the protrusions is the same as the number of the opening slots.

Wherein, the convex body extends to the tapered part. In this way, the connecting portions forming the protrusions can be fitted into the corresponding opening slots, so that the screw and the cylinder do not rotate relative to each other.

Wherein, the cross-sectional shape of the tapered part is a polygon, the number of sides of the polygon is the same as the number of the opening slots, and the corners of the polygon form the joint part. In this way, the joint portion forming the joint angle can fit into the opening groove, so that the screw and the barrel do not form a relative rotation effect.

Wherein, the first end of the connecting piece has a driving part. In this way, the digital driving unit can drive the connecting member to rotate, so that the multi-functional expansion bolt group can be tightly coupled. The function of a hole in a fixed object.

The multifunctional expansion bolt set of the present invention can also include an external component. The external component has a threaded part and an external part. The threaded part is screwed with the internal thread of the connecting part, and the external part is used for jointing. A fixed object. In this way, the external connecting part can be used to connect an object to be fixed.

Wherein, the connecting portion of the connecting piece is a thread extending integrally with the internal thread. In this way, the internal thread can be used to directly screw an external component, and the external component can engage an object to be fixed.

Wherein, the connecting part of the connecting piece is a screw hole with an internal thread, and the aperture of the connecting part is different from the aperture of the internal thread. In this way, the connecting member with different hole diameters can be replaced according to different needs of use, and the connecting portion can be connected to a fixed object.

Wherein, the connecting part of the connecting piece is a stud with external threads. In this way, the connecting piece with different outer diameters and threads can be replaced to fix a fixed object according to different needs of use.

[This creation]

1:Cylinder

1a: first end

1b:Second end

11: Hollow trunk

12: Open slot

13:Rough part

2:Screw

2a: first end

2b: Second end

21:Thread part

22:Tapered part

23:joint part

3: Connectors

3a: first end

3b: Second end

31: Internal thread

32:Connection part

33:Drive Department

4:External parts

41:Thread part

42:External connection department

5: Connectors

51: Internal thread

52:Connection part

6: Connectors

61: Internal thread

62:Connection part

F: Fixture

H: hole

N: Unscrewed section

[Figure 1] An exploded perspective view of the first embodiment of this invention.

[Figure 2] A combined cross-sectional view of the first embodiment of this invention.

[Figure 3] A diagram of the first embodiment of the present invention being fixed to a fixed object.

[Figure 4] A three-dimensional view of another embodiment of the screw of this invention.

[Figure 5] A diagram of the first embodiment of the present invention connected to an external component.

[Figure 6] Cross-sectional view of the second embodiment of this invention.

[Figure 7] Cross-sectional view of the third embodiment of this invention.

In order to make the above and other purposes, features and advantages of the present invention more obvious and understandable, preferred embodiments of the present invention are cited below and explained in detail with reference to the attached drawings.

The directionality mentioned in this creation or its similar terms, such as "front", "back", "left", "right", "upper (top)", "lower (bottom)", "inner", "outer", "Side", etc. mainly refer to the directions of the attached drawings. Each directionality or similar terms are only used to assist in explaining and understanding the embodiments of the present invention, and are not used to limit the present invention.

Please refer to Figures 1 and 2, which is the first embodiment of the multifunctional expansion bolt set of the present invention. It can include a cylinder 1, a screw rod 2 and a connecting piece 3. The screw rod 2 extends through the A hollow body 11 of the barrel 1, the connector 3 can be screwed with the screw 2.

The cylinder 1 has a first end 1a and a second end 1b opposite to each other. The cylinder 1 between the first end 1a and the second end 1b forms a penetrating hollow body 11. The cylinder 1 1 is provided with at least one opening groove 12 at the second end 1b, and the at least one opening groove 12 forms an opening at the end surface of the second end 1b, so that the cylinder 1 can be expanded and deformed at the second end 1b. In this embodiment, the barrel 1 has four opening slots 12 distributed at equal angles at the second end 1b. In this way, the barrel 1 is more easily expanded and deformed and deformed evenly. Preferably, the outer surface of the barrel 1 has a roughened portion 13, which can be embossed, protruding strips, etc., so that the barrel 1 has better adhesion with the hole wall of the fixture.

The screw 2 has an opposite first end 2a and a second end 2b. The first end 2a has a threaded portion 21 so that the screw 2 can penetrate the hollow body 11 of the barrel 1. And at least part of the threaded portion 21 protrudes from the first end 1a of the barrel 1. The second end 2b has a tapered portion 22 that gradually expands radially toward the end surface. The maximum diameter of the tapered portion 22 The radial size is larger than the radial size of the inner wall of the second end 1b of the cylinder 1, and the cross section of the tapered portion 22 can be polygonal or polygonal. Round shape is not limited in this creation. The screw rod 2 has at least one connecting portion 23 . The cross section of the screw rod 2 at the connecting portion 23 is formed into a non-circular shape. The connecting portion 23 can be fitted with the opening groove 12 .

As shown in Figures 1 and 2, the cross-section of the tapered portion 22 is the same circle as the cross-section of the inner wall of the barrel 1, and the connecting portion 23 can be protruding from the radial surface of the screw 2. There is at least one convex body, and the connecting portion 23 forming the convex body can also extend to the tapered portion 22 (not shown), which is not limited by this invention. Preferably, the number of the protrusions is the same as the number of the opening grooves 12 of the barrel 1, so that the connecting portions 23 forming the protrusions can be fitted into the corresponding opening grooves 12. In this way, the The screw 2 and the cylinder 1 will not rotate relative to each other.

Or, in another embodiment of the screw 2 shown in Figure 4, the cross-sectional shape of the tapered portion 22 is a polygon, and the number of sides of the polygon is the same as the number of the opening grooves 12 of the barrel 1. The polygonal corner can form the joint portion 23, and the joint portion 23 can correspond to each of the opening grooves 12 of the barrel 1. In this way, the joint portion 23 forming the joint can fit with the opening groove 12, so that the There is no relative rotation between the screw 2 and the cylinder 1, which is understandable to those with ordinary knowledge in the technical field to which this invention belongs, and will not be described in detail.

Please continue to refer to Figures 1 and 2. The connector 3 has an opposite first end 3a and a second end 3b. The second end 3b has an internal thread 31, and the internal thread 31 can be connected with The threaded portion 21 of the screw 2 is partially threaded, and the first end 3a has a connecting portion 32. In this embodiment, the connecting portion 32 can be a thread extending integrally with the internal thread 31. That is, the connector 3 can be partially threaded by the internal thread 31 of the second end 3b and the threaded portion 21 of the screw 2 protruding from the barrel 1, so that the internal thread of the connector 3 31 also retains an unthreaded section N that is not screwed with the screw 2, and the unthreaded section N can be screwed with an external member 4. Preferably, the first end 3a of the connecting member 3 has a driving part 33, and the driving part 33 may be a cap head.

In this embodiment, the multifunctional expansion bolt set of the present invention can also include an external component 4. The external component 4 has a threaded part 41 and an external part 42. The threaded part 41 can be connected with The internal thread 31 of the connector 3 is threaded, that is, the threaded portion 41 can be threaded to the above-mentioned unthreaded section N (as shown in Figure 2), and the external portion 42 can engage a fixed object. .

Please refer to Figure 3, which is an example of using the multi-functional expansion bolt set according to the first embodiment of the present invention. A hole H can be drilled in a fixed object F to connect the combined cylinder 1, The screw rod 2 and the connecting piece 3 are inserted into the hole H from the second ends 1b, 2b, 3b, and the connecting piece 3 is rotated by the driving part 33, so that the tapered portion 22 of the screw rod 2 is as arrowed. Ascending in the direction shown, since the connecting portions 23 of the screw 2 are respectively fitted into the corresponding opening grooves 12, the tapered portion 22 can force the second end 1b of the barrel 1 to form Radially expand until the connecting piece 3 cannot rotate, so that the cylinder 1 can be firmly fixed in the hole H.

Please refer to Figure 5, when the cylinder 1 is firmly fixed in the hole H, the unthreaded section N of the connecting piece 3 can be threaded by the threaded portion 41 of the external piece 4, so that The external component 4 can fix a fixed object to the fixed object F.

Please refer to Figure 6, which is the second embodiment of the connector of the present invention. Workers can remove the connector 3 and the external connector 4, and combine a connector 5 with the screw 2 . The connector 5 has an internal thread 51 and a connecting portion 52. The internal thread 51 can be threaded with the threaded portion 21 of the screw 2, so that the connector 5 has different connecting portions 52, and the connector 5 has different connecting portions 52. The connecting portion 52 can engage an object to be fixed. In this embodiment, the connecting part 52 can be a screw hole, and the hole diameter of the connecting part 52 forming the screw hole can have a variety of different sizes. In this way, the connection part 52 with different hole diameters can be replaced according to different needs of use. Item 5.

Please refer to Figure 7, which is the third embodiment of the connector of the present invention. The worker can remove the connector 3 and the first external component 4, and connect a connector 6 to the screw 2. combine. The connector 6 has an internal thread 61 and a connecting portion 62. The internal thread 61 can be threaded with the threaded portion 21 of the screw 2, so that the internal thread 61 has different connecting portions 62, and the internal thread 61 has different connecting portions 62. The connecting portion 62 can engage an object to be fixed. In this embodiment, the connecting portion 62 can be an external A threaded stud, and the outer diameter and thread of the connecting portion 62 forming the stud can have many different sizes. In this way, the external parts and fixings with different outer diameters and threads can be replaced according to different needs of use. A fixed object.

To sum up, in the multifunctional expansion bolt set of the present invention, since the barrel has at least one open slot at the second end, and the screw has the joint part, the joint part can be fitted with the open slot, In this way, the screw and the barrel do not rotate relative to each other, making assembly easy. Moreover, the multi-functional expansion bolt set of this invention can also be replaced with connecting parts of different structures according to different needs of use, so as to achieve the effect of a variety of different fixing methods.

Although the present invention has been disclosed using the above-mentioned preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make various changes and modifications relative to the above-described embodiments without departing from the spirit and scope of the invention. The technical scope protected by the creation, therefore, the protection scope of the creation shall include all changes within the literal and equivalent scope recorded in the appended patent application scope.

1:Cylinder

1a: first end

1b:Second end

11: Hollow trunk

12: Open slot

13:Rough part

2:Screw

2a: first end

2b: Second end

21:Thread part

22:Tapered part

23:joint part

3: Connectors

3a: first end

3b: Second end

31: Internal thread

32:Connection part

33:Drive Department

4:External parts

41:Thread part

42:External connection department

Claims (10)

A multifunctional expansion bolt set, including: a cylinder with a first end and a second end opposite each other. The first end and the second end form a penetrating hollow body, and the second end is It has at least one opening groove, and the at least one opening groove forms an opening on the end surface of the second end; a screw rod has an opposite first end and a second end, and the first end has a threaded part, and the threaded part At least a part of the screw protrudes from the first end of the barrel, and the second end of the screw has a tapered portion that gradually expands radially toward the end face. The maximum radial dimension of the tapered portion is larger than that of the barrel. The radial dimension of the inner wall of the second end, the screw rod has at least one joint part, the cross section of the screw rod at the joint part forms a non-circular shape, the joint part fits into the opening groove; and a connecting piece , has an opposite first end and a second end, the second end has an internal thread, the internal thread is partially threaded with the threaded part of the screw, and the first end has a connecting part. The multifunctional expansion bolt set of claim 1, wherein the outer surface of the barrel has a rough portion. The multifunctional expansion bolt set of claim 1, wherein the connecting portion is at least one protrusion protruding from the radial surface of the screw, and the number of the protrusions is the same as the number of the opening slots. The multifunctional expansion bolt set of claim 3, wherein the protrusion extends to the tapered portion. The multifunctional expansion bolt set of claim 1, wherein the cross-sectional shape of the tapered part is a polygon, the number of sides of the polygon is the same as the number of the opening slots, and the corners of the polygon form the joint part. The multifunctional expansion bolt set of claim 1, wherein the first end of the connecting member has a driving part. If the multi-functional expansion bolt set of claim 1 further includes an external component, the external component The component has a threaded part and an external part, the threaded part is threaded with the internal thread of the connecting piece, and the external part is used to join a fixed object. The multifunctional expansion bolt set of claim 1, wherein the connecting portion of the connecting member is a thread extending integrally with the internal thread. The multifunctional expansion bolt set of claim 1, wherein the connecting part of the connecting member is a screw hole with an internal thread, and the aperture of the connecting part is different from the aperture of the internal thread. The multifunctional expansion bolt set of claim 1, wherein the connecting portion of the connecting member is a stud with external threads.

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