TWI779472B - Expandable Anchoring Device - Google Patents

Abstract

An expandable anchoring device includes a sleeve, a core piece and at least one moving piece. The sleeve has at least one through hole. The core piece is passed through the sleeve and includes a connecting portion, an enlarged portion, and a rod connecting the connecting portion and the enlarged portion. The connecting portion is located outside the sleeve, the enlarged portion is located in the sleeve and includes a first end portion and a second end portion opposite to each other, wherein the outer diameter of the first end portion is greater than the outer diameter of the second end portion, and the second end portion The two ends are connected to the rod. The moving part is arranged between the sleeve and the core part and partly located in the through hole. When the invention is located in a concave hole of a wall and the connecting part is pulled, the enlarged part will push against the moving part, so that the moving part protrudes out of the through hole and abuts against the hole wall of the concave hole, so as to make the expansion type anchor The device connects the wall body and an object connected to the connecting part.

Description

Expandable anchoring device

The present invention relates to building auxiliary equipment; in particular, it relates to an expandable anchoring device.

Known expandable anchoring devices are usually detachably fixed in a borehole and additionally connected to other objects. For example, some construction workers, police and firefighters, and even ordinary people can fix objects on the wall or ceiling through anchoring devices. The objects can be but not limited to hanging rings, safety equipment, wall decorations or fitness equipment etc.

The expansion bolt 10 disclosed in U.S. Patent No. US 7011281 B2 is to apply an external force to the ring 30 to move the central plug 14 in a direction away from the external plugs 16, 17, and then the outer surface 13 of the central plug 14 Push the outer plugs 16, 17 to expand outwards and abut against the hole wall 64 of the borehole 61, so as to achieve the purpose of fixing. When desiring to dismantle the expansion bolt 10, it is only necessary to apply a reverse external force, such as hammering the bushing 62 with a chisel-like tool 65, forcing the center plug 14 to move towards the direction close to the outer bearing seats 16, 17, so that the outer Bearing blocks 16 and 17 can be removed from bore 61 by moving radially inwards.

However, the external plugs 16, 17, the bushing 62 and the neck 20 of the expansion bolt 10 are all connected to each other by the steel cable 22, resulting in a large number of parts in the overall structure, high manufacturing costs and complicated assembly procedures; The dust particles easily affect the interface between the external plugs 16, 17 and the central plug 14 and affect the smoothness of relative movement. Therefore, it is necessary to solve the above situation.

In view of this, the purpose of the present invention is to provide an expandable anchoring device, which has the characteristics of easy assembly and combination and high smooth operation.

To achieve the above purpose, the present invention provides an expandable anchoring device, which includes a sleeve, a core member and at least one moving member. Wherein, the sleeve has at least one through hole, and the at least one through hole passes through the inner peripheral surface and the outer peripheral surface of the sleeve. The core piece is passed through the sleeve in a manner that can move along the axial direction of the sleeve, and includes a connecting portion, an enlarged portion, and a rod connecting the connecting portion and the enlarged portion. The connecting portion is located outside the sleeve; the enlarged portion is located in the sleeve and includes a first end portion and a second end portion opposite to each other, wherein the outer diameter of the first end portion is larger than the second end portion and the second end is connected to the rod. The at least one moving part is disposed between the sleeve and the core part and partly located in the at least one through hole.

The effect of the present invention is that the parts of the expansion type anchoring device of the present invention are simplified, and the assembly is relatively simple and quick; in addition, the sleeve can prevent external dust or fine particles from adhering to the enlarged part of the core and the at least one Between the moving parts, the movement of the overall structure is smoother.

In order to illustrate the present invention more clearly, preferred embodiments are given and detailed descriptions are given below in conjunction with drawings. Please refer to FIG. 1 to FIG. 6, which is an expansible anchoring device 100 according to a preferred embodiment of the present invention, which is used to be combined with a concave hole 200a of a wall 200, and to be connected with other objects. The expandable anchoring device 100 includes a sleeve 10 , a core member 20 and at least one moving member 30 .

The sleeve 10 includes a first cylinder 12 and a second cylinder 14, wherein the first cylinder 12 has a ring recess 121, and the ring recess 121 is located on the outer peripheral surface of the first cylinder 12; The cylinder body 14 has a ring protrusion 141 located on the inner peripheral surface of the second cylinder body 14 . The ring protrusion 141 of the second cylinder 14 is engaged in the ring recess 121 of the first cylinder 12 , so that the second cylinder 14 is detachably combined with the first cylinder 12 .

The first barrel 12 of the sleeve 10 has a shoulder 122 and at least one through hole 124 . The shoulder 122 is located on the inner peripheral surface of the first barrel 12 and close to the ring recess 121 . The number of through holes 124 in this embodiment is plural, and these through holes 124 are arranged equidistantly on the cylinder wall of the first cylinder 12, and these through holes 124 pass through the inner circumference of the sleeve 10 surface and peripheral surface.

The core 20 is passed through the sleeve 10 in a manner that can move along the axial direction of the sleeve 10 . The core member 20 includes a connecting portion 22 , a rod portion 24 and an enlarged portion 26 , wherein the connecting portion 22 and the enlarged portion 26 are connected to different ends of the rod portion 24 . The connecting portion 22 is located outside the sleeve 10 and is closer to the second barrel 14 of the sleeve 10 . The connecting portion 22 is a ring structure for connecting other objects, including but not limited to ropes or hooks. The enlarged portion 26 is located in the first barrel 12 of the sleeve 10 and has an outer diameter larger than that of the rod portion 24 . More specifically, the enlarged portion 26 includes a first end portion 262 and a second end portion 264 opposite to each other, wherein the enlarged portion 26 is connected to the rod portion 24 with its second end portion 264, and the enlarged portion 26 The outer diameter of the portion 26 gradually decreases from the first end portion 262 toward the second end portion 264 . In this embodiment, the outer diameter between the first end portion 262 and the second end portion 264 is proportionally tapered, however, the first end portion and the second end portion are not limited to the same proportional tapering, It can also be non-proportionally tapered, but the outer diameter of the first end portion of the present invention must be larger than the outer diameter of the second end portion.

The moving parts 30 in this embodiment are plural, and the moving parts 30 are disposed between the sleeve 10 and the core part 20 . Each of the moving parts 30 is in the shape of a capsule, and a part of it is located in a through hole 124 , and a part is located in the sleeve 10 . The moving parts 30 are limited by the walls of the through holes 124, so as not to break away from the first cylinder 12 of the sleeve 10; The wall and the core 20 are constrained so as not to disengage inwardly from the first barrel 12 of the sleeve 10 .

The moving parts 30 include a retracted state and an expanded state. Referring to FIGS. In the folded state, the moving parts 30 can abut against the second end portion 264 of the enlarged portion 26 and be almost completely located in the first barrel 12 of the sleeve 10 . 5 and 6, when the first end portion 262 of the enlarged portion 26 of the core member 20 corresponds to the through holes 124, the moving parts 30 will be in the expanded state, and the moving parts 30 can abut against Walls of the through holes 124 and the first end 262 of the enlarged portion 26 partially protrude from the first cylinder 12 of the sleeve 10 . At the same time, the enlarged portion 26 of the core 20 can abut against the shoulder 122 of the sleeve 10 , so as to position the core 20 and ensure that the first end 262 of the enlarged portion 26 corresponds to the through holes 124 .

More specifically, the diameter of each of the through holes 124 gradually expands from the outer peripheral surface of the sleeve 10 toward the inner peripheral surface of the sleeve 10, and at least part of the outer contour shape of each of the moving parts 30 corresponds to the shape of each of the through holes. The shape of the hole wall of the hole 124 is such that when the second end portion 264 of the enlarged portion 26 of the core member 20 corresponds to the through holes 124, each of the moving parts 30 can smoothly move along the sides of each of the through holes 124. The hole wall slides towards the core 20 and abuts against the second end 264 of the enlarged portion 26 , thereby being located approximately completely within the first barrel 12 of the sleeve 10 . In addition, the number of through-holes and moving parts in the present invention is not limited to a plurality, but can also be one.

When the expandable anchoring device 100 is to be used, the expandable anchoring device 100 with the mobile part 30 in a retracted state is put into the recessed hole 200a of the wall 200, and then, with a distance away from the sleeve 10 The external force F in the direction acts on the connecting portion 22 of the core 20, so that the core 20 moves downward, and the enlarged portion 26 of the core 20 gradually pushes against the moving parts 30, so that the moving parts 30 automatically The collapsed state moves to the expanded state, so that at least a part of the moving parts 30 protrude from the through holes 124 and abut against the hole wall of the concave hole 200a, so as to fix the expandable anchoring device 100 on the wall 200.

In addition, the second barrel 14 in this embodiment is further provided with an elastic sleeve 40, the elastic sleeve 40 is sleeved on the rod portion 24 of the core 20, effectively preventing the interference of foreign objects, so that the core 20 can smoothly relative to the sleeve 10 movement. And the second cylinder 14 in this embodiment includes a first section 14a and a second section 14b, wherein the aforementioned elastic sleeve 40 is located in the first section 14a, and the inner diameter of the first section 14a is larger than that of the second section 14b, and the inner diameter of the second segment 14b is slightly larger than the outer diameter of the rod 24 of the core 20, so that the stability of the core 20 when moving relative to the sleeve 10 can be increased.

Secondly, although the sleeve in this embodiment is composed of the first cylinder and the second cylinder, in practice, the sleeve of the present invention can be a one-piece structure, and the one-piece sleeve has a The enlarged portion of the core feeder is positioned against the shoulder.

In another practice, the sleeve of the present invention is not only a one-piece structure without the shoulder, but the core of the present invention includes a positioning portion. The positioning portion of the core is combined with one end of the enlarged portion that is not connected to the rod, and the outer diameter of the positioning portion is larger than the inner diameter of the sleeve and smaller than the outer diameter of the sleeve, so that when the core rod When the connecting part of the connecting part is subjected to an external force in a direction away from the sleeve, the positioning part can abut against the wall of the sleeve, so that the first end of the enlarged part accurately corresponds to the through holes, and the core can be avoided. part out of the sleeve.

In another practice, the sleeve of the present invention has a one-piece structure and does not have the shoulder, but the sleeve has a first barrel section and a second barrel section (not shown), wherein the first barrel section The hole diameter of the core is larger than the hole diameter of the second barrel section, so that when the connecting portion of the core is subjected to an external force away from the sleeve, the enlarged portion abuts against the junction of the first barrel section and the second barrel section place, so that its first end accurately corresponds to the through holes, and prevents the core from detaching from the sleeve.

In summary, compared with the prior art, the parts of the expandable anchoring device of the present invention are simplified, and the assembly and combination are simpler and faster. In addition, whether it is an integrated or combined sleeve, it can prevent external dust or fine particles from adhering to the core and moving parts inside the sleeve, so that the core of the present invention can move smoothly with respect to the moving parts. Earth axis moves.

The above description is only a preferred feasible embodiment of the present invention, and all equivalent changes made by applying the description of the present invention and the scope of the patent application should be included in the scope of the patent of the present invention.

[this invention] 100: Expandable anchoring device 10: Sleeve 12: The first cylinder 121: ring recess 122: shoulder 124: Through hole 14: The second cylinder 141: ring convex part 14a: first paragraph 14b: Second paragraph 20: core piece 22: Connecting part 24: stem 26: Expansion Department 262: first end 264: second end 30: Moving parts 40: Elastic Kit 200: wall 200a: concave hole F: external force

Fig. 1 is a perspective view of an expandable anchoring device according to a preferred embodiment of the present invention. Fig. 2 is a front view of Fig. 1 . FIG. 3 is a schematic cross-sectional view of the direction 3-3 in FIG. 2 . Fig. 4 is a cross-sectional view taken along line 4-4 in Fig. 2 . FIG. 5 is similar to FIG. 3 , showing that the moving part abuts against the wall of the concave hole. Fig. 6 is similar to Fig. 4, showing that a part of the moving part protrudes from the through hole of the sleeve.

100: Expandable anchoring device 10: Sleeve 12: The first cylinder 14: The second cylinder 20: core piece 22: Connecting part 24: stem 26: Expansion Department 30: Moving parts

Claims (7)

An expandable anchoring device, comprising: a sleeve with at least one through hole; the at least one through hole passes through the inner peripheral surface and the outer peripheral surface of the sleeve; a core member movable along the axial direction of the sleeve pierced in the sleeve, and includes a connecting portion and an enlarged portion, and a rod connecting the connecting portion and the enlarged portion; the connecting portion is located outside the sleeve; the enlarged portion is located in the sleeve and comprising a first end portion and a second end portion opposite to each other, wherein the outer diameter of the first end portion is larger than the outer diameter of the second end portion, and the second end portion is connected to the rod portion; and at least one The moving part is arranged between the sleeve and the core part and partly located in the at least one through hole. The expandable anchoring device as claimed in claim 1, wherein the sleeve has a plurality of at least one through hole and a plurality of at least one moving part; the moving parts correspond to the through holes respectively . The expandable anchoring device according to claim 1, wherein the diameter of the at least one through hole gradually expands from the outer peripheral surface of the sleeve to the inner peripheral surface of the sleeve, and at least part of the outer contour of the at least one moving member The shape corresponds to the shape of the hole wall of the at least one through hole. The expandable anchoring device as described in claim 1, wherein the sleeve has a shoulder, and the shoulder protrudes from the inner peripheral surface of the sleeve; the enlarged portion can abut against the shoulder, and The first end of the enlarged portion corresponds to the at least one through hole. The expandable anchoring device according to claim 4, wherein the sleeve comprises a first cylinder and a second cylinder, wherein one end of the first cylinder has the shoulder, and the second cylinder is connected to In the one having the shoulder in both ends of the first cylinder; the enlarged portion of the core is located in the first cylinder. The expandable anchoring device as described in Claim 5 further includes an elastic sleeve disposed in the second cylinder and sheathed on the rod of the core. The expandable anchoring device as described in claim 6, wherein the second cylinder comprises a first section and a second section, wherein the inner diameter of the first section is larger than the inner diameter of the second section, and the first section The inner diameter of the second section is slightly larger than the outer diameter of the rod of the core; the elastic sleeve is located in the first section.

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