TWI636196B - Free planting rubber expansion screw - Google Patents

Abstract

The invention relates to a plant-free rubber expansion screw, which mainly comprises a body, a tie rod and a nut. The center of the body is provided with a perforation, and a thread is arranged on the surface of the body and the perforation, and the end of the body is provided with a slot. And the inner wall surface of the perforated arc surface in the slot is a smooth surface, and the bottom of the perforation of the last slot of the body is a push-out surface; the pull rod is arranged in the perforation of the body, and the surface of the rod is provided with a thread. The bottom end of the pull rod is provided with a push-out portion, and the top portion is provided with a convex body, and the maximum diameter of the push-out portion is larger than the perforated aperture of the body; the plurality of nuts are respectively screwed on the threads of the body and the pull rod; It provides a more stable and easy-to-operate, non-grinding rubber expansion screw.

Description

Plant-free rubber expansion screw

The invention provides a plant-free rubber expansion screw, in particular to a plant-free rubber expansion screw which can make the positioning of the body more stable and convenient to operate.

Generally, the common common plant expansion screws are mainly composed of a body 1, a nut N and a pressing element 10 (as shown in FIG. 1 ), which mainly embed the body 1 of the assembled pressing element 10 into the hole. In A, the nut N above the pressing element 10 is rotated by the tool to raise the pushing portion under the pressing element 10, and the pushing body of the body 1 is placed on the inner surface of the drilling hole A to be fixed. Only because the body 1 is a smooth surface, when the external force is greater than the friction between the body 1 and the bore A, the body 1 will be separated from the bore A, which will cause an accident in use, and the thickness of the wall. Insufficient will also cause the body 1 not to be completely placed in the hole A (as shown in Figure 2), causing the body 1 to be unusable; in addition, someone developed a direct injection into the hole A to insert the stop paste B and then insert The stud 11 and the stop-type paste B are solidified, so that the stud 11 can be firmly combined in the borehole A (shown in FIG. 3), and only the type paste B often loses solidification due to temperature change, so that the stud 11 The hole A is fixed, so there is still a defect in its use.

Therefore, the present inventors deeply felt that there is still improvement in the use of the above-mentioned planting expansion screw, and after long-term efforts and experiments, the present invention was finally developed to achieve better practical effects.

The main object of the present invention is to provide a plant-free rubber expansion screw which can be more stably fixed in a borehole.

The main feature of the invention is that: the main body is provided with: a main body, a through hole is arranged in the center of the main body, and a thread is arranged on the surface of the main body and the perforation, and a plurality of slots are arranged between the end portions of the main body, and the inner wall surface of the curved surface of the grooving section is The surface of the perforation at the end of the body is a push-out surface; the tie rod is disposed in the perforation of the body, the surface of the rod is provided with a thread, and a push-out portion is provided at the end of the pull rod, and the top of the pull rod is provided There are convex bodies; a plurality of nuts are respectively arranged on the threads of the body and the tie rod.

Another main feature of the present invention is that: a main body is provided, a through hole is arranged in the center of the main body, and a thread is arranged on the surface of the main body, and a plurality of slots are arranged between the end portions of the main body, and the inner surface of the curved surface of the grooving section is smooth. The bottom surface of the perforation of the end of the body is a push-out surface; the tie rod is disposed in the perforation of the body, the surface of the rod is provided with a thread, and a push-out head is screwed at the end of the pull rod, and the center of the push-out head is The screw hole is arranged to be combined with the pull rod screw; the plurality of nuts are respectively arranged on the thread of the body and the pull rod.

According to still another main feature of the present invention, the main body is provided with a through hole at the center of the body, and a thread is arranged on the surface of the body, and a plurality of slots are formed between the end portions of the body, and the inner wall surface of the curved surface of the slot portion is a smooth surface; the tie rod is disposed in the through hole of the body, the surface of the pull rod is provided with a thread, and a rotating portion is arranged at the top end of the pull rod, and a push head is arranged at the end of the pull rod, and a screw hole and a pull rod are arranged in the center of the push pull head The screw is combined, and the push head is provided with a rough surface on the push surface; the nut is disposed on the thread of the body.

The plant-free rubber expansion screw of the invention has a perforated bottom of the end slot of the body as a push-out surface.

The plant-free rubber expansion screw of the invention has a diameter larger than a diameter of the perforation.

The plant-free rubber expansion screw of the invention can have a hexagonal shape on the rod.

The plant-free rubber expansion screw of the present invention, the convex body on the pull rod can be plum-shaped.

1‧‧‧ Ontology

10‧‧‧ Tightening elements

11‧‧‧ Stud

2‧‧‧ Ontology

20‧‧‧Perforation

21‧‧‧ thread

22‧‧‧ thread

23‧‧‧ slotting

24‧‧‧ curved surface

240‧‧‧Pushing the slope

3‧‧‧ lever

30‧‧‧ thread

31‧‧‧Pushing Department

32‧‧‧Bulge

4‧‧‧ Nuts

5‧‧‧ lever

50‧‧‧ thread

51‧‧‧Pushing head

510‧‧‧ screw hole

52‧‧‧Bulge

6‧‧‧Ontology

60‧‧‧Perforation

61‧‧‧Thread

62‧‧‧ slotting

63‧‧‧Arc face

64‧‧‧Pushing the slope

7‧‧‧ lever

70‧‧‧ thread

71‧‧‧Rotation

72‧‧‧Pushing head

720‧‧‧ screw holes

721‧‧‧ pushed face

7210‧‧‧Rough surface

A‧‧‧Drilling

B‧‧‧stop paste

N‧‧‧ nuts

Figure 1 is a schematic cross-sectional view showing the use of a conventional plant expansion screw.

Figure 2 is a schematic view of the use of conventional planting anchor expansion screws.

Figure 3 is a schematic cross-sectional view showing the use of another conventional planting anchor screw.

Figure 4 is a perspective exploded view of the first embodiment of the present invention.

Fig. 5 is a perspective assembled view of the first embodiment of the present invention. (nuts are not combined)

Fig. 6 is a schematic cross-sectional view (1) of the first embodiment of the present invention.

Fig. 7 is a schematic cross-sectional view showing the first embodiment of the present invention (2).

Figure 8 is a perspective exploded view of a second embodiment of the present invention.

Figure 9 is a schematic cross-sectional view showing the use of the second embodiment of the present invention.

Figure 10 is a perspective exploded view of a third embodiment of the present invention.

Figure 11 is a schematic cross-sectional view showing the use of the third embodiment of the present invention.

Figure 12 is a perspective exploded view of a fourth embodiment of the present invention.

Figure 13 is a perspective assembled view of a fourth embodiment of the present invention.

Figure 14 is a cross-sectional view (1) showing the use of the fourth embodiment of the present invention.

Figure 15 is a cross-sectional view (2) showing the use of the fourth embodiment of the present invention.

Figure 16 is a cross-sectional view (III) showing the use of the fourth embodiment of the present invention.

Referring to FIG. 4 to FIG. 7 , the first embodiment of the present invention mainly comprises: a body 2 , a pull rod 3 and a plurality of nuts 4 , wherein the body 2 is provided with a through hole 20 in the center, and the body 2 is in the through hole 20 . The surface is provided with threads 21 and 22, and the body 2 is provided with a plurality of slits 23 at the end. The length of the slit 23 is at least 5 cm, so that a large unfolding surface can be produced, and the slit 23 and the slit are formed. 23 rooms The arcuate surface 24 is formed, and the inner surface of the curved surface 24 is a smooth surface, and a push-out inclined surface 240 is disposed at the open end of the bottom portion; the pull rod 3 is disposed in the through hole 20 of the body 2, and the surface of the pull rod 3 is provided Thread 30, the push rod 3 is provided with a push-out portion 31 at the end, and the top portion is provided with a convex body 32. The convex body 32 may be hexagonal or plum-shaped, and the diameter of the push-out portion 31 is larger than the diameter of the through-hole 20; The nut 4 is screwed on the threads 22 and 30 of the body 2 and the tie rod 3, respectively.

In use, insert the body 2 of the assembled tie rod 3 into the drill hole A to the appropriate position and stop, so that the bottom of the nut 4 on the body 2 is attached to the plane (as shown in Fig. 6), and then the tool ( Not shown) the convex body 32 above the rotating rod 3 is rotated to raise the pulling rod 3 (as shown in Fig. 7), and when the pushing portion 31 of the pulling rod 3 gradually enters the perforation 20 of the lower portion of the body 2, the curved surface 24 is extended by the pushing portion 31 and is outwardly expanded, so that the screw outside the curved surface 24 is tightly engaged on the inner wall of the borehole A. At this time, the body 2 is completely fixed in the borehole A, and then The nut 4 is screwed into the rod 3, and since the diameter of the curved surface 24 is much larger than the diameter of the bore A, the body 2 is not pulled out.

Referring to FIGS. 8-9, the second embodiment of the present invention mainly comprises: a body 2, a tie rod 5 and a plurality of nuts 4, wherein the body 2 is provided with a through hole 20 in the center, and the body 2 is in the through hole 20. Threads 21 and 22 are provided on the surface, and the body 2 is provided with a plurality of slits 23 at the end, and a circular arc surface 24 is formed between the slit 23 and the slit 23, and the inner surface of the curved surface 24 is a smooth surface, and The bottom open end is provided with a push-out inclined surface 240; the pull rod 5 is disposed in the through hole 20 of the body 2, the surface of the pull rod 5 is provided with a thread 50, and the top end of the pull rod 5 is provided with a convex body 52, the convex body 52 can be For the hexagonal or plum-shaped shape, the push rod 5 is provided with a push-out head 51 at the end of the pull rod 5, and the screw hole 510 is arranged in the center of the push-up head 51 to be screwed with the pull rod 5, and the diameter of the push-up head 51 is larger than The diameter of the perforation 20; the plurality of nuts 4 are respectively screwed on the threads 22, 50 of the body 2 and the tie rod 5.

In use, it is only necessary to apply the convex body 52 above the rod 5 by the tool, so as to reach the rising push head 51 and hold the inner wall of the embedded drill hole A, and the positioning can be achieved.

Referring to FIGS. 10-11, the third embodiment of the present invention mainly comprises: a body 2, a tie rod 3 and a plurality of nuts 4, wherein the body 2 is provided with a through hole 20 in the center, and the body 2 is provided with a thread on the surface. 22, the body 2 is provided with a plurality of slots 23 at the end, and the arcuate surface 24 is formed between the slot 23 and the slot 23, and the inner surface of the arc surface 24 is a smooth surface, and is pushed at the open end of the bottom portion. The inclined surface 240; the tie rod 3 is disposed in the through hole 20 of the body 2, the surface of the pull rod 3 is provided with a thread 30, and the end portion of the pull rod 3 is provided with a push-out portion 31, the diameter of the push-out portion 31 is larger than the perforation The diameter of 20; the number of nuts 4 are screwed on the threads 22, 30 of the body 2 and the tie rod 3, respectively.

The fourth embodiment of the present invention mainly includes a body 6, a tie rod 7 and a nut 4, wherein the body 6 is provided with a through hole 60 in the center thereof, and the surface of the body 6 is provided with a thread 61, and The bottom portion is provided with a plurality of slots 62 and arcuate surfaces 63, and the body 6 is provided with a push-out slope 64 at the bottom of the through hole 60; the pull rod 7 is disposed in the through hole 60 of the body 6, and the surface of the rod 7 is provided with a thread. 70, the top end of the pull rod 7 is provided with a rotating portion 71, and the end of the pull rod 7 is screwed with a pushing head 72. The pushing head 72 is provided with a screw hole 720 at the center and a pushing surface 721 at the front portion. The 721 is provided with a rough surface 7210. The screw hole 720 can be screwed with the pull rod 7. The diameter of the push head 72 is larger than the diameter of the through hole 60 of the body 6. The nut 4 is screwed on the thread 61 of the body 6. .

In use, the body 6 of the assembled tie rod 7 is screwed into the drilled hole A to the appropriate position and then stopped, so that the bottom of the nut 4 is attached to the plane (as shown in Fig. 14), and then the tool (not shown) The rotating portion 71 above the rotating rod 7 is rotated to pull up and down the pushing head 72. Since the pushing surface 721 of the pushing head 72 is provided with a rough surface 7210, the pushing head 72 will be engaged with the body 6 Push Pulling the inclined surface 64 without rotating will only rise (as shown in Fig. 15), so that when the push-up head 72 of the pull rod 7 gradually enters the through hole 60 of the lower portion of the body 6, the push-out inclined surface 64 is pushed by the push head. The top of the 72 is extended outwardly so that the thread outside the curved surface 63 is tightly engaged with the inner wall of the borehole A. At this time, the body 6 is completely fixed in the borehole A, and the pull rod 7 is below the bottom. The push head 72 is pulled up, and the rotating portion 71 of the pull rod 7 does not rise the convex surface, so that the problem that the positioning can be achieved without causing the rotating portion 71 to protrude can be easily accomplished.

As can be seen from the above description, the present invention has the following advantages:

1. The inner and outer surfaces of the body 2 of the present invention are provided with threads 21 and 22, so that the operation thereof is more convenient, and the design of the thread 22 increases the friction surface with the drill hole A, thereby increasing the tensile strength thereof. effect.

2. The slit 23 and the thread 22 which are opened at the end of the body 2 of the present invention can make the engagement of the hole A more firm and compact, and has a tensile effect.

3. The body 2 and the tie rod 3 of the present invention are both made of a metal material, so that no chemical change occurs due to temperature.

4. If the present invention is to be repositioned, it is only necessary to use the tool to reversely rotate the protrusion 32 above the pull rod 3, so that the pull rod 3 is rotated downward, so that the push portion 31 is withdrawn from the gusset 23 and then rotated. The nut 4 on the body 2 can be easily removed by lifting the body 2.

5. The body 2 and the tie rod 3 of the invention have a large expansion volume, so they can be applied to holes of any material such as wood, cement and earth wall, and can be tightly combined and not loose.

6. The plant-free rubber expansion screw of the invention, wherein the outer side of the body 2 is provided with a thread 22, so it can be applied to positioning holes with different depths, and can also achieve the purpose of complete positioning.

7. The plant-free rubber expansion screw of the present invention can be externally supported by the pull-up push-up head 72 by being not limited by the depth of the drill hole A (as shown in FIG. 16). It is more convenient and safe to use when it is completely positioned and not loose.

However, the above is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the equivalent changes or modifications made by the scope of the present invention and the contents of the description of the invention should still be It is within the scope of the patent of the present invention.

Claims (6)

The utility model relates to a non-planting rubber expansion screw, which mainly comprises: a body, a perforation is arranged in the center of the body, and a thread is arranged on the surface of the body and the perforation, and a plurality of slots are arranged between the end sections of the body, and the curved surface of the slot section The inner wall surface has a smooth surface, and the bottom of the perforation at the end of the body is a push-out surface; the tie rod is disposed in the perforation of the body, the surface of the rod is provided with a thread, and a push-out portion is provided at the end of the pull rod, and The top of the tie rod is provided with a convex body; the plurality of nuts are respectively arranged on the threads of the body and the pull rod. The plant-free rubber expansion screw according to claim 1, wherein the diameter of the push-up portion of the pull rod is larger than the diameter of the through hole. The plant-free rubber expansion screw according to claim 1, wherein the protrusion on the rod is hexagonal. The plant-free rubber expansion screw according to claim 1, wherein the convex body on the tie rod is a plum-shaped one. The utility model relates to a non-planting rubber expansion screw, which mainly comprises: a body, a through hole is arranged in the center of the body, and a thread is arranged on the surface of the body, and a plurality of slots are arranged between the end sections of the body, and the inner wall surface of the curved surface of the groove section is Smoothing the surface, and the bottom of the perforation of the last section of the body is a push-out surface; the tie rod is disposed in the perforation of the body, the surface of the rod is provided with a thread, and a push-out head is screwed at the end of the rod, the push-up head The center has a screw hole which can be combined with the pull rod screw; the plurality of nuts are respectively arranged on the thread of the body and the pull rod. The utility model relates to a non-planting rubber expansion screw, which mainly comprises: a body, a through hole is arranged in the center of the body, and a thread is arranged on the surface of the body, and a plurality of slots are arranged between the end sections of the body, and the inner wall surface of the curved surface of the groove section is a smooth surface; the tie rod is disposed in the through hole of the body, the surface of the pull rod is provided with a thread, and a rotating portion is arranged at the top end of the pull rod, and a push head is arranged at the end of the pull rod, and a screw hole and a pull rod are arranged in the center of the push pull head The screw is combined, and the push head is provided with a rough surface on the push surface; the nut is disposed on the thread of the body.