JPH04109869U - Hole anchor removal tool - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose of the present invention is to provide a hole anchor extraction tool that allows hole anchors to be easily removed. [Structure] The first idea consists of an anchor sleeve 3, and an anchor sleeve 3 that is fitted onto the distal end side of the anchor sleeve 3.
A hole anchor extraction tool consisting of a tapered socket 4 for expanding the tip end side in the radial direction to bring the anchor sleeve 3 into close contact with the inner surface of the sleeve insertion hole 2. A tapered threaded portion 10 formed at the tip of the main body 9 and capable of biting into the inner surface of the rear end of the anchor sleeve 3 is screwed into an internal thread 12 formed on the inner surface of the tool main body 9. A push-in bolt 13 is provided for pressing the socket 4 in the removal direction according to the screw engagement, and a second
The idea is to apply impact force to the socket 4 in the withdrawal direction so that it can be inserted into and removed from the cylindrical hole 15 of the tool body 9 in place of the push-in bolt 13 without forming the internal thread 12 in the tool body 9. A driving rod 16 is provided for this purpose.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea is based on a hole that is integrally installed in an anchor insertion hole formed in the floor or wall. This invention relates to a hole anchor extraction tool for extracting a hole anchor.

0002

[Conventional technology]

Traditionally, equipment such as floors and walls (in the telecommunications field, crossbar switches, H-type switches, etc.) Hall anchors are used to easily and securely fix station equipment. .

0003 As shown in Figure 3, the hole anchor 1 consists of an anchor hole drilled in the fixed part. A thin-walled cylindrical anchor sleeve 3 formed to be able to fit into the insertion hole 2, and this anchor The diameter of the distal end of the anchor sleeve 3 is It is composed of a tapered socket 4 that expands depending on the degree of fitting. The socket 4 is molded with a rib-shaped protrusion 5 along its outer periphery in the axial direction. The inner surface of the socket 4 is inserted into the sleeve from the opposite end side of the sleeve. Attach the socket 4 to the anchor sleeve 3 by screwing together the bolt 6 for fixing the equipment. It is formed with an internal thread 7 for relatively moving it to the enlarged diameter side. anchor The sleeve 3 movably engages the protrusion 5 of the socket 4 on its distal end side. A slit 8 is formed to elastically expand the diameter of the tip end of the anchor sleeve 3. There is. Note that the length of the slit 8 above is sufficient for the socket delivery fee for the bolt 6. The maximum external dimensions of the socket including the protrusion 5 are The dimensions are set to be approximately the same as those of Bu 3. Therefore, the socket 4 is connected to the anchor sleeve 3. After inserting hole anchor 1, which has been inserted into the tip side of the hole anchor, into anchor insertion hole 2, Installation of station equipment is easy by screwing the bolt 6 into the internal thread 7 of the socket 4. completed.

0004

[Problems to be solved by ideas] By the way, in the telecommunications field, the conventional crossbar switch and H-type switch have changed to electronic The conversion to switchboards has been remarkable, and of course the amount of work required for conversion has increased rapidly. , hole anchors used to secure conventional crossbar exchangers, H-type exchangers, etc. (Incidentally, the number of hole anchors being planted is on average per telephone office. (approximately 3,000 pieces per location), there is a strong demand for an extraction tool that is efficient in removing them. There is. Therefore, the applicant used pliers or a screwdriver to remove the hole anchor. I tried making a prototype tool using a cam and using it to examine its workability. , these require skill and are basically inefficient and difficult to extract properly. I couldn't do it.

[0005] The purpose of this invention is to remove the hole anchor so that it can be easily removed. We provide removal tools.

[0006]

[Means to solve the problem]

The first idea was to use an anchor sleeve and this anchor sleeve to achieve the above purpose. The tip of the anchor sleeve is fitted onto the tip of the sleeve, and the tip of the anchor sleeve is expanded in the radial direction. A tapered socket to tightly fit the connector sleeve to the inner surface of the sleeve insertion hole. A hole anchor extraction tool consisting of a cylindrical tool body and a tool book. A taper formed at the tip of the body that can be freely bitten into the inner surface of the rear end of the anchor sleeve. The threaded part and the internal thread formed on the inner surface of the tool body are screwed together. A push-in bolt is provided to push the socket in the direction of removal according to the screw engagement. It is something that you have.

[0007] The second idea consists of an anchor sleeve and an anchor sleeve that is fitted on the tip side of the anchor sleeve. Expand the tip of the anchor sleeve in the radial direction and insert the anchor sleeve into the sleeve. Removal of a hole anchor consisting of a tapered socket to fit tightly against the inner surface of the hole The tool includes a cylindrical tool body and an anchor formed at the tip of the tool body. A tapered threaded part that can be inserted into the inner surface of the rear end of the tool sleeve, and a tapered threaded part that can be inserted into the tool body. A drive that is removably inserted and applies impact force to the socket in the withdrawal direction. It has a rod.

[0008]

[Effect]

A bolt for fixing the equipment that is screwed into the screw hole of the socket is inserted from the planted hole anchor. After removing the hole anchor, use the hole anchor extraction tool according to the first invention to remove the hole anchor. When removing the anchor from the tool body, place the tip of the tool body on the rear end of the anchor sleeve. After fitting the threaded part, the tool body is rotated in the direction of engagement. The tapered threaded part gradually bites into the anchor sleeve, and finally the anchor sleeve The tool body and the tool body are integrated. Next, insert the push-in bolt in the direction that the socket will come out. Rotate and press the socket to ensure firm engagement of the socket with the anchor sleeve. unlock. The feed amount of the push-in bolt is used as a guideline for releasing the socket. . After releasing the socket, pull out the hole anchor using the grip of the tool body. Ru.

[0009] Extracting the hole anchor using the hole anchor extraction tool according to the second invention When installing, remove the hole anchor after removing the bolts for fixing the equipment. Apply a striking force to the driving rod using a hammer, etc., and force the socket in the withdrawal direction. Apply impact impact force. The striking force detaches the anchor sleeve from the socket. This causes a reaction force, which causes the anchor sleeve to be relatively detached from the socket in the detachment direction. Ru. Therefore, just by applying a striking force, the anchor sleeve 3 will come out naturally, and the tool body The anchor sleeve can be easily removed without having to pull it out with great force. become.

0010

【Example】

A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.

[0011] (Example 1) As shown in Figure 1, the hole anchor 1 is inserted into the anchor insertion hole 2 formed on the floor of the station. In order to extract the The tool body 9 is formed by cutting a cylindrical material having a shape into a predetermined length. this tool book The tip of the body 9 is threaded to form a tapered threaded portion 10. Te The diameter of the tip of the hole anchor 10 is set appropriately from the inner diameter dimension of the hole anchor 1. The diameter of the root part of the tapered threaded part 10 is determined to be small, and the diameter of the root part of the tapered threaded part 10 is determined to be small. The inner diameter dimension is determined to be larger than the inner diameter dimension of No. 1. Therefore, there is a T on the rear end side of the tool body 9. Grip the handle 11 attached in the shape of a letter and rotate the tool body 9 in the direction in which the screw advances. Then, the tapered threaded part 10 naturally bites into the inner surface of the hole anchor 1, and the Finally, the tool body 9 is firmly bitten into the hole anchor 1 and integrated. and this Pull out the socket 4 from the hole anchor 1 while the tapered threaded part 10 is stuck. In order to take the tool, an internal thread 12 is formed on the inner surface of the tool body 9, and the internal thread 12 has a A push-in bolt 13 having a thread length longer than that of the tool body 9 is screwed together. So Then, the tip of the push-in bolt 13 has an outer diameter smaller than the inner diameter of the hole anchor 1. and a socket pusher such as a nut 14 having a seat surface that seats on the upper end surface of the socket 4. A pressure member is integrally attached. In other words, insert this push-in bolt 13 into a socket. By rotating the socket 4 in the pressing direction of the hole anchor 1, the socket 4 is moved in the direction in which the hole anchor 1 is removed. The hole anchor was gradually moved to the The lock 1 elastically returns to the same external dimensions as the anchor insertion hole 2. . When the tool body 9 is pulled out in this restored state, the anchor sleeve 3 is inserted into the anchor insertion hole 2. It can be easily and quickly removed.

0012 The tool body 9 was explained as being formed by cutting a cylindrical material, but as a tool It is of course possible to use metal materials with sufficient strength and integrally form them by forging or casting. . In addition, the internal thread 12 is formed locally (for example, only on the tip side) instead of being fully threaded, The effective screw length of the push-in bolt 13 is also expected to be sufficient for pushing the socket 4. It does not matter if you set it to the same size. Furthermore, the socket 4 is tightened by the push-in bolt 13. The amount of advance of the push-in bolt 13 is a rough guide for detachment. A flat surface is formed along the axial direction on the rear side of 3, and a scale is engraved on that surface. Of course, it is also possible to actively form a guide by applying color.

[0013] (Example 2) In this embodiment, the anchor sleeve 3 can be removed without using the push-in bolt 13. This allows for easy removal. Specifically, as shown in Figure 2, the tool book Without forming the internal thread 12 in the cylindrical hole 15 of the body 9, the push-in bolt 1 is inserted into this cylindrical hole 15. 3, a driving rod 16 of an appropriate length is provided so as to be freely inserted. In other words, the tip of the driving rod 16 is pressed with a socket such as the nut 14 mentioned above. A hammer or the like is used to apply a striking force to the rear end of the driving rod 16. By doing so, the anchor sleeve 3 is relatively detached from the socket 4. It consists of As the driving rod 16, a commercially available bolt can be used. Therefore, this method is applicable to the hole anchor extraction tool disclosed in Example 1. The hole anchor extraction tool disclosed in the second embodiment is inexpensive.

[0014] To remove hole anchor 1, use a hammer, etc. after removing the bolts for fixing the equipment. is used to apply impact force to the driving rod 16, and to apply impact force to the socket 4 in the direction of detachment. Gives striking power. This striking force causes the anchor sleeve 3 to detach from the socket 4. Therefore, the anchor sleeve 3 is relatively moved in the detachment direction from the socket 4. break away. Therefore, just by applying impact force, the anchor sleeve 3 will come out naturally, and the The anchor sleeve 3 can be easily removed without pulling out the tool body 9 with great force. become able to.

[0015]

[Effect of the idea]

As is clear from the above explanation, the present invention produces the following excellent effects. demonstrate.

[0016] (1) Hole anchors can be removed easily and in a short time.

[0017] (2) It is simple in configuration and can be provided at low cost.

[Brief explanation of drawings]

FIG. 1 is a partial sectional view showing a first embodiment of a hole anchor extraction tool according to the present invention.

FIG. 2 is a partial sectional view showing a second embodiment of the hole anchor extraction tool according to the present invention.

FIG. 3 is a diagram showing how the hole anchor is attached.

[Explanation of symbols]

1 hole anchor 2 Socket insertion hole 4 socket 9 Tool body 10 Tapered threaded part 12 Internal thread 13 Push-in bolt 16 Driving rod

Claims (2)

[Scope of utility model registration request] Claim 1: An anchor sleeve; and a tapered socket that is fitted onto the distal end of the anchor sleeve and expands the distal end of the anchor sleeve in the radial direction to bring the anchor sleeve into close contact with the inner surface of the sleeve insertion hole. A hole anchor extraction tool consisting of a cylindrical tool body,
A tapered threaded portion formed at the tip of the tool body and capable of being engaged with the inner surface of the rear end of the anchor sleeve, an internal thread formed on the inner surface of the tool main body, and a screw thread provided to be threadedly engaged with the internal thread. A hole anchor extraction tool characterized by comprising a push-in bolt for pressing the socket in the removal direction depending on the situation. 2. An anchor sleeve, and a tapered socket that is fitted to the distal end of the anchor sleeve and expands the distal end of the anchor sleeve in the radial direction to bring the anchor sleeve into close contact with the inner surface of the sleeve insertion hole. A hole anchor extraction tool consisting of a cylindrical tool body,
A tapered threaded part is formed at the tip of the tool body and can be freely engaged with the inner surface of the rear end of the anchor sleeve, and the tapered threaded part is inserted into the tool body so as to be freely inserted and removed, and applies a striking force to the socket in the detachment direction. A hole anchor extraction tool characterized by being equipped with a driving rod for removing the hole anchor.