JPH0243080Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a replacement tool used when removing or attaching a crossbar switch such as an exchanger using a crossbar switch installed in a telephone office etc. from a storage frame. .

[Conventional technology]

As shown in FIG. 6, a large number of crossbar switches are arranged vertically within the storage frame 25 and fixed with screws. The switch S is stored in the frame 25 for repair, inspection or replacement of the switch S.
Removal or installation is performed from within. In this case, in the past, there were no special tools for removal or installation, so after removing the screws mentioned above, the switch S was pulled out from the front of the storage frame 25 while being supported by hand.

[Problem that the invention attempts to solve]

The switch S is relatively heavy, and even if several workers are required to take it out and put it in while supporting it only with their hands, it takes a lot of effort. It was extremely dangerous. The present invention is a tool used in such replacement work, and the switch S can be stored in the storage frame 25 even when the worker is alone.
The object is to obtain a tool that allows safe and easy removal or installation from within.

[Means for solving problems]

The tool of the present invention is generally shown in FIGS. 1 and 2, and the entire tool is formed into a substantially rice-shaped frame. 1 is an upper horizontal support piece, 2 is a middle horizontal support piece, and the front side (right side in Figure 1) ends of these horizontal support pieces 1 and 2 are integrally attached to both the upper and lower ends of the front upper vertical support piece 3. They are connected to each other and are integrally connected and fixed to both upper and lower ends of the upper central vertical support piece 4 at their respective central portions. Reference numeral 5 denotes a lower horizontal support piece 5. The lower end of a front lower vertical support piece 6 is pivotally or detachably connected to the front end of the horizontal support piece 5, and the upper end of the vertical support piece 6 is attached to a vertical support piece 5. 3 by a screw 7 in a detachable manner. Reference numeral 8 denotes a lower central vertical branch, the upper end of which is removably connected to the connecting part between the horizontal branch 2 and the vertical branch 4 by means of a screw 9, and the lower end of which is connected to the central part of the horizontal branch 5. It is pivotably or removably connected to the Reference numeral 10 denotes a rear vertical support piece, and its upper, middle, and lower ends are screwed 1 to the rear side (left side in Figure 1) end of each horizontal support piece 1, 2, and 5, respectively.
1, 12, and 13 to be detachably connected.

Reference numeral 14 denotes a hooking piece, and the tip of the hooking piece 14 has a hooking protrusion 14' formed by bending upward;
The other end is fixed to one end of the bolt 15 (see FIG. 4). The bolt 15 is inserted into an insertion hole 17 of a mounting piece 16 fixed to the lower side of the substantially central portion of the horizontal support piece 1, and is screwed onto a tightening nut 19 having an abutment piece 18. The above insertion hole 17
and the abutting piece 18 has a
Inclined surfaces 20 and 21 each having an angle of 45° are formed (see FIG. 3). Reference numeral 22 denotes a spring mechanism, which is attached to the vertical support piece 4, and its operating portion 22' abuts on the hook piece 14 or the bolt 15 to constantly push them upward.

The present invention has the above-mentioned components symmetrically formed and consists of a pair of these components.

[Effect]

This invention can be used in three ways:
These three methods will be explained below.

As shown above, the present invention uses a pair of tools simultaneously in exactly the same form (symmetrical), and for the sake of simplicity, only one side will be described.

First example: When removing the switch by placing the switch on the tool First, remove the vertical supports 6, 8, 10 and the horizontal support piece 5 from the tool.The outline of this example is shown in Figure 7A. . Attach horizontal support pieces 1 and 2 to the upper and lower surfaces of switch S2 directly below switch S1 to be removed.
Insert it from the front of the S2 and near both left and right ends of the front of the switch S2. This state of insertion is shown in FIG. In the figure, reference numeral 23 denotes a frame attached to the switch S, and bent pieces 2 bent inward are provided at both upper and lower ends of the front surface of the frame 23.
4, 24' are formed. Therefore, when inserting the horizontal piece 1, the hook piece 14 is attached to the spring mechanism 22.
Once lowered against the pushing force of the hooking protrusion 14'
When the protrusion 14' passes over the bent piece 24, if the pressing down on the hooking piece 14 is released, it is pushed upward by the pushing force of the spring mechanism 22, and the hooking protrusion 14' is positioned behind the bent piece 24. When the tightening nut 19 is rotated in this state, the bolt 15 moves forward and the nut 19 moves backward, so that the hook protrusion 14' engages with the bent piece 24. Then, the abutment piece 18 fits into the insertion hole 17, and the bolt 15 and the hook piece 14 become horizontal.
Therefore, the entire tool is securely fixed to switch S2. In this state, the frame 23 of switch S1
By removing the fixing screws and pulling the switch S1 forward, it can be easily removed from the frame 23 while remaining on the horizontal piece 1. To install, simply perform the above steps in reverse.

2nd example: When a tool is attached to the upper switch of the switch and the switch is supported for attachment or detachment. The outline of this example is shown in FIG. 7B. Remove the vertical support piece 10 of the tool, and attach the horizontal support piece 1,
2, insert the horizontal support piece 5 into the lower surface of the switch S4. In this case, horizontal support 1 for switch S3,
The insertion state of the second example is exactly the same as the first example. Then, the vertical support piece 10 is returned to its original position and attached. Next, remove the screw 9, turn the vertical support piece 8 sideways, pull out the switch S4 to the front, and then return the vertical support piece 8 to its original state. Next, remove the screw 7, fold down the vertical support piece 6, and pull the switch S4 further forward to remove it. To install, perform the above steps in reverse.

Third Example: When removing or installing the switch by attaching a tool to the empty space below the switch The outline of this example is shown in FIG. 7C. In this case, turn the whole tool upside down and remove the vertical support pieces 6, 8 and horizontal support piece 5, then insert the tool into the space below the switch S5 to be removed and screw the screws 7,
26 is used to fix the tool to the storage frame 25 (at the rear of the frame 23), and the switch S5 is pulled out onto the horizontal support piece 1 and removed from the storage frame 25. To install, perform the above steps in reverse.

〔effect〕

Since the present invention is constructed and used as described above, the removal of the switch, which conventionally required a great deal of labor, time, and was dangerous, is now possible using a relatively simple device that is extremely simple, reliable, and quick. This method greatly improves workability and safety, and has the versatility to be widely used for the removal and installation of this type of equipment in the future, making it an extremely practical novelty.

[Brief explanation of drawings]

Fig. 1 is a side view showing the replacement tool of the present invention, Fig. 2 is a front view thereof, Fig. 3 is a sectional view of the upper center part of Fig. 1, and Fig. 4 shows the state of connection between the hook piece and the bolt. 5 is an explanatory diagram showing an example of the usage state of the present invention. FIG. 6 shows the storage state of the crossbar switch, A is its front view, B is its side view, and FIG. 7 is the present invention. FIG. 1...Top horizontal support piece, 2...Middle horizontal support piece, 3
...Front top vertical support piece, 4...Top center vertical support piece, 5...Bottom horizontal support piece, 6...Front bottom vertical support piece, 8...Bottom center vertical support piece, 10...Back vertical support piece , 14...Hook piece, 14'...Hatch protrusion, 2
4...Bent piece.

Claims (1)

[Scope of utility model registration request] Upper horizontal support pieces 1 arranged horizontally parallel to each other
and a middle horizontal support piece 2 are provided, and both upper and lower ends of the front upper vertical support piece 3 arranged vertically to one end of these horizontal support pieces 1 and 2 are connected respectively, and the horizontal support pieces 1, A lower horizontal branch 5 is arranged below the middle horizontal branch 2 in parallel with the horizontal branch 2, by connecting the upper and lower ends of the upper central vertical branch 4 arranged vertically at the center of each of the middle horizontal branches 2 and 2. The lower end of a vertically disposed front lower vertical support 6 is pivotally or detachably connected to one end of the horizontal support 5, and the upper end of the vertical support 6 is connected to the front upper vertical support. The lower end of a lower central vertical branch 8 which is detachably connected to the piece 3 and arranged vertically to the center of the lower horizontal branch 5 is pivotally or detachably connected, and the upper end of the vertical branch 8 is is removably connected to the connecting portion between the upper center vertical branch 4 and the middle horizontal branch 2, and further arranged vertically at the other end of each of the horizontal branches 1, 2, and 5. A hooking protrusion 1 that can be hooked onto a bent piece 24 formed on a switch frame 23 of an exchanger using a crossbar switch, etc., which is located below the center of the upper horizontal support piece 1.
This crossbar switch replacement tool is provided with a hook piece 14 having a diameter of 4'.