JP6628645B2 - Functional unit insertion / extraction mechanism - Google Patents

Description

  The present invention relates to an insertion / extraction mechanism for inserting / extracting a functional unit in a motor control center panel or the like on which unit devices are mounted.

When an excessive operating force is required when inserting or removing the functional unit of the motor control center panel due to the engagement of the power supply connector and the energizing section of the box, an insertion / extraction handle is used as an auxiliary tool.
A conventional insertion / extraction mechanism as disclosed in Patent Document 1 inserts each pin of an insertion / extraction handle provided with a rotation axis pin and a push pin into a pin insertion hole of a functional unit upper partition plate and a functional unit top plate, respectively. By rotating the insertion / extraction handle about the axis of rotation, the "leverage principle" works, and the push pin transmits the insertion / extraction force to the functional unit top plate according to the direction in which the insertion / extraction handle rotates, and inserts / extracts the functional unit.

JP 2010-239885 ([0005], [0006], FIG. 5, FIG. 7)

In the conventional insertion / extraction mechanism as disclosed in Patent Document 1, the positions of the rotary shaft pin and the push pin insertion hole of the upper partition plate of the functional unit are difficult to see from the front of the panel, and the rotary shaft pin and the push pin are respectively located on the upper part. Since the length of each pin is shortened so as not to interfere with the functional unit and the functional unit upper partition plate, there is a problem that each pin is hard to insert into the hole and is difficult to fix.
In addition, an unintended reaction force is often applied during the insertion / extraction operation, so that the rotating shaft pin or the push-in pin comes out of the insertion hole, and the insertion / extraction operation is interrupted.

  SUMMARY OF THE INVENTION It is an object of the present invention to solve the above two problems and to provide an insertion / extraction mechanism that can easily fix a handle and suppress a displacement of a pin during a rotation operation.

The functional unit insertion / extraction mechanism according to the present invention includes a functional unit housed in a device housing having an open front surface, the functional unit being removably inserted from the opening side, and a lower portion of the functional unit, and the functional unit being attached to the device. An insertion / extraction mechanism arranged so as to be able to be inserted into and removed from the storage housing is stored therein, and a current supply unit of the functional unit and a current supply unit arranged on the device storage housing side for storing the function unit are detachably attached. An insertion / extraction mechanism , wherein the insertion / extraction mechanism unit includes a detachable insertion / extraction handle, an insertion / extraction handle insertion unit for inserting the insertion / extraction handle, a rotary table to which the insertion / extraction handle insertion unit is fixed, and a rotating shaft standing upright at the rear of the rotary table. A pin, a push pin support provided at the insertion handle insertion portion, and a push pin through hole formed on the bottom plate of the functional unit which is provided upright on the push pin support. A push pin is provided for contacting the functional unit with the push / pull pin.The push pin operates by using the rotary shaft pin as a fulcrum, the push / pull handle as a power point, and the push pin as a point of action, and rotating the push / pull handle. The pin comes into contact with the push-pin through hole of the bottom plate, inserts and removes the functional unit , forms a notch at the tip of the insertion / extraction handle, and engages with the notch at the back side of the insertion / extraction handle insertion portion. A projection is formed, and the push-in pin can be stored below the functional unit by rotating the insertion / extraction handle about the axis of the insertion / extraction handle .

  ADVANTAGE OF THE INVENTION According to the insertion / extraction mechanism of the functional unit of this invention, the position of the rotating shaft pin and the push-pin insertion hole of a partition plate does not become difficult to see, and each pin is difficult to insert in a hole and it is difficult to fix. Can be avoided. Further, the rotating shaft pin or the push pin does not fall out of the insertion hole, and the reliable insertion / extraction operation can be performed.

FIG. 3 is a perspective view showing the entire functional unit and the insertion / extraction mechanism according to the first embodiment of the present invention, showing a case where a functional unit is inserted. The behavior of the push pin when a functional unit is inserted is shown. FIG. 3 is a perspective view illustrating the entire functional unit and the insertion / extraction mechanism according to the first embodiment of the present invention, illustrating a case where the functional unit is extracted. The behavior of the push pin when removing the functional unit is shown. FIG. 2 is a perspective view of the insertion / extraction mechanism according to the first embodiment of the present invention, as viewed from the back. FIG. 2 is a perspective view of the insertion / extraction mechanism according to the first embodiment of the present invention as viewed from the front side. FIG. 2 is a schematic configuration diagram illustrating a method of fixing an insertion / extraction handle and an insertion / extraction handle insertion portion according to the first embodiment of the present invention. It is a perspective view which shows the storing method of the push pin of this invention. FIG. 4 is a perspective view showing the release of the pushing pin in Embodiment 1 according to the present invention. FIG. 11 is a top view showing a method for housing a push pin in Embodiment 2 according to the present invention. It is a side view which shows the storage method of the push pin in Embodiment 2 which concerns on this invention. It is a front view which shows the storage method of the push pin in Embodiment 2 which concerns on this invention. It is a top view which shows the storage method of the push pin in Embodiment 3 concerning this invention. It is a side view which shows the storage method of the push pin in Embodiment 3 concerning this invention. FIG. 13 is a front view showing a method of housing a push pin according to Embodiment 3 of the present invention.

Embodiment 1 FIG.
First Embodiment A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view showing a configuration when the functional unit 1 is inserted into the housing 100 having an open front, and FIG. 2 is a top view showing the behavior of the push pin during the operation. FIG. 3 is a perspective view showing a configuration when the functional unit 1 is pulled out of the housing 100, and FIG. 4 is a top view showing the behavior of the push pin during the operation.
An insertion / extraction mechanism 200 is provided below the functional unit 1. The functional unit 1 has a power supply connection terminal 9, and the power supply connection terminal 9 is detachable from a current-carrying unit disposed on the housing 100 side that houses the functional unit. The insertion / extraction mechanism unit 200 is disposed between the functional unit lower partition plate 7 and the mechanical unit lower partition plate 8 provided in the housing 100 in a shelf shape, and the insertion / extraction handle insertion unit 3 for inserting the insertion / extraction handle 2. , A rotating shaft pin 4. The functional unit bottom plate 6 fixed to the bottom of the functional unit 1 is provided with a push-pin through hole 10, and the push pin 5 inserted into the push-pin through hole 10 is used as the insertion handle 2 with the rotary shaft pin 4 as a fulcrum. The functional unit 1 is inserted / removed by being moved by the rotation operation.

That is, as shown in FIGS. 1 and 3, the present invention has a rotating shaft pin 4 as a fulcrum, an insertion / extraction handle 2 as a force point, and a push pin 5 as an action point, and utilizes the "leverage principle". When the handle 2 is rotated, the push pin 5 of the function unit insertion / extraction mechanism comes into contact with the push pin through hole 10 against the functional unit 1 having the functional unit bottom plate 6 having the push pin through hole 10 opened. , And the functional unit 1 is inserted and removed.
When the functional unit 1 is in the withdrawn state, the push pins 5 are in the state shown in FIG. When the function unit 1 is shifted from the extraction state to the insertion state, the insertion / extraction handle 2 is rotated counterclockwise about the rotation axis pin 4 as a fulcrum, and the push pin 5 moves horizontally to the back of the housing 100. The state shown in FIG. When the functional unit 1 is removed from the inserted state, the reverse operation from the state shown in FIG. 4 to the state shown in FIG. 2 is performed.

First, the main structure of the present invention will be described with reference to FIG.
The insertion / extraction handle insertion section 3 is supported by an insertion / extraction handle insertion section support base 12. The movement of the insertion / extraction handle insertion section 3 in the pipe axis direction is restricted by the contact between the projection 17 and the rotating shaft pin 4, the push pin fixing plate 11 and the insertion / extraction handle insertion section support base 12.
The push pin 5 is fixed to the push pin fixing plate 11 by welding, and the push pin fixing plate 11 is fixed to the insertion / extraction handle insertion portion 3 by welding. The insertion handle support 12 is fixed to the turntable 13 by welding.

A through hole for the rotating shaft pin 4 is provided on the depth side of the turntable 13, the mechanism unit top plate 14, and the mechanism unit support stand 15. Through the rotary shaft pin through hole 20 and the rotary shaft pin through hole (not shown) of the mechanism support 15 to move the movable mechanism from the rotary table 13 of the insertion / extraction handle 2 to the push pin 5 (hereinafter referred to as movable mechanism). ) Can realize a rotational movement about the rotation axis pin 4 of the insertion / extraction handle 2 as a rotation center.
The mechanism section top plate 14 is fixed to the mechanism section support base 15 with bolts 21, and the mechanism section support table 15 is fixed to the mechanism section lower partition plate 8 of FIG. 1 with bolts.
A stop pin 16 is welded to the mechanism support 15 and can be engaged with a side edge of the turntable 13 to regulate the rotation angle of the movable mechanism.

FIG. 6 is a perspective view of the insertion / extraction handle 2 and the insertion / extraction handle insertion portion 3 as viewed from the front.
The insertion / extraction handle 2 has a required strength and is a pipe type having an outer diameter suitable for being grasped by a human hand, and the rotational force of the insertion / extraction handle 2 is applied to the inner surface of the insertion / extraction handle insertion portion 3. By adopting a structure receiving the cylindrical surface, the degree of freedom of the insertion / extraction handle 2 in the vertical direction can be suppressed, and the rotational force can be stably transmitted in the left / right direction.
If protrusions or grooves are formed on the outer surface of the insertion / extraction handle 2, it is possible to easily transmit a rotational force when rotating the insertion / extraction handle 2.
In addition, in the description of FIG. 6, the insertion / extraction handle 2 has a pipe shape, but the same operation can be performed with a round bar shape.

Next, the operation of the insertion / extraction mechanism of the present invention will be described with reference to FIGS.
When the energizing section of the functional unit and the energizing section disposed on the functional unit storage side are manually moved to positions immediately before and after connection and disconnection, respectively, the push pin 5 is pushed into the push pin through hole 10 of the functional unit bottom plate 6. When the functional unit 1 is moved to a position where the power connector comes into contact with the energized box body, that is, a position before performing the insertion / removal operation (hereinafter, referred to as a test position), the functional unit 1 It disturbs one exercise.
In order to prevent this, as shown in FIGS. 7 and 8, a notch 18 is provided at the insertion end of the insertion / extraction handle 2, and a projection 17 on the back side of the insertion / extraction handle insertion portion 3 is inserted into this notch 18. 2 has a structure capable of rotating with respect to the pipe axis.
With this structure, the push pin 5 can be housed inside the insertion / extraction mechanism as shown by the arrow F by rotating the insertion / extraction handle 2 in the axial direction (arrow E in FIG. 8). When the functional unit 1 is moved to the position, the push pin 5 can be prevented from being in the way. After the functional unit 1 has been moved to the test position, the push pin 5 is rotated in the direction of arrow H by rotating the insertion / extraction handle 2 in the direction of arrow G as shown in FIG. The push-up pin 5 is lifted up to the position of the through hole 10 and the storage of the push pin 5 is released.
In the example shown in FIG. 7, the notch 18 is formed at the tip of the pipe-shaped insertion / extraction handle 2 and the projection 17 is formed at the back of the insertion / extraction handle insertion section 3. A similar effect can be obtained by forming a notch or a groove on the back side of 3 and providing a projection on the side of the insertion / extraction handle 2.
Further, by making the shape of the insertion / extraction handle and the insertion portion of the insertion / extraction handle into a shape having a polygonal cross section such as a quadrangular prism or a hexagonal prism, the above-described protrusions and notches can be removed.

  After moving the functional unit 1 to the test position, the insertion / extraction handle 2 is rotated counterclockwise with respect to the pipe axis to push the push pin 5 upward from the functional unit bottom plate 6, as shown by the arrow A in FIG. When the handle 2 is rotated counterclockwise (rightward in FIG. 1) with respect to the rotary shaft pin 4, the push pin 5 pushes the functional unit bottom plate 6 in the depth direction as shown by the arrow B, and the functional unit 1 moves to the normal insertion position. After the insertion operation, the insertion handle 2 can be pulled out as it is.

When removing the functional unit 1, the insertion / extraction handle 2 is inserted into the insertion / extraction handle insertion portion 3 as shown in FIG. 3, and the insertion / extraction handle 2 is rotated clockwise with respect to the rotary shaft pin 4 as shown by an arrow C (in FIG. In this case, the push pin 5 pulls out the functional unit bottom plate 6 in the forward direction as shown by the arrow D, and the functional unit 1 moves to the test position.
After the removal of the functional unit 1, the insertion handle 2 is rotated clockwise with respect to the pipe axis, the push pin 5 is stored in the insertion device, and the insertion handle 2 is pulled out.

As described above, in the insertion / extraction mechanism of the present invention, the rotation shaft pin 4 is provided on the turntable 13 to which the insertion / extraction handle insertion section 3 is fixed, and the push pin fixing plate 11 to which the push pin 5 is fixed is attached to the insertion / extraction handle insertion section 3. By fixing, the insertion / extraction operation can be realized even in a pipe shape.
Further, by adopting a structure in which the rotational force of the insertion / extraction handle 2 is received by the cylindrical surface inside the insertion / extraction handle insertion section 3, the degree of freedom in the vertical direction of the insertion / extraction handle 2 can be suppressed, and the rotation of the insertion / extraction handle 2 can be stabilized in the left / right direction. Can transmit power.
Further, the projection 17 on the back side of the insertion / extraction handle insertion portion 3 is inserted into the notch 18 at the tip of the insertion / extraction handle 2 on the insertion side, and the insertion / extraction handle 2 is rotated with respect to the handle shaft (pipe axis). The function unit 1 is housed below the lower partition plate 7 so as not to hinder the insertion / extraction movement of the function unit 1.
Then, all of the insertion / extraction mechanism 200 is fixed only to the mechanism lower partition plate 8 provided in the housing 100 below the insertion / extraction mechanism 200, and the insertion / extraction mechanism 200 completes all functions by itself. are doing. Thereby, each element of the insertion / extraction mechanism 200 can appropriately maintain the mutual positional relationship, and can appropriately exert its function, and can improve the assembling efficiency of the insertion / extraction mechanism 200 and store it in the housing 100. Assembly can be easily performed.

  In the functional unit insertion / extraction mechanism according to the present invention, as shown in the above-described embodiment, the functional unit 1 and the functional unit 1 which are housed in the device housing 100 having an open front surface so as to be able to be inserted and withdrawn from the opening side. And a function unit insertion / extraction mechanism including an insertion / extraction mechanism unit 200 arranged so that the function unit 1 can be inserted into and extracted from the device storage case 100. The function unit insertion / extraction mechanism is provided in the power supply unit of the function unit 1 and the device storage case 100. A functional unit attaching / detaching mechanism configured to be detachable from a current-carrying unit disposed on a device housing case 100 side for accommodating the functional unit 1, wherein the functional unit insertion / extraction mechanism including an insertion / extraction mechanism section 200 has a function The removable handle 2 and the removable handle 2 are disposed between the lower partition 7 of the unit 1 and the lower partition 8 of the functional unit insertion / extraction mechanism. An insertion / extraction handle insertion portion 3 to be inserted, a rotary table 13 to which the insertion / extraction handle insertion portion 3 is fixed, a rotating shaft pin 4 standing upright behind the rotary table 13, and a push pin fixing plate 11 fixed to the insertion / extraction handle insertion portion 3. A push pin 5 is provided on the push pin support, which is provided on the push pin fixing plate 11, and comes into contact with a push pin through hole 10 formed in the bottom plate 6 of the functional unit 1 to insert and remove the functional unit 1. By rotating about the axis of the handle 2 and rotating around the axis, the push pin 5 can be brought into contact with the push pin through hole 10 of the bottom plate 6, or the push pin 5 can be pushed into the push pin through hole 10 of the bottom plate 6. The insertion and removal handle 2 is rotated by operating the rotary shaft pin 4 as a fulcrum, the insertion and removal handle 2 as a force point, and the pushing pin 5 as an operation point. And, the push pin through holes push pins 5 are in contact with the 10 of the bottom plate 6 is configured to insertion of the functional unit 1.

  According to this configuration, the positions of the rotary shaft pin and the push-pin insertion hole of the partition plate do not become difficult to see, and it is also possible to avoid problems that each pin is hard to insert into the hole and is difficult to fix. Further, the rotating shaft pin or the push pin does not fall out of the insertion hole, and the reliable insertion / extraction operation can be performed. Moreover, by rotating the insertion / extraction handle about the axis of the insertion / extraction handle and rotating around the axis, the push pin can be brought into contact with the push pin through hole provided on the bottom plate of the functional unit, or the push pin can be moved to the functional unit. By storing the functional unit below the bottom plate of the functional unit so as not to come into contact with the through hole of the push pin provided on the bottom plate, the push pin can be reliably engaged with and disengaged from the through hole of the push pin. In addition, since the push pins are housed downward, manual movement of the functional unit can be performed smoothly without hindrance.

Embodiment 2 FIG.
Second Embodiment A second embodiment of the present invention will be described with reference to FIGS. FIG. 10 is a top view showing a method for storing a push pin according to the second embodiment. FIG. 11 is a side view showing a method of storing the push pins. 12 is a front view showing a method of storing the push pin. Configurations and operations and effects other than the specific configuration and operations and effects described in the second embodiment are the same as those in the first embodiment.
The second embodiment shows a modification of the means for storing and releasing the pushing pin.

In FIGS. 10 to 12, a rectangular tubular insertion / extraction handle 22 (corresponding to the insertion / extraction handle 2 of the first embodiment), which is disposed so as to be movable in the extending direction, is moved forward in the extending direction. The part is inserted into the insertion / extraction handle insertion section 24 (corresponding to the insertion / extraction handle insertion section 3 of the first embodiment). A driving slope 22 a is provided at the tip of the insertion handle 22.
The push pin 25 (corresponding to the push pin 5 of the first embodiment) is provided on a push pin support (corresponding to the push pin fixing plate 11 of the first embodiment) including the lever 26. The lever 26 is provided in the insertion / extraction handle insertion portion 24 so as to be vertically movable, and has a driven slope 26a at one end.
In the state shown in FIG. 12A, when the insertion / extraction handle 22 is moved in the direction I, which is the direction in which the handle extends, the drive slope 22a provided at the distal end is driven by the lever 26 provided with the push pin 25. The lever 26 is moved upward against the weight by engaging with the slope 26a, and the state shown in FIG. 12 (b) is changed to the state shown in FIG. 12 (c). The bottom plate 6 is brought into contact with the pin hole 10 to prevent the bottom plate 6 from moving (see FIG. 3).
When pulling out the insertion / extraction handle 22 from the insertion / extraction handle insertion portion 24 and housing the push pin 25, the insertion / extraction handle 22 is moved in the direction opposite to the direction I from the state of FIG. After the state, the state shown in FIG. By the movement of the insertion / extraction handle 22 in the direction opposite to the direction I, the engagement between the driving slope portion 22a and the driven slope portion 26a is released, and the pushing pin support comprising the lever 26 is moved by its own weight as shown in FIG. It shifts to the state of.

Embodiment 3 FIG.
Third Embodiment A third embodiment of the present invention will be described with reference to FIGS. FIG. 13 is a top view showing a method of storing a push pin according to the third embodiment. FIG. 14 is a side view showing a method of storing the push pins. FIG. 15 is a front view showing a method of storing the push pins 5. Configurations and operations and effects other than the specific configuration and operations and effects described in the second embodiment are the same as those in the first embodiment.
The third embodiment shows still another modification of the means for storing and canceling the storage of the push pin.

In FIGS. 13 to 15, a rectangular tubular insertion / extraction handle 27 (corresponding to the insertion / extraction handle 2 of the first embodiment), which is disposed so as to be movable in the extending direction, has a distal end that moves in the extending direction. The part is inserted into the insertion / extraction handle insertion section 29 (corresponding to the insertion / extraction handle insertion section 3 of the first embodiment). A driving engagement portion 27 a is provided at the tip of the insertion / extraction handle 27.
The push pin 30 (corresponding to the push pin 5 of the first embodiment) is provided on a push pin support (corresponding to the push pin fixing plate 11 of the first embodiment) including the lever 28. The lever 28 has one end pivotally connected to the insertion / extraction handle insertion portion 29 by a hinge 31, has a lower engaging surface 28 a, and has a push pin 30 at its free end.
In the state shown in FIG. 15A, when the insertion / extraction handle 27 is moved in the J direction, which is the direction in which the handle extends, the driving engagement portion 27a provided at the distal end of the lever 28 of the lever 28 provided with the push pin 25 is provided. Engaging with the driven engagement surface 28a, the lever 28 is pivoted upward around the hinge 31 against its weight, and goes through the state of FIG. 15 (b) to the state of FIG. 15 (c). The push pins 30 are brought into contact with the push pin through holes 10 of the bottom plate 6 to prevent the bottom plate 6 from moving (see FIG. 3).
When pulling out the insertion / extraction handle 27 from the insertion / extraction handle insertion portion 29 and storing the push pin 30, the insertion / extraction handle 27 is moved in the direction opposite to the J direction from the state of FIG. After the state, the state shown in FIG. 15A can be released to release the contact state of the bottom plate 6 with the push-pin through hole 10 to bring it into the housed state. By the movement of the insertion / extraction handle 27 in the direction opposite to the J direction, the engagement between the driving engagement portion 27a and the driven engagement surface 28a is released, and the pushing pin support including the lever 28 is moved by its own weight as shown in FIG. The state shifts to the state of a).

  In the present invention, some or all of the embodiments can be freely combined, and the embodiments can be appropriately modified or omitted within the scope of the invention.

REFERENCE SIGNS LIST 100 Front open housing 200 Insertion / extraction mechanism unit 1 Function unit 2 Insertion / extraction handle 3 Insertion / extraction handle insertion unit 4 Rotating shaft pin 5 Push pin 6 Function unit bottom plate 7 Function unit lower partition plate 8 Mechanical unit lower partition plate 9 Power supply connection terminal 10 Push Pin through hole 11 Push pin fixing plate (Push pin support)
12 Insertion / extraction handle support section 13 Rotation table 14 Mechanical section top plate 15 Mechanism section support table 16 Stop pin 17 Projection 18 Notch 19 Rotary axis pin through hole 20 provided in mechanism section top plate 20 Rotary axis pin provided in rotary table Through-hole 21 Bolt 22 Insertion / extraction handle for slide-type insertion / extraction mechanism 23 Lever for slide-type insertion / extraction mechanism 24 Insertion / extraction handle insertion section 25 for slide-type insertion / extraction mechanism Push-in pin 26 for slide-type insertion / extraction mechanism Lever 27 for slide-type insertion / extraction mechanism Insertion / extraction handle 28 for hinge-type insertion / extraction mechanism Lever 29 for hinge-type insertion / extraction mechanism Insertion / extraction handle insertion portion 30 for hinge-type insertion / extraction mechanism Push-in pin 31 for hinge-type insertion / extraction mechanism Hinge-type insertion / extraction mechanism hinge 32 Arm for hinge-type insertion / extraction mechanism

Claims (7)

A function unit housed in the device housing housing with an open front surface, the function unit being housed so as to be able to be inserted and removed from the opening side, and arranged below the function unit, and arranged so that the function unit can be inserted into and removed from the device housing housing. is insertion mechanism is housed, an insertion and removal mechanism of the functional unit which can be removably mounted to said conductive portion disposed in the device housing casing side of the conducting portion for accommodating the functional unit of the functional units, the insertion and removal mechanism Are provided on a detachable insertion / extraction handle, an insertion / extraction handle insertion portion for inserting the insertion / extraction handle, a rotary table to which the insertion / extraction handle insertion portion is fixed, a rotating shaft pin erected behind the rotary table, and the insertion / extraction handle insertion portion. The push-pin support, the push-pin support, and the push-in pin formed in the bottom plate of the functional unit are brought into contact with the push-pin through hole to insert and remove the functional unit. The insertion pin is operated by using the rotating shaft pin as a fulcrum, the insertion / extraction handle as a power point, and the push pin as an action point, and the insertion / extraction handle is rotated, whereby the push pin is inserted into the push pin through hole of the bottom plate. A) , a notch is formed at the tip of the insertion / extraction handle, and a projection engaging with the notch is formed on the inner side of the insertion / extraction handle insertion portion, and the insertion / extraction handle is A functional unit, wherein the push pin can be housed below the functional unit by rotating the lever about the axis of the insertion / extraction handle . A function unit housed in the device housing housing with an open front surface, the function unit being housed so as to be able to be inserted and removed from the opening side, and arranged below the function unit, and arranged so that the function unit can be inserted into and removed from the device housing housing. An insertion / extraction mechanism of a functional unit, in which an insertion / extraction mechanism portion is housed, and which allows a current-carrying portion of the functional unit to be detachably attached to a current-carrying portion arranged on the device housing housing side that houses the functional unit, Are provided on a detachable insertion / extraction handle, an insertion / extraction handle insertion portion for inserting the insertion / extraction handle, a rotary table to which the insertion / extraction handle insertion portion is fixed, a rotating shaft pin erected behind the rotary table, and the insertion / extraction handle insertion portion. The push-pin support, the push-pin support, and the push-in pin formed in the bottom plate of the functional unit are brought into contact with the push-pin through hole to insert and remove the functional unit. The insertion pin is operated by using the rotating shaft pin as a fulcrum, the insertion / extraction handle as a power point, and the push pin as an action point, and the insertion / extraction handle is rotated, whereby the push pin is inserted into the push pin through hole of the bottom plate. And a notch or an engagement groove is formed on the inner side of the insertion / extraction handle insertion portion, and a projection that engages with the notch or the engagement groove at the tip of the insertion / extraction handle. A function unit insertion / extraction mechanism for forming a functional unit, wherein the push pin is housed below the functional unit by forming a part and rotating the insertion / extraction handle about the axis of the insertion / extraction handle . A function unit housed in the device housing housing with an open front surface, the function unit being housed so as to be able to be inserted and removed from the opening side, and arranged below the function unit, and arranged so that the function unit can be inserted into and removed from the device housing housing. An insertion / extraction mechanism of a functional unit, in which an insertion / extraction mechanism portion is housed, and which allows a current-carrying portion of the functional unit to be detachably attached to a current-carrying portion arranged on the device housing housing side that houses the functional unit, Are provided on a detachable insertion / extraction handle, an insertion / extraction handle insertion portion for inserting the insertion / extraction handle, a rotary table to which the insertion / extraction handle insertion portion is fixed, a rotating shaft pin erected behind the rotary table, and the insertion / extraction handle insertion portion. The push-pin support, the push-pin support, and the push-in pin formed in the bottom plate of the functional unit are brought into contact with the push-pin through hole to insert and remove the functional unit. The insertion pin is operated by using the rotating shaft pin as a fulcrum, the insertion / extraction handle as a power point, and the push pin as an action point, and the insertion / extraction handle is rotated, whereby the push pin is inserted into the push pin through hole of the bottom plate. Abuts the functional unit, and inserts and removes the functional unit, and the push pin is provided on the push pin support having a driven slope provided on the insertion handle insertion portion so as to be vertically movable, and the insertion handle is A driving slope is provided movably in the extending direction thereof, and a driving slope is provided at a tip thereof, and the driving slope is engaged with the driven slope by pushing in and out of the insertion handle in one direction. A pin support is driven so that the push pin comes into contact with the push pin through hole of the bottom plate, and the push pin is received below the functional unit by moving the insertion handle in the other direction. Possible and functional units of the insertion and removal mechanism. A function unit housed in the device housing housing with an open front surface, the function unit being housed so as to be able to be inserted and removed from the opening side, and arranged below the function unit, and arranged so that the function unit can be inserted into and removed from the device housing housing. An insertion / extraction mechanism of a functional unit, in which an insertion / extraction mechanism portion is housed, and which allows a current-carrying portion of the functional unit to be detachably attached to a current-carrying portion arranged on the device housing housing side that houses the functional unit, Are provided on a detachable insertion / extraction handle, an insertion / extraction handle insertion portion for inserting the insertion / extraction handle, a rotary table to which the insertion / extraction handle insertion portion is fixed, a rotating shaft pin erected behind the rotary table, and the insertion / extraction handle insertion portion. The push-pin support, the push-pin support, and the push-in pin formed in the bottom plate of the functional unit are brought into contact with the push-pin through hole to insert and remove the functional unit. The insertion pin is operated by using the rotating shaft pin as a fulcrum, the insertion / extraction handle as a power point, and the push pin as an action point, and the insertion / extraction handle is rotated, whereby the push pin is inserted into the push pin through hole of the bottom plate. A push pin is provided at a free end of the push pin support, one end of which is pivotally connected to the insertion handle insertion portion, and the insertion handle is extended therefrom. A driving engagement portion is provided at a distal end movably in the direction, and the driving engagement portion drives the push pin support by moving the insertion / extraction handle in one direction. push pin is intended to abut and push the pin through holes of the bottom plate, insertion machine of the functional units of the push pin to allow housing from below the functional unit by the movement in the other direction of the insertion handle . The said insertion / extraction handle is comprised from the circular pipe or the round bar, The said insertion / extraction handle insertion part comprised the inner surface from the circular pipe, The Claim 1 characterized by the above-mentioned. Function unit insertion / extraction mechanism. Wherein the pin-shaped projection on the support base of the insertion and removal mechanism is provided, the said rotation shaft pin insertion mechanism Internal claim 1 which is adapted to restrict the rotation angle of the insertion handle insertion portion to pivot about 5 The insertion / extraction mechanism of the functional unit according to any one of the above. All of the insertion / extraction mechanism portions are fixed only to a mechanism portion lower partition plate provided in the device housing under the insertion / extraction mechanism portion, and the insertion / extraction mechanism portion completes all functions by itself. The functional unit insertion / extraction mechanism according to any one of claims 1 to 6, wherein:

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