JP4528463B2 - Circuit unit retaining structure for electronic equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electronic device configured by inserting a circuit unit into a housing case provided with opposing guide rails via the guide rail, and housing and installing the circuit unit at a predetermined position of the housing case. The present invention relates to a circuit unit retaining structure of an electronic device intended for the device.
[0002]
[Prior art]
7 and 8 show a private branch exchange (PBX) which is one of the electronic devices. The private branch exchange A from which the outer case (not shown) is removed includes the housing case B and the housing case. A control unit (circuit unit) C accommodated in B is provided.
[0003]
The housing case B is provided with guide rails Gl and Gu facing each other on the lower frame Bl and the upper frame Bu.
Further, a mother board M is installed in the inner part of the housing case B, and a connector jack J to which a control unit C described later is connected is installed on the mother board M.
[0004]
On the other hand, the control unit C is a so-called plug-in unit, and includes a circuit board E on which various electronic components (not shown) are mounted, and a reinforcing stay L is provided at the front edge of the circuit board E. It is fixed.
Further, the connector plug P connected to the mother board M is provided at the rear edge of the circuit board E, while the control unit C is accommodated in the front edge of the circuit board E. A pull ring R used for pulling out from B is attached.
[0005]
The control unit C is inserted / removed with respect to the housing case B along the direction perpendicular to the mother board M while being guided by the guide rails Gl and Gu described above. In the inserted state, the connector plug P is connected to the connector jack J of the mother board M, so that it is housed and installed at a predetermined position of the housing B.
[0006]
Further, in the above-described conventional private branch exchange (electronic device) A, when an impact is applied during transportation or use, the connector plug P and the connector jack J are disconnected, and the control unit C comes out of the housing case B. The control unit C is fixed to the housing case B by using a set screw S so that it does not occur.
[0007]
That is, the flange Bf is formed at the opening edge of the housing B, and the notch Lu having a lateral U-shape is formed in the reinforcing stay L of the control unit C, and the set screw passed through the notch Lu. The control unit C is fixed to the housing B by screwing S to the flange Bf and fastening the reinforcing stay L to the flange Bf.
[0008]
[Problems to be solved by the invention]
By the way, in the private branch exchange (electronic device) A in which the control unit C is fixed to the housing case B using the set screw S as described above, when the control unit C is taken out from the housing case B during maintenance and inspection, The set screw S must be removed from the flange Bf of the housing case B. After the control unit C is mounted on the housing case B, the housing case B and the control unit C are fastened again by the set screw S. There is a need.
[0009]
That is, in the private branch exchange A described above, with the insertion / extraction of the control unit C to / from the housing case B, an operation of completely removing the set screw S from the housing case B using a tool, and the removed set screw The operation of attaching S to the housing case B again is required, and there is a disadvantage in that the workability is lowered by forcing the operator to perform complicated operations.
[0010]
Here, in the private branch exchange A described above, after loosening the fastening of the set screw S using a tool, the circuit board E in the control unit C is bent, and the notch Lu of the reinforcing stay L is moved laterally. It is also possible to take out the control unit C from the housing B after releasing the engagement between the set screw S and the reinforcing stay L.
[0011]
However, in the above-described method, it is not necessary to completely remove the set screw S, so that the operation is easy. On the other hand, the circuit board E in the control unit C is bent to break the circuit formed on the circuit board. That is, there is a disadvantage that the control unit C is damaged.
[0012]
On the other hand, the private branch exchange A described above can be configured to fasten the control unit C to the housing case B using a known latch pin (not shown) instead of the set screw S described above.
[0013]
According to such a configuration, the housing case B and the control unit C can be unfastened only by pulling out the latch pin, and the housing case B and the control unit C can be fastened only by pushing the latch pin. Workability far superior to the configuration using a set screw as the fastening means can be obtained, and it is not necessary to forcibly bend the circuit board E, so that inadvertent damage to the control unit C can be prevented. it can.
[0014]
On the other hand, the latch pin that replaces the set screw S has a larger diameter than the set screw S due to its structure, and the flange Bf and the reinforcement stay L to which the latch pin is attached are enlarged accordingly. In the state in which the control unit C is accommodated at a predetermined position, the interval between the housing case B and the control unit C must be set large, which causes an inconvenience of inadvertently increasing the size of the private branch exchange A. there were.
[0015]
In view of the above situation, an object of the present invention is to provide an electronic device that can easily carry out the insertion / extraction operation of the circuit unit with respect to the housing without causing an increase in size of the electronic device or damage to the circuit unit. The object is to provide a retaining structure.
[0016]
[Means for Solving the Problems]
A circuit unit retaining structure for an electronic device according to the present invention includes a housing case provided with opposing guide rails, and a circuit unit that is guided by the guide rail and inserted into and removed from the housing case. A circuit unit retaining structure for an electronic device intended for an electronic device in which a circuit unit is accommodated and installed at a predetermined position, and a beam portion protruding in a front opening in the housing case and extending in the lateral direction, and the beam A locking portion having a pressing portion extending downward from the end of the portion , and further, in a state where the circuit unit is housed in a predetermined position of the housing case, the space between the housing case and the circuit unit is occupied. and, and as to expand in the insertion direction of the circuit unit has a lock plate formed with notches to engage the beam portion of the lock portion, the circuit unit, engaged with the locking portion of the lock plate That and a mobile freely installed lock operation member between the lock position and the lock plate unlocking position disengaging from the locking portion.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
[0018]
1 and 2 show an embodiment in which the present invention is applied to a private branch exchange (PBX) which is one of electronic devices. The private branch exchange 1 with an outer case (not shown) removed is shown in FIG. The housing case 10 and a control unit 20 as a circuit unit housed and installed in the housing case 10 are provided.
[0019]
The housing case 10 has a box shape opened forward, and a guide rail 11 and a guide rail 12 are installed on the lower frame 10L and the upper frame 10U, respectively.
[0020]
Further, a motherboard 13 is installed in the interior of the housing case 10, and a connector jack 14 to which a control unit (circuit unit) 20 described later is connected is installed on the motherboard 13.
[0021]
Here, the guide rail 11 and the guide rail 12 are installed in a manner of being opposed to each other and parallel to each other, and are installed along a direction perpendicular to the mother board 13.
[0022]
On the other hand, the control unit 20 as a circuit unit is a so-called plug-in unit, and includes a circuit board 21 on which various electronic components (not shown) are mounted. A reinforcing stay 22 is fixed.
[0023]
The reinforcing stay 22 is a long member having an L-shaped cross section, is fixed to the front edge of the circuit board 21 in a manner extending in the vertical direction, and a lock operation member 30 described in detail later is attached thereto. Yes.
[0024]
In addition, the connector plug 23 connected to the mother board 13 described above is provided at the rear edge of the circuit board 21, while the control unit 20 is accommodated in the front edge of the circuit board 21. A pull ring 24 that is used when being removed from 10 is attached.
[0025]
The control unit 20 is inserted / removed with respect to the housing case 10 along a direction perpendicular to the mother board 13 while being guided by the guide rails 11 and 12 described above. When the connector plug 23 is connected to the connector jack 14 of the mother board 13 in the inserted state, the connector plug 23 is housed and installed at a predetermined position of the housing case 10.
[0026]
Here, as shown in FIGS. 1 to 3, a lock claw 10 </ b> R as a lock portion is formed on the front edge of the side plate 10 </ b> S in the housing 10 by cutting and raising a part of the side plate 10 </ b> S to the front side. Has been.
[0027]
The lock claw 10R extends flush with the front flange 10F of the housing case 10 and protrudes from the front opening of the housing case 10. The beam portion 10Ra extends in the lateral direction, and the beam portion 10Ra And a presser portion 10Rb extending downward from the end portion.
[0028]
On the other hand, as shown in FIG. 4, the lock operating member 30 is attached to the reinforcing stay 22 of the control unit 20 as described above.
[0029]
The lock operating member 30 is a member manufactured by bending a single sheet metal, and includes a front plate 30F developed along the front plate 22F of the reinforcing stay 22, and a side edge of the front plate 30F. And a pair of knobs 30H that expand forward from the upper and lower edges of the front plate 30F.
[0030]
The front plate 30F is formed with a long hole 30Fo extending in the vertical direction. The locking operation is performed by a screw 31 that passes through the long hole 30Fo and is screwed into the screw hole 22Fo of the front plate 22F in the reinforcing stay 22. The member 30 is attached to the reinforcement stay 22 and is supported so as to be movable in the vertical direction between a lock position and an unlock position, which will be described later, following the front plate 22F of the reinforcement stay 22.
[0031]
The lock plate 30R of the lock operation member 30 occupies the gap between the side plate 10S of the housing case 10 and the control unit 20 in a state where the control unit 20 is housed in a predetermined position of the housing case 10, and the control The unit 20 is developed along the insertion / extraction direction, and a notch 30Ra that engages with a lock claw 10R provided in the housing 10 is formed at an upper edge portion thereof.
[0032]
FIG. 5 shows a state in which the control unit 20 housed and installed at a predetermined position of the housing case 10 is locked to the housing case 10 by the lock operation member 30 in the private branch exchange 1 configured as described above.
[0033]
In this state, the lock operating member 30 is in the locked position, that is, the position where the lock plate 30R is engaged with the lock claw 10R, more specifically, the notch 30Ra of the lock plate 30R is brought into contact with the back surface of the beam portion 10Ra of the lock claw 10R. And fixed to the reinforcing stay 22 of the control unit 20 by screws 31.
[0034]
In the state described above, since the lock plate 30R of the lock operation member 30 is engaged with the lock claw 10R, the front and rear movement of the control unit 20 with respect to the housing case 10 is prevented, so that the private branch exchange 1 is being transported. Even when an impact is applied during use, the control unit 20 does not come out of the housing 10.
[0035]
In the state described above, the beam portion 10Ra and the presser portion 10Rb of the lock claw 10R are sandwiched between the notch 30Ra of the lock plate 30R in the lock operation member 30 and the back surface of the front plate 22F in the reinforcement stay 22. The control unit 20 is fixed to the housing 10 without any backlash in the front-rear direction.
[0036]
Further, in a state where the lock plate 30R is engaged with the lock claw 10R, even when an external force is applied to the control unit 20 from the lateral direction, the lock plate 30R comes into contact with the presser portion 10Rb of the lock claw 10R. The deformation of the control unit 20 such that the circuit board 21 is curved can be prevented in advance.
[0037]
On the other hand, when the control unit 20 is taken out of the housing case 10 for maintenance / inspection of the private branch exchange 1 having the above-described configuration, first, the screw 31 is loosened using a tool such as a screwdriver to lock the lock unit (FIG. 5). The lock operating member 30 that is occupied in the position is pushed downward by a manual operation and moved to the unlock position shown in FIG.
[0038]
In this unlocked position, as shown in FIG. 6, the lock plate 30R is disengaged from the lock claw 10R. Specifically, the contact between the notch 30Ra of the lock plate 30R and the beam portion 10Ra in the lock claw 10R is released. Therefore, the control unit 20 is not locked to the housing case 10 at all.
[0039]
That is, the restriction of the forward / backward movement of the control unit 20 relative to the housing case 10 can be released by loosening the screw 31 slightly without removing it from the housing case 10 and moving the lock operation member 30 to the unlock position. .
[0040]
Therefore, by moving the lock operation member 30 to the unlock position and then pulling the pull ring 24, the control unit 20 is easily pulled out of the housing case 10 while being guided by the guide rails 11 and 12.
[0041]
Here, the lock operation member 30 pushed down to the unlock position is held at the unlock position while being locked to the screw 31 and does not return to the lock position. There is no need to fix the member 30 to the reinforcing stay 22, so that the operation when pulling out the control unit 20 from the housing case 10 and inserting the control unit 20 into the housing case 10 as described later is easy. Become.
[0042]
On the other hand, when the control unit 20 that has undergone maintenance / inspection is again housed in the housing 10, the control unit 20 is first placed in the unlocked position (FIG. 6) in the state where the lock operating member 30 is occupied. The unit 20 is inserted into the housing case 10 along the guide rails 11 and 12, and is housed and installed at a predetermined position in the housing case 10.
[0043]
Next, the lock operation member 30 is pushed up and moved to the lock position (FIG. 5), and then the screw 31 is tightened using a tool such as a screwdriver to fix the lock operation member 30 to the reinforcing stay 22 of the control unit 20.
[0044]
That is, by moving the lock operation member 30 to the lock position and tightening the loosened screw 31, the control unit 20 housed and installed at a predetermined position of the housing case 10 is locked so as not to move back and forth. The Rukoto.
[0045]
As described above, according to the private branch exchange 1 having the above-described configuration, the lock operation member 30 is moved between the lock position and the unlock position, thereby fixing the control unit 20 to the storage housing 10 and the storage housing. 10 can be released.
[0046]
That is, in the private branch exchange 1 having the above-described configuration, it is necessary to remove the set screw using a tool and to attach the removed set screw again with the insertion / extraction of the control unit with respect to the housing case. Compared with the conventional technique, the insertion / extraction operation of the control unit 20 with respect to the housing case 10 can be easily performed.
[0047]
Further, according to the private branch exchange 1 having the above-described configuration, the lock operation member 30 is set to the unlock position, so that the lock plate 30R is detached from the lock claw 10R of the housing case 10, so that the control unit 20 is bent at all. The control unit 20 can be taken out of the housing case 10 without any damage, so that the control unit 20 can be prevented from being damaged due to deformation.
[0048]
Further, according to the private branch exchange 1 having the above-described configuration, when operating the lock operating member 30, it is not necessary to remove the screw 31 supporting the lock operating member 30 from the reinforcing stay 22 of the control unit 20. The screw 31 is not lost during the work.
[0049]
Further, in the private branch exchange 1 having the above-described configuration, the lock plate 30R of the lock operation member 30 that engages with the lock claw 10R of the housing case 10 occupies the gap between the housing case 10 and the control unit 20, And, since it is a plate-like member that expands in the insertion / extraction direction of the control unit 20, compared to the conventional technique in which the control unit is fastened to the housing case using a latch pin, the control unit 20 is housed in the housing case 10, The interval between the housing case 10 and the control unit 20 can be set as small as possible, so that an unintentional enlargement of the private branch exchange 1 can be prevented beforehand.
[0051]
Further, in the above-described embodiment, the private branch exchange in which the control unit as the circuit unit is accommodated and installed in the housing case is exemplified. However, as the circuit unit accommodated and installed in the housing case, for example, a power supply unit or the like control unit Of course, various circuit units other than the above may be used.
[0052]
Further, in the above-described embodiments, the example in which the present invention is applied to the private branch exchange is shown. However, the present invention is effectively applied to various electronic devices in which the plug-in unit is accommodated in the accommodating housing. Needless to say you get.
[0053]
【The invention's effect】
As described above in detail, the circuit unit retaining structure for an electronic device according to the present invention includes a housing case having opposing guide rails, and a circuit unit that is guided by the guide rails and inserted into and removed from the housing case. A circuit unit retaining structure for an electronic device intended for an electronic device comprising a circuit unit accommodated and installed at a predetermined position of the housing case , protruding in a front opening in the housing case and laterally extending A housing portion and a circuit in a state in which the circuit unit is housed at a predetermined position of the housing housing. and Uranaii in the gap between the unit and thereby expand the insertion direction of the circuit unit has a lock plate formed with notches to engage the beam portion of the lock portion, the circuit unit, the lock plays And comprising a lock operation member installed movably between an unlocked position disengaging the locked position and the lock plate into engagement with the locking portion from the locking portion.
[0054]
According to the above configuration, by moving the lock operation member between the lock position and the unlock position, the circuit unit can be fixed to and released from the storage housing. Compared with the prior art that required a work to remove a set screw using a tool and a work to reattach the removed set screw with the insertion / extraction of the circuit unit, the insertion / The extraction work can be easily performed.
[0055]
Further, according to the above configuration, since the lock plate is detached from the lock portion of the housing case by setting the lock operation member to the unlock position, the circuit unit can be taken out from the housing case without bending. Therefore, it is possible to prevent damage to the circuit unit due to deformation.
[0056]
Further, according to the above configuration, the lock plate of the lock operation member that engages with the lock portion of the housing case occupies the gap between the housing case and the circuit unit, and expands in the insertion / extraction direction of the circuit unit. Since it is a plate-like member, the distance between the housing case and the circuit unit in the state in which the circuit unit is housed in the housing case is as much as possible compared to the conventional technique in which the circuit unit is fastened to the housing case using the latch pin. Therefore, it is possible to prevent the electronic device from being inadvertently enlarged.
[0057]
Therefore, according to the circuit unit retaining structure for an electronic device according to the present invention, the insertion / extraction operation of the circuit unit with respect to the housing case can be easily performed without causing an increase in the size of the electronic device or damage to the circuit unit. Is possible.
[Brief description of the drawings]
FIG. 1 is an external perspective view showing an embodiment of an electronic apparatus adopting a circuit unit retaining structure according to the present invention.
2 is a front view and a cross-sectional side view of a main part of the electronic apparatus shown in FIG. 1;
3 is an external perspective view of a main part showing a housing for the electronic device shown in FIG. 1. FIG.
4 is an external perspective view of a main part showing a circuit unit of the electronic device shown in FIG. 1. FIG.
FIGS. 5A and 5B are a main part front view and a main part side view showing a state in which the lock operation member in the electronic apparatus shown in FIG.
6 is a main part front view and a main part side view showing a state in which the lock operation member in the electronic apparatus shown in FIG. 1 is in the unlock position. FIG.
FIG. 7 is an external perspective view showing a conventional electronic device.
FIGS. 8A and 8B are a main part front view and a main part cross-sectional side view showing a conventional electronic device. FIGS.
[Explanation of symbols]
1 ... Private branch exchange (electronic equipment),
10: Housing case,
20: Control unit (circuit unit),
30 ... Lock operation member,
30R ... Lock plate,
10R: Lock claw (lock part).

Claims (1)

A housing case provided with opposing guide rails; and a circuit unit that is guided by the guide rail and is inserted into and removed from the housing case, and the circuit unit is housed and installed at a predetermined position of the housing case. An electronic device circuit unit retaining structure intended for an electronic device comprising:
A lock portion that protrudes from a front opening in the housing and has a beam portion that extends in the lateral direction and a pressing portion that extends downward from an end portion of the beam portion ;
In the state which accommodates the circuit unit at a predetermined position of the receiving housing, and Uranaii in a gap between the circuit unit and the housing casing, and thereby expand the insertion direction of the circuit unit, wherein the locking portion A lock plate having a notch that engages with the beam portion, and a lock position for engaging the lock plate with the lock portion with respect to the circuit unit, and an unlock for releasing the lock plate from the lock portion. A lock operating member installed so as to be movable between positions;
A circuit unit retaining structure for electronic equipment, comprising:

Images