JP2002353665A - Circuit unit retaining structure of electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic apparatus circuit unit retaining structure which enables a circuit unit to be easily inserted into or drawn out from a housing case without increasing an electronic apparatus in scale or causing damage to the circuit unit. SOLUTION: A private branch exchange (electronic apparatus) 1 is equipped with a locking pawl (locking part) 10R fixed to a housing case 10, and a lock control member 30 which is provided with a locking plate 30R. The locking plate 30R is located in a gap between the housing case 10 and a control unit (circuit unit) 20 housed in the housing case at the prescribed position, and unfolded in the direction in which the control unit 20 is inserted or drawn out. The lock control member 30 is installed in a freely movable manner between a locking position at which the locking plate 30R is engaged with the locking pawl 10R and an unlocking position at which the locking plate 30R is disengaged from the locking pawl 10R.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a housing unit having guide rails opposed to each other, and a circuit unit inserted into the housing via the guide rails, and the circuit unit is housed in a predetermined position of the housing housing. The present invention relates to a circuit unit retaining structure of an electronic device for an electronic device to be installed and configured.

[0002]

2. Description of the Related Art FIGS. 7 and 8 show a private branch exchange (PBX), which is one of electronic equipment, and an exterior case.
The private branch exchange A (not shown) is housed in a housing B
And a control unit (circuit unit) C housed in the housing B.

[0003] The housing B has a lower frame Bl and an upper frame Bu which are provided with opposing guide rails Gl,
Gu is provided. Further, a motherboard M is installed in the interior of the housing B, and a connector jack J to which a control unit C described later is connected is installed on the motherboard M.

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 reinforcement on the front edge of the circuit board E. A stay L is fixedly provided. A connector plug P connected to the motherboard M is provided at a rear edge of the circuit board E, while a control unit C is provided at a front edge of the circuit board E to accommodate the housing. A pull ring R used for pulling out from B is attached.

The control unit C is inserted into / removed from the housing B along a direction perpendicular to the motherboard M while being guided by the guide rails Gl and Gu. When the connector plug P is connected to the connector jack J of the motherboard M in a state of being inserted into the housing B, the housing plug B is housed at a predetermined position.

In the above-described conventional private branch exchange (electronic equipment) A, when an impact is applied during transportation or use, the connection between the connector plug P and the connector jack J is disconnected, and the control unit C is housed in the housing. The control unit C is fixed to the housing B by using a set screw S so as not to fall out of B.

That is, a flange Bf is formed at the opening edge of the housing B, and a notch Lu having a horizontal U-shape is formed at the reinforcing stay L of the control unit C.
The set screw S penetrated through the notch Lu is connected to the flange Bf
The control unit C is fixed to the housing B by screwing the reinforcing stay L to the flange Bf.

[0008]

By the way, in the private branch exchange (electronic device) A in which the control unit C is fixed to the housing B by using the set screw S as described above, the housing When taking out the control unit C from B,
The set screw S must be removed from the flange Bf of the housing B, and after the control unit C is mounted on the housing B, the housing B and the control unit C are fastened again by the set screw S. There is a need.

That is, in the private branch exchange A described above, when the control unit C is inserted into or removed from the housing B, the set screw S is completely removed from the housing B using a tool, The operation of attaching the set screw S to the housing B again is required, and there is an inconvenience that the operability is reduced by forcing the operator to perform a complicated operation.

Here, in the private branch exchange A described above, after the fastening of the set screw S is loosened using a tool, the circuit board E in the control unit C is bent, and the reinforcing stay L
By laterally moving the notch Lu, the set screw S
Control unit C after disengagement of the
Can be taken out of the housing B.

However, according to the above-mentioned method, since it is not necessary to completely remove the setscrew S, the work is easy. On the other hand, the circuit board E in the control unit C is formed by bending the circuit board E. There has been an inconvenience that the circuit is damaged, that is, the control unit C is damaged.

On the other hand, in the private branch exchange A described above,
Instead of the set screw S described above, it is also possible to use a well-known latch pin (not shown) to fasten the control unit C to the housing B.

According to such a configuration, the connection between the housing B and the control unit C can be released only by pulling out the latch pin, and the housing B and the control unit C can be connected only by pushing the latch pin. This makes it possible to obtain much better workability than a configuration using a set screw as a fastening means, and it is not necessary to bend the circuit board E forcefully, thereby preventing the control unit C from being inadvertently damaged. can do.

On the other hand, the latch pin replacing the set screw S is
Due to its structure, the diameter is larger than that of the set screw S, and the flange Bf and the reinforcing stay L to which the latch pin is attached are also enlarged accordingly, so that the control unit C is housed in a predetermined position of the housing B. In this case, the distance between the housing B and the control unit C must be set to be large, which causes an inadvertent increase in the size of the private branch exchange A.

[0015] An object of the present invention is to make it possible to easily insert / remove a circuit unit into / from a housing without enlarging an electronic device or damaging a circuit unit. An object of the present invention is to provide a retaining structure for an electronic device.

[0016]

According to the present invention, there is provided an electronic device retaining structure including a housing having guide rails facing each other, a circuit unit guided by the guide rails and inserted into and removed from the housing. A circuit unit retaining structure for an electronic device, which is intended for an electronic device having a circuit unit housed and installed at a predetermined position of a housing case, and is fixedly installed on one of the housing case and the circuit unit. And a lock plate that occupies the gap between the housing case and the circuit unit in a state where the circuit unit is housed at a predetermined position of the housing case and expands in the insertion / removal direction of the circuit unit. And between the lock position for engaging the lock plate with the lock portion and the unlock position for releasing the lock plate from the lock portion on the other of the housing housing and the circuit unit. It is provided with a movably installed locking operation member.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 and FIG. 2 show an embodiment in which the present invention is applied to a private branch exchange (PBX), which is one of the electronic devices, and a private branch exchange with an outer case (not shown) removed. 1 includes a housing 10 and a control unit 20 as a circuit unit housed in the housing 10.

The housing 10 has a box shape opened forward, and has a lower frame 10L and an upper frame 10U on which guide rails 11 and 12 are provided, respectively.

A motherboard 13 is provided at the back of the housing 10.
Is provided with a connector jack 14 to which a control unit (circuit unit) 20 described later is connected.

Here, the guide rails 11 and the guide rails 12 are installed so as to face each other and are parallel to each other.
It is installed along the direction perpendicular to.

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 reinforcement stay 2 is provided on the front edge of the circuit board 21.
2 is fixed.

The reinforcing stay 22 is an elongated member having an L-shaped cross section, and is fixed to the front edge of the circuit board 21 so as to extend in the up-down direction. Installed.

A connector plug 23 connected to the motherboard 13 is provided at a rear edge of the circuit board 21, while a control unit 20 is provided at a front edge of the circuit board 21. A pull ring 24 used when removing the housing from the housing 10 is attached.

The control unit 20 guides the motherboard 1 while being guided by the guide rails 11 and 12 described above.
The connector plug 23 is inserted / removed into / from the housing 10 along a direction perpendicular to the housing 3 and the connector plug 23 is
By connecting to the connector jack 14 of the
0 will be accommodated and installed.

As shown in FIGS. 1 to 3, the front edge of the side plate 10S in the housing 10 is attached to the side plate 10S.
Is cut and raised toward the front side to form a lock claw 10R as a lock portion.

This lock claw 10R is
Of the housing housing 1
0, and has a beam portion 10Ra extending in the lateral direction and a pressing portion 10Rb extending downward from the end of the beam portion 10Ra.

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.

The lock operation member 30 is a member manufactured by bending a single sheet metal, and includes a front plate 30F that extends along the front plate 22F of the reinforcing stay 22, and a front plate 30F. And a pair of knobs 30H extending forward from upper and lower edges of the front plate 30F.

The front plate 30F is formed with a long hole 30Fo extending vertically.
The lock operation member 30 is attached to the reinforcement stay 22 by a screw 31 that penetrates through the screw and is screwed into the screw hole 22Fo of the front plate 22F of the reinforcement stay 22. It is supported movably in the vertical direction between the position and the unlock position.

The lock plate 30R of the lock operation member 30 is provided at a predetermined position of the housing 10 by the control unit 20.
In the state where the control unit 20 is accommodated, the control unit 20 occupies the gap between the side plate 10S and the control unit 20 and expands along the direction in which the control unit 20 is inserted and withdrawn. A notch 30Ra that engages with a lock claw 10R provided on the body 10 is formed.

FIG. 5 shows the private branch exchange 1 having the above-described structure, in which the control unit 20 housed at a predetermined position of the housing 10 is moved by the lock operation member 30 to the housing 1.
The state locked to 0 is shown.

In this state, the lock operation member 3
Reference numeral 0 denotes a lock position, that is, the lock plate 30R is engaged with the lock claw 10R.
Notch 30Ra of lock plate 30R on the back of Ra
Are fixed to the reinforcing stay 22 of the control unit 20 by screws 31.

In the state described above, since the lock plate 30R of the lock operation member 30 is engaged with the lock claw 10R, the control unit 20 with respect to the housing 10 is locked.
Is prevented, the control unit 20 does not fall out of the housing 10 even when an impact is applied during transportation or use of the private branch exchange 1.

In the state described above, the lock claw 10R
The notch 30Ra of the lock plate 30R of the lock operation member 30 is
The control unit 20 is fixed to the housing 10 without rattling in the front-rear direction.

The lock plate 30R is provided with the lock claw 1
In the state where the lock plate 3 is engaged with the lock plate 3, even when an external force acts on the control unit 20 from the lateral direction,
By the contact of 0R with the pressing portion 10Rb of the lock claw 10R, it is possible to prevent the control unit 20 from being deformed such that the circuit board 21 is curved.

On the other hand, when taking out the control unit 20 from the housing 10 in order to perform 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, and then the lock position ( The lock operation member 30 occupied in FIG. 5) is manually pushed down and moved to the unlock position shown in FIG.

In this unlocked position, as shown in FIG. 6, the lock plate 30R is detached from the lock claw 10R, more specifically, the notch 30Ra of the lock plate 30R.
Then, since the contact of the lock claw 10R with the beam portion 10Ra is released, the control unit 20 is not locked at all to the housing 10.

That is, the screw 31 is slightly loosened without being removed from the housing 10, and the lock operation member 30 is moved to the unlock position to release the regulation of the control unit 20 from moving back and forth with respect to the housing 10. be able to.

Therefore, after the lock operation member 30 is moved to the unlock position, the pull ring 24 is pulled, so that the control unit 20 allows the guide rails 11, 1 to move.
2 and is easily pulled out of the housing 10.

Here, the lock operating member 30 pushed down to the unlock position is held at the unlock position while being locked by the screw 31 and does not return to the lock position. Lock operation member 30
Does not need to be fixed to the reinforcing stay 22, so that when the control unit 20 is pulled out of the housing 10, and when the control unit 20 is inserted into the housing 10 as described later, the work becomes easy.

On the other hand, the control unit 2 which has been maintained and inspected
When storing 0 in the housing 10 again, first,
In a state where the lock operation member 30 is occupied in the unlock position (FIG. 6), the control unit 20 is inserted into the housing 10 along the guide rails 11 and 12 and is moved to a predetermined position in the housing 10. It will be housed and installed.

Next, the lock operation member 30 is pushed up to move to the lock position (FIG. 5), and then the screw 31 is tightened using a tool such as a screwdriver, so that the lock operation member 30 is attached to the reinforcing stay 22 of the control unit 20. Fix it.

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 10 does not move back and forth. Will be locked.

As described above, the private branch exchange 1 having the above-described configuration is used.
According to this, by moving the lock operation member 30 between the locked position and the unlocked position, the fixing of the control unit 20 to the housing 10 and the release of the fixing of the control unit 20 to the housing 10 are performed. It can be carried out.

That is, in the private branch exchange 1 having the above-described structure, the operation of removing the set screw using a tool and the operation of reattaching the removed set screw with the insertion / removal of the control unit into / from the housing case are performed. As compared with the related art that has been required, the operation of inserting / removing the control unit 20 into / from the housing 10 can be easily performed.

Further, according to the private branch exchange 1 having the above-described configuration, the lock plate 30R is fixed to the lock claw 1 of the housing 10 by setting the lock operation member 30 to the unlock position.
Since the control unit 20 is detached from the OR, the control unit 20 can be taken out of the housing 10 without any bending, so that the control unit 20 can be prevented from being damaged due to deformation.

Further, according to the private branch exchange 1 having the above-described configuration, when the lock operation member 30 is operated, the screw 31 supporting the lock operation member 30 is moved to the control unit 20.
It is not necessary to remove the screw 31 from the reinforcing stay 22, so that the screw 31 is not lost during the operation.

Further, in the private branch exchange 1 having the above-described configuration, the lock plate 30R of the lock operation member 30 which engages with the lock claw 10R of the housing case 10 is provided.
Is a plate-like member that occupies the gap between the control unit 20 and the control unit 20 and expands in the direction in which the control unit 20 is inserted and removed. When the control unit 20 is housed in the body 10, the distance between the housing 10 and the control unit 20 can be set as small as possible, thereby preventing the private branch exchange 1 from being inadvertently enlarged. can do.

In the above-described embodiment, the lock claw (lock portion) is provided on the housing and the lock operation member is provided on the control unit (circuit unit). An operation member may be provided, and a lock claw may be provided on the control unit (circuit unit).

Further, in the above-described embodiment, the private branch exchange in which the control unit as a circuit unit is housed and installed in the housing is illustrated. However, the circuit unit housed in the housing is, for example, a power supply unit or the like. Of course, various circuit units other than the control unit may be used.

Furthermore, in the above-described embodiment, an example in which the present invention is applied to a private branch exchange is shown. However, the present invention can be applied to various electronic devices in which a plug-in unit is housed and installed in an housing. Needless to say, it can be applied to

[0053]

As described in detail above, the electronic apparatus according to the present invention comprises a housing provided with opposed guide rails, and a circuit unit guided by the guide rails and inserted into and removed from the housing. A circuit unit retaining structure for an electronic device, which is provided for an electronic device having a circuit unit housed and installed at a predetermined position of a housing housing, and is fixedly installed on one of the housing housing and the circuit unit. It has a lock portion, and further has a lock plate that occupies a gap between the housing case and the circuit unit in a state where the circuit unit is housed in a predetermined position of the housing housing and expands in the insertion and removal direction of the circuit unit. The other of the housing and the circuit unit is moved between a lock position where the lock plate is engaged with the lock portion and an unlock position where the lock plate is released from the lock portion. It is equipped with the installed lock operation member standing.

According to the above configuration, by moving the lock operation member between the lock position and the unlock position, it is possible to fix and release the fixation of the circuit unit with respect to the housing. As compared with the prior art, which requires the work of removing a set screw using a tool and the work of attaching the removed set screw when inserting / removing the circuit unit to / from the housing, the circuit unit for the housing housing is required. Insertion / removal work can be easily performed.

Further, according to the above configuration, since the lock plate is detached from the lock portion of the housing by setting the lock operation member to the unlock position, the circuit unit is removed from the housing without any bending. Therefore, it is possible to prevent the circuit unit from being damaged due to the deformation.

According to the above construction, the lock plate of the lock operation member, which engages with the lock portion of the housing,
Since it is a plate-shaped member that occupies the gap between the housing case and the circuit unit and expands in the insertion / removal direction of the circuit unit, compared to the conventional technology of fastening the circuit unit to the housing case using latch pins, the housing case When the circuit unit is housed in the body, the space between the housing and the circuit unit can be set as small as possible, thereby making it possible to prevent the electronic device from being inadvertently enlarged.

Therefore, according to the circuit unit retaining structure of the electronic device according to the present invention, the operation of inserting / removing the circuit unit into / from the housing can be easily performed without increasing the size of the electronic device or damaging the circuit unit. It can be implemented.

[Brief description of the drawings]

FIG. 1 is an external perspective view showing an embodiment of an electronic device employing a circuit unit retaining structure according to the present invention.

2A and 2B are a front view and a cross-sectional side view of a main part of the electronic device shown in FIG.

FIG. 3 is an external perspective view of a main part showing a housing of 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 apparatus shown in FIG. 1;

5A and 5B are a front view and a side view of a main part of the electronic device shown in FIG. 1, showing a state where a lock operation member is at a lock position.

FIGS. 6A and 6B are a front view and a side view of a main part showing a state in which a lock operation member in the electronic apparatus shown in FIG. 1 is at an unlock position.

FIG. 7 is an external perspective view showing a conventional electronic device.

FIG. 8 is a front view and a cross-sectional side view of a main part of a conventional electronic device.

[Description of Signs] 1 ... Private branch exchange (electronic device), 10 ... Housing case, 20 ... Control unit (circuit unit), 30 ... Lock operation member, 30R ... Lock plate, 10R ... Lock claw (lock portion).

 ──────────────────────────────────────────────────続 き Continued on front page F-term (reference) 5E348 DE15

Claims (2)

[Claims] 1. A housing having a guide rail opposed to each other, and a circuit unit guided by the guide rail and inserted into and removed from the housing, the circuit being provided at a predetermined position of the housing. A circuit unit retaining structure for an electronic device for an electronic device configured to house and install a unit, wherein a lock unit fixedly installed on one of the housing case and the circuit unit; A lock plate that occupies a gap between the housing case and the circuit unit in a state where the circuit unit is housed at a predetermined position, and that expands in a direction in which the circuit unit is inserted and removed; the housing case and the circuit unit; On the other hand, between a lock position where the lock plate is engaged with the lock portion and an unlock position where the lock plate is disengaged from the lock portion. Circuit unit retaining structure of an electronic device, characterized by comprising by comprising: a movably installed has been locked operating member. 2. The circuit unit retaining structure according to claim 1, wherein said lock operation member is provided on said circuit unit, and said lock claw is provided on said housing.