JPH11163561A - Ejector for electronic circuit package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smooth way to insert and pull out a high-density electronic circuit package through use of ejectors for inserting and pulling out the electronic circuit package in or from a shelf without reducing an area for mounting components on a front panel. SOLUTION: Ejectors 30 and 40 are provided respectively on the upper and lower ends of a front panel 24 of a circuit board 21. The ejectors 30 and 40 are respectively comprised of bases 31 and 41 and levers 32 and 42. The base 31 of the ejector 30 is rotatably mounted around a rotating axis 30a in an area between the position in which at least a surface 311 faces the front and the position in which the flat surface 311 is horizontally and upwardly oriented. Also, a concave part 312 is formed on the base 31 for engaging a stopper on the side of a shelf. The lever 32 is mounted on such a base 31 in such a way that it can slide in approximately parallel to the flat surface 311. On the other hand, the structure of the ejector 40 is almost the same as the ejector 30 except that it is vertically symmetrical to the ejector 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ejector of an electronic circuit package for inserting and removing an electronic circuit package from a shelf, and more particularly to an ejector of a plug-in type electronic circuit package.

2. Description of the Related Art Conventionally, in communication devices and electronic computers, a plurality of electronic circuit packages can be plugged into a connector on a backboard of a shelf in consideration of simplicity of maintenance and expansion.

[0003]

2. Description of the Related Art An electronic circuit package which is inserted into and removed from such a shelf is provided with an ejector for reducing a fitting force with a connector.

FIG. 9 is a perspective view showing an external structure of a conventional electronic circuit package having an ejector. In the electronic circuit package 60, the connector 6 is attached to one end of the circuit board 61.
2, 63 are attached. Connectors 62, 63
By inserting the electronic circuit package 60 into a shelf (not shown), the electronic circuit package 60 is fitted with a connector on the backboard of the shelf.

[0005] On the front side of the electronic circuit package 60, a front plate 64 is formed. Various electronic components such as various connectors 64a and LEDs 64b are attached to the front plate 64. Ejectors 65 and 66 are provided at the upper and lower ends of the front plate 64, respectively. The ejectors 65 and 66 include a lever 65 having a predetermined length.
1,661 are formed. These levers 651, 66
1 is attached so as to be rotatable about axes 652 and 662 between a direction substantially parallel to the front plate 64 and a direction perpendicular thereto, as shown in the figure. In addition, the ejectors 65 and 66 have concave portions 653 and 66 fitted with stoppers on the shelf side.
3 are formed.

In such an electronic circuit package 60, first, the levers 651 and 661 of the ejectors 65 and 66 are inserted into the slots of the shelf with the front sides facing forward. Then, when the connectors 62 and 63 come to a position where they are fitted with the connectors on the backboard, the recesses 6 of the ejectors 65 and 66
53 and 663 are fitted with the stoppers of the shelf. Then, when the levers 651 and 661 are tilted toward the front plate 64, the force is applied to the concave portions 653 and 663, and the electronic circuit package 60 can be pushed further. As a result, the connectors 62 and 63 are securely connected to the shelf.

On the other hand, when extracting the electronic circuit package 60 from the shelf, the levers 651 and 661 of the ejectors 65 and 66 are opened toward the user. Then, connector 6
2, 63 can be easily detached from the shelf side, and the electronic circuit package 60 can be pulled out.

As described above, by providing the ejectors 65 and 66, the electronic circuit package 60 can be reliably inserted and removed without using a special tool.
By the way, in recent years, high-density mounting of the electronic circuit package 60 has been advanced, and accordingly, the number of pins of the connectors 62 and 63 has also increased. For this reason, since the fitting force of the connector is increased, the ejectors 65 and 66
Greater power is required. So recently,
As shown in FIG. 10, it is required to lengthen the levers 651 and 661.

[0009]

However, the lever 65
When the lengths of the components 1 and 661 are increased, a region for closing the front plate 4 when the components are closed is increased.

[0010] The present invention has been made in view of such a point, without reducing the component mounting area of the front plate,
It is an object of the present invention to provide an electronic circuit package ejector capable of easily inserting and removing an electronic circuit package mounted at high density.

[0011]

In order to achieve the above object, according to the present invention, as shown in FIG. 1, in the ejectors 30, 40 of the electronic circuit package 20 for inserting and removing the electronic circuit package from the shelf, The electronic circuit package 20 is rotatably attached to an end portion of the front plate 24 of the electronic circuit package 20. When the electronic circuit package 20 turns in a direction to close to the front plate 24 side, the electronic circuit package 20 is inserted in cooperation with the stopper on the shelf side. Give force in the direction,
On the other hand, when rotating in the opening direction with respect to the front plate 24, the electronic circuit package 2 cooperates with the stopper.
Base members 31 and 41 for applying force in the direction in which 0 is pulled out
And lever members (32, 42) slidably attached to the base members (31, 41) so that the length from the rotation axis of the base members (31, 41) can be expanded and contracted. Circuit Package Ejector 3
0,40 is provided.

In the ejectors 30 and 40, when the electronic circuit package 20 is inserted into or removed from the shelf, the lever members 32 and 42 are slid to move the electronic circuit package 20 from the rotation shafts 30a and 40a of the base members 31 and 41. Extend the length of. At the time of insertion, the lever members 32, 42
Is closed to the front plate 24 side, while the lever members 32 and 42 are opened to the near side when extracting. As a result, the moment of the lever members 32 and 42 can be increased, so that a strong force can be applied to the base members 31 and 41 even with a weak force, and the electronic circuit package 20 can be easily mounted against the fitting force of the connectors 22 and 23. Can be inserted and removed.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 2 is a perspective view showing an external configuration of a shelf on which the electronic circuit package of the present embodiment is mounted. A number of slots are provided in the case 11 of the shelf 10, and each slot is provided with an electronic circuit package 20.
Is attached. At the front of the case 11, a mounting piece 1
1a and 11b are provided.
The entire shelf 10 is fixed to a larger storage device or a support column or the like via a and 11b.

Ejectors 30 and 40 are attached to the upper and lower ends of the front side of the electronic circuit package 20, respectively. The ejectors 30 and 40 are each mainly composed of the base 3
1 and 41 and levers 32 and 42. When the electronic circuit package 20 is completely mounted on the shelf 10, the levers 32, 4 of the ejectors 30, 40 are set.
2 is a guide fitting 1 provided on the case 11 respectively.
Screws 2 and 13 are fixed.

Further, plate-like stoppers 14 and 15 are provided above and below the case 11, respectively. These stoppers 14, 15 are connected to the ejectors 30,
40 are fitted with the bases 31 and 41.

Next, a specific configuration of the electronic circuit package 20 will be described. FIG. 1 is a perspective view showing a specific configuration of the electronic circuit package 20. Various electronic circuit components (not shown) are mounted on the circuit board 21 of the electronic circuit package 20. Further, connectors 22 and 23 are attached to an end on the far side of the circuit board 21. The connectors 22 and 23 connect the electronic circuit package 20 to the shelf 1.
When it is inserted into the shelf 10, it is fitted with a connector on the back board of the shelf 10.

On the front side of the circuit board 21, a front plate 24 is formed. Various connectors 24a, LEDs 24b, and the like are attached to the front plate 24. Ejectors 3 are provided at the upper and lower ends of the front plate 24, respectively.
0 and 40 are provided. The ejectors 30 and 40
As described above, each of the bases 31, 41 and the lever 3
2, 42.

The base 31 of the ejector 30 is mounted so as to be rotatable about a rotary shaft 30a at least in a range between a position where the surface 311 faces the front and a position where the flat portion 311 faces horizontally upward. In addition, the base 31 has the structure shown in FIG.
A recess 312 is formed to fit with the stopper 14 indicated by. The lever 32 is attached to the base 31 so as to be slidable in a direction substantially parallel to the plane portion 311.

On the other hand, similarly, the ejector 40 has its base 41 provided with the rotating shaft 4 at least in a range between a position where the plane portion 411 faces the front and a position where the surface 411 faces horizontally downward.
It is attached so as to be rotatable about 0a. The base 41 has a recess 412 that fits with the stopper 15 shown in FIG. The lever 42 is attached to such a base 41 so as to be slidable in a direction substantially parallel to the plane portion 411.

Next, a specific configuration of the ejector will be described. FIG. 3 is a perspective view showing a specific configuration of the ejector when the lever is stored. FIG. 4 is a perspective view showing a specific configuration of the ejector when the lever is pulled out. Here, the configuration of the ejector 40 is shown as an example.
As shown in FIGS. 3 and 4, the ejector 40 includes a base 41 and a lever 42. Base 41
Is made of, for example, a hard plastic mixed with glass fiber or the like. The base 41 has a shaft hole 41.
The shaft hole 41a is attached to the circuit board 21 via the shaft 40a shown in FIG.

The base 41 has a recess 412 to be fitted with the stopper 15. In addition, base 4
1 has a hole 413 substantially parallel to the plane portion 411. The lever 42 is slidably housed in the hole 413.

The lever 42 is formed of a metal such as iron or stainless steel. Further, the lever 42 has an upper portion 42a formed slightly thinner than the lower portion 42b. A notch 4 for screwing is provided at the lower end of the lever 42.
21 is formed as a fixing portion. Also, lever 42
On one surface, small concave portions 422 and 423 (the concave portions 423 are shown in FIG. 4) are formed at predetermined intervals.

FIG. 5 is a sectional view of a part of the base 41 of FIG. The upper portion 413a of the hole 413 in which the lever 42 slides is formed to be narrower than the lower portion 413b. Thus, when the lever 42 is pulled upward, the step portion 424 of the lever 42 is hooked on the upper portion 413a, and the lever 42 is prevented from falling out of the hole 413.

In the hole 413, a projection 413c is formed. The projecting portion 413c can be fitted to the concave portions 422 and 423 of the lever 42. The lever 42 is held in a state of being pulled out as shown in FIGS. 4 and 5 when the concave portion 422 is fitted with the projection 413c, and when the recess 423 is fitted with the projection 413c. As shown in FIG.

Although the structure of the ejector 40 is shown in FIGS. 3 to 5, the ejector 30 has substantially the same structure except that the vertical relationship is reversed. Therefore, description of the ejector 30 is omitted.

Next, the ejector 30,
A method of attaching and detaching the electronic circuit package 20 using the component 40 will be described. First, when inserting the electronic circuit package 20 into the shelf 10, as shown in FIG. 6, the levers 32 and 42 of the ejectors 30 and 40 are pulled out and lengthened, and the slots of the shelf 10 are opened in the front side. Insert When the connectors 22 and 23 are inserted to a position where they come into contact with the connectors on the shelf 10, the ejector 3
The bases 31 and 41 of 0 and 40 abut against the stoppers 14 and 15.

FIGS. 7A and 7B are views showing a state in which the base 41 of the ejector 40 is in contact with the stopper 15. FIG. 7A is a side view showing a state immediately after the contact, and FIG. It is a side view showing a state. First, as shown in FIG. 7A, when the electronic circuit package 20 is pushed into the shelf 10, the surface 412 a of the concave portion 412 of the base 41 comes into contact with the stopper 15. Thereby, the electronic circuit package 2
Since the entry of 0 stops, the operator raises the lever 42 upward as shown in FIG.

Then, the inner surface 412b of the concave portion 412 comes into contact with the inside of the stopper 15, and the electronic circuit package 20 is pushed further inward by the leverage principle. This allows
The connectors 22 and 23 are securely fitted with the connectors of the shelf 10, and the insertion of the electronic circuit package 20 into the slot is completed.

Although FIG. 7 shows only the operation of the ejector 40, the ejector 30 may perform the same operation almost at the same time except that the vertical relationship is reversed. FIG. 8 is a diagram showing a treatment method after the electronic circuit package 20 is inserted into the slot. When the electronic circuit package 20 can be inserted into the slot, for example, the lever 42 of the ejector 40 is stored, and the notch 421 is screwed into the spring-type attachment 51 of the guide fitting 13 provided in advance for each slot.
Stop with 2. The spring-type attachment 51 is formed of metal. For the ejector 30, the lever 32 is similarly screwed to the guide fitting 12. Thus, the levers 32 and 42 are grounded to the shelf 10 side.

On the other hand, when taking out the electronic circuit package 20 from the shelf 10, the levers 32 and 42 of the ejectors 30 and 40 are removed from the guide fittings 12 and 13, respectively, and as shown in FIG. And push it toward you. Thereby, the concave portion 41 of the base 41
2 presses the stopper 15 so that the connector 2
2 and 23 are easily detached from the connectors of the shelf 10.

As described above, in this embodiment, the ejector 3
Since the levers 32 and 42 of the 0 and 40 are extendable and contractible, the electronic circuit package 20 can be easily inserted into and removed from the slot with a small force by increasing the length during the insertion operation.

After the electronic circuit package 20 is completely inserted, the levers 32 and 42 can be stored shortly, so that they do not obstruct the area of the front plate 24. Therefore, the front plate 24
Can be used effectively, and the upper connector 24a and LED 24b
And other components can be fully loaded.

Further, in the present embodiment, the levers 32, 42 are made of metal, and are grounded by screwing them to the guide fittings 12, 13, so that a person can use the levers 32, 4.
Since the static electricity of a person is discharged through the levers 32 and 42 and the guide fittings 12 and 13 when the user touches 2, the influence of static electricity on the circuit components can be prevented, and the components can be prevented from being broken.

Further, by fixing the levers 32 and 42 with screws, the electronic circuit package 2 after the slot is mounted.
0 can be more firmly fixed, resistant to earthquakes and vibration during transportation, and can prevent the circuit board 21 from falling off and circuit components from being damaged. Therefore, it is possible to cope with an increase in the weight of the mounted circuit.

In this embodiment, as means for fixing the levers 32, 42 to the guide fittings 12, 13, the lever 3
A notch 421 and the like are formed on the sides 2 and 42, and the notch 421 is fixed using the screw 52.
The present invention is not limited to this.
For example, a claw portion may be used as a fixing portion instead of the lever 32, 42.
The guide fittings 12 and 13 may be formed with fitting portions that are detachable from the claw portions.

[0036]

As described above, according to the present invention, since the lever member of the ejector is made extendable and contractable, the length of the lever member can be reduced when inserting or pulling out the electronic circuit package, thereby reducing the force required by the electronic circuit package. Can be easily inserted and removed from the slot.

Further, after the insertion of the electronic circuit package is completed, the lever member can be stored short, so that it does not obstruct the area of the front plate. Therefore, the front plate can be used effectively, and components such as the connector and the LED can be sufficiently mounted.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a specific configuration of an electronic circuit package.

FIG. 2 is a perspective view showing an external configuration of a shelf on which the electronic circuit package of the present embodiment is mounted.

FIG. 3 is a perspective view showing a specific configuration of an ejector when the lever is stored.

FIG. 4 is a perspective view showing a specific configuration of an ejector when the lever is pulled out.

FIG. 5 is a sectional view of a part of the base of FIG. 4;

FIG. 6 is a diagram showing a state when an electronic circuit package is inserted into a shelf.

7A and 7B are diagrams showing a state in which the base of the ejector is in contact with a stopper, wherein FIG. 7A is a side view showing a state immediately after the contact, and FIG. 7B is a side view showing a state in which the base 41 is rotated. It is.

FIG. 8 is a view showing a treatment method after the electronic circuit package is inserted into the slot.

FIG. 9 is a perspective view showing an external configuration of a conventional electronic circuit package having an ejector.

FIG. 10 is a perspective view showing an external configuration of a conventional electronic circuit package in which an ejector lever is elongated.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Shelf 11 Case 12,13 Guide metal fittings 14,15 Stopper 20 Electronic circuit package 21 Circuit board 22,23 Connector 24 Front plate 24a Connector 24b LED 30,40 Ejector 31,41 Base 32,42 Lever

Claims (3)

[Claims] 1. An ejector for an electronic circuit package for inserting and removing an electronic circuit package from a shelf, wherein the ejector is rotatably attached to an end of a front plate of the electronic circuit package and is closed to the front plate. When the electronic circuit package is rotated in a direction in which the electronic circuit package is inserted in cooperation with the stopper on the shelf side, the electronic circuit package is rotated in an opening direction with respect to the front plate. A base member for applying a force in a direction in which the circuit package is pulled out; and a lever member slidably attached to the base member so that a length from a rotation axis of the base member can be expanded and contracted. Electronic circuit package ejector. 2. The ejector according to claim 1, wherein a fixing portion for fixing the lever member to the shelf side is formed in a part of the lever member. 3. The ejector according to claim 2, wherein said lever member is made of metal.