JPH09148767A - Structure for preventing incorrect insertion of printed wiring board into housing for printed wiring board assembly - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a structure for preventing incorrect insertion of printed wiring board applicable to an existing housing for printed wiring board assembly in which an existing bottom plate can be used as it is without requiring any special hole for fixing the printed wiring board assembly to the bottom plate additionally. SOLUTION: An incorrect insertion preventive member 50 constituting the inventive structure is a synthetic resin molded component comprising an elongated part 51 having size corresponding to the rail part 40 with guide rib on the bottom plate 30, and stop click parts 54, 55, 56, 57 being engaged with vents 36-1, 36-2 in the bottom plate. The incorrect insertion preventive member 50 is fixed to the bottom plate 30 through engagement of the stop click parts 54, 55, 56, 57 and the vents 36-1, 36-2 in the bottom plate and the elongated part 51 is fitted to the rail part 40 with guide rib. The incorrect insertion preventive member 50 limits insertion of the printed wiring board assembly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for preventing an erroneous insertion of a printed wiring board assembly in a housing for accommodating a printed wiring board assembly, and more particularly to accommodate a plurality of inserted printed wiring board assemblies in a line. The present invention relates to a printed wiring board assembly erroneous insertion prevention structure applied to a printed wiring board assembly housing.

A plurality of printed wiring board assembly accommodating housings are incorporated in a rack of communication equipment. Each housing has a plurality of rails arranged side by side, and a backboard on which a plurality of connectors are mounted side by side corresponding to the rails is mounted on the back side. The housing may have a rail into which the printed wiring board assembly should not be inserted because of the relationship with the electric circuit. If the printed wiring board assembly is mistakenly inserted into a rail into which the printed wiring board assembly should not be inserted, the circuit of the printed wiring board assembly may be destroyed.

Therefore, the accommodating housing has a structure having an erroneous insertion preventing structure for preventing the printed wiring board assembly from being mounted on the predetermined rail.

[0004]

2. Description of the Related Art A conventional printed wiring board assembly erroneous insertion preventing structure is provided with holes in all rail portions of a bottom plate of a housing as shown in Japanese Utility Model Laid-Open No. 164284/58. It has a structure in which a bush for preventing incorrect insertion is inserted into the hole of the rail. When the printed wiring board assembly is erroneously inserted into the predetermined rail, the printed wiring board assembly hits the erroneous insertion preventing bush and is restricted from further insertion. This prevents erroneous insertion of the printed wiring board assembly.

[0005]

However, the conventional structure for preventing incorrect insertion of the printed wiring board assembly has a structure in which a hole for inserting the incorrect insertion preventing bush is specially formed in the bottom plate. Therefore, it cannot be applied to the currently used housing, and a press die for the bottom plate must be newly formed, which is disadvantageous in terms of cost.

Therefore, it is an object of the present invention to provide a structure for preventing the erroneous insertion of a printed wiring board assembly into a housing for housing a printed wiring board assembly, which is adapted to the housing currently used. To do.

[0007]

According to a first aspect of the present invention, the printed wiring board assembly is attached to a housing for housing a printed wiring board assembly having a bottom plate and a top plate, if necessary, so that the printed wiring board assembly is mounted on a predetermined rail. A synthetic resin having a structure for preventing insertion and having an elongated portion having a size corresponding to the rail portion with guide ribs of the bottom plate, and a locking claw portion that is locked to the edge of the ventilation hole of the bottom plate. The printed wiring board assembly erroneous insertion preventing member, which is a molded part, is attached to the bottom plate by the erroneous insertion preventing member for the printed wiring board assembly, the locking claw portion locking the edge of the ventilation hole of the bottom plate. The elongated portion is fitted to the rail portion with the guide rib.

According to the second aspect of the present invention, the printed wiring board assembly is attached to a housing having a bottom plate and a top plate, if necessary, to prevent the printed wiring board assembly from being inserted into a predetermined rail. The printed wiring board assembly, which is a synthetic resin molded component having a long and slender portion longer than the rail portion with guide ribs of the bottom plate and a locking claw portion that is locked to the edge of the ventilation hole of the bottom plate The printed wiring board assembly erroneous insertion prevention member is attached to the bottom plate by the locking claw portion locking the edge of the vent hole of the bottom plate, and the elongated portion is a rail portion with guide ribs. The end portion of the elongated portion is fitted into the notch of the rising rib at the front end of the bottom plate.

According to a third aspect of the present invention, the printed wiring board assembly housing which has a bottom plate and a top plate is retrofitted as necessary to prevent the printed wiring board assembly from being inserted into a predetermined rail. And a printed wiring board assembly erroneous insertion preventing member which is a synthetic resin molded component having a plate portion having a length corresponding to the height of the housing and engaging portions at both ends of the plate portion. The printed wiring board assembly erroneous insertion prevention member is attached by engaging the engaging portion with the guide ribless rail portion of the bottom plate and the guide ribless rail portion of the top plate, and the plate portion including the bottom plate and the top plate. The space between and is vertically crossed.

According to a fourth aspect of the present invention, the printed wiring board assembly housing which has a bottom plate and a top plate is retrofitted as necessary to prevent the printed wiring board assembly from being inserted into a predetermined rail. A columnar printed wiring board assembly erroneous insertion preventing member having a longer length than the rail portion with guide ribs of the bottom plate, and a fixing member for fixing the printed wiring board assembly erroneous insertion preventing member to the rail portion without guide ribs of the bottom plate. And the printed wiring board assembly erroneous insertion prevention member,
The fixing member is fixed to the rail portion without guide ribs and is fitted to the rail portion with guide ribs.

According to a fifth aspect of the present invention, the printed wiring board assembly housing which has a bottom plate and a top plate is retrofitted as necessary to prevent the printed wiring board assembly from being inserted into a predetermined rail. Which has a structure corresponding to the rail portion with guide ribs of the bottom plate, and a band portion around which the rail portion with guide ribs is wound, which is a synthetic resin molded component. The member for preventing erroneous insertion of the printed wiring board assembly is configured such that the rod portion fits into the rail portion with the guide rib and the band portion includes the rail portion with the guide rib.

According to a sixth aspect of the present invention, the printed wiring board assembly housing case having a bottom plate and a top plate is retrofitted as necessary to prevent the printed wiring board assembly from being inserted into a predetermined rail. The printed wiring board assembly erroneous insertion preventing member, which is a synthetic resin molded component having a substantially U-shaped frame having a spring property and locking portions at both ends thereof, Assembly mis-insertion prevention member,
With the substantially U-shaped frame elastically bent, the one engaging portion engages with the guide ribless rail portion of the bottom plate and the other engaging portion engages with the guide ribless rail portion of the top plate. It is configured to be attached together.

According to a seventh aspect of the present invention, the printed wiring board assembly housing which has a bottom plate and a top plate is retrofitted, if necessary, to prevent the printed wiring board assembly from being inserted into a predetermined rail. A printed wiring board assembly made of rubber having an elongated portion having a size corresponding to the rail portion with guide ribs of the bottom plate, and a locking claw portion that is locked to the edge of the ventilation hole of the bottom plate. The printed wiring board assembly misinsertion preventing member comprises an erroneous insertion preventing member, wherein the locking claw portion locks the edge of the vent hole of the bottom plate with the elongated portion slightly stretched, and A structure for preventing erroneous insertion of a printed wiring board assembly into a housing for accommodating a printed wiring board assembly, wherein the elongated portion is attached and fitted to a rail portion with a guide rib.

According to an eighth aspect of the invention, the printed wiring board assembly accommodating housing having a bottom plate and a top plate is retrofitted, if necessary, to prevent the printed wiring board assembly from being inserted into a predetermined rail. The printed wiring board assembly has an erroneous insertion preventing member having an elongated dome portion made of a rubber sheet and an inward folded portion along the peripheral edge of the elongated dome portion. The insertion preventing member is configured to cover the rail portion with the guide rib and the folded-back portion around the back side of the rail portion with the guide rib in a state where the elongated dome portion is slightly stretched.

According to a ninth aspect of the present invention, the printed wiring board assembly accommodating housing having the bottom plate and the top plate is retrofitted, if necessary, to prevent the printed wiring board assembly from being inserted into a predetermined rail. The printed wiring board assembly erroneous insertion prevention member has a length corresponding to the height of the housing, and the printed wiring board assembly erroneous insertion prevention member includes a bottom plate and a top plate. It is attached to, and has a structure that vertically traverses the space between the bottom plate and the top plate.

According to a tenth aspect of the present invention, the printed wiring board assembly housing which has a bottom plate and a top plate is retrofitted as necessary to prevent the printed wiring board assembly from being inserted into a predetermined rail. And a structure for preventing the incorrect insertion of the printed wiring board assembly, which is a synthetic resin molded component of a shape that is fitted and fitted in the notch of the rising rib at the front end of the bottom plate. The member is
It is configured to be fitted in the notch of the rising rib at the front end of the bottom plate.

According to an eleventh aspect of the present invention, the printed wiring board assembly is not attached to a predetermined rail because it is retrofitted to a printed wiring board assembly accommodating housing having a bottom plate and a top plate as needed. A printed wiring board assembly erroneous insertion preventing member, which is a synthetic resin molded component having a main body and having a shape to be fitted and attached to the edge of the vent hole of the bottom plate. The wiring board assembly erroneous insertion prevention member is fitted in the edge of the ventilation hole of the bottom plate, and the main body is located on the rail.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION

[First Embodiment; Embodiment of the Invention of Claim 1] FIGS. 1 and 2
1 shows a structure 10 for preventing incorrect insertion of a printed wiring board assembly according to a first embodiment of the present invention.

For convenience of explanation, first, a rack device 11 to which the structure 10 for preventing incorrect insertion of a printed wiring board assembly is applied will be described with reference to FIG. The rack device 11 has a device body 12. The apparatus main body 12 includes a rack 13, a housing mounting frame 14 mounted on the rack 13, and a printed wiring board assembly housing housing 15 mounted in the housing mounting frame 14. A plurality of printed wiring board assemblies 16 are inserted and mounted side by side in a housing 15 of the apparatus body 12. The front opening 18 of the housing 15 is covered with a cover 17.

The printed wiring board assembly 16 includes a printed wiring board 20, a plurality of electronic components 21 mounted on the printed wiring board 20, and a connector 22 mounted on the front end side of the printed wiring board 20 in the insertion direction. It is composed of. The housing 15 includes a bottom plate 30, a top plate 31, and side plates 3.
2, 33 and a backboard 34. Bottom plate 30
Is made by pressing a metal plate. X1, X
A plurality of guide rails 35-1 to 35-3 extending in two directions
5-n are arranged at equal pitches in the Y1 and Y2 directions and have a large number of ventilation holes 36. Here, reference numeral 35 is used to refer to the guide rails in general. The top 31 is also
Like the bottom plate 30, it is formed by pressing a metal plate, has a plurality of guide rails 37 arranged at equal pitches, and has a large number of ventilation holes 39. Backboard 3
A plurality of connectors 39 are arranged in line 4.

The guide rail 35-1 has a structure in which the rail portions 40 with guide ribs and the rail portions 41 without guide ribs are alternately connected. Other guide rails 35-2, 3
7 has the same structure. Further, the bottom plate 30, the top plate 31, the side plates 32 and 33, and the backboard 34 do not have holes or the like specially provided for the present invention, and are the ones currently used.

In the printed wiring board assembly 16, the lower edge 23 of the printed wiring board 20 is guided by the guide rail 35 of the bottom plate 30, and the upper edge 24 of the printed wiring board 20 is guided by the guide rail 37 of the top plate 31. It is guided and inserted in the X1 direction, the connector 22 is connected to the connector 39, and is mounted in the housing 15.

Next, the structure 10 for preventing incorrect insertion of the printed wiring board assembly will be described. Here, in the housing 15, it is assumed that, of the plurality of guide rails 35, the guide rail 35-2 should not be inserted with the printed wiring board assembly. The printed wiring board assembly erroneous insertion prevention structure 10 includes a portion surrounded by a circle 60 in FIG.
That is, of the guide rails 35-2, the rail portion 4 with guide ribs that is closest to the front opening 18 of the housing 15 is provided.
Applied to 0. Part.

FIGS. 1, 2A, 2B and 2C show a structure 10 for preventing the incorrect insertion of the printed wiring board assembly in the portion surrounded by a circle 60 in FIG. As shown in FIG. 1, the bottom plate 30
Is an elliptical vent hole 36-1,3 elongated in the X1 and X2 directions.
6-2 adjacent to each other, and adjacent ventilation holes 36-1, 36
-2 has the rail part 40 with a guide rib.

The rail portions 40 with guide ribs are X1, X
The rail main body 42 extending in two directions and the guide ribs 43 and 44 on both sides along the rail main body 42 are provided, and the width is W1. The guide ribs 43 and 44 have the vent holes 36-.
It is formed by pressing and bending the edge of 1, 36-2 by a press, and has a height H1.

Further, the vent hole 36-1 is provided at the end in the X1 direction,
It has a cutout 36-1a, and a cutout 36-1b is provided at the end in the X2 direction.
Having. Reference numeral 45 denotes a portion of the bottom plate 30 that faces the notch 36-1a. Reference numeral 46 denotes a notch 36-1b in the bottom plate 30.
This is the part that faces. Similarly, the vent hole 36-2 has a notch 36-2a at the end in the X1 direction and a notch 3-2 at the end in the X2 direction.
6-2b. 47 is a notch 36- in the bottom plate 30.
This is the part facing 2a. 48 is a cutout 3 in the bottom plate 30.
It is a portion facing 6-2b.

The above-described structure of the bottom plate 30 is the structure that the bottom plate currently in use already has. Similarly, referring to FIG. 1, reference numeral 50 denotes a member for preventing incorrect insertion of a printed wiring board assembly, which is a synthetic resin molded component, and has an elongated portion 51, a T-shaped portion 52 at the end of the elongated portion 51 in the X1 direction, X2 of the elongated part 51
T-shaped portion 53 at the end in the direction, locking claws 54 and 55 on the lower surfaces of both ends of the arm portion 52a of the T-shaped portion 52, and locking claws on the lower surfaces of both ends of the arm portion 53a of the T-shaped portion 53 And parts 56 and 57.

The elongated portion 51 is a rail portion 4 with guide ribs.
It has a length L1 corresponding to a length of 0, a width W1 corresponding to the width W1, and a height H2 slightly higher than the height H1. The leg portion 52b of the T-shaped portion 52 extends from the end of the elongated portion 51a in the X1 direction. The leg portion 53b of the T-shaped portion 53 extends from the end of the elongated portion 51a in the X2 direction. The T-shaped portions 52 and 53 have a small thickness T1 and can be easily elastically curved.

The erroneous insertion preventing member 50 is to be attached to the housing case 15 if necessary, and the locking claw portion 54 locks the portion 45 and the locking claw portion 56 locks the portion 46. Then, the locking claw portion 55 locks the portion 47 and the locking claw portion 57 locks the portion 4.
8 and the slender portion 51 has a rail portion 40 with a guide rib.
It is attached in a state of being fitted inside and mounted on the rail main body 42.

The erroneous insertion preventing member 50 functions as a barrier against the printed wiring board assembly which is inserted into the guide rail 35-2 into which the printed wiring board assembly should not be inserted. Next, the operator mistakenly inserts the printed wiring board assembly 16 into the printed wiring board assembly incorrect insertion preventing member 5.
A case will be described where 0 is tried to be inserted into the guide rail 35-2.

The operator mistakenly moves the printed wiring board assembly 16 to the guide rail 3 as shown by reference numeral 62 in FIG.
When it is attempted to insert the printed wiring board 2 in the X1 direction by guiding it to the 5-2, the printed wiring board 2 is inserted at the initial stage of the insertion.
Of the upper tip in the insertion direction of 0, the portion 25 near the lower edge 23 is
It collides with the end surface 58 of the elongated portion 51 in the X2 direction or the end surface 59 of the T-shaped portion 53 in the X2 direction. This limits the printed wiring board assembly 16 from further insertion.

The printed wiring board assembly erroneous insertion preventing member 50 may be attached to the lower surface of the top plate 31 afterwards. [Second Embodiment: Embodiment of the Invention of Claim 2] FIGS. 4 and 5
(A), (B), (C) shows a printed wiring board assembly erroneous insertion prevention structure 10A according to a second embodiment of the present invention.

In the erroneous insertion prevention structure 10A, the printed wiring board assembly erroneous insertion prevention member 50A is the bottom plate 3 of the housing 15.
The structure is retrofitted to 0. Wrong insertion prevention member 50A
Is a member 50 for preventing incorrect insertion of the printed wiring board assembly in FIG.
And an elongated portion 51a formed by extending the elongated portion 51 in the X2 direction.
Is additionally provided. Wrong insertion prevention member 50A
Is the bottom plate 3 as shown in FIGS. 2 (A), (B) and (C).
It is attached to 0. The end portion 5 of the extension portion 51a in the X2 direction
1a-1 is fitted in the notch 71 of the rising rib 70 at the front end of the bottom plate 30. The notch 71 is a guide rail 35-
It is the starting point of 2. The rising rib 70 is a portion on which the insertion / extraction lever of the printed wiring board assembly 16 is engaged.

Even if the operator mistakenly tries to insert the printed wiring board assembly 16 in the X1 direction by guiding it by the guide rail 35-2, the operator hits the end portion 51a-1 and inserts the printed wiring board assembly 16. Is restricted from the beginning. Since the end portion 51a-1 can be seen from the front side of the rack device, the operator can see the printed wiring board assembly 16
Is unlikely to be inserted into the guide rail 35-2. [Third Embodiment: Embodiment of the Invention of Claim 3] FIGS. 6 and 7
(A) and (B) show a printed wiring board assembly erroneous insertion prevention structure 10B according to a third embodiment of the present invention.

The erroneous insertion prevention structure 10B is a structure in which the printed wiring board assembly erroneous insertion prevention member 80 is retrofitted to the housing 15. The erroneous insertion prevention member 80 is a synthetic resin molded component, and includes an elongated plate portion 81, an engaging portion 82 at an upper end of the elongated plate portion 81, and an engaging portion 83 at a lower end of the elongated plate portion 81. Consists of The elongated plate portion 81 has a length L10 substantially equal to the height H10 of the housing 15 and a thin thickness T2, and the erroneous insertion prevention member 80 is easily and elastically curved. You can The engaging portions 82 and 83 have grooves 82a and 83a, respectively.

The erroneous insertion prevention member 80 is supported by an operator in a vertical direction, holds the upper and lower ends, elastically bends the elongated plate portion 81, and inserts it into the housing 15. The lower end groove 83a is formed in the guide rail 35-n-1 of the bottom plate 30.
Of the guide ribless rail portion 41 of the
2a to the corresponding guide rails 37-n-1 of the top plate 31.
It is attached by fitting it to the guide ribless rail portion 84. The guide ribless rail portion 41,
Vents 85 are provided on both sides of 84.

In the attached state, the incorrect insertion preventing member 8
As shown in FIGS. 7A and 7B, 0 vertically traverses the space between the bottom plate 30 and the top plate 31 at the portion of the guide rail 35-n-1. The operator accidentally inserts the printed wiring board assembly 16 into the guide rails 35-n-1,
Even if the guide wire 37-n-1 is used to insert the printed wiring board assembly 16 in the X1 direction, the insertion of the printed wiring board assembly 16 is restricted by the erroneous insertion prevention member 80. [Fourth Embodiment; Embodiment of the Invention of Claim 4] FIG.
(B) and (C) show a printed wiring board assembly erroneous insertion prevention structure 10C according to a fourth embodiment of the present invention.

The erroneous insertion prevention structure 10C is a structure in which the printed wiring board assembly erroneous insertion prevention member 90 is retrofitted to the current bottom plate 30 of the housing 15. Incorrect insertion prevention member 90
Is a prismatic member and is laid across the guide rib-equipped rail portion 40 and the guide rib-less rail portion 41 of the guide rail 35-2. As shown in FIG. 9, the erroneous insertion prevention member 90 is attached to the guide ribless rail portion 41 at two locations by a U-shaped member 91 and a pressing member 92. The holding member 92 has a U-shaped member 91 in which the hole 92a is fitted to the protrusion 90a on the upper surface of the erroneous insertion preventing member 90, and the claws 92b on both sides are applied from the lower side.
The flange 91a is fitted and locked in the notch 91b. In the rail portion 40 with guide ribs, the erroneous insertion prevention member 90 is fitted between the guide ribs 35a and 35b. The U-shaped member 91 and the pressing member 92 form a fixed member.

Even if the operator mistakenly tries to insert the printed wiring board assembly 16 in the X1 direction by guiding it by the guide rail 35-2, the end portion 90b of the erroneous insertion preventing member 90 is prevented.
Therefore, the insertion of the printed wiring board assembly 16 is restricted. [Fifth Embodiment: Embodiment of the Invention of Claim 5] FIG.
(A) and (B) show a printed wiring board assembly erroneous insertion prevention structure 10D according to a fifth embodiment of the present invention.

The erroneous insertion prevention structure 10D is a structure in which the printed wiring board assembly erroneous insertion prevention member 100 is retrofitted to the current bottom plate 30 of the housing 15. As shown in FIG. 11, the erroneous insertion prevention member 100 is a synthetic resin molded component, and has a rod-shaped portion 101 having a U-shaped cross section, a hook portion 102,
103 and band portions 104 and 105. The band portions 104 and 105 have elongated holes 106 and 107 that fit with the hook portions 102 and 103.

In the erroneous insertion preventing member 100, the rod portion 101 is fitted to the rail portion 40 with guide ribs of the guide rail 35-2, the band portions 104 and 105 wind the rail portion 40, and the holes 106 and 107 are hooked. Parts 102, 103
Is attached to the rail portion 40 in a state in which the ends of the band portions 104 and 105 are stopped and the convex portion 108 is fitted in the rod-shaped portion 101.

Even if the operator mistakenly tries to insert the printed wiring board assembly 16 in the X1 direction by guiding it by the guide rail 35-2, the operator hits the end portion 101a of the rod portion 101 and the printed wiring board assembly 16 is hit. Insertion is restricted. [Sixth Embodiment; Embodiment of the Invention of Claim 6] FIG.
(A) and (B) show a printed wiring board assembly erroneous insertion prevention structure 10E according to a sixth embodiment of the present invention.

The erroneous insertion prevention structure 10E is a structure in which the printed wiring board assembly erroneous insertion prevention member 110 is attached to the housing 15. As shown in FIG. 13, the erroneous insertion prevention member 110 is a synthetic resin molded component and includes a substantially U-shaped frame 111 and locking portions 112 and 113 on both end sides thereof. The frame 111 has a height H10 of the housing 15.
And a pillar portion 111a having a length L10 substantially equal to
Arms 111b, 111 extending from the upper and lower ends of 11a
c. The arms 111b and 111c are the pillars 111
It makes an angle of 90 + α degrees with respect to a, and spreads toward the tip. The frame 111 has a spring property. The locking portions 112 and 113 have grooves 112a and 113a.

As shown in FIG. 14, erroneous insertion prevention member 11
In 0, the operator holds the locking portions 112 and 113, supports the erroneous insertion preventing member 110 in the vertical direction, and holds the locking portion 112 by Z2.
In the Z1 direction, lift the locking portion 113 in the Z1 direction,
In this state, the groove 83a at the lower end is moved to the bottom plate 30 by putting it in the housing 15 as shown by the arrow X1 and releasing the hand.
The guide rail 35-2-1 is fitted with the guide ribless rail portion 41, and the groove 82a at the upper end is fitted with the guide ribless rail portion 84 of the corresponding guide rail 37 of the top plate 31.

The erroneous insertion prevention member 110 is shown in FIG.
As shown in (B), due to the spring force of the frame 111,
The locking portion 113 is engaged with the rail portion 41, and the locking portion 112 is kept engaged with the rail portion 84.
Mounted on The operator mistakenly guides the printed wiring board assembly 16 to the guide rail 35-2, and the X
Even if an attempt is made to insert the printed wiring board assembly 16 in one direction, it hits the locking portions 113 and 112 and the insertion of the printed wiring board assembly 16 is restricted. [Seventh Embodiment; Embodiment of the Invention of Claim 7] FIG.
(A) and (B) show a printed wiring board assembly erroneous insertion prevention structure 10F according to a seventh embodiment of the present invention.

The erroneous insertion prevention structure 10F is a structure in which the printed wiring board assembly erroneous insertion prevention member 120 is retrofitted to the housing 15. As shown in FIG. 16, the incorrect insertion prevention member 120 is a molded part made of rubber, and has an elongated portion 121.
And the arm portions 122 and 123 protruding from both ends of the elongated portion 121 in the Y1 and Y2 directions, and the locking claw portions 124, 125, 126 and 127 at the ends of the arm portions 122 and 123.

The erroneous insertion prevention member 120 has the locking claws 124, 125, and 125 when the elongated portion 121 is slightly stretched.
126 and 127 are notches 36-1a, 36-2a and 3 respectively.
The elongated portion 121 is locked to the edges of 6-1b and 36-2b.
Is fitted in the rail portion 40 with the guide ribs.

Even if the operator mistakenly guides the printed wiring board assembly 16 into the guide rail 35-2 and inserts it in the X1 direction, the worker hits the erroneous insertion preventing member 120,
The insertion of the printed wiring board assembly 16 is restricted. [Eighth Embodiment; Embodiment of the Invention of Claim 8] FIG.
(A) and (B) show a printed wiring board assembly erroneous insertion prevention structure 10G according to an eighth embodiment of the present invention.

The erroneous insertion prevention structure 10G is a structure in which the printed wiring board assembly erroneous insertion prevention member 130 is attached to the housing 15. As shown in FIGS. 18 (A), (B), and (C), the misinsertion preventing member 130 is a molded part in which a rubber sheet has an elongated dome shape.
31 and an inward folding portion 132 along the peripheral edge of the elongated dome portion 131.

The erroneous insertion prevention member 120 is slightly stretched in the direction of the arrow in FIG.
As shown in (A) and (B), the rail portion with guide ribs 40 is attached in a state where the folded-back portion 132 is prevented from wrapping around the back side of the rail portion with guide ribs 40 and coming off.

Even if the operator mistakenly tries to insert the printed wiring board assembly 16 in the X1 direction by guiding the printed wiring board assembly 16 by the guide rail 35-2, it hits the incorrect insertion preventing member 130,
The insertion of the printed wiring board assembly 16 is restricted. [Ninth Embodiment: Embodiment of the Invention of Claim 9] FIG. 19 shows a printed wiring board assembly erroneous insertion prevention structure 10H according to a ninth embodiment of the present invention.

The erroneous insertion prevention structure 10H is a structure in which the printed wiring board assembly erroneous insertion prevention member 140 is attached to the housing 15. As shown in FIGS. 20A, 20B, and 20C, the incorrect insertion prevention member 140 is an elongated sheet metal member having a length corresponding to the height of the housing.

As shown in FIG. 19, the erroneous insertion prevention member 140 is attached to the guide rail 35-2 at both ends by being screwed to the bottom plate 30 and the top plate 31.
The space between 0 and the top plate 31 is vertically crossed. Even if the operator mistakenly tries to insert the printed wiring board assembly 16 in the X1 direction by guiding the printed wiring board assembly 16 by the guide rail 35-2, the insertion of the printed wiring board assembly 16 is restricted by the erroneous insertion prevention member 140. It [Tenth Embodiment; Embodiment of the Invention of Claim 10] FIG.
Shows a structure 10I for preventing incorrect insertion of a printed wiring board assembly according to a tenth embodiment of the present invention.

The erroneous insertion prevention structure 10I is a structure in which the printed wiring board assembly erroneous insertion prevention member 150 is retrofitted to the housing 15. 22 (A), (B), (C),
As shown in (D), the erroneous insertion prevention member 150 is a synthetic resin molded component, and includes a main body 151 and an L-shaped hooking portion 152 extending from the main body 151. In the plan view shown in FIG. 22 (C), the main body 151 has an H
It has a V shape and has groove portions 153 and 154 on both sides.

As shown in FIGS. 21 (A), (B), and (C), the misinsertion preventing member 150 is fitted in the portion where the groove portions 153, 154 face the notch 71 of the rising rib 70, and the hook portion 152. Is attached to the rising ribs 70 at the front end of the bottom plate 30 in a state of being wrapped around the lower surface of the rising ribs 70. The main body 151 closes the notch 71 located at the start end of the guide rail 35-2.

Even if the operator mistakenly guides the printed wiring board assembly 16 by the guide rail 35-2 and inserts it in the X1 direction, it hits the erroneous insertion preventing member 150,
The insertion of the printed wiring board assembly 16 is restricted from the beginning. [Eleventh Embodiment; Embodiment of the Invention of Claim 11] FIG.
Shows a structure 10J for preventing incorrect insertion of a printed wiring board assembly according to an eleventh embodiment of the present invention.

The erroneous insertion prevention structure 10J is a structure in which the printed wiring board assembly erroneous insertion prevention member 160 is retrofitted to the housing 15. 24 (A), (B), (C),
As shown in (D), the erroneous insertion prevention member 160 is a synthetic resin molded component, and has a rectangular parallelepiped main body 161 and two arm portions 162, 163 extending from the lower surface of the main body 161.
And the hemispherical protrusions 164 at the tips of the arms 162 and 163.
165, a gap 166 between the lower surface of the main body 161 and the arms 162 and 163, and a central groove 167 on the lower surface of the main body 161.

As shown in FIGS. 23 (A), 23 (B) and 23 (C), the erroneous insertion preventing member 160 has a gap 166 and a bottom plate 30.
Among these, the portion 174 between the vent hole 170 and the vent hole 171 and between the vent hole 172 and the vent hole 173 is sandwiched, and the groove portion 167 engages with the guide ribless rail portion 41 so that the main body portion 161 is the rail portion. 41, which is a hemispherical convex portion 1
64 and 165 are attached with the edges of the ventilation holes 171 and 173 locked.

Even if the operator mistakenly tries to insert the printed wiring board assembly 16 in the X1 direction while guiding it by the guide rail 35-2, the main body portion 1 of the erroneous insertion prevention member 160 is prevented.
At 61, insertion of the printed wiring board assembly 16 is restricted. [Twelfth Embodiment; Embodiment of the Invention of Claim 3] FIG. 25 shows a printed wiring board assembly erroneous insertion prevention structure 10K according to a twelfth embodiment of the present invention.

The erroneous insertion prevention structure 10K is a modification of the printed wiring board assembly erroneous insertion prevention structure 10B of the third embodiment, in which the printed wiring board assembly erroneous insertion prevention member 180 is a housing case. The structure is retrofitted to 15. As shown in FIG. 26, the erroneous insertion prevention member 180 is a synthetic resin molded component, and includes an elongated plate portion 181, two engaging portions 182 and 183 at the upper end of the elongated plate portion 81, and the elongated member. It is composed of two engaging portions 184 and 185 at the lower end of the plate portion 181. The engaging portion 182 has two tongue portions 186 and 187.
A space 188 between the two tongues 186, 187, a projection 190 on one tongue 186 and a hole 19 on another tongue 187.
And 1. The space 188 has a size corresponding to the size of the cross section of the guide ribless rail portion 41. Also,
The protrusion 190 is engaged with the hole 191.

As shown in FIGS. 25 (A), 25 (B), 25 (C) and 25 (D), the erroneous insertion preventing member 180 includes two tongue portions 18
6 and 187 are temporarily expanded and the guide ribless rail part 4
1, the engaging portions 184 and 185 grip the rail portion 41 of the bottom plate 30, the engaging portions 182 and 183 also grip the rail portion 84 without guide ribs of the top plate, and the plate portion 181 and the bottom plate 30. It is attached in a state of vertically traversing the space between the top plate 31 and the top plate 31.

Even if the operator mistakenly tries to insert the printed wiring board assembly 16 in the X1 direction by guiding the printed wiring board assembly 16 by the guide rail 35-2, it hits the incorrect insertion preventing member 180,
The insertion of the printed wiring board assembly 16 is restricted.

[0063]

As described above, according to the first aspect of the present invention,
The printed wiring board assembly mis-insertion prevention member has a structure in which the locking claw part is attached to the bottom plate by locking the edge of the ventilation hole of the bottom plate, and the elongated part is fitted to the rail part with the guide rib. Therefore, it is not necessary to additionally form a special hole or the like for attaching the printed wiring board assembly to the bottom plate, and the existing bottom plate can be used as it is. Therefore, the existing printed wiring board assembly housing casing can be used. A printed wiring board assembly erroneous insertion prevention structure applicable to the body can be realized.

According to the invention of claim 2, it has the same effect as the effect of the invention of claim 1. Furthermore, since the end portion of the elongated portion is configured to fit into the notch of the rising rib at the front end of the bottom plate, the end portion can be seen from the front side of the housing, and therefore the operator , It is possible to make it difficult to insert the printed wiring board assembly into the guide rail to which the incorrect insertion prevention member is attached.

According to the invention of claim 3, it has the same effect as the effect of the invention of claim 1. According to the invention of claim 4, it has the same effect as the effect of the invention of claim 1. According to the invention of claim 5, it has the same effect as the effect by the invention of claim 1. According to the invention of claim 6, it has the same effect as the effect by the invention of claim 1.

According to the invention of claim 7, it has the same effect as the effect of the invention of claim 1. According to the invention of claim 8, it has the same effect as the effect of the invention of claim 1. According to the invention of claim 9, it has the same effect as the effect of the invention of claim 1. According to the invention of claim 10, claim 1
It has the same effect as the invention.

According to the invention of claim 11, the same effect as the effect of the invention of claim 1 is obtained. Further, the erroneous insertion prevention member can be visually observed from the front side of the housing, and therefore,
It is possible to prevent the operator from trying to insert the printed wiring board assembly into the guide rail to which the incorrect insertion prevention member is attached.

According to the twelfth aspect of the invention, the same effect as that of the first aspect of the invention can be obtained.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a structure for preventing incorrect insertion of a printed wiring board assembly according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a structure for preventing incorrect insertion of the printed wiring board assembly of FIG.

FIG. 3 is an exploded view of a rack device to which the printed wiring board assembly erroneous insertion prevention structure of FIGS. 1 and 2 is applied.

FIG. 4 is an exploded perspective view showing a structure for preventing incorrect insertion of a printed wiring board assembly according to a second embodiment of the present invention.

5 is a diagram showing a structure for preventing the incorrect insertion of the printed wiring board assembly in FIG.

FIG. 6 is a view for explaining the assembly of the printed wiring board assembly erroneous insertion prevention structure according to the third embodiment of the present invention.

FIG. 7 is a diagram showing a structure for preventing incorrect insertion of the printed wiring board assembly of FIG.

FIG. 8 is a view for explaining the assembly of the printed wiring board assembly erroneous insertion prevention structure according to the fourth embodiment of the present invention.

FIG. 9 is a perspective view showing a structure for fixing an erroneous insertion prevention member in FIG.

FIG. 10 is a view for explaining the assembly of the printed wiring board assembly erroneous insertion prevention structure according to the fifth embodiment of the present invention.

FIG. 11 is a view showing the erroneous insertion prevention member in FIG. 10 taken out.

FIG. 12 is a view for explaining the assembly of the printed wiring board assembly erroneous insertion prevention structure according to the sixth embodiment of the present invention.

FIG. 13 is a view showing the erroneous insertion preventing member in FIG. 12 taken out.

FIG. 14 is a view for explaining the attachment of the incorrect insertion prevention member of FIG.

FIG. 15 is a view for explaining the assembly of the printed wiring board assembly erroneous insertion prevention structure according to the seventh embodiment of the present invention.

16 is a view showing the erroneous insertion preventing member in FIG. 15 taken out.

FIG. 17 is a view for explaining the assembly of the printed wiring board assembly erroneous insertion prevention structure according to the eighth embodiment of the present invention.

FIG. 18 is a diagram showing the erroneous insertion preventing member in FIG. 17 taken out.

FIG. 19 is a view for explaining the assembly of the printed wiring board assembly erroneous insertion prevention structure according to the ninth embodiment of the present invention.

20 is a diagram showing the erroneous insertion preventing member in FIG. 19 taken out.

FIG. 21 is a view for explaining the assembly of the printed wiring board assembly erroneous insertion prevention structure according to the tenth embodiment of the present invention.

22 is a view showing the erroneous insertion preventing member in FIG. 21 taken out.

FIG. 23 is a view for explaining the assembly of the printed wiring board assembly erroneous insertion prevention structure according to the eleventh embodiment of the present invention.

FIG. 24 is a diagram showing the erroneous insertion prevention member in FIG. 23 taken out.

FIG. 25 is a view for explaining the assembly of the printed wiring board assembly erroneous insertion prevention structure according to the twelfth embodiment of the present invention.

FIG. 26 is a view showing the erroneous insertion preventing member in FIG. 25 taken out.

[Explanation of symbols]

10, 10A to 10K Printed wiring board assembly erroneous insertion prevention structure 11 Frame device 15 Printed wiring board assembly housing 16 Printed wiring board assembly 30 Bottom plate 31 Top plate 35 Guide rails 36-1, 36-2, 85 through Pore 40 Rail portion with guide rib 41, 84 Rail portion without guide rib 42 Rail main body portion 43, 44 Guide rib 50, 50A, 80, 90, 100, 110, 120,
130, 140, 150, 160, 180 Printed wiring board assembly erroneous insertion prevention member 51 Elongated portion 51a Extended portion 51a 52, 53 T-shaped portion 54 to 57 Locking claw portion 70 Rising rib 71 at front end of bottom plate 71 Notch 81 Elongated Plate portion 82,83 engaging portion 82a, 83a groove 91 U-shaped member 92 pressing member 101 rod-shaped portion 102, 103 hook portion 104, 105 band portion 111 substantially U-shaped frame 112, 113 locking portion 112a, 113a Groove 121 Elongated part 122, 123 Arm part 124-127 Engaging claw part 131 Elongated dome part 132 Folded part to the inside 151 Main body part 152 L-shaped hooking part 153, 154 Groove part 161 Rectangular parallelepiped main part 162, 163 Arm Part 164,165 Hemispherical convex part 166 Gap between the lower surface of the main body part and the arm part 167 Groove 181 Plate portion 182, 183, 184, 185 Engagement portion 186, 187 Tongue portion 188 Space 190 Protrusion 191 hole

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor ▲ Yuji Take Yuji 1015 Kamiodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture, Fujitsu Limited (72) Inventor Hisao Hayashi 1015, Kamedotachu, Nakahara-ku, Kawasaki City, Kanagawa Prefecture Fujitsu Stock In-house (72) Inventor Mari Mabuchi 1015 Kamiodanaka, Nakahara-ku, Kawasaki-shi, Kanagawa Fujitsu Limited

Claims (11)

[Claims] 1. A structure for retrofitting a printed wiring board assembly housing having a bottom plate and a top plate, if necessary, to prevent the printed wiring board assembly from being inserted into a predetermined rail. A printed wiring board assembly erroneous insertion which is a synthetic resin molded part having an elongated portion having a size corresponding to the rail portion with the guide rib of the bottom plate and a locking claw portion which is locked to the edge of the ventilation hole of the bottom plate. The printed wiring board assembly erroneous insertion prevention member is attached to the bottom plate by the locking claw part locking the edge of the ventilation hole of the bottom plate, and the elongated part is a rail part with guide ribs. A structure for preventing erroneous insertion of a printed wiring board assembly into a housing for housing a printed wiring board assembly, characterized by being fitted together. 2. A structure for retrofitting a printed wiring board assembly housing having a bottom plate and a top plate, if necessary, to prevent the printed wiring board assembly from being inserted into a predetermined rail. , An elongated portion longer than the rail portion with guide ribs of the bottom plate,
The printed wiring board assembly erroneous insertion preventing member, which is a synthetic resin molded part having a locking claw portion that is locked to the edge of the ventilation hole of the bottom plate, is provided. The claw part locks the edge of the ventilation hole of the bottom plate and is attached to the bottom plate, and the elongated part is fitted to the rail part with the guide rib,
A structure for preventing erroneous insertion of a printed wiring board assembly in a housing for accommodating a printed wiring board assembly, characterized in that an end of the elongated portion is fitted in a notch of a rising rib at a front end of the bottom plate. . 3. A structure which is retrofitted to a printed wiring board assembly housing having a bottom plate and a top plate as necessary to prevent the printed wiring board assembly from being inserted into a predetermined rail. A printed wiring board assembly erroneous insertion prevention member which is a synthetic resin molded component having a plate portion having a length corresponding to the height of the housing and engaging portions at both ends of the plate portion, The wiring board assembly erroneous insertion prevention member is attached with the engaging portion engaged with the guide ribless rail portion of the bottom plate and the guide ribless rail portion of the top plate, and the plate portion is a space between the bottom plate and the top plate. A structure for preventing erroneous insertion of a printed wiring board assembly into a housing for housing a printed wiring board assembly, characterized in that it is configured to traverse vertically. 4. A structure which is retrofitted to a printed wiring board assembly housing having a bottom plate and a top plate as necessary to prevent the printed wiring board assembly from being inserted into a predetermined rail. A bottom-ribbed printed-wiring-board assembly erroneous insertion prevention member that is longer than the rail portion with guide ribs; A printed wiring board assembly wherein the member for preventing incorrect insertion of the printed wiring board assembly is fixed to the rail portion without guide ribs by the fixing member and is fitted to the rail portion with guide ribs. Structure to prevent incorrect insertion of the printed wiring board assembly into the housing. 5. A structure which is retrofitted to a printed wiring board assembly housing having a bottom plate and a top plate as necessary to prevent the printed wiring board assembly from being inserted into a predetermined rail. A printed wiring board assembly erroneous insertion preventing member which is a synthetic resin molded component having a bar-shaped portion having a size corresponding to the rail portion with guide ribs of the bottom plate and a band portion around which the rail portion with guide ribs is wound; In the wiring board assembly erroneous insertion prevention member, the rod portion is fitted to the rail portion with the guide rib, and the band portion is
A structure for preventing erroneous insertion of a printed wiring board assembly into a housing for housing a printed wiring board assembly, characterized in that a rail portion with guide ribs is wound. 6. A structure which is retrofitted to a printed wiring board assembly housing having a bottom plate and a top plate as necessary to prevent the printed wiring board assembly from being inserted into a predetermined rail. , A wiring board assembly erroneous insertion preventing member which is a synthetic resin molded part having a substantially U-shaped frame having a spring property and locking portions at both ends thereof, and preventing the erroneous insertion of the printed wiring board assembly. In the member, with the substantially U-shaped frame elastically bent, the one locking portion is engaged with the guide ribless rail portion of the bottom plate and the other locking portion is the guide ribless rail portion of the top plate. A structure for preventing erroneous insertion of a printed wiring board assembly into a housing for accommodating a printed wiring board assembly, characterized in that the structure is engaged with and attached to. 7. A structure which is retrofitted to a printed wiring board assembly housing having a bottom plate and a top plate as necessary to prevent the printed wiring board assembly from being inserted into a predetermined rail. From a rubber printed wiring board assembly erroneous insertion prevention member having an elongated portion having a size corresponding to the rail portion with guide ribs of the bottom plate and a locking claw portion that is locked to the edge of the ventilation hole of the bottom plate In the printed wiring board assembly erroneous insertion prevention member, the locking claw portion locks the edge of the vent hole of the bottom plate and is attached to the bottom plate in a state where the elongated portion is slightly stretched. A structure for preventing erroneous insertion of a printed wiring board assembly into a housing for accommodating a printed wiring board assembly, characterized in that the portion is fitted to a rail portion with a guide rib. 8. A structure for retrofitting a printed wiring board assembly housing having a bottom plate and a top plate, if necessary, to prevent the printed wiring board assembly from being inserted into a predetermined rail. A printed wiring board assembly erroneous insertion preventing member having an elongated dome portion made of a rubber sheet and an inward folded portion along the periphery of the elongated dome portion, wherein the printed wiring board assembly erroneous insertion preventing member is A printed wiring board assembly, characterized in that the elongated dome portion is slightly stretched and covers the guide ribbed rail portion, and the folded-back portion wraps around the back side of the guide ribbed rail portion. Structure to prevent incorrect insertion of the printed wiring board assembly into the housing. 9. A structure for retrofitting a printed wiring board assembly housing having a bottom plate and a top plate, if necessary, to prevent the printed wiring board assembly from being inserted into a predetermined rail. , A slender printed wiring board assembly erroneous insertion preventing member having a length corresponding to the height of the housing, the printed wiring board assembly erroneous insertion preventing member being attached to the bottom plate and the top plate. A structure for preventing erroneous insertion of a printed wiring board assembly into a housing for accommodating a printed wiring board assembly, characterized in that a space between the top plate and the top plate is vertically traversed. 10. A structure for retrofitting a printed wiring board assembly accommodating housing having a bottom plate and a top plate, if necessary, to prevent the printed wiring board assembly from being inserted into a predetermined rail. , A printed wiring board assembly erroneous insertion preventing member which is a synthetic resin molded part having a shape to be fitted into the notch of the rising rib at the front end of the bottom plate, and the printed wiring board assembly erroneous insertion preventing member is A structure for preventing erroneous insertion of a printed wiring board assembly into a housing for accommodating a printed wiring board assembly, characterized in that the structure is fitted in a notch in a rising rib at a front end. 11. A structure, which is retrofitted to a printed wiring board assembly housing having a bottom plate and a top plate, if necessary, to prevent the printed wiring board assembly from being inserted into a predetermined rail. , A printed wiring board assembly erroneous insertion preventing member which is a synthetic resin molded part having a shape to be fitted and attached to the edge of the ventilation hole of the bottom plate, and the printed wiring board assembly erroneous. A printed wiring board to a housing for housing a printed wiring board assembly, wherein the insertion preventing member is fitted in the edge of the ventilation hole of the bottom plate, and the main body is located on the rail. Structure for preventing incorrect insertion of assembly.