JP3265520B2 - Fire alarm equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to fire alarm equipment such as a fire receiver, a relay, a display, a smoke control panel for fire prevention, and a gas leak receiver. Equipment for fire alarm equipment equipped with a printed circuit board equipped with a ROM rewrite connector and optional connector so that the system can be changed without removing the ROM when the user requests expansion or system change It is about.

[0002]

2. Description of the Related Art FIG. 15 shows an optional connector and a ROM.
FIG. 16 is a perspective view showing a state in which a door of a conventional fire alarm equipment, for example, a fire receiver mounted with a printed circuit board having a rewrite connector, is open. FIG. 16 has a ROM rewrite connector mounted on the fire receiver. FIG. 17 is an explanatory view showing a relationship between a printed board and a ROM rewriting device, FIG. 17 is a plan view showing an attached state of the printed board, FIG. 18 is a cross-sectional view taken along line AA of FIG. 17, and FIG. FIG. In each of the figures, reference numeral 1 denotes a housing of a fire receiver, and 2 denotes a door which is openably and closably attached to the housing 1 via a hinge, and a window is provided slightly above a central portion. Reference numeral 3 denotes an operation panel provided on the door 2, 4 denotes a display plate, 5 denotes an additional display plate, and 6 denotes a reinforcing plate of the display plate 4. Reference numeral 7 denotes a single-sided printed circuit board fixed to the back surface of the display plate 4 serving as a base, and 8 denotes a printed circuit board fixed to the back surface of the operation panel 3 serving as a base via first spacers 9 (FIGS. 18 and 19). A double-sided printed circuit board (hereinafter referred to as a ROM board), 10 is a printed circuit board fixed to the back plate of the housing 1 serving as a base, 11 is a terminal block mounted on the printed circuit board 10, and 12 is a printed circuit board 10 , A transformer 13 mounted on the back plate, and 14 a rechargeable backup power supply.
Circuit components (not shown) and the like are mounted on the printed boards 7 and 10, respectively. Also, the ROM board 8 has
In addition to the circuit components, a plurality of ROMs in which information for controlling the controlled devices that are linked to the fire detectors on each floor are stored for each floor, and a ROM rewriting connector 17 and Another optional connector (not shown) is attached. The ROM board 8 serves as the heart of the fire receiver, so the surface of the ROM board 8 is protected by a similar insulating sheet 15 via the second spacer 16. The ROM rewriting connector 17 is provided to enable a system change or the like without removing the ROM when a user requests expansion or system change after shipment of the product.

The ROM board 8 is formed with a concave notch 18 indicating the position of the ROM rewriting connector 17.
The ROM rewriting connector 17 is installed with the edge of the insertion side end substantially coincident with the bottom of the concave notch 18.

The insulating sheet 15 also has a ROM board 8
A similar cutout 19 is formed at a position corresponding to the notch 18 of FIG. Reference numeral 20 denotes a ROM rewriting device. Reference numeral 21 denotes a connector of the ROM rewriting device 20. The connector 21 is connected to the ROM rewriting connector 17 of the ROM board 8 when an extension or system is changed, and the ROM rewriting device 20 stores program control data in the ROM. The information is rewritten.

[0005] Such a fire receiver issues an alarm when a fire occurs, and turns on the indicator lamp of the area on the display panel 4.

[0006]

In the conventional fire alarm equipment, a fire receiver is provided with a printed circuit board such as a ROM board 8 covered with an insulating sheet 15 having a similar shape to the printed circuit board. It is designed to prevent accidents that come into contact with printed wiring patterns and circuit components.
R mounted on the back of a printed circuit board such as OM board 8
Since the OM rewrite connector 17 and other optional connectors are left bare, there is a risk of touching with a hand, contact with a driver or the like, or erroneous connection of another connector.

Such a problem can be solved by placing a cap on the ROM rewriting connector 17 or another optional connector at the time of product shipment. However, as the number of connectors increases, the number of caps increases, and the price increases accordingly. It becomes expensive and causes problems such as forgetting to attach.

SUMMARY OF THE INVENTION In view of the above, the present invention provides a fire alarm equipment which can easily protect a connector of a printed circuit board for coping with expansion or system change after product shipment without increasing the number of parts. The purpose is to gain.

[0009]

According to a first aspect of the present invention, there is provided an apparatus for fire alarm equipment, comprising: a printed board on which a connector is mounted; a base for fixing the printed board via a support; An insulating sheet that covers a component or a wiring pattern on the surface of the printed circuit board, has a bent portion that covers a part or the entirety of the insertion port of the connector at an edge, and is attached to the surface of the printed circuit board. It is a thing.

In the fire alarm equipment according to a second aspect of the present invention, a concave notch is formed in a peripheral portion, and a connector is provided on a rear surface of the device with the insertion notch side end edge. A printed circuit board mounted so as to substantially coincide with the bottom of the printed circuit board, a base for fixing the printed circuit board via the first spacer, and a base shape having a basic shape covering the entire surface including the concave cutout portion of the printed circuit board. And a cut-and-raised portion is formed at a position corresponding to the concave cut-out portion of the printed circuit board so as to cover the insertion opening of the connector, and is attached to the surface of the printed circuit board via a second spacer. And an insulating sheet.

In the fire alarm equipment according to a third aspect of the present invention, the width of the cut-and-raised portion of the insulating sheet is equal to or slightly smaller than the width of the concave notch of the printed circuit board. It is set small.

Further, in the fire alarm equipment according to a fourth aspect of the present invention, the width of the cut-and-raised portion of the insulating sheet is set to be slightly larger than the width of the concave notch of the printed circuit board. It is.

The fire alarm equipment according to a fifth aspect of the present invention is characterized in that a wide portion that engages with the lower surface of the edge of the concave notch of the printed circuit board is provided at the tip of the cut and raised portion of the insulating sheet. It is formed.

In the fire alarm equipment according to a sixth aspect of the present invention, the cut-and-raised portion of the insulating sheet is set at the base end to have the same width as the width of the concave cut-out portion of the printed circuit board. A first fold, a first surface portion having a small area formed continuously from the first fold, and a second surface portion having a large area formed continuously from the first surface portion. And a second fold formed of a constricted portion set at the boundary between the first and second surface portions or at a position before and after the boundary, and the first fold is located upward and the second fold is located downward. In FIG.

Further, in the fire alarm equipment according to a seventh aspect of the present invention, the base for fixing the printed circuit board is provided with an engaging portion with which the tip of the cut-and-raised portion of the insulating sheet can be engaged. Things.

[0016]

According to the first aspect of the present invention, when the insulating sheet is attached to the surface of the printed circuit board and the edge is bent, a part of the insertion port of the connector attached to the printed circuit board is bent by the bent portion. The entirety is covered, and erroneous connection of the connector can be prevented.

Further, in the second aspect of the present invention, when the insulating sheet is attached to the printed board via the second spacer, and a portion corresponding to the concave cutout portion of the printed board is cut and raised, The insertion portion of the connector of the printed circuit board is covered and protected by the extension.

In the third aspect of the present invention, the width of the cut-and-raised portion of the insulating sheet is set to be equal to or slightly smaller than the width of the concave cut-out portion of the printed circuit board. By simply cutting and raising a portion of the insulating sheet corresponding to the concave cutout portion of the printed board, it is possible to cover the insertion port of the connector of the printed board.

In the fourth aspect of the present invention, the width dimension of the cut-and-raised portion of the insulating sheet is set slightly larger than the width dimension of the concave cut-out portion of the printed circuit board.
When the portion corresponding to the concave notch of the printed circuit board in the insulating sheet is cut and raised, both edges of the cut and raised portion engage with both side surfaces of the concave notch while covering the insertion hole of the connector of the printed circuit board. Then fixed.

According to the fifth aspect of the present invention, since a wide portion is formed at the tip of the cut-and-raised portion of the insulating sheet so as to engage with the lower surface of the edge of the concave cut-out portion of the printed circuit board. When the portion of the insulating sheet corresponding to the concave notch of the printed circuit board is cut and raised, the wide end of the cut and raised portion of the insulating sheet is covered with the edge of the concave notch while covering the insertion port of the connector of the printed circuit board. It is engaged with and fixed to the lower surface.

In the sixth aspect of the present invention, the cut-and-raised portion of the insulating sheet is provided at the base end thereof with the first fold having the same size as the width of the concave cut-out portion of the printed circuit board. A first surface portion having a small area continuously formed from the first fold; a second surface portion having a large area formed continuously from the first surface portion; A second constricted portion set at the boundary of the second surface portion or at a position before and after the boundary.
And the first fold upward,
When each of the second folds is bent downward, both side edges of the second surface engage with the first surface side cuts remaining in the insulating sheet body and are fixed by the insulating sheet itself.

Further, in the seventh aspect of the present invention, the base for fixing the printed circuit board is provided with the engaging portion with which the tip of the cut-and-raised portion of the insulating sheet can be engaged. Cut and raise the part corresponding to the concave notch on the printed circuit board and bend it until the end of the cutout is beyond the engagement part. The distal end is engaged with and fixed to the engaging portion on the base side.

[0023]

【Example】

Embodiment 1 FIG. Hereinafter, the present invention will be described with reference to the illustrated embodiments.
FIG. 1 shows a printed circuit board (hereinafter referred to as a ROM board) having a ROM rewriting connector mounted on a fire alarm equipment, for example, a fire receiver according to a first embodiment of the present invention.
FIG. 2 is a perspective view showing the relationship between the ROM and the insulating sheet.
FIG. 3 is a plan view showing the mounting state of the board to the base, FIG. 3 is a cross-sectional view taken along line BB of FIG. 2, and FIG. 4 is a front view of FIG. The same reference numerals are given. In each of the figures, the surface of the ROM board 8 fixed to the back surface of the operation panel 3 serving as a base via a first spacer 9 serving as a support portion according to the present embodiment via a second spacer 16. An insulating sheet 30 is attached.

The insulating sheet 30 has a basic shape set to cover the entire surface including the concave notch 18 of the ROM board 8.
Is cut and raised downward along the shape of the concave notch 18, and the cut and raised portion 31
The connector plug of the rewriting connector 17 is covered. Further, the cut-and-raised portion 31 is set so that the width dimension a (FIG. 4) is slightly larger than the width dimension b (FIG. 2) of the concave cutout portion 18 (a> b).

In the fire receiver having the above-described structure, which is a device for fire alarm equipment of the present embodiment, the insulating sheet 30 is attached to the ROM board 8 via the second spacer 16 and the ROM
When a portion corresponding to the concave notch 18 of the board 8 is cut and raised, the cut and raised portion 31 covers and protects the entire insertion hole of the connector on the printed circuit board. In this embodiment, the width of the cut-and-raised portion 31 of the insulating sheet 30 is set to RO
Since the width of the concave notch 18 of the M board 8 is set to be slightly larger than the width of the concave notch 18, the cut-and-raised portion 31 covers the connector insertion port of the ROM rewrite connector 17 and has a proximal end (a fold). Side) are engaged with and fixed to both side surfaces of the concave notch 18. Therefore, even if spring back occurs in the fold 32 of the insulating sheet 30, the spring back can be pressed by both side surfaces of the concave notch 18.

In this embodiment, the width of the cut and raised portion 31 of the insulating sheet 30 is set slightly larger than the width of the concave notch 18 of the ROM board 8 so that the insulating sheet 3
The spring back generated in the fold 32 of the zero is received on both side surfaces of the concave notch portion 18. However, the spring back does not occur, or if it does occur, it is weak. In the case of the insulating sheet 30 that can maintain the bent state of the cutout 31, the width of the cut-and-raised portion 31 is set to be equal to or slightly smaller than the width of the concave cutout 18 of the ROM board 8. Is also good.

Further, in this embodiment, the cut-and-raised portion 31 covers the entire connector insertion port of the ROM rewrite connector 17, but if it is only necessary to prevent incorrect connection to this insertion port, Alternatively, a part of the insertion port may be covered.

In this embodiment, a concave notch 18 is formed on the ROM board 8 and a ROM rewriting connector 17 is mounted on the back surface thereof. However, the concave notch 18 is formed on the ROM board 8. The ROM rewriting connector 17 may be attached to the surface thereof.

Further, in this embodiment, the bent portion of the insulating sheet 30 is formed as the cut-and-raised portion 31, but one side of the insulating sheet 30 is bent over the entire length without cutting the edge of the insulating sheet 30. You may do so.

Further, in this embodiment, the basic shape of the insulating sheet 30 is set to be large enough to cover the entire surface of the ROM board 8 including the concave notch portion 18. The size may be set to a size that covers the wiring pattern, that is, a size that can protect the parts and the wiring pattern that are difficult to be damaged and the insertion portion of the connector.

Embodiment 2 FIG. FIG. 5 is a plan view showing a state in which a device for fire alarm equipment according to a second embodiment of the present invention, for example, a ROM board of a fire receiver is mounted on a base, and FIG.
FIG. 7 is a front view of FIG. 6, and portions corresponding to the first embodiment are denoted by the same reference numerals. In this embodiment, the cut-and-raised portion 41 of the insulating sheet 40 is set to be the same as the width of the concave cut-out portion 18 of the ROM board 8 and the first cut-out portion 41 is located within the concave cut-out portion 18.
The surface 42 and the width of the concave notch 18 are set slightly larger than the width of the concave notch 18 so as to protrude downward from the concave notch 18 so that R
Second covering the connector outlet of the OM rewriting connector 17
And a shoulder portion 44, 45 of the second surface portion 43.
Are designed to be able to engage with the lower surface of the edge of the concave notch 18, and other configurations are the same as those of the first embodiment.

In this embodiment, even if the spring back of the fold 46 of the insulating sheet 40 is strong, it can be reliably held down by the lower surface of the edge of the concave notch 18.

Embodiment 3 FIG. FIG. 8 is a plan view showing an insulating sheet for protecting a ROM board of a fire alarm equipment, for example, a fire alarm device according to a third embodiment of the present invention, and FIG.
FIG. 9 is a plan view showing a state in which the board is attached to the base.
FIG. 11 is a front view of FIG. 10, and portions corresponding to the above-described embodiments are denoted by the same reference numerals. In this embodiment, the insulating sheet 50 is used.
At its base end, the same dimension c as the width dimension b (see FIG. 2) of the concave notch 18 of the ROM board 8
A first fold 52 set to (c = b), and a first trapezoidal area having a smaller trapezoidal area decreasing from the first fold 52 toward the front end.
Surface portion 53, a second surface portion 54 having a trapezoidal area having a large area that expands divergently from the upper side of the trapezoid of the first surface portion 53 toward the tip, and a boundary between the first and second surface portions 53, 54 And the second fold 55 set to
The second fold 55 is bent downward, and the other fold 52 is bent upward. The other configurations are the same as those of the above-described embodiments.

In this embodiment, the dimension of the lower side of the trapezoid of the second surface portion 54, that is, the width dimension d of the tip of the cut-and-raised portion 51 is larger than the width dimension b of the concave cutout portion 18. (D> b) was set. Therefore, when the first fold 52 is folded upward (valley fold) and the second fold 55 is folded downward (mountain fold), both side edges of the second surface portion 54 are attached to the main body of the insulating sheet 50. The remaining first surface side cuts 56 and 57 are engaged, and the cut-and-raised portion 51 is fixed by the insulating sheet 50 itself.

In this embodiment, the first surface 53 and the second surface 54 are formed in a trapezoidal shape.
By forming the boundary between 3 and 54 into a constricted shape, the surface portions 53 and 54 may be formed in a substantially trapezoidal shape. For example, the boundary portion between the surface portions 53 and 54 may be formed in a U-shape, a V-shape, or a constricted shape in a gentle arc shape.

Further, in this embodiment, the second fold 55 is set at the boundary between the first surface 53 and the second surface 54, but the second fold 55 is formed by the first surface 53 and the second surface 55. The position may be set at a position before and after the boundary of the surface portion 54, that is, at a position deviated to one of the boundaries from the boundary.

Embodiment 4 FIG. FIG. 12 shows a device for fire alarm equipment according to a fourth embodiment of the present invention, for example, a ROM of a fire receiver.
FIG. 13 is a plan view showing a state in which the board is attached to the base, and FIG.
2 is a sectional view taken along the line EE of FIG. 2, and FIG. 14 is a front view of FIG. 13. In each figure, the same reference numerals are given to portions corresponding to the respective embodiments described above. In this embodiment, the insulating sheet 60 is used.
The width dimension e of the cut-and-raised portion 61 is set to be equal to or smaller than the width dimension b (see FIG. 2) of the concave notch portion 18 of the ROM board 8 (e ≦ b). The operation panel 3 is provided with a projection 62 which is an engagement portion with which the tip of the cut-and-raised portion 61 of the insulating sheet 60 can be engaged. The other configurations are the same as those of the above-described embodiments. is there.

In this embodiment, when the cut-and-raised portion 61 of the insulating sheet 60 is bent until the tip thereof exceeds the protrusion 62, the cut-and-raised portion 61 becomes the ROM rewriting connector 1
7 is covered with the projection 62 on the operation panel 3 and fixed, so that the spring at the fold portion of the insulating sheet 60 is formed regardless of the shape of the cut-and-raised portion 61. The back can be reliably held down.

In this embodiment, the engaging portion is formed as the projection 62. However, the engaging portion may be formed as a groove into which the tip of the cut-out portion 61 is engaged.

[0040]

As described above, according to the first aspect of the present invention, the bent portion which covers the components or the wiring pattern on the surface of the printed circuit board and covers a part or the whole of the insertion hole of the connector is provided at the end. Since it is formed on the edge, erroneous connection to the connector can be easily prevented without increasing the number of parts.
Further, according to the second aspect of the present invention, the insulating sheet for protecting the printed circuit board is set to a size that covers the entire surface including the concave notched portion of the printed circuit board, and the insulating sheet is provided in the concave notched portion of the printed circuit board. At the corresponding position, a cut-and-raised portion is formed to cover the connector's insertion hole, which is almost aligned with the bottom of the concave notch on the printed circuit board, so that the connector's insertion hole can be easily inserted without increasing the number of parts Can be protected. According to the third aspect of the present invention, the width of the cut-and-raised portion of the insulating sheet is set to be equal to or slightly smaller than the width of the concave notch of the printed circuit board. It is possible to cover the insertion opening of the connector of the printed circuit board only by cutting and raising a portion corresponding to the concave cutout portion of the printed circuit board. Further, the fourth aspect of the present invention.
According to the invention, the width dimension of the cut-and-raised portion of the insulating sheet,
Since the width is set slightly larger than the width of the concave notch of the printed circuit board, both edges of the cut-and-raised part can be engaged and fixed by both sides of the concave notch, and a spring is attached to the fold of the insulating sheet. Even if a bag is formed, it can be pressed by both side surfaces of the concave notch. According to the fifth aspect of the present invention, the tip of the cut-and-raised portion of the insulating sheet is
A wide portion that engages with the lower surface of the edge of the concave notch of the printed circuit board is securely pressed by the lower surface of the edge of the concave notch even if the spring back of the fold of the insulating sheet is strong. be able to. Further, the sixth aspect of the present invention.
According to the invention, the cut-and-raised portion of the insulating sheet is formed from a first fold whose base end is set to the same dimension as the width of the concave cutout portion of the printed circuit board, and from the first fold. A continuously formed first surface portion having a small area, a second surface portion having a large area formed continuously from the first surface portion, and a boundary or a position before and after the boundary between the first and second surface portions. And a second fold formed of a constricted portion set as described above, and the first fold is formed upward and the second fold is formed downward, so that the second fold is formed. Both side edges of the surface can be engaged with the first surface side cut remaining in the insulating sheet body, and can be fixed by the insulating sheet itself. Further, according to the seventh aspect of the present invention, the base for fixing the printed circuit board is provided with the engaging portion with which the tip of the cut-and-raised portion of the insulating sheet can be engaged. regardless of,
The springback at the fold of the insulating sheet can be reliably suppressed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a relationship between a printed circuit board having a connector mounted on a fire alarm equipment according to a first embodiment of the present invention and an insulating sheet.

FIG. 2 is a plan view showing a state where the printed circuit board of FIG. 1 is attached to a base.

FIG. 3 is a sectional view taken along line BB of FIG. 2;

FIG. 4 is a front view of FIG. 3;

FIG. 5 is a plan view showing a state in which a printed circuit board having a connector mounted on a device for fire alarm equipment according to a second embodiment of the present invention is mounted on a base.

FIG. 6 is a sectional view taken along line CC of FIG. 5;

FIG. 7 is a front view of FIG. 6;

FIG. 8 is a plan view showing an insulating sheet for protecting a printed circuit board having a connector provided with equipment for fire alarm equipment according to a third embodiment of the present invention.

FIG. 9 is a plan view showing a state in which a printed circuit board having a connector mounted on the fire alarm equipment according to the third embodiment is attached to a base.

FIG. 10 is a sectional view taken along line DD in FIG. 9;

FIG. 11 is a front view of FIG. 10;

FIG. 12 is a plan view showing a state in which a printed circuit board having a connector mounted on a fire alarm equipment according to a fourth embodiment of the present invention is mounted on a base.

FIG. 13 is a sectional view taken along line EE of FIG. 12;

FIG. 14 is a front view of FIG.

FIG. 15 is a perspective view showing a state where a door of a conventional fire alarm equipment is opened.

FIG. 16 is an explanatory diagram showing a relationship with a printed board ROM rewriting device having a connector mounted on a conventional fire alarm equipment.

FIG. 17 is a plan view showing a state in which a printed circuit board having a connector mounted on a conventional fire alarm equipment is mounted on a base.

18 is a cross-sectional view taken along line AA of FIG.

FIG. 19 is a front view of FIG. 18;

[Explanation of symbols]

 Reference Signs List 3 operation panel (base) 8 ROM board (printed circuit board) 9 first spacer 16 second spacer 17 ROM rewriting connector (connector) 18 concave notch 30, 40, 50, 60 insulating sheet 31, 41, 51, 61 Cut-and-raised portion 43 Second surface portion (wide portion) 52 First fold 53 First surface portion 54 Second surface portion 55 Second fold 62 Projection (engaging portion) a Width b Width of concave notch

Claims (7)

(57) [Claims] A printed circuit board to which a connector is attached; a base for fixing the printed circuit board via a support; a component or a wiring pattern on a surface of the printed circuit board; And a bent portion that covers the entirety of the printed circuit board, and an insulating sheet attached to the surface of the printed circuit board. 2. A printed circuit board having a concave notch formed in a peripheral portion thereof, and a connector mounted on a rear surface of the connector such that an insertion port side end edge thereof substantially coincides with a bottom of the concave notch. A base for fixing the printed circuit board via the first spacer, and a basic shape set to a size covering the entire surface including the concave cutout of the printed circuit board, and corresponding to the concave cutout of the printed circuit board. A cut-and-raised portion for covering the insertion opening of the connector is formed at a position where the connector is inserted, and an insulating sheet attached to the surface of the printed circuit board via a second spacer. machine. 3. The fire alarm system according to claim 2, wherein the width of the cut and raised portion of the insulating sheet is set to be equal to or slightly smaller than the width of the concave cutout of the printed circuit board. Equipment. 4. The device for fire alarm equipment according to claim 2, wherein the width of the cut-and-raised portion of the insulating sheet is set slightly larger than the width of the concave cutout of the printed circuit board. 5. A wide portion for engaging with a lower surface of an edge portion of a concave notch portion of a printed circuit board is formed at a leading end of a cut-and-raised portion of an insulating sheet. Fire alarm equipment described in Crab. 6. A cut-and-raised portion of the insulating sheet, a first fold set at the base end thereof to have the same width as the width of the concave cut-out portion of the printed circuit board, and a continuous fold from the first fold. A first surface portion having a small area, a second surface portion having a large area continuously formed from the first surface portion, and a boundary or a position before and after the boundary between the first and second surface portions. 3. A second fold comprising a set constricted portion, wherein the first fold is formed upward and the second fold is formed downward. Fire alarm equipment. 7. The base according to claim 1, wherein the base for fixing the printed circuit board is provided with an engaging portion to which a tip of a cut-and-raised portion of the insulating sheet can be engaged. The equipment for the fire alarm facility described.