JPH1013064A - Fixing structure of electronic component - Google Patents

Abstract

PROBLEM TO BE SOLVED: To close a communication port by using an existing electronic component without raising the cost by providing a closing member which closes a communication port which communicates the inside and the outside of a protection cover. SOLUTION: A closing part 10 which extends from a device cover 1 integrally and closes a communication port 32 provided in a protection cover 30 of an electronic component 3 is provided. Thereby, it is possible to close the communication port 32 without improving an existing manufacturing process and to prevent a small living thing such as an ant from entering and a foreign matter such as ducts from being included. That is, in an electronic component 3 wherein a contact such as a relay switches a contact point, there is no possibility that power is not supplied to a plane whereto power is to be supplied essentially owing to nesting of a small living thing such as an ant in a contact and near a contact point or inclusion of a foreign matter such as dust.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting electronic parts such as relays.

[0002]

2. Description of the Related Art Conventionally, an electronic component such as a relay having a protective cover and a communication port for communicating the inside and the outside of the electronic component at an appropriate portion of the protective cover is provided inside various devices. Mounted on a circuit board. The communication port is provided for discharging the gas inside the protective cover to the outside when the temperature of the electronic component rises and the volume of the gas in the electronic component expands.

However, a small creature such as an ant may enter the communication part provided in the protective cover and form a nest inside the electronic component, or foreign matter such as dust or dust may be mixed. There is. In particular, in the case of electronic components such as relays whose contacts open and close contacts, small creatures such as ants can form nests near the contacts and contacts, or foreign matter such as dust or dirt gets mixed in. Then, opening and closing of the contact cannot be performed, and power cannot be supplied to a place where power should be originally supplied.

In order to prevent invasion of small creatures such as ants and entry of foreign matter such as dust and dirt into the electronic components, use of sealed electronic components using a protective cover having no communication port is required. It is considered.

[0005]

However, hermetically sealed electronic components having no protective opening in the protective cover are more expensive than electronic components in which the protective cover has a communicating opening. That is, when the communication port is closed with a resin or the like, it takes time and effort, which leads to an increase in cost. In addition, since it is a closed type, it is necessary to perform a test for examining the sealing property, which is troublesome and leads to an increase in cost. Also,
Although it is considered that the diameter of the communication port is made smaller than the current diameter to prevent invasion of small creatures such as ants, it is difficult to accurately form a communication port having a diameter smaller than the current diameter.

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above points, and it is possible to close a communication port provided in a protective cover of an electronic component by using existing electronic components without increasing costs. It is an object of the present invention to provide an electronic component mounting structure.

[0007]

In order to achieve the above object, an electronic component mounting structure according to the first aspect of the present invention protects a circuit board on which an electronic component is mounted, and the circuit board and other components. And a mounting structure of an electronic component in a device provided with a device cover forming an outer shell of the device, wherein the electronic component has a protective cover, and the protective cover has A communication port for communicating with the outside is provided, and a closing member for closing the communication port is provided.

According to the mounting structure of the electronic component, the communication port can be closed without improving the existing manufacturing process, and the invasion of small creatures such as ants and the entry of dust and foreign matter of dust can be prevented. You can. In other words, in electronic components where contacts such as relays open and close contacts, nests are created by small creatures such as ants near the contacts and contacts, and dust and foreign matter such as dust are mixed in. There is no possibility that power cannot be supplied to a place where power should be supplied.

The structure for mounting an electronic component according to the present invention is applicable to all devices that use an electronic component having a communication port provided in a protective cover for the electronic component.

According to a second aspect of the present invention, there is provided the electronic component mounting structure according to the first aspect, wherein at least a portion of the closing member that contacts the electronic component is elastic. Is formed of a member having

In the electronic component mounting structure according to the present invention, at least a portion of the closing member that contacts the communication port is formed of a member having elasticity, so that the degree of adhesion between the communication port and the closing member is reduced. The communication port can be closed more surely.

The elastic member may be a foam, a so-called sponge, or the like.

Further, the electronic component mounting structure according to the third aspect of the present invention is the electronic component mounting structure according to the first or second aspect, wherein the closing member is provided on a circuit board or the device cover. It is characterized by being carried out.

According to such an electronic component mounting structure, it is not necessary to provide a step of closing the communication port provided in the electronic component with a closing member when assembling the apparatus.

According to a fourth aspect of the present invention, there is provided an electronic component mounting structure according to the first or second aspect, wherein the closing member is integrated with a circuit board or the device cover. It is characterized by being provided so as to extend in a horizontal direction.

According to such an electronic component mounting structure, when the closing member is provided on the apparatus cover, a predetermined mold is formed and a resin is injected into the mold to close the closing member. The member can be integrally formed with the device cover. That is, although the cost of forming the mold is increased, the communication port provided in the protective cover of the electronic component can be closed at a lower cost as the number of manufactured components increases as compared with the use of the sealed electronic component.

Further, an electronic component mounting structure according to a fifth aspect of the present invention is the electronic component mounting structure according to any one of the first to fourth aspects, wherein the electronic component is a relay. is there.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be specifically described below with reference to the drawings.

FIG. 1 is a sectional view of an essential part showing an embodiment of an electronic component mounting structure according to the present invention. The mounting structure of the electronic component according to the present invention includes a communication port 32 integrally extending from the device cover 1 and provided in the protective cover 30 of the electronic component 3.
Is provided with a closing portion 10 for closing the opening.

As shown in FIG. 2, the electronic component 3, such as a relay, has a protective cover 30 made of resin or the like for protecting the inside thereof. A communication port 32 for communication between the inside and the outside is formed, and a circular notch 33 is formed above the communication port 32.
Are formed. Further, from the bottom of the electronic component 3, a lead terminal 31 for mounting on the circuit board 2 and energizing the electronic component 3 is provided.

A circuit board 2 is provided on the inner surface of the device cover 1.
At a position corresponding to the communication port of the electronic component 3 mounted on the electronic component 3, a closing portion 10 for closing a communication port 32 formed in the protective cover 30 of the electronic component 3 is provided. The device cover 1 thus configured protects the electronic components 3 and other components mounted on the circuit board 2 and forms an outer shell of the device in the attached state. The device cover 1 is integrally formed of resin or the like using a mold. In the facsimile apparatus, the device cover 1 includes a main body and an opening / closing lid, and the closing portion 10 is provided on the opening / closing lid.
The closing portion 10 is connected to the protective cover 30 by a communication port 32.
Needless to say, it is sufficient to provide the electronic component 3 at a position corresponding to the communication port 32 of the electronic component 3 in which the electronic component 3 is formed.

As shown in FIGS. 3 and 4, the closing portion 10 extends from the inner surface of the device cover 1 and is formed in a plate shape. The closing portion 10 has a width larger than the diameter of the notch 33 so that the communication port 32 and the notch 33 can be properly closed, and a contact portion with the electronic component 3 is formed flat. Further, since the closing portion 10 is formed in a plate shape using a resin or the like, as shown by a broken line in FIG. 3, the closing portion 10 is formed in a height direction of the electronic component 3 mounted on the circuit board 2. Bendable.

When the device cover 1 is mounted, the tip of the thus formed closing portion 10 is bent in the height direction of the electronic component 3 as shown by a broken line in FIG. Then, as shown in FIGS. 1 and 4,
Due to the elastic force of the closing portion 10 itself, a flat contact portion on the lower surface of the distal end portion presses the vicinity of the communication port 32 and the notch 33, and a good closed state of the communication port 32 and the notch 33 can be realized.

In such an electronic component mounting structure, the closing member can be integrally formed with the apparatus cover by forming a predetermined mold and injecting a resin into the mold. Although the formation cost is high, the communication port provided in the protective cover for the electronic component can be closed at a lower cost as the number of manufactured electronic components increases as compared with the use of the sealed electronic component.

Further, since the present invention closes the communication port 32 provided in the protective cover 30 of the electronic component 3, it is possible to prevent invasion of small creatures such as ants and entry of foreign matter. In other words, in electronic components where contacts such as relays open and close contacts, nests are not created by small creatures such as ants near the contacts and contacts, and foreign matter is not mixed in. There is no loss of power where it should be.

In this embodiment, as shown in FIG. 5, a member made of a material that allows only the foam 4, for example, sponge or gas, to pass through the portion of the back surface of the tip portion of the closing portion 10 that contacts the electronic component 3. By attaching such components, it is possible to realize a better closed state of the communication port 32 and the notch 33 of the electronic component 3.

Further, in the present embodiment, the closing portion 10 is provided so as to extend integrally from the device cover 1, but the closing portion 10 may be mounted on the device cover. The communication port 32 may be formed so as to extend from or be attached to the circuit board 2 so that the communication port 32 can be closed.

In an apparatus in which the circuit boards 2 are stacked up and down in a plurality of stages, the circuit boards other than the uppermost stage are separated from the circuit board of the next upper stage. The closing member may be extended, or the closing member may be attached to the circuit board of the next higher stage to close the communication port provided in the electronic component.

[0029]

As described above, according to the electronic component mounting structure according to the first aspect of the present invention, the communication port can be closed without improving the existing manufacturing process, and the ants and the like can be closed. It is possible to prevent the invasion of small organisms and the incorporation of dust and foreign matter. In other words, in electronic components where contacts such as relays open and close contacts, nests are created by small creatures such as ants near the contacts and contacts, and dust and foreign matter such as dust are mixed in. There is no possibility that power cannot be supplied to a place where power should be supplied.

According to the electronic component mounting structure of the present invention, at least a portion of the closing member that contacts the communication port is formed by a member having elasticity. The degree of close contact with the closing member is significantly increased, and the communication port can be closed more reliably.

Further, according to the electronic component mounting structure of the present invention, it is not necessary to provide a step of closing the communication port provided in the electronic component with a closing member when assembling the device. .

According to the electronic component mounting structure of the present invention, when the closing member is provided on the apparatus cover, a predetermined mold is formed, and the resin is attached to the mold. , The closing member can be formed integrally with the device cover. That is, although the cost of forming the mold is increased, the communication port provided in the protective cover of the electronic component can be closed at a lower cost as the number of manufactured components increases as compared with the use of the sealed electronic component.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a main part of an embodiment of an electronic component mounting structure according to the present invention.

FIG. 2 is an example of an electronic component in which a communication port is provided in a protective cover.

FIG. 3 is an explanatory diagram of a closing member provided on an apparatus cover.

FIG. 4 is an enlarged view of a cross section taken along line IV-IV in FIG.

FIG. 5 is a modified example of the closing member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Device cover 2 Circuit board 3 Electronic component 4 Foam body 10 Closure member 30 Protective cover 31 Lead terminal 32 Communication port 33 Notch

Claims (5)

[Claims] 1. A mounting structure for an electronic component in a device having a circuit board on which the electronic component is mounted, and a device cover provided to protect the circuit board and other components and forming an outer shell of the device. The electronic component has a protection cover, the protection cover is provided with a communication port for communicating the inside with the outside, and a closing member for closing the communication port is provided. A mounting structure for electronic components, characterized in that: 2. The electronic component mounting structure according to claim 1, wherein the closing member is formed of a member having elasticity at least at a portion in contact with the electronic component. 3. The electronic component mounting structure according to claim 1, wherein the closing member is provided on the circuit board or the device cover. 4. The electronic component mounting structure according to claim 1, wherein the closing member is provided so as to extend integrally with the circuit board or the device cover. 5. The mounting structure for an electronic component according to claim 1, wherein said electronic component is a relay.