JP2015035314A - Electric device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric device which makes a gap part less likely to be formed between joint surfaces of a housing and a terminal base when the terminal base is assembled into the housing.SOLUTION: An electric device X includes: a housing 10; and a terminal board 20 in which a housing groove 22 for housing a part of a power source terminal 21 erected from a rear surface of the housing 10 is formed, the terminal base 20 assembled to an opening part 11 formed in the housing 10. The power source terminal 21 is inserted into an insertion port 31 of an electrical outlet 30 on a wall surface Y thereby arranging the electric device X on the wall surface Y. The terminal base 20 is formed by a material softer than the housing 10.

Description

  The present invention relates to an electric device in which power supply terminals are integrally formed.

  Conventionally, in electrical equipment, a power supply terminal erected from the back of the housing, a terminal base formed in an opening formed in the housing, in which a housing groove for housing a part of the power supply terminal is formed, The one with was known. The electric device is arranged on the wall surface by inserting the power supply terminal into an outlet of a wall socket.

  Such an electrical device has an excellent aesthetic appearance because the power cord drawn out from the casing is not exposed on the wall surface.

  In addition, since the above-mentioned electrical equipment which is a prior art in the present invention is a general technique, prior art documents such as patent documents are not shown.

  In the electrical equipment described above, the casing and the terminal base are made of a resin having excellent hardness, such as ABS resin. In this case, when the terminal base is incorporated into the opening of the housing and the hard housing and the terminal base are difficult to elastically deform each other, a slight gap is formed on the joint surface of the housing and the terminal base. There was a risk of formation. If such a gap is formed, water or foreign matter may enter the inside of the electric device, which may cause the electric device to fail.

  Accordingly, an object of the present invention is to provide an electrical device in which a gap portion is not easily formed on the joint surface between the housing and the terminal base when the terminal base is incorporated into the housing.

  In order to achieve the above object, an electrical device according to the present invention includes a housing and a housing groove that houses a part of a power supply terminal erected from the back surface of the housing, and an opening formed in the housing. A terminal base incorporated in the unit, and an electrical device disposed on the wall surface by inserting the power supply terminal into an outlet of the wall surface, the first characteristic configuration is The terminal base is formed of a softer material than the casing.

  According to this configuration, when the terminal base is incorporated in the opening formed in the housing, the soft terminal base is easily elastically deformed according to the shape of the opening, and the deformed terminal base Is in close contact with the opening, and it is difficult to form a gap on the joint surface between the housing and the terminal base. For this reason, it is difficult for water and foreign matter to enter the interior of the electrical device without interposing a sealing material or the like on the joint surface between the housing and the terminal base, and it is possible to prevent the electrical device from being damaged due to such penetration.

  According to a second characteristic configuration of the electrical apparatus according to the present invention, the terminal base includes a crushing portion that is crushed by elastic deformation of the terminal base when the terminal base is incorporated into the opening of the housing. In the point.

  According to this configuration, even if there is a manufacturing error in the terminal base, the terminal base can be surely arranged at a predetermined position of the casing by being crushed and elastically deformed.

It is a perspective view which shows the outline | summary of the electric equipment of this invention. It is a disassembled perspective view of an electric equipment. It is the schematic of the top view of the electric equipment which removed the substrate circuit. It is the schematic of the top view of the electric equipment with which the board | substrate circuit was mounted | worn. It is principal part sectional drawing of the electric equipment arrange | positioned on the wall surface.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The electric device of the present invention is an electric device in which power supply terminals are integrally formed.
As shown in FIGS. 1 to 5, the electric device X of the present invention is formed with a housing 10 and a housing groove 22 for housing a part of a power terminal 21 erected from the back surface of the housing 10. A terminal base 20 incorporated in the opening 11 formed in 10, and is disposed on the wall surface Y by inserting the power supply terminal 21 into the insertion port 31 of the outlet 30 on the wall surface Y. Reference numeral 20 denotes a material softer than the housing 10.

  The electric device X may be any device as long as the power terminal is integrally formed and installed on the wall surface. As an electric equipment installed in the said wall surface, the alarm device for disaster prevention or crime prevention is mentioned, for example. This embodiment demonstrates the aspect which installs the gas alarm which detects the leak of combustible gas (LP gas) as the electric equipment X on the indoor wall surface. The shape of the electric device X is not particularly limited, but in the present embodiment, a rectangular shape in a top view and a thick plate shape (for example, 80 × 62 × 35 mm) is exemplified.

The housing 10 is formed of a device main body 10a and a sealing body 10b that covers the device main body 10a. A circuit board 12 is accommodated in the device body 10.
Electronic components such as a gas detection unit 13 and a notification unit 14 are disposed on the circuit board 12. Further, one end of the power cord 23 is connected to the connection portion 12 a of the circuit board 12. The other end of the power cord 23 is connected to the terminal base 20. The circuit board 12 of the present embodiment has a notch 12b in order to dispose the power cord 23 across the front and back of the circuit board 12. The power cord 23 guided along the side surface 18 of the housing 10 is bent along a corner rib 45 formed in the vicinity of the corner portion 19 of the housing 10 from the back side of the circuit substrate 12, so that the front side of the circuit board 12. Be guided to.

  The gas detector 13 may be of any form as long as it detects a combustible gas (LP gas) that is a gas to be detected. For example, a known semiconductor sensor element or a contact combustion sensor element may be used. The provided one can be used.

  The notification unit 14 may be in any form as long as it receives a signal from the gas detection unit and issues an alarm. For example, the notification unit 14 emits sound such as a piezoelectric speaker, or emits light such as an LED. Etc. can be used.

  The sealing body 10b is formed with a switch portion 15 for turning on the electric device X, a sound emitting portion 16 for emitting an alarm sound from the notification portion 14, and the like.

  In the present embodiment, a case where a pair of power supply terminals 21 facing each other is erected on the terminal base 20 will be described, but the present invention is not limited to such a mode. One end of the power supply terminal 21 is engaged with the receiving groove 22 formed in the terminal base 20 by, for example, integral molding, and the other end is exposed. The exposed other end of the power terminal 21 is inserted into the insertion port 31 of the wall socket Y on the wall surface Y.

  The terminal base 20 is incorporated in the opening 11 formed in the housing 10. In the present embodiment, the case where the opening 11 is provided so as to be positioned at the center in the width direction and at the upper side in the vertical direction in the apparatus main body 10a will be described. However, the present invention is not limited to such an embodiment. Absent.

  Further, the terminal base 20 is formed of a material softer than the housing 10.

  The terminal base 20 is not particularly limited as long as it is a softer material than the housing 10. Examples of the terminal base 20 include soft vinyl chloride resin, rubber such as EPDM and ethylene-propylene, and various thermoplastic elastomers such as urethane, olefin, and styrene. Moreover, it is good also as a soft vinyl chloride-type resin composition which mix | blended the plasticizer with the polyvinyl chloride-type resin.

  The housing 10 is not particularly limited as long as it is a material harder than the terminal base 20. Examples of the housing 10 include ABS resin, polycarbonate, nylon 11, nylon 12, acrylic resin, polyamide resin, polyethylene resin, polyphenylene sulfide resin, polybutylene terephthalate resin, and methacrylic resin.

  As described above, if the terminal base 20 is formed of a softer material than the housing 10, the terminal base 20 is a soft terminal base when incorporated in the opening 11 formed in the housing 10. The base 20 is easily elastically deformed according to the shape of the opening 11, and a gap portion is hardly formed on the joint surface between the housing 10 and the terminal base 20. Therefore, it is difficult for water and foreign matter to enter the interior of the electrical device without interposing a sealing material or the like on the joint surface of the housing 10 and the terminal base 20, and the electrical device is prevented from being damaged due to these intrusions. it can.

  Further, although the terminal base 20 is fixed to the housing 10 with screws 26 or the like, even if the screws 26 are tightened with an excessive force, the soft terminal base 20 is elastically deformed and thus It is possible to prevent the terminal base 20 from being damaged by absorbing an excessive tightening force.

  In this configuration, the housing 10 is formed of a material harder than the terminal base 20, but this is because the housing 10 is formed of a material harder than the terminal base 20. This is because it is easy to maintain the outer shape of the.

  The terminal base 20 has an inner portion 24 that is not exposed to the outside when incorporated in the opening 11. The housing 10 is formed with a positioning portion 17 for positioning the terminal base 20. The positioning portion 17 abuts on a substantially L-shaped recess 25 of the inner portion 24 of the terminal base 20. Accordingly, in the positioning portion 17 and the recessed portion 25, when the terminal base 20 is assembled in the opening 11 of the housing 10, the positioning portion 17 and the recessed portion 25 come into contact with each other, and the recessed portion 25 (terminal base 25) that is soft. The base 20) is elastically deformed according to the shape of the positioning portion 17. That is, the recessed portion 25 that is crushed by elastic deformation becomes a crushed portion. As described above, the terminal base 20 is provided with the recessed portion (crushed portion) 25 that is elastically deformed and crushed, so that even if there is a manufacturing error in the terminal base 20, the crushed portion 25 is crushed and elastically deformed. The terminal base 20 can be reliably arranged at a predetermined position of the housing 10.

  The present invention includes a housing and a terminal base that is formed with a housing groove for housing a part of a power supply terminal erected from the back surface of the housing and is incorporated in an opening formed in the housing. The power terminal can be used for an electric device disposed on the wall surface by inserting the power terminal into a wall outlet.

X Electrical equipment Y Wall surface 10 Housing 11 Opening portion 20 Terminal base 21 Power supply terminal 22 Housing groove 25 Crushing portion 30 Outlet 31 Insertion port

Claims (2)

A housing and a terminal base formed in an opening formed in the housing, in which a housing groove for housing a part of a power terminal standing from the back surface of the housing is formed, and the power source An electrical device disposed on the wall surface by inserting a terminal into a wall outlet,
The terminal base is an electrical device formed of a softer material than the casing.   The electric device according to claim 1, wherein the terminal base includes a crushing portion that is crushed by elastic deformation of the terminal base when the terminal base is incorporated into the opening of the housing.

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