JP3998881B2 - Recessed outlet - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an embedded outlet used by being embedded in a wall surface or the like.
[0002]
[Prior art]
An example of a conventional example of an embedded outlet will be described with reference to FIGS. The lower case 1 and the upper case 2 are connected to form an outlet case 3. The upper case 2 is formed with two plug blade insertion holes 4 into which plug blades (not shown) are inserted, and one earth terminal insertion hole 5 into which a plug ground terminal is inserted.
[0003]
The lower case 1 has two stopper blade receiving storage recesses 7 for storing one stopper blade receiver 6 and one earth terminal receiving storage recess (not shown) for storing an earth terminal receiver (not shown). ), An electric wire insertion hole 9 into which an electric wire 8 connected to the plug blade receiver 6 through a terminal portion and a leaf spring described later is inserted. The plug blade receiver 6 includes a pair of plug blade receiving side plates 10a and 10b that sandwich the plug blade inserted through the plug blade insertion hole 4, and a plug blade receiving bottom plate that connects one end side of these plug blade receiving side plates 10a and 10b. 11. When the plug blade receiver 6 is stored in the plug blade receiver storage recess 7, the distal ends of the pair of plug blade receiving side plates 10 a and 10 b in each plug blade receiver 6 face the plug blade insertion hole 4.
[0004]
A terminal portion 12 for connecting the plug blade receiver 6 and the electric wire 8 is integrally formed on the plug blade receiver 6. The terminal portion 12 is formed by bending a member that protrudes laterally from the plug blade receiving bottom plate 11 and is cut into a predetermined shape, and is a plate for sandwiching the electric wire 8 inserted from the electric wire insertion hole 9. A pair of wire pressing portions 14a and 14b to which the spring 13 is attached are provided in parallel and facing each other.
[0005]
[Problems to be solved by the invention]
The stopper blade receiver 6 housed in the stopper blade receiver storage recess 7 is in contact with the outer surface of the stopper blade receiver 6 and the inner peripheral surface of the stopper blade receiver storage recess 7 to position the storage position. For this reason, the heat generated in the plug blade receiver 6 during energization is easily transferred to the lower case 1 and the outlet case 3 may be deformed by the heat.
[0006]
Further, since the plug blade receiving bottom plate 11 and the plug blade receiving side plates 10a and 10b in the plug blade receiver 6 are in surface contact with the inner peripheral surface of the plug blade receiving storage recess 7, the bent portion when the plug blade receiver 6 is formed. If there is a variation in dimensions at the cutting location, the plug blade receiver 6 cannot be stored in the plug blade storage recess 7 or even if it can be stored, the plug blade receiver 6 is inclined and plugged. A situation occurs in which the blade receiving side plates 10a and 10b do not directly face the plug blade insertion hole 4.
[0007]
The electric wire 8 inserted into the outlet case 3 from the electric wire insertion hole 9 is sandwiched between the leaf spring 13 and the electric wire pressing portion 14a and is prevented from coming off. At this time, the pressing force of the plate spring 13 acts on the pair of wire pressing portions 14a and 14b and the electric wire 8, and the pressing force of the plate spring 13 has no influence on the plug blade receiving side plates 10a and 10b. Absent.
[0008]
An object of the present invention is to provide an embedded outlet that can prevent heat generated from a plug blade receiver from being transmitted to the outlet case when energized and prevent deformation of the outlet case due to heat.
[0009]
The present invention is capable of easily storing the plug blade receiver in the plug blade receiver storage recess even when the plug blade receiver has a variation in dimensions, and the pair of plug blade receiver side plates are connected to the plug blade insertion holes. An object of the present invention is to provide an embedded outlet that can be directly opposed to an object.
[0010]
The present invention uses a pressing force of a leaf spring used in the terminal portion to increase the holding force of the plug blade by the plug blade receiving side plate and stabilize the connection state of the plug to the embedded outlet. The purpose is to provide a built-in outlet.
[0011]
[Means for Solving the Problems]
[0015]
According to a first aspect of the present invention, there is provided an embedded type outlet in which a lower case and an upper case are connected, a plug blade insertion hole into which a plug blade of a plug is inserted is formed in the upper case, An outlet case having an insertion hole formed in the lower case; a pair of plug blade receiving side plates and a plug blade receiving bottom plate connecting one end side of these plug blade receiving side plates, And the other blade blade receiving side plate is held in contact with the lower case at a position opposite to the one blade blade receiving side plate in the plug blade receiving storage recess, A plug blade holder for holding the plug blade inserted in the outlet case between a pair of the plug blade receiving side plates; parallel to the one of the plug blade receiving side plates at a position opposite to the other plug blade receiving side plate ; cable pressing portion is provided opposite to the receiving the plug pins And formed in the body terminal portion; mounted between the said other plug blade receiving plate cable pressing portion, clamping the wire that is inserted into the outlet casing from the wire insertion hole by said cable pressing portion It is provided with; and a plate spring that applies a pressing force toward the other plug blade receiving plate to the one plug blade receiving plate by sandwiching the wire.
[0016]
Therefore, the plug blade holder is housed in the recess of the lower blade receiver of the lower case, the upper case is connected to the lower case, and the plug blade of the plug inserted from the plug blade insertion hole formed in the upper case is plugged. The plug is connected to the embedded outlet by being sandwiched between the receptacle blade receiving side plates of the receptacle.
[0017]
Here, a leaf spring is inserted between the wire retainer provided at the terminal portion for connecting the plug blade receiver and the electric wire and one of the blade blade side plates, and is inserted into the outlet case from the electric wire insertion hole. When the electric wire is sandwiched between the electric wire pressing portion and the leaf spring, the pressing force of the leaf spring acts on one of the blade edge receiving side plates, and the edge blade receiving side plate is pressed toward the other blade edge receiving side plate. Thereby, the holding force of the plug blade of the plug by the pair of plug blade receiving side plates is increased, the plug connected to the embedded outlet is difficult to be removed, and the connection state of the plug to the embedded outlet is stabilized.
[0019]
In addition, the plug blade receptacle and the terminal portion are one component, and the number of components constituting the embedded outlet is reduced. Furthermore, the terminal portion may be provided with one wire pressing portion that faces the plug blade receiving side plate in parallel, and the structure of the terminal portion is simplified.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a longitudinal front view showing an embedded outlet of the present invention. FIG. 2 is a plan view thereof. FIG. 3 is a plan view showing the internal structure of the embedded outlet by breaking a part of the upper cover. FIG. 4 is a perspective view showing a plug blade receiver in which a terminal portion is integrally formed.
[0021]
The lower case 15 and the upper case 16 are connected by a stopper or a fixing claw, and an outlet case 17 is formed. The upper case 16 is formed with two plug blade insertion holes 18 into which plug blades (not shown) are inserted, and one earth terminal insertion hole 19 into which a plug ground terminal is inserted.
[0022]
The lower case 15 has two stopper blade receiving storage recesses 21 each storing one stopper blade receiver 20, and one earth terminal receiving storage recess (not shown) in which an earth terminal receiver (not shown) is stored. ), An electric wire insertion hole 23 into which an electric wire 22 connected to the plug blade receiver 20 via a terminal portion and a leaf spring described later is inserted. The plug blade receiver 20 includes a pair of plug blade receiving side plates 24a and 24b that sandwich the plug blade inserted from the plug blade insertion hole 18, and a plug blade receiving bottom plate that connects one end side of these plug blade receiving side plates 24a and 24b. 25. When the plug blade receiver 20 is stored in the plug blade receiver storage recess 21, the distal ends of the pair of plug blade receiving side plates 24 a and 24 b in each plug blade receiver 20 face the plug blade insertion hole 18.
[0023]
A rib-like protrusion 26 is formed on the inner peripheral surface of the bottom surface of the stopper blade receiving / receiving recess 21 so as to be in contact with the outer surface of the stopper blade receiving bottom plate 25 of the stopper blade receiver 20 stored in the stopper blade receiving / receiving recess 21. ing. A rib-like protrusion 27 that abuts on the outer surface of the plug blade receiving side plate 24 b of the plug blade receiver 20 accommodated in the plug blade receiver accommodating recess 21 is formed on the inner peripheral surface of the side surface of the plug blade receiver accommodating recess 21. Is formed. Further, on the inner peripheral surface of the side surface portion of the blade receiving recess 21, a rib-like protrusion that comes into contact with the outer surface of the end of the blade receiving bottom plate 25 in the blade receiving 20 received in the plug receiving recess 21. 28 is formed. The rib-shaped protrusions 26 to 28 are brought into contact with the outer surface of the plug blade receiver 20 accommodated in the plug blade receiver storage recess 21, so that the outer surface of the plug blade receiver 20 and the inner peripheral surface of the plug blade receiver storage recess 21. A gap 29 is formed between them.
[0024]
The plug blade receiver 20 is integrally formed with a terminal portion 30 for connecting the plug blade receiver 20 and the electric wire 22. The terminal portion 30 is integrally formed with one of the blade blade receiving side plates 24a by bending, and an electric wire pressing portion 31 that is opposed to the blade blade receiving side plate 24a in parallel is formed at the distal end portion thereof.
[0025]
Between the plug blade receiving side plate 24a and the wire retainer 31, a leaf spring 32 for holding the wire 22 inserted into the outlet case 17 from the wire insertion hole 23 and the leaf spring 32 are pressed and bent. Accordingly, a release button 33 for releasing the holding state of the electric wire 22 by the leaf spring 32 is mounted. The electric wire 22 inserted into the outlet case 17 from the electric wire insertion hole 23 is inserted between the electric wire pressing portion 31 and the leaf spring 32 and is prevented from coming off by the pressing force of the leaf spring 32. When the electric wire 22 is sandwiched between the leaf spring 32 and the body spring pressing portion 31, the pressing force of the leaf spring 32 also acts on the blade receiving side plate 24a, and the blade receiving side plate 24a faces the other blade receiving side plate 24b. Pressed. At this time, the outer surface of the wire retainer 31 is in contact with the inner peripheral surface of the lower case 15, and the wire retainer 31 is prevented from spreading in a direction away from the plug blade receiving side plate 24a.
[0026]
In such a configuration, the plug blade receiver 20 is stored in the two plug blade receiver storage recesses 21 of the lower case 15 together with the leaf spring 32 and the release button 33, and the ground terminal is connected to the leaf spring ( An embedded outlet is formed by housing together with a lower button 15 and a release button (not shown) and connecting the upper case 16 to the lower case 15. In such an embedded outlet, the electric wire 22 is inserted from the electric wire insertion hole 23 of the lower case 15, and the electric wire 22 is sandwiched between the leaf spring 32 and the electric wire pressing portion 31 to be prevented from coming off.
[0027]
Here, the plug blade receiver 20 accommodated in the plug blade receiver storage recess 21 has rib-shaped projections 26 to 28 in contact with the outer surface thereof, and the outer surface of the plug blade receiver 20 and the inner periphery of the plug blade receiver storage recess 21. A gap 29 is formed between the surface. For this reason, even when heat is generated from the plug blade receptacle 20 when the plug is connected to the embedded outlet and energized, the heat can be radiated out of the outlet case 17 through the gap 29. For this reason, the heat generated in the plug blade receiver 20 during energization becomes difficult to be transmitted to the outlet case 17, and deformation of the outlet case 17 due to heat can be prevented.
[0028]
Further, rib-shaped protrusions 26 to 28 formed on the inner peripheral surface of the plug blade receiving storage recess 21 are brought into contact with the outer surface of the blade receiving 20, so that the outer surface of the plug blade receiving 20 and the inside of the plug blade receiving storage recess 21 are contacted. There is no surface contact with the peripheral surface. For this reason, even when the plug blade receiver 20 to be stored in the plug blade receiver storage recess 21 has a dimensional variation at a bent part or a cut part, the plug blade receiver 20 is inserted into the plug blade receiver storage recess 21. Can be easily stored. In addition, the storage direction of the plug blade receiver 20 can be easily adjusted so that the pair of plug blade receiving side plates 24a and 24b face the plug blade insertion hole 18 straightly. This improves the operability of the plug attaching / detaching operation.
[0029]
Next, in order to connect the plug blade receiver 20 and the electric wire 22, the electric wire 22 is inserted into the outlet case 17 from the electric wire insertion hole 23, and when the electric wire 22 is sandwiched between the leaf spring 32 and the electric wire holding portion 31, The pressing force of the leaf spring 32 acts on one plug blade receiving side plate 24a, and this plug blade receiving side plate 24a is pressed toward the other plug blade receiving side plate 24b. As a result, the distance between the pair of plug blade receiving side plates 24a, 24b is reduced, the plug blade holding force of the plug blade receiving side plates 24a, 24b is increased, and the plug connected to the embedded outlet is connected. It becomes difficult to pull out, and the connection state of the plug to the embedded outlet is stabilized.
[0030]
Since the terminal portion 30 is formed integrally with one of the plug blade receiving side plates 24a by bending, the plug blade receiver 20 and the terminal portion 30 can be formed as one component, and the components constituting the embedded outlet The score can be reduced. Furthermore, the terminal portion 30 may be formed by bending one wire pressing portion 31 facing the plug blade receiving side plate 24a in parallel, and the structure of the terminal portion 30 is simplified.
[0031]
【The invention's effect】
[0032]
According to the embedded type outlet of the invention described in claim 1 , when the electric wire inserted into the outlet case from the electric wire insertion hole is sandwiched between the electric wire holding portion provided in the terminal portion and the flat spring, A leaf spring is mounted so that the pressing force acts on one of the blade blade receiving side plates, and the blade blade receiving side plate is pressed against the other blade receiving side plate. The pinching force of the plug blade can be increased, thereby making it difficult for the plug connected to the embedded outlet to come off, and the connection state of the plug to the embedded outlet can be stabilized.
[0033]
Further, since the terminal portion is formed integrally with one of the plug blade receiving side plates, the plug blade receiver and the terminal portion become one component, and the number of components constituting the embedded outlet can be reduced. Furthermore, since it is sufficient to provide the terminal portion with one wire pressing portion that faces the plug blade receiving side plate in parallel, the structure of the terminal portion can be simplified.
[Brief description of the drawings]
FIG. 1 is a longitudinal front view showing an embedded outlet according to an embodiment of the present invention.
FIG. 2 is a plan view thereof.
FIG. 3 is a plan view showing the internal structure of the embedded outlet by breaking a part of the upper cover.
FIG. 4 is a perspective view showing a plug blade receiver in which a terminal portion is integrally formed.
FIG. 5 is a longitudinal sectional front view showing a conventional embedded outlet.
FIG. 6 is a plan view showing the internal structure of the embedded outlet by partially breaking the upper cover.
[Explanation of symbols]
15: Lower case 16: Upper case 17: Outlet case 18: Plug blade insertion hole 20: Plug blade receiving 21: Plug blade receiving storage recess 23: Electric wire insertion holes 24a and 24b: Plug blade receiving side plate 25: Plug blade receiving bottom plate 26 ˜28: rib-like protrusion 29: gap 30: terminal part 31: wire holding part 32: leaf spring

Claims (1)

An outlet case in which a lower case and an upper case are connected, a plug blade insertion hole into which a plug blade of a plug is inserted is formed in the upper case, and a plug blade receiving storage recess and a wire insertion hole are formed in the lower case When;
A pair of plug blade receiving side plates and a plug blade receiving bottom plate connecting one end sides of these plug blade receiving side plates are stored in the plug blade receiving storage recess, The other plug blade receiving side plate is held in contact with the lower case at a position opposite to the plug blade receiving side plate, and the plug blade inserted into the outlet case from the plug blade insertion hole is connected to the pair of plugs. A stopper blade holder sandwiched between blade receiving side plates;
A terminal portion formed integrally with the plug blade receiver, provided with an electric wire pressing portion facing in parallel with the one of the blade edge receiving side plates at a position opposite to the other blade edge receiving side plate;
By mounting the electric wire inserted between the other plug blade receiving side plate and the electric wire holding portion and inserted into the outlet case from the electric wire insertion hole by the electric wire holding portion, and by holding the electric wire a plate spring for applying a pressing force toward the other of the plug blade receiving plate wherein one of the plug blade receiving plate;
An embedded outlet characterized by comprising.

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