JP3627508B2 - Outlet with door - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an outlet with a door that is compatible with both a round pin type blade and a flat type blade, and includes a door that normally closes a blade insertion hole.
[0002]
[Prior art]
There is an outlet called a universal outlet that supports both a round pin type blade and a flat type blade. In this type of outlet, a plug blade insertion hole for a round plug blade and a plug blade insertion hole for a flat plug blade are connected to form one plug blade insertion hole.
[0003]
[Problems to be solved by the invention]
In this case, since the opening area of the plug blade insertion hole is large, there is a high possibility that a conductive foreign matter is inserted to cause an electric shock accident.
The present invention has been made in view of these points, and the object of the present invention is to support both round pin type blades and flat type blades, and there is no risk of electric shock. To provide an outlet with a door.
[0004]
[Means for Solving the Problems]
Therefore, the present invention includes a blade receiving portion that receives a round pin type blade, a blade receiving portion that receives a flat type blade, and a quick connection terminal that mechanically and electrically connects an electric wire inserted from the outside. The embedded wiring device is internally provided in a case formed as a standardized single module size, and a pair of doors for opening and closing the plug blade insertion holes formed in the case are provided in the case. An inner frame is mounted in a case made up of a cover and a body having a plug blade insertion hole, and the door is disposed in a space between the inner frame and the inner surface of the cover. Each of the doors having a pair of wing pieces to be slidably opposed to each other has a bar-like piece protruding toward the other door side, and the bar-like piece long in the sliding direction is on the middle frame The pair of plug blade insertion holes formed in the case and the above The door with the wing piece positioned between the receiving part is formed with the surface of the wing piece on the side of the insertion hole as an inclined surface, and slides against the spring bias by the pressing of the inclined surface by the plug blade. It is characterized by opening the insertion hole . An electric shock can be prevented by the door.
[0005]
The door has wing pieces projecting on both sides located directly below the pair of plug blade insertion holes, and is swingable around the middle of both wing pieces. It is preferable that a stopper for preventing the opening operation of the tilted door is provided.
Moreover, it is preferable that the door is provided with a reinforcing rib in the vicinity of the contact portion of the flat type plug blade.
[0006]
It is preferable to provide an abnormal opening preventing portion for preventing abnormal opening of the blade receiving portion in the case.
Furthermore, the middle frame may be provided with an engaging portion with the cover .
[0007]
The middle frame and the body are provided with a partition portion for partitioning between the pair of blade receiving portions corresponding to the pair of plug blades, and the partition portion of the middle frame and the partition portion of the body are provided with mutual engaging portions. It is preferable.
The two doors should be the same shape and size.
[0008]
Both doors are preferably urged in a direction to close each other by a spring disposed between each outer surface and the inner wall surface of the cover, and the stopper blade contact surface is formed as an inclined surface so that the stopper blade contacts the door. It is also preferable that the door that slides in contact is provided with a fall prevention portion that protrudes in the direction opposite to the sliding direction.
It is also preferable that both doors have an overlapping part that overlaps each other, or a temporary fixing latch part of the spring. When the spring is a coil spring, the door has a hole through which the boss protrudes to the spring mounting part. It is preferable that it is provided.
[0009]
The cover preferably has a pair of door positioning means on its inner surface .
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings. The illustrated outlet is formed as an embedded wiring device attached to a wiring box 53 via a mounting frame 50, for example, as shown in FIG. Therefore, it is the size of a standardized single module in this type of embedded wiring apparatus.
[0011]
The case 1 constituting the outer shell of the outlet is formed of a body 10 that is open on one side and a cover 11 that is attached to the opening side of the body 10. The interior of the body 10 is divided into two storage portions 13 and 13 by a partition wall 12, and each storage portion 13 has a release button 29, two lock springs 26 and 26, and a blade receiving spring 2. Each one is housed.
[0012]
The blade receiving spring 2 is made of an electrically conductive metal material having elasticity, and the blade receiving portion 20 for a round pin type blade with a pair of elastic pieces 22, 22 facing each other, and the elastic pieces 22, 22. And a blade receiving portion 21 for a flat type plug blade comprising a side edge on one side and an elastic piece 23 opposed to the side edge, and a fast-coupling terminal is constituted by the lock springs 26 and 26. A terminal plate portion 25 is provided, and the quick-connect terminal is connected by inserting the tip of the wire covering hole formed on the back side of the body from which the wire is stripped. The release button 29 is for releasing this connection. By inserting the tip of a screwdriver or the like through the release hole 19 opened on the back of the body 10, the release button 29 is moved to move the lock spring 26. By bending, it is possible to release the connection by loosening the pressing of the electric wire against the terminal plate portion 25 by the edge of the lock spring 26 and pulling out the electric wire.
[0013]
The cover 11 attached to the opening surface side of the body 10 includes a pair of terminal insertion holes 14 and 14 on the surface thereof. Each terminal insertion hole 14 is formed by integrating a round pin type blade insertion hole 14a and a flat type blade insertion hole 14b, and a pair of insertion holes 14a and 14a are inserted inside the pair insertion holes 14a and 14a. The holes 14b and 14b are located.
Inside the cover 11, a pair of doors 4, 4, a pair of springs 5, 5 and an inner frame 3 are housed. The middle frame 3 includes a pair of through-holes 31, 31, a groove 30 positioned between the through-holes 31, 31, and protrusions 32 and 32 positioned on both sides of each through-hole 31. As shown in FIG. 8, the cover 11 can be temporarily fixed to the cover 11 by engagement with the projection 17 provided on the inner wall of the cover 11. The pair of doors 4, 4 and the pair of springs 5, 5 are disposed between the inner frame 3 and the inner surface of the cover 11.
[0014]
The pair of doors 4 formed in the same shape is provided with wing pieces 41 and 42 projecting on both sides and a rod-like piece 40 projecting to the other door 4 side. It is provided at a position close to the wing piece 41 side. When the doors 4 and 4 are combined with each other facing each other, the rod-like pieces 40 and 40 are arranged side by side and are slidable with respect to each other. Moreover, the upper surface of each blade piece 41 and 42 is formed as the inclined surface 43 in which the other door 4 side becomes low.
[0015]
Condition The door 4, 4, which together with the rod-shaped piece 40, 40 is accommodated in the groove 30 of the middle frame 3, spring 5,5 is a coil spring disposed between the inner wall of the outer surface and the cover 11 Thus, the doors 4 and 4 are brought into contact with each other by urging by the springs 5 and 5.
The cover 11 in which the middle frame 3 and the doors 4 and 4 are housed is attached to the body 10 by metal assembly frames 6 and 6, but the front end of the assembly frame 6 that covers the cover 11 is engaged with the outer surface of the body 10. When assembled by stopping, as shown in FIG. 8, the blade receiving portions 20 and 21 of the blade receiving spring 2 are positioned in the through hole 31 of the intermediate frame 3, and the intermediate frame 3 is the partition in the body 10. Engage with the wall 12 to separate the two-blade receiving springs 2 and 8, and prevent a short circuit from occurring due to the swarf generated by opening and closing the plug. Further, the blade receiving portions 20 and 21 are positioned inside the through hole 31 to prevent the blade receiving spring 2 from being abnormally opened. Reference numeral 35 in FIG. 8 denotes an abnormal opening preventing portion for the blade receiving portion 21. The doors 4 and 4 are located between the insertion hole 14 of the cover 11 and the blade receiving spring 2.
[0016]
That is, the wing piece 41 of one door 4 is slightly covered with the wing piece 42 of the other door 4 so that no gap is generated between the doors 4 and 4, and the doors 4 and 4 are moved by the springs 5 and 5. The doors 4 and 4 closed in this manner are located between the insertion hole 14 and the blade receiving spring 2 and are located behind the insertion hole 14 as shown in FIG. The blade receiving spring 2 is hidden.
[0017]
Here, the positioning rib 18 protrudes from the inner surface of the cover 11 as shown in FIG. 7, and the door 4 biased by the spring 5 abuts the abutting surface 46 shown in FIG. By doing so, the doors 4 and 4 are positioned in a closed state.
In this state, if the plug blades of the plug are inserted into the two insertion holes 14, each plug blade moves the door 4 against the spring 5 by pushing the inclined surfaces 43 of the blades 41, 42 of the doors 4, 4. Thus, the gap between the doors 4 and 4 is widened. For this purpose, the plug blade reaches the blade receiving spring 2, and if the plug blade is of a round pin type, the blade receiving portion 20 has a flat type. If it is a thing, it will be inserted in the blade receiving part 21. When the plug is removed, the doors 4 and 4 return to the state of being biased by the springs 5 and 5 to close the insertion hole 14 again.
[0018]
And in this outlet with a door, when a pair of plug blades in the plug are not inserted at the same time, that is, as shown in FIG. 9, when only one of the plug blades 70 is inserted, the doors 4 and 4 are not opened. The state where only the plug blade 70 is inserted into the blade receiving spring 2 does not occur. That is, when only one plug blade 70 is inserted, the doors 4 and 4 are pushed by the plug blade 70 around the rod-shaped pieces 40 and 40 received by the groove 30 of the inner frame 3 as shown in FIG. As shown in FIGS. 9 and 10, the blade pieces 41 and 42 enter between the protrusions 32 and 32 of the middle frame 3, and the plug blade 70 pushes the inclined surface 43. Thus, even if the doors 4 and 4 are pushed and opened, the doors 4 and 4 are not opened due to interference with the protrusions 32. When the plug blade 70 is inserted, the door 4 tries to tilt in the left-right direction in FIG. 6 because the plug blade 70 hits the inclined surface 43. However, the door 4 is long in the sliding direction of the door 4 and the other door 4. Since the bar-like piece 40 protruding toward the side is located on the middle frame 3, the bar-like piece 40 prevents the inclination .
[0019]
In view of the fact that the rib 47 provided on the surface on the side of the inner frame 3 where the flat plug blade 70 of each door 4 comes into contact has a large resistance applied to the door 4 when the flat plug blade 70 is inserted. It is the provided reinforcement rib.
The pair of springs 5 and 5 that are coil springs are provided on both sides without being provided between the doors 4 and 4, even if the springs 5 and 5 are broken by opening and closing the doors 4 and 4. This has the meaning of preventing the occurrence of a short circuit. As shown in FIGS. 5 and 6, the portion of the door 4 that receives the spring 5 is formed as a hole 44 into which the boss 45 projects, and the base becomes thicker when the spring 5 is fitted into the hole 44. The spring 5 is engaged with the boss 45. When assembling, the spring 5 is assembled in the cover 11 in a state in which the spring 5 is assembled to the door 4, but the spring 5 does not fall out of the door 4, and the assembling workability is good.
[0020]
In the above embodiment, the one in which the insertion hole 14 is closed by the pair of doors 4 and 4 is shown, but compared to the one in which the insertion hole 14 is closed only by the single door 4, When the insertion hole 14 is closed by combining the two doors 4, 4, the retraction space of the door 4 when the insertion hole 14 is opened can be reduced. It is advantageous when providing.
[0021]
In addition, when using two sets of doors 4 and 4, here, the same type and size of doors are used to reduce the number of parts, but both doors 4 and 4 are necessarily of the same size and size. Need not be.
FIG. 11 shows a case where the outlet is attached to the embedded wiring box 53. The surface of the wiring box 53 in a state where the locking protrusion 60 protruding from the assembly frame 6 is locked to the mounting frame 50 and attached to the mounting frame 50. Fixed to. A surface plate 52 is attached to the surface of the wiring box 53 via the plate 51, and the surface of the outlet faces a window formed on the surface plate 52.
[0022]
【The invention's effect】
As described above, in the present invention, the blade receiving portion that receives the round pin type blade, the blade receiving portion that receives the flat type blade, and the quick connection that mechanically and electrically connects the electric wire inserted from the outside. Since the terminal is housed in a case formed as a standardized single module size for embedded wiring devices, the round pin type plug blade and flat type have the same size as the single module. The door has a built-in door that opens and closes the insertion hole for the plug blade formed in the case, preventing accidental electric shock by the door. It is something that can be done. In particular, an inner frame is mounted in a case made up of a cover and a body having a plug blade insertion hole, and the door is disposed in a space between the inner frame and the inner surface of the cover. Each of the doors having a pair of wing pieces to be slidably opposed to each other has a bar-like piece protruding toward the other door side, and the bar-like piece long in the sliding direction is on the middle frame The door with the blade piece located between the pair of plug blade insertion holes formed in the case and the blade receiving portion is formed as an inclined surface on the surface of the blade hole on the insertion hole side. Since the insertion hole is opened by sliding against the spring bias by pressing the inclined surface with the plug blade, the door can be rationally arranged in the case of one small module. , Protrudes from the door toward the other door and is long in the sliding direction of the door Rod-like pieces are, to the opening and closing operation of the door smoothly ones.
[0023]
The door has wing pieces projecting on both sides located directly below the pair of plug blade insertion holes, and is swingable around the middle of both wing pieces. It is preferable that a stopper for preventing the opening operation of the tilted door is provided. When only one plug blade is inserted, the door is prevented from being tilted and opened, so that an accident due to the insertion of the one blade can be prevented.
[0024]
If the door is provided with reinforcing ribs in the vicinity of the contact portion of the flat type plug blade, the door will not be damaged by the resistance applied when the flat type plug blade is inserted.
In the case, an abnormal opening prevention portion for preventing abnormal opening of the blade receiving portion is provided. The blade receiving spring of the blade receiving spring due to the size of the clearance in the case that can receive a round pin type and a flat type plug blade. Damage can be prevented.
[0025]
Further , when the middle frame has an engagement portion with the cover, good assemblability can be obtained.
The middle frame and the body are provided with a partition portion for partitioning between the pair of blade receiving portions corresponding to the pair of plug blades, and the partition portion of the middle frame and the partition portion of the body are provided with mutual engaging portions. It is preferable. It is possible to prevent a short circuit due to the sneak of chips generated by opening and closing the plug.
[0026]
If the two doors have the same shape and the same size, manufacturing and assembly can be rationalized.
Both doors are urged in the direction of mutual closing by a spring disposed between each outer surface and the inner wall surface of the cover, which is advantageous for preventing a short circuit between different poles due to breakage of the spring.
[0027]
In the case of providing an overlap portion where both doors overlap each other, a gap is not generated between the doors, and it is possible to prevent a thin foreign object from passing through. Also, if the door has a spring temporary locking engagement portion, it becomes easy to incorporate the spring and the door into the cover. When the spring is a coil spring, the door has a hole through which the boss protrudes. When it is provided as an attachment part, the assembly of the spring to the door becomes easy.
[0028]
The cover preferably has a pair of door positioning means on its inner surface. The closed position of the door can be set to an appropriate position, and accordingly, the operation of opening the door can be made smooth by pushing the door with the plug blade .
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of an example of an embodiment of the present invention.
FIG. 2A is a front view of the same, and FIG. 2B is a front view of a state in which the cover is removed.
3A is a front view showing a state in which the door is opened, and FIG. 3B is a front view showing a state in which a cover is removed while the door is open.
FIG. 4 is a cutaway side view of the above.
FIG. 5 is an exploded perspective view of the door and the spring.
6A and 6B are cross-sectional views showing a combined state of the doors according to the embodiment.
7A is a rear view of the cover, and FIG. 7B is a front view with the cover removed.
FIG. 8 is a longitudinal sectional view of the same.
FIGS. 9A and 9B show a state in which only one side blade is inserted, where FIG. 9A is a longitudinal sectional view and FIG. 9B is a partially enlarged view.
FIGS. 10A and 10B show a state in which only one side of the blade is inserted, where FIG. 10A is a cross-sectional view and FIG. 10B is a partially enlarged view.
FIG. 11 is an exploded perspective view showing an attached state.
[Explanation of symbols]
1 Case 2 Blade receiving spring 4 Door

Claims (13)

Standardization of embedded wiring equipment with a blade receiving part that receives a round pin type blade, a blade receiving part that receives a flat type blade, and a quick connection terminal that mechanically and electrically connects an externally inserted electric wire. And a pair of doors for opening and closing a plug blade insertion hole formed in the case, and the plug blade insertion. An inner frame is mounted in a case composed of a cover and a body having holes, and the door is disposed in a space between the inner frame and the inner surface of the cover. The doors that are slidably opposed to each other are each provided with a bar-like piece that protrudes toward the other door, and the bar-like piece that is long in the sliding direction is located on the middle frame, A blade between a pair of plug blade insertion holes formed in the case and the blade receiving portion The door was positioned has the insertion hole side of the wings is formed as an inclined surface, it against the spring bias in which opening the slide to the insertion hole by the pressing inclined surface by the plug pins An outlet with a door. The door has wing pieces projecting on both sides located directly below the pair of plug blade insertion holes, and is swingable around the middle of both wing pieces. The outlet with a door according to claim 1, further comprising a stopper for preventing the opening operation of the inclined door. 2. The outlet with door according to claim 1, wherein the door includes a reinforcing rib in the vicinity of a contact portion of the flat type plug blade. The outlet with door according to claim 1, wherein an abnormal opening preventing portion for preventing abnormal opening of the blade receiving portion is provided in the case. The outlet with door according to claim 1, wherein the middle frame includes an engaging portion with the cover . The middle frame and the body are provided with a partition portion for partitioning between the pair of blade receiving portions corresponding to the pair of blades, and the partition portion of the middle frame and the partition portion of the body are provided with mutual engaging portions. The outlet with a door according to claim 5. The outlet with door according to claim 1 , wherein both doors have the same shape and size . 2. The outlet with door according to claim 1 , wherein the doors are urged in a direction to close each other by a spring disposed between each outer surface and the inner wall surface of the cover . The outlet with a door according to claim 2, wherein the bar-shaped piece is placed in a groove formed in the inner frame, and the door is swingable about the bar-shaped piece . The outlet with door according to claim 1 , wherein both doors are provided with overlapping portions overlapping each other . 9. The outlet with a door according to claim 8, wherein the door includes a spring temporary locking portion . 9. The outlet with door according to claim 8, wherein the spring is a coil spring, and the door is provided with a hole through which the boss protrudes as a spring mounting portion . 2. The outlet with door according to claim 1, wherein the cover has a pair of door positioning means on its inner surface .

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