Wiring hole cap

Abstract

The present invention provides a wiring hole cap that is easy to attach to and detach from the wiring hole, and can be opened and closed, but is difficult to detach due to unintended external force, and can hold the wiring hole in an open position. [Solution] The wiring hole cap 1 comprises a frame 2 fixed to the wiring hole portion 101 of the housing plate 100 and a slide plate 3 fitted thereto. The frame 2 has a rectangular opening 25 surrounded by frame portions 21, 22, 23, and 24, and guide protrusions 26 are provided on the inner edges of the frame portions 21 and 22. The slide plate 3 includes a main plate portion 31 that fits into the opening 25 and an engaging claw 32 that snaps into the center of the guide protrusion 26. When the slide plate 3 is pushed from the fitted position to the open position while the engaging claw 32 is engaged with the guide protrusion 26, it is pushed up onto the frame portions 23 and 24 by the push-up slope portion 26c, and the jaw portion 322 of the engaging claw 32 is pressed against the lower surface 26c of the guide protrusion 26, thereby holding it in a predetermined open position with a part of the opening 25 open.

Description

Technical Field

[0001] The present invention relates to a wiring hole cap that is attached to a housing plate so as to close a wiring hole for leading out wiring formed in the housing plate of a device.

Background Art

[0002] Conventionally, a cap for a cord insertion hole described in Patent Document 1 is known. This cord insertion hole cap includes a holding case that is fitted and held in the cord insertion hole, and a cap body that is detachably fitted to the holding case so as to close the cord insertion hole. A locking step portion is formed on the inner peripheral wall of the holding case, and a leg portion that snap-engages with the locking step portion is provided on the cap body. The cap body consists of a separable main cap and a sub-cap. On the lower surface of the main cap, there is a support portion for the sub-cap, and on the sub-cap, there is an insertion piece that slides and engages with the support portion of the main cap. When the cord is not inserted through the cord insertion hole, the appearance is not impaired as it is closed by the cap body. The cap body can be easily removed from the holding case when necessary. Depending on the size of the necessary cord insertion portion, only the sub-cap can be separated from the main cap and removed from the holding case, or the entire cap body including both caps can be removed from the holding case.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the conventional wiring hole caps described above, the engagement force between the legs and the locking step is set to be relatively weak so that the cap body can be easily removed from the retaining case. For this reason, when used as a wiring hole cap for, for example, an electrical equipment housing, the cap is likely to fall out of the wiring hole of the housing due to impact during transportation of the equipment. Also, when a sub-cap is separated from the main cap to form a wiring opening, the cap is likely to fall out of the wiring hole due to contact with the edge of the opening during wiring movement operations after the wiring has been routed out. In either case, there is a problem in that it is difficult to find the fallen cap. Therefore, the object of the present invention is to provide a wiring hole cap that is attached to a housing plate of equipment so as to close a wiring hole formed in the housing plate for wiring outlet, which does not easily come off the wiring hole due to impact or the like, but is easy to attach and detach and open and close, and can hold the wiring hole open without removing the cap during wiring outlet operations. [Means for solving the problem]

[0005] The following description refers to reference numerals in the attached drawings, but the present invention is not limited thereto. To solve the above problems, the wiring hole cap 1 of the present invention comprises a synthetic resin frame 2 fixed to a wiring hole 101 formed in a housing plate 100 of equipment, and a synthetic resin slide plate 3 detachably fitted to the frame 2. The frame 2 comprises first to fourth frame portions 21, 22, 23, 24 and a roughly rectangular opening 25 surrounded by them. Guide protrusions 26 are provided on the lower part of the inner edges of the frame portions 21, 22. The guide protrusions 26 have an upward-sloping surface portion 26c on the upper surface 26a side of the frame portions 23, 24 at the closest position. The slide plate 3 includes a roughly rectangular main plate portion 31 that fits into the opening 25, and engaging claws 32 formed in the center of the sides 311, 312 of the main plate portion 31. Sliding inclined surfaces 313a and 314a are formed on the edges of sides 313 and 314 of the main plate portion 31, facing the push-up inclined surface portion 26c. The engaging claw 32 comprises a leg portion 321 extending downward from the main plate portion and a jaw portion 322 that snap-engages with the lower surface 26b of the guide projection 26. The jaw portion 322 is slidable along the guide projection. When the main plate portion 31 is pushed from the fitting position along the frame portions 21 and 22 to one side of sides 313 and 314, the sliding plate 3 is pushed up to the upper surface of either the frame portion 23 or 24 by the push-up inclined surface portion 26c, and the jaw portion 322 of the engaging claw 32 is pressed against the lower surface 26c of the guide projection 26, thereby holding it in a predetermined open position with a part of the opening 25 open. [Effects of the Invention]

[0006] According to the present invention, the sliding plate 3 can be pushed into the opening 25 of the frame 2 in a direction perpendicular to the plate surface, and the engaging claw 32 can be snap-engaged with the guide projection 26 to easily attach the wiring hole cap 1 to the wiring hole 101. When opening the opening 25 during wiring work, the sliding plate 3 can be moved to the open position and opened without removing the sliding plate 3 from the frame 2, and the jaw portion 322 of the engaging claw 32 can be pressed against the lower surface 26b of the guide projection 26 to maintain the open state. Since the sliding plate 3 does not need to be removed from the frame 2, the engagement between the engaging claw 32 and the guide projection 26 can be strengthened, preventing the sliding plate 3 from unintentionally falling out of the frame 2. [Brief explanation of the drawing]

[0007] [Figure 1] This is an exploded perspective view of the wiring hole cap of the present invention. [Figure 2] Figure 1 shows the wiring hole cap, with (A) being a top view, (B) a front view, (C) a side view, and (D) a bottom view. [Figure 3] (A) is a section view of IIIa-IIIa in Figure 2, (B) is a section view of IIIb-IIIb in Figure 2, and (C) is a section view of IIIc-IIIc in Figure 2. [Figure 4] Figure 1 shows the wiring hole cap with the sliding plate in the open position; (A) is a perspective view from the top, and (B) is a perspective view from the bottom. [Figure 5] Figure 1 shows the state in which the sliding plate of the wiring hole cap is open and held; (A) is a plan view, (B) is a bottom view, and (C) is a Vc-Vc cross-sectional view. [Figure 6] Figure 1 shows the process of removing the sliding plate from the wiring hole cap, with (A) being a perspective view, (B) a plan view, and (C) a bottom view. [Modes for carrying out the invention]

[0008] Embodiments of the present invention will be described with reference to the drawings. In Figure 1, the wiring hole cap 1 comprises a synthetic resin frame 2 fixed to a wiring hole 101 formed in the housing plate 100 of the equipment, and a synthetic resin slide plate 3 that is detachably fitted to the frame 2.

[0009] The frame 2 comprises first and second frame sections 21 and 22 that are parallel to each other, third and fourth frame sections 23 and 24 that connect the ends of the frame sections 21 and 22 in a perpendicular direction, and a roughly rectangular opening 25 surrounded by these four frame sections 21, 22, 23, and 24. The frame 2 is fixed to the housing plate 100 with the lower surface of the flange in close contact with the upper surface of the peripheral edge of the wiring hole 101.

[0010] Guide protrusions 26 are provided along the inner edges of the lower part of the inner edges of the opposing frame portions 21 and 22.

[0011] On the upper surface 26a of the guide projection 26, an upward-sloping inclined portion 26c is formed, which is in the immediate vicinity of the frame portions 23 and 24 and slopes upward toward the frame portions 23 and 24, respectively. On the lower surface 26b of the guide projection 26, an engaging step portion 26e is formed, which bulges downward in the center, and a tightening inclined portion 26d (Figure 2(D) Figure 3(A)) is formed, which is in the vicinity of the frame portions 23 and 24 and slopes downward toward the frame portions 23 and 24, respectively.

[0012] The slide plate 3 comprises a roughly rectangular main plate portion 31 that fits into the opening 25, and a pair of engaging claws 32 that snap into place with the guide protrusions 26 of the frame 2 in a direction perpendicular to the surface of the main plate portion 31.

[0013] The main plate portion 31 has first to fourth sides 311, 312, 313, and 314 corresponding to the first to fourth frame portions 21, 22, 23, and 24 of the frame body 2, respectively, and has a plurality of cut-off portions 315 that can be partially cut off to form an opening for wiring outlet on the sides 313 and 314. Sliding inclined surfaces 313a and 314a are formed on the edges of sides 313 and 314 of the main plate portion 31 that face the push-up inclined surface portion 26c when fitted into the opening 25.

[0014] The engaging claw 32 comprises leg portions 321 extending downward from the central portions of the sides 311 and 312 of the main plate portion 31, and jaw portions 322 that snap into place with the engaging step portion 26e on the lower surface 26b of the guide projection 26.

[0015] The slide plate 3 is fixed to the frame 2 by snapping the jaw portion 322 of the engaging claw 32 to the engaging step portion 26e at the position where the main plate portion 31 fits into the opening 25, and pressing the lower surface of the main plate portion 31 against the upper surface of the guide protrusion 26. The engagement force between the jaw portion 322 and the engaging step portion 26e in the direction perpendicular to the plate surface of the slide plate 3 is set to be large so that it does not unintentionally fall off the housing plate 100 due to vibrations and shocks during equipment transport or external forces applied during wiring routing operations.

[0016] The slide plate 3 can be pushed along one of the sides 313, 314 along the frame parts 21, 22 from the fitting position by hanging a finger on the finger-hanging recess 316. At this time, as clearly shown in FIG. 5(C), one of the sides 313, 314 of the main board part 31 is pushed up by the pushing-up slope part 26c of the guide ridge 26 onto the upper surface of the frame parts 23, 24, and at a predetermined open position, the jaw part 322 of the engaging claw 32 is pressed against the tightening slope 26d of the guide ridge 26. Thereby, the slide plate 3 is held in an inclined state with a part of the opening 25 opened. In this state, the planned cutting part 315 can be cut as needed, or access can be made from the open part into the housing 100 to perform the wiring leading-out operation. During this period, since there is no need to remove the slide plate 3 from the housing plate 100, there is no risk of losing the slide plate 3.

[0017] When the slide plate 3 is pushed and the jaw part 322 of the engaging claw 32 disengages from the engaging step part 26e, a separation G (FIG. 3(B)) is formed between the lower surface 26b of the guide ridge 26 and the jaw part 322 until reaching the tightening slope part 26d. Therefore, in this state, the slide plate 3 can be pulled upward with respect to the frame body 2 by the amount corresponding to the separation G, and the lower surface of the main board part 31 can be lifted from the upper surface of the frame body 2. Further, in this lifted state, as shown in FIG. 6, when the slide plate 3 is rotated about 30° along the plate surface, the jaw part 322 of the engaging claw 32 disengages from the guide ridge 26, so the slide plate 3 can be removed from the frame body 2 in the direction perpendicular to the plate surface. The removal of the slide plate 3 can also be performed by inserting a tool such as a minus driver into the recess 317 to bend the engaging claw 32 inward, but according to the above operation, the use of a tool is unnecessary.

Explanation of Reference Numerals

[0018] 100 Housing plate 101 Wiring hole 1 Wiring hole cap 2 Frame body 21 First frame part 22 Second frame part 23 Third frame part 24 Fourth frame part 25 Opening 26 Guide protrusions 26a Top side 26b Bottom side 26c Upward slope section 26d Tightening slope section 26e Engagement step 3. Slide plate 31 Main plate part 311 First side 312 Second side 313 Third side 313a Sliding inclined surface 314 The fourth side 314a Sliding inclined surface 315 Area to be excised 316 Finger rest recess 317 Recess 32 Engaging claws 321 Legs 322 Jaw

Claims

1. A cap that is attached to the housing plate of an equipment to cover a roughly rectangular wiring hole for wiring outlet formed in the housing plate, comprising a synthetic resin frame fixed to the frame plate and a sliding plate that is detachably fitted to the frame, The frame has first and second frame sections that are parallel to each other, third and fourth frame sections that connect the ends of the first and second frame sections in a perpendicular direction, and a roughly rectangular opening surrounded by the four frame sections, and is fixed to the housing plate with its lower surface in close contact with the upper surface of the peripheral edge of the wiring hole. Guide protrusions are provided along the inner edges of the first and second frame portions of the frame body, respectively. Each of the guide protrusions has an upward-sloping section on the upper surface side of the third and fourth frame sections, which are located closest to the frame sections, respectively. The slide plate comprises a roughly rectangular main plate portion having first to fourth sides corresponding to the first to fourth frame portions and fitting into the opening, and engaging claws formed in the center of the first and second sides of the main plate portion. The main plate portion is provided with sliding inclined surfaces on the edges of the third and fourth sides that face the upward inclined surface when fitted into the opening. The engaging claw comprises a leg portion extending downward from the intermediate portion of the first and second sides of the main plate portion, and a jaw portion that snap-engages with the lower surface of the guide ridge in a direction perpendicular to the plate surface of the main plate portion and is slidable along the guide ridge. The wiring hole cap is characterized in that when the main plate portion is pushed from the fitting position along the first and second frame portions toward either the third or fourth side, the pushing-up inclined surface portion pushes that side toward the upper surface of the third or fourth frame portion, and the jaw portion of the engaging claw is pressed against the lower surface of the guide protrusion, thereby holding the sliding plate in a predetermined open position with a part of the opening open.

2. The wiring hole cap according to claim 1, characterized in that a tightening slope portion is formed on the lower surface of the guide protrusion, near the third and fourth frame portions, respectively, and the jaw portion of the engaging claw is pressed against the tightening slope portion, thereby holding the slide plate in the predetermined open position.

3. On the lower surface of the guide projection, an engagement step is formed at a position corresponding to the engagement claw in the fitting position of the main plate, and by snapping the jaw portion of the engagement claw into the engagement step, the lower surface of the main plate is pressed against the upper surface of the guide projection in the fitting position. The jaw portion of the engaging claw is provided such that, as the main plate is pushed from the fitted position to the predetermined open position, a gap is formed between it and the lower surface of the guide protrusion, thereby causing the lower surface of the main plate to be lifted from the upper surface of the frame. The wiring hole cap according to claim 2, characterized in that the sliding plate is provided so as to be removable from the frame in a direction perpendicular to the plate surface by rotating the plate surface with the main plate portion floating above the upper surface of the frame, thereby disengaging the jaw portion of the engaging claw from the guide protrusion.

4. The wiring hole cap according to claim 1, characterized in that the main plate portion of the slide plate is provided with a notch at the edge of the position corresponding to the engaging claw for inserting a screwdriver to disengage the engaging claw from the guide protrusion.

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