JPH0696910B2 - Inner frame locking device at inspection port - Google Patents

Description

Detailed Description of the Invention [Industrial applications]

The present invention relates to a locking device for an inner frame at an inspection port.

[Prior art]

Generally, as a locking device of this type, as shown in FIG. 8, the operating rod 8 arranged along the inner wall or the outer wall of the inner frame 20 is exposed to the surface portion 21 of the inner frame 20. It has been proposed that the locking rod 3 is operated to rotate horizontally, and the locking rod 3 is moved forward and backward toward the outer frame 2 side by the swinging motion of the crank portion 80 bent at the upper end of the operating rod 8. Inner frame of 1
The fixing to 20 was performed by sequentially fixing each component to the inner frame 20.

[Problems to be Solved by the Invention]

However, the work of fixing the locking device 1 to the inner frame 20 includes the work of arranging a relatively long rod having the crank portion 80 at the upper end at a predetermined position, and therefore has the drawback of being inefficient. Met. SUMMARY OF THE INVENTION The present invention has been made to solve the above drawbacks, and an object of the present invention is to provide a locking device having good workability in assembling.

[Means for Solving the Problems]

According to the present invention, the object is to pivotally attach the rotating piece 4 having the locking rod 3 to the outer frame 2 to the ceiling piece 60, as shown in FIGS. 1 to 4 corresponding to the embodiment. The rising wall 61 is formed with a locking wall 5, and the fixing wall 6 is fixed to the inner wall of the inner frame 20 at the rising piece 61 and the locking wall 5 of the fixing member 6. An operating rod receiver 7 which is hooked on a hook 70 and is suspended from the fixing member 6, and an operating crank 82 which drives the rotating piece 4 on the upper end of the straight rod portion 81.
And the operation head 83 exposed on the surface 21 of the inner frame 20 is formed at the lower end of the straight rod 81, and the vertical groove formed in the operation rod receiver 7 in the straight rod 81. This is achieved by providing a locking device for the inner frame at the inspection port, which has an operating rod 8 held elastically at 71.

[Action]

Based on the above configuration, the operating rod 8 according to the present invention is elastically held by the operating rod receiver 7, and the operating rod receiver 7 is fixed to the fixing member 6 by locking the hooking claw 70 to the locking wall 5 of the fixing member 6. It is connected and fixed to. As a result, the operating rod 8 which has conventionally been troublesome to arrange is sub-assembled to the fixing member 6, and the fixing work of the locking device 1 is completed only by fixing the fixing member 6 to the inner frame 20. .

【Example】

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. 2 and 3 show a ceiling inspection port provided with a locking device 1 according to the present invention, in which 2 is an outer frame fixed to a ceiling opening (not shown), and 20 is an opening of this outer frame 2. It is an inner frame that is rotatably supported inside. A locking device 1 having a locking rod 3 that advances and retracts from the open side edge of the inner frame 20 is fixed to the open end edge of the inner frame 20, and the locking rod 3 is fixed to the rod receiver 22 of the outer frame 2. It is configured such that the closed state of the inner frame 20 is maintained by making the inner frame 20 penetrate. As shown in FIG. 4, the locking device 1 includes an operating rod receiver 7 suspended from a fixing member 6 pivotally mounted on a rotating piece 4, and an operating rod elastically held by the operating rod receiver 7. And 8 are configured. The fixing member 6 is formed by bending a plate material into an L-shaped cross section. The ceiling piece 60 is pivotally mounted with the rotating piece 4 having one end of the locking rod 3 pivotally attached thereto, and the rising piece 61 is provided with the rising piece 61. ,The inner frame
A screw hole 62 to 20 is formed. The rotating piece 4 is a plate-shaped member in which a step portion 40 is formed at a pivot portion of the fixed member 6,
One wing piece is further extended to form a long hole 41 into which an operation crank 82 of an operation rod 8 described later is loosely fitted. Further, an opening 63 is provided at a boundary portion between the ceiling piece 60 and the rising piece 61 of the fixing member 6, and an operating rod described later is provided at both end portions of the wall surface of the rising piece 61 which constitutes a lower end edge of the opening 63. A locking wall 5 that supports the receiver 7 is formed, and a central portion of a rising piece 61 sandwiched by the locking wall 5 is curved inward to form a holding wall 64. The operating rod 8 for operating the rotating piece 4 is a rod-shaped body in which the operating crank 82 at the upper end of the straight rod portion 81 is bent and formed, and the operating crank 82 is loosely fitted in the long hole 41 of the rotating piece 4 to directly connect it. By rotating the rod 81, the rotary piece 4 can be rotated. This operating rod 8 is provided with a direct rod 81
The operation head 83, which is bulged at the lower end of the straight rod 81, is attached to the operation rod receiver 7 by being elastically locked, and is mounted on the surface 21 of the inner frame 20 in an exposed state. By forming the head portion 83 in a slotted shape, it can be easily operated by the tip of a driver or the like. On the other hand, as shown in FIGS. 4 and 5, the operation receiving rod 7 is an injection-molded product such as a synthetic resin material, and the hooking claw 70 is locked to the locking wall 5 of the fixing member 6 to fix the same. A vertical groove that is suspended from the member 6 and that accommodates the direct rod portion 81 of the operating rod 8 in the front portion.
71 is formed, and locking claws 72 are formed on the upper and lower ends of the vertical groove 71.
To project and hold the operating rod 8 elastically. The hooking claw 70 is formed at the tip of the wing piece 73 that projects laterally from the upper end of the operating rod receiver 7. By forming a tapered surface 74 at the tip, the hooking claw 70 can be inserted into the locking wall 5. It's been easy. In addition, the back surface 75 of the operating rod receiver 7
Is formed in a curved surface corresponding to the above-mentioned holding wall 64, and the back surface 75 abuts the holding wall 64 during suspension on the fixing member 6 to prevent wobbling. As shown in FIG. 1, the operating rod receiver 7 in this embodiment has a notch opening 24 formed by notching the finishing material 23 of the inner frame 20.
The cutout opening 24 is covered with the escutcheon member 9 to prevent the surface portion 21 from being exposed. As shown in FIGS. 1 and 6, the escutcheon member 9 has a hole through which the operating head 83 of the operating rod 8 is inserted in the central portion.
A locking wing 92 and an insertion wing 93 are formed on the back surface of the decorative surface 91 forming the 90, and the insertion wing 93 is inserted into the insertion hole 77 formed on the back surface of the operation rod receiver 7. It is mounted by elastically locking the locking hole 94 of the locking wing 92 to the locking projection 76 on the side of the operating rod receiver 7. Therefore, according to this embodiment, the hook claw is hooked on the locking wall 5 of the fixed member 6 to which the rotating piece 4 and the locking rod 3 are previously attached.
After hooking 70 from above and temporarily connecting the operating rod support 7,
The operating crank 82 of the operating rod 8 is loosely fitted in the long hole 41 of the rotating piece 4, and then the straight rod portion 81 of the operating rod 8 is inserted into the vertical groove of the operating rod receiver 7.
When pressed in the 71 direction, the locking claw 72 protruding from the opening of the vertical groove 71 elastically bends and holds the straight rod portion 81 of the operating rod 8 in the vertical groove 71. In this state, the operating rod 8 is in a state of being temporarily held by the fixing member 6 via the operating rod receiver 7, and thereafter, as shown in FIG.
A screw 25 is screwed onto the inner frame 20 from the outside of the inner frame 20 to fix the locking device 1 which is a subassembly part to the inner wall surface of the inner frame 20. In this state, the back surface 75 of the operating rod receiver 7 is pressed against the inner wall surface of the inner frame 20 by the holding wall 64 of the fixing member 6,
The wobbling of the operating rod receiver 7 is completely prevented, and by connecting the escutcheon member 9 to the operating rod receiver 7, the notch opening 24 of the inner frame 20 is closed and the fixing work of the locking device 1 is completed. . In the above description, the locking wall 5 of the fixing member 6
In the above, the case where the opening 63 is formed in the rising piece of the fixing member 6 is shown. However, other than this, for example, a member having a U-shaped cross section is joined to the rising piece 61 to form various shapes. Can be formed by the above method. Also, the inner frame 20
It is needless to say that the escutcheon member 9 need not be attached when the hole into which the operating head 83 of the operating rod 8 is inserted is directly formed.

【The invention's effect】

As described above, according to the locking device of the present invention,
Since the operating rod, the operating rod receiver, and the fixing member can be sub-assembled, the workability of attaching to the inner frame can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state where a locking device according to the present invention is fixed to an inner frame, FIG. 2 is a perspective view showing a ceiling inspection port to which the locking device according to the present invention is applied, and FIG. 4 is a plan view of the part, FIG. 4 is an exploded perspective view of the locking device according to the present invention, FIG. 5 (a) is a front view showing the operating rod receiver, and FIG. 5 (b) is B of FIG. 5 (a). FIG. 6 is a rear view of the escutcheon member, FIG. 7 is a sectional view taken along line VII-VII of FIG. 1, and FIG. 8 is a side view showing a conventional example. 1 ... Locking device 2 ... Outer frame 20 ... Inner frame 3 ... Locking rod 4 ... Rotating piece 5 ... Locking wall 6 ... Fixing member 60 ... Ceiling piece 61 ... Standing piece 7 ... … Operating rod support 70 …… Hooking claw 71 …… Vertical groove 8 …… Operating rod 81 …… Direct rod 82 …… Operating crank 83 …… Operating head.

Claims (1)

[Claims] A ceiling piece is pivotally mounted with a rotating piece having a locking rod for locking to an outer frame, and a rising wall is formed with a locking wall, and the rising piece is fixed to the inner wall of the inner frame. A fixed L-shaped cross section, an operating rod receiver that is hooked on a locking wall of the fixed member and suspended by the fixed member, and the rotary piece is attached to the upper end of the straight rod. In addition to forming an operating crank to be driven, an operating head exposed on the surface of the inner frame is formed at the lower end of the straight rod part, and the straight rod part is elastically ejected in a vertical groove formed in the operating rod receiver. A locking device for an inner frame at an inspection port, which has an operating rod to be held.