JPH02112865U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a plan view of a locking device for a grating lid according to an embodiment of the present invention in a locked state;
The figures are a sectional view taken along the line A-A in FIG. 1, FIG. 3 is a sectional view taken along the line B-B in FIG. 2, FIG. 4 is a sectional view taken along the line CC in FIG. Figure 5 is D-D in Figure 4.
6 is a sectional view taken along the line EE in FIG. 4, and FIG. 7 is a sectional view taken along the line FF in FIG. 4. 1... grating lid, 2... crosspiece member, 3...
...Deck, 4...Case, 5...Side wall, 6...
Horizontal axis, 7... Lid holder frame, 8... Receptacle, 9...
Hook body, 10... Horizontal pivot, 11... Follower pin, 12... Operating lever, 13... Lock body, 1
4...Key insertion recess, 15...Lock shaft, 16...
...Horizontal pivot, 17... Lid plate, 18... Key insertion recess, 19... Shaft hole, 20... Locking protrusion, 21...
Receiving groove part, 22... Lock disc, 23... Operating end part,
24...Key handle, 25...Spiral groove, 26...
Drive cylindrical body, 27... Bottom wall portion, 28... Guide hole, 29... Push-up portion, 30... Emergency release rod, 38... Spring receiving plate, 85... Biasing spring, 90
...Emergency release lever, 91...Passive plate section.

Claims (1)

[Scope of utility model registration request] A deck 3 is fixed to the crosspiece 2 of the grating lid 1; a hook is pivotally connected to a case 4 protruding from the lower side of the deck 3 by a horizontal pivot 6, and is engaged with and disengaged from a receiving part 8 on the lid holder frame 7 side; body 9; an operating lever which is pivoted to the case 4 at a position below the horizontal pivot 6 by a horizontal pivot 10, has a driven pin 11 at its tip, and whose middle upper surface abuts the side driven part 33 of the hook body 9; 12; a lock main body 13 fixed to the deck 3 and disposed between the crosspiece members 2; a lock shaft 15 fitted into the lock main body 13 and having a key insertion recess 14 on its upper surface;
A cover plate 17 is pivotally connected to the lock body 13 by a horizontal pivot 16 and closes the key insertion recess 14; a key insertion recess 18 is formed on the upper surface and is rotatably fitted into the shaft hole 19 of the cover plate 17; , the locking protrusion 20 is connected to the lock body 1
a lock disc 22 that locks the cover plate 17 to the lock body 13 by engaging with the receiving groove part 21 on the third side; and an operating end part 23;
is the key insertion recess 18 of the lock board 20 and the lock shaft 1.
A key handle 24 that engages and disengages from the key insertion recess 14 of No. 5 and whose side protrusion 34 engages with a retaining portion 35 on the lock body 13 side; and a key handle 24 that is fixed to the protruding lower end of the lock shaft 15 and the driven pin 11 slides. a driving cylindrical body 26 having a spiral groove 25 formed on its outer circumferential surface; and an emergency release lever 90 which is pivotally attached to the case 4 by a horizontal pivot 10 and whose intermediate upper surface abuts the side passive part 33 of the hook body 9.
and; an emergency release rod 30 that is fitted into a guide hole 28 of the bottom wall portion 27 of the case 4 so as to be movable up and down, and has a push-up portion 29 at its upper end that abuts the passive plate portion 91 of the emergency release lever 90. and: emergency release rod 3
0 in the standby position and the bottom wall 2
A locking device for a grating lid, which comprises an emergency opening rod 30 protruding downward from the opening 7, and an operating section 32 provided at the lower end.