JPH0132995Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a locking device for a pot outer lid.

[Conventional technology]

Conventionally, a pot outer cover is provided with a locking device to prevent the outer pot cover from being opened inadvertently.

As shown in FIG. 7, the conventional lock device has a lock piece 40 partially exposed to the outside of the outer cover 41, and its tip inserted into a guide groove 42 protruding inside the outer cover 41. I try to do that. The lower surface of the lock piece 40 is slidably supported by a mounting member 43. The attachment member 43 is forcibly fitted to the outer lid 41.

As shown in FIGS. 8A and 8B, an engagement protrusion 44 is formed on the outer lid 41, and an engagement recess 45 of the mounting member 43 shown in FIGS. 9A and 9B is formed on this. Forced to fit.

[The problem that the idea attempts to solve]

When the guide groove 42 and the engaging protrusion 44 as described above are provided inside the outer cover 41, the molding die requires a split mold 48 in addition to the upper mold 46 and the lower mold 47, as shown in FIG. When cutting the mold, use this split mold 4.
8 must be slid toward the center of the mold.

Therefore, the manufacturing cost of the mold is high, and
This was causing an increase in mold problems during molding.

Therefore, the purpose of this invention is to construct a mold using only an upper mold and a lower mold by adding some innovation to the engagement structure between the outer lid and the mounting member.

[Means to solve the problem]

In order to achieve the above object, this invention forms an exposure hole for the lock piece in a part of the outer cover peripheral wall, fits the lock piece into the exposure hole so as to be freely retractable, and attaches the lock piece to the mounting member. In a locking device for a pot outer lid which is engaged and whose mounting member is engaged with an engaging protrusion provided on the outer lid, the portion of the peripheral wall in which the exposure hole is formed is formed into an inclined surface whose lower part protrudes outward. , the engaging protrusion is formed inside the exposure hole and within the line-of-sight range when viewed from above.

[Function] With the above structure, the mounting member engages with the engagement protrusion and can be guided by slidably fitting the lock piece into the inner edge of the exposure hole.

Further, since the mold for molding the top lid can mold the engaging protrusion using the top mold and the bottom mold, the mold can be removed by simply moving up and down after molding.

〔Example〕

The attached drawings show the locking device of this invention applied to an air pot. In this air pot, a beak 2 forming a spout 1 projects forward. Further, the front peripheral wall of the outer lid 3 also protrudes forward, and in these parts, the sloped surface 4 of the beak portion 2 and the sloped surface of the outer lid 3 have substantially the same slope and are continuous without a step.

An exposure hole 7 for a lock piece 6 is formed in the inclined surface 5 of the outer lid 3. This exposure hole 7 has inner walls 8 on both sides and a bottom wall 9 on the lower end side. The depth of the bottom wall 9 is approximately half of the bottom of the inner wall 8, and a guide wall 11 is formed at the bottom of the remaining half of the inner wall 8 via a step 10 that is flush with the top surface of the bottom wall 9. An inward engaging protrusion 12 is formed at the lower end of the guide wall 11 . Further, an engagement wall 13 is formed on the lower surface of the bottom wall 9 and projects downward.

The above-mentioned engagement protrusion 12 has an upper end side 14 and an inner end side 15 of the bottom wall 9 in a plan view of the exposure hole 7.
(See Figures 2 and 3).

The locking piece 6 is guided on both side walls 8 by the above-mentioned side walls 8, its upper surface is guided by the upper edge 14, and its lower surface is guided by the bottom wall 9 and the stepped portion 10. In addition, the recess 16 formed on the lower surface of the lock piece 6 is inserted into the bottom wall 9.
It is slidably fitted to the inner end side 15 of the. Further, two legs 17 are formed at the rear lower end of the lock piece 6, and hooks 18 provided at the lower ends engage with claws 19 (FIG. 3) on the pot body.

Further, a coil spring housing portion 21 is formed on the back side of the lock piece 6.

The mounting member 22 of the above-mentioned lock piece 6 is the above-mentioned 2
It has a mounting plate 23 inserted between the legs 17 of the book,
An inverted L-shaped parallel engagement rail 24 is protruded on the plate, and the above-mentioned engagement wall 1 is provided at the tip of the mounting plate 23.
A pawl 25 that engages with 3 is provided in a protruding manner. Further, a support portion 26 for the coil spring 20 is provided at the rear end of the mounting plate 23.

Next, a method of attaching the above lock piece 6 will be explained. First, the lock piece 6 is inserted into the exposure hole 7 from the inner surface of the outer cover 3, and the recess 16 on the lower surface thereof is fitted into the bottom wall 9. After that, the storage part 2 on the back of the lock piece 6
1, or with the coil spring 20 supported by the support portion 26 of the mounting member 22 (FIG. 2), the mounting member 22 is inserted between the two legs 17.

The engagement rail 24 of the mounting member 22 is fitted into the engagement protrusion 12 of the outer cover 3 and moved forward, and when it is moved forward to the maximum extent, the claw 25 is forcibly fitted into the engagement wall 13. This makes it impossible to remove the mounting member 22,
At the same time, it becomes impossible to extract the lock piece 6 to the upper and lower bodies. On the other hand, the coil spring 20
6 is compressed by the forward movement of the pot 6, a forward biasing force is applied to the lock piece 6, the hook 18 engages with the claw 19 of the pot body, and the outer cover 3 is held in the locked state.

Further, when the lock piece 6 is pushed in against the biasing force of the coil spring 20 as shown by the dashed line in FIG. 3, the hook 18 comes off from the claw 19 and the lock is released. In addition, on the back side of the lock piece 6, as shown in FIG.
, and a trapezoidal recess 27 is formed below it, so that when the lock piece 6 retreats, the support part 26 fits into the storage part 21 and the recess 27, and the retreat of the lock piece 6 is not obstructed. .

Next, the mold for forming the outer lid 3 will be explained based on FIG. 6. This mold consists of an upper mold 28 and a lower mold 29.
The upper mold 28 has a protrusion 30 that forms a portion that will become the exposure hole 7 of the outer lid 3, and the protrusion 3
A recess 31 is formed in the lower mold 29 opposite to the recess 31, and the engagement protrusion 12 is formed between the two. Also, exposure hole 7
The bottom wall 9 is also formed between the upper mold 28 and the lower mold 29. The mold cutting is performed by moving these molds 28 and 29 in the vertical direction.

[Effect of idea]

As described above, the pot outer lid locking device according to this invention has an engaging protrusion that is integrated with the outer lid of the mounting member and is formed inside the exposure hole and within the line-of-sight range when viewed from above. Therefore, the mold can be removed by simply moving the mold for forming the engaging protrusion in the vertical direction.

Therefore, the structure of the mold is simplified, which contributes to cost reduction, and also has the effect of reducing problems with the mold during the molding process.

[Brief explanation of drawings]

Fig. 1 is a partially omitted side view of an air pot equipped with a locking device of this invention, Fig. 2 is an exploded perspective view of the same locking device as above, Fig. 3 is a sectional view in an assembled state,
Figure 4 is a sectional view taken along the - line in Figure 3, Figure 5 is a rear view of the lock piece, Figure 6 is a sectional view of the mold for forming the outer lid during molding, and Figure 7 is one of the conventional air pots. FIG. 8A is a partial sectional view of the conventional outer cover, FIG. 8B is a bottom view of FIG. 9A, and FIG.
10 is a side view of a conventional mounting member, FIG. 1... spout, 2... beak, 3... outer lid, 4,
5... Inclined surface, 6... Lock piece, 7... Exposure hole,
8...Side wall, 9...Bottom wall, 10...Step part, 11...
...Guide wall, 12...Engagement protrusion, 13...Engagement wall, 14...Top end side, 15...Inner end side, 16...
recess, 17... leg, 18... hook, 19...
Claw, 20... Coil spring, 21... Storage section, 22... Mounting member, 23... Mounting plate, 24...
...Engagement rail, 25...Claw, 26...Support part, 2
7...Recess, 28...Upper mold, 29...Lower mold, 30
...protrusion.

Claims (1)

[Scope of utility model registration request] A hole for exposing the lock piece is formed in a part of the outer cover peripheral wall,
Fit the locking piece into the exposure hole so that it can freely come out and go out,
In a pot outer lid locking device in which the locking piece is engaged with a mounting member and the mounting member is engaged with an engaging protrusion provided on the outer lid, the lower part of the peripheral wall forming the exposure hole is turned outward. A locking device for a pot outer lid, characterized in that the locking device is formed on a protruding inclined surface, and the engaging protrusion is formed inside the exposure hole and within the line-of-sight range when viewed from above.