JPH0337554Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of application and overview of the invention) This invention relates to a locking device for a single-opening lid of a rice cooker, etc., and relates to the structure of the shaft support of a lock lever provided at the free end of the lid. The aim is to simplify the

(Prior art and its problems) In a heat-retaining rice cooker, in order to improve the heat retention performance of rice in the rice cooker, a heat-retaining layer filled with a heat insulating material is provided in the body that houses the rice cooker and the lid, respectively. A temperature-controlled heater is provided within the heat-insulating layer. Since it is necessary to connect electrical wiring between the lid and the body, this type of rice cooker has a single-opening lid, and for convenience of carrying, the lid is equipped with a handle. A locking device is provided at its free end to connect the lid and the barrel.

As for the rice cooker of the above type, there is already the one shown in Figure 4 (see the new product knowledge about "Electronic gas rice cooker: high heat cooking pappa" published by Osaka Gas Co., Ltd.), and in this one, the center part of the lid 1 A heat insulating layer 32 with a built-in heater 31 is provided on the lower surface of the lid, the handle 2 is attached to the lid so as to be located on the diameter line of the upper surface of the lid 1, and one end of the handle 2 is attached to the upper end of one side of the body 4. The other free end is provided with a locking device 5.

This lock device 5 includes a lock lever 52 equipped with an operating knob 51, a shaft 53 and a bearing stand 54 that rotatably support the lever, a spring 55 that biases the lock lever 52, and a spring 55 that is provided on the body 4. It consists of an engaging protrusion 41. The tip of the lock lever 52 has an opening 5 into which the engagement protrusion 41 is fitted.
6, and when the lid 1 is closed, the opening 56 and the engaging protrusion 41 are fitted and engaged, and the lid 1 is locked in the closed state.

However, with this conventional model, the lock lever 5
2 into the handle 2 was troublesome.

The handle 2 has a main body part 21 having an open part in the center.
and a cover plate 22 that is fitted into this opening, so the lock lever 52 can be installed with the cover plate 22 removed.
This is because after the lock lever 52, shaft 53, and bearing pedestal 54 are assembled into a block, the bearing pedestal 54 must be screwed to the main body 21 of the handle.

In other words, this is because the number of work steps is large and the number of parts is large.

(Technical Problem) The present invention solves the problem of the operation knob 51 as described above.
A lock lever 52 provided at the upper end is rotatably attached to one end of the handle 2 provided on the top surface of the lid 1, and an opening 56 is provided at the tip of the lock lever, which can be engaged when the lid 1 is closed. In a single-opening lid locking device in which an engaging protrusion 41 is provided at the upper end of the body 4 and the locking lever 52 is constantly urged in the engaging direction by a spring 55, in order to simplify the lock lever assembly work, The technical problem is to complete the assembly only by fitting the lock lever.

(Means) The technical means for solving the above technical problem will be explained using the reference numerals used in the description of the embodiments. This technical means includes an extension piece 6 provided at one end of the operation knob 51, and the tip of the extension piece 6. A shaft piece 61 is formed to cross this extension piece, and these extension pieces and the shaft are integrally molded together with the operating knob 51, and a partially open bearing ring 23 into which the shaft is fitted from the horizontal direction is synthesized. Main body part 21 of the resin handle 2
The spring 55 is a compression spring interposed between the lower surface of the operating knob 51 and the upper surface of the main body portion 21.

(Operation) The above technical means of the present invention operates as follows.

Attach the operating knob 51 to the lock lever 52,
With the lid plate 22 of the handle 2 removed, the main body 21
The shaft piece 61 of the operating knob is forcibly inserted into the bearing ring 23 from the open part of the bearing ring 23 while the spring 55 is interposed between the lower surface of the operating knob and the lower surface of the operating knob.

As a result, the shaft piece 61 is rotatable by the bearing ring 23 and held in a non-slip state, and the lock lever 52 is biased in a predetermined rotational direction by the spring 55. Part 21
When installed, each of the above parts will be set in a predetermined state.

(Effects) Since the present invention has the above configuration, it has the following unique effects.

In addition to assembling the operating knob 51 and the lock lever 52, the shaft piece 61 of the operating knob 51 is attached to the bearing ring 2.
Since the installation of the lock lever is completed by simply forcing it into the lock lever 3, the assembly of the lock device is greatly simplified and the working time is shortened.

Since the shaft piece 61 is simply forcefully fitted into the bearing ring 23, the opening 5 relative to the fulcrum of the lock lever 52 is smaller than the conventional mounting using screws.
The variation in the position of 6 is reduced.

Furthermore, since the number of parts for the locking device is reduced, it can be manufactured at a correspondingly low cost.

(Example) Hereinafter, an example of the present invention will be described based on FIGS. 1 to 3.

In this embodiment, the spring 55 is a compression spring, and one end of the spring 55 is fitted into a projection 57 projecting from the bottom surface of the operating knob 51, and the other end is fitted into a projection 24 projecting from the bottom of the main body 21 of the handle 2. It is installed in the same position.

The lock lever 52 also includes a bearing ring 23 that serves as a swinging fulcrum for the lever, and a protrusion 4 provided on the body 4.
1, the side surface is set to a predetermined shape, and an opening 58 as shown in FIG. 2 is formed in the middle thereof. The opening is the main body part 21 of the handle 2.
The bearing ring 23 provided in the lock lever 5
The shaft piece 61 of the operating knob 51 extends through and protrudes from 2.
The size of the opening 58 is set to be larger than the length of the shaft piece 61 and the width of the extension piece 6. As a result, in this embodiment, the shaft piece 61 can be fitted into the bearing ring 23 while the lock lever 52 and the operating knob 51 are kept integrated.

On the other hand, the bearing ring 23 is integrally formed at the bottom of the main body 21, and this bearing ring 23 is formed into a shape as shown in FIG.

That is, arcuate pieces 26, 26 are extended at both ends of a platform 25 having a semicircular recess 24 at the upper end so as to be continuous with the recess, and the tips of the arcuate pieces 26, 26 When the shaft piece 61 is forcibly inserted between the part and the recessed part 24, as shown in FIG.
It is held in a locked state and can be rotated.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram of the main parts of the embodiment of the present invention, Figure 2
The figure is a plan view of the main parts, FIG. 3 is a perspective view of the bearing ring, and FIG. 4 is an explanatory diagram of a conventional example.
... Lid plate, 23 ... Bearing ring, 41 ... Engagement protrusion,
4...Body part, 51...Operation knob, 52...Lock lever, 55...Spring, 56...Opening, 6...
Extension piece, 61...Shaft piece.

Claims (1)

[Scope of utility model registration request] The operating knob 51 is rotatably attached to one end of the handle 2 provided on the top surface of the lid 1 with a lock lever 52 provided at the upper end, and an opening 56 is provided at the tip of the lock lever.
A single-opening lid is provided with an engaging protrusion 41 on the upper end of the body 4 that can be engaged with this opening when the lid 1 is closed, and the lock lever 52 is constantly biased in the engaging direction by a spring 55. In this lock device, an extension piece 6 is provided at one end of the operation knob 51, a shaft piece 61 is formed at the tip of the extension piece 61 so as to cross this extension piece, and these extension pieces and the shaft are integrally molded together with the operation knob 51. A partially open bearing ring 23 into which the shaft is fitted from the horizontal direction is integrally formed with the main body 21 of the handle 2 made of synthetic resin, and a spring 55 is connected to the lower surface of the operating knob 51 and the upper surface of the main body 21. A lid locking device using a compression spring interposed between the lid and the lid.