JPH0642571Y2 - Cooking equipment lid opening and closing device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lid opening / closing device for cooking utensils, and more particularly, to a lid which is supported in a one-sided open state and is always urged in the opening direction to be closed by a locking device. The present invention relates to a lid opening / closing device of a type that is locked and is opened by pushing an operating portion of the locking device when opening the same.

[0002]

2. Description of the Related Art An open / close device for a so-called one-sided lid, in which a rear end is a fulcrum and a front end is a free end, is shown in FIG. Has been. This is used for a lid opening / closing device such as a rice cooker, and as shown in the figure, has a configuration in which the lid body (2) is capped on the upper end opening portion of the appliance body (1), The lid body (2) is constantly biased in the opening direction, and a locking device is interposed between the tip portion of the lid body (2) and the upper front portion of the main body. This locking device is slidably incorporated in the front end portion of the lid body (2) and has its tip portion (31) in the lid body (2).
And an engaged projection (4) provided on the front upper end portion of the instrument body (1), and the tip portion (3) of the engagement body (3) is provided by a spring (32). 31) is always urged in the protruding direction, and the operating portion (3) of the engaging body (3) is
3) is projected on the upper surface of the lid body (2).

In this prior art, the lid body (2) is urged in the opening direction by the urging force of the spring (21) in the shaft support portion (11) of the lid body (2), and the engaging body is In the state where (3) and the engaged protrusion (4) are not engaged with each other, the open state is maintained. Then, when the lid body (2) is closed, the relationship between the protruding position of the tip end portion (31) and the engaged protrusion (4) is properly set. Therefore, in the closing process, the tip end portion ( 31) is pushed along the inclined surface of the upper surface of the engaged projection (4) and the lid (2) is completely closed, that is, the tip is located below the engaged projection (4). When the part (31) is positioned, the engaged projection (4) and the tip part (31) are engaged in the release blocking state,
The lid (2) is locked in the closed state. Then, in order to open the lid body (2), the operating portion (33) integrated with the tip portion (31) is slid against the biasing force of the spring (32) to engage with the tip portion (31). Release the engagement with the mating protrusion (4). Then, since the biasing force in the opening direction acts on the lid body (2), the lid body (2) is automatically opened.

However, the problem with this prior art remains that the operability is poor. When the operation portion (33) is operated to release the engagement between the tip end portion (31) and the engaged projection (4), a force for pressing the lid body (2) downward tends to act. The reason is that even if the sliding force is released after the tip portion (31) is slid, the tip portion (31) and the engaged projection (4) may be engaged again.

According to the present invention, the lid body (2) capped on the open end of the instrument body (1) is pivotally supported at the rear end of the instrument body (1) to support it in a one-sided open state. The lid body (2) is always biased in the opening direction, and an engagement body (3) of the lock device is provided at the front end portion of the lid body (2), and this engagement body is provided at the front upper end portion of the instrument body (1). In the lid opening / closing device of the cooking utensil, which is adapted to be engaged with the engaged projection (4) provided,
It is an object of the present invention to ensure the opening operation when the lid body (2) is opened by operating the operating portion (33) of the lock device.

[0006]

[Technical Means] A technical means of the present invention for solving the above-mentioned problem is to "install an engaging body (3) mounted on the tip of a lid (2) from a horizontal piece (34) and one end thereof. A swinging lever (30) including a hanging piece (35) that hangs down so that the horizontal piece (34) swings up and down and the hanging piece (35) swings back and forth. The free end portion of (34) is positioned rearward with respect to the swing fulcrum (36), and the engaging body (3) is biased so that the hanging piece (35) swings backward, and the hanging piece (35) is moved. 35) is made to project from the front end of the lid body (2), and an engaging projection (5) is formed at the lower end of the hanging piece (35) and projects in a direction perpendicular to the swinging direction of the hanging piece (35). The engaging projection (5) is made to be retractable in the protruding direction with respect to the hanging piece (35) and is biased in the protruding direction. , A cavity (41) is formed at the upper end of the instrument body (1) for accommodating the lower part of the hanging piece (35) with the lid (2) closed, and is horizontal from the wall surface of the cavity (41). The engaged projection (4) protruding in the direction is provided, and the cross section of the engaged projection (4) is a substantially triangular shape with the lower side being substantially horizontal and having the apex above the engaged projection (4). The front surface of the slanted surface (42) is directed obliquely upward, and the slanted surface (42) is positioned within the ascending / descending locus of the tip of the engaging projection (5) when the lid (2) is opened and closed. On the side wall (43) of the void (41), an engaging rib (44) extending downward at a predetermined distance from the lower end of the inclined surface (42).
To form the engagement rib (44) and the engagement protrusion (5).
Is the hanging piece (35) accompanying the swing of the swing lever (30).
Is set to a one-way engagement relationship in which the rearward movement of the engagement protrusion (5) is prevented during the horizontal movement.

[0007]

The above technical means operates as follows. When the lid body (2) is closed, the inclined surface (42) of the engaged projection (4) is within the vertical movement locus of the engaging projection (5) provided on the hanging piece (35) of the engaging body (3). ) Protrudes, and when the lid (2) is closed, the front end of the lid (2) descends with the tip of the engaging projection (5) in contact with the inclined surface (42). Since the inclined surface (42) is inclined so as to be directed obliquely upward, and the engaging body (3) is arranged so that the hanging piece (35) swings back and forth, this relation is obtained. The compound protrusion (5) goes over the inclined surface (42) and descends. Since the engaging body (3) is biased so that the hanging piece (35) moves rearward, when the engaging projection (5) gets over the inclined surface (42), this engagement is performed. The mating protrusion (5) goes under the engaged protrusion (4),
The upward return movement of the lid (2) is prevented. That is,
The lid (2) is locked in the closed state.

In this state, the engaging protrusion (5) is located behind the engaging rib (44) in the space (41).
Then, when the free end of the horizontal piece (34) is pressed down, the hanging piece (35) rotates forward. At this time, the engaging ribs (44) and the engaging protrusions (5) are paired with each other. In this kinematic relationship, the engaging protrusions (5) are allowed to move forward but are prevented from moving backward. Because of the so-called one-way engagement relationship, this engagement causes the engagement protrusion (5).
When the protrusion exceeds the engaging rib (44), the engaged protrusion (4)
It is on a path that does not re-engage with. Horizontal piece (34) in this state
When the operation force applied to the lid (2) is released, the tip end portion of the lid (2) is moved upward by the opening biasing force applied to the lid (2), and the engagement protrusion (5) becomes the engaged protrusion (4). Escape from the void (41) without engaging with. Thus, when the lid body (2) is opened, when the free end of the horizontal piece (34) is pushed down and then the pushing down force is released, the engaging projection (5) and the engaged projection (4) are released. Is in a state where re-engagement is blocked

[0009]

[Effect] When the lid (2) is opened, the horizontal piece (3
When the free end of 4) is pushed down and then the pushing force is released, the engagement protrusion (5) and the engaged protrusion (4) are in a state in which re-engagement is blocked, so that the engagement body (3) ) The inconvenience such as a defective opening of the lid body (2) due to the operation of) does not occur.

[0010]

Embodiments of the present invention described above will be described in detail with reference to the drawings. This embodiment is applied to the opening / closing device of the lid body (2) of the rice cooker, and as shown in FIG. 1, the lid is attached to the upper end opening portion of the appliance body (1) that houses the rice cooker (10). The body (2) is crowned. The lid body (2) is pivotally supported at the rear end portion of the instrument body (1), and the lid body (2) can be opened and closed vertically with the pivotal support portion (11) as a fulcrum. Further, the shaft support portion (11) is equipped with a spring (21) for biasing the lid body (2) in the opening direction.

A ridge (12) is formed at the front upper end of the instrument body (1), and when the lid (2) is closed, the upper surface of the lid (2) and the ridge are formed. The upper surface of (12) is uniformly continuous. Then, the rear end surface of the raised portion and the front end surface of the lid body (2) substantially coincide with each other. In addition, the upper surface of the raised portion (12) has a device body (1).
Of the instrument operation panel (1
3) is provided. A void space (41) is provided behind the raised portion (12), and the void space (41) is a rectangular recess that opens upward. And this space (4
1) is substantially coincident with the lower surface of the front end of the lid body (2) that is capped on the instrument body (1).

As shown in FIG. 2, the engaged projection (4) is formed at the corner where the rear wall and the side wall of the void (41) intersect.
(4) is formed, and these engaged protrusions (4) and (4) correspond to the hanging pieces (35) of the swing lever (30) as an engaging body (3) described later. As shown in the same figure, each engaged protrusion (4) has a shape protruding from the side wall (43) of the void (41) by a certain amount, the lower surface thereof is set to be substantially horizontal, and the front surface is directed obliquely upward. It is an inclined surface (42). Therefore,
The engaged projection (4) is a short triangular prism whose rear surface is connected to the rear wall of the cavity (41) and whose outer end is connected to the side wall (43). Then, a constant space (W) is formed between the opposed ends of the engaged projections (4) (4). An engaging rib (44) extending vertically is formed on one side wall (43), and the upper end of the engaging rib (44) is located in front of the lower end of the inclined surface (42) and is It has a fixed distance (G) from the lower end.
Further, the cross section of the engaging rib (44) is triangular, and the rear surface is an inclined surface that is directed obliquely rearward and inward, and the front surface portion is a flat surface portion that is perpendicular to the side wall (43).

The other swing lever (30) is an L-shaped lever with the front end as a swing fulcrum (36), and the swing fulcrum (36) is at the front end of the lid (2). The horizontal piece (34) is pivotally supported by the horizontal piece (34) and is housed in the empty chamber (20) of the lid body (2) in a manner extending behind the swinging fulcrum (36). The hanging piece (35) projects downward in a manner of penetrating the opening (22). The horizontal piece (34)
Is accommodated in the empty chamber (20) so that it can swing up and down within a certain range, and the hanging piece (35) allows the same swinging back and forth, so that the opening (22) and the hanging piece are There is a sufficient margin between (35). Further, a knob portion projects upward from the free end of the horizontal piece (34) and is exposed on the upper surface of the lid body (2), which becomes the operation portion (33).
A compression spring (37) is interposed between the horizontal piece (34) and the bottom wall of the vacant chamber (20) so that the operating portion (33) is always in the protruding state. As described above, when the operation portion (33) is pushed in from the initial posture shown in FIG. 1, the horizontal piece (3
4) oscillates downward and the hanging piece (35) oscillates forward, and when the pushing force is released, it reversely oscillates contrary to the above.

The hanging piece (35) is composed of a plate-like body having a constant width which spreads to the left and right. A pair of engaging projections (5) (5) project left and right at the lower end of the hanging piece (35). To do.
Each engaging projection (5) has an inclined surface (51) with its front surface facing obliquely outward, and its front end has an edge portion (52).
Has become. Of these engaging protrusions (5) (5), one engaging protrusion (5) corresponding to the lower engaging rib (44)
Is retractable as shown in Fig. 3, and the spring (5
It is always urged in the protruding direction by 3). The other engaging projection (5) is fixed integrally with the hanging piece (35).

The above-mentioned relational position between the swing lever (30) and the engaged projection (4) is preset to a predetermined relation,
When the lid body (2) is closed while the swing lever (30) is maintained in the initial posture, the inclination of the engaged protrusion (4) is within the vertical movement locus of the tip of the engaging protrusion (5). The surface (42) is positioned so that the distance (W) between the opposed end surfaces of the engaged projections (4) and (4) is larger than the lateral width of the hanging piece (35) and the engagement projections (5) ( 5) Edge part (52) (5
2) It is set smaller than the mutual interval. Further, the distance between the lower end of the inclined surface (42) and the engaging rib (44) is set to be larger than the thickness of the edge portion (52), and the engaging protrusion (5) when the lid (2) is closed is set. The protrusion height of the engaging rib (44) is determined so that the top of the engaging rib (44) protrudes within the movement trajectory in the front-back direction.

Therefore, when the lid body (2) is closed while the swing lever (30) is maintained in the initial posture shown in FIG. 1, the hanging piece (35) is positioned between the engaged projections (4) and (4). Then, the tip ends of the engaging projections (5) (5) at the lower end of the hanging piece (35) are in contact with the inclined surfaces (42) (42). At this time, the hanging piece (3
Since 5) can swing back and forth, and is biased by the compression spring (37) so as to return to the rear, as the lid (2) is closed, the engagement projection (5 ) (5) contacts the inclined surfaces (42) (42), that is, the hanging piece (35) descends while swinging forward. At this time, one of the edge portions (52) has an inclined surface (4
It passes through the gap (G) between the lower end of 2) and the engaging rib (44). When the lid body (2) is completely closed, the engaging projection (5) is disengaged from the lower end of the inclined surface (42), and as shown in FIG. 35) is restored to the initial posture, and the engaged projection (4)
The engaging projections (5) and (5) go under the (4). As a result, even if the opening biasing force acts on the lid (2),
This lid (2) is locked in the closed state, and the lid (2)
Closes the upper open end of the instrument body (1).

Next, in order to open the lid body (2), the operating portion (33) is once pushed in, and then this operating force is released. At this time, when the operation portion (33) is pushed in, the engagement protrusion (5) swings forward in the space (41). Then, the one inclined surface (51) and the engaging rib (44) come into contact with each other, but the inclined surface (51) faces obliquely outside, and the rear surface of the engaging rib (44) faces obliquely inside. Moreover, since the inclined surface (51) is equipped so as to be retractable and is biased in the protruding direction, the engaging projection (5) and the engaging rib (44) are engaged in one way by the movement. This means that once the engaging projection (5) is located in front of the engaging rib (44), the rearward return is blocked. Then, when the pushing force of the operation portion (33) is released, the engaging protrusion (5)
While being positioned in front of the engaging rib (44), the front end portion of the lid body (2) is lifted by the opening biasing force of the spring (21). Since the upper end of the engaging rib (44) is located in front of the lower end of the inclined surface (42), the hanging piece (35) of the swing lever (30) mounted on the front end of the lid (2) is The engaging projections (5) provided on the lid (2) ascend and return together with the lid (2) without engaging with the engaged projections (4), and the lid (2) returns to the open position.

As described above, in order to open the lid body (2) in the locked state, it suffices to push in the operating portion (33). At this time, even if the pushing force is released, the swing lever ( 30) and the engaged projection (4) do not have to be re-engaged. In the above embodiment, the engaging rib (44) is formed only on the one side wall (43), but the pair of engaging protrusions (5) is formed.
When both of the side walls (43) and (43) can be retracted and biased in the protruding direction, the engaging ribs (44) may be formed on each of the side walls (43) and (43). Also, the engaging protrusion (5)
Other forms can be adopted as long as the engagement rib (44) and the engagement rib (44) are engaged in a one-way manner. Further, in this embodiment, the hanging piece (35) is made to project from the lower surface of the front end of the lid (2), but it is made to project from the front end surface of the lid (2) and bent downward. Raised part (12) in the void (41)
It may be formed at the rear end of the. At this time, as shown in FIG. 5, the hanging piece (35) may be bent and drooped from the front of the swing fulcrum (36). As long as the operating part (33) can apply a pressing force to the horizontal piece (34), the operating part (33) and the horizontal piece (34) can be separated as shown in the figure.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of an embodiment of the present invention.

FIG. 2 is a perspective view of a swing lever (30) and an engaged projection (4).

FIG. 3 is an explanatory view of a mounting structure of an engagement protrusion (5).

FIG. 4 is a cross-sectional view of the lid body (2) in a closed state.

FIG. 5 is a cross-sectional view of the essential parts of another embodiment.

FIG. 6 is an explanatory diagram of the prior art.

[Explanation of symbols]

 (1) ... Instrument body (2) ... Lid body (3) ... Engaging body (30) ... Swing lever (34) ... Horizontal piece (35) ... Hanging piece ( 36) ... rocking fulcrum (4) ... engaged projection (41) ... void (42) ... inclined surface (43) ... side wall (44) ... engaging rib (5) ... Engagement protrusion

Claims (1)

[Scope of utility model registration request] 1. A lid (2) capped on the open end of the instrument body (1) is pivotally supported at the rear end of the instrument body (1) to be supported in a one-sided open state, and the lid ( 2) is always biased in the opening direction, and an engaging body (3) of the locking device is provided at the front end of the lid body (2), and the engaging body (3) is attached to the instrument body (1).
In a lid opening / closing device for a cooking utensil, which is adapted to engage with an engaged projection (4) arranged at the front upper end of the, the engaging body (3) equipped at the tip of the lid (2) is A swing lever (30) comprising a horizontal piece (34) and a hanging piece (35) hanging from one end of the horizontal piece (34), wherein the horizontal piece (34) swings up and down and the hanging piece (35) moves back and forth. In order to swing, the free end of the horizontal piece (34) is moved to the swing fulcrum (3
6) is located rearward with respect to 6) and the hanging piece (3
5) Energize the engaging body (3) so that the swinging member (3) swings rearward so that the hanging piece (35) projects from the front end of the lid body (2), and the hanging piece (35) is attached to the lower end of the hanging piece (35). The hanging piece (3
5) An engaging protrusion (5) protruding in a direction perpendicular to the swinging direction of the engaging member (5) is provided, and the engaging protrusion (5) is attached to the hanging piece (3).
5) is retractable in the protruding direction and is biased in the protruding direction, and the lower part of the hanging piece (35) is accommodated in the upper end of the instrument body (1) with the lid body (2) closed. Is formed, and an engaged projection (4) protruding horizontally from the wall surface of the empty space (41) is provided, and the cross section of this engaged projection (4) is such that the lower side is substantially horizontal. In addition, the front surface of the engaged projection (4) is a slanting surface (42) directed obliquely upward as a substantially triangular shape having an apex above.
When the lid (2) is opened and closed, the inclined surface (42) is positioned within the ascending and descending locus of the tip of the engaging protrusion (5), and the space (4)
The side wall (43) of (1) is provided with an engaging rib (44) extending downward at a predetermined distance from the lower end of the inclined surface (42), and the engaging rib (44) and the engaging protrusion are formed. (5) is set to a one-way engagement relationship in which the rearward movement of the engaging projection (5) is prevented when the hanging piece (35) moves in the horizontal direction due to the rocking of the rocking lever (30). A lid opening and closing device for cooking utensils.