JP2014226218A - Lid opening/closing state detection structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lid opening/closing state detection structure in which the detection operation of a detection part of lid opening/closing detection means performed by users etc. with fingers etc. in a lid opening state of a lid body can be suppressed well by a simple and easy configuration, and thereby the false detection due to a manual operation of the detection part can be suppressed well.SOLUTION: A lid opening/closing state detection structure B is configured such that: a lid body 3 for opening and closing the opening part is pivotally connected in a freely swingable manner to a body with an opening part by a hinge mechanism 13; and an opposing part in a lid-closing state between the body and the lid body 3 is provided with a detection part E of lid opening/closing detection means D for detecting an open or closed state of the lid body 3, and an operation part F for making the detection part E perform detection operation in a detection operation position. An obstruction part G is provided for obstructing the operation of the detection operation by an inapplicable operation body to a detection operation airspace P between the operation part F and the detection part E, when the lid body 3 is in a lid-opening state.

Description

  According to the present invention, a lid body that opens and closes an opening portion is pivotally connected to a main body having an opening portion by a hinge mechanism so that the main body and the lid body face each other in a closed state. The present invention relates to a lid open / closed state detection structure in which a detection unit of a lid open / close detection unit that detects an open / closed state of a body and an operation unit that detects the detection unit at a detection operation position are disposed.

  This type of lid open / closed state detection structure has a structure in which a lid body that opens and closes an opening provided in a main body is pivotably connected by a hinge mechanism, that is, a bread maker, a rice cooker, an electric kettle, and an electric kettle. In such a device, the lid opening / closing detection means detects the opening / closing state of the lid.

  For example, Patent Document 1 discloses a main body having an opening, a lid that is pivotally connected by a hinge mechanism so as to be able to open and close the opening, and a magnetic lid that detects an open / closed state of the lid. A bread making machine provided with an open / close detection means (an example of a lid open / close detection means) is disclosed. The magnetic lid opening / closing detection means includes a magnetic sensor (an example of a detection unit) in a portion on the main body side facing each other in the closed state of the main body and the lid body, and a permanent magnet (operation unit) in the portion on the lid body side. For example). As a result, when the lid is opened and closed, the magnetic sensor is detected by the magnetic force of the permanent magnet located at the detection operation position, that is, the magnetic sensor detects a change in the magnetic force, so that the lid is closed. It is comprised so that it can detect whether it is a lid open state.

  Further, in Patent Document 1, instead of a magnetic lid opening / closing detection means, a light emitting unit and a light receiving unit (an example of a detection unit), and a detection operation by reflecting light from the light emitting unit to the light receiving unit at a detection operation position An optical lid opening / closing detection means having an operation unit to be operated, or a microswitch mechanism (an example of a detection unit), and an operation unit that performs a detection operation by pressing or releasing the microswitch mechanism at a detection operation position. In addition, it is described that a configuration for detecting the open / closed state of the lid using a mechanical lid open / close detecting means or the like can be employed.

JP 2012-45290 A

In the bread maker described in Patent Document 1, in the configuration employing the magnetic lid opening / closing detection means, the permanent magnet is provided inside the outer shell of the lid, and the magnetic sensor is provided inside the outer shell of the main body. When the lid is in the open state, the user's finger or the like (an example of the operating body) is prevented from coming into direct contact with the permanent magnet or the magnetic sensor.
However, when the lid is in the open state, a user or the like approaches an object (an example of an operating body) such as a magnet that can apply a magnetic force to the magnetic sensor via the outline of the main body. In such a case, the magnetic sensor may detect a change in magnetic force due to the proximity of the object, and may erroneously detect that the lid is in the closed state.

Further, in the bread maker described in Patent Document 1, in the configuration employing the optical or mechanical lid opening / closing detection means, for example, a microswitch mechanism and an operation unit that presses or releases the microswitch mechanism, It is necessary to arrange in an exposed state outside the outer shell of the main body or the outer shell of the lid.
However, if the microswitch mechanism and the operation unit are arranged so as to be exposed outside the outer shell of the main body or outside the outer shell of the lid body, the user or the like may temporarily be instructed when the lid body is open. Etc. (an example of an operating body), when the microswitch mechanism is pressed or released, there is a risk that the microswitch mechanism detects the pressing or pressing release and erroneously detects that the lid is in the closed state. There is.

  As described above, when the lid open / close detection means erroneously detects that the lid is in the closed state even though the lid is in the opened state, in the opened state, for example, in the bread case of the bread maker. The operation of the equipment cannot be stopped such as the rotation of the kneading blade for kneading the bread-making material accommodated in the container and the heating operation of the heating mechanism, and an improvement is desired from the viewpoint of improving safety.

  The present invention has been made in view of the above-described actual situation, and the main problem is that when the lid is in the open state, the user or the like detects the detection unit of the lid open / close detection means with a finger or the like. The object of the present invention is to provide a lid open / closed state detection structure that can be satisfactorily suppressed with a simple configuration and that can appropriately suppress erroneous detection due to an artificial operation of the detection unit.

In order to achieve the above object, a lid opening / closing state detection structure according to the present invention includes a main body having an opening, and a lid for opening / closing the opening is pivotally connected by a hinge mechanism so as to be swingable. A detection unit of a lid open / close detection means for detecting the open / closed state of the lid and an operation unit for detecting the detection unit at a detection operation position are disposed in a portion facing each other in the closed state with the lid. The lid open / closed state detection structure is characterized by the following:
When the lid body is in the open state, there is a baffle portion that obstructs the detection operation operation by the non-target operation body to the detection operation airspace between the operation section and the detection section.

According to the above characteristic configuration, the lid body swings so that the opening of the main body can be freely opened and closed, and the open / closed state of the lid body is detected at a portion where the main body and the lid body face each other in the closed state. Since the detection unit of the lid opening / closing detection means and the operation unit for detecting the detection unit at the detection operation position are provided, the detection unit and the operation unit are in a closed state where the lid closes the opening of the main body. And the operation unit is positioned at the detection operation position, the operation unit detects the detection unit, and the detection unit can detect that the lid is in the closed state. .
On the other hand, in the open state where the lid opens the opening of the main body, the detection unit and the operation unit are relatively separated from each other, and the operation unit is in a non-detection operation position (a position where the detection unit is not detected and operated (detection operation) By being located at a position other than the position)), it is possible to detect that the lid is not in the closed state (in the open state) by the detection unit.

  In addition, when at least the lid is in the open state, a detection operation airspace is formed between the operation unit and the detection unit, and a non-target operation body (of the lid opening / closing detection means to be detected) is detected in the detection operation airspace. It is an object other than the action part, for example, a hindrance part that hinders the intrusion of the user's finger or the like and obstructs the detection action operation on the detection part, so that a non-target action object enters the detection action airspace. Can be satisfactorily suppressed, and the detection operation operation of the detection unit by the operating body via the detection operation airspace can be satisfactorily suppressed.

  Therefore, when the lid is in the open state, it is possible to satisfactorily suppress the detection operation of the detection unit of the lid opening / closing detection means by a finger or the like with a simple configuration, and to suppress erroneous detection due to human operation of the detection unit. It was possible to provide a lid open / closed state detection structure that can be used.

  According to a further feature of the lid open / closed state detection structure according to the present invention, the baffle is switched to a baffle position protruding in the detection operation airspace in the open state in accordance with the opening / closing operation of the lid. In the closed state, the position is switched to the baffle release position retracted from the detection operation airspace.

According to the above characteristic configuration, when the lid swings between the open state and the closed state, an operating body such as a user's finger or the like enters the detection operation air space and operates the detection unit for the detection operation. When it is necessary to suppress (open cover state), the baffle part is positioned at the baffle position that protrudes into the detection operation airspace, and the action body may enter the detection operation airspace (detection operation operation of the detection part) When the possibility is low (closed state), the baffle can be positioned at the baffle release position retracted from the detection operation airspace.
Thereby, the baffle part can be appropriately switched between the baffle position and the baffle release position using the lid opening / closing operation, and the convenience can be improved while suppressing the malfunction due to the human operation of the detection part. it can.

  According to still another feature of the lid open / closed state detection structure according to the present invention, the baffle portion protrudes into the detection operation airspace even in an open / closed state between the closed state and the open state of the lid. It is the point which is the structure maintained in the obstructive position.

  According to the above characteristic configuration, the state of the cover is changed from the closed state of the lid where the operation unit is located at the detection operation position to the open state of the lid where the operation unit is located at the non-detection operation position. The detector is kept in the obstructing position where it protrudes into the detection airspace, so even if the lid is open (opening and closing between the lid closed state and the lid open state), the detector will malfunction due to human operation. Can be suppressed.

According to a further feature of the lid open / close state detection structure according to the present invention, the detection unit is provided in the main body, the operation unit and the baffle unit are provided in the lid,
The operating portion and the baffle portion are positioned at the detection operation position in the closed state with respect to the rotating body that rotates integrally with the lid body around the pivot axis of the hinge mechanism. In addition, the baffle portion is positioned at a baffle release position that has been retracted from the detection operation airspace, and the operation portion has been retracted from the detection operation position in accordance with the swing from the closed state to the open state. It exists in the point which is provided in the arrangement | positioning relationship in which it is located in a detection operation position and the said baffle part is switched to the baffle position protruding in the said detection operation | movement airspace.

According to the above characteristic configuration, the detection unit is provided in the main body, the operation unit and the baffle unit are provided in the lid body, and are provided in the rotating body that rotates integrally with the lid body. When swinging around the swing axis of the hinge mechanism so as to open and close the opening, the operating portion and the baffle provided on the rotating body also rotate together with the lid.
In addition, when the lid is in the closed state, the operating portion is located at the detection operation position, the baffle portion is located at the baffle release position retracted from the detection operation airspace, and swinging from the closed state to the open state is performed. Accordingly, the operation unit and the baffle unit are provided on the rotating body in such a positional relationship that the operation unit is positioned at the non-detection operation position retracted from the detection operation position and the baffle unit is switched to the baffle position protruding to the detection operation airspace side. It has been.

  Accordingly, the rotating body provided with the baffle part and the action part rotates integrally with the swinging movement of the lid, and the action part is detected and non-detected by using the lid opening / closing operation. Can be switched appropriately between the baffle position and the baffle release position, and the convenience can be further improved while further suppressing malfunctions due to human operation of the detection section. .

According to a further feature of the lid opening / closing state detection structure according to the present invention, the detection unit includes a detection switch and a detection operation rod for operating the detection switch.
An upper end portion of the detection actuating rod is disposed in an exposed state at a peripheral edge of the opening of the main body at a position corresponding to the rotating body, and the upper end portion of the detection actuating rod is in the closed state. Is formed by a pressing projection formed on the rotating body in a state where the detection operation is performed by pushing down the lower side, and the baffle is configured to move from the closed state to the open state in the swinging state. It is in the point comprised by the circular-arc-shaped baffle plate part formed in the said rotary body continuously to the said press protrusion part in a non-contact state or a contact state with a part.

According to the above characteristic configuration, the rotating body that rotates integrally with the lid includes the pressing projection as the operating portion and the arc-shaped baffle plate portion that is formed continuously from the pressing projection, The pressing projection is configured to push down the upper end of the detection actuating rod that operates the detection switch in the closed state to perform the detection operation, and the baffle plate swings from the closed state to the open state. Is configured to be in a non-contact state or a contact state with the upper end portion of the detection operating rod.
Thereby, in the closed state with the swinging of the lid, the pressing projection can push the upper end of the detection operation rod and operate the detection switch, and the baffle plate is retracted from the detection operation airspace. Located in the baffle release position. In the open state, the pressing protrusion can release the upper end of the detection operation rod and release the detection switch, and the baffle plate is positioned at the baffle position protruding into the detection operation airspace. To do. In particular, in the open state, a predetermined distance can be maintained between the arc portion of the baffle plate portion and the upper end portion of the detection operating rod with the baffle plate portion positioned at the baffle position. By setting the interval to zero or a width that does not allow a user's finger or the like (operating body) to enter, it is possible to further suppress the upper end of the detection operating rod from being pushed by the user's finger or the like. .
Therefore, it is possible to further improve convenience while further suppressing malfunction caused by human operation of the detection unit.

  A further characteristic configuration of the lid open / close state detection structure according to the present invention is that an upper end portion of the detection actuating rod is disposed in a concave portion that opens upward on the periphery of the opening of the main body.

  According to the above characteristic configuration, the upper end portion of the detection actuation rod is disposed in the recess that opens upward at the periphery of the opening of the main body, so that the upper end portion of the detection actuation rod projects beyond the recess. In addition, the outer peripheral surface of the upper end portion of the detection actuating rod can be surrounded by the inner peripheral wall portion that forms the recess. Thereby, it can suppress favorably that operation bodies, such as a user's fingers, contact the upper end part of a detection actuating rod, and can control malfunctioning of a detection switch favorably.

A further characteristic configuration of the lid open / close state detection structure according to the present invention is arranged such that an upper end portion of the detection actuating rod is biased to the opening side of the main body with respect to the swing axis of the hinge mechanism,
The pressing protrusion is located at the detection operation position biased toward the opening of the main body with respect to the swing axis of the hinge mechanism in the closed state.

According to the above characteristic configuration, when the lid swings around the swing axis and swings from the open state to the closed state, the detection operation is biased toward the opening side of the main body from the swing axis. Similarly, the pressing projection located at the position abuts on the upper end of the detection actuating rod located at a position biased toward the opening side of the main body.
As a result, the pressing protrusion comes into contact with the upper end of the detection actuating rod in a state where the ratio of the vertical component, which is the moving direction of the detection actuating rod, is larger than the tangential component of the circumference concentric with the pivot axis. The upper end portion of the detection actuating rod can be pushed downward, and the operation of pushing the upper end portion of the detection actuating rod by the pressing protrusion can be reliably performed in a stable state.

  Further characteristic configuration of the lid open / closed state detection structure according to the present invention, the main body is provided with a casing that houses the inner container through the opening, and an outer portion that covers the outside of the casing, At least a part of the detection part is in a rear side space corresponding to a lower part of the hinge mechanism in a main body space between the outer side surface of the side wall part of the casing and the inner side surface of the side wall part of the outer shell part. It is in the point where it is arranged.

  According to the above characteristic configuration, the main body space existing between the outer side surface of the side wall portion of the casing and the inner side surface of the side wall portion of the outer shell portion is spatially expanded along with the formation of the hinge mechanism. By arranging at least a part of the detection unit of the lid open / close detection means at a position below the hinge mechanism, the detection unit having a relatively large volume is reasonably rational while effectively utilizing the already formed space. Can be assembled.

Perspective view showing the appearance of the bread maker Longitudinal side view of bread machine Cross section of bread machine Perspective view of the upper part of the bread maker Enlarged vertical side view of the upper part of the bread maker with the lid swinging Explanatory drawing which shows operation | movement of the detection part and operation | movement part of a lid | cover opening / closing detection means. Enlarged vertical side view of the upper part of the bread maker in a state where the lid according to another embodiment is swung Enlarged vertical side view of the upper part of the bread maker in a state where the lid according to another embodiment is swung

Hereinafter, an embodiment in which the lid open / close state detection structure B of the present invention is applied to a bread maker will be described with reference to the drawings.
As shown in FIGS. 1 to 4, the bread maker includes a bottomed cylindrical bread case (an example of an inner container) 1 that accommodates a bread-making material (not shown) inside, and an opening 4. A body A having a bottomed cylindrical casing C for housing the pan case 1 inside and a housing 2 (an example of an outer portion) that covers the outside of the casing C, and a lid that can freely open and close the opening 4 of the casing C A body 3, lid opening / closing detection means D for detecting the opening / closing state of the lid 3, an electric heater (an example of a heating mechanism) 6 provided in a heating chamber 5 formed by the casing C and the lid 3, And a control unit 7 for controlling the operation of the electric heater 6 and the like.

  The lid opening / closing detection means D is provided with a detection unit E that detects the open / closed state of the lid 3 and an operation unit F that detects the detection unit E at the detection operation position. When in the open state, a baffle part G is provided that obstructs a detection operation operation by a non-target operation body (not shown) to the detection operation airspace P between the operation unit F and the detection unit E.

  The housing 2 has a generally rectangular shape that is slightly elongated in the front-rear direction in plan view, and is formed in a bottomed box shape having an open top and a bottom wall portion 2a and a side wall portion 2b. At a substantially central position in the front-rear direction and the left-right direction in the housing 2, a bottomed cylindrical casing C having a generally rectangular shape slightly longer in the front-rear direction and having an opening 4 at the top is provided.

  A main body space S is formed between the outer surfaces of the bottom wall portion C1 and the side wall portion C2 of the casing C and the opposing surfaces of the inner side surfaces of the bottom wall portion 2a and the side wall portion 2b of the housing 2, and this main body space is formed. The main part of S is a front side space 8 formed on the front side (left side in FIG. 2) of the casing C, a rear side space 9 formed on the rear side (right side in FIG. 2) of the casing C, and the front side thereof. It is comprised from the transmission part accommodation space 10 connected to the lower side of the side space 8 and the back side space 9. As shown in FIG.

  As shown in FIGS. 1 and 2, an operation unit 11 and a display unit 12 are provided on the front side of the housing 2. The operation unit 11 has a timer for making a reservation to complete bread making at a specified baking time, in addition to an operation key for instructing the start and stop of the bread machine (including start and stop of timer reservation). A reservation key, a time adjustment key, a cancel key, a course selection key for selecting a baking course, and the like are provided. The display unit 12 is provided with a liquid crystal panel, and is configured to display the contents instructed by the operation unit 11, the current operating state of the bread maker (for example, the selected baking course), and the like. Yes.

In the upper part of the housing 2, an opening is formed on the rear side of the operation unit 11 and the display unit 12, and the hinge base part protrudes upward at the center in the left-right direction of the rear edge 2 </ b> A of the opening. 2C is formed (see FIG. 4). In the hinge base 2C, a notch 2D having a predetermined width is formed at a position slightly deviated to the right from the central part in the left-right direction (see FIG. 4), and located at the lower part of the part where the notch 2D is formed. The rear edge 2A is formed in a circular arc shape so as to be depressed downward (see FIG. 6).
Further, in the rear edge portion 2A, on the front side (left side in FIGS. 2 and 5) from the location where the hinge base portion 2C is provided, a location (notch 2D is slightly displaced from the central portion in the left-right direction to the right side). An insertion hole 2 </ b> E through which an upper end portion 51 a of a detection actuating rod 51 described later is inserted is formed at a location corresponding to the formed location (see FIGS. 5 and 6).

  In the upper part of the housing 2, the hinge base part 2 </ b> C is disposed further rearward than the hinge base part 2 </ b> C provided in the rear edge part 2 </ b> A of the opening, that is, at the rear side end part of the upper part of the housing 2. A stepped portion 2B is formed as a handle receiving portion that is recessed below the rear edge portion 2A. The step portion 2B is formed at the rear end portion of the housing 2 over the entire width of the main body A in the left-right direction (the front and back direction in FIG. 2).

  A handle 14 formed in a substantially U shape is provided on the upper portion of the housing 2. Specifically, pivot shafts (not shown) formed to protrude inward from both ends 14a, 14a of the substantially U-shaped handle 14 are left and right side edges at the top of the housing 2. The handle 14 is configured to be rotatable around the pivot shaft portion by being inserted in a through-hole (not shown) for attaching the handle in a state where it is prevented from coming off.

  By operating the handle 14 in a horizontal position, the central gripping portion 14b of the handle 14 can be placed on the stepped portion 2B functioning as a handle receiving portion formed on the upper portion of the housing 2. In addition, the above-mentioned back side space 9 will be located in the inside of the main body A on the lower side of the hinge mechanism 13 and the stepped portion 2B.

  The lid 3 is formed in a substantially inverted U shape in a longitudinal sectional view, and as described above, the hinge mechanism 13 provided at the rear edge portion 2A of the opening of the housing 2 is used in the left-right direction of the casing C (in FIG. 2). The opening 4 of the casing C is configured to be openable and closable by swinging around the swing axis 13a along the front and back direction of the drawing. That is, the lid 3 is configured to be swingable between a closed state in which the opening 4 of the casing C is closed and an open state in which the lid 3 is opened around the swing axis 13a.

As shown in FIGS. 2 and 5, the lid 3 includes an outer lid 3A disposed at the upper portion, a heat shield plate 3B disposed at the lower portion, and the outer lid 3A and the heat shield plate 3B. An inner lid 3C is provided, and the opening 4 of the casing C is closed by the heat shield plate 3B, and the heating chamber 5 is formed by the heat shield plate 3B and the casing C.
As shown in FIGS. 1 and 2, a steam port 24 that communicates the heating chamber 5 and the outside is provided at the rear end portion of the upper surface of the lid 3. A fitting recess 3D for fitting the hinge base portion 2C of the housing 2 is formed at the center in the left-right direction.

Accordingly, as shown in FIGS. 4, 5, and 6, the hinge base 2 </ b> C and the lid 3 are fitted in a state in which the fitting recess 3 </ b> D of the lid 3 is fitted to the hinge base 2 </ b> C of the housing 2. By inserting the oscillating shaft core 13a through through holes (not shown) formed in the respective side portions of the recess 3D, the lid body 3 extends in the left-right direction with respect to the hinge base 2C (housing 2). Further, it is supported so as to be swingable around the swing axis 13a.
That is, the hinge base 2D, the fitting recess 3D, and the swing axis 13a function as the hinge mechanism 13. The hinge mechanism 13 is disposed on the rear edge 2A of the upper portion of the housing 2, and the lid 3 is attached to the main body A. It will be comprised so that it can rock | fluctuate around the rocking | fluctuation shaft core 13a along the left-right direction (paper front-back direction of FIG. 2). By opening the lid 3, the opening of the housing 2 and the opening 4 of the casing C are opened and closed. That is, the lid 3 that opens and closes the opening is pivotally connected to the main body A provided with the opening by the hinge mechanism 13.

  As shown in FIGS. 2, 5, and 6, a substantially circular plate-shaped rotating body 40 is formed integrally with the inner lid 3 </ b> C in the lid 3 in a longitudinal sectional view. The rotating body 40 is formed in the notch 2D of the hinge base 2C in a state in which the fitting recess 3D of the lid 3 is fitted to the hinge base 2C of the housing 2 so as to be swingable around the swing axis 13a. (Refer to FIG. 4). The rotating body 40 located in the notch 2D is inserted into a through hole (not shown) in which the swing shaft core 13a is formed through the central portion of the rotating body 40, and the rotating body 40 is a lid body. 3 is configured to be swingable integrally.

Specifically, as shown in FIGS. 5 and 6, the outer peripheral portion of the rotating body 40 has an arcuate baffle plate portion 41 (an example of the baffle portion G) and a radially outer side than the baffle plate portion 41. A pressing projection 42 (an example of the operation unit F) protruding to the side is provided.
The arc-shaped baffle plate portion 41 (about 110 degrees in the central angle) is an arc centered on the swing axis 13a, and is formed concentrically with the arc formed on the upper surface of the rear edge portion 2A. When the lid 3 is in the closed state, the arc-shaped baffle plate portion 41 is configured to be positioned on the lower surface side of the rotating body 40 so as to face the upper surface of the rear edge portion 2A.
The pressing protrusion 42 is continuous with the front end (not shown) of both ends of the baffle plate 41 on the arc, and protrudes in a substantially rod shape radially outward from the front end. It is formed as follows. Further, when the lid 3 is in the closed position, the pressing protrusion 42 is configured to be positioned at a detection operation position H where a detection operation rod 51 (described later) is pushed downward to perform a detection operation. (See FIG. 6A).
That is, the pressing protrusion 42 is positioned at the detection operation position H that is biased toward the opening side (front side) of the housing 2 with respect to the swing axis 13a of the hinge mechanism 13 in the closed state.

  Accordingly, as shown in FIGS. 6A to 6C, when the lid 3 swings around the swing axis 13 a, the pressing projection is generated when the lid 3 closes the opening 4 of the casing C. The part 42 is located at the detection operation position H, the baffle plate part 41 is located at the baffle release position (not shown) retracted from the detection operation airspace P, and with the swing from the closed state to the open state Thus, the pressing protrusion 42 is positioned at a non-detection operation position (not shown) retracted from the detection operation position H and the baffle plate portion 41 is switched to a baffle position (not shown) projecting into the detection operation airspace P. Thus, the baffle plate portion 41 and the pressing projection portion 42 are provided on the rotating body 40. That is, the baffle plate portion 41 is configured to be maintained at the baffle position that protrudes into the detection operation airspace P even when the lid 3 is in the middle of opening and closing between the closed state and the open state.

  As shown in FIGS. 2 to 5, the casing C is formed in a bottomed cylindrical shape, is a generally rectangular plate shape that is slightly long in the front-rear direction in plan view, and has a circular opening at a substantially central portion. The bottom wall portion C1 and a side wall portion C2 that is formed in a generally rectangular rectangular tube shape and integrally extend upward from the outer peripheral edge portion of the bottom wall portion C1 are configured. The side wall portion C2 extends upward integrally from the outer peripheral edge portion of the bottom wall portion C1, and has an inner side wall portion (not shown) having rounded corners in plan view, and an outer side of the inner side wall portion. In a state of covering, it is fixed to the inner side wall part, and has a double wall structure with an outer side wall part (not shown) whose corners are more angular than the inner side wall part in plan view.

  Further, as shown in FIGS. 5 and 6, a rectangular frame body 25 that connects the upper ends of the inner side wall portion and the outer side wall portion of the side wall portion C <b> 2 is a peripheral edge of the opening portion of the side wall portion C <b> 2 and the housing 2. And the rear side portion of the frame body 25 covers the upper portion of the insertion hole 2E formed on the front side of the location where the hinge base portion 2C is formed in the rear edge portion 2A of the housing 2. It is configured as follows. An insertion hole 25a is formed in a portion corresponding to the insertion hole 2E in the rear side portion of the frame 25, and the periphery of the insertion hole 25a (front direction other than the rear, three directions in the left-right direction) A recess 25b is formed which is recessed downward from the upper surface. That is, the recessed part 25b opened toward the upper side at the periphery of the opening part of the housing 2 is formed.

  As shown in FIGS. 2 and 3, the lower portion of the bottom wall portion C <b> 1, i.e., the transmission portion accommodating space 10, has a generally rectangular shape slightly longer in the front-rear direction in a plan view. In addition, a base member 15 is provided which is formed in a longer front side and is formed in a substantially inverted U shape when viewed from the front (viewed in the front-rear direction). The base member 15 is fixed to the bottom wall portion 2a of the housing 2 with screws or the like, and has a circular opening at a substantially central portion.

  The circular opening portion of the bottom wall portion C1 of the casing C and the circular opening portion of the base member 15 receive the rotational drive force from the electric motor 16 and rotate on the base side driven shaft 17 and the bearings of the base side driven shaft 17. Part 18 is arranged. And the flange part 18a extended circularly outward in the radial direction in the upper part of the bearing part 18, the peripheral part of the circular opening part of the bottom wall part C1, and the peripheral part of the circular opening part of the base member Are fixed by screws 19 in the order described from above so as to overlap in the vertical direction.

A cylindrical pan case holding portion 18b is formed to protrude upward at a position radially inward from the portion fixed by the screw 19 in the flange portion 18a of the bearing portion 18. That is, the pan case holding portion 18b is formed to protrude upward from the bottom wall portion C1 of the casing C.
In addition, the cylindrical pan case holding portion 18b has a vertical groove extending downward from an upper end portion of the pan case holding portion 18b and a vertical groove at each of the diametrically opposed locations. An L-shaped groove 18c having a circumferential groove extending in the circumferential direction from the lower end is formed, and a pair of fixing pins 1E provided in the pan case 1 can be inserted and fixed. Has been. That is, the pair of L-shaped grooves 18c and the pair of fixing pins 1E have a bayonet structure for fixing and holding the pan case 1 to the pan case holding portion 18b.

  At the upper end portion of the base-side driven shaft 17 that is disposed so as to be relatively rotatable at the center portion of the bearing portion 18, a bottomed cylindrical connector 20 centering on the base-side driven shaft 17 is held in a cylindrical pan case. It is attached so as to rotate integrally with the base side driven shaft 17 in a state of being located on the radially inner side (inside) of the portion 18b.

  Further, in the transmission portion accommodating space 10, the base side driven is fixed to the electric motor 16 disposed on the front side of the bearing portion 18 and the lower end portion of the base side driven shaft 17 projecting downward from the bearing portion 18. A pulley 21 that is rotatable integrally with the shaft 17, a timing belt 22 wound around the drive shaft 16 a of the electric motor 16 and the pulley 21, and a power cord accommodating portion 23 provided on the rear side of the bearing portion 18. Is provided. Accordingly, the base driven shaft 17 and the connector 20 are configured to be rotationally driven by the electric motor 16.

The pan case 1 has a generally rectangular shape (an example of a rectangular shape) with rounded corners in the plan view and slightly elongated in the front-rear direction, and a bottomed cylindrical shape having an open top and a bottom wall portion 1a and a side wall portion 1b. Is formed. A handle 1 c is provided at the edge of the upper opening of the pan case 1. A cylindrical pan case base 1 </ b> A for mounting and supporting the pan case 1 is integrally attached to the lower surface of the central portion of the bottom wall portion 1 a of the pan case 1.
The pan case 1 is such that the pan case base 1A is fitted in the pan case holding portion 18b and the fixing pin 1E of the pan case base 1A is inserted into the L-shaped groove 18c of the pan case holding portion 18b. It is mounted in the casing C (in the heating chamber 5).
In other words, the bottom wall portion C1 of the casing C protrudes upward from the bottom wall portion C1 of the casing C, and holds the bottom wall portion 1a of the pan case 1 in the heating chamber 5 in a fixed state. A holding portion 18b is provided.

A pan case side driven shaft 1B is provided at the center of the bottom wall portion 1a of the pan case 1 in a state of being rotatably supported around an axis in the vertical direction. A disc-shaped driven side connector 1 </ b> C that rotates integrally with the pan case side driven shaft 1 </ b> B is fixed to a protruding shaft portion that protrudes downward from the bottom wall portion 1 a of the case 1.
The driven side connector 1 </ b> C is fitted into a pair of recesses facing each other of the connector 20, so that the driven side connector 1 </ b> C and the connector 20 are transmitted and connected.

  Further, a kneading blade 1D is detachably attached to a shaft portion of the pan case-side driven shaft 1B protruding upward from the bottom wall portion 1a in the pan case 1 (inside the pan case 1). In the pan case 1, the kneading blade 1D is configured to rotate integrally with the pan case side driven shaft 1B around the pan case side driven shaft 1B. Thereby, it is comprised so that the bread-making material in the bread case 1 can be knead | mixed.

  As shown in FIGS. 2 to 5, the lid opening / closing detection means D includes a detection unit E that detects the open / closed state of the lid 3 and an operation unit F that detects the detection unit E at the detection operation position. It has been.

  As shown in FIGS. 2 to 6, the detection unit E of the lid opening / closing detection means D includes at least one of a detection switch 50, a detection operation rod 51 that operates the detection switch 50, and the detection switch 50 and the detection operation rod 51. And a fixture 52 for attaching the portion (the portion other than the upper end portion 51 a of the detection operating rod 51) in the rear space 9.

The attachment 52 is integrally provided with an operating rod storage portion 52A for storing the detection operating rod 51 slidably in the vertical direction and a switch storage portion 52B for storing the detection switch 50, and the hinge mechanism 13 is provided in the casing C. It is being fixed to the side wall part C2 of the back side arrange | positioned.
The operating rod housing portion 52A is formed in a rectangular tube shape that is long in the vertical direction, the upper end portion opens upward, and the opened portion is inserted into the insertion hole 2E formed in the rear edge portion 2A from the lower side. 52 C of insertion holes are formed in a lower end part, and the annular guide part 52D which guides the sliding to the up-down direction of the detection actuating rod 51 is located in the radial direction slightly below the upper end part. Projected to the side.
The switch housing portion 52B is formed in a substantially box shape extending rearward from the lower portion of the working rod housing portion 52A in a state of communicating with the inside of the working rod housing portion 52A.

  The detection switch 50 includes a switch button 50a that protrudes and retreats in the vertical direction on the lower surface side of the detection switch 50, and the switch button 50a is configured to protrude downward in a natural state. The switch button 50a in the state of being retreated upward is projected and moved downward, and a detection operation can be performed and a detection signal can be transmitted to the control unit 7. The detection switch 50 is disposed at a position biased to the rear side of the detection operating rod 51, that is, in a position corresponding to the lower portion of the hinge mechanism 13 and the stepped portion (handle receiving portion) 2B in the rear side space 9.

  The detection actuating rod 51 is composed of a rod-like body extending in the vertical direction. A cylindrical upper end 51a is inserted into the insertion hole 25a of the frame 25 and the insertion hole 2E of the rear edge 2A, and the lower end 51b is inserted. It is configured to be slidable in the vertical direction while being inserted through the hole 52C and guided by the inner surface of the guide portion 52D. Further, the upper end portion 51 a of the detection actuating rod 51 is disposed at a position that is biased toward the opening side (front side) of the housing 2 with respect to the swing shaft core 13 a of the hinge mechanism 13. A sealing material (not shown) is attached to the inner diameter side of the insertion hole 2E.

  In addition, an extension plate 51c that extends greatly in the front-rear direction, particularly the rear side, is integrally formed slightly above the lower end 51b of the detection actuation rod 51, and is inserted into the lower end 51b of the detection actuation rod 51. The coil spring 51d thus compressed is compressed between the lower surface of the extending plate portion 51c and the bottom inner surface 52a of the operating rod housing portion 52A, and the detection operating rod 51 is moved upward via the lower surface of the extending plate portion 51c. Energized. Therefore, when the lid 3 is in the open state, the upper surface of the extension plate portion 51c pushes the switch button 50a of the detection switch 50 upward due to the upward biasing force of the coil spring 51d. The detection operating rod 51 is locked to the lower surface of the detection switch 50. In this open state, the upper end of the upper end portion 51a of the detection actuating rod 51 is positioned in the recess 25b in a state of being inserted through the insertion hole 25a of the frame 25. That is, the upper end of the upper end portion 51a of the detection actuating rod 51 of the detection unit E is disposed in an exposed state in the recess 25b of the rear edge portion 2A of the housing 2 at a lower position corresponding to the rotating body 40. Become.

  Therefore, in this embodiment, the main body A, the lid 3, the hinge mechanism 13, and the lid open / close detection means D function as the lid open / close state detection structure B.

  Next, the operations of the detection unit E, the operation unit F, and the baffle unit G when the lid 3 is swung around the swing axis 13a will be described with reference to FIGS. To do.

As shown in FIGS. 2, 5, and 6 (A), in the closed state in which the lid 3 closes the opening 4 of the casing C, the pressing protrusion 42 of the rotating body 40 is the upper end of the detection operating rod 51. The baffle plate portion 41 is located at a baffle release position where the baffle plate portion 41 is retracted from the detection operation airspace P.
That is, in a state where the baffle plate portion 41 is located at a position facing the upper surface of the rear edge portion 2A, the pressing projection portion 42 comes into contact with the upper end of the upper end portion 51a of the detection operation rod 51, and the detection operation rod 51 is moved downward. The state pushed to the side is maintained. As the detection actuating rod 51 is pushed downward, the coil spring 51d is compressed, and the upper surface of the extension plate portion 51c is separated downward with respect to the switch button 50a so that the switch button 50a is moved downward. To protrude.
Accordingly, the detection switch 50 is detected by the pressing protrusion 42 at the detection operation position H, and transmits a detection signal to the control unit 7 that the lid 3 is in the closed state.

Subsequently, as shown in FIG. 6B, when the lid body 3 is swung around the rocking shaft core 13a from the closed state to the open state, the rotating body 40 is also swung integrally. Similarly, the pressing protrusion 42 and the baffle plate 41 provided on the rotating body 40 also swing. Along with this, the detection operation rod 51 slides upward while the upper end of the upper end portion 51a of the detection operation rod 51 abuts against the pressing projection 42 by the biasing force of the coil spring 51d. This sliding is performed until the upper surface of the extension plate portion 51c of the detection detection rod 51 presses the switch button 50a upward, and the upper surface of the extension plate portion 51c contacts the detection switch 50. In this state, the upper end of the upper end 51a of the detection operation rod 51 and the pressing projection 42 are in contact with each other.
Accordingly, the detection switch 50 is released from the detection operation by the pressing protrusion 42 retracted to the non-detection operation position, and stops transmitting the detection signal to the control unit 7 that the lid 3 is in the closed state. That is, in the state shown in FIG. 6B, the lid 3 is in an open state, and the lid is in a closed state until just before this state.

Further, as shown in FIG. 6C, when the lid 3 is further swung around the rocking shaft core 13a, the pressing projection 42 is separated from the upper end of the upper end 51a of the detection operation rod 51, A detection operation airspace P is formed between the pressing protrusion 42 and the upper end.
However, since the arc-shaped baffle plate portion 41 is formed at a portion continuous with the pressing projection portion 42 of the rotating body 40, the pressing projection portion 42 and the upper end of the upper end portion 51a of the detection operation rod 51 are separated from each other. Even if the detection operation airspace P is formed, the baffle plate portion 41 is switched to the baffle position protruding in the detection operation airspace P as the rotating body 40 swings. Thereby, when at least the lid 3 is in the open state, an operating body other than the target to the detection operation airspace P (an object other than the pressing projection 42 of the lid opening / closing detection means D to be detected) A baffle plate portion 41 that hinders the intrusion of the user's finger or the like and obstructs the detection operation operation on the upper end of the upper end portion 51a of the detection operation rod 51. The detection operation operation of the artificial detection operation rod 51 by the operation body via the detection operation airspace P can be suppressed satisfactorily.

  In particular, since the baffle plate portion 41 is formed in an arc shape, the baffle plate portion 41 is in the baffle position when the lid is in the open state (even in the middle of opening and closing between the closed state and the open state). A predetermined distance (non-contact state) can be maintained between the circular arc part of the baffle plate part 41 and the upper end part 51a of the detection actuating rod 51 in the state of being located at the position of the user. It is possible to more reliably suppress the upper end portion 51a of the detection operating rod 51 from being pushed by a user's finger or the like.

[Another embodiment]
(A) In the above-described embodiment, the configuration in which the pressing protrusion 42 provided on the rotating body 40 is employed as the operation unit F of the lid opening / closing detection unit D has been described. However, the operation unit F has a detection unit at the detection operation position H. Any other configuration can be adopted as long as it can detect E well.
For example, as shown in FIGS. 7 and 8, an arc-shaped baffle plate portion 41 is provided on the outer peripheral portion of the rotating body 40, and a front side end portion (not shown) of both ends of the baffle plate portion 41 is provided. It is possible to employ a configuration in which a recessed portion 43 that is continuously recessed inward in the radial direction from the baffle plate portion 41 is provided, and the recessed portion 43 serves as the operating portion F.
In the case of this configuration, when the lid 3 swings around the swing axis 13a, the recessed portion 43 is in the detection operation position (not shown) in the closed state where the lid 3 closes the opening 4 of the casing C. The baffle plate portion 41 is located at a baffle release position (not shown) retracted from the detection operation air space (not shown), and the recessed portion 43 is moved with the swing from the closed state to the open state. Is located at a non-detection operation position (not shown) retracted from a detection operation position (not shown) and switched to a baffle position (not shown) where the baffle plate portion 41 protrudes into the detection operation airspace (not shown). Therefore, the baffle plate portion 41 and the recessed portion 43 are provided in the rotating body 40.

(B) In the above embodiment, the switch button 50a that protrudes downward from the lower surface of the detection switch 50 is configured to be pressed or released by the upper surface of the extension plate portion 51c of the detection operation rod 51. The controller 7 sends a detection signal that the lid body 3 is in a closed state with the upper surface of the exit plate portion 51c spaced downward from the switch button 50a and the switch button 50a protruding downward. Configured to send to. However, other configurations can be adopted as long as the detection unit can satisfactorily detect that the lid 3 is in the closed state or the open state.
For example, as shown in FIG. 7, when the detection switch 50 is closed, the lower surface of the extension plate portion 51c of the detection operation rod 51 is located above the switch button 50a protruding upward from the upper surface of the detection switch 50. The switch button 50a protrudes upward and is detected to be in the closed state. In the open state, the lower surface of the extension plate 51c presses the switch button 50a downward to open the cover. It can be set as the structure which detects that it is. In this case, the detection operation is performed when the switch button 50 a is released, and a detection signal indicating that the lid 3 is in the closed state is transmitted to the control unit 7.
For example, as shown in FIG. 8, when the detection switch 50 is closed, the switch button 50a protruding downward from the lower surface of the detection switch 50 is pressed upward by the upper surface of the extension plate portion 51c of the detection operating rod 51. Then, the closed state is detected, and in the opened state, the upper surface of the extension plate portion 51c is spaced downward with respect to the switch button 50a, and the switch button 50a protrudes downward. be able to. In this case, a detection operation is performed when the switch button 50 a is pressed, and a detection signal indicating that the lid 3 is in the closed state is transmitted to the control unit 7.

(C) In the above embodiment, the upper end portion 51a of the detection actuating rod 51 is disposed at a position that is biased to the opening side (front side) of the housing 2 relative to the swing axis 13a of the hinge mechanism 13, and the pressing protrusion (Example of the operation unit) 42 is configured to be positioned at the detection operation position H that is biased to the opening side (front side) of the housing 2 with respect to the swing axis 13a of the hinge mechanism 13 in the closed state. The position of the upper end 51a of the detection actuating rod 51 and the position of the pressing projection 42 in the closed state are biased to the rear side of the swing axis 13 of the hinge mechanism 13 as shown in FIG. It can also be set as the structure arrange | positioned, and as shown in FIG. 8, it can also be set as the structure arrange | positioned in the position right under the rocking | fluctuation shaft core 13a of the hinge mechanism 13. FIG.

(D) In the above embodiment, a predetermined gap is formed between the baffle plate 41 and the upper end of the upper end 51a of the detection operation rod 51 in the open state, but the gap is zero, that is, In the opened state, the baffle plate portion 41 and the upper end portion 51a of the detection operation rod 51 may be in contact with each other. Similarly, even when the lid 3 is in the middle of opening and closing between the closed state and the opened state, the gap is zero, that is, the baffle plate portion 41 and the upper end portion 51a of the detection operation rod 51 are at the upper end. It is good also as a structure to contact | abut.

(E) In the above-described embodiment, the rear portion of the detection unit E (detection switch 50) disposed in the rear space 9 of the main body space S is replaced by a step 2B (handle) formed on the upper surface of the rear end side of the housing 2. However, it can also be arranged at a position corresponding to the lower part of the hinge mechanism 13 (rear edge part 2A).

(F) In the above-described embodiment, the lid 3 is provided with the pressing protrusion 42 (an example of the operation part F) and the baffle plate part 41 (an example of the baffle part G), and the main body A has the detection switch 50 and the detection operation rod 51 ( An example of the detection unit E) is provided, but the detection unit E may be provided on the lid 3 and the operation unit F and the baffle unit G may be provided on the main body A.

(G) In the above embodiment, a mechanical lid opening / closing detection provided with the detection unit E having the detection switch 50 and the detection actuating rod 51 and the operation unit F having the pressing protrusion 42 as the lid opening / closing detection means D. The configuration of the means has been described. As the lid opening / closing detection means D, other mechanical lid opening / closing detection means, optical lid opening / closing detection means, and magnetic lid opening / closing detection means can be employed.

(H) In the above-described embodiment, the lid opening / closing state detection structure B is described as being provided in the bread maker, but the lid 3 that opens and closes the opening provided in the main body A can be swung by the hinge mechanism 13. As long as it is a device having a structure for pivotal connection, it can be applied to other devices. For example, it can be applied to devices such as rice cookers, electric pots, and electric kettles.

  Note that the configurations disclosed in the above-described embodiments (including other embodiments, the same applies hereinafter) can be applied in combination with the configurations disclosed in the other embodiments as long as no contradiction arises. The embodiments disclosed in this specification are exemplifications, and the embodiments of the present invention are not limited thereto, and can be appropriately modified without departing from the object of the present invention.

  As described above, when the lid is in the open state, it is possible to satisfactorily suppress the detection operation of the lid opening / closing detection means by a finger or the like with a simple configuration, and erroneous detection due to an artificial operation of the detection unit. It is possible to provide a lid open / closed state detection structure that can satisfactorily be suppressed.

A body B lid open / closed state detection structure C casing C1 bottom wall C2 side wall D lid open / close detection means E detection unit F operation unit G baffle unit H detection operation position S body space P detection operation airspace 2 housing (outer part)
2a Bottom wall 2b Side wall 3 Lid 4 Opening 5 Heating chamber 9 Back space 13 Hinge mechanism 13a Oscillating shaft core 25b Recess 40 Rotating body 41 Baffle plate 42 Pressing projection 50 Detection switch 50a Switch button (detection switch) )
51 Upper end of detection operation rod 51a

Claims (8)

A lid body that opens and closes the opening portion is pivotally connected to a main body having an opening portion by a hinge mechanism so that the main body and the lid body face each other in a closed state. A lid open / closed state detection structure in which a detection unit of a lid open / close detection means for detecting an open / closed state of the body and an operation unit for detecting the detection unit at a detection operation position are provided,
A lid open / closed state detection structure including a baffle portion that obstructs a detection operation operation by a non-target operation body to a detection operation airspace between the operation unit and the detection unit when the lid body is in an open state.   The baffle release position is switched to a baffle position projecting into the detection operation airspace in the open state, and the baffle release position retracted from the detection operation airspace in the closed state in accordance with the opening / closing operation of the lid. The lid open / closed state detection structure according to claim 1, wherein the lid open / close state detection structure is configured to be switched to.   3. The configuration according to claim 1, wherein the baffle is maintained at a baffle position that protrudes into the detection operation airspace even in an open / closed state between the closed state and the open state of the lid. The lid open / closed state detection structure described. The detection unit is provided in the main body, the operation unit and the baffle unit are provided in the lid,
The operating portion and the baffle portion are positioned at the detection operation position in the closed state with respect to the rotating body that rotates integrally with the lid body around the pivot axis of the hinge mechanism. In addition, the baffle portion is positioned at a baffle release position that has been retracted from the detection operation airspace, and the operation portion has been retracted from the detection operation position in accordance with the swing from the closed state to the open state. The lid open / close state detection structure according to any one of claims 1 to 3, wherein the lid opening / closing state detection structure is provided in an arrangement relationship in which the baffle portion is located at a detection operation position and is switched to a baffle position projecting into the detection operation airspace. The detection unit includes a detection switch and a detection operation rod that operates the detection switch,
An upper end portion of the detection actuating rod is disposed in an exposed state at a peripheral edge of the opening of the main body at a position corresponding to the rotating body, and the upper end portion of the detection actuating rod is in the closed state. Is formed by a pressing projection formed on the rotating body in a state where the detection operation is performed by pushing down the lower side, and the baffle is configured to move from the closed state to the open state in the swinging state. The lid open / close state detection structure according to claim 4, wherein the lid open / close state detection structure is configured by an arc-shaped baffle plate portion formed on the rotating body in a non-contact state or a contact state with the pressing portion.   The lid open / closed state detection structure according to claim 5, wherein an upper end portion of the detection operating rod is disposed in a concave portion that opens upward at a peripheral edge of the opening of the main body. The upper end portion of the detection actuating rod is disposed at a position biased toward the opening side of the main body with respect to the swing axis of the hinge mechanism,
The lid opening / closing state detection according to claim 5 or 6, wherein the pressing protrusion is located at the detection operation position biased toward the opening side of the main body with respect to the swing axis of the hinge mechanism in the lid closing state. Construction.   The main body includes a casing that houses an inner container therein through an opening, and an outer portion that covers an outer side of the casing, and at least a part of the detection unit is an outer surface of a side wall portion of the casing. The main body space between the wall and the inner side surface of the side wall portion of the outer shell portion is disposed in a rear side space corresponding to a lower portion of the hinge mechanism. Cover open / closed state detection structure.

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