JP2023121168A - Cooking device - Google Patents

Abstract

An object of the present invention is to provide a heating cooking device that makes it difficult to touch an arm constituting a link member and allows a placing part to be pulled out to a larger extent. [Solution] A door 3 is pivotally supported on a main body 2 having a firing chamber 15 inside and can open and close a front opening 14, and the opening/closing of the door 3 and the coming and going of a placing part 4 from the opening 14 are linked. The toaster oven 1 is a cooking device having a link mechanism 5, and the link mechanism 5 includes an arm 51 whose front end is swingably supported by the door 3 and a first rack 52 is formed on the rear side; A first pinion gear 53 meshes with the rack 52, and a second pinion gear 56 whose pitch circle rotates at a linear speed faster than the linear speed of the pitch circle of the first pinion gear 53 meshes with the second pinion gear 56. It has a second rack 57 and a tension coil spring 58 as a biasing member that biases the rear side of the arm 51 backward and toward the first pinion gear 53, and the second rack 57 is coupled to the mounting section 4. . [Selection diagram] Figure 3

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooking apparatus, such as a toaster oven, in which a food placing portion such as a gridiron protrudes from an opening of a main body when a door is opened.

Conventionally, this type of heat cooking apparatus includes a main body portion (corresponding to the main body of the present invention) having an opening formed in the front and a cooking chamber (corresponding to the baking chamber of the present invention) inside; An opening/closing door (corresponding to the door of the present invention) that opens and closes the opening of the main body, and a link that moves the cooking net (corresponding to the placement portion of the present invention) back and forth in conjunction with the opening and closing of the opening/closing door. A mechanism having a link member (corresponding to the arm of the present invention) as a mechanism is known (see, for example, Patent Document 1). In such a heat cooking apparatus, the front end of the link member is connected to the vicinity of the upper end of the opening/closing door, so that the cooking net can be largely pulled out forward in conjunction with the operation of opening the opening/closing door. .

JP 2017-116225 A

However, in such a heat cooking apparatus, if the amount of pull-out of the cooking net is to be increased, the front end of the link member needs to be connected to the vicinity of the upper end of the opening/closing door. When the opening/closing door is opened, the front end of the link member is positioned forward of the cooking net. I was afraid I might touch it. Further, the pull-out amount of the cooking net is substantially the same as the difference between the pull-out amount of the link member and the length of the link groove formed in the link member. It is not sufficient to place the food to be cooked in the deep part of the cooking net, and a structure for pulling out the cooking net to a greater extent has been desired. Furthermore, in the structure in which the cooking net is pulled out greatly, the utensil receiving base on which the cooking net is placed is located in the front part of the inner space of the main body. There was a problem that the instrument receiving stand was in the way and it was difficult to clean.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a heat cooking apparatus which solves the above problems, makes it difficult to touch the arm that constitutes the link member, allows the placement section to be pulled out to a greater extent, and allows the inside of the baking chamber to be easily cleaned. aim.

The heat cooking apparatus according to claim 1 of the present invention comprises a main body having an opening formed in the front and having a baking chamber inside, a door pivotally supported by the main body and capable of opening and closing the opening, In a heat cooking apparatus having a placing portion that appears and disappears from the opening as the door is opened and closed, and a link mechanism that interlocks the movement of the door and the motion of the placing portion, the link mechanism an arm swingably supported by the door and formed with a first rack on the rear side; a first pinion gear meshing with the first rack; a second pinion gear whose pitch circle rotates at a linear velocity faster than the linear velocity of the pitch circle of the pinion gear; a second rack that meshes with the second pinion gear; and an urging member that urges the first pinion gear side, and the second rack is coupled to the mounting portion.

Further, in the heat cooking apparatus according to claim 2 of the present invention, in claim 1, the arm is provided with a A non-forming portion of the first rack is provided.

According to claim 3 of the present invention, there is provided a heat cooking apparatus according to claim 1, wherein guide members extending in the front-rear direction are provided on both left and right walls of the baking chamber, respectively, and can be attached to and detached from the front of the guide members. guide receiving portions are provided on the left and right sides of the placing portion, respectively, and the arm can swing in the direction in which the first rack separates from the first pinion gear against the biasing force of the biasing member. As such, the arm is supported by the door.

Further, according to Claim 4 of the present invention, there is provided the cooking device according to Claim 1, wherein the second pinion gear is provided below the second rack.

In the heat cooking apparatus according to claim 1 of the present invention, with the configuration as described above, even if the support position of the front end of the arm in the door is provided near the pivot axis of the door, the first pinion gear By adjusting the ratio of the linear velocity of the outer peripheral portion of the second pinion gear to that of the second pinion gear, the amount of drawing of the placing portion can be maximized so that the food to be cooked can be stably placed. Therefore, the risk of touching the arm when opening the door can be reduced.

By providing the arm with a non-formed portion of the first rack so that the first rack engages with the first pinion gear when the door is pivoted by a predetermined angle, the door is opened from the start of opening. Since the mounting portion is not pulled forward until it pivots by a predetermined angle, it is possible to prevent the door from colliding with the mounting portion at the initial stage of opening the door.

Further, guide members extending in the front-rear direction are provided on the left and right walls of the baking chamber, respectively, and guide receiving portions that can be attached to and detached from the front of the guide members are provided on the left and right sides of the placement portion. The arm is supported by the door so that the arm can swing in a direction in which the first rack moves away from the first pinion gear against the urging force of the biasing member. is further pulled forward from the maximum protruding state, the first pinion gear rotates in conjunction with the second pinion gear and the second rack, but the engagement between the first rack and the first pinion gear temporarily becomes Since it is released and idles, the placement section can be removed from the main body. Therefore, the inside of the firing chamber can be easily cleaned.

Furthermore, since the second pinion gear is provided below the second rack, the second pinion gear does not get in the way when the food to be cooked is placed on the placing portion.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view of the heat cooking apparatus which shows one Embodiment of this invention. It is the perspective view which looked from the other direction in the state which removed one part. It is a perspective view of the state where a link mechanism was disassembled equally. It is the explanatory view which looked at the closed state from the outside similarly. It is the explanatory view which looked at the state where the door was opened by the angle A from the outside. It is the explanatory drawing which looked at the state which opened the angle B of the door similarly from the outside. It is the explanatory drawing which looked at the state which opened the door completely from the outside. It is an explanatory view of the closed state of the same as seen from the baking chamber side. It is an explanatory view of the state in which the door is opened at an angle A as viewed from the firing chamber side. It is an explanatory view of the state in which the door is opened at an angle B as viewed from the firing chamber side. It is the same explanatory drawing which looked at the state which opened the door completely from the baking chamber side.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 11. FIG. 1 is an oven toaster as a heat cooking apparatus of the present invention. This oven toaster 1 is configured by having a main body 2 , a door 3 , a placing section 4 and a link mechanism 5 .

The main body 2 includes an inner wall portion 11 , an outer wall portion 12 and a front wall portion 13 . The inner wall portion 11 is formed in a box shape having an opening 14 on the front side, and has a right side wall 11R and a left side wall 11L. A baking chamber 15 is formed in the inner wall portion 11 . Further, guide members 16R and 16L are attached horizontally at the same height to the inner surfaces of the right side wall 11R and the left side wall 11L, respectively. These guide members 16R and 16L are formed with grooves 17R and 17L in the longitudinal direction, respectively, and these grooves 17R and 17L face each other. Further, the groove portion 17R and the groove portion 17L are provided horizontally and in parallel. Therefore, the distance between the bottoms of the grooves 17R and 17L is slightly narrower than the distance between the right side wall 11R and the left side wall 11L. At the front ends of the grooves 17R and 17L, guiding portions 18R and 18L are formed so that the distance between the grooves 17R and 17L increases toward the front. The widths of the grooves 17R and 17L are constant except for the guiding portions 18R and 18L. Further, end walls 19 are formed at the rear ends of the grooves 17R and 17L to define the rear ends of the grooves 17R and 17L. Further, a bearing hole (not shown) is formed on the front side of the right side wall 11R and below the guide member 16R. The outer wall portion 12 covers the inner wall portion 11 from the outside, and the front side is opened like the inner wall portion 11 . Further, the front wall portion 13 is provided so as to connect the front opening portion 14 of the inner wall portion 11 and the open front side of the outer wall portion 12 . Further, on the right side of the front wall portion, a vertically elongated through groove 20 is formed through which an arm 51 of the link mechanism 5, which will be described later, is passed. Furthermore, main body side bearing portions 21R and 21L are provided on the right and left sides of the lower front side of the main body 2, respectively.

The door 3 includes a door main body 31, a handle 32 provided on the upper part of the door main body 31, door-side bearings 33R and 33L provided on the lower part of the door main body 31, and a right side of the door main body 31. and an arm bearing portion 34 provided on the firing chamber 15 side. The door side bearing portions 33R and 33L are provided corresponding to the main body side bearing portions 21R and 21L, and are pivotally connected by pivots 35R and 35L. The door 3 is thereby pivotally supported with respect to the body 2 .

The mounting section 4 includes a mounting section main body 41 and a gridiron 42 detachably mounted on the mounting section main body 41 . The mounting portion main body 41 is formed of a metal wire in a substantially rectangular shape, and is provided with guide receiving portions 43R and 43L projecting to the left and right on the inner side of the mounting portion main body 41, respectively. The vertical dimension of these guide receiving portions 43R and 43L is slightly smaller than the vertical width of the groove portions 17R and 17L formed in the guide members 16R and 16L. The distance between the right end of the guide member 43R and the left end of the guide member 43L is slightly smaller than the distance between the bottoms of the grooves 17R and 17L, and is such that it does not come off downward from the grooves 17R and 17L. Formed to size. That is, the distance between the right end of the guide member 43R and the left end of the guide member 43L is smaller than the distance between the right side wall 11R and the left side wall 11L, in other words, the width of the opening . Furthermore, a second rack 57 of the link mechanism 5, which will be described later, is coupled to the lower portion of the right end portion of the mounting portion main body 41 so as to extend in the front-rear direction.

The link mechanism 5 includes an arm 51 formed with a first rack 52, a first pinion gear 53, a large-diameter gear 54, a small-diameter gear 55, a second pinion gear 56, a second rack 57, and a It is composed of a tension coil spring 58 as a force member and a stopper 59 . The arm 51, the first pinion gear 53, the large-diameter gear 54, the small-diameter gear 55, the tension coil spring 58, and the stopper 59 are provided on the outer surface side of the right side wall 11R. On the other hand, the second pinion gear 56 is provided on the inner surface side of the right side wall 11R. Further, the second rack 57 is coupled to the placement section main body 41 that constitutes the placement section 4 provided in the firing chamber 15, as described above.

The arm 51 has a bearing hole 60 formed at its front end and a hooking hole 61 formed at its rear end. By connecting the bearing hole 60 of the arm 51 and the arm bearing portion 34 of the door 3 using a swing shaft 62, the arm 51 is supported swingably with respect to the door 3. As shown in FIG. On the other hand, the hook 58A on the one end side of the tension coil spring 58 is hooked in the hook hole 61 of the arm 51. As shown in FIG. A hook 58B on the other end side of the tension coil spring 58 is hooked on the upper rear portion of the main body 2 . As a result, the rear end of the arm 51 is urged upward and rearward. Also, the first rack 52 is formed on the rear side of the upper side of the arm 51 . In addition, in the upper side portion of the arm 51 , a non-forming portion 63 of the first rack 52 is formed between the front end portion and the first rack 52 . Furthermore, a notch 64 is formed near the center of the lower side of the arm 51 . The notch 64 has one side edge 64A cut obliquely to the length direction of the arm 51 and the other side edge 64B cut substantially perpendicular to the length direction of the arm 51. As shown in FIG. Then, the opening angle of the door 3 is limited to the angle C by the contact of the other end side edge 64B with the stopper 59. As shown in FIG.

The first pinion gear 53 and the large-diameter gear 54 are attached to a shaft portion 65 provided on the outer surface side of the right side wall 11R so as to rotate coaxially and integrally. The first pinion gear 53 and the large-diameter gear 54 may be integrally formed. The first pinion gear 53 is positioned above the arm 51 . Therefore, the arm 51 is pressed against the first pinion gear 53 by urging the rear end side of the arm 51 upward by the tension coil spring 58 . A pair of guide discs 66 , 66 having a larger diameter than the first pinion gear 53 are provided on both sides of the first pinion gear 53 in the axial direction. By positioning the arm 51 between these guide discs 66, 66, the first rack 52 and the first pinion gear 53 can be prevented from being displaced. The first rack 52 and the first pinion gear 53 mesh with each other when the door 3 is opened.

The small-diameter gear 55 is always meshed with the large-diameter gear 54 and has a diameter smaller than that of the large-diameter gear 54 . That is, the large-diameter gear 54 and the small-diameter gear 55 constitute a speed increasing mechanism. A pair of guide discs 67 , 67 having a larger diameter than the small-diameter gear 55 are provided on both sides of the small-diameter gear 55 in the axial direction. By positioning the large-diameter gear 54 between these guide discs 67, 67, the large-diameter gear 54 and the small-diameter gear 55 can be prevented from being displaced. The small-diameter gear 55 is fixed to the outer end of the rotary shaft 68 fixed to the bearing hole (not shown).

The second pinion gear 56 is fixed to the inner end of the pivot shaft 68 . Thereby, the second pinion gear 56 is configured to rotate coaxially and integrally with the small diameter gear 55 . Also, the second pinion gear 56 is always meshed with the second rack 57 . Furthermore, a pair of guide discs 69, 69 having a larger diameter than the second pinion gear 56 are provided on both sides of the second pinion gear 56 in the axial direction. By positioning the second rack 57 between these guide discs 69, 69, the second rack 57 and the second pinion gear 56 can be prevented from being displaced.

The ratio of the distance L by which the first pinion gear 53 rotates in the circumferential direction of its pitch circle to the distance M by which the second pinion gear 56 rotates in the circumferential direction of its pitch circle, that is, the gear ratio G is R1 for the pitch circle radius of the first pinion gear 53, R2 for the pitch circle radius for the large diameter gear 54, R3 for the pitch circle radius for the small diameter gear 55, and R3 for the pitch circle of the second pinion gear 56. Assuming that the radius of the circle is R4, it is represented by the following formula. To simplify the calculation, backlash between gears is not taken into account.
G=(R2/R1)×(R4/R3)
In this embodiment, since the pitches of the gears are equal, it can be represented by the ratio of the number of teeth. That is, the gear ratio G is defined by T1 for the number of teeth of the first pinion gear 53, T2 for the number of teeth for the large diameter gear 54, T3 for the number of teeth for the small diameter gear 55, and T3 for the number of teeth of the second pinion gear 56. T4 is represented by the following equation.
G=(T2/T1)×(T4/T3)
In this embodiment, T1=T3=T4=26, as shown in FIGS. Also, there is a portion hidden by the arm 51, and T2=90. Therefore, in this embodiment, the gear ratio G≈3.46. This means that the second pinion gear 56 rotates at a linear velocity approximately 3.46 times that of the first pinion gear 53 . Further, when the first pinion gear 53 rotates in the circumferential direction of the pitch circle by a distance L, the second pinion gear 56 rotates in the circumferential direction of the pitch circle by a distance of about 3.46L. means.

In addition, in this embodiment, for the sake of simplification of explanation, the explanation of the heater, operation part, etc. provided in the toaster oven 1 will be omitted.

Next, the operation of this embodiment will be described. 4 and 8, the first rack 52 and the first pinion gear 53 are not meshed with each other, and the teeth of the first pinion gear 53 are in contact with the non-formed portion 63 of the first rack 52. ing. From this state, the user grips the handle 32 and pulls it forward. As a result, the door 3 pivots around the pivots 35R and 35L. As the door 3 pivots, the arm 51 of the link mechanism 5 is also pulled forward. At this time, the arm 51 swings around the swing shaft 62 . Further, as described above, the rear end side of the arm 51 is urged rearward and upward by the tension coil spring 58 , so the arm 51 continues to be pressed against the teeth of the first pinion gear 53 . Further, the guide discs 66, 66 prevent the arm 51 from coming off the teeth of the first pinion gear 53. Then, the teeth of the first pinion gear 53 do not mesh with the first rack 52 until the door 3 is pivoted by an angle A to the state shown in FIGS. It continues to abut against the non-formed portion 63 due to the urging force. That is, the first pinion gear 53, the large diameter gear 54, the small diameter gear 55 and the second pinion gear 56 do not rotate until the door 3 pivots by the angle A. Therefore, the mounting section main body 41 of the mounting section 4 to which the second rack 57 is coupled does not move forward until the door 3 pivots by an angle A. As shown in FIG. When the door 3 is pivoted by an angle A, the first rack 52 and the first pinion gear 53 are meshed as shown in FIG.

When the door 3 is further pulled forward from the state of FIGS. 5 and 9 and pivoted about the pivots 35R and 35L, the first pinion gear 53 engaged with the first rack 52 is , rotates as the first rack 52 moves forward. As the first pinion gear 53 rotates, the large-diameter gear 54 rotates at the same angular velocity as the first pinion gear 53 . The distance of rotation of the large-diameter gear 54 in the circumferential direction of the pitch circle is longer than that of the first pinion gear 53 . Further, the small-diameter gear 55 meshing with the large-diameter gear 54 rotates by the same distance as the large-diameter gear 54 in the circumferential direction of the pitch circle. Furthermore, since the second pinion gear 56 has the same pitch circle radius and the same number of teeth as the small diameter gear 55, it rotates the same distance as the large diameter gear 54 and the small diameter gear 55 in the circumferential direction of the pitch circle. move. As described above, since the gear ratio G is approximately 3.46, the rotational distance of the second pinion gear 56 in the circumferential direction of the pitch circle is approximately 3 times that of the first pinion gear 53. .46 times. Further, the mounting portion main body 41 to which the second rack 57 that meshes with the second pinion gear 56 is coupled is the same distance as the second pinion gear 56 rotates in the circumferential direction. It moves forward along the grooves 17R and 17L of the members 16R and 16L. That is, the guide receiving portions 43R and 43L of the placing portion main body 41 slide along the groove portions 17R and 17L of the guide members 16R and 16L.

Further, when the door 3 pivots up to angle C, the other end side edge 64B of the notch 64 formed in the arm 51 abuts against the stopper 59, restricting further forward pivoting of the door 3. be done. At this time, since the one end side edge 64A of the notch 64 is notched diagonally with respect to the length direction of the arm 51, the stopper 59 can be smoothly received in the notch 64. As shown in FIG. In this state, the first rack 52 meshes with the first pinion gear 53 within a range of distance Lmax from FIG. 5 to FIG. The mounting portion 4 moves forward by a distance Mmax (≈3.46Lmax).

With such a gear ratio G, when the door 3 is pivoted, the front end of the mounting portion 4 may collide with the surface of the door 3 on the baking chamber 15 side. Since the mounting portion 4 does not move forward until the door 3 pivots by the angle A, collision between the mounting portion 4 and the door 3 can be prevented. By optimizing the pivoting angle A of the door 3 at which the mounting portion 4 does not move and the gear ratio G between the first pinion gear 53 and the second pinion gear 56, the mounting portion 4 and While preventing collision with the door 3, the amount of forward protrusion of the mounting portion 4 can be maximized. When the door 3 is fully opened, the arm bearing portion 34 , that is, the front end of the arm 51 is located behind the front end of the mounting portion 4 . Further, when the door 3 is fully opened, the portion of the arm 51 that protrudes from the through groove 20 is below the mounting portion 4 . Therefore, it is possible to make it difficult for the user to touch the arm 51 .

When the door 3 is pivoted to close, an operation opposite to that when the door 3 is pivoted to open occurs.

As described above, the distance between the right end of the guide member 43R and the left end of the guide member 43L is smaller than the width of the opening 14, and the rear end side of the arm 51 is a free end. 7 and 11, the placement section main body 41 is pulled forward along the grooves 17R and 17L, and the placement section main body 41 is disengaged from the grooves 17R and 17L of the guide members 16R and 16L. At this time, since the second rack 57 is meshed with the second pinion gear 56, the second pinion gear 56 and the first pinion gear 53 are rotated by pulling the mounting section main body 41. There is a force that makes At this time, the rear end side of the arm 51 on which the first rack 52 that meshes with the first pinion gear 53 is formed is a free end, so that the first rack 52 rotates the first pinion gear 53 . As it moves, it moves away from the first pinion gear 53 and is temporarily disengaged. That is, the first pinion gear 53 idles with respect to the first rack 52 . Then, when the first pinion gear 53 rotates by one pitch, the first rack 52 temporarily disengaged from the first pinion gear 53 is moved again by the urging force of the tension coil spring 58. It meshes with the first pinion gear 53 . By repeating this, the placing section main body 41 is removed from the grooves 17R and 17L of the guide members 16R and 16L, that is, from the baking chamber 15 . By removing the placing section main body 41 from the baking chamber 15 in this manner, the inside of the baking chamber 15 can be easily cleaned.

After cleaning the inside of the baking chamber, the guide receiving portions 43R and 43L of the placing portion main body 41 are pushed into the grooves 17R and 17L of the guiding members 16R and 16L, so that the placing portion main body 41 is again placed in the baking chamber 15. can be installed inside. That is, when the guide receiving portions 43R and 43L of the placing portion main body 41 are pushed in along the groove portions 17R and 17L of the guide members 16R and 16L with the door 3 fully opened at the angle C, the second rack 57 contacts the second pinion gear 56 . At this time, as described above, since the guiding portions 18R and 18L are formed at the front ends of the guide members 16R and 16L, respectively, the guide receiving portions 43R and 43L of the placing portion main body 41 are inserted into the groove portions 17R and 17L. can be easily inserted into the Then, when the mounting portion main body 41 is pushed in along the grooves 17R and 17L in this state, the second pinion gear 56 rotates and the second rack 57 and the second pinion gear 56 mesh with each other. By meshing these, the small-diameter gear 55, the large-diameter gear 54 and the first pinion gear 53 are removed in the same manner as when the mounting section main body 41 is removed from the grooves 17R and 17L of the guide members 16R and 16L. A turning force acts. At this time, the rear end side of the arm 51 on which the first rack 52 that meshes with the first pinion gear 53 is formed is a free end, so that the first rack 52 rotates the first pinion gear 53 . As it moves, it moves away from the first pinion gear 53 and is temporarily disengaged. That is, the first pinion gear 53 idles with respect to the first rack 52 . Then, when the first pinion gear 53 rotates by one pitch, the first rack 52 temporarily disengaged from the first pinion gear 53 is moved again by the urging force of the tension coil spring 58. It meshes with the first pinion gear 53 . By repeating this, the mounting section main body 41 is attached again to the grooves 17R and 17L of the guide members 16R and 16L, that is, to the baking chamber 15 .

In this case, the relative positional relationship between the door 3, the guide members 16R and 16L, and the placement section main body 41 may not be accurate. That is, when the door 3 is fully opened by the angle C, the placement section main body 41 is at the specified position shown in FIGS. is desirable, but it may be attached so that the placement section main body 41 is positioned deeper than the specified position. However, when the door 3 is fully opened at the angle C, the placement section main body 41 is located in front of the specified position because the door 3 and the placement section main body 41 are positioned in front of the specified position when the door 3 is closed. may collide with each other, which is not preferable.

For example, when pivoting to close the door 3 in a state where the placing section main body 41 is attached to the back of the specified position, the arm 51 of the link mechanism 5 is moved along with the pivoting to the tension coil. It is drawn into the body 2 by the biasing force of the spring 58 . At this time, the arm 51 swings around the swing shaft 62 . Further, as described above, since the rear end side of the arm 51 is biased rearward and upward by the tension coil spring 58, the first rack 52 of the arm 51 meshes with the first pinion gear 53. continue. Therefore, when the door 3 is pivoted to close, the first rack 52 moves rearward to rotate the first pinion gear 53, and along with this rotation, the large diameter gear 54 and the small diameter gear 54 rotate. A gear 55 and a second pinion gear 56 rotate, and furthermore, a second rack 57 meshing with the second pinion gear 56, and furthermore, the mounting portion body 41 to which the second rack 57 is coupled is formed into the groove portions 17R and 17L. move inwards along the However, since the placing section main body 41 is attached at a position deeper than the specified position, the guide receiving portions 43R and 43L of the placing section main body 41 are not moved before the door 3 reaches the positions shown in FIGS. contacts the end walls 19 of the guide members 16R and 16L, and cannot move further. That is, the movement of the second rack 57 stops. As a result, the second pinion gear 56 meshing with the second rack 57, and the small diameter gear 55, the large diameter gear 54 and the first pinion gear 53 interlocking with the second pinion gear 56 also stop. Furthermore, in this state, since the first rack 52 and the first pinion gear 53 are engaged with each other, the movement of the arm 51 on which the first rack 52 is formed also stops. Therefore, the biasing force of the tension coil spring 58 prevents the door 3 from further pivoting.

However, when the door 3 is further pivoted to close by the user's hand from this state, as described above, the rear end side of the arm 51 is a free end, so that the rear end of the arm 51 moves backward. , the first rack 52 moves away from the first pinion gear 53 and is temporarily disengaged. That is, the teeth of the first rack 52 ride over the teeth of the first pinion gear 53 . When the first rack 52 moves by one pitch, the first rack 52 temporarily disengaged from the first pinion gear 53 is moved again by the biasing force of the tension coil spring 58. It meshes with the pinion gear 53 . By repeating this, the door 3 can be pivoted so as to close said door 3 .
When the door 3 is pivoted to the angle A, the engagement between the first rack 52 and the first pinion gear 53 is released, and the first pinion gear 53 moves the first rack 52 on the arm 51. It abuts on the non-forming portion 63 . As a result, the arm 51 is pulled backward by the urging force of the tension coil spring 58, and the door 3 is also pulled by the arm 51 and closed, returning to the state shown in FIGS.

In this way, the ease of attachment and detachment of the mounting portion 4 with respect to the main body 2 not only improves the cleaning property in the baking chamber 15, but also improves the assembling property at the time of manufacturing the toaster oven 1. also means

As described above, the present invention comprises a main body 2 having an opening 14 formed in the front and a baking chamber 15 inside, and a door 3 pivotally supported by the main body 2 and capable of opening and closing the opening 14. , an oven as a heat cooking device having a mounting portion 4 that appears and disappears from the opening portion 14 as the door 3 is opened and closed, and a link mechanism 5 that interlocks the movement of the door 3 with the movement of the mounting portion 4. In the toaster 1, the link mechanism 5 includes an arm 51 whose front end is swingably supported by the door 3 and a first rack 52 is formed on the rear side, and a first pinion meshing with the first rack 52. A gear 53, a second pinion gear 56 whose pitch circle moves at a linear velocity faster than the linear velocity of the pitch circle of the first pinion gear 53 as the first pinion gear 53 rotates, and the second pinion. It has a second rack 57 that meshes with the gear 56, and a tension coil spring 58 as a biasing member that biases the rear side of the arm 51 rearward and toward the first pinion gear 53. 57 is coupled to the placing portion 4, even if the arm bearing portion 34, which supports the front end of the arm 51 on the door 3, is provided near the pivot shafts 35R and 35L of the door 3, the By appropriately adjusting the ratio of the outer peripheral linear velocities of the first pinion gear 53 and the second pinion gear 56, that is, the gear ratio G, the amount of withdrawal Mmax of the placing portion 4 can be stably placed. You can pull out as much as you can. Therefore, the risk of touching the arm 51 when the door 3 is opened can be reduced.

Further, according to the present invention, the non-formed portion 63 of the first rack 52 is attached to the arm 51 so that the first rack 52 meshes with the first pinion gear 53 when the door 3 is pivoted by a predetermined angle A. is provided, the mounting portion 4 is not drawn forward from when the door 3 starts to open until it pivots at a predetermined angle A, so that the door 3 and the mounting portion 4 are You can avoid collisions.

Guide members 16R and 16L extending in the front-rear direction are provided on both left and right walls of the baking chamber, respectively. are provided on the left and right sides of the mounting portion main body 41, and the arm 51 can swing in the direction in which the first rack 52 moves away from the first pinion gear 53 against the biasing force of the tension coil spring 58. The arm 51 is supported by the door 3 so that when the mounting section main body 41 is pulled further forward from the maximum protruding state, the first pinion gear 53 moves the second pinion gear 56 and the second pinion gear 56 . Although it rotates in conjunction with the second rack 57 , the engagement between the first rack 52 and the first pinion gear 53 is temporarily released and the mounting portion main body 41 can be removed from the main body 2 . can. Therefore, the inside of the baking chamber 15 can be easily cleaned.

Furthermore, since the second pinion gear 56 is provided below the second rack 57, the second pinion gear 56 does not become an obstacle when the food to be cooked is placed on the placing section 4. can.

It should be noted that the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the gist of the invention. For example, in the above embodiment, a speed increasing mechanism composed of a large diameter gear and a small diameter gear is provided between the first pinion gear and the second pinion gear, but a speed increasing mechanism of another type may be provided. Further, the second pinion gear may be provided coaxially and integrally with the first pinion gear, and the pitch diameter of the second pinion gear may be larger than the pitch diameter of the first pinion gear.

1 toaster oven (cooking device)
2 main body 3 door 4 mounting part 5 link mechanism 14 opening 15 baking chamber 16R, 16L guide members 17R, 17L grooves 21R, 21L body side bearings 33R, 33L door side bearings 34 arm bearings 35R, 35L pivot 51 arm 52 first rack 53 first pinion gear 56 second pinion gear 57 second rack 58 tension coil spring (biasing member)
60 Bearing hole 62 Oscillating shaft 63 Unformed portion A Angle C Angle G Gear ratio L Distance Lmax Distance M Distance Mmax Distance R1 Radius of pitch circle of first pinion gear 53 R4 Radius of pitch circle of second pinion gear 56 T1 Number of teeth of one pinion gear 53 T4 Number of teeth of second pinion gear 56

Claims (4)

A main body having an opening formed in the front and having a baking chamber inside, a door pivotally supported by the main body and capable of opening and closing the opening, and a mount that appears and disappears from the opening as the door is opened and closed. In a heat cooking device having a placement section and a link mechanism that interlocks movement of the door and movement of the placement section,
The link mechanism comprises an arm whose front end is swingably supported by the door and a first rack is formed on the rear side, a first pinion gear that meshes with the first rack, and the first pinion gear. A second pinion gear whose pitch circle rotates at a higher linear velocity than the linear velocity of the pitch circle of the first pinion gear as it rotates; a second rack that meshes with the second pinion gear; and an urging member that urges the rear side rearward and toward the first pinion gear, wherein the second rack is coupled to the mounting portion. 2. The heating according to claim 1, wherein the arm is provided with a non-forming portion of the first rack so that the first rack meshes with the first pinion gear when the door is pivoted by a predetermined angle. cooking equipment. Guide members extending in the front-rear direction are provided on both left and right walls of the baking chamber, and guide receiving portions that are detachable from the front of the guide members are provided on the left and right sides of the placement portion, respectively. 2. The arm is supported by the door so that the arm can swing in a direction in which the first rack separates from the first pinion gear against the biasing force of heating and cooking equipment. 2. The cooking device according to claim 1, wherein said second pinion gear is provided below said second rack.

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