CN214541956U - Door control switch interlocking device and steam oven - Google Patents

Abstract

The utility model belongs to the technical field of steam ovens, in particular to a door control switch interlocking device, which comprises a buckle wheel bracket, a buckle wheel supporting plate, a buckle wheel and a door hook which are movably arranged on the buckle wheel supporting plate, a buckle wheel torsional spring and a tension spring; the buckling wheel and the buckling wheel torsion spring are coaxially and rotatably arranged on the buckling wheel supporting plate through a pin shaft, one end of the buckling wheel torsion spring is connected with the buckling wheel supporting plate, and the other end of the buckling wheel torsion spring is clamped into a shaft ring notch of the buckling wheel, so that the buckling wheel automatically resets and rotates; one end of the tension spring is connected with the buckle wheel supporting plate, and the other end of the tension spring is connected with the door hook, so that the door hook automatically resets and swings; the door hook is applied to the buckle wheel along with external force, so that the door hook locks or resets the buckle wheel. The steam oven adopting the door control switch interlocking device is also provided, semi-automatic opening and closing of the door assembly are realized by means of external force, and the defects of the steam oven door control interlocking device in the prior art in the aspects of beautifying of the whole machine shape, convenience in operation, manufacturing cost and the like can be further improved.

Description

Door control switch interlocking device and steam oven

Technical Field

The utility model belongs to the technical field of steam oven, especially, relate to a door control switch interlock and adopt this door control switch interlock's steam oven.

Background

Along with the continuous improvement of the living standard of people, the pursuit of people on the living quality is more and more strict, moisture and nutrition of things made by a microwave oven are greatly lost, the taste is very poor when people eat the food, and the requirements of people can not be met, so more and more people begin to eliminate the microwave oven and use the microwave as an auxiliary function, and a steam oven is provided, so that the time can be saved when people steal or bake, and the selection of cooking modes and tastes can be increased.

Steam ovens on the market today can be classified into desktop and embedded types because the overall appearance is limited by the appearance of industrial designs. The two types of door opening methods include a downward sliding door structure method or a side opening door structure method, and the door opening method usually adopts a door opening method by pulling a handle or opening the door by a mechanical button. To the structural style of side opening the door, tend to not have the handle to open the door more, adopt mechanical button's the mode of opening the door mostly, it is through setting up the button on door subassembly, through pressing the locking that the button realized door subassembly and loosening. However, no matter the structure with a handle or the button pressing structure, the door assembly needs to be additionally provided with the handle or the button and the decorative ring, so that holes are inevitably formed in the outer edge glass of the door assembly, the appearance of the whole machine is affected, and meanwhile, the cost is increased.

In order to solve the above-mentioned defects, make the whole door assembly into the whole plane glass effect, strive for the demand of more perfect outward appearance, so, it is very necessary to carry on further optimization improvement to the existing gate interlock.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a door control switch interlock aims at solving among the prior art door control interlock of steam oven still imperfect and the technical problem that needs further optimization in the aspects such as the beautification of complete machine molding, the convenience of operation and manufacturing cost.

In order to achieve the above object, an interlocking device for a door control switch provided in an embodiment of the present invention includes a buckle wheel bracket, a buckle wheel supporting plate disposed on the buckle wheel bracket, a buckle wheel and a door hook movably disposed on the buckle wheel supporting plate, a buckle wheel torsion spring and a tension spring; the buckling wheel and the buckling wheel torsion spring are coaxially and rotatably arranged on the buckling wheel supporting plate through a pin shaft, one end of the buckling wheel torsion spring is connected with the buckling wheel supporting plate, and the other end of the buckling wheel torsion spring is clamped into a shaft ring notch of the buckling wheel, so that the buckling wheel automatically resets and rotates; one end of the tension spring is connected with the buckle wheel supporting plate, and the other end of the tension spring is connected with the door hook, so that the door hook automatically resets and swings; the door hook is applied to the buckling wheel along with external force, so that the buckling wheel is locked or reset.

Optionally, a first arc body and a second arc body are sequentially formed on the circumferential surface of the buckle wheel along the radial direction of the buckle wheel in a locally protruding manner, the circumferential surface of the first arc body forms a first reset arc surface, and the circumferential surface of the second arc body forms a second reset arc surface; the second arc body is overlapped on the first arc body, the second arc body extends along the end part in an equal diameter mode to form a third arc body, and the first arc body and the third arc body are connected through a reset inclined plane. The structural design aims to assist the automatic reset operation of the door hook buckled on the buckling wheel.

Optionally, an end of the second arc body far away from one end of the third arc body forms an arc-shaped inclined plane; along with the movement of the buckle wheel, the arc-shaped inclined plane drives the door hook to swing. The structural design aims to form a driving force for driving the door hook to swing.

Optionally, the width of the first arc body is between the width of the third arc body and the width of the second arc body; the lateral wall of the first arc body forms a first limiting surface, the end part of the second arc body forms a second limiting surface, and the lateral wall of the third arc body forms a third limiting surface. The structural design aims at the locking operation of the door hook on the buckle wheel.

Optionally, the buckle wheel is convexly provided with a supporting body along the width direction, and the supporting body is arranged along the radial direction of the buckle wheel; the side wall of the support body forms a support surface. The structural design aims to form a driving force for driving the pinch roller to rotate.

Optionally, the circumferential surface of the pinch roller is partially protruded along the radial direction thereof to form a pressing sheet, and one end surface of the pressing sheet is of an arc-shaped gradual change structure. The purpose of this structural design is that the realization of the switch-on or switch-off of micro-gap switch in the process of the reciprocating rotation of the pinch roller.

Optionally, the locking device further comprises a switch bracket arranged on the pinch roller supporting plate and a micro switch arranged on the switch bracket; in the process of the movement of the pinch roller, the arc-shaped gradual change structure enables the pressing sheet to be in contact with or separated from the microswitch. The structural design aims to realize connection or disconnection with a control circuit in the door opening and closing process.

Optionally, the door hook is of a sheet structure with a bent end part, and the middle part of the door hook is connected with the tension spring; the tail part of the door hook is provided with a butterfly-shaped through hole, and the buckle wheel supporting plate penetrates through the butterfly-shaped through hole through a bulge to limit the swing amplitude of the door hook.

The embodiment of the utility model provides an among the gate is opened relevant locking device above-mentioned one or more technical scheme have one of following technological effect at least:

1. when the buckling wheel rotates under the action of external force, the door hook swings under the action of the arc-shaped inclined plane, and when the highest point of the arc-shaped inclined plane is reached, the tension spring pulls the door hook to reset and swing, so that the door hook is firstly contacted with the first limiting surface; when the external force is removed, the buckling wheel swings along with the resetting under the action of the torsion spring, when the door hook contacts the second limiting surface, the bending part of the door hook is lapped on the second limiting surface, and the buckling wheel does not swing again according to the vertical stress characteristic; meanwhile, under the action of the tension spring, the door hook continues to reset and swing, and stops reaching a locking state when contacting with the third limiting surface of the buckle wheel.

2. When the buckling wheel is in a locking state, the external force acts on the buckling wheel again, the buckling wheel continues to perform reset swing under the action of the torsion spring, the door hook continues to perform reset swing at the moment, and the door hook sequentially enters the second reset arc surface and the third reset arc surface through the reset inclined plane after contacting the first reset arc surface, so that the buckling wheel is reset to an initial state.

3. The utility model can be installed at the back of the front plate of the steam oven, can form a modularized component, can adjust the installation position according to the door opening characteristics of the machine type, and has strong universality; the whole set of structure has few parts, low cost, simple assembly and good practical effect.

Another object of the utility model is to provide a door control switch interlock aims at solving the steam oven among the prior art and adopts handle or mechanical button mode to open a door the trend and must trompil on the outer fringe glass of door subassembly usually, causes the technical problem who influences complete machine outward appearance, incremental cost etc..

In order to achieve the above object, an embodiment of the present invention provides a steam oven, which includes an oven main body, a front plate disposed at an opening end of the oven main body, and a door assembly opening and closing with the oven main body.

Optionally, the steam oven further comprises the door control switch interlocking device, a door buckle and a door body sealing ring are arranged on the door assembly, the door buckle is arranged corresponding to the front plate, and the door body sealing ring is arranged corresponding to the opening of the oven main body; the door control switch interlocking device is arranged on the front plate, and the front plate and the buckle wheel bracket are both provided with through holes for facilitating insertion of the door buckle.

Optionally, a drag hook is dug along a non-radial direction on the circumferential surface of the buckle wheel, and the door buckle is provided with a buckling hole buckled with the drag hook. The structural design aims to provide acting force on the buckling wheel to enable the door assembly to be opened or closed along with the opening and closing of the door assembly.

The embodiment of the utility model provides an above-mentioned one or more technical scheme in the steam oven have one of following technological effect at least:

1. when the door assembly is closed by applying external force, the front end of the door catch pushes the supporting surface to enable the catch wheel to rotate, the door hook swings under the action of the arc-shaped inclined surface, and after the highest point of the arc-shaped inclined surface is reached, the tension spring pulls the door hook to reset and swing, so that the door hook is firstly contacted with the first limiting surface; the external force acting on the door assembly is cancelled, the door assembly can rebound slightly due to the action of the door body sealing ring, the buckling wheel swings along with resetting due to the action of the torsion spring in the rebound process, when the door hook contacts the second limiting surface, the bending part of the door hook is lapped on the second limiting surface, and the buckling wheel does not swing again according to the vertical stress characteristic; meanwhile, under the action of the tension spring, the door hook continues to reset and swing, and stops to realize that the door assembly is in a locking state when contacting with the third limiting surface of the buckling wheel. When the door assembly needs to be opened, external force is only needed to be applied to the door assembly, at the moment, the buckling wheel continues to reset and swing under the action of the torsion spring, meanwhile, the door hook continues to reset and swing along with the torsion spring, and after the door hook contacts the first reset arc surface, the door hook sequentially enters the second reset arc surface and the third reset arc surface through the reset inclined surface, so that the buckling wheel is reset to the initial state, and the door assembly is closed next time. The steam oven utilizes the motion mechanism of each assembly part, the relative motion of each assembly part and related limit points and limit points, so that the motion mechanism can realize the closing or opening of the door assembly in the process of moving in the front and back directions; and a push-out motor, a wax motor or other button push-out mechanisms are not needed, so that the problems of badness and maintenance caused by the use of electric equipment can be avoided.

2. In the closing process of the door assembly, the arc-shaped gradual change structure on the buckle wheel realizes the opening of the micro switch, so that the control circuit of the steam oven is automatically switched on to start the steam oven. When the door assembly is opened, the arc-shaped gradual change structure on the buckling wheel realizes the closing of the microswitch, so that the control circuit of the steam oven is automatically disconnected to close the steam oven. According to the steam oven, the door opening and closing and the control circuit opening and closing can be realized by hiding the interaction between the door buckle and the buckle wheel which are arranged on the door assembly, a handle or other button mechanisms do not need to be arranged, and the outer glass of the door assembly does not need to be provided with an opening or other gaps, so that the cost is saved; and the appearance surface of the whole machine is smooth, so that the whole paster can be conveniently assembled and is convenient to clean.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic view of an open state of a steam oven door assembly according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 labeled A;

fig. 3 is another perspective view of an open position of a steam oven door assembly according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a door control switch interlocking device provided by an embodiment of the present invention;

fig. 5 is an exploded view of a door controlled switch interlock device according to an embodiment of the present invention;

FIG. 6 is a partially enlarged view of FIG. 5 labeled B;

fig. 7 is a longitudinal cut-away view of a steam oven provided in an embodiment of the present invention;

FIG. 8 is an enlarged partial view of FIG. 7 at reference C;

fig. 9 is a schematic view of a buckle wheel structure provided in the embodiment of the present invention;

FIG. 10 is an enlarged partial view of FIG. 9 at D;

fig. 11 is a schematic structural view of a closed state of the steam oven according to the embodiment of the present invention;

FIG. 12 is an enlarged partial view of FIG. 11 labeled E;

fig. 13 is a partial state diagram of an arc-shaped inclined surface driving door hook provided by the embodiment of the present invention;

fig. 14 is a partial state diagram of a first limiting surface limiting door hook according to an embodiment of the present invention;

fig. 15 is a partial state diagram of a third limiting surface limiting door hook according to an embodiment of the present invention;

fig. 16 is a partial state diagram of the door hook crossing the third limiting surface according to the embodiment of the present invention;

fig. 17 is a partial state diagram of the door hook sliding over the reset inclined plane according to the embodiment of the present invention;

fig. 18 is a partial state diagram of the door hook sliding along the second restoring arc surface according to the embodiment of the present invention;

wherein, in the figures, the respective reference numerals:

10-oven body, 11-front plate, 111-perforations;

20-door component, 21-door buckle, 211-buckle hole and 22-door body sealing ring;

30-door control switch interlocking device, 31-pinch roller bracket, 32-pinch roller supporting plate, 33-pinch roller, 331-first arc body, 3311-first reset arc surface, 3312-first limit surface, 332-second arc body, 3321-second reset arc surface, 3322-arc inclined surface, 3323-second limit surface, 333-third arc body, 3331-reset inclined surface, 3332-third limit surface, 334-supporting body, 3341-supporting surface, 335-pressing sheet, 3351-arc gradual change structure, 336-pulling hook, 34-door hook, 341-butterfly through hole, 35-pinch roller torsional spring, 36-tension spring, 37-pin shaft, 38-switch bracket and 39-microswitch.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary and intended to explain the embodiments of the present invention and are not to be construed as limiting the present invention.

In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which is only for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

In one embodiment of the present invention, as shown in fig. 1-2, a steam oven is provided, which comprises an oven body 10, a front plate 11 disposed at an opening end of the oven body, and a door assembly 20 opened and closed with the oven body 10.

Further, the steam oven further comprises a door control switch interlocking device 30 arranged on the back surface of the front plate 11. In the application process, the installation position of the door control switch interlocking device 30 is according to the door opening characteristic of the steam oven, and can be installed on the left or right side of the oven main body 10, thereby enhancing the versatility of the product. In this embodiment, the door assembly 20 is provided with a door sealing ring 22; specifically, the door body sealing ring 22 is arranged corresponding to the opening of the oven main body 10, and the arrangement of the door body sealing ring 22 is convenient for effectively sealing the working area of the steam oven after the door assembly 20 is closed, so that the heat loss is reduced; second, due to its configuration, the door assembly 20 has a micro-motion rebound after closing to an extreme position.

As shown in fig. 1 and 3, the door assembly 20 is provided with a door latch 21. In this embodiment, the door latch 21 and the front plate 11 are disposed correspondingly, the front plate 11 is provided with a through hole 111 for the door latch 21 to be inserted into, the door assembly 20 is in the closing process under the action of an external force, and the door latch 21 acts on the door control switch interlocking device 30 through the through hole. Specifically, in order to facilitate the door holder 21 to be smoothly inserted into the door control switch interlocking device 30, the through hole of the front plate 11 is in a structure of a flap hole; in addition, in order to quickly find the position of the door holder 21, the door assembly 20 is opened by pressing the door holder 21, and a key positioning mark is additionally arranged on the outer surface glass of the door assembly 20.

As shown in fig. 4 and 5, the door control switch interlocking device 30 includes a buckle wheel support 31, a buckle wheel support plate 32 disposed on the buckle wheel support, a buckle wheel 33 and a door hook 34 movably disposed on the buckle wheel support plate, a buckle wheel torsion spring 35 and a tension spring 36. In this embodiment, the pinch roller 33 and the pinch roller torsion spring 35 are coaxially and rotatably disposed on the pinch roller support plate 32 via a pin 37; specifically, the one end of the pinch roller torsional spring 35 with pinch roller backup pad 32 is connected, and its other end card is gone into the axle circle breach of pinch roller 32, knocker 21 drive pinch roller 33 rotates the in-process, pinch roller torsional spring 35 also warp along with it, and after external force withdraws, pinch roller torsional spring 35 resumes the in-process and can make pinch roller 33 automatic re-setting rotates. In addition, extension spring 36 one end with detain the wheel backup pad 32 and be connected, its other end with door hook 34 is connected, the drive when detaining wheel 33 rotates door hook 34 swings, extension spring 36 is also along with warping, when detaining wheel 33 and reset the rotation in-process, door hook 34 resets and swings under the effect of extension spring 36 for detain the wheel 33 locking and realize the locking of door subassembly 20.

As shown in fig. 6, the door hook 34 is a sheet structure with bent ends, and the middle part of the door hook is connected with the tension spring 36; the tail of the door hook 34 is provided with a butterfly through hole 341, and the pinch roller support plate 32 passes through the butterfly through hole 341 through a protrusion to limit the swing amplitude of the door hook 34.

As shown in fig. 7 and 8, the sprocket 33 is provided with a support body 334 protruding in the width direction thereof, the support body is provided along the radial direction of the sprocket 33, and a side wall of the support body 334 forms a support surface 3341. Specifically, when the door assembly 20 is closed by an external force, the door latch 21 abuts against the supporting surface 3341 to drive the latch wheel 33 to rotate clockwise, and simultaneously the door hook 34 synchronously swings clockwise due to the clockwise rotation of the latch wheel 33.

Further, a hook 336 is dug on the circumferential surface of the buckle wheel 33 along a non-radial direction. Preferably, the door latch 21 is provided with a fastening hole 211 fastened with the hook 336. Specifically, when the sprocket 33 is in the locked state, the hook 336 completely hooks the fastening hole 211, so that the door assembly 20 is in the closed state.

As shown in fig. 9 and 10, a first arc 331 and a second arc 332 are formed on the circumferential surface of the sprocket 33 in order so as to partially protrude in the radial direction. Further, the second arc body 332 is overlapped on the first arc body 331, and the second arc body 332 extends along the end portion with the same diameter to form a third arc body 333.

Further, an arc inclined surface 3322 is formed at an end of the second arc body 332 far away from one end of the third arc body 333, specifically, the arc inclined surface 3322 drives the door hook 34 to swing clockwise along with the clockwise rotation of the buckle wheel 33, and after the highest point of the arc inclined surface 3322 is reached, the door hook 34 is in a state without external force.

Further, the width of the first arc 331 is between the width of the third arc 333 and the width of the second arc 332; the side wall of the first arc body 331 forms a first limit surface 3312, the end of the second arc body 332 forms a second limit surface 3323, and the side wall of the third arc body 333 forms a third limit surface 3332. Specifically, when the door hook 34 passes through the limit point due to the clockwise rotation of the fastening wheel 33 when an external force acts on the door assembly 20 during the closing process, the tension spring 36 pulls the door hook 34 to swing again, and first contacts with the first limit surface 3312; at this moment, the external force acting on the door assembly 20 is cancelled, the door assembly 20 slightly rebounds due to the compression rebound effect of the door body sealing ring 22, the buckling wheel 33 follows the counterclockwise resetting rotation due to the effect of the buckling wheel torsion spring 35 in the rebound process, when the door hook 21 contacts the second limiting surface 3323, the bending part of the door hook 34 is lapped on the second limiting surface 3323, the buckling wheel 33 does not reset and rotate any more according to the vertical stress characteristic, but the door hook 34 continues to reset and swing due to the effect of the tension spring 36 and stops when contacting with the third limiting surface 3332 of the buckling wheel, so that the door hook 34 is locked on the buckling wheel 33.

Further, the circumferential surface of the first arc body 331 forms a first reset arc surface 3311, and the circumferential surface of the second arc body 332 forms a second reset arc surface 3321; the first arc 331 and the third arc 333 are connected via a reset inclined plane 3331. When the door assembly 20 needs to be opened, external force is only required to be applied to extrude the key positioning mark of the door assembly 20, and under the compression of the door body sealing ring 22, the buckling wheel 33 rotates clockwise to enable the door hook 34 to be separated from the third limiting surface 3332; when the applied pressure is removed, the catching wheel 33 continues to perform counterclockwise reset rotation under the action of the catching wheel torsion spring 35, and meanwhile, the door hook 34 continues to perform counterclockwise reset swing along with the catching wheel torsion spring, and after contacting the first reset arc surface 3311, the door hook enters the second reset arc surface 3321 through the reset inclined surface 3331 in sequence, so that the catching wheel 33 is reset to the initial state, and the door assembly 20 is closed next time. The steam oven utilizes the moving mechanism of each assembly part, the relative movement of each assembly part and related limit points and limit points, so that the closing or opening of the door assembly 20 is realized during the moving process of the moving mechanism in the front-back direction; and a push-out motor, a wax motor or other button push-out mechanisms are not needed, so that the problems of badness and maintenance caused by the use of electric equipment can be avoided.

As shown in fig. 9, 11 and 12, the pressing piece 335 is formed on the circumferential surface of the fastening wheel 33 by partially protruding along the radial direction, and one end surface of the pressing piece 335 is in an arc-shaped gradual change structure 3351.

Further, the steam oven further includes a switch bracket 38 provided on the pinch wheel support plate 32 and a micro switch 39 provided on the switch bracket. Specifically, during the closing process of the door assembly 20 and during the clockwise rotation process, the arc-shaped gradual-change structure 3351 contacts the microswitch 39 and can be fully pressed, so as to realize the connection with the control circuit and automatically start the steam oven; on the contrary, during the opening process of the door assembly 20 and during the counterclockwise rotation process of the pinch roller 33, the arc-shaped gradual change structure 3351 gradually disengages from the microswitch 39, so as to realize the connection with the control circuit and automatically close the steam oven.

The utility model discloses a door control switch interlock 30 assembling process does: with reference to figures 4 and 5 of the drawings,

the method comprises the following steps: the pinch roller torsion spring 35 is clamped into the pinch roller 33, and the pinch roller torsion spring 35 is assembled according to a torsion spring limiting groove with a designed structure;

step two: the buckle pulley 33 with the buckle pulley torsion spring 35 assembled is arranged inside the buckle pulley support plate 32, the pin shaft 37 penetrates through the buckle pulley 33 from one side of the buckle pulley support plate 32, the other end of the pin shaft 37 penetrates through a through hole in the other side of the buckle pulley support plate 32, the pin shaft 37 is riveted on the buckle pulley support plate 32 by using a tool, and meanwhile, one end of the buckle pulley torsion spring 35 with a hook is clamped into a limiting notch of the buckle pulley support plate 32;

step three: the door hook 34 and the tension spring 36 are assembled on the buckle wheel support plate 32, and the butterfly-shaped through hole 341 on the door hook 34 and the flange convex structure on the buckle wheel support plate 32 are assembled; the two ends of the tension spring 36 are respectively hooked on the door hook 34 and the buckle wheel support plate 32; a butterfly-shaped through hole 341 in the door hook 34 for fitting the door hook 34 to the sprocket support plate 32;

step four: the switch bracket 38 is assembled to the pinch roller support plate 32 with the fittings installed thereon, and is fixed by using screws;

step five: the microswitch 39 is snapped into the switch bracket 38.

The utility model discloses a steam oven switching door's theory of operation does: as shown in fig. 13 to 18, when the door assembly 20 is closed by an external force, the front end of the door latch 21 pushes the supporting surface 3341 to make the latch wheel 33 rotate clockwise after passing through the through hole of the front plate 11, the door hook 34 swings clockwise under the action of the arc-shaped inclined surface 3322, and when the highest point of the arc-shaped inclined surface 3322 is reached, the tension spring 36 pulls the door hook 34 to swing counterclockwise; first, the door hook is in contact with the first position-limiting surface 3312, at this time, the external force acting on the door assembly 20 is removed, the door assembly 20 can slightly rebound due to the action of the door body sealing ring 22, the pinch roller 33 continues to rotate counterclockwise by returning due to the action of the pinch roller torsion spring 35 in the rebound process, when the door hook 34 contacts the second position-limiting surface 3323, the bent part of the door hook 34 is lapped on the second position-limiting surface 3323, and the pinch roller 33 does not swing again according to the vertical force characteristic; due to the tension spring 36, the door hook 34 will continue to swing again, and stop to achieve the locking state of the door assembly 20 when contacting the third limiting surface 3332 of the catch wheel 33. Meanwhile, the arc-shaped gradual change structure 3351 contacts the microswitch 39 and is pressed down, so that the connection with a control circuit is realized, and the steam oven is automatically started;

when the door assembly 20 needs to be opened, external force is only required to be applied to extrude the key positioning mark of the door assembly 20, and under the compression of the door body sealing ring 22, the buckling wheel 33 rotates clockwise to enable the door hook 34 to be separated from the third limiting surface 3332; when the applied pressure is removed, the catching wheel 33 continues to perform counterclockwise reset rotation under the action of the catching wheel torsion spring 35, and meanwhile, the door hook 34 continues to perform counterclockwise reset swing along with the catching wheel torsion spring, and after contacting the first reset arc surface 3311, the door hook enters the second reset arc surface 3321 through the reset inclined surface 3331 in sequence, so that the catching wheel 33 is reset to the initial state, and the door assembly 20 is closed next time. Meanwhile, during the counterclockwise returning rotation of the pinch wheel 33, the arc-shaped gradual change structure 351 is gradually separated from the microswitch 39, so as to realize the connection with the control circuit and automatically close the steam oven.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A door-controlled opening interlock device, comprising: comprises a buckle wheel bracket, a buckle wheel supporting plate arranged on the buckle wheel bracket, a buckle wheel and a door hook movably arranged on the buckle wheel supporting plate, a buckle wheel torsional spring and a tension spring; the buckling wheel and the buckling wheel torsion spring are coaxially and rotatably arranged on the buckling wheel supporting plate through a pin shaft, one end of the buckling wheel torsion spring is connected with the buckling wheel supporting plate, and the other end of the buckling wheel torsion spring is clamped into a shaft ring notch of the buckling wheel, so that the buckling wheel automatically resets and rotates; one end of the tension spring is connected with the buckle wheel supporting plate, and the other end of the tension spring is connected with the door hook, so that the door hook automatically resets and swings; the door hook is applied to the buckling wheel along with external force, so that the buckling wheel is locked or reset.

2. The gate switch interlock of claim 1, wherein: a first arc body and a second arc body are sequentially formed on the circumferential surface of the buckle wheel along the radial direction of the buckle wheel in a locally protruding manner, the circumferential surface of the first arc body forms a first reset arc surface, and the circumferential surface of the second arc body forms a second reset arc surface; the second arc body is overlapped on the first arc body, the second arc body extends along the end part in an equal diameter mode to form a third arc body, and the first arc body and the third arc body are connected through a reset inclined plane.

3. The gated switch interlock of claim 2, wherein: the end part of the second arc body far away from one end of the third arc body forms an arc-shaped inclined plane; along with the movement of the buckle wheel, the arc-shaped inclined plane drives the door hook to swing.

4. The gated switch interlock of claim 2, wherein: the width of the first arc body is between the width of the third arc body and the width of the second arc body; the lateral wall of the first arc body forms a first limiting surface, the end part of the second arc body forms a second limiting surface, and the lateral wall of the third arc body forms a third limiting surface.

5. The gate switch interlock of claim 1, wherein: the buckling wheel is convexly provided with a supporting body along the width direction of the buckling wheel, and the supporting body is arranged along the radial direction of the buckling wheel; the side wall of the support body forms a support surface.

6. The gate switch interlock of claim 1, wherein: the periphery of the pinch roller is partially protruded along the radial direction to form a pressing sheet, and one end surface of the pressing sheet is of an arc gradual change structure.

7. The gated switch interlock of claim 6, wherein: the switch bracket is arranged on the pinch roller supporting plate, and the microswitch is arranged on the switch bracket; in the process of the movement of the pinch roller, the arc-shaped gradual change structure enables the pressing sheet to be in contact with or separated from the microswitch.

8. The gate switch interlock of claim 1, wherein: the door hook is of a sheet structure with bent end parts, and the middle part of the door hook is connected with the tension spring; the tail part of the door hook is provided with a butterfly-shaped through hole, and the buckle wheel supporting plate penetrates through the butterfly-shaped through hole through a bulge to limit the swing amplitude of the door hook.

9. A steam oven comprises an oven body, a front plate arranged at the opening end of the oven body and a door assembly which is opened and closed with the oven body; the method is characterized in that: the door control switch interlocking device according to any one of claims 1 to 7, wherein a door buckle and a door body sealing ring are arranged on the door assembly, the door buckle is arranged corresponding to the front plate, and the door body sealing ring is arranged corresponding to the opening of the oven main body; the door control switch interlocking device is arranged on the front plate, and the front plate and the buckle wheel bracket are both provided with through holes for facilitating insertion of the door buckle.

10. The steam oven of claim 9, wherein: the periphery of the buckling wheel is provided with a drag hook along the non-radial direction, and the door buckle is provided with a buckling hole buckled with the drag hook.

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