Door opening structure of an oven

Abstract

The present application relates to the field of oven, especially to a kind of door opening structure of oven.A kind of door opening structure of oven capable of existing door opening resistance and automatic tendency reset.A kind of door opening structure of oven, including main body, mounting plate, tension member and resistance mechanism;Mounting plate is fixed to the box of main body, resistance mechanism is arranged in mounting plate.Under the action of tension spring, by being divided into three regions for arc-shaped guide rail plate, so that the movable wheel in the closed area or full open area moves towards full open or closed state, so that the opening and closing door completes the automatic reset of full open or full close, solves the problem that the opening and closing door is not well controlled when being opened by hand, resulting in that the opening angle of opening and closing door is not ideal and the closing force is difficult to control.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of ovens, in particular to an oven door opening structure. BACKGROUND

[0002] In the field of kitchen appliances, ovens as a cooking device, the structural design is crucial to the safety and convenience of use. Such ovens are usually composed of a cabinet and a hinged door, which are connected by a hinge and tightly closed by a buckle.

[0003] Therefore, each time the operator pulls open the hinged door, it needs to break through the buckle restriction with instantaneous force. In this process, since the operator cannot control the pulling force of the hinged door, the maximum opening angle of the hinged door varies in a critical range each time. If the force is too large, it will cause the hinged door to open too much, causing the hinge to bend and be damaged and rebound. If the force is small, it will make the opening angle of the hinged door small, making it inconvenient to take and place objects, and it needs to be pushed again. At the same time, when the hinged door is closed, in order to achieve the clamping closure of the hinged door and the cabinet, the operator also needs to exert a certain pushing force on the hinged door. In this process, the same situation of not being able to control the force will occur. If the force is too large, it will cause the hinged door to collide with the cabinet, producing a large noise and causing the hinged door and the cabinet to be easily damaged. If the force is small, it will cause the hinged door to be unable to break through the buckle to complete the closure. SUMMARY

[0004] In order to overcome the above problems, the present application provides an oven door opening structure, which is designed to enable the hinged door to automatically reset to the fully open or fully closed state based on its own opening angle, thereby avoiding the problem that the hinged door cannot accurately stay at the expected angle due to the user's inability to accurately control the force.

[0005] Technical solution is:

[0006] An oven door opening structure, comprising a main body, a mounting plate, a tension member and a resistance mechanism; the mounting plate is fixed to the cabinet of the main body, the resistance mechanism is arranged on the mounting plate, the hinged door of the main body is hinged to the mounting plate, one end of the tension member is hinged to the hinged door of the main body, and the other end is hinged to the resistance mechanism; the resistance mechanism comprises an arc-shaped guide rail plate and a telescopic member, the telescopic member is installed on the tension member, the opening and closing movement of the hinged door drives the tension member to rotate and stretch, the rotation of the tension member makes the telescopic member deformable slide along the arc-shaped guide rail plate, two arc-shaped grooves are formed on the arc-shaped guide rail plate, and the telescopic member is limited in one of the arc-shaped grooves when the hinged door is in a fully closed state; the telescopic member is limited in the other arc-shaped groove when the hinged door is in a fully open state.

[0007] The guide rail member comprises an arc-shaped guide rail plate, the arc-shaped guide rail plate has grooves at both ends and a ring-shaped transition structure in the middle.

[0008] The telescopic piece comprises a fixed frame, a telescopic rod, a movable wheel and a compression spring, the fixed frame is internally provided with a containing groove, one end of the telescopic rod is slidably connected in the containing groove, the other end of the telescopic rod is movably connected with a sliding wheel, and the compression spring is connected between the fixed frame and the telescopic rod.

[0009] The pulling piece comprises a convex disc, a pulling rod, a fixing bolt and a stretching spring, the convex disc is rotatably arranged on the mounting plate, the fixed bolt is arranged on the opening and closing door, one side of the mounting plate is provided with a connecting column, one end of the pulling rod is hingedly connected with the cam, the other end of the pulling rod is hingedly connected with the connecting column, and the stretching spring is connected between the connecting column and the fixed bolt.

[0010] Further comprising a swing piece and a limiting piece, the swing piece is hingedly connected with the swing rod and the arc-shaped guide plate, the limiting piece is arranged on the limiting piece, when the opening and closing door is in the reset state, the limiting piece limits the swing rod, the swing rod is tangent to the arc surface of the arc-shaped guide plate, and the limiting piece is used for limiting the instantaneous reset force of the opening and closing door and the telescopic wheel when the door is closed.

[0011] The swing piece further comprises a torsion spring, the torsion spring is sleeved between the fixed rod and the swing rod and is used for offsetting part of the instantaneous reset force.

[0012] The limiting piece comprises a supporting plate, a limiting rod and a top rod, the supporting plate is arranged on the arc-shaped guide plate, the limiting rod is slidably arranged on the supporting plate, one end of the top rod is arranged on the limiting rod, and the other end of the top rod is attached to the telescopic rod.

[0013] One side of the swing rod is provided with a missing groove, when the opening and closing door is in the reset state, the limiting rod is clamped into the missing groove of the swing rod.

[0014] The groove at one end of the swing rod is attached to the movable wheel of the telescopic piece, and the other end is higher than the inner arc surface of the arc-shaped guide plate.

[0015] The tension of the compression spring is greater than the torsion of the torsion spring, when the opening and closing door is in the closed state, the compression spring pushes the telescopic rod and the movable wheel to press the swing rod, and the torsion spring is twisted.

[0016] Compared with the prior art, the present application has the following advantages: under the action of the stretching spring, the arc-shaped guide plate is divided into three regions, namely, the closed region, the hovering region and the fully open region, the movable wheel in the closed region or the fully open region moves towards the fully open or closed state, so that the opening and closing door completes the automatic reset of the fully open or fully closed state, and the problems that the opening and closing door opening angle is not ideal and the closing force is difficult to control are solved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the mounting plate and the opening and closing door of the present application.

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the convex disc, the opening and closing door and the arc-shaped guide plate of the present application.

[0019] Figure 3 Fig. 4 is a perspective view of the extension piece and resistance mechanism of the present application.

[0020] Figure 4 Fig. 5 is a perspective view of the support plate and limiting rod of the present application.

[0021] Figure 5 Fig. 6 is a perspective view of the swing lever in the clamping state of the present application.

[0022] In the figure, 1 is the mounting plate, 2 is the convex plate, 3 is the opening and closing door, 4 is the pull rod, 51 is the fixed frame, 52 is the extension rod, 53 is the compression spring, 54 is the movable wheel, 61 is the fixed bolt, 62 is the extension spring, 71 is the arc-shaped guide rail plate, 72 is the support plate, 73 is the fixed rod, 74 is the torsion spring, 75 is the swing lever, 81 is the limiting rod, 82 is the tension spring, and 83 is the top rod. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the present application more clear and obvious, the present application is further described in detail below in combination with specific embodiments and with reference to the drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present application. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present application.

[0024] Example 1:

[0025] Due to the manual oven, the opening and closing door 3 is tightly closed with the box body by buckling. Each time the opening and closing door 3 is pulled open, it needs to break through the buckle limit with instantaneous force. In this process, since the operator cannot control the pulling force of the opening and closing door 3, the maximum opening and closing angle of the opening and closing door 3 changes in a critical range each time. If the force is too large, it will cause the opening and closing door 3 to open and close excessively, causing the hinge to bend and be damaged and rebound. If the force is small, it will cause the opening and closing angle of the opening and closing door 3 to be small, which is not convenient for taking and placing objects, and needs to be pushed again. At the same time, when the opening and closing door 3 is closed, in order to achieve the clamping closure of the opening and closing door 3 and the box body, the operator also needs to exert a certain pushing force on the opening and closing door 3. In this process, the same situation of not being able to control the force will occur. If the force is too large, it will cause the opening and closing door 3 to collide with the box body, producing a large noise and causing the opening and closing door 3 and the box body to be easily damaged. If the force is small, it will cause the opening and closing door 3 to be unable to break through the buckle to complete the closure.

[0026] The door opening structure of an oven is characterized in that it comprises a main body, a mounting plate 1, a tension member and a resistance mechanism; the mounting plate 1 is fixed to the oven body of the main body, the resistance mechanism is arranged on the mounting plate 1, the opening and closing door 3 of the main body is hinged to the mounting plate 1, one end of the tension member is hinged to the opening and closing door 3 of the main body, and the other end is hinged to the resistance mechanism; a telescopic member is mounted on the tension member; the opening and closing movement of the opening and closing door 3 drives the tension member to rotate and stretch; the rotation of the tension member enables the telescopic member to deform and slide along the arc-shaped guide rail plate 71; the resistance mechanism comprises the arc-shaped guide rail plate 71 and the telescopic member; two arc-shaped grooves are formed on the arc-shaped guide rail plate 71; when the opening and closing door 3 is in a fully closed state, the telescopic member is limited in one of the arc-shaped grooves; when the opening and closing door 3 is in a fully open state, the telescopic member is limited in the other arc-shaped groove.

[0027] As a household appliance, the internal structure of the oven is divided by function, wherein the lower layer inside the oven is provided with a baking cavity, and a double-door mechanism is arranged between the baking cavity and the upper layer inside the oven, wherein the mounting plate 1 is arranged between the inner side of the top of the oven and the baking area of the oven, the mounting plate 1 is a double-layer built-in hollow cavity, and the remaining components of the present application are arranged in the hollow cavity of the mounting plate 1. Specifically, the door opening structure of an oven comprises a door opening structure of an oven, which comprises a main body, a mounting plate 1, a tension member and a resistance mechanism; the main body is composed of the mounting plate 1, the oven body and the opening and closing door 3; the mounting plate 1 is fixed to the oven body of the main body; the resistance mechanism is arranged on the mounting plate 1; the opening and closing door 3 is hinged to the mounting plate 1; one end of the tension member is hinged to the opening and closing door 3, and the other end is hinged to the resistance mechanism; a telescopic member is mounted on the tension member; the opening and closing movement of the opening and closing door 3 drives the tension member to rotate and stretch; the tension member enables the opening and closing door 3 to automatically reset and close; the rotation of the tension member enables the telescopic member to deform and slide along the arc-shaped guide rail plate 71; the resistance mechanism comprises the arc-shaped guide rail plate 71 and the telescopic member; by designing the arc-shaped guide rail plate 71 and the telescopic member, resistance is generated at both ends and during the opening and closing of the opening and closing door 3, wherein the two ends of the opening and closing door 3 are in a high-resistance state, which is mainly realized by the deformation of the telescopic member to press the convex disc 2; two arc-shaped grooves are formed on the arc-shaped guide rail plate 71 to limit the opening and closing of the opening and closing door 3; when the opening and closing door 3 is in a fully closed state, the telescopic member is limited in one of the arc-shaped grooves; when the opening and closing door 3 is in a fully open state, the telescopic member is limited in the other arc-shaped groove; the opening and closing door 3 is arranged in the hollow cavity of the mounting plate 1 from the middle to the outside; the arc-shaped guide rail plate 71 has grooves at both ends and a ring-shaped transition structure in the middle; the arc-shaped guide rail plate 71 is fixed to the mounting plate 1; a strip-shaped groove and an inclined surface are further formed on the arc-shaped guide rail plate 71.

[0028] The tension member comprises a convex disc 2, a pull rod 4, a fixing bolt 61 and a tension spring 62, the convex disc 2 is rotatably connected to the middle of the mounting plate 1, the fixing bolt 61 is arranged on the opening and closing door 3, two opening and closing doors 3 are hingedly connected to one side of the mounting plate 1, the two opening and closing doors 3 are symmetrically arranged, the convex disc 2 is rotatably arranged in the middle of the mounting plate 1, two convex columns are arranged on the surface of the convex disc 2, the convex column close to the opening and closing door 3 is hingedly connected to the opening and closing door 3 on one side of the telescopic member, and the convex column far from the opening and closing door 3 is hingedly connected to the opening and closing door 3 on one side of the convex disc 2; the telescopic member comprises a fixed frame 51, a telescopic rod 52, a sliding wheel 54 and a compression spring 53, a containing groove is formed in the fixed frame 51, one end of the telescopic rod 52 is slidably connected in the containing groove, the other end of the telescopic rod 52 is movably connected with the sliding wheel, and the compression spring 53 is connected between the fixed frame 51 and the telescopic rod 52;

[0029] At the beginning, the swing lever 75 is in contact with the inclined surface of the arc-shaped guide rail plate 71 under the action of the torsion spring 74, and the swing lever 75 is limited by the inclined surface of the arc-shaped guide rail plate 71, and at the same time, the movable wheel 54 is located in the groove at one end of the swing lever 75 under the action of the compression spring 53. When the oven is in use, the user pulls the two opening and closing doors 3, and the two opening and closing doors 3 rotate around the fulcrum, drive the convex disc 2, the fixed bolt 61 and the fixed frame 51 to rotate forward together through the two protrusions on the convex disc 2 and the pull rod 4, the fixed bolt 61 pulls the tensile spring 62 to stretch, and the fixed frame 51 rotates forward to drive the telescopic rod 52, the compression spring 53 and the movable wheel 54 to rotate forward together. Due to the inclined surface of the arc-shaped guide rail plate 71, the movable wheel 54 is located at the inclined surface of the arc-shaped guide rail plate 71, and the movable wheel 54 moves along the inclined surface to press the telescopic rod 52. Then the telescopic rod 52 and the movable wheel 54 move along the inner arc surface of the arc-shaped guide rail plate 71 after being pressed, that is, there is a certain small resistance in the opening and closing process of the opening and closing plate. Finally, the movable wheel 54 slides into the groove of the arc-shaped guide rail plate 71 for limiting, at this time, the opening and closing door 3 is at the maximum opening angle, and when the opening and closing door 3 needs to be closed, the movable wheel 54 needs to move out of the groove of the arc-shaped guide rail plate 71, and the groove provides resistance to the movable wheel 54. In this way, a large resistance is formed at both ends of the opening and closing door 3, which avoids the situation that the oven is misoperated by children in a household scene, and at the same time, when the opening and closing door 3 stops during the opening and closing process, the convex disc 2 and the telescopic rod 52 will tend to reset to the end with a smaller angle under the action of the tensile spring 62. That is, through the structure that the two ends of the arc-shaped guide rail plate 71 are recessed and the middle part is protruded, resistance is formed when the movable wheel 54 moves from the recessed two ends of the arc-shaped guide rail plate 71 to the middle part, and there is no resistance to hinder the reset of the movable wheel 54 when the movable wheel 54 moves from the middle part of the arc-shaped guide rail plate 71 to the two ends. When the movable wheel 54 stops at the inner arc surface of the arc-shaped guide rail plate 71, the arc-shaped guide rail plate 71 is divided into three regions, namely the closed region, the hovering region and the fully open region, under the action of the tensile spring 62. If the maximum opening and closing angle of the opening and closing door 3 is 120 degrees, the closed region and the fully open region are 50 degrees respectively, and the middle hovering region is 20 degrees. The movable wheel 54 in the closed region or the fully open region will move towards the fully open or closed state, so that the opening and closing door 3 completes the automatic reset of full opening or full closing, solves the problem that the opening and closing door 3 is not ideal in opening angle and the closing force is difficult to control when the user opens the opening and closing door 3 by hand, and the hovering region can make the opening and closing door 3 in the hovering state, which is suitable for the situation that the opening and closing door 3 needs to be opened to heat the food inside and cannot be too loose to shake.

[0030] Embodiment 2:

[0031] On the basis of embodiment 1, when the opening and closing door 3 is automatically reset under the action of the reset part, as the opening and closing door 3 gradually approaches the box, the reset speed of the telescopic wheel of the opening and closing door 3 is accelerated when the opening and closing door 3 approaches the closed position under the influence of the arc surface of the arc guide rail plate 71; in this process, the reset speed of the telescopic wheel is synchronized with the closing action of the opening and closing door 3, so that the opening and closing door 3 and the box are instantaneously reset and closed, which easily causes the user or the object to be clamped by the quickly closing opening and closing door 3 in the case that the user or the object does not timely evacuate, and there is a certain safety hazard; that is, due to the structure that the arc guide rail plate 71 is recessed at both ends and protruded at the middle, when the movable wheel 54 moves from the middle of the arc guide rail plate 71 to both ends, the movable wheel 54 will produce an instantaneous high-speed impact reset at the end of the closing due to the concentrated release of the elastic potential energy, and the closing force is increased; therefore, on the basis of embodiment 1, as shown in Figure 3 and Figure 5 , a swing rod 75 and a limiting part are further included to solve the problem that the reset speed of the telescopic wheel is synchronized with the closing action of the opening and closing door 3, so that the opening and closing door 3 and the box are instantaneously reset and closed to cause hand clamping; the swing rod 75 is arranged on the arc guide rail plate 71, the limiting rod 81 is arranged on the support plate 72, the swing part includes the fixed rod 73 and the swing rod 75, the fixed rod 73 is fixed to one side of the arc guide rail close to the support plate 72, the swing rod 75 is rotationally connected to the fixed rod 73, the swing rod 75 is tangent to the arc surface of the arc guide rail plate 71, one end of the swing rod 75 is groove-shaped and has a clamping groove outside, and the torsion spring 74 is connected between the swing rod 75 and the arc guide rail plate 71; the limiting part includes the support plate 72, the limiting rod 81, the tension spring 82 and the top rod, the limiting rod 81 slides on the support plate 72, the top rod is fixedly connected to one end of the limiting rod 81 away from the swing rod 75, the end of the top rod close to the swing rod 75 abuts against the telescopic rod 52, and the tension spring 82 is connected between the support plate 72 and the top rod.

[0032] Based on the description in embodiment 1, when the opening and closing door 3 needs to be opened, the movable wheel 54 is located at the groove of the swing rod 75, when the movable wheel 54 moves along the groove at one end of the swing rod 75, the telescopic rod 52 and the movable wheel 54 are retracted under the extrusion of the swing rod 75, and the compression spring 53 is compressed; when the movable wheel 54 moves to the other end of the swing rod 75, the movable wheel 54 will extrude the swing rod 75 to swing around the fixed rod 73, the other end of the swing rod will be clamped into the strip-shaped groove of the arc guide rail plate 71, the swing rod 75 is in close contact with the strip-shaped groove of the arc guide rail plate 71, when the swing rod 75 swings, the outside of the groove of the swing rod 75 extrudes the limiting rod 81 to move away from the arc guide rail plate 71 away from the telescopic rod 52, the tension spring 82 is stretched, the swing rod 75 continues to swing, the outside of the groove of the swing rod 75 no longer extrudes the limiting rod 81, under the action of the tension spring 82, the limiting rod 81 is clamped into the clamping groove of the swing rod 75 to limit the swing rod 75, and reference Figure 5The illustrated, so that the swing rod 75 is in the clamping state, when the movable wheel 54 and the telescopic rod 52 are pulled by the restoring spring 62, due to the tangency of the swing rod 75 and the arc-shaped guide rail plate 71 forming an annular surface, the movable wheel 54 will move along the swing rod 75 in the clamping state, when the telescopic rod 52 and the movable wheel 54 move to the end, at this time the opening and closing door 3 has been in the closed state, the influence of the arc-shaped guide rail plate 71 on the opening telescopic wheel has been eliminated, the speed of the reset is accelerated; the telescopic rod 52 will squeeze the top rod and the limiting rod 81 to move, the limiting rod 81 is out of the clamping slot of the arc-shaped guide rail plate 71, the clamping state of the swing rod 75 is released, and the telescopic rod 52 and the movable wheel 54 are reset under the action of the compression spring 53, the movable wheel 54 is tightly attached to the swing rod 75 to return to the initial state, so as to solve the problem of too fast speed of the opening and closing door 3 when closing, that is, the swing rod 75 will be in the clamping state when the movable wheel 54 resets, and the swing rod 75 and the movable wheel 54 will reset to the initial state when the movable wheel 54 and the opening and closing door 3 move to the end.

[0033] Embodiment 3:

[0034] Because the swing rod 75 is released from the locking when the opening and closing door 3 is in the closed state, and the swing rod 75 will also quickly reset around the fixed rod 73 under the reset action of the compression spring 53, the swing rod 75 will also collide with the arc-shaped guide rail plate 71, therefore, when the opening and closing door 3 is locked, the instantaneous reset force will cause a collision sound, for this, the torsional spring 74 is proposed in this embodiment, the torsional spring 74 is sleeved with the fixed rod 73, and the two ends are connected with the swing rod 75 and the arc-shaped guide rail plate 71 respectively, when the opening and closing door 3 is in the closed state, the tension of the compression spring 53 is greater than the tension of the torsional spring 74, therefore the compression spring 53 will push the telescopic rod 52 and the movable wheel 54 to squeeze the swing rod 75, and the torsional spring 74 is twisted, when the opening and closing door 3 is about to change from the opening state to the closed state, the swing rod 75 is limited by the limiting rod 81, and the torsional spring 74 has been reset, therefore, when the swing rod 75 is released from the locking, the compression spring 53 needs to twist the torsional spring 74 first, and the swing rod 75 can be attached to the arc-shaped guide rail plate 71, therefore the torsional spring 74 can eliminate part of the instantaneous reset force when the compression spring 53 resets, and the swing rod 75 can also eliminate part of the instantaneous impact force on the arc-shaped guide rail plate 71. Finally, it should be explained that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit the protection scope of the present application, although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the essence and scope of the technical solutions of the present application.

Claims

1. An open door structure of an oven, characterized by, The utility model provides a kind of door opening and closing device, including main body, mounting plate (1), tension member and resistance mechanism;Mounting plate (1) is fixed to the box of main body, resistance mechanism is arranged in mounting plate (1), the opening and closing door of main body is hinged with mounting plate (1), one end of tension member is hinged with the opening and closing door (3) of main body, the other end is hinged with resistance mechanism, resistance mechanism includes arc guide rail plate (71) and telescopic piece, telescopic piece is installed in tension member;Telescopic piece includes fixed frame (51), telescopic rod (52), movable wheel (54) and compression spring (53), fixed frame (51) is internally opened and has accommodating groove, telescopic rod (52) is slidably telescopic in accommodating groove, one end of telescopic rod (52) movably connected with sliding wheel, compression spring (53) is connected between fixed frame (51) and telescopic rod (52);The tension member includes convex disc (2), pull rod (4), fixed peg (61) and stretch spring (62), convex disc (2) is rotatably arranged in mounting plate (1), fixed peg (61) is arranged on opening and closing door (3), one side of mounting plate (1) is provided with connecting column, one end of pull rod (4) is hinged with cam, the other end is hinged with connecting column, stretch spring (62) is connected between connecting column and fixed peg (61);The opening and closing movement of opening and closing door (3) drives tension member to rotate and stretch, and the rotation of tension member makes telescopic piece deformable along arc guide rail plate (71) and slide, two arc grooves are formed in arc guide rail plate (71), when opening and closing door (3) is in full closed state, telescopic piece is limited in one of arc grooves, when opening and closing door (3) is in full open state, telescopic piece is limited in the other arc groove.

2. The door opening structure of an oven according to claim 1, wherein The guide rail piece includes arc guide rail plate (71), and the arc guide rail plate (71) has recesses at two ends and a ring-shaped transition structure at a middle portion.

3. The door opening structure of an oven according to claim 1, characterized in that: The door opening and closing device further includes a swing piece and a limiting piece, a swing rod (75) of the swing piece is hinged to the arc guide rail plate (71), and the limiting piece is arranged on the arc guide rail plate (71); when the opening and closing door (3) is in a reset state, the limiting piece limits the swing rod (75), the swing rod (75) is tangent to an arc surface of the arc guide rail plate (71), and the limiting piece is used to limit the instantaneous reset force when the opening and closing door (3) and the telescopic wheel are closed.

4. The door opening structure of an oven according to claim 3, wherein The swing piece further includes a torsion spring (74) sleeved between a fixed rod (73) and the swing rod (75) to offset part of the instantaneous reset force.

5. The door opening structure of an oven according to claim 4, wherein The limiting piece includes a support plate (72), a limiting rod (81), and a top rod (83), the support plate (72) is arranged on the arc guide rail plate (71), the limiting rod (81) slides on the support plate (72), and the top rod (83) is arranged at one end of the limiting rod (81) and is in contact with the telescopic rod (52) at the other end.

6. The door opening structure of an oven according to claim 5, wherein A slot is formed in one side of the swing rod (75), and when the opening and closing door (3) is in the reset state, the limiting rod (81) is clamped into the slot of the swing rod (75).

7. The door opening structure of an oven according to claim 4, wherein A groove is formed at one end of the swing rod (75) and is in contact with the movable wheel (54) of the telescopic piece, and the other end is higher than an inner arc surface of the arc guide rail plate (71).

8. The door opening structure of an oven according to claim 7, wherein The compression spring (53) has a tension greater than the torsion of the torsion spring (74), when the opening and closing door (3) is in the closed state, the compression spring (53) pushes the telescopic rod (52) and the movable wheel (54) to press the swing lever (75), and the torsion spring (74) is twisted.

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