Sealing door lock structure of steaming oven

Abstract

The utility model discloses a sealing door lock structure of a steaming oven, which comprises a box body and a box door, a door lock main body is arranged on the box body, a spring bolt is arranged on the box door, and after the box door is closed, the door lock main body is inserted into the spring bolt; the door lock body comprises a driving unit, and a bolt is arranged at the output end of the driving unit. The device further comprises a trigger device, the trigger device comprises a mounting plate, a first switch and a trigger unit, and the trigger unit is hinged to the mounting plate. The triggering unit comprises a first triggering end and a second triggering end, the first triggering end is exposed out of the box body, when the box door is closed, the first triggering end is pressed, the triggering unit is driven to rotate, the second triggering end triggers the first switch, the first switch sends an electric signal to the driving unit, and the driving unit drives the bolt to be connected with the spring bolt in an inserted mode. When the oven door is closed, the door lock body is connected with the spring bolt in an inserted mode, the oven door is prevented from being jacked open by steam pressure in the steaming oven, air leakage is avoided, and the sealing performance of the oven door is improved.

Description

Technical Field

[0001] The utility model belongs to the field of steam ovens, and in particular relates to a sealing door lock structure of a steam oven. Background Art

[0002] A steam oven is a cooking appliance that combines steaming and baking functions, cooking food through heating elements and steam. However, most existing steam oven doors have hinges that provide resistance to prevent the door from opening. During use, a certain amount of pressure builds up inside the oven. When this pressure overcomes the resistance, the door is pushed open, causing air leaks.

[0003] Prior art, such as patent publication CN204804544U, discloses an oven door hinge comprising a pull arm hinged to the oven door, with a tension spring attached to the pull arm. The spring pulls the pull arm, thereby closing the oven door. Steam ovens generate outward steam pressure during use. When this door hinge is used in a steam oven, the steam pressure may exceed the tension of the tension spring, causing the steam pressure to push the oven door open, posing a risk of air leakage. Summary of the Invention

[0004] In response to the problems in the existing technology, the utility model proposes a sealed door lock structure for a steam oven. When the oven door is closed, the door lock body is driven to engage with the lock tongue to prevent the oven door from being pushed open by the steam pressure in the steam oven, causing air leakage, thereby improving the sealing of the oven door.

[0005] The present invention is implemented as follows: a sealed door lock structure for a steam oven, comprising a housing and a door hingedly connected to the housing. The housing is provided with a door lock body, and the door is provided with a lock tongue adapted to fit the door lock body. When the door is closed, the door lock body engages with the lock tongue. The door lock body and the lock tongue ensure that the door is securely locked when closed, effectively preventing accidental opening or loosening of the door due to steam pressure, further improving the sealing performance of the steam oven, reducing heat and steam leakage, and ensuring temperature control and food quality during cooking.

[0006] The door lock body includes a driving unit, and a latch is provided at the output end of the driving unit. The driving unit drives the latch to extend or retract, so that the latch is plugged into or disengaged from the lock tongue; the driving unit enables the door lock body to be automatically locked and unlocked, thereby improving the operating convenience of the box door.

[0007] The invention also includes a trigger device, which is installed on the box body and includes a mounting plate, a first switch, and a trigger unit. The mounting plate is fixed to the box body, the first switch is electrically connected to the drive unit, and the trigger unit is hinged to the mounting plate. The trigger unit includes a first trigger end and a second trigger end. The first trigger end is exposed outside the box body. When the box door is closed, it presses against the first trigger end, driving the trigger unit to rotate, causing the second trigger end to trigger the first switch. The first switch sends an electrical signal to the drive unit, causing the drive unit to drive the latch pin to engage with the deadbolt. By having the trigger unit physically trigger the first switch when the box door is closed, the signal transmission path is shortened, thereby improving the accuracy and reliability of the triggering action.

[0008] Preferably, the periphery of the end where the latch pin and the lock tongue are connected is gradually enlarged from the end to the middle, forming a guide portion. The guide portion is used to guide the latch pin during connection. On the one hand, it can make the latch pin more easily connected to the lock tongue, prevent the latch pin and the lock tongue from being unable to connect due to dimensional errors and installation errors, and improve the reliability of the latch pin. On the other hand, since the box door needs to be tightly attached to the box body after closing, the guide portion can also further press the box door against the box body when the latch pin and the lock tongue are connected, further improving the sealing of the box body.

[0009] Specifically, the door is further provided with an annular sealing groove, the opening of which faces the housing. A sealing strip is further disposed within the sealing groove, protruding from the groove. When the door is closed, the guide portion engages with the lock tongue wedge, causing the sealing strip to deform under pressure between the door and the housing. The sealing strip is made of flexible silicone. When the door is closed, it elastically deforms under the pressure of the door and the housing, filling the gap between the two and further improving the door's sealing properties.

[0010] Preferably, the drive unit is a single-control solenoid valve comprising an electromagnet, a second elastic unit, and a movable unit; the movable unit reciprocates under the drive of the electromagnet and the second elastic unit. The reciprocating motion of the movable unit is achieved by controlling the power on and off of the electromagnet, simplifying the control process and control structure, reducing the cost of the drive unit, and improving the ease of installation and maintenance of the drive unit.

[0011] Preferably, a mounting bracket is welded to the housing, and the door lock body is mounted on the mounting bracket; the top of the mounting bracket is recessed downward to form a reinforcing rib. Since steam pressure exerts a tensile force on the door lock body when the door is exposed to steam, the reinforcing rib serves to increase the rigidity of the mounting bracket, preventing deformation during use and thereby increasing its service life. Furthermore, since the housing is made of sheet metal with a relatively thin wall thickness, if the mounting bracket is secured by threading, the number of threads required for tightening is relatively small, and there is a risk of the door lock body falling off when subjected to stress. Securely securing the mounting bracket by welding improves its stability.

[0012] Preferably, the device further comprises a first elastic unit, one end of which is hinged to the mounting plate and the other end of which is elastically connected to the trigger unit, driving the trigger unit to rotate and reset. The first elastic unit is used to automatically reset the trigger unit when the door is opened. When the door is closed, the first elastic unit obtains elastic potential energy due to the rotation of the trigger unit. When the door is opened, the first elastic unit releases the elastic potential energy, driving the trigger unit to automatically reset, thereby improving the convenience of the trigger unit.

[0013] Preferably, the trigger unit is provided with an anti-slip portion, and the mounting plate is provided with a blocking portion adapted to the anti-slip portion. The anti-slip portion is engaged with the blocking portion to prevent the trigger unit from moving along the extension direction of the central axis of the hinge, thereby preventing the second trigger end from being misaligned with the first switch, thereby improving the reliability of the trigger unit.

[0014] Specifically, the blocking portion is hook-shaped and includes a transition surface provided at one end of the blocking portion, the transition surface gradually increasing from the end portion to the middle portion, and the transition surface is used for transition when installing the trigger unit to prevent the trigger unit from being blocked by the blocking portion during installation, thereby improving the installation convenience of the trigger unit; it also includes a blocking surface adapted to the anti-detachment portion, and the anti-detachment portion is rotatably mortgaged to the blocking surface, so that the anti-detachment portion not only ensures the firmness of the connection, but also takes into account the flexibility of use, thereby avoiding operational inconvenience or damage caused by excessive fixation.

[0015] Preferably, the trigger unit is further provided with a limiting hole, and the mounting plate is provided with a limiting post corresponding to the limiting hole, and the limiting post is sleeved into the limiting hole. The limiting hole limits the travel of the trigger unit, preventing the force applied to the first trigger end toward the rotation center of the trigger unit when the door contacts the first trigger end, thereby preventing the trigger unit from being unable to rotate, thereby improving the reliability and smoothness of rotation of the trigger unit.

[0016] Preferably, the housing is further provided with a hinge, one end of which extends into and is fixedly connected to the housing; the other end of which is provided with a damping structure and is hingedly connected to the door via the damping structure. This damping structure can significantly reduce the risk of the door closing or opening suddenly due to improper or negligent operation, thereby reducing the risk of pinching or other accidental injuries and improving user safety. Furthermore, it prevents the door from impacting due to inertia when opening and closing, protecting the housing and door from damage.

[0017] Beneficial effects of the utility model:

[0018] The utility model proposes a sealing door lock structure for a steam oven. When the oven door is closed, the door lock body is driven to engage with the lock tongue to prevent the oven door from being pushed open by the steam pressure in the steam oven, effectively preventing the oven door from accidentally opening or loosening due to the steam pressure, further improving the sealing performance of the steam oven, reducing the leakage of heat and steam, and ensuring temperature control and food quality during the cooking process; at the same time, by physically triggering the first switch, the signal transmission path is shortened, thereby improving the accuracy and reliability of the triggering action. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an overall schematic diagram of the sealed door lock structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the interior of the box of the sealed door lock structure of the present invention;

[0021] Figure 3 for Figure 2 An enlarged schematic diagram of point a;

[0022] Figure 4 This is a schematic diagram of the triggering device of the sealed door lock structure of the present invention;

[0023] Figure 5 for Figure 4 An enlarged schematic diagram of point b;

[0024] Figure 6 Schematic diagram of the latch of the sealed door lock structure of the present invention.

[0025] Reference numerals:

[0026] 1. Box body; 2. Box door; 11. Door lock body; 12. Trigger device; 13. Hinge; 21. Lock tongue; 111. Drive unit; 112. Latch; 121. Mounting plate; 122. Trigger unit; 123. First switch; 1121. Guide portion; 1211. Blocking portion; 1212. Limiting column; 1221. First trigger end; 1222. Second trigger end; 1223. Anti-slip portion; 1224. Limiting hole; 12111. Transition surface; 12112. Blocking surface. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] like Figures 1-6 As shown, a sealing door lock structure of a steam oven comprises a box body 1 and a door 2 hinged to the box body 1.

[0029] In this embodiment, the housing 1 is further provided with a hinge 13. One end of the hinge 13 extends into the housing 1 and is fixedly connected thereto; the other end is provided with a damping structure, which is hingedly connected to the door 2 via the damping structure. This damping structure significantly reduces the risk of the door 2 closing or opening suddenly due to improper or negligent operation, thereby reducing the risk of pinching or other accidental injuries and improving user safety. Furthermore, it prevents the door 2 from impacting due to inertia when opening and closing, protecting the housing 1 and door 2 from damage.

[0030] The housing 1 is provided with a door lock body 11, and the door 2 is provided with a lock tongue 21 adapted to fit the door lock body 11. When the door 2 is closed, the door lock body 11 engages with the lock tongue 21. The door lock body 11 and the lock tongue 21 ensure that the door 2 is securely locked when closed, effectively preventing the door 2 from accidentally opening or loosening due to steam pressure. This further improves the sealing performance of the steam oven, reduces heat and steam leakage, and ensures temperature control and food quality during cooking.

[0031] In this embodiment, the peripheral side of the end of the latch pin 112 that is plugged into the lock tongue 21 gradually increases from the end to the middle, forming a guide portion 1121. The guide portion 1121 is used to guide the latch pin 112 when plugging into the lock tongue 21. On the one hand, it can make it easier for the latch pin 112 to plug into the lock tongue 21, preventing dimensional errors and installation errors from causing the latch pin 112 and lock tongue 21 to be unable to plug into each other, thereby improving the reliability of the latch pin 112. On the other hand, since the door 2 needs to be tightly attached to the box body 1 after closing, the guide portion 1121 can also further press the door 2 against the box body 1 when the latch pin 112 and lock tongue 21 are plugged into each other, further improving the sealing performance of the box body 1.

[0032] In this embodiment, the door 2 is further provided with an annular sealing groove, the opening of which faces the housing 1. A sealing strip is further provided within the sealing groove, protruding from the groove. When the door 2 is closed, the guide portion 1121 is connected to the locking tongue 21 in an oblique wedge-like manner, causing the sealing strip to deform under pressure between the door 2 and the housing 1. The sealing strip is made of flexible silicone. When the door 2 is closed, the sealing strip elastically deforms under the pressure of the door 2 and the housing 1, filling the gap between the door 2 and the housing 1 and further improving the sealing performance of the door.

[0033] In this embodiment, a mounting bracket is welded to the housing 1, and the door lock body 11 is mounted on the mounting bracket. The top of the mounting bracket is recessed downward to form a reinforcing rib. Since steam pressure exerts a tensile force on the door lock body 11 when the door 2 is subjected to steam, the reinforcing rib serves to increase the rigidity of the mounting bracket, preventing deformation during use and thereby increasing its service life. Furthermore, since the housing 1 is made of sheet metal with a relatively thin wall thickness, if the mounting bracket is fixed by threading, the number of threads required for tightening is relatively small, and there is a risk of the door lock body 11 falling off when subjected to force. Fixing the mounting bracket by welding improves its stability.

[0034] The door lock body 11 includes a driving unit 111, and a latch 112 is provided at the output end of the driving unit 111. The driving unit 111 drives the latch 112 to extend or retract, so that the latch 112 is plugged into or disengaged from the lock tongue 21; the driving unit 111 enables the door lock body 11 to be automatically locked and unlocked, thereby improving the operating convenience of the box door 2.

[0035] In this embodiment, the drive unit 111 is a single-control solenoid valve comprising an electromagnet, a second elastic unit, and a movable unit. The movable unit reciprocates under the drive of the electromagnet and the second elastic unit. The reciprocating motion of the movable unit is achieved by controlling the power on and off of the electromagnet, simplifying the control process and structure. This reduces the cost of the drive unit 111 while also improving installation and maintenance convenience.

[0036] In this embodiment, the second elastic unit is a compression spring;

[0037] The door 2 further includes a trigger device 12, which is mounted on the housing 1 and includes a mounting plate 121, a first switch 123, and a trigger unit 122. The mounting plate 121 is fixedly attached to the housing 1. The first switch 123 is electrically connected to the drive unit 111. The trigger unit 122 is hingedly connected to the mounting plate 121. The trigger unit 122 includes a first trigger end 1221 and a second trigger end 1222. The first trigger end 1221 is exposed outside the housing 1. When the door 2 is closed, the first trigger end 1221 presses against the first trigger end 1221, driving the trigger unit 122 to rotate, causing the second trigger end 1222 to trigger the first switch 123. The first switch 123 sends an electrical signal to the drive unit 111, causing the drive unit 111 to drive the latch 112 to engage with the lock tongue 21. By having the trigger unit 122 physically trigger the first switch 123 when the door 2 is closed, the signal transmission path is shortened, thereby improving the accuracy and reliability of the triggering action.

[0038] In this embodiment, the trigger unit 122 is provided with an anti-slip portion 1223, and the mounting plate 121 is provided with a blocking portion 1211 adapted to the anti-slip portion 1223. The anti-slip portion 1223 is engaged with the blocking portion 1211 to prevent the trigger unit 122 from moving along the extension direction of the central axis of the hinge, thereby preventing the second trigger end 1222 and the first switch 123 from being misaligned, thereby improving the reliability of the trigger unit 122.

[0039] Specifically, the blocking portion 1211 is hook-shaped and includes a transition surface 12111 provided at one end of the blocking portion 1211, and the transition surface 12111 gradually increases from the end to the middle, and the transition surface 12111 is used for transition when installing the trigger unit 122, to prevent the trigger unit 122 from being blocked by the blocking portion 1211 during installation, thereby improving the installation convenience of the trigger unit 122; it also includes a blocking surface 12112 adapted to the anti-detachment portion 1223, and the anti-detachment portion 1223 is rotatably mortgaged on the blocking surface 12112, so that the anti-detachment portion 1223 not only ensures the firmness of the connection, but also takes into account the flexibility of use, thereby avoiding operational inconvenience or damage caused by excessive fixation.

[0040] In this embodiment, a first elastic unit is further included. One end of the first elastic unit is hinged to the mounting plate 121, and the other end is elastically connected to the trigger unit 122, driving the trigger unit 122 to rotate and reset. The first elastic unit is used to automatically reset the trigger unit 122 when the door 2 is opened. When the door 2 is closed, the first elastic unit obtains elastic potential energy due to the rotation of the trigger unit 122. When the door 2 is opened, the first elastic unit releases the elastic potential energy, driving the trigger unit 122 to automatically reset, thereby improving the convenience of the trigger unit 122.

[0041] In this embodiment, the first elastic unit is a tension spring.

[0042] In this embodiment, the trigger unit 122 is further provided with a limiting hole 1224, and the mounting plate 121 is provided with a limiting post 1212 corresponding to the limiting hole 1224, and the limiting post 1212 is sleeved into the limiting hole 1224. The limiting hole 1224 limits the travel of the trigger unit 122, preventing the force applied to the first trigger end 1221 from being directed toward the rotation center of the trigger unit 122 when the door 2 contacts the first trigger end 1221, thereby preventing the trigger unit 122 from being unable to rotate, thereby improving the reliability and smoothness of rotation of the trigger unit 122.

[0043] Based on the disclosure and teachings of the above description, those skilled in the art may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and modifications and variations of the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although certain specific terms are used in this description, these terms are for convenience only and do not constitute any limitation to the present invention.

Claims

1. A sealing door lock structure for a steam oven, comprising a box body and a door hinged to the box body, characterized in that: The box body is provided with a door lock body, and the box door is provided with a lock tongue adapted to the door lock body. When the box door is closed, the door lock body is plugged into the lock tongue. The door lock body includes a driving unit, and an output end of the driving unit is provided with a latch, and the driving unit drives the latch to extend or retract, so that the latch is plugged into or disengaged from the lock tongue; It also includes a trigger device, which is arranged on the box body and includes a mounting plate, a first switch and a trigger unit. The mounting plate is fixed to the box body, the first switch is electrically connected to the drive unit, and the trigger unit is hinged on the mounting plate; the trigger unit includes a first trigger end and a second trigger end, the first trigger end is exposed outside the box body, and when the box door is closed, the first trigger end is pressed against the first trigger end, driving the trigger unit to rotate, so that the second trigger end triggers the first switch, and the first switch sends an electrical signal to the drive unit, so that the drive unit drives the bolt to be plugged into the lock tongue.

2. The sealing door lock structure of a steam oven according to claim 1, characterized in that: The peripheral side of one end of the latch pin and the lock tongue is gradually enlarged from the end to the middle to form a guide portion.

3. The sealing door lock structure of a steam oven according to claim 2, characterized in that: The box door is also provided with an annular sealing groove, the opening of the sealing groove faces the box body, and a sealing strip is also provided in the sealing groove, and the sealing strip protrudes from the sealing groove; when the box door is closed, the guide part is connected with the lock tongue oblique wedge, so that the sealing strip is pressed and deformed between the box door and the box body.

4. The sealing door lock structure of a steam oven according to claim 1, characterized in that: The driving unit is a single-control solenoid valve, which includes an electromagnet, a second elastic unit and a movable unit; the movable unit reciprocates under the drive of the electromagnet and the second elastic unit.

5. The sealing door lock structure of a steam oven according to claim 1, characterized in that: A mounting bracket is also welded on the box body, and the door lock body is mounted on the mounting bracket; the top of the mounting bracket is concave downward to form a reinforcing rib.

6. The sealing door lock structure of a steam oven according to claim 1, characterized in that: It also includes a first elastic unit, one end of which is hinged to the mounting plate, and the other end of which is elastically connected to the trigger unit to drive the trigger unit to rotate and reset.

7. The sealing door lock structure of a steam oven according to claim 1, characterized in that: The trigger unit is provided with an anti-slip portion, and the mounting plate is provided with a blocking portion adapted to the anti-slip portion, and the anti-slip portion is engaged with the blocking portion.

8. The sealing door lock structure of a steam oven according to claim 7, characterized in that: The blocking portion is hook-shaped and includes a transition surface provided at one end of the blocking portion, the transition surface gradually increasing from the end to the middle; it also includes a blocking surface adapted to the anti-slip portion, the anti-slip portion is rotatably secured to the blocking surface.

9. The sealing door lock structure of a steam oven according to claim 1, characterized in that: The trigger unit is further provided with a limiting hole, and the mounting plate is provided with a limiting column corresponding to the limiting hole, and the limiting column is sleeved in the limiting hole.

10. The sealing door lock structure of a steam oven according to claim 1, characterized in that: The box body is further provided with a hinge, one end of which extends into the box body and is fixedly connected to the box body; the other end of which is provided with a damping structure and is hinged to the box door through the damping structure.

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