Steaming oven and hinge structure of flip-down door thereof

Abstract

The invention provides a steaming oven and a flip-down door hinge structure thereof. The flip-down door hinge structure comprises a connecting piece, a shell and a driver. The shell is provided with a first rotating shaft and a second rotating shaft which are rotationally connected with the shell, the first rotating shaft is sleeved with a first gear, the second rotating shaft is sleeved with a second gear, the first gear is in meshed connection with the second gear, one end of the first rotating shaft is in transmission connection with the driver, and the other end of the first rotating shaft is in transmission connection with the motor. The driver is further used for being in communication connection with a control panel of the steaming oven. The first end of the connecting piece is hinged to the first end of the shell, the first end of the connecting piece is provided with teeth extending along an arc, the teeth are connected with the second gear in a meshed mode, and the second end of the connecting piece is used for being connected with a door body of the steaming oven. According to the hinge structure, through gear transmission, the transmission stability and reliability can be guaranteed, noise can be reduced, the door body can be opened or closed at a constant speed, the structure is simple, installation is easy, and arrangement is compact.

Description

Technical Field

[0001] The invention relates to the technical field of steam oven hardware, and in particular to a steam oven and a hinge structure of a downward-flipping door thereof. Background Art

[0002] Traditional bottom-flip steam ovens generally use spring-type door hinges, which open the door by overcoming the spring deformation force manually and close the door with the help of the spring's restoring force.

[0003] Since the door of a steam oven is usually heavy, and in order to avoid water leakage and air leakage due to the door not closing tightly, the hinge spring used is usually thicker and has a larger spring force. As a result, during the stretching and rebounding process of the hinge spring, the user needs to overcome the spring tension to open and close the door, which is more laborious to use, that is, the door cannot be opened and closed at a uniform speed, and it is easy to generate loud working noise. Not only is the user experience poor, but as the frequency of use increases, the spring force will decrease and the service life of the hinge spring will be shortened. If the spring is damaged, the hinge will get stuck and the door cannot be opened or closed, and the reliability performance is poor. In addition, the heavier the door, the longer the hinge spring will be, the internal parts will occupy a larger space and are arranged tightly, with fewer gaps, making assembly and maintenance more difficult. Summary of the invention

[0004] In view of the above, the object of the present invention is to provide a steam oven and a bottom-flip door hinge structure thereof, which can replace the hinge spring structure adopted in the above-mentioned traditional steam ovens, so as to solve the problems of hinge springs, such as the difficulty in assembling and maintaining due to the large space occupied by internal parts and the close arrangement.

[0005] In order to solve the above technical problems, the technical solution used in the present invention is:

[0006] The bottom-flip door hinge structure of a steam oven described in the present invention comprises a connecting piece, a shell and a driver;

[0007] The housing is provided with a first rotating shaft and a second rotating shaft both rotatably connected thereto, the first rotating shaft sleeve is provided with a first gear, the second rotating shaft sleeve is provided with a second gear, the first gear is meshedly connected with the second gear, one end of the first rotating shaft is transmission-connected with the driver, and the driver is also used for communication connection with the control panel of the steam oven;

[0008] The first end of the connecting member is hinged to the first end of the shell, and the first end of the connecting member is provided with teeth extending along a circular arc, the teeth are meshed and connected with the second gear, and the second end of the connecting member is used to connect to the door body of the steam oven.

[0009] Preferably, the shell has a U-shaped cavity, and the first gear and the second gear are both located in the cavity.

[0010] Further preferably, a third rotating shaft is provided at the first end of the shell, the first end of the connecting member is located between the side walls of the shell, the third rotating shaft passes through the side walls of the shell and the connecting member, and the third rotating shaft is a hinge axis hinged to the first end of the connecting member and the shell.

[0011] Further preferably, the first end of the shell is provided with a first stop portion and a second stop portion, and the first end of the connecting member is correspondingly provided with a first abutment portion and a second abutment portion, and when the connecting member rotates with the third rotating shaft as the center axis to drive the door body to close, the first abutment portion abuts against the first stop portion, and after the connecting member rotates with the third rotating shaft as the center axis to drive the door body to open, the second abutment portion abuts against the second stop portion.

[0012] Further preferably, a movable angle range of the connecting member between the first stop portion and the second stop portion is 90°.

[0013] Preferably, a first convex key is provided on the circumferential surface of the first rotating shaft along its axial direction, and a first groove is provided on the inner ring of the first gear, and the first convex key is matched and connected with the first groove;

[0014] And / or, a second convex key is provided on the circumferential surface of the second rotating shaft along its axial direction, a second convex key is provided on the inner ring of the second gear, and the second convex key is matched and connected with the second groove.

[0015] Preferably, the downward-flipping door hinge structure further comprises a buffer device, and two ends of the buffer device are detachably connected to the first end of the connecting member and the second end of the shell, respectively.

[0016] Further preferably, the buffer device is a telescopic damper.

[0017] Preferably, the first gear and the second gear are made of plastic;

[0018] And / or, the outer diameters of the first gear and the teeth are equal;

[0019] And / or, the connecting member and the teeth are an integrated structure.

[0020] Another object of the present invention is to provide a steam oven, comprising a door body, a main box body and a control panel, and also comprising a control screen or control keys, wherein the main box body is provided with a downward-flipping door hinge structure of the aforementioned steam oven, and the second end of the connecting member in the downward-flipping door hinge structure extends out of the main box body and is detachably connected to the door body, the driver of the downward-flipping door hinge structure is communicatively connected to the control panel, and the control screen or control keys are electrically connected to the control panel.

[0021] Compared with the prior art, the beneficial effects of the hinge structure of the bottom flip door of the steam oven described in the present invention are mainly reflected in:

[0022] The hinge structure of the present invention is provided with the connecting member and the first gear and the second gear that are meshed and connected, and the connecting member is provided with teeth extending along a circular arc, and the teeth are meshed and connected with the second gear. Compared with realizing the door body opening and closing by the stretching and rebound force of the spring, the hinge structure of the present invention is driven by gears during the opening and closing process of the steam oven door body, which can ensure the stability and reliability of the transmission and also reduce noise;

[0023] By arranging the driver to drive the first rotating shaft to rotate, the first gear can be driven to rotate at a constant speed, and then the second gear and the connecting member can be driven to rotate at a constant speed, so that the door body can be opened or closed at a constant speed without manual operation, and the risk of hitting or pinching a human body due to the inability to open or close the door body at a constant speed caused by the weight of the door during manual operation can be avoided;

[0024] The transmission structure of the hinge structure of the present invention is mainly composed of the driver, the connecting piece, the first gear and the second gear, and has a simple structure, simple installation and compact layout, which greatly reduces the total space occupied by the transmission structure and the space occupied in the shell, and will not change significantly due to changes in the weight of the door body, so that sufficient installation and maintenance space can be reserved, which greatly facilitates assembly and subsequent maintenance work. Therefore, it can solve the problems of hinge springs being laborious, unable to open and close the door body at a uniform speed, loud working noise, poor reliability, and internal parts occupying a large space and being tightly arranged, making assembly and maintenance difficult. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and other purposes, features and advantages of the present invention will become more clear by more specific description of the preferred embodiments of the present invention shown in the accompanying drawings. The same reference numerals indicate the same parts in all the accompanying drawings, and the accompanying drawings are not deliberately scaled to the actual size, and the focus is on illustrating the main purpose of the present invention.

[0026] Figure 1 A three-dimensional structure of a hinge structure for a downward flip door of a steam oven provided by an embodiment of the present invention Figure 1 ;

[0027] Figure 2 A three-dimensional structure of a hinge structure for a downward flip door of a steam oven provided by an embodiment of the present invention Figure 2 ;

[0028] Figure 3 for Figure 1 Internal structure view;

[0029] Figure 4 for Figure 3 The local structure diagram in ;

[0030] Description of the drawings: connecting member 1, housing 2, first rotating shaft 3, second rotating shaft 4, first gear 5, second gear 6, teeth 7, third rotating shaft 8, first stop portion 9, second stop portion 10, first abutting portion 11, second abutting portion 12, first cam 13, first groove 14, damper 15, driver 16. DETAILED DESCRIPTION

[0031] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it. However, the embodiments cited are not intended to limit the present invention. In the present embodiment, it should be understood that the orientations or positional relationships indicated by terms such as "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", and "outside" are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0032] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to the other element and integrated therewith, or there may be an intermediate element at the same time. The terms "installed", "one end", "the other end" and similar expressions used in the present invention are for illustrative purposes only.

[0033] This embodiment provides a hinge structure for a downward-flipping door of a steam oven, such as Figures 1 to 4 As shown, it includes a connecting member 1, a housing 2 and a driver 16;

[0034] The housing 2 is provided with a first rotating shaft 3 and a second rotating shaft 4 both rotatably connected thereto, the first rotating shaft 3 is sleeved with a first gear 5, the second rotating shaft 4 is sleeved with a second gear 6, the first gear 5 is meshedly connected with the second gear 6, one end of the first rotating shaft 3 is transmission-connected with a driver 16, and the driver 16 is also used for communication connection with a control panel of the steam oven;

[0035] The first end of the connecting member 1 is hinged to the first end of the shell 2, and the first end of the connecting member 1 is provided with teeth 7 extending along a circular arc, the teeth 7 are meshed and connected with the second gear 6, and the second end of the connecting member 1 is used to connect to the door of the steam oven.

[0036] The hinge structure of this embodiment is provided with a connecting member 1 and a first gear 5 and a second gear 6 that are meshed and connected, and a tooth 7 extending along a circular arc is provided on the connecting member 1, and the tooth 7 is meshed and connected with the second gear 6. Compared with realizing the door body opening and closing by the stretching and rebound force of the spring 15, the hinge structure of the present invention is driven by gears during the opening and closing process of the steam oven door body, which can ensure the stability and reliability of the transmission and also reduce noise;

[0037] By arranging the driver 16 to drive the first rotating shaft 3 to rotate, the first gear 5 can be driven to rotate at a uniform speed, and then the second gear 6 and the connecting member 1 can be driven to rotate at a uniform speed, so that the door of the steam oven can be opened or closed at a uniform speed without the need to open or close the door manually, and the risk of hitting or pinching a human body due to the inability to open or close the door at a uniform speed due to the weight of the door during the manual opening and closing of the door can be avoided;

[0038] The transmission structure of the hinge structure of this embodiment is mainly composed of a driver 16, a connecting member 1, a first gear 5 and a second gear 6. It has a simple structure, simple installation and compact layout, which greatly reduces the total space occupied by the transmission structure and the space occupied in the shell 2, and will not change significantly due to changes in the weight of the door body, so that sufficient installation and maintenance space can be reserved, which greatly facilitates assembly and subsequent maintenance work. Therefore, it can solve the problems of hinge springs being laborious, unable to open and close the door body at a uniform speed, loud working noise, poor reliability, and internal parts occupying a large space and being tightly arranged, making assembly and maintenance difficult.

[0039] It should be noted that the outer diameters of the first gear 5 and the teeth 7 are equal, that is, the teeth 7 and the first gear 5 can be meshed with the second gear 6 to ensure that the second gear 6 can rotate normally, and the rotation speed of the connecting member 1 can be determined by controlling the driving speed of the driver 16, so that the driver 16 and the door body can move synchronously. Specifically, a forward and reverse driving motor is arranged in the driver 16, and the driving motor is communicatively connected with the control board of the steam oven to receive the control signal of the control board, and the output end of the driving motor is drivingly connected with the first rotating shaft 3.

[0040] In a preferred embodiment, Figure 2 and Figure 3 As shown, the housing 2 has a U-shaped cavity, and the first gear 5 and the second gear 6 are both located in the cavity, so that both ends of the first rotating shaft 3 and the second rotating shaft 4 can be supported on both sides of the cavity and thus be stably supported. Specifically, the cross section of the housing 2 is U-shaped, which can maximize the space of the cavity, while also reducing the material used for the housing 2 and reducing the weight of the hinge structure. In addition, in the use state, the opening of the U-shaped housing 2 faces downward and the bottom surface faces upward, which can prevent impurities such as dust and residue from falling into the cavity and affecting the normal operation of the hinge structure.

[0041] Further preferably, the first end of the shell 2 is provided with a third rotating shaft 8, the first end of the connecting member 1 is located between the side walls of the shell 2, the third rotating shaft 8 penetrates the side walls of the shell 2 and the connecting member 1, and the third rotating shaft 8 is a hinge shaft at which the first end of the connecting member 1 is hinged to the shell 2. In this embodiment, the connecting member 1, the first gear 5 and the second gear 6 are all arranged in the cavity of the shell 2, so that the connecting member 1, the first gear 5 and the second gear 6 can be arranged in the same plane, which can improve the transmission efficiency and reliability. It should be noted that in this embodiment, the connecting member 1 can be circumferentially fixedly connected to the third rotating shaft 8, and the third rotating shaft 8 is rotationally connected to the shell 2; the connecting member 1 can also be rotationally connected to the third rotating shaft 8, and the third rotating shaft 8 is circumferentially fixedly connected to the shell 2. Compared with the former scheme, the latter scheme can make the door body rotate more stably in the process of opening or closing the door body, and can avoid the shaking of the door body due to the rotation of the third rotating shaft 8.

[0042] In a further preferred embodiment, the first end of the housing 2 is provided with a first stopper 9 and a second stopper 10, and the first end of the connector 1 is correspondingly provided with a first abutting portion 11 and a second abutting portion 12. When the connector 1 rotates with the third rotating shaft 8 as the central axis to drive the door body to close, the first abutting portion 11 abuts against the first stopper 9. After the connector 1 rotates with the third rotating shaft 8 as the central axis to drive the door body to open, the second abutting portion 12 abuts against the second stopper 10. In this embodiment, the rotation angle range of the connector 1 can be limited by the cooperation of the first abutting portion 11 with the first stopper 9 and the cooperation of the second abutting portion 12 with the second stopper 10, thereby limiting the angle of opening and closing of the door body. In a specific embodiment, the movable angle range of the connector 1 between the first stopper 9 and the second stopper 10 is preferably 90°, so that the rotation angle range of the connector 1 and the door body can be limited to 0° to 90°.

[0043] In another preferred embodiment, Figure 4 As shown, the first rotating shaft 3 is provided with a first convex key 13 along its axial direction on its circumferential surface, the first gear 5 is provided with a first groove 14 on its inner ring, and the first convex key 13 is matched and connected with the first groove 14; and / or, the second rotating shaft 4 is provided with a second convex key (not shown in the figure) along its axial direction on its circumferential surface, the second gear 6 is provided with a second groove (not shown in the figure) on its inner ring, and the second convex key is matched and connected with the second groove. On the one hand, this embodiment can avoid the problem of high processing accuracy requirements caused by the tight fit connection between the first rotating shaft 3 and the first gear 5 or the second rotating shaft 4 and the second gear 6, and reduce the difficulty of assembling the two. On the other hand, it can also avoid slipping while realizing quick assembly of the two, and ensure reliable transmission of the two.

[0044] In another preferred embodiment, Figure 2 and Figure 3As shown, the hinge structure of the downward-flipping door also includes a buffer device, the two ends of which are detachably connected to the first end of the connecting member 1 and the second end of the shell 2, respectively. In this embodiment, the buffer device can play a buffering role when the connecting member 1 rotates as the door body is opened or closed, and can avoid the danger of hitting or pinching the human body caused by the failure of the driver 16 to open and close the door at a uniform speed. For example, when the driver 16 is damaged, it can prevent the user from being hit and injured by the door body falling down due to the accelerated rotation of the door body due to the weight when the door body is opened. Preferably, the buffer device is a multi-stage telescopic damper 15, one end of which is connected to the first end of the connecting member 1, as shown in FIG. Figure 3 In the specific embodiment shown, the third rotating shaft 8 passes through one end of the damper 15 and then detachably connects the one end of the damper 15 to the connecting member 1, and the other end of the damper 15 is detachably connected to the second end of the shell 2 by a screw, so that it is easy to remove and replace the damper 15. When the hinge structure of this embodiment is in use, the damper 15 is located below the first gear 5 and the second gear 6, so that the three can be installed in an orderly manner in space, and the expansion and contraction changes of the damper 15 will not affect the normal operation of each gear.

[0045] In another preferred embodiment, since the first gear 5 and the second gear 6 in the hinge structure of this embodiment are not subject to other external forces except the transmission force of the connecting member 1, on the one hand, no working noise will be generated, and on the other hand, the strength requirements for the materials of the first gear 5 and the second gear 6 are relatively low. The material of the first gear 5 and the second gear 6 can be plastic, which further reduces costs and simplifies the production process when the hinge structure has fewer parts. In addition, in order to reduce the processing steps and improve the overall strength of the structure, the connecting member 1 and the teeth 7 are an integrated structure.

[0046] In addition, a steam oven is provided, comprising a door body, a main box body and a control panel, and also comprising a control screen or control keys. The main box body is provided with a downward-flipping door hinge structure of the above-mentioned steam oven, and the second end of the connecting piece 1 in the downward-flipping door hinge structure extends out of the main box body and is detachably connected to the door body. The driver 16 of the downward-flipping door hinge structure is communicatively connected to the above-mentioned control panel, and the above-mentioned control screen or control keys are electrically connected to the control panel.

[0047] The steam oven of this embodiment has the beneficial effects of the above-mentioned downward-flipping door hinge structure, which allows the user to directly open or close the door body by controlling the control screen or control keys, and can achieve uniform opening and closing of the door body. The operation is simple, which improves the user experience.

[0048] In this specification, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0049] In the description of this specification, the description with reference to the terms "preferred embodiment", "further embodiment", "other embodiments" or "specific example" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0050] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A hinge structure for a downward-flipping door of a steam oven, characterized in that: It includes a connector, a housing and a driver; The housing is provided with a first rotating shaft and a second rotating shaft both rotatably connected thereto, the first rotating shaft sleeve is provided with a first gear, the second rotating shaft sleeve is provided with a second gear, the first gear is meshedly connected with the second gear, one end of the first rotating shaft is transmission-connected with the driver, and the driver is also used for communication connection with the control panel of the steam oven; The first end of the connecting member is hinged to the first end of the shell, and the first end of the connecting member is provided with teeth extending along a circular arc, the teeth are meshed and connected with the second gear, and the second end of the connecting member is used to connect to the door body of the steam oven.

2. The hinge structure for a downward-flipping door according to claim 1, characterized in that: The housing has a U-shaped cavity, and the first gear and the second gear are both located in the cavity.

3. The hinge structure for a downward-flipping door according to claim 2, characterized in that: A third rotating shaft is provided at the first end of the shell, the first end of the connecting member is located between the side walls of the shell, the third rotating shaft passes through the side walls of the shell and the connecting member, and the third rotating shaft is a hinge axis for hingedly connecting the first end of the connecting member to the shell.

4. The hinge structure for a downward-flipping door according to claim 3, characterized in that: The first end of the shell is provided with a first stop portion and a second stop portion, and the first end of the connecting member is correspondingly provided with a first abutment portion and a second abutment portion. When the connecting member rotates with the third rotating shaft as the center axis to drive the door body to close, the first abutment portion abuts against the first stop portion. After the connecting member rotates with the third rotating shaft as the center axis to drive the door body to open, the second abutment portion abuts against the second stop portion.

5. The hinge structure for a downward-flipping door according to claim 4, characterized in that: The movable angle range of the connecting member between the first stop portion and the second stop portion is 90°.

6. The hinge structure for a downward-flipping door according to claim 1, characterized in that: The first rotating shaft has a first convex key disposed on its circumferential surface along its axial direction, and the first gear inner ring has a first concave groove disposed thereon, and the first convex key is matched and connected with the first concave groove; And / or, a second convex key is provided on the circumferential surface of the second rotating shaft along its axial direction, a second convex key is provided on the inner ring of the second gear, and the second convex key is matched and connected with the second groove.

7. The hinge structure for a downward-flipping door according to claim 1, characterized in that: The hinge structure of the downward-flipping door further comprises a buffer device, and two ends of the buffer device are detachably connected to the first end of the connecting member and the second end of the shell, respectively.

8. The hinge structure for a downward-flipping door according to claim 7, characterized in that: The buffer device is a telescopic damper.

9. The hinge structure for a downward-flipping door according to claim 1, characterized in that: The first gear and the second gear are made of plastic; And / or, the outer diameters of the first gear and the teeth are equal; And / or, the connecting member and the teeth are an integrated structure.

10. A steam oven, comprising a door body, a main box body and a control panel, characterized in that: It also includes a control screen or control keys, the main box body is provided with a down-flip door hinge structure of a steam oven as described in any one of claims 1 to 9, and the second end of the connecting piece in the down-flip door hinge structure extends out of the main box body and is detachably connected to the door body, the driver of the down-flip door hinge structure is communicatively connected to the control panel, and the control screen or control keys are electrically connected to the control panel.

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