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 and a shell, 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, and the first gear is meshed with the second gear; the first gear is in meshed connection with the second gear; 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, gear transmission is adopted in the opening and closing process of the door body of the steaming and baking oven, the transmission stability and reliability can be guaranteed, noise can be reduced, and even-speed opening or closing of the door body can be achieved under the condition that external force borne by the door body when the door body is opened and closed is certain; 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 not closing the door tightly, the hinge spring used is usually thicker and has a larger spring force. As a result, the hinge spring is prone to produce loud working noise during stretching and rebounding, and as the frequency of use increases, the spring force decreases and the service life of the hinge spring is shortened. If the spring is damaged, the hinge will get stuck and the door cannot be opened or closed, and the reliability is poor. In addition, the heavier the door, the longer the hinge spring will be, the internal parts will take up a larger space and be arranged tightly, with fewer gaps, making assembly and maintenance more difficult. Summary of the invention

[0004] In view of the above, an 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 oven, so as to solve the problems of the hinge spring having high working noise, poor reliability, and the internal parts occupying a large space and being arranged tightly, making assembly and maintenance difficult.

[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 and a shell;

[0007] The housing is provided with a first rotating shaft and a second rotating shaft both rotatably connected thereto, the first rotating shaft is sleeved with a first gear, the second rotating shaft is sleeved with a second gear, and the first gear is meshedly connected with the second gear;

[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 an elastic member, and two ends of the elastic member are detachably connected to the first end of the connecting member and the second end of the shell, respectively.

[0016] Further preferably, the elastic member is a spring, and two ends of the spring are respectively hooked to the first end of the connecting member and the second end of the shell.

[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 and a main box body, 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.

[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 teeth extending along a circular arc are provided on the connecting member, 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 realized by gear transmission during the opening and closing process of the steam oven door body, which can ensure the stability and reliability of the transmission, and can not only reduce the noise, but also realize the uniform opening or closing of the door body when the external force applied to the door body is constant when the door body is opened and closed;

[0023] The transmission structure of the hinge structure of the present invention is mainly composed of the connecting part, the first gear and the second gear. It has a simple structure, simple installation and compact layout, which greatly reduces the space occupied by the transmission structure and will not change significantly due to changes in the weight of the door body. Sufficient installation and maintenance space can be reserved, which greatly facilitates assembly and subsequent maintenance work. Therefore, it can solve the problems of high working noise and poor reliability of the hinge spring, and the large space occupied by internal parts and the close layout, which make assembly and maintenance difficult. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 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.

[0025] 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 ;

[0026] 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 ;

[0027] Figure 3 for Figure 1 Internal structure view;

[0028] Figure 4 for Figure 3 A node graph in;

[0029] Description of the drawings: connecting member 1, shell 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 convex key 13, first groove 14, spring 15. DETAILED DESCRIPTION

[0030] 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.

[0031] 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.

[0032] 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 and a housing 2;

[0033] 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, and the first gear 5 is meshedly connected with the second gear 6;

[0034] 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.

[0035] 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 through gear transmission during the opening and closing process of the steam oven door body, which can ensure the stability and reliability of the transmission, not only can reduce the noise, but also can realize the uniform opening or closing of the door body when the external force applied to the door body when it is opened and closed is constant;

[0036] The transmission structure of the hinge structure of this embodiment is mainly composed of a connecting part 1, a first gear 5 and a second gear 6. It has a simple structure, simple installation and compact layout, which greatly reduces the space occupied by the transmission structure and will not change significantly due to changes in the weight of the door body. Sufficient installation and maintenance space can be reserved, which greatly facilitates assembly and subsequent maintenance work. Therefore, it can solve the problems of high working noise and poor reliability of the hinge spring, and the large space occupied by internal parts and the close layout that make assembly and maintenance difficult.

[0037] 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 both be meshed and connected with the second gear 6 to ensure that the second gear 6 can rotate normally.

[0038] 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.

[0039] 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.

[0040] 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°.

[0041] 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.

[0042] In another preferred embodiment, Figure 2 As shown, the hinge structure of the downward-flipping door further includes an elastic member, the two ends of which are detachably connected to the first end of the connecting member 1 and the second end of the housing 2, respectively. In this embodiment, the elastic member can be stretched and deformed to generate a restoring tension when the connecting member 1 rotates with the door body being opened or closed. When the connecting member 1 is in a closed state, the restoring tension can provide a locking force to assist in closing the door body. When the connecting member 1 is in an open state, it can play a buffering role to prevent the user from being injured by the weight-bearing state during the door body opening process due to the accelerated fall of the door body. Preferably, the elastic member is a spring 15, the two ends of the spring 15 are respectively hooked and fixed to the first end of the connecting member 1 and the second end of the housing 2, which is convenient for disassembly and replacement. In the use state of the hinge structure of this embodiment, the spring 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 deformation of the spring 15 will not affect the normal operation of each gear.

[0043] 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.

[0044] In addition, a steam oven is provided, comprising a door body and a main box body, the main box body is provided with the above-mentioned downward-flip door hinge structure of the steam oven, and the second end of the connecting piece 1 in the downward-flip door hinge structure extends out of the main box body and is detachably connected to the door body.

[0045] The steam oven of this embodiment has the beneficial effects of the above-mentioned downward-flipping door hinge structure, which will not be described in detail here.

[0046] 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.

[0047] 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.

[0048] 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: including a connecting piece and a housing; The housing is provided with a first rotating shaft and a second rotating shaft both rotatably connected thereto, the first rotating shaft is sleeved with a first gear, the second rotating shaft is sleeved with a second gear, and the first gear is meshedly connected with the second gear; 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 downward-flipping door hinge structure further comprises an elastic member, and two ends of the elastic member 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 elastic member is a spring, and two ends of the spring are respectively hooked and fixed to the first end of the connecting member and the second end of the housing.

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 and a main box body, characterized in that: The main box body is provided with a downward-flipping door hinge structure of a steam oven as described in any one of claims 1 to 9, 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.

Images