Door body opening and closing structure and kitchen ware

Abstract

The utility model provides a door opening and closing structure and kitchenware, and the door opening and closing structure is applied to the kitchenware and comprises a mounting part, a pre-tightening part and a hinge; the mounting part comprises a mounting shaft; the first end of the mounting shaft is fixedly arranged on a rack of the kitchen ware, and the second end of the mounting shaft is connected with the pre-tightening part; the hinge and the pre-tightening part are arranged on the mounting shaft in a sleeving manner, and the hinge is arranged between the first end of the mounting shaft and the pre-tightening part; the pre-tightening part comprises at least three belleville springs and a pre-tightening assembly; the at least three belleville springs are arranged between the hinge and the pre-tightening assembly in parallel; the pre-tightening assembly is tightly connected with at least three belleville springs; the at least three belleville springs are used for providing pre-tightening force for the hinge under the pre-tightening effect of the pre-tightening assembly. According to the embodiment of the invention, the pre-tightening effect can be provided for the at least three belleville springs through the pre-tightening assembly, the hinge arranged on the mounting shaft is clamped through the at least three belleville springs and the mounting part, and the hinge has the advantages of being small in size, compact in structure, easy to mount and maintain and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of kitchen equipment, in particular to a door opening and closing structure and kitchen. BACKGROUND

[0002] As common kitchen equipment on the market, ovens and microwave ovens often include door structures that can be opened and closed. People can perform cooking operations on dishes by opening or closing the door. Existing ovens or microwave ovens often use side-opening door or pull-down door opening methods.

[0003] Among them, a common door opening structure realizes the opening and closing function of the door body through a hinge. However, the existing hinge structure is often large in size and complex in structure, which has the disadvantages of affecting the overall appearance, inconvenient installation and maintenance, etc. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the above technical problems, the utility model discloses a door opening and closing structure and kitchen, which can solve the technical problems of the hinge structure being large in size and complex in structure, affecting the overall appearance, and being inconvenient to install and maintain.

[0005] In order to achieve the above purpose, in a first aspect, the present application provides a door opening and closing structure, which is applied to a kitchen and includes a mounting part, a pre-tightening part and a hinge;

[0006] The mounting part includes a mounting shaft; the first end of the mounting shaft is fixedly arranged on the rack of the kitchen, and the second end of the mounting shaft is connected with the pre-tightening part;

[0007] The hinge is used to connect with the door body of the kitchen; the hinge and the pre-tightening part are sleeved on the mounting shaft, and the hinge is arranged between the first end of the mounting shaft and the pre-tightening part;

[0008] The pre-tightening part includes at least three disc springs and a pre-tightening assembly; the at least three disc springs are arranged in parallel between the hinge and the pre-tightening assembly; the pre-tightening assembly is tightly connected with the at least three disc springs; the at least three disc springs are used to provide a pre-tightening force to the hinge under the pre-tightening action of the pre-tightening assembly.

[0009] In a possible embodiment, the mounting shaft includes coaxially arranged first and second shaft segments;

[0010] The hinge and the at least three disc springs are sleeved on the first shaft segment; and the pre-tightening assembly is sleeved on the second shaft segment.

[0011] In a possible embodiment, the mounting part further includes two first gaskets; the two first gaskets are sleeved on the first shaft segment, and the two first gaskets are respectively located on the left and right sides of the hinge.

[0012] In a possible embodiment, the first shaft section comprises at least one first limiting surface;

[0013] The mounting portion comprises a mounting seat provided with a mounting hole; the mounting shaft is located in the mounting hole, and an inner wall of the mounting hole comprises at least one second limiting surface corresponding to the at least one first limiting surface; each second limiting surface is in abutment with the first limiting surface corresponding to the second limiting surface.

[0014] In a possible embodiment, the inner wall of each of the two first gaskets comprises at least one third limiting surface corresponding to the at least one first limiting surface; each third limiting surface is in abutment with the first limiting surface corresponding to the third limiting surface.

[0015] In a possible embodiment, the shaft diameter of the first shaft section is greater than the shaft diameter of the second shaft section.

[0016] The connection between the first shaft section and the second shaft section is provided with a chamfer structure.

[0017] In a possible embodiment, the second shaft section is provided with a threaded structure.

[0018] The pre-tightening assembly comprises a pre-tightening nut and a second gasket; the second gasket is arranged between the at least three disc springs and the pre-tightening nut.

[0019] In a possible embodiment, the pre-tightening portion comprises three disc springs.

[0020] In a possible embodiment, the three disc springs comprise a first disc spring, a second disc spring and a third disc spring arranged in sequence.

[0021] The concave surface of the first disc spring is in contact connection with the concave surface of the second disc spring; the convex surface of the second disc spring is in contact connection with the convex surface of the third disc spring.

[0022] In a second aspect, the application discloses a kitchen appliance, which comprises a rack, a door body and at least one door body opening and closing structure as described above.

[0023] The door body opening and closing structure is fixedly arranged on the rack through the mounting portion; the door body opening and closing structure is connected with the door body through the hinge.

[0024] The technical scheme provided by the embodiments of the application has the following technical effects:

[0025] In the utility model, the door body opening and closing structure can be fixedly arranged on the rack through the mounting portion, and can be connected with the door body through the hinge. The door body opening and closing structure can provide pre-tightening action to the at least three disc springs through the pre-tightening assembly, and the hinge arranged on the mounting shaft is clamped through the at least three disc springs and the mounting portion, so that when the hinge is rotated to any angle, the mounting portion and the pre-tightening portion can lock the position of the hinge, and further fix the position of the door body connected with the hinge. The door body opening and closing structure provided by the utility model is small in size and simple in structure, has the advantages of being beautiful, easy to install and maintain and the like. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions and advantages of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0027] Figure 1 is a structure schematic diagram of a door body opening and closing structure provided by the embodiment of the present application Figure 1 ;

[0028] Figure 2 is a structure schematic diagram of a door body opening and closing structure provided by the embodiment of the present application Figure 2 ;

[0029] Figure 3 is a structure schematic diagram of a door body opening and closing structure provided by the embodiment of the present application Figure 3 ;

[0030] Figure 4 is a structure schematic diagram of a mounting seat of a door body opening and closing structure provided by the embodiment of the present application;

[0031] Figure 5 is a structure schematic diagram of a mounting seat of a door body opening and closing structure provided by the embodiment of the present application;

[0032] Figure 6 is a structure schematic diagram of a kitchen utensil provided by the embodiment of the present application;

[0033] In the drawings, the reference signs are explained as follows:

[0034] 1-mounting part; 11-mounting shaft; 111-first shaft segment; 112-second shaft segment; 113-first limiting surface; 114-chamfer structure; 115-thread structure; 12-first washer; 121-third limiting surface; 13-mounting seat; 131-second limiting surface; 2-pre-tightening part; 21-disc spring; 211-first disc spring; 212-second disc spring; 213-third disc spring; 22-pre-tightening assembly; 221-pre-tightening nut; 222-second washer; 3-hinge; 4-rack; 5-door body. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0036] It should be noted that the "one embodiment" or "embodiment" referred to in the specification of the embodiments of the present application means that the specific features, structures or characteristics can be included in at least one implementation of the present application. It should be understood that in the specification and claims of the embodiments of the present application and the above drawings, the terms "upper", "lower", "top", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included one or more features. Moreover, the terms "first", "second" and the like are used to distinguish similar objects, and do not necessarily describe a specific order or sequence.

[0037] As Figures 1 to 5 shown, the door opening and closing structure can be applied to kitchen utensils including but not limited to microwave ovens, ovens and the like, and the door opening and closing structure includes a mounting part 1, a pre-tightening part 2 and a hinge 3. For the convenience of display, Figure 4 the mounting shaft 111 of the door opening and closing structure in Figure 5 the door opening and closing structure in

[0038] In one possible embodiment, the mounting part 1 can include a mounting shaft 11. The first end of the mounting shaft 11 can be fixedly arranged on the rack 4 of the kitchen utensil, and the second end of the mounting shaft 11 can be connected with the pre-tightening part 2.

[0039] The hinge 3 can be used to connect with the door body of the kitchen appliance. The hinge 3 and the pre-tightening part 2 can be sleeved on the mounting shaft 11, and the hinge 3 is arranged between the first end of the mounting shaft 11 and the pre-tightening part 2. During the opening and closing of the door body, the hinge 3 can rotate relative to the mounting shaft 11, thereby driving the kitchen appliance door body to rotate.

[0040] Optionally, the pre-tightening part 2 can include at least three disc springs 21 and a pre-tightening assembly 22. The at least three disc springs 21 can be arranged in parallel between the hinge 3 and the pre-tightening assembly 22. Specifically, the parallel arrangement of the at least three disc springs 21 can mean that the at least three disc springs 21 are arranged in sequence on the mounting shaft 11, and the at least three disc springs 21 are arranged with the facing directions of each two adjacent disc springs 21 being opposite. Wherein, the facing directions of each two adjacent disc springs 21 being opposite means that the concave surfaces of each two adjacent disc springs 21 are in contact with each other, or the convex surfaces of each two adjacent disc springs 21 are in contact with each other.

[0041] The pre-tightening assembly 22 can be tightly connected with the at least three disc springs 21, and the pre-tightening assembly 22 can be used to provide a force to make the at least three disc springs 21 in a compressed state. The at least three disc springs 21 can be used to provide a pre-tightening force to the hinge 3 under the pre-tightening action of the pre-tightening assembly 22.

[0042] Therefore, the door body opening and closing structure can provide a pre-tightening action to the at least three disc springs 21 through the pre-tightening assembly 22, thereby providing a pre-tightening force to the hinge 3 to clamp the hinge 3. The hinge 3 structure provided by the present application is small in size, simple in structure, relatively beautiful, and convenient for operators to install and maintain.

[0043] In a possible embodiment, the mounting shaft 11 includes a first shaft segment 111 and a second shaft segment 112 arranged coaxially. The first shaft segment 111 can correspond to the first end of the mounting shaft 11, and the second shaft segment 112 can correspond to the second end of the mounting shaft 11. The hinge 3 and the at least three disc springs 21 can be sleeved on the first shaft segment 111, and the first shaft segment 111 can play a limiting support role for the hinge 3 and the at least three disc springs 21. The pre-tightening assembly 22 can be sleeved on the second shaft segment 112, and the second shaft segment 112 can play a limiting support role for the pre-tightening assembly 22.

[0044] In a possible embodiment, the mounting part 1 further includes two first washers 12. The two first washers 12 can be sleeved on the first shaft segment 111, and the two first washers 12 are respectively located on the left and right sides of the hinge 3. The two washers can separate the hinge 3 from the first end of the mounting shaft 11 and the at least three disc springs 21 to form a separate rotating space, thereby preventing the rotation of the hinge 3 from causing wear to the first end of the mounting shaft 11 or the at least three disc springs 21.

[0045] In a possible embodiment, the first shaft segment 111 comprises at least one first limiting surface 113. The first limiting surface 113 can be a plane on the first shaft segment 111.

[0046] The mounting portion 1 can comprise a mounting seat 13 provided with mounting holes. The mounting shaft 11 can be located in the mounting holes, the mounting portion 1 can fix the mounting shaft 11 on the rack 4 through the mounting seat 13, and the inner wall of the mounting hole comprises at least one second limiting surface 131 corresponding to the at least one first limiting surface 113. The shape of the second limiting surface 131 can correspond to the shape of the first limiting surface 113. When the first limiting surface 113 is a plane, the second limiting surface 131 can be a plane corresponding to the first limiting surface 113. Each second limiting surface 131 is fitted with the first limiting surface 113 corresponding to each second limiting surface 131.

[0047] Therefore, during the opening and closing of the door, the mounting seat 13 is always fixedly connected with the rack 4, at least the second limiting surface 131 of the mounting seat 13 is also always fixed, under the fitting of the first limiting surface 113 and the second limiting surface 131, the mounting shaft 11 is also always fixedly arranged on the mounting seat 13, and the mounting shaft 11 will not rotate following the rotation of the hinge 3.

[0048] In a possible embodiment, the inner wall of the two first gaskets 12 comprises at least one third limiting surface 121 corresponding to the at least one first limiting surface 113. The shape of the third limiting surface 121 can correspond to the shape of the first limiting surface 113. When the first limiting surface 113 is a plane, the third limiting surface 121 can be a plane corresponding to the first limiting surface 113. Each third limiting surface 121 is fitted with the first limiting surface 113 corresponding to each third limiting surface 121.

[0049] Therefore, during the opening and closing of the door, the mounting shaft 11 is always fixedly connected with the mounting seat 13, under the fitting of the first limiting surface 113 and the third limiting surface 121, the two first gaskets 12 will not rotate following the rotation of the hinge 3, thereby forming a separate rotation space of the hinge 3.

[0050] In a possible embodiment, the shaft diameter of the first shaft segment 111 is greater than the shaft diameter of the second shaft segment 112. The connection between the first shaft segment 111 and the second shaft segment 112 is provided with a chamfer structure 114.

[0051] Optionally, the connection between the first shaft segment 111 and the second shaft segment 112 is provided with a 45° chamfer structure 114. During the design process, the chamfer angle of the chamfer structure 114 can be adjusted according to the actual development needs.

[0052] In one possible embodiment, the second shaft segment 112 is provided with a threaded structure 115. The pre-tightening assembly 22 includes a pre-tightening nut 221 and a second washer 222, the pre-tightening nut 221 can be matched with the threaded structure 115 on the second shaft segment 112. The second washer 222 can be arranged between the at least three disc springs 21 and the pre-tightening nut 221, and the pre-tightening nut 221 provides a pre-tightening force to the at least three disc springs 21 through the second washer 222.

[0053] Optionally, the inner hole diameter of the second washer 222 can be close to the outer diameter of the second shaft segment 112. In the design and use of the door body opening and closing structure, people can also adjust the chamfering degree of the chamfer structure 114 to adjust the pre-tightening force. When the chamfering degree is reduced, the distance between the second washer 222 and the first shaft segment 111 is reduced, and the pre-tightening force that the at least three disc springs 21 can provide is greater. When the chamfering degree is increased, the distance between the second washer 222 and the first shaft segment 111 is increased, and the pre-tightening force that the at least three disc springs 21 can provide is smaller.

[0054] For example, if the angle is small, the inner hole diameter of the flat washer passes through the length of the inclined surface more, so that the spring washer has a greater elastic force. For example, if the angle is large, the length of the inclined surface of the inner hole diameter of the flat washer is less, so that the spring washer has a smaller elastic force.

[0055] In one possible embodiment, the pre-tightening part 2 includes three disc springs 21. The pre-tightening part 2 pre-tightens the three disc springs 21 through the pre-tightening assembly 22 to provide a pre-tightening force to the hinge 3. Optionally, when the hinge 3 needs a greater pre-tightening force, the number of disc springs 21 can be increased to increase the pre-tightening force that can be provided to the hinge 3.

[0056] In one possible embodiment, the three disc springs 21 include a first disc spring 211, a second disc spring 212 and a third disc spring 213 arranged in sequence.

[0057] Among them, the concave surface of the first disc spring 211 can be in contact with the concave surface of the second disc spring 212, and the convex surface of the second disc spring 212 is in contact with the convex surface of the third disc spring 213, so as to form a parallel arrangement of the first disc spring 211, the second disc spring 212 and the third disc spring 213.

[0058] Optionally, the convex surface of the first disc spring 211 can be in contact with the convex surface of the second disc spring 212, and the concave surface of the second disc spring 212 is in contact with the concave surface of the third disc spring 213, which can also form a parallel arrangement of the first disc spring 211, the second disc spring 212 and the third disc spring 213.

[0059] In a second aspect, the application discloses a kitchen appliance, which comprises a frame 4, a door body 5 and the door body opening and closing structure of any one of the above. The door body opening and closing structure can be fixed on the frame 4 through the mounting part 1, and the door body opening and closing structure can be connected with the door body through the hinge 3. Thus, under the fixation of the frame 4, the door body opening and closing structure can be fixed on the frame 4 through the mounting part 1, and the hinge 3 can be clamped by the positioning and pre-tightening of the mounting part 1 and the pre-tightening part 2, so that when the hinge 3 is rotated to any angle, the door body opening and closing structure can fix the hinge 3.

[0060] It should be noted that the above-mentioned sequence of the embodiments of the application is only for description, and does not represent the advantages and disadvantages of the embodiments. And the above describes the specific embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be executed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multi-task processing and parallel processing are possible or can be advantageous.

[0061] Each of the embodiments in the specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the difference from other embodiments. In particular, for the device embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the part of the method embodiments.

Claims

1. A door opening and closing structure, characterized by, The application is applied to kitchen utensils and comprises a mounting part, a pre-tightening part and a hinge. The mounting part comprises a mounting shaft, a first end of the mounting shaft is fixedly arranged on a frame of the kitchen utensil, and a second end of the mounting shaft is connected with the pre-tightening part. The hinge is used for being connected with a door body of the kitchen utensil, the hinge and the pre-tightening part are sleeved on the mounting shaft, and the hinge is arranged between the first end of the mounting shaft and the pre-tightening part. The pre-tightening part comprises at least three disc springs and a pre-tightening assembly, the at least three disc springs are arranged in parallel between the hinge and the pre-tightening assembly, the pre-tightening assembly is tightly connected with the at least three disc springs, and the at least three disc springs are used for providing pre-tightening force to the hinge under the pre-tightening action of the pre-tightening assembly.

2. The door opening and closing structure according to claim 1, wherein The mounting shaft comprises coaxially arranged first and second shaft segments. The hinge and the at least three disc springs are sleeved on the first shaft segment, and the pre-tightening assembly is sleeved on the second shaft segment.

3. The door opening and closing structure according to claim 2, wherein The mounting part further comprises two first gaskets, the two first gaskets are sleeved on the first shaft segment, and the two first gaskets are respectively located on left and right sides of the hinge.

4. The door opening and closing structure according to claim 3, characterized in that, The first shaft segment comprises at least one first limiting surface. The mounting part comprises a mounting seat provided with a mounting hole, the mounting shaft is located in the mounting hole, and an inner wall of the mounting hole comprises at least one second limiting surface corresponding to the at least one first limiting surface, and each second limiting surface is in abutment with the first limiting surface corresponding to the second limiting surface.

5. The door opening and closing structure according to claim 4, characterized in that, Inner walls of the two first gaskets each comprise at least one third limiting surface corresponding to the at least one first limiting surface, and each third limiting surface is in abutment with the first limiting surface corresponding to the third limiting surface.

6. The door opening and closing structure according to claim 2, wherein The shaft diameter of the first shaft segment is greater than the shaft diameter of the second shaft segment. A chamfer structure is arranged at a connection position of the first shaft segment and the second shaft segment.

7. The door opening and closing structure according to claim 6, wherein The second shaft segment is provided with a threaded structure. The pre-tightening assembly comprises a pre-tightening nut and a second gasket, and the second gasket is arranged between the at least three disc springs and the pre-tightening nut. 8.The door opening and closing structure according to claim 1, wherein The pre-tightening part comprises three disc springs.

9. The door opening and closing structure according to claim 8, wherein The three disc springs comprise a first disc spring, a second disc spring and a third disc spring arranged in sequence. A concave surface of the first disc spring is in contact connection with a concave surface of the second disc spring, and a convex surface of the second disc spring is in contact connection with a convex surface of the third disc spring.

10. A kitchen utensil, characterized in that The kitchen utensil comprises a frame, a door body and at least one door body opening and closing structure as claimed in any one of claims 1 to 9. The door body opening and closing structure is fixedly arranged on the frame through the mounting part, and the door body opening and closing structure is connected with the door body through the hinge.

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