Mounting structure for door hinge assembly and oven thereof
By combining hinge base, hinge connector and hinge limiter, the problem of loose connection between furnace door and furnace box is solved, and a stable connection between furnace door and furnace box is achieved, ensuring uniform heating and energy saving.
Patent Information
- Application Number
- CN202423043368.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-12-09
AI Technical Summary
In existing ovens, a loose connection between the oven door and the oven body causes uneven closing, resulting in heat and steam escaping from the door gaps, affecting uneven heating and wasting energy.
The system employs a combination structure of hinge base, hinge connector, and hinge limiter. The hinge limiter rotatably connects the two door hinge assemblies, enhancing the hinge connection strength and achieving a stable and balanced connection between the furnace door and the furnace box.
To prevent the oven door from becoming loose, ensure a secure connection between the oven door and the oven body, prevent heat and steam leakage, improve the uniformity of oven heating, and reduce energy waste.
Smart Images
Figure CN223724388U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to cooking device technical field especially, relates to a mounting structure for door hinge assembly and oven thereof. BACKGROUND
[0002] The steaming oven on the market, electric oven product mostly is up and down switch door structure, usually, the oven includes furnace door body, oven body and door hinge assembly, the oven body includes front plate, cavity assembly, back plate, shell assembly and base assembly, the shell assembly covers in the cavity assembly outside, the bottom of shell assembly connects base assembly, the cavity assembly, shell assembly and base assembly enclose and form accessory installation cavity, and the front plate and back plate cover respectively in the front and rear two ends of accessory installation cavity. Door hinge assembly is arranged between the oven body and furnace door body, is used for controlling the opening and closing of furnace door body. This structure usually installs a pair of symmetrical door hinge assembly in the left and right sides below furnace door body, and the split type hinge seat is installed on the one side of front plate in accessory installation cavity respectively.
[0003] But the oven in the process of opening and closing, due to the tension of door hinge assembly and the weight of furnace door body constantly impact and pull the split type hinge seat and the front plate of oven body, cause furnace door body loose, cause door imbalance, make the cavity inside heat and steam of oven body overflow from the door gap, affect uneven heating, waste energy consumption. SUMMARY
[0004] Therefore, the utility model provides a mounting structure for door hinge assembly and oven thereof for solving the problem of door imbalance caused by the loose connection between furnace door body and oven body in the prior art.
[0005] To achieve one or part or all of the above purposes or other purposes, the utility model provides a mounting structure for door hinge assembly, the mounting structure for door hinge assembly includes hinge seat, hinge connecting piece, two hinge limit pieces, two hinge limit pieces are fixedly connected on the two sides of hinge seat respectively, the hinge seat is used for fixedly connecting the front plate of oven body, the first end of hinge connecting piece is used for rotatingly connecting door hinge assembly, and the second end of hinge connecting piece is used for penetrating the front plate of oven body to be fixedly connected to hinge limit piece.
[0006] Further, the hinge seat includes first seat body, second seat body and third seat body, two ends of second seat body are connected to first seat body and third seat body respectively, first seat body and third seat body are used for fixedly connecting the two sides of front plate respectively, and second seat body is used for fixedly connecting the bottom side of front plate, two hinge limit pieces are fixedly connected to first seat body and third seat body respectively.
[0007] Further, the hinge limiting piece is provided with a limiting groove, a second end of the hinge connecting piece is clamped and connected to the limiting groove, a groove bottom of the limiting groove is provided with a first limiting hole, the second end of the hinge connecting piece is provided with a second limiting hole, the first limiting hole and the second limiting hole are arranged in communication to be penetrated by a screw.
[0008] Further, the first seat body, the second seat body or / and the third seat body are provided with a first fixing hole, the first fixing hole is used for penetrating a screw to be fixedly connected to a front plate.
[0009] Further, the first seat body and the third seat body are provided with an extension support on the side, the extension support is provided with a second fixing hole, the second fixing hole is used for penetrating a screw to be fixedly connected to a front plate.
[0010] Further, the mounting structure for the door hinge assembly further comprises a seat body support rod, a side wall at a first end of the seat body support rod is provided with a third fixing hole, an end wall at a second end of the seat body support rod is provided with a fourth fixing hole, the third fixing hole and the second fixing hole are arranged in communication to be penetrated by a screw, and the fourth fixing hole is used for penetrating a screw to be fixedly connected to a rear plate of the furnace box body.
[0011] Further, a first end of the hinge connecting piece is provided with a rotating shaft hole and an elastic fixing hole, the rotating shaft hole is used for rotatingly connecting a hinge frame of the door hinge assembly, and the elastic fixing hole is used for fixedly connecting a hinge elastic piece of the door hinge assembly.
[0012] Further, a middle part of the hinge connecting piece is provided with a first clamping groove, the first clamping groove is arranged between the first end of the hinge connecting piece and a second end of the hinge connecting piece, and the first clamping groove is used for slidingly clamping the hinge elastic piece in a folding state of the door hinge assembly.
[0013] A second object of the utility model provides an oven, the oven comprises the mounting structure for the door hinge assembly; the oven further comprises a furnace door body and two door hinge assemblies, the door hinge assembly is arranged in the furnace door body, and each hinge connecting piece is in one-to-one correspondence with each door hinge assembly and is rotationally connected.
[0014] Further, the door hinge assembly comprises a hinge frame and a hinge elastic piece, a first end of the hinge frame is used for fixedly connecting the furnace door body, a second end of the hinge frame is rotationally connected to the first end of the hinge connecting piece, one end of the hinge elastic piece is fixedly connected to the first end of the hinge frame, and the other end of the hinge elastic piece is fixedly connected to the first end of the hinge connecting piece.
[0015] The utility model discloses an embodiment, and the following beneficial effects will be obtained:
[0016] The utility model discloses a mounting structure for door hinge assembly and oven thereof, mounting structure for door hinge assembly is through the both sides of hinged seat respectively through the hinge limiting piece rotation connection two door hinge assemblies, thereby realizes the stable, balanced connection of furnace door body and furnace box body, in combination with hinge limiting piece, strengthens the connection strength of hinge connecting piece and hinged seat, further avoids the phenomenon that furnace door body loosens, further realizes the stable, balanced connection of furnace door body and furnace box body. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, below will to the drawing needed to use in the embodiment or prior art description simple introduction, obviously, below description's drawing only some embodiments of the utility model, for the ordinary skilled person in the art comes, under the premise of not paying creative labor, can also obtain other drawings according to these drawings.
[0018] Among them:
[0019] Figure 1 It is the structure schematic drawing of mounting structure for door hinge assembly in an embodiment of the utility model;
[0020] Figure 2 It is the structure schematic drawing of hinged seat of mounting structure for door hinge assembly in an embodiment of the utility model;
[0021] Figure 3 It is the exploded structure schematic drawing of door hinge assembly in an embodiment of the utility model under the unfolded state;
[0022] Figure 4 It is the sectional view of door hinge assembly in an embodiment of the utility model under the retracted state;
[0023] Figure 5 It is the sectional view of door hinge assembly in an embodiment of the utility model under the unfolded state;
[0024] Figure 6 It is the first kind of exploded structure schematic drawing of oven in an embodiment of the utility model;
[0025] Figure 7 It is the second kind of exploded structure schematic drawing of oven in an embodiment of the utility model;
[0026] Figure 8 It is the local structure schematic drawing of oven in an embodiment of the utility model.
[0027] Reference signs:
[0028] 100. Furnace door body; 200. Furnace box body; 210. Front plate; 220. Cavity assembly; 230. Rear plate; 300. Door hinge assembly; 310. Hinge frame; 311. Elastic element storage slot; 312. Frame fixing hole; 313. Frame connecting block; 320. Hinge elastic element; 400. Mounting structure for door hinge assembly; 410. Hinge seat; 411. First seat body; 412. Second seat body; 413. Third seat body; 414. First fixing hole; 415. Extension support; 4151. Second fixing hole; 416. Reinforcing edge; 420. Hinge connector; 421. Second limiting hole; 422. Rotating shaft hole; 423. Elastic fixing hole; 424. First slot; 430. Hinge limiting component; 431. Limiting groove; 432. First limiting hole; 433. Reinforcing rib; 440. Base support rod; 441. Third fixing hole; 442. Fourth fixing hole. Detailed Implementation
[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or accompanying drawings of this invention are used to distinguish different objects, not to describe a particular order; the cold water mentioned in the specification and claims of this invention includes room temperature water.
[0030] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0031] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
[0032] Reference Figures 1 to 2The first embodiment of the present application provides a mounting structure 400 for a door hinge assembly, which comprises a hinge seat 410, a hinge connecting piece 420, and two hinge limiting pieces 430; the two hinge limiting pieces 430 are respectively fixedly connected to the two side edges of the hinge seat 410, and the hinge seat 410 is used for fixedly connecting a front plate 210 of a furnace box body 200; the first end of the hinge connecting piece 420 is used for rotationally connecting a door hinge assembly 300, and the second end of the hinge connecting piece 420 is used for penetrating through the front plate 210 of the furnace box body 200 to be fixedly connected to the hinge limiting piece 430.
[0033] Further, the hinge limiting piece 430 is integrally formed on the side edge of the hinge seat 410, and a reinforcing rib 433 is arranged at the intersection, so as to enhance the connection strength of the hinge limiting piece 430 and the hinge seat 410. The plate edge of the hinge seat 410 is bent to form a reinforcing edge 416, so as to enhance the structural strength of the hinge seat 410.
[0034] Specifically, the hinge seat 410 is mounted and fixed on the inner wall of the front plate 210 of the furnace box body 200, so that the hinge seat 410 is hiddenly mounted in a fitting mounting cavity of the furnace box body 200. The first end of the hinge connecting piece 420 penetrates into a furnace door body 100 and is rotationally connected with a door hinge assembly 300 arranged in the furnace door body 100. The door hinge assembly 300 is rotationally arranged with the first end of the hinge connecting piece 420 as a rotation point. The second end of the hinge connecting piece 420 penetrates through the front plate 210 of the furnace box body 200 and is fixedly connected with the hinge limiting piece 430 in the fitting mounting cavity. Moreover, the two hinge limiting pieces 430 on the two side edges of the hinge seat 410 are respectively fixedly connected with one hinge connecting piece 420, that is, the two door hinge assemblies 300 on the left and right sides below the furnace door body 100 are respectively fixedly connected with one hinge connecting piece 420 on the two side edges of the hinge seat 410.
[0035] In the embodiment, the mounting structure 400 for the door hinge assembly rotationally connects two door hinge assemblies 300 through the two side edges of the hinge seat 410 respectively through the two hinge limiting pieces 430, so as to realize the stable and balanced connection between the furnace door body 100 and the furnace box body 200. In combination with the hinge limiting piece 430, the connection strength of the hinge connecting piece 420 and the hinge seat 410 is enhanced, so as to further avoid the loosening of the furnace door body 100 and further realize the stable and balanced connection between the furnace door body 100 and the furnace box body 200.
[0036] In summary, through the mounting structure 400 for the door hinge assembly, during the opening and closing of the oven, the impact and pulling of the door hinge assembly 300 and the weight of the oven door body 100 on the split hinge seat 410 and the front plate 210 of the oven cavity body 200 are avoided, the overall structure is more balanced, the oven door body 100 is more stable during opening and closing, and the door is not easy to shake or the door hinge assembly 300 on one side is deformed to cause the door to be not tightly closed, the overall use experience of the oven is effectively improved, such as avoiding the overflow of heat and steam from the door gap, ensuring uniform heating of the oven, and avoiding energy waste.
[0037] With reference to Figures 1 to 2 The hinge seat 410 includes a first seat body 411, a second seat body 412, and a third seat body 413. The two ends of the second seat body 412 are respectively connected to the first seat body 411 and the third seat body 413. The first seat body 411 and the third seat body 413 are respectively used for fixedly connecting the two sides of the front plate 210. The second seat body 412 is used for fixedly connecting the bottom side of the front plate 210. Two hinge limiting members 430 are respectively fixedly connected to the first seat body 411 and the third seat body 413.
[0038] Specifically, the first seat body 411 is located outside one side of the cavity assembly 220, the second seat body 412 is located outside the bottom of the cavity assembly 220, and the third seat body 413 is located outside the other side of the cavity assembly 220. The first seat body 411, the second seat body 412, and the third seat body 413 are all located in the accessory mounting cavity.
[0039] In this embodiment, the first seat body 411 and the third seat body 413 are integrated together through the second seat body 412. When the door hinge assembly 300 and the weight of the oven door body 100 continuously impact and pull the first seat body 411 and the front plate 210, the impact and pulling force is gradually dispersed to the third seat body 413 through the second seat body 412, so that the first seat body 411 and the third seat body 413 are balanced in stress. When the door hinge assembly 300 and the weight of the oven door body 100 continuously impact and pull the third seat body 413 and the front plate 210, the impact and pulling force is gradually dispersed to the first seat body 411 through the second seat body 412, so that the first seat body 411 and the third seat body 413 are balanced in stress.
[0040] With reference to Figures 1 to 2 The hinge limiting member 430 is provided with a limiting groove 431. The second end of the hinge connecting member 420 is clamped and connected to the limiting groove 431. The groove bottom of the limiting groove 431 is provided with a first limiting hole 432. The second end of the hinge connecting member 420 is provided with a second limiting hole 421. The first limiting hole 432 and the second limiting hole 421 are arranged in communication to be penetrated by a screw.
[0041] Specifically, the first limiting hole 432 is provided with at least two, and the second limiting hole 421 is provided in one-to-one correspondence with the first limiting hole 432.
[0042] In the embodiment, the limiting groove 431 is used to enhance the connection strength of the second end of the hinge connecting piece 420 and the hinge limiting piece 430, and the screw is inserted into the first limiting hole 432 and the second limiting hole 421 arranged in one-to-one correspondence, so as to further enhance the connection strength of the second end of the hinge connecting piece 420 and the hinge limiting piece 430.
[0043] Referring to Figures 1 to 2 , the first seat body 411, the second seat body 412 or / and the third seat body 413 are provided with the first fixing hole 414, and the first fixing hole 414 is used for inserting a screw to be fixedly connected to the front plate 210.
[0044] In the embodiment, the front plate 210 is provided with a screw hole in correspondence, so as to cooperate with the first fixing hole 414 to realize the fixed connection of the hinge seat 410 and the front plate 210 of the furnace body 200.
[0045] Referring to Figures 1 to 2 , the side edges of the first seat body 411 and the third seat body 413 are provided with the extending support 415, and the extending support 415 is provided with the second fixing hole 4151, which is used for inserting a screw to be fixedly connected to the front plate 210.
[0046] Specifically, the plate surface of the extending support 415 is perpendicular to the plate surface of the first seat body 411.
[0047] In the embodiment, the second fixing hole 4151 on the extending support 415 is used to further enhance the fixed connection effect of the hinge seat 410 and the front plate 210 of the furnace body 200. In cooperation with the first fixing hole 414, the fixed connection of the hinge seat 410 and the front plate 210 of the furnace body 200 is realized in two intersecting directions, and the fixed connection effect of the hinge seat 410 and the front plate 210 of the furnace body 200 is further enhanced.
[0048] Referring to Figures 1 to 2 , the mounting structure 400 for the door hinge assembly further comprises a seat body support rod 440, the side wall at the first end of the seat body support rod 440 is provided with a third fixing hole 441, and the end wall at the second end thereof is provided with a fourth fixing hole 442; the third fixing hole 441 is arranged in communication with the second fixing hole 4151 to be inserted into a screw together, and is used for fixedly connecting the front plate 210 of the furnace body 200, and the fourth fixing hole 442 is used for inserting a screw to be fixedly connected to the rear plate 230 of the furnace body 200.
[0049] Specifically, the second end of the seat body support rod 440 is bent to form a bent plate, the plate surface of the bent plate intersects with the plate surface of the seat body support rod 440, and the fourth fixing hole 442 is arranged on the bent plate.
[0050] In the embodiment, the fixed connection of the extension support 415 and the front plate 210 and the fixed connection of the extension support 415 and the rear plate 230 are realized by the seat support rod 440, so as to increase the support force of the fixed hinge seat 410.
[0051] With reference to Figures 1 to 2 The first end of the hinge connecting piece 420 is provided with a rotating shaft hole 422 and an elastic fixing hole 423. The rotating shaft hole 422 is used for rotatingly connecting the hinge frame 310 of the door hinge assembly 300. The elastic fixing hole 423 is used for fixedly connecting the hinge elastic piece 320 of the door hinge assembly 300.
[0052] Specifically, the hinge frame 310 is provided with an elastic piece storage groove 311. The groove bottom of the elastic piece storage groove 311 is provided with a frame fixing hole 312. The outer side wall of the hinge frame 310 is extended to form a frame connecting block 313. The frame connecting block 313 is also provided with a frame fixing hole 312. A screw is passed through the frame fixing hole 312 and penetrates the shell of the furnace door body 100, so as to fix the hinge frame 310 on the inner wall of the shell of the furnace door body 100. The hinge elastic piece 320 is arranged in the elastic piece storage groove 311, and the two ends of the hinge elastic piece 320 are respectively located at the top end of the hinge frame 310 and the bottom end of the hinge frame 310.
[0053] In the embodiment, during the opening and closing of the furnace door body 100, the rotating shaft hole 422 is used as the rotating point of the hinge frame 310, and the elastic fixing hole 423 is used as the stretching fixing point of the hinge elastic piece 320. After the furnace door body 100 is opened, one end of the hinge elastic piece 320 moves with the movement of the top end of the hinge frame 310, and the other end of the hinge elastic piece 320 is still fixed in the elastic fixing hole 423, so that the hinge elastic piece 320 is in a stretching state.
[0054] With reference to Figures 1 to 2 The middle part of the hinge connecting piece 420 is provided with a first clamping groove 424. The first clamping groove 424 is arranged between the first end of the hinge connecting piece 420 and the second end of the hinge connecting piece 420. The first clamping groove 424 is used for slidingly clamping the hinge elastic piece 320 in the folded state of the door hinge assembly 300.
[0055] Specifically, the door hinge assembly 300 is in the folded state, that is, the furnace door body 100 and the front plate 210 of the furnace box body 200 are in the folded state.
[0056] In the embodiment, when the door hinge assembly 300 is in the folded state, the bottom end of the hinge elastic piece 320 is clamped by the first clamping groove 424. When the door hinge assembly 300 is gradually unfolded, the bottom end of the hinge elastic piece 320 gradually slides out of the first clamping groove 424.
[0057] With reference to Figures 6 to 8The utility model discloses a second embodiment proposes a kind of oven, the oven includes the mounting structure 400 for door hinge assembly above-mentioned, the oven further include oven door body 100 and two door hinge assemblies 300, the door hinge assembly 300 is located in the oven door body 100, each the hinge connecting piece 420 is one-to-one corresponding rotation connection each door hinge assembly 300.
[0058] In the embodiment, by the mounting structure 400 for door hinge assembly, the installation stability of door hinge assembly 300 and furnace box body 200 is enhanced, avoid appearing to shake, or the deformation of one side door hinge assembly 300 leads to the situation that door is not closed tightly.
[0059] Refer to Figures 3 to 5 The door hinge assembly 300 includes hinge frame 310, hinge elastic piece 320 and;The first end of hinge frame 310 is used for fixedly connected oven door body 100, the second end of hinge frame 310 is rotationally connected to the first end of hinge connecting piece 420, one end of hinge elastic piece 320 is fixedly connected to the first end of hinge frame 310, the other end of hinge elastic piece 320 is fixedly connected to the first end of hinge connecting piece 420.
[0060] In the embodiment, by the mounting structure 400 for door hinge assembly, the installation stability of door hinge assembly 300 and furnace box body 200 is enhanced, avoid appearing to shake, or the deformation of one side door hinge assembly 300 leads to the situation that door is not closed tightly.
[0061] Obviously, the above-described embodiments are only a part of the embodiments of the utility model, and not all the embodiments, and the drawings give the preferred embodiments of the utility model, but do not limit the patent range of the utility model. The utility model can be realized in many different forms, and conversely, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing specific embodiments can be modified, or some technical features can be replaced equivalently. Any equivalent structure made by using the contents of the utility model specification and drawings, directly or indirectly used in other related technical fields, is also within the patent protection range of the utility model.
Claims
1. A mounting structure for a door hinge assembly, characterized by, The hinge seat, the hinge connecting piece, and two hinge limiters; The two hinge limiters are fixedly connected to the two side edges of the hinge seat, and the hinge seat is used for fixedly connecting the front plate of the furnace box body.
2. The mounting structure for a door hinge assembly according to claim 1, characterized by The hinge seat comprises a first seat body, a second seat body, and a third seat body; the two ends of the second seat body are connected to the first seat body and the third seat body respectively, the first seat body and the third seat body are used for fixedly connecting the two sides of the front plate respectively, and the second seat body is used for fixedly connecting the bottom side of the front plate; the two hinge limiters are fixedly connected to the first seat body and the third seat body respectively.
3. The mounting structure for a door hinge assembly according to claim 2, characterized by The hinge limiter is provided with a limiting groove, the second end of the hinge connecting piece is clamped and connected to the limiting groove, the groove bottom of the limiting groove is provided with a first limiting hole, the second end of the hinge connecting piece is provided with a second limiting hole, and the first limiting hole and the second limiting hole are arranged in communication to be penetrated by a screw.
4. The mounting structure for a door hinge assembly according to claim 3, characterized by The first seat body, the second seat body, or / and the third seat body are provided with a first fixing hole, and the first fixing hole is used for penetrating a screw to be fixedly connected to the front plate.
5. The mounting structure for a door hinge assembly according to claim 4, characterized by The side edges of the first seat body and the third seat body are provided with an extension support; the extension support is provided with a second fixing hole, and the second fixing hole is used for penetrating a screw to be fixedly connected to the front plate.
6. The mounting structure for a door hinge assembly according to claim 5, wherein The mounting structure for the door hinge assembly further comprises a seat body support rod, the side wall at the first end of the seat body support rod is provided with a third fixing hole, and the end wall at the second end of the seat body support rod is provided with a fourth fixing hole; the third fixing hole and the second fixing hole are arranged in communication to be penetrated by a screw, and are used for fixedly connecting the front plate of the furnace box body; and the fourth fixing hole is used for penetrating a screw to be fixedly connected to the rear plate of the furnace box body.
7. The mounting structure for a door hinge assembly according to claim 3, wherein The first end of the hinge connecting piece is provided with a rotating shaft hole and an elastic fixing hole; the rotating shaft hole is used for rotatingly connecting the hinge frame of the door hinge assembly; and the elastic fixing hole is used for fixedly connecting the hinge elastic piece of the door hinge assembly.
8. The mounting structure for a door hinge assembly according to claim 7, characterized by The middle part of the hinge connecting piece is provided with a first clamping groove, and the first clamping groove is arranged between the first end of the hinge connecting piece and the second end of the hinge connecting piece; the first clamping groove is used for slidingly clamping the hinge elastic piece in the folded state of the door hinge assembly.
9. An oven, characterized in that The mounting structure for the door hinge assembly comprises the mounting structure for the door hinge assembly according to any one of claims 1-8; the oven further comprises an oven door body and two door hinge assemblies, the door hinge assemblies are arranged in the oven door body, and each hinge connecting piece is correspondingly connected to each door hinge assembly.
10. The oven of claim 9, wherein, The door hinge assembly comprises a hinge frame and a hinge elastic piece; the first end of the hinge frame is used for fixedly connecting the oven door body; the second end of the hinge frame is rotatably connected to the first end of the hinge connecting piece; one end of the hinge elastic piece is fixedly connected to the first end of the hinge frame; and the other end of the hinge elastic piece is fixedly connected to the first end of the hinge connecting piece.