Double-door linkage mechanism and oven

Abstract

The double-door linkage mechanism is applied to a left door body and a right door body of the double-door oven, one side edge of the left door body and one side edge of the right door body are hinged to the two opposite sides of an opening of the double-door oven respectively, and the double-door linkage mechanism comprises a left linkage rod, a right linkage rod, a linkage support and a roller assembly; a sliding groove is formed in the middle of the linkage support, and the roller assembly is arranged in the sliding groove in a sliding mode. One end of the left link rod and one end of the right link rod are both hinged to the roller assembly, the other end of the left link rod is hinged to the left door body, and the other end of the right link rod is hinged to the right door body. According to the double-door linkage mechanism and the oven, the doors can be opened and closed on the two sides in a synchronous linkage mode, and the double-door linkage mechanism is simple in structure and convenient to operate.

Description

Technical Field

[0001] The utility model relates to the field of kitchen appliances, and more particularly to a double-door linkage mechanism and an oven. Background Art

[0002] An oven is a sealed appliance used for baking or drying food. Traditional ovens typically feature a single, manual, pull-down door. This requires the user to manually pull down the door handle to open the door. This causes heat to escape upward, posing a risk of burns to the user's face. Furthermore, the large pull-down door requires a large movement when opening and closing, taking up considerable operating space.

[0003] To address this issue, Chinese Patent No. CN219661487U discloses a double-door oven upper linkage mechanism and an oven. The oven includes a double-door upper linkage mechanism, which comprises a rotating rod assembly rotatably mounted above the oven body. The rotating rod assembly includes a left rotating rod and a right rotating rod symmetrically positioned at opposite ends of the oven body. A linkage rod assembly is connected between the adjacent ends of the left and right rotating rods. A left drive rod is hingedly connected between the other end of the left rotating rod and the left oven door, while a right drive rod is hingedly connected between the other end of the right rotating rod and the right oven door. In this prior art, the left and right oven doors are rotatably connected via connecting rods. When either door is opened or closed, the connecting rods move and / or rotate synchronously, driving the other door to open or close simultaneously. However, this linkage mechanism requires multiple connecting rods, resulting in a complex structure and inconvenience. Furthermore, currently available double-door ovens often close too quickly, easily pinching the user's hand and providing poor safety. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the utility model provides a double-door linkage mechanism and an oven, which can realize synchronous linkage and opening and closing of the double-sided doors, and has a simple structure and is easy to operate.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a double-door linkage mechanism, applied to the left door body and the right door body of the double-door oven, one side of the left door body and the right door body are respectively hinged to the opposite sides of the opening of the double-door oven, including a left connecting rod, a right connecting rod, a linkage bracket and a roller assembly; the middle part of the linkage bracket is provided with a slide groove, and the roller assembly is slidably arranged in the slide groove; one end of the left connecting rod and one end of the right connecting rod are both hinged to the roller assembly, the other end of the left connecting rod is hinged to the left door body, and the other end of the right connecting rod is hinged to the right door body.

[0006] In this technical solution, when the user manually pushes or pulls the left door or the right door, the left connecting rod or the right connecting rod will drive the roller assembly to move back and forth in the sliding groove of the linkage bracket, realizing the effect of double-door linkage switch, with simple structure and convenient operation.

[0007] In a preferred embodiment, the double-door linkage mechanism further includes a tension spring, one end of which is fixedly connected to the left or right side of the upper cavity of the double-door oven, and the other end is connected to the left or right connecting rod. This technology utilizes the tension spring to pull the left or right door inward, causing it to automatically rebound under the tension of the tension spring, achieving synchronized closing.

[0008] In a preferred technical solution, a compression spring and a limit assembly are also provided on the linkage bracket, and the limit assembly includes a limit plate; one end of the compression spring is connected to the rear part of the linkage bracket, and the other end is connected to the rear end of the limit plate, and the front end of the limit plate is rotatably connected to the front part of the linkage bracket, and the limit plate is provided with a semicircular recess near the front end of the slide; in the process of the roller assembly moving toward the front end of the slide, the side of the limit plate is stuck in the groove on the wheel surface of the roller assembly; when the roller assembly moves to the front end of the slide, the limit plate moves toward the direction of the roller assembly under the tension of the compression spring, so that the semicircular recess clamps the roller assembly, so that the left door body and the right door body are in a door opening pause state when the left door body and the right door body are at the maximum door opening angle.

[0009] The double-door linkage mechanism in this technology can stop the left and right door bodies by clamping the roller assembly through the semicircular recess on the limit plate when the roller assembly is at the front end of the slide slot, that is, when the left and right door bodies are at the maximum door opening angle.

[0010] In a preferred embodiment, the stopper assembly further includes a buffer pad, which is located on the upper surface of the rear portion of the stopper plate and contacts the roller assembly as the roller assembly passes by, thereby buffering the left and right door bodies from closing. This technology, by providing the buffer pad on the stopper plate, can both slow down the door closing speed and reduce closing noise.

[0011] In a preferred technical solution, the limiting plate includes a front bending portion, an intermediate limiting portion, and a rear bending portion. The front bending portion bends toward the direction of the chute and is rotatably connected to the front portion of the linkage bracket. The rear bending portion bends away from the roller assembly and is connected to the compression spring. The intermediate limiting portion is provided with a semicircular recess. The limiting plate in this technology adopts a front-to-back bending structure to facilitate limiting the roller assembly. When the roller assembly reaches the front end position of the chute, the semicircular recess clamps the roller assembly, thereby stopping the left and right door bodies.

[0012] In a preferred technical solution, the maximum opening angle range of the left door and the right door is 110° to 120°, which is convenient for users to take food into and out of the oven; when the left door and the right door are in the closing buffer state, the opening angle range of the left door and the right door is 10° to 20°, which effectively avoids pinching hands.

[0013] In a preferred technical solution, the roller assembly includes a roller shaft, a retaining spring, a roller, and a fastening plate. The retaining spring, roller, and fastening plate are sequentially mounted on the roller shaft from top to bottom. The roller surface has a first annular groove and a second annular groove that are parallel to each other. The side edges of the retaining plate engage in the first annular groove, while the sides of the chute engage in the second annular groove. In this technology, the roller is retained by the retaining plate via the first annular groove on the wheel surface and slidably positioned within the chute via the second annular groove, resulting in a more stable installation structure.

[0014] In a preferred technical solution, both the left and right door bodies include a door hinge, a door clamp, a door panel, and a door handle. The door clamps are rotatably hingedly mounted on opposite sides of the double-door oven opening via the door hinges. The left connecting rod is hingedly connected to the door clamp of the left door body, and the right connecting rod is hingedly connected to the door clamp of the right door body. One end of the door panel is fixedly mounted to the door clamp, and the other end is provided with a door handle. In this technology, both the left and right door bodies utilize a door body structure consisting of a door hinge, door clamp, door panel, and door handle, resulting in a simple structure and easy installation and maintenance.

[0015] In a preferred technical solution, the door panel is made of glass, which facilitates observation of the oven cavity.

[0016] An oven comprises a double-door linkage mechanism as described in any of the above technical solutions.

[0017] The oven in this technology can realize the opening and closing linkage of the doors on both sides through the above-mentioned double-door linkage mechanism, so that the doors on both sides can be opened and closed synchronously, which is more convenient to operate; and the left and right double-door structure is adopted, which reduces the space occupied by the operation compared with a single-door oven.

[0018] As can be seen from the above technical solution, compared with the existing technology, the beneficial effects of the present invention are as follows: the double-door linkage mechanism provided by the present invention can achieve the effect of double-door linkage opening and closing, with a simple structure and convenient operation; furthermore, by providing a limit assembly, the door body can be placed in a door opening pause state when at the maximum door opening angle, preventing it from returning to close, and can be closed slowly when closing, avoiding pinching of hands and reducing door closing noise. An oven using the above double-door linkage mechanism can achieve linkage opening and closing of the two doors, allowing the two doors to open and close synchronously, making operation more convenient.

[0019] In addition, other advantages of the present invention will be given in the following description, and some will become apparent from the following description or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0021] Figure 1 This is a structural diagram of the double-door linkage mechanism of the present invention in a door-opening pause state;

[0022] Figure 2 This is a structural diagram of the limit assembly of the present invention in a door opening pause state;

[0023] Figure 3 This is a structural diagram of the double-door linkage mechanism of the present invention in a door closing buffer state;

[0024] Figure 4 This is a structural diagram of the limit assembly of the present invention when it is in the door closing buffer state;

[0025] Figure 5 This is a structural diagram of the double-door linkage mechanism of the utility model in a closed state;

[0026] Figure 6 This is an exploded view of the left door body and left connecting rod of the utility model;

[0027] Figure 7 This is a side view of the oven of the present invention;

[0028] Figure 8 is a cross-sectional view of the roller assembly of the present utility model;

[0029] Figure 9 This is the overall structural diagram of the oven of the present utility model;

[0030] Explanation of the accompanying drawings: 1. Left door body; 2. Right door body; 3. Cavity; 4. Roller assembly; 5. Limit assembly; 6. Body shell; 7. Control panel; 11. Left connecting rod; 12. Right connecting rod; 13. Linkage bracket; 14. Tension spring; 15. Compression spring; 41. Roller shaft; 21. Door shaft; 22. Door clamp; 23. Door panel; 24. Door handle; 42. Retaining spring; 43. Roller; 44. Fastening plate; 51. Limiting plate; 52. Buffer pad; 510. Semicircular recess; 511. Front bending portion; 512. Middle limiting portion; 513. Rear bending portion. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be understood that the terms "length," "width," "thickness," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," and the like, indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0033] Reference Figure 1-9 A double-door linkage mechanism and an oven according to an embodiment of the present utility model are described.

[0034] In one embodiment, Figure 1-8 As shown, a double-door linkage mechanism is applied to the left door body 1 and the right door body 2 of a double-door oven. One side of the left door body 1 and the right door body 2 are respectively hinged to the opposite sides of the opening of the double-door oven, including a left connecting rod 11, a right connecting rod 12, a linkage bracket 13 and a roller assembly 4.

[0035] A slide groove is provided in the middle of the linkage bracket 13, and the roller assembly 4 is slidably arranged in the slide groove; one end of the left connecting rod 11 and one end of the right connecting rod 12 are both hinged to the roller assembly 4, the other end of the left connecting rod 11 is hinged to the left door body 1, and the other end of the right connecting rod 12 is hinged to the right door body 2.

[0036] Among them, the double-door oven may include a body shell 6, a cavity 3 located in the body shell and a control panel 7 arranged on the outer surface of the body shell 6. The specific position of the control panel 7 is not limited and can be arranged on one side of the left door body 1 or the right door body 2 or other positions on the outer surface of the body shell 6.

[0037] When implementing it specifically, Figure 1 The middle arrow indicates the rotation direction of the left door body 1 and the right door body 2 when the door is opened. Figure 3The middle arrow indicates the rotation direction of the left door body 1 and the right door body 2 when closing the door. When the user manually pushes and pulls the left door body 1 or the right door body 2, the slide groove of the linkage bracket 13 constitutes a guide rail for the movement of the roller assembly 4. The left connecting rod 11 or the right connecting rod 12 will drive the roller assembly 4 to move in the slide groove of the linkage bracket 13, so that the left door body 1 and the right door body 2 can be opened and closed synchronously, and the effect of double-door linkage switching can be achieved. The structure is simple and the operation is convenient.

[0038] The double-door linkage mechanism provided by the above embodiment can realize the linkage double opening and closing of the double-door oven door body, and reduces unnecessary auxiliary drive mechanisms. It has a simple structure, convenient operation, and safer and more reliable performance.

[0039] In this embodiment, the double-door linkage mechanism also includes a tension spring 14, one end of which is fixedly connected to the left or right side above the cavity 3 of the double-door oven, and the other end is connected to the left connecting rod 11 or the right connecting rod 12.

[0040] The number of tension springs 14 can be one or two. When only one tension spring 14 is provided, the tension spring 14 can be connected to either the left link 11 or the right link 12 to pull the left door body 1 or the right door body 2 inward to achieve automatic synchronous closing. To increase the pulling force on the door bodies, two tension springs 14 can also be provided, with one end of the tension spring 14 fixedly connected to the left side above the cavity 3 of the double-door oven and the other end connected to the left link 11, and the other end of the tension spring 14 fixedly connected to the right side above the cavity 3 of the double-door oven and the other end connected to the right link 12.

[0041] In this embodiment, the linkage bracket 13 is further provided with a compression spring 15 and a limiting assembly 5 , and the limiting assembly 5 includes a limiting piece 51 .

[0042] One end of the compression spring 15 is connected to the rear of the linkage bracket 13, and the other end is connected to the rear end of the limiting plate 51. The front end of the limiting plate 51 is rotatably connected to the front of the linkage bracket 13, and a semicircular recess 510 is provided at the front end of the limiting plate 51 near the slide groove.

[0043] During the movement of the roller assembly 4 to the front end of the chute, the side of the limiting piece 51 is stuck in the groove of the wheel surface of the roller assembly 4; when the roller assembly 4 moves to the front end of the chute, as shown in FIG. Figure 2 As shown by the middle arrow, the limit plate 51 moves toward the roller assembly 4 under the tension of the compression spring 15, so that the semicircular recess 510 clamps the roller assembly 4, so that the left door body 1 and the right door body 2 are in a door opening pause state when the door opening angle is the maximum.

[0044] Among them, the limiting plate 51 includes a front bending portion 511, an intermediate limiting portion 512 and a rear bending portion 513. The front bending portion 511 is bent toward the direction of the slide groove and is rotatably connected to the front part of the linkage bracket 13. The rear bending portion 513 is bent in the direction away from the roller assembly 4 and is connected to the compression spring 15. A semicircular recess 510 is provided on the intermediate limiting portion 512.

[0045] In specific implementation, when the roller assembly 4 is located in a non-front end position in the slide groove, the middle limiting portion 513 of the limiting plate 51 is parallel to the moving trajectory of the roller assembly 4 and its side is stuck in the groove on the wheel surface of the roller assembly 4, limiting the roller assembly 4 to prevent displacement; when the roller assembly 4 is located in the front end position of the slide groove, the semicircular recess 510 on the limiting plate 51 can clamp the roller assembly 4, thereby causing the left door body 1 and the right door body 2 to be in a paused state and not to return to close.

[0046] In this embodiment, the limiting assembly 5 also includes a buffer pad 52, which is arranged on the upper surface of the rear part of the limiting plate 51 and contacts the roller assembly 4 when the roller assembly 4 passes by, so that the left door body 1 and the right door body 2 are in a door closing buffer state.

[0047] Among them, since the side of the limiting piece 51 is stuck in the groove of the wheel surface of the roller assembly 4, the buffer pad 52 is also located on the side of the movement path of the roller assembly 4.

[0048] In specific implementation, during the process of door closing and rebounding, the roller assembly 4 coordinated with the left connecting rod 11 and the right connecting rod 12 slides back along the slide groove on the linkage bracket 13. After the roller assembly 4 hits the buffer pad 52, the sliding speed slows down, causing the left door body 1 and the right door body 2 to slowly close and close. This can not only slow down the door closing speed and solve the problem of easy pinching of hands when closing the door quickly in the existing technology, but also reduce the noise when the left door body 1 and the right door body 2 are closed, which can effectively improve the user experience.

[0049] In this embodiment, the maximum door opening angle range of the left door body 1 and the right door body 2 is 110°~120°; when the left door body 1 and the right door body 2 are in the door closing buffer state, the door opening angle range of the left door body 1 and the right door body 2 is 10°~20°.

[0050] In specific implementation, the angle of the left door body 1 and the right door body 2 when automatically rebounding to close the door can be set to less than 100°. When closing the door, the roller assembly 4 passes through the buffer pad 52, which can reduce the speed of door closing and reduce the impact sound when closing the door.

[0051] In this embodiment, the roller assembly 4 includes a roller shaft 41, a retaining spring 42, a roller 43 and a fastening plate 44. The retaining spring 42, the roller 43 and the fastening plate 44 are sequentially sleeved on the roller shaft 41 from top to bottom.

[0052] The wheel surface of the roller 43 has a first annular groove and a second annular groove which are parallel to each other. The side of the limiting piece 51 is stuck in the first annular groove, and the two side edges of the sliding groove are stuck in the second annular groove.

[0053] Among them, the retaining spring 42 and the fastening plate 44 can fasten the roller 43 to prevent the roller 43 from moving axially along the roller shaft 41, and the structure is more stable; at the same time, the roller 43 is limited by the limiting plate 51 through the first annular groove on its wheel surface, and is slidably arranged in the slide groove through the second annular groove, and the installation structure is more stable.

[0054] In this embodiment, the left door body 1 and the right door body 2 both include a door shaft 21, a door clamp 22, a door panel 23 and a door handle 24; the door clamp 22 is rotatably hingedly installed on the opposite sides of the opening of the double-door oven through the door shaft 21, the left connecting rod 11 is hinged to the door clamp 22 of the left door body 1, and the right connecting rod 12 is hinged to the door clamp 22 of the right door body 2; one end of the door panel 23 is fixedly installed on the door clamp 22, and the other end is provided with a door handle 24.

[0055] Among them, a connecting hole is provided at the upper end of the door clamp 22, one end of the left connecting rod 11 is hinged to the upper end of the door clamp 22 of the left door body 1 through the connecting hole, and one end of the right connecting rod 12 is hinged to the upper end of the door clamp 22 of the right door body 2 through the connecting hole; the door clamp 22 is used to fix the door panel 23, and a door handle 24 is installed on the door panel 23 to facilitate users to manually pull the door.

[0056] In this embodiment, the door panel 23 is made of glass. The door panel 23 can be made of high-temperature resistant glass, so that the user can understand the food baking status through the door panel 23 in time.

[0057] In another embodiment, Figure 8-9 As shown, the utility model provides an oven, which includes the double-door linkage mechanism as in any of the above embodiments.

[0058] The oven provided in the above embodiment adopts a left and right double-door structure, which reduces the space occupied by the operation compared with a single-door oven; and can realize the opening and closing linkage of the two side doors through the double-door linkage mechanism, so that the two side doors can be opened and closed synchronously, making the operation more convenient.

[0059] Other structures and operations of a double-door linkage mechanism and an oven according to an embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0060] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0061] In the description of this specification, the reference terms "embodiment", "specific embodiment", "example", etc. mean that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present invention.

[0062] 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 can be combined with each other in any suitable manner in any one or more embodiments or examples without interference or contradiction.

Claims

1. A double-door linkage mechanism, applied to a left door (1) and a right door (2) of a double-door oven, wherein one side of the left door (1) and the right door (2) are hinged to opposite sides of an opening of the double-door oven, and characterized in that: It comprises a left connecting rod (11), a right connecting rod (12), a linkage bracket (13) and a roller assembly (4); A sliding groove is provided in the middle of the linkage bracket (13), and the roller assembly (4) is slidably arranged in the sliding groove; one end of the left link (11) and one end of the right link (12) are both hinged to the roller assembly (4), the other end of the left link (11) is hinged to the left door body (1), and the other end of the right link (12) is hinged to the right door body (2).

2. A double door linkage mechanism according to claim 1, characterized in that: It also includes a tension spring (14), one end of which is fixedly connected to the left or right side above the cavity (3) of the double-door oven, and the other end of which is connected to the left connecting rod (11) or the right connecting rod (12).

3. The double-door linkage mechanism according to claim 2, characterized in that: The linkage bracket (13) is further provided with a compression spring (15) and a limiting assembly (5), and the limiting assembly (5) includes a limiting piece (51); One end of the compression spring (15) is connected to the rear portion of the linkage bracket (13), and the other end is connected to the rear end of the limiting plate (51). The front end of the limiting plate (51) is rotatably connected to the front portion of the linkage bracket (13), and a semicircular recess (510) is provided at the front end of the limiting plate (51) near the sliding groove. During the process of the roller assembly (4) moving toward the front end of the slide, the side of the limiting plate (51) is stuck in the groove of the wheel surface of the roller assembly (4); when the roller assembly (4) moves to the front end of the slide, the limiting plate (51) moves toward the direction of the roller assembly (4) under the pulling force of the compression spring (15), so that the semicircular recess (510) is stuck in the roller assembly (4), so that the left door body (1) and the right door body (2) are in a door opening pause state when they are at the maximum door opening angle.

4. The double-door linkage mechanism according to claim 3, characterized in that: The limiting assembly (5) further includes a buffer pad (52), which is arranged on the upper surface of the rear portion of the limiting plate (51) and contacts the roller assembly (4) when the roller assembly (4) passes by, so that the left door body (1) and the right door body (2) are in a door closing buffer state.

5. The double-door linkage mechanism according to claim 4, characterized in that: The limiting piece (51) comprises a front bending portion (511), an intermediate limiting portion (512) and a rear bending portion (513); the front bending portion (511) is bent toward the direction of the slide groove and is rotatably connected to the front portion of the linkage bracket (13); the rear bending portion (513) is bent in a direction away from the roller assembly (4) and is connected to the compression spring (15); and the semicircular recess (510) is provided on the intermediate limiting portion (512).

6. The double-door linkage mechanism according to claim 4, characterized in that: The maximum door opening angle ranges of the left door body (1) and the right door body (2) are both 110° to 120°; When the left door body (1) and the right door body (2) are in a door closing buffer state, the door opening angle ranges of the left door body (1) and the right door body (2) are both 10° to 20°.

7. A double door linkage mechanism according to any one of claims 3 to 6, characterized in that: The roller assembly (4) comprises a roller shaft (41), a clamping spring (42), a roller (43) and a fastening plate (44), wherein the clamping spring (42), the roller (43) and the fastening plate (44) are sequentially sleeved on the roller shaft (41) from top to bottom; The wheel surface of the roller (43) is provided with a first annular groove and a second annular groove which are parallel to each other; the side edge of the limiting piece (51) is clamped in the first annular groove, and the two side edges of the sliding groove are clamped in the second annular groove.

8. A double door linkage mechanism according to any one of claims 1 to 6, characterized in that: The left door body (1) and the right door body (2) both include a door shaft (21), a door clamp (22), a door panel (23) and a door handle (24); The door clamp (22) is rotatably hingedly mounted on opposite sides of the opening of the double-door oven via the door shaft (21); the left connecting rod (11) is hingedly connected to the door clamp (22) of the left door body (1); and the right connecting rod (12) is hingedly connected to the door clamp (22) of the right door body (2); One end of the door panel (23) is fixedly mounted on the door clamp (22), and the other end is provided with the door handle (24).

9. The double-door linkage mechanism according to claim 8, characterized in that: The door panel (23) is made of glass.

10. An oven, characterized in that: It comprises a double-door linkage mechanism as described in any one of claims 1 to 9.

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