Hinge for turning-down door and oven turning-down door connecting structure

Abstract

The utility model discloses a hinge for a flip-down door and an oven flip-down door connecting structure, the hinge comprises a slide block, a tension spring and a fixed seat, the fixed seat comprises a side plate and a bottom plate, the side plate and the bottom plate are connected to form an L shape, a guide rivet is arranged on the side plate, the slide block is provided with a V-shaped groove which is in sliding fit with the guide rivet, and the slide block is provided with a spring. One end of the sliding block extends out of the front end of the side plate and is provided with a door plate connecting part, and the tension spring is connected between the fixing base and the bottom of the sliding block. The hinge is provided with the independent fixing base, the sliding block and the tension spring are both arranged on the fixing base, the relative positions of the sliding block and the tension spring are fixed, the hinge can be directly installed on the oven, the fixing position point of the tension spring does not need to be redesigned, the appropriate tension spring can be selected according to the weights of different door plates, and the hinge is convenient to use. Moreover, along with the increase of the opening angle of the door plate, the tension spring is gradually increased, and larger acting force is easily generated to balance the gravity of the door plate, so that the door plate can stop randomly, and a desktop is prevented from being impacted by instant downward turning or a glass door is prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to a hinge, in particular to a hinge for a downward-opening door and a connection structure of a downward-opening door of an oven. Background Art

[0002] Patent Publication No. CN202112939 discloses an improved structure of an electric oven door on January 18, 2012, including components such as an electric oven main body, an oven door, and a door pulling mechanism. The utility model adopts a door pulling mechanism composed of a door pull piece, at least two tension springs, a pulley assembly, a pulley seat, and a pulley support plate. And, by providing a pulley hole with multiple-stage pause recesses on the door pull piece and matching with a reasonable pulley assembly, the oven door can also pause at multiple angles. When the oven door of this structure is opened, the pulley can only stop when it abuts against the pause recess. If the user opens the oven door to a large angle at one time during normal use, the smoothness is poor, and there is a feeling of the oven door jumping during the process; when it is necessary to stop the door during the opening process, it is necessary to find the feeling of the pulley falling into the pause recess. Otherwise, if the pulley is just located between two pause recesses, the oven door is easily closed instantly under the action of the tension spring, and, due to inertia, the pulley jumps over the pause recess at once, ultimately resulting in the oven door closing and generating an impact noise; or, the oven door instantly forms an opening action under the action of its gravity, and, under the action of gravity acceleration, the oven door overcomes the tension of the tension spring, and the pulley jumps over the pause recess at once, ultimately resulting in the oven door opening and generating a noise of hitting the table, and even easily breaking the oven glass door. Therefore, an oven hinge that can stop arbitrarily when opening is needed.

[0003] In addition, one end of the tension spring of the above structure is connected to the rear end plate of the oven main body. As the size of the oven and the weight of the oven door change, the size, strength of the tension spring, and the door pulling mechanism also need to be adjusted, increasing the difficulty of production and research and development. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a connection structure of a downward-opening door of an oven with a compact structure, convenient installation, and wide application range.

[0005] The purpose of the utility model is achieved as follows:

[0006] A hinge for a downward-opening door includes a slider and a tension spring, and is characterized in that: it further includes a fixed seat, the fixed seat includes a side plate and a bottom plate, the side plate and the bottom plate are connected into an L shape, a guiding rivet is provided on the side plate, the slider is provided with a V-shaped groove for sliding cooperation with the guiding rivet, one end of the slider extends outside the front end of the side plate and is provided with a door panel connecting portion, and the tension spring is connected between the fixed seat and the bottom of the slider.

[0007] The purpose of the utility model can also be solved by adopting the following technical measures:

[0008] As a more specific solution, the slider is located above the bottom plate. The rear end of the side plate and the bottom of the slider are respectively provided with a first hanging ear and a second hanging ear. The two ends of the tension spring are respectively connected to the first hanging ear and the second hanging ear. The first hanging ear is located above the bottom plate, and the second hanging ear faces away from the side plate.

[0009] As a further solution, the door panel connecting part of the slider is a hook.

[0010] As a further solution, the included angle α between the two sides of the V-shaped groove is 130 degrees to 140 degrees.

[0011] As a further solution, the surface of the bottom plate is provided with a connection hole penetrating through its upper and lower sides. The rear end of the bottom plate is further provided with an insertion piece, and the insertion piece is L-shaped.

[0012] Another object of the present utility model is to provide a connection structure for the lower flip door of an oven with a reasonable structure and capable of being stopped arbitrarily.

[0013] Another object of the present utility model is achieved as follows:

[0014] A connection structure for the lower flip door of an oven, comprising a box body, a door panel and a hinge. An opening is provided on the front side of the box body. The door panel is arranged on the opening. The lower end of the door panel is rotatably connected to the box body. A support arm is further arranged inside the lower end of the door panel. The hinge comprises a slider and a tension spring. It is characterized in that: the hinge further comprises a fixed seat. The fixed seat comprises a side plate and a bottom plate. The side plate and the bottom plate are connected into an L shape. The bottom plate is fixedly connected to the outer bottom of the box body. A guiding rivet is arranged on the side plate. The slider is provided with a V-shaped groove which is slidably matched with the guiding rivet. One end of the slider extends out of the front end of the side plate and is provided with a door panel connecting part. The door panel connecting part is rotatably matched with the support arm. The tension spring is connected between the fixed seat and the bottom of the slider.

[0015] The object of the present utility model can also be solved by adopting the following technical measures:

[0016] As a more specific solution, the box body comprises left and right side box plates, a rear box plate, a front frame, a top box plate and a bottom box plate. The left and right side box plates, the rear box plate and the front frame are connected between the top box plate and the bottom box plate. The left and right ends of the bottom box plate protrude outside the side box plates. The hinge is fixedly connected to the bottom box plate through its bottom plate. The inner side of the front frame forms the opening. The door panel is rotatably matched with the front frame through a first pin shaft;

[0017] As a further solution, the support arm is located above the first pin shaft and is provided with a second pin shaft. The door panel connecting part of the slider is a hook, and the hook is hung on the second pin shaft.

[0018] As a further solution, a inserting piece is also provided at the rear end of the bottom plate of the hinge, and the inserting piece is L-shaped; a jack is provided on the bottom box plate corresponding to the inserting piece, and after the inserting piece passes through the jack, it abuts against the bottom surface of the bottom box plate. The bottom plate is placed on the top surface of the bottom box plate and is fixedly connected to the bottom box plate through a connecting piece. Connecting holes penetrating through the upper and lower sides thereof are provided on the surfaces of the bottom plate and the bottom box plate corresponding to the connecting piece.

[0019] As a further solution, the slider is located above the bottom plate. First hanging ears and second hanging ears are respectively provided at the rear end of the side plate and the bottom of the slider. Two ends of the tension spring are respectively connected to the first hanging ear and the second hanging ear. The first hanging ear is located above the bottom plate, and the second hanging ear faces away from the side plate.

[0020] As a further solution, the included angle α between both sides of the V-shaped groove is 130 degrees to 140 degrees.

[0021] The beneficial effects of the present utility model are as follows:

[0022] (1) The hinge of the present utility model has an independent fixed seat. The slider and the tension spring are both arranged on the fixed seat, and their relative positions are fixed. It can be directly installed on the oven without the need to redesign the fixed position point of the tension spring. Just select a suitable tension spring according to the weight of different door panels, and it is convenient to use. Moreover, as the opening angle of the door panel increases, the tension spring gradually lengthens, and it is easy to generate a greater acting force to balance the gravity of the door panel, so that the door panel can stop arbitrarily, avoiding instant downward flipping and hitting the tabletop or damaging the glass door.

[0023] (2) The tension spring of the present utility model is located below the slider, does not interfere with the movement of the slider, and can make full use of the length of the fixed seat, making the hinge structure more compact.

[0024] (3) The tail of the fixed seat of the hinge of the present utility model is provided with an inserting piece, and the box body of the oven is provided with a jack corresponding to the inserting piece. The hinge can be quickly positioned through the cooperation of the inserting piece and the jack, and then the fixed seat is fixed to the box body through a connecting piece (screw), which is convenient for installation. Description of the Drawings

[0025] Figure 1 It is a schematic exploded view of an embodiment of the hinge in the present utility model.

[0026] Figure 2 It is a schematic view of the hinge structure at an angle in the present utility model.

[0027] Figure 3 It is a schematic view of the hinge structure at another angle in the present utility model.

[0028] Figure 4 It is a schematic view of the connection structure of the oven door panel, box body and hinge in the present utility model.

[0029] Figure 5 is Figure 4 The enlarged structural schematic diagram at position A in

[0030] Figures 6 to 9 It is the structural schematic diagrams of multiple states during the process of the door panel of the heavy-duty oven of the present utility model from being closed to being opened. Specific embodiments

[0031] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments:

[0032] See Figures 1 to 3 As shown, a hinge for a downward-opening door includes a slider 2, a tension spring 3, and a fixed seat 1. The fixed seat 1 includes a side plate 11 and a bottom plate 12. The side plate 11 and the bottom plate 12 are connected to form an L shape. A guiding rivet 15 is provided on the side plate 11. The slider 2 is provided with a V-shaped groove 21 that slidably cooperates with the guiding rivet 15. One end of the slider 2 extends outside the front end of the side plate 11 and is provided with a door panel connection portion. The tension spring 3 is connected between the bottom of the fixed seat 1 and the slider 2.

[0033] The slider 2 is located above the bottom plate 12. A first hanging ear 13 and a second hanging ear 23 are respectively provided at the rear end of the side plate 11 and the bottom of the slider 2. Two ends of the tension spring 3 are respectively connected to the first hanging ear 13 and the second hanging ear 23. The first hanging ear 13 is located above the bottom plate 12, and the second hanging ear 23 faces away from the side plate 11.

[0034] The door panel connection portion of the slider 2 is a hook 22.

[0035] The included angle α between both sides of the V-shaped groove 21 is 130 degrees to 140 degrees.

[0036] The surface of the bottom plate 12 is provided with a connection hole 16 penetrating through its upper and lower sides. The rear end of the bottom plate 12 is further provided with an insertion piece 14, and the insertion piece 14 is in an L shape.

[0037] See Figures 4 to 6 As shown, an oven downward-opening door connection structure includes a box body, a door panel 7, and a hinge 10. An opening is provided on the front side of the box body. The door panel 7 is arranged on the opening. The lower end of the door panel 7 is rotatably connected to the box body. A support arm 72 is further provided inside the lower end of the door panel 7. The hinge 10 includes a slider 2 and a tension spring 3. The hinge 10 further includes a fixed seat 1. The fixed seat 1 includes a side plate 11 and a bottom plate 12. The side plate 11 and the bottom plate 12 are connected to form an L shape. The bottom plate 12 is fixedly connected to the outer bottom of the box body. A guiding rivet 15 is provided on the side plate 11. The slider 2 is provided with a V-shaped groove 21 that slidably cooperates with the guiding rivet 15. One end of the slider 2 extends outside the front end of the side plate 11 and is provided with a door panel 7 connection portion. The door panel 7 connection portion is rotatably matched with the support arm 72. The tension spring 3 is connected between the bottom of the fixed seat 1 and the slider 2.

[0038] The box body includes left and right side box plates 4, a rear box plate, a front frame 6, a top box plate and a bottom box plate 5. The left and right side box plates 4, the rear box plate and the front frame 6 are connected between the top box plate and the bottom box plate 5. The left and right ends of the bottom box plate 5 protrude outside the side box plates 4. The hinge 10 is fixedly connected to the bottom box plate 5 through its bottom plate 12. The opening is formed inside the front frame 6. The door panel 7 is rotationally matched with the front frame 6 through a first pin shaft 73 (the fulcrum of the first pin shaft 73 is point O); the support arm 72 is located above the first pin shaft 73 and is provided with a second pin shaft 74. The door panel connecting part of the slider 2 is a hook 22, and the hook 22 is hooked on the second pin shaft 74.

[0039] The door panel 7 is a glass plate, and a hinge seat 71 is provided at its lower end. The support arm 72 is arranged on the hinge seat 71. Therefore, a shaft hole is provided at the lower end of the hinge seat 71 corresponding to the first pin shaft 73.

[0040] A plug piece 14 is further provided at the rear end of the bottom plate 12 of the hinge 10. The plug piece 14 is L-shaped; a jack 51 is provided on the bottom box plate 5 corresponding to the plug piece 14. After the plug piece 14 passes through the jack 51, it abuts against the bottom surface of the bottom box plate 5. The bottom plate 12 is placed on the top surface of the bottom box plate 5 and is fixedly connected to the bottom box plate 5 through a connecting piece. Connecting holes 16 penetrating through the upper and lower sides thereof are provided on the surfaces of the bottom plate 12 and the bottom box plate 5 corresponding to the connecting piece.

[0041] The slider 2 is located above the bottom plate 12. A first hanging ear 13 and a second hanging ear 23 are respectively provided at the rear end of the side plate 11 and the bottom of the slider 2. The two ends of the tension spring 3 are respectively connected to the first hanging ear 13 and the second hanging ear 23. The first hanging ear 13 is located above the bottom plate 12, and the second hanging ear 23 faces away from the side plate 11.

[0042] The included angle α between the two sides of the V-shaped groove 21 is 130 degrees to 140 degrees.

[0043] Its working principle is: As shown in Figure 4 , the door panel 7 is turned downward and opened along the R arrow direction. As shown in Figure 6 , when the door panel is in the closed state, the tension spring 3 is in the shortest length LO state, the slider 2 is at the lowest position, the force arm from the acting point of the tension spring on the slider 2 (i.e., at the second hanging ear 23) to the guide rivet 15 is close to the force arm from the second pin shaft 74 (support arm) to the guide rivet 15. At the same time, the door panel 7 is in a vertical state and does not generate a component force at the support arm. The tension spring keeps the door panel in the closed state.

[0044] As shown in Figure 7As shown, the door panel opens against the acting force of the tension spring. The door panel begins to generate a component force on the support arm. At the same time, the height of the outer end of the slider is raised. The lever arm length from the second pin shaft 74 to the guide rivet 15 increases, and the lever arm length from the acting point of the tension spring on the slider 2 to the guide rivet 15 shortens. However, at the same time, the tension spring is stretched to the length L1. Therefore, the acting force of the tension spring increases to balance the acting force of the door panel, enabling the door panel to maintain the opened angle.

[0045] Combined with Figure 8 As shown, continue to open the door panel. The slider continues to rise to the maximum height. The guide rivet 15 falls into the lowest position of the V-shaped groove 21, forming a turning point, which has a certain jamming effect. Moreover, the tension spring continues to be stretched to the length L2, and the acting force of the tension spring further increases to balance the acting force of the door panel, further enabling the door panel to maintain the opened angle.

[0046] Combined with Figure 9 As shown, continue to open the door panel until it is in the fully opened state. The door panel generates the maximum component force on the support arm and causes the tension spring to continue to be stretched to the length L3. The acting force of the tension spring further increases to balance the acting force of the door panel, and continues to enable the door panel to maintain the opened angle.

[0047] The above is the preferred solution of the present invention, which shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A hinge for a downward-opening door, comprising a slider (2) and a tension spring (3), characterized in that: It further includes a fixed seat (1), the fixed seat (1) includes a side plate (11) and a bottom plate (12), the side plate (11) and the bottom plate (12) are connected into an L shape, a guide rivet (15) is provided on the side plate (11), the slider (2) is provided with a V-shaped groove (21) which is slidably matched with the guide rivet (15), one end of the slider (2) extends outside the front end of the side plate (11) and is provided with a door panel connecting portion, and the tension spring (3) is connected between the bottom of the fixed seat (1) and the slider (2).

2. The hinge for a downward-opening door according to claim 1, characterized in that: The slider (2) is located above the bottom plate (12), a first hanging ear (13) and a second hanging ear (23) are respectively provided at the rear end of the side plate (11) and the bottom of the slider (2), two ends of the tension spring (3) are respectively connected to the first hanging ear (13) and the second hanging ear (23), the first hanging ear (13) is located above the bottom plate (12), and the second hanging ear (23) faces away from the side plate (11).

3. The hinge for a downward-opening door according to claim 1, characterized in that: The door panel connecting portion of the slider (2) is a hook (22).

4. The hinge for a downward-opening door according to claim 1, characterized in that: The included angle α between the two sides of the V-shaped groove (21) is 130 degrees to 140 degrees.

5. The hinge for a downward-opening door according to claim 1, characterized in that: The surface of the bottom plate (12) is provided with a connection hole (16) penetrating through its upper and lower sides, and a tab (14) is further provided at the rear end of the bottom plate (12), and the tab (14) is in an L shape.

6. An oven downward-opening door connection structure, comprising a box body, a door panel (7) and a hinge (10). An opening is provided on the front side of the box body, the door panel (7) is arranged on the opening, the lower end of the door panel (7) is rotatably connected to the box body, and an arm (72) is further arranged inside the lower end of the door panel (7). The hinge (10) comprises a slider (2) and a tension spring (3), and is characterized in that: The hinge (10) further includes a fixed seat (1), the fixed seat (1) includes a side plate (11) and a bottom plate (12), the side plate (11) and the bottom plate (12) are connected into an L shape, the bottom plate (12) is fixedly connected to the outer bottom of the box body, a guide rivet (15) is provided on the side plate (11), the slider (2) is provided with a V-shaped groove (21) which is slidably matched with the guide rivet (15), one end of the slider (2) extends outside the front end of the side plate (11) and is provided with a connection portion for the door panel (7), the connection portion of the door panel (7) is rotatably matched with the support arm (72), and the tension spring (3) is connected between the bottom of the fixed seat (1) and the slider (2).

7. The oven lower flip door connection structure according to claim 6, characterized in that: The box body includes left and right side box plates (4), a rear box plate, a front frame (6), a top box plate and a bottom box plate (5), the left and right side box plates (4), the rear box plate and the front frame (6) are connected between the top box plate and the bottom box plate (5), the left and right ends of the bottom box plate (5) protrude outside the side box plates (4), the hinge (10) is fixedly connected to the bottom box plate (5) through its bottom plate (12), the inner side of the front frame (6) forms the opening, and the door panel (7) is rotatably matched with the front frame (6) through a first pin shaft (73); The support arm (72) is located above the first pin shaft (73) and is provided with a second pin shaft (74), the door panel (7) connection portion of the slider (2) is a hook (22), and the hook (22) is hooked to the second pin shaft (74).

8. The oven lower flip door connection structure according to claim 7, characterized in that: A tab (14) is also provided at the rear end of the bottom plate (12) of the hinge (10), and the tab (14) is L-shaped; a jack (51) is provided on the bottom box plate (5) corresponding to the tab (14). After the tab (14) passes through the jack (51), it abuts against the bottom surface of the bottom box plate (5). The bottom plate (12) is placed on the top surface of the bottom box plate (5) and is fixedly connected to the bottom box plate (5) through a connecting member. Connecting holes (16) penetrating through the upper and lower sides thereof are provided on the surfaces of the bottom plate (12) and the bottom box plate (5) corresponding to the connecting member.

9. The oven downward-opening door connection structure according to claim 6, characterized in that: The slider (2) is located above the bottom plate (12). A first hanging ear (13) and a second hanging ear (23) are respectively provided at the rear end of the side plate (11) and the bottom of the slider (2). Two ends of the tension spring (3) are respectively connected to the first hanging ear (13) and the second hanging ear (23). The first hanging ear (13) is located above the bottom plate (12), and the second hanging ear (23) faces away from the side plate (11).

10. The oven lower flap door connection structure according to claim 6, characterized in that: The included angle α between the two sides of the V-shaped groove (21) is 130 degrees to 140 degrees.

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