CN201714206U - Pull-down door hinge - Google Patents

Abstract

The utility model provides a drop-down formula hinge can be used to domestic appliance such as microwave oven, electric oven, including the hinge subassembly, the hinge subassembly includes door body support, hinge support, spring and furnace body connection frame, door body support is articulated with furnace body connection frame, and hinge support front end is articulated with door body support, and rear end slidable ground cover is put on furnace body connection frame, and spring one end is hung and is detained on the hinge support rear end, and the other end of spring is used for connecting the furnace body. The utility model discloses only need during the installation directly with the door portion AND gate body coupling on the door body support, cavity connecting portion and furnace body coupling on the furnace body link, the other end of spring fix on the furnace body can. Simple structure, convenient installation and lower cost.

Description

A drop-down door hinge

technical field

The utility model relates to a door hinge, in particular to a pull-down door hinge for household appliances such as microwave ovens and electric ovens, and belongs to the innovative technology of the door hinge structure used in household appliances such as microwave ovens and electric ovens.

Background technique

At present, the switch door hinge structure used in household appliances such as microwave ovens and electric ovens is relatively complicated, and the installation is troublesome, and additional auxiliary processes are required to complete the assembly and disassembly, the cost is relatively high, and it is not easy to disassemble.

Utility model content

The purpose of this utility model is to consider the above problems and provide a pull-down door hinge for household appliances such as microwave ovens and electric ovens that is easy to install and disassemble. The utility model has the advantages of simple structure, easy assembly and low cost.

The technical solution to realize the purpose of this utility model is to include a hinge assembly, the hinge assembly includes a door body bracket, a hinge support, a spring and a furnace body connecting frame, the door body bracket is hinged with the furnace body connecting frame, and the front end of the hinge support is connected to the door The body bracket is hinged, the rear end is slidably sleeved on the furnace body connecting frame, one end of the spring is hooked and buckled on the rear end of the hinge support, and the other end of the spring is used to connect the furnace body.

The above-mentioned door body bracket includes a connecting door part conveniently fixedly connected with the door body, the lower end of the door body bracket has lower double ear holes, and the middle part has upper double ear holes; the front end of the hinge support has a first connecting hole, and the rear part has The second connection hole has a spring hook at the rear end; the furnace body connection frame has a cavity connection part and a guide groove, and the front end has a shaft hole, and one end of the spring is fixed on the spring hanger at the rear end of the hinge support On the buckle part; the first connecting shaft passes through the rotating shaft hole of the furnace body connecting frame and the double ear holes under the door body bracket to movably connect the door body bracket and the furnace body connecting frame together, and the door body bracket can rotate around the first connecting shaft ; The second connecting shaft passes through the first connecting hole and the hinge support is connected in series between the upper ear holes of the door body bracket; the third connecting shaft passes through the guide groove of the furnace body connecting frame and the second connecting hole and is riveted to connect the hinge The support and the connecting frame of the furnace body are riveted together, and the third connecting shaft can slide or/and roll freely in the guide groove.

In order to control the maximum opening degree of the door body, the front end of the connecting frame of the furnace body has a stop part and a limit shaft installation hole, and a limit shaft is installed on the limit shaft installation hole.

The above-mentioned hinge assembly includes left and right two symmetrical to each other.

When the utility model is installed and used on household appliances such as microwave ovens and electric ovens, the connecting door part on the door body bracket is connected with the door body, the cavity connecting part on the furnace body connecting frame is connected with the furnace body, and the other end of the spring is fixed on the furnace body. During the downward opening process of the door under the action of external force, the furnace door and the connecting frame of the door body rotate around the first connecting shaft together, and at the same time drive the hinge support to rotate around the second connecting shaft, and the hinge support drives the third connecting shaft in the guide groove Sliding outward, the spring is stretched to generate a closing force, and the spring force is overcome by the weight of the door, the furnace door continues to fall, and the force generated by the spring continues to increase. When the door falls to a preset door opening, the hinge The support top is pressed on the limit shaft and/or the stop part and cannot continue to move, so the door body support can not rotate, the furnace door stops moving, the body weight of the door can still overcome the pulling force of the spring, and the door is in an open static state. When closing the door, it is necessary to overcome the weight of the door under the joint action of external force and spring force, and the opening of the furnace door gradually decreases until the furnace door moves to a nearly vertical state and then closes with the furnace cavity, and the spring returns to the original natural state, realizing close the door.

When the utility model is installed, it is only necessary to directly connect the connecting door part on the door body support with the door body, the cavity connecting part on the furnace body connecting frame is connected with the furnace body, and the other end of the spring is fixed on the furnace body. The structure is simple, the installation is convenient, and the cost is low.

Description of drawings

Fig. 1 is a stereogram of the present utility model (comprising two left and right symmetry, not adorned spring);

Fig. 2 is a three-dimensional exploded view of the left hinge assembly of the utility model (without spring);

Fig. 3 is a schematic diagram of the maximum opening of the left hinge of the utility model (releasing the spring);

Fig. 4 is a three-dimensional schematic diagram of the opening and closing state of the utility model installed on the microwave oven.

Detailed ways

Below in conjunction with specific embodiment the utility model is further described.

As shown in Figure 1, the utility model includes a left hinge assembly and a right hinge assembly which are symmetrical to each other. Only the specific implementation of the left hinge assembly will be specifically analyzed below. As shown in Fig. 2, Fig. 3 and Fig. 4, the left hinge assembly described in the utility model includes a door body bracket 1, a hinge support 2, a spring 4 and a furnace connecting frame 3, and the side of the door body bracket 1 has a convenient The connecting door part 11 fixedly connected with the door body 9 has a lower double ear hole 12 at the lower end and an upper double ear hole 13 at the middle part; the front end of the hinge support 2 has a first connecting hole 21, and the rear part has a second connecting hole 22. The rear end part has a spring hook part 23; the furnace connecting frame 3 has a cavity connecting part 31 and a strip-shaped guide groove 32, and the front part has a stop part 33, a rotating shaft hole 34 and a limit shaft installation hole 35, the limit shaft 5 is installed on the limit shaft installation hole 35, and one end of the spring 4 is fixed on the spring hook part 23 at the rear end of the hinge support 2. The first connecting shaft 6 passes through the rotating shaft hole 34 of the furnace body connecting frame 3 and the double ear hole 12 under the door body bracket 1 to hinge the door body connecting frame 1 and the furnace body connecting frame 3 movably together, and the door body connecting frame 1 can Rotate around the first connecting shaft 6; the second connecting shaft 7 passes through the first connecting hole 21 to connect the hinge support 2 in series between the upper ear holes 13 of the door bracket 1, and the third connecting shaft 8 passes through the guide groove 32 and The second connecting hole 22 is riveted in the rear, and the hinge support 2 and the furnace body connecting frame 3 are riveted together, and the third connecting shaft 8 can freely slide or/and roll in the guide groove 32 .

When the utility model is installed and used, as shown in Figure 4, the connecting door part 11 on the door body bracket 1 is connected with the door body 9 of household appliances such as microwave ovens and electric ovens, and the cavity connecting part 31 on the furnace body connecting frame 3 Connected with the furnace body 10, the other end of the spring 4 is fixed on the furnace body 10. During the opening process of the door body 9 under the action of external force, the furnace door body 9 and the door body connecting frame 1 rotate around the first connecting shaft 6 together, and at the same time drive the hinge support 2 to rotate around the second connecting shaft 7, and the hinge support 2 drives the second connecting shaft 7 The three connecting shafts 8 slide outward in the guide groove 32, and the spring 4 is stretched to generate a door-closing pulling force, which overcomes the spring pulling force under the action of the gravity of the door body 9, and the furnace door 9 continues to descend, and the pulling force generated by the spring 4 continues to increase. When the door body 9 When falling to a certain preset door opening (85 degrees), the hinge support 2 is pressed against the limit shaft 5 and/or the stop portion 33 and cannot continue to move (slid along the guide groove 32, around the second connection Axle 7 rotates), thereby door body support 1 just can not rotate, and furnace door 9 stops motion, and door body 9 gravity still can overcome the pulling force of spring 4, and furnace door 9 is in open static state. When closing the door, it is necessary to overcome the gravity of the door body 9 under the joint action of external force and spring force, and the opening of the furnace door 9 gradually becomes smaller until the furnace door 9 moves to a nearly vertical state and then closes with the furnace chamber, and the spring 4 returns to the original position. In the natural state, the door is closed.

Claims (4)

1. pull-down door hinge, comprise hinge component, it is characterized in that described hinge component comprises a body support frame (1), hinge support (2), spring (4) and body of heater link (3), described door body support frame (1) is hinged with body of heater link (3), hinge support (2) front end is hinged with door body support frame (1), the rear end is nested with slidably on body of heater link (3), and spring (4) one ends buckle on hinge support (2) rear end, and the other end is the free end that is used to connect body of heater.

2. pull-down door hinge according to claim 1, it is characterized in that described door body support frame (1) comprises the convenient door portion of company (11) that is fixed together with the door body, the bottom of door body support frame (1) has following ears hole (12), and the middle part has last ears hole (13); Described hinge support (2) leading section has first connecting hole (21), and the rear portion has second connecting hole (22), and rearward end has spring buckle hanging unit (23); Described body of heater link (3) has cavity connecting portion (31) and guide groove (32), and leading section has shaft hole (34), and an end of described spring (4) is fixed on the spring buckle hanging unit (23) of hinge support (2) rearward end; First connecting axle (6) passes ears hole (12) under described body of heater link (3) shaft hole (34) and the door body support frame and door body support frame (1) and body of heater link (3) is linked together versatilely, and door body support frame (1) can rotate around first connecting axle (6); Second connecting axle (7) passes first connecting hole (21) and hinge support (2) is serially connected with between the last ears hole (13) of a body support frame (1); The 3rd connecting axle (8) passes the guide groove (32) and the riveted joint of second connecting hole (22) back of body of heater link (3), and hinge support (2) and body of heater link (3) riveting are connected together, and the 3rd connecting axle (8) can be free to slide or/and roll in guide groove (32).

3. pull-down door hinge according to claim 2 is characterized in that described body of heater link (3) leading section has position-arresting part (33), limit shaft installing hole (35), is equipped with limit shaft (5) on the described limit shaft installing hole (35).

4. according to claim 1 or 2 or 3 described pull-down door hinges, it is characterized in that described above-mentioned hinge component comprise symmetrical about two.

Images