CN204804533U - Drop -down formula of oven hinge that opens door - Google Patents

Abstract

A pull-down door-opening hinge for an oven, characterized in that it includes a base plate fixedly connected to the box body and a guide groove plate arranged on the base plate. Pull arm, the rear end of the pull arm is equipped with rollers that can slide back and forth along the guide groove, and there is also a tension spring between the rear end of the pull arm and the base plate, which generates tension and always pulls the pull arm backward so that the oven door is always in position. Disabled. The front end of the pull arm is provided with a hook, which can be quickly hooked and installed with the hinge shaft fixed on the box door. The beneficial effects of the utility model are: 1. The pull arm in this case is arranged in a crescent shape, so when the box door is opened, the pull arm extends downward in an arc shape, avoiding a gap between its bottom and the box door, and making its shape At the same time, it is more beautiful, and the gap between the two is avoided, which may easily cause safety accidents such as pinching the user.

Description

An oven pull-down door hinge

technical field

The utility model relates to a hardware fitting, in particular to a pull-down door opening hinge for an oven.

Background technique

Hardware hinges are widely used in household appliances, furniture and hardware fields as connecting parts such as revolving doors and windows. For example, oven doors, oven doors, etc. are also connected by hinges. The door and box of the oven need to be in a sealed state, and the oven door presses the sealing ring of the oven liner so that the heat of the oven will not be emitted to the outside during the heating and baking process, so as to improve the baking efficiency. The most important thing to realize the above functions is the performance of the hinges of the oven. The hinges currently used on the oven have the following disadvantages: First, the structure of the oven door hinge is relatively complicated, the cost is high, and the accessories are installed separately, resulting in cumbersome installation or maintenance. . Second, it is easy to generate noise during the opening and closing of the oven door. Third, after the door is opened, most of the pull arms of the hinge are exposed at the connection between the box door and the oven, which affects the appearance of the oven. Fourth, there is a large gap between the pull arm and the oven door. If the user's fingers accidentally extend into this area, it is very easy to cause safety accidents such as pinching the user's fingers. Therefore, it is necessary to further improve the existing oven structure , to enhance its security.

Utility model content

The purpose of the utility model is to overcome the shortcomings of the prior art and provide a pull-down oven door hinge with simple structure, safe and convenient use, low production cost, novel and universal structural method.

The purpose of this utility model is achieved in the following manner: a pull-down door hinge for an oven, characterized in that it includes a base plate fixedly connected to the box body and a guide groove plate arranged on the base plate, the guide groove plate is provided with a guide The slot also includes the pull arm whose front end is movable hinged with the box door. Rollers are installed at the rear end of the pull arm to slide back and forth along the guide groove. A tension spring is also arranged between the rear end of the pull arm and the base plate, and the tension spring generates a constant tension. Pull the arm backwards to keep the oven door closed.

The front end of the pull arm is provided with a hook, which can be quickly hooked and installed with the hinge shaft fixed on the box door.

The front end of the pull arm is provided with a hinge hole, which is installed with the hinge shaft fixed on the box door.

The roller is installed on the limiter, and the fixed rivet passes through the installation hole on the limiter and is fixedly connected with the pull arm.

The limiter includes a connecting shaft installed in the mounting hole of the roller and a limiting boss arranged at the end of the connecting shaft. The diameter of the limiting boss is larger than the diameter of the connecting shaft. Roller limit.

The guide groove is in an inverted "L" shape with a high middle and low ends.

The base plate and the guide groove plate are made by punching and bending a plate integrally.

The pull arm is crescent-shaped.

The base plate is provided with several buckle holes for installing extension springs, and the relative distance between each buckle hole and the pull arm is different.

The beneficial effects of the utility model are: 1. The utility model has the advantages of simple structure, convenient assembly, low production cost and strong market competitiveness. 2. The pull arm in this case is set in a crescent shape, so when the door is opened, the pull arm extends downward in an arc shape, avoiding a gap between the bottom and the door, while making its appearance more beautiful, avoiding both The gaps between them are likely to cause safety accidents such as pinching users. 3. The guide groove is set in an inverted "L" shape, which can generate a self-locking force after the door is closed, so as to avoid inward heat leakage and low thermal efficiency of the oven. 4. The hinge has been assembled as a whole at the factory, which greatly shortens the installation process for users. 5. The utility model can also choose to use a single-side hinge and the other-side hinge shaft structure according to different models, and can also use double-sided hinges and other structures on heavy-duty oven doors, highlighting the advantages of its versatility.

Description of drawings

Fig. 1, 2 are the utility model and box door assembly use effect drawing.

Fig. 3, 4 are the renderings of the general assembly of the hinge structure of the utility model.

5 and 6 are structural assembly diagrams of the first embodiment of the hinge of the present invention.

Fig. 7 is a structural assembly diagram of the second embodiment of the hinge of the present invention.

Fig. 8 is a schematic diagram of the hinge structure installed on one side of the box door in the utility model.

Fig. 9 is a schematic diagram of the structure of hinges installed on both sides of the box door in the utility model.

Fig. 10 is an enlarged view of the structure of part A of Fig. 9 in the present invention.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is specifically further described. A pull-down door hinge for an oven, characterized in that it includes a base plate 1 fixedly connected to the box body and a guide groove plate 2 arranged on the base plate 1, the guide groove plate 2 is provided with a guide groove 3, and also includes a front end and a The pull arm 4 of box door 5 movable hinges, the rear end of pull arm 4 is equipped with roller 6 and can slide back and forth along guide groove 3, also is provided with extension spring 7 between the rear end of pull arm 4 and base plate 1, extension spring 7 Generate pulling force and drag the pull arm 4 backward all the time so that the oven door is always in the closed state.

The front end of the pull arm 4 is provided with a hook 41, which can be quickly hooked and installed with the hinge shaft 8 fixed on the box door 5.

The front end of the pull arm 4 is provided with a hinge hole 42, which is installed with the hinge shaft 8 fixed on the box door 5.

The roller 6 is installed on the limiter 9 , and the fixed rivet 10 passes through the installation hole on the limiter 9 and is fixedly connected with the pull arm 4 .

The stopper 9 includes a connecting shaft 91 installed in the mounting hole of the roller 6 and a limiting boss 92 arranged at the end of the connecting shaft. The diameter of the limiting boss 92 is greater than the diameter of the connecting shaft 91. The cooperation of 92 and pull arm 4 limits the position of roller 6.

The guide groove 3 is in an inverted "L" shape with a high middle and low ends.

The base plate 1 and the guide channel plate 2 are made by punching and bending a plate integrally.

The pull arm 4 is crescent-shaped.

The base plate 1 is provided with several buckle holes 71 for installing the extension spring 7 , and the relative distance between each buckle hole 71 and the pull arm 4 is different.

Working principle: When the door is opened, the door pulls the pull arm outward, so that the roller on the pull arm slides along the guide groove, and the spring is stretched to provide power for the door to reset. Since the pull arm in this case is crescent-shaped, when the pull arm is fully opened, the top of the pull arm extends downward in an arc shape, filling the gap between the pull arm and the box door, thus avoiding the influence of the pull arm exposed to the outside in the traditional technology While being beautiful, it also avoids the disadvantages of easily pinching users due to the existing gaps.

In addition, when the box door in this case is opened and closed, the rollers on the pull arm need to slide in the guide groove, so as to act as a deceleration buffer when the box door is closed. In addition, the guide groove is set in a unique inverted "L" or "C" shape, which can have a certain self-locking ability when the door is completely closed, so as to avoid leakage of the door caused by the expansion of hot air inside the oven , thereby ensuring the thermal efficiency of the oven.

In addition, as shown in Figure 4, the front end of the pull arm in this case is provided with a hook 41, so the pull arm only needs to be pulled outward during installation, so that the hook and the hinge shaft can be hooked, and the entire assembly process is very fast and convenient. At the same time, the hinge in this case can be independently made into parts, and can be directly assembled with the oven in the later stage, thus avoiding the troublesome operation and cumbersome process caused by the installation of the traditional oven hinge as a part and the oven body.

As shown in Figure 8, when the oven is small in size and the door is light in weight, in order to save resources and reduce production costs, the hinge structure in this case can be installed on one side. Both are just installed on the left side of the box door or one side installed on the right side, and the other end adopts the connecting hinge shaft 72 to directly penetrate the box door and the box body for installation.

As shown in Figures 9 and 10, when the oven is large in size and the door is heavy, a double-sided hinge structure can be used, that is, the hinges are installed on the left and right sides of the door to ensure the supporting capacity of the door. Make the oven door work safely and stably.

As shown in 10, in order to expand the scope of application of the hinge so that it can be used in various weights and environments, in this case, a number of buckle holes 71 are provided on the base plate 1 for installing tension springs 7, and each buckle The relative distance between the hole 71 and the pull arm 4 is different. Therefore, when the user needs to adjust the closing speed of the oven door, mechanical properties such as elasticity, he only needs to install the extension spring 7 with the buckle holes at different distances to realize the effect of adjusting the spring force. Compared with the traditional technology, the structure in this case is simpler and more reliable, and the production cost is also lower. At the same time, it has a larger scope of application, making it more competitive in the market, so it can be widely used.

The basic principles and main features of the present utility model and the advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model.

Claims (9)

1. A pull-down door hinge for an oven, characterized in that it includes a base plate (1) fixedly connected to the box body and a guide plate (2) arranged on the base plate (1), the guide plate (2) It is provided with a guide groove (3), and also includes a draw arm (4) whose front end is articulated with the box door (5), and a roller (6) is installed at the rear end of the draw arm (4), which can slide forward and backward along the guide groove (3) A tension spring (7) is also arranged between the rear end of the pull arm (4) and the base plate (1), and the pull spring (7) generates tension to always drag the pull arm (4) backward so that the oven door is always closed. 2. A pull-down door hinge for an oven according to claim 1, characterized in that: the front end of the pull arm (4) is provided with a hook (41), which can be quickly connected to the hinge fixed on the door (5) Shaft (8) hanging buckle installation. 3. A pull-down door hinge for an oven according to claim 1, characterized in that: the front end of the pull arm (4) is provided with a hinge hole (42), which is connected with the hinge shaft fixed on the door (5) (8) INSTALLATION. 4. A pull-down oven door hinge according to claim 1, characterized in that: the roller (6) is installed on the limiter (9), and the fixed rivet (10) passes through the limiter (9) ) is fixedly connected with the pull arm (4). 5. A pull-down door hinge for an oven according to claim 4, characterized in that: the stopper (9) includes a connecting shaft (91) installed in the mounting hole of the roller (6) and a connecting shaft (91) The limit boss (92) at the shaft end, the diameter of the limit boss (92) is larger than the diameter of the connecting shaft (91), and the roller (6) is limited by the cooperation of the limit boss (92) and the pull arm (4). bit. 6. A pull-down door hinge for an oven according to claim 1, characterized in that: said guide groove (3) is in an inverted "L" shape with a high center and low ends. 7. A pull-down door hinge for an oven according to claim 1, characterized in that: the base plate (1) and the guide groove plate (2) are made by punching and bending a plate integrally. 8. A pull-down door hinge for an oven according to claim 1, characterized in that the pull arm (4) is crescent-shaped. 9. A pull-down door hinge for an oven according to claim 1, characterized in that: the base plate (1) is provided with several hook holes (71) for installing tension springs (7), each The relative distance between each buckle hole (71) and the pull arm (4) is different.