KR200307798Y1 - Hinge for door - Google Patents

Abstract

The present invention relates to a hinge for a door that is opened and closed by an up / down rotation door type, and a hinge using a conventional cam has a problem in that workability and productivity are considerably reduced due to a large number of parts and an assembly process.

Therefore, the present invention, in the hinge 220 is rotated in accordance with the opening and closing of the door by inserting the front end of the hinge shaft 130 protruding outward through the shaft hole 121 of the cover 120, The rear end portion of the hinge shaft 130 is formed as a cam portion 132, and the upper and lower portions of the case body 110, the cam portion rotatable receiving portion 111 and the spring receiving portion 112 to form a partition The center is formed so as to pass through the guide hole 113, the guide hole is installed in one end of the slider 140 in contact with the cam portion 132 to be elevated, and the other end of the slider 140 to the spring receiving portion 112 It is provided with a carbushing means 150 for contacting and pressing the slider 140 toward the cam part 132, the present invention is composed of only five parts of the case body, cover, hinge shaft, slider, the carburetor means fewer parts Good assemblability improves productivity. Maintaining the closed state of the door and maintaining the airtightness of the door without the limitation of the tooth space has a good effect.

Description

Hinge for door

The present invention relates to a hinge for a door that opens and closes by opening / closing rotation, and more specifically, the door hinge is composed of only five parts such as a case body, a cover, a hinge shaft, a slider, and a spring. The present invention relates to a hinge for a door, which can increase productivity by making it considerably less and easy to assemble, and also to maintain a good airtight force when the door is opened and closed.

Generally, doors for electronic appliances such as cupboard doors, kimchi refrigerators and washing machines of kitchen furniture are frequently used with opening / closing doors that open up and down while rotating around the hinge axis. The hinges for the sliding doors are mostly maintained by the coil spring tension when the door is completely opened using the tension of the coil spring installed on the hinge shaft.

However, since the hinge for the opening door is opened or closed only when the door is completely closed or fully open, the opening and closing angle of the door may not be maintained at a desired place, resulting in inconvenience in use, and when the installation space is sufficient, such as a hatchback car. A gas cylinder is used to freely open and close the door.

However, most of the doors for kitchen furniture, doors for electronic appliances such as kimchi refrigerators and washing machines cannot use gas cylinders due to limitations in installation location and appearance problems. Is mainly used, and developed as such a hinge is a "hinge mechanism and hinge unit" registered in the domestic patent No. 227866.

As shown in FIGS. 1A and 1B, the patented hinge includes first and second guide protrusions 14 formed on the outer circumferential surface of the main body and the cover while the cam surfaces 13 are formed to face each other so as to be engaged with each other. Two cam bodies 11 and 12; A pin shaft (20) through which the first and second cam bodies (11, 12) are rotatably inserted through the other end of the key groove (22) in a state where the flange (21) is formed at one end thereof; The second cam body 12 is pressed against the first cam body 11 while being supported by an E-ring 23 coupled to the key groove 22 after being fitted into the pin shaft 20 protruding from the second cam body 12. It is composed of a coil spring (30).

By the way, the hinge is assembled to the first cam body 11, the second cam body 12, the pin shaft 20, the E ring 23, the coil spring 30, etc. in addition to the main body and the cover (not shown in the figure) Due to the large number of parts and the difficult assembly, the assembly process takes a lot of time and time, so productivity is low. As mentioned above, it is monotonous to operate only when the cover is completely closed or fully open.

That is, when the hinge is used on a door that has a large load like the door of a Kimchi refrigerator, the hinge does not distribute the load of the door evenly to the hinge of the cover, so the door may not be balanced and the door feels heavy. In addition, since the cam surface is divided into only the valley portion 15b and the top portion 15a, when the door opening angle exceeds a predetermined angle, the door tends to open completely suddenly, and thus there is a risk of use in a large product such as a kimchi refrigerator. .

In addition, in view of the above, a hinge for applying to a sliding door that loads a lot like a home appliance such as a kimchi refrigerator is registered in Korean Utility Model Registration No. 249985, and the configuration of the utility model registered hinge is As shown in Figs. 2a and 2b.

The hinge is installed between the first and second fixing members 51 and 52 spaced apart from each other so that the hinge shaft 70 is rotatably inserted, and the hinge shaft 70 is movable horizontally to the slider 60. And an elastic spring 80 for supporting the slider 60, a protrusion 62 having a cam curved surface 61 opposed to the outer side of the slider 60, and a hinge formed at the cam curved surface 61. Both ends of the pin 71 penetrating the shaft 70 are in contact with each other, and the slider 60 is fitted to the guide shafts 53 provided on both sides of the hinge shaft 70 to move horizontally. .

However, in addition to the main body and the cover (not shown in the figure), the hinge also includes a slider 60 having a first and second fixing members 51 and 52, a hinge shaft 70, and a cam protrusion 62, and an elastic spring ( 80), the pin 71, the guide shaft 53 is made of more parts, as the assembly productivity is lower than the above draft can be said that there are many factors of the cost increase.

In addition, since the cam curved surface 61 is divided into the valley portion and the top portion only, the door tends to open completely suddenly when the opening angle of the door exceeds a predetermined angle. When applied to the product, there is a problem causing safety accidents because the risks of use, such as hitting the door against the wall, are always inherent.

In addition, the line design and the design is a structure in which the shaft, both cams and springs are arranged in a line, so that the full length of the case cover can be formed to be considerably long. There is a problem that the air tightness of the door falls.

The present invention was developed in order to solve the conventional problems as described above, the present invention is to reduce the number of parts constituting the hinge to a minimum, and to improve the assembly ability to improve the productivity, while the length is short and the volume is small installation space The object of the present invention is to provide a hinge for a door that is not particularly limited by the airtightness of the door.

Figure 1a, 1b is an exploded perspective view showing a conventional hinge structure and a perspective view of the assembled state

Figure 2a, 2b is an exploded perspective view and a perspective view of the assembled state showing another conventional hinge structure

Figure 3 is an exploded perspective view illustrating a hinge in which the present invention is implemented

4 is a perspective view illustrating an example of a state in which the hinge of the present invention is installed in a product;

Figures 5a, 5b, 5c is a cross-sectional view of the main portion showing the operating state of the present invention

Figure 6 is a main cross-sectional view showing another embodiment of the present invention

Explanation of symbols for main parts of the drawings

110: case body 111: accommodating part

112: spring receiving portion 113: guide ball

120: cover 121: shaft hole

130: hinge shaft 132: cam portion

133,134: first and second locking groove 140: slider

150: bullet shot means 151: groove portion

220: door

Hereinafter, described in detail by the accompanying drawings the technical configuration and operation of the preferred embodiment that can effectively achieve the above object of the present invention.

3 is an exploded perspective view illustrating a hinge of an embodiment in which the present invention is implemented, and FIG. 4 is a perspective view illustrating an example in which the hinge of the present invention is installed on both sides of a door of the product, and the case of the configuration of the present invention The tip 131 of the hinge shaft 130 installed in the main body 110 protrudes to the outside through the shaft hole 121 of the cover 120, and the tip 131 of the protruding hinge shaft 130 is the door 220. The hinge is inserted into the shaft hole (not shown in the drawing) so that the hinge shaft 130 is rotated as the door 220 is opened and closed.

The structural feature of the present invention is the rear end portion of the hinge shaft 130 is formed by the cam portion 132, the upper and lower inside of the case body 110, the cam portion 132 is a receiving portion 111 capable of rotating operation And forming a spring receiving portion 112, the center of which is connected to the guide hole 113, and the guide hole 113 is installed so that one end of the slider 140 is in contact with the cam portion 132. In addition, the spring receiving portion 112 is in contact with the other end of the slider 140 is characterized in that the elastic means 150 for pressing the slider 140 toward the cam portion 132 is provided.

At this time, a plurality of first and second locking grooves 133 and 134 are formed on one side of the outer circumferential surface of the cam part 132 to catch the tip of the slider 140 as the door 220 is opened and closed. It is also possible to form only two catching grooves 134. As the shot-carrying means 150, it is preferable to use leaf springs formed by overlapping a plurality of spring plates to maintain a honeycomb in the center, as shown in FIG. Coil springs can also be used, as in 6.

In the drawing, reference numeral 151 denotes a groove formed at both ends of the leaf spring-shaped carcass means 150, and 114 and 122 are inserted into and supported by the groove portion 151 of the carcass means 150. 110 and the protrusions formed on the cover 120, 210 is the body of the kimchi refrigerator illustrated as an example of a number of products that the hinge of the present invention is installed.

The present invention formed as described above is composed of only five parts of the case body 110, the cover 120, the hinge shaft 130, the slider 140, the carbushing means 150 in the configuration of the hinge in Figures 1a and 2a The number of parts is considerably smaller than that of the conventional hinge shown, and the hinge shaft 130, the slider 140, and the elastic means 150 in the upper / lower receiving portions 111 and 112 and the guide hole 114 of the case body 110. After assembling the cover 120, the assembly of the present invention is completed by simply assembling the cover 120, which can be said that assembly is fairly quick and simple.

When the door is opened at 90 degrees after installation in the product, the tip of the cam portion 132 of the hinge shaft 130 installed in the case body 110 is 90 degrees with the slider 140 as shown in FIG. 5A. The tip of the slider 140 is in contact with the first insertion groove. At this time, the elasticity of the leaf spring or the coil spring, which is the resilient means 150, acts weakly on the slider 140, but the door maintains a vertical line. The door's weight is balanced so that the door will not close on its own.

In this state, when the door is slowly closed, the tip of the cam portion 132 of the hinge shaft 130 rotates toward the slider 140 as the door is rotated, so that the first locking groove 133 is out of the tip of the slider 140 and the The next second locking groove 134 is caught in contact with the tip of the slider 140, as shown in Figure 5b, in this case, because the slider 140 is slightly lowered down to slightly compress the bullet means 150, the door There is a strong tension acts to maintain the closed state as it is about 45 degrees, the opening angle can be adjusted in various ways depending on the number of the engaging grooves (133, 134).

In addition, when the door is completely closed in the above state, the cam part 132 of the hinge shaft 130 which rotates together with the door comes into contact with the tip of the slider 140 while pushing the tip of the slider 140 to the maximum as shown in FIG. 5C. 140 is in a state in which the ball shooting means 150 is compressed as much as possible. Therefore, since the tension of the strong resilient means 150 is transmitted to the cam part 132 as it is to maintain the closed state of the door, the airtight force of the door is good.

In this invention, the operation direction of the cam unit 132 may be reversed according to the design change. That is, the tip of the cam 132 may be in contact with the tip of the slider 140 when the door is opened at 90 degrees, and the first catching groove 133 of the cam 132 may be in contact when the door is closed.

As described above, the present invention consists of only five parts of the case body, the cover, the hinge shaft, the slider, and the resilient means, so that the parts constituting the hinge have fewer parts and better assembly performance than before. have.

In addition, since the length of the hinge can be shortened, the installation space is not limited, and the door is opened and closed by the cam contact of the hinge shaft and the slider contacted by the slider and the repulsive force of the repulsive means. There is an effect of maintaining a good airtight force when closing the door while maintaining at various angles.

Claims (4)

The tip 131 of the hinge shaft 130 installed in the case body 110 protrudes to the outside through the shaft hole 121 of the cover 120, and the protruded tip 131 is inserted into the shaft hole of the door 220. In the hinge that the hinge shaft 130 is rotated in accordance with the opening and closing of the door 220, A rear end portion of the hinge shaft 130 is formed as a cam portion 132, and the upper and lower portions of the case body 110 include an accommodating portion 111 and a spring accommodating portion 112 in which the cam portion 132 is rotatable. The partition is formed, but the center thereof is formed to pass through the guide hole (113), and the guide hole (113) is provided with a slider (140) whose one end is in contact with the cam portion (132), and the spring receiving portion (112). ) Hinges for doors, which are provided in contact with the other end of the slider 140 to press the slider 140 toward the cam portion 132. The method of claim 1, On the outer circumferential surface of the cam portion 132 is formed one or more of the first, second locking grooves 133, 134 that the front end of the slider 140 is caught as the door 220 is closed. Hinge for the door. The method of claim 1, Door hinge, characterized in that installed in the spring spring with a plurality of spring plate is superimposed so that the center to maintain the honeycomb type. The method of claim 1, The hinge for the door, characterized in that a plurality of coil springs are used as the carcass means (150).