KR20240007337A - Apparatus for opening and closing door for furniture - Google Patents

Abstract

The device of this embodiment is a device for opening and closing a door that is opened and closed by rotating in close contact with the pipe in a prefabricated shelf including a plurality of pipes and a plurality of plates, comprising: a door coupling part coupled to the door; a lower link coupled to a second rotation axis formed at the bottom of the door coupling part; an upper link coupled to a first rotating shaft formed at the top of the door coupling portion; a body that enables sliding movement of the upper and lower links and is coupled to the inner surface of the plate; a lower body that forms the lower part of the body and has a bent shape to enable sliding movement while the lower link is accommodated; an upper guide hole formed in the body and consisting of a hole having a predetermined length that guides the upper link protrusion formed at the end of the upper link to slide while being inserted; and a rotation guide bar coupled to the upper link protrusion and rotated at a predetermined angle when the upper link moves.

Description

Door opening and closing device for furniture {Apparatus for opening and closing door for furniture}

The present invention relates to a door opening and closing device for furniture, and to a device that minimizes interference with frames or pipes constituting furniture and facilitates opening and closing of the door.

It is generally applied to doors that open and close by being joined by a hinge, such as hinged doors of furniture such as dressers, sinks, and closets used indoors or in the office. It is installed on the inside of the furniture to reduce noise generated during the door closing process. Since it can extend the lifespan of furniture by alleviating the impact of a door hitting it, it is being applied to many furniture.

In addition, for the convenience of users, the device is manufactured to have a structure in which the door is opened by the elastic force of the driving body by simply pressing the furniture door. A permanent magnet is installed inside the device installed inside the door, and a metal door is installed on the inside of the door. Sieves are installed and are attracted to each other by magnetic force to maintain and secure the door in its closed state.

However, when trying to open the door, the elasticity of the spring contained inside the actuator is weak or reduced, and the magnetic material installed inside the door is absorbed by the permanent magnet, preventing the door from opening completely and making the device somewhat larger in length and size. We are currently struggling with the problem of interfering with storage space.

However, as the need to improve the convenience of furniture users and the durability of furniture has emerged, research on this is being actively conducted.

Existing furniture door opening and closing devices are divided into devices that have a permanent magnet on the inside to simply fix the door closed, and devices that have a spring as well as a permanent magnet on the inside and enable one-touch opening by elastic force. The device is equipped with a permanent magnet. A device that simply fixes the door to close is easy to close and fix the door, but when opening, the user must apply more force than the magnetic force to open it, and compared to a device that has a spring inside and can be opened with one touch, user convenience is reduced. There are inconveniences in use.

(Patent Document 1) KR20-2016-0002999 A

The present invention provides a device that reduces wear and interference with other furniture parts, such as pipes or plates, when opening and closing the door when a door is mounted on various furniture products such as a shelf so that it can be opened and closed. I would like to make a suggestion.

The device of this embodiment is a device for opening and closing a door that is opened and closed by rotating in close contact with the pipe in a prefabricated shelf including a plurality of pipes and a plurality of plates, comprising: a door coupling part coupled to the door; a lower link coupled to a second rotation axis formed at the bottom of the door coupling part; an upper link coupled to a first rotation axis formed at the top of the door coupling portion; a body that allows sliding movement of the upper and lower links and is coupled to the inner surface of the plate; a lower body that forms the lower part of the body and has a bent shape to enable sliding movement while the lower link is accommodated; an upper guide hole formed in the body and consisting of a hole having a predetermined length that guides the upper link protrusion formed at the end of the upper link to slide while being inserted; and a rotation guide bar coupled to the upper link protrusion and rotated at a predetermined angle when the upper link moves.

In addition, the door coupling part has a cross-section of a "L" shape, the lower link is coupled to the second rotation axis while partially inserted inside the lower end of the door coupling part, and the upper link is connected to the upper part of the door coupling part. It is coupled to the first rotation shaft in a state partially inserted inside, and is configured to move the upper link or lower link when the door coupling portion rotates at a predetermined angle about the first rotation axis or the second rotation axis. It is characterized by

In addition, a link protrusion guide hole is formed in the rotation guide bar through which the upper link protrusion is inserted to enable movement in the vertical direction, and the lower part of the rotation guide bar is characterized by a first guide gear having a plurality of teeth. Do it as

And, it further includes a second guide gear engaged with the first guide gear and rotating in the opposite direction when the first guide gear rotates, wherein the second guide gear is fixed in a position by a rotation pin fixed to the body. It is configured to rotate while maintaining, and a lower link is disposed below the second guide gear to slide forward or backward according to the rotation of the second guide gear, and a portion of the upper surface of the lower link is disposed below the second guide gear. 2 The lower link tooth portion is composed of a plurality of teeth engaged with the guide gear.

And, it further includes a wire coupled to one end of the upper link, and the wire is bent by at least one wire guide portion and coupled to the elastic member.

A door opening and closing device according to another embodiment of the present invention is a device for opening and closing a door that is opened and closed by rotating in close contact with the pipe in a prefabricated shelf including a plurality of pipes and a plurality of plates. Door coupling part that is coupled; a lower link coupled to a second rotation axis formed at the bottom of the door coupling part; an upper link coupled to a first rotating shaft formed at the top of the door coupling portion; a body that enables sliding movement of the upper and lower links and is coupled to the inner surface of the plate; a lower body that forms the lower part of the body and has a bent shape to enable sliding movement while the lower link is accommodated; an upper guide hole formed in the body and consisting of a hole having a predetermined length that guides the upper link protrusion formed at the end of the upper link to slide while being inserted; a rotation guide bar coupled to the upper link protrusion and rotated at a predetermined angle when the upper link moves; As a means for providing a predetermined repulsive force when the door is closed, a first elastic part and a second elastic part for providing a predetermined repulsive force for movement of the upper link, and a predetermined repulsive force for movement of the lower link a third elastic portion to provide repulsive force; And a lower part of the rotation guide bar is made of a first guide gear with a plurality of teeth, and a second guide gear meshes with the first guide gear and rotates in the opposite direction when the first guide gear rotates. , one end of the first elastic part is coupled to the rotation guide bar and configured to provide a repulsive force for movement or rotation of the rotation guide bar, and one end of the second elastic part is disposed to be located in the upper guide hole, The end of the upper link is configured to contact when the link moves, and the third elastic portion is configured to provide a repulsive force by engaging when the second guide gear rotates.

The proposed device has the advantage of reducing interference or friction/wear between the door and shelf parts when opening and closing doors in various products such as prefabricated shelves, and allowing users to easily open and close the door.

1 is a view showing a prefabricated shelf configured with a door opening and closing device for furniture according to this embodiment.
2 to 4 are diagrams for explaining the operation of the door opening and closing device according to this embodiment.

The detailed description of the present invention described below refers to the accompanying drawings, which show by way of example specific embodiments in which the present invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the invention are different from one another but are not necessarily mutually exclusive. For example, specific shapes, structures and characteristics described herein with respect to one embodiment may be implemented in other embodiments without departing from the spirit and scope of the invention. Additionally, it should be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention.

1 is a view showing a prefabricated shelf configured with a door opening and closing device for furniture according to this embodiment.

Referring to Figure 1, in the case of a prefabricated shelf, the horizontal pipe 2 and the vertical pipe 1 form the frame of the shelf, and the outer shape is formed by the horizontal plate 21 and the vertical plate 11 of the shelf.

In addition, a door 10, that is, a door plate, is disposed throughout the horizontal pipe 2 and can be opened and closed by the user, and the door opening and closing device 100 according to this embodiment is provided with the vertical plate 11. It is mounted on the inside, and the door coupling part 120 (see FIG. 2) of the door opening and closing device 100 is coupled to the door 10.

If the door is opened and closed with the door 10 in contact with the pipe 2, interference of the door 10 by the pipe 2 and wear due to friction on the lower part of the door 10 or the pipe 2 may occur. Although this may occur, the door opening and closing device 100 of the embodiment allows opening and closing of the door 10 while maintaining a constant distance from the lower end of the door 10 to the pipe 2.

This will be explained in detail along with the drawings.

2 to 4 are diagrams for explaining the operation of the door opening and closing device according to this embodiment.

First, referring to FIG. 2, the configuration of the door opening and closing device 100 with the door 10 open will be described. A door combination having a cross-section of a "ㄷ" shape while being coupled to one side of the inner side of the plate of the door 10. Part 120, the lower link 130 coupled to the second rotation shaft 122 formed at the bottom of the door coupling portion 120, and the first rotation shaft 121 formed at the top of the door coupling portion 120. Includes an upper link 110.

The lower link 130 is coupled to the second rotation shaft 122 while partially inserted inside the lower part of the door engaging part 120, and the upper link 110 is also attached to the inner upper part of the door engaging part 120. It is coupled to the first rotation shaft 121 in a partially inserted state, and when the upper link 110 and the lower link 120 are moved, the door coupling portion 120 is connected to the first rotation shaft 121 or the second rotation shaft 121. It rotates at a predetermined angle around the rotation axis 122.

Meanwhile, it includes a body 101 that enables stable sliding movement of the upper link 110 and the lower link 120, and the body 101 is coupled to the inner surface of the vertical plate 11 of the lathe.

The body 101 has a rectangular shape, and the lower part of the body 101 has a lower body 102 bent in a “ㄷ” shape to enable sliding movement while the lower link 130 is accommodated. Includes.

In addition, the body 101 is formed with an upper guide hole 104 consisting of a hole having a predetermined size and length that guides the upper link protrusion 111 formed at the end of the upper link 110 to slide when inserted. do.

One end of the upper link 110 is coupled to the top of the door coupling part 120 by the first rotation axis 121, and the other end of the upper link 110 is connected to the body 101 by the upper link protrusion 111. ) is configured to be moved along the upper guide hole 104.

Meanwhile, the horizontal movement of the upper link protrusion 111 is achieved by the upper guide hole 104, and further includes a rotation guide bar 140 configured to rotate at a predetermined angle when the upper link protrusion 111 is horizontally moved. do.

The rotation guide bar 140 is formed with a link projection guide hole 141 through which the upper link projection 111 is inserted to enable movement in the vertical direction, and the lower part of the rotation guide bar 140 has a plurality of It consists of a first guide gear 142 formed with teeth.

Therefore, when the upper link protrusion 111 moves along the upper guide hole 104, the rotation guide bar 140 is also rotated at a predetermined angle clockwise or counterclockwise, and the rotation guide bar ( The first guide gear 142 constituting the lower part of 140 rotates clockwise or counterclockwise.

If the state shown in FIG. 2, that is, the user is in the process of lifting the door 10 to close the door 10 while the door 10 is open, the upper link protrusion 111 is the upper guide. It moves inside the shelf (toward the right in the drawing) along the hole 104, and the rotation guide bar 140 rotates/moves clockwise at a predetermined angle by moving the upper link protrusion 111 to the right. , the first guide gear 142 rotates clockwise at a predetermined angle.

A second guide gear 150 is meshed with the first guide gear 142 and rotates in the opposite direction when the first guide gear 142 rotates, and the second guide gear 150 is connected to the body. Only rotation occurs while maintaining the fixed position by the rotation pin fixed to (101).

In addition, a lower link 130 is disposed below the second guide gear 150 to slide forward or backward according to the rotation of the second guide gear 150, and for this purpose, the lower link 130 A lower link tooth portion 131 composed of a plurality of teeth engaged with the second guide gear 150 is formed on a portion of the upper surface.

In addition, in order to achieve more stable movement when the lower link 130 is slid by rotation of the first and second guide gears 142 and 150, at least one lower link is installed on the side of the lower link 130. A protrusion 132 is formed, and the lower link protrusion 132 is configured to move along the lower guide hole 103 formed on the side of the lower body 102.

Meanwhile, a wire 160 is coupled to the end of the upper link 110, that is, a portion adjacent to the upper link protrusion 111, and the wire 160 is bent by at least one wire guide portion 170. and is coupled to the elastic member 180.

The elastic member 180 provides a force to pull the wire 160 with a predetermined elastic force, and when the user closes the door 10, the upper link 110 moves along the upper guide hole 104. It can be moved more easily.

Although not shown, it is also possible to configure the upper link 110 to automatically move using a power means such as a motor. For example, a belt configured to contact the upper surface of the upper link 110, a motor that enables movement/rotation of the belt, and a sensor capable of receiving wireless signals from a smartphone or remote control are provided. In the case of configuration, when a user's request is input through a sensor, the motor is driven to move the belt, so that the upper link 110 moves the upper guide hole 104 forward or backward along with the movement of the belt. It can also be configured to move along.

As shown in FIG. 2, when the user wants to gradually close the door 10 while the door 10 is open, the upper link 110 gradually moves backward (inside the shelf), as described above. It moves, and at this time, the rotation guide bar 140 and the first guide gear 142 rotate clockwise at a predetermined angle.

In addition, as the first guide gear 142 rotates, the second guide gear 150 engaged therewith rotates counterclockwise, and the lower link tooth portion engaged with the second guide gear 150 (131) is also moved, and since the movement is made in the direction inside the shelf, that is, in the right direction in the drawing, the lower link 130 is also moved in the right direction, inside the shelf.

Due to this configuration and operation, when the door 10 is opened, a portion of the lower link 130 is positioned to protrude a predetermined length from the body 101, thereby maintaining a state in which there is no interference with the structure of the shelf pipe, etc. However, when the door is closed, the lower link 130 is fully inserted into the body 101, so there is no problem of the lower part of the door 10 protruding or not being completely closed.

Figure 5 is a diagram showing the configuration of a door opening and closing device according to another embodiment of the present invention.

In the case of FIG. 5, a plurality of elastic members are used to ensure that the door moves and closes smoothly when the user closes the door.

That is, referring to FIG. 5, in order to smoothly close the door by a predetermined repulsive force, a first elastic portion 201 is provided to provide a predetermined repulsive force to the movement (rearward movement) of the upper link 110. ) and a second elastic part 202, and a third elastic part 203 to provide a predetermined repulsive force for movement (rearward movement) of the lower link 130.

The first elastic part 201 serves to provide a predetermined repulsive force for movement or rotation of the rotation guide bar 140, and has a protruding shape so that one end of the first elastic part 201 is coupled. A rotation guide bar engaging protrusion 145 is formed on the rotation guide bar 140, and a first fixing protrusion 147 to which the other end of the first elastic portion 201 is coupled is formed on the surface of the body 101. .

In addition, the first elastic portion 201 is composed of a spring that is wound a predetermined number of times around the first guide gear rotation axis 146, which is the rotation axis of the first guide gear 142, so that the rotation guide bar 140 moves rearward. When moving or moving clockwise, backward movement or clockwise rotation is gradually achieved due to the repulsive force applied by the first elastic part 201.

In addition, the second elastic portion 202 is formed so that one end is coupled to at least one second fixing protrusion 171 and the other end is located in the upper guide hole 104, so that the upper link 110 is rearward. When moving, it comes into contact with the end side of the second elastic part 202, and the user must apply force to move the upper link 110 while overcoming the repulsive force generated by the second elastic part 202. , smooth movement to the rear becomes possible.

Meanwhile, the third elastic portion 203 provides a repulsive force against the rearward movement of the lower link 130, thereby achieving smooth movement when the lower link 130 is moved backward by the user's force to close the door. Let it be lost.

When the second guide gear 150 rotates, the catching protrusion 151 formed on the guide gear 150 is caught by the third elastic part 203, and the catching protrusion 151 is connected to the third elastic part 203. When a force is applied and rotated to release the locking part 203, the locking protrusion 151 rotates/moves and the second guide gear 150 rotates.

That is, the third elastic part 203 is a means for providing resistance to rotation when the second guide gear 150 rotates, and has one end located on the second guide gear 150 and at least one other end. It is coupled to the above third fractured protrusion (181).

Therefore, in order for the locking protrusion in the first position to move to the second position when the second guide gear 150 rotates (clockwise rotation), the third elastic member disposed between the first position and the second position Force must be applied to overcome the jam caused by one end of section 203. If the locking protrusion at the first position is 151a and the locking protrusion at the second position is 151, in order for the locking protrusion to move/rotate from the first position to the second position, it must be attached to one end of the third elastic portion 203. When the door is closed enough to overcome the jam, it overcomes the jam and moves to the second position, thereby achieving smooth closing of the door.

The door closing buffering means of these other embodiments may be used in place of the wire 160, the outer guide portion 170, and the elastic member 180 in the embodiment of FIGS. 1 to 4 described above. Depending on this, it may also be used with such wires, wire guides, and elastic members.

In the above, the present invention has been described with specific details such as specific components and limited embodiments and drawings, but this is only provided to facilitate a more general understanding of the present invention, and the present invention is not limited to the above embodiments. , a person skilled in the art to which the present invention pertains can make various modifications and variations from this description.

Therefore, the spirit of the present invention should not be limited to the above-described embodiments, and the scope of the patent claims described below as well as all modifications equivalent to or equivalent to the scope of the claims fall within the scope of the spirit of the present invention. They will say they do it.

Claims (5)

In a prefabricated shelf including a plurality of pipes and a plurality of plates, a device for opening and closing a door that is opened and closed by rotating in close contact with the pipe, comprising:
A door coupling part coupled to the door;
a lower link coupled to a second rotation axis formed at the bottom of the door coupling portion;
an upper link coupled to a first rotation axis formed at the top of the door coupling portion;
a body that allows sliding movement of the upper and lower links and is coupled to the inner surface of the plate;
a lower body that forms the lower part of the body and has a bent shape to enable sliding movement while the lower link is accommodated;
an upper guide hole formed in the body and consisting of a hole having a predetermined length that guides the upper link protrusion formed at the end of the upper link to slide while being inserted; and
A door opening and closing device for furniture comprising; a rotation guide bar coupled to the upper link protrusion and rotated at a predetermined angle when the upper link moves. According to claim 1,
The door coupling portion has a “L” shaped cross section,
The lower link is coupled to the second rotation axis while partially inserted inside the lower end of the door coupling part,
The upper link is coupled to the first rotation axis while partially inserted inside the upper part of the door coupling part,
A door opening and closing device for furniture, wherein when the door coupling part is rotated at a predetermined angle about the first or second rotation axis, the upper link or the lower link is moved. According to claim 2,
A link protrusion guide hole is formed in the rotation guide bar into which the upper link protrusion is inserted to enable movement in the vertical direction,
A door opening and closing device for furniture, characterized in that the lower part of the rotating guide bar is made of a first guide gear formed with a plurality of teeth. According to claim 3,
It further includes a second guide gear engaged with the first guide gear and rotating in the opposite direction when the first guide gear rotates,
The second guide gear is configured to rotate while maintaining a fixed position by a rotation pin fixed to the body,
A lower link is disposed below the second guide gear to slide forward or backward according to the rotation of the second guide gear,
A lower link tooth portion composed of a plurality of teeth engaged with the second guide gear is formed on a portion of the upper surface of the lower link,
Further comprising a wire coupled to one end of the upper link,
A door opening and closing device for furniture, wherein the wire is bent by at least one wire guide and coupled to an elastic member. In a prefabricated shelf including a plurality of pipes and a plurality of plates, a device for opening and closing a door that is opened and closed by rotating in close contact with the pipe, comprising:
A door coupling part coupled to the door;
a lower link coupled to a second rotation axis formed at the bottom of the door coupling portion;
an upper link coupled to a first rotation axis formed at the top of the door coupling portion;
a body that allows sliding movement of the upper and lower links and is coupled to the inner surface of the plate;
a lower body that forms the lower part of the body and has a bent shape to enable sliding movement while the lower link is accommodated;
an upper guide hole formed in the body and consisting of a hole having a predetermined length that guides the upper link protrusion formed at the end of the upper link to slide while being inserted;
a rotation guide bar coupled to the upper link protrusion and rotated at a predetermined angle when the upper link moves;
As a means for providing a predetermined repulsive force when the door is closed, a first elastic part and a second elastic part for providing a predetermined repulsive force for movement of the upper link, and a predetermined repulsive force for movement of the lower link a third elastic portion to provide repulsive force; and
The lower part of the rotation guide bar includes a first guide gear having a plurality of teeth, and a second guide gear that engages with the first guide gear and rotates in the opposite direction when the first guide gear rotates,
One end of the first elastic portion is coupled to the rotation guide bar and is configured to provide a repulsive force for movement or rotation of the rotation guide bar,
One end of the second elastic portion is arranged to be located in the upper guide hole, so that the end of the upper link contacts when the upper link moves,
The door opening and closing device for furniture, wherein the third elastic portion is configured to provide a repulsive force by engaging when the second guide gear rotates.

Images