KR20220001936U - structure of roller for sliding door - Google Patents

Abstract

The present invention relates to a sliding door door car that allows the sliding door to be installed simply and quickly and accurately without interference with the door frame with a single pressing operation.
In the disclosed design, the front and upper surfaces have openings that are open in the horizontal and vertical directions, and a pair of button fastening holes are formed at regular intervals on the lower outer surface, so that they are parallel to the upper and lower positions of the sliding door without protrusion. The outer housing is closely accommodated, the elastic member is received perpendicularly to the bottom surface of the outer housing to give elasticity, and the roller is coupled by the shaft through the shaft hole formed in the upper part, and the roller is interlocked with the roller by the elastic member of the outer housing The inner housing that moves vertically along the opening of the housing, the housing cover that is fastened to the upper part of the sliding door by shielding the open front of the outer housing, and the inner housing by a seesaw action by being forced into the outer housing through the housing cover and a push button for controlling the height of the roller by suppressing or releasing the vertical movement of the .
With such a configuration, there is an advantage that the door can be installed with a sufficient space between the door frame and the door frame with one pressing operation without a separate tool when installing the door on the furniture body.

Description

Door car for sliding door {structure of roller for sliding door}

The present invention is a sliding door that is installed in a sliding door such as a wardrobe or a built-in wardrobe, such as a wardrobe or a quilt cabinet, so that the sliding movement is performed smoothly along the rail of the door frame when the door is opened and closed, so that the door opens and closes smoothly without noise. It relates to a door door car, and more specifically, when assembling and installing a door in a furniture body such as a built-in wardrobe, it is possible to ensure a sufficient space between the door frame and the door frame with a single pressing operation, so that it can be installed quickly and easily without time delay. It relates to a door car for sliding doors that minimizes the gap between the rail of the door frame and the roller with one push operation.

In general, in wardrobes or built-in wardrobes, such as wardrobes or quilt cabinets, sliding doors are widely used for smooth opening and closing operation while minimizing the opening and closing installation space of the doors compared to the case type.

In order to facilitate sliding opening and closing operation on rails installed on door frames such as wardrobes and built-in cabinets, a door door is installed in such a sliding door. The main is composed of a combination of a housing and a fixing means that allows it to be fixed to the door, and the rollers of the car installed on the upper and lower parts of the door slide smoothly on the rails installed on the door frame so that the sliding door can be easily opened and closed. will do it

However, in order for the roller to slide smoothly without separating from the rail installed on the door frame during the opening and closing process of the door, the rail must be accurately maintained and the height of the roller installed on the door must be properly positioned. Only then, the upper and lower surfaces of the door do not cause friction with the door frame or create a gap in the upper part of the door.

However, when installing the sliding door on the furniture body, it is very difficult to accurately install the roller in the proper position on the sliding door, and foreign substances are deposited on the rail during use, or external shock, etc. Therefore, when the horizontal state of the rail, that is, when the height of the rail changes, severe friction is generated between the roller and the rail, which causes noise. is difficult, and in particular, there is a problem in that the door is separated from the rail due to the occurrence of a gap in the upper part of the door.

Recently, in order to prevent separation of the sliding door as described above and to prevent friction with the door frame, the height of the roller installed on the door is adjusted to allow the door to slide smoothly on the rail to open and close. It has been proposed and implemented in various forms.

As an example of such a conventional door car, the specification of Korean Utility Model Publication No. 20-2016-0001745 (published on May 24, 2016) discloses a door car for sliding doors configured to easily adjust the height of the door.

In the disclosed prior art configuration, the gripping piece bent along the width direction at the upper end and protruding in the forward direction has support protrusions and gripping protrusions protruding from the center and both sides of the gripping piece, and is closely coupled to the upper end and lower end of the door. fixed plate; a moving plate in which a pressing piece and a holding rod protrude in all directions to face each other at a position spaced apart from the supporting protrusion and the holding protrusion of the fixed plate and closely coupled to the fixed plate so as to be able to move vertically and elastically with respect to the fixed plate; a bolt-type adjustment member fastened to rotate in the vertical direction along the support protrusion of the fixed plate and elastically in close contact with the pressing piece to elastically control the vertical and vertical movement of the moving plate; a coil spring-type elastic member coupled to the gripping protrusion of the fixed plate and the gripping rod of the movable plate to apply an elastic force to the movable plate to elastically and vertically move; and a roller that is rotatably coupled to the moving plate so that a part of the moving plate protrudes toward the upper end of the moving plate and is inserted into the upper and lower rails of the furniture body to slide and move.

According to this configuration, when the bolt-type adjusting member is rotated clockwise or counterclockwise using a driver in the installed state of the door, the screw portion of the adjusting member is vertically upward or vertically downward along the support protrusion of the fixing plate. The moving plate also moves vertically downwards or vertically upwards around the guide axis of the fixed plate by the vertical upward or vertical downward movement of the adjusting member, so that the roller coupled thereto is inserted into the rail of the door frame and the door of the door. It can be seen that the height is adjusted stably, and thereby the roller slides smoothly without being separated from the rail without the occurrence of a gap in the upper part of the door and friction with the door frame.

However, in the prior art, when assembling and installing a sliding door on a furniture body, the height of the roller is adjusted by rotating the screw parts of the adjusting members installed on both sides of the lower part of the sliding door to secure the installation distance between the rail of the door frame and the door. There is an advantage, but at this time, the height of the roller should be set as low as possible through the screw part of the adjusting member to secure the installation interval. Therefore, the gap between the rail and the roller has to be adjusted again, so there are a lot of inconveniences in adjusting the height of the door when installing and repairing the door, and the working time is considerably delayed.

In this case of the prior art, while recognizing the above-described problems, it is not possible to prepare specific countermeasures for them.

Therefore, the present invention has been devised under the background described above, and the object of the present invention is to ensure that the door can be installed with a sufficient space between the door frame and the door frame with one pressing operation without a separate tool when assembling and installing the door on the furniture body. After installation, it minimizes the gap between the rail of the door frame and the roller with a single pressing operation, so that installation and maintenance can be performed quickly and easily without additional tools and time delay during installation and maintenance. In this case, the sliding door door can simply suppress or release the vertical movement of the driven hook by the seesaw action of the driven hook and the push button that move vertically in interlocking with the roller by an elastic member to increase the height of the roller. This is achieved by providing an adjustable movable hook.

According to the sliding door door car according to the present invention for achieving the above object, the front and upper surfaces have a 'C' cross-sectional opening part opened in the horizontal and vertical directions, and the lower outer surface is spaced apart from each other. an outer housing in which a pair of button fastening holes are formed, and are tightly accommodated in parallel without protrusion in the upper and lower positions of the sliding door; an elastic member that is vertically accommodated on the bottom surface of the opening part and imparts an elastic force; an inner housing in which a roller is coupled by a shaft through a shaft hole formed in the upper portion and vertically moves up and down along an opening of the outer housing by interlocking with the roller by an elastic member of the outer housing; a housing cover having a button through hole that is fastened to the upper and lower positions of the sliding door by shielding the open front of the outer housing; and a push button that is forcibly fitted to the outer housing through the button through hole of the housing cover to suppress or release the vertical movement of the inner housing by a seesaw action to adjust the height of the roller.

The outer housing is characterized in that a pair of guide grooves along the vertical direction on the left and right sides of the opening part, and a receiving groove into which a part of the elastic member is fitted so as not to be separated from the center of the bottom surface is formed.

The inner housing is a rectangular enclosure type with one side open, and is formed to protrude outward along a vertical direction on the left and right outer surfaces, and is fitted so as to be vertically movable in the guide groove of the outer housing, and is perpendicular to the center of the bottom surface of the rectangular enclosure type It protrudes downward and includes a shaft rod fitted to the other end of the elastic member, and a driven hook that protrudes obliquely vertically upward from the front lower portion of the housing type to engage or disengage with the push button.

The push button is formed in a vertical upward direction on the upper part, with a fastening rod that protrudes in the rear direction at a certain distance from the rear and is forcibly fitted into the button fastening hole of the outer housing through the button through hole, and the fastening bar is the axis and a movable hook engaged with or disengaged from the driven hook by a seesaw action.

According to the door car for sliding door of the present invention, a driven hook is attached to the inner housing that moves vertically by an elastic member in the open part of the outer housing, and a movable hook is inserted into the outer housing to engage or release the driven hook. When the sliding door is assembled and installed on the furniture body, it is possible to secure sufficient space between the door frame and the door frame with one pressing operation without a separate tool. Since the gap between the roller and the door can be minimized, there is an effect that it can be installed on the furniture body quickly and easily without time delay when installing and repairing the door.

1 is an exemplary view showing a process of installing a door car on the upper and lower parts of a sliding door in which the present invention is implemented;
2 is an exemplary view showing a state in which the door car of FIG. 1 is installed on the upper and lower parts of the sliding door in which the present invention is implemented;
3 is an exploded perspective view showing an enlarged sliding door door car applied to FIGS. 1 and 2;
4 is a front view showing a state in which the sliding door door car of FIG. 3 is coupled;
5 is a cross-sectional view of the operating state showing a state in which the roller of the sliding door car of FIG. 3 is lowered by a pressing operation;
FIG. 6 is a cross-sectional view illustrating a state in which the roller of the sliding door car of FIG. 5 is seated on the rail of the upper door frame.

Hereinafter, a preferred embodiment of a sliding door door car according to the present invention will be described in detail with reference to the accompanying drawings.

Among the accompanying drawings, FIG. 1 is an exemplary view showing a process of installing a door car in the upper and lower parts of a sliding door in which the present invention is implemented, and FIG. 2 is the door in FIG. is an exemplary view showing the installed state, and FIG. 3 is an enlarged exploded perspective view of the sliding door car applied to FIGS. 1 and 2 .

As shown in FIGS. 1 to 3 , the door car 100 for a sliding door according to the present embodiment has a 'C'-shaped cross-sectional opening 12 in which the front and upper surfaces are largely opened in the horizontal and vertical directions. ) is formed and is vertically accommodated on the bottom surface of the opening part 12 and the outer housing 10, which is fitted and accommodated in parallel without protrusion in the recesses 110 formed on both upper and lower sides of the sliding door (D), and the elastic force An elastic member 60 for providing ), a housing cover 30 for fastening the outer housing 10 to the groove 110 of the sliding door D by shielding the open front of the outer housing 10, and a shaft on the upper portion of the inner housing 20 A roller 50 that is coupled through (25) and vertically moves up and down together with the inner housing 20, passes through the housing cover 30 and is coupled to the outer housing 10, and forward and backward seesaw movement by external pressing A push button 40 for controlling the height of the roller 50 by suppressing and releasing the vertical movement of the inner housing 20, and a fastening pin for fastening the outer housing 10 and the housing cover 30 by fitting (16) is included.

For reference, the non-explanatory reference numeral 120 in the drawing is a conventional door car, which is similar in appearance to the door 100 of the present invention. Therefore, the description of the present invention will be omitted below.

At this time, as shown in FIG. 3 , the outer housing 10 has a semi-circular arc shape and the opening 12 has a square cross-sectional shape with an open front and an upper surface. A pair of guide grooves 11 are formed on the left and right sides of the opening 12 in the vertical direction, and a part of the elastic member 60 made of a coil type is inserted in the center of the bottom surface so that there is no separation. The receiving groove 13 is formed by being dug to a predetermined depth. In addition, a pair of button fastening holes 14 and cover fastening holes 15 are formed on the same line at regular intervals on the lower outer surface, and another cover fastening hole ( 15) is formed.

On the other hand, the inner housing 20 is a rectangular enclosure shape with an open upper surface, and guide protrusions 21 protruding outward along the vertical direction are formed on the left and right outer surfaces of the outer housing 10, and guide grooves 11 of the outer housing 10 are formed. It is fitted so that it can move vertically.

In addition, in the center of the bottom surface of the square housing type, the shaft rod 26 protrudes vertically downward and is fitted to the other end of the elastic member 60, and on the lower front surface is obliquely projected vertically upward to prevent the vertical movement of the inner housing 20. A driven hook 22 that engages or disengages with the push button 40 is formed accordingly.

The housing cover 30 is formed to protrude outwardly to be coupled in a rectangular cross-sectional shape to enclose the front surface of the outer housing 10, and the convex portion has a button through hole 31 and a plurality of housings are fastened, respectively. A ball 32 is formed. Here, the housing fastening hole 32 corresponds to the cover fastening hole 15 of the outer housing 10 and is coupled by the fastening pin 16 .

In addition, door fastening holes 33 are formed in each corner of the housing cover 30 to be screwed to the sliding door D after being coupled by the outer housing 10 and the fastening pins 16 .

On the other hand, in the push button 40, a pair of fastening rods 41 are formed to protrude in the rear direction at a predetermined distance on the rear side, and the button fastening hole of the outer housing 10 through the button through hole 31 ( 14) is coupled to the press fit, and a movable hook 42 is formed in the upper part vertically upward. At this time, the movable hook 42 is engaged with or disengaged from the driven hook 22 of the inner housing 20 by a seesaw motion of the fastening rod 41 as an axis according to the pressing action or release of the push button 40 . is equal to

In this way, the inner housing 20 having the roller 50 in the outer housing 10 of the door car 100 is vertically movably coupled, and the housing cover 30 and the push button ( 40) as shown in FIG. 4, and then insert the outer housing 10 of the door car 100 into the grooves 110 formed on both upper sides of the door D as shown in FIGS. 1 and 2, and then By closely fixing the housing cover 30 using a fixing member such as a screw not shown in the drawing, the door car 100 for a sliding door according to the present invention is firmly installed on the door (D).

In this way, the door car 100 is installed on the door D, and the roller 50 of the inner housing 20 is shown in FIGS. 1 and 2 or 5 and 6, the upper door frame (P) By rolling in contact with the rail R of the door (D), the opening and closing operation of the door (D) is smoothly performed. In general, after seating the lower part of the door (D) on the rail (R) of the lower door frame (P), the upper part of the door (D) is inserted into the upper door frame (P). At this time, the door ( When inserting the upper part of D), most of the rollers 50 of the door car 100 are subjected to interference that is caught on the upper door frame (P).

Therefore, in the present invention, as shown in FIG. 6 , on the assumption that the roller 50 of the door car 10 protrudes out of the inner housing 20, the operator secures the installation distance between the door D and the upper door frame P When the roller 50 of the door car 100 is pressed vertically downward to As shown in Fig. 5 together with the roller 50, it is moved vertically downward. At this time, the coil-type elastic member 60 fitted into the receiving groove 13 of the outer housing 10 and the shaft rod 26 of the inner housing 20 is compressed by the vertical downward movement of the inner housing 20 .

As described above, when the inner housing 20 continues to move vertically downward and touch the bottom surface of the outer housing 10, the driven hook 22 protruding from the front surface of the inner housing 20 is the movable hook of the push button 40. (42), hook coupling is made as shown in Fig. 5, and even if the roller 50 pressed in this state is released, the driven hook 22 and the movable hook 42 are caught by the hooking of the door car 100. As shown in FIG. 5, a sufficient installation distance is maintained between the roller 50 and the rail R of the door frame P, so that the roller 50 does not get caught in the door frame P, so that the door D is easy to install and will be done quickly

And as described above, in the state in which the roller 50 of the door car 100 installed on the upper part of the door D and the rail R of the door frame P correspond to each other with a certain interval, as shown in FIG. 5 , the housing cover 30 ), when the lower end of the push button 40 coupled to the outer housing 10 by a pair of fastening rods 41 is pressed through the button through hole 31 of the movable hook 42, the pair of fastening rods (41) as the axis of the seesaw action, that is, while rotating outward, the engagement with the driven hook (22) is released.

As described above, when the engagement between the driven hook 22 and the movable hook 42 is released by pressing the push button 40, the coil-type elastic member 60 compressed in the outer housing 10 is momentarily elastic. As it is restored and pushes the inner housing 20 vertically upward with respect to the outer housing 10 as shown in FIG. 6, the roller 50 of the door car 100 abuts against the rail R of the upper door frame P Therefore, when the sliding door (D) is opened and closed, it naturally rolls along the rail (R).

As described above, the door car for sliding doors according to the present invention can be installed by ensuring sufficient spacing of the door to the door frame with one pressing operation without a separate tool when assembling and installing the door on the furniture body, and after installation, It is possible to minimize the gap between the rail of the door frame and the roller with a single pressing operation, so it has the advantage of being able to perform work quickly and easily without additional tools and time delay during installation and maintenance.

And, although specific embodiments of the present invention have been described and illustrated in the above, it is obvious that the present invention is likely to be implemented with various modifications by those skilled in the art.

Such modified embodiments should not be individually understood from the technical spirit or perspective of the present invention, and such modified embodiments should fall within the scope of the appended utility model registration claims of the present invention.

10: outer housing 11: guide groove
12: opening part 14: button fastening hole
15: cover fastening hole 16: fastening pin
20: inner housing 21: guide projection
22: driven hook 25: shaft
26: shaft rod 30: housing cover
40: push button 41: fastening rod
42: movable hook 50: roller
60: tin member 100: tea

Claims (3)

It has a 'C'-shaped cross-sectional opening with the front and top surfaces open in the horizontal and vertical directions, and a pair of guide grooves are formed on the left and right sides of the opening along the vertical direction, and the lower outer surface is spaced apart from each other at regular intervals. an outer housing having a pair of button fastening holes and a receiving groove formed in the center of the bottom surface of the opening part to be closely and closely accommodated in the upper and lower positions of the sliding door without protrusion;
an elastic member having one end vertically fitted so as not to be separated from the receiving groove formed on the bottom surface of the opening portion to provide an elastic force;
an inner housing in which a roller is coupled by a shaft through a shaft hole formed in the upper portion and vertically moves up and down along an opening of the outer housing by interlocking with the roller by an elastic member of the outer housing;
a housing cover having a button through hole which is fastened to the upper and lower positions of the sliding door by shielding the open front of the outer housing; and
A push button for controlling the height of the roller by suppressing or releasing the vertical movement of the inner housing by a seesaw action by being forcibly fitted to the outer housing through the button through hole of the housing cover. The method according to claim 1,
The inner housing is
a guide protrusion having an open upper surface, protruding outward along a vertical direction on left and right outer surfaces, and fitted to a guide groove of the outer housing so as to be vertically movable;
a shaft bar protruding vertically downward from the center of the bottom surface of the square housing type and fitted to the other end of the elastic member; and
and a driven hook that is obliquely protruded vertically upward from the front lower part of the enclosure type and is engaged with or disengaged from the push button. The method according to claim 1,
The push button is
a fastening rod protruding in the rear direction at a predetermined distance from the rear and forcibly fitted into the button fastening hole of the outer housing through the button through hole; and
and a movable hook formed vertically upward on the upper part and engaged with or released from the driven hook by a seesaw action on the fastening rod as an axis.

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