KR102395890B1 - Installation structure of detachable decoration plate for elevator door - Google Patents

Abstract

The present invention relates to an elevator door panel having a detachable decorative plate installed thereon. According to the present invention, the installation structure comprises: at least two locking protrusions (50) having heads (54) formed at end parts of a neck part (53) mounted on the upper rear surface of an elevator door panel body (10) and protruding forward; and an asymmetrical through-hole (60) formed on a portion of a decorative plate (20) corresponding to the head (54) of the locking protrusion (50) and including a small-diameter part (62) extending in the horizontal direction from a large-diameter part (61) of the size into which the head (54) of the locking protrusion (50) is inserted and at least corresponding to the size of the outer diameter of the neck part (53). When the head (53) of the locking protrusion (50) is inserted through the large-diameter part (61) of the asymmetric through-hole (60), the upper part of the decorative plate (20) is fixed to a door panel body (10) while the neck part (53) of the locking protrusion (50) comes in close contact with the door panel body (10). Accordingly, when the decorative plate is damaged or needs for replacement arise during use of an elevator, the existing decorative plate can be easily removed while only a support frame of a part of corners is separated in a state in which the door panel body left as it is, thereby providing an advantage of easily replacing the existing decorative plate with a new decorative plate.

Description

Removable decorative plate installation structure of elevator door

The present invention relates to an elevator door, and more particularly, to a detachable decorative plate installation structure for an elevator door in which the decorative plate as a separate member is detachably fixed to the surface of the elevator door panel for passengers in a building.

Elevators for the purpose of hoisting and transporting passengers inside a building are a car in which the floor and ceiling and wall panels surrounding the four sides are assembled together to form an internal boarding space, and is provided in front of the car hoisting path on each floor of the building. It consists of a door which opens and closes in conjunction with the door of the car so that boarding and disembarking into the car is made.

As the elevator door, especially the front of the door exposed to the outside, acts as an important factor influencing the quality of the interior or building together with the built-in wall surrounding it, it is made of stainless material rather than a shapeless simple iron panel itself. Corrosion patterns are formed on the surface or printed layers of various colors and patterns are formed on the front surface of the door panel, and are formed into various decorative surfaces, such as coated with glossy transparent resin.

On the other hand, as a recent trend related to the decorative surface of the elevator door panel, transparent glass is added to the front of the door panel to give the texture of the glass itself and the decorative surface of the door panel that is reflected through the glass. technology is being tried.

As an example of a technology for adding a glass plate to the front of the door panel, Patent Registration No. 10-1027873 discloses that the edge of the glass plate and the door body is coated with a transparent glass plate on the outer surface of the elevator door with an elastic back sheet interposed therebetween. Accordingly, the glass plate is fixed by fastening fasteners such as screws or bolts in a state where the support frame is added.

On the other hand, in the case of the above invention, it is expected to serve as a protective layer for the inner decorative panel surface by blocking surface scratches caused by direct contact applied from the outside, but there is a risk of damage to the door during use due to the property of the glass plate weak to impact There are disadvantages and limitations in that the door itself needs to be replaced when the door decoration is to be replaced.

Accordingly, in 'Elevator door protection panel fixing structure and method' of Registered Patent No. 10-1619947, previously registered by the present applicant, a decorative plate made of synthetic resin or metal with various patterns or patterns printed or engraved on the front side of the door panel is fixed. By using a frame and a fixing member to be detachably fixed to the front surface of the door panel, the problem of the glass plate fixing method can be solved.

However, although the above patent has several advantages as mentioned above, the front decorative plate is fixed to the door body under the structure of fastening the support frame and the fastening member over the entire corner area of the square door panel, or the plate body is fixed through the reverse process There is a problem that the work of separating the door panel is cumbersome and requires a considerable amount of work time, so the development of a door panel decoration plate installation structure of a new structure with a solution is required.

Korean Patent Registration No. 10-1027873 Korean Patent Registration No. 10-1619947

The present invention was devised in consideration of the various problems and disadvantages raised in the conventional elevator door panel. In particular, the decorative plate provided with the decorative surface on the front side of the door panel body having a shapeless surface can be detachably fixed. The purpose of this is to provide a removable decorative plate installation structure for elevator doors that allows the elevator to be operated without a decorative plate when necessary, while in use, only the decorative plate is removed from the door panel body and replaced with a decorative plate with a new decorative surface. there is.

Another object of the present invention is to extend through from the rear surface of the upper corner of the elevator door panel body and protrude forward so that the upper part of the decorative plate is supported through a locking protrusion having a disk-shaped head formed at the extended end thereof, so that at all four corners of the door panel body. An object of the present invention is to provide a removable decorative plate installation structure of an elevator door so that the decorative plate can be installed or removed simply and quickly without installing a support frame or removing the support frame.

The above object and other objects of the present invention are at least two locking protrusions having heads formed at the ends of the neck parts that extend through the upper rear surface of the elevator door panel body and protrude to the front, and the heads of the locking protrusions are large in size into which the heads are inserted. An asymmetric through hole extending from the neck in the horizontal direction, which is smaller than the diameter of the head and has a small diameter corresponding to at least the outer diameter of the neck portion, is formed in the decorative plate, and the head of the locking protrusion is inserted through the large diameter portion of the asymmetric through hole. This is achieved through a structure in which the upper portion of the decorative plate is fixed to the door panel body while the small-diameter portion of the asymmetric through hole is in close contact with the neck portion of the locking protrusion by sliding of the decorative plate.

As described above, the decorative plate is completely fixed by fastening the fastener between the lower part of the decorative plate and the door panel body in a state in which the decorative plate is first caught through the locking protrusion of the door panel body and the asymmetric through hole of the decorative plate. The installation of the decorative plate on the door panel body is completed by sliding the support frame extruded into a predetermined cross-sectional shape along both sides and lower surface corners of the door panel body including

In this case, the structure disclosed in Patent No. 10-1619947 of the present applicant may be applied to the fixing structure on both sides and lower corners of the door panel using the support frame.

The locking protrusion is a form in which a neck portion in the form of a cylindrical post is integrally extended on a disk-shaped base, and a head portion having a larger diameter than the diameter of the neck portion is coupled to an outer end of the neck portion through a fixing pin, in which case the A spring is installed on the outer peripheral surface of the neck portion from the base. The outer end of the locking protrusion extends outward through the through hole formed in the door panel body, and the head is coupled to the protruding extension portion. It is located on the neck portion of the section between the back surface of the.

When the locking protrusion is in a state before the decorative plate is installed on the door panel body, the neck portion where the base and the spring are located around the through hole formed in the door panel body is located on the back side of the door panel body, and the head and part of the neck portion The bar is in a state that protrudes forward of the door panel body. At this time, since the diameter of the spring and the diameter of the head are larger than the size of the through hole formed in the door panel body, unless the head is separated from the neck part, it is coupled to the door panel body. be in a state

The head of the locking protrusion preferably has a disk shape, and in addition, the surface portion may be formed in a convex countersunk head, or may be configured in other shapes. However, it is preferable that the inner surface of the head connected to the neck is formed to be flat. In addition, the coupling of the neck portion and the head may be integrally coupled through a screw fastening method including fixing through insertion of a fixing pin or other known methods. It is preferable that two or more locking projections are formed on the upper edge side of the door panel at a distance from each other.

On the other hand, the asymmetric through hole formed in the portion corresponding to the position of the locking protrusion of the door panel body above the decorative plate is preferably such that the upper ends of the large-diameter portion and the small-diameter portion located at a distance from each other are in the same horizontal position. The connecting line connecting each lower end of the large-diameter portion and the small-diameter portion is inclined upward from the lower end of the large-diameter portion to the lower end of the small-diameter portion. At this time, the connecting line between the large-diameter portion and the small-diameter portion may be formed in a straight line or a curved line, provided that the diameter of the neck portion of the locking protrusion is larger than the diameter of the neck portion in any section between the large-diameter portion and the small-diameter portion.

The decorative plate is preferably a so-called high-gloss decorative plate in which a printing layer and a protective coating layer having various patterns and colors are laminated on the surface of a metal plate body (steel plate) having a thickness of about 1 mm and finally glossy finish, and other surface treatment Other decorative plates having a decorative surface provided by technique or painting method may also be included.

Compared to the conventional elevator door, a pattern or shape is applied to the front surface of the panel body to form a decorative surface, whereas the door panel according to the present invention is made of a shapeless steel plate that is not subjected to any decorative treatment on the front of the door panel body. The decorative plate as a separate member having a decorative layer on the surface of the shapeless door panel main body is detachably installed, that is, replaceable.

The surface of the elevator door panel main body of the present invention is composed of only a base panel that is not subjected to a separate surface decoration treatment, and is configured so that a relatively expensive decorative plate can be simply added or separated thereon, so that construction materials using the elevator Scratches on the decorative plate by installing the decorative plate on the surface of the base panel after building construction or move-in is completed, so that the decorative plate is not installed, i.e., the base panel is exposed until the time of completion of the transport or moving in. There is an advantage in that the risk of financial loss due to occurrence or surface damage can be excluded in advance.

In addition, the present invention provides a new decorative plate by easily removing the existing decorative plate in a state where only the supporting frames at some corners are separated while the door panel body is left intact when the decorative plate is damaged during use of the elevator or the need for replacement arises. It has the advantage that it can be replaced with

1 is an exploded perspective view of a door panel according to an embodiment of the present invention;
2 is a perspective view of a door panel according to an embodiment of the present invention;
Fig. 3 is a cross-sectional view taken along line AA of Fig. 2;
Figures 4a and 4b is a partial cut-out front view of the head portion of the locking protrusion in a straight state and an inclined state according to an embodiment of the present invention.
5A to 5D show a coupling process between a locking protrusion and a door panel body and a decorative plate according to an embodiment of the present invention;
Figure 5a is a state before the coupling of the three members,
Figure 5b is a state in which the locking projection is coupled to the panel body,
Figure 5c is a state in which the head of the locking protrusion is located in the asymmetrical through-hole large-diameter portion of the decorative plate,
Figure 5d is a state in which the head of the locking protrusion is located in the asymmetrical small-diameter portion of the decorative plate.

The technical purpose of the removable decorative plate installation structure of the elevator door of the present invention and the separation or assembly process between the members including the overall structure will be clearly understood through the following description with reference to the drawings showing the embodiment according to the present invention.

First, FIG. 1 is an exploded perspective view of a door panel according to an embodiment of the present invention, and FIG. 2 is a perspective view of a door panel according to an embodiment of the present invention.

As shown, the elevator door panel of the present invention includes a door panel body 10, a decorative plate 20 detachably mounted on the surface of the door panel body 10, and both sides and lower portions of the door panel body 10. and side and lower support frames 30 , 30 ′ and 40 which are fastened to and surround both sides and lower corners of the door panel body 10 and the decorative plate 20 together.

The door panel body 10 is formed by bending a predetermined width of the four corners of a thin long rectangular metal plate made of steel in the same direction to have the bent side and upper and lower widths, and the surface is not subjected to a separate decorative treatment. do not lose

Next, the decorative plate 20 is, for example, a metal plate body having a thickness of 1 mm cut to have the same size as the front surface of the door panel body 10 to form a decorative layer on the surface. is formed with a printed layer for various patterns or shapes, and multi-coated high-gloss or corrosion patterns of various protective layers for improving or strengthening the properties of the film on it. not limited In some cases, the material of the decorative plate 20 may be made of a material other than metal.

The primary process of installing or adding the decorative plate 20 to the door panel body 10 is the corresponding portion of the locking protrusion 50 mounted on the top of the door panel body 10 and the upper portion of the decorative plate 20 . The asymmetric through-hole 60 formed in the bar is made by being coupled to each other, and the specific configuration of the locking protrusion 50 and the asymmetric through-hole 60 and the installation and separation configuration of the decorative plate 20 through these configurations are shown in Fig. 3 and Referring to FIG. 4, the description is as follows.

3 is a cross-sectional view taken along the line A-A of FIG. 2, and FIGS. 4A and 4B are partial cut-out front views for a straight state and an inclined state of the locking protrusion head according to an embodiment of the present invention, and FIGS. 5A to 5D are the present invention shows the coupling process between the locking protrusion and the door panel body and the decorative plate according to an embodiment of the present invention. The head of the locking protrusion is located in the large-diameter asymmetrical through-hole portion of the decorative plate, and Fig. 5D is a state in which the head of the locking projection is located in the asymmetrical small-diameter portion of the decorative plate.

As shown in FIGS. 5 and 5A and 5B , the locking protrusion 50 closes the through hole 11 formed in the door panel body 10 before the decorative plate 20 is installed on the door panel body 10 . The neck part 53, in which the base 51 and the spring 52 are located at the center, is positioned on the rear surface of the door panel body 10, and a part of the head 54 and the neck part 53 is part of the door panel body 10. The bar is in a state protruding forward. At this time, since the diameter of the spring 52 and the diameter of the head 54 are larger than the size of the through hole 11 formed in the door panel body 10, the head 53 is inserted into the neck part. It is in a state coupled to the door panel body 10 unless separated from the door panel body 10 .

However, one problem raised in the above state is that the bottom surface of the head 54 is damaged by the compression spring 52 fitted to the outer circumferential surface of the neck part 53 between the base 51 and the door panel body 10 . Since the door panel main body 10 is in close contact with or close to the front surface, it becomes difficult to allow the head 54 to pass through the asymmetrical through hole 60 of the decorative plate 20 thereafter.

As a way to prevent this, as shown in FIGS. 4A and 4B , a coupling groove 53a having an inclined bottom surface 53b is formed on the neck portion 53 of the locking protrusion 50, and the head 54 A head boss 55 having an inclined end 55a having an inclined surface corresponding to the inclined bottom surface 53b is formed on the rear surface of the slanted bottom surface 53b, and the head boss 55 is inserted into the coupling groove 53a and rotates. The head 54 including the head boss 55 is configured to be rotatable by the coupling of the pin P. At this time, it is preferable that the rotation pin passing hole of the head boss 55 through which the rotation pin P passes is formed to be biased toward the head 54 rather than the inclined end 55a.

Through the locking protrusion 50 structure as described above, when the decorative plate 20 is in a state before the door panel body 10 is coupled to the door panel body 10, the head 54 is moved outward while overcoming the elastic force of the spring 52 as shown in FIG. 4B When the pulling force applied is removed after drawing it out and tilting it by a predetermined angle, the inclined end 55a of the head boss 55 is inclined while making surface contact with the front surface of the door panel body 10 around the through hole 11 . The state remains stationary as it is, and accordingly, the head 54 protrudes while maintaining a certain distance from the door panel body 10 while maintaining the inclination, and then the large diameter portion 61 of the decorative plate 20 It is in a state in which insertion can be made easily.

Meanwhile, in the present embodiment, the head 54 of the locking protrusion 50 has a disk shape. Since the head 54 is of a size that cannot pass through the through hole 11 of the door panel body 10, the head 40 is formed as a separate member from the neck portion 53 of the locking protrusion 50, so that these two The members are coupled to each other through the rotation pin (P) in a state located inside and outside the through hole (11), respectively. Two or more of the locking protrusions 50 are formed on the same horizontal position at a distance from each other on the upper edge side of the door panel body 10 .

Next, the asymmetric through-hole 60 into which the head 54 of the locking protrusion 50 is inserted is formed from one large-diameter portion 61 of a size allowing the passage of the head 54, as shown in FIGS. 5C and 5D. It extends in the horizontal direction and is smaller than the diameter of the head 54 and includes a small diameter portion 62 corresponding to at least the outer diameter of the neck portion 53 .

Accordingly, in the state in which the head 54 of the engaging hole 50 protrudes forward of the decorative plate 20 through the large-diameter portion 61 as in Fig. 5c, through horizontal movement of pushing or pulling the decorative plate, Figs. 4a and As in 5d, the head boss 55 and the neck part 53 form a straight line with the tilted head 54 and the horizontal rotation with the surface of the decorative plate 20, and the spring 52 transmitted from the rear. The head 54 moves toward the door panel body 10 due to the elastic force of the . As a result, the rear surface of the decorative plate 20 in contact with the rear surface of the head 54 also moves toward the door panel body 10 to strengthen the adhesion between the two members, so that the upper portion of the decorative plate 20 is placed on the door panel body 10 . It stays in close contact and is fixed.

At this time, in the process of the locking protrusion 50 in the asymmetric through hole 60 moving from the large-diameter portion 61 to the small-diameter portion 62 by sliding of the decorative plate 20, the decorative plate 20 itself moves slightly downward. do.

As described above, in a state in which the locking protrusion 50 of the door panel body 10 and the upper part of the decorative plate are locked through the asymmetric through-hole 60 of the decorative plate 20, the fastening screw (S) is fastened to the lower part of the decorative plate. The lower part of the decorative plate is also fixed to the door panel body 10 in a close contact state.

Next, after inserting the fixing members (F) in each of the both corners and the lower part of the door panel body 10 in a state in which the decorative plate 20 is fixed and rotating it by 90°, the upper portions of these fixing members F are each support frame By sliding the support frame to fit into the guide grooves (G) of (30, 30', 40), as shown in FIG. 2, the installation of the decorative plate is completed as an elevator door. The right edge support frame 30' includes a support frame body 30'a directly coupled to the door panel body 10 and a cover frame 30'b attached to the support frame body. At this time, the asymmetrical through hole 60 and the head 54 of the locking protrusion 50 at the top of the decorative plate 20 are covered by the upper wall where the elevator door is located, so that they are not exposed to the outside.

Unexplained reference numeral 70 in the drawing is a cushion layer made of a stretchable material that is interposed between the door panel body 10 and the decorative plate 20 to prevent lifting of the decorative plate and improve adhesion.

In this state, the process of separating the decorative plate 20 from the door panel body 10 for replacement with a new decorative plate is as follows.

First, the left side support frame 30 and the lower support frame 40 are slid and separated from the door panel shown in FIG. 2 . Then, the fastening screw (S) exposed by the removal of the lower support frame (40) is rotated in the release direction to separate it.

Next, by sliding the decorative plate 20 to the left, or pulling it to the left, the decorative plate 20 is moved in a state where the head 54 of the locking protrusion 50 moves so that the asymmetrical through hole 60 coincides with the large diameter part 61. When moving in a direction away from the door panel body 10 , the decorative plate 20 is separated from the door panel body 10 .

Meanwhile, the installation of the new decorative plate on the door panel body is performed in the reverse order of the separation process of the decorative plate.

10. Door panel body 11. Through hole
20. decorative board 21. decorative layer
30, 30', 40. Support frame
50. Locking projection 51. Base
52. Spring 53. Neck
53a. coupling groove 53b. inclined bottom
54. Head 55. Head Boss
55a. Inclined end 60. Asymmetrical aperture
61. Large-diameter department 62. Small-diameter department
S. Fastening screw P. Rotating pin
F. Fixing member

Claims (6)

At least two locking protrusions 50 mounted on the upper rear surface of the elevator door panel body 10 and having a head 54 formed at the end of the neck 53 protruding to the front, and the head of the locking protrusion 50 ( 53) is formed on the decorative plate 20 of the corresponding portion and extends in the horizontal direction from the large-diameter portion 61 of the size into which the head 54 of the locking protrusion 50 is inserted, and is larger than the diameter of the head 54 There is provided an asymmetric through-hole 60 including a small-diameter portion 62 corresponding to at least the outer diameter size of the neck portion 53, and through the large-diameter portion 61 of the asymmetric through-hole 60, the locking protrusion 50 ) of the decorative plate in a state in which the small-diameter portion 62 of the asymmetric through-hole 60 is in close contact with the neck portion 53 of the locking protrusion 50 by sliding of the decorative plate 30 in a state in which the head 53 is inserted therethrough. The upper part of the 20 is fixed to the door panel body 10, and at this time, a spring 52 is attached to the outer periphery of the neck part 53 between the base 51 of the locking protrusion 50 and the rear surface of the door panel body 10. is installed,
A coupling groove 53a having an inclined bottom surface 53b is formed on an upper portion of the neck portion 53 of the locking protrusion 50 , and an inclined surface corresponding to the inclined bottom surface 53b is formed on the rear surface of the head 54 . A head boss 55 having an inclined end 55a having a Removable decorative plate installation structure for elevator doors, characterized in that the included head 54 is configured to be rotatable with respect to the neck portion 53. According to claim 1, wherein the locking projection (10) is the head 54 of the locking projection (50) is formed as a separate member from the neck portion (53) of the locking projection (50) is coupled by a fixing pin (P) Removable decorative plate installation structure of elevator doors, characterized in that delete delete [2] The structure of claim 1, wherein the decorative plate (20) is made of a metal plate, and a decorative layer (21) is formed on the upper surface of the elevator door. According to claim 1, wherein the locking projection (50) and the asymmetrical through hole (60) the upper portion of the decorative plate (20) and the door panel main body (10) both sides and lower portions of the support frames (30, 30', respectively), 40) is a removable decorative plate installation structure of the elevator door, characterized in that it is mounted.

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