Siding panel with improved locking mechanism and method of manufacture

Abstract

One aspect of the disclosure is a siding panel having a front face, a rear face, a top edge, a bottom edge, a first side, and a second side, the top edge being folded over to create two layers of material. The siding panel further includes a first locking mechanism disposed on the front face adjacent the top edge configured to interlock with a second locking mechanism of a second siding panel, the first locking mechanism having a generally S-shaped portion. The siding panel also includes a second locking mechanism disposed on the rear face of the siding panel having a generally U-shaped portion including a curved section, and the second locking mechanism being configured to interlock with a first locking mechanism of a third siding panel. The first locking mechanism and the second locking mechanism facilitate both locking and unlocking of the siding panel from the third siding panel.

Claims

1. A siding panel comprising: a siding panel having a front face, a rear face, a top edge, a bottom edge, a first side, and a second side, the top edge being folded over to create two layers of material; a first locking mechanism disposed on the front face adjacent the top edge, the first locking mechanism having a generally S-shaped portion comprising a first substantially flat portion, a second curved channel portion, a third curved portion, and a fourth portion having an outwardly protruding lip; and a second locking mechanism disposed on the rear face of the siding panel, the second locking mechanism of the siding panel having a generally U-shaped portion including a curved section, and the second locking mechanism of the siding panel being configured to interlock with a first locking mechanism of a third siding panel; wherein when the first locking mechanism of the siding panel interlocks with a second locking mechanism of a second siding panel having the same configuration as the siding panel, the outwardly protruding lip of the first panel extends away from a bottom edge of the second siding panel toward a front face of the second siding panel.

2. The siding panel of claim 1, wherein the second locking mechanism of the siding panel includes an upwardly extending portion including the curved section, wherein the upwardly extending portion is configured to interlock with a second curved channel portion of the first locking mechanism of the third siding panel.

3. The siding panel of claim 2 wherein the height of the curved section of the upwardly extending portion is in the range of about 0.07 in. to about 0.13 in.

4. The siding panel of claim 1 wherein the siding panel and the second siding panel can be unlocked without the use of a tool before being fastened to a surface.

5. The siding panel of claim 1 wherein the top edge is configured as a nail hem.

6. The siding panel of claim 1 wherein the siding panel is manufactured via post-formed extrusion.

7. The siding panel of claim 1 wherein the siding panel is constructed from PVC, polymer, polypropylene, acrylic, Acrylonitrile Styrene Acrylate (ASA), fiberglass, aluminum, steel, any other plastic, wood, or metal, or combinations thereof.

8. A siding system comprising the first, second, and third siding panels as described in claim 1, disposed on an exterior face of a building, with the first locking mechanism of the first siding panel engaged with the second locking mechanism of the second siding panel, and the second locking mechanism of the first siding panel engaged with the first locking mechanism of the third siding panel.

9. A method for installing a siding system, comprising: providing the first, second and third siding panels as described in claim 2, and disposing the first, second and third siding panels on an exterior face of a building, and engaging the first locking mechanism of the first siding panel with the second locking mechanism of the second siding panel, and engaging the second locking mechanism of the first siding panel with the first locking mechanism of the third siding panel.

10. The siding panel of claim 1, wherein the height of the second curved channel portion is in the range of about 0.08 in. to about 0.25 in, and wherein the length of the first locking mechanism of the siding panel is in the range of about 0.25 in. to about 3.5 in.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The accompanying drawings are included to provide a further understanding of the methods and devices of the disclosure, and are incorporated in and constitute a part of this specification. The drawings are not necessarily to scale, and sizes of various elements may be distorted for clarity. The drawings illustrate one or more embodiment(s) of the disclosure, and together with the description serve to explain the principles and operation of the disclosure.

(2) FIG. 1A is a schematic perspective view of a siding panel according to one embodiment of the disclosure.

(3) FIG. 1B is a schematic side view of the siding panel of FIG. 1A.

(4) FIG. 2A is a schematic side view of a first locking mechanism according to an embodiment of the disclosure.

(5) FIG. 2B is a schematic side view of the first locking mechanism showing dimensions.

(6) FIG. 3A is a schematic side view of a second locking mechanism according to an embodiment of the disclosure.

(7) FIG. 3B is a schematic side view of the second locking mechanism showing dimensions.

(8) FIG. 4 is a schematic perspective view of two siding panels interlocking according to an embodiment of the disclosure.

(9) FIG. 5 is a schematic side view of the circled portion of FIG. 4.

(10) FIG. 6 is a schematic perspective view of two siding panels interlocked by a locking mechanism according to an embodiment of the disclosure.

(11) FIG. 7 is a schematic front view of two interlocking siding panels.

(12) FIG. 8 is a schematic rear view of two interlocking siding panels.

(13) FIG. 9 is a schematic top view of two interlocking siding panels.

(14) FIG. 10 is a schematic bottom view of two interlocking siding panels.

(15) FIG. 11 is a schematic left side view of two interlocking siding panels.

(16) FIG. 12 is a schematic right side view of two interlocking siding panels.

DETAILED DESCRIPTION

(17) The present inventor has noted disadvantages of conventional methods of installation of siding panels. In one example, a siding panel has a locking feature which secures two adjoining siding panels together. Once the locking feature is engaged, the siding panels are secured together tightly, and can only be removed using a special tool. The present inventor has noted that in many instances it is desirable to be able to easily disengage the panels during installation or for removal.

(18) Accordingly, one aspect of the disclosure is a siding panel having an improved siding panel locking mechanism. The siding panel is produced having enhanced locking features that facilitate the locking and unlocking of the siding panel during installation and/or for removal. Additionally, the siding panel can be manufactured as an extruded sheet using a plurality of dies as opposed to being injection molded, which allows for minimal material usage and cost savings.

(19) One embodiment of such a siding panel is described with respect to FIGS. 1-5 below. FIGS. 1A-1B show an example siding panel 100 according to an embodiment of the disclosure. The siding panel 100 may comprise a front face 102 and a rear face 104 (shown in FIG. 1B). The siding panel also includes a first end 106, and a second end 108, the first end being opposite the second end.

(20) The siding panel 100 further includes a top edge 110 and a bottom edge 112 being opposite the top edge. As shown in FIGS. 1A-1B, the top edge 110 is folded over to create two layers of material at the top edge. In some embodiments, the top edge 110 is formed as a folded nail hem. The nail hem includes one or more elongated nail slots 114 to receive a fastener such as a siding nail or staple. The folded or rolled over nail hem enhances wind resistance and performance, and also enhances rigidity of the panel, which allows for a stiffer, straighter overall siding panel. As shown, the bottom edge 112 is formed having a rounded or curved profile, allowing for a smooth transition for the mating pieces to lock and unlock. It should be understood that in alternate embodiments may have differently shaped profiles.

(21) The siding panel 100 also includes a first locking mechanism 120 located near the top edge 110, which may comprise a generally S-shaped portion having a plurality of undulations, made up of a series of grooves and protrusions, which extend along the entire front face 102 or a portion of the front face of the siding panel 100. The first locking mechanism 120 is configured to interlock with a second locking mechanism of a second adjacent siding panel, as described below. The interlocking connection facilitates the locking and unlocking of the siding panels during installation and removal. It should be understood that in a vertical siding panel, the first locking mechanism would be located on or near a side edge of the panel.

(22) The siding panel 100 further includes a second locking mechanism 130 located near the bottom edge 112, which is configured to interlock with a first locking mechanism of another adjacent, or third, siding panel, as described below. The second locking mechanism 130 is configured as a generally U-shaped portion which includes the bottom edge 112 of the panel 100, as well as an upwardly extending portion 132.

(23) Referring now to FIG. 2A, the first locking mechanism 120 may have a generally S-shape, which will be described in terms of four portions. A first portion 122 is substantially flat, and comprises the folded over portion of the nail hem 110. A second portion 124 is located next to the first portion 122, and comprises a channel that extends entirely or partially along the front face 102 of the siding panel 100. The second portion 124 is curved to create a part of the S-shape. A third portion 126 is formed next to the second portion 124. The third portion 126 comprises a curved section configured to rest against or close to the front face 102 of the siding panel 100, and also creates a part of the S-shape. The third portion 126 may also be configured as a flexible spring element which will spring back to its original position. A fourth portion 128 is located adjacent the third portion 126. The fourth portion 128 may be configured as an outwardly extending lip which extends away from the front face 102. It should be understood that in certain embodiments as otherwise described herein, the first locking mechanism 120 may include additional or less portions with varying shapes. In certain embodiments as otherwise disclosed herein, the three sections, 122, 124, and 126 can act together as a spring, or portions of sections 122 and 124, and may act together as a spring.

(24) In certain embodiments as otherwise disclosed herein, the first locking mechanism 120 may be formed with specific dimensions as described herein with reference to FIG. 2B. For example, in some embodiments, the overall length L of the first locking mechanism 120 (comprising sections 122-128) may be in the range of about 0.250 in. to about 3.500 in. In some embodiments, the height h.sub.1 of the first portion 122 may be in the range of about 0.066 in. to about 0.170 in, for instance. In some embodiments, the height h.sub.2 of the second portion 124 may be in the range of about 0.08 in. to about 0.250 in. In some embodiments, the gap G between the third portion 126 and the front face 102 of the panel may be in the range of about 0 in. (touching the front face) to about 0.08 in, for example. In some embodiments, the height h.sub.3 of the fourth portion 128 may be in the range of about 0.125 in. to about 0.375 in, for instance. The S-shape allows for a wide range of dimensions for a similar functioning lock.

(25) Referring to FIG. 3A, the second locking mechanism 130 is configured as a generally U-shaped portion which includes the bottom edge 112 of the panel 100, as well as an upwardly extending portion 132. The upwardly extending portion 132 includes a first section 134, which is configured as a curved section with an inwardly extending protrusion that extends entirely or partially along the upwardly extending portion 132. The first section 134 is configured to interlock with the second section 124 of a first locking mechanism of an adjacent panel, as described in detail below. The upwardly extending portion 132 further includes a second section 136 which is substantially flat, and adjoins the first section 134 to the bottom edge 112.

(26) In certain embodiments as otherwise disclosed herein, the second locking mechanism 130 may be formed with specific dimensions as described herein with reference to FIG. 3B. For example, in some embodiments, the overall height H of the bottom edge 112 may be in the range of about 0.300 in. to about 1.49 in. In some embodiments, the length l of the upwardly extending portion 132 may be in the range of about 0.429 in. to about 0.499 in, for instance. In some embodiments, the height h.sub.4 of the first section 134 may be in the range of about 0.07 in. to about 0.13 in., for example.

(27) In use, a horizontal or vertical siding panel is mounted onto a surface (not shown). In most instances, the surface is a vertical surface such as a wall of a building. The siding panel 100 is placed adjacent to either a starter strip (not shown, for a first horizontal siding panel) or to another siding panel (either below or side by side) which has already been fastened to the surface. As shown in FIG. 4, the siding panel 100 is locked into a second siding panel 200 by inserting the second locking mechanism 130 into the first locking mechanism 220 of an adjacent panel, in this case panel 200, which has already been fastened to the surface. Like parts are designated by like reference numbers (i.e., first locking mechanism 120 of first panel 100 is similar to first locking mechanism 220 of second panel 200).

(28) FIG. 5 shows a close-up view of the interlocking of the first locking mechanism 220 of panel 200 and the second locking mechanism 130 of panel 100. When the two panels are brought together, the first section 134 of the second locking mechanism 130 lifts up the first locking mechanism 220, and slides under the third portion 226 into the channel of the second portion 224. The locking mechanisms 220, 130 are pushed together until fully engaged, which is when the outwardly extending lip 228 of the first locking mechanism 220 abuts the surface of the bottom edge 112 of the second locking mechanism 130. Thus, the siding panels 100, 200 are interlocked. The siding panel 100 can then be fastened to the vertical surface by conventional methods.

(29) The above method can then be repeated for the next piece of siding panel, which is placed above the siding panel 100 (or side by side in the case of vertical siding panels), and so forth until the entire surface is covered.

(30) As noted above, the formation and interaction of the first and second locking mechanisms 220, 130 allow for the siding panels to be easily disconnected prior to the fastening of the siding panel to a surface, without the use of a tool, such as a zip tool. An installer may simply pull or force the panels apart manually so the first section 134 of the second locking mechanism 130 slides back under the third portion 226 of the first locking mechanism 220, thereby disengaging the first locking mechanism 220 from the second locking mechanism 130. The locking mechanisms also facilitate insertion of the siding panels since the two initial contact points (of 134 and 228) are shaped like incline planes or ramps that easily open the locking mechanism for installation and removal.

(31) The siding panels of the present disclosure may be manufactured by a post-formed extrusion method, which is easier and more cost efficient than being injection molded or profile extruded. In one example, a flat sheet is heated and extruded through a series of dies. The overall shape of the siding panel, as well as the features of the first and second locking mechanisms, are formed as the sheet moves through the dies. Once the desired shape is created, the siding panel is flash cured to keep the shape.

(32) Notably, the locking mechanism of the present disclosure provides the siding panel with greater wind performance and overall rigidity due to the full rollover of the nail hem, in which a double layer of material is present where the fasteners are applied through the siding to hold it to the mounting surface or wall. Additionally, the shapes of the locking mechanisms are sufficient to allow for thermal expansion of the siding panels, since the space in section 224 is sufficiently large enough to compensate for any misalignment and allow for free movement in comparison to 134.

(33) As the person of ordinary skill in the art will appreciate, the siding panels disclosed herein may be constructed of a single piece or layer of material, such as vinyl, allowing for inexpensive production. In certain embodiments as otherwise disclosed herein, the material may comprise any known siding material, such as PVC, polymer, polypropylene, acrylic, Acrylonitrile Styrene Acrylate (ASA), fiberglass, aluminum, steel, any other plastic, wood, or metal, or combinations thereof.

(34) FIGS. 6-12 show various views of an example siding panel and locking mechanism in accordance with the present disclosure.

(35) It will be apparent to those skilled in the art that various modifications and variations can be made to the processes and devices described here without departing from the scope of the disclosure. Thus, it is intended that the present disclosure cover such modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.