Patent Application
20220213718
The present disclosure relates to the field of door handle assemblies. In particular, this disclosure relates to a device and method of providing a universal chassis that can accommodate a variety of escutcheons.
Door handle assemblies are commonly known in the art and are used for installation on different types of doors. The door handle assembly is generally comprised of a rotatable handle having a locking mechanism, a handle mount, and a faceplate. Door handle assemblies may be used for installation on either newly manufactured doors or currently installed doors, which require replacement of an existing door handle assembly. Further, replacing an existing door handle assembly may not require replacing the entire door handle assembly, but instead the internal chassis or an entire interior and/or exterior assembly.
The door handle assemblies currently available include internal chassis pieces and faceplates that are manufactured to fit together. Accordingly, although portions of a door handle assembly may be replaced, typically such replacements are “like for like” because a chassis is typically designed for use with the same faceplate type with which that chassis was originally sold. Accordingly, if a user wishes to change the type of faceplate used in the door handle assembly, typically the entire assembly must be replaced.
In general terms, this disclosure is directed toward a device and method for providing a universal chassis that can accommodate a variety of escutcheons.
In a first aspect, a door handle assembly includes a chassis, a first and second escutcheon, and a latch assembly. The chassis includes an interior chassis portion and an exterior chassis portion. The interior chassis portion is configured to extend from a first side of a door and includes at least one trim plate having at least one first fastener engagement mechanism. The exterior chassis portion is configured to extend from a second side of a door and includes at least a second trim plate having at least one second fastener engagement mechanism. The first escutcheon has at least one first post configured to removably engage the at least one first fastener engagement mechanism. The second escutcheon has at least one second post configured to removably engage the at least one second fastener engagement mechanism. The latch assembly extends between the exterior chassis portion and the interior chassis portion. The at least one first fastener engagement mechanism and the at least one second fastener engagement mechanism are capable of removably engaging with a plurality of different escutcheons.
In another aspect, a method of installing a door handle assembly is described. The method includes positioning a latch assembly at least partially within a crossbore of a door. An interior escutcheon is attached to a first trim plate of an interior chassis portion and an exterior escutcheon is attached to a second trim plate of an exterior chassis portion. The interior chassis is positioned at a borehole on an interior side of the door, and the interior chassis comprises an interior handle mount attachable to an interior handle. A first mounting post and a second mounting post extend toward and are engageable with an exterior chassis. The exterior chassis portion is positioned at the borehole on an exterior side of the door. The exterior chassis comprises an exterior handle mount attachable to an exterior handle. An exterior latch mount is rotatably attached to the latch assembly and the interior chassis portion. The interior handle is attached to the interior handle mount and the exterior handle is attached to the exterior handle mount. At least one mounting screw is inserted and tightened into a corresponding mounting post that extends from the interior escutcheon through the interior chassis portion and to the exterior chassis portion. The interior escutcheon and the exterior escutcheon are removable from the interior chassis portion and the exterior chassis portion.
In yet another aspect, a door handle assembly is described. The door handle assembly includes a chassis, an interior escutcheon, an exterior escutcheon, and a latch assembly. The chassis comprises an interior chassis portion and an exterior chassis portion. The interior chassis portion is configured to extend from a first side of a door and comprises at least one first recess and at least one first catch. The exterior chassis portion is configured to extend from a second side of a door and comprises at least one second recess and at least one second catch. The interior escutcheon comprises at least one first post and at least one first cantilever and the exterior escutcheon comprises at least one second post and at least one second cantilever. The latch assembly extends between the exterior chassis portion and the interior chassis portion. The at least one first recess is configured to removably engage with the at least one first post and the at least one first catch is configured to removably engage with the at least one first cantilever. The at least one second recess is configured to removably engage with the at least one second post and the at least one second catch is configured to removably engage with the at least one second cantilever.
Corresponding reference characters indicate corresponding parts throughout the several views. The exemplifications set out herein illustrate an embodiment of the invention, and such exemplifications are not to be construed as limiting the scope of the invention in any manner.
The following drawings are illustrative of particular embodiments of the present disclosure and therefore do not limit the scope of the present disclosure. The drawings are not to scale and are intended for use in conjunction with the explanations in the following detailed description. Embodiments of the present disclosure will hereinafter be described in conjunction with the appended drawings, wherein like numerals denote like elements.
The figures and descriptions provided herein may have been simplified to illustrate aspects that are relevant for a clear understanding of the herein described devices, systems, and methods, while eliminating, for the purpose of clarity, other aspects that may be found in typical devices, systems, and methods. Those of ordinary skill may recognize that other elements and/or operations may be desirable and/or necessary to implement the devices, systems, and methods described herein. Because such elements and operations are well known in the art, and because they do not facilitate a better understanding of the present disclosure, a discussion of such elements and operations may not be provided herein. However, the present disclosure is deemed to inherently include all such elements, variations, and modifications to the described aspects that would be known to those of ordinary skill in the art.
References in the specification to “one embodiment,” “an embodiment,” “an illustrative embodiment,” etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may or may not necessarily include that particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to affect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described. Additionally, it should be appreciated that items included in a list in the form of “at least one A, B, and C” can mean (A); (B); (C); (A and B); (A and C); (B and C); or (A, B, and C). Similarly, items listed in the form of “at least one of A, B, or C” can mean (A); (B); (C); (A and B); (A and C); (B and C); or (A, B, and C).
In the drawings, some structural or method features may be shown in specific arrangements and/or orderings. However, it should be appreciated that such specific arrangements and/or orderings may not be required. Rather, in some embodiments, such features may be arranged in a different manner and/or order than shown in the illustrative figures. Additionally, the inclusion of a structural or method feature in a particular figure is not meant to imply that such feature is required in all embodiments and, in some embodiments, may not be included or may be combined with other features.
In example aspects of the present disclosure, a door handle assembly includes a universal chassis that allows for the installation of any escutcheon, including escutcheons having different aesthetic appearances. Such an assembly eliminates the requirement that a chassis is only able to accommodate a single escutcheon. Further, the escutcheons may be removably attached to a trim plate of the chassis, allowing for the escutcheon to be changed without having to also change the chassis.
The chassis and escutcheon and/or trim plate adapter may include a plurality features that create a secure attachment that prevents movement in any direction. For example, and as described below, an example embodiment includes two offsetting posts and two offsetting screw attachments that correctly align the escutcheon (for example, squarely) to the universal chassis and prevents subsequent movement between the escutcheon and/or trim plate adapter and the universal chassis. In alternative embodiments, other alignment features, such as use of posts, attachment tabs, and crush ribs may be used.
The first chassis portion 200a and the second chassis portion 200b are configured to engage the latch assembly 102 and each other to actuate a latch bolt 110. As described in more detail below, the chassis 200 is a universal chassis and is configured to engage with a plurality of different types of escutcheons 104, with or without a trim plate adapter. The first chassis portion 200a has a trim plate 114a configured to be located on an outside of a first side of a door, and the second chassis portion 200b has a trim plate 114b configured to be located on an outside of a second side of the door. The trim plates 114a, 114b are capable of removably connecting to a plurality of escutcheons 104. The universal chassis 200 allows a user to change the escutcheon 104 (without or without a trim plate adapter 300) without having to also change the chassis 200.
The door handle assembly 100 includes two escutcheons 104, one located on each exterior side of the interior chassis portion 200a and the exterior chassis portion 200b. As described in further detail below, an escutcheon 104 may be a stamped rose or a cast rose. A stamped rose may also include a trim plate adapter 300 configured to engage the stamped rose and the trim plates 114a, 114b of the chassis 200.
A handle 106a is engageable with an interior handle mount 112a, and a handle 106b is engageable with an exterior handle mount 112b. The escutcheons 104 include a handle opening 304, allowing the handles 106a, 106b to extend through the escutcheon 104 to the chassis 200.
At least one mounting screw 108 is insertable through and engageable with the escutcheon 104, the exterior chassis portion 200b, and the interior chassis portion 200a. In the example shown, a pair of such mounting screws 108 are used. The interior chassis portion 200a includes a pair of mounting posts 116 that extend toward and are engageable with the exterior chassis portion 200b. The exterior chassis portion 200b includes an exterior latch mount 118 that rotatably attaches to the latch assembly 102 and the interior chassis portion 200a.
As shown in the example embodiment, four fastener attachments 202a, 202b, 202c, 202d are included on the trim plate 114. Also included are four catches 204a, 204b, 204c, 204d. However, fewer fastener attachments 202 and/or fewer catches 204 may be implemented on the trim plate 114, for example two fastener attachments 202a, 202d and two catches 204c, 204b.
In an example embodiment, the fastener attachment 202 is a recess or aperture through the trim plate 114 that is configured to receive a post from a trim plate adapter 300 or an escutcheon 104. The recess is sized and shaped to securely and snugly fit the post, which is described below. For example, the fastener attachment 202 is in the form of a recess that includes an interference fit to securely attach the escutcheon 104 to the trim plate 114. In another embodiment, the fastener attachment 202 is an opening configured to allow a post of the escutcheon 104 or trim plate adapter 300 to extend through.
The at least one catch 204 includes a cantilever feature, which is described in more detail at
The trim plate adapter 300 includes a first fastener hole 302a and a second fastener hole 302b, a handle opening 304, at least one post 306, and at least one snap fit joint 308.
The trim plate adapter 300 has an outer dimension configured to fit within an escutcheon 104. The trim plate adapter 300 includes first and second connection mechanisms 310a, 310b that allow the trim plate adapter 300 to securely engage the escutcheon 104. The trim plate adapter 300 may also include a plurality of ridges 312 along an outside edge that provide an interference or friction fit within the escutcheon 104. The plurality of ridges 312 extend in a longitudinal direction along a perimeter of the trim plate adapter 300. In an embodiment, the plurality of ridges 312 are sized to fit snugly within the escutcheon 104. In alternative examples, the ridges 312 can extend in any direction non-parallel to the perimeter of the escutcheon 104.
The trim plate adapter 300 includes at least one post 306 that extends in a direction toward the chassis 200. As shown in the example embodiment, the four posts 306a, 306b, 306c, 306d extend from a base 314 of the trim plate adapter 300. However, two or four posts may be utilized.
In an embodiment, the at least one post 306 includes a plurality of ridges 312 that form a frictional engagement between the trim plate adapter 300 and the trim plate 114 of the chassis 200. The ridges 312 extend in a perpendicular direction from the post 306. In an embodiment, the plurality of ridges 312 are sized to fit snugly within a recess of the chassis 200. In alternative examples, the ridges 312 can extend in any direction non-parallel to the perimeter of the post 306.
In yet another embodiment, the plurality of ridges 312 are located on the post 306, such that when extended through a fastener attachment 202 comprising an opening of the chassis 200, the ridges 312 maintain the post 306 through the opening.
In a further embodiment, the fastener attachment 202 of the chassis 200 and the post 306 of the trim plate adapter 300 are used to align the chassis 200 and the trim plate adapter 300. The snap fit joint 308 is used to securely attach the trim plate adapter 300 to the chassis 200.
As shown in the example embodiment, four snap fit joints 308a, 308b, 308c, 308d are included on the trim plate adapter 300. However, two or four snap fit joints 308 may be utilized. The snap fit joints 308 maintain the fit between the trim plate adapter 300 and the trim plate 114. The snap fit joints 308 are described in further detail at
The trim plate adapter 300 may be sized and shaped so the post 306 of the trim plate adapter 300 engages with the fastener attachment 202 of the chassis 200, and so the snap fit joint 308 engages with the catch 204. Further, the trim plate adapter 300 is sized and shaped so the fastener holes 302a, 302b of the trim plate adapter 300 align with the fastener holes 206a, 206b of the chassis 200. The trim plate adapter 300 may have an exterior shape sized to fit any size escutcheon 104, especially trim plates 114 that have a larger length and width than a traditional escutcheon 104.
It is noted that, in the absence of a trim plate adapter 300, an escutcheon may be constructed to have interior features analogous to those of the trim plate adapter, to engage with the trim plate 114 analogously. However, in such arrangements, while escutcheons may be interchangeable among those which have such internal features, use of the trim plate adapter 300 allows a variety of other escutcheon types to be used by disassociating the exterior appearance of the escutcheon from the interior engagement mechanism connecting that escutcheon to the trim plate 114.
In the example shown, each of the four posts 306a, 306b, 306c, 306d extend through each of the four fastener attachments 202a 202b, 202c, 202d. The fastener attachment 202 of the trim plate 114 includes recesses through which each of the posts 306 extends through. The posts 306 may include a plurality of ridges that create an interference fit to securely attach to the trim plate 114 without movement in any direction.
The chassis 200 is secured to the trim plate adapter 350 with the at least one fastener 406 connected to the at least one fastener attachment 202. In the example shown, two fastener attachments 202a, 202b are recesses configured to accept first and second posts 306a, 306b. Two other fastener attachments 202a, 202c are configured to accept first and second fastener 406a, 406b. The fasteners 406a, 406b may be a screw, as shown.
The chassis 200 is secured to the trim plate adapter 400 with the at least one snap fit joint 308 connected to the at least one catch 204 and the at least one post (not shown) connected to the at least one fastener attachment 202b, 202d. The connection between the at least one snap fit joint 308 and the at least one catch 204 is shown in more detail at
In the example shown, two of the fastener attachments 702a, 702b are openings, and two of the fastener attachments 704a, 704b are recesses. The first and the second posts (not shown) extend through two of the fastener attachment 702a, 702b, and first and second fastener 406b, 406b extend into two of the fastener attachments 704a, 704b.
The escutcheon 700 includes first and second fastener holes 302a, 302b, a handle opening 304, and at least one post 702. In the embodiment shown, the escutcheon 700 includes four posts 702, two of the posts 702 extend through a fastener attachment 202 in the chassis 200 and two of the posts 702 extend into a fastener attachment 202 of the chassis 200. However, in other embodiments, the configuration of the posts 702 may be different.
In this example embodiment, the cast escutcheon 700 is directly mounted to the trim plate without use of a trim plate adapter. However, in alternative arrangements, a trim plate adapter could be used. The shape of the trim plate adapter, as noted above, could accommodate a shape of the escutcheon.
The connection between the escutcheon (e.g., escutcheons 104, 700) and/or trim plate adapter (e.g., adapters 300, 350, 400) and the trim plate 114 are removable connections, so the trim plate 114 is capable of connecting to a plurality of different escutcheons and/or trim plate adapters. Further, a new and/or different escutcheon and/or trim plate adapter may be removably connected to the trim plate 114 while the chassis 200 remains installed in a door.
In an embodiment, the trim plate adapter 400 is connected to the escutcheon 104 via a friction fit and the trim plate adapter 400 is connected to the trim plate 114 of the chassis 200 via first and second fasteners 902a, 902b. Subsequently, when a second escutcheon 700 is to be connected to the chassis 200, the first and second fasteners 902a, 902b are disconnected and the trim plate adapter 400 and first escutcheon 104 are removed. Then, a second escutcheon 700 is connected to the trim plate 114 of the chassis 200 via the first and second fasteners 902a, 902b.
An example method of installing a door handle assembly in a door as described herein includes the following. The door includes a bore formed through the door from an exterior side to an interior side. The door also includes a latch bolt bore formed from an edge of the door to the bore.
A first escutcheon (e.g., escutcheon 104) is attached to a trim plate 114 of an interior chassis portion 200a, and then the interior chassis portion 200a is inserted into the bore on the interior side of the door. A second escutcheon (e.g., escutcheon 104) is attached to a trim plate 114 of an exterior chassis portion 200b, and then the exterior chassis portion 200b is inserted into the bore on the exterior side of the door. The latch assembly is inserted into the latch bolt bore of the door. The interior chassis portion 200a is connected to the latch assembly 102 and the exterior chassis portion 200b, which forms the universal chassis 200.
The first escutcheon 104 may be attached to the trim plate 114 with or without a trim plate adapter, such as the trim plate adapters 300, 350400.
After the chassis 200 is installed, a first handle 106a is connected to the interior chassis portion 200a and a second handle 106b is connected to the exterior chassis portion 200b. Before an escutcheon is removed, the handle 106 must also be removed.
When a new escutcheon is desired, the chassis 200 is removed from the door. Then, a new escutcheon (with a trim plate adapter, if needed) is attached to one of the trim plates 114. When changing the escutcheon, the chassis 200 does not also need to be changed. Further, if the trim plate 114 is first engageable with an escutcheon, the trim plate 114 is subsequently engageable with a trim plate adapter.
Referring to
The description and illustration of one or more embodiments provided in this application are not intended to limit or restrict the scope of the invention as claimed in any way. The embodiments, examples, and details provided in this application are considered sufficient to convey possession and enable others to make and use the best mode of the claimed invention. The claimed invention should not be construed as being limited to any embodiment, example, or detail provided in this application. Regardless of whether shown and described in combination or separately, the various features (both structural and methodological) are intended to be selectively included or omitted to produce an embodiment with a particular set of features. Having been provided with the description and illustration of the present application, one skilled in the art may envision variations, modifications, and alternate embodiments falling within the spirit of the broader aspects of the claimed invention and the general inventive concept embodied in this application that do not depart from the broader scope.
This application claims priority to and the benefit of U.S. Provisional Application No. 63/134,821, filed Jan. 7, 2021, the disclosure of which is hereby incorporated by reference herein in its entirety.
| Number | Date | Country | |
|---|---|---|---|
| 63134821 | Jan 2021 | US |
