WO2017176260A1

WO2017176260A1 - Bezels with cable routing channels

Info

Publication number: WO2017176260A1
Application number: PCT/US2016/026126
Authority: WO
Inventors: David Thomas BYARGEON; David Brent SPOMER
Original assignee: Hewlett Packard Enterprise Development Lp
Priority date: 2016-04-06
Filing date: 2016-04-06
Publication date: 2017-10-12

Abstract

Examples herein relate to bezels for computing devices. For example, a bezel for a computing device includes a door rotatably coupled to the bezel. The door includes an inner panel coupled to an outer panel. Each panel includes a downward facing louvre assembly to prevent a line of sight to components of the device and allow airflow from the device. The outer panel includes an upward facing louvre. The bezel includes a protrusion on a top portion of the bezel, where the protrusion of the bezel and the upward facing louvre of the outer panel are to form a channel for routing a cable of the device.

Description

BEZELS WITH CABLE ROUTING CHANNELS

BACKGROUND

[0001] The Federal Information Processing Standard (FIPS) Publication 140-2 is a U.S. government computer security standard designed to coordinate the

requirements and standards for cryptography modules that include both hardware and software components. FIPS 140-2 defines four levels of security, in which level 1 provides the lowest level of security and level 4 provides the highest level of security. The security standards include requirements that prevent unauthorized users from viewing, tampering, or damaging internal components of computing devices. For example, level 2 generally requires a tamper evidence enclosure that is visually opaque.

BRIEF DESCRIPTION OF THE DRAWINGS

[0002] Some examples of the present application are described with respect to the following figures:

[0003] FIG. 1 depicts a view of a bezel including a door in a closed position, according to an example of the present disclosure;

[0004] FIG. 2 depicts a view of a bezel including a door in an open position, according to an example of the present disclosure;

[0005] FIG. 3 is a cross-sectional side view of a bezel including a door in a closed position, according to an example of the present disclosure;

[0006] FIG. 4 is a cross-sectional side view of a bezel including a door in a closed position, and a cable routing channel for a device cable, according to an example of the present disclosure;

[0007] FIG. 5 is a cross-sectional side view of a bezel including a door in an open position, and a cable routing channel for a cable, according to an example of the present disclosure; and

[0008] FIG. 6 is a method of forming a bezel with a cable routing channel, according to an example of the present disclosure. DETAILED DESCRIPTION

[0009] Examples described herein relate to bezels for computing devices, having cable routing channels. In particular, the examples relate to bezels that meet the FIPS requirements, while substantially minimizing or reducing airflow restrictions and providing cable routing channels for cables of the computing devices. Accordingly, the examples described herein prevent unauthorized users from viewing or tampering with internal components of the computing devices while maintaining serviceability and cable routing functionalities.

[0010] As explained above, FIPS (e.g., level 2) specifies enhanced security mechanisms for a cryptographic module by requiring tamper evidence (e.g., tamper- evident coatings or seals, pick-resistant locks) which must be broken to attain physical access to the plain text cryptographic keys and critical security parameters within the module (e.g., computing devices such as servers, storage devices, networking devices, etc.), and a tamper-evident enclosure that is visually opaque. Thus, compliance with FIPS requirement may be difficult to achieve and may significantly increase heating within the module, which may adversely affect the operation and performance of the module.

[0011] Examples described herein address the above challenges by providing a bezel including a door (e.g., a bezel cover) having double louvres that prevent line of sight and access to components of the device while minimally limiting airflow from the device. The door is formed by adhering two panels (i.e., an inner and an outer panel), where a set of downward facing louvres are punched in each of the panels. The resulting door is a single unit with matching louvres facing opposite directions. Further, the outer panel includes an upward facing louvre (e.g., at the edge or top portion of the outer panel), and the bezel includes a protrusion on a top portion of the bezel (e.g., the inner top portion). The protrusion of the bezel and the upward facing louvre of the outer panel together form a channel for routing a cable of the device. The door is rotatably hinged to the bezel, and the bezel is removably attached to a chassis of the device (e.g., the rear of the chassis) via attachment members to prevent visual access and to facilitate airflow from the device to the external environment. Further, a lock assembly can be placed on the door (i.e., on the panels) to prevent the door from being opened. Accordingly, attachment members for attaching the bezel to the device can only be accessed after opening the locked door, thereby providing secured access.

[0012] In one example, a bezel for a computing device includes a door rotatably coupled to the bezel. The door includes an inner panel coupled to an outer panel. Each panel includes a downward facing louvre assembly to prevent a line of sight to components of the device and allow airflow from the device. The outer panel includes an upward facing louvre. The bezel includes a protrusion on a top portion of the bezel, where the protrusion of the bezel and the upward facing louvre of the outer panel are to form a channel for routing a cable of the device.

[0013] In another example, a system includes a computing device and a bezel for enclosing a chassis of the device. The bezel includes a door attached to the bezel. The door includes an inner panel including a first downward facing louvre assembly and an outer panel coupled to the inner panel and including a second downward facing louvre assembly. The first and second downward facing louvre assembly are to prevent a line of sight access to components of the device and to facilitate airflow from the device. The outer panel includes an upward facing louvre. The bezel includes a bracket disposed on a top portion of the bezel, where the bracket and the upward facing louvre of the outer panel form a channel for routing a cable of the device.

[0014] In another example, a method includes forming a first plurality of downward facing louvres on a first panel and forming a second plurality of downward facing louvres on a second panel. The method includes coupling the first panel to the second panel to form a door of a bezel. The method includes forming an upward facing louvre at a top portion of the outer panel and forming a protrusion from an inner top portion of the bezel extending downwards, the upward facing louvre and the protrusion forming a cable routing channel for the device. The method also includes removably mounting the bezel to a chassis of a computing device, where the first plurality of louvres, the second plurality of louvres, and the protrusion are to prevent a line of sight access to components of the device and to direct airflow out of the device. [0015] Referring now to the figures, FIG. 1 depicts a view of a bezel including a door in a closed position, according to an example of the present disclosure. Bezel 100 includes a door 120 rotatably coupled to the bezel 100 via a hinge (not shown). In the example of FIG. 1, door 120 is in a closed position. Door 120 is a single unit comprising an outer panel 140 coupled (e.g., via adhesion) to an inner panel (not shown). Outer panel 140 and inner panel can be made of sheet metal or any other material of sufficient strength that may not be easily damaged using reasonable force, such that evidence of the force would show physical damage to the door 120.

[0016] Outer panel 140 includes downward facing louvres 142. Similarly, inner panel includes downward facing louvres facing an opposite direction (i.e., towards the chassis of the device) from downward facing louvres 142 of the outer panel 140. Downward facing louvres 142 can be formed by punching the louvres 142 into the sheet metal material of the outer panel 140, or using any other fabrication process. Outer panel 140 and inner panel are adhered or affixed together to form a single unit double louvered door 120 of the bezel 100. Outer panel 140 and inner panel can be adhered using any coupling process and/or solutions (e.g., epoxy, welding, etc.). In some examples, the coupling process or solution for adhering the outer panel 140 and the inner panel is of sufficient strength such that the force needed to separate the outer panel 140 and inner panel would result in visible damage or evidence of tampering.

[0017] The double louvered door 120 formed by adhering the outer panel 140 to the inner panel creates an inverted "U-shaped" louvre (or downward facing U-shape louvre) assembly that facilitates or directs airflow out of the device and also prevents a line of sight access to the device when the door 120 is placed on the chassis of the device. The inner panel is in closer proximity to, and faces the chassis of the device, and the outer panel 140 is further from the chassis of the device and faces the external environment. Thus, the louvre assembly 142 of the outer panel is downward facing towards a direction of the external environment and the inner panel is downward facing toward a direction of the chassis of the device.

[0018] Holes can be formed on opposite ends of the outer panel 120 and the inner panel to mount a lock assembly 160. Lock assembly 160 can include a head portion facing the external environment to receive a lock key, and a rear portion to provide a locking mechanism against the bezel 100. The lock assembly 160 is to prevent the door 120 from being opened when affixed to the bezel 100. Accordingly, lock assembly 160 can prevent the door 120 from rotating to the open position about the hinge.

[0019] FIG. 2 depicts a view of a bezel including a door in an open position, according to an example of the present disclosure. Door 120 is rotatably coupled to the bezel 100 via hinge 204. Hinge 204 allows door 120 to rotate between the closed and the open position. In some examples, hinge 204 is designed to include a nonremovable pin. In the example of FIG. 2, door 120 is in the open position and reveals the inner panel 208.

[0020] Inner panel 208 is adhered or coupled to the outer panel 140 to form a single unit (i.e., door 120). Inner panel 208 includes downward facing louvres 218. The locking mechanism of the lock assembly 160 is also revealed when the door 120 is in the open position. Inner panel 208 also includes an upward facing louvre 228. Upward facing louvre 228 combines with a protrusion 202, extending downwards from the inner portion of the bezel 100, to form a cable routing channel for a cable of the device. In some examples, protrusion 202 can be a bracket disposed on the inner top portion of the bezel 100. The protrusion 202 and the upward facing louvre 228 are to guide the cable from the device to the external environment (e.g., to plug into a power supply or power outlet). Further, the louvre assembly 142 of the outer portion 140, the louvre assembly 218 of the inner panel and the protrusion 202 of the bezel are to prevent a line of sight access to the device when the door 120 is in the closed position.

[0021] FIG. 3 is a cross-sectional side view of a bezel including a door in a closed position, according to an example of the present disclosure. Bezel 100 can be removably attached to the chassis 300 of the device via attachment member 360. Attachment members 360 can be, for example, captive screws, mounting buttons, or any other mounting devices to removably mount the bezel 100 to the surface of the chassis 300 of the device. Bezel 100 can be mounted to the rear or back of the chassis 300 of the device. Attachment members 360 may only be accessed when the door 120 is opened (i.e., unlocked using the locking assembly 160). Thus, to remove the bezel, a user first unlocks and opens the door 120 to access the attachment members 360, thereby providing security against unauthorized users. [0022] Door 120 is rotatably coupled to the bezel 100 via hinge 204.

Accordingly, door 120 can rotate about the hinge 204 to move the door 120 between an open position and a closed position. For example, door 120 can open downwards about the hinge 204. In some examples, hinge 204 is a non-removable pin hinge. Door 120 includes an inner panel 208 and an outer panel 140 adhered together to form a single unit. Inner panel 208 and outer panel 140 can be made of a metallic material such as a sheet metal. Inner panel 208 includes a plurality of downward facing louvres 218 and outer panel 140 includes a plurality of downward facing louvres 142. Downward facing louvres 218 and 142 can be punched or extruded through the inner panel 208 and outer panel 140, respectively, or by any other fabrication methods or processes.

[0023] The coupling of the inner panel 208 and the outer panel 140 to form a single unit creates an inverted "U-shaped" double louvered door 120, where the louvres 218 of the inner panel 208 are in an opposite direction, and facing the chassis 300, from the louvres 142 of the outer panel 140, and facing the external environment. Outer panel 140 also includes an upward facing louvre 228. The upward facing louvre 228 can be located at a top portion of the outer panel 208. The inverted "U- shaped" double louvered door 120, and the protrusion 202 of the bezel, prevent a line of sight (LOS) access to the chassis 300 of the device and components therein.

Moreover, the inverted "U-shaped" double louvered door 120 facilitates airflow from the chassis 300 of the device and/or significantly minimizes airflow restriction from the device, thereby maintaining the performance of the device while complying with the FIPS requirements.

[0024] FIG. 4 is a cross-sectional side view of a bezel including a door in the closed position, and a cable routing channel for a device cable, according to an example of the present disclosure. Bezel 100 can be removably mounted to the rear chassis 300 of a device using the attachment members 360. Attachment members 360 may only be accessed when the door 120 is opened. Accordingly, bezel 100 may be removed from the chassis 300 by unlocking and opening the door 120.

[0025] The device (e.g., server device, networking device, storage device, etc.) can include a cable 410 (e.g., a power cable) rear portion of the chassis 300. As shown in FIG. 4, the protrusion 202 of the bezel 100 and the upward facing louvre the cable 410. For example, when the door 120 is in the closed position, protrusion 120 and the upward facing louvre 228 of the outer panel provide a channel for routing the cable 410 to the external environment such that the cable 410 can be coupled to an external device or source (e.g., a power source). By providing the cable routing channel, bezel 100 allow/permit the routing of cables from the chassis 300 of the device, thereby enabling ease of serviceability by an authorized user. Further, bezel 100 enables other devices to be mounted above or below the device without interference.

[0026] FIG. 5 is a cross-sectional side view of a bezel including a door in an open position, and a cable routing channel for a cable, according to an example of the present disclosure. In the example of FIG. 5, door 120 is in the open position, revealing the attachment members 360 for removably attaching the bezel 100 to the chassis 300 of the device. Door 120 is attached to the bezel 100 via the hinge 204 that enables the door 120 rotate between the open and closed positions. Door 120 can be rotated to the open position by unlocking the door using the lock assembly 160, thereby preventing unauthorized access to the bezel (and to the attachment members 360). Protrusion (or bracket) 202 of the bezel 100 together with the upward facing louvre 228 of the outer panel 140 form a channel for routing the cable 410 of the device from the chassis 300 to an external environment outside the bezel.

[0027] FIG. 6 is a method of forming a bezel with a cable routing channel, according to an example of the present disclosure. It should be apparent to those of ordinary skill in the art that method 600 represents a generalized illustration and that other operations may be added or existing operations may be removed, modified, or rearranged without departing from a scope of the method 600.

[0028] Method 600 includes forming a first plurality of downward facing louvres on a first panel, at 610, and forming a second plurality of downward facing louvres on a second panel, at 620. For example, a first set of downward facing louvres 218 can be formed on the inner panel 208 by a punching or extruding mechanism or process. Similarly, a second set of downward facing louvres 142 can be formed on the outer panel 140 using the punching or extrusion process. In some examples, inner panel 208 and outer panel 140 can be sheet metal. [0029] Method 600 includes coupling the first panel to the second panel to form a door of a bezel, at 630. For example, the inner panel 208 can be adhered or joined to the outer panel 140 to form the door 120, which is a single unit, using any adhering methods or processes such as application of epoxy, spot welding, etc. The method or process of bonding the outer panel 140 and the inner panel 208 is of sufficient strength such that the force needed to separate the two panels would result in visible damage or tampering to the door 120. Door 120 thus includes the first set of louvres 218 facing an opposite direction from the second set of louvres 142 (i.e., an inverted "U-shaped" doubled louvered door).

[0030] Method 600 includes forming an upward facing louvre at a top portion of the second panel, at 640. For example, upward facing louvre 228 can be formed on the outer panel 140 by a punching or extrusion process. Upward facing louvre 228 can be formed on the top portion of the outer panel 140 (e.g., close to the edge of the outer panel 140. No corresponding louvre is formed in the inner panel 208 opposite to the side/portion where the upward facing louvre 228 is formed on the outer panel 140.

[0031] Method 600 includes forming a protrusion from an inner top portion of the bezel extending downwards, where the upward facing louvre and the protrusion are to form a cable routing channel for a device cable, at 650. For example protrusion 202 can be formed at the top of the inner portion of the bezel 100, where the protrusion 202 extends downwards. In some examples, protrusion 202 can be a bracket extending downwards from the inside top portion of the bezel 100, close to the edge of the bezel where the door 120 meets the bezel 100 when closed. The upward facing louvre 228 and the protrusion 202, together, form a cable routing channel for the cable 410 of the device.

[0032] Method 600 includes removably mounting the bezel to a chassis of the device, where the first plurality of louvres, the second plurality of louvres, and the protrusion are to prevent a line of sight access to components of the device and to direct airflow out of the device, at 660. For example, bezel 100 can be removably mounted to the chassis 300 of the device by using the attachment members 360. In some examples, attachment members 360 can be captive screws. In certain examples, bezel 100 can be removably attached to the rear chassis 300 of the device where the cable 410 extends out of the device. The double louvered configuration created by coupling the inner panel 208 and the outer panel 140, and the protrusion 202 prevent line of sign access to components within the chassis 300 of the device and also direct airflow out of the chassis of the device to the external environment.

[0033] In the foregoing description, numerous details are set forth to provide an understanding of the present disclosure. However, it will be understood by those skilled in the art that the present disclosure may be practiced without these details. While the present disclosure has been disclosed with respect to a limited number of examples, those skilled in the art will appreciate numerous modifications and variations therefrom. It is intended that the appended claims cover such modifications and variations as fall within the true spirit and scope of the present disclosure.

Claims

CLAIMS What is claimed is:

1. A bezel for a computing device, comprising:

a door rotatably coupled to the bezel, the door comprising:

an inner panel coupled to an outer panel, each panel comprising: a downward facing louvre assembly to:

prevent a line of sight to components of the device; and allow airflow from the device,

wherein the outer panel comprises an upward facing louvre; and wherein the bezel comprises a protrusion on a top portion of the bezel, and wherein the protrusion of the bezel and the upward facing louvre of the outer panel are to form a channel for routing a cable of the device.

2. The bezel of claim 1, wherein the protrusion is to prevent a line of sight to components of the device.

3. The bezel of claim 1, wherein the door is rotatably coupled to a bottom portion of the bezel via a hinge.

4. The bezel of claim 3, wherein the door is to rotate about the hinge between an open position and a closed position.

5. The bezel of claim 4, wherein the protrusion and the upward facing louvre are to guide the cable from the device to an external environment when the door is in the closed position.

6. The bezel of claim 4, comprising attachment members to removably attach the bezel to a chassis of the device, wherein the attachment members are accessible when the door is in the open position.

7. The bezel of claim 6, wherein the bezel is removably attachable to a rear portion of the chassis via the attachment members.

8. The bezel of claim 1, wherein the inner panel is coupled to the outer panel to form a single unit of the door such that the louvre assembly of the inner panel and the outer panel are facing opposite directions.

9. The bezel of claim 8, wherein an airflow path is defined across the louvre assembly of the inner panel to the louvre assembly of the outer panel.

10. A system, comprising:

a computing device; and

a bezel for enclosing a chassis of the device, the bezel comprising:

a door attached to the bezel, the door comprising:

an inner panel comprising a first downward facing louvre

assembly; and

an outer panel coupled to the inner panel, the outer panel

comprising a second downward facing louvre assembly, wherein the first and second downward facing louvre assembly are to:

prevent a line of sight access to components of the device; and

facilitate airflow from the device, and

wherein the outer panel includes an upward facing louvre; and a bracket disposed on a top portion of the bezel, wherein the bracket and the upward facing louvre of the outer panel form a channel for routing a cable of the device.

11. The system of claim 1, wherein the door is movably coupled to a bottom portion of the assembly via a hinge and wherein the door is movable about the hinge to an open position and a closed position.

12. The system of claim 11, wherein the louvre on the outer panel and the bracket are to route the cable outside the bezel when the door is in the closed position while preventing line of sight access to components of the device.

13. The system of claim 11, comprising a locking assembly disposed on the door to prevent movement of the door to the open position.

14. A method, comprising:

forming a first plurality of downward facing louvres on a first panel;

forming a second plurality of downward facing louvres on a second panel; coupling the first panel to the second panel to form a door of a bezel;

forming an upward facing louvre at a top portion of the second panel;

forming a protrusion from an inner top portion of the bezel extending

downwards, the upward facing louvre and the protrusion forming a cable routing channel for a device cable; and

removably mounting the bezel to a chassis of a device, wherein the first plurality of louvres, the second plurality of louvres, and the protrusion are to:

prevent a line of sight access to components of the device; and direct airflow out of the device.

15. The method of claim 14, comprising:

providing a lock assembly on the door for preventing opening of the door, wherein the door is movable about a hinge.