US20130130528A1 - Dual-cam ejector assembly - Google Patents
Dual-cam ejector assembly Download PDFInfo
- Publication number
- US20130130528A1 US20130130528A1 US13/301,892 US201113301892A US2013130528A1 US 20130130528 A1 US20130130528 A1 US 20130130528A1 US 201113301892 A US201113301892 A US 201113301892A US 2013130528 A1 US2013130528 A1 US 2013130528A1
- Authority
- US
- United States
- Prior art keywords
- ejector
- cam
- rotation
- arm
- axis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1401—Mounting supporting structure in casing or on frame or rack comprising clamping or extracting means
- H05K7/1402—Mounting supporting structure in casing or on frame or rack comprising clamping or extracting means for securing or extracting printed circuit boards
- H05K7/1409—Mounting supporting structure in casing or on frame or rack comprising clamping or extracting means for securing or extracting printed circuit boards by lever-type mechanisms
Definitions
- the present disclosure relates to an ejector assembly for a card, such as a line card.
- a chassis, box housing of a computing system will include one or more slots or sockets that are configured to receive the card. Within these slots is mounting hardware that mechanically mates with the surface of the card, as well as electrical connectors that electrically mate with the electrical edge connectors of the card.
- a card is typically inserted into a slot with a substantial amount of force.
- the electrical/mechanical mating may make it difficult to remove the card from the slot, again requiring the application of a substantial amount of force.
- PC cards e.g., Personal Computer Memory Card International Association (PCMCIA) card or other memory card
- PCMCIA Personal Computer Memory Card International Association
- FIG. 1 is a perspective view of a line card having a dual-cam ejector assembly as described herein.
- FIG. 2A is a perspective view of a front section of the line card having the dual-cam ejector assembly in a closed position.
- FIG. 2B is a perspective view of the front section of the line card having the dual-cam ejector assembly in an open position.
- FIG. 4 is a rear perspective view of the front section of the line card having the dual-cam ejector assembly in an open position.
- FIG. 5 is a bottom perspective view of the dual-cam ejector assembly.
- FIGS. 6A-6C are partially cross-sectional top views of the line card having the dual-cam ejector assembly that illustrate transitioning of the dual-cam ejector assembly from the closed position to the open position.
- FIGS. 7A and 7B are perspective views of the line card having the dual-cam ejector assembly that illustrate actuation of a lock mechanism.
- a dual-cam ejector assembly for a card, such as a line card comprises an elongated ejector arm having its distal end coupled to the line card so as to provide a first axis of rotation for the ejector arm.
- the ejector assembly further comprises an ejector cam coupled to the line card so as to provide a second axis of rotation for the ejector cam.
- the ejector assembly also comprises a cam pin extending from the ejector cam that couples the ejector cam to the ejector arm such that pivoting of the ejector arm around the first axis of rotation causes the ejector cam to pivot around the second axis of rotation.
- Line cards typically include an ejector assembly to assist in the insertion/removal of the line card.
- the ejector assemblies generally include one or two ejector arms mounted to a front panel (i.e., the edge of the card opposite the electrical edge connectors) of the line card by a single pivot point. The pivoting action of these handles provides the force needed to connect/disconnect the edge connectors to/from the electrical connectors in the slot.
- the use of two ejector arms reduces the risk of accidental removal of the line card by operators (since both ejector arms need to be be actuated to remove the line card) and minimizes the force that is required by an operator to disconnect the edge connectors from the backplane.
- a line card generally includes a large number of edge connectors that electrically connect with the backplane of a computing system (through electrical connectors in a card slot). As the number of electrical connections increases, the force that is required to mate/disconnect the line card to/from the backplane also increases.
- the length of the ejector arm is directly correlated to the length of the lever arm. That is, the longer the arm, the more torque that is created through the rotation of the ejector arm, and thus the more force that is created for insertion/removal of the line card. Therefore, in conventional arrangements, the ejectors arms are typically substantially long to enable generation of the needed forces.
- the new ejector assembly makes use of a dual-cam mechanism that is configured to use a dual-pivoting motion to increase the force that is applied through rotation of an ejector arm. That is, the dual-cam mechanism is configured to provide a mechanical advantage that allows a shorter ejector arm to provide insertion/removal forces that exceed the forces applied through conventional arrangements.
- Main body 15 comprises structural support 20 that may be, for example, a support plate, opposing support rails, etc. Disposed or mounted on structural support 20 is a printed circuit board assembly (PCBA) 25 (i.e., a printed circuit board (PCB) having electronic components attached thereto to form a functional assembly). It is to be appreciated that a number of different electronic components may be provided in PCBA 25 .
- PCBA 25 i.e., a printed circuit board (PCB) having electronic components attached thereto to form a functional assembly.
- PCBA 25 printed circuit board assembly
- PCB printed circuit board
- Main body 10 also includes a box 35 that may house one or more other electronic components, and a backplane connector 36 .
- Backplane connector 36 comprises one or more electrical edge connectors that are configured to electrically mate with electrical connectors provided in a receiving slot of the computing system.
- Front section 15 attached to main body 10 , includes a face plate 40 . Attached to front section 15 is, among other elements, a dual-cam ejector assembly 50 . Further details of front section 15 and dual-cam ejector assembly 50 are provided below.
- FIGS. 2A and 2B are perspective views of the front section 15 of line card 5 .
- Front section 15 includes the ejector assembly 50 that comprises an ejector lever arm 55 , referred to herein simply as the ejector arm 55 , and a dual-cam mechanism 60 .
- Dual-cam mechanism 60 comprises an ejector cam 65 , lever arm pivot rivet (not shown in FIGS. 2A and 2B ), and an ejector cam pivot rivet (also not shown in FIGS. 2A and 2B ).
- Front section 15 of line card 5 also includes a lock mechanism 70 that comprises an ejector arm release button 75 (shown in FIG. 2B ) and a spring-loaded protective button cover 80 .
- a lock mechanism 70 that comprises an ejector arm release button 75 (shown in FIG. 2B ) and a spring-loaded protective button cover 80 .
- protective button cover 80 is engaged and covers ejector arm release button 75 .
- the ejector assembly 50 is a closed positioned. That is, as shown, ejector arm 55 is held in a locked positioned adjacent to face plate 40 . However, in FIG. 2B , the ejector assembly 50 is shown in an open position in which the ejector arm 55 is separated from face plate 40 . As described further below, when line card 5 is positioned in a slot of a computing system, rotation of the ejector arm 55 from the closed position of FIG. 2A to the open position of FIG. 2B causes ejector cam 65 to exert a force on a wall of the slot to disconnect the edge connectors in backplane connector 36 from the electrical connectors in the slot.
- FIG. 3 is an exploded view of ejector assembly 50 illustrating the details of dual-cam mechanism 60 and of lock mechanism 70 .
- a first element of ejector assembly 50 is ejector arm 55 .
- Ejector arm 55 is an elongated member that has a proximal end 90 and a distal end 95 .
- Distal end 95 is a substantially planar member having a general cam shape (i.e., the general shape of an irregular oval) and is sometimes referred to herein as distal cam 95 .
- Distal cam 95 has an upper surface 96 and a lower surface 97 .
- Distal cam 95 further comprises a key-hole slot 100 .
- Key-hole slot 100 comprises a circular region (aperture) 105 , referred to as pivot hole 105 , and an elongated region 110 extending from the pivot hole.
- the distal cam 95 of elongated arm 55 is referred to herein as being an element of dual-cam mechanism 60 .
- Ejector cam 65 is a substantially planar member having a general cam shape (i.e., the general shape of an irregular oval).
- Ejector cam 65 comprises a generally circular aperture 115 , referred to as pivot hole 115 , and a curved slot 120 having a generally kidney-bean or fabiform shape.
- Disposed in the outer surface of ejector cam 65 is a jaw 125 .
- jaw 125 is a generally rectangular slot comprising first and second opposing surfaces 125 ( 1 ) and 125 ( 2 ), respectively, and a third surface 125 ( 3 ).
- surfaces 125 ( 1 ), 125 ( 2 ), and 125 ( 3 ) may have different shapes (e.g., flat, concave, convex), curvatures, textures, etc., as desired to perform the operations of jaw 125 described below.
- the generally rectangular shape of jaw 125 includes, for example, shapes in which the first and second surfaces 125 ( 1 ) and 125 ( 2 ) are parallel and shapes in which any of surfaces 125 ( 1 )- 125 ( 3 ) include concavities or convexities.
- Ejector cam 65 further comprises a cam pin 130 extending from the bottom surface 131 of the ejector cam.
- ejector assembly 50 also comprises a coil spring 135 , an ejector cam pivot rivet 140 , an ejector arm pivot rivet 145 , and a lock washer 150 .
- the distal cam (end) 95 of ejector arm 55 is pivotably coupled to front section 15 by ejector arm pivot rivet 145 such that ejector arm 55 rotates around a first axis of rotation.
- ejector arm pivot rivet 145 extends through pivot hole 105 and mates with an opening (not shown in FIG. 3 ) in front section 15 .
- Lock washer 150 may be positioned around ejector arm pivot rivet 145 to retain the distal cam 95 , and the rest of ejector arm 55 , in position.
- ejector arm 55 rotates around the ejector arm pivot rivet 145 , and the ejector arm pivot rivet 145 provides the first axis of rotation for the ejector arm.
- An electromagnetic interference (EMI) shielding gasket 165 may also be disposed about a portion of ejector arm pivot rivet 145 and a portion of ejector cam 65 .
- ejector cam 65 is disposed over (on top of) distal cam 95 .
- ejector arm pivot rivet 145 extends through curved slot 120 , but slot 120 is shaped to allow substantially free movement of the ejector arm 55 around the ejector arm pivot rivet 145 .
- the cam pin 130 extends from the lower surface 131 of ejector cam 65 into elongated region 100 of key-hole slot 100 to couple the ejector cam 65 to ejector arm 55 .
- Ejector cam pivot rivet 140 comprises an upper portion 180 extending between flange 175 and a cap flange 185 . When the ejector assembly 50 is assembled, coil spring 135 is disposed around this upper portion 180 .
- FIG. 3 also shows an exploded view of lock mechanism 70 .
- lock mechanism 70 comprises the ejector release button 75 and the protective button cover 80 .
- Lock mechanism 70 also comprises a coil spring 150 and a receiver 155 having opposing slide rails 160 ( 1 ) and 160 ( 2 ).
- protective button cover 80 is configured to engage and slide with, and slide along, slide rails 160 ( 1 ) and 160 ( 2 ).
- Coil spring 150 is disposed inside receiver 155 and is configured to bias protective button cover 80 downwards so as to cover the ejector release button 75 .
- the line card 5 of FIG. 3 is configured to be inserted into a slot of a computing system.
- the ejector assembly 50 is in the closed position of FIG. 2A .
- lock mechanism 70 retains ejector arm 55 adjacent to face plate 40 .
- a pin extends through aperture 195 in proximal end 90 of the ejector arm 55 .
- the pin is held in place by ejector release button 75 .
- the protective button cover 80 in lock mechanism 70 effectively eliminates the potential accidental release of the line card 5 by covering ejector release button 75 .
- the operator When an operator desires to remove line card 5 from the slot, the operator first releases the ejector arm 55 from lock mechanism 70 . That is, the operator slides protective button cover 80 upwards (against coil spring 150 ) along slide rails 160 ( 1 ) and 160 ( 2 ) to expose ejector release button 75 . The operator then presses ejector release button 75 so that the pin is removed from aperture 195 .
- Coil spring 135 is disposed around ejector cam pivot rivet 140 and is configured to bias the ejector arm 55 away from the face plate 40 .
- the bias provided by coil spring 135 causes ejector arm 55 to rotate around ejector arm pivot rivet 145 (i.e., around the first axis of rotation) such that proximal end 90 moves a distance away from the face plate 40 .
- the distance that proximal end 90 moves, and the magnitude (angular degree) of rotation around the first axis of rotation may be based, at least in part, on the strength of coil spring 135 and the resulting bias placed on ejector arm 55 .
- the operator places a force on proximal end 90 of the ejector arm 55 to cause the ejector assembly 50 to take the open position of FIG. 2B . More specifically, the operator causes ejector arm 55 to continue its rotation around the first axis of rotation provided by ejector arm pivot rivet 145 .
- cam pin 130 extends from ejector cam 65 into elongated region 110 of key-hole slot 100 . Therefore, as ejector arm 55 rotates, cam pin 130 engages (contacts) the sides of elongate region 110 and causes ejector cam 65 to rotate around the second axis of rotation provided by ejector cam pivot rivet 140 .
- the rotation of ejector cam 65 causes the jaw 125 to exert a mechanical force on the computing system so as to disconnect the edge connectors in backplane connector 36 ( FIG. 1 ) from the electrical connectors in the slot of the computing system. More particularly, the rotation of ejector cam 65 causes the first surface (edge) 125 ( 1 ) of jaw 125 to engage a wall of the slot and place a force on the wall that is generally in the opposite direction of the rotation of ejector arm 55 .
- the force applied by jaw 125 is a multiple of the torque that would be applied through simple rotation of a single-pivot ejector arm. More specifically, the ejector arm 55 and ejector cam cooperate to provide an increased mechanical force (i.e., a mechanical advantage).
- ejector assembly 50 is referred to herein as including dual-cam mechanism 60 .
- the example arrangement described above is considered to include a dual-cam mechanism because there are two axes of rotation that impact the force output by the ejector cam jaw 125 .
- the distal cam 95 of ejector arm 55 operates as, and performs the general functionality of, a first cam
- ejector cam 65 operates as, and performs the general functionality of, a second cam.
- the dual-cam mechanism 60 is a relatively compact design that allows for higher output forces without the need for increasing the length of the ejector arm. Furthermore, because only one ejector arm is used, rather than two ejector arms (as in certain conventional arrangements), operators only need to use one arm, allowing for easier and faster card insertion/removal.
- an ejector assembly as described herein, such as ejector assembly 50 is configured to fit into a 4.5 inch wide front section of a line card (i.e., the length of the ejector arm 55 is approximately less than or equal to 4.5 inches).
- the mechanical insertion/removal force would be the same or greater than a traditional single-pivot ejector assembly having a lever arm that is at least 9 inches long.
- FIG. 4 is perspective view of the back of front section 15 of line card 5 showing ejector assembly 50 in an assembled arrangement. As shown, coil spring 135 is disposed around ejector cam pivot rivet 140 behind face plate 40 .
- FIG. 5 is a bottom view of ejector assembly 50 in an assembled arrangement. For ease of illustration, the front section 15 of line card 5 has been omitted from FIG. 5 .
- distal cam 95 of ejector arm 55 is positioned under ejector cam 65 . More specifically, lower surface 131 of ejector cam 65 is positioned abutting the upper surface 96 of distal cam 95 . Additionally, lower portion 170 of ejector cam pivot rivet 140 extends through pivot hole 115 . Similarly, ejector arm pivot rivet 145 , and more specifically a lower portion 205 , extends through pivot hole 105 of key-hole slot 100 .
- cam pin 130 protrudes from lower surface 131 of ejector cam 65 and extends through elongate region 110 of key-hole slot 100 . Therefore, as noted above with reference to FIG. 3 , when ejector arm 55 rotates around ejector arm pivot rivet 145 (i.e., the first axis of rotation), cam pin 130 contacts a side of elongate region 110 and transfers a rotational force to ejector cam 65 that causes the ejector cam to rotate around the ejector cam pivot rivet 140 (i.e., the second axis of rotation). In other words, the transferred force (via cam pin 130 ) results in simultaneous rotation of the ejector cam 65 and ejector arm 55 (i.e., dual-pivoting rotation of dual-cam mechanism 60 and ejector assembly 50 in general).
- FIG. 5 further illustrates the details of jaw 125 of ejector cam 65 .
- jaw 125 is a generally rectangular shaped slot in the outer surface of ejector cam 65 having three surfaces 125 ( 1 ), 125 ( 2 ), and 125 ( 3 ) that may each have different shapes/configurations.
- first surface 125 ( 1 ) and second 125 ( 2 ) each have a general concave shape.
- First surface 125 ( 1 ) comprises a continuous curve to form the concave shape, while second surface 125 ( 2 ) has an indent formed by one or more sharp turns.
- FIGS. 6A-6C are a series of top, cross-sectional views of front section 15 of line card 5 .
- the top of front section 15 has been omitted to illustrate the operation of ejector assembly 50 .
- these views shown line card 5 inserted into a slot 210 of a computing system.
- Surrounding slot 210 is a wall 220 .
- ejector assembly 50 is in a locked position and line card 5 is fully inserted into slot 210 . That is, the edge connectors in backplane connector 36 ( FIG. 1 ) are electrically mated with electrical connectors in slot 210 . As shown in FIG. 6A , when in this locked positioned, ejector assembly 50 is mated with wall 220 of slot 210 . More specifically, wall 220 comprises a slot or opening 225 that is configured to receive a portion 230 of ejector cam 65 , namely a portion 230 that is proximate to second surface 125 ( 2 ) of jaw 125 .
- second surface 125 ( 2 ) of jaw 125 engages an edge 240 of the opening.
- second surface 125 ( 2 ) is configured to exert a force on edge 240 .
- face plate 40 of line card 5 may positioned a distance beyond the outer surface of wall 220 . That is, in certain arrangements, when line card 5 is fully inserted into slot 210 , the front of the card may extend from the slot 110 a certain distance.
- FIG. 6A shows face plate 40 starting a distance 0.041 inches in front of wall 220 .
- FIGS. 6B and 6C will make reference to the distance that face plate 40 is in front of wall 220 to illustrate how rotation of ejector arm 55 affects the position of line card 5 relative to slot 210 . It is to be appreciated that these distances, and any referenced rotational angles, are merely illustrative of one specific example.
- an operator has unlocked ejector arm 55 by actuating lock mechanism 70 , as described elsewhere herein. That is, the operator slid protective button cover 80 upwards to expose ejector release button 75 , and then the operator pressed the ejector release button 75 .
- pressing the ejector release button 75 causes ejector arm 55 to rotate around ejector arm pivot rivet 145 (i.e., the first axis of rotation).
- ejector arm pivot rivet 145 i.e., the first axis of rotation
- ejector arm 55 rotates around the first axis of rotation by approximately 10.3 degrees, and the proximal end 90 of ejector arm is spaced from wall 220 by approximately 0.838 inches. Furthermore, the release of ejector arm 55 causes first surface 125 ( 1 ) of jaw 125 to engage (contact) wall 220 . In this position, line card 5 has not moved from slot 210 . That is, face plate 40 is still approximately 0.041 inches in front of wall 220 .
- the operator rotates ejector arm 55 around the first axis of rotation provided by ejector arm pivot rivet 145 .
- This rotation is show by arrow 250 .
- the operator rotates ejector arm 55 around the first axis of rotation provided by ejector arm pivot rivet 145 by 27.8 degrees from the initial closed position, thereby causing distal end 90 to be approximately 1.907 inches from the face plate 40 .
- the rotation of ejector arm 55 causes rotation of ejector cam 65 (via the transfer of force through cam 130 ).
- the general direction of the rotation of ejector cam 65 is shown by arrow 255 .
- the dual-rotation of ejector arm 55 and ejector cam 65 causes first surface 125 ( 1 ) to exert a force on wall 220 .
- the direction of this force is represented by arrow 260 .
- the force on wall 220 causes line card 5 to move out of slot 210 .
- line card 5 has moved out of slot 210 by approximately 0.1 inches from the fully inserted position and, as a result, the electrical connectors in backplane connector 36 are disengaged from the electrical connectors in slot 210 .
- FIGS. 6A-6C illustrate the use of ejector assembly 50 to remove line card 5 from slot 210 .
- ejector assembly 50 may also be used to insert line card 5 into slot 210 and, more particularly, to provide sufficient force to mate the electrical connectors in backplane connector 36 with the electrical connectors provided in slot 210 .
- ejector arm 55 is rotated around the first axis of rotation provided by ejector arm pivot rivet 145 in a direction opposite to arrow 250 ( FIG. 6C ).
- the rotation of ejector arm 55 is transferred to ejector cam 65 via cam pin 130 , thereby causing rotation of ejector cam 65 around ejector cam pivot rivet 140 in the direction opposite to arrow 255 ( FIG. 6C ).
- portion 230 of the ejector cam 65 enters opening 225 in wall 220 such that the second surface 125 ( 2 ) engages (contacts) edge 240 of the opening 225 .
- Second surface 125 ( 2 ) is configured to come in contact with edge 240 while ejector arm 55 is spaced from face plate 40 (i.e., while there is still room for ejector arm 55 and ejector cam 65 to rotate).
- second surface 125 ( 2 ) exerts a force on edge 240 substantially in the direction of face plate 40 (i.e., in the opposite direction of arrow 260 of FIG. 6C ).
- This force causes line card 5 to move in an opposite direction (i.e., into slot 210 ) such that the electrical connectors in backplane connector 36 mate with the electrical connectors provided in slot 210 .
- FIG. 2A illustrates the ejector assembly 50 in a closed positioned. More specifically, in FIG. 2A , the lock mechanism 70 is engaged to prevent accidental release of the ejector arm 50 .
- FIG. 7A illustrates a first step in the actuation of lock mechanism 70 and the release of ejector arm 55 . More specifically, in FIG. 7A , a user slides protective button cover 80 upwards to expose ejector release button 75 . The direction of movement of protective button cover 80 is generally shown by arrow 300 . As shown in FIG. 7A , the ejector release button 75 is accessible and may be pressed by a user.
- the next step in actuation of lock mechanism 70 includes pressing ejector release button 75 .
- pressing the ejector release button 75 causes ejector arm 55 to rotate around ejector arm pivot rivet 145 (i.e., the first axis of rotation).
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
Description
- The present disclosure relates to an ejector assembly for a card, such as a line card.
- Electrical components are typically mounted onto a printed circuit board to form a “card” for insertion into the housing of a computing system or other electronic device. These cards have electrical edge connectors which enable the electrical components on the card to be electrically connected to components in the computing system. More specifically, a chassis, box housing of a computing system will include one or more slots or sockets that are configured to receive the card. Within these slots is mounting hardware that mechanically mates with the surface of the card, as well as electrical connectors that electrically mate with the electrical edge connectors of the card. In order to ensure proper mechanical/electrical mating, a card is typically inserted into a slot with a substantial amount of force. Similarly, the electrical/mechanical mating may make it difficult to remove the card from the slot, again requiring the application of a substantial amount of force.
- There are a number of different types of cards that are configured to be inserted into a slot of a computing system or other electronic device. These card include, but are not limited to, line cards, Personal Computer (PC) cards (e.g., Personal Computer Memory Card International Association (PCMCIA) card or other memory card), different types of expansion cards, etc. These cards generally provide some type of added functionality to the computing system and are inserted into, or removed from, the slot of the computing system as desired.
-
FIG. 1 is a perspective view of a line card having a dual-cam ejector assembly as described herein. -
FIG. 2A is a perspective view of a front section of the line card having the dual-cam ejector assembly in a closed position. -
FIG. 2B is a perspective view of the front section of the line card having the dual-cam ejector assembly in an open position. -
FIG. 3 is an exploded view of the dual-cam ejector assembly. -
FIG. 4 is a rear perspective view of the front section of the line card having the dual-cam ejector assembly in an open position. -
FIG. 5 is a bottom perspective view of the dual-cam ejector assembly. -
FIGS. 6A-6C are partially cross-sectional top views of the line card having the dual-cam ejector assembly that illustrate transitioning of the dual-cam ejector assembly from the closed position to the open position. -
FIGS. 7A and 7B are perspective views of the line card having the dual-cam ejector assembly that illustrate actuation of a lock mechanism. - Overview
- A dual-cam ejector assembly for a card, such as a line card, is provided. The ejector assembly comprises an elongated ejector arm having its distal end coupled to the line card so as to provide a first axis of rotation for the ejector arm. The ejector assembly further comprises an ejector cam coupled to the line card so as to provide a second axis of rotation for the ejector cam. The ejector assembly also comprises a cam pin extending from the ejector cam that couples the ejector cam to the ejector arm such that pivoting of the ejector arm around the first axis of rotation causes the ejector cam to pivot around the second axis of rotation.
- There are a number of different types of cards that are configured to be inserted into a slot of a computing system housing or other electronic device (e.g., line cards, PC cards, etc.) For ease of references, examples will be described herein with reference to a line card configured to be inserted into a slot of a computing system, such as a slot in a computing system rack.
- Line cards typically include an ejector assembly to assist in the insertion/removal of the line card. The ejector assemblies generally include one or two ejector arms mounted to a front panel (i.e., the edge of the card opposite the electrical edge connectors) of the line card by a single pivot point. The pivoting action of these handles provides the force needed to connect/disconnect the edge connectors to/from the electrical connectors in the slot. The use of two ejector arms reduces the risk of accidental removal of the line card by operators (since both ejector arms need to be be actuated to remove the line card) and minimizes the force that is required by an operator to disconnect the edge connectors from the backplane.
- A line card generally includes a large number of edge connectors that electrically connect with the backplane of a computing system (through electrical connectors in a card slot). As the number of electrical connections increases, the force that is required to mate/disconnect the line card to/from the backplane also increases. In conventional arrangements, the length of the ejector arm is directly correlated to the length of the lever arm. That is, the longer the arm, the more torque that is created through the rotation of the ejector arm, and thus the more force that is created for insertion/removal of the line card. Therefore, in conventional arrangements, the ejectors arms are typically substantially long to enable generation of the needed forces.
- While the number of electrical connections between a line card and a computing system has been increasing, the size of line cards, and the size of computing systems in general, has been decreasing. The need for the increased insertion/removal forces, coupled with these space limitations, has reduced the effectiveness and ability to use conventional ejector assemblies. Examples described herein are directed to a new ejector assembly in which the force that may be applied is not limited by the length of the ejector arm. Rather, as detailed elsewhere herein, the new ejector assembly makes use of a dual-cam mechanism that is configured to use a dual-pivoting motion to increase the force that is applied through rotation of an ejector arm. That is, the dual-cam mechanism is configured to provide a mechanical advantage that allows a shorter ejector arm to provide insertion/removal forces that exceed the forces applied through conventional arrangements.
-
FIG. 1 is a perspective view of anexample line card 5 that is configured to be inserted into a slot of a computing system (not shown inFIG. 1 ).Line card 5 includes amain body 10 attached to afront section 15. -
Main body 15 comprisesstructural support 20 that may be, for example, a support plate, opposing support rails, etc. Disposed or mounted onstructural support 20 is a printed circuit board assembly (PCBA) 25 (i.e., a printed circuit board (PCB) having electronic components attached thereto to form a functional assembly). It is to be appreciated that a number of different electronic components may be provided in PCBA 25. One example electronic component shown inFIG. 1 is aheat sink 30. -
Main body 10 also includes abox 35 that may house one or more other electronic components, and abackplane connector 36.Backplane connector 36 comprises one or more electrical edge connectors that are configured to electrically mate with electrical connectors provided in a receiving slot of the computing system. -
Front section 15, attached tomain body 10, includes aface plate 40. Attached tofront section 15 is, among other elements, a dual-cam ejector assembly 50. Further details offront section 15 and dual-cam ejector assembly 50 are provided below. -
FIGS. 2A and 2B are perspective views of thefront section 15 ofline card 5.Front section 15 includes theejector assembly 50 that comprises anejector lever arm 55, referred to herein simply as theejector arm 55, and a dual-cam mechanism 60. Dual-cam mechanism 60 comprises anejector cam 65, lever arm pivot rivet (not shown inFIGS. 2A and 2B ), and an ejector cam pivot rivet (also not shown inFIGS. 2A and 2B ). -
Front section 15 ofline card 5 also includes alock mechanism 70 that comprises an ejector arm release button 75 (shown inFIG. 2B ) and a spring-loadedprotective button cover 80. In the example ofFIG. 2A ,protective button cover 80 is engaged and covers ejectorarm release button 75. - In
FIG. 2A , theejector assembly 50 is a closed positioned. That is, as shown,ejector arm 55 is held in a locked positioned adjacent to faceplate 40. However, inFIG. 2B , theejector assembly 50 is shown in an open position in which theejector arm 55 is separated fromface plate 40. As described further below, whenline card 5 is positioned in a slot of a computing system, rotation of theejector arm 55 from the closed position ofFIG. 2A to the open position ofFIG. 2B causesejector cam 65 to exert a force on a wall of the slot to disconnect the edge connectors inbackplane connector 36 from the electrical connectors in the slot. -
FIG. 3 is an exploded view ofejector assembly 50 illustrating the details of dual-cam mechanism 60 and oflock mechanism 70. As shown, a first element ofejector assembly 50 isejector arm 55.Ejector arm 55 is an elongated member that has aproximal end 90 and adistal end 95.Distal end 95 is a substantially planar member having a general cam shape (i.e., the general shape of an irregular oval) and is sometimes referred to herein asdistal cam 95.Distal cam 95 has anupper surface 96 and alower surface 97.Distal cam 95 further comprises a key-hole slot 100. Key-hole slot 100 comprises a circular region (aperture) 105, referred to aspivot hole 105, and anelongated region 110 extending from the pivot hole. Thedistal cam 95 ofelongated arm 55 is referred to herein as being an element of dual-cam mechanism 60. - Another element of dual-
cam mechanism 60 is ejectorcam 65.Ejector cam 65 is a substantially planar member having a general cam shape (i.e., the general shape of an irregular oval).Ejector cam 65 comprises a generallycircular aperture 115, referred to aspivot hole 115, and acurved slot 120 having a generally kidney-bean or fabiform shape. Disposed in the outer surface ofejector cam 65 is ajaw 125. In this example,jaw 125 is a generally rectangular slot comprising first and second opposing surfaces 125(1) and 125(2), respectively, and a third surface 125(3). It is to be appreciated that surfaces 125(1), 125(2), and 125(3) may have different shapes (e.g., flat, concave, convex), curvatures, textures, etc., as desired to perform the operations ofjaw 125 described below. As such, the generally rectangular shape ofjaw 125 includes, for example, shapes in which the first and second surfaces 125(1) and 125(2) are parallel and shapes in which any of surfaces 125(1)-125(3) include concavities or convexities.Ejector cam 65 further comprises acam pin 130 extending from thebottom surface 131 of the ejector cam. - As shown in
FIG. 3 ,ejector assembly 50 also comprises acoil spring 135, an ejectorcam pivot rivet 140, an ejectorarm pivot rivet 145, and alock washer 150. - In the example of
FIG. 3 , the distal cam (end) 95 ofejector arm 55 is pivotably coupled tofront section 15 by ejectorarm pivot rivet 145 such thatejector arm 55 rotates around a first axis of rotation. When theejector assembly 50 is assembled, ejectorarm pivot rivet 145 extends throughpivot hole 105 and mates with an opening (not shown inFIG. 3 ) infront section 15.Lock washer 150 may be positioned around ejectorarm pivot rivet 145 to retain thedistal cam 95, and the rest ofejector arm 55, in position. As such,ejector arm 55 rotates around the ejectorarm pivot rivet 145, and the ejectorarm pivot rivet 145 provides the first axis of rotation for the ejector arm. An electromagnetic interference (EMI) shieldinggasket 165 may also be disposed about a portion of ejectorarm pivot rivet 145 and a portion ofejector cam 65. - The
ejector cam 65 is pivotably coupled tofront section 15 by ejectorcam pivot rivet 140 so as to rotate around a second axis of rotation. When theejector assembly 50 is assembled, alower portion 170 of ejectorcam pivot rivet 140 extends throughpivot hole 115 to mate with an opening (not shown inFIG. 3 ) infront section 15 such thatflange 175 abuts theupper surface 132 of theejector cam 65. As such,ejector cam 65 rotates around the ejectorcam pivot rivet 140, and the ejectorcam pivot rivet 140 provides the second axis of rotation for the ejector cam. - Additionally, when ejector
assembly 50 is assembled,ejector cam 65 is disposed over (on top of)distal cam 95. In this assembled position, ejectorarm pivot rivet 145 extends throughcurved slot 120, butslot 120 is shaped to allow substantially free movement of theejector arm 55 around the ejectorarm pivot rivet 145. Furthermore, thecam pin 130 extends from thelower surface 131 ofejector cam 65 intoelongated region 100 of key-hole slot 100 to couple theejector cam 65 toejector arm 55. - Ejector
cam pivot rivet 140 comprises anupper portion 180 extending betweenflange 175 and acap flange 185. When theejector assembly 50 is assembled,coil spring 135 is disposed around thisupper portion 180. -
FIG. 3 also shows an exploded view oflock mechanism 70. As noted above,lock mechanism 70 comprises theejector release button 75 and theprotective button cover 80.Lock mechanism 70 also comprises acoil spring 150 and areceiver 155 having opposing slide rails 160(1) and 160(2). Whenlock mechanism 70 is assembled,protective button cover 80 is configured to engage and slide with, and slide along, slide rails 160(1) and 160(2).Coil spring 150 is disposed insidereceiver 155 and is configured to biasprotective button cover 80 downwards so as to cover theejector release button 75. - As noted above, the
line card 5 ofFIG. 3 is configured to be inserted into a slot of a computing system. When theline card 5 is fully inserted into such a slot, theejector assembly 50 is in the closed position ofFIG. 2A . While in the closed position,lock mechanism 70 retainsejector arm 55 adjacent to faceplate 40. More specifically, a pin extends throughaperture 195 inproximal end 90 of theejector arm 55. The pin is held in place by ejectorrelease button 75. Theprotective button cover 80 inlock mechanism 70 effectively eliminates the potential accidental release of theline card 5 by coveringejector release button 75. - When an operator desires to remove
line card 5 from the slot, the operator first releases theejector arm 55 fromlock mechanism 70. That is, the operator slidesprotective button cover 80 upwards (against coil spring 150) along slide rails 160(1) and 160(2) to exposeejector release button 75. The operator then pressesejector release button 75 so that the pin is removed fromaperture 195. -
Coil spring 135 is disposed around ejectorcam pivot rivet 140 and is configured to bias theejector arm 55 away from theface plate 40. As such, when theejector arm 55 is released bylock mechanism 70, the bias provided bycoil spring 135 causesejector arm 55 to rotate around ejector arm pivot rivet 145 (i.e., around the first axis of rotation) such thatproximal end 90 moves a distance away from theface plate 40. The distance thatproximal end 90 moves, and the magnitude (angular degree) of rotation around the first axis of rotation, may be based, at least in part, on the strength ofcoil spring 135 and the resulting bias placed onejector arm 55. - In order to continue removal of
line card 5 from the slot, the operator places a force onproximal end 90 of theejector arm 55 to cause theejector assembly 50 to take the open position ofFIG. 2B . More specifically, the operator causesejector arm 55 to continue its rotation around the first axis of rotation provided by ejectorarm pivot rivet 145. As noted above,cam pin 130 extends fromejector cam 65 intoelongated region 110 of key-hole slot 100. Therefore, asejector arm 55 rotates,cam pin 130 engages (contacts) the sides ofelongate region 110 and causesejector cam 65 to rotate around the second axis of rotation provided by ejectorcam pivot rivet 140. In other words, there is a transfer of force viacam pin 130 fromejector arm 55 toejector cam 65, resulting in simultaneous rotation of the dual-cam mechanism 60 (andejector assembly 50 in general) around two axes of rotation (i.e., rotation ofejector arm 55 around the first axis of rotation provided by ejectorarm pivot rivet 145 and rotation ofejector cam 65 around the second axis of rotation provided by ejector cam pivot rivet 140). - As detailed further below, the rotation of
ejector cam 65 causes thejaw 125 to exert a mechanical force on the computing system so as to disconnect the edge connectors in backplane connector 36 (FIG. 1 ) from the electrical connectors in the slot of the computing system. More particularly, the rotation ofejector cam 65 causes the first surface (edge) 125(1) ofjaw 125 to engage a wall of the slot and place a force on the wall that is generally in the opposite direction of the rotation ofejector arm 55. - As a result of the dual-rotation (simultaneous rotation around two axes), the force applied by
jaw 125 is a multiple of the torque that would be applied through simple rotation of a single-pivot ejector arm. More specifically, theejector arm 55 and ejector cam cooperate to provide an increased mechanical force (i.e., a mechanical advantage). - As noted above,
ejector assembly 50 is referred to herein as including dual-cam mechanism 60. The example arrangement described above is considered to include a dual-cam mechanism because there are two axes of rotation that impact the force output by theejector cam jaw 125. In operation, thedistal cam 95 ofejector arm 55 operates as, and performs the general functionality of, a first cam, whileejector cam 65 operates as, and performs the general functionality of, a second cam. - The dual-
cam mechanism 60 is a relatively compact design that allows for higher output forces without the need for increasing the length of the ejector arm. Furthermore, because only one ejector arm is used, rather than two ejector arms (as in certain conventional arrangements), operators only need to use one arm, allowing for easier and faster card insertion/removal. In one specific example, an ejector assembly as described herein, such asejector assembly 50, is configured to fit into a 4.5 inch wide front section of a line card (i.e., the length of theejector arm 55 is approximately less than or equal to 4.5 inches). In this specific example, due to the use of the dual-cam mechanism 60, the mechanical insertion/removal force would be the same or greater than a traditional single-pivot ejector assembly having a lever arm that is at least 9 inches long. -
FIG. 4 is perspective view of the back offront section 15 ofline card 5 showingejector assembly 50 in an assembled arrangement. As shown,coil spring 135 is disposed around ejectorcam pivot rivet 140 behindface plate 40. -
FIG. 5 is a bottom view ofejector assembly 50 in an assembled arrangement. For ease of illustration, thefront section 15 ofline card 5 has been omitted fromFIG. 5 . - In the assembled arrangement of
FIG. 5 , thedistal cam 95 ofejector arm 55 is positioned underejector cam 65. More specifically,lower surface 131 ofejector cam 65 is positioned abutting theupper surface 96 ofdistal cam 95. Additionally,lower portion 170 of ejectorcam pivot rivet 140 extends throughpivot hole 115. Similarly, ejectorarm pivot rivet 145, and more specifically alower portion 205, extends throughpivot hole 105 of key-hole slot 100. - As shown in
FIG. 5 ,cam pin 130 protrudes fromlower surface 131 ofejector cam 65 and extends throughelongate region 110 of key-hole slot 100. Therefore, as noted above with reference toFIG. 3 , whenejector arm 55 rotates around ejector arm pivot rivet 145 (i.e., the first axis of rotation),cam pin 130 contacts a side ofelongate region 110 and transfers a rotational force toejector cam 65 that causes the ejector cam to rotate around the ejector cam pivot rivet 140 (i.e., the second axis of rotation). In other words, the transferred force (via cam pin 130) results in simultaneous rotation of theejector cam 65 and ejector arm 55 (i.e., dual-pivoting rotation of dual-cam mechanism 60 andejector assembly 50 in general). -
FIG. 5 further illustrates the details ofjaw 125 ofejector cam 65. As previously noted,jaw 125 is a generally rectangular shaped slot in the outer surface ofejector cam 65 having three surfaces 125(1), 125(2), and 125(3) that may each have different shapes/configurations. In the example ofFIG. 5 , first surface 125(1) and second 125(2) each have a general concave shape. First surface 125(1) comprises a continuous curve to form the concave shape, while second surface 125(2) has an indent formed by one or more sharp turns. -
FIGS. 6A-6C are a series of top, cross-sectional views offront section 15 ofline card 5. In these views the top offront section 15 has been omitted to illustrate the operation ofejector assembly 50. Additionally, these views shownline card 5 inserted into aslot 210 of a computing system. Surroundingslot 210 is awall 220. - In
FIG. 6A ,ejector assembly 50 is in a locked position andline card 5 is fully inserted intoslot 210. That is, the edge connectors in backplane connector 36 (FIG. 1 ) are electrically mated with electrical connectors inslot 210. As shown inFIG. 6A , when in this locked positioned,ejector assembly 50 is mated withwall 220 ofslot 210. More specifically,wall 220 comprises a slot or opening 225 that is configured to receive aportion 230 ofejector cam 65, namely aportion 230 that is proximate to second surface 125(2) ofjaw 125. Whenportion 230 is inserted intoopening 225, second surface 125(2) ofjaw 125 engages anedge 240 of the opening. As noted further below, during insertion ofline card 5 intoslot 210, second surface 125(2) is configured to exert a force onedge 240. - When ejector
assembly 50 is in the locked position ofFIG. 6A ,face plate 40 ofline card 5 may positioned a distance beyond the outer surface ofwall 220. That is, in certain arrangements, whenline card 5 is fully inserted intoslot 210, the front of the card may extend from the slot 110 a certain distance. For illustration purposes only, the example ofFIG. 6A showsface plate 40 starting a distance 0.041 inches in front ofwall 220. The following examples ofFIGS. 6B and 6C will make reference to the distance that faceplate 40 is in front ofwall 220 to illustrate how rotation ofejector arm 55 affects the position ofline card 5 relative to slot 210. It is to be appreciated that these distances, and any referenced rotational angles, are merely illustrative of one specific example. - In the arrangement of
FIG. 6B , an operator has unlockedejector arm 55 by actuatinglock mechanism 70, as described elsewhere herein. That is, the operator slidprotective button cover 80 upwards to exposeejector release button 75, and then the operator pressed theejector release button 75. As noted above, as a result of the bias onejector arm 55 bycoil spring 135, pressing theejector release button 75 causes ejectorarm 55 to rotate around ejector arm pivot rivet 145 (i.e., the first axis of rotation). In the example ofFIG. 6B ,ejector arm 55 rotates around the first axis of rotation by approximately 10.3 degrees, and theproximal end 90 of ejector arm is spaced fromwall 220 by approximately 0.838 inches. Furthermore, the release ofejector arm 55 causes first surface 125(1) ofjaw 125 to engage (contact)wall 220. In this position,line card 5 has not moved fromslot 210. That is,face plate 40 is still approximately 0.041 inches in front ofwall 220. - In the arrangement of
FIG. 6C , the operator rotatesejector arm 55 around the first axis of rotation provided by ejectorarm pivot rivet 145. This rotation is show byarrow 250. As shown, the operator rotatesejector arm 55 around the first axis of rotation provided by ejectorarm pivot rivet 145 by 27.8 degrees from the initial closed position, thereby causingdistal end 90 to be approximately 1.907 inches from theface plate 40. As previously noted, the rotation ofejector arm 55 causes rotation of ejector cam 65 (via the transfer of force through cam 130). The general direction of the rotation ofejector cam 65 is shown byarrow 255. The dual-rotation ofejector arm 55 andejector cam 65 causes first surface 125(1) to exert a force onwall 220. The direction of this force is represented byarrow 260. The force onwall 220 causesline card 5 to move out ofslot 210. As shown inFIG. 6C , after ejectorarm 55 rotates the 27.8 degrees,line card 5 has moved out ofslot 210 by approximately 0.1 inches from the fully inserted position and, as a result, the electrical connectors inbackplane connector 36 are disengaged from the electrical connectors inslot 210. - As noted above,
FIGS. 6A-6C illustrate the use ofejector assembly 50 to removeline card 5 fromslot 210. However, as noted elsewhere herein,ejector assembly 50 may also be used to insertline card 5 intoslot 210 and, more particularly, to provide sufficient force to mate the electrical connectors inbackplane connector 36 with the electrical connectors provided inslot 210. During such insertion,ejector arm 55 is rotated around the first axis of rotation provided by ejectorarm pivot rivet 145 in a direction opposite to arrow 250 (FIG. 6C ). The rotation ofejector arm 55 is transferred toejector cam 65 viacam pin 130, thereby causing rotation ofejector cam 65 around ejectorcam pivot rivet 140 in the direction opposite to arrow 255 (FIG. 6C ). Asejector cam 65 rotates,portion 230 of theejector cam 65 enters opening 225 inwall 220 such that the second surface 125(2) engages (contacts)edge 240 of theopening 225. Second surface 125(2) is configured to come in contact withedge 240 while ejectorarm 55 is spaced from face plate 40 (i.e., while there is still room forejector arm 55 andejector cam 65 to rotate). As such, as the dual-rotation ofejector arm 55 andejector cam 65 continues, second surface 125(2) exerts a force onedge 240 substantially in the direction of face plate 40 (i.e., in the opposite direction ofarrow 260 ofFIG. 6C ). This force causesline card 5 to move in an opposite direction (i.e., into slot 210) such that the electrical connectors inbackplane connector 36 mate with the electrical connectors provided inslot 210. - As noted above,
FIG. 2A illustrates theejector assembly 50 in a closed positioned. More specifically, inFIG. 2A , thelock mechanism 70 is engaged to prevent accidental release of theejector arm 50.FIG. 7A illustrates a first step in the actuation oflock mechanism 70 and the release ofejector arm 55. More specifically, inFIG. 7A , a user slidesprotective button cover 80 upwards to exposeejector release button 75. The direction of movement ofprotective button cover 80 is generally shown byarrow 300. As shown inFIG. 7A , theejector release button 75 is accessible and may be pressed by a user. - The next step in actuation of
lock mechanism 70, as shown inFIG. 7B , includes pressingejector release button 75. As noted above, as a result of the bias onejector arm 55 bycoil spring 135, pressing theejector release button 75 causes ejectorarm 55 to rotate around ejector arm pivot rivet 145 (i.e., the first axis of rotation). - The above description is intended by way of example only.
Claims (24)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/301,892 US8435057B1 (en) | 2011-11-22 | 2011-11-22 | Dual-cam ejector assembly |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/301,892 US8435057B1 (en) | 2011-11-22 | 2011-11-22 | Dual-cam ejector assembly |
Publications (2)
Publication Number | Publication Date |
---|---|
US8435057B1 US8435057B1 (en) | 2013-05-07 |
US20130130528A1 true US20130130528A1 (en) | 2013-05-23 |
Family
ID=48183192
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/301,892 Expired - Fee Related US8435057B1 (en) | 2011-11-22 | 2011-11-22 | Dual-cam ejector assembly |
Country Status (1)
Country | Link |
---|---|
US (1) | US8435057B1 (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140118972A1 (en) * | 2012-10-31 | 2014-05-01 | Fujitsu Limited | Electronic circuit unit and communication device |
US20150004818A1 (en) * | 2013-06-27 | 2015-01-01 | Chiun Mai Communication Systems, Inc. | Chip card ejecting mechanism |
US20150076982A1 (en) * | 2013-09-14 | 2015-03-19 | Francis Degay | Apparatus for locking a component drawer into a chassis |
US20150156902A1 (en) * | 2013-12-02 | 2015-06-04 | Dell Products L.P. | Multi-stage information handling resource release latch for use in a modular information handling system chassis |
US20180168061A1 (en) * | 2016-12-08 | 2018-06-14 | Southco, Inc. | Ejector latch assembly and system for securing a board within a frame |
US20190075666A1 (en) * | 2017-09-06 | 2019-03-07 | Facebook, Inc. | Device sled extension limit latch |
US10396497B1 (en) | 2018-04-23 | 2019-08-27 | Wavetherm Corporation | Plug-in module injector lever assembly, kit, and method |
CN113453453A (en) * | 2020-03-25 | 2021-09-28 | 鸿富锦精密电子(天津)有限公司 | Buckle device and electronic equipment applying same |
US11304327B2 (en) * | 2019-02-14 | 2022-04-12 | Dell Products L.P. | System and method for mechanical release of sleds in enclosures |
US11330728B2 (en) * | 2019-11-19 | 2022-05-10 | Pegatron Corporation | Handle extension structure and electronic device casing |
US20230099556A1 (en) * | 2021-09-21 | 2023-03-30 | Benjamin K. Sharfi | Rugged utility ultra slim self-locking ejector device |
US20230144465A1 (en) * | 2021-11-05 | 2023-05-11 | Cisco Technology, Inc. | Ejector for field replaceable module |
US20240055026A1 (en) * | 2022-08-15 | 2024-02-15 | Microsoft Technology Licensing, Llc | Drive secure cover plate |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102573379A (en) * | 2010-12-25 | 2012-07-11 | 鸿富锦精密工业(深圳)有限公司 | Electronic device |
US8611103B2 (en) * | 2011-10-27 | 2013-12-17 | Cisco Technology, Inc. | Latching injector/ejector |
US9066449B2 (en) | 2013-05-23 | 2015-06-23 | Cisco Technology, Inc. | Air filtration and visual barrier for enclosure with front-to-back airflow |
EP3014378B1 (en) * | 2013-06-28 | 2019-09-04 | Hewlett-Packard Enterprise Development LP | Lever unit |
US9420716B2 (en) * | 2013-07-02 | 2016-08-16 | Atlas Sound Lp | Electronic module installation tools for electronic racks |
US8936477B1 (en) * | 2013-08-30 | 2015-01-20 | Lenovo Enterprise Solutions (Singapore) Pte. Ltd. | Apparatus to interconnect orthogonal circuit boards for high data rate use |
US10285291B1 (en) * | 2018-02-17 | 2019-05-07 | Cisco Technology, Inc. | Line card ejector with emergency release |
US11284531B2 (en) | 2018-05-23 | 2022-03-22 | Erico International Corporation | Ejector for electric modules |
US20200321730A1 (en) * | 2019-06-21 | 2020-10-08 | Intel Corporation | Small form factor connection mechanism for a card to card connector |
TWI771193B (en) * | 2021-09-23 | 2022-07-11 | 緯穎科技服務股份有限公司 | Unlock mechanism and server |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5232374A (en) * | 1990-09-18 | 1993-08-03 | Hirose Electric Co., Ltd. | Lock eject mechanism for electrical connectors |
US5765933A (en) * | 1997-02-13 | 1998-06-16 | Kingston Technology Company | Cam assisted ejection handle for a removable drive carrier |
US6379167B1 (en) * | 2000-06-09 | 2002-04-30 | Hon Hai Precision Ind. Co., Ltd. | Multimedia card electrical connector with an improved ejector mechanism |
US20020182909A1 (en) * | 2001-06-04 | 2002-12-05 | Emmanuel Stathopoulos | Insertion and extraction aid for printed circuit card |
US7121866B2 (en) * | 2002-08-06 | 2006-10-17 | Fci | Electric connecter |
US7297008B2 (en) * | 2003-05-30 | 2007-11-20 | Alcatel Usa Sourcing, L.P. | Cam and lever ejector assembly |
US7438571B1 (en) * | 2007-10-16 | 2008-10-21 | International Business Machines Corporation | Multiple location latch mechanism with single actuation |
US7462049B2 (en) * | 2006-08-25 | 2008-12-09 | Hon Hai Precision Ind. Co., Ltd. | Electrical connector |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6160717A (en) | 1999-02-24 | 2000-12-12 | Cisco Technology Inc. | Integrated retention spring with card ejector |
US6853556B1 (en) | 2004-01-12 | 2005-02-08 | Cisco Techonology, Inc. | Methods and apparatus for decoupling circuit board connectors |
US7607877B1 (en) | 2008-02-21 | 2009-10-27 | Cisco Technology, Inc. | Clinch for a circuit card ejector |
-
2011
- 2011-11-22 US US13/301,892 patent/US8435057B1/en not_active Expired - Fee Related
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5232374A (en) * | 1990-09-18 | 1993-08-03 | Hirose Electric Co., Ltd. | Lock eject mechanism for electrical connectors |
US5765933A (en) * | 1997-02-13 | 1998-06-16 | Kingston Technology Company | Cam assisted ejection handle for a removable drive carrier |
US6379167B1 (en) * | 2000-06-09 | 2002-04-30 | Hon Hai Precision Ind. Co., Ltd. | Multimedia card electrical connector with an improved ejector mechanism |
US20020182909A1 (en) * | 2001-06-04 | 2002-12-05 | Emmanuel Stathopoulos | Insertion and extraction aid for printed circuit card |
US7121866B2 (en) * | 2002-08-06 | 2006-10-17 | Fci | Electric connecter |
US7297008B2 (en) * | 2003-05-30 | 2007-11-20 | Alcatel Usa Sourcing, L.P. | Cam and lever ejector assembly |
US7462049B2 (en) * | 2006-08-25 | 2008-12-09 | Hon Hai Precision Ind. Co., Ltd. | Electrical connector |
US7438571B1 (en) * | 2007-10-16 | 2008-10-21 | International Business Machines Corporation | Multiple location latch mechanism with single actuation |
Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140118972A1 (en) * | 2012-10-31 | 2014-05-01 | Fujitsu Limited | Electronic circuit unit and communication device |
US9545028B2 (en) * | 2012-10-31 | 2017-01-10 | Fujitsu Limited | Electronic circuit unit and communication device |
US20150004818A1 (en) * | 2013-06-27 | 2015-01-01 | Chiun Mai Communication Systems, Inc. | Chip card ejecting mechanism |
US9270317B2 (en) * | 2013-06-27 | 2016-02-23 | Chiun Mai Communication Syatems, Inc. | Chip card ejecting mechanism |
US20150076982A1 (en) * | 2013-09-14 | 2015-03-19 | Francis Degay | Apparatus for locking a component drawer into a chassis |
US9269400B2 (en) * | 2013-09-14 | 2016-02-23 | Seagate Technology Llc | Apparatus for locking a component drawer into a chassis |
US20150156902A1 (en) * | 2013-12-02 | 2015-06-04 | Dell Products L.P. | Multi-stage information handling resource release latch for use in a modular information handling system chassis |
US9258913B2 (en) * | 2013-12-02 | 2016-02-09 | Dell Products L.P. | Multi-stage information handling resource release latch for use in a modular information handling system chassis |
US20180168061A1 (en) * | 2016-12-08 | 2018-06-14 | Southco, Inc. | Ejector latch assembly and system for securing a board within a frame |
US10206302B2 (en) * | 2016-12-08 | 2019-02-12 | Southco, Inc. | Ejector latch assembly and system for securing a board within a frame |
US20190075666A1 (en) * | 2017-09-06 | 2019-03-07 | Facebook, Inc. | Device sled extension limit latch |
US10932383B2 (en) * | 2017-09-06 | 2021-02-23 | Facebook, Inc. | Device sled extension limit latch |
US11337320B1 (en) | 2017-09-06 | 2022-05-17 | Meta Platforms, Inc. | Device sled extension limit latch |
US10396497B1 (en) | 2018-04-23 | 2019-08-27 | Wavetherm Corporation | Plug-in module injector lever assembly, kit, and method |
WO2019209238A1 (en) * | 2018-04-23 | 2019-10-31 | Wavetherm Corporation | Plug-in module injector lever assembly, kit, and method |
US11304327B2 (en) * | 2019-02-14 | 2022-04-12 | Dell Products L.P. | System and method for mechanical release of sleds in enclosures |
US11330728B2 (en) * | 2019-11-19 | 2022-05-10 | Pegatron Corporation | Handle extension structure and electronic device casing |
CN113453453A (en) * | 2020-03-25 | 2021-09-28 | 鸿富锦精密电子(天津)有限公司 | Buckle device and electronic equipment applying same |
US11160180B2 (en) * | 2020-03-25 | 2021-10-26 | Hongfujin Precision Electronics (Tianjin) Co., Ltd. | Securing apparatus and electronic device using the same |
US20230099556A1 (en) * | 2021-09-21 | 2023-03-30 | Benjamin K. Sharfi | Rugged utility ultra slim self-locking ejector device |
US11825624B2 (en) * | 2021-09-21 | 2023-11-21 | Benjamin K. Sharfi | Rugged utility ultra slim self-locking ejector device |
US20230144465A1 (en) * | 2021-11-05 | 2023-05-11 | Cisco Technology, Inc. | Ejector for field replaceable module |
US20240055026A1 (en) * | 2022-08-15 | 2024-02-15 | Microsoft Technology Licensing, Llc | Drive secure cover plate |
Also Published As
Publication number | Publication date |
---|---|
US8435057B1 (en) | 2013-05-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8435057B1 (en) | Dual-cam ejector assembly | |
US6354164B1 (en) | Lever system utilizing rack and pinion gear | |
TWI287334B (en) | Connector module | |
EP2287976B1 (en) | Electrical connector | |
US5275573A (en) | Electrical connector eject mechanism | |
US8747127B2 (en) | Receptacle connector | |
JP4750811B2 (en) | Cable connector | |
US20130115794A1 (en) | Small form factor plugable connector having a low profile releasing mechanism | |
US20110256744A1 (en) | Electrical connector having dust-proof device with self-driven arrangement | |
JP5811341B2 (en) | Connector device | |
JP2011040295A (en) | Electrical connector | |
CN102916296B (en) | Card connector | |
JP4764573B2 (en) | Cable connector | |
TWI735989B (en) | Pluggable connector | |
US20230028263A1 (en) | Card retainers | |
JP4074022B2 (en) | Shield connector | |
KR20060115893A (en) | Connector system with improved unplugging functionality | |
US8523592B1 (en) | Electrical connector | |
JP4301636B2 (en) | Electronic device having connector disconnection prevention mechanism | |
JP3270025B2 (en) | Docking station | |
TWM253960U (en) | Card connector | |
JP2007280785A (en) | Connector | |
CN220629744U (en) | Module box, board card module and electronic equipment | |
JP3235253U (en) | Connector with lock and unlock structure | |
JP2717346B2 (en) | Connector with switch |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: CISCO TECHNOLOGY, INC., CALIFORNIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:JUN, FRANK S.;HUYNH, HONG TRAN;LI, YEWEN;AND OTHERS;SIGNING DATES FROM 20111117 TO 20111118;REEL/FRAME:027272/0461 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
FEPP | Fee payment procedure |
Free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
LAPS | Lapse for failure to pay maintenance fees |
Free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20210507 |