CN221338366U - Pulling aid and server support - Google Patents

Abstract

The application discloses a pull-out aid, which comprises: a housing; a handle coupled to the housing and movable relative to the housing, the handle including an elongated slot; a cam member rotatably secured to the housing and in communication with the elongated slot of the handle, wherein the handle has an initial position, an extended position and an actuated position relative to the housing, the handle translates relative to the housing between the initial position and the extended position, the handle rotates relative to the housing between the extended position and the actuated position, and rotation of the handle rotates the cam member. The pull-out aid is simple to operate, convenient to use and attractive in appearance.

Description

Pulling aid and server support

Technical Field

The application relates to a pull-out aid, in particular to a hidden pull-out aid. The application also relates to a server bracket with the pull-out aid.

Background

A server rack is a device for placing and securing one or more servers. Because the weight of the server is large, a tool for assisting in installing and detaching the server, namely, a pull-out aid, can be arranged on the server bracket. The extractor aid can generally make the installation and removal of the server more labor-saving by means of an assisted amplifying mechanism (e.g., lever).

However, existing extractor aids are typically exposed to the outside of the server rack, and are thus visually unattractive. The existing extractor is complex in operation process, easy to cause misoperation and low in reliability.

Thus, there is a need for a pull-out aid that is simple to operate, reliable in construction, and capable of being hidden.

Disclosure of utility model

It is an object of the present application to provide a extractor aid which can be at least partially concealed when not in use.

The application aims to provide a pull-out aid which is simple to operate and reliable in structure.

In order to achieve the above object, the present application provides a pull-out aid, comprising: a housing; a handle coupled to the housing and movable relative to the housing, the handle including an elongated slot; a cam member rotatably secured to the housing and in communication with the elongated slot of the handle, wherein the handle has an initial position, an extended position and an actuated position relative to the housing, the handle translates relative to the housing between the initial position and the extended position, the handle rotates relative to the housing between the extended position and the actuated position, and rotation of the handle rotates the cam member.

In one embodiment, the cam member includes a linkage portion that is constrained within an elongated slot of the handle.

In one embodiment, the handle has a grip portion located outside the housing, wherein a distance from the grip portion to a rotation center of the handle is greater than a distance from the interlocking portion to a rotation center of the cam member when the handle is in the extended position and the actuated position, and a distance from the grip portion to a rotation center of the handle is greater than a distance from the interlocking portion to a rotation center of the handle.

In one embodiment, the distance from the grip portion to the rotation center of the handle is 5 times or more the distance from the interlocking portion to the rotation center of the cam member, and 5 times or more the distance from the interlocking portion to the rotation center of the handle.

In one embodiment, the cam member includes a catch that is operable to engage a bracket.

In one embodiment, the interlocking portion is located at one end of the elongated slot when the handle is in the initial position, and the interlocking portion is located at the other end of the elongated slot when the handle is in the extended position.

In one embodiment, the extractor further comprises a rotation stop rotatably secured to the housing, and the rotation stop is operable to prevent the handle from returning from the actuated position to the extended position by preventing rotation of the cam member.

In one embodiment, the rotation stop has a locked position in which the rotation stop prevents rotation of the cam member in one direction and an unlocked position in which the rotation stop allows rotation of the cam member.

In one embodiment, the rotational stop comprises a release portion that can be actuated to change the rotational stop from the locked position to the unlocked position.

In one embodiment, the release portion protrudes outside the housing when the rotation stopper is in the locked position, and the release portion is actuatable in a direction toward the inside of the housing to change the rotation stopper from the locked position to the unlocked position.

In one embodiment, the rotation stopper further includes an abutment portion, and the cam member includes a boss portion, and the rotation stopper prevents rotation of the cam member in the one direction by the abutment portion abutting one side of the boss portion.

In one embodiment, the rotational stop is configured to tend to rotate from the unlocked position to the locked position.

In one embodiment, the extractor further includes an extension stop rotatably secured to the housing and operable to prevent the handle from moving from the initial position to the extended position.

In one embodiment, the extractor further comprises a first elastomer that applies a force to the handle toward the extended position.

In one embodiment, the housing includes a first housing and a second housing, the handle, the cam member, the rotational stop, and the extension stop being disposed between the first housing and the second housing.

In one embodiment, at least one of the first housing and the second housing includes a limit slot, and the handle includes a limit pin, the limit pin being restrained within the limit slot.

In one embodiment, the limit groove includes an arc-shaped section and a straight section, the arc-shaped section being formed at one end of the straight section.

In one embodiment, the stop pin is located at the one end of the straight section when the handle is in the extended position, and the stop pin is located at the one end of the arcuate section remote from the straight section when the handle is in the actuated position.

In one embodiment, the extractor aid is movably arranged on a support, the cam member being engaged to the support and moving relative to the support when the handle is moved between the extended position and the actuated position.

In another aspect, the present application provides a server rack comprising a rack and a pull aid as described above.

The pull-out aid is simple to operate and convenient to use, and can not cause misoperation.

The pull-up aid of the application can be hidden in the housing when not in use, thereby improving the aesthetic appearance of the pull-up aid and not undesirably activating the server by accidental touch.

Drawings

Various objects, features and advantages of the present application will become more apparent from the following detailed description of the preferred embodiments of the application, when taken in conjunction with the accompanying drawings. The drawings are merely exemplary illustrations of the application and are not necessarily drawn to scale. In the drawings, like reference numerals refer to the same or similar parts throughout. Wherein:

FIG. 1 is a front view of the extractor aid of the present application;

FIG. 2 is a top view of the extractor aid of the present application;

FIG. 3 is a bottom view of the extractor aid of the present application;

FIG. 4 is a left side view of the extractor aid of the present application;

FIG. 5 is a right side view of the extractor aid of the present application;

FIG. 6 is a perspective view of the extractor aid of the present application;

FIG. 7 is a plan view of the extractor aid of the present application;

FIG. 8 is another perspective view of the extractor aid of the present application;

FIG. 9 is an exploded perspective view of the extractor aid of the present application;

FIG. 10 is a perspective view of a second housing portion of the extractor aid of the present application;

FIG. 11 is another perspective view of the second housing portion of the extractor aid of the present application;

FIG. 12 is a perspective view of a first housing portion of the extractor aid of the present application;

FIG. 13 is another perspective view of the first housing portion of the extractor aid of the present application;

FIG. 14 is a perspective view of the handle of the extractor aid of the present application;

FIG. 15 is another perspective view of the handle of the extractor aid of the present application;

FIG. 16 is a perspective view of the rotational stop of the extractor aid of the present application;

FIG. 17 is another perspective view of the rotational stop of the extractor aid of the present application;

FIG. 18 is a perspective view of the cam member of the extractor aid of the present application;

FIG. 19 is another perspective view of the cam member of the extractor aid of the present application;

FIG. 20 is a plan view of the extractor aid of the present application with the handle in an unextended position;

FIG. 21 is a cross-sectional view taken along line A-A of FIG. 20;

FIG. 22 is a cross-sectional view taken along line F-F in FIG. 20;

FIG. 23 is a plan view of the extractor aid of the present application with the handle being extended from the housing;

FIG. 24 is a cross-sectional view taken along line G-G in FIG. 23;

FIG. 25 is a cross-sectional view taken along line H-H in FIG. 23;

FIG. 26 is a plan view of the extractor aid of the present application with the handle in the extended position;

FIG. 27 is a cross-sectional view taken along line J-J in FIG. 26;

FIG. 28 is a cross-sectional view taken along line K-K in FIG. 26;

FIG. 29 is a plan view of the extractor aid of the present application with the handle in the actuated position;

FIG. 30 is a cross-sectional view taken along line M-M in FIG. 29;

FIG. 31 is a cross-sectional view taken along line L-L in FIG. 29;

FIG. 32 is a plan view of the extractor aid of the present application with the handle in the actuated position; and

Fig. 33 is a sectional view taken along the line R-R in fig. 32.

List of reference numerals:

1. Pulling aid

10. Shell body

11. A first housing part

111. Fixing hole

12. A second housing part

121. Fixing hole

122. Limiting groove

1221. Arcuate section

1222. Straight line section

20. Rotation stop

21. Actuating part

22. Release part

23. Abutment portion

30. Cam member

31. Capturing part

32. Limiting part

33. Linkage part

34. Raised portion

341. A first convex surface

342. A second convex surface

40. Handle

41. Handle portion

42. Elongated groove

43. Limiting pin

44. Concave part

45. Step part

50. Extension stop

51. Actuating part

52. Unlocking part

53. Abutment portion

901. First elastic body

902. Second elastic body

903. Third elastomer

904. Spacing piece

905. Pin shaft

906. First shaft spacer

907. Second shaft spacer

908. Spacing post

2. Clamping column

Detailed Description

For the purpose of further illustrating the principles and structure of the present application, there is shown in the drawings, embodiments which are presently preferred, and which are therefore intended to be illustrative and not in any way limiting in scope.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this specification and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

The extractor aid 1 of the present application may be used in a server rack (not shown). In particular, the extractor aid 1 may be used to assist in mounting and dismounting a server (not shown) to and from a server rack. The extractor aid 1 may be fixed with the server. A server rack may have a plurality of servers mounted thereon, in which case each server is fixed with one or two of the extractors 1. It will be appreciated that the extractor aid 1 of the present application may be applied to other devices than server racks.

Referring to fig. 1-9, the extractor aid 1 may include a housing 10, a handle 40, and a cam member 30. Optionally, the extractor aid 1 may further comprise a rotation stop 20 and/or an extension stop 50. The handle 40 may be coupled to the housing 10 and movable relative to the housing 10. The rotation stopper 20, the cam member 30, and the extension stopper 50 are rotatably fixed to the housing 10, respectively, but the present application is not limited thereto.

The housing 10 may have a generally cubic shape. The housing 10 may include a first housing 11 and a second housing 12. The first housing 11 and the second housing 12 are fixed to each other and together enclose a certain inner space. The rotation stopper 20, the cam member 30, the handle 40, and the extension stopper 50 are at least partially located in the above-described inner space. The thickness (dimension in the up-down direction in fig. 2) of the housing 10 may be smaller than the length (dimension in the left-right direction in fig. 1) and the width (dimension in the up-down direction in fig. 1) of the housing 10, thereby minimizing the space occupied by the extractor 1.

The housing 10 may have a thickness in the range of 7cm to 8cm, for example 7.5cm. The housing 10 may have a length in the range of 95cm to 105cm, for example 100cm. The extractor aid 1 may have a width of 35cm to 39cm, for example 37.5cm. The dimensions of the extractor 1 and the housing 10 according to the application are not limited to the above values.

The first housing 11 may have a plurality of fixing holes 111 thereon, and the second housing 12 may have a plurality of fixing holes 121 thereon. Spacers (described in detail below) may pass through the fixing holes 111 and 121, and fasteners (e.g., screws) may pass through the spacers to fix the first and second cases 11 and 12 with the server. Alternatively, the fixing hole may be provided only on the first housing 11 or the second housing 12.

As shown in fig. 1, the cam member 30 protrudes from below the housing 10, and the handle 40 and the protruding stopper 50 protrude from the right side of the housing 10, respectively.

Referring to fig. 9, a spacer 904, a first shaft spacer 906, and a second shaft spacer 907 may be provided between the first housing 11 and the second housing 12. The spacers 904, the first shaft spacer 906, and the second shaft spacer 907 may be used to maintain the spacing between the first housing 11 and the second housing 12. 2 spacers 904 are shown in fig. 9, but the spacers 904 may be other numbers, such as 1, 3, 4, etc. The spacer 904 may pass through the fixing holes 111, 121 and abut the first and second cases 11, 12. The first shaft spacer 906 may pass through the cam member 30 and the fixing holes 111, 121 and abut the first housing 11 and the second housing 12. The spacer 904 and the first shaft spacer 906 may be hollow for the fastener to pass through. The second shaft spacer 907 may pass through the rotation stopper 20 and abut the first housing 11 and the second housing 12. The first shaft spacer 906 is a rotation shaft of the cam member 30. The second shaft spacer 907 is a rotation shaft of the rotation stopper 20. The extractor aid 1 may further comprise a first elastic body 901, a second elastic body 902 and a third elastic body 903 (described in detail below). The first elastic body 901 may be a torsion spring, and the second elastic body 902 and the third elastic body 903 may be coil springs, but the present application is not limited thereto. Alternatively, the first elastic body 901 may be a coil spring, the second elastic body 902 may be a torsion spring, and the third elastic body 903 may be a torsion spring. The pull aid 1 may also comprise a pin 905. The pin 905 may pass through the extension stopper 50 to serve as a rotation axis of the extension stopper 50.

Referring to fig. 9-11, the second housing portion 12 may include a limit groove 122. The limit slot 122 may include a straight section 1222 extending in a straight line and an arcuate section 1221 extending in an arc. The extending direction of the straight line section 1222 may be a longitudinal direction (left-right direction in fig. 7) of the second housing portion 12. The arcuate section 1221 may extend from one end of the straight section 1222 generally transverse to the straight section 1222. Alternatively, the limit groove 122 may be provided on the first housing part 11. Referring to fig. 9 to 13, the fixing holes 111 and 121 may be formed in a hexagonal shape, but the present application is not limited thereto.

Referring to fig. 14 and 15, the handle 40 may have a grip portion 41, an elongated groove 42, a stopper pin 43, a recess 44, and a stepped portion 45. The handle portion 41 may extend outside the housing 10 to facilitate gripping by hand. The length of the handle portion 41 extending out of the housing 1 may be in the range of 10cm to 20cm, for example 15cm. The elongated slot 42 may extend along the length of the handle 40. The elongated slot 42 may be parallel to the linear section 1222 of the limit slot 122, but the application is not limited thereto. A stopper pin 43 is formed at an end of the handle 40 remote from the grip portion 41. The stopper pin 43 may be restricted within the stopper groove 122 so as to be movable along the stopper groove 122. A recess 44 may be formed at the underside of the handle 40, adjacent to the stop pin 43. A stepped portion 45 may be formed at an upper side of the handle 40, and close to the grip portion 41.

Referring to fig. 16 and 17, the rotation stopper 20 may include an actuating portion 21, a releasing portion 22, and an abutting portion 23. The actuating portion 21, the releasing portion 22, and the abutting portion 23 may protrude outward from the rotation center of the rotation stopper 20, respectively. The thickness of the abutment portion 23 (the dimension parallel to the rotation axis direction of the rotation stopper 20) is larger than the thickness of the release portion 22. The lower portion of the actuating portion 21 may be formed in a shape to receive the second elastic body 902, for example, a recess is formed. The second elastic body 902 may be disposed between the actuating portion 21 and the housing 10 to apply a pushing force to the actuating portion 21. Alternatively, the second elastic body 902 may be provided above the actuating portion 21 to apply a tensile force to the actuating portion 21.

Referring to fig. 18 and 19, the cam member 30 may include a catching portion 31, a limiting portion 32, a coupling portion 33, and a protruding portion 34. The catching portion 31 and the limiting portion 32 may protrude outward from the rotation center of the cam member 30, respectively. The catch 31 may be formed in a generally "U" shape so as to be able to operatively catch or release the card post 2 of the server rack in the recess (see fig. 21). The linkage 33 may extend into the elongate slot 42 of the handle 40 and be retained therein by the elongate slot 42. The stopper 32 may abut the underside of the handle 40 to hold the handle 40 in a horizontal position (i.e., the position shown in fig. 21). The boss 34 is a projection radially outward relative to the center of rotation of the cam member 30. The boss 34 may have a first boss surface 341 and a second boss surface 342 at both sides in the circumferential direction. The abutment 23 may abut the first and second convex surfaces 341 and 342, respectively.

Referring to fig. 9 and 21, the extension stopper 50 may include an actuating portion 51, an unlocking portion 52, and an abutment portion 53. The actuating portion 51, the unlocking portion 52, and the abutment portion 53 may protrude outward from the rotation center of the extension stopper 50, respectively. The actuating portion 51 may be formed above in a shape to receive the third elastic body 903, for example, a recess is formed. The third elastic body 903 may be disposed between the actuating portion 51 and the housing 10 to apply a pushing force to the actuating portion 51. Alternatively, the third elastic body 903 may be provided below the actuating portion 51 to apply a tensile force to the actuating portion 51.

The operation of the extractor 1 will be described below.

The handle 40 may have an initial position (as shown in fig. 20-22), an extended position (as shown in fig. 26-28), and an actuated position (as shown in fig. 29-31) relative to the housing 10. The handle 40 is translatable relative to the housing 10 between an initial position and an extended position. The handle 40 rotates relative to the housing 10 between an extended position and an actuated position. Rotation of the handle 40 may rotate the cam member 30.

Fig. 20-22 show the handle 40 in the initial position. Referring to fig. 20-22, a majority of the handle 40 is located within the housing 10, with only the grip portion 41 extending out of the housing 10. As shown in fig. 21, the first elastic body 901 abuts on the left side of the handle 40, and applies a rightward pushing force to the handle 40. Although the first elastic body 901 is shown in fig. 21 as a torsion spring, the first elastic body 901 may be a coil spring or other structure capable of applying a pushing or pulling force. The abutment portion 53 of the extension stopper 50 abuts against the stepped portion 45 of the handle 40 so that the handle 40 is not pushed by the first elastic body 901. The stopper pin 43 of the handle 40 is located at the left end of the stopper groove 122 of the second housing part 12 (see fig. 15 and 21). The interlocking portion 33 of the cam member 30 is located at the right end of the elongated groove 42 of the handle 40. The stopper 32 of the cam member 30 abuts the underside of the handle 40. The clip 2 is located within the catch 31 of the cam member 30. The stop post 908 passes through the stop slot 122. The abutment portion 23 of the rotation stopper 20 abuts against the first convex surface 341 of the convex portion 34 (i.e., the locked position of the rotation stopper 20) so that the rotation stopper 20 does not rotate clockwise due to the urging force of the third elastic body 903. The release portion 22 of the rotation stopper 20 protrudes slightly from the lower surface of the housing 10. Alternatively, the release portion 22 of the rotation stopper 20 does not protrude from the lower surface of the housing 10.

Fig. 23-25 show the handle 40 being moved from the initial position to the extended position. Referring to fig. 23-25, when the unlocking portion 52 of the extension stopper 50 is pressed downward, the extension stopper 50 rotates clockwise about its rotation axis, so that the abutment portion 53 moves upward without abutting the stepped portion 45 of the handle 40. At this time, the first elastic body 901 urges the handle 40 to translate rightward. The linear section 1222 and the elongated slot 42 of the limit slot 122 may be disposed parallel to or aligned with each other, and the limit post 908 passing through the elongated slot 42 may be located on an extension of the linear section 1222. Because of the limitation of the limiting groove 122 to the limiting pin 43 and the limitation of the limiting post 908 to the elongated groove 42, the handle 40 will not deflect during the rightward translation. During translation of the handle 40, the rotational stop 20 and the cam member 30 do not rotate.

Fig. 26-28 show the handle 40 in an extended position. The handle 40 is movable from the initial position to the extended position by virtue of the elasticity of the first elastic body 901. Alternatively, the handle 40 may be moved from the initial position to the extended position by virtue of the elasticity of the first elastic body 901 and the pulling force of the operator. Referring to fig. 26-28, when the handle 40 is in the extended position, the handle 40 cannot be moved further to the right due to the abutment of the stop post 908 against the left end of the elongate slot 42 and/or the abutment of the stop pin 43 against the right end of the straight section 1222 of the stop slot 122.

Fig. 29-33 show the handle 40 in the actuated position. Referring to fig. 27, 30 and 33, when the handle 40 is in the extended position, the handle 40 can be rotated about the stop post 908 while the stop pin 43 enters the arcuate section 1221 from the straight section 1222. Due to the rotation of the handle 40, the elongated groove 42 causes the cam member 30 to rotate clockwise by actuating the interlocking portion 33. In this process, the catch portion 31 of the cam member 30 applies a pushing force to the card post 2 to the left. Since the card post 2 is fixed to the server rack, the extractor 1 and the server fixed to the extractor 1 are pushed rightward by the reaction force of the card post 2 to be separated from the server rack. At this point, the handle 40 is moved to the actuated position. Meanwhile, during clockwise rotation of the cam member 30, the abutment 23 is pushed by the third elastic body 903, moves from the first convex surface 341 to the second convex surface 342 of the convex portion 34, and prevents counterclockwise rotation of the cam member 30 by abutting the second convex surface 342. At this time, the release portion 22 protrudes further from the opening of the lower side of the housing 10. The limit pin 43 moves from bottom to top along the arcuate section 1221 of the limit slot 122 during movement of the handle 40 from the extended position to the actuated position, and the limit pin 43 is at the upper end of the arcuate section 1221 when the handle 40 reaches the actuated position. Also, as shown in fig. 31, when the handle 40 reaches the actuated position, the position of the recess 44 of the handle 40 corresponds to the position of the pivot shaft (i.e., the first shaft spacer 906) of the cam member 30, so that the handle 40 and the first shaft spacer 906 do not interfere with each other at the actuated position. Depending on the desired angle of rotation of the handle 40, the handle 40 may also be devoid of the recess 44. The angle of rotation of the handle 40 from the extended position to the actuated position may be in the range of 20 ° to 45 °, in particular 25 ° to 35 °. At this time, the handle 40 cannot be rotated further clockwise due to the restriction of the pivotal axes of the arc-shaped section 1221 and the cam member 30. That is, when the handle 40 is in the actuated position, both clockwise and counterclockwise rotation of the handle 40 is prevented, and the arcuate section 1221 also prevents translation of the handle 40. Thus, once the handle 40 is moved to the actuated position, the handle 40 is locked relative to the housing 10. At this point, the server may be pulled by means of the handle 40 to completely disengage the server from the server rack.

When the handle 40 is in the extended position and/or the actuated position, the distance of the grip portion 41 from the center of rotation of the handle 40 (i.e., the limit post 908) is greater than the distance of the linkage portion 33 from the center of rotation of the cam member 30 (i.e., the first shaft spacer 906). The distance from the grip portion 41 to the rotation center of the handle 40 is also longer than the distance from the interlocking portion 33 to the rotation center of the handle 40. In this way, the handle 40 and the cam member 30 form a lever, thereby amplifying the force applied to the grip portion 41 to transmit to the cam member 30, so that the handle 40 can be driven with a smaller force to remove a heavier server from the server rack, achieving a labor-saving effect.

Specifically, the distance of the grip portion 41 to the rotation center of the handle 40 may be 5 times or more, for example, in the range of 6 times to 12 times, specifically, may be 8 times or 10 times, the distance of the interlocking portion 33 to the rotation center of the cam member 30. The distance from the grip portion 41 to the rotation center of the handle 40 may be 5 times or more, for example, in the range of 6 times to 12 times, the distance from the interlocking portion 33 to the rotation center of the handle 40. As shown in fig. 27 and 30, since the interlocking portion 33 is slidable in the elongated groove 42, the distance of the interlocking portion 33 from the rotation center of the handle 40 varies within a certain range when the handle 40 moves between the extended position and the actuated position.

When the handle 40 is moved from the extended position to the actuated position, the movement distance of the catch 31 is set so as to be able to satisfy the need to separate the server from the server rack.

The above procedure may be performed in reverse when it is desired to mount the server to the server rack. Specifically, the server may first be lifted up by means of the handle 40 and moved towards the inside of the server rack. As shown in fig. 30, during the leftward movement of the extractor aid 1 and the server together, the release portion 22 is actuated by the collision of the clamping posts 2, so that the rotation stopper 20 rotates counterclockwise and no longer abuts the second projection surface 342 (i.e., the unlocking position of the rotation stopper 20). Thus, the cam member 30 is rotatable. When the extractor 1 and the server are moved further to the left together, the card post 2 is received by the catch 31, and the card post 2 pushes the cam member 30 to rotate counterclockwise. At this point, the handle 40 may be operated to return from the actuated position to the extended position. When the handle 40 is in the extended position, the server has been installed in place. Then, the push handle 40 is returned from the extended position to the initial position. In this process, the left end of the handle 40 pushes the first elastic body 901 so that the first elastic body 901 stores elastic potential energy. Once the step 45 moves to the left of the abutment 53, the third elastic body 903 urges the abutment 53 to move downward, so that the handle 40 is locked against rightward movement. In the initial position, since the elongate slot 42 prevents the cam member 30 from rotating and the card post 2 is located within the catch 31, the card post 2 actually secures the extractor 1 and the server such that the extractor 1 and the server cannot move relative to the server rack.

Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

While this application has been described in connection with a specific example set forth herein, the terminology used is intended to be in the nature of words of description and illustration rather than of limitation. As the present application may be embodied in several forms without departing from the spirit or essential attributes thereof, it should be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its scope as defined in the appended claims, and therefore all changes that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the claims.

Claims (20)

1. A pull-out aid, the pull-out aid comprising:

A housing;

A handle coupled to the housing and movable relative to the housing, the handle including an elongated slot;

A cam member rotatably fixed to the housing and interlocked with the elongated groove of the handle,

Wherein the handle has an initial position, an extended position and an actuated position relative to the housing, the handle translates relative to the housing between the initial position and the extended position, the handle rotates relative to the housing between the extended position and the actuated position, and rotation of the handle rotates the cam member.

2. The extractor aid according to claim 1, wherein the cam member includes a linkage that is constrained within an elongated slot of the handle.

3. The extractor aid according to claim 2, wherein the handle has a grip portion, the grip portion being located outside the housing,

Wherein, when the handle is in the extended position and the actuated position, a distance from the grip portion to a rotation center of the handle is greater than a distance from the interlocking portion to a rotation center of the cam member, and a distance from the grip portion to a rotation center of the handle is greater than a distance from the interlocking portion to a rotation center of the handle.

4. A pull-out aid according to claim 3, wherein the distance from the grip portion to the rotation center of the handle is 5 times or more the distance from the interlocking portion to the rotation center of the cam member and 5 times or more the distance from the interlocking portion to the rotation center of the handle.

5. A pull-out aid according to claim 3, wherein the cam member includes a catch operable to engage a bracket.

6. The extractor aid according to claim 2, wherein the interlocking portion is located at one end of the elongated slot when the handle is in the initial position, and the interlocking portion is located at the other end of the elongated slot when the handle is in the extended position.

7. The extractor aid according to claim 1, further comprising a rotation stop rotatably secured to the housing and operable to prevent the handle from returning from the actuated position to the extended position by preventing rotation of the cam member.

8. The extractor aid according to claim 7, wherein the rotation stop has a locked position and an unlocked position, wherein the rotation stop prevents rotation of the cam member in one direction in the locked position and the rotation stop allows rotation of the cam member in the unlocked position.

9. The extractor aid according to claim 8, wherein the rotation stop comprises a release portion that can be actuated to change the rotation stop from the locked position to the unlocked position.

10. The extractor aid according to claim 9, characterized in that the release part protrudes outside the housing when the rotation stop is in the locked position, and that the release part can be actuated in a direction towards the inside of the housing to change the rotation stop from the locked position to the unlocked position.

11. The extractor aid according to claim 9, wherein the rotation stop further comprises an abutment, the cam member comprising a boss, the rotation stop preventing rotation of the cam member in the one direction by the abutment abutting one side of the boss.

12. The extractor aid according to claim 9, wherein the rotation stop is configured to tend to rotate from the unlocked position to the locked position.

13. The extractor aid of claim 7 further comprising an extension stop rotatably secured to the housing and operable to prevent movement of the handle from the initial position to the extended position.

14. The extractor aid according to claim 13, further comprising a first elastomer that applies a force to the handle toward the extended position.

15. The extractor aid according to claim 13, wherein the housing includes a first housing and a second housing, the handle, the cam member, the rotation stop and the extension stop being disposed between the first housing and the second housing.

16. The extractor aid of claim 15, wherein at least one of the first and second housings includes a limit slot, the handle including a limit pin, the limit pin being constrained within the limit slot.

17. The extractor aid according to claim 16, wherein the limit groove comprises an arcuate section and a linear section, the arcuate section being formed at one end of the linear section.

18. The extractor aid according to claim 17, wherein the limit pin is located at the end of the straight section when the handle is in the extended position and at the end of the arcuate section remote from the straight section when the handle is in the actuated position.

19. The extractor aid according to claim 5, wherein the extractor aid is movably arranged on the support, the cam member being engaged to the support and moving relative to the support when the handle is moved between the extended position and the actuated position.

20. A server rack comprising the unplugging aid according to any one of claims 1 to 19.