Pulling assisting device and server support

Abstract

The invention discloses an extraction assisting device. The extraction assisting device comprises a shell; 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 in linkage with the elongated slot of the handle, where 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, and the actuated position is actuated between the extended position and the actuated position. The handle rotates relative to the housing between the extended position and the actuated position, and rotation of the handle drives the cam member to rotate. The pulling assisting device is easy to operate, convenient to use and attractive in appearance.

Description

Technical Field

[0001] The present application relates to an extraction aid, in particular to a hidden extraction aid, and also to a server bracket having the extraction aid. Background Art

[0002] A server rack is a device used to place and fix one or more servers. Due to the heavy weight of the server, a tool to assist in the installation and removal of the server, i.e., a puller, may be provided on the server rack. The puller can usually make the installation and removal of the server more labor-saving by means of a force amplification mechanism (e.g., a lever).

[0003] However, the existing auxiliary puller is usually exposed outside the server bracket, so it is not visually beautiful. The operation process of the existing auxiliary puller is relatively complicated, which is easy to cause misoperation, and the reliability of the existing auxiliary puller is not high.

[0004] Therefore, there is a need for an extraction aid that is simple to operate, reliable in structure and can be hidden. Summary of the invention

[0005] An object of the present application is to provide an extraction aid which can be at least partially hidden when not in use.

[0006] One object of the present application is to provide a pull-out aid which is simple to operate and has a reliable structure.

[0007] To achieve the above-mentioned purpose, the present application provides an extraction aid, which includes: a shell; a handle connected to the shell and movable relative to the shell, the handle including an elongated slot; a cam member rotatably fixed to the shell and linked with the elongated slot of the handle, wherein the handle has an initial position, an extended position and an actuated position relative to the shell, the handle translates relative to the shell between the initial position and the extended position, the handle rotates relative to the shell between the extended position and the actuated position, and the rotation of the handle drives the cam member to rotate.

[0008] In one embodiment, the cam member includes a linkage portion that is captured within an elongated slot in the handle.

[0009] In one embodiment, the handle has a handle portion, which is located outside the shell, wherein when the handle is in the extended position and the actuated position, the distance from the handle portion to the rotation center of the handle is greater than the distance from the linkage portion to the rotation center of the cam member, and the distance from the handle portion to the rotation center of the handle is greater than the distance from the linkage portion to the rotation center of the handle.

[0010] In one embodiment, the distance from the grip portion to the rotation center of the handle is more than 5 times the distance from the linkage portion to the rotation center of the cam member, and more than 5 times the distance from the linkage portion to the rotation center of the handle.

[0011] In one embodiment, the cam member includes a capture portion that is operatively engageable with a bracket.

[0012] In one embodiment, when the handle is located at the initial position, the linkage portion is located at one end of the elongated slot, and when the handle is located at the extended position, the linkage portion is located at the other end of the elongated slot.

[0013] In one embodiment, the extraction aid further comprises a rotation stopper which is rotatably fixed to the housing and which manipulably prevents the handle from returning from the actuated position to the extended position by preventing the cam member from rotating.

[0014] In one embodiment, the rotation stop has a locked position and an unlocked position, wherein the rotation stop prevents the cam member from rotating in one direction in the locked position and the rotation stop allows the cam member to rotate in the unlocked position.

[0015] In one embodiment, the rotation stop includes a release portion that can be actuated to change the rotation stop from the locked position to the unlocked position.

[0016] In one embodiment, when the rotation stopper is in the locked position, the release portion protrudes out of the housing, and the release portion can be actuated in a direction toward the inside of the housing to change the rotation stopper from the locked position to the unlocked position.

[0017] In one embodiment, the rotation stopper further includes an abutment portion, the cam member includes a protrusion portion, and the rotation stopper prevents the cam member from rotating in the one direction by the abutment portion abutting against one side of the protrusion portion.

[0018] In one embodiment, the rotation stop is configured to tend to rotate from the unlocked position to the locked position.

[0019] In one embodiment, the extraction aid further comprises an extension stopper, which is rotatably fixed to the housing and manipulably prevents the handle from moving from the initial position to the extended position.

[0020] In one embodiment, the extraction aid further includes a first elastic body, and the first elastic body applies a force to the handle toward the extended position.

[0021] In one embodiment, the housing includes a first housing and a second housing, and the handle, the cam member, the rotation stopper, and the extension stopper are disposed between the first housing and the second housing.

[0022] In one embodiment, at least one of the first shell and the second shell includes a limiting groove, and the handle includes a limiting pin, and the limiting pin is confined in the limiting groove.

[0023] In one embodiment, the limiting groove includes an arc segment and a straight segment, and the arc segment is formed at one end of the straight segment.

[0024] In one embodiment, when the handle is located at the extended position, the limit pin is located at the one end of the straight section, and when the handle is located at the actuated position, the limit pin is located at the end of the arc section away from the straight section.

[0025] In one embodiment, the extraction aid is movably disposed on a bracket, and when the handle moves between the extended position and the actuated position, the cam member is engaged with the bracket and moves relative to the bracket.

[0026] In another aspect, the present application provides a server bracket, comprising a bracket and the extraction aid as described above.

[0027] The extraction aid of the present application is simple to operate, easy to use and will not cause misoperation.

[0028] The extraction aid of the present application can be hidden in the housing when not in use, thereby improving the aesthetic appearance of the extraction aid and preventing the server from being unexpectedly actuated due to accidental touch. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Various objects, features and advantages of the present application will become more apparent by considering the following detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings. The accompanying drawings are only exemplary illustrations of the present application and are not necessarily drawn to scale. In the accompanying drawings, the same reference numerals always represent the same or similar parts. Among them:

[0030] Figure 1 is a front view of the extraction aid of the present application;

[0031] Figure 2 is a top view of the extraction aid of the present application;

[0032] Figure 3is a bottom view of the extraction aid of the present application;

[0033] Figure 4 It is a left side view of the pull-out aid of the present application;

[0034] Figure 5 It is a right side view of the extraction aid of the present application;

[0035] Figure 6 is a three-dimensional diagram of the extraction aid of the present application;

[0036] Figure 7 is a plan view of the extraction aid of the present application;

[0037] Figure 8 is another stereoscopic view of the extraction aid of the present application;

[0038] Fig. 9 It is a three-dimensional exploded view of the extraction aid of the present application;

[0039] Fig.10 is a three-dimensional view of the second housing portion of the extraction aid of the present application;

[0040] Fig.11 is another stereoscopic view of the second housing portion of the extraction aid of the present application;

[0041] Fig.12 is a three-dimensional view of the first housing portion of the extraction aid of the present application;

[0042] Fig.13 is another stereoscopic view of the first housing portion of the extraction aid of the present application;

[0043] Fig.14 is a three-dimensional diagram of the handle of the extraction aid of the present application;

[0044] Fig.15 is another stereoscopic view of the handle of the extraction aid of the present application;

[0045] Fig.16 is a three-dimensional view of a rotation stopper of the extraction aid of the present application;

[0046] Fig.17 is another stereoscopic view of the rotation stopper of the extraction aid of the present application;

[0047] Fig.18 is a three-dimensional diagram of a cam member of the pull-out aid of the present application;

[0048] Fig.19 is another stereoscopic view of the cam member of the pull-out aid of the present application;

[0049] Fig. 20 is a plan view of the extraction aid of the present application, wherein the handle is in an unextended position;

[0050] Fig.21 is along Fig. 20 A cross-sectional view taken along line AA in FIG.

[0051] Fig. 22 is along Fig. 20 A cross-sectional view taken along line FF in FIG.

[0052] Fig.23 is a plan view of the extraction aid of the present application, wherein the handle is extending from the housing;

[0053] Fig.24 is along Fig.23 A cross-sectional view taken along line GG in FIG.

[0054] Fig.25 is along Fig.23 A cross-sectional view taken along line HH in FIG.

[0055] Fig.26 is a plan view of the extraction aid of the present application, wherein the handle is in an extended position;

[0056] Fig. 27 is along Fig.26 A cross-sectional view taken along line JJ in FIG.

[0057] Fig.28 is along Fig.26 A cross-sectional view taken along line KK in FIG.

[0058] Fig.29 is a plan view of the extraction aid of the present application, wherein the handle is in an actuated position;

[0059] Fig.30 is along Fig.29 A cross-sectional view taken along line MM;

[0060] Fig.31 is along Fig.29 A cross-sectional view taken along line LL in FIG.

[0061] Fig.32 is a plan view of the extraction aid of the present application, wherein the handle is in an actuated position; and

[0062] Fig.33 is along Fig.32 A cross-sectional view taken along line RR.

[0063] List of reference numerals:

[0064] 1. Pull-out aid

[0065] 10 Housing

[0066] 11. First housing portion

[0067] 111 Fixing hole

[0068] 12. Second housing portion

[0069] 121 Fixing hole

[0070] 122 Limiting slot

[0071] 1221 Arc Segment

[0072] 1222 Straight line segments

[0073] 20 Rotation stop

[0074] 21 Actuator

[0075] 22 Release

[0076] 23 Butt part

[0077] 30 Cam member

[0078] 31 Capture Department

[0079] 32 Limiting part

[0080] 33 Linkage

[0081] 34 Raised part

[0082] 341 First raised surface

[0083] 342 second raised surface

[0084] 40 Handle

[0085] 41 Handle

[0086] 42 Long slot

[0087] 43 Limit pin

[0088] 44 recess

[0089] 45 Step

[0090] 50 Extension stop

[0091] 51 Actuator

[0092] 52 Unlocking Department

[0093] 53 abutment

[0094] 901 First Elastomer

[0095] 902 Second elastic body

[0096] 903 Third elastic body

[0097] 904 Spacer

[0098] 905 Pin

[0099] 906 First shaft spacer

[0100] 907 Second shaft spacer

[0101] 908 Limit column

[0102] 2 card column DETAILED DESCRIPTION

[0103] In order to further illustrate the principle and structure of the present application, the preferred embodiments of the present application are now described in detail in conjunction with the accompanying drawings. However, the embodiments are only for illustration and explanation and cannot be used to limit the scope of patent protection of the present application.

[0104] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms of "a", "an", "said" and "the" used in this application and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0105] The extraction aid 1 of the present application can be used for a server rack (not shown). Specifically, the extraction aid 1 can be used to assist in installing a server (not shown) on the server rack and removing the server from the server rack. The extraction aid 1 can be fixed together with the server. A plurality of servers can be installed on a server rack, in which case each server is fixed together with one or two extraction aids 1. It can be understood that the extraction aid 1 of the present application can be applied to other devices besides the server rack.

[0106] See also Figure 1-Figure 9 , the extraction aid 1 may include a housing 10, a handle 40 and a cam member 30. Optionally, the extraction aid 1 may further include a rotation stopper 20 and / or an extension stopper 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 may be rotatably fixed to the housing 10, respectively, but the present application is not limited thereto.

[0107] 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 surround a certain internal space. The rotation stopper 20, the cam member 30, the handle 40 and the extension stopper 50 are at least partially located in the internal space. The thickness of the housing 10 ( Figure 2 The dimension in the vertical direction) may be smaller than the length of the housing 10 ( Figure 1The size in the left and right directions) and width ( Figure 1 The dimension in the up-down direction) is reduced as much as possible so as to reduce the space occupied by the pull-out aid 1.

[0108] The housing 10 may have a thickness in the range of 7 cm to 8 cm, for example, 7.5 cm. The housing 10 may have a length in the range of 95 cm to 105 cm, for example, 100 cm. The extraction aid 1 may have a width in the range of 35 cm to 39 cm, for example, 37.5 cm. The dimensions of the extraction aid 1 and the housing 10 of the present application are not limited to the above values.

[0109] The first housing 11 may have a plurality of fixing holes 111, and the second housing 12 may have a plurality of fixing holes 121. 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 housing 11 and the second housing 12 to the server. Alternatively, the fixing holes may be provided only on the first housing 11 or the second housing 12.

[0110] like Figure 1 As shown, the cam member 30 extends from the bottom of the housing 10 , and the handle 40 and the extension stopper 50 extend from the right side of the housing 10 , respectively.

[0111] See also 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 spacer 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. Fig. 92 spacers 904 are shown, but the number of spacers 904 may be other, such as 1, 3, 4, etc. The spacers 904 may pass through the fixing holes 111, 121 and abut the first housing 11 and the second housing 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 spacers 904 and the first shaft spacers 906 may be hollow for fasteners 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 the rotation axis of the cam member 30. The second shaft spacer 907 is the rotation axis of the rotation stopper 20. The extraction aid 1 may also include 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-out aid 1 may further include a pin 905. The pin 905 may pass through the extension stopper 50 to serve as a rotation axis of the extension stopper 50.

[0112] See also Figure 9-11 , the second housing portion 12 may include a limiting groove 122. The limiting groove 122 may include a straight segment 1222 extending along a straight line and an arc segment 1221 extending along an arc line. The extension direction of the straight segment 1222 may be the length direction of the second housing portion 12 ( Figure 7 The arc segment 1221 may extend from one end of the straight segment 1222 substantially transversely to the straight segment 1222. Alternatively, the limiting groove 122 may be provided on the first housing portion 11. Figure 9-13 The fixing holes 111 and 121 may be formed in a hexagonal shape, but the present application is not limited thereto.

[0113] See also Fig.14 and Fig.15 , the handle 40 may have a handle portion 41, an elongated slot 42, a stop pin 43, a recess 44 and a step portion 45. The handle portion 41 may extend out of the housing 10 for easy handholding. The length of the handle portion 41 extending out of the housing 1 may be in the range of 10 cm to 20 cm, for example, 15 cm. The elongated slot 42 may extend along the length direction of the handle 40. The elongated slot 42 may be parallel to the straight section 1222 of the stop slot 122, but the present application is not limited thereto. The stop pin 43 is formed at one end of the handle 40 away from the handle portion 41. The stop pin 43 may be restricted in the stop slot 122 so that it can move along the stop slot 122. The recess 44 may be formed on the lower side of the handle 40, close to the stop pin 43. The step portion 45 may be formed on the upper side of the handle 40, close to the handle portion 41.

[0114] See also Fig.16 and Fig.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 extend outward from the rotation center of the rotation stopper 20, respectively. The thickness of the abutting portion 23 (the dimension parallel to the rotation axis direction of the rotation stopper 20) is greater than the thickness of the releasing 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, forming a recess. The second elastic body 902 may be disposed between the actuating portion 21 and the housing 10 to apply a thrust to the actuating portion 21. Alternatively, the second elastic body 902 may also be disposed above the actuating portion 21 to apply a pulling force to the actuating portion 21.

[0115] See also Fig.18 and Fig.19 The cam member 30 may include a capture portion 31, a stop portion 32, a linkage portion 33, and a protrusion 34. The capture portion 31 and the stop portion 32 may extend outward from the rotation center of the cam member 30, respectively. The capture portion 31 may be formed in a substantially "U" shape, so that the clamping column 2 of the server rack can be operably captured or released at the recess (see Fig.21 The linkage portion 33 can extend into the elongated slot 42 of the handle 40 and be limited therein by the elongated slot 42. The limiting portion 32 can abut against the lower side of the handle 40 to keep the handle 40 in a horizontal position (ie, Fig.21 The protrusion 34 is a protrusion radially outward relative to the rotation center of the cam member 30. The protrusion 34 may have a first protrusion surface 341 and a second protrusion surface 342 on both sides in the circumferential direction. The abutment portion 23 may abut the first protrusion surface 341 and the second protrusion surface 342, respectively.

[0116] See also Fig. 9 and Fig.21 , the extension stopper 50 may include an actuating portion 51, an unlocking portion 52, and an abutting portion 53. The actuating portion 51, the unlocking portion 52, and the abutting portion 53 may extend outward from the rotation center of the extension stopper 50, respectively. The upper portion of the actuating portion 51 may be formed in a shape to receive the third elastic body 903, for example, forming a recess. The third elastic body 903 may be disposed between the actuating portion 51 and the housing 10 to apply a thrust to the actuating portion 51. Alternatively, the third elastic body 903 may also be disposed below the actuating portion 51 to apply a pulling force to the actuating portion 51.

[0117] The operation process of the extraction aid 1 will be described below.

[0118] The handle 40 may have an initial position relative to the housing 10 (eg Figure 20-22 As shown), extended position (as shown Figure 26-Figure 28 as shown) and the actuation position (as Figure 29-Figure 31). The handle 40 can translate relative to the housing 10 between the initial position and the extended position. The handle 40 can rotate relative to the housing 10 between the extended position and the actuated position. The rotation of the handle 40 can drive the cam member 30 to rotate.

[0119] Figure 20-22 The handle 40 is shown in an initial position. Figure 20-22 , most of the handle 40 is located in the housing 10, and only the grip portion 41 protrudes from the housing 10. Fig.21 As shown, the first elastic body 901 abuts against the left side of the handle 40 and applies a rightward thrust to the handle 40. Fig.21 The first elastic body 901 is shown as a torsion spring, and the first elastic body 901 can also be a coil spring or other structure that can apply thrust or tension. The abutment portion 53 of the extended stopper 50 abuts against the step portion 45 of the handle 40, so that the handle 40 will not be pushed by the first elastic body 901. The limit pin 43 of the handle 40 is located at the left end of the limit slot 122 of the second housing portion 12 (see Fig.15 and Fig.21 ). The linkage portion 33 of the cam member 30 is located at the right end of the elongated slot 42 of the handle 40. The limiting portion 32 of the cam member 30 abuts against the lower side of the handle 40. The clamping column 2 is located in the capturing portion 31 of the cam member 30. The limiting column 908 passes through the limiting slot 122. The abutting portion 23 of the rotation stopper 20 abuts against the first raised surface 341 of the raised 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 thrust of the third elastic body 903. The release portion 22 of the rotation stopper 20 slightly protrudes 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.

[0120] Figure 23-Figure 25 The handle 40 is shown moving from the initial position to the extended position. Figure 23-Figure 25 When the unlocking portion 52 of the extension stopper 50 is pressed downward, the extension stopper 50 rotates clockwise around its rotation axis, so that the abutting portion 53 moves upward and no longer abuts the step portion 45 of the handle 40. At this time, the first elastic body 901 pushes the handle 40 to translate to the right. The straight section 1222 of the limiting groove 122 and the elongated groove 42 can be set to be parallel to each other or aligned with each other, and the limiting column 908 passing through the elongated groove 42 can be located on the extension line of the straight section 1222. Due to the limiting of the limiting pin 43 by the limiting groove 122 and the limiting of the elongated groove 42 by the limiting column 908, the handle 40 will not deflect during the translation to the right. During the translation of the handle 40, the rotation stopper 20 and the cam member 30 will not rotate.

[0121] Figure 26-Figure 28The handle 40 is shown in the extended position. The handle 40 can move from the initial position to the extended position by relying on the elasticity of the first elastic body 901. Alternatively, the handle 40 can move from the initial position to the extended position by relying on the elasticity of the first elastic body 901 and the pulling force of the operator. Figure 26-Figure 28 When the handle 40 is in the extended position, the handle 40 cannot move further to the right because the limiting column 908 abuts against the left end of the elongated slot 42 and / or the limiting pin 43 abuts against the right end of the straight section 1222 of the limiting slot 122.

[0122] Figure 29-Figure 33 The handle 40 is shown in the actuated position. Fig. 27 , Fig.30 and Fig.33 When the handle 40 is in the extended position, the handle 40 can rotate around the stop column 908, and the stop pin 43 enters the arc section 1221 from the straight section 1222. Due to the rotation of the handle 40, the elongated slot 42 causes the cam member 30 to rotate clockwise by actuating the linkage portion 33. In this process, the capture portion 31 of the cam member 30 applies a thrust to the clamping column 2 to the left. Since the clamping column 2 is fixed on the server bracket, the extraction aid 1 and the server fixed on the extraction aid 1 are pushed to the right by the reaction force of the clamping column 2, thereby leaving the server bracket. At this time, the handle 40 moves to the actuation position. At the same time, during the clockwise rotation of the cam member 30, the abutment portion 23 is pushed by the third elastic body 903, moves from the first raised surface 341 of the raised portion 34 to the second raised surface 342, and prevents the cam member 30 from rotating counterclockwise by abutting the second raised surface 342. At this time, the release portion 22 further extends from the opening on the lower side of the housing 10. When the handle 40 moves from the extended position to the actuated position, the stop pin 43 moves from bottom to top along the arc section 1221 of the stop slot 122, and when the handle 40 reaches the actuated position, the stop pin 43 is at the upper end of the arc section 1221. Fig.31As shown, when the handle 40 reaches the actuation position, the position of the recess 44 of the handle 40 corresponds to the position of the pivot axis of the cam member 30 (i.e., the first shaft spacer 906), so that the handle 40 does not interfere with the first shaft spacer 906 at the actuation position. Depending on the rotation angle required by the handle 40, the handle 40 may not have the recess 44. The rotation angle of the handle 40 from the extended position to the actuation position may be in the range of 20° to 45°, specifically, in the range of 25° to 35°. At this time, due to the limitation of the arc segment 1221 and the pivot axis of the cam member 30, the handle 40 cannot be further rotated clockwise. That is, when the handle 40 is in the actuation position, both the clockwise rotation and the counterclockwise rotation of the handle 40 are blocked, and the arc segment 1221 also blocks the translation of the handle 40. Therefore, once the handle 40 moves to the actuation position, the handle 40 is locked relative to the housing 10. At this time, the server can be pulled with the help of the handle 40 to completely detach the server from the server rack.

[0123] When the handle 40 is in the extended position and / or the actuated position, the distance from the handle portion 41 to the rotation center of the handle 40 (i.e., the stop column 908) is greater than the distance from the linkage portion 33 to the rotation center of the cam member 30 (i.e., the first shaft spacer 906). The distance from the handle portion 41 to the rotation center of the handle 40 is also greater than the distance from the linkage 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 handle portion 41 and transmitting it to the cam member 30, so that the handle 40 can be driven with less force to remove a heavier server from the server rack, achieving a labor-saving effect.

[0124] Specifically, the distance from the grip portion 41 to the rotation center of the handle 40 may be more than 5 times the distance from the linkage portion 33 to the rotation center of the cam member 30, for example, in the range of 6 to 12 times, specifically, 8 or 10 times. The distance from the grip portion 41 to the rotation center of the handle 40 may be more than 5 times the distance from the linkage portion 33 to the rotation center of the handle 40, for example, in the range of 6 to 12 times. Fig. 27 and Fig.30 As shown, since the linkage portion 33 can slide in the elongated slot 42 , when the handle 40 moves between the extended position and the actuated position, the distance from the linkage portion 33 to the rotation center of the handle 40 changes within a certain range.

[0125] When the handle 40 moves from the extended position to the actuated position, the moving distance of the catch portion 31 is set to meet the requirement of separating the server from the server rack.

[0126] When the server needs to be installed in the server rack, the above process can be performed in reverse. Specifically, the server can be first lifted by the handle 40 and moved toward the inside of the server rack. Fig.30 As shown, during the process of the extraction aid 1 and the server moving to the left together, the release portion 22 will be actuated by the collision of the clamping column 2, so that the rotation stopper 20 rotates counterclockwise and no longer abuts the second raised surface 342 (i.e., the unlocked position of the rotation stopper 20). In this way, the cam member 30 can rotate. When the extraction aid 1 and the server move further to the left together, the clamping column 2 is received by the capture portion 31, and the clamping column 2 pushes the cam member 30 to rotate counterclockwise. At this time, the handle 40 can 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 handle 40 is pushed to return from the extended position to the initial position. In this process, the left end of the handle 40 pushes the first elastic body 901 to store elastic potential energy in the first elastic body 901. Once the step portion 45 moves to the left side of the abutment portion 53, the third elastic body 903 pushes the abutment portion 53 to move downward, so that the handle 40 is locked and cannot move to the right. In the initial position, since the elongated slot 42 prevents the cam member 30 from rotating and the clamping column 2 is located in the capture portion 31 , the clamping column 2 actually fixes the extraction aid 1 and the server, so that the extraction aid 1 and the server cannot move relative to the server rack.

[0127] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present disclosure and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the claims of the present application.

[0128] Although the present application has been described with reference to typical embodiments, the terms used are illustrative and exemplary rather than restrictive. Since the present application can be implemented in various forms without departing from the spirit and essence of the present application, it should be understood that the above embodiments are not limited to any of the aforementioned details, but should be interpreted in the broadest sense within the scope defined by the claims, so all changes falling within the claims or their equivalents should be covered by the claims.

Claims

1. A pulling aid, characterized in that: The extraction aid comprises: case; 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 linked with the elongated slot of the handle, Wherein, the handle has an initial position, an extended position and an actuated position relative to the shell, the handle translates relative to the shell between the initial position and the extended position, the handle rotates relative to the shell between the extended position and the actuated position, and the rotation of the handle drives the cam component to rotate.

2. The extraction aid according to claim 1, characterized in that: The cam member includes a linkage portion which is constrained within the elongated slot of the handle.

3. The extraction aid according to claim 2, characterized in that: The handle has a grip portion, and the grip portion is located outside the housing. Wherein, when the handle is in the extended position and the actuated position, the distance from the handle portion to the rotation center of the handle is greater than the distance from the linkage portion to the rotation center of the cam member, and the distance from the handle portion to the rotation center of the handle is greater than the distance from the linkage portion to the rotation center of the handle.

4. The extraction aid according to claim 3, characterized in that: The distance from the grip portion to the rotation center of the handle is more than 5 times the distance from the linkage portion to the rotation center of the cam member, and more than 5 times the distance from the linkage portion to the rotation center of the handle.

5. The extraction aid according to claim 3, characterized in that: The cam member includes a capture portion that is operatively engageable with a bracket.

6. The extraction aid according to claim 2, characterized in that: When the handle is located at the initial position, the linkage portion is located at one end of the elongated slot, and when the handle is located at the extended position, the linkage portion is located at the other end of the elongated slot.

7. The extraction aid according to claim 1, characterized in that: The extraction aid further includes a rotation stopper that is rotatably fixed to the housing and that manipulably prevents the handle from returning from the actuated position to the extended position by preventing the cam member from rotating.

8. The extraction aid according to claim 7, characterized in that: The rotation stop has a locked position in which the rotation stop prevents the cam member from rotating in one direction and an unlocked position in which the rotation stop allows the cam member to rotate.

9. The extraction aid according to claim 8, characterized in that: The rotation stop includes a release portion that can be actuated to change the rotation stop from the locked position to the unlocked position.

10. The extraction aid according to claim 9, characterized in that: When the rotation stopper is in the locked position, the release portion protrudes out of the housing, and the release portion can be actuated in a direction toward the interior of the housing to change the rotation stopper from the locked position to the unlocked position.

11. The extraction aid according to claim 9, characterized in that: The rotation stopper further includes an abutment portion, the cam member includes a protrusion portion, and the rotation stopper prevents the cam member from rotating in the one direction by the abutment portion abutting against one side of the protrusion portion.

12. The extraction aid according to claim 9, characterized in that: The rotation stop is configured to tend to rotate from the unlocked position to the locked position.

13. The extraction aid according to claim 7, characterized in that: The extraction aid further includes an extension stopper that is rotatably fixed to the housing and that manipulably prevents the handle from moving from the initial position to the extended position.

14. The extraction aid according to claim 13, characterized in that: The extraction aid further includes a first elastic body, and the first elastic body applies a force to the handle toward the extended position.

15. The extraction aid according to claim 13, characterized in that: The housing includes a first housing and a second housing, and the handle, the cam member, the rotation stopper, and the extension stopper are disposed between the first housing and the second housing.

16. The extraction aid according to claim 15, characterized in that: At least one of the first shell and the second shell includes a limiting groove, and the handle includes a limiting pin, and the limiting pin is confined in the limiting groove.

17. The extraction aid according to claim 16, characterized in that: The limiting groove includes an arc segment and a straight segment, and the arc segment is formed at one end of the straight segment.

18. The extraction aid according to claim 17, characterized in that: When the handle is located at the extended position, the limit pin is located at the one end of the straight section, and when the handle is located at the actuated position, the limit pin is located at the end of the arc section away from the straight section.

19. The extraction aid according to claim 5, characterized in that: The extraction aid is movably disposed on the bracket, and when the handle moves between the extended position and the actuated position, the cam member is engaged with the bracket and moves relative to the bracket.

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

Images