Adjustable support

Abstract

An adjustable support (10) for an electronic device, comprising: a platform (18) configured to support the electronic device; a column (14) extending between the first end portion and the second end portion; a link assembly (26) that movably supports the platform on the column, where the link assembly is slidably coupled to the column to adjust the height of the platform, and the link assembly includes a plurality of movable links, where the link assembly is movable relative to the column. The plurality of movable links are configured to adjust the tilt of the platform to a plurality of different tilt angles.

Description

[0001] Cross - reference to related applications

[0002] This application claims the priority of U.S. Provisional Patent Application No. 63 / 409,113, filed on September 22, 2022, the entire content of which is incorporated herein by reference. Technical field

[0003] The present invention relates to a support for a device, and more particularly to an adjustable support for an electronic device. Background art

[0004] Electronic devices such as laptops, tablets, or mobile phones are often used in a work environment. Generally, the electronic device is placed on a support structure. Users typically desire to adjust the height or position of the electronic device relative to the desktop for better viewing of the electronic device. However, many support structures for electronic devices are difficult to adjust and require a great deal of effort from the user to adjust the height or position of the electronic device. In addition, many support structures do not allow the range of movement required for a fully ergonomic solution and occupy a large amount of space on the desktop. Summary of the invention

[0005] In one aspect, the present application provides an adjustable support for an electronic device, the adjustable support comprising: a platform configured to support the electronic device; a columnar member extending between a first end and a second end; a linkage assembly that movably supports the platform on the columnar member, wherein the linkage assembly includes a plurality of movable linkages configured to adjust the tilt of the platform to a plurality of different tilt angles.

[0006] In another aspect, the present application provides an adjustable support for an electronic device, the adjustable support comprising: a platform configured to support the electronic device; a columnar member extending between a first end and a second end; a linkage assembly that movably supports the platform on the columnar member, wherein the linkage assembly is slidably coupled to the columnar member to adjust the height of the platform, and wherein the linkage assembly includes a plurality of movable linkages configured to adjust the tilt of the platform to a plurality of different tilt angles.

[0007] In another aspect, the present application provides an adjustable support for an electronic device, the adjustable support comprising: a platform configured to support the electronic device; a columnar member extending between a first end and a second end; and a linkage assembly that movably supports the platform on the columnar member, wherein the linkage assembly is capable of sliding along the longitudinal axis of the columnar member to adjust the height of the platform, and wherein the linkage assembly includes a friction grip that allows the linkage assembly to move freely in an upward direction and restricts the linkage assembly from moving in a downward direction until the applied force overcomes the frictional force provided by the friction grip.

[0008] Other aspects of the invention will become apparent by considering the detailed description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is a top perspective view of an adjustable support attached to a base member.

[0010] Figure 2 is Figure 1 a rear perspective view of the adjustable support.

[0011] Figure 3 is Figure 1 a top perspective view of the adjustable support, with parts removed.

[0012] Figure 4 is Figure 3 a top perspective view of the adjustable support, with parts removed.

[0013] Figure 5 is Figure 3 a right side view of the adjustable support.

[0014] Figure 6 is Figure 3 a left side view of the adjustable support.

[0015] Figure 7 is Figure 3 a side perspective view of the adjustable support, with parts removed.

[0016] Figure 8 is for Figure 3 a side perspective view of the linkage assembly of the adjustable support.

[0017] Figure 9 is Figure 8 a rear perspective view of the linkage assembly.

[0018] Figure 10 is for use with Figure 8Perspective view of a friction gripper for use with the connecting rod assembly.

[0019] Figure 11 is Figure 3 Cross-sectional view taken along line 11-11 through the adjustable support of Figure 7

[0020] Figures 12A to 12C is Figure 1 Side view of the adjustable support moving from the first position to the fourth position.

[0021] Figures 13A to 13D is Figure 1 Side view of the adjustable support moving from the first position to the fourth position along the center of gravity line.

[0022] Figure 14 Perspective top view of another embodiment of the adjustable support.

[0023] Figure 15 is Figure 14 Perspective top view of the adjustable support, with parts removed.

[0024] Figure 16 is Figure 15 Side view of the adjustable support, with parts removed.

[0025] Figure 17 is Figure 15 Side view of the adjustable support, with parts removed.

[0026] Figure 18 is Figure 15 Cross-sectional view taken along line 18-18 through the adjustable support of Figure 15

[0027] Figure 19 Perspective top view of another embodiment of the adjustable support.

[0028] Figure 20 is Figure 19 Perspective top view of the adjustable support, with the platform removed.

[0029] Figure 21 is Figure 20 Side view of the adjustable support.

[0030] Figure 22 Perspective view of the clamp for connecting the adjustable support to the base member.

[0031] Figure 23 Perspective view of another embodiment of the clamp for connecting the adjustable support to the base member.​​

[0032] Figure 24 is Figure 23 The rear perspective view of the clamping member.

[0033] Figure 25 is the clamping member in the extended position Figure 23 The perspective view of the clamping member.

[0034] Figure 26 is the perspective view of another embodiment of the clamping member for connecting an adjustable support member to a base member. Detailed Description

[0035] Before detailing any embodiment of the present invention, it should be understood that the present invention is not limited in its application to the details of the construction and component arrangements set forth in the following description or illustrated in the following drawings. The present invention is capable of other embodiments and of being practiced or carried out in various ways. It should be understood that the description of the specific embodiments is not intended to limit the present disclosure to cover all modifications, equivalents, and alternative arrangements falling within the spirit and scope of the present disclosure. Additionally, it should be understood that the language and terms used herein are for the purpose of description and should not be regarded as limiting.

[0036] Figure 1 An adjustable support member 10 is shown, which is configured to support an electronic device such as a computer, laptop, tablet, mobile phone, or other device. The adjustable support member 10 is coupled to a base member 12. In some embodiments, the base member 12 may include a horizontal base member, such as a desktop or tabletop. In other embodiments, the base member 12 may be a separate platform, which may in turn be supported on a desktop, tabletop, or other surface. In other embodiments, the base member may include a vertical base member, such as a wall or column. Additionally, in other embodiments, the base member may be a privacy compartment or enclosure including multiple walls that defines an internal working area. The adjustable support member 10 provides a fully ergonomic solution for the user and minimizes the space occupied by the adjustable support member 10 on the desktop.

[0037] Refer to Figure 1 and Figure 2, the adjustable support member 10 includes a columnar member 14, a platform 18 for the electronic device, and a linkage assembly for adjusting the height and / or orientation of the platform. The columnar member 14 is supported by a base member 12, and the linkage assembly 26 is movably engaged with the columnar member 14. The platform 18 is supported by the linkage assembly 26 and is movable relative to the columnar member 14 by the linkage assembly 26. The linkage assembly 26 can move the platform 18 to different heights (i.e., in the vertical direction) and can move the platform 18 to different orientations (i.e., different tilt angles), as Figures 12A to 12C shown. In some embodiments, the platform 18 may optionally include platform protrusions 22 to provide additional support for the electronic device and prevent the electronic device from slipping off the platform 18.

[0038] Exemplary embodiments of the adjustable support member 10 are described herein, where some aspects of the columnar member 14, the platform 18, and the linkage assembly are optional features. The columnar member 14 is formed as a hollow tubular member that can accommodate other components of the adjustable support member 10. In some embodiments, the columnar member 14 is formed as a cylindrical or rectangular tubular member. The illustrated columnar member 14 includes a columnar member housing 30 having a columnar member top plate 34, a first columnar member housing portion 38, and a second columnar member housing portion 42. The columnar member top plate 34, the first columnar member housing portion 38, and the second columnar member housing portion 42 together define a columnar member cavity 44. The columnar member 14 includes a first end 46 and a second end 50 opposite the first end 46. A longitudinal axis 54 extends centrally through the columnar member 14 between the first end 46 and the second end 50. The columnar member 14 includes a length defined along the longitudinal axis 54 between the first end 46 and the second end 50.

[0039] As Figure 2 and Figure 3 shown, the columnar member 14 defines a columnar member slot 58. In the illustrated embodiment, the first columnar member housing portion 38 and the second columnar member housing portion 42 define the columnar member slot 58. In other embodiments, the columnar member 14 may be formed of a single housing having a slot 58. As described in more detail below, the linkage assembly 26 extends through the columnar member slot 58 to a distal point away from the columnar member 14 ( Figure 3 and Figure 5 ). In some embodiments, the columnar member 14 may optionally include a printed circuit board (PCB) having a universal serial bus (USB) port or a power hub 62 to provide connection or power to the electronic device ( Figure 6)。In some embodiments, the post 14 may optionally include a hole 66 in the first housing portion 38 of the post. In some embodiments, the hole 66 provides a location for a USB or power line to extend from the post housing 30 and connect to an electronic device (not shown). In these embodiments, the USB or power line may be connected to a USB or power hub 62 (not shown).

[0040] In some embodiments, the post 14 may optionally include a rack 70, which is located in the post 14, and in particular, the rack 70 is located in the post cavity 44 ( Figure 7 ). The rack 70 includes a plurality of teeth, and the plurality of teeth may be directly formed in one of the housing portions 38, 42. Alternatively, the rack 70 may be a separate component positioned within the post cavity 44. As will be described in further detail below, the rack 70 may be used to help generate smooth and consistent movement of the linkage assembly 26. Additionally or alternatively, the rack 70 may optionally be used to help maintain or limit the movement of the linkage assembly 26.

[0041] Continuing to refer to Figure 7 , the post 14 may also optionally include one or more tracks 74. The tracks 74 are located in the post 14, and in particular, the tracks 74 are located in the post cavity 44. The tracks 74 are defined as channels formed within the post 14 and extending in the direction of the longitudinal axis 54. The tracks 74 may extend along most of the length of the post 14, or the tracks 74 may only extend along a portion of the length of the post 14, depending on the desired range of movement of the linkage assembly 26. In the illustrated embodiment, the post 14 defines two tracks 74. In other embodiments, the post 14 defines one or more tracks 74 (e.g., one, two, three, or four). The linkage assembly 26 includes guide rails 136 that engage with the tracks 74 to guide the linkage assembly 26 to move along the post 14 between the first end 46 and the second end 50. The tracks 74 and the guide rails 136 may be used to help guide the linkage assembly 26 to move linearly along the longitudinal axis 54 and prevent the linkage assembly 26 from being "pinched" or "jammed" when the linkage assembly 26 slides along the post 14. Specifically, since the linkage assembly 26 is suspended within the post 14, the linkage assembly 26 may tilt forward and may generate friction (i.e., jam or pinch), thereby reducing the smoothness of the sliding movement of the linkage assembly 26. Therefore, some embodiments of the adjustable support 10 may optionally include the tracks 74 and the guide rails 136 to help reduce some of the friction and stress caused by the cantilever arrangement. It should also be noted that in some embodiments, the guide rails 136 may be positioned within the post 14, while the tracks 74 may be positioned on the linkage assembly 26.

[0042] Return reference Figure 1 and Figure 2 , platform 18 is configured to support the electronic device above a surface. Platform 18 includes a square, rectangular or other suitable shape to support the electronic device. In some embodiments, platform 18 may optionally include ridges or gripping surfaces to hold the electronic device on platform 18. Platform 18 also includes a platform protrusion 22 extending from platform 18. Platform protrusion 22 may also be referred to as a lip portion. Platform protrusion 22 is configured to prevent the electronic device from slipping off the platform. In the illustrated embodiment, platform protrusion 22 may extend at approximately ninety degrees relative to platform 18. In other embodiments, platform protrusion 22 may extend obliquely relative to platform 18.

[0043] Platform 18 is supported on column 14 by linkage assembly 26. Specifically, linkage assembly 26 helps enable platform 18 to move to different heights along longitudinal axis 54. This is achieved by moving the entire linkage assembly 26 up and down relative to column 14 and thus moving platform 18 up and down relative to column 14. Linkage assembly 26 also enables platform 18 to pivotally move to different orientations. This is achieved by moving the various links in linkage assembly 26 to reorient the angle of platform 18. In the illustrated embodiment, linkage assembly 26 is a four-bar linkage assembly, which is composed of four links connected into a closed loop. Linkage assembly 26 is configured to tilt platform 18 to different angles while maintaining a consistent center of gravity 184. As Figures 13A to 13D shown, center of gravity 184 (i.e., the center of gravity of platform 18 and electronic device 180) is maintained generally along a linear horizontal path (i.e., center of gravity line 188). In some embodiments, center of gravity 184 (i.e., the center of gravity of platform 18 and electronic device 180) may be maintained approximately plus or minus 5 mm relative to the linear horizontal path (e.g., center of gravity line 188). By maintaining center of gravity 184 generally along a linear horizontal path, linkage assembly 26 is able to keep platform 18 balanced at various tilt angles without a robust locking assembly. However, in some embodiments, additional or optional locking features may be provided to assist linkage assembly 26.

[0044] Figure 7 and Figure 8The linkage assembly 26 according to an exemplary embodiment is shown. The following description is exemplary, and certain aspects and features of the linkage may vary in other embodiments. For example, the dimensions, shapes, and coupling mechanisms may vary between embodiments. It should be understood that there are various different ways to create the four-bar linkage assembly 26 that is capable of tilting the platform 18 as described. The illustrated embodiment of the linkage assembly 26 is a four-bar linkage that includes a first arm 78, a second arm 80, a mounting plate 84, and a carrier 92. The mounting plate 84 is directly coupled to the platform 18. The carrier 92 is coupled to the columnar member 14 and is capable of sliding vertically along the longitudinal axis 54. In the four-bar linkage assembly 26, the carrier 92 is regarded as the "fixed link" because the carrier 92 is non-rotatable. The first arm 78 and the second arm 80 extend between the carrier 92 and the mounting plate 84, and the first arm 78 and the second arm 80 are configured to move the mounting plate 84 (and the platform 18) relative to the carrier 92 and the columnar member 14. Specifically, the movement of the first arm 78 and the second arm 80 adjusts the tilt angle of the platform 18. The first arm 78 and the second arm 80 can be coupled to the mounting plate 84 and the carrier 92 in various different ways. The first arm 78 and the second arm 80 can also have various different shapes.

[0045] Continuing to refer to Figure 8 and Figure 11 , the first arm 78 includes a first end 96 and a second end 100 that is opposite to the first end 96 ( Figure 11 ). In some embodiments, the first arm 78 can be an L-shaped arm. The first end 96 of the first arm 78 is rotatably coupled to the carrier 92, while the second end 100 of the first arm 78 is rotatably coupled to the mounting plate 84. In some embodiments, the first arm 78 is fixed to the carrier 92 by a pin 104 and is fixed to the mounting plate 84 by a dowel pin 108. As Figure 11 shown, the first arm 78 includes a plurality of first arm teeth 110. The plurality of first arm teeth 110 extend from the first end 96 of the first arm 78. The plurality of first arm teeth 110 engage with a guiding key portion 144 in the carrier 92, as described in more detail below.

[0046] The illustrated embodiment of the second arm 80 may include a Y-shaped arm having a first branch portion 122 and a second branch portion 124. The first branch portion 122 extends between a first end portion 112 and a second end portion 116 opposite the first end portion 112. The second branch portion 124 extends between the first end portion 112 and a third end portion 120 opposite the first end portion 112. The Y-shape of the second arm 80 allows the first arm 78 to nest between the branch portions 122, 124 when the linkage assembly 26 is in the fully folded position, as shown in Figure 12A As shown. This allows the linkage assembly 26 to be stored in a more compact manner (or a thinner profile) when the adjustable support 10 is not in use. However, it should be understood that the second arm 80 may be formed in other shapes. For example, the second arm 80 may include more or fewer branch portions (e.g., one or three). The first end portion 112 of the second arm 80 is rotatably coupled to the carrier 92. A pin 126 may be used to fix the second arm 80 to the carrier 92. The second end portion 116 and the third end portion 120 are coupled to the mounting plate 84. One or more second pins 130 may be used to fix the second end portion 116 and the third end portion 120 of the second arm 80 to the mounting plate 84. The one or more second pins 130 are used to fix the second arm 80 to the mounting plate 84. As shown in Figure 4 and Figure 11 As shown, the second arm 80 includes a plurality of second arm teeth 132. The plurality of second arm teeth 132 extend from the first end portion 112 ( Figure 11 ). The plurality of second arm teeth 132 engage with the guide key portion 144 in the carrier 92, as described in more detail below.

[0047] Referring to Figure 3 and Figure 4 , the mounting plate 84 may optionally include a mounting plate cover 88. The mounting plate 84 is coupled to the first arm 78 and the second arm 80 and is attached to the platform 18. The mounting plate 84 supports the platform 18 on which the electronic device is supported. As shown in Figure 4 As shown, one or more first pins 108 and one or more second pins 130 are used to fix the mounting plate 84 to the first arm 78 and the second arm 80. A plurality of fasteners are used to fix the platform 18 to the mounting plate 84 (not shown). In the illustrated embodiment, the mounting plate 84 is formed as two components attached to the first arm 78 and the second arm 80. In other embodiments, the mounting plate 84 may be formed as one component fixed to the first arm 78 and the second arm 80.

[0048] Referring to Figure 8 and Figure 11, the carrier 92 serves as one of the links in the link assembly 26 for adjusting the tilt angle of the platform 18. The carrier 92 also interacts with the columnar member 14 to adjust the height of the platform 18. As previously described, the carrier 92 serves as the "fixed link" in the four-bar link assembly because the carrier 92 does not pivot or rotate. The carrier 92 may also be referred to as a housing because the carrier 92 supports the other members of the link assembly 26 and may be used to accommodate other components. In the illustrated embodiment, the carrier 92 includes a guide rail 136, friction blocks 140, and a guiding key portion 144( Figure 8 and Figure 9 ). However, other embodiments of the carrier 92 may be different such that in some embodiments, various combinations of these features may be excluded.

[0049] As Figure 8 shown, the carrier 92 includes one or more friction blocks 140 that help control the tilting movement of the platform 18. In the illustrated embodiment, two friction blocks 140 are coupled to the housing. However, in other embodiments, more or fewer friction blocks 140 may be used. The friction blocks 140 respectively engage the first arm 78 and the second arm 80, and the friction blocks 140 provide frictional force to control the rotation of the first arm 78 and the second arm 80 relative to the columnar member 14 respectively. The friction blocks 140 frictionally engage the first arm 78 and the second arm 80 to provide smooth rotation of the first arm 78 and the second arm 80 relative to the columnar member 14 respectively. The friction blocks 140 and the center-of-gravity balance (i.e., as Figures 13A to 13D shown) together help maintain the tilted position of the platform 18 without a firm locking mechanism. Specifically, as Figures 13A to 13D shown, the link assembly 26 is configured to keep the center of gravity 184 generally along a linear horizontal path called the center-of-gravity line 188. The center-of-gravity balance effect allows the tilt of the platform 18 to be maintained mainly by keeping the forces between the link assemblies 26 balanced. In other words, when the user adjusts the tilt of the platform 18, due to the balance of forces on the link assembly and the consistent center of gravity 184, the platform 18 will remain at the desired tilt angle. The friction blocks 140 help maintain this force balance by generating frictional force, thereby reducing the ease with which the first arm 78 and the second arm 80 can rotate. In other words, the link assembly is configured to maintain the tilt angle of the platform based on the balance of forces without using a locking mechanism.

[0050] As Figure 11As shown, the carrier 92 may optionally include guide key portions 144. The guide key portions 144 are coupled to the carrier 92. In the illustrated embodiment, two guide key portions 144 are coupled to the carrier 92. The guide key portions 144 engage the plurality of first arm teeth 110 and the plurality of second arm teeth 132( Figure 11 ). The guide key portions 144 include lip portions 146 that engage the plurality of first arm teeth 110 and the plurality of second arm teeth 132. The guide key portions 144 provide the user with a tactile feedback sound of the rotation of the first arm 78 and the second arm 80 relative to the columnar member 14, respectively. It should be understood that in some embodiments, there is only one guide key portion 144 and one set of teeth 110, 112 for generating tactile feedback. Alternatively, in some embodiments, this feature may be completely omitted. Additionally, in some embodiments, the guide key portions 144 and the teeth 110, 112 may provide functions beyond tactile feedback and may be used as a ratchet pawl mechanism to limit the rotation of the first arm 78 and the second arm 80 (i.e., lock the rotation). In some embodiments, the link assembly 26 may not include the teeth 110, 112 and the guide key portions 144 because the teeth 110, 112 and the guide key portions 144 are optional features.

[0051] As described above, the carrier 92 also interacts with the columnar member 14 to adjust the height of the platform 18. The carrier 92 is movably positioned within the columnar member cavity 44. The carrier 92 may include one or more guide rails 136, one or more friction blocks 140, and / or one or more guide key portions 144 (e.g., one, two, three, or four). The illustrated carrier 92 includes an outer surface 138 that includes the guide rails 136. The guide rails 136 extend along the outer surface 138 of the carrier 92. In the illustrated embodiment, the carrier 92 includes two guide rails 136, however, more or fewer guide rails may be used. The guide rails 136 engage the tracks 74 of the columnar member 14 to guide the carrier 92 of the link assembly within the columnar member 14 along the longitudinal axis 54 between the first end 46 and the second end 50.

[0052] Figure 10 and Figure 11Shows a friction gripper 148 positioned within a carrier 92. The friction gripper 148 helps control the vertical position of the link assembly 26 relative to the column 14 and thus the height of the platform 18. Specifically, the friction gripper 148 provides frictional force to allow the carrier 92 to move along the longitudinal axis 54 (e.g., in the upward direction) or to restrict the carrier 92 from moving along the longitudinal axis 54 (e.g., in the downward direction). The friction gripper 148 uses friction to hold the carrier 92 at a desired height within the column 14 and selectively allows the carrier 92 to move within the column 14. To move the carrier 92 in the downward direction, a force is applied to overcome the frictional force of the friction gripper 148, thereby allowing the link assembly 26 to move to a lower height. For example, a downward force can be applied to the platform 18 to overcome the frictional force of the friction gripper 148, thereby allowing the user to lower the height of the platform 18.

[0053] In the illustrated embodiment, the friction gripper 148 can move more freely in the upward direction than in the downward direction. For example, the friction gripper 148 can move freely in the upward direction, while a greater force is required to move the carrier 92 in the downward direction. Thus, in this example, it is easier to move the platform 18 in the upward direction than in the downward direction. However, in other embodiments, the frictional force applied by the friction gripper 148 can be equal in the upward and downward directions. It should be understood that there are various different ways to create a friction gripper 148 that can apply frictional force to hold the link assembly 26 and the platform 18 at the desired height while allowing the link assembly 26 and the platform 18 to selectively move by applying a force to overcome the frictional force of the friction gripper 148. An exemplary embodiment is described below.

[0054] Figure 10 The exemplary friction gripper 148 shown in includes a bearing 160 such as a one-way bearing to control the movement of the carrier 92 within the column 14. Although there can be different configurations, the illustrated friction gripper 148 includes an eyelet member 152, a pin 156, a bearing 160, a nut 164, and a screw 168. The eyelet member 152 defines an eyelet member hole 154. The eyelet member hole 154 receives the pin 156 and the bearing 160. The bearing 160 can be a one-way bearing such that the bearing 160 rotates freely in one rotational direction and is restricted (or partially restricted) from rotating in the opposite direction. The nut 164 abuts against the eyelet member 152. The screw 168 engages the eyelet member 152 and the nut 164 in a threaded manner. The screw 168 can be rotated to adjust the amount of frictional force around the pin 156 and the bearing 160.

[0055] Referring to Figure 8 and Figure 9 Figure 9

[0056] In operation, the friction gripper 148 controls the rotation of the pinion 172 in one rotational direction. The bearing 160 allows the pinion 172 to freely rotate in a first rotational direction, which allows the linkage assembly 26 to move relative to the columnar member 14 (e.g., upward in a direction toward the first end 46 of the columnar member 14). The bearing 160 restricts the pinion 172 from freely rotating in a second rotational direction opposite to the first rotational direction, which causes the linkage assembly 26 to remain stationary (e.g., restricts or partially restricts movement in a downward direction toward the second end 50 of the columnar member 14). In other words, the friction gripper 148 controls the resistance to a downward force (e.g., a force applied generally parallel to the axis 54 toward the second end 50 of the columnar member 14) applied to the linkage assembly 26. The friction gripper 148 is set to a typical weight rating of the weight of the electronic device (e.g., 3 pounds to 7 pounds). When the user places the electronic device on the platform 18, the friction gripper 148 prevents the linkage assembly 26 from moving toward the base member 12. When the user wants to adjust the height of the electronic device relative to the tabletop, the user applies a downward force that overcomes the set weight rating of the friction gripper 148 to move the platform 18 further toward the base member 12. In some embodiments, the movement of the pinion 172 along the rack 70 allows the linkage assembly 26 to engage the columnar member 14 at a first position relative to the longitudinal axis 54 of the columnar member 14 and at a second position relative to the longitudinal axis 54 of the columnar member 14. The second position is different from the first position.

[0057] Referring to Figures 12A to 12C Figures 12A to 12C Figure 2)。The movement of the link assembly 26 allows the platform 18 to be displaced along the columnar member 14 to different heights. When the user wants to adjust the vertical position of the platform 18, the user grasps the edge of the platform 18 and applies an upward or downward force to the platform 18. When an upward or downward force is applied, the platform 18 is capable of moving relative to the columnar member 14. In the illustrated embodiment, the platform 18 of the adjustable support 10 can be adjusted relative to the base member 12 along the columnar member 14 to be in a plurality of vertical positions.

[0058] Referring to Figures 13A to 13D , the link assembly 26 and the platform 18 can also be adjusted relative to the columnar member 14 to different tilt angles and / or horizontal positions. Figures 13A to 13D The platform 18 is shown at a plurality of different tilt angles. Figure 13A The adjustable support 10 is shown in a fully collapsed position. In this position, the platform 18 is positioned close to the columnar member 14 and is oriented generally aligned with the longitudinal axis 54. Figures 13B to 13D The adjustable support 10 is shown in various extended positions where the platform 18 is pulled away from the columnar member 14 and tilted relative to the longitudinal axis 54. When the user wants to adjust the horizontal position and / or the tilt angle of the platform 18, the user grasps the edge of the platform 18 to horizontally pull or push the platform relative to the columnar member 14 (e.g., right and left in FIG. 12). When a pushing or pulling force is applied, the first arm portion 78 and the second arm portion 80 of the link assembly rotate relative to the carrier 92 to move the platform 18 forward or backward relative to the columnar member 14. The platform 18 can be adjusted from a first position where the platform is angled at a first angle relative to the columnar member 14 to a second position where the platform is angled at a second angle greater than the first angle relative to the columnar member 14. In the illustrated embodiment, the platform 18 can be adjusted to a plurality of different positions to adjust the tilt angle to various tilt angles relative to the columnar member 14.

[0059] Figures 13A to 13DAlso shown is an adjustable support 10 in multiple tilted positions (a) to (d) supporting an exemplary electronic device 180, at which multiple tilted positions (a) to (d), the center of gravity 184 remains generally along a linear horizontal path. When a user adjusts the tilt angle of the platform 18 from the first position (a) to the fourth position (d), the user pulls the platform 18 in a first horizontal direction (e.g., to the right in FIG. 13). The linkage assembly 26 and in particular the first arm portion 78 and the second arm 80 hold the center of gravity 184 generally along the center of gravity line 188 at positions (a) to (d). In other words, at different tilted positions (a) to (d), the center of gravity 184 of the electronic device 180 does not deviate significantly from the center of gravity line 188. In some embodiments, at different tilted positions (a) to (d), the center of gravity 184 may deviate from the center of gravity line 188 by about plus or minus 5 mm. Specifically, during the tilt adjustment of the platform 18, the linkage assembly 26 stabilizes the electronic device 180.

[0060] The axial and rotational movements of the adjustable support 10 allow for a fully ergonomic solution and allow the user to set the electronic device to a desired vertical height, horizontal position, and tilt angle to increase work efficiency. The adjustable support 10 also allows for the use of separate computer peripherals (e.g., a mouse and a keyboard).

[0061] Figure 14 Another embodiment of an adjustable support 210 is shown, which is configured to support an electronic device such as a computer, laptop, tablet, mobile phone, or other device. The adjustable support 210 is coupled to a base member 12. The base member 12 may include a horizontal base member 12, such as a desktop or tabletop ( Figure 14 ). In other embodiments, the base member 12 may include a vertical base member 12, such as a wall or a column. Figure 14 The base member 12 shown in Figure 1 may be similar to the base member 12 described above in

[0062] Refer to Figure 14 and Figure 15, the adjustable support member 210 includes: a columnar member 214 that is connected to the base member 12; a platform 218 that includes a platform protrusion 222; and a link assembly 226 that is movably engaged with the columnar member 214. The columnar member 214 includes a columnar member housing 30 that has a columnar member top plate 234, a first columnar member housing portion 238, and a second columnar member housing portion 242. The columnar member top plate 234, the first columnar member housing portion 238, and the second columnar member housing portion 242 together define a columnar member cavity 244. The columnar member 214 includes a first end 246 and a second end 250 that is opposite the first end 246. A longitudinal axis 254 extends centrally through the columnar member 214 between the first end 246 and the second end 250. The columnar member 214 includes a length defined along the longitudinal axis 254 between the first end 246 and the second end 250.

[0063] Continuing to refer to Figure 14 and Figure 15 , the columnar member 214 defines a columnar member slot 258. In other words, the first columnar member housing portion 238 and the second columnar member housing portion 242 define the columnar member slot 258. As described in more detail below, the link assembly 226 extends through the columnar member slot 258 to a distal point away from the columnar member 214. The columnar member 214 may include a Universal Serial Bus (USB) port or a power hub to provide connection or power to an electronic device, as described above for the adjustable support member 10. The columnar member 214 further includes a rack 262 that is positioned within the columnar member 214, and in particular, the rack 262 is positioned within the columnar member cavity 244 ( Figure 16 ).

[0064] As Figure 16 and Figure 17 shown, the columnar member 214 includes guide rails 264. In the illustrated embodiment, the columnar member 214 includes two guide rails 264. In other embodiments, the columnar member 214 may include one or more guide rails 264 (e.g., one, two, three, or four). The guide rails 264 may be positioned within the columnar member 214, and in particular, the guide rails 264 may be positioned within the columnar member cavity 244. The guide rails 264 extend from near the first end 246 of the columnar member 214 toward the second end 250 of the columnar member 214. In the illustrated embodiment, the guide rails 264 may extend along a majority of the length of the columnar member 214. As described in more detail below, the link assembly 226 includes a channel 310 that engages the guide rails 264 to guide the link assembly 226 within the columnar member 214 relative to the longitudinal axis 254 between the first end 246 and the second end 250.

[0065] Refer toFigure 14 , the platform 218 is movably coupled to the linkage assembly 226. The platform 218 may be similar to the above-described platform 18. The platform 218 is configured to support an electronic device. The platform 218 includes a square, rectangular, or other suitable shape to support the electronic device. The platform 218 may include ridges or gripping surfaces to hold the electronic device on the platform 218. The platform 218 further includes a platform protrusion 222 extending from the platform 218. The platform protrusion 222 may also be referred to as a lip portion. The platform protrusion 222 is configured to prevent the electronic device from slipping off the platform. In the illustrated embodiment, the platform protrusion 222 may extend relative to the platform 218 at approximately ninety degrees. In other embodiments, the platform protrusion 222 may extend obliquely relative to the platform 218.

[0066] Figure 15 and Figure 16 The linkage assembly 226 engaging the columnar member 214 in a movable manner is shown. The linkage assembly 226 includes a first arm portion 266, a second arm portion 270, and a carrier 274. The first arm portion 266 includes a first end 278 and a second end 286 opposite the first end 278 ( Figure 18 ). The first end 278 of the first arm portion 266 is rotatably coupled to the carrier 274. A pin 282 is used to fix the first arm portion 266 to the carrier 274.

[0067] Referring to Figure 17 and Figure 18 , the second arm portion 270 is rotatably coupled to the first arm portion 266. The second arm portion 270 includes a first end 290 and a second end 294 opposite the first end 290 ( Figure 18 ). The first end 290 of the second arm portion 270 is rotatably coupled to the carrier 274. A pin 298 is used to fix the second arm portion 270 to the carrier 274. The second arm portion 270 includes an actuator 302 ( Figure 17 and Figure 18 ). The actuator 302 may also be referred to as a button or a lever. The actuator 302 extends from the second end 294 of the second arm portion 270. The movement of the actuator 302 allows the second arm portion 270 to rotate relative to the first arm portion 266 to adjust the angular position of the first arm portion 266 attached to the platform 218 relative to the columnar member 214.

[0068] As Figure 15 and Figure 16 shown, the carrier 274 is movably positioned within the columnar member 214. In other words, the carrier 274 is movably positioned within the columnar member cavity 244. The carrier 274 may also be referred to as a housing. The carrier 274 includes a channel 310 ( Figure 16 andFigure 17 )。In the illustrated embodiment, the carrier 274 includes two channels 310. In other embodiments, the carrier 274 may include one or more channels 310 (e.g., one, two, three, or four). The carrier 274 includes an outer surface 312 that defines the channels 310. The channels 310 extend along the outer surface 312 of the carrier 274. The channels 310 of the carrier 274 receive the guide rails 264 of the columnar member 214 to guide the carrier 274 within the columnar member 214 along the longitudinal axis 254 between the first end 246 and the second end 250. In other words, the guide rails 264 of the columnar member 214 engage the channels 310 of the carrier 274 to guide the linkage assembly 226 within the columnar member 214 along the longitudinal axis 254 between the first end 246 and the second end 250.

[0069] Figure 16 and Figure 17 Shown is a friction gripper 314 positioned within the carrier 274. The friction gripper 314 may be similar to the friction gripper 148 described above. The friction gripper 314 includes an eyelet member 318, a pin 326, a bearing 330, a nut 334, and a screw 338. The eyelet member 318 defines an eyelet member hole 322. The eyelet member hole 322 receives the pin 326 and the bearing 330. The bearing 330 may include a one-way bearing such that the bearing 330 rotates freely in one rotational direction. The nut 334 abuts against the eyelet member 318. The screw 338 engages the eyelet member 318 and the nut 334 in a threaded manner. The screw 338 is rotatable to adjust the frictional force around the pin 326 and the bearing 330.

[0070] Figure 17 Shown is a pinion 342 coupled to the friction gripper 314. Specifically, the pinion 342 is coupled to the pin 326 of the friction gripper 314. The pinion 342 may be referred to as a gear. The pinion 342 defines a pinion hole and includes a plurality of teeth 346. The pinion hole of the pinion 342 receives the pin 326. The pinion 342 rotatably engages the rack 262 of the columnar member 214. The plurality of teeth 346 engage the rack 262 of the columnar member 214.

[0071] In operation, the friction gripper 314 controls the rotation of the pinion gear 342 in one rotational direction. The friction gripper 314 can operate in a manner similar to the operation of the above-described friction gripper 148. The pinion gear 342 rotates freely in a first rotational direction, which allows the linkage assembly 226 to move relative to the columnar member 214 (e.g., in a direction toward the first end 46 of the columnar member 14). The pinion gear 342 does not rotate freely in a second rotational direction opposite to the first rotational direction, which causes the linkage assembly 226 to remain stationary (e.g., in a direction toward the second end 250 of the columnar member 214). The friction gripper 314 controls the second rotational direction of the pinion gear 342. In other words, the friction gripper 314 controls the resistance to a downward force applied to the linkage assembly 226 (e.g., a force applied generally parallel to the axis 54 toward the second end 250 of the columnar member 214). The friction gripper 314 is set to a typical weight rating of the weight of the electronic device (e.g., 3 pounds to 7 pounds). When the user places the electronic device on the platform 218, the friction gripper 314 engages the pinion gear, thereby preventing the linkage assembly 226 from moving toward the base member 12. When the user wants to adjust the height of the electronic device relative to the tabletop, the user applies a downward force that overcomes the set weight rating of the friction gripper 314 to move the platform 218 further toward the base member 12.

[0072] The adjustable support 210 is capable of moving axially along the longitudinal axis 54 of the columnar member 214 ( Figure 14 ). The linkage assembly 226 allows the platform 218 to move axially along the columnar member 214. When the user wants to adjust the vertical position of the platform 218, the user grasps the edge of the platform 218 and applies an upward or downward force to the platform 218. When an upward or downward force is applied, the platform 218 is capable of moving relative to the columnar member 214. In the illustrated embodiment, the platform 218 of the adjustable support 210 can be adjusted relative to the base member 12 to be in a plurality of vertical positions along the columnar member 214. When the user wants to adjust the rotational position of the platform 218, the user presses the actuator 302 on the second arm 270 to rotate the platform 218 relative to the columnar member 214. When the actuator 302 is pressed, the second arm 270 disengages from the carrier 274 to allow the first arm 266 attached to the platform 218 to rotate relative to the columnar member 14. When the desired position is set, the second arm 270 engages the carrier 274 to allow the first arm 266 attached to the platform 218 to remain stationary relative to the columnar member 214. In the illustrated embodiment, the platform 18 can be adjusted relative to the columnar member 14 to be in a plurality of angular positions.

[0073] Figure 19 and Figure 20Another embodiment of the adjustable support member 410 is shown. The adjustable support member can be used with the base member 12 described above. The adjustable support member 410 includes: a columnar member 414 that is connected to the base member 12; a platform 418; and a hinge assembly 422 for movably coupling the platform 418 to the columnar member 414. The columnar member 414 includes a first end 426 and a second end 430 opposite the first end 426. An axis 434 extends centrally through the columnar member 414 between the first end 426 and the second end 430. The axis 434 can also be referred to as the longitudinal axis. The columnar member 414 includes a length defined between the first end 426 and the second end 430 along the axis 343.

[0074] As Figure 20 shown, the columnar member 414 also includes a track 438 that extends from near the first end 426 toward the second end 430. In the illustrated embodiment, the track 438 extends along a portion of the length of the columnar member 414. In other embodiments, the track 438 extends the entire length of the columnar member 414. In the illustrated embodiment, the columnar member 414 includes two tracks 438. In other embodiments, the columnar member 414 can include one or more tracks 428 (e.g., one, two, three, four, or five tracks). The track 438 includes an edge 442 that engages the hinge assembly 422. The hinge assembly 422 engages the edge 442 of the track 438 to guide the hinge assembly 422 attached to the platform 418 between the first end 426 and the second end 430 relative to the axis 434.

[0075] Continuing to refer to Figure 19 , the platform 418 is movably coupled to the columnar member 414. The platform 418 is configured to support an electronic device. The platform 418 has a square or rectangular shape. The platform 18 defines a platform recess 454. As Figure 19 shown, the platform 418 includes a protrusion 458 that extends from an end 462 of the platform 418. The protrusion 458 can also be referred to as a lip portion. The protrusion 458 is configured to prevent the electronic device from slipping off the platform 418. The protrusion 458 can extend relative to the platform 418 by approximately ninety degrees. In other embodiments, the protrusion 458 can extend obliquely relative to the platform 418.

[0076] Figure 20 and Figure 21Shown is an articulated assembly 422 that is movably coupled to a columnar member 414. The articulated assembly 422 includes a mounting member 466 and an articulating member 470. The mounting member 466 movably couples the articulating member 470 attached to the platform 418 to the columnar member 414. The mounting member 466 extends into a track 438. The mounting member 466 may include a lip portion, a guide rail, or a protrusion that engages the track 438. The mounting member 466 coupled to the articulating member 470 is capable of moving relative to the axis 434 of the columnar member 414. In other words, the articulated assembly 422 attached to the platform 418 is capable of moving relative to the axis 434 of the columnar member 414.

[0077] Continuing to refer Figure 20 and Figure 21 , the articulating member 470 is rotatably coupled to the mounting member 466. A pin 490 is used to fix the articulating member 470 to the mounting member 466. The articulating member 470 includes an articulating member plate 474 and an articulating member housing 478. The articulating member plate 474 is attached to the articulating member housing 478 to define an articulating member cavity 482. The articulating member plate 474 defines a plate recess 486 that is used to receive an actuator 494 as described in more detail below.

[0078] Figure 20 and Figure 21 Shown is an actuator 494 positioned within the articulating member cavity 482. The actuator 494 may also be referred to as a button. The actuator 494 is configured to selectively move the articulating member 470 attached to the platform 418 from a first open position to a second folded position. As Figure 20 shown, the actuator 494 includes a generally rectangular shape having an angled surface 498. The actuator 494 extends through the plate recess 486 and the platform recess 454 such that when the platform 218 is attached to the articulated assembly 422, the angled surface is visible. The angled surface 498 is configured to receive a user's thumb or finger. The actuator 494 is capable of moving (i.e., a downward force) to adjust the position of the platform 418 relative to the columnar member 414. The platform 418 is capable of being adjusted between a first position and a second position. In the first position, the platform 418 is angled relative to the columnar member 414. In the second position, the platform 418 is generally parallel to the columnar member 414. In the second position, the platform 418 is folded relative to the columnar member 414.

[0079] In operation, the adjustable support 410 is configured to support an electronic device. The adjustable support is capable of moving relative to the axis 434 of the columnar member 414. The adjustable support 410 is capable of moving in a rotational direction relative to the axis 434 of the columnar member 414. The hinge assembly 422 permits the platform 418 to rotate relative to the columnar member 414. Movement of the actuator 494 (e.g., downward pressure) permits the hinge member 470 and the platform 418 to rotate together relative to the columnar member 414. In particular, the adjustable support 410 is capable of moving from a first position, in which the platform 418 is angled relative to the columnar member 414, to a second position, in which the platform 418 is folded relative to the columnar member 414. In other words, in the second position, the platform 418 is substantially parallel to the columnar member 414. The adjustable support 410 is configured to support the electronic device in the first position. The adjustable support 410 is configured to store or reduce desktop space in the second position. The axial and rotational movement of the adjustable support 410 permits a fully ergonomic solution and permits the user to position the electronic device to a desired position to improve productivity. The adjustable support 410 also permits the use of separate computer peripherals (e.g., mouse and keyboard) to further improve ergonomics and productivity.

[0080] Figure 22 A clip 500 for connecting an adjustable support to a base member 12 is shown. The clip 500 can be used with the adjustable supports 10, 210, and 410 described above. The clip 500 is correspondingly connected to the second ends 50, 250, and 430 of the columnar members 14, 214, and 414. In one example, the clip 500 is fixed to the edge of a table or desk (e.g., a horizontal base member). In other examples, the clip 500 extends through the table or desk. The clip 500 includes a clip pin 508 that is configured to be inserted into the columnar members 14, 214, and 414. The clip pin 508 is used to fix the clip 500 to the columnar members 14, 214, and 414.

[0081] As Figure 22As shown, the clamp 500 includes a C-shaped bracket 512 that defines a channel 516 for receiving the base member 12. In the illustrated embodiment, the C-shaped bracket 512 can be integrally formed as a single structure. In some embodiments, the C-shaped bracket 512 can be formed as two or more separate structures. In other embodiments, the bracket 512 can include an L-shaped bracket integrally formed as a single structure. Additionally, in other embodiments, the bracket 512 can include an L-shaped bracket formed as two or more separate structures. In one example, the channel 516 receives a table or desk. The clamp 500 includes a fastener 520 that extends into the channel 516 and secures the adjustable support to the base member 12. The fastener 520 includes a flange 524 having a flat surface 528 that engages the base member 12, a shaft 532, and a head 536. The head 536 can be a knob that allows a user to tighten or loosen the clamp 500. In other embodiments, the head 536 can be a screw head that can receive a tool for tightening or loosening the clamp 500. When the adjustable support is positioned for use, the user can use the head to tighten the clamp 500 and secure the adjustable support to the base member 12. In other embodiments, the adjustable support can include other means for coupling to the base member 12.

[0082] Referring to Figure 23 and Figure 24 , in other embodiments, the clamp 500 further includes a protrusion 540. The protrusion 540 can also be referred to as an extendable protrusion. The protrusion 540 defines a slot 544 for receiving the bracket 512 of the clamp 500. During installation, the clamp pin 508 is used to secure the protrusion 178 to the posts 14, 214, and 414. In operation, the adjustable support can be movable relative to the base member 12 in a forward or backward direction. The protrusion 540 is movable between a retracted configuration and an extended configuration ( Figure 23 and Figure 25 ). The protrusion 540 can be moved to the extended configuration such that the adjustable support is located at a first distance relative to the edge of the table or desk. The protrusion 540 can also be moved to the retracted configuration such that the adjustable support is located at a second distance relative to the edge of the table or desk. The first distance is greater than the second distance. The protrusion 540 allows for further adjustment of the adjustable support to provide a fully ergonomic solution, thereby increasing productivity.

[0083] As Figure 25As shown, in other embodiments, the bracket 512 of the gripper 500 further includes a disk-shaped member 548. The disk-shaped member 548 may also be referred to as a rotating disk-shaped member. In the illustrated embodiment, the disk-shaped member 548 is integrally formed with the bracket 512. In other embodiments, the disk-shaped member 548 is formed separately and attached to the bracket 512 by adhesion, welding, fastening, or other connection means. The gripper pin 508 is used to fix the disk-shaped member 548 to the columnar members 14, 214, and 414. The disk-shaped member 548 allows for further adjustment of the adjustable support to provide a fully ergonomic solution, thereby improving production efficiency.

[0084] During installation, the columnar members 14, 214, and 414 are attached to the disk-shaped member 548. In operation, the adjustable support can rotate relative to the base member 12. The adjustable support can rotate 360 degrees relative to the base member 12. In other embodiments, the adjustable support can rotate 45 degrees, 90 degrees, 120 degrees, 180 degrees, or 270 degrees relative to the base member 12. Additionally, in other embodiments, the adjustable support can rotate 45 to 360 degrees relative to the base member 12.

[0085] Although the present invention has been described in detail with reference to certain preferred embodiments, variations and modifications exist within the scope and spirit of one or more of the independent aspects of the invention described.

[0086] The various features of the present invention are set forth in the appended claims.

Claims

1. An adjustable support for an electronic device, the adjustable support comprises: a platform configured to support the electronic device; a columnar member extending between a first end and a second end; a link assembly that movably supports the platform on the columnar member, the link assembly including a plurality of movable links configured to adjust the inclination of the platform to a plurality of different inclination angles.

2. The adjustable support according to claim 1, wherein, the link assembly is configured to maintain a consistent center of gravity along a linear path when the inclination of the platform is adjusted.

3. The adjustable support according to claim 2, wherein, the link assembly is configured to maintain the inclination angle of the platform based on the balance of forces.

4. The adjustable support according to claim 2, wherein, the link assembly includes a four-bar link assembly connected into a closed loop.

5. The adjustable support according to claim 1, wherein, the link assembly includes a first arm and a second arm rotatably coupled to a carrier, and wherein the carrier includes one or more friction blocks engaging the first arm and the second arm to control the rotation of the first arm and the second arm.

6. The adjustable support according to claim 5, wherein, at least one of the first arm and the second arm includes a toothed portion, and wherein the carrier further includes a guiding key portion that can engage the toothed portion to generate a tactile feedback.

7. The adjustable support according to claim 5, wherein, the link assembly further includes a mounting plate coupled to the platform, and the first arm and the second arm extend between the mounting plate and the carrier.

8. The adjustable support according to claim 5, wherein, the second arm is a Y-shaped arm having a first branch and a second branch, and wherein the first arm is configured to: when the link assembly is in a folded position, the first arm is nested between the first branch and the second branch.

9. The adjustable support according to claim 5, wherein, the carrier is positioned within a hollow portion of the columnar member, and wherein the carrier is slidable along the longitudinal axis of the columnar member to adjust the height of the platform.

10. An adjustable support for an electronic device, the adjustable support comprises: a platform configured to support the electronic device; a columnar member extending between a first end and a second end; Linkage assembly, the linkage assembly supports the platform movably on the columnar member, the linkage assembly is slidably coupled to the columnar member to adjust the height of the platform, the linkage assembly includes a plurality of movable linkages, and the plurality of movable linkages are configured to adjust the inclination of the platform to a plurality of different inclination angles.

11. The adjustable support according to claim 10, wherein, the inclination of the platform is maintained in the following manner: by the linkage assembly to maintain a consistent center of gravity along the linear path to balance the forces.

12. The adjustable support according to claim 10, wherein, both the inclination of the platform and the height of the platform are maintained based on friction.

13. The adjustable support according to claim 10, wherein, the linkage assembly includes: a carrier positioned within the columnar member, a first arm rotatably coupled to the carrier, and a second arm rotatably coupled to the carrier.

14. The adjustable support according to claim 13, wherein, the carrier includes one or more friction blocks, and the one or more friction blocks provide friction on the first arm and the second arm to control the rotation of the first arm and the second arm.

15. The adjustable support according to claim 13, wherein, the carrier is capable of sliding along the longitudinal axis of the columnar member to adjust the height of the platform, and wherein the carrier includes a friction gripper for controlling the sliding movement of the carrier within the columnar member.

16. An adjustable support for an electronic device, the adjustable support comprises: a platform configured to support the electronic device; a columnar member extending between the first end and the second end; a linkage assembly that supports the platform movably on the columnar member, and the linkage assembly is capable of sliding along the longitudinal axis of the columnar member to adjust the height of the platform, the linkage assembly includes a friction gripper that allows the linkage assembly to move freely in the upward direction and restricts the movement of the linkage assembly in the downward direction until the applied force overcomes the friction provided by the friction gripper.

17. The adjustable support according to claim 16, wherein, the friction gripper includes a one-way bearing.

18. The adjustable support according to claim 17, wherein, the columnar member includes a rack having a plurality of teeth, and wherein the friction gripper includes a pinion that can engage with the rack to control the movement of the linkage assembly along the longitudinal direction.

19. The adjustable support according to claim 18, wherein, The one-way bearing allows the pinion to rotate freely in a first direction and restricts the rotation of the pinion in a second direction until the applied force overcomes the force of the one-way bearing.

20. The adjustable support according to claim 18, wherein, the columnar member further includes a track, and wherein the link assembly further includes a guide rail that is slidably engageable with the track to guide the link assembly along the longitudinal axis.

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