Extendable controller

Abstract

An extendable controller includes: a handle portion; an elongated bridge that can be extended telescopically relative to the handle portion; and a link member disposed therebetween. An end portion of the elongated bridge is slidably engaged with the link member so as to be extendable telescopically relative to the link member. The link member can move between a retracted position and an extended position relative to the handle portion. The extendable controller further includes a movement control device that is operably connected between the link member and the handle portion to restrict the link member from moving between the retracted position and the extended position when the link member is in the retracted position and the extended position, respectively, wherein the movement control device includes an input interface that is operable to release the link member so that it is not restricted, so that the link member can move between the retracted position and the extended position.

Description

Technical Field

[0001] Embodiments relate generally to an extendable controller, and particularly to a symmetrically extendable controller. Background Art

[0002] In the market, game controllers for mobile phones typically include a clamping mechanism for attaching the mobile phone to the corresponding game controller. Typically, the clamping mechanism uses a single stacking slider so that the left controller is pulled away from the right controller, or vice versa, resulting in an asymmetric configuration of the extended single stacking slider when the left and right controllers are pulled away. Such an asymmetric configuration can result in unequal back support for the mobile phone. Such a game controller can also result in a shaky and unstable experience of clamping the mobile phone for the user, which may annoy the user. In addition, such a game controller may also be unsightly when in use.

[0003] Additionally, a user may have a tablet computer that they would like to interchange with a mobile phone for use with a game controller. However, a tablet computer is typically larger than a mobile phone.

[0004] Therefore, there is a need for a controller that addresses at least some of the above-mentioned issues. Summary of the invention

[0005] According to various embodiments, an extendable controller may be provided, comprising: a handle portion; an elongated bridge, which can be telescopically extended relative to the handle portion along the longitudinal axis of the elongated bridge; and a link member, which is arranged between the handle portion and the elongated bridge. The end portion of the elongated bridge is slidably engaged with the link member so as to be telescopically extended relative to the link member along the longitudinal axis of the elongated bridge. The link member can move between a retracted position and an extended position relative to the handle portion along an extension axis, and the extension axis is parallel to or coincides with the longitudinal axis of the elongated bridge. The extendable controller further comprises a movement control device, which is operably connected between the link member and the handle portion to restrict the link member from moving between the retracted position and the extended position relative to the handle portion when the link member is in the retracted position and the extended position, respectively, wherein the movement control device comprises an input interface, which is operable to release the link member when the link member is in the retracted position and the extended position, respectively, so that the link member can move between the retracted position and the extended position relative to the handle portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] In the accompanying drawings, the same reference numerals generally refer to the same parts throughout the different views. The drawings are not necessarily drawn to scale, but emphasis is generally placed on illustrating the principles of the invention. In the following description, various embodiments are described with reference to the following drawings, in which:

[0007] Figure 1A shows a rear view of an extendable controller in a retracted state according to various embodiments;

[0008] Figure 1B shows an extended state according to various embodiments Figure 1A A rear view of the extendable controller;

[0009] Figure 2A shows a retracted state according to various embodiments Figure 1A A schematic diagram of an extendable controller, wherein an extendable device is illustrated;

[0010] Figure 2B shows an extended state according to various embodiments Figure 2A A schematic diagram of an extendable controller, wherein an extendable device is illustrated;

[0011] Figure 3A shows a perspective view of an extendable controller in a retracted state according to various embodiments;

[0012] Figure 3B shows an extended state according to various embodiments Figure 3A A perspective view of the extendable controller;

[0013] Figure 4A shows a retracted state according to various embodiments Figure 3A An extendable controller wherein the housing is removed;

[0014] Figure 4B shows an extended state according to various embodiments Figure 3A An extendable controller wherein the housing is removed;

[0015] Figure 5A shows a retracted state according to various embodiments Figure 3A A cross-sectional view of a second handle portion of an extendable controller;

[0016] Figure 5B shows an extended state according to various embodiments Figure 3A A cross-sectional view of a second handle portion of an extendable controller;

[0017] Fig. 6A shows a schematic diagram of an extendable controller in a retracted state according to various embodiments;

[0018] Figure 6B shows an extended state according to various embodiments Fig. 6A A schematic diagram of an extendable controller;

[0019] Fig. 7AAccording to various embodiments, Fig. 6A A detailed example of a first movement control device operably connected between the first link member 602 and the first handle portion 110 when the controller is in the retracted state;

[0020] Figure 7B shows a detailed example of a first movement control device operably connected between a first link member and a first handle portion when the first link member extends from the first handle portion according to various embodiments;

[0021] Fig. 8A It shows various embodiments Fig. 7A AA cross-sectional view of the first mobile control device;

[0022] Figure 8B It shows various embodiments Fig. 7A An example of a cam track of a first mobile control device; and

[0023] Fig. 9A and Fig. 9B It shows various embodiments Fig. 7A BB cross-sectional view of the first mobile control device. DETAILED DESCRIPTION

[0024] The embodiments described below in the context of an apparatus are equally applicable to the corresponding method, and vice versa.In addition, it will be understood that the embodiments described below may be combined, for example, part of one embodiment may be combined with part of another embodiment.

[0025] It should be understood that when used in the following description, the terms "upper", "above", "top", "bottom", "lower", "side", "rear", "left", "right", "front", "lateral", "side", "upward", "downward", etc. are used for convenience and to help understand relative positions or directions, and are not intended to limit the orientation of any device or structure or any part of any device or structure. In addition, the singular terms "a", "an", and "the" include plural references unless the context clearly indicates otherwise. Similarly, the word "or" is intended to include "and" unless the context clearly indicates otherwise.

[0026] Various embodiments relate to an extendable controller. In particular, various embodiments relate to a symmetrically or asymmetrically extendable controller. According to various embodiments, the controller may be a game controller for a portable electronic device. According to various embodiments, the portable electronic device may include a smart phone, a mobile phone, a tablet computer, or any suitable handheld, lightweight electronic device. According to various embodiments, the extendable controller may be configured to extend or pull apart so as to receive or hold or accommodate a portable electronic device therebetween, so that the portable electronic device may be removably attached or fixed or coupled to the extendable controller. According to various embodiments, the extendable controller may extend or pull apart in a symmetrical manner so that the middle portion of the extendable controller may remain in the middle, regardless of whether the extendable controller is in a retracted state, or is being extended, or is in an extended state. Therefore, the two opposite side portions of the extendable controller on opposite sides of the middle portion of the extendable controller may extend (or pull apart) and retract in a synchronous (or simultaneous) and consistent (or symmetrical) manner relative to the middle portion, so that the middle portion may remain in the middle all the time. According to various embodiments, the extendable controller may be capable of two-step extension. For example, by using the first step extension, the extendable controller may be used for smaller-sized portable electronic devices such as mobile phones or smart phones. By using the first extension and the second extension, the extendable controller can be used for larger sized portable electronic devices such as tablet computers, etc. According to various other embodiments, the extendable controller can also be extended or pulled apart in an asymmetrical manner.

[0027] The following examples relate to various embodiments.

[0028] Example 1 is an extendable controller, comprising:

[0029] a first handle portion having a first bridge portion extending from a first handle body portion;

[0030] a second handle portion having a second bridge portion extending from a second handle body portion;

[0031] an elongated bridge, wherein a first half of the elongated bridge is in sliding engagement with a first bridging portion of the first handle portion along a longitudinal axis of the elongated bridge, and a second half of the elongated bridge is in sliding engagement with a second bridging portion of the second handle portion along the longitudinal axis of the elongated bridge; and

[0032] an extendable device interconnecting the elongated bridge, the first handle portion, and the second handle portion in a manner to extend and retract the first handle portion and the second handle portion in unison in opposite directions relative to the elongated bridge along an extension axis, the extension axis being parallel to or coincident with the longitudinal axis of the elongated bridge,

[0033] The extendable device includes

[0034] A double reciprocating opposite motion carrier system, the double reciprocating opposite motion carrier system is located in the slender bridge, the double reciprocating opposite motion carrier system includes

[0035] a first reciprocating carriage movable relative to the elongated bridge and along a first carriage path within the elongated bridge,

[0036] a second reciprocating carriage movable relative to the elongated bridge along a second carriage path and within the elongated bridge, and

[0037] an opposing motion mechanism interconnecting the first reciprocating carrier and the second reciprocating carrier, the opposing motion mechanism being configured to move the first reciprocating carrier and the second reciprocating carrier in opposite directions relative to an extension axis of the extendable device,

[0038] a first elongated member having a first end portion coupled to the first handle portion and a second end portion coupled to the first reciprocating carrier of the dual reciprocating opposing motion carrier system, and

[0039] A second elongated member has a first end portion coupled to the second handle portion and a second end portion coupled to the second reciprocating carrier of the dual reciprocating opposing motion carrier system.

[0040] In Example 2, the subject matter of Example 1 can optionally include that the first carrier path and the second carrier path can be parallel to the extension axis and located on opposite sides of the extension axis.

[0041] In Example 3, the subject matter of Example 2 can optionally include that the first carrier path and the second carrier path can be equal in length and aligned with each other.

[0042] In Example 4, the subject matter of any one of Examples 1 to 3 may optionally include: the opposite motion mechanism may include

[0043] a first pulley rotatably coupled to a first end portion of the elongated bridge in a rotatable manner about a first rotation axis perpendicular to the extension axis,

[0044] a second pulley rotatably coupled to the second end portion of the elongated bridge rotatably about a second rotation axis perpendicular to the extension axis, the second rotation axis being parallel to the first rotation axis, and

[0045] A continuous endless belt, the continuous endless belt is wrapped around the first pulley and the second pulley,

[0046] The first reciprocating carrier is located at a first section of the continuous endless belt, and the second reciprocating carrier is located at a second section of the continuous endless belt, and the first section of the continuous endless belt and the second section of the continuous endless belt are located on opposite sides of the cross-extension axis of the opposing motion mechanism.

[0047] In Example 5, the subject matter of Example 4 can optionally include that the first elongated member can be parallel to the extension axis, and the second elongated member is parallel to the extension axis.

[0048] In Example 6, the subject matter of Example 5 may optionally include

[0049] a first guide pin disposed at a first end portion of the elongated bridge, and

[0050] a second guide pin disposed at a second end portion of the elongated bridge,

[0051] wherein the first elongated member may include an elongated slot extending longitudinally along the length of the first elongated member, and the first guide pin may be assembled through the elongated slot of the first elongated member to guide the longitudinal movement of the first elongated member,

[0052] The second elongated member may include an elongated slot extending longitudinally along the length of the second elongated member, and the second guide pin may be assembled through the elongated slot of the second elongated member to guide the longitudinal movement of the second elongated member.

[0053] In Example 7, the subject matter of any one of Examples 4 to 6 can optionally include that the continuous endless belt can be a toothed belt, and wherein each of the first pulley and the second pulley can be a toothed pulley.

[0054] In Example 8, the subject matter of any one of Examples 4 to 7 can optionally include that the continuous endless belt can be made of thermoplastic polyurethane (TPU), polyurethane (PU), or styrene-ethylene-butylene-styrene (SEBS).

[0055] In Example 9, the subject matter of any one of Examples 1 to 8 may optionally include:

[0056] The first reciprocating carrier may include an interlocking device and the second end portion of the first elongated member may include a complementary interlocking device, wherein the interlocking device of the first reciprocating carrier and the complementary interlocking device of the first elongated member may interlock with each other to couple the second end portion of the first elongated member to the first reciprocating carrier, and the second reciprocating carrier may include the interlocking device, and

[0057] The second end portion of the second elongate member may include complementary interlocking means, wherein the interlocking means of the second reciprocating carrier and the complementary interlocking means of the second elongate member may interlock with each other to couple the second end portion of the second elongate member to the second section of the continuous endless belt.

[0058] In Example 10, the subject matter of Example 9 may optionally include: the interlocking means of the first reciprocating carrier may be a protrusion and the complementary interlocking means of the first slender member may be a recess, and the interlocking means of the second reciprocating carrier may be a protrusion and the complementary interlocking means of the second slender member may be a recess.

[0059] In Example 11, the subject matter of any one of Examples 1 to 10 may optionally include: the extendable device may further include: a first biasing element connected between the first handle portion and the first end portion of the slender bridge, the first biasing element being configured to bias to prevent the first handle portion from extending from the slender bridge along the extension axis; and a second biasing element connected between the second handle portion and the second end portion of the slender bridge, the second biasing element being configured to bias to prevent the second handle portion from extending from the slender bridge along the extension axis.

[0060] In Example 12, the subject matter of Example 11 can optionally include that each of the first biasing element and the second biasing element can be a tension spring or a traction spring.

[0061] In Example 13, the subject matter of Example 11 or 12 can optionally include that the first biasing element and the first reciprocating carrier can be located on opposite sides of the relative motion mechanism relative to the extension axis, and the second biasing element and the second reciprocating carrier can be located on opposite sides of the relative motion mechanism relative to the extension axis.

[0062] In Example 14, the subject matter of any of Examples 1 to 13 can optionally include that the first bridging portion can be a sleeve-like structure mounted on the first half of the slender bridge, and the second bridging portion can be a sleeve-like structure mounted on the second half of the slender bridge.

[0063] In Example 15, the subject matter of any one of Examples 1 to 14 can optionally include a cable extending between the first handle portion and the second handle portion.

[0064] In Example 16, the subject matter of Example 15 can optionally include that the cable can extend along the first bridging portion, the elongated bridge, and the second bridging portion.

[0065] In Example 17, the subject matter of Example 15 or 16 can optionally include that the cable can include a flexible flat cable, a flexible cable, a ribbon cable, a coaxial cable, or a wire.

[0066] Example 18 is an extendable controller comprising:

[0067] a first handle portion having a first bridge portion extending from a first handle body portion;

[0068] a second handle portion having a second bridge portion extending from a second handle body portion;

[0069] an elongated bridge, wherein a first half of the elongated bridge is in sliding engagement with a first bridging portion of the first handle portion along a longitudinal axis of the elongated bridge, and a second half of the elongated bridge is in sliding engagement with a second bridging portion of the second handle portion along the longitudinal axis of the elongated bridge; and

[0070] an extendable device interconnecting the elongated bridge, the first handle portion, and the second handle portion so as to extend and retract the first handle portion and the second handle portion in unison and synchronously in opposite directions relative to the elongated bridge along an extension axis, the extension axis being parallel to or coincident with a longitudinal axis of the elongated bridge,

[0071] The extendable device includes

[0072] a first pulley rotatably coupled to a first end portion of the elongated bridge in a rotatable manner about a first rotation axis perpendicular to the extension axis,

[0073] a second pulley rotatably coupled to the second end portion of the elongated bridge in a rotatable manner about a second rotation axis perpendicular to the extension axis, the second rotation axis being parallel to the first rotation axis,

[0074] a continuous endless belt, the continuous endless belt being looped around the first pulley and the second pulley,

[0075] a first elongated member disposed parallel to the extension axis, the first elongated member having a first end portion coupled to the first handle portion and a second end portion coupled to the first segment of the continuous endless band, and

[0076] A second slender member is arranged parallel to the extension axis, and the second slender member has a first end portion connected to the second handle portion and a second end portion connected to the second segment of the continuous endless band, the first segment of the continuous endless band and the second segment of the continuous endless band are located on opposite sides of the continuous endless band across the extension axis.

[0077] In Example 19, the subject matter of Example 18 may optionally include: the extendable device may further include

[0078] a first biasing element connected between the first handle portion and the first end portion of the elongated bridge, the first biasing element being configured to bias to prevent the first handle portion from extending from the elongated bridge along the extension axis, and

[0079] A second biasing element is connected between the second handle portion and the second end portion of the elongated bridge, the second biasing element being configured to bias to prevent the second handle portion from extending from the elongated bridge along the extension axis.

[0080] In Example 20, the subject matter of Example 18 or 19 can optionally include that each of the first biasing element and the second biasing element can be a tension spring or a traction spring.

[0081] In Example 21, the subject matter of any one of Examples 18 to 20 may optionally include:

[0082] The first section of the continuous endless belt may include an interlocking device, and the second end portion of the first elongated member may include a complementary interlocking device, wherein the interlocking device of the first section of the continuous endless belt and the complementary interlocking device of the first elongated member can interlock with each other so as to couple the second end portion of the first elongated member to the first section of the continuous endless belt, and

[0083] The second section of the continuous endless belt may include an interlocking device, and the second end portion of the second slender member may include a complementary interlocking device, wherein the interlocking device of the second section of the continuous endless belt and the complementary interlocking device of the second slender member can be interlocked with each other so as to connect the second end portion of the second slender member to the second section of the continuous endless belt.

[0084] In Example 22, the subject matter of Example 21 may optionally include:

[0085] The interlocking means of the first section of the continuous endless band may comprise a protrusion and the complementary interlocking means of the first elongate member may comprise a notch, and

[0086] The interlocking means of the second section of the continuous endless band may comprise a protrusion and the complementary interlocking means of the second elongate member may comprise a notch.

[0087] In Example 23, the subject matter of any one of Examples 18 to 22 can optionally include that the continuous endless belt can be a toothed belt, and each of the first pulley and the second pulley can be a toothed pulley.

[0088] In Example 24, the subject matter of any one of Examples 18 to 23 may optionally include:

[0089] a first guide pin disposed at a first end portion of the elongated bridge, and

[0090] a second guide pin disposed at a second end portion of the elongated bridge,

[0091] wherein the first elongated member may include an elongated slot extending longitudinally along the length of the first elongated member, and the first guide pin is assembled through the elongated slot of the first elongated member to guide the longitudinal movement of the first elongated member,

[0092] The second elongated member may include an elongated slot extending longitudinally along the length of the second elongated member, and the second guide pin is assembled through the elongated slot of the second elongated member to guide the longitudinal movement of the second elongated member.

[0093] In Example 25, the subject matter of any of Examples 18 to 24 can optionally include that the first bridging portion can be a sleeve-like structure mounted on the first half of the slender bridge, and the second bridging portion can be a sleeve-like structure mounted on the second half of the slender bridge.

[0094] In Example 26, the subject matter of any one of Examples 18 to 25 can optionally include a cable extending between the first handle portion and the second handle portion.

[0095] In Example 27, the subject matter of Example 26 can optionally include that the cable can extend along the first bridging portion, the elongated bridge, and the second bridging portion.

[0096] In Example 28, the subject matter of Example 26 or 27 can optionally include that the cable can include a flexible flat cable, a flexible cable, a ribbon cable, a coaxial cable, or a wire.

[0097] Example 29 is an extendable controller comprising:

[0098] handle part;

[0099] an elongated bridge that is telescopically extendable relative to the handle portion along a longitudinal axis of the elongated bridge;

[0100] a link member disposed between the handle portion and the elongated bridge, wherein an end portion of the elongated bridge is slidably engaged with the link member so as to be telescopically extendable relative to the link member along a longitudinal axis of the elongated bridge, wherein the link member is movable relative to the handle portion between a retracted position and an extended position along an extension axis that is parallel to or coincident with the longitudinal axis of the elongated bridge; and

[0101] A movement control device is operably connected between the link member and the handle portion to restrict the movement of the link member relative to the handle portion between the retracted position and the extended position when the link member is respectively in the retracted position and the extended position, wherein the movement control device includes an input interface, and the input interface is operable to release the link member from being restricted when the link member is respectively in the retracted position and the extended position, so that the link member can move relative to the handle portion between the retracted position and the extended position.

[0102] In Example 30, the subject matter of Example 29 may optionally include: the moving control device may include a translation cam mechanism, wherein the translation cam mechanism may include a cam plate fixedly arranged at the connecting rod member and a follower associated with the handle portion, wherein the follower may be immovable relative to the handle portion in a direction parallel to an extension axis of the connecting rod member relative to the handle portion.

[0103] In Example 31, the subject matter of Example 30 may optionally include: the cam plate may include a cam track, the cam track having a first recess at a first end of the cam track and a second recess at a second end of the cam track, the first end of the cam track and the second end of the cam track being opposite to each other relative to an extension axis of the connecting rod member, wherein when the follower falls into the first recess of the cam track, the connecting rod member can be restrained in a retracted position, and when the follower falls into the second recess of the cam track, the connecting rod member can be restrained in an extended position.

[0104] In Example 32, the subject matter of Example 31 may optionally include: the cam track may include a closed-loop track, wherein the closed-loop track may include four straight line segments arranged in a diamond configuration, wherein the first pocket and the second pocket may be located at two opposite corners of the diamond configuration.

[0105] In Example 33, the subject matter of Example 32 may optionally include: the cam track may include a first straight line segment from the first pocket to the second pocket, followed by a second straight line segment, wherein the cam track may include a cam profile having a sharp rise at a transition between the first pocket and the first straight line segment and a continuous gradual return toward the second pocket along the first straight line segment and the second straight line segment.

[0106] In Example 34, the subject matter of Example 33 may optionally include: the sharp rise at the transition between the first recess and the first straight section may be in the form of a wall or steep surface extending along the corresponding side of the first recess so as to serve as a stop that blocks the follower from crossing from the first recess to the first straight section when the follower is in the first recess so as to limit the link member when the link member is in the retracted position.

[0107] In Example 35, the subject matter according to Example 34 may optionally include: the input interface of the mobile control device may be operable to lift the follower above a sharp rise to cross from the first recess to the first straight line segment so as to release the link member so that it is not restricted, so that the link member can be moved relative to the handle portion and the follower follows along the first straight line segment and the second straight line segment.

[0108] In Example 36, the subject matter of Example 35 may optionally include: the cam profile may include a sharp drop at a transition between the second straight section and the second pocket, wherein, when the follower crosses the sharp drop into the second pocket, the sharp drop may serve as a stopper to block the follower from crossing from the second pocket back to the second straight section so as to confine the follower in the second pocket, thereby confining the link member when the link member is in the extended position.

[0109] In Example 37, the subject matter of any one of Examples 33 to 36 may optionally include: the closed-loop track may include a third straight line segment from the second pocket to the first pocket, followed by a fourth straight line segment, wherein the cam profile of the closed-loop track may have an additional sharp rise at the transition between the second pocket and the third straight line segment and an additional continuous gradual return toward the first pocket along the third straight line segment and the fourth straight line segment.

[0110] In Example 38, the subject matter of Example 37 may optionally include: an additional sharp rise at the transition between the second recess and the third straight line segment may be in the form of a wall or steep surface extending along the corresponding side of the second recess so as to serve as a stop that blocks the follower from crossing from the second recess to the third straight line segment when the follower is in the second recess so as to limit the link member when the link member is in the extended position.

[0111] In Example 39, the subject matter of Example 38 may optionally include: the input interface of the mobile control device may be operable to lift the follower above another sharp rise to cross from the second pit to the third straight line segment so as to release the link member so that it is not restricted, so that the link member can be moved relative to the handle portion and the follower follows along the third straight line segment and the fourth straight line segment.

[0112] In Example 40, the subject matter of Example 39 may optionally include: the cam profile may include an additional sharp drop at the transition between the fourth straight line segment and the first pocket, wherein, when the follower crosses the additional sharp drop to enter the first pocket, the additional sharp drop may serve as a stop to block the follower from crossing from the first pocket back to the fourth straight line segment so as to confine the follower in the first pocket, thereby confining the link member when the link member is in the retracted position.

[0113] In Example 41, the subject matter according to any one of Examples 31 to 40 may optionally include: the movement control device may include a follower biasing member, which is operably connected between the handle portion and the follower to apply a biasing force on the follower so as to push the tip of the follower toward the cam track.

[0114] In Example 42, the subject matter of Example 41 may optionally include: the input interface of the mobile control device may include a pusher, which is configured to engage the follower so that the input interface is operable to drive the pusher to apply a force on the follower to offset the biasing force of the follower biasing member so as to lift the tip of the follower away from the cam track.

[0115] In Example 43, the subject matter of Example 41 or 42 may optionally include: the follower biasing member may include a leaf spring or a torsion spring, which is connected to the handle portion, and wherein the legs of the leaf spring or torsion spring engage with the follower to apply a biasing force on the follower.

[0116] In Example 44, the subject matter according to any one of Examples 29 to 43 may optionally include a motion assist device, which is operably connected between the link member and the handle portion to actuate the link member when the input interface is operated to release the link member so that it is not restricted, so as to automatically move the link member between a retracted position and an extended position relative to the handle portion.

[0117] In Example 45, the subject matter of Example 44 may optionally include: the motion assist device may include a link member biasing sub-device connected between the handle portion and the link member, wherein, when the link member is in the retracted position, the link member biasing sub-device can apply a biasing force to urge the link member to move from the retracted position toward the extended position relative to the handle portion.

[0118] In Example 46, the subject matter of Example 45 can optionally include that when the link member is in the extended position, the link member biasing subassembly can apply a biasing force to urge the link member to move relative to the handle portion from the extended position toward the retracted position.

[0119] In Example 47, the subject matter of Example 45 may optionally include: the link member biasing sub-device may include a pair of coil springs, the pair of coil springs being arranged on opposite sides of the link member across the extension axis, wherein a first end of each coil spring may be connected to the link member, and a second end of each coil spring may be connected to the handle portion, wherein when the link member is in the retracted position, each coil spring may be in a tensioned state and may be oriented to form an acute angle relative to the extension axis, whereby the second end of each coil spring may be located in front of the first end of each coil spring relative to the extension direction along the extension axis.

[0120] In Example 48, the subject matter of Example 46 can optionally include: the link member biasing subassembly can include a pair of coil springs disposed on opposite sides of the cross-extension axis of the link member, wherein a first end of each coil spring can be pivotally coupled to the link member and a second end of each coil spring can be pivotally coupled to the handle portion,

[0121] wherein, when the link member is in the retracted position, each coil spring may be in a tensioned state and may be oriented to form an acute angle relative to the extension axis, whereby the second end of each coil spring may be located in front of the first end of each coil spring relative to the extension direction along the extension axis,

[0122] Wherein, when the link member in the retracted position is released via the input interface so that it is not restricted, each coil spring can be contracted to apply a biasing force to move the link member from the retracted position toward the extended position along the extension axis, each coil spring pivots about its second end relative to the handle portion, and as the extension momentum continues to move the link member toward the extended position until the link member is restricted in the extended position, each coil spring extends with its first end extending away from the second end along the extension direction,

[0123] wherein, when the link member is in the extended position, each coil spring may be in a tensioned state and may be oriented to form an acute angle relative to the extension axis, whereby the second end of each coil spring may be located in front of the first end of each coil spring relative to a retraction direction along the extension axis, the retraction direction and the extension direction being opposite directions along the extension axis,

[0124] Wherein, when the link member in the extended position is released via the input interface so that it is not restricted, each coil spring can contract to apply a biasing force to move the link member from the extended position toward the retracted position along the extension axis, each coil spring pivots about its second end relative to the handle portion, and as the retraction momentum continues to move the link member toward the retracted position until the link member is restricted in the retracted position, each coil spring extends with its first end extending away from the second end along the retraction direction.

[0125] Figure 1A A rear view of the extendable controller 100 is shown in a retracted state according to various embodiments. Figure 1B shows an extended state according to various embodiments Figure 1A1 is a rear view of the extendable controller 100. According to various embodiments, the extendable controller 100 may include a first handle portion 110 and a second handle portion 120. According to various embodiments, the extendable controller 100 may include an elongated bridge 130 disposed between the first handle portion 110 and the second handle portion 120. According to various embodiments, the elongated bridge 130 may be a long structure that serves as an intermediate piece that bridges (or joins together) the first handle portion 110 and the second handle portion 120. The first handle portion 110 may be slidably engaged with a first half of the elongated bridge 130 so as to be able to slide relative to the elongated bridge 130 along the longitudinal axis of the elongated bridge 130, and the second handle portion 120 may be slidably engaged with a second half of the elongated bridge 130 so as to be able to slide relative to the elongated bridge 130 along the longitudinal axis of the elongated bridge 130. According to various embodiments, the first half of the elongated bridge 130 may be half of the length of the elongated bridge, and the second half of the elongated bridge 130 may be the other half of the length of the elongated bridge. According to various embodiments, the first handle portion 110 and the second handle portion 120 can slide away from each other in a synchronous (or simultaneous) and consistent (or symmetrical) manner relative to the elongated bridge 130, so that the midpoint 139 of the elongated bridge 130 can remain in the middle of the extendable controller 100, regardless of whether the extendable controller 100 is in the retracted state, or is being extended, or in the extended state. Similarly, when retracting from the extended state to the retracted state, the first handle portion 110 and the second handle portion 120 can slide toward each other in a synchronous and consistent manner relative to the elongated bridge 130. Therefore, the first handle portion 110 and the second handle portion 120 can be synchronously (or simultaneously), consistent (or symmetrical) extended and retracted relative to the elongated bridge 130 in opposite directions relative to the longitudinal axis 131 of the elongated bridge 130. Thus, during extension, the first handle portion 110 and the second handle portion 120 can move outwardly away from each other in opposite directions relative to the slender bridge 130, and during retraction, the first handle portion 110 and the second handle portion 120 can move inwardly toward each other in opposite directions relative to the slender bridge 130.

[0126] According to various embodiments, the first handle portion 110 may include a first handle body portion 112 and a first bridge portion 114 extending from the first handle body portion 112. Therefore, the first bridge portion 114 may be similar to an attachment coupled to the first handle body portion 112 to form the first handle portion 110. According to various embodiments, the second handle portion 120 may include a second handle body portion 122 and a second bridge portion 124 extending from the second handle body portion 122. Therefore, the second bridge portion 124 may be similar to an attachment coupled to the second handle body portion 122 to form the second handle portion 120.

[0127] According to various embodiments, the first bridge portion 114 of the first handle portion 110 can be slidably engaged with the first half of the elongated bridge 130 such that the first handle portion 110 can slide relative to the elongated bridge 130 along the longitudinal axis 131 of the elongated bridge 130. Thus, in the retracted state, the first bridge portion 114 of the first handle portion 110 can overlap the first half of the elongated bridge 130. Additionally, in the extended state, the first bridge portion 114 of the first handle portion 110 can longitudinally extend out from the first half of the elongated bridge 130 such that the first handle body portion 112 moves outward and away from the elongated bridge 130. Thus, from the retracted state to the extended state, the distance from the first handle body portion 112 to the midpoint 139 of the elongated bridge 130 increases.

[0128] According to various embodiments, the second bridge portion 124 of the second handle portion 120 can be slidably engaged with the second half of the elongated bridge 130 such that the second handle portion 120 can slide relative to the elongated bridge 130 along the longitudinal axis 131 of the elongated bridge 130. Thus, in the retracted state, the second bridge portion 124 of the second handle portion 120 can overlap the second half of the elongated bridge 130. In the extended state, the second bridge portion 124 of the second handle portion 120 can extend longitudinally out of the second half of the elongated bridge 130 such that the second handle body portion 122 moves outward and away from the elongated bridge 130. Thus, from the retracted state to the extended state, the distance from the second handle body portion 122 to the midpoint 139 of the elongated bridge 130 increases.

[0129] According to various embodiments, when the first handle portion 110 and the second handle portion 120 are synchronously (or simultaneously) extended from the elongated bridge 130 in opposite directions, the first bridge portion 114 of the first handle portion 110 and the second bridge portion 124 of the second handle portion 120 may synchronously (or simultaneously) longitudinally move away from each other and slide outward relative to the elongated bridge 130 in a consistent (or symmetrical) manner to extend the distance separating the first handle body portion 112 from the second handle body portion 122. According to various embodiments, when the first handle portion 110 and the second handle portion 120 are synchronously (or simultaneously) retracted relative to the elongated bridge 130 in opposite directions, the first bridge portion 114 of the first handle portion 110 and the second bridge portion 124 of the second handle portion 120 may synchronously (or simultaneously) longitudinally move toward each other and slide inward relative to the elongated bridge 130 in a consistent (or symmetrical) manner to shorten the distance separating the first handle body portion 112 from the second handle body portion 122.

[0130] Figure 2A A schematic diagram of the extendable controller 100 in a retracted state is shown, wherein the extendable device 140 is illustrated, according to various embodiments. Figure 2BA schematic diagram of the extendable controller 100 in an extended state is shown according to various embodiments, wherein the extendable device 140 is illustrated.

[0131] According to various embodiments, the extendable controller 100 may include an extendable device 140. According to various embodiments, the extendable device 140 may interconnect the elongated bridge 130, the first handle portion 110, and the second handle portion 120. According to various embodiments, the extendable device 140 may provide or establish a relationship and / or association between the elongated bridge 130, the first handle portion 110, and the second handle portion 120, so that they (i.e., the elongated bridge 130, the first handle portion 110, and the second handle portion 120) may synchronously (or simultaneously) interoperate or work together cooperatively to extend (or retract) and retract the extendable controller 100 in a consistent (or symmetrical) manner relative to the center of the extendable controller 100 (e.g., the midpoint 139 of the elongated bridge 130). Thus, the extendable device 140 can manage the relative movement of the elongated bridge 130, the first handle portion 110, and the second handle portion 120, and / or cause (or generate or achieve) the desired movement of the first handle portion 110 and the second handle portion 120 to extend and retract in unison (or symmetrically), synchronously (or simultaneously) in opposite directions relative to the elongated bridge 130 along the extension axis 141 of the extendable device 140. The extension axis 141 of the extendable device 140 can be parallel to or coincide with the longitudinal axis 131 of the elongated bridge 130. According to various embodiments, when the first handle portion 110 is extended from the elongated bridge 130, the extendable device 140 can cause the second handle portion 120 to extend from the elongated bridge 130 in coordination with the first handle portion 110 to achieve synchronous (or simultaneous) and unison (or symmetrical) extension. Similarly, when the second handle portion 120 is extended from the elongated bridge 130, the extendable device can make the first handle portion 110 and the second handle portion 120 extend from the elongated bridge 130 in coordination to achieve synchronous (or simultaneous) and consistent (or symmetrical) extension. According to various embodiments, the extendable device 140 can interconnect the elongated bridge 130, the first handle portion 110 and the second handle portion 120 in a manner so as to synchronously (or simultaneously) and consistently extend and retract the first handle portion 110 and the second handle portion 120 in opposite directions relative to the elongated bridge 130 along the extension axis 141 of the extendable device 140.

[0132] According to various embodiments, the extendable device 140 may include a dual reciprocating opposite motion carriage system 150. According to various embodiments, the dual reciprocating opposite motion carriage system 150 may be located within the elongated bridge 130. According to various embodiments, various components and / or elements of the dual reciprocating opposite motion carriage system 150 may be disposed or located within the elongated bridge 130. Thus, the dual reciprocating opposite motion carriage system 150 may be confined or contained within the elongated bridge 130. Furthermore, according to various embodiments, the elongated bridge 130 may support or hold or carry or maintain the dual reciprocating opposite motion carriage system 150 such that the dual reciprocating opposite motion carriage system 150 may operate or run within the elongated bridge 130.

[0133] According to various embodiments, the dual reciprocating counter-motion carriage system 150 may include a first reciprocating carriage 152 and a second reciprocating carriage 154. According to various embodiments, each of the first reciprocating carriage 152 and the second reciprocating carriage 154 may be capable of repeatedly moving forward and backward (or back and forth) relative to the elongated bridge 130. According to various embodiments, the first reciprocating carriage 152 may move along a first carriage path 153 relative to the elongated bridge 130. Therefore, the first reciprocating carriage 152 may move in a reciprocating manner along the first carriage path 153. According to various embodiments, the first reciprocating carriage 152 may move within the elongated bridge 130. Therefore, the first carriage path 153 may be within the boundaries of the elongated bridge 130, so that the first reciprocating carriage 152 may move within the boundaries of the elongated bridge 130. Therefore, the first carriage path 153 may not extend beyond the boundaries of the elongated bridge 130. According to various embodiments, the second reciprocating carriage 154 may move along a second carriage path 155 relative to the elongated bridge 130. Thus, the second reciprocating carrier 154 may move in a reciprocating manner along the second carrier path 155. According to various embodiments, the second reciprocating carrier 154 may move within the elongated bridge 130. Thus, the second carrier path 155 may be within the boundaries of the elongated bridge 130 such that the second reciprocating carrier 154 may move within the boundaries of the elongated bridge 130. Thus, the second carrier path 155 may not extend beyond the boundaries of the elongated bridge 130.

[0134] According to various embodiments, operating the dual reciprocating opposite motion carrier system 150 may always cause the first reciprocating carrier 152 and the second reciprocating carrier 154 to synchronously (or simultaneously) move in opposite directions relative to each other and relative to the elongated bridge 130. For example, the first reciprocating carrier 152 and the second reciprocating carrier 154 may synchronously (or simultaneously) move toward, past, and away from each other. According to various embodiments, when the dual reciprocating opposite motion carrier system 150 is in operation, the first reciprocating carrier 152 and the second reciprocating carrier 154 may synchronously (or simultaneously) move in opposite directions relative to the extension axis 141 of the extendable device 140 (i.e., corresponding to two opposite directions along the extension axis 141). For example, when the first reciprocating carrier 152 moves from right to left relative to the elongated bridge 130 relative to the extension axis 141 of the extendable device 140, the second reciprocating carrier 154 may move from left to right relative to the elongated bridge 130 relative to the extension axis 141 of the extendable device 140 and in coordination with the movement of the first reciprocating carrier 152. Similarly, when the first reciprocating carrier 152 moves from left to right relative to the elongated bridge 130 relative to the extension axis 141 of the extendable device 140, the second reciprocating carrier 154 may move from right to left relative to the extension axis 141 of the extendable device 140 and in coordination with the movement of the first reciprocating carrier 152. Thus, the first reciprocating carrier 152 and the second reciprocating carrier 154 may move relative to the elongated bridge 130 synchronously (or simultaneously) in an alternating manner and in opposition to each other.

[0135] According to various embodiments, the first and second reciprocating carriers 152, 154 may move synchronously (or simultaneously) and in unison (or symmetrically) with equal and opposite motions or diametrically opposite motions relative to each other and relative to the elongated bridge 130. Thus, the first and second reciprocating carriers 152, 154 may move relative to the elongated bridge 130 at the same rate of movement or speed, such that they move at the same speed in opposite directions relative to each other.

[0136] According to various embodiments, the dual reciprocating opposite motion carriage system 150 may include an opposite motion mechanism 160. According to various embodiments, the opposite motion mechanism 160 may interconnect the first reciprocating carriage 152 and the second reciprocating carriage 154. According to various embodiments, the opposite motion mechanism 160 may provide or establish a relationship and / or association between the first reciprocating carriage 152 and the second reciprocating carriage 154, such that the first reciprocating carriage 152 and the second reciprocating carriage 154 may synchronously (or simultaneously) interoperate or work together cooperatively to move in opposite directions relative to each other and / or relative to the extension axis 141 of the extendable device 140. Thus, the opposite motion mechanism 160 may manage the movement of the first reciprocating carriage 152 and the second reciprocating carriage 154 relative to the elongated bridge 130, and / or cause (or generate or achieve) the movement required for the first reciprocating carriage 152 and the second reciprocating carriage 154 to synchronously (or simultaneously) move in opposite directions relative to each other and / or relative to the extension axis 141 of the extendable device 140. According to various embodiments, the opposite motion mechanism 160 can be configured to move the first reciprocating carrier 152 and the second reciprocating carrier 154 in opposite directions relative to each other and / or relative to the extension axis 141 of the extendable device 140. According to various embodiments, the opposite motion mechanism 160 can directly engage or interact or contact or connect with each of the first reciprocating carrier 152 and the second reciprocating carrier 154.

[0137] According to various embodiments, the opposite motion mechanism 160 may include a reverse motion linkage mechanism, a scissors mechanism, a lever mechanism, a single fixed pulley mechanism, a belt and pulley mechanism, a double slider crank mechanism, or any suitable mechanism configured to move the first reciprocating carrier 152 and the second reciprocating carrier 154 synchronously (or simultaneously) in opposite directions relative to each other and / or relative to the extension axis 141 of the extendable device 140.

[0138] According to various embodiments, the extendable device 140 can include a first elongated member 170. According to various embodiments, a first end portion 172 of the first elongated member 170 can be coupled to the first handle portion 110, and a second end portion 174 of the first elongated member 170 can be coupled to the first reciprocating carrier 152 of the dual reciprocating opposite motion carrier system 150. Therefore, with the first elongated member 170, the first handle portion 110, and the first reciprocating carrier 152 coupled together as a single integral structure, the first handle portion 110 and the first reciprocating carrier 152 can move together as a single unit or complete entity. Therefore, moving the first handle portion 110 to extend or retract relative to the elongated bridge 130 can move the first reciprocating carrier 152 in a corresponding direction relative to the elongated bridge 130. Similarly, when the first reciprocating carrier 152 moves in a corresponding direction relative to the elongated bridge 130, the first handle portion 110 can extend or retract relative to the elongated bridge 130.

[0139] According to various embodiments, the extendable device 140 may include a second elongated member 180. According to various embodiments, a first end portion 182 of the second elongated member 180 may be coupled to the second handle portion 120, and a second end portion 184 of the second elongated member 180 may be coupled to the second reciprocating carrier 154 of the dual reciprocating opposite motion carrier system 150. Thus, with the second elongated member 180, the second handle portion 120, and the second reciprocating carrier 154 coupled together as a single unitary structure, the second handle portion 120 and the second reciprocating carrier 154 may move together as a single unit or complete unit. Thus, moving the second handle portion 120 to extend or retract relative to the elongated bridge 130 may move the second reciprocating carrier 154 in a corresponding direction relative to the elongated bridge 130. Similarly, when the second reciprocating carrier 152 moves in a corresponding direction relative to the elongated bridge 130, the second handle portion 120 may extend or retract relative to the elongated bridge 130.

[0140] According to various embodiments, when the reverse motion mechanism 160 is operated in the first operation mode (or forward operation mode), the first reciprocating carrier 152 and the second reciprocating carrier 154 may be respectively operated in a first motion cycle (or forward motion cycle) to synchronously (or simultaneously) move in opposite directions relative to each other and / or relative to the extension axis 141 of the extendable device 140. Therefore, the first reciprocating carrier 152 may move relative to the elongated bridge 130 in the first motion cycle (e.g., the forward cycle of the reciprocating motion of the first reciprocating carrier 152). Similarly, the second reciprocating carrier 154 may move relative to the elongated bridge 130 in the first motion cycle (e.g., the forward cycle of the reciprocating motion of the second reciprocating carrier 154). The first motion cycle of the first reciprocating carrier 152 and the first motion cycle of the second reciprocating carrier 154 may be opposite to each other relative to the elongated bridge 130. According to various embodiments, synchronously (or simultaneously) moving the first reciprocating carrier 152 and the second reciprocating carrier 154 in the first movement cycle can synchronously (or simultaneously) move the first handle portion 110 and the second handle portion 120 in opposite directions relative to the elongated bridge 130 to synchronously (or simultaneously) extend the first handle portion 110 and the second handle portion 120 from the elongated bridge 130. According to various embodiments, the first reciprocating carrier 152 and the second reciprocating carrier 154 can respectively operate in unison (or symmetrically) in the first movement cycle (or forward movement cycle). Therefore, the first reciprocating carrier 152 and the second reciprocating carrier 154 can synchronously (or simultaneously) and in unison (or symmetrically) move the first handle portion 110 and the second handle portion 120 in opposite directions relative to the elongated bridge 130 to extend the first handle portion 110 and the second handle portion 120 from the elongated bridge 130 in a synchronous (or simultaneous) and consistent (or symmetrical) manner.

[0141] For example, when the extendable controller 100 is in the retracted state (see Figure 2A ), the first reciprocating carrier 152 can be located within the second half of the elongated bridge 130, and the first bridging portion 114 of the first handle portion 110 can overlap the first half of the elongated bridge 130, and the second reciprocating carrier 154 can be located within the first half of the elongated bridge 130, and the second bridging portion 124 of the second handle portion 120 can overlap the second half of the elongated bridge 130. During extension of the extendable controller 100, the first reciprocating carrier 152 can move from the second half of the elongated bridge 130 to the first half of the elongated bridge 130 so that the first elongated member 170 can move the first handle portion 110 longitudinally outward from the first half of the elongated bridge 130 along the extension axis 141. Similarly, during extension of the extendable controller 100, the second reciprocating carrier 154 can move from the first half of the elongated bridge 130 to the second half of the elongated bridge 130 so that the second elongated member 180 can move the second handle portion 120 longitudinally outward from the second half of the elongated bridge 130 along the extension axis 141. Thus, the movement direction of the first reciprocating carrier 152 from the second half of the elongated bridge 130 to the first half of the elongated bridge 130 can be opposite to the movement direction of the second reciprocating carrier 154 from the first half of the elongated bridge 130 to the second half of the elongated bridge 130.

[0142] According to various embodiments, when the reverse motion mechanism 160 is operated in the second operation mode (or reverse operation mode), the first reciprocating carrier 152 and the second reciprocating carrier 154 may be respectively operated in a second motion cycle (or reverse motion cycle) to synchronously (or simultaneously) move in opposite directions relative to each other and / or relative to the extension axis 141 of the extendable device 140. Therefore, the first reciprocating carrier 152 may move relative to the elongated bridge 130 in the second motion cycle (e.g., the reverse cycle of the reciprocating motion of the first reciprocating carrier 152). Similarly, the second reciprocating carrier 154 may move relative to the elongated bridge 130 in the second motion cycle (e.g., the reverse cycle of the reciprocating motion of the second reciprocating carrier 154). The second motion cycle of the first reciprocating carrier 152 and the second motion cycle of the second reciprocating carrier 154 may be opposite to each other relative to the elongated bridge 130. According to various embodiments, synchronously (or simultaneously) moving the first reciprocating carrier 152 and the second reciprocating carrier 154 in the second movement cycle can synchronously (or simultaneously) move the first handle portion 110 and the second handle portion 120 in opposite directions relative to the elongated bridge 130 to synchronously (or simultaneously) retract the first handle portion 110 and the second handle portion 120 relative to the elongated bridge 130. According to various embodiments, the first reciprocating carrier 152 and the second reciprocating carrier 154 can operate in unison (or symmetrically) in the second movement cycle (or reverse movement cycle), respectively. Therefore, the first reciprocating carrier 152 and the second reciprocating carrier 154 can synchronously (or simultaneously) and in unison (or symmetrically) move the first handle portion 110 and the second handle portion 120 in opposite directions relative to the elongated bridge 130 to retract the first handle portion 110 and the second handle portion 120 relative to the elongated bridge 130 in a synchronous (or simultaneous) and consistent (or symmetrical) manner.

[0143] For example, when the extendable controller 100 is in the extended state (see Figure 2B), the first reciprocating carrier 152 can be located within the first half of the elongated bridge 130 and the first handle portion 110 can extend outwardly from the first half of the elongated bridge 130, and the second reciprocating carrier 154 can be located within the second half of the elongated bridge 130 and the second handle portion 120 can extend outwardly from the second half of the elongated bridge 130. During retraction of the extendable controller 100, the first reciprocating carrier 152 can be moved from the first half of the elongated bridge 130 to the second half of the elongated bridge 130 so that the first elongated member 170 can move the first handle portion 110 longitudinally inwardly along the extension axis 141 toward the first half of the elongated bridge 130, so that the first bridging portion 114 of the first handle portion 110 can overlap the first half of the elongated bridge 130. Similarly, during retraction of the extendable controller 100, the second reciprocating carrier 154 may move from the second half of the elongated bridge 130 to the first half of the elongated bridge 130 so that the second elongated member 180 may move the second handle portion 120 longitudinally inwardly along the extension axis 141 toward the second half of the elongated bridge 130, thereby causing the second bridging portion 124 of the second handle portion 120 to overlap with the second half of the elongated bridge 130. Thus, the movement direction of the first reciprocating carrier 152 from the first half of the elongated bridge 130 to the second half of the elongated bridge 130 may be opposite to the movement direction of the second reciprocating carrier 154 from the second half of the elongated bridge 130 to the first half of the elongated bridge 130.

[0144] refer to Figure 2A and Figure 2B According to various embodiments, each of the first carrier path 153 and the second carrier path 155 may be straight. According to various other embodiments (not shown), each of the first carrier path 153 and the second carrier path 155 may be curved, wavy, zigzag, or any other suitable path, as long as the path extends generally in the direction of the extension axis 141 of the extendable device 140. Figure 2A and Figure 2B According to various embodiments, each of the first carrier path 153 and the second carrier path 155 may be parallel to the extension axis 141. According to various embodiments (not shown), each of the first carrier path 153 and the second carrier path 155 may not be parallel to the extension axis 141, as long as the path extends generally in the direction of the extension axis 141 of the extendable device 140, for example, may converge or diverge or deflect relative to the extension axis 141 of the extendable device 140. According to various embodiments, each of the first carrier path 153 and the second carrier path 155 may have a profile and may be oriented so that the first reciprocating carrier 152 and the second reciprocating carrier 154 may move in opposite directions relative to the extension axis 141 of the extendable device 140 (i.e., corresponding to two opposite directions along the extension axis 141).

[0145] refer to Figure 2A and Figure 2B According to various embodiments, the first carrier path 153 and the second carrier path 155 may be on opposite sides of the extension axis 141 of the extendable device 140 (i.e., across two opposite sides of the extension axis 141). According to various embodiments, the extension axis 141 of the extendable device 140 may be along a centerline passing through the extendable device 140 in the extension and retraction directions. Thus, the first carrier path 153 may be along an area of ​​the extendable device 140 on one side of the extension axis 141 (e.g., above the extension axis 141), and the second carrier path 155 may be along another area of ​​the extendable device 140 on the other side of the extension axis 141 (e.g., below the extension axis 141). Thus, the extension axis 141 of the extendable device 140 may extend through the extendable device 140 in a manner that separates the first carrier path 153 and the second carrier path 155 on two opposite sides of the extension axis 141.

[0146] refer to Figure 2A and Figure 2B According to various embodiments, the first carrier path 153 and the second carrier path 155 may be equal in length and aligned with each other. According to various embodiments, the first reciprocating carrier 152 and the second reciprocating carrier 154 may be moved to the same displacement amount when the first carrier path 153 and the second carrier path 155 are equal in length. According to various embodiments, the first carrier path 153 and the second carrier path 155 may be aligned such that the starting point of the first carrier path 153 and the end point of the second carrier path 155 are opposite to each other across the extension axis 141, and the end point of the first carrier path 153 and the starting point of the second carrier path 155 are opposite to each other across the extension axis 141.

[0147] Figure 3A A perspective view of the extendable controller 300 is shown in a retracted state according to various embodiments. Figure 3B A perspective view of an extendable controller 300 is shown in an extended state according to various embodiments. Figure 4A The extendable controller 300 is shown in a retracted state with the housing removed, according to various embodiments. Figure 4B The extendable controller 300 is shown in an extended state with the housing removed, according to various embodiments.

[0148] According to various embodiments, FIG. 3A to FIG. 4B The extendable controller 300 includes Figures 1A to 2B Therefore, it is suitable for Figures 1A to 2B All features, changes, modifications and variations of the extendable controller 100 may also be applicable to FIG. 3A to FIG. 4BAccording to various embodiments, FIG. 3A to FIG. 4B The extendable controller 300 may include a first handle portion 110, a second handle portion 120, an elongated bridge 130, and an extendable device 140 (which includes a dual reciprocating opposite motion carrier system 150, an opposite motion mechanism 160, a first elongated member 170, and a second elongated member 180), as previously described with respect to Figures 1A to 2B The extendable controller 100 is described.

[0149] According to various embodiments, FIG. 3A to FIG. 4B The reverse motion mechanism 160 of the extendable controller 300 may be a belt and pulley mechanism type. FIG. 3A to FIG. 4B According to various embodiments, the reverse motion mechanism 160 of the extendable controller 300 may include a first pulley 362. According to various embodiments, the first pulley 362 may be rotatably coupled to the first end portion 132 of the elongated bridge 130 (or an outer portion of the first half of the elongated bridge 130 away from the midpoint 139 of the elongated bridge 130) in a manner so as to be rotatable about a first rotation axis that is perpendicular to the extension axis 141 of the extendable device 140. According to various embodiments, the first rotation axis may extend through the center of the first pulley 362 so that the first pulley 362 can rotate about its own center. According to various embodiments, the reverse motion mechanism 160 of the extendable controller 300 may include a second pulley 364. According to various embodiments, the second pulley 364 may be rotatably coupled to the second end portion 134 of the elongated bridge 130 (or an outer portion of the second half of the elongated bridge 130 away from the midpoint 139 of the elongated bridge 130) in a manner so as to be rotatable about a second rotation axis that is perpendicular to the extension axis 141 of the extendable device 140. According to various embodiments, the second rotation axis may extend through the center of the second pulley 364 so that the second pulley 364 may rotate about its own center. According to various embodiments, the second rotation axis of the second pulley 364 and the first rotation axis of the first pulley 362 may be parallel to each other.

[0150] According to various embodiments, the reverse motion mechanism 160 of the extendable controller 300 may include a continuous loop belt 366 looped around the first pulley 362 and the second pulley 364. Therefore, the continuous loop belt 366, the first pulley 362 and the second pulley 364 may form a belt and pulley mechanism used as the reverse motion mechanism 160. According to various embodiments, the belt and pulley mechanism formed by the continuous loop belt 366, the first pulley 362 and the second pulley 364 may be a conveyor belt-like mechanism. According to various embodiments, the continuous loop belt 366 may form a closed loop around the first pulley 362 and the second pulley 364, so that the continuous loop belt 366 may rotate around the first pulley 362 and the second pulley 364 for moving the continuous loop belt 366. According to various embodiments, the continuous loop belt 366 may rotate around the first pulley 362 and the second pulley 364 in a first direction (e.g., clockwise) and a second direction (e.g., counterclockwise), wherein the second direction is opposite to the first direction.

[0151] According to various embodiments, the first reciprocating carrier 152 may be located at the first segment 366a of the continuous endless belt 366, and the second reciprocating carrier 154 may be located at the second segment 366b of the continuous endless belt 366. The first segment 366a of the continuous endless belt 366 and the second segment 366b of the continuous endless belt 366 may be located on opposite sides of the cross-extension axis 141 of the counter-movement mechanism 160. Therefore, the first segment 366a of the continuous endless belt 366 and the second segment 366b of the continuous endless belt 366 may be located on opposite sides of the extension axis 141, so that the first reciprocating carrier 152 and the second reciprocating carrier 154 may be located on corresponding sides of the extension axis 141. Therefore, the first section 366a of the continuous annular belt 366 together with the first reciprocating carrier 152 can be along an area of ​​the extendable device 140 on one side of the extension axis 141 (for example, above the extension axis 141), and the second section 366b of the continuous annular belt 366 together with the second reciprocating carrier 154 can be along another area of ​​the extendable device 140 on the other side of the extension axis 141 (for example, below the extension axis 141).

[0152] According to various embodiments, in a case where the first reciprocating carrier 152 is located at the first segment 366a of the continuous endless belt 366 on one side of the extension axis 141 and the second reciprocating carrier 154 is located at the second segment 366b of the continuous endless belt 366 on the opposite side of the extension axis 141, rotating the continuous endless belt 366 about the first and second pulleys 362 and 364 may move the first and second reciprocating carriers 152 and 154 opposite to each other with respect to the extension axis 141 (i.e., corresponding to two opposite directions along the extension axis 141). Therefore, rotating the continuous endless belt 366 about the first and second pulleys 362 and 364 may move the first reciprocating carrier 152 in a first direction (e.g., from left to right) with respect to the extension axis 141, and may move the second reciprocating carrier 154 in a second direction (e.g., from right to left) with respect to the extension axis 141. The first direction and the second direction may be opposite directions with respect to each other. For example, according to various embodiments, the first direction and the second direction may be parallel to opposite directions along the extension axis 141 , respectively.

[0153] According to various embodiments, when the extendable controller 300 is in a retracted state, the first reciprocating carrier 152 at the first section 366a of the continuous annular belt 366 can approach the second pulley 364 (or the second end portion 134 of the slender bridge 130), and the first bridging portion 114 of the first handle portion 110 can overlap with the first half of the slender bridge 130 (or the first end portion 132 of the slender bridge 130), and the second reciprocating carrier 154 at the second section 366b of the continuous annular belt 366 can approach the first pulley 362 (or the first end portion 132 of the slender bridge 130), and the second bridging portion 124 of the second handle portion 120 can overlap with the second half of the slender bridge 130 (or the second end portion 134 of the slender bridge 130). Thus, during extension of the extendable controller 300, rotating the continuous annular belt 366 in a first direction (e.g., clockwise) around the first pulley 362 and the second pulley 364 can move the first reciprocating carrier 152 from the second pulley 364 (or the second end portion 134 of the slender bridge 130) toward the first pulley 362 (or the first end portion 132 of the slender bridge 130) so that the first slender member 170 can move the first handle portion 110 longitudinally outward along the extension axis 141 from the first half of the slender bridge 130 (or the first end portion 132 of the slender bridge 130). Similarly, during extension of the extendable controller 300, rotation of the continuous annular belt 366 in a first direction (e.g., clockwise) about the first pulley 362 and the second pulley 364 can synchronously (or simultaneously) move the second reciprocating carrier 154 from the first pulley 362 (or the first end portion 132 of the slender bridge 130) toward the second pulley 364 (or the second end portion 134 of the slender bridge 130) so that the second slender member 180 can move the second handle portion 120 longitudinally outward along the extension axis 141 from the second half of the slender bridge 130 (or the second end portion 134 of the slender bridge 130). Therefore, the movement direction of the first reciprocating carrier 152 from the second pulley 364 (or the second end portion 134 of the slender bridge 130) toward the first pulley 362 (or the first end portion 132 of the slender bridge 130) can be opposite to the movement direction of the second reciprocating carrier 154 from the first pulley 362 (or the first end portion 132 of the slender bridge 130) toward the second pulley 364 (or the second end portion 134 of the slender bridge 130).

[0154] According to various embodiments, when the extendable controller 300 is in an extended state, the first reciprocating carrier 152 at the first section 366a of the continuous annular belt 366 can approach the first pulley 362 (or the first end portion 132 of the slender bridge 130), and the first handle portion 110 can extend outward from the first half of the slender bridge 130 (or the first end portion 132 of the slender bridge 130), and the second reciprocating carrier 154 at the second section 366b of the continuous annular belt 366 can approach the second pulley 364 (or the second end portion 134 of the slender bridge 130), and the second handle portion 120 can extend outward from the second half of the slender bridge 130 (or the second end portion 134 of the slender bridge 130). Thus, during retraction of the extendable controller 300, rotating the continuous loop belt 366 in a second direction (e.g., counterclockwise) about the first pulley 362 and the second pulley 364 can move the first reciprocating carrier 152 from the first pulley 362 (or the first end portion 132 of the slender bridge 130) toward the second pulley 364 (or the second end portion 134 of the slender bridge 130) so that the first slender member 170 can move the first handle portion 110 longitudinally inward to overlap with the first half of the slender bridge 130 (or the first end portion 132 of the slender bridge 130) along the extension axis 141. Similarly, during retraction of the extendable controller 300, rotation of the continuous loop belt 366 in a second direction (e.g., counterclockwise) about the first pulley 362 and the second pulley 364 can synchronously (or simultaneously) move the second reciprocating carrier 154 from the second pulley 364 (or the second end portion 134 of the long bridge 130) toward the first pulley 362 (or the first end portion 132 of the slender bridge 130) so that the second slender member 180 can move the second handle portion 120 longitudinally inward to overlap with the second half of the slender bridge 130 (or the second end portion 134 of the slender bridge 130) along the extension axis 141. Therefore, the movement direction of the first reciprocating carrier 152 from the first pulley 362 (or the first end portion 132 of the slender bridge 130) toward the second pulley 364 (or the second end portion 134 of the slender bridge 130) can be opposite to the movement direction of the second reciprocating carrier 154 from the second pulley 364 (or the second end portion 134 of the slender bridge 130) toward the first pulley 362 (or the first end portion 132 of the slender bridge 130).

[0155] According to various embodiments, since the first reciprocating carrier 152 and the second reciprocating carrier 154 are located on the same continuous endless belt 366, rotating the continuous endless belt 366 around the first pulley 362 and the second pulley 364 can move the first reciprocating carrier 152 and the second reciprocating carrier 154 synchronously (or simultaneously) and consistently (or symmetrically).

[0156] According to various embodiments, the continuous endless belt 366 may include a toothed belt, a flat belt, a round belt, a V-belt, a multi-groove belt, a multi-V belt, or a chain. According to various embodiments, the continuous endless belt 366 may be made of any suitable material, including but not limited to thermoplastic polyurethane (TPU), polyurethane (PU), or styrene-ethylene-butylene-styrene (SEBS). According to various embodiments, each of the first pulley 362 and the second pulley 364 may include a corresponding toothed pulley, a flat belt pulley, a grooved pulley, a V-groove pulley, or a multi-groove pulley.

[0157] According to various embodiments, the first reciprocating carrier 152 may be an integral part of the continuous endless belt 366 located at the first section 366a of the continuous endless belt 366. Similarly, according to various embodiments, the second reciprocating carrier 154 may be an integral part of the continuous endless belt 366 located at the second section 366b of the continuous endless belt 366. According to various embodiments, the first reciprocating carrier 152, the second reciprocating carrier 154, and the continuous endless belt 366 may be integrally formed or molded into a single piece. According to various embodiments, the first reciprocating carrier 152, the second reciprocating carrier 154, and the continuous endless belt 366 may be made of the same material. According to various embodiments, the first reciprocating carrier 152, the second reciprocating carrier 154, and the continuous endless belt 366 may be integrally combined or connected together to form a single integrated unit. According to various embodiments, the first reciprocating carrier 152, the second reciprocating carrier 154, and the continuous endless belt 366 may be made of the same material or different materials.

[0158] According to various embodiments, the first reciprocating carrier 152 can be coupled (or directly coupled) to the second end portion 172 of the first elongated member 170 by various suitable coupling means, including but not limited to fastening, interlocking, or bonding. Similarly, according to various embodiments, the second reciprocating carrier 154 can be coupled (or directly coupled) to the second end portion 182 of the second elongated member 180 by various suitable coupling means, including but not limited to fastening, interlocking, or bonding.

[0159] For example, refer to FIG. 3A to FIG. 4BAccording to various embodiments, the first reciprocating carrier 152 may include an interlocking device 152a, and the second end portion 172 of the first elongated member 170 may include a complementary interlocking device 172a. According to various embodiments, the interlocking device 152a of the first reciprocating carrier 152 and the complementary interlocking device 172a of the first elongated member 170 may interlock with each other so as to couple (or directly couple) the second end portion 172 of the first elongated member 170 to the first reciprocating carrier 152. Similarly, according to various embodiments, the second reciprocating carrier 154 may include an interlocking device 154a, and the second end portion 182 of the second elongated member 180 may include a complementary interlocking device 182a. According to various embodiments, the interlocking device 154a of the second reciprocating carrier 154 and the complementary interlocking device 182a of the second elongated member 180 may interlock with each other so as to couple (or directly couple) the second end portion 182 of the second elongated member 180 to the second reciprocating carrier 154.

[0160] According to various embodiments, the interlock 152a of the first reciprocating carrier 152 may be an integral part of the first reciprocating carrier 152. Similarly, the interlock 154a of the second reciprocating carrier 154 may be an integral part of the second reciprocating carrier 152. According to various embodiments, the interlock 152a of the first reciprocating carrier 152 may be integrally formed, molded, bonded, or connected to the first reciprocating carrier 152. Similarly, according to various embodiments, the interlock 154a of the second reciprocating carrier 154 may be integrally formed, molded, bonded, or connected to the second reciprocating carrier 154. According to various embodiments, the first reciprocating carrier 152 may be configured such that the entire first reciprocating carrier 152 may be the interlock 152a of the first reciprocating carrier 152. Similarly, according to various embodiments, the second reciprocating carrier 154 may be configured such that the entire second reciprocating carrier 154 may be the interlock 154a of the second reciprocating carrier 154.

[0161] According to various embodiments, the complementary interlocking means 172a of the second end portion 172 of the first elongated member 170 may be an integral part of the first elongated member 170. Similarly, according to various embodiments, the complementary interlocking means 182a of the second end portion 182 of the second elongated member 180 may be an integral part of the second elongated member 180. According to various embodiments, the complementary interlocking means 172a of the second end portion 172 of the first elongated member 170 may be integrally formed, molded, bonded, or connected to the first elongated member 170. Similarly, according to various embodiments, the complementary interlocking means 182a of the second end portion 182 of the second elongated member 180 may be integrally formed, molded, bonded, or connected to the second elongated member 180.

[0162] According to various embodiments, the interlocking device 152a of the first reciprocating carrier 152 and the complementary interlocking device 172a of the second end portion 172 of the first elongated member 170 can be configured to interlock so that the first reciprocating carrier 152 and the second end portion 172 of the first elongated member 170 can be immovable relative to each other. Therefore, the interlocking device 152a of the first reciprocating carrier 152 and the complementary interlocking device 172a of the second end portion 172 of the first elongated member 170 can be assembled together to ensure the coordinated movement of the first reciprocating carrier 152 and the first elongated member 170 as a whole. Similarly, the interlocking device 154a of the second reciprocating carrier 154 and the complementary interlocking device 182a of the second end portion 182 of the second elongated member 180 can be configured to interlock so that the second reciprocating carrier 154 and the second end portion 182 of the second elongated member 180 can be immovable relative to each other. Thus, the interlock 154a of the second shuttle 154 and the complementary interlock 182a of the second end portion 182 of the second elongated member 180 may fit together to ensure coordinated movement of the second shuttle 154 and the second elongated member 180 as a unit.

[0163] For example, according to various embodiments, the interlocking means 152a of the first reciprocating carrier 152 may be a protrusion and the complementary interlocking means 172a of the first elongated member 170 may be a recess, or vice versa. Thus, the interlocking means 152a of the first reciprocating carrier 152 and the complementary interlocking means 172a of the first elongated member 170 may form a tongue-and-groove joint or a mortise-and-tenon joint. Similarly, according to various embodiments, the interlocking means 154a of the second reciprocating carrier 154 may be a protrusion and the complementary interlocking means 182a of the second elongated member 180 may be a recess, or vice versa. Thus, the interlocking means 154a of the second reciprocating carrier 154 and the complementary interlocking means 182a of the second elongated member 180 may form a tongue-and-groove joint or a mortise-and-tenon joint.

[0164] According to various embodiments, the extendable device 140 of the extendable controller 300 may further include a first biasing element 392 and a second biasing element 394 .

[0165] According to various embodiments, the first biasing element 392 can be connected between the first handle portion 110 and the first end portion 132 of the elongated bridge 130. According to various embodiments, the first biasing element 392 can be configured to bias to prevent the first handle portion 110 from extending from the elongated bridge 130 along the extension axis 141. Therefore, when the first handle portion 110 is extending from the elongated bridge 130, the first biasing element 392 can apply a biasing force to resist (or resist) a force that pulls the first handle portion 110 away from the first end portion 132 of the elongated bridge 130. Therefore, when the first handle portion 110 is extending from the first end portion 132 of the elongated bridge 130, the biasing force can accumulate in the first biasing element 392. According to various embodiments, upon releasing the force pulling the first handle portion 110 away from the first end portion 132 of the elongated bridge 130, the biasing force accumulated in the first biasing element 392 can then retract the first handle portion 110 relative to the elongated bridge 130 so as to return the first handle portion 110 to the retracted state. Thus, when the first handle portion 110 is being extended or has been extended, the first biasing element 392 can provide a tendency or urging force to return the first handle portion 110 to the retracted state.

[0166] Similarly, according to various embodiments, a second biasing element 394 can be connected between the second handle portion 120 and the second end portion 134 of the elongated bridge 130. According to various embodiments, the second biasing element 394 can be configured to bias to prevent the second handle portion 120 from extending from the elongated bridge 130 along the extension axis 141. Thus, when the second handle portion 120 is extending from the elongated bridge 130, the second biasing element 394 can apply a biasing force to resist (or resist) a force that pulls the second handle portion 120 away from the second end portion 134 of the elongated bridge 130. Thus, when the second handle portion 120 is extending from the second end portion 134 of the elongated bridge 130, the biasing force can accumulate in the second biasing element 394. According to various embodiments, upon releasing the force pulling the second handle portion 120 away from the second end portion 134 of the elongated bridge 130, the biasing force accumulated in the second biasing element 394 can then retract the second handle portion 120 relative to the elongated bridge 130 so as to return the second handle portion 120 to the retracted state. Thus, when the second handle portion 120 is being extended or has been extended, the second biasing element 394 can provide a tendency or urging force to return the second handle portion 120 to the retracted state.

[0167] According to various embodiments, each of the first biasing element 392 and the second biasing element 394 may include, but is not limited to, a tension spring or a traction spring. According to various embodiments, for example, when the first biasing element 392 is a tension spring or a traction spring, the first end of the first biasing element 392 may be coupled to the first handle portion 110, and the second end of the first biasing element 392 may be coupled to the first end portion 132 of the elongated bridge 130. Similarly, according to various embodiments, for example, when the second biasing element 394 is a tension spring or a traction spring, the first end of the second biasing element 394 may be coupled to the second handle portion 120, and the second end of the second biasing element 394 may be coupled to the second end portion 134 of the elongated bridge 130.

[0168] According to various embodiments, the first biasing element 392 and the first reciprocating carrier 152 may be on opposite sides of the reverse motion mechanism 160 relative to the extension axis 141 (i.e., across two opposite sides of the extension axis 141). Therefore, the first biasing element 392 and the first reciprocating carrier 152 may be arranged such that the first biasing element 392 may be coupled to the first end portion 132 of the elongated bridge 130 on a side of the reverse motion mechanism 160 that is opposite and away from the first reciprocating carrier 152 relative to the extension axis 141 (i.e., across the extension axis 141). For example, when the first reciprocating carrier 152 is on a side of the reverse motion mechanism 160 that is above the extension axis 141, the first biasing element 392 may be coupled to the first end portion 132 of the elongated bridge 130 on a side of the reverse motion mechanism 160 that is below the extension axis 141.

[0169] Similarly, according to various embodiments, the second biasing element 394 and the second reciprocating carrier 154 may be on opposite sides of the reverse motion mechanism 160 relative to the extension axis 141 (i.e., across two opposite sides of the extension axis 141). Therefore, the second biasing element 394 and the second reciprocating carrier 154 may be arranged such that the second biasing element 394 may be coupled to the second end portion 134 of the elongated bridge 130 on a side of the reverse motion mechanism 160 that is opposite and away from the second reciprocating carrier 154 relative to the extension axis 141 (i.e., across the extension axis). For example, when the second reciprocating carrier 154 is on a side of the reverse motion mechanism 160 that is below the extension axis 141, the second biasing element 394 may be coupled to the second end portion 134 of the elongated bridge 130 on a side of the reverse motion mechanism 160 that is above the extension axis 141.

[0170] According to various embodiments, the first elongated member 170 may be parallel to the extension axis 141, and the second elongated member 180 may be parallel to the extension axis 141. Therefore, the first elongated member 170 and the second elongated member 180 may be parallel to each other. Therefore, the first elongated member 170 and the second elongated member 180 may move relative to each other in a parallel manner (i.e., corresponding to two opposite directions along the extension axis 141). According to various embodiments, since the first reciprocating carrier 152 and the second reciprocating carrier 154 are on opposite sides of the opposite movement mechanism 160, and the first elongated member 170 and the second elongated member 180 are respectively coupled to the first reciprocating carrier 152 and the second reciprocating carrier 154, the first elongated member 170 and the second elongated member 180 may be located on two opposite sides of the opposite movement mechanism 160 (i.e., across two opposite sides of the extension axis 141) with respect to the extension axis 141, respectively.

[0171] According to various embodiments, the extendable controller 300 may include a first guide pin 376 and a second guide pin 386. According to various embodiments, the first guide pin 376 may be disposed at the first end portion 132 of the elongated bridge 130. According to various embodiments, the first guide pin 376 may be fixed relative to the elongated bridge 130. For example, the first guide pin 376 may be fixed to the elongated bridge 130, or the body of the elongated bridge 130, or the housing of the elongated bridge 130. According to various embodiments, the first guide pin 376 may be perpendicular to the first elongated member 170. According to various embodiments, the second guide pin 286 may be disposed at the second end portion 134 of the elongated bridge 130. According to various embodiments, the second guide pin 386 may be fixed relative to the elongated bridge 130. For example, the second guide pin 386 may be fixed to the elongated bridge 130, or the body of the elongated bridge 130, or the housing of the elongated bridge 130. According to various embodiments, the second guide pin 286 may be perpendicular to the second elongated member 180.

[0172] According to various embodiments, the first elongated member 170 can include an elongated slot 378 extending longitudinally along the length of the first elongated member 170. According to various embodiments, a first guide pin 376 can be fitted through the elongated slot 378 of the first elongated member 170 to guide the longitudinal movement of the first elongated member 170. Thus, the first guide pin 376 can be fitted through the elongated slot 378 of the first elongated member 170 in a transverse manner such that longitudinally moving the first elongated member 170 can slide the first elongated member 170 relative to the first guide pin 376. According to various embodiments, the elongated slot 378 of the first elongated member 170 can also serve as a stop or limiter that can limit the range of longitudinal movement of the first elongated member 170 as a measure to limit the amount that the first handle portion 110 extends from the elongated bridge 130.

[0173] According to various embodiments, the second elongated member 180 can include an elongated slot 388 extending longitudinally along the length of the second elongated member 180. According to various embodiments, the second guide pin 386 can be fitted through the elongated slot 388 of the second elongated member 180 to guide the longitudinal movement of the second elongated member 180. Thus, the second guide pin 386 can be fitted through the elongated slot 388 of the second elongated member 180 in a transverse manner so that longitudinally moving the second elongated member 180 can slide the second elongated member 180 relative to the second guide pin 386. According to various embodiments, the elongated slot 388 of the second elongated member 180 can also serve as a stop or limiter that can limit the range of longitudinal movement of the second elongated member 180 as a measure to limit the amount that the second handle portion 120 extends from the elongated bridge 130.

[0174] According to various embodiments, the first bridge portion 114 of the first handle portion 110 may be a sleeve-like structure mounted on the first half of the elongated bridge 130. According to various embodiments, the sleeve-like structure of the first bridge portion 114 may be hollow so that the first half of the elongated bridge 130 may be inserted therein. According to various embodiments, the sleeve-like structure of the first bridge portion 114 mounted on the first half of the elongated bridge 130 may form a sliding engagement between the first bridge portion 114 of the first handle portion 110 and the first half of the elongated bridge 130.

[0175] Similarly, according to various embodiments, the second bridge portion 124 of the second handle portion 120 may be a sleeve-like structure mounted on the second half of the elongated bridge 130. According to various embodiments, the sleeve-like structure of the second bridge portion 124 may be hollow so that the second half of the elongated bridge 130 may be inserted therein. According to various embodiments, the sleeve-like structure of the second bridge portion 124 mounted on the second half of the elongated bridge 130 may form a sliding engagement between the second bridge portion 124 of the second handle portion 120 and the second half of the elongated bridge 130.

[0176] According to various embodiments, the first bridge portion 114 of the first handle portion 110 and the second bridge portion 124 of the second handle portion 120 can be configured so that when the extendable controller 300 is in a retracted state, the first bridge portion 114 of the first handle portion 110 and the second bridge portion 124 of the second handle portion 120 can completely surround or hide the slender bridge 130.

[0177] Figure 5A A cross-sectional view of the second handle portion 120 of the extendable controller 300 is shown in a retracted state according to various embodiments. Figure 5BA cross-sectional view of the second handle portion 120 of the extendable controller 300 in an extended state according to various embodiments is shown. According to various embodiments, the extendable controller 300 may include a cable 396 extending between the first handle portion 110 and the second handle portion 120. According to various embodiments, the cable 396 may be used to establish electrical communication between the first handle portion 110 and the second handle portion 120. Therefore, control input signals received in the first handle portion 110 may be shared with the second handle portion 120, and vice versa. Therefore, the first handle portion 110 and the second handle portion 120 may be operated as a single controller.

[0178] According to various embodiments, the cable 396 can extend from the first handle portion 110, along the first bridge portion 114 of the first handle portion 110, along the elongated bridge 130, and along the second bridge portion 124 of the second handle portion 120 to the second handle portion 120. Thus, the cable 396 can extend alongside the extendable device 140 of the extendable controller 300.

[0179] According to various embodiments, when the extendable controller 300 is fully extended, the cable 396 can be fully extended to extend between the first handle portion 110 and the second handle portion 120. According to various embodiments, when the extendable controller 300 is retracted, a cable management device can stow excess length of the cable 396. According to various embodiments, each of the first handle body portion 112 of the first handle portion 110 and the second handle body portion 122 of the second handle portion 120 may include an empty inner cavity 398 for accommodating excess length of the cable 396, whereby, when the extendable controller 300 is retracted, the excess length of the cable 396 can be coiled or bent into the empty inner cavity 398. Therefore, the empty inner cavity 398 can be used as a cable management device for managing excess length of the cable 396 when the extendable controller 300 is retracted.

[0180] According to various embodiments, the cable 396 may include, but is not limited to, a flexible flat cable, a flexible cable, a ribbon cable, a coaxial cable, or a wire.

[0181] According to various embodiments, the elongated bridge 130 may include an elongated body 136 and a hollow housing 138 coupled to the elongated body 136. The hollow housing 138 may define a through passage extending from one end to the other end. According to various embodiments, the dual reciprocating opposite motion carrier system 150 (including the first reciprocating carrier 152, the second reciprocating carrier 154, and the opposite motion mechanism 160) may be located or disposed in the through passage of the hollow housing 138 of the elongated bridge 130. For example, the dual reciprocating opposite motion carrier system 150 may be disposed on the elongated body 136 of the elongated bridge 130. According to various embodiments, in the case where the opposite motion mechanism 160 includes a first pulley 362, a second pulley 364, and a continuous endless belt 366, the first pulley 362, the second pulley 364, and the continuous endless belt 366 may be correspondingly positioned or disposed in the through passage of the hollow housing 138 of the elongated bridge 130 (or disposed on the elongated body 136 of the elongated bridge 130).

[0182] Fig. 6A A schematic diagram of an extendable controller 600 in a retracted state is shown according to various embodiments. Figure 6B A schematic diagram of an extendable controller 600 in an extended state is shown according to various embodiments. Fig. 6A and Figure 6B The extendable controller 600 may be Figures 1A to 2B Extendable controller and FIG. 3A to FIG. 5B A variation of the extendable controller. Fig. 6A and Figure 6B The extendable controller 500 may include a Figures 1A to 2B Extendable controller and FIG. 3A to FIG. 5B Therefore, it is suitable for Figures 1A to 2B The extendable controller 100 and FIG. 3A to FIG. 5B All features, changes, modifications and variations of the extendable controller 300 may also be applicable to Fig. 6A and Figure 6B According to various embodiments, Fig. 6A and Figure 6B The extendable controller 600 may include a first handle portion 110, a second handle portion 120, an elongated bridge 130, and an extendable device 140 (which includes a dual reciprocating opposite motion carrier system 150, an opposite motion mechanism 160, a first elongated member 170, and a second elongated member 180), as previously described with respect to Figures 1A to 2B The extendable controller 100 and FIG. 3A to FIG. 5B Therefore, the same elements as those previously described are assigned the same reference numerals, and their repeated descriptions are omitted for the sake of brevity. Fig. 6A and Figure 6BThe main difference of the extendable controller 600.

[0183] According to various embodiments, Fig. 6A and Figure 6B The extendable controller 600 and Figures 1A to 2B The extendable controller 100 and FIG. 3A to FIG. 5B The extendable controller 300 of the present invention may be different in that the extendable controller may include a first link member 602 and a second link member 604. According to various embodiments, the first link member 602 may be disposed between the first handle portion 110 and the elongated bridge 130. Similarly, the second link member 604 may be disposed between the second handle portion 120 and the elongated bridge 130. According to various embodiments, the elongated bridge 130 may be a long structure that serves as an intermediate piece that bridges (or joins together) the first link member 602 and the second link member 604. The first link member 602 may be slidably engaged with the elongated bridge 130 so as to be able to slide relative to the elongated bridge 130 along the longitudinal axis 131 of the elongated bridge 130, and the second link member 604 may be slidably engaged with the elongated bridge 130 so as to be able to slide relative to the elongated bridge 130 along the longitudinal axis 131 of the elongated bridge 130. According to various embodiments, the first end portion of the elongated bridge 130 can be slidably engaged with the first link member 602, and the second end portion of the elongated bridge 130 can be slidably arranged with the second link member 604. According to various embodiments, the first link member 602 and the second link member 604 can slide away from each other relative to the elongated bridge 130. For example, the first link member 602 and the second link member 604 can slide away from each other in a synchronous (or simultaneous) and consistent (or symmetrical) manner relative to the elongated bridge 130, so that the midpoint 139 of the elongated bridge 130 can remain in the middle of the extendable controller 100, regardless of whether the extendable controller 100 is in the retracted state, or is being extended, or is in the extended state. Similarly, when retracting from the extended state to the retracted state, the first link member 602 and the second link member 604 can slide toward each other in a synchronous and consistent manner relative to the elongated bridge 130. Thus, the first link member 602 and the second link member 604 may extend and retract in unison (or symmetrically), synchronously (or simultaneously) relative to the elongated bridge 130 in opposite directions relative to the longitudinal axis 131 of the elongated bridge 130. Thus, during extension, the first link member 602 and the second link member 604 may move outwardly away from each other in opposite directions relative to the elongated bridge 130, and during retraction, the first link member 602 and the second link member 604 may move inwardly toward each other in opposite directions relative to the elongated bridge 130. Thus, the elongated bridge 130 may be telescopically extendable relative to each of the first link member 602 and the second link member 604 along the longitudinal axis 131 of the elongated bridge 130.

[0184] According to various embodiments, the first link member 602 can move between a retracted position and an extended position relative to the first handle portion 110 along an extension axis 601, which is parallel to or coincident with the longitudinal axis of the elongated bridge 130. According to various embodiments, the second link member 604 can move between a retracted position and an extended position relative to the second handle portion 120 along an extension axis 601, which is parallel to or coincident with the longitudinal axis of the elongated bridge 130. Figures 1A to 2B The extendable controller 100 and FIG. 3A to FIG. 5B Compared to the extendable controller 300, each of the first link member 602 and the second link member 604 can be used to Fig. 6A and Figure 6B The extendable controller 600 has an additional extension so as to be able to receive a mobile phone when the first link member 602 and the second link member 604 are not used, and to be able to receive a tablet computer when the first link member 602 and the second link member 604 are used. Fig. 6A and Figure 6B The extendable controller 600 is shown to include a first link member 602 and a second link member 604, but it should be understood that an embodiment having a link member (e.g., the first link member 602 or the second link member 604) disposed between one of the handle portions (e.g., the first handle portion 110 or the second handle portion 120) and the elongated bridge 130 and the other handle portion (e.g., the second handle portion 120 or the first handle portion 110) is directly slidably engaged with the elongated bridge 130 can also be envisioned, thereby, the embodiments can be combined with reference to the following 6A to 9B Description and references related to the link member (eg, the first link member 602 or the second link member 604) Figures 1A to 5B The description related to another handle portion (e.g., the second handle portion 120 or the first handle portion 110) that is directly slidably engaged with the slender bridge 130.

[0185] refer to Fig. 6A , in the retracted state of the extendable controller 600, the first bridging portion 114 of the first handle portion 110, the first link member 602, and the first half of the elongated bridge 130 can overlap each other. Similarly, in the retracted state, the second bridging portion 124 of the second handle portion 120, the second link member 604, and the second half of the elongated bridge 130 can overlap each other. Therefore, in the retracted state of the extendable controller 600, the distance between the first handle body portion 112 of the first handle portion 110 and the second handle body portion 122 of the second handle portion 120 can be minimized. Figure 6B, in the fully extended state of the extendable controller 600, the first link member 602 may extend longitudinally from the first half of the elongated bridge 130, and the first bridging portion 114 of the first handle portion 110 may extend longitudinally from the first link member 602 along the extension axis 601, so that the first link member 602 may move outward and away from the elongated bridge 130 and the first handle portion 110 may move outward and away from the first link member 602. Similarly, in the fully extended state of the extendable controller 600, the second link member 604 may extend longitudinally from the second half of the elongated bridge 130, and the second bridging portion 124 of the second handle portion 120 may extend longitudinally from the second link member 604 along the extension axis 601, so that the second link member 604 may move outward and away from the elongated bridge 130 and the second handle portion 120 may move outward and away from the second link member 604. Therefore, in the fully extended state of the extendable controller 600 , the distance separated between the first handle body portion 112 of the first handle portion 110 and the second handle body portion 122 of the second handle portion 120 may be maximized.

[0186] According to various embodiments, the relative movement between the first link member 602 and the first handle portion 110 and the relative movement between the second link member 604 and the second handle portion 120 may be controlled based on the needs of the user. For example, when the user is using the extendable controller 600 with a tablet computer, the first link member 602 may be controlled to move relative to the first handle portion 110 and be restricted in an extended position, and the second link member 604 may be controlled to move relative to the second handle portion 120 and be restricted in an extended position, so that the user can attach the tablet computer to the extendable controller 600 by relying on the extension provided between the first link member 602, the second link member 604 and the elongated bridge 130. On the other hand, when the user is using the extendable controller 600 with a mobile phone, the first link member 602 can be controlled to move relative to the first handle portion 110 and confined in a retracted position, and the second link member 604 can be controlled to move relative to the second handle portion 120 and confined in a retracted position, so that the extendable controller can be in an intermediate extension state, whereby the user can rely on the extension provided by the slender bridge 130 to assemble the mobile phone to the extendable controller 600.

[0187] According to various embodiments, in the intermediate extension state of the extendable controller 600, the first link member 602 may extend longitudinally from the first half of the elongated bridge 130, and the first bridging portion 114 of the first handle portion 110 may remain overlapping with the first link member 602 (i.e., the first link member 602 may be located in a retracted position relative to the first handle portion 110), so that the first link member 602 together with the first handle portion 110 may move outward and away from the elongated bridge 130. Similarly, in the intermediate extension state of the extendable controller 600, the second link member 604 may extend longitudinally from the second half of the elongated bridge 130, and the second bridging portion 124 of the second handle portion 120 may remain overlapping with the second link member 604 (i.e., the second link member 604 may be located in a retracted position relative to the second handle portion 120), so that the second link member 604 together with the second handle portion 120 may move outward and away from the elongated bridge 130. Therefore, in the intermediate extended state of the extendable controller 600 , the distance between the first handle body portion 112 of the first handle portion 110 and the second handle body portion 122 of the second handle portion 120 may be between a minimum value and a maximum value.

[0188] According to various embodiments, the relative movement between the first link member 602 and the first handle portion 110 and the relative movement between the second link member 604 and the second handle portion 120 can be independently controlled. Therefore, depending on the size of the tablet computer, the user can control one or both of the first link member 602 and the second link member 604 to move to an extended position relative to the corresponding first handle portion 110 and / or second handle portion 120, respectively. Therefore, the extendable controller 600 can be operated for use in other intermediate extended states of the extendable controller 600.

[0189] According to various embodiments, the first movement control device 611 can be operably connected between the first link member 602 and the first handle portion 110. The first movement control device 611 can be configured to generally restrict the first link member 602 from moving between the retracted position and the extended position relative to the first handle portion 110 when the first link member 602 is in the retracted position and the extended position, respectively. Therefore, when the first link member 602 is in the retracted position, the first movement control device 611 can restrict the first link member 602 so that the first link member 602 can be prevented or prohibited from moving from the retracted position to the extended position relative to the first handle portion 110. Correspondingly, when the first link member 602 is in the extended position, the first movement control device 611 can restrict the first link member 602 so that the first link member 602 can be prevented or prohibited from moving from the extended position to the retracted position relative to the first handle portion 110. According to various embodiments, the first movement control device 611 may include an input interface 613, which is operable to release the first link member 602 from being restricted when the first link member 602 is in the retracted position and the extended position, respectively, so that the first link member 602 can move between the retracted position and the extended position relative to the first handle portion 110. Therefore, when the first link member 602 is in the retracted position, the input interface 613 of the first movement control device 611 can be operated to release the first link member 602 from being restricted, so that the first link member 602 can move from the retracted position to the extended position. Correspondingly, when the first link member 602 is in the extended position, the input interface 613 of the first movement control device 611 can be operated to release the first link member 602 from being restricted, so that the first link member 602 can move from the extended position to the retracted position. According to various embodiments, the input interface 613 of the first movement control device 611 may provide active control for the user to actively control whether the first link member 602 should be moved to the retracted position or the extended position relative to the first handle portion 110 according to the desired use of the extendable controller 600. Therefore, without receiving an input from the user via the input interface 613 of the first movement control device 611 to release the first link member 602 to move between the retracted position and the extended position, the first movement control device 611 may restrict or maintain the first link member 602 in the retracted position and the extended position, depending on whether the first link member 602 is in the retracted position or the extended position, so that the first link member 602 may remain or be maintained in the corresponding position relative to the first handle portion 110. Therefore, without operating the input interface 613 of the first movement control device 611 to intervene in the first movement control device 611, the first movement control device 611 may function normally to restrict the first link member 602 when the first link member 602 is in either the retracted position or the extended position.Therefore, the first movement control device 611 can normally restrict the first link member 602 to any one of the retracted position and the extended position relative to the first handle portion 110 until the input interface 613 of the first movement control device 611 is operated to release the first link member 602 to move between the retracted position and the extended position.

[0190] According to various embodiments, the second movement control device 621 may be operably connected between the second link member 604 and the second handle portion 120. The second movement control device 621 may be configured to normally restrict the second link member 604 from moving between the retracted position and the extended position relative to the second handle portion 120 when the second link member 604 is in the retracted position and the extended position, respectively. Therefore, when the second link member 604 is in the retracted position, the second movement control device 621 may restrict the second link member 604 so that the second link member 604 may be prevented or prohibited from moving from the retracted position to the extended position relative to the second handle portion 120. Correspondingly, when the second link member 604 is in the extended position, the second movement control device 621 may restrict the second link member 604 so that the second link member 604 may be prevented or prohibited from moving from the extended position to the retracted position relative to the second handle portion 120. According to various embodiments, the second mobile control device 621 may include an input interface 623, which is operable to release the second link member 604 from being restricted when the second link member 604 is in the retracted position and the extended position, respectively, so that the second link member 604 can move between the retracted position and the extended position relative to the second handle portion 120. Therefore, when the second link member 604 is in the retracted position, the input interface 623 of the second mobile control device 621 can be operated to release the second link member 604 from being restricted, so that the second link member 604 can move from the retracted position to the extended position. Correspondingly, when the second link member 604 is in the extended position, the input interface 623 of the second mobile control device 621 can be operated to release the second link member 604 from being restricted, so that the second link member 604 can move from the extended position to the retracted position. According to various embodiments, the input interface 623 of the second mobile control device 621 may provide active control for the user to actively control whether the second link member 604 should be moved to the retracted position or the extended position relative to the second handle portion 120 according to the desired use of the extendable controller 600. Therefore, without receiving an input from the user via the input interface 623 of the second mobile control device 621 to release the second link member 604 to move between the retracted position and the extended position, the second mobile control device 621 may restrict or maintain the second link member 604 in the retracted position and the extended position, depending on whether the second link member 604 is in the retracted position or in the extended position, so that the second link member 604 may remain or be maintained in the corresponding position relative to the second handle portion 120. Therefore, without operating the input interface 623 of the second mobile control device 621 to intervene in the second mobile control device 621, the second mobile control device 621 may function normally to restrict the second link member 604 when the second link member 604 is in any one of the retracted position and the extended position.Therefore, the second mobile control device 621 can normally restrict the second link member 604 to any one of the retracted position and the extended position relative to the second handle portion 120 until the input interface 623 of the second mobile control device 621 is operated to release the second link member 604 to move between the retracted position and the extended position.

[0191] According to various embodiments, the manner in which the first link member 602 and the second link member 604 of the extendable controller 600 are synchronously (or simultaneously) extended from the elongated bridge 130 in opposite directions may be similar to that described with reference to FIG. Figures 1A to 2B The extendable controller 100 and FIG. 3A to FIG. 5B The manner in which the first handle portion 110 and the second handle portion 120 of the extendable controller 300 can be synchronously (or simultaneously) extended from the elongated bridge 130 in opposite directions is not further described for the sake of brevity, because the manner in which the first link member 602 and the second link member 604 of the extendable controller 600 can be synchronously (or simultaneously) extended from the elongated bridge 130 in opposite directions is not further described. Figures 1A to 2B The extendable controller 100 and FIG. 3A to FIG. 5B The relevant descriptions that the first handle portion 110 and the second handle portion 120 of the extendable controller 300 synchronously (or simultaneously) extend from the slender bridge 130 in opposite directions can be applied to the first link member 602 and the second link member 604 of the extendable controller 600 by replacing the "first handle portion 110" and the "second handle portion 120" in those relevant descriptions with the "first link member 602" and the "second link member 604", respectively.

[0192] Fig. 7A A detailed example of the first movement control device 611 operably connected between the first link member 602 and the first handle portion 110 when the controller 600 is in the retracted state according to various embodiments is shown. Figure 7B A detailed example of a first movement control device 611 operably connected between the first link member 602 and the first handle portion 110 when the first link member 602 is extended from the first handle portion 110 (i.e., the controller 600 is extended) according to various embodiments is shown. It should be understood that the following description with reference to the first movement control device 611 operably connected between the first link member 602 and the first handle portion 110 is also applicable to describing the second movement control device 621 operably connected between the second link member 604 and the second handle portion 120 by replacing the term "first" with "second" accordingly. Therefore, for the sake of brevity, the description of the second movement control device 621 will not be repeated below.

[0193] refer to Fig. 7A and Figure 7B, all other parts and elements of the extendable controller 600 are removed in order to focus the illustration on how the first movement control device 611 can be operably connected between the first link member 602 and the first handle portion 110. According to various embodiments, the first movement control device 611 can include a movement mechanism 633 that operably connects the first link member 602 to the first handle portion 110. The movement mechanism 633 can include a first moving piece 635 associated with the first link member 602 and a second moving piece 637 associated with the first handle portion 110. According to various embodiments, the first moving piece 635 and the second moving piece 637 can be configured to interact with each other, so that the first moving piece 635 and the second moving piece 637 can be engaged with each other in a manner to prevent relative movement between the first link member 602 and the first handle portion 110 when the first link member 602 is in a retracted position and an extended position relative to the first handle portion 110, respectively. For example, when the first link member 602 is in the retracted position and the extended position relative to the first handle portion 110, respectively, the first moving member 635 and the second moving member 637 may be in interlocking engagement, friction engagement, adhesive engagement, magnetic engagement, suction engagement, etc., so that the first moving member 635 and the second moving member 637 may be temporarily fixed or temporarily fastened to each other so as to prevent or inhibit relative movement between the first moving member 635 and the second moving member 637, thereby limiting the movement of the first link member 602 relative to the first handle portion 110. According to various embodiments, the input interface 613 of the first mobile control device 611 may include an intervening member 639. According to various embodiments, the input interface 613 of the first mobile control device 611 may be operable to move the intervening member 639 into an active setting so as to interfere with the engagement between the first moving member 635 and the second moving member 637, thereby breaking the engagement. When the engagement between the first moving member 635 and the second moving member 637 is broken, the first moving member 635 and the second moving member 637 may no longer be temporarily fixed or temporarily fastened to each other, and thus may move relative to each other. Therefore, in a case where the first moving piece 635 and the second moving piece 637 are not temporarily fixed or temporarily fastened to each other, the first link member 602 may be unrestricted and may move relative to the first handle portion 110 .

[0194] like Fig. 7A and Figure 7BAs shown in the example in , according to various embodiments, the first movement control device 611 may include a translation mechanism 643 used as a moving mechanism 633 that operably connects the first link member 602 to the first handle portion 110. According to various embodiments, the translation cam mechanism 643 may include a cam plate 645 as a first moving member 635 and a follower 647 as a second moving member 637. The cam plate 645 may be associated with the first link member 602, and the follower 647 may be associated with the first handle portion 110. For example, the cam plate 645 may be fixedly disposed at the first link member 602. Therefore, the cam plate 645 may be fixedly coupled to the first link member 602 or formed integrally with the first link member 602, so that the cam plate 645 and the first link member 602 may form an integral structure together. Therefore, the cam plate 645 and the first link member 602 may move together as a single unit. In addition, the follower 647 may be immovable relative to the handle portion 110 in a direction parallel to the extension axis 601 of the first link member 602 relative to the first handle portion 110. Therefore, the follower 647 may be restricted or constrained by the first handle portion 110 so that the follower 647 cannot move relative to the handle portion 110 in a direction parallel to the extension axis 601 of the first link member 602. Therefore, when the first link member 602 moves relative to the handle portion 110 along the extension axis 601, the first link member 602 and the cam plate 645 may move relative to the follower 647.

[0195] According to various embodiments, in three-dimensional space, the direction parallel to the extension axis 601 of the first link member 602 can be considered as a first reference direction and can be designated as the x-axis. According to various embodiments, although the follower 647 can be immovable relative to the handle portion 110 in the first reference direction parallel to the extension axis 601 of the first link member 602, the follower 647 can be movable relative to the handle portion 110 in the second reference direction perpendicular to the extension axis 601 of the first link member 602. The first reference direction and the second reference direction can be located in the coronal plane of the extendable controller 600. The coronal plane of the extendable controller 600 can be a plane that divides the extendable controller 600 into a front part and a rear part. The front part of the extendable controller 600 can be a part of the extendable controller 600 in which the controls and control buttons are located. The rear part of the extendable controller 600 can be a part of the extendable controller 600 opposite to the front part of the extendable controller 600. Therefore, the second reference direction can be designated as the y-axis. Therefore, the coronal plane where the first reference direction and the second reference direction are located can be designated as the xy plane. According to various embodiments, the follower 647 can also move relative to the handle portion 110 in a third reference direction perpendicular to the xy plane (i.e., the coronal plane). The third reference direction can correspond to the thickness direction of the extendable controller 600. Therefore, the third reference direction can be designated as the z-axis. Therefore, the follower 647 can also move relative to the handle portion 110 in a third reference direction perpendicular to both the first reference direction and the second reference direction.

[0196] Fig. 8A It shows various embodiments Fig. 6AAA cross-sectional view of the first movement control device 611 of the cam plate 645. According to various embodiments, the cam plate 645 may include a cam track 651. The cam track 651 may define a path for the follower 647 to follow when the first link member 602 moves relative to the first handle portion 110. Therefore, the follower 647 and the cam plate 645 may interact in a manner in which the tip 647a of the follower 647 may engage with the cam track 651 of the cam plate 645. According to various embodiments, when the first link member 602 is in the retracted position, the follower 647 may be located at the first end 651a of the cam track 651 of the cam plate 645, whereby the tip 647a of the follower 647 may engage with the first end 651a of the cam track 651 of the cam plate 645. On the other hand, when the first link member 602 is in the extended position, the follower 647 may be located at the second end 651b of the cam track 651 of the cam plate 645, whereby the tip 647a of the follower 647 may engage with the second end 651b of the cam track 651. The first end 651a of the cam track 651 and the second end 651b of the cam track 651 may be opposite to each other with respect to the extension axis 601 of the link member 602. According to various embodiments, the cam track 651 of the cam plate 645 may be in the form of a groove or a slot or a guide or a rod or a bar, and the tip 647a of the follower 647 may be correspondingly configured to interact with the groove or the slot or the guide or the rod or the bar.

[0197] like Fig. 8A As shown in the example of , according to various embodiments, the cam track 651 of the cam plate 645 may be in the form of a groove. According to various embodiments, the cam track 651 in the form of a groove may include a first dimple 653 at a first end 651a of the cam track 651 and a second dimple 655 at a second end 651b of the cam track 651. Each of the first dimple 653 and the second dimple 655 may be a notch or a depression or a well or a recess. According to various embodiments, when the follower 647 is engaged with the first dimple 653 and the second dimple 655, respectively, the follower 647 may fall into the corresponding first dimple 653 or the second dimple 655. Therefore, when the cam track 651 of the cam plate 645 is in the form of a groove, the tip 647a of the follower 647 may be inserted into the first dimple 653 and the second dimple 655, respectively, so that the follower 647 is considered to fall into the first dimple 653 and the second dimple 655, respectively.

[0198] According to various embodiments, when the first link member 602 is in the retracted position, the follower 647 may be at the first end 651a of the cam track 651 of the cam plate 645. The follower 647 may engage with the first end 651a of the cam track 651 so that the follower 647 may fall into the first recess 653 of the cam track 651, whereby the tip 647a of the follower 647 may fit or be inserted into the first recess 653 of the cam track 651. With the follower 647 falling into the first recess 653 of the cam track 651, the first link member 602 may be restricted from moving along the extension axis 601 of the first link member 602 because the follower 647 is immovable relative to the first handle portion 110 about the extension axis 601 of the first link member 602. Therefore, the follower 647 being fitted or inserted into the first recess 653 of the cam track 651 may cause or result in the first link member 602 being restricted in its movement relative to the first handle portion 110 along the extension axis 601 of the first link member 602. According to various embodiments, when the first link member 602 is in the extended position, the follower 647 may be at the second end 651b of the cam track 651 of the cam plate 645. The follower 647 may engage with the second end 651b of the cam track 651 so that the follower 647 may fall into the second recess 655 of the cam track 651, whereby the tip 647a of the follower 647 may be fitted or inserted into the second recess 655 of the cam track 651. As the follower 647 falls into the second recess 655 of the cam track 651, the first link member 602 may be restricted from moving along the extension axis 601 of the first link member 602 because the follower 647 is immovable relative to the first handle portion 110 about the extension axis 601 of the first link member 602. Therefore, the fitting or insertion of the follower 647 into the second recess 655 of the cam track 651 may cause or result in the restriction of movement of the first link member 602 relative to the first handle portion 110 along the extension axis 601 of the first link member 602.

[0199] According to various embodiments, the cam track 651 may be a single track extending between two points, or may be a closed loop track. Figure 8B An example of a cam track 651 as a closed loop track is shown. According to various embodiments, when the cam track 651 is in the form of a closed loop track, the cam track 651 may be in a circular configuration, an oval configuration, an elliptical configuration, a polygonal configuration, or other suitable closed loop configurations. According to various embodiments, when the cam track 651 is in a polygonal configuration, the cam track 651 may include three or four or more straight line segments arranged in a polygonal configuration.

[0200] like Figure 8BAs shown, according to various embodiments, the cam track 651 may include a closed loop track, wherein the closed loop track may include four straight segments arranged in a diamond configuration. Therefore, in the diamond configuration, the first end 651a of the cam track 651 and the second end 651b of the cam track 651 may be two opposite corners of the diamond configuration. Therefore, the first dimple 653 of the cam track 651 and the second dimple 655 of the cam track 651 may be at two opposite corners of the diamond configuration.

[0201] According to various embodiments, the cam track 651 having a diamond configuration may include a first straight segment 661 and a second straight segment 663 connected in series between a first end 651a of the cam track 651 and a second end 651b of the cam track 651. Thus, the first straight segment 661 and the second straight segment 663 may form a first cam path extending from the first end 651a of the cam track 651 to the second end 651b of the cam track 651. Thus, from a first pocket 653 of the cam track 651 to a second pocket 655 of the cam track 651, the cam track 651 may include a first straight segment 661 followed by a second straight segment 663.

[0202] According to various embodiments, the cam track 651 may include a cam profile having a sharp rise 657 (or steep rise) at a transition between a first dimple 653 of the cam track 651 and a first straight segment 661 of the cam track 651 (see, e.g., Fig. 8A ). The sharp rise 657 in the cam profile can be used to prevent or inhibit the follower 647 from self-crossing from the first recess 653 to the first straight section 661 of the cam track 651. Therefore, when the first link member 602 is in the retracted position (wherein the follower 647 is at the first end 651a of the cam track 651), the sharp rise 657 at the transition between the first recess 653 of the cam track 651 and the first straight section 661 of the cam track 651 can generally retain the follower 647 at the first end 651a of the cam track 651 within the first recess 653.

[0203] According to various embodiments, when the cam track 651 of the cam plate 645 is in the form of a groove, the cam profile may be the shape or profile or contour of the groove bottom surface (or groove bed). Thus, the sharp rise 657 in the cam profile may be an abrupt change in groove depth caused by the first dimple 653 at the first end 651a of the cam track 651 at the transition between the first dimple 653 of the cam track 651 and the first straight section 661 of the cam track 651. According to various embodiments, the sharp rise 657 in the cam profile at the transition between the first dimple 653 of the cam track 651 and the first straight section 661 of the cam track 651 may be in the form of a wall or steep surface 653a extending along a corresponding side of the first dimple 653. Thus, the wall or steep surface 653a of the first dimple 653 on the side corresponding to the transition between the first dimple 653 of the cam track 651 and the first straight section 661 of the cam track 651 may define the sharp rise 657 in the cam profile of the cam track 651. According to various embodiments, the wall or steep surface 653a of the first recess 653 of the cam track 651 may serve as a stopper that blocks the follower 647 from crossing from the first recess 653 of the cam track 651 to the first straight section 661 of the cam track 651 when the follower 647 is in the first recess 653 of the cam track 651, so as to restrict the first link member 602 when the first link member 602 is in the retracted position. According to various embodiments, the wall or steep surface 653a of the first recess 653 of the cam track 651 may have a high slope or an almost vertical slope or an inclined slope, so that the follower 647 may not normally cross the transition between the first recess 653 of the cam track 651 and the first straight section 661 of the cam track 651, and may be blocked or stopped or hindered by the wall or steep surface 653a of the first recess 653 of the cam track 651. In the event that the follower 647 is blocked or impeded or blocked, the follower 647 may be restrained or held in position within the first recess 653 of the cam track 651 such that the first link member 602 may be restrained when the first link member 602 is in the retracted position.

[0204] Fig. 9A and Fig. 9BBB cross-sectional view of the first mobile control device 611 according to various embodiments is shown. According to various embodiments, the input interface 613 of the first mobile control device 611 may be operable to lift the follower 647. Therefore, the input interface 613 of the first mobile control device 611 may be operable to move the follower 647 in the thickness direction (i.e., z-axis) of the extendable controller 600 for lifting the follower 647 relative to the cam track 651 of the cam plate 645. According to various embodiments, when the follower 647 is lifted from the cam track 651 of the cam plate 645, the tip 647a of the follower 647 may rise upward from the groove bottom surface (or groove bed) of the groove forming the cam track 651. Therefore, by operating the input interface 613 of the first mobile control device 611 to interfere with the interaction between the follower 647 and the cam track 651 of the cam plate 645, the follower 647 may be lifted away from the cam track 651 of the cam plate 645.

[0205] According to various embodiments, the input interface 613 of the first motion control device 611 may be operable to lift the follower 647 above the sharp rise 657 at the transition between the first recess 653 of the cam track 651 and the first straight section 661 of the cam track 651, so that the follower 647 can cross from the first recess 653 of the cam track 651 to the first straight section 661 of the cam track 651. Thus, the input interface 613 of the first motion control device 611 may be operable to lift the follower 647 to a height or level higher than the sharp rise 657 at the transition between the first recess 653 of the cam track 651 and the first straight section 661 of the cam track 651, so that the follower 647 can be higher than the first straight section 661 of the cam track 651 (or higher than the sharp rise 657 at the transition). Thus, the tip 647a of the follower 647 can be lifted upward from the bottom of the first recess 653 of the cam track 651 by the input interface 613 of the first motion control device 611. As the follower 647 is lifted to a sharp rise 657 above the transition between the first recess 653 of the cam track 651 and the first straight section 661 of the cam track 651, the follower 647 can then cross from the first recess 653 of the cam track 651 to the first straight section 661 of the cam track 651. After the follower 647 is lifted by the input interface 613 of the first motion control device 611, the cam plate 645 can move relative to the follower 647, wherein the follower 647 follows the first straight section 661 and the second straight section 663 of the cam track 651 of the cam plate 645 (e.g., from the first end 651a of the cam track 651 toward the second end 651b of the cam track 651). Thus, by lifting the follower 647 above the steep rise 657 to cross from the first recess 653 of the cam track 651 to the first straight segment 661 of the cam track 651, the follower 647 may no longer be blocked or hindered or blocked by the wall or steep surface 653a of the first recess 653 of the cam track 651. Thus, the follower 647 may not be restrained or held in position within the first recess 653 of the cam track 651. Thus, the first link member 602 may be released to not be restrained in the retracted position, so that the first link member 602 may move relative to the handle portion 110 (e.g., from the retracted position to the extended position), wherein the follower 647 follows along the first straight segment 661 and the second straight segment 663 of the cam track 651.

[0206] Return to reference Fig. 8AAccording to various embodiments, the cam profile of the cam track 651 may further include a continuous gradual return (or drop or descent) along the first straight segment 661 and the second straight segment 663 of the cam track 651, successively toward the second pocket 655. Thus, the cam profile along the first straight segment 661 and the second straight segment 663 of the cam track 651 from the first end 651a of the cam track 651 to the second end 651b of the cam track 651 may be in the form of a gradual downward slope extending from a sharp rise 657 at the first end 651a of the cam track 651 (i.e., the transition between the first pocket 653 of the cam track 651 and the first straight segment 661 of the cam track 651) toward the second pocket 655 at the second end 651b of the cam track 651. Thus, the second straight section 663 of the cam track 651 can follow the first straight section 661 of the cam track 651, and the first straight section 661 of the cam track 651 and the second straight section 663 of the cam track 651 can together form a continuous descending slope from a sharp rise 657 at the first end 651a of the cam track 651 toward a second recess 655 at the second end 651b of the cam track 651.

[0207] According to various embodiments, when the first link member 602 moves relative to the handle portion 110 (e.g., from the retracted position to the extended position), and the follower 647 follows along the first straight segment 661 and the second straight segment 663 of the cam track 651, the tip 647a of the follower 647 can slide along the bottom surface of the groove along the first straight segment 661 and the second straight segment 663 of the cam track 651. Therefore, when the first link member 602 moves relative to the handle portion 110 (e.g., from the retracted position to the extended position), the tip 647a of the follower 647 can maintain contact with the bottom surface of the groove of the first straight segment 661 and the second straight segment 663 of the cam track 651.

[0208] refer to Fig. 9A and Fig. 9BAccording to various embodiments, the first movement control device 611 may include a follower biasing member 649. The follower biasing member 649 may be operably connected between the first handle portion 110 and the follower 647 to apply a biasing force on the follower 647, thereby pushing the tip 647a of the follower 647 toward the cam track 651. Therefore, the follower biasing member 649 may apply a biasing force to keep the tip 647a of the follower 647 in contact with the bottom surface of the groove of the cam track 651. According to various embodiments, when the follower 647 is in the first recess 653, the follower biasing member 649 may apply a biasing force to keep the follower 647 in the first recess 653. According to various embodiments, when the follower 647 follows the first straight section 661 and the second straight section 663 of the cam track 651, the follower biasing member 649 may apply a biasing force to keep the tip 647a of the follower 647 in contact with the bottom surface of the groove of the first straight section 661 and the second straight section 663 of the cam track 651. According to various embodiments, the follower biasing member 649 may include a spring, such as a leaf spring or a torsion spring, etc. The spring may be coupled to the first handle portion 611. When the spring is a leaf spring or a torsion spring, the legs of the torsion spring or the leaf spring may engage with the follower 647 to apply a biasing force on the follower 647.

[0209] Also like Fig. 9A and Fig. 9B As shown, according to various embodiments, the follower 647 may be a part of an L-shaped structure 669. The L-shaped structure 669 may include an arm portion 669b and an insertion portion 669a serving as the follower 647. The insertion portion 669a of the L-shaped structure 669 (i.e., the follower 647) may engage with the cam track 651 of the cam plate 645. Therefore, the insertion portion 669a of the L-shaped structure 669 (i.e., the follower 647) may be inserted or fitted into a groove forming the cam track 651 of the cam plate 645. Therefore, the free end of the insertion portion 669a of the L-shaped structure 669 (i.e., the follower 647) may be a tip 647a of the follower 647 contacting the bottom surface of the groove of the cam track 651 of the cam plate 645. When the follower 647 is located at the first end 651a of the cam track 651, the insertion portion 669a of the L-shaped structure 669 (i.e., the follower 647) can be in the first recess 653 of the cam track 651, whereby the insertion portion 669a of the L-shaped structure 669 (i.e., the follower 647) can abut against the sharp rise 657 so as to be blocked, hindered, or stopped by the sharp rise 657 of the cam track 651.

[0210] According to various embodiments, one end of the arm portion 669b of the L-shaped structure 669 opposite to the insertion portion 669a of the L-shaped structure 669 (i.e., the follower 647) can be pivoted relative to the first handle portion 110. The pivot axis 669c of the end of the arm portion 669b of the L-shaped structure 669 can be parallel to the extension axis 601 of the first link member 602. Therefore, the L-shaped structure 669 can be pivoted about the pivot axis 669c to lift the tip 647a of the follower 647 (i.e., the free end of the insertion portion 669a of the L-shaped structure 669) away from the cam track 651.

[0211] According to various embodiments, the first handle portion 110 may include a follower support structure 615. The follower 647 may be movably coupled to the follower support structure 615 of the first handle portion 110. For example, an end of the arm portion 669b of the L-shaped structure 669 may be movably coupled to the follower support structure 615 of the first handle portion 110.

[0212] According to various embodiments, the follower support structure 615 may include a slot 617 extending in a direction (i.e., y-axis) perpendicular to the extension axis 601 (i.e., x-axis) of the first link member 602 and the thickness direction (i.e., z-axis) of the extendable controller 600. Therefore, the end of the arm portion 669b of the L-shaped structure 669 may engage with the slot 617 of the follower support structure 615 so as to be pivotable and slidable relative to the slot 617 of the follower support structure 615. Figure 8B As shown, the first straight segment 661 and the second straight segment 663 of the cam track 651 can be two adjacent sides of a diamond-shaped configuration. Therefore, when viewed in a plan view (i.e., an xy plane), the first straight segment 661 and the second straight segment 663 can be angled or can form a curve. Therefore, returning to reference Fig. 9A and Fig. 9BIn a case where the L-shaped structure 669 can slide relative to the groove 617 of the follower support structure 615, the insertion portion 669a of the L-shaped structure 669 (i.e., the follower 647) can slide the end of the arm portion 669b of the L-shaped structure 669 along a direction (i.e., the y-axis) perpendicular to both the extension axis 601 of the first link member 602 (i.e., the x-axis) and the thickness direction of the extendable controller 600 (i.e., the z-axis), thereby following the cam track 651 along the first straight line segment 661 and the second straight line segment 663 of the cam track 651 (even if the first straight line segment 661 and the second straight line segment 663 can be angled or can form a curve). In addition, in the case where the end of the arm portion 669b of the L-shaped structure 669 can pivot relative to the slot 617 of the follower support structure 615, the arm portion 669b of the L-shaped structure 669 can pivot upward to lift or raise the insertion portion 669a of the L-shaped structure 669 (i.e., the follower 647) so that the tip 647a of the follower 647 can be lifted to pass over the sharp rise 657 of the cam track 651 at the transition between the first recess 653 of the cam track 651 and the first straight section 661 of the cam track 651. In addition, the follower biasing member 649 can apply a biasing force on the arm portion 669b of the L-shaped structure 669 to urge the arm portion 669b of the L-shaped structure 669 to pivot downward so as to keep the tip 647a of the follower 647 in contact with the bottom surface of the groove of the cam track 651. For example, when the follower biasing member 649 is a leaf spring or a torsion spring, the leaf spring or torsion spring can be connected to the follower support structure 615, and the legs of the leaf spring or torsion spring can engage with the arm portion 669b of the L-shaped structure 669 to apply a biasing force to push the arm portion 669b of the L-shaped structure 669 to pivot downward.

[0213] According to various embodiments, the input interface 613 of the first mobile control device 611 may include a pusher 613a. The pusher 613a may be used as an intervening member 639 to interfere with the engagement between the follower 647 and the cam track 645. According to various embodiments, the pusher 613a may be configured to engage the follower 647 so that the input interface 613 is operable to drive the pusher 613a to exert a force on the follower 647 to counteract the biasing force of the follower biasing member 649, thereby lifting the tip 647a of the follower 647 away from the cam track 651. Therefore, the pusher 613a and the follower biasing member 649 of the input interface 613 may work in a counteracting manner, wherein the follower biasing member 649 may bias the follower 647 to avoid lifting from the cam track 651, and the pusher 613a of the input interface 613 may be driven to push the follower 647 to counteract the biasing force to lift the follower 647 away from the cam track 651. According to various embodiments, as shown, the pusher 613a of the input interface 613 may engage with the arm portion 669b of the L-shaped structure 669. According to various embodiments, the input interface 613 of the first mobile control device 611 may be in the form of a button, whereby pushing the button may drive the pusher 613a of the input interface 613 to push the follower 647 to overcome the biasing force of the follower biasing member 649 so as to lift the follower 647 (and the tip 647a of the follower 647) away from the cam track 651.

[0214] Return to reference Fig. 8A, the cam profile of the cam track 651 may include a sharp drop 659 (or steep drop) at the transition between the second straight segment 663 and the second recess 655. When the first link member 602 moves relative to the first handle portion 110 (e.g., from the retracted position to the extended position), since the follower 647 follows along the first straight segment 661 and the second straight segment 663 of the cam track 651, when the follower 647 reaches the second end 651b of the cam track 651, the follower 647 may pass over the transition between the second straight segment 663 and the second recess 655 and fall into the second recess 655. Therefore, when the follower 647 passes over the sharp drop 659 to the second recess 655, the follower 647 may fall into the second recess 655. According to various embodiments, the sharp drop 659 in the cam profile can be used to prevent or inhibit the follower 647 from returning from the second pocket 655 to the second straight segment 663 after the follower 647 reaches the second end 651b of the cam track 651 and drops into the second pocket 655 of the cam track 651. Therefore, when the first link member 602 is in the extended position and the follower 647 is at the second end 651b of the cam track 651, the sharp drop 659 at the transition between the second straight segment 663 of the cam track 651 and the second pocket 655 of the cam track 651 can generally keep the follower 647 at the second end 651b of the cam track 651 within the second pocket 655.

[0215] According to various embodiments, when the cam track 651 of the cam plate 645 is in the form of a groove, the sharp drop 659 in the cam profile may be an abrupt change in groove depth caused by the second dimple 655 at the second end 651b of the cam track 651 at the transition between the second straight section 663 of the cam track 651 and the second dimple 655 of the cam track 651. According to various embodiments, the sharp drop 659 in the cam profile at the transition between the second straight section 663 of the cam track 651 and the second dimple 655 of the cam track 651 may be in the form of a wall or steep surface 655a extending along a corresponding side of the second dimple 655. Thus, the wall or steep surface 655a of the second dimple 655 on the side corresponding to the transition between the second straight section 663 of the cam track 651 and the second dimple 655 of the cam track 651 may define the sharp drop 659 in the cam profile of the cam track 651. According to various embodiments, the wall or steep surface 655a of the second recess 655 of the cam track 651 may serve as a stopper that blocks the follower 647 from crossing back from the second recess 655 of the cam track 651 to the second straight section 663 of the cam track 651 when the follower 647 is in the second recess 655 of the cam track 651, so as to restrict the first link member 602 when the first link member 602 is in the extended position. According to various embodiments, the wall or steep surface 655a of the second recess 655 of the cam track 651 may have a high slope or an almost vertical slope or inclination, so that the follower 647 may not be able to normally cross back to the transition between the second straight section 663 of the cam track 651 and the second recess 655 of the cam track 651, and may be blocked or stopped or hindered by the wall or steep surface 655a of the second recess 655 of the cam track 651. In the event that the follower 647 is blocked or impeded or blocked, the follower 647 may be restrained or held in position within the second recess 655 of the cam track 651 such that the first link member 602 may be restrained when the first link member 602 is in the extended position.

[0216] refer to Figure 8BAccording to various embodiments, the cam track 651 having a diamond configuration may include a third straight segment 665 and a fourth straight segment 667 connected in series between the second end 651b of the cam track 651 and the first end 651a of the cam track 651. Thus, the third straight segment 665 and the fourth straight segment 667 may form a second cam path extending from the second end 651b of the cam track 651 to the first end 651a of the cam track 651. Thus, from the second pocket 655 of the cam track 651 to the first pocket 653 of the cam track 651, the cam track 651 may include the third straight segment 665 followed by the fourth straight segment 667. The first cam path and the second cam path may be two separate and distinct cam paths interconnecting the first end 651a of the cam track 651 to the second end 651b of the cam track 651 (or the first pocket 653 of the cam track 651 and the second pocket 655 of the cam track 651).

[0217] According to various embodiments, the cam profile of the cam track 651 can include an additional (or second) sharp rise (or steep rise) at the transition between the second pocket 655 of the cam track 651 and the third straight segment 665 of the cam track 651 (similar to the sharp rise 657 between the first pocket 653 of the cam track 651 and the first straight segment 661 of the cam track 651). The additional sharp rise of the cam profile can be used to prevent or inhibit the follower 647 from crossing from the second pocket 655 to the third straight segment 665 of the cam track 651 on its own. Therefore, when the first link member 602 is in the extended position and the follower 647 is located at the second end 651b of the cam track 651, the additional sharp rise at the transition between the second pocket 655 of the cam track 651 and the third straight segment 665 of the cam track 651 can generally keep the follower 647 at the second end 651b of the cam track 651 within the second pocket 655.

[0218] According to various embodiments, when the cam track 651 of the cam plate 645 is in the form of a groove, the additional steep rise of the cam profile may be an abrupt change in groove depth caused by the second dimple 655 at the second end 651b of the cam track 651 at the transition between the second dimple 655 of the cam track 651 and the third straight section 665 of the cam track 651. According to various embodiments, the additional steep rise of the cam profile at the transition between the second dimple 655 of the cam track 651 and the third straight section 665 of the cam track 651 may be in the form of a wall or steep surface extending along a corresponding side of the second dimple 655. Thus, the wall or steep surface of the second dimple 655 on the side corresponding to the transition between the second dimple 655 of the cam track 651 and the third straight section 665 of the cam track 651 may define the additional steep rise of the cam profile of the cam track 651. According to various embodiments, the wall or steep surface of the second recess 655 of the cam track 651 may serve as a stopper that blocks the follower 647 from crossing from the second recess 655 of the cam track 651 to the third straight segment 665 of the cam track 651 when the follower 647 is in the second recess 655 of the cam track 651, so as to limit the first link member 602 when the first link member 602 is in the extended position. According to various embodiments, the wall or steep surface of the second recess 655 of the cam track 651 may have a high slope or an almost vertical slope or inclination, so that the follower 647 may not be able to normally cross the transition between the second recess 655 of the cam track 651 and the third straight segment 665 of the cam track 651, and may be blocked or stopped or hindered by the wall or steep surface of the second recess 655 of the cam track 651. In the event that the follower 647 is blocked or hindered or prevented, the follower 647 can be restrained or held in a proper position within the second recess 655 of the cam track 651, so that when the first link member 602 is in the extended position, the first link member 602 can be restrained.

[0219] According to various embodiments, the input interface 613 of the first motion control device 611 may be operable to lift the follower 647 above the additional steep rise at the transition between the second recess 655 of the cam track 651 and the third straight segment 665 of the cam track 651, so that the follower 647 can cross from the second recess 655 of the cam track 651 to the third straight segment 665 of the cam track 651. Thus, the input interface 613 of the first motion control device 611 may be operable to lift the follower 647 to a higher height or level than the additional steep rise at the transition between the second recess 655 of the cam track 651 and the third straight segment 665 of the cam track 651, so that the follower 647 can be above the third straight segment 665 of the cam track 651 (or above the additional steep rise at the transition). Thus, the tip 647a of the follower 647 can be lifted upward from the bottom of the second recess 655 of the cam track 651 by the input interface 613 of the first motion control device 611. As the follower 647 is lifted above the additional steep rise at the transition between the second recess 655 of the cam track 651 and the third straight segment 665 of the cam track 651, the follower 647 can then cross over from the second recess 655 of the cam track 651 to the third straight segment 665 of the cam track 651. After the follower 647 is lifted by the input interface 613 of the first motion control device 611, the cam plate 645 can move relative to the follower 647, wherein the follower 647 follows the third straight segment 665 and the fourth straight segment 667 of the cam track 651 of the cam plate 645 (e.g., from the second end 651b of the cam track 651 toward the first end 651a of the cam track 651). Thus, by lifting the follower 647 over the additional steep rise to cross from the second recess 655 of the cam track 651 to the third straight segment 665 of the cam track 651, the follower 647 may no longer be blocked or hindered or blocked by the wall or steep surface of the second recess 655 of the cam track 651. Thus, the follower 647 may be freed from being restrained or maintained in position within the second recess 655 of the cam track 651. Thus, the first link member 602 may be released from being restrained in the extended position so that the first link member 602 may be moved relative to the handle portion 110 (e.g., from the extended position to the retracted position) with the follower 647 following along the third straight segment 665 and the fourth straight segment 667 of the cam track 651.

[0220] Return to reference Fig. 8AAccording to various embodiments, the cam profile of the cam track 651 may also include a continuous gradual return (or drop or descent) along the third straight segment 665 of the cam track 651 and the fourth straight segment 667 of the cam track 651, successively toward the first pocket 653. Thus, the cam profile along the third straight segment 665 and the fourth straight segment 667 of the cam track 651 from the second end 651b of the cam track 651 to the first end 651a of the cam track 651 (similar to along the first straight segment 661 and the second straight segment 663 of the cam track 651) may be in the form of a gradual downward slope extending from an additional steep rise at the second end 651b of the cam track 651 (i.e., the transition between the second pocket 655 of the cam track 651 and the third straight segment 665 of the cam track 651) toward the first pocket 653 at the first end 651a of the cam track 651. Thus, the fourth straight segment 667 of the cam track 651 can follow the third straight segment 665 of the cam track 651, and the third straight segment 665 of the cam track 651 and the fourth straight segment 667 of the cam track 651 can together form a continuous descending slope from another sharp rise at the second end 651b of the cam track 651 toward the first pit 653 at the first end 651a of the cam track 651.

[0221] According to various embodiments, when the first link member 602 moves relative to the handle portion 110 (e.g., from the extended position to the retracted position), and the follower 647 follows along the third straight segment 665 and the fourth straight segment 667 of the cam track 651, the tip 647a of the follower 647 may slide along the bottom surface of the groove along the third straight segment 665 and the fourth straight segment 667 of the cam track 651. Therefore, when the first link member 602 moves relative to the handle portion 110 (e.g., from the extended position to the retracted position), the tip 647a of the follower 647 may maintain contact with the bottom surface of the groove of the third straight segment 665 and the fourth straight segment 667 of the cam track 651.

[0222] According to various embodiments, when the follower 647 is in the form of an insertion portion 669a of an L-shaped structure 669, the insertion portion 669a of the L-shaped structure 669 (i.e., the follower 647) can be in the second recess 655 of the cam track 651, whereby the insertion portion 669a of the L-shaped structure 669 (i.e., the follower 647) can abut against the sharp rise 657 so that the follower 647 is blocked, hindered, or stopped by the sharp rise 657 of the cam track 651 when the follower 647 is at the second end 651b of the cam track 651.

[0223] like Figure 8BAs shown, the third straight segment 665 and the fourth straight segment 667 of the cam track 651 may be two corresponding adjacent sides of the diamond structure. Therefore, the third straight segment 665 and the fourth straight segment 667 may be angled or may be curved. According to various embodiments, when the end of the arm portion 669b of the L-shaped structure 669 is engaged with the slot 617 of the follower support structure 615 so as to be pivotable and slidable relative to the slot 617 of the follower support structure 615, the insertion portion 669a of the L-shaped structure 669 (i.e., the follower 647) can follow the cam track 651 along the third straight segment 665 and the fourth straight segment 667 of the cam track 651 (even though the third straight segment 665 and the fourth straight segment 667 may be angled or may be curved) by sliding the L-shaped structure 669 in a direction (i.e., the y-axis) perpendicular to the extension axis 601 of the first link member 602 (i.e., the x-axis) and the thickness direction (i.e., the z-axis) of the extendable controller 600.

[0224] According to various embodiments, when the follower 647 is located at the second end 651b of the cam track 651, the follower biasing member 649 can apply a biasing force to keep the follower 647 in the second recess 655. In addition, when the first link member 602 moves relative to the first handle portion 110 (e.g., from the second end 651b of the cam track 651 toward the first end 651a of the cam track 651), the follower biasing member 649 can apply a biasing force to keep the tip 647a of the follower 647 in contact with the bottom surface of the groove of the cam track 651 along the third straight section 665 and the fourth straight section 667 of the cam track 651. According to various embodiments, the input interface 613 of the first mobile control device 611 can be operated to drive the pusher 613a of the input interface 613 to apply a force on the follower 647 to offset the biasing force of the follower biasing member 649 so as to lift the tip 647a of the follower 647 away from the cam track 651, thereby crossing the additional sharp rise at the transition between the second recess 655 of the cam track 651 and the third straight section 665 of the cam track 651.

[0225] Return to reference Fig. 8A, the cam profile of the cam track 651 may include an additional (or second) sharp drop 659 at the transition between the fourth straight segment 667 and the first recess 653. When the first link member 602 moves relative to the first handle portion 110 (e.g., from the extended position to the retracted position), since the follower 647 follows along the third straight segment 665 and the fourth straight segment 667 of the cam track 651, when the follower 647 reaches the first end 651a of the cam track 651, the follower 647 may pass over the transition between the fourth straight segment 667 and the first recess 653 and fall into the first recess 653. Therefore, when the follower 647 passes over the additional sharp drop to the first recess 653, the follower 647 may fall into the first recess 653. According to various embodiments, the additional sharp drop in the cam profile can be used to prevent or inhibit the follower 647 from crossing from the first pocket 653 back to the fourth straight segment 667 after the follower 647 reaches the first end 651a of the cam track 651 and falls into the first pocket 653 of the cam track 651. Therefore, when the first link member 602 is in the retracted position and the follower 647 is at the first end 651a of the cam track 651, the additional sharp drop at the transition between the fourth straight segment 667 of the cam track 651 and the first pocket 653 of the cam track 651 can generally keep the follower 647 at the first end 651a of the cam track 651 within the first pocket 653.

[0226] According to various embodiments, when the cam track 651 of the cam plate 645 is in the form of a groove, the additional sharp drop in the cam profile may be a sharp change in groove depth caused by the first dimple 653 at the first end 651a of the cam track 651 at the transition between the fourth straight segment 667 of the cam track 651 and the first dimple 653 of the cam track 651. According to various embodiments, the additional sharp drop in the cam profile at the transition between the fourth straight segment 667 of the cam track 651 and the first dimple 653 of the cam track 651 may be in the form of a wall or steep surface extending along a corresponding side of the first dimple 653. Thus, the wall or steep surface of the first dimple 653 on the side corresponding to the transition between the fourth straight segment 667 of the cam track 651 and the first dimple 653 of the cam track 651 may define the additional sharp drop in the cam profile of the cam track 651. According to various embodiments, the wall or steep surface of the first recess 653 of the cam track 651 may serve as a stopper that blocks the follower 647 from crossing back from the first recess 653 of the cam track 651 to the fourth straight segment 667 of the cam track 651 when the follower 647 is in the first recess 653 of the cam track 651, so as to restrict the first link member 602 when the first link member 602 is in the retracted position. According to various embodiments, the wall or steep surface of the first recess 653 of the cam track 651 may have a high slope or an almost vertical slope or inclination, so that the follower 647 may not be able to normally cross back to the transition between the fourth straight segment 667 of the cam track 651 and the first recess 653 of the cam track 651, and may be blocked or stopped or hindered by the wall or steep surface of the first recess 653 of the cam track 651. In the event that the follower 647 is blocked or impeded or stopped, the follower 647 may be restrained or held in position within the first recess 655 of the cam track 651 such that the first link member 602 may be restrained when the first link member 602 is in the retracted position.

[0227] Return to reference Fig. 7A and Figure 7BAccording to various embodiments, the extendable controller 600 may further include a motion assist device 671. The motion assist device 671 may be operably connected between the first link member 602 and the first handle portion 110 to actuate the first link member 602 so as to automatically move the first link member 602 between the retracted position and the extended position relative to the first handle portion 110 when the input interface 613 is operated to release the first link member 602 so that it is not restricted. Therefore, the motion assist device 671 may be configured to advance or drive the first link member 602 to move relative to the first handle portion 110 when the first link member 602 is not restricted (e.g., the follower 647 is lifted out of the first recess 653 of the cam plate 645 or the second recess 655 of the cam plate 645). According to various embodiments, when the first link member 602 is released from being restrained in the retracted position (e.g., when the follower 647 is lifted over the sharp rise 657 at the transition between the first recess 653 of the cam track 651 of the cam plate 645 and the first straight section 661 of the cam track 651 of the cam plate 645), the motion assist device 671 can automatically move the first link member 602 from the retracted position to the extended position relative to the first handle portion 110. According to various embodiments, when the first link member is released from being restrained in the extended position (e.g., when the follower 647 is lifted over the additional sharp rise at the transition between the second recess 655 of the cam track 651 of the cam plate 645 and the third straight section 665 of the cam track 651 of the cam plate 645), the motion assist device 671 can automatically move the first link member 602 from the extended position to the retracted position relative to the first handle portion 110.

[0228] According to various embodiments, when the first link member 602 is respectively restricted in the retracted position and the extended position, the motion assisting device 671 may have potential energy. Therefore, when the first link member is released so that it is not restricted in the retracted position or the extended position, the motion assisting device 671 may convert the potential energy into kinetic energy for moving the first link member 602 relative to the first handle portion 110. According to various embodiments, the motion assisting device 671 may be configured to convert the potential energy into kinetic energy using elastic potential energy, electromagnetic potential energy, gravitational potential energy, etc. Therefore, the motion assisting device 671 may include a sub-device capable of storing such potential energy and converting such potential energy into kinetic energy to move the first link member 602 relative to the first handle portion 110.

[0229] As an example, according to various embodiments, the motion assist device 671 may include a link member biasing sub-device 681. The link member biasing sub-device 681 may be capable of storing elastic potential energy and converting the elastic potential energy into kinetic energy to move the first link member 602 relative to the first handle portion 110. According to various embodiments, the link member biasing sub-device 681 may be connected between the first handle portion 110 and the first link member 602. Therefore, when the first link member 602 is respectively restricted in the retracted position and the extended position, the relative movement between the first link member 602 and the first handle portion 110 may stretch or compress the link member biasing sub-device 681 so that the elastic potential energy is stored in the link member biasing sub-device 681. Therefore, when the first link member 602 is released so that it is not restricted in the retracted position or the extended position, the link member biasing sub-device 681 may convert the elastic potential energy into kinetic energy for moving the first link member 602 relative to the first handle portion 110 between the retracted position and the extended position.

[0230] refer to Fig. 7A According to various embodiments, when the first link member 602 is in the retracted position, the link member biasing sub-device 681 can apply a biasing force (due to the stored elastic potential energy) to urge the first link member 602 to move from the retracted position toward the extended position relative to the first handle portion 110. When the first link member 602 is restrained in the retracted position, the biasing force of the link member biasing sub-device 681 can cause the follower 647 to abut against the wall or steep surface 653a of the first recess 653 of the cam track 651, thereby defining a sharp rise 657 at the transition between the first recess 653 of the cam track 651 and the first straight section 661 of the cam track 651. However, when the follower 647 is lifted by operating the input interface 613 so that the follower 647 crosses from the first recess 653 of the cam track 651 to the first straight section 661 of the cam track 651, the biasing force of the link member biasing sub-device 681 can cause the first link member 602 to move from the retracted position toward the extended position relative to the first handle portion 110, wherein the cam plate 645 slides relative to the follower 647 when the follower 647 follows the first straight section 661 of the cam track 651 and the second straight section 663 of the cam track 651.

[0231] As shown, according to various embodiments, the link member biasing sub-device 681 may include a pair of coil springs 683, 685 disposed on opposite sides of the first link member 602 across the extension axis 601. Therefore, the pair of coil springs 683, 685 may be disposed at two opposite longitudinal sides of the first link member 602, respectively. According to various embodiments, a first end of each coil spring 683, 685 may be coupled to the first link member 602, and a second end of each coil spring 683, 685 may be coupled to the first handle portion 110. Therefore, each coil spring 683, 685 may interconnect a corresponding side of the first link member 602 with the first handle portion 110.

[0232] According to various embodiments, the pair of coil springs 683, 685 can be arranged in a symmetrical manner with the extension axis 601 as the symmetry axis. Therefore, when the first link member 602 moves along the extension axis 601 relative to the first handle portion 110, the pair of coil springs 683, 685 can be stretched or compressed in a similar manner, respectively. Therefore, the pair of coil springs 683, 685 can act in a coordinated manner to apply a biasing force and move the first link member 602 along the extension axis 601 relative to the first handle portion 110.

[0233] According to various embodiments, when the first link member 602 is in the retracted position, each coil spring 683, 685 may be in a tensioned state and may be oriented to form an acute angle with respect to the extension axis 601. Therefore, each coil spring 683, 685 may be stretched and oriented to be angled toward the extension axis 601 in a retracted direction along the extension axis 601. Therefore, the second end of each coil spring 683, 685 may be in front of the first end of each coil spring 683, 685 with respect to the extension direction along the extension axis 601.

[0234] refer to Figure 7BAccording to various embodiments, when the first link member 602 is in the extended position, the link member biasing sub-device 681 can apply a biasing force (due to the stored elastic potential energy) to urge the first link member 602 to move from the extended position toward the retracted position relative to the first handle portion 110. When the first link member 602 is constrained in the extended position, the biasing force of the link member biasing sub-device 681 can cause the follower 647 to abut against a wall or steep surface of the second pocket 655 of the cam track 651, thereby defining an additional steep rise at the transition between the second pocket 655 of the cam track 651 and the third straight segment 665 of the cam track 651. However, when the follower 647 is lifted by operating the input interface 613 so that the follower 647 crosses from the second recess 655 of the cam track 651 to the third straight section 665 of the cam track 651, the biasing force of the link member biasing sub-device 681 can cause the first link member 602 to move from the extended position toward the retracted position relative to the first handle portion 110, wherein the cam plate 645 slides relative to the follower 647 as the follower 647 follows the third straight section 665 of the cam track 651 and the fourth straight section 667 of the cam track 651.

[0235] As shown, according to various embodiments, when the first link member 602 is in the extended position, each coil spring 683, 685 may be in a tensioned state and may be oriented to form an acute angle relative to the extension axis 601. Therefore, each coil spring 683, 685 may be stretched and oriented to be angled toward the extension axis 601 in the extension direction along the extension axis 601. Therefore, relative to the retraction direction along the extension axis 601, the second end of each coil spring 683, 685 may be in front of the first end of each coil spring 683, 685.

[0236] According to various embodiments, the linkage member biasing subassembly 681 can be configured to automatically move the first linkage member 602 relative to the first handle portion 110 from the retracted position to the extended position or from the extended position to the retracted position, or in both directions.

[0237] According to various embodiments, in order to enable the link member biasing sub-device 681 to automatically move the first link member 602 relative to the first handle portion 110 in two directions (i.e., from a retracted position to an extended position and from an extended position to a retracted position), the first end of each coil spring 683, 685 can be pivotally connected to the first link member 602, and the second end of each coil spring 683, 685 can be pivotally connected to the first handle portion 110.

[0238] In this way, when the first link member 602 in the retracted position is released from restriction via the input interface 613 of the first movement control device 611, each coil spring 683, 685 can be contracted to apply a biasing force to move the first link member 602 from the retracted position toward the extended position along the extension axis 601. Since each coil spring 683, 685 is pivotally coupled to the first link member 602 and pivotally coupled to the first handle portion 110, when the first link member 602 moves relative to the first handle portion 110 (from the retracted position toward the extended position), each coil spring 683, 685 can pivot about its second end relative to the first handle portion 110, and can pivot about its first end relative to the first link member 602. When the first link member 602 reaches the equilibrium point, whereby the pair of coil springs 683, 685 are fully contracted and aligned along a straight line perpendicular to the extension axis 602 (or in a coaxial manner), the first link member 602 can continue to move through the equilibrium point relative to the first handle portion 110 and toward the extended position due to the extension momentum generated by the sudden release of the first link member 602 from being restricted in the retracted position. In the case where the first link member 602 continues to move through the equilibrium point relative to the first handle portion 110 and toward the extended position due to the extension momentum, each coil spring 683, 685 can begin to extend, wherein its first end extends away from the second end in the extension direction. According to various embodiments, the extension momentum can be sufficient to continue to move the first link member 602 toward the extended position until the first link member is restricted in the extended position. According to various embodiments, when there is insufficient momentum to move the first link member 602 relative to the first handle portion 110 until the first link member 602 reaches the extended position, the user can pull the first handle portion 110 and the first link member 602 apart until the first link member 602 reaches the extended position and is restrained in the extended position.

[0239] Similarly, when the first link member 602 in the extended position is released via the input interface 613 of the first movement control device 611 so that it is not restricted, each coil spring 683, 685 can be contracted to apply a biasing force to move the first link member 602 from the extended position toward the retracted position along the extension axis 601. Since each coil spring 683, 685 is pivotally coupled to the first link member 602 and pivotally coupled to the first handle portion 110, when the first link member 602 moves relative to the first handle portion 110 (from the extended position toward the retracted position), each coil spring 683, 685 can pivot about its second end relative to the first handle portion 110, and can pivot about its first end relative to the first link member 602. When the first link member 602 reaches the equilibrium point, whereby the pair of coil springs 683, 685 are fully contracted and aligned along a straight line perpendicular to the extension axis 602 (or in a coaxial manner), the first link member 602 can continue to pass the equilibrium point relative to the first handle portion 110 and move toward the retracted position due to the retraction momentum generated by the sudden release of the first link member 602 from being restricted in the extended position. In the case where the first link member 602 continues to pass the equilibrium point relative to the first handle portion 110 and moves toward the retracted position due to the extension momentum, each coil spring 683, 685 can begin to extend, wherein its first end extends away from the second end in the retracted direction. According to various embodiments, the retraction momentum can be sufficient to continue to move the first link member 602 toward the retracted position until the first link member 602 is restricted in the extended position. According to various embodiments, when there is insufficient momentum to move the first link member 602 relative to the first handle portion 110 until the first link member 602 reaches the retracted position, the user may pull the first handle portion 110 and the first link member 602 together until the first link member 602 reaches the retracted position and is trapped in the retracted position.

[0240] Various embodiments have provided an extendable controller that can synchronously (or simultaneously) extend or retract a first handle portion and a second handle portion in unison (or symmetrically) in opposite directions relative to an elongated bridge. Various embodiments also provide an extendable controller that can be extended twice via a link member for the extendable controller so as to be able to be assembled to a mobile phone and a tablet computer. Various embodiments also provide an extendable controller that is reliable and durable and can provide stable and balanced extension and retraction of the extendable controller.

[0241] Although the present invention has been specifically shown and described with reference to specific embodiments, it should be understood by those skilled in the art that various changes, modifications, variations in form and detail may be made therein without departing from the scope of the present invention as defined by the appended claims. Therefore, the scope of the present invention is indicated by the appended claims, and is intended to include all changes within the meaning and scope of the equivalents of the claims.

Claims

1. An extendable controller, comprising: handle part; an elongated bridge telescopically extendable relative to the handle portion along a longitudinal axis of the elongated bridge; a link member disposed between the handle portion and the elongated bridge, wherein an end portion of the elongated bridge is slidably engaged with the link member so as to be telescopically extendable relative to the link member along a longitudinal axis of the elongated bridge, wherein the link member is movable relative to the handle portion between a retracted position and an extended position along an extension axis that is parallel to or coincident with the longitudinal axis of the elongated bridge; and A movement control device, the movement control device is operably connected between the link member and the handle portion to limit the movement of the link member relative to the handle portion between the retracted position and the extended position when the link member is respectively in the retracted position and the extended position, wherein the movement control device includes an input interface, the input interface is operable to release the link member from being restricted when the link member is respectively in the retracted position and the extended position, so that the link member can move relative to the handle portion between the retracted position and the extended position.

2. The extendable controller according to claim 1, in, The movement control device comprises a translation cam mechanism, The translation cam mechanism comprises a cam plate fixedly arranged at the link member and a follower associated with the handle portion. The follower is immovable relative to the handle portion in a direction parallel to an extension axis of the link member relative to the handle portion.

3. The extendable controller according to claim 2, in, The cam plate includes a cam track having a first recess at a first end of the cam track and a second recess at a second end of the cam track, the first end of the cam track and the second end of the cam track being opposite to each other relative to an extension axis of the link member, Wherein, when the follower falls into the first recess of the cam track, the link member is restrained in the retracted position, and when the follower falls into the second recess of the cam track, the link member is restrained in the extended position.

4. The extendable controller according to claim 3, in, The cam track comprises a closed loop track, The closed-loop track includes four straight segments arranged in a diamond configuration. Wherein, the first pit and the second pit are located at two opposite corners of the diamond structure.

5. The extendable controller according to claim 4, in, the cam track comprises a first straight line segment from the first pocket to the second pocket followed by a second straight line segment, Therein, the cam track comprises a cam profile having a steep rise at a transition between the first pocket and the first straight section and a continuous gradual return along the first straight section and the second straight section towards the second pocket.

6. The extendable controller according to claim 5, in, The sharp rise at the transition between the first recess and the first straight section is in the form of a wall or steep surface extending along the corresponding side of the first recess so as to serve as a stopper, which blocks the follower from crossing from the first recess to the first straight section when the follower is in the first recess so as to restrict the link member when the link member is in the retracted position.

7. The extendable controller according to claim 6, in, The input interface of the movement control device is operable to lift the follower above the sharp rise to cross from the first recess to the first straight section so as to release the link member from restraint so that the link member can move relative to the handle portion and the follower follows along the first straight section and the second straight section.

8. The extendable controller according to claim 7, in, The cam profile includes a sharp drop at a transition between the second straight section and the second pocket, wherein when the follower crosses the sharp drop into the second pocket, the sharp drop acts as a stopper blocking the follower from crossing from the second pocket back to the second straight section so as to confine the follower in the second pocket, thereby confining the link member when the link member is in the extended position.

9. The extendable controller according to claim 8, in, The closed-loop track comprises a third straight-line segment from the second pocket to the first pocket, followed by a fourth straight-line segment, wherein the cam profile of the closed-loop track has a further steep rise at the transition between the second pocket and the third straight-line segment and a further continuous gradual return towards the first pocket along the third straight-line segment and the fourth straight-line segment.

10. The extendable controller according to claim 9, in, A further steep rise at the transition between the second recess and the third straight section is in the form of a wall or steep surface extending along the corresponding side of the second recess so as to act as a stop that blocks the follower from crossing from the second recess to the third straight section when the follower is in the second recess so as to restrict the link member when the link member is in the extended position.

11. The extendable controller according to claim 10, in, The input interface of the movement control device is operable to lift the follower above the additional sharp rise to cross from the second recess to the third straight line segment so as to release the link member from restraint so that the link member can move relative to the handle portion and the follower follows along the third straight line segment and the fourth straight line segment.

12. The extendable controller according to claim 11, in, The cam profile includes an additional sharp drop at the transition between the fourth straight section and the first pocket, wherein, when the follower crosses the additional sharp drop into the first pocket, the additional sharp drop acts as a stop to block the follower from crossing from the first pocket back to the fourth straight section so as to confine the follower in the first pocket, thereby confining the link member when the link member is in the retracted position.

13. The extendable controller according to claim 3, in, The movement control device includes a follower biasing member operably connected between the handle portion and the follower to apply a biasing force on the follower to urge a tip end of the follower toward the cam track.

14. The extendable controller according to claim 13, in, The input interface of the motion control device includes a pusher configured to engage the follower such that the input interface is operable to drive the pusher to exert a force on the follower to counteract the biasing force of the follower biasing member to lift the tip of the follower away from the cam track.

15. The extendable controller according to claim 13, in, The follower biasing member comprises a leaf spring or a torsion spring coupled to the handle portion and wherein a leg of the leaf spring or the torsion spring engages with the follower to exert a biasing force on the follower.

16. The extendable controller according to claim 1 further comprises a motion assist device, which is operably connected between the link member and the handle portion to actuate the link member so that when the input interface is operated to release the link member so that it is not restricted, the link member is automatically moved between the retracted position and the extended position relative to the handle portion.

17. The extendable controller according to claim 16, in, The motion assist device includes a link member biasing sub-device connected between the handle portion and the link member, Wherein, when the link member is in the retracted position, the link member biasing sub-assembly applies a biasing force to urge the link member to move from the retracted position toward the extended position relative to the handle portion.

18. The extendable controller according to claim 17, in, The link member biasing subassembly applies a biasing force to urge the link member to move relative to the handle portion from the extended position toward the retracted position when the link member is in the extended position.

19. The extendable controller according to claim 17, in, The link member biasing sub-assembly includes a pair of coil springs disposed on opposite sides of the link member across the extension axis, wherein a first end of each coil spring is coupled to the link member and a second end of each coil spring is coupled to the handle portion, Wherein, when the link member is in the retracted position, each coil spring is in tension and oriented to form an acute angle relative to the extension axis, whereby the second end of each coil spring is located in front of the first end of each coil spring relative to the extension direction along the extension axis.

20. The extendable controller according to claim 18, in, The link member biasing sub-assembly includes a pair of coil springs disposed on opposite sides of the link member across the extension axis, wherein a first end of each coil spring is pivotally coupled to the link member and a second end of each coil spring is pivotally coupled to the handle portion, wherein, when the link member is in the retracted position, each coil spring is in tension and oriented to form an acute angle with respect to the extension axis, whereby the second end of each coil spring is located in front of the first end of each coil spring with respect to the extension direction along the extension axis, wherein, when the link member in the retracted position is released via the input interface so that it is not restricted, each coil spring contracts to apply a biasing force to move the link member from the retracted position toward the extended position along the extension axis, each coil spring pivots about its second end relative to the handle portion, and continues to move the link member toward the extended position with the extension momentum until the link member is restricted in the extended position, and each coil spring extends with its first end extending away from the second end in the extension direction, wherein, when the link member is in the extended position, each coil spring is in tension and oriented to form an acute angle with respect to the extension axis, whereby the second end of each coil spring is located forward of the first end of each coil spring with respect to a retraction direction along the extension axis, the retraction direction and the extension direction being opposite directions along the extension axis, Wherein, when the link member in the extended position is released via the input interface so that it is not restricted, each coil spring contracts to apply a biasing force to move the link member from the extended position toward the retracted position along the extension axis, each coil spring pivots about its second end relative to the handle portion, and as the retraction momentum continues to move the link member toward the retracted position until the link member is restricted in the retracted position, each coil spring extends with its first end extending away from the second end along the retraction direction.

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