Telescopic member and mechanism thereof

Abstract

A telescoping mechanism includes a plurality of hollow telescoping blade segments. The mechanism includes a threaded spindle having a spindle thread disposed within the telescoping blade segments, a plurality of nuts configured to correspond to and connect with the spindle, and a power mechanism configured to rotate the spindle. Each of the nuts is respectively engaged at a proximal end portion of each of the hollow blade segments, and the nuts have a nut thread that corresponds to the spindle thread. The nut thread is configured such that the nuts will move back and forth on the spindle thread as the spindle is rotated; however, if a distal telescoping blade segment is pushed into a suitably rigid body or object beyond a given threshold force, the nut thread will slide over the spindle thread to allow any extended blade segments to retract.

Description

Technical Field

[0001] The present invention relates to a telescopic mechanism for extending a telescopic section, and in particular, a telescopic section extension and retraction mechanism configured to extend and retract a section (i.e., a sleeve-shaped sequential section). Background Technology

[0002] Toy swords are popular toys with a large market. Their extendable or retractable features add to the fun.

[0003] Examples of toy swords or sabers with telescopic features are disclosed in US 7,611,398 (Hasbro Inc., 2009-11-03) and US 10,500,518 (Graves, 2019-12-10); a telescopic mechanism for a camera mount is also disclosed in US 7,684,694 (Fromm; 2010-03-23). Summary of the Invention

[0004] This invention relates to a telescopic component and its mechanism. The telescopic component may be composed of a toy sword, or composed of or incorporated into several other products.

[0005] According to one aspect of the invention, a telescopic mechanism for a toy sword, etc., is provided. The mechanism includes a plurality of hollow telescopic blade sections, each having at least a proximal blade section and a distal blade section. The mechanism further includes: a threaded spindle having a main thread, disposed within the telescopic blade section; a plurality of nuts configured to correspond to and engage with the spindle; and a power mechanism configured to rotate the spindle. Each of the nuts engages respectively at the proximal portion of each of the hollow blade sections, and the nut has a nut thread corresponding to the spindle thread. The nut thread is suitably rigid, so that the nut will move back and forth on the spindle thread when the spindle rotates, but the nut thread is sufficiently flexible and elastic, so that if the distal telescopic blade section is pushed into a suitably rigid body or object with a force exceeding a given threshold, the nut thread will slide across the spindle thread to allow any protruding blade section to retract.

[0006] The nut thread may include toothed members. These toothed members may be arranged in a spiral staircase pattern at different heights or levels around the corresponding nut. The nut may include toothed member side supports located on the sides of the toothed members. The nut thread may be composed of upwardly projecting petal-shaped protrusions having ridges for engagement with the spindle thread. The toothed member side supports may be Y-shaped.

[0007] The nut can be configured to be attached to a corresponding proximal end of the blade section. The nut can be attached to the corresponding proximal end of the blade section via one or more segment connecting elements.

[0008] One or more segment connecting elements may include shoulder members configured to engage with corresponding spaced openings or cuts at the proximal end of the respective blade segment.

[0009] The nut may include one or more nut-to-segment friction members having an elastic arm with an outward-facing shoulder to provide limited but minimal frictional resistance to the blade segment, thereby preventing the blade segment from retracting spontaneously before it is needed.

[0010] Nut threads may include a flexible and resilient central annular element. Nut threads may include a flexible and resilient strip. Nut threads may include a flexible and resilient helical member. Nut threads may include a goblet-shaped resilient spindle-threaded engagement element. Nut threads may include petal-shaped protrusions with ridges.

[0011] The blade section may have an outward step at its proximal end and a corresponding inward shoulder at its distal end, or vice versa, to prevent the blade sections from separating from each other during extension.

[0012] The spindle may include a nut / segment braking mechanism or a segment extension limiting mechanism to prevent the blade segments from separating from each other. The nut / segment braking mechanism or segment extension limiting mechanism may be configured to prevent each blade segment from extending before the previously extended blade segment has fully extended. The nut / segment braking mechanism or segment extension limiting mechanism may include a brake ring. The nut / segment braking mechanism or segment extension limiting mechanism may include one or more friction elements disposed in the proximal inner end of the blade segment. The nut / segment braking mechanism or segment extension limiting mechanism may include a limiting rod, the proximal end of which is attached to the hilt of the sword. The nut / segment braking mechanism or segment extension limiting mechanism may include a limiting rod, the limiting rod including a rotatable wheel at its distal end.

[0013] The blade can have one of the following shapes: a gradually tapering cylindrical shape, a gradually tapering square outline, a gradually tapering square outline, a gradually tapering rectangular outline, a gradually tapering elliptical outline, and a gradually tapering polygonal outline.

[0014] The sword may include a segment retainer. The power mechanism may include a motor and a power source. The power mechanism may include a manual power mechanism.

[0015] The mechanism may include a blade extension stop, which includes an outward step at the proximal end of the blade, corresponding to an inward shoulder at the distal end of the blade, or vice versa, thereby stopping the blade after it has extended to its predetermined full extent.

[0016] The blade section may include a section rotation prevention mechanism to prevent the blade section from rotating. The section rotation prevention mechanism may include an elongated groove on one side of each section and a corresponding guide rail on the opposite side of the adjacent section. The section rotation prevention mechanism may include a through hole in a nut through which a corresponding rod passes.

[0017] The sword may include a lighting device. The lighting device may include a bulb or LED located at the top of the hilt, thereby illuminating the outer portion of the blade section. The lighting device may include one or more flexible nuts, each including one or more lighting elements configured to illuminate the blade section, each blade section having an electrical conductor from a power source. The lighting device may include perforations in the section to allow light to pass through. The lighting device may include one or more lighting windows.

[0018] At least one nut may be made of a transparent or translucent material.

[0019] Therefore, the present invention provides a telescopic mechanism for extending a telescopic section, and in particular a telescopic section extension and retraction mechanism configured to extend and retract a section (i.e., a sleeve-shaped sequential section).

[0020] Telescopic mechanisms can be implemented in a variety of applications, such as: toy swords; recovery arms; indicators; tree branch saws; fishing rods; "selfie" camera poles; tripod legs; antennas; novelty items (such as extendable horns on hats); parking lot doors or other similar doors (opening / extending and retracting); telescopes and binoculars; vacuum cleaner tubes; microphone handles; tools such as screwdrivers, and so on.

[0021] For convenience, the extension / retraction mechanism will be described in conjunction with a toy sword having a telescopic blade (telescopic blade section); however, it should be understood that the mechanism can be implemented in the above applications with appropriate modifications. The terms "blade" and "section" and their derivatives including "blade section" are used interchangeably in the specification and claims.

[0022] A key feature of the telescopic mechanism in this application is that it includes a specially designed nut as part of the extension / retraction mechanism. The nut has a flexible and resilient threaded mechanism that allows a corresponding threaded spindle to engage with the nut's threaded mechanism with sufficient stiffness so that the nut is driven by the threaded spindle when the spindle rotates (e.g., when the sword is extended), but beyond a given (threshold) force, the flexible / resilient nut thread will slide on the thread of the spindle (e.g., when the extended sword is pressed into a rigid or semi-rigid body, such as a person, thus providing a safety feature).

[0023] In this regard, the flexible nut thread also allows each nut to re-engage with the spindle when the sword is folded (retracted), especially when folded suddenly, which may occur, for example, when the blade is pulled out (extended) and pushed (retracted / folded) by a person. Due to the flexibility of the toothed part, the opening defined by the toothed part (nut opening) can become larger, so that the nut can slide back on the threaded spindle (and then the toothed part can return to its original non-bent size).

[0024] The flexible nut also facilitates rapid retraction of the blade section and allows the section to move along the spindle because it is flexible and can adapt to various conditions during extension and retraction (i.e., if the nut is at a small angle or not fully centered). For example, during retraction, the flexible nut (especially its flexible thread) can quickly pass over the spindle.

[0025] A key feature of the telescopic mechanism in this application is that it includes extension stops for the blade sections (e.g., outward-facing step members and corresponding inward-facing shoulder members on adjacent sections). Thus, the sections are stopped after extending to their predetermined full range without requiring frictional stopping between the blade sections, a common feature in conical telescopic swords.

[0026] One potential advantage of this feature is that the telescopic section is not rigidly held in the extended position, so if the sword is pressed against a surface or object, the extended section will not provide a strong stabbing force and may even retract due to pressure. Therefore, the sword can include a striking automatic extension and retraction feature without excessive safety concerns. Furthermore, manual retraction or extension of the blade section will not damage the extension / retraction mechanism (due to its flexible / elastic properties), nor will it impair the extension / retraction mechanism due to retraction / folding of the blade section caused by excessive stabbing force.

[0027] Another specific feature of the invention is that, due to its construction, the blade (blade section) can be replaced with another blade (blade section). Attached Figure Description

[0028] The invention can be more clearly understood after reading the following detailed description of the non-limiting exemplary embodiments of the invention, with reference to the accompanying drawings, in which:

[0029] Figure 1 This is a perspective view of the telescopic component and its mechanism according to an embodiment of the present invention.

[0030] Figure 2 yes Figure 1 A sectional view.

[0031] Figure 3 is a perspective sectional view of the telescopic member and mechanism of the power supply according to an embodiment of the present invention.

[0032] Figure 4 and Figure 5This is a perspective view of the spindle and nut of the telescopic member and mechanism according to an embodiment of the present invention, including an enlarged view.

[0033] Figure 6 This is a perspective sectional view showing a telescopic member and mechanism in the extended position according to an embodiment of the present invention, including an enlarged view.

[0034] Figure 7 This is a perspective view of a segment rotation prevention mechanism according to an embodiment of the present invention.

[0035] Figure 8A- Figure 8D These are various views of the nuts of the telescopic member and mechanism according to embodiments of the present invention.

[0036] Figures 9A-9E This is a top view of various exemplary configurations of the nuts of the telescopic member and mechanism according to embodiments of the present invention.

[0037] Figure 10A and Figure 10B This is a side view of the telescopic component according to an embodiment of the present invention.

[0038] Figure 11 This is a top view of another exemplary construction of the nut of the telescopic member and mechanism according to an embodiment of the present invention.

[0039] Figure 12A and Figure 12B These are perspective and side views illustrating further exemplary embodiments of the present invention.

[0040] Figures 13A-13C This is an internal side view illustrating an exemplary segment extension limiting mechanism according to an embodiment of the present invention.

[0041] Figures 14A-14D These are various views illustrating exemplary embodiments of the lighting device of the present invention.

[0042] The following detailed description of embodiments of the present invention refers to the accompanying drawings. The dimensions of the components and features shown in the drawings are chosen for convenience or clarity of presentation and are not necessarily shown to scale. Where possible, the same reference numerals will be used throughout the drawings and in the following description to refer to the same and similar parts. Detailed Implementation

[0043] Identical, repeating, equivalent, or similar structures, elements, or parts appearing in more than one figure are generally labeled with the same reference numerals, optionally with one or more additional letters to indicate a particular object. The dimensions of parts and features shown in the figures are chosen for convenience or clarity and are not necessarily shown to scale or in true perspective. For clarity, some elements or structures may not be shown, or only partially shown, or shown in a different perspective or without perspective, and repeating, equivalent, or similar parts may not be labeled and / or described repeatedly.

[0044] The following description relates to one or more non-limiting examples of embodiments of the present invention. The invention is not limited to the described embodiments or drawings and can be practiced in various ways. Unless otherwise stated, the terminology used herein should not be construed as limiting.

[0045] The accompanying drawing illustrates a telescopic toy sword according to an embodiment of the present invention. (Refer to...) Figure 1 -Figure 3, Figure 10A and Figure 10B The sword includes: a hilt 10; a telescopic hollow blade 12—for example, having five hollow blade segments 12a, 12b, 12c, 12d, and 12e; and a telescopic mechanism 14 that affects the extension and retraction of the blade. The telescopic mechanism 14 includes a threaded bar or spindle 16 passing through the longitudinal axis of the blade 12; and a plurality of flexible / elastic nuts 18 (designated 18a, 18b, 18c, 18d, and 18e respectively—each nut engaging at the proximal portion of each hollow blade segment 12a-12e of the blade 12). Nuts 18a-18d have threads corresponding to the threads of the spindle, which will be described in more detail below. The dimensions of nuts 18a-18e, particularly their diameter / circumference, are set as a series of dimensions corresponding to the inner diameters of the sequentially sized blade segments 12a-12e. Figure 2 (and Figure 3). In the embodiment shown in the figure, segments 12a-12e are illustrated as cylindrical (with a circular outline / cross-section); however, they may be conical (slightly conical) or have a square or other outline, such as triangles, rectangles, ellipses, or polygons.

[0046] The telescopic mechanism 14 is actuated by a motor 20 (FIG. 3), which is powered by a power source 22, such as one or more batteries, and operated by one or more actuator buttons 24 (FIG. 3). Alternatively, the telescopic mechanism 14 may be mechanically driven, for example, by a spring mechanism (not shown). The main shaft 16 may be connected to the motor 20 via a coupling 26 (FIG. 3).

[0047] Figure 4 Figure 5 And Figure 8A- Figure 8DAn embodiment of one of the nuts 18 on the spindle 16 is shown, including an enlarged view, wherein the nut thread is constituted by a plurality of spindle-threaded engagement members such as inwardly projecting toothed members 28. The toothed members 28 are constructed as one or more combinations of materials, dimensions (length, thickness, and width), and end shapes such that the toothed members are sufficiently rigid or stiff that the nut 18 will move back and forth (up and down) on the spindle 16 (particularly the thread 30 of the spindle) as the spindle rotates, and wherein the toothed members are flexible and elastic such that if the end of the blade 12 is pushed into a distinctly rigid body (e.g., a person or a wall), the toothed members will slide on the thread of the spindle. The toothed members 28 are preferably arranged in a spiral staircase pattern. Figure 5 They can be set around the nut at different heights or levels, although they do not necessarily have to be arranged in this way.

[0048] Figure 5 Further shown, in a preferred embodiment, the spindle 16 has a nut / segment braking mechanism 32 (also known as a segment extension limiting mechanism), exemplified by a brake ring (but alternatively, it can be replaced by a brake component of an alternative design (e.g.) Figures 13A-13C (As shown in the diagram), or an L-shaped or finger-shaped arm (not shown), or an annular outer ring at the proximal end of the segment, etc.). In some embodiments, the aforementioned braking component or equivalent is mounted on the outside of the hilt 10 and configured to interact with the segments 12 such that the segments extend sequentially. The nut / segment braking mechanism 32 prevents each segment 12 from extending until the smaller segments in sequence are fully extended, at which point sufficient force is applied to pull the subsequent nut 18 to allow the subsequent nut to slide through the braking mechanism. However, alternatively, if the motor 20 provides sufficient thrust, the segments 12 may extend immediately due to their momentum.

[0049] Nuts 18a-18e can be attached to the corresponding proximal ends of blade sections 12a-12e in any suitable manner, including by welding, threaded connection, adhesive, or even integral molding into a single construction. Figure 1 An exemplary manner in which nuts 18a-18e are attached to blade sections 12a-12e is shown is by means of one or more section connecting elements 34, for example, one or more section connecting elements 34 being securely engaged by shoulder members 35 into corresponding spaced openings or cutouts 36 at the proximal ends of the respective blade sections.

[0050] exist Figure 5As can be seen most clearly in the enlarged view, in some embodiments, the nut 18 includes one or more nut-to-segment friction members 38, each having an elastic arm 40 with an outwardly facing shoulder 42 to provide limited but minimal frictional resistance to the segment 12, thereby preventing the segment from retracting spontaneously before it is needed. This resistance is preferably minimal, such that for safety reasons, such as when a sword is forcefully stabbed into a child's body, the segment 12 will retract at a force greater than a relatively low threshold force. Figure 6 An embodiment is shown in which the blade sections 12a-12e are cylindrical (i.e., have a circular cross-section). To prevent the sections 12 from separating from each other during extension, the sections 12a-12d may have blade section extension stops including an outward step 44 (e.g., annular) at their proximal ends; and the sections 12b-12e have corresponding inward shoulder members 46 at their distal ends (or vice versa).

[0051] The distal end of segment 12 may have a slightly smaller inner diameter than its proximal end, thereby creating limited but minimal friction between adjacent segments to more firmly hold the segments together. In some embodiments, the smaller inner diameter is progressive, gradually decreasing in size along the length of segment 12 toward the distal end.

[0052] Back Figure 1 The blade sections 12a-12e are cylindrical. In some embodiments, to help prevent the sections from rotating during motor 20 operation and consequently the spindle 16, the sections have a section rotation prevention mechanism 48, exemplified by an elongated groove 50 on one side of each section and a corresponding guide rail 52 on the other side of the adjacent section. The rotation prevention mechanism 48 prevents the sections from rotating as the spindle 16 rotates during extension and retraction. However, in some embodiments, the device does not include any section rotation prevention mechanism; instead, the nut 12 is moved back and forth by the rotation of the spindle 16 of the motor 20 relative to the section 12; or, the sections 12 are configured to have friction between adjacent sections to mitigate or even prevent rotation of the sections 12.

[0053] The segment rotation prevention mechanism 48 can be any suitable mechanism, and may include, for example, a track or ridge 54. Figure 7 (e.g., linear protrusions, channels, etc.) It should be noted that if segment 12 does not have a circular outline, segment rotation prevention mechanism 48 is not required.

[0054] Alternatively, the segment rotation prevention mechanism 48 may be constituted by a longitudinal bar (not shown) passing through the corresponding through holes 56 (FIG. 8A) of the nut 18, or otherwise prevent the nut from rotating.

[0055] It should be understood that the nut 18 can be configured to provide the same function by other mechanisms or components, such as a suitably constructed helical spring (not shown) that engages with the spindle 16 in a manner similar to the toothed part 28.

[0056] In response, Figures 9A-9D Several examples of possible alternative nut constructions are provided. Nut opening 61 indicates the position where the spindle 16 passes through the nut 18. Figure 9A An embodiment of a nut 18 is shown, having a flexible and resilient central annular element 60 (and acting in a manner similar to toothed element 28); in some embodiments, the disc is a partial disc (not shown). Figure 9B An embodiment of a nut 18 is shown having a flexible and elastic strip 62 that passes through or substantially through the center of the nut (the strip acts in a manner similar to the toothed member 28). Figure 9C An embodiment of a nut 18 is shown, having a flexible and elastic helical member 64 (which acts in a manner similar to a toothed member 28), in some embodiments of which the disc is a partially helical strip (not shown). Figure 9D An embodiment of a nut 18 is shown, which is constructed with a goblet-shaped elastic spindle-threaded engagement element 65 (which acts in a manner similar to toothed element 28). Figure 9E An embodiment of a nut 18 is shown, which has a resilient and generally upward-protruding petal-shaped protrusion 66 having a ridge 68 for engaging with a spindle thread 30 (the protrusion acts in a manner similar to a toothed member 28).

[0057] Alternatively, the spindle thread 30 is made of a flexible / elastic material, instead of the nut 18 (e.g., the toothed part 28) being made of a flexible / elastic material.

[0058] In some embodiments, the nut 18 allows light to pass through due to its opening and / or by being made of a transparent or translucent material. This takes into account the lighting characteristics.

[0059] Figure 10A and Figure 10B The corresponding side views show the sword in its fully retracted and fully extended positions.

[0060] In some embodiments (not shown), motor 20 automatically shuts off when the sword is fully extended; for example, a switch in a circuit containing the motor can turn off the motor when the last segment is extended. Similarly, in some embodiments, motor 20 automatically shuts off when the sword is fully retracted.

[0061] In some embodiments, the telescopic mechanism 14 is manually operated and therefore includes a manual power mechanism (not shown), such as a crank, thumbnail, winding device, etc.

[0062] It should be understood that the telescopic mechanism 14 can be used to extend and retract segments having any telescopic / interlocking profile shape, not only conical segments, but also cylindrical segments (i.e., having a circular profile), or segments having substantially square, rectangular, triangular, and polygonal profiles, etc.

[0063] Figure 11 A flexible / resilient nut 18 is shown, which also includes toothed side supports 70 to support and / or protect the toothed members 28; essentially acting as lateral stabilizers. The toothed side supports 70 are located between the toothed members (on the sides), and are exemplified by Y-shaped supports. The sides of each support 70 are preferably very close to the corresponding / opposite side of the toothed member 28. Such supports 70 can be useful in cases where the spindle 16 deviates from the center during use and may therefore potentially generate some lateral (lateral) forces and damage the toothed member 28. The side supports 70 limit or even prevent lateral movement of the toothed member 28.

[0064] Figures 12A-12B A segment retainer 72 in the form of a ring is shown. Figure 12A The toy sword may have a resilient ring, a snap-fit ​​ring, or a threaded ring, thus being configured to allow segment 12 to be attached to and removed from the hilt 10 for replacement. Figure 12A Optional lighting elements 74, such as one or more LEDs, are also shown, whose light can pass through one or more light openings or windows 76. Figure 12B )Illuminate outwards.

[0065] Figures 13A-13C The diagram shows a segment extension limiting mechanism 78 to prevent segment 12 from extending prematurely, i.e., to ensure that the segments extend sequentially, one segment at a time; nut / segment braking mechanism 32 ( Figure 5 Alternatives to ) . In Figure 13A In this configuration, the segment holding mechanism 78 includes one or more small friction elements 80 (which may be composed of annular friction elements) at the proximal inner end of the segment 12. However, it is understood that the segment extending most distally does not require (multiple) friction elements. The friction element 80 engages frictionally with the corresponding subsequent segment 12 and holds those segments with small / weak frictional force to ensure that each segment extends after the previous (earlier) segment has fully extended.

[0066] Figures 13B-13C An alternative segment extension limiting mechanism 78 is shown to prevent premature extension of segment 12. Figure 13BIn the middle section extension limiting mechanism 78, a limiting rod 84a is included, the proximal end 82 of which is attached to the hilt 10 and may include a weak biasing element or spring (not visible) biased to push the rod toward the proximal end (downward) of the sword. The distal end of the limiting rod 84a is configured and positioned to engage with the distal end of section 12 (although not necessarily the initially extended section). Thus, the limiting rod 84a provides a small / weak force on section 12 to ensure that each section extends after the previous (earlier) section has fully extended.

[0067] exist Figure 13C In the middle, the extension limiting mechanism 78 includes... Figure 13B The limiting rod is generally similar to the limiting rod 84b; however, the rod 84b includes a rotatable wheel 86 at its distal end. The rotatable wheel 86 can be configured to provide small / weak friction between the wheel and the rod 84b, thereby ensuring that each segment 12 extends after the previous (earlier) segment has fully extended. This wheel-to-rod friction can replace the biasing element or spring in the rod 84a.

[0068] Figures 14A-14D This demonstrates various lighting features that can be incorporated into a sword.

[0069] Figure 14A An external lighting device 88 (e.g., a ring of high-power bulbs or LEDs 90) is shown, which can be mounted on top of the hilt 10 to illuminate the exterior of the section 12. The section 12 may have slits, openings, or section windows 92 to reflect a dazzling light around the sword and create a halo around the blade.

[0070] Figure 14B An illumination device 88 is shown, including an opening or perforation 94 in segment 12 to allow light to shine through. The perforation 94 can be produced by a molding process during the production of segment 12, which is typically made of plastic material.

[0071] exist Figure 14C In the lighting device 88, one or more flexible nuts 18 have one or more lighting elements 96, such as nut bulbs or LEDs, that illuminate subsequent segments 12. Each segment 12 includes an electrical conductor 98. Figure 14D Strips of conductive coating or conductive metal are used to transmit power from power source 22. Therefore, in the extended position, the sword can emit a bright light.

[0072] Figure 14D Illumination elements 96 (e.g., a series of bulbs or LEDs) and electrical conductors 98 (of the illumination device 88) are shown arranged along each segment 12. The conductors may be arranged in elongated grooves 100. Thus, in the extended mode, the sword can emit a bright light.

[0073] Operation (using an electric sword): To automatically extend the blade 12 from the hilt 10, the user activates the motor 20 by pressing the extension actuator button 24, thereby rotating the spindle 16. Consequently, the first (smallest) nut 18a rises on the spindle to extend / push the first (smallest) segment 12a (positioned above the nut / segment braking mechanism 32). When segment 12a is fully extended, it pulls the next largest segment 12b (the outward-facing step 44 contacts the shoulder member 46), thereby pulling the next nut 18b through the braking mechanism 32, and nut 18b rises on the spindle 16 to extend segment 12b, and so on.

[0074] Depending on the specific design of the actuator, the blade 12 can be retracted by pressing another (retract) actuator button 24 or the same button, thereby causing the motor 20 to rotate the spindle 16 to pull back / retract the section 12.

[0075] It should be understood that the telescopic mechanism of this application can be used in a modified manner, i.e., as part of an existing segmented sword or other such telescopic component.

[0076] It should be understood that the above description is merely exemplary, and various embodiments of the present invention can be designed with appropriate modifications. The features described in the above embodiments and those not described herein can be used alone or in any suitable combination; and the present invention need not be designed according to the embodiments described above.

Claims

1. A telescopic mechanism, comprising: Multiple hollow telescopic blade segments (12), including at least one proximal blade segment (12e) and a distal blade segment (12a); A threaded spindle (16) has a spindle thread (30) and is disposed within the telescopic blade section (12); Multiple nuts (18) are configured to engage with the main shaft (16); as well as The power mechanism is configured to rotate the main shaft (16). Each of the nuts (18) respectively engages each of the hollow blade segments (12), and the nuts (18) have nut threads (62, 64, 65) corresponding to the spindle thread (30), and the nut threads (62, 64, 65) are suitably rigid so that when the spindle (16) rotates, the nuts (18) will move back and forth on the spindle thread (30), but the nut threads (62, 64, 65) are flexible and elastic, and the nut threads (62, 64, 65) are configured to elastically deform and allow controlled sliding through the spindle thread (30) if the distal telescopic blade segment (12a) is pushed into a suitably rigid body or object with a force exceeding a given threshold, so as to allow any protruding blade segment (12) to retract.

2. The mechanism according to claim 1, characterized in that, The nut threads (62, 64, 65) include toothed parts (28).

3. The mechanism according to claim 1, characterized in that, The nut (18) includes a toothed side support (70) disposed on the side of the toothed part (28).

4. The mechanism according to claim 1, characterized in that, The nut threads (62, 64, 65) are formed by upwardly extending petal-shaped protrusions (66) having ridges (68) for engaging with the spindle threads (30).

5. The mechanism according to claim 1, characterized in that, The nut threads (62, 64, 65) include a flexible and elastic central annular element (60).

6. The mechanism according to claim 1, characterized in that, The main shaft (16) includes a segment extension limiting mechanism to prevent the blade segments (12) from separating from each other.

7. The mechanism according to claim 1, characterized in that, The sword includes a segment retainer (72).

8. The mechanism according to claim 1, characterized in that, The power mechanism includes a motor (20) and a power source (22).

9. The mechanism according to claim 1, characterized in that, The power mechanism includes a manual power mechanism.

10. The mechanism according to claim 1, wherein, The blade section (12) has a section rotation prevention mechanism (48) to prevent the blade section (12) from rotating.

11. The mechanism according to claim 1, characterized in that, The sword includes a lighting device (88).

12. The mechanism according to claim 11, characterized in that, The lighting device (88) includes a bulb located at the top of the hilt (10) of the sword, thereby illuminating the outer portion of the blade section (12).

13. The mechanism according to claim 11, characterized in that, The lighting device (88) includes one or more flexible nuts (18), each of which includes one or more lighting elements (96) configured to illuminate the blade section (12), each blade section (12) having an electrical conductor (98) from a power source (22).

14. The mechanism according to claim 11, characterized in that, The lighting device (88) includes a perforation (94) in the blade section (12) to allow light to pass through.

15. The mechanism according to claim 11, characterized in that, The lighting device (88) includes one or more lighting windows (76, 92).

16. The mechanism according to claim 1, characterized in that, At least one of the nuts (18) is made of a transparent or translucent material.

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