Wire collecting mechanism and lamp

Abstract

A take-up mechanism includes a housing (H), an inner cylinder (600) and a wire (900). The housing (H) has an inner space (S) formed therein, and an inner thread structure (810) formed on an inner surface of the housing (H); the inner cylinder (600) is arranged in the inner space (S); the inner cylinder (600) defines a central axis (A), and an outer thread structure (610) is formed on an outer surface of the inner cylinder (600), the outer thread structure (610) is matched with the inner thread structure (810), and the inner cylinder (600) is rotatable relative to the housing (H) and is displaced along the central axis (A); the outer thread structure (610) includes at least two contact portions (613) and at least two non-contact portions (614), and a gap (G) is formed between the non-contact portions (614) of the outer thread structure (610) and the inner thread structure (810). One end of the wire (900) is connected to the inner cylinder (600) and is wound around the outer thread structure (610) of the inner cylinder (600), and as the inner cylinder (600) is displaced along the central axis (A) in a rotatable manner relative to the housing (H), a part of the wire (900) can be wound around or unwound from the outer thread structure (610) of the inner cylinder (600).

Description

Technical Field

[0001] This invention relates to a cable winding mechanism and a lamp, and more particularly to a cable winding mechanism that facilitates size reduction and improves the smoothness of cable winding and unwinding, and a lamp incorporating the same cable winding mechanism. Background Technology

[0002] A winding mechanism is a device used to wind up or release wires. It can adjust the exposed length of the wire and can be applied to everyday items to meet modern people's requirements for functionality or their pursuit of personalized lifestyles.

[0003] Taking a suspended light fixture as an example, a suspended light fixture includes a suspension line and a light body. One end of the suspension line is connected to the ceiling and the other end is connected to the light body. Depending on the installation space of the suspended light fixture and the configuration of the surrounding decorations, changing the hanging length of the suspension line can create different spatial senses and design senses. If a winding mechanism is applied to a suspended light fixture, it is beneficial to adapt and adjust the hanging length of the suspension line according to the user's needs.

[0004] However, currently available lighting fixtures with adjustable suspension wire lengths do not have suspension wires wound along a fixed track, requiring a larger space for wire winding. Alternatively, even if the suspension wire is wound along a fixed track, the mechanism makes it easy for the wire to get stuck during winding and unwinding, resulting in unsmooth wire winding and unwinding. Summary of the Invention

[0005] The purpose of this invention is to provide a winding mechanism and a lamp to solve the above-mentioned problems.

[0006] According to one embodiment of the present invention, a take-up mechanism is provided, comprising a housing, an inner cylinder, and a wire. The housing has an accommodating space inside, and an internal thread structure is formed on its inner surface. The inner cylinder is disposed within the accommodating space. The inner cylinder defines a central axis. The outer surface of the inner cylinder has an external thread structure, which mates with the internal thread structure, allowing the inner cylinder to be displaced along the central axis in a rotatable manner relative to the housing. The external thread structure includes at least two contact portions and at least two non-contact portions, with a gap formed between the non-contact portions of the external thread structure and the internal thread structure. One end of the wire is connected to the inner cylinder and wound along the external thread structure of the inner cylinder. As the inner cylinder rotates relative to the housing and displaces along the central axis, a portion of the wire can be wound around or detached from the external thread structure of the inner cylinder.

[0007] According to another embodiment of the present invention, a lamp is provided, comprising the aforementioned winding mechanism and lamp body, wherein the winding mechanism is suspended on an external support and the lamp body is connected to the other end of the wire.

[0008] Compared to prior art, the winding mechanism of this invention utilizes the rotation of the inner cylinder relative to the outer shell along a central axis, causing a portion of the wire to wrap around or detach from the outer thread structure of the inner cylinder. This allows the wire to wind along a fixed track, simplifying the winding space and reducing the size of the winding mechanism. Furthermore, the winding mechanism of this invention, by creating a gap between the non-contact portion of the outer thread structure and the inner thread structure, reduces friction between the two threads, thereby improving the smoothness of wire winding and unwinding. This winding mechanism can be applied to lighting fixtures, allowing users to adjust the hanging length of the fixture according to their needs. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of a take-up mechanism according to an embodiment of the present invention.

[0010] Figure 2 yes Figure 1 An exploded view of the take-up mechanism.

[0011] Figure 3 yes Figure 2 Another exploded schematic diagram of the first shell, inner cylinder and second shell.

[0012] Figure 4 yes Figure 1 A cross-sectional schematic diagram of the take-up mechanism.

[0013] Figure 5 yes Figure 1 Another cross-sectional view of the take-up mechanism.

[0014] Figure 6 yes Figure 1 A bottom view of the inner cylinder of the take-up mechanism.

[0015] Figure 7 yes Figure 1 A schematic diagram of the projection of the external thread structure of the inner cylinder of the take-up mechanism and the internal thread structure of the outer shell onto a plane perpendicular to the central axis.

[0016] Figure 8 This is a schematic projection of the external thread structure of the inner cylinder and the internal thread structure of the outer shell according to another embodiment of the present invention onto a plane perpendicular to the central axis.

[0017] Figure 9 This is a three-dimensional schematic diagram of the inner cylinder according to another embodiment of the present invention.

[0018] Figure 10 yes Figure 1 A schematic diagram of the winding mechanism applied to lighting fixtures.

[0019] Figure 11 yes Figure 10 The diagram shows the relationship between friction and force when the lamp is in a relatively high position.

[0020] Figure 12 yes Figure 10 The diagram shows the relationship between friction and force when the lamp is in a relatively low position. Detailed Implementation

[0021] The foregoing and other technical contents, features, and effects of the present invention will be clearly presented in the following detailed description of the preferred embodiments with reference to the accompanying drawings. The directional terms used in the following embodiments, such as up, down, left, right, front, back, bottom, and top, are merely for reference to the accompanying drawings. Therefore, the directional terms used are for illustrative purposes and not for limiting the present invention. Furthermore, in the following embodiments, the same or similar components will be referred to by the same or similar reference numerals.

[0022] Please refer to Figures 1 to 5 , Figure 1 This is a schematic diagram of the winding mechanism 10 according to an embodiment of the present invention. Figure 2 yes Figure 1 An exploded schematic diagram of the take-up mechanism 10. Figure 3 yes Figure 2 Another exploded schematic diagram of the first shell 300, the inner cylinder 600, and the second shell 800. Figure 4 yes Figure 1 A cross-sectional schematic diagram of the take-up mechanism 10. Figure 5 yes Figure 1 Another cross-sectional view of the take-up mechanism 10. The take-up mechanism 10 includes a housing H, an inner cylinder 600, and a wire 900. The housing H may include a first housing 300 and a second housing 800, which are connected by a slot 310 and a protrusion 840. Figure 3 The housing 900 and the outer casing 800 are interlocked. The interior of the outer casing H forms an accommodating space S, and the inner surface of the outer casing H has an internal thread structure 810. Here, it is exemplified that the internal thread structure 810 is formed on the inner surface of the second casing 800. The first casing 300 can be fixed to an external support, such as a ceiling, and the relative position of the first casing 300 and the external support remains fixed. The outer casing H may further include a guide structure 830, here exemplified that the guide structure 830 is formed on the second casing 800. The wire 900 enters or exits the accommodating space S through the guide structure 830. The guide structure 830 may include a groove 831 and a lug 832. The groove 831 is formed on the outer surface of the outer casing H, and the lug 832 extends to the bottom end B of the outer casing H. The lug 832 has a through hole 833 through which the wire 900 passes.

[0023] The inner cylinder 600 is disposed in the accommodating space S. The inner cylinder 600 defines a central axis A. An external thread structure 610 is formed on the outer surface of the inner cylinder 600. The external thread structure 610 mates with the internal thread structure 810, allowing the inner cylinder 600 to be displaced along the central axis A in a manner rotatable relative to the outer shell H. Figure 2 As shown, the external thread structure 610 includes multiple turns of threaded teeth 611 and multiple turns of threaded grooves 612. The threaded teeth 611 and threaded grooves 612 are staggered, that is, a threaded groove 612 is provided between two adjacent threaded teeth 611. Figure 4 As shown, the threaded groove 612 may have an arc-shaped bottom surface 615. This improves the smoothness of wire winding and unwinding 900. (See reference) Figure 6 , it is Figure 1 A bottom view of the inner cylinder 600 of the take-up mechanism 10 shows that the external thread structure 610 includes at least two contact portions 613 and at least two non-contact portions 614. In this embodiment, each turn of the thread 611 of the external thread structure 610 includes three contact portions 613 and three non-contact portions 614. The contact portions 613 and non-contact portions 614 of each turn of the thread 611 are staggered, and the three contact portions 613 of each turn of the thread 611 are spaced at equal angles relative to the central axis A. Different turns of the thread 611 are aligned with each other along the central axis A. Specifically, the contact portion 613 of the next turn of the thread 611 is aligned with the contact portion 613 of the previous turn of the thread 611 along the central axis A, so that the projections of multiple turns of the thread 611 onto a plane perpendicular to the central axis A overlap. (See reference) Figure 7 , it is Figure 1 The diagram shows the projection of the external thread structure 610 of the inner cylinder 600 of the take-up mechanism 10 and the internal thread structure 810 of the outer shell H onto a plane perpendicular to the central axis A. The projection of the internal thread structure 810 onto the plane perpendicular to the central axis A is M1 (hereinafter referred to as projection M1), and projection M1 is circular. The projection of the external thread structure 610 onto the plane perpendicular to the central axis A is M2 (hereinafter referred to as projection M2), and projection M2 is an equilateral triangle. The projection of the contact portion 613 onto the plane perpendicular to the central axis A is C (hereinafter referred to as projection C), and projection C abuts against or is adjacent to projection M1. The projection of the non-contact portion 614 onto the plane perpendicular to the central axis A is D (hereinafter referred to as projection D), and projection D is located inside projection M1. Thus, a gap G is formed between the non-contact portion 614 of the external thread structure 610 and the internal thread structure 810 (see...). Figure 4This reduces the resistance when the inner cylinder 600 rotates relative to the outer shell H, thereby improving the smoothness of winding and unwinding the cable 900. The aforementioned projection M2 being an equilateral triangle includes both cases where the shape of the projection M2 is an equilateral triangle and cases where it is substantially an equilateral triangle. In this embodiment, since the projection D of the non-contact portion 614 is an arc rather than a straight line, the shape of the projection M2 is approximately an equilateral triangle, i.e., the aforementioned case where it is substantially an equilateral triangle. In other embodiments, when the projection D of the non-contact portion 614 is a straight line, the shape of the projection M2 can be an equilateral triangle.

[0024] In this embodiment, each turn of the external thread structure 610 contains three contact portions 613 and three non-contact portions 614, and the projection M2 of the external thread structure 610 onto a plane perpendicular to the central axis A is an equilateral triangle, as an example. However, the present invention is not limited thereto. In other embodiments, the number of contact portions 613 and non-contact portions 614 of the external thread structure 610 can be adjusted accordingly. As long as the external thread structure 610 contains at least two contact portions 613 and at least two non-contact portions 614, the effects of reducing friction between the inner cylinder 600 and the outer shell H and improving the smoothness of wire winding and unwinding 900 can be achieved. Depending on the number and arrangement of the contact portions 613 and non-contact portions 614 of the external thread structure 610, the projection M2 of the external thread structure 610 onto a plane perpendicular to the central axis A can be non-circular, such as elliptical, polygonal, or regular polygonal. In this embodiment, the at least two contact portions 613 and the at least two non-contact portions 614 are all located in the same turn of the thread 611. However, the present invention is not limited thereto. In other embodiments, the threads 611 of the same turn have at least one contact portion 613 and at least one non-contact portion 614, wherein the at least two contact portions 613 are located in different turns of the threads 611. For details, please refer to [reference needed]. Figure 8 Related explanations.

[0025] As shown in Figures 4 and 5, the first end 910 of the wire 900 is connected to the inner cylinder 600 and wound along the external thread structure 610 of the inner cylinder 600. As the inner cylinder 600 rotates relative to the outer casing H along the central axis A, a portion of the wire 900 can wind around or unwind from the external thread structure 610 of the inner cylinder 600. Specifically, as the inner cylinder 600 moves along the central axis A from the bottom end B of the outer casing H to the top end T of the outer casing H, i.e., the take-up mechanism 10... Figure 4 become Figure 5 In this state, a portion of the wire 900 can be wound around the external thread structure 610 of the inner cylinder 600, thus shortening the length of the wire 900 exposed outside the outer casing H. As the inner cylinder 600 moves along the central axis A from the top T to the bottom B of the outer casing H, that is, as the winding mechanism 10 moves from... Figure 5 become Figure 4In this state, a part of the wire 900 can disengage from the external thread structure 610 of the inner cylinder 600, causing the length of the wire 900 exposed outside the housing H to increase. Thereby, the wire 900 is wound along a fixed track, which is beneficial to streamlining the wire storage space and reducing the volume of the wire storage mechanism 10.

[0026] As shown in FIGS. 2, 4, and 5, the wire storage mechanism 10 may further include a power elastic member 700 for providing the kinetic energy for the inner cylinder 600 to rotate relative to the housing H. The power elastic member 700 is disposed in the accommodation space S. A central column 820 is formed at the bottom end B of the housing H. Here, taking the central column 820 formed on the second housing 800 as an example. The first end 710 (see Figure 2 ) of the power elastic member 700 is connected to the central column 820 of the housing H, and the second end 720 (see Figure 4 ) of the power elastic member 700 is connected to the inner cylinder 600. As shown in Figure 3 , at least one groove 821 is formed on the central column 820, and a groove 620 is formed on the inner surface of the inner cylinder 600. The first end 710 and the second end of the power elastic member 700 are respectively fixed in the grooves 821 and 620. Thereby, when the inner cylinder 600 is displaced along the central axis A relative to the central column 820, the power elastic member 700 can be deformed to accumulate elastic restoring force, and this elastic restoring force can provide the kinetic energy for the inner cylinder 600 to rotate relative to the housing H.

[0027] The power elastic member 700 can be a flat wound spring, and the flat wound spring has the freedom of bidirectional extension. For example, Figure 4 the power elastic member 700 in Figure 5 is in a slightly downward extended state,

[0028] Figure 4 the power elastic member 700 in

[0029] Please refer to Figure 1 and Figure 2 and Figure 4The winding mechanism 10 may optionally include a bracket 200, and the first housing 300 of the outer casing H can be fixed to an external support via the bracket 200. When the winding mechanism 10 is applied to a device requiring power, such as a lamp, the winding mechanism 10 may optionally include a distribution box 100, a drive unit 400, and a telescopic conductive assembly 500, and the wire 900 can be configured as a conductor. The distribution box 100 can be used to house the power cord and related electronic components. The drive unit 400 can be used to convert AC mains power into DC power and then supply power to the winding mechanism 10 via the conductor. The telescopic conductive assembly 500 is electrically connected to the wire 900 to form the internal conductor of the winding mechanism 10. One end of the internal conductor can be connected to a power source, and the other end can be connected to a power-consuming unit. Taking a lamp as an example, one end of the internal conductor can be connected to AC mains power, and the other end can be connected to the lamp body.

[0030] A telescopic conductive assembly 500 is disposed in the accommodating space S. One end of the telescopic conductive assembly 500 abuts against the top T of the outer shell H, and the other end abuts against the inner cylinder 600, as shown in Figures 4 and 5. When the inner cylinder 600 displaces along the central axis A, the length of the telescopic conductive assembly 500 parallel to the central axis A extends or shortens. Figure 2 , Figure 4 , Figure 5 As shown, the telescopic conductive assembly 500 may include an outer conductive elastic element 510, an inner conductive elastic element 520, a first conductive part 530, a second conductive part 540, a third conductive part 550, and a fourth conductive part 560, wherein the first conductive part 530 and the second conductive part 540 are disposed in the first housing 300 and respectively disposed in the partition wall 320 (see...). Figure 4 The inner and outer sides of the inner cylinder 600. The third conductive part 550 and the fourth conductive part 560 are disposed in the inner cylinder 600 and respectively disposed in the partition wall 630 (see...). Figure 4 The inner and outer sides of the partition walls 320 and 630. An inner conductive elastic element 520 is disposed on the inner side of the partition walls 320 and 630, with its two ends abutting against the first conductive part 530 and the third conductive part 550 respectively, in a manner rotatable relative to them. An outer conductive elastic element 510 is disposed on the outer side of the partition walls 320 and 630, with its two ends abutting against the second conductive part 540 and the fourth conductive part 560 respectively, in a manner rotatable relative to them. Thus, when the inner cylinder 600 displaces along the central axis A, for example, when the take-up mechanism 10 moves from... Figure 4 become Figure 5 In this state, the length of the telescopic conductive assembly 500 parallel to the central axis A shortens without twisting or winding. For example, when the take-up mechanism 10... Figure 5 become Figure 4In this state, the telescopic conductive assembly 500 extends parallel to the central axis A without twisting or winding. Since the telescopic conductive assembly 500 does not twist or wind when shortening or extending, there is no need to reserve space for twisting or winding, which helps reduce the volume of the take-up mechanism 10. Furthermore, the dynamic elastic member 700 and the telescopic conductive assembly 500 share the accommodating space S as the deformation space, eliminating the need for separate spaces for the dynamic elastic member 700 and the telescopic conductive assembly 500 in the take-up mechanism 10, further reducing its volume.

[0031] Please refer to Figure 8 This is a schematic projection of the external thread structure of the inner cylinder and the internal thread structure 810 of the outer shell H onto a plane perpendicular to the central axis, according to another embodiment of the present invention. In this embodiment, the outer shell H is the same as the outer shell H of the above embodiment. The main difference between the inner cylinder and the inner cylinder 600 of the above embodiment is that the external thread structure of the inner cylinder includes at least four threads. When the number of threads in the external thread structure is greater than four, the fifth thread has the same configuration as the first thread, the sixth thread has the same configuration as the second thread, and so on. Therefore, the projections of the fifth thread and the first thread onto the plane perpendicular to the central axis A overlap, and the projections of the sixth thread and the second thread onto the plane perpendicular to the central axis A overlap. That is, the projection of the external thread structure onto the plane perpendicular to the central axis A is formed by the projections of four threads. Furthermore, the threads in the same thread have contact portions and non-contact portions, and the multiple contact portions of the external thread structure are located in threads in different threads. Figure 8 In the diagram, the projection of the internal thread structure 810 onto a plane perpendicular to the central axis A is M1 (hereinafter referred to as projection M1). Projection M1 is circular. The projections of the four threads onto the plane perpendicular to the central axis A are m1, m2, m3, and m4 (hereinafter referred to as projections m1, m2, m3, and m4). To improve recognizability, Figure 8 The projections m1, m2, m3, and m4 are drawn using different line styles. All projections m1, m2, m3, and m4 are non-circular. The projections of the contact portions of the four threads onto a plane perpendicular to the central axis A are C1, C2, C3, and C4 (hereinafter referred to as projections C1, C2, C3, and C4). Thus, the projection of the external thread structure onto the plane perpendicular to the central axis A is a regular quadrilateral, which is essentially a regular quadrilateral in this case, with projections C1, C2, C3, and C4 located at the vertices of the regular quadrilateral.

[0032] Please refer to Figure 9 This is a perspective view of an inner cylinder 600a according to another embodiment of the present invention. An external thread structure 610a is formed on the outer surface of the inner cylinder 600a. The external thread structure 610a includes multiple turns of thread 611a. The main difference between the inner cylinder 600a and the inner cylinder 600 described above is the arrangement of the multiple turns of thread 611a. Figure 9In this design, different turns of the thread 611a are staggered along the central axis A, causing the projection of the multi-turn thread 611a onto a plane perpendicular to the central axis A to have an angular variation. More specifically, the contact portion 613a of the next turn of the thread 611a deviates from the contact portion 613a of the previous turn of the thread 611a relative to the central axis A by a predetermined angle, so that the connection E1 of the contact portions 613a of the multi-turn thread 611a is not parallel to the central axis A. This ensures balanced multi-point contact between the inner cylinder 600a and the outer shell H, avoiding problems such as increased friction and difficulty in rotation caused by eccentricity due to manufacturing tolerances. Preferably, the angle of the contact portion 613a of the multi-turn thread 611a relative to the central axis A can be configured to gradually change, so that the projection of the external thread structure 610a onto a plane perpendicular to the central axis A is circular. Therefore, when the inner cylinder 600a rotates relative to the outer shell H, the contact between the external thread structure 610a and the internal thread structure 810 becomes more continuous, which can further improve the smoothness of winding and unwinding the wire 900.

[0033] Please refer to Figure 10 It is about Figure 1 The diagram illustrates the application of the cable retraction mechanism 10 to the lamp fixture 1. The lamp body 20 on the left is in a relatively high position, allowing the user to extend the exposed length of the cable 900. The lamp body 20 on the right is in a relatively low position, allowing the user to shorten the exposed length of the cable 900. The lamp fixture 1 includes the cable retraction mechanism 10 and the lamp body 20. The cable retraction mechanism 10 is suspended from an external support N, and the lamp body 20 is connected to the second end 920 of the cable 900. Here, the external support N is taken as a ceiling. The distribution box 100 is located above the external support N. The first housing 300 of the cable retraction mechanism 10 is fixed below the external support N via a bracket 200. The cable 900 is a conductor, electrically connected to the telescopic conductive assembly 500. Details regarding the cable retraction mechanism 10 can be found above and will not be repeated here.

[0034] Regarding how the dynamic elastic element 700 provides the kinetic energy for the inner cylinder 600 to rotate relative to the outer shell H, in 10 to Figure 12 The following is an example of the winding mechanism 10 being applied to a lamp 1. For ease of explanation, the following description uses an XY coordinate system. Furthermore, when the direction described below is "downward" or "downward," it refers to downward or downward parallel to the Y-axis; when the direction is described as "upward" or "upward," it refers to upward or upward parallel to the Y-axis. In detail, regardless of the position of the lamp body 20... Figure 10 Left side (can be matched) Figure 5 The relatively high state of ) or such Figure 10 Right side (can correspond) Figure 4 In a relatively low position, the sum of the gravity FW of the lamp body 20 and the elastic restoring force FS generated by the contraction or stretching deformation of the dynamic elastic element 700 is not greater than the maximum static friction force fs1 and fs2 of the winding mechanism 10 (see...). Figure 11 , Figure 12 In this embodiment, the dynamic elastic element 700 is exemplified as a spiral spring, which, when the lamp body 20 is in such a state... Figure 5 When the coil spring is in a relatively high position, its deformation is relatively small, and the force exerted by the coil spring on the inner cylinder 600 and the second housing 800 is relatively small; however, when the user moves the lamp body 20 from the... Figure 5 The relatively high state was pulled to such Figure 4 During the process of the relatively low position state, the deformation of the spiral spring gradually increases. When the wire 900 is stretched to its longest length, the spiral spring is in a state of relatively large deformation. At this time, the force exerted by the spiral spring on the inner cylinder 600 and the second shell 800 is relatively large. Therefore, based on the different deformation of the spiral spring, Figure 11 and Figure 12 The line graphs showing the relationship between friction and force are not the same.

[0035] Please refer to Figure 11 and Figure 12 The graph shows the relationship between friction and force. Specifically, the aforementioned force may include the resultant force of gravity FW, elastic restoring force FS, and a downward first external force F1 or an upward second external force F2. When the user does not apply any force, it indicates that the first external force F1 and the second external force F2 are 0. The aforementioned friction may include the friction between the inner cylinder 600 and the outer shell H, and the friction between the outer shell H (e.g., the guide structure 830) and the wire 900. That is, the aforementioned friction may be the resultant force of the friction between the inner cylinder 600 and the outer shell H and the friction between the outer shell H and the wire 900. The lamp 1 has static friction, a maximum static friction fs1 / fs2, and dynamic friction fk1 / fk2. Region P1 represents the inner cylinder 600 in a stationary state, region P2 represents the inner cylinder 600 in a rotating state, the friction value corresponding to the oblique line I is the static friction, the friction value corresponding to point J is the maximum static friction fs1 / fs2, and the friction value corresponding to the horizontal line K is the dynamic friction fk1 / fk2. The dynamic friction fk1 / fk2 is less than the maximum static friction fs1 / fs2 and is a constant value. As mentioned earlier, when the spiral spring is in its maximum deformation state, even if the spiral spring tries to return to its free state, the relative force exerted by the spiral spring on the inner cylinder 600 and the second shell 800 still cannot exceed the maximum static friction fs1 / fs2 corresponding to point J of the entire lamp 10.

[0036] Reference Figure 10 , Figure 11 The default elastic dynamic component 700, installed in the inner cylinder 600 and the second shell 800, already possesses pre-restoring force, such as... Figure 10 In the state on the left, when the user does not apply external force to the lamp 1, the inner cylinder 600 is stationary relative to the outer casing H. Figure 11In the process, the magnitude of the resultant force of the weight FW of the lamp body 20 and the elastic restoring force FS of the dynamic elastic element 700 is the first value V1. The frictional force corresponding to V1 is less than the maximum static friction force fs1 of the lamp 1. Here, according to the directionality of the force (here, downward is positive and upward is negative), the first value V1 is the absolute value of the weight FW of the lamp body 20 minus the elastic restoring force FS. Therefore, the lamp body 20 remains stationary at any height.

[0037] When the user wants to adjust the hanging length of lamp 1, for example, to make lamp 1 hang from... Figure 10 The relatively high position on the left changes to the relatively low position on the right. The user can manually pull the lamp body 20 down, and by applying external force to the cable winding mechanism 10 through the lamp body 20, the cable winding mechanism 10 can be adjusted from its original position. Figure 5 Become Figure 4 The state. For example... Figure 10 In the state on the left, when the first external force F1 is applied downward to the take-up mechanism 10, the corresponding... Figure 11 In the process, the magnitude of the resultant force of the first external force F1, the gravity FW of the lamp body 20, and the elastic restoring force FS of the dynamic elastic element 700 is the second value V2. The frictional force corresponding to V2 has exceeded the maximum static friction force fs1 of the lamp 1, causing the inner cylinder 600 to rotate relative to the outer shell H, from a static state to a rotating state, until the first external force F1 is removed, causing the inner cylinder 600 to stop rotating relative to the outer shell H (i.e., the second value V2 decreases to the first value V1). In the rotating state, according to the directionality of the force (here, downward is positive and upward is negative), the second value V2 is the sum of the first external force F1 and the gravity FW of the lamp body 20 minus the absolute value of the elastic restoring force FS of the dynamic elastic element 700. During the action of the first external force F1, the inner cylinder 600 displaces along the central axis A from the top T of the outer shell H to the bottom B of the outer shell H. A portion of the wire 900 can detach from the external thread structure 610 of the inner cylinder 600, thus increasing the length of the wire 900 exposed outside the outer shell H, and causing the lamp 1 to... Figure 10 The high position on the left changes to the low position on the right, which corresponds to the winding mechanism 10 changing from... Figure 5 Become Figure 4 The state.

[0038] Reference Figure 10 , Figure 12 When the user wants to adjust the hanging length of lamp 1, for example, to make lamp 1 hang from... Figure 10 The relatively low position on the right changes to the relatively high position on the left. The user can manually push the lamp body 20 upwards, and through the lamp body 20, external force is applied to the winding mechanism 10, which can respond to the winding mechanism 10 changing from a relatively low position to a relatively high position. Figure 4 Become Figure 5 The state. For example... Figure 10 In the state on the right, when a second external force F2 is applied upward to the take-up mechanism 10, the corresponding... Figure 12 In the process, the magnitude of the resultant force of the second external force F2, the gravity FW of the lamp body 20, and the elastic restoring force FS of the dynamic elastic element 700 is the third value V3. The frictional force corresponding to it has exceeded the maximum static friction force fs2 of the lamp 1, causing the inner cylinder 600 to rotate relative to the outer shell H, from a static state to a rotating state, until the second external force F2 is removed, causing the inner cylinder 600 to stop rotating relative to the outer shell H (i.e., the third value V3 decreases to the first value V1 mentioned above). In the rotating state, according to the directionality of the force (here, upward is positive and downward is negative), the third value V3 is the sum of the second external force F2 and the elastic restoring force FS of the dynamic elastic element 700 minus the absolute value of the gravity FW of the lamp body 20. During the action of the second external force F2, the inner cylinder 600 is displaced along the central axis A from the bottom B of the outer shell H to the top T of the outer shell H. This allows a portion of the wire 900 to wrap around the external thread structure 610 of the inner cylinder 600, thereby shortening the length of the wire 900 exposed outside the outer shell H, and causing the lamp 1 to... Figure 10 The state on the right changes to the state on the left, which corresponds to the winding mechanism 10. Figure 4 Become Figure 5 The state.

[0039] Figure 11 , Figure 12 In the process, when an external force is applied to the take-up mechanism 10, the external force applied to the take-up mechanism 10 does not need to be maintained at a constant value. As long as an external force that can overcome the maximum static friction force fs1 / fs2 is provided at the beginning, such as the first external force F1 and the second external force F2, once the inner cylinder 600 starts to rotate, it can be changed to an external force that can at least overcome the dynamic friction force fk1 / fk2, so that the inner cylinder 600 can maintain the rotation state.

[0040] Furthermore, the coefficient of friction between the inner cylinder 600 and the outer shell H can be determined by selecting the materials; the elastic coefficient of the dynamic elastic element 700 can be determined by selecting the specifications; and the weight of the lamp body 20 can be determined by selecting the specifications. This allows for a proper arrangement of the elastic restoring force FS provided by the dynamic elastic element 700, the maximum frictional force fs1 / fs2 of the lamp 1, the dynamic frictional force fk1 / fk2, and the weight FW of the lamp body 20. This allows the user to apply a light force to the lamp body 20, which, together with the elastic restoring force FS provided by the dynamic elastic element 700 and the weight FW of the lamp body 20, overcomes the maximum static frictional force fs1 / fs2 of the lamp body 1. This causes the inner cylinder 600 to displace along the central axis A, thus extending and retracting the cable 900. Consequently, the lamp body 20 moves with the user's hand Q. When the user's hand Q leaves the lamp body 20, the lamp body 20 stops moving. This provides an operational experience where the lamp body 20 stops wherever the user's hand Q is, without requiring additional operation to freeze the lamp body 20. This improves the user's feel when operating the cable take-up mechanism 10 to take up and release the cable 900.

[0041] Compared to prior art, the winding mechanism of this invention utilizes the rotation of the inner cylinder relative to the outer shell along a central axis, causing a portion of the wire to wrap around or detach from the outer thread structure of the inner cylinder. This allows the wire to wind along a fixed track, simplifying the winding space and reducing the size of the winding mechanism. Furthermore, the winding mechanism of this invention, by creating a gap between the non-contact portion of the outer thread structure and the inner thread structure, reduces friction between the two threads, thereby improving the smoothness of wire winding and unwinding. This winding mechanism can be applied to lighting fixtures, allowing users to adjust the hanging length of the fixture according to their needs.

[0042] The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention should be included in the scope of the present invention.

[0043] [Symbol Explanation]

[0044] 1: Lighting fixtures

[0045] 10: Retracting Mechanism

[0046] 20: Lamp body

[0047] 100: Distribution box

[0048] 200: Bracket

[0049] 300: First shell

[0050] 310: Card slot

[0051] 320: Partition wall

[0052] 400: Drive components

[0053] 500: Telescopic Conductive Assembly

[0054] 510: External conductive elastic element

[0055] 520: Internal conductive elastic element

[0056] 530: First conductive part

[0057] 540: Second conductive part

[0058] 550: Third conductive part

[0059] 560: Fourth conductive part

[0060] 600,600a: Inner cylinder

[0061] 610, 610a: External thread structure

[0062] 611, 611a: Threaded

[0063] 612: Threaded groove

[0064] 613, 613a: Contact portion

[0065] 614: Non-contact department

[0066] 615: Curved bottom surface

[0067] 620: Trench

[0068] 630: Partition wall

[0069] 700: Dynamic elastic component

[0070] 710: First end

[0071] 720: Second End

[0072] 800: Second housing

[0073] 810: Internal thread structure

[0074] 820: Central Column

[0075] 821: Trench

[0076] 830: Guiding Structure

[0077] 831: Groove

[0078] 832: Protruding Ear

[0079] 833: Through hole

[0080] 840: Bump

[0081] 900: Wire

[0082] 910: First end

[0083] 920: Second End

[0084] A: Central axis

[0085] B: Bottom

[0086] E1: Online

[0087] F1: First External Force

[0088] F2: Second external force

[0089] G: Gap

[0090] H: Outer shell

[0091] I: slash

[0092] J: Point

[0093] K: Horizontal line

[0094] N: External support

[0095] P1, P2: Regions

[0096] Q:Hand

[0097] FS: Elastic recovery force

[0098] FW: Gravity

[0099] fs1, fs2: Maximum static friction force

[0100] fk1, fk2: kinetic friction force

[0101] S: Storage space

[0102] T: Top

[0103] L0: Free length of the dynamic elastic element parallel to the central axis

[0104] L1: Length of the inner cylinder parallel to the central axis

[0105] C, C1, C2, C3, C4: Projections of the contact portion onto a plane perpendicular to the central axis

[0106] D: Projection of the non-contact part onto a plane perpendicular to the central axis

[0107] M1: Projection of the internal thread structure onto a plane perpendicular to the central axis

[0108] M2: Projection of the external thread structure onto a plane perpendicular to the central axis

[0109] m1, m2, m3, m4: Projections of the threads onto a plane perpendicular to the central axis

[0110] V1: First value

[0111] V2: Second value

[0112] V3: The third value.

Claims

1. A wire take-up mechanism, comprising: The outer shell has an internal accommodating space, and the inner surface of the outer shell has an internal thread structure. An inner cylinder, disposed within the accommodating space, defines a central axis. An external thread structure is formed on the outer surface of the inner cylinder, which mates with the internal thread structure. The inner cylinder is rotatable relative to the outer shell and displaces along the central axis. The external thread structure includes at least two contact portions and at least two non-contact portions, with a gap formed between the non-contact portions of the external thread structure and the internal thread structure. A wire, one end of which is connected to the inner cylinder and wound along the external thread structure of the inner cylinder, wherein a portion of the wire is able to wind around or unwind from the external thread structure of the inner cylinder as the inner cylinder rotates relative to the outer shell and moves along the central axis. in, As the inner cylinder moves along the central axis from the bottom end to the top end of the outer shell, a portion of the wire is wound around the external thread structure of the inner cylinder and received within the accommodating space.

2. The take-up mechanism according to claim 1, wherein the external thread structure comprises multiple turns of thread, each turn of thread having at least one contact portion and at least one non-contact portion, and at least two of the contact portions being located on different turns of thread.

3. The take-up mechanism according to claim 1, wherein the external thread structure comprises multiple turns of thread, and at least two of the contact portions and at least two of the non-contact portions are located in the same turn of thread.

4. The take-up mechanism according to claim 1, wherein the projection of the external thread structure onto the plane perpendicular to the central axis is an ellipse or a regular polygon, and the projection of the internal thread structure onto the plane perpendicular to the central axis is a circle.

5. The take-up mechanism according to claim 1, wherein the external thread structure comprises multiple turns of thread, the projection of the multiple turns of thread onto a plane perpendicular to the central axis having an angular variation.

6. The take-up mechanism according to claim 1, wherein the external thread structure comprises multiple turns of thread, and a thread groove is provided between two adjacent threads, the thread groove having an arc-shaped bottom surface.

7. The take-up mechanism according to claim 1, wherein: As the inner cylinder moves along the central axis from the bottom end to the top end of the outer shell, a portion of the wire can be wound around the external thread structure of the inner cylinder, thereby shortening the length of the wire exposed outside the outer shell. As the inner cylinder moves along the central axis from the top to the bottom of the outer shell, a portion of the wire is able to disengage from the external thread structure of the inner cylinder, thereby increasing the length of the wire exposed outside the outer shell.

8. The take-up mechanism according to claim 1, wherein the outer casing comprises a first housing and a second housing, the first housing being fixed to an external support, the relative position of the first housing and the external support being fixed, and the internal thread structure being formed in the second housing.

9. The take-up mechanism according to claim 1, wherein the housing further includes a guide structure through which the wire enters or leaves the receiving space.

10. The take-up mechanism according to claim 9, wherein the guiding structure comprises: A groove is formed on the outer surface of the housing.

11. The take-up mechanism according to claim 9, wherein the guiding structure comprises: A lug extends from the bottom end of the housing and has a through hole through which the wire passes.

12. The take-up mechanism according to claim 1, further comprising: A dynamic elastic element is disposed in the accommodating space. A central column is formed at the bottom end of the outer shell. One end of the dynamic elastic element is connected to the central column of the outer shell, and the other end of the dynamic elastic element is connected to the inner cylinder. The dynamic elastic element is used to provide kinetic energy for the inner cylinder to rotate relative to the outer shell.

13. The take-up mechanism according to claim 12, wherein the dynamic elastic element is a planar coiled spring.

14. The take-up mechanism according to claim 12, wherein the free length of the dynamic elastic element parallel to the central axis is L0, and the length of the inner cylinder parallel to the central axis is L1, which satisfies the following conditions: L0 < L1.

15. A lighting fixture, comprising: The take-up mechanism as described in any one of claims 1 to 11 is suspended on an external support. as well as The lamp body is connected to the other end of the wire.

16. A lighting fixture, comprising: The take-up mechanism as described in any one of claims 12 to 14, wherein the take-up mechanism is suspended on an external support; and The lamp body is connected to the other end of the wire.

17. The luminaire according to claim 16, wherein, The lamp has dynamic friction and maximum static friction, and the lamp body has gravity. When the inner cylinder is stationary relative to the outer shell, the magnitude of the resultant force of the weight of the lamp body and the elastic restoring force of the dynamic elastic element is a first value, and the corresponding frictional force is less than the maximum static frictional force of the lamp. When a first external force is applied downward to the take-up mechanism, the magnitude of the resultant force of the first external force, the weight of the lamp body, and the elastic restoring force of the dynamic elastic element is a second value. The corresponding frictional force is greater than the maximum static frictional force of the lamp, causing the inner cylinder to rotate relative to the outer shell, moving from the stationary state to the rotating state, until the first external force is removed and the second value is reduced to the first value, causing the inner cylinder to stop rotating relative to the outer shell.

18. The luminaire according to claim 16, wherein, The lamp body has dynamic friction and maximum static friction, and the lamp body also has gravity. When the inner cylinder is stationary relative to the outer shell, the magnitude of the resultant force of the weight of the lamp body and the elastic restoring force of the dynamic elastic element is a first value, and the corresponding frictional force is less than the maximum static frictional force of the lamp. When a second external force is applied upward to the winding mechanism, the magnitude of the resultant force of the second external force, the weight of the lamp body, and the elastic restoring force of the dynamic elastic element is a third value. The corresponding frictional force is greater than the maximum static frictional force of the lamp, causing the inner cylinder to rotate relative to the outer shell, moving from the stationary state to the rotating state, until the second external force is removed and the third value is reduced to the first value, causing the inner cylinder to stop rotating relative to the outer shell.

19. The luminaire according to claim 17 or 18, wherein, The dynamic friction or the maximum static friction is the friction force between the inner cylinder and the outer shell and between the outer shell and the wire.

20. The luminaire according to claim 16, further comprising: A telescopic conductive assembly is disposed in the accommodating space, with one end of the telescopic conductive assembly abutting the top of the outer shell and the other end of the telescopic conductive assembly abutting the inner cylinder; in, As the inner cylinder displaces along the central axis, the length of the telescopic conductive assembly parallel to the central axis can be extended or shortened.

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