Wrapping wiring device and rotating mechanism

Abstract

The present invention relates to the field of cable installation, and particularly to a circumferential wiring device and a rotating mechanism. The circumferential wiring device includes a rotating component, a base, and a cable. The rotating component is rotatably connected to the base, and the maximum rotation angle of the rotating component is a set angle. The base includes a frustum portion, and the rotating component is located on one side of the top end of the frustum portion. The diameter of the top end of the frustum portion is smaller than the diameter of the bottom end of the frustum portion. One end of the cable is connected to the rotating component, and the other end is wound around the side surface of the frustum portion and connected to the bottom end of the frustum portion. While the structure is simple and easy to implement, it reduces or eliminates the interference generated in the detection of the optical system.

Description

Technical Field

[0001] The present invention belongs to the field of cable installation, and particularly relates to a circumferential wiring device and a rotating mechanism. Background Art

[0002] In various aerospace optical devices, in order to meet the need for large-range detection, one or more rotating mechanisms are often designed to achieve pointing in different directions. For multi-stage rotating mechanisms, such as periscope-type pointing structures, electrical components such as drive motors and sensors at the end need to transmit electrical signals to the distal base. Since the electrical components themselves rotate within a large range as the rotating mechanism rotates, it is required that the cable itself has a certain range of movement and a certain redundancy is left to meet the corner requirements.

[0003] The existing wiring schemes mainly include the following three: ① Single-wire layout, directly leading the power cable from the power source and then arranging it along the mechanism to the position of the corresponding component. This will result in a messy layout of the cable, which may interfere with the detection of the optical system. ② Telescopic layout, which requires the use of a telescopic power cable so that the power cable can freely expand and contract according to the movement of the structure at the end. In this way, when the cable is stretched, it needs to overcome the elastic potential energy to do work, inevitably introducing additional torque and affecting the rotation of the shaft system. ③ Rotating wiring device based on FFC (Flexible Flat Cable) / FPC (Flexible Printed Circuit), by virtue of the flexibility of the FFC / FPC flexible circuit, through designing a unique annular baffle outside the rotating mechanism, the flexible circuit bends and displaces between the inner wall surface and the outer wall surface of the annular baffle, thereby realizing the expansion and contraction of the cable. Due to the bending radius limitation of the flexible circuit, the designed annular baffle is often too large in size, which is not conducive to the light weight and miniaturization of the structure. Summary of the Invention

[0004] In view of this, the present invention aims to provide a circumferential wiring device and a rotating mechanism, which are simple in structure and easy to implement, while reducing or eliminating the interference to the detection of the optical system.

[0005] To achieve the above object, the technical solution of the present invention is realized as follows:

[0006] A circumferential wiring device, which includes:

[0007] A rotating component;

[0008] A base, the rotating component is rotatably connected to the base, and the maximum rotation angle of the rotating component is a set angle; the base includes a frustum portion, the rotating component is located on one side of the top of the frustum portion; the diameter of the top of the frustum portion is smaller than the diameter of the bottom of the frustum portion; and

[0009] A cable, one end of the cable is connected to a rotating component, and the other end is wound around the side surface of the frustum portion and connected to the bottom end of the frustum portion.

[0010] Further, the rotating component includes a main body portion and a connecting block. The connecting block is rotatably provided on the main body portion with the radial direction of the main body portion as the axis, and one end of the cable is connected to the connecting block.

[0011] Further, the base includes an upper end portion connected to the top end of the frustum portion. The upper end portion is provided with a groove portion and a window communicating with the groove portion. The groove portion is recessed downward from the surface of the upper end portion away from the frustum portion and extends along the circumferential direction of the upper end portion; one end of the cable passes through the window and is arranged along the groove portion and connected to the rotating component.

[0012] Further, one side edge of the window close to the center of the upper end portion abuts against the edge of the top end of the frustum portion.

[0013] Further, the base includes a lower end portion connected to the bottom end of the frustum portion. The lower end portion includes an upper surface, a side surface, and an arc surface connecting between the upper surface and the side surface. The arc surface is provided with a plurality of mounting through holes, and the plurality of mounting through holes are arranged at equal intervals along the circumferential direction of the lower end portion.

[0014] Further, the base further includes a rib plate structure provided on the side surface of the frustum portion. The rib plate structure is provided with a limiting groove. The limiting groove is recessed inward from one side of the rib plate structure close to the side surface of the frustum portion and extends along the inclined direction of the side surface of the frustum portion; the other end of the cable is wound around the side surface of the frustum portion and is limited between the limiting groove and the side surface of the frustum portion.

[0015] Further, the number of the rib plate structures is multiple, and the multiple rib plate structures are arranged at equal intervals along the circumferential direction of the frustum portion.

[0016] Further, the depth of the limiting groove is greater than the diameter of the cable; and / or

[0017] The length of the limiting groove is less than the length of the generatrix of the frustum portion.

[0018] Further, the calculation formula of the set angle is:

[0019]

[0020] Wherein, is the number of turns of the cable wound around the frustum portion, is the vertical height of the frustum portion, is the radius of the cable, is the included angle between the generatrix and the center line of the frustum portion, is the radius of the bottom end of the frustum portion.

[0021] A rotating mechanism includes the wrap-around wiring device as described above.

[0022] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0023] The wrap-around wiring device according to an embodiment of the present invention includes a rotating member, a base, and a cable. One end of the cable is connected to the rotating member, and the other end is wound around the side surface of the frustum portion and connected to the bottom end of the frustum portion. In this way, by means of the change in the diameter of the cross-section of the frustum portion in the direction from the bottom end to the top end of the frustum portion, when the rotating member rotates relative to the base, the adjustment of the extending length of the cable from the top end of the frustum portion can be realized. Its structure is simple and easy to implement, and the other end of the cable is wound around the side surface of the frustum portion, making the structure of the wrap-around wiring device more compact, realizing the orderly layout of the cable, and reducing or eliminating the interference generated by the detection of the optical system. At the same time, since a telescopic cable is not used, no additional torque is applied to the rotating end of the rotating mechanism. Description of the Drawings

[0024] The drawings forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0025] Figure 1 is a three-dimensional exploded view of the wrap-around wiring device according to an embodiment of the present invention;

[0026] Figure 2 is a schematic diagram of the wrap-around wiring device according to an embodiment of the present invention when the cable is in a contracted state;

[0027] Figure 3 is a schematic diagram of the wrap-around wiring device according to an embodiment of the present invention when the cable is in an extended state.

[0028] Description of the Reference Numerals:

[0029] 10, wrap-around wiring device; 11, rotating member; 12, base; 13, cable; 14, frustum portion; 15, main body portion; 16, connecting block; 17, upper end portion; 18, groove portion; 19, window; 20, lower end portion; 21, upper surface; 22, side surface; 23, arc surface; 24, mounting through hole; 25, rib structure; 26, limiting groove. Detailed Embodiments

[0030] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and do not constitute a limitation to the present invention. Similar elements in different embodiments are labeled with related similar element numbers. In the following embodiments, many details are described to enable a better understanding of the present invention. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present invention are not shown or described in the specification to avoid the core part of the present invention being overwhelmed by excessive description. For those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0031] It should be noted that, without conflict, the embodiments and features in the embodiments of the present invention can be combined with each other to form various embodiments. At the same time, the steps or actions in the method description can also be adjusted in the order that is obvious to those skilled in the art. Therefore, the various sequences in the specification and drawings are only for clearly describing a certain embodiment and do not mean that they are the necessary sequences, unless it is stated that a certain sequence must be followed.

[0032] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise stated, the meaning of "a plurality" is two or more.

[0033] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

[0034] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0035] See Figure 1 、 Figure 2 and Figure 3 As shown in

[0036] The rotating member 11 is rotatably connected to the base 12, and the maximum rotation angle of the rotating member 11 is a set angle. The base 12 includes a frustum portion 14, and the rotating member 11 is located on one side of the top end of the frustum portion 14. The diameter of the top end of the frustum portion 14 is smaller than the diameter of the bottom end of the frustum portion 14. Among them, in the direction from the bottom end to the top end of the frustum portion 14, the diameter of the cross-section of the frustum portion 14 gradually becomes smaller, so that the side surface of the frustum portion 14 is an inclined surface.

[0037] One end of the cable 13 is connected to the rotating member 11, and the other end is wound around the side surface of the frustum portion 14 and connected to the bottom end of the frustum portion 14.

[0038] The circumferential wiring device 10 of the embodiment of the present invention includes a rotating member 11, a base 12, and a cable 13. One end of the cable 13 is connected to the rotating member 11, and the other end is wound around the side surface of the frustum portion 14 and connected to the bottom end of the frustum portion 14. In this way, by means of the change in the diameter of the cross-section of the frustum portion 14 in the direction from the bottom end to the top end of the frustum portion 14, when the rotating member 11 rotates relative to the base 12, the adjustment of the extending length of the cable 13 from the top end of the frustum portion 14 can be realized. Its structure is simple and easy to implement, and the other end of the cable 13 is wound around the side surface of the frustum portion 14, making the structure of the circumferential wiring device 10 more compact, realizing the orderly layout of the cable 13, and reducing or eliminating the interference generated by the detection of the optical system. At the same time, since a telescopic cable 13 is not used, no additional torque is applied to the rotating end of the rotating mechanism.

[0039] In one embodiment, the rotating member 11 includes a main body portion 15 and a connecting block 16. The main body portion 15 is rotatably connected to the base 12. Among them, the main body portion 15 can be annular. The connecting block 16 is rotatably provided on the main body portion 15 with the radial direction of the main body portion 15 as the axis. The connecting block 16 can be provided on the side surface of the main body portion 15. The shape of the connecting block 16 can be cylindrical. One end of the cable 13 is connected to the connecting block 16. One end of the cable 13 can be connected to the connecting block 16 by bonding.

[0040] In one embodiment, the base 12 includes an upper end portion 17 connected to the top end of the frustum portion 14. The upper end portion 17 is provided with a groove portion 18 and a window 19 communicating with the groove portion 18. Among them, the window 19 penetrates the upper end portion 17 of the base 12. One end of the cable 13 can pass through the window 19 and enter the groove portion 18. The window 19 can be circular, square, oval or other shapes, and the present invention is not limited thereto. The groove portion 18 is recessed downward from the surface of the upper end portion 17 away from the frustum portion 14 and extends along the circumferential direction of the upper end portion 17. One end of the cable 13 passes through the window 19 and is arranged along the groove portion 18 and connected to the rotating member 11. Thus, when the rotating member 11 rotates relative to the base 12, the cable 13 can move in the groove portion 18 as the rotating member 11 rotates, realizing the adjustment of the extending length of the cable 13 from the window 19.

[0041] In one embodiment, one side edge of the window 19 close to the center of the upper end portion 17 abuts against the edge of the top end of the frustum portion 14. Thus, the cable 13 extending from the top end of the frustum portion 14 can directly pass through the window 19 and enter the groove portion 18.

[0042] In one embodiment, the base 12 includes a lower end portion 20 connected to the bottom end of the frustum portion 14. The lower end portion 20 includes an upper surface 21, a side surface 22, and an arc surface 23 connecting the upper surface 21 and the side surface 22. The arc surface 23 is provided with a plurality of mounting through holes 24. The arc surface 23 is provided with a plurality of mounting through holes 24, and the plurality of mounting through holes 24 are arranged at equal intervals along the circumferential direction of the lower end portion 20. Thus, a mounting member (such as a bolt) can pass through the mounting through holes 24 to fix the lower end portion 20 of the base 12 to an external structure, thereby fixing the base 12 to the external structure, where the external structure can be a fixed end of a rotating mechanism.

[0043] In one embodiment, the base 12 further includes a rib structure 25 provided on the side surface of the frustum portion 14. The top end of the rib structure 25 can be connected to the surface of the upper end portion 17 close to the frustum portion 14, and the bottom end of the rib structure 25 can be connected to the upper surface 21 of the lower end portion 20. The rib structure 25 is provided with a limiting groove 26, and the limiting groove 26 is recessed inward from one side of the rib structure 25 close to the side surface of the frustum portion 14 and extends along the inclination direction of the side surface of the frustum portion 14. In one embodiment, the depth of the limiting groove 26 is greater than the diameter of the cable 13. This is beneficial for the cable 13 to move along the inclination direction of the side surface of the frustum portion 14 within the limiting groove 26. In one embodiment, the length of the limiting groove 26 is less than the length of the generatrix of the frustum portion 14. The cable 13 is wound around the side surface of the frustum portion 14 and is limited between the limiting groove 26 and the side surface of the frustum portion 14. Thus, when the rotating member 11 rotates relative to the base 12, the limiting groove 26 can limit the movement direction of the cable 13, so that the cable 13 can move within a limited space and avoid interference.

[0044] In one embodiment, the number of the rib structures 25 is multiple, and the multiple rib structures 25 are arranged at equal intervals along the circumferential direction of the frustum portion 14. By providing multiple rib structures 25, the effect of restricting the movement direction of the cable 13 is better. One end of the cable 13 is connected to the connection block 16 of the rotating member 11, and the other end of the cable 13 is wound around the side surface of the frustum portion 14 and is connected to the upper surface 21 of the lower end portion 20. The portion of the cable 13 wound around the side surface of the frustum portion 14 is limited by the limiting groove 26 provided on the rib structure 25.

[0045] In one embodiment, the set angle is calculated by the formula:

[0046]

[0047] wherein, is the number of turns of the cable 13 wound around the frustum portion 14, is the vertical height of the frustum portion 14, is the radius of the cable 13, is the included angle between the generatrix and the center line of the frustum portion 14, is the radius of the bottom end of the frustum portion 14.

[0048] The set angle The derivation process of the calculation formula is as follows:

[0049]

[0050] wherein, is the maximum redundant length of the cable 13 extending out of the window 19, is the central circumference of the groove portion 18.

[0051] The central circumference of the groove portion 18 The calculation formula is:

[0052]

[0053] The maximum redundant length of the cable 13 extending out of the window 19 The calculation formula is:

[0054]

[0055] Wherein, is the radius of the top end of the frustum portion 14. The radius of the top end of the frustum portion 14 The calculation formula is: Thus, substituting the central circumference of the groove portion 18 and the maximum redundant length of the cable 13 extending out of the window 19 into the formula can obtain the calculation formula of the set angle .

[0056] For example, if the number of turns of the cable 13 around the frustum portion 14 , the radius of the cable 13 , the vertical height of the frustum portion 14 , the radius of the bottom end of the frustum portion 14 , and the included angle between the generatrix and the center line of the frustum portion 14 , can obtain . Thus, the maximum rotation angle of the rotating member 11 is about 247.98°. Among them, the dimensional parameters such as the number of turns of the cable 13 around the frustum portion 14, the radius of the cable 13, the vertical height of the frustum portion 14, the radius of the bottom end of the frustum portion 14, and the included angle between the generatrix and the center line of the frustum portion 14 involved in the present invention can be changed according to actual needs, and the material of the cable 13 can also be replaced according to actual needs.

[0057] See Figure 2 As shown, in this embodiment, when the rotating member 11 is in the absolute zero position, that is, when the rotating member 11 rotates relative to the base 12 to the limit position in the first direction, at this time, the cable 13 is in a contracted state, and the main length of the cable 13 is distributed at the bottom of the frustum portion 14 (i.e., the area near the bottom end of the frustum portion 14). Due to the toughness of the cable 13, it is subjected to a certain degree of compressive stress.

[0058] See Figure 3As shown, when the rotating member 11 rotates relative to the base 12 in the second direction, where the second direction is the opposite direction of the first direction. One end of the cable 13 connected to the connecting block 16 is subjected to a tensile stress, and this tensile stress is decomposed vectorially along the direction of the cable 13 (ignoring the friction between the cable 13 and the side surface of the frustum 14). It can be known that there is a component of the tensile stress along the axial direction of the base 12, so that the cable 13 generates a displacement in this direction. Due to the limitation of the limiting groove 26 on the rib plate structure 25, the cable 13 will fit against the side surface of the frustum 14 and move towards the top of the frustum 14. During the movement of the cable 13, since the cross-sectional diameter of the frustum 14 gradually decreases, and the number of turns of the cable 13 around the frustum 14 remains unchanged, the cable 13 will generate a redundant length. The redundant length will extend through the window 19 at the upper end portion 17 of the base 12 and be received in the groove portion 18. The rotating member 11 can rotate relative to the base 12 in the second direction to the limit position. At this time, the cable 13 is in the extended state.

[0059] Conversely, when the rotating member 11 rotates relative to the base 12 in the first direction from a position that is not the absolute zero position, the cable 13 is subjected to a compressive stress. The component of this compressive stress causes the cable 13 to fit against the side surface of the frustum 14 and move away from the top of the frustum 14. The redundant length of the cable 13 received in the groove portion 18 will move towards the frustum 14 through the window 19 to complete the winding and storage of the cable 13.

[0060] An embodiment of the present invention also provides a rotating mechanism, which includes a rotating end, a fixed end, and the wrap-around wiring device 10 as described above. Among them, the rotating end is connected to the rotating member 11, and the fixed end is connected to the base 12. One end of the cable 13 is connected to the rotating member 11 and can extend to the rotating end and be electrically connected to the rotating end. The other end of the cable 13 is wound around the side surface of the frustum 14, connected to the bottom end of the frustum 14, and can extend to the fixed end and be electrically connected to the fixed end.

[0061] It should be understood that the various forms of the processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in the disclosure of the present invention can be executed in parallel, sequentially, or in different orders, as long as the desired results of the technical solution disclosed in the present invention can be achieved. This is not limited herein.

[0062] The above specific embodiments do not constitute a limitation to the protection scope of the present invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A wrap-around wiring device, characterized in that, Comprising: A rotating component; A base, the rotating component is rotatably connected to the base, and the maximum rotation angle of the rotating component is a set angle; The base includes a frustum portion, and the rotating component is located on one side of the top end of the frustum portion; the diameter of the top end of the frustum portion is smaller than the diameter of the bottom end of the frustum portion. The base includes an upper end portion connected to the top end of the frustum portion. The upper end portion is provided with a groove portion and a window communicating with the groove portion. The groove portion is recessed downward from the surface of the upper end portion away from the frustum portion and extends along the circumferential direction of the upper end portion; one end of the cable passes through the window and is arranged along the groove portion and is connected to the rotating component; the base further includes a rib structure provided on the side surface of the frustum portion. The rib structure is provided with a limiting groove. The limiting groove is recessed inward from one side of the rib structure close to the side surface of the frustum portion and extends along the inclined direction of the side surface of the frustum portion so that the cable will adhere to the side surface of the frustum portion; the other end of the cable is wound around the side surface of the frustum portion and is limited between the limiting groove and the side surface of the frustum portion; and A cable, one end of the cable is connected to the rotating component, and the other end is wound around the side surface of the frustum portion and is connected to the bottom end of the frustum portion.

2. The wrap-around wiring device according to claim 1, wherein The rotating component includes a main body portion and a connecting block. The connecting block is rotatably provided on the main body portion with the radial direction of the main body portion as the axis, and one end of the cable is connected to the connecting block.

3. The wrap-around wiring device according to claim 1, wherein One side edge of the window close to the center of the upper end portion abuts against the edge of the top end of the frustum portion.

4. The wrap-around wiring device according to claim 1, characterized in that The base includes a lower end portion connected to the bottom end of the frustum portion. The lower end portion includes an upper surface, a side surface, and an arc surface connecting between the upper surface and the side surface. The arc surface is provided with a plurality of mounting through holes, and the plurality of mounting through holes are arranged at equal intervals along the circumferential direction of the lower end portion.

5. The wrap-around wiring device according to claim 1, characterized in that The number of the rib structures is multiple, and the multiple rib structures are arranged at equal intervals along the circumferential direction of the frustum portion.

6. The wrap-around wiring device according to claim 1, characterized in that, The depth of the limiting groove is greater than the diameter of the cable; and / or The length of the limiting groove is less than the length of the generatrix of the frustum portion.

7. The wrap-around wiring device according to claim 1, wherein The calculation formula of the set angle is: Among them, is the number of turns of the cable around the frustum,[ is the vertical height of the frustum,[ is the radius of the cable,[ is the angle between the generatrix and the center line of the frustum,[ is the radius of the bottom end of the frustum.[ 8. A rotating mechanism, characterized in that, Including the wrap-around wiring device according to any one of claims 1-7.

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