A wireless slip ring

Abstract

The utility model discloses a wireless slip ring, including inner ring cover, outer ring cover, first wireless signal transmission module and second wireless signal transmission module, the inner ring cover is located in the outer ring cover, the inner ring cover with the outer ring cover both can rotate relatively, the waveguide tube cavity that surrounds the inner ring cover is formed between the inner ring cover and outer ring cover, the first wireless signal transmission module is located on the outer ring cover, the second wireless signal transmission module is located on the inner ring cover, the first wireless signal transmission module with the second wireless signal transmission module carries out wireless signal transmission through the waveguide tube cavity. This wireless slip ring high -speed signal transmission is stable and long service life.

Description

Technical Field

[0001] This utility model relates to the field of slip ring technology, and in particular to a wireless slip ring. Background Technology

[0002] In modern industrial and consumer electronics fields, stable power and data transmission are required between many rotating components, such as robot joints, pan-tilt units, surveillance cameras, and die bonders. Currently, the mainstream solution is to use contact slip rings, a technology that achieves power and signal transmission through contact between a gold-plated metal brush and a gold-plated metal ring.

[0003] However, contact slip rings have many problems: First, their lifespan is limited because the metal brush and metal ring will continuously rub against each other during rotation, causing the plating to wear and affecting the contact effect; second, the contact resistance of contact slip rings will change with the increase of usage time, making it difficult to achieve stable impedance control, and therefore cannot meet the needs of high-speed signal transmission. Utility Model Content

[0004] The technical problem solved by this utility model is to provide a wireless slip ring with stable high-speed signal transmission and long service life.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a wireless slip ring, comprising an inner ring sleeve, an outer ring sleeve, a first wireless signal transmission module, and a second wireless signal transmission module. The inner ring sleeve is located inside the outer ring sleeve, and the inner ring sleeve and the outer ring sleeve are rotatable relative to each other. A waveguide cavity surrounding the inner ring sleeve is formed between the inner ring sleeve and the outer ring sleeve. The first wireless signal transmission module is disposed on the outer ring sleeve, and the second wireless signal transmission module is disposed on the inner ring sleeve. The first wireless signal transmission module and the second wireless signal transmission module transmit wireless signals through the waveguide cavity.

[0006] In one embodiment, the waveguide cavity is disposed on the outer surface of the inner ring; or,

[0007] The waveguide cavity is located on the inner surface of the outer ring; or,

[0008] The waveguide cavity includes a first annular groove on the inner surface of the outer ring and a second annular groove on the outer surface of the inner ring, wherein the first annular groove and the second annular groove are aligned and connected.

[0009] In one embodiment, the outer ring sleeve is provided with a first mounting surface, and the first wireless signal transmission module is disposed on the first mounting surface.

[0010] In one embodiment, the first mounting plane is disposed on the outer surface of the outer ring sleeve, and the outer ring sleeve is provided with a first window communicating with the waveguide cavity and the first mounting plane.

[0011] In one embodiment, a portion of the first wireless signal transmission module is located within the first window.

[0012] In one embodiment, the inner ring sleeve is provided with a second mounting surface, and the second wireless signal transmission module is disposed on the second mounting surface.

[0013] In one embodiment, the inner ring sleeve is provided with a mounting hole, and the mounting hole shares a central axis with the inner ring sleeve.

[0014] In one embodiment, the second mounting plane is disposed on the wall of the mounting hole, and the inner ring sleeve is provided with a second window communicating with the waveguide cavity and the second mounting plane.

[0015] In one embodiment, a portion of the second wireless signal transmission module is located within the second window.

[0016] In one embodiment, the waveguide cavity is multiple.

[0017] The beneficial effects of this invention are as follows: This wireless slip ring features a novel structure. By employing a wireless signal transmission module and a waveguide cavity design, it completely eliminates the mechanical contact between the metal brush and the metal ring in traditional contact slip rings, fundamentally solving the problem of plating wear caused by friction. This significantly extends the slip ring's service life, enabling it to adapt to long-term, high-frequency rotational motion requirements. Simultaneously, signal transmission between the wireless signal transmission modules is no longer affected by changes in contact resistance, achieving stable impedance control and ensuring the reliability of high-speed signal transmission, meeting the requirements of modern industrial and consumer electronics fields for high-bandwidth, low-latency data transmission. Furthermore, the waveguide cavity further optimizes the signal transmission path, reducing signal attenuation and interference during transmission, and improving signal transmission quality and stability. This wireless slip ring not only simplifies the overall slip ring design but also reduces system complexity and maintenance costs, improving the overall stability and reliability of the system, providing an efficient, stable, and long-life solution for data transmission between rotating components. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the wireless slip ring in this embodiment.

[0020] Figure 2 This is a cross-sectional view of the wireless slip ring in this embodiment.

[0021] Figure 3 This is a schematic diagram of the inner ring sleeve in the wireless slip ring of this embodiment 1;

[0022] Figure 4 This is a schematic diagram of the outer ring sleeve in the wireless slip ring of this embodiment 1;

[0023] Figure 5 This is a cross-sectional view of another structure of the wireless slip ring in this embodiment.

[0024] Explanation of icon numbers:

[0025] 1. Inner ring sleeve; 11. Second mounting plane; 12. Second window; 13. Mounting hole;

[0026] 2. Outer ring sleeve; 21. First mounting plane; 22. First window;

[0027] 3. First wireless signal transmission module; 31. First circuit board; 32. First wireless communication chip;

[0028] 4. Second wireless signal transmission module; 41. Second circuit board; 42. Second wireless communication chip;

[0029] 5. Waveguide cavity; 51. First annular groove; 52. Second annular groove. Detailed Implementation

[0030] The purpose, features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] It should be noted that if the embodiments of this utility model involve directional indicators such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicators will also change accordingly.

[0033] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0034] Furthermore, if the meaning of "and / or" in the entire text is to include three parallel solutions, taking "and A / or B" as an example, it includes solution A, solution B, and a solution that simultaneously satisfies both A and B. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] Example 1

[0037] Please refer to Figures 1 to 5 One embodiment of this utility model is as follows: a wireless slip ring, including an inner ring sleeve 1, an outer ring sleeve 2, a first wireless signal transmission module 3, and a second wireless signal transmission module 4. The inner ring sleeve 1 is located inside the outer ring sleeve 2, and the inner ring sleeve 1 and the outer ring sleeve 2 can rotate relative to each other. A waveguide cavity 5 is formed between the inner ring sleeve 1 and the outer ring sleeve 2, surrounding the inner ring sleeve 1. The first wireless signal transmission module 3 is disposed on the outer ring sleeve 2, and the second wireless signal transmission module 4 is disposed on the inner ring sleeve 1. The first wireless signal transmission module 3 and the second wireless signal transmission module 4 transmit wireless signals through the waveguide cavity 5.

[0038] Preferably, the inner ring sleeve 1 and the outer ring sleeve 2 are both metal structural components. In other embodiments, the inner ring sleeve 1 and the outer ring sleeve 2 may also be made of other materials. In this case, an electromagnetic wave reflecting coating (such as a metal coating) or a metal film layer may be provided on the wall surface of the waveguide cavity 5.

[0039] The first wireless signal transmission module 3 is a signal receiving module, a signal transmitting module, or a signal transceiver module. Similarly, the second wireless signal transmission module 4 is a signal receiving module, a signal transmitting module, or a signal transceiver module. Among the first wireless signal transmission module 3 and the second wireless signal transmission module 4 corresponding to the same waveguide cavity 5, one is a signal receiving module and the other is a signal transmitting module; or, the first wireless signal transmission module 3 and the second wireless signal transmission module 4 corresponding to the same waveguide cavity 5 are each a signal transceiver module.

[0040] In one or more embodiments, the first wireless signal transmission module 3 includes a first circuit board 31 and a first wireless communication chip 32 disposed on the first circuit board 31. The first wireless communication chip 32 may adopt an AIP scheme or a board-level antenna scheme. Similarly, the second wireless signal transmission module 4 includes a second circuit board 41 and a second wireless communication chip 42 disposed on the second circuit board 41. The second wireless communication chip 42 may adopt an AIP scheme or a board-level antenna scheme.

[0041] In this embodiment, the waveguide cavity 5 includes a first annular groove 51 disposed on the inner surface of the outer ring sleeve 2 and a second annular groove 52 disposed on the outer surface of the inner ring sleeve 1. The first annular groove 51 and the second annular groove 52 are aligned and connected, that is, the waveguide cavity 5 is composed of the first annular groove 51 and the second annular groove 52. In some embodiments, the waveguide cavity 5 is disposed on the outer surface of the inner ring sleeve 1, that is, the entire area of ​​the waveguide cavity 5 is located on the inner ring sleeve 1; in other embodiments, the waveguide cavity 5 is disposed on the inner surface of the outer ring sleeve 2, that is, the entire area of ​​the waveguide cavity 5 is located on the outer ring sleeve 2. By disposing of the waveguide cavity 5 on the outer surface of the inner ring sleeve 1 or the inner surface of the outer ring sleeve 2, or by adopting a structure in which the inner and outer annular grooves are aligned and connected, various schemes for implementing the waveguide cavity 5 are provided, increasing the design flexibility.

[0042] The outer ring sleeve 2 is provided with a first mounting surface 21, and the first wireless signal transmission module 3 is disposed on the first mounting surface 21. Providing the first mounting surface 21 on the outer ring sleeve 2 for mounting the first wireless signal transmission module 3 makes the installation of the first wireless signal transmission module 3 more stable and reliable. This design simplifies the installation process, improves production efficiency, and also facilitates subsequent maintenance and replacement, enhancing the overall stability and reliability of the wireless slip ring.

[0043] The first mounting plane 21 is located on the outer surface of the outer ring sleeve 2, and the outer ring sleeve 2 has a first window 22 connecting the waveguide cavity 5 and the first mounting plane 21. Placing the first mounting plane 21 on the outer surface of the outer ring sleeve 2 and connecting it to the waveguide cavity 5 through the first window 22 not only provides a good mounting position for the first wireless signal transmission module 3 but also ensures that the signal can be transmitted efficiently through the waveguide cavity 5. The design of the first window 22 further optimizes the signal transmission path, reduces signal attenuation and interference during transmission, and improves the quality and stability of signal transmission.

[0044] A portion of the first wireless signal transmission module 3 is located within the first window 22, which optimizes the signal transmission path of the first wireless signal transmission module 3, ensuring that the signal can enter the waveguide cavity 5 more efficiently during transmission, reducing signal transmission loss, and improving the efficiency and stability of signal transmission.

[0045] The inner ring sleeve 1 is provided with a second mounting surface 11, and the second wireless signal transmission module 4 is disposed on the second mounting surface 11. Providing the second mounting surface 11 on the inner ring sleeve 1 for mounting the second wireless signal transmission module 4 makes the installation of the second wireless signal transmission module 4 more stable and reliable. This design simplifies the installation process, improves production efficiency, and also facilitates subsequent maintenance and replacement, enhancing the overall stability and reliability of the wireless slip ring.

[0046] In this embodiment, the inner ring sleeve 1 is a rotor, and the outer ring sleeve 2 is a stator. The inner ring sleeve 1 is rotatable relative to the outer ring sleeve 2. Optionally, the inner ring sleeve 1 is provided with a mounting hole 13, which shares a central axis with the inner ring sleeve 1. In practical applications, the inner ring sleeve 1 can be mounted on a rotating shaft through the mounting hole 13 and rotate with the shaft. In other embodiments, the inner ring sleeve 1 is a stator, and the outer ring sleeve 2 is a rotor. In this case, the outer ring sleeve 2 is rotatable relative to the inner ring sleeve 1.

[0047] The second mounting plane 11 is disposed on the wall of the mounting hole 13, and the inner ring sleeve 1 is provided with a second window 12 connecting the waveguide cavity 5 and the second mounting plane 11. By placing the second mounting plane 11 on the wall of the mounting hole 13 and connecting it to the waveguide cavity 5 through the second window 12, this design not only provides a good mounting position for the second wireless signal transmission module 4 but also ensures that the signal can be transmitted efficiently through the waveguide cavity 5. The design of the second window 12 further optimizes the signal transmission path, reduces signal attenuation and interference during transmission, and improves the quality and stability of signal transmission.

[0048] A portion of the second wireless signal transmission module 4 is located within the second window 12, which optimizes the signal transmission path of the second wireless signal transmission module 4, ensuring that the signal can enter the waveguide cavity 5 more efficiently during transmission, reducing signal transmission loss, and improving the efficiency and stability of signal transmission.

[0049] In some embodiments, the waveguide cavity 5 is a single unit; in other embodiments, the waveguide cavity 5 is a multiple unit. The number of signal transmission channels can be flexibly configured according to actual needs, thereby meeting the requirements of multi-channel signal transmission in different application scenarios. The design of multiple waveguide cavities 5 can further improve the stability and reliability of signal transmission, reduce mutual interference between signals, and optimize overall performance. When the number of waveguide cavities 5 is multiple, each waveguide cavity 5 corresponds to a first wireless signal transmission module 3 and a second wireless signal transmission module 4, respectively.

[0050] In one wireless slip ring of this embodiment, the number of waveguide cavities 5 is three; in another wireless slip ring of this embodiment, the number of waveguide cavities 5 is six; in other embodiments, the number of waveguide cavities 5 may be two, four, five, seven or more.

[0051] The above are merely optional embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A wireless slip ring, characterized in that, The device includes an inner ring, an outer ring, a first wireless signal transmission module, and a second wireless signal transmission module. The inner ring is located inside the outer ring and the two rings are rotatable relative to each other. A waveguide cavity surrounding the inner ring is formed between the inner and outer rings. The first wireless signal transmission module is disposed on the outer ring, and the second wireless signal transmission module is disposed on the inner ring. The first and second wireless signal transmission modules transmit wireless signals through the waveguide cavity.

2. The wireless slip ring according to claim 1, characterized in that, The waveguide cavity is located on the outer surface of the inner ring; or... The waveguide cavity is located on the inner surface of the outer ring; or, The waveguide cavity includes a first annular groove on the inner surface of the outer ring and a second annular groove on the outer surface of the inner ring, wherein the first annular groove and the second annular groove are aligned and connected.

3. The wireless slip ring according to claim 1, characterized in that, The outer ring is provided with a first mounting surface, and the first wireless signal transmission module is disposed on the first mounting surface.

4. The wireless slip ring according to claim 3, characterized in that, The first mounting plane is located on the outer surface of the outer ring sleeve, and the outer ring sleeve is provided with a first window that connects the waveguide cavity and the first mounting plane.

5. The wireless slip ring according to claim 4, characterized in that, A portion of the first wireless signal transmission module is located within the first window.

6. The wireless slip ring according to claim 1, characterized in that, The inner ring is provided with a second mounting surface, and the second wireless signal transmission module is disposed on the second mounting surface.

7. The wireless slip ring according to claim 6, characterized in that, The inner ring sleeve is provided with a mounting hole, and the mounting hole and the inner ring sleeve share the same central axis.

8. The wireless slip ring according to claim 7, characterized in that, The second mounting plane is located on the wall of the mounting hole, and the inner ring sleeve is provided with a second window that connects the waveguide cavity and the second mounting plane.

9. The wireless slip ring according to claim 8, characterized in that, A portion of the second wireless signal transmission module is located within the second window.

10. The wireless slip ring according to claim 1, characterized in that, The waveguide cavity is multiple.

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