Ball type electrically conductive slip ring

Abstract

The utility model relates to conductive slip ring technical field, specifically disclose a ball type conductive slip ring, in this ball type conductive slip ring, multiple rolling grooves are concentric circle setting in first casing, each rolling groove corresponds at least one ball, and the ball rolls around the axis of rolling groove, second casing is rotatably connected with first casing, and the rotation axis is collinear with the axis of rolling groove, multiple elastic limit parts correspond with multiple balls one to one, and one end of elastic limit part is rotatably matched with the ball, and the other end is located at the outside of second casing. The above-mentioned setting helps to prolong the service life, improves the assembly efficiency.

Description

Technical Field

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

[0002] In electronic products, there are often two relatively rotating components that need to be connected by wiring. To ensure the reliability of the wiring connection during the relative rotation of the two components, conductive slip rings are generally used. In related technologies, conductive slip rings often employ a brush-like mechanism, where a flexible brush is mounted on the fixed part of the conductive slip ring, and the other end of the flexible brush is slidably connected to the rotating part of the conductive slip ring. However, the flexible brush has a large structural volume, and the sliding friction method is prone to wear, reducing the service life of the conductive slip ring. Furthermore, it is difficult to directly connect the flexible brush to external cables; often, a separate connecting rod is required, with one end connected to the flexible brush and the other end connected to the external cable. This increases the number of components and reduces assembly efficiency.

[0003] Therefore, it is urgent to study a ball-type conductive slip ring to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a ball-bearing conductive slip ring to solve the problems of easy wear and low assembly efficiency of elastic brushes in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A ball-type conductive slip ring, comprising:

[0007] First shell;

[0008] Multiple rolling grooves are arranged concentrically in the first housing.

[0009] Multiple balls, each of the rolling grooves corresponds to at least one ball, and the balls roll about the axis of the rolling groove;

[0010] The second housing is rotatably connected to the first housing, and the axis of rotation is collinear with the axis of the rolling groove;

[0011] Multiple elastic limiting members are provided, and each of the multiple elastic limiting members corresponds to a multiple of the multiple balls. One end of each elastic limiting member is rotatably engaged with the ball, and the other end is located on the outside of the second housing.

[0012] As an optional technical solution for a ball-type conductive slip ring, the elastic limiting member includes a limiting pin and a spring. The multiple limiting pins correspond one-to-one with the multiple balls. The second housing has a first mounting hole. The limiting pin includes a pin body and a limiting part disposed at one end of the pin body. The pin body passes through the first mounting hole and reciprocates relative to the second housing along its own axis. The spring is sleeved on the pin body and abuts against the limiting part and the second housing.

[0013] As an optional technical solution for ball-type conductive slip rings, a mounting groove is provided at the end of the pin body away from the limiting part; and / or,

[0014] The limiting part has a groove at one end away from the pin body, and the inner wall of the groove mates with the ball surface.

[0015] As an optional technical solution for ball-type conductive slip rings, the rolling groove, the ball, and the limiting pin are all made of conductive materials.

[0016] As an optional technical solution for ball-type conductive slip ring, the ball-type conductive slip ring further includes multiple connecting members, which are connected one-to-one with the rolling groove. The bottom of the first housing is provided with multiple second mounting holes, which correspond one-to-one with the connecting members, and the connecting members pass through the second mounting holes.

[0017] As an optional technical solution for ball-type conductive slip rings, three balls are tumbling connected in each of the rolling grooves, and the three balls are spaced apart.

[0018] As an optional technical solution for ball-type conductive slip rings, the ball-type conductive slip rings further include bearings and fasteners. The bearings have an inner ring and an outer ring that rotate relative to each other. One of the first housing and the second housing is connected to the outer ring, and the other is connected to the inner ring via the fasteners.

[0019] As an optional technical solution for a ball-type conductive slip ring, the first housing has a first channel, the second housing has a second channel, the fastener includes a locking screw and a nut, the outer ring is interference-fitted with the first channel, the locking screw passes through the inner ring and the second channel and is screwed to the nut, and the locking screw is interference-fitted with the inner ring.

[0020] As an optional technical solution for ball-type conductive slip ring, the ball-type conductive slip ring includes a crimping member, the crimping member is annular, the outer edge of the second housing is provided with a stepped portion, the crimping member is sleeved on the stepped portion, part of the crimping member abuts against the axial end face of the stepped portion, and the remaining part is connected to the first housing, and the inner edge of the crimping member and the outer edge of the stepped portion have a certain preset distance.

[0021] As an optional technical solution for ball-type conductive slip rings, the outer edge of the first housing is provided with at least one connection hole, through which the first housing is connected to an external component.

[0022] This utility model has at least the following beneficial effects:

[0023] This invention provides a ball-bearing conductive slip ring. In this slip ring, multiple rolling grooves are concentrically arranged in a first housing. Each rolling groove corresponds to at least one ball, which rolls around the axis of the rolling groove. A second housing is rotatably connected to the first housing, and the axis of rotation is collinear with the axis of the rolling groove. Multiple elastic limiting members correspond one-to-one with the multiple balls, with one end of the elastic limiting member rotatably engaging with the ball, and the other end located on the outside of the second housing. By arranging the balls, during the relative rotation of the second and first housings, the elastic limiting members and the balls rotate in engagement, as do the rolling grooves and the balls. Compared to the sliding friction in existing technologies, this rolling engagement method reduces wear on the rolling grooves, balls, and elastic limiting members, extending their service life. Furthermore, the elastic limiting members being located on the outside of the second housing facilitates connection to external cables, improving connection convenience and eliminating the need for separate connecting components, thus improving assembly efficiency. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model 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 content of the embodiments of this utility model and these drawings without creative effort.

[0025] Figure 1 This is a dihedral view of the ball-type conductive slip ring in an embodiment of this utility model;

[0026] Figure 2 This is a front view of the ball-type conductive slip ring in an embodiment of this utility model;

[0027] Figure 3 This is a bottom view of the ball-type conductive slip ring in an embodiment of this utility model;

[0028] Figure 4 for Figure 3Cross-sectional view along the AA direction;

[0029] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0030] Figure 6 for Figure 4 Enlarged view of point C in the middle;

[0031] Figure 7 This is an exploded view of the ball-type conductive slip ring in an embodiment of this utility model;

[0032] Figure 8 This is a schematic diagram of the structure of the ball-type conductive slip ring in the embodiment of this utility model, with the pressing component hidden.

[0033] In the picture:

[0034] 1000, Cables;

[0035] 100. First housing; 110. First channel; 120. End cap; 130. Connecting hole; 140. Second mounting hole; 150. Positioning pin;

[0036] 200. Rolling groove; 210. Connecting part;

[0037] 300, ball bearings;

[0038] 400, Second housing; 410, Second channel; 420, Press-fit component; 430, First mounting hole; 440, Stepped portion;

[0039] 500, Limiting pin; 510, Pin body; 520, Limiting part; 521, Groove;

[0040] 600. Spring;

[0041] 700, bearing; 710, inner ring; 720, outer ring;

[0042] 800. Fastener; 810. Locking screw; 811. Nut; 812. Fixing part; 813. Extension part; 814. Threaded part; 820. Nut. Detailed Implementation

[0043] Before explaining any implementation of this application in detail, it should be understood that this application is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0044] In this application, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0045] In this application, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "and / or" relationship.

[0046] In this application, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0047] In this application, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the values ​​and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​not using relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0048] In this application, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0049] In this application, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when an element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent positive orientation but can also be understood as lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.

[0050] like Figures 1 to 8 As shown, this embodiment provides a ball-type conductive slip ring, which is used between two relatively rotating components such as gimbal cameras or AI glasses, and provides wiring connections for the two relatively rotating components.

[0051] Combination Figure 4 and Figure 5 As shown, the ball-type conductive slip ring includes a first housing 100, a plurality of rolling grooves 200, a plurality of balls 300, a second housing 400, and a plurality of elastic limiting members. The plurality of rolling grooves 200 are concentrically arranged in the first housing 100; each rolling groove 200 corresponds to at least one ball 300, and the ball 300 rolls around the axis of the rolling groove 200; the second housing 400 is rotatably connected to the first housing 100, and its axis of rotation is collinear with the axis of the rolling groove 200; the plurality of elastic limiting members correspond one-to-one with the plurality of balls 300, one end of the elastic limiting member rotatably engages with a ball 300, and the other end is located on the outside of the second housing 400.

[0052] By using the ball bearing 300, the elastic limiting member and the ball bearing 300 rotate in coordination during the relative rotation of the second housing 400 and the first housing 100, and the rolling groove 200 and the ball bearing 300 also rotate in coordination. Compared with the sliding friction in the prior art, the rolling coordination reduces the wear of the rolling groove 200, the ball bearing 300 and the elastic limiting member, and extends the service life. In addition, one end of the elastic limiting member is located on the outside of the second housing 400, which facilitates connection with the cable 1000, improves connection convenience, and eliminates the need for a separate connector 210, thereby improving assembly efficiency.

[0053] The elastic limiting component includes limiting pins 500 and springs 600. Multiple limiting pins 500 correspond one-to-one with multiple balls 300. The second housing 400 has multiple first mounting holes 430, each corresponding to a limiting pin 500. Each limiting pin 500 includes a pin body 510 and a limiting portion 520 located at one end of the pin body 510. The pin body 510 passes through the first mounting hole 430, with its other end located outside the first mounting hole 430, and reciprocates relative to the second housing 400 along its own axis. The spring 600 is sleeved on the pin body 510 and abuts against the limiting portion 520 and the second housing 400. The outer diameter of the limiting portion 520 is larger than the outer diameter of the pin body 510, and the diameter of the spring 600 is larger than the diameter of the pin body 510 but smaller than the diameter of the limiting portion 520. The elastic force acts on the limit pin 500, causing the limit pin 500 to move towards the rolling groove 200, thereby clamping the ball 300 between the limit pin 500 and the rolling groove 200, ensuring the reliability of the connection between the rolling groove 200 and the ball 300, as well as between the ball 300 and the limit pin 500, and reducing the risk of circuit breakage.

[0054] To improve connection reliability, a groove 521 is further provided at the end of the limiting part 520 away from the pin body 510. The inner wall surface of the groove 521 mates with the surface of the ball 300, thereby increasing the contact area between the limiting part 520 and the ball 300, ensuring the reliability of the electrical connection, and reducing the risk of circuit breakage. For example, the depth of the groove 521 is less than or equal to the radius of the ball 300. Furthermore, in the axial cross-section of the rolling groove 200, the portion of the rolling groove 200 that contacts the ball 300 is U-shaped, and the depth of the rolling groove 200 is less than or equal to the radius of the ball 300.

[0055] In some embodiments, the rolling groove 200, the ball 300, and the limiting pin 500 are all made of conductive materials. Specifically, the rolling groove 200, the ball 300, and the limiting pin 500 are all made of copper.

[0056] In other embodiments, the spring 600 is disposed between the rolling groove 200 and the first housing 100 (not shown in the figure) so that the rolling groove 200 maintains a tendency to move closer to the second housing 400, thereby keeping the rolling groove 200 and the ball 300 in contact, and the ball 300 and the limiting pin 500 in contact.

[0057] To further improve the ease of connection between the cable 1000 and the limiting pin 500, in some embodiments, a mounting groove is provided at the end of the pin body 510 away from the limiting part 520. In use, the cable 1000 is soldered into the mounting groove or interference-fitted into the mounting groove. Figure 5 As shown.

[0058] Combination Figure 4As shown, the ball-type conductive slip ring also includes multiple connectors 210, each corresponding to a rolling groove 200. The bottom of the first housing 100 has multiple second mounting holes 140, each corresponding to a connector 210. Each connector 210 passes through its corresponding second mounting hole 140, with a portion located outside the second mounting hole 140 for electrical connection to the motherboard. The connector 210 is plate-shaped. It has fixing holes for connection to circuitry on the motherboard. The connector 210 and the rolling groove 200 are integrally formed.

[0059] To improve connection reliability, three rolling balls 300 are connected within each rolling groove 200, with the three balls 300 spaced apart. Each of the three balls 300 corresponds one-to-one with one of the three limiting pins 500. There are six rolling grooves 200, a total of eighteen balls 300, and eighteen limiting pins 500, enabling the connection of six lines. The first housing 100 has six annular grooves, and the rolling grooves 200 are installed within these annular grooves.

[0060] Combination Figure 6 As shown, in some embodiments, the ball-type conductive slip ring further includes a bearing 700 and a fastener 800. The bearing 700 has an inner ring 710 and an outer ring 720 that rotate relative to each other. One of the first housing 100 and the second housing 400 is connected to the outer ring 720, and the other is connected to the inner ring 710 via the fastener 800, so that the rotation between the second housing 400 and the first housing 100 is smoother; at the same time, wear between the two is avoided, and the service life is improved.

[0061] Specifically, the second housing 400 is provided with a second channel 410, the first housing 100 is provided with a first channel 110, and the fastener 800 includes a locking screw 810 and a nut 820. The outer ring 720 is fixed to the side wall of the first channel 110. The locking screw 810 passes through the inner ring 710 and the second channel 410 and is screwed to the nut 820. Along the axial direction of the locking screw 810, the first housing 100 and the second housing 400 are restricted to move away from each other.

[0062] The locking screw 810 includes a nut 811, a fixing part 812, an extension part 813, and a threaded part 814 arranged sequentially along its own axis. The fixing part 812 is interference-fitted with the inner ring 710 to ensure that the locking screw 810 and the inner ring 710 rotate synchronously and rotate synchronously with the second housing 400. The extension part 813 passes through the second channel 410. The threaded part 814 is threaded with the nut 820. The nut 811 abuts against one end of the inner ring 710, and the second housing 400 abuts against the other end of the inner ring 710. To ensure the connection stability between the bearing 700 and the first housing 100, in some embodiments, the first channel 110 includes a first segment and a second segment. The first segment is located at the end of the second segment near the second housing 400, and the diameter of the first segment is smaller than the diameter of the second segment. The outer diameter of the outer ring 720 is larger than the diameter of the first segment, and the outer diameter of the inner ring 710 is smaller than the diameter of the first segment. The bearing 700 is placed in the second segment, and one end of the outer ring 720 abuts against the stepped surface between the first and second segments. The end cap 120 is connected to the first housing 100 and pressed onto the other end of the outer ring 720. The end cap 120 and the first housing 100 are screwed together. The end cap 120 is annular, and the inner diameter of the end cap 120 is smaller than the outer diameter of the outer ring 720 but larger than the inner diameter of the outer ring 720. In this embodiment, the second channel 410 is a countersunk hole, and the nut 820 is located in the larger hole of the countersunk hole, and the outer diameter of the nut 820 is larger than the smaller hole of the countersunk hole.

[0063] Combination Figure 5 and Figure 7 As shown, in some embodiments, the ball-type conductive slip ring includes a pressing member 420, which is annular. The outer edge of the second housing 400 has a stepped portion 440. The pressing member 420 is fitted onto the stepped portion 440, with a portion of the pressing member 420 abutting against the axial end face of the stepped portion 440, and the remaining portion connected to the first housing 100. The inner edge of the pressing member 420 and the outer edge of the stepped portion 440 have a certain preset distance. The pressing member 420 slides and rubs against the axial end face of the stepped portion 440. In other embodiments, the pressing member 420 and the axial end face of the stepped portion 440 have a certain preset distance. The pressing member 420 effectively ensures that the plane of the side of the second housing 400 away from the first housing 100 is parallel to the pressing surface of the pressing member 420, thereby ensuring the installation accuracy of the second housing 400 relative to the first housing 100. The first housing 100 is provided with positioning pins 150, and the crimping member 420 is provided with positioning holes, in which the positioning pins 150 pass. There are several positioning pins 150, which are evenly distributed around the axis of the first housing 100. The crimping member 420 is provided with several positioning holes, and each positioning hole corresponds to each positioning pin 150.

[0064] Combination Figure 1 and Figure 8As shown, the outer edge of the first housing 100 is provided with at least one connecting hole 130, through which the first housing 100 is connected to an external component. In practical applications, connecting screws pass through the connecting holes 130 and are threaded into the threaded holes of the external component. There are three connecting holes 130, which are evenly distributed around the axis of the first housing 100 to ensure balanced force distribution when the first housing 100 is connected to the external component.

[0065] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A ball-type conductive slip ring, characterized in that, include: First shell; Multiple rolling grooves are arranged concentrically in the first housing. Multiple balls, each of the rolling grooves corresponds to at least one ball, and the balls roll about the axis of the rolling groove; The second housing is rotatably connected to the first housing, and the axis of rotation is collinear with the axis of the rolling groove; Multiple elastic limiting members are provided, and each of the multiple elastic limiting members corresponds to a multiple of the multiple balls. One end of each elastic limiting member is rotatably engaged with the ball, and the other end is located on the outside of the second housing.

2. The ball-type conductive slip ring according to claim 1, characterized in that, The elastic limiting member includes a limiting pin and a spring. The multiple limiting pins correspond one-to-one with the multiple balls. The second housing has a first mounting hole. The limiting pin includes a pin body and a limiting part provided at one end of the pin body. The pin body passes through the first mounting hole and reciprocates relative to the second housing along its own axis. The spring is sleeved on the pin body and abuts against the limiting part and the second housing.

3. The ball-type conductive slip ring according to claim 2, characterized in that, The pin body has a mounting groove at one end away from the limiting part; and / or The limiting part has a groove at one end away from the pin body, and the inner wall of the groove mates with the ball surface.

4. The ball-type conductive slip ring according to claim 2, characterized in that, The rolling groove, the ball, and the limiting pin are all made of conductive material.

5. The ball-type conductive slip ring according to claim 1, characterized in that, The ball-type conductive slip ring also includes multiple connectors, each of which is connected to the rolling groove in a one-to-one manner. The bottom of the first housing is provided with multiple second mounting holes, each of which corresponds to a connector, and the connector extends out from the second mounting hole.

6. The ball-type conductive slip ring according to claim 1, characterized in that, Three balls are tumbling connected within each of the rolling grooves, and the three balls are spaced apart.

7. The ball-type conductive slip ring according to any one of claims 1-6, characterized in that, The ball-type conductive slip ring further includes a bearing and a fastener. The bearing has an inner ring and an outer ring that rotate relative to each other. One of the first housing and the second housing is connected to the outer ring, and the other is connected to the inner ring via the fastener.

8. The ball-type conductive slip ring according to claim 7, characterized in that, The first housing has a first channel, the second housing has a second channel, the fastener includes a locking screw and a nut, the outer ring is interference-fitted with the first channel, the locking screw passes through the inner ring and the second channel and is screwed to the nut, and the locking screw is interference-fitted with the inner ring.

9. The ball-type conductive slip ring according to any one of claims 1-6, characterized in that, The ball-type conductive slip ring includes a crimping member, which is annular. The outer edge of the second housing is provided with a stepped portion. The crimping member is sleeved on the stepped portion. Part of the crimping member abuts against the axial end face of the stepped portion, and the remaining part is connected to the first housing. The inner edge of the crimping member and the outer edge of the stepped portion have a certain preset distance.

10. The ball-type conductive slip ring according to any one of claims 1-6, characterized in that, The outer edge of the first housing is provided with at least one connection hole, through which the first housing is connected to an external component.

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