New rotary variable resistor rotation limiting structure and rotary variable resistor connector applying same

Abstract

The utility model discloses a novel rotary variable connection rotation limiting structure and the rotary variable connector of applying it. The novel rotary variable connection rotation limiting structure includes: the circumferential limiting track, the active part and the follower, the circular ring base body of circumferential limiting track is fixed in the fixed shell one side port of connector body, and the multiple arc passageways that are equally spaced concentric are equipped with on the base body outside face, and the adjacent end of adjacent arc passageway is connected through the transition passageway both ends and forms the circumferential passageway, the active part is connected the rotary shell of connector body, and the inner recess radial passageway is equipped with in the active part inner wall, and the instantaneous surrounding cavity of radial passageway and circumferential passageway and the follower are matched, and the rotation scanning area of radial passageway covers all arc passageways, and the inner end of follower is connected the circumferential passageway and is connected the radial passageway with outer end rolling, when rotary shell rotates, the active part makes the follower along circumferential passageway rolling. The utility model has the effect that accurate rotation, reliable connection and high product life.

Description

Technical Field

[0001] This utility model relates to the field of connectors, and in particular to a novel resolver rotation limiting structure and a resolver connector using the same. Background Technology

[0002] The robotics industry is developing rapidly, and resolvers are an important module of robot joints. Resolvers provide rotational motion through bearings and transmit electrical energy and signals through internal integrated circuits. The current resolver's unlimited rotation structure has the following problems: First, resolvers exhibit radial offset, resulting in inaccurate rotation position and reducing the accuracy of robot movements; Second, resolvers are prone to over-angle rotation, which may cause damage or even breakage to the cable due to rigid pulling, thereby reducing lead and transmission performance, resulting in lower reliability and shorter product lifespan. Utility Model Content

[0003] To address one or more of the aforementioned problems, this utility model provides a novel resolver rotation limiting structure and a resolver connector using the same.

[0004] According to one aspect of the present invention, the novel resolver rotation limiting structure includes: a circumferential limiting track, an active component, and a follower component;

[0005] The circular base of the circumferential limiting track is fixed to one side port of the fixed shell of the connector body. Multiple arc channels are provided at equal intervals and concentrically on the outer surface of the base. The adjacent ends of the adjacent arc channels are connected to the two ends of the transition channel to form a circumferential channel.

[0006] The active component is connected to the rotating shell of the connector body. The inner wall of the active component is provided with a concave radial channel. When the fixed shell and the rotating shell are assembled, the active component is directly facing the circumferential limiting track. The instantaneous surrounding cavity of the radial channel and the circumferential channel cooperates with the follower. The rotation scanning area of ​​the radial channel covers all the arc channels.

[0007] The inner end of the follower is rolledly connected to the circumferential channel and the outer end is rolledly connected to the radial channel. When the rotating shell rotates, the driving member causes the follower to roll along the circumferential channel.

[0008] Among them, the fixed shell and the rotating shell are opposite each other and rotatably connected.

[0009] The beneficial effects of this novel resolver rotation limiting structure are as follows: First, the instantaneous limiting cavity formed by the circumferential and radial channels can precisely limit the axial, radial, and circumferential movement of the follower, eliminating radial and axial offset of the resolver connector and ensuring precise rotation position, thereby guaranteeing the robot's motion accuracy. Second, the resolver connector can rotate safely within the circumferential channel without exceeding the channel's range, thus preventing over-angle rotation, effectively protecting the cable, ensuring high connection reliability, and extending product lifespan. Third, the follower uses a rolling connection, resulting in low resistance and enabling better jam-free limiting rotation.

[0010] In some implementations, the radial channel with a small gap fits into the circumferential channel to form a momentary closed enclosure of the cavity;

[0011] The follower is a steel rolling element of any shape, including spherical, cylindrical, and ellipsoidal.

[0012] In some implementations, the radial cross-section of the circumferential channel is rectangular, the chordal cross-section of the arc channel is rectangular, the transition channel and the arc channel have the same cross-section, and the instantaneous closed enclosure of the radial channel and the circumferential channel consists of several rectangular cavities.

[0013] In some implementations, the two endpoints of the radial channel and the centers of several circular arc channels are collinear.

[0014] In some implementations, the ends of the transition channel and the ends of the arc channel are provided with rounded corners.

[0015] In some implementations, the front end of the inner arc channel has a reserved arc that is shallower than the rear end, thereby creating a height difference between the front and rear ends.

[0016] In some implementations, the arc channel consists of two loops, from the beginning of the inner arc channel to the end of the outer arc channel, with the follower rotating at an angle of 660°.

[0017] In some embodiments, the substrate is integrally coaxially connected to one side port of the fixed housing;

[0018] The active component is integrally radially connected to the outer peripheral wall of the rotating shell, or the active component is integrally connected to the inner side wall of the rotating shell.

[0019] In some embodiments, a zero-marking locking piece is also included. The active component has a first locking groove, and the fixed housing has a second locking hole. When the first locking groove is aligned with the second locking hole, the front end of the zero-marking locking piece passes through the first locking groove and is inserted into the second locking hole with interference fit.

[0020] According to another aspect of this utility model, the resolver connector includes: a connector body and any one of the aforementioned resolver rotation limiting structures installed within the connector body. Its advantages are: this resolver connector can provide precise rotation, without positional offset or over-angle rotation, ensures safe internal circuit connection, and has a long product lifespan. Attached Figure Description

[0021] Figure 1 This is a cross-sectional schematic diagram of a novel refractive rotary limiting structure according to one embodiment of the present invention;

[0022] Figure 2 for Figure 1 A partially enlarged schematic diagram of the novel resolver rotation limiting structure shown.

[0023] Figure 3 for Figure 1 A three-dimensional partial schematic diagram of the active component shown;

[0024] Figure 4 for Figure 1 A three-dimensional schematic diagram of the circumferential limiting track shown;

[0025] Figure 5 This is a front view schematic diagram of a resolver connector according to one embodiment of the present invention;

[0026] Figure 6 for Figure 5 A three-dimensional schematic diagram of the zero-locking plate shown;

[0027] Figure 7 for Figure 5 A three-dimensional schematic diagram of the resolver connector shown.

[0028] Rotational limiting structure 01, circumferential limiting track 1, base 10, arc channel 11, transition channel 12, softened rounded corner 13, reserved arc 14, active component 2, radial channel 21, end point 22, first locking groove 23, moving mark 24, follower component 3;

[0029] Connector body 02, bearing 4, fixed shell 5, second locking hole 51, fixed mark 52, rotating shell 6, end shaft 60, actuator 7, zero mark locking plate 8, operating handle 81, locking plate 82, lower locking platform 83, through hole 84, front locking platform 85. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to the directions in the accompanying drawings, while the terms "inner" and "outer" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0031] Figures 1 to 7The figure schematically illustrates a novel resolver rotation limiting structure according to one embodiment of the present invention. As shown, the novel resolver rotation limiting structure includes: a circumferential limiting track 1, a driving member 2, and a follower member 3;

[0032] The annular base 10 of the circumferential limiting track 1 is fixed to one side port of the fixing shell 5 of the connector body 02. Multiple arc channels 11 are concentrically arranged at equal intervals on the outer surface of the base 10. The adjacent ends of adjacent arc channels 11 are connected to the two ends of the transition channel 12 to form a circumferential channel. The two ends of the transition channel 12 and the ends of the arc channels 11 are provided with softened rounded corners 13, which can realize the smooth turning of the circumferential channel.

[0033] The active component 2 is connected to the rotating shell 6 of the connector body 02, and the inner wall of the active component 2 is provided with a concave radial channel 21. Preferably, the radial channel 21 is fitted with the circumferential channel with a small gap to form an instantaneous closed cavity, and the outer end of the follower 3 contacts the radial channel 21 and the inner end contacts the circumferential channel.

[0034] When the fixed shell 5 and the rotating shell 6 are assembled, the active component 2 is directly facing the circumferential limiting track 1, the radial channel 21 and the instantaneous surrounding cavity of the circumferential channel cooperate with the follower 3, and the rotation scanning area of ​​the radial channel 21 covers all the arc channels 11.

[0035] The follower 3 is rolled at its inner end to the circumferential channel and at its outer end to the radial channel 21. When the rotating shell 6 rotates, the driving member 2 causes the follower 3 to roll along the circumferential channel. Preferably, the follower 3 is a steel rolling body of any shape, such as spherical, cylindrical, or ellipsoidal, which enables good rotational motion.

[0036] Among them, the fixed shell 5 and the rotating shell 6 are opposite each other and rotatably connected.

[0037] This novel resolver rotation limiting structure can be installed in a resolver connector. Through the circumferential limiting track 1, the active component 2, and the follower component 3, it achieves precise rotation angle. Its beneficial effects are as follows: First, the instantaneous limiting cavity formed by the circumferential and radial channels 21 of this resolver rotation limiting structure can precisely limit the axial, radial, and circumferential directions of the follower component 3, ensuring that the resolver connector has no radial or axial offset, guaranteeing precise rotation position, and thus ensuring the accuracy of robot movements. Second, the follower component 3 can rotate safely within the circumferential channel without exceeding the channel, thus preventing over-angle rotation, effectively protecting the cable, ensuring high connection reliability, and extending product lifespan. Third, the follower component 3 adopts a rolling connection, resulting in low resistance and achieving better jam-free limiting rotation.

[0038] Furthermore, the radial cross-section of the circumferential channel is rectangular, the chordal cross-section of the arc channel 11 is rectangular, the transition channel 12 has the same cross-section as the arc channel, and the instantaneously closed enclosing cavity of the radial channel 21 and the circumferential channel consists of several rectangular cavities. Preferably, the two endpoints 22 of the radial channel 21 and the centers of the several arc channels 11 are collinear. The beneficial effect is that this arrangement enables good limiting rolling.

[0039] Furthermore, the inner arc channel 11 has a shallower pre-reserved arc 14 at its front end compared to its rear end, thus creating a height difference between the front and rear ends for assembly. The beneficial effect is that this height difference allows for ample assembly allowance, ensuring smooth assembly.

[0040] Furthermore, the arc channel 11 consists of two concentric rings, extending from the beginning of the inner arc channel 11 to the end of the outer arc channel 11. The rotation angle of the follower 3 is 660°, preferably ±330°. The beneficial effect is that this arrangement ensures a good rotation range and a large coverage area.

[0041] Furthermore, the base 10 is integrally coaxially connected to one side port of the fixed shell 5; the active component 2 is integrally radially connected to the outer peripheral wall of the rotating shell 6 or integrally connected to the inner side wall of the rotating shell 6. Its advantages are: this integral design structure facilitates manufacturing, simplifies product components, and effectively saves costs.

[0042] Furthermore, it also includes a zero-marking locking piece 8. The driving component 2 has a first locking groove 23, the fixed housing 5 has a second locking hole 51, the driving component 2 has a moving indicator 24, and the fixed housing 5 has a fixed indicator 52. When the two are aligned, the moving indicator 62 and the fixed indicator 52 are aligned, the first locking groove 23 is aligned with the second locking hole 51, and the front end of the zero-marking locking piece 8 passes through the first locking groove 23 and is inserted into the second locking hole 51 with interference fit. Preferably, the zero-marking locking piece 8 includes an operating handle 81 and a locking piece 82 integrally formed on the front end of the operating handle 81. The rear end of the locking piece 82 has a lower locking platform 83 that cooperates with the first locking groove 23, and the front end is an elastic end with a through hole 84. The elastic end has a front locking platform 85 to prevent it from falling off. Its beneficial effects are: this setting facilitates operation and use, achieves high-precision operation, and avoids cumulative errors.

[0043] like Figures 4 to 7 As shown, this utility model also provides a resolver connector including: a connector body 02 and a resolver rotation limiting structure 01 installed in the connector body 02;

[0044] The connector body 02 includes a fixed shell 5 and a rotating shell 6 that are rotatably connected and symmetrically positioned. A bearing 4 is mounted in the central shaft hole of the fixed shell 1. An end shaft 60 at the center of the rotating shell 6 is sleeved and connected to the bearing 4 and a drive unit. The drive unit is an actuator 7, which can be a servo motor, causing the rotating shell 2 and the fixed shell 1 to rotate relative to each other. Its advantages are: this resolver connector provides precise rotation, with no positional offset or over-angle rotation, secure internal wiring connection, and long product lifespan.

[0045] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A novel resolver rotation limiting structure, characterized in that, Includes: circumferential limiting track (1), driving component (2), and follower component (3); The annular base (10) of the circumferential limiting track (1) is fixed to one side port of the fixing shell (5) of the connector body (02). Multiple arc channels (11) are provided at equal intervals on the outer side of the base (10). The adjacent ends of the adjacent arc channels (11) are connected to the two ends of the transition channel (12) to form a circumferential channel. The active component (2) is connected to the rotating shell (6) of the connector body (02). The inner wall of the active component (2) is provided with a concave radial channel (21). When the fixed shell (5) and the rotating shell (6) are assembled, the active component (2) is directly facing the circumferential limiting track (1). The instantaneous surrounding cavity of the radial channel (21) and the circumferential channel and the follower (3) cooperate. The rotation scanning area of ​​the radial channel (21) covers all the arc channels (11). The inner end of the follower (3) is rolledly connected to the circumferential channel and the outer end is rolledly connected to the radial channel (21). When the rotating shell (6) rotates, the driving member (2) causes the follower (3) to roll along the circumferential channel. Among them, the fixed shell (5) and the rotating shell (6) are opposite each other and rotatably connected.

2. The novel resolver rotation limiting structure according to claim 1, characterized in that, The radial channel (21) fits the circumferential channel with a small gap to form an instantaneously closed enclosing cavity; The follower (3) is a steel rolling element of any shape among spherical, cylindrical and ellipsoidal.

3. The novel resolver rotation limiting structure according to claim 2, characterized in that, The radial cross-section of the circumferential channel is rectangular, the chordal cross-section of the arc channel (11) is rectangular, the cross-section of the transition channel (12) is the same as that of the arc channel, and the instantaneous closed enclosure of the radial channel (21) and the circumferential channel consists of several rectangular cavities.

4. The novel resolver rotation limiting structure according to claim 2, characterized in that, The two endpoints (22) of the radial channel (21) and the centers of several circular arc channels (11) are collinear.

5. The novel resolver rotation limiting structure according to claim 1, characterized in that, The two ends of the transition channel (12) and the ends of the arc channel (11) are provided with softened rounded corners (13).

6. The novel resolver rotation limiting structure according to claim 1, characterized in that, The inner arc channel (11) has a reserved arc (14) at the front end that is shallower than the rear end, so that the front and rear ends form an assembly height difference.

7. The novel resolver rotation limiting structure according to claim 1, characterized in that, The circular arc channel (11) consists of two rings, from the starting end of the inner circular arc channel (11) to the end of the outer circular arc channel (11), and the rotation angle of the follower (3) is 660°.

8. The novel resolver rotation limiting structure according to claim 7, characterized in that, The base (10) is integrally and coaxially connected to one side port of the fixed shell (5); The active component (2) is integrally radially connected to the outer peripheral wall of the rotating shell (6) or the active component (2) is integrally connected to the inner side wall of the rotating shell (6).

9. The novel resolver rotation limiting structure according to claim 8, characterized in that, It also includes a zero-marking locking piece (8), the active component (2) is provided with a first locking groove (23), and the fixed shell (5) is provided with a second locking hole (51). When the first locking groove (23) is aligned with the second locking hole (51), the front end of the zero-marking locking piece (8) passes through the first locking groove (23) and is inserted into the second locking hole (51) with interference fit.

10. A resolver connector, characterized in that, include: The connector body (02) and the refractive rotation limiting structure (01) of any one of claims 1 to 9 installed in the connector body (02).

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