Compact multi-gear-ring independent rotary motion device

Abstract

The utility model relates to the technical field of mechanical transmission, in particular to a compact type multi-gear-ring independent rotary motion device which comprises a base body, positioning assemblies, gear rings and a driving mechanism, the base body is connected with at least two sets of positioning assemblies, each set of positioning assemblies comprises at least three positioning mechanisms located on the same circle, and the driving mechanism is arranged on the base body. The positioning mechanisms in the same set jointly limit a gear ring, and each gear ring is connected with a driving mechanism. The utility model aims at providing a compact independent movement device capable of being expanded into a plurality of gear rings, reducing the load of a driving motor and improving the stability and economical efficiency of the large gear ring, and the other purpose is to provide a compact independent movement device capable of being expanded into a plurality of gear rings to realize coaxial or non-coaxial independent operation of a plurality of mechanisms.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical transmission, and particularly relates to a compact multi-toothed ring independent rotation motion device. Background Art

[0002] The basic structure of in vitro diagnostic instruments includes a liquid path, a gas path, an electric circuit, and a mechanical transmission system. The mechanical transmission system mainly includes a sampling motion module, a sample transmission module, and a stirring and shaking module. The factors such as the functional integration and structural integration of the mechanical transmission system are the key to the miniaturization of the instrument. It can not only make full use of the limited space, but also save material and labor costs.

[0003] Although the pursuit of instrument miniaturization, the mechanical transmission part of in vitro diagnostic instruments often needs to use large toothed rings to achieve rotational motion, and usually at least two large toothed rings are required to complete their corresponding motion requirements.

[0004] In the gear transmission of transmission, the positioning method of the gear is bearing connection. When the outer diameter of the toothed ring reaches a certain level, it exceeds the bearing adaptation degree, and only large-diameter slewing bearings can be used, which are costly and do not conform to the lightweight use scenario. The patent document with the application number CN202120930808.5 discloses a reaction cup transportation device and an immunoassay device, and the limit of its toothed ring adopts the method that the toothed ring (outer circle transportation disk) rotates relative to the fixed part (inner circle transportation disk). However, such a method will result in a large rotational inertia of the load, thereby increasing the load on the driving motor, requiring higher requirements for the motor, with poor economy, and when it needs two toothed rings to rotate independently, the structure will become complicated and the device volume will increase. Content of the Utility Model

[0005] To solve the above technical problems, the utility model provides a compact multi-toothed ring independent rotation motion device. The purpose of the utility model is to provide a limit operation device for a large toothed ring, reduce the load of the driving motor, improve the stability and economy of the large toothed ring. Another purpose is to provide a compact independent motion device that can be expanded into multiple toothed rings to achieve the coaxial or non-coaxial independent operation of multiple mechanisms.

[0006] To achieve the above purpose, the technical means used in the utility model is:

[0007] A compact multi-toothed ring independent rotation motion device includes a base body, a positioning component, a toothed ring, and a driving mechanism. At least two groups of positioning components are connected to the base body. Each group of the positioning components includes at least three positioning mechanisms located on the same circle. The positioning mechanisms in the same group jointly limit a toothed ring, and each toothed ring is connected to a driving mechanism.

[0008] Furthermore, each of the positioning mechanisms includes a connecting member and a rotating member. The connecting member is connected to the base body, and the rotating member is rotatably connected to the connecting member. The outer peripheral surface of the rotating member abuts against the gear ring.

[0009] Furthermore, the outer peripheral surface of the rotating member has an annular "V"-shaped groove, and a flange corresponding to the "V"-shaped groove on the outer peripheral surface of the rotating member is provided on the side surface of the gear ring facing away from the teeth. The flange is in contact with the "V"-shaped groove.

[0010] Furthermore, the rotating member includes an upper roller and a lower roller. Both the upper roller and the lower roller are rotatably connected to the connecting member. The upper roller and the lower roller both have a round table surface, and the round table surfaces of the upper roller and the lower roller together form a "V"-shaped groove.

[0011] Furthermore, a stepped surface is provided on the upper surface of the gear ring. Two rotating members are rotatably connected to each connecting member. One rotating member is in rolling contact with the lower surface of the gear ring, and the other rotating member is in rolling contact with the stepped surface on the upper surface of the gear ring.

[0012] Furthermore, a positioning rod is adjustably connected to the connecting member. The positioning rod is connected to the connecting member through a positioning bolt, and the rotating member rotates freely at the end of the positioning rod.

[0013] Furthermore, a penetration hole for the positioning rod to pass through is provided on the connecting member. A threaded hole is provided on the side wall of the penetration hole. The positioning rod is pressed against the inner wall of the penetration hole by a positioning bolt screwed into the threaded hole, so that the connecting member is adjustably connected to the positioning rod.

[0014] Beneficial effects

[0015] 1. The present invention adopts the principle of determining a plane by three points, and uses at least three positioning mechanisms to position the gear ring, so that the contact between the positioning component and the gear ring is a line contact, reducing the contact surface and the frictional resistance between the gear ring and the fixing member, thereby reducing the load of the driving motor and improving the smoothness and economy of the large gear ring.

[0016] 2. The present invention can complete the positioning of the gear ring with a small number of positioning parts, meet the rotation requirements of the gear ring, and thus reserve more connection spaces, such as the inner space of the gear ring, for other positioning components or connecting other driven components. Therefore, the present invention can be extended to an independent movement device for multiple gear rings, and multiple groups of positioning components can be offset, making the structure of the extended multi-gear-ring independent rotation movement device of the present invention more compact, the device volume smaller, and having more connection options.

[0017] 3. The present invention discloses a variety of positioning mechanisms. When designing, one positioning mechanism can be selectively used, or multiple positioning mechanisms can be used in combination, which has stronger adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural view of the present utility model;

[0019] Figure 2 is a schematic side structural view of the present utility model;

[0020] Figure 3 is Figure 2 an enlarged schematic structural view of part A of

[0021] Figure 4 is a partial schematic structural view of the present utility model (without showing the first gear ring);

[0022] Figure 5 is a sectional schematic structural view of the present utility model (without showing the first gear ring);

[0023] Figure 6 is Figure 5 an enlarged schematic structural view of part B of

[0024] Figure 7 is the positioning mechanism (1) of the present utility model;

[0025] Figure 8 is the positioning mechanism (2) of the present utility model;

[0026] Figure 9 is the positioning mechanism (3) of the present utility model.

[0027] The reference numerals in the drawings are: 1, base body; 2, first gear ring; 3, second gear ring; 4, driving mechanism; 5, positioning mechanism; 6, connecting member; 7, rotating member; 8, "V"-shaped groove; 9, flange; 10, upper roller; 11, lower roller; 12, step surface; 13, positioning rod; 14, positioning bolt. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0028] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0029] As Figure 1 and Figure 2 shown, a compact multi-gear-ring independent rotation motion device includes a base body 1, a positioning assembly, a gear ring and a driving mechanism 4. Among them, the base body 1 is an installation foundation, which is a plate body, a block body or other connection foundations. The present utility model does not limit its shape and structure. At least two groups of positioning assemblies are connected to the base body 1. Each group of the positioning assemblies includes at least three positioning mechanisms 5 located on the same circle. The positioning mechanisms 5 in the same group jointly limit a gear ring, and each gear ring is connected to a driving mechanism 4.

[0030] In this embodiment, a first gear ring 2 and a second gear ring 3 are coaxially arranged above the substrate 1. Tooth teeth are arranged on the outer circumferential surfaces of the first gear ring 2 and the second gear ring 3, and the first gear ring 2 and the second gear ring 3 are respectively connected to the gear of a driving motor through the tooth teeth to realize the input of rotational power of the first gear ring 2 and the second gear ring 3. Three positioning mechanisms 5 are connected to the inner side of the first gear ring 2. The first gear ring 2 is located on the circumcircle of the three positioning mechanisms 5. As Figure 4 and Figure 5 shown, three positioning mechanisms 5 are connected to the outer side of the second gear ring 3. The second gear ring 3 is located on the inscribed circle of the three connected positioning mechanisms 5. When the first gear ring 2 and the second gear ring 3 are of different sizes, the first gear ring 2 and the second gear ring 3 can even be on the same plane, having a more compact structural characteristic.

[0031] As Figure 3 and Figure 6 shown, each of the positioning mechanisms 5 includes a connecting member 6 and a rotating member 7. The connecting member 6 is connected to the substrate 1, and the rotating member 7 is rotatably connected to the connecting member 6. The outer circumferential surface of the rotating member 7 abuts against the gear ring, positioning the gear ring in the up-and-down movement direction and the radius direction of the gear ring, so that the gear ring can only rotate around its own central axis.

[0032] Figure 7 , Figure 8 , Figure 9 respectively show the structural schematic diagrams of three positioning structures of the present utility model; when designing the present utility model, one or more positioning mechanisms 5 are selectively used.

[0033] The present utility model does not limit the number of the rotating members 7 on the connecting member 6, that is, the number of the rotating members 7 on the connecting member 6 is 1, 2 or more, and all are rotatably connected.

[0034] As Figure 6 and Figure 8 shown, Figure 6 and Figure 8 show the situation where one rotating member 7 is connected to the connecting member 6. The outer circumferential surface of the rotating member 7 has an annular "V"-shaped groove 8. A flange 9 corresponding to the "V"-shaped groove 8 on the outer circumferential surface of the rotating member 7 is provided on the side surface of the second gear ring 3 opposite to the tooth teeth. The flange 9 is in contact with the "V"-shaped groove 8. Since the "V"-shaped groove 8 is in contact with the upper inclined surface and the lower inclined surface of the flange 9 respectively, and at the same time the "V"-shaped groove 8 also generates a limit in the radius direction of the gear ring, according to the principle that three points determine a plane, the second gear ring 3 is positioned. Since the "V"-shaped groove 8 and the flange 9 of the second gear ring 3 are in line contact, compared with other solutions, it has a lower frictional resistance, can reduce the load of the driving motor, and makes the rotation of the second gear ring 3 more stable.

[0035] AsFigure 9 As shown Figure 9 Figure 9 shows a situation where two rotating members 7 are connected to the connecting member 6. The rotating members 7 include an upper roller 10 and a lower roller 11. Both the upper roller 10 and the lower roller 11 are rotatably connected to the connecting member 6. The upper roller 10 and the lower roller 11 both have a round table surface. The round table surfaces of the upper roller 10 and the lower roller 11 together form a "V"-shaped groove 8. Such a structure can adaptively adjust the "V"-shaped groove 8 according to the thickness of the flange 9 on the second gear ring 3.

[0036] As Figure 3 and Figure 7 Figure 7 shows that a stepped surface 12 is provided on the upper surface of the first gear ring 2. Two rotating members 7 are rotatably connected to each connecting member 6. One of the rotating members 7 is in rolling contact with the lower surface of the first gear ring 2 to form a supporting effect, and the other rotating member 7 is in rolling contact with the stepped surface 12 on the first gear ring 2 to form a positioning function.

[0037] A positioning rod 13 is adjustably connected to the connecting member 6. The positioning rod 13 is connected to the connecting member 6 through a positioning bolt 14. The rotating member 7 rotates freely at the end of the positioning rod 13.

[0038] As Figure 7 Figure 7 shows that the connecting member 6 is provided with a penetration hole for the positioning rod 13 to pass through. A threaded hole is provided on the side wall of the penetration hole. The positioning rod 13 is tightened against the inner wall of the penetration hole by a positioning bolt 14 screwed into the threaded hole, constituting an adjustable connection between the connecting member 6 and the positioning rod 13.

[0039] It should be understood that the present utility model is mainly applicable to fields with low load-bearing requirements but high requirements for rotational stability, such as medical devices, inspection instruments, experimental instruments, etc. However, it does not exclude the possibility of the present utility model being applicable to other fields; the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

Claims

1. A compact multi-toothed ring independent rotation motion device, characterized in that, It includes a base body (1), a positioning component, a gear ring, and a driving mechanism (4). At least two groups of positioning components are connected to the base body (1). Each group of the positioning components includes at least three positioning mechanisms (5) located on the same circle. The positioning mechanisms (5) in the same group jointly limit a gear ring, and each gear ring is connected to a driving mechanism (4).

2. The compact multi-tooth ring independent rotation motion device according to claim 1, wherein Each of the positioning mechanisms (5) includes a connecting piece (6) and a rotating piece (7). The connecting piece (6) is connected to the base body (1), and the rotating piece (7) is rotatably connected to the connecting piece (6). The outer peripheral surface of the rotating piece (7) abuts against the gear ring.

3. A compact multi-tooth ring independent rotation motion device according to claim 2, characterized in that, The outer peripheral surface of the rotating piece (7) has an annular "V"-shaped groove (8). On the side surface of the gear ring facing away from the teeth, there is a flange (9) matching the "V"-shaped groove (8) on the outer peripheral surface of the rotating piece (7), and the flange (9) is in contact with the "V"-shaped groove (8).

4. A compact multi-tooth ring independent rotation motion device according to claim 3, characterized in that, The rotating piece (7) includes an upper roller (10) and a lower roller (11). Both the upper roller (10) and the lower roller (11) are rotatably connected to the connecting piece (6). The upper roller (10) and the lower roller (11) both have a conical surface, and the conical surfaces of the upper roller (10) and the lower roller (11) jointly form the "V"-shaped groove (8).

5. A compact multi-tooth ring independent rotation motion device according to claim 2, characterized in that, A stepped surface (12) is provided on the upper surface of the gear ring. Two rotating pieces (7) are rotatably connected to each connecting piece (6). One of the rotating pieces (7) is in rolling contact with the lower surface of the gear ring, and the other rotating piece (7) is in rolling contact with the stepped surface (12) on the gear ring.

6. A compact multi-tooth ring independent rotation motion device according to claim 2, characterized in that A positioning rod (13) is adjustably connected to the connecting piece (6). The positioning rod (13) is connected to the connecting piece (6) through a positioning bolt (14), and the rotating piece (7) freely rotates at the end of the positioning rod (13).

7. A compact multi-toothed ring independent rotation motion device according to claim 6, characterized in that, The connecting piece (6) is provided with a penetration hole for the positioning rod (13) to pass through. A threaded hole is provided on the side wall of the penetration hole. The positioning rod (13) is tightened against the inner wall of the penetration hole by a positioning bolt (14) screwed into the threaded hole, constituting the adjustable connection between the connecting piece (6) and the positioning rod (13).

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