Rotating mechanism of machine toy

Abstract

The utility model discloses a rotating mechanism of a machine toy, which comprises a machine body and a shell swinging relative to the machine body, two sides of the machine body are respectively provided with a left mounting hole and a right mounting hole, a right fixing shaft driven by a steering engine is rotatably mounted in the right mounting hole, and a left fixing shaft is mounted in the left mounting hole through a bearing. A flexible sleeve is installed between the bearing and the left installation hole, the two ends of the shell are U-shaped frames, the two ends of the shell are fixed to the right fixing shaft and the left fixing shaft respectively, when the installation position of a steering engine shaft of the steering engine is eccentric, the right fixing shaft is in the eccentric state as well, the shell and the left fixing shaft act on the bearing, the bearing is squeezed towards the eccentric side, and the steering engine shaft is driven to rotate. And finally, the axial lead of the bearing coincides with the axial lead of the steering engine shaft, the flexible sleeve provides a buffering effect, the stress of the steering engine shaft is reduced, and therefore the steering engine is protected, and the service life of the steering engine is prolonged.

Description

Technical Field

[0001] This utility model relates to a machine toy, and more particularly to a rotating mechanism for a machine toy. Background Technology

[0002] The applicant filed an application on July 3, 2023, for a head-turning mechanism for a robotic toy, which includes a nodding mechanism and a head-shaking mechanism. The nodding mechanism includes a housing and a connector with a U-shaped frame at the front end. The front end of the connector is mounted on the housing through a bearing seat. A second servo motor is installed inside the housing. The servo motor shaft of the second servo motor is connected to the bearing seat. By rotating the servo motor shaft, the housing can swing relative to the connector to achieve the nodding effect.

[0003] The applicant discovered that due to product tolerances, the servo shaft and bearing may not be on the same concentric axis during assembly, and the stress deviation may cause the servo shaft to be damaged due to prolonged stress. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a rotating mechanism for a machine toy.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A rotating mechanism for a robotic toy includes a main body and a housing that swings relative to the main body. The main body has a left mounting hole and a right mounting hole on its two sides. A right fixed shaft driven by a servo motor is rotatably mounted in the right mounting hole. A left fixed shaft is mounted in the left mounting hole via a bearing. A flexible sleeve is installed between the bearing and the left mounting hole. The two ends of the housing are U-shaped frames, and the two ends are fixed to the right fixed shaft and the left fixed shaft, respectively.

[0007] The body is composed of a first outer shell and a second outer shell, with a fixed base installed inside the second outer shell, and the servo motor is mounted on the fixed base.

[0008] The mounting base has symmetrical mounting posts on both sides, and the servo motor is fixed to the mounting posts by screws.

[0009] A positioning block is provided on the mounting post, and a positioning groove is provided on the servo motor corresponding to the positioning block, with the positioning block being embedded in the positioning groove.

[0010] Both sides of the first and second outer shells are provided with semi-circular holes, and the two semi-circular holes together form the left mounting hole and the right mounting hole.

[0011] The outer ends of the right and left fixed shafts are each provided with a number of circumferentially arranged insertion posts, and the housing is provided with insertion holes corresponding to the insertion posts, and the insertion posts are inserted into the insertion holes.

[0012] A limit ring is provided on the side of the left fixed shaft near the servo motor. The side wall of the left fixed shaft is provided with barbs arranged in a circumferential direction. The barbs and the limit ring form a locking groove, and the bearing is installed in the locking groove.

[0013] The left fixed shaft has a number of annularly arranged clearance grooves on its side wall along the axis. The left fixed shaft has a number of connecting strips that can deform in the direction of the clearance grooves. The barb is provided on the connecting strips.

[0014] The beneficial effects of this utility model are as follows: The utility model has a left mounting hole and a right mounting hole on both sides of the body. A right fixed shaft driven by a servo motor is rotatably mounted in the right mounting hole, and a left fixed shaft is mounted in the left mounting hole via a bearing. A flexible sleeve is installed between the bearing and the left mounting hole. The two ends of the housing are U-shaped frames, and both ends are fixed to the right and left fixed shafts respectively. When the servo motor shaft is misaligned, the right fixed shaft is also misaligned. Through the housing and the left fixed shaft, the bearing is pressed towards the misaligned side, causing the flexible sleeve to deform. Ultimately, the bearing's axis coincides with the servo motor shaft's axis. The flexible sleeve provides a buffering effect, reducing the force on the servo motor shaft, thereby protecting the servo motor and extending its service life. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a structural diagram of the present invention;

[0017] Figure 2 This is an exploded view of the present invention;

[0018] Figure 3 This is an exploded view of the servo motor and its mounting base;

[0019] Figure 4 This is a structural diagram of the left fixed shaft. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0021] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0022] The following describes some embodiments of the present invention with reference to the accompanying drawings.

[0023] Reference Figure 1-4 A rotating mechanism for a robotic toy includes a body 1 and a housing 2 that swings relative to the body 1. The body 1 has a left mounting hole and a right mounting hole on its two sides. A right fixed shaft 6, driven by a servo motor 5, is rotatably mounted in the right mounting hole. A left fixed shaft 8 is mounted in the left mounting hole via a bearing 7. A flexible sleeve 9 is installed between the bearing 7 and the left mounting hole. The housing 2 has U-shaped frames at both ends, which are respectively fixed to the right fixed shaft 6 and the left fixed shaft 8. When the servo motor 5's servo shaft is out of position... In the case of eccentricity, the right fixed shaft 6 is also eccentric, and the bearing 7 is pressed towards the eccentric side by the housing 2 and the left fixed shaft 8. This causes the flexible sleeve 9 to be deformed, and eventually the axis of the bearing 7 coincides with the axis of the servo shaft (ideally, the two axis lines coincide, but in practice, it is more likely to improve the concentricity). The flexible sleeve 9 provides a buffering effect, reducing the force on the servo shaft, thereby protecting the servo 5 and extending the service life of the servo 5.

[0024] The body 1 is composed of a first outer shell 10 and a second outer shell 11. A fixed base 12 is installed inside the second outer shell 11. The servo motor 5 is installed on the fixed base 12. Semicircular holes 16 are provided on both sides of the first outer shell 10 and the second outer shell 11. The two semicircular holes 16 together form the left mounting hole and the right mounting hole.

[0025] The mounting base 12 has symmetrical mounting posts 13 on both sides. The servo motor 5 is fixed to the mounting posts 13 by screws. The mounting posts 13 are provided with positioning blocks 14. The servo motor 5 is provided with positioning grooves 15 corresponding to the positioning blocks 14. The positioning blocks 14 are embedded in the positioning grooves 15, which further improves the installation position accuracy of the servo motor 5, reduces installation errors, and thus reduces the degree of eccentricity.

[0026] The outer ends of the right fixed shaft 6 and the left fixed shaft 8 are each provided with a plurality of circumferentially arranged insertion posts 17. The housing 2 is provided with insertion holes 18 corresponding to the insertion posts 17. The insertion posts 17 are inserted into the insertion holes 18. In this embodiment, there are 4 insertion posts 17, which are evenly distributed on the outer ends of the right fixed shaft 6 and the left fixed shaft 8. In addition, the number can also be 2, 3, etc.

[0027] Furthermore, one of the right fixed shaft 6 and the left fixed shaft 8 is provided with the insertion post 17, while the other is provided with the insertion hole 18. Correspondingly, one side of the housing 2 is provided with the insertion post 17 corresponding to the insertion hole 18, and the other side is provided with the insertion hole 18 corresponding to the insertion post 17, thus achieving the effect of reverse installation. When installed in reverse, the insertion post and the insertion hole are on the same side, making assembly impossible.

[0028] Furthermore, the housing 2 can also be fixed to the right fixed shaft 6 and the left fixed shaft 8 using countersunk screws, which provides even greater strength.

[0029] The housing 2 is equipped with end caps at the right fixed shaft 6 and the left fixed shaft 8 to cover them and improve aesthetics.

[0030] Furthermore, the shape of the end cap can be made to resemble animal ears, etc.

[0031] A limiting ring 19 is provided on the side of the left fixed shaft 8 near the servo motor 5. The side wall of the left fixed shaft 8 is provided with barbs 20 arranged circumferentially. The barbs 20 and the limiting ring 19 form a locking groove 21. The bearing 7 is installed in the locking groove 21. The side wall of the left fixed shaft 8 is provided with several annularly arranged clearance grooves 22. The left fixed shaft 8 is provided with several connecting strips 23 that can deform in the direction of the clearance grooves 22. The barbs 20 are provided on the connecting strips 23. When the bearing 7 is installed, it passes through the barbs 20 and presses the connecting strips 23 into the clearance grooves 22, thereby reducing the diameter of the barbs 20 and allowing the bearing 7 to pass smoothly. After the bearing 7 slides into the locking groove 21, the connecting strips 23 reset, so that the barbs 20 play a role in restricting the bearing 7 from exiting.

[0032] In this embodiment, the bearing 7 and the flexible sleeve 9 are used to adjust the concentricity, but a self-aligning ball bearing can also be used instead.

[0033] Self-aligning ball bearings consist of an outer ring, an inner ring, balls, and a cage. The inner ring has two deep-groove, continuous raceways to secure the balls and cage, providing a rolling track for the balls. The outer ring has a common concave spherical raceway with a smooth spherical surface and no other additional raceways. The center of curvature of the outer ring raceway surface of the self-aligning ball bearing coincides with the bearing center. When the shaft is subjected to bending or tilting, causing the centerline of the inner ring to tilt relative to the centerline of the outer ring by no more than 1°-3°, the contact position of the balls with the inner and outer ring raceways will automatically adjust, allowing the bearing to continue to function normally. This compensates for shaft misalignment caused by improper machining, installation, or deformation due to stress, reducing additional stress and wear inside the bearing.

[0034] In this invention, the term "multiple" refers to two or more items unless otherwise expressly defined. The term "and / or" as used herein includes any and all combinations of one or more of the related listed items. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0035] It should be noted that when a component is referred to as being "assembled on," "mounted on," "fixed to," or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0036] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A rotating mechanism of a machine toy comprising a body (1) and a housing (2) which oscillates with respect to the body (1), characterized in that The left mounting hole and the right mounting hole are arranged on the two sides of the body (1), the right fixed shaft (6) driven by the steering engine (5) is rotatably arranged in the right mounting hole, the left fixed shaft (8) is arranged in the left mounting hole through the bearing (7), the flexible sleeve (9) is arranged between the bearing (7) and the left mounting hole, and the two ends of the shell (2) are in the shape of a U-shaped frame and are fixed on the right fixed shaft (6) and the left fixed shaft (8) respectively.

2. The rotating mechanism of a machine toy according to claim 1, wherein The body (1) is composed of the first shell (10) and the second shell (11), the fixed seat (12) is arranged in the second shell (11), and the steering engine (5) is arranged on the fixed seat (12).

3. The rotating mechanism of a machine toy according to claim 2, wherein Symmetrical mounting columns (13) are arranged on the two sides of the fixed seat (12), and the steering engine (5) is fixed on the mounting columns (13) through screws.

4. The rotating mechanism of a machine toy according to claim 3, wherein Positioning blocks (14) are arranged on the mounting columns (13), and positioning grooves (15) corresponding to the positioning blocks (14) are arranged on the steering engine (5), and the positioning blocks (14) are embedded in the positioning grooves (15).

5. The rotating mechanism of the machine toy according to claim 2, wherein Half-round holes (16) are arranged on the two sides of the first shell (10) and the second shell (11), and the two half-round holes (16) form the left mounting hole and the right mounting hole.

6. The rotating mechanism of a machine toy according to claim 1, wherein A plurality of plug-in columns (17) are arranged on the outer end of the right fixed shaft (6) and the left fixed shaft (8) in the circumferential direction, plug-in holes (18) corresponding to the plug-in columns (17) are arranged on the shell (2), and the plug-in columns (17) are plugged into the plug-in holes (18).

7. The rotating mechanism of a machine toy according to claim 1, wherein A limiting ring (19) is arranged on the side of the left fixed shaft (8) close to the steering engine (5), a plurality of barb portions (20) are arranged on the side wall of the left fixed shaft (8) in the circumferential direction, the barb portions (20) and the limiting ring (19) form a clamping groove (21), and the bearing (7) is arranged in the clamping groove (21).

8. The rotating mechanism of a machine toy according to claim 7, wherein A plurality of avoidance grooves (22) arranged in a ring shape are arranged on the side wall of the left fixed shaft (8) along the axial line direction, a plurality of connecting strips (23) capable of deforming in the direction of the avoidance grooves (22) are arranged on the left fixed shaft (8) located in the avoidance grooves (22), and the barb portions (20) are arranged on the connecting strips (23).

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