A toy animal

Abstract

A toy animal includes a body part shell, a head part shell, a tail part shell, two front leg part shells and two rear leg part shells, a four-leg movement structure is arranged in the cavity of the body part shell, characterized in that the four-leg movement structure includes a front leg driving mechanism and a rear leg driving mechanism; the front leg driving mechanism includes a front driving motor, a front transmission gear set and a front leg driving shaft, the front leg driving shaft is left-right running and can rotate relative to the body part shell, the upper ends of the two front leg part shells are connected with the left and right ends of the front leg driving shaft respectively; the rear leg driving mechanism includes a rear driving motor, a rear transmission gear set and a rear leg driving shaft, the rear leg driving shaft is left-right running and can rotate relative to the body part shell, the upper ends of the two rear leg part shells are connected with the left and right ends of the rear leg driving shaft respectively; the lower end of the rear leg part shell is provided with a friction wheel which can rotate only in one direction. The toy animal can complete various different actions, has high interestingness and has relatively simple structure.

Description

Technical Field

[0001] This utility model relates to toys, specifically to a toy animal. Background Technology

[0002] Existing toy animals (animal-shaped toys) mimic animals in appearance, such as dogs, cats, and tigers, and most of them can perform simple movements such as moving forward and backward, which is a low degree of animal simulation.

[0003] Authorization Announcement No. CN 209108598 A Chinese utility model patent specification discloses a multi-mode movement structure for a four-legged animal toy, including a gearbox. At both ends of the gearbox are respectively provided a motor gear set for driving an eccentric wheel and a motor gear set for driving a rocker arm. The motor gear set for driving the eccentric wheel meshes with a front eccentric wheel drive gear, which meshes with a transmission gear set. The transmission gear set meshes with a rear eccentric wheel drive gear. One end of the central shaft of the front eccentric wheel drive gear is connected to a left front eccentric cam via a left front eccentric wheel phase adjustment transmission component. The left front eccentric cam is installed inside the left front calf. The other end of the central shaft of the front eccentric wheel drive gear is provided with a right front eccentric cam, which is installed inside the right front calf. One side of the central shaft of the rear eccentric wheel drive gear is connected to a left rear eccentric cam via a left rear eccentric wheel phase adjustment component. The left rear eccentric cam is installed inside the left rear calf. The other side of the central shaft of the rear eccentric wheel drive gear... A right rear foot eccentric cam is provided, which is installed inside the right rear foot. The end of the gear set of the motor driving the swing arm is engaged with a left rear foot swing arm transmission component. One end of the left rear foot swing arm transmission component is provided with a left rear foot swing arm, which is fixedly connected to the left rear foot. The other end of the left rear foot swing arm transmission component is provided with a right rear foot swing arm transmission component, one end of which is provided with a right rear foot swing arm, which is fixedly connected to the right rear foot. The left rear foot swing arm transmission component is fixedly connected to the left front foot. One end of the left rear foot swing arm transmission component is also equipped with a front and rear swing arm transmission component, and the other end of the front and rear swing arm transmission component is equipped with a left front foot swing arm. The left front foot swing arm is fixedly connected to the left front foot. The other end of the left front foot swing arm transmission component is equipped with a right front foot swing arm transmission component, and one end of the right front foot swing arm transmission component is equipped with a right front foot swing arm. The right front foot swing arm is fixedly connected to the right front foot.

[0004] The multiple ways the four legs of these four-legged animal toys can enable the toy animals to perform a variety of different actions, which improves the realism and fun of the toy animals' movements. However, their structure, especially the structure of the transmission mechanism (including the transmission structure that drives the eccentric wheel and the transmission structure that drives the pendulum), is relatively complex. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a toy animal that can perform various actions such as moving forward, standing upside down, sitting, and doing push-ups. This toy animal is highly entertaining and has a relatively simple structure. The technical solution adopted is as follows:

[0006] A toy animal includes a body shell, a head shell, a tail shell, two front leg shells, and two hind leg shells. The head shell is installed at the front end of the body shell, and the tail shell is installed at the rear end. The two front leg shells are located on the left and right sides of the front portion of the body shell, and the two hind leg shells are located on the left and right sides of the rear portion of the body shell. A four-legged movement structure is provided within the cavity of the body shell. The four-legged movement structure includes a front leg drive mechanism and a hind leg drive mechanism. The front leg drive mechanism includes a front drive motor, a front transmission gear set, and a front leg drive shaft. The front leg drive shaft is... The rear leg drive mechanism includes a rear drive motor, a rear transmission gear set, and a rear leg drive shaft. The rear leg drive shaft is oriented left and right and can rotate relative to the body shell. The power output shaft of the rear drive motor is connected to the rear leg drive shaft via the rear transmission gear set. The upper ends of the two rear leg shells are connected to the left and right ends of the rear leg drive shaft, respectively. The lower end of the rear leg shell is equipped with a friction wheel that can only rotate in one direction.

[0007] The friction wheel located at the lower end of the rear leg shell can only rotate in one direction. Specifically, when the friction wheel is in contact with the support surface, the part of the friction wheel in contact with the support surface can only rotate backward around the wheel axis (for example, when the two rear leg shells move forward with the body shell, or when the two rear leg shells swing forward relative to the body shell, the part of the friction wheel in contact with the support surface can rotate backward around the wheel axis), and cannot rotate forward (for example, when the rear leg drive mechanism drives the two rear leg shells to swing backward, the friction wheel cannot rotate).

[0008] By installing friction wheels that can only rotate in one direction at the lower end of the rear leg shells, the following technical effects are achieved: when the rear leg drive mechanism drives the two rear leg shells to swing backward, the friction wheels cannot rotate, which increases the friction between the lower ends of the two rear leg shells and the supporting surface; when the two rear leg shells move forward with the body shell, or when the two rear leg shells swing forward relative to the body shell, the friction wheels can rotate, which reduces the friction between the lower ends of the two rear leg shells and the supporting surface.

[0009] Taking the forward movement of a toy animal as an example: When the hind leg drive mechanism drives the two hind leg shells to swing backward, the front leg drive mechanism can pause, and the friction wheel at the lower end of the hind leg shell will not rotate (the part of the friction wheel in contact with the support surface cannot rotate forward). The friction between the friction wheel and the support surface is relatively large, so when the two hind leg shells swing backward, they will push the body shell and the two front leg shells to move forward smoothly on the support surface. When the front leg drive mechanism drives the two front leg shells to swing backward, the hind leg drive mechanism can pause, and when the two front leg shells swing backward, they will drag... The moving body shell and the two hind leg shells move forward together. The friction wheels at the lower end of the hind leg shells can roll (the part of the friction wheel that contacts the support surface can rotate backward around the wheel axis) to reduce the friction between the lower end of the two hind leg shells and the support surface, allowing the two hind leg shells to move forward smoothly on the support surface. Then, the front leg drive mechanism drives the two front leg shells to swing forward, and at the same time, the hind leg drive mechanism drives the two hind leg shells to swing forward, and the two front leg shells and the two hind leg shells return to their original posture. The above process is repeated, which allows the toy animal to move forward continuously.

[0010] In a preferred embodiment, the bottom of the rear leg housing is provided with a first through hole, the friction wheel is located in the first through hole, and a portion of the friction wheel extends to the lower side of the first through hole; the lower end of the rear leg housing is provided with two guide grooves arranged side by side, both guide grooves are located above the first through hole, and the guide grooves extend in the front-rear direction, with both ends of the axle of the friction wheel located in the two guide grooves respectively; when both ends of the axle of the friction wheel reach the rear end of the two guide grooves respectively, there is a gap between the friction wheel and the hole wall of the first through hole; when both ends of the axle of the friction wheel reach or approach the front end of the two guide grooves respectively, the friction wheel is tightly fitted with the front hole wall of the first through hole. Taking the forward movement of a toy animal as an example: When the front leg drive mechanism drives the two front leg shells to swing backward, the rear leg drive mechanism can pause. When the two front leg shells swing backward, they drag the body shell and the two rear leg shells forward together. Under the action of the support surface, the friction wheel moves backward along the guide groove. The two ends of the axle of the friction wheel move to the rear end of the two guide grooves respectively. Since there is a gap between the friction wheel and the wall of the first through hole, the friction wheel can rotate (roll) around its axle. When the rear leg drive mechanism drives the two rear leg shells to swing backward, the front leg drive mechanism can pause. Under the action of the support surface, the friction wheel moves forward along the guide groove. When the two ends of the axle of the friction wheel reach or approach the front end of the two guide grooves respectively, the friction wheel is tightly engaged with the front wall of the first through hole (e.g., tight contact or snap-fit). The resistance generated by the tight engagement prevents the friction wheel from rotating.

[0011] In a preferred embodiment, the outer circumferential surface of the friction wheel is provided with a pattern. This pattern is used to enhance the friction between the friction wheel and the front wall of the first through hole, and between the friction wheel and the support surface, or other forms of resistance.

[0012] In a more preferred embodiment, the pattern on the outer circumferential surface of the friction wheel consists of alternating axial strip-shaped protrusions and axial strip-shaped grooves arranged circumferentially on the friction wheel. When both ends of the friction wheel axle reach or approach the front ends of the two guide grooves, a certain axial strip-shaped groove on the friction wheel can engage with the front side wall of the first through hole. When both ends of the friction wheel axle reach or approach the front ends of the two guide grooves, the front side wall of the first through hole can be embedded in a certain axial strip-shaped groove, forming a snap-fit ​​engagement, and the resulting resistance can prevent the friction wheel from rotating.

[0013] In a preferred embodiment, the aforementioned four-legged motion structure further includes a motion structure housing, which is fixedly installed within the cavity of the torso housing. Both the front and rear transmission gear sets are installed within the motion structure housing. The front and rear drive motors are fixedly installed within the motion structure housing or on its outer wall. Both the front and rear leg drive shafts are rotatably mounted on the motion structure housing. The four-legged motion structure can be installed as a single unit within the cavity of the torso housing, facilitating assembly.

[0014] In one specific embodiment, the first stage gear of the aforementioned front transmission gear set is mounted on the power output shaft of the front drive motor, and the last stage gear of the front transmission gear set is mounted on the front leg drive shaft; the first stage gear of the rear transmission gear set is mounted on the power output shaft of the rear drive motor, and the last stage gear of the rear transmission gear set is mounted on the rear leg drive shaft.

[0015] In the preferred embodiment, the cross-sectional shape of the aforementioned front leg drive shaft and rear leg drive shaft is a regular polygon (e.g., a square, a regular hexagon, or an equilateral triangle).

[0016] In the preferred embodiment, the aforementioned four-legged motion structure further includes a circuit board, a front potentiometer, and a rear potentiometer. Both the front and rear potentiometers are rotary potentiometers. The circuit board is installed within the cavity of the body shell and is equipped with a control circuit. The front and rear potentiometers are electrically connected to their respective input terminals of the control circuit, and the front and rear drive motors are electrically connected to their respective output terminals of the control circuit. The front potentiometer detects the rotation angle of the front leg drive shaft and transmits the signal to the control circuit, while the rear potentiometer detects the rotation angle of the rear leg drive shaft and transmits the signal to the control circuit. The change in resistance value of the rotary potentiometer corresponds to the rotation angle; by acquiring the resistance change data of the rotary potentiometer, the corresponding rotation angle data can be obtained. The control circuit sends control signals to operate the front drive motor and / or the rear drive motor. The front drive motor drives the two front leg shells to rotate around the front leg drive shaft via the front transmission gear set and the front leg drive shaft. The rear drive motor drives the two rear leg shells to rotate around the rear leg drive shaft via the rear transmission gear set and the rear leg drive shaft. When the front potentiometer detects that the front leg drive shaft has rotated to a predetermined angle, it sends a signal to the control circuit, which then sends a control signal to stop the front drive motor. Similarly, when the rear potentiometer detects that the rear leg drive shaft has rotated to a predetermined angle, it sends a signal to the control circuit, which then sends a control signal to stop the rear drive motor. In this way, through the coordination of the control circuit, the front potentiometer, the front drive motor, the rear potentiometer, and the rear drive motor, precise control and adjustment of the movement and angle of the two front leg shells and the two rear leg shells are achieved, thereby enabling motion control and posture adjustment of the toy animal.

[0017] In a more preferred embodiment, the aforementioned four-legged motion structure further includes a motion structure housing, a front potentiometer connecting shaft, and a rear potentiometer connecting shaft. The motion structure housing is fixedly installed in the cavity of the body housing. Both the front and rear transmission gear sets are installed in the motion structure housing. The front and rear drive motors are fixedly installed in the motion structure housing or on the outer wall of the motion structure housing. The front leg drive shaft, rear leg drive shaft, front potentiometer connecting shaft, and rear potentiometer connecting shaft are all rotatably mounted on the motion structure housing. Both the front and rear potentiometers are fixedly installed on the outer wall of the motion structure housing. The front potentiometer connecting shaft is parallel to the front leg drive shaft. The front potentiometer connecting shaft is provided with a first transmission gear, and the front leg drive shaft is provided with a second transmission gear that meshes with the first transmission gear. The knob of the front potentiometer is coaxially connected to the front potentiometer connecting shaft. The rear potentiometer connecting shaft is parallel to the rear leg drive shaft. The rear potentiometer connecting shaft is provided with a third transmission gear, and the rear leg drive shaft is provided with a fourth transmission gear that meshes with the third transmission gear. The knob of the rear potentiometer is coaxially connected to the rear potentiometer connecting shaft. More preferably, the transmission ratio between the first transmission gear and the second transmission gear is 1, and the transmission ratio between the third transmission gear and the fourth transmission gear is 1.

[0018] In addition, the knob of the front potentiometer can also be coaxially connected to the power output shaft of the front drive motor, the axle of any gear in the front transmission gear set, or the front leg drive shaft to directly or indirectly detect the angular position of the front leg drive shaft; the knob of the rear potentiometer can also be coaxially connected to the power output shaft of the rear drive motor, the axle of any gear in the rear transmission gear set, or the rear leg drive shaft to directly or indirectly detect the angular position of the rear leg drive shaft.

[0019] In a more preferred embodiment, the toy animal further includes a remote control capable of sending remote control signals. The circuit board also includes a remote control signal receiving module for receiving these signals, which is electrically connected to the corresponding input terminal of the control circuit. After the remote control sends a remote control signal (such as forward, upside down, sit, or push-up), the remote control signal receiving module receives the signal and transmits it to the control circuit. The control circuit processes the signal and sends a control signal to operate the front drive motor and / or the rear drive motor, causing the toy animal to perform the corresponding action.

[0020] In the preferred embodiment, the aforementioned four-legged movement structure further includes four leg connecting components, which respectively mate with the upper ends of the two front leg shells and the two rear leg shells. Each leg connecting component includes a circular leg turntable, a leg positioning shaft, and a leg insertion block. These components are integrally formed and arranged sequentially from the inside out. The leg positioning shaft runs horizontally and has a circular cross-section. The circular leg turntable coincides with the axis of the leg positioning shaft. A position on the torso shell corresponding to the leg positioning shaft is provided... The device features circular positioning holes, within which the leg positioning shafts are located and can rotate relative to the holes. A circular leg turntable is situated within the cavity of the body shell. First insertion holes are provided at the upper ends of the two front leg shells and the two rear leg shells, respectively, into which leg insertion blocks are embedded (after embedding, the leg insertion blocks can be locked to the upper ends of the front or rear leg shells using screws). A second insertion hole is provided on the inner surface of the circular leg turntable, into which the left and right ends of the front and rear leg drive shafts respectively engage with the second insertion holes on the corresponding leg connecting components. The leg connecting components further stabilize the connection points between the upper ends of the front leg shells and the front leg drive shafts, as well as the connection points between the upper ends of the rear leg shells and the rear leg drive shafts. The circular leg turntable prevents the leg connecting components from detaching from the body shell.

[0021] In one specific embodiment, the head shell is fixedly installed at the front end of the body shell, and the tail shell is fixedly installed at the rear end of the body shell. In other words, the head shell and tail shell remain in the same position on the body shell.

[0022] In a preferred embodiment, support protrusions are provided on the rear sides of the two hind leg shells. The support protrusions serve as contact points between the toy animal and the support surface.

[0023] This invention utilizes a front transmission gear set to transmit power between the front drive motor and the front leg drive shaft, and a rear transmission gear set to transmit power between the rear drive motor and the hind leg drive shaft. This results in a simple toy animal structure and low manufacturing cost. Furthermore, by incorporating unidirectional rotating friction wheels at the lower end of the hind leg shells, the friction between the lower ends of the two hind leg shells and the supporting surface can be adaptively adjusted, making movements smoother. This toy animal can perform various actions such as moving forward, standing upside down, sitting, and doing push-ups, making it highly entertaining. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the four-legged movement structure in cooperation with the front leg shell and the rear leg shell in a preferred embodiment of this utility model;

[0026] Figure 3 This is a schematic diagram of the four-legged movement structure in a preferred embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the friction wheel and related structures in a preferred embodiment of the present invention (the friction wheel is in a state where it can rotate).

[0028] Figure 5 This is a schematic diagram of the friction wheel and related structures in a preferred embodiment of the present invention (the friction wheel cannot rotate).

[0029] Figure 6 This is a schematic diagram of the posture of the toy animal in its initial state according to a preferred embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of a toy animal in an inverted state according to a preferred embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of a toy animal in a sitting position according to a preferred embodiment of the present invention;

[0032] Figure 9 This is a schematic diagram of a toy animal performing a push-up action according to a preferred embodiment of the present invention. Detailed Implementation

[0033] like Figures 1 to 3As shown, this toy animal includes a body shell 1, a head shell 2, a tail shell 3, two front leg shells 4, and two hind leg shells 5. The head shell 2 is installed at the front end of the body shell 1, the tail shell 3 is installed at the rear end of the body shell 1, the two front leg shells 4 are located on the left and right sides of the front part of the body shell 1, and the two hind leg shells 5 are located on the left and right sides of the rear part of the body shell 1. The body shell 1 has a four-legged movement structure 6 in its cavity. The four-legged motion structure 6 includes a front leg drive mechanism 61 and a rear leg drive mechanism 62. The front leg drive mechanism 61 includes a front drive motor 611, a front transmission gear set 612, and a front leg drive shaft 613. The front leg drive shaft 613 runs left and right and can rotate relative to the body shell 1. The power output shaft of the front drive motor 611 is connected to the front leg drive shaft 613 via the front transmission gear set 612. The upper ends of the two front leg shells 4 are respectively connected to the left and right ends of the front leg drive shaft 613. The rear leg drive mechanism 62 includes a rear drive motor 621, a rear transmission gear set 622, and a rear leg drive shaft 623. The rear leg drive shaft 623 runs left and right and can rotate relative to the body shell 1. The power output shaft of the rear drive motor 621 is connected to the rear leg drive shaft 623 via the rear transmission gear set 622. The upper ends of the two rear leg shells 5 are respectively connected to the left and right ends of the rear leg drive shaft 623. The lower end of the rear leg shell 5 is equipped with a friction wheel 7 that can only rotate in one direction.

[0034] refer to Figure 4 and Figure 5 In this embodiment, the bottom of the rear leg housing 5 is provided with a first through hole 51, the friction wheel 7 is located in the first through hole 51, and a portion of the friction wheel 7 extends to the lower side of the first through hole 51; the lower end of the rear leg housing 5 is provided with two guide grooves 52 arranged side by side, both guide grooves 52 are located above the first through hole 51, the guide grooves 52 extend in the front-rear direction, and the two ends of the wheel axle 72 of the friction wheel 7 are respectively located in the two guide grooves 52; Reference Figure 4 When the two ends of the axle 72 of the friction wheel reach the rear ends of the two guide grooves 72 respectively, there is a gap between the friction wheel 7 and the wall of the first through hole 51 (there are gaps between the friction wheel 7 and the front wall of the first through hole 51, and between the friction wheel 7 and the rear wall of the first through hole 51, allowing the friction wheel 7 to rotate within the first through hole 51); Reference Figure 5 When the two ends of the axle 72 of the friction wheel reach or approach the front ends of the two guide grooves 52, the friction wheel 7 tightly engages with the front wall 53 of the first through hole 51. The outer circumferential surface of the friction wheel 7 is patterned, consisting of alternating axial strip-shaped protrusions 73 and axial strip-shaped grooves 74 arranged circumferentially on the friction wheel 7. (Reference) Figure 5When the two ends of the axle 72 of the friction wheel reach or approach the front end of the two guide grooves 52 respectively, a certain axial strip groove 74 on the friction wheel 7 can engage with the front side wall 53 of the first through hole 51 (the front side wall 53 of the first through hole is embedded in a certain axial strip groove 74 to form an engagement).

[0035] The four-legged motion structure 6 also includes a circuit board 63, a front potentiometer 64, and a rear potentiometer 65. Both the front potentiometer 64 and the rear potentiometer 65 are rotary potentiometers. The circuit board 63 is installed in the cavity of the body shell 1. The circuit board 63 is equipped with a control circuit. The front potentiometer 64 and the rear potentiometer 65 are electrically connected to the corresponding input terminals of the control circuit. The front drive motor 611 and the rear drive motor 621 are electrically connected to the corresponding output terminals of the control circuit. The front potentiometer 64 is used to detect the rotation angle of the front leg drive shaft 613 and transmit the signal to the control circuit. The rear potentiometer 65 is used to detect the rotation angle of the rear leg drive shaft 623 and transmit the signal to the control circuit. In this embodiment, the four-legged motion structure 6 further includes a motion structure housing 66, a front potentiometer connecting shaft 67, and a rear potentiometer connecting shaft 68. The motion structure housing 66 is fixedly installed in the cavity of the body housing 1. The front transmission gear set 612 and the rear transmission gear set 622 are both installed in the motion structure housing 66. The front drive motor 611 and the rear drive motor 621 are fixedly installed on the outer wall of the motion structure housing 66 (the front drive motor 611 and the rear drive motor 621 can also be fixedly installed in the motion structure housing 66). The front leg drive shaft 613, the rear leg drive shaft 623, the front potentiometer connecting shaft 67, and the rear potentiometer connecting shaft 68 can all be rotatably installed on the motion structure housing 66. The front potentiometer 64 and the rear... Potentiometers 65 are all fixedly mounted on the outer wall of the moving structure housing 66. The front potentiometer connecting shaft 67 is parallel to the front leg drive shaft 613. A first transmission gear 691 is provided on the front potentiometer connecting shaft 67, and a second transmission gear 692 meshing with the first transmission gear 691 is provided on the front leg drive shaft 613. The knob of the front potentiometer 64 is coaxially connected to the front potentiometer connecting shaft 67. The rear potentiometer connecting shaft 68 is parallel to the rear leg drive shaft 623. A third transmission gear 693 is provided on the rear potentiometer connecting shaft 68, and a fourth transmission gear 694 meshing with the third transmission gear 693 is provided on the rear leg drive shaft 623. The knob of the rear potentiometer 65 is coaxially connected to the rear potentiometer connecting shaft 68. The transmission ratio between the first transmission gear 691 and the second transmission gear 692 is 1, and the transmission ratio between the third transmission gear 693 and the fourth transmission gear 694 is 1.

[0036] In this embodiment, the first stage gear 6121 of the front transmission gear set 612 is mounted on the power output shaft of the front drive motor 611, and the last stage gear 6122 of the front transmission gear set 612 is mounted on the front leg drive shaft 613; the first stage gear 6221 of the rear transmission gear set 622 is mounted on the power output shaft of the rear drive motor 621, and the last stage gear 6222 of the rear transmission gear set 622 is mounted on the rear leg drive shaft 623.

[0037] The cross-sectional shape of the front leg drive shaft 613 and the rear leg drive shaft 623 is a regular polygon (e.g., a square).

[0038] The four-legged movement structure 6 also includes four leg connecting parts 610, which respectively mate with the upper ends of the two front leg shells 4 and the upper ends of the two rear leg shells 5. Each leg connecting part 610 includes a circular leg turntable 6101, a leg positioning shaft 6102, and a leg insertion block 6103. These components are integrated and arranged sequentially from the inside out. The leg positioning shaft 6102 runs horizontally and has a circular cross-section. The axes of the circular leg turntable 6101 and the leg positioning shaft 6102 coincide. A circular positioning hole is provided on the torso shell 1 at a position corresponding to the leg positioning shaft 6102 (the torso shell 1 includes an upper torso shell and a lower torso shell). The circular positioning hole is formed by an upper semi-circular notch on the upper shell of the torso and a lower semi-circular notch on the lower shell of the torso. The leg positioning pivot 6102 is located in the circular positioning hole and can rotate relative to the circular positioning hole. The circular leg turntable 6101 is located in the cavity of the torso shell 1. The upper ends of the two front leg shells 4 and the upper ends of the two rear leg shells 5 are respectively provided with first insertion holes 6104. The leg insertion block 6103 is embedded in the corresponding first insertion hole 6104 (after being embedded, the leg insertion block 6103 can be locked to the upper end of the front leg shell 4 or the upper end of the rear leg shell 5 by screws). The inner side of the circular leg turntable 6101 is provided with a second insertion hole 6105. The left and right ends of the front leg drive shaft 613 and the left and right ends of the rear leg drive shaft 615 are respectively inserted into the second insertion hole 6105 on the corresponding leg connecting component 610.

[0039] The toy animal in this embodiment also includes a remote control capable of sending remote control signals. The circuit board 63 is also provided with a remote control signal receiving module for receiving remote control signals. The remote control signal receiving module is electrically connected to the corresponding input terminal of the control circuit.

[0040] The head shell 2 is fixedly installed at the front end of the body shell 1, and the tail shell 3 is fixedly installed at the rear end of the body shell 1. The head shell 2 can serve as one of the support points when the toy animal is upside down. The tail shell 3 can serve as one of the support points when the toy animal is upright.

[0041] Each of the two rear leg housings 5 ​​has a support protrusion 54 on its rear side.

[0042] The following is a brief description of the movement principle of this toy animal:

[0043] refer to Figure 4 and Figure 5 The friction wheel 7, located at the lower end of the rear leg housing 5, can only rotate in one direction. Specifically, when the friction wheel 7 is in contact with the support surface 100, the portion 71 of the friction wheel 7 in contact with the support surface 100 can only rotate backward around the axle 72 of the friction wheel 7, and cannot rotate forward. For example, when the two rear leg housings 5 ​​move forward with the body housing 1, or when the two rear leg housings 5 ​​swing forward relative to the body housing 1, the two ends of the axle 72 of the friction wheel reach the rear ends of the two guide grooves 72 respectively. There is a gap between the friction wheel 7 and the wall of the first through hole 51, and the portion 71 of the friction wheel 7 in contact with the support surface 100 can rotate backward around the axle 72 of the friction wheel (rotation direction as shown in the figure). Figure 4 (As shown by the arrow in the image) When the rear leg drive mechanism 62 drives the two rear leg housings 5 ​​to swing backward, the two ends of the axle 72 of the friction wheel reach or approach the front end of the two guide grooves 52 respectively, and a certain axial strip groove 74 on the friction wheel 7 can engage with the front side wall 53 of the first through hole 51, so the friction wheel 7 cannot rotate.

[0044] After the remote control sends a remote control signal (such as forward, upside down, upright, sit down or push-up, etc., with corresponding buttons on the remote control), the remote control signal receiving module receives the remote control signal and transmits it to the control circuit. After processing, the control circuit sends a control signal to make the front drive motor 611 and / or the rear drive motor 621 run, so that the toy animal can make the corresponding movements.

[0045] The control circuit sends a control signal to operate the front drive motor 611 and / or the rear drive motor 621. The front drive motor 611 drives the two front leg housings 4 to rotate around the front leg drive shaft 613 via the front transmission gear set 612 and the front leg drive shaft 613. The rear drive motor 621 drives the two rear leg housings 5 ​​to rotate around the rear leg drive shaft 623 via the rear transmission gear set 622 and the rear leg drive shaft 623. When the front potentiometer 64 detects that the front leg drive shaft 613 has rotated to a predetermined angle, it sends a signal to the control circuit, which then sends a control signal to stop the front drive motor 611. When the rear potentiometer 65 detects that the rear leg drive shaft 623 has rotated to a predetermined angle, it sends a signal to the control circuit, which then sends a control signal to stop the rear drive motor 621. In this way, through the cooperation of the control circuit, the front potentiometer 64, the front drive motor 611, the rear potentiometer 65 and the rear drive motor 621, the precise control and adjustment of the movement and angle of the two front leg shells 4 and the two rear leg shells 5 can be achieved, thereby enabling motion control and posture adjustment of the toy animal.

[0046] refer to Figure 6 In the initial state, the lower ends of the two front leg shells 4 and the two hind leg shells 5 are in contact with the support surface 100. The two front leg shells 4 and the two hind leg shells 5 of the toy animal are roughly perpendicular to the body shell 1 and together support the body shell 1.

[0047] The process of the toy animal moving forward is as follows: Starting from the initial state, firstly, the hind leg drive mechanism 62 drives the two hind leg shells 5 to swing backward. At this time, the front leg drive mechanism 61 pauses, and the friction wheel 7 at the lower end of the hind leg shell 5 does not rotate (see reference). Figure 5 (The part 71 on the friction wheel 7 that contacts the support surface 100 cannot rotate forward.) The friction between the friction wheel 7 and the support surface 100 is relatively large. When the two rear leg shells 5 swing backward, they will push the body shell 1 and the two front leg shells 4 together to move forward smoothly on the support surface 100. Then, the front leg drive mechanism 61 drives the two front leg shells 4 to swing backward. At this time, the rear leg drive mechanism 62 stops. When the two front leg shells 4 swing backward, they will drag the body shell 1 and the two rear leg shells 5 forward together. The friction wheel 7 at the lower end of the rear leg shell 5 can roll (see reference). Figure 4 The part 71 on the friction wheel 7 that contacts the support surface can rotate backward around the wheel axis of the friction wheel to reduce the friction between the lower ends of the two hind leg shells 5 and the support surface 100; then the two front leg shells 4 are driven forward by the front leg drive mechanism 61 and the two hind leg shells 5 are driven forward by the rear leg drive mechanism 62 at the same time, and the two front leg shells 4 and the two hind leg shells 5 return to their initial posture; the above process is repeated, which can make the toy animal move forward continuously.

[0048] The process of the toy animal performing an inverted movement is as follows: Starting from the initial state, firstly, the front leg drive mechanism 61 drives the two front leg shells 4 to swing backward with a large amplitude relative to the body shell 1 (at this time, the hind leg drive mechanism 62 pauses), causing the front part of the body shell 1 to tilt downward with the lower ends of the two hind leg shells 5 as fulcrums, and the head shell 2 or the front end of the body shell 1 to contact the support surface 100; then, the front leg drive mechanism 61 drives the two front leg shells 4 to swing forward with a large amplitude relative to the body shell 1, as shown in the reference... Figure 7 At this point, the lower ends of the two front leg shells 4 and the head shell 2 are in contact with the support surface 100, while the two hind leg shells 5 are away from the support surface 100, putting the toy animal in an upside-down position. When the toy animal is in an upside-down position, the two hind leg shells 5 can be driven by the hind leg drive mechanism 62 to swing back and forth, increasing the fun of the action.

[0049] The process of the toy animal performing a push-up is as follows: Starting from the initial state, firstly, the hind leg drive mechanism 62 drives the two hind leg shells 5 to swing backward, and the front leg drive mechanism 61 drives the two front leg shells 4 to swing forward, causing a large angle to open between the front leg shells 4 and the hind leg shells 5. (Refer to...) Figure 9 Subsequently, the hind leg drive mechanism 62 pauses, and the front leg drive mechanism 61 drives the two front leg shells 4 to swing back and forth in a small amplitude. Each time the two front leg shells 4 swing back and forth, the toy animal completes a push-up.

[0050] The process of the toy animal sitting down is as follows: Starting from the initial state, the hind leg drive mechanism 62 drives the two hind leg shells 5 to swing forward with a large amplitude relative to the body shell 1 (at this time, the front leg drive mechanism 61 is paused), causing the rear of the body shell 1 to tilt downward with the lower ends of the two front leg shells 4 as the fulcrum; when the support protrusions 54 on the rear side of the two hind leg shells 5 contact the support surface 100, the body shell 1 swings backward with the support protrusions 54 as the fulcrum, and the rear end of the body shell 1 and the support protrusions 54 on the rear side of the two hind leg shells 5 both contact the support surface 100, while the two front leg shells 4 leave the support surface 100, so that the toy animal is in a sitting state. (Refer to...) Figure 8 When the toy animal is in a sitting position, the front leg drive mechanism 61 can drive the two front leg shells 4 to swing back and forth, increasing the fun of the movement. In addition, when the toy animal is in a sitting position, the hind leg drive mechanism 62 drives the two hind leg shells 5 to swing slightly, so that the support protrusions 54 on the rear side of the two hind leg shells 5 and the lower ends of the two hind leg shells 5 contact the support surface 100, while the rear end of the toy animal's body shell 1 moves away from the support surface 100, so that the toy animal is in a squatting position.

[0051] The process of the toy animal standing upright is as follows: starting from when the toy animal is in a sitting position, the hind leg drive mechanism 62 drives the two hind leg shells 5 to swing backward relative to the body shell 1. When the tail shell 3 and the lower ends of the two hind leg shells 5 contact the support surface 100, the toy animal is in an upright position.

[0052] In other solutions, the knob of the front potentiometer can also be coaxially connected to the power output shaft of the front drive motor, the axle of any gear in the front transmission gear set, or the front leg drive shaft to directly or indirectly detect the angular position of the front leg drive shaft; the knob of the rear potentiometer can also be coaxially connected to the power output shaft of the rear drive motor, the axle of any gear in the rear transmission gear set, or the rear leg drive shaft to directly or indirectly detect the angular position of the rear leg drive shaft.

Claims

1. A toy animal comprising a body shell, a head shell, a tail shell, two front leg shells, and two hind leg shells, wherein the head shell is mounted at the front end of the body shell, the tail shell is mounted at the rear end of the body shell, the two front leg shells are respectively located on the left and right sides of the front portion of the body shell, and the two hind leg shells are respectively located on the left and right sides of the rear portion of the body shell, and the body shell cavity is provided with a four-legged movement structure, characterized in that: The four-legged movement structure comprises a front leg driving mechanism and a rear leg driving mechanism; the front leg driving mechanism comprises a front driving motor, a front transmission gear set and a front leg driving shaft, the front leg driving shaft is left-right oriented and can rotate relative to the body part shell, the power output shaft of the front driving motor is in transmission connection with the front leg driving shaft through the front transmission gear set, and the upper ends of the two front leg part shells are connected with the left and right ends of the front leg driving shaft respectively; the rear leg driving mechanism comprises a rear driving motor, a rear transmission gear set and a rear leg driving shaft, the rear leg driving shaft is left-right oriented and can rotate relative to the body part shell, the power output shaft of the rear driving motor is in transmission connection with the rear leg driving shaft through the rear transmission gear set, and the upper ends of the two rear leg part shells are connected with the left and right ends of the rear leg driving shaft respectively; the lower end of the rear leg part shell is provided with a friction wheel capable of rotating in one direction only.

2. The toy animal of claim 1, wherein: The bottom of the rear leg part shell is provided with a first through hole, the friction wheel is in the first through hole, and a part of the friction wheel extends to the lower side of the first through hole; the lower end of the rear leg part shell is provided with two guide grooves in parallel left and right, the two guide grooves are both on the upper side of the first through hole, the guide grooves extend in the front-rear direction, and the both ends of the wheel shaft of the friction wheel are respectively in the two guide grooves; when the both ends of the wheel shaft of the friction wheel respectively reach the rear ends of the two guide grooves, there is a gap between the friction wheel and the hole wall of the first through hole; when the both ends of the wheel shaft of the friction wheel respectively reach or are close to the front ends of the two guide grooves, the friction wheel is tightly matched with the front hole wall of the first through hole.

3. The toy animal of claim 2, wherein: The outer circumferential surface of the friction wheel is provided with a pattern.

4. The toy animal of claim 3, wherein: The pattern on the outer circumferential surface of the friction wheel is composed of axially strip-shaped protrusions and axially strip-shaped grooves arranged alternately in the circumferential direction of the friction wheel; when the both ends of the wheel shaft of the friction wheel respectively reach or are close to the front ends of the two guide grooves, a certain axially strip-shaped groove on the friction wheel can be in clamping cooperation with the front hole wall of the first through hole.

5. A toy animal according to any one of claims 1-4, characterised in that: The four-legged movement structure further comprises a movement structure shell, the movement structure shell is fixedly installed in the cavity of the body part shell, the front transmission gear set and the rear transmission gear set are both installed in the movement structure shell, the front driving motor and the rear driving motor are fixedly installed in the movement structure shell or on the outer wall of the movement structure shell, and the front leg driving shaft and the rear leg driving shaft are both rotatably installed on the movement structure shell.

6. A toy animal according to any one of claims 1-4, characterised in that: The cross-sectional shape of the front leg driving shaft and the rear leg driving shaft is a regular polygon.

7. A toy animal according to any one of claims 1-4, characterised in that: The four-legged movement structure further comprises a circuit board, a front potentiometer and a rear potentiometer, the front potentiometer and the rear potentiometer are both rotary potentiometers, the circuit board is installed in the cavity of the body part shell, the circuit board is provided with a control circuit, the front potentiometer and the rear potentiometer are respectively electrically connected with the corresponding input ends of the control circuit, the front driving motor and the rear driving motor are respectively electrically connected with the corresponding output ends of the control circuit, the front potentiometer is used for detecting the angle of rotation of the front leg driving shaft and transmitting signals to the control circuit, and the rear potentiometer is used for detecting the angle of rotation of the rear leg driving shaft and transmitting signals to the control circuit.

8. The toy animal of claim 7, wherein: The four-legged movement structure further comprises a movement structure shell, a front potentiometer connecting shaft and a rear potentiometer connecting shaft; the movement structure shell is fixedly installed in the cavity of the body part shell, the front transmission gear set and the rear transmission gear set are both installed in the movement structure shell, the front driving motor and the rear driving motor are fixedly installed in the movement structure shell or on the outer wall of the movement structure shell, and the front leg driving shaft, the rear leg driving shaft, the front potentiometer connecting shaft and the rear potentiometer connecting shaft are all rotatably installed on the movement structure shell; the front potentiometer and the rear potentiometer are both fixedly installed on the outer wall of the movement structure shell; the front potentiometer connecting shaft is parallel to the front leg driving shaft, the first transmission gear is arranged on the front potentiometer connecting shaft, the second transmission gear is arranged on the front leg driving shaft and is in mesh with the first transmission gear, and the knob of the front potentiometer is coaxially connected with the front potentiometer connecting shaft; the rear potentiometer connecting shaft is parallel to the rear leg driving shaft, the third transmission gear is arranged on the rear potentiometer connecting shaft, the fourth transmission gear is arranged on the rear leg driving shaft and is in mesh with the third transmission gear, and the knob of the rear potentiometer is coaxially connected with the rear potentiometer connecting shaft.

9. The toy animal of any of claims 1-4, characterized by: The four-legged movement structure further comprises four leg part connecting components, which are correspondingly matched with the upper ends of the two front leg part shells and the upper ends of the two rear leg part shells; the leg part connecting component comprises a circular leg part turntable, a leg part positioning shaft and a leg part plug-in block, and the circular leg part turntable, the leg part positioning shaft and the leg part plug-in block are integrally formed, sequentially arranged from inside to outside, and the leg part positioning shaft is in left-right direction and has a circular cross section, and the axis of the circular leg part turntable coincides with that of the leg part positioning shaft; the body part shell is provided with a circular positioning hole at a position corresponding to the leg part positioning shaft, the leg part positioning shaft is located in the circular positioning hole and can rotate relative to the circular positioning hole; the circular leg part turntable is located in the cavity of the body part shell; the upper ends of the two front leg part shells and the upper ends of the two rear leg part shells are respectively provided with first plug-in holes, and the leg part plug-in block is embedded in the corresponding first plug-in hole; the inner side surface of the circular leg part turntable is provided with a second plug-in hole, and the left and right ends of the front leg driving shaft and the left and right ends of the rear leg driving shaft are respectively plug-in matched with the second plug-in hole on the corresponding leg part connecting component.

10. The toy animal of any of claims 1-4, characterized by: The rear side surfaces of the two rear leg part shells are respectively provided with support protrusions.

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