Bionic frog based on cam spring mechanism

Abstract

The utility model discloses a bionic frog based on a cam spring mechanism, relates to the technical field of bionic frogs, and solves the problems that when the frog is used, the effect of instantly releasing stored energy is realized when a bearing moves to a linear groove, so that the frog can jump only after the stored energy is released, and the frog cannot jump. The problems that when a frog bounces, when the frog falls down, a shank inclined rod at the lower end is lifted upwards through a nylon rope, the shank inclined rod extrudes a spring on the upper portion, an upper leg inclined rod is pressed by the spring, and the position of the frog falling to the ground is unstable are easily caused are solved. The left shell and the right shell are connected in a fastened mode through a fixing bolt, a direct current motor is fixedly installed between the left shell and the right shell, through cooperation of a gear, a notch gear and the upper half leg, the position of the upper half leg can be conveniently limited, and the situation that when a frog falls to the ground, the frog bounces up due to a tensioning spring can be prevented.

Description

Technical Field

[0001] This utility model relates to the technical field of biomimetic frogs, specifically a biomimetic frog based on a cam spring mechanism. Background Technology

[0002] A biomimetic frog is a robot capable of operating in diverse environments. Frogs are amphibians with excellent jumping, swimming, and aquatic adaptability. Therefore, the biomimetic frog also possesses these characteristics. This project aims to develop a biomimetic frog based on a cam-spring mechanism, achieving basic jumping functionality at a relatively low cost. Its emergence has brought many benefits to human life and scientific research. Furthermore, introducing the biomimetic frog can popularize bionics knowledge to the public, allowing more people to understand and recognize its importance and application prospects. As a biomimetic robot, the biomimetic frog has broad application prospects, bringing numerous benefits to fields such as industry, military, medicine, and education.

[0003] A search revealed Chinese patent publication number CN222062134U, which discloses a biomimetic jumping frog. The support frame includes a tail end plate, side end plates, a top end plate, a head end plate, and a battery bracket. A cam drive mechanism, located on the tail end plate below the top end plate, includes a sliding energy storage component, a cam component, and a drive component, used to drive the frog to jump. A hind leg spring mechanism includes two symmetrically positioned hind legs on either side of the tail end plate, used in conjunction with the cam drive mechanism to achieve secondary energy storage before the frog jumps. A front leg cushioning mechanism includes two symmetrically positioned front legs on either side of the battery bracket, used to cushion the frog's landing. This biomimetic jumping frog features low transmission delay, high transmission efficiency, high transmission precision, and large transmission torque. Furthermore, the cam sleeve can be replaced, and the length of the first spring can be changed to alter the amount of stored energy and adjust the jump distance.

[0004] However, when the frog is in use, it releases stored energy instantaneously when the bearing moves to the linear groove. Therefore, it is necessary to wait for the stored energy to be released before the frog can jump. The nylon rope is used to pull the lower leg bar upwards. This can easily cause the lower leg bar to squeeze the upper spring when the frog jumps and falls, causing the upper leg bar to be under the pressure of the spring, resulting in an unstable position after the frog lands. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a biomimetic frog based on a cam-spring mechanism. This solves the problem that when the frog is in use, the energy stored in the design is released instantaneously when the bearing moves to the linear groove, requiring a wait for the energy to be released before the frog can jump. Furthermore, the use of a nylon rope to pull the lower leg bar upwards can cause the lower leg bar to compress the upper spring when the frog lands, resulting in instability upon landing.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a biomimetic frog based on a cam spring mechanism, wherein the right shell is connected to a tension spring, and the left shell and the right shell are fastened together by a fixing bolt. A DC motor is fixedly installed between the left shell and the right shell, and a notched gear is fixedly installed on the output shaft of the DC motor. The side walls of the left shell and the right shell are provided with mounting holes, and rotating seats are rotatably connected inside the mounting holes. A gear is fixedly installed between the two rotating seats, and the gear is located below the notched gear and meshes with the notched gear. The side walls of the rotating seats are rotatably connected to the upper legs through connecting rods.

[0007] Preferably, a lower leg is provided below the upper leg. One end of the lower leg is fixedly connected to a protrusion, and the other end has a second slot inside its side wall. The lower ends of the upper leg are hinged to the inside of the second slot. A support foot is provided below the lower leg. A connecting block is fixedly installed inside the side wall of the support foot, and a first slot is provided inside the connecting block. The protrusion is hinged to the inside of the first slot, thereby facilitating the frog's jumping.

[0008] Preferably, tension springs are fixedly installed between the upper leg and the lower leg to facilitate the frog's jumping.

[0009] Preferably, the connection between the upper leg and the rotating seat is located between the central axis of the rotating seat and the side wall of the rotating seat, thereby facilitating the upper leg to move up and down using the rotating seat.

[0010] Preferably, the supporting foot is arc-shaped, which facilitates the frog's jumping and prevents the two ends of the supporting foot from obstructing the frog's jump.

[0011] This invention provides a biomimetic frog based on a cam-spring mechanism. It has the following beneficial effects:

[0012] 1. The bionic frog based on the cam spring mechanism can conveniently limit the position of the upper leg by means of the gear, notched gear and the upper leg, so as to prevent the frog from bouncing up due to the tension of the spring when it lands.

[0013] 2. This bionic frog based on a cam spring mechanism, when used, allows the notched gear to rotate continuously through the cooperation between the gear and the notched gear, and to continuously drive the gear, making the frog's jumping work convenient. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the gear ring structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the right shell structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the left shell structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the upper leg structure of this utility model;

[0019] Figure 6 This is a schematic diagram of the lower leg structure of this utility model;

[0020] Figure 7 This is a schematic diagram of the notched gear structure of this utility model.

[0021] In the figure, 1-left shell, 2-right shell, 3-upper leg, 4-lower leg, 5-support foot, 6-connecting block, 7-first slot, 8-rotating seat, 9-gear, 10-mounting hole, 11-second slot, 12-protrusion, 13-notched gear, 14-tension spring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1

[0024] Please see Figures 1-7This utility model provides a biomimetic frog based on a cam spring mechanism, including a left shell 1, a right shell 2, and a tension spring 14. The left shell 1 and the right shell 2 are fastened together by a fixing bolt. A DC motor is fixedly installed between the left shell 1 and the right shell 2, and a notched gear 13 is fixedly installed on the output shaft of the DC motor. Mounting holes 10 are provided inside the side walls of both the left shell 1 and the right shell 2. Rotary seats 8 are rotatably connected inside the mounting holes 10. A gear 9 is fixedly installed between the two rotating seats 8. The gear 9 is located below the notched gear 13 and meshes with it. The side walls of the rotating seats 8... The upper leg 3 is rotatably connected to the lower leg 4 via a connecting rod. A tension spring 14 is fixedly installed between the upper leg 3 and the lower leg 4. The connection between the upper leg 3 and the rotating seat 8 is located between the central axis of the rotating seat 8 and the side wall of the rotating seat 8. When the frog body is jumping, the DC motor is turned on, causing the notched gear 13 to rotate, which can easily drive the gear 9 to rotate. The gear 9 can effectively drive the rotating seat 8 to rotate, and the rotating seat 8 can press the upper leg 3 downward. At the same time, through the connection between the gear 9 and the notched gear 13, the connected upper leg 3 can be easily supported and limited.

[0025] Example 2

[0026] In this embodiment, as Figures 1-7 As shown, a lower leg 4 is provided below the upper leg 3. One end of the lower leg 4 is fixedly connected to a protrusion 12, and the other end has a second slot 11 inside its side wall. The lower ends of the upper leg 3 are hinged to the inside of the second slot 11. A support foot 5 is provided below the lower leg 4. A connecting block 6 is fixedly installed inside the side wall of the support foot 5, and a first slot 7 is provided inside the connecting block 6. The protrusion 12 is hinged to the inside of the first slot 7. The support foot 5 is arc-shaped. When the frog's upper leg 3 bends, it will squeeze the lower leg 4, enabling the frog to effectively store energy.

[0027] It should be noted that, in this embodiment, when performing the jumping action on the frog's body, such as Figures 1-7As shown, turning on the DC motor causes the notched gear 13 to rotate, which in turn drives the gear 9 to rotate. The gear 9 then drives the rotating seat 8 to rotate, which in turn presses the upper leg 3 downwards. Simultaneously, the connection between the gear 9 and the notched gear 13 provides convenient support and limitation for the connected upper leg 3. When the frog's upper leg 3 bends, it compresses the lower leg 4, allowing the frog to effectively store energy using the tension spring 14. When the gear 9 rotates to the notched position of the notched gear 13, the gear 9 loosens, allowing it to release its restraints and the tension spring 14 to tighten, enabling the frog to jump.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A biomimetic frog based on a cam-spring mechanism, characterized in that: The device includes a left housing (1), a right housing (2), and a tension spring (14). The left housing (1) and the right housing (2) are fastened together by a fixing bolt. A DC motor is fixedly installed between the left housing (1) and the right housing (2), and a notched gear (13) is fixedly installed on the output shaft of the DC motor. The side walls of the left housing (1) and the right housing (2) are provided with mounting holes (10). Rotating seats (8) are rotatably connected inside the mounting holes (10). A gear (9) is fixedly installed between the two rotating seats (8). The gear (9) is located below the notched gear (13) and meshes with the notched gear (13). The side walls of the rotating seats (8) are rotatably connected to upper legs (3) through connecting rods.

2. The biomimetic frog based on a cam spring mechanism according to claim 1, characterized in that: A lower leg (4) is provided below the upper leg (3). One end of the lower leg (4) is fixedly connected to a protrusion (12), and the other end has a second slot (11) inside its side wall. The lower end of the upper leg (3) is hinged to the inside of the second slot (11). A support foot (5) is provided below the lower leg (4). A connecting block (6) is fixedly installed inside the side wall of the support foot (5), and a first slot (7) is provided inside the connecting block (6). The protrusion (12) is hinged to the inside of the first slot (7).

3. The biomimetic frog based on a cam spring mechanism according to claim 1, characterized in that: Tension springs (14) are fixedly installed between the upper leg (3) and the lower leg (4).

4. The biomimetic frog based on a cam spring mechanism according to claim 1, characterized in that: The connection between the upper leg (3) and the rotating seat (8) is located between the central axis of the rotating seat (8) and the side wall of the rotating seat (8).

5. The biomimetic frog based on a cam spring mechanism according to claim 2, characterized in that: The supporting foot (5) is arc-shaped.

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