Finger biting mechanism

Abstract

The invention provides a finger biting mechanism which comprises a shell mechanism, a lower jaw driving mechanism and an upper jaw driving mechanism, and the upper jaw driving mechanism and the lower jaw driving mechanism are both installed in the shell mechanism. The shell mechanism comprises a shell, an upper jaw, a U-shaped rod, a lower jaw and a tooth mechanism, the upper jaw is connected to the shell in a sliding mode, the U-shaped rod is rotationally connected to the shell, the lower jaw is driven by a lower jaw driving mechanism to be meshed with and attached to the upper jaw, the upper jaw driving mechanism drives the upper jaw to move downwards and be meshed with the lower jaw, and multiple meshing modes are achieved. The upper jaw and the lower jaw can be closed only by placing fingers on the upper jaw or the lower jaw, single-lower jaw type triggering occlusion is expanded to upper jaw and lower jaw triggering occlusion, the occlusion triggering mode is increased, interestingness is enhanced, meanwhile, a tooth mechanism is further arranged, impact force generated during occlusion can be buffered, the safety during occlusion is improved, and the safety is improved. And the hands of a user are protected.

Description

Technical Field

[0001] The invention relates to the technical field of plush toys, in particular to a finger biting mechanism. Background Art

[0002] Plush toys are toys made of soft materials (such as plush, cotton, polyester, etc.), usually with a cute appearance and touch, and are loved by children and adults. The following is a detailed introduction to plush toys, including its history, types, production process, uses, and market trends. Some plush toys are made with reference to the appearance of animals, such as plush bears, rabbits, dogs, etc., and usually imitate the appearance of real animals.

[0003] General plush toys can only be used for viewing and cannot be used for interaction. The Chinese patent with publication number CN208865181U discloses an interactive toy for taking things from a shark's mouth, including a bite mechanism and a walking mechanism; the bite mechanism is fixedly connected to the upper part of the walking mechanism, and the bite mechanism includes an upper jaw, a movable tongue plate, a lower jaw, and a bite drive gearbox; a connecting shaft is arranged behind the upper jaw, and the upper jaw is connected to the lower jaw through a connecting shaft to form a rotating hinge; the movable tongue plate is arranged in the space between the upper jaw and the lower jaw, and the movable tongue plate is connected to the lower jaw through a hinge, and a bite trigger device is arranged below the movable tongue plate; by designing the shark's tongue to be movable and placing a number of small fish on it, once too much force is applied, pressing the tongue will trigger the bite mechanism, and the shark's mouth will be closed, which greatly increases the attractiveness of the game. It can only realize the function of the upper jaw pressing down to bite the lower jaw, and its functionality is relatively simple and less interesting. Summary of the invention

[0004] The object of the present invention is to provide a finger biting mechanism to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A finger biting mechanism comprises a shell mechanism, a lower jaw driving mechanism and an upper jaw driving mechanism, wherein the upper jaw driving mechanism and the lower jaw driving mechanism are both installed in the shell mechanism.

[0007] The shell mechanism comprises a shell, an upper jaw, a U-shaped rod, a lower jaw and a tooth mechanism, wherein the upper jaw is slidably connected to the shell, the U-shaped rod is rotatably connected to the shell, the lower jaw is integrally formed on the U-shaped rod, and the tooth mechanism is mounted on the upper end of the lower jaw;

[0008] The upper jaw driving mechanism includes a second motor, a screw, a lifting block, a lifting rod and a lifting slot, wherein the second motor is installed inside the shell, the screw is rotatably connected to the inner wall of the shell, the output shaft of the second motor is fixedly connected to one end of the screw, the lifting block is threadedly connected to the screw and slidably connected to the inner wall of the shell, the lifting rod is fixedly connected to the lifting block, the upper jaw is installed on the lifting rod, the lifting slot is opened on the outer wall of the shell, and the lifting rod is slidably connected to the lifting slot;

[0009] The lower jaw driving mechanism includes a first motor, a driven wheel, a first gear, a second gear, a third gear, a fourth gear, a fifth gear, a reset gear, a reset spring, a movable shaft, a fixed shaft and a rotating shaft. The first motor, the fixed shaft, the rotating shaft and the movable shaft are all installed in the housing, and the movable shaft and the rotating shaft are rotatably connected to the housing. The fixed shaft and the rotating shaft are connected through the fixed block, the fixed block is fixedly connected to the fixed shaft, the rotating shaft is rotatably connected to the fixed block, the reset gear is rotatably connected to the fixed shaft, and one end of the reset spring is fixedly connected to the reset gear. The other end of the reset spring is fixedly connected to the fixed block, the third gear and the second gear are both fixedly connected to the rotating shaft, the fifth gear and the fourth gear are both fixedly connected to the movable shaft, the first gear is fixedly connected to the driven wheel, the other side of the first gear is rotatably connected to one side of the fourth gear through a rotating rod, the output shaft of the first motor is connected to the driven wheel through a belt, the first gear is meshed with the second gear, the third gear is meshed with the fourth gear, the fifth gear is meshed with the reset gear, and one end of the rotating shaft is fixedly connected to the U-shaped rod.

[0010] In one embodiment, the dental mechanism includes a primary buffer structure and a secondary buffer structure installed on the lower side of the primary buffer structure, the primary buffer structure includes a sliding seat slidably connected to the lower jaw, a rubber pad, a rotating plate, a connecting rod, a slide plate, a first spring and a fixed plate, the rotating plate is rotatably connected to the end of the sliding seat, the rubber pad is bonded to the upper side of the rotating plate, the two ends of the connecting rod are rotatably connected to the rotating plate and the slide plate respectively, the slide plate is slidably connected to the sliding seat, the fixed plate is installed at the top center of the sliding seat, and the two ends of the first spring are fixedly connected to the slide plate and the fixed plate respectively.

[0011] In one embodiment, the secondary buffer structure includes six second springs evenly arranged between the slide seat and the lower jaw, the number of the primary buffer structures is two, the two primary buffer structures are symmetrically arranged, and three second springs are installed at the bottom of each primary buffer structure.

[0012] In one embodiment, the rubber pad is a three-section folding plate structure, the top of which is a smooth structure, and the bending parts of the rubber pad are chamfered.

[0013] In one embodiment, a chip-type thermal resistor sensor is installed on the lower side of the upper jaw and the upper side of the lower jaw, the chip-type thermal resistor sensor on the upper jaw is electrically connected to the first motor, and the chip-type thermal resistor sensor on the lower jaw is electrically connected to the second motor.

[0014] In one embodiment, the shell is arranged inside the wool fabric, and a battery compartment is also arranged outside the shell.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention is arranged inside a plush fabric toy, and drives the lower jaw to bite and fit on the upper jaw through a lower jaw driving mechanism, and drives the upper jaw to move downward and bite on the lower jaw through an upper jaw driving mechanism, thereby realizing a variety of bite modes. When in use, the upper and lower jaws can be closed by only placing fingers on the upper jaw or the lower jaw, and the bite is expanded from a single lower jaw triggering bite to a bite that can be triggered by both the upper and lower jaws, thereby increasing the bite triggering modes and enhancing the fun. At the same time, the present invention is also provided with a tooth mechanism, which can buffer the impact force during biting, improve the safety during biting, and protect the user's hands. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a stereogram of the present invention;

[0018] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0019] Figure 3 It is a structural schematic diagram of the jaw driving mechanism of the present invention;

[0020] Figure 4 It is a structural schematic diagram of the tooth mechanism of the present invention.

[0021] In the figure: 11, housing; 12, upper jaw; 13, U-shaped rod; 14, lower jaw; 15, tooth mechanism; 21, first motor; 22, driven wheel; 23, first gear; 24, second gear; 25, third gear; 26, fourth gear; 27, fifth gear; 28, reset gear; 29, reset spring; 210, fixed block; 211, movable shaft; 212, fixed shaft; 213, rotating shaft; 31, second motor; 32, lead screw; 33, lifting block; 35, lifting rod; 36, lifting slot; 151, slide seat; 152, rubber pad; 153, rotating plate; 154, connecting rod; 155, slide plate; 156, first spring; 157, fixed plate; 158, second spring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example:

[0024] See also Figures 1 to 4 , the present invention provides a technical solution:

[0025] A finger biting mechanism includes a shell mechanism, a lower jaw driving mechanism and an upper jaw driving mechanism, wherein the upper jaw driving mechanism and the lower jaw driving mechanism are both installed in the shell mechanism, the lower jaw driving mechanism is used to drive the lower jaw 14 to bite and fit on the upper jaw 12, and the upper jaw driving mechanism is used to drive the upper jaw 12 to move downward and bite on the lower jaw 14. Chip thermal resistor sensors are installed on the lower side of the upper jaw 12 and the upper side of the lower jaw 14. The chip thermal resistor sensor is a thermal resistor temperature sensor, which is a sensor that measures temperature by using the principle that the resistance value of a conductor or semiconductor changes with temperature.

[0026] The shell mechanism includes an outer shell 11, an upper jaw 12, a U-shaped rod 13, a lower jaw 14 and a tooth mechanism 15. The upper jaw 12 is slidably connected to the outer shell 11. The upper jaw 12 can slide up and down on the front side of the outer shell 11, and cooperate with the lower jaw 14 to achieve a bite function when moving downward. The U-shaped rod 13 is rotatably connected to the outer shell 11, and the two ends of the U-shaped rod 13 are respectively rotated on both sides of the outer shell 11. The lower jaw 14 is integrally formed on the U-shaped rod 13. The tooth mechanism 15 is installed on the upper end of the lower jaw 14. The lower jaw 14 can be moved by the rotation of the U-shaped rod 13, and cooperates with the upper jaw 12 to achieve a bite function.

[0027] The upper jaw driving mechanism includes a second motor 31, a screw rod 32, a lifting block 33, a lifting rod 35 and a lifting slot 36. The second motor 31 is installed inside the housing 11. The screw rod 32 is rotatably connected to the inner wall of the housing 11. The output shaft of the second motor 31 is fixedly connected to one end of the screw rod 32. The lifting block 33 is threadedly connected to the screw rod 32 and slidably connected to the inner wall of the housing 11. The lifting rod 35 is fixedly connected to the lifting block 33. The upper jaw 12 is installed on the lifting rod 35. The lifting slot 36 is opened on the outer wall of the housing 11. The lifting rod 35 is slidably connected to the lifting slot 36. The chip-type thermal resistor sensor on the jaw 14 is electrically connected to the second motor 31. When in use, when the hand touches the lower jaw 14, the chip-type thermal resistor sensor detects a temperature change, thereby controlling the operation of the second motor 31 through the single-chip microcomputer installed in the housing 11. The second motor 31 drives the screw rod 32 to rotate, so that the lifting block 33 moves up and down along the screw rod 32, thereby driving the lifting rod 35 and the upper jaw 12 to move up and down. The upper jaw 12 moves down and cooperates with the lower jaw 14 that has not moved to bite the finger. After the finger leaves the lower jaw 14, the second motor 31 drives the screw rod 32 to rotate, so that the upper jaw 12 is reset.

[0028] The lower jaw driving mechanism includes a first motor 21, a driven wheel 22, a first gear 23, a second gear 24, a third gear 25, a fourth gear 26, a fifth gear 27, a reset gear 28, a reset spring 29, a movable shaft 211, a fixed shaft 212 and a rotating shaft 213. The first motor 21, the fixed shaft 212, the rotating shaft 213 and the movable shaft 211 are all installed in the housing 11. The first motor 21 is installed in the housing 11 through a fixing frame. The fixed shaft 212 is fixed and is used to support the reset gear 28, the reset spring 29 and the fixed block 210. The end of the rotating shaft 213 is rotatably connected to the fixed block 210. The movable shaft 211 and the rotating shaft 213 are both rotatably connected to the housing 11. The fixed shaft 212 and the rotating shaft 213 are connected through the fixed block 210. The fixed block 210 is fixedly connected to the fixed shaft 212. The reset gear 28 is rotatably connected to the fixed shaft 212. One end of the reset spring 29 The third gear 25 and the second gear 24 are fixedly connected to the rotating shaft 213, the fifth gear 27 and the fourth gear 26 are fixedly connected to the movable shaft 211, the first gear 23 is fixedly connected to the driven wheel 22, the other side of the first gear 23 is rotatably connected to one side of the fourth gear 26 through the rotating rod, the output shaft of the first motor 21 is connected to the driven wheel 22 through the belt, the first gear 23 is meshed with the second gear 24, the third gear 25 is meshed with the fourth gear 26, the fifth gear 27 is meshed with the reset gear 28, and one end of the rotating shaft 213 is fixedly connected to the U-shaped rod 13 to drive the lower jaw 14 to bite. The chip thermal resistor sensor on the upper jaw 12 is electrically connected to the first motor 21. During use, when the hand touches the upper jaw 12, the chip thermal resistor sensor on the upper jaw 12 detects a temperature change, and the first motor 21 is controlled to operate through the single chip microcomputer installed in the housing 11. The first motor drives the driven wheel 22 and the first gear 23 to rotate, and then drives the second gear 24 and the third gear 25 to rotate. At this time, the rotating shaft 213 rotates synchronously to drive the U-shaped rod 13 to rotate, so that the lower jaw 14 is engaged. When the second gear 24 and the third gear 25 rotate, the fourth gear 26 and the fifth gear 27 will rotate, and then drive the reset gear 28 to rotate. The reset spring 29 twists to generate a reverse force. When the finger leaves the upper jaw 12, the motor 21 is in an unpowered state, the external force on the reset gear 28 is removed, and the reset spring 29 drives the reset gear 28 to rotate and reset, so that the second gear 24, the third gear 25, the fourth gear 26 and the fifth gear 27 are reset. At this time, the rotating shaft 213 is reset, driving the U-shaped rod 13 to rotate, so that the lower jaw 14 is reset.

[0029] Furthermore, the tooth mechanism 15 includes a primary buffer structure and a secondary buffer structure installed on the lower side of the primary buffer structure. The primary buffer structure includes a slide 151, a rubber pad 152, a rotating plate 153, a connecting rod 154, a slide plate 155, a first spring 156 and a fixed plate 157 which are slidably connected to the lower jaw 14. The rotating plate 153 is rotatably connected to the end of the slide 151. The rubber pad 152 is bonded to the upper side of the rotating plate 153. The two ends of the connecting rod 154 are rotatably connected to the rotating plate 153 and the slide plate 155 respectively. The slide plate 155 is slidably connected to the slide 151. The fixed plate 157 is installed at the top center of the slide 151. The two ends of the first spring 156 are fixedly connected to the slide plate 155 and the fixed plate 157 respectively. The rubber pad 152 is a three-stage folding plate structure. The rubber pad 152 covers the outer side of the rotating plate 153 and the sliding seat 151. The top of the rubber pad 152 is a smooth plane. The bending parts of the rubber pad 152 are chamfered to reduce the bite force. The secondary buffer structure includes six second springs 158 evenly arranged between the sliding seat 151 and the lower jaw 14. The number of the primary buffer structure is two. The two primary buffer structures are symmetrically arranged. Three second springs 158 are installed at the bottom of each primary buffer structure. When in use, when the upper jaw 12 or the lower jaw 14 is closed, since the tooth mechanism 15 has a protruding structure, the rubber pad 152 will first contact the hand. At this time, the rubber pad 152 will deform and press down, so that the rotating plates 153 on both sides rotate and press down, and the sliding plate 155 is pushed to move through the connecting rod 154, squeezing the first spring 156. The first spring 156 absorbs mechanical energy and converts it into potential energy, which can play a buffering and protective role. At the same time, the sliding seat 151 will be pressed down synchronously, and the second spring 158 will further reduce the impact force to prevent the hand from being injured by the impact.

[0030] Furthermore, the housing 11 is disposed inside the wool fabric, and a battery compartment is disposed outside the housing 11, and the battery compartment is also disposed inside the wool fabric, and batteries are placed in the battery compartment to provide power for the first motor 21 and the second motor 31. The wool fabric is configured in an animal shape to improve the ornamental value.

[0031] Furthermore, when the hand touches the upper jaw 12 and the lower jaw 14 at the same time, the upper jaw 12 and the lower jaw 14 move at the same time and bite the hand.

[0032] The working principle of the present invention is as follows: the lower jaw driving mechanism is used to drive the lower jaw 14 to bite and fit onto the upper jaw 12; the upper jaw driving mechanism is used to drive the upper jaw 12 to move downward and bite onto the lower jaw 14; the upper jaw 12 can slide up and down on the front side of the shell 11, and when moving downward, cooperate with the lower jaw 14 to realize the biting function; the lower jaw 14 can be driven to move by the rotation of the U-shaped rod 13, and cooperate with the upper jaw 12 to realize the biting function. During use, when the hand touches the lower jaw 14, the chip-type thermal resistor sensor detects a temperature change, and the second motor 31 is controlled to operate through the single-chip microcomputer installed in the housing 11. The second motor 31 drives the screw rod 32 to rotate, so that the lifting block 33 moves up and down along the screw rod 32, and then drives the lifting rod 35 and the upper jaw 12 to move up and down. The upper jaw 12 moves down and cooperates with the lower jaw 14 that has not moved to bite the finger. After the finger leaves the lower jaw 14, the second motor 31 drives the screw rod 32 to rotate, so that the upper jaw 12 is reset; when the hand touches the upper jaw 12, the chip-type thermal resistor sensor on the upper jaw 12 detects a temperature change, and the first motor 21 is controlled to operate through the single-chip microcomputer installed in the housing 11. The first motor drives the driven wheel 22 and the first gear 23 to rotate, and then drives the second gear 24 and the third gear 25 to rotate. At this time, the rotating shaft 213 rotates synchronously to drive the U-shaped rod 13 to rotate, so that the lower jaw 14 bites. When the second gear 24 and the third gear 25 rotate, the fourth gear 21 will be rotated. 26 and the fifth gear 27 rotate, thereby driving the reset gear 28 to rotate, and the reset spring 29 twists to generate a reverse force. When the finger leaves the upper jaw 12, the motor 21 is in an unpowered state, the external force on the reset gear 28 is removed, and the reset spring 29 drives the reset gear 28 to rotate and reset, so that the second gear 24, the third gear 25, the fourth gear 26 and the fifth gear 27 are reset. At this time, the rotating shaft 213 is reset, driving the U-shaped rod 13 to rotate, so that the lower jaw 14 is reset; when the upper jaw 12 or the lower jaw 14 is closed, since the tooth mechanism 15 has a convex structure, the rubber pad 152 will first contact the hand. At this time, the rubber pad 152 will deform and press down, so that the rotating plates 153 on both sides rotate and press down, and the sliding plate 155 is pushed to move through the connecting rod 154, squeezing the first spring 156. The first spring 156 absorbs mechanical energy and converts it into potential energy, which can play a buffering and protective role. At the same time, the slide seat 151 will be pressed down synchronously, and the second spring 158 further reduces the impact force to prevent the hand from being injured by the impact.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A finger biting mechanism, comprising a shell mechanism, a lower jaw driving mechanism and an upper jaw driving mechanism, wherein the upper jaw driving mechanism and the lower jaw driving mechanism are both installed in the shell mechanism, characterized in that: The shell mechanism comprises a shell (11), an upper jaw (12), a U-shaped rod (13), a lower jaw (14) and a tooth mechanism (15); the upper jaw (12) is slidably connected to the shell (11); the U-shaped rod (13) is rotatably connected to the shell (11); the lower jaw (14) is integrally formed on the U-shaped rod (13); and the tooth mechanism (15) is installed on the upper end of the lower jaw (14); The upper jaw driving mechanism comprises a second motor (31), a screw rod (32), a lifting block (33), a lifting rod (35) and a lifting slot (36), wherein the second motor (31) is installed inside the housing (11), the screw rod (32) is rotatably connected to the inner side wall of the housing (11), the output shaft of the second motor (31) is fixedly connected to one end of the screw rod (32), the lifting block (33) is threadedly connected to the screw rod (32) and slidably connected to the inner side wall of the housing (11), the lifting rod (35) is fixedly connected to the lifting block (33), the upper jaw (12) is installed on the lifting rod (35), the lifting slot (36) is opened on the outer side wall of the housing (11), and the lifting rod (35) is slidably connected to the lifting slot (36); The lower jaw driving mechanism comprises a first motor (21), a driven wheel (22), a first gear (23), a second gear (24), a third gear (25), a fourth gear (26), a fifth gear (27), a reset gear (28), a reset spring (29), a movable shaft (211), a fixed shaft (212) and a rotating shaft (213), wherein the first motor (21), the fixed shaft (212), the rotating shaft (213) and the movable shaft (211) are all mounted on the The movable shaft (211) and the rotating shaft (213) are both rotatably connected to the housing (11); the fixed shaft (212) and the rotating shaft (213) are connected via the fixed block (210); the fixed block (210) is fixedly connected to the fixed shaft (212); the rotating shaft (213) is rotatably connected to the fixed block (210); the reset gear (28) is rotatably connected to the fixed shaft (212); One end of the spring (29) is fixedly connected to the reset gear (28), and the other end of the reset spring (29) is fixedly connected to the fixed block (210). The third gear (25) and the second gear (24) are both fixedly connected to the rotating shaft (213). The fifth gear (27) and the fourth gear (26) are both fixedly connected to the movable shaft (211). The first gear (23) is fixedly connected to the driven wheel (22). The other side of the first gear (23) is rotationally connected to one side of the fourth gear (26) through a rotating rod. The output shaft of the first motor (21) is transmission-connected to the driven wheel (22) through a belt. The first gear (23) is meshed with the second gear (24). The third gear (25) is meshed with the fourth gear (26). The fifth gear (27) is meshed with the reset gear (28). One end of the rotating shaft (213) is fixedly connected to the U-shaped rod (13).

2. A finger biting mechanism according to claim 1, characterized in that: The tooth mechanism (15) includes a primary buffer structure and a secondary buffer structure installed on the lower side of the primary buffer structure, wherein the primary buffer structure includes a slide seat (151) slidably connected to the lower jaw (14), a rubber pad (152), a rotating plate (153), a connecting rod (154), a sliding plate (155), a first spring (156) and a fixed plate (157), wherein the rotating plate (153) is rotatably connected to the upper side of the slide seat (151), the rubber pad (152) is bonded to the upper side of the rotating plate (153), the two ends of the connecting rod (154) are rotatably connected to the rotating plate (153) and the sliding plate (155), the sliding plate (155) is slidably connected to the slide seat (151), the fixed plate (157) is installed at the top center of the slide seat (151), and the two ends of the first spring (156) are fixedly connected to the sliding plate (155) and the fixed plate (157) respectively.

3. A finger biting mechanism according to claim 2, characterized in that: The secondary buffer structure includes six second springs (158) evenly arranged between the slide seat (151) and the lower jaw (14), the number of the primary buffer structures is two, the two primary buffer structures are symmetrically arranged, and three second springs (158) are installed at the bottom of each primary buffer structure.

4. A finger biting mechanism according to claim 2, characterized in that: The rubber pad (152) is a three-section folded plate structure, the top of which is a smooth structure, and the bending parts of the rubber pad (152) are all chamfered.

5. The finger biting mechanism according to claim 1, characterized in that: The lower side of the upper jaw (12) and the upper side of the lower jaw (14) are both equipped with chip-type thermal resistance sensors; the chip-type thermal resistance sensor on the upper jaw (12) is electrically connected to the first motor (21); and the chip-type thermal resistance sensor on the lower jaw (14) is electrically connected to the second motor (31).

6. The finger biting mechanism according to claim 1, characterized in that: The outer shell (11) is arranged inside the wool fabric, and a battery compartment is also arranged outside the outer shell (11).

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