JP3228297U - Transmission mechanism and imitation fish - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shut off power under the action of an external force, and when the external force is lost, it is automatically restored. Therefore, by applying it to imitation fish, the ability to counter the external force is improved, and it is not in water. Provide a transmission mechanism that also supports the use of. A transmission mechanism constitutes a transmission gear assembly including a first transmission gear 100 and a second transmission gear 200 of an engaging drive unit. The second transmission gear is provided on the support column 500, and the support column is provided with a reset spring 700 on the side of the second transmission gear away from the first transmission gear. The reset spring urges the second transmission gear toward the first transmission gear so that the first transmission gear and the second transmission gear mesh with each other via the upper and lower wavy gears 300 and 400. [Selection diagram] Fig. 1

Description

This device relates to biomimetic toys, and particularly to transmission mechanisms and mimic fish.

With the progress of society and the development of technology, the demand for interactive toys is increasing, and many toys that imitate the appearance and movement of animals living in the natural world are beginning to appear, and the interactiveness and fun of toys are increasing. .. More and more people are choosing interactive toys for their children and pets.

Most of the electric toys that imitate the fish on the market today are toys that imitate the fish that swim in the water and are used in the water, imitating the violent bouncing movement of the fish away from the water. It is not possible.

Electric imitation fish toys have several operating principles, all of which have obvious advantages and disadvantages.

In the gear-driven imitation fish toy, the DC motor drives several gears back and forth to swing the tail of the fish back and forth. The drawback of this imitation fish toy is that the internal gear is prone to slipping and missing teeth when exposed to strong external forces when the fish's tail sways.

The eccentric ring type imitation fish toy realizes the reciprocating movement of the tail by rotating the eccentric wheel in one direction with a DC motor, the eccentric wheel driving the rack for reciprocating movement, and the rack reciprocating the round gear. To do. The disadvantage of this imitation fish toy is that the amplitude of the tail swing is limited by the length of the rack, a large swing width requires a long rack, the toy size is also significantly larger, and it is subject to strong external force interference. The rack is easily damaged.

The electromagnet-type imitation fish toy uses the principle of an electromagnet to generate a magnetic force when the coil is energized, which attracts the iron swing arm, and when the energization is turned off, the magnetic force disappears and the swing arm returns to its original position. By going, the reciprocating movement of the fish tail is realized. The disadvantages of this imitation fish toy are low amplitude and swinging force, and high temperature when driven for a long time.

Japanese Patent Application No. 2000-317163 Utility model registration No. 3076708

Imitation fish used outside the surface of the water are often hindered by external force when the tail swings, and the imitation fish while swinging the tail is easily damaged by the application of external force, for example, width and force. While the tail is swinging in a large state, the child may suddenly grab the tail and apply external force, which may cause the fish's tail to become immobile, resulting in damage to the imitation fish.

The imitation fish used in the plurality of waters has a weak resistance to an external force due to the above-mentioned drawbacks, and is not suitable for use in non-water.

An object of the present invention is to provide a transmission mechanism and a mimicry fish for solving the technical problem that the resistance to an external force is weak when the imitation fish vibrates greatly and violently when it is out of the water. is there.

The transmission mechanism provided by the present invention comprises a transmission gear assembly, and the transmission gear assembly is composed of a first transmission gear and a second transmission gear that mesh with each other.

The second transmission gear is installed on a support column, and is characterized in that a reset spring is provided on a side portion of the second transmission gear away from the first transmission gear. Further, in the second transmission gear, the reset spring is axially along the column under the action of an external force by keeping the first transmission gear and the second transmission gear relatively separated from each other. It can overcome the moving force.

Further, a first wavy gear is provided on the surface of the first transmission gear facing the second transmission gear, and a second wavy gear is provided on the surface of the second transmission gear facing the second transmission gear. Has been done.

The first wavy gear and the second wavy gear are engaged and connected under the action of the reset spring.

Further, a pedestal is provided on the support column, and a sleeve of the reset spring is provided between the pedestal and the second transmission gear.

Further, the support column is installed so as to penetrate the first transmission gear and the second transmission gear, and the first transmission gear and the second transmission gear are rotatably connected to the support column, respectively. Further, the first transmission gear is axially fixed to the support column.

Further, it constitutes an output gear assembly, and the output gear assembly is composed of an output rod and an output gear.

The first transmission gear is an active gear, the second transmission gear is a passive gear, the output gear and the second transmission gear are meshed and driven, and the output rod is connected to the output gear to generate the output. The gear can be rotated in conjunction with the output rod.

Further including a drive gear assembly, the drive gear assembly includes a first drive gear and a second drive gear, the first drive gear meshing with a gear on the output shaft of the drive device, and the second drive. The gear is meshed with the first transmission gear, and the first drive gear is connected to the second drive gear and rotates in synchronization with the second drive gear.

The present invention also provides an imitation fish comprising an imitation fish cover and a biomimetic movement, the biomimetic movement being set in the imitation cover.

The biomimetic movement includes a movement outer shell, a swing arm, and the transmission mechanism.

The transmission mechanism is installed in the outer shell of the movement, and the output rod of the transmission mechanism is connected to the swing arm through the outer shell of the transmission.

Further, the movement outer shell includes a movement upper lid provided at the upper end of the movement outer shell and a movement lower lid provided at the lower end of the movement outer shell.

Inside the outer shell of the movement, a battery, a control board, and a drive device for driving the transmission mechanism are provided. Further, the upper lid of the movement and the lower lid of the lower movement are each provided with mounting grooves for fixing the battery, the control board and the driving device.

Further, the outer shell of the movement is provided with a protrusion, the connecting component of the swing arm is provided with a groove corresponding to the protrusion, and the upper end and the lower end of the output rod of the output gear assembly are formed in the groove. It is connected.

In addition, the mimicking cover has an opening, the opening is provided with a zipper or velcro®, and the opening is open enough to allow the biomimetic movement to pass through.

The transmission mechanism provided by the present invention realizes power transmission between the first transmission gear and the second transmission gear by engaging with each other under the action of a reset spring when not affected by other external forces. Under a relatively large external force pushing action, for example, when a child grasps an imitation fish and realizes the external force pushing action, due to the large external force pushing action, at this time, between the first transmission gear and the second transmission gear Due to the pushing action, it is necessary to overcome a large resistance in order to realize the transmission, and further, due to the resistance action, the passive gear of both the first transmission gear and the second transmission gear cannot generate power. When the passive gear of the two cannot generate power, the active gear of the two still rotates under the action of the transmission mechanism. At this time, the second transmission gear faces the strut and overcomes the acting force of the reset spring to move. can do. Therefore, if the active gear can be rotated, the distance between the active gear and the second transmission gear can be changed, so that the active gear and the passive gear fit in a slippery manner. That is, the active gear can still be rotated and the transmission and drive mechanisms are not damaged by the action of external forces.

When the external force disappears, the reset springs act to return the two transmission gears to their original positions and maintain the driving state.

By adding a reset spring and a support to the transmission mechanism, the resistance to the external force of the transmission mechanism is improved, and the external force resistance ability of the biomimetic toy that applies the corresponding drive mechanism is improved, and it is said to be used in non-water. The demand can be satisfied.

In addition, in order to more clearly explain the concrete implementation means of the present invention or the technical solution in the existing technology, the attached drawings used in the specific implementation method or the explanation of the existing technology will be briefly described below. The attached drawings used in the following explanations are part of the method of devising the present application, and from the viewpoint of general engineers in this field, others are based on these attached drawings without any creative effort. It is clear that the attached figure of can be obtained.

It is a figure which shows typically the structure of the transmission mechanism provided as the Example of Embodiment of this invention. It is a figure which shows another structure of the transmission mechanism provided in the Example of this invention. It is a schematic diagram which shows the structure of the imitation fish provided as an Example of this invention. It is an exploded perspective view which shows the biomimetic movement of the imitation fish shown in FIG. It is a schematic diagram which shows the internal structure of the biomimetic movement of the imitation fish shown in FIG.

The technical scheme of the invention will be clearly and completely described below together with the examples, but it is clear that the embodiments described are part, but not all, of the embodiments of this utility model. Based on the examples of the present invention, all other examples obtained by general engineers in the field without performing creative labor fall under the protection scope of the present invention.

As shown in FIG. 1, the present invention provides a transmission mechanism including a transmission gear assembly, and the transmission gear assembly comprises a first transmission gear 100 and a second transmission gear 200 that are meshed and driven.

The second transmission gear 200 is provided on the support column 500, and the support column 500 has a reset spring 700 provided on the side of the second transmission gear 200 away from the first transmission gear 100. The reset spring 700 has a tendency to move the second transmission gear 200 toward the first transmission gear 100 so that the first transmission gear 100 and the second transmission gear 200 mesh with each other to move. There is. Further, the second transmission gear 200 overcomes the acting force of the reset spring 700 under the action of an external force so that the first transmission gear 100 and the second transmission gear 200 maintain a relative distance, and the strut It is possible to move along the axial direction of 500.

In some embodiments, the transmission gear assembly of the transmission mechanism can block the transmission of power under the action of an external force and can automatically restore the transmission of power when no external force acts.

When the second transmission gear 200 receives an external force, the rotation of the second transmission gear 200 is stopped, whereby the first transmission gear 100 is driven relative to the second transmission gear 200, and the second transmission gear 200 is moved. The reset spring 700 is pressed downward, the second transmission gear 200 moves in a direction away from the first transmission gear 100 along the support column 500, and the drive of the first transmission gear 100 and the second transmission gear 200 is cut off. ..

Based on the above embodiment, the first transmission gear 100 further includes a first wavy gear (upper wavy gear) 300 on the side facing the second transmission gear 200, and the second transmission gear 200 is the first transmission gear 200. A second wavy gear (lower wavy gear) 400 is provided on the surface of the transmission gear 100, and the first wavy gear 300 meshes with and is connected to the second wavy gear 400 by the action of the reset spring 700.

When the second transmission gear 200 is stopped by an external force, the resistance force is larger than the frictional force between the reset spring 700 and the upper wavy gear 300 generated by pressing the lower wavy gear 400, and the lower wavy gear The 400 descends and presses on the reset spring 700.

When the external force disappears or becomes less than the friction caused by the reset spring 700, the reset spring 700 moves the second transmission gear 200 upward along the strut 500 and re-tightens the upper wavy gear 300 and the lower wavy gear 400. Engage and rotate.

Based on the base box of the embodiment, the support column 500 is further set with the pedestal 600, and the reset spring 700 is arranged between the pedestal 600 and the second transmission gear 200.

Based on the base box of the embodiment, the support column 500 further penetrates the first transmission gear 100 and the second transmission gear 200, and the first transmission gear 100 and the second transmission gear 200, respectively. It is rotatably connected to the support column 500, and the first transmission gear 100 is fixed upward on the axis of the support column 500.

The second drive gear 200 is provided with a guide hole, and the reset spring 700 on the support column 500 is supported by the pedestal 600 to move the second transmission gear 200 on the support column 500. When the second transmission gear 200 is stopped by an external force, the resistance force is larger than the frictional force between the reset spring 700 and the upper wavy gear 300 generated by pressing the lower wavy gear 400, and the lower wavy gear The 400 descends and presses on the reset spring 700.

Further, the lower end of the reset spring 700 may be supported by another place such as on the movement outer shell 180, and the first transmission gear 100 and the second transmission gear 200 are provided on the support column 500, and the first transmission gear 100 is provided. Is fixed to the stanchion 500, whereby the first transmission gear 100 rotates in synchronization with the stanchion 500, or the first transmission gear 100 is fixed only in the axial direction of the stanchion 500, and the first transmission gear 100 is fixed to the stanchion 500. It may rotate relative to the relative.

As shown in FIG. 2, based on the above embodiment, the output gear assembly is further included, and the output gear assembly is composed of an output rod 900 and an output gear 800.

The first transmission gear 100 is an active gear, the second transmission gear 200 is a passive gear, the output gear 800 is driven by meshing with the second transmission gear 200, and the output rod 900 is the output gear 800. The output gear 800 can rotate the output rod 900.

In some embodiments, the second transmission gear 200 of the transmission gear assembly of the transmission mechanism is capable of rotating the output rod 900 via the output gear 800, whereby the swing arm 130 connected to the output rod 900 outputs. It can rotate with the rod 900 to swing the swing arm 130, which can be applied to imitation fish to simulate a violent swing when the fish leaves the water.

The second transmission gear 200 can always mesh with the output gear 800 while moving up and down along the support column 500, whereby the thickness of the second transmission gear 200 or the thickness of the output gear 800 is the displacement amount of the second transmission gear 200. It is designed not to be smaller than.

Based on the above embodiment, the drive gear assembly is further configured, the drive gear assembly includes a first drive gear 110 and a second drive gear 120, and the first drive gear 110 is on the output shaft of the drive device 250. The second drive gear 120 is meshed with the first transmission gear 100, and the first drive gear 110 is connected to the second drive gear 120 and is configured to rotate synchronously. ..

In some embodiments, the drive 250 may be a motor, the gear on the output shaft of the motor engages the first drive gear 110, and the second drive gear 120 is at the lower end of the first drive gear 110. Once set, the first drive gear 110 rotates the second drive gear 120 in conjunction with each other, and the second drive gear 120 rotates the first transmission gear 100 so as to follow the rotation, thereby driving the output gear 800. Is to be transmitted.

Generally, the first drive gear 110 and the second drive gear 120 can rotate synchronously, the first drive gear 110 having a relatively large diameter is connected to the drive device 250, and the first drive gear 110 has a slightly smaller diameter via the second drive gear 120. By transmitting the power, it becomes easy to reduce the number of turns of the swing arm 130.

Both the general drive gear assembly and the first transmission gear 100 are provided with gear shafts to facilitate their installation.

In order to swing the output rod 900 better in conjunction with the swing arm 130, the output rod 900 has a rectangular cross section, the rectangular output rod 900 is less slippery, and the swing arm 130 is better at the output rod 900. The cross section of the output rod 900 may be triangular, pentagonal, hexagonal or the like so as to be able to follow the movement of.

The drive gear assembly and the output gear assembly can reduce the output of the drive unit 250 and achieve the purpose of decelerating, and the transmission gear assembly achieves the purpose of interrupting power transmission.

As shown in FIGS. 3-5, the present invention also provides an imitation fish comprising an imitation cover 230 and a biomimetic movement 240, wherein the biomimetic movement 240 is set in the imitation cover 230 and the living body. The mimicking movement 240 includes a movement outer shell 180, a swing arm 130, and the drive mechanism, the drive mechanism is set in the movement outer shell 180, and the output rod 900 of the drive mechanism penetrates the movement outer shell 180. It is connected to the swing arm 130.

This imitation fish is used to simulate the swinging motion of the fish after it leaves the water, i.e. the imitation fish does not enter the water and does not require waterproofing.

The biomimetic movement 240 of the imitation fish is installed in the imitation fish cover 230, and by swinging the biomimetic movement 240, the imitation fish cover 230 swings greatly and violently when the living fish leaves the water. I'm simulating.

Based on the above embodiment, the movement outer shell 180 is further composed of a movement upper lid 190 provided at the upper end of the movement outer shell 180 and a movement lower lid 210 provided at the lower end of the movement outer shell 180. ing.

The movement outer shell 180 includes a battery 220, a control board 140, and a drive unit 250 for driving the drive mechanism. Further, the movement upper lid 190 and the movement lower lid 210 are inside the battery 220 and the control board, respectively. It is provided with a mounting slot for fixing the 140 and the drive unit 250.

The battery 220 may be a dry battery 220 or a storage battery 220, the drive device 250 is a DC motor, and the control board 140 rotates forward and reverse of the DC motor by switching between the positive electrode and the negative electrode of the DC motor and switching the current direction. This realizes the reciprocating swing of the swing arm 130.

The imitation fish cover 230 is made of brushed cotton with filling, and the imitation fish cover made of brushed cotton has a certain degree of flexibility, and the toy tail swings back and forth under the drive of the internal biomimetic movement 240. And achieve the simulation of the swinging motion of the raw fish.

In the movement upper lid 190 and the movement lower lid 210 set on the movement outer shell 180, the movement upper lid 190 and the movement lower lid 210 are installed after the battery 220 and the control board 140 are set in the movement outer shell 180.

A plurality of mounting slots are provided in the movement upper lid 190 and the movement lower lid 210, and the battery 220, the control board 140 and the driving device 250 are installed in the mounting slots, whereby the battery 220, the control board 140 and the driving device 250 are provided. Does not sway inside the outer shell of the movement.

Based on the above embodiment, the movement outer shell 180 is further provided with a protrusion, and the swing arm 130 is provided with a swing arm connecting part 260 having a groove corresponding to the protrusion, and the output gear assembly. Protrusions connecting the protrusion and the groove are provided at both ends of the output rod 900.

In some embodiments, the protrusions are placed on the outer shell 180 of the movement, the grooves are placed on the swing arm connecting part 260 of the swing arm 130, and the grooves correspond to the protrusions. The upper and lower ends of the output rod 900 of the output gear assembly penetrate the protrusions on the movement outer shell 180 and are connected to the groove, whereby after the output rod 900 rotates, the swing arm connecting part 260 is interlocked and rotated. The swing arm 130 rotates.

Based on the above embodiment, the imitation fish cover 230 further comprises an opening, the opening comprising a zipper or velcro®; the opening can only be passed by the biomimetic movement 240. Has an opening degree of.

In order to facilitate replacement of the battery 220 in the biomimetic movement 240 or charging of the battery 220, the imitation fish cover 230 is provided with an opening, and the biomimetic movement 240 is inserted into the imitation fish cover 230. Can be done. The battery 220 in the biomimetic movement 240 can also be charged through this opening.

Based on the above embodiment, the control board 140 further has a sensor 150 for detecting ambient vibration or sound, a charging port 160 for charging the battery 220, and a switch 170 for controlling the imitation fish. And have.

The control board 140 realizes control of the rotation speed of the DC motor by PWM (pulse width) modulation, and the control board 140 realizes control of the rotation time of the DC motor by controlling the power supply time of the DC motor. The swing angle of the swing arm 130 is controlled, the sensor 150 senses ambient sounds and vibrations, transmits a signal to the control board 140, and the control board 140 controls the reciprocating motion of the drive unit 250. This paragraph is of currently known technology and will not be discussed further.

The control board 140 controls the power electrode, PWM modulation and power duration of the DC motor to realistically simulate the complex tail-waving movement of a fish at different speeds and amplitudes. Separating the biomimetic movement 240 and the imitation fish cover 230 makes the toy softer and safer, and the replacement cover extends product life and reduces resource waste. The toy can simulate the movement of fish in a water-free environment, expanding its range of use. The sound or vibration sensor 150 allows the toy to react to the vibration or sound of the external environment, increasing the interaction of the toy.

In the transmission mechanism provided by the present invention, when no other external force is received, the first transmission gear 100 and the second transmission gear 200 mesh with each other under the action of the reset spring 700 to realize power transmission between them. When a child is gripped by a biomimetic toy and the compression action of the external force occurs, for example, when the compression action of the external force is applied, the first transmission gear 100 and the second transmission are then transmitted by the compression action of the relatively large external force. During the gear 200, it is necessary to overcome a relatively large resistance in order to achieve the drive by the compressive action of the external force. When the passive gear of the first transmission gear 100 and the second transmission gear 200 does not output power due to the resistance action and the passive gear of the two cannot transmit the power, the active gear of the two is operated by the action of the drive device 250. Can still rotate, at which time the second transmission gear 200 can overcome the movement of the reset spring 700 by the acting force on the strut 500, so that when the active gear of the two is rotated, the active gear The distance between the active gear and the passive gear can be changed, and the active gear and the passive gear cooperate in the form of slip, that is, the drive unit 250 and the transmission mechanism are damaged by external force even if the active gear is still rotating. It will never happen.

Even if the external force is lost, the two transmission gears can be reset and the driving state can be maintained by the action of the set spring 700.

In this way, by providing the reset spring 700 and the support column 500 in the transmission mechanism, the resistance to the external force of the transmission mechanism is improved, and the corresponding biomimetic toy using the transmission mechanism is improved in the resistance to the external force and is not. It can be seen that it meets the needs for underwater use.

When the imitation fish is used as a toy, it is easy for children to apply external force to the imitation fish. The transmission mechanism effectively solves this problem and extends the product life of the toy.

After the transmission mechanism is attached, the imitation fish can simulate the movement of a fish that swings its tail greatly after water separation, and is less likely to break under the action of an external force.

Finally, it should be noted that the above examples are only intended to illustrate and do not limit the technical scheme of the device, and the device is the above embodiment. Although described in detail with reference to, modifying the technical solutions described in the above embodiments, which should be understood by general engineers in this field, is also one of the technical features. It is also possible to replace parts or all with equivalents, and such modifications or replacements do not exclude the essence of the technical solution from the technical scope of each embodiment of the present invention.

100 1st transmission gear 200 2nd transmission gear 300 Upper wavy gear (1st wavy gear)
400 Downward wavy gear (2nd wavy gear)
500 Strut 600 Pedestal 700 Reset Spring 800 Output Gear 900 Output Rod 110 1st Drive Gear 120 2nd Drive Gear 130 Swing Arm 140 Control Board 150 Sensor 160 Charging Port 170 Switch 180 Movement Outer Shell 190 Movement Top Cover 210 Movement Bottom Cover 220 Battery 230 Imitation fish cover 240 Bio-imitation movement 250 Drive device 260 Swing arm connecting parts

In addition, the mimicking cover has an opening with a zipper or hook- and- loop fastener in the opening, which is open enough to allow the biomimetic movement to pass through.

Based on the above embodiment, the imitation fish cover 230 further comprises an opening, the opening comprising a zipper or a hook- and- loop fastener . The opening has an opening degree that allows the biomimetic movement 240 to pass through.

Claims (10)

A transmission mechanism including a transmission gear assembly, wherein the transmission gear assembly includes a first transmission gear and a second transmission gear that move in mesh with each other, and the second transmission gear is provided on a support column, and the support column is provided. Is provided with a reset spring on the side of the second transmission gear away from the first transmission gear, and the reset spring is provided so that the first transmission gear and the second transmission gear mesh with each other. The second transmission gear is moved relatively toward the first transmission gear, and further, in the second transmission gear, the first transmission gear and the second transmission gear are relatively separated from each other. A transmission mechanism characterized in that by keeping the state, the reset spring can overcome the acting force that moves axially along the support column under the action of an external force. The first transmission gear has a first wavy gear on one side of the second transmission gear, the second transmission gear has a second wavy gear on the other side of the second transmission gear, and the first wavy gear. The transmission mechanism according to claim 1, wherein the gear meshes with the second wavy gear under the action of the reset spring. The transmission mechanism according to claim 1 or 2, wherein the support column includes a pedestal, and a sleeve of the reset spring is arranged between the pedestal and the second transmission gear. The support column is provided so as to penetrate the first transmission gear and the second transmission gear, and the first transmission gear and the second transmission gear are connected to the support column to rotate, and the first transmission gear and the first transmission gear are connected to each other. The transmission mechanism according to any one of claims 1 to 3, wherein the transmission gear is fixed above the axis of the support column. Further including an output gear assembly, the output gear assembly includes an output rod and an output gear, the first transmission gear is an active gear, the second transmission gear is a passive gear, and the output gear is the first. 2. Any of claims 1 to 4, wherein the output rod is interlocked with the transmission gear, the output rod is connected to the output gear, and the output gear can rotate the output rod in an interlocking manner. Transmission mechanism described in. Including a first drive gear and a second drive gear, the first drive gear is used to mesh with a gear on the output shaft of the drive, and the second drive gear is used to mesh with the first transmission gear. The transmission mechanism according to any one of claims 1 to 5, wherein the first drive gear is connected to the second drive gear and swivels at the same time. An imitation fish having an imitation cover and a biomimetic movement, wherein the biomimetic movement is installed in the imitation cover, and the biomimetic movement is the outer shell and swing arm of the movement and any one of claims 1 to 6. The transmission mechanism according to the above is provided, the transmission mechanism is installed in the outer shell of the movement, and the output rod of the transmission mechanism penetrates the outer shell of the movement and is connected to the swing arm. Imitation fish. The movement outer shell includes a movement upper lid provided at the upper end portion of the movement outer shell and a movement lower lid provided at the lower end portion of the movement outer shell, and a battery, a control board and the transmission mechanism are provided in the movement outer shell. 7. The seventh aspect of the invention is characterized in that the battery, the control board, and the drive device are provided with mounting grooves for fixing the battery, the control board, and the drive device to the movement upper lid and the movement lower lid, respectively. Imitation fish. A protrusion is provided on the outer shell of the movement, a groove corresponding to the protrusion is provided on the swing arm connecting part of the swing arm, both ends of the output rod on the output gear assembly are projected, and the protrusion and the groove The imitation fish according to claim 7 or 8, wherein the fish are linked together. The claim is characterized in that the imitation cover opening is provided, the opening is provided with a zipper or a velcro (registered trademark), and the opening has an opening degree capable of passing the biomimetic movement. The imitation fish according to any one of 7 to 9.

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