JPH0422783Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention transmits the power of a drive source such as a motor to the leg body etc. through a deceleration mechanism, and allows animals (for example, dogs) to move in a manner similar to that of animals. Regarding toys.

``Prior art'' Conventional animal toys of this type include, for example, the
As disclosed in Japanese Patent No. 23213, the power of the motor is generally decelerated by a deceleration mechanism and then transmitted to a crank member, and the left and right legs are actuated by the clutch member to perform a walking motion. It is.

``Problem that the invention aims to solve'' However, in the past, there was no measure to cut off the power in the event of an overload in the power transmission system between the motor and the leg, so obstacles could occur during walking. Even in the event of a collision, the motor's power would continue to be transmitted to the legs, causing the motor to continue to be overloaded and burn out, which was also dangerous.

In view of these problems, the present invention is designed so that when the legs or the like become overloaded, the clutch is disengaged and the power transmission from the drive source such as the motor is cut off.

``Means for Solving Problems'' In other words, the present invention is an animal toy that walks by transmitting rotation from a drive source such as a motor to a walking axis and rotating its legs. a first face latch that is slidably mounted in the axial direction; a second face latch that is fixed to the walking axis in opposition to the first face latch; and a second face latch that is wound around the walking axis. and a coil spring that urges the first face latch to engage with the second face latch, forming a slip clutch, and a gear that transmits rotation between the first face latch and the drive source. It has been established.

``Function'' Therefore, when an overload is applied to the leg body, etc., the first face latch and the second face latch become disengaged and slippage occurs between them, causing the first face latch to It becomes a state of idle rotation and no rotation is transmitted to the second face latch and the walking axis.

``Example'' Below, the illustrated example in which the present invention is applied to a dog toy will be described in detail.

As shown in Figs. 1 to 3, this dog toy has a front body frame 1, a rear body frame 2, left and right front leg bodies 3, left and right hind leg bodies 4, a neck body 5, a head body 6, and a jaw body 6a. The tail piece 7 is used as a skeleton, and the entire body is covered with a dog-shaped outer skin 8, and drive mechanisms for operating these are provided in the front trunk frame 1 and the rear trunk frame 2.

The front body frame 1 is box-shaped with an open rear end, and the rear body frame 2
are box-shaped with an open front end, and as shown in FIG. The center of the mating portion is pivotally connected at the upper and lower pivots 11, and the front body frame 1 is connected to the rear body frame 2 so as to be rotatable left and right about the pivots 11. The pivot 11 is passed through the shaft holes 12, 13 of the stepped portions 9, 10, and is prevented from being removed with a screw 14.

The upper end of the front leg body 3 is bent in an inverted L shape, and the rear leg body 4 is bent in a dogleg shape at its upper and lower intermediate portions. A front leg walking shaft 15 is mounted horizontally between the left and right side plates of the front trunk frame 1, and a rear leg walking shaft 16 is mounted horizontally between the left and right side plates of the rear trunk frame 2. As shown in FIG. 5, the left and right front leg bodies 3 are
The rear leg body 4 is connected by a crank pin 18 to the free ends of left and right walking cranks 17 fixed to both left and right ends of the front leg walking axis 15.
The front and rear legs 3 and 4 are connected by a crank pin 20 to the free ends of left and right walking cranks 19 fixed to both left and right ends of the 6, and these front and rear legs 3 and 4 have a front leg walking axis 15 and a rear leg walking axis 16, which will be described later. As a result, they rotate as shown by the chain line in the same figure.

Further, as shown in the same figure, between the left and right side plates of the front trunk frame 1, a hand drive shaft 21 for performing hand motions on the dog is horizontally mounted, as will be described later. There is a sitting drive shaft 2 for performing sitting motion.
2 are mounted horizontally, and these drive shafts 21 and 22 are respectively connected to the front leg body 3 on the right side or the rear leg bodies 4 on both the left and right sides via a slider crank mechanism. That is, a slide pin 25 that slides along the slit 24 of the front leg body 3 on the right side is provided at the free end of one hand crank 23 fixed to the right end of the hand drive shaft 21. Left and right sitting cranks 2 fixed to both left and right ends of the sitting drive shaft 22
A slide pin 28 that slides along the slit 27 of the left and right rear leg bodies 4 is provided at the free end of the rear leg body 6 .

As shown in FIG. 6, the neck body 5 is pivotally mounted on the front end of the upper plate of the front body frame 1 by a pivot 29 so as to be horizontally rotatable from side to side. As shown in FIGS. 1 and 3, the jaw body 6a is pivotably mounted on a shaft 30 so as to be movable up and down, and the jaw body 6a is attached to an arm portion 3 at the base end thereof.
1 is pivotally connected to the neck body 5 via a shaft 32 so as to be vertically movable. The lower end of this arm portion 31 is connected to a flange 34 of a ringing electromagnet 33 disposed inside the neck body 5, and the upper end is connected to a spring 34.
5, it is connected to a pin 36 at an eccentric position of the head body 6.

Therefore, when the electromagnet 33 is activated and the plunger 34 is attracted, the jaw body 6a rotates downward around the shaft 32, and at the same time, the head body 6 rotates upward around the shaft 30. By repeatedly turning the electromagnet 33 on and off, it is possible to perform an action similar to the way a dog barks by raising and lowering its head and opening and closing its mouth.

As shown in FIG.
7 to the upper surface of the rear fuselage 2 and pins 37a, 37b.
When the front body frame 1 rotates to the right with respect to the rear body frame 2 as shown by the chain line in the figure, it also rotates to the right and the head body 6 is rotated to the right. turn to

The lower end of the tail piece 7 is pivotally supported on the rear end of the upper plate of the rear body frame 2 by a pin 38 so as to be swingable from side to side.

A cavity 39 in which the front body frame 1 and the rear body frame 2 communicate with each other
A battery 40 is arranged inside. This battery 40 is supported by front and rear battery holders 42 which are rotatably supported by pivots 41 on the bottom plates of the front and rear body frames 1 and 2, respectively.
The above-mentioned rotation of the front body frame 1 is performed without any problem. Inside the cavity 39, a walking motor 43 and a sitting motor 44 are arranged on the rear trunk frame 2 side, and a rotation (carrying) motor 45 and a hand motor 46 are arranged on the front trunk frame 1 side, respectively. The walking motor 43 is connected to the rear leg walking shaft 16 via a walking deceleration mechanism 47 and a sliding clutch 48, and the sitting motor 44 is connected to the sitting driving shaft 16 via a sitting deceleration mechanism 49. The hand motor 46 is connected to the hand drive shaft 21 via a hand speed reduction mechanism 50, and the rotation motor 45 is connected to the rear trunk shaft 22 through a rotation speed reduction mechanism 51 and a link 52. It is connected to frame 2, and the connection relationship between them will be explained in sequence below.

First, as shown in FIGS. 1 to 3 and 7, the walking deceleration mechanism 47 includes a small gear 53 fixed to the motor shaft of the walking motor 43, a large gear 54 that meshes with the small gear 53, and a large gear 54 that meshes with the small gear 53. A middle gear 55 that rotates around the outer circumference of the rear leg walking shaft 16 integrally with the rear leg walking shaft 16, a large gear 56 that meshes with the middle gear 55, and a middle gear 57 that rotates around the outer circumference of the sitting drive shaft 22 together with the large gear 56. , a large gear 58 that meshes with the middle gear 57 and rotates around the outer circumference of the rear leg walking axis 16.
The rotation of the walking motor 43 is decelerated by this walking deceleration mechanism 47 and transferred to the large gear 5.
8. The meshing clutch 48 includes a first face latch 48a that can rotate around the outer circumference of the rear leg walking shaft 16 together with the large gear 58 and can also slide in the axial direction of the rear leg walking shaft 16, and
and a second face latch 48b that is fixed to and rotates together with the second face latch 48b. It is biased to mesh with the face latch 48b.

Therefore, after the rotation of the walking motor 43 is decelerated by the walking deceleration mechanism 47, it is normally transmitted to the rear leg walking shaft 16 via the dog clutch 48. However, when the dog toy collides with an obstacle while walking and the load acting on the hind leg walking axis 16 becomes higher than a predetermined value, slippage occurs between the two face latches 48a and 48b in the dog clutch 48. As a result, the rotation of the walking motor 43 is not transmitted to the rear leg walking shaft 16.

A bevel gear 60 is fixed to the intermediate portion of the rear leg walking shaft 16, and the bevel gear 60 meshes with a bevel gear 62 pivotally supported on the upper plate of the rear trunk frame 2 by a vertical shaft 61. A drive pulley 63 is fixed to the upper part of this vertical shaft 61, and the front body frame 1
An intermediate pulley 64 is pivotally supported directly below the upper pivot point (upper pivot 11) of the rear fuselage frame 2 and the rear fuselage frame 2, and a timing belt 65 is stretched between these pulleys 63 and 64. Furthermore, a driven pulley 67 is mounted on a vertical shaft 66 bearing at the front end of the upper plate of the front body frame 1.
is fixed, and the driven pulley 67 and the intermediate pulley 64
A timing belt 68 is also stretched between them. A bevel gear 69 fixed to the lower end of this vertical shaft 66 meshes with a bevel gear 70 fixed to the middle part of the front leg walking axis, and the rotation of the walking motor 43 is also transmitted to this front leg walking axis 15.
The left and right rear legs 4 and the left and right front legs 3 simultaneously rotate as described above to perform a walking motion. Each leg 3,
A certain degree of phase difference between the meshing clutches 48 and 48
This is eliminated by the meshing of both face latches 48a and 48b at.

Next, the sitting reduction mechanism 49 has a large gear 72 that meshes with a small gear 71 fixed to the motor shaft of the sitting motor 44, and rotates around the outer circumference of the rear leg walking shaft 16 together with the large gear 72. middle gear 73,
A large gear 74 that meshes with the middle gear 73; a middle gear 75 that sits integrally with the large gear 74 and rotates around the outer periphery of the drive shaft 22; a large gear 76 that meshes with the middle gear 75; A middle gear 77 that rotates around the outer periphery of the rear leg walking shaft 16, a large gear 78 that meshes with this middle gear 77, a middle gear 79 that sits together with the large gear 78 and rotates around the outer periphery of the drive shaft 22, and this middle gear 79. A large gear 80 meshes with the rear leg walking axis 1 integrally with the large gear 80.
6, and a large gear 82 that meshes with this middle gear 81 and is fixed to the sitting drive shaft 22. transmitted to.

When this sitting motor 44 rotates normally and the sitting drive shaft 22 rotates clockwise in FIG.
The sitting crank 26 rotates upward as shown by the chain line from the almost vertical state shown by the solid line, and due to the sliding crank action, the rear leg bodies 4 on both the left and right sides gradually move upward about the hind leg walking axis 16 as a fulcrum. Rotate to. As a result, the rear end of the rear trunk frame 2 gradually descends, and the front trunk frame 1 and the rear trunk frame 2 as a whole are raised diagonally forward with respect to the ground surface, resembling a dog sitting down. It becomes a form.

The hand speed reduction mechanism 50 includes a large gear 84 that meshes with a small gear 83 fixed to the motor shaft of the hand motor 46, a middle gear 85 that rotates around the outer circumference of the front leg walking axis 15 together with the large gear 84, a large gear 86 meshing with the medium gear 85;
a middle gear 87 that rotates around the outer periphery of the manual drive shaft 21 together with a large gear 8 that meshes with the middle gear 87;
8. A middle gear 89 that rotates around the outer circumference of the front leg walking shaft 15 together with the large gear 88; a large gear 90 that meshes with the middle gear 89 and is fixed to the hand drive shaft 21;
The rotation of the hand motor 46 is decelerated and transmitted to the hand drive shaft 21.

This hand motor 46 rotates forward and the hand drive shaft 2
1 rotates clockwise in FIG. 8, the hand crank 23 fixed to its right end rotates upward, and the slider crank action causes the right front leg body 3 to rotate around the front leg walking axis 15 as a fulcrum. It rotates upwards and takes on the shape of a dog's hand. When the hand motor 46 reverses, the right front leg 3 rotates downward and returns to the same standing position as the left front leg 3. When the sitting motor 44 reverses, the rear leg 4 returns to its original position. Because of the rotation, the rear fuselage frame 2 rises,
The state returns to the state shown in FIG. 5 in which both the front and rear legs 3, 4 stand up.

As shown in FIGS. 2, 6, and 9, the rotating deceleration mechanism 51 is attached to a rotating frame 92 rotatably attached to the lower side of the upper plate of the front body frame 1 about a pivot 91. , is attached together with the rotation motor 45. The rotation speed reduction mechanism 51 includes a large gear 94 that meshes with a small gear 93 fixed to the motor shaft of the rotation motor 45, an intermediate gear 95 that rotates integrally with the large gear 94, and an intermediate gear 95 that meshes with the intermediate gear 95. large gear 96,
A middle gear 97 that rotates integrally with this large gear 96,
It consists of a large gear 98 that meshes with the medium gear 97, a medium gear 99 that rotates integrally with the large gear 98, a large gear 100 that meshes with the medium gear 99, and a pinion 101 that rotates integrally with the large gear 100. The rotation of the row motor 45 is decelerated and transmitted to the pinion 101. This pinion 101 is
Rack 5 formed on the lower surface of the link 52
It meshes with 2a. This engagement position is located at the pivot point (the pivot 11) between the front body frame 1 and the rear body frame 2.
It is eccentric to the right diagonally forward. Also, link 5
The rear end of the rear fuselage frame 1 is horizontally rotatably connected to the upper plate of the rear fuselage frame 1 by a pivot 102 diagonally rearward to the right of this pivot point.

Therefore, when the pinion 101 is rotated as described above by normal rotation of the rotation motor 45, the link 52 that engages the rack 52a with the pinion 101 is located at a position eccentric to the pivot point. Because it is towed toward the pinion 101 side, a clockwise moment about this pivot point is generated in the front fuselage frame 1.
The front trunk frame 1 gradually rotates to the right as shown by the chain line from the state shown by the solid line in FIG. Repeated rotation as described above results in a clockwise walking motion. Also at this time, the head body 6
Since the neck body 5 is pushed forward by the link 37 and rotated clockwise as well, the dog gradually changes its direction to the right in synchronization with the movement of the front body frame 1, and the dog as a whole turns clockwise. The action will be like turning around. When the walking motor 45 reverses, the link 52 is pushed rearward by the pinion 101, so the front body frame 1 rotates back and returns to the solid line state where it is straight with the rear body frame 2.

During walking due to the rotation of the hind legs 4 and front legs 3,
Due to the rotation of the vertical shaft 61, the cam 10 at the upper end thereof
3 is a lever 1 at the rear end of the upper plate of the rear fuselage frame 2.
04 is repeatedly rotated, and this lever 104 causes the tail piece 7 to swing repeatedly from side to side, resulting in an action similar to that of a dog repeatedly wagging its tail.

As mentioned above, walking motion by rotating the front and rear legs 3 and 4, sitting motion by rotating the rear leg 4 significantly upward, hand motion by raising the right front leg 3, and front The turning operation performed by rotating the trunk frame 1 to the right is detected electrically by switches or the like installed corresponding to each mechanism. The entire operation, including these various operations, is performed using a speech synthesis LSI or
It is controlled by a microcomputer including a CPU, and automatically performs the corresponding actions according to human voices such as ``walk,''``sit,''``hands,'' and ``carry.'' There is. Further, a speaker 105 is arranged at the front end of the front body frame 1, and a dog-like voice is automatically generated simultaneously with the above-described movements of the head body 6 and jaw body 6a.

As a rotating mechanism (rotating mechanism) for rotating the front body frame 1 relative to the rear body frame 2, a winding drum 106 is used instead of the pinion 101 as shown in FIG. By winding up the string 108 fixed to the rear body frame 2 with the support pin 107 using the winding drum 106, the front body frame 1
It is also possible to adopt a structure that generates a moment about the pivot 11. In this case, the rotational return of the front body frame 1 is performed by a spring 109 stretched between it and the rear body frame 2.

Further, in the above embodiment, the front body frame 1 is rotated to the right, but it may also be configured to be able to rotate to the left or both left and right sides. Row motor 45
may be omitted, and a structure may be adopted in which the walking motor 43 is operated by the power of the walking motor 43 by being connected to the walking drive mechanism via a clutch.

Further, in the above embodiment, the dog clutch 48
is provided in the walking drive mechanism, but it may also be provided in the hand drive mechanism, sitting drive mechanism, or rotation drive mechanism.

Furthermore, it goes without saying that the present invention can also be applied to animal toys other than dogs.

"Effects of the Invention" As detailed above, according to the present invention, when the leg body etc. is in an overloaded state, the first face latch and the second face latch become disengaged, causing a gap between them. Since slipping occurs and the first face latch becomes idling, rotation is no longer transmitted to the second face latch and the walking axis, so burnout of the motor etc. can be prevented and it is also safe. Further, the phase difference between the legs can be eliminated to some extent by the engagement of the first face latch and the second face latch.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a longitudinal sectional view, Fig. 2 is a cross-sectional view along the line of Fig. 1, Fig. 3 is a partially cutaway rear view, and Fig. 4 is a front trunk frame. Fig. 5 is a side view showing the walking motion of the front and rear legs, Fig. 6 is a plan view showing the rotational movement, and Fig. 7 is a plan view of the walking drive mechanism. 8 is a side view showing the sitting and hand motions, FIG. 9 is an enlarged sectional view of the rotating drive mechanism, and FIG. 10 is a plan view of another example. 3... Front leg body, 4... Hind leg body, 16... Back leg walking axis, 43... Walking motor, 48a... First face latch, 48b... Second face latch, 53- 58...Gear, 59...Coil spring.

Claims (1)

[Scope of utility model registration request] In animal toys that walk by transmitting rotation from a drive source such as a motor to a walking axis and rotating the legs,
a first face latch rotatably attached to the walking axis and slidable in the axial direction; a second face latch fixed to the walking axis opposite to the first face latch; A slip clutch is constituted by a coil spring that is wound around the walking shaft and biases the first face latch to engage the first face latch with the second face latch;
An animal toy characterized in that a gear for transmitting rotation is provided between a face ratchet and a drive source.