JP5253831B2 - Model toy and its drive unit - Google Patents

Description

  The present invention relates to a model toy and a drive unit thereof, and more particularly to a model toy such as a model tank capable of operating a turret and a gun barrel.

Patent Document 1 proposes a conventional model toy that drives a turret (turret) and a barrel.
In Patent Document 1, a model toy simulating a turret comprising a turret body, a turret support portion on which the turret body is pivotably mounted, and a barrel provided in a swingable manner on the turret body, the turret The support portion includes a guide portion that contacts a part of the barrel when the turret body is attached and swings the turret in response to turning of the turret body with respect to the turret support portion.
JP 2007-306989 A

  However, in Patent Document 1, the gun barrel swings in conjunction with the turning of the turret by the guide portion that operates as a cam, and the gun barrel and the turret cannot be arbitrarily moved simultaneously. Furthermore, in the structure proposed in Patent Document 1, it is not possible to move only the barrel when the turret is not turning.

Accordingly, an object of the present invention is to provide a model toy provided with a drive unit capable of rotating a turret or the like and tilting the barrel or the like independently of the rotation of the turret or the like.
Furthermore, it is also an object to provide a general-purpose drive unit applicable to model toys such as various model tanks having different external shapes by providing a rotation mechanism such as a turret and a tilting mechanism such as a barrel with an integral drive unit. To do.

  In order to solve the above problems, a model toy of the present invention is a model toy comprising a main body, a turret rotatably attached to the main body, and a gun barrel mounted on the turret, for rotating the turret. A rotating body, a first motor that drives the rotating body, a shaft that can linearly reciprocate to tilt the barrel, a second motor that drives the shaft, the shaft, and the first motor And a drive unit having a housing for accommodating the second motor.

  In the model toy, the gun barrel is coupled to the shaft by a magnetic force, and the gun barrel is tilted as the shaft moves linearly. The model toy includes a shaft driving gear rotated by the second motor and a shaft screw portion provided on the shaft and engaged with the shaft driving gear, so that the shaft moves linearly. . In the model toy, the shaft drive gear includes an inner locking portion formed on the center opening side, and the inner locking portion engages with the shaft screw portion. In the model toy, the drive unit includes a first elastic member that holds the first end side of the shaft in the housing, and a second elastic member that holds the second end side of the shaft in the housing. Prepare. In the model toy, the rotating body is exposed over the entire circumference of the side surface of the drive unit. In the model toy, a projecting piece for engaging with the rotating body of the drive unit is formed on the turret, and the rotating body rotates the turret via the projecting piece.

  Furthermore, the drive unit of the present invention includes a rotating body, a first motor that rotates the rotating body, a linearly reciprocable shaft, a second motor that drives the shaft, the shaft, and the first A motor and a housing for housing the second motor.

  The drive unit includes a shaft drive gear that is rotated by the second motor and a shaft screw portion that is provided on the shaft and engages with the shaft drive gear, whereby the shaft moves linearly. . In the drive unit, the shaft drive gear includes an inner locking portion formed on the center opening side, and the inner locking portion engages with the shaft screw portion. The drive unit includes a first elastic member that holds the first end of the shaft in the housing, and a second elastic member that holds the second end of the shaft in the housing. In the drive unit, the rotating body is exposed over the entire side surface of the drive unit. In the drive unit, the drive unit is fixed to a vehicle body of a model tank, the rotating body rotates a turret of the model tank, and the shaft tilts a gun barrel provided in the turret. In the drive unit, a projecting piece for engaging with the rotating body of the drive unit is formed on the turret, and the rotating body rotates the turret via the projecting piece.

  In order to move linearly without rotating the shaft, the shaft may have a non-circular cross section, and the housing may be provided with a non-circular hole for receiving the non-circular cross section and holding the shaft. In the present invention, as the non-circular shape, in addition to a polygon such as an ellipse or a hexagon, a shape in which a part of a circle is a plane can be used.

  Also, the inner locking portion (inner screw portion) is not provided inside the shaft driving gear, the shaft driving gear is configured to engage with the non-circular shape portion, the shaft is rotated by the second motor, and linear A housing screw portion that is held so as to be allowed to move and is screwed with the shaft screw portion may be provided in the housing. In this way, the shaft moves linearly while rotating.

  More specifically, in the model toy, the drive unit is engaged with a drive gear engaging portion having a non-circular cross section formed on the shaft drive gear and the drive gear engaging portion formed on the shaft. A shaft engaging portion having a non-circular cross-section, a housing screw portion formed in the housing, and a shaft screw portion formed in the shaft and screwed into the housing screw portion. The rotation of the gear causes the shaft to rotate via the drive gear engagement portion and the shaft engagement portion, and the shaft rotates linearly while the housing screw portion and the shaft screw portion are screwed together. Move on.

  In the drive unit, a non-circular cross-section drive gear engaging portion formed on the shaft drive gear, and a non-circular cross-section shaft engagement formed on the shaft and engaging with the drive gear engagement portion. , A housing screw part formed on the housing, and a shaft screw part formed on the shaft and screwed with the housing screw part, and the drive gear engagement is caused by rotation of the shaft drive gear The shaft is rotated via the shaft and the shaft engaging portion, and the shaft is linearly moved while being rotated by screwing of the housing screw portion and the shaft screw portion.

  According to the model toy of the present invention, the turret can be rotated by the rotating body by the driving unit, the barrel can be tilted by the shaft so as to be reciprocally movable, and the rotating body and the shaft can be driven independently. Further, according to the drive unit of the present invention, it is possible to provide a general-purpose drive unit that can rotate the rotating body and reciprocate the shaft, and can drive the rotating body and the shaft independently.

An embodiment in which a model toy according to the present invention and its drive unit are applied to a model tank will be described with reference to FIGS.
(Overall structure)
The overall structure of the model tank according to this embodiment will be described with reference to FIGS. 1 and 2, the turret is illustrated as a perspective view in order to explain the internal structure of the turret. The model tank includes a vehicle body (main body) 100, a turret 300 that is attached to the vehicle body 100 so as to be rotatable (turnable), and a drive unit 500 that is attached to the vehicle body 100 and rotates the turret 300. A gun barrel 301 is attached to the turret 300 in a tiltable manner within a predetermined angle range, and the gun barrel 301 is also driven by the drive unit 500. Although not shown, the drive unit 500 is fixed to the center of the vehicle body 100 with screws or the like.

(Drive unit structure)
The outer shape of the drive unit 500 is a substantially disk shape as shown in the perspective view of FIG. 3, and the upper end (first end) of the vertical movement shaft 513 is exposed at the center of the upper surface, and the entire circumference of the side surface is exposed. An annular turret gear (rotary body) 503 is exposed.

  As shown in FIGS. 3 and 4, the housing of the drive unit 500 includes an upper case 501, an annular turret gear 503, a unit main body 505, and a lower case 507. The upper case 501 and the lower case 507 are each fixed to the unit body 505 with screws or the like. The first motor 509 and the second motor 511 are held between the unit main body 505 and the lower case 507. As will be described later, the first motor 509 drives the turret gear 503, and the second motor 511 moves the vertical movement shaft 513 up and down.

  The turret gear 503 is placed on a plurality of protrusions 505 a arranged in an annular shape on the outer peripheral inclined surface of the unit main body 505, and is rotatably held between the upper case 501 and the unit main body 505. An outer tooth portion 503 a made up of a plurality of protrusions is arranged in an annular shape on the outer periphery of the turret gear 503, and an inner tooth portion 503 b is arranged in an annular shape on the inner periphery of the turret gear 503.

  The vertical movement shaft 513 is a long, thin metal rod having a hexagonal cross section, and a tubular shaft screw portion 513a is press-fitted or bonded to the central portion in the longitudinal direction so as to be integrated with the vertical movement shaft 513. . The shaft screw portion 513a is engaged with a shaft drive gear 603 described later. Further, an upper spring (first spring) 515 having a diameter larger than that of the shaft is disposed on the upper end side (first end) of the vertical movement shaft 513. The upper spring 515 includes an inner surface of the upper case 501 and a shaft screw. The vertical movement shaft 513 is elastically held between the upper part of the part 513a.

  Further, a lower spring 517 (second spring) having a diameter larger than that of the shaft is arranged on the lower end (second end) side of the vertical movement shaft 513, and the lower spring 517 includes an inner surface of the lower case 507, a shaft screw, and the like. The vertical movement shaft 513 is elastically held between the lower part of the part 513a.

  As shown in FIGS. 4 and 5, a first pinion gear 509a is attached to the rotating shaft of the first motor 509, and the driving force of the first motor 509 is transmitted to the speed reduction mechanism 600 via the first pinion gear 509a. Then, it is transmitted to the outer gear 601 disposed outside the unit main body 505. Further, the outer gear 601 engages with the inner tooth portion 503 b of the turret gear 503. Therefore, the rotation of the first motor 509 is decelerated by the reduction mechanism 600 and rotates the turret gear 503 via the outer gear 601. The outer teeth 503b of the turret gear 503 are engaged with a projecting piece end portion 303a of the turret 300 described later, so that the turret 300 is rotated by the turret gear 503.

  A second pinion gear 511a is attached to the rotation shaft of the second motor 511, and the driving force of the second motor 511 is transmitted to the speed reduction mechanism 600 via the second pinion gear 511a and arranged at the center of the unit body 505. Is transmitted to the shaft drive gear 603. The shaft drive gear 603 has a cylindrical portion concentric with the center of rotation, and an inner screw portion 603a (see FIG. 6) of the shaft drive gear that engages (screws in) the shaft screw portion 513a on the inner surface of the cylindrical portion. ) Is formed. Therefore, the rotation of the second motor 511 is decelerated by the speed reduction mechanism 600 to rotate the shaft drive gear 603, and the vertical movement shaft 513 is moved up and down without rotating as the shaft drive gear 603 rotates.

  In addition, although the deceleration mechanism of the 1st motor 509 and the 2nd motor 511 was all expressed with the code | symbol 600, the deceleration mechanism of the 1st motor 509 and the deceleration mechanism of the 2nd motor 511 are independent, and these deceleration mechanisms are , Composed of a plurality of general gears.

(Operation of drive unit)
The operation of the vertical movement shaft 513 mounted on the drive unit 500 will be described with reference to the cross-sectional views of FIGS. 6 to 8, the first motor 509, its speed reduction mechanism, and the outer gear 601 are not shown, and the vertical movement shaft 513, the upper spring 515, and the lower spring 517 are not shown in cross-sectional view, and their external shapes are shown in cross section. This is shown in the figure.

  FIG. 6 shows a state in which the vertical movement shaft 513 is at the lower position in the movement direction. In FIG. 6, the upper end of the shaft screw portion 513a of the vertical movement shaft 513 is in a state of starting to engage with the lower end of the shaft drive gear inner screw portion 603a (inner locking portion). In this state, the upper spring 515 is not compressed and is free, while the lower spring 517 is compressed by the lower end of the shaft screw portion 513a. In this state, the vertical movement shaft 513 is always pressed upward by the lower spring 517. By this pressing force, the upper end of the shaft screw portion 513a and the lower end of the shaft drive gear inner screw portion 603a are kept in a state of starting to engage with each other. If the lower spring 517 is not provided, the upper end of the shaft screw portion 513a and the lower end of the shaft drive gear inner screw portion 603a are unlikely to come into contact with each other, and engagement may be difficult.

  When the shaft drive gear 603 rotates in the first direction from the state of FIG. 6, the vertical movement shaft 513 moves upward while rotating, and the lower spring 517 expands, while the upper spring 515 is compressed and moves up and down. The shaft 513 moves to the center position shown in FIG. When the shaft drive gear 603 further rotates in the first direction from the center position in FIG. 7, the vertical movement shaft 513 moves further upward while rotating, and the upper end of the lower spring 517 is connected to the shaft drive gear inner screw portion 603a. While being free from the lower end, the upper spring 515 is compressed and the vertical movement shaft 513 stops at the upper position in FIG.

  Thus, the rotation of the shaft driving gear 603 is transmitted to the vertical movement shaft 513, and the vertical movement shaft 513 moves up and down. In order to move the vertical movement shaft 513 downward, the shaft drive gear 603 may be rotated in the second direction opposite to the first direction. The shaft housing hole 507a of the lower case 507 has a hexagonal cross section, and receives the hexagonal cross section of the vertical movement shaft 513 so that the vertical movement shaft 513 does not rotate. When the shaft 513 rotates together with the shaft drive gear 603, the vertical movement shaft 513 does not move up or down, or the vertical movement becomes insufficient, so the vertical movement shaft 513 needs to be held so as not to rotate.

(Cantilever tilt structure)
Here, returning to FIGS. 1 and 2, the tilting structure of the gun barrel 301 by the drive unit 500 will be described. The turret 300 is disposed so that the gun barrel 301 can tilt, and the gun barrel 301 includes an inner end portion 301 a located inside the turret 300 and an outer end portion 301 b located outside the turret 300. Since the portion from the inner end portion is pivotally supported by the turret 300 between the portion 301a and the outer end portion 301b, the gun barrel 301 can tilt with respect to the turret 300 like a lever. A magnet is attached to the inner end 301a of the gun barrel 301. This magnet is coupled to the upper end of a metal vertical movement shaft 513, and the inner end moves up and down as the shaft moves up and down. . Further, since the vertical movement shaft 513 located on the vehicle body 100 side and the inner end 301a of the gun barrel 301 located on the turret 300 side are magnetically coupled, the turret 300 can be easily detached from the vehicle body 100, and the turret Even when the turret is rotated at a certain angle or while rotating the turret, the magnetic coupling is always maintained, so that the barrel can be tilted in an arbitrary state.

  That is, when the vertical movement shaft 513 and the inner end 301a move from the bottom to the top, the outer end 301b moves from the top to the bottom in the vertical plane. Conversely, when the vertical movement shaft 513 and the inner end 301a move from the top to the bottom, the outer end 301b moves from the bottom to the top in the vertical plane. In this way, the gun barrel 301 tilts (tilts) as the vertical movement shaft 513 moves up and down.

(Rotating structure of turret)
Furthermore, a rotating structure of the turret by the drive unit 500 will be described with reference to FIG. A cylindrical portion is formed at the bottom of the turret 300, and this cylindrical portion is rotatably inserted into an opening formed in the vehicle body. As shown in FIG. 2, a plurality of protruding pieces 303 are formed on the inner surface of the cylindrical portion, the proximal end portion of the protruding piece 303 protrudes in the radial direction, and the central portion of the protruding piece 303 is the proximal end. Connected to the inner surface of the cylindrical portion, and extends along the inner surface of the cylindrical portion while maintaining a predetermined distance from the inner surface of the cylindrical portion.

  The projecting piece end portion 303a extends in a direction parallel to the rotation axis of the cylindrical portion. As shown in FIG. 2, the projecting piece end portion 303 a meshes with the external tooth portion 503 a of the turret gear 503 of the drive unit 500. Therefore, when the turret gear 503 rotates, the external tooth portion 503a engages with the projecting piece end portion 303a and rotates it, so that the turret 300 rotates. Since the projecting piece 303 is elastically held between the turret 300 and the drive unit 500 by the central portion thereof, even if an impact or the like is applied from the vehicle body 100 or the turret 300, it can be absorbed.

(Control mechanism)
As shown in FIG. 9, a reception / control unit 200 is disposed inside the vehicle body 100, and the control unit 200 is connected to the receiver antenna 203. The receiver antenna 203 receives a radio control signal transmitted from a radio control unit (not shown) and transmits the radio control signal to the control unit 200. The control unit 200 controls each motor based on the control signal. In addition, a battery 209 is connected to the control unit 200.

  The control unit 200 includes a left drive wheel motor 205 for driving the left drive wheel, a right drive wheel motor 207 for driving the right drive wheel, a first motor 509 for rotating the turret 300, A second motor 511 for tilting the gun barrel 301 is connected. These four motors are driven by the control unit 200 in forward, reverse, and stop modes, respectively.

  Note that the vertical direction in the present embodiment is a case where the longitudinal direction of the vertical movement shaft 513 is arranged vertically, and the vertical movement shaft 513 is not limited to vertical movement in the vertical direction, but in the longitudinal direction. Includes everything that moves linearly to move forward and backward.

  Further, although the present invention has been described as being applied to a model tank as the present embodiment, the present invention is not limited to a model tank. For example, a turret (turret) such as a model battleship or a model fortress, or a neck rotates. In addition, the present invention can be applied to a toy that swings or swings its head or the like, or a toy that simulates a bird or the like whose neck or the like rotates and beaks tilt.

1 is a side view of a model tank according to an embodiment of the present invention. It is an upper perspective view of the model tank of FIG. It is a perspective view of the drive unit concerning the embodiment of the present invention. FIG. 4 is an exploded view of the drive unit of FIG. 3. FIG. 4 is an upper perspective view in a state where an upper case is removed from the drive unit of FIG. 3. FIG. 4 is a cross-sectional view of the drive unit of FIG. 3, wherein the vertical movement shaft is in a lower position. FIG. 4 is a cross-sectional view of the drive unit of FIG. 3, in which the vertical movement shaft is in the center position. FIG. 4 is a cross-sectional view of the drive unit of FIG. 3, wherein the vertical movement shaft is in an upper position. It is a control block diagram of the model tank of FIG.

Explanation of symbols

100 Car body 300 Turret 301 Gun barrel 301a Inner end portion 301b Outer end portion 303 Projection side 303a Projection end portion 500 Drive unit 501 Upper case 503 Turret gear 503a Outer teeth 503b Inner teeth 505 Unit main body 507 Lower case 507a Shaft receiving hole 509 First motor 509a First pinion gear 511 Second motor 511a Second pinion gear 513 Vertical movement shaft 513a Shaft screw portion 515 Upper spring 517 Lower spring 600 Deceleration mechanism 601 Outer gear 603 Shaft drive gear 603a Shaft drive gear inner screw portion

Claims (14)

In a model toy comprising a main body, a turret rotatably attached to the main body, and a gun barrel mounted on the turret,
A rotating body for rotating the turret, a first motor for driving the rotating body, a shaft capable of linear reciprocation to tilt the gun barrel, a second motor for driving the shaft, A drive unit having a shaft and a housing for housing the first motor and the second motor;
The model toy characterized in that the rotating body is exposed over the entire circumference of the side surface of the drive unit.   The model toy according to claim 1, wherein the gun barrel is coupled to the shaft by a magnetic force, and the gun barrel is tilted with a linear movement of the shaft.   3. The model toy according to claim 1, further comprising: a shaft driving gear rotated by the second motor; and a shaft screw provided on the shaft and engaged with the shaft driving gear. Is a model toy that moves linearly.   4. The model toy according to claim 3, wherein the shaft driving gear includes an inner locking portion formed on a center opening side thereof, and the inner locking portion engages with the shaft screw portion. A model toy.   5. The model toy according to claim 2, wherein the drive unit includes a first elastic member that holds the first end side of the shaft in the housing, and a second end side of the shaft. A model toy comprising: a second elastic member held in the housing.   The model toy according to any one of claims 1 to 5, wherein a projecting piece for engaging with the rotating body of the drive unit is formed on the turret, and the rotating body is interposed through the projecting piece. A model toy characterized by rotating the turret.   A rotating body, a first motor that rotates the rotating body, a linearly reciprocable shaft, a second motor that drives the shaft, and the shaft, the first motor, and the second motor are housed. A drive unit comprising a housing, wherein the rotating body is exposed over the entire circumference of a side surface of the drive unit.   The drive unit according to claim 7, further comprising: a shaft drive gear that is rotated by the second motor; and a shaft screw portion that is provided on the shaft and engages with the shaft drive gear. A drive unit that moves linearly.   9. The drive unit according to claim 8, wherein the shaft drive gear includes an inner locking portion formed on a center opening side thereof, and the inner locking portion engages with the shaft screw portion. Drive unit.   10. The drive unit according to claim 7, wherein the first elastic member that holds the first end side of the shaft in the housing and the second end side of the shaft is held in the housing. 11. And a second elastic member.   The drive unit according to any one of claims 7 to 10, wherein the drive unit is fixed to a vehicle body of a model tank, the rotating body rotates the turret of the model tank, and the shaft is provided in the turret. A drive unit characterized by tilting the gun barrel.   12. The drive unit according to claim 11, wherein a projecting piece for engaging with the rotating body of the drive unit is formed on the turret, and the rotating body rotates the turret via the projecting piece. A drive unit characterized by In the model toy according to claim 3 ,
The drive unit includes a non-circular cross-section drive gear engagement portion formed on the shaft drive gear, and a non-circular cross-section shaft engagement portion formed on the shaft and engaged with the drive gear engagement portion. A housing screw portion formed in the housing, and a shaft screw portion formed on the shaft and screwed with the housing screw portion,
The shaft is rotated by the rotation of the shaft driving gear through the driving gear engaging portion and the shaft engaging portion, and the shaft is rotated by screwing between the housing screw portion and the shaft screw portion. A model toy that moves linearly while moving. The drive unit according to claim 8 ,
A non-circular cross-section drive gear engagement portion formed in the shaft drive gear, a non-circular cross-section shaft engagement portion formed in the shaft and engaged with the drive gear engagement portion, and formed in the housing A housing screw portion, and a shaft screw portion formed on the shaft and screwed with the housing screw portion,
The shaft is rotated by the rotation of the shaft driving gear through the driving gear engaging portion and the shaft engaging portion, and the shaft is rotated by screwing between the housing screw portion and the shaft screw portion. A drive unit that moves linearly while moving.

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