JP3670000B2 - Mounting structure for toy motor - Google Patents

Description

  The present invention relates to a motor mounting structure, for example, a mounting structure particularly effective when applied to a motor that is frequently attached and detached.

Conventionally, a motor is a power source in, for example, various toys, and the power of the motor is transmitted to an operation unit (wheels in a traveling toy and limbs in a robot toy or doll toy) via a gear mechanism. It has become.
By the way, when attaching a motor, it is indispensable to adopt a structure in which the motor does not move for the attachment. This is because if the motor moves, for example, the engagement between the motor gear and the gear meshed therewith will be incomplete, and power transmission to the operating part will not be successful.
Therefore, conventionally, when a motor is attached, the motor pressing plate is fixed by screwing the motor pressing plate with the motor pressed by the motor pressing plate. (For example, Patent Document 1)
Japanese Utility Model Publication No. 6-113494

However, in motors mounted on racing car toys, etc., there are cases where it is desired to replace the motor depending on the course conditions (for example, there are many curves, etc.). When replacing the motor, the screws had to be attached and removed, which was troublesome.
In addition, when the conductor is attached to the motor, it is necessary to attach and detach the conductor with solder, which is very troublesome.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a motor mounting structure and a racing car toy that can easily mount and remove a motor.

The toy motor mounting structure according to claim 1 is a motor mounting structure in which a motor is mounted on a motor storage portion provided on a base. When the motor is stored in the motor storage portion, the motor shaft is mounted on the motor shaft. The provided gear is configured to mesh with a gear provided on another shaft extending in parallel with the shaft of the motor, and can be rotated about the other shaft. An opening position for opening the motor housing portion and a closed position for closing the motor housing portion, and a motor pressing plate for pressing the body of the motor installed in the motor housing portion at the closed position, the motor pressing plate, In the closed position, the engaging portion provided on the base body has a locking portion that can be locked by itself or the elasticity of the engaging portion, and also serves as a heat sink, and the engaging portion Part Nde wherein the other shaft, characterized in that provided on the opposite position.

Here, the “base” refers to a portion that defines the motor housing portion and a portion in the vicinity thereof, regardless of whether it is configured by one member or a combination of two or more members. Further, the extending direction of the “rotating axis” does not matter whether it is a direction parallel to the axis of the motor installed in the motor storage section or an intersecting direction (for example, an orthogonal direction). Furthermore, the “engagement portion” may be a protrusion, a hole edge, or the like. In short, it is only necessary that the locking piece can be locked by its own or the elasticity of the engaging portion. The material of the “motor holding plate” may be metal or synthetic resin. In addition, the toy to which this “toy motor mounting structure” is applied may be any type of toy, such as a car toy, robot toy, doll toy, etc. It is particularly effective. Note that “opening the motor storage portion” does not mean complete opening of the motor storage portion, but includes opening to the extent that the motor can be attached and detached. Further, “closing the motor housing portion” does not need to cover the entire motor housing portion, and includes closing that prevents the motor from being attached or detached.
Also, in order to use the motor holding plate as a heat sink, the "motor holding plate" it is required to be thermally enhanced material. For that purpose, it is preferable that the “motor holding plate” is made of metal, for example, copper or aluminum, but if a shape having a high heat dissipation effect is selected, synthetic resin or the like (for example, ABS resin) may be used.

  According to the motor mounting structure of the first aspect, the motor can be installed in the motor housing portion by rotating the motor pressing plate to the open position, and then the motor pressing plate is rotated to the closed position and locked. The motor can be fixed by elastically locking the piece to the engaging portion of the base. On the other hand, the motor can be removed by applying a force to the locking piece elastically locked to the engaging portion of the base body to release the locking and rotating the motor pressing plate to the open position. .

According to the motor mounting structure of the first aspect, since the shaft of the motor pressing plate extends in parallel with the shaft of the motor, the entire body portion is pressed almost uniformly by the motor pressing plate. . Moreover, since the engaging part is provided in the position on the opposite side to the axis | shaft of a motor holding | suppressing board on both sides of a motor storage part, a motor can be reliably hold | suppressed by a motor pressing | pressing board.

According to the motor mounting structure of the first aspect , since the motor holding plate also serves as the heat radiating plate, it is not necessary to provide a special heat radiating plate or heat radiating structure.

  FIG. 1 is a perspective view of a racing car toy to which a motor mounting structure according to an embodiment is applied. The outer shell of the car toy 1 includes a chassis (base body) 2 and a body 3 shown in FIG. The chassis 2 and the body 3 are made of plastic, and the side portion of the body 3 has a certain degree of elasticity, and is not particularly limited, but a recess (engagement portion) is provided inside each side portion. The body 3 is attached to the chassis 2 by elastically engaging the protrusions 2a on both sides of the chassis 2 with each other. Note that an opening 3a is preferably provided in the rear part of the body 3 in order to improve the heat dissipation effect of the motor 11 described later.

  FIG. 2 shows a plan view of the chassis 2. Although not particularly limited, a rechargeable battery (nickel battery) 4 is installed in a vertically placed state at the center of the chassis 2. The battery 4 is attached to a battery housing portion (not indicated) by an attachment member 5. The mounting member 5 is made of plastic and is formed in an inverted U shape so that the body of the battery 4 can be pressed. The attachment member 5 has at least elastic properties at both free ends, and both free ends can be deformed in directions toward and away from each other. A locking claw (engagement portion) 5a is provided outside each free end, and the battery 4 is obtained by hooking the locking claw 5a on an edge (engagement portion) of a hole (not shown) of the chassis 2. Can be fixed. In addition, conductor pieces 6a and 6b that can be electrically connected to the negative electrode and the positive electrode of the battery 4 are provided before and after the battery housing portion. Although not shown, the conductor pieces 6a and 6b are partially exposed on the lower side of the chassis 2, and the battery 4 can be charged by using the exposed conductor pieces 6a and 6b.

Further, a motor housing portion 7 is provided at the rear portion of the chassis 2 as shown in FIG . As shown in FIG. 4, the motor 11 is installed in the motor storage portion 7 in a horizontally placed state.

  The motor 11 installed in the motor storage unit 7 is a DC motor, and includes a large assembly case 12, a completed rotor 13, and a small assembly case 14, as shown in FIG. Hereinafter, the large assembly case 12, the completed rotor 13, and the small assembly case 14 will be described in order.

As shown in FIG. 6, the assembled large case 12 includes a large case (body portion) 20 having an opening 20 a at the bottom. The large case 20 is made of a conductive material.
The large assembly case 12 has a structure in which a stator 21 is provided inside the large case 20. The stator 21 generates a constant magnetic field inside the motor 11, and a permanent magnet or an electromagnet is generally used. In this embodiment, a permanent magnet is used.

  As shown in FIG. 7, the completed rotor 13 has a drive winding 32 wound around a core 31 attached to the rotating shaft 30, and a sleeve 33 and a thrust ring 34 attached to one end of the rotating shaft 30 sandwiching the core 31. Thus, a commutator 35 and an oil cutter 36 are attached to the other end side. The commutator 35 has a structure in which a commutator piece 35b is attached to a core member 35a.

The small assembly case 14 is configured to include a small case 40 (FIG. 8) that fits into the large case 20 and closes the opening 20 a of the large case 20. The small case 40 is made of an insulator.
As shown in FIG. 8, the small assembly case 14 has a structure in which conductor pieces 41, 42, 43 and contact springs 44, 45 are attached to the small case 40. Of these, the conductor piece 41 constitutes a negative terminal, is electrically connected to the negative electrode side of the battery 4, and can be electrically connected to the commutator 35 via the contact spring 44. Note that the tip of the conductor piece 41 is curved when assembled to the small case 40 as shown in FIG. On the other hand, the conductor piece 42 is connected to the large case 20 via the conductor piece 43, and the large case 20 is configured to be electrically connected to the positive electrode side of the battery 4. The conductor piece 42 is configured to be electrically connectable to the commutator 35 via the contact spring 45.

  Next, the motor housing portion 7 will be described. Although not particularly limited, one end of a conductor piece 6a electrically connected to the negative electrode of the battery 4 extends on the right side wall of the motor housing portion 7 as shown in FIG. doing. On the other hand, one end of a conductor piece 6 b electrically connected to the positive electrode of the battery 4 extends on the floor of the motor housing portion 7. As shown in FIG. 4, when the motor 11 is installed in the motor housing 7, the negative terminal at the bottom of the motor 11 is automatically electrically connected to the conductor piece 6a, and the positive terminal of the trunk is automatically connected to the conductor piece 6b. It has come to be.

  Further, gears 50 and 51 are installed in the vicinity of the left side wall of the motor housing portion 7. The gears 50 and 51 are integrally formed of plastic, and are configured to idle around a horizontal axis (rotating axis) 52. Here, the gear 51 meshes with a gear 53 fixedly provided on the axle 2b of the rear wheels 2a, 2a. The rear wheels 2a and 2a are driven by the rotation of the gear 53 by the motor power. On the other hand, the gear 50 meshes with a gear 54 attached to the shaft of the motor 11 when the motor 11 is installed in the motor housing 7.

  Further, a motor pressing plate 8 is provided at the rear portion of the chassis 2. The motor pressing plate 8 is made of copper, although not particularly limited. The motor pressing plate 8 is appropriately provided with slits and holes so as to satisfy both the heat radiation improvement of the motor 11 and the pressing effect. The motor pressing plate 8 is configured to be rotatable around a horizontal shaft 52 extending in the horizontal direction on the front side of the motor storage portion 7. The motor holding plate 8 is rotated around the horizontal axis 52 to open the motor housing 7 (A in FIG. 9) and to close the motor housing 7 (B in FIG. 9). It is configured to be able to take. The motor pressing plate 8 is configured to be able to press the body portion of the motor 11 installed in the motor storage portion 7 when in the closed position.

  The motor pressing plate 8 has a curved central portion on the free end side, and this curved portion constitutes a locking portion 8a. The locking portion 8a has elasticity, and when the motor pressing plate 8 is rotated about the horizontal shaft 52, the locking portion 8a is moved from the open position (A in FIG. 9) to the closed position (B in FIG. 9). Further, it is inserted into a hole 62 provided on the rear side of the motor housing part 7 of the chassis 2 and is locked to the edge (engagement part) of the hole 62 by its own elasticity.

  A method of replacing the motor 11 with the motor mounting structure configured as described above will be described.

  First, the body 3 is removed from the chassis 2, and the motor pressing plate 8 is moved to the open position (A in FIG. 9) by rotating about the horizontal axis 52. In this state, the motor 11 is taken out from the motor storage unit 7. By this removal, the electrical connection between the motor 11 and the conductor pieces 6a and 6b is released. Further, the meshing of the gear 54 and the gear 50 attached to the shaft of the motor 11 is released.

  Next, the other motor 11 is fitted into the motor housing 7. By this fitting, the negative terminal at the bottom of the motor 11 is electrically connected to the conductor piece 6a, and the positive terminal at the trunk of the motor 11 is electrically connected to the conductor piece 6b. A gear 54 attached to the shaft of the motor 11 meshes with the gear 50. Next, the motor pressing plate 8 is moved to the closed position (B in FIG. 9) by rotating about the horizontal axis 52. Then, the locking piece 8 a is locked to the edge (engagement portion) of the hole 62. As a result, the motor 11 is fixed to the chassis 2. Thereafter, the body 3 is attached to the chassis 2.

  As mentioned above, although embodiment of this invention was described, it cannot be overemphasized that this invention is not limited to this embodiment, A various deformation | transformation is possible in the range which does not deviate from the summary.

  For example, in the embodiment, the large case 20 is a positive terminal, but the large case 20 may be a negative terminal. Alternatively, a region isolated from each other may be formed in the large case 20, and the regions isolated from each other may be used as a positive terminal and a negative terminal. Furthermore, an inner case may be provided in the large case 20, a part of the inner case may be exposed to the outside, and the exposed part may be used as a terminal. Moreover, it is good also considering the outer periphery of the small case 40 side as a terminal not the large case 20 side.

It is a perspective view of the car toy for racing concerning an embodiment. It is a top view of the chassis of the automobile toy for racing of FIG. It is a perspective view of the motor storage part of the motor vehicle for racing of FIG. It is a perspective view of the motor storage part of the motor vehicle toy of FIG. It is sectional drawing of the motor currently used for the motor vehicle toy of FIG. It is a disassembled perspective view of the assembly large case of the motor of FIG. It is a disassembled perspective view of the completion rotor of the motor of FIG. It is a disassembled perspective view of the assembly small case of the motor of FIG. It is a side view which shows the opening-and-closing state of the motor holding plate of the motor vehicle toy of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car toy for race 2 Chassis 3 Body 4 Battery 7 Motor storage part 8 Motor holding plate 9 Locking piece (locking part)
11 Motor

Claims (1)

In a motor mounting structure in which a motor is attached to a motor storage portion provided on a base, when the motor is stored in the motor storage portion, a gear provided on the motor shaft extends in parallel with the motor shaft. It is configured to mesh with a gear provided on another existing shaft , and can be rotated around the other shaft, and the motor housing portion is opened by the rotation and the motor housing portion is closed. A motor holding plate that holds the body of the motor installed in the motor housing portion at the closed position, and the motor pressing plate is provided on the base when in the closed position. The engaging portion has a locking portion that can be locked by its own or the elasticity of the engaging portion, and also serves as a heat sink, and the engaging portion is opposite to the other shaft across the motor storage portion. Provided in position Mounting structure for toy motors, characterized by that.

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