JP2006314440A - Electric model automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric model automobile which can simply be set to be a four-wheel drive car of a rear driving type, that of a front driving type, and that of a front/rear wheel simultaneously driving type. <P>SOLUTION: The electric model automobile is provided with: a first assembly 6 which pivots a pair of motor-driven wheels 13; a second assembly 7 which pivots a pair of wheels 14; and a body 1 which makes the first assembly or the second assembly attachable and detachable optionally to/from a first fitting position 2 on its rear side or a second fitting position 3 on its front side. After fitting the first assembly and the second assembly to the first fitting position or the second fitting position or after fitting two mentioned first assemblies to the first fitting position and the second fitting position, the assemblies can be held between the body and a cover 60. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an electric model vehicle, and in particular, a first assembly that pivotally supports a pair of motor-driven wheels and a second assembly that pivotally supports a pair of wheels are arbitrarily attached to the front and rear mounting positions of the vehicle body. The present invention relates to the technology of an electric model car configured to be replaceable.

  There is known a four-wheel drive type electric model vehicle in which steering is performed by guide rollers provided at the four corners of the cover of the vehicle being guided along the left and right wall surfaces of the endless track. According to this electric model car, after children and the like are completed by assembling an assembly kit, they can enjoy by starting two at the same time on a circuit having a dedicated runway of at least two lanes and competing for the arrival order.

  This electric model car has a “dedicated tune-up kit” such as a direct current motor that generates stronger torque in place of the direct current motor enclosed in the assembly kit, and a gold-plated motor contact with a lower electrical resistance. They are being sold, and by purchasing them and installing them as appropriate, the company's competitiveness is enhanced to make it more interesting. For this reason, care is taken so that even a child can perform disassembly and assembly work with or without a simple tool.

On the other hand, in a radio controlled vehicle, sockets (connectors) are provided in each of a front wheel unit having a steering function, a rear wheel unit that drives a rear wheel by being driven by a motor, and a control unit that controls traveling by radio control. It has been proposed to be configured to be detachable by a plug-in method (Patent Document 1).
Japanese Utility Model Publication No. 62-128596.

  However, according to the proposal of the above-mentioned Patent Document 1, since it is an object to simplify the product assembly work, it is difficult to exchange the dedicated tune-up kit as described above. For this reason, it may be practically impossible for a child or the like to perform the operation of exchanging the motor contact for electrically connecting the electrode of the DC motor and the electrode of the battery.

  Further, the above-described four-wheel drive type electric model automobile is provided with an assembly that pivotally supports a pair of rear wheels driven by a motor at a mounting position at the rear of the vehicle body, while an assembly that pivotally supports the front wheels. In addition to being detachably provided at the mounting position in front of the vehicle body, the driving force of the rear wheels is transmitted to the front wheels via a transmission mechanism. As a result, it was a so-called rear drive type four-wheel drive vehicle.

  By the way, a track dedicated for a four-wheel drive electric model car has first to fourth corners that are continuous from parallel straight portions like a track of a stadium. Therefore, in order to shorten the time during the competition, it is important how quickly each corner can be passed.

  In order to pass through the corner in such a short time, a so-called front drive type four-wheel drive vehicle may be advantageous in terms of weight distribution. For this reason, there is a case where the battery polarity of the rear drive type four-wheel drive vehicle is reversed to run backwards, but this is not interesting because the rear wing at the corner is positioned forward and lacks realism.

  Therefore, the present invention has been made in view of the above problems, and is easily applied to a rear drive type four-wheel drive vehicle, a front drive type four-wheel drive vehicle, or a front-rear wheel simultaneous drive type four-wheel drive vehicle. The purpose is to provide an electric model car that can be set as follows.

  In order to solve the above-described problems and achieve the object, the present invention provides a first assembly 6 that pivotally supports a pair of motor-driven wheels and a second assembly 7 that pivotally supports a pair of wheels. A vehicle body 1 that arbitrarily attaches / detaches the first assembly or the second assembly to the rear first mounting position 3 or the front second mounting position 3; and the vehicle body is covered. A cover 60, after the first assembly and the second assembly are attached to either the first attachment position or the second attachment position, or two of the first assemblies. The assembly can be held between the vehicle body and the cover after being attached at the first attachment position and the second attachment position.

  The first assembly and the second assembly have contact portions 6a and 7a that are in contact with the cover in the same shape, and the vehicle and the cover are brought into contact with each other by the contact of the cover. It is characterized by being able to hold between.

  And a transmission mechanism 32, 32, 40, 41, 41 for transmitting the driving force of the wheel of the first assembly to the wheel of the second assembly. The second assembly is characterized by forming notches 11x, 11y, 15x, and 15y extending across the transmission mechanism and extending in the front-rear direction.

  The transmission mechanism includes a first crown gear 32 fixed to the wheel axle of the first assembly, and a second crown gear 32 fixed to the wheel axle of the second assembly. A shaft body 40 whose longitudinal direction coincides with the longitudinal direction of the vehicle body and is rotatably supported, and a pair of flat gears fixed to both ends of the shaft body and meshing with the first and second crown gears. It is characterized by comprising gears 41, 41.

  The motor is driven by a DC motor 8 driven by two batteries, and the vehicle body is positive or negative of the two batteries 5 between the first mounting position and the second mounting position. A battery housing part 4 is formed in which the electrodes are alternately housed in the front-rear direction, and the first assembly is configured to connect the two batteries and the electrodes of the DC motor in order to connect the first set. A switch component that is provided with a pair of motor contacts 9, 10 having contact points 9a, 9a, 10a, 10a formed on each side in the front-rear direction of the solid body, and the second assembly is movably disposed on the bottom surface 51 and a pair of switch contacts 50, 50 that are elastically deformed between a state where they are in contact with and away from the positive and negative electrodes of the two batteries by the movement operation of the switch parts, Place on each side in the front-rear direction Both are characterized by two openings 1k bored in the front and rear of the bottom surface of the vehicle body, via one of 1k to allow operating the switch parts.

  Further, fixing holes 9c and 10c are formed in the motor contact, and the holes are fitted and fixed to the convex portions 23 and 24 formed on the side surfaces, and the electrodes are connected to the motor. The DC motor and the motor contact can be exchanged by disposing the DC motor inside the first assembly so as to face the contact.

  The first assembly includes a base portion 11 and a lid body 12 that is pivotally supported with respect to the base portion and is fitted to the base portion. The lid body causes the DC motor to remain stationary. It is characterized by doing.

  And a guide roller 61 that is rotatably provided along the traveling direction at the four corners of the cover, and that the guide roller is guided along the left and right wall surfaces of the endless running path to perform steering. It is a feature.

  According to the present invention, it is possible to provide an electric model car that can be enjoyed more easily by simply setting the electric model car to various driving states.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Here, various modifications and changes can be made to the present invention, specific examples of which are illustrated in the drawings and described in detail below. However, the present invention is not limited to these contents, and it is needless to say that various configurations are possible within the scope defined in the claims, and the present invention can be applied to all electric model vehicles.

  First, Fig.1 (a)-(c) is the front view which showed typically the mode before attaching a cover to the electric model vehicle which is one Embodiment of this invention.

  FIG. 1A shows a first assembly 6 that pivotally supports a pair of wheels 13 driven by a motor at a first mounting position behind the vehicle body 1 and a second assembly that pivotally supports a pair of wheels 14. 2 shows a state before the assembly 7 is mounted at the second mounting position in front of the vehicle body 1. In FIG. 1B, the first assembly 6 that pivotally supports a pair of motor-driven wheels 13 is pivotally supported at the second mounting position in front of the vehicle body 1 and the pair of wheels 14 is pivotally supported. The state before attaching the 2nd assembly 7 to the 2nd attachment position of the back of the vehicle body 1 is shown. FIG. 1 (c) shows a state before the two second assemblies 6, 6 are attached to the first and second attachment positions of the vehicle body 1.

  In FIG. 1A, the vehicle body 1 travels with the arrow F direction in the front. In the first mounting position 2 at the rear of the vehicle body 1 and the second mounting position 3 at the front of the vehicle body 1, four slots 3a, 2a indicated by broken lines in the drawing are formed. Moreover, the opening part 1k shown with the broken line in the figure is formed in the front and back of the bottom face of the vehicle body 1, respectively.

  Further, between the first mounting position 2 and the second mounting position 3, a shaft body 40 (shown by broken lines) having flat gears 41 and 41 fixed at both ends is rotatably provided to constitute a transmission mechanism. ing.

  The first assembly 6 incorporates a DC motor 8 shown by a broken line, and a rear wheel shown by an alternate long and short dash line through a gear train (not shown) that meshes with a gear fixed to the rotating shaft of the DC motor. 13 is driven. A first crown gear 32 (shown by a broken line) is fixed to the axle of the rear wheel 13.

  Further, this first assembly 6 has a base 11 as an attachment base for each component, and studs 11a and 11a (only two places in the drawing) extending downward as shown in the four corners of this base 11. (Shown) is further formed. These studs 11a are positioned in the direction of the arrow after positioning with respect to the four mounting slots 2a formed in the four corners of the second mounting position 2 of the vehicle body 1 (only two points are indicated by broken lines in the drawing). The first assembly 6 is integrated with the vehicle body 1 by press-fitting. The operation part 51k of the switch component 51 can be operated from the bottom surface of the vehicle body 1 through the opening 1k in front of the vehicle body. Here, the stud portion 11a and the groove portion 2a are formed so as to have a fitting dimension relationship or a mutual positional relationship that can be easily removed by pulling the first assembly 6 upward from the vehicle body 1. Has been. Alternatively, it may be fixed by a lock mechanism (not shown).

  The base 11 of the first assembly 6 is further formed with cuts 11x and 11y (shown by broken lines) extending in the front-rear direction, and any of the cuts 11x and 11y is the above-described spur gear 41. Is mounted without mechanical interference so that the crown gear 32 and the spur gear 41 can mesh with each other.

  On the other hand, the second assembly 7 is configured to pivotally support a front wheel 14 shown by a one-dot chain line at a base portion 15 serving as a mounting portion for each component. A second crown gear 32 (shown by a broken line) is fixed to the axle of the front wheel 14. Furthermore, studs 15a and 15a (only two places are shown in the drawing) extending downward as shown in the figure are formed at the four corners of the base 15, and the four corners of the second mounting position 3 of the vehicle body 1 are formed. The first assembly 6 is integrated with the vehicle body 1 by pressing in the direction of the arrow after positioning with respect to the four mounting groove holes 3a, 3a (only two places are shown by broken lines in the drawing) formed in It is configured. Further, the base portion 15 of the second assembly 7 is also formed with cut portions 15x and 15y (shown by broken lines) extending in the front-rear direction, and any of the cut portions 15x and 15y is the above-described flat gear. It is attached without interfering mechanically by straddling 41, and the crown gear 32 and the spur gear 41 can mesh.

  Thus, it can be easily set to be a rear drive type four-wheel drive vehicle.

  Next, in FIG. 1B, the same reference numerals are given to the components or parts that have already been described, and the description thereof will be omitted. The first and second assemblies 6 and 7 have their respective stud portions 11a and 15a. The shape and arrangement position of the groove portions 2a and 3a in the vehicle body 1 are completely interchangeable. For this reason, the first assembly 6 that pivotally supports the pair of rear wheels 13 driven by the motor can be mounted in the second mounting position 3 in front of the vehicle body 1 in the direction of the arrow. Further, the second assembly 7 that pivotally supports the pair of front wheels 14 can be mounted at the first mounting position 2 at the rear of the vehicle body 1. At this time, the operation portion 51k of the switch component 51 can be operated from the bottom surface of the vehicle body 1 through the opening 1k at the rear of the vehicle body.

  As described above, since it is possible to easily change from a rear drive type to a front drive type four-wheel drive vehicle, for example, when a good time could not be recorded in the state of FIG. 1A, it is shown in FIG. It becomes possible to change to the state immediately and continue the competition.

  In FIG. 1C, the same reference numerals are given to the components or parts that have already been described, and the description thereof is omitted. The stud portions 11a of the two first assemblies 6 have the slot holes in the vehicle body 1. It can be mounted in the direction of the arrow with respect to 2a and 3a. According to this, it can be easily changed to a two-motor type four-wheel drive vehicle.

  FIG. 2A is a front view showing the main part in a cutaway state in order to show a state immediately before the cover 60 is set after the mounted state shown in FIG. 1A, and FIG. It is the front view which fractured | ruptured and showed the principal part, in order to show the mode after setting.

  In this figure, components or components that have already been described are denoted by the same reference numerals and description thereof is omitted. When the first and second assemblies 6 and 7 are individually mounted on the vehicle body 1 as described above, they are not shown. It may be fixed with a screw or the like, but if this is done in the middle of the race, time-consuming time is lost. Therefore, if it can be fixed by covering the cover 60, the time can be shortened.

  For this purpose, the reinforcing ribs 60f (only the front side is shown in the drawing) integrally formed in the front-rear direction inside the cover 60 are formed with the same shape portions 60a and 60b. Each assembly can be fixed to the vehicle body 1 in an immobile state by allowing the shape portion to abut against the abutting portions 6a and 7a of the same shape of the first assembly 6 and the second assembly 7. It is configured.

  In the illustrated example, members 64 and 71 to be screwed are fixed to the cover 60, and after the member 64 is inserted below the bar member 1c of the vehicle body 1, the cover 60 is rotated in the direction of the arrow D1. As shown in FIG. 2B, the latch component 70 can be set and fixed between the locking portion 1 x and the member 71.

  Next, FIG. 3 is a three-dimensional exploded view of the electric model car of FIGS. 1 and 2 and shows a state before the cover is attached. In this figure, if components and parts that have already been described are given the same reference numerals and description thereof is omitted, the illustrated parts are injection molded using, for example, an ABS resin material.

  Specifically, the gear for transmitting the driving force is injection-molded from a nylon resin material, and the rubber tire is molded from a natural rubber or a synthetic rubber material. Further, the axle and the shaft body are made of metal, and the contact parts are made of phosphor bronze, and the material most suitable for the purpose of use is used.

  The vehicle body 1 is integrally formed so as to have sufficient strength to withstand the load applied during traveling, and the direction of the arrow F is forward. As described with reference to FIG. 2, a rod member 1 c serving as a locking portion when the cover is attached is integrally formed between the left and right shape portions in front of the vehicle body 1. An opening 1k is provided behind the bar member 1c so that an operation portion of a power switch, which will be described later, can be operated from the bottom surface side of the vehicle body 1. Similarly, an opening 1k is formed in the rear of the vehicle body 1.

  Four mounting groove portions 2a are integrally formed at the first mounting position 2 on the rear side of the vehicle body 1, and a rear wheel 13 driven by the DC motor 8 with respect to the first mounting position 2; The four first studs 11a extending downward from the base 11 constituting the first assembly 6 are moved as shown by the alternate long and short dash line in the figure. To be fitted.

  On the left side of the first mounting position 2, a battery housing portion 4 for housing the positive and negative electrodes of two AA batteries 5 and 5 serving as batteries in the front-rear direction is integrally formed with a positive / negative display portion. In addition, a groove portion 1f that is parallel to the longitudinal direction is integrally formed in the battery housing portion 4, and the metal shaft body 40 with the flat gear 41 fixed as described above is set in the groove portion 1f. Thus, the shaft body 40 can be rotated in the groove 1 f so that the driving force of the rear wheel 13 can be transmitted to the front wheel 14. A pair of ring parts 42 serving as bearings are inserted into the shaft body 40 to further reduce friction.

  Further, on the left side of the battery accommodating portion 4, a second attachment position 3 provided with four attachment groove portions 3a so as to surround the opening 1k is integrally formed. The second assembly 7 provided with the front wheels 14 and 14 with respect to the position 3 is set as indicated by a one-dot chain line in the drawing. That is, the four studs 15a extending downward from the base portion 15 constituting the second assembly 7 are integrated with the vehicle body 1 by being press-fitted or positioned in the four mounting holes 3a.

  In addition, the notches 11y and 15y are formed as shown in the figure to prevent mechanical interference with the transmission mechanism when the assemblies 6 and 7 are set at arbitrary mounting positions 2 and 3 in the front-rear direction. .

  As described above, the first assembly 6, the second assembly 7, and the dry battery 5 are configured to be easily detachable from the vehicle body 1 without using a tool. Moreover, the upward lifting is completely prevented by fixing a cover described later.

  Further, contact parts having contacts 9a, 10a, 50a, 50b on the front and rear wall surfaces are fixed to the first assembly 6 and the second assembly 7, and the first assembly 6 and the second assembly 7 are fixed. Even when the three-dimensional body 7 is set at any one of the front and rear mounting positions, the power can be supplied from the battery. This configuration will be described in detail.

  FIG. 4 is an exploded view of the first assembly 6 of FIG. In the figure, components that have already been described are denoted by the same reference numerals and description thereof is omitted. The rear wheels 13 and 13 are completed by press-fitting the rubber tire 17 into a resin wheel 46. Thereafter, a metal hexagonal column-shaped axle 18 is press-fitted and fixed to one of the rear wheels 13, and a nylon bush 27 having a flange portion directed toward the wheel 46 is inserted, so that a shaft support hole 21 a of the axle of the base 11 is inserted. The flat gear 31 and the crown gear 32 are inserted, the shaft support hole 21b of the other axle is inserted, the nylon bush 27 is inserted, and the other of the rear wheels 13 is press-fitted and fixed. Since the spur gear 31 and the crown gear 32 are formed with hexagonal holes that match the hexagonal columnar axle 18, power can be transmitted to the rear wheel 13 via the spur gear 31. When the first assembly 6 is set on the vehicle body 1, the crown gear 32 meshes with the flat gear 41, so that power can be transmitted to the front wheels 14,14.

  A shaft support hole is formed on the side surface of the base 11 and a gear case 22 for supporting the intermediate gear 30 as shown in the figure is integrally formed. The intermediate gear 30 is integrally formed with a gear portion that meshes with the flat gear 31 and a gear portion that meshes with a gear 29 fixed to the output shaft of the DC motor 8, and a metal shaft 33 is a gear case portion 22. By being detachably held with respect to the inner hole portion 22a and the U groove portion 22b, it can be easily replaced and taken out.

  The direct current motor 8 is provided with electrodes 8a and 8b located on the bottom surface of the direct current motor 8, and each electrode is set in a non-moving state in the motor housing 20 after bending the electrodes downward. Since this DC motor 8 is an object of the “dedicated tune-up kit” and is frequently replaced, a lid 12 that is opened and closed in the direction of the arrow is provided above the base 11.

  The lid body 12 is elastically deformed with respect to the shaft support portions 12 a and 12 a that are pivotally supported by the left and right hole portions 25 and 25 of the base portion 11 and the locking portion 26 that is formed on a part of the inner wall of the motor housing portion 20. The locking claw 12b to be locked is integrally formed. Therefore, as shown in FIG. 1, while the lid 12 is closed, the direct current motor 8 is pressed to prevent the lift, while the replacement of the motor releases the locking claw 12b. The lid body 12 is configured to be able to easily take out the DC motor 8 and the intermediate gear 30 by rotating upward about the shaft support portions 12a and 12a.

  A positive motor contact 9 and a negative motor contact 10 facing the first and second mounting positions 2 and 3 of the vehicle body 1 are replaceably provided on the base 11 of the first assembly 6 configured as described above. It has been.

  FIG. 5 is a bottom view in which the positive motor contact 9 and the negative motor contact 10 are fixed to the base 11 of the first assembly 6.

  Further referring to FIG. 5 in FIG. 4, the positive motor contact 9 has a base portion formed in a substantially T shape as shown in the figure, and is erected substantially vertically upward from both ends of the base portion. Positive contact portions 9a, 9a that are elastically deformed by abutting on the contacts, and contacts that extend from substantially the center of the base and contact the electrodes 8b of the DC motor 8 to supply power by being elastically deformed appropriately. The part 9b is integrally pressed.

  On the other hand, the negative electrode motor contact 10 is provided with a substantially “concave” shaped base portion, and a negative contact portion 10a, 10a that is erected substantially vertically upward from both ends of the base portion and elastically deforms by contacting the negative electrode of the dry battery. And a contact portion 10b for supplying power by appropriately elastically deforming by contact with the electrode 8b of the DC motor 8 by being formed so as to protrude from the middle of the base portion. Press working.

  Further, a total of three holes 9c are formed in the middle of the base of the positive motor contact 9 as shown in the figure. The positive motor contact 9 is inserted into the opening 11d (see FIG. 5) provided on the bottom surface of the base 11 of the first assembly 6 and then the hole 9c at the center of the base is inserted into the base 11. By fitting the front and rear holes 9c into the convex portions 23 formed on the vertical outer wall surface of the base 11, the base 11 can be easily fitted. It is attached to be exchangeable.

  On the other hand, a total of four holes 10c are formed in the base of the negative motor contact 10 as shown in the figure. The negative motor contact 10 is formed by inserting the contact portion 10b through an opening 11d (see FIG. 5) provided on the bottom surface of the base portion 11 of the first assembly 6 and then inserting the hole portion 10c into the bottom wall surface of the base portion 11. The base portion 11 can be exchanged by fitting the remaining holes 10c to the convex portions 24 formed on the vertical outer wall surface of the base portion 11, respectively. It is attached.

  As described above, the motor contacts 9 and 10 are replaceably disposed on the outer wall surfaces of the vertical surface and the bottom surface of the base 11 of the first assembly 6 so that the DC motor 8 can be quickly replaced without being taken out. . Moreover, the positive electrode contact portions 9a and 9a and the negative electrode contact portions 10a and 10a are arranged along the front and rear wall surfaces.

  Next, FIG. 6 is a three-dimensional exploded view of the second assembly 7 of FIG. In this figure, components that have already been described are denoted by the same reference numerals and description thereof is omitted, and the front wheels 14 and 14 respectively press-fit the rubber tires 17 into the resin wheels 46 in the same manner as the rear wheels. Completed. Thereafter, a metal hexagonal column-shaped axle 18 is press-fitted and fixed to one of the front wheels 14, and a nylon bush 27 having a flange portion directed toward the wheel 46 is inserted, and a shaft support hole portion of a pair of axles of the base portion 15 is inserted. 15 f is inserted, then the crown gear 32 is inserted, the shaft support hole 15 g of the front axle is inserted, the nylon bush 27 is inserted, and the other of the front wheels 14 is press-fitted and fixed. The crown gear 32 is formed with a hexagonal hole that matches the hexagonal columnar axle 18, so that power can be transmitted to the front wheel 14 via the gear 41. That is, when the second assembly 7 is set with respect to the vehicle body 1 as described with reference to FIG. 1, the second crown gear 32 is brought into mesh with the flat gear 41. Power transmission to is possible.

A switch component 51 constituting a power switch and a pair of switch contacts 50 and 50 are set on the base portion 15. These are provided so as to be easily replaceable as will be described later.
That is, the switch component 51 and the pair of switch contacts 50 and 50 are completed in a state where they are supported between the base 15 and the lid body 16 after being set at predetermined positions of the base 15. The lid body 16 has holes 16a, 16b, and 16b fitted into the claw portions 15w, 15s, and 15s erected from the base portion 15, and is configured to be easily assembled. The lid 16 is further provided with a pair of holes 16c and 16c for inserting the protrusions 30a and 30a of the shaped part 30. The role of the shape component 30 is to ensure the compatibility as described above by providing the second assembly 7 with an abutting portion having the same shape as the first assembly 6.

  FIG. 7A is a plan view showing a state in which the switch of the second assembly 7 is turned off, and FIG. 7B is a view in which the switch of the second assembly 7 is turned on. It is the top view which showed a mode that it is. Referring to FIG. 6 with further reference to FIG. 7, the switch component 51 is formed with arm portions 51b and 51b so as to be symmetrical from the left and right side surfaces 51f as shown. Further, the operation portion 51k is formed on the bottom surface and the projection portion 51a is integrally formed on the top surface using a predetermined resin material. The switch component 51 is set in the guide portion 15h of the base portion 15 and is provided so as to be movable in the left-right direction in FIG. At this time, the operation portion 51k is projected from below through the hole 15z of the base portion 15. Further, the protrusion 51 a is guided by the long hole portion of the lid body 16, thereby preventing rattling when the switch component 51 is moved.

  Protrusions 15m and 15k for fixing the switch contacts 50 and 50 are integrally formed on the base portion 15. After the switch contacts are press-fitted, they are brought into contact with the arm portions 51b and 51b to be elastically deformed. Thus, it is integrated with the base 15 while maintaining the locked state.

  In the above configuration, when the operation part 51k of the switch component 51 is moved with a fingertip, the negative contact part 50a that always contacts the negative electrode of the battery 5 of the switch contact 50 and the positive contact part 50b that contacts the positive electrode have the shape shown in the figure. Moved to a position.

  That is, as shown in FIG. 7A, when the switch component 51 is in the OFF state, the positive contact portion 50b is in a position retracted from the battery. Further, as shown in FIG. 7B, when the switch part 51 is moved with the fingertip of the operation part 51k, the arm part 15b of the switch part 51 located on the back side of the plus contact part 50b moves in the direction of the arrow. By doing so, the positive contact portions 50b and 50b are simultaneously pushed out in the same direction to be connected to the battery.

  As a result, the switch is turned on. To turn it off, it moves in the opposite direction. When the second assembly 7 configured as described above is set as shown in FIG. 1, as described above, the switch part operating portion 51 k of the second assembly 7 and the opening of the vehicle body 1. Since 1k matches, the switch component 51 can be operated through the opening 1k of the vehicle body 1.

  Next, FIG. 8 is a three-dimensional exploded view of the cover 60. The cover 60 is a streamline type as shown, and is integrally formed from ABS resin. This cover 60 produces a function for maintaining the first assembly 6, the second assembly 7 and the dry battery 5 on the vehicle body 1 in a stationary state after the first assembly 6, the second assembly 7 and the dry battery 5 are set, and a feeling of scale close to that of a real vehicle. And a function of providing guide rollers 61 that are rotatably provided along the traveling direction at the four corners of the cover 60.

  For this reason, each guide roller 61 is rotatably fixed via a stepped screw 65 and a metal washer 66 which are screwed to the shaft portions of the shaft supporting members 62 and 63, and each shaft supporting member 62 and 63 is fixed. Is fixed to the cover 60 and is guided at four corners. The shaft support member 63 is further fastened together with a member 64 to be screwed.

  On the other hand, the cover 60 is a locking member snap part 70 formed on a locking part formed on the left and right side surfaces of the vehicle body 1 and a locking that is locked to a locking part formed on the rear side of the vehicle body 1. The member 70 is further provided via a member 71 to be screwed, and the locking member 70 can be fixed to the vehicle body 1 without using a tool by operating with one touch.

  Finally, FIG. 9 is an external perspective view of the electric model automobile 100 after completion. When the electric model automobile 100 is dropped on the lane of the endless runway 200 in a switched-on state after completion, traveling starts in the direction of arrow F in the four-wheel drive state of the rear wheel 13 and the front wheel 14. At this time, the guide rollers 61 at the four corners of the cover 60 are guided along the left and right wall surfaces 201 of the endless runway, and the competition is performed at a high speed while being steered.

  For example, when it is desired to replace the motor contacts 9 and 10 from the result of the competition, it is possible to quickly replace the DC motor 8 without taking out the DC motor 8 by exchanging from the respective outer wall surfaces of the base 11 and the bottom surface of the first assembly 6. It can be exchanged. Similarly, the switch contacts 50 and 50 can be easily replaced.

  Further, by setting the rear drive type four-wheel drive vehicle, the weight distribution W2 of the rear wheel 13 is set to be larger than the weight distribution W1 of the front wheel, or vice versa, thereby setting the front drive type four-wheel drive vehicle. Or you can easily set it as a four-wheel drive vehicle with front and rear wheel simultaneous drive type and enjoy playing with one electric model car.

(A)-(c) is the front view which showed typically the mode before attaching a cover to the electric model vehicle which is one Embodiment of this invention. FIG. 2A is a front view showing a cutaway main portion in order to show a state immediately before the cover 60 is set after the loading state shown in FIG. 1A, and FIG. It is the front view which fractured | ruptured and showed the principal part, in order to show the mode after having performed. It is a three-dimensional exploded view of the electric model car of FIG. FIG. 2 is an exploded view of the first assembly 6 in FIG. 1. It is a bottom view of the base 11 of the 1st assembly 6 of FIG. FIG. 4 is an exploded view of the second assembly 7 in FIG. 3. (A) is a top view of operation | movement description with a power switch OFF state, (b) is a top view of operation | movement description with a power switch ON state. 3 is a three-dimensional exploded view of a cover 60. FIG. It is an external perspective view of the electric model automobile 100 after completion.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car body 2 1st attachment position 3 2nd attachment position 4 Battery accommodating part 5 Battery 6 1st assembly 7 2nd assembly 8 DC motor 9 Positive motor contact 10 Negative motor contact 11 Base 13 Wheel (rear wheel) )
14 wheels (front wheels)
15 Base 16 Lid 17 Rubber Tire 30 Shape Part 50 Switch Contact 51 Switch Part 60 Cover 61 Guide Roller 100 Electric Model Car

Claims (8)

A first assembly that pivotally supports a pair of motor driven wheels;
A second assembly pivotally supporting a pair of wheels;
A vehicle body that allows the first assembly or the second assembly to be arbitrarily attached to and detached from a first rear mounting position or a second front mounting position;
A cover for covering the vehicle body,
After attaching the first assembly and the second assembly to either the first attachment position or the second attachment position, or two of the first assemblies to the first attachment position. An electric model vehicle characterized in that it can be held between the vehicle body and the cover after being attached to the first attachment position and the second attachment position.   The first assembly and the second assembly have contact portions that contact the cover in the same shape, and can be held between the vehicle body and the cover by the contact of the cover. The electric model automobile according to claim 1, wherein A transmission mechanism for transmitting the driving force of the wheel of the first assembly to the wheel of the second assembly;
3. The electric model automobile according to claim 1, wherein the first assembly or the second assembly is formed with notches extending over the transmission mechanism and extending in the front-rear direction. 4. . The transmission mechanism is
A first crown gear fixed to an axle of the wheel of the first assembly;
A second crown gear fixed to an axle of the wheel of the second assembly;
A shaft body that is rotatably supported with its longitudinal direction aligned with the longitudinal direction of the vehicle body;
The electric model automobile according to claim 3, comprising a pair of flat gears fixed to both ends of the shaft body and meshing with the first and second crown gears. The motor driving is performed by a DC motor driven by two batteries,
The vehicle body forms a battery housing portion that houses the positive and negative electrodes of the two batteries alternately in the front-rear direction between the first mounting position and the second mounting position,
The first assembly includes a pair of motor contacts in which contacts are formed on each side surface in the front-rear direction of the first assembly to connect the two batteries and the electrodes of the DC motor. ,
The second assembly has a switch part that is movably disposed on the bottom surface thereof, and a state in which the second assembly is in contact with and away from the positive and negative electrodes of the two batteries by a movement operation of the switch part. A pair of switch contacts that are elastically deformed at the front and rear sides of the second assembly, and through one of the two openings formed at the front and rear of the bottom surface of the vehicle body. The electric model automobile according to any one of claims 1 to 4, wherein the switch part is operable.   A fixing hole is formed in the motor contact, the hole is fitted and fixed to a convex portion formed on the side surface, and the electrode is opposed to the motor contact. 6. The electric model automobile according to claim 5, wherein the DC motor and the motor contact are exchangeable by disposing the DC motor in one assembly.   The first assembly includes a base and a lid that is pivotally supported with respect to the base and is fitted to the base, and the DC motor is made stationary by the lid. The electric model automobile according to any one of claims 1 to 6.   And a guide roller rotatably provided along the traveling direction at the four corners of the cover, and the guide roller is guided along the left and right wall surfaces of the endless running path, and steering is performed. The electric model automobile according to any one of claims 1 to 7.

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