JP2004258135A - Gearbox kit for teaching material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gearbox kit for a teaching material in which a plurality of gearboxes are arbitrarily and easily connected lengthwise and crosswise, in orthogonal direction or the like, and a power is mutually transmitted between the gearboxes. <P>SOLUTION: The gearbox kit is provided with a main body 1 of gearbox which includes a compact motor 38 and a gear, a joint 11 which has a plurality of fitting holes 9 having a same inner diameter and furnished at both side faces 4 and 5, and front and rear faces 6 and 7, respectively, and fitting parts 13 which are fitted to the fitting hole of the main body of an adjacent gearbox on both end parts in order to connect the gearboxes, a fitting leg 15 which has a projected part 19 for fitting on the vertical face, which is fitted to the fitting hole of the main body of the gear box and a through hole 21 for a fixing screw 20 which fixes the main body of the gearbox to a plate 24 on the horizontal face, and a spacer rod 22 which has a through hole 23 in which a fixing screw is inserted and is inserted between a plate and the fitting leg when the fitting leg is fixed to the plate with a space. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a gearbox kit for teaching materials used in practical lessons of elementary school students and junior high school students.
[0002]
[Prior art]
In the practical lessons of elementary school students and junior high school students, all the students are moving from the direction of producing the same kit to the same kit to the idea of increasing the creative power of each student individually.
[0003]
For example, in a kit for manufacturing a robot or the like, a base plate, a battery, a gear box containing a small motor and a reduction gear, a lever forming a link or an arm, a fixing screw, a nut, and the like are set. Therefore, the student sets the mounting position of the gear box with respect to the base plate based on the individual's idea, fixes the gear box to the base plate with fixing screws, or connects the lever to the output shaft protruding from the gear box and connects the crank to the crank. We construct models of walking robots and models of self-propelled vehicles by configuring the mechanism.
[0004]
[Problems to be solved by the invention]
However, there is a problem that, even when a robot is manufactured, only a simple operation can be performed with a gear box having a small motor and a reduction gear built therein. Further, even when a plurality of gear boxes are combined, the connection structure between the gear boxes becomes complicated, and the production is troublesome, and it is difficult to complete the gear box within a limited time of class time. Furthermore, since the base plate is made of punched metal, fixing screws and nuts are required when fixing the gear box to the base plate, and since the nuts protrude from the lower surface of the base plate, the stability and appearance are improved. There is a problem in terms.
[0005]
SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances. It is an object of the present invention to enable a plurality of gear boxes to be connected arbitrarily and easily in vertical and horizontal directions, a right angle direction, and the like. It is another object of the present invention to provide a teaching material gear box kit that can easily fix a gear box to a base only with fixing screws without using a nut.
[0006]
[Means for Solving the Problems]
SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a gear box comprising a small motor and a hexahedron having upper and lower surfaces, both side surfaces, and front and rear surfaces which incorporates a plurality of gears interlocked with a rotation shaft of the small motor. A gearbox having a main body, and an output shaft interlocking with the gear protruding from both side surfaces of the gearbox main body, and upper and lower surfaces, both side surfaces, and front and rear surfaces of the gearbox main body having the same inner diameter. A joint having a plurality of fitting holes, fitting portions fitted to the fitting holes of adjacent gear box bodies at both ends, and connecting the gear boxes to each other; A mounting leg having a fitting projection fitted into the fitting hole, and having a through hole for a fixing screw for fixing the gear box body to the plate on a horizontal plane, and a through hole through which the fixing screw is inserted. And The only legs in securing spaced relative to the plate, in teaching gear box kit characterized by comprising a spacer rod interposed between said plate and the mounting feet.
[0007]
According to a second aspect of the present invention, the plate according to the first aspect is made of a synthetic resin material, and a plurality of small holes into which a screw portion of the fixing screw is screwed are provided in a plate surface in a longitudinally and laterally aligned state. It is characterized by being.
[0008]
According to a third aspect of the present invention, the joint according to the first aspect has a through hole for leading a lead wire that penetrates in an axial direction and electrically connects a small motor inside the gear box body to an external battery and the like. It is characterized by doing.
[0009]
According to the above configuration, the gear box bodies can be arranged side by side, stacked vertically, or arranged at right angles, or stacked horizontally, and a plurality of gear box bodies can be connected. That is, one end of the joint is tightly fitted into one or a plurality of fitting holes provided on the side surface of one gear box body, and the fitting hole provided on the side surface of the other gear box body is fitted with the joint hole. Tightly fitted to the other end.
In this state, when the pair of gear box bodies are brought into close contact with each other, the two gear box bodies are connected by one or more joints. Therefore, it is not necessary to connect with a fixing screw or the like, and the connection can be made easily.
[0010]
When fixing the gearbox body to the nutless universal plate, the fitting projections of the plurality of mounting legs are closely fitted into the fitting holes of the gearbox body, and the vertical surfaces of the mounting legs are Join to the side. Then, the gear box body can be fixed to the plate without using a nut by inserting a fixing screw through an insertion hole provided on a horizontal surface of the mounting leg and screwing the fixing screw into a small hole of the plate.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0012]
FIG. 1 is a perspective view of a gear box kit for teaching materials. In the figure, reference numeral 1 denotes a gear box main body formed of a synthetic resin material such as ABS, which is divided into upper and lower parts. A plurality of gears interlocked with the rotating shaft are built in.
[0013]
The gear box body 1 is a hexahedron composed of an upper surface 2, a lower surface 3, a left side surface 4, a right side surface 5, a front surface 6, and a rear surface 7, and a part of both side surfaces 4, 5 has a hexagonal cross section which is interlocked with a gear. The shaft 8 is provided to protrude. The upper surface 2, the lower surface 3, the left side surface 4, the right side surface 5, the front surface 6, and the rear surface 7 of the gear box main body 1 are provided with a plurality of fitting holes 9 having the same inner diameter. Further, a plurality of heat radiation holes 10 are provided on the upper surface 2 and the lower surface 3.
[0014]
In the figure, reference numeral 11 denotes a joint formed of a synthetic resin material such as ABS, for example, which is a cylindrical body having a flange portion 12 at an intermediate portion in the longitudinal direction, and having a tight fit in the fitting hole 9 of the gear box body 1 at both ends. There is provided a fitting portion 13 to be fitted to the. Further, a through hole 14 is provided in the axial center of the joint 11. When the gear box bodies 1 are connected to each other, the gear box bodies 1 can be connected to each other by fitting the fitting portions 13 of the joints 11 into the fitting holes 9 of the adjacent gear box bodies 1. ing. Further, the through hole 14 can be used for drawing in a lead wire when electrically connecting a small motor inside the gear box body 1 to an external battery or the like.
[0015]
In the figure, reference numeral 15 denotes a mounting leg formed of, for example, a synthetic resin material such as ABS, and has a vertical surface 16, a horizontal surface 17, and a reinforcing portion 18. On the back surface of the vertical surface 16, there is provided a fitting projection 19 having a cross-shaped cross section that is fitted tightly into the fitting hole 9 of the gear box body 1. The horizontal surface 17 is provided with an insertion hole 21 formed of a long hole through which a fixing screw 20 for fixing the gear box body 1 to a plate described later is inserted.
[0016]
In the figure, reference numeral 22 denotes a spacer rod formed of, for example, a synthetic resin material such as ABS, and has an insertion hole 23 through which the fixing screw 20 is inserted. When the attachment leg 15 is fixed to the plate while being separated from the plate, the attachment leg 15 is interposed between the plate and the attachment leg 15.
[0017]
In the figure, reference numeral 24 denotes a nutless universal plate (hereinafter, simply referred to as a plate) formed of a synthetic resin material such as ABS, for example, and a number of small holes 25 into which the screw portion of the fixing screw 20 is screwed are formed on the plate surface. They are drilled in the vertical and horizontal directions.
That is, when the screw portion of the fixing screw 20 is screwed into the small hole 25, a female screw portion is formed and fixed on the inner peripheral surface thereof, and the plate 24 functions as a nut without using a nut. .
[0018]
The fitting holes 9 formed in the upper surface 2 and the lower surface 3 of the gear box main body 1 are deep holes, and a screw hole 27 through which a screw 26 is inserted is provided at the bottom. Therefore, the gear box main body 1 divided into upper and lower parts by the screws 26 and the nuts 28 is fixed. At this time, a nut catcher 29 for supporting the nut 28 is provided. The nut catcher 29 has a small-diameter rod shape, and is provided at its tip with a projection 30 that is pressed into the nut 28 by approximately half in the depth direction of the screw hole.
[0019]
In the figure, reference numeral 31 denotes a small noiseless motor, and a motor holder 33 having a pair of claws 32 is provided on the front surface thereof. When the noiseless small motor 31 is replaced with a small motor built in the gear box body 1, the noiseless small motor 31 can be attached to the gear box body 1 with a single touch by the motor holder 33.
[0020]
Next, the internal structure of the gear box main body 1 will be described, as shown in FIG. The inside of the gear box body 1 is partitioned into a motor chamber 36 and a gear chamber 37 by a partition plate 35. A small motor 38 is housed in the motor chamber 36.
[0021]
The small motor 38 is housed in a plastic case 39, and the plastic case 39 is fixed to the gear box body 1. An input gear 41 is provided on a rotating shaft 40 of the small motor 38. In the gear chamber 37, the output shaft 8 and the driven shaft 42 are provided separately and in parallel. A face gear 43 meshing with the input gear 41 is fitted to the output shaft 8, and a small-diameter gear 44 is integrally provided on the face gear 43 coaxially with the face gear 43 to form a first transmission gear 45. Further, a second transmission gear 46 formed of a spur gear meshing with the small diameter gear 44 of the first transmission gear 45 is fitted to the driven shaft 42. The second transmission gear 46 is provided integrally with a small-diameter gear 47 coaxially therewith.
[0022]
A third transmission gear 48 made of a spur gear meshing with the small diameter gear 47 of the second transmission gear 46 is fitted to the output shaft 8. The third transmission gear 48 is provided integrally with a small-diameter gear 49 coaxially therewith. A fourth transmission gear 50 formed of a spur gear meshing with the small diameter gear 49 of the third transmission gear 46 is fitted to the driven shaft 42. The fourth transmission gear 50 is provided integrally with a small-diameter gear 51 coaxially therewith. A fifth transmission gear 52 made of a spur gear meshing with the small diameter gear 51 of the fourth transmission gear 50 is fitted to the output shaft 8. A hexagon nut 53 that engages with the output shaft 8 is provided on a side portion of the fifth transmission gear 52, and rotation of the fifth transmission gear 52 is transmitted to the output shaft 8.
[0023]
Next, the operation of the gear box kit for teaching material configured as described above will be described. FIG. 3 shows a variation in which two gear box bodies 1a and 1b are connected to form a common drive mechanism or independently separate drive mechanisms. FIG. 3 (a) shows the gear box bodies 1a and 1b turned sideways. They are arranged. (B) shows the gear box bodies 1a and 1b stacked vertically. (C) shows gear box bodies 1a and 1b arranged at right angles. (D) shows the gear box bodies 1a and 1b stacked sideways.
[0024]
FIG. 4 shows a procedure for connecting the gear box bodies 1a and 1b. One end of the joint 11 is closely fitted to one or a plurality of fitting holes 9 provided on the side surface of one of the gear box bodies 1a. Then, the fitting hole 9 provided on the side surface of the other gear box main body 1b is closely fitted to the other end of the joint 11. In this state, when the pair of gear box bodies 1a and 1b are brought into close contact with each other, the two gear box bodies 1a and 1b are connected by one or a plurality of joints 11. Therefore, it is not necessary to connect with a fixing screw or the like, and the connection can be made easily.
[0025]
When fixing the gear box body 1 to the plate 24, the fitting projections 19 of the plurality of mounting legs 15 are closely fitted into the fitting holes 9 of the gear box body 1, and the vertical surface 16 is Joined to the side of the box body 1. Then, the gear box body 1 can be fixed to the plate 24 without using a nut by inserting the fixing screw 20 into the insertion hole 21 provided in the horizontal surface 17 and screwing it into the small hole 25 of the plate 24. it can.
[0026]
When the gear box body 1 is fixed to the plate 24 while being spaced apart from the plate 24, the spacer rod 22 is set upright between the plate 24 and the mounting leg 15 as shown in FIG. Is inserted into the insertion hole 23 and screwed into the small hole 25 of the plate 24, so that the gear box body 1 can be floated and attached to the plate 24.
[0027]
FIG. 6 shows a model of a shovel car, and two gear box bodies 1 are mounted side by side on the lower surface of a plate 24 serving as a vehicle body. Wheels 54 are mounted on both ends of the output shaft 8 of the two gear box bodies 1. One gear box main body 1 is mounted on the upper surface of the plate 24 via a spacer rod 22. One end of a rotating arm 55 is fixed to both ends of the output shaft 8 of the gear box body 1.
[0028]
On the other hand, an L-shaped mounting member 56 is fixed to the plate 24 by the fixing screw 20, and one end of a link 57 is rotatably supported by the mounting member 56. A shovel 58 is attached to a free end of the link 57, and a free end of a rotating arm 55 is rotatably connected to an intermediate portion of the link 57.
[0029]
Therefore, the wheels 54 can be rotated by the output shafts 8 of the two gearbox bodies 1 provided on the lower surface of the plate 24 to run on their own, and the output of one gearbox body 1 provided on the upper surface of the plate 24 can be increased. The turning arm 55 is turned by the shaft 8, and the shovel 58 can be turned up and down.
[0030]
The model of the excavator is an example, and the gearbox body can be easily connected in both vertical and horizontal directions. Any model can be manufactured.
[0031]
【The invention's effect】
As described above, according to the present invention, a plurality of gear boxes can be connected arbitrarily and easily in the vertical and horizontal directions, at right angles, etc., and further, power can be transmitted between the gear boxes without using a nut. The gearbox can be easily fixed to the base with only the fixing screw. Therefore, it can be completed within the limited time of class time.
[Brief description of the drawings]
FIG. 1 is a perspective view of a gearbox kit for teaching materials according to a first embodiment of the present invention.
FIG. 2 is an exemplary plan view showing the internal structure of the gear box according to the embodiment;
FIG. 3 shows the same embodiment, and (a) to (d) are perspective views showing a connection example of a gear box main body.
FIG. 4 is an exemplary sectional view showing a state where the gear box bodies of the embodiment are connected to each other by a joint;
FIG. 5 is an exemplary perspective view showing a state where the gear box body of the embodiment is fixed to a base;
FIG. 6 is an exemplary perspective view of a state in which a model of the shovel car is manufactured using the gear box body according to the embodiment;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Gear box main body, 8 ... Output shaft, 9 ... Fitting hole, 11 ... Joint, 15 ... Mounting leg, 20 ... Fixing screw, 22 ... Spacer rod, 24 ... Nutless universal plate, 29 ... Nut catcher, 38 ... Small motor

Claims (3)

It has a gear box body consisting of a small motor and a plurality of gears interlocking with a rotating shaft of the small motor, a top surface, both side surfaces, and a hexahedron of front and rear surfaces. A gear box protruding from both sides,
A plurality of fitting holes having the same inner diameter provided on each of the upper and lower surfaces, both side surfaces, and front and rear surfaces of the gear box body,
A joint which has fitting portions fitted to the fitting holes of adjacent gear box bodies at both ends, and connects the gear boxes to each other;
A mounting leg having a fitting projection fitted on a fitting hole of the gear box main body on a vertical surface, and having a through hole for a fixing screw for fixing the gear box main body to the plate on a horizontal surface;
It has an insertion hole through which the fixing screw is inserted, and has a spacer rod interposed between the plate and the mounting leg when the mounting leg is separately fixed to the plate. Characteristic gearbox kit for teaching materials. The plate is made of a synthetic resin material, and is a nutless universal plate in which a number of small holes into which a screw portion of the fixing screw is screwed are provided in a plate surface in a vertically and horizontally aligned state. The gearbox kit for teaching materials according to 1. The joint has a through hole for leading a lead wire that penetrates in an axial direction and electrically connects a small motor inside the gear box body and an external battery or the like. Item 2. The gearbox kit for teaching materials according to item 1.

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