JPH0443273Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an improvement of a power mechanism for a spring-driven toy vehicle.

(Prior art) The power mechanism that uses a mainspring to store power by reversing the wheels, etc., and runs the toy vehicle is assembled using resin molded products, but assembling the mainspring is troublesome, and this has not been done in the past, especially for small models. Since the method of manually winding and assembling the spring in advance was extremely inefficient and caused manufacturing problems, the inventor developed a technique in which the mainspring was inserted externally. However, in that case, it is necessary to drive the shaft into place to fix the tip of the mainspring.
As a result of further improvements, we completed a driving mechanism that allows the mainspring to be installed simply by inserting it.

(Technical Problem) Therefore, the problem of the present invention is to be able to incorporate the mainspring extremely easily, improve manufacturing efficiency,
The purpose is to improve handling.

(Technical Means) In order to achieve the above-mentioned object, the present invention provides a frame body 3 in which a circular recess 2 into which a spiral spring 1 is loaded is formed.
A mainspring spring stopper shaft 4 is attached, a gear mechanism 8 connecting a driving gear 5 integral with the stopper shaft 4 and a gear 7 integral with an axle 6 attached to the frame body 3 is assembled into the frame body 3, and further a circular recess 2 is attached. A recess 9 into which the engaging portion 1b of the outer end of the mainspring spring 1 is fitted is provided in a row on the inner circumferential surface of the mainspring spring 1. An insertion groove 11 is formed for engaging the straight tip 1a with the stop shaft 4, and a spiral spring mounting hole 12 is formed in the frame 3 communicating with the circular recess 2 extending from the outer edge beyond the bearing hole 10. be.

(Example) To explain in detail with the following examples, 1 is a mainspring spring whose tip is straight and the rear end is bent to form an engaging part 1b, and 2 is inside the frame 3 of the driving mechanism for housing the mainspring spring 1. It is a circular recess formed in the inner peripheral surface of the recess 9 into which the engaging portion 1b of the outer end of the mainspring fits.
are arranged in a row, and has a bearing hole 10 in the center of which the stop shaft 4 is rotatably mounted. The tip portion 1a is straight. The frame body 3 of the embodiment has two left and right sides as shown in FIG.
It is divided into two parts 3a and 3b, with an intermediate frame 3c interposed at the boundary thereof, and both parts 3a and 3b are combined into one body by means of a coupling means consisting of a protrusion 3d, a fitting hole 3e, and a claw 3f. 10a and 10b are the shaft holes of the gear 8f coaxial with the bearing hole 10 of the stop shaft 4, and 3g is the pawl 3f.
The engaging part is shown. The stop shaft 4 may be of a hollow type as illustrated in FIG. 1 or may be a solid type as illustrated in FIG. 9.

Thus, the drive gear 5 is formed integrally with the stop shaft 4,
The stop shaft 4 consists of a thick shaft portion 4a and a thin shaft portion 4b for bearing, and an insertion groove 11 for the mainspring tip portion 1a is provided so as to divide both shaft portions 4a, 4b into two. Further, the outer wall of the frame portion 3a has a bearing hole 1 extending from the outer edge of the frame.
0, and on the other side, a spiral spring mounting hole 12 is provided with a tip 12a extending substantially outside the thick shaft portion 4a, and the mounting hole 12 further has a through hole 12b formed in the inner circumferential surface of the circular recess 2. It is roughly L-shaped and connects the inside and outside throughout the entire area. A sixth gear 8f, which will be described later, is integrally formed on the other side of the stop shaft 4 on which the drive gear 5 is integrally provided.
The drive gear 5 and the sixth gear 8f may not be integrated with the stop shaft 4, but may be combined.

Further, 6 is an axle that is inserted through the shaft holes 6a and 6b of the frame 3, and 7 is an output gear that is integrally provided with the axle 6.
Reference numeral 8 denotes a gear mechanism that connects the gear 7 and the drive gear 5, including a first gear 8a that meshes with the drive gear 5, a second gear 8b that is coaxial with it, a third gear 8c that meshes with the second gear 8b, and a gear mechanism that is coaxial with it. A drive system consisting of a fourth gear 8d and a fifth gear 8e that meshes with the fourth gear 8d.
It consists of a power storage system connected to a sixth gear 8f coaxial with the driving gear 5 through a first gear 8a, a second gear 8a,
The set 8b and the fifth gear 8e are fitted with diagonal holes 8 so that they mesh only when the mainspring is released and when accumulating power, and idle at other times.
It is pivotally supported by g and 8h. 14 is a hole provided in the output gear 7 for inserting the axle 6 therethrough; 15 is a cylindrical member with the output gear 7 provided on one side; 16 is a frame 3, 3a for rotatably holding the member 15; The cylindrical part provided inside, 17, indicates a toy wheel.

3 and 4 are auxiliary tools for assembling the mainspring spring 1 into the above-mentioned driving mechanism A. A ruler plate 19 is fixed along the longitudinal direction on one side of the surface of the elongated main plate 18, and the ruler plate 19 is fixed parallel to the ruler plate 19. A winding strip 2 with a gap 20
1 is provided, and the winding strip 21 has a high coefficient of friction and has an anti-slip effect, and has grooves 21a on its surface.

In the above configuration, the drive system of the gear mechanism 8 is mainly installed on one side (left) of the inner frame 3c of the frame 3, the power storage system is installed on the other side (right), and the spiral spring 1 is further set. First, insert the tip end 1a into the insertion groove 11 of the stop shaft 4.
(Fig. 5, Fig. 6), the other part is placed in the mounting hole 12, and while rotating the stop shaft 4, it is rolled into the recess 2 (Fig. 7), and the outer end engaging part 1b is inserted into the recess. 2, and the engaging portion 1b at the outer end.
is engaged with and fixed in one of the recesses 9,
At this time, winding of the mainspring spring 1 can be carried out smoothly and efficiently by rotating the drive gear 5 while pressing it against the winding strip 21 of the auxiliary tool. When inserting the tip 1a of the mainspring spring 1 into the insertion groove 11 of the stop shaft 4, if it is inserted to a position where it protrudes outside of the thick shaft 4a, the tip 1 will be removed when retracted.
a is bent into a hook shape to ensure that the tip 1
a can be fixed to the stop shaft 4.

(Effect of the invention) Therefore, according to the invention, the gear mechanism 8 for transmitting the stored force of the mainspring spring 1 is assembled into the frame 3, the axle 6 is attached, and the mainspring spring stopper shaft 4 is attached in a substantially completed state. , the mainspring spring 1 is inserted into the circular recess 2 from the outside of the frame 3 through the mounting hole 12, the tip end is engaged with the stop shaft 4 integrated with the drive gear 5, and the spring spring 1 can be assembled by simply turning the stop shaft 4. It is extremely easy to manufacture. Moreover, the tip of the mainspring spring 1 is straight as it is cut (it may have curls).
Since the mainspring spring 1 does not require any processing, and since the assembled state of the mainspring spring 1 can be confirmed, there is no problem of it being set incorrectly or not being able to move later. Since the mainspring spring 1 can be installed after the frame 3 is assembled, springs 1 with different strengths, lengths, and shorts can be selectively installed according to the needs after the frame is assembled, and the same goes for the axle 6.
Only the frame 3 made of molded products is manufactured and stored,
It has remarkable effects such as being able to be shipped with predetermined spiral springs 1 and axles 6 installed upon order.

[Brief explanation of the drawing]

The drawings show an embodiment of the driving mechanism for a toy traveling vehicle according to the present invention, in which Fig. 1 is an exploded perspective view, Fig. 2 is a bottom view, and Fig. 3 is a perspective view of the mainspring spring winding aid in use. Figure 4 is a front view, Figure 5 is a sectional view taken along line A-A in Figure 2 showing the winding process of the mainspring spring, Figure 6 is a side view, Figures 7 and 8 are the winding process. FIG. 9 is a perspective view showing a modification of the stop shaft. 1... Spring spring, 2... Circular recess, 3...
Frame body, 4... Stop shaft, 5... Drive gear, 6... Main shaft, 7... Gear, 8... Gear mechanism, 9... Notch,
10... Bearing hole, 11... Insertion groove, 12... Spring spring mounting hole.

Claims (1)

[Scope of utility model registration request] A mainspring spring stop shaft 4 is attached to a frame 3 in which a circular recess 2 into which a mainspring spring 1 is loaded is formed, a drive gear 5 integrated with the stop shaft 4, and a gear integrated with an axle 6 attached to the frame 3. 7 is assembled into the frame 3, and a recess 9 into which the engagement portion 1b of the outer end of the spiral spring 1 is fitted is arranged in a row on the inner peripheral surface of the circular recess 2. An insertion groove 11 is formed at the end of the stop shaft 4 that is supported in the bearing hole 10 to engage the straight tip 1a of the mainspring spring 1 with the stop shaft 4,
A mainspring spring mounting hole 12 is provided in the frame 3 communicating with the circular recess 2 over a range extending from the outer edge beyond the bearing hole 10.
A driving mechanism for a toy traveling vehicle, characterized in that it has the following configuration: