JPS6212871Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mainspring winding structure for a mainspring power device.

As shown in the drawing, mainspring 1 and mainspring 1
It is equipped with a central shaft 2 and a gear 3 attached to the central shaft 2, and the mainspring 1 is wound up by rotating the central shaft 2.
A mainspring power device capable of rotating a central shaft 2 to a gear 3 by the unraveling force of a mainspring 1 is widely used as a power device for running toys and the like. By the way, in this type of conventional power spring power device, as shown in Fig. 1, the mainspring winding metal fitting 11 is attached to the end of the central shaft 2, and the mainspring 1 is wound up by rotating the central shaft 2. There were some drawbacks.

(1) Since the mainspring 1 is wound up by directly turning the central shaft 2, a strong force is required to wind up the mainspring 1, and children with weak strength may not be able to wind up the mainspring 1.

(2) In order to maintain the mainspring 1 in the wound state, a stopper mechanism must be provided to prevent the mainspring 1 from unwinding.

The present invention has been made in order to eliminate the above-mentioned drawbacks.

Next, an example in which the spring winding structure of the spring power device according to the present invention is installed in a moving toy will be explained based on the drawings from FIG. 2 onwards. 1 is a mainspring, 2 is a central shaft of the mainspring 1, and 3 is a pinion attached to the lower end of the central shaft 2 so as to rotate together with the central shaft 2. 4 is a crown gear attached to the upper end of the center shaft 2, 5 is a first pinion that meshes with one end of the crown gear 4, and 6 is the first pinion 5 approximately 180 degrees
The second pinion 7, which meshes with the other end of the crown gear 4 with a phase angle of .degree., has the first and second pinions 5 and 6 attached thereto, and by sliding it in the axial direction, the first and second pinions A pinion shaft 8 is provided on the pinion shaft 7 so that the engagement between 5 and 6 and the crown gear 4 can be disengaged, and when a force is applied to the pinion shaft 7 in the direction of winding up the mainspring, the second pinion 6 is This is a ratchet mechanism that makes the pinion shaft 7 free relative to the shaft 7, and the ratchet mechanism 8 includes a ratchet wheel 8a fixed to one end of the pinion shaft 7 and a ratchet wheel 8b fixed to one side of the second pinion 6. and a coil spring 8c that is interposed between the first pinion 5 and the second pinion 6 and urges the second pinion 6 toward the ratchet wheel 8a, so that the second pinion 6 is connected to the ratchet wheel 8a. By being biased toward the 8a side, the ratchet wheel 8b is brought into pressure contact with the ratchet wheel 8a, and the respective teeth 8b' and 8a' are engaged with each other, and a force is applied to the pinion shaft 7 in the winding direction (rightward direction). When adding , the pawl 8a' of the ratchet wheel 8a and the ratchet wheel 8b
The pawl 8b' is disengaged, leaving the second pinion 6 free with respect to the pinion shaft 7, thereby making it possible to rotate the pinion shaft 7 in the direction of winding up the mainspring (the second pinion 6
If the pinion shaft 7 is not free from the pinion shaft 7, the two first and second pinions 5 and 6 are meshed with the crown gear 4 with a phase of approximately 180°, so the pinion shaft 7 to the center shaft 3 will be cannot be rotated). In addition, 9 is a frame fixed to the base of the toy, and supports the pinion shaft 7 rotatably and slidably in the longitudinal direction of the shaft, and 10 is a frame for rotating the shaft attached to one end of the pinion shaft 7. It is a knob. Since the present invention has the above-described structure, when the pinion shaft 7 is rotated in the direction of winding up the mainspring by holding the knob 10, the first pinion 5 turns the crown gear 4 to the center shaft 3, and the mainspring 1 is wound up. Mainspring 1 is crown gear 4
The two first and second pinions 5 and 6 are in mesh with the
This automatically prevents the wheel from releasing, resulting in a so-called stopper state. And from this state, knob 1
0 to slide the pinion shaft 7 in the direction of the arrow and disengage the first and second pinions 5 and 6 from the crown gear 4.
The gear 3 rotates, and a toy or the like is driven by rotating a wheel or the like via a group of transmission gears (not shown).

As explained above, the present invention consists of a mainspring 1, a central shaft 2 of the mainspring 1, and a gear 3 attached to the central shaft 2.
It is equipped with
In the mainspring power device, the crown gear 4 rotates together with the center shaft 2, the first pinion 5 meshes with one end of the crown gear 4, and the phase of the first pinion 5 is approximately 180 degrees. The second pinion 6, which meshes with the other end of the crown gear 4, and the first and second pinions 5 and 6 are attached, and by sliding in the axial direction, the first and second pinions 5 and 6 are connected to each other. A pinion shaft 7 capable of disengaging the crown gear 4
and a ratchet mechanism 8 which makes the second pinion 6 free with respect to the pinion shaft 7 when a force is applied to the pinion shaft 7 in the direction of winding up the mainspring. Since it has a mainspring winding structure, it has the following effects.

(1) Since the structure is such that the center shaft 2 is rotated via the pinion shaft 7, the first pinion 5, and the crown gear 4, the first
By changing the gear ratio of the pinion 5 and the crown gear 4, it becomes possible to wind the mainspring 1 with a weaker force than in the conventional case of directly rotating the center shaft 2.

(2) Unless the pinion shaft 7 is slid to disengage the first and second pinions 5, 6 and the crown gear 4, the wound mainspring 2 cannot be unwound, so special measures are taken to prevent the mainspring 1 from unwinding. There is no need to provide a stopper mechanism.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing a conventional example, Fig. 2 and the following show an example of the present invention, Fig. 2 is an exploded perspective view, and Fig. 3 is a sectional view in an assembled state. 1...Spring, 2...Center shaft, 3...Gear, 4
...Crown gear, 5, 6...First and second pinions, 7...Pinion shaft, 8...Ratchet mechanism.

Claims (1)

[Scope of utility model registration request] A mainspring 1 to which an outer end is fixed, a center shaft 2 to which an inner end of the mainspring 1 is connected, a crown gear 4 fixed to one end of the center shaft 2, and a mainspring 1 perpendicular to the rotation axis of the crown gear 4. and a pinion shaft 7 disposed near the tooth-forming surface of the crown gear 4 so as to be slidable only in the axial direction; A first pinion 5, a ratchet 8a fixed to the pinion shaft 7 at a predetermined distance from the first pinion 5, and a ratchet 8b that meshes with the ratchet 8a on one end surface. Pinion 5 and ratchet wheel 8
a, and is slidably provided on the pinion shaft 7 and is biased toward the ratchet 8a by a coil spring 8c interposed between the first pinion 5 and the ratchet 8a. A mainspring winding structure for a mainspring power device, characterized in that it is configured with a second pinion 6 which is allowed to rotate only in one direction and can be engaged with another part of the crown gear 4.