JP2003083235A - Spiral spring driving mechanism and instrument using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve an assembling property of a spiral spring mechanism module. SOLUTION: The spiral spring mechanism is constituted of a spiral spring mechanism module provided with a spiral spring for accumulating a mechanical energy, a spiral spring accommodation part for accommodating the spiral spring and a transmission means for giving/receiving the mechanical energy between the spiral spring and a driving mechanism; and the driving mechanism. A winding/tightening step becomes efficient by providing a spiral spring winding/ tightening means caused by a relative motion of the transmission means or an output wheel engaged with the transmission means and the driving mechanism.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mainspring drive mechanism for operating a drive mechanism by the power of a mainspring, and a device using the same.

[0002]

2. Description of the Related Art Conventionally, in order to assemble a mainspring mechanism module into a drive mechanism such as a lid or a door of equipment, it is necessary to assemble it with an initial number of windings so that a torque required to drive the drive mechanism is generated. was there.

Further, as disclosed in JP-A-59-222631, after assembling, a thin pin or the like is inserted from the outside of the mainspring accommodating portion into a cylindrical hole rounded into a cylinder at the outer end of the mainspring, and inside the accommodating portion. There has been a method of adjusting the initial winding number at which the required torque is generated by moving the hooking position of the mainspring.

[0004]

However, in the case of the prior art, in order to give a predetermined initial number of turns to the mainspring, it was necessary to count the number of turns of the mainspring at the time of tightening. Therefore, a dedicated device is required, and it is difficult to assemble easily and quickly, which is not suitable for mass production. Furthermore, if there is variation in the torque characteristics of the mainspring,
If you set the initial number of turns only by the number of turns, the torque characteristics of the spring mechanism module output will vary, so
There was a problem in quality.

Further, a method of adjusting the initial number of turns of the mainspring mechanism module after installation has been proposed. However, this method requires specialized tools and techniques and is not suitable for mass production.

Further, when the mainspring is completely rewound due to accidental rewinding of the mainspring due to a failure or drop, or when the mainspring is completely rewound and the mainspring mechanism module is replaced, according to the conventional technique, the mainspring is again provided with a predetermined initial number of windings. It was very difficult to handle because it required specialized equipment, tools and techniques to give.

Moreover, in the prior art, the mainspring is damaged or deformed due to over-tightening, which not only affects the durability and characteristics of the mainspring, but also leads to a reduction in the reliability of the device itself equipped with the mainspring mechanism module. There was an occasion.

From such a background, there has been a demand for a mainspring drive mechanism having a structure capable of easily giving a predetermined initial winding number of the mainspring.

[0009]

SUMMARY OF THE INVENTION The present invention comprises a mainspring for accumulating mechanical energy, a mainspring accommodating portion for accommodating a mainspring, and a transmission means for exchanging mechanical energy between the mainspring and a drive mechanism. In a mainspring mechanism including a mainspring mechanism module and a drive mechanism, the transmission means or an output vehicle engaged with the transmission means, and a mainspring winding means by relative movement of the drive mechanism are provided. And

That is, when the mainspring mechanism module is incorporated into the drive mechanism, it is necessary to tighten the mainspring up to a predetermined number of turns in which a force required for the operation of the drive mechanism is generated. For example, if the mainspring mechanism module is incorporated into the drive mechanism and then tightened, the winding force of the mainspring is transmitted to the drive mechanism as well, so that it is impossible to perform the tightening in the assembled state.

According to the present invention as described above, the mainspring mechanism module can be wound up to a predetermined number of turns while being incorporated in the drive mechanism. Specifically, when the transmission means or the output vehicle engaged with the transmission means and the drive mechanism are assembled while relatively moving, this relative movement is converted into rotational energy at the same time, and the mainspring mechanism module As a result, it becomes possible to tighten the winding while incorporating the mainspring mechanism module. Therefore, the assembly time can be shortened, the cost can be reduced, and the assembling can be performed easily and quickly, so that mass production can be performed.

Further, since there is no need to provide a special structure for winding the mainspring, the structure of the mainspring mechanism module becomes simple and the manufacturing cost can be suppressed. Further, by making the relative movement amount of the drive mechanism and the mainspring mechanism module correspond to the number of winding turns, anyone can easily tighten the mainspring to a predetermined number of turns, thus improving workability.

Further, even if the mainspring is completely rewound due to unintentional rewinding of the mainspring due to a failure or drop, or due to disassembly and repair, the drive mechanism and the mainspring mechanism module are simply moved. Since the mainspring can be tightened by a predetermined number of turns, it is possible to provide a mainspring drive mechanism having excellent maintainability.

Further, if the total length of the rack is set so as to correspond to the number of turns at which the torque required for the drive mechanism is generated,
Excessive stress due to over-tightening of the mainspring is not applied, and breakage and deformation of the mainspring can be prevented. Therefore, the durability of the mainspring is improved and the reliability of the mainspring drive mechanism is improved.

As described above, anyone can easily tighten the mainspring to a predetermined number of windings, and since the winding method of the mainspring mechanism module is generalized, a product equipped with the mainspring drive mechanism of the present invention can be used. Reliability is also improved.

Further, in the mainspring drive mechanism according to the first aspect of the present invention, the mainspring winding means may be constituted by a gear and a rack.

With this configuration, the drive mechanism and the mainspring mechanism module are assembled while moving relative to each other, and at the same time, relative movement also occurs between the rack and the gears, so that the drive mechanism linearly moves. Is converted into rotational energy by a gear via a rack, so that winding can be tightened.

That is, in the mainspring winding step, the steps of assembling the drive mechanism and the mainspring mechanism module are made common, so that the number of assembling steps can be reduced and the productivity is improved. Further, by simply setting the mainspring mechanism module in the drive mechanism, it becomes possible to standardize the mainspring winding process, which has conventionally been required to have a highly difficult assembling technique in two processes. .

Further, in the mainspring drive mechanism according to the first or second aspect, the mainspring tightening means may include a rack having a length equal to or longer than the working distance of the drive mechanism.

With this configuration, it is possible to realize the incorporation for continuing to apply the mainspring load to the drive unit even after the operation of the drive mechanism is completed. More specifically, the torque of the mainspring increases as the number of turns increases. When the mainspring is used as a power source, it is rarely used from 0 turns, and the minimum number of turns that provides a predetermined torque is often used. For example, in the mainspring drive mechanism, when the number of windings of the mainspring is 0 at the end of the operation of the drive mechanism, no load is applied to the drive mechanism, so the drive mechanism moves even with a little force. That is, it becomes a very unstable state. Therefore, it is necessary to give a certain amount of torque to stabilize even when the operation of the drive mechanism ends.
It is necessary to give several turns even when the operation of the drive mechanism ends.

According to the present invention, the length of the rack is set to be longer than the operating section of the drive mechanism, and the rack having an excessive length is used as the pre-winding rack, so that when the drive mechanism is attached to the main body, the pre-winding rack is mounted. It is possible to tighten by the number of turns at the end of operation. As a result, even if the operation of the drive mechanism is completed, it is possible to continue applying a predetermined load, and it is possible to realize stable operation.

Further, in the prior art, in order to obtain the number of windings at the end of the operation of the drive mechanism, a complicated mainspring winding step and an assembling step are required, but according to the present invention, a length longer than the working distance of the drive mechanism is required. By providing the rack having the height, it was possible to realize the mainspring winding means which can be wound very easily only by relatively moving the section. As a result, the productivity is improved because the equipment and technology that were required in the past are not required.

The mainspring drive mechanism according to any one of claims 1 to 3, wherein the mainspring winding means includes an external winding rack connected to the rack. mechanism.

With this configuration, even when the initial number of windings given in advance at the end of the operation of the drive mechanism is relatively large, the length of the external winding rack connected to the outside is increased to increase the number of initial windings. be able to. In other words, by adjusting the length of the external winding rack, it is possible to freely set the initial number of windings, and it is possible to provide a mainspring drive mechanism with a high degree of freedom.

Even when the main drive mechanism side cannot secure a rack having a length longer than the working distance of the drive mechanism, the external winding rack can be connected to the main drive mechanism rack to easily adjust the initial number of windings. It is possible to give.

Further, when the number of initial windings of the mainspring is large,
A large tightening torque is required to fully tighten the number of turns, and if only a mainspring mechanism module is used as in the conventional case, a large torque is required not only on the mainspring mechanism module but also on the side of the winding device. , Needed a structure that could withstand heavy loads. However, in the present invention, since the drive mechanism and the mainspring mechanism module are moved relative to each other on the main drive mechanism rack and the preliminary winding rack, the winding load is distributed not only to the mainspring mechanism module but also to the entire drive mechanism. Since it is possible, the winding can be performed with a relatively simple mechanism.

Further, the mainspring drive mechanism according to any one of the first to fourth aspects may be characterized in that the mainspring winding number regulating means is provided.

In the present invention as described above, the predetermined number of windings can be obtained only by preparing a rack having a length that can be wound more than the predetermined number of windings without adjusting the length of the rack so that the predetermined number of windings can be obtained. You can Specifically, when the drive mechanism and the mainspring mechanism module are moved relative to each other, if the length of the rack is tightened to a predetermined number of turns or more, if the predetermined number of turns is reached, the number-of-turns regulating means works. So it doesn't tighten any further. Therefore, even if a rack corresponding to the number of turns of the mainspring is not prepared, a predetermined number of turns can be easily obtained only by performing relative movement.

Furthermore, even if the number of windings specification of the mainspring is changed to assemble a mainspring mechanism module that generates different torques, it is not necessary to adjust the rack length according to the number of windings, so products of various specifications can be used using the same rack. Can be incorporated. As a result, since the same assembly line can be used, it is possible to cope with small-lot production of a wide variety of products, and it is possible to provide a mainspring drive mechanism that is cost-effective.

Further, if the mainspring is over-tightened, an excessive load may be applied to the outer hook portion of the mainspring, causing breakage or deformation of the mainspring due to stress concentration. There is no excess and it is possible to improve the durability of the mainspring.

As described above, anyone can easily tighten the mainspring to a predetermined number of turns, and the method of incorporating the mainspring mechanism module is generalized. Therefore, the reliability of the product equipped with the mainspring drive mechanism of the present invention is high. The property is also improved.

Further, the mainspring drive mechanism according to any one of claims 1 to 5 may further include a damper braking means.

Conventionally, when the drive mechanism is driven, it depends only on the force of the mainspring. Therefore, the driving speed of the drive mechanism is the rewinding speed of the mainspring.
It was difficult to adjust this speed to an arbitrary speed. By using the damper braking means together as in the present invention, it becomes possible to obtain a braking force proportional to the rewinding speed of the mainspring, and it is possible to realize a smooth movement. In particular, when it is used for a cover or a lid of a small device, an added value such as a high-class feeling can be added to the device body.

Further, the load applied to the drive mechanism by repeating the abrupt drive operation is reduced, and the durability can be improved. Particularly, if a rapid force is continuously applied to the initial number-of-winding imparting means, it may be damaged, and by attaching a damper, it serves as a cushioning material, leading to improvement in reliability.

When the power of the mainspring is extremely large,
There is a possibility that a user may be injured by pinching a finger or the like in the drive mechanism, but this can be prevented because smooth driving can be realized by the damper braking means.

When the damper braking means is attached,
The force applied to the drive mechanism requires a balance between the force generated from the mainspring and the force braked by the damper, and delicate force management is required. Therefore, the torque management of the mainspring becomes strict, but according to the present invention, an accurate initial winding number can be easily provided, so that the drive mechanism can be reliably driven.

An apparatus using the mainspring drive mechanism according to any one of claims 1 to 6.

Present portable devices are required to be multifunctional and compact. Along with that, it was necessary to sacrifice operability in order to mount many functions in a small space. In order to solve this, a drive mechanism is often used, but since the installation space is small and the device body itself is small, the drive mechanism cannot be easily installed.

When the drive mechanism is incorporated in a small device,
A motor has been widely used as a driving power source. In the case of a motor, although it is easy to install, it is required to reduce the size and power consumption, and a power source that does not require electrical energy like the mainspring mechanism module in the present invention is required.

According to the present invention, even such a small device can be tightened by the relative movement of the drive unit and the main body, so that a winding device suitable for the small device is not required and the assembling property is improved. . Moreover, by installing an energy-saving mainspring drive mechanism, it has become possible to provide equipment with extremely high commercial value. Moreover, the mainspring mechanism module is installed in equipment that does not have electronic control, such as toys. You may.

In some cases, such as a motor, which requires strict torque control, the number of windings can be controlled by the length of the rack in the present invention, so that it is possible to provide a device with high performance.

[0042]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

[First Embodiment] FIG. 1 shows a first embodiment of the present invention.
1 illustrates a portable electronic device 1 including a drive mechanism 3 including a mainspring mechanism module 2 according to an embodiment.

FIG. 1 shows an image when the mainspring mechanism module 2 is incorporated into the portable electronic device 1. FIG. 1 is an example, and a drive mechanism such as a lid or a cover is provided. Any device will do. The portable electronic device 1 includes an input unit 11, a display unit 12, a main body 10 including a processing unit that does not display, and an input unit 11 that is a drive mechanism.
It is composed of a cover 13 for covering. Here, as the drive mechanism 3, the input unit and the display unit may be driven.

A gear wheel 21 is engaged as an output wheel of the mainspring mechanism module 2 and is incorporated in the main body 10. Further, the cover 13 is provided with a rack 81 so as to mesh with the gear 21. Here, the slide type driving operation of the cover 13 is realized by the movement of the gear 21 and the rack 81, but the present invention is not limited to such a slide type driving operation, and the output vehicle of the mainspring mechanism module 2 can be used. A rotary drive mechanism can also be realized by directly using it to drive the lid. Further, in FIG. 1, the rotation axis of the gear 21 is arranged in parallel with the surface of the cover 13, but it may be arranged so that the rotation axis of the gear 21 is perpendicular to the surface of the cover 13. Further, the rack 81 may be attached to the main body 10 and the mainspring mechanism module 2 may be attached to the cover 13. Also, not only racks and gears,
It may be a pulley and a belt.

The cover 13 is slidably mounted on the main body 10 and can be driven between A and B. When the upper end of the cover 13 is at the position A, the cover 13 is in a closed state. , B position when cover 1
3 is open. Further, when the cover 13 reaches the position B, the cover 13 is prevented from coming off.

FIG. 2 is a perspective view of the mainspring mechanism module 2 incorporated in the portable electronic device 1 of FIG. 1 when disassembled.

First, the structure of the mainspring mechanism module 2 shown in FIG. 2 will be specifically described. The gear 21, which is an output wheel, is engaged with a rotating shaft 22, which is the transmitting means 5 of the mainspring mechanism module 2, and the rotating shaft 22 is rotatably held in the center of the upper lid 23 and the mainspring housing portion 24. Here, the gear 21 is an output wheel, and a pulley or the like can be freely selected according to the output target. Further, the object that meshes with the output vehicle is the rack 81 shown in FIG.
In addition to the above, a belt, which corresponds to an output vehicle, may be used. Further, an upper lid 23 that rotatably holds the rotating shaft 22.
Then, the bearing portion 25 of the mainspring accommodating portion 24 may be fluid-lubricated by applying a rotary bearing, a sintered bearing, or oil and performing non-diffusion treatment. By arranging the bearings in this way, it is possible to prevent an increase in load and a decrease in output due to friction.

Further, the mainspring 4 is accommodated in the mainspring accommodating portion 24, the inner end of the mainspring 4 is connected to the rotating shaft 22, and the outer end is engaged with the mainspring accommodating portion 24. The engaging portion between the inner end of the mainspring 4 and the rotary shaft 22 is, as shown in the drawing,
The inner hook portion 26 is inserted into the rotary shaft 22, and the inner end of the mainspring 4 is sandwiched in the inner hook portion 26 so that the mainspring 4 and the rotary shaft 22 are engaged with each other.

In addition to this engagement method, the following method can be adopted. Providing a claw on the outer circumference of the rotating shaft,
You may make a hole in the inner end of the mainspring so that the hole and the claw can be hooked. At that time, if the cross-sectional shape of the rotating shaft is designed to have an Archimedean spiral, more stable torque can be extracted from the mainspring, and theoretically uniform stress can be tightened without gaps, so stress concentration does not occur. It can be suppressed and durability is improved.

Further, although the mainspring may be made of any material, it is desirable to use an alloy containing Cr, Co and Ni when it is required that the material has excellent toughness and durability. For example, Co: 30-40%, Ni: 10
~ 20%, Cr: 8-15%, W: 3-5%, Mo: 3
~ 12%, C: less than 0.03%, Ti: 0.1 to 2%, M
A composition of n: 0.1 to 2%, Si: 0.1 to 2%, and Fe: balance is used.

Further, the mainspring mechanism module 2 is fixed to the main body 10 so as to hold the outer wall of the mainspring accommodating portion 24. Here, a collar may be provided in the mainspring housing portion 24, and the collar and the main body 10 may be fixed.

Next, the operation of the mainspring mechanism module 2 will be specifically described.

Referring back to FIG. 1, the cover 1 is manually operated.
When 3 is closed, the linear movement of the cover 13 is converted into rotational movement via the rack 81, and the rotational force is transmitted to the gear 21. This rotational force is transmitted to the mainspring 4 via the rotary shaft 22, and energy is accumulated in the mainspring 4. When the cover 13 is completely closed, there is a switch mechanism (not shown) inside the main body 10, and the stopper 14 of the switch mechanism and the cover 13 are engaged with each other, thereby preventing the cover 13 from opening due to the rewinding of the mainspring 4.

When the cover 13 is opened, the stopper 14 is interlocked by pushing the switch 15 provided in the switch mechanism, and the cover 13 is disengaged from the stopper 14, and at the same time, the energy accumulated in the mainspring 4 is rotated by the rotary shaft 22.
It is transmitted to the cover 13 via the gear 21 and the rack 81,
Automatically open with mainspring energy.

Next, the winding of the mainspring mechanism module 2 will be specifically described.

As shown in FIG. 1, the drive section of the cover 13 is between AB. In order for the cover 13 to be driven by the mainspring, it is necessary to apply the torque required for driving to the cover 13 over the entire AB section. In order to do so, it is necessary to set the mainspring 4 so that the required torque is generated over the entire AB section.

FIG. 3 shows a torque curve showing the relationship between the torque of a typical mainspring and the number of turns. As the mainspring is tightened, the torque sharply increases with respect to the number of turns in the first section 12, but gradually becomes gentle, and the torque hardly increases with respect to the number of turns in the section 23, and finally the maximum torque point. Reach 4. When using such a mainspring, a gentle section 23 of the torque curve is used. Further, the maximum torque generation region, that is, the maximum value in terms of stress also occurs just before winding, and the mainspring is deformed due to overwinding, which greatly affects the durability of the mainspring. Therefore, at the time of actual use, the point 3 which is returned by about 1 turn is used as the maximum set torque. That is, this maximum set torque is the torque generated at point A shown in FIG.
The minimum set torque is the torque generated at point B shown in FIG.

As described above, in order to assemble the mainspring mechanism module with the cover 13 tightened, the number of turns of the mainspring mechanism module 2 needs to be previously tightened to the number of turns at the maximum set torque shown in FIG. is there.

However, in the present invention, by mounting the mainspring winding means by the relative movement of the cover 13 and the main body 10 as shown in this embodiment, it is possible to perform the winding while assembling. FIG. 4 shows the structure of the spiral winding means. For example, as an example, the case of using the mainspring winding means 60 in the portable electronic device 1 of FIG. 1 will be described.

FIG. 4 is a perspective view of the portable electronic device 1 of FIG. 1 with the cover 13 removed. First, the structure of the spiral winding means 60 will be described. Body 10
In addition, the mainspring mechanism module 2 is incorporated, and only the gear 21 has a shape protruding outward. When the cover 13 is attached, this portion corresponds to a position where the main body 10 and the cover 13 overlap each other, and is invisible in normal use.

On the back surface of the cover 13, a rack 81
Are attached so that the rack 81 can function from the tip of the cover 13. This is the cover 1 body 1
When it is attached to 0, the gear 21 and the rack 81 are engaged with each other and are attached while sliding in the opening and closing direction of the cover 13. The tip of the rack 81 is
The tooth height of the rack 81 may be gradually increased so that the gear 21 is easily meshed. Here, of course, the cover 13 and the rack 81 may be integrally formed of resin or the like. Further, the main body 10 has a stopper claw 6 that prevents the cover 13 from coming off when the cover 13 is fully opened.
1 is provided, and a claw receiver 62 corresponding to the protrusion is also provided on the cover 13. When the cover 13 is attached, the stopper claw 61 can be attached while sliding.
The mounting side is chamfered.

Next, a method for winding the mainspring will be described. The mainspring mechanism module 2 is incorporated in the main body 10 in a state where the mainspring is rewound. Rack 8 with cover 13
1 is set longer than the AB section shown in FIG.
The extra rack section CD, that is, the preliminary winding rack 6
By making the mainspring mechanism module 3 slide, the minimum set torque shown in FIG. 3 is obtained.

First, the rack 81 provided in the cover 13
Engage the tip of the gear with the gear 21. And cover 1
By sliding 3 as it is, the mainspring 4
Is tightened, and when the number of turns is such that the minimum set torque of the mainspring is generated, the stop claw 61 of the main body and the claw receiver 62 of the cover engage with each other, and the cover 13 cannot be removed from the main body. Then, the number of turns is such that the maximum set torque is generated when the cover 13 is completely closed. If the rack length required to obtain the minimum set torque of the mainspring is required, and if more racks are required, the rack may be designed so that the mainspring starts up faster.

According to the first embodiment as described above, the following effects can be obtained.

In other words, after the mainspring mechanism module 2 is assembled, the mainspring 4 can be wound and tightened simply by attaching the cover 13 to the main body while sliding it. Therefore, the winding step before the installation is unnecessary, and the cover 13 and the main body are not required. The mainspring can be tightened while assembling 10. That is,
Since the spring winding process and the process of setting the cover 13 on the main body 10 are made common, the assembly process can be reduced and the productivity is improved. Further, only by the simple work of setting the cover 13 on the main body 10, it becomes possible to substitute the spring winding process which has conventionally required two processes and requires a highly difficult assembling technique. Therefore, it is possible to shorten the assembly time, reduce costs, etc., and
Since it can be installed easily and quickly, it is possible to support mass production.

Further, since it is not necessary to provide a structure for holding the wound state and a special structure for winding, the structure of the mainspring mechanism module 2 becomes simple and the manufacturing cost can be suppressed.

Further, by making the relative movement amount of the cover 13 and the main body 10 correspond to the number of winding turns, anyone can easily tighten the mainspring to a predetermined number of turns, thus improving workability.

Further, even if the mainspring is completely rewound due to unintentional rewinding of the mainspring due to a failure, drop, or disassembly and repair, the mainspring 10 can be simply driven by relatively driving the cover 13 and the main body 10. Since it has become possible to tighten the coil in a predetermined number of turns, it is possible to provide a mainspring drive mechanism having excellent maintainability.

Further, if the mainspring is over-tightened, an excessive load may be applied to the outer hook portion of the mainspring, causing breakage or deformation of the mainspring due to stress concentration. There is no excess and it is possible to improve the durability of the mainspring.

As described above, anyone can easily tighten the mainspring to a predetermined number of windings, and since the winding method of the mainspring mechanism module 2 is generalized, a product equipped with the mainspring drive mechanism of the present invention can be used. The reliability of is also improved.

Further, the rack 8 having a length longer than the opening / closing section
1 is provided, it is possible to realize the incorporation for continuing to apply the spring load to the cover 13 even when the cover 13 is open. More specifically, the torque of the mainspring increases as the number of turns increases. When the mainspring is used as a power source, it is rarely used from 0 turns, and the minimum number of turns that provides a predetermined torque is often used. For example, in the mainspring drive mechanism, when the cover 13 is open and the number of turns of the mainspring is 0, the cover 13 is in a state in which no load is applied, and therefore the cover 13 moves even with a small force. That is, the open state is very unstable. Therefore, even when the cover 13 is open, it is necessary to give a certain amount of torque to stabilize it. To achieve this, several turns are applied to the mainspring as the initial number of turns with the cover open. I need to put it.

In the present invention, the length of the rack 81 is covered by the cover 13.
By setting the length to be longer than the operation section of and the extra length rack to be the preliminary winding rack 63, when the cover 13 is attached to the main body 10, the preliminary winding rack 63 can perform the initial number of windings. It is the one. As a result, a predetermined load can be applied to the cover 13 even when the cover 13 is open, and stable driving operation can be realized.

Further, in the prior art, in order to obtain the initial number of windings, a complicated spiral winding process and assembling process were required, but according to the present invention, the cover can be wound very simply by setting it on the main body. The spring winding means has been realized. As a result, the productivity is improved because the equipment and technology that were required in the past are not required. Further, if the total length of the rack 81 is set so as to correspond to the number of windings where the torque necessary for the drive mechanism is generated, it is possible to easily tighten the predetermined number of windings when the cover 13 is closed. As a result, excessive stress due to over-tightening of the mainspring is not applied, and breakage and deformation of the mainspring can be prevented. Therefore, the durability of the mainspring is improved and the reliability of the mainspring drive mechanism is improved.

As a modification of the present embodiment, the mainspring mechanism module 2A having the structure shown in FIG. 5 can also be mounted on the mainspring drive mechanism. In this embodiment,
As shown in FIG. 2, the rotating shaft 22 is rotatably held in the center of the mainspring housing portion 24, and the mainspring housing portion 24 is attached to the main body 10.
5, the transmission means 22A is composed of the gear 21A and the mainspring housing portion 24A, the gear 21A is attached to the outer wall of the mainspring housing portion 24A, and the fixed shaft 22A is fixed to the fixing member 83, as shown in FIG. Fixed bearing 84
The mainspring 4 is engaged with the fixed shaft 22A, and the outer end is engaged with the inner wall of the mainspring housing portion 24A.
It is also possible to adopt a structure in which 4A is rotatable. Here, the gear 21A and the mainspring accommodating portion 24A may be integrally formed or may be separate bodies. Further, the mainspring housing portion 24A is provided with a rotary receiver 28 fixed to the fixed shaft 22A so as not to come off from the fixed shaft 22A.

Further, the mainspring mechanism module 2A
Can be fixed to the main body 10 by passing a screw, a bolt, or the like through the fixing hole 85 of the fixing member 83. Here, the fixing member 83 may be shared with the main body.

With this configuration, the mainspring mechanism module can be made smaller and thinner,
A thin spring opening / closing mechanism can be realized.

[Second Embodiment] FIG. 6 shows a second embodiment of the present invention.
1 illustrates an example of a portable electronic device 1A having a mainspring drive mechanism according to an embodiment.

In the first embodiment, the mechanism in which the input unit 11 and the display unit 12 appear when the cover 13 is opened and closed has been described. However, as in the present embodiment, the input unit 11 and the display unit 12 are directly connected to each other. It may be provided in the opened / closed portion and may have a structure that is pulled out from the inside of the main body 10.

In FIG. 6, the mainspring mechanism module 2 is incorporated in the cover 13A, and the rack 81A is attached to the main body 10A.
Is prepared. An external winding rack 65 can be connected to the tip of the rack 81A. Also the first
Similar to the embodiment, a mechanism is provided to prevent the cover 13A from coming off when it is pulled out.

Next, a winding method will be described. By engaging the cover 13A to which the mainspring mechanism module 2 is attached with the rack 81A of the main body 10A and pushing the cover 13A into the main body 10A, the mainspring can be wound into a predetermined number of turns. In this case as well, the length of the rack 81A can be set longer than the open / close section, but if the mainspring cannot be wound up to the number of turns at which the minimum set torque is generated with this length, by using the external winding rack 65 together, A predetermined number of turns can be obtained.

The external winding rack 65 is a rack 81 in the main body.
The length of the external winding rack 65 and the length of the rack 81A in the main body can be connected to A, and the length of the rack required for the number of windings at which the maximum set torque is generated. When attaching the cover 13A to the main body 10A, first, the main body 10
The rack 81A of A and the external winding rack 65 are connected, and the gear 21 of the mainspring mechanism module 2 attached to the cover 13A and the tip of the external winding rack 65 are engaged with each other. While sliding the cover 13A onto the outer winding rack 65 and the rack 81A inside the main body, the cover 13A is pushed in as it is. The mainspring can be wound up to a predetermined number of turns only by this operation.

In the third embodiment as described above, the same actions and effects as those of the first embodiment can be obtained, and the following effects can be added.

That is, in the mainspring drive mechanism, since the mainspring winding means is provided with the rack 81 and the external winding rack 65 connected to the rack 81, even when the initial winding number when the cover 13 is open is relatively large, By increasing the length of the external winding rack 65 connected to the outside, the preliminary winding amount can be increased. In other words, by adjusting the length of the external winding rack 65, it is possible to freely set the initial number of windings, and it is possible to provide a mainspring drive mechanism with a high degree of freedom.

Even if the preliminary winding rack cannot be secured on the mainspring drive mechanism side, by connecting the external winding rack 65 to the rack 81 of the mainspring drive mechanism, the initial winding number can be easily provided. It was

Further, conventionally, when the number of initial windings of the mainspring is large, the total number of windings when the cover 13 is closed is increased by that number of windings. Therefore, a large winding torque is required when performing full winding, and the winding device The tool was also a heavy burden. However, in the present invention, the rack 81 of the mainspring drive mechanism and the outer winding rack 65 are covered by the cover 13 and the main body 1.
Since 0 is moved relative to each other, it is possible to perform the tightening while distributing the tightening load, so that a large load is not applied during the tightening, and the tightening can be performed by a relatively simple mechanism.

[Third Embodiment] FIG. 7 shows a third embodiment of the present invention.
3 illustrates a mainspring mechanism module 2B according to an embodiment. The structure of the mainspring mechanism module 2B is similar to that of the first embodiment, and the energy stored in the mainspring 4A is transmitted to the gear 21 via the rotary shaft 22. In the present embodiment, the outer end of the mainspring 4A and the mainspring accommodation portion 24 are further added.
The number-of-winding control means 30 is provided between the B inner walls.

By providing the number-of-winding restricting means 30, even if the number of windings to be set is more than the desired number, the number of windings does not exceed the set number of windings.

The mainspring winding number regulating means 30 is a mainspring 4
This is achieved by utilizing the catching and friction between the rounding 31 and the curved portion 32 of the outer end portion of A and the mainspring holding groove 33 of the inner wall of the mainspring housing portion 24B. Specifically, a rounding 31 in which the outer end portion of the mainspring 4A is formed into a cylindrical shape, a curvature portion 32 in which the outer end thereof is formed into a curvature larger than the inner radius of the mainspring accommodation portion 24B, and an inner wall of the mainspring accommodation portion 24B are
A plurality of mainspring holding grooves 33 that engage with the rounding 31 at the outer end of the mainspring are provided. That is, when the rounding 31 of the mainspring 4A is caught by the plurality of mainspring holding grooves 33 provided on the inner wall of the mainspring housing portion 24B, it is slipped out when a certain force is applied, and the force at that time is set to the maximum set torque. By doing so, it is possible to easily realize the mainspring winding number regulating means 30.

FIG. 8 shows the torque curve of the mainspring used in this embodiment. It can be seen that even if the winding is tightened for A or more, the winding is not tightened for the maximum set torque or more, and the winding number regulating means 30 slips.

The winding number regulating means may be realized by attaching a slipping attachment used for a mechanical wristwatch or the like to the outer end of the mainspring.

In the third embodiment as described above, the same actions and effects as those of the first embodiment can be obtained, and the following effects can be added.

In this way, the rack to be closed can be closed by simply preparing a rack having a length that can be wound more than a predetermined number of turns without adjusting the length of the rack so that the predetermined number of turns can be obtained. , A predetermined number of turns can be obtained. In other words, even if the number of windings to be set is different, it is possible to tighten the windings using a common rack just by providing the winding mechanism mechanism with the winding number control means, and it is possible to cope with small-lot production of a wide variety of products. It is possible to provide a mainspring mechanism module that is cost effective.

Further, if the mainspring is over-tightened, an excessive load may be applied to the outer hook portion of the mainspring, causing breakage or deformation of the mainspring due to stress concentration. Excessiveness is eliminated and the durability of the mainspring can be improved.

As described above, the mainspring can be easily wound up to a predetermined number of turns, and the winding method of the mainspring mechanism module is generalized. Therefore, the reliability of the product equipped with the mainspring mechanism module of the present invention is improved. Also improves.

[Fourth Embodiment] FIG. 9 shows a fourth embodiment of the present invention.
3 illustrates a mainspring mechanism module 2 according to an embodiment. The structure of the mainspring mechanism module 2 is similar to that of the first embodiment, and the energy stored in the mainspring 4 is transferred to the rotary shaft 2
2 is transmitted to the output vehicle. In this embodiment, a damper braking means 70 connected via the rotary shaft 22 is further provided.

The damper braking means 70 is composed of a damper case 73 which is sufficiently filled with a fluid substance 75, a braking plate 72 immersed in the damper case 73, and a damper lid 71, and is mounted under the mainspring accommodating portion 24. . Rotating shaft 22
And the braking plate shaft 74 are engaged with each other, and when the rotating shaft 22 rotates, the braking plate 72 also rotates, and the braking plate 72 traverses the fluid substance 75 to generate a braking force.

A high-viscosity fluid substance 75 such as silicone oil is immersed in the damper case 73, and the force generated by the brake plate 72 crossing the fluid substance 75 is used to change the rotational speed. Has gained a braking force. Here, as the fluid substance 75, in addition to silicone oil,
A high-viscosity viscous fluid or gas can be used. Further, in the damper case 73, in addition to the fluid substance,
A braking force using an electromagnetic brake or a wind turbine whose speed is increased may be used.

Next, the operation when the mainspring mechanism module of this embodiment is incorporated in FIG. 1 will be described. Cover 1
When 3 is closed, rotational energy is transmitted to the rotary shaft 22 via the rack 81 and the gear 21. The rotational energy is transmitted to and accumulated in the mainspring 4, and at the same time, transmitted to the braking plate 72, which becomes a load when the cover 13 is closed. On the other hand, when the cover 13 is opened, the energy of the mainspring 4 is transmitted to the rotary shaft 22, and at the same time, the braking force is generated from the damper braking means 70 according to the opening speed. As a result, the cover 13 opens smoothly at a constant speed.

Here, the damper braking means 13 does not necessarily have to be arranged below the mainspring storage portion 24. If it can be handled as a single unit, it may be on the mainspring storage portion 24 or may be arranged so as not to overlap in a plane. Further, the braking plate 72 and the braking plate shaft 74 may have an integrated structure. In this fourth embodiment as well, the same actions and effects as those of the first embodiment can be obtained, and the following effects can be obtained. Can be added.

Conventionally, when the drive mechanism is opened, it depends only on the power of the mainspring, so the speed at which the drive mechanism is opened is the speed at which the mainspring is rewound, and the speed is large. By using the damper braking means together as in the present invention, it becomes possible to realize a smooth movement, and particularly when it is used for a cover or a lid of a small electronic device or the like, a high-grade feeling is added to the device body. Value can be added.

However, in order to realize a smooth movement, it was necessary to strictly manage the number of turns of the mainspring. For example, if the opening / closing distance AB of the cover shown in FIG. 1 is 4 cm, the speed at which the cover looks smooth for about 0.3 seconds,
If it's 0.1 seconds earlier than this, it doesn't seem to open and close smoothly. If 0.1 second is late, it is too late this time to give the user an unpleasant feeling. Thus, by mounting the damper braking means 70, strict winding number control of the mainspring was required. However, according to this embodiment,
The relative movement of the drive mechanism and the main body enables the winding to be tightened in the assembled state, so that an accurate number of turns can be easily given and fine adjustment is possible, and a higher quality drive mechanism can be provided.

Further, the load applied to the drive mechanism by the repeated rapid drive operation is reduced, and the durability can be improved. In addition, if the power of the mainspring is extremely large, there is a possibility that a finger or the like may be caught between the drive mechanism and the main body, which could injure the user, but the damper braking means enabled smooth drive. So it can be prevented.

[Fifth Embodiment] FIGS. 10 and 11 show devices 1 and 1A incorporating a mainspring mechanism module 2 according to a sixth embodiment of the present invention.

FIG. 10 shows a cover 13 that includes the input unit 11, the display unit 12, and the processing unit that does not display, and covers the input unit 11.
1 shows a portable electronic device 1 configured from.
The cover 13 is manually slid to cover the input unit 11, and by pressing a switch or the like, the cover 13 is opened by the power of the mainspring, and the state shown in the drawing is obtained.
Here, the display unit 12 may be covered by the cover 13. Further, the cover 13 may be equipped with an input unit, a display unit, and the like.

FIG. 11 shows the portable electronic device 1 in which the cover 13A on which the input section 11A is mounted pops out from the main body 10A. By manually sliding the cover 13A, the cover 13A fits inside the main body 10A, and by pressing a switch or the like, the cover 13A pops out of the main body 10A by the force of the mainspring, and the state shown in the drawing is obtained. Further, not only the input section, but also the display section, the camera, etc. may pop out. Moreover, an input unit or the like may be mounted on the main body.

Also in the fifth embodiment as described above, the same operation and effect as those of the first embodiment can be added.

At present, portable electronic devices are required to be multifunctional and miniaturized. Along with that, it was necessary to sacrifice operability in order to mount many functions in a small space. In order to realize this, a drive mechanism is often used, but since the installation space is small and the device body itself is small, the drive mechanism cannot be easily installed.

When incorporating the drive mechanism into a small device,
A motor has been widely used as a driving power source. In the case of a motor, although it is easy to install, it is required to reduce the size and power consumption, and a power source that does not require electrical energy like the mainspring mechanism module in the present invention is required.

However, in consideration of the assembling property, the conventional mainspring drive mechanism needs to have an assembling process in consideration of the winding and tightening process. In the present invention, the winding process of the mainspring mechanism module, which is difficult to handle as a process for a small device, is performed by the relative movement of the drive mechanism and the main body, thereby improving workability and improving the assembling property. Therefore, the mainspring mechanism module can be incorporated in the same manner as the motor, and the assembling property is improved. Moreover, by mounting the mainspring drive mechanism that is excellent in terms of energy, it becomes possible to provide equipment with extremely high commercial value. Further, even when a strict torque control is required as in the case of a motor, fine adjustment can be performed after the assembly, so that it is possible to provide a device with high performance. In addition, since the operation of starting the operation is automatically performed by the power of the mainspring, it is possible to improve the operability of the device and also improve the merchantability.

Further, the mainspring mechanism module may be mounted on a device which is not electronically controlled, such as a toy.

Further, as the shape of the mainspring, a spiral spring may be used, or a contact type constant torque mainspring may be used. The thickness and width of the mainspring may be not only uniform over the entire length but also continuously changing.

[0113]

As described above, according to the present invention,
By providing the mainspring winding means by the relative movement of the drive mechanism and the main body, it is possible to realize a structure in which a predetermined number of windings and torque can be easily and surely obtained while assembling even without managing the number of winding windings. it can.

[Brief description of drawings]

FIG. 1 is a perspective view showing a portable electronic device equipped with a drive mechanism according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of the mainspring mechanism module of the first embodiment.

FIG. 3 shows a typical mainspring torque curve.

FIG. 4 is a perspective view showing a mainspring winding means of the first embodiment.

FIG. 5 is a perspective view showing a modified example of the mainspring mechanism module of the first embodiment.

FIG. 6 is a perspective view showing a portable electronic device equipped with a drive mechanism according to a second embodiment of the present invention.

FIG. 7 is a perspective view showing a modified example of the mainspring mechanism module according to the third embodiment of the present invention.

FIG. 8 shows a torque curve of the third embodiment.

FIG. 9 is a perspective view showing a fourth embodiment of the present invention.

FIG. 10 is a perspective view of a portable electronic device equipped with a mainspring mechanism module according to a sixth embodiment of the present invention.

FIG. 11 is a perspective view of a portable electronic device equipped with a mainspring mechanism module according to a sixth embodiment of the present invention.

[Explanation of symbols]

1,1A Portable electronic device 2, 2A, 2B Spring mechanism module 3,3A drive mechanism 4,4A Mainspring 5 Communication means 10,10A main body 11 Input section 12 Display 13,13A cover 14 Stopper 15 switch 21,21A gear 22 rotation axis 22A fixed shaft 23 Top cover 24, 24A, 24B Mainspring accommodation section 25 Bearing 26 Inner hanging part 28 rotation receiving 30 Number of turns regulation means 31 rounding 32 curvature 33 Mainspring holding groove 60,60A Spring winding means 61 Stop Claw 62 nail receiver 63 Spare winding rack 64 rack connection 65 External winding rack 70 Damper braking means 71 damper lid 72 Brake plate 73 damper case 74 Brake plate axis 75 Liquid matter 81, 81A rack 83 Fixing member

Claims (7)

[Claims] 1. A mainspring mechanism module including a mainspring for accumulating mechanical energy, a mainspring accommodating portion for accommodating the mainspring, and a transmission means for exchanging mechanical energy between the mainspring and the drive mechanism, and a drive mechanism. A mainspring drive mechanism, comprising: the transmission mechanism, or an output wheel engaged with the transmission unit, and a mainspring winding mechanism by relative movement of a drive mechanism. 2. The mainspring drive mechanism according to claim 1, wherein the mainspring tightening means comprises a gear and a rack. 3. The mainspring drive mechanism according to claim 1 or 2, wherein the mainspring winding means includes a rack having a length equal to or longer than a working distance of the drive mechanism. 4. The mainspring drive mechanism according to claim 1, wherein the mainspring winding means includes an external winding rack connected to the rack. mechanism. 5. A mainspring drive mechanism according to claim 1, further comprising a mainspring winding number regulating means. 6. A mainspring drive mechanism according to any one of claims 1 to 5, further comprising damper braking means. 7. An apparatus using the mainspring drive mechanism according to any one of claims 1 to 6.