JP2002195148A - Power spring mechanism and equipment therewith - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce manufacturing costs with a simple structure without increasing the number of part items and to thin a power spring mechanism. SOLUTION: A drive force storing part formed by a power spring 11 and a damping part (a part generating a damping force) containing a damping vane part 12c and fluid material 15 contacting it are arranged in different positions not essentially flatly overlapping in an axial direction of the power spring. Thereby the power spring mechanism can be thinned for compactly containing the power spring mechanism when applied for equipment such as an automatic feeding mechanism incorporating the power spring mechanism.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to relates to a mainspring mechanism and apparatus including the same, an automatic feeding mechanism of the lid or housing part, on the structure of a preferred drive mechanism as retractable mechanism, and the like.

[0002]

2. Description of the Related Art Generally, a small mainspring mechanism is used in various fields as a driving source for obtaining driving force of various articles. Usually, a spiral spring, which is called a barrel, accommodates a spiral spring, and a rotary shaft connected to the inner end of the spring is supported at the center of the spiral case. In this case, there is a case where only the rotating shaft is used as the sole driving force extracting unit. For example, one of the rotating shaft and the mainspring case is used as the input shaft, and the other is used as the output shaft.

In the above-described mainspring mechanism, the driving force obtained after the mainspring is tightened generally increases or decreases in accordance with the degree of tightening of the mainspring. The driving speed changes according to the degree of tightening. Therefore, Japanese Patent Publication No. 54-31146
As described in the publication, a brake plate rotatably housed in a brake case filled with a fluid substance such as liquid or powder is connected to one end of the spring, and the brake plate is actuated by the braking action of the brake plate. In some cases, a structure (governing mechanism) is provided to reduce fluctuations in driving force and reduce changes in driving force or driving speed.

There is also known an improved mainspring mechanism in which the structure of the mainspring mechanism is simplified and a structure capable of reducing the number of parts is employed, thereby reducing the size and the manufacturing cost.

[0005]

However, in the above-mentioned mainspring mechanism having the braking action, the mainspring has the following features.
Although it has a structure including a mainspring case, a rotating member, a brake plate, and a brake case, since the individual components are arranged so as to overlap in a plane, the thickness direction may increase.

[0006] The present invention has been made to solve the above problems, by the problem, to employ a configuration to place the braking unit to provide a braking force and driving force accumulating portion at different positions in plan view, the mainspring It is to reduce the thickness of without losing compactness of the mechanism.

[0007]

Mainspring mechanism of the present invention to solve the above object, according to an aspect of the mainspring for accumulating a restoring force tightened up by the seaming force, and, outside of the mainspring accommodates the mainspring A driving force accumulating unit having a mainspring housing connected to an end, a center member connected to an inner end of the mainspring, and braking for applying a braking force to relative movement between the mainspring housing and the center member Department and
Wherein the driving force accumulating portion and the braking portion are arranged so as not to substantially overlap with each other when viewed in the axial direction of the mainspring.

According to the present invention, the driving force accumulating portion and the braking portion are arranged at positions where they do not overlap in a plan view when viewed in the axial direction of the mainspring, so that they can be overlapped in the thickness direction. The mainspring mechanism can be made thinner. Further, when there is a malfunction in either the braking portion and the driving force storage unit, without separating them, or, without disassembling the other, it can be configured to allow repair. Further, it may be configured such that individual fine adjustments can be made without separating the two or disassembling the other.

Here, the term "substantially non-overlapping" means that the substantial constituent region of the driving force accumulating portion (ie, the region where the driving force is substantially accumulated) and the substantial constituent region of the braking portion (ie, substantially the same). (A region where a braking force is generated in a practical manner) means that they are not overlapped with each other. Of course, it is more desirable that the driving force accumulating unit and the braking unit are physically configured so as not to overlap each other at all.

Further, as the brake unit, it can be used to obtain a braking force by the flow resistance of the flow material, such as gas or liquid. In this case, for example, it can constitute a braking unit and is rotatable in the braking member by the fluid mass in contact with the braking body. Also, by providing blades on the braking body, rotational resistance due to gas is generated,
The rotation resistance due to this gas can be used as a braking force. Here, a flow material other than gas may be brought into contact with the brake body, and the flow resistance of the flow material may be used as a part of the braking force. Thereby, braking by gas resistance and braking by a fluid substance other than gas can be combined. In this case, by arranging the fluid substance other than the gas only in a part of the space around the brake, the braking force can be easily adjusted by increasing or decreasing the amount of the fluid substance. Further, a device that obtains a braking force by electromagnetic induction may be used. In this case, for example, a brake body configured to be rotatable and a facing member facing the brake body are provided, and electromagnetic induction is generated between the brake body and the opposed member (for example, the brake body A permanent magnet is disposed on one of the opposed members and a coil is disposed on the other, and a braking unit can be configured by connecting an electric load against the induced electromotive force.

The spring includes a conston spring and a coil spring which are used in a manner to take in and out energy with a change in the tightening state. The connection between the mainspring and the mainspring receiving portion and the center member may be in any mode such as pressure welding, hooking, welding, and the like.

In the present invention, it is preferable that the braking section is disposed along an outer periphery of the driving force accumulating section.

According to the present invention, by the braking portion is disposed along the outer periphery of the drive force accumulating portion, since the working distance and the braking area of the braking portion can be easily increased,
The braking effect can be enhanced without increasing the size of the mechanism. Also, for example, when the braking unit includes a rotating braking body and a stationary opposing member (a braking case or the like) facing the rotating braking body, the braking body is connected to the driving force accumulation unit in a rotational direction, and Is arranged further outside of the braking body, when the counter member is used in a fixed state such as by attaching it to another member, the fixing operation is facilitated because the counter member is disposed on the outermost periphery.

In the present invention, it is preferable that the braking section has a braking body that receives the braking force, and the braking body is provided on an outer peripheral portion of the driving force accumulation section.

According to the present invention, since the braking member is provided on the outer peripheral portion of the driving force accumulating portion, it is not necessary to form the braking member as a separate member, so that the number of components can be reduced. Further, since the diameter of the braking body can be increased, the braking distance and the braking area can be easily increased, so that a high braking force can be obtained.

In the present invention, it is preferable that the driving force accumulating portion is sealed. Since the driving force accumulation unit is sealed, it is possible to prevent dust and the like from entering the driving force accumulation unit. In addition, when high-viscosity grease is applied to the mainspring, the grease can be prevented from leaking. Here, as a more specific structure of the driving force accumulating portion, it is desirable to adopt a structure in which the spring is sealed by attaching a lid to the opening of the spring housing portion.

In the present invention, it is preferable that output means for outputting the driving force of the mainspring is connected to the driving force accumulating portion or the central member.

According to this invention, it is possible to open or close the structure or the movable unit to directly or indirectly driven via the output means. Here, the output means is connected to the driving force accumulating portion or the central member, when the output means is mechanically attached to the driving force accumulating portion or the central member, and when the output means is connected to the driving force accumulating portion or the central member. It includes both the case being integrally formed with the component or the central member constituting.

In the present invention, it is preferable that the braking section is disposed inside the driving force accumulating section.

According to the invention, by the braking unit on the inner side of the driving force storage portion is disposed, from to complete assembling the brake earlier, connect the driving force storage unit or the driving force storage unit Can be assembled so that the assembling work can be facilitated. Further, the driving force accumulating section can be easily disassembled, and maintenance and replacement of the driving force accumulating section can be performed independently of the braking section. Here, when the center member is fixed by attaching it to another member or the like, and the spring receiving portion of the driving force accumulating portion is rotated to output the driving force, the braking portion is arranged inside the driving force accumulating portion. Therefore, the structure and position for taking out the driving force are not restricted by the braking unit. However, it is also possible to configured to retrieve the output from the central member.

In the present invention, it is preferable that the braking portion is disposed inside the center member.

According to the present invention, since the braking portion is disposed inside the central member, the positioning of the braking portion and the shaft support structure can be integrally formed with the central member, so that the entire structure can be made compact. In addition to this, assemblability can be improved, for example, the center member in which the braking unit is incorporated can be completed in advance. In addition, the tightness of the braking portion can be easily obtained.

In the present invention, it is preferable that a slip means is provided in a rotation transmission path from the mainspring to the braking portion.

According to the present invention, when an excessive stress is applied from the outside or when the braking force of the braking section becomes excessive due to a temperature change or the like, the slipping means slips, so that the braking section and the driving force accumulate. Damage or destruction of the part can be prevented.

In the present invention, the braking portion has a braking body that receives the braking force, and a fluid material that contacts the braking body, and a slip surface of the slip unit is disposed in the fluid material. Is preferred.

According to the present invention, the slip state can be stabilized by the lubricating effect and the cooling effect of the fluid material by disposing the slip surface of the slip means in the fluid material.

In the present invention, it is preferable that a rotation intermittent means for intermittently transmitting the rotation from the mainspring to the braking portion is provided.

According to the present invention, it is possible to appropriately apply or remove the braking force by the rotation intermittent means, so that the application characteristics of the braking force can be appropriately adjusted according to the use of the mainspring mechanism. Can be set.

In the present invention, the rotation interrupting means interrupts rotation transmission when the driving force accumulating section accumulates driving force, and transmits rotation when the driving force accumulating section releases driving force. it is preferably configured so.

According to the present invention, when excessive stress is applied from the outside or when the braking force of the braking section becomes excessive due to a temperature change or the like, the rotation is interrupted by the rotation interrupting means so that the braking is stopped. This can prevent damage and destruction of the drive unit and the driving force storage unit.

Next, a device according to the present invention includes the mainspring mechanism described above, and an opening / closing unit driven to open / close by the mainspring mechanism.

Devices having an opening and closing portion driven to open and close by a mainspring mechanism include devices having a lid that opens and closes by rotating around a hinge axis (a rotary opening and closing structure such as a rice cooker and a foldable electronic device). And a device having a portion that can be opened and closed by a sliding operation (a device having a sliding-type opening / closing structure such as a vehicle-mounted drawer opening / closing mechanism and a direct-acting retractable monitor). In these devices, the opening and closing operation can be performed at a controlled speed, and the sense of quality and quietness of the operation can be improved.

According to another aspect of the present invention, there is provided a device having the mainspring mechanism described above and a movable portion driven by the mainspring mechanism.

Such a device is not limited to the device having the opening / closing structure as described above, but may be any device having a movable portion such as a movable toy.

[0035]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a mainspring mechanism according to the present invention.

[First Embodiment] FIG. 1 is a sectional view of a first embodiment according to the present invention, and FIG. 2 shows a state of a mainspring set in a mainspring case (coffee box) in the first embodiment. FIG. 3 is a cross-sectional view showing a state in which the mainspring mechanism of the first embodiment is incorporated in the equipment, and FIG. 4 is a plan view thereof.

[0037] In this embodiment, the shaft-like winding core 10 constituting the central member, the mainspring of the winding core 10 mounting portion 10a
A spiral spring 11 having a square hole-shaped inner end mounting portion 11a connected thereto, a barrel 12 and a barrel lid 13 constituting a spring case accommodating the spring 11 are provided. Barrel 1
The barrel 2 and the barrel cover 13 are configured to rotate integrally and support the core 10, and the mainspring 11 is sealed by the barrel 12 and the barrel cover 13. Also,
The outer end 11b of the mainspring 11 is engaged with a notch 12a provided on the inner periphery of the barrel 12, and its rotation is restricted. further,
The core 10 includes a central hole 12 b of the barrel 12 and a barrel lid 13.
Are rotatably supported by the central hole 13a. The engagement portion 10b of the core 10 and the engagement hole 14a of the brake case 14 are press-fitted and fixed in a state where rotation is restricted.

At the lower end of the barrel 12, a dish-shaped braking case 14 is provided from below, on the outer periphery of the barrel 12.
It protrudes so as to enclose c. A space 15 d between the barrel bottom 12 d of the barrel 12 and the housing recess 14 b of the brake case 14 is filled with a fluid substance 15 such as oil. Braking wing portion 12c and the barrel bottom 12d of the barrel 12, when rotated in a flow material 15, the braking wing portion 12c, the barrel bottom 12
It is configured to receive a predetermined rotation resistance due to the flow (viscosity) resistance between the fluid and the solid between d and the accommodation recess 14b of the braking case 14 and the fluid substance 15. Fluid substance 1
5 is filled in the space formed by the braking case 14, the barrel bottom 12d, and the braking case lid 16.
Further, a lid press-fitting portion 14c
And the brake case lid 16 is press-fitted and fixed in the fitted state. In addition, by providing a plurality of opening holes (not shown) and a tooth shape over the entire circumference in the brake wing portion 12c of the barrel 12, the brake wing portion 12c
5 and the braking wing 1 of the barrel 12
It is easily conceivable to adopt a configuration in which the rotational resistance generated between 2c and the fluid substance 15 is increased.

The braking case lid 16 has the braking wing 1 of the barrel.
An opening 16a is provided so that the gap with 2c gradually increases toward the inside. As a result, the fluid substance 15 stays in the gap formed between the brake wing portion 12c of the barrel 12 and the brake case lid 16 due to the surface tension, and the fluid substance 15 is placed at the opening 16a of the brake case lid 16. The interface is arranged so that the fluid substance 15 does not leak out of the brake case lid 16.

An upper slot 12e is provided inside the barrel bottom 12d of the barrel 12, and the lower slot 14 is formed in the braking case 14.
By providing d, a surface tension similar to the above is generated, and the fluid substance 15 is configured not to move toward the center. Thereby, invasion of the fluid substance 15 into the barrel 12 can be prevented.

The barrel lid 13 has a central projection 1 extending to the center.
3b, and the central projection 13b has a gear 1
7 (driving force transmitting means) is fixed in a state where the rotation is restricted. A rotation operation groove 13c engageable with a tool such as a flathead screwdriver is provided at the upper end of the central projection 13b.
Are formed.

In this embodiment, the mainspring 11 is rotated by rotating the core 10 and the barrel 12 relatively.
Can be tightened. The wound spring 11 accumulates rotational energy, and when one of the core 10 and the barrel 12 is released, the released member rotates in the direction opposite to the direction of winding. At this time, together with this rotation operation, the brake case 14 and the barrel 12 that are joined in the rotational direction to the core 10 rotate relatively, so that the brake case 14, the brake case lid 16, and the barrel 12 are rotated.
Rotational resistance is generated through the flow material 15 between. This rotation resistance usually increases monotonically with the rotation speed, and thus acts to suppress fluctuations in the rotation speed.

The braking case 14 is formed in a shape dish with edge,
It has a structure in which the outer peripheral portion rises axially, the outer peripheral portion is configured to fit braking case lid 16. After filling the brake case 14 with the flowable substance 15 along the outer periphery of the dish-shaped shape, the braking wing 12
The barrel 12 is assembled in such a manner that the barrel 12 is rotatably engaged with the winding core 10 so that c is disposed in the outer peripheral portion of the braking case 14. At the time of this assembling, the fluid substance 15 is easily filled by the dish-like shape of the brake case 14, and the fluid substance 15 is hard to leak due to the shapes of the upper long groove 12 e and the lower long groove 14 d and the brake case lid 16. It has a structure.

As described above, the provision of the opening 16a of the brake case lid 16 provides a structure in which the fluid substance 15 does not easily leak, so that a sealing member such as a packing or a complicated structure for sealing is not required. Therefore, it is possible to suppress unnecessary rotation resistance (a resistance component having no effect of suppressing the fluctuation of the rotation speed), and to simplify the structure.

The core 10, the mainspring 11, and the barrel 1
The main part of the mainspring mechanism consisting of two
It is preferred that a slipping attachment for preventing the winding excessively 1 is incorporated. This slipping attachment has a structure in which a curved spring different from the mainspring is provided at the outer end, and the mainspring 11 and the barrel 12 are connected in the rotational direction by a radial frictional force of the spring with respect to the barrel 12. Usually, the outer end position of the mainspring 11 is fixed because the spring is engaged with the inner peripheral surface of the barrel 12 by the frictional force. In this case, the notch 12a is not provided on the inner peripheral surface of the barrel 12. Further, when a load equal to or more than the frictional force is applied, the spring slips, and it is possible to prevent a phenomenon such as breakage of the mainspring and settling due to excessive tightening of the mainspring.

In the present embodiment, the driving force accumulating portion including the barrel 12 and the braking portion including the braking wing portion 12c are arranged at different positions so as not to overlap each other in plan view. The overall structure can be made compact. Further, the above structure enables a very simple structure with a minimum number of parts without providing fine parts or complicated structures, thereby reducing parts costs and assembly costs and reducing manufacturing costs. can do.

This embodiment has a structure suitable for fixing the braking case 14 and using the gear 17 as an input / output shaft. For example, FIG. 3 shows an assembly cross-sectional view of a state in which the mainspring mechanism of the first embodiment is incorporated in equipment, and FIG.
Is a plan view thereof. The brake case 14 of the mainspring mechanism 21 according to the present embodiment is configured to be stored in a state where rotation thereof is restricted by a storage portion 23 formed inside the plate member 22. The case cover 24 is configured to enter the plate 22 in such a state that press the upper portion of the brake housing lid 16 of the mainspring mechanism 21. The case lid 24 is fixed to the plate 22 by a set screw 25, and the spring mechanism 21 of the spring mechanism 21 is sandwiched between the housing 23 of the plate 22 and the case lid 24.
6 is fixed. As can be seen from this figure, it is easy in the present embodiment to make only the gear 17 protrude outside when incorporated in another member or device, so that it can be stored compactly and the space can be saved. It is easy to adopt a form that does not waste.

[0048] [Second Embodiment] The following describes a second embodiment of the mainspring mechanism according to the present invention with reference to FIG. In this embodiment, the core 30, the mainspring 31, the barrel cover 33, and the gear 37, which are the same as those in the first embodiment, are provided, and thus description thereof will be omitted.

The present embodiment has substantially the same members as the first embodiment, except that the upper part of the braking wing portion 32c of the barrel 32 has a slightly raised outer peripheral portion and a groove-shaped inner peripheral portion. It has a packing housing portion 32f. Upper packing accommodating portion 32f has a easily fit the ring-like packing 38 structure. The packing 38 is provided on the braking wing 3
It is arranged in a compressed state between 2c and the brake case lid 36. In this embodiment, the packing 38 prevents the fluid substance 15 from leaking from the gap of the brake case lid 36. Therefore, a portion corresponding to the opening 16a of the brake case lid 16 of the first embodiment is not provided.

In this embodiment, the packing 38 is
Since it is arranged outside the thick main body portion of the barrel 32 and is arranged so as not to be related to the thickness of the main body of the mainspring mechanism, it is easy to reduce the thickness and to have a structure which does not lose compactness. I have.

The present embodiment has a structure intended for use when the conditions are very severe (for example, when the viscosity of the fluid substance 35 is high or when the temperature conditions change abnormally). The inside of the braking case 34 is completely sealed.

[Third Embodiment] Next, a third embodiment of the mainspring mechanism according to the present invention will be described with reference to FIG. In this embodiment, a winding core 40, a mainspring 41 and a fluid material 45 similar to those of the first and second embodiments are used.
And a barrel 42 and a brake case 4 similar to those of the second embodiment.
4, because it has a braking case lid 46 and the packing 48, the description thereof is omitted.

In the present embodiment, the barrel 41 is attached to the barrel 42 in the same manner as in the second embodiment in a state in which the spring 41 is housed, and the spring 41 is sealed.
A barrel cover 43, unlike the above barrel cover 13 and 33, the outer peripheral portion is formed in shape flange protruding outwardly from the outer edge of the barrel 42, the outer peripheral gear portion 43d having a tooth die to the outer peripheral portion is formed Have been. The upper end of the barrel cover 43 (i.e., the central hole portion 43b for accommodating the core 40 in the illustrated embodiment
A rotation operation groove 43c having the same function as in the first embodiment is formed in the opening edge of the first embodiment.

In the present embodiment, as described above, the barrel cover 43 also serves as an output means, and more specifically, the output means is provided on the outer periphery of the barrel cover 43.
Since it can be made thinner, it can be used in a small space.

In the present embodiment, the structure is provided with the packing 48 as in the second embodiment, but it is also possible to adopt a packingless structure as in the first embodiment.

This embodiment is suitable for fixing and using the brake case 44 to other members, devices, or the like, similarly to the assembled state of the first embodiment shown in FIGS. Further, the invention is not limited to this. For example, if the same as the outer peripheral gear portion 43d formed on the outer periphery of the barrel cover 43 is formed on the outer periphery of the braking case 44, the barrel 3
How to use in a state where 2 was fixed also easily conceivable.

[Fourth Embodiment] Next, a fourth embodiment of the mainspring mechanism according to the present invention will be described with reference to FIG. In this embodiment, the inner end 51a of the mainspring 51 is connected to the inner end mounting portion 50a of the core 50, and the outer end 51b of the mainspring 51 is rotationally engaged with the notch 52a of the barrel 52. This is similar to the above-described embodiments.

In the above-described embodiment, the braking portion composed of the braking wings and the like is provided outside the mainspring of the driving force accumulating portion. In the present embodiment, however, the braking portion is provided with the driving force accumulating portion. Of the mainspring 51.

[0059] In this embodiment, the braking member 56 is rotatably fitted in a shaft hole 50b provided inside the winding core 50, the braking case 54 is press-fitted into the lower portion of the core 50. In a braking space defined by the winding core 50 and the braking case 54, a braking wing portion 56a of the braking body 56 is disposed. Here, a packing 58 is disposed between the braking case 54 and the braking body 56, and seals the fluid substance 55 accommodated in the braking space. Of course, by adopting a configuration similar to that of the first embodiment, a packingless structure can be easily achieved. The core 50 and the braking body 56 are configured to rotate relative to each other to generate rotational resistance due to viscosity.

The lower end 56a of the brake 56 and the spring 1
The center hole portion 52b of the barrel 52 which accommodates the 1 are fixed in a state of being prevented from rotating. A barrel cover 53 is press-fitted and fixed to the outer peripheral upper end 52c of the barrel 52. A barrel cover 53, projecting inwardly to the extent that the mainspring 51 is not protruded outside, there is a central hole 53a is formed.

The core 50 is provided with a central projection 50c, and a gear 57 is fixed to the central projection 50c in a state where rotation is restricted. A rotation operation groove 50d engageable with a tool such as a flathead screwdriver is formed at the upper end of the central projection 50c.

In the present embodiment, unlike the first embodiment, the mainspring 51 of the driving force accumulating portion is present on the outer periphery of the braking portion, and is different in a plane (not overlapping) when viewed in the axial direction of the mainspring. Characterized in that it exists in
Thereby, it is easy to reduce the thickness, and a compact configuration can be obtained.

In the present embodiment, similarly to the first embodiment, it is easy to mount only the gear 57 so that only the gear 57 protrudes outside, so that it can be stored compactly.
It is possible to adopt a form that does not waste space.
In the present embodiment, the structure such as embodiments using a state of fixing the barrel 52 is effective is employed.

[Fifth Embodiment] Next, a fifth embodiment of the mainspring mechanism according to the present invention will be described with reference to FIG. In this embodiment, the winding core 60, the mainspring 61, the barrel 62, and the braking case 6 are substantially the same as in the fourth embodiment.
4, the fluid substance 65 and the damping body 66 are provided, and the description thereof will be omitted.

In the present embodiment, a central projection 63b projecting upward is formed at the upper end of the barrel cover 63, and the gear 67 is fixed to the central projection 63b in a state where rotation is restricted. Further, the central projection 60 c of the core 60 is not pivotally supported by the barrel cover 63, but projects further upward than the upper surface of the gear 67, and
Is positioned and fixed in a state where it is regulated in the rotation direction.

In the present embodiment, since the central projection 60 c formed at the upper end of the core 60 is supported and fixed in a state where it is regulated in the rotation direction by the support member 69, the barrel 62 is driven by the driving force of the mainspring 61. , Barrel barrel 63, gear 67 and the like are rotatably driven.

The central projection 63b and the gear 67 of the barrel cover 63 having the above structure are eliminated, and instead, the barrel 62 is replaced.
It is also possible to provide a portion that protrudes in a flange shape on the outer periphery of the device and to form a tooth pattern at this portion.
As a result, it is possible to further reduce the thickness, reduce the number of parts, and achieve a simpler configuration.

This embodiment is different from the fourth embodiment,
The output structure for outputting the driving force of the mainspring 61 is
And a member to which the outer end of the mainspring 61 is connected, such as a barrel lid 63 and the like. Thereby, the selectivity of the jig to be fixed is widened, and the fixing method can be simplified.

[Sixth Embodiment] Next, referring to FIG.
A sixth embodiment of the mainspring mechanism according to the present invention will be described. In this embodiment, a core 70, a mainspring 71, a barrel 72, a barrel lid 73, a brake case 74, a fluid substance 75, a brake case lid 76, and a gear 77 are basically similar to the first embodiment shown in FIG. Therefore, the description of the same parts will be omitted.

In this embodiment, as shown in FIG. 9, the barrel 72 includes an outer case 72A and a bottom case 72A.
B are mutually fitted at the fitting part 72x. The barrel 72 is normally the outer peripheral casing portion 72A and the bottom case portion 72B at a predetermined static friction force of the fitting portion 72x is configured to rotate integrally, the stress exceeding the static frictional force therebetween When it is interposed, the fitting portion 72x slips, and the rotation transmission between them is interrupted.

With the above configuration, in the present embodiment, for example, when the mainspring 71 is wound around by the rotational force applied to the barrel cover 73 and the gear 77, if the rotational force becomes excessive, the fitting portion 72
x slips, although the outer peripheral casing portion 72A tighten winding the mainspring 71 is rotated, the bottom casing section 72B is not rotated, as a result, the braking wing portion 72c also does not rotate, the flow and the braking wing portion 72c material 75 There is also no braking force based on the rolling resistance between. Therefore, it is possible to prevent damage or destruction due to a large load applied to the driving force accumulating portion or the braking portion due to excessive external stress. Further, with the above-described configuration, it is possible to prevent the viscosity of the fluid substance 75 from increasing due to, for example, a decrease in temperature, and as a result, a braking force becoming too large and a large load being applied to the driving force accumulation unit and the braking unit.

In the above embodiment, the fitting portion 72x serving as a slip portion is provided at a portion not in contact with the flowable material 75, but the fitting portion 72x is provided at a portion in contact with the flowable material 75, for example, a braking blade portion. including the root portion of the 72c, provided by the slip surface is configured to be positioned in the flow material 75, slip surface is lubricated by the fluid mass 75, even when the temperature of the slip surface is increased by the frictional force flow Since cooling is performed by the substance 75, slipping occurs more smoothly, and the slipping state can be stabilized.

Although the present embodiment is characterized in that the slip means having the fitting portion 72x as the slip portion is provided as described above, the same slip means can be applied to other embodiments. For example, it has the same structure as the fourth embodiment shown in FIG.
And the lower end portion 56b of the braking body 56 is not restricted in the rotational direction, and the two are fitted so as to be able to slip in the rotational direction.

In this case, during normal operation, since the barrel 52 and the brake body 56 are integrated by the static frictional force of the fitting portion, when the brake body 56 and the core 50 rotate relatively, the brake body resistance occurs via a flow material 55 between the 56 inner surface of the brake wing portion 56a and the core 50 of the braking force is generated. However, when an excessive stress is applied from the outside, or when a braking unit that generates a braking force using the viscous resistance of the fluid material is provided, the temperature of the fluid material decreases due to a decrease in the environmental temperature. If the braking force becomes excessive due to the increase in viscosity, the barrel 52 and the braking body 56 slip with each other, so that no braking force is generated. Therefore, for example, it is possible to prevent damage or destruction of the braking portion or the winding core, which may occur when an excessive stress is applied to the gear 57 or the winding core 50 from the outside or the braking force becomes excessive due to a temperature drop or the like. it can.

[Seventh Embodiment] Next, FIG. 10 and FIG.
The seventh embodiment according to the present invention will be described with reference to FIG. This embodiment is similar to the fifth embodiment, the core 8
0, the mainspring 81, the barrel cover 83, the braking case 84, the fluid substance 85, the gear 87, and the packing 88, the description thereof will be omitted.

In this embodiment, as shown in FIG. 10, a projecting shaft 82b projecting upward is provided at the center of the bottom of the barrel 82, and the lower end of the brake 86 is provided with the projecting shaft 82b. A protruding frame portion 86b disposed around is provided. Clutch spring 160 is attached to the protruding shaft portion 82b, the tip of the clutch spring 160 is protruded frame portion 86
b.

[0077] Figure 11 is a cross-sectional view showing the structure of the engaging portion of the braking body 86 and the barrel 82. Projection shaft 82b
The inner end portion 161 of the clutch spring 160 is inserted and fixed to. The clutch spring 160 is bent from the inner end 161 and has a curved portion 162 surrounding the outer periphery of the protruding shaft portion 82b.
The outer end 16 protrudes from the curved portion 162 so as to be able to engage with the protruding frame portion 86b apart from the protruding shaft portion 82b.
3 are provided.

The barrel 82 having the protruding shaft portion 82b shown in FIG. 10 is rotatable counterclockwise in FIG. 11 (in the direction indicated by the arrow in FIG. 11) with respect to the brake body 86 having the protruding frame portion 86b. Is configured. On the other hand, when the barrel 82 is to be rotated clockwise in the figure, the outer end 163 of the clutch spring 160 is engaged with the projecting frame 86b, so that the barrel 82 and the brake 86 are engaged in the rotational direction. Then, the barrel 82 and the braking body 86 rotate together.

As described above, in the present embodiment, the projecting shaft portion 82b, the projecting frame portion 86b, and the clutch spring 1
60 transmission, but does not transmit the rotation becomes the rotation sliding portion when the barrel 82 is rotated in one direction, the braking member 86 to rotate attached to the braking member 86 rotation direction when the barrel 82 is rotated in the other direction is configured rotated intermittently means to configured as a one-way clutch.

In the present embodiment, when the barrel 82 rotates in the one direction, the barrel 81 is wound and tightened. The barrel 82 is rotated in the other direction by the elastic force of the wound spring 81. It is configured to be driven.

In this embodiment, when the barrel 82 is driven to rotate in one direction via the gear 87 and the barrel lid 83,
Since rotation is not transmitted between the barrel 82 and the braking body 86, the barrel 82 can wind the mainspring 81 without receiving braking torque.

On the other hand, when the barrel 82 is rotationally driven by the wound mainspring 81, the barrel 82 and the brake 86 are coupled in the rotational direction via the clutch spring 160, so that the barrel 82 is It rotates slowly while receiving braking torque from 86.

Since the present embodiment functions as described above,
Even if the mainspring 81 receives an excessive driving torque when it is tightened, the barrel 82 does not receive the braking torque, so that damage and destruction of the internal mechanism can be prevented. Further, even when the viscosity of the fluid substance increases due to a decrease in temperature, the probability of damage or destruction of the internal mechanism does not increase, and the mainspring 81 is easily wound regardless of the viscosity of the fluid substance. Can be.

[0084] In this embodiment, a driving force storage portion constituted by the spiral spring 81 and barrel 82, the braking member 86
And a braking unit (constituted in the winding core 80) is integrally formed, and a compact driving device having a very simple structure can be constituted by the rotation interrupting means including the clutch spring 160. It also has the advantage.

[Eighth Embodiment] Next, an eighth embodiment of a device provided with a mainspring mechanism according to the present invention will be described with reference to FIG. This embodiment uses drawer D
The mainspring mechanism Z of each of the above embodiments is attached to a drawer mechanism having a case-shaped drawer accommodation portion E configured to accommodate the drawer D. The mainspring mechanism Z is attached to the inside of the drawer housing portion E, and has a cylindrical member 18D and a band member 19 whose base end is connected to the cylindrical member 18D as output means. The tip of the band 19 is attached to the inner end of the drawer D.

[0086] In this embodiment, a mainspring in the mainspring mechanism Z is seamed by drawing as shown drawer D, it is locked by a lock mechanism (not shown). When the locked state is released in this state, the cylindrical member 18D is rotated by the driving force of the mainspring, so that the band material 19 is wound around the cylindrical member 18D, and the mainspring mechanism Z is rotated.
The drawer D is slowly pulled in by the braking force provided by the braking unit inside.

[0087] In the pull-out mechanism of the embodiment,
When the drawer D is pulled out, the mainspring in the mainspring mechanism Z is wound and pulled out by the driving force of the mainspring.
Although but is configured to be stored in the drawer housing portion E, conversely, the mainspring of the mainspring mechanism Z is seamed when storing drawer D, it is locked in a state where the drawer D is stored, the locking , The drawer D may be slowly pulled out by the driving force of the mainspring.

[Ninth Embodiment] Finally, a ninth embodiment of a device provided with a mainspring mechanism according to the present invention will be described with reference to FIG. This embodiment shows an example in which the present invention is applied to a movable toy. A movable portion G (tail fin) and a movable portion H (chest fin) are swingably attached to the toy body F. A spring mechanism Z is built in the toy body F, and the mainspring mechanism Z includes, as output means, a cylindrical member 18E, an output shaft 18F attached to the cylindrical member 18E, and an output shaft 18F. An engaged transmission belt 18G is provided. The tip of the transmission belt 18G is attached to the end of the movable parts G and H.

When the cylindrical member 18E is rotated by the driving force of the mainspring in the mainspring mechanism Z, the output shaft 18F turns and swings the transmission belt 18G.
Swings in conjunction to this. Therefore, for example, if the tip of the output shaft 18F is made to protrude out of the toy body F, the mainspring in the mainspring mechanism Z is wound by rotating the output shaft 18F, and the output shaft 18F is movable by releasing the output shaft 18F. The portions G and H can be made to swing.

[Others] The mainspring mechanism and apparatus of the present invention are not limited to the above-described illustrated examples, and it is a matter of course that various changes can be made without departing from the gist of the present invention. .

For example, in each of the above embodiments, a single mainspring is provided. However, a plurality of mainsprings may be provided to increase the driving force or to extend the driving time or driving distance. In this case, for example, a relatively compact configuration can be achieved by stacking and arranging a plurality of springs in the axial direction. Here, when a plurality of stages of the mainspring are provided, it is possible to set the winding tightening force (driving force) of each stage to a different value. Can be set freely and arbitrarily, and delicate setting is also facilitated.

The mainspring mechanism of the present invention has a reduced size,
For the purpose of thinning, it is preferable that most parts (rotating member (shaft member) and spring accommodating portion, etc.) are formed of metal, and output means is formed of synthetic resin to reduce noise. preferable.

As the spring, a spring in which stainless steel or iron material is generally formed into a spiral shape is used, but the spring is not limited to this. It may be something.

As the fluid substance, it is preferable to use various fluid substances, but it is not limited to the fluid substance, and it is also possible to use various liquids and powders (granules) other than the fluid substance. .

[0095]

As described above, according to the present invention, the driving force accumulating portion composed of a mainspring and the like and the braking portion for generating some rotational resistance are arranged so as not to overlap in a plane. Accordingly, without increasing the number of parts, can be a simple structure, it is possible to reduce the manufacturing cost, it is possible to easily reduce the thickness of the mainspring mechanism.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing the structure of a first embodiment of a mainspring mechanism according to the present invention.

FIG. 2 is a plan view showing a mainspring set state in a mainspring case in the first embodiment.

FIG. 3 is an assembled cross-sectional view of a state where the mainspring mechanism of the first embodiment is incorporated in a device.

FIG. 4 is a plan view showing a state where the mainspring mechanism according to the first embodiment is incorporated in a device.

FIG. 5 is a longitudinal sectional view showing a structure according to a second embodiment of the present invention.

FIG. 6 is a longitudinal sectional view showing a structure of a third embodiment according to the present invention.

FIG. 7 is a longitudinal sectional view showing a structure of a fourth embodiment according to the present invention.

FIG. 8 is a longitudinal sectional view showing a structure of a fifth embodiment according to the present invention.

FIG. 9 is a longitudinal sectional view showing a structure of a sixth embodiment according to the present invention.

FIG. 10 is a longitudinal sectional view showing the structure of a seventh embodiment according to the present invention.

FIG. 11 is a cross-sectional view showing a structure of a rotation intermittent portion according to a seventh embodiment.

FIG. 12 is a schematic perspective view schematically showing the structure of an eighth embodiment according to the present invention.

FIG. 13 is a schematic perspective view schematically showing the structure of a ninth embodiment according to the present invention.

[Explanation of symbols]

10,30,40,50,60,70,80 core 11,31,41,51,61,71,81 spring 12,32,42,52,62,72,82 barrel 13,33,43,53 , 63, 73, 83 Incense barrel cover 14, 34, 44, 54, 64, 74, 84 Brake case 15, 35, 45, 55, 65, 75, 85 Fluid material 16, 36, 46, 76 Brake case cover 56, 66, 86 Braking body 17, 37, 57, 67, 77, 87 Driving force transmitting means (gear) 21 Spring mechanism 22 Plate 23 Storage section 24 Case lid 25 Set screw 38, 58 Packing

Continued on the front page (72) Inventor Shoichi Nagao 3-3-5 Yamato, Suwa-shi, Nagano F-term in Seiko Epson Corporation 3D022 CD02 CD12

Claims (12)

[Claims] A mainspring that is wound by a winding force to accumulate a restoring force; A mainspring mechanism comprising: a main member connected to an inner end of a mainspring; and a braking portion that applies a braking force to a relative movement between the mainspring receiving portion and the central member, wherein the driving force accumulating portion and the braking portion Is a spring mechanism that is disposed so as not to substantially overlap when viewed in the axial direction of the spring. Wherein said braking unit includes a mainspring mechanism according to claim 1, characterized in that disposed along the outer periphery of the driving force storage unit. Wherein said braking unit includes a brake member for receiving the braking force, the braking body, the mainspring according to claim 2, characterized in that provided in the outer peripheral portion of the driving force storage unit mechanism. 4. A spiral spring mechanism according to claim 1, wherein the driving force accumulating portion being sealed. Wherein said driving force storage unit or the central member, the mainspring mechanism according to claim 1, wherein the output means for outputting the driving force of the mainspring is attached. 6. The mainspring mechanism according to claim 1, wherein the braking unit is disposed inside the driving force accumulation unit. 7. The mainspring mechanism according to claim 6, wherein the braking portion is disposed inside the center member. 8. The mainspring mechanism according to claim 1, wherein a slip means is provided in a rotation transmission path from the mainspring to the braking portion. 9. mainspring mechanism according to claim 1, characterized in that rotating interrupter is provided for intermittently rotating transfer from the mainspring to the braking portion. Wherein said rotary intermittent means, when said driving force accumulation unit accumulates a driving force Disconnect rotation transmission, so when the driving force storage unit to emit driving force to transmit the rotation The mainspring mechanism according to claim 9, wherein the mainspring mechanism is configured. 11. The method according to claim 1, wherein
An apparatus comprising: a mainspring mechanism according to item 1; and an opening / closing unit driven to be opened and closed by the mainspring mechanism. 12. The method according to claim 1, wherein
An apparatus comprising: the mainspring mechanism described in the above section; and a movable part driven by the mainspring mechanism.