JP3354877B2 - Door devices such as mechanical clocks - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door device for a timepiece and the like.

[0002]

2. Description of the Related Art A so-called mechanical clock is used in which decorations imitating dolls and animals appear at the front of the clock at the hour and hide inside the clock again after a predetermined time has elapsed. In general, a door device is used to make the decoration visible from the front or to hide the decoration to make it invisible.

There are various types of mechanical timepieces employing such a door device. For example, as a first example, a movable table provided with a decoration on the upper surface and opened and closed in conjunction with the forward and backward movement of the movable body. A combination with a door has been proposed (Japanese Utility Model Laid-Open No. 2-71295).

As a second example, a dial has been proposed in which a dial is vertically divided by the position of a pointer shaft, and the dial is opened and closed by moving up and down, so that a decoration provided behind the dial appears. (Japanese Patent No. 2585944)
issue).

Similarly, there is a type in which a dial is divided into right and left sides and a cam and a cam follower serve as a door which can be opened and closed around an upper end portion. When both doors are fully opened, they are pressed to a predetermined position by a leaf spring (see Japanese Patent Publication No. 5-7).
No. 5997).

As a third example, a decoration and a door are provided coaxially and integrally with a rotating body that rotates in a horizontal direction, and the door is normally in a closed state. There is one in which the body is rotated in the horizontal direction so that the door is hidden and the decoration appears on the front (Japanese Patent Publication No. 5-24474). There has been proposed a device in which a decoration plate is made to be visible and hidden by an up-and-down plate integrated with a door moving up and down along a rail (Japanese Patent No. 27597).
No. 61).

As a fourth example, in a door for opening and closing an opening provided in an outer frame of a mechanical timepiece in which a decorative body on a stage operates, a plurality of movable decorative bodies provided in the vicinity of the opening correspond to a drive shaft. There has been proposed an arrangement in which the revolving door is smoothly rotated by arranging the revolving doors in a well-balanced manner (Japanese Patent Publication No. 5-55834).

[0008]

In each of the above-mentioned prior arts, the opening and closing members are heavy, so that the load on the driving device is increased and power consumption is large, and the driving device is stopped at a predetermined position due to large inertia. There is a problem that smooth movement cannot be obtained due to the difficulty in performing the above operations.

In any of the prior arts, it is assumed that the camera is used in a certain posture. Therefore, if the camera is used in a tilted state, sideways or upside down, malfunction may occur or a desired opening / closing speed may be obtained. There is a problem that cannot be obtained.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is to rotate a door that is openably and closably mounted on a frame having an opening to open and close the above-mentioned opening. By adopting the following means, there is no gap or backlash when the door is closed, and the door is not displaced by its own weight due to the arrangement and inclination of the door.

The door has a decorative portion at one end.
A support is suspended from the decorative part, and the door is
Shaft that is supported by the bearing through an intermediate position of the section
Can be freely opened and closed around the above frame
And a top end of the support portion opposite to the decorative portion.
The balancer that adjusts the weight balance around the support shaft is fixed.
That is driven to swing in conjunction with the drive lever
The support shaft is inserted through the base of the lever.
To the drive lever is engaged, a rotation available-at a relatively predetermined rotational range relative to the support part, with the direction to close the door between the driven lever and the support portion When the door is closed via the driven lever by providing a biasing elastic member, the elastic member presses the door against the frame within the rotatable range of the driven lever. Since one end of the support portion of the door is a decorative portion as described above, the weight of the one end may be displaced by its own weight in a state where the weight of the one end is increased and inclined, so the means for preventing this is the other end of the support portion. Is equipped with a balancer.

Further, the above-mentioned elastic member is a coil spring, which applies an urging force between the driven lever and the supporting portion of the door in a direction to close the door, and is attached in a compressed state, thereby being axially mounted. , The driven lever is biased in a direction away from the door. This prevents the door from being displaced by its own weight by preventing the generation of a gap between the door and the opening of the frame and increasing the frictional force between the door and the frame.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is directed to a frame having an opening, a door is mounted on the frame via a bearing so as to be openable and closable, and the opening is opened and closed by rotating a door by driving a drive lever. This is a door device for a mechanical clock or the like, and the door has a decorative portion at one end.
The support is suspended from the support, and this door is located inside the support.
Centering on the spindle supported by the bearing
It is attached to the frame so that it can be opened and closed freely. Also support
At the end of the part opposite to the decorative part, a weight
The balancer for adjusting the lance is fixed. Drive lever
The driven lever, which is driven to swing in conjunction with the
Shaft is inserted, it engaged driving lever engaged at its distal end, Oh <br/> Ru in rotation available-at a relatively predetermined rotation range relative to the support portion. An elastic member is provided between the driven lever and the support to urge the door in the closing direction.

The elastic member is a coil spring, which closes the door.
The driven lever is elastically contacted with the bearing at the same time as it is urged in the turning direction.
It is desirable to be in a state .

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a door device D such as three mechanical watches.
It is a front view showing the state where 1, D2 and D3 were attached to a frame as one group. Hereinafter, since D1 to D3 have the same configuration, the following description will focus on the door device D located at the center.
The explanation will be focused on 1.

FIG. 2 shows a state in which the door device D1 located at the center of these door devices is viewed from above (viewed from an arrow A). FIG. 3 shows the door device D1 also viewed from below. (B arrow).

The front shape of each door 2 (decorative portion 2a) is circular, and a circular decorative plate 3 is provided on the front.
On the decorative plate 3, the designed time display characters 1 to 12 (1
1, 1 and 2) are displayed.

As shown in FIGS. 1 to 3, a door 2 is mounted on an opening 1a of a frame 1 having a U-shaped cross section. Door 2
Is in a closed state, so that the disc-shaped decorative portion 2a
Thus, the decoration 12 such as a doll provided behind is covered.

FIG. 4 is an enlarged view of the door. An upper support 2b and a lower support 2c are provided vertically on the decorative portion 2a. Are formed.

The decorative portion 2a is provided with an opening 2e by hollowing out the interior to reduce the weight, and a decorative plate 3 made of a thin aluminum disk is affixed to the front side of the decorative portion.

A balancer 4 made of a metal plate is provided at the tip of each of the supporting portions 2b and 2c opposite to the decorative portion 2a.
a, 4a, and adjusts the weight balance around the support shaft 5, which will be described later, so that the door 2 can be in any posture.
Is designed not to move under its own weight. Both support parts 2
At the intermediate position between b and 2c, the support shaft 5 is inserted so as to penetrate. The support shaft 5 is rotatably supported by bearings 6 and 6 which are detachably attached to the edge of the frame 1. The engagement portion formed at the lower portion of the bearing 6 engages with the grooves 5a formed near both ends of the support shaft 5, thereby preventing the support shaft from moving in the axial direction.

A driven lever 7 is provided on the outer surface (lower side) of the lower support portion 2c so that the door 2 is interlocked with the drive lever 10 described later. FIG. 5 shows the driven lever 7
Surface facing the lower supporting portion 2b is shown in a table, and an insertion hole 7a through which the support shaft 5 is inserted is provided in the base portion,
In the vicinity of the distal end of the driven lever 7, there is provided a slit portion 7b with which the projection of the drive lever 10 is engaged. Further, the intermediate position of the driven lever 7 is enlarged in the lateral direction, and a projection 7c is provided at the end of the enlarged portion.

An elastic member 8 to be described later is provided around the insertion hole 7a.
Is formed, and an outward groove 7e is provided in one of the concave portions.

FIG. 6 shows a state in which the door 2 is viewed from below, and an insertion hole 2f through which the support shaft 5 is inserted is provided at an intermediate position near the lower end of the lower support portion 2c. A locking hole 2g for locking the protrusion 7c of the driven lever is provided. The locking hole 2g has a larger area than the projection 7c so that the driven lever 7 can swing relatively to the door 2. A recess 2h for accommodating the coil spring 8 is provided around the insertion hole 2f. A groove 2i is provided at one position of the recess 2h.

As shown in FIG. 4, a coil spring 8 is compressed and twisted in a hollow portion formed around the support shaft 5 by concave portions 2h and 7d formed on the opposing surface of the lower support portion 2c and the driven lever 7. It is stored in a state.

A coil spring is employed for the elastic member 8, and the coil spring has an inner diameter of the coil slightly larger than an outer diameter of the support shaft 5, as shown in FIG.
Locking portions 8a, 8a extending linearly outward at both ends
Is provided. These locking portions 8a, 8a are capable of absorbing and releasing elastic energy generated by torsion of the coil spring by being engaged with the groove 2i of the lower support portion and the groove 7e of the driven lever.

When the coil spring 8 is incorporated into the door 2, a state where a torsional stress is exerted in a state where both the locking portions 8a and 8a are engaged with the two grooves 2i and 7e is provided.
Is pressed against the lower support 2c to bring it into a compressed state. Therefore, in the assembled state, the coil spring 8 is in a state of urging the driven lever 7 and the door 2 away from each other, and is in an elastic contact state in which the driven lever 7 elastically contacts the edge (the bearing 6) of the frame 1. It has become.

The elastic contact between the frame 1 and the driven lever 7 caused by the coil spring 8 acts to increase the frictional force when the door 2 swings, so that the door 2 is inclined. This makes it possible to prevent rocking due to its own weight even when the user is present.

As shown in FIG. 8, when the coil spring 8 is biased in the torsion direction, the drive lever 10 is engaged with the driven lever 7, and the coil spring 8 is As the door 2 is urged clockwise,
The protrusion 7c of the driven lever 7 abuts on the counterclockwise side in the locking hole 2g of the lower support 2c. When the drive lever 10 rotates the driven lever 7 in the clockwise direction to close the door 2, if the protrusion 2d of the upper support 2b abuts on the rib 1b of the frame 1, the door 2 cannot move further. Therefore, only the driven lever 7 rotates and stops within the range of the dimensional difference between the locking hole 2g and the protrusion 7c against the elastic torque of the coil spring 8. The stop position when the door 2 is closed in this way is determined by the locking hole 2 after the protrusion 2d contacts the rib-like portion 1b.
If the door 2 is set between the position where the protrusion 2g and the protrusion 7c abut and cannot move, the door 2 is always in elastic contact with the rib-like portion 1b via the protrusion 2d when the door is closed. It is possible to maintain the state without. That is, an elastic member is provided between the driven lever 7 and the lower support portion 2c in addition to the original urging force in the direction in which the door is closed.

When the door is opened, the initial movement of the drive lever is only a movement for returning the phase of the driven lever 7, so that the door 2 does not move, and when the phase of the driven lever 7 returns to the position shown by the solid line. Door 2 starts to rotate for the first time.

FIG. 9 shows three door devices D1, D1 shown in FIG.
A state is shown in which D2 and D3 are incorporated so that they can be opened and closed by a single door opening and closing machine 9, respectively.

The outer periphery of the case of the door opening / closing machine body 9 is formed with a radius of curvature corresponding to the inner shape of the inner edge of the frame 1, and is formed in a recess (not shown) formed on the back side.
When the projection 1d formed inside the frame is engaged, the positioning with the frame is performed.

Each radiation L extending vertically from the center of each door 2
Drive shafts 11 for swinging the respective drive levers 10 are provided on 1, L2, and L3 at positions at a fixed distance from the center point O1, which is the intersection of these radiations. These three drive shafts 11 can be rotated at an arbitrary timing by a motor 14 mounted on the back side of the door opening and closing machine 9.

The drive lever 10 is press-fitted into the drive shaft 11 through a hole in the base, and can swing without slipping with respect to the rotation of the drive shaft 11. The swing timing of each drive lever 10 is directly used as the opening / closing timing of each door. This timing is determined between the wheel train (not shown) and the general bus stop (not shown) built in the door opening / closing machine. It is set by combination. The tip of each drive lever 10 is connected to a driven lever 7 attached to each door.
(See FIG. 5).

In the state shown in FIG. 9, each drive lever 1
0 is located at the right, and the door 2 is being stopped in a state of elastic contact with the frame 1. In this state, an hour signal is transmitted to the door opening / closing block, and each drive shaft 11 rotates at a predetermined timing to move each drive lever 10 in a counterclockwise direction. Finally, as shown in FIG. 10, all of the drive levers 10 move to the left end, and the doors 2 are also in a state perpendicular to the sheet of FIG. 10 to be completely opened.

A decoration 12 imitating a doll is provided behind a door 2 via a decoration plate 13. Since the decorative portion 2a of the door 2 has a sufficient area to cover the decoration 12, when the door 2 is completely opened, the outer peripheral portion hits the bottom of the frame 1. Escape hole 1c at bottom
Is provided.

After a lapse of a predetermined time in the door opening state shown in FIG. 10, each door 2 starts closing at a timing opposite to the timing at the time of opening, and finally returns to the state shown in FIG.
At this time, each door 2 is resiliently contacted with the frame 1 by the torque of the coil spring 8, and there is no gap.

FIGS. 9 and 10 show a group of three door devices. These groups are grouped into four groups and provided with hour display characters at 1 to 12 o'clock. This constitutes a mechanism.

It should be noted that the illustrated design of the mechanism clock and the combination of the door devices are merely examples, and other various designs and combinations can be adopted.

Although the above description has been given of a door device for a mechanical timepiece, the door device can be applied to other timepieces and various decorative devices.

[0041]

According to the present invention, the door can be maintained in a stable state because the door does not move due to its own weight regardless of the attitude of the door. Further, since the door is elastically contacted with the frame when the door is closed, both the door and the frame can be maintained in a state without any gap or play due to the relationship between the door and the frame.

As described above, the posture of the door is stable, and the door can be maintained in a state without any gap or play. Therefore, even when a plurality of doors are used in various states, the movement does not become uneven. Clocks and the like can be provided.

[Brief description of the drawings]

FIG. 1 is a front view of a door device according to an embodiment.

FIG. 2 is a plan view showing a part of FIG. 1 as viewed from above (viewed from an arrow A).

FIG. 3 is a rear view showing a part of FIG. 1 as viewed from below (in the direction of arrow B);

FIG. 4 is a partial cross-sectional view showing a door assembly.

FIG. 5 is a rear view of the driven lever.

FIG. 6 is a rear view of the door.

FIG. 7 shows a coil spring, wherein (a) is a front view,
(B) is a side view.

FIG. 8 is a rear view showing a state where a door is closed.

FIG. 9 is a front view showing a state in which the door opening / closing mechanism is incorporated in the door mechanism (closed state).

FIG. 10 is a front view showing a state in which the door opening / closing mechanism is incorporated in the door mechanism (door opening state).

[Explanation of symbols]

 D1, D2, D3 Door device 1 Frame 1a Opening 2 Door 2b, 2c Support portion 4 Balancer 5 Support shaft 6 Bearing 7 Follower lever 8 Elastic member (coil spring) 10 Drive lever

Claims (2)

(57) [Claims] A frame having a 1. A opening, with the door via a bearing that is attached to the frame is mounted for opening and closing said door is rotated by driving the drive lever can open and close the aperture A door device for a mechanical timepiece or the like, wherein the door is provided with a decorative portion at one end, and is supported by the decorative portion.
A holding part is vertically provided, and the door penetrates an intermediate position of the supporting part and is connected to the bearing
The above frame can be opened and closed freely around the supported spindle.
The support shaft is attached to a tip of the support portion opposite to the decorative portion.
A balancer that adjusts the weight balance around
Ri, driven lever which is swung in association with the drive lever
The above-mentioned support shaft is inserted in the base, and the above-mentioned
The drive lever is engaged, a rotation available-at a relatively predetermined rotational range relative to the support section to urge the direction to close the door between the driven lever and the support portion A door device for a mechanical timepiece or the like, wherein an elastic member is provided. Wherein Oite to claim 1, said elastic member is a coil spring, and at the same time urging direction to close the door
A door device for a mechanical timepiece or the like, wherein the driven lever is brought into elastic contact with the bearing .