JPH09105435A - Slow-acting device for opening and closing member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To arbitrarily set the mounting position of a slow-acting device itself on an applicable apparatus, and to not only increase the degree of freedom of the design of an apparatus but also provide a multiaplication function. SOLUTION: A slow-acting device for an opening closing member comprises a fixing body 2 fixed to a support member 9; a rotary body 3 rotatably mounted on the fixing body 2; a fin member 50 located between the fixing body 2 and the rotary body 3; a plastic spring 51 inserted externally in such a state to span between the rotary body 3 and the fin member 50 and connect and disconnect rotation of the rotary body 3 with and from the fin member 50; a viscous grease 5 with which a space between the fixing body 2 and the fin member 50 is filled; and a flexible long substance wound around the rotary body 3 in such a state that one end is fixed to the rotary body. The flexible long substance has the other end coupled to the opening closing member.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lid of a reproducing device such as a cassette tape, a video tape or a compact disc (CD), a laser video disc (LVD),
The present invention relates to a loosening device that gently opens and closes an opening / closing member such as a shoji screen of a building skylight and a drawer of furniture such as a door, a desk, and a locker.

[0002]

2. Description of the Related Art In the above-mentioned opening / closing member loosening device, gears meshing with each other are attached to the center of rotation of the opening / closing member which is rotated by the operation of the opening / closing member and a supporting member for supporting the opening / closing member.
Viscous grease is filled in the center of rotation of the opening / closing member that rotates by the operation of this gear.

[0003]

However, since the gear is formed in a predetermined size according to the size and application of the opening / closing member, the mounting position of the opening / closing member is limited and the degree of freedom in design is narrowed. In addition, since the gears need to be attached so as to mesh with each other, the structure of the slack device is complicated, the assembly is troublesome, and there is a disadvantage that the gear is expensive.

Therefore, according to the present invention, the mounting position of the loosening device itself to the applicable equipment can be arbitrarily set, and not only the degree of freedom in designing the equipment can be expanded, but also the versatile function can be exerted. The purpose is to provide a device.

[0005]

In order to achieve the above object, the invention of claim 1 is a fixed body fixed to a support member, and a rotary body rotatably attached to the fixed body.
A fin member interposed between the fixed body and the rotating body,
A clutch spring that is provided between the rotating body and the fin member, and that interrupts rotation of the rotating body between the fin member, viscous grease filled between the fixed body and the fin member, and the rotating body. A flexible elongated body having one end fixed to a body and being wound, the flexible elongated body being used by connecting the other end to an opening / closing member.

According to a second aspect of the present invention, a fixed body fixed to the support member, a rotary body rotatably attached to the fixed body, and one end between the rotary body and the fixed body are the rotary body. A return spring for accumulating the other end of which is locked to a fixed body to give a return rotation to the rotating body; a fin member interposed between the fixed body and the rotating body; A clutch spring, which is provided between the body and the fin member, connects and disconnects the rotation of the rotating body between the fin member, the viscous grease filled between the fixed body and the fin member, and the rotating body. A flexible elongated body wound around the rotating body in a rotation direction opposite to the direction in which the stored force of the return spring acts, and the flexible elongated body. Is used by connecting the other end to the opening / closing member. That.

Further, the invention of claim 3 is characterized in that a bobbin is formed on the rotary body, and one end of the flexible elongated body is fixed and wound around the bobbin, and the other end is pulled out. To do.

Further, in the invention of claim 4, two rows of bobbins are formed in the rotating body, and separate flexible elongated bodies are provided in each row of the bobbins, with one end fixed in opposite directions. It is characterized in that it is wrapped around and pulled out in the opposite direction.

Further, according to a fifth aspect of the present invention, in the flexible elongated body wound around the rotating body, the portion extending to the side opposite to the one end fixed to the rotating body is directed in the opposite direction. It is characterized in that the free end is connected to the opening / closing member.

Further, in the invention of claim 6, in order to guide the movement of the flexible elongated body with respect to the looseness of the flexible elongated body, the flexible elongated body is wound around the outer periphery of the rotating body. A guide member for guiding the projecting portion is provided on the fixed body.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. In each embodiment, the same elements will be denoted by the same reference symbols and redundant description will be omitted.

FIG. 1 is a sectional view (a) and a front view (b) showing an embodiment of the present invention. In the figure, a loosening device 1 includes a fixed body 2 fixed to a support member 9, a rotating body 3 rotatably attached to the fixed body 2, and a rotating body 3 between the rotating body 3 and the fixed body 2. Between the fixed body 2 and the rotary body 3, a return spring 4 for accumulating the rotary body 3 having one end and the fixed body 2 at the other end for giving return rotation to the rotary body 3. A fin member 50 interposed between the rotor 3 and the fin member 50, and a clutch spring 51 provided between the rotor 3 and the fin member 50 for interrupting the rotation of the rotor 3 with the fin member 50; The viscous grease 5 filled between the fin member 50 and one end of the viscous grease is fixed to the rotating body 3, and the viscous grease 5 is wound around the rotating body 3 in a rotation direction opposite to the direction in which the restoring force of the return spring 4 acts. And a flexible elongated body 14.

The fixed body 2 has a plate-shaped substrate 6 and cylindrical fins 8 formed on the substrate 6, and is fixed to the support member 9 by fixing the substrate 6 to the support member 9. Is attached to. This fixing is performed by screwing screw rods 10a of a plurality of guide members 10 described later onto the support member 9 and pressing the substrate 6 against the support member 9 by the end surface of the guide rods 10b. And the substrate 6 can be attached to the support member 9 at the same time. These attachments are not limited to the above-described attachment methods, and each attachment may be separately attached with a screw or an adhesive.

In the rotating body 3, the shaft portion 13 in the central portion has the fixed body 2.
Rotatably inserted into the shaft body 13. A retaining pin 17 is inserted into the shaft portion 13 of the rotating body 3 so that the rotating body 13 does not come off from the fixed body 2.

Further, a bobbin 15 around which the rope 14 which is a flexible elongated body is wound is formed on the rotating body 3, and the rope 14 is wound around the bobbin 15 when the rotating body 3 rotates in one direction. The bobbin 15 is pulled out from the bobbin 15 by being rotated in the other direction. The base end 1 of this rope 14
4a is a slit 15 formed on the outer periphery of the bottom of the bobbin 15.
It is passed through the inside of a and folded back in an arc shape, and a snap ring 16 is caulked and fixed to the overlapping portion. This makes bobbin 1
Stopping from 5 is done. The tip of the rope 14 is connected to a cassette lid 22 (see FIG. 3) described later, whereby the rope 14 serves as a rotational force transmitting means for rotating the rotating body 3 in one direction.

Between the fixed body 2 and the rotary body 3, a return spring 4 for accumulating the rotary body 3 for giving return rotation is provided. One end is the fixed body 2 and the other end is the rotary body 3. It is provided by being locked to. In the present embodiment, the torsion spring is provided in a state of being wound around the outer side of the rotating body 3.

The fin member 50 has a fin 50b into which the fin 8 of the fixed body 2 is inserted, and is rotatably interposed between the fixed body 2 and the rotary body 3. In the present embodiment, the cross-sectional shape is folded back in multiple stages, and the cylindrical portion 50a located at the innermost center thereof is rotatably externally fitted to the shaft portion 13 of the fixed body 3.

Further, the right end of the shaft portion 13 of the rotating body 3 is formed so as to have the same outer diameter as the cylindrical portion 50a, and the clutch spring 51 is externally inserted between them in a suspended manner. ing. The clutch spring 51 is wound so as to have an inner diameter smaller than the outer diameters of the cylindrical portion 50a and the shaft portion 13 of the rotating body 3 in the free state. Be seen.

Therefore, when the rotation of the rotating body 3 is in the diameter reducing direction of the clutch spring 51, the diameter of the clutch spring 51 is reduced and the frictional force of the clutch spring 51 acts on the cylindrical portion 50a and the shaft portion 13 of the rotating body 3. Therefore, the fin member 50
And the rotating body 3 are integrated, and the fin member 50 rotates together with the rotating body 3. On the other hand, when the rotation of the rotating body 3 is in the opposite direction to the winding direction of the clutch spring 51, the clutch spring 51 expands in diameter and slips, so that the fin member 50 does not rotate.

Viscous grease 5 is sealed between the fins 8 of the fixed body 2 and the fins 50b of the fin member 50. The viscous grease 5 is applied to the outer surfaces of the fins 8 and 50b, etc., and enclosed between the fins 8 and 50b.
When the fin member 50 rotates due to the rotation, the shearing force acts and the rotating body 3 becomes a resistance against the rotating body. Thereby, the rotating body 3 rotates slowly and performs a slow operation.

The guide member 10 is a guide rod 10b.
And a screw rod 10a, and the screw rod 10a
Is inserted into a mounting hole 2a formed in the fixed body 2 and then screwed into the support member 9. The mounting hole 2a is the substrate 3 of the fixed body 2.
Are formed at regular intervals in each of the mounting holes 2a and the guide member 10
The fixed body 2 is fixed to the support member 9 by attaching. In such an attached state, the guide rod 10b of the guide member 10 is provided along the bobbin 15 of the rotating body 3, and acts to smoothly guide the rope 14 to the bobbin 15 when the rope 14 is wound. Therefore,
The slack of the rope 14 during winding is prevented.

In this embodiment, the loosening operation described later is performed by connecting the cassette lid 22 for opening and closing and the rope 14. However, since the length of the rope 14 can be easily adjusted, the attachment position can be changed. You can select freely and expand the degree of freedom in design. Further, since no gear is required, the structure can be simplified and the assembling becomes easy.

Next, a usage example in which the above embodiment is applied to the cassette tape recorder 20 will be described with reference to FIGS. 3 (a) and 3 (b). Cassette tape recorder 2 of this application example
0 is a main body 21 in which a cassette can be taken in and out,
It is provided with a cassette lid 22 that serves as a cassette loading / unloading port, and the loosening device 1 is attached to the main body 21.

The cassette lid 22 is made of a transparent material such as a glass plate or an acrylic plate, and an "L" -shaped bracket 23 is attached to the lower end of the cassette lid 22.
One is pivoted.

A stopper 25 for closing the cassette lid 22 is attached to the end of the main body 21.
Further, a terminal 26 to which the tip of the rope 14 is connected is attached to an intermediate portion of the cassette lid 22, so that the cassette lid 22 for opening and closing and the loosening device 1 are connected.

In such a cassette tape recorder 20, when the stopper 25 is rotated to set the cassette lid 22 in a free state, the cassette lid 22 is rotated by its own weight, and FIG.
As shown in (a) to (b), the body 21 is opened and the body 21 is opened.

In the rotating operation of the cassette lid 22, the rope 14 is pulled out and the rotating body 3 is rotated,
Since this rotation causes the clutch spring 51 to reduce its diameter, the fin member 50 also rotates, and the viscous grease 5 between the fin member 50 and the fixed body 2 serves as resistance, so that the cassette lid 2
2 rotates slowly. In the opening operation of the cassette lid 22, the return spring 4 is wound and the energy for rotating the cassette lid 22 in the closing direction is accumulated.

The cassette lid 22 is closed by pushing up the cassette lid 22 by hand, but this closing operation can be performed with a small pushing force by the spring force of the return spring 4. In such a closing operation, the rotating body 3 rotates in the opposite direction by the spring force of the return spring 4, and the rope 14 is wound without loosening. Since this rotation direction is the direction in which the clutch spring 51 expands in diameter, slippage occurs and the fin member 50 does not rotate, so the viscous resistance of the viscous grease 5 does not act.

If the clutch spring 51 is used in the opposite way, the operation will be reversed. That is, the viscous resistance of the viscous grease 5 does not work when the cassette lid 22 is opened, but works when it is closed.

As described above, since the present invention does not perform the slow motion for the rotation in one direction and does not perform the slow motion for the other rotation, the present invention is applied to the equipment requiring such a property. Is effective.

FIGS. 4 (a) and 4 (b) show a modification of the use of the cassette tape recorder 20. In this example, the return spring 4 is wound and tightened in advance, and the cassette lid 22 to which the rope 14 is connected is biased in the closing direction by the return spring 4. Therefore, in the normal state, the cassette lid 22 maintains the closed state and is biased in the closing direction, and the stopper 27 stops the rotation of the cassette lid 22 against the biasing force of the return spring 4. It is provided in.

In this modified use example, the cassette lid 22 can be opened by rotating the cassette lid 22 by hand, and the fully opened state can be maintained by the stopper 27b provided below the main body 21. Therefore, the closing operation of the cassette lid 22 is automatically performed by the urging force of the return spring 4 by unlocking the stopper 27b. In this way, the resistance of the viscous grease 5 can be applied to either the opening or closing operation.

FIGS. 5A and 5B show still another example of use. This example is applied to the moving body 30 that moves horizontally. The moving body 30 is slidable on the rail 31, and has an “L” -shaped connecting member 3 at one end thereof.
2 is attached, and the tip of the rope 14 of the loosening device 1 is connected to the connecting member 32. Further, when the moving body 30 moves, stoppers 33 and 3 for restricting the moving amount thereof are provided.
4 are provided. These stoppers 33 and 34 regulate the backward movement of the moving body 30, and the one stopper 3
3 is detachable from the moving body 30. This restricts the backward movement of the slack moving device 1 due to the biasing of the return spring 4. On the other hand, the stopper 34 is provided so as to come into contact with the connecting member 32, and stops the moving body 30 from moving backward.

When the moving body 30 is manually moved forward (moved to the right in the illustrated example), the rope 14 is pulled out to rotate the rotating body 3, and energy is accumulated in the return spring 4 by this forward movement. The moving body 30 is urged in the backward direction, but the backward movement is locked by the engagement of the stopper 33 (FIG. 5A). Next, when the engagement of the stopper 33 is released, the movable body 30 is retracted by the return spring 4 (FIG. 5 (b)). Therefore, the viscous grease 5 is applied to either the forward or backward movement of the moving body 30.
Resistance works, the other does not work.

The above-mentioned usage examples are the cassette lid 22,
It can be applied by connecting the operating member such as the moving body 30 and the loosening device 1 with a long body such as a rope, and has an effect of expanding the application range as compared with a gear.

FIG. 2 is a sectional view showing another embodiment (a).
It is and front view (b). In this embodiment, the rotating body 3
Two rows of bobbins 15 are formed on each of the rows, and ropes 43 and 44 as the flexible elongated body 14 are fixed to each row of the bobbins 15 with one end fixed and wound in opposite directions and pulled out in opposite directions. Other than that, the return spring 4 is not provided, and the other points are the same as in the above-described embodiment.

Then, either rope 43 or 4
When the rotating body 3 is rotated by pulling out the clutch 4, the diameter of the clutch spring 51 is reduced, and the cylindrical portion 50a and the shaft portion 13 of the rotating body 3 are rotated.
Since the frictional force of the clutch spring 51 acts on the fin member 50 and the rotating body 3, the fin member 50 and the rotating member 3 are integrated.
Rotates with the rotating body 3. As a result, a slow motion is performed due to the resistance of the viscous grease 5.

On the other hand, the rotating body 3 is the clutch spring 51.
When rotating in the direction opposite to the winding direction of No. 1, the fin 50 does not rotate because the clutch spring 51 expands in diameter and slips. Therefore, in the rotation in this direction, the loosening operation by viscous grease is not performed. The guide member 1 for preventing the ropes 14, 43, 44 from being loosened during winding.
0 may be omitted if it does not hinder the operation as described above.

FIGS. 6 (a) and 6 (b) show an application example of this embodiment, which is applied to the lid 45 which is opened and closed by horizontal movement. Both ends of the lid 45 are bent downward to form connecting portions 45a and 45b.
The ropes 43 and 44 are fixed to the lower ends of the ropes, and the ends of the ropes 43 and 44 are connected to the connecting portions 45a and 45b.

Therefore, when the lid body 45 is pulled to the right from the state of FIG. 6A, the rope 43 is wound around the bobbin 41 and, at the same time, the rope 44 is pulled out from the bobbin 42 and the lid body 45 is pulled up. ) To the right and pulling the lid 45 to the left from this state, the rope 44 is wound around the bobbin 42 and the rope 43 at the same time.
Since the lid 45 moves to the left while being pulled out of the bobbin 41, the resistance of the viscous grease 5 can be applied in any of these directions.

At this time, if a return spring is provided in the loosening device 1 as in the embodiment shown in FIG. 1, energy of the return spring is accumulated by one movement of the lid 45, and the return spring is returned to the other. Spring automatically returns. Reference numeral 48 is a stopper, which locks the lid 45 when the energy of the return spring is accumulated, and is automatically returned when the stopper 48 is unlocked.

[0042]

As described in detail above, the present invention provides
Between the fixed body fixed to the support member, the rotating body rotatably attached to the fixed body, the fin member interposed between the fixed body and the rotating body, and between the rotating body and the fin member. And a viscous grease filled between the fixed body and the fin member, and one end of which is fixed to the rotary body. The flexible elongated body is used by connecting the other end to the opening / closing member. Therefore, in one rotation of the rotating body, the diameter of the clutch spring is reduced, the rotating body and the fin member are integrated, and the fin member rotates together with the rotating body.
Due to the resistance of the viscous grease 5 filled between the fixed body and the fixed body, the slow movement is performed, and when the other rotation of the rotating body (the direction opposite to the winding direction of the clutch spring), the clutch spring 51
Since the fan member 50 does not rotate due to the expansion of the diameter of the fan member 50, there is no use for the loose operation by viscous grease. Therefore, it is optimal for application to a device that requires a slow motion for rotation in one direction but unnecessary for rotation in the other direction, and can be downsized. In this case, the features of the present invention are
The above function is assembled into one unit, and it is sufficient to simply connect one end of the flexible elongated body to the opening / closing member to be controlled. Therefore, not only can the loosening device itself set the attachment position to the applied device, the degree of freedom in designing the device can be expanded, but also a versatile function can be exhibited.

Further, according to the present invention, a fixed body fixed to the support member, a rotary body rotatably attached to the fixed body, one end between the rotary body and the fixed body and the other end of the rotary body. A return spring for energizing the rotary body to give a return rotation to the fixed body, a fin member interposed between the fixed body and the rotary body, the rotary body and the fins A clutch spring that is provided between the fixed member and the fin member to interrupt the rotation of the rotary member, a viscous grease filled between the fixed member and the fin member, and one end fixed to the rotary member. And a flexible elongated body wound around the rotating body in a rotation direction opposite to the direction in which the return spring stores the force, and the flexible elongated body is It is characterized by being used by connecting the end to the opening / closing member. Therefore, according to the present invention, in addition to the effects described above, the pulling force applied to the flexible elongated body from the opening / closing member side is released, and when the flexible elongated body is released, the energy stored by the return spring is used. , The flexible elongated body is rewound on the rotating body, and the viscous resistance of grease is applied in any rotation direction at this time to open or close the flexible elongated body, in other words, to open or close the opening / closing member. Either (mainly return) can be loosened.

Further, forming a bobbin on the rotating body is effective for downsizing, and since one end of the flexible elongated body is fixed, the movement of the rotating body is controlled by the opening / closing member via the flexible elongated body. Is transmitted smoothly and reliably.

Further, since the flexible elongated body wound around the rotating body is wound around the rotating body with the portion extending to the side opposite to the one end fixed to the rotating body facing in the opposite direction.
The movement of the rotating body is reliably transmitted through the flexible elongated body.

Furthermore, when a guide member is provided,
The flexible elongated body can be guided so as not to loosen.

[Brief description of the drawings]

FIG. 1 is a sectional view (a) and a front view (b) showing an embodiment of the present invention.

FIG. 2 is a sectional view (a) and a front view (b) showing another embodiment of the present invention.

FIG. 3 is a side view (a) showing the operation of the application example of the invention.
(B).

FIG. 4 is side views (a) and (b) showing the operation of another application example of the present invention.

FIG. 5 is side views (a) and (b) showing the operation of still another application example of the present invention.

FIG. 6 is side views (a) and (b) showing the operation of still another application example of the present invention.

[Explanation of symbols]

 1 Loosening Device 2 Fixed Body 3 Rotating Body 4 Return Spring 5 Viscous Grease 9 Support Member 10 Guide Member 14, 43, 44 Rope (Flexible Long Body) 50 Fin Member 51 Clutch Spring

Claims (6)

[Claims] 1. A fixed body fixed to a support member, a rotary body rotatably attached to the fixed body, a fin member interposed between the fixed body and the rotary body, and the rotary body. A clutch spring provided between the fin member and the fin member for interrupting rotation of the rotor, viscous grease filled between the fixed member and the fin member, and one end of the rotor. A flexible elongated body wound in a fixed manner, the flexible elongated body being used by connecting the other end to the opening / closing member. apparatus. 2. A fixed body fixed to a support member, a rotary body rotatably attached to the fixed body, one end between the rotary body and the fixed body, and the other end between the fixed body and the fixed body. Between the rotating body and the fin member, a return spring for retaining energy, which is provided in a locked state, for giving return rotation to the rotating body, a fin member interposed between the fixed body and the rotating body, And a viscous grease filled between the fixed body and the fin member, a first end fixed to the rotary body and the return. The flexible elongated body is wound around the rotating body in a rotation direction opposite to the direction in which the spring force acts, and the flexible elongated body has an open / close member at the other end. Slow movement in the opening / closing member characterized by being used by connecting to apparatus. 3. A bobbin is formed on the rotating body, and one end of the flexible elongated body is fixed and wound around the bobbin, and the other end thereof is pulled out.
The loosening device in the opening / closing member according to [4]. 4. The rotating body is formed with two rows of bobbins, and each of the rows of the bobbin has a separate flexible elongated body fixed at one end and wound in opposite directions and pulled out in opposite directions. The loosening device for the opening / closing member according to claim 1 or 2, wherein 5. A flexible elongated body wound around a rotary body is wound around the rotary body with a portion extending to the opposite side from one end fixed to the rotary body in the opposite direction, and the flexible long body is free to rotate. 3. The end is connected to the opening / closing member, and the opening / closing member is connected.
The loosening device in the opening / closing member according to [4]. 6. A guide member for guiding the unwinding portion of the flexible elongated body on the outer periphery of the rotating body in order to guide the movement of the flexible elongated body with respect to the looseness of the flexible elongated body. The loosening device for an opening / closing member according to any one of claims 1, 2, 3, 4 and 5, which is provided on a fixed body.