JPH0249885A - Slow-operating device - Google Patents

Abstract

PURPOSE:To make a setup space smaller and reduce the number of part items as well as to facilitate their assembling by sealing viscous grease in space between a shaft member and a cylinder member relatively rotating, and assembling a spring which engages both ends with these members. CONSTITUTION:A shaft member 2 and a cylinder member 3 are assembled together so as to be relatively rotated, and viscous grease is sealed in a void between these members 2 and 3, while a spring 4, engaging both ends 4a, 4b with these members 2, 3, is thrust in a hook slit 9 from a guide slit 8 of an engaging piece 7 and externally inserted thereinto, thereby constituting a slow- operating device 1. In addition, the one end 4a of the spring 4 is attached to an external member 10 in using a fixed end and the other end 4b as a turning end. When this turning end 4b is rotated in both c.w. and c.c.w. directions and thereby a cover body 12 is opened or closed, the grease works and this cover body is therefore smoothly opened or closed, thus it comes to opening or closing facility through an engaged position of the end 4b.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a slowing device that performs rotational operation at a slow speed;
In particular, the present invention relates to a slowing device that gently opens and closes ashtrays installed in vehicles such as automobiles, lids of console boxes, doors of office equipment such as copying machines, and doors of furniture.

[Prior Art] A slowing device is used for the purpose of slowing down the rotational movement of a lid body, which rotates to open and close a body of a container, for example. FIG. 6 shows a container in which a conventional slowing device is integrally assembled. A container is constituted by a main body 71 and a lid 73 that rotates around a hinge shaft 72 to open and close. The slowing device includes an interlocking gear 74 rotatably attached to a fixed shaft 78 fixed to the main body 71, and an arc-shaped driven gear 75 meshing with the interlocking gear 74 attached to the lid 73.
It consists of a spring (torsion spring) 76 that is wound around the hinge shaft 72 and urges the lid 73 in the opening direction, and viscous grease (not shown) sealed between the interlocking gear 74 and the fixed shaft 78. ing. Further, a lock member 77 is attached to the main body 71 to maintain the closed state of the lid body 73 against the biasing force of the spring 76.

Next, the operation of this container will be explained.

When the lid body 73 is rotated from the open state to the closing direction, the lid body 73
Torque that forces the opening direction is stored in the spring 76. Therefore, when the lock member 77 is released, the lid body 73 rotates in the opening direction. The opening movement of the lid body 73 at this time is controlled by the driven gear 75.
This is done while rotating the interlocking gear 74, but due to the viscosity of the viscous grease sealed between the interlocking gear 74 and the fixed shaft 78, the lid 7
3 rotates slowly.

[Problems to be Solved by the Invention] However, the conventional device requires a driven gear 74 and an interlocking gear 75, and in particular, the driven gear 74 needs to be provided so as to cover the entire rotation range of the lid 73, which requires less installation space. is large, which limits the degree of freedom in design. Also,
In addition to these gears 74, 75, it is necessary to provide a spring 76, which not only requires a large number of parts, but also makes assembly difficult because these parts need to be provided at each location.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a practical slowing device that does not require a large installation space and is easy to assemble.

[Means for Solving the Problems] In the present invention, viscous grease is sealed between two members that rotate relative to each other, and a spring whose both ends are hooked to the two members is assembled and integrated. A guide slit having a width smaller than the wire diameter of the spring and a hook socket communicating with the guide slit are formed in the two members, and the end of the spring is inserted from the guide slit into the hook slit and is latched to prevent it from coming off. It may be a structure. This slowing device is assembled to an external member by locking both ends of the spring to a fixed side and a movable side of the external member to which it is applied.

[Function] In the above configuration, when one end of the spring is moved, the two parts rotate relative to each other.
When one of the members rotates and releases its force on one end of the spring, the torque of the spring causes the other member to rotate in the opposite direction. During this rotation in the forward and reverse directions, the viscous grease acts and the rotation is performed slowly.

In addition, when assembling to external members, the movable member can be made to open or close depending on the locking position of the spring end to the movable member of the external member, or the movable member can be opened or closed. It can also have both closing and closing functions.

[Example] An embodiment of the present invention is shown in FIGS. 1 to 3.

The slowing device 1 includes one member 2 (hereinafter referred to as
(referred to as a shaft member) and the other member 3 having cylindrical portions 3a and 3b.
(hereinafter referred to as a cylindrical member) are assembled, and a torsion spring 4 is fitted onto these two members. Shaft member 2
The cylindrical member 3 is made of lightweight material such as plastic or aluminum alloy or other material and is molded into the shape shown in FIG. The shaft member 2 has a shaft portion 2a formed in the center, and a ring portion 2b concentrically formed on the outside of the shaft portion 2a. On the other hand, the cylindrical member has concentric cylindrical portions 3a and 3b.
are formed, and these cylindrical parts 3a and 3b form the shaft part 2a of the shaft member 2.
and the ring portion 2b are mutually inserted and assembled. As a result, the two members 2 and 3 are assembled so as to rotate relative to each other. Since these two members themselves do not require any strength, they can be molded as thin as possible, and the assembled body of the two members can be made thinner and the whole can be molded compactly. can. In the figure, reference numeral 5 denotes a washer that is fitted onto the shaft portion 2a of the shaft member 2 to prevent the two members 2.3 from coming off. When assembling the shaft member 2 and the cylinder member 3, the shaft part 2a, the ring part 2b and the cylinder part 3 are
A predetermined gap is formed between a and 3b, and viscous grease 6 is sealed in this gap. In such a structure, when the two members 2.3 rotate relative to each other, a shearing force acts on the viscous grease, resulting in a slow rotational movement.

The torsion spring 4 has a coil portion fitted over the assembled two members 2.3, and both ends 4a and 4b are drawn out from the two members 2.3 in opposite directions, respectively, as shown in FIG. Both ends 4a and 4b of this spring 4 each have two members 2.
When the spring 4 at one or both ends is rotated in the tightening direction, the rotational force is transmitted and the two members 2 and 3 rotate relative to each other as the spring 4 is rotated. It looks like this. In this embodiment, this latching consists of two members 2.3.
An engaging piece 7 is formed on the outer end portion of the spring 4.
This is done by piercing the end of the Next, this hanging structure will be explained with reference to FIG. Each engagement piece 7 of two members 2.3
A tapered guide slit 8 communicating with the outside and a hook slit 9 communicating with the guide slit 8 are formed in the guide slit 8, and the guide slit 8 has a slit width smaller than the wire diameter of the spring 4. This type of latching structure is achieved by pushing the latching spring wire of the spring 4 into the hook slit 9 from the guide slit 8, and does not come out of the narrow guide slit 8 after being pushed into the hook wrist 9. There is an advantage that the work of latching both ends of the spring 4 is easy and that it is securely prevented from coming off after latching.

Note that this is not limited to this type of hanging. For example, a pin part may be integrally formed on the two members 2.3, and both ends of the spring may be wrapped around the pin part, or a caulking piece or the like may be used to secure both ends of the spring. may be caulked and hooked to two members, and is not particularly limited.

Next, the usage pattern of this device will be explained with reference to FIGS. 4 and 5.

These figures show an example of application to an external member 10 consisting of a container-shaped main body 11 and a lid 12 attached to the main body 11 so as to be openable and closable.
It rotates around the center to open and close. Further, a hook hole 15 is formed in the side piece 14 of the lid 12, and a hook bin 16 is formed in the main body 11.

Both ends 4a and 4b of the spring 4 are hooked into these hook holes 15 and hook bins 16, and the spring 4 is attached to external materials by this hooking.

In the application example shown in FIG. 4, the hook hole 15 is formed to be located on the left side of the line connecting the hinge shaft 13 and the hook bin 16 when the lid body 12 is in the closed state.

One end 4a of the spring 4 is hooked to the hook bin 16. Therefore, one end 4a of the spring 4 is a fixed end, and the other end 4b is a rotating end that rotates around the hinge shaft 13. When the rotating end 4b is on the left side of the straight line connecting the hinge shaft 13 and the fixed end 4a (FIG. 4(a)), a spring force acts clockwise around the hinge shaft 13.
The lid body 12 maintains a closed state in the AB range. When the lid 12 is opened from this state, the rotating end 4b of the spring 4 rotates in the direction of the half-hour hand around the hinge shaft 13, and moves to the right of the straight line connecting the hinge shaft 13 and the fixed end 4a ( (b)), in this state, the lid body 12 is biased in the opening direction, so that the lid body 12 maintains the open state in the BC range. That is, in this application example, the slowing device is
2 in the closing direction and the opening direction, and
When the lid body 12 is in the closed state, that state is maintained, and when it is in the open state, that state is maintained. And these lids 1
Since the two members 2 and 3 rotate relative to each other in both the closing and opening operations, gentle operation can be ensured.

In the application example shown in FIG. 5, the hook hole 15 is formed to be located on the right side of the straight line connecting the hinge shaft 13 and the hook bottle 16 in both the closed state and the open state of the lid body 12. As a result, the spring 4 of the slowing device l is connected to the lid body 12.
is always energized in the direction of opening. Therefore, in order to maintain the closed state of the lid body 12, a locking member 20 is attached to the external member. In this application example, when the lock member 2o is unlocked, the lid body 12 automatically and slowly opens. That is, the slowing device 1 performs not only a slowing motion but also a biasing action to automatically open the lid body 12.

[Effects of the Invention] As explained above, the present invention is capable of reducing the thickness of an assembled body of two members to make the whole compact, and also provides a two-member co-rotation system in which viscous grease is sealed. In addition, since a spring for performing this relative rotation is assembled, the installation space is small, the degree of freedom in design can be expanded, and it is easy to assemble to external materials. In addition, by changing the hooking position of the end of the spring, the external members can be opened or closed, allowing for a wide range of applications.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing one embodiment of the present invention, FIGS. 2 and 3 are a plan view and a side view thereof, FIG. 4 is a side view showing an example of application to external materials, and FIG. FIG. 6 is a side view showing another application example, and FIG. 6 is a side view showing a conventional example. 1... Slowing device, 2.3... Member, 4... Spring,
4a, 4b... end of spring, 6... viscous grease,
10... External materials, 13... Hinge shaft (rotation center axis). No. 10 Man 5 Bacteria (OL) Irosu (CL)

Claims (3)

[Claims] (1) It is characterized by comprising two members that rotate relative to each other, viscous grease sealed between the two members, and a spring whose both ends are respectively hooked to the two members and apply a relative rotational force to the two members. A slowing device. (2) A guide slit having a width smaller than the wire diameter of the spring and a hook slit communicating with the guide slit are formed in the two members, and the end of the spring is inserted from the guide slit into the hook slit to prevent it from coming off. The slowing device according to claim (1), which has a structure in which it is latched. (3) The spring has one end as a fixed end and the other end as a rotating end that rotates around a predetermined rotational axis of an external member. The slowing device described.