JP3456614B2 - Rotary damper - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary damper for braking the rotation of a rotating body having a rotating gear that meshes with a rack or a gear by viscous resistance of viscous fluid.

[0002]

2. Description of the Related Art As an example of the conventional rotary damper described above, there are shown a perspective view and a sectional view in FIGS. 6 (a) and 6 (b). Note that FIG. 6B is a sectional view taken along line XX of FIG. In FIG. 6, reference numeral 1 denotes a damper body, which is a cylindrical case 2 having a bottom and made of synthetic resin.
A cap 3 formed of a synthetic resin to close the opening of the case 2, a viscous fluid 4 such as silicone oil or grease filled in a gap formed between the case 2 and the cap 3, and a synthetic resin The rotary shaft 5 and the rotary gear 6 formed of synthetic resin.

In the case 2 described above, a bearing portion 2p protruding toward the opening side is provided at the center of the inner surface of the bottom portion, and a step portion 2s is provided on the inner circumference of the peripheral wall, and a step portion 2s is provided.
A circular groove 2d located closer to the opening than is provided. The cap 3 has a disk-like shape having an outer diameter substantially matching the inner diameter of the opening of the case 2, a circular shaft hole 3h is provided in the center, and a circumferential rib 3r fitted in the groove 2d is provided on the circumferential surface. When the rib 3r is provided and fits in the groove 2d, it comes into contact with the step 2s.

Further, the rotary shaft 5 has a bearing portion 2p at the bottom.
Is provided rotatably with a recess 5d, and a rotor 5r is provided on the outer periphery of the bottom. The portion of the rotary shaft 5 protruding from the cap 3 is formed in an oval shape. Next, the rotary gear 6 has an oval-shaped fitting hole 6h into which the portion of the rotary shaft 5 projecting from the cap 3 is press fitted.
Is provided in the center.

Reference numeral 7 denotes a first mounting plate having a mounting plane orthogonal to the rotating shaft 5, which is integrally molded on both sides of the case 2 in the diametrical direction, and mounting holes 7a and 7b are provided so as to sandwich the case 2. There is. Reference numeral 8 denotes a second mounting plate having a mounting plane orthogonal to the first mounting plate 7, and one end portion of the first mounting plate 7 is integrally molded with the case 2 and the first mounting plate 7 and has a mounting hole 8
a, 8b, 8c are provided.

Reference numerals 9 and 10 denote ribs, which are integrally formed with the case 2 and the first and second mounting plates 7 and 8 to reinforce the first mounting plate 7 and the second mounting plate 8. The fixed body includes a case 2 and a cap 3. The rotating body is composed of a rotating shaft 5 and a rotating gear 6.

The rotary damper shown in FIG. 6 has mounting holes 7a and 7b of the first mounting plate 7 or mounting holes 8a of the second mounting plate 8.
8c to the screw hole of the member to be attached,
Alternatively, the second mounting plate 8 can be mounted in two patterns by screwing it to the mounted member. In addition, such a rotary damper is disclosed in, for example, Japanese Utility Model Publication No. 4-25441.
It is disclosed in the publication.

[0008]

The conventional rotary damper is constructed so that it can be mounted in two patterns by utilizing the first mounting plate 7 or the second mounting plate 8. However, since the dimensional error of the screw holes provided in the mounted member is absorbed by the mounting holes 7b and 8c formed in the oval shape, the dimensional error of the screw holes cannot be absorbed by the mounting holes 7b and 8c, or If the size of the hole is different, the rotary damper cannot be attached to the attached member.

The present invention has been made to solve the above-mentioned inconvenience, and can be mounted on a member to be mounted by absorbing a dimensional error of a mounting insertion hole or a screw hole, and can be mounted in a predetermined range of another specification. It is intended to provide a rotary damper that can be mounted in correspondence with a mounting insertion hole or a screw hole provided.

[0010]

Means for Solving the Problems] rotary damper of the present invention includes a damper body for braking the rotation of the rotating body by the viscous resistance of the filled viscous fluid, one end fixed to the fixed body of the damper body, other A member that can maintain its bent state, with its free end protruding from the damper body.
A plurality of mounting members configured ,
The free end side is parallel to the rotation axis of the damper body and opposite to the fixed body
After bending it to the side and inserting it into the mounting insertion hole of the mounted member,
Rotate the free end side of multiple mounting members protruding from the mounted member.
By further bending in a direction orthogonal to the moving axis , the damper body is attached to the attached member by the attaching member. In addition, another rotary damper of the present invention is
The rotation of the rotating body is controlled by the viscous resistance of the filled viscous fluid.
The moving damper body and the fixed body of this damper body
One end is fixed and the other end projects from the damper body,
The first mounting made of a member that can maintain the bent state
One end is rotatably fixed to the member and the fixed body, and the other end
Can be kept bent, protruding from the damper body
And a second mounting member composed of a movable member,
And the free end side of the second mounting member with the rotation axis of the damper body.
The first and second parts protruding from the mounted member after being bent in the row to the side opposite to the fixed body and inserted into the mounting insertion hole of the mounted member
By further folding the free end of the second mounting member in a direction perpendicular to the rotation axis, is attached shall at mounting member damper body relative to the mounting member. In addition, this departure
Ming's other rotary damper has a viscous resistance of the filled viscous fluid.
The damper body that damps the rotation of the rotating body by
A first mounting member having one end fixed to a fixed body of the damper body, the other end protruding from the damper body having a mounting means, and one end rotatably mounted to the fixed body,
A second mounting member having mounting means provided at the other end protruding from the damper body, and the damper with respect to the mounted member
For attaching the main body with the first and second attachment members
It

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 (a) and 1 (b) are a plan view and a front view showing a first embodiment of a rotary damper of the present invention,
2 (a), (b), (c) and (d) are explanatory views showing a mounting process of the rotary damper of the first embodiment shown in FIG. 1, and are the same as or corresponding to those in FIG. Is attached and the description is omitted.

In FIGS. 1 and 2, reference numeral D denotes a rotary damper, which is composed of the above-mentioned damper body 1 and a thin metal plate 11 attached to the damper body 1 and having a plurality of mounting members integrated therein. . The case 2 of the damper body 1 described above has a plurality of bosses 2 diametrically formed on the outer surface of the bottom.
b is integrally provided. In addition, the metal thin plate 11 is
It is possible to maintain the bent state, and two mounting pieces 11a as a mounting member are linearly connected to each other on both sides of the case 2 so that the free ends 11e are projected, and a plurality of bosses 2b are provided.
Is fixed to the bottom of the case 2 by thermally deforming the tip portion of the boss 2b inserted through the insertion hole 11h provided corresponding to the above. Reference numeral 21 denotes a panel as a member to be mounted, and mounting insertion holes 21h into which the free end 11e side of the metal thin plate 11 is inserted are provided facing each other.

Next, the mounting of the rotary damper on the panel will be described. First, as shown in FIG. 2A, each free end 11e side of the thin metal plate 11 is vertically bent to the side opposite to the case 2 in accordance with the intervals of the mounting insertion holes 21h provided in the panel 21. And each free end 11e bent vertically
Each side is inserted into the mounting insertion hole 21h, and the boss 2b or the metal thin plate 11 is attached to the panel 21 as shown in FIG. 2 (b).
Abut.

Next, as shown in FIG. 2 (c) or FIG. 2 (d), the metal thin plate 11 is bent by bending so that the free ends 11e penetrating the panel 21 are brought into contact with the panel 21. Since it is fixed to the panel 21, the damper body 1 can be attached to the panel 21.

As described above, according to the first embodiment of the present invention, the free end 11e side of the metal thin plate 11 (two mounting pieces 11a) is bent and the mounting insertion hole 21 of the panel 21 is bent.
Each free end 11 protruding from the panel 21 after being inserted into h
By further bending the e side, the damper body 1 can be attached to the panel 21 with the thin metal plate 11. Therefore, by adjusting the first bending position on the free end 11e side, the dimensional error of the attachment insertion hole 21h can be adjusted. The rotary damper D can be attached to the panel 21 by absorbing the above, and the rotary damper D can also be attached corresponding to the attachment insertion hole 21h provided in another specification of a predetermined range.

The panel 21 is adjusted by adjusting the initial bending position of the thin metal plate 11 on the side of each free end 11e.
The mounting position of the rotary damper D with respect to can be selected within a predetermined range. Further, the mounting insertion hole 2 is attached to the panel 21.
Since it is only necessary to form 1h, the panel 21 can be easily processed. Since the thin metal plate 11 may be bent by using a simple jig or the like, the rotary damper D can be easily attached to the panel 21 with a small number of steps.

3 (a) and 3 (b) are a plan view and a front view showing a second embodiment of the rotary damper of the present invention,
The same or corresponding parts as those in FIGS. 1, 2 and 6 are designated by the same reference numerals and the description thereof will be omitted. In FIG. 3, 12A, 12
B shows the 1st and 2nd attachment members comprised with the metal thin plate, and can maintain a bent state. And
The first mounting member 12A has a plurality of insertion holes 1 provided at one end.
It is fixed to the bottom of the case 2 by thermally deforming the tip portion of the boss 2b of the case 2 inserted through 2h.

One of the bosses 2b is provided at the center of the case 2, that is, at a position corresponding to the bearing 2p, and the other bosses 2b are provided in the radial direction. In addition, the second mounting member 12B has a through hole 12 provided at one end.
By thermally deforming the tip portion of the boss 2b provided at the center of the case 2 inserted through h, the boss 2b is rotatably attached to the case 2.

According to the second embodiment of the present invention shown in FIG. 3, when the second mounting member 12B is rotated with respect to the case 2 and positioned on the extension line of the first mounting member 12A,
Since it is the same as the embodiment, the same effect as the first embodiment can be obtained. Further, since the second mounting member 12B can be rotated with respect to the case 2, the two mounting insertion holes 21h provided in the panel 21 with respect to the mounting position of the damper body 1 are located on the diameter of the damper body 1. Without doing so, the rotary damper D can be attached to a desired position of the panel 21.

FIGS. 4A and 4B are a plan view and a front view showing a third embodiment of the rotary damper of the present invention,
The same or corresponding parts as those in FIGS. 1 to 3 and 6 are designated by the same reference numerals and the description thereof will be omitted. In FIG. 4, 13A, 13
B shows the 1st and 2nd attachment member comprised with the metal plate,
The first mounting member 13A has a plurality of insertion holes 1 provided at one end.
It is fixed to the bottom of the case 2 by thermally deforming the tip portion of the boss 2b of the case 2 inserted through 3h.

One of the bosses 2b is provided at the center of the case 2, that is, at a position corresponding to the bearing 2p, and the other bosses 2b are provided in the radial direction. In addition, the second mounting member 13B has a through hole 13 provided at one end.
By thermally deforming the tip portion of the boss 2b provided at the center of the case 2 inserted through h, the boss 2b is rotatably attached to the case 2.

According to the third embodiment of the present invention shown in FIG. 4, since the second mounting member 13B can be rotated with respect to the case 2, the panel 21 is attached to the panel 21 with respect to the mounting position of the damper body 1. Even if the two screw holes provided are not located on the diameter of the damper body 1, the rotary damper D is installed on the panel 21.
Can be mounted at any desired position. Further, by rotating the second mounting member 13B with respect to the case 2,
Since the distance between the mounting holes 13a can be adjusted, the mounting insertion hole 21
The rotary damper D can be attached to the panel 21 by absorbing the dimensional error of h, and the rotary damper D can be fitted to the mounting insertion hole 21h provided in another specification of a predetermined range.
Can be attached to the panel 21.

FIG. 5 is a front view in which another example of the damper main body in the rotary damper of the present invention is partially broken along a line corresponding to the line YY in FIG. 1, and FIGS. The same or corresponding parts will be denoted by the same reference symbols and description thereof will be omitted.
The rotary damper D shown in FIG. 5 corresponds to the first embodiment shown in FIG. 1, and is formed so that the teeth of the rotary gear 6 are located on the outer peripheral portion of the case 2.

In the first embodiment, the two mounting pieces 1
1a is connected linearly to form one, but two mounting pieces 11
a may be a separate body, and the two mounting pieces 11a may not be linear. Further, in the second and third embodiments,
The second mounting members 12B and 13B are rotatably attached to the case 2 by the boss 2b. However, by caulking a metal round bar or the like penetrating the case 2 and the rotation shaft 5, the case 2
The second mounting members 12B and 13B may be rotatably and more firmly mounted.

Further, it goes without saying that the damper body 1 shown in FIG. 5 may be used in the second and third embodiments. Although an example of the attachment member is shown in the first to third embodiments, other attachment members can be attached to the damper body 1 as long as they are displaceable with respect to the damper body 1 and can be attached to the attachment portion of the panel 21. It goes without saying that it may be of the configuration.

[0026]

As described above, according to the present invention, one end portion is fixed to the fixing portion of the damper body, and the damper body is bent.
A plurality of attachment members can be maintained, it is possible to attach the damper body relative to the mounting member, the mounting portion
By adjusting the first bend position on the free end side of the material
Ri absorbs dimensions error of the mounting insertion hole together with Ru can be attached to the rotary damper in the attached member, that in correspondence attaching the rotary damper in the mounting insertion hole provided in a different specification of a predetermined range can Ru.

[0027]

By adjusting the initial bending position of each of the plurality of mounting members on the free end side, the mounting position of the rotary damper with respect to the mounted member can be selected within a predetermined range. since it is only to form the mounting insertion hole, it becomes easy to process of the attachment member, a plurality of attachment members, rather I if Orimagere using such simple jig, a smaller number of steps, the mounting member A rotary damper can be easily attached to.

Further, there are two mounting members, one end of the first mounting member is fixed to the fixed body of the damper main body, and one end of the second mounting member is rotatably mounted to the fixed body of the damper main body. /> because Installing, without a plurality of the mounting insertion hole or a plurality of screw holes provided in the mounting member with respect to the attachment position of the damper body is positioned on the diameter of Dan <br/> par body, the rotary damper It can be attached to a desired position of the attached member.

Further, by rotating the second mounting member with respect to the fixed body of the damper body, the mounting insertion hole or the screw is inserted.
Since it corresponds to the spacing of the scan holes, the mounting insertion hole or a rotary damper to absorb the dimensional errors of the screw holes with Ru it can be attached to the mounting member, the mounting insertion hole or bis provided by another specification of the predetermined range The rotary damper can be attached to the member to be attached so as to correspond to the holes .

[Brief description of drawings]

1A and 1B are a plan view and a front view showing a first embodiment of a rotary damper of the present invention.

2 (a), (b), (c) and (d) are explanatory views showing an attaching process of the rotary damper of the first embodiment shown in FIG.

3 (a) and 3 (b) are a plan view and a front view showing a second embodiment of the rotary damper of the present invention.

4 (a) and 4 (b) are a plan view and a front view showing a third embodiment of the rotary damper of the present invention.

FIG. 5 is a partially cutaway front view showing another example of the damper main body in the rotary damper of the present invention.

6A and 6B are a perspective view and a sectional view showing an example of a conventional rotary damper.

[Explanation of symbols]

D rotary damper 1 damper body 2 cases 2p bearing 2s step 2d groove 2b boss 3 caps 3h shaft hole 3r rib 4 Viscous fluid 5 rotation axis 5d recess 5r rotor part 6 rotating gears 6h fitting hole 11 thin metal plate 11a mounting piece 11e Free end 11h insertion hole 12A First mounting member 12B Second mounting member 12e Free end 12h insertion hole 13A First mounting member 13B Second mounting member 13h insertion hole 13a Mounting hole 21 panels 21h Mounting insertion hole

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References Actual flat 6-6778 (JP, U) Actual open 48-40579 (JP, U) Actual open 49-50750 (JP, U) Actual public 46- 18767 (JP, Y1) (58) Fields surveyed (Int.Cl. ⁷ , DB name) F16F 9/00-9/58 F16B 4/00-5/12

Claims (3)

(57) [Claims] 1. A damper body for braking the rotation of a rotating body by viscous resistance of a filled viscous fluid, one end of which is fixed to a fixed body of the damper body, and the other end of which is fixed.
The free end protruding from the damper body ,
A plurality of mounting members configured by members that can maintain the bent state, and the free end side of the plurality of mounting members is connected to the rotation of the damper body.
Bend to the side opposite to the fixed body parallel to the moving axis
After inserting into the attachment insertion hole of the attached member, from the attached member
The free end side of the plurality of protruding mounting members is referred to as the rotation shaft.
A rotary damper characterized in that the damper main body is attached to the attached member by the attaching member by further bending in a direction orthogonal to each other. 2. By viscous resistance of a viscous fluid filled
The damper body that damps the rotation of the rotating body, and one end is fixed to the fixed body of this damper body , and the other end
A first mounting member that is formed of a member that can be maintained in a bent state and that protrudes from the damper body ; one end is rotatably fixed to the fixed body, and the other end is front.
Can be maintained in a bent state, protruding from the damper body
And a second mounting member formed of an effective member, and the free end sides of the first and second mounting members are provided with the damper.
After bending to the side opposite to the fixed body parallel to the rotation axis of the main body and inserting into the attachment insertion hole of the attached member, the free end sides of the first and second attaching members protruding from the attached member are attached. The rotary damper, wherein the damper body is attached to the attached member by the attaching member by further bending in a direction orthogonal to the rotation axis . 3. By viscous resistance of the filled viscous fluid
A damper body for braking the rotation of the rotating body, one end fixed to the fixed body of the damper body, a first mounting member attachment means provided on the other end projecting from the damper body, said fixed body one end pivotally mounted, wherein a second mounting member attaching means provided on the other end projecting from the damper body, the first and the damper body relative to the mounting member
A rotary damper characterized by being attached by a second attaching member .