JPH06115388A - Moderation granting structure - Google Patents

Abstract

PURPOSE:To provide a moderation granting mechanism with less abnormal sound capable of installing without special processing or tools and capable of obtaining strong elasticity. CONSTITUTION:On a device consisting of a fixed member 1, bearing bodies 14 confronting with each other left and right fixed on the fixed member 1 and a revolving member 2 axially fixed free to revolve by a shaft 8 in the lateral direction provided between the left and right bearing bodies 14, between the bearing bodies 14 and the revolving member 2, a moderation granting member 3 having projection parts 11, 11 elastically projected in a revolving locus of the revolving member 2, elastically escaping outward by being pushed to the side surface of the revolving member when the revolving member 2 revolves and elastically returning again into the revolving locus when the revolving member 2 passes through is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for imparting moderation to the rotation of a rotating member that rotates with respect to a fixed member.

[0002]

2. Description of the Related Art Conventionally, there is no publicly known publication, but a rotary member is axially fixed to a fixed member by a horizontal shaft, and a spring beyond a dead center is provided between the rotary member and the fixed member. It is well known to rotate one side with a moderation on one side and the other side.

[0003]

In the above-mentioned known example, since the spring over the dead center is provided, it is troublesome to mount the spring, and the spring over the dead center requires a large volume.

[0004]

An object of the present invention is to provide a moderation imparting structure which is easy to mount and does not require a large space.

[0005]

Therefore, according to the present invention, a fixing member 1, a bearing body 14 which is fixed to the fixing member 1 and is opposed to each other in the left-right direction, and a shaft in the left-right direction provided between the left and right bearing bodies 14 are provided. And a rotating member 2 that is rotatably attached by a shaft 8 between the bearing body 14 and the rotating member 2 in a rotating locus of the rotating member 2. When the rotating member 2 is rotated, it is pushed by the side surface of the rotating member 2 and elastically escapes outward, and when the rotating member 2 passes by, the protruding portion elastically returns to the rotation trajectory again. 11, 11
This is a moderation imparting structure in which a moderation imparting member 3 having Further, in the present invention, in the above, the rotating member 2 has a moderation imparting structure fixed to the folding sheet 20 side. Further, in the present invention, in the above, the moderation imparting member 3 has a moderation imparting structure made of synthetic resin. The present invention also provides the above-mentioned protrusion 1 in the above.
Reference numeral 1 denotes a moderation imparting structure in which a slit 28 is provided and is divided into a plurality of parts in the rotating direction of the rotating member 2.

[0006]

Embodiments of the present invention will be described with reference to the drawings.
Is a fixed member, 2 is a rotary member, and the rotary member 2 is rotatably attached to the fixed member 1 via a moderation imparting member 3. The moderation imparting member 3 is formed of an elastic member such as synthetic resin and has a pair of left and right walls 4 and 4. One of the left and right walls 4 and 4 is formed at a free end but the other is connected by a connecting wall 5. Insertion holes 6, 6 are formed in the left and right walls 4, 4, and the through holes 7 of the rotating member 2 are aligned with the insertion holes 6 and are pivotally attached by a shaft 8. Reference numeral 9 denotes one side in the rotation direction of the rotation member 2 about the shaft 8 and 10 denotes the other side in the rotation direction of the rotation member 2 about the shaft 8 in the left and right walls 4. Between the one side 9 and the other side 10 of the free ends of 4,
A projecting portion 1 that elastically projects into the turning path of the turning member 2.
1 and 11 are formed.

Therefore, the moderation imparting member 3 is the rotating member 2
The bracket 13 which is fixed to the fixing member 1 for mounting is attached beforehand, and the rotating member 2 is attached to the bracket 13 by the shaft 8. The bracket 13 has only to have the bearing bodies 14 and 14 for fixing the bracket 13 to the fixing member 1 and for mounting the shaft 8, but in the present embodiment, the base portions of the bearing bodies 14 and 14 are provided. It is also expected that the connecting plate 15 is connected by the connecting plate 15 to secure the strength and the connecting plate 15 is restricted from rotating the rotating member 2.

Engaging grooves 16, 1 are formed in the bearings 14, 14.
6. Mounting holes 17 having 6 are formed, and each mounting hole 17 is formed.
The cylindrical portions 19 having the engaging projections 18 provided on the outer surfaces of the left and right walls 4 of the moderation imparting member 3 are fitted into the respective cylinders.

5 to 6 show an embodiment applied to the folding seat 20, 21 is a seat and 22 is a seat 2.
1, a backrest seat rotatably attached to the seat 1, 23 a frame (corresponding to the fixing member 1) of the seat seat 21, 24 a front leg portion (corresponding to the rotating member 2) provided on the front side of the frame 23, 25 Is a rear leg portion (corresponding to the rotating member 2) provided at the rear portion of the frame 23, and the folding seat 20 tilts the backrest seat 22 to the front side and then tilts the entire front part around the lower part of the front leg portion 24. Next, the rear leg 25 is folded, but between the lower portion of the front leg 24 (corresponding to the rotating member 2) and the floor 26 (corresponding to the fixing member 1) and the rear leg 25 (rotating member). Two
(Corresponding to 3) and the frame 23 (corresponding to the fixing member 1), the moderation imparting member 3 is interposed. 27 is an end face of the base of the rear leg 25.

FIG. 7 shows a second embodiment, in which the protrusion 11 is formed.
A slit 28 is formed in each of the protrusions 11 to divide the protrusion 11 into a plurality of parts in the rotating direction of the rotating member 2. The moderation imparting member 3 can be attached to any shaft-attached portion, and the left, right, front, and rear directions in the above description are convenient and are not limited thereto, and in order to facilitate understanding, in the drawings. Although the same member is denoted by a plurality of reference numerals, the present invention is not limited to these examples.

[0011]

[Operation] Next, the operation will be described. Since the rotating member 2 is attached to the fixed member 1 via the moderation imparting member 3, the rotating member 2
Rotates about the axis of the shaft 8 between the one side 9 and the other side 10. The protrusions 11 formed on the left and right walls 4 and 4 of the moderation imparting member 3 are included in the rotation trajectory of the rotating member 2. Since 11 is protruding, the side surface of the rotating member 2 elastically spreads the protruding portions 11, 11 and passes between the protruding portions 11, 11 to complete the rotation. Therefore, the rotation of the rotation member 2 is started when a force larger than the protrusions 11 and 11 is spread, and when the narrowest portion between the protrusions 11 and 11 is passed, the protrusions 11 and 11 are not moved. The elastic restoring force causes the elastic force to return to the original position, which causes a slight movement, and the change in the operating load gives the operator a sense of moderation.

Since the protrusion 11 is located between the one side 9 and the other side 10 of the bracket 13, the one side 9
Then, the downward rotation of the rotating member 2 is regulated by the protrusion 11 of the moderation imparting member 3 and becomes stable, and the protrusion 11 on the other side 10
It is held by the end of the connecting plate 15 of the bracket 13 and is stable. Therefore, when no force is exerted on the protrusions 11 and more than they are spread, the stopper also elastically retains the rotating member 2 at the respective positions.

5 to 6 show the folding sheet 20.
In the embodiment applied to, the backrest seat 22 is tilted forward, and then the whole is tilted forward around the lower part of the front leg 24.
The lower part of the front leg portion 24 corresponds to the rotating member 2, and the floor 26
Corresponds to the fixing member 1, and when the lower portion of the front leg portion 24 pivots forward with respect to the floor 26 about the axis 8 and passes through the protruding portion 11 of the moderation imparting member 3, the operation load is reduced and the moderation imparting member is reduced. The seat sheet 21 is folded in an upright state by the elastic force of the protruding portion 3 of 3 to return to its original state, and this state is maintained.

Next, the rear leg portion 25 is folded, but the rear leg portion 2
5 corresponds to the rotating member 2, and the frame 2 of the seat 21
3 corresponds to the fixing member 1, and the rear leg portion 25 is connected to the frame 23.
When rotated about the axis 8 with respect to the rear leg 25, the rear leg 25 is restricted from rotating between the stored one side 9 and the projected use state by the protrusion 11 of the moderation imparting member 3. It is stable at the position, and the above-described moderation feeling is imparted by the elasticity of the protrusion 11 of the moderation imparting member 3 during rotation.

[0015]

According to the present invention, the fixing member 1, the bearing body 14 fixed to the fixing member 1 and facing left and right, and the left and right bearing bodies 14 are provided.
And a rotating member 2 which is provided between the two and is rotatably attached to a shaft 8 in the left-right direction.
4 and the rotating member 2 are elastically projected in the rotation trajectory of the rotating member 2, and when the rotating member 2 rotates, it is pushed by the side surface of the rotating member 2. A moderation imparting structure provided with a moderation imparting member 3 having projecting portions 11, 11 that elastically escape outward and the elastic member is elastically returned to the rotational trajectory again when the rotating member 2 passes by, and in the above, Since the moving member 2 has a moderation imparting structure that is fixed to the folding sheet 20, the moderation imparting member 3 has the bracket 13 in advance.
Fixed to the fixing member 1 (floor 26 or seat 2
1) Rotating member 2 (front leg 24 or rear leg 25)
There is no change in the process of mounting the shaft 8 by the shaft 8, and not only the mounting and assembling can be performed very easily, but also the space for mounting the moderation imparting member 3 is not required other than the space for mounting the bracket 13. Therefore, it is possible to save space, reduce the number of parts, reduce the number of assembly steps, reduce the weight, and reduce the cost. Further, since the moderation imparting member 3 has a moderation imparting structure made of synthetic resin, generation of abnormal noise is prevented. Further, since the protrusion 11 is provided with the slit 28 and has a moderation imparting structure divided into a plurality of parts in the rotating direction of the rotating member 2, the rotating member 2 can be smoothly rotated.

[Brief description of drawings]

FIG. 1 is an assembled perspective view.

FIG. 2 is a side view.

FIG. 3 is a front view.

FIG. 4 is a transverse bottom view.

FIG. 5 is a side view.

FIG. 6 is a perspective view of a frame.

FIG. 7 is a second embodiment diagram.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Fixed member, 2 ... Rotation member, 3 ... Moderation imparting member, 4 ...
Left and right walls, 5 ... connecting wall, 6 ... insertion hole, 7 ... through hole, 8 ... shaft,
9 ... One side, 10 ... Other side, 11 ... Projection part, 13 ... Bracket, 14 ... Bearing body, 15 ... Connecting plate, 16 ... Engagement groove,
17 ... Mounting hole, 18 ... Engagement protrusion, 19 ... Cylindrical part, 20 ... Folding seat, 21 ... Seat, 22 ... Back seat, 2
3 ... Frame, 24 ... Front leg, 25 ... Rear leg, 26
... floor, 27 ... end faces 27, 28 ... slits.

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] November 13, 1992

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 1]

[Figure 3]

[Figure 4]

[Fig. 2]

[Figure 5]

[Figure 6]

[Figure 7]

Claims (4)

[Claims] 1. A fixing member 1, a bearing body 14 which is fixed to the fixing member 1 and which is opposed to the left and right, and a left and right bearing body 14 which is rotatably attached by a shaft 8 in the left and right direction. And a rotating member 2 which is elastically projecting into the rotation trajectory of the rotating member 2 between the bearing body 14 and the rotating member 2. When rotated, it is pushed by the side surface of the rotating member 2 and elastically escapes outward, and when the rotating member 2 passes by, the moderation imparting member 3 having projecting portions 11, 11 that elastically returns to the rotational trajectory again. A moderation imparting structure provided with. 2. The moderation imparting structure according to claim 1, wherein the rotating member 2 is fixed to the folding sheet 20 side. 3. The moderation imparting member 3 according to claim 1.
Is a moderation-imparting structure made of synthetic resin. 4. The moderation imparting structure according to claim 1, wherein the projecting portion 11 is provided with a slit 28 and is divided into a plurality of parts in the rotating direction of the rotating member 2.