JP2002168041A - Sash sheave decelerating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a sash sheave decelerating device having a simple structure for decelerating a moving velocity of a sliding door. SOLUTION: The sash sheave decelerating device includes a mounting member (4) at least having a vertical plate (42) and a supporting plate (43) fixed on the upper part of a sliding door (D), a sash sheave (3) forming a gear section (34) coming into contact with an outside wheel body (33) capable of being pivoted on a horizontal main shaft (31) fixed to the vertical plate (42), a case (21) having a cylindrical pan-shaped body (21b) with a circular axial center (21c) projected in the horizontal direction from the central part of the bottom fixed to the supporting plate (43), a rotational section (22) having a rotor (22a) with a circular axial center (22b) projected in the horizontal direction on the opposite side to the axial center (21c) fitted around the axial center (21c) in a rotatable manner, a gear section (24) fixed to the front end of the circular axial center (22b) projected from a cover (23) for sealing the pan-shaped body (21b) and a buffer member (2) containing a viscous fluid filling an inside gap, and the gear sections (24 and 34) are enagaged with each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door pulley reduction device mainly used for a normally heavy sliding door which is attached to an entrance of a hospital, a nursing home, or the like, moves along a rail and closes automatically in an emergency or the like. About.

[0002]

2. Description of the Related Art A movable heavy sliding door can be quickly closed by using a tilting rail or by positively urging a parallel rail with a spring or a weight in a closing direction.

[0003]

In the above-mentioned conventional apparatus,
In hospitals, nursing homes, etc., since the closing speed of the sliding door is high due to the use of springs and weights on the inclined rail or parallel rail, the sick, elderly, disabled, etc. must pass through the entrance quickly during closing. In some cases, it is necessary to adjust the closing speed of the sliding door, because of the fear and fear. To solve this problem, the rail inclination was changed, and the operation of the springs and weights was adjusted using a timer. It was difficult to respond flexibly. The present invention reduces the closing speed of the sliding door, so that the structure is simple and requires only a small space, and the cost is low.
It is an object of the present invention to provide a door wheel deceleration device that operates reliably and can flexibly respond to changes in conditions at an installation site.

[0004]

In order to achieve the above object, according to the first aspect of the present invention, a) at least a vertical plate (42) fixed to an upper portion of a sliding door (D) and a support plate (4).
(3) mounting member (4), and (b) the vertical plate (4).
A door wheel (3) in which a gear portion (34) is formed at an outer peripheral end of an outer ring body (33) rotatable about a horizontal main shaft (31) fixed to 2); and c) the support plate (43) (2) having a cylindrical pot-like body (21b) having a circular axis core (21c) fixed to the bottom and protruding from the center of the bottom surface in the horizontal direction.
1) and a rotor (22a) having a circular shaft core (22b) inserted rotatably around the shaft center (21c) and protruding in the horizontal direction on the opposite side to the shaft center (21c). A rotating part (22) and a lid (2) for sealing the pot-like body (21b).
3) and the circular shaft core (2) protruding from the lid (23).
2b) a gear portion (24) having a distal end fixed to the drive hole (24b), and a buffer member (2) containing a viscous fluid filled in an internal gap, and each of the gear portions (24, 34). Are solved by a door wheel speed reducer in which the rotor (22a) is rotated by the movement of the sliding door (D) and the sliding door (D) can be decelerated by frictional resistance of the viscous fluid. According to the invention of claim 2, a) the mounting member (4)
Has a vertical plate (42) orthogonal to the horizontal plate (41) and a support plate (43). C) The cushioning member (2) is arranged in a horizontal direction opposite to the axis (22b) of the rotor (22a). The shaft center (21b) of the pot-like body (21b) is inserted into the shaft hole (22d)
c) is rotatably inserted, a deformed portion (22c) is continuously provided at the tip of the circular shaft core (22b) of the rotor (22a), and the deformed portion (22c) protruding from the lid (23) is removed. It is preferable that the gear unit (24) is press-fitted into the drive hole (24b) and the gear unit (24) is fixed thereto. According to the third aspect of the present invention, a pair of substantially horseshoe-shaped fixing pieces (2) are provided at substantially symmetrical positions with respect to the pot-like body (21b).
1a), an outer peripheral surface of the pot-like body (21b) is fitted to an R portion of a substantially U-shaped notch (43a) formed in the support plate (43), and the fixing piece (21a) is fixed. It is preferable that the door pulley reduction device according to claim 1 or 2 be attached to the support plate (43) by a tool (44) and fixed to the vertical plate (42).

[0005]

Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a schematic front view showing a state in which an example of the door pulley reduction device of the present invention is attached to a sliding door. FIG.
1 is an assembled perspective view of an example of a door wheel speed reduction device of the present invention. FIG. 3 is a plan view, a front view, and a side view of the door pulley reduction device of FIG. 2. FIG. 4 is an exploded perspective view of the door pulley reduction device of FIG. FIG. 5 is an exploded perspective view of a cushioning member of the door wheel speed reduction device of FIG. In the following description, the door viewed from the front (the front side in FIG. 1) is the front or front side, the opposite side is the rear or back side, and the door is closed when the direction of door movement in an emergency etc. is viewed from the front side to the rear side. The side (direction X) is the downstream side or the door opening side (the side opposite to the direction X) is the upstream side, and each configuration will be described in the use state of the sliding door. Also, for the same configuration, reference numerals and detailed description are partially omitted. FIG.
, A sliding door D composed of a normally heavy movable body is disposed on the upper wall portion B of the entrance A slightly downwardly in the closing direction X by a pair of door wheels mounted on the upper portion on the upstream side and the downstream side. It is rotatably hung on the provided inclined rail C and can be opened and closed. Here, on the upstream side, a door wheel deceleration device 1 of an example of the present invention including the door wheel 3 is provided, and on the downstream side, a door wheel 3 ′ having the same configuration as the door wheel 3 is provided. In the case where a parallel rail is used instead of the inclined rail C and a spring or weight is used, the sliding door D is pulled by its tensile force.
Can be closed.

Referring to FIGS. 2 to 5, a door pulley reduction gear 1 has a shock absorbing member 2, a door pulley 3, and an attachment member 4. Here, the direction of the figure is changed for easy explanation, but FIG.
2 to 4, the left side opposite to the closing direction X is the upstream side, the right side in the closing direction X is the downstream side, and in FIG. 5, the lower side is the front or front side, and the upper side is the rear or back side. Metal or hard plastic is used for each component of the cushioning member 2, the door wheel 3, and the mounting member 4 unless otherwise specified. The door roller 3 has its main shaft 31 fixed to the vertical plate 42 of the mounting member 4 fixed to the frame above the sliding door D,
An outer ring 33 is rotatably mounted on the main shaft 31 through a pair of bearings 32 such as a normal rolling bearing, and a groove 31a into which a retaining ring 35 can be fitted is formed in the outer peripheral surface of the rear end of the main shaft 31. I have. The outer ring body 33 has an engaging groove 33a at the front and rear central portions of the outer peripheral surface, which can be engaged with the tip convex portion of the rail C, and a ring portion 3 at the front side.
3b, a ring portion 33c is formed on the rear side, and a gear portion 34 is formed on the ring portion 33b on the outer peripheral end portion on the front side of the engagement groove 33a.
Is formed, and a flange 3 protruding from the center of the shaft core opening is formed.
Bearing housing holes 33d and 33e are provided before and after 3f, and a pair of bearings 32 can be mounted. The mounting member 4 includes a horizontal plate 41 fixed to the upper frame of the sliding door D, and a horizontal plate 4.
1 has a vertical plate 42 erected in the vertical direction on the front end surface, and a support plate 43 for fixing the cushioning member 2 fixed to the rear surface of the upper end of the vertical plate 42. A pair of stopper holes 41a into which fixing tools such as bolts for fixing to the sliding door D can be inserted are formed, and upper portions on the left and right sides of the vertical plate 42 (in FIG. ) Is provided with a substantially rectangular notch 42a so as not to hinder the mounting of the buffer member 2, and the support plate 43 is fixed to the vertical plate 42 on the other side on the right and left sides (in FIG. The side) is provided with a substantially U-shaped notch 43a to which the cushioning member 2 can be fixed. In the examples of FIGS. 2 to 4, the horizontal plate 41 and the vertical plate 42 are formed as an integral body, but they may be fixed to each other as separate bodies.
And the vertical plate 42 may be directly fixed to the side surface near the upper frame of the sliding door D. The support plate 43 is separate from the vertical plate 42, and fixing holes 43b, 43b are formed at upper and lower ends so as to sandwich the notch 43a so that the buffer member 2 is fixed by fixing tools 44, 44 such as bolts and screws. A fixing hole 43c is formed in a substantially horizontal position with the fixing hole 43b at the lower end.
Notch 4 of vertical plate 42 corresponding to fixing holes 43b, 43c
Immediately below 2a, fixing holes 42b and 42c are formed at substantially horizontal horizontal positions. The support plate 43 and the vertical plate 42 are fixed to each other by a fixing tool 44 with a fixing hole 43b and a fixing hole 42b at a lower end, and a fixing tool 45 to fix a fixing hole 43c at a lower end.
And the fixing holes 42c are inserted into the respective holes.

The cushioning member 2 includes a case 21 and a rotating part 22.
, Lid 23, gear portion 24, viscous fluid (not shown)
And The case 21 has a shaft core 2 protruding in the center in a horizontal direction (in FIG. 5, a vertical direction, but in a use state of a sliding door, a horizontal direction and a horizontal direction).
A cylindrical pot-like body 21b with a bottom plate having a bottom plate 1c, and fixing pieces 21a, 21a projecting in a substantially horseshoe shape vertically vertically symmetrically with respect to the front surface of the pot-like substance 21b.
Fixing tools 44, 44 are provided at the upper and lower ends of the fixing holes 1a, 21a.
Upper and lower fixing holes 21d, 21 for inserting through 3b, 43b
d is drilled, and a slight stepped portion 21e is formed at the mouth of the pot-like body 21b, that is, at the rear end edge. The rotating unit 22
A disk-shaped rotor 22a housed with a clearance on the inner surface of the pot-like body 21b of the case 21, and a shaft core 22b having a circular cross section protruding horizontally at the center of the rear surface of the rotor 22a.
And a case 21 horizontally in the center of the front surface of the rotor 22a.
Of the rotor 2 is fitted around the shaft core 21c.
A shaft hole 22d for rotating the shaft core 2a is provided.
At the rear end of b, a deformed portion 22c having a non-circular cross section is continuously provided. Here, the deformed portion 22c is used to fix the gear portion 24 to a driving hole 24b, which will be described later, by fixing the gear portion 24 to a circular shape using a key and a key groove. However, it is preferable to provide the deformed portion 22c from the viewpoint of assembly or replacement. The lid 23 is
Disc-shaped center hole 23b at the center of which shaft core 22b can slide
Is formed, and the outer peripheral portion 23a is formed with the stepped portion 2 of the case 21.
1e, and is combined with an O-ring 23c that can be attached to the shaft core 22b. As will be described later, the outer peripheral portion 23a and the stepped portion 21e are fixed by welding and the like, and the mouth of the pot-like body 21b is sealed by the O-ring 23c. Is filled with a viscous fluid. As the viscous fluid, for example, silicon oil or the like can be stably used. The gear portion 24 has a tooth portion 24a that can be engaged with the gear portion 34 of the door wheel 3 on the outer peripheral surface, and a drive hole 24b that can be press-fitted in the center portion according to the shape of the deformed portion 22c. Normally, the gear portion 24 has a smaller number of teeth and therefore a smaller pitch circle than the gear portion 34.

Next, the assembling and operation of the door pulley reduction gear 1 will be described. First, in order to assemble the cushioning member 2, FIG.
, The shaft hole 22d of the rotating part 22 is fitted to the shaft core 21c of the case 21 so that the rotor 22a can rotate around the shaft core 21c in the pot-like body 21b. Next, an O-ring 23c is mounted on a shaft core 22b protruding from the rear surface of the rotor 22a, and the shaft core 22b is passed through a center hole 23b of the lid 23 to make the deformed portion 22c protrude.
The opening of the pot 21b is sealed by the O-ring 23c and the fixing of the step 3e of the case 2 to the stepped portion 21e by welding or the like. Here, the rotor 22a, the pot-like body 21b, and the lid 23
The internal gap therebetween is filled with a viscous fluid in advance to form a rotary damper. On the other hand, to assemble the door roller 3, referring to FIG. 5, the main shaft 31 is fixed to the vertical plate 42 of the mounting member 4 in the horizontal front direction, and the main shaft 31 has a bearing 32, a gear portion 34 and an outer ring 33 from the rear side. The shaft cores are inserted in the order of the bearings 32, and the retaining ring 3 is inserted into the protruded rear end groove 31 a of the main shaft 31.
5 and the gear portion 34 and the outer race 33 are integrated with the main shaft 31.
Assembling is completed as it can rotate around. The outer peripheral surface of the pot-like body 21b of the buffer member 2 that has been assembled is
Into the R portion of the notch 43a, the upper and lower fixing holes 21d, 2d
Fixing members 44, 44 are screwed into 1d and the buffer member 2 is mounted on the support plate 43. Then, the rear end of the fixing member 44 is screwed into the fixing holes 42b of the vertical plate 42, and the fixing holes 42c and the fixing holes 43c
Then, the fixing member 45 is screwed together, and the support plate 43 on which the buffer member 2 is mounted is fixed to the vicinity of the notch portion 42a of the vertical plate 42, and the assembling of the door roller reduction device 1 is completed. At this time,
The gear portion 24 of the buffer member 2 is spaced from the shaft center so that the gear portion 34 of the door wheel 3 is normally meshed.

FIG.
As shown in FIG.
And the door wheel 3 'is disposed on the downstream side, and the engaging groove 33a is engaged with the front end of the inclined rail C so that the sliding door D
Is rotatably suspended. When the sliding door D in the open state moves along the rail C and closes automatically in an emergency or the like, the sliding of the engagement groove 33a and the rail C causes the gear portion 34 to rotate from the ring portion 33b, and the gear portion 34 rotates. The rotor 22a of the buffer member 2 is rotated via the part 24. As a result, due to the frictional resistance of the viscous fluid injected into the internal gap between the rotor 22a, the pot-like body 21b, and the lid 23, the moving speed of the sliding door D in the closing direction is reduced and becomes gentle. The closing speed can be adjusted by adjusting the viscosity and filling amount of the viscous fluid that forms the rotary damper, but it is usually easy to prepare different types in advance and match them to the installation site. is there. Therefore, it is possible to flexibly cope with the diversity of the installation site without the need for labor such as adjustment by the rail inclination gradient and adjustment by the timer of the operation of the spring and the weight.

[0010]

According to the door wheel deceleration device of the present invention, it takes time and effort to reduce the moving speed of the sliding door as in the conventional adjustment by the inclination of the rail and the adjustment of the operation of the spring and the weight by the timer. There is no simple structure, only a small space is required, the cost is low, the operation is reliable, and it is possible to flexibly respond to changes in the conditions of the installation site.

[Brief description of the drawings]

FIG. 1 is a schematic front view of an example of a door wheel deceleration device of the present invention attached to a sliding door.

FIG. 2 is an assembled perspective view of an example of the door wheel deceleration device of the present invention.

3A is a plan view, FIG. 3B is a front view, and FIG.

FIG. 4 is an exploded perspective view of the door wheel speed reduction device of FIG.

5 is an exploded perspective view of a cushioning member of the door wheel deceleration device of FIG. 2, (a) an overall view, and (b) an inverted view of a rotating unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door wheel reduction gear 2 Buffer member 21 Case 21a Fixing piece 21b Pan-shaped body 21c, 22b, Shaft core 21d, 42b, 42c, 43b, 43c Fixing hole 21e Stepped part 22 Rotating part 22a Rotor 22c Deformed part 22d Shaft hole 23 Lid 23a Outer peripheral portion 23b Center hole 23c O-ring 24, 34 Gear portion 24a Tooth portion 24b Drive hole 3 Door wheel 31 Main shaft 31a Groove 32 Bearing 33 Outer ring 33a Engagement groove 33b, 33c Ring portion 33d, 33e Storage hole 33f Flange 4 Mounting Member 41 Horizontal plate 41a Stop hole 42 Vertical plate 42a, 43a Notch 43 Support plate 44, 45 Fixture C Slant rail D Sliding door

Claims (3)

[Claims] 1. An attachment member (4) having at least a vertical plate (42) and a support plate (43) fixed to an upper part of a sliding door (D); and (b) fixed to the vertical plate (42). A door wheel (3) in which a gear portion (34) is formed at an outer peripheral end of an outer race body (33) rotatable about a horizontal main shaft (31);
A case (21) having a cylindrical pot-like body (21b) having a circular axis core (21c) fixed to the support plate (43) and projecting horizontally from the bottom center portion; 2
1c) a rotating part (22) having a rotor (22a) having a circular axis (22b) protruding in a horizontal direction opposite to the axis (21c) and rotatably inserted around the axis (21c); A lid (23) for sealing the pot-like body (21b);
3) a gear portion (24) having a tip end of the circular shaft core (22b) protruding from the drive hole (24b) fixed thereto, and a buffer member (2) containing a viscous fluid filled in an internal gap. The gears (24, 34) mesh with each other, the rotor (22a) is rotated by the movement of the sliding door (D), and the sliding door (D) can be decelerated by frictional resistance of the viscous fluid. A door wheel speed reducer characterized by: 2. The mounting member (4) includes a horizontal plate (41).
A vertical plate (42) and a support plate (43) orthogonal to
C) The cushioning member (2) is provided with the shaft center (2) of the rotor (22a).
The shaft center (21c) of the pot-like body (21b) is rotatably inserted into a shaft hole (22d) provided in the horizontal direction on the opposite side to 2b), and the circular shaft center (22b) of the rotor (22a) is rotated. A deformed portion (22c) is continuously provided at the tip end, and the deformed portion (22c) protruding from the lid (23) is pressed into the drive hole (24b) to fix the gear portion (24). The door wheel deceleration device according to claim 1, wherein 3. A pair of substantially horseshoe-shaped fixing pieces (21a) are provided at substantially symmetric positions with the pot-like body (21b) interposed therebetween, and a substantially U-shaped cutout ( 43a)
An outer peripheral surface of the pot-like body (21b) is fitted to an R portion of the support plate (4), and the fixing piece (21a) is fixed to the support plate (4) by a fixing tool (44).
3. The speed reducer according to claim 1, wherein the speed reducer is mounted on the vertical plate and fixed to the vertical plate.