JPH08158727A - Stopper device for vertically opened and closed type door - Google Patents

Abstract

PURPOSE: To retain a door on its midway of opening or on its midway of closing under the state, in which a stopper is retained, to hold the state of passage, in which the door can pass, by itself by operating the stopper by a finger, to open or close the door under the state, and to pass the door through the stopper when the door is closed or opened again while automatically returning the door to the retained state. CONSTITUTION: A projecting section 10 is formed to the side section of a door, and a stopper 11 and a rotary cam 12 are mounted rotatably to upper and lower sections at the specified height places of a this-side opening section from a guide rail 5 by shafts 13, 14 in the depth direction respectively. The stopper 11 is energized elastically in the direction that a holding section 15 at one end is rotated and projected into the moving space S of the projecting section, and an engaging section 16 at the other end is engaged or disengaged with or from the rotary cam 12. A cam 17 formed in an intermediate section is turned and energized in the direction that the cam section 17 is abutted against the engaging section of the stopper and an operating section 18 at a front end is projected or retreated into or from the moving space in the rotary cam 12, and the sum of the radius of gyration R1 of the engaging section and the radius of gyration R2 of the cam section is set at a value larger than a distance D between the axial centers of both shafts.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stopper device for vertically opening and closing doors, and more particularly to a state in which a vertically opening and closing door such as a draft chamber, a window sash, and various opening and closing doors is being opened or closed. It relates to a stopper device for holding at.

[0002]

2. Description of the Related Art Heretofore, various stopper devices for opening / closing doors of this kind have been provided. For example, in Japanese Utility Model Laid-Open No. 3-86039, which is a prior application of the present applicant, rotating shafts are arranged in parallel along a guide rail of a door in a draft chamber body, and one end of a stopper is fixed to the rotating shaft. ,
The lower end of the rotary shaft and the operation handle provided on the front surface of the draft chamber body are linked by a link mechanism,
Disclosed is a stopper device in which a rotary shaft is rotated by rotating an operating handle to cause the stopper to project into a passage area of a door so that the stopper can stop an upper edge or a lower edge of the door. .

However, the stopper device described above has an advantage that the door can be easily engaged with and disengaged from the stopper by operating the operation handle provided on the operation panel on the front of the draft chamber, but the stopper interlocking mechanism is complicated. Therefore, there is a drawback that the cost becomes high.

Therefore, the applicant of the present invention has proposed that
As disclosed in Japanese Patent Publication No. 86, a guide rail for slidably guiding a door in a vertical direction is provided with a stopper having a supporting portion for supporting a lower end edge of the door at an upper portion of a shaft perpendicular to the inside and outside of an opening portion of the guide rail. There is provided a stopper device having a simple structure in which it is attached so as to rotate and project in and out, and the tip end thereof can be locked to a vertical ridge provided in the groove of the guide rail. In this stopper device, one or a plurality of stoppers are attached to a predetermined height position of the guide rail, and when the door is held in the state of being opened, the door lower end edge is temporarily moved above the stopper position. After pulling it up to the position, turn this stopper into the guide rail and lock the tip of the stopper with the vertical ridge provided in the guide rail, then lower the door to the support part above the stopper. By supporting the lower edge of the door,
The door is held at a predetermined height position. In addition, when closing the door, pull up the door from the above holding state,
The door is pulled down after the stopper is rotated to the outside of the opening of the guide rail. Although this example has a structure in which the door is lowered with no load, in the case of a structure in which the door is always urged upward, the vertical relationship of the stopper device may be reversed.

[0005]

However, in such a conventional stopper device, since the stopper rotation shaft is provided in the same direction as the door opening direction, that is, in the vertical direction, the stopper is unexpectedly provided. There is a possibility that it will rotate horizontally and come into contact with the door, or the stopper will protrude toward you. Further, when the holding state is released, the tip end portion located in the opening of the guide rail has to be pulled out to the front, which leaves some problems in workability.

In view of the above-mentioned situation, the present invention is to solve the problem. Normally, the stopper is in the locked state so that the door can be locked during opening or closing and the door can be locked with a finger. You can operate the stopper to hold the passage state where the door can pass, and after opening or closing the door in that state, when you close or open the door again, the door passes the stopper and automatically locks The point is to provide a stopper device for the vertical opening / closing door that returns to the state.

[0007]

In order to solve the above-mentioned problems, the present invention is in the state of opening or closing a door that opens and closes vertically along a pair of guide rails provided vertically on both sides of the opening. A stopper device for an up-and-down opening / closing door that is held by, having a protrusion protruding toward the front side of the door, above and below a predetermined height position of the front opening from the guide rail,
A stopper and a rotating cam are rotatably mounted on a rotating shaft in the depth direction, and the stopper is elastically biased in a direction in which a holding portion at one end is rotationally protruded into a moving space of the protrusion, and the other end is Is engaged with and disengaged from the rotating cam, and the rotating cam is urged to rotate in a direction in which the cam portion formed in the intermediate portion abuts on the engaging portion of the stopper to operate the tip end. And a holding portion is set in the moving space, the sum of the radius of gyration of the engaging portion and the radius of gyration of the cam portion is set to be larger than the distance between the axes of the rotary shafts. In the locked state, the engagement between the cam portion and the engagement portion is released, the operation portion is located outside the moving space, and the holding portion is outside the moving space, The portion engages with the engaging portion and maintains the state, and the operating portion causes the moving space to move. When the door protrusion is located inside the door and approaches the stopper from the side opposite to the rotation cam, the protrusion is stopped by the holding edge of the holding portion in the locked state, and the protrusion is stopped in the passing state. When passing, the projection rotates the operation portion to release the engagement between the cam portion and the engagement portion and automatically return to the locked state,
On the other hand, when the protrusion of the door approaches the stopper from the rotation cam side, in the locked state, when the protrusion passes, the protrusion collides with the side edge of the holding portion and rotates the stopper again. A stopper device for the upper and lower openable doors that is returned to the locked state was constructed.

Further, in the above-mentioned stopper device for the upper and lower openable doors, the stopper device is opened and closed in the vertical direction along a pair of guide rails provided vertically on both sides of the opening, and is constantly balanced or opened upward by the counterweight. A stopper device for a vertical opening / closing door that holds a door biased in a direction in the middle of opening, and has a protrusion projecting to the front side on the side portion of the door, and an opening on the front side of the guide rail. The stopper is attached below the predetermined height position and the rotation cam is attached upward so that the stopper can rotate about the rotation shaft in the depth direction. The stopper holds the lower end in the moving space of the protrusion. The engaging portion at the upper end is engaged and disengaged with the rotating cam, and the rotating cam has a cam portion formed below the intermediate portion that engages with the stopper. Biased toward the Is rotated urged by the own weight, it is the preferred embodiment the operation of the tip is to haunt the movement space.

[0009]

The stopper device for a vertically openable door according to the present invention having the above-mentioned contents opens and closes vertically along a pair of guide rails provided vertically on both sides of the opening, and is always balanced by the counterweight. Or, the case of holding the door biased in the upward opening direction in the state of being opened will be described. First, in the state where the door is closed, the holding portion of the stopper protrudes as an initial state to move the moving space. Inside, the stopper's engagement part does not engage with the cam part of the rotating cam, and the cam part is simply in contact with the side edge of the stopper. Then, the protrusion protruding toward the front side on the side portion of the door comes into contact with the holding edge of the holding portion of the stopper, and holds the door at a predetermined height, that is, in the state of a predetermined opening. When opening the door, push down the door slightly and then push the holding part of the stopper against the elastic biasing force with your finger to position it outside the moving space of the protrusion. The rotating cam passes through the cam while rotating, and the operating part of the rotating cam is placed on the engaging part, and when the finger is released from the engaging part, the elastic biasing force of the stopper causes the engaging part to move to the cam part. To maintain that state, so that the holding part is outside the movement space,
The operating portion of the rotating cam is in a passing state in which it projects into the moving space. When the door is raised after setting to this passing state, after the protruding part of the door passes the stopper, the operating part of the rotating cam is pushed up to release the engagement between the cam part and the engaging part of the stopper. , The stopper's holding part projects into the moving space by the elastic biasing force, and when the door's projecting part further rises and passes the turning cam, the turning cam also deviates from its own weight and the turning force biases the cam part toward the stopper. It rotates until it touches the edge and automatically returns to the initial locked state. Then, when closing the door, when the door is pushed down, the protrusion of the door passes through the rotating cam and then collides with the side edge of the holding portion of the stopper to rotate the stopper against the elastic biasing force. Then, the holding part is retracted to the boundary of the moving space, and immediately after the protruding part has passed the holding part, the stopper automatically returns to the locked state in which the holding part is projected into the moving space by the elastic biasing force. Of.

[0010]

The present invention will be described in more detail with reference to the embodiments shown in the accompanying drawings. FIG. 1 shows the entire draft chamber 1 to which the stopper device for the upper and lower openable doors of the present invention is applied, FIG. 2 is an enlarged perspective view of essential parts, FIG. 3 is an exploded perspective view thereof, and FIG. 4 is a sectional view thereof. Shows.

The draft chamber 1 has a processing chamber 2 inside and an opening 3 at the front surface thereof.
The processing chamber 2 can be exhausted through an exhaust duct 4 by an exhaust device (not shown). The opening 3 is provided with a glass door 6 which opens and closes in the vertical direction along a pair of guide rails 5 and 5 which are vertically provided on both sides thereof.

In the present embodiment, it is assumed that the door 6 is connected to a counterweight (not shown) via a wire and is urged in the upward opening direction. However, when the door 6 is balanced with the counterweight. Is also the same.
The door 6 has side frames 8 fixed to both sides of the glass plate 7 for sliding in the groove of the guide rail 5 having a U-shaped cross section without rattling, and a handle 9 fixed to the lower edge thereof. . Further, the handle 9 is projected to the front side, and a side portion thereof is a protrusion 10.

According to the present invention, the door 6 is opened and closed vertically along a pair of guide rails 5 and 5 vertically provided on both sides of the opening 3, and a door 6 is opened by a counterweight so as to open upward. A stopper device A for a vertical opening / closing door that holds the door halfway, having a protrusion 10 projecting toward the front side of the door 6, and a predetermined height of the front opening 3 from the guide rail 5. The stopper 11 is located below the position, and the rotary cam 12 is located close to the upper position, so that the rotary shaft 13 in the depth direction,
The stopper 11 is elastically urged in the direction in which the holding portion 15 at the lower end thereof projects into the moving space S of the protrusion 10, and the engaging portion 16 at the upper end thereof rotates. The cam 12 is engaged with and disengaged from the cam 12.
Is a structure in which the cam portion 17 formed below the middle portion is urged to rotate by its own weight eccentric in the direction in which it comes into contact with the engaging portion 16 of the stopper 11, and the operating portion 18 at the leading end appears and disappears in the moving space S. There, the rotation radius R ₁ and the sum of the turning radius R ₂ of the cam portion 17 is set larger than the axial distance D of the rotary shafts 13 and 14, the holding portion 15 is the moving space of the engaging portion 16 In the locked state within S, the engagement between the cam portion 17 and the engaging portion 16 is released, the operating portion 18 is located outside the moving space S, and the holding portion 15 is outside the moving space S. In the passing state, the cam portion 17 engages with the engaging portion 16 and maintains the state, and the operating portion 18 is located in the moving space S, and the protruding portion of the door 6 from below. When 10 approaches the stopper 11, the protruding portion 10 of the holding portion 15 is locked in the locked state. It stops at the holding edge 19, and when the protrusion 10 passes in the passing state, the protrusion 10 rotates the operating portion 18 to release the engagement between the cam portion 17 and the engaging portion 16 and lock it. When the protrusion 10 of the door 6 approaches the stopper 11 from above, the protrusion 10 collides with the side edge 20 of the holding portion 15 when the protrusion 10 passes in the locked state. The gist is that the stopper 11 is rotated and then returned to the locked state again.

More specifically, the stopper device A is
As shown in FIGS. 2 to 4, the stopper 11, the rotating cam 12 and a kick spring 23 as an elastic biasing means are provided in a concave groove 22 of a holding bracket 21 having a U-shaped cross section. As the elastic biasing means, the kick spring 23 is used.
Besides, a known elastic body such as a leaf spring can be used. Specifically, the stopper device A includes the holding metal fitting 2
The screws 26, 26 are inserted through the through holes 25, 25 formed in the upper and lower sides of the one side plate 24, and are screwed into the screw holes 27, 27 formed in the other side plate 24, and are located in the concave groove 22. Two
6 and 26 are rotary shafts 13 and 14, respectively.
3, a barrel 29 inserted through a through hole 28 formed in the center of the stopper 11 is externally inserted, and a coil portion 23a of the kick spring 23 is wound around one end of the barrel 29 protruding from the through hole 28. One leg piece 23b is locked to the holding edge 19 side, the other leg piece 23c is abutted against the bottom plate 30 of the holding metal fitting 21, and the holding portion 15 of the stopper 11 is elastically biased in the direction of rotational protrusion. Further, a through hole 31 formed at the base of the rotating cam 12 is rotatably fitted into the rotating shaft 14. Here, the distance D between the axes of the rotary shafts 13 and 14 is
Corresponds to the distance between the centers of both screws 26, 26. Then, the upper and lower portions of the bottom plate 30 of the holding metal fitting 21 are fixed to the side surfaces of the opening 3 of the draft chamber 1 with screws 32, 32. Particularly, the head portion 33 of the upper screw 32 stops the back surface of the operating portion 18 of the rotating cam 12 so that the rotating cam 12 has
In any state, the eccentric weight causes the cam portion 17 to return to the direction in which it comes into contact with the engaging portion 16 of the stopper 11.

Further, the stopper 11 has a substantially trapezoidal shape in a front view, the through hole 28 is formed at a position near the lower bottom in the substantially central portion of the trapezoid, and the upper bottom of the trapezoid is held by the metal fitting 21.
It is arranged close to the bottom plate 30 of. When the holding portion 15 of the stopper 11 is in a state of protruding into the moving space S due to the elastic biasing force of the kick spring 23, the engaging portion 16 abuts on the bottom plate 30 of the holding metal fitting 21 and holds it. When the portion 15 is pushed in against the elastic biasing force of the kick spring 23, the entire stopper 11 including the holding portion 15 is outside the moving space S, and the holding portion 15 is pushed further in order to push the stopper 11 The edge of the upper base of the trapezoid can be retracted until it contacts the bottom plate 30. Further, a clearance is provided between the boundary of the moving space S of the protrusion 10 and the side plate 24 of the holding metal fitting 21, and the holding portion 15 can retreat by about this clearance. The radius of gyration R _{1 of the} locus drawn by the tip of the engaging portion 16 about the rotary shaft 13 is set smaller than the inter-axis distance D.

Further, the rotating cam 12 has a slightly elongated shape, the through hole 31 is formed at the base end portion which is eccentric from the center of gravity, and the cam portion 17 which projects to the lower edge of the intermediate portion.
Is formed, and the tip portion is the operation portion 18. The cam portion 17 has a rotation radius R ₂ about the rotation shaft 14.
It is formed of a circular arc edge 17a and a linear contact edge 17b extending from the circular arc edge 17a to the base end portion. Further, the operating portion 18 is set to have a size so as to project into the moving space S in a state where the rotating cam 12 rotates about the rotating shaft 14 and becomes substantially horizontal, and the rotating radius R ₂ Is, of course, set to be smaller than the inter-axis distance D described above. Then, the sum of the radius gyration R ₁ and the radius gyration R ₂ is set to be larger than the inter-axis distance D.

Next, the operation of the stopper device A of the present invention will be described with reference to FIGS. Typical states of this operation are shown as Phase 1 (P1) to Phase 9 (P9). First, it is assumed that the door 6 is in a closed state. In a state where the door 6 is closed, the holding portion 15 of the stopper 11 projects and is in the moving space S as an initial state, and the engaging portion 16 of the stopper 11 and the cam portion 17 of the rotating cam 12 are engaged with each other. Instead, it is assumed that the cam portion 17 is simply in contact with the side edge 20 of the stopper 11 in a locked state (P1). When the door 6 is raised in this locked state, the protrusion 10 projecting toward the front side on the side portion of the door 6 causes the stopper 11 to move.
The holding edge 15 of the holding portion 15 is stopped, and the door 6 is held at a predetermined height, that is, in a state of being opened in advance (P
1).

When the door 6 is to be opened, the door 6 is slightly pushed down, and then the holding portion 15 of the stopper 11 is pushed with a finger against the elastic biasing force of the kick spring 23 to project the projection 1.
When it is positioned outside the movement space S of 0 (P2), the engaging portion 16 of the stopper 11 slides on the contact edge 17b of the rotating cam 12 to rotate the rotating cam 12 and pass through the cam portion 17. When pushed further, the operating portion 18 of the rotary cam 12 is placed on the engaging portion 16, and when the finger is released from the engaging portion 16, the elastic biasing force of the stopper 11 causes the engaging portion 16 to move to the arc edge of the cam portion 17. The holding portion 15 is located outside the moving space S and the operating portion 18 of the rotating cam 12 projects into the moving space S (P3). After setting this passing state, when the door 6 is raised (P4), after the protrusion 10 of the door 6 passes the stopper 11, the operation portion 18 of the rotating cam 12 is pushed up to push the cam portion 17 and the stopper 11 together. At the same time as releasing the engagement with the engaging portion 16, the holding portion 15 of the stopper 11 projects into the moving space S by the elastic biasing force, and the engaging portion 16 causes the holding metal member 2 to move.
When the projection 10 of the door 6 rises and passes through the rotating cam 12 (P6), the rotating cam 12 also comes into contact with the bottom plate 30 of No. 1 (P5).
7 rotates until it comes into contact with the side edge 20 of the stopper 11,
It automatically returns to the initial locked state (P7).

Then, when closing the door 6,
Is pushed down (P7), the protrusion 10 of the door 6 passes through the rotating cam 12 in the locked state, and then collides with the side edge 20 of the holding portion 15 of the stopper 11 to make the stopper 11 elastically urged. It rotates in opposition to it, and accordingly, the engaging portion 16 of the stopper 11 slides the contact edge 17b of the rotating cam 12 to rotate the rotating cam 12 and move the holding portion 15 into the moving space S.
Back to the boundary (P8), and the projection 10 is held by the holding portion 15.
Immediately after passing through the stopper 11, the holding portion 15 of the stopper 11 projects into the moving space S by the elastic biasing force, and the cam portion 17 of the rotating cam 12 automatically returns to the locked state in which the side edge 20 of the stopper 11 is abutted. (P9).

The stopper device for the upper and lower openable doors of the present invention configured as described above, when used at a proper position on the side edge of the draft chamber 1 in the opening / closing direction, holds the door 6 in the open state, Even when the arm or the like is inserted into the processing chamber 2 and the work is performed, the holding portion 15 of the stopper 11 is maintained in a protruding state by the elastic biasing force of the kick spring 23,
Since the projecting portion 10 of the door 6 is stopped by the holding portion 15, the door 6 does not suddenly rise and the work can be carried out with peace of mind. Further, fixing the position of the door in the half-opened state is important in order to maintain the air flow by the air curtain (not shown) and the exhaust capacity by the exhaust device at the optimum preset conditions.

However, according to the present invention, the draft chamber 1
The present invention is not limited to the above-mentioned use, and it is needless to say that it can be widely applied as a stopper device for a window sash having an opening / closing door that slides up and down and other door devices. Further, although the one shown in the figure is provided only at a proper position on the side edge of one of the guide rails 5, both guide rails 5, 5 facing each other are provided.
It may be attached at a proper position on the side edge of. Further, a plurality of stopper devices A, ... Can be attached by changing the height position so that the opening amount of the door 6 can be adjusted in multiple stages.

Further, in the present embodiment, the door 6 is urged in the direction of opening upward, but in the case of the door 6 being urged in the direction of closing downward by its own weight, the above-mentioned stopper is used. By reversing the vertical relationship between the stopper 11 and the rotating cam 12 of the device A, it is possible to hold the door 6 in the state of being closed. In this case, the base portion of the rotating cam 12 is heavier than the operation portion 18 side, and the cam portion 17 is urged by its own weight in the direction in which it comes into contact with the engaging portion 16 of the stopper 11, or the kick spring. It is elastically biased by a spring similar to 23.

[0023]

According to the stopper device for a vertically openable door of the present invention as described above, a door that slides and opens and closes in the vertical direction is stably held at a predetermined height position while being opened or closed. In addition, the positioning thereof does not require any trouble, and even if the door is inadvertently contacted, the protrusion of the door is reliably stopped by the holding portion of the stopper, so that the door does not move. Also, unlocking the door is extremely easy by simply pushing the stopper holding part, and since the unlocked state is held by itself, remove the finger from the stopper device and hold the door handle to open and close the door. Can be operated. Further, unlike the conventional case, since the stopper does not rotate in the horizontal direction, the stopper does not come into contact with the door or project toward the front side, so that it is extremely compact.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a draft chamber that employs a stopper device for a vertical opening / closing door of the present invention.

FIG. 2 is also an enlarged cross-sectional perspective view of the main part.

FIG. 3 is likewise an exploded perspective view of a main part.

FIG. 4 is a vertical sectional view of the same assembled state.

FIG. 5 is a simplified cross-sectional view showing the first half of the operation of the stopper device for a vertical opening / closing door of the present invention.

FIG. 6 is a simplified cross-sectional view showing the latter half of the same operation of the stopper device.

[Explanation of symbols]

 A Stopper device S Moving space for protrusion 1 Draft chamber 2 Processing chamber 3 Opening 4 Exhaust duct 5 Guide rail 6 Door 7 Glass plate 8 Side frame 9 Handle 10 Projection 11 Stopper 12 Rotating cam 13 Rotating shaft 14 Rotating shaft 15 Holding part 16 Engagement part 17 Cam part 17a Arc edge 17b Abutment edge 18 Operation part 19 Holding edge 20 Side edge 21 Holding metal fitting 22 Recessed groove 23 Kick spring 23a Coil part 23b, 23c Leg piece 24 Side plate 25 Through hole 26 Screw 27 Screw hole 28 Through hole 29 Shaft cylinder 30 Bottom plate 31 Through hole 32 Screw 33 Head

Claims (2)

[Claims] 1. A stopper device for a vertically openable door that holds a door that opens and closes in a vertical direction along a pair of guide rails that are vertically provided on both sides of an opening, in the state of being opened or closed. The side portion has a protrusion protruding toward the front side, and the stopper and the rotation cam can be rotated by the rotation shaft in the depth direction above and below a predetermined height position of the opening on the front side of the guide rail. The stopper is one in which the holding portion at one end is elastically biased in the moving space of the protrusion in a direction in which the holding portion is rotationally projected, and the engaging portion at the other end is disengaged from the rotating cam. The moving cam is rotationally biased in a direction in which the cam portion formed in the intermediate portion comes into contact with the engaging portion of the stopper,
The operating portion at the tip is projected and retracted in the moving space, and the sum of the rotation radius of the engagement portion and the rotation radius of the cam portion is set to be larger than the distance between the axes of the rotating shafts, and the holding portion is In the locked state in the moving space, the engagement between the cam portion and the engaging portion is released, the operating portion is located outside the moving space, and the holding portion is in the passing state outside the moving space. , The cam portion is engaged with the engaging portion and maintains the state thereof, and the operation portion is located in the moving space, and the door protrusion approaches the stopper from the side opposite to the rotating cam. If you do
In the locked state, the protruding portion is stopped by the holding edge of the holding portion, and in the passing state, when the protruding portion passes, the protruding portion rotates the operating portion to engage the cam portion with the engaging portion. When it is released and automatically returns to the locked state, and when the protrusion of the door approaches the stopper from the rotating cam side, when the protrusion passes in the locked state, the protrusion contacts the side edge of the holding part. A stopper device for a vertically openable / closable door, characterized in that the stopper device is rotated and then returned to the locked state after a collision. 2. A door which is vertically opened and closed along a pair of guide rails vertically provided on both sides of the opening and is in the middle of opening a door which is always balanced by a counterweight or biased upward. A stopper device for a vertical opening / closing door that holds in a state, having a protrusion projecting to the front side on the side part of the door, and a stopper below a predetermined height position of the front side opening from the guide rail, The rotating cams are brought close to each other and attached so as to be rotatable on the rotating shafts in the depth direction.
The stopper is one that is elastically biased in a direction in which the holding portion at the lower end is rotationally projected into the moving space of the protrusion, and the engaging portion at the upper end is disengaged from the rotating cam. ,
The cam portion formed below the intermediate portion is rotationally biased by its own weight which is eccentric in the direction in which it comes into contact with the engaging portion of the stopper, and the operating portion at the tip projects into and out of the moving space.
Stopper device for the above-mentioned open / close doors.