JP2001295544A - Door stop angle adjusting mechanism for door closer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a knob from being loosened in a circumferential direction even if a door closer has been used for a long time. SOLUTION: A door stop angle adjusting mechanism X1 comprises a vertical fixed shaft 20 fixed on a support plate 12 and having a rod-like guide member 22 provided with a horizontal fixing pin 27 inserted therein, an angle adjusting slide plate 15 engaged with and disengaged from an outer engagement tooth 35 of the vertical fixed shaft 20 in a state of being assembled in a space 38 of a base end part 10 and a knob 16A having a series of notches 30A provided in an engagement insertion part 33 fitted in an fitting hole 21 of the fixing shaft 20 to be engaged with the horizontal fixing pin 27. The series of the notches 30A comprise a knob locking notch part 30c laterally communicating with a lower end part of a vertical guide notch part 30b and a stopper function notch part 50 communicating with a distal end part of the knob locking notch part 30c.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stop angle adjusting mechanism for a door of a door closer. This stop angle adjusting mechanism is a support fixed to the base frame of the fork arm and the upper frame of the door so that it is not necessary to hold the door by hand when the door is opened. The present invention relates to a door stop angle adjusting mechanism for a door closer incorporated in a connection portion with a plate.

[0002]

2. Description of the Prior Art Since the present invention is based on the configuration of a conventional embodiment, FIGS. 1 to 6 show a conventional embodiment for convenience of explanation, while FIGS. 7 to 12 show the present invention. An example will be described.

A conventional embodiment will be described with reference to FIGS. Note that a conventional example is disclosed in
-303501.

FIG. 1 is a schematic explanatory diagram for explaining the entire environment of the invention (an embodiment of the present invention, which is also a conventional embodiment). Reference numeral 1 denotes a door closer attached to the upper corner of the inner wall surface of the door 2 and the lower surface of the upper frame 3 forming the door frame.
Generally, the door closer 1 is fixed to the inner wall surface side of the door 2 so as to be visible from the indoor side, and one end of a long plate-shaped first horizontal rotating rod 5 constituting a link mechanism 4 is connected to the door 6 via a shaft 6. A door closer storage box (not shown),
A second horizontal rotation rod 8 supported at the other end of the first horizontal rotation rod 5 via a support member 7; and a base end of a fork arm 9 constituting the second horizontal rotation rod 8 10, a mountain-shaped protruding plate portion 12a is connected to a stop angle of the door closer (meaning an angle at which the door is stopped at a desired position when the door 2 is opened) through an adjustment mechanism X, and has a screw hole. The horizontal mounting plate portion 12b includes a support plate 12 fixed to the lower surface of the upper frame 3 via a plurality of fixing tools 11.

[0005] At a position near the base end 10 of the fork arm 9, a coil sprig ring 1 as an example of a spring member is provided.
3, the coil spring ring 13 constantly urges the interior engagement ball 14 toward the base end portion 10. The interior engagement ball 14 is engageable with and disengageable from a curved engagement portion formed on an angle adjustment sliding plate 15 of a door closer stop angle adjustment mechanism X described later.

FIGS. 2 to 6 show a stop angle adjusting mechanism X of a door closer according to a conventional embodiment. In the stop angle adjusting mechanism X, when the angle adjusting sliding plate 15 is to be adjusted to a desired rotational position, first, a knob 16 as an operating member is set by a return spring 17 provided in the knob 16.
It is necessary to make a rotation by a required amount in the circumferential direction while pulling in the direction of arrow A (downward) against the spring force of the above, and to be locked by the locking function cutout portion 30a described later.

FIG. 2 shows a state in which the return spring 1 is pulled from a vertical fixed shaft 20 fixed to the support plate 12 on the upper frame 3 side by gripping the knob 16 with a finger.
7 was pulled in the direction of arrow A against the spring force of No. 7, and the angle-adjusting sliding plate was moved in a state in which it was rotated in the circumferential direction, for example, 45 degrees, and locked in the locking function notch 30a. = A state in which the lock of the angle adjusting sliding plate 15 is unlocked by lowering the angle adjusting sliding plate from the unlockable state of the angle adjusting sliding plate 15 is shown.

Referring to FIG. 2, the stop angle adjusting mechanism X
The main members that make up the following will be described. 2 and 4 (showing a state in which the angle adjustment sliding plate 15 is locked), this embodiment can be easily understood.

Reference numeral 20 denotes a vertical fixed shaft fixed to the support plate 12 on the upper frame 3 side. The vertical fixed axis 20 is the support plate 12
And a fitting hole 21 which guides the knob 16 in the up-down direction.
Having.

Numeral 22 is a rod-shaped guide member formed in a bolt shape as shown in FIG. 8 showing a main member of the present invention to be described later. The rod-shaped guide member 22 is formed in a cylindrical shape from a knob 16 formed in a cylindrical shape. It is inserted into the vertical fixed shaft 20. Rod guide member 2
At the upper end of 2, a male screw portion 24 screwed with the female screw portion 23 of the cylindrical vertical fixed shaft 20 is formed. On the other hand, a penetrating pin insertion hole 26 is formed in the head (lower end) of the rod-shaped guide member 22 having the screw groove 25. A horizontal fixing pin 27 that engages with a series of cutouts formed on the knob 16 and having a locking function, a guiding function, and a locking function described below is fixedly attached to the pin insertion hole 26.

The above-mentioned return spring 17 is provided on the rod-shaped guide member 2.
The tubular knob 16 is always urged in the direction of the arrow B (upward) by being interposed between the head portion 2 and the inner wall surface of the insertion end of the cylindrical knob 16. That is, the return spring 17 moves the knob 16 to the support plate 1.
It is biased to two sides.

Here, the horizontal fixing pin 27 on the side of the rod-shaped guide member 22 fixed to the cylindrical vertical fixed shaft 20 and the cylindrical knob 16
In order to understand the engagement relationship with the series of notches 30, FIG.
The configuration of the knob 16 will be described with reference to FIG.

The cylindrical knob 16 is provided with a knob 32 which can be picked by a finger below a flange 31 provided around the center. An engagement insertion portion 33 is provided above the flange portion 31 so as to slide into the engagement hole 21 of the vertical fixed shaft 20.

However, a series of cutouts 30 are formed in the engagement insertion portion 33 as described above.
Is formed in the circumferential direction and has a locking notch 30a for preventing picking back. This locking function notch 30
As shown in FIG.
When the knob 16 is rotated to the left by 45 degrees when the knob 16 is pulled out from the vertical fixed shaft 20 by a predetermined amount, the knob 16 functions in conjunction with the horizontal fixing pin 27 to prevent the knob 16 from returning.

Therefore, the horizontal fixing pin 27 prevents the knob 16 pulled from the vertical fixing shaft 20 in the direction of arrow A against the spring force of the return spring 17 from returning.
In this locked state, the locked state of the angle adjusting sliding plate 15 is manually released.

Turning now to FIGS. 2 and 3, the structure for engaging and disengaging the vertical fixed shaft 20 and the angle adjusting sliding plate 15 will be described. First, outer engaging teeth 35 are provided around the central outer peripheral wall of the vertical fixed shaft 20. On the other hand, on the peripheral wall surface of the large-diameter mounting hole 36 of the angle adjusting sliding plate 15, there are provided inner engaging teeth 37 which can be disengaged from the outer engaging teeth 35.

Therefore, FIG. 2 shows that the angle adjusting sliding plate 15 of the angle adjusting sliding plate 15 is
, Which means "locked state". In this state, the angle adjusting sliding plate 15 can be freely rotated in any direction. The angle adjusting sliding plate 15 is vertically movably fitted to the lower end of the vertical fixed shaft 20 so as to be located in the space 38 formed in the base 10 of the fork arm 9. It moves up and down through the base 10.

On the other hand, FIG. 4 shows that after the angle adjusting sliding plate 15 is appropriately rotated (after the angle adjustment), the angle adjusting sliding plate 15 is rotated.
Is lifted via the fork arm 9 and the inner engaging teeth 37 of the angle adjusting sliding plate 15 are fitted to the outer engaging teeth 35 of the vertical fixed shaft 20 = the angle adjusting sliding plate 15 rotates in the circumferential direction. Impossible = shows the case where it is locked.

As described above, this embodiment is slightly complicated, but in short, the stop angle adjusting mechanism X includes the angle adjusting sliding plate 1.
5 is a structure for raising and lowering the 5 with respect to the vertical fixed shaft 20 and changing the position of the direction of the curved engagement portion 39 formed at the other end of the angle adjustment sliding plate 15.

When the door 2 is opened to a desired position, the angle adjusting sliding plate 1 rotates together with the vertical fixed shaft 20.
This is because the door stop function curved engagement portion 39 of FIG. 5 engages with the engagement ball 14 in the fork arm 9 against the spring force of the coil spring 13.

The description will be returned to the configuration of the series of notches 30 of the knob 16. The series of cutouts 30 are connected to the above-described horizontal locking function cutouts 30a and are vertically guided cutouts 30b.
Is provided. Since the position of the horizontal fixing pin 27 does not always change, the horizontal fixing pin 27 should be referred to as a “horizontal guide pin”, but referring to FIG.
6 is pulled out to a predetermined position, the position of the horizontal fixing pin 27 is within the upper part of the vertical guide notch 30b.

Further, the series notch 30 is provided with a slightly oblique direction lock lock notch 30c communicating with the lower end of the vertical guide notch 30b. As shown in FIG. 6, the knob lock notch 30 c is pushed into the vertical fixed shaft 20 after adjusting the direction of the knob lock notch 30 c, and is horizontal when rotated 45 degrees to the right. It engages with the fixing pin 27.

As described above, the notch 30 of the knob 16 has a locking notch 30a for stopping the knob 16 at a predetermined position when the knob 16 is pulled out, and a vertical guide function notch 30b for moving the knob 16 up and down. And a knob lock function notch 30c for locking the knob 16 to lock the angle-adjusting sliding plate 15 after the angle adjustment. That is, the configuration of the notch 30 in this embodiment is complicated. Note that a pair of such cutouts 30 are formed before and after the knob 16.

As described above, the main members of the conventional embodiment have been described. However, since members which are considered to be specific requirements of the present invention described later have already been disclosed, other members will be described.

Reference numeral 41 denotes a resilient member for urging the knob 16 outward. As an example of the elastic member 41, a dish-shaped seat plate is used. The elastic member 16 includes a movable tubular body 42 having a flange at the lower end and a flange 3 of the knob 16.
1 interposed. 43 is the outer engagement teeth 35
Is a top fixed tubular body attached to a portion near the upper end of the vertical fixed shaft 20 with 44 as a boundary portion, while 44 is a lower fixed tubular body attached to the lower end of the vertical fixed shaft 20.
Since these fixed tubular bodies 43 and 44 have a function of guiding each member, they are desirably formed of a material having a small wear rate and good slip.

In the above configuration, the problem to be solved by the present invention, for example, even if the door closer is used for a long time,
It is not possible to achieve that the knob 16 does not loosen in the circumferential direction.

[0027]

SUMMARY OF THE INVENTION In view of the above problems, the first object of the present invention is to make the knob 16A easily rotate in the circumferential direction without loosening even when the door closer is used for a long time. That is. The second purpose is to provide a so-called "click feeling" when the horizontal fixing pin is locked when the knob is locked.
Is to be able to have. Further, a third object is to eliminate operations such as pulling the knob once and rotating it in the locking direction as in the conventional embodiment.

[0028]

According to the present invention, there is provided a door closing angle adjusting mechanism for a door closer according to the present invention.
In the door stop angle adjusting mechanism X1 of the door closer incorporated in the connection between the support plate 12 and the support plate 12 fixed to the upper frame 3 of the door 2, the door stop angle adjusting mechanism X1 is fixed to the support plate 12. Rod-shaped guide member 22 having a horizontal fixing pin 27
And the outer engaging teeth 3 of the vertical fixed shaft 20 in a state of being incorporated in the space 38 of the base end portion 10.
And a knob 16A having a series of cutouts 30A which engage with the horizontal fixing pins 27 in the engagement insertion portions 33 fitted in the fitting holes 21 of the vertical fixed shaft 20.
The series notch 30A is provided with a vertical guide notch 3
Knob lock notch 3 communicating laterally with the lower end of Ob
0c, and a stopper function notch 50 communicating with the end of the knob lock notch 30c.
At the time of locking, at least one elastic member (17A and / or 41) incorporated so that the horizontal fixing pin 27 urges the knob 16A in the downward direction is applied to the upper inner wall surface of the stopper function notch 50. It is characterized by being pressed.

[0029]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As described above, the present invention focuses on the advantages of the technical effects of the conventional embodiment previously proposed by the applicant, and improves the configuration of a series of cutout portions of the knob. . Therefore, FIG. 1 shows an embodiment of the present invention which is also used as a conventional embodiment. The same applies to each of the members constituting the stop angle adjusting mechanism X1 of the door closer (the same applies regardless of whether the number of parts is a specific requirement of the present invention).

Therefore, in the column of "Embodiments of the invention", the same members and parts of the conventional embodiment having the same structure are given the same names and the same reference numerals, and duplicate explanations are omitted. .

An embodiment of the present invention will be described with reference to FIGS. The main differences between the embodiment of the present invention and the above-described conventional embodiment are as follows. (1) First, the first resilient member 17A as a return spring housed in the fitting hole 21 of the vertical fixed shaft 20 is the return spring 1
Instead of having the function of pulling back the knob 16 as shown in FIG. 7, it has a function of urging the knob 16A in the pushing direction. The first elastic member 1
7A is also different in that it is housed in the fitting hole 21 of the vertical fixed shaft 20. (2) Next, reference numeral 41 denotes a function of a resilient member for urging the knob 16 outward. In the conventional embodiment, the dish-shaped seat plate 41 corresponding to the second resilient member interposed between the movable tubular body 42 and the flange 31 of the knob 16 is “due to the elastic force. Has the function of stably maintaining the state of the knob 16 by the frictional moment with the knob 16. However, the second elastic member 41 of the present invention is provided in a series cutout portion 30A described later. In view of the engagement relationship with the stopper function notch 50, the stopper function has a function of positively urging the knob 16A in the pushing direction in the same manner as the first elastic member 17A. (3) Further, a series of notches 30 formed in the knob 16A
A is different. That is, the conventional notch 30 is provided in the notch 30a in the horizontal direction while communicating with the upper end of the guide notch 30b in the vertical direction. On the other hand, as shown in FIGS. 10 and 12, a notch portion 50 is provided which communicates with the end of the knob lock notch portion 30c to prevent the knob 16A from rotating in the circumferential direction. Are different.
The stopper function notch 50 is directed slightly upward to the end of the knob lock notch 30c and communicates with the off-set state.

Here, paying attention to different points in the configuration of the present invention, a case where the knob 16A is locked to the horizontal fixing pin 27 on the vertical fixed shaft 20 side = the rod-shaped guide member 22 side will be particularly described.

FIG. 7 is an explanatory view showing a state in which the knob 16A is pushed out from the vertical fixed shaft 20 side = the rod-shaped guide member 22 side by the spring force of the first elastic member 17A. That is, the knob 17A descends in the direction of arrow A, and as a result, the horizontal fixing pin 27 is located at the start end (upper end) of the vertical guide notch 30b. In this state, when the fork arm 9 is manually pushed down, the point at which the inner engaging teeth 37 of the angle adjusting sliding plate 14 are separated from the outer engaging teeth 35 of the vertical fixed shaft 20 is as described in the conventional embodiment. It is.

FIGS. 9 and 10 are schematic views for explaining a series of notches 30A formed in the knob 16A.
As is apparent from each of these figures, a series of notches 30A
Are formed in a pair before and after the knob 16A as in the conventional embodiment.

FIG. 11 shows the first elastic member 17A and the second elastic member 17A.
It is explanatory drawing which shows the state which pushed the knob 16A to the vertical fixed shaft 20 side = the rod-shaped guide member 22 side against the spring force of the elastic member 41. That is, the knob 17A rises in the direction of arrow B, rotates in the direction of arrow C, and
As a result, the horizontal fixing pin 27 moves from the start end of the vertical guide notch 30b to the end of the knob lock notch 30c, and moves to the stopper function notch 50. This indicates that the gasket has entered and pressed against the wall surface of the notch 50. FIG. 12 shows that the horizontal fixing pin 27 enters the stopper function notch 50 from the halfway state and presses against the inner wall surface of the stopper function notch 50 by the spring force of the elastic members 17A and 41. . In this case, the fork arm 9 is manually pushed up in advance, and the inner engaging teeth 37 of the angle adjusting sliding plate 14 are engaged with the outer engaging teeth 35 of the vertical fixed shaft 20 as in the conventional embodiment. is there.

[0036]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment of the present invention, at least one elastic member 17A must be provided in order to exhibit the function of the stopper function notch 50 for preventing the knob 16A from loosening.
(Or 41) is required. That is, when the second elastic member 41 is a specific requirement of the invention, the first elastic member 17A is not necessarily required. However, pick 16A
Is rotated in the direction opposite to the arrow C in FIG. 11, and when the horizontal fixing pin 27 reaches the vicinity of the terminal end (lower end) of the vertical guide notch 30b, the knob 16A is biased by the first elastic member 17A. It is desirable that the first elastic member 17 </ b> A should be provided in the fitting hole 21 of the vertical fixed shaft 20 because it is well extruded.

[0037]

As is apparent from the above description, the present invention has the following operations and effects. (1) The stopper notch 50 communicating with the end of the knob lock notch 30c is provided in the knob 30A.
Is provided, the knob 16A is easily rotated in the circumferential direction and does not loosen even when the door closer is used for a long time. (2) The knob can be locked in a one-touch manner. It does not require complicated operations as in the past. (3) Since the stopper function notch 50 is directed slightly upward to the end of the knob lock notch 30c and communicates with the off-set state, the stopper function notch 50 is locked with the stopper function notch 50 to lock the knob 16A. When the horizontal fixing pin is locked, a so-called "click feeling" can be provided by utilizing the spring force of at least one elastic member. Thereby, an incomplete lock state can be avoided. (4) In the case of the embodiment in which the first resilient member 17A is housed in the fitting hole 21 of the vertical fixed shaft 20, it has a function of biasing the knob 16A in the pushing direction, so that the angle adjustment sliding is performed. In order to cancel the locked state of the knob 16A for adjusting the plate 15, it is possible to omit operations such as pulling the knob once and rotating it in the locking direction as in the conventional embodiment.

[Brief description of the drawings]

1 to 6 are explanatory views showing a conventional embodiment. 7 to 12 are explanatory views showing one embodiment of the present invention.

FIG. 1 is a schematic explanatory diagram showing an example for explaining an implementation environment of the present invention (FIG. 1 is used both as a conventional embodiment and an embodiment of the present invention).

FIG. 2 is a schematic cross-sectional explanatory view of a locked state of a knob and a state in which engagement of an angle adjustment sliding plate is released.

FIG. 3 is an explanatory diagram of a knob.

FIG. 4 is a schematic sectional explanatory view in which an angle adjusting sliding plate is engaged and a knob is in a locked state.

FIG. 5 shows a state in which the knob is first rotated by a predetermined amount in order to lock the knob from a state where the knob is pulled out and locked (this is assumed to be “initial position” = “corresponding to FIG. 2”). FIG.

FIG. 6 is a continuation of FIG. 5, with the knob pushed in the direction of the arrow and rotated to lock the knob.

FIG. 7 is a schematic sectional explanatory view corresponding to FIG. 2 in relation to a conventional example.

FIG. 8 is an exploded perspective view of a main member.

FIG. 9 is an explanatory view of the knob as viewed from the front.

FIG. 10 is an explanatory view of the knob viewed from the left side.

FIG. 11 is a schematic sectional explanatory view corresponding to FIG. 4 in relation to a conventional example. However, the orientation is different from FIG. 4 for easy understanding.

FIG. 12 is an explanatory view showing a state in which a horizontal fixing pin enters a stopper function notch from an intermediate state by rotating a knob.

[Explanation of symbols]

X, X1 ... stop angle adjusting mechanism, 1 ... door closer, 2 ...
Door, 3 ... upper frame, 4 ... link mechanism, 5 ... first horizontal rotating rod,
Reference numeral 6: shaft, 7: support member, 8: second horizontal rotating rod, 9: fork arm, 10: base end, 12: support plate, 13: coil splicing, 14: interior engagement ball, 15: angle Adjusting sliding plate, 16, 16A ... knob, 17: first elastic member, 2
0: vertical fixed shaft, 21: fitting hole, 22: rod-shaped guide member,
26: pin insertion hole, 27: horizontal fixing pin, 30, 30A
... a series of cutouts, 30a ... locking function cutout, 30b ... vertical guide cutout, 30c ... knob lock notch, 31 ... flange, 32 ... knob, 33 ... engaging insert, 38 ... space
39: curved engagement portion, 41: second resilient member, 42: movable tubular body, 43: upper fixed tubular body, 44: lower fixed tubular body, 50: stopper function cutout portion.

Claims (3)

[Claims] 1. A door stop angle adjusting mechanism X1 of a door closer incorporated in a connecting portion between a base end portion 10 of a fork arm 9 and a support plate 12 fixed to an upper frame 3 of a door 2, the door stop angle. The adjusting mechanism X1 is fixed to the support plate 12 and has a vertical fixed shaft 20 containing a rod-shaped guide member 22 having a horizontal fixed pin 27. The vertical fixed shaft 20 is installed in the space 38 of the base end portion 10. The angle adjusting sliding plate 15 which engages with and disengages from the outer engaging teeth 35 of the vertical fixing shaft 20;
A knob 16A having a series of cutouts 30A engaged with the horizontal fixing pin 27 in the engagement insertion portion 33 fitted in
The series cutout portion 30A includes a knob lock cutout portion 30c that communicates laterally with the lower end of the vertical guide cutout portion 30b, and a stopper function cutout portion 50 that communicates with the terminal end of the knob lock cutout portion 30c. At least one or more resilient members (17A and / or 41) incorporated so that the horizontal fixing pin 27 urges the knob 16A downward when the knob 16A is locked. A door closing angle adjusting mechanism for a door closer, which is in pressure contact with an inner wall surface. 2. The door closer according to claim 1, wherein the stopper function notch portion 50 is slightly upwardly directed to an end portion of the knob lock notch portion 30c and communicates with an off-set state. Stop angle adjustment mechanism for doors. 3. The resilient member 17A according to claim 1,
Is a rod-shaped guide member 22 in a fitting hole 21 of a vertical fixed shaft 20.
A door closing angle adjusting mechanism for a door closer, wherein the knob 16A is constantly urged in the pushing direction.