JPH0448309Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a door closer suitable for use in which the door closer body is fixed to the vertical frame side and a guide rail with a slider inside is fixed to the door side. Relating to force assist devices.

[Conventional technology]

Generally, a door closer is used by fixing its main body to the door and a guide rail with a slider inside to the upper frame, but on the contrary, as shown in Figures 5 and 6, door closers In some cases, the main body 1 is fixed to the vertical frame 2, and the guide rail 3 is fixed to the door 4. However, according to such usage, especially in a small-sized door closer, it is difficult to generate enough closing force to latch the door 4 (not shown), but the force is insufficient and latching is not performed. Also, if you attempt to latch the door using only the closing force of the door closer body, the door closer will become too large, making it impossible to attach a vertical frame.

For this reason, conventionally, a spring is inserted into the guide rail 3 to reinforce the door closing force.

[Problem that the invention attempts to solve]

However, in the above-mentioned door closing force assistance system, if the entire door closing stroke is reinforced, the durability of the spring and the control performance of the door closer body will be affected, and the size of the guide rail will become larger.

Therefore, as a result of studies in view of the above-mentioned problems, the present invention is constructed by equipping a guide rail with a clutch mechanism appropriately formed with a clutch receiver, a roller holding plate, an auxiliary slider, a roller member, and a tension spring. In particular, it is an object of the present invention to provide a door closing force auxiliary device for a door closer that is capable of reinforcing the door closing force only in the section necessary for latching the door, thereby making it possible to completely latch the door with a small door closer. is its purpose.

[Means for solving problems]

That is, in the present invention, the front end is pivotally attached to a main slider having an arm connected to the main shaft of the door closer body, and a roller retaining plate is formed to extend rearward, while the main slider is slidably engaged with a main slider inside the guide rail. A clutch receiver is fixed near the center, and an auxiliary slider is disposed between the clutch receiver and the roller holding plate so as to be slidable in the longitudinal direction, and the auxiliary slider is resiliently biased rearward by a tension spring and is auxiliary. A roller member is movably fitted into a through hole formed through the slider, and the roller member is attached to the roller retaining plate to form an engagement recess into which the roller member is removably engaged when the door is opened and closed, and at a desired opening angle. The above-mentioned problem has been solved by providing each of the clutch receivers with an engaging recess into which the clutch receiver can be engaged and detached.

〔Example〕

The embodiments of the present invention will be described below in detail based on the drawings. As shown in FIGS. 5 and 6, the door closer body 1 is fixed to the vertical frame 2, and the guide rail 3 is fixed to the door 4. Door closer body 1
The main shaft of the guide rail 3 and the arm pin 6 of the guide rail 3 are connected by an arm 5. Further, as shown in FIGS. 1 to 3 A to D, the guide rail 3 is provided with a main slider 8 that is slidably engaged in the longitudinal direction of the guide rail 3.
The arm pin 6 is provided on the lower side, and a belt-shaped roller holding plate 9 is pivotally attached to the upper side with screws 7. The roller holding plate 9 is approximately 1/1/2 the length of the guide rail 3. It is formed to extend rearward to a length of 2.

On the other hand, within the guide rail 3, a clutch receiver 10 is provided with a screw 1 at approximately the center in the longitudinal direction.
It is fixed at 8...

The clutch receiver 10 has a substantially inverted concave shape in cross section, and an auxiliary slider 11 is fitted therein so as to be slidable in the same direction as the main slider 8.

The auxiliary slider 11 has a flat square hole 11a.
is passed through the square hole 11a in the front-rear direction, and the roller holding plate 9 is slidably passed through the square hole 11a.

The auxiliary slider 11 has a tension spring 1 which is hooked at one end to a guide rail mounting pipe 12 fixed to the rear end of the guide rail 3.
3, it is elastically biased rearward (leftward in the figure).

The left and right side walls 11b of the auxiliary slider 11,
11b, through-holes 14 are provided opposite each other in the width direction, and a roller 15 is fitted in the both through-holes 14, 14 in the vertical direction so as to be able to rotate and move freely in the width direction. .

The rollers 15, 15 used have a diameter larger than the thickness of the side walls 11b, 11b of the auxiliary slider 11.

Further, on both left and right sides of the roller holding plate 9,
When the door is closed as shown in FIGS. 1 and 2, the rollers 15, 15 contact the inner surfaces of the left and right side walls 10a, 10a of the clutch receiver 10, so that the engagement recess 16 is removably engaged. , 16 are symmetrically recessed.

Further, the rollers 15, 1 are also provided on the inner surfaces of the left and right side walls 10a, 10a of the clutch receiver 10.
Engagement recesses 17, 17 are provided opposite to each other and are removably engaged when the roller retaining plate 9 is brought into contact with both left and right side surfaces of the roller holding plate 9.
7 and 17 are formed in such a positional relationship that the rollers 15 and 15 are engaged when the door 4 is slightly opened.

Further, the auxiliary slider 11 is moved forward from the door closing position (toward the right in the figure) by a protrusion 11c protruding from the rear end engaging a recess 10b formed in the rear end surface of the clutch receiver 10. The engagement recesses 16, 16 and 17,
17 is formed to have the same length as the slide stroke l of the auxiliary slider 11.

Further, engagement recesses 1 for the rollers 15, 15 are provided on both left and right sides near the rear end of the roller holding plate 9.
9 and 19 are formed to be shallower than the depth of the engagement recesses 16 and 16.

When the engaging recesses 19, 19 are formed in this way,
During the opening/closing of the door 4, the rollers 15, 15 are engaged with the engaging recesses 19, 19 as shown in FIG. 3C, and the closing of the door can be stopped.

Here, each of the above-mentioned engagement recesses 16, 16, 17, 1
7, 19, 19 are preferably formed into approximately semicircular shapes as shown in the figure so that the rollers 15, 15 can be smoothly engaged and disengaged.

Further, instead of the rollers 15, 15, spheres may be used.

In addition, in Figures 1 to 3, 20, 21
are end caps fixed to each end of the guide rail 3, and in the illustrated example, a mounting hole 21a is passed through the right end cap 21, and a mounting hole 21a is inserted through the mounting hole 21a and the pipe 12, respectively. Insert screws to fix the guide rail 3 to the door 4.

Next, the operation of the door closing force assisting device of the present invention will be explained.

In the closed state shown in FIGS. 1 and 2, the main slider 8 is in contact with the clutch receiver 10 and held at the left end, while the auxiliary slider 11 is pulled leftward by the tension spring 13. Slide to the left to engage the through holes 14, 14 of the auxiliary slider 11 and the engagement recess 1 of the roller holding plate 9.
The rollers 15, 15 are engaged with the rollers 6, 16.

When door 4 is opened from the above-mentioned closed position, the fifth
The main slider 8 slides to the right in the figure due to the rotation of the arm 5 shown in FIGS.

At this time, the rollers 15, 15 are engaged with the engagement recesses 16, 16 of the roller retaining plate 9, and since the roller retaining plate 9 and the auxiliary slider 11 are integrally coupled, The slider 11 slides by a stroke l while extending the tension spring 13 to the right, and the tension spring 13 stores a closing force. In addition, the roller 15,
15 reaches the position of the engagement recesses 17, 17 of the clutch receiver 10, the rollers 15, 15 are moved to the engagement recesses 1 of the roller retainer plate 9 by the sliding force of the auxiliary slider 11 and the roller retainer plate 9.
6 and 16, and engages with the engagement recesses 17 and 17 of the clutch receiver 10 as shown in FIG. 3A.
At this time, the movement of the rollers 15, 15 and the engagement/disengagement state with respect to the engagement recesses 16, 16, 17, 17 are
Shown in Figures A to E.

Furthermore, even if the main slider 8 slides to the right, the auxiliary slider 11 comes into contact with the clutch receiver 10 and is prevented from sliding forward, and only the roller holding plate 9 moves to the right. Also, roller 1
5 and 15 are the through holes 14 and 15 as shown in FIG.
14 and the engagement recesses 17, 17, and are pressed outward by the side surface of the roller retaining plate 9, the auxiliary slider 11 and the clutch receiver 10 engage with the roller 1.
5 and 15, and the tension spring 13 is held with the closing force stored.

When the door 4 is further opened and a predetermined opening angle shown in FIG. 3D is reached, the main slider 8 comes into contact with the end cap 21, and further opening of the door is restricted.

When closing the door from the above-mentioned open state, the arm rotates due to the closing force of the door closer body 1, and the main slider slides to the left in the figure.

At this time, the shallow engagement recess 1 is formed in the roller holding plate 9.
9, 19 are provided, the engagement recess 19,
19 reaches the position of rollers 15, 15, the third
As shown in FIG.
1 and P2, it can be engaged with the engaging recesses 19, 19, and can temporarily stop the door from closing, so that it can be used as a stopping device.

Since the engaging recesses 19, 19 are shallowly provided, this engagement can be easily released by applying force to the door, and the door closing stop is released. As the door 4 further closes, the main slider 8 slides to the left, and just before the door is closed, that is, when the engaging recesses 16, 16 of the roller retaining plate 9 reach the position of the rollers 15, 15, the roller retaining plate 9 Since the outward pressure of the rollers 15, 15 by the side surfaces is released, the fixation of the auxiliary slider 11 to the clutch receiver 10 is released. As a result, the rollers 15, 15 are moved into the engagement recess 1 of the clutch receiver 10 by the sliding force of the auxiliary slider 11 caused by the tension spring 13.
7 and 17, and engages with the engagement recesses 16 and 16 of the roller holding plate 9. Accordingly, the auxiliary slider 11 and the roller holding plate 9 slide to the left by the door closing force stored in the tension spring 13 while being integrally connected, and reach the door closing position. At this time, the movement and engagement and disengagement of the roller 15 are performed in the order shown in FIG. Therefore, while the engaging recesses 16, 16 of the roller holding plate 9 slide to the positions of the rollers 15, 15,
Only the closing force of the door closer body acts on the door, but in the section from when the rollers 15, 15 are engaged with the engagement recesses 16, 16 of the roller retaining plate 9 to the door closing position where latching is required, the door closing force of the tension spring 13 acts on the door. is added to ensure latching.

In the above embodiment, a pair of rollers 15 and engaging recesses 16 and 17 are arranged symmetrically in the width direction of the guide rail 3, but the present invention is not limited to this. It may also be placed.

[Effect of idea]

As explained above, the door closing force auxiliary device for the door closer according to the present invention is configured to reinforce the door closing force only in the section necessary for latching immediately before closing the door.
The durability of the spring that is configured to reinforce the entire door closing process, the control performance of the door closer body 1,
This has the effect that problems such as the guide rail 3 becoming larger can be avoided and the door 4 can be reliably latched.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional bottom view showing an embodiment of the door closing force assisting device for a door closer according to the present invention, Fig. 2 is a longitudinal sectional side view of the embodiment, and Fig. 3 A to D show the operating states of the embodiment in order. Each longitudinal sectional bottom view shown in Fig. 4A~
E is each explanatory diagram showing the engagement and disengagement states of the roller and the engagement recess in a partial operating section in the same embodiment, and the fifth
6 are a plan view and a front view showing the usage state of the same embodiment. 1...Door closer body, 3...Guide rail, 5...Arm, 8...Main slider, 9...
Roller holding plate, 10...Clutch receiver, 11...
...Auxiliary slider, 13...Tension spring, 14,
14...Through hole, 15, 15...Roller, 16,
16, 17, 17... Engagement recess.

Claims (1)

[Scope of utility model registration request] A guide rail 3 has a front end pivotally connected to a main slider 8 connected to the main shaft of the door closer body 1 via an arm 5, and has a roller holding plate 9 extending rearward, and a guide rail 3 in which the main slider is slidably engaged.
A clutch receiver 10 is fixed near the approximate center of the
An auxiliary slider 11 is disposed between the clutch receiver and the roller holding plate so as to be slidable in the longitudinal direction, and the auxiliary slider is elastically biased rearward by a tension spring 13, and a through hole is formed through the auxiliary slider. 14, a roller member 15,
An engagement recess 16 that is movably fitted and in which the roller member is removably engaged when the door is opened and closed; 17 on each of the clutch receivers.