JP3408100B2 - Sliding door closer with holding part - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding door closer, and more particularly to a sliding door closer provided with a belt-shaped member such as a timing belt which interlocks with the movement of the sliding door in the opening direction or the closing direction.

[0002]

2. Description of the Related Art As a conventional sliding door closer, Japanese Patent No. 2
There is one described in Japanese Patent No. 525673. This conventional sliding door closer will be described with reference to FIGS. 7, 8 and 9.

In FIG. 7, a conventional sliding door closer 30 is a sliding door 10.
It is a front view showing the state where it was attached to. FIG. 8 is FIG.
It is an enlarged view which shows the detail of the sliding door closer 30 shown in FIG.
3 is a front view of the sliding door closer 30, B is a front view of the mounting bracket 35, and C is a side sectional view of the sliding door closer 30. 9 is a front view showing a state in which the sliding door closer 30 shown in FIG. 7 is attached to the sliding doors 10 having different opening and closing directions.

As shown in FIG. 7, fittings 21 and 22 are fixed to the sliding door 10.
Door wheels 23 and 24 are rotatably attached to the wheels 1 and 22, respectively. The door frames 23 and 24 are attached to the mounting frame 20.
It is mounted on the rail 11 installed in the
By rolling, the sliding door 10 moves along the rail 11 in the directions of arrows 90 and 91.

FIG. 7 shows a state in which the sliding door 10 is closed. From this state, the sliding door 10 is opened by moving in the direction of arrow 90, and the sliding door 10 is closed by moving in the direction of arrow 91 from the open state. It

The timing belt 9 is attached to the fitting 21.
Of the timing belt 9 is fixed to the mounting member 22. The timing belt 9 is stretched between the drum 3 of the sliding door closer 30 and the pulley 12. Drum 3 and pulley 12
And are attached to the mounting frame 20, and the rail 11
Located at both ends of.

A tooth portion is formed on the inner surface of the timing belt 9 and meshes with a tooth portion formed on the outer circumference of the drum 3. Therefore, when the sliding door 10 is opened in the direction of arrow 90, the drum 3 rotates in the direction of arrow 92 around the center bolt 3J due to the engagement of the timing belt 9 and the drum 3.

A mainspring mechanism is built in the sliding door closer 30, and the mainspring is wound by the opening operation of the sliding door 10 to accumulate a restoring force. When the sliding door 10 is released, the drum 3 reverses in the direction of arrow 93 due to the restoring force of the mainspring, and the sliding door 1 passes through the timing belt 9.
0 is automatically closed.

At the time of automatic closing by the restoring force of the mainspring,
The closing mechanism of the sliding door 10 is limited to a low speed by the hydraulic mechanism in the sliding door closer 30. This hydraulic mechanism will be described based on FIG. 8C.

A rotary shaft 39 is integrally fixed to the drum 3 by a central bolt 3J. Arrow 90 for sliding door 10
When opened in the direction, the drum 3 rotates in the direction of arrow 92, and the rotary shaft 39 also rotates accordingly. Rotating shaft 3
A screw portion 31 is formed on the shaft 9, and the piston 36 located in the cylinder 37 is screwed into the screw portion 31.

When the sliding door 10 is opened, the rotating shaft 39 rotates so that the piston 36 moves in the cylinder 37 by the arrow 9.
Slide in 5 directions. The cylinder 37 is filled with hydraulic oil, and as the piston 36 moves in the direction of arrow 95, the hydraulic oil in the piston rear chamber 37b passes through a check valve (not shown) to the piston front chamber 37a. Flow. In this case, the check valve allows a sufficient flow rate of the hydraulic oil to pass therethrough, so that the sliding door 10 can be opened without any resistance due to the hydraulic oil.

On the other hand, when the sliding door 10 receives the restoring force of the mainspring and the sliding door 10 automatically closes, the drum 3 reverses in the direction of arrow 93 via the timing belt 9, and the piston 36 in the cylinder 37 moves in the direction of arrow 94. Slide in the direction. At this time, the hydraulic oil in the piston front chamber 37a is transferred to the speed adjusting valve 3
Flowing into the piston rear chamber 37b while being controlled by 8. Therefore, the moving speed of the piston 36 in the direction of the arrow 94 is limited, and the automatic closing speed of the sliding door 10 is suppressed to a low speed via the drum 3 and the timing belt 9.

There are some types of sliding doors 10 having different opening / closing directions (left / right sliding hand), and FIG. 9 shows a state in which a sliding door closer 30 is attached to the sliding door 10 having different left / right sliding hand from FIG. 7. That is, when the sliding door 10 is moved in the direction of arrow 91 from the state shown in FIG. 9, the sliding door 10 is opened, and by moving in the direction of arrow 90 from the opened state, the sliding door 10 is closed.

By the way, when the sliding door 10 is automatically closed, for example, an operator may forcibly apply a force in the closing direction in order to quickly close the sliding door 10. When the external force in the closing direction is rapidly applied in this way, the drum 3 is rotated at a low speed by the hydraulic mechanism, while the sliding door 10 is rotated.
The timing belt 9 interlocked with the drum tries to move faster with respect to the drum 3.

As a result, a lift occurs between the drum 3 and the timing belt 9 shown in FIG. 7 at the position P1 in FIG. 6A. Further, the floating occurs at the position P2 in FIG. 6B between the drum 3 and the timing belt 9 shown in FIG.

Then, this uplift propagates in the direction of arrow 93 as the drum 3 rotates, and the meshing phase of the timing belt 9 and the drum 3 is deviated. In order to prevent such lifting of the drum 3 and the timing belt 9 from each other, the conventional sliding door closer 30 is provided with a pressing roller 32 shown in FIG. 8A.

The sliding door closer 30 has a mounting bracket 35.
(Figs. 8A and 8B) are fixed, and the fitting 3
The pressing roller 32 is attached to the attachment piece 35a of No. 5 via the attachment plate 33. The mounting plate 33 is
Mounting hole 3 with screw 34 formed in mounting piece 35a
It is attached to the attachment piece 35a by being screwed into 5c. The pressing roller 32 presses the timing belt 9 to prevent the pressing roller 32 from floating from the drum 3.

The sliding door closer 30 shown in FIG.
In the case of mounting, the lifting of the timing belt 9 at the time of closing occurs at the position P2 shown in FIG. 6B. For this reason,
It is necessary to attach the pressing roller 32 in correspondence with this position P2.

That is, the screw 34 is loosened, and the mounting plate 33 is removed from the mounting member 35 of the mounting member 35. Then, the screw 34 is screwed into the mounting hole 35d (FIG. 8B) formed in the mounting piece 35b, and the mounting plate 33 is mounted on the mounting piece 35b.

[0020]

The conventional sliding door closer 30 has the following problems. In the conventional sliding door closer 30, as described above, it is necessary to change the mounting position of the pressing roller 32 according to the left / right sliding hand of the sliding door 10. For this reason, there is a problem in that the work of attaching the sliding door closer 30 depending on whether the sliding door 10 is slid to the left or right takes time and work efficiency is reduced.

Even when the sliding door 10 is opened, if an external force is rapidly applied, the drum 3 and the timing belt 9 may be lifted. in this case,
Since the drum 3 is rotating in the direction of the arrow 92, the floating position of the timing belt 9 is not the positions P1 and P2 shown in FIGS. 6A and 6B but the positions P3 and P4.

The floating at the positions P3 and P4 spreads in the direction of arrow 92 as the drum 3 rotates, and the phase of meshing between the timing belt 9 and the drum 3 shifts. Therefore, the conventional sliding door closer 30 also has a problem that it is not possible to effectively prevent the lifting of the drum 3 and the timing belt 9 when opened.

Therefore, according to the present invention, it is possible to improve the work efficiency of the work of installing the sliding door closer according to the left / right sliding property of the sliding door, and moreover, to prevent reliably the floating between the drum and the timing belt. The purpose is to provide a sliding door closer having a section.

[0024]

SUMMARY OF THE INVENTION A sliding door closer having a holding portion according to the present invention is a book for limiting the closing speed of a sliding door to a low speed.
And body portion, the rotation axis is held in the main body portion, a rotatable rotary unit around a rotation center axis, and the belt-shaped member to be interlocked with the movement in the opening direction or closing direction of the sliding door
The floating part that meshes with each other and presses the floating part that rotates between the rotating part that rotates in the opening direction and the closing direction according to the movement of the sliding door in the opening direction or the closing direction and the rotating part that rotates in the closing direction and the band-shaped member, Is provided at a position where the floating member is to be lifted, and presses up the floating member between the closing direction pressing unit that comes into contact with the belt-shaped member that is about to lift and the rotating unit that rotates in the opening direction and the belt-shaped member. And a pressing member for the opening direction that comes into contact with the belt-shaped member that is about to lift, and the pressing member for the closing direction and the pressing member for the opening direction are supports fixed to the main body.
It is held by metal fittings and is configured integrally with the rotating part.
Said body portion substantially about the rotation axis of the rotating section 1
It is characterized in that the closing direction pressing portion and the opening direction pressing portion are configured to function even with respect to sliding doors of different pulling doors by rotating and attaching them by 80 degrees.

In the sliding door closer having the holding portion of the present invention, the closing direction holding portion and the opening direction holding portion are
It is characterized by being composed of rollers.

[0026]

Therefore, the sliding door can be closed and opened.
It is possible to reliably prevent the floating between the rotating portion and the belt-shaped member when moving in the direction . Because of this, rotation
Disadvantages associated with the lifting of the belt-shaped member in part, especially
In both the closing direction and the opening direction of the rotating part and the belt-shaped member
It is possible to avoid the definitive shift of the phase or the like.

Further, for a sliding door of a type having a different opening / closing direction (left / right pulling hand), the rotation center axis of the rotating portion is substantially 1.
When rotated and rotated for 80 degrees, it is not necessary to change the positions of the closing direction pressing part and the opening direction pressing part in the sliding door closer. For this reason, when installing the sliding door closer according to the left / right sliding behavior of the sliding door ,
The work of changing the positions of the holding portion and the opening direction holding portion can be omitted, and the work efficiency can be improved.

[0028]

[0029]

[0030]

[0031]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a sliding door closer having a pressing portion according to the present invention will be described with reference to FIGS. FIG. 1 is a front view showing a state where a sliding door closer 2 is attached to a sliding door 10, FIG. 2A is an enlarged front view of the sliding door closer 2 shown in FIG. 1, and FIG. 2B is an enlarged plan view of the sliding door closer 2 shown in FIG. Is.

Further, FIG. 3A shows a sliding door closer 2 shown in FIG.
FIG. 3B is an enlarged right side view of FIG. 3, and FIG. 3B is an enlarged left side view of the sliding door closer 2 shown in FIG. 1. Furthermore, FIG. 4 shows IV-I shown in FIG. 2A.
It is a sectional view taken along the arrow V. FIG. 5 is a front view showing a state where the sliding door closer 2 shown in FIG. 1 is attached to a sliding door 10 having different left and right sliding properties.

[Overall Structure of Sliding Door] As shown in FIG. 1, fittings 21 and 22 are fixed to the sliding door 10,
Doors 23 and 2 are attached to the mounting brackets 21 and 22, respectively.
4 is rotatably mounted. This door car 23, 2
4 is mounted on a rail 11 provided on the mounting frame 20, and the sliding doors 10 move in the directions of arrows 90 and 91 along the rail 11 as the door rollers 23 and 24 roll.

FIG. 1 shows a state in which the sliding door 10 is closed. From this state, the sliding door 10 is opened by moving in the direction of arrow 90, and the sliding door 10 is closed by moving in the direction of arrow 91 from the open state. It That is, the arrow 90 direction in the state shown in FIG. 1 is the opening direction in this embodiment, and the arrow 91 direction is the closing direction in this embodiment.

An adjusting metal fitting 25, to which one end of the timing belt 9 which is a belt-shaped member is fixed, is connected to the mounting metal fitting 21 by a bolt, and an attaching metal fitting 26 to which the other end of the timing belt 9 is fixed is attached to the mounting metal fitting 22. Are connected by bolts. The timing belt 9 is stretched between the drum 3 of the sliding door closer 2 and the pulley 12. The drum 3 is the rotating unit in this embodiment.

The sliding door closer 2 and the pulley 12 are attached to the attachment frame 20 and are located at both ends of the rail 11. The main body portion 2H of the sliding door closer 2 is fixed to the mounting bracket 15, and the support metal fitting 16 is sandwiched between the mounting bracket 15 and the main body portion 2H of the sliding door closer 2 , and these are fixed by bolts 17. (See FIG. 2B). Then, the sliding door closer 2 is attached to the mounting frame 20 by fixing the mounting bracket 15 to the mounting frame 20.

A tooth portion 9G is formed on the inner surface of the timing belt 9.
(FIG. 2A) is formed and meshes with the tooth portion 3G (FIG. 2B) formed on the outer periphery of the drum 3. Therefore, when the sliding door 10 is opened in the direction of arrow 90, the drum 3 rotates in the direction of arrow 92 around the center bolt 3J serving as the rotation center axis due to the engagement of the timing belt 9 and the drum 3. A proper tension is constantly applied to the timing belt 9 by the compression spring 13.

The main body 2H of the sliding door closer 2 has a mainspring mechanism built therein. When the sliding door 10 is opened, the mainspring is wound and a restoring force is accumulated. And sliding door 1
When 0 is released, the drum 3 reverses in the direction of arrow 93 by the return force of the mainspring, and the sliding door 10 is automatically closed via the timing belt 9.

At the time of automatic closing by the restoring force of the mainspring,
The closing speed of the sliding door 10 is limited to a low speed by the hydraulic mechanism inside the main body 2H. Since this hydraulic mechanism is a known mechanism, its details are omitted (see FIG. 8C).

In the sliding door closer 2 of this embodiment, the closing speed by hydraulic pressure is adjusted by operating the speed adjusting screws 6a, 6b, 6c shown in FIG. 3B. The speed adjusting screw 6c is for adjusting the closing speed, the speed adjusting screw 6a is for adjusting the closing start speed, and the speed adjusting screw 6b is for adjusting the intermediate speed therebetween.

The speed adjusting screws 6a, 6b and 6c are
It is provided on the side surface of the main body portion 2H and is positioned so as to face the inside of the timing belt 9 wound around the drum 3. Since the speed adjusting screws 6a, 6b, 6c face inward, the respective screws can be easily operated.

[Rollers 4 and 5 of Sliding Door Closer 2] By the way, when the sliding door 10 is automatically closed, for example, an operator may forcibly apply a force in the closing direction to quickly close the sliding door 10. When the external force in the closing direction is rapidly applied as described above, the drum 3 is rotated at a low speed by the hydraulic mechanism, while the timing belt 9 interlocked with the sliding door 10 tries to move faster with respect to the drum 3. To do.

As a result, a lift occurs between the drum 3 and the timing belt 9 shown in FIG. 1 at the position P1 in FIG. 6A. Then, this floating propagates in the direction of arrow 93 as the drum 3 rotates, and the phase of meshing between the timing belt 9 and the drum 3 is deviated.

Even when the sliding door 10 is opened, if the person who opens and closes rapidly applies an external force, the drum 3 and the timing belt 9 may be lifted. In this case, since the drum 3 is rotating in the direction of arrow 92,
The floating position of the timing belt 9 is not the position P1 shown in FIG. 6A but the position P3. The floating at the position P3 spreads in the direction of the arrow 92 as the drum 3 rotates, and the meshing phase of the timing belt 9 and the drum 3 shifts.

In order to prevent the lifting of the drum 3 and the timing belt 9 that occur during opening and closing, the sliding door closer 2 in this embodiment is provided with two rollers 4 and 5. The roller 4 is provided at a position corresponding to the position P1 shown in FIG. 6A, and the roller 5 is provided at a position corresponding to the position P3 shown in FIG. 6A.

Therefore, the roller 4 can suppress the floating of the drum 3 and the timing belt 9 that occurs when the roller 4 is closed, and the roller 5 can suppress the floating of the drum 3 and the timing belt 9 that is open. The roller 4 is the closing direction pressing portion in the present embodiment,
The roller 5 is the opening direction pressing portion in the present embodiment.

As shown in FIG. 4, a roller shaft 4K is fixed to the support fitting 16, the roller 4 is fitted into this K4, and the center bolt 4J is screwed into and attached to the roller shaft 4K. There is. The roller 4 is rotatable with respect to the roller shaft 4K. The roller 5 has the same structure as the roller 4, and is attached to the support fitting 16.

The rollers 4 and 5 are located close to the timing belt 9, and the positions P1 and P3 (FIG. 6A).
It is designed to suppress the rise in water. Therefore, it is possible to avoid inconveniences caused by the lifting of the drum 3 and the timing belt 9, for example, the shift of the meshing phase of the drum 3 and the timing belt 9.

The rollers 4 and 5 are connected to the timing belt 9
The timing belt 9 may be surely prevented from being lifted up by directly contacting the timing belt 9. However, in this embodiment, in order to reduce the load on the timing belt 9, a slight gap is provided between the timing belt 9 and the rollers 4, 5. In this case, at least the rollers 4 and 5 may be arranged close to the timing belt 9 so that disengagement between the drum 3 and the timing belt 9 can be avoided.

[Installation of Sliding Door Closer 2 According to Left / Right Sliding of Sliding Door 10] There are types of sliding doors 10 having different opening / closing directions (left / right sliding), and FIG. The state where the sliding door closer 2 is attached is shown. That is, from the state shown in FIG.
When 0 is moved in the direction of arrow 91, the sliding door 10 is opened, and by moving in the direction of arrow 90 from the open state, the sliding door 10 is closed. The arrow 91 direction in the state shown in FIG. 5 is the opening direction in this embodiment, and the arrow 90 direction is the closing direction in this embodiment.

The sliding door closer 2 is provided at a position corresponding to the left / right sliding property of the sliding door 10, and in the case shown in FIG. 5, the sliding door closer 2 is attached on the left side in the drawing. The mainspring mechanism in the main body portion 2H of the sliding door closer 2 operates only in one direction.

For this reason, as shown in FIG. 5, the adjustment fitting 25 to which one end of the timing belt 9 is fixed is attached to the door roller 24 in a direction different from that in the case of FIG. Also,
Adjustment fitting 26 to which the other end of the timing belt 9 is fixed
The mounting bracket 2 in a direction different from that of FIG.
Attach to 1. As a result, both ends of the timing belt 9 are positioned on the upper side, and the rotation direction of the drum 3 according to the opening / closing of the sliding door 10 can be made the same as in the case of FIG.

Therefore, the lifting of the drum 3 and the timing belt 9 at the time of closing occurs at the position P2 shown in FIG. 6B, and the lifting of the drum 3 and the timing belt 9 at the time of opening occurs at the position P4 shown in FIG. 6B. become.

In the sliding door closer 2 of this embodiment, as described above, the speed adjusting screws 6a, 6b, 6c (FIG. 3B) provided on the side surface of the main body 2H are provided on the timing belt 9 wound around the drum 3. It is positioned so that it faces inward. Therefore, when the sliding door closer 2 is attached to the position shown in FIG. 5, the center bolt 3 is different from the state shown in FIG.
The J is fixed to the mounting frame 20 while being rotated 180 degrees.

The sliding door closer 2 has a mounting bracket 15
Since it is attached via the mounting bracket 15
Is rotated by 180 degrees and fixed to the mounting frame 20 with bolts. As a result, even in the state of FIG. 5, the speed adjusting screws 6a, 6b, 6c are positioned facing the inside of the timing belt 9 wound around the drum 3.

Further, the mounting bracket 15 is also integrally provided with rollers 4 and 5 via a support metal fitting 16. Therefore, by mounting the mounting bracket 15 by rotating it by 180 degrees, the roller 4 is positioned corresponding to the position P2 shown in FIG. 6B, and the roller 5 is positioned corresponding to the position P4 shown in FIG. 6B.

That is, it is possible to suppress the floating of the drum 3 and the timing belt 9 that occurs when the roller 4 is closed, and the floating of the drum 3 and the timing belt 9 that is opened when the roller 5 is opened. For this reason, the rollers 4, 5 can be moved depending on whether the sliding door 10 is pulled left or right.
There is no need to change the mounting position of the sliding door closer 2
It is possible to improve the work efficiency of the mounting work.

A part of the outer peripheral surfaces of the rollers 4, 5 are flattened to form a flat surface, and the timing belt 9 is inserted in the gap formed between the flat surface and the drum 3. Alternatively, the timing belt 9 may be wound around the drum 3. Accordingly, the work of winding the timing belt 9 around the drum 3 provided with the rollers 4 and 5 in close proximity can be easily performed, and the work efficiency can be further improved.

[Other Embodiments] The sliding door closer having the pressing portion according to the present invention is not limited to the structure shown in the above embodiment. That is, although the drum 3 is illustrated as the rotating portion in the above-described embodiment, other shapes and structures may be used as long as the drum 3 rotates via the belt-shaped member in accordance with the movement of the sliding door in the opening direction or the closing direction.

The timing belt 9 is used as a belt-shaped member.
However, other shapes that interlock with the movement of the sliding door in the opening direction or the closing direction and contact the rotating portion,
A structure may be adopted. Further, in the above embodiment, the configuration in which the tooth portion 9G of the timing belt 9 and the tooth portion 3G of the drum 3 mesh with each other has been described, but the movement of the sliding door is transmitted to the rotating portion via the belt-shaped member. If so, they do not necessarily have to be engaged.

Further, in the above embodiment, the rollers 4 and 5 are illustrated as the pressing portion for the closing direction and the pressing portion for the opening direction, respectively. However, other shapes and structures may be adopted as long as they can prevent the floating generated between the rotating portion and the belt-shaped member. In the above embodiment, the two rollers 4,
However, it is also possible to provide a single roller (holding portion) to share the closing direction holding portion and the opening direction holding portion. In this case, a single roller may be located between the rollers 4 and 5.

In the above embodiment, the sliding door closer 2 provided with the rollers 4 and 5 is illustrated, but only one of the rollers 4 and 5 may be provided. When only the roller 4 is provided, it is possible to provide the sliding door closer 2 that suppresses the floating of the drum 3 and the timing belt 9 that occurs when the roller 3 is closed, and when only the roller 5 is provided, the drum 3 and the timing belt 9 that is opened when the roller 5 is provided. It is possible to provide the sliding door closer 2 that can prevent the floating of the door.

[Brief description of drawings]

FIG. 1 is a front view showing a state in which a sliding door closer 2 which is an embodiment of a sliding door closer having a pressing portion according to the present invention is attached to a sliding door 10.

FIG. 2A is an enlarged front view of the sliding door closer 2 shown in FIG.
B is an enlarged plan view of the sliding door closer 2 shown in FIG. 1.

3 is an enlarged right side view of the sliding door closer 2 shown in FIG. 1, and B is an enlarged left side view of the sliding door closer 2 shown in FIG.

FIG. 4 is a sectional view taken along line IV-IV shown in FIG. 2A.

5 is a front view showing a state in which the sliding door closer 2 shown in FIG. 1 is attached to sliding doors 10 having different left and right sliding properties.

FIG. 6 is a diagram showing a lifted state of a drum 3 and a timing belt 9.

FIG. 7 is a front view showing a state in which a conventional sliding door closer 30 is attached to the sliding door 10, and A is a sliding door closer 30.
Is a front view showing the mounting member 35, and C is a side sectional view of the sliding door closer 30.

8 is an enlarged view showing details of the sliding door closer 30 shown in FIG.

9 is a front view showing a state in which the sliding door closer 30 shown in FIG. 7 is attached to sliding doors 10 having different left and right sliding properties.

[Explanation of symbols]

3 ... drum 3J ... Center bolt 4 ... Laura 5: Laura 9: Timing belt

Claims (2)

(57) [Claims] 1. A main body for limiting a closing speed of a sliding door to a low speed.
When its rotational center shaft is held in the main body portion, a rotatable rotary unit around a rotation center axis, and the belt-shaped member and engaged interlocking with the movement in the opening direction or closing direction of the sliding door,
The rotation part that rotates in the opening direction or the closing direction in response to the movement of the sliding door in the opening direction or the closing direction, and the rising that occurs between the rotating part that rotates in the closing direction and the belt-shaped member are suppressed, so the position where the lifting occurs. Is provided at the position where the lifting occurs because the closing direction pressing part that comes into contact with the band-shaped member that is about to float and the lifting that occurs between the rotating part that rotates in the opening direction and the band-shaped member are pressed. And a pressing member for the opening direction, which comes into contact with the strip-shaped member that is about to float, and the pressing member for the closing direction and the pressing member for the opening direction are held by a support fitting fixed to the main body part and are rotated. parts and are integrally formed, the main body portion, substantially about the rotation axis of the rotating section 1
A sliding door closer having a holding portion, wherein the closing direction pressing portion and the opening direction pressing portion are configured to function even with respect to sliding doors having different sliding doors by being rotated and rotated by 80 degrees. 2. A sliding door closer having a pressing part according to claim 1, wherein the closing direction pressing part and the opening direction pressing part are constituted by rollers.