JP6891573B2 - Brake device for sliding door shoji - Google Patents

Description

The present invention relates to a braking device that brakes the sliding door shoji, which acts on at least one of the closing and opening of the sliding door shoji.

In recent years, airtightness has been improved in sliding, single-pull or double-pull (draw) type sash windows or sliding doors, and the weight of the sliding door shoji itself has increased due to the spread of sliding door shoji with double glazing. It is increasing. For example, one sliding door shoji weighs more than 100 kg.
When closing such a heavy sliding door shoji, due to the large inertial force, sufficient consideration must be given to prevent the hands from being pinched, and the sliding door shoji is braked to improve safety. It is desirable to have a braking device.
Even if the weight of the sliding door shoji is not so large, if the operating force for closing or opening the sliding door shoji is large, the sliding door shoji may hit the vertical frame of the frame and generate noise, or the shoji may generate noise. Since it bounces off the vertical frame, a braking device that brakes the sliding door shoji is effective in order to eliminate such a problem.

As a braking device that brakes when the sliding door sash is closed, a structure that brakes the sliding door sash by a sliding friction force (see, for example, Patent Documents 1 to 3) and a structure that brakes the sliding door sash by the damping force of a damper. (See, for example, Patent Document 4).
The braking device for sliding door shoji of Patent Document 1 includes a braking member having two substantially parallel surfaces serving as friction surfaces and a contact member including a sliding member for generating a sliding frictional force between the braking members. To be equipped.
The brake device for sliding door shoji of Patent Document 2 includes a pair of opposing brake plates and a brake piece that is inserted between the brake plates to generate a sliding frictional force between the brake plates.
The braking device for sliding door obstacles of Patent Document 3 includes a rack of rack members, a brake shaft of the brake body that is coaxial with a pinion that meshes with the rack, and a friction member and pressing that generate a sliding friction force between the brake shaft. It is equipped with a member.
The sliding door shoji brake device of Patent Document 4 is provided with a rack and a rotary damper that generates a damping force coaxial with the pinion that meshes with the rack in the shock absorber on the fixed side, and the sliding door shoji is provided by the urging force of the coil spring. It is equipped with a mechanism to close the door.

Japanese Patent No. 9-317318 Japanese Unexamined Patent Publication No. 11-44148 Japanese Unexamined Patent Publication No. 2005-232820 Japanese Unexamined Patent Publication No. 2005-201344

In the conventional braking device for sliding door sashes, in the above-mentioned configuration in which the sliding door sash is braked by a sliding friction force, the magnitude of the braking force is uncertain depending on the condition of the contact surface and the like, which may result in insufficient braking force. At the same time, it is very difficult to adjust the braking force.
In addition, since it is necessary to generate a sliding friction force, the sliding door obstacles of the members attached to the frame side (the braking member 2 of Patent Document 1, the brake piece 5 of Patent Document 2, and the brake body 21 of Patent Document 3) are opened and closed. Since the length is long, the degree of freedom to change the mounting position of the member to be mounted on the frame side is small.

In the conventional braking device for sliding door shoji, in the above-mentioned configuration in which the sliding door shoji is braked by the damping force of the damper, a rotary damper coaxial with the pinion that meshes with the rack is used, so that the sliding door shoji is particularly heavy and coasts. If the momentum is strong, the torque capacity of the rotary damper may be exceeded and the rotary damper may be damaged.
Moreover, since the diameter increases when the damping force of the rotary damper is increased, the width (thickness) of the sliding door shoji to which the brake device for the sliding door shoji is attached may be restricted.
Furthermore, since the sliding door shoji is provided with a mechanism for closing the sliding door shoji, the length of the member (buffer device 21) attached to the frame side in the opening and closing direction is long, so the attachment position of the member attached to the frame side is changed. The degree of freedom is small.
In addition, by providing a mechanism for closing the sliding door shoji as in Patent Document 4, the sliding door device can be closed reliably, but when the sliding door shoji is opened, a force acts in the direction of closing the sliding door shoji by the coil spring. Therefore, since a larger operating force is required at the beginning of opening the sliding door shoji, the operability of the sliding door shoji deteriorates.

Therefore, what the present invention seeks to solve in view of the above situation is that the sliding door shoji can be braked stably and surely, the degree of freedom to change the mounting position of the member to be mounted on the frame side is large, and the member to be mounted on the sliding door shoji side is provided. The point is to provide a braking device for sliding door shoji, which is easy to slim and can improve operability when operating the sliding door shoji in a direction that does not brake the sliding door shoji.

The braking device for sliding door shoji according to the present invention is a braking device for braking the sliding door shoji, which acts on at least one of closing and opening the sliding door shoji in order to solve the above-mentioned problem.
The braking body attached to the upper surface of the sliding door shoji and
An abutting body to which the braking body abuts, which is attached to a frame body on the upper side of the opening to which the upper part of the sliding door shoji engages,
Consists of
The braking body is
The base to be attached to the sliding door shoji and
A link connector composed of a first link and a second link, and a buffer, which are housed in the substrate,
With
The link conjugate
One end of the first link and one end of the second link are swingably connected around a horizontal axis orthogonal to the opening / closing direction of the sliding door shoji, and the one end becomes a protrusion protruding upward. It forms a mountain shape when viewed from the horizontal direction orthogonal to the opening and closing direction of the sliding door shoji.
The other end of the first link is supported by the substrate and supported by the substrate so that it can swing around a horizontal axis orthogonal to the opening / closing direction of the sliding door shoji.
The other end of the second link is supported by the substrate so that it can slide in the opening / closing direction of the sliding door shoji.
The abutting body is
In the direction of braking the sliding door shoji, while the protrusions of the link connecting body approach, abut, and separate from each other, the protrusions are pushed down and the protrusions are pushed down.
In the direction in which the sliding door shoji is not braked, the protrusions of the link connecting body are moved so as not to be pushed down while the protrusions are approaching, abutting and separating from each other.
The buffer is
The sliding operation of the other end of the second link when the protrusion of the link connecting body is pushed down by the abutting body is buffered (claim 1).

According to such a configuration, in the direction of braking the sliding door obstacle, the operation of the other end of the second link, which slides when the abutting body pushes down the protrusion of the link connecting body of the braking body, is buffered by the braking body. Since the body cushions, the sliding door obstacle can be braked stably and surely compared to the configuration in which the sliding door obstacle is braked by the sliding friction force. In addition, the abutting body attached to the frame body side is the protrusion of the link connecting body of the braking body. Since the function of pushing down the part is sufficient, the length of the sliding door obstacle in the opening / closing direction is short, so that the degree of freedom in changing the mounting position is large. Therefore, the position where the sliding door sash is braked can be easily changed, and the sliding door sash can be braked both when the sliding door sash is closed and when the sliding door sash is opened, or in order to increase the braking force. It is also easy to arrange.
Furthermore, since the shock absorber of the brake body cushions the operation of the other end of the second link that slides when the contact body pushes down the protrusion of the link coupling body of the brake body, the shock absorber Since it is easy to make the brake body slim, the brake body is not easily restricted in size due to the width (thickness) of the sliding door obstacle when ensuring the required performance.
In addition, in the direction that does not brake the sliding door obstacle, the abutting body moves so as not to push down the protrusion of the link connecting body of the braking body, so that the operation is performed when operating the sliding door obstacle in the direction that does not brake the sliding door obstacle. Since the operating force can be reduced as compared with a coil spring or the like in which a restoring force acts in the direction opposite to the direction, the operability of the sliding door obstacle can be improved.

Here, the buffer is
It is a linear damper in which a damping force is generated by contracting the piston rod from the extended state, and it is a preferable embodiment to include a return spring for returning the piston rod to the extended state (claim 2).

According to such a configuration, since the shock absorber is a linear damper in which a damping force is generated by contracting the piston rod from an extended state, the structure is simple and the reliability is improved, and the shape of the shock absorber is improved. Becomes slimmer.
Further, since the piston rod of the linear damper is returned to the extended state by the return spring, after the protrusion of the link connecting body is pushed down by the contact body, the protrusion is not pushed down by the contact body. Then, the link connection is surely returned to the original form.

Further, by moving the position of the horizontal axis in which the other end of the first link swings in the opening / closing direction of the sliding door shoji with respect to the substrate, the height of the protrusion of the link connecting body is increased. It is a more preferable embodiment to include the adjusting means for adjusting the above (claim 3).

According to such a configuration, the adjustment means moves the position of the horizontal axis in which the other end of the first link swings in the opening / closing direction to change the height of the protrusion of the link coupling, thereby changing the height of the second link. The stroke at which the other end of the link slides changes. Therefore, since the stroke of the sliding operation of the other end of the second link buffered by the shock absorber changes, the braking force of the braking device can be easily adjusted.

The braking device for sliding door shoji according to the present invention is a braking device for braking the sliding door shoji, which acts on at least one of closing and opening the sliding door shoji in order to solve the above-mentioned problem.
The braking body attached to the upper surface of the sliding door shoji and
An abutting body to which the braking body abuts, which is attached to a frame body on the upper side of the opening to which the upper part of the sliding door shoji engages,
Consists of
The braking body is
The base to be attached to the sliding door shoji and
The first braking means and the second braking means housed in the substrate,
With
The first braking means is
A unit frame that can slide in the substrate in the opening / closing direction of the sliding door shoji,
A link connector composed of a first link and a second link, and a first buffer, which are housed in the unit frame,
With
The link conjugate
One end of the first link and one end of the second link are swingably connected around a horizontal axis orthogonal to the opening / closing direction of the sliding door shoji, and the one end becomes a protrusion protruding upward. It forms a mountain shape when viewed from the horizontal direction orthogonal to the opening and closing direction of the sliding door shoji.
The other end of the first link is supported by the unit frame and supported by the unit frame so that it can swing around a horizontal axis orthogonal to the opening / closing direction of the sliding door shoji.
The other end of the second link is supported by the unit frame so that it can slide in the opening / closing direction of the sliding door shoji.
The second braking means is
A second buffer that buffers the sliding operation of the unit frame is provided.
The abutting body is
In the direction of braking the sliding door shoji, when the protrusions of the link connection come into close contact with each other, after the second buffer operates, the protrusions of the link connection are separated from each other. While pushing down the protrusion,
In the direction in which the sliding door shoji is not braked, the protrusions of the link connecting body are moved so as not to be pushed down while the protrusions are approaching, abutting and separating from each other.
The first buffer is
After the second buffer operates, the sliding operation of the other end of the second link when the protrusion of the link coupling is pushed down by the abutting body is buffered (claim 4).

According to such a configuration, the same functions and effects as those of the invention according to claim 1 can be obtained.
In addition, in the direction of braking the sliding door shoji, when the sliding door shoji moves after the protrusion of the link connecting body of the first braking means comes into contact with the abutting body, the second buffer of the second braking means first operates. And brake the sliding door shoji. After the second braking means operates in this way, as the sliding door shoji moves, the protrusion of the link connecting body of the first braking means is pushed down by the abutting body, and the sliding operation of the other end of the second link is buffered. The first buffer operates so as to brake the sliding door shoji.
Therefore, since the braking force is large because such two-step braking is performed, it can be suitably used for applications in which the weight of the sliding door shoji is particularly large and the braking force is desired to be increased.

Here, the first buffer and the second buffer are
It is a linear damper in which a damping force is generated by contracting the piston rod from the extended state, and it is a preferable embodiment to include a return spring for returning the piston rod to the extended state (claim 5).

According to such a configuration, since the first buffer and the second buffer are linear dampers in which a damping force is generated by contracting the piston rod from the extended state, the buffer has a simpler structure. Therefore, the reliability is increased and the shape of the shock absorber becomes slimmer.
Further, since the piston rod of the linear damper is returned to the extended state by the return spring, after the protrusion of the link connecting body is pushed down by the contact body, the protrusion is not pushed down by the contact body. Then, the link connecting body of the first braking means surely returns to the original form, and the unit frame of the first braking means slides and surely returns to the original position in the substrate.

Further, by moving the position of the horizontal axis in which the other end of the first link swings in the opening / closing direction of the sliding door shoji with respect to the unit frame, the height of the protrusion of the link connecting body is increased. It is a more preferable embodiment to include the adjusting means for adjusting the height (claim 6).

According to such a configuration, the adjustment means moves the position of the horizontal axis in which the other end of the first link swings in the opening / closing direction to change the height of the protrusion of the link coupling, thereby changing the height of the second link. The stroke at which the other end of the link slides changes. Therefore, since the stroke of the sliding operation of the other end of the second link buffered by the first buffer changes, the braking force of the first braking means can be easily adjusted.

Further, the abutting body is
A hanging piece that swings around a horizontal axis orthogonal to the opening / closing direction of the sliding door shoji and has a roller at the tip that can rotate around a horizontal axis orthogonal to the opening / closing direction of the sliding door shoji.
In the direction of braking the sliding door shoji, a stop body that stops the hanging piece to prevent the hanging piece from swinging while the protrusions of the link connecting body approach, abut, and separate from each other.
It is an even more preferable embodiment (claim 7).

According to such a configuration, a hanging piece that can swing around a horizontal axis orthogonal to the opening / closing direction of the sliding door shoji is a main component of the abutting body, and in the direction of braking the sliding door shoji, the hanging piece It is a simple structure that prevents rocking with a sash. With such a simple structure, it is possible to construct an abutting body that pushes down the protrusion of the link connection in the direction of braking the sliding door shoji and moves so as not to push down the protrusion in the direction of not braking the sliding door shoji. The reliability of the operation of the contact is increased, and the manufacturing cost can be reduced.
In addition, since a roller is provided at the tip of the hanging piece, when the abutting body pushes down the protrusion of the link connecting body in the direction of braking the sliding door shoji, the roller is pressed by the roller while rotating. Then, the protrusion is pushed down, so that the operation of pushing down the protrusion is smooth and reliable.

According to the sliding door shoji brake device having the above configuration, the following effects are mainly obtained.
(1) The sliding door shoji can be braked stably and reliably compared to the configuration in which the sliding door shoji is braked by sliding friction force. (2) Since the degree of freedom to change the mounting position of the abutting body is large, the sliding door can be braked by the abutting body. The position where the shoji is braked can be easily changed, and a plurality of abutting bodies are arranged to enable the sliding door shoji to be braked both when the sliding door shoji is closed and when the sliding door is opened, or to increase the braking force. It's also easy.
(3) Since the shock absorber can be easily made into a slim form, the brake body is not easily restricted in size due to the width (thickness) of the sliding door shoji when ensuring the required performance.
(4) When operating the sliding door shoji in a direction that does not brake the sliding door shoji, the operating force can be reduced compared to the one in which a restoring force such as a coil spring acts in the direction opposite to the operating direction. Operability can be improved.

It is a perspective view which shows the brake device for sliding door shoji which concerns on Embodiment 1 of this invention. Similarly, it is a vertical cross-sectional front view showing a state in which the sliding door shoji is closed. Similarly, it is a front view of a vertical cross section, and shows a state immediately before the brake device operates when the sliding door shoji is closed. Similarly, it is a front view of a vertical cross section, showing a state in which the brake device is operating when the sliding door shoji is closed. It is an exploded perspective view of a braking body and an abutting body. It is an enlarged vertical sectional view of a main part of a sliding door shoji seen from the door tip side. It is a perspective view which shows the braking body of the brake device for sliding door shoji which concerns on Embodiment 2 of this invention. It is a vertical cross-sectional front view for operation explanation, (a) is a state just before the brake device operates when closing a sliding door shoji, (b) is a state where the operation of the second buffer body of the brake device is completed, (c). Indicates a state in which the first buffer of the braking device is operating.

Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited to the embodiments shown in the accompanying drawings, and includes all embodiments that satisfy the requirements described in the claims. It is a waste.
In this specification, the front-back and left-right directions are determined toward the closing direction of the sliding door shoji (see arrow J in the figure), and the view seen from the left is taken as the front view.

<Embodiment 1>
(Brake device)
As shown in the perspective view of FIG. 1 and the vertical sectional front view of FIGS. 2 to 4, the sliding door shoji S opens and closes, for example, an opening E which is an entrance / exit partitioned by a frame body A, and is the present invention. The brake device 1 for braking the sliding door shoji S according to the first embodiment is attached to a frame body A on the upper side of the opening E in which the braking body 2 attached to the upper surface of the sliding door shoji S and the upper part of the sliding door shoji S are engaged with each other. It is composed of an abutting body 3 to which the braking body 2 is attached.
The braking body 2 is a sliding door shoji S, for example, a base 4 attached to the upper surface on the door end side, a link connecting body L composed of a first link 11 and a second link 12 and the like housed in the base 4, and a shock absorber. With D.
In the direction in which the sliding door shoji S is braked (in the present embodiment, the closing direction J of the sliding door shoji S), the abutting body 3 is brought into contact with and separated from the protruding portion C projecting upward of the link connecting body L. In the meantime, push down the protrusion C. Further, in the direction in which the abutting body 3 does not brake the sliding door sash S (in the present embodiment, the opening direction I of the sliding door sash S), the abutting body 3 makes a protrusion C while the protrusion C approaches, abuts and separates. Move without pushing down (see the alternate long and short dash line in Fig. 2).

When the sliding door shoji S is opened as shown by the arrow I in FIG. 2 from the state where the sliding door shoji S is closed by such a braking device 1, the protruding portion C of the link connecting body L of the braking body 2 is in contact with the contact body. When it comes into contact with 3, the abutting body swings as shown by the two-point chain line in FIG. As a result, when the sliding door shoji S is opened from the closed state, the operating force can be reduced as compared with the case where a restoring force such as a coil spring acts in the direction opposite to the operating direction. Therefore, the operability of the sliding door shoji S can be improved.
Further, when the sliding door shoji S is closed as shown by the arrows J in FIGS. 3 and 4 from the state where the sliding door shoji S is opened, the protrusion C of the link connecting body L approaches and comes into contact with the contact body 3. During the separation, the protrusion C is pushed down as shown in FIG. As a result, the buffer D operates, so that the sliding door shoji D is braked.

(Brake body)
As shown in the vertical sectional front view of FIG. 2, the base 4 and the cover body 5 of the braking body 2 have mounting screws M and M in the through holes 5B and 5B of the cover body 5 and the through holes 4C and 4C of the base 4. It is fixed to the upper surface of the sliding door shoji S by inserting it from above and screwing it into the screw hole of the sliding door shoji S.

As shown in the vertical sectional front view of FIG. 2 and the exploded perspective view of FIG. 5, the through holes 11A of one end F1 of the first link 11 and the through holes 12A and 12A of one end G1 of the second link 12 are combined. By inserting the support shaft 7 in this state, the one end portion F1 of the first link 11 and the one end portion G1 of the second link 12 become the horizontal axis H1 (support shaft 7) orthogonal to the opening / closing direction of the sliding door shoji S. It is oscillatingly connected around.
The first link 8 is inserted by inserting the support shaft 8 in a state where the through holes 11B of the other end F2 of the first link 11, the through holes 6A and 6A of the adjusting member 6, and the elongated holes 4A and 4A of the base 4 are aligned. The other end F2 of the link 11 is supported by the substrate 4 so as to swing around the horizontal axis H2 (support axis 8) orthogonal to the opening / closing direction of the sliding door shoji S.
By inserting the support shaft 9 with the through holes 12B of the other end G2 of the second link 12 and the elongated holes 4B and 4B of the base 4 aligned, the other end G2 of the second link 12 becomes horizontal. It is supported by the base 4 so that it can slide in the opening / closing direction of the sliding door shoji S while rotating around the direction axis H3 (support axis 9).

As described above, the link connecting body L composed of the first link 11 and the second link 12 and the like has a protrusion C in which one end F1 of the first link 11 and one end G1 of the second link 12 project upward. It has a mountain-shaped shape when viewed from the horizontal direction orthogonal to the opening / closing direction of the sliding door shoji S, and the protrusion C projects upward from the upper surface opening 5A of the cover body 5.
Then, the tip of the piston rod 20A of the buffer D comes into contact with the other end G2 of the second link 12.
The shock absorber D is a linear damper (for example, a cylinder damper that dissipates kinetic energy by utilizing the resistance of a fluid) in which a damping force is generated by contracting the piston rod 20A from an extended state, and the piston rod 20A is in an extended state. It is provided with a return spring (not shown) that returns to. Such a return spring may be built in the cylinder or may be provided outside the cylinder.
When the protrusion C of the link connecting body L is pushed down by the abutting body 3 by such a shock absorber D as shown in FIG. 4, the other end portion G2 of the second link 12 with which the tip of the piston rod 20A abuts. The sliding operation (horizontal axis H3 orthogonal to the opening / closing direction of the sliding door shoji S) is buffered.

(Adjustment means)
As shown in the vertical sectional front view of FIG. 2 and the enlarged vertical sectional view of the main part of the sliding door shoji of FIG. 6 as viewed from the door end side, the braking body 2 is the other end portion F2 of the first link 11 (see FIG. 5). ) Is moved in the opening / closing directions I and J of the sliding door shoji S with respect to the base 4, thereby adjusting the height of the protrusion C of the link connecting body L. To be equipped. The main components of the adjusting means K are the adjusting screw 10 and the adjusting member 6.

The threaded portion of the adjusting screw 10 is located in the notch 5C of the cover body 5, and the head of the adjusting screw 10 engages with the cover body 5 and is positioned in the front-rear direction.
Since the adjusting screw 10 is screwed into the screw hole 6B of the adjusting member 6 from the front, the adjusting screw 10 is rotated to rotate the adjusting screw 10 in the front-rear direction (opening / closing direction I of the sliding door shoji S) of the through holes 6A and 6A of the adjusting member 6. , J) position can be changed.
Therefore, by rotating the adjusting screw 10, the support shaft 8 (see FIG. 5) moves in the front-rear direction along the elongated hole 4A of the base 4, so that the horizontal axis H2 (support shaft 8) is in the front-rear direction. You can change the position. Thereby, the height C of the link connecting body L can be adjusted. By adjusting the height of the protrusion C (distance between the horizontal axis H2 and the horizontal axis H3) by such an adjusting means K, the abutting body The stroke at which the other end G2 (horizontal axis H3) of the second link 12 that slides when the protrusion C is pushed down by 3 can be adjusted. Therefore, since the stroke at which the other end G2 (horizontal axis H3) of the second link 12 buffered by the shock absorber D slides changes, the braking force of the braking device 1 can be easily adjusted.

(Abutment body)
As shown in the front view of the vertical cross section of FIG. 2, the mounting plate 13 of the abutting body 3 is screwed into the screw hole of the frame body A by inserting the mounting screws N and N into the mounting holes 13A and 13A from below. As a result, it is fixed to the lower surface of the frame body (upper frame) A.

As shown in the vertical sectional front view of FIGS. 2 to 4 and the exploded perspective view of FIG. 5, the abutting body 3 swings around the horizontal axis H4 orthogonal to the opening / closing direction of the sliding door shoji S and reaches the tip. A hanging piece 14 having a roller 15 that can rotate around a horizontal axis H5 orthogonal to the opening / closing direction of the sliding door shoji S, and a direction for braking the sliding door shoji S (in the present embodiment, the closing direction J of the sliding door shoji S). Then, as shown in FIGS. 3 and 4, while the protrusions C of the link connecting body L approach, abut, and separate from each other, the hanging piece 14 is stopped to prevent the hanging piece 14 from swinging. And.
Insert the collar 16A into the through holes 14A and 14A of the hanging piece 14, and insert the support shaft 17 into the shaft holes 13B and 13B and the collar 16A with the collar 16A aligned with the shaft holes 13B and 13B of the mounting plate 13. As a result, the hanging piece 14 is swingably supported by the mounting plate 13 around the horizontal axis H4 (support axis 17).
By inserting the collar 16B into the roller 15 and inserting the support shaft 18 into the shaft holes 14B and 14B and the collar 16B with the collar 16B aligned with the shaft holes 14B and 14B of the hanging piece 14, the roller 15 hangs down. At the tip (lower end) of the piece 14, the hanging piece 14 is rotatably supported around the horizontal axis H5 (support shaft 18).

When the sliding door shoji S is closed as shown by the arrows J in FIGS. 3 and 4 from the state where the sliding door shoji S is opened, the hanging piece 14 is stopped by the retaining body 19 even if it is pushed in the direction of the arrow J. Therefore, the swing is prevented.
Further, when the sliding door shoji S is opened as shown by the arrow I in FIG. 2 from the state where the sliding door shoji S is closed, the hanging piece 14 is horizontal as shown by the alternate long and short dash line in FIG. It swings around the direction axis H4 (support axis 17).

According to the brake device 1 for braking the sliding door sash S of the first embodiment, the abutting body 3 pushes down the protrusion C of the link connecting body L of the braking body 2 in the direction of braking the sliding door sash S. Since the buffer D of the braking body 2 buffers the operation of the other end G2 of the sliding second link 12 (horizontal axis H3 orthogonal to the opening / closing direction of the sliding door shoji S), the sliding friction force causes the sliding door shoji S. Compared with the braking configuration, the sliding door shoji S can be braked stably and reliably. In addition, the abutting body 3 attached to the frame body A side has a function of pushing down the protrusion C of the link connecting body L of the braking body 2. Since the length of the sliding door shoji S in the opening / closing direction is short, the degree of freedom in changing the mounting position is large. Therefore, the position where the sliding door shoji S is braked can be easily changed, and the sliding door shoji S can be braked both when the sliding door shoji S is closed and when the sliding door shoji S is opened, or in order to increase the braking force. It is also easy to arrange the contacts 3, 3, ....
Further, the shock absorber D of the brake body 2 buffers the operation of the other end portion G2 of the second link 12 which slides when the contact body 3 pushes down the protrusion C of the link coupling body L of the brake body 2. Since the shock absorber D is easily formed into a slim form due to the configuration, the brake body 2 is less likely to be restricted in size due to the width (thickness) of the sliding door obstacle S when ensuring the required performance.

Moreover, since the shock absorber D is a linear damper in which a damping force is generated by contracting the piston rod 20A from the extended state, the structure is simple and the reliability is improved, and the form of the shock absorber D is further improved. Become slim.
Further, since the piston rod 20A of the linear damper is returned to the extended state by the return spring, after the protrusion C of the link connecting body L is pushed down by the contact body 3, the protrusion C is pushed down by the contact body 3. When it is not pushed down, the link connecting body L surely returns to the original form.

Further, the hanging piece 14 swingable around the horizontal axis H4 orthogonal to the opening / closing direction of the sliding door shoji S is the main component of the abutting body 3, and the hanging piece 14 is in the direction of braking the sliding door shoji S. It has a simple structure in which rocking is blocked by the retaining piece 19. With such a simple structure, the contact body 3 that moves so as not to push down the protrusion C of the link connecting body L in the direction of braking the sliding door shoji S and not to push down the protrusion C in the direction of not braking the sliding door shoji S. Since it can be configured, the operation reliability of the contact body 3 can be improved, and the manufacturing cost can be reduced.
Further, since the roller 15 is provided at the tip of the hanging piece 14, the roller 15 rotates when the abutting body 3 pushes down the protrusion C of the link connecting body L in the direction of braking the sliding door shoji S. While pressing the protrusion C with the roller 15, the protrusion C is pushed down, so that the operation of pushing down the protrusion C is smooth and reliable.

<Embodiment 2>
(Brake device)
FIG. 7 is a perspective view showing a braking body 2 of the sliding door shoji brake device 1 according to the second embodiment of the present invention, and FIG. 8 is a vertical sectional front view for explaining the operation of the braking body 2.
In FIGS. 7 and 8, the same reference numerals as those in FIGS. 1 to 5 of the first embodiment indicate the same or corresponding parts or parts.

The braking body 2 of the sliding door shoji brake device 1 according to the second embodiment includes a base 4 attached to the sliding door shoji S, a first braking means B1 and a second braking means B2 housed in the base 4. ..
The first braking means B1 has the same configuration as the braking body 2 of the first embodiment, and is housed in a unit frame 21 that can slide in the base 4 in the opening / closing direction of the sliding door shoji S and in the unit frame 21. A link connector L composed of a first link 11 and a second link 12 and the like, and a first buffer D1 are provided.
The link connecting body L is the same as the link connecting body L of the first embodiment, and is provided in the unit frame 21 instead of in the base 4 as in the first embodiment.
When adjusting the braking force of the first braking means B1, the height of the protrusion C of the link connecting body L is increased by moving the position of the horizontal axis H2 in the opening / closing direction of the sliding door shoji S with respect to the unit frame 21. The same configuration as that of the adjusting means K of the first embodiment can be adopted.
The second braking means includes a second buffer D2 housed in a case 22 integrated with the substrate 4, and the second buffer D2 buffers the sliding operation of the unit frame 21 with respect to the substrate 4.

The first buffer D1 and the second buffer D2 are linear dampers in which a damping force is generated by contracting the piston rods 20A and 20B from the extended state, and the piston rods 20A and 20B are returned to the extended state, which is not shown. It is equipped with a return spring.
Further, the damping force of the second buffer D2 is set smaller than the damping force of the first buffer D1.
Since the second buffer D2 has a long stroke and a small damping force, the second buffer D2 may be a combination of a rotary tambor and a rack instead of a linear damper.

(Operation of the first braking means and the second braking means)
When the sliding door shoji S moves in the closing direction J and the protrusion C of the link connecting body L shown in FIG. 8A abuts on the abutting body 3, the sliding door shoji S further moves in the closing direction J. As shown in FIG. 8B, the piston rod 20B first contracts and the second buffer D2 operates.
Then, after the second buffer D2 operates and before the protrusion C separates from the contact body 3, the protrusion C is pushed down by the contact body 3 as shown in FIG. 8C. The piston rod 20A contracts and the first buffer D1 operates.

According to the brake device 1 for braking the sliding door sash S of the second embodiment, the same operation and effect as the brake device 1 for braking the sliding door sash S of the first embodiment is obtained.
Further, in the direction of braking the sliding door shoji S, when the sliding door shoji S moves after the protrusion C of the link connecting body L of the first braking means B1 comes into contact with the abutting body 3, the second braking means B2 first. The second buffer D2 of the above operates to brake the sliding door shoji S. After the second braking means B2 operates in this way, as the sliding door shoji S moves, the protrusion C of the link connecting body L of the first braking means B1 is pushed down by the abutting body 3, and the other of the second link 12 The first buffer D1 operates so as to buffer the sliding operation of the end portion G2 (horizontal axis H3 orthogonal to the opening / closing direction of the sliding door shoji S) to brake the sliding door shoji S.
Therefore, since the braking force is large because such two-step braking is performed, it can be suitably used for applications in which the weight of the sliding door shoji S is particularly large and the braking force is desired to be increased.

The brake device 1 for braking the sliding door shoji S of the first and second embodiments as described above can be used so as to act on at least one of the closing and opening of the sliding door shoji S.

A frame body B1 1st braking means B2 2nd braking means C protrusion D buffer D1 1st buffer D2 2nd buffer E opening F1 one end F2 other end G1 one end G2 other end H1, H2 H3, H4 Horizontal axis I Sliding door obstacle opening direction J Sliding door obstacle closing direction K Adjusting means L Link connector M, N Mounting screw S Sliding door obstacle 1 Brake device 2 Braking body 3 Abutment body 4 Base 4A, 4B Long hole 4C Mounting hole 5 Cover body 5A Top opening 5B Through hole 5C Notch 6 Adjusting member 6A Through hole 6B Screw hole 7, 8, 9 Support shaft 10 Adjusting screw 11 1st link 11A, 11B Through hole 12 2nd link 12A, 12B through Hole 13 Mounting plate 13A Mounting hole 13B Shaft hole 14 Hanging piece 14A Through hole 14B Shaft hole 15 Roller 16A, 16B Color 17, 18 Support shaft 19 Stopper 20A, 20B Piston rod 21 Unit frame 22 Case

Claims (7)

A braking device that brakes the sliding door shoji, which acts on at least one of the closing and opening of the sliding door shoji.
The braking body attached to the upper surface of the sliding door shoji and
An abutting body to which the braking body abuts, which is attached to a frame body on the upper side of the opening to which the upper part of the sliding door shoji engages,
Consists of
The braking body is
The base to be attached to the sliding door shoji and
A link connector composed of a first link and a second link, and a buffer, which are housed in the substrate,
With
The link conjugate
One end of the first link and one end of the second link are swingably connected around a horizontal axis orthogonal to the opening / closing direction of the sliding door shoji, and the one end becomes a protrusion protruding upward. It forms a mountain shape when viewed from the horizontal direction orthogonal to the opening and closing direction of the sliding door shoji.
The other end of the first link is supported by the substrate and supported by the substrate so that it can swing around a horizontal axis orthogonal to the opening / closing direction of the sliding door shoji.
The other end of the second link is supported by the substrate so that it can slide in the opening / closing direction of the sliding door shoji.
The abutting body is
In the direction of braking the sliding door shoji, while the protrusions of the link connecting body approach, abut, and separate from each other, the protrusions are pushed down and the protrusions are pushed down.
In the direction in which the sliding door shoji is not braked, the protrusions of the link connecting body are moved so as not to be pushed down while the protrusions are approaching, abutting and separating from each other.
The buffer is
When the protrusion of the link coupling is pushed down by the abutting body, the sliding operation of the other end of the second link is buffered.
Brake device for sliding door shoji. The buffer is
It is a linear damper in which a damping force is generated by contracting the piston rod from the extended state, and includes a return spring for returning the piston rod to the extended state.
The brake device for sliding door shoji according to claim 1. The height of the protrusion of the link coupling is adjusted by moving the position of the horizontal axis in which the other end of the first link swings in the opening / closing direction of the sliding door shoji with respect to the substrate. Equipped with adjustment means to
The brake device for sliding door shoji according to claim 1 or 2. A braking device that brakes the sliding door shoji, which acts on at least one of the closing and opening of the sliding door shoji.
The braking body attached to the upper surface of the sliding door shoji and
An abutting body to which the braking body abuts, which is attached to a frame body on the upper side of the opening to which the upper part of the sliding door shoji engages,
Consists of
The braking body is
The base to be attached to the sliding door shoji and
The first braking means and the second braking means housed in the substrate,
With
The first braking means is
A unit frame that can slide in the substrate in the opening / closing direction of the sliding door shoji,
A link connector composed of a first link and a second link, and a first buffer, which are housed in the unit frame,
With
The link conjugate
One end of the first link and one end of the second link are swingably connected around a horizontal axis orthogonal to the opening / closing direction of the sliding door shoji, and the one end becomes a protrusion protruding upward. It forms a mountain shape when viewed from the horizontal direction orthogonal to the opening and closing direction of the sliding door shoji.
The other end of the first link is supported by the unit frame and supported by the unit frame so that it can swing around a horizontal axis orthogonal to the opening / closing direction of the sliding door shoji.
The other end of the second link is supported by the unit frame so that it can slide in the opening / closing direction of the sliding door shoji.
The second braking means is
A second buffer that buffers the sliding operation of the unit frame is provided.
The abutting body is
In the direction of braking the sliding door shoji, when the protrusions of the link connection come into close contact with each other, after the second buffer operates, the protrusions of the link connection are separated from each other. While pushing down the protrusion,
In the direction in which the sliding door shoji is not braked, the protrusions of the link connecting body are moved so as not to be pushed down while the protrusions are approaching, abutting and separating from each other.
The first buffer is
After the second buffer operates, the sliding operation of the other end of the second link when the protrusion of the link coupling is pushed down by the abutting body is buffered.
Brake device for sliding door shoji. The first buffer and the second buffer are
It is a linear damper in which a damping force is generated by contracting the piston rod from the extended state, and includes a return spring for returning the piston rod to the extended state.
The brake device for sliding door shoji according to claim 4. By moving the position of the horizontal axis in which the other end of the first link swings in the opening / closing direction of the sliding door shoji with respect to the unit frame, the height of the protrusion of the link connecting body is increased. Equipped with adjustment means to adjust,
The brake device for sliding door shoji according to claim 4 or 5. The abutting body is
A hanging piece that swings around a horizontal axis orthogonal to the opening / closing direction of the sliding door shoji and has a roller at the tip that can rotate around a horizontal axis orthogonal to the opening / closing direction of the sliding door shoji.
In the direction of braking the sliding door shoji, a stop body that stops the hanging piece to prevent the hanging piece from swinging while the protrusions of the link connecting body approach, abut, and separate from each other.
To prepare
The brake device for sliding door shoji according to any one of claims 1 to 6.

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