JP4250565B2 - Sliding door slide assist device - Google Patents

Description

  The present invention relates to a sliding door slide assist device that applies an assist force in a closing direction or an opening direction to a sliding door that slides left and right within a door frame to open and close an opening.

  This slide assist device is generally used as an automatic closing device for sliding doors (including suspension door type). It is comprised so that it may add (for example, refer patent document 1).

In this case, for the purpose of making the device as small as possible and facilitating incorporation into the sliding door, the spring force is not applied through the entire stroke of the sliding door, but only through the latter half of the stroke via the spring force transmission mechanism. A system (hereinafter referred to as a partial assist system; see, for example, Patent Document 2) is known.

The spring force transmission mechanism in this partial assist type device is composed of, for example, a slide member provided on one end side of the pull spring and a receiving member provided on the door frame side, and at the time of sliding in the opening direction of the sliding door, Push the slide member with the receiving member to extend the pulling spring, rotate the sliding member in the extended state and stop at that position, and rotate the sliding member to the original posture by the receiving member in the second half of the stroke when sliding in the closing direction Thus, the pulling spring is released, and the spring force (more precisely, the spring reaction force) is applied to the sliding door as an assist force in the closing direction.
Japanese Utility Model Publication No. 57-77570 JP 2003-138828 A

In certain such assisted method for performing expansion and release operation of the spring and the door frame side accepted part material and the sliding door side of the slide member constituting the spring force transmission mechanism is disengaged, the both It is assumed that the vertical positional relationship of the members is constant. In other words, the engagement / disengagement operation is not performed well even if both are too far apart or too close.

However, in the conventional apparatus, since the sliding door side of the slide member is incorporated integrally with the sliding door, when the vertical position adjustment when the sliding door installation (performed by the guide roller to adjust the vertical position), the sliding door At the same time, the vertical position of the slide member varies.

When this happens, since would change even vertical positional relationship between the slide member and the accepted part material, there is a problem that detachment action (spring force transduction activity) is not performed well.

Further, in the case of a wooden sliding door, warpage and bending due to long-term use occur, and this also causes the vertical positional relationship between the two members to be out of order and cause a malfunction.

Although it is theoretically possible to adjust the position of the slide member alone, it is not performed because it is actually very troublesome.

SUMMARY OF THE INVENTION Accordingly, the present invention provides a sliding door slide assist device that can maintain the desired spring force transmission action by always maintaining the vertical positional relationship between the slide member and the receiving member of the spring force transmission mechanism in the partial assist method. To do.

The invention of claim 1 is a sliding assist device for a sliding door that applies a sliding assist force in an opening direction or a closing direction to a sliding door that slides within the door frame, and a guide rail that is attached horizontally to the door frame; A guide roller attached to the sliding door via a roller support so as to roll in the guide rail, a frame connected to the roller support, and one end accommodated in the frame in a free state. and a tension spring, includes a spring force transmission mechanism for applying a sliding assist force the spring force of the pulling spring sliding door between the middle way of the stroke of the sliding door to the stroke end point, the spring force transmission mechanism follows It has requirements .

  (A) A guide groove is provided in the frame body, and a window hole is provided on the terminal end side of the guide groove.

  (B) a slide member attached to the free spring end of the pulling spring so as to be able to slide along the guide groove so as to be rotatable about a horizontal axis, and to the guide rail on the slide member side And a receiving member provided toward the side.

  (C) The slide member is provided with first and second locking surfaces that are selectively locked to the receiving member by the rotation of the member.

  (D) At the time of sliding in one direction of the sliding door, when the pulling spring is extended by the first locking surface of the sliding member being locked to the receiving member, and the sliding member reaches the window hole of the guide groove When the member rotates, the first locking surface is detached from the receiving member, and the slide member is stopped and held at the end portion of the guide groove. When the sliding member slides in the opposite direction of the sliding door, When the stop surface is locked to the receiving member, the slide member is rotated to the original posture to release the pulling spring, and the restoring force is applied to the sliding door via the slide member and the frame. Be configured to be added as.

  According to a second aspect of the present invention, in the configuration of the first aspect, the guide rollers are provided on both the left and right sides of the sliding door, and the frame body is connected to the one-side roller support body in a free-standing cantilever state. An auxiliary support that supports the free side end while moving in the guide rail is provided at the free side end of the frame.

According to a third aspect of the present invention, in the configuration of the first or second aspect, the spring force transmission mechanism is configured to apply the spring force of the pull spring to the sliding door as a slide assist force when the sliding door slides in the closing direction. .

According to a fourth aspect of the present invention, in the structure of any one of the first to third aspects, the tension spring is housed in a cylinder configured to be extendable and contractable by the outer cylinder and the inner cylinder, and one end is the outer cylinder and the other end And the cylinder is accommodated in the frame body in a state where one end is free, and a spring force transmission mechanism is provided between the free end of the cylinder and the guide rail. A force is applied to the sliding door as a slide assist force.

According to a fifth aspect of the present invention, in the configuration of the fourth aspect , the cylinder is configured as an air damper that absorbs and discharges air in response to expansion and contraction and applies resistance to the discharged air to weaken the slide assist force .

According to the present invention as described above, embedded in one direction slide member is a member of the sliding door side of the spring force transmission mechanism for assisting in (closing direction in claim 3) to the sliding door inside the frame, the frame Is attached to the roller support as a unit integrated with the guide roller, so that the vertical position relationship between the sliding door and the door frame can be adjusted by adjusting the vertical position when the sliding door is installed in the door frame, or by changing the vertical position due to warpage or deflection of the wooden sliding door. be varied, the vertical positional relationship between the accepted part material of the sliding door side of the slide member and the door frame side is kept constant.

For this reason, the spring force transmission action is always performed reliably. Or, the trouble of adjusting the vertical position of the slide member in accordance with the vertical position adjustment or deformation of the sliding door is eliminated.

In addition, since the slide member is incorporated into the sliding door as a unit integrated with the guide roller, it is easy to incorporate into the sliding door.

  In this case, according to the second aspect of the present invention, the frame is connected to the left and right roller supports in a free cantilever state, and the free end of the frame is supported by the auxiliary roller. Therefore, unlike the case where the frame is attached between the both-side roller support pairs in a state where both ends are fixed, it is not necessary to change the length of the frame (the entire apparatus) even if the width dimension of the sliding door changes. That is, this apparatus can be used as a common part for sliding doors of various sizes.

According to the fourth and fifth aspects of the present invention, since the tension spring is built in the cylinder, the spring can be protected to prevent deterioration and damage. Further, since the cylinder is attached to the frame and the sliding door member of the spring force transmission mechanism is attached to the cylinder, the assembly is further facilitated.

In particular, according to the invention of claim 5 , since the cylinder is configured as an air damper that gently slides the sliding door, and the air damper and the pulling spring are configured as an integrated body, the apparatus can be reduced in size and can be incorporated into the sliding door. It becomes even easier.

  In the following embodiments, a slide assist device that is incorporated in a sliding door type sliding door and performs a slide assist action in the closing direction is taken as an example.

1 and 2, reference numeral 1 denotes a door frame. The sliding door 2 slides left and right in the door frame 1 to open and close the opening. 1 and 2 show a state in which the sliding door 2 is closed. From this state, the sliding door 2 slides to the left side of the drawing and opens.

In this slide structure, the guide rail 3 is mounted horizontally on the upper side of the door frame 1, while the upper and lower sides of the sliding door 2 have two pairs of left and right pairs (front and rear).
Guide rollers 4, 5... Are attached via roller supports 6, 7, and the guide rollers 4, 5.

The left and right roller supports 6 and 7 are attached to the sliding door 2 through vertical adjustment mechanisms 8 and 9 (only the frame is shown in the figure). When the sliding door 2 is installed, the vertical adjustment mechanisms 8 and 9 guide the guide rollers. 4, 5..., That is, the vertical position of the sliding door 2 is adjusted according to the door frame 1.

  One end side of the frame body 10 is connected to the roller support body 7 on the right side (closed end portion) of the figure, and the frame body 10 is supported in a cantilever state with one end free.

  As shown in FIG. 7 and the like, the frame body 10 is formed in a hollow rectangular tube shape by joining the lower frame 11 and the upper frame 12 facing each other in a U-shaped cross-section, and the free side A pair of front and rear auxiliary rollers 13 and 13 as auxiliary supports are attached to the ends of the two.

The auxiliary rollers 13, 13 roll together with the guide rollers 4, 5... In the guide rail 3, and the auxiliary roller 13, 13 supports the free end of the frame body 10 on the guide rail 3.

Note that a sliding member that slides in the guide rail 3 may be provided as an auxiliary support, instead of the auxiliary rollers 13 and 13.

As described above, the left and right guide rollers 4, 5, the frame 10, and the auxiliary rollers 13, 13 are incorporated into the guide rail 3, and the sliding door 2 is moved to the door frame 1 by the guide rollers 4, 5. While being slidably suspended, the frame 10 is configured to slide to the left and right within the guide rail 3 integrally with the sliding door 2.

  A cylinder 14 is provided in the frame 10.

As shown in FIGS. 8 and 9, the cylinder 14 is configured such that the inner cylinder 15 and the outer cylinder 16 are phase-fitted so as to be telescopically extendable, and the end of the outer cylinder 16 is the free side end of the frame body 10. By being fastened to the part, the cylinder 14 is mounted in the frame 10 in a cantilever state in which one end is free.

  A pulling spring (tensile coil spring) 17 is accommodated in the cylinder 14, and its one end is fixed to the end of the inner cylinder 15 and the other end is fixed to the end of the outer cylinder 16 as shown in FIG. The spring force of the tension spring 17 is configured to act in the cylinder reduction direction.

  On the other hand, as shown in FIGS. 8 and 9, a piston 18 is provided at the end of the inner cylinder 15 of the cylinder 14 on the outer cylinder side, and an end cap 19 is provided at the tip of the outer cylinder 16, respectively. Air vent passages 20 and 21 are provided on the inner peripheral side of the end cap 19 to discharge air while restricting the air.

  Further, a check valve 24 comprising an air suction passage 22 and a ball 23 for opening and closing the air intake passage 22 is provided on the proximal end side of the outer cylinder 16, and the ball 23 is moved to the right side of FIG. The air intake passage 22 is opened and the outside air is sucked into the cylinder 14.

The air sucked into the cylinder 14 is discharged to the outside through the air vent passages 20 and 21 when the cylinder is contracted (when the pull spring is contracted), and the restoring force of the pull spring 17 is suppressed by the discharge resistance at this time. The cylinder 14 is gradually reduced.

  That is, the cylinder 14 is configured as an air damper that gently closes the sliding door 2.

  The spring force transmission mechanism that transmits the spring force of the pulling spring 17 to the sliding door 2 includes a sliding member 25 on the sliding door side and a receiving member 26 on the door frame side.

  The slide member 25 is slidably accommodated in the frame body 10 in a state where the slide member 25 is attached to the free end side of the cylinder 14 (the distal end side of the inner cylinder 15) so as to be rotatable around the horizontal shaft 27.

  The slide member 25 has a wide protrusion 28 protruding upward on the upper surface side as shown in an enlarged view in FIG. 10, and the protrusion 28 is formed by the frame body 10 (upper frame) as shown in FIGS. 12) slide along the guide groove 29 in a state of protruding outward from the guide groove 29 provided in the right half of the upper surface portion.

  A wide window hole 29a into which the protrusion 28 fits is provided at the end portion of the guide groove 29. When the protrusion 28 reaches the window hole 29a, the entire slide member 25 rotates downward around the horizontal shaft 27. Move. Thereby, the projection 28 is locked to the end surface of the guide groove 29, and the slide member 25 is stopped and held at this position.

  The projection 28 is formed in a substantially trapezoidal shape in a side view, and a first locking surface 30 is provided on one side of the projection 28, and a second locking surface 31 is provided continuously on the skirt portion of the projection 28.

  On the other hand, the receiving member 26 protrudes from the intermediate portion of the guide rail 3 as a downward shaft, and this receiving member 26 is provided on the first locking surface 30 of the protrusion 28 when the sliding door 2 is opened, and on the second engagement when closed. It latches to the stop surface 31, respectively.

  Next, the operation of this apparatus including the operation of this point will be described.

When the sliding door 2 is closed, the cylinder 14 (the pulling spring 17) is contracted as shown in FIGS. 1 and 2, and the slide member 25 is located at the start end of the guide groove 29. At this time, the receiving member 26 is locked to the first locking surface 30 of the projection 28 of the slide member 25.

When the sliding door 2 is opened from this state as shown in FIG. 3, the frame body 10 and the cylinder 14 slide in the guide rail 3 integrally with the sliding door 2, and as shown in FIGS.
The cylinder 14 begins to expand while moving in the guide groove 29 in a form that is pushed by the receiving member 26 through the protrusion 28.

  FIG. 5 shows a state in which the slide member 25 has moved to the end portion of the guide groove 29. At this time, the slide member 25 is rotated in the window hole 29a by the pressing force from the receiving member 26 and locked to the end surface of the guide groove. To do.

  As a result, the slide member 25 is stopped and held, the first locking surface 30 of the projection 28 is detached from the receiving member 26, and the entire slide member 25 passes below the receiving member 26, and the remaining section together with the sliding door 2. To move.

  At this time, the second locking surface 31 of the protrusion 25 protrudes out of the guide groove 29 and is ready to wait for the closing operation of the sliding door 2.

  Thereafter, when the sliding door 2 is slid in the closing direction, the second locking surface 31 of the projection 28 of the sliding member 25 is locked and pushed by the receiving member 26 with an intermediate stroke as shown in FIG. The member 25 rotates toward the original posture.

  In this way, the member 25 is released from the stopped holding state (the pull spring 17 is released), while the first locking surface 30 of the protrusion 28 is locked to the receiving member 26.

  Then, the spring force of the pulling spring 17 is received by the receiving member 26, and the spring reaction force is applied to the sliding door 2 through the frame 10 as a closing direction force (sliding assist force) in the remaining stroke. At this time, the air damper action of the cylinder 14 described above works.

  As a result, the sliding door 2 automatically and gently slides to the closed position, and the cylinder 14 contracts and the slide member 25 returns to the original position shown in FIGS.

  The above action is repeated each time the sliding door 2 is opened and closed, and a sliding assist action in the closing direction is performed.

  By the way, when a vertical dimension error occurs in the door frame 1 and the sliding door 2 due to a construction error or the like of the building, the vertical position of the sliding door 2 as shown by a double line arrow in FIG. Needs to be adjusted to match the door frame 1.

This adjustment is performed by moving the guide rollers 4, 5... Up and down by operating the vertical adjustment mechanisms 8, 9 of the sliding door 2 (for example, adjusting screws).

In this case, conventionally, since the sliding spring and the sliding door side member of the spring force transmission mechanism (slide member 25 in the above embodiment) are integrated into the sliding door and move up and down together with the sliding door, There is a possibility that the vertical position relationship (interval) of the door frame side member (same as the receiving member 26) is incorrect, and the engagement / disengagement of both is not performed well.

  Further, in the case of a wooden sliding door, warpage and bending due to long-term use occur, and this also causes the vertical positional relationship between the sliding door side and door frame side members to be out of order and cause malfunctions.

On the other hand, according to this device, the cylinder 14 with the pulling spring 17 and the slide member 25 which is the sliding door side member of the spring force transmission mechanism are incorporated in the frame body 10, and the frame body 10 is inserted into the guide rollers 4. As a unit integrated with the roller support 7 on one side, the sliding door 2 and the door frame 1 can be adjusted by adjusting the vertical position when the sliding door 2 is assembled into the door frame 1 or by changing the vertical position due to warping or deflection of the wooden sliding door. The vertical position of the frame 10 and the guide rollers 4 ... , 5 ... Does not change, and therefore the vertical position of the slide member 25 does not change. For this reason, the vertical positional relationship between the slide member 25 and the receiving member 26 is kept constant.

  For this reason, the spring force transmission action is always performed reliably. Or, the trouble of adjusting the vertical position of the slide member 25 in accordance with the vertical position adjustment or deformation of the sliding door 2 is eliminated.

Further, the tension spring 17 is housed in the cylinder 14, a slide member 25 is attached to the cylinder 14, and these are assembled in the frame body 10, and the set of mechanisms is integrated with the guide rollers 4, 5. Since the structure incorporated in 2 is taken, the assembly of the apparatus and the incorporation into the sliding door 2 are simplified.

  In addition, since the cylinder 14 is configured as an air damper that gently slides the sliding door 2 and the cylinder 14 and the pulling spring 17 are configured as an integrated body, the apparatus can be reduced in size and further incorporated into the sliding door 2. It will be easy.

  Furthermore, since the tension spring 17 is built in the cylinder 14, the tension spring 17 can be protected to prevent deterioration and damage.

Other embodiments
(1) Although the case where the spring force of the pulling spring 17 is applied as a slide assist force in the closing direction of the sliding door 2 has been described in the above embodiment, the present invention is also applied as a device that applies the spring force in the opening direction of the sliding door 2. be able to.

  (2) In the above-described embodiment, the tension spring 17 is accommodated in the cylinder 14 as an air damper. However, these may be separated and installed separately.

  (3) Although the suspension door type sliding door is illustrated as an application object in the above embodiment, the present invention can also be applied to a normal sliding door that supports the sliding door weight under the door frame.

It is a partial cross section front view which shows the slide assist apparatus concerning embodiment of this invention. It is a figure which expands and shows a part of FIG. It is a figure which expands and shows a part of FIG. 2 further about the state in the middle of opening of a sliding door. FIG. 4 is a view corresponding to FIG. 3 in a state where the sliding door is further slid in the opening direction from the state of FIG. 3. FIG. 5 is a view corresponding to FIG. 3 in a state where the sliding door is further slid in the opening direction from the state of FIG. 4. It is FIG. 3 equivalent view which shows the state in the middle of closing a sliding door. It is a disassembled perspective view of a slide assist apparatus. It is a perspective view of the cylinder of the apparatus. It is the same expanded sectional view. It is an expansion perspective view of the slide member of the same apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door frame 2 Sliding door 3 Guide rail 4 ..., 5 ... Guide roller 6,7 Roller support body 8,9 Vertical adjustment mechanism 10 Frame body 11 Lower frame frame 12 Same upper frame 13 Auxiliary roller 14 as an auxiliary support body 14 Air damper Cylinder 15 as cylinder 16 outer cylinder 17 pulling spring 20, 21 air vent passage 24 check valve 25 slide member 30 first locking surface 31 of sliding member 31 second locking surface 26 receiving member 29 guide Groove 29a Window hole

Claims (5)

A sliding door slide assist device that applies a sliding assist force in an opening direction or a closing direction to a sliding door that slides in a door frame, the guide rail being mounted horizontally on the door frame, and rolling in the guide rail A guide roller attached to the sliding door via a roller support, a frame connected to the roller support, a pulling spring housed in a free state in the frame, a sliding door characterized in that the spring force of the pull spring between the middle way of the stroke to the stroke end point; and a spring force transmission mechanism for applying a sliding assist force to the sliding door, the spring force transmission mechanism with the following requirements Sliding door slide assist device.
(A) A guide groove is provided in the frame body, and a window hole is provided on the terminal end side of the guide groove.
(B) a slide member attached to the free spring end of the pulling spring so as to be able to slide along the guide groove so as to be rotatable about a horizontal axis, and to the guide rail on the slide member side And a receiving member provided toward the side.
(C) The slide member is provided with first and second locking surfaces that are selectively locked to the receiving member by the rotation of the member.
(D) At the time of sliding in one direction of the sliding door, when the pulling spring is extended by the first locking surface of the sliding member being locked to the receiving member, and the sliding member reaches the window hole of the guide groove When the member rotates, the first locking surface is detached from the receiving member, and the slide member is stopped and held at the end portion of the guide groove. When the sliding member slides in the opposite direction of the sliding door, When the stop surface is locked to the receiving member, the slide member is rotated to the original posture to release the pulling spring, and the restoring force is applied to the sliding door via the slide member and the frame. Be configured to be added as.   2. The sliding door slide assist device according to claim 1, wherein guide rollers are provided on both left and right sides of the sliding door, and the frame body is connected to a roller support on one side in a free-standing cantilevered state. A sliding assist device for a sliding door, characterized in that an auxiliary support for supporting the free side end while moving in the guide rail is provided at the free side end of the sliding door. 3. The sliding door slide assist device according to claim 1, wherein the spring force transmission mechanism is configured to apply the spring force of the pulling spring to the sliding door as a slide assist force when the sliding door slides in the closing direction. Slide assist device for sliding doors. 4. The sliding door slide assist device according to claim 1, wherein the pulling spring is housed in a cylinder configured to be extendable and contractable by an outer cylinder and an inner cylinder, and one end thereof is the outer cylinder. The end is fixed to the inner cylinder, and the cylinder is housed in the frame in a state where the end is free. A spring force transmission mechanism is provided between the free end of the cylinder and the guide rail . A sliding assist device for a sliding door, characterized in that a spring force is applied to the sliding door as a sliding assist force. 5. The sliding door sliding assist device according to claim 4, wherein the cylinder is configured as an air damper that absorbs and discharges air in response to expansion and contraction and applies resistance to the exhausted air to weaken the sliding assist force . Slide assist device .

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