JP2525673B2 - Sliding door closer for a transmission body - Google Patents

Description

Description: [Industrial field of use] The present invention relates to a device for pressing a transmission body in a sliding door closer provided in a self-closing sliding door.

[Problems to be Solved by Prior Art and Invention] Generally, in this type of self-closing sliding door, a closing force is stored in a mainspring spring installed in a drum in association with the opening operation of the sliding door, and the closing force is increased. There is a so-called sliding door closer that automatically closes the sliding door. As the sliding door closer, as shown in FIG. 7 and FIG. 8, the drum b is rotated by the opening / closing operation of the sliding door via the timing belt (transmission body) a connected to the sliding door, The rotating shaft c that fixes the drum b rotates, and the piston e that is screwed into the male screw portion d of the rotating shaft c slides in the axial direction. That is, when the sliding door is opened, the rotation of the drum b in the direction of arrow f (clockwise direction) causes the piston e to slide to the right in FIG. 8, and the piston rear chamber h of the cylinder g.
The hydraulic oil inside flows into the piston rear chamber i through a check valve (not shown) provided inside the piston e, and when the sliding door is closed, by the closing force stored in the mainspring spring j installed in the drum b. The drum b rotates in the direction of the arrow f '(counterclockwise direction) shown in the drawing, the piston e slides to the left in FIG. 8, and the hydraulic oil in the piston front chamber i moves to the speed adjusting valve k.
It is known that the closing speed is controlled by flowing to the piston rear chamber h while being controlled by the.

However, conventionally, in the sliding door closer in which the closing speed is hydraulically controlled as described above, the sliding door has the mainspring spring j when the door is closed.
When it is forcibly closed by external force in addition to the door closing force by
The oil pressure in the piston front chamber i rises sharply and the piston e
Since the sliding of the timing belt a is suppressed, the rotation of the drum b is also suppressed accordingly, so that the timing belt a floats, which may cause the timing belt a to shift or come off the drum b. However, reliability was a problem.

[Means for Solving the Problems] The present invention has been conceived in view of the above circumstances, and was devised with the object of providing a device for pressing a transmission body in a sliding door closer that can eliminate these drawbacks. In a sliding door closer that uses a long transmission body to transmit the driving force of the sliding door, a pressing member that presses the floating body of the transmission body from the drum is arranged near the transmission body suspended on the drum of the sliding door closer body. The mounting bracket of the sliding door closer is provided with a mounting portion of the pressing member which is point-symmetrical with respect to the center of drum rotation as a symmetry point.

With this configuration, the present invention can reliably prevent a defect such as a shift of the transmission body or a disengagement of the transmission body, thereby significantly improving reliability.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1, 2, and 6, a sliding door closer body 1
Is a main body mounting bracket 3 on the closing side of the upper frame 2 in the sliding door mounting frame.
It is fixed by.

In the upper part of the sliding door 4, the width direction of the sliding door 4 (opening and closing direction)
Two door rollers 5 and 5'are rotatably supported at appropriate intervals. The door rollers 5 and 5'are axially supported by mounting plates 7 and 7'fixed to the upper edge of the sliding door 4 with bolts 6, respectively.

A rail 8 is horizontally provided on the upper frame 2 so as to extend in the opening / closing direction of the sliding door 4, and the doors 5 and 5'are engaged with the rail 8 to suspend the sliding door 4 so that the sliding door 4 can be opened and closed.

A sheave 9 that is rotatably supported on the open side of the upper frame 2.
A wire 10 is wound around the end of the wire 10, and one end of a timing belt 12 for transmitting a sliding door driving force, which is meshed with the drum 11 of the sliding door closer body 1, is connected to a connecting metal fitting 13 or the like. And the other end of the wire 10 is connected to one of the mounting plates 7 and 7 '.
The tensioning spring 16 for tensioning and the tensioning force adjusting screw 17 are connected to the mounting bracket 15 fixed to the screw 14 on one side, and the other end of the timing belt 12 is fixed to the other mounting plate 7'by the screw 18. The fact that it is fixed to the mounting bracket 19 is similar to the conventional sliding door closer of this type.

Further, in the sliding door closer main body 1, as described above, the mainspring which stores the closing force in accompaniment with the opening operation of the sliding door 4 is installed in the drum 11, and the drum 11 is driven by the hydraulic mechanism. The door closing speed is controlled by suppressing the rotation of the door.

Further, tooth portions (not shown) are respectively provided on the bottom portion of the groove portion 11a provided around the drum 11 and the inner surface of the timing belt 12 so as to mesh with each other.

In the sliding door closer configured as described above, the timing belt tooth jump prevention device 20 of the present invention is positioned near one side of the outer periphery of the drum 11, and fixes the support member 21 to the body mounting bracket 3 with the screw 22, The timing belt 12 is pressed to the drum 11 side by the support member 21.

The support member 21 is arranged at a position A where the tooth jumping phenomenon of the timing belt 12 occurs when the sliding door 4 is forcibly closed by an external force.

In this embodiment, the position A where the tooth skipping phenomenon occurs is the peripheral portion on the lower right side of the drum 11 in FIG. 1 because the lower side portion 12a of the timing belt 12 is connected to the sliding door 4. .

Here, as the support member 21, as shown in FIGS. 3A and 3B, a pressing roller 21c of the timing belt 12 is rotatably supported by a fixed shaft 21b fixed to a mounting plate 21a. Or the above fixed shaft as shown in FIG.
21b includes a plurality of timing belts 12 having pressing rollers 21c having the same diameter, which are rotatably and concentrically supported. Further, as shown in FIGS.
A part in which a pressing portion 21d of the timing belt 12 having a substantially arcuate shape on the front and having an appropriate length in the front-rear direction is integrally provided is used.

When the pressing portion 21d of the support member 21 shown in FIGS. 5A and 5B is formed by setting the curvature of the inner surface 21e thereof to be substantially the same as the curvature of the outer peripheral surface of the timing belt 12, the inner surface 21e of the pressing portion 21d is formed.
It is convenient that the timing belt 12 can be pressed stably and smoothly as a whole. In addition, the roller 21c
Even in the case of, the timing belt 12 can be pressed smoothly.

Further, the hole for inserting the screw 22 of the mounting plate 21a is a long hole 2
1f, 21f, it is possible to adjust the movement of the support member 21 in the direction of separating from and contacting the drum 11 and the timing belt 12, by which the pressing force of the timing belt 12,
This is a configuration that can cope with the case where the tension of the timing belt 12 and the height of the tooth portion are different.

Furthermore, the body mounting bracket 3 and the supporting member 21
The left and right hand doors are combined so that they can be used regardless of the left or right hand movement of the sliding door 4. That is, the body mounting bracket 3 is
As shown in the figure, it is formed in a substantially U shape in side view,
The upper piece 3a has a screw hole for attaching to the closer body 1.
3b, and the back piece 3c is formed with a screw hole 3d for fixing itself, but the attachment pieces 3e, 3f for attaching the support member 21 are diagonal positions, that is, the drum 11 The right lower end and the left upper end are paired so as to be point-symmetrical with respect to the center of rotation. Therefore, as shown in FIG. 10, when the pulling door 4 is reversed from the pulling door of the above-described embodiment, the supporting member 21 is attached to the upper mounting piece 3f, so that the same as in the above-mentioned embodiment. It is possible to prevent the tooth jump by controlling the lifting of the timing belt 12 at an appropriate position.

In the embodiment of the present invention configured as described above, the tooth jump prevention device 20 for the timing belt 12 has the timing belt 12 and the drum 11 since the timing belt 12 is pressed against the drum 11 side by the support member 21. Are held in mesh. When the door is closed, in addition to the closing force of the sliding door closer body 1, an external force is applied in the closing direction to forcibly close the sliding door so that the rotation of the drum is suppressed. The lower part of 12 is slack and tries to float above the drum 11, but this
Since the support member 21 functions so as to be pressed against 11, the timing belt 12 and the drum 11 are held in mesh with each other, and tooth jump is reliably prevented.

As described above, in the embodiment of the present invention, the timing belt 12 for transmitting the sliding door driving force is constantly pressed to the drum 11 side of the sliding door closer main body 1 by the supporting member 21, so that the timing belt 12 is fixed to the drum 11. When the sliding door 4 is forcibly closed by an external force, the timing belt 122 is displaced from the tooth portion of the drum 11 due to the timing belt 122 being lifted from the tooth portion of the drum 11.
It is possible to prevent the detachment and the tooth skipping phenomenon, and to operate the sliding door closer with safety and reliability.

Further, since the support member 21 is movably attached to the main body mounting bracket 3 of the sliding door closer main body 1, etc.
Even if it is not permissible to adjust the pressing force of the timing belt 12 against 11 to the optimum state, even if the tension of the timing belt 12 or the height of the tooth portion of the drum 11 and the timing belt 12 is different, it is possible to adjust by moving Since it is possible, it has an effect that it can be applied to a wide range of models.

Moreover, the main body mounting bracket 3 and the supporting member 21 are
Since it can be used regardless of whether it is a left-hand or right-hand slide, it can be used as a left-right hand, so it is possible to use dual parts, and workability in the sliding door installation work can be improved.

The present invention is not limited to the above-mentioned embodiment, and as the transmission body, a belt having no teeth, a wire, or the like can be appropriately used in addition to the timing belt.

[Advantages] In summary, since the present invention is configured as described above, the transmission member for transmitting the sliding door driving force is constantly drummed because the pressing member restricts the lifting of the drum. When the sliding door is forcibly closed by an external force, it is held in a suspended state. As a result, the reliable operation of the sliding door closer can be guaranteed, and the reliability can be significantly improved.

In addition, since the mounting bracket of the sliding door closer is provided with the mounting portion of the pressing member that is point-symmetrical with respect to the center of rotation of the drum, it is possible to mount the pressing member on the mounting portion on the opposite side. Since the mounting bracket can be used for both left and right pulling sliding doors, it is possible to reduce the number of parts due to dual use of parts, or it is not necessary to distinguish parts by left and right pulling hands. The workability in mounting work can also be improved.

[Brief description of drawings]

The drawings show an embodiment of a transmission body pressing device in a sliding door closer according to the present invention. FIG. 1 is a front view of a main part of the transmission device pressing device, and FIG. 2 is a plan view of the same. 3A and 3B are a plan view and a front view showing a supporting member in the apparatus, respectively, FIG. 4 is a plan view showing a second embodiment of the supporting member in the apparatus, and FIGS. 5A and 5B are the apparatus respectively. FIG. 7 is a front view showing a third embodiment of a supporting member in FIG. 6, FIG. 6 is a front view showing an example of use of a sliding door closer equipped with the same device, FIG. 7 is a front view of a sliding door closer, and FIG. FIG. 7 is a cross-sectional view taken along the line VIII-VIII, and FIGS. 9A, B, and C are plan views, front views, side views, and FIG. 10 of the main body mounting bracket, respectively. . In the figure, 1 is a sliding door closer body, 3 is a body mounting bracket, 3e,
3f is a mounting piece, 4 is a sliding door, 11 is a drum, 12 is a timing belt, 20 is a tooth jump prevention device, and 21 is a support member.

Claims (1)

(57) [Claims] 1. A sliding door closer using a long transmission body for transmitting a driving force of a sliding door, and a presser for pressing the lifting of the transmission body from the drum in the vicinity of the transmission body suspended on the drum of the sliding door closer body. A device for holding a transmission body in a sliding door closer, in which a member is arranged and a mounting portion of a holding member is provided so as to be point-symmetrical with respect to a drum rotation center as a symmetry point in a mounting bracket of the sliding door closer. .