JP3451400B2 - Tension adjustment device for wrap-around node for power transmission of automatic door - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for adjusting the tension of a winding node for power transmission of an automatic door installed at an entrance of a building or a room inside the building.

[0002]

2. Description of the Related Art Conventionally, a tension adjusting device for a wrapping intermediate node for power transmission of an automatic door of this type has been disclosed in, for example, Japanese Utility Model Laid-Open No. 61-20950. The technology disclosed in the publication is such that one end of a slide base, in which a side plate having a screw hole is erected at one end of a fixed base and slidably arranged with respect to the fixed base, and a sliding pulley is mounted Also, a side stand plate having a through hole is erected, and the side base plate of the fixed base is screwed into the screw hole and the through hole provided in the side stand plate of the slide base is inserted. A bolt is provided, and a compression spring is provided between the spring mounting nut screwed to the tip of the adjusting bolt and the side plate of the slide base, while the slide base is provided with an elongated hole. The fixing screw, which is inserted through, is screwed into the screw hole formed in the fixed base. When adjusting the tension of the power transmission belt, first loosen the fixing screw to leave the compression spring in a free length, and then rotate the adjusting bolt to move the compression spring through the compression spring. To move the slide base with respect to the fixed base. By this movement, tension is applied to the belt wound around the moving pulley mounted on the slide base and the drive pulley driven by the motor, and the adjustment bolt is rotated when the tension and the spring force of the compression spring are balanced. Then, the fixing screw is tightened in this state to fix the slide base to the fixed base, and the adjustment work is completed.

Thus, in such a prior art,
As described above, it is necessary to form side plates and screw holes or through holes on the slide base and fixed base on which the sliding pulley is mounted, and therefore, it is necessary to form bending holes, drilling holes, threading processes, etc. This is a factor that increases the processing cost. Moreover, when adjusting the tension, it is necessary to adjust the tension by rotating the adjustment bolt and fix the slide base to the fixed base by tightening the fixing screw.
There is a problem that the work is troublesome.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above facts, and its main technical problem is to produce a fixed base and a slide base without bending, drilling or threading. It is an object of the present invention to provide a tension adjusting mechanism of a winding medium node for power transmission of an automatic door. Another technical problem is to provide a tension adjusting device for a power transmission wrapping intermediate node of an automatic door, which facilitates the tension adjusting work.

[0005]

In order to achieve the above technical object, according to the first aspect of the present invention, a power transmission wrapping device is fixed at an appropriate position above an opening of a building or the like where an automatic door is installed. A fixed base having a constant cross-section and having a sliding groove extending in the moving direction of the intermediate node, and a sliding protrusion having a through space slidably fitted in the sliding groove of the fixed base and extending in the moving direction. comprises a strip, winding the sliding base of the cross-section constant shape for mounting winding multiplying從動clause mediated clause, sliding-based sliding protrusion arranged the formed through-space through the And an adjustment screw rod having a locking portion that engages with the end surface of the sliding base at one end, and is screwed into the adjustment screw rod, and engages with the end portion of the fixed base to regulate rotation. And a female screw member that rotates, by changing the relative position to the female screw member by rotating the adjusting screw rod, The tension adjusting device for a winding medium node for power transmission of an automatic door, characterized in that the sliding base whose end surface engages with the locking portion of the adjusting screw rod is slid with respect to the fixed base. Will be provided.

Further, according to the second aspect of the present invention, a traverse provided with a sliding groove which is fixed at an appropriate position above an opening of a building or the like in which an automatic door is installed and which extends in the moving direction of the winding medium node for power transmission. Fixed base having a constant surface and the sliding groove of the fixed base
Comprising a sliding protrusion having a through space slidably extending fitting to the movement direction and the slide base of the cross-section constant shape for mounting a從動clause wound around the winding mediated clause, sliding An operating rod that is provided so as to penetrate through the through space formed in the sliding protrusion of the base and has a locking portion at one end that engages with the end surface of the sliding base, and the other end of the operating rod. A compression spring arranged between a spring seat attached to the base and an end of the fixed base;
An automatic adjustment mechanism which is arranged between the fixed base and the sliding base, and which includes a regulating means for permitting movement of the sliding base in the compression spring pressing direction but regulating movement in the opposite direction. There is provided a tension adjusting device for a winding medium node for power transmission of an automatic door.

[0007]

According to the first aspect of the present invention, the female screw for rotating the adjusting screw rod disposed through the through space formed in the sliding protrusion of the sliding base and screwing the adjusting screw rod with the adjusting screw rod. By changing the relative position with respect to the member, the sliding base with which the engaging portion of the adjusting screw rod engages with the end surface is slid with respect to the fixed base. Adjust the tension of the wrapping mediator wrapped around the moving joint.

Further, according to the second aspect of the invention, when the tension of the wrapping mediation node wound around the sliding joint attached to the sliding base is loosened, the pressing force of the compression spring causes the activating rod to intervene. The sliding base is made to slide on the fixed base, and the tension of the wrapping mediator is automatically adjusted. During the movement of the sliding base, the regulating means arranged between the fixed base and the sliding base does not regulate the movement, and the regulating means does not move after the movement of the sliding base. , The movement of the sliding base in the direction opposite to the compression spring pressing direction is restricted.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a tension adjusting device for a winding medium node for power transmission of an automatic door constructed according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a schematic front view of an automatic door equipped with a tension adjusting device for a power transmission wrapping mediator according to the present invention.
FIG. 3 is a front view showing a part of the tension adjusting device for a winding medium node for power transmission according to the present invention, FIG. 3 is a plan view of a main portion of the tension adjusting device, and FIG. 4 is a side view of the tension adjusting device. is there. In the figure, 2 is a door arranged at the entrance of a building or the like, and a door roller support base 8 supporting the door rollers 4 and 6 is attached. The door 2 is arranged so as to be movable in the lateral direction by mounting the door rollers 4 and 6 on a guide rail 10 arranged at the upper part of the doorway. A toothed drive pulley 14 that serves as a driving joint and a toothed traveling pulley 16 that serves as a locomotive joint are provided on both left and right sides of the guide rail 10. A toothed belt 18 serving as a winding medium node is wound around these pulleys.
By connecting the door roller support 8 mounted on the door 2 to the door 2, the door 2 moves together with the toothed belt 18. In addition, a V pulley or a sprocket may be used as the driving joint and the traveling joint, and a V belt or a chain may be used as the winding medium joint. The toothed moving pulley 16 is mounted on the tension adjusting device 20 according to the present invention, and can be moved and adjusted in the left-right direction in FIG. The tension adjusting device 20 includes a fixed base 30 having a bolt insertion hole 322 for fixing the upper part of an opening of a building or the like where an automatic door is installed, and a fixed base 30 slidably disposed on the fixed base 30. The sliding base 40 on which the toothed belt 18 is mounted is provided. The fixed base 30 includes a base 32 and the base 3.
In the moving direction of the toothed belt 18 which is formed in parallel with the two supporting portions 34 and 35, and the toothed belts 18 which are respectively formed at the tips of the two supporting portions 34 and 35 and serve as wrapping mediation nodes. Sliding rails 36, 3 with extended sliding grooves 362, 372
7 and a connecting portion 38 formed in an intermediate portion between the supporting portions 34 and 35 and connecting the supporting portions 34 and 35. The sliding grooves 362 and 372 of the sliding rails 36 and 37 are crossed in this embodiment. The surface is formed into a regular hexagon, and openings 364 and 374 are provided in the upper portion thereof. The fixed base 30 configured in this manner has a constant cross-section and is therefore extremely easily manufactured by cutting a die material obtained by extruding an aluminum material or the like into a predetermined size. it can. The sliding base 40 has two sliding ridges 46, 47 each having a through space 462, 472 extending in the moving direction of the toothed belt 18 serving as a winding medium node.
And a mounting portion 48 which is formed by connecting the two sliding ridges 46 and 47 and has a hole 482 for mounting the toothed sliding pulley 16 in the central portion. The sliding ridges 46, 47 have a cross section of the fixed base 3
Sliding grooves 362 provided on the sliding rails 36 and 37 of 0,
372 is formed in a regular hexagon corresponding to the sliding groove 362.
372 is slidably fitted in each. The sliding base 40 thus configured has a constant cross-section and is therefore extremely easy to manufacture by cutting an extruded aluminum material or the like into a predetermined size. You can In addition, the toothed moving pulley 16
The support shaft 162 is inserted into the hole 482 formed in the mounting portion 48 of the sliding base 40, and is attached to the mounting portion 48 by the nut 17. The sliding base 4
In the through space 472 formed in the sliding protrusion 47 of No. 0, an adjusting screw rod 50 having a locking portion 52 that engages with the end surface of the sliding base 40 is inserted and arranged at one end. A female screw member 60 is screwed onto the adjusting screw rod 50. The female screw member 60 is a slide rail 37 of the fixed base 30.
From a locking portion 62 formed in a regular hexagon corresponding to the sliding groove 372 provided in the sliding groove 372, and a flange portion 64 formed on a side portion of the locking portion 62 and engaging with an end surface of the sliding rail 37. The nut with flange is used, and the locking portion 6
2 is fitted in a sliding groove 372 formed in the sliding rail 37 to restrict rotation, and the flange portion 64 engages with the end surface of the sliding rail 37 to move to the right in the figure. Is regulated.

This embodiment is constructed as described above,
The adjustment work will be described below. To adjust the tension of the toothed belt 18 wound around the toothed driving pulley 14 and the toothed sliding pulley 16, the adjusting screw rod 50 is rotated clockwise. By this rotation, the adjusting screw rod 50 changes its relative positional relationship by being screwed with the female screw member 60, and moves to the left in FIGS. 1 to 3. This adjusting screw rod 5
With the movement of 0 to the left, the sliding base 40 is moved to the left in FIGS. 1 to 3 via the locking portion 52 provided at one end of the adjusting screw rod 50. As a result, the toothed sliding pulley 16 mounted on the sliding base 40 is shown in FIG.
3 to 3, the toothed belt 18 is tensioned because it is moved to the left and the gap between the toothed drive pulley 14 and the toothed drive pulley 14 is increased. The adjustment work is completed by stopping the rotation of the adjusting screw rod 50 when the tension is applied to the toothed belt 18.

Next, another embodiment of the present invention will be described with reference to FIGS. FIG. 5 is a cross-sectional view of a tension adjusting device for a winding medium node for power transmission of an automatic door having an automatic adjusting function, and FIG. 6 is a plan view of a main part of the tension adjusting mechanism. The same reference numerals are given and the description thereof is omitted. Penetration spaces 462, 472 formed in the sliding ridges 46, 47 of the sliding base 40 slidably fitted in the sliding grooves 362, 372 formed in the sliding rails 36, 37 of the fixed base 30. (See FIG. 2), one end has a sliding base 40
The operating rods 70 and 71, which are threaded rods and are provided with locking portions 702 and 712, respectively, which engage with the end surfaces of the rods, are provided so as to pass therethrough. The operating rods 70, 71 are connected by a spring seat 74 formed of a connecting plate positioned by nuts 72, 73, and the operating rods 70, 71 are connected between the spring seat 74 and the end of the fixed base 30. The compression springs 76 and 77, which are respectively fitted and arranged, are arranged. Therefore, the sliding base 40 is pressed by the spring force of the compression springs 76, 77 so as to move leftward in FIGS. 5 and 6 via the spring seat 74, the nuts 72, 73 and the operating rods 70, 71. There is. The spring seat 74 does not have to be a connecting plate, and the nuts 72 and 73 can be omitted by providing the spring seat with a female screw that engages with the operating rods 70 and 71. Meanwhile, the connecting portion 38 of the fixed base 30.
On the upper surface of the engaging plate 80, a bending piece 81 that engages with the end surface of the fixed base 30 and two rows of engaging portions 82 and 83 provided in the sliding direction of the sliding base 40 are provided. Are attached by screws 85. Further, the sliding base 40 is provided with a locking piece 90 whose one end is fastened together by a nut 17 for mounting the toothed sliding pulley 16. The locking piece 90 is made of, for example, spring steel, and has locking pawls 92 and 93 that engage with the engaging portions 82 and 83 formed on the engaging plate 80, and the locking pawl 92 at the other end. And 93 and formed with a tongue 96 having a threaded hole 962. A screw 86 is screwed into a screw hole 962 formed in the tongue piece 96. The screw 86
Is screwed in at the time of shipment or when the belt is changed, and is positioned such that the tip end portion thereof engages with the engaging plate 80 or the end portion of the connecting portion 38, as shown by the chain double-dashed line in FIG. The compression springs 76 and 77 restrict the movement of the sliding base 40 to the left in the figure. Further, when the screw 86 is used after the automatic door is installed, the tip of the screw 86 is the engaging plate 80 or the connecting portion 38.
The sliding base 40 is prevented from hindering the movement by being rotated back to a position where it does not engage with the end of the sliding base 40 or removed.

The present embodiment is configured as described above,
The operation will be described below. The toothed drive pulley 1
When the toothed belt 18 is wound around the toothed belt 4 and the toothed pulley 16, the tension causes the toothed pulley 16 to be pulled to the right in FIGS. 5 and 6. However, the sliding base 40 to which the toothed moving pulley 16 is attached is compressed by the compression springs 76 and 77 via the operating rods 70 and 71, as shown in FIG.
6 is pressed to the left in FIG. 6, the sliding base 40 and the toothed sliding pulley 16 are
Is maintained at a position where the tension of the tooth and the pressing force of the compression springs 76 and 77 are balanced, and the toothed moving pulley 16 is maintained in a constant tension state. At this time, the locking claws 92, 93 of the locking piece 90 mounted on the sliding base 40 are locked by the plurality of locking parts 82, 83 formed on the engaging plate 80 mounted on the connecting part 38 of the fixed base 30. Engage with either. Therefore, the movement of the toothed moving pulley 16 to the right in FIG. 5 and FIG. 6, that is, to the toothed driving pulley 14 side is restricted. Next, when the toothed belt 18 is loosened due to reasons such as long-term use, the tension of the toothed belt 18 decreases, so that the pressing force of the compression springs 76 and 77 causes the sliding base 40 and the toothed pulley 16 to move.
5 is moved to the left in FIGS. 5 and 6, and is moved to a position where the pressing forces of the compression springs 76 and 77 and the tension of the toothed belt 18 are balanced to stop, thereby restoring the tension state of the toothed belt 18. To do. When the sliding base 40 and the toothed sliding pulley 16 are moved, the locking claws 92 and 93 of the locking piece 90 mounted on the sliding base 40 are mounted on the connecting portion 38 of the fixed base 30. 5 and 6 of the toothed moving pulley 16 by sliding on the engaging plate 80 and engaging with the locking portions 82 and 83 corresponding to the positions where the sliding base 40 and the toothed moving pulley 16 are stopped. In the right direction, that is, the movement toward the toothed drive pulley 14 side is restricted. In this way, the tension of the toothed belt 18 is automatically adjusted, and the smooth operation of the automatic door can be ensured.

Although the present invention has been described with reference to the embodiments shown in the accompanying drawings, the present invention is not limited to the embodiments, and various modifications can be made without departing from the scope of the technical idea of the present invention. It is possible. For example, the sliding groove and the sliding ridge provided on the fixed base and the sliding base are shown as using two of the same shape in the embodiment. However, by providing two, the fixed groove and the sliding ridge are provided. Although there is an advantage that the positional relationship with the moving base can be stably maintained and the relative movement between the two can be smoothly performed, it is not necessary that the two have the same shape, and it is not always necessary to use two. Further, in the examples, the sliding groove and the sliding ridge provided on the fixed base and the sliding base are shown to have a regular hexagonal cross-sectional shape. Although there is an advantage that a commercially available nut with a flange can be used for the nut member 60 that engages with the moving groove, any shape may be used.

[0015]

As described above, according to the present invention, the fixed base and the sliding base provided with the sliding rails and the sliding protrusions are formed to have a constant cross section, and therefore, for example, an aluminum material or the like is used. By cutting the extruded mold material into a predetermined size, it is possible to manufacture it very easily. In addition, an adjusting screw rod having an engaging portion that engages with the end surface of the sliding base at one end is arranged through the through space formed in the sliding protrusion of the sliding base, and the end of the fixed base is also provided. Of the adjusting screw rod by screwing a nut member, which is engaged with a portion and restricted in rotation, with the adjusting screw rod, and rotating the adjusting screw rod to change the relative position to the nut member. Since the sliding base in which the stopper and the end surface are engaged with each other is slid with respect to the fixed base, the adjustment work can be performed very easily only by rotating the adjusting screw rod.

[Brief description of drawings]

FIG. 1 is a schematic front view of an automatic door equipped with a tension adjusting device for a power transmission wrapping mediator according to the present invention.

FIG. 2 is a partially cutaway front view of the tension adjusting device for the power transmission wrapping mediator according to the present invention.

FIG. 3 is a plan view of a main part of the tension adjusting device.

FIG. 4 is a side view of the tension adjusting device.

FIG. 5 is a cross-sectional view of a tension adjusting device of a winding medium node for power transmission of an automatic door having an automatic adjustment function.

FIG. 6 is a plan view of a main part of the tension adjusting device.

[Explanation of symbols]

2: Door 4: Door car 6: Door car 8: Door car support 10: Guide rail 12: Motor 14: toothed drive pulley 16: Toothed driving pulley 18: Toothed belt 20: Tension adjusting device 30: Fixed base 32: base 34: Support part 35: Support part 36: Sliding rail 37: Sliding rail 38: Connection part 40: Sliding base 46: Sliding ridge 47: Sliding ridge 48: Mounting part 50: Adjustment screw rod 60: Female thread member 70: Operating rod 71: Operating rod 73: Nut 73: Nut 74: Connection plate 76: Compression spring 77: Compression spring 80: Engagement plate 90: Locking piece 92: Locking claw 93: Locking claw

─────────────────────────────────────────────────── ───Continued from the front page (56) References Showa 58-45126 (JP, U) Showa 55-46403 (JP, U) Showa 63-67188 (JP, U) Showa Flat 6- 20857 (JP, U) Actual public 5-2753 (JP, Y2) Actual public 3-36689 (JP, Y2) (58) Fields investigated (Int.Cl. ⁷ , DB name) E05F 15/00 F16H 7 / 00

Claims (6)

(57) [Claims] 1. A fixed base having a constant cross-sectional shape, which is fixed at an appropriate position above an opening of a building or the like where an automatic door is installed, and which has a sliding groove extending in the moving direction of a power transmission wrapping mediator. A slide having a constant cross-section having a sliding ridge having a through space that slidably fits in the sliding groove of the fixed base and extends in the moving direction, and is equipped with a sliding node around which a winding medium node is wound. and dynamic base, is disposed through-space formed in the sliding protrusion of the sliding base through transmural <br/>, provided with a locking portion that engages with the sliding base end face at one end An adjusting screw rod and a female screw member that is screwed into the adjusting screw rod and is engaged with an end portion of the fixed base to be restricted in rotation, and the adjusting screw rod is rotated to form the female screw. By changing the relative position with respect to the member, the sliding base with which the locking portion of the adjusting screw rod and the end surface engage can be used as the fixed base. A tension adjusting device for a winding medium node for power transmission of an automatic door, characterized in that it slides against one another. 2. A fixed base having a constant cross-section, which is fixed at an appropriate position above an opening of a building or the like where an automatic door is installed, and which has a sliding groove extending in the moving direction of a power transmission wrapping mediation node. A slide having a constant cross-section having a sliding ridge having a through space that slidably fits in the sliding groove of the fixed base and extends in the moving direction, and is equipped with a sliding node around which a winding medium node is wound. and dynamic base, is disposed through-space formed in the sliding protrusion of the sliding base through transmural <br/>, provided with a locking portion that engages with the sliding base end face at one end An operating rod, a compression spring disposed between the end of the fixed base and a spring seat attached to the other end of the operating rod, and disposed between the fixed base and the sliding base. A self-adjustment including a regulating means for permitting movement of the sliding base in the pressing direction of the compression spring but regulating movement in the opposite direction. Structure and the tension adjusting device of the automatic door power transmission winding mediated clause characterized by having a. Wherein the fixed sliding protrusion provided on the sliding Domizo your good <br/> beauty sliding base provided on the base is, or claim 1 and 2 disposed respectively parallel to 2. A tension adjusting device for a winding medium node for power transmission of an automatic door according to 2. 4. The automatic according to claim 1, wherein the fixed base and the sliding groove and the sliding ridge provided on the sliding base are formed in a hexagonal cross section. A tension adjusting device for the winding mediator for power transmission of the door. 5. The female screw member includes a locking portion that fits into the sliding groove provided on the fixed base, and a flange portion that is formed on a side portion of the locking portion and that engages with an end surface of the fixed base. The tension adjusting device for the power transmission winding node of the automatic door according to claim 1, wherein the tension adjusting device is a nut with flange. 6. The regulating means of the automatic adjustment mechanism includes an engaging plate having a plurality of engaging portions provided in the fixed base or the sliding base in the sliding direction thereof, and the sliding base or the fixed plate. 3. The tension adjusting device for a power transmission winding node of an automatic door according to claim 2, wherein the tension adjusting device comprises a locking piece that is attached to the base and has a locking claw that engages with one of the plurality of engaging portions.