JP4142622B2 - Rope reciprocating device - Google Patents

Description

  The present invention relates to a reciprocating device for a rope used for reciprocating moving members such as a slide door, a sunroof, a curtain, and a window glass of a vehicle, and particularly to a tensioner for the rope.

  In the opening and closing device for a sliding door of a vehicle, a wire such as a wire is hung around a pair of guide members disposed on the front and rear portions of the side panel of the vehicle body, and both end portions of the wire are connected between the guide members. The winding drum mounted on the side panel of the vehicle body is wound from the opposite direction to each other, and the winding drum is reciprocally rotated by rotating the winding drum forward and backward by a driving means such as a motor. There is one using a reciprocating device of a rope that reciprocates a slide door fixed to an intermediate portion of the rope (for example, see Patent Document 1).

  In such a reciprocating device for the rope, when the winding drum is rotated forward and backward, the end of the rope that is wound is tensioned, the end that is fed out is slackened, and sometimes the slack is slackened. May occur. If such a sag occurs, the sag part may come off from the guiding means and thereafter become inoperable.

In order to prevent such sagging, in the above-described conventional apparatus, the tension roller is pressed against the rope on both sides of the winding drum, and each tension roller is provided with a separate tension coil spring. A tensioner for the rope that is urged in a direction orthogonal to is provided.
JP 11-91355 A

  However, in the conventional tensioner as described above, a pair of tension rollers and a tension coil spring that urges the tension roller are separately mounted on both sides of the winding drum, so the number of parts increases. In addition, there is a problem that the number of assembly work steps increases.

  Further, in the conventional device, when the rope slacks beyond the moving range of the tension roller, the slack part may come off from the guide means and the like, and thereafter it may become inoperable.

  In view of the above-mentioned problems of the prior art, the present invention has a simple structure, can be easily assembled, and in any case, the rope may fall off from the normal route. It is an object of the present invention to provide a reciprocating device for a rope that is not provided.

According to the present invention, the above problem is solved as follows.
(1) A wire wound around a pair of guide members is wound around a winding drum disposed between the two guide members from opposite directions, and the winding drum is rotated in one direction and vice versa. In a reciprocating device for a rope that reciprocally moves the moving member fixed to the rope by reciprocatingly rotating the rope in a direction, the rope extends in opposite directions from the winding drum. A pair of tension rollers that are in pressure contact with each portion of the protruding rope and a roller holder that is axially attached to each tension roller are mounted so as to be movable in a direction substantially perpendicular to the tensioned rope, the tensioner case of providing the urging means the tension roller urges each roller holder in a direction that presses the rope, said winding drum to pivotally the substrate, in close proximity to said winding drum is mounted, wherein The tensioner case is provided with a tensioner body and a tensioner cover that face each other, and a pair of tension rollers and a roller holder are sandwiched between them, and the opposing stripes are almost orthogonal to the ropes in tension. A pair of guide grooves in which the roller holders are slidably fitted in the same direction, and between the lower edges of the tensioner body and the tensioner cover on both sides of the take-up drum. The space is closed by a bottom piece that extends from the lower edge of the tensioner body toward the lower edge of the tensioner cover, and when each roller holder reaches the lower limit position of the guide groove that faces substantially in the vertical direction, The gap between the outer periphery of the collar and the bottom piece is made smaller than the wire diameter of the rope .

(2) In the above item (1) , the end of each bottom piece on the winding drum side is brought close to the outer peripheral surface of the winding drum.

(3) In the above item (1) or (2) , an elliptical rib surrounding the guide groove is provided on the periphery of each guide groove on the inner surface of the tensioner body, and the vertical rib extending from the lower end of the rib to the bottom piece And the gap between the vertical rib and each tension roller is made smaller than the wire diameter of the rope.

(4) In any one of the above items (1) to (3) , a part of the drum cover that covers the take-up drum is brought into contact with the outer surface of the tensioner cover, and the drum cover, the tensioner cover, and the tensioner body are fastened. Tighten together.

(5) In any one of the above items (1) to (4) , a presser member is provided in the tensioner case, which is close to the outer peripheral surface of the take-up drum and presses the feeding start portion of the two ropes.

(6) In any one of the above items (1) to (5) , a winding portion of a torsion coil spring as an urging means is pivotally supported at an intermediate position between both roller holders in the tensioner case, and the torsion coil spring The wire terminal extending portion extending from the winding portion to both sides is brought into contact with both the roller holders from substantially the same direction.

According to the present invention, the following effects can be achieved.
(a) According to the first aspect of the present invention, the tensioner case in which the pair of tension rollers and the biasing means are assembled in advance is attached to the substrate in the vicinity of the take-up drum, so that the pair of tensioners is installed. The roller can be easily mounted at the optimum position with respect to the take-up drum, so that the assembly work can be performed easily and variations in the mounting positions of both tension rollers can be prevented, and tension can be stably applied to the rope. be able to.

(b) Since a pair of tension rollers and a roller holder are held between the tensioner body and the tensioner cover, the tensioner case can be easily assembled to the board. It can be simplified. In addition, a pair of guide grooves are provided in the opposing portion of the tensioner body and the tensioner cover, and each roller holder is slidably fitted to the guide groove so that tension can be applied to the rope more stably. Can do.

(c) Furthermore, even if the cable slacks beyond the moving range of the tension roller, the slack part may fall out from the gap between the outer periphery and bottom piece of the flange at both ends of the tension roller. In addition, it is possible to eliminate the risk of malfunction due to the dropping of the rope.

(d) According to the invention described in claim 2, it is possible to reliably prevent the rope from dropping off from the outer peripheral surface of the winding drum in a state where the tension of the rope is released.

(e) According to the invention described in claim 3 , the tensioner body can be reinforced by the oval rib to stably guide the roller holder, and each tension roller and the tensioner can be provided by providing the vertical rib. It is possible to reliably prevent the cord from entering between the body.

(f) According to the invention described in claim 4 , it is possible to reduce the man-hours for attaching the tensioner case and the drum cover to the substrate.

(g) According to the invention described in claim 5 , when the portion other than the winding portion of the rope is routed, the feeding start portion of the rope in the winding drum can be pressed by the holding member. Workability is improved. Further, at the time of operation, the holding member prevents the rope starting start portion from lifting from the outer periphery of the winding drum, and the rope is effectively prevented from falling off the winding drum.

(h) According to the invention described in claim 6 , since the two tension rollers can be efficiently biased by a single torsion coil spring, not only the number of parts can be reduced, but also the rotational resistance of the winding drum Can be reduced.
That is, when the winding drum is rotated in any direction, one winding side of the rope wound around the winding drum from the opposite direction is tensioned, the other feeding side is slack, and the feeding side is slackened. When the tension roller is pushed by one of the wire end extending portions of the torsion coil spring, the torsion coil spring is unscrewed and the other end of the wire end extending the tension roller on the other winding side is urged. The biasing force is weakened, and as a result, the rotational resistance of the winding drum is reduced.
By reducing the rotational resistance of the take-up drum, the load applied to the take-up drum drive means is reduced, and it is possible to use a small-sized, small output drive means such as a motor for rotating the take-up drum. As a result, the entire reciprocating device for the rope can be reduced in size and weight.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing a left side surface of a vehicle equipped with a sliding door opening and closing device according to an embodiment of the present invention.
The sliding door on the right side surface of the vehicle body is opened and closed by a similar configuration that is symmetrical to the above configuration, but illustration and detailed description thereof are omitted.

  As shown in FIG. 1, the sliding door (4) for opening and closing the opening (3) provided in the middle part of the side panel (2) of the vehicle body (1) is the upper edge of the opening (3) in the side panel (2). The upper rail (not shown) provided at the lower side, the lower rail (not shown) provided at the lower edge, and the front-rear direction provided at the rear middle part of the side panel (2) (the left side in FIG. 1 is the front) Guided by the facing waist rail (5) and opened and closed by the opening / closing device (6), the fully closed position shown in FIG. 1 and moving slightly outward from the outer surface of the side panel (2). It can move between the fully open position (not shown) moved rearward along the side panel (2).

FIG. 2 is a plan view of the opening / closing device (6), and FIG. 3 is a side view of the opening / closing device (6) as viewed from the vehicle interior side. 2 and 3, the right direction is the front side, the upper side in FIG. 2 is the vehicle outer side, and the lower side in FIG. 2 is the vehicle inner side.
As shown in FIG. 1 to FIG. 3, the opening / closing device (6) is a winding that is pivotally supported by a board (7) fixed to the inner surface of the side panel (2) with a shaft (8) facing in the left-right direction. The drum (9) is rotated in the clockwise direction in FIG. 3 and the counterclockwise direction in FIG. A drive unit (12) that is rotated in the closing direction, a pair of guide members (13) and (14) provided on the front and rear of the waist rail (5) in the side panel (2), and a sliding door (4 ) Is fastened to the inner surface of the rim, extends forward from the end, and is wound around the front guide member (13) in a substantially U shape in plan view, and the other end portion is taken up by the winding drum (9). For closing a door made of a wire or cable that is wound counterclockwise from the top of the wire and finally has the other end fixed to the winding drum (9) One end is fixed to the inner surface of the rope (15a) and the sliding door (4), extends rearwardly from there, and is hung around the rear guide member (14) in a substantially U shape in plan view. The other end is wound clockwise from the upper part of the winding drum (9), and the other end is finally fixed to the winding drum (9). It is provided with a rope (15b) for the door.

The ropes (15a) and (15b) are one continuous rope, and the intermediate part is fixed to the sliding door (4) or the terminal part is fixed to the sliding door (4), and the winding drum The number of windings of the rope with respect to (9) may be increased so that the rope does not shift with respect to the winding drum (9).
In this example, the opening / closing device (6) reciprocates the slide door (4), which is a moving member fixed to the rope (15a) (15b) by reciprocatingly moving the rope (15a) (15b). A reciprocating device for a rope according to the present invention is provided.

  Above the winding drum (9) in the substrate (7) of the drive unit (12), the ropes (15a) (15b) are pressed against the tension rollers (16), (17), and the ropes (15a) (15b) ) To prevent the slack of the sag, that is, a tensioner (18).

  Before describing the configuration of the tensioner (18) in detail, the other configuration of the switchgear (6) and the operation of the switchgear (6) as a whole will be briefly described. The guide members (13) and (14) The pulley holders (21) and (22) attached to the side panel (2) through the packings (19) and (20), and the pulley holders (21) and (22) are pivoted with the shafts (23) and (24) pointing vertically. It consists of guide pulleys (25) and (26) that are worn and on which the ropes (15a) and (15b) are wound over almost half a circumference.

  Edges (7a) facing the vehicle inner side are formed on the periphery of the substrate (7) in the drive unit (12), and a plurality of portions of the edge (7a) are formed on the inner surface of the side panel (2). A mounting piece (7b) for screwing is provided. In this example, the side panel (2) has a double wall structure in which a hollow portion is formed between an outer panel (not shown) outside the vehicle and an inner panel (not shown) outside the vehicle. ing.

  Between the upper and lower mounting pieces (7b) and (7b) at the rear end of the board (7), a bracket mounting piece (backward) is provided via a deformable portion (7c) which is slightly inclined rearward and faces the vehicle interior. 7d) is connected. This bracket mounting piece (7d) has mounting pieces (27a) and (27a) formed on the upper and lower portions of the front end of the U-shaped bracket (27) facing in the front-rear direction, and set screws (28) and (28). It is fixed with.

A pulley holder (22) in the rear guide member (14) is pivotally attached to the rear end portion of the bracket (27) with the shaft (24) of the guide pulley (26).
Pulling the pulley holder (22) in the guide member (14) as desired by the outer outlet (22a) of the rope (15b) in the opening (not shown) provided in the outer panel of the side panel (2), and the pulley holder Attach the mounting pieces (27b) (27b) formed on the upper and lower parts of the rear end of the bracket (27) so that (22) is pressed against the inner surface of the outer panel through the packing (20). The rear guide member (14) can be easily and reliably attached to the side panel (2) by abutting against the inner surface of the panel and screwing it.

  At this time, even if there is a slight variation in the positional relationship between the substrate (7) attached to the inner panel (not shown) in the side panel (2) and the opening in the outer panel, the substrate (7) When the deformable portion (7c) is deformed, the bracket mounting piece (7d) and the extending portion (29) formed by the bracket (27) extending rearward from the deformable portion (7c) In any case, the rear guide member (14) can be easily and reliably attached to the regular position on the side panel (2) by slightly tilting in the left-right direction and absorbing the above-described variation.

Next, the operation of the opening / closing device (6) will be described.
In the closed state shown in FIG. 1, when a door opening operation switch provided on the inside or outside of the vehicle (not shown) is operated, the motor (10) is rotated forward and the take-up drum is connected via the speed reduction mechanism (11). (9) is rotated in the opening direction, which is the clockwise direction in FIG. 3, the rear strip (15b) is wound on the winding drum (9), and the front strip (15a) is wound on the winding drum ( 9) The sliding door (4), which is drawn out from 9) and fixed to the two ropes (15a) (15b), is moved rearward.
When the sliding door (4) reaches a predetermined fully opened position, a fully opened detection sensor (not shown and described) is activated, the motor (10) is stopped from rotating forward, and the sliding door (4) is moved to the fully opened position. Retained.

When the sliding door (4) is stopped at a fully open position or an appropriate intermediate position between the fully open position and the fully closed position, a door closing operation switch provided on the inside or outside of the vehicle, not shown, is operated. The motor (10) is reversely rotated, and the take-up drum (9) is rotated counterclockwise in FIG. 3 via the speed reduction mechanism (11) to close the take-up drum (9). By rotating in the direction, the front rope (15a) is wound around the take-up drum (9), and the rear rope (15b) is fed out from the take-up drum (9) to form both ropes (15a). The slide door (4) fixed to (15b) is moved forward.
When the sliding door (4) reaches the fully closed position, it is locked at the fully closed position by a door latch (not shown and described), and the fully closed detection sensor is activated to stop the reverse rotation of the motor (10). The slide door (4) is held in the fully closed position.

Next, the tensioner (18) will be described in detail with reference to FIGS.
FIG. 4 is an exploded perspective view of the tensioner, FIG. 5 is a side view showing the tensioner when the door is opened, and FIG. 6 is a side view showing the tensioner when the door is closed. FIG. 7 to 10 are sectional views taken along lines VII-VII, VIII-VIII, IX-IX, and XX in FIG. 3, respectively.

As clearly shown in FIGS. 3 to 10, particularly FIG. 4, the tensioner (18) is placed close to the substrate (7) on which the take-up drum (9) is pivoted and above the take-up drum (9). A tensioner case (30) is detachably mounted.
The tensioner case (30) includes a tensioner body (31) and a tensioner cover (32) extending in the front-rear direction so as to cover the upper portion of the winding drum (9) and facing each other.

Boss parts (33) (34) (34) facing the tensioner cover (32) side are provided at the center part of the tensioner body (31) and both front and rear sides, and the boss parts (33) (34) (34) ) With the bolt (35) passing through the front and rear bosses (34) (34), the tensioner cover (32), and the substrate (7) with the tip of the The tensioner cover (32), the tensioner body (31), and the substrate (7) are fastened to each other (see FIGS. 3 and 7).
Further, at the tip of the central boss portion (33), there is an attachment piece on the upper portion of the drum cover (36) covering the central portion of the tensioner cover (32) and the winding drum (9), which is in contact with the outer surface thereof. (36a) are fastened together with bolts (37) (see FIGS. 3 and 8).

As shown in FIG. 4, on both sides of the tensioner body (31) and the tensioner cover (32), there are ropes (15a) (15b) in tension extending from the winding drum (9) in both the front and rear directions. Guide grooves (38) and (38) are provided so as to face substantially orthogonal directions.
The guide groove (38) on the tensioner body (31) side faces the inner surface of the tensioner body (31) in a direction substantially perpendicular to the ropes (15a) and (15b) at the time of tension and protrudes toward the inside of the vehicle. By providing an oval rib (39), it is formed inside.
The guide groove (38) on the tensioner cover (32) side is provided with elongated holes on both sides of the tensioner cover (32) that face in a direction substantially perpendicular to the ropes (15a) and (15b) in tension. It is formed by providing an oval rib (39) protruding toward the vehicle inner side at the periphery of the elongated hole.

  A work hole (40) is provided in the upper part inside the guide groove (38) of the tensioner body (31). This working hole (40) is provided with an urging means for each tension roller (16) (17), as will be described later, when the ends of the ropes (15a) (15b) are fixed to the slide door (4). When the urging force of the torsion coil spring (49) is applied, it is difficult to fix the torsion coil spring (49), so each tension roller (16) (17) is held with a jig (not shown) for inserting them. In order to temporarily hold the upper portion of the guide groove (38).

On the lower edges of the front and rear parts of the tensioner body (31), there are ropes (15a) and (15b) extending toward the tensioner cover (32) and extending in both the front and rear directions from the winding drum (9). The bottom pieces (41) and (41) are provided for receiving and supporting in the most sagging state (a state in which a biasing force is applied by the biasing means).
On the inner surface of the tensioner body (31), a vertical rib (42) extending from the lower end of each oval rib (39) to the bottom piece (41) is provided. As shown in FIG. By making the gap between the rollers (16), (17) smaller than the wire diameter of the ropes (15a), (15b), between each tension roller (16), (17) and the tensioner body (31), The cords (15a) and (15b) are surely prevented from entering.

  In the guide grooves (38) (38) of the tensioner body (31) and the tensioner cover (32) facing each other, both side pieces (44) (44) of the roller holder (43) whose front shape is substantially U-shaped downward. The bosses (45) and (45), which are each a pair of upper and lower protrusions, provided on the outer surface of the) are fitted so as to be slidable substantially in the vertical direction.

The upper surface of the connecting piece (46) that connects the upper ends of both side pieces (44) and (44) in each roller holder (43) forms a spring-contacting portion having an angled cross section, and the ridgeline portion has As shown in FIG. 9, a pair of triangular ribs (47), (47) whose upper edge is inclined downward toward the center are provided, and the ridge line portion is a V-groove shape whose center portion is recessed when viewed from the front-rear direction. I am doing.
In each roller holder (43), the tension rollers (16) (17) are rotatable with shafts (48) passing through the lower bosses (45) (45) of the side pieces (44) (44). It is mated.

  4 and 9, the end of each bottom piece (41) on the winding drum (9) side is brought close to the outer peripheral surface of the winding drum (9), and each roller holder (43) is substantially The flanges (16a) (16a) (17a) (17a) at both ends of each tension roller (16) (17) when reaching the lower limit position of the guide grooves (38) (38) facing vertically (see FIG. 4) )) When the gap (d) between the outer circumference and the bottom piece (41) is smaller than the wire diameter of the rope (15a) (15b), even if the rope (15a) (15b) is abnormally loosened, The tension rollers (16) and (17) are prevented from falling off.

  The central boss portion (33) of the tensioner body (31) is formed by winding a wire rod in a torsion coil spring (49) that constitutes a biasing means for simultaneously biasing both tension rollers (16) and (17). The turning portion (49a) is rotatably fitted around. The wire end extending portions (49b) (49c) extending from the winding portion (49a) of the torsion coil spring (49) to both the front and rear sides are connected pieces (46) in the front and rear roller holders (43) (43). ) Are all in contact with the center of the upper surface from above.

As shown in FIG. 10, the bases of both wire material terminal extension portions (49b) and (49c) in the torsion coil spring (49) are located in the same plane perpendicular to the central axis of the winding portion (49a). In this way, the winding portion (49a) is bent so as to gradually approach the center from the outer end portion.
Further, the distance from the central boss portion (33) of the tensioner body (31) to the front and rear guide grooves (38), (38) is made substantially equal, and both wire material terminal extension portions (49b) of the torsion coil spring (49) ) (49c), the length from the winding part (49a) to the contact part to both roller holders (43) is substantially the same.
With such a configuration, the urging force of the torsion coil spring (49) is applied to both tension rollers (16), (17) from both wire end extension portions (49b) (49c) via the roller holder (43). The tension rollers (16) and (17) can be biased downward in a balanced manner.

  As shown in FIG. 3 to FIG. 6 and FIG. 8, just above the winding drum (9) on the inner surface of the tensioner body (31), it is close to the outer peripheral surface of the winding drum (9). A presser member (50) that presses the feeding start portion of 15a) and 15b is integrally formed. The lower surface of the pressing member (50) forms a curved surface that is convex when viewed from the side.

A protrusion (51) protrudes from the front end surface of the presser member (50), and this is fitted into an engagement hole (52) provided in the mounting piece (36a) on the top of the drum cover (36). Thus, the holding member (50) can be stably supported at both ends.
The winding drum (9) and the tensioner case (30) are positioned by fitting the shaft (8) of the winding drum (9) into the hole (7e) provided in the substrate (7) (see FIG. 8). And the projection (53) provided in the tensioner body (31) is fitted into the hole (7f) provided in the substrate (7) (see FIG. 7), and the projection (51) of the presser member (50) is further provided. This is accomplished by fitting into the engagement hole (52) provided in the attachment piece (36a) on the upper part of the drum cover (36), which is a long hole slightly long in the vertical direction.
The presser member (50) may be pivotally supported with a shaft facing in the left-right direction between the tensioner body (31) and the tensioner cover (32) or the drum cover (36).

  Since the tensioner (18) is configured as described above, when the door is opened, the winding cord (15b) is opened by the clockwise rotation of the winding drum (9) as shown in FIG. The tension roller (17) at the rear is lifted against the urging force of the torsion coil spring (49), and on the contrary, the closing rope (15a) fed out from the winding drum (9) is As a result, the front tension roller (16) is pushed down by the urging force of the torsion coil spring (49).

  When the door is closed, as shown in FIG. 6, the winding cord (15a) is tensioned by the counterclockwise rotation of the winding drum (9), and the front tension roller (16) is twisted by the torsion coil. The rope (15b) for opening the door, which is lifted against the urging force of the spring (49) and is unwound from the winding drum (9), is slack, and the rear tension roller (17) is a torsion coil. It is pushed down by the biasing force of the spring (49).

  As can be seen from a comparison between FIG. 5 and FIG. 6, the vertical positions of the front and rear tension rollers (16) and (17) change alternately during the opening and closing operations, but in the torsion coil spring (49). The mutual angle of both wire terminal extension portions (49b) and (49c) hardly changes. Therefore, the urging force of the tension rollers (16) and (17) with respect to the ropes (15a) and (15b) can be kept substantially equal during the opening operation and during the closing operation.

As apparent from the above, according to the present invention, the tensioner case (30) in which the pair of tension rollers (16) (17) and the urging means are assembled in advance is brought close to the winding drum (9). By simply mounting on the substrate (7), the pair of tension rollers (16), (17) can be easily attached to the optimum position with respect to the take-up drum (9), so that the assembly work can be performed easily. At the same time, variations in the mounting positions of the tension rollers (16) and (17) can be prevented, and tension can be stably applied to the ropes (15a) and (15b).
In addition, with the configuration described in each claim, the above-described unique effects can be achieved as the effects of the invention.

  In addition, this invention is not limited only to the said embodiment, Implementation in many modified aspects is possible.

  The present invention not only opens and closes the sliding door of a vehicle, but also winds both ends of the rope around the take-up drum from opposite directions and rotates the take-up drum to reciprocate the rope. Thus, the present invention can be applied to any type of reciprocating device for reeding a moving member fixed to the reed.

It is a perspective view which shows the left side surface of the vehicle equipped with the opening / closing apparatus of the sliding door which is one Embodiment of this invention. Similarly, it is a top view of only the switchgear. Similarly, it is the side view which looked at only the switchgear from the vehicle inside. Similarly, it is an exploded perspective view of a tensioner. Similarly, it is a side view which removes the tensioner cover and shows the state of the tensioner during the opening operation. Similarly, it is a side view which shows the state of the tensioner at the time of closing operation, with the tensioner cover removed. FIG. 4 is a partially enlarged end view taken along line VII-VII in FIG. 3. FIG. 4 is a partially enlarged end view taken along line VIII-VIII in FIG. 3. FIG. 4 is a partially enlarged end view taken along line IX-IX in FIG. 3. FIG. 4 is a partially enlarged end view taken along line XX in FIG. 3.

Explanation of symbols

(1) Body
(2) Side panel
(3) Opening
(4) Sliding door (moving member)
(5) Waist rail
(6) Opening and closing device (reciprocating device of the rope)
(7) Board
(7a) Edge
(7b) Mounting piece
(7c) Deformable part
(7d) Bracket mounting piece
(7e) (7f) hole
(8) Axis
(9) Winding drum
(10) Motor
(11) Deceleration mechanism
(12) Drive unit
(13) (14) Guide member
(15a) (15b)
(16) (17) Tension roller
(16a) (17a) Buttocks
(18) Tensioner
(19) (20) Packing
(21) (22) Pulley holder
(22a) Outer exit
(23) (24) axis
(25) (26) Guide pulley
(27) Bracket
(27a) (27b) Mounting piece
(28) Set screw
(29) Extension part
(30) Tensioner case
(31) Tensioner body
(32) Tensioner cover
(33) (34) Boss
(35) Bolt
(36) Drum cover
(36a) Mounting piece
(37) Bolt
(38) Guide groove
(39) Oval rib
(40) Working hole
(41) Bottom piece
(42) Vertical rib
(43) Roller holder
(44) Side piece
(45) Boss
(46) Connecting piece
(47) Rib
(48) axis
(49) Torsion coil spring (biasing means)
(49a) Winding part
(49b) (49c) Wire terminal extension
(50) Presser member
(51) Protrusion
(52) Engagement hole
(53) Protrusion

Claims (6)

The cords wound around the pair of guide members are wound around the winding drum disposed between the guide members from opposite directions, and the winding drum is rotated in one direction and the opposite direction. In the reciprocating device for the reed moving device, the reciprocating reciprocating movement of the moving member fixed to the reed is caused by reciprocating the reed.
A pair of tension rollers that are in pressure contact with the portions of the rope extending in opposite directions from the winding drum, and a roller holder that is pivotally attached to each tension roller are substantially orthogonal to the rope during tension. A tensioner case provided with urging means for urging each roller holder in a direction in which each tension roller presses against the rope is attached to a substrate pivotally attached to the winding drum. The tensioner case is provided with a tensioner body and a tensioner cover which are opposed to each other, and a pair of tension rollers and a roller holder are sandwiched between them, and the opposing portions are mounted on the tensioner case. There is a pair of guide grooves that face in a direction substantially perpendicular to the ropes in tension and each roller holder is slidably fitted in the same direction. In addition, the space between the lower edges of the tensioner body and the tensioner cover on both sides of the take-up drum is closed by a bottom piece extending from the lower edge of the tensioner body toward the lower edge of the tensioner cover. The gap between the outer periphery of the collar part at the both ends of each tension roller and the bottom piece when reaching the lower limit position of the guide groove that faces substantially in the vertical direction is smaller than the wire diameter of the rope. Reciprocating device. The end of the winding drum side of the bottom piece, the winding drum reciprocating device of rope of claim 1, wherein the brought close to the outer peripheral surface of the. An elliptical rib surrounding the guide groove is provided at the periphery of each guide groove on the inner surface of the tensioner body, and a vertical rib extending from the lower end of the rib to the bottom piece is provided, and a gap between the vertical rib and each tension roller is provided. 3. A reciprocating device for a cord according to claim 1 or 2, wherein the device is smaller than the wire diameter of the cord. The rope according to any one of claims 1 to 3 , wherein a part of the drum cover that covers the winding drum is brought into contact with the outer surface of the tensioner cover, and the drum cover, the tensioner cover, and the tensioner body are fastened together by fastening means. Reciprocating device. The reciprocating device for a rope according to any one of claims 1 to 4 , wherein a presser member is provided in the tensioner case so as to be close to the outer peripheral surface of the take-up drum and hold down the feeding start portion of both ropes. A wire rod terminal extending portion that pivots a winding portion of a torsion coil spring, which is a biasing means, at an intermediate position between both roller holders in the tensioner case, and extends to both sides from the winding portion of the torsion coil spring. The reciprocating device for a rope according to any one of claims 1 to 5 , wherein the two roller holders are in contact with each other in substantially the same direction.

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