JP2009071957A - Grommet mounting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a grommet mounting device that makes it possible to easily mount a grommet regardless of the type or the mounting direction of the grommet. <P>SOLUTION: The grommet mounting device includes: opening arms 28A, 28B, 35A, 35B to which opening claws 30 inserted into a grommet are respectively attached; an opening mechanism that is operated to change the position of each opening arm 28A, 28B, 35A, 35B between closed position in which the opening claws 30 are moved close to each other and open position in which the opening claws 30 are moved away from each other; and a motor 19 for driving the opening mechanism. The body 12 of the device is supported so that it can be freely rotated around the vertical axial center. Large-diameter opening claws 30a are attached to each opening arm 28A, 28B, 35A, 35B provided in the body 12 of the device on one side and small-diameter opening claws 30b are attached on the other side. The operation of moving the opening claws 30a, 30b close to or away from each other can be stopped halfway. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a grommet mounting device suitable for mounting grommets of different sizes on a single wire harness.

  For example, when wiring a wiring harness through a hole in a partition between a cabin and an engine room of an automobile or between a cabin and a trunk room, a rubber boot with a hook called a grommet is attached to the wiring harness in advance, and the grommet is attached to the partition. A method is employed in which the grommet supports the wire harness and seals the gap around the outer periphery of the wire harness.

  Since this type of grommet is attached to a wire harness to which a connector is attached, it is necessary to greatly widen the hole when the wire harness is inserted, and a grommet attaching device for that purpose has been proposed (for example, see Patent Document 1). ).

  According to this grommet mounting device, in a state where a plurality of spread claws are gathered at one place, the grommet is fitted over the spread claws, and then the spread claws are separated from each other. Open position. Here, the grommet is stretched so that the wire harness can be inserted through the inner hole.

  Then, in this state, the wire harness is inserted into the hole of the grommet, and then the respective expanded claws are brought closer to each other in a state where the wire harness is pulled outward from between the pair of expanded claws. At this time, it is necessary to continue pulling so that the electric wire of the wire harness is not sandwiched between the respective expanding claws.

  Thereafter, when each of the expanding claws returned to the gathering posture at the initial position, if the grommet was pulled out from each of the expanded claws together with the wire harness and removed, the wire harness with the grommet attached was obtained.

JP-A-5-342928

  However, in recent wire harnesses, due to the complexity of the wiring structure, etc., there is an increasing need to install a large number of grommets even with a single wire harness. The direction may also be different. For example, as shown in FIG. 8, when the grommet 3 having a large diameter hole or the grommet 4 having a small diameter hole is attached to the wire harness 2 arranged on the assembly drawing board 1 in different directions. The spread claws as disclosed in Patent Document 1 cannot be handled by a single type of device, and it is necessary to remove the wire harness 2 from the assembly drawing board 1 once and mount it with the corresponding grommet mounting device.

  Moreover, the wire harness 2 in recent years has been increasing in size and is heavy, requiring several workers to remove and transport it, which has been a tedious and difficult task.

  In view of the above problems, an object of the present invention is to provide a grommet mounting device that can easily perform grommet mounting work regardless of the type of grommet and the direction of the mounting direction.

  The technical means of the grommet mounting device for solving the above-mentioned problems is that the corresponding three or more expanding arms each mounted with three or more expanding claws inserted through the grommet holes, and each expanding claw In a grommet mounting device comprising an expansion mechanism for changing the posture of each expansion arm between a collective posture in which the members gather together and an expanded posture separated from each other, and a driving means for driving the expansion mechanism The apparatus main body of the apparatus is supported so as to be rotatable around a vertical axis, and each of the expanding arms provided in the apparatus main body is provided with the expanding claw for the large-diameter hole grommet on one side surface side. In addition, the widening claw for the small-diameter hole grommet is mounted on the other side surface, and the approaching / separating operation of the widening claw by the widening mechanism can be controlled to be stopped midway.

  Moreover, it is good also as a structure provided with the support body which supports the said apparatus main body so that movement operation is possible at least within a horizontal surface.

  Further, the expansion mechanism includes a cam body that is rotated forward and backward by the driving means, and a first expansion that is pushed and rotated around the support shaft by the forward rotation of the cam body. An opening arm, a return spring for closing and rotating the first expanding arm around the support shaft by reverse rotation of the cam body, and an opening and closing operation of the first expanding arm. It is good also as a structure provided with the said 2nd said expansion arm operated in an opening rotation operation and a closing rotation operation around a spindle in response to operation.

  According to the grommet mounting device of the present invention, the device main body in the grommet mounting device is supported so as to be rotatable around the longitudinal axis, and each of the expanding arms provided in the device main body has a large-diameter hole on one side. Growing claw for grommets is mounted on each side, and expanding claw for small diameter hole grommets is mounted on the other side, respectively. Because it has a structure and there are different sizes of expansion claws on both sides of the expansion arm, it is possible to install from a grommet with a small inner diameter to a grommet with a large inner diameter, and the amount of expansion by each expansion claw In addition, the swivel claw can be adjusted to the desired orientation by rotating the device body around the vertical axis, so the wire harness can be removed from the assembly drawing board and transported as before. It is not necessary, irrespective of the orientation of the grommet type and mounting direction with respect to the wire harness, there is an advantage that the mounting operation of the grommet can be performed easily.

  In addition, if the apparatus main body is structured to have a support body that can be moved and operated in at least a horizontal plane, the apparatus main body can be easily moved to the vicinity of the grommet mounting position in the wire harness. Installation work becomes easier.

  Furthermore, the expansion mechanism includes a cam body that is rotated forward and backward by a driving means, and a first expansion arm that is pushed by the forward rotation of the cam body and is operated to open and rotate around a support shaft. In response to the reverse rotation of the cam body, the return spring for closing and rotating the first expanding arm around the support shaft, and the opening and closing operations of the first expanding arm in conjunction with the return spring. If the structure is provided with a second expanding arm that is opened and closed around the support shaft, when each expanding claw is expanded, the driving force of the driving means When each of the expanding claws is operated to approach, it is returned by the elastic urging force of the return spring, and when a finger or the like is sandwiched between the expanding claws during the grommet mounting operation, etc. Even so, it is the clamping force resulting from the biasing force of the return spring, and has the advantage of excellent safety.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 3 show schematic views of a grommet mounting device 10 and are configured by a base frame 11a, a support frame 11b, a beam frame 11c and the like. The structure includes a support frame base 11 as a support and an apparatus main body 12 mounted on a support portion 11d provided at the tip of the beam frame 11c.

  An appropriate number of casters 13 are provided on the lower surface side of the base frame 11a in the support frame base 11, and the support frame base 11 can be moved and operated within a horizontal plane. Further, an appropriate number of stoppers 14 including hammer locks for stopping the support frame base 11 at desired positions are provided at appropriate positions of the base frame 11a.

  As shown in FIGS. 4 to 6, the apparatus main body 12 includes a housing body 18 having a pair of support plates 17 arranged in parallel with a predetermined distance from each other, and the outer surface side of one support plate 17. Are equipped with a motor 19 and a speed reducer 20 as driving means.

  A drive shaft 21 extending from the speed reducer 20 is supported on both support plates 17 via bearings, and a timing pulley 22 is fixed to the projecting portion of the other end of the drive shaft 21. In addition, a pair of plate-like cam bodies 23A and 23B having cam surfaces 23a and 23b having desired shapes on the outer periphery are fixed and attached to the drive shaft 21 located between the support plates 17 so as to be integrally rotatable. . At this time, the cam bodies 23A and 23B are fixed around the axis of the drive shaft 21 while being out of phase with each other by a predetermined angle, and the cam surfaces 23a and 23b are arranged in the forward rotation direction of the drive shaft 21. At the time of rotation, it is configured as a surface gradually moving away from the rotation center.

  An encoder 24 is mounted on one support plate 17 between the two support plates 17 located above the drive shaft 21, and the rotary shaft 24 a of the encoder 24 projects from the other surface side of the support plate 17. The timing pulley 25 is also fixed to the protruding end portion of the rotating shaft 24a.

  Then, the timing belt 26 is wound around both the timing pulleys 22 and 25, and the rotation position of the drive shaft 21 is detected by the encoder 24, whereby the rotation position of the drive shaft 21, that is, the rotation of the cam bodies 23A and 23B. The position can be detected and controlled.

  That is, the drive shaft 21 is rotated forward and backward through the speed reducer 20 by forward and reverse drive of the motor 19, the rotational position of the drive shaft 21 is detected by the encoder 24, and the motor 19 is forward and reverse driven and stopped. Thus, the rotational positions of the cam bodies 23A and 23B can be controlled.

  Further, a pair of support shafts 27A and 27B are mounted horizontally below the support plates 17 at positions below the cam bodies 23A and 23B. The first support shafts 27A and 27B are respectively connected to the first support shafts 27A and 27B. Intermediate portions in the longitudinal direction of the expanding arms 28A and 28B are pivotally supported.

  Driven rollers 29A and 29B are mounted on the upper end portions of the first expanding arms 28A and 28B, respectively, on the side surfaces different from each other so as to be able to roll. Moreover, the lower part of each 1st expansion arm 28A, 28B protrudes below from the housing body 18, and the expansion nail | claw 30 is detachably attached to the lower end part, respectively.

  Further, overhang portions 28a and 28b are respectively provided on the outer sides of the intermediate portions of the first expanding arms 28A and 28B, and spring support pins 31a and 31b projecting from the overhang portions 28a and 28b, respectively. Further, return springs 33a and 33b made of coil springs and the like are stretched between the spring support pins 32a and 32b that are located above and project from the support plates 17, respectively.

  The driven rollers 29A and 29B mounted on the upper ends of the first expanding arms 28A and 28B are camped by the corresponding cam bodies 23A and 23B by the elastic biasing force of the return springs 33a and 33b. It is structured to be elastically contacted with the surfaces 23a and 23b. In the initial posture shown in FIG. 4, the expanding claws 30 attached to the lower ends of the first expanding arms 28 </ b> A and 28 </ b> B are gathered to gather together.

  Also, as shown in FIGS. 4 and 6, a pair of support shafts 34A and 34B are mounted between the lower ends of both support plates 17 so as to be spaced apart from each other in the horizontal direction. The bent portions of the second expanding arms 35A and 35B formed in the shape of a square are respectively pivotally supported.

  Similarly to the first expanding arms 28A and 28B, driven rollers 36A and 36B are rotatably mounted on different side surfaces at the upper ends of the second expanding arms 35A and 35B, The driven rollers 36A and 36B are fitted to the interlocking recesses 28c and 28d formed in the overhang portions 28a and 28b of the first spreading arms 28A and 28B so as to be freely rollable. Moreover, the lower part of each 2nd expansion arm 35A, 35B protrudes below the housing body 18, and the expansion nail | claw 30 is detachably attached to the lower end part, respectively.

  When the first expanding arms 28A and 28B are rotated around the support shafts 27A and 27B, the driven rollers 36A and 36B are pushed along with the movement of the interlocking recesses 28c and 28d. In addition, each of the second expanding arms 35A and 35B is configured to be rotated in conjunction with the support shafts 34A and 34B. Further, in the initial posture of the first expanding arms 28A and 28B shown in FIG. 4, the respective expanding claws 30 attached to the lower end portions of the respective second expanding arms 35A and 35B are also connected to the respective first expanding arms. It is set as the attitude | position which mutually approached each expansion nail | claw 30 with which the expansion arms 28A and 28B were mounted | worn, and it is set as the assembly attitude | position which the four expansion nail | claws 30 gathered near each other.

  In this state, when the drive shaft 21 is driven in the normal direction via the speed reducer 20 by the normal rotation drive of the motor 19, the cam bodies 23A and 23B are also driven in the normal direction. The cam surfaces 23a and 23b of the cam bodies 23A and 23B are structured to gradually move away from the center of rotation in accordance with the forward rotation drive, and the cam surfaces 23a and 23B are driven forward by the forward rotation of the cam bodies 23A and 23B. , 23b, the driven rollers 29A, 29B are pushed, and the first expanding arms 28A, 28B are gradually rotated around the support shafts 27A, 27B.

  As the first expanding arms 28A and 28B are opened and rotated, the driven rollers 36A and 36B mounted on the second expanding arms 35A and 35B are pushed by the interlocking recesses 28c and 28d. As a result of this pushing, the second expanding arms 35A, 35B are gradually opened and rotated around the support shafts 34A, 34B. And as FIG. 6 shows, it is set as the structure where the expansion attitude | position which each expansion nail | claw 30 spaced apart is obtained. Here, each cam body 23A, 23B, each driven roller 29A, 29B, each interlocking recess 28c, 28d, each driven roller 36A, 36B, etc. constitute an expansion mechanism.

  Then, the motor 19 is stopped by detection of an appropriately arranged sensor or by detection of the encoder 24 in a state of the maximum spread posture.

  When the motor 19 is driven in reverse in this expanded position, the cam bodies 23A and 23B are driven in reverse. At this time, each first expanding arm 28A, 28B is elastically biased in the closing rotation direction by the return springs 33a, 33b, so that each cam surface 23a, 23B has a cam surface 23a, 23b. The driven rollers 29 </ b> A and 29 </ b> B are pulled back to a state where they are in elastic contact with each other and are closed and rotated. As the first expansion arms 28A and 28B are closed and rotated, the second expansion arms 35A and 35B are also operated to close and rotate. When the cam bodies 23A and 23B are returned to the initial positions, as shown in FIG. 4, the first expansion arms 28A and 28B and the second expansion arms 35A and 35B are also returned to the initial positions. Thus, a structure is obtained in which a collective posture in which the respective expanding claws 30 are gathered together is obtained.

  Further, as shown in FIG. 5, the expansion claws 30 are screwed to the lower ends of the first expansion arms 28 </ b> A and 28 </ b> B and the second expansion arms 35 </ b> A and 35 </ b> B. It is structured to be detachably mounted using it. In this embodiment, the large-diameter large-diameter widening claw 30a suitable for the grommet 4 having a large-diameter hole on one side is mounted, and the grommet 3 having a small-diameter hole on the other side is provided. A suitable small-diameter widening claw 30b for small diameter is mounted.

  As shown by the phantom lines in FIG. 4, cover plates 37 are detachably attached to both side portions and upper portions of both support plates 17 by screw fastening or the like, and on the upper cover plate 37, A cylindrical support shaft 39 is fixed in an upward projecting manner via the mounting bracket 38.

  And this support shaft 39 is set as the structure supported by the support part 11d of the support frame stand 11 from the bottom as a fitting shape in the up-down direction. Further, an upper portion of the support portion 11d is provided with a tightening lever 40 for releasably tightening the support shaft 39 with a screw structure, a cam structure, or the like. The shaft 39 is fixed to the support portion 11d so as not to rotate about the vertical axis. By releasing the tightening by rotating the tightening lever 40, the support shaft 39 is vertically centered with respect to the support portion 11d. It is possible to rotate around 360 degrees or more. Here, the apparatus main body 12 has a structure that is supported on the support frame base 11 so as to be rotatable about the longitudinal axis.

  A control unit 41 for driving and controlling the motor 19 of the grommet mounting device 10 is mounted below the support frame base 11, and the motor 19 is driven and controlled based on a signal detected by the encoder 24. As shown in FIG. It is configured to be adjustable as desired.

  This embodiment is configured as described above. For example, as shown in FIG. 8, a grommet 3 having a large-diameter hole or a small-diameter hole is provided in the wire harness 2 arranged on the assembly drawing board 1. When the grommet 4 having the grommet is mounted in different directions, the assembly drawing board 1 is arranged corresponding to the lower position of the apparatus main body 12 in the grommet mounting apparatus 10.

  In this state, for example, in order to mount the grommet 4 having a large-diameter hole on the upper right in FIG. 9, the support frame base 11 is moved to move the apparatus main body 12 closer to the grommet 4. Next, the large-diameter widening claw 30a corresponding to the type and mounting direction of the grommet 4 is set in a desired direction. At this time, if the orientation of the large-diameter expanding claw 30a is different from the mounting direction, the housing body 18 of the apparatus main body 12 may be rotated around the vertical axis.

  In this state, the corresponding grommet 4 is fitted into each large-diameter widening claw 30a in the collective posture, and in this state, for example, if the forward drive switch of the motor 19 is pushed, the pushing operation is performed. During this time, the motor 19 is driven to rotate forward, and the cam bodies 23A and 23B are rotated forward through the speed reducer 20 and the drive shaft 21. The first expanding arms 28A and 28B and the second expanding arms 35A and 35B are gradually opened and rotated by the forward rotation of the cam bodies 23A and 23B.

  Then, when the amount of expansion of each large-diameter expansion claw 30a reaches a desired value, the rotation of the motor 19 stops if the push operation of the forward rotation drive switch is released. Then, if the end of the corresponding wire harness 2 is lifted and inserted into a desired position in the hole of the grommet 4 stopped in this expanded posture, and then the reverse drive switch is pushed, the push operation is performed. During this time, the motor 19 is driven in reverse and the cam bodies 23A and 23B are rotated in reverse.

  The first expanding arms 28A and 28B and the second expanding arms 35A and 35B are gradually closed and rotated by the reverse rotation of the cam bodies 23A and 23B. Then, in a state where the expansion amount of each large-diameter expansion claw 30a has returned to a desired extraction expansion amount suitable for extracting the grommet 4 from the large-diameter expansion claw 30a, the reverse rotation drive switch temporarily When the pushing operation is released, the rotation of the motor 19 is stopped, and the large-diameter widening claws 30a are pulled out from each other and stopped in a widened posture separated from each other.

  In this state, if the grommet 4 is pulled out from each large diameter expanding claw 30a, each wire constituting the wire harness 2 can be easily pulled out without being sandwiched between the large diameter expanding claws 30a. After the grommet 4 is pulled out, the large-diameter expanding claws 30a are returned to the initial collective posture by pushing the reverse drive switch.

  Next, as shown in FIG. 10, in order to mount the grommet 3 having a small diameter hole at the lower right, the apparatus main body 12 is moved close to the grommet 3 in the same manner as described above. Then, the small-diameter widening claw 30b corresponding to the type and mounting direction of the grommet 3 is set in a desired direction. At this time, if the orientation of the small diameter widening claw 30b is different from the mounting direction, the housing body 18 of the apparatus main body 12 may be rotated around the vertical axis.

  In this state, the corresponding grommet 3 is fitted into each small diameter widening claw 30b in the collective posture, and in this state, the forward drive switch is pushed to drive the motor 19 forward. In the same manner, the first expanding arms 28A and 28B and the second expanding arms 35A and 35B are gradually opened and rotated.

  When the amount of expansion of each small-diameter expansion claw 30b reaches a desired value, the pressing operation of the forward rotation drive switch is released, and the motor 19 is stopped. Then, the end of the corresponding wire harness 2 is lifted and inserted into a desired position in the hole of the grommet 3 stopped in this expanded posture, and then the reverse drive switch is pressed to drive the motor 19 in reverse. In the same manner as described above, the first expanding arms 28A and 28B and the second expanding arms 35A and 35B are gradually turned and closed.

  Then, once the expansion amount of each small-diameter expansion claw 30b has returned to a desired extraction expansion amount suitable for extracting the grommet 3 from the small-diameter expansion claw 30b, the push operation is once performed by the reverse drive switch. Is released, the motor 19 is stopped, and when the grommet 3 is pulled out from each small diameter widening claw 30b in the state of the widening posture, each wire constituting the wire harness 2 is expanded to each small diameter widening claw 30b. It can be easily pulled out without being caught between them. Then, after the grommet 3 is pulled out, the small-diameter expanding claws 30b are returned to the initial collective posture by pushing the reverse drive switch.

  Next, as shown in FIG. 11, in order to mount the grommet 4 having a large-diameter hole at the upper left, the apparatus main body 12 is moved close to the grommet 4 in the same manner as described above. Then, the large-diameter expanding claw 30a corresponding to the type and mounting direction of the grommet 4 is set in a desired direction. At this time, if the orientation of the large-diameter expanding claw 30a is different from the mounting direction, the housing body 18 of the apparatus main body 12 may be rotated around the vertical axis.

  In this state, the corresponding grommet 4 is fitted into each large-diameter widening claw 30a in the collective posture, and in this state, the forward rotation drive switch is pushed and the motor 19 is driven forward. In the same manner as described above, the first expanding arms 28A and 28B and the second expanding arms 35A and 35B are gradually opened and rotated.

  When the expansion amount of each large-diameter expansion claw 30a reaches a desired value, the push operation of the forward rotation drive switch is released and the motor 19 is stopped. Then, the end of the corresponding wire harness 2 is lifted and inserted into a desired position in the hole of the grommet 4 stopped in this expanded posture, and then the reverse drive switch is pushed to drive the motor 19 in reverse. In the same manner as described above, the first expanding arms 28A and 28B and the second expanding arms 35A and 35B are gradually turned and closed.

  Then, in a state where the expansion amount of each large-diameter expansion claw 30a has returned to a desired extraction expansion amount suitable for extracting the grommet 4 from the large-diameter expansion claw 30a, the reverse rotation drive switch temporarily When the push operation is released, the motor 19 is stopped, and the grommet 4 is pulled out from each large-diameter expanding claw 30a in this expanded posture, each wire constituting the wire harness 2 is used for each large-diameter. It can be easily pulled out without being sandwiched between the expanding claws 30a. After the grommet 4 is pulled out, the large-diameter expanding claws 30a are returned to the initial collective posture by pushing the reverse drive switch.

  Next, as shown in FIG. 12, in order to mount the grommet 3 having a small diameter hole at the lower left, the apparatus main body 12 is moved close to the grommet 3 in the same manner as described above. Then, the small-diameter widening claw 30b corresponding to the type and mounting direction of the grommet 3 is set in a desired direction. At this time, if the orientation of the small diameter widening claw 30b is different from the mounting direction, the housing body 18 of the apparatus main body 12 may be rotated around the vertical axis.

  In this state, the corresponding grommet 3 is fitted into each small diameter widening claw 30b in the collective posture, and in this state, the forward drive switch is pushed to drive the motor 19 forward. In the same manner, the first expanding arms 28A and 28B and the second expanding arms 35A and 35B are gradually opened and rotated.

  When the amount of expansion of each small-diameter expansion claw 30b reaches a desired value, the pressing operation of the forward rotation drive switch is released, and the motor 19 is stopped. Then, the end of the corresponding wire harness 2 is lifted and inserted into a desired position in the hole of the grommet 3 stopped in this expanded posture, and then the reverse drive switch is pressed to drive the motor 19 in reverse. In the same manner as described above, the first expanding arms 28A and 28B and the second expanding arms 35A and 35B are gradually turned and closed.

  Then, once the expansion amount of each small-diameter expansion claw 30b has returned to a desired extraction expansion amount suitable for extracting the grommet 3 from the small-diameter expansion claw 30b, the push operation is once performed by the reverse drive switch. Is released, the motor 19 is stopped, and when the grommet 3 is pulled out from each small diameter widening claw 30b in the state of the widening posture, each wire constituting the wire harness 2 is expanded to each small diameter widening claw 30b. It can be easily pulled out without being caught between them. Then, after the grommet 3 is pulled out, the small-diameter expanding claws 30b are returned to the initial collective posture by pushing the reverse drive switch.

  As described above, the grommets 3 and 4 having different sizes can be mounted on the wire harness 2 by the single grommet mounting apparatus 10 regardless of the direction of the mounting direction.

  That is, since the large-diameter widening claw 30a and the small-diameter widening claw 30b of different sizes exist on both surfaces of each of the widening arms 28A, 28B, 35A, 35B, from the grommet 3 having a small inner diameter to the grommet 4 having a large inner diameter. It is possible to install correspondingly, and when the opening and closing operation of each of the expanding arms 28A, 28B, 35A, 35B, the motor 19 can be driven forward / reversely and stopped, so that each large diameter expanding During the approach / separation operation of the claw 30a and each small diameter widening claw 30b, the stop can be controlled midway, and the expansion amount by each large diameter widening claw 30a and each small diameter widening claw 30b can be easily adjusted here. Can be done.

  Further, since the apparatus main body 12 is rotatable around the vertical axis, the direction of each of the expanding claws 30a and 30b can be freely controlled by rotating the apparatus main body 12 around the vertical axis. Can be easily adjusted to the desired orientation.

  Therefore, it is not necessary to remove and carry the wire harness 2 from the assembly drawing board 1 as in the prior art, and the grommets 3 and 4 are not affected by the type of the grommets 3 and 4 with respect to the wire harness 2 and the direction of the mounting direction. Can be easily performed by one grommet mounting apparatus 10.

  In addition, since the support frame base 11 that supports the apparatus main body 12 can be moved and operated by the casters 13, the apparatus main body 12 can be easily moved to the vicinity of the mounting position of the grommets 3 and 4 in the wire harness 2. The grommets 3 and 4 can be attached more easily.

  Further, when the first expanding arms 28A and 28B and the second expanding arms 35A and 35B are closed and rotated, the expanding arms 28A, 28B, 35A and 35B are elastically applied to the return springs 33a and 33b. Since the system is returned by the urging force, even when a finger or the like is accidentally sandwiched between the expanding claws 30a and 30b in the attaching work of the grommets 3 and 4, the return springs 33a and 33b This is the clamping force resulting from the urging force and has the advantage of excellent safety.

  In addition, in the grommet mounting apparatus 10 in the said embodiment, although the expansion nail | claw 30 has shown the structure of 4 each, the structure provided with the 3 or 5 or more expansion | extension nail | claw 30 may be sufficient.

  In addition, although the support frame base 11 that supports the apparatus main body 12 is shown to be movable, the support portion 11d that supports the apparatus main body 12 so as to be rotatable about the vertical axis can be slid in a horizontal plane. A structure that can be freely supported may be employed, and further, a structure that supports the support portion 11d in a three-dimensionally movable manner may be employed.

  Furthermore, although the structure in which the apparatus main body 12 can be manually rotated around the longitudinal axis is shown, a structure in which the apparatus main body 12 is operated to rotate electrically may be used.

  In addition, the structure is shown in which each expansion claw 30 is changed to a collective posture and an expanded posture by using forward / reverse driving of the cam bodies 23A and 23B. The structure which changes the attitude | position of the nail | claw 30 may be sufficient and is not limited to the structure of embodiment at all.

It is a schematic side view of the grommet mounting apparatus which concerns on embodiment of this invention. It is the same front view. It is the same top view. It is principal part sectional drawing. It is the same side view. FIG. It is operation | movement explanatory drawing of an expansion nail | claw. It is explanatory drawing example of the installation of the grommet with respect to a wire harness. It is a grommet mounting operation explanatory diagram. It is a grommet mounting operation explanatory diagram. It is a grommet mounting operation explanatory diagram. It is a grommet mounting operation explanatory diagram.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Assembly drawing board 2 Wire harness 3, 4 Grommet 10 Grommet mounting apparatus 11 Support frame stand 12 Apparatus main body 19 Motor 20 Reduction gear 23A, 23B Cam body 24 Encoder 28A, 28B 1st expansion arm 30 Expansion claw 30a Large diameter Expansion claw 30b Small diameter expansion claw 33a, 33b Return spring 35A, 35B Second expansion arm

Claims (3)

Each of the corresponding three or more spreading arms each fitted with three or more spreading claws inserted through the holes of the grommet, the collective posture in which the respective spreading claws are gathered together, and the spreading posture separated from each other In a grommet mounting device comprising an expansion mechanism for changing the posture of the expansion arm and a driving means for driving the expansion mechanism,
The apparatus main body in the grommet mounting device is supported so as to be rotatable about the longitudinal axis, and each of the expanding arms provided in the apparatus main body has the expanding claw for the large-diameter hole grommet on one side surface. The expansion claw for the small-diameter hole grommets are respectively mounted on the other side surface of the expansion claw, and the approaching / separating operation of the expansion claw by the expansion mechanism can be controlled to be stopped midway. Grommet mounting device. The grommet mounting device according to claim 1,
A grommet mounting device comprising a support body that supports the device main body at least in a horizontal plane so as to be movable. In the grommet mounting device according to claim 1 or 2,
The expansion mechanism includes a cam body that is rotated forward and backward by the driving means, and the first expansion arm that is pushed and rotated around a support shaft by the forward rotation of the cam body. And a return spring for closing and rotating the first expanding arm around the spindle by reverse rotation of the cam body, and opening and closing rotating operations of the first expanding arm. A grommet mounting device comprising: the second expanding arm that is interlocked to open and close and rotate around a support shaft.

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