JP2009108479A - Trap rod device of gate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a trap rod device of a gate, which facilitates an operation, and which enables a trap rod to be surely held in a position of elevation. <P>SOLUTION: This trap rod device of the gate comprises the trap rods 43 and 69 which are provided in a vertically-movable manner in vertical members 9 and 14, operating bodies 44 and 70 for vertically operating the trap rods 43 and 69, and a holding means 71 for holding the trap rods 43 and 69 in the position of elevation. The holding means 71 is equipped with an engaging pin 48 which constitutes an engaging body, an engaging implement 50 which is swingably pivoted in the direction of engagement/disengagement with respect to the engaging pin 48, and a spring 51 for urging the engaging implement 50 in the direction of engagement. In the engaging implement 50, guide portions 56 and 57 for guiding the engaging implement 50 in the direction of engagement/disengagement with respect to the engaging pin 48 during the vertical motion of the trap rods 43 and 69 are provided on both the upper and lower sides of an engaging portion 52, respectively. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a gate dropping device.

In various types of gates such as telescopic gates, folding gates, and double doors, a dropping rod device has been widely used in order to lock the door body to the ground side in an open state, a closed state, or the like. Conventionally, this dropping rod device is provided with a dropping rod that can be moved up and down in the vertical member of the door body, and a knob is provided on the upper end side of the dropping rod, which corresponds to the amount of vertical movement of the dropping rod on the vertical member. A guide groove and an engaging recess that is recessed in the lateral direction from the upper end of the guide groove and engages the knob at the rising position of the dropping bar are formed in an inverted L shape, and the knob at the tip of the knob is picked The gripping bar is engaged with and disengaged from the engaging recess at the rising position of the dropping bar, and the dropping bar is operated in the vertical direction along the guide groove (Patent Document 1).
JP-A-9-217573

  In the conventional drop rod device, when the drop rod is engaged with and disengaged from the drop hole, in addition to the operation of moving the drop rod up and down, the drop rod is engaged and disengaged with respect to the engaging recess. Operation is required. For this reason, the operation of the dropping rod becomes troublesome and the dropping rod is raised, but there is a concern that the dropping rod falls due to poor engagement of the knob with the engaging recess.

  SUMMARY OF THE INVENTION The present invention has been made in view of such conventional problems, and an object of the present invention is to provide a gate dropping rod device that can be easily operated and can reliably hold the dropping rod in the raised position.

  The present invention includes drop rods 43 and 69 provided in the vertical members 9 and 14 so as to be movable up and down, operating bodies 44 and 70 for operating the drop rods 43 and 69 in the vertical direction, and the drop rods 43 and 69. In the gate drop bar device having a holding means 71 for holding the lift bar in the raised position, the holding means 71 is an engagement body provided on one of the vertical members 9 and 14 side and the drop bars 43 and 69. 48 and an engagement tool 50 that is provided on the other side and engages and disengages with the engagement body 48 by the vertical movement of the dropping rods 43 and 69.

  The holding means 71 includes an engagement pin 48 that constitutes the engagement body, the engagement tool 50 that is pivotably supported in the engagement / disengagement direction with respect to the engagement pin 48, and the engagement tool 50. A spring 51 that biases in the engagement direction. The engagement tool 50 is provided on both upper and lower sides of the engagement portion 52, and when the drop bars 43 and 69 are moved up and down, the engagement tool 50 is moved to the engagement pin 48. On the other hand, you may have the guide parts 56 and 57 which guide in an engagement / disengagement direction.

  The engaging pin 48 is provided on the vertical members 9 and 14 side above the dropping rods 43 and 69 in the raised position, and the lower part of the engaging tool 50 is inserted into the dropping rods 43 and 69 and The spring 51 may be pivotally attached to a support shaft 49 substantially parallel to the engagement pin 48, and the spring 51 may be provided in the drop bars 43 and 69 below the support shaft 49.

  A stopper 53 that holds the engaging tool 50 may be provided in a posture in which the engaging portion 52 can engage with the engaging pin 48 when the dropping bars 43 and 69 are raised. A connecting pin 61 that passes through the guide groove 60 of the vertical members 9 and 14 and connects the drop bars 43 and 69 and the operating bodies 44 and 70 outside the vertical members 9 and 14 may be provided. A holding frame 68 for holding the drop bars 43 and 69 movably up and down is fixed in the vertical members 9 and 14, and the engaging pin 48 is provided on the holding frame 68, and the vertical members 9 and 14 and the holding The connecting pin 61 that passes through the frame 68 and connects the drop bars 43 and 69 to the operating bodies 44 and 70 outside the vertical members 9 and 14 may be provided.

  According to the present invention, there are advantages that the operation can be simplified and the dropping rod can be reliably held in the raised position.

  Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 15 illustrate a first embodiment of the present invention employed in a horizontal pantograph-type telescopic gate.

  As shown in FIGS. 1 (A) to 1 (C), the telescopic gate is composed of a suspension column 3 and a door-to-door column 4 erected on the ground 2 on both the left and right sides of the entrance 1 and the suspension column 3 and the door. A door body 5 is provided between the contact struts 4 so as to be extendable in the left-right direction and opens and closes the entrance 1. A lock receiving frame 7 is fixedly connected to the door support column 4 via a pair of upper and lower connecting members 6.

  The door body 5 includes a pair of upper and lower horizontal pantograph mechanisms 8 configured to be extendable in the left-right direction, a plurality of connecting bars 9, 10 in the left-right direction that connect an intermediate portion between the two pantograph mechanisms 8, and both pantographs. And a connecting frame 11 for connecting the both end portions of the mechanism 8 up and down.

  In addition, the door 5 is connected to the suspension support column 3 via the hinge 12 and the connection member 13 in the vertical direction so that the connection frame 11 on the suspension side is rotatable, and a two-dot chain line in FIGS. Can be expanded and contracted between a contracted state (open state) shown in FIG. 1 and an extended state (closed state) shown by solid lines in FIGS. 1A and 1B, and can be rotated and stored around the hinge 12 in the contracted state. .

  A locking end frame 14 that is locked in contact with the locking receiving frame 7 is fixed to the connecting frame 11 on the door contact side of the door body 5. The locking end frame 14 incorporates a locking device (not shown) having a locking hook corresponding to the locking holder of the locking receiving frame 7 and an end dropping bar device 15 in the vertical direction, and for opening and closing on both the front and rear sides. The handle 16 is provided. An intermediate dropping rod device 17 is provided at a substantially central portion in the left-right direction of the door body 5, and traveling wheels 18 that travel on the ground 2 are provided at a substantially central portion of the door body 5 and a door end side. .

  As shown in FIGS. 2 (A) and 2 (B), the pantograph mechanism 8 includes a plurality of pairs of intermediate link members 19 arranged in an X shape in plan view and a pair of intermediate link members 19 in the left and right directions, and an eight character shape at both ends. And a pair of end link members 20 arranged in the vertical direction, and can be extended and contracted while being bent and stretched in the horizontal direction around the center of the vertical axis via the connecting bars 9 and 10 and the pivot 21. A pair of intermediate link members 19 are connected to each other by a connecting bar 9 at a substantially central intersection, and each pair of intermediate link members 19 adjacent in the left-right direction can be relatively rotated by a connecting bar 10 at the tip. It is connected to.

  The pair of end link members 20 are connected to the front end portion of the corresponding intermediate link member 19 on the inner end side so as to be relatively rotatable by a connecting bar 10, and the cylindrical portion 22 on the outer end side is moved back and forth. The connecting frame 11 arranged in close proximity is connected to the pivots 21 at both upper and lower ends so as to be relatively rotatable.

  The connecting frame 11 connects the pair of pantograph mechanisms 8 in the vertical direction on the end side, and is arranged in the vertical direction between the upper and lower pantograph mechanisms 8, and a pair of front and rear pivots 21 are fixed to both upper and lower ends. . The front and rear pivots 21 are connected by connecting plates 23 on both upper and lower sides of the cylindrical portion 22.

  As shown in FIGS. 3 and 4, the locking end frame 14 has a rectangular cylindrical shape, and is formed in a hollow shape by combining a pair of U-shaped halves 24. The half member 24 has an inner overlap portion 25 and an outer overlap portion 26 on the U-shaped open end side, and the inner overlap portion 25 and the outer overlap portion 26 are superposed on each other to overlap the overlap portions 25, 26. Are screwed together.

  As shown in FIG. 3 and FIG. 4, the connecting frame 11 and the locking end frame 14 abut against the opposing side walls 27 and 28, and a plurality of fastening units 29 in the vertical direction of the connecting frame 11, It is fixed by the engaging means 30 at the lower end. The fastening unit 29 has a position in the vicinity of the upper pantograph mechanism 8 at the upper end portion of the connecting frame 11 and an intermediate position such as a position between the handle 16 and the end drop bar device 15 that is spaced downward by a predetermined distance. The engaging means 30 is provided at a position near the lower pantograph mechanism 8 at the lower end of the connecting frame 11.

  On the side wall 28 of the locking end frame 14, protrusions 31 are provided at substantially the entire length in the vertical direction at both front and rear ends, and the connecting frame 11 is fitted between the protrusions 31. A pair of front and rear projections 32 corresponding to both front and rear sides of the overlapping portions 25 and 26 of the locking end frame 14 between the front and rear pivots 21 and a communication wall connecting the projections 32 are provided on the side wall 27 of the connecting frame 11. 33 is formed to have a substantially entire length in the vertical direction, and a concave groove 34 in the vertical direction is formed on the inner side of the connecting frame 11 corresponding to the connecting wall 33.

  Each fastening unit 29 has a contact plate 35 in the recessed groove 34 and two upper and lower fastening screws 36 that pass through the overlapping portions 25 and 26 and are screwed to the contact plate 35. Is to be concluded. The engagement means 30 has an engagement hole 37 formed in the side wall 28 of the locking end frame 14 and the like, and an engagement piece 38 fixed to the side wall 27 of the connecting frame 11. The upper edge of the hole 37 is engaged. A cap 39 is fitted on both the upper and lower ends of the locking end frame 14 and is fixed by screws 40 inserted through the overlapping portions 25 and 26.

  The intermediate drop bar device 17 is for restricting the forward and backward movement of the intermediate portion when the door body 5 is in the extended state, and as shown in FIGS. 5 to 11, as shown in FIGS. A drop bar 43 inserted into the connecting bar (vertical member) 9 and an operating cylinder (operating body) which is fitted on the outer periphery of the connecting bar 9 so as to move up and down and operates the drop bar 43 in the vertical direction. ) 44 and holding means 45 that detachably holds the drop bar 43 in the raised position (position shown in FIG. 5A). The lower end of the drop bar 43 is engaged with the drop hole 46 on the ground 2 side. It comes to take off.

  The connecting bar 9 is constituted by a cylindrical body having a length straddling the upper and lower pantograph mechanisms 8, and three or more, for example, four ribs 47 are provided on the inner periphery thereof at substantially equal intervals in the vertical direction. It is provided at substantially the entire length. The drop bar 43 and the operation tube 44 are formed of a cylindrical body, and are provided substantially concentrically on the inner and outer periphery of the connecting bar 9.

  The dropping bar 43 is supported and guided by the rib 47 of the connecting bar 9 so as to be slidable in the vertical direction, and a lowering position (position of FIG. 5B) where the lower end engages with the dropping hole 46 and the like of the ground 2 is dropped. It can be moved up and down between the raised position deviated upward from the hole 46 and the like. Note that the lower end of the drop bar 43 protrudes slightly downward from the connecting bar 9 even in the raised position.

  The holding means 45 includes an engagement pin (engagement body) 48 that is fixed to the connecting bar 9 in a substantially diametrical direction in the vicinity of the upper portion of the drop bar 43 in the raised position, and an intermediate portion in the vertical direction within the drop bar 43. An engaging tool 50 pivotally supported in a detachable direction with respect to the engaging pin 48 by a support shaft 49 substantially parallel to the engaging pin 48, and urges the engaging tool 50 in the engaging direction. And a spring 51.

  The engaging tool 50 is vertically long, and its lower half is inserted into the upper part of the drop bar 43, and its vertical center is pivotally supported by the drop bar 43 by a support shaft 49. The engaging tool 50 is provided with an engaging portion 52 at its upper end, a stopper 53 in the middle, and a spring support 54 at its lower end. Note that ring-shaped spacers 55 are fitted over the support shaft 49 on both sides of the engagement tool 50.

  On both the upper and lower sides of the engaging portion 52, guide portions 56 and 57 that are guided by the engaging pin 48 when the drop bar 43 moves up and down and swing the engaging tool 50 in the disengagement direction against the spring 51 are inclined. The engaging part 52 including the guide parts 56 and 57 on both the upper and lower sides is substantially triangular or trapezoidal.

  The stopper 53 contacts the upper end of the drop bar 43 when the engagement part 52 is disengaged from the engagement pin 48, and when the drop bar 43 is lifted, the guide part 56 contacts the engagement pin 48 and the engagement part 52 is This is for holding the engaging tool 50 in a posture capable of engaging with the engaging pin 48. The spring support portion 54 is formed by bending the engagement tool 50 in an L shape, and a spring 51 interposed between the inner periphery of the drop bar 43 and the engagement tool 50 is fitted into the spring support portion 54. ing.

  The operation cylinder 44 is connected to the drop bar 43 through a connection hole 61 that penetrates the through hole 59 of the drop bar 43 and the guide groove 60 of the connection bar 9 in a substantially diametrical direction. It can be operated in the vertical direction.

  The connecting pin 61 is fixed to the operation tube 44 at or near the center in the vertical direction. The operation tube 44 has a length that can cover the guide groove 60 in both the raised position and the lowered position. 61 on both upper and lower sides. The guide groove 60 is formed in the vertical direction over at least the range of the ascending position and the descending position of the drop bar 43.

  It should be noted that the upper and lower ends of the operation cylinder 44 straddle from the end surface to the inner peripheral side so as to prevent damage to the surface of the connecting bar 9 during its vertical movement and to prevent injury during operation. A sliding cylinder 62 made of synthetic resin or the like is fitted.

  The engaging pin 48, the support shaft 49, and the connecting pin 61 are constituted by spring pins or the like, and are connected by rivets 63 to 65 such as blind rivets that are driven from the outside of the operating tube 44 to the connecting bars 9 and 10, the drop bar 43, and both ends. It is fixed. The engaging pin 48, the support shaft 49, and the connecting pin 61 are provided substantially parallel to the front-rear direction. The connecting pin 61 does not need to be substantially parallel to the engaging pin 48 and the support shaft 49.

  The end drop bar device 15 is for restricting the forward and backward movement of the lock end frame 14 when the door body 5 is in an extended state, in a contracted state, or rotated and stored. As shown in FIG. 15, the holding frame 68 fixed to the lower part in the locking end frame 14, the dropping bar 69 slidably inserted in the holding frame 68 in the vertical direction, and the dropping bar 69 are moved up and down. An operation knob (operating body) 70 that operates in the direction and engaging holding means 71 that removably holds the drop bar 69 in the raised position are provided, and the drop bar 69 is inserted into the drop hole 72 or the like on the ground 2 side. I am going to engage and disengage.

  The holding frame 68 has a rectangular cylindrical shape, and recessed portions 73 are formed on the left and right sides of the left and right overlapping portions 25 and 26 of the locking end frame 14, and screws inserted into the overlapping portions 25 and 26 on the upper and lower ends. 74 is fixed to the lock end frame 14.

  The holding frame 68 is provided with a rod guide portion 75 that holds the dropping rod 69 slidably in the vertical direction. The bar guide portion 75 is formed at the substantially central portion of the side wall 76 on both the front and rear sides of the holding frame 68 by a concave portion 77 that is curved outwardly and protrudes inward on the left and right sides of the concave portion 77. And ribs 78. The recess 77 and the rib 78 are provided over substantially the entire length of the holding frame 68 in the vertical direction.

  The drop bar 69 is supported and guided by the rib 78 of the holding frame 68 so as to be slidable in the vertical direction, and a lower position where the lower end engages with the drop hole 72 of the ground 2, and a lift position where the lower end is disengaged upward from the drop hole 72. It can move up and down. The dropping rod 69 is formed of a cylindrical body.

  The holding means 71 has substantially the same configuration as the holding means 45 of the intermediate drop bar device 17, and the same reference numerals are given to the same name portions to simplify the description. That is, the holding means 71 includes an engagement pin (engagement body) 48 that is passed through and fixed to the holding frame 68 in the front-rear direction in the vicinity of the upper portion of the drop bar 69 in the raised position, and an intermediate portion in the vertical direction within the drop bar 69. An engaging tool 50 pivotally supported in a detachable direction with respect to the engaging pin 48 by a support shaft 49 substantially parallel to the engaging pin 48, and urges the engaging tool 50 in the engaging direction. And a spring 51.

  The lower half of the engaging tool 50 is inserted into the upper side of the drop bar 69, and the substantially vertical center is pivotally supported by the drop bar 69 by the support shaft 49. The engaging tool 50 is provided with an engaging portion 52 at the upper end, a stopper 53 in the middle, and a spring support portion 54 at the lower end, and the guide portions 56 and 57 are inclined on both upper and lower sides of the engaging portion 52. It is provided in the shape.

  The operation knob 70 is arranged close to both the front and rear sides of the locking end frame 14, and the through hole 59 of the dropping rod 69, the guide groove 60 of the holding frame 68, and the guide plates 79 on both the front and rear sides of the locking end frame 14 are arranged in the front and rear direction. It is fixed to both front and rear sides of the connecting pin 61 that penetrates and protrudes outward. A long hole 80 in the vertical direction is formed in the guide plate 79 corresponding to the guide groove 60. The guide plate 79 is fixed to the front and rear of the locking end frame 14 with screws 81 or the like. The dropping rod 69 penetrates the lower cap 39 so as to be movable up and down.

  In the telescopic gate having the above-described configuration, when the doorway 1 is closed, the door body 5 is extended and the locking end frame 14 is brought into contact with the locking receiving frame 7 and locked. At this time, in each pantograph mechanism 8, the front ends of the pair of front and rear end link members 20 are connected to the front and rear pivots 21 on the connection frame 11 side, and the locking end frame 14 is fixed to the connection frame 11. The locking end frame 14 can be held at a predetermined angle with respect to the pantograph mechanism 8. Therefore, if the locking end frame 14 is moved along with the locking receiving frame 7, the opposing end surfaces of both can be contacted easily and reliably. Then, the dropping rods 43 and 69 of the intermediate dropping rod device 17 and the end dropping rod device 15 are dropped into the dropping holes 46 and 72 on the ground 2 side to lock the door body 5.

  As illustrated for the end drop bar device 15, each drop bar device 15 and 17 operates as follows. For example, in a state where the drop bar 69 is raised, the drop bar 69 is held in the raised position by the engagement portion 52 of the engagement tool 50 engaging the engagement pin 48 as shown in FIG. .

  When dropping the drop bar 69 into the drop hole 72, the operation knob 70 is held and pushed down along the lock end frame 14. Then, the lower guide part 57 of the engaging part 52 slides with respect to the engaging pin 48, and the engaging tool 50 moves against the spring 51 in the direction of disengagement around the support shaft 49 as shown by the arrow a in FIG. Since it rotates in the direction, the engaging portion 52 is detached from the engaging pin 48 and passes downward. Therefore, it is only necessary to operate the operation knob 70 downward to drop the lower end portion of the drop bar 69 into the drop hole 72 on the ground 2 side.

  The engaging tool 50 detached from the engaging pin 48 is in a state where the stopper 53 is in contact with the upper end of the dropping rod 69. Therefore, when the lock rod 69 is pulled out from the drop hole 72 and the lock is released, the operation knob 70 is gripped and raised along the holding frame 68. Then, since the connecting pin 61 is guided by the guide groove 60, the operation knob 70 and the drop bar 69 are integrally lifted while the engagement tool 50 is maintained in a predetermined posture, and the drop bar 69 comes out of the drop hole 72. .

  When the operation knob 70 is raised to the vicinity of the raised position, the guide portion 56 on the upper side of the engaging portion 52 slides with respect to the engaging pin 48, and the engaging tool 50 resists the spring 51 to support the shaft 49. It rotates in the direction of arrow a. When the engaging portion 52 passes through the engaging pin 48, the engaging tool 50 is returned by the spring 51, and the engaging portion 52 is engaged with the engaging pin 48, thereby raising the drop bar 69 and the operation knob 70. Can be held in position.

  Accordingly, in either case of the intermediate drop bar device 17 or the end drop bar device 15, the holding means 45, by operating the operation cylinder 44 and the operation knob 70 linearly in the vertical direction along the guide groove 60. The engaging pin 48 and the engaging tool 50 can be engaged and disengaged, and the drop bars 43 and 69 can be easily operated by the operation body such as the operation tube 44 and the operation knob 70. Further, as long as the operating body such as the operation tube 44 and the operation knob 70 is raised to the raised position, the engaging tool 50 can be engaged with the engaging pin 48 and the drop bars 43 and 69 can be reliably held at the raised position. There is no fear that the drop bars 43 and 69 fall due to poor engagement at the raised position as in the prior art.

  The holding means 45 and 71 include an engaging pin 48 provided on the connecting bar 9 and the holding frame 68 on the upper side of the dropping rods 43 and 69, and a lower portion inserted into the dropping rods 43 and 69 and substantially the same as the engaging pin 48. An engagement tool 50 pivotally supported by the parallel drop shafts 43 and 69 on the drop pins 43 and 69 so as to be swingable with respect to the engagement pin 48 by a parallel support shaft 49, and the drop rods 43 and 69 below the support shaft 49. And a spring 51 that urges the engagement tool 50 in the engagement direction. The engagement tool 50 is provided on both upper and lower sides of the engagement portion 52 when the drop bars 43 and 69 are moved up and down. Since the guide portions 56 and 57 for guiding 50 in the engaging / disengaging direction with respect to the engaging pin 48 are provided, the dropping rods 43 and 69 can be securely held in the ascending position with a simple structure. , 69 and the holding means 45, 71 can be made compact.

  In particular, in the case of the intermediate drop bar device 17, the drop bar 43 in the connection bar 9 is operated by a cylindrical operation tube 44 fitted over the outer periphery of the connection bar 9. Has a length that covers the guide groove 60 of the connecting bar 9 when it is in either the raised position or the lowered position, so that the appearance of the door body 5 is improved and the design of the door body 5 is further improved. improves. Further, even if something touches the operation tube 44, it is difficult to cause a risk that the operation tube 44 is caught or the operation tube 44 rotates.

  The end dropping bar device 15 is incorporated in the locking end frame 14 which is larger than the connecting bar 9 or the like, but a holding frame 68 having a rectangular cross section is provided in the locking end frame 14, and a dropping bar 69 is provided on the holding frame 68. Since the engaging pin 48 and the like are provided, the dropping rod 69 and the like can be reliably supported in the locking end frame 14, and at the same time, the intermediate dropping rod device provided on the connecting bar 9 which is relatively smaller than the locking end frame 14. It is possible to easily share parts with the 17 side.

  Further, since the dropping frame 69, the engaging pin 48, and the like are provided on the holding frame 68, the work at the time of assembly can be facilitated. Moreover, in each drop bar device 15, 17, the engagement tool 50, the spring 51, etc. are incorporated on the drop bar 43, 69 side and the engagement pin 48 is provided on the connection bar 9 and the holding frame 68. The drop rod devices 15 and 17 can be easily incorporated into the end frame 14.

  16 and 17 illustrate a second embodiment of the present invention. In the intermediate drop bar device 17, the engagement pin 48 is provided at the upper end portion of the drop bar 43, and the support shaft 49, the engagement tool 50, and the spring 51 are provided on the connecting bar 9 side. The engaging tool 50 is upside down, and a notch 82 is provided at the upper end of the drop bar 69 corresponding to the engaging part 52 on the lower end side of the engaging tool 50. In addition, an opening 83 for incorporation is formed in the connecting bar 9 so as to correspond to the engaging tool 50 and the like. The stopper 53 comes into contact with the inner periphery of the connecting bar 9.

  In this way, in the drop bar devices 15 and 17, the engagement pins 48 and the engagement tools 50 constituting the holding means 71 are on the opposite side of either the drop bars 43 and 69 and the connecting bar 9 or the holding frame 68. Each should be provided. Further, even if the connecting bar 9 is provided with the opening 83 for installation, it can be closed by the operation cylinder 44. Therefore, even when the holding means 45 is arranged in the middle portion in the longitudinal direction of the connecting bars 9, 10, it can be easily installed. Can be done.

  18 and 19 illustrate a third embodiment of the present invention. In the end dropping rod device 15, the engaging pin 48 is provided on the holding frame 68, and the engaging tool 50 on the dropping rod 69 side is constituted by a belt-like elastic body such as a leaf spring.

  The engaging tool 50 is provided with an engaging portion 52 and guide portions 56, 57 on the upper end side protruding upward from the dropping rod 69, and the lower side from the middle portion is inserted into the dropping rod 69. An attachment portion 85 for the connecting pin 61 is provided at an intermediate insertion portion of the engaging tool 50, and a U-shaped elastic portion 86 that is elastically fitted into the dropping rod 69 is provided at the lower end side. ing. Therefore, the engaging tool 50 is fixed to the dropping rod 69 by the connecting pin 61 and the resilient portion 86.

  Thus, even when the engaging tool 50 is formed of an elastic body and the lower part thereof is fixed to the dropping rod 69, the operation knob 70 is provided by providing the engaging part 52 and the guide parts 56, 57 on the upper side. The engaging portion 52 can be engaged with and disengaged from the engaging pin 48 by linearly operating in the vertical direction. The engaging pin 48 may be provided on the dropping rod 69 side, and the engaging tool 50 may be provided on the holding frame 68 side.

  As mentioned above, although the Example of this invention was explained in full detail, it is not limited to this Example, A various change is possible in the range which does not deviate from the meaning of this invention. For example, in each of the embodiments, the end dropping rod device 15 and the intermediate dropping rod device 17 of the telescopic gate are illustrated. However, other dropping rod devices other than these can be used in the same manner, and other telescopic types other than the horizontal link type can be used. It can be used not only for gates but also for various types of gate dropping devices other than telescopic gates.

  The cylindrical connecting bar 9 and the rectangular tube-shaped locking end frame 14 are illustrated as the vertical members, and the operation cylinder 44 and the operation knob 70 are illustrated as the operation bodies. A shape that allows the drop bars 43 and 69 to be inserted indirectly up and down is sufficient, and it is sufficient that the operating body has a structure that allows the drop bars 43 and 69 to be operated in the vertical direction from the outside of the vertical member. .

  Although the engagement pin 48 is illustrated as an engagement body of the holding means 45 and 71, the engagement body only needs to be able to engage and disengage the engagement tool 50, and protrusions other than the engagement pin 48 can be used. It may be used, or may be provided integrally by cutting up a part of the holding frame 68 or the like. The engaging tool 50 only needs to include the engaging portion 52, the guide portions 56, 57, and the like. The spring 51 may be a tension spring, a helical spring or the like in addition to the compression spring.

The 1st Example of this invention is shown, (A) is a top view of an expansion-contraction gate, (B) is the front view, (C) is the side view. (A) is an enlarged plan view of the principal part of a door body, (B) is the front view. It is front sectional drawing of the connection part of the connection frame and a locking end frame. It is an expanded plane sectional view of the joint part of the connection frame and the lock end frame. (A) is a partially broken front view of the intermediate dropping rod device in the raised state, and (B) is a partially broken front view in the lowered state. It is an expanded front sectional view of the holding means. It is an expanded side sectional view of the holding means. It is the bb sectional view taken on the line of FIG. It is the cc sectional view taken on the line of FIG. FIG. 7 is a sectional view taken along line dd in FIG. 6. It is the ee sectional view taken on the line of FIG. It is front sectional drawing of the same end part dropping stick apparatus. It is front sectional drawing of the holding means. It is side surface sectional drawing of the holding means. It is the ff line expanded sectional view of FIG. It is front sectional drawing of the holding means which shows the 2nd Example of this invention. It is a plane sectional view of the holding means. It is front sectional drawing of the edge part dropping stick apparatus which shows the 3rd Example of this invention. It is a side plane sectional view of the end drop bar device.

Explanation of symbols

9 Connecting bars (vertical members)
14 Locking end frame (vertical member)
43, 69 Dropping rod 44 Operation cylinder (operation body)
48 Engagement pin (engagement body)
49 Support shaft 50 Engagement tool 51 Spring 52 Engagement part 53 Stopper 56, 57 Guide part 61 Connection pin 68 Holding frame 70 Operation knob (operation body)
71 Holding means

Claims (6)

  A drop rod (43, 69) provided in the vertical member (9, 14) so as to be movable up and down, an operating body (44, 70) for operating the drop rod (43, 69) in the vertical direction, and the drop In the gate dropping rod device having holding means (71) for holding the bars (43, 69) in the raised position, the holding means (71) is connected to the vertical members (9, 14) side and the dropping bars (43 , 69) and an engagement body (48) provided on one side of the engagement body (48), and an engagement body (48) provided on the other side and detachably engaged with the engagement body (48) by the vertical movement of the drop bar (43, 69). A gate dropping rod device comprising an engaging tool (50).   The holding means (71) includes an engagement pin (48) constituting the engagement body, and the engagement tool (50) pivotably supported in an engagement / disengagement direction with respect to the engagement pin (48). And a spring (51) for urging the engaging tool (50) in the engaging direction, and the engaging tool (50) is provided on the upper and lower sides of the engaging portion (52) on the drop bar (43, 43). 69) It has a guide part (56, 57) which guides this engaging tool (50) with respect to the said engaging pin (48) at the time of an up-and-down movement of 69). A gate sticking device.   The engaging pin (48) is provided on the vertical member (9, 14) side above the dropping bar (43, 69) in the raised position, and the lower part of the engaging tool (50) is placed on the dropping bar ( 43, 69) and pivotally attached by a support shaft (49) substantially parallel to the engagement pin (48), and in the drop bar (43, 69) below the support shaft (49). The gate dropping device according to claim 2, wherein the spring (51) is provided on the gate.   A stopper (53) for holding the engaging tool (50) in a posture in which the engaging portion (52) can engage with the engaging pin (48) when the dropping rod (43, 69) is raised. The gate dropping device according to claim 2 or 3, characterized in that it is provided.   The drop rod (43, 69) and the operating body (44, 70) outside the vertical member (9, 14) are connected through the guide groove (60) of the vertical member (9, 14). The gate dropping rod device according to any one of claims 2 to 4, wherein a connecting pin (61) is provided.   A holding frame (68) for holding the drop bar (43, 69) in a vertically movable manner is fixed in the vertical member (9, 14), and the engaging pin (48) is provided on the holding frame (68). The drop bars (43, 69) and the operating body (44, 70) outside the vertical members (9, 14) passing through the vertical members (9, 14) and the holding frame (68). The gate dropping rod device according to any one of claims 2 to 5, wherein the connecting pin (61) to be connected is provided.

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