JP2008062724A - Cart with stay bar - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cart capable of rotating a stay bar provided to stretch it over both right and left panels of the cart or remove it from them freely up to a position where it does not become an obstacle automatically when not used. <P>SOLUTION: This cart is constituted by fitting a rotary bearing member 12 into a front end support column part 2a of the panel 2 on one side externally and supporting the rotary bearing member 12 on the front end support column part 2a to rotate around the support column part 2a by itself, supporting a basic part 10a of the stay bar 10 on the rotary bearing member 12 to swing vertically and freely, and attaching a locking fitting 11 for engaging a locking part 10b formed at a play end of the stay bar 10 to engage or disengage it freely to a front end support column part 3a of the panel 3 on the other side. The rotary bearing member 12 is provided with an energizing means (gravity acting on an inclined cam part 17 and the rotary bearing member 12) for rotating the rotary bearing member 12 into an evacuation condition in which the stay bar 10 is positioned on a front side of the front end support column part 2a for supporting the rotary bearing member 12 when the stay bar 10 is in a free state in which the locking part 10b is removed from the locking fitting 11. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a transportation carriage provided with a stay bar that is detachably provided between front end support portions of left and right side panels of the transportation carriage.

As a transport carriage with a stay bar, a rotary bearing member is fitted and supported on the front end column portion of one of the left and right side panels so as to be able to rotate around the column portion, and the base portion of the stay bar Is supported on the front end strut portion of the other panel, and is provided with a locking bracket for releasably engaging a locking portion formed at the free end of the stay bar. It has been known. This stay bar is used to connect the left and right side panels to prevent the left and right side panels from swaying during transport work and to prevent the mounted load from falling down. In this type of conventional transport carriage with a stay bar as described in No. 1, the rotary bearing member can be rotated around the front end column portion of the panel. After removing the locking part from the locking metal fitting, the stay bar can be suspended from the front side of the front end column part of the panel by rotating it together with the rotary bearing member forward (forward).
JP 2004-1763 A

  However, in the configuration of the conventional carriage with a stay bar described in Patent Document 1, when the work is performed with the stay bar attached and removed, an operator stands on the front side of the stay bar. Do not rotate the long stapler by as much as 90 degrees toward you, but let the stayer hang down along the front end column of the panel while rotating it slightly forward so that it does not interfere with the locking bracket. The fact is. In this case, the stay bar hangs inside the left and right side panels, which not only interferes with loading and unloading, but in the case of a foldable transport cart, a load support base is placed between the left and right side panels. When it is lifted and folded so as to overlap the back panel, the lower end of the suspended stay bar interferes with the lifted load support base, and the folding work cannot be performed smoothly.

  An object of the present invention is to provide a transport carriage with a stay bar that can solve the conventional problems as described above, and the transport carriage with a stay bar according to claim 1 is an embodiment described later. Is attached to the front end column portion 2a of one of the left and right side panels 2 and 3 so that the rotary bearing member 12 can be rotated around the column portion 2a. At the same time, the base portion 10a of the stay bar 10 is pivotally supported by the rotary bearing member 12 so as to be swingable up and down, and the front end strut portion 3a of the other panel 3 is provided with a locking portion 10b formed at the free end of the stay bar 10. In the transport carriage to which the locking metal fitting 11 to be engaged and disengaged is attached, when the stay bar 10 is in a free state in which the locking portion 10b is removed from the locking metal fitting 11 on the rotary bearing member 12, The rotation axis Biasing means (gravity acting on the inclined cam portion 17 and the rotary bearing member 12) for rotating the member 12 to the retracted state where the stay bar 10 is positioned on the front side of the front end support portion 2a that supports the rotary bearing member 12 is also provided. It has been configured.

  In carrying out the present invention having the above-described configuration, specifically, as described in claim 2, the rotary bearing member 12 is installed between both front and rear support portions of the panel 2 that supports the rotary bearing member 12. A cylindrical main body 13 that is externally fitted to the front end support 2a at a height supported by the cross member 8 so as to be able to move up and down and rotate, and the stay bar 10 is provided continuously from the cylindrical main body 13 laterally. It comprises bearing parts 14a and 14b that are pivotally supported, and the urging means has an inclined cam part 17 formed so as to incline along the circumferential direction in a part of the annular lower side of the cylindrical main body part 13. The inclined cam portion 17 is configured such that the lowest end of the inclined cam portion 17 is the upper side (upper inner edge of the upper surface) of the horizontal member 8 when the stay bar 10 is in the horizontal horizontal posture locked to the locking bracket 11. 8a) and the stay 10 is in the free state When the rotary bearing member 12 descends due to the gravity acting on the rotary bearing member 12, the upper side (upper surface inner edge 8 a) of the cross member 8 passes through the inclined cam portion 17 and the rotary bearing member 12. Can be configured to rotate to the retracted state.

  Further, in this case, as described in claim 3, an annular lower side of the cylindrical main body portion 13 of the rotary bearing member 12 is provided with the cross member 8 when the rotary bearing member 12 rotates to the retracted state. The horizontal step portion 18 placed on the upper side can be formed so as to be connected to the highest end of the inclined cam portion 17.

  According to the carrier cart with a stay bar according to the first aspect of the present invention, the stay bar is moved to the front end of the panel by the urging means simply by removing the free end locking part from the locking bracket and freeing the stay bar. Since it automatically rotates around the support column and switches to the retracted state where the stay bar is located on the front side of the panel front end support unit, the operator removes the stay bar with the free end locking unit removed from the locking bracket. It is only necessary to hang down as it is, and there is no need to manually rotate a long stay bar 90 degrees to the front. In addition, loading and unloading and folding of the load support base in the case of a foldable transport cart are possible. In addition, since the stay bar does not get in the way, workability is greatly improved.

  In addition, according to the structure of Claim 2, as a component of an urging | biasing means, the downward gravity by the weight of the whole rotation member which consists of a rotation bearing member and a stay bar, and the horizontal member which the panel originally has is provided. As an additional configuration, the present invention can be implemented at a low cost by an extremely simple method in which an inclined cam portion is formed on the annular lower side on the rotary bearing member side. In particular, it is practically very effective that the present invention can be implemented only by replacing the rotary bearing member of a conventional general transport carriage with a stay bar.

  In this case, according to the configuration described in claim 3, the stay bar rotated to the front side of the front end column portion of the panel can be reliably and stably supported by the cross member of the panel, and the inclined cam portion and the sliding portion can be supported. It is not necessary to continue applying an excessive force between the upper side of the cross member in contact.

  A specific embodiment of the present invention will be described below with reference to the accompanying drawings. In FIGS. 1 and 2, 1 is a back panel, 2 is a left orientation fixing panel, 3 is a right movable panel, and 4 is a load support base. It is. The orientation fixing panel 2 is a panel fixed to the left side of the back panel 1 at a right angle forward, and the movable panel 3 is folded on the right side of the back panel 1 so as to overlap the right angle front direction and the inside of the back panel 1. The load support base 4 is pivotally supported on the lower side of the back panel 1 so as to be able to move up and down. In the horizontal lying posture, the left and right sides are the lower sides of the left and right side panels 2 and 3. Supported by The wheels 5 a to 5 d below the four corners of the load support base 4 are attached to the lower left and right ends of the back panel 1 and the lower front ends of the left and right panels 2 and 3.

  As is well known in the art, the carrier cart having the above structure is folded so that the load support table 4 stands up along the inner side of the back panel 1 when not being used for transfer work, and the load support table 4 in this standing posture is folded back. The movable panel 3 can be horizontally swung inward so as to be sandwiched between the panel 1 and overlapped with the inner side of the back panel 1 and folded into an L shape in plan view. Also, when transporting, the transport cart is unfolded and assembled in the reverse procedure, but in general, the left and right sides are assembled and supported by the lower sides of the left and right side panels 2 and 3. The load support table 4 in the horizontal lying posture is locked to the left and right side panels 2 and 3 by a lock means, and the load support table 4 can be lifted and conveyed by a forklift.

  Each of the panels 1 to 3 has the same structure, and the lower ends of both end support portions of the portal frame member 6 are connected and integrated by the lower side member 7, and the portal frame member 6 and the lower side member 7 are integrated. A plurality of cross members 8 and a plurality of vertical members 9 are constructed in a lattice shape in a region surrounded by the upper end column 2a of the orientation fixing panel 2 on the uppermost support column 2a. A stay bar 10 is attached at a position directly above the cross member 8, and a locking metal fitting 11 that can freely engage and disengage the free end locking portion of the stay bar 10 is attached to the front end column portion 3 a of the movable panel 3. It has been. Thus, as shown in FIG. 1 and FIG. 2, the stay bar 10 has a free end engaging portion engaged with the engaging fitting 11 so that the front end support portions 2 a and 3 a of the left and right side panels 2 and 3 are horizontally connected. And can be hung along the front end strut portion 2a of the orientation fixing panel 2 as shown by the phantom line in FIG. It is.

  The mounting structure of the stay bar 10 will be described in detail with reference to FIGS. 3 to 6. A rotary bearing member 12 is attached to the front end strut portion 2 a of the orientation fixing panel 2 at a position immediately above the uppermost cross member 8. It has been. The basic structure of the rotary bearing member 12 is the same as that described in Patent Document 1, and the cylindrical body portion 13 and the cylindrical body portion 13 are continuously provided so as to protrude laterally. It consists of a pair of bearing portions 14a and 14b, and opens the pair of bearing portions 14a and 14b to the left and right so that the cylindrical main body portion 13 can be externally fitted to the front end support portion 2a from the side. It is a configuration that can. Further, between the cylindrical main body 13 and the front end support 2a, a shape that can be fitted from the side to the front end support 2a to reduce the rotational resistance of the rotary bearing member 12 with respect to the front end support 6a. A thin-walled sliding cylindrical body 15 formed of synthetic resin is interposed.

  The stay bar 10 is made of a round pipe, and a base portion 10a formed by pressing one end thereof into a flat shape is interposed between a pair of bearing portions 14a and 14b of a rotary bearing member 12 in which the base portion 10a is externally fitted to the front end strut portion 2a. The support shaft (bolt nut) 16 in a direction orthogonal to the front end support column 2a is supported so as to be able to swing up and down, thereby supporting the shaft support of the stay bar 10 to the rotary bearing member 12 and the front end support column 2a. The rotary bearing member 12 is attached. As described above, the rotary bearing member 12 attached to the front end column portion 2a can rotate around the vertical axis of the front end column portion 2a and move up and down in the vertical axis direction. Further, the free end portion of the stay bar 10 is provided with a locking portion 10b formed by pressing in a flat shape like the base portion 10a. The locking portion 10b is provided with respect to the length direction of the stay bar 10. An orthogonal vertical through-hole is provided.

  As described above, the inclined bearing portion 12 and the horizontal step portion 18 are formed on the rotary bearing member 12 attached to the front end support portion 2a. As shown in FIGS. 3, 4A, and B, the inclined cam portion 17 is configured such that the free end locking portion 10b of the stay bar 10 engages with the locking metal fitting 11 on the movable panel 3 side, When in a state of being horizontally stretched, from the upper side of the cross member 8 extending rearward at a right angle from the front end support portion 2a supporting the rotary bearing member 12, that is, from the lowest end in contact with the upper surface inner edge 8a, The stay bar 10 extends spirally upward in the range of approximately 90 degrees along the circumferential direction in the opposite direction to the direction in which the stay bar 10 is rotated forward. Further, the horizontal step portion 18 extends in a direction opposite to the direction in which the stay bar 10 is rotated forward within a range of approximately 90 degrees from the highest end of the inclined cam portion 17.

  The locking metal fitting 11 is basically the same as the conventional one described in Patent Document 1, and includes a cylindrical main body portion 19 that is externally fitted to the front end support portion 3a of the movable panel 3, and the cylindrical shape. A fitting portion 22 formed by overlapping the lower sides of a pair of parallel side wall portions 20 projecting from the main body portion 19 to the side where the orientation fixing panel 2 is located and fastening them with a fastening device 21, and this fitting It is comprised from the standing locking piece 23 cut and raised from the parallel side wall part 20 so that it may stand up from the bottom part of the joint part 22, and was provided. In addition, this locking metal fitting 11 has a notch formed on the annular lower side of the cylindrical main body portion 19 on the cross member 8 extending rearward at a right angle from the front end strut portion 3a that supports the locking metal fitting 11. By fitting, the fitting portion 22 is held in a direction protruding toward the side where the stay bar 10 is located, but can be lifted and rotated as necessary.

  According to the above configuration, when the stay bar 10 is used by horizontally spanning between the left and right side panels 2 and 3, the stay bar 10 is lifted and rotated upward around the support shaft 16 with respect to the rotary bearing member 12. At the same time, the free end locking portion 10b is brought to a position directly above the locking bracket 11 on the movable panel 3 side by rotating horizontally around the front end support portion 2a together with the rotary bearing member 12. In this state, the free end side of the stay bar 10 is lowered and the locking portion 10b is fitted into the fitting portion 22 of the locking fitting 11, and the standing locking piece on the fitting portion 22 side is inserted into the through-locking hole of the locking portion 10b. 23 is inserted. In the use state of the stay bar 10, as described above, the inclined cam portion 17 of the rotary bearing member 12 is formed on the upper inner edge 8a of the cross member 8 whose lowest end extends rearward at a right angle from the front end strut portion 2a. It is in the position to touch.

  When the work cannot be performed because the stay bar 10 is stretched between the left and right side panels 2 and 3, such as when loading and unloading and folding the carriage, the first step is to lift the stay bar 10 slightly upward to lock the lock 10b. Is detached upward from the fitting part 22 of the locking metal fitting 11. Next, if the stay bar 10 is rotated slightly forward (forward) around the front end support 2a together with the rotary bearing member 12, and the locking portion 10b is shifted forward from the position directly above the locking bracket 11, the stay bar The stay bar 10 is turned downward around the support shaft 16 with respect to the rotary bearing member 12 by releasing the hand from the shaft 10. As a result, the stay bar 10 is in a free state together with the rotary bearing member 12, so that gravity caused by the total weight of the stay bar 10 and the rotary bearing member 12 works so as to lower the rotary bearing member 12 along the front end support portion 2 a. At this time, the rotary bearing member 12 is received by the upper inner edge 8a of the cross member 8 in the vicinity of the lowest end of the inclined cam portion 17, so that the rotary bearing member 12 rotates in the direction in which the stay bar 10 rotates forward. The component force acts, and the stay bar 10 rotates in the direction of rotating forward while the rotary bearing member 12 descends along the front end support portion 2a.

  That is, the stay bar 10 that is in a free state and hangs down from the rotary bearing member 12 is inclined from the position shown by the phantom line in FIG. The cam portion 17 automatically rotates forward around the front end strut portion 2a. When the stay bar 10 reaches the front position of the front end support 2a as shown by the solid line in FIG. 4, that is, when the stay bar 10 is in the retracted state, as shown in FIGS. And the horizontal step portion 18 following the highest end of the inclined cam portion 17 is placed on the upper surface of the cross member 8 so that the rotary bearing member 12 is Stabilize. That is, the stay bar 10 is automatically switched to the retracted state in which the stay bar 10 hangs down at the front position of the front end support 2a of the orientation fixing panel 2 and is stabilized.

  Therefore, as shown in FIG. 4C, the stay bar 10 that hangs down along the front end support column 2 a is positioned away from the load support base 4 in the plan view in order to fold the transport carriage. When the load support base 4 is rotated upright, the load support base 4 and the stay bar 10 do not interfere with each other. In addition, the loading / unloading operation on the load supporting table 4 can be easily performed without being disturbed by the stay bar 10.

  In the above embodiment, the urging means for rotating the rotary bearing member 12 to the retracted state where the stay bar 10 is positioned on the front side of the front end support 2a that supports the rotary bearing member 12 is the stay bar 10 and the rotary bearing member 12. Using the gravity acting on the rotary bearing member 12 and adding the inclined cam portion 17 to the annular lower side of the rotary bearing member 12, an urging means using a torsion spring for rotating the rotary bearing member 12, etc. Any other urging means may be used.

It is a perspective view which shows the whole trolley | bogie for conveyance. It is the front view which omitted illustration of the back panel. Fig. A is a cross-sectional plan view showing a stay bar portion in use, and Fig. B is a front view showing the stay bar portion. Fig. A is a rear view of the stay bar shaft support portion, Fig. B is a side view of the same portion, and Fig. C is a transverse plan view of the same portion with the stay bar rotated to the front side of the front end support portion. FIG. 4B is a side view of the stay bar shaft support portion in the state of FIG. 4C. FIG. 4B is a rear view of the stay bar shaft support portion in the state of FIG. 4C.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Back panel 2 Orientation fixed panel 3 Movable panel 4 Load support stand 8 Horizontal member 8a Inner side edge 10 of horizontal member Staber 2a, 3a Front end support | pillar part 11 left-right both-sides panel 11 Locking bracket 12 Rotating bearing member 13 Cylindrical main-body part 14a , 14b Bearing part 15 Sliding cylindrical body 16 Support shaft (bolt nut)
10a Base portion 10b Locking portion 17 Inclined cam portion 18 Horizontal step portion

Claims (3)

  A rotary bearing member is fitted and supported on the front end column of one of the left and right panels so that it can rotate around the column, and the base of the stay bar can be pivoted up and down on the rotary bearing member. In the transport carriage in which the front end strut portion of the other panel is attached with a locking bracket that removably engages the locking portion formed at the free end of the stay bar, the rotating bearing member When the stay bar is in a free state with its locking portion removed from the locking bracket, the rotary bearing member is rotated to a retracted state in which the stay bar is positioned on the front side of the front end support portion that supports the rotary bearing member. A carriage with a stay bar that has an urging means.   The rotary bearing member is a cylindrical main body part that is externally fitted to the front end column part so as to be movable up and down and rotated at a height supported by a cross member laid between the front and rear column parts of the panel that supports the rotary bearing member. And a bearing portion that is provided laterally from the cylindrical main body portion and on which the stay bar is pivotally supported, and the biasing means is circumferentially disposed on a part of the annular lower side of the cylindrical main body portion. An inclined cam portion formed so as to incline along the horizontal member, and when the stay bar is in a horizontal sideways posture where the stay bar is locked to the locking bracket, the lowest end of the inclined cam portion is the horizontal member. The upper side of the cross member is interposed via the inclined cam portion as the rotary bearing member descends due to gravity acting on the rotary bearing member when the stay bar is in the free state. The rotary bearing member is configured to rotate to the retracted state. , Stay bar with conveying carriage according to claim 1.   At the annular lower side of the cylindrical main body portion of the rotary bearing member, a horizontal stepped portion placed on the upper side of the transverse member is connected to the highest end of the inclined cam portion when the rotary bearing member rotates to the retracted state. The carriage with a stay bar of Claim 2 currently formed.

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