JP2013018348A - On-vehicle crane - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle roof-top housing type on-vehicle crane capable of not only loading and unloading a wheelchair from a comparatively free position of the inside/outside of a vehicle, but enabling even a physically handicapped person to get on/off.SOLUTION: The on-vehicle crane is constituted of: a horizontal arm 3 provided so that a belt 2 the tip of which can be connected to a suspension object can be unwound and wound from/to the front end; a support 4 in which the rear end of the horizontal arm 3 is orthogonally arranged in the lower end; a holder 5 supporting the support 4 to be freely rotatable; and an attitude control means 6 provided to support the support 4 on the roof R of the vehicle C via the holder 5 in a horizontally laid state in which the axial line coincides with the vehicle width direction L, to freely move back and forth in the vehicle width direction L, and to support the support 4 in a suspended state via the holder 5 oppositely to the vehicle get on/off port P at the terminal point of the first half way.

Description

  The present invention relates to an on-board crane for getting on and off a disabled person and loading and unloading a wheelchair.

  In Patent Document 1, a column is erected on the floor near the door in the vehicle, and an arm that can be rotated around the column is extended from the upper end of the column, and can be extended and wound up from the tip of the arm. A device for loading and unloading a wheelchair for a vehicle in which a belt is suspended is disclosed. However, this device has a drawback that the space in the vehicle is reduced due to the configuration in which the wheelchair is loaded in the vehicle.

Patent Document 2 discloses a wheelchair storage device mounted on the roof of a vehicle.
This device arranges a rail mechanism consisting of three sets of folding rails that can be slid and rotated in the vehicle body width direction on a base provided on the roof of the vehicle, and deploys the rail mechanism along the door from the vehicle roof. The wheelchair is locked to the locking mechanism attached to the state-of-the-art third rail, the rail mechanism is returned to the folded state from this state, and the wheelchair is stored on the roof.

JP 2000-43634 A Japanese Patent Publication No. 1-334176

Since the wheelchair storage device disclosed in Patent Document 2 loads and unloads a wheelchair on a roof, unlike the one in Patent Document 1, the interior space is not narrowed and the interior of the vehicle can be used effectively.
However, this device is inconvenient to deploy the rail folded on the roof and fix the wheelchair on it, and it is inconvenient to place the wheelchair in a fixed position. For this reason, it cannot be used for disabled people, and wheelchair users have to be transferred from the wheelchair to the vehicle by themselves or by being held by a caregiver.

  In view of the above, an object of the present invention is to provide a vehicle roof retractable on-board crane that can not only load and unload a wheelchair from a relatively free position inside and outside the vehicle but also allow a disabled person to get on and off.

In view of the above problems, the in-vehicle crane of the present invention has a horizontal arm that is provided so that a belt whose front end can be connected to a suspended object can be fed and wound from the front end, and the rear end of the horizontal arm is arranged orthogonally to the lower end. A support, a holder for rotatably supporting the support, and a support on the roof of the vehicle in a horizontal lying down state in which the axis of the support coincides with the width of the vehicle through the holder and reciprocating in the width of the vehicle And a posture control means for supporting the column in a suspended state via a holder at the end of the forward path facing the vehicle entrance / exit.
The posture control means is provided on the vehicle roof so as to be reciprocally movable horizontally in the vehicle width direction, and the rear end of the holder is pivotably mounted in the vehicle width direction so that a column that rotates together with the holder is inserted and removed. A linear guide with a possible notch recessed on the front end side of the bottom plate, a trochanter provided on the rear side of the side wall of the holder, and a track on which the trochanter rolls, from the forward path start point to a position near the forward path end point Maintains the horizontal height parallel to the vehicle roof so that the holder stands upright on the linear guide.The section from the position near the forward end point to the position just before the forward end point moves the holder from the upright state to the linear guide. In order to rotate in a horizontal state parallel to this, it tilts downward toward the position immediately before the end of the forward path, and the section from the position immediately before the end of the forward path to the end of the forward path has an inclined lower end so as to maintain the horizontal state of the holder. Maintain the same horizontal height The front plate is arranged at the lower part of the front end of the rail cam and the front end of the holder along the width direction of the linear guide bottom plate. The front plate is extended to both sides of the front plate and the trochanter is in line contact with the front end. A holder rotation restricting body in which a side plate provided with possible outward projecting pieces is slidably mounted on the side wall of the holder and urged by a spring so that the front plate is separated from the front end of the holder forward by a predetermined interval. And an outwardly projecting piece when the trochanter is positioned immediately before the end of the track on the forward path, and a stop plate that is brought into contact with and latched immediately in front of the end of the path of the track.
The trochanter that has reached the forward end point of the track is characterized in that an outward projecting piece of the holder rotation restricting body that is in contact with and latched by the stopper plate is sandwiched.
Further, the belt is characterized in that it is inserted into the horizontal arm and the inside of the column and attached to a winch installed at the upper end of the belt so as to be rotatable together with the column.

In short, the present invention includes a horizontal arm that is provided such that a belt whose front end can be connected to a suspended object such as a wheelchair or a handicapped person can be extended and wound from the front end, and a support column in which the rear end of the horizontal arm is arranged orthogonally to the lower end. , A holder that rotatably supports the column, and a column on the roof of the vehicle that supports the column in a horizontal lying state in which the axis of the column coincides with the vehicle width direction, and is provided so as to be able to reciprocate in the vehicle width direction. At the end of the forward path, it is composed of posture control means that supports the column in a suspended state via a holder facing the vehicle entrance / exit, so that the set of devices can be installed on the roof of the vehicle, so that such a device can be installed in the vehicle including the trunk room. There is no need to consider the installation space, and the space in the vehicle can be used effectively without narrowing the space.
Also, during use, the horizontal arm that extends at a right angle from the lower end of the column can be freely moved around the column by supporting the column in a suspended state by the attitude control means at the end point of the forward path facing the vehicle entrance and exit. Since it is rotated, it is possible not only to load and unload the wheelchair from a relatively free position inside and outside the vehicle, but also to get on and off the disabled.

The attitude control means forms a support in a horizontally lying state by pivotally attaching the rear end of the holder to a linear guide that can be reciprocated horizontally in the vehicle width direction on the vehicle roof. Since the holder can be supported in the upright state and the horizontal state of the holder, which is the suspended state of the support, and the notch that can be inserted and removed from the front end side of the linear guide with the holder is recessed, the horizontal holder When the column is placed in front of the bottom plate of the linear guide, since the column penetrates the notch up and down, the suspended state of the column can be supported without hindrance.
In addition, the trajectory on which the trochanter provided on the rear part of the side wall of the holder rolls is parallel to the roof of the vehicle so that the upright position of the holder is held on the linear guide in the section from the forward path start point to the position near the forward path end point. The horizontal height is maintained, and the section from the position near the end of the forward path to the position immediately before the end of the forward path is directed to the position immediately before the end of the forward path so as to rotate the holder from the upright state to the parallel horizontal state on the linear guide. Since the rail cam that maintains the same horizontal height as the lower end of the slope is provided in the section from the position immediately before the end of the forward path to the end of the forward path to maintain the horizontal state of the holder so that the linear guide moves forward, As the trochanter moves on the track following the undulations, the orientation of the holder (angle with respect to the linear guide) is changed (turned) from an upright position to a horizontal position near the end of the forward path. This makes it possible to change the posture of a vertically lying support column on the roof to a suspended state at a position facing the vehicle entrance and exit, so that the holder (including the support column and horizontal arm) can be moved to the desired position in conjunction with the reciprocation of the linear guide. This series of operations is possible only with a power source for the reciprocating motion of the linear guide.
In addition, the front plate is arranged along the width direction of the lower part of the front end of the holder with the intervention interval of the linear guide bottom plate, extending rearward on both sides of the front plate, and an outer surface where the trochanter can come into line contact with the front end. A side plate with facing protrusions is slidably mounted on the side wall of the holder, and a holder rotation restricting body is provided by urging the front plate forward from the front end of the holder with a predetermined interval by a spring. When the trochanter is positioned immediately before the end of the track's forward path and the support column penetrates downward into the notch of the linear guide and the holder is horizontally mounted on the linear guide, the outward projecting piece of the holder rotation restricting body Since the holder rotation restricting body is restrained from moving in the forward travel direction, the holder is in a horizontal state. Together with the linear guide placed on It can move against the urging force of the spring to the end point, so that the front end of the holder is placed on the front plate of the holder rotation restricting body via the front end of the linear guide bottom plate, and the crane can be used. In the possible state, since the front plate of the holder rotation restricting body connected and integrated with the holder and the side plate is hooked on the lower part of the front end of the linear guide bottom plate on which the holder is horizontally mounted, the vertical rotation of the holder is prevented.
Therefore, when the horizontal object is moved into and out of the vehicle by the rotation of the horizontal arm connected to the suspension object via the belt, especially when the horizontal arm is rotated into the vehicle, the holder is moved to the rear end by the weight of the suspended object. However, as described above, the holder is prevented from rotating up and down, so that a stable suspended state can be maintained at all times and it is safe.

  In addition, the trochanter that has reached the end of the forward path of the track is held by the stopper plate and the outwardly protruding piece of the holder rotation restricting body held by the stopper plate. The forward movement restraint can be held more firmly, the hooking state of the front plate with respect to the lower end of the front end of the linear guide bottom plate on which the holder is horizontally mounted can be held more firmly, and a more stable suspended state can be held.

Since the belt is inserted through the horizontal arm and the inside of the column, the middle part of the belt is not caught by obstacles, and the belt is attached to the winch installed at the upper end of the belt so that it can rotate with the column. And since the horizontal arm rotates together, the belt is not twisted and can always be taken up or delivered in an orderly manner.
Also, by providing a relatively heavy winch at the upper end of the column, the power required to move the holder (including the column and the horizontal arm) can be reduced compared to the case where a winch is provided on the horizontal arm at the lower end of the column. The effect is great.

It is a perspective view which shows the use condition of the vehicle-mounted crane with which the vehicle was equipped. It is a perspective view which shows the retracted state of the vehicle-mounted crane with which the vehicle was equipped. It is a top view of the vehicle-mounted crane shown in FIG. It is a partially broken front view same as the above. It is a left side view same as the above. It is AA sectional drawing of FIG. It is BB principal part sectional drawing of FIG. It is a top view of the vehicle-mounted crane shown in FIG. It is a front view same as the above. It is a left side view same as the above. It is principal part sectional drawing which shows a state when a trochanter is located in the outward path start point of this track. It is principal part sectional drawing which shows the state when a trochanter is located in the area of the position in front of the outward path | route end point in the vicinity of the outward path | route end point of this track | orbit. It is principal part sectional drawing which shows a state when a trochanter is located in the position (tilt lower end) just before the outward path | route end point of this track | orbit. It is principal part sectional drawing which shows a state when a trochanter is located in the outward path | route end point of this track | orbit.

An embodiment of the present invention will be described below with reference to the drawings.
As shown in FIGS. 1 and 2, the in-vehicle crane according to the present invention is installed on the roof R corresponding to the rear seat of the vehicle C via the square plate-like base 1, and is used for wheelchairs, disabled people, etc. A horizontal arm 3 provided so that a belt 2 whose tip can be connected to a suspended object (not shown) can be extended and wound from the front end, and a column 4 in which the rear end of the horizontal arm 3 is arranged orthogonally to the lower end; A holder 5 that rotatably supports the upper side of the column 4, a front end of the horizontal arm 3 is directed to the rear side of the vehicle C on the roof R of the vehicle C, and the axis of the column 4 is aligned with the vehicle width direction L. Supporting the vehicle in a horizontally lying state through the holder 5 and reciprocating in the vehicle width direction L, and supporting the support column 4 in the suspended state through the holder 5 facing the vehicle entrance P at the end of the forward path It is mainly composed of the control means 6.
In the present invention, the forward path and the backward path of the attitude control means 6 are the same line set in the vehicle width direction L only in the reverse direction, and will be described with the forward path as the center for convenience.

The belt 2 is composed of a thin strip made of synthetic fiber, and a hook 2a is provided at the tip of the belt 2 so as to be hooked at an appropriate frame position of the folded wheelchair.
When lifting a human body, a dedicated sling (not shown) hooked on the hook 2a is used.
The belt 2 is inserted into the horizontal arm 3 and the support column 4 and is attached to a winch 7 installed at the upper end thereof so as to be rotatable together with the support column 4.

The horizontal arm 3 is formed of a hollow rectangular parallelepiped long in the front-rear direction, and is provided with a slit-shaped doorway through which the belt 2 is inserted at the front end of the bottom.
The support column 4 is formed in a cylindrical shape, and its lower end is inserted into and fixed to the rear end of the horizontal arm 3, and the front half circumferential wall of the lower end of the support column 4 in the horizontal arm 3 is cut away so that the horizontal arm 3 and the support column 4 inside The belt 2 is inserted so that the belt 2 can be inserted, and a direction changing roller of the belt 2 and a pair of upper and lower guide rollers are arranged in front and rear in the horizontal arm 3 (see FIG. 4).
A clip for securing the hook 2a when not in use is provided behind the bottom of the horizontal arm 3.
Further, a handle for use in manual operation of the horizontal arm 3 is provided at the bottom rear end and the left and right side front ends of the horizontal arm 3.

The holder 5 is formed with a convex upper surface portion 5a having a small width in the rear and a concave groove that is long in the front and rear at the center of the lower portion of the upper surface portion 5a. The main part 5b having the upper surface 5a and the left and right side edges of the wide part excluding the rear narrow part on the upper surface part 5a, and the lower half of the rear end thereof are extended to the rear by a predetermined length. Outer cylinder of the support column 4 with the upper end inserted and fixed in a circular hole penetrating the front side of the bottom surface of the top surface 5a and the base 5b, and a side wall 9 having a predetermined diameter trochanter (roller) 8 as a member It consists mainly of 10 and.
And the support | pillar 4 is mounted | worn with the holder 5 by inserting the support | pillar 4 in the outer cylinder 10 rotatably.
An upper portion of the support column 4 protruding from the upper surface portion 5a is rotatably attached to the upper surface portion 5a via a thrust bearing 11.

  In the suspended state of the column 4, the retracted posture is such that the axis of the horizontal arm 3 coincides with the longitudinal direction of the vehicle C and the front end of the horizontal arm 3 is directed toward the rear of the vehicle C. The drooping rod 7a is set so that the driving source 13 (described later) of the attitude control means 6 is in an operable state by turning on the switch lever of the microswitch 12 installed at a proper position on the upper surface portion 5a.

Further, below the outer cylinder 10, a posture holding rod 14 for holding the storage posture of the support column 4 is projected in parallel above the horizontal arm 3 in the storage posture.
The posture holding rod 14 has a distal end opening in the through hole 15 provided in the outer cylinder 10 among the through holes 15 and 16 that are provided so as to communicate with the outer cylinder 10 and the support column 4 in the retracted position of the horizontal arm 3. A cylinder 17 that communicates with the outer cylinder 10 is projected from the outer cylinder 10, and a plunger 18 that can be protruded and retracted from its tip end is inserted into the cylinder 17.

The plunger 18 is externally fitted in the cylinder 17 and is urged in a protruding direction by a compression coil spring (not shown) interposed between the plunger 18 and the cylinder 17 so as to be retained. The projecting length from the outer cylinder 10 is set to be equal to or greater than the thickness of the outer cylinder 10 and the column 4.
A knob 18a for projecting and retracting the plunger 18 protrudes from the base end of the cylinder 17, and a circular connecting portion having the same diameter as the inner diameter of the cylinder 17 is provided between the knob 18a and the plunger 18, and the cylinder 17 A ridge 18b that can be inserted and removed is provided in each of a pair of concave cutouts 17a that is engraved in the same diameter direction as the circular connecting portion in the one-diameter direction of the end face of the base end opening.

  Then, the knob 18a is pulled against the urging force of the compression coil spring, the protrusion 18b is detached from the concave notch 17a, and the knob 18a is rotated around its axis (in the illustrated example, 90 degrees phase) By hooking the distal end surface of the ridge 18b on the end surface of the proximal end of the cylinder 17, the plunger 18 is detached from the through hole 16, and the support column 4 is made rotatable within the outer cylinder 10, and the reverse of the above. By inserting the protrusion 18b into the concave notch 17a by the procedure, the plunger 18 is inserted into the through-hole 16 and held, and the horizontal arm 3 is held in the retracted position.

In the outer cylinder 10, a rotation positioning rod 14 a of the support column 4 is projected from a position slightly 180 degrees above the posture holding rod 14.
Since the rotary positioning rod 14a has the same structure as the posture holding rod 14, the same reference numerals are given to the same or corresponding parts as the posture holding rod 14, and description of the structure is omitted.
The rotational positioning rod 14a is different from the posture holding rod 14 in that there are a plurality of through holes 16 provided in the support column 4 at intervals on the same circumference, and the plunger 18 of the posture holding rod 14 is detached from the through hole 16. In this state, the plunger 18 of the rotary positioning rod 14a is inserted into and latched into an arbitrary through-hole 16, so that the horizontal arm 3 is held at a position that is phased by a predetermined angle from the retracted posture. The plunger 4 and the horizontal arm 3 are rotated and restricted by inserting and removing the plunger 18 from and through the through holes 16 of the 14a and the posture holding rod 14, respectively.

The holder 5 is attached to a linear guide 19 that is one of the constituent members of the attitude control means 6.
The linear guide 19 is wider than the main part 5b of the holder 5, is narrower than the interval between the side walls 9 and is formed in a concave groove shape that is long in the front and rear, and is half the length of the main body 19a so as to be wider than the main body 19a. And a reinforcing member 19b having a concave groove slightly smaller than the interval between the side walls 9, and the bottom surface of the bottom plate of the front half of the main body 19a is overlapped with the center of the top surface of the bottom plate of the reinforcing body 19b. The left and right sides of 19b are formed with double side walls 19c on which the upper ends of the upper and lower sides of the holder 5 can be placed on the respective upper ends.
Further, on the front end side of the bottom plate of the linear guide 19 (main body 19a and reinforcing body 19b), a support column 4 (outer cylinder 10) that rotates together with a holder 5 pivotally attached to the linear guide 19 as described later can be inserted and removed. A letter-shaped notch 19d is recessed. Hereinafter, the column 4 including the outer cylinder 10 is also referred to.

In addition, a linear rail 20 that is long in the vehicle width direction L is installed on a portion corresponding to the front of the vehicle C on the base 1 (the lower side in FIG. 3), and the bottom plate of the linear guide 19 is provided on the linear rail 20. A straddle-type slider 21 provided before and after the lower central axis is mounted.
The drive source 13 of the linear guide 19 is composed of an electric motor and is in the vicinity of the forward path starting point of the linear guide 19 and on the left side of the linear guide 19 on the base 1 in the forward travel direction (the left side of the center on the base 1 in FIGS. 3 and 8). ).

In front of the drive source 13 (on the right side in FIG. 3), a pair of belt wheels in which the respective axles stand upright on the base 1 are arranged before and after in the vehicle width direction L, and a timing belt is stretched over the belt vehicle to drive A drive gear 23 attached to the drive shaft of the drive source 13 is engaged with a gear 22 coaxial with the belt wheel adjacent to the source 13.
Then, an appropriate position of the timing belt and an appropriate position on the left side wall of the main body 19a of the linear guide 19 are connected by a connecting plate 24, and the drive gear 13 that rotates forward and backward by the operation of the drive source 13 causes the linear guide 19 to pass through the timing belt. Is provided so as to be able to reciprocate horizontally in the vehicle width direction L.

  A forward and backward stop lever 25 and a backward and forward stop lever 25a are suspended from the rear end of one side wall of the linear guide main body 19a, and the reverse stop microswitch 26 installed at the front and rear of each of the levers 25 and 25a, When the forward stop micro switch 26a is installed and the linear guide 19 that moves forward is positioned at the end of the forward path, the forward stop lever 25a presses the switch lever of the forward stop micro switch 26a to stop the drive source 13. When the linear guide 19 that moves backward (moves forward) is positioned at the starting point (return end), the reverse stop lever 25 presses the switch lever of the reverse stop micro switch 26 to stop the drive source 13. It is set like this.

  The drive source 13 is provided so as to be movable back and forth with respect to the gear 22 so that the engagement of the drive gear 23 with the gear 22 can be released in the event of a failure. This can be achieved by the back-and-forth movement of the lever 13a protruding to the right.

The holder 5 is attached to the linear guide 19 by pivotally attaching a support shaft 27 inserted and fixed in a shaft hole provided at the rear end of the left and right side walls of the trunk 5b in the holder 5 to the middle part of the left and right side walls of the linear guide body 19a. The linear guide 19 is provided so as to be rotatable in the vehicle width direction L, so that the posture of the linear guide 19 can be changed between the upright state of the holder 5 in which the support column 4 is in a horizontal lying state and the horizontal state of the holder 5 in which the support column 4 is in a suspended state. In this horizontal state, the linear guide 19 front end and the holder 5 front end are set to have the same vertical plane.
In the support shaft 27, a torsion coil spring 28 is externally fitted between the side wall of the holder main part 5b and the side wall of the linear guide main body 19a, and each end of the torsion coil spring 28 is connected to the side wall of the holder main part 5b and the linear guide main body 19a. The holder 5 is fixed to the side wall and biased in a direction to make the holder 5 stand upright.

On the base 1, on the left and right of the reciprocating path of the holder 5, a rail cam 29, which is one of the constituent members of the attitude control means 6 and on which the trochanter 8 provided at the rear part of the side wall 9 of the holder 5 rolls, is mounted on the base 1. Is installed across the entire vehicle width direction L.
The rail cam 29 is a track of the trochanter 8 (hereinafter also referred to as a track 29), and from the forward path start point (intermediate portion of the rail cam 29 in FIG. 10) W to the forward path end point (in FIG. 10, the right edge of the upper surface of the base 1). ) The section WX up to the position X near Z maintains a horizontal height parallel to the vehicle roof R so that the upright state of the holder 5 is held on the linear guide 19, and from the position X near the forward path end Z to the forward path end Z The section XY up to the position Y immediately before is tilted downward toward the position Y immediately before the forward path end Z so as to rotate the holder 5 from the upright state to the parallel horizontal state on the linear guide 19, and immediately before the forward path end point Z. The section YZ from the position Y to the forward path end point Z is set to maintain the same horizontal height as the inclined lower end (base 1 upper surface) Y so as to maintain the horizontal state of the holder 5.
With this configuration, when the trochanter 8 moves on the track 29 following the undulation along with the forward movement of the linear guide 19, the posture of the holder 5 (angle with respect to the linear guide 19) is changed in the vicinity of the forward path end point Z. The upright state is changed (rotated) from the upright state to the horizontal state, so that the posture of the horizontally lying support column 4 on the vehicle roof R can be changed to the suspended state at a position facing the vehicle entrance P.
Accordingly, the holder 5 (including the support column 4 and the horizontal arm 3) is lifted at a desired position (near the forward path end point Z or the return path start point Z) in conjunction with the reciprocating motion of the linear guide 19, and this series of operations is performed by the linear guide 19. This is possible only with the power source of the drive source 13 for reciprocation.

Further, the holder 5 is provided with a holder rotation restricting body 30 which is a constituent member of the attitude control means 6.
The holder rotation restricting body 30 arranges the front plate 31 with an intervention interval of the bottom plate of the linear guide 19 (the main body 19a and the reinforcing body 19b) along the width direction of the lower front end of the base plate 5b bottom plate in the holder 5, A side plate 33 extending rearward on both sides of the front plate 31 and having an outward projecting piece 32 with which the trochanter 8 can come into line contact is mounted on the side wall 9 of the holder 5 so as to be slidable back and forth. The front plate 31 is urged so as to be separated from the front end of the holder 5 forward by a predetermined interval by a tension spring 34 that is hooked at the end of each of the spring hanging protrusions provided at appropriate positions on the holder side wall 9 and the side plate 33. Yes.

Further, in the base 1, an abutment plate 35, which is a constituent member of the posture control means 6, is provided upright in front of the forward path end point Z of the track 29.
This stopper plate 35 is a holder rotation restricting body when the trochanter 8 is positioned at a position (inclined lower end) Y immediately before the forward path end point Z of the track 29 and the holder 5 is rotated horizontally on the linear guide 19. 30 outward projecting pieces 32 are abutted and latched, and in the state of latching the outward projecting pieces 32 to the retaining plate 35, the holder rotation restricting body 30 itself cannot move forward thereafter, The linear guide 19 and the holder 5 can move forward by the distance between the front end of the holder 5 and the front plate 31 until the front ends of the linear guide 19 and the holder 5 are arranged on the front plate 31. The outward projecting piece 32 is sandwiched between the trochanter 8 and the stopper plate 35 that have reached the forward path end point Z.

  In the drawing, 36 is a stopper provided on the rear end extension line of the linear rail 20 on the base 1 so that the rear end of the linear guide 19 is stopped at the starting point of the linear guide 19, and 37 and 37a are linear guides. Stopper 39 provided on the right and left of the linear rail 20 on the base 1 so that the convex portions 38 and 38a hanging down at the right and left appropriate positions on the bottom surface of the bottom plate of 19 are stopped at the end of the forward path of the linear guide 19, It is a stopper that stops the strut 4 (outer cylinder 10) that is inserted into the notch 19d and hangs down.

In the in-vehicle crane configured as described above, the rear end of the linear guide 19 is stopped by the stopper 36 on the vehicle roof R in the retracted state shown in FIGS.
In such a state, the trochanter 8 is located at the forward path starting point W on the track 29, thereby maintaining the upright state of the holder 5 on the linear guide 19, and the column 4 and the horizontal arm 3 are arranged at the lower end of the column 4. Is supported by the holder 5 in an L shape in plan view in a horizontally lying state in which the guide is directed toward the forward end of the linear guide 19.

In order to use the above-described in-vehicle crane, the drive source 13 is first operated to advance the linear guide 19 along the linear rail 20 via the timing belt and the connecting plate 24 in the forward travel direction.
At the same time, the trochanter 8 moves forward on the track 29 in the forward traveling direction.
The section WX of the trochanter 8 up to the vicinity position X of the forward end point Z is maintained at a horizontal height parallel to the vehicle roof R in the section WX, so that the holder 5 is placed on the linear guide 19 moving forward as described above. The upright state and the horizontal lying state of the support column 4 and the horizontal arm 3 are maintained.

Then, the linear guide 19 travels on the forward path and reaches the end in the vehicle width direction (right side in FIG. 8) on the vehicle roof R. As shown in FIG. 12, the trochanter 8 moves from the position X near the forward path end point Z. When entering the section XY up to the position Y immediately before the forward path end point Z, the track 29 is inclined downward, so that the holder 5 on the linear guide 19 gradually moves from the upright state to the traveling direction according to the height position. The column 4 also tilts the horizontal arm 3 downward.
Next, as shown in FIG. 13, when the trochanter 8 is located at the position Y immediately before the forward end point Z (inclined lower end Y of the inclined section XY), the holder 5 on the linear guide 19 is converted into a horizontal state. The support column 4 supported by the holder 5 hangs down against the vehicle entrance P, and the horizontal arm 3 at the lower end thereof is in a state where the front end is directed to the vehicle C.

In such a state, in the holder 5, the left and right sides of the upper surface portion 5 a are arranged on the double side wall 19 c of the linear guide 19, and the bottom plate of the basic portion 5 b is superimposed on the bottom plate of the linear guide 19. 5 and the front end of the linear guide 19 coincide with each other, the support 4 is inserted into the notch 19 d of the linear guide 19, and the support 4 is stopped by the stopper 39.
Also, the holder rotation restricting body 30 rotates with the holder 5 as it is, and its front plate 31 is arranged in front of the bottom of the front end of the holder base 5b bottom plate with an intervention interval of the bottom plate of the linear guide 19. The outward projecting piece 32 at the rear end is brought into contact with the inner surface of the stopper plate 35.

The holder rotation restricting body 30 with the outward projecting piece 32 hooked on the stopper plate 35 cannot be advanced even if the linear guide 19 further advances, and the state is maintained, but the holder 5 is further changed. As the linear guide 19 advances, the trochanter 8 advances to the forward end point Z on the track 29 together with the linear guide 19 against the urging force of the tension spring 34 and presses the outward projecting piece 32 together. (See Fig. 14).
At this time, the convex portions 38 and 38a hanging from the bottom plate of the linear guide 19 are stopped against the stoppers 37 and 37a, and the forward stop lever 25a presses the switch lever of the forward stop micro switch 26a to stop the drive source 13. .

  In such a state, the trochanter 8 firmly holds the outward projecting piece 32 between the stopper plate 35 and firmly holds the state, and the linear guide 19 bottom plate is placed on the front plate 31 of the holder rotation restricting body 30. By arranging the front end of the holder 5 through the front end, the front plate of the holder rotation restricting body 30 connected and integrated with the holder 5 and the side plate 33 at the lower front end of the bottom plate of the linear guide 19 on which the holder 5 is horizontally mounted. Since 31 is hooked, the holder 5 is prevented from rotating up and down.

Here, the in-vehicle crane has a retracted posture in which the support 4 is suspended from the vehicle entrance P and the front end of the horizontal arm 3 is directed rearward of the vehicle C.
By pulling the knob 18a of the posture holding rod 14 and the rotational positioning rod 14a from this state, the knob 18a is rotated 90 degrees to hold the pulled state of each knob 18a, and each plunger 18 is detached from the through hole 16 of the column 4, The rotation restriction of the horizontal arm 3 and the column 4 is released, the horizontal arm 3 is manually rotated freely around the column 4, and the front end of the horizontal arm 3 is directed to a suspended object waiting at an arbitrary position outside the vehicle. Then, the knob 18a of the rotational positioning rod 14a is returned to temporarily restrict the rotation of the horizontal arm 3.
Next, remove the hook 2a secured by the clip at the bottom of the horizontal arm 3, actuate the winch 7, feed out the belt 2 and lower the hook 2a to the suspended object so that the suspended object is disabled. If the sling is attached to the hook 2a, the hook 2a is directly hooked on the object to be hung.

Thereafter, the belt 2 is rewound by the operation of the winch 7 to lift the suspended object to the seating surface of the vehicle floor or the vehicle seat (passenger seat or rear seat).
Next, the rotation positioning rod 14a is pulled and held again to release the rotation restriction of the horizontal arm 3, and the horizontal arm 3 is manually rotated to move the suspended object to the vehicle floor or vehicle seat in the vehicle.

At this time, since the belt 2 fed out from the winch 7 passes through the inside of the horizontal arm 3 and the column 4, the belt 2 is not caught by an obstacle, and the belt 2 can rotate together with the column 4. Since the winch 7, the support column 4 and the horizontal arm 3 rotate together, the belt 2 is not twisted.
When the object to be suspended is moved into the vehicle by the rotation of the horizontal arm 3 as described above, the holder 5 and the side plate 33 are integrally connected to the lower part of the front end of the bottom plate of the linear guide 19 on which the holder 5 is horizontally mounted. Because the front plate 31 of the holder rotation restricting body 30 is hooked, the holder 5 rotates up and down around the pivoting portion (support shaft 27) with the linear guide 19 at the rear end according to the weight of the object to be suspended. In particular, when the horizontal arm 3 rotates into the vehicle, the weight of the object to be suspended prevents the holder 5 from being lifted with the support shaft 27 as a fulcrum, so that a stable suspended state is always maintained. it can.

When the winch 7 is actuated, the belt 2 is fed out, the object to be suspended is lowered to the vehicle floor or the vehicle seat, and the hook 2a or sling of the object to be suspended is released. And hook 2a with the clip at the bottom of the horizontal arm 3.
Thereafter, the horizontal arm 3 is rotated to the retracted posture with the front end directed toward the rear of the vehicle C, the posture holding rod 14 and the rotation positioning rod 14a are returned, and the plungers 18 are inserted into the through holes 16 and locked. To do.
When the support column 4 returns to the retracted position, the drooping rod 7a below the winch 7 turns on the switch lever of the micro switch 12, so that the drive source 13 is in an operable state, and the drive source 13 is operated in the reverse rotation as described above. .

  By the operation of the drive source 13, the linear guide 19 moves backward in the reverse procedure to the above, so that the holder 5 rotates from the horizontal state to the upright state on the vehicle roof R, and the column 4 and the horizontal arm 3 are moved. When the rear end of the linear guide 19 is stopped by the stopper 36 when the horizontal guide state is reached, the reverse stop lever 25 presses the switch lever of the reverse stop micro switch 26, so that the drive source 13 stops, The storage of the on-vehicle crane on the vehicle roof R is completed.

2 Belt 3 Horizontal arm 4 Post 5 Holder 6 Attitude control means 7 Winch 8 Trochanter 9 (Holder) side wall
19 Linear guide
19d cutout
20 Rail cam
30 Holder rotation restricting body
31 Front plate
32 outward protrusion
33 Side plate
34 Spring
35 Stopping plate C Vehicle L Vehicle width direction P Vehicle entrance / exit R (Vehicle) Roof W Outward starting point X Near position Y Immediate position (lower slope)
Z Outbound end point WX section XY section YZ section

Claims (4)

  A horizontal arm in which a belt whose front end can be connected to a suspended object can be extended and wound from the front end, a support column in which the rear end of the horizontal arm is arranged orthogonally to the lower end, and a holder that rotatably supports the support column And supports the column on the roof of the vehicle in a horizontally lying state with its axis line aligned with the vehicle width direction through a holder and reciprocates in the vehicle width direction, facing the vehicle entrance / exit at the end of the forward path. And an attitude control means for supporting the column in a suspended state via a holder.   The attitude control means is provided on the vehicle roof so as to be able to reciprocate horizontally in the vehicle width direction, and the rear end of the holder is pivotally pivoted in the vehicle width direction so that a column that rotates with the holder can be inserted and removed. A linear guide with a notch recessed on the front end side of the bottom plate, a trochanter provided at the rear side of the side wall of the holder, and a track on which the trochanter rolls, the section from the forward path start point to the position near the forward path end point is the holder The horizontal height parallel to the vehicle roof is maintained so that the upright state of the vehicle is maintained on the linear guide. The section from the position immediately before the end of the forward path to the end of the forward path is the same horizontal as the lower end of the tilt so that the horizontal state of the holder is maintained. Les that maintain the height The front plate is arranged at the bottom of the front end of the cam and the holder along the width direction along the width of the linear guide bottom plate. The front plate extends rearward on both sides of the front plate, and the trochanter makes line contact with the front end. A holder rotation restricting body in which a side plate provided with possible outward projecting pieces is slidably mounted on the side wall of the holder and urged by a spring so that the front plate is separated from the front end of the holder forward by a predetermined interval. And an abutment plate with which the outward projecting piece abuts and is latched immediately in front of the forward end of the track when the trochanter is positioned immediately before the end of the forward pass of the track. The described on-board crane.   3. The in-vehicle crane according to claim 2, wherein the trochanter that has reached the end point of the forward path of the track sandwiches the outward projecting piece of the holder rotation restricting body that is in contact with and stopped by the stop plate.   4. The in-vehicle crane according to claim 1, wherein the belt is attached to a winch that is inserted through the horizontal arm and the inside of the support and is rotatably installed together with the support.

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