JP2006298540A - Operation stick device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To remarkably improve degree of freedom in design of an operation stick device itself and a device to be provided with the operation stick device, in regard to an operation stick device provided in a neutral position in usual and provided with an operation stick to be tilted between one side maximum tilting position and the other side maximum tilting position on both sides of a neutral position. <P>SOLUTION: This operation stick device 1 is provided with a shifter rod 10 supported by the operation stick 2 freely to swing and extended in parallel with the swing plane of the operation stick 2, a compression spring 20 put on the shifter rod, spring holders 11 and 12 provided in the shifter rod and abut on both ends of the compression spring to hold the compression spring at the predetermined position on the shifter rod, spring stoppers 30 and 31 provided in the predetermined positions separated from a support shaft to abut on both ends of the compression spring held by the shifter rod, and a neutral position adjusting means 50 for adjusting neutral position of the operation stick by adjusting at least one of position of the compression spring on the shifter rod and position of the spring stopper separated from the support shaft. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

    The present invention relates to an operating rod device having an operating rod that can normally occupy a neutral position and can tilt between a maximum tilt position on one side and a maximum tilt position on the other side across the neutral position. The present invention relates to a configuration for adjusting the neutral position of the kite.

    A forklift (forklift truck) A shown in FIG. 20 includes a vehicle body B and a work machine W installed in front of the vehicle body B, and a dashboard D arranged in parallel with the handle H in front of the operator seat S. Are provided with operation levers (operating rods) L, L for controlling the operation of the work machine W.

  The operating lever L operates the potentiometer (operated object) by its swinging, adjusts the output voltage from the potentiometer, and controls the operation of the electromagnetic proportional valve of the hydraulic circuit. It is made to operate according to the tilt angle.

  As shown in FIGS. 21 to 24, the operation lever L that constitutes the operation lever device (operation lever device) M together with the main body C attached to the dashboard D is a support shaft installed on the base frame F of the main body C. G is swingably supported and occupies the neutral position n in a normal state where no load is applied by the operator's operation, and the one side maximum tilt position a and the other side maximum tilt across the neutral position n during operation. It is comprised so that it can tilt between position b.

  Here, the operation lever device M mechanically adjusts the neutral position n of the operation lever L and the one-side maximum tilt position a and the other-side maximum tilt position b of the operation lever L. Means for adjusting.

  As shown in FIG. 23, the neutral position adjusting means N for adjusting the neutral position n of the operating lever L includes a pair of arms Na supported by the support shaft G so as to cross each other, and the lower ends of the arms Na. And a tension spring Ns moored to the arm Na and an adjustment bolt Nb screwed to the upper end of each arm Na.

  In the neutral position adjusting means N, a pair of arms Na urged so that their lower parts approach each other by the tension spring Ns are brought into contact with a stopper shaft H installed below the support shaft G as shown in the figure. In the state, the neutral position n of the operating lever N in the normal state can be adjusted by moving the adjusting bolt Nb in each arm Na forward and backward and moving the positioning pin Lp provided on the base plate Lb of the operating lever L.

  On the other hand, as shown in FIG. 24, the base plate Lb of the operation lever L is fixedly provided with a pair of brackets La and Lb facing each other with the stopper shaft H interposed therebetween. The adjustment bolt Ia that comes into contact with the stopper shaft H is screwed in when the lever is tilted to the one side (right side in the figure), and the other lever Lb is tilted to the other side (left side in the figure). An adjustment bolt Ib that contacts the stopper shaft H is screwed together.

  That is, by moving the adjustment bolt Ia of one bracket La forward and backward, the one side maximum tilt position a of the operation lever L can be adjusted, and by moving the adjustment bolt Ib of the other bracket Lb forward and backward The other side maximum tilt position b of the lever L can be adjusted.

  Here, the above-mentioned prior art known to the applicant is a publicly known / public technique and is not related to the known literature invention, and therefore there is no prior art document information to be described.

    By the way, in the above-described conventional operating lever device M, since a means for adjusting the neutral position of the operating lever L and a means for adjusting the maximum tilting position of the operating lever L are provided, an increase in the size of the structure cannot be avoided.

  Further, in the above-described conventional operating lever device M, the pair of arms Na is urged by the tension spring Ns, and therefore, the tension spring Ns must be disposed in a region opposite to the support shaft G across the stopper shaft H. Therefore, not only does the appearance of the operating lever L extend in the extending direction, but also the design freedom of the operating lever device, and further, the design flexibility of the side equipped with the operating lever device is reduced. was there.

  In view of the above circumstances, the present invention provides an operating rod device having an operating rod that is normally occupied at a neutral position and can be tilted between a maximum tilt position on one side and a maximum tilt position on the other side across the neutral position. The object is to greatly improve the degree of freedom of design of the operating rod device and the side equipped with the operating rod device.

    In order to achieve the above-mentioned object, the operating rod device according to the present invention is supported so as to be swingable with respect to the support shaft and normally occupies a neutral position, and has a maximum tilt position on one side across the neutral position. In an operating rod device that includes an operating rod that can be tilted between the maximum tilting position on the other side and that operates an object to be operated by tilting of the operating rod, the swing plane of the operating rod is supported by the operating rod so as to be swingable. A shifter rod extending in conformity with the shifter rod, a compression spring extrapolated to the shifter rod, a spring holder provided on the shifter rod to abut against both ends of the compression spring and holding the compression spring in a predetermined position on the shifter rod, and a support shaft A spring stopper that is provided at a predetermined distance and is in contact with both ends of the compression spring held by the shifter rod, and the position of the compression spring on the shifter rod and the position of the spring stopper from the support shaft It is characterized by comprising; and a neutral position adjusting means for adjusting the neutral position of the adjustment to operating rod at least one of.

    In the structure of the operating rod device according to the present invention, the shifter rod for holding the compression spring that defines the neutral position of the operating rod can be arranged at a free angle with respect to the operating rod. According to the operating rod device related, the operating flexibility of the operating rod device and the side equipped with the operating rod device can be greatly improved.

Hereinafter, the present invention will be described in detail with reference to the drawings illustrating some embodiments.
1 to 13 show an embodiment of an operating rod device according to the present invention, which is suitable for use in a forklift which is an aspect of a working vehicle.

  Here, the configuration of the forklift (not shown) is not different from the conventional example shown in FIG. 16, and the operating lever device (operating rod device) of the embodiment described in detail below is also a hydraulic circuit as in the conventional example. In order to control the operation of the electromagnetic proportional valve, the potentiometer is operated by swinging the operation lever (operating rod), and the output voltage from the potentiometer is adjusted.

  As shown in FIGS. 1 to 6, the operating lever device 1 in the embodiment includes two operating levers 2 juxtaposed and a device body 3 that supports each operating lever 2 so as to be swingable. The operating lever 2 occupies the neutral position in a normal state where no load is applied by the operator's operation, and the maximum forward tilt position (one maximum tilt position) and the maximum rear tilt position across the neutral position during operation. It is configured to be able to tilt between (the other side maximum tilt position).

  The apparatus body 3 includes a base frame 4 for supporting various components together with the operation lever 2, and the base frame 4 places the operation lever apparatus 1 at a predetermined position of a forklift (not shown). It has a bottom plate 4b serving as a mounting portion for installation, a left side plate 41, a right side plate 4r, and a front plate 4f.

  One support shaft 5 for supporting two juxtaposed operation levers 2 is installed on the left side plate 4l and the right side plate 4r of the base frame 4, and the front plate 4f of the base frame 4 is provided on the front plate 4f. The potentiometers (objects to be operated) 6 that are individually operated by the respective operation levers 2 are mounted side by side.

  On the other hand, the operation lever 2 in the operation lever device 1 includes a hub 2H that is rotatably inserted with respect to the support shaft 5 of the device body 3, and a rocking member fixed to the hub 2H in a posture orthogonal to the support shaft 5. It has a moving plate 2P, a lever rod 2A having a base end fixed to the swinging plate 2P and provided with a grip 2G at the distal end, and a cam rod 2C also fixed to the swinging plate 2P.

  The cam rod 2 </ b> C of the operation lever 2 is engaged with the cam plate 6 </ b> C fixed to the rotating shaft of the potentiometer 6 described above, and the operation lever 2 supported so as to be swingable with respect to the support shaft 5. When tilted, the pivot shaft of the potentiometer 6 is operated via the cam rod 2C and the cam plate 6C, whereby an output voltage corresponding to the tilt angle of the operation lever 2 is obtained from the potentiometer.

  Further, the swing plate 2P of the operation lever 2 is formed with a forward tilt restricting portion 2Pa and a rear tilt restricting portion 2Pb at the edge facing the front plate 4f of the base frame 4, while the base frame 4 The front plate 4f includes an adjustment bolt 7a that comes into contact with the forward tilt restricting portion 2Pa when the operation lever 2 is tilted forward (one side), and the rear when the operation lever 2 is tilted rearward (the other). The adjustment bolt 7b that comes into contact with the inclination restricting portion 2Pb is screwed, and by moving the adjustment bolt 7a and the adjustment bolt 7b forward and backward, the front side maximum tilt position and the rear side maximum tilt position of the operation lever 2 are obtained. Can be adjusted.

  A shifter rod 10 is supported on the swing plate 2P of the operation lever 2 at a position above and behind the support shaft 5 so as to be swingable. The shifter rod 10 swings the operation lever 2 with respect to the support shaft 5. It extends along the moving plane, and in the embodiment, it extends in a posture inclined toward the rear side with respect to the operation lever 2 and slightly downward.

  As shown in FIG. 7, the shifter rod 10 includes a yoke 11 pin-coupled to the swing plate 2P of the operating lever 2 and a screw shaft 12A screwed into a screw hole 11S formed in the base 11A of the yoke 11. The long bolt 12 and a fork 13 fixed to the head 12H of the bolt 12 have a pair of fork pins 13p extending in parallel.

  Further, a compression spring 20 is extrapolated to the shifter rod 10, and both end portions of the compression spring 20 come into contact with the base portion 11 </ b> A of the yoke 11 and the head portion 12 </ b> H of the bolt 12 through washers 21, respectively. ing.

  That is, the yoke 11 (specifically, the base portion 11A) and the bolt 12 (specifically, the head portion 12H) constitute a spring holder for holding the compression spring 20 at a predetermined position on the shifter rod 10.

  Further, as shown in FIG. 8, the spring length of the compression spring 20 held by the shifter rod 10 can be changed by turning the bolt 12 together with the fork 13 and screwing the bolt 12 relative to the yoke 11. As a result, the substantial position of the compression spring 20 on the shifter rod 10 is adjusted.

  That is, the yoke 11 and the bolt 12 in the shifter rod 10 constitute neutral position adjusting means 50 for adjusting the neutral position of the operation lever 2 by adjusting the position of the compression spring 20 on the shifter rod 10.

  A guide rod 8 extending parallel to the support shaft 5 is loosely fitted between the fork pins 13p and 13p on the fork 13 of the shifter rod 10, and the guide rod 8 maintains the posture of the shifter rod 10. In addition, the movement of the shifter rod 10 in the axial direction accompanying the swinging of the operation lever 2 is guided, and further, the bolt 12 is prevented from turning carelessly with respect to the yoke 11 of the shifter rod 10.

  Incidentally, the guide rod 8 is constructed over the right side plate 4r of the base frame 4 and the wall plate 4w erected on the bottom plate 4b, so that it can be easily detached from the base frame 4 during the adjustment work described later. It is configured.

  On the other hand, both end portions of the compression spring 20 held by the shifter rod 10 are in contact with a fixed stopper plate 30 and a moving stopper plate 31 constituting a spring stopper via washers 21 respectively.

  The fixed stopper plate 30 is formed integrally with the bottom plate 4b of the base frame 4 and is fixedly erected at a predetermined position separated from the support shaft 5, while the moving stopper plate 31 is formed as shown in FIG. The nuts 34 and 35 are supported by the nuts 34 and 35 attached to the bolts 33 so as to be close to / separated from the fixed stopper plate 30 via a pair of bolts 32 and 33.

  In the operation lever device 1 having the above-described configuration, the operation lever is operated in a state where both end portions of the compression spring 20 held by the shifter rod 10 are in contact with the fixed stopper plate 30 and the movable stopper plate 31 via the washers 21, respectively. 2 will occupy the neutral position.

  When the operator tilts the operation lever 2 forward, the compression spring 20 sandwiched between the bolt 12 of the shifter rod 10 that moves forward and the moving stopper plate 31 is compressed, and when the operation lever 2 is further tilted forward, the swing plate The 2P forward tilt restricting portion 2Pa comes into contact with the adjusting bolt 7a of the base frame 4, and the operation lever 2 is stopped at the front-side maximum tilt position.

  On the other hand, when the operator tilts the operation lever 2 backward, the compression spring 20 sandwiched between the yoke 11 of the reversing shifter rod 10 and the fixed stopper plate 30 is compressed, and when the operation lever 2 is further tilted backward, The rearward tilt restricting portion 2Pb of the moving plate 2P comes into contact with the adjusting bolt 7b of the base frame 4, and the operation lever 2 stops at the rearward maximum tilting position.

  Further, when the operator pulls out the force from the operation lever 2 in a state where the operation lever 2 is tilted forward or rearward, the elastic return force of the compression spring 20 that has been compressed as the operation lever 2 is tilted causes the above-described operation. The operation lever 2 is pulled back to the neutral position, and both end portions of the compression spring 20 abut against the fixed stopper plate 30 and the movable stopper plate 31 as described above, and normally occupy the neutral position.

  Here, in the operation lever device 1 having the above-described configuration, when adjusting the neutral position of the operation lever 2, first, as shown in FIG. 10, the shifter rod 10 is attached to the shifter rod 10 so that it can freely advance and retreat. The length of the compression spring 20 is reduced, the distance between the fixed stopper plate 30 and the movable stopper plate 31 is increased, and the guide rod 8 that restricts the turning of the bolt 12 in the shifter rod 10 (see FIG. 1 and the like). Is detached from the base frame 4 (see FIG. 1 and the like), and the operating lever 2 is held at a desired neutral position, and is held using appropriate means so as not to move.

  In the case where a plurality of operation levers 2 are provided as in the operation lever device 1 in the embodiment, the individual operation levers 2 are used using a jig or the like so that the grips 2G of the operation levers 2 are aligned in a straight line. It goes without saying that it is necessary to align the attitudes of

  After that, as shown in FIG. 11, the bolt 12 in the shifter rod 10 is turned, and the bolt 12 is moved forward and backward with respect to the yoke 11, whereby one end portion (right end portion in the figure) of the compression spring 20 is a washer. The spring length of the compression spring 20, that is, the position of the compression spring 20 on the shifter rod 10 is adjusted so as to come into contact with the fixed stopper plate 30 via 21.

  Next, as shown in FIG. 12, a guide rod 8 loosely fitted to the fork 13 is attached to the base frame 4 (see FIG. 1 and the like) and the movement stopper plate 31 is slid in order to restrict the turning of the bolt 12 in the shifter rod 10. The operation lever 2 is fixed by tightening the nuts 34 and 35 and fixing the moving stopper plate 31 at a position where the other end (the left end in the figure) of the compression spring 20 abuts via the washer 21. The operation of adjusting the neutral position of the is completed.

  Further, after adjusting the neutral position of the control lever 2, the control lever 2 is tilted forward as shown in FIG. 13A, and the forward tilt restriction of the swing plate 2P is performed at a position where a desired output is obtained from the potentiometer 6. While the adjustment bolt 7a is moved forward and backward so as to come into contact with the portion 2Pa, the operation lever 2 is tilted backward as shown in FIG. 13 (b), and at the position where a desired output is obtained from the potentiometer 6, the swing plate 2P is moved backward. The operation of adjusting the front-side maximum tilt position and the rear-side maximum tilt position of the operation lever 2 is completed by advancing and retracting the adjustment bolt 7b so as to come into contact with the tilt regulating portion 2Pb.

  According to the operation lever device 1 having the above-described configuration, the shifter rod 10 for holding the compression spring 20 that defines the neutral position of the operation lever 2 can be disposed at a free angle with respect to the operation lever 2. .

  That is, the shifter rod 10 can take various layouts with respect to the operation lever 2 such as a horizontal direction, a vertical direction, and an oblique direction following the swinging plane of the operation lever 2. Not only can the degree of freedom of design of the device 1 be greatly improved, but also the degree of freedom of design on the side equipped with the operating lever device 1 can be greatly improved.

  FIG. 14 shows another embodiment of an operating lever device according to the present invention. This operating lever device 1 'has a shifter rod 10' formed by fixing a screw shaft 12 'to a yoke 11'. A spring holder 13 'is loosely fitted on the screw shaft 12' of the shifter rod 10 ', and nuts 14' and 15 'are screwed so as to sandwich the spring holder 13'.

  The compression spring 20 ′ externally inserted in the spring holder 13 ′ is in a predetermined position on the shifter rod 10 ′ via the spring holder 13 ′ because both ends thereof abut against the flange of the spring holder 13 ′ via the washer 21 ′. Is held in.

  Further, both end portions of the compression spring 20 'are fixed to one side stopper plate 30' and the other side stopper plate 31 'as spring stoppers, which are fixedly provided on the base frame 4', via washers 21 ', respectively. It is in contact.

  Here, the position of the compression spring 20 'on the shifter rod 10' is adjusted by moving the spring holder 13 'along the screw shaft 12' and fixing it with the nuts 14 ', 15'.

  That is, instead of changing the spring length and adjusting the substantial position of the compression spring, the position on the shifter rod 10 'is adjusted by moving the entire compression spring 20' while maintaining the spring length as it is. The screw shaft 12 ′, the spring holder 13 ′, and the nuts 14 ′ and 15 ′ of the shifter rod 10 ′ are neutral positions for adjusting the neutral position of the operation lever 2 by adjusting the position of the compression spring 20 ′ on the shifter rod 10. The adjusting means 50 'is configured.

  The configuration other than that described above is the same as that of the operation lever device 1 described above, and a detailed description thereof will be omitted by assigning the same reference numerals as those in FIGS.

  Also in the configuration of the embodiment described above, like the operation lever device 1 described above, not only the design freedom of the operation lever device 1 'is greatly improved, but also the design freedom on the side equipped with the operation lever device 1' is free. The degree can be greatly improved.

  FIG. 15 shows still another embodiment of an operating lever device according to the present invention. This operating lever device 1 ″ has a shifter rod 10 ″ formed by fixing a rod 12 ″ to a yoke 11 ″. A pair of rings 13 ″ and 14 ″ as spring holders are fixed to the rod 12 ″ of the shifter rod 10 ″.

  The compression spring 20 ″ extrapolated to the rod 12 ″ is held at a predetermined position on the shifter rod 10 ″ by contacting both ends of the compression spring 20 ″ with a pair of rings 13 ″ and 14 ″ via washers 21 ″. Yes.

  The base frame 4 ″ is provided with a slide block 32 ″ in which one side stopper plate 30 ″ and the other side stopper plate 31 ″ as spring stoppers are fixedly mounted. The bolt 40 is rotatably supported on the base frame 4 ″. ″.

  Further, both end portions of the compression spring 20 ″ held by the shifter rod 10 ″ are in contact with the one side stopper plate 30 ″ and the other side stopper plate 31 ″ through washers 21 ′.

  Here, by rotating the bolt 40 ″ supported on the base frame 4 ″ and screwing the slide block 32 ″, the compression spring 20 is moved along with the movement of the one-side stopper plate 30 ″ and the other-side stopper plate 31 ″. "And the shifter rod 10" move, and the operation lever 2 swings by the movement of the shifter rod 10 ".

  That is, instead of adjusting the position of the compression spring on the shifter rod, the positions of the one-side stopper plate 30 ″ and the other-side stopper plate 31 ″, that is, from the support shaft 5 of the spring stopper that contacts both ends of the compression spring 20 ″. By adjusting the position, the swing angle of the operation lever 2 is adjusted. A slide block 32 ″ having a fixed stopper plate 30 ″ on one side and a stopper plate 31 ″ on the other side, and the slide block 32 ″. The bolt 40 ″ that is screwed onto the shaft constitutes a neutral position adjusting means 50 ″ that adjusts the position of the spring stopper from the support shaft 5 to adjust the neutral position of the operation lever 2.

  The configuration other than that described above is the same as that of the operation lever device 1 described above, and a detailed description thereof will be omitted by assigning the same reference numerals as those in FIGS.

  Also in the configuration of the above-described embodiment, as in the case of the operation lever device 1 described above, not only the design freedom of the operation lever device 1 ″ is greatly improved, but also the design freedom on the side equipped with the operation lever device 1 ″ is free. The degree can be greatly improved.

  In each of the above-described embodiments, the shifter rod that holds the compression spring is pin-coupled above and behind the support shaft, that is, behind the lever rod in the operation lever, but the shifter rod is supported in front of the lever rod. Further, the shifter rod can be supported by a mounting portion provided below the support shaft, that is, on the opposite side of the lever rod with the support shaft interposed therebetween.

  Further, in each of the above-described embodiments, an operation lever device that is used by tilting an operation lever extending in a substantially vertical direction in the front-rear direction is exemplified. However, the operation lever device is installed on, for example, a wall surface and extends in a substantially horizontal direction. Of course, the present invention can be effectively applied to an operation lever device that is used by tilting an existing operation lever in the vertical direction.

  FIGS. 16 to 19 show other embodiments of the operating rod device according to the present invention, which are suitable for use in a forklift that is one mode of a working vehicle, and the operation pedal in each embodiment described in detail below. The device (operating rod device) is for adjusting the output voltage from the potentiometer by operating the potentiometer by swinging the operating pedal (operating rod) in order to control the operation of the traveling motor.

  The operation pedal device 100 shown in FIGS. 16 and 17 includes a single operation pedal 102 that extends to the left and right at the feet of a seated operator, and a device main body 103 that supports the operation pedal 102 so as to be swingable. The left pad 102L and the right pad 102R are fixed to both ends of the arm 102A in the operation pedal 102, respectively.

  The operation pedal 102 is supported in such a manner that the left pad 102L and the right pad 102R can move in the front-rear direction via a support shaft 105 erected on the frame 104 of the apparatus main body 103, respectively. In a normal state where no load is applied due to the operation, the position is occupied at the neutral position shown by the solid line in FIG.

  Further, the operation pedal 102 has a left-side maximum depression position (one-side maximum tilt position) when tilted in the direction indicated by solid arrows l and l in FIG. It is configured to be able to tilt between the right maximum stepping position (the other side maximum tilting position) when tilted in the direction indicated by the broken arrows r, r.

  On the other hand, a potentiometer (object to be operated) 106 attached to the frame 104 is provided with a cam plate 106C on its rotating shaft, and an arm 102A of the operation pedal 102 has a cam pin 102C that engages with the cam plate 106C. Is provided.

  Thus, when the operation pedal 102 is tilted, the rotation shaft of the potentiometer 106 is operated via the cam rod 102C and the cam plate 106C, so that the voltage corresponding to the tilt angle of the operation lever 102 is applied from the potentiometer 106. Is output, and the controller 100C executes the operation control of the traveling motor 100M based on the output voltage.

  A shifter rod 110 is swingably supported on the arm 102A of the operation pedal 102. The shifter rod 110 includes an externally inserted compression spring 120 and holds the operation pedal 102 in a neutral position. In addition, components for adjusting the neutral position of the operation pedal 102 are provided in cooperation with each other.

  Here, the configuration of the operation pedal device 100 described above is basically the same as that of the operation lever device 1 shown in FIGS. 1 to 13 except for the layout change accompanying the use of the operation pedal 102, and the operation pedal 102 is neutral. The mechanism for holding the position and the mode for adjusting the neutral position of the operation pedal 102 are the same as those of the operation lever device 1 shown in FIGS. 1 to 13. Detailed description of the configuration will be made by adding the reference numerals in the 100s in FIG. 16 and FIG. 17 to which the reference numerals in FIGS. Is omitted.

  On the other hand, in the operation pedal device 200 shown in FIGS. 18 and 19, the operation pedal 202 moves the left pad 202 </ b> L and the right pad 202 </ b> R in the vertical direction via the support shaft 205 provided in the device main body 203. The operation pedal 202 is occupied at a neutral position shown by a solid line in FIG. 18 in a normal state where the load is not applied by the operation of the operator.

  Further, the operation pedal 202 has a right-side maximum depression position (one-side maximum tilt position) when tilted in the direction indicated by solid arrows r and r in FIG. It is configured to be able to tilt between the leftmost maximum depression position (the other side maximum tilt position) when tilted in the direction indicated by the broken arrows l and l.

  Here, the configuration of the operation pedal device 200 described above is the same as the operation pedal device 100 described above except that the operation pedal 202 swings around a support shaft 205 extending in the front-rear direction. In FIG. 18 and FIG. 19, constituent elements having the same function as those in FIG. 18 are given reference numerals in the 200s in which 100 is added to the reference numerals in FIG. 16 and FIG. .

  In the operation pedal device 100 and the operation pedal device 200 having the above-described configuration, as in the case of the operation lever device 1 described above, the design flexibility can be greatly improved, and the operation pedal device 100 or the operation pedal can be achieved. The degree of freedom of design on the side equipped with the device 200 can be greatly improved.

  In each of the above-described embodiments, the operation rod device that adjusts the output voltage by tilting the operation lever or the operation pedal using the potentiometer as an object to be operated is illustrated. Of course, not only the potentiometer of the embodiment but also various converters can be adopted as the object to be operated.

  In addition to adjusting the electrical signal based on the swing of the operating rod, for example, in an operating rod device that mechanically transmits the swing of the operating rod via a push-pull cable to operate the object to be operated. Needless to say, the present invention can be applied effectively.

  Further, in each of the above-described embodiments, an example in which the present invention is applied to a forklift that is one mode of a work vehicle has been described. However, various work vehicles and industrial vehicles other than a forklift, as well as an operation lever and an operation pedal are shown. Needless to say, the present invention can be effectively applied in a very wide range of fields such as various industrial machines whose operations are controlled by swinging of the operation rod.

1 is an overall external perspective view showing an operation lever device according to one embodiment of the present invention. FIG. The whole top view of the operation lever apparatus shown in FIG. FIG. 2 is an overall side view of the operation lever device shown in FIG. 1. The whole rear view of the operation lever apparatus shown in FIG. The VV sectional view taken on the line in FIG. FIG. 6 is a sectional view taken along line VI-VI in FIG. The whole perspective view which shows the shifter rod of an operation lever apparatus. (a) And (b) is a conceptual diagram which shows the aspect of adjustment in a shifter rod. (a) And (b) is a conceptual diagram which shows the aspect of adjustment in a spring stopper. The conceptual diagram which shows the operation | work process which adjusts the neutral position of an operation lever. The conceptual diagram which shows the operation | work process which adjusts the neutral position of an operation lever. The conceptual diagram which shows the operation | work process which adjusts the neutral position of an operation lever. (a) And (b) is a conceptual diagram which shows the operation | work which adjusts the one side maximum tilt position and the other side maximum tilt position of an operation lever. The conceptual diagram which shows the other Example of an operation lever apparatus. The conceptual diagram which shows the further another Example of an operation lever apparatus. BRIEF DESCRIPTION OF THE DRAWINGS The whole top view which shows the operation pedal apparatus which is one Example of this invention. XVII-XVII sectional view taken on the line in FIG. BRIEF DESCRIPTION OF THE DRAWINGS The whole front view which shows the operation pedal apparatus which is one Example of this invention. XIX-XIX sectional view taken on the line in FIG. (a) And (b) is the whole side view and whole top view which show notionally a general forklift. The side view which shows the conventional operation lever apparatus with which the general forklift was equipped. The front view which shows the conventional operation lever apparatus. XXIII-XXIII sectional view taken on the line in FIG. XXIV-XXIV sectional view taken on the line in FIG.

Explanation of symbols

1 ... Control lever device (control device),
2 ... Operating lever (operating rod),
3 ... The device body,
4 ... Base frame,
5 ... support shaft,
6 ... Potentiometer (workpiece),
10 ... Shifter rod,
11 ... Yoke (spring holder),
12 ... bolt (spring holder),
20: Compression spring,
30 ... Fixed stopper plate (spring stopper),
31 ... Moving stopper plate (spring stopper),
50: Neutral position adjusting means,
100, 200 ... operating pedal device (operating rod device),
102, 202 ... Operation pedal (operation rod).

Claims (1)

Provided with an operating rod that is supported so as to be swingable with respect to the support shaft, can normally occupy the neutral position, and can tilt between the maximum tilt position on one side and the maximum tilt position on the other side across the neutral position. , In an operating rod device that operates an object to be operated by tilting the operating rod,
A shifter rod that is swingably supported by the operating rod and extends along a swing plane of the operating rod;
A compression spring extrapolated to the shifter rod;
A spring holder that is provided on the shifter rod, abuts against both ends of the compression spring, and holds the compression spring in a predetermined position on the shifter rod;
A spring stopper which is provided at a predetermined position apart from the support shaft and which contacts both ends of the compression spring held by the shifter rod;
Neutral position adjusting means for adjusting the neutral position of the operating rod by adjusting at least one of the position of the compression spring on the shifter rod and the position of the spring stopper from the support shaft;
An operating rod device comprising:

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