JP2014012463A - Handle device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a handle device capable of detecting accurately operating numbers of an operating member using a potentiometer while exerting combination in high efficiency.SOLUTION: A handle device comprises: a frame 1; a rotating shaft 3; an operating member 5; a moving member 7; first and second guide rods 9a and 9b; a rocking member 11; and a potentiometer 13. On the moving member 7 are formed first and second guide walls 7i and 7j, and between the walls is formed a recess 7k. On one end of the moving member 11 is formed a pin hole 7a, and on the other end is formed a salient 7b with an action surface 110. A salient 11b is inserted into the recess 7k. In the handle device, as the moving member 7 moves up and down, the action surface 110 fluctuates with a lower surface of the first guide wall 7i and an upper surface of the second guide wall 7j. Thereby the salient 11b is guided to the lower surface 712 of the first guide wall 7i and the upper surface 713 of the second guide wall 7j and moved in the recess 7k.

Description

  The present invention relates to a handle device.

  Patent Document 1 discloses a conventional handle device. The handle device includes a frame, a rotation shaft, an operation member, a moving member, a guide member, a potentiometer, and a swing member.

  The frame has a pair of support portions, and both the support portions are formed to face each other with a working space therebetween. The rotating shaft is rotatably supported by both support portions, and a male screw is formed on the outer peripheral surface in the working space. The operation member is operated by the user and can rotate the rotation shaft.

  The moving member has a female screw aligned with the male screw of the rotating shaft, and is screwed to the rotating shaft in the working space. A pair of pins that fit into the thread groove of the male screw of the rotating shaft are fixed to the moving member. The guide member is provided on the frame, and allows movement of the moving member in the axial direction within the working space while prohibiting rotation of the moving member accompanying rotation of the rotating shaft. This guide member is made of a pair of plate members fixed to the frame and capable of guiding both pins of the moving member in the axial direction.

  The potentiometer is fixed to the frame and can detect the amount of movement of the moving member. The potentiometer includes a case fixed to the frame and a detection unit that can rotate around a rotation axis with respect to the case. The swing member is provided between the moving member and the potentiometer, and transmits the amount of movement of the moving member to the potentiometer as its own swing angle. In this handle device, one end side of the swing member is fixed to the detecting portion of the potentiometer, and the other end side sandwiches one pin in the axial direction.

  In this handle device, the rotation shaft rotates when the user operates the operation member. Thereby, a moving member moves to the axial direction of a rotating shaft. Along with the movement of the moving member, the swinging member swings on the one end side fixed to the detection portion of the potentiometer and the other end side swings. Since the swing angle of the swing member becomes the rotation amount of the detection unit, the potentiometer can detect the operation amount of the operation member.

JP 2006-224815 A

  However, in the conventional handle device described above, the pin is fixed to the moving member, and the swinging member holds the pin in the axial direction, so that the position of the potentiometer case fixed to the frame is the radial direction of the rotating shaft If there is a variation, the contact position between the swinging member and the pin is displaced in the radial direction of the rotation shaft, and the length from the detection unit to the contact position has a variation. In this case, the swinging angle of the swinging member with respect to a certain amount of movement of the moving member varies, the amount of rotation of the detection unit also varies, and the operation amount of the operating member cannot be accurately detected by the potentiometer. In order to avoid this, the conventional handle device has to be assembled with high accuracy, and the assembly efficiency is lowered.

  The present invention has been made in view of the above-described conventional situation, and solves the problem of providing a handle device capable of accurately detecting the operation amount of an operation member by a potentiometer while exhibiting high assembly efficiency. It is an issue that should be done.

The handle device of the present invention includes a frame formed such that a pair of support portions face each other across an operation space;
A rotating shaft that is rotatably supported by both of the support portions and has an external thread formed on an outer peripheral surface in the working space;
An operation member operated by a user and capable of rotating the rotation shaft;
A moving member having a female screw aligned with the male screw and screwed into the rotating shaft in the working space;
A guide member that is provided on the frame and that allows the moving member to move in the axial direction within the working space while prohibiting the rotation of the moving member along with the rotation of the rotating shaft;
A potentiometer fixed to the frame and capable of detecting the amount of movement of the moving member;
In a handle device provided with a swinging member provided between the moving member and the potentiometer and transmitting the amount of movement of the moving member to the potentiometer as its swinging angle.
The potentiometer includes a case fixed to the frame, and a detection unit that can rotate around a rotation axis with respect to the case.
One end side of the rocking member is coupled to the detection unit, and an action surface is formed on the other end side,
The moving member is formed with a guide portion that slidably guides the working surface within the swing angle (claim 1).

  In the handle device of the present invention, the action surface is formed on the swing member, and the length from the detection unit to the action surface is constant. And the guide part of a moving member guides an action surface so that sliding is possible within the rocking angle of a rocking member. For this reason, even if the position of the potentiometer case fixed to the frame varies in the radial direction of the rotating shaft, and the contact position between the working surface and the guide portion is shifted in the radial direction of the rotating shaft, it acts from the detecting unit. There is no variation in the length to the surface. For this reason, the swinging angle of the swinging member with respect to a certain amount of movement of the moving member is constant, and the rotation amount of the detection unit is also constant, so that the operation amount of the operation member can be accurately detected by the potentiometer. is there. For this reason, it is not necessary to increase the assembly accuracy, and the assembly efficiency is improved.

  Therefore, the handle device of the present invention can accurately detect the operation amount of the operation member by the potentiometer while exhibiting high assembly efficiency.

  In the handle device of the present invention, the potentiometer may include a biasing spring that biases the detection unit in one direction around the rotation axis. And it is preferable that a guide part has a 1st guide surface which contact | abuts an action surface with an urging | biasing spring, and a 2nd guide surface which faces a 1st guide surface (Claim 2).

  When the potentiometer has such a biasing spring for biasing, the potentiometer can accurately detect the operation amount of the operating member as long as the guide portion has only the first guide surface. Further, if the guide portion also has the second guide surface, it is possible to guide the working surface even if the urging spring cracks or the like.

  Moreover, it is preferable that the guide part is integrally formed with the moving member. In this case, the number of parts can be reduced, and the production efficiency of the handle device can be further increased.

  The handle device according to the present invention is preferably for steering an industrial vehicle (claim 4). Thereby, in this industrial vehicle, it becomes possible to perform steering operation correctly.

  While the handle device of the present invention can exhibit high assembly efficiency, the operation amount of the operation member can be accurately detected by a potentiometer.

It is a fragmentary sectional view which shows the left side surface of the handle apparatus of an Example. FIG. 2 is an enlarged sectional view taken along the line II-II in FIG. 1 according to the handle device of the embodiment. It is a fragmentary sectional view of the handle device of an example. It is an enlarged view which shows the moving member concerning the handle | steering-wheel apparatus of an Example. (A) has shown the top view of the moving member, (B) has shown the front view of the moving member. It is an enlarged side view which shows the rocking | fluctuation member in connection with the handle apparatus of an Example. FIG. 6 is a schematic enlarged view showing the swinging of the swinging member when the moving member moves upward in the working space according to the handle device of the embodiment. FIG. 6 is a schematic enlarged view showing the swing of the swing member when the moving member moves downward in the working space in the handle device of the embodiment.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings.

(Example)
As shown in FIG. 1, the handle device of the embodiment includes a frame 1, a rotating shaft 3, an operation member 5, a moving member 7, first and second guide rods 9 a and 9 b, a swing member 11, and a potentiometer 13. . The first and second guide rods 9a and 9b respectively correspond to guide members (see FIG. 2 for the second guide rod 9b). A transmission device 29 is connected to the potentiometer 13. This handle device is employed as a steering device for a picking lift (not shown) that is an industrial vehicle.

  As shown in FIG. 3, the frame 1 includes a first support portion 15 and a second support portion 17 that are provided horizontally, and a connecting rod 19 that extends vertically. The first support portion 15 is formed with bolt holes 15c and 15d in addition to the first insertion hole 15a and the second insertion hole 15b. On the other hand, the second support portion 17 is formed with a first insertion hole 17a and a second insertion hole 17b. Although not shown, the first and second support portions 15 and 17 are formed with insertion holes for inserting the first and second guide rods 9a and 9b, respectively. Further, in FIG. 3, the operation member 5, the potentiometer 13, and the like are not shown.

  A bearing 21 a is provided in the first insertion hole 15 a of the first support portion 15. In addition, the first insertion hole 17a of the second support portion 17 is provided with a bearing 21b and a sealing material 21c.

  The upper end side of the connecting rod 19 is inserted into the second insertion hole 15 b of the first support portion 15, and the lower end side of the connecting rod 19 is inserted into the second insertion hole 15 b of the second support portion 17. Both ends of the connecting rod 17 are fixed to the first and second support portions 15 and 17 by nuts 23a and 23b, respectively. Thereby, the 1st support part 15 and the 2nd support part 17 are arrange | positioned up and down across a fixed space, and are in the state which mutually faces. A space formed between the first support portion 15 and the second support portion 17 is a working space 25.

  The rotating shaft 3 has an upper end inserted through the bearing 21a and a lower end inserted through the bearing 21b and the sealing material 21c. Thereby, the rotating shaft 3 is rotatably supported by the first and second support portions 15 and 17. Further, a male screw 3 a is formed at a location on the outer peripheral surface of the rotating shaft 3 and located in the working space 25. A part of each end of the male screw 3a is processed into a flat shape, and pin holes 3b and 3c extending in a direction orthogonal to the axis O of the rotating shaft 3 are formed in these parts.

  A first spring pin 37a is press-fitted into the pin hole 3b, and a second spring pin 37b is press-fitted into the pin hole 3c. The first spring pin 37a is positioned on the upper end side of the rotating shaft 3 in the working space 25 with a certain distance from the bearing 21a. Further, the second spring pin 37b is located on the lower end side of the rotating shaft 3 in the working space 25 with a certain space between the second spring pin 37b and the bearing 21b. The distance α between the first spring pin 37a and the second spring pin 37b in the axial direction of the rotary shaft 3 allows the potentiometer 13 to detect the swing angle of the swing member 11 when the swing member 11 described later swings. Is set to be equal to a certain range.

  Further, the upper end side of the rotating shaft 3 protruding from the first support portion 15 is tapered so as to taper toward the tip. As shown in FIG. 1, a connecting portion 3 d that is connected to an arm 51 of the operation member 5 described later is formed on the upper end side of the rotating shaft 3. This connecting portion 3d is knurled. Further, the tip 3e on the upper end side of the rotating shaft 3 is formed with a smaller diameter than the connecting portion 3d and can be screwed into a nut 23c described later.

  The operation member 5 includes an arm 51, a wheel 52, and a knob 53. The arm 51 is formed with a boss portion 510 that extends downward in the center, and a connection shaft 511 that extends upward at the end in the width direction. Insertion holes 510 a and 510 b and a shaft hole 510 c are formed in the boss portion 510. The insertion holes 510a and 510b communicate with each other through a shaft hole 510c. The connecting portion 3d of the rotating shaft 3 is fitted into the insertion hole 510a, and the tip 3e of the rotating shaft 3 is inserted into the shaft hole 510c. The tip 3e protrudes into the insertion hole 510b and is fixed by a nut 23c in the insertion hole 510b. Thereby, the arm 51 and the rotating shaft 3 are connected via the boss portion 510.

  The wheel 52 is formed in a disk shape and is disposed above the arm 51. A connection protrusion 520 for connecting to the knob 53 is formed on the periphery of the wheel 52. A holding surface 521 that holds the arm 51 is formed on the lower surface of the wheel 52. An insertion hole 522 extending into the connection protrusion 521 is formed in the holding surface 521. In this wheel 52, by holding the arm 51 with the holding surface 521, the connection shaft 511 of the arm 51 is inserted into the insertion hole 522, and the tip of the connection shaft 511 protrudes from the connection protrusion 520.

  Insertion holes 530 and 531 and a shaft hole 532 are formed in the knob 53. The insertion holes 530 and 531 communicate with each other through the shaft hole 532. A connection protrusion 520 is inserted through the insertion hole 530. A connection shaft 511 is inserted into the shaft hole 532, and the tip of the connection shaft 511 protrudes into the insertion hole 531. In the insertion hole 531, the tip of the connection shaft 511 is fixed to the knob 53 by a nut 21d. Thus, in the operation member 5, when the user rotates the wheel 52 via the knob 53, the rotation is transmitted to the rotary shaft 3 by the arm 51.

  As shown in FIGS. 4A and 4B, the moving member 7 is a substantially rectangular body, and an upper surface 700, a lower surface 701, a front end surface 702, a rear end surface 703, a right end surface 704, and a left end surface 705 are formed. Yes. An insertion hole 7 a extending to the lower surface 701 is formed at the center of the upper surface 700 of the moving member 7. In the insertion hole 7a, an internal thread 7b that is aligned with the external thread 3a of the rotary shaft 3 is formed. By inserting the rotary shaft 3 through the insertion hole 7a, the moving member 7 is screwed into the rotary shaft 3 in the working space 25 as shown in FIG. Thus, the moving member 7 can move up and down in the working space 25 in the axial direction of the rotating shaft 3 while being screwed with the rotating shaft 3 as the rotating shaft 3 rotates.

  As shown in FIG. 4A, the upper surface 700 of the moving member 7 is formed with an upper surface side guide 7c surrounding the insertion hole 7a around the insertion hole 7a. The upper surface side guide 7c has a shape extending from the left rear side of the upper surface 700 to the insertion hole 7a while descending spirally. The apex side of the upper surface side guide 7c protrudes upward from the upper surface 700. The apex side of the upper surface side guide 7c faces the front side of the moving member 7 and extends perpendicularly to the upper surface 700. A stopper surface 7d is formed.

  Similarly, a lower surface side guide 7e is formed around the insertion hole 7a in the lower surface 701, with the right rear side of the lower surface 701 as the apex and extending spirally up to the insertion hole 7a. The apex side of the lower surface side guide 7e protrudes downward from the lower surface 701. The apex side of the lower surface side guide 7e faces the front side of the moving member 7 and extends perpendicularly to the lower surface 701. A stopper surface 7f is formed.

  Sliding surfaces 7g and 7h are recessed in a semicircular shape at the center in the front-rear direction of the moving member 7 on the right end surface 704 and the left end surface 705 of the moving member 7, respectively.

  Furthermore, as shown to (B) of the same figure, the front end surface 702 of the moving member 7 has the 1st guide wall 7i and the 2nd guide wall 7j which protrude in parallel horizontally from the front end surface 702 toward the front. Is formed. These first and second guide walls 7i and 7j correspond to the guide portion in the present invention. The first and second guide walls 7i and 7j are formed in a rectangular shape, and slidable contact surfaces 710 and 711 extending in the left-right direction of the moving member 7, that is, in the direction orthogonal to the axial direction of the rotating shaft 3, are formed at the front end portions. Is formed. Each slidable contact surface 710, 711 is formed in a planar shape, and can be slidably contacted with the other end side of the swing member 11 described later.

  As shown in FIG. 3, the first guide wall 7i and the second guide wall 7j are arranged so that the lower surface 712 of the first guide wall 7i and the upper surface 713 of the second guide wall 7j face each other. The lower surface 712 of the first guide wall 7 i and the upper surface 713 of the second guide wall 7 j extend horizontally in a direction orthogonal to the axial direction of the rotating shaft 3. A recess 7k is formed between the first guide wall 7i and the second guide wall 7j, that is, between the lower surface 712 of the first guide wall 7i and the upper surface 713 of the second guide wall 7j. The upper surface 713 of the second guide wall 7j corresponds to the first guide surface in the present invention, and the lower surface 712 of the first guide wall 7i corresponds to the second guide surface in the present invention.

  As shown in FIG. 1, the first guide rod 9 a is inserted through the first support portion 15 and the second support portion 17 in the same manner as the connecting rod 19, and the first support portion 15 and the second support rod 17 are inserted by nuts 23 e and 23 f. It is fixed to the support part 17. Similarly to the first guide rod 9a, the second guide rod 9b shown in FIG. 2 is also fixed to the first support portion 15 and the second support portion 17 via nuts (not shown). Thus, the guide rods 9a and 9b are fixed to the frame 1 in a state of facing each other while sandwiching the rotation shaft 3 in the left-right direction. Further, as shown in FIG. 2, the first guide rod 9a is in contact with the sliding surface 7h of the moving member 7, and the second guide rod 9b is in contact with the sliding surface 7g. ing. Accordingly, the first and second guide rods 9a and 9b prohibit the moving member 7 from rotating together with the rotating shaft 3 when the moving member 7 moves up and down in the working space 25 as the rotating shaft 3 rotates. To do.

  As shown in FIG. 5, the swing member 11 is formed in a plate shape extending from one end to the other end. A pin hole 11 a is formed on one end side of the swing member 11, and a columnar convex portion 11 b is formed integrally with the swing member 11 on the other end side of the swing member 11. The outer peripheral surface of the convex portion 11a is a working surface 110. Further, in this swing member 11, the distance β is set from the center of the pin hole 11a to the center of the convex portion 11b.

  As shown in FIG. 1, the protrusion 11 b is inserted into the recess 7 k of the moving member 7, so that the swinging member 11 is swingably connected to the moving member 7 on the other end side. . Further, the other end side of the swing member 11 is in contact with the sliding contact surfaces 710 and 711.

  On the other hand, one end side of the moving member 11 is coupled to the rear end side of the transmission device 29 by a fixing pin 27 inserted through the pin hole 11a. Thereby, the moving member 11 is arrange | positioned between the moving member 7, the transmission apparatus 29, and the potentiometer 13 (refer FIG. 2).

  The transmission device 29 is connected to the potentiometer 13 on the front end side in addition to being connected to the other end side of the moving member 11 on the rear end side. The transmission device 29 is provided with a shaft (not shown) and the like inside, and can transmit the swing angle on one end side of the swing member 11 to the potentiometer 13. As shown in FIG. 1, the transmission device 29 is fixed to the bracket 33 by bolts 31a and 31b. The bracket 33 is fixed to the first support portion 15 by bolts 31c and 31d. The bolts 31c and 31d are inserted through the bolt holes 15c and 15d shown in FIG.

  As shown in FIG. 1, the potentiometer 13 includes a case 13 a, a detection unit 13 b provided to be rotatable around the rotation axis P with respect to the case 13 a, and a detection unit 13 b around the rotation axis P. It has a biasing spring (not shown) that biases downward. In the potentiometer 13, the detection unit 13 b rotates around the rotation axis P according to the swing angle on one end side of the swing member 11 transmitted by the transmission device 29. The pivot axis P is located coaxially with the center of the pin hole 11 a of the swing member 11. The potentiometer 13 can detect the swing angle of the swing member 11 accompanying the movement of the moving member 7 based on the rotation direction and the rotation amount of the detection unit 13b.

  Further, due to the urging force of the urging spring, the convex portion 11b of the swinging member 11, that is, the action surface 110 is pressed against the upper surface 713 of the second guide wall 7j in the concave portion 7k. Yes.

  A female connector 13c is provided below the case 13a. One end of a male connector 35 having a cable 35a is connected to the female connector 13c. The other end of the male connector 35 is connected to a picking lift control device (not shown). As a result, the potentiometer 13 and the control device are electrically connected, and the detected swing angle of the swing member 11 can be transmitted to the control device as an electrical signal.

  In this handle device, as shown in FIG. 1, when the user rotates the operation member 5 clockwise with the knob 53, the rotation shaft 3 rotates clockwise. At this time, the first and second spring pins 37 a and 37 b also rotate with the rotary shaft 3. In the moving member 7, the sliding surfaces 7g and 7h are in sliding contact with the first and second guide rods 9a and 9b. Therefore, when the rotation shaft 3 rotates to the right, the moving member 7 moves upward in the working space 25 in the axial direction of the rotation shaft 3 as shown in FIG. As the moving member 7 moves upward as described above, in the swinging member 11, one end side coupled to the transmission device 29 by the fixing pin 27, that is, the position of the pin hole 11a serves as a fulcrum, and the other end side is one end. It swings so as to be located above the side. At this time, the swing angle on the other end side with respect to the one end side of the moving member 11 increases in accordance with the operation amount of the moving member 7 moving upward in the operating space 25. Further, as the moving member continues to move upward in the working space 25, the first spring pin 37a and the first stopper surface 7d come into contact with each other. Thereby, in this handle device, it becomes impossible to rotate the operation member 5 clockwise.

  On the other hand, when the user rotates the operation member 5 counterclockwise, the rotary shaft 3 rotates counterclockwise. Accordingly, as shown in FIG. 7, the moving member 7 has the sliding surfaces 7 g and 7 h slidably contact the guide rods 9 a and 9 b, respectively, and moves downward in the working space 25 in the axial direction of the rotary shaft 3. Moving. As the moving member 7 moves downward, the swinging member 11 swings with the position of the pin hole 11a as a fulcrum so that the other end side is positioned below the one end side. At this time, the swing angle on the other end side with respect to the one end side of the moving member 11 also increases corresponding to the operating amount of the moving member 7 that moves downward in the operating space 25. Further, as the moving member continues to move downward in the working space 25, the second spring pin 37b and the second stopper surface 7f come into contact with each other. Thereby, in this handle device, it becomes impossible to rotate the operation member 5 counterclockwise. 6 and 7, the illustration of the transmission device 29 and the like is omitted for the sake of explanation.

  The swing of the swing member 11 is transmitted to the detection unit 13 b of the potentiometer 13 through the transmission device 29. And the rocking | fluctuation angle of the transfer rocking | fluctuation member 11 is detected because the detection part 13b rotates around the rotating shaft center P as mentioned above. In this handle device, the first spring pin 37a is positioned at an upper limit at which the detecting portion 13b can detect the swing angle when the moving member 11 swings so that the other end side is positioned above the one end side. And the first stopper surface 7d abut. Similarly, when the other end side of the moving member 11 is swung so that it is positioned below the one end side, the second spring pin 37b and the second spring pin 37b 2 The stopper surface 7f comes into contact.

  By transmitting the swing angle of the moving member 11 detected by the detection unit 13b to the control device, in this handle device, picking is performed according to the amount of rotation of the operation member 5 clockwise or counterclockwise by the user. The lift can be turned right or left.

  In this handle device, a pin hole 11 a is formed on one end side of the swing member 11, and a convex portion 11 b having an action surface 110 is integrally formed on the other end side of the swing member 11. In the swing member 11, the distance β from the center of the pin hole 11a to the center of the convex portion 11b is set constant. Thereby, in this handle apparatus, the length from the detection part 11b to the action surface 110 is constant. Further, in this handle device, the lower surface 712 of the first guide wall 7i and the upper surface 713 of the second guide wall 7j of the moving member 7 guide the operating surface 110 slidably within the swing angle of the swing member 7. . More specifically, as the moving member 7 moves up and down in the working space 25, the other end side of the swinging member 11 swings, so that the convex portion 11b moves in the left-right direction within the concave portion. At this time, the lower surface 712 of the first guide wall 7i and the upper surface 713 of the second guide wall 7j guide the movement of the convex portion 11b by sliding with the working surface 110 in the concave portion 7k. Further, the other end side of the swinging member 11 is guided by the sliding contact surfaces 710 and 711 while sliding on the sliding contact surfaces 710 and 711 of the first and second guide walls 7i and 7j.

  Therefore, in this handle device, the position of the case 13a of the potentiometer 13 with respect to the frame 1 varies in the radial direction of the rotating shaft 3 due to, for example, an attachment error of the bracket 33 with respect to the frame 1, and the working surface 110 and the first Even if the contact position between the lower surface 712 of the first guide wall 7i and the upper surface 713 of the second guide wall 7j is shifted in the radial direction of the rotating shaft 3, the length from the detection unit 13b to the working surface 110 does not vary. For this reason, in this handle device, the swing angle of the swing member 11 with respect to a fixed amount of movement of the moving member 7 is constant. And since the detection part 11b rotates according to the rocking | fluctuation angle when the other end side rocks | fluctuates up and down at the position of the distance (beta) from the center of the pin hole 11a, the rotation amount of the detection part 11b is also constant. Thus, in this handle device, the operation amount of the operation member 5 can be accurately detected by the potentiometer 13. For this reason, in the picking lift employing this handle device, the steering operation can be performed accurately.

  Furthermore, in this handle device, when the other end side of the swing member 11 is connected to the moving member 7, it is not necessary to connect it via a pin or the like, and it is sufficient to insert the convex portion 11b into the concave portion 7k. Here, the first and second guide walls 7 i and 7 j forming the recess 7 k are formed integrally with the moving member 7. For this reason, in this handle device, it is not necessary to increase the assembling accuracy, and further, the assembling efficiency is increased because the number of parts is reduced and the assembling is facilitated.

  Therefore, the handle device of the embodiment can accurately detect the operation amount of the operation member 5 by the potentiometer 13 while exhibiting high assembly efficiency.

  In particular, in this handle device, the potentiometer 13 has a biasing spring that biases the detection unit 13b downward around the rotation axis P. For this reason, in this handle device, as described above, the operation surface 110 is maintained in a state of being pressed against the upper surface 713 of the second guide wall 7j in the recess 7k. Therefore, in this handle device, as shown in FIG. 6, when the moving member 7 moves upward in the working space 25, the convex portion 11b is urged by the upper surface 713 of the second guide wall 7j. By pushing up against the urging force, the working surface 110 can slide with the upper surface 713 of the second guide wall 7j. Thereby, the convex part 11b is guided as mentioned above within the concave part 7k. On the other hand, as shown in FIG. 7, when the moving member 7 moves downward in the working space 25, the convex portion 11b is pushed down by the biasing force of the biasing spring. It becomes possible to slide on the upper surface 713 of the wall 7j, and the convex portion 11b is also guided. Thus, in this handle device, it is also possible to guide the convex portion 7b only by the upper surface 713 of the second guide wall 7j.

  Here, the handle device has a first guide wall 7i in addition to the second guide wall 7j. As a result, even if the urging spring is cracked and the urging force is not generated as described above, the handle device can be used when the moving member 7 moves downward in the working space 25. Since the lower surface 712 of the first guide wall 7i acts so as to push down the convex portion 11b, the guide surface 110 can slide with the lower surface 712 of the first guide wall 7i, and the guide surface 110 in the concave portion 7k. Can be guided. That is, since the potentiometer 13 includes the biasing spring and the first guide wall 7i, in the handle device, when the moving member 7 moves downward in the working space 25, the first The lower surface 712 of the guide wall 7i acts to push down the convex portion 11b, and the convex portion 11b is also pushed down by the biasing force of the biasing spring. For this reason, when the moving member 7 moves downward in the working space 25, the action surface 110 slides on the upper surface 713 of the second guide wall 7j and the lower surface 712 of the first guide wall 7i. As a result, the convex portion 11b is guided in the concave portion 7k. Thus, in this handle device, the operation amount of the operating member 5 can be accurately detected by the potentiometer 13 over a long period of time.

  While the present invention has been described with reference to the embodiments, it is needless to say that the present invention is not limited to the above-described embodiments and can be appropriately modified and applied without departing from the spirit thereof.

  For example, the frame 1 is not limited to the above-described configuration, and various types may be used as long as the pair of support portions face each other with the working space 25 interposed therebetween and the rotary shaft 3 can be rotatably supported. A configuration can be employed. Similarly, the operation member 5 is not limited to the above configuration, and various configurations can be adopted as long as the rotary shaft 3 can be rotated by being operated by the user.

  Moreover, you may urge the detection part 13b toward the upward direction around the rotating shaft center P about an urging | biasing spring.

  The present invention can be used for a handle device of an industrial vehicle or the like.

DESCRIPTION OF SYMBOLS 1 ... Frame 3 ... Rotating shaft 3a ... Male screw 5 ... Operation member 7 ... Moving member 7i ... 1st guide wall (guide part)
7j ... Second guide wall (guide section)
7b ... Female screw 9a ... First guide rod (guide member)
9b ... 2nd guide rod (guide member)
DESCRIPTION OF SYMBOLS 11 ... Swing member 13 ... Potentiometer 13a ... Case 13b ... Detection part 15 ... 1st support part (support part)
17 ... 2nd support part (support part)
25 ... Working space 110 ... Working surface 712 ... Lower surface (second guide surface)
713 ... Upper surface (first guide surface)
P ... Rotation axis

Claims (4)

A frame formed so that the pair of support portions face each other across the working space;
A rotating shaft that is rotatably supported by both of the support portions and has an external thread formed on an outer peripheral surface in the working space;
An operation member operated by a user and capable of rotating the rotation shaft;
A moving member having a female screw aligned with the male screw and screwed into the rotating shaft in the working space;
A guide member that is provided on the frame and that allows the moving member to move in the axial direction within the working space while prohibiting the rotation of the moving member along with the rotation of the rotating shaft;
A potentiometer fixed to the frame and capable of detecting the amount of movement of the moving member;
In a handle device provided with a swinging member provided between the moving member and the potentiometer and transmitting the amount of movement of the moving member to the potentiometer as its swinging angle.
The potentiometer includes a case fixed to the frame, and a detection unit that can rotate around a rotation axis with respect to the case.
One end side of the rocking member is coupled to the detection unit, and an action surface is formed on the other end side,
A handle device characterized in that the moving member is formed with a guide portion for slidably guiding the working surface within the swing angle. The potentiometer has a biasing spring that biases the detection unit in one direction around the rotation axis,
2. The handle device according to claim 1, wherein the guide portion includes a first guide surface that abuts the action surface by the biasing spring, and a second guide surface that faces the first guide surface.   The handle device according to claim 1, wherein the guide portion is formed integrally with the moving member.   The handle device according to any one of claims 1 to 3, wherein the handle device is used for steering an industrial vehicle.

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