JP5590717B2 - Operation lever device - Google Patents

Description

  The present invention relates to an operation lever device having an operation lever that can be swung around a base end side.

  For example, in a vehicle such as a rice transplanter or a construction machine, an operation lever device for operating a vehicle or equipment included in the vehicle is usually provided. As a conventional operation lever device, an operation lever which is disposed in a vehicle and can be swung around a base end side, and slides according to a swinging operation direction of the operation lever to form a predetermined electric circuit. Thus, there are some which include a movable member that causes the vehicle or equipment included in the vehicle to perform a predetermined operation, and a return spring that constantly biases the movable member toward the initial position.

  According to such a conventional operation lever device, when the operation lever is operated to swing, a predetermined operation can be performed on the vehicle or the equipment included in the vehicle according to the swing operation direction. Later, the operating lever is naturally returned to the initial position by the urging force of the return spring. In addition, since this prior art does not relate to the literature known invention, there is no prior art document information to be described.

  However, in the above-described conventional operating lever device, when the operating lever is operated to swing, the biasing force of the return spring is applied, so that the operating load increases unilaterally as the operating stroke increases. As a result, there is a problem that the operability is deteriorated. In particular, in an operation lever device installed in a rice transplanter or a construction machine that is frequently used and repeatedly oscillated with respect to the operation lever, the operability is significantly deteriorated.

  The present invention has been made in view of such circumstances, and it is an object of the present invention to provide an operation lever device that can further improve the operability of the operation lever.

According to the first aspect of the present invention, there is provided an operation lever which is disposed in the vehicle and can be swung around the base end side, and a predetermined electric circuit is slid according to the swinging operation direction of the operation lever. In the operation lever device, comprising: a movable member that performs a predetermined operation on the vehicle or the equipment included in the vehicle, and a return spring that constantly biases the movable member toward the initial position. Action load applying means for applying an action load to the movable member as the movable member slides, and a case formed with a groove shape that extends in the operation direction of the operation lever and accommodates the movable member while allowing the movable member to slide with comprises the door, the action load applying means are formed on each of opposed wall surfaces constituting the groove shape of the case, it is extended along the sliding direction of the movable member a And Deployment shape, are respectively arranged on both sides of the movable member, is composed of a slidable action member along said action shape biasing force being applied, by the action load operation stroke of the operation lever It is characterized in that it is set so as to reduce the operation load as it increases.

  According to a second aspect of the present invention, in the operation lever device according to the first aspect, the operation load is increased in the initial operation stroke of the operation lever by the action load by the action load applying means and the urging force by the return spring, and thereafter The operation load is set to decrease as the operation stroke increases.

According to a third aspect of the present invention, in the operation lever device according to the first or second aspect , the action member that slides along the action shape applies an action load in the sliding direction of the movable member. The load is reduced.

According to a fourth aspect of the present invention, in the operation lever device according to any one of the first to third aspects, the groove shape includes a plurality of grooves extending in a direction in which the operation lever can be swung. The movable member is disposed in each of the extended groove shapes so as to be slidable.

According to the first aspect of the invention, since the operation load is set to be reduced by the action load as the operation stroke of the operation lever is increased, the operability of the operation lever can be further improved.
Further, the action load applying means is formed on each of the opposing wall surfaces constituting the groove shape of the case, and is disposed on each of the action shape extending along the sliding direction of the movable member and on both side surfaces of the movable member. Since the action member is configured to be slidable along the action shape while being applied with an urging force, the movable member can be slid more smoothly and stably in accordance with the swinging operation of the operation lever. A good set operation load can be obtained.

  According to the invention of claim 2, the operation load is increased at the initial stage of the operation lever operation stroke by the action load by the action load applying means and the urging force by the return spring, and the operation load is reduced as the operation stroke thereafter increases. Therefore, a large operation load can be applied at the initial stage of the swing operation of the control lever to suppress erroneous operation, and the operability can be improved by reducing the operation load during the subsequent swing operation. .

According to the invention of claim 3 , since the action load is applied to the sliding direction of the movable member by the action member sliding along the action shape to reduce the operation load, the action shape is set to an arbitrary shape. Thus, a desired setting operation load can be obtained.

According to the invention of claim 4 , the groove shape is composed of a plurality of grooves extending in a direction in which the operation lever can be swung, and each of the extended groove shapes has a movable member. Since it is arranged and made slidable, the operation of the operation lever can be performed reliably and smoothly with respect to the vehicle or the equipment included in the vehicle as the operation lever swings. The property can be further improved.

The front view which shows the external appearance of the operation lever apparatus which concerns on embodiment of this invention Side view showing the appearance of the operating lever device Plan view showing the appearance of the operation lever device Bottom view showing the appearance of the operating lever device VV sectional view in FIG. Sectional view taken along line VI-VI in FIG. VII-VII line sectional view in FIG. Sectional drawing which shows the state which rock | fluctuated and operated the operation lever in FIG. Exploded perspective view showing the operation lever device The perspective view which shows the case in the operation lever apparatus The figure which shows the inside of the case in the operation lever apparatus A five-side view showing a movable member in the operation lever device IIIX-IIIX line sectional view in FIG. The figure which shows the state which has arrange | positioned the movable member in the case in the operation lever apparatus The expanded perspective view which shows the movable member in the operation lever apparatus, and the member of the vicinity It is a figure which shows the process in which the movable member in the same operation lever apparatus slides in the groove shape of a case, Comprising: (a) The state in which an operation lever is in an initial position and a movable member is in an initial position, (b) Operation lever Is a schematic diagram showing a state in which the operation lever is in the initial stage of the operation stroke, and (c) a state in which the operation lever is in the operation stroke after the initial stage. The graph which shows the operation load with respect to the operation stroke of the operation lever in the operation lever device

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
The operation lever device according to the present embodiment is disposed in a vehicle such as a rice transplanter, and includes an operation lever 1, a body 4, a case 7, a plate 12, and the like as shown in FIGS. The main body 2, the movable member 8, the return spring 9, an action ball 14 constituting an action member, and an action shape 15 are mainly constituted. The action ball 14 and the action shape 15 constitute an action member of the present invention.

  The operation lever 1 is disposed near the driver's seat of the rice transplanter (vehicle) and can be swung around the base end side. As shown in FIGS. An operation knob 1a that can be gripped and swung is attached, and an operation portion f is attached to the base end side thereof as shown in FIGS. The operation portion f is fixed to the base end of the operation lever 1 with a spring pin or the like, and operates together with the swing operation of the operation lever 1. The operation portion f is spherical to form the swing center of the operation lever 1. It has a bulging part fa that bulges and a tip part fb that can press the movable member 8 in accordance with the swinging operation of the operation lever 1.

  The main body 2 constitutes a casing that allows the operation lever 1 to swing, and is composed of a body 4 and a case 7 made of a resin molded product. The body 4 includes the operation lever 1 and the body 4. A cover 3 that can prevent dust between the inner case 5, an inner case 5 that supports the swollen portion fa of the operation portion f in a swingable manner, and a boot 6 are attached. The case 7 is composed of a cup container-like member that opens downward, and has four movable members 8 and return springs 9 corresponding to the movable members 8 disposed therein. Note that a contact plate 10, a packing 11, and a plate 12 on which a fixed contact 10 a (see FIG. 15) is formed are fixed by bolts B on the opening side of the case 7.

  As shown in FIGS. 10 and 11, the case 7 extends in the operation direction of the operation lever 1 (in this embodiment, four directions, front, rear, left, and right), and has a groove shape 7 a that accommodates the movable member 8 while allowing the movable member 8 to slide. Is formed. The groove shape 7a is formed of a cruciform recess in a plan view surrounded by a wall surface 7aa on both sides, and as shown in FIG. 14, the movable member 8 is fitted and slidable in the extending direction of the groove shape 7a. It is said that.

  Further, an insertion hole 7b through which the operation lever 1 can be inserted is formed at the center of the bottom surface of the case 7, and from the insertion hole 7b in four directions (front and rear, left and right directions in which the operation lever 1 can be swung). A long hole 7ba is extended. As a result, the swinging operation of the operation lever 1 in the front-rear and left-right directions is allowed. Furthermore, a stopper 7c is integrally formed on the inner bottom surface of the case 7, and the four movable members 8 urged by the return spring 9 interfere with the stopper 7c, respectively, and are stopped at the initial position. Has been.

  The movable member 8 slides in accordance with the swinging operation direction of the operation lever 1 to form a predetermined electric circuit, thereby accommodating the vehicle or the equipment that the vehicle has (for example, the rice that the rice transplanter has). Tray or marker vertical movement drive mechanism, etc.), as shown in FIG. 12, it has a movable contact 8a inserted through the accommodation hole h, and a contact end 8b. It is mainly composed of a spring receiving portion 8c, a protruding strip portion 8d extending in the sliding direction of the movable member 8, and an accommodation hole 8e.

  The contact end 8b is an end portion that comes into contact with the operation lever 1 when the operation lever 1 is swung. Thus, when the operating lever 1 is swung, the contact end 8b of the movable member 8 corresponding to the swinging direction of the operating lever 1 is attached to the base end side of the operating lever 1 as shown in FIG. The movable member 8 is pressed against the distal end portion fb of the operation portion f. When the movable member 8 is pressed at the front end portion fb of the operation portion f, the movable member 8 slides in the same direction along the groove shape 7aa against the urging force of the return spring 9, and is movable by the sliding. The contact 8a is in contact with the fixed contact 10a to form a predetermined electric circuit, and the vehicle or the equipment included in the vehicle is configured to perform a predetermined operation. One end of a wiring H (see FIG. 1) is connected to the fixed contact 10a, and the vehicle and the operating lever device are electrically connected via the wiring H.

  The spring receiving portion 8c is a portion for receiving one end of the return spring 9 and supporting the one end. The other end side of the return spring 9 is supported by being in contact with the case 7, so that the movable member 8 can always be urged toward the initial position. That is, after the operating lever 1 is swung and then the operating force is loosened, the movable member 8 and the operating lever 1 naturally return to the initial position by the urging force of the return spring 9.

  The protrusion 8d can be fitted into the long hole 7ba. As a result, when the movable member 8 slides, the protrusion 8d moves along the long hole 7ba, so that the movable member 8 is guided. It is possible. The accommodation hole 8e is composed of recesses formed on both side surfaces of the movable member 8, and each accommodates the coil spring 13 and the action ball 14 (action member).

  On the other hand, each of the opposing wall surfaces 7aa constituting the groove shape 7a of the case 7 is formed with an action shape 15 extending along the sliding direction of the movable member. As shown in FIG. 11, the action shape 15 includes an uneven shape including an initial position recess 15 a, an ascending slope 15 b, a vertex 15 c, and a descending slope 15 d. The action balls 14 are pressed against each other by the urging force of the coil spring 13. As a result, when the movable member 8 slides along the groove shape 7 a in accordance with the swinging operation of the operation lever 1, the action ball 14 slides along the action shape 15 while being urged by the coil spring 13. It is possible.

  Thus, in the process in which the action ball 14 slides along the action shape 15, an action load is applied to the movable member 8 by the action ball 14 and the action shape 15 (action load applying means). . For example, when the action ball 14 slides along the rising slope 15b, an action load is applied to the movable member 8 in a direction opposite to the sliding direction (the same direction as the urging force by the return spring 9). When the action ball 14 slides along the descending slope 15d, an action load is applied to the movable member 8 in the sliding direction (opposite to the urging force by the return spring 9).

  Thereby, in the process in which the action ball 14 slides along the action shape 15, the action ball 14 slides along the descending slope 15 d, so that the urging force of the return spring 9 is offset and the return spring 9 An action load opposite to the urging force can be applied. Accordingly, it is possible to set so that the operation load accompanying the increase in the operation stroke of the operation lever 1 is reduced by the action load by the action load applying means (the action ball 14 and the action shape 15).

  Here, in the present embodiment, the action ball 14 slides along the upward slope 15 b in the initial sliding of the movable member 8. As a result, as shown in FIG. 17, the operation stroke of the operation lever 1 from the action load application means (action ball 14 and action shape 15) and the urging force of the return spring 9 to the initial operation stroke (operation strokes 0 to a). The operation load is set to increase with the increase of the operation stroke thereafter (between operation strokes a and b).

Next, the relationship between the operation stroke when the operation lever 1 is swung and the operation load applied to the operation lever 1 will be described. In FIG. 17, symbol α represents a graph showing the relationship between the operation stroke and the operation load according to the present embodiment, and symbol β represents the operation stroke and the operation load of the conventional one in which only the return spring is provided. The graph which shows the relationship of is shown.
When the operation lever 1 is not swung and the operation lever 1 is in the initial position (neutral position), the movable member 8 is in the stop position (initial position) in contact with the stopper 7c, and FIG. As shown in (a), the pair of action balls 14 are in pressure contact with the initial position recess 15a. In such a state, no action load is applied to the movable member 8.

  When the movable member 8 slides in accordance with the operation direction as the operating lever 1 is swung, the pair of action balls 14 are respectively moved up and down 15b as shown in FIG. 16 (b). It slides while being pressed along. At this time (that is, at the initial stage of the operation stroke), as can be seen from the graph of the operation strokes 0 to a in FIG. 17, the action load by the action load applying means (action ball 14 and action shape 15) and the urging force by the return spring 9. As a result, the operating load is temporarily increased.

  Thereafter, when the operating lever 1 is further swung in the same direction, each of the pair of action balls 14 reaches the apex 15c, and then slides while being pressed along the descending slope 15d as shown in FIG. 16 (c). To do. At this time, as can be seen from the graph of the operation strokes a and b in FIG. 17, the operation load is reduced by the action load by the action load applying means (the action ball 14 and the action shape 15). The operation lever 1 is set to reach the stroke end before reaching the operation stroke b.

  According to the above embodiment, the operation load is set so as to decrease with the increase of the operation stroke of the operation lever 1 by the action load by the action load applying means (the action ball 14 and the action shape 15). The sex can be further improved. In particular, it is effective in an operation lever device installed in a rice transplanter (or similar to a construction machine) in which the operation lever 1 is repeatedly swung with respect to the operation lever 1 with high use frequency.

  In addition, the operation load is increased in the initial operation stroke of the operation lever 1 by the action load by the action load applying means (the action ball 14 and the action shape 15) and the urging force by the return spring 9, and the subsequent operation stroke is increased. Since the operation load is set to be reduced, a large operation load can be applied at the initial stage of the swing operation of the control lever 1 to suppress erroneous operation, and the operability can be improved by reducing the operation load during the subsequent swing operation. Can be improved.

  Furthermore, the action load applying means (action ball 14 and action shape 15) is formed on each of the opposing wall surfaces 7aa constituting the groove shape 7a of the case 7 and extends along the sliding direction of the movable member 8. An action shape 15 provided and action balls 14 (action members) that are arranged on both side surfaces of the movable member 8 and are slidable along the action shape 15 while being urged by the coil spring 13. Accordingly, the movable member 8 can be slid more smoothly and stably with the swinging operation of the operation lever 1, and a favorable set operation load can be obtained.

  Still further, an action load is applied in the sliding direction of the movable member 8 (opposite to the urging force of the return spring 9) by the action ball 14 (action member) sliding on the action shape 15 to reduce the operation load. Therefore, a desired setting operation load can be obtained by setting the action shape 15 to an arbitrary shape. Instead of the action ball 14, another form of action member such as an action pin (pin-like member) that can slide along the action shape 15 while applying a biasing force may be used.

  The groove shape 7a is composed of a plurality of grooves (four grooves in the present embodiment) extending in a direction in which the operation lever 1 can be swung, and each of the extended groove shapes Since the movable members 8 are arranged on the respective 7a to be slidable, the predetermined operation can be surely and smoothly performed with respect to the vehicle or the equipment included in the vehicle as the operation lever 1 is swung. In addition, the operability of the operation lever 1 can be further improved. The groove shape 7a according to the present embodiment is formed in a cross shape in a plan view extending in four directions. However, as long as the groove shape is along a direction in which the operation lever 1 can be swung, The groove shape may extend substantially linearly in the direction.

  Although the present embodiment has been described above, the present invention is not limited to this. For example, the action shape is only a downward slope, and the operation stroke increases from the initial operation stroke of the operation lever 1 to the operation stroke end. You may set so that an operation load may be reduced. Further, in this embodiment, the action members (action balls 14) are respectively disposed on both side surfaces of the movable member 8, but the action members are disposed only on one of the side surfaces, and the grooves The action shape may be formed only on one wall surface (the wall surface facing the action member) of the shape 7a. In addition, in this embodiment, although applied to the rice transplanter, you may make it apply to other vehicles (construction machine etc.) which comprise an operation lever.

Action load applying means for applying an action load to the movable member as the movable member slides, and a case formed with a groove shape that extends in the operation direction of the operation lever and accommodates the movable member while allowing the movable member to slide. The action load applying means is formed on each of the opposing wall surfaces constituting the groove shape of the case, and extends on the sliding direction of the movable member, and on both side surfaces of the movable member. An action member that is arranged and configured to be slidable along the action shape while applying an urging force, and is configured to reduce the operation load as the operation stroke of the operation lever increases due to the action load. As long as it is a lever device, it can be applied to a device having a different external shape or a device to which another function is added.

DESCRIPTION OF SYMBOLS 1 Operation lever 2 Main body 3 Cover 4 Body 5 Inner case 6 Boot 7 Case 8 Movable member 9 Return spring 10 Contact plate 11 Packing 12 Plate 13 Coil spring 14 Action ball (action member: action load application means)
15 Action shape (action load applying means)

Claims (4)

An operation lever disposed on the vehicle and swingable about a base end side;
A movable member that slides in accordance with the swinging operation direction of the operation lever to form a predetermined electric circuit, thereby causing the vehicle or equipment included in the vehicle to perform a predetermined operation;
A return spring that constantly biases the movable member toward the initial position;
In the operating lever device with
Action load applying means for applying an action load to the movable member as the movable member slides ;
A case formed with a groove shape that extends in the operation direction of the operation lever and accommodates the movable member while being slidable;
And the action load applying means includes:
An action shape formed on each of the opposing wall surfaces constituting the groove shape of the case and extending along the sliding direction of the movable member;
An action member that is disposed on each side surface of the movable member, and is slidable along the action shape while applying a biasing force;
In the configuration, the operation lever device, characterized in that which is set so as to reduce the operation load with an increase in the operation stroke of the operation lever by the action load.   The action load by the action load applying means and the biasing force by the return spring are set to increase the operation load at the initial stage of the operation lever operation stroke and to decrease the operation load as the operation stroke increases thereafter. The operating lever device according to claim 1. 3. The operation lever device according to claim 1, wherein an action load is applied in the sliding direction of the movable member to reduce the operation load by an action member that slides along the action shape. The groove shape includes a plurality of grooves extending in a direction in which the operation lever can be swung, and the movable member is provided in each of the extended groove shapes to slide. The operation lever device according to any one of claims 1 to 3, wherein the operation lever device is enabled .

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