JP6441414B1 - Remote control cable device - Google Patents

Abstract

[PROBLEMS] To secure a manufacturing space for processing an end of an inner cable in the final process of manufacturing a control cable when a remote control by a control cable is performed with a grip lever device and the exposed size of the inner cable on the operated side is short. It is not possible to manufacture it.
The mounting position of the grip lever device with the inner end of the control cable is extended while being held along the longitudinal direction of the lever, and the required inner cable exposed dimensions (total of the operated side and the grip lever side) In addition, a means serving as an action point at the time of the lever turning operation is provided in the middle of the extending portion to ensure the stroke amount of the inner rope.
[Selection] Figure 1

Description

A remote control device consisting of a grip lever device and a control cable, which is used in moving equipment or stationary equipment for running and walking.

  Conventionally, in a traveling vehicle such as a motorcycle or a bicycle, a grip lever device that does not release a hand from a steering handle is used for remote control during traveling for safety.

In addition, a steering handle is also used in a walking agricultural machine such as a cultivator or a management machine. For safety, it is desirable to perform a necessary remote operation while walking with a grip lever device.

In addition, the grip lever device and the control cable are used from the viewpoint of safety or cost even in fixed equipment such as gate locking mechanisms and window opening / closing mechanisms for infant and nursing moving equipment and residential equipment other than the above. A remote control device is conceivable.

For such various remote control devices, the inboard exposure dimensions (definition will be described later) from the conduit of the control cable differ depending on the operated device.

Patent Document 1 discloses a remote control device for releasing or fixing a handle vertical rotation prevention member by operating a grip lever as a handle vertical position adjusting device for a walking-type mobile agricultural machine.

The remote control device described in this document uses a conventional grip lever device (FIGS. 5 and 5), but the specific connection structure between the vertical rotation blocking member and the control cable inner cable end is clearly described. Absent.

If the return spring is externally attached to the control cable, the number of parts as a whole of the remote control device increases or the assembling workability deteriorates.

On the other hand, if the return spring is built into the control cable, the exposed inward dimension on the operated side will be almost zero, which makes it difficult to manufacture the control cable when using a conventional grip lever. Later).

Patent Document 2 discloses a grip lever structure in which the inner cable exposed dimension of a control cable on the grip lever side is longer than that of a conventional grip lever device.

However, with this lever structure, even if the operating force can be reduced, it is difficult to secure the necessary inward stroke, which is not suitable for general use.

Japanese Utility Model Publication No. 3-51690 JP 2008-212077 A

In recent years, remote operation of devices on the operated side has been progressing in terms of weight reduction and space efficiency, and there is a tendency that the inboard exposure size on the operated side is extremely limited. In addition, it is desirable to adopt a grip lever device for the operation lever from the viewpoint of safety.

In the case of the conventional grip lever device, the exposed size of the inner cable to the grip lever device side of the control cable is about 10 mm at most, and if the exposed cable size on the operated side is extremely limited, manufacture of the control cable There is a problem that it is not possible to secure a space for performing caulking work by a small press in the final process and casting work such as a tyco end. There is only a method of forcibly compressing the return spring to secure a working space, or by manually assembling the return spring while twisting after the above-described caulking operation or casting operation, and work efficiency is greatly reduced.

  In order to facilitate the work in the final production process of the control cable, when the above-mentioned inline exposure dimension is made large (for example, about 30 to 50 mm), the inline exposure dimension on the operated side is limited. In such a case, an excess of the inner cable exposure size is generated on the grip lever device side.

  Although it is possible to change the attachment part with the control cable of the grip lever device and simply extend it to the lever grip part, there is a contradiction that restricts the inward stroke.

  Provided is a grip lever device that can increase the exposed inward dimension on the operation lever side even when the exposed inner line exposed dimension of the control cable is limited. Without compromising the productivity of the control cable, while ensuring the functionality and operability of the grip lever device, the reliability as a remote control device is achieved.

For this reason, as a first invention, a reciprocating motion of the inner wire is constructed by forming a conduit composed of a flexible helical tube and the like, and an inner wire composed of a steel stranded wire or the like slidably inserted into the conduit. used far隔操operation by the exposure dimension of said cord from said conduit a control cable is 30mm or more,
A grip lever device for remote operation is provided on one end side, and a connection end to the operated side is provided on the other end side, and the exposed dimension on the one end side is set to 30 mm to 100 mm when attached to the grip lever device. With
The grip lever device includes a fixed support portion fixed to the handle, and a rotation lever rotatably supported by the fixed support portion.
The inner cable exposed on the one end side is first stretched and supported along a guide groove having an action point on one longitudinal side (rotating lever gripping pressing surface) of the rotating lever, and then the other surface (the one surface side). A remote control device for an agricultural machine, characterized in that an extending portion is provided which is led to a front and back communication hole with the other side and further extended and supported along a guide groove provided on the other surface side .

Further, as a second invention, in the inward end portion of the extending portion, when an inward slack phenomenon occurs when the rotating lever is released from the grip operation, a passage having an extension groove that is held back is provided. It is desirable.

According to a third aspect of the present invention, the fixed support portion of the grip lever device is provided with the rotation bearing portion of the rotation lever in the handle virtual penetration portion, and the rotation shaft of the rotation lever is disposed outside the handle .
It is desirable that it be formed across the circumference .

  As a fourth invention, in addition to the above-mentioned invention, it is desirable that the control cable has a return spring between the conduit and the inner cable.

1st invention provides the action point in the same position as the lever part attachment part of the conventional grip lever apparatus by providing an action point in the longitudinal direction one surface side of the rotation lever of the extension part of the exposed inner cable. It is also possible to avoid the contradiction of a decrease in the inner line stroke. The setting of the position of the action point is
For example, it is possible to form a contact portion for always contacting the inner cable during the rotation operation in the rotation lever portion. In addition, said action point means the origin which contacts and holds an inner rope with rotation operation of a rotation lever.

  By setting the exposed dimension of the inner cable at the time of manufacturing the control cable to be 30 mm or more, it is possible to secure a necessary work space in the final process of manufacturing the control cable.

On the other hand, when the control cable is attached to the rotating lever, the exposed size of the inner cable is restricted by the size of the rotating lever. That is, the longitudinal dimension of the pivot lever is at most 100 mm corresponding to the grip width of the hand, and the extension part of the inner line is along the longitudinal direction of the pivot lever, so that the inner line exposure dimension is also maximum. It is considered to be 100 mm. On the other hand, when the inward exposure dimension on the rotating lever side can be set to be short such that it is less than 30 mm (when the exposed inner line exposure dimension can be increased), the use of the rotating lever of the present invention is not appropriate. The conventional grip lever device can be used. From the above, the inboard exposure size to the rotating lever side when attached to the grip lever device was set to 30 mm to 100 mm. However, in consideration of the degree of freedom of selection of the action point setting means (described later), it is desirable to further limit to 40 mm to 80 mm. Note that the inner cable exposed dimension when manufacturing the control cable can be set to 30 mm, and the inner cable exposed dimension toward the rotating lever when attached to the grip lever device can be set to 30 mm only for control cables equipped with return springs. It is done. This is because when no return spring is provided, there is no gap between the inner rope end and the conduit end on the operated side.

  In the second invention, inconsistency behavior of the inboard operation with respect to the operation of the turning lever occurs, a slack phenomenon of the inboard is assumed, but there is an effect that it is possible to prevent damage by preventing local bending of the inboard. That is, when the rotating lever is released from the grip, it is assumed that the return spring is not fully extended and a slack state of the inner cable is temporarily generated. In this case, if the rotating lever is forcibly operated to the open side with the return spring not fully extended, local bending of the inner line will occur if the end of the exposed inner line is constrained by the rotating lever. obtain.

Therefore, as a means for eliminating the sagging phenomenon, it is preferable to provide a play on the path of the exposed inner cable or at the end. Specifically, there are a method of absorbing the sag of the inner tract by forming the exposed inward route in a gentle curve, or a method of absorbing the sag by using the end as a latch. The former method is specified in the first invention, and the latter method is specified in the second invention. These methods are particularly effective as a means for solving the problem in the remote control device for an agricultural machine in which the occurrence of the sagging phenomenon is unavoidable, as will be described later.

According to the third aspect of the invention, there is an effect that it is possible to secure an operable rotation angle even when the operability is improved by bringing the rotation lever portion of the grip lever device close to the handle. Further, since the rotation shaft of the rotation lever is formed across the outer periphery of the handle, it is possible to avoid interference with the handle during the rotation operation.

  In addition to all the above effects, the fourth invention has the effect of reducing the number of parts and the number of assembling steps as a remote control device because it incorporates a return spring.

It is a front view of one Example of the control cable apparatus for remote control of this invention, However, A to-be-operated part contains partial sectional drawing. Right side view of the grip lever device 2 of FIG. The figure which shows the rotation lever part and the inward passage in the AA cross section of FIG. It is a top view of the fixed support part of the grip lever apparatus 2 of FIG. 1, and shows the holding | maintenance state of a conduit | pipe. It is a front view of the fixed support part of the grip lever apparatus 2 of FIG. 1, and shows the holding | maintenance state of a conduit | pipe. Overall production diagram of the control cable used in Fig. 1 Another embodiment of the overall production diagram of the control cable used in the present invention

First, the inboard exposure dimension according to claim 1 is defined. 6 or 7 is an overall production diagram of the control cable used in the present invention, and FIG. 6 or FIG. 7 is used as an explanation of the definition of the inboard exposure dimension. The exposed dimension of the inner line literally means the dimension of the part where the inner line is not covered with anything else. In the example of FIG. 6 incorporating a return spring, this portion is not an exposed portion of the inner rope because the return spring covers the inner rope. Therefore, in both FIG. 6 and FIG. 7, the sum of the a dimension and the b dimension is the inboard exposure dimension.

In addition, for example, when the control cable includes a length adjusting member for the conduit portion and can variably adjust the inward exposure dimension, the control cable is defined by the dimension at the adjustment position where the inner exposure dimension is maximized. This is because the necessary inboard exposure dimension can be secured by selecting the adjustment position.

The final process of cable production is usually caulking work at the end joint of the inner cable or casting work such as a tyco end, and it can be done in the case of ordinary simple equipment, except when dedicated automation equipment can be introduced. Space should be at least 30 mm. The required inboard exposure dimensions correspond to the required work space.

Hereinafter, examples will be sequentially described. FIG. 1 is an example of a remote control cable device (1) used for a handle vertical position adjustment mechanism of a walking-type mobile agricultural machine. An arcuate frame (31) in which a bearing portion of the handle vertical rotation shaft (33) is provided on the handle support base (34) and a plurality of lock holes (32) are provided on the upper and lower sides, which are operated parts, is also supported by the handle. Fixed to the table (34). The handle (H) is supported by a handle vertical rotation shaft (33) so as to be rotatable in the vertical direction, and a grip lever device (2) mounted on the handle (H) and a control cable (4, FIG. 6). The desired rotational position of the handle (H) is selected and locked by remote control according to (1). In the control cable (4, FIG. 6) of the present embodiment, the inward exposure dimension b on the operated side in FIG. 6 is set to zero. In addition, when it is desired to apply desired compression in the initial state of the return spring, it is possible to provide an adjustment mechanism in the conduit portion of the control cable.

The selection lock is provided at the tip of the control cable (4, FIG. 6) as an operation part, and is realized by a lock pin (47a) that can be inserted into and removed from the lock hole (32). In the lock pin holder (35) fixed integrally with the handle (H), the return spring (43) is sandwiched between the lock pin (47a) and the hooked cap (45), and the hooked cap (45) is C The clip (36) is processed to prevent it from coming off.

The operation for adjusting the desired handle vertical position will be described. First, the rotation lever (220) of the grip lever device (2) is gripped at a stroke in the same manner as the operation of the clutch lever. The lock pin (47a) at the tip of the control cable (4, FIG. 6) is in a state of being released from the lock hole (32) of the arcuate frame (31) against the built-in return spring (43). While holding the rotating lever (220), the handle (H) is rotated to the vicinity of a desired vertical position, and the rotating lever (220) is opened. When it is determined that the lock state is not established, the handle position is finely adjusted and inserted into the nearby lock hole (32), so that the lock state is completed.

Next, the control cable (FIG. 6) and the grip lever device (2) used in this embodiment will be described. First, as shown in FIG. 6, the control cable has a conduit (41) and an inner cable (42), and an end on the operated side has a lock pin (47a) with a return spring (43). A nipple end (49) is employed at the inner cable end together with a cap (44) at the conduit end. The final manufacturing process is a caulking (47b) pressing process or a nipple end (49) casting process. In the present embodiment, 60 mm is used as the inner line exposure dimension, so that a sufficient work space is secured in these manufacturing processes. Since the return spring (43) is built in, all the inboard exposed dimensions are distributed to the grip lever side, and cannot be used in the conventional grip lever device.

The grip lever device (2) used in the present embodiment extends the exposed inner cable along the longitudinal surface of the rotating lever (22) and forms a guide groove (G) that holds the path. However, the engaging portion (224) of the nipple end (49) was provided on the other surface side (back surface side) through the communication hole (223). In this embodiment, during the fine adjustment of the handle vertical position described above, the return spring return is restrained on the operated side, and a slack phenomenon of the inner line occurs. The nipple end (49) moves in the push-back direction within the extension groove (225) of the stopper (224), and has a structure capable of absorbing slack. For this reason, even if the rotation lever (220) is returned to the fully open position when the slacking phenomenon of the inner line occurs, the rotation lever (220) is swung to damage the inner line (42b). There is nothing.

In this embodiment, when the rotating lever (220) is operated, the exposed inner rope (42b) is held at the close contact start point in the guide groove (G), so that the operating point is P. This operating point P is set to a position equivalent to the connecting position of the conventional grip lever to ensure a necessary inward stroke amount. Of course, other suitable positions can be set.

The fixed support portion (21) of the grip lever device (2) is fixedly supported on the handle by the fastening member (24). The lever grip position of the rotating lever (220) is brought close to the handle (H) to improve operability, while the lever rotating shaft (230) is virtually passed through the handle in order to eliminate the decrease in the rotating angle. (The extension line of the lever's pivot shaft penetrates the handle).

Next, the assembly of the grip lever device (2) and the control cable (4, FIG. 6) will be briefly described. First, the inner cable (42b) that is exposed by inserting the control cable (4, FIG. 6) into the cavity (213) of the fixed support (21) of the grip lever device (2) is guided to the rotating lever (22). The cable is routed along the groove (G), passed through the communication hole (223), and the nipple end (49) of the inner cable end is held in the extension groove (225) of the back side. Next, after inserting the rotation shaft (230) provided at the tip of the lever straddling portion (221) of the rotation lever (220) into the rotation bearing hole (212) of the fixed support portion (21), the cable The cap (44) at the end of the conduit is held by the butt wall (210) through the conduit insertion hole (211) of the fixed support portion (21) to complete the assembly. Thereafter, the grip lever device (2) is assembled to the handle (H) with a fastening screw (not shown) through the fastening hole (214) of the fixed support portion (21).

Although the control cable (4, FIG. 6) including the return spring (43) has been described above, the present invention can be applied even when the return spring is not embedded as shown in FIG. This is because if the return spring is provided on the operated device side other than the control cable, the same function can be exhibited, and it goes without saying that the grip lever device (2) of the present invention can be adopted.

In addition, the action point P of the exposed inner line is not limited to the closely adhered guide groove (G) as in the embodiment, and the exposed inner line (42b) is held at a predetermined portion on the rotating lever side during the lever operation. If possible, it can be set freely. For example, variations such as holding by a protrusion provided on a guide, holding by a side wall of a communication hole, or holding by a plurality of staggered protrusions can be considered along the longitudinal direction of the lever.

Further, the means for solving the sagging phenomenon of the inner line is not limited to the method in which the inner line end is locked and held so that it can be pushed back as in this embodiment. For example, even if the inner line is temporarily separated from the extension path of the inner line during the slack phenomenon of the inner line, it may be anything that can return to the original extension path at the end of the slack phenomenon. For this reason, it is better to route the extending path with a gentle curve. As a case where a gentle curve is formed, a gentle curve on the same surface due to the projection on the guide surface or the staggered projection described above, or a gentle curve using a step which passes through the front and back communication holes can be considered.

DESCRIPTION OF SYMBOLS 1 ... Remote control cable device H ... Handle 2 ... Grip lever device 21 ... Fixed support part 22 ... Rotating lever 23 ... Rotating shaft 24 ... Screw fastening part 3 ... Operated device 31 ... Arc-shaped frame 32 ... Lock hole 33 ... Handle up / down pivot shaft 34 ... Handle support base 35 ... Lock pin holder 36 ... C clip 4 ... Control cable 41 ... Conduit 42 ... Inner rope 42a ... Operated side exposed inner part 42b ... Lever side exposed inner line Part 43 ... Return spring 44 ... Cap 45 ... Cap 46a with collar ... Eye end 46b ... Caulking 1
47a ... Lock pin 47b ... Caulking 2
48 ... Tyco end 49 ... Nipple end 210 ... Butt wall 211 ... Conduit insertion hole 212 ... Rotating bearing hole 213 ... Cavity 214 ... Fastening hole 220 ... Rotating lever 221 ... Lever straddling part G ... Guide groove P ... Actuation Point 223 ... Communication hole 224 ... Locking portion 225 ... Extension groove 226 ... Inset end fall prevention wall 230 ... Lever rotation shaft

Claims (4)

Flexibility to configure the inner cable to slidably consisting inserted and steel stranded wire or the like to the conduit and conductor pipe comprising a spiral tube or the like having, used in far隔操operation by the reciprocating motion of said cord A control cable having an exposed dimension of the inner cable from the conduit of 30 mm or more,
A grip lever device for remote operation is provided on one end side, and a connection end to the operated side is provided on the other end side, and the exposed dimension on the one end side is set to 30 mm to 100 mm when attached to the grip lever device. With
The grip lever device includes a fixed support portion fixed to the handle, and a rotation lever rotatably supported by the fixed support portion.
The inner cable exposed on the one end side is first stretched and supported along a guide groove having an action point on one longitudinal side (rotating lever gripping pressing surface) of the rotating lever, and then the other surface (the one surface side). A remote control device for an agricultural machine, characterized in that an extending portion is provided which is led to a front and back communication hole with the other side and further extended and supported along a guide groove provided on the other surface side . In the inboard end portion of the extending portion according to claim 1, when an inner sag phenomenon occurs when the turning lever is released from a gripping operation, a path having an extension groove that is held back is provided. Remote control device for agricultural machinery . 3. A rotating bearing portion of a rotating lever is provided in a virtual handle penetrating portion in the fixed support portion of the grip lever device according to claim 1, and a rotating shaft is provided on an outer periphery of the handle . that it is across by forming a remote control device of the agricultural machine according to claim. 4. A remote control device for an agricultural machine according to claim 1, further comprising a return spring between the conduit and the inner cable of the control cable.

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