JPS6349133Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a retractable marker device installed in a seedling planting machine such as a riding rice transplanter.

Generally, seedling planting machines such as riding rice transplanters are equipped with a marker device that serves as an operating indicator to perform the seedling planting work in an orderly manner. It can be used as a marker when needed, but when it is not needed, such as at the end of work, it is known that it can be expanded and contracted so that it does not get in the way of the seat cover covering the aircraft body. On the other hand, since the marker device is designed to be easily visible to the operator while the machine is moving, this easy-to-see marker device is equipped with a warning light, which lights up when it senses that there are few remaining clustered seedlings on the seedling platform. , some are designed to give a warning to workers. However, in the past, this warning light was operated by separately operating an on/off switch installed in the driver's seat etc. to open and close the electric circuit of the warning light, so when the warning light was installed in the retractable marker device as described above, In the case of
At the start or end of work, the two operations of extending and retracting the marker device and switching the intermittent switch are both cumbersome, and I often forget to switch the intermittent switch.
If you forget to leave the intermittent switch OFF when planting seedlings, you may not realize that there are no more planted seedlings, resulting in empty planting, and you may also forget to leave the intermittent switch ON when you finish planting. In this case, there is a problem that electricity is wasted, and if left as is for a long period of time, the battery will discharge and heat up.

The present invention was devised in order to eliminate these drawbacks in view of the above-mentioned actual situation, and the on/off switch for the alarm circuit is automatically switched between ON and OFF by the expansion and contraction operation of the marker device. This eliminates the need for two troublesome operations and allows the alarm circuit to be switched on and off with just the one-touch operation of extending and retracting the marker device, thereby making it possible to reliably eliminate forgetting to switch on and off at the start or end of work. The purpose is to provide a marker device, and in particular, the extendable marker body lights up in response to a command from a detection switch that detects that a predetermined amount of planted seedlings on a seedling stand have been consumed. In a seedling planting machine equipped with a warning light, the detection switch and the warning light are electrically connected through an electric circuit passing through the marker body, and when the marker body is in an extended state, the marker body is in contact and receives electricity. It is characterized by providing a conductive part that closes the circuit but is separated and opens the electric circuit in the contracted state.

Next, the present invention will be explained in more detail based on an embodiment shown in the drawings. In the drawings, reference numeral 1 denotes a traveling body of a riding rice transplanter, and a seedling planting section 2 is attached to the rear side of the traveling body 1 so as to be vertically movable. 3 is a driver's seat, 4 is a driving handle, and 5 is a bonnet, all of which are configured in the conventional manner, but the bonnet 5 is provided with a retractable marker device A used as a center marker. There is. That is, marker device A
The marker body 6 constituting the marker body 6 is constructed by connecting a plurality of rods 7 made of conductive materials such as metals in a telescopic manner (telescopic joint type), including a cylindrical body to be described later for supporting the bonnet 5, so that it can be expanded and contracted in the vertical direction. A support member 8 made of a non-conductive material such as plastic is fixed to the tip end of the support member 8. Reference numeral 9 denotes a translucent cover body that is fitted onto the upper surface of the support body 8 . The support body 8 is provided with a socket 8a, and the socket 8a has a threaded portion electrically connected to the rod 7 and a bottom portion connected to the positive side cord 10 while being insulated from the threaded portion. Thus, it constitutes an electric circuit for the warning light 11 which is screwed and supported by the socket 8a.

On the other hand, the marker main body 6 is supported by the rod 7 having the largest diameter fitted into cylinders 12 and 13 that are connected in the upper and lower cylinders in the form of one cylinder. A screw groove 12a is cut on the outer periphery, and a fixing nut 12b is attached to the bonnet 5.
The marker body 6 is fixed by
The upper cylindrical body 12 is made of a conductive material such as metal, and is electrically connected to the bonnet 5, that is, to the ground side. Further, the lower cylindrical body 13 is made of a non-conductive material such as plastic and is configured so as not to be grounded to the bonnet 5 side. When the marker main body 6 is extended, the upper cylinder 12 contacts the upper cylinder 12 with the maximum diameter rod 7 to open the warning light electric circuit, and the marker main body 6
When reduced, the maximum diameter rod 7 separates from the upper cylindrical body 12 to form a conductive portion that closes the electric circuit. That is, when the marker body 6 is extended, the upper cylindrical body 12
The lower end of the large diameter rod 7 is connected to the lower cylindrical body 13 when it is reduced.
The lower part of the marker body 6 is supported by the protrusion 13a protruding into the lower inner wall surface of the marker body 6, and the skirt part 8b of the support body 8 is fitted into the protrusion of the upper cylinder 12 on the upper side of the marker body 6. As a result, the marker body 6 is held in a non-conducting state separated from the upper cylinder 12, which is a conductive member. 14 is a seedling stand provided in the seedling planting section 2, and the seedling stand 14 is turned on when it detects that a predetermined amount of planted seedlings have been consumed.
The warning light 11 is connected to an electric circuit to turn on the warning light 11. Note that 16 is a battery.

In the embodiment of the present invention configured as described above, when starting the seedling planting work in the field, the marker device A is extended and used as a center marker. When the marker body 6 is extended, the electric circuit passing through the marker body 6 is closed as the maximum diameter rod 7 contacts the upper cylindrical body 12, which is a conductive part.
Therefore, the electric circuit of the warning light 11 is automatically closed by the extension operation of the marker body 6, without the operator having to turn on a dedicated intermittent switch one by one as in the conventional case. During seedling planting work, when a predetermined amount of planted seedlings on the seedling platform 14 are consumed, a warning light 11 is turned on in response to a command from a detection switch 15 that detects this to notify the operator. On the other hand, the marker body 6 is installed so that it does not get in the way when covering the aircraft with a seat cover at the end of work, or to prevent abnormal vibration and damage if the marker body 6 remains extended while driving on the road. When the marker body 6 is reduced, the lower end is fixed to the lower cylinder 13 and the convex bottom of the support 8 fits into the protrusion of the upper cylinder 12, so that the marker body 6 is fixed so that the rod 7 is on the upper side. It is supported in a non-conducting state away from the cylindrical body 12. Therefore, the electric circuit of the warning light 11 is automatically cut off by the reduction of the marker body 6, and the warning light 11 will no longer be turned on even if the detection switch 15 on the seedling platform 14 side is turned on. do not have.

As described above, in the present invention, although the warning light 11 is provided in the marker body 6 at the front where it can be easily seen by the worker, the on/off switching of the electric circuit for the warning light 11 is performed by a dedicated switch as in the conventional case. There is no need for the troublesome operation of changing the on/off switch one by one, and there is no need to extend the marker body 6, which is necessary when planting seedlings, and to retract it, which is necessary to store it out of the way at the end of the work. Since this can be done automatically with a one-touch operation using each of can be completely eliminated.

In summary, the present invention provides a seedling planting machine in which a retractable marker body is equipped with a warning light that lights up in response to a command from a detection switch that detects that a predetermined amount of planted seedlings on a seedling stand have been consumed. , the detection switch and the warning light are electrically connected through an electric circuit passing through the marker body, and the marker body is in contact with the marker body to close an electric circuit when the marker body is in an extended state, but separated when the marker body is in a contracted state. Since a conductive part is provided to open an electric circuit, the warning light is installed in the retractable marker body.
The electric circuit for the warning light can be automatically switched on and off by simply using the one-touch operation of extending and retracting the marker body, without requiring the operator to switch the switch each time. It is possible to eliminate all inconveniences such as empty planting and wasteful discharge of batteries caused by this.

[Brief explanation of the drawing]

The drawings show an embodiment of the marker device in the seedling planting machine according to the present invention, in which FIG. 1 is an overall side view of the seedling planting machine, and FIG. 2 is a vertical cross-section of the marker device showing a reduced state. Figure 3 is a longitudinal section of the marker showing the expanded state. In the figure, A is the marker device, 6 is the marker body,
11 is a warning light, 12 is a conductive part, 14 is a seedling stand, 1
5 is a detection switch.

Claims (1)

[Scope of utility model registration request] In a seedling planting machine in which a retractable marker body is provided with a warning light that lights up in response to a command from a detection switch that detects that a predetermined amount of planted seedlings on a seedling stand have been consumed, the detection switch and the warning light are provided. and the marker body through an electric circuit passing through the marker body, and the marker body has a conductor that contacts the marker body to close an electric circuit when the marker body is extended, but separates and opens an electric circuit when the marker body is contracted. A marker device for a seedling planting machine, characterized in that a marker device is provided with a section.