JP4958285B2 - Ignition switch device - Google Patents

Description

  The present invention relates to an ignition switch device that is disposed in a driver's seat of an industrial machine and starts and stops an engine of the industrial machine.

  An industrial machine, for example, a construction machine (construction machine) is used at a civil engineering / architecture work site, and includes a bulldozer, a power shovel, and a crane truck. An ignition switch device for starting and stopping the engine of the industrial machine is disposed in the driver's seat of such an industrial machine. By rotating the ignition switch device while inserting the ignition key into the key hole of the ignition switch device, The engine is started and stopped.

  A conventional ignition switch device has, for example, a key hole through which a normal ignition key can be inserted, and can start and stop an engine of an industrial machine by being rotated in a predetermined direction while the ignition key is inserted. The switch means and a case formed with an insertion hole for covering the switch means and facing the key hole to the outside. These ignition switch devices are preferably provided with a shutter that can be opened and closed above the key hole in order to prevent muddy water and dust from entering the key hole.

  In general, the driver's seat of an industrial machine monitors an operation lever that allows the industrial machine or an equipment (option) included in the industrial machine to perform a predetermined operation by a swing operation, and an operation state and an operation state. There are a large number of meters and the like, and the ignition switch device to be operated exclusively when the engine is started or stopped is often disposed at a position that is difficult for the driver to see. 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, since the conventional ignition switch device is often disposed at a position that is difficult for the driver to see, when the shutter is simply provided, the shutter is searched by hand when inserting the ignition key into the key hole. There is a problem that it is extremely difficult to insert the ignition key into the key hole.

  The present invention has been made in view of such circumstances. Even when the ignition key is inserted into the key hole by hand, the ignition key can be easily inserted into the key hole. It is to provide a switch device.

The invention of claim 1 is provided in an ignition switch device for starting and stopping an engine of the industrial machine, which is disposed in a driver's seat of the industrial machine, and has a key hole through which a normal ignition key can be inserted, The switch means that can start and stop the engine of the industrial machine by being rotated in a predetermined direction with the ignition key inserted, and the insertion hole that covers the switch means and faces the key hole to the outside are formed. A shutter that is disposed on the surface of the case and is rotatable between a closed position that closes the insertion hole of the case and an open position that opens the insertion hole and exposes the key hole to the outside. A notch formed on the shutter and capable of rotating the shutter at the closed position to the open position by contacting the tip of the ignition key. And, wherein said shutter while the tip of the ignition key is brought into contact with the cut press to the process of rotating to the open position, characterized in that the tip of the ignition key matches the formation position and orientation of the key hole And

  According to a second aspect of the present invention, in the ignition switch device according to the first aspect, the shutter is urged in a direction to be normally closed, and the notch of the shutter is formed in an arc shape. And

  A third aspect of the present invention is the ignition switch device according to the first or second aspect, comprising a groove having a V-shaped cross section formed on the surface of the case, toward the notch of the shutter in the closed position. It has a main guide shape that extends and can guide the tip of the ignition key to the notch.

  A fourth aspect of the invention is the ignition switch device according to the third aspect, wherein the ignition switch device is formed on the surface of the case along the contour edge of the shutter in the closed position, and extends toward the main guide shape. It has a sub-guide shape that can guide the tip of the ignition key to the main guide shape.

According to the first aspect of the present invention, in the process of pressing and rotating the shutter to the open position while bringing the tip of the ignition key into contact with the notch, the tip of the ignition key coincides with the formation position and orientation of the key hole. Therefore, if the ignition key is pushed in as it is after the match, it can be inserted into the key hole, and even when the ignition key is flicked through the key hole, it is easy to insert the ignition key into the key hole. be able to.

  According to the second aspect of the present invention, the shutter is urged in the direction of the normally closed position, and the notch of the shutter is formed in an arc shape, so that the rotation operation of the ignition key inserted through the key hole is performed. Can be performed smoothly.

  According to the invention of claim 3, the main guide is formed of a groove having a V-shaped cross section formed on the surface of the case, and extends toward the notch of the shutter in the closed position so as to guide the tip of the ignition key to the notch. Since it has a shape, when inserting the ignition key into the key hole by hand, it is possible to make the operation of inserting the ignition key into the key hole easier.

  According to the invention of claim 4, since the auxiliary guide shape capable of guiding the tip of the ignition key to the main guide shape is formed on the surface of the case, the operation of inserting the ignition key into the key hole is further facilitated. Can do. In addition, since the auxiliary guide shape is formed on the surface of the case along the contour edge of the shutter at the closed position, the tip of the ignition key can be reliably guided to the main guide shape using the thickness of the shutter. Can do.

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
The ignition switch device according to the present embodiment is disposed in a driver's seat of an industrial machine (construction machine) such as a bulldozer, a power shovel, or a crane truck used in a civil engineering / architecture work site. As shown, the switch unit 2, the case 3, the shutter 4, the main guide shape 5, and the sub guide shape 6 are mainly configured.

  The switch means 2 is provided with a key hole 2a (see FIG. 3) through which a regular ignition key K can be inserted, and is rotated in a predetermined direction with the ignition key K inserted, whereby the engine of the industrial machine is operated. It can be started and stopped. Specifically, the switch means 2 includes a cylinder lock provided with a plurality of tumblers in the key hole 2a, a switch board that can be switched by forming or blocking a predetermined electric circuit by rotation of the cylinder lock, and the like. A general-purpose ignition switch is provided.

  As shown in FIG. 5, the ignition key K has a key shape with the tip Ka (protruding end) being V-shaped. If it is a normal one, the tumbler and key of the cylinder lock in the switch means 2 are formed. It is configured to match the shape and to rotate the cylinder lock. In addition, the code | symbol Kb in the figure has shown the holding part of the ignition key K, and a driver | operator will hold | grip this holding part Kb and will operate the ignition key K. FIG.

  The case 3 is formed with an insertion hole 3b that covers the upper side of the switch means 2 and faces the key hole 2a to the outside. The surface 3a is printed with a suggestion of the position of the ignition key K or the like. ing. The case 3 is made of a resin molded product obtained by molding a predetermined resin, and various shapes such as a main guide shape 5 and a sub guide shape 6 which will be described in detail later are built on the surface of the case 3 at the time of manufacture. Yes.

  The shutter 4 is disposed on the surface 3a of the case 3, and as shown in FIGS. 2 and 3, the shutter 4 closes the insertion hole 3b of the case 3 (position shown in FIG. 2) and opens the insertion hole 3b. The key hole 2a is rotatable about a rotation axis L between an open position (a position shown in FIG. 3) where the key hole 2a faces outside (upward). Thereby, when this shutter 4 exists in a closed position, it can prevent that muddy water, dust, etc. penetrate | invade covering the key hole 2a.

  Further, the shutter 4 is urged in a direction to be always in a closed position by a spring (not shown) (a torsion coil spring urged in the direction of the closed position), and when the ignition key K is extracted, the shutter 4 in the open position is It is closed naturally by rotating to the closed position by the biasing force of the spring. Thereby, after the ignition key K is extracted from the key hole 2a, the operation of closing the shutter 4 becomes unnecessary, and the operability can be further improved.

  As shown in FIGS. 4 and 5, the main guide shape 5 is formed by a groove having a V-shaped cross section formed on the surface 3a of the case 3, and the insertion hole 3b (strictly speaking, a notch of the shutter 4 covering the insertion hole 3b). 4a) extends toward the key hole 2a so that the tip Ka of the ignition key K can be guided. The main guide shape 5 is configured to extend substantially linearly from the edge of the case 3 to the insertion hole 3b and to be narrowed from the edge toward the insertion hole 3b.

  In order to start the engine of the industrial machine, the driver seated in the driver's seat appropriately moves the tip Ka of the ignition key K along the surface 3a of the case 3, and as shown in FIG. When the guide shape 5 is reached, the ignition key K is moved along the main guide shape 5 to move the tip Ka to the key hole 2a side (shutter 4) without visual inspection as shown in FIG. To the notch 4a). Since the main guide shape 5 is formed by a groove having a V-shaped cross section, as shown in FIG. 5, it matches the shape of the tip Ka of the ignition key K and can guide the tip Ka well. Yes.

  Further, as shown in FIG. 5, a step portion 5 a is formed at the boundary between the surface 3 a of the case 3 and the main guide shape 5, and the tip Ka of the ignition key K is placed along the surface 3 a of the case 3. Thus, in the process of moving to the main guide shape 5, the main guide shape 5 is configured to slide down the tip Ka. On the other hand, the movement of the tip Ka of the ignition key K toward the surface 3a side of the case 3 in the process of being guided by the main guide shape 5 can be restricted.

  That is, the step portion 5a has an upward slope (wall) when the tip Ka of the ignition key K moves from the main guide shape 5 to the surface 3a side of the case 3, and restricts the movement in that direction, and from the surface 3a. When moving to the main guide shape 5 side, it becomes a downward slope and does not hinder the movement in that direction, but rather can be smoothly brought to the main guide shape 5 so as to slide down. Therefore, according to the step portion 5a of the present embodiment, the tip Ka of the ignition key K is prevented from coming off from the main guide shape 5 in the process of being guided by the main guide shape 5, and the tip of the ignition key K is prevented. Ka can be reliably guided to the key hole 2a.

  As shown in FIGS. 2 and 10, the auxiliary guide shape 6 is formed on the surface 3 a of the case 3 along the contour edge of the shutter 4 in the closed position, and extends toward the main guide shape 5 so as to be ignited. The tip Ka of K can be guided to the main guide shape 5. That is, the upper edge (the side on which printing is performed) of the shutter 4 has an arc shape as shown in the figure, and the tip is the main guide shape 6 while the sub guide shape 6 is formed along the arc shape. Therefore, if the tip Ka of the ignition key K is moved along the sub guide shape 6, the main guide shape 6 can be reached and guided to the insertion hole 3b side as described above. . Further, since the auxiliary guide shape 6 is formed on the surface 3a of the case 3 along the contour edge of the shutter 4 in the closed position, the tip Ka of the ignition key K can be reliably secured by using the thickness of the shutter 4. The main guide shape 5 can be guided.

  On the other hand, an arcuate cutout 4 a that can abut the tip Ka of the ignition key K guided by the main guide shape 5 is formed at a position on the extension of the main guide shape 5 of the shutter 4. Then, as shown in FIG. 7, when the tip Ka of the ignition key K guided by the main guide shape 5 is brought into contact with the notch 4 a and then further moved in the same direction, the tip Ka causes the notch 4 to move. The shutter 4 can be pressed through the rotation axis L so that the shutter 4 can be rotated about the rotation axis L.

  Here, in the present embodiment, as shown in FIG. 8, the ignition key that presses the notch K is set so that the notch 4 a and the key hole 2 a are parallel in the rotation process of the shutter 4. The tip Ka of the K is configured to coincide with the formation position of the key hole 2a. Thus, in the process of pressing and rotating the shutter 4 to the open position with the tip Ka of the ignition key K, as shown in FIG. 9, the tip Ka of the ignition key K and the key hole 2a match (position and orientation). If the ignition key K is pushed into the switch means 2 from this state, it can be inserted into the key hole 2a.

  Thereafter, when the ignition key K inserted into the key hole 2a is rotated in a predetermined direction (rightward in the present embodiment), the switch means 2 is operated to start the engine of the industrial machine. Further, in order to stop the engine of the industrial machine, if the ignition key K is rotated in the opposite direction (left direction in the present embodiment), the switch means 2 can be operated to stop the engine.

  Since the shutter 4 is urged toward the closed position when the ignition key K is rotated as described above, the notch 4a and the ignition key K are in contact with each other. Since it is formed in an arc shape, the rotation operation of the ignition key K can be performed smoothly. When the ignition key K is extracted from the key hole 2a, the shutter 4 is naturally closed by rotating to the closed position by the urging force of the spring, as described above.

  According to the ignition switch device 1 according to the above-described embodiment, the tip Ka of the ignition key K is rotated in the process of pressing and rotating the shutter 4 to the open position while bringing the tip Ka of the ignition key K into contact with the notch 4a. Since it coincides with the formation position of the key hole 2a, if the ignition key K is pushed as it is after the coincidence, it can be inserted into the key hole 2a. Therefore, even when the ignition key K is inserted through the key hole 2a by groping, the operation of inserting the ignition key K into the key hole Ka can be facilitated.

  In addition, the main guide shape 5 is formed by a groove having a V-shaped cross section formed on the surface 3a of the case 3 and can guide the tip Ka of the ignition key K to the key hole 2a. Even when it is inserted through the hole 2a, the operation of inserting the ignition key K into the key hole 2a can be facilitated. Further, since the auxiliary guide shape 6 capable of guiding the tip Ka of the ignition key K to the main guide shape 5 is formed on the surface 3a of the case 3, the operation of inserting the ignition key K into the key hole 2a is further facilitated. can do.

  That is, the driver who wants to start the engine puts the tip Ka of the ignition key K against the surface 3a of the case 3 and moves it appropriately along the surface 3a without observing it. Alternatively, if the auxiliary guide shape 6 is entered, the tip Ka is guided to the shutter 4 covering the insertion hole 3b along the main guide shape 5 and the auxiliary guide shape 6 and is in contact with the notch 4a of the shutter 4 If it is further moved in the same direction, the shutter 4 is rotated and guided to the key hole 2a.

  Although the present embodiment has been described above, the present invention is not limited to this. For example, the main guide shape 5 or the sub guide shape 6 may not be formed on the surface 3 a of the case 3. In other words, as long as the tip Ka of the ignition key K is brought into contact with the notch 4a, the tip Ka and the key hole 2a coincide with each other in the process of pressing and rotating the shutter 4 as it is. Is easier.

  Further, the notch of the shutter 4 is not limited to an arc shape, but may be another shape (rectangular shape or the like) with which the tip Ka of the ignition key K can abut. Examples of applicable industrial machines include a bulldozer, a scrape dozer, a hydraulic excavator (such as a backhoe and a power shovel), and a truck with a crane device.

If the ignition switch device is such that the tip of the ignition key matches the position and orientation of the key hole in the process of pressing and rotating the shutter to the open position while the tip of the ignition key is in contact with the notch, the external shape The present invention can also be applied to those having different functions or those having other functions added.

The perspective view which shows the ignition switch apparatus which concerns on embodiment of this invention The top view which shows the ignition switch device (shutter is a closed position) The top view which shows the ignition switch device (shutter is an open position) The figure which was seen from the side in the ignition switch apparatus, and is a figure which shows the process in which the ignition key is guided by the main guide shape VV sectional view in FIG. The figure which was seen from the upper surface in the same ignition switch apparatus, and is a figure which shows the process in which the ignition key is guided by the main guide shape The figure which was seen from the upper surface in the same ignition switch apparatus, and shows the state which the ignition key guided by the main guide shape contact | abutted to the notch of the shutter The top view which shows the positional relationship of the notch of a shutter and the key hole in the ignition switch device The perspective view which shows the state which the ignition key corresponded to the key hole in the ignition switch device XX sectional view in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ignition switch apparatus 2 Switch means 2a Key hole 3 Case 3a Surface 3b Insertion hole 4 Shutter 4a Notch 5 Main guide shape 6 Sub guide shape K Ignition key Ka Tip

Claims (4)

In an ignition switch device disposed in a driver's seat of an industrial machine for starting and stopping the engine of the industrial machine,
Switch means that has a key hole through which a regular ignition key can be inserted, and can start and stop the engine of the industrial machine by being rotated in a predetermined direction while the ignition key is inserted,
A case formed with an insertion hole that covers the switch means and faces the key hole to the outside;
A shutter disposed on the surface of the case and rotatable between a closed position for closing the insertion hole of the case and an open position for opening the insertion hole and facing the key hole to the outside;
A notch formed on the shutter and capable of rotating the shutter at the closed position to the open position by contacting the tip of the ignition key;
The tip of the ignition key matches the formation position and orientation of the key hole in the process of pressing and rotating the shutter to the open position while the tip of the ignition key is in contact with the notch. An ignition switch device characterized by.   2. The ignition switch device according to claim 1, wherein the shutter is urged in a direction to be normally closed, and the notch of the shutter is formed in an arc shape.   The groove has a V-shaped cross section formed on the surface of the case, and has a main guide shape that extends toward the notch of the shutter in the closed position and can guide the ignition key tip to the notch. The ignition switch device according to claim 1 or 2.   It is formed on the surface of the case along the contour edge of the shutter in the closed position, and has a secondary guide shape that extends toward the main guide shape and can guide the tip of the ignition key to the main guide shape. The ignition switch device according to claim 3.

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