JP4906707B2 - Anti-theft device for portable engine work machine - Google Patents

Description

  The present invention relates to an anti-theft device for a portable engine working machine such as an engine-driven generator, a welding machine, and a compressor used in an outdoor construction site.

   In order to suppress noise generated from the engine, the portable engine working machine covers the working machine such as the engine, the generator, the welding machine, and the compressor with a metal casing. Such a portable engine work machine is provided with a hanging bracket and a rope hanging bracket on a housing roof at a substantially center of gravity position of the working machine, and a crane hook or a wire rope is provided on the case roof so as to be convenient when moving on a construction site. The work machine can be lifted and moved by hanging it.

  FIG. 7 is a diagram showing an example of a portable engine work machine, in which FIG. 7 (a) is a plan view and FIG. 7 (b) is a right side view. In FIG. 7, 1 is a roof of the work machine housing, 2 is a recess provided on the upper surface of the roof 1, 3 is a rod-shaped hanging bracket provided so as to span the center of the recess 2, and 4 is in communication with the recess 2. The corner opening, 5 is a rope fitting provided to span the corner opening 4, 6 and 7 are doors, 8 is a door handle, and 9 is a cylinder lock for locking the door handle 8. . In a portable engine work machine, the engine side (the right side in FIG. 7 (b)) is usually the front side, and the work machine side such as a generator driven by the engine is the rear side, and doors 6 and 7 are provided. The side that is on the left and right sides.

  The hanging bracket 3 is provided at the position of the center of gravity of the work implement. When moving on the construction site, the work implement can be easily placed on a truck or the like by hanging the suspension fitting 3 with a crane hook. Can be moved. On the other hand, since it is easy to move the work machine, there are many cases of theft in which other people take away the work machine from the construction site as long as there is a truck with a crane. Further, even if the crane hook is not hung on the hanging metal fitting 3, if the wire rope is hung on the rope hanging metal fitting 5, the working machine can be lifted and placed on a truck or the like.

  In view of this, several antitheft devices have been proposed that prevent others from hanging a crane hook on the hanging bracket 3 or hanging a wire rope on the rope hanging bracket 5 without permission. For example, as shown in Patent Literature 1, the spaces below the hanging metal fittings 3 and the rope hanging metal fittings 5 are respectively closed with closing members, and locked by a locking mechanism so that others can use the hanging metal fittings 3 without permission. A technique has been proposed in which a hook of a crane is not hung and a wire rope is not hung on the rope hanger 5.

  Patent Document 2 covers one of the corner openings 4 on both sides and the upper portion of the recess 2 with one closing member, and covers the other corner opening 4 with another closing member, A technique has been proposed in which each of the blocking members is locked by a lock mechanism so that no other person can hung a crane hook on the suspension fitting 3 or a wire rope on the rope hanging piece 5 without permission. Furthermore, Patent Document 2 also shows a configuration in which the corner openings 4 on both sides and the upper portions of the recesses 2 are covered with one closing member.

  In Patent Document 3, the upper portion of the recess 2 and the corner opening 4 are covered with a plate-shaped antitheft cover, and the antitheft cover is fixed with an antitheft screw whose head has a special shape. By storing the special tool for fastening the screw in another place, other people who do not have the special tool cannot remove the anti-theft cover. A technique has been proposed in which a wire rope cannot be hung on the hanging bracket 5.

  Furthermore, in Patent Document 3, as a reference example, as shown in FIG. 8, a theft prevention cover 30 including a portion covering the upper portion of the recess 2 and a portion bent at a right angle to cover the corner opening 4. Is also connected to the roof 1 of the housing with a hinge 31, and the antitheft cover 30 covers the upper part of the recess 2 and the corner opening 4 and then is locked by a cylinder lock 32.

If these antitheft devices are used, it is possible to prevent a crane hook from being hung on the hanging metal fitting 3 and to prevent a wire rope from being hung from the rope hanging metal fitting 5 to illegally hold the work implement. You can prevent leaving.
Japanese Patent No. 3789414 JP 2005-325844 A Japanese Patent No. 3994136

   However, among the anti-theft devices of the conventional portable engine working machine, the anti-theft device as disclosed in Patent Document 1 is such that the suspension fitting 3 and the two rope hooks 5 are closed with separate parts. As a result, there are problems in that it takes time to install, and the number of parts increases, which increases the management burden.

  The antitheft device as shown in Patent Document 2 covers one corner opening 4 and the upper part of the recess 2 with one closing member, and the other corner opening 4 with another closing member. When covering, it takes time to install, increases the number of parts, increases the management burden, and covers the corner openings 4 on both sides and the upper portions of the recesses 2 with a single closing member. Is required to be moved to the other corner opening 4 side while engaging the reinforcing rib and the latching portion with the rope hanging bracket 5 and the hanging bracket 3 on one side, respectively. There was a problem that it took. Further, in any case, when the antitheft device is released, it is separated from the work machine, so that it is necessary to store the removed parts, which increases the management burden.

  Further, the anti-theft device as shown in Patent Document 3 uses an anti-theft screw whose head has a special shape, so inventory management in case of loss or storage management of a dedicated tool for fastening the anti-theft screw. There was a problem of increasing the burden on the company. On the other hand, the one shown in FIG. 8 does not have such a problem because it does not use an anti-theft screw whose head has a special shape, but the portions covering the corner openings 4 on both sides are simply bent. Since it is only covered with a plate-like body, there is a problem that it can be easily pry open by inserting a tool such as a bar into the gap, and the wire rope can be passed through the rope hook 5.

   In view of such problems, the present invention provides an antitheft device for a portable engine work machine that does not have a burden of managing parts and tools, does not require troublesome mounting, and does not easily be opened. It is intended to do.

     In order to solve the above problems, an invention according to claim 1 of the present application is provided on an engine, a working machine driven by the engine, a casing covering the engine and the working machine, and left and right surfaces of the casing. An anti-theft device for a portable engine working machine, comprising: a door that opens and closes in a hinged door manner and is locked by a lock; and rod-shaped suspension brackets that are hung on both side walls of a groove-shaped recess formed in the roof of the housing A concave cover that is bent at the right and left ends of the roof and is provided so as to cover the concave from the roof top surface to the left and right sides of the housing, and is attached to the upper opening one side edge of the concave by a hinge. And a locking mechanism that locks the closed state when the concave cover is closed, and a mechanism that is attached to both ends of the concave cover via hinges and is pressed to the tip by the upper edge of the door. Has stop Characterized in that a Rukakaritome cover.

     The invention according to claim 2 of the present application is provided with an engine, a working machine driven by the engine, a casing that covers the engine and the working machine, and left and right sides of the casing, and is opened and closed in a hinged door manner. And an antitheft device for a portable engine working machine comprising a door locked by a lock, and rod-like suspension fittings hung on both side walls of a groove-like recess formed in the roof of the housing, Covered from the left end to the right end of the roof to cover the recess, a recess cover attached to the upper opening one side edge of the recess by a hinge, and when the recess cover is closed, the closed state is locked And a locking cover that is attached to both ends of the recess cover via hinges and has a locking portion that is pressed at the top edge of the upper edge of the door. To do.

   The invention according to claim 3 of the present application is the invention according to claim 1 or 2, wherein the invention is applied to a portable engine work machine having rope hanging brackets spanned on both side walls at corner openings at both ends of the recess. It is characterized by that.

   The invention according to claim 4 of the present application is the invention according to claim 1, 2 or 3, wherein the hinge for attaching the recess cover to the edge of the upper opening on one side of the recess is welded on one side of the hinge to the recess cover. The opposite side of the hinge is screwed to the side wall of the recess.

   The invention according to claim 5 of the present application is the invention according to claim 1, 2, 3 or 4, wherein the hinge for attaching the locking cover to both ends of the concave cover is welded to one side of the hinge to the locking cover. In addition, a bolt is welded to the opposite side of the hinge, the bolt is inserted from the front side to the back side of the concave cover, and the nut is fixed to the rear side of the concave cover.

   The invention according to claim 6 of the present application is the invention according to claim 1, 2, 3, 4 or 5, wherein the key for unlocking the door and the lock for locking the closed state of the recess cover are provided. The same key is used as the key for unlocking the mechanism.

   The invention according to claim 7 of the present application is the invention according to claim 1, 2, 3, 4 or 5, wherein the key for unlocking the door and the lock for locking the closed state of the recess cover are provided. A different key is used as a key for unlocking the mechanism.

   The antitheft device for a portable engine working machine of the present invention has the following effects.

   That is, in the invention according to claim 1, a recess cover is attached to the upper opening one side edge of the recess by a hinge so that it can be opened and closed, and is bent at the left and right ends of the roof and extends from the roof top surface to the housing left and right surfaces. When the concave cover is closed, it is locked by a locking mechanism, and a locking cover is attached to both ends of the concave cover via hinges. I tried to hold it down at the upper edge of the door. As a result, the recessed cover and the locking cover are integrated with the roof and hinges of the work machine housing, so there is no burden of managing parts and tools, and it takes less time to install, and the recessed cover Since it is double-locked by the lock mechanism provided and the lock of the engine work machine door, theft using the hanging bracket can be surely prevented.

  In the invention according to claim 2, a recess cover is attached to the upper opening one side edge of the recess by a hinge so as to be opened and closed, and is provided so as to cover the recess from the left end to the right end of the roof. When closed, it is locked by a locking mechanism, and a locking cover is attached to each end of the recessed cover via hinges, and the locking portion at the tip is pressed by the upper edge of the engine work machine door I made it. As a result, the recessed cover and the locking cover are integrated with the roof and hinges of the work machine housing, so there is no burden of managing parts and tools, and it takes less time to install, and the recessed cover Since it is double-locked by the lock mechanism provided and the lock of the engine work machine door, theft using the hanging bracket can be surely prevented.

  In the invention according to claim 3, the antitheft device for the portable engine work machine according to claim 1 or 2 is provided with a rope hook that spans both side walls at the corner openings at both ends of the recess. It was applied to a portable engine work machine. As a result, it is possible to prevent theft using the rope hanging bracket by covering and locking the rope hanging bracket together with the hanging bracket by the recess cover and the locking cover.

  According to a fourth aspect of the present invention, in the antitheft device for the portable engine working machine according to the first, second, or third aspect, the hinge for attaching the concave cover to the one side edge of the upper opening of the concave is a hinge. The side was welded to the recess cover, and the opposite side of the hinge was screwed to the side wall of the recess. As a result, when removing the concave cover for replacement, etc., it can be removed simply by loosening the screw.When the concave cover is closed, the screw is hidden under the concave cover, and the joint that appears on the outer surface is Since everything is welded, the concave cover cannot be opened by a malicious third party.

  According to a fifth aspect of the invention, in the antitheft device for a portable engine working machine according to the first, second, third or fourth aspect, the hinge for attaching the locking cover to both ends of the concave cover is one of the hinges. The side was welded to the locking cover, the bolt was welded to the opposite side of the hinge, the bolt was inserted from the front side to the back side of the concave cover, and the nut was fixed on the reverse side of the concave cover. As a result, when removing the locking cover for replacement, etc., it can be removed from the recessed cover simply by loosening the nut, and when the recessed cover is closed, the nut is hidden under the recessed cover and placed on the outer surface. Since all the joining portions that appear are welded, the locking cover is not removed by a malicious third party.

  According to a sixth aspect of the present invention, in the antitheft device for the portable engine working machine according to the first, second, third, fourth or fifth aspect, the key for unlocking the door and the recess cover are provided. Since the same key is used as the key for unlocking the lock mechanism to be locked, the key of the cylinder lock 12 of the door handle 8 and the recess cover 10 can be managed by managing only one key, thereby reducing the burden of key management. Is done.

  According to a seventh aspect of the present invention, in the antitheft device for the portable engine working machine according to the first, second, third, fourth, or fifth aspect, the key for unlocking the door and the recess cover Since a different key is used as the key for unlocking the locking mechanism that locks the closed state, two keys are required to open the recess cover, and double theft prevention can be achieved.

   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a diagram showing a first embodiment of the present invention, FIG. 2 is a longitudinal sectional view thereof, and FIG. 3 is a partial right side view thereof. 1 to 3, reference numerals 1 to 5 correspond to those in FIG. 7, 10 is a recess cover, 11 and 15 are hinges, 12 is a cylinder lock, 13 is a bracket, 14 is a reinforcing material, and 16 is a bolt. , 17 is a locking cover, and 18 is a door receiving portion.

  A groove-shaped recess 2 is provided on the upper surface of the roof 1 of the work machine housing so as to penetrate from the left end to the right end, and a hanging metal fitting 3 is provided so as to hang over both side walls of the center of the recess 2. In addition, rope hooks 5 are provided at the corner openings 4 at the left and right ends of the recess 2 so as to be hung on both side wall surfaces of the corner openings 4. In this embodiment, the rope hanger 5 is formed in a mountain shape such that when the wire rope is hung on it, the center portion protrudes outward so that the rope does not move left and right and is stable.

  The hanging bracket 3 is provided at the position of the center of gravity of the work implement. When moving on the construction site, the work implement can be easily placed on a truck or the like by hanging the suspension fitting 3 with a crane hook. It can be moved. In addition, a rope can be hooked and fixed to the rope hanging bracket 5 so that the working machine does not move when it is moved on a truck.

  In such a portable engine working machine, the concave cover 10 is provided so that a crane hook cannot be hung on the hanging metal fitting 3 and a wire rope can be hung on the rope hanging metal fitting 5 by covering the upper opening of the concave portion 2. Is provided. The recess cover 10 is attached to the opening one side edge of the recess by hinges 11, 11. The hinges 11, 11 are welded on one side of the hinges 11, 11 to the edge of the recess cover 10. The opposite side is screwed to the side wall of the recess 2. By doing so, when removing the concave cover 10 for replacement or the like, it can be removed simply by loosening the screw. When the concave cover 10 is closed, the screw is hidden under the concave cover 10. Since the other joints appearing on the outer surface are all welded, the concave cover 10 is not illegally opened by a third party.

  The recess cover 10 is bent at a right angle at the left and right ends of the roof 1 and extended to the left and right surfaces of the work machine housing, and can cover the corner opening 4 of the recess 2. . In addition, a key-shaped reinforcing member 14 is welded in the longitudinal direction on the back side of the concave cover 10 to reinforce the concave cover 10 so that it cannot be easily opened even if a bar or the like is used.

  Further, locking covers 17 and 17 are attached to both ends of the concave cover 10 via hinges 15 and 15, respectively, and their tip portions are bent into a crank shape to form locking portions 17a. Yes. When the doors 6 and 7 are closed, the locking portions 17a are pressed by the upper edges of the doors 6 and 7 so that they cannot be removed unless the doors 6 and 7 are opened.

  The hinges 15, 15 are welded on one side to the base of the locking cover 10, bolts 16, 16 are welded to the opposite side of the hinges 15, 15, and these bolts 16, 16 are connected from the front side of the recessed cover 10. It is inserted toward the back side and is fastened with a nut on the back side of the recess cover 10. By doing so, when removing the locking cover 17 for replacement or the like, it can be removed from the recess cover 10 simply by loosening the nut. When the recess cover 10 is closed, the nut is removed from the recess cover 10. Since the other joints that are hidden underneath and appear on the outer surface are all welded, the locking cover 17 is not illegally removed by a third party.

  Further, the concave cover 10 is provided with a cylinder lock 12 as a lock mechanism for preventing the concave cover 10 from being opened. Further, a U-shaped bracket 13 is welded at a position facing the cylinder lock 12 on the side wall of the recess 2, and when the recess lock 10 is closed and the cylinder lock 12 is locked, the engagement piece 12 a of the cylinder lock 12 is It engages with it so that the concave cover 10 cannot be opened.

  If the key for unlocking the cylinder lock 12 is the same as the key of the cylinder lock 9 of the door handle 8, the cylinder lock 12 of the recess cover 10 can be managed just by managing the key of the door handle 8 as in the prior art. Key can be managed, so the burden of key management is not increased. On the other hand, if a key different from the key of the cylinder lock 9 of the door handle 8 is used as a key for unlocking the cylinder lock 12, theft can be prevented twice.

  FIG. 4 is a diagram showing a second embodiment of the present invention, FIG. 5 is a longitudinal sectional view of FIG. 4, and FIG. 6 is a partial right side view. 4-6, the codes | symbols 1-14 respond | correspond to the thing of FIGS. 1-3, 19 is a latching cover, 20 is a hinge, 21 is a volt | bolt.

  In the first embodiment, the concave cover 10 is bent at a right angle at the left and right ends of the roof 1 and extended to the left and right surfaces of the work machine housing so as to cover the corner openings 4 of the concave 2. In this embodiment, the concave cover 10 extends to the shoulder portion of the roof 1, and locking covers 19 are attached to both ends of the concave cover 10 via hinges 20. The locking cover 19 has a length that reaches the upper edge of the doors 6 and 7, and has a locking portion 19 a that is pressed by the upper edge of the doors 6 and 7 at the tip thereof. When the doors 6 and 7 are closed, they cannot be opened. In addition, the attachment structure of the hinges 11 and 11 is the same as that of 1st Example.

  As with the hinges 15 and 15 of the first embodiment, the hinges 20 and 20 are welded on one side to the base of the locking cover 10, and welded to the opposite sides are bolts 21 and 21. 21 is inserted from the front side of the concave cover 10 toward the back side, and nuts are fastened on the rear side of the concave cover 10. The cylinder lock 12 and its key are the same as in the first embodiment.

  In the second embodiment, even when the concave cover 10 is closed and locked with the cylinder lock 12, the locking covers 19 and 19 can be raised to open the corner opening 4 if the doors 6 and 7 are opened. For this reason, when storing a plurality of work machines in the same place, etc., the locking covers 19 and 19 facing each other are opened, and the rope hooks 5 and 5 are connected with chains or the like. It can also be locked. By doing so, when a third party tries to steal the work machine by another means that does not use the hanging bracket 3 or the like, it cannot be stolen because it is connected to another work machine.

  In addition, although each said Example demonstrated the case where it applied to the engine working machine with which the corner | angular part opening part 4 and the rope hooking metal fitting 5 were provided in the both ends of the recessed part 2, this invention is the both ends of the recessed part 2. Can be applied to a work machine in which the corner opening 4 and the rope bracket 5 are not provided. Moreover, although the example which uses the cylinder lock 12 as a locking mechanism of the recessed part cover 10 was shown, locking mechanisms other than the cylinder lock 12 can also be used suitably.

It is a figure which shows 1st Example of this invention. It is a longitudinal cross-sectional view of the thing of FIG. It is a partial right view of the thing of FIG. It is a figure which shows 2nd Example of this invention. It is a longitudinal cross-sectional view of the thing of FIG. It is a partial right view of the thing of FIG. It is a figure which shows an example of a portable engine working machine. It is a figure which shows an example of the anti-theft device of the conventional portable engine working machine.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Roof 2 ... Recessed part 3 ... Hanging metal fitting 4 ... Corner part opening part 5 ... Rope hook metal fitting 6, 7 ... Door 8 ... Door handle 9 ... Cylinder lock 10,30 ... Recessed cover 11,15,20,31 ... Hinge 12 32 ... Cylinder lock 13 ... Bracket 14 ... Reinforcing material 16 ... Bolt 17, 19 ... Locking cover 18 ... Door receiving part

Claims (7)

An engine, a working machine driven by the engine, a casing that covers the engine and the working machine, a door that is provided on the left and right surfaces of the casing, opens and closes like a hinged door, and is locked by a lock, and the casing An anti-theft device for a portable engine working machine comprising rod-like hanging brackets hung on both side walls of a groove-like recess formed in the roof of the body,
A concave cover that is bent at the right and left ends of the roof and is provided so as to cover the concave from the roof upper surface to the left and right sides of the housing, and is attached to the upper opening one side edge of the concave by a hinge.
A lock mechanism that locks the closed state when the concave cover is closed;
A portable engine operation comprising a latch cover attached to both ends of the recess cover via hinges and having a latch portion pressed at the top edge of the upper edge of the door. Anti-theft device for machine. An engine, a working machine driven by the engine, a casing that covers the engine and the working machine, a door that is provided on the left and right surfaces of the casing, opens and closes like a hinged door, and is locked by a lock, and the casing An anti-theft device for a portable engine working machine comprising rod-like hanging brackets hung on both side walls of a groove-like recess formed in the roof of the body,
A concave cover that is provided so as to cover the concave portion from the left end to the right end of the roof, and is attached to the upper opening one side edge of the concave portion by a hinge so as to be freely opened and closed;
A lock mechanism that locks the closed state when the concave cover is closed;
A portable engine operation comprising a latch cover attached to both ends of the recess cover via hinges and having a latch portion pressed at the top edge of the upper edge of the door. Anti-theft device for machine.   The theft prevention of the portable engine working machine according to claim 1 or 2, wherein the portable engine working machine is applied to a portable engine working machine having rope hanging brackets spanning both side walls at corner openings at both ends of the recess. apparatus.   The hinge for attaching the recess cover to the edge of the upper opening on one side of the recess is welded on one side of the hinge to the recess cover and screwed to the side wall of the recess on the opposite side of the hinge. The antitheft device for a portable engine working machine according to 2 or 3.   A hinge for attaching a locking cover to both ends of the concave cover is welded to one side of the hinge, a bolt is welded to the opposite side of the hinge, and the bolt is inserted from the front side to the back side of the concave cover. The antitheft device for a portable engine working machine according to claim 1, 2, 3 or 4, wherein the nut is fixed on the back side of the concave cover.   The same key is used as a key for unlocking the lock of the door and a key for unlocking a lock mechanism for locking the closed state of the recess cover. 5. The antitheft device for a portable engine working machine according to 5.   The key for unlocking the door and the key for unlocking the lock mechanism for locking the closed state of the recess cover are different keys. 5. The antitheft device for a portable engine working machine according to 5.

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