JP2011042979A - Rear camera device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rear camera device including an antitheft structure capable of preventing bolts from being detached to separate a rear camera from a construction machine even if all the bolts are exposed and mounted to the upper face of a machine body without covering the bolts in part with an engine cover. <P>SOLUTION: The rear camera device 10 is mounted to the upper face of the machine body to visually confirm the rear of the construction machine. In the rear camera device, when an antitheft member 15 is in an upward attitude in which the upper end face is brought into close contact with the lower face of a cover body 19, a stopper member 25 is located below the antitheft member, but when the antitheft member 15 is in a downward attitude in which the antitheft member 15 is spaced downward from the lower face of the cover body 19 with downward tilting, the stopper member is located above the antitheft member 15. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a rear camera device having an antitheft structure.

  A rear monitoring device for a construction machine is disclosed in Patent Document 1. The rear monitoring device is for preventing the rear camera from being stolen. Therefore, a part of the bolt for fixing the mounting plate to which the camera is attached to the upper surface of the airframe is covered with an engine cover so that the rear camera device (camera unit) cannot be separated.

  However, as a layout of recent construction machines, an engine cover formed away from a counterweight is becoming mainstream. For this reason, the bolt of the rear camera device attached mainly to the upper surface of the counterweight is exposed, and the bolt can be easily removed to separate the rear camera from the airframe.

JP 2006-336361 A

  The present invention is based on the above prior art, and the rear cover is constructed by removing the bolts even if all the bolts are exposed and attached to the top of the fuselage without being covered by the engine cover. An object of the present invention is to provide a rear camera device having an anti-theft structure that cannot be separated from a machine.

  In order to achieve the above object, according to the first aspect of the present invention, in the rear camera device mounted on the upper surface of the machine body for visually recognizing the rear of the construction machine, the camera main body and the camera body fixed to the upper surface thereof A plate, a holding member projecting downward from the mounting plate, and a cover module mounted on the upper surface of the machine body, the cover body covering the upper surface of the machine body and mounting the mounting plate, and the cover A plate-like flooring that is disposed on the lower side of the main body and secures a bolt fastening space between the cover main body and the cover main body is formed by cutting the cover main body, and the mounting plate is unidirectionally arranged on the cover main body. A guide groove that allows the holding member to be introduced into the bolt fastening space, and is protruded from the floor material when placed on the cover body. An anti-theft member which is held in the bolt fastening space together with the holding member and which can be tilted up and down with respect to the holding member. An antitheft member including an attached base part and a cylindrical part standing from the base part and having a screw hole formed therein, and with the tilting upward of the base part When the anti-theft member is in a raised posture with the upper end surface of the cylindrical portion in close contact with the lower surface of the cover body, the stopper member is positioned below the anti-theft member, The anti-theft member is positioned above the anti-theft member when the anti-theft member is in a lowered posture with the upper end surface of the cylindrical part spaced downward from the lower surface of the cover body with a downward tilt. The above Bolts that pass through the mounting plate and the cover main body are screwed into the screw holes of the cylindrical portion when in the ascending posture in the sliding direction rearward of the upper member, so that the bolts are attached to the mounting plate and the cover main body. Provided is a rear camera device that is fastened.

In the invention of claim 2, in the invention of claim 1, the holding member is an L-shaped member having a substantially L-shaped cross section, and the base portion of the antitheft member is an insertion hole through which the L-shaped member is inserted. And is latched so as to be tiltable in the vertical direction at the bent portion of the L-shaped member.
The invention of claim 3 is characterized in that, in the invention of claim 1 or 2, the anti-theft member is provided in plural, and the anti-theft member, the mounting plate and the cover body are bolted at a plurality of locations. .

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the anti-theft member corresponds to first and second bolt holes formed on the innermost side of the mounting plate and the cover body. The stopper member is formed nearer to the front side than the position of the anti-theft member, and is arranged to be bolted together with the mounting plate and the cover main body.

  According to the first aspect of the present invention, when the holding member is slid along the guide groove and the anti-theft member is brought into close contact with the lower surface of the cover body, the stopper member is disposed below the anti-theft member. Therefore, when the anti-theft member slides along the guide groove, the anti-theft member exceeds the stopper member and is disposed rearward in the sliding direction. The antitheft member is attached to the holding member so as to be tiltable. Therefore, even if the bolt is removed together with the mounting plate and the cover main body, the anti-theft member remains attached to the holding member, and is tilted by its weight to assume a lowered posture. Even if the holding member is slid along the guide groove in this lowered posture and the mounting plate to which the camera body is fixed is taken out, the anti-theft member cannot contact the stopper member and take out. Thereby, it is possible to reliably prevent the camera body of the rear camera from being removed and stolen from the construction machine by releasing the bolt fastening.

  According to the invention of claim 2, the holding member is an L-shaped member having a substantially L-shaped cross section, and the L-shaped member is inserted into the insertion hole provided in the base portion of the anti-theft member. Thereby, the anti-theft member is tiltably locked at the bent portion of the L-shaped member. Therefore, when the anti-theft member is in the lowered position, it is possible to prevent the cover body from being removed by contacting the stopper member, so that the rear camera can be prevented from being stolen with a simple structure.

  According to the invention of claim 3, since the plurality of anti-theft members are bolted to the mounting plate and the cover main body, it is possible to reliably prevent the mounting plate from being removed from the cover main body and to improve the anti-theft performance. it can.

  According to the invention of claim 4, the anti-theft member is disposed at a position corresponding to the first and second bolt holes formed on the innermost side of the mounting plate and the cover main body, together with the mounting plate and the cover main body. It is bolted. The stopper member is also formed in the vicinity of the antitheft member. For this reason, even if the anti-theft member is lifted to exceed the stopper member and the mounting plate is to be removed, it is necessary to insert the hand from the front side opening of the bolt fastening space, which is troublesome and cumbersome. it can. Therefore, it takes a predetermined time to remove the mounting plate to which the camera body is mounted, and the antitheft can be improved.

It is a top view of the construction machine provided with the rear camera device concerning the present invention. It is a side view of a construction machine provided with a rear camera device according to the present invention. It is a disassembled perspective view of the rear camera apparatus which concerns on this invention. It is component explanatory drawing of a mounting plate periphery. It is the schematic of a cover module. It is a front view of the rear camera device according to the present invention. It is a side view of the rear camera device concerning the present invention. It is the schematic when the antitheft mechanism of the rear camera device concerning the present invention works. It is the schematic when the antitheft mechanism of the rear camera device concerning the present invention works. It is the schematic when the antitheft mechanism of the rear camera device concerning the present invention works.

FIG. 1 is a plan view of a construction machine provided with a rear camera device according to the present invention, and FIG. 2 is a side view.
As shown in the drawing, a construction machine 1 made of, for example, a hydraulic excavator includes a lower traveling body 2, and an upper swing body 3 is turnably provided on the lower traveling body 2. The upper swing body 3 is provided with a cab 4 on the left side of the front part, and a boom 5 extends from the center thereof. The boom 5 is raised and lowered by expanding and contracting a pair of boom cylinders 6 disposed at predetermined positions on both sides thereof. An arm 7 is disposed at the tip of the boom 5, and a bucket 8 is attached to the tip of the arm 7. The arm 7 and the bucket 8 are also operated in response to expansion and contraction of the arm cylinder and the bucket cylinder. The 9, in order to perform maintenance work such as inspection and repair of the engine of the construction machine 1 and other various equipment, an operator or the like on the machine body, specifically on the engine building or fuel tank of the upper swing body 3 It is a non-slip plate for preventing the operator's feet from slipping when climbing up.

  A rear camera device 10 is attached to the upper surface of the upper swing body 3 on the rear side. More specifically, it is attached to the upper surface of the counterweight 11. The rear camera device 10 is for a worker working in the cab 4 to visually recognize the rear of the machine body. In the self-propelled construction machine 1, work safety is achieved by improving the rear visibility in this way.

FIG. 3 is an exploded perspective view of the rear camera apparatus according to the present invention. FIG. 4 is an explanatory diagram of parts around the mounting plate, and FIG. 5 is a schematic view of the cover module.
As illustrated, the rear camera apparatus 10 according to the present invention includes a camera body 12, a mounting plate 13, a cover module 14, and an antitheft member 15. The camera body 12 is fixed to the upper side of the mounting plate 13 with bolts or the like (not shown) from the lower surface side of the mounting plate 13. The mounting plate 13 has a plate-like plate body 18. An L-shaped member (holding member) 16 having a substantially L-shaped cross section protrudes below the plate body 18. The L-shaped member 16 includes a hanging portion 16a extending from the lower surface of the plate body 18, and a flange portion 16b that is bent from the hanging portion 16a and extends in the lateral direction. A plurality of (four in the figure) first bolt holes 17 for fixing to the cover module 14 are formed in the plate body 18.

  The cover module 14 has a cover main body 19 that serves as an upper cover of the counterweight 11. In the cover body 19, second bolt holes 20 are formed corresponding to the first bolt holes 17 formed in the plate body 18. Corresponding to the second bolt hole 20, a back nut 22 is formed below the mounting surface of the plate body 18. In addition, when fixing the plate main body 18 and the cover main body 19 by bolting, you may fix using a normal nut. The cover body 19 is formed with a guide groove 21 that is linearly cut from the front side (front of the machine body) to the back side (back of the machine body). A bolt fastening space 23 is formed on the lower side of the cover body 19, and the lower side is covered with a plate-like flooring 24. The bolt fastening space 23 is entirely surrounded except for the opening surface on the front side. A stopper member 25 is erected on the floor material 24.

  The anti-theft member 15 includes a base portion 15a and a cylindrical portion 15b. The base portion 15 a is formed with an insertion hole 26 through which the L-shaped member 16 can be inserted. The cylindrical portion 15b is erected from the base portion 15a, and a screw hole 27 is formed inside. Bolts 28 for fixing the mounting plate 13 and the cover module 14 described above are screwed into the screw holes 27, and these are fixed integrally. That is, the cylindrical portion 15 b is a back nut for the bolt 28.

  The rear camera device 10 having the above-described configuration first slides the L-shaped member 16 along the guide groove 21 in a state where the cover body 19 of the cover module 14 is welded as the upper cover of the counterweight 11. At this time, the anti-theft member 15 is in a state where the L-shaped member 16 is inserted through the insertion hole 26 and is tilted up and down. When the L-shaped member 16 is slid, there is a stopper member 25 on the lower side where the anti-theft member 15 moves. Therefore, the upper surface of the anti-theft member 15 is brought into contact with the lower surface of the cover body 19 so as not to hit this. When the L-shaped member 16 is slid to the predetermined position of the guide groove 21 with the anti-theft member 15 in the raised posture in close contact with the lower surface of the cover body, the first bolt hole 17 and the second bolt hole 20 and the screw hole 27 are aligned and a bolt 28 is screwed. The other first bolt holes 17 and second bolt holes 20 are fixed by bolting.

FIG. 6 is a front view of the rear camera apparatus according to the present invention, and FIG. 7 is a side view.
As shown in the drawing, when the rear camera device 10 is attached to the upper surface of the machine body (counterweight 11), the mounting plate 13 and the cover module 14 are fixed by a plurality of bolts 28 (four bolts 28 in the figure). . The anti-theft member 15 is fixed to one place among them. At this time, the antitheft member 15 is locked to the L-shaped member 16. The rear camera device 10 according to the present invention is attached to the upper surface of the body in such a state.

8 to 10 are schematic views when the anti-theft mechanism of the rear camera device according to the present invention is operated.
As shown in FIG. 8, even if all the bolts 28 are removed and the camera body 12 is to be removed, the anti-theft member 15 is caught by the stopper member 25, and the mounting plate 13 to which the camera body 12 is fixed cannot be removed. Specifically, when the bolt 28 (see FIG. 6) that fixes the anti-theft member 15 is removed, the anti-theft member 15 falls in the bolt fastening space 23 while being locked to the L-shaped member 16, and descends. It becomes. In this state, even if the L-shaped member 16 is slid along the guide groove 21 (see FIG. 3), the anti-theft member 15 comes into contact with the stopper member 25 and the mounting plate 13 cannot be pulled out. Thereby, the anti-theft property of the camera body 12 is enhanced.

  FIG. 9 shows a state in which the camera body 12 is lifted and attempted to be stolen. Even in this case, the cylindrical portion 15b of the anti-theft member 15 is inclined (downward posture) while being engaged with the L-shaped member 16 by its weight, so that the mounting plate 13 is pulled out beyond the stopper member 25. I can't. Therefore, the camera body 12 is not stolen. In order to realize this, the height of the stopper member 25 is substantially close to the lower surface of the base portion 15a when the cylindrical portion 15b of the anti-theft member 15 is brought into contact with the lower surface of the cover body 19. It is preferable to set so as to have a slight gap close to it.

  FIG. 10 shows a state where the theft is attempted by lifting the mounting plate 13 obliquely. Even in this case, the anti-theft member 15 abuts against the stopper member 25 and the attachment plate 13 cannot be slid further along the guide groove 21 and pulled out.

  In order to further improve the antitheft performance described above, a plurality of antitheft members 15 may be attached. In this way, even if one of the anti-theft members 15 exceeds the stopper member 25 by mistake, the other anti-theft member 15 contacts another or the same stopper member and the mounting plate 13 is pulled out. To prevent. The plurality of anti-theft members 15 may be attached from the front side to the back side (in the front-rear direction), or may be attached to both the left and right sides. In this case, the length of the guide groove 21 is adjusted as appropriate.

  Further, if the anti-theft member 15 is attached to the back side (the rear of the machine body) and the stopper member 25 is also formed in the vicinity thereof, the anti-theft member 15 can be lifted by hand to be over the stopper member 25 before the bolt fastening space 23. You have to put your hands in from the side, which can be troublesome and troublesome in the case of theft. Therefore, the antitheft can be further improved. If a plurality of stopper members are formed along the guide groove 21, even if the anti-theft member 15 exceeds the stopper member 25 by mistake, the next stopper member 25 contacts the anti-theft member 15, and as a result It is possible to prevent the mounting plate 13 from being pulled out.

  More preferably, as shown in FIG. 7, the rear camera device 10 according to the present invention is applied to a construction machine having an engine cover 29 above the front side of the mounting plate 13, thereby opening the engine cover. Without it, a hand cannot be inserted into the bolt fastening space 23, so that the anti-theft performance is further improved.

DESCRIPTION OF SYMBOLS 1 Construction machine 2 Lower traveling body 3 Upper revolving body 4 Operator's cab 5 Boom 6 Boom cylinder 7 Arm 8 Bucket 9 Non-slip plate 10 Rear camera device 11 Counterweight 12 Camera body 13 Mounting plate 14 Cover module 15 Anti-theft member 15a Base 15b Cylindrical part 16 L-shaped member (holding member)
16a Suspended portion 16b Hook 17 First bolt hole 18 Plate main body 19 Cover main body 20 Second bolt hole 21 Guide groove 22 Back nut 23 Bolt fastening space 24 Floor material 25 Stopper member 26 Insertion hole 27 Screw hole 28 Bolt 29 Engine cover

Claims (4)

In the attached rear camera device mounted on the upper surface of the fuselage to visually recognize the rear of the construction machine,
The camera body,
A mounting plate having the camera body fixed to the upper surface thereof;
A holding member protruding downward from the mounting plate;
A cover module attached to the upper surface of the aircraft,
A cover body that covers the upper surface of the machine body and on which the mounting plate is placed;
A plate-like flooring disposed below the cover body and securing a bolt fastening space with the cover body;
The cover body is formed by cutting out, and allows the holding member to be introduced into the bolt fastening space when the mounting plate slides in one direction on the cover body and is placed on the cover body. A guide groove,
A cover module including a stopper member protruding from the floor material;
An anti-theft member held at the lower end of the holding member and disposed in the bolt fastening space together with the holding member,
A base portion attached to the holding member so as to be tiltable up and down;
An anti-theft member including a cylindrical portion that is erected from the base portion and has a screw hole formed thereon;
With
When the anti-theft member is in a raised posture with the upper end surface of the cylindrical portion in close contact with the lower surface of the cover body with the upward tilt of the base portion, the stopper member is more than the anti-theft member The anti-theft is positioned when the anti-theft member is in a lowered position with the upper end surface of the cylindrical portion spaced downward from the lower surface of the cover body with the base portion tilting downward. Positioned above the member,
When the anti-theft member is in the raised position behind the stopper member in the sliding direction, a bolt that penetrates the attachment plate and the cover body is screwed into the screw hole of the cylindrical portion, so that the attachment A rear camera device characterized by being bolted to a plate and a cover body. The holding member is an L-shaped member having a substantially L-shaped cross section,
The base portion of the anti-theft member has an insertion hole through which the L-shaped member is inserted,
2. The rear camera device according to claim 1, wherein the rear camera device is held by a bent portion of the L-shaped member so as to be tiltable up and down.   The rear camera device according to claim 1 or 2, wherein a plurality of the anti-theft members are provided, and the anti-theft members, the mounting plate, and the cover main body are bolted at a plurality of locations.   The anti-theft member is disposed at a position corresponding to the first and second bolt holes formed on the innermost side of the mounting plate and the cover body and is bolted together with the mounting plate and the cover body. The rear camera device according to any one of claims 1 to 3, wherein the stopper member is formed nearer to the near side than the position of the anti-theft member.

Images