JP3690736B2 - Low lift truck - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a low lift truck, and in particular, can easily perform wiring work of wiring arranged in a battery case, and can prevent erroneous connection of the wiring. An opening for wiring work and a lid for opening and closing the opening can be omitted from the battery case that houses the connection device, and the workability of assembling the charging device and the connection device into the battery case can be reduced. It relates to a low lift truck that can be raised.
[0002]
[Prior art]
The low lift truck is equipped with a battery as a drive energy source for running the aircraft and raising and lowering the fork, and further equipped with a charging device connected to the battery and a connecting device for connecting the charging device to an external power source. Things are already on the market.
[0003]
For example, as shown in the side view of FIG. 5, the traveling device 101, the battery case 102 that is disposed on the rear side of the traveling device 101 and supported by the traveling device 101 so as to be movable up and down, and is fixed to the lower portion of the battery case 102. A fork 103, a handle 104 supported on an upper portion of the traveling device 101 so as to be able to move up and down and horizontally rotatable, and a control panel 105 provided at a tip portion of the handle 104. There is a commercially available low lift truck that contains a battery 106, a charging device 107 connected to the battery 106, and a connecting device 108 for connecting the charging device 107 to an external power source.
[0004]
The purpose of housing the battery 106, the charging device 107, and the connection device 108 in the battery case 102 is to prevent collision with other objects during cargo handling work, to reduce the size and size of the electrical wiring, and to beautify the appearance. The battery 107 to be frequently inspected is located in the upper part of the battery case 102, the heavy charging device 107 is located in the lower part of the battery case 102, and the connecting device 108 facilitates connection and control operations with an external power source. In order to do so, the battery case 102 is assembled to the upper part.
[0005]
The charging device 107 and the connecting device 108 are individually assembled in the battery case 102. After these are assembled, a hand is put into the battery case 102 from the opening 109 for wiring work formed in the battery case 102. Thus, the wiring work for connecting the charging device 107 and the connecting device 108 and the wiring work for connecting the battery 106 and the charging device 107 are performed. Then, after these wiring operations are completed, the opening 109 is closed with a lid 110.
[0006]
The upper surface of the battery case 102 is fully open, and the opening can be opened and closed by an upper lid 111 pivotally supported on, for example, a rear wall of the battery case 102 via a hinge.
[0007]
In addition, the opening 109 is formed on the side surface of the battery case 102 so that wiring can be inspected, repaired, and exchanged at any time. It can be attached and detached while on the board.
[0008]
[Problems to be solved by the invention]
As described above, in the conventional low lift truck, the charging device 107 and the connecting device 108 are separately assembled in the battery case 102, and then a hand is put into the battery case 102 from the narrow opening 109 to perform wiring work. Therefore, it is disadvantageous in improving the workability of the wiring work, and there is a problem that erroneous connection is likely to occur.
[0009]
In addition, an opening 109 dedicated to wiring work is formed on the side surface of the battery case 102, and a lid 110 is provided to close the opening 109, so that the number of parts is large.
There is a problem that it is disadvantageous for cost reduction, and it is also disadvantageous for beautifying the appearance.
[0010]
Furthermore, since the charging device 107 and the connecting device 108 are separately assembled in the battery case 102, the assembling work of the charging device 107 and the connecting device 108 is complicated, which is disadvantageous in improving the workability of these assembling operations. is there.
[0011]
The present invention solves these problems of the prior art, makes it possible to easily perform wiring work of wiring incorporated in a battery case, and prevents erroneous connection of the wiring. And an opening for wiring work and a lid for opening and closing the opening can be omitted from the battery case that houses the connecting device, and the workability of the assembling work of the charging device and the connecting device into the battery case can be omitted. The purpose is to provide a low lift truck that can increase the load .
[0012]
[Means for Solving the Problems]
A low lift truck according to the present invention includes a traveling device, a battery case disposed on the rear side of the traveling device, a fork fixed to a lower portion of the battery case, and a undulating and horizontal upper portion of the traveling device. The battery case includes a battery, a charging device including a transformer connected to the battery, and a connection device including a plug for connecting the charging device to an external power source. In order to achieve the above object, the following technical means are employed in the low lift truck .
[0013]
That is, the low lift truck of the present invention forms the charging unit by assembling the charging device and the connecting device together on a common bracket with a space therebetween, and the inside of the battery case is divided into two spaces on the left and right. The battery is divided into one space and the charging unit is housed in the other space, and the charging unit is housed in the battery case so that the connecting device is located above the charging device. Further, the battery case is characterized in that an opening / closing lid for opening and closing the upper part of the battery and the charging unit is formed. Adopt technical means.
[0014]
According to the present invention, since this charging unit is assembled in advance as an integrated object outside the vehicle body, when the charging unit is assembled in advance as an integrated object outside the vehicle body, the charging device and the connecting device are in a widely open space. As a result, it is possible to assemble at least a part of the wiring for electrically connecting the charging unit and the wiring for connecting the charging device and the battery to the charging unit.
[0015]
In particular, when wirings to be wired in the battery case are assembled to the charging unit before the charging unit is inserted into the vehicle body, for example, the battery case of the vehicle body, these wirings are wired in the battery case. The effect that wiring work becomes unnecessary is obtained.
[0016]
In addition, according to the present invention, a charging unit is formed by connecting the charging device and the connecting device with the connecting member, and the charging device and the connecting device are used as an integral charging unit all at once, for example, a battery case of the vehicle body. Since it is built in, an effect that the assembling work can be simplified is also obtained.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
A low lift truck to which an embodiment of the present invention is applied will be described in detail with reference to the drawings.
[0018]
FIG. 1 is a side view of a low lift truck according to an embodiment of the present invention. The low lift truck shown in FIG. 1 is disposed on a traveling device 1 and on the rear side thereof and can be moved up and down on the traveling device 1. The battery case 2 supported by the battery case 2, the fork 3 fixed to the lower side of the battery case 2, and the steering handle 4 connected to the upper part of the traveling device 1 so as to be able to swing up and down and 180 ° horizontally. And a control panel 5 assembled at the tip of the steering handle 4.
[0019]
Among these, since the traveling device 1, the fork 3, the steering handle 4 and the control panel 5 are not directly related to the present invention, detailed description thereof will be omitted.
[0020]
The battery case 2 is supported by the traveling device 2 so as to be movable up and down within a predetermined range, and is moved up and down by a lifting drive device 7 provided in the traveling device 1. Further, the upper surface of the battery case 2 is fully opened and is opened and closed by an upper lid 8 pivotally supported on the upper rear wall of the battery case 2.
[0021]
FIG. 2 is a plan view of a low lift truck according to an embodiment of the present invention. In this plan view, the steering handle 4 and the upper lid 8 are omitted. As shown in FIG. 2, the internal space 22 of the battery case 2 is divided into two spaces, a battery space 22a and a charging space 22b, arranged side by side. The battery 9 is stored in the battery space 22a and charged. The charging unit 10 described below is accommodated in the space 22b.
[0022]
However, even if these two spaces are partitioned, it is only necessary to partition them conceptually, and it is not necessary to provide a partition that partitions these two spaces.
[0023]
FIG. 3 is a side view of the charging unit 10, and FIG. 4 is a front view of the charging unit. As shown in FIGS. 3 and 4, the charging unit 10 connects the charging device 11 electrically connected to the battery 9 and the connecting device 12 for connecting the charging device 11 to an external power source. And four connecting members 13 made of angle members.
[0024]
The positional relationship between the charging device 11 and the connecting device 12 is not particularly limited, but in this embodiment, the charging device 11 is arranged on the lower side to lower the center of gravity of the charging unit 10 or the low lift truck. By disposing the connecting device 12 so as to be positioned in the upper part in the battery case 2, it is possible to easily control the charging device 11 by connecting external wiring and operating the connecting device 12.
[0025]
Further, by providing an appropriate space between the charging device 11 and the connecting device 12, the heat generated by the charging device 11 can be efficiently dissipated, and the charging device 11 that is heavy for lowering the center of gravity can be used as much as possible in the battery case 2. In order to make the charging device 12 easy to see, a display for indicating a charging state provided in the connection device 12 with the upper lid 8 opened, a display showing an operation method, etc. 2 so that it can be located at a high position within the range.
[0026]
The charging device 11 includes a transformer 14 having a core 14a, a primary coil 14b and a secondary coil 14c, and a rectifier 15 constituting a single-phase double-wave rectifier circuit having a metal plate 15a and a diode 15b, for example. Is assembled integrally with the connecting member 13 by fastening the lower part of the connecting member 13 which forms a pair with the bolts 16 to the left and right end surfaces of the core 14a before assembling in the battery case 2.
[0027]
A horizontal frame 17 is fastened to the upper and lower sides of both end surfaces of the core 14a together with the connecting member 13, and the metal of the rectifier 15 is placed on the horizontal frame 17 disposed on the upper right end surface of the core 14a. The plate 15 a is fixed so as to be electrically insulated by a pair of insulation terminals 18. As a result, the negative electrode of the secondary coil 14 c and the metal plate 15 a of the rectifier 15 are electrically connected, and the transformer 14, the connecting member 13, and the horizontal frame 17 are assembled together.
[0028]
After the connecting member 13, the transformer 14, the rectifier 15 and the horizontal frame 17 are assembled, the diode 15b of the rectifier 15 is connected to the anti-earth pole, for example, the positive pole of the secondary coil 14c of the transformer 14.
[0029]
In this embodiment, a silicon rectifier that can handle a large capacity and is inexpensive is used as the rectifier 15, but other metal rectifiers such as a selenium rectifier and a germanium rectifier, or a semiconductor rectifier may be used. It is possible to use a rectifying vacuum tube.
[0030]
The metal plate 15a is connected to a wiring (charging line) connected to the plus electrode.
[0031]
By the way, in this embodiment, if necessary, another horizontal frame 20 for connecting the upper ends of the connecting members 13 constituting the front and rear pair assembled on the right side of the core 14a and the left front of the core 14a are assembled. An auxiliary frame 21 fixed to the upper end of the connecting member 13 is provided, and the connecting device 12 is assembled to the connecting member 13 through the horizontal frame 20 and the auxiliary frame 21.
[0032]
As shown in FIG. 4, the connecting device 12 includes a charger panel 12a formed in a "h" shape with horizontal flanges provided at the left and right ends when viewed from the front. As shown in FIG. 3, the charger panel 12a A plug 12b for connecting an external power source, an operation panel 12c with a built-in microcomputer, and the like are arranged on the upper side surface, and a socket 12d for connecting the primary coil 14b of the transformer 14 is arranged on the lower side surface.
[0033]
Then, after the connecting device 12 is assembled to the connecting member 13, the wiring derived from the primary coil 14b of the transformer 14 is inserted into the socket 12d provided on the lower side of the charger panel 12a. Is completed.
[0034]
The plug 12b is covered with a cover (not shown) in order to prevent intrusion of dust when not in use, if necessary.
[0035]
The charging unit 10 is inserted into a predetermined height in the battery case 2 from the opened upper surface of the battery case 2, and then a pair of connecting members on the front side with a predetermined number of bolts on the front wall of the battery case 2 By calling and fixing 13, the battery case 2 is fixed at a predetermined position.
[0036]
Thus, according to the low lift truck according to this embodiment, the wiring in the charging device 11, that is, the wiring for electrically connecting the transformer 14 and the rectifier 15, and the charging device 11 and the connecting device 12 are electrically connected. After the wiring, that is, the wiring arranged in the battery case 2 is previously wired outside the battery case 2, the charging unit 10 is inserted into the battery case 2 and fixed at a predetermined position. Wiring to be arranged can be wired in a widely open space, and can be easily wired, and incorrect wiring can be prevented by wiring while visually checking.
[0037]
In addition, after the charging unit 10 is fixed at a predetermined position in the battery case 2 and the two wirings for connecting the charging unit 10 and the battery 9 are connected, the charging wiring in the battery case 2 is completed. In addition, since most of the wiring work in the battery case 2 is not required, the battery case 2 does not need a wiring work opening or a lid for opening and closing the opening, and the wiring work opening and By omitting the lid that opens and closes the opening, the number of parts can be reduced and the cost can be reduced.
[0038]
Furthermore, according to this embodiment, since the battery space 21a and the charger space 21b are arranged so as not to overlap in a plan view, when the upper lid 8 that opens and closes the upper surface of the battery case 2 is opened, Without being obstructed by the battery 9, the charging unit 10 can be easily suspended as a single unit at a predetermined position in the battery case 2. Then, with the charging unit 10 suspended from the predetermined position, the charging unit 10 and the connecting apparatus 12 can be easily and quickly connected to the battery by simply bolting the charging unit 10 to the predetermined position. It can be assembled in the case 12.
[0039]
In addition, as shown in FIG. 2, the internal space 21 of the battery case 2 is divided into two spaces, a battery space 21 a that houses the battery 9 and a charger space 21 b that houses the charging unit 10. This also helps to simplify the wiring between the battery 9 and the charging unit 10.
[0040]
In addition, the voltage of the power supply connected to the primary coil 14b via the connecting device 12 is not particularly limited, and may be 90V, 100V, or 110V, for example.
[0041]
【The invention's effect】
As described above, the lift truck of the present invention forms a charging unit by previously connecting the charging device and the connecting device with a connecting member outside the battery case, and the charging unit is integrated into the battery case. Therefore, according to the present invention, a battery case such as a wiring for electrically connecting the charging device and the connecting device and a wiring for connecting the charging device and the battery when the charging unit is assembled in advance as one unit outside the battery case. The effect | action that the wiring arrange | positioned in the inside can be assembled | attached to the said charging unit can be acquired. Therefore, by performing these wirings in a widely open space before the battery case and the connection device are assembled in the battery case, these wiring operations can be facilitated, and the workability of the wiring operations can be improved. In addition, it is possible to obtain an effect that erroneous connection can be prevented by wiring while confirming with eyes.
[0042]
In addition, when these wirings are assembled to the charging unit before assembling the charging unit into the battery case, there is an effect that the wiring work for connecting these wirings in the battery case becomes almost unnecessary. There is no need to provide an opening for wiring work and a lid for opening and closing the opening, and omitting these openings and lids can reduce the number of parts and reduce costs. As well as being obtained, it is possible to obtain an effect that the aesthetic appearance is enhanced.
[0043]
Furthermore, according to this invention, the charging unit which connected the charging device and the connection apparatus with the connection member is provided, and it can be integrated in a battery case as an integral charging unit provided with the charging device, the connection device, and the connection member. For example, the charging device and the connecting device can be easily and quickly connected to the battery case by hanging the charging unit at a predetermined position in the battery case and fixing the charging unit to the battery case with a bolt. It can be assembled into a case, and the effect of improving the workability of the work of assembling these charging device and connection device into the battery case can be obtained.
[Brief description of the drawings]
FIG. 1 is a side view of the present invention.
FIG. 2 is a plan view of the present invention.
FIG. 3 is a side view of the charging unit of the present invention.
FIG. 4 is a rear view of the charging unit of the present invention.
FIG. 5 is a side view of a conventional example.
[Explanation of symbols]
2 Battery case 9 Battery 10 Charging unit 11 Charging device 12 Connecting device 13 Connecting member 21 Internal space 21a Battery space 22b Charging space

Claims (1)

A traveling device; a battery case disposed on the rear side of the traveling device; a fork fixed to a lower portion of the battery case; and a handle supported on the upper portion of the traveling device so as to be able to undulate and rotate horizontally. A low lift truck that includes a battery, a charging device including a transformer connected to the battery, and a connecting device including a plug for connecting the charging device to an external power source. And the connecting device are integrally assembled on a common bracket to form a charging unit, and the inside of the battery case is divided into two left and right spaces, and the battery is placed in one space and the other The charging units are respectively stored in spaces, and the charging unit is arranged so that the connecting device is located above the charging device. Serial housed in a battery case, a low lift truck, characterized in that further to form a lid for opening and closing the top of the battery and the charging unit to the battery case.

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