JP2001055049A - Battery stopper device and industrial vehicle with battery stopper device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an effective battery stopper device for preventing the coming-off of a battery case and improving the maintenance of a battery and an industrial vehicle with the battery stopper device. SOLUTION: A stopper shaft 11 of a battery stopper device contains a recessed portion 11a which is formed by cutting the side face of a columnar portion of the shaft. The axial width t1 of the recessed portion 11a is greater than the plate thickness t3 of a rear plate 2a of a battery case 2 so that the end face of the rear plate 2a is engageable with the recessed portion 22a. Therefore, when the battery case 2 is displaced (slipped) to an arrow 31 and is about to fall outside a vehicle, the end face of the rear plate 2a is fitted into the recessed portion 11a as shown in double dot-chain lines to restrict further displacement (slip) of the battery case 2. This results in the battery case 2 to be positively fixed to the stopper shaft 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery stopper provided for restricting the movement of a battery case (a case in which a large number of batteries are stored and fixed) mounted on a vehicle body of an industrial vehicle such as a forklift. Related to the device.

[0002]

2. Description of the Related Art As shown in FIG. 6, a general battery type forklift using a battery as a driving source has a battery storage chamber 103 for mounting a battery case 102 at a substantially central portion of a vehicle body. The battery storage chamber 103 is formed in a substantially rectangular box shape by a frame 105, and the upper surface side is opened as a carry-in / out port of the battery case 102. Then, the battery case 102 is suspended by a hoisting device such as a crane or a hoist or another forklift, and the battery storage chamber 1 is opened from the upper opening.
03. In FIG. 6, reference numeral 109 denotes a counterweight mounted on the rear part of the vehicle body.

[0003] Such a type of battery storage chamber 103
In the case of, when the forklift rides on a foreign object while traveling, or when the battery case 102 vibrates with respect to the frame due to a bad road surface condition, the battery case 10
2 may escape from the battery storage room 103 to the outside of the vehicle. Therefore, the battery stopper device 110 is provided to prevent the battery case 102 from coming off. As shown, the battery stopper device 110 is provided on the rear frame 105 and a cylindrical stopper shaft 111 (a protruding length t101 of the rear frame 105 toward the front side), and a part of the stopper shaft 111 is inserted and fixed. It is constituted by a circular stopper hole 107 (retaining). When the battery case 102 tries to escape from the battery storage chamber 103, the stopper shaft 1
When the battery 11 contacts the rear plate 102 a of the battery case 102, the battery case 102 can be prevented from falling out of the battery storage chamber 103.
The battery 101 housed and disposed in the battery case 102 is fixed to the battery case 102, and is covered by a battery hood (not shown) placed on the upper surface of the battery case 102. Is prevented from getting out of the vehicle. The arrow FR in the figure indicates the front of the vehicle, and the arrow UP indicates the upper part of the vehicle.

[0004]

In the conventional battery stopper device 110 described above, the stopper shaft 111 is
The length is formed so that the battery case 102 does not come out of the battery storage chamber 103 (the stopper shaft 111 does not come off the rear plate 102a even if the battery case 102 is shifted sideways). However, such a battery device 110 has a problem that if the stopper shaft 111 is too long, the stopper shaft 111 is located on the upper surface side of the battery 101, and the workability during maintenance of the battery 101 is reduced. However, if the projecting length t101 of the stopper shaft 111 is shortened with emphasis on workability, there is a problem that the original purpose of preventing the battery case 102 from coming off cannot be achieved.

The present invention has been made in view of the above-mentioned conventional problems, and has as its object to provide a battery stopper device which is effective in preventing the battery case from coming off and improving the maintainability of the battery. And an industrial vehicle provided with the battery stopper device.

In order to solve the above problem, a battery stopper device according to the present invention is configured as described in claim 1. Here, the terms described in claim 1, other claims and the detailed description of the invention are interpreted as follows. (1) In the “engagement”, other than the form in which one member (battery case) fits into the concave portion of the other member (stopper shaft), the case where one member contacts the convex portion of the other member, etc. Including. (2) The "industrial vehicle" is a vehicle including a battery and a battery case for housing the battery, and includes a towing tractor, a shovel loader, and the like in addition to a forklift.

According to the battery stopper device of the first aspect, since the concave or convex portion of the stopper shaft protruding into the battery storage chamber is configured to engage with the battery case, for example, when the forklift is running. If the battery case tries to move due to foreign objects riding on it, or the battery case vibrating relative to the frame due to poor road surface conditions, the concave or convex portion of the stopper shaft engages with the battery case. Thus, the movement of the battery case can be reliably restricted. Here, the concave portion or the convex portion is
Not only is the stopper shaft extending linearly provided with a notch or a protrusion, but also the stopper shaft itself is an “L-shaped”,
It may be configured to be bent such as “U-shaped”. Moreover, you may comprise in a "key type". Further, with such a configuration, the length of the stopper shaft can be shortened as compared with a conventional stopper shaft having no concave portion or convex portion in the protruding portion. Therefore, when performing maintenance on the battery disposed near the stopper shaft of the conventional type, the stopper shaft sometimes hindered the work. However, since the length of the stopper shaft was shortened, the battery was mounted on the battery case. The maintainability of the battery can be improved.

[0008] The battery stopper device of the present invention includes:
It is configured as described in claim 2. With the use of the battery stopper device according to claim 2, when the battery case mounted in the battery storage chamber tries to escape from the battery storage chamber, a concave or convex portion of the stopper shaft attached to the battery storage chamber side. Since the movement of the battery case is regulated by this, it is possible to reliably prevent the battery case from slipping out of the vehicle.

Further, an industrial vehicle provided with the battery stopper device of the present invention is configured as described in claim 3. By using the industrial vehicle provided with the battery stopper device according to the third aspect, it is possible to reliably prevent the battery case from coming out of the battery storage chamber, and furthermore, it is possible to prevent the stopper shaft from being moved as compared with the conventional battery stopper device. An industrial vehicle with a reduced length and improved maintainability can be realized.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention (first embodiment)
And the second embodiment) will be described based on the drawings. FIG. 1 is a perspective view showing a usage form of the battery stopper device according to the first embodiment, FIG. 2 is an enlarged perspective view of the battery stopper device, and FIG. 3 is a longitudinal sectional view of FIG. FIG. 4 is an enlarged perspective view of the battery stopper device according to the second embodiment, and FIG. 5 is a longitudinal sectional view of FIG. The arrow FR in the figure indicates the front of the vehicle, and the arrow UP indicates the upper part of the vehicle.

[First Embodiment] A battery stopper device 10 according to a first embodiment, as shown in FIG.
The present invention is applied to a battery type forklift having a battery storage chamber 3 of a type whose upper surface is opened as a battery loading / unloading port. As shown, a large number of batteries 1
Is mounted in a box-shaped battery storage room 3 which is set at a substantially middle position in the vehicle front-rear direction and whose upper surface is opened as a battery carrying-in / out port. The battery storage chamber 3 is made of an iron plate frame, that is, side frames 4 forming left and right wall plates, front and rear frames 5 forming front and rear wall plates (a front frame is not shown), and an under frame forming a bottom plate. 6. In each of the frames, the side frame 4 and the front frame are set to be shorter than the battery case 2, but the rear frame 5 is set to be higher than the battery case 2, and Is provided with a battery stopper device 10 for preventing the battery case 2 from coming off.

As shown in FIG. 2, the battery stopper device 10 has a substantially cylindrical stopper shaft 11 that can be fitted into a stopper hole 7 formed in the rear frame 5. The stopper shaft 11 is provided with two connecting pieces 11 b, each of which is formed in a shape corresponding to the connecting groove 7 a formed in the stopper hole 7. Therefore,
After the connecting piece 11b of the stopper shaft 11 is aligned with the connecting groove 7a, the rear frame 5 is sandwiched between the two connecting pieces 11b by rotating the stopper shaft 11 in the direction of arrow 30 in FIG. (Engaged), stopper shaft 1
1 and the rear frame 5 can be connected.

The stopper shaft 11 has a connecting piece 11b.
On the opposite side, a concave portion 11a formed by cutting out a side surface of, for example, a cylindrical shaft portion is provided. Recess 11a
Is wider than the thickness t3 of the rear plate 2a of the battery case 2, and the end face of the rear plate 2a can engage (fit) with the recess 11a. Therefore, for example, the battery case 2 moves in the direction of the arrow 31 in FIG. 3), the end face of the rear plate 2a is recessed 11a as shown by the two-dot chain line in FIG.
, And further movement (lateral displacement) of the battery case 2 is regulated. Therefore, the battery case 2 can be securely fixed to the stopper shaft 11.

As shown in FIG. 3, the stopper shaft 11
The length t2 projecting to the front side of the rear frame 5 when the rear frame 5 is attached to the rear frame 5 may be a length that can form the concave portion 11a that can be fitted to the upper end of the rear plate 2a. Therefore, the protrusion length t2 of the stopper shaft 11 can be made shorter than the protrusion length of the stopper shaft 111 of the conventional type (t101 in FIG. 6), and the battery 1 in the battery case 2
Since the stopper shaft 11 is less likely to interfere with the maintenance of the battery 1 individually, the maintainability of the battery 1 can be improved.

According to the battery stopper device 10 of the first embodiment configured as described above, the rear frame 5
The stopper shaft 11 fixed to the stopper hole 7 has a concave portion 11a that can engage (fit) with the upper end of the rear plate 2a. The movement is suppressed (restricted) by the concave portion 11a of the stopper shaft 11 fitted to the upper end of the rear plate 2a.
Is prevented from getting out of the vehicle.

In the present embodiment, since the connecting piece 11b is employed as a means for fixing the stopper shaft 11,
The stopper shaft 11 can be easily fixed simply by inserting and rotating the stopper shaft 11 into the stopper hole 7, and the stopper shaft 11 can be easily removed. For this reason, the attachment / detachment operation of the stopper shaft 11 performed at the time of battery replacement can be simplified as compared with the related art. Also, the connecting piece 1 is attached to the stopper shaft 11.
By providing 1b (fixing means), it is not necessary to separately provide members necessary for fixing. As a result, the structure is simplified, the material cost is reduced, the manufacturing process and the assembling process are reduced, and the like. This is extremely effective in reducing costs. Note that the shapes of the stopper shaft 11 and the stopper hole 7 are not limited to the columnar shape, and can be variously changed as needed.

[Second Embodiment] Next, a second embodiment of the present invention will be described.
Will be described with reference to FIGS. 4 and 5. FIG. As in the first embodiment, the second embodiment is applied to a battery-type forklift having a battery storage chamber 3 of a type whose upper surface is opened as a battery loading / unloading port. For the sake of simplicity, points different from the first embodiment will be described. That is, the second
This embodiment is different from the first embodiment in the configuration of the stopper shaft.

As shown in FIG. 4, the stopper shaft 21 of the battery stopper device 20 is provided with two connecting pieces 21b similarly to the stopper shaft 11 of the first embodiment. Are also formed in a shape corresponding to the connecting groove 7a formed in the stopper hole 7. A projection 21a is provided on the side of the stopper shaft 21 opposite to the connecting piece 21b. From the protrusion 21a (closer to the protrusion 21a)
The length t4 to the connecting piece 21b is wider than the thickness t3 of the rear plate 2a of the battery case 2, and
The end face of “a” can be fitted into a concave portion 21c formed between the convex portion 21a and the connecting piece 21b. So, for example,
The forklift rides on a foreign object while traveling, or the state of the traveling road surface is poor, and the battery case 2 vibrates with respect to the frame.
When the battery case 2 moves in the direction (lateral displacement), the end face of the rear plate 2a fits into the concave portion 21c and comes into contact with the convex portion 21a as shown by the two-dot chain line in FIG.
Is restricted from further movement (lateral displacement). Therefore, the battery case 2 can be securely fixed to the stopper shaft 21.

As shown in FIG. 5, the stopper shaft 21
The length t5 projecting to the front side of the rear frame 5 when the boss is attached to the rear frame 5 may be a length that can form the convex portion 21a and the concave portion 21c that can be engaged with the upper end of the rear plate 2a. Therefore, the protrusion length t5 of the stopper shaft 21 is changed to the protrusion length of the stopper shaft 111 of the conventional type (t in FIG. 6).
101), the battery case 2
Since the stopper shaft 21 is less likely to interfere with the maintenance of the batteries 1 inside the battery 1, the maintainability of the battery 1 can be improved.

According to the battery stopper device 20 of the second embodiment configured as described above, the rear frame 5
Since the stopper shaft 21 fixed to the stopper hole 7 has the convex portion 21a which can be engaged with the upper end of the rear plate 2a, even if the battery case 2 tries to move in the The protrusions 21a of the stopper shaft 21 that engage with the upper end of the plate 2a are suppressed (restricted), and the battery case 2 is prevented from falling out of the vehicle. Therefore, according to the second embodiment, the same functions and effects as those of the first embodiment can be obtained.

It should be noted that the present invention is not limited to only the above-described embodiment, and various applications and modifications are conceivable. In the first and second embodiments, the recess 11a is formed by cutting out the stopper shaft 11 extending linearly,
In addition, although the convex portion 21a protrudes from the stopper shaft 21, the shape of the concave portion or the convex portion can be variously changed as necessary.
For example, the stopper shaft itself may be configured to be bent such as “L-shape”, “U-shape”, or the like. Further, for example, the stopper shaft side and the rear plate side can be formed in a hook shape in which they engage with each other. With this configuration, it is possible to realize a battery stopper device that can more reliably fix the battery case 2 to the stopper shaft.

In the present embodiment, the connecting piece 1
Although the stopper shaft 11 (or the stopper shaft 21) and the rear frame 5 are connected by engaging the connection groove 1a (or the connection piece 21b) with the connection groove 7a, the stopper shaft 11 (or the stopper shaft 21) is The configuration for connecting the rear frame 5 is not limited, and can be variously changed as needed. Further, the shapes of the stopper shafts 11 and 21 and the stopper hole 7 are not limited to the shapes shown in the drawing, and may be any shape including a circular cross section.

Further, in the present embodiment, the battery stopper devices 10 and 20 are provided on the rear frame 5 of the battery storage chamber 3, but the location of the battery stopper devices 10 and 20 is limited to the rear frame 5. Instead, the front frame may be set as an installation target, or may be the side frame 4 in some cases, as long as the frame has a structure on the front side.

Further, the battery stopper devices 10 and 20 according to the present embodiment are opened by opening the upper surface as a battery carrying-in / out port, and the battery is replaced by a hoisting device such as a crane or a hoist or another forklift. Although the description has been given of the case where the present invention is applied to a forklift having a battery storage room 3 of the type performed, the present invention is also applicable to a forklift having a roll-out type battery storage room in which battery replacement is performed by moving horizontally from the side of the vehicle body. Good.

Although the present embodiment has been described in connection with a forklift, other industrial vehicles such as a towing tractor and a shovel loader may be used as long as they are equipped with a battery as a power source. Of course, you can.

[0026]

As described in detail above, according to the battery stopper device of the present invention, the battery case can be more reliably prevented from coming off as compared with the conventional battery stopper device.
A battery stopper device with improved battery maintainability and an industrial vehicle equipped with the battery device can be realized.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a use form of a battery stopper device according to a first embodiment.

FIG. 2 is an enlarged perspective view of the battery stopper device of FIG.

FIG. 3 is a longitudinal sectional view of FIG. 2;

FIG. 4 is an enlarged perspective view of a battery stopper device according to a second embodiment.

FIG. 5 is a longitudinal sectional view of FIG.

FIG. 6 is a perspective view showing a usage form of a conventional battery stopper device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Battery 2 ... Battery case 3 ... Battery storage room 5 ... Rear frame 7 ... Stopper hole 10, 20 ... Battery stopper device 11, 21 ... Stopper shaft 11a ... Concave part 21a ... Convex part

Claims (3)

[Claims] 1. A battery stopper device for fixing a battery case mounted in a battery storage room of a vehicle body to a mounting position, wherein the battery stopper device is provided on the battery storage room side and protrudes into the battery storage room. A battery stopper device comprising a stopper shaft having a concave portion or a convex portion, wherein the concave portion or the convex portion of the stopper shaft engages with the battery case to restrict the movement of the battery case. 2. The battery stopper device according to claim 1, wherein the battery stopper is adapted to restrict the battery case from coming out of the carry-in / out port in a battery storage room whose upper surface is opened as a carry-in / out port of the battery case. apparatus. 3. An industrial vehicle provided with the battery stopper device according to claim 1.