JPH09208193A - Seal structure of balance weight part in fork lift - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent rainwater from entering a controller chamber from the balance weight side in a fork lift. SOLUTION: A groove 11 extending the parts near both right and left sides of a balance weight 1 is provided on the upper surface of the balance weight 1 in a fork lift, one part of the groove 11 is released outward and provided, and seal members 15 provided on a seal cover 9 of a controller chamber is so provided as to be brought in press contact with the bottom part of the groove 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seal structure between a balance weight in a forklift truck and a seal cover of a controller room accommodating electrical components such as a controller, and a balance weight used in the seal structure. The present invention relates to a balance weight having a seal structure capable of surely preventing rainwater and the like from entering the controller chamber and a tow bar for swinging a tow wire for fastening a tow wire.

[0002]

2. Description of the Related Art As a prior art relating to the present invention, for example, Japanese Patent Laid-Open No. 3-25044 (Prior Art 1) and Japanese Utility Model Laid-Open No. 5-101
71 (Prior example 2).

[0003]

In a forklift, a balance weight provided at the rear of the vehicle is
For example, a controller room for housing electric components such as a controller and a motor is provided, and rainwater or the like is prevented from entering the controller room between the balance weight and the seal cover provided on the upper part of the controller room. A seal structure is provided to do so.

For example, in the above-mentioned first and second examples, a step portion having a rising portion is formed on the upper surface of the balance weight so that the front side (controller chamber side) is lower and the rear side is higher, and the lower surface of the seal cover is formed. The seal member provided on the lower end edge of the attached seal plate is brought into contact with the lower front upper surface of the stepped portion, so that the upper surface of the seal cover and the rear upper upper surface of the stepped portion have substantially the same height. In addition, the seal structure is provided between the balance weight and the seal cover. And, in order to radiate heat in the controller chamber, ventilation holes are provided in the sealing plate.

Therefore, when the amount of rainwater accumulated between the rising portion of the step portion and the seal member increases with the seal cover closed, rainwater may sometimes enter the controller chamber through the ventilation hole. There is also a problem that when the seal cover is opened, rainwater collected between the seal cover member and the rising portion of the step portion may flow into the controller chamber.

[0006]

The present invention has been made in view of the above-mentioned various problems in the balance weight portion of a forklift, and the invention according to claim 1 relates to a balance weight and a controller chamber of a forklift. In the seal structure between the seal cover and the seal cover, a groove extending to the left and right sides of the balance weight is provided on the upper surface of the balance weight, and a part of the groove is opened to the outside to provide a seal provided on the seal cover. The member is provided in contact with the bottom of the groove or the upper surface of the balance weight inside the groove.

According to a second aspect of the present invention, in the first aspect of the invention, the seal member is provided intermittently.

[0008]

According to the first aspect of the present invention, in the seal structure between the balance weight in the forklift truck and the seal cover of the controller chamber, the upper surface of the balance weight is provided with grooves extending to the left and right sides of the balance weight. At the same time, a part of this groove is opened to the outside,
Since the seal member provided on the seal cover is provided in contact with the bottom of the groove or the upper surface of the balance weight inside the groove, even if rainwater or the like flows into the groove of the upper surface of the balance weight, Since it flows out from the open portion provided in the controller, rainwater and the like can be sufficiently prevented from entering the controller chamber by the seal member provided in the seal cover.

Further, since the rainwater which tends to collect in the groove does not overflow from the groove because it flows out from the open portion, even if the seal cover is opened, the controller room is closed. There is no such thing as rainwater flowing into.

According to a second aspect of the present invention, in the first aspect of the invention, since the seal members are provided intermittently, the gap between the seal members can be used as a ventilation part, and the controller can be used. In addition to being able to improve heat dissipation and air permeability in the room, there is no need to rework the ventilation holes, and the cost can be easily reduced.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, a balance weight 1 in a forklift (the entire structure of which is not shown) is integrally fixed to a frame 3 (see FIG. 4) of the forklift via a fixing bolt 5. There is. The frame 3 on the front side of the balance weight 1 is provided with a controller chamber (not shown) accommodating electrical components such as a controller, and the forklift via a hinge member (not shown) above the controller chamber. A seal cover 9 is attached to the upper plate 7 of FIG.

That is, by opening the seal cover 9, maintenance and inspection of electric components and the like in the controller chamber can be performed.

In order to prevent rainwater and the like from entering the controller chamber when the seal cover 9 is closed, the balance weight 1 is provided with grooves 11 extending to the left and right sides near the upper surface thereof. . Both ends 11E of the groove 11 are open to the outside so that rainwater or the like that tends to collect in the groove 11 is discharged to the outside, and the outflow groove 13 communicates with an appropriate position in the middle of the groove 11. There is.

Therefore, rainwater and the like in the groove 11 are
It will flow out from both ends 11E and the outflow groove 13 and will not stay in the groove 11.

In order to prevent rainwater and the like from entering the controller chamber, the groove 11 is formed at a position where the seal cover 9 corresponds to the groove 11, as schematically shown in FIG.
A seal member 15 is provided that abuts the bottom portion 11B of the.
This seal member 15 is provided intermittently (discontinuously) as shown in FIG. 1, and a ventilation part 17 for performing heat dissipation and ventilation in the controller chamber is provided between each seal member 15. is there.

Therefore, when the seal cover 9 is closed, the seal member 15 provided on the seal cover 9 has the bottom portion 11B of the groove 11 provided on the upper surface of the balance weight 1.
In the state where the controller chamber is in contact with, the rainwater and the like are prevented from entering the controller chamber, and the controller chamber is ventilated through the ventilation part 17 between the seal members 15, so that the controller chamber is protected from electrical components. The heat generation prevents the temperature from becoming high.

Rainwater W, etc., which has flowed into the groove 11 is supplied to the groove 1.
Since it flows out from the end portion 11E of 1 and the outflow groove 13, it does not overflow from the groove 11. Therefore, even if the seal cover 9 is opened when the rainwater W is accumulated in the groove 11 to some extent, the rainwater W does not enter the controller chamber.

In the above description, the case where the seal member 15 provided on the seal cover 9 is brought into contact with the bottom portion 11B of the groove 11 has been described.
It is also possible to make contact with the upper surface 1F of the balance weight 1 inside the groove 11. Also in this configuration, rainwater and the like flow along the groove 11 and flow out from the end portion 11E and the outflow groove 13 to the outside, so that the same effect as described above can be obtained.

At the lower left and right central portions of the balance weight 1, a pulling rod (pulling pin) 21 for fastening and pulling a pulling wire 19 (see FIG. 4) is swingable in the front-back direction. It is provided.

More specifically, as shown in FIG. 5, a hinge pin 23 in a direction orthogonal to the axis of the tow bar 21 is integrally formed at the upper end (base end) of the tow bar 21 by welding or the like. It is provided for the purpose.

The tow bar 21 is provided below the mounting portion 27 having a through hole 25 (see FIG. 4) through which the fixing bolt 5 for fixing the balance weight 1 to the frame 3 is formed. A tow rod storage portion 29 that can be stored swingably in the front-rear direction is formed.
A support groove 3 for supporting the hinge pin 23 is provided on the upper part of the reference numeral 9.
1 is formed.

Further, the rear side of the towbar storage portion 29 (see FIG. 4).
On the right side), when the towbar 21 is vertically installed while supporting the hinge pin 23 in the support groove 31,
Upper and lower tow rod support portions 33U and 33L that support the base end portion side and the tip end portion (lower end portion) of the tow rod 21 from the rear side are provided, and between the upper and lower tow rod support portions 33U and 33L. Is provided with a wire insertion hole 35 that allows the wire 19 to be inserted from the rear side so as to penetrate back and forth.

An engaging groove 37 in the front-rear direction is formed in the lower tow rod supporting portion 33U so that the tip end (lower end portion) of the tow rod 21 can be engaged and disengaged in the front-rear direction. 37
The front end portion of the inclined surface 39 is inclined so that the front side becomes lower.
Is formed.

In the above structure, when the tow bar 21 is vertically extended, the loop portion 19L formed at the end of the wire 19 is inserted into the wire insertion hole 35 at the rear side (right side in FIG. 4). ), The pull bar 21 is pushed forward with the loop portion 19L (to the left in FIG. 4), the pull bar 21 tilts downward to the left as shown by an imaginary line in FIG. Then, when the lower end of the towbar 21 gets over the loop portion 19L, the lower end of the towbar 21 enters the loop portion 19L.

As described above, the loop portion 19 of the wire 19
After the lower end of the towbar 21 enters the L, the wire 1
9 is pulled backward (to the right in FIG. 4), the tow bar 2
1 is in the original vertical state, and the upper and lower tow bar support portions 33U,
It is supported from the rear side by 33L. Therefore, the wire 19 can be pulled.

As described above, the loop portion 19 of the wire 19
To remove the towbar 21 from the inside of L, the towbar 21 is pushed forward with the inside of the loop portion 19L of the wire 19 to hold the towbar 21 in the inclined state as described above, and the operator pulls the wire. By lifting the portion holding 19 and lowering the loop portion 19L so that the loop portion 19L of the wire 19 follows the inclined surface 39 of the engagement groove 37, the loop portion 19L can be removed from the lower end portion of the tow bar 21. It is possible.

That is, without removing the tow bar 21 from the balance weight 1, the wire 19 can be easily fastened, connected and released from the tow bar 21.

Further, in the above-mentioned structure, since the fixing bolt 5 is located above the towbar 21, the towbar 21 does not accidentally come out upward.

As understood from the above description,
According to the present embodiment, even if rainwater or the like flows into the groove on the upper surface of the balance weight, the rainwater or the like is prevented from entering the controller chamber because it flows out from the open portion provided in the groove. Is what you can do.

Further, since the rainwater which tends to collect in the groove does not overflow from the groove because it flows out from the open portion, even if the seal cover is opened, the controller room There is no such thing as rainwater flowing into.

Further, the gap between the seal members can be used as a ventilation part, so that heat radiation in the controller chamber
The breathability can be improved.

Furthermore, the pulling wire can be easily attached and detached without removing (pulling in and out) the pulling rod from the balance weight, and the pulling rod can be prevented from coming off with a simple structure. It is a thing.

[Brief description of drawings]

FIG. 1 is a perspective explanatory view conceptually showing the relationship between a balance weight and a seal cover according to an embodiment of the present invention.

FIG. 2 is a perspective explanatory view of a balance weight viewed from the rear side.

FIG. 3 is a cross-sectional explanatory view showing the relationship between the groove formed on the upper surface of the balance weight and the seal member.

FIG. 4 is a cross-sectional explanatory view of a balance weight showing a configuration of a mounting portion of a tow bar.

FIG. 5 is a perspective explanatory view of a tow bar.

[Explanation of symbols]

 1 Balance Weight 3 Frame 5 Fixing Bolt 9 Seal Cover 11 Groove 15 Sealing Member 19 Wire 21 Traction Bar 23 Hinge Pin 31 Support Groove 33U, 33L Traction Bar Support 37 Engagement Groove 39 Slope

Claims (2)

[Claims] 1. A seal structure between a balance weight in a forklift truck and a seal cover of a controller chamber, wherein a groove extending to the left and right sides of the balance weight is provided on an upper surface of the balance weight, and a part of the groove is externally provided. A seal structure for a balance weight portion in a forklift, wherein the seal member provided to the seal cover is provided so as to abut on a bottom portion of the groove or an upper surface of the balance weight inside the groove. 2. The seal structure for a balance weight portion in a forklift according to claim 1, wherein the seal member is provided intermittently.