JP3960584B2 - Anchor belt for changing the seat position of construction machinery - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an anchor belt for fixing a seat of a construction machine.
[0002]
[Prior art]
The structure of the construction machine seat is shown in FIGS. A lower part of the seat 2 is provided with a height riser mechanism for adjusting the height position and a slide mechanism for adjusting the front-rear position. In the figure, 3 is a slide part and 4 is a high riser part. The lower part of these mechanisms is a suspension part 5.
[0003]
By the way, in order to prevent the seat 2 from being detached or the peripheral portion from being damaged by the impact when a large impact load is generated, the seat 2 has an anchor belt at the rear portion thereof to ensure the safety of the operator. The structure is fixed at 1.
[0004]
[Problems to be solved by the invention]
As described above, since the seat 2 can move back and forth and up and down, the position of the seat 2 varies with respect to the lower moving mechanism. The anchor belt 1 is set so that the seat 2 is stretched at the foremost and uppermost position, so that when the seat position is adjusted to the rear or the lowermost position, the anchor belt 1 is slack. Arise.
[0005]
When a large impact load is applied to the seat 2 while the anchor belt 1 is slack, the load is directly transmitted to the high riser portion 4 and the suspension portion 5. For this reason, there is a possibility that the parts of the seat structure such as the slide rail, the hydrizer, and the console mounting bracket may be damaged.
[0006]
The present invention was devised in view of the above-described problems of the prior art. The anchor belt is always stretched regardless of the adjustment position of the seat, thereby effectively preventing damage to the seat structure. It is intended to provide technology that can be used.
[0007]
[Means to solve the problem]
For this reason, the seat belt position change type anchor belt of the construction machine according to the present invention is a winding means for winding the anchor belt by winding the end portion of the anchor belt for fixing the seat whose position can be freely changed and making the belt freely movable. And fixing means for maintaining the tensioned state by pressing the anchor belt.
[0008]
After appropriately adjusting the position of the seat, by appropriately wound a winding means, until the anchor belt is wound Zhang state, i.e. to advance and retract the belt until the pulled state, upon reaching a pulled state, the fixing means The anchor belt is pressed to maintain its tension. Therefore, regardless of the position of the seat, the anchor belt tension can be maintained, and the original function of the anchor belt is not lost.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Specific embodiments of the present invention will be described with reference to the drawings. The following embodiment is merely an example, and it is natural that the present invention is not limited to this embodiment.
[0010]
1 and 2 show a first embodiment. In the figure, 1 is an anchor belt, 2 is a seat, 3 is a slide part, 4 is a high riser part, 5 is a suspension part, 6 is a seat belt, and 60 is a seat belt attachment. Since it is almost the same as the conventional sheet (FIGS. 3 and 4), the description is omitted.
[0011]
The anchor belt 1 has one end 10 fixed to the fixing pin 50 of the suspension unit 5, an intermediate part suspended over a shaft 21 disposed in the seat frame, and the other end 11 connected to the winding device 7. Is wound around a roll 70 in the casing. The winding device 7 rotates the internal roll 70 so that the wound anchor belt 1 can be moved forward and backward from the casing opening 71, and the anchor belt 1 is wound by the forward and backward movement. The casing is fixed to the bottom plate of the sheet 2. The roll 70 may be provided with a stopper that mechanically senses the belt tension state and stops the rotation of the roll 70.
[0012]
A fixing device 8 is disposed between the winding device 7 and the shaft 21 to fix the winding state by pressing the intermediate portion of the anchor belt 1. The fixing device 8 includes a housing 80, two front and rear fixing pins 81 and 82 serving as pressing portions, and a cross-sectional Ω-shaped spring 83 fitted into both ends of both ends of the fixing pins 81 and 82. Both ends of the spring 83 serve as hook portions, and the ends of both fixing pins 81 and 82 are stopped by the hook portions. When the spring 83 is stopped, the spring 83 is in a contracted state. Therefore, the spring 83 is subjected to an expanding reaction force, and the ends of the fixing pins 81 and 82 are pressed. As a result, the fixing pins 81 and 82 press the anchor belt 1. On the other hand, both the side plates of the housing 80 are provided with slits 88 in which the end portions of the rear fixing pins 81 can slide obliquely upward, and sockets 85 of the wire cables 84 connected to the fixing pins 81. , Abutted against the housing front plate. The socket 85 is formed by fitting a piece 85a to which the cable 84 is connected and a piece 85b to be connected to a wire cable 86 extending to the front side of the seat. It is connected to the swinging portion side (opposite the fulcrum) of a lever 87 that is provided at the front lower portion and can swing up and down. When the lever 87 is swung upward in the state where the swinging portion side is positioned below (the state shown in FIG. 1), the wire cable 86 is pulled forward, and accordingly, the socket 85 and the wire cable 84 are pulled. Is pulled, and the rear fixing pin 81 is also pulled. Since both ends of the fixing pin 81 are slidable by the slit 88, the fixing pin 81 is pulled obliquely upward along the slit 88 shape, resulting in separation from the anchor belt 1. The application of the pressing force is released. In other words, by fixing the lever 87 up and down, the fixing device 8 performs the fixing and releasing operation with respect to the anchor belt 1. Note that the fixing device as described above may be appropriately changed in form, such as using another known belt fixing / releasing mechanism (for example, applying pressure with a leaf spring) or disposed in another location (for example, in the winding device). May be.
[0013]
Thus, in this embodiment , the belt 1 is advanced and retracted by the winding device 7 until the anchor belt 1 is in a tensioned state, that is, until it is in a tensioned state. By the operation, the anchor belt 1 can be pressed and the tensioned state can be maintained. Therefore, the anchor belt 1 can be maintained in the tension state regardless of the position of the seat 2.
[0014]
【The invention's effect】
As described above, according to the anchor belt according to the present invention, it is possible to maintain the anchor belt in a state in which the anchor belt is always stretched regardless of the adjustment position of the seat. The effect which can be prevented is acquired.
[Brief description of the drawings]
FIG. 1 is a side view of the present embodiment.
FIG. 2 is a plan view of the present embodiment.
FIG. 3 is an explanatory view (schematic side view) showing a lower structure of a conventional sheet.
FIG. 4 is an explanatory view showing a lower structure of a conventional sheet.
[Explanation of symbols]
1 Anchor belt
2 seats
3 Slide part
4 High riser section
5 Suspension part
6 Seat belt
7 Winding device
8 Fixing device

Claims (1)

Winding means for winding the anchor belt, winding the anchor belt end portion for fixing the position-changeable sheet, allowing the belt to move forward and backward, and fixing means for maintaining the winding state by pressing the anchor belt An anchor belt for changing the seat position of a construction machine .

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