JPH072375Y2 - Torsion bar device for cabult - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a torsion bar device for assisting tilting of a cab of a truck. More specifically, it relates to a device capable of adjusting the torsional force of a torsion bar.

[Prior Art] In this type of torsion bar device, the torsion bar has a repulsive force that is balanced with the weight of the cab and is designed so that one person can easily tilt the cab when tilting.

However, when a truck user installs a carrier on the roof panel of the cab or installs accessory parts inside and outside the cab, the weight of the cab increases. In the conventional torsion bar device, due to the increase in the cab or due to the decrease in the repulsive force of the torsion bar when the tilt operation is repeated for many years, the repulsive force of the torsion bar alone causes the cab to tilt to a predetermined position. There was a problem that it could not be done and required much human power.

Conventionally, the attachment portion of the torsion bar may have a serration structure so that the torsional force of the torsion bar can be adjusted.

As a first method, the first mark is provided on the serration end surface of the torsion bar end, and the second mark is provided on the periphery of the serration hole of the counterpart component such as the cab hinge bracket or the anchor lever into which the torsion bar end fits. Is provided, and the second mark is simply aligned with the first mark, and the end portion of the torsion bar is inserted into the counterpart component.

As a second method, at least one tooth crest is removed from the serration hole of the mating component to form a positioning groove, a so-called missing tooth, and the serration at one or both ends of the torsion bar is notched in the at least one tooth trough. There is a method of forming a convex portion that can be fitted in a positioning groove that is a tooth, aligning the convex portion with the positioning groove, and inserting the end portion of the torsion bar into a counterpart component.

[Problems to be solved by the invention] However, in the first method, since the serration teeth at the end of the torsion bar are fine, it is easy to misalign in the circumferential direction when mating with the mating part, and the assembly is erroneously assembled. There is a possibility to attach. In particular, when the environment for assembling the torsion bar is not sufficient in terms of illuminance and space, it is difficult to align the marks accurately and the workability of assembling the parts is poor. Therefore, there is a problem that it is difficult to find out if the parts are assembled by mistake.

In addition, the second method is excellent in workability in assembling and there is no risk of incorrect assembly, but it is impossible to change the assembly position of the torsion bar, and once assembled, the torsional force of the torsion bar is reduced. There was a problem that could not be readjusted.

The purpose of the present invention is to make it possible to easily carry out the prescribed accurate assembly even when the environment when the torsion bar is assembled is not sufficient in terms of illuminance and space, and it is excellent in workability, It is an object of the present invention to provide a torsion bar device for a cavitt which can readjust the torsional force of the torsion bar to a desired degree.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a pair of cab hinge brackets that are respectively fixed to left and right chassis frames of a vehicle, and one end of the bracket that is installed on these brackets. A torsion bar fixed to one side and the other end of which is rotatably supported on the other side of the bracket, and an anchor lever fixed to the other end of the torsion bar for tilting the cab, one end of the torsion bar or This is an improvement of a torsion bar device for a cavitt in which serrations are provided at both ends and one of the brackets or the anchor lever is provided with a serration hole into which the serration can be fitted.

The characteristic configuration is that at least one tooth crest is removed from the serration hole to form a positioning groove, and at least one root of the serration is bonded with a peelable filler to fit the positioning groove. It is in the place where the compatible convex portion is formed.

[Operation] Align the serration projection with the serration hole positioning groove, and insert the end of the torsion bar into the mating part. When readjusting the torsional force of the torsion bar, the filling material is peeled off and the filling material is similarly adhered to another trough separated by a desired amount, and the same operation is repeated.

[Embodiment] Next, an embodiment of the present invention will be described in detail with reference to the drawings.

As shown in FIGS. 1 to 3, a pair of cab hinge brackets 13 and 14 are fixed by bolts 15 near the front ends of chassis frames 11 and 12 on the left and right of the truck. The pair of brackets 13 and 14 has a pin 16 inserted into the through holes 13a and 14a to pivotally support the tilt cab 10 (Fig. 3), and the pair of brackets 13 and 14 is provided with a pair of torsion bars 17 and 18. To be done. The right end of the torsion bar 17 and the torsion bar
Anchor levers 21 and 22 for tilting the tilt cab 10 are respectively fixed to the left end of 18.

Since the brackets 13 and 14 and the torsion bars 17 and 18 are symmetrical, the bracket 14 and the torsion bars 17 and 18 will be described below.
The left end of will be described as a representative.

As shown in FIGS. 1 and 5, two serrations 25 are provided at the left end of the torsion bar 17 at intervals.
Two serrations 27 are also provided at the left end of the torsion bar 18 at intervals. A serration hole into which the serration 25 can be fitted is provided at the center of the cab hinge bracket 14.
28 and a through hole 29 through which the left end of the torsion bar 18 penetrates. A positioning groove 28a is formed in the serration hole 28 by removing one tooth of the tooth, and the left end of the torsion bar 18 is rotatably supported by the through hole 29 via a collar 31. A second mark 14b indicating the position of the positioning groove 28a is formed on the side surface of the bracket 14 in the radial direction of the serration hole 28. 42 is a bolt hole into which the bolt 41 (FIG. 2) is screwed.

Further, as shown in FIGS. 1 and 6, a serration hole 32 into which the serration 27 at the left end of the torsion bar 18 can be fitted is provided at the base end of the anchor lever 22. A positioning groove 32a is formed in the serration hole 32 by removing one of the teeth. This positioning groove 32 is also provided on the side surface of the anchor lever 22.
A second mark 22a indicating the position of a is engraved in the radial direction of the serration hole 32. Reference numeral 33 is a bolt hole into which the bolt 34 is screwed.

As shown in detail in FIGS. 1 and 4, a torsion bar
17 A peeling filler F is adhered to one common root of the two serrations 25 at the left end to form a convex portion 24 which can be fitted into the positioning groove 28a. In this example, the filler F is a resin adhesive. On the end face of the torsion bar 17, a first mark 17a indicating the position of the convex portion 24 is engraved in the radial direction of the serration 25. Further, the peelable filler F is adhered also to one common tooth trough of the two serrations 27 on the left end of the torsion bar 18, and the protrusion 2 that can be fitted into the positioning groove 32a.
6 is formed. This convex portion 2 also on the end face of the torsion bar 18
A first mark 18a indicating the position of 6 is engraved in the radial direction of the serration 27.

The bolt 41 abuts between the two serrations 25 with the two serrations 25 fitted in the serration holes 28, and fixes the torsion bar 17 so as not to move laterally with respect to the bracket 14. Further, the bolt 34 abuts between the two serrations 27 with the two serrations 27 fitted in the serration holes 32, and fixes the anchor lever 22 so that the anchor lever 22 does not come off from the torsion bar 18.

Next, a method of assembling the torsion bar device having such a configuration and a method of adjusting the torsional force of the torsion bar will be described.

As shown in FIGS. 1 and 7, first, the torsion bar 17
The first mark 17a of the bracket 14 and the second mark 14b of the bracket 14 are aligned with each other so that the protrusion 24 (fourth mark) of the serration 25
(Fig.) Is aligned with the positioning groove 28a of the serration hole 28. When the left end of the torsion bar 17 is passed through the serration hole 28 in this state, the serration 25 fits into the serration hole 28. Tighten the bolt 41 to fix the torsion bar 17 to the bracket 14. If the first mark 17a and the second mark 14b do not match, attach the left end of the torsion bar 17 to the bracket.
I can't assemble to 14.

Then, attach the left end of the torsion bar 18 to the through hole of the bracket 14.
The first mark 18a and the second mark 22a of the serration 27 are penetrated through the convex portion 26 of the serration 27 (fourth mark).
(Fig.) Is aligned with the positioning groove 32a of the serration hole 32. When the left end of the torsion bar 18 is passed through the serration hole 32 in this state, the serration 27 fits in the serration hole 32. Tighten the bolt 34 to secure the anchor lever 22 to the torsion bar 18. When the first mark 18a and the second mark 22a do not match, the anchor lever 22 is set to the torsion bar 18
Cannot be attached to the left end of.

As a result, even if the assembling environment of the torsion bars 17 and 18 and the anchor lever 22 is bad, the first marks 17a and 18a can be simply aligned with the second marks 14b and 22a without performing an incorrect assembling work. Torsion bar with easy work 1
It is possible to assemble 7 and 18 accurately in place.

When the rear end of the cab 10 is pushed down against the repulsive force of the torsion bars 17 and 18, the cab 10 rotates around the pin 16 and is held at the traveling position shown by the chain double-dashed line in FIG. 3 by the locking device (not shown). To be done. Torsion bar 17 and 18 cab
If you have a weight of 10 and a balanced repulsion,
At the time of tilting, one person can easily tilt the cab 10.

If the weight of the cab 10 increases or the repulsive force of the torsion bars 17 and 18 decreases during use, the cab 10 is tilted again and the torsional forces of the torsion bars 17 and 18 are adjusted.

The first method is to loosen the bolt 34 and remove the anchor lever 22 from the torsion bar 18. Then, until the repulsive force of the torsion bar 18 is balanced with the own weight of the cab 10, as shown in FIG. 8, completely remove the filling material matching the first mark 18a with a knife or a sharp thin metal plate. Serration 27
Newly bond to another tooth valley. In FIG. 8, 1 from the original tooth
The filling is adhered by shifting only the teeth. The newly formed convex portion is fitted into the positioning groove 32a again, and the anchor lever 22 is fixed in the same manner as described above. The anchor lever 21 of the torsion bar 17 is adjusted in the same manner.

The second method is to loosen the bolt 41 and turn the torsion bar 17
Pull out from bracket 14. Then, as shown in FIG. 8, the filling material that coincides with the first mark 17a is similarly completely peeled off and newly adhered to another root of the serration 25. 8th
In the figure, the filler is bonded by shifting one tooth from the original tooth. The newly formed convex portion is fitted into the positioning groove 28a again, and the anchor lever 17 is fixed in the same manner as described above. Do the same for the right end of the torsion bar 18.

As a result, the twisting force of the pair of torsion bars can be reliably adjusted by the required amount.

Although a resin adhesive is used as an example of the filler in the above description, solder or paint may be used as long as it can be peeled off after being adhered.

Also, an example of engraving the second marks 14b and 22a has been shown,
It is also possible to apply a paint having a prominent color such as white or bright colors, or a marking paint such as fluorescent paint.

Also, when a paint with a conspicuous color such as white or bright colors or a fluorescent paint is used as the filling material, the convex portion can be identified even if the illuminance of the assembling environment is not sufficient.
It is not necessary to provide 17a and 18a. In particular, if the illuminance is sufficient and the operator can determine the assembly position, neither mark may be provided.

Further, the number of troughs and teeth for forming the convex portion and the positioning groove is not limited to one, and if the number of troughs and teeth is the same,
Two or three may be used.

Also, an example is shown where serrations are provided on both left and right ends of the torsion bar and these are fitted into the serration holes.
The serrations may be provided only on one of the left and right ends of the torsion bar.

Furthermore, although the double torsion bar type cavitating device has been described, a single torsion bar type device can also be applied.

[Effects of the Invention] As described above, according to the present invention, when the torsion bar is assembled to the cab hinge bracket, the peelable convex portion is positioned to the other component even if there is not enough illuminance or space. The torsion bar can be assembled accurately and easily at a predetermined position by a simple work of just matching the groove, and a device having excellent workability in assembly can be obtained.

In addition, when readjusting the torsional force of the torsion bar after assembly, peel off the filling material that has adhered to the existing serrations at the end of the torsion bar, and then add the new filling material to the valleys that have been displaced by the required amount. By bonding, the torsional force of the torsion bar can be easily readjusted to the desired degree.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an enlarged main part of a torsion bar device according to an embodiment of the present invention. FIG. 2 is a perspective view showing the assembled state. FIG. 3 is a side view showing the state of attachment to the cab. FIG. 4 is a side view of the end portion of the torsion bar showing the serration. FIG. 5 is an enlarged side view of the main part of the cab hinge bracket. FIG. 6 is an enlarged side view of the main part of the anchor lever. FIG. 7 is an enlarged side view of the main part of the cab hinge bracket before adjusting the torsional force of the torsion bar. FIG. 8 is an enlarged side view of an essential part of the cab hinge bracket after the adjustment. F: Filling material, 10: Tilt cab, 11, 12: Chassis frame, 1
3,14: Cab hinge bracket, 17,18: Torsion bar, 17a, 18a: 1st mark, 14b, 22a: 2nd mark, 21,22:
Anchor lever, 24,26: convex part, 25,27: serration, 28,3
2: Serration hole, 28a, 32a: Positioning groove, 29: Through hole.

Claims (1)

[Scope of utility model registration request] 1. A pair of cab hinge brackets fixed to left and right chassis frames of a vehicle, respectively, and one bridge fixed to one of the brackets and rotatably attached to the other of the brackets. A torsion bar supported and an anchor lever fixed to the other end of the torsion bar for tilting the cab are provided, and one side or both ends of the torsion bar is provided with serrations, and one of the brackets or the anchor lever is provided. In a cavitating torsion bar device provided with a serration hole into which the serration can fit, a positioning groove is formed by deleting at least one tooth crest in the serration hole, and the serration is formed in at least one tooth trough of the serration. Adhesive with peelable filler and fit in the positioning groove Kyabuchiruto torsion bar apparatus characterized by ability convex portions are formed.