JPS6137324Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an armrest used primarily in seats for industrial vehicles such as tractors.

Conventional armrests of this type are generally rotatable in order to make it easier for passengers to get on and off the vehicle. In this case, a suitable bracket is often used to maintain the flip-up position and the use position. Therefore, if the rotating type was to be replaced with a fixed type, there was the inconvenience of having to replace it with another fixed bracket. Furthermore, in order to use such an armrest on both the left and right sides, it was necessary to prepare brackets for each of the left and right sides. Moreover, if one is a rotating type and the other is a fixed type, additional brackets are required for each type, and in the end, a maximum of four types of brackets are required.The number of parts is large, and the manufacturing and assembly process is complicated. was at a disadvantage.

The present invention overcomes these disadvantages by using a single bracket to cover all of the above cases.

The following description will be made based on the embodiments shown in the drawings.

First, it is shown in FIGS. 1 to 4. In the first embodiment, the armrest A is rotatably attached to the side of the seat back 1 via a regulating bracket B. The regulation bracket B consists of a mounting plate 8 and a regulation plate 7 fixed to the central portion of the mounting plate 8. Regulation plate 7
The center is penetrated by the mounting shaft 6 together with the mounting plate 8, and a guide recess and a lock recess are arranged concentrically around the mounting shaft. The guide recess is an arcuate notch 9 that is approximately 1/4 of the circumference. Further, both ends of the notch 9 are formed into stoppers 10, 10' that project outward in the circumferential direction. Also,
Centering around the mounting shaft 6, each stopper 10,1
Two lock recesses are provided at positions symmetrical to 0'. The lock recess has a hole 11 into which the pin 5 can be fitted;
11'. Mounting plate 8 has mounting holes 12,1
It is fixed to the side part of the seat back with bolts 13, 13 from 2. The armrest main body 2 is fixed to a mounting bracket 3, and the mounting bracket 3 is provided with a pin 5, which is a protrusion, in a shaft hole and in the vicinity thereof. After aligning the shaft hole and the mounting shaft 6 with the mounting bracket 3 and fitting the pin 5 into the notch 9, insert the cap nut 4.
It is attached to the regulation bracket 3 by tightening it.

Next, the rotation operation of this armrest will be explained. First, in order to flip up the armrest A as shown in FIG. 2 from the usage state shown in FIG. 1, it is sufficient to rotate the armrest in the direction of arrow A in FIG. At this time, the pin 5 slides on the arc of the notch 9 and stops at the position where it contacts the stop bar 10, as shown in FIG. Conversely, to return the armrest to the operating position,
Similarly, move the armrest in the direction of arrow B to stopper 1.
Rotate until pin 5 contacts 0'. This can prevent the armrest from further rotating downward during use.

What is shown in FIG. 6 is an example in which the regulating bracket B of the first embodiment is used as is, and the armrest is fixed.

In this case, the purpose can be achieved simply by turning the regulating bracket B of FIG. 3 upside down and using it. That is, the pin 5 fits into either of the lock holes 11, 11' and is fixed so that it can no longer rotate in either direction. When the pin 5 fits into the lock hole 11, it becomes the flip-up position (the state shown in Fig. 2), and when it fits into the lock hole 11', it becomes the use position (the state shown in Fig. 2).
condition).

Further, in the third embodiments shown in Nos. 7 and 8, the mounting bracket B has a different structure. That is, the bracket B of this embodiment is formed by press-molding a single plate-shaped body, and the bracket 14 has a shaft hole 17 in the center, mounting holes 19, 19 in the upper and lower ends, and a hole in the shaft hole. , a mounting shaft 18 is inserted and fixed. In addition, on a concentric circle centered on the shaft hole 17, there is an elongated hole 15 that serves as a guide concave portion and is approximately 1/4 of the circumference, and a lock hole that serves as a lock concave portion is located at a position where both ends of the elongated hole are symmetrical about the axis. 16, 16 are provided. This bracket 14 functions in exactly the same manner as in the previous embodiment, and both ends of the elongated hole 15 naturally serve as stoppers. This case is advantageous in that it can be manufactured in a single molding process regardless of whether metal or resin is used.

In each of the embodiments, there are two lock recesses, but it is possible to form an appropriate number of lock recesses on the same circumference to enable angle adjustment. Furthermore, as shown in FIG. 5, simple angle adjustment is possible via a spring washer 20.

Furthermore, if the mounting position of the armrest is to be reversed from left to right, it is sufficient to simply move the mounting bracket to the other side. Furthermore, by turning the mounting bracket upside down and installing it in this state, it is easy to convert between a rotary type and a fixed type.

As described above, in the present invention, four types of armrests can be constructed using a single mounting bracket: left and right, rotating, and fixed, and armrests of different types for left and right can also be installed. Therefore, there is no need for various brackets as in the past.
A single bracket allows for the assembly of any desired type, which is a great advantage in assembly.

[Brief explanation of the drawing]

Fig. 1 is a side view of the armrest in the use position, Fig. 2 is a side view of the armrest in the flip-up position, and Fig. 3 is a plan view showing the first embodiment of the regulation bracket B. , Fig. 4 is a sectional view of the same, a side view of the regulation bracket when using a spring washer, Fig. 6 is a side view showing the regulation bracket part in an example of reverse use, and Fig. 7 is a second implementation of regulation bracket B. A plan view showing an example,
FIG. 8 is a sectional view. A...Armrest, B...Regulation bracket,
1...Seat back, 2...Armrest body,
3... Mounting bracket, 4... Cap nut, 5...
Projection (pin), 6...Mounting shaft, 7...Regulation plate, 8
... Mounting plate, 9 ... Notch, 10 ... Stopper, 11 ... Hole, 12 ... Mounting hole, 13 ... Bolt, 14 ... Bracket, 15 ... Long hole, 16 ...
...Lock hole, 17...Shaft hole, 18...Shaft, 19...
...Mounting hole, 20...Spring washer.

Claims (1)

[Scope of claims for utility model registration] An armrest characterized by comprising the following (a) to (g). (a) Mounting bracket fixed to the armrest body. (a) The mounting bracket shall be provided with a shaft hole and a protrusion. (c) Temporary bracket fixed to the side of the seat bag. (d) A mounting shaft provided on the regulation bracket, and a guide recess and a lock recess arranged on a concentric circle centered on the mounting shaft. (E) The guide recess is approximately 1/4 of the circumference of the concentric circle.
length, with stoppers provided at both ends. (f) The lock recesses are provided at least at symmetrical positions with respect to the mounting shaft of the stopper, and are of a size that allows the protrusion to be fitted and fixed. (g) The mounting bracket is pivotally attached to the mounting shaft, and the protrusion is fitted into either the guide recess or the lock recess.