JPH0454071Y2 - - Google Patents

Description

[Detailed Description of the Invention] a. Field of Industrial Application The present invention relates to a stopper device for a folding carrier used in off-road vehicles, etc., and particularly includes a locking mechanism that locks a rotatable subframe at a predetermined angle. This is to prevent it from coming off unexpectedly.

b. Prior Art A conventional rough terrain vehicle 1 is shown in FIG. Flat carrier frames 2 and 3 are fixedly disposed at the front and rear parts of the vehicle body of the rough terrain vehicle 1.
Various types of cargo can be loaded onto these carrier frames 2 and 3. Additionally, U-shaped subframes 4 and 5 are attached to the peripheral pipe portions 2a and 3a of the carrier frames 2 and 3 to prevent cargo from falling off. For example, the front subframe 4 is rotatably mounted in consideration of convenience when loading flat cargo or large cargo. The loading area of the frame 2 can be increased, and when there is no cargo, it can be folded inside the carrier frame 2 or rotated downward so that it does not get in the way.

The locking mechanism for locking the subframe 4 at a predetermined rotation angle is constructed as follows. That is, a pair of boss portions 6 and 7 provided at both ends of the subframe 4 are rotatably and slidably inserted into the peripheral pipe portion 2a. This boss part 6,
As shown in FIGS. 6 and 7, four lock grooves 8 are formed on one end surface of the lock 7, for example, at 90° intervals. On the other hand, a lock pin 9 is fixed to the outer peripheral surface of the peripheral pipe portion 2a, and when this lock pin 9 engages with the lock groove 8, the subframe 4 is fixed.
It is designed to be locked at 90° intervals. In addition,
One boss portion 7 is urged rightward in FIG. 6 by a spring 10, and this urging force causes the lock grooves 8 of the boss portions 6 and 7 to press against the lock pin 9. .

When rotating the subframe 4 described above, it is sufficient to slide the subframe 4 to the left in FIG. 6 to remove the lock groove 8 from the lock pin 9, and then rotate the subframe 4 in the desired direction. . Since the subframe 4 is constantly energized by the spring 10, when the subframe 4 rotates 90 degrees, the lock grooves 8 of the boss portions 6 and 7 automatically engage with the lock pins 9, and the subframe 4 is locked in its rotational position.

c. Problems to be Solved by the Invention Although the conventional foldable carrier is constructed as described above, the following problems have been pointed out with this carrier. In other words, if the subframe 4 is locked horizontally in a state of protruding forward, for example, and the subframe 4 is unexpectedly pushed sideways, the locking mechanism will come off unexpectedly, causing the subframe 4 to suddenly move. There is a risk that the cargo may rotate downward and the cargo may fall off.

This invention was devised to effectively solve the above-mentioned problems, and its purpose is to prevent the locking mechanism from coming off even if the subframe is accidentally pushed sideways. The object of the present invention is to provide a stopper device.

d Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a structure in which a pair of boss parts provided at both ends of the sub-frame are rotatable with respect to the peripheral pipe part of the carrier frame. A lock pin is slidably inserted and provided on the outer peripheral surface of the peripheral pipe portion, and a plurality of lock grooves that can be engaged with the lock pin are formed at a predetermined interval on one end surface of the boss portion, and the subframe (a) the peripheral edge of the boss portion at the other end side where the locking groove is not formed; A pair of shaft holes are formed in the outer circumferential surface of the pipe part, and (b) a pair of spindles are rotatably inserted into the pair of shaft holes, and (c) a pair of spindles are respectively connected to the pair of spindles. a pair of arm portions; (d) an elastic portion having elasticity in the circumferential direction that can fit onto the outer circumferential surface of the peripheral pipe portion at the other end of the boss portion where the lock groove is not formed; e) A stopper is provided, comprising a pair of connecting parts that connect the tips of the pair of arm parts and both ends of the large arc part, and the large arc part of the stopper is connected to the boss part. The lock groove of the boss portion is crimped onto the lock pin by crimping the other end surface.

e Function The stopper device described above can be used by folding down the stopper and
By fitting the arc part into the peripheral pipe part and crimping it to the boss part of the subframe, the subframe cannot slide laterally, so there is a risk of the subframe being accidentally pushed laterally. There is no risk that the locking mechanism will come off.

Further, when the stopper is raised and its arched portion is removed from the peripheral pipe portion, the subframe becomes able to slide laterally, and the subframe can be rotated to a desired rotational position.

f Example An example of the present invention will be described below based on FIGS. 1 to 4. FIG. 1 shows a front view of the front subframe 4 in an upright position.
The same parts as in FIG. 6 of the conventional example are given the same reference numerals, and the explanation thereof will be omitted. The features of this embodiment are:
A stopper 14 is provided at the other end of the boss portion 6 where the lock groove 8 is not formed. More specifically, this stopper 14 is constructed by bending a single hard steel wire as shown in FIG. A pair of support shaft portions 14b rotatably inserted into a pair of shaft holes 15 formed on the outer peripheral surface of the portion 2a, and this pair of support shaft portions 14b.
It is composed of a pair of arm portions 14c that are parallel to each other and connected to each other, and a pair of connecting portions 14d that connect the tips of the pair of arm portions 14c and both ends of the above-mentioned large arc portion 14a. . Furthermore, arm part 1
4c and the arched portion 14a or the connecting portion 14d form an acute angle with each other.

The inner diameter D of the large arc portion 14a is slightly smaller than the outer diameter d of the peripheral pipe portion 2a when it is not fitted into the peripheral pipe portion 2a, and the inner diameter D of the large arc portion 14a is slightly smaller than the outer diameter d of the peripheral pipe portion 2a. By changing the ratio l/d (less than 1) between the mutual distance l and the outer diameter d of the pipe portion 2a, the fitting force or tightening force of the superior arc portion 14a to the peripheral pipe portion 2a can be adjusted. It's summery.

The stopper device for the folding carrier is constructed as described above, and as shown in FIG.
When the curved part 14a is pushed down and the curved part 14a is fitted into the peripheral pipe part 2a, the curved part 14a presses the other end surface of the boss part 6, and as a result, the lock grooves 8 of the boss parts 6 and 7 strongly press against the lock pin 9. Crimp. Therefore, even if the subframe 4 is unexpectedly pushed to the left in FIG. 1 in this state, the subframe 4 will not slide laterally and the locking mechanism will come off and
I don't want to worry about it turning unexpectedly.

Next, when you want to rotate subframe 4, use the 4th
As shown in the figure, if the stopper 14 is rotated upward, the subframe 4 is slid in the direction of arrow a to release the lock mechanism 8 from the lock pin 9, and in this state, the subframe 4 is rotated in the direction of arrow b. good.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment and can be modified in various ways. For example, in the above embodiment, the stopper 14 is made of hard steel wire, but other materials may be used. Further, the connecting portion 14d of the stopper 14 may be configured to widen toward the end so that it can be smoothly fitted into the peripheral pipe portion 2a.

g. Effects of the invention As mentioned above, this invention is provided with a stopper that prevents the subframe 4 from sliding, thereby preventing the locking mechanism of the subframe from accidentally coming off and causing the subframe to rotate unexpectedly. I can do it. Further, since the curved portion of the stopper has elasticity in the circumferential direction, the curved portion can be fitted into and removed from the peripheral pipe portion very easily without using any tools, which is very convenient. Furthermore, even if the stopper remains attached to the peripheral pipe portion, it does not interfere with the sliding or rotation of the subframe, so there is no risk of it being accidentally lost. Furthermore, the stopper can be manufactured very simply and at low cost, for example, from steel wire, and can be very easily attached to the peripheral pipe portion without using tools or the like.

[Brief explanation of the drawing]

1 to 4 show an embodiment of the present invention, in which FIG. 1 is a front view of the subframe, FIG. 2 is an exploded perspective view of the stopper device, and FIG. 3 is an exploded perspective view of the stopper device. FIG. 4 is a perspective view of the device in an inoperative state. 5 to 7 show conventional examples, in which FIG. 5 is a perspective view of an all-terrain vehicle, FIG. 6 is a front view of the subframe, and FIG. 7 is a perspective view of the lock mechanism. It is. 2, 3...Carrier frame, 2a, 3a...
Peripheral pipe section, 4, 5... Subframe, 6, 7
... Boss part, 8 ... Lock groove, 9 ... Lock pin, 10 ... Spring, 14 ... Stopper, 14a ...
...Excellent arc part, 14b... Support shaft part, 14c... Arm part,
14d...Connecting portion, 15...Shaft hole.

Claims (1)

[Claims for Utility Model Registration] A pair of boss portions provided at both ends of the subframe are rotatably and slidably inserted into the peripheral pipe portion of the carrier frame, and the boss portions are rotatably and slidably inserted into the peripheral pipe portion of the carrier frame. A lock pin is provided on the surface, and a plurality of lock grooves that can be engaged with the lock pin are formed at predetermined intervals on one end surface of the boss portion, and the subframe is moved in a direction in which the lock groove and the lock pin engage with each other. In a folding carrier provided with a spring biased by the carrier, (a) a pair of shaft holes are formed in the outer peripheral surface of the peripheral pipe portion at the other end of the boss portion where the lock groove is not formed; (b) a pair of spindles rotatably inserted into the pair of shaft holes, (c) a pair of arms respectively connected to the pair of spindles, and (d) the boss of the boss. , (e) a flexible arc portion having elasticity in the circumferential direction and capable of fitting onto the outer circumferential surface of the peripheral pipe portion on the other end side where the lock groove is not formed; (e) tip portions of the pair of arm portions; A stopper is provided, which comprises: a pair of connecting portions that connect both ends of the large arc portion to each other; and the large arc portion of the stopper is pressed against the other end surface of the boss portion to lock the locking groove of the boss portion. A stopper device for a folding carrier, characterized in that the stopper device is crimped onto a lock pin.