KR20000016927U - Connect arm assembly in swing arm door - Google Patents

Abstract

The connection arm structure of the swing arm door using the ball stud that can prevent the misalignment of the operation of the swing arm door due to the welding torsion caused by the welding of the control part when the swing arm door is assembled or the assembly tolerance when the swing arm door is assembled Started.

In the swing-arm type door of the bus, a ball 10 having a spherical shape and a rotating shaft fitted to the rotating shaft portion of the second connecting arm 3 and the outer circumference of the ball 10 is formed. The present invention is characterized in that the ball stud formed by the ball fixing portion 20 formed at a height of 1/2 of the diameter of the ball 10 connects the first connection arm 2 and the second connection arm 3. The ball stud has the effect of smoothly operating the swing arm door.

Description

Connect arm assembly in swing arm door using ball studs

The present invention relates to a structure of a connection arm assembly that opens and closes a swing arm door of a bus, and in particular, by adopting a ball stud to the connection arm assembly, welding torsion or swing arm door generated by welding of a control part when assembling the swing arm door. It relates to a connection arm structure of a swing arm door using a ball stud that can prevent the mismatch of the operation of the swiss arm door by the assembly tolerance during assembly.

The door used for the door of the bus is largely used as a folding door type and a swinging arm door type. The folding door type is a structure in which the door is opened while the door of the bus is folded in half, and the swing arm door type is a structure in which the door of the bus is opened and closed by moving by the swing arm.

FIG. 1A is a front view of a general swing arm door, FIG. 1B is a sectional view taken along line BB ′ of FIG. 1A, and FIG. 1C is a detailed view of part A of FIG. 1A, showing the structure of the swing arm door.

The structure of such a structure looks at the operation of the swingarm door as follows.

The rotational energy transmitted from the outside rotates the first connecting arm 2 through the adjusting shaft, and also rotates the second connecting arm 3 connected to the first connecting arm 2 by the rotating shaft. The other part of the second connection arm 3 is rotated to open and close the swing arm door by rotating the main arm 4 of the swing arm door 1. In FIG. 1C, a represents the closed state of the door 1, and b represents the open state of the door 1.

FIG. 2A is a partial detailed view of the portion B of FIG. 1C, illustrating in more detail the components of the swing arm door to be opened and closed.

FIG. 2B shows a partial detail view of part B of FIG. 1C shown in FIG. 2A. In FIG. 2B, the first connecting arm 2 and the second connecting arm 3 driving the swing arm door should always be horizontal and smoothly connected to the second connecting arm 3 for smooth opening and closing of the door. ) Must be connected perpendicular to the swing arm 5 of the door.

If the first connecting arm 2 and the second connecting arm 3 are not horizontal or the main arm 4 and the swing arm 5 of the door are not perpendicular to each other, the swing arm door is not smoothly opened or closed. do.

However, the main shaft 6 and the swing arm 5 of the door are joined to each other by a welding operation, but the vertical movement may occur due to the welding twist generated during the welding operation. In addition, when the main shaft 6 and the swing arm 5 of the door are perpendicular to each other, and the first connecting arm 2 and the second connecting arm 3 are horizontally assembled, vibrations or external forces generated while the vehicle is traveling When the deviation occurs in the initial assembly state due to the impact of the swing arm door operation was not smooth.

The present invention has been made to solve the above problems, by adding a ball stud to each component that operates the swingarm door when opening and closing the swingarm door of the bus assembly assembly tolerance or use during use An object of the present invention is to provide a connection arm structure of a swing arm door using a ball stud that allows the swing arm door to operate smoothly even when an error occurs due to an impact caused by the impact.

Figure 1a is a front view of a typical swingarm door.

FIG. 1B is a sectional view taken along the line B-B 'of FIG. 1A; FIG.

1C is a detail view of portion A of FIG. 1A.

FIG. 2A is a partial detail view of portion B of FIG. 1C; FIG.

FIG. 2B is a side view of part B of FIG. 1C;

Figure 3 is a block diagram showing the structure of the connection arm assembly according to the present invention.

<Description of the symbols for the main parts of the drawings>

1: Swing arm door 2: First connecting arm

3: 2nd connecting arm 4: main arm

5: swing arm 6: headstock

10: ball 20: ball fixing part

30: rotating shaft

Referring to the drawings in detail the configuration and operation of the subject innovation as follows.

3 is a block diagram showing an embodiment of a structure of a connection arm assembly according to the present invention. According to the drawings it can be seen that one embodiment of the present invention is configured to connect the second connection arm 3 and the swing arm 5 of the door using a ball stud in the swing arm type door of the bus. .

The ball stud is formed in a spherical shape and has a shape such as an outer circumference of the ball 10 and the outer circumference of the ball 10 in which a rotating shaft fitted to the rotating shaft portion of the second connecting arm 3 is formed ( 10) It can be seen in FIG. 3 that the ball fixing part 20 is formed to have a height of 1/2 of the diameter.

Looking at the configuration and operation of the subject innovation as follows.

The same reference numerals are used for the same parts as the prior art, and description thereof is omitted.

A ball stud is attached to the rotating shaft of the first connecting arm 2 at the connecting portion that is the rotary shaft of the first connecting arm 2 and the second connecting arm 3 that opens and closes the swing arm door.

The ball stud is composed of a ball 10, a ball fixing portion 20 surrounding the ball 10 and a rotating shaft 30 protruding from the ball 10. The rotating shaft 30 formed at one side of the ball 10 is fitted to the rotating shaft of the second connecting arm 3, and the ball fixing part 20 is fitted to the rotating shaft of the first connecting arm 2.

Ball fixing portion 20 is configured by combining the same shape of the upper and lower parts. The ball fixing part 20 has the following structure. The height of the fixing part is within 1/2 of the diameter of the ball 10, and a circumferential part having the same shape as the shape of the ball 10 is formed inside, so that the ball 10 can move freely in the fixing part after the upper and lower fixing parts are assembled. To help. In addition, a hole 24 is formed at the upper side of the fixing part so that the rotating shaft 30 formed in the ball 10 can pass therethrough. After hot-pressing the fixing part of this shape into the rotating shaft part of the 1st connection arm 2, the rotating shaft 30 formed in the ball 10 is inserted through the hole 24, and the other fixing part is inserted in the lower part. Put together to complete.

The operation of the present invention configured as described above is as follows.

The ball studs connecting the first connecting arm 2 and the second connecting arm 3 can smoothly transmit power even when the two arms to which they are connected are not horizontal to each other. The main shaft 6 connected to the main shaft 6 is not perpendicular to the swing arm 5 of the door by welding torsion or the like, or the first connecting arm 2 and the second connecting arm 3 are horizontal to the outside due to an external impact or the like. Even if it is not achieved, the opening and closing operation of the swingarm door is smooth.

According to the present invention, the uncertainty of the door operation caused by non-uniformity of each component in opening and closing the swing arm type door of the bus is fixed by a ball stud fixed to the rotation axis of the first connection arm and the second connection arm. It has an effect that can be completely eliminated.

Claims (1)

In the swing-arm type door of the bus, a ball 10 having a spherical shape and a rotating shaft fitted to the rotating shaft portion of the second connecting arm 3 and the outer circumference of the ball 10 is formed. A ball stud formed by a ball fixing portion 20 formed at a height of 1/2 of the diameter of the ball 10, connecting the first connecting arm 2 and the second connecting arm 3 to each other. Swing arm door connection arm structure.