KR100921811B1 - Supporting apparatus of lower arm - Google Patents

Abstract

PURPOSE: A lower arm supporting apparatus is provided to prevent displacement of a lower arm even in a long time work by providing a uniform elastic force to a lower arm support. CONSTITUTION: A lower arm supporting apparatus(1) includes first and second mounting brackets, a lower arm support unit, a location restriction unit, and a load absorbing unit. The first and second mounting brackets(11,13) are mounted at a certain interval on a carriage, corresponding to the location of a lower arm. The lower arm support unit(20) is inserted between the mounting bracket to support the lower side of the lower arm. The location restriction unit(40) is installed on the inner side of each mounting bracket and supports the back of the lower arm support unit to restrict the lower arm supporting unit. The load absorbing unit(70) is mounted behind the first mounting bracket and connected to the lower side of the lower arm support unit in order to absorb the load which is applied by the lower arm to the lower arm support unit.

Description

Lower arm support device {SUPPORTING APPARATUS OF LOWER ARM}

The present invention relates to a lower arm supporting apparatus, and more particularly, to a lower arm supporting apparatus for preventing sagging of a lower arm connected to a vehicle body during a mounting operation during a suspension assembly mounting operation in a chassis process of a design assembly line.

In general, the suspension of the vehicle is an important device for connecting the axle and the vehicle body, and promoting ride comfort and driving stability. The suspension of the vehicle is mainly used to stably support the vehicle body from the wheel while suppressing or rapidly reducing the vibration provided from the wheel. Will perform.

These suspensions are mounted on the body frame in the chassis process of the chairman assembly line, and the above mounting work is performed by a manual operation by the operator, and the operator respectively mounts the suspension assembly on the front and rear of the body frame seated on the bogie. Will be installed.

Here, when the suspension assembly is mounted, a self load of the lower arm which is rotatably connected to the vehicle body frame and a sag caused by the load of the suspension assembly are generated, and a lower arm support device is used to prevent the suspension assembly. .

In the lower arm support apparatus 100 according to the related art, as illustrated in FIG. 1, a body frame 103 on which an engine 101 is mounted is seated on a trolley 105, and is mounted on the body frame 103. One side is rotatably connected and installed on the trolley 105 corresponding to the position of the lower arm 109 on which the knuckle 107 is mounted on the other side.

The lower arm support device 100 is basically a fixing portion 110 is fixed on the trolley 105, the lower arm support 111 is coupled to the upper portion of the fixing portion 110 to be rotatable, The lower arm support roller 115 that contacts the roller line 113 and supports the lower arm support 111 is rotatably coupled to the lower side of the lower arm support 111.

A spring pocket 117 is fixed to the lower arm support 111 on the trolley 105, and a spring for elastically supporting the lower arm support 111 upward in the spring pocket 117. 119 is inserted to support the lower arm 109 during the suspension assembly mounting operation.

However, in the conventional lower arm support device as described above, when the lower arm deflection is required, the roller line has to be removed and the work is performed again, thereby reducing work efficiency. The lower arm support sag caused by the lower arm springs. Due to the elastic support, the positional deviation of the lower arm support is generated due to the change of the elastic force of the spring when the spring is compressed for a long time, and the work position is difficult to be determined due to the vibration of the spring, which reduces work efficiency and work efficiency. have.

In addition, as the lower arm supports have to be replaced in order to correspond to the lower arms mounted at different positions for each vehicle type, it is difficult to cope with the multiple vehicle types, thereby impairing workability.

Therefore, the present invention has been invented to solve the problems as described above, the object of the present invention, when mounting the suspension assembly on the body frame seated on the bogie, lower arm support unit, position regulation to support the lower arm By including a unit and a load absorbing unit, it is possible to provide a lower arm support device that prevents sagging of the lower arm rotatably connected to the vehicle body frame, thereby improving workability and making it compatible with multiple vehicle types. .

Lower arm support device according to an embodiment of the present invention for achieving this object, to support the lower portion of the lower arm rotatably connected to the body frame during the mounting operation of the suspension assembly on the body frame seated on the trolley. A lower arm support device, comprising: first and second mounting brackets mounted at a predetermined interval corresponding to a position of the lower arm on the bogie; A lower arm support unit having a rear side inserted between the respective mounting brackets to support a lower portion of the lower arm; A position control unit mounted inside each of the mounting brackets to support a rear side of the lower arm support unit, and regulate the lower arm support unit; And a load absorbing unit mounted to the rear of the first mounting bracket and connected to a lower side of the lower arm supporting unit to absorb a load applied to the lower arm supporting unit from the lower arm.

The lower arm support unit may include a base plate having a rear end disposed between the mounting brackets and supported by the position control unit; A first supporter mounted on an upper end of the base plate; And a second supporter having a “??” shape hinged to both sides of the first supporter through slot-type mounting holes formed at both ends.

The first and second supporters may be equipped with first and second contact pads, respectively, on upper surfaces thereof.

The position control unit is connected to the front end of the first mounting bracket through the hinge pin is hinged, and supports one side of the rear upper surface of the base plate, the other end is formed with a locking projection, the insertion hole on one side of the cross section The main block is formed; A stopper mounted through a mounting part formed on the first mounting bracket at a position corresponding to the locking protrusion, and adjusting the inclination of the main block by the locking protrusion when the main block is rotated; And a front end portion of the second mounting bracket may be hinged through a hinge pin, and may include an auxiliary block supporting the other side of the rear upper surface of the base plate.

The stopper may be composed of a nut fixed to the lower portion of the mounting portion and a bolt fastened to the nut so that the height can be adjusted toward the locking projection.

Fixing means for fixing the main block is mounted to the outside of the first mounting bracket at a position corresponding to the insertion hole, one end of the fixing means is fixed to the outside of the first mounting bracket, the other end is a certain angle An inclined surface, the mounting pipe having first and second locking grooves formed at the highest and lowest points of the inclined surface, respectively; And a lever which is inserted into the mounting pipe so as to be inserted into the mounting pipe so as to be inserted into the first mounting bracket at a predetermined interval, and at one end thereof is fixed to the respective locking grooves and the other end is inserted into the insertion hole according to the rotation operation of the lever. It may be made of.

The first mounting bracket further includes a connecting plate protruding upward in the vertical direction with the trolley on the rear side, and the slots being spaced apart at regular intervals on both sides of the cross-section, and the load absorbing unit of the connecting plate A hinge bracket mounted on each slot to enable position adjustment; A connection bracket fixed to a rear center of the rear of the base plate; And a gas spring having a rear end hinged to the hinge bracket and a rod end hinged to the connection bracket.

According to the lower arm support device according to the present invention as described above, when the suspension assembly is mounted on the body frame seated on the trolley, the lower arm support unit, a position control unit, and a load absorbing unit to support the lower part of the lower arm; In this configuration, it is possible to prevent sagging of the lower arm rotatably connected to the vehicle body frame, thereby improving workability and making it compatible with multiple vehicle types.

In addition, when the lower arm deflection phenomenon is required, the lower arm support unit is deflected by one rotation operation through the fixing means, and the lower arm support is applied even during long time operation by applying a load absorbing unit to which a gas spring is applied. By providing the same elastic force to the unit to prevent the occurrence of positional deviation, it also has the effect of maintaining the working position to improve the work efficiency and work efficiency.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail as follows.

Prior to this, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, which can be replaced at the time of the present application It should be understood that there may be various equivalents and variations.

1 is a configuration diagram of a trolley to which a lower arm support device according to an embodiment of the present invention is applied, and FIGS. 2 and 3 are a perspective view and an exploded perspective view of a lower arm support device according to an embodiment of the present invention, and FIG. Step by step state of operation of the fixing means applied to the lower arm support device according to an embodiment of the invention.

The lower arm support device 1 according to an exemplary embodiment of the present invention, when the suspension assembly 7 is mounted on the body frame 5 seated on the trolley 3, as shown in FIG. The lower arm (20) includes a lower arm support unit (20), a position control unit (40), and a load absorbing unit (70) so as to support the lower part of the lower arm which is rotatably connected to the body frame (5). 9) It prevents sag and improves workability, so that it can be shared in response to multiple models.

To this end, the lower arm support device 1 according to the embodiment of the present invention, basically, as shown in Figures 2 and 3, the first, second mounting brackets (11) (13), the lower arm support oil The net 20, the position control unit 40, the load absorbing unit (70).

First, the first and second mounting brackets 11 and 13 are spaced at regular intervals on the trolley 3 corresponding to the position of the lower arm 9 which is rotatably connected to the body frame 5. It is mounted in the state.

In the present embodiment, the lower arm supporting unit 20 is inserted between the rear mounting brackets 11 and 13 so as to support the lower portion of the lower arm 9.

The lower arm support unit 20 is composed of a base plate 21, a first supporter 23, and a second supporter 25.

The base plate 21 is formed in a “T” shape, and a rear end is disposed between the mounting brackets 11 and 13 to be supported by the position control unit 40.

The first supporter 23 is mounted on an upper surface of the distal end of the base plate 21, and the second supporter 25 is connected to the first supporter 23.

The second supporter 25 is formed in a “??” shape and is hinged so as to be rotatable on both sides of the first supporter 23 through slot-type mounting holes 27 formed at both ends.

Here, the first and second supporters 23 and 25 are provided with first and second contact pads 29 and 31 on their upper surfaces to minimize friction when the lower and lower arms 9 are in contact with each other. Is mounted.

Preferably, the first and second contact pads 29 and 31 are made of a rubber material.

In this embodiment, the position control unit 40 is mounted on the inner side of each mounting bracket (11, 13), respectively, to support the rear side of the lower arm support unit 20, the lower arm support unit (20) will be regulated.

To this end, the position control unit 40 according to the present embodiment is largely composed of the main block 41, the stopper 43, and the auxiliary block 45.

First, the main block 41 is hinged through a hinge pin 47 at the front inner side of the first mounting bracket 11 to support one side of the rear upper surface of the base plate 21.

The main block 41 has a locking protrusion 49 is formed at the other end, the insertion hole 51 is formed on one side on the cross section.

The stopper 43 is mounted through a mounting part 15 formed on the first mounting bracket 11 at a position corresponding to the locking protrusion 49.

The stopper 43 adjusts the inclination of the main block 41 when the locking protrusion 49 is caught when the main block 41 is rotated.

Here, the stopper 43 is a nut 53 fixed to the lower portion of the mounting portion 15 so as to adjust the height toward the locking projection 49, and the bolt 55 is fastened to the nut 53 Is done.

Meanwhile, fixing means 60 for fixing the main block 41 rotated around the hinge pin 47 on the outside of the first mounting bracket 11 at a position corresponding to the insertion hole 49. Is fitted.

The fixing means 60 consists of a mounting pipe 61 and a rotating shaft 65.

First, the mounting pipe 61 has a cylindrical shape, one end of which is fixed to the outside of the first mounting bracket 11, and the other end is formed of an inclined surface 62 which is inclined at a predetermined angle.

First and second locking grooves 63 and 64 are formed at the highest and lowest points of the inclined surface 62, respectively.

In addition, the rotation shaft 65 is inserted into the mounting pipe 61 so as to be inserted into the first mounting bracket 11 for a predetermined period.

The rotary shaft 65 is formed in the end corresponding to the inclined surface 62, the lever 67 is fixed to the engaging grooves (63) 64 to fix the rotation of the rotary shaft 65 is formed, the lever The other end protrudes on the mounting pipe 61 and is inserted into the insertion hole 51 in accordance with the rotation operation of the 67.

Here, the rotation shaft 65 is formed smaller than the inner diameter of the insertion hole 51 so that the outer diameter of the other end is inserted into the insertion hole 51, the mounting so as not to be caught and separated on the mounting pipe 61 It is preferable that the pipe 61 be formed larger than the inner diameter of the pipe 61.

That is, when the lever 67 of the rotation shaft 65 is located on the first locking groove 63 of the inclined surface 62, the fixing means 60, as shown in (S1) of Figure 4, the rotation The other end of the shaft 65 does not protrude from the mounting pipe 61.

In this case, the main block 41 is maintained in a rotatable state on the first mounting bracket 11 about the hinge pin 47.

On the other hand, when the lever 67 of the rotary shaft 65 is rotated along the inclined surface 62 and positioned on the second locking groove 64, as shown in (S2) of Figure 4, the rotation The other end of the shaft 61 is in a state protruding from the mounting pipe 61.

In this case, the other end of the rotary shaft 65 is inserted into the insertion hole 51 so that the main block 41 is fixed on the first mounting bracket 11 and at the same time, the lower arm support unit ( As the 20 is fixed, the lower arm 9 remains undried even when the load of the lower arm 9 is transmitted.

The auxiliary block 45 is hinged to the front end of the second mounting bracket 13 through a hinge pin 47.

The auxiliary block 45 supports the other rear upper surface of the base plate 21.

The load absorbing unit 70 is mounted to the rear of the first mounting bracket 11, is connected to the lower side of the lower arm support unit 20, when the fixing means 60, the lower arm ( 9) absorbs the load applied to the lower arm support unit 20.

In this case, the load absorbing unit 70 is mounted through the connecting plate 17, the connecting plate 17 is upwardly perpendicular to the bogie 3 on the rear side of the first mounting bracket (11). It protrudes, and the slots 19 are formed on both sides of the cross section at predetermined intervals, respectively.

In this embodiment, the load absorbing unit 70 is composed of a hinge bracket 71, the connection bracket 73, and the gas spring (75).

First, the hinge bracket 71 is mounted to enable position adjustment on each slot 19 of the connecting plate 17.

The connection bracket 73 is fixed at the rear center of the rear side of the base plate 21.

The gas spring 75 has a rear end hinged to the hinge bracket 71 and a rod end hinged to the connection bracket 73.

The gas spring 75 absorbs the load generated from the lower arm support unit 20 through the hinge bracket 71 and the connection bracket 73, and returns the lower arm support unit 20 to its original state. Will be

Hereinafter, the operation and operation of the lower arm support device according to an embodiment of the present invention configured as described above will be described in detail.

5 is an operation state diagram according to the vehicle type of the lower arm support apparatus according to an embodiment of the present invention, Figure 6 is a step-by-step operating state diagram according to whether or not the fixing means of the lower arm support apparatus according to an embodiment of the present invention.

First, when the vehicle body frame 5 is seated on the trolley 3, and is transferred to the chassis process for mounting the suspension assembly 7, the operator may perform the first and second supporters 23 and 25. The supporter corresponding to the position of the lower arm 9 is selected.

When the corresponding supporter corresponding to the lower arm 9 is the first supporter 23, as shown in FIG. 5 (S1), the operator rotates the second supporter (which is rotated to the rear of the base plate 21). With 25) intact, the next operation is performed.

On the other hand, when the supporter corresponding to the lower arm 9 is the second supporter 25, as shown in (S2) of FIG. 5, the operator may be perpendicular to the base plate 21. After the two supporters 25 are rotated, the upper part of the second supporters 25 is pressed.

Then, both ends of the second supporter 25 come into contact with the base plate 21 through the mounting holes 27 formed in slots at both ends of the second supporter 25. 25 is fixed in the vertical state on the base plate 21.

Therefore, the second supporter 25 supports the lower portion of the lower arm 9.

Here, the rotary shaft 65 is the insertion hole 51 of the main block 41 of the other end as the lever 67 rotated along the inclined surface 62 is fixed on the first locking groove (63). Is inserted into the main block 41 to fix the main block 41.

In this case, the lower arm 9 maintains a horizontal state at an angle that is easy to work through the lower arm support unit 20, and in this state, the worker works as the mounting assembly of the suspension assembly 7 works. Efficiency is improved and efficient work can be performed.

On the other hand, when the suspension assembly of the lower arm 9 is required during the mounting operation of the suspension assembly 7, as shown in FIG. 6 (A), the operator has a lever 67 of the rotary shaft 65 The fixed state of the main block 41 is released by rotating to catch the second locking groove 64.

Then, the base plate 21 receives the load of the lower arm 9 from the second supporter 25 supporting the lower arm 9 and sags toward the bogie 3. At this time, the gas spring 75 absorbs the load of the lower arm 9.

Then, when the operation is completed, as shown in (B) of Figure 6, the lower arm support unit 20 is returned to the original position horizontal to the bogie 3 by the elastic force of the gas spring (75) In this case, the worker fixes the main arm 41 through the fixing means 60 to fix the lower arm support unit 20 in a horizontal state.

Here, the gas spring 75 provides the same elastic force to the lower arm support unit 20 even when working for a long time.

The stopper 43 functions to adjust the rotation angle of the main block 41 rotated about the hinge pin 47 by adjusting the length of the bolt 55 by tightening and loosening the bolt 55. Through this stopper 43, the deflection angle of the lower arm support unit 20 can be adjusted.

Therefore, when the lower arm support device 1 according to the embodiment of the present invention configured as described above is applied, when the suspension assembly 7 is mounted on the body frame 5 seated on the trolley 3, the lower By including the lower arm support unit 20, the position control unit 40, and the load absorbing unit 70 to support the lower portion of the arm (9), the lower arm (1) rotatably connected to the vehicle body frame (5) It is possible to prevent the deflection of 9) to improve workability, and to selectively apply the first and second supporters 23 and 25 so that they can be shared in response to multiple models.

In addition, when the deflection phenomenon of the lower arm 9 is required during operation, the lower arm support unit 20 may be deflected by one rotation operation through the fixing means 60, and the gas spring ( By applying the load absorbing unit 70 applying 75), the lower arm support unit 20 provides the same elastic force even during long time operation to prevent the occurrence of positional deviation and to maintain the working position while maintaining work efficiency and work Improve your efficiency.

As mentioned above, although this invention was demonstrated by the limited embodiment and drawing, this invention is not limited by this and is given by the person of ordinary skill in the art to the following, Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

1 is a configuration diagram of a bogie to which a lower arm support device according to an embodiment of the present invention is applied.

Figure 2 is a perspective view of a lower arm support device according to an embodiment of the present invention.

Figure 3 is an exploded perspective view of the lower arm support device according to an embodiment of the present invention.

Figure 4 is a step-by-step operating state diagram of the fixing means applied to the lower arm support device according to an embodiment of the present invention.

5 is an operation state diagram according to the vehicle type of the lower arm support device according to an embodiment of the present invention.

6 is a step-by-step operating state diagram according to whether or not the fixing means of the lower arm support device according to an embodiment of the present invention.

Figure 7 is a block diagram of a lower arm support device according to the prior art.

Claims (7)

In the lower arm support device for supporting the lower portion of the lower arm rotatably connected to the body frame when mounting the suspension assembly to the body frame seated on the bogie, First and second mounting brackets mounted at predetermined intervals corresponding to the position of the lower arm on the bogie; A lower arm support unit having a rear side inserted between the respective mounting brackets to support a lower portion of the lower arm; A position control unit mounted inside each of the mounting brackets to support a rear side of the lower arm support unit, and regulate the lower arm support unit; And And a load absorbing unit mounted to the rear of the first mounting bracket and connected to a lower side of the lower arm supporting unit to absorb a load applied to the lower arm supporting unit from the lower arm. The method of claim 1, The lower arm support unit A base plate having a rear end disposed between the mounting brackets and supported by the position control unit; A first supporter mounted on an upper end of the base plate; And The lower arm support device, characterized in that the second supporter of the "C" shape hinged to both sides of the first supporter through the slot-type mounting holes formed on both ends. The method of claim 2, The first and second supporters, the lower arm support device, characterized in that the first and second contact pads are mounted on the upper surface, respectively. The method of claim 2, The position control unit A main block having a front end hinged through a hinge pin at the front inner side of the first mounting bracket, supporting one side of the rear upper surface of the base plate, a locking protrusion formed at the other end thereof, and an insertion hole formed at one side of the cross section. ; A stopper mounted through a mounting part formed on the first mounting bracket at a position corresponding to the locking protrusion, and adjusting the inclination of the main block by the locking protrusion when the main block is rotated; And A front end portion of the second mounting bracket is hinged through the hinge pin is connected to the lower arm support device, characterized in that consisting of an auxiliary block for supporting the other side of the rear upper surface of the base plate. The method of claim 4, wherein The stopper is a lower arm support device, characterized in that consisting of a nut which is fixed to the lower portion of the mounting portion so as to be able to adjust the height toward the locking projection, and a bolt fastened to the nut. The method of claim 4, wherein Fixing means for fixing the main block is mounted on the outside of the first mounting bracket in a position corresponding to the insertion hole, The fixing means A mounting pipe having one end fixed to an outer side of the first mounting bracket and the other end formed with an inclined surface that is inclined at a predetermined angle, and a first and second locking grooves formed at the highest and lowest points of the inclined surface, respectively; And It is inserted into the mounting pipe so as to be inserted into the mounting pipe for a predetermined period on the first mounting bracket, one end is formed with a lever fixed to the locking groove, the other end in accordance with the rotation operation of the lever into the rotating shaft is inserted into the insertion hole Lower arm support device, characterized in that made. The method of claim 2, The first mounting bracket further includes a connecting plate protruding upwardly in the vertical direction with the trolley on the rear side, and the slots being spaced apart at regular intervals on both sides of the cross section, respectively. The load absorbing unit A hinge bracket mounted on each slot of the connection plate to enable position adjustment; A connection bracket fixed to a rear center of the rear of the base plate; And A rear arm support device, characterized in that the rear end is hinged to the hinge bracket, the rod end is made of a gas spring hinged to the connection bracket.

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