KR100827865B1 - Apparatus and method for mono tube type shock absorber - Google Patents

Abstract

Apparatus and method for assembling a monotube type shock absorber are provided to assembly the monotube type shock absorber quickly by fixing a cylinder case to a cylinder fixing unit, and fixing a free-piston and a rod assembly to a cylinder case with a free-piston mounting unit and a rod assembly mounting unit. Apparatus and method for assembling a monotube type shock absorber comprises a frame unit(100), a cylinder fixing unit(200), a free-piston mounting unit(300), a rod assembly mounting unit(400), a fastening unit(500), and a control unit. The frame unit includes a central frame(103) and an upper frame(104). The cylinder fixing unit, which is located under the central frame, holds the lower part of the cylinder case. The free-piston mounting unit includes a fixing chuck, a loader, and a guider. The fixing chuck picks up a free-piston. The loader moves the picked free-piston up and down. The guider, which is installed at the lower part of the free-piston mounting unit, has an inner edge corresponding to the periphery of a piston rod of a rod assembly. The free-piston mounting unit moves in all directions to insert the free-piston in the cylinder case fixed to the cylinder fixing unit. The rod assembly mounting unit picks up the rod assembly, and moves in all direction to insert the rod assembly into the fixed cylinder case. The fastening unit includes a fixing jig, a nozzle unit, and a caulking member. The fixing jig fixes the free-piston and the rod guide of the rod assembly to the upper part of the cylinder case. The nozzle unit moves into a gas/oil inlet formed at the upper part of the cylinder case. The caulking member presses the outer part of the cylinder case to caulk the rod guide and the cylinder case.

Description

Apparatus and Method for Mono Tube Type Shock Absorber}

1 is a view schematically showing a cross-sectional structure of a conventional assembled monotube shock absorber.

2 is a view schematically showing the structure of a monotube shock absorber assembly according to the present invention.

3 is a view schematically showing the operation and structure of the monotube shock absorber assembly according to the present invention.

Figure 4 is a block diagram schematically showing the configuration and operation of the monotube shock absorber assembly according to the present invention.

5 is a view showing a specific operation sequence according to the process (A) in FIG.

6 is a view showing a specific operating sequence according to the process (B) in FIG.

7 is a view showing a specific operation sequence according to the process (C) in FIG.

8 is a view showing a specific operating sequence according to the process (D) in FIG.

9 is a view showing a specific operating sequence according to the process (E) in FIG.

10 is a view showing a specific operating sequence according to the process (F) in FIG.

<Description of Signs of Major Parts of Drawings>

1: Monotube Shock Absorber 10: Cylinder Case

11: gas / oil inlet 20: pre-piston

30: rod assembly 32: piston rod

34: road guide 36: piston valve

37: Euro 40: Gas Chamber

50: oil chamber 51: tension chamber

52: compression chamber 100: frame portion

101: lower frame 102: vertical frame

103: center frame 104: top frame

200: cylinder fixing portion 300: pre-piston mounting portion

310: loader 320: guider

330: fixed chuck 400: rod assembly mounting portion

500: fixing fixture 510: fixing jig

511: support jig 512: stopper jig

520: nozzle portion 530: caulking member

The present invention relates to a monotube shock absorber assembling apparatus and a method for assembling, and more particularly, to a device having a monotube shock absorber (mono tube type shock absorber) that can improve the ride comfort by the smooth damping force against the external input load. And it relates to a monotube shock absorber assembly and assembly method that can be assembled quickly and accurately through a single machine, without going through a process.

In general, a shock absorber for a vehicle is installed between a vehicle body and an axle, and is a dustproof and shock absorber that absorbs vibrations or shocks received from the road surface while driving the vehicle and improves ride comfort. Filled with oil and gas.

Such shock absorbers are classified into a twin tube type in which an oil storage tube consists of a double wall and a mono tube type consisting of a single wall according to the structure thereof.

1 is a view schematically showing a cross-sectional structure of a conventional assembled monotube shock absorber.

The monotube shock absorber 1 is a cylinder case 10 of a single tube type, a piston rod 32 inserted into the cylinder case 10 and the other end extending outward through an upper end of the cylinder case 10, It is installed at the lower end of the piston rod 32 to partition the inside of the cylinder case 10 into the upper tension chamber 51 and the lower compression chamber 52, the body of the tension chamber 51 and the compression chamber 52 A piston valve 36 in which a flow path 37 for oil flow therebetween is formed, and a pre-piston which is located inside the cylinder case 10 to partition the upper compression chamber 52 and the lower gas chamber 40. And a rod guide 34 or the like provided to slide the piston rod 32 at the upper end of the cylinder case 10.

Its action is that when the impact is input from the road surface as the vehicle travels, the piston rod 32 reciprocates up and down, and accordingly, the upper tension chamber 51 and the upper tension chamber 51 through the flow passage 37 of the piston valve 36. As the oil moves and flows between the lower compression chambers 52, a damping force is generated to alleviate the input shock.

At this time, the pre-piston 14 moves downward when the piston valve 36 moves downward to compress the gas in the gas chamber 40, and when the piston valve 36 moves upward, Move to the top to restore the position.

That is, the pre-piston 20 is compensated by self-moving by the volume of the piston rod 32 which is drawn out to the outside or drawn in according to the movement of the piston rod 32, the damping force action through the piston valve 36 To serve the purpose.

When describing the pre-piston 20 in detail, in order to distinguish between the compression chamber 52 of the upper portion filled with the oil and the gas chamber 40 of the lower portion filled with the gas in the horizontal direction with respect to the cylinder case 10 It is provided, and in order to reduce the weight is mainly formed of aluminum (Al), and the upper and lower surfaces are formed with a recessed groove recessed a predetermined depth.

Since the outer circumferential surface is in close contact with the inner circumferential surface of the cylinder case 10, the oil and the gas in the gas chamber 40 of the compression chamber 52 may leak and be mixed with each other through a close gap, so as to prevent this from occurring. O-ring grooves are formed along the circumferential direction on the outer circumferential surface, and rubber o-rings, which are sealing means, are installed to be pressed against the inner circumferential surface of the cylinder case 10 to ensure sealing properties.

In the conventional apparatus and method for assembling the monotube shock absorber, the cylinder case 10 is divided into upper and lower parts by the pre-piston 20 to inject gas into the lower gas chamber 40, and the rod assembly 30 ) Is inserted into the rod guide 34 to seal the upper opening of the cylinder case 10, and the process of injecting oil into the oil chamber 50 is complicated, each process is made independently, It requires a mechanical device according to the process, there is a problem that the assembly work is difficult and the working time is long.

The present invention is to solve the above problems, the cylinder case is fixed to the cylinder, the pre-piston fixing unit and the rod assembly mounting portion controlled by the control unit, the pre-piston and the rod assembly is uniformly the cylinder case The purpose of the present invention is to provide a monotube shock absorber assembly and a method for assembling the monotube shock absorber, which does not require the use of other mechanical devices, and the assembly work can be simplified to shorten the working time.

In order to solve the technical problem as described above, the present invention, the cylinder case of the monotube type, while the upper and lower partitions the oil chamber of the upper oil filled in the lower portion of the cylinder case and the lower gas filled chamber A monotube shock absorber assembly for assembling a monotube shock absorber composed of a pre-piston and a rod assembly to be moved, comprising: a frame portion including a center frame and an upper frame positioned above the center frame; A cylinder fixing part positioned downward of the center frame part to hold a lower portion of the cylinder case and vertically fix the lower portion of the cylinder case; Located below one side of the upper frame, the lower end is provided with a fixed chuck for picking up the pre-piston and a long loader that can move up and down above the pick-up prepiston picked up, the lower one side is the end of the rod A guider having an inner circumference corresponding to the piston rod circumference of the assembly and having one open shape is provided to correspond to the cylinder fixing part for inserting the pre-piston into the cylinder case fixed to the cylinder fixing part. Pre-piston mounting portion to flow back and forth, left and right, up and down; Positioned below one side of the upper frame, and picks up the rod assembly to the lower end, the front and rear, left and right, corresponding to the cylinder fixing portion to insert the rod assembly inside the cylinder case fixed to the cylinder fixing portion, A rod assembly mounting portion flowing up and down; Located in the upper portion of the center frame, the through hole is formed in the center wider than the upper end of the cylinder case, and fixed to temporarily fix the rod guide of the pre-piston and the rod assembly inside the cylinder case in the upper portion of the cylinder case A gas / oil inlet is formed at one side of the upper end of the cylinder case fixed by the jig and the fixing jig, and the pre-piston and the rod assembly are installed in the cylinder case and the nozzle unit which flows in a horizontal direction to be inserted into the gas / oil inlet. Combination fixing portion consisting of a caulking member for pressing the outer peripheral portion of the cylinder case so as to caulk the rod guide and the cylinder case after being coupled; And a control unit receiving power to control driving of the pre-piston mounting unit, the load assembly mounting unit, and the coupling fixing unit. Characterized in that comprises a.

In addition, the fixing jig forms a pair to approach and hold the upper end of the cylinder case fixed to the cylinder fixing portion from both sides and the support jig in which a ground groove corresponding to the outer periphery of the cylinder case is formed; And a stopper jig formed in a horizontal flow inward and outward so that each of the support jig penetrates into an inner side of the support jig and is inserted inward in the radial direction of the cylinder case from an upper end of the cylinder case.

In addition, the cylinder fixing portion is characterized in that it flows back and forth, left and right, up and down.

The pre-piston mounting portion, the rod assembly mounting portion, and the cylinder fixing portion may be connected to the XY axis driving portion and the XY axis driving portion which are linearly reciprocated back and forth, left and right by a linear servomotor under the control of the controller, to allow height adjustment. It is characterized in that it is possible to flow back and forth, left and right, up and down, including a height adjustment unit for linear reciprocating movement up and down on the Z axis.

In addition, a monotube cylinder case, a monotube consisting of a pre-piston and a rod assembly which are moved while partitioning an oil chamber of an upper portion filled with oil and a gas chamber of a lower portion filled with gas inside a lower portion of the cylinder case. A monotube shock absorber assembly method for assembling a shock absorber of the type, comprising: a cylinder case fixed to a cylinder fixing part, and a prepistone picked up to a fixed chuck by a pre-piston mounting part descending to be inserted and coupled to an upper end of the cylinder case; Pressing the upper portion of the pre-piston downward with the loader of the pre-piston mounting unit, and injecting gas into the gas / oil inlet of the cylinder case through the nozzle unit; A support jig holding the upper outer surface of the cylinder case, the stopper jig being attached to the upper part of the cylinder case and the pre-piston, and the loader being separated; The load assembly mounting portion is lowered so that the load assembly is located above the prepiston, the guider of the prepiston presses the rod guide of the rod assembly downward, and the stopper jig is released, and the rod assembly is inside the cylinder case. Inserting and lowering the docker jig into the binding groove of the rod guide; And the oil is introduced into the oil chamber through the nozzle unit, and the guide member presses the rod guide downward so that the sealing member of the rod guide is positioned below the gas / oil inlet as the stopper jig is separated from the nozzle unit. While being removed, the supporting jig is separated; characterized in that made.

In addition, the step of the stopper jig docked in the binding groove of the rod guide, after the stopper jig docked in the binding groove, the step of extracting air to the gas / oil inlet through the nozzle portion; characterized in that it further comprises a It is done.

In addition, after the nozzle portion is removed, after the support jig is released, the caulking member of the coupling fixing part presses a predetermined position of the cylinder case, and cocks the binding groove of the rod guide to fix the rod guide and the cylinder case. , The step of combining and the guider is separated;

Hereinafter, the present invention will be described with reference to the accompanying drawings, and in the following description, when it is determined that a detailed description of a related well-known function or configuration may unnecessarily obscure the subject matter of the present invention, The description may be omitted.

2 is a view schematically showing the structure of the monotube shock absorber assembly according to the present invention, Figure 3 is a view schematically showing the operation and structure of the monotube shock absorber assembly according to the present invention, Figure 4 Block diagram schematically showing the configuration and operation of the monotube shock absorber assembly according to the present invention, Figures 5, 6, 7, 8, 9, 10 are (A), (B), (C) in FIG. , (D), (F) is a diagram showing the specific operation procedure according to the process. Referring to the drawings, the monotube shock absorber assembly of the present invention is frame unit 100, cylinder fixing portion 200, pre-piston mounting portion 300, rod assembly mounting portion 400, coupling fixing portion 500 And a controller (not shown).

The frame unit 100 includes a lower frame 101, a vertical frame 102, a center frame 103, and an upper frame 104.

The bottom frame 101 is supported by the bottom portion in contact with the ground, the vertical frame 102 is composed of a pair connected to the upper both sides of the lower frame, the center frame 103 is both ends of the vertical frame 102 It is connected to the middle portion of the () is formed so as to slide up and down, the upper frame 104 is formed so that both ends are respectively connected to the upper end of the vertical frame (102).

The cylinder fixing part 200 is positioned below the center frame part 100 to hold the lower part of the cylinder case 10 to fix it vertically. In addition, the cylinder fixing part 200 is preferably installed to be movable back and forth, left and right, up and down.

The pre-piston mounting unit 300 includes a loader 310, a guider 320, and a fixed chuck 330, and is positioned below one side of the upper frame 104.

The lower end of the pre-piston mounting portion 300 is provided with a fixed chuck 330 for picking up the pre-piston 20, the inner center of the pre-piston mounting portion 300 is predetermined above the pre-piston 20 picked up It is provided with a loader 310 having a length, the height can be adjusted up and down.

The lower one side of the pre-piston mounting portion 300 is formed to extend to a predetermined length, the end of which has an inner circumference corresponding to the circumference of the piston rod 32 of the rod assembly 30, the one 'open' shape The guider 320 is formed to be provided.

The pre-piston mounting part 300 corresponds to the cylinder fixing part 200 in order to insert the pre-piston 20 into the cylinder case 10 fixed to the cylinder fixing part 200. It is preferable to flow up and down.

The load assembly mounting unit 400 is positioned below one side of the upper frame 104.

The rod assembly 30 is picked up at the lower end of the rod assembly mounting unit 400 to insert the rod assembly 30 into the cylinder case 10 fixed to the cylinder fixing unit 200. Corresponding to the fixing part 200 is formed to flow back and forth, left and right, up and down.

The control unit (not shown) receives power to control the driving of the pre-piston mounting unit 300, the load assembly mounting unit 400, and the coupling fixing unit 500.

At this time, the pre-piston mounting portion 300, the rod assembly mounting portion 400 and the cylinder fixing portion 200 is movable by the XY axis drive unit (not shown) and the height adjustment unit (not shown) to move back and forth, left and right, up and down. do.

The XY axis driver is linearly reciprocated back and forth, left and right by a linear servo motor under the control of the control unit (not shown), the height adjuster is connected to the XY axis driver to adjust the height up and down on the Z axis The linear reciprocating motion allows the pre-piston mounting portion 300, the rod assembly mounting portion 400, and the cylinder fixing portion 200 to be movable back and forth, left and right, and up and down.

The coupling fixing part 500 includes a fixing jig 510, a nozzle part 520, and a caulking member 530, and is positioned above the central frame 103.

The fixing jig 510 is formed in the center of the coupling fixing part 500 by a predetermined size wider than the upper end of the cylinder case 10, the pre-piston 20 and the rod assembly 30 inside the through hole. Is formed to temporarily fix the rod guide 34 of the cylinder case 10 in the upper portion.

A gas / oil inlet 11 is formed at one side of the upper end of the cylinder case 10 fixed by the fixing jig 510, and the nozzle unit 520 is horizontally inserted into the gas / oil inlet 11. It is formed to flow in the direction.

The caulking member 530 is coupled to the cylinder case 10 to coke the rod guide 34 and the cylinder case 10 after the pre-piston 20 and the rod assembly 30 are coupled to the cylinder case 10. The outer circumference of a predetermined portion of the) will be pressed.

The fixing jig 510 includes a support jig 511 and a stopper jig 512.

The supporting jig 511 is formed in a pair to approach and hold the upper end of the cylinder case 10 fixed to the cylinder fixing part 200 from both sides. The support jig 511 is formed in a semicircular longitudinal section, and has a ground groove corresponding to the outer circumference of the cylinder case 10.

The stopper jig 512 penetrates into the inner side of the supporting jig 511 and is inserted into the inner side of the cylinder case 10 in a predetermined depth in the radial direction of the cylinder case 10, so as to horizontally flow inward and outward. A pair is formed. The stopper jig 512 temporarily prevents the pre-piston 20 and the rod guide 34 inserted into the cylinder case 10 from escaping upward.

The operation relationship of the present invention having the configuration as described above will be described.

Referring to FIG. 5, the cylinder case 10 is fixed to the cylinder fixing part 200, and the pre-piston 20 is picked up by the fixing chuck 330 of the pre-piston mounting part 300. The piston mounting unit 300 is lowered, and the pre-piston 20 picked up by the fixing chuck 330 is inserted into the upper end of the cylinder case 10 (S100).

Referring to FIG. 6, the nozzle unit 520 approaches the upper portion of the cylinder case 10 while the upper portion of the prepiston 20 is pressed downward by the loader 310 of the prepiston mounting unit. Gas is injected into the gas / oil inlet 11 formed at the upper portion of the cylinder case 10 through the nozzle unit 520 (S200).

Referring to FIG. 7, the fixing jig 510 approaches the upper portion of the cylinder case 10 to fix the cylinder case 10. The support jig 511 of the fixing jig 510 holds the upper outer surface of the cylinder case 10, and the stopper jig 512 is attached to the upper part of the cylinder case 10 and the prepiston 20. The loader 310 is separated from the cylinder case 10 in such a state that the cylinder case 10 is not separated upward (S300).

Referring to FIG. 8A, the loader 310 is separated from the cylinder case 10, and the rod assembly mounting unit 400 on which the rod assembly 30 is mounted is lowered above the cylinder case 10, thereby loading the rod. The assembly 30 is in a state located above the pre-piston 20 (S410).

8B, C, and D, while the guider 320 of the pre-piston mounting unit 300 presses the load guide 34 of the rod assembly 30 downward (S420), the stopper jig 512 is It is separated to the outside (S430), the rod assembly 30 is inserted into the cylinder case 10 inside.

Referring to FIGS. 8E and 8F, the stopper jig 512 is docked to the binding groove of the rod guide 34 again to prevent the upward movement of the rod guide 34 (S440) and the nozzle unit 520. ) Is inserted into the gas / oil inlet 11 of the upper portion of the cylinder case 10 to extract the air therein (S450).

Referring to FIG. 9A, after removing air from the oil chamber 50 through the nozzle unit 520, oil is introduced into the oil chamber 50 (S510). Referring to FIGS. 9B and C, the stopper As the jig 512 is separated, the guider 320 is positioned above the rod guide 34 to prevent the rod guide 34 from escaping upward (S520).

Referring to FIG. 9D, the guider 320 presses the rod guide 34 downward so that the sealing member S of the rod guide 34 is positioned below the gas / oil inlet 11. It is inserted (S530). In addition, the nozzle unit 520 is removed from the gas / oil inlet 11, and the support jig 511 is separated (S540).

Referring to FIG. 10, the support jig 511 is separated and the guider 320 is separated from the rod guide 34 while the rod guide 34 is inserted into the upper end of the cylinder case 10. While preventing, the caulking member 530 of the coupling fixing part 500 cocks a predetermined position of the cylinder case 10 corresponding to the engagement groove 35 of the rod guide 34 to the rod guide 34. ) And the cylinder case 10 are fixed and coupled, and the guider 320 is separated.

In this case, when the binding groove 35 of the rod guide 34 is located outside the upper end of the cylinder case 10, the gas / oil inlet 11 of the cylinder case 10 may be formed in the rod guide 34. It is positioned below the sealing member (S), to extract the air in the oil chamber 50 through the nozzle unit 520 to create a vacuum state or to inject oil into the oil chamber (50) Will be.

Then, when the binding groove 35 of the rod guide 34 is inserted into the cylinder case 10, the sealing member S of the rod guide 34 is the gas / of the cylinder case 10 It is positioned below the oil inlet 11, and is sealed to block the inside of the oil chamber 50 from the outside.

As such, although the invention has been described by way of limited embodiments and drawings, the invention is not limited thereto and is within the scope of equivalents of ordinary skill and the claims to be described below in the technical field to which the invention pertains. Various modifications and variations are possible, of course.

As described above, the monotube shock absorber assembly and the assembly method according to the present invention is fixed by the pre-piston fixing unit and the rod assembly mounting unit fixed to the cylinder case to the cylinder fixing portion, and controlled by the control unit, uniformly free By allowing the piston and the rod assembly to be coupled to the cylinder case, in assembling the monotube shock absorber, it is not necessary to use another mechanical device, and the assembly work is simple, thereby reducing the work time.

Claims (7)

Monotube type cylinder case, a monotube type consisting of a pre-piston and rod assembly which is moved while partitioning the upper oil chamber filled with oil and the lower gas chamber filled with gas in the lower inside of the cylinder case In the monotube shock absorber assembly device for assembling the shock absorber, A frame unit including a center frame and an upper frame positioned above the center frame; A cylinder fixing part positioned downward of the center frame part to hold a lower portion of the cylinder case and vertically fix the lower portion of the cylinder case; Located below one side of the upper frame, the lower end is provided with a fixed chuck for picking up the pre-piston and a long loader that can move up and down above the pick-up prepiston picked up, the lower one side is the end of the rod A guider having an inner circumference corresponding to the piston rod circumference of the assembly and having one open shape is provided to correspond to the cylinder fixing part for inserting the pre-piston into the cylinder case fixed to the cylinder fixing part. Pre-piston mounting portion to flow back and forth, left and right, up and down; Positioned below one side of the upper frame, and picks up the rod assembly to the lower end, the front and rear, left and right, corresponding to the cylinder fixing portion to insert the rod assembly inside the cylinder case fixed to the cylinder fixing portion, A rod assembly mounting portion which is vertically flown; Located in the upper portion of the center frame, the through hole is formed in the center wider than the upper end of the cylinder case, and fixed to temporarily fix the rod guide of the pre-piston and the rod assembly inside the cylinder case in the upper portion of the cylinder case A gas / oil inlet is formed at one side of the upper end of the cylinder case fixed by the jig and the fixing jig, and the pre-piston and the rod assembly are installed in the cylinder case and the nozzle unit which flows in a horizontal direction to be inserted into the gas / oil inlet. Coupling fixing portion consisting of a caulking member for pressing the outer peripheral portion of the cylinder case to caulk the rod guide and the cylinder case after being coupled; And A control unit which receives power and controls driving of the pre-piston mounting unit, the load assembly mounting unit, and the coupling fixing unit; Monotube shock absorber assembly, characterized in that consisting of. The method of claim 1, The fixing jig, A support jig which forms a pair to approach and hold the upper end of the cylinder case fixed to the cylinder fixing part from both sides, and a ground groove corresponding to the outer circumference of the cylinder case is formed inward; And A monotube shock absorber comprising: a pair of stopper jigs each penetrating into an inner side of the supporting jig to be horizontally flowed inward and outward so as to be inserted inward in the radial direction of the cylinder case from an upper end of the cylinder case. Assembly device. The method of claim 1, The cylinder fixing portion is a monotube shock absorber assembly, characterized in that the flow back and forth, left and right, up and down The method according to claim 1 or 3, The pre-piston mounting portion, the rod assembly mounting portion and the cylinder fixing portion, Including a linear servo motor according to the control of the control unit is connected to the XY axis driving unit for linear reciprocating movement in the front and rear, right and left and the XY axis driving unit and the height adjusting unit for linear reciprocating vertically up and down on the Z axis to enable height adjustment A monotube shock absorber assembling apparatus, characterized in that it can be moved back and forth, left and right, up and down. Monotube type cylinder case, a monotube type consisting of a pre-piston and rod assembly which moves up and down while partitioning the upper oil chamber filled with oil and the lower gas chamber filled with gas in the lower inside of the cylinder case In the monotube shock absorber assembly method for assembling the shock absorber, A cylinder case fixed to the cylinder fixing unit, and a prepiston picked up to the fixed chuck by the pre-piston mounting unit descending to be inserted and coupled to the upper end of the cylinder case; Pressing the upper portion of the pre-piston downward with the loader of the pre-piston mounting unit, and injecting gas into the gas / oil inlet of the cylinder case through the nozzle unit; A support jig holding the upper outer surface of the cylinder case, the stopper jig being attached to the upper part of the cylinder case and the pre-piston, and the loader being separated; The load assembly mounting portion is lowered so that the load assembly is located above the prepiston, the guider of the prepiston presses the rod guide of the rod assembly downward, and the stopper jig is released, and the rod assembly is inside the cylinder case. Inserting and lowering the docker jig into the binding groove of the rod guide; And The oil is introduced into the oil chamber through the nozzle part, and the guider presses the rod guide downward so that the sealing member of the rod guide is positioned under the gas / oil inlet as the stopper jig is separated, and the nozzle part is removed. While, the support jig is separated; monotube shock absorber assembly method comprising a. The method of claim 5, In the step that the stopper jig is docked in the binding groove of the rod guide, And after the stopper jig is docked in the binding groove, extracting air to the gas / oil inlet through the nozzle unit. The method of claim 5, After the nozzle unit is removed, the supporting jig is separated, And a caulking member of the coupling fixing part pressurizes a predetermined position of the cylinder case, cocks in the binding groove of the rod guide, and fixes and couples the rod guide and the cylinder case, thereby releasing the guider. How to assemble a monotube shock absorber.

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