JP5806594B2 - Front fork - Google Patents

Description

  The present invention relates to an improvement of a front fork.

  In general, the front fork suspends a front wheel in a straddle-type vehicle such as a motorcycle, and as shown in FIG. 5, an outer tube 1 and an inner tube 2 inserted into the outer tube 1 so as to be retractable. It comprises a suspension body that can be expanded and contracted.

  A suspension spring S10 that constantly urges the suspension device body in the extending direction is accommodated in the suspension device body. This suspension spring S10 elastically supports the vehicle body and prevents transmission of wheel vibrations due to road surface irregularities to the vehicle body during vehicle travel.

  Further, in the front fork, the vibration cannot be damped only by the suspension spring S10 and resonates depending on the vibration frequency. Therefore, the damper D is accommodated in parallel to the suspension spring S10 in the suspension body. The damper D suppresses the expansion and contraction movement of the suspension device main body.

JP 2004-286200 A

  In the front fork, it is required that various conditions such as damping force and spring reaction force of the front fork be changed in a short time as well as being lightweight and high performance.

  However, the conventional front fork has the following problems when the spring constant of the suspension spring S10 is changed as part of changing the conditions of the front fork.

  That is, the suspension spring S10 in the conventional front fork includes only a so-called internal suspension spring housed in the suspension apparatus main body. Thus, in order to change the spring constant, it is necessary to remove the cap member 10, pull out the suspension spring S <b> 10 from the suspension apparatus body, and insert another suspension spring having a different spring constant into the suspension apparatus body.

  Further, a reservoir R is formed between the suspension device main body and the damper D, and the working fluid is accommodated therein. Since the suspension spring S10 is disposed in the reservoir R, the working fluid is provided in the suspension spring S10. The suspension spring S10 is pulled out in a state where the is attached.

  Therefore, when the spring constant of the suspension spring S10 is changed in the conventional front fork, it takes time to replace the suspension spring S10 itself, and the amount of the working fluid must be adjusted along with the replacement of the suspension spring S10. It takes time.

  Therefore, an object of the present invention is to provide a front fork that can easily and quickly change the spring constant of the suspension spring S10.

Means for solving the above-mentioned problem is a front fork comprising an outer tube and an inner tube that is inserted into the outer tube so as to be retractable, and is provided with a telescopic suspension main body, in parallel with the outside of the suspension main body. An external suspension that is disposed and supported at one end of the outer tube or the inner tube and having the other end supported at the other side of the outer tube or the inner tube and urges the suspension body in the extension direction. The external suspension spring includes a spring and elastically supports the vehicle body via the outer tube or the inner tube .

  According to the present invention, since the external suspension spring that functions as a suspension spring is disposed outside the suspension device main body, the external suspension spring may be replaced in order to change the spring constant.

  Therefore, the front fork of the present invention can easily and quickly reduce the spring constant of the suspension spring as compared with the conventional front fork in which the spring constant cannot be changed without replacing the suspension spring housed inside the suspension apparatus main body. It becomes possible to change.

It is a front view which partially cuts and shows the front fork which concerns on one embodiment of this invention. It is the longitudinal cross-sectional view which expanded the ball joint part of the front fork which concerns on one embodiment of this invention, and was seen from the left side. It is the perspective view which decomposed | disassembled and expanded the guide in the front fork which concerns on one embodiment of this invention, and was seen from diagonally lower side. FIG. 2 is an enlarged front view showing a guide portion of the front fork shown in FIG. 1 partially cut away. It is a front view which partially cuts and shows the conventional front fork.

  A front fork according to an embodiment of the present invention will be described below with reference to the drawings. The same reference numerals given throughout the several drawings indicate the same or corresponding parts.

  As shown in FIG. 1, the front fork according to the present embodiment includes an outer tube 1 and an inner tube 2 that is inserted into the outer tube 1 so as to be retractable.

  Further, the front fork is arranged in parallel to the outside of the suspension device main body, and has one end supported on the inner tube side and the other end supported on the outer tube side to urge the suspension device main body in the extending direction. An external suspension spring S1 is provided.

  The front fork according to the present embodiment will be described below in detail. The front fork is mounted on a straddle-type vehicle such as a motorcycle and has a pair of suspension device members that stand on both sides of the front wheel and suspends the front wheel.

  FIG. 1 shows only one suspension device member F and omits the description of the other suspension device member. The configuration of the other suspension device member is the same as that of the one suspension device member F. Or different.

  And the said suspension apparatus main body which consists of the outer tube 1 and the inner tube 2 makes the outline of said one suspension apparatus member F. FIG. Although not shown, the outer tube 1 is attached to a vehicle body side steering shaft via a vehicle body side bracket. On the other hand, the inner tube 2 is connected to one end portion of an axle (not shown) via an axle-side bracket 20 fixed to the bottom portion (lower part in FIG. 1) of the inner tube 2.

  In addition, a damper D is disposed inside the suspension device main body composed of the outer tube 1 and the inner tube 2, and a reservoir R is formed between the damper D and the suspension device main body.

  The upper side of the reservoir R in FIG. 1 is closed by a cap member 10 attached to the end of the outer tube 1 on the vehicle body side (upper end in FIG. 1). Further, in the axle side bracket 20, a cylindrical holding portion 20a that supports the inner tube 1 is in close contact with the outer peripheral surface of the inner tube 2 via a seal 20b, and the holding portion 20a has a lower opening in FIG. 1 is attached to the inner peripheral surface of the holding portion 20a and the inner peripheral surface of a cylinder 5 to be described later, so that the lower side of the reservoir R in FIG. 1 is blocked. Yes.

  Further, a cylindrical gap (not shown) formed between the outer tube 1 and the inner tube 2 is attached to the inner periphery of the wheel side end portion (lower end portion in FIG. 1) of the outer tube 1. The inner tube 2 is closed by an annular oil seal 11 and a dust seal 12 that are in sliding contact with the outer peripheral surface of the inner tube 2.

  The reservoir R contains a working fluid, and is filled with gas on the upper side in FIG. 1 via its liquid level (not shown). The working fluid and gas in the reservoir R are held in the reservoir R by the above configuration and do not leak out of the suspension apparatus main body.

  Subsequently, the damper D disposed inside the suspension device main body composed of the outer tube 1 and the inner tube 2 is supported by the axle-side bracket 20 and stands on the axial center portion of the inner tube 1, A piston rod 6 that is held by the cap member 10 and is removably inserted into the cylinder 5, and a piston that is held at the tip (lower end in FIG. 1) of the piston rod 6 and slidably contacts the inner peripheral surface of the cylinder 5. 7.

  The damper D includes an annular rod guide 50 that is fixed to one end of the cylinder 5 on the upper side in FIG. The piston rod 6 is axially supported by an annular bearing 50a fitted to the inner periphery of the rod guide 50 so as to be movable in the axial direction (vertical direction in FIG. 1).

  Further, the damper D includes a base member 8 that is in close contact with the inner peripheral surface of the other side (lower side in FIG. 1) of the cylinder 5 via a seal 8a. And between this base member 8a and the said rod guide 50, while being filled with a working fluid, the said piston 7 is arrange | positioned. An extension side chamber A is formed above the piston 7 in FIG. 1, and a compression side chamber B is formed below the piston 7 in FIG. 1.

  The extension side chamber A and the pressure side chamber B communicate with each other through a flow path formed in the piston 7. The flow path of the piston 7 allows only the movement of the working fluid from the expansion side chamber A to the compression side chamber B, and permits only the movement of the working fluid from the compression side chamber B to the expansion side chamber A. It consists of a pressure side channel that does not.

  The extension-side flow path 7a is always open and closed with an extension-side damping valve V1 whose inlet is in communication with the extension-side chamber A and whose outlet is stacked on the pressure-side chamber B side of the piston 7. Yes. On the other hand, the pressure-side flow path (not shown) has an inlet always communicating with the pressure-side chamber B, and an outlet is closed by a pressure-side check valve C1 stacked on the extension side chamber A side of the piston 7 so as to be opened and closed. .

  Returning, the base member 8 is held at the tip of the base rod 80 that stands on the plug member 21. The base rod 80 is disposed in series with the base member 8 and has a disk-shaped partition wall 80b that is in close contact with the inner peripheral surface of the cylinder 5 via a seal 80a. And between this partition part 80b and the said base member 8, the liquid storage chamber C filled with a working fluid is formed. The space E between the partition wall portion 80b and the plug member 21 communicates with the outside air through a through hole 21c formed in the plug member 21.

  Further, in the cylinder 5, a through hole 5 a is formed at a position facing the liquid reservoir chamber C. The liquid reservoir C is always in communication with the reservoir R through the through hole 5a.

  Furthermore, the liquid reservoir chamber C communicates with the pressure side chamber C through a flow path formed in the base member 8. The flow path of the base member 8 includes an extension side flow path (not shown) that allows only movement of the working fluid from the liquid reservoir chamber C to the pressure side chamber B, and only movement of the working fluid from the pressure side chamber B to the liquid reservoir chamber C. It comprises a pressure side flow path 8b that allows

  The extension side flow path of the base member 8 (not shown) is opened and closed by the extension side check valve C2 whose inlet is always in communication with the liquid storage chamber C and whose outlet is stacked on the pressure side chamber B side of the base member 8. It is blocked as possible. On the other hand, the pressure side flow path 8b of the base member 8 has an inlet always communicating with the pressure side chamber B, and an outlet can be opened and closed by a pressure side damping valve V2 stacked on the liquid reservoir chamber C side of the base member 8. It is blocked.

  The pressure side check valve C1 and the extension side check valve C2 are configured to generate only a small resistance when the working fluid passes through the pressure side flow path of the piston 7 and the extension side flow path of the base member 8 (not shown). On the other hand, the extension side damping valve V1 and the pressure side damping valve V2 generate a relatively large resistance when the working fluid passes through the extension side channel 7a of the piston 7 and the pressure side channel 8b of the base member 8. The extension damping valve V1 and the compression damping valve V2 are configured to generate a main damping force in the damper D.

  When the front fork is extended so that the piston rod 6 retreats from the cylinder 5, the extension side chamber A is pressurized by the piston 7, and the working fluid in the extension side chamber A pushes and opens the extension side damping valve V <b> 1. It passes through the path 7a and moves to the pressure side chamber B.

  At this time, in the cylinder 5, the working fluid corresponding to the volume of the retracted piston rod is insufficient, so the extension side check valve C <b> 2 is opened, and the insufficient working fluid flows from the reservoir R through the through hole 5 a and the liquid reservoir chamber C. The base member 8 moves to the compression side chamber B through an extension side passage (not shown).

  On the other hand, at the time of compression of the front fork in which the piston rod 6 enters the cylinder 5, the pressure side chamber B is pressurized by the piston 7, so the pressure side check valve C1 is opened and the working fluid in the pressure side chamber B is not shown in the drawing of the piston 7. It passes through the pressure side flow path and moves to the extension side chamber A.

  At this time, in the cylinder 5, the working fluid corresponding to the volume of the piston rod that has entered becomes surplus, and this surplus working fluid pushes and opens the pressure side damping valve V <b> 2 and passes through the pressure side flow path 8 b of the base member 8. It moves to the reservoir R through the chamber C and the through hole 5a.

  Therefore, the damper D has a damping force due to the resistance when the working fluid passes through each flow path formed in the piston 7 and the base member 8 when the front fork in which the piston rod 6 protrudes and retracts in the cylinder 5 extends and contracts. Generated and restrains the front fork telescopic movement. Then, a change in the cylinder volume corresponding to the piston rod volume that appears and disappears in the cylinder 5 is compensated by the reservoir R.

  Further, in the front fork in the present embodiment, an adjuster 10a attached to the cap member 10 bypasses a flow path formed in the piston 7 and opens a bypass passage (not shown) that communicates the expansion side chamber A and the pressure side chamber B. The amount can be adjusted. Further, the spring seat 71 of the urging spring 70 that urges the pressure side check valve C1 in the closing direction is moved up and down in FIG. 1 by another adjuster 10b that is also attached to the cap member 10 to open the pressure side check valve C1. The pressure can also be adjusted.

  By the way, in the present embodiment, the suspension spring that elastically supports the vehicle body is arranged in parallel with the external suspension spring S1 arranged outside the suspension apparatus body and the outside suspension spring S1 inside the suspension apparatus body. It consists of an internal suspension spring S2. The external suspension spring S1 and the internal suspension spring S2 are coil springs that are spirally formed by winding a wire.

  The internal suspension spring S2 disposed inside the suspension device main body is interposed between the rod guide 50 that pivotally supports the piston rod 6 in the damper D and the cylindrical spring receiving member 13 attached to the cap member 10. Has been. In the present embodiment, the spring receiving member 13 can be moved up and down in FIG. 1 by another adjuster 10c attached to the cap member 10, and the reaction force by the internal suspension spring S2 can be adjusted. Yes.

And the external rod 3 arrange | positioned in parallel with a suspension apparatus main body has penetrated the inner side of the external suspension spring S1 arrange | positioned on the outer side of a suspension apparatus main body. One end 3a of the outer rod 3 on the lower side in FIG. 1 is connected to the inner tube 2 side. On the other hand, the other side which is the upper side in FIG. 1 of the external rod 3 is inserted through a guide 4 fixed to the outer tube 1 so as to be movable in the axial direction.

More specifically, a ball joint 9 is screwed into one end 3a of the external rod 3. As shown in FIG. 2, the ball joint 9 includes a bearing portion 90 connected to the outer rod 3, a ball 91 rotatably supported by the bearing portion 90, and the ball 91 attached to the axle side bracket 20. And a bolt 92 to be fixed. That is, one end 3 a of the external rod 3 is connected to the inner tube 2 via the ball joint 9 and the bracket 20.

  As shown in FIGS. 3 and 4, the guide 4 is a guide in which a clamp 40 fixed to the outer tube 1 and a bearing member 41 a that is formed in an annular shape and pivotally supports the outer rod 3 are fitted inside. A main body 41 and an annular fixing member 42 for fixing the guide main body 41 to the clamp 40 are provided.

  As shown in FIG. 3, the clamp 40 includes two annular portions 40a and 40b connected in the horizontal direction. One annular portion 40a has a notch in a part thereof, grips the inner tube insertion side opening end portion of the outer tube 1, and narrows the distance between the opposite end portions a and b to thereby increase the outer side of the outer tube 1. Fixed to. The other annular portion 40b has an inner diameter gradually increased in the axial direction (downward in FIG. 3), and a small inner diameter portion 40c and a medium inner diameter portion 40d connected to the small inner diameter portion 40c. A large inner diameter portion 40e connected to the inner inner diameter portion 40d, a first step portion 40f formed at the boundary between the smaller inner diameter portion 40c and the inner inner diameter portion 40d, the inner inner diameter portion 40d and the larger inner diameter portion 40e. And a second step portion 40g formed at the boundary.

  Subsequently, the annular guide body 41 including the bearing member 41a includes a flange portion 41b projecting outward, and a small outer diameter portion 41c continuous with the flange portion 41b in the axial direction.

  The fixing member 42 for fixing the guide body 41 to the clamp 40 has a screw groove 42a formed on the outer peripheral surface. The fixing member 42 is screwed onto the inner periphery of the large inner diameter portion 40e of the clamp 40 in a state where the small outer diameter portion 41c of the guide main body 41 is inserted into the fixing member 42. Accordingly, the flange portion 41 b is sandwiched between the first step portion 40 f and the fixing member 42, and the guide body 41 can be fixed to the clamp 40.

  Returning, as shown in FIG. 1, the external suspension spring S1 is interposed between the guide body 41 and the adjusting member 30 that is screwed to one side (the lower side in FIG. 1) of the external rod 3. The guide member 41 is urged in the direction in which the front fork extends, that is, in the upward direction in FIG. And the reaction force by this external suspension spring S1 can be adjusted by rotating the adjustment member 30 and moving it up and down in the axial direction of the external rod 3 in FIG.

  Further, an extension spring S3 that absorbs an impact when the front fork is most extended is provided above the external suspension spring S1 with the guide 4 interposed therebetween in FIG. The extension spring S3 is adjusted so that the other side (upper side in FIG. 1) of the outer rod 3 passes through the extension spring S3 and is screwed to the guide 4 and the other end 3b which is the upper end of the outer rod 3 in FIG. It arrange | positions between the members 31. In the present embodiment, the extension spring S3 is suspended from the adjustment member 31, and when the front fork extends and the adjustment member 31 and the guide 4 approach each other to some extent, the lower end of the extension spring S3 in FIG. Abuts against the guide 4 to generate a predetermined reaction force.

  The timing at which the extension spring S3 generates a reaction force can be changed by rotating the adjustment member 31 and moving it up and down in the axial direction of the external rod 3 in FIG. The outer diameter of the adjusting member 31 is set to be smaller than the small inner diameter portion 40c of the clamp 40, and when the external rod 3 is pulled out from the guide 4, it can be pulled out with the adjusting member 31 attached. .

  Next, the function and effect of the front fork according to the present embodiment will be described. In the front fork according to the present embodiment, the suspension spring that elastically supports the vehicle body is divided into an external suspension spring S1 that is disposed outside the suspension apparatus body and an internal suspension spring S2 that is disposed within the suspension apparatus body. .

  Therefore, when changing the spring constant of the suspension spring composed of the external suspension spring S1 and the internal suspension spring S2, the external suspension spring S1 may be replaced. Further, since the external suspension spring S1 is provided outside the suspension device body, it is not necessary to remove the cap member 10 and replace the suspension spring S10 in the suspension device body as in the conventional case, and the working fluid is lost. Nor. Thereby, the spring constant of the suspension spring can be changed easily and in a short time.

  Further, when the suspension spring S10 is composed of only one as in the prior art, the suspension spring S10 is thick, and it becomes bulky if the suspension spring S10 for changing the spring constant is prepared. However, in the present embodiment, the suspension spring is composed of the internal suspension spring S2 and the external suspension spring S1, and these are arranged in parallel. Therefore, the spring constant as the suspension spring is the same as that of the external suspension spring S1 and the internal suspension spring S1. This is the sum of the spring constants of the suspension spring S2.

  Therefore, the internal suspension spring S2 and the external suspension spring S1 can each be lighter than the conventional suspension spring S10, and even if the spring constant for changing the external suspension spring S1 is prepared, it is less bulky and less expensive. is there. It is also easy to set the spring constant of the suspension spring to a non-standard spring constant.

  Further, in the conventional front fork, the extension spring S3 is generally arranged between the rod guide 50 and the piston 7 as shown in FIG. And in order to change the timing which this extension spring S3 acts, an adjuster may be attached to the cap member 10 and an adjustment mechanism interlocked with this adjuster may be provided.

  However, when many adjusters such as the adjusters 10a and 10b for adjusting the damping force and the adjuster 10c for the internal suspension spring S2 are attached to the cap member 10 as in the present embodiment, the extension spring S3 acts. It may be difficult to provide an adjustment mechanism for changing the timing.

  Further, in the conventional front fork, when changing the extension spring S3 in order to change the spring constant of the extension spring S3, it is necessary to remove not only the cap member 10 but also the suspension spring S10 and the rod guide 50. That work is extremely difficult.

  However, in the present embodiment, as shown in FIG. 1, the extension spring S3 is not provided between the rod guide 50 and the piston 7, and the extension spring S3 is arranged outside the suspension device main body. The adjustment mechanism for changing the operation timing of the extension spring S3 is not complicated.

  In addition, since the extension spring S3 can be replaced simply by removing the adjustment member 31, the extension spring S3 can be replaced very easily as compared with the prior art.

  In the present embodiment, since the ball joint 9 is provided and the outer diameter of the adjusting member 31 for the extension spring S3 is set smaller than the inner diameter of the small inner diameter portion 40c of the clamp 40, the bolt 92 and the fixing member are fixed. By removing the member 42, it is possible to pull out the external rod 3 with the external suspension spring S1 and the extension spring S3 attached.

  Further, when only the external suspension spring S1 is replaced, the bolt 92, the bearing portion 90, and the adjustment member 30 for the external suspension spring S1 may be removed, and the replacement work of the external suspension spring S1 is easy.

  In the present embodiment, one end (lower end in FIG. 1) of the external suspension spring S1 is supported by the adjustment member 30, and one end (upper end in FIG. 1) of the extension spring S3 is supported by the adjustment member 31. Therefore, it is possible to easily adjust the reaction force by the external suspension spring S1 and the extension spring S3 by rotating the adjustment members 30, 31 to change the positions of the adjustment members 30, 31.

  Although preferred embodiments of the present invention have been described in detail above, it should be understood that modifications, variations and changes may be made without departing from the scope of the claims.

  For example, in the above embodiment, the front fork is an inverted front fork in which the outer tube 1 is fixed to the vehicle body side and the inner tube 2 is fixed to the axle side, but the inner tube 2 is fixed to the vehicle body side. The outer tube 1 may be an upright front fork fixed to the axle side. Further, the configuration of the damper D built in the front fork is not limited to the above, and another type of damper may be adopted.

  Moreover, in the said embodiment, although the one end part 3a of the outer rod 3 is being fixed to the inner tube side and the guide 4 is being fixed to the outer tube side, the one end part 3a of the outer rod 3 is to the outer tube side. The guide 4 may be fixed to the inner tube side.

  In the above embodiment, the guide main body 41 includes the bearing member 41a, and the bearing member 41a is in sliding contact with the outer peripheral surface of the outer rod 3 and pivotally supports the outer rod 3, but does not include the bearing member 41a. The guide body 41 and the external rod 3 may not be in contact with each other.

  The shape of the clamp 40 is not limited to the above, and the other annular portion 40b is formed in a C shape with a notch in part, and the outer rod 3 is movably inserted inside the annular portion. It may be. That is, the shape of the guide 4 can be appropriately selected as long as it is fixed to the other side of the outer tube 1 or the inner tube 2 and can receive the urging force of the external suspension spring S1.

  In the front fork according to the above-described embodiment, the external suspension spring S1 and the internal suspension spring S2 constitute a suspension spring. However, only the external suspension spring S1 may be provided. The spring constant can be changed more easily and in a shorter time than in the past.

A Extension side chamber B Pressure side chamber C Reservoir chamber C1 Pressure side check valve C2 Extension side check valve D Damper F Suspension device member R Reservoir S1 External suspension spring S2 Internal suspension spring S3 Extension spring S10 Suspension spring V1 Extension side damping valve V2 Pressure side damping Valve 1 Outer tube 2 Inner tube 3 External rod 4 Guide 5 Cylinder 6 Piston rod 7 Piston 7a Extension side channel 8 Base member 8b Pressure side channel 9 Ball joint 10 Cap member 11 Oil seal 12 Dust seal 13 Spring support member 20 Axle side bracket 21 Plug members 30 and 31 Adjustment member 40 Clamp 41 Guide body 42 Fixing member 50 Rod guide 70 Biasing spring 71 Spring seat 90 Bearing portion 91 Ball 92 Bolt

Claims (8)

In a front fork comprising an outer tube and a telescopic suspension body composed of an inner tube inserted in and retractable into the outer tube,
The suspension apparatus main body is arranged in parallel on the outside of the suspension apparatus main body and has one end supported on one side of the outer tube or the inner tube and the other end supported on the other side of the outer tube or the inner tube. An external suspension spring that biases the
The front fork , wherein the external suspension spring elastically supports the vehicle body via the outer tube or the inner tube . An external rod having one end connected to one side of the outer tube or the inner tube and disposed in parallel to the outside of the suspension device
A guide that is fixed to the other side of the outer tube or the inner tube and that the other side of the outer rod is movably inserted in the axial direction;
2. The front fork according to claim 1, wherein the external suspension spring is disposed between the one end of the external rod and the guide while the external rod passes through the external suspension spring.   The front fork according to claim 1 or 2, further comprising an internal suspension spring disposed in parallel to the external suspension spring in the suspension device main body. On the other side of the outer rod projecting et al or the guide, the front of claim 2 or claim 3, characterized in that with a fully extended spring that absorbs the shock at the time of the most extension of the suspension device body fork.   The adjustment member screwed to one side of the external rod is movably engaged, and the adjustment member supports one end of the external suspension spring. The described front fork.   6. The front fork according to claim 4, further comprising an adjustment member threadably engaged with the other end portion of the external lot, wherein the adjustment member supports one end of the extension spring. . The guide includes a clamp that is fixed to the other side of the outer tube or the inner tube, a guide body that is formed in an annular shape and that is fitted with a bearing member that pivotally supports the outer rod, and the guide body that is An annular fixing member fixed to the clamp,
The clamp includes two annular portions connected in the horizontal direction, one of the annular portions grips the other side of the outer tube or the inner tube, and the other annular portion has an inner diameter in the axial direction. The diameter is gradually reduced toward the inner diameter portion, the inner diameter portion connected to the inner diameter portion, the larger inner diameter portion connected to the inner diameter portion, and the boundary between the smaller inner diameter portion and the inner diameter portion. A first step portion, and a second step portion formed at the boundary between the medium inner diameter portion and the large inner diameter portion,
The guide body includes a flange portion projecting outward and a small outer diameter portion connected to the flange portion. The small outer diameter portion is inserted into the fixing member, and the fixing member is disposed on the inner periphery of the large inner diameter portion. The front fork according to any one of claims 2 to 6, wherein the flange portion is sandwiched between the first step portion and the fixing member by screwing. One end portion of the outer rod is connected to one side of the outer tube or the inner tube via a ball joint, and the ball joint is rotatable to the bearing portion to which the outer rod is connected and the bearing portion. The front fork according to any one of claims 2 to 7, further comprising: a ball pivotally supported on the outer tube; and a bolt for fixing the ball to one side of the outer tube or the inner tube. .

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