TWI309214B - Suspension fork for bicycle - Google Patents

Description

1309214 IX. Description of the Invention: [Technical Field of the Invention] The present invention relates to a bicycle (suspension) front fork (sustaining fork) ° [Prior Art]

In recent years, the adjustable amount of the suspension fork for bicycles, or the adjuster of the damping force or the lockable person of the suspension function have been put on the market, and have become various functions. In particular, the amount of lockables for the suspension function is rapidly increasing, and even the low price band requires a lock function. However, most of the structures that lock the suspension function are sealed in the conventional crucible or the suspension fork itself, preventing the movement of the upper and lower sides by preventing the flow of the oil. [Problem to be Solved by the Invention] When the structure of the suspension function is blocked by the flow of the oil, the oil is sealed in the cylinder or the suspended front fork, and even the sealing structure must be considered to eliminate the oil leakage, so it is required to be very demanded. Its accuracy. Further, although it is necessary to have a function and a structure for selectively locking the state and locking the release state, the structure must also be in a portion having a very narrow space, with good precision and good surface finish. That is, in the conventional method of preventing the flow of oil and locking the suspension function, the cost becomes very high and the production amount is also limited. [Description of the Invention] The present invention solves the above problems in a single-handed problem, and is based on the generalization of the locking mechanism of the suspension function, and enables a large number of 1309214 to be produced at a lower price, and provides a real lock. The invention of the institution. [Means for Solving the Problem] In order to achieve the above object, the present invention provides a movable member that is rotatably attached to a fixing member that is rotatably attached to a suspension fork in an up-and-down direction, and is movable. When the relative positional relationship between the fixed member and the movable member is selected, a state in which the upper member can be actuated and a state in which the upper and lower directions are inoperable can be selected.

More specifically, in order to ensure easy-to-use and reliable functions, an indexing mechanism that can maintain the ON/OFF of the locking function at a certain position is provided, and in order to make the indexing mechanism in the up-and-down direction The state of the actuation is not maintained in the middle of the intermediate state in the state in which the upper and lower directions are inoperable, and any one of the fixed member and the movable member is provided with a mountain-shaped uneven portion, and is formed on the fixed member and the movable member. The auxiliary member of the mountain-shaped uneven portion that is engaged with the concave-convex portion is provided so as to be non-rotatable and movable in the vertical direction. Further, in a state in which the strength at the time of locking is ensured in the vertical direction, the members of the fixed member and the movable member are housed in the inner diameter side portion of the other member, up and down. In the state in which the direction is inoperable, 'the inner diameter side shape of the fixed member or the movable member is made into a bow-like shape', and the abutting surface of the fixed member and the movable member is made as large as possible, and 'for the up and down direction In the unactuable state, the impact cushioning member is relieved', and the impact cushioning member is provided on the end of the fixing member and/or the end of the movable member and/or the abutting surface of the fixed member and the movable member. [Embodiment]

1309214 Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings. The figure is a state in which the suspension function is activated (unlocked state) in the embodiment of the bicycle suspension front fork according to the present invention. Figure 2 shows the state in which the suspension function is blocked (locked state). Fig. 3 is a diagram showing the relationship between the fixed member and the movable member in an unlocked state. Fig. 4 is a diagram showing the relationship between the fixed member and the movable member in the locked state. Fig. 5 is an embodiment in which the positional relationship between the fixed member and the movable member cannot be maintained in the state of being movable in the up-and-down direction and the state in which the upper and lower directions are inoperable. Fig. 6 shows the intermediate position in the movable state in the up and down direction and the inoperable state in the up and down direction. Fig. 7 is an example of an indexing mechanism which cannot maintain the positional relationship between the fixed member and the movable member in the middle. According to the first embodiment of the present invention, the suspension forks are inserted into the forks 3a and 3b of the crown 2, inserted into the bottom casing 1 through the sleeve 15, and fixed by bolts 13 and fixed. The nut 14 is assembled so as to be movable in the up and down direction by a certain amount, and then the fork rod 16 which is pressed into the crown is assembled to the head pipe. The main spring 17 for suspension and the damper 18 are assembled into the fork 3a'. The strength of the main spring 17 can be adjusted by the adjustment knob 19. The fixing member 4, the movable member 5, the auxiliary member 6, and the auxiliary spring 8 are assembled into the fork pipe 3b. The auxiliary spring retainer 7 provided with a 6-hole hole at the lower portion is fixed to the substantially bow-shaped fixing member 4 by the screw 9, and the 6-hole hole of the auxiliary spring retainer 7 is inserted into the 6-head of the fixing bolt 1 3 At the time of the portion 1 3 a, the fixing member can be set to be non-rotatable above the fixing bolt.

1309214 An auxiliary member 6 which is movable in the vertical direction of the fixing member 4 and is rotatable is provided on the upper portion of the fixing member, and the assisting spring 8 provided on the outer peripheral portion of the fixing member is constantly applied with an elastic force upward. On the other hand, when the inner diameter portion of the auxiliary member is formed into a substantially bow-like shape similar to the fixing member, the fixing member can be made non-rotatable. A mountain-shaped uneven portion 6a is formed on the upper end surface of the auxiliary member 6, and is formed in a mountain-shaped uneven portion 5a that can be engaged with the lower portion of the movable member. The mountain-shaped uneven portion 5a that is engaged with the mountain-shaped uneven portion 6a of the auxiliary member 6 on the lower end surface has an elliptical hole 5b formed in the upper end surface, and the inner diameter portion is provided with a substantially bow-like hollow portion similar to the fixing member. The movable member 5 of 5 c is provided above the auxiliary member 6, and is constantly biased upward by the elastic force applied to the auxiliary member 6 by the auxiliary spring 8, and is often abutted against the screw to the fork 3b. In the top cover 1 1 . In this state, the upper end surface 4a of the fixed member 4 and the lower end surface 5d of the movable member 5 are provided with a plurality of gaps P. The top cover 10 is provided with a front end portion 10 a which is formed into an elliptical locking function switch button 10, and the elliptical front end portion 10a is inserted into the elliptical hole 5 b of the movable member 5, thereby rotating the switching button The movable member can be rotated. In the normal state, that is, the state in which the suspension function is activated, the case of riding the bicycle is used in the non-locked state shown in Fig. 1. In this state, the positional relationship between the fixing member 4 and the movable member 5 as shown in Fig. 3, that is, the fixing member becomes a positional relationship in the hollow portion 5c into which the movable member can be inserted, so that the suspended front fork becomes in the up and down direction. Actuable state. In this state, when the impact from the lower side is generated 1309214 due to the unevenness of the road surface, the bottom case 1 moves upward against the main spring 17 . At this time, the auxiliary spring 8 not only ejects the auxiliary member and the movable member upward, but also functions as a supplementary spring for suspension.

The elliptical front end portion 10a of the switching button is inserted into the elliptical hole 5b of the movable member, and the fixed member upper end surface 4a and the movable member lower end surface 5d are provided with a plurality of gaps p' so that the switching knob 10 is rotated by 90 degrees. At this time, the movable member 5 is also rotated by 90 degrees without great resistance, and becomes the state shown in Fig. 4. In this state, in order to prevent the insertion of the movable member 5 against the fixed member 4, the movement toward the upper side of the bottom case is also prevented, so that the suspension function is not activated. It becomes a locked state. Here, the movable member 5 and the auxiliary member 6 are provided with the mountain-shaped uneven portions 5a, 6a which are engaged with each other at 90 degrees. Therefore, the switching knob 10 and the movable member 5 must be rotated every 90 degrees. For example, the switching member 1 is rotated at 45 degrees, and the movable member 5 is also rotated by 45 degrees. Therefore, as shown in Fig. 6, the movable member and the auxiliary member are brought into contact with each other on the way of the mountain-shaped inclined surface. At the time of leaving the hand at this point, the auxiliary member is always urged upward by the auxiliary spring 8, so that on the one hand, the oblique direction faces the X-direction of the mountain shape, and the side slides into 'but is held in a non-rotatable fixed position. Since the auxiliary member held by the member 4 cannot be rotated, on the one hand, the movable member is rotated in the Y direction, and the movable member is returned to the position where the movable member is engaged with the auxiliary member as shown in Fig. 5. In other words, even when the switching knob and the movable member are held at a position other than 90 degrees, they are automatically corrected to the engagement position of every 90 degrees, so the movable member and the fixed member must be held. In the positional relationship shown in Fig. 3 or Fig. 4 1309214. That is, the position where the movable member can be inserted into the fixed member can only be held at the position where the area of the abutting surface is the largest (the oblique line portion in Fig. 4), which is the impact on the road surface when the suspension function is locked. It can be guaranteed to be held at the maximum strength. Moreover, even if a special indexing mechanism is not provided, the structure itself has an indexing role, so that no additional parts are required, and the combination is troublesome.

In addition, when the movable member and the auxiliary member are not provided with the mountain-shaped uneven portions 5a and 6a, and the surface is abutted, and the member having the mountain shape and the spring are separately prepared, the movable member can be moved in the vertical direction and the vertical direction. In the middle of the inoperable state, the positional relationship between the fixed member and the movable member cannot be maintained. Further, in the present embodiment, the mountain-shaped uneven portion is provided on the two members of the movable member and the auxiliary member. However, for example, one member may be formed in a mountain shape, and the steel ball may be held on the other member. At the same time, the same effect can be obtained. Further, as shown in Fig. 7, when the concave portion 10a is provided on the side surface of the switching knob 10, and the steel ball 20 is biased by the spring 21 and enters the concave portion, the same can be obtained. The effect of this embodiment is not limited to this, as long as it cannot be maintained in the middle of indexing. Further, in the present embodiment, although the convex portion or the concave portion of the mountain shape which is engaged with each other at 90 degrees is provided, it is of course not limited to 90 degrees. Further, in the present invention, in order to alleviate the impact or abnormal sound from the road surface at the time of locking, the gap p between the lower end surface 5d of the movable member 5 abutting and the upper end surface 4a of the fixing member 4 is provided in the lock. As shown in Fig. 2, the cushion member 1 2, specifically --10-30914, is provided with a cushioning member 12 in the upper end surface 4a of the fixing member 4. When the impact from the road surface is applied, the movable member relatively moves in the direction of the fixing member, first abutting on the slow member, and then the member is gradually compressed by a certain amount, and the movable member is fixed by the fixed member. And the stop 'when it is completely locked, it can alleviate the impact or abnormal sound from the road.

Further, even when the cushioning member 12 is provided on the end surface of the lower portion of the movable member and the end surface of the upper portion of the fixing member, the impact can be alleviated in the same manner, so that strength and durability can be improved. [Effects of the Invention] Conventionally, most of the construction is in which the oil is sealed in the shackle or the suspended front fork itself, and the movement of the oil is prevented from blocking the movement in the up and down direction, thereby locking the structure of the suspension function. Therefore, in the case of a structure that blocks the flow of the oil and locks the suspension function, the oil is sealed into the crucible or the suspended front fork, and even the sealing structure must be considered to eliminate the oil leakage, so the accuracy must be extremely required, and, although There must be a function and a structure to selectively lock the state and lock the release state, but the structure must also be in a very narrow space, with good precision and good surface finish. That is, in the conventional method of preventing the flow of oil and locking the suspension function, the cost becomes very high and the production amount is also limited. The present invention solves these problems in one fell swoop, and it is an invention of a reliable locking mechanism at a lower price and more mass production in accordance with the generalization of the locking mechanism of the suspension function. That is, by movably mounting the movable member rotatably mounted in the up and down direction with respect to the fixing member that is non-rotatably attached to the suspension fork -11 - 1309214

By selecting the relative positional relationship between the fixed member and the movable member, it is possible to select a state that can be actuated in the up and down direction and a state in which it is impossible to operate in the up and down direction, and a low price and mass production can be provided. Lock the mechanism.

Further, by providing an indexing mechanism that cannot maintain the positional relationship between the fixed member and the movable member on the way, a safe and reliable locking mechanism can be provided, and 'the uneven portion is formed on one of the fixed member or the movable member. The auxiliary member formed with the uneven portion that is engaged with the concave-convex portion on the other member is set to be impossible to rotate, and when it is movable in the up-and-down direction, it is not necessary to additionally provide an indexing mechanism. The positional relationship between the fixed member and the movable member can be prevented from being maintained on the way' thus providing a safer, less expensive and reliable locking mechanism. Further, any one of the fixing member and the movable member is configured to be housed in the inner diameter side portion of the other member, and when the inner diameter portion is formed into a substantially bow shape, the fixing member and the fixing member are The movable member is made as large as possible, and sufficient strength is secured when locked, and the shock absorbing member is disposed at the end of the fixing member and/or the end of the movable member and/or the abutment of the fixed member with the movable member When it is on the surface, it can alleviate the impact when it is locked, so it is advantageous in the strength surface, and the feeling when it is locked becomes good. [Simple description of the drawing] Figure 1 is a non-locking state diagram of the suspended front fork. Figure 2 is a locked state diagram of the suspended front fork. Fig. 3 is a diagram showing the relationship between the fixed member and the movable member when the lock is not locked. Fig. 4 is a diagram showing the relationship between the fixed member and the movable member when locked. Fig. 5 is an enlarged view of the internal structure of the non-locked state or the locked state. 1309214 Fig. 6 is a state diagram after the movable member is rotated by 4 5 * degrees from the unlocked state or the locked state. Figure 7 is an example of an indexing mechanism. [Description of component symbols] 1 ... bottom case 2 ... fork 3 a, 3 b ... fork tube 4... fixed member φ 5... movable member 6 .. auxiliary member 7 ... auxiliary spring Seat 8...Remove spring 9 ...screw 10...Switch button 1 1 ...top cover 12.. Slow member ^ 1 3 ...fixing bolt 14.. fixing nut 15... Sleeve 16... Fork lever 17.. Main spring 1 8 ... Damper 1 9 ... Adjustment knob 20... Steel ball 21... Spring-13-

Claims (1)

(1309214^年月月月曰修(更)本本 94 1 06 5 93 "Bicycle Suspended Fork" Patent Application (Amended on August 26, 2008) X. Patent Application: A suspension front fork for a bicycle, comprising: a non-rotatable fixing member and a rotatable movable member, wherein an outer diameter portion of the fixing member and the movable member is configured to be inside the other The shape of the diameter portion is substantially complementary. By rotating the movable member to at least one angular position, one of the fixing member and the movable member can enter and be received in the other, so that the movable member is opposite to the upper and lower sides. The fixing member moves, the bicycle suspension front fork is set to be movable in a vertical direction, and the movable member is rotated away from the at least one angular position, and the fixing member and the end surface of the movable member are coupled to the other The end faces of the person are overlapped and abut each other, and the bicycle suspension front fork is set in a state in which the up-and-down direction is inoperable. 2. The bicycle suspension fork according to claim 1, wherein the fixing member and the movable member are selectable in the up and down direction by forming an indexing mechanism that cannot maintain the positional relationship between the fixing member and the movable member on the way. The state of actuation 'and the state of being inoperable in the up and down direction. 3. The bicycle suspension fork according to the second aspect of the invention, wherein the concave and convex portions are formed on one of the fixing member or the movable member, and the concave and convex portions that are engaged with the concave and convex portions are formed on the other member. When the auxiliary member of the portion is set to be non-rotatable and is movable in the vertical direction, the positional relationship between the fixed member and the movable member cannot be maintained in the middle of the movable state in the vertical direction and the state in which the vertical direction is inoperable. , 1309214 - 4· For example, in the bicycle suspension front fork according to the first aspect of the patent application, in the state in which the upper and lower directions are not movable, the shape of the inner diameter side of the fixing member or the movable member is made into a bow shape, and The fixing member and the movable member are made as large as possible. 5. The bicycle suspension fork according to the first aspect of the invention, wherein the shock absorbing member is disposed at the end of the fixing member and/or movable in order to alleviate the impact during the unactuatable state in the up and down direction. The abutment surface of the member end and/or the fixed member and the movable member. 1309214 VII. Designated representative map: (1) The representative representative of the case is: Figure 1. (2) The symbol of the symbol of this representative figure is simple: 1 ... bottom case 2.. . fork 3a, 3b · ·. fork tube 4.. fixed member 5.. movable member 5 b... ellipse hole 6.. .Subsidy member 7.. .Subsidy spring bearing 8...Remove spring 9 ...screw 10...Switching knob 1 1...top cover 1 2 ...slow component 1 3 ...fixed Bolt #14...fixing nut 15... sleeve 16... fork lever 17.. main spring 18. damper 19... adjustment knob P... clearance. 8. If there is a chemical formula in this case, please disclose the chemical formula that best shows the characteristics of the invention: