TWM305166U - Bicycle frame having reversed four bar linkage system - Google Patents

Description

M305166 VIII. New description: [New technical field] This creation is a bicycle frame design with suspension function, especially a new type of suspension with effective reverse shocking effect by reverse four-bar linkage system. Bicycle rack. [Prior Art] In order to provide bicycles with better shock absorption performance and reduce the loss of riding energy, the bicycle industry has successively developed and designed various types of shock-absorbing bicycle frame designs. The more representative designs include: The front-turn point bicycle frame that is dried in the fifth figure, the forward (long) four-link system as shown in the sixth figure, and the forward (short) four-link system as shown in the seventh figure. A bicycle frame, and a reverse four-link system bicycle frame as shown in FIG. If the riding posture change, pedaling, chain pull, brake lock and just (four) are used to evaluate and analyze the performance of the existing shock absorber bicycle frame, there are still many shortcomings, which can be further Research improvements. For example, the forward-turning bicycle frame shown in Figure 5 pivots the lower end of the rear frame (B) to the front frame (A) and the front and rear frames (A) (B) And the formation of the forward point, ^ ^ between each has a shock absorber (C). This design, in the performance of avoiding brake lock, but because of the single-turn point to bear == side: there will be a good structural rigidity, and for the rider = force, so should be too direct and sensitive, It is easy to produce a guide... The anti-rush seat of the ride-in change causes the situation of the rear frame to interfere with each other, and the rear wheel... The trajectory swings, and the rear suspension is changed to the curved bamboo shooter. In the riding position, the M305166 rear frame (B) swings, causing the rider's pedaling force to be partially depleted by the compression or stretching shock absorber, causing the energy loss of the pedaling, and because The distance between the front frame (A) five-way pipe and the rear wheel axis is changed. 'The problem of chain slack and the phenomenon of stepping on the air or chain hitting, which hinders the handling and safety of riding and pedaling.

A bicycle frame of a forward (long) four-bar linkage system as shown in FIG. 6 is connected to the rear frame by an upper link (D) extending upward from the seat tube of the rigid frame (A) ( The front upper end of B) is connected to the rear hook of the rear vehicle $(B) by the lower link type (E) of the rear frame (A) behind the five-way pipe of the front frame (A), and is connected to the upper link (D) A shock absorber (C) is provided between the front frame and the front frame (A), wherein the thick arrow symbol in the drawing indicates the swing direction of the upper and lower links (D) (E) during the rear suspension operation, and the thin line arrow The symbol indicates the direction in which the upper and lower links (D) (E) are subjected to the force when stepping on. Such a design utilizes the Virtual Pivot Point (VPP) (B) of the upper and lower links (D) (E) to shift to produce a better swing trajectory and avoid brake locks. Death and chain pull will have a good performance, but due to the length of the underlying raft, the overall structural rigidity is poor, and when the rear suspension is activated, the virtual turning point (VPP) is detoured backwards and downwards. Swinging causes the swinging motion to be intensified, and when the pedaling or the rider changes the riding posture, the problem of energy loss on the pedaling is still generated. The bicycle frame of the forward (short) four-bar linkage system shown in the seven figures of the younger brother is connected by the seat tube of the front vehicle _ (Α) to the front of the rear frame (Β) On the upper end, the front of the five-way pipe is directly attached to the front of the f Λ, 逐, and 口

Assembly tolerance and sway of the lower link type of the short frame type M305166 The lower link (E) of the short frame type is connected to the front lower end of the rear frame (B), and the upper and lower links ( D) A shock absorber (c) is connected between (E). Such a design can partially solve the problem of structural rigidity of the forward four-bar linkage system by shortening the lower link (E). However, when the rear suspension is actuated, the virtual turn point (VPP) is backward. The downward curved arching oscillates, causing the swinging motion to be intensified, and the problem of pedaling energy loss is still generated when the pedal is stepped on or when the rider changes the riding posture. A bicycle frame of a reverse four-bar linkage system as shown in FIG. 8 is connected to the rear frame (B) by an upper link (D) extending downward from a seat tube of the front frame (A) The front upper end is connected to the lower end of the rear frame (B) (4) by the lower link (E) of the short frame type behind the five-way pipe of the front frame (A), and the front frame of the upper link (D) A shock absorber (C) is connected between the upper tubes of (A). In this design, when the rider steps on the pedal, the upper and lower links (D) (E) are designed to be offset by the different directions of the swinging force. When the rear suspension is actuated, the virtual turning point (vpp) is fine. The forward, nearly parallel arc-shaped trajectory 'can perform well in the rider's changing riding posture and pedaling', but because the rear axle reading system swings in a backward curved shape, it is prone to brake lockout and Chain pull and other issues, and (E) design, easy to enlarge the rear frame (edge 'performance in structural rigidity is not good

B [New Content] In order to solve the various types of shock absorbers and limitations, the creators have developed bicycle frames designed to improve shock absorption performance. The lack of a structural design of the bicycle frame produces the most M3 05166 with a reverse four-bar linkage system. The main purpose of the creation is to provide a self-lighting device with a reverse four-bar linkage system. 'It is mainly used by the seat tube of the front frame. The upper connecting rod member extending downward is connected to the rear upper end of the rear frame, and is connected to the lower rear end of the rear frame by a lower-length connecting rod member at the front upper portion of the five-way tube of the front frame. The shock absorber is connected between the front end of the rear upper fork and the upper tube of the front frame; the creation can be offset by the different swinging directions of the upper and lower connecting rod members when the rider steps on the pedal 2 In the case of the rear shock absorber, the virtual turning point is oscillated in a forward and upward curved path, and the bicycle frame of the conventional reverse four-link system can be better in the rider's changing riding posture and pedaling. The performance of the rear wheel axis position is close to a straight line, to avoid problems such as brake lock and chain pull, and can use the upper and lower link members of moderate length to improve the overall structural rigidity, effectively Let the bicycle frame reverse The four-bar linkage system produces optimized suspension performance. Based on the foregoing objects, the technical means used in the present invention is to provide a bicycle frame with a reverse four-bar linkage system, which includes: a front frame, an upper tube, and a front attached to the front end of the upper tube a tube, a seat tube coupled to the rear end of the upper tube, a lower tube coupled to the rear end of the front tube, and a five-way tube laterally fixed to the rear end of the lower tube, corresponding to the middle of the front side of the five-way tube a position of the toothed disc is provided with a pivoting seat; and a rear frame coupled to the front frame in a swingable manner, and is provided with a rear upper fork, a rear lower fork, a fixed rear portion and the rear a rear fishing rear end of the rear lower fork and a connecting seat fixed to the rear lower fork end; wherein the front end of the rear upper fork spans the seat tube from both sides of the seat tube, and the front end of the rear fork An M3 05166 upper link member 4 is connected to the front side tube surface of the upper tube below the upper tube to be disposed toward the rear of the pivot base and at the rear end of the rear fork. And a shock absorber is connected between the middle portion of the upper tube, wherein the front end of the connecting base is extended Laying down to the rear side of the five-way pipe, and connecting a lower link member between the front end of the connecting seat and the pivoting seat; ^ thereby, when the rear frame is actuated, the upper and lower links are The virtual turning point formed by the intersection is oscillated in the forward and upward arc, and the displacement trajectory of the rear wheel center is close to a straight line. Preferably, the shock absorber of the present invention is located substantially at the extended axis position of the rear upper fork. Preferably, the lower link member and the cross-bar are integrally connected to the middle of the two parallel side rods; the lower link member is integrally connected by a horizontal shaft tube 1 formed by the rear lower end of the two curved side bars; the shape of the rod frame Ο The bicycle frame with the reverse four-bar linkage system provided by the creation, the advantages and the enhancements can be at least included: 1. The creation is used for pedaling When, the direction of the force of the lower link member is not (four) listening (four) material, can effectively avoid the rider's pedaling force will be depleted by the shock absorber and cause energy loss, and will not be riding The rider changes the riding position. 2. In the process of post-shock operation, the displacement of the rear wheel axis is close to the straight line, which can keep the distance between the five-way pipe and the rear wheel axis unchanged. It can not only avoid brake lock and chain pull. The problem 'can solve the problem that the existing shock-absorbing bicycle frame will cause the stepping on the air or the chain back because the chain is slack M305166 phenomenon, effectively ensuring the handling and safety of riding. 'Work 3, this creation uses the upper and lower connecting rods of moderate length and rod-shaped type, which can achieve good structural rigidity of the bicycle frame with reverse four-bar linkage system. [Embodiment]

In order to understand the technical features and practical functions of the present invention in detail, and in accordance with the contents of the specification, the following further describes the preferred embodiment as shown in the following figure: The bicycle frame of the four-bar linkage system is preferably: the first is shown in the first three figures. The bicycle frame includes a frame (10) and a pivotal connection to the front frame (1 inch). Rear frame (20), and a shock absorber (3 〇) set on the front and rear frame (worker) (2 (8) bis); the front frame (10) is a close horizontal type The upper tube (worker 丄, - the front s which is connected to the front end of the upper tube (11) for the front of the bicycle to be combined (1 2} - is connected to the rear end of the upper f (1 1) for the combination of the bicycle seat: seat a tube (1 3 ), a five-way official (14) laterally fixed to the bottom end of the seat tube (13), and a lower tube (1 5) between the front tube (12) and the five-way tube (H) The upper tube (1 1 is available for the shock absorber (30) before the seat tube (13) is close to the upper frame (1 3 1 )) and is fixed to the lower tube surface of the middle portion One end pivot The connecting frame (1 1 1 ) and the front side pipe surface under the pipe (1 1 ) are fixed, and the M305166 is placed on the front side of the five-way pipe (1 4 ) at the position of the chainwheei. There is a pivoting seat (16); the rear frame (2 〇) is composed of a rear fork (2 1 ), a rear lower

(22) a rear hook (2 3 ) fixed to the rear end of the rear upper (21) and the rear lower fork (22), and a connecting seat (2 4 ) fixed to the front end (2 2 ) front end a fixing rod (2 5 ) connected between the front upper (2 丄) front section and the front lower fork (2 2 ) front end, and a connecting rod (131) and the rear upper X (21) front end Between the upper link member (26) and a lower link member (27) connected between the front end of the pivot base (16) and the connecting seat (24), etc. The connecting end (211) for pivoting the upper link member (26) and the shock absorber (30) is formed by the two sides of the seat tube (") crossing the seat t ("), and a front pole X ( 2 1 ) located at the rear of the seat tube ( 1 3 ) is provided with a frame rod (2 1 2 ) for the brake assembly; the aforementioned upper link member (26) is composed of a cross

The rod is integrally connected to the two parallel side rods (2 6 ; [) middle frame structure, and is matched with a shaft rod (2 6 2 ) to pivot the upper end of the Η-shaped rod-shaped upper connecting rod member (26) formed by the shank portion Connected to the seat tube (1 and coupled with a shaft (2 6 3 ) to pivotally connect the end to the rear upper fork (2 1 ) link member (26) to face the connecting seat (2 4) of the pivoting seat , the end of the front end of the connecting seat (24) 4) the rear side of the rear side of the pivot (2 4 1 3) of the connecting frame (1 3 1), the lower connecting end of the upper connecting rod member (26) 211), let the upper (1 6) rear configuration; fixed to the rear lower fork (2 2 ) in front of a pair of extensions to the five-way pipe (1); the aforementioned lower link (27 M305166) The U-shaped rod frame structure formed by a horizontal shaft tube (2 7 2 ) is connected to the lower end of the two curved side rods (2, 1 ), and is matched with a shaft (2, 3) to be U-shaped. The front end of the connecting rod member (27) is pivotally connected to the pivoting seat (16) of the front frame (10), and the horizontal shaft tube (27.2) is placed on the connecting seat (2 4). After the two pivoting ears (2 4 1 ), the rear lower end of the lower-shaped connecting rod member (2 7 ) is pivoted by the lever (2 7 4 ). After the link = frame (20) connecting the seat (24); '

The shock absorber (30) is a connecting end (1 1 1) and a connecting end 彳 2 1 1 ) of the rear upper fork (2 1 ) that are pivotally connected to both ends of the front frame (1 )), and An extension axis located at the rear upper (2 1 ); thus, using the aforementioned front frame (1 〇), rear frame (2 〇), and upper and lower link members (26) (27), The group constitutes a new bicycle frame with a reverse four-bar linkage system as shown in the first and third figures. Please refer to the first four figures. Using the reverse four-bar linkage system design of this creation, not only can the virtual turning point (VPP) of the bicycle rear frame (2 〇) displacement be maintained at the middle and high turning point. And the rear upper (2 1 ) directly compresses the shock absorber (30) which is located substantially on the extension axis of the rear upper fork (2 i ), which can make the suspension movement of the bicycle frame directly and smoothly smooth; During the vibration stroke, the virtual turning point (vpp) oscillates in an arc-shaped trajectory toward W, which can have a better performance than the conventional reverse four-bar linkage bicycle frame in terms of the rider's changing riding posture and pedaling. And let the displacement trajectory of the rear wheel axle center position be close to a straight line, and the distance between the five-way pipe (1 4 ) and the rear wheel axle center position can be kept unchanged, and problems such as brake lock, chain pull and slack can be avoided, and the ride is effectively ensured. Controllability of the ride 11 M305166 and safety; ) When the rider steps on the pedal, the lower link of the h (the force of the swing is different and the force is offset by each other, and the pedaling force of the rider-free will be Depletion of the action shock absorber Quantitative loss #, and can make the shock absorber performance of the bicycle frame not "to the rider to change the riding position, it has practical benefits. 曰In addition, the above-mentioned preferred embodiment of the creation is not for this creation. Any form of limitation, any one of ordinary skill in the art, without departing from the scope of the technical features of the present invention, the equivalent embodiment of the local modification or modification made by the disclosed technical content, And the technical features of the present invention are still within the scope of the features of the present invention. [Simplified description of the drawings] The first figure is a three-dimensional structure diagram of the preferred embodiment of the present creation. The third figure is a plan view of the structure of the preferred embodiment of the present invention. The fourth figure is a schematic diagram of the suspension operation after the preferred embodiment of the present invention. The fifth figure is the existing front-turn point bicycle frame. After the suspension operation diagram Ο The sixth diagram is the current suspension of the forward (long) four-link system bicycle frame. The seventh picture is the existing forward (short) four-link system The rear view of the bicycle frame is activated. The eight-figure diagram is the suspension operation of the existing reverse four-link system bicycle frame. 12 M305166 Schematic diagram.

[Main component symbol description] (1〇) Front frame (1 1 1) Link frame (1 3 ) Seat tube (1 4 ) Five-way pipe (1 6 ) Pivot seat (2 0 ) Rear frame (2 1 1) Connection end (2 2 ) Rear lower fork (2 4 ) Connection seat (2 5 ) Support rod (2 6 1 ) Side rod (2 7 ) Lower link member (2 7 2 ) Horizontal shaft tube (3 0 ) Shock absorber (A) Front frame (C) Shock absorber (E) Lower link (1 1 ) Upper tube (1 2 ) Front tube (1 3 1 ) Connection frame (1 5 ) Lower tube (2 1 ) Rear upper fork (2 1 2) mast (2 3 ) rear hook (2 4 1 ) pivot (2 6) upper link (2 6 2 ) ( 2 6 3 (2 7 1 ) side bar ( 2 7 3) ( 2 7 4 (B ) Rear frame (D) Upper link) Shaft) Shaft (VPP) Virtual Pivot Point 13

Claims (1)

M305166 IX. Patent application scope: 1. A bicycle frame with a reverse four-bar linkage system, comprising: a front frame, an upper tube, a front tube connected to the front end of the upper tube, and a joint a seat tube at the rear end of the upper tube, a lower tube connected to the rear end of the front tube, and a five-way tube fixed laterally to the rear end of the lower tube; and a rear portion of the front frame coupled to the front frame The frame is provided with a rear upper and a lower rear fork, a rear hook fixed to the rear and the rear lower rear end, and a connecting seat fixed to the front end of the rear lower fork; Wherein the front frame is provided with a pivoting seat at a position corresponding to the middle toothed disc above the front side of the five-way pipe; the rear upper front end spans the seat pipe from both sides of the seat pipe, and is thereafter An upper connecting rod is disposed between the front end and the front tube surface of the seat tube adjacent to the lower side of the upper tube. The upper connecting rod member is disposed toward the rear of the pivoting seat, and is disposed on the rear fork. a front end of the upper tube and a middle portion of the upper tube are connected with a shock absorber; the front end of the two side joint Extending to the lower side of the five-way pipe, and connecting a connecting rod member between the front end of the connecting seat and the pivoting seat; (in this case, when the rear frame is actuated, the upper and lower links are connected The virtual turning point of the intersection of the rods and the points is oscillated in the forward and upward arc, and the displacement of the rear wheel center is close to a straight line. The invention relates to a self-preferred frame with a reverse four-bar linkage system according to claim 1, wherein the shock absorber is located substantially at an extension axis position of the rear upper fork. </ RTI> </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> </ RTI> <RTIgt; . 4 - The self-tapping frame with a reverse four-bar linkage system according to claim 3, wherein the seat tube is fixed to the front side pipe surface adjacent to the upper pipe A link that links the rods. 5. The self-driving frame with the reverse four-bar linkage system as described in claim 4, wherein the rear upper portion and the front portion of the seat tube are located at the front position I set &amp; A support rod is fixedly connected between the front upper rear section and the front end of the rear lower fork. 6. The bicycle frame with a reverse four-bar linkage system according to any one of claims 5 to 5, wherein the upper link member is integrally connected to the two parallel side bars by a cross bar. The shape of the 杆-shaped rod frame formed in the middle section. 7. The bicycle frame with a reverse four-bar linkage system according to claim 6, wherein the lower link member is integrally connected by a horizontal shaft tube _ at the lower end of the second curved side rod Formed U-shaped rod frame type. 8. The bicycle frame with a reverse four-bar linkage system according to claim 7, wherein the connecting seat is provided at the front end with a pair of pivoting ears extending below the rear side of the five-way pipe. The transverse tube system is embedded between the two pivot ears. X. 囷··· 如 如 页 15