TWM526977U - Improved shockproof structure of bicycle front fork - Google Patents

Description

Bicycle front fork suspension structure improvement

This creation department is concerned with a front fork suspension structure, especially a bicycle front fork suspension structure.

A combination structure of a bicycle front fork shock absorber, as shown in the figures 6, 7, and 8, includes: a front fork tube 60, a front end tube 70, a fixed ring 80, and a lock 90 The front fork tube 60 is provided with a shaft post 61 and a spring member 62. The top end of the shaft post 61 is provided with a screw hole 63. The front end tube 70 is inserted into the shaft column from the bottom end. The top end of the 61, and the bottom end of the head pipe 70 and forming a pipe expansion portion 71, the fixing ring 80 is assembled in the bottom portion of the front pipe 70, and the bottom portion of the fixing ring 80 has a stepped portion 81 which can be matched. The expansion portion 71 of the head pipe 70 is fixed to the expansion portion 81 and the expansion portion 71 by a rivet 82, so that the fixing ring 80 and the head tube 70 are integrally coupled, and the center of the fixing ring 80 is a polygonal shape. The through hole 83 is just inserted into the shaft post 61 and abuts against the spring member 62 through the fixing ring 80. The locking member 90 is locked to the screw hole 63 of the shaft post 61 through a gasket 91.

In summary, when the structure is assembled, the fixing ring 80 is first fixed to the bottom section of the front end pipe 70 by the rivet 82, and the spring member 62 is sleeved into the shaft post 61 to form the bottom end of the spring member 62. Depending on the end of the front fork tube 60, the bottom end of the front end tube 70 can be inserted into the shaft post 61 downwardly. When the sleeve is inserted, the shaft post 61 will be inserted upward through the through hole 83 of the fixing ring 80 to form a spring. The top end of the member 62 abuts against the bottom end of the fixing ring 80, and finally the spacer 91 is sequentially placed on the top surface of the fixing ring 80, and the locking member 90 is locked. The screw hole 63 of the shaft 61 thus completes the assembly action of the entire front fork shock absorber.

Looking at the above-mentioned conventional structure, it is not difficult to find that there are still some shortcomings. The main reasons are as follows: (1) The conventional front tube 70 and the fixed ring 80 are only fixed by the rivet 82, and the strength is slightly insufficient. It is easy to break the rivet 82 due to the shear stress generated by the swinging motion of the head pipe 70, and the rivet 82 is loosened, so that the front tube 70 and the fixed ring 80 cannot be integrally rotated, and the service life and practicality are lacking. .

(2) The spring member 62 is simply threaded over the shaft post 61. Since the diameter of the spring member 62 is necessarily larger than the outer diameter of the shaft post 61, the spring member 62 is easily yawed and impacted against the shaft post 61 when the actuator is actuated. The shaft 61 will be destroyed, and collision noise will be generated, which will reduce the smoothness of the operation and have doubts about the safety of use.

(3) The fastener 90 is only locked through a gasket 91 and locked to the screw hole 63 of the shaft post 61. Since the gasket 91 has a small area and insufficient strength, the head tube 70 is easy to apply pressure during the reciprocating lifting process. The gasket 91 causes the deformation and deformation of the gasket 91, so that the head tube 70 is displaced during the displacement process, and the yaw loses the direct acting state, which not only greatly reduces the smoothness of the operation, but also has the structural safety. .

In view of this, the creator has been engaged in the manufacturing development and design experience of related products for many years. After detailed design and careful evaluation, the author has finally achieved a practical and practical creation.

The technical problem to be solved by the present invention is to provide an improvement of the bicycle front suspension structure in view of the above-mentioned shortcomings existing in the prior art.

The bicycle front fork suspension structure is improved, comprising: a front fork tube and a fixed a ring, a limiting ring and a front tube, wherein a front end of the front fork tube has a non-cylindrical shaft, and a spring member and a fixing ring are sequentially inserted, and the upper end of the shaft has a coupling screw hole. a fixing ring has a through hole having a non-circular hole shape, and an outer threaded surface is provided on the outer ring surface, and a limiting protrusion is further disposed outside the bottom portion, and a limiting groove is further disposed on the bottom side of the limiting protrusion Abutting the limiting spring member, a limiting ring has a vertical toroidal surface formed by a thickness, and is folded over the fixing ring, and is further fixed by a screwing member through a screw hole of the fixing ring and the shaft. A front tube is fitted with a sleeve and a retaining ring, and the inner diameter is provided with an internal thread segment and a threaded portion of the fixing ring to lock and abut against the limiting collar of the fixing ring, and the front tube has a inside The outer wall of the threaded section is further provided with a locking hole, and a stop screw is externally locked into the locking hole and abuts against the fastening ring. With the above structure, the bicycle front fork suspension structure is improved.

According to the effect of the prior art: (1) The fixing ring and the front tube of the present invention are fixed by screw locking, and the outer wall of the front tube is locked into the fastening ring by a stop screw to ensure the fixing ring and the front tube. The combination of the state, greatly enhance the strength and stability of the structural combination, effectively improve the service life of the structure, more conducive to consumer use and practical.

(2) The spring member is sleeved on the limit seat of the shaft and is limited to the limit ring groove of the front fork tube, and when the fixing ring is sleeved on the shaft, the limit hole is concave through the bottom side. The groove abuts the restriction, so that not only can the spring member be effectively positioned, but also the fear that the spring member is offset to the left and right when the lifting and buffering is applied, and the spring member is prevented from being generated by the collision, and the structure is used. Smoothness.

(3) The top end of the shaft is connected to a limit ring and stacked on top of the fixed ring. Since the limit ring is formed with a thickness to form a vertical torus, the attachment area of the head tube lifting displacement is increased, and the front tube is avoided. Produces a yaw and does maintain a state of direct displacement, greatly improving the front The stability of the pipe lifting action to help the use of safety enhancers.

[this creation]

10‧‧‧Front tube

11‧‧‧ shaft

111‧‧‧Limited seat

112‧‧‧ Combined with screw holes

12‧‧‧Limited ring

121‧‧‧ Limit ring groove

13‧‧‧Spring parts

20‧‧‧Fixed ring

21‧‧‧through holes

22‧‧‧ External thread section

23‧‧‧Limited convex

231‧‧‧ Limit groove

30‧‧‧ Limit ring

31‧‧‧Vertical torus

32‧‧‧step hole

33‧‧‧ Screw locks

34‧‧‧shims

40‧‧‧ head tube

41‧‧‧Threaded section

42‧‧‧Lock hole

43‧‧‧stop screws

44‧‧‧Linking

50‧‧‧Outer casing

[study]

60‧‧‧Front tube

61‧‧‧ shaft column

62‧‧‧Spring parts

63‧‧‧ screw holes

70‧‧‧ head tube

71‧‧‧Extension Department

80‧‧‧Fixed ring

81‧‧‧Expanding Department

82‧‧‧ Rivets

83‧‧‧through holes

90‧‧‧Locker

91‧‧‧shims

Figure 1: This is a perspective view of the creation.

Figure 2: This is an exploded view of the creation.

Figure 3: A cross-sectional view of the combination of the creations.

Figure 4: A cross-sectional view of a combination of another perspective.

Figure 5: This is a schematic diagram of the actual operation of the creation.

Figure 6: A stereoscopic view of the prior art.

Figure 7: An exploded view of the prior art.

Figure 8 is a cross-sectional view of a conventional combination.

In order to enable your review committee to have a better understanding and understanding of the purpose, characteristics and efficacy of this creation, please refer to the following [simplified description of the drawings] as follows: First, please refer to Figures 1, 2 and 3 The invention discloses a bicycle front fork suspension structure, which comprises: a front fork tube 10, a fixing ring 20, a limiting ring 30 and a head tube 40, wherein a front fork tube 10 has a non-cylindrical end. The shaft 11 and the outer diameter of the upper end of the front fork tube 10 are larger than the shaft 11 and the limit ring 12 is protruded on the outer circumference, and the bottom end of the shaft 11 is further expanded to have a limit seat 111, and A limiting ring groove 121 is formed between the limiting seat 111 and the limiting ring 12, and a spring member 13 and a fixing ring 20 are sequentially inserted through the shaft 11 and the spring member 13 is sleeved on the limiting seat 111. At the same time, it is limited to the limit ring groove 121, and the upper end of the shaft 11 has a coupling screw hole 112, and the fixing ring 20 is hollow with a through hole 21 having a non-circular hole shape, and fits on the shaft of the front fork tube 10 11, and the outer ring surface is provided with a external snail a limiting portion 23 is formed on the bottom portion of the limiting portion 23, and a limiting groove 231 is further disposed on the bottom side of the limiting protrusion 23 against the limiting spring member 13. The outer circumference of the limiting ring 30 is a thickness. A vertical toroidal surface 31 is formed and is folded over the fixing ring 20, and the limiting ring 30 is provided with a stepped hole 32 from the top, and is locked by a screwing member 33 through the coupling screw hole 112 of the shaft 11. Fixing, at the same time, the screw lock 33 is embedded and hidden, and a spacer 34 is further disposed between the limiting ring 30 and the shaft 11 , and a front tube 40 is fitted through the limiting ring 30 and the fixing ring 20 , and the inner diameter thereof is set. The outer threaded section 41 is locked with the outer threaded section 22 of the retaining ring 20 and abuts against the limiting collar 23 of the retaining ring 20, and the outer wall of the front threaded section 41 has a locking hole 42. And a stop screw 43 is externally locked into the locking hole 42 and abuts against the fastening ring 20, and the bottom end of the front tube 40 is further extended with a connecting protrusion 44, and through the connecting protrusion 44 and the front fork tube An outer casing 40 is provided between the limit ring 12 of the 10, and the outer casing 50 is protected by the spring member 13 and the shaft 11.

For the structure of the structure, please refer to the figures 1, 2, 3 and 4, the front fork tube 10 is provided with a spring member 13 and a fixing ring 20 by the shaft 11, and the spring member 13 is sleeved and sealed. The seat 111 is limited to the limit ring groove 121, and the fixing ring 20 is in a state of being embedded with the shaft 111 through the through hole 21 having a non-circular shape, and is limited by the bottom side of the limiting cam 23 The recessed portion 231 abuts against the limiting spring member 13 to limit the spring member 13 . The limiting ring 30 is stacked on the fixing ring 20 and then locked by a screwing member 33 and the coupling screw hole 112 of the shaft 11 . The fixing ring 20 is fixed to the rising position of the shaft 11 , and the outer covering sleeve 50 is pre-sleevely sleeved on the shaft 11 of the front fork tube 10 , and the bottom end is fixed on the limiting ring 12 The front tube 40 is sleeved over the limiting ring 30 and the fixing ring 20, and is further locked to the outer threaded portion 22 of the fixing ring 20 through the inner threaded portion 41 of the inner wall, and the inner thread portion 41 of the front tube 40 When the external threaded portion 22 of the fixing ring 20 is locked, the adhesive is fixed and fixed by the adhesive. The locking hole 42 of the front tube 40 is locked into a fixing screw 43 to tighten the fixing ring 20, and the external thread portion 2 is broken. 2, to ensure The state in which the front tube 40 and the fixed ring 20 are coupled, and finally the connecting boss 44 of the front tube 40 is coupled to the top end of the outer sleeve 50. With the above structure, the assembly of the bicycle front suspension structure is improved. .

For the actual use of the structure, please refer to Figures 4 and 5, when the structure is used, since the front fork tube 10 is provided with wheels, when the riding path is uneven, the front tube 40 will be The reaction force of the sink is generated, and the spring member 13 is pressed through the fixing ring 20 to achieve the cushioning effect, thereby greatly reducing the vibration feeling of the hand grip and improving the comfort of the hand.

According to the structure of the above specific embodiment, the following benefits can be obtained: (1) The fixing ring 20 and the head tube 40 of the present invention are fixed and fixed by a screw lock, and the outer wall of the front tube 40 is locked by a stop screw 43. The tightening of the fixing ring 20 ensures the bonding state between the fixing ring 20 and the head tube 40, greatly improves the strength and stability of the structural combination, effectively improves the service life of the structure, and is more conducive to consumer use and practical.

(2) The spring member 13 is sleeved on the limiting seat 111 of the shaft 11 and is restrained in the limiting ring groove 121 of the front fork tube 10. When the fixing ring 20 is sleeved on the shaft 11, it is transmitted through The limiting groove 231 of the bottom side abuts against the restriction, so that the spring member 13 can be effectively positioned not only to avoid the fear that the spring member 13 is deflected to the left and right and collides with the shaft 11 during the lifting and buffering, and the spring member 13 is prevented from being damaged. Noise caused by collisions does improve the smoothness of the structure.

(3) The top end of the shaft 11 is coupled to a limiting ring 30 and stacked on the fixing ring 20. Since the limiting ring 30 is formed with a thickness to form a vertical toroid 31, the lifting and lowering of the head tube 40 is increased. The area avoids the yaw of the head tube 40 and does maintain the state of the straight displacement, and greatly improves the stability of the head tube 40 lifting and lowering to help the safety enhancer.

In summary, this creation has indeed achieved a breakthrough structural design with improved The content of the creation can at the same time achieve the utilization and progress of the industry, and the creation is not found in any publications, and it is also novel. When it meets the requirements of the relevant laws and regulations of the Patent Law, it is required to file a patent application in accordance with the law. The review committee granted legal patent rights and was praying.

Only the above-mentioned ones are only preferred embodiments of the present invention, and the scope of the implementation of the creation cannot be limited by them; that is, the equal changes and modifications made by the applicants in accordance with the scope of the patent application for this creation should still belong to the creation. Within the scope of the patent.

10‧‧‧Front tube

11‧‧‧ shaft

111‧‧‧Limited seat

112‧‧‧ Combined with screw holes

12‧‧‧Limited ring

121‧‧‧ Limit ring groove

13‧‧‧Spring parts

20‧‧‧Fixed ring

21‧‧‧through holes

22‧‧‧ External thread section

23‧‧‧Limited convex

231‧‧‧ Limit groove

30‧‧‧ Limit ring

31‧‧‧Vertical torus

32‧‧‧step hole

33‧‧‧ Screw locks

34‧‧‧shims

40‧‧‧ head tube

41‧‧‧Threaded section

42‧‧‧Lock hole

43‧‧‧stop screws

44‧‧‧Linking

50‧‧‧Outer casing

Claims (5)

The utility model relates to a bicycle front fork suspension structure, which comprises: a front fork tube having a non-cylindrical shaft at an upper end thereof, a spring member and a fixing ring are sequentially sleeved, and a coupling screw hole is arranged at an upper end of the shaft rod; a fixing ring is a hollow through hole having a non-circular hole shape, and an outer threaded surface is provided on the outer ring surface, and a limiting protrusion is further disposed outside the bottom portion, and a limiting concave is further arranged on the bottom side of the limiting convex portion The groove abuts against the limiting spring member; a limiting ring, the outer circumference is formed with a vertical toroidal surface with a thickness, and is folded over the fixing ring, and is further locked by a screw locking member through a screw hole of the fixing ring and the shaft rod Fixed; a front tube is fitted with a sleeve and a retaining ring, and the inner diameter is provided with an internal thread segment and a threaded portion of the fixing ring to lock and abut against the limiting collar of the fixing ring, and the front end The outer wall of the inner threaded section of the pipe is further provided with a locking hole, and a stop screw is externally locked into the locking hole and abuts against the fixing ring. According to the improvement of the bicycle front fork suspension structure according to claim 1, wherein the outer diameter of the upper end of the front fork tube is larger than the shaft and the limit ring is protruded on the outer circumference, and the bottom end of the shaft is expanded. The utility model has a limit seat, and a limit ring groove is formed between the limit seat and the limit ring. According to the improvement of the bicycle front fork suspension structure according to claim 1 or 2, wherein the bottom end of the front end of the tail pipe is further provided with a connecting bulge, and the connecting ring and the front fork tube are connected to each other. An outer casing is provided. The bicycle front fork suspension structure according to the first aspect of the patent application is improved, wherein the inner thread segment of the front tube and the outer thread portion of the fixed ring are bonded and fixed by an adhesive. According to the improvement of the bicycle front fork suspension structure according to the first aspect of the patent application, wherein the limit ring system is provided with a stepped hole at the top for the screw lock to be embedded and hidden, and the limit ring and the shaft are further provided with a Gasket.