Bicycle frame with adjustable suspension function

Abstract

The present invention provides a bicycle frame with an adjustable shock-absorbing function, and the bicycle frame includes a first support rod, a second support rod, and a shock-absorbing body. The first support rod has a first pressing portion; the second support rod has a second pressing portion opposite to the first pressing portion; the shock-absorbing body is fixed between the first support rod and the second support rod and presses against the first pressing portion and the second pressing portion, so that the shock-absorbing body can be elastically deformed by the pressure of the first pressing portion and the second pressing portion; the shock-absorbing body defines a compression portion located within the projection area formed by the first pressing portion and the second pressing portion, and when the shock-absorbing body rotates around an axial direction, the volume of the compression portion is different before and after the shock-absorbing body rotates. Thereby, the bicycle frame of the present invention provides a shock-absorbing body with a simple structure, and the elastic coefficient of the shock-absorbing body can be easily adjusted by rotating the shock-absorbing body.

Description

Technical Field

[0001] The invention relates to a bicycle frame, in particular to a bicycle frame with an adjustable shock-absorbing function, which has a simple structure and can easily adjust the elastic coefficient of the shock-absorbing structure. Background Art

[0002] When a rider rides a bicycle through a bumpy road, he or she will feel obvious vibration and discomfort, so a shock absorber is generally installed on the bicycle frame to absorb the vibration. Existing shock absorbers usually use metal springs, pneumatic cylinders or hydraulic cylinders to achieve the purpose of shock absorption. The above components make the structure of the conventional shock absorber more complicated, so that the rider has difficulty in adjusting the elastic coefficient (k value).

[0003] Therefore, how to provide a shock-absorbing structure with a relatively simple structure and easily adjustable elastic coefficient is a problem that needs to be overcome urgently. Summary of the invention

[0004] In view of the above shortcomings, the main purpose of the present invention is to provide a bicycle frame with a simple structure and capable of easily adjusting the shock-absorbing strength.

[0005] In order to achieve the above main purpose, the bicycle frame of the present invention includes a first support rod, a second support rod, and a shock absorber. The first support rod has a first pressing portion; the second support rod has a second pressing portion, the second pressing portion is arranged opposite to the first pressing portion and spaced from the first pressing portion; the shock absorber is detachably fixed between the first support rod and the second support rod and presses against the first pressing portion and the second pressing portion, so that the shock absorber can be elastically deformed by the pressure of the first pressing portion and the second pressing portion; the shock absorber defines a compression portion located in the projection area formed by the first pressing portion and the second pressing portion, and when the shock absorber rotates around an axial direction, the volume of the compression portion before the rotation is different from the volume of the compression portion after the rotation.

[0006] Through the above technical features, the bicycle frame of the present invention provides a shock absorber with a simple structure. By rotating the shock absorber to change the volume of the compression part, the compression amount of the shock absorber pressed by the first pressing part and the second pressing part is changed, and the elastic coefficient of the shock absorber can be easily adjusted, thereby achieving the effect of adjusting the shock absorption strength.

[0007] Preferably, the shock-absorbing body is in a columnar shape, and has a columnar body and a columnar surface located on two sides of the columnar body, and the shock-absorbing body defines the axial direction extending along the columnar body.

[0008] Preferably, the first pressing part has a first abutting wall, a first baffle connected to one end of the first abutting wall, and a first receiving groove formed by the first abutting wall and the first baffle; the second pressing part has a second abutting wall, a second baffle connected to one end of the second abutting wall, and a second receiving groove formed by the second abutting wall and the second baffle; the column of the shock absorber is accommodated in the first receiving groove and the second receiving groove and abuts against the inner wall surfaces of the first abutting wall and the second abutting wall, and the column surface of the shock absorber is blocked by the first baffle and the second baffle. In this way, the shock absorber can be stably arranged between the first abutting part and the second abutting part, and the shock absorber is blocked by the baffle and is not easy to slip out of the first abutting part and the second abutting part.

[0009] Preferably, the inner wall surfaces of the first top abutting wall and the second top abutting wall match the column body of the shock absorber in terms of contour. Thus, the inner wall surfaces of the first top abutting wall and the second top abutting wall can provide a larger surface friction force to the column body of the shock absorber, so that the shock absorber is not easy to slip off the first pressing part and the second pressing part.

[0010] Preferably, the shock-absorbing body is cylindrical or hexagonal.

[0011] Preferably, the shock absorber further has two through holes penetrating along the axial direction of the column body, the two through holes are rotationally symmetrical relative to the axial direction, and each of the through holes has a tip and a blunt end, and the aperture of each of the through holes gradually increases from the tip to the blunt end.

[0012] Preferably, the shock-absorbing body further has a plurality of holes penetrating along the axial direction of the column body, and the plurality of holes have different sizes.

[0013] Preferably, the bicycle frame of the present invention further comprises a fixing assembly for fixing the shock-absorbing body to prevent the shock-absorbing body from rotating relative to the first pressing portion and the second pressing portion.

[0014] Preferably, the fixing assembly comprises a connecting piece passing through and fixing the shock-absorbing body, a positioning piece arranged adjacent to the connecting piece, and a protruding shaft arranged at one of the first pressing portion and the second pressing portion and passing through and fixing the positioning piece.

[0015] Preferably, the coupling member has a rod portion which is penetrated and fixed along the axial direction of the shock-absorbing body; the fixing plate has a groove which is engaged with the rod portion of the coupling member, and a positioning hole which is penetrated by the convex shaft.

[0016] The detailed structure, features, assembly or use of the bicycle frame with adjustable shock absorption function provided by the present invention will be described in the detailed description of the following embodiments. However, those skilled in the art should understand that the detailed description and the specific embodiments listed in the implementation of the present invention are only used to illustrate the present invention and are not used to limit the scope of the patent application of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The bicycle frame provided by the present invention is further described below with reference to the embodiments and drawings, wherein:

[0018] Figure 1 A schematic diagram of a bicycle using the bicycle frame of the first embodiment of the present invention;

[0019] Figure 2 is a three-dimensional diagram of a bicycle frame according to the first embodiment of the present invention;

[0020] Figure 3 for Figure 2 A partial enlarged view of

[0021] Figure 4 for Figure 3 Exploded diagram of

[0022] Figure 5 It is a front view of the bicycle frame of the first embodiment of the present invention, showing the state of the compression part before the shock-absorbing body rotates;

[0023] Figure 6 Similar Figure 5 , showing the state of the compression part after the shock absorber rotates;

[0024] Figure 7 is a three-dimensional diagram of a bicycle frame according to a second embodiment of the present invention;

[0025] Figure 8 for Figure 7 A partial enlarged view of

[0026] Fig. 9 for Figure 8 Exploded diagram of

[0027] Fig.10 It is a front view of a bicycle frame according to a second embodiment of the present invention, showing the state of the compression portion before the shock-absorbing body rotates;

[0028] Fig.11 Similar Fig.10 , showing the state of the shock absorber after rotating 60 degrees; and

[0029] Fig.12 Continue Fig.11 , showing the shock absorber after rotating another 60 degrees.

[0030] Wherein, the reference numerals are:

[0031] 1: Bicycle frame

[0032] 2: Bicycle frame

[0033] 10. Bicycle

[0034] 11: Front fork

[0035] 12: Seat tube

[0036] 13: Rear axle

[0037] 20: Frame tube set

[0038] 21: Head tube

[0039] 22: Top tube

[0040] 23: Down tube

[0041] 24: Riser

[0042] 25: Chainstay

[0043] 30: First support rod

[0044] 31: First pressing portion

[0045] 32: The first top against the wall

[0046] 33: First baffle

[0047] 34: First accommodating groove

[0048] 40: Second support rod

[0049] 41: Second pressing portion

[0050] 42: The second top against the wall

[0051] 43: Second baffle

[0052] 44: Second accommodating groove

[0053] 50: shock absorber

[0054] 51: Column

[0055] 52: Cylinder

[0056] 53:Piercing

[0057] 54: Tip

[0058] 55: Blunt end

[0059] 56: Compression

[0060] 60:Fixed components

[0061] 61:Joining parts

[0062] 62: Head

[0063] 63: Rod

[0064] 64: Positioning piece

[0065] 65: Card slot

[0066] 66:Fixing hole

[0067] 67: convex shaft

[0068] 70: first pressing portion

[0069] 71: The first top against the wall

[0070] 80: Second pressing portion

[0071] 81: Second top against the wall

[0072] 90: shock absorber

[0073] 91: Column

[0074] 92: Holes

[0075] 93: Small round hole

[0076] 94:Triangular hole

[0077] 95: Large round hole

[0078] 96: Compression

[0079] A: Axial. DETAILED DESCRIPTION

[0080] It is to be noted that, throughout the entire specification, including the embodiments described below, all directional terms are based on the directions in the drawings. Secondly, in the embodiments and drawings to be described below, the same element numbers represent the same or similar elements or their structural features.

[0081] See also Figure 1 The bicycle frame 1 provided in the first embodiment of the present invention is connected between a front fork 11, a seat tube 12, and a rear wheel axle 13 of a bicycle 10. Since the structure of the conventional bicycle 10 is well known to those with relevant technical background, it will not be described in detail.

[0082] See also Figures 2 to 4 The bicycle frame 1 provided in the first embodiment of the present invention includes a frame tube set 20 , two first support rods 30 , two second support rods 40 , a shock-absorbing body 50 , and a fixing assembly 60 .

[0083] The frame tube assembly 20 includes a head tube 21 , a top tube 22 connected to the top of the head tube 21 , a down tube 23 connected to the bottom of the head tube 21 , a seat tube 24 connecting the top tube 22 and the down tube 23 , and two chain stays 25 connected to the bottom of the seat tube 24 .

[0084] The top ends of the two first support rods 30 are both connected to the top end of the vertical pipe 24, and the bottom ends of the two first support rods 30 have a first pressing portion 31, and the first pressing portion 31 has a first top abutting wall 32, a first baffle plate 33 connected to the rear end of the first top abutting wall 32, and a first accommodating groove 34 formed by the first top abutting wall 32 and the first baffle plate 33.

[0085] The bottom ends of the two second support rods 40 are respectively connected to the two rear chain forks 25 of the bicycle 10, and the top ends of the two second support rods 40 have a second pressing portion 41, the second pressing portion 41 is opposite to the first pressing portion 31 and is spaced apart from the first pressing portion 31, and the second pressing portion 41 has a second top abutting wall 42, a second baffle plate 43 connected to the rear end of the second top abutting wall 42, and a second accommodating groove 44 formed by the second top abutting wall 42 and the second baffle plate 43.

[0086] However, in reality, Figure 2 The positions of the two first support rods 30 and the two second support rods 40 shown are not limited to the present embodiment. The two first support rods 30 and the two second support rods 40 may also be connected to the top and bottom ends of the vertical tube 24 respectively, or the two first support rods 30 are connected to the upper tube 22 and the two second support rods 40 are connected to the vertical tube 24, or the two first support rods 30 are connected to the lower tube 23 and the two second support rods 40 are connected to the vertical tube 24.

[0087] The shock absorber 50 is made of an elastic material, which may be (but not limited to) butyl rubber (IsobutyleneIsoprene Rubber, referred to as IIR), thermoplastic elastomer (Thermo Plastics Elastomer, referred to as TPE), and thermoplastic polyurethane (Thermo Polyurethane, referred to as TPU). Figure 3 and Figure 4In this embodiment, the shock absorber 50 is cylindrical, and has a columnar body 51 and a cylindrical surface 52 located on two sides of the columnar body 51, and the shock absorber 50 can define an axial direction A extending along the columnar body 51. In addition, the shock absorber 50 also has two through holes 53, and the two through holes 53 extend along the axial direction A and penetrate the two cylindrical surfaces 52, and are rotationally symmetrical relative to the axial direction A. Each through hole 53 has a tip 54 and a blunt end 55, and the aperture of each through hole 53 gradually increases from the tip 54 to the blunt end 55. The columnar body 51 of the shock absorber 50 is accommodated in the first accommodating groove 34 and the second accommodating groove 44 and abuts against the inner wall surfaces of the first abutting wall 32 and the second abutting wall 42, and the cylindrical surface 52 of the shock absorber 50 is blocked by the first baffle 33 and the second baffle 43. Since the column body 51 of the shock absorber 50 and the inner wall surfaces of the first top abutting wall 32 and the second top abutting wall 42 are consistent with each other in contour (both are arc-shaped in the present embodiment), the first top abutting wall 32 and the second top abutting wall 42 can provide the column body 51 of the shock absorber 50 with a larger surface friction force, making it difficult for the shock absorber 50 to slip off the first pressing portion 31 and the second pressing portion 41. Moreover, the column surface 52 of the shock absorber 50 is blocked by the first baffle plate 33 and the second baffle plate 43 at the same time, making it even more difficult for the shock absorber 50 to slip off the first pressing portion 31 and the second pressing portion 41.

[0088] The fixing assembly 60 has a coupling member 61, a positioning piece 64 disposed adjacent to the coupling member 61, and a convex shaft 67 disposed on the first top abutting wall 32 of the first pressing portion 31. The coupling member 61 has a head portion 62 and a rod portion 63 connected to each other, and the rod portion 63 is passed through the axial direction A of the shock absorber 50 and fixed to the shock absorber 50; the positioning piece 64 has an embedded groove 65 and a fixing hole 66, the embedded groove 65 of the positioning piece 64 and the rod portion 63 of the coupling member 61 are mutually engaged, and the fixing hole 66 of the positioning piece 64 is passed through by the convex shaft 67. In this way, the fixing assembly 60 can fix the shock absorber 50 between the first pressing portion 31 and the second pressing portion 41 to prevent the shock absorber 50 from rotating relative to the first pressing portion 31 and the second pressing portion 41.

[0089] The above are the structural features of the bicycle frame 1 provided in the first embodiment of the present invention. The following will further introduce the usage of the bicycle frame 1 and the effects produced.

[0090] See also Figure 5In actual use, the shock absorber 50 can define a compression portion 56 located in the projection area formed by the first pressing portion 31 and the second pressing portion 41 (the compression portion 56 is the area defined by the two dotted lines). At this time, the blunt ends 55 of the two through holes 53 of the shock absorber 50 are respectively facing the first pressing portion 31 and the second pressing portion 41, so that the volume of the compression portion 56 of the shock absorber 50 is smaller. In this case, the shock absorber 50 is more easily elastically deformed by the pressure of the first pressing portion 31 and the second pressing portion 41, resulting in a larger compression amount and a smaller elastic coefficient (k value) of the shock absorber 50. If the rider wants to adjust the elastic coefficient of the shock absorber 50, the positioning plate 64 needs to be removed and the positioning plate 64 needs to be adjusted. Figure 5 The shock absorbing body 50 shown is axially A (eg Figure 4 As shown) turn to Figure 6 In the state shown, the tips 54 of the two through holes 53 of the shock absorber 50 are respectively facing the first pressing portion 31 and the second pressing portion 41, so that the volume of the compression portion 56 of the shock absorber 50 is larger. In this case, the shock absorber 50 is less likely to be elastically deformed by the pressure of the first pressing portion 31 and the second pressing portion 41, resulting in a smaller compression amount of the shock absorber 50 and a larger elastic coefficient (k value).

[0091] As can be seen from the above, the volume of the compression portion 56 is different before and after the shock absorber 50 is rotated, resulting in different compression amounts of the shock absorber 50 and thus affecting the elastic coefficient of the shock absorber 50. In other words, the rider can adjust the elastic coefficient of the shock absorber 50 by rotating the shock absorber 50. In addition, it should be supplemented that, since the shock absorber 50 is cylindrical, the shock absorber 50 can be rotated to any angle along its axial direction A, and the apertures of the through holes 53 of the shock absorber 50 gradually increase from the tip 54 to the blunt end 55, so the elastic coefficient of the shock absorber 50 can be adjusted more finely according to the rider's needs.

[0092] However, the present invention is not limited to this embodiment. Figure 7 The structure of the bicycle frame 2 provided in the second embodiment of the present invention is substantially the same as that in the first embodiment, and the main difference lies in the structures of the first pressing portion 70, the second pressing portion 80, and the shock-absorbing body 90. Figure 8 and Fig. 9 As shown, the first pressing portion 70 has a first top abutting wall 71, the second pressing portion 80 has a second top abutting wall 81, the shock absorber 90 is in the shape of a regular hexagonal column, and the column body 91 of the shock absorber 90 and the inner wall surfaces of the first top abutting wall 71 and the second top abutting wall 81 are mutually matched in contour (both are polygonal in this embodiment). Since the manner in which the shock absorber 90 is installed and fixed between the first pressing portion 70 and the second pressing portion 80 is exactly the same as that in the above-mentioned embodiment 1, it will not be repeated here.

[0093] In addition, the shock absorber 90 further has a plurality of holes 92 penetrating along the axial direction A of the column body 91 , and the plurality of holes 92 have different sizes. In the present embodiment, the plurality of holes 92 include two small circular holes 93 , two regular triangle holes 94 , and two large circular holes 95 .

[0094] In actual use, Fig.10 As shown, the shock absorber 90 can define a compression portion 96 located in the projection area formed by the first pressing portion 70 and the second pressing portion 80 (the compression portion 96 is the area defined by the two dotted lines). At this time, the two small circular holes 93 of the shock absorber 90 are relatively close to the first pressing portion 70 and the second pressing portion 80. In this case, the shock absorber 90 is pressed by the first pressing portion 70 and the second pressing portion 80, so that the shock absorber 90 has an elastic coefficient (k value). If you want to adjust the elastic coefficient of the shock absorber 90, you need to adjust the following: Fig.10 The shock-absorbing body 90 shown is axially A (eg Fig. 9 As shown) rotate 60 degrees to Fig.11 In the state shown in FIG. 1 , the two equilateral triangular holes 94 of the shock absorber 90 are relatively close to the first pressing portion 70 and the second pressing portion 80. In this case, the volume of the compression portion 96 of the shock absorber 90 is larger than that of FIG. 1 . Fig.10 The volume of the compression portion 96 of the shock absorber 90 is shown, so the shock absorber 90 is less likely to be pressed by the first pressing portion 70 and the second pressing portion 80, resulting in the elastic coefficient of the shock absorber 90 being, for example, Fig.10 The elastic coefficient (k value) of the shock-absorbing body 90 shown in FIG. Fig.11 The shock-absorbing body 90 shown is axially A (eg Fig. 9 As shown) rotate 60 degrees to Fig.12 In the state shown in FIG. 1 , the two large circular holes 95 of the shock absorber 90 are relatively close to the first pressing portion 70 and the second pressing portion 80. In this case, the volume of the compression portion 96 of the shock absorber 90 is smaller than that of FIG. 1 . Fig.10 The volume of the compression portion 96 of the shock absorber 90 is shown, so the shock absorber 90 is more easily pressed by the first pressing portion 70 and the second pressing portion 80, resulting in the elastic coefficient of the shock absorber 90 being, for example, Fig.10 The spring constant (k value) of the shock absorbing body 90 shown is still large.

[0095] It should be added here that since the shock absorber 90 is in the shape of a regular hexagonal column, the shock absorber 90 can be rotated to three predetermined angles to adjust the elastic coefficient, and the multiple holes 92 of the shock absorber 90 have different sizes, so the elastic coefficient (k value) of the shock absorber 90 can be adjusted according to the needs of the rider.

[0096] In summary, the bicycle frames 1, 2 of the present invention provide shock absorbers 50, 90 with simple structures. By rotating the shock absorbers 50, 90 to change the volume of the compression parts 56, 96, the compression amount of the shock absorbers 50, 90 when pressed is changed, and the elastic coefficient of the shock absorbers 50, 90 can be easily adjusted, thereby achieving the effect of adjusting the shock absorption strength.

[0097] The above description is merely the content described in the above embodiments of the present application, and it cannot be used to limit the patent protection scope of the present application. Any simple changes or equivalent implementations made according to the claims and the contents of the patent specification of the present application should be covered by the patent scope of the present application.

Claims

1. A bicycle frame with adjustable shock-absorbing function, comprising: A first support rod having a first pressing portion; a second support rod having a second pressing portion, the second pressing portion being opposite to the first pressing portion and spaced apart from the first pressing portion; and a shock absorbing body, detachably fixed between the first supporting rod and the second supporting rod and pressing against the first pressing part and the second pressing part, so that the shock absorbing body can be elastically deformed by the pressing of the first pressing part and the second pressing part; Features: The shock absorber defines a compression portion located within a projection area formed by the first pressing portion and the second pressing portion. When the shock absorber rotates around an axial direction, the volume of the compression portion before the rotation is different from the volume of the compression portion after the rotation.

2. The bicycle frame with adjustable shock absorption function as claimed in claim 1, characterized in that: The shock-absorbing body is in a column shape and has a column body and a column surface located at two sides of the column body. The shock-absorbing body defines the axial direction extending along the column body.

3. The bicycle frame with adjustable shock absorption function as claimed in claim 2, characterized in that: The first pressing portion has a first top abutting wall, a first baffle plate connected to one end of the first top abutting wall, and a first receiving groove formed by the first top abutting wall and the first baffle plate; the second pressing portion has a second top abutting wall, a second baffle plate connected to one end of the second top abutting wall, and a second receiving groove formed by the second top abutting wall and the second baffle plate; the column body of the shock-absorbing body is accommodated in the first receiving groove and the second receiving groove and presses against the first top abutting wall and the second top abutting wall, and one of the column surfaces of the shock-absorbing body is blocked by the first baffle plate and the second baffle plate.

4. The bicycle frame with adjustable shock absorption function as claimed in claim 3, characterized in that: The inner wall surfaces of the first abutting wall and the second abutting wall are consistent with the column body of the shock-absorbing body in contour.

5. The bicycle frame with adjustable shock absorption function as claimed in claim 4, characterized in that: The shock-absorbing body is in a cylindrical or hexagonal column shape.

6. The bicycle frame with adjustable shock absorption function as claimed in claim 5, characterized in that: The shock absorber also has two through holes penetrating along the axial direction of the column body, the two through holes are rotationally symmetrical relative to the axial direction, and each of the through holes has a tip and a blunt end, and the aperture of each of the through holes gradually increases from the tip to the blunt end.

7. The bicycle frame with adjustable shock absorption function as claimed in claim 5, characterized in that: The shock-absorbing body also has a plurality of holes penetrating along the axial direction of the column body, and the plurality of holes have different sizes.

8. The bicycle frame with adjustable shock absorption function according to any one of claims 1 to 7, characterized in that: The invention further comprises a fixing assembly for fixing the shock absorbing body to prevent the shock absorbing body from rotating relative to the first pressing part and the second pressing part.

9. The bicycle frame with adjustable shock absorption function as claimed in claim 8, characterized in that: The fixing assembly comprises a connecting piece passing through and fixing the shock-absorbing body, a positioning piece arranged adjacent to the connecting piece, and a convex shaft arranged at one of the first pressing part and the second pressing part and passing through and fixing the positioning piece.

10. The bicycle frame with adjustable shock absorption function as claimed in claim 9, characterized in that: The coupling member has a rod portion which is fixedly penetrated along the axial direction of the shock absorber; the positioning sheet has an embedding groove which is embedded with the rod portion of the coupling member, and a fixing hole which is penetrated by the convex shaft.

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