Pipe fixing device and bicycle

Abstract

The present invention provides a pipe fixing device for a bicycle, which includes a first pipe, a second pipe, a clamping member, a first driving member and a latching member. The first pipe has a first limiting portion and a first buckling portion. The second pipe has a second limiting portion and a second buckling portion. The clamping member is used to clamp or separate from the first buckling portion and the second buckling portion. The first driving member is rotatably arranged on the first pipe. When the first driving member is located at the first position, the clamping member is driven to separate the first buckling portion and the second buckling portion, and when the first driving member is located at the second position, the clamping member is pulled to clamp the first buckling portion and the second buckling portion. The latching member is movably arranged on the first driving member, and is used to penetrate the first limiting portion and the second limiting portion.

Description

Technical Field

[0001] The invention relates to the field of bicycles, in particular to a pipe fixing device capable of providing multiple clamping functions and a bicycle. Background Art

[0002] A foldable bicycle has a tube fixing device installed on one of the tubes of the foldable frame, and the appearance and volume of the foldable bicycle can be changed by folding or unfolding the tube. A conventional tube fixing device has a snap-fitting piece on the tube; when the upper section and the lower section of the tube are combined, the snap-fitting piece buckles the upper section and the lower section to prevent the two sections from separating, so that the foldable frame remains in the unfolded state. If the snap-fitting piece is separated from the upper section and the lower section, the upper section can rotate relative to the lower section to adjust the foldable frame to the folded state. However, the conventional tube fixing device only uses a single snap-fitting piece to limit the switching of the foldable frame between the unfolded state and the folded state. The limiting mechanism of the single snap-fitting piece may cause mechanical fatigue due to long-term use, or may be temporarily loosened due to a strong collision, which will seriously affect the safety of the foldable bicycle.

[0003] Therefore, how to design a pipe fixture with high stability has become a key development goal for the design industry of relevant institutions. Summary of the invention

[0004] The present invention provides a pipe fixing device and a bicycle which can provide multiple clamping functions to solve the above problems.

[0005] Based on the above purpose, the present invention provides a pipe fixing device for a bicycle, which comprises:

[0006] A first pipe member having a first limiting portion and a first buckling portion;

[0007] A second pipe member is rotatably connected to the first pipe member, and the second pipe member has a second limiting portion and a second buckling portion;

[0008] A clamping member, movably disposed on the first tube, and used to clamp or separate the first buckling portion and the second buckling portion;

[0009] a first driving member rotatably disposed on at least one of the first tube and the second tube, the first driving member being rotatable between a first position and a second position, the first driving member driving the engaging member to separate the first engaging portion and the second engaging portion when the first driving member is at the first position, and pulling the engaging member to engage the first engaging portion and the second engaging portion to limit the rotation between the first tube and the second tube when the first driving member is at the second position; and

[0010] A latching member is movably disposed on the first driving member, and is used to penetrate the first limiting portion and the second limiting portion to limit the rotation between the first pipe member and the second pipe member.

[0011] Preferably, the first driving member includes a through hole, and the inner wall of the through hole has a protrusion, and the latch member includes a body and a first slide groove, and the body is inserted into the through hole so that the first slide groove can be slidably sleeved on the protrusion.

[0012] Preferably, the latch further comprises a second slide groove, the second slide groove is connected to the first slide groove in a relatively bent manner, and the body rotates relative to the through hole so that the protrusion enters the second slide groove.

[0013] Preferably, it further comprises: a second driving member, which is arranged on the latch member, and the second driving member approaches or moves away from the first driving member when the protrusion slides along the first sliding groove, and rotates relative to the first driving member when the protrusion slides along the second sliding groove.

[0014] Preferably, the device further comprises: a bridging member connected to the engaging member and the first driving member, wherein the bridging member drives the engaging member to approach or move away from the first buckling portion and the second buckling portion as the first driving member rotates.

[0015] Preferably, the device further comprises: an elastic element disposed between the engaging member and the first tube, the elastic element providing an elastic restoring force to drive the engaging member to engage with the first buckling portion and the second buckling portion.

[0016] Preferably, the second buckling portion has an inclined guide structure, and the inclined guide structure pushes the engaging member away from the first buckling portion and the second buckling portion.

[0017] Based on the above object, the present invention also provides a bicycle, which comprises:

[0018] A foldable bicycle frame comprises a plurality of bicycle tubes connected to each other, one of the plurality of bicycle tubes having a tube fixing device, the tube fixing device comprising:

[0019] A first pipe member, which belongs to the front section of one of the vehicle pipes, and has a first limiting portion and a first buckling portion;

[0020] A second pipe member, which belongs to the rear section of one of the vehicle tubes and is foldably connected to the front section. The second pipe member is rotatably connected to the first pipe member, and has a second limiting portion and a second buckling portion;

[0021] A clamping member, movably disposed on the first tube, for clamping or separating the first buckling portion and the second buckling portion;

[0022] a first driving member rotatably disposed on at least one of the first tube and the second tube, the first driving member being rotatable between a first position and a second position, the first driving member driving the engaging member to separate the first engaging portion and the second engaging portion when the first driving member is at the first position, and pulling the engaging member to engage the first engaging portion and the second engaging portion to limit the rotation between the first tube and the second tube when the first driving member is at the second position; and

[0023] A latching member is movably disposed on the first driving member, and is used to penetrate the first limiting portion and the second limiting portion to limit the rotation between the first pipe member and the second pipe member.

[0024] Preferably, the first driving member includes a through hole, and the inner wall of the through hole has a protrusion, and the latch member includes a body and a first slide groove, and the body is inserted into the through hole so that the first slide groove can be slidably sleeved on the protrusion.

[0025] Preferably, the latch further comprises a second slide groove, the second slide groove is connected to the first slide groove in a relatively bent manner, and the body rotates relative to the through hole so that the protrusion enters the second slide groove.

[0026] Preferably, the pipe fixing device also includes a second driving member, which is disposed on the latch member, and the second driving member approaches or moves away from the first driving member when the protrusion slides along the first slide groove, and rotates relative to the first driving member when the protrusion slides along the second slide groove.

[0027] Preferably, the pipe fixing device further comprises a bridging member, wherein the bridging member is connected to the engaging member and the first driving member, and the bridging member drives the engaging member to approach or move away from the first buckling portion and the second buckling portion as the first driving member rotates.

[0028] Preferably, the pipe fixing device further comprises an elastic element, which is disposed between the engaging member and the first pipe, and provides an elastic restoring force to drive the engaging member to engage with the first buckling portion and the second buckling portion.

[0029] Preferably, the second buckling portion has an inclined guide structure, and the inclined guide structure pushes the engaging member away from the first buckling portion and the second buckling portion.

[0030] The pipe fixing device of the present invention provides multiple clamping mechanisms, using a snap-fit ​​member and a latch member to respectively limit the rotation between the first pipe and the second pipe. Compared with the prior art, the conventional folding frame only uses a single clamping mechanism, which is prone to danger if the mechanism is damaged or the reliability is reduced. The bicycle of the present invention uses a pipe fixing device with multiple clamping mechanisms to limit the state conversion of the folding frame, which can greatly improve the structural stability of the bicycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The figure is a schematic diagram of the appearance of a foldable bicycle according to an embodiment of the present invention.

[0032] Figures 2 to 6 Schematic diagram of the pipe fixing device according to an embodiment of the present invention at different operation stages.

[0033] Figure 7 and Figure 8 It is a partial structural schematic diagram of a pipe fixing device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0034] In order to provide a further understanding of the purpose, structure, features, and functions of the present invention, the following detailed description is given in conjunction with the embodiments.

[0035] See also Figure 1 , Figure 1 1 is a schematic diagram of the appearance of a foldable bicycle 10 according to an embodiment of the present invention. The foldable bicycle 10 may include a foldable frame 12, a handlebar 14, a front wheel 16, a rear wheel 18, a transmission gear 20, a pedal 22, a seat 24, and a pipe fixing device 26. The front wheel 16 and the rear wheel 18 may be respectively disposed on the front and rear fork brackets of the foldable frame 12. The transmission gear 20 may be connected to the pedal 22 and disposed in the middle section of the foldable frame 12. The handlebar 14 may be disposed at a position of the foldable frame 12 corresponding to the front wheel 16. The seat 24 is disposed at a position of the foldable frame 12 corresponding to the transmission gear 20 and the pedal 22.

[0036] The foldable bicycle frame 12 includes a plurality of bicycle tubes that can be connected to each other, such as a head tube 28, a middle tube 30, and a seat tube 32. The middle tube 30 can be the main tube of the foldable bicycle frame 12, the head tube 28 can be located at the front end of the middle tube 30 to connect the handlebars 14, and the seat tube 32 is located at the rear end of the middle tube 30 to connect the seat 24. If the volume of the foldable bicycle 10 is to be reduced, the seat 24 can generally slide up and down relative to the seat tube 32 to shorten its height, and the head tube 28 and the middle tube 30 can have a folding mechanism; therefore, the tube fixing device 26 can preferably be set on the head tube 28 and the middle tube 30. The present invention sets the tube fixing device 26 on the head tube 28, but the actual application is not limited thereto.

[0037] See also Figures 2 to 8 ,in Figures 2 to 6 Schematic diagram of the pipe fixing device 26 in different operation stages according to an embodiment of the present invention. Figure 7 and Figure 8Schematic diagram of a part of the structure of the pipe fixing device 26 according to an embodiment of the present invention. The pipe fixing device 26 may include a first pipe 34, a second pipe 36, a locking member 38, a first driving member 40, a second driving member 42, a latch member 44, a bridge member 46 and an elastic element 48. Taking the pipe fixing device 26 disposed on the head pipe 28 as an example, the first pipe 34 may be the front section (or upper section) of the head pipe 28, and the second pipe 36 may be the rear section (or lower section) of the head pipe 28. The second pipe 36 may be rotatably connected to the first pipe 34. The first pipe 34 may have a first limiting portion 50 and a first buckling portion 52, and the second pipe 36 may have a second limiting portion 54 and a second buckling portion 56.

[0038] The engaging member 38 is movably disposed on the first tube member 34 to engage with or separate from the first engaging portion 52 and the second engaging portion 56. Figures 2 to 4 As shown, the engaging member 38 engages the first engaging portion 52 and the second engaging portion 56; the engaging member 38 can be separated from at least one of the first engaging portion 52 and the second engaging portion 56, as shown in FIG. Figure 5 and Figure 6 As shown in FIG. 1 , the engaging member 38 can be separated from the second engaging portion 56, or the engaging member 38 can be separated from both the first engaging portion 52 and the second engaging portion 56. The elastic element 48 can be disposed between the engaging member 38 and the first tube 34. The elastic restoring force generated by the elastic element 48 can drive the engaging member 38 to move relative to the first tube 34. The second engaging portion 56 can have an inclined guide structure 58. When the tube fixing device 26 is moved from Figure 6 The operation phase shown translates to Figure 5 In the operation stage shown, the inclined guide structure 58 can push the engaging member 38 slightly away from the first engaging portion 52 and the second engaging portion 56 to avoid structural interference; the pipe fixing device 26 enters Figure 5 After the operation stage shown, the elastic restoring force of the elastic element 48 can drive the engaging member 38 to return to its original position to engage the first engaging portion 52 and the second engaging portion 56 .

[0039] The first driving member 40 is rotatably disposed on the first tube member 34 or the second tube member 36, and is connected to the engaging member 38 through the bridge member 46. The latch member 44 is movably disposed on the first driving member 40 in a slidable and rotatable manner. The second driving member 42 is disposed on the latch member 44. Figure 6 The first position shown is Figure 2When the first driving member 40 rotates, the bridging member 46 drives the engaging member 38 to approach or move away from the first locking portion 52 and the second locking portion 56. In this embodiment, the bridging member 46 is designed as a cam of a specific shape, but the actual application is not limited to this. The latch member 44 can pass through the first limiting portion 50 and the second limiting portion 54, and slide and rotate relative to the first driving member 40. The second driving member 42 can be used as a force application point to facilitate the user to control the sliding and rotation of the latch member 44 relative to the first driving member 40.

[0040] like Figure 7 As shown, the first driving member 40 may include a through hole 60, and a protrusion 62 may be provided on the inner wall of the through hole 60. The latch member 44 may further include a main body 64, a first slide groove 66 and a second slide groove 68. The second slide groove 68 is connected to the first slide groove 66 in a relatively bent manner. For example, the groove direction of the first slide groove 66 may be substantially perpendicular to the groove direction of the second slide groove 68, but the actual application is not limited to this. When the main body 64 of the latch member 44 is inserted into the through hole 60, the protrusion 62 of the first driving member 40 may be slidably located in the first slide groove 66 or the second slide groove 68 (or the first slide groove 66 or the second slide groove 68 is sleeved on the protrusion 62). For example, when the latch member 44 moves relative to the first driving member 40 along the first direction D1, the protrusion 62 slides in the first slide groove 66, as shown in FIG. Figure 3 and Figure 4 As shown, the second driving member 42 approaches and moves away from the first driving member 40 when the protrusion 62 slides in the first slide groove 66; when the latch member 44 rotates relative to the first driving member 40 along the second direction D2, the protrusion 62 can enter the second slide groove 68 from the first slide groove 66 to slide toward the third direction D3, as shown in FIG. Figure 2 and Figure 3 As shown, the second driving member 42 rotates relative to the first driving member 40. Preferably, Figure 2 The second driving member 42 is merged with the second pipe member 36 to present a locked state. Figure 3 The operating end of the second driving member 42 is separated from the second tube 36, and is in an operable state. The bicycle 10 of the present invention sets the tube fixing device 26 on at least one of the head tube 28 and the middle tube 30, so that the tube can be folded to reduce the overall volume of the bicycle 10. The tube fixing device 26 of the present invention provides multiple clamping effects to ensure that the foldable frame 12 can maintain its state stably when unfolded, avoiding danger to the user when riding the bicycle. The first clamping effect of the tube fixing device 26 is provided by the mechanism of the engaging member 38 engaging with the first buckling portion 52 and the second buckling portion 56, and the second clamping effect is performed by the mechanism of the latch member 44 inserted into the first limiting portion 50 and the second limiting portion 54.

[0041] like Figure 2As shown, the foldable frame 12 is in the unfolded state, the engaging member 38 engages the first engaging portion 52 and the second engaging portion 56, and the latch member 44 is inserted into the first limiting portion 50 and the second limiting portion 54. Figure 3 As shown, first, the second driving member 42 is pulled to rotate along the second direction D2, and at this time, the protrusion 62 in the through hole 60 of the first driving member 40 will slide along the third direction D3 in the second slide groove 68. When the protrusion 62 is located at the junction of the first slide groove 66 and the second slide groove 68 of the latch member 44, as shown in FIG. Figure 4 As shown, the second driving member 42 can be pulled upward to move the latch member 44 relative to the first driving member 40 . At this time, the protrusion 62 of the first driving member 40 slides in the first sliding groove 66 along the first direction D1 .

[0042] In other embodiments, the first slide groove 66 and the second slide groove 68 included in the latch 44 may also extend in a spiral direction along the outer wall of the latch 44. In another embodiment, the first slide groove 66 and the second slide groove 68 may also extend in a spiral direction along the outer wall of the latch 44 continuously.

[0043] In other embodiments, the latch member 44 includes a protrusion, and the inner wall of the through hole 60 of the first driving member 40 is provided with a first slide groove and a second slide groove. When the main body 64 of the latch member 44 is inserted into the through hole 60, the protrusion of the latch member 44 can be slidably located in the first slide groove 66 or the second slide groove 68. Refer to the embodiment in which the latch member includes the first slide groove and the second slide groove, and the protrusion is provided on the inner wall of the through hole of the first driving member, which will not be repeated here.

[0044] Next, still with Figures 2 to 8 For example, Figure 5 As shown in FIG. 1 , the second driving member 42 is pulled to flip the first driving member 40 relative to the first tube member 34 and / or the second tube member 36; as the first driving member 40 rotates, the engaging member 38 will slightly move away from and separate from the first engaging portion 52 and the second engaging portion 56 due to the action of the bridge member 46. Since the engaging member 38 no longer engages the first engaging portion 52 and the second engaging portion 56, as shown in FIG. Figure 6 As shown, force can be applied to the second tube 36 to flip the second tube 36 relative to the first tube 34; during the flipping process of the second tube 36, the inclined guide structure 58 of the second buckling portion 56 can push the engaging member 38 further away from the first buckling portion 52 and the second buckling portion 56, and at this time, the elastic element 48 stores elastic restoring force due to deformation. When the second buckling portion 56 separates the engaging member 38, the elastic restoring force of the elastic element 48 can drive the engaging member 38 to slightly reset, thereby achieving the purpose of folding the bicycle tube (such as the head tube 28 or the middle tube 30). By performing these steps in sequence in a manner opposite to the above description, the foldable bicycle frame 12 can be switched from the folded state to the unfolded state.

[0045] In summary, the pipe fixing device of the present invention provides multiple clamping mechanisms, using the engaging member and the latching member to respectively limit the rotation between the first pipe and the second pipe. Compared with the prior art, the conventional folding frame only uses a single clamping mechanism, which is prone to danger if the mechanism is damaged or the reliability is reduced. The bicycle of the present invention uses a pipe fixing device with multiple clamping mechanisms to limit the state conversion of the folding frame, which can greatly improve the structural stability of the bicycle.

[0046] The present invention has been described by the above-mentioned relevant embodiments, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, changes and modifications made without departing from the spirit and scope of the present invention are all within the scope of patent protection of the present invention.

Claims

1. A pipe fixing device for a bicycle, characterized in that: Contains: The first pipe has a first limiting portion and a first buckling portion, and the first limiting portion and the first buckling portion are relatively independent; A second pipe member is rotatably connected to the first pipe member, and the second pipe member has a second limiting portion and a second buckling portion, and the second limiting portion and the second buckling portion are relatively independent; A clamping member, movably disposed on the first tube, and used to clamp or separate the first buckling portion and the second buckling portion; A first driving member is rotatably disposed on at least one of the first tube member and the second tube member, and the first driving member can rotate between a first position and a second position. When the first driving member is located at the first position, the first driving member drives the engaging member to separate the first engaging portion and the second engaging portion, and when the first driving member is located at the second position, the engaging member is pulled to engage the first engaging portion and the second engaging portion to limit the rotation between the first tube member and the second tube member; as well as A latching member is movably disposed on the first driving member, and is used to penetrate the first limiting portion and the second limiting portion to limit the rotation between the first pipe member and the second pipe member.

2. The pipe fixing device according to claim 1, characterized in that: The first driving member includes a through hole, and the inner wall of the through hole has a protrusion. The latch member includes a body and a first slide groove. The body is inserted into the through hole so that the first slide groove can be slidably sleeved on the protrusion.

3. The pipe fixing device according to claim 2, characterized in that: The latch also includes a second slide groove, which is connected to the first slide groove in a relatively bent manner. The body rotates relative to the through hole to allow the protrusion to enter the second slide groove.

4. The pipe fixing device according to claim 3, characterized in that: Also included: The second driving member is arranged on the latch member. When the protrusion slides along the first slide slot, the second driving member approaches or moves away from the first driving member, and rotates relative to the first driving member when the protrusion slides along the second slide slot.

5. The pipe fixing device according to claim 1, characterized in that: Also included: The bridge member is connected to the engaging member and the first driving member. The bridge member drives the engaging member to approach or move away from the first buckling portion and the second buckling portion as the first driving member rotates.

6. The pipe fixing device according to claim 1, characterized in that: Also included: The elastic element is disposed between the engaging member and the first tube, and provides elastic restoring force to drive the engaging member to engage with the first buckling portion and the second buckling portion.

7. The pipe fixing device according to claim 1, characterized in that: The second buckling portion has an inclined guide structure, and the inclined guide structure pushes the engaging component away from the first buckling portion and the second buckling portion.

8. A bicycle, characterized in that: Contains: A foldable bicycle frame comprises a plurality of bicycle tubes connected to each other, one of the plurality of bicycle tubes having a tube fixing device, the tube fixing device comprising: A first pipe member, which belongs to the front section of one of the vehicle pipes, and has a first limiting portion and a first buckling portion, and the first limiting portion and the first buckling portion are relatively independent; A second pipe member, which belongs to the rear section of one of the vehicle tubes and is connected to the front section in a foldable manner, and the second pipe member is rotatably connected to the first pipe member, and the second pipe member has a second limiting portion and a second buckling portion, and the second limiting portion and the second buckling portion are relatively independent; A clamping member, movably disposed on the first tube, for clamping or separating the first buckling portion and the second buckling portion; A first driving member is rotatably disposed on at least one of the first tube member and the second tube member, and the first driving member can rotate between a first position and a second position. When the first driving member is located at the first position, the first driving member drives the engaging member to separate the first engaging portion and the second engaging portion, and when the first driving member is located at the second position, the engaging member is pulled to engage the first engaging portion and the second engaging portion to limit the rotation between the first tube member and the second tube member; as well as A latching member is movably disposed on the first driving member, and is used to penetrate the first limiting portion and the second limiting portion to limit the rotation between the first pipe member and the second pipe member.

9. The bicycle according to claim 8, characterized in that The first driving member includes a through hole, and the inner wall of the through hole has a protrusion. The latch member includes a body and a first slide groove. The body is inserted into the through hole so that the first slide groove can be slidably sleeved on the protrusion.

10. The bicycle according to claim 9, characterized in that The latch also includes a second slide groove, which is connected to the first slide groove in a relatively bent manner. The body rotates relative to the through hole to allow the protrusion to enter the second slide groove.

11. The bicycle according to claim 10, characterized in that The pipe fixing device also includes a second driving member, which is arranged on the latch member. The second driving member approaches or moves away from the first driving member when the protrusion slides along the first sliding groove, and rotates relative to the first driving member when the protrusion slides along the second sliding groove.

12. The bicycle according to claim 8, wherein: The pipe fixing device further comprises a bridge member, which is connected to the engaging member and the first driving member. The bridge member drives the engaging member to approach or move away from the first buckling portion and the second buckling portion as the first driving member rotates.

13. The bicycle according to claim 8, wherein: The pipe fixing device further comprises an elastic element, which is arranged between the engaging member and the first pipe. The elastic element provides elastic restoring force to drive the engaging member to engage with the first buckling portion and the second buckling portion.

14. The bicycle according to claim 8, wherein: The second buckling portion has an inclined guide structure, and the inclined guide structure pushes the engaging component away from the first buckling portion and the second buckling portion.

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