TWI775630B - Tube fixing device and related bicycle - Google Patents

Abstract

A tube fixing device applied to a bicycle includes a first tube, a second tube, an engaging component, a first driving component and a latching component. The first tube includes a first constraining portion and a first buckling portion. The second tube includes a second constraining portion and a second buckling portion. The engaging component is engaged with or separated from the first buckling portion and the second buckling portion. The first driving component is rotatably disposed on the first tube. The first driving component in a first position drives the engaging component to separate from the first buckling portion and the second buckling portion, and further in a second position drives the engaging component to engage with the first buckling portion and the second buckling portion. The latching component is movably disposed on the first driving component to insert into the first constraining portion and the second constraining portion.

Description

Pipe fixing device and its bicycle

The invention provides a pipe fitting fixing device and its bicycle, especially a pipe fitting fixing device and its bicycle which can provide multiple clamping functions.

The folding bicycle system installs the tube fixing device on one of the tubes of the folding frame, and uses the folding or unfolding of the tube to change the appearance volume of the folding bicycle. The traditional tube fixing device will set the clip on the car tube; when the upper section and the lower section of the car tube are combined, the clip will fasten the upper section and the lower section to prevent the two sections from separating, allowing the folding The frame remains unfolded. If the engaging member is separated from the upper section and the lower section, the upper section can be rotated relative to the lower section to adjust the foldable frame to the folded state. However, the traditional tube fixing device only uses a single engaging element to limit the switching between the unfolded state and the folded state of the foldable frame. The limiting mechanism of the single engaging element may cause mechanical fatigue due to long-term use, or may be damaged due to strong collision. Temporary loosening will seriously affect the safety of the folding bicycle. Therefore, how to design a pipe fitting fixture with high stability is the key development goal of the design industry for related institutions.

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

The scope of the patent application of the present invention is to disclose a pipe fixing device applied to a bicycle, which includes a first pipe, a second pipe, an engaging element, a first driving element and a latching element. The first pipe has a first limiting portion and a first buckling portion. The second pipe is rotatably connected to the first pipe. The second pipe has a second limiting portion and a second buckling portion. The engaging piece is movably arranged on the first pipe piece for engaging or separating from the first buckling portion and the second buckling portion. The first driving member is rotatably disposed on at least one of the first tubular member and the second tubular member. 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 engaging member drives the engaging member to separate the first engaging portion and the second engaging portion, and pulls the engaging member to engage the first engaging member when located at the second position The engaging portion and the second engaging portion restrict the rotation between the first tubular member and the second tubular member. The latching member is movably disposed on the first driving member for passing through the first limiting portion and the second limiting portion to limit the rotation between the first pipe member and the second pipe member.

The scope of the patent application of the present invention further discloses a bicycle, which includes a foldable frame. The foldable frame includes a plurality of vehicle tubes connected with each other, and one of the plurality of vehicle tubes has a tube fixing device. The pipe fixing device includes a first pipe, a second pipe, a clamping element, a first driving element and a latching element. The first pipe piece belongs to a front section of one of the vehicle pipes, and has a first limiting portion and a first buckling portion. The second pipe part belongs to one of the vehicle tubes and is connected to a rear part of the front part in a foldable manner, and is rotatably connected to the first pipe part. The second pipe has a second limiting portion and a second buckling portion. The engaging piece is movably arranged on the first pipe piece for engaging or separating from the first buckling portion and the second buckling portion. The first driving member is rotatably disposed on at least one of the first tubular member and the second tubular member. 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 engaging member drives the engaging member to separate the first engaging portion and the second engaging portion, and pulls the engaging member to engage the first engaging member when located at the second position The engaging portion and the second engaging portion restrict the rotation between the first tubular member and the second tubular member. The latching member is movably disposed on the first driving member for passing through the first limiting portion and the second limiting portion to limit the rotation between the first pipe member and the second pipe member.

The pipe fixing device of the present invention provides multiple clamping mechanisms, and uses the engaging element and the latching element to respectively restrict the rotation between the first pipe element and the second pipe element. Compared with the prior art, the traditional folding frame only uses a single clamping mechanism, which is prone to danger if the mechanism is damaged or its reliability is reduced. The state transition can greatly improve the structural stability of the bicycle.

Please refer to FIG. 1. FIG. 1 is a schematic diagram of the appearance of a folding bicycle 10 according to an embodiment of the present invention. The collapsible bicycle 10 may include a collapsible frame 12 , handlebars 14 , a front wheel 16 , a rear wheel 18 , a transmission gear 20 , pedals 22 , a seat 24 , and a tube fixture 26 . The front wheel 16 and the rear wheel 18 can be respectively disposed on the front and rear fork brackets of the foldable frame 12 . The transmission gear 20 can be connected to the pedals 22 and is disposed in the middle section of the foldable frame 12 . The handlebar 14 may be provided at a position of the folding frame 12 corresponding to the front wheel 16 . The seat 24 is disposed at the position of the folding frame 12 corresponding to the transmission gear 20 and the pedal 22 .

The collapsible frame 12 can be connected to a plurality of vehicle tubes, such as a head tube 28 , a center tube 30 and a seat tube 32 . The middle tube 30 can be the main pipe of the foldable frame 12 , the head tube 28 can be positioned at the front end of the middle tube 30 to connect the handlebars 14 , and the seat tube 32 can be positioned at the rear end of the middle tube 30 to connect to the seat 24 . To reduce the volume of the folding bicycle 10, 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 is preferably It can be arranged on the head pipe 28 and the middle pipe 30. In the present invention, the pipe fixing device 26 is arranged on the head pipe 28, but the practical application is not limited to this.

Please refer to Figures 2 to 8. Figures 2 to 6 are schematic views of the pipe fixing device 26 according to the embodiment of the present invention at different stages of operation, and Figures 7 and 8 are the pipe fixing device according to the embodiment of the present invention. 26 part of the schematic diagram. The tube fixing device 26 may include a first tube 34 , a second tube 36 , a snap member 38 , a first driving member 40 , a second driving member 42 , a latching 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 or upper section of the head pipe 28 , and the second pipe 36 may be the rear or lower section of the head pipe 28 . The second pipe member 36 is rotatably connected to the first pipe member 34 . The first pipe member 34 may have a first limiting portion 50 and a first locking portion 52 , and the second pipe member 36 may have a second limiting portion 54 and a second locking portion 56 .

The engaging member 38 is movably disposed on the first pipe member 34 for engaging or separating from the first engaging portion 52 and the second engaging portion 56 . As shown in FIGS. 2 to 4 , the engaging member 38 engages the first engaging portion 52 and the second engaging portion 56 ; as shown in FIGS. 5 and 6 , the engaging member 38 is separated from the The first buckling portion 52 and the second buckling portion 56 . The elastic element 48 may be disposed between the engaging member 38 and the first pipe member 34 . The elastic restoring force generated by the elastic element 48 can drive the engaging member 38 to move relative to the first pipe member 34 . The second buckling portion 56 may have an oblique guide structure 58 . When the pipe fixing device 26 is converted from the operation stage shown in FIG. 6 to the operation stage shown in FIG. 5 , the inclined guiding structure 58 can push the engaging element 38 slightly away from the first engaging portion 52 and the second engaging portion 56 to avoid structural interference; after the pipe fixing device 26 enters the operation stage shown in FIG. 5 , the elastic restoring force of the elastic element 48 can drive the engaging element 38 to reset to engage the first engaging portion 52 and the second engaging portion 56 . Buckle part 56 .

The first driving member 40 is rotatably disposed on the first tubular member 34 or the second tubular member 36 , and is connected to the engaging member 38 through a bridge member 46 . The latch member 44 is movably arranged on the first driving member 40 in a slidable and rotatable manner. The second driving member 42 is disposed on the latch member 44 . The first driving member 40 can rotate between the first position shown in FIG. 6 and the second position shown in FIG. 2 . When the first driving member 40 rotates, the bridging member 46 is used to drive the engaging member 38 to approach or move away from the first engaging portion 52 and the second engaging portion 56 . In this embodiment, the bridge member 46 is designed as a cam with a specific shape, but the practical 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 latching member 44 relative to the first driving member 40 .

As shown in FIG. 7 , the first driving member 40 may include a through hole 60 , and a protrusion 62 is provided on the inner wall of the through hole 60 . The latch 44 may further include a body 64 , a first sliding slot 66 and a second sliding slot 68 . The second chute 68 is connected to the first chute 66 in a relatively bending manner. For example, the slot direction of the first chute 66 may be substantially perpendicular to the slot direction of the second chute 68 , but the practical application is not limited to this. When the body 64 of the latching member 44 is inserted into the through hole 60 , the protrusion 62 of the first driving member 40 is slidably located in the first sliding groove 66 or the second sliding groove 68 . For example, when the latching member 44 moves relative to the first driving member 40 along the first direction D1, the protrusion 62 slides in the first sliding groove 66; the latching member 44 moves relative to the first driving member along the second direction D2 When the member 40 rotates, the protrusion 62 can enter the second sliding groove 68 from the first sliding groove 66 to slide toward the third direction D3.

In the bicycle 10 of the present invention, the tube fixing device 26 is disposed 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 functions to ensure that the folding frame 12 can stably maintain its state when unfolded, and avoid danger to the user while riding the bicycle. The first clamping action of the pipe fixing device 26 is provided by the mechanism in which the engaging piece 38 is engaged with the first buckling portion 52 and the second buckling portion 56 , and the second clamping action is provided by the latching piece 44 . It is performed by the mechanism provided in the first limiting portion 50 and the second limiting portion 54 .

As shown in FIG. 2 , 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 engaging portion 56 . Two limiting parts 54 . To retract the foldable frame 12 , as shown in FIG. 3 , firstly pull the second driving member 42 to rotate along the second direction D2 . At this time, the protrusion 62 in the through hole 60 of the first driving member 40 will be in The second chute 68 slides along the third direction D3. When the protrusion 62 is located at the junction of the first sliding slot 66 and the second sliding slot 68 of the latch member 44, as shown in FIG. 40 moves, and at this time, the bump 62 of the first driving member 40 slides along the first direction D1 in the first chute 66 .

Next, as shown in FIG. 5, the second driving member 42 is pulled so that the first driving member 40 is relative to the first pipe member 34 and/or the second pipe member 36 is turned over; with the rotation of the first driving member 40, at this time The engaging member 38 is slightly away from and separated from the first buckling portion 52 and the second buckling 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. 6, the second tubular member 36 can be forced to be turned over relative to the first tubular member 34; During the overturning process of the pipe member 36 , the inclined guide structure 58 of the second engaging portion 56 can push the engaging member 38 further away from the first engaging portion 52 and the second engaging portion 56 . At this time, the elastic element 48 stores elastic restoring force due to the deformation. . After 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 reset slightly, so as to achieve the purpose of folding the vehicle tube (eg the head tube 28 or the middle tube 30). If the steps are performed sequentially in a manner opposite to the previous description, the foldable frame 12 can be switched from the folded state to the unfolded state.

To sum up, the pipe fixing device of the present invention provides multiple clamping mechanisms, and uses the engaging element and the latching element to respectively restrict the rotation between the first pipe element and the second pipe element. Compared with the prior art, the traditional folding frame only uses a single clamping mechanism, which is prone to danger if the mechanism is damaged or its reliability is reduced. The state transition can greatly improve the structural stability of the bicycle. The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope of the present invention.

10: Bike 12: Folding frame 14: Handle 16: Front Wheel 18: rear wheel 20: Transmission gear 22: Pedal 24: Seats 26: Pipe fixing device 28: Head Tube 30: Middle tube 32: Riser 34: The first pipe fitting 36: Second pipe fitting 38: Snaps 40: The first driving part 42: The second driving element 44: Latch 46: Bridge piece 48: Elastic element 50: The first limit part 52: The first buckle part 54: The second limit part 56: The second buckle part 58: Oblique guide structure 60: perforated 62: bump 64: Ontology 66: The first chute 68: Second chute D1: first direction D2: Second direction D3: third direction

FIG. 1 is a schematic diagram of the appearance of a folding bicycle according to an embodiment of the present invention. Figures 2 to 6 are schematic views of the pipe fixing device according to the embodiment of the present invention at different stages of operation. FIG. 7 and FIG. 8 are partial structural diagrams of the pipe fixing device according to the embodiment of the present invention.

26: Pipe fixing device

34: The first pipe fitting

36: Second pipe fitting

38: Snaps

40: The first driving part

42: The second driving element

44: Latch

46: Bridge piece

48: Elastic element

50: The first limit part

52: The first buckle part

54: The second limit part

56: The second buckle part

66: The first chute

68: Second chute

Claims (14)

A pipe fitting fixing device applied to a bicycle, comprising: a first pipe member, which has a first limiting portion and a first buckling portion; a second pipe piece rotatably connected to the first pipe piece, the second pipe piece has a second limiting portion and a second buckling portion; an engaging piece movably arranged on the first pipe piece for engaging or separating from the first buckling portion and the second buckling portion; A first driving member is rotatably disposed on at least one of the first pipe member and the second pipe member, the first driving member can rotate between a first position and a second position, the first driving member When the piece is located at the first position, the engaging piece is driven to separate the first buckling portion and the second buckling portion, and when the piece is located at the second position, the engaging piece is pulled to engage the first buckling portion and the second buckling portion. a second snap portion to limit the rotation between the first tubular member and the second tubular member; and A latch member is movably disposed on the first driving member and used for passing through the first limiting portion and the second limiting portion to limit the rotation between the first pipe member and the second pipe member. The pipe fixing device according to claim 1, wherein the first driving member includes a through hole, and an inner wall of the through hole has a protrusion, the latch member includes a body and a first chute, the body is inserted into The through hole enables the first sliding slot to be slidably sleeved on the protrusion. The pipe fixing device as claimed in claim 2, wherein the latch further comprises a second sliding groove, which is connected to the first sliding groove in a relative bending manner, and the body rotates relative to the through hole to allow the protrusion to enter the second chute. The pipe fixing device as claimed in claim 3, further comprising: a second driving member disposed on the latching member, the second driving member approaches or moves away from the first driving member when the protrusion slides along the first chute, and when the protrusion slides along the second sliding groove When the chute slides, it rotates relative to the first driving member. The pipe fixing device as claimed in claim 1, further comprising: A bridge is connected to the engaging element and the first driving element, and drives the engaging element to approach or move away from the first buckling portion and the second buckling portion along with the rotation of the first driving element. The pipe fixing device as claimed in claim 1, further comprising: An elastic element is disposed between the engaging element and the first pipe element, and provides an elastic restoring force to drive the engaging element to engage with the first buckling portion and the second buckling portion. The pipe fixing device according to claim 1, wherein the second engaging portion has an oblique guiding structure, and the oblique guiding structure pushes the engaging element away from the first engaging portion and the second engaging portion. A bicycle comprising: A foldable vehicle frame, comprising a plurality of vehicle tubes connected to each other, one of the vehicle tubes of the plurality of vehicle tubes has a tube fitting fixing device, and the tube fitting fixing device comprises: a first pipe fitting, belonging to a front section of one of the vehicle pipes, having a first limiting portion and a first engaging portion; A second pipe part belonging to one of the vehicle tubes is connected to a rear part of the front section in a foldable manner, and is rotatably connected to the first pipe part, and the second pipe part has a second limit part and a second buckle department; an engaging piece movably arranged on the first pipe piece for engaging or separating from the first buckling portion and the second buckling portion; A first driving member is rotatably disposed on at least one of the first pipe member and the second pipe member, the first driving member can rotate between a first position and a second position, the first driving member When the piece is located at the first position, the engaging piece is driven to separate the first buckling portion and the second buckling portion, and when the piece is located at the second position, the engaging piece is pulled to engage the first buckling portion and the second buckling portion. a second snap portion to limit the rotation between the first tubular member and the second tubular member; and A latch member is movably disposed on the first driving member and used for passing through the first limiting portion and the second limiting portion to limit the rotation between the first pipe member and the second pipe member. The bicycle of claim 8, wherein the first driving member includes a through hole, and an inner wall of the through hole has a protrusion, the latch member includes a body and a first chute, the body is inserted into the through hole So that the first chute is slidably sleeved on the bump. The bicycle as claimed in claim 9, wherein the latch further comprises a second chute connected to the first chute in a relative bending manner, and the body rotates relative to the through hole to allow the protruding block to enter the first chute. Two chutes. The bicycle according to claim 10, wherein the pipe fixing device further comprises a second driving member disposed on the latching member, and the second driving member approaches or moves away from the protrusion when the protrusion slides along the first chute The first driving member rotates relative to the first driving member when the protrusion slides along the second chute. The bicycle according to claim 8, wherein the pipe fixing device further comprises a bridge connected to the engaging element and the first driving element, and drives the engaging element to approach or move away with the rotation of the first driving element The first buckling portion and the second buckling portion. The bicycle as claimed in claim 8, wherein the pipe fixing device further comprises an elastic element disposed between the engaging element and the first pipe element to provide an elastic restoring force to drive the engaging element to engage with the first pipe element. a buckling portion and the second buckling portion. The bicycle as claimed in claim 8, wherein the second engaging portion has an oblique guiding structure, and the oblique guiding structure pushes the engaging member away from the first engaging portion and the second engaging portion.

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