A quick lock hidden folding fork structure

Abstract

The utility model discloses a quick lock hidden folding structure folding front fork, including bicycle front fork, including quick lock hidden folding folder, and the front pipe is connected with the front fork through quick lock hidden folding folder, and quick lock hidden folding folder includes the base connected with the front fork, the top cover connected with the front pipe, the hidden folding handle, the lock tongue connected with hidden folding handle, and the base, top cover, hidden folding handle rotation is connected, and hidden folding handle rotates and drives lock tongue to remove, the plurality of upper protruding jaw that projects outward is equipped with in the base top, and the plurality of lower protruding jaw that projects outward is equipped with in the top cover bottom, and lower protruding jaw and upper protruding jaw interval cooperation arrangement is set up, and lower protruding jaw and upper protruding jaw inboard are equipped with lock groove respectively, and the side rotation is connected of hidden folding handle rotary end and the base, top cover, and lock tongue is located in the lock groove when the base, top cover connects. The utility model can make the firm reliable when the detachable folding front fork connects, and it is also convenient and easy to use when disassembling and connecting.

Description

Technical Field

[0001] This utility model relates to the technical field of bicycle frames, and in particular to a folding fork with a fast-lock concealed folding structure. Background Technology

[0002] The front fork is the front part of a bicycle frame. One end of the front fork is connected to the head tube, and the other end is divided into the left front fork and the right front fork, which are connected to the two ends of the front wheel axle respectively. On some bicycles, the connection between the front fork and the head tube is fixed. In detachable and foldable connection structures, the strength of the connection structure is a more important design point, because it is not only required that the connection be firm, but also that it be easy to disassemble, fold, and fix. Utility Model Content

[0003] The purpose of this invention is to optimize the structure of detachable and foldable forks in the prior art and to propose a quick-lock concealed folding structure folding fork, which can make the detachable and foldable fork connection firm and reliable, and also convenient and easy to use for disassembly and connection.

[0004] To achieve the above objectives, this utility model proposes a folding fork with a fast-lock concealed folding structure, including a bicycle fork and a fast-lock concealed folding mechanism. The fork is connected to the head tube via the fast-lock concealed folding mechanism, and the fork includes a left fork and a right fork. The fast-lock concealed folding mechanism includes a base connected to the fork, a top cover connected to the head tube, a concealed folding handle, and a locking tongue connected to the concealed folding handle. The base, top cover, and concealed folding handle are rotatably connected, and the locking tongue moves when the concealed folding handle rotates. The left and right forks are respectively connected to the bottom sides of the base. A handle hiding space is provided between the base and the right front fork. The base is hollow inside, and the top of the base has multiple outwardly protruding upper claws. The top of the top cover is connected to the front tube. The top cover is hollow inside, and the bottom of the top cover has multiple outwardly protruding lower claws. The lower claws and upper claws are spaced apart and fitted together. The inner sides of the lower claws and upper claws are respectively provided with locking grooves. The rotating end of the hidden folding handle is rotatably connected to the side of the base and the top cover. When the base and the top cover are connected, the gripping end of the hidden folding handle is located on one side of the base or in the handle hiding space. The locking tongue is located in the locking groove when the base and the top cover are connected.

[0005] In this design, the base and top cover are rotatably connected by a pin. When connected, the upper and lower protruding claws are spaced and pressed together, and the locking grooves of the upper and lower protruding claws are connected to form a complete locking groove. Rotating the concealed folding handle pulls the bolt, allowing the bolt to enter the locking groove, thereby locking the base and top cover. When it is necessary to disengage the base and top cover, the concealed folding handle is rotated in the opposite direction. The concealed folding handle moves the bolt together, disengaging the bolt from the locking groove. Then the base and top cover can be rotated and separated, and the front wheel part can also be folded.

[0006] As a preferred embodiment of this utility model, the base has a left ear seat and a right ear seat on one side, and the top cover has a left ear plate and a right ear plate on one side. The rotating end of the hidden folding handle is rotatably connected to the left ear seat, the right ear seat, the left ear plate, and the right ear plate via a pin.

[0007] As a preferred embodiment of this utility model, the rotating end of the concealed folding handle is provided with a pin hole and a connecting hole, and is connected to the locking tongue through an eccentric wheel, a pull ring, and a double-ended bolt. The eccentric wheel is circular and has an eccentric pin hole and an eccentric connecting hole that are not concentric with the center of the eccentric wheel. The eccentric pin hole and the eccentric connecting hole are connected to the rotating end of the concealed folding handle through a pin and a connecting shaft, respectively. One end of the pull ring is provided with a wheel hole that matches the shape of the eccentric wheel, and the eccentric wheel is located in the wheel hole. The other end of the pull ring is connected to the locking tongue through a double-ended bolt. One side of the locking tongue is connected to the double-ended bolt, and the other side is arc-shaped. When the concealed folding handle of this design is rotated, it drives the eccentric wheel to rotate through the coupling. Since the eccentric coupling hole and the eccentric pin hole of the eccentric wheel are not on the center, when the eccentric wheel rotates around the eccentric pin hole, it generates a pushing and pulling effect on the external pull ring, allowing the lock tongue to enter and exit the lock groove. The front side of the lock tongue is arc-shaped, which is formed by the arc-shaped upper and lower protruding claws.

[0008] In a preferred embodiment of this utility model, the pull ring has a positioning groove on its outer side, the concealed folding handle is right-angled, and the concealed folding handle has a locking rod hole, a locking rod passing through the locking rod hole, a spring, a pull button, and a set screw. The locking rod has a threaded section, and a step is provided between the threaded section and the locking rod. The pull button has a threaded hole and is threadedly connected to the locking rod. The set screw passes through the pull button and extends into the concealed folding handle to contact the locking rod. The spring is located between the step and the set screw. When locking the concealed folding handle, the pull button is first pulled down. When the concealed folding handle is rotated to the locked position, the pull button is released. Under the action of the spring, the locking rod extends and enters the positioning groove on the outer side of the pull ring, preventing the pull ring from becoming loose and causing the locking tongue to be unstable. When unlocking, the pull button is also first pulled down to disengage the locking rod from the positioning groove of the pull ring, and then the concealed folding handle is rotated to pull out the locking tongue to unlock.

[0009] As a preferred embodiment of this utility model, the bottom of the base is provided with a positioning slot near the side of the concealed folding handle. The concealed folding handle is right-angled and is provided with a button-type locking hook, a torsion spring, and a locking shaft. The front end of the button-type locking hook cooperates with the positioning slot. The inner side of the concealed folding handle is provided with an inwardly recessed locking hook groove. The rear end of the button-type locking hook is located in the locking hook groove and is rotatably connected to the concealed folding handle through the locking shaft. The rear end of the button-type locking hook is also provided with a button protruding from the inner side of the concealed folding handle. The torsion spring is sleeved on the locking shaft. One end of the torsion spring presses against the bottom of the locking hook groove, and the other end presses against the rear end of the button-type locking hook. In this design, the button-type locking hook engages with the positioning slot. When the concealed folding handle locks the base and top cover, the front locking hook of the button-type locking hook can enter the positioning slot and lock in place. When the front locking hook of the button-type locking hook enters the positioning slot, it can rotate around the locking shaft and reset under the action of the torsion spring, locking the positioning slot wall and preventing the concealed folding handle from loosening. When it is necessary to open, press the button at the rear end of the button-type locking hook to make the front locking hook rotate and disengage from the positioning slot. After rotating the concealed folding handle, release the rear button, and the front locking hook will reset under the action of the torsion spring.

[0010] In a preferred embodiment of this utility model, the rotating end of the concealed folding handle is provided with a left earring and a right earring, and the gripping end of the concealed folding handle is provided with a pull ring, which is connected to the left and right earrings. The concealed folding handle of this embodiment has a simple structure; in use, one finger can be inserted through the pull ring to rotate the concealed folding handle, thereby pulling the latch in and out of the lock slot.

[0011] The beneficial effects of this utility model are that it enables the detachable and foldable front fork to be firmly and reliably connected, and is also convenient and easy to use for disassembly and connection.

[0012] The features and advantages of this utility model will be described in detail through embodiments and accompanying drawings. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a locking structure according to the present invention.

[0014] Figure 2 This is a schematic diagram of the unlocking structure of this utility model.

[0015] Figure 3 This is an exploded view of the structure of this utility model.

[0016] Figure 4 This is a cross-sectional structural diagram of this utility model.

[0017] Figure 5 This is a structural schematic diagram of a quick-lock concealed folding device according to this utility model.

[0018] Figure 6 This is a schematic diagram of the structure of the concealed folding handle of this utility model.

[0019] Figure 7 yes Figure 6 A schematic diagram of a structure exploded.

[0020] Figure 8 This is an exploded view of another structure of the concealed folding handle of this utility model.

[0021] Figure 9 yes Figure 8 A schematic diagram of an internal structure.

[0022] Figure 10 This is a schematic diagram of the third structure of this practical concealed folding handle.

[0023] In the diagram: 1-Front fork; 2-Folding folding mechanism; 3-Head tube; 4-Lock; 5-Top cover

[0024] 6- Concealed folding handle 7- Locking tongue 8- Pin 9- Connecting shaft 11- Left front fork

[0025] 12-Right front fork 13-Handlebar concealment space 41-Upper cam 42-Left ear mount

[0026] 43-Right ear seat; 44-Positioning slot; 51-Lower protruding claw; 52-Left ear plate

[0027] 53-Right ear plate; 61-Pin hole; 62-Coupling hole; 63-Eccentric wheel; 64-Pull ring

[0028] 65 - Double-ended bolt; 66 - Eccentric pin hole; 67 - Eccentric coupling hole; 68 - Wheel hole

[0029] 69-Positioning groove; 71-Locking groove; 611-Locking rod hole; 612-Locking rod; 613-Spring

[0030] 614 - Pull button; 615 - Set screw; 621 - Button-type locking hook; 622 - Torsion spring

[0031] 623-Locking shaft; 624-Locking hook groove; 625-Button; 631-Left earring

[0032] 632 - Right earring; 633 - Handrail. Detailed Implementation

[0033] See Figures 1-10 This utility model provides the following technical solution:

[0034] A folding fork with a fast-lock concealed folding mechanism includes a bicycle fork 1 and a fast-lock concealed folding mechanism 2. The fork 1 is connected to the front tube 3 via the fast-lock concealed folding mechanism 2. The fork 1 includes a left front fork 11 and a right front fork 12. The fast-lock concealed folding mechanism 2 includes a base 4 connected to the fork 1, a top cover 5 connected to the front tube 3, a concealed folding handle 6, and a locking tongue 7 connected to the concealed folding handle 6. The base 4, top cover 5, and concealed folding handle 6 are rotatably connected. When the concealed folding handle 6 rotates, it drives the locking tongue 7 to move. The left front fork 11 and the right front fork 12 are respectively connected to the bottom sides of the base 4. The bottom of the base 4, the left front fork 11, and the right front fork 12 are connected to each other. The base 4 is hollow inside and has multiple protruding upper claws 41 at the top. The top cover 5 is connected to the front tube 3. The top cover 5 is hollow inside and has multiple protruding lower claws 51 at the bottom. The lower claws 51 and the upper claws 41 are spaced apart and fitted together. The inner sides of the lower claws 51 and the upper claws 41 are respectively provided with locking grooves 71. The rotating end of the hidden folding handle 6 is rotatably connected to the side of the base 4 and the top cover 5. When the base 4 and the top cover 5 are connected, the gripping end of the hidden folding handle 6 is located on the side of the base 4 or inside the handle hiding space 13. The locking tongue 7 is located inside the locking groove 71 when the base 4 and the top cover 5 are connected.

[0035] The base 4 has a left ear seat 42 and a right ear seat 43 on one side, and the top cover 5 has a left ear plate 52 and a right ear plate 53 on one side. The rotating end of the hidden folding handle 6 is rotatably connected to the left ear seat 42, the right ear seat 43, the left ear plate 52, and the right ear plate 53 via a pin 8.

[0036] The rotating end of the concealed folding handle 6 is provided with a pin hole 61 and a connecting shaft hole 62, and is connected to the locking tongue 7 through an eccentric wheel 63, a pull ring 64, and a double-ended bolt 65. The eccentric wheel 63 is circular and has an eccentric pin hole 66 and an eccentric connecting shaft hole 67 that are not concentric with the center of the eccentric wheel 63. The eccentric pin hole 66 and the eccentric connecting shaft hole 67 are connected to the rotating end of the concealed folding handle 6 through a pin 8 and a connecting shaft 9, respectively. One end of the pull ring 64 is provided with a wheel hole 68 that matches the shape of the eccentric wheel 63. The eccentric wheel 63 is located in the wheel hole 68. The other end of the pull ring 64 is connected to the locking tongue 7 through a double-ended bolt 65. One side of the locking tongue 7 is connected to the double-ended bolt 65, and the other side is arc-shaped.

[0037] like Figure 8 , Figure 9As shown, the pull ring 64 has a positioning groove 69 on its outer side, the concealed folding handle 6 is right-angled, the concealed folding handle 6 has a locking rod hole 611, a locking rod 612 passing through the locking rod hole 611, a spring 613, a pull button 614, and a set screw 615. The locking rod 612 has a threaded section 616, and a step is provided between the threaded section 616 and the locking rod 612. The pull button 614 has a threaded hole and is threadedly connected to the locking rod 612. The set screw 615 passes through the pull button 614 and extends into the concealed folding handle 6 to contact the locking rod 612. The spring 613 is located between the step and the set screw 615.

[0038] like Figure 6 , Figure 7 As shown, the bottom of the base 4 is provided with a positioning slot 44 near the side of the hidden folding handle 6. The hidden folding handle 6 is right-angled and is provided with a button-type locking hook 621, a torsion spring 622, and a locking shaft 623. The front end of the button-type locking hook 621 is engaged with the positioning slot 44. The inner side of the hidden folding handle 6 is provided with an inwardly recessed locking hook groove 624. The rear end of the button-type locking hook 621 is located in the locking hook groove 624 and is rotatably connected to the hidden folding handle 6 through the locking shaft 623. The rear end of the button-type locking hook 621 is also provided with a button 625 protruding from the inner side of the hidden folding handle 6. The torsion spring 622 is sleeved on the locking shaft 623. One end of the torsion spring 622 presses against the bottom of the locking hook groove 624, and the other end presses against the rear end of the button-type locking hook 621.

[0039] like Figure 10 As shown, the rotating end of the concealed folding handle 6 is provided with a left earring 631 and a right earring 632, and the gripping end of the concealed folding handle 6 is provided with a handle ring 633, which is connected to the left earring 631 and the right earring 632.

[0040] The working process of this utility model:

[0041] The base 4 and top cover 5 are rotatably connected by a pin 8. When connected, the upper protrusion 41 and lower protrusion 51 are close together and spaced apart. The locking grooves 71 of the upper protrusion 41 and lower protrusion 51 are connected to form a complete locking groove. When the hidden folding handle 6 is rotated, the locking tongue 7 is pulled by the eccentric wheel 63 and the pull ring 64, so that the locking tongue 7 enters the locking groove 71, thereby locking the base 4 and the top cover 5. When it is necessary to disengage the base 4 and the top cover 5, the hidden folding handle 6 is rotated in the opposite direction. When the hidden folding handle 6 is rotated, the locking tongue 7 is moved together by the eccentric wheel 63 and the pull ring 64. The locking tongue 7 disengages from the locking groove 71, and then the base 4 and the top cover 5 can be rotated and separated, and the front wheel part can also be folded.

[0042] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A folding fork with a fast-lock concealed folding structure, comprising a bicycle fork, characterized in that: The fork includes a fast-lock concealed folding mechanism, and the fork is connected to the front tube via the fast-lock concealed folding mechanism. The fork includes a left fork and a right fork. The fast-lock concealed folding mechanism includes a base connected to the front fork, a top cover connected to the front tube, a concealed folding handle, and a locking tongue connected to the concealed folding handle. The base, top cover, and concealed folding handle are rotatably connected, and the concealed folding handle rotates to move the locking tongue. The base is connected to the left front fork and the right front fork on both sides of the bottom. There is a handle hiding space between the bottom of the base, the left front fork and the right front fork. The base is hollow inside. The top of the base is provided with multiple outward protruding claws. The top of the top cover is connected to the front tube. The top cover is hollow inside. The bottom of the top cover is provided with multiple outwardly protruding lower claws. The lower claws and upper claws are arranged in a spaced-out fit. The inner sides of the lower claws and upper claws are respectively provided with locking grooves. The hidden folding handle's rotating end is rotatably connected to the side of the base and top cover. The hidden folding handle's gripping end is located on one side of the base or within the handle's hidden space when the base and top cover are connected. The locking tongue is located within the locking groove when the base and top cover are connected.

2. The folding fork with a fast-lock concealed folding structure as described in claim 1, characterized in that: The base has a left ear seat and a right ear seat on one side, and the top cover has a left ear plate and a right ear plate on one side. The rotating end of the hidden folding handle is rotatably connected to the left ear seat, the right ear seat, the left ear plate, and the right ear plate via a pin.

3. A folding fork with a quick-lock concealed folding structure as described in claim 2, characterized in that: The concealed folding handle's rotating end is provided with a pin hole and a connecting hole, and is connected to the locking tongue via an eccentric wheel, a pull ring, and a double-ended bolt. The eccentric wheel is circular and has an eccentric pin hole and an eccentric connecting hole that are not concentric with the wheel's center. The eccentric pin hole and the eccentric connecting hole are connected to the concealed folding handle's rotating end via pins and connecting shafts, respectively. One end of the pull ring has a wheel hole that matches the shape of the eccentric wheel, and the eccentric wheel is located in the wheel hole. The other end of the pull ring is connected to the locking tongue via a double-ended bolt. One side of the locking tongue is connected to the double-ended bolt, and the other side is arc-shaped.

4. A folding fork with a quick-lock concealed folding structure as described in claim 3, characterized in that: The pull ring has a positioning groove on its outer side. The concealed folding handle is right-angled. The concealed folding handle has a locking rod hole, a locking rod passing through the locking rod hole, a spring, a pull button, and a set screw. The locking rod has a threaded section. A step is provided between the threaded section and the locking rod. The pull button has a threaded hole and is threadedly connected to the locking rod. The set screw passes through the pull button and extends into the concealed folding handle to contact the locking rod. The spring is located between the step and the set screw.

5. A folding fork with a quick-lock concealed folding structure as described in claim 1, characterized in that: The base has a positioning slot near the bottom of the concealed folding handle. The concealed folding handle is right-angled and includes a button-type locking hook, a torsion spring, and a locking shaft. The front end of the button-type locking hook engages with the positioning slot. The inner side of the concealed folding handle has an inwardly recessed locking hook groove. The rear end of the button-type locking hook is located within the locking hook groove and is rotatably connected to the concealed folding handle via the locking shaft. The rear end of the button-type locking hook also has a button protruding from the inner side of the concealed folding handle. The torsion spring is sleeved on the locking shaft, with one end pressing against the bottom of the locking hook groove and the other end pressing against the rear end of the button-type locking hook.

6. A folding fork with a fast-lock concealed folding structure as described in claim 1, characterized in that: The hidden folding handle has a left earring and a right earring at its rotating end, and a handle ring at its gripping end, which is connected to the left earring and the right earring.

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