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CN-121973880-A - Quick-dismantling and quick-assembling structure for pedals and cranks

CN121973880ACN 121973880 ACN121973880 ACN 121973880ACN-121973880-A

Abstract

The invention discloses a quick-dismantling and quick-assembling structure of a pedal and a crank, which comprises the pedal with a mandrel rotatably arranged and the crank with a mandrel assembly hole at the lower end, wherein the assembly end of the mandrel is matched with the mandrel assembly hole of the crank in an anti-rotation inserting and installing way, an assembly plane is formed on the outer side surface of the end of the crank, which is provided with the mandrel assembly hole, a button buckle assembly is assembled on the assembly plane, and the button buckle assembly is clamped with the mandrel in an axial anti-disengaging way. The invention abandons the traditional installation mode of threaded connection between the pedal mandrel and the crank, realizes rapid installation and disassembly between the pedal and the crank by adopting the button buckle component, has novel integral design, safety and stability, simple operation and strong market competitiveness.

Inventors

  • Ye Kaiwang
  • YU JIPING
  • HU YINDONG
  • YANG KUN
  • XU LIYONG

Assignees

  • 宁波巨隆机械股份有限公司

Dates

Publication Date
20260505
Application Date
20260127

Claims (10)

  1. 1. The pedal and crank quick-disassembly and quick-assembly structure comprises a pedal (1) with a mandrel (2) rotatably arranged and a crank (3) with a mandrel assembly hole (3 a) arranged at the lower end, and is characterized in that the assembly end (21) of the mandrel (2) is matched with the mandrel assembly hole (3 a) of the crank (3) in an anti-rotation inserting and mounting mode, an assembly plane (31) is formed on the outer side face of the end, provided with the mandrel assembly hole (3 a), of the crank (3), a button buckle assembly (4) is assembled on the assembly plane (31), and the button buckle assembly (4) is axially and anti-dislocation matched with the mandrel (2) to realize quick disassembly and quick assembly between the pedal (1) and the crank (3).
  2. 2. The quick-release and quick-assembly structure of the pedal and the crank, as set forth in claim 1, wherein the button buckle assembly (4) is composed of a crank buckle (41), a mandrel limiting button (42) and a return spring (43), the crank buckle (41) is fixedly mounted on an assembly plane (31) of the crank (3) through a bolt (44), the mandrel limiting button (42) is arranged in a movable cavity formed between the crank buckle (41) and the assembly plane (31) in a vertically movable manner, and the return spring (43) is located in the movable cavity and is used for providing spring force of an anti-release locking mandrel (2) for the mandrel limiting button (42).
  3. 3. The quick-release and quick-assembly structure of the pedal and the crank according to claim 2 is characterized in that the mandrel limiting button (42) consists of a U-shaped limiting ring (421) and a button (422) integrally connected with two support arms of the U-shaped limiting ring (421), the U-shaped limiting ring (421) is provided with an inner cavity (42 a) for the end of an assembly end (21) of the mandrel (2) to pass through, the button (422) is provided with a spring cavity (42 b) longitudinally communicated with the inner cavity (42 a), the reset spring (43) is elastically pressed in the spring cavity (42 b), an annular limiting groove (21 a) is formed on the assembly end (21) of the mandrel (2) near the end, a closed loop end (4212) at the lower end of the U-shaped limiting ring (421) is prevented from being blocked into the annular limiting groove (21 a) under the action of a spring force, the button (422) extends out of the movable cavity longitudinally, and the reset button (422) is pushed upwards, so that the annular limiting ring (4212) can be pushed down between the mandrel (421) and the annular limiting ring (21) to realize quick-release and quick-release of the assembly structure.
  4. 4. A quick-release and quick-assembly structure for pedals and cranks according to claim 3 is characterized in that a countersunk light hole (41 a) for a bolt (44) to penetrate through and a mandrel hole (41 b) for a head of an assembly end (21) of a mandrel (2) to penetrate through are formed in the crank buckle (41) in an up-down arrangement mode, a threaded hole (31 a) for being matched with the bolt (44) in a spiral mode is formed in the assembly plane (31), a limiting convex ring (411) for limiting the width of a movable cavity is formed on the inner side face of the crank buckle (41) in a surrounding mode, the upper end of a reset spring (43) is propped against the upper end of a spring cavity (42 b), and the lower end of the reset spring (43) is propped against the limiting convex ring (411).
  5. 5. The quick-release and quick-assembly structure for pedals and cranks according to claim 4, wherein the crank buckle (41) is formed with a buckle (412) for clamping the clasping crank (3) during installation.
  6. 6. The quick-release and quick-assembly structure for pedals and cranks according to claim 5, wherein two sides of the crank buckle (41) are respectively provided with a flank (413) for limiting the upward movement upper limit of the mandrel limiting button (42), and the top surface of an inner cavity of the flank (413) is matched with the limiting jacking joint of a shoulder (4211) at the upper part of the U-shaped limiting ring (421).
  7. 7. The quick-release and quick-assembly structure for pedals and cranks according to claim 6, wherein two support arms of the U-shaped limiting ring (421) are respectively provided with a strip-shaped guide hole (4213), and guide columns matched with sliding sleeves of the guide holes (4213) and used for providing guidance for up-and-down movement of the mandrel limiting button (42) are arranged in inner cavities of the side wings (413).
  8. 8. The quick-release and quick-assembly structure for pedals and cranks according to claim 7, wherein two convex strips (3 b) for preventing the spindle (2) from rotating relative to the crank (3) are formed in the spindle assembly hole (3 a) in a moderate radian manner, and correspondingly, two grooves (21 b) for being matched with the convex strips (3 b) in an inserting manner are formed in the assembly end (21) of the spindle (2).
  9. 9. The quick-release and quick-assembly structure of a pedal and a crank according to claim 8, wherein the assembly end (21) of the mandrel (2) is provided with a positioning annular surface (211) for being matched with the circumferential surface of an inner hole of the mandrel assembly hole (3 a), and the assembly end (21) of the mandrel (2) is also sleeved with a PU ring (5) or a spring gasket for eliminating the assembly gap between the mandrel (2) and the crank (3).
  10. 10. The quick release and quick assembly structure of a pedal and a crank as claimed in claim 9, wherein the crank clasp (41) is an integral piece formed by injection molding of a composite material.

Description

Quick-dismantling and quick-assembling structure for pedals and cranks Technical Field The invention relates to the technical field of bicycle accessories, in particular to a quick-dismantling and quick-assembling structure capable of realizing quick-dismantling and quick-assembling of a bicycle pedal and a bicycle crank, and specifically relates to a quick-dismantling and quick-assembling structure of the pedal and the crank. Background In the prior art, the traditional pedals and the crank are connected through threads, and the pedals connected through the threads have the forward and reverse problems due to the threads, so that the assembly needs to be carried out by taking the left pedal or the right pedal as an attention. The assembly method is operated by adopting a spanner or an internal hexagon, so that the replacement of a user is difficult, and particularly, the threaded connection is easy to scrap a mandrel or a crank due to sliding teeth. Disclosure of Invention The technical problem to be solved by the invention is to provide a quick-dismantling and quick-assembling structure of a pedal and a crank, which aims at the current state of the art and has the advantages of novel structure, safety, stability and simple and quick operation. The technical scheme adopted for solving the technical problems is as follows: A quick-dismantling and quick-assembling structure of pedals and cranks comprises pedals with mandrels rotatably arranged and cranks with mandrel assembly holes at the lower ends, wherein the assembly ends of the mandrels are matched with the mandrel assembly holes of the cranks in an anti-rotation inserting and installing mode, an assembly plane is formed on the outer side face of the end, provided with the mandrel assembly holes, of each crank in a forming mode, a button buckle assembly is assembled on the assembly plane, and the button buckle assembly is clamped with the mandrels in an axial anti-disengaging mode to realize quick-dismantling and quick-assembling of the pedals and the cranks. In order to optimize the technical scheme, the specific measures adopted further comprise: The button buckle assembly is formed by assembling a crank buckle, a mandrel limiting button and a reset spring, wherein the crank buckle is fixedly arranged on an assembling plane of a crank through a bolt, the mandrel limiting button can be arranged in a movable cavity formed between the crank buckle and the assembling plane in a vertically movable mode, and the reset spring is positioned in the movable cavity and used for providing spring force of an anti-falling locking mandrel for the mandrel limiting button. The mandrel limiting button consists of a U-shaped limiting ring and buttons integrally connected with two support arms of the U-shaped limiting ring, wherein the U-shaped limiting ring is provided with an inner cavity for the end head of the mandrel assembly end to pass through, the buttons are provided with spring cavities longitudinally communicated with the inner cavity, a reset spring is elastically pressed in the spring cavities, an annular limiting groove is formed on the assembly end of the mandrel near the end head, a closed loop end at the lower end of the U-shaped limiting ring is prevented from being blocked into the annular limiting groove under the action of a spring force to realize quick assembly between a pedal and a crank, the buttons extend upwards to form movable cavities, and the press buttons can enable the mandrel limiting button to compress the reset spring to move downwards integrally to force the closed loop end of the U-shaped limiting ring to exit the annular limiting groove to realize quick disassembly between the pedal and the crank. The crank buckle is provided with a countersunk head unthreaded hole for a bolt to pass through and a mandrel hole for a head of a mandrel assembly end to pass through, the assembly plane is provided with a threaded hole matched with a bolt screw, the inner side surface of the crank buckle surrounds the countersunk head unthreaded hole and is provided with a limiting convex ring for limiting the width of the movable cavity, the upper end of a return spring is propped against the upper end of the spring cavity, and the lower end of the return spring is propped against the limiting convex ring. The crank clamping buckle is provided with a buckle for clamping in the enclasping crank during installation. The two sides of the crank buckle are respectively provided with a flank for limiting the upper limit of the upward movement of the mandrel limiting button, and the top surface of the inner cavity of the flank is matched with the shoulder limiting jacking joint at the upper part of the U-shaped limiting ring. Two support arms of the U-shaped limiting ring are respectively provided with a strip-shaped guide hole, and guide posts matched with the guide hole sliding sleeves and used for providing guidance for the up-and-down movement of the mandre