Quick release structure of bicycle crank and bicycle

Abstract

The utility model belongs to the technical field of bicycles, and discloses a quick release structure of a bicycle crank, which is applied to a linkage shaft sleeve of a bicycle and comprises a crank main body, and a clamping shaft matched with the linkage shaft sleeve is arranged on one side of the end part of the crank main body; a containing groove matched with the buckle assembly is formed in the middle of the clamping shaft in a penetrating mode, the buckle assembly is arranged in the containing groove, the clamping shaft is inserted into the linkage shaft sleeve, and the buckle end of the buckle assembly can be correspondingly clamped into the clamping groove of the linkage shaft sleeve; the releasing end of the buckle assembly is pressed so that the buckle end can be separated from the clamping groove. The buckle assembly is arranged in the containing groove, the clamping shaft is inserted into the linkage shaft sleeve, and the buckle end of the buckle assembly can be correspondingly clamped into the clamping groove of the linkage shaft sleeve. The releasing end of the buckle assembly is pressed, so that the buckle end can be separated from the clamping groove, the clamping shaft can be detached from the linkage shaft sleeve, the crank of the bicycle can be rapidly detached, the mode is simple, tools are not needed, and a user can rapidly convert the bicycle into the balance bicycle by himself / herself.

Description

Technical Field

[0001] The utility model relates to a bicycle crank quick-release structure and a bicycle, belonging to the technical field of bicycles. Background Art

[0002] The bicycle crank is an important part of the bicycle, which mainly plays the role of transmitting force. When we step on the pedal, the crank drives the connecting rod to rotate the rear wheel, thereby driving the bicycle forward.

[0003] Among the existing products, there are designs that combine a balance bike and a bicycle into one, mainly to meet the learning and entertainment needs of children of different ages. This two-in-one product design aims to allow children to first learn how to keep balance through a balance bike, and then transition to riding a bicycle, so that they can master riding skills more safely and effectively.

[0004] However, the crank of the existing bicycle cannot be quickly disassembled, and the disassembly and assembly method is very complicated and requires tools to disassemble, which makes it difficult for users to convert the bicycle into a balance car by themselves. Utility Model Content

[0005] In view of the deficiencies of the above-mentioned prior art, the purpose of the utility model is to provide a bicycle crank quick-release structure, by arranging a buckle assembly in a receiving groove, inserting a buckle shaft into a linkage sleeve, and the buckle end of the buckle assembly can be correspondingly snapped into the buckle groove of the linkage sleeve; pressing the unlocking end of the buckle assembly so that the buckle end can be disengaged from the buckle groove, and the buckle shaft can be removed from the linkage sleeve, and the crank of the bicycle can be quickly disassembled, the method is simple and does not require tools, and the user can quickly convert the bicycle into a balance car by themselves.

[0006] To achieve the above object, the utility model provides a bicycle crank quick-release structure, which is applied to a linkage sleeve of a bicycle, and comprises: a crank body, one side of the end of the crank body is provided with a clamping shaft adapted to the linkage sleeve;

[0007] A buckle assembly, a receiving groove adapted to the buckle assembly is provided through the middle of the buckle shaft, the buckle assembly is arranged in the receiving groove, the buckle shaft is inserted into the linkage sleeve, and the buckle end of the buckle assembly can be correspondingly inserted into the buckle groove of the linkage sleeve; the buckle end of the buckle assembly is pressed so that the buckle end can be separated from the buckle groove, and the buckle shaft can be removed from the linkage sleeve.

[0008] Further, as a more preferred embodiment of the utility model, the buckle assembly includes: a push rod, one end of the push rod is provided with a cap I with an outer diameter larger than the push rod, and one end of the receiving groove is provided with a stepped groove I adapted to the push rod and the cap I; a bayonet, one end of the bayonet is provided with a shoulder I with an outer diameter larger than the bayonet, the shoulder I is provided with a chamfer, and the outer end of the shoulder I is provided with a cap II with an outer diameter larger than the shoulder I; the other end of the receiving groove is provided with a stepped groove II adapted to the bayonet, the shoulder I and the cap II; a plurality of beads; the stepped groove II corresponds to the shoulder A plurality of ball grooves are arranged at the position where the Ⅰ is inserted, the ball grooves are connected to the outside of the card shaft, the card balls are arranged in the ball grooves, and the outer ports of the ball grooves are arranged with annular card edges to prevent the card balls from falling out; the push rod is inserted into the step groove Ⅰ, and the card pin is inserted into the step groove Ⅱ, the push rod and the card pin are detachably connected, the push rod is provided with an elastic member, and the two ends of the elastic member can respectively abut against the step groove Ⅰ and the card cap Ⅰ; the elastic reset of the elastic member keeps the shaft shoulder Ⅰ of the card pin tightly against the card ball, so that a part of the card ball is exposed from the ball groove, so as to be carded into the card groove of the linkage shaft sleeve; the push rod is pressed, and the shaft shoulder of the card pin

[0009] Ⅰ exits stepped groove Ⅱ, and the card bead can be separated from the card groove of the linkage sleeve.

[0010] Furthermore, as a more preferred embodiment of the present invention, the outer end of the clamping shaft is provided with clamping teeth, and the clamping teeth are adapted to the linkage sleeve.

[0011] Furthermore, as a more preferred embodiment of the present invention, a shaft shoulder II is provided in the middle of the clamping shaft.

[0012] Furthermore, as a more preferred embodiment of the present invention, the bicycle crank quick-release structure also includes a pedal member, and the pedal member is arranged on the other side of the crank body away from the end of the clamping shaft, and the pedal member and the crank body are perpendicular to each other and rotatably connected.

[0013] Furthermore, as a more preferred embodiment of the present invention, the ejector rod and the bayonet pin are connected by threads.

[0014] Furthermore, as a more preferred embodiment of the present invention, the elastic member is a spring.

[0015] Based on the same utility model concept, the utility model also provides a bicycle, comprising the above-mentioned bicycle crank quick-release structure and linkage shaft sleeve, and the bicycle crank quick-release structure is buckledly connected to the linkage shaft sleeve.

[0016] Compared with the prior art, the beneficial effects are:

[0017] 1. The utility model arranges the buckle assembly in the accommodating groove, inserts the buckle shaft into the linkage sleeve, and the buckle end of the buckle assembly can be correspondingly inserted into the buckle groove of the linkage sleeve; the buckle end of the buckle assembly is pressed so that the buckle end can be separated from the buckle groove, and the buckle shaft can be removed from the linkage sleeve, and the crank of the bicycle can be quickly removed. The method is simple and does not require tools. The user can quickly convert the bicycle into a balance car by himself; the design of the quick-detachable crank is also convenient for packaging and selling bicycles.

[0018] 2. In the utility model, a push rod and a bayonet pin are used to be inserted into the step groove I and the step groove II, and the two ends of the elastic member can respectively abut against the step groove I and the card cap I; the elastic reset of the elastic member keeps the shoulder I of the bayonet pin pressed against the card bead, so that a part of the card bead is exposed from the ball groove, and the exposed part can be stuck in the card groove of the linkage sleeve; the user can directly press the push rod to overcome the elastic force of the elastic member, push the shoulder I of the bayonet pin to withdraw from the step groove II, and the exposed part of the card bead can be separated from the card groove of the linkage sleeve, and the card groove is released. The crank body can be pulled out from the linkage sleeve, so as to achieve the purpose of quickly removing the bicycle crank. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure expansion of the bicycle crank quick release structure of the embodiment.

[0020] Figure 2 It is a schematic cross-sectional view of a quick-release structure of a bicycle crank in an embodiment.

[0021] Figure 3 It is a structural schematic diagram of a bicycle crank quick-release structure according to an embodiment.

[0022] Figure 4 Schematic diagram of a bicycle provided with a bicycle crank quick-release structure in an embodiment.

[0023] Reference numerals:

[0024] 1-linkage sleeve, 11-slot;

[0025] 2- crank body, 21- clamping shaft, 22- receiving groove, 221- step groove Ⅰ, 222- step groove Ⅱ, 2221- ball groove, 23- clamping tooth, 24- shaft shoulder Ⅱ;

[0026] 3- buckle assembly, 31- push rod, 311- clamping cap I, 32- clamping pin, 321- shaft shoulder I, 322- clamping cap II, 33- clamping bead, 34- elastic member; 4- pedal member; 5- bicycle. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of this application.

[0028] It should be noted that when an element is referred to as being "fixed on" or "set on" another component, it can be directly on the other component or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component.

[0029] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0031] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0032] Example

[0033] The present embodiment is intended to promote the solution to the problem that the crank of the existing bicycle cannot be quickly disassembled, and the disassembly and assembly method is very complicated and requires tools to disassemble and store, making it difficult for users to convert the bicycle into a balance car by themselves.

[0034] In this embodiment, the buckle assembly 3 is arranged in the accommodating groove 22, and the buckle shaft 21 is inserted into the linkage sleeve 1. The buckle end of the buckle assembly 3 can be correspondingly inserted into the buckle groove 11 of the linkage sleeve 1; the unlocking end of the buckle assembly 3 is pressed so that the buckle end can be separated from the buckle groove 11, and the buckle shaft 21 can be removed from the linkage sleeve 1, and the crank of the bicycle 5 can be quickly removed. The method is simple and does not require tools. The user can quickly convert the bicycle 5 into a balance car by himself.

[0035] refer to Figure 1 , 2 As shown in Figure 3, a bicycle crank quick-release structure is applied to the linkage sleeve 1 of the bicycle 5, comprising: a crank body 2, one side of the end of the crank body 2 is provided with a clamping shaft 21 adapted to the linkage sleeve 1; a buckle assembly 3, the middle part of the clamping shaft 21 is penetrated by a receiving groove 22 adapted to the buckle assembly 3, the buckle assembly 3 is arranged in the receiving groove 22, the clamping shaft 21 is inserted into the linkage sleeve 1, and the buckle end of the buckle assembly 3 can be correspondingly clamped into the clamping groove 11 of the linkage sleeve 1; the unlocking end of the buckle assembly 3 is pressed so that the buckle end can be separated from the clamping groove 11, and the clamping shaft 21 can be removed from the linkage sleeve 1.

[0036] refer to Figure 2 As shown, specifically, the buckle assembly 3 includes: a push rod 31, one end of the push rod 31 is provided with a cap I 311 with an outer diameter greater than that of the push rod 31, and one end notch of the accommodating groove 22 is provided with a stepped groove I 221 adapted to the push rod 31 and the cap I 311; a bayonet 32, one end of the bayonet 32 ​​is provided with a shoulder I 321 with an outer diameter greater than that of the bayonet 32, the shoulder I 321 is provided with a chamfer, and the outer end of the shoulder I 321 is provided with a cap II 322 with an outer diameter greater than that of the shoulder I 321; the other end notch of the accommodating groove 22 is provided with a stepped groove II 222 adapted to the bayonet 32, the shoulder I 321 and the cap II 322; a plurality of beads 33; a plurality of ball grooves 22 are provided at the position where the stepped groove II 222 corresponds to the insertion of the shoulder I 321 21, the ball groove 2221 is connected to the outside of the card shaft 21, the card ball 33 is arranged in the ball groove 2221, and the external port of the ball groove 2221 is provided with an annular card edge to limit the card ball 33 from falling out; the push rod 31 is inserted into the step groove Ⅰ221, and the card pin 32 is inserted into the step groove Ⅱ222, the push rod 31 and the card pin 32 are detachably connected, and the push rod 31 is provided with an elastic member 34, and the two ends of the elastic member 34 can respectively abut against the step groove Ⅰ221 and the card cap Ⅰ311; the elastic reset of the elastic member 34 keeps the shaft shoulder Ⅰ321 of the card pin 32 against the card ball 33, so that a part of the card ball 33 is exposed from the ball groove 2221, so as to be carded into the card groove 11 of the linkage sleeve 1; the push rod 31 is pressed, and the shaft shoulder Ⅰ321 of the card pin 32 withdraws from the step groove

[0037] Ⅱ222, the card bead 33 can be separated from the card groove 11 of the linkage sleeve 1.

[0038] refer to Figure 1 and 2 As shown, specifically, the outer end of the clamping shaft 21 is provided with a clamping tooth 23, and the clamping tooth 23 is adapted to the linkage sleeve 1. The clamping tooth 23 is used for the crank body 2 to clamp the linkage sleeve to rotate.

[0039] refer to Figure 1 and 2 As shown, specifically, a shaft shoulder II 24 is provided in the middle of the clamping shaft 21, and the shaft shoulder II 24 is used to limit the transition insertion of the clamping shaft 21.

[0040] refer to Figure 1 and 2 As shown, the bicycle crank quick-release structure of this embodiment further includes a pedal member 4. The pedal member 4 is disposed on the other side of the crank body 2 away from the clamping shaft 21. The pedal member 4 is perpendicular to the crank body 2 and rotatably connected.

[0041] refer to Figure 1 and 2 As shown, specifically, the push rod 31 and the bayonet pin 32 are connected by threads.

[0042] refer to Figure 1 and 2 As shown, specifically, the elastic member 34 is a spring.

[0043] refer to Figure 1 and 4 As shown, this embodiment further provides a bicycle 5 , comprising the above-mentioned bicycle crank quick-release structure and the linkage shaft sleeve 1 , wherein the bicycle crank quick-release structure is snap-connected to the linkage shaft sleeve 1 .

[0044] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bicycle crank quick release structure, applied to a bicycle linkage sleeve, characterized in that: include: A crank body, wherein a clamping shaft matching with the linkage sleeve is arranged on one side of the end of the crank body; A buckle assembly, a receiving groove adapted to the buckle assembly is provided through the middle of the buckle shaft, the buckle assembly is arranged in the receiving groove, the buckle shaft is inserted into the linkage sleeve, and the buckle end of the buckle assembly can be correspondingly inserted into the buckle groove of the linkage sleeve; the buckle end of the buckle assembly is pressed so that the buckle end can be separated from the buckle groove, and the buckle shaft can be removed from the linkage sleeve.

2. The bicycle crank quick release structure according to claim 1, characterized in that: The snap-on assembly includes: A push rod, one end of which is provided with a cap I having an outer diameter larger than that of the push rod, and a notch at one end of the receiving groove is provided with a stepped groove I adapted to the push rod and the cap I; A bayonet, one end of the bayonet is provided with a shoulder I with an outer diameter larger than that of the bayonet, the shoulder I is provided with a chamfer, the outer end of the shoulder I is provided with a cap II with an outer diameter larger than that of the shoulder I; the other end of the receiving groove is provided with a stepped groove II adapted to the bayonet, the shoulder I and the cap II; A plurality of clamping beads; a plurality of ball grooves are arranged at the position where the step groove II corresponds to the insertion of the shaft shoulder I, the ball grooves are connected to the outside of the clamping shaft, the clamping beads are arranged in the ball grooves, and the outer ports of the ball grooves are provided with an annular clamping edge to limit the clamping beads from falling out; The push rod is inserted into the step groove I, and the bayonet pin is inserted into the step groove II. The push rod and the bayonet pin are detachably connected. The push rod is provided with an elastic member, and the two ends of the elastic member can respectively abut against the step groove I and the clamping cap I; the elastic reset of the elastic member keeps the shoulder I of the bayonet pin pressed against the clamping bead, so that a part of the clamping bead is exposed from the ball groove and can be clamped into the clamping groove of the linkage sleeve; the push rod is pressed, and the shoulder I of the bayonet pin withdraws from the step groove II, and the clamping bead can be separated from the clamping groove of the linkage sleeve.

3. The bicycle crank quick release structure according to claim 2, characterized in that: The outer end of the clamping shaft is provided with clamping teeth, which are matched with the linkage shaft sleeve.

4. The bicycle crank quick release structure according to claim 3, characterized in that: A shaft shoulder II is arranged in the middle of the clamping shaft.

5. The bicycle crank quick release structure according to claim 1, characterized in that: It also includes a pedal piece. The pedal piece is arranged on the other side of the crank body away from the end of the clamping shaft. The pedal piece is perpendicular to the crank body and is rotatably connected.

6. The bicycle crank quick release structure according to claim 2, characterized in that: The ejector rod and the bayonet pin are connected by threads.

7. The bicycle crank quick release structure according to claim 2, characterized in that: The elastic member is a spring.

8. A bicycle, characterized in that: The bicycle crank quick-release structure and the linkage sleeve are included in any one of claims 1 to 7, wherein the bicycle crank quick-release structure is buckledly connected to the linkage sleeve.

Images