Connecting structure of front inner mud plate and bottom support and electric bicycle
By adopting a clamping structure between the bottom bracket and the front inner mud plate of the electric bicycle, the problems of reduced battery box capacity and high production costs are solved, and longer driving range and higher assembly efficiency are achieved.
Patent Information
- Application Number
- CN202422063257.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-26
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-08-26
AI Technical Summary
The existing electric bicycle's bottom bracket and front inner mud plate connection structure leads to a decrease in battery box capacity, shortening mileage, and increasing production costs and assembly time.
The clamping structure between the front inner mud plate and the bottom bracket is adopted. Through the design of the first clamping part and the second clamping part, the fixing connection between the front inner mud plate and the bottom bracket is achieved by using the coordination of the clamping part and the through holes, and the fixed connection between the front inner mud plate and the bottom bracket is replaced by the traditional screw connection.
The internal space composed of the bottom bracket and the front inner mud plate is effectively utilized, the pedal thickness is reduced, the battery box is increased, the mileage of the electric bicycle is increased, and the production cost and assembly time are reduced.
Smart Images
Figure CN223001630U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of electric bicycles, in particular to a connection structure between a front inner fender and a bottom bracket of an electric bicycle. Background Art
[0002] With the popularization of electric bicycles in society, electric bicycles have become an important means of transportation for people's short-distance travel.
[0003] Please refer to Figures 1 to 6 , in which, the footrests of some electric bicycles are composed of a bottom bracket 02 and a front inner fender 01, and the bottom and side surfaces of the bottom bracket 02 and the front inner fender 01 are connected by screws through front inner fender mounting posts 03 and bottom bracket mounting holes 04. The battery box of the electric bicycle is placed in the cavity formed by the bottom bracket 02 and the front inner fender 01. Since there needs to be enough safety clearance between the inner side wall of the cavity and the battery box to prevent the inner side walls of the bottom bracket 02 and the front inner fender 01 from rubbing against the battery box during riding, resulting in abnormal noise during riding, and the front inner fender mounting posts 03 and the screws are both installed in the vertical direction, there is a large gap between the bottom of the cavity formed by the bottom bracket 02 and the front inner fender 01 and the battery box. For some models with requirements for the thickness of the footrest, the space between the bottom of the space formed by the bottom bracket 02 and the front inner fender 01 and the battery box cannot be well utilized, and only the volume of the battery box can be reduced, which in turn leads to a decrease in the capacity of the battery box and a decrease in the driving range of the electric vehicle; in terms of cost, the screws used to connect the front inner fender mounting posts 03 and the bottom bracket mounting holes 04 increase the cost, and also increase the assembly time of workers, resulting in a decrease in assembly efficiency. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a connection structure that can make full use of the internal space formed by the bottom bracket and the front inner fender, reduce the thickness of the footrest; at the same time, reduce the production cost and improve the assembly efficiency.
[0005] To achieve the above purpose, the utility model provides the following solution: The utility model discloses a connection structure between a front inner fender and a bottom bracket, including a front inner fender and a bottom bracket. It is characterized in that a first clamping part is arranged on the edge of the side of the front inner fender facing the bottom bracket. A plurality of clamping members are arranged at intervals on the inner side surface of the bottom of the first clamping part. The clamping members extend parallel to the bottom of the front inner fender towards the bottom bracket and protrude from the edge of the front inner fender; a second clamping part is arranged on the edge of the side of the bottom of the bottom bracket facing the front inner fender. The second clamping part includes a first connecting plate and a second connecting plate. The first connecting plate is perpendicular to the inner side surface of the bottom bracket, and one end of the first connecting plate is connected to the bottom bracket, and the other end of the first connecting plate is connected to the second connecting plate. The second connecting plate is parallel to the inner side surface of the bottom bracket and extends towards the front inner fender. A plurality of second through holes are arranged on the side surface of the second clamping part. The second through holes correspond to the clamping members one by one, and the second through holes allow the clamping members to pass through and be clamped with the bottom bracket.
[0006] Further, a third through hole is provided at the top side of the first clamping portion, and a base mounting post corresponding to the third through hole is provided at the position of the top side of the second clamping portion. A screw passes through the third through hole and is screwed into the base mounting post to realize the fixed connection between the front inner fender and the base.
[0007] Further, a first through hole is provided on the upper edge of the clamping member along the direction perpendicular to the inner side surface of the front inner fender; a limiting protrusion is provided on the bottom surface of the base, and the limiting protrusions correspond to the second through holes one by one; the second through hole allows the clamping member to pass through and the limiting protrusion is snapped into the first through hole to realize the connection between the front inner fender and the base.
[0008] Further, the clamping member includes a clamping tongue, the first through hole penetrates through the clamping tongue along the direction perpendicular to the inner side surface of the front inner fender, the first through hole is a clamping hole, the second through hole is a fastening hole, and the clamping tongue on the front inner fender passes through the fastening hole and is clamped with the base.
[0009] Further, the thickness of the first connecting plate is the same as the thickness of the base.
[0010] Further, a guiding inclined surface for facilitating the insertion of the clamping member is provided on the limiting protrusion in the direction towards the front inner fender, and a vertical surface for preventing the clamping member from coming out is provided on the limiting protrusion in the direction away from the front inner fender.
[0011] Further, the clamping members are evenly distributed along the width direction of the front inner fender.
[0012] Another connection structure between a front inner fender and a base, comprising a front inner fender and a base, characterized in that a first clamping portion is provided at the edge of the base on the side facing the front inner fender, and a plurality of clamping members are spacedly provided on the inner side surface of the bottom of the first clamping portion. The clamping members extend in the direction of the front inner fender parallel to the bottom of the base and protrude from the edge of the base; a second clamping portion is provided at the edge of the bottom of the front inner fender close to the base side. The second clamping portion includes a first connecting plate and a second connecting plate. The first connecting plate is perpendicular to the inner side surface of the front inner fender, and one end of the first connecting plate is connected to the front inner fender, and the other end of the first connecting plate is connected to the second connecting plate. The second connecting plate extends parallel to the inner side surface of the front inner fender and in the direction of the base. A plurality of second through holes are provided on the side surface of the second clamping portion, and the second through holes correspond to the connecting members one by one. The second through hole allows the clamping member to pass through and be clamped with the front inner fender.
[0013] An electric bicycle is provided with a front inner fender and a base, and the above connection structure is provided between the front inner fender and the base.
[0014] The utility model has achieved the following technical effects compared with the prior art:
[0015] The utility model respectively sets a first clamping part and a second clamping part on the opposite sides of the bottom bracket and the front inner mudguard. The connection between the bottom bracket and the front inner mudguard is realized through the first clamping part and the second clamping part. And the clamping part in the first clamping part extends forward parallel to the bottom surface of the front inner mudguard or the bottom bracket, and then is inserted into the second through hole in the second clamping part. This effectively reduces the thickness of the connection structure between the bottom bracket and the front inner mudguard, reduces the occupation of the space formed by the bottom bracket and the front inner mudguard by the connection structure, improves the utilization rate of the inner cavity space of the bottom bracket and the front inner mudguard, ensures the thickness of the pedal while increasing the volume of the battery box, and improves the driving range of the electric bicycle. Since the way of buckling is adopted to replace the screw connection, the assembly efficiency between the bottom bracket and the front inner mudguard is increased, and the cost can be reduced at the same time. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0017] Figure 1 FIG. 9 is a schematic three-dimensional structure diagram of the existing front inner mudguard and the bottom bracket;
[0018] Figure 2 FIG. Figure 1 is an enlarged schematic three-dimensional structure diagram of position A in FIG.
[0019] Figure 3 FIG. 19 is a schematic three-dimensional structure diagram of the existing front inner mudguard;
[0020] Figure 4 FIG. Figure 4 is an enlarged schematic three-dimensional structure diagram of the front inner mudguard mounting post at position B in FIG.
[0021] Figure 5 FIG. 29 is a schematic three-dimensional structure diagram of the existing bottom bracket;
[0022] Figure 6 FIG. Figure 5 is an enlarged schematic three-dimensional structure diagram of the bottom bracket mounting hole at position C in FIG.
[0023] Figure 7 FIG. 39 is a schematic three-dimensional structure diagram of the front inner mudguard and the bottom bracket disclosed in Embodiment 1 of the present utility model;
[0024] Figure 8 FIG. Figure 7 is an enlarged diagram of position D in FIG.
[0025] Figure 9 FIG. 49 is a schematic diagram of the three-dimensional structure of the front inner mudguard disclosed in Embodiment 1 of the present utility model;
[0026] Figure 10 For Figure 9 Enlarged schematic view of position E in
[0027] Figure 11 Schematic perspective view of the bottom bracket disclosed in Embodiment 1 of the present utility model;
[0028] Figure 12 For Figure 11 Enlarged schematic view of position G in
[0029] Figure 13 For Figure 11 Enlarged schematic view of position F in
[0030] Explanation of reference numerals:
[0031] Figures 1 to 6 : 01, front inner mudguard; 02, bottom bracket; 03, front inner mudguard mounting post; 04, bottom bracket mounting hole;
[0032] Figures 7 to 13 : 1, front inner mudguard; 10, first clamping portion; 11, clamping member; 12, first through hole; 13, third through hole; 2, bottom bracket; 20, second clamping portion; 201, first connecting plate; 202, second connecting plate; 21, step surface; 22, second through hole; 23, limiting protrusion; 24, bottom bracket mounting post. Detailed implementation manners
[0033] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0034] Embodiment 1
[0035] Refer to Figures 7 to 13The present embodiment provides a connection structure between a front inner mud plate and a bottom bracket, comprising a front inner mud plate 1 and a bottom bracket 2, wherein the front inner mud plate 1 and the bottom bracket 2 form a cavity for accommodating a battery box, and the side of the front inner mud plate 1 and the bottom bracket 2 facing the inside of the cavity is an inner side surface; a first clamping portion 10 is provided on an edge of one side of the front inner mud plate 1 facing the bottom bracket 2, and a plurality of clamping members 11 are provided on the inner side surface of the bottom of the first clamping portion 10, and the clamping members 11 extend toward the direction of the bottom bracket 2 and protrude from the edge of the front inner mud plate 1; a second clamping portion 20 is provided on an edge of the bottom bracket 2 facing the side of the front inner mud plate 1, and the second clamping portion 20 comprises a first connecting plate 201 and a second connecting plate 202, the first connecting plate 201 is provided on the inner side surface of the bottom bracket 2 and is perpendicular to the inner side surface of the bottom bracket 2, the second connecting plate 202 is connected to the first connecting plate 201, the second connecting plate 202 extends toward the direction of the front inner mud plate 1 and is parallel to the inner side surface of the bottom bracket 2, and the second clamping portion 20 A plurality of second through holes 22 are arranged on the top, and the number of the second through holes 22 and the clamping member 11 are the same and the positions correspond one to one. During assembly, the clamping member 11 passes through the second through holes 22 and extends into the interior of the base 2, so that the front inner mud plate 1 is provided with a first clamping portion 10 which is wrapped around the outer side of the second clamping portion 20 of the base 2, and is clamped into the step formed by the first connecting plate 201 and the second connecting plate 202 on the outer side of the base 2, so that the connection between the front inner mud plate 1 and the base 2 can be achieved. The structure is simple, which is convenient for the staff to assemble and improves the assembly efficiency of the front inner mud plate 1 and the base 2. At the same time, the base 2 and the bottom of the front inner mud plate 1 are no longer connected by screws, which further reduces the production cost of the electric bicycle. Since only the first connecting plate 201 occupies part of the space at the bottom of the cavity, the distance between the bottom of the cavity and the bottom of the battery box is reduced, the utilization rate of the space in the cavity is improved, the capacity of the battery box is increased, and the mileage of the electric bicycle is increased.
[0036] A third through hole 13 is provided on the side of the first clamping portion 10 of the front inner mud plate 1, and a base bracket mounting column 24 is provided at a position corresponding to the third through hole 13 of the second clamping portion 20 of the base bracket 2. During the assembly process, after the clamping member 11 is inserted into the second through hole 22, screws are used to pass through the third through hole 13 and connected to the base bracket mounting columns 24 on both sides of the base bracket 2, thereby improving the connection strength between the front inner mud plate 1 and the base bracket 2.
[0037] In order to improve the stability of the connection between the front inner mud plate 1 and the base 2 at the bottom of the first clamping portion 10 and the second clamping portion 20 and avoid separation between the front inner mud plate 1 and the base 2, a first through hole 12 is provided in the clamping member 11 in a direction perpendicular to the inner side surface of the inner mud plate, and a limiting protrusion 23 is provided on the bottom surface of the base 2 near the second through hole 22. After passing through the second through hole 22, the clamping member 11 continues to be pushed toward the base 2 until the edge of the first clamping portion 10 abuts against the step surface 21 in the second clamping portion 20. At this time, the limiting protrusion 23 is clamped into the first through hole 12 to prevent the clamping member 11 from slipping out of the second through hole 22.
[0038] The snap-in part 11 can be selected as a tongue provided with a snap hole. The snap hole penetrates the tongue along the direction perpendicular to the inner side surface of the front inner fender 1. The second through hole 22 can be set as a snap hole, and the snap hole is arranged on the edge where the first connecting plate 201 and the second connecting plate 202 intersect. At this time, the tongue is adjusted to a position at a certain angle with the horizontal plane, which is convenient for the tongue to extend into the snap hole. Then, the front inner fender 1 is restored to the horizontal state, and the limiting protrusion 23 is embedded into the snap hole, so as to realize the connection between the bottom bracket 2 and the front inner fender 1, which is convenient for the staff to assemble and improves the assembly efficiency.
[0039] In the second snap connection part 20, the first connecting plate 201 is arranged on the inner side of the bottom bracket 2 and is perpendicular to the inner side surface of the bottom bracket 2. To improve the space utilization rate in the cavity formed by the front inner fender 1 and the bottom bracket 2, the height of the first connecting plate 201 is the same as the thickness of the front inner fender 1. During the assembly process, after the snap connection between the front inner fender 1 and the bottom bracket 2 is completed, the edge of the first snap connection part 10 of the front inner fender 1 just abuts against the outer side surface of the first connecting plate 201 on the outside of the second snap connection part 20, avoiding the excessive first connecting plate 201 occupying the internal space of the cavity, and at the same time keeping the outer side surfaces of the front inner fender 1 and the bottom bracket 2 flat, so as to avoid rubbing during driving when in use.
[0040] To facilitate the embedding of the limiting protrusion 23 into the snap-in part 11, the limiting protrusion 23 is provided with a guiding inclined surface facing the front inner fender 1. After the snap-in part 11 is inserted into the second through hole 22, the snap-in part 11 moves along the guiding inclined surface towards the top of the limiting protrusion 23, and the snap-in part 11 undergoes elastic deformation until the limiting protrusion 23 completely enters the first through hole 12 provided on the snap-in part 11. A vertical surface perpendicular to the inner side surface of the bottom bracket 2 is provided on the side of the limiting protrusion 23 away from the front inner fender 1. After the snap-in part 11 abuts against the bottom surface of the bottom bracket 2 again, the limiting protrusion 23 restricts the position of the snap-in part 11, improving the connection strength between the bottom bracket 2 and the front inner fender 1 and facilitating the assembly of the staff at the same time.
[0041] The snap-in parts 11 are evenly distributed along the width direction of the front inner fender 1 at the edge of the first snap connection part 10, so that the bottom bracket 2 and the bottom of the front inner fender 1 are stressed evenly, preventing the bottom bracket 2 and the front inner fender 1 from cracking.
[0042] Embodiment 2
[0043] Different from the first embodiment, the positions of the first clamping portion 10 and the second clamping portion 20 are different. Specifically: a first clamping portion 10 is provided at the edge of the bottom tray 2 facing the front inner mudguard 1. A plurality of clamping members 11 are provided at intervals on the inner side surface of the bottom of the first clamping portion 10. The clamping members 11 extend in the direction of the front inner mudguard 1 parallel to the bottom of the bottom tray 2 and protrude from the edge of the bottom tray 2; a second clamping portion 20 is provided at the edge of the bottom of the front inner mudguard 1 close to the bottom tray 2. The second clamping portion 20 includes a first connecting plate 201 and a second connecting plate 202. The first connecting plate 201 is perpendicular to the inner side surface of the front inner mudguard 1, and one end of the first connecting plate 201 is connected to the front inner mudguard 1, and the other end of the first connecting plate 201 is connected to the second connecting plate 202. The second connecting plate 202 extends in the direction of the bottom tray 2 parallel to the inner side surface of the front inner mudguard 1. A plurality of second through holes 22 are provided on the side surface of the second clamping portion 20. The second through holes 22 correspond to the connecting members 11 one by one. The second through holes 22 allow the clamping members 11 to pass through and be clamped with the front inner mudguard 1;
[0044] The positional relationship and connection relationship of the remaining technical features are the same as those in the first embodiment.
[0045] An electric bicycle is provided with a front inner mudguard and a bottom tray, and the above connection structure is provided between the front inner mudguard and the bottom tray.
[0046] In the present utility model, specific examples are used to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.
Claims
1. A connection structure of a front inner mud plate and a bottom bracket, comprising a front inner mud plate (1) and a bottom bracket (2), characterized in that: A first clamping portion (10) is provided at an edge of the front inner mud plate (1) facing the base (2); a plurality of clamping members (11) are arranged at intervals on the inner side surface of the bottom of the first clamping portion (10); the clamping members (11) extend parallel to the bottom of the front inner mud plate in the direction of the base (2) and protrude from the edge of the front inner mud plate (1); a second clamping portion (20) is provided at an edge of the bottom of the base (2) facing the front inner mud plate (1); the second clamping portion (20) comprises a first connecting plate (201) and a second connecting plate (202); the first connecting plate (201) The first connecting plate (201) is perpendicular to the inner side surface of the base (2), one end of the first connecting plate (201) is connected to the base (2), the other end of the first connecting plate (201) is connected to the second connecting plate (202), the second connecting plate (202) is parallel to the inner side surface of the base (2) and extends in the direction of the front inner mud plate (1), a plurality of second through holes (22) are provided on the side surface of the second clamping portion (20), the second through holes (22) correspond to the clamping parts (11) one by one, and the second through holes (22) allow the clamping parts (11) to pass through and be clamped with the base (2).
2. The connection structure between the front inner mud plate and the bottom bracket according to claim 1, characterized in that: A third through hole (13) is provided at the top of the side surface of the first clamping portion (10), and a base mounting column (24) is provided at a position on the top of the side surface of the second clamping portion (20) corresponding to the third through hole (13). A screw passes through the third through hole (13) and is screwed into the base mounting column (24) to achieve a fixed connection between the front inner mud plate (1) and the base (2).
3. The connection structure between the front inner mud plate and the bottom bracket according to claim 1, characterized in that: A first through hole (12) is provided on the clamping member (11) in a direction perpendicular to the inner side surface of the front inner mud plate (1); a limiting protrusion (23) is provided on the bottom surface of the base (2), and the limiting protrusion (23) corresponds to the second through hole (22) one by one; the second through hole (22) allows the clamping member (11) to pass through and clamp the limiting protrusion (23) into the first through hole (12), thereby realizing the connection between the front inner mud plate (1) and the base (2).
4. The connection structure between the front inner mud plate and the bottom bracket according to claim 3, characterized in that: The clamping member (11) comprises a clamping tongue, the first through hole (12) passes through the clamping tongue in a direction perpendicular to the inner side surface of the front inner mud plate (1), the first through hole (12) is a clamping hole, and the second through hole (22) is a buckling hole, and the clamping tongue on the front inner mud plate is clamped with the base after passing through the buckling hole.
5. The connection structure between the front inner mud plate and the bottom bracket according to claim 1, characterized in that: The thickness of the first connecting plate (201) is the same as the thickness of the front inner mud plate (1).
6. The connection structure between the front inner mud plate and the bottom bracket according to claim 3, characterized in that: The limiting protrusion (23) is provided with a guiding inclined surface in the direction toward the front inner mud plate (1) for facilitating the insertion of the clamping member (11), and the limiting protrusion (23) is provided with a vertical surface in the direction away from the front inner mud plate (1) for preventing the clamping member (11) from falling out.
7. The connection structure between the front inner mud plate and the bottom bracket according to claim 1, characterized in that: The clamping parts (11) are evenly distributed along the width direction of the front inner mud plate (1).
8. A connection structure of a front inner mud plate and a bottom bracket, comprising a front inner mud plate (1) and a bottom bracket (2), characterized in that: The edge of the base bracket (2) facing the front inner mud plate (1) is provided with a first clamping portion (10), and a plurality of clamping members (11) are arranged at intervals on the inner side surface of the bottom of the first clamping portion (10), and the clamping members (11) extend in the direction of the front inner mud plate (1) parallel to the bottom of the base bracket (2) and protrude from the edge of the base bracket (2); the edge of the bottom of the front inner mud plate (1) close to the base bracket (2) is provided with a second clamping portion (20), and the second clamping portion (20) comprises a first connecting plate (201) and a second connecting plate (202), and the first connecting plate (201) and the first connecting plate (202) are connected to each other. The inner side surface of the front inner mud plate (1) is vertical, and one end of the first connecting plate (201) is connected to the front inner mud plate (1), and the other end of the first connecting plate (201) is connected to the second connecting plate (202), the second connecting plate (202) is parallel to the inner side surface of the front inner mud plate (1) and extends in the direction of the base (2), and a plurality of second through holes (22) are provided on the side surface of the second clamping portion (20), and the second through holes (22) correspond to the clamping member (11) one by one, and the second through holes (22) allow the clamping member (11) to pass through and be clamped with the front inner mud plate (1).
9. An electric bicycle, provided with a front inner mud plate (1) and a bottom bracket (2), characterized in that: A connection structure according to any one of claims 1 to 8 is provided between the front inner mud plate (1) and the base (2).