Hub structure of electric scooter

Abstract

The utility model relates to the technical field of electric scooter equipment, and provides a hub structure of an electric scooter, which comprises a barrel-shaped supporting piece, the outer wall surface of the supporting piece is embedded in a motor hub, and a motor coil group is assembled on the inner wall surface of the barrel-shaped supporting piece; a plurality of insertion grooves are formed in one end face of the cylindrical supporting piece in the direction perpendicular to the end face, and the insertion grooves are annularly arranged at intervals with the axis of the supporting piece as the center. A tubular connecting piece is assembled in each insertion groove, an internal thread structure is arranged on the inner wall of each tubular connecting piece, an insertion hole is formed in the bottom of each insertion groove, and the insertion holes penetrate out of the other end face of the cylindrical supporting piece; the two ends of the motor hub are respectively provided with a motor cover.

Description

Technical Field

[0001] The utility model relates to the technical field of electric scooter equipment, in particular to a wheel hub structure of an electric scooter. Background Art

[0002] A scooter is a simple means of transportation. It has a moderate speed, is easy to learn and operate, and has a brake device (step on the rear wheel brake). If you just use it for daily commuting or ordinary entertainment, it is generally not easy to fall. Therefore, it is suitable for use by people of all ages, especially among teenagers. An electric skateboard is a four-wheeled vehicle based on a traditional skateboard with an electric kit. Currently, electric skateboards are generally divided into two main drive modes: two-wheel drive and single-wheel drive. The most common transmission modes are hub motors and belt drives, and the main source of power is lithium battery packs. The wheels of a scooter are an important part of the entire scooter.

[0003] The installation between the end caps on both sides of the existing scooter wheel and the wheel hub is achieved by drilling and tapping holes on the central wheel hub. If multiple mounting holes on the central wheel hub are damaged, the end caps cannot be stably mounted on the wheel hub, and the entire wheel hub can only be replaced.

[0004] To this end, we propose a wheel hub structure for an electric scooter. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a wheel hub structure for an electric scooter, wherein a cylindrical support member is provided and a plurality of tubular connecting members are installed on the cylindrical support frame. The end covers at both ends of the motor hub are screwed and fixedly installed with the tubular connecting members by bolts. If the tubular connecting members are damaged, it is convenient to replace the damaged members without replacing the entire wheel hub. At the same time, the tubular connecting members are installed in the cylindrical support members, which can also improve the supporting strength of the cylindrical support members for the motor hub.

[0007] (II) Technical solution

[0008] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] A wheel hub structure for an electric scooter, characterized by comprising:

[0010] The outer wall of the cylindrical support member is embedded in the motor hub, and the motor coil assembly is mounted on the inner wall of the cylindrical support member;

[0011] A plurality of insertion grooves are provided at one end surface of the cylindrical support member in a direction perpendicular to the end surface, and are arranged in an annular manner with the axis of the cylindrical support member as the center; a tubular connector is assembled in each insertion groove, and an internal thread structure is provided on the inner wall of the tubular connector, and an insertion hole is formed at the bottom of each insertion groove, and the insertion hole penetrates the other end surface of the cylindrical support member;

[0012] Motor covers are respectively installed at both ends of the motor hub.

[0013] Preferably, the motor cover is divided into a first motor cover and a second motor cover, the first motor cover is fitted on the end surface of the insertion groove and is installed in the tubular connector extended by bolts, and the second motor cover is fitted on the end surface of the insertion hole and extended by bolts into the insertion hole.

[0014] Preferably, the diameter of the insertion hole is smaller than the diameter of the circumscribed circle of the insertion groove in a cross-sectional state, and larger than the diameter of the internal threaded hole.

[0015] Preferably, an annular rib is extended on the mounting surface of the motor cover along the central axis direction of the motor cover toward the cylindrical support member, and the outer wall surface of the annular rib of the motor cover is interference fit with the inner wall surface of the cylindrical support member.

[0016] Preferably, when the tubular connector is fully inserted, its end surface is exposed and flush with the end surface of the cylindrical support.

[0017] Preferably, the motor hub is hollow, and the inner wall surface of the motor hub extends inwardly to form a second step layer, and the inner end surface of the motor cover abuts against the second step layer.

[0018] Preferably, a first step layer is formed inwardly on the inner wall of the lower half of the insertion groove and is matched with the outer wall surface of the cylindrical support member.

[0019] (III) Beneficial effects

[0020] The embodiment of the utility model provides a wheel hub structure of an electric scooter, which has the following beneficial effects:

[0021] By providing a cylindrical support member and installing a plurality of tubular connecting members on the cylindrical support frame, the end covers at both ends of the motor hub are screwed and fixedly installed with the tubular connecting members by bolts. If the tubular connecting member is damaged, it is also convenient to replace the damaged part without replacing the entire wheel hub. At the same time, the tubular connecting member is installed in the cylindrical support member, which can also improve the supporting strength of the cylindrical support member for the motor hub. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0023] Figure 2This is a three-dimensional schematic diagram of the structure of the hidden first motor cover of the utility model;

[0024] Figure 3 It is a half-cut three-dimensional schematic diagram of the structure of the utility model;

[0025] Figure 4 This is a schematic diagram of the main structure of the utility model;

[0026] Figure 5 This is a schematic diagram of the motor cover of the utility model.

[0027] In the figure:

[0028] Cylindrical support member; 1.1, insertion groove; 1.2, insertion hole;

[0029] Motor hub;

[0030] Tubular connectors;

[0031] Motor cover; 4.1, first motor cover; 4.2, second motor cover;

[0032] First step layer;

[0033] The second step layer. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] Refer to the attached Figure 1-5 A wheel hub structure of an electric scooter includes a cylindrical support member, the outer wall of which is embedded in a motor hub 2, the inner wall of the cylindrical support member 1 is equipped with a motor coil group, and motor covers 4 are bolted to both ends of the motor hub 2.

[0036] A plurality of insertion grooves 1.1 are provided at one end face of the cylindrical support 1 in a direction perpendicular to the end face and are arranged in an annular manner with the axis of the cylindrical support 1 as the center; a tubular connector 3 is assembled in each insertion groove 1.1, and an internal thread structure is provided on the inner wall of the tubular connector 3.

[0037] The cross-sectional shape of the tubular connecting member 3 is a regular polygonal structure.

[0038] A plurality of gaps are provided along the outer circumference of the cylindrical support member 1 to facilitate insertion into the motor hub 2 .

[0039] An insertion hole 1.2 is formed at the bottom of each insertion slot 1.1, and the insertion hole 1.2 passes through the other end surface of the cylindrical support member 1, so as to facilitate the insertion of bolts for fixing the motor cover 4 at the other end surface;

[0040] The motor cover 4 is divided into a first motor cover 4.1 and a second motor cover 4.2. The first motor cover 4.1 is fitted on the end surface of the insertion groove 1.1 and is installed in the tubular connecting member 3 by bolt extension. The second motor cover 4.2 is fitted on the end surface of the insertion hole 1.2 and is extended into the insertion hole 1.2 by bolt extension.

[0041] The lower inner wall of the insertion groove 1.1 is formed with a first step layer 5 inwardly, and is adapted to the outer wall surface of the cylindrical support 1 to ensure an interference fit between the outer wall surface of the cylindrical support 1 and the inner wall surface of the first step layer 5 to prevent loosening when the bolt is screwed in.

[0042] like Figure 3 The diameter of the insertion hole 1.2 is smaller than the diameter of the circumscribed circle of the insertion groove 1.1 in the cross-sectional state and larger than the diameter of the internal threaded hole. When the damaged tubular connector 3 is pulled out for replacement, the tubular connector 3 may be broken and the remaining tubular connector 3 may be left in the insertion groove 1.1. At this time, a screwdriver or a cylindrical tool can be used to enter the groove from the insertion hole 1.2 and contact the end face of the tubular connector 3 close to the insertion hole 1.2 to push the remaining tubular connector 3 out of the insertion groove 1.1.

[0043] The motor hub 2 is hollow, and the inner wall of the motor hub 2 extends inward to form a second step layer 6. The inner end surface of the motor cover 4 abuts against the second step layer 6. The motor cover 4 is fixed to the side of the motor hub 2 by bolts passing through the motor cover 4 and screwing with the tubular connector 3.

[0044] An annular rib extends on the mounting surface of the motor cover 4 along the central axis direction of the motor cover 4 toward the cylindrical support 1, and the outer wall surface of the annular rib of the motor cover 4 is interference fit with the inner wall surface of the cylindrical support 1 to facilitate accurate positioning of the motor cover 4 when installed on the motor hub 2.

[0045] The length of the tubular connector 3 is greater than the depth of the insertion groove 1.1. When the tubular connector 3 is fully inserted, its end face is exposed to the end face of the cylindrical support member 1. When installing the motor cover 4 on the same side, the cylindrical support member 1 can be pressed into the insertion groove 1.1 to prevent the tubular connector 3 from sliding in the groove after the motor cover 4 is installed.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0047] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wheel hub structure for an electric scooter, characterized in that: include: A cylindrical support member (1) has an outer wall surface embedded in a motor hub (2), and a motor coil assembly is mounted on the inner wall surface of the cylindrical support member; A plurality of insertion grooves (1.1) are provided at one end face of the cylindrical support member (1) in a direction perpendicular to the end face and are arranged in an annular manner with the axis of the cylindrical support member (1) as the center; a tubular connector (3) is installed in each insertion groove (1.1), and an internal thread structure is provided on the inner wall of the tubular connector (3); an insertion hole (1.2) is formed at the bottom of each insertion groove (1.1), and the insertion hole (1.2) passes through the other end face of the cylindrical support member (1); Motor covers (4) are respectively installed at both ends of the motor hub (2).

2. The wheel hub structure of an electric scooter according to claim 1, characterized in that: The motor cover (4) is divided into a first motor cover (4.1) and a second motor cover (4.2); the first motor cover (4.1) is fitted on the end surface of the insertion groove (1.1) and is installed in the tubular connecting member (3) by bolt extension; the second motor cover (4.2) is fitted on the end surface of the insertion hole (1.2) and is installed in the insertion hole (1.2) by bolt extension.

3. The wheel hub structure of an electric scooter according to claim 2, characterized in that: The diameter of the insertion hole (1.2) is smaller than the diameter of the circumscribed circle of the insertion groove (1.1) in a cross-sectional state, and is larger than the diameter of the internal threaded hole.

4. The wheel hub structure of an electric scooter according to claim 1, characterized in that: An annular rib is provided on the mounting surface of the motor cover (4) along the central axis direction of the motor cover (4) and extending in the direction of the cylindrical support member (1). The outer wall surface of the annular rib of the motor cover (4) is interference fit with the inner wall surface of the cylindrical support member (1).

5. The wheel hub structure of an electric scooter according to claim 2, characterized in that: When the tubular connecting piece (3) is in a fully inserted state, its end surface is exposed to the end surface of the cylindrical supporting piece (1).

6. The wheel hub structure of an electric scooter according to claim 1, characterized in that: The motor hub (2) is hollow, and the inner wall surface of the motor hub (2) extends inwardly to form a second stepped layer (6), and the inner end surface of the motor cover (4) abuts against the second stepped layer (6).

7. The wheel hub structure of an electric scooter according to claim 5, characterized in that: The inner wall of the lower half of the insertion groove (1.1) is formed with a first step layer (5) inwardly and is adapted to the outer wall surface of the cylindrical support member (1).

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