CN219295621U - Hub shells, outer rotor hub motors, motorcycles - Google Patents

Hub shells, outer rotor hub motors, motorcycles Download PDF

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CN219295621U
CN219295621U CN202320353641.XU CN202320353641U CN219295621U CN 219295621 U CN219295621 U CN 219295621U CN 202320353641 U CN202320353641 U CN 202320353641U CN 219295621 U CN219295621 U CN 219295621U
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hole
drainage
elastic
hub
outer rotor
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刘经财
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Beijing Didi Infinity Technology and Development Co Ltd
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Beijing Qisheng Technology Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/64Electric machine technologies in electromobility

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Abstract

The application relates to a hub shell, an outer rotor hub motor and an electric bicycle. The hub shell includes: the hub wheel is positioned at the radial outer side of the outer rotor, at least one drainage through hole which is penetrated along the radial direction of the hub wheel is arranged on the hub wheel, and at least one elastic structure is arranged in the drainage through hole; each elastic structure comprises at least one elastic piece, one end of the elastic piece is a fixed end and is connected with the hole wall of the drainage through hole, and the other end of the elastic piece is a free end; the elastic piece is provided with a closed state and an open state, and the form of the elastic structure can cause the drainage through hole to be blocked when the elastic piece is in the closed state; the form of the elastic structure can enable the drainage through hole to circulate when the elastic piece is in an open state. If water enters the outer rotor hub motor, when the outer rotor hub motor operates, the elastic piece is switched from a closed state to an open state under the action of centrifugal force, and the water is discharged from the water discharge through hole. When the outer rotor hub motor stops running, the elastic piece is in a closed state, and the elastic structure can prevent the outer rotor hub motor from water inflow.

Description

轮毂外壳、外转子轮毂电机、电单车Hub shells, outer rotor hub motors, motorcycles

技术领域technical field

本申请涉及轮毂电机技术领域,特别是涉及轮毂外壳、外转子轮毂电机、电单车。The present application relates to the technical field of hub motors, in particular to hub shells, outer rotor hub motors and motorcycles.

背景技术Background technique

共享电单车方便了人们的出行,但因其非用户的个人财产,常会被粗暴对待,受到破损。而且,共享电单车的工作环境通常是在露天停放。在遇到雨水天气或停放在积水地段时,容易发生共享电单车的轮毂电机进水,导致无法使用的情况。Shared motorcycles facilitate people's travel, but because they are not the user's personal property, they are often treated roughly and damaged. Moreover, the working environment of shared motorcycles is usually parked in the open air. In rainy weather or when parked in waterlogged areas, the wheel hub motors of shared motorcycles are prone to water ingress, making them unusable.

发明内容Contents of the invention

基于此,有必要针对现有技术中在遇到雨水天气或停放在积水地段时,容易发生共享电单车的轮毂电机进水,导致无法使用的情况的技术问题,提供一种轮毂外壳、外转子轮毂电机、电单车。Based on this, it is necessary to solve the technical problem in the prior art that the wheel hub motor of the shared motorcycle is prone to water ingress when it encounters rainy weather or is parked in a waterlogged area, making it unusable, and to provide a wheel hub shell, an outer shell Rotor hub motors, motorcycles.

一种轮毂外壳,设置在外转子轮毂电机的外转子的外侧,其特征在于,所述轮毂外壳包括:位于所述外转子的径向外侧的轮毂圈,所述轮毂圈上设有至少一个沿其径向贯通的排水通孔,所述排水通孔内设置有至少一个弹性结构;每个所述弹性结构包括至少一个弹性件,所述弹性件的一端为固定端并与所述排水通孔的孔壁连接,另一端为自由端;所述弹性件具有闭合状态和打开状态,所述弹性件在闭合状态时所述弹性结构的形态能使得所述排水通孔阻塞;所述弹性件在打开状态时所述弹性结构的形态能使得所述排水通孔流通;所述弹性件在受到沿所述轮毂圈的径向向外的作用力时能从闭合状态切换至打开状态;在撤去沿所述轮毂圈的径向向外的作用力时,所述弹性件能通过自身的弹性恢复力而从打开状态切换至闭合状态。A hub shell, which is arranged outside the outer rotor of an outer rotor hub motor, is characterized in that the hub shell includes: a hub ring located radially outside of the outer rotor, and the hub ring is provided with at least one Radially through the drainage through hole, at least one elastic structure is arranged in the drainage through hole; each of the elastic structures includes at least one elastic piece, one end of the elastic piece is a fixed end and connected to the drainage through hole The hole wall is connected, and the other end is a free end; the elastic member has a closed state and an open state, and when the elastic member is in the closed state, the shape of the elastic structure can make the drainage through hole blocked; The shape of the elastic structure in the state can make the drainage through hole circulate; the elastic member can switch from the closed state to the open state when it is subjected to an outward force along the radial direction of the hub ring; When the radially outward force of the hub ring is applied, the elastic member can switch from the open state to the closed state through its own elastic restoring force.

在一实施例中,每个所述弹性结构包括沿所述排水通孔的周向依次排列的至少两个弹性件;所述至少两个弹性件均处于闭合状态时,所述至少两个弹性件的自由端向所述排水通孔的中心合拢,且相邻的所述弹性件之间密封配合;所述至少两个弹性件均从闭合状态切换至打开状态时,所述至少两个弹性件的自由端从所述排水通孔的中心向孔壁方向移位。In one embodiment, each of the elastic structures includes at least two elastic parts arranged in sequence along the circumference of the drainage through hole; when the at least two elastic parts are in a closed state, the at least two elastic parts The free ends of the parts are closed toward the center of the drainage through hole, and the adjacent elastic parts are tightly fitted; when the at least two elastic parts are switched from the closed state to the open state, the at least two elastic parts The free end of the member is displaced from the center of the drain hole toward the wall of the hole.

在一实施例中,所述弹性件在所述闭合状态时,沿所述排水通孔的出水方向,所述弹性件的自由端相比固定端更靠下游。In an embodiment, when the elastic member is in the closed state, the free end of the elastic member is more downstream than the fixed end along the water outlet direction of the drainage through hole.

在一实施例中,沿所述轮毂圈的周向,所述轮毂圈上设有沿其周向间隔排列的多个所述排水通孔,每个所述排水通孔内设置有对应的所述弹性结构。In one embodiment, along the circumferential direction of the hub ring, the hub ring is provided with a plurality of drainage holes arranged at intervals along its circumference, and each of the drainage holes is provided with a corresponding the elastic structure.

在一实施例中,所述的轮毂外壳还包括排水管,所述排水管设置在对应的所述排水通孔内,所述排水管的外壁与所述排水通孔的孔壁密封配合;所述弹性结构设置在对应的所述排水管内,所述弹性件的固定端与所述排水管的内壁连接。In one embodiment, the hub shell further includes a drainage pipe, the drainage pipe is arranged in the corresponding drainage through hole, and the outer wall of the drainage pipe is in sealing fit with the hole wall of the drainage through hole; The elastic structure is arranged in the corresponding drain pipe, and the fixed end of the elastic member is connected with the inner wall of the drain pipe.

在一实施例中,所述弹性结构与所述排水管的材质相同且一体成型。In one embodiment, the material of the elastic structure is the same as that of the drainage pipe and integrally formed.

在一实施例中,所述排水通孔为阶梯孔,包括相连通的第一孔和第二孔,所述第一孔的内径大于所述第二孔的内径,以使所述第一孔的孔壁与所述第二孔的孔壁的连接处形成台阶面,所述排水管设置在所述第一孔内。In one embodiment, the drainage through hole is a stepped hole, including a first hole and a second hole connected to each other, and the inner diameter of the first hole is larger than the inner diameter of the second hole, so that the first hole The junction of the hole wall of the second hole and the hole wall of the second hole forms a stepped surface, and the drain pipe is arranged in the first hole.

在一实施例中,每个所述排水通孔内设置有其轴向依次排列的多个弹性结构。In one embodiment, a plurality of elastic structures arranged in sequence in the axial direction are arranged in each of the drainage through holes.

一种外转子轮毂电机,包括上述任一项所述的轮毂外壳。An outer rotor hub motor, comprising the hub shell described in any one of the above.

一种电单车,包括所述外转子轮毂电机。An electric bicycle includes the outer rotor hub motor.

上述的轮毂外壳、外转子轮毂电机、电单车,由于弹性件的一端为固定端并与排水通孔的孔壁连接,另一端为自由端,因此,弹性件在受到外力作用从而产生弹性形变时,其自由端产生移位,从而能使得弹性结构在打开状态和闭合状态之间切换。若外转子轮毂电机内进水,外转子轮毂电机运行时,轮毂外壳随外转子同步旋转,水在离心力作用下撞击弹性件,使得弹性件受到沿轮毂圈110的径向向外的撞击力,同时在弹性件自身的离心力作用下,弹性件从闭合状态切换至打开状态,从而水从排水通孔排出外转子轮毂电机。外转子轮毂电机停止运行时,弹性件未受到沿轮毂圈的径向向外的作用力,处于闭合状态,从而弹性结构使得外转子轮毂电机内部与外界环境中的水隔离,进而能防止外转子轮毂电机进水。For the aforementioned hub shell, outer rotor hub motor, and motorcycle, since one end of the elastic member is a fixed end connected to the wall of the drainage through hole, and the other end is a free end, when the elastic member is elastically deformed by an external force , the free end of which is displaced, thereby enabling the elastic structure to switch between an open state and a closed state. If water enters the outer rotor hub motor, when the outer rotor hub motor is running, the hub shell rotates synchronously with the outer rotor, and the water hits the elastic member under the action of centrifugal force, so that the elastic member receives an outward impact force along the radial direction of the hub ring 110, At the same time, under the action of the centrifugal force of the elastic member itself, the elastic member switches from the closed state to the open state, so that the water is discharged from the outer rotor hub motor through the drainage hole. When the outer rotor hub motor stops running, the elastic member is not subjected to radially outward force along the hub ring, and is in a closed state, so that the elastic structure isolates the interior of the outer rotor hub motor from the water in the external environment, thereby preventing the outer rotor from Water has entered the hub motor.

附图说明Description of drawings

图1为一实施例的外转子轮毂电机的结构示意图。Fig. 1 is a schematic structural diagram of an outer rotor hub motor according to an embodiment.

图2为一实施例的弹性件在闭合状态时轮毂外壳在排水通孔处的剖视图。Fig. 2 is a cross-sectional view of the hub shell at the drain hole when the elastic member is in a closed state according to an embodiment.

图3为图2中的弹性件在打开状态时轮毂外壳在排水通孔处的剖视图。Fig. 3 is a cross-sectional view of the hub shell at the drain hole when the elastic member in Fig. 2 is in an open state.

图4为一实施例的排水管与弹性结构的连接关系的示意图。Fig. 4 is a schematic diagram of the connection relationship between the drainage pipe and the elastic structure according to an embodiment.

图5为另一实施例的排水管与弹性结构的连接关系的示意图。Fig. 5 is a schematic diagram of the connection relationship between the drain pipe and the elastic structure in another embodiment.

图6为又一实施例的轮毂圈的结构示意图。Fig. 6 is a schematic structural view of a hub ring in yet another embodiment.

附图标号说明:10、外转子轮毂电机;100、轮毂外壳;110、轮毂圈;111、排水通孔;1111、第一孔;1112、第二孔;1113、台阶面;120、弹性结构;121、弹性件;1211、固定端;1212、自由端;130、排水管。Description of reference numerals: 10, outer rotor hub motor; 100, hub shell; 110, hub ring; 111, drainage through hole; 1111, first hole; 1112, second hole; 1113, stepped surface; 120, elastic structure; 121, elastic member; 1211, fixed end; 1212, free end; 130, drainage pipe.

具体实施方式Detailed ways

为使本申请的上述目的、特征和优点能够更加明显易懂,下面结合附图对本申请的具体实施方式做详细的说明。在下面的描述中阐述了很多具体细节以便于充分理解本申请。但是本申请能够以很多不同于在此描述的其它方式来实施,本领域技术人员可以在不违背本申请内涵的情况下做类似改进,因此本申请不受下面公开的具体实施例的限制。In order to make the above-mentioned purpose, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

在本申请的描述中,需要理解的是,若有出现这些术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等,这些术语指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本申请和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本申请的限制。In the description of the present application, it should be understood that if any of these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", " Front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, rather than indicating Or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the application.

此外,若有出现这些术语“第一”、“第二”,这些术语仅用于描述目的,而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此,限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本申请的描述中,若有出现术语“多个”,“多个”的含义是至少两个,例如两个,三个等,除非另有明确具体的限定。In addition, if these terms "first" and "second" appear, these terms are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

在本申请中,除非另有明确的规定和限定,若有出现术语“安装”、“相连”、“连接”、“固定”等,这些术语应做广义理解。例如,可以是固定连接,也可以是可拆卸连接,或成一体;可以是机械连接,也可以是电连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通或两个元件的相互作用关系,除非另有明确的限定。对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本申请中的具体含义。In this application, unless otherwise clearly specified and limited, if any terms such as "mounted", "connected", "connected" and "fixed" appear, these terms should be interpreted in a broad sense. For example, it can be a fixed connection, or a detachable connection, or integrated; it can be a mechanical connection, or it can be an electrical connection; it can be a direct connection or an indirect connection through an intermediary, or it can be the internal communication of two components Or the interaction relationship between two elements, unless expressly defined otherwise. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.

在本申请中,除非另有明确的规定和限定,若有出现第一特征在第二特征“上”或“下”等类似的描述,其含义可以是第一和第二特征直接接触,或第一和第二特征通过中间媒介间接接触。而且,第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方,或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方,或仅仅表示第一特征水平高度小于第二特征。In this application, unless otherwise clearly specified and limited, if there is a similar description that the first feature is "on" or "under" the second feature, the meaning may be that the first and second features are in direct contact, or The first and second features are in indirect contact through an intermediary. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

需要说明的是,若元件被称为“固定于”或“设置于”另一个元件,它可以直接在另一个元件上或者也可以存在居中的元件。若一个元件被认为是“连接”另一个元件,它可以是直接连接到另一个元件或者可能同时存在居中元件。如若存在,本申请所使用的术语“垂直的”、“水平的”、“上”、“下”、“左”、“右”以及类似的表述只是为了说明的目的,并不表示是唯一的实施方式。It should be noted that, if an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or there may be an intervening element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions are used for purposes of illustration only and are not intended to be exclusive implementation.

请参考图1,本申请一实施例提供一种外转子轮毂电机10。外转子轮毂电机10包括轮毂外壳100、外转子(未示出)、内定子(未示出)。外转子和内定子均设置在轮毂外壳100内部。轮毂外壳100与外转子固定连接并随外转子同步旋转。轮毂外壳100可以是下面的实施例中任一项实施例中的轮毂外壳100。Please refer to FIG. 1 , an embodiment of the present application provides an outer rotor hub motor 10 . The outer rotor hub motor 10 includes a hub shell 100, an outer rotor (not shown), and an inner stator (not shown). Both the outer rotor and the inner stator are disposed inside the hub shell 100 . The hub shell 100 is fixedly connected with the outer rotor and rotates synchronously with the outer rotor. The hub shell 100 may be the hub shell 100 in any one of the following embodiments.

请结合图1至图3,本申请一实施例提供一种轮毂外壳100。轮毂外壳100包括位于外转子的径向外侧的轮毂圈110。轮毂圈110上设有至少一个沿其径向贯通的排水通孔111。排水通孔111内设置有至少一个弹性结构120。每个弹性结构120包括至少一个弹性件121,弹性件121的一端为固定端1211并与排水通孔111的孔壁连接,另一端为自由端1212。弹性件121具有闭合状态和打开状态。弹性件121在闭合状态时,弹性结构120的形态能使得排水通孔111阻塞;弹性件121在打开状态时,弹性结构120的形态能使得排水通孔111流通。弹性件121在受到沿轮毂圈110的径向向外的作用力时能从闭合状态切换至打开状态;在撤去沿轮毂圈110的径向向外的作用力时,弹性件121能通过自身的弹性恢复力而从打开状态切换至闭合状态。Please refer to FIG. 1 to FIG. 3 , an embodiment of the present application provides a hub shell 100 . The hub shell 100 includes a hub ring 110 located radially outward of the outer rotor. The hub ring 110 is provided with at least one drainage hole 111 extending radially therethrough. At least one elastic structure 120 is disposed in the drainage through hole 111 . Each elastic structure 120 includes at least one elastic member 121 , one end of the elastic member 121 is a fixed end 1211 connected to the hole wall of the drainage hole 111 , and the other end is a free end 1212 . The elastic member 121 has a closed state and an open state. When the elastic member 121 is in the closed state, the shape of the elastic structure 120 can block the drain hole 111 ; when the elastic member 121 is in the open state, the shape of the elastic structure 120 can make the drain hole 111 flow through. The elastic member 121 can switch from the closed state to the open state when receiving the radially outward force of the hub ring 110; when the radially outward force of the hub ring 110 is removed, the elastic member 121 can elastic recovery force to switch from the open state to the closed state.

上述的轮毂外壳100,由于弹性件121的一端为固定端1211并与排水通孔111的孔壁连接,另一端为自由端1212,因此,弹性件121在受到外力作用从而产生弹性形变时,其自由端1212产生移位,从而能使得弹性结构120在打开状态和闭合状态之间切换。若外转子轮毂电机10内进水,外转子轮毂电机10运行时,轮毂外壳100随外转子同步旋转,水在离心力作用下撞击弹性件121,使得弹性件121受到沿轮毂圈110的径向向外的撞击力,同时在弹性件121自身的离心力作用下,弹性件121从闭合状态切换至打开状态,从而水从排水通孔111排出外转子轮毂电机10。外转子轮毂电机10停止运行时,弹性件121未受到沿轮毂圈110的径向向外的作用力,处于闭合状态,从而弹性结构120使得外转子轮毂电机10内部与外界环境中的水隔离,进而能防止外转子轮毂电机10进水。In the aforementioned hub shell 100, since one end of the elastic member 121 is a fixed end 1211 and is connected to the hole wall of the drainage through hole 111, and the other end is a free end 1212, when the elastic member 121 is elastically deformed by an external force, its The free end 1212 is displaced so that the elastic structure 120 can be switched between an open state and a closed state. If water enters the outer rotor hub motor 10, when the outer rotor hub motor 10 is running, the hub shell 100 rotates synchronously with the outer rotor, and the water hits the elastic member 121 under the action of centrifugal force, so that the elastic member 121 is subjected to a force along the radial direction of the hub ring 110. At the same time, under the action of the centrifugal force of the elastic member 121 itself, the elastic member 121 switches from the closed state to the open state, so that water is discharged from the outer rotor hub motor 10 through the drainage through hole 111 . When the outer rotor hub motor 10 stops running, the elastic member 121 is not subjected to radially outward force along the hub ring 110, and is in a closed state, so that the elastic structure 120 isolates the inside of the outer rotor hub motor 10 from the water in the external environment, Furthermore, water ingress into the outer rotor hub motor 10 can be prevented.

请参考图2至图5,在一些实施例中,每个弹性结构120包括沿排水通孔111的周向依次排列的至少两个弹性件121。每个弹性结构120中弹性件121的数量例如是两个、三个、四个、五个、六个等。Please refer to FIG. 2 to FIG. 5 , in some embodiments, each elastic structure 120 includes at least two elastic members 121 arranged in sequence along the circumferential direction of the drainage through hole 111 . The number of elastic members 121 in each elastic structure 120 is, for example, two, three, four, five, six and so on.

弹性结构120中所述至少两个弹性件121均处于闭合状态时,所述至少两个弹性件121的自由端1212向排水通孔111的中心合拢,且相邻的弹性件121之间密封配合,从而使得排水通孔111阻塞。弹性结构120中所述至少两个弹性件121从闭合状态切换至打开状态时,所述至少两个弹性件121的自由端1212从排水通孔111的中心向孔壁方向移位,从而使得排水通孔111流通。When the at least two elastic members 121 in the elastic structure 120 are in the closed state, the free ends 1212 of the at least two elastic members 121 are closed to the center of the drainage through hole 111, and the adjacent elastic members 121 are tightly fitted , so that the drain hole 111 is blocked. When the at least two elastic members 121 in the elastic structure 120 are switched from the closed state to the open state, the free ends 1212 of the at least two elastic members 121 are displaced from the center of the drainage through hole 111 to the direction of the hole wall, so that the drainage The through hole 111 communicates.

在其他实施例中,弹性结构可以包括一个弹性件。弹性件在闭合状态时,弹性件的自由端与排水通孔的孔壁密封配合,从而能阻塞排水通孔。弹性件从闭合状态切换至打开状态时,其自由端移位,从而弹性件的自由端与排水通孔的孔壁之间产生间隙,使得排水通孔流通。In other embodiments, the elastic structure may include an elastic member. When the elastic member is in the closed state, the free end of the elastic member is in sealing fit with the hole wall of the drainage through hole, so that the drainage through hole can be blocked. When the elastic member is switched from the closed state to the open state, its free end is displaced, so that a gap is created between the free end of the elastic member and the wall of the drainage through hole, allowing the drainage through hole to circulate.

请参考图2至图3,在一些实施例中,弹性件121在闭合状态时,沿排水通孔111的出水方向,弹性件121的自由端1212相比固定端1211更靠下游,即沿轮毂圈110的径向来看,弹性件121的自由端1212相对固定端1211向轮毂圈110的外侧倾斜。如此,外转子轮毂电机10在运行时,水在离心力作用下撞击弹性件121,同时在弹性件121自身的离心力作用下,弹性件121更加容易从闭合状态切换至打开状态,从而水更容易从排水通孔111排出。而且,若外界环境中的水进入排水通孔111内并处于弹性件121的外侧时,外界环境中的水对弹性件121的作用力较小时,会使得所述至少两个弹性件121的自由端1212之间更为聚集(或者使得一个弹性件121与排水通孔111的孔壁之间挤压的更紧),从而使得弹性结构120闭合的更紧,防水效果更好。Please refer to FIG. 2 to FIG. 3 , in some embodiments, when the elastic member 121 is in the closed state, along the water outlet direction of the drainage through hole 111, the free end 1212 of the elastic member 121 is more downstream than the fixed end 1211, that is, along the hub Seen from the radial direction of the ring 110 , the free end 1212 of the elastic member 121 is inclined to the outside of the hub ring 110 relative to the fixed end 1211 . In this way, when the outer rotor hub motor 10 is running, the water hits the elastic member 121 under the centrifugal force, and at the same time, under the centrifugal force of the elastic member 121 itself, the elastic member 121 is more easily switched from the closed state to the open state, so that the water is easier to flow from The drain through hole 111 is discharged. Moreover, if the water in the external environment enters the drainage through hole 111 and is outside the elastic member 121, the water in the external environment has a small force on the elastic member 121, which will make the at least two elastic members 121 free. The ends 1212 are more gathered together (or the squeeze between one elastic member 121 and the wall of the drainage hole 111 is tighter), so that the elastic structure 120 is closed more tightly and the waterproof effect is better.

在其他实施例中,弹性件在闭合状态时,弹性件整体也可以是垂直于排水通孔的孔壁的,同时是垂直于轮毂圈的径向的。如此,外转子轮毂电机在运行时,轮毂外壳内部的水在离心力作用下撞击弹性件,也能使得弹性件从闭合状态切换至打开状态,从而将水排出。In other embodiments, when the elastic member is in the closed state, the entire elastic member may also be perpendicular to the hole wall of the drainage through hole, and at the same time be perpendicular to the radial direction of the hub ring. In this way, when the outer rotor hub motor is running, the water inside the hub shell hits the elastic member under the action of centrifugal force, which can also switch the elastic member from the closed state to the open state, thereby discharging the water.

请参考图1,在一实施例中,轮毂圈110上设有沿其周向间隔排列的多个排水通孔111,每个排水通孔111内设置有对应的弹性结构120。排水通孔111的数量例如是两个、三个等。Please refer to FIG. 1 , in one embodiment, a plurality of drain through holes 111 are arranged at intervals along the circumferential direction of the hub ring 110 , and each drain through hole 111 is provided with a corresponding elastic structure 120 . The number of drain holes 111 is, for example, two, three, and so on.

在其他实施例中,排水通孔的数量也可以是一个。In other embodiments, the number of drainage through holes may also be one.

请参考图2和图3,在一实施例中,轮毂外壳100还包括排水管130。排水管130设置在对应的排水通孔111内,排水管130的外壁与排水通孔111的孔壁密封配合。弹性结构120设置在对应的排水管130内,弹性件121的固定端1211与排水管130的内壁连接,从而弹性件121的固定端1211间接地与排水通孔111的孔壁连接。通过先将弹性结构120设置在对应的排水管130内,再将排水管130设置在对应的排水通孔111内,从而使得弹性结构120间接地设置在对应的排水通孔111,如此可方便弹性结构120的装配。Please refer to FIG. 2 and FIG. 3 , in an embodiment, the hub shell 100 further includes a drain pipe 130 . The drain pipe 130 is disposed in the corresponding drain hole 111 , and the outer wall of the drain pipe 130 is in sealing fit with the wall of the drain hole 111 . The elastic structure 120 is disposed in the corresponding drain pipe 130 , and the fixed end 1211 of the elastic member 121 is connected to the inner wall of the drain pipe 130 , so that the fixed end 1211 of the elastic member 121 is indirectly connected to the wall of the drainage hole 111 . By first setting the elastic structure 120 in the corresponding drainage pipe 130, and then setting the drainage pipe 130 in the corresponding drainage through hole 111, so that the elastic structure 120 is indirectly arranged in the corresponding drainage through hole 111, which can facilitate the flexibility Assembly of structure 120 .

在一实施例中,弹性结构120与排水管130的材质相同且一体成型,例如是硅胶材质等。通过先将弹性结构120与排水管130采用相同的材质一体成型,再将排水管130置入排水通孔111内,方便弹性结构120的装配。In one embodiment, the material of the elastic structure 120 and the drainage pipe 130 is the same and integrally formed, such as silicone material. Firstly, the elastic structure 120 and the drainage pipe 130 are integrally formed with the same material, and then the drainage pipe 130 is placed in the drainage through hole 111 , which facilitates the assembly of the elastic structure 120 .

在一实施例中,排水通孔111可以是圆孔,也可以是方孔等形状。In an embodiment, the drainage through hole 111 may be a round hole, or a square hole or the like.

请参考图4和图5,在一些实施例中,排水管130的形状与排水通孔111对应,可以是圆管,也可以是方管。Please refer to FIG. 4 and FIG. 5 , in some embodiments, the shape of the drainage pipe 130 corresponds to the drainage through hole 111 , and may be a round pipe or a square pipe.

请参考图6,在一些实施例中,排水通孔111为阶梯孔,包括相连通的第一孔1111和第二孔1112。第一孔1111的内径大于第二孔1112的内径,以使第一孔1111的孔壁与第二孔1112的孔壁的连接处形成台阶面1113。排水管130设置在第一孔1111内。如此设计,在安装排水管130时,只需将排水管130从第一孔1111背离第二孔1112的一侧塞入第一孔1111内,台阶面1113即可对排水管130进行限位,防止排水管130从第二孔1112移出,此时,只需要再通胶接等方式对排水管130背离台阶面1113的一侧进行限位即可,方便排水管130的装配,即方便弹性结构120的装配。沿轮毂圈110的径向,第一孔1111可以位于第二孔1112的外侧,也可以位于第二孔1112的内侧。Please refer to FIG. 6 , in some embodiments, the drainage through hole 111 is a stepped hole, including a first hole 1111 and a second hole 1112 that are connected. The inner diameter of the first hole 1111 is larger than the inner diameter of the second hole 1112 , so that the junction of the wall of the first hole 1111 and the wall of the second hole 1112 forms a stepped surface 1113 . The drain pipe 130 is disposed in the first hole 1111 . With this design, when installing the drain pipe 130, it is only necessary to insert the drain pipe 130 into the first hole 1111 from the side of the first hole 1111 facing away from the second hole 1112, and the stepped surface 1113 can limit the position of the drain pipe 130, To prevent the drainage pipe 130 from moving out of the second hole 1112, at this time, it is only necessary to limit the side of the drainage pipe 130 away from the step surface 1113 by means of glue joints, etc., to facilitate the assembly of the drainage pipe 130, that is, to facilitate the elastic structure 120 assembly. Along the radial direction of the hub ring 110 , the first hole 1111 may be located outside the second hole 1112 or inside the second hole 1112 .

请参考图2和图3,在一些实施例中,每个排水通孔111内设置有沿排水通孔111的轴向依次排列的多个弹性结构120,例如两个、三个、四个等。如此,可以通过多个弹性结构120进行层层防水,防水效果更好。Please refer to FIG. 2 and FIG. 3 , in some embodiments, each drainage through hole 111 is provided with a plurality of elastic structures 120 arranged in sequence along the axial direction of the drainage through hole 111 , such as two, three, four, etc. . In this way, multiple elastic structures 120 can be used to waterproof layer by layer, and the waterproof effect is better.

在一实施例中,外转子轮毂电机10内部的易锈蚀器件(例如,定子、铁圈、磁钢等)的表面设置有防水胶,使得这些器件具备防水能力。In one embodiment, waterproof glue is provided on the surface of the rust-prone components (eg, stator, iron ring, magnet, etc.) inside the outer rotor hub motor 10 , so that these components are waterproof.

本申请一实施例还提供一种电单车。电单车包括上述任一实施例中的外转子轮毂电机10。An embodiment of the present application also provides a motorcycle. The motorcycle includes the outer rotor hub motor 10 in any of the above-mentioned embodiments.

以上所述实施例的各技术特征可以进行任意的组合,为使描述简洁,未对上述实施例中的各个技术特征所有可能的组合都进行描述,然而,只要这些技术特征的组合不存在矛盾,都应当认为是本说明书记载的范围。The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

以上所述实施例仅表达了本申请的几种实施方式,其描述较为具体和详细,但并不能因此而理解为对申请专利范围的限制。应当指出的是,对于本领域的普通技术人员来说,在不脱离本申请构思的前提下,还可以做出若干变形和改进,这些都属于本申请的保护范围。因此,本申请专利的保护范围应以所附权利要求为准。The above-mentioned embodiments only express several implementation modes of the present application, and the description thereof is relatively specific and detailed, but should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of protection of the patent application should be based on the appended claims.

Claims (10)

1.一种轮毂外壳,设置在外转子轮毂电机的外转子的外侧,其特征在于,所述轮毂外壳包括:位于所述外转子的径向外侧的轮毂圈,所述轮毂圈上设有至少一个沿其径向贯通的排水通孔,所述排水通孔内设置有至少一个弹性结构;每个所述弹性结构包括至少一个弹性件,所述弹性件的一端为固定端并与所述排水通孔的孔壁连接,另一端为自由端;所述弹性件具有闭合状态和打开状态,所述弹性件在闭合状态时所述弹性结构的形态能使得所述排水通孔阻塞;所述弹性件在打开状态时所述弹性结构的形态能使得所述排水通孔流通;所述弹性件在受到沿所述轮毂圈的径向向外的作用力时能从闭合状态切换至打开状态;在撤去沿所述轮毂圈的径向向外的作用力时,所述弹性件能通过自身的弹性恢复力而从打开状态切换至闭合状态。1. A hub shell, which is arranged on the outer side of the outer rotor of the outer rotor hub motor, characterized in that the hub shell includes: a hub ring located radially outside of the outer rotor, and at least one hub ring is provided on the hub ring The drainage through hole radially penetrates, and at least one elastic structure is arranged in the drainage through hole; each of the elastic structures includes at least one elastic member, and one end of the elastic member is a fixed end and communicates with the drainage The hole wall of the hole is connected, and the other end is a free end; the elastic member has a closed state and an open state, and when the elastic member is in the closed state, the shape of the elastic structure can make the drainage hole blocked; the elastic member In the open state, the shape of the elastic structure can make the drainage through hole communicate; the elastic member can switch from the closed state to the open state when it is subjected to an outward force along the radial direction of the hub ring; When a radially outward force acts on the hub ring, the elastic member can switch from an open state to a closed state through its own elastic restoring force. 2.根据权利要求1所述的轮毂外壳,其特征在于,每个所述弹性结构包括沿所述排水通孔的周向依次排列的至少两个弹性件;所述至少两个弹性件均处于闭合状态时,所述至少两个弹性件的自由端向所述排水通孔的中心合拢,且相邻的所述弹性件之间密封配合;所述至少两个弹性件均从闭合状态切换至打开状态时,所述至少两个弹性件的自由端从所述排水通孔的中心向孔壁方向移位。2. The hub shell according to claim 1, characterized in that, each of the elastic structures comprises at least two elastic pieces arranged in sequence along the circumference of the drainage through hole; the at least two elastic pieces are both in In the closed state, the free ends of the at least two elastic parts are closed to the center of the drainage through hole, and the adjacent elastic parts are tightly fitted; the at least two elastic parts are switched from the closed state to When in an open state, the free ends of the at least two elastic members are displaced from the center of the drainage through hole toward the hole wall. 3.根据权利要求1所述的轮毂外壳,其特征在于,所述弹性件在所述闭合状态时,沿所述排水通孔的出水方向,所述弹性件的自由端相比固定端更靠下游。3. The hub shell according to claim 1, characterized in that, when the elastic member is in the closed state, along the water outlet direction of the drainage through hole, the free end of the elastic member is closer to the fixed end than the fixed end. downstream. 4.根据权利要求1所述的轮毂外壳,其特征在于,沿所述轮毂圈的周向,所述轮毂圈上设有沿其周向间隔排列的多个所述排水通孔,每个所述排水通孔内设置有对应的所述弹性结构。4. The hub shell according to claim 1, characterized in that, along the circumferential direction of the hub ring, the hub ring is provided with a plurality of drainage through holes arranged at intervals along its circumference, each of which The corresponding elastic structure is arranged in the drainage through hole. 5.根据权利要求1所述的轮毂外壳,其特征在于,还包括排水管,所述排水管设置在对应的所述排水通孔内,所述排水管的外壁与所述排水通孔的孔壁密封配合;所述弹性结构设置在对应的所述排水管内,所述弹性件的固定端与所述排水管的内壁连接。5. The hub shell according to claim 1, further comprising a drainage pipe, the drainage pipe is arranged in the corresponding drainage through hole, the outer wall of the drainage pipe is in contact with the hole of the drainage through hole The walls are sealed and fit; the elastic structure is arranged in the corresponding drain pipe, and the fixed end of the elastic member is connected with the inner wall of the drain pipe. 6.根据权利要求5所述的轮毂外壳,其特征在于,所述弹性结构与所述排水管的材质相同且一体成型。6 . The wheel hub shell according to claim 5 , wherein the elastic structure is made of the same material as the drain pipe and integrally formed. 6 . 7.根据权利要求5所述的轮毂外壳,其特征在于,所述排水通孔为阶梯孔,包括相连通的第一孔和第二孔,所述第一孔的内径大于所述第二孔的内径,以使所述第一孔的孔壁与所述第二孔的孔壁的连接处形成台阶面,所述排水管设置在所述第一孔内。7. The hub shell according to claim 5, characterized in that, the drainage through hole is a stepped hole, including a first hole and a second hole that communicate with each other, and the inner diameter of the first hole is larger than that of the second hole The inner diameter of the hole wall of the first hole forms a stepped surface at the junction of the hole wall of the first hole and the hole wall of the second hole, and the drain pipe is arranged in the first hole. 8.根据权利要求1所述的轮毂外壳,其特征在于,每个所述排水通孔内设置有其轴向依次排列的多个弹性结构。8 . The hub shell according to claim 1 , wherein a plurality of elastic structures arranged in sequence in the axial direction are arranged in each of the drainage through holes. 9.一种外转子轮毂电机,其特征在于,包括权利要求1~8中任一项所述的轮毂外壳。9. An outer rotor hub motor, characterized in that it comprises the hub shell according to any one of claims 1-8. 10.一种电单车,其特征在于,包括权利要求9所述的外转子轮毂电机。10. An electric bicycle, characterized in that it comprises the outer rotor hub motor according to claim 9.
CN202320353641.XU 2023-02-20 2023-02-20 Hub shells, outer rotor hub motors, motorcycles Active CN219295621U (en)

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