TWM521000U

TWM521000U - Truck rim fastening structure

Info

Publication number: TWM521000U
Application number: TW105201865U
Authority: TW
Inventors: Wei-Jin Chen
Original assignee: Alex Global Technology Inc
Priority date: 2016-02-04
Filing date: 2016-02-04
Publication date: 2016-05-01

Description

Card wheel ring locking structure

本創作係有關於一種卡車輪圈鎖固結構，尤指一種利用簡便結構設計，即可使鋁製輪圈適於卡車等大噸重車輛使用之鎖固結構者。This creation relates to a type of wheel wheel lock structure, especially a lock structure that can make aluminum wheels suitable for large tonnage vehicles such as trucks with a simple structural design.

按，現有車輛其車輪與傳動軸主要係透過輪圈進行組裝，乃利用螺帽與螺栓將車輪傳動軸與輪圈鎖接一起後，再將輪胎組裝於輪圈上，依此，當傳動軸轉動時便能驅動車輪轉動，以帶動車輛行進。According to the existing vehicle, the wheel and the transmission shaft are mainly assembled through the rim. After the wheel drive shaft and the rim are locked by the nut and the bolt, the tire is assembled on the rim, and accordingly, the drive shaft When turning, the wheel can be driven to rotate to drive the vehicle.

傳統車輛輪圈主要為鐵製輪圈；然，鐵製輪圈重量較重，因此，車輛行進時須消耗較多能源，另鐵製輪圈散熱效果差，易導致組裝其上之輪胎發生爆胎情況，尤其鐵製輪圈容易生鏽，故現有鐵製輪圈通常會於外部覆蓋一輪圈蓋，以增加車輛美觀性。有鑑於鐵製輪圈使用上諸多缺失，故有業者研發出鋁製輪圈，鋁製輪圈重量輕，可節省車輛行進時耗費能源，另散熱佳，可防止輪胎不當爆胎現象，且鋁製輪圈表面可進行拋光與電鍍等，外型亮麗美觀，不須再附加裝飾用輪圈蓋，因此，現有一般汽車都已普遍採用鋁製輪圈。The traditional vehicle rim is mainly made of iron rims; however, the iron rims are heavier in weight. Therefore, the vehicle must consume more energy when traveling, and the iron rims have poor heat dissipation effect, which easily leads to the explosion of the assembled tires. In the case of tires, especially iron rims are prone to rust, existing iron rims usually cover a wheel cover on the outside to increase the aesthetics of the vehicle. In view of the many defects in the use of iron rims, some manufacturers have developed aluminum rims, which are light in weight, can save energy when the vehicle travels, and have good heat dissipation, which can prevent improper tire puncture and aluminum. The surface of the rim can be polished and plated, and the exterior is bright and beautiful. It is not necessary to add a decorative rim cover. Therefore, aluminum rims have been widely used in existing automobiles.

但現有卡車、聯結車與貨櫃車等大噸重車輛仍採用鐵製輪圈，主因係卡車等大噸重車輛施予車輪輪圈壓力較一般汽車大，於行經顛簸路面等時，輪圈相對承受作用力亦較大，為提高行車安全性，故採用剛性較佳之鐵製輪圈。然，本案創作人將鋁製輪圈組裝於卡車進行實測發現，請參閱第四圖所示，鋁製輪圈（５）主要損壞處係集中於提供螺栓（６）穿設之鎖孔（５１）及供螺帽（７）迫緊之端面等處，主因係鋼製螺栓（６）及螺帽（７）與鋁製輪圈（５）接觸摩擦後，質性較軟的鋁製輪圈（５）其鎖孔（５１）及端面處容易發生擴孔與變形現象，其它部位則無損壞狀況，若可針對鋁製輪圈與螺栓、螺帽等直接接觸部位進行補強，則鋁製輪圈也可適用於卡車等大噸重車輛。However, existing large trucks such as trucks, junction cars and container trucks still use iron rims. The main reason is that trucks and other large-ton vehicles are used to apply wheel rim pressures larger than normal cars. When passing through bumpy roads, the rims are relatively The bearing force is also large. In order to improve the safety of driving, a steel wheel with better rigidity is used. However, the creator of the case assembled the aluminum rim into the truck for actual measurement. Please refer to the fourth figure. The main damage of the aluminum rim (5) is concentrated on the keyhole provided by the bolt (6). ) and the end face of the nut (7), the main reason is that the steel bolt (6) and the nut (7) are in contact with the aluminum rim (5), and the soft aluminum rim (5) The keyhole (51) and the end face are prone to reaming and deformation, and the other parts are not damaged. If the aluminum rim can be reinforced with the direct contact parts such as bolts and nuts, the aluminum wheel The ring can also be applied to large tonnage vehicles such as trucks.

緣是，本創作人有鑑於現有鋁製輪圈有重量輕、省油、散熱性佳及美觀等優點，卻無法提供卡車等車輛使用之缺憾，乃藉其多年於相關領域的製造及設計經驗和知識的輔佐，並經多方巧思，針對現有鋁製輪圈進行研發改良，研創出本創作。The reason is that the creators have the advantages of light weight, fuel economy, good heat dissipation and aesthetics, but they are unable to provide the use of trucks and other vehicles, and they have many years of experience in manufacturing and design in related fields. With the help of knowledge, and through many ingenuity, research and development of the existing aluminum rims, research and development of this creation.

本創作係有關於一種卡車輪圈鎖固結構，其主要目的係為了提供一種以簡便結構設計，即可使鋁製輪圈適於卡車等大噸重車輛使用之鎖固結構者。The present invention relates to a card wheel ring locking structure, the main purpose of which is to provide a locking structure that can be adapted to a large tonnage vehicle such as a truck by a simple structure design.

為了達到上述實施目的，一種卡車輪圈鎖固結構，係主要設有一鋁製輪圈，乃使該輪圈包含有一安裝部及環狀成型於該安裝部周緣之輪框部，且使該安裝部及輪框部共同圍設形成一容置空間，並於該安裝部中心周側設有複數鎖孔，另設有一組立件，該組立件係於中心設有一軸接部，並使該組立件位設於該輪圈其容置空間中，又使該組立件中心周側組設有複數螺栓，且使該複數螺栓對應穿設於該輪圈其安裝部之複數鎖孔，另設有複數螺帽，以分別與各螺栓對應鎖接；其特徵在：In order to achieve the above-mentioned implementation object, a card wheel rim locking structure is mainly provided with an aluminum rim, such that the rim includes a mounting portion and a wheel frame portion formed annularly on the periphery of the mounting portion, and the mounting is performed. The portion and the wheel frame portion are disposed together to form an accommodating space, and a plurality of keyholes are disposed on a central circumferential side of the mounting portion, and a plurality of vertical members are disposed, the set of the vertical members is provided with a shaft joint at the center, and the group is assembled The component is disposed in the accommodating space of the rim, and the plurality of bolts are disposed on the central side of the set of the vertical member, and the plurality of bolts are correspondingly disposed on the plurality of keyholes of the mounting portion of the rim, and a plurality of nuts are respectively locked with the respective bolts; the features are:

又設有複數鐵製襯套，乃使該襯套成型為圓筒狀，並使數襯套分別對應套接於該輪圈其安裝部之各鎖孔中，且使該襯套與該鎖孔呈緊配合配置，又使該螺栓穿設於該襯套其套孔中，另使該襯套長度大於該鎖孔長度，以使該襯套兩端突伸出該鎖孔外，又使該安裝部兩端面於對應各鎖孔處成型有錐型凹坑，且使該襯套兩端翻折形成第一折緣及第二折緣，並使該第一折緣及第二折緣分別對應嵌入該安裝部兩端面之錐型凹坑中，復使該輪圈與組立件及螺帽鎖固定位。Further, a plurality of iron bushings are formed to form the bushing into a cylindrical shape, and the plurality of bushings are respectively sleeved in the respective locking holes of the mounting portion of the rim, and the bushing and the lock are respectively The hole is tightly fitted, and the bolt is inserted into the sleeve hole of the bushing, and the length of the bushing is greater than the length of the locking hole, so that the two ends of the bushing protrude out of the locking hole, and The two ends of the mounting portion are formed with tapered recesses at the corresponding locking holes, and the two ends of the bushing are folded to form a first flange and a second flange, and the first flange and the second flange are separated. Do not fit into the tapered recesses embedded in the end faces of the mounting portion, and make the rim and the assembly and the nut lock fixed.

藉此，當組裝使用時，係將組立件其中心軸接部與卡車等大噸重車輛其車輪傳動軸相鎖接，以使車輪傳動軸經由組立件帶動輪圈轉動，以驅使卡車行進，當卡車等行經顛簸路面時，輪圈與組立件間受震動產生相對運動，而使輪圈與螺栓、螺帽與組立件端面接觸處產生摩擦時，利用該襯套設置，即可使該等接觸摩擦處作用於襯套上，避免質性較軟的鋁製輪圈直接受到螺栓、螺帽與組立件端面等摩擦發生損壞，據此，俾達到使鋁製輪圈適於卡車等大噸重車輛使用效果者。Thereby, when assembled and used, the central shaft joint portion of the assembly member is locked with the wheel drive shaft of the large tonnage vehicle such as a truck, so that the wheel drive shaft drives the wheel to rotate through the assembly member to drive the truck to travel. When the truck or the like passes through the bumpy road surface, the rim and the assembly member are subjected to the relative motion caused by the vibration, and when the rim is in contact with the bolt, the nut and the end surface of the assembly member, the bushing is used to make the same. The contact friction acts on the bushing to prevent the softer aluminum rim from being directly damaged by the friction of the bolt, the nut and the end face of the assembly, and accordingly, the rim is made suitable for the large ton of trucks and the like. Heavy vehicle use effect.

而為令本創作之技術手段及其所能達成之效果，能夠有更完整且清楚的揭露，茲詳細說明如下，請一併參閱揭露之圖式及圖號：In order to make the technical means of this creation and the effect it can achieve, it can be more completely and clearly disclosed. For details, please refer to the following diagrams and drawings:

首先，請參閱第一圖所示，為本創作之卡車輪圈鎖固結構，係主要設有一鋁製輪圈（１），乃使該輪圈（１）包含有一安裝部（１１）及環狀成型於該安裝部（１１）周緣之輪框部（１２），且使該安裝部（１１）及輪框部（１２）共同圍設形成一容置空間（１３），並於該安裝部（１１）中心周側設有複數鎖孔（１４），另設有一組立件（２），該組立件（２）係於中心設有一軸接部（２１），以供與一車輪傳動軸相鎖接，並使該組立件（２）位設於該輪圈（１）其容置空間（１３）中，又使該組立件（２）中心周側組設有複數螺栓（２２），且使該複數螺栓（２２）對應穿設於該輪圈（１）其安裝部（１１）之複數鎖孔（１４），另設有複數螺帽（３），以分別與該複數螺栓（２２）對應鎖接；其特徵在：First of all, please refer to the figure shown in the first figure. The wheel rim locking structure of the present invention is mainly provided with an aluminum rim (1), so that the rim (1) comprises a mounting portion (11) and a ring. The wheel frame portion (12) is formed on the periphery of the mounting portion (11), and the mounting portion (11) and the wheel frame portion (12) are enclosed to form an accommodation space (13), and the mounting portion is formed in the mounting portion (11) A plurality of keyholes (14) are provided on the center side of the center, and a set of vertical members (2) are provided. The set of the vertical members (2) is provided with a shaft joint (21) at the center for a wheel drive shaft. Locking and positioning the set of vertical members (2) in the accommodating space (13) of the rim (1), and further providing a plurality of bolts (22) on the central circumferential side of the set of vertical members (2), and The plurality of bolts (22) are correspondingly threaded through the plurality of keyholes (14) of the mounting portion (11) of the rim (1), and a plurality of nuts (3) are additionally provided to respectively correspond to the plurality of bolts (22) Corresponding lock; its characteristics are:

又設有複數鐵製襯套（４），請一併參閱第三圖所示，乃使該襯套（４）成型為圓筒狀，並使數襯套（４）分別對應套接於該輪圈（１）其安裝部（１１）之各鎖孔（１４）中，且使該襯套（４）與該鎖孔（１４）呈緊配合配置，又使該螺栓（２２）穿設於該襯套（４）其套孔（４１）中，另使該襯套（４）長度大於該鎖孔（１４）長度，以使該襯套（４）兩端突伸出該鎖孔（１４）外，又使該安裝部（１１）兩端面於對應各鎖孔（１４）處成型有錐型凹坑（１５），且使該襯套（４）兩端翻折形成第一折緣（４２）及第二折緣（４３），並使該第一折緣（４２）及第二折緣（４３）分別對應嵌入該安裝部（１１）兩端面之錐型凹坑（１５）中，復使該輪圈（１）與組立件（２）及螺帽（３）鎖固定位。Further, a plurality of iron bushings (4) are provided, as shown in the third figure, so that the bushing (4) is formed into a cylindrical shape, and the plurality of bushings (4) are respectively sleeved to the sleeve. The rim (1) is disposed in each of the locking holes (14) of the mounting portion (11), and the bushing (4) is tightly fitted with the locking hole (14), and the bolt (22) is inserted through the bolt (22) The bushing (4) has a sleeve hole (41), and the bushing (4) has a length greater than the length of the locking hole (14), so that the two ends of the bushing (4) protrude from the locking hole (14). In addition, the two ends of the mounting portion (11) are formed with tapered recesses (15) at the corresponding locking holes (14), and the two ends of the bushing (4) are folded to form a first flange ( 42) and a second flange (43), and the first flange (42) and the second flange (43) are respectively corresponding to the tapered recesses (15) embedded in the end faces of the mounting portion (11), The rim (1) is locked with the assembly member (2) and the nut (3).

復使該螺帽（３）與該第一折緣（４２）形成處抵設定位，另使該組立件（２）端面與該第二折緣（４３）形成處抵設定位。The nut (3) is formed to abut the set position with the first flange (42), and the end surface of the set of the vertical member (2) and the second flange (43) are formed to abut against the set position.

據此，當組裝實施時，請一併參閱第二、三圖所示，係將組立件（２）其中心軸接部（２１）與卡車等大噸重車輛其車輪傳動軸相鎖接，以提供與輪框部（１２）預先裝設有輪胎之鋁製輪圈（１）進行組裝，於輪圈（１）與組立件（２）組裝前，係先將數襯套（４）逐一套入該輪圈（１）其安裝部（１１）之各鎖孔（１４）中，並與鎖孔（１４）形成緊配合之組配，續將襯套（４）其突伸出鎖孔（１４）之兩端，以治具沖壓形成第一折緣（４２）及第二折緣（４３），且使該第一折緣（４２）及第二折緣（４３）對應嵌入安裝部（１１）兩端面之錐型凹坑（１５）中，繼將該組接有襯套（４）之輪圈（１）與組立件（２）相組裝，以使組立件（２）上之複數螺栓（２２）對應穿設於各襯套（４）之套孔（４１）中，並使組立件（２）位於輪圈（１）之容置空間（１３），且使組立件（２）其端面抵靠於安裝部（１１）其一端面定位，續將複數螺帽（３）逐一與穿設於襯套（４）其套孔（４１）中之螺栓（２２）相螺接，並使螺帽（３）迫緊輪圈（１）其安裝部（１１）另一端面處定位，以將輪圈（１）與組立件（２）鎖固結合。Accordingly, when assembling, please refer to the second and third figures together, and the central shaft joint (21) of the assembly (2) is locked with the wheel drive shaft of a large tonnage vehicle such as a truck. The aluminum rim (1) provided with the tires pre-installed with the wheel frame portion (12) is assembled, and before the rim (1) and the assembly member (2) are assembled, the number of bushings (4) are first one by one. Nesting into the lock holes (14) of the mounting portion (11) of the rim (1), and forming a tight fit with the lock hole (14), and continuing to protrude the bushing (4) from the lock hole At both ends of the (14), the first flange (42) and the second flange (43) are formed by stamping, and the first flange (42) and the second flange (43) are correspondingly embedded in the mounting portion. (11) In the tapered recess (15) at both end faces, the rim (1) of the set of bushings (4) is assembled with the assembly (2) so as to be on the assembly (2) The plurality of bolts (22) are correspondingly disposed in the sleeve holes (41) of the bushings (4), and the assembly member (2) is located at the rim (1) The space (13) is accommodated, and the end surface of the assembly member (2) is positioned against one end surface of the mounting portion (11), and the plurality of nuts (3) are continuously threaded and threaded on the sleeve (4). The bolt (22) in the hole (41) is screwed, and the nut (3) is tightened and the rim (1) is positioned at the other end of the mounting portion (11) to fix the rim (1) and the assembly (2) Locking and bonding.

於此，當卡車之車輪傳動軸轉動時，便能透過組立件（２）帶動輪圈（１）及輪胎等轉動，以驅使卡車行進，當卡車等大噸重車輛行經顛簸路面等時，輪圈（１）係會受震動衝擊，而與其組裝之組立件（２）、螺栓（２２）與螺帽（３）等，於裝配處產生相對運動，以致輪圈（１）與組立件（２）、螺栓（２２）與螺帽（３）等接觸處等發生摩擦，此時，利用本創作之襯套（４）設置，即可使輪圈（１）與組立件（２）端面接觸摩擦處，主要作用於襯套（４）之第二折緣（４３）上，又與螺帽（３）接觸摩擦處，主要作用於襯套（４）之第一折緣（４２）上，另與螺栓（２２）接觸摩擦處，則主要作用於襯套（４）之套孔（４１）處，依此，以防止質性較軟的鋁製輪圈（１）直接受到組立件（２）端面、螺栓（２２）與螺帽（３）摩擦而發生擴孔、變形等損壞，如此，即可達到使鋁製輪圈（１）適用於卡車等大噸重車輛使用效果。Here, when the wheel drive shaft of the truck rotates, the rim (1) and the tires can be driven to rotate through the assembly member (2) to drive the truck to travel, when a large tonnage vehicle such as a truck passes through a bumpy road, etc. The ring (1) will be shocked by vibration, and the assembled parts (2), bolts (22) and nuts (3) assembled with it will produce relative movement at the assembly, so that the rim (1) and the assembly (2) ), the bolt (22) and the nut (3) and other contact parts are rubbed. At this time, using the bush (4) of the present invention, the rim (1) can be brought into contact with the end face of the set member (2). Where it acts mainly on the second flange (43) of the bushing (4) and in contact with the nut (3), mainly acting on the first flange (42) of the bushing (4), The contact friction with the bolt (22) mainly acts on the sleeve hole (41) of the bushing (4), thereby preventing the soft aluminum rim (1) from directly receiving the assembly (2) The end face, the bolt (22) and the nut (3) are frictionally reamed Deformation and other damage, thus, can be achieved by making aluminum wheels (1) applicable to trucks and other large vehicles ton effect.

前述之實施例或圖式並非限定本創作之卡車輪圈鎖固結構實施樣態，凡所屬技術領域中具有通常知識者所為之適當變化或修飾，皆應視為不脫離本創作之卡車輪圈鎖固結構專利範疇。The foregoing embodiments or drawings are not intended to limit the implementation of the card wheel rim locking structure of the present invention, and any suitable change or modification of those skilled in the art should be regarded as not departing from the card rim of the present invention. The scope of patents for locking structures.

由上述結構及實施方式可知，本創作係具有如下優點：According to the above structure and implementation, the author has the following advantages:

1.本創作之卡車輪圈鎖固結構係利用一襯套設置，以強化鋁製輪圈與螺栓、螺帽及組立件端面接觸處的結構強度，以使具有重量輕、省油、散熱性佳及美觀性等優點之鋁製輪圈亦可適於卡車等大噸重車輛使用效果。1. The card wheel ring locking structure of the present invention utilizes a bushing arrangement to strengthen the structural strength of the contact between the aluminum wheel and the bolt, the nut and the end face of the assembly, so as to have light weight, fuel economy and heat dissipation. The aluminum rims, which are advantageous in terms of aesthetics, can also be used for large-tonage vehicles such as trucks.

2.本創作之卡車輪圈鎖固結構係藉由一簡便襯套設置，以解決長期以來，鋁製輪圈無法提供卡車等大噸重車輛使用問題，尤其構造簡易利於組裝實施，且不會增加過多成本負擔，可利於大量生產製造者。2. The card wheel ring locking structure of the present invention is solved by a simple bushing to solve the problem that the aluminum rim cannot provide the use of a large tonnage vehicle such as a truck for a long time, and the structure is simple and convenient for assembly and implementation, and will not Increasing the cost burden can be beneficial to mass production manufacturers.

綜上所述，本創作之實施例確能達到所預期功效，又其所揭露之具體構造，不僅未曾見諸於同類產品中，亦未曾公開於申請前，誠已完全符合專利法之規定與要求，爰依法提出新型專利之申請，懇請惠予審查，並賜准專利，則實感德便。In summary, the embodiment of the present creation can achieve the expected effect, and the specific structure disclosed therein has not been seen in the same kind of products, nor has it been disclosed before the application, and has fully complied with the provisions of the Patent Law. It is required that if an application for a new type of patent is filed in accordance with the law, and the application for a patent is granted, the patent will be granted.

＜本創作＞<this creation>

（１）‧‧‧輪圈(1) ‧ ‧ rims

（１１）‧‧‧安裝部(11)‧‧‧Installation Department

（１２）‧‧‧輪框部(12) ‧ ‧ wheel frame

（１３）‧‧‧容置空間(13) ‧‧‧ accommodating space

（１４）‧‧‧鎖孔(14)‧‧‧Keyhole

（１５）‧‧‧凹坑(15) ‧ ‧ pits

（２）‧‧‧組立件(2) ‧ ‧ ‧ set of pieces

（２１）‧‧‧軸接部(21)‧‧‧Axis joint

（２２）‧‧‧螺栓(22)‧‧‧ bolts

（３）‧‧‧螺帽(3)‧‧‧ Nuts

（４）‧‧‧襯套(4)‧‧‧ bushing

（４１）‧‧‧套孔(41) ‧ ‧ set of holes

（４２）‧‧‧第一折緣(42) ‧ ‧ first fold

（４３）‧‧‧第二折緣(43) ‧‧‧second fold

＜現有＞<existing>

（５）‧‧‧輪圈(5) ‧ ‧ rims

（５１）‧‧‧鎖孔(51)‧‧‧Keyhole

（６）‧‧‧螺栓(6) ‧‧‧Bolts

（７）‧‧‧螺帽(7)‧‧‧ Nuts

第一圖：本創作之立體分解圖The first picture: the exploded view of the creation

第二圖：本創作之立體組合圖The second picture: the three-dimensional combination of the creation

第三圖：本創作之局部放大剖視圖The third picture: a partial enlarged cross-sectional view of the creation

第四圖：現有之局部放大剖視圖Figure 4: Partial enlarged cross-sectional view of the existing

(1)‧‧‧輪圈 (1) ‧ ‧ rims

(11)‧‧‧安裝部 (11)‧‧‧Installation Department

(13)‧‧‧容置空間 (13) ‧‧‧ accommodating space

(14)‧‧‧鎖孔 (14)‧‧‧Keyhole

(15)‧‧‧凹坑 (15) ‧ ‧ pits

(2)‧‧‧組立件 (2) ‧ ‧ ‧ set of pieces

(22)‧‧‧螺栓 (22)‧‧‧ bolts

(3)‧‧‧螺帽 (3)‧‧‧ Nuts

(4)‧‧‧襯套 (4)‧‧‧ bushing

(41)‧‧‧套孔 (41) ‧ ‧ set of holes

(42)‧‧‧第一折緣 (42) ‧ ‧ first fold

(43)‧‧‧第二折緣 (43) ‧‧‧second fold

Claims

A card wheel ring locking structure is mainly provided with an aluminum rim, such that the rim includes a mounting portion and a wheel frame portion formed annularly on the periphery of the mounting portion, and the mounting portion and the wheel frame portion are common The housing is provided with an accommodating space, and a plurality of keyholes are disposed on a central circumferential side of the mounting portion, and a plurality of vertical members are disposed. The set of vertical members is provided with a shaft joint at the center, and the set of the vertical members is disposed at the wheel. In the accommodating space of the circle, a plurality of bolts are arranged on the circumferential side of the group of the vertical members, and the plurality of bolts are correspondingly inserted through the plurality of keyholes of the mounting portion of the rim, and a plurality of nuts are respectively provided to respectively Corresponding to each bolt; the feature is as follows: a plurality of iron bushings are further formed, so that the bushing is formed into a cylindrical shape, and the plurality of bushings are respectively sleeved to the locks of the mounting portion of the rim And the bushing is arranged in a tight fit with the locking hole, and the bolt is inserted into the sleeve hole of the bushing, and the bushing length is greater than the length of the locking hole, so that the bushing has two The end protrudes out of the locking hole, and the two end faces of the mounting portion are formed with tapered recesses at corresponding locking holes. And the two ends of the bushing are folded to form a first flange and a second flange, and the first flange and the second flange are respectively corresponding to the tapered recesses embedded in the two end faces of the mounting portion, and the The rim and the assembly and the nut lock are fixed.