TWM267095U - Improved structure for stepless gearshift gear box with reverse gear function - Google Patents

Improved structure for stepless gearshift gear box with reverse gear function Download PDF

Info

Publication number
TWM267095U
TWM267095U TW93220297U TW93220297U TWM267095U TW M267095 U TWM267095 U TW M267095U TW 93220297 U TW93220297 U TW 93220297U TW 93220297 U TW93220297 U TW 93220297U TW M267095 U TWM267095 U TW M267095U
Authority
TW
Taiwan
Prior art keywords
gear
speed
output shaft
sprocket
speed change
Prior art date
Application number
TW93220297U
Other languages
Chinese (zh)
Inventor
Ruei-Cheng Jang
Original Assignee
Ruei-Cheng Jang
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ruei-Cheng Jang filed Critical Ruei-Cheng Jang
Priority to TW93220297U priority Critical patent/TWM267095U/en
Publication of TWM267095U publication Critical patent/TWM267095U/en

Links

Landscapes

  • Transmissions By Endless Flexible Members (AREA)
  • Structure Of Transmissions (AREA)

Description

M267095 四、創作說明(l) ' ~ ' " -- 【新型所屬之技術領域] 本創作係主要涉及一種具有倒檔功能之CVT無段變速 引·#的傳動齒輪箱結構創新設計者。 【先前技術】 按如第1圖所示係為一習式機車無段變速引擎之傳動 =12結ΐ平面示意圖,其中引擎動力經CVT無段變速之 後傳遞到间輪箱内設_主動軸1Q,齒輪箱内配合 =2出〇轴3〇等組成,其主動軸10上設有一驅動齒輪η 專動軸20以一攸動齒輪21受驅動齒輪丨丨嚅合帶動又 一減速齒輪22與輸出軸30 —變速齒輪31M267095 IV. Creation Instructions (l) '~' "-[Technical Field to which New Types belong] This creation is mainly related to an innovative designer of the transmission gearbox structure of a CVT stepless variable speed drive with a reverse function. [Previous technology] As shown in Fig. 1, it is a schematic diagram of the transmission of a stepless variable speed engine of a locomotive = 12 knots, in which the engine power is transmitted to the inner wheel box after the CVT stepless speed change._Drive shaft 1Q In the gearbox, it is composed of 2 output shafts and 3 shafts. The driving shaft 10 is provided with a driving gear η, the special moving shaft 20 is driven by a moving gear 21, and a reduction gear 22 is coupled with an output gear. Shaft 30 — gear 31

轴30恆以正轉輸出’提供一種前進樓傳動者。嶋出 又,如公告第578766 核准具倒樓功能的前案中 化’及撥動輪(變速卡盤、 前、退檔或空檔操作者。 、489757 、 M240376 號等鈞局 ’皆係藉由齒輪組帶動正反向變 麦速凸輪軸)配合,達到具切換 【新型内容】 所欲解決的技術課題: 瓜扣币1圆〜不I笞式機車之無段變速齒輪箱口处户 供早一種前進檔傳動之使用功能, ,、月b k 檔之使用功能,因此只能提供做 I v提供倒退 而無法進一步延伸到一也特殊=一般速克達機車使用, 車及休閒沙灘車等之倒車使用:車、辰業用 又,如上“局核准之為2大的缺點。 梠功能使用,惟,該等創作皆 =達到具有倒 】用齒輪組正反向變化帶動The shaft 30 is constantly outputting in a forward direction 'to provide a forward drive. According to the announcement, such as the former case of Sinochem's approval of the No. 578766 approving the downstairs function and the shifting wheel (shift chuck, forward, reverse or neutral operator. No. 489757, M240376, etc.) are borrowed The gear set drives the forward and reverse variable speed camshafts) to achieve switching. [New content] The technical problem to be solved: One round of melon deduction coins ~ The gearbox of the stepless speed change gear for non-I locomotive The previous use function of the forward gear transmission, and the use of the monthly bk gear function, so it can only be provided as I v to provide a retrograde and cannot be further extended to one. It is also special = general speed locomotive use, car and leisure ATV, etc. Reverse use: used for cars and chenye, as above, "the Bureau has approved two major shortcomings. 梠 function use, but these creations = reach to have reverse] driven by positive and negative changes in the gear set

$ 5頁 M267095 四、創作說明(2) ,達成而因此等齒輪組轴數皆較益#鏃、# ♦ 1圖所示之軸數多,/以敬数自权無&,交逮啬輕 導致業者必須另行势1八空間限制下,根本4 -引擎動輒近千萬二‘ ^擎使用,而眾所智 所以如何針對以上習式二卷相對增加業者靠 以倒檔提供特殊用車 "f無段變速齒輪箱淘 ,必須另製引整t使用功忐,而在具有倒檔功 加以改良設計者,是A太劎於放即名杈具1造成 ,. 疋為本創作所欲行解決之困難 本創作之主要目的,係在 變速齒輪箱結構改I可在^ 一種具倒檔功 ,以I认μ & 艮丌在不改變原來引擎安全 以㈣輪的重組而能延伸倒 使用j ,处女a — 彳細功此,^供許多特 解、> 1 θ§^ f效郎省模具開發成本之功效增進者 月午决课題之技術手段: 把冷 為達到上述之目的,,本創作係主要在— 動及一輸出ϊ等組成’其主動軸: _ ^動轴以一從動齒輪受驅動齒輪嚅合帶$ 5 pages of M267095 Fourth, the creation instructions (2), so the number of axes of the gear set is better than that achieved # 镞 、 # ♦ 1 The number of axes shown in the figure is more, In light of this, the industry must be under the control of eighteen spaces, and the engine will be used nearly 4 million times. ^ Engine is used, and how the public knows how to increase the relative volume of the above-mentioned conventional two volumes. The industry provides special vehicles in reverse gear. ; f stepless speed gearboxes must be modified separately. The designer who has improved the reverse gear function is caused by A who is too accustomed to put the name of the fork. 1. 疋 I want it for my creation The main purpose of this creation is to change the structure of the transmission gearbox. I can use the reverse gear function to recognize the μ & that can extend the gear without changing the original engine safety. Use j, virgin a — 彳 meticulously, ^ for many special solutions, > 1 θ§ ^ f The technical means to improve the efficiency of the province ’s mold development cost is to solve the problem at noon: Use cold to achieve the above purpose , This creative department is mainly composed of motion and an output 'and its active axis: _ ^ axis A driven gear engaged with the driven gear softly

一速齒輪與輸出轴一變速齒輪嚅合帶動,傳動 、朱2動鏈輪與輸出軸一變速鏈輪間以一鏈條連楛 輪與變速鏈輪中心各以圓套孔在輸出軸上套 、、'且合’輸出軸以一放射狀鍵槽段與一變速卡 各且’變速卡件兩端等距各凸設帶動凸柱,' 分另 才H散孔及變速鏈輪之嵌槽嵌扣,變速卡件以夕 成i又一撥又嵌入可撥動其在輸出轴鍵槽段來E r箱,如第 法應用’ 知,製造 造成本。 構,無法 能使用時 本的缺點 點所在。 能之無段 上的設什 殊用車之 箱内設一 設有一驅 動,又以 軸上另設 帶動,變 組成空轉 之鍵槽孔 可與變速 ‘徑一環狀 f滑移之組 M267095 四、創作說明(3) 【實施方式】 餘下,茲配合圖式列舉一具體實施例,詳細介紹本創 作之構造内容,及其所能達成之功能效益如后; 如第2 、3圖所示為本創作之立體分解示意圖及平面 組合空槽示意圖’其係主要在一齒輪箱内設一主動軸4 〇、 傳動軸50及一輸出軸60等組成,其中;The first-speed gear is combined with the output shaft and a variable-speed gear. The transmission, Zhu 2 moving sprocket, and the output shaft-variable sprocket are connected by a chain and the center of the variable-speed sprocket with a circular sleeve hole on the output shaft. The output shaft of the "Hehe" uses a radial keyway segment and a transmission card, and "the two ends of the transmission card are equidistantly provided with driving columns." There are separate H-holes and slotted buckles of the variable speed sprocket. The speed-changing clips can be inserted and inserted into the key grooves of the output shaft to form the Er box, as shown in the first method. The disadvantage of this system is that it cannot be used. There is a drive in the box of the special-purpose vehicle on the no-step section, and it is driven by another on the shaft. It becomes an idling key slot, which can slide with the variable speed's ring f ring. M267095 IV. Creation Description (3) [Implementation Mode] The rest, with the help of the drawings, enumerate a specific embodiment to introduce the construction content of this creation in detail, and the functional benefits that can be achieved as follows; as shown in Figures 2 and 3 The created three-dimensional exploded schematic diagram and the planar combined empty groove schematic diagram are mainly composed of a driving shaft 40, a driving shaft 50 and an output shaft 60 in a gear box, among which;

主動車ώ 4 0上设有'驅動齒輪4 1 輪51受驅動齒輪41嚅合帶動,又以一減速齒輪52與輸出輕 60 —變速齒輸61嚙合帶動;傳動軸5〇上另設一傳動鏈輪52 與輸出軸60 —變速鏈輪62間以一鏈條70連接帶動,變速齒 輪61與變速鏈輪62中心各以圓套孔612、621在輪出軸6〇上 套組成空轉之組合,變速齒輪6丨徑面間隔環列數嵌孔6工玉 ,變速鏈輪62於變速齒輪61 一側凸輪上間隔凹設嵌槽 6 22,輸出軸6〇以一放射狀鍵槽段63與一變速卡曰 使變速卡件8〇恰置於變速齒輪。與變速鏈輕 赫艾Ϊ件8〇兩端對應變速齒輪61之嵌孔Μ 1及變速 杜^、之队槽622間隔凸設有數帶動凸柱82、83,速士 μ描以外搜一環狀撥槽84可供一撥叉90嵌入,輪出轴6(1 ^ 鍵槽段63上以兩限位環槽631,各配人一 C型^ 〇The driving vehicle 4 is provided with a 'drive gear 4 1 wheel 51 driven by the coupling of the drive gear 41, and is driven by a reduction gear 52 and an output light 60-speed gear 61 to engage; another transmission is arranged on the transmission shaft 50 A chain 70 is connected between the sprocket 52 and the output shaft 60 to the speed change sprocket 62. The center of the speed change gear 61 and the speed change sprocket 62 are each sleeved on the wheel output shaft 60 with round sleeve holes 612 and 621 to form an idle combination. Speed change gear 6 丨 The diameter of the spaced-apart ring row number 6 holes. The speed change sprocket 62 is recessed with recesses 6 and 22 on the cam of one side of the speed change gear 61. The output shaft 60 uses a radial keyway section 63 and a speed change. Kazakhstan makes the shifting clamping member 80 just fit the shifting gear. Corresponding to the two ends of the gearshift chain light 80, corresponding to the mounting holes M1 and gearboxes 622 of the gearshift gear 61, the number of driving grooves 82 and 83 are convexly arranged at intervals. The dial 84 can be used to insert a fork 90, and the wheel 6 (1 ^ key groove section 63 is provided with two limit ring grooves 631, each of which is equipped with a C-shaped ^ 〇

65之套組,即組合口 &扣64與擋環 所示者。 成無1又踺速之傳動齒輪箱如第3 g 在第3圖中, 從動齒輪51、減速 變速齒輪6 1及變速 主動軸40之驅動齒輪4丨帶動傳動軸5 齒輪52與傳動鏈輪53時,可同+ * 鏈輪62轉動;因之,在變读 ’ 私欠咦卡件8 〇 $The set of 65 is the combination port & buckle 64 and the retaining ring shown. The speedless transmission gearbox is as shown in Figure 3g. In Figure 3, the driven gear 4 of the driven gear 51, the reduction gear 6 1 and the variable speed drive shaft 40 4 drives the transmission shaft 5 gear 52 and the transmission sprocket. At 53:00, it can rotate with + * sprocket 62; therefore, it reads 'Private debt card' 8 〇 $

第7頁 M267095 四、創作說明(4) 撥叉90之撥動,使其位於變速齒輪61及變速鏈輪“間,變 速卡件80兩側帶動凸柱82、83則與變速齒輪61嵌孔61 j及 變速鏈輪62嵌槽622脫離,變速齒輪61及變速鏈輪62形成 空轉,即為切換空檔狀態。 如第4圖所示為本創作前進檔傳動之示意圖,配合第 f圖所示,#圖中箭頭方向當撥叉9G撥動變速卡件8〇以其 ▼動凸柱83嵌入變速齒輪61之嵌孔611卡扣 使, 空轉狀態;因<,在主動軸40之驅動齒輪41 齒輪51反向轉㈣,可藉由-減速齒 輻52與隻速回輪61嚨合,俾變速齒輪61帶動變 出軸60之鍵槽段63帶動輸出軸60,而正 轉傳動輸出為則進檔傳動者。 2 第5 =為本創作後退槽傳動之示意圖,配合第 二Γ二;:Π頭方向當撥叉90撥動變速卡件以其 彳::齒變狀態;因之,在驅動齒^二 條70配ί下!雜之傳動鏈輪53在鏈 6〇呈反轉傳動輪出為』檔傳動时6者2變速卡件8〇及輸出轴 改良上動功能之無段變速齒輪箱結構 來引擎安全上== = :齒輪重組,而能在不改變原 用車之使用上,可省^ ^ ^ 2 提供許多特殊 妗卜所、f ^,略另製引擎模具開發成本者。 、-’…虽知本創作具有產業上利用性與進步性, M267095 四、創作說明(5) 且本創作未見於任何刊物,亦具新穎性,當符合專利法之 規定,爰依法提出新型專利申請,懇請 貴審查委員惠准 專利為禱。 M267095 圖式簡單說明 【圖式簡單說明 第 1 圖 :係 習 式 機 車 之 無 段 變 速 齒 輪 箱結 圖 〇 第 2 圖 係 本 創 作 之 立 體 分 解 圖 〇 第 3 圖 係 本 創 作 之 空 檔 狀 態 之 示 意 圖。 第 4 圖 係 本 創 作 之 前 進 檔 傳 動 示 意 圖。 第 5 圖 係 本 創 作 之 後 退 檔 傳 動 示 意 圖。 【主要元件符號說明】 6 1 1.... I 孑L 65··…擋環 1 0、4 0 · ·…主動轴 1 1、4 1....驅動齒輪 2 0、5 0....傳動軸 2 1、5 1....從動齒輪 30、60....輸出軸 22、52..·.減速齒輪 3 1、6 1....變速齒輪5 3 ....傳動鏈輪 6 2....變速鏈輪 6 3....鍵槽段 6 3 1....限位環槽 6 4 .... C型扣 70....鏈條 80....變速卡件 81,...鍵槽孔 8 2、8 3 ·...帶動凸柱 8 4 ....環狀撥槽 9 0 ·...撥叉 612、621·...圓套孔 622·...嵌槽Page 7 M267095 IV. Creation instructions (4) The shift of the fork 90 is located between the transmission gear 61 and the transmission sprocket. The two sides of the transmission clip 80 drive the protrusions 82 and 83 to engage the transmission gear 61. 61 j and the variable groove sprocket 62 are detached from the slot 622, and the variable gear 61 and the variable gear sprocket 62 are idling, that is, the neutral state is switched. As shown in Figure 4, this is a schematic diagram of the forward transmission of the creation, in conjunction with Figure f. As shown in the figure, the direction of the arrow in the figure is when the shift fork 9G shifts the shifting clamp 80, and its ▼ moving projection 83 is inserted into the recess 611 of the shifting gear 61, and it is idling; because of < driving on the driving shaft 40 Gear 41 gear 51 rotates in the reverse direction, and can be engaged with the speed-only return wheel 61 by-reduction gear spokes 52. The transmission gear 61 drives the key groove section 63 of the output shaft 60 to drive the output shaft 60. The forward rotation output is 2th 5 = This is a schematic diagram of the back-slot transmission of the creation, in conjunction with the second Γ2 ;: Π head direction when the fork 90 toggles the speed change card with its 彳 :: tooth change state; therefore, Under the driving gear ^ two 70's match! Miscellaneous transmission sprocket 53 in the chain 60 is a reverse transmission wheel out as the "gear transmission" 6 people 2 speed change The stepless gear box structure with the clip 80 and the output shaft improved upper movement function to the engine safety == =: Gear reorganization, which can save ^ ^ ^ 2 to provide many special妗 布 所, f ^, slightly different cost of engine mold development., -'... Although it is known that this creation has industrial applicability and progress, M267095 IV. Creation Instructions (5) and this creation has not been seen in any journals, It is novel. When it complies with the provisions of the Patent Law and submits a new patent application in accordance with the law, your reviewers are kindly requested to approve the patent. M267095 Brief description of the drawing Gearbox knot diagram. The second picture is a three-dimensional exploded view of the creation. The third picture is a schematic view of the neutral state of the creation. The fourth picture is a schematic diagram of the transmission gear before the creation. Schematic diagram of transmission. [Description of symbols of main components] 6 1 1 .... I 孑 L 65 ··… Retaining ring 1 0, 4 0 ··… Drive shaft 1 1, 4 1 .... drive gear 2 0, 5 0 .... drive shaft 2 1, 5 1 .... driven gear 30, 60 ... output shaft 22, 52 ..... reduction gear 3 1 , 6 1 .... speed gear 5 3 .... drive sprocket 6 2 .... speed sprocket 6 3 .... key groove section 6 3 1 .... limit ring groove 6 4 .. .. C-shaped buckle 70 .. Chain 80 .. Speed-changing clip 81 .... Key slot hole 8 2, 8 3 · ... Drive the boss 8 4 .... Ring dial 9 0 · ... forks 612, 621 · ... round sleeve holes 622 · ... recessed grooves

第10頁Page 10

Claims (1)

M267095M267095 五、申請專利範圍 1 · 一種具倒檔功能之無段變速齒輪箱結構改良,係主 要在一齒輪箱内設一具有驅動齒輪的主動軸、一具有從動 齒輪的傳動軸,以及一具有變速齒輪的輸出軸,傳動軸以 一減速齒輪與變速齒輪嚅合帶動輸出軸組合者;其特徵在 方欠傳動ί上另設一傳動鏈輪與輸出軸一變速鏈輪間以一 鍵條2 $帶動,變速齒輪及變速鏈輪以圓套孔套組輸出輪 上使常^為空轉狀態,變速齒輪及變速鏈輪之輸出軸上 套、Ό 爽速卡件組成者;俾撥動變速卡件位於變速齒於只 變速鏈輪間,$全與 脫離時,形成空檔 ;二 # i#、卡株I 4 w w Ϊ力V. Scope of patent application1. An improved structure of a stepless speed change gearbox with reverse gear function is mainly provided in a gearbox with a driving shaft with a driving gear, a transmission shaft with a driven gear, and a transmission with speed The output shaft of the gear and the transmission shaft are driven by a combination of a reduction gear and a variable speed gear to drive the output shaft combination; it is characterized in that a transmission sprocket and an output shaft and a variable speed sprocket are arranged on the side of the drive. 2 $ Driven, the speed change gear and speed change sprocket are set to idle state on the output wheel of the round sleeve hole set, the speed change gear and speed change sprocket output shaft cover, 爽 cool speed clip components; 俾 turn the speed change clip It is located between the gear shifting gear and the gear shifting sprocket, and when it is fully and disengaged, it forms a neutral position; the second # i # and the card strain I 4 ww 叶卞扣變速齒輪帶動輸出軸正轉形成進檔狀態;或 撥向人欠逮鏈輪卡扣帶動輸出軸反轉為倒檔狀態,達到直 接=用原無段變速引擎,以變速齒輪重組設計延伸具倒檔 功能’而提供一般特殊用車,如殘障、農業、休閒沙灕^ 車輛具倒檔使用上,可省略另行製造引擎,有效節省模且 製造成本之功效增進者。The sprocket gear of Ye Jiu drives the output shaft to rotate forward to form an upshift state; or the sprocket buckle is driven to reverse the state of the output shaft to reach a direct position = using the original stepless variable speed engine and redesigned extension gears with variable speed gears. Reverse function 'provides general special vehicles, such as handicap, agriculture, and leisure. ^ Vehicles can be used in reverse gear, and it is possible to omit a separate engine, which can effectively save mold and increase manufacturing cost. 2.如申請專利範圍第1項所述之具倒檔功能之無段變 速齒輪箱結構改良,其中,輸出軸以一放射狀鍵槽段與— 支速卡件之鍵槽孔套組,變速卡件兩端分別間隔凸設有帶 動凸柱’而變速齒輪及變速鏈輪對應設有嵌孔及嵌槽,變 速卡件以外徨一環狀撥槽受一撥叉嵌入可撥動其在輸出軸 鍵槽段來回滑移,使對變速齒輪或變速鏈輪卡扣之組成者 、3 ·如申請專利範圍第2項所述之具倒檔功能之無段變 速齒輪箱結構改良,其中,輸出軸之鍵槽段上以兩限位環2. The structure of the stepless speed change gearbox with reverse function as described in item 1 of the scope of the patent application, wherein the output shaft is a radial keyway segment and a keyway hole set of a speed clamp, a speed change clamp The two ends of the gearbox and the gearbox are correspondingly provided with driving holes. The gearshift gear and gearwheel are respectively provided with caulking holes and caulking grooves. A ring-shaped shift groove outside the gear shifting piece is inserted by a fork to dial the key groove on the output shaft. Segments slide back and forth, so that the components of the gears or gear sprockets are buckled. 3. The structure of the gearless gearbox with reverse gear function as described in item 2 of the scope of the patent application is improved, in which the keyway of the output shaft Two limit rings M267095 五、申請專利範圍 槽,各配合一 c型扣與擋環之套組可限位變速卡件之定距 滑移者。 第12頁M267095 5. Scope of patent application Slots, each with a c-shaped buckle and a retaining ring set can limit the fixed-speed sliding of the speed-changing clips. Page 12
TW93220297U 2004-12-16 2004-12-16 Improved structure for stepless gearshift gear box with reverse gear function TWM267095U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW93220297U TWM267095U (en) 2004-12-16 2004-12-16 Improved structure for stepless gearshift gear box with reverse gear function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW93220297U TWM267095U (en) 2004-12-16 2004-12-16 Improved structure for stepless gearshift gear box with reverse gear function

Publications (1)

Publication Number Publication Date
TWM267095U true TWM267095U (en) 2005-06-11

Family

ID=36591904

Family Applications (1)

Application Number Title Priority Date Filing Date
TW93220297U TWM267095U (en) 2004-12-16 2004-12-16 Improved structure for stepless gearshift gear box with reverse gear function

Country Status (1)

Country Link
TW (1) TWM267095U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI471243B (en) * 2012-10-16 2015-02-01 Ind Tech Res Inst Carry apparatus with capability of switching moving direction

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI471243B (en) * 2012-10-16 2015-02-01 Ind Tech Res Inst Carry apparatus with capability of switching moving direction

Similar Documents

Publication Publication Date Title
EP1367296B1 (en) Transmission for vehicle
US6866606B2 (en) Continuously variable transmission system for vehicles
US20080103015A1 (en) Gear train of an automatic transmission for a vehicle
JP2001165250A (en) Vehicular automatic transmission
JP2001173734A (en) Vehicular automatic transmission
JP2005195172A (en) Six-speed power train of automatic transmission for vehicle
JPS58221061A (en) Speed change gear
JP2006329338A (en) Shunt type stepless transmission
EP1391636B1 (en) Power transmission system in vehicle
WO2009031330A1 (en) Automatic gearbox
JP2822527B2 (en) Automatic transmission for vehicles
CN107524763B (en) Speed variator
JPH1030688A (en) Gear speed changer for automatic transmission
JPS58193965A (en) Speed change gear
JP2001056045A (en) Belt type nonstep variable speed gear for vehicle
TWM267095U (en) Improved structure for stepless gearshift gear box with reverse gear function
FR2719355A1 (en) Vehicle transmission with clutch, fluid flywheel and gearbox
JP2009162302A (en) Automatic transmission for vehicle
JP6796634B2 (en) 3-speed transmission for motorcycles
JP2011506883A (en) Transmission structure for a vehicle
JP2012025336A (en) Transmission and shift method used for motor and also for pedaling
JPS63176862A (en) Vehicle transmission
JP5340106B2 (en) Power transmission device for motorcycles
JP2016080108A (en) transmission
JP2016205533A (en) Transmission

Legal Events

Date Code Title Description
MM4K Annulment or lapse of a utility model due to non-payment of fees