JPH0288393A - Marine reduction gear - Google Patents

Marine reduction gear

Info

Publication number
JPH0288393A
JPH0288393A JP23919588A JP23919588A JPH0288393A JP H0288393 A JPH0288393 A JP H0288393A JP 23919588 A JP23919588 A JP 23919588A JP 23919588 A JP23919588 A JP 23919588A JP H0288393 A JPH0288393 A JP H0288393A
Authority
JP
Japan
Prior art keywords
legs
case
installing
hull
output shaft
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP23919588A
Other languages
Japanese (ja)
Other versions
JP2686625B2 (en
Inventor
Shuji Shiozaki
修司 塩崎
Yukiyasu Mizuno
水野 幸保
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yanmar Co Ltd
Original Assignee
Yanmar Diesel Engine Co Ltd
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 Yanmar Diesel Engine Co Ltd filed Critical Yanmar Diesel Engine Co Ltd
Priority to JP63239195A priority Critical patent/JP2686625B2/en
Publication of JPH0288393A publication Critical patent/JPH0288393A/en
Application granted granted Critical
Publication of JP2686625B2 publication Critical patent/JP2686625B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • General Details Of Gearings (AREA)
  • Gear Transmission (AREA)

Abstract

PURPOSE:To enable a marine reduction gear to cope with the slimming of a hull for restrain effectively supportably a case from deformation by providing legs for installing the reduction gear on the hull and a reinforcing rib spanning a boss of an output shaft bearing and the legs. CONSTITUTION:A lower case 15 is provided integrally with a pair of front installing legs 14, 14 projecting forward from both left and right corners of front face of a front wall 3 and integrally with rear installing legs 17, 17 projecting backward from both left and right corners of rear face of a rear wall 6. Also, generally triangular reinforcing ribs 19, 19 are formed integrally from the front installing legs 14, 14 toward a bearing boss 18 for supporting an input shaft 4. On the other hand, generally triangular reinforcing ribs 21, 21 are formed integrally from the rear installing legs 17, 17 toward a bearing boss 20 for journalling an output shaft 7 to structurally transmit a longitudinal thrust transmitted to the bearing boss 20 to the installing leg 17 side through the reinforcing ribs 21.

Description

【発明の詳細な説明】 産業上の利用分野 この発明は、舶用減速機であって、特にその船体への据
付足の構造に関するものである。
DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a marine speed reducer, and particularly to the structure of its installation foot on a ship's hull.

従来の技術 第8図で示すように、船舶においては、船体(41)に
据え付けられたエンジン(42)の後部側に減速機(4
3)が連結され、この減速機(43)の出力側に、船体
(41)後方に突出するプロペラ(34)が連結されて
いる。
BACKGROUND ART As shown in FIG. 8, in a ship, a reduction gear (4
3), and a propeller (34) protruding rearward of the hull (41) is connected to the output side of this speed reducer (43).

第7図は、上記減速機(43)の据付構造を示しており
、この減速機(43)のケースの左右両側壁より突出し
て、据付足(46)  (46)が一体に形成されてお
り、これらの据付足(46)  (4G)を、船体(4
1)の据付台(45)  (45)上へ据え付けて、ボ
ルトによって固定されている。
FIG. 7 shows the installation structure of the reducer (43), in which installation feet (46) (46) are integrally formed, protruding from both left and right side walls of the case of the reducer (43). , these installation feet (46) (4G) are attached to the hull (4G).
1) is installed on the installation stand (45) (45) and fixed with bolts.

発明が解決しようとする課題 ところで、近時船舶においてはその高速化に対応させる
ため、船体(41)の横幅を小さくしてスリム化する傾
向にある。しかしながら、前記第7図のように、据付足
(46)  (46)を、減速a(43)本体の左右両
側に突出させた構造においては、据付足分が減速機(4
3)本体の両側に必要となる分だけ、船体(41)の横
幅を小さくすることができず、高速化に対応できないと
いう不都合がある。
Problems to be Solved by the Invention Incidentally, in recent ships, in order to cope with higher speeds, there is a tendency to reduce the width of the hull (41) and make it slimmer. However, as shown in FIG. 7, in a structure in which the installation feet (46) (46) protrude on both the left and right sides of the main body of the reducer a (43), the installation feet are
3) There is a disadvantage that the width of the hull (41) cannot be reduced by the amount required on both sides of the main body, and it is not possible to respond to higher speeds.

また、船体(41)の前進又は後進時におけるプロペラ
スラスト力は、その減速* (43)本体の前部或いは
後部面から、それら前後部面を通じて前記の据付足(4
6)  (46)側に伝達されるが、そのスラスト力の
伝達の間に、減速機(43)本体の前部壁及び後部壁が
変形する戊れがあり、これを防止するため、それらの変
形の虞れのある部分を重厚な補強リブによって補強しな
ければならず、重量が増加する要因となっていた。
In addition, the propeller thrust force when the hull (41) moves forward or backward is decelerated* (43) from the front or rear surface of the main body, and passes through the front and rear surfaces of the installation foot (4).
6) The thrust force is transmitted to the (46) side, but during the transmission of the thrust force, there is a possibility that the front and rear walls of the reducer (43) body are deformed. Parts where there is a risk of deformation must be reinforced with thick reinforcing ribs, which causes an increase in weight.

この発明は、このような従来の欠点を解消して、船体の
スリム化に対応することのできる減速機の据付構造を提
供し、併せてプロペラスラスト力によるケースの変形を
抑え有効に支持できるようにした舶用減速機を提供する
ものである。
The present invention eliminates these conventional drawbacks and provides a reduction gear installation structure that can accommodate the slimming of the ship's hull, and also provides effective support while suppressing deformation of the case due to propeller thrust force. The present invention provides a marine speed reducer with the following features.

課題を解決するための手段 そして、上記の目的を達成するため、この発明では、減
速機ケースの船体前後方向の前・後部面より突出して船
体への据付足を設けるとともに、少なくともプロペラス
ラスト力を受ける面側の出力軸軸受のボス部と据付足と
に跨って補強リプを設けたことを特徴とする。
Means for Solving the Problems And in order to achieve the above object, the present invention provides installation feet to the hull that protrude from the front and rear surfaces of the reduction gear case in the longitudinal direction of the hull, and at least the propeller thrust force. It is characterized in that a reinforcing lip is provided spanning the boss part of the output shaft bearing on the receiving surface side and the installation foot.

作  用 据付足が減速機ケースの前後部面より突出して設けられ
ているため、横幅が小さくなり、船体のスリム化に充分
対応できる。そして、この据付足と軸受ボス部とに跨っ
て補強リプを設けることで、軸受ボス部に作用するスラ
スト力を据付足側へ速やかに伝達し、ケース各部の変形
を防止することができる。
Since the operational installation feet are provided to protrude from the front and rear surfaces of the reducer case, the width is reduced, making it suitable for slimming the hull. By providing a reinforcing lip across the installation foot and the bearing boss, the thrust force acting on the bearing boss can be quickly transmitted to the installation foot, thereby preventing deformation of each part of the case.

実施例 第2図は、プロペラスラストを出力軸後部軸受で支持す
る減速機のケースを上下方向の面で切断した縦断面を示
しており、減速機ケース(1)内の中間壁(2)と前部
壁(3)との間に、入力軸(4)が軸支されている。こ
の入力軸(4)には、入力歯車(5)が取り付けられて
いる。同じく中間壁(2)と後部壁(6)との間に、出
力軸(7)が軸支され、この出力軸(7)に出力大歯車
(8)が取り付けられている。上記入力軸(4)及び出
力軸(7)の上方には、クラッチ軸(8)が軸支、され
、このクラッチ軸(13)の後半部分に曲嵌した小歯車
(9)と、前記の出力大歯車(8)が咬合している。 
 (10)は、クラッチ軸(13) (II)前半部に
外嵌したクラッチハウジングであり、このクラッチハウ
ジング〈10)外周の入力被動歯車(11)と前記の入
力歯車(5)が咬合しクラッチハウジング(10)と小
歯車(9)との間に、クラッチ仕組(12)がvt備さ
れている。なお、減速逆転機として使用する場合には、
このクラッチ軸(8)の側方には後進用のクラッチ軸が
軸支され、入力軸(4)の動力を前進時と逆転して、前
記出力大歯車(8)側に伝達するようになっているが、
その構造はここでは省略する。
Embodiment Figure 2 shows a vertical section of the case of a reducer in which the propeller thrust is supported by the rear bearing of the output shaft, cut along the vertical plane. An input shaft (4) is pivotally supported between the front wall (3) and the front wall (3). An input gear (5) is attached to this input shaft (4). Similarly, an output shaft (7) is pivotally supported between the intermediate wall (2) and the rear wall (6), and an output large gear (8) is attached to this output shaft (7). A clutch shaft (8) is supported above the input shaft (4) and the output shaft (7), and a small gear (9) fitted in the rear half of the clutch shaft (13) and a small gear (9) The output large gear (8) is engaged.
(10) is a clutch housing that is fitted onto the front half of the clutch shaft (13) (II), and the input driven gear (11) on the outer periphery of this clutch housing (10) and the input gear (5) engage with each other to form a clutch. A clutch mechanism (12) is provided between the housing (10) and the pinion (9). In addition, when using it as a reduction/reversing machine,
A clutch shaft for reverse movement is pivotally supported on the side of this clutch shaft (8), and the power of the input shaft (4) is transmitted to the output large gear (8) in the opposite direction to that for forward movement. Although,
Its structure is omitted here.

上記減速機ケース(1)は、人力軸(4)及び出力軸(
7)の軸芯で上下に二分割されており、第1図では、下
部ケース(15)より下側の部分を、上面から見た場合
の構造を示している。そして、この下部ケース(15)
には、前壁部(3)の前部面における左右両コーナ一部
より前方に突出して、一対の前部据付足(14)  (
14)が一体に突設され、同じく、後壁部(6)の後部
面における左右両コーナ一部より後方に突出して、後部
据付足(17)(17)が一体に形成されている。前部
据付足(14)  (14)から、入力軸(4)を支持
する軸受ボス(18)へ向けて、概略三角形状の補強リ
プ(19)(19)が一体に形成されている。他方、後
部据付足(17)  (17)から出力軸(7)を軸支
する軸受ボス(20)へ向けて、同様に概略三角形状の
補強リプ(21)  (21)が一体に形成されて、該
軸受ボス(20)に伝達される前後方向のスラスト力が
、この補強リプ(21)を介して据付足(17)側に、
速やかに伝達される構造としである。第4図は、船体(
22)への据付状態を後方から見た場合であり、後部据
付足(17)  (17)が、ボルト(24)  (2
4)によって、船体(22)の据付面(23)  (2
3)へ固定されている。なお、クラッチ軸(13)を入
力部とする異芯構造の減速逆転機等に於いては、プロペ
ラスラスト力を主として出力軸(7)の前部側軸受で支
持する場合、或いは前後部軸受双方で支持する場合があ
るが、何れの場合でも、スラスト力支持側面に対して同
様の構造が形成できる。
The reducer case (1) has a human power shaft (4) and an output shaft (
7), and FIG. 1 shows the structure of the lower part of the lower case (15) when viewed from above. And this lower case (15)
A pair of front installation feet (14) protrudes forward from a portion of both left and right corners of the front surface of the front wall (3).
14) are integrally provided, and similarly, rear installation feet (17) (17) are integrally formed so as to protrude rearward from a portion of both left and right corners of the rear surface of the rear wall portion (6). Generally triangular reinforcing lips (19) (19) are integrally formed from the front installation foot (14) (14) toward the bearing boss (18) that supports the input shaft (4). On the other hand, substantially triangular reinforcing lips (21) (21) are similarly integrally formed from the rear installation feet (17) (17) toward the bearing boss (20) that pivotally supports the output shaft (7). , the longitudinal thrust force transmitted to the bearing boss (20) is transmitted to the installation foot (17) side via this reinforcing lip (21),
This is a structure that can be transmitted quickly. Figure 4 shows the hull (
22) as seen from the rear, the rear installation feet (17) (17) are attached to the bolts (24) (2).
4), the installation surface (23) of the hull (22) (2
3) is fixed. In addition, in a reduction/reversing machine with a different core structure in which the clutch shaft (13) is the input part, when the propeller thrust force is mainly supported by the front side bearing of the output shaft (7), or when both the front and rear bearings are supported. In either case, a similar structure can be formed on the thrust force supporting side surface.

第4図において、(25)はクラッチ或いは各潤滑部へ
油を供給するためのオイルポンプであって、このオイル
ポンプ(25)が、減速機ケース(1)における上部ケ
ースの後部面に取り付けられている。そして、減速機ケ
ースく1)内に溜められたオイルを減速機ケース(1)
の後部壁(6)に形成した上下方向の袖穴(26)によ
って吸い上げるようにしている。この場合、この上下方
向の袖穴(26)は、前記出力軸(7)の軸受ボス(2
0)との関係から、その左右方向の中央部に設けること
は不可能で、その軸受ボス(6)を避けて左右の一方へ
偏うて形成する必要がある。そうすると、第4図でも示
すように、減速機ケース(1)の底面が逆台形状に細く
なっていることから、そのケース(1)内の潤滑油溜り
の底部近くにその吸い込み口を開口することができない
不都合を生ずる。
In FIG. 4, (25) is an oil pump for supplying oil to the clutch or each lubricating part, and this oil pump (25) is attached to the rear surface of the upper case of the reducer case (1). ing. Then, pour the oil accumulated in the reducer case (1) into the reducer case (1).
The water is sucked up through vertical sleeve holes (26) formed in the rear wall (6). In this case, the vertical armhole (26) is the bearing boss (2) of the output shaft (7).
0), it is impossible to provide it in the center in the left-right direction, and it is necessary to avoid the bearing boss (6) and form it biased to one of the left and right sides. Then, as shown in Figure 4, since the bottom surface of the reducer case (1) is tapered into an inverted trapezoidal shape, the suction port will be opened near the bottom of the lubricating oil reservoir in the case (1). This causes the inconvenience of being unable to do so.

そこで、この例では、第5図及び第6図で示すように、
鋳造時に、前記袖穴(26)の下部を拡大するような開
口状空所(27)を形成し、この空所(27)に前記袖
穴(26)を連通させるとともに、更にこの空所(27
)の底部より前記潤滑油溜り側に向けて吸い込み口(2
8)を形成したものである。
Therefore, in this example, as shown in FIGS. 5 and 6,
During casting, an open cavity (27) is formed to enlarge the lower part of the armhole (26), and the armhole (26) is communicated with this cavity (27). 27
) from the bottom of the suction port (2) toward the lubricating oil reservoir side.
8).

空所(27)は、そのケース後部面側の開口部が、蓋(
29)によって覆われる。これにより、吸い込み口(2
8)をケースの底部で、しかも、第4図で示すように船
体左右方向の中央側に寄せて設けることができる。また
、空所(27)が形成されていることにより、鋳造時の
前記吸い込み口(28)及び袖穴(26)の形成も容易
となる。
The empty space (27) has an opening on the rear side of the case that is connected to the lid (
29). This allows the suction port (2
8) can be provided at the bottom of the case, closer to the center in the left-right direction of the hull, as shown in FIG. Furthermore, since the cavity (27) is formed, the suction port (28) and armhole (26) can be easily formed during casting.

次に、この減速機を可変ピッチプロペラ式船舶に使用す
る場合について説明すると、第4図において、入力被動
歯車(11)の側面には中間駆動歯車(30)が一体に
設けられる。可変ピッチプロペラにおいては、プロペラ
の変節によって前後進の切換を行なうが、通常において
は、入力軸(4)から入力された動力は、入力被動歯車
(11) 、クラッチ仕組(12) 、小歯車(9)、
出力大歯車(8)及び出力軸(7)の順に伝達され、そ
の他の歯車は取付けられていない、このとき、人力軸(
4)と出力軸(7)は同方向に回転する。しかし、船舶
によっては入力軸(4)と出力軸(7)を互いに逆回転
させる逆回転仕様のものがあり、このままではそれに対
応できないことになる。そこで、この例では、正回転仕
様の場合には、使用しない中間駆動歯車(30)を予め
取付けておき、逆回転仕様の場合には、第4図のように
、その側方に、中間駆動歯車(30)に噛合する中間被
動歯車(3)と、出力大歯車(8)に噛合する第2の小
歯車(32)を装備して、同一の減速機(ケースを含む
)を兼用して逆回転仕様に対応させるようにしている。
Next, the case where this reducer is used in a variable pitch propeller type ship will be described. In FIG. 4, an intermediate drive gear (30) is integrally provided on the side surface of the input driven gear (11). In a variable pitch propeller, the forward and backward movement is performed by the displacement of the propeller, but normally, the power input from the input shaft (4) is transmitted through the input driven gear (11), the clutch mechanism (12), and the pinion ( 9),
The output is transmitted in the order of the large output gear (8) and the output shaft (7), and the other gears are not attached. At this time, the human power shaft (
4) and the output shaft (7) rotate in the same direction. However, some ships have a reverse rotation specification in which the input shaft (4) and the output shaft (7) rotate in opposite directions, and this cannot be used as is. Therefore, in this example, in the case of the forward rotation specification, the intermediate drive gear (30) that is not used is installed in advance, and in the case of the reverse rotation specification, the intermediate drive gear (30) is installed on the side as shown in Fig. 4. Equipped with an intermediate driven gear (3) that meshes with the gear (30) and a second small gear (32) that meshes with the large output gear (8), the same reduction gear (including the case) can be used. We are trying to make it compatible with reverse rotation specifications.

発明の効果 以上のように、この発明によれば、船体への据付足を、
減速機ケースの前後部面より前後方向に突出して形成し
ていることから、従来の側方に突出させたものに比較し
て横幅がそれだけ小さくなり、船体の幅をスリム化して
、高速化に対応することが可能となったものである。し
かも、このように据付足を前後部面より突出して設け、
その据付足とスラスト力が主に作用する側の軸受ボス部
とに跨って補強リブを設けていることから、その軸受ボ
ス部に作用するプロペラスラスト力を、据付足側へ速や
かに伝達することができ、側方に据付足を設けた従来の
ものに比較して、・ケース前後部面の変形が少なく、補
強リブ自身も薄肉のもので済むことから、減速機ケース
の重量をそれだけ軽減できるという効果がある。
As described above, according to this invention, the installation foot on the ship's hull can be
Since it is formed so as to protrude in the longitudinal direction from the front and rear surfaces of the reducer case, the width is correspondingly smaller compared to the conventional one that protrudes from the side, making the width of the hull slimmer and increasing speed. This made it possible to respond. Moreover, the installation feet are provided so as to protrude from the front and rear surfaces,
Since a reinforcing rib is provided across the installation foot and the bearing boss on the side where thrust force mainly acts, the propeller thrust force acting on the bearing boss can be quickly transmitted to the installation foot side. Compared to conventional models with installation feet on the sides, there is less deformation of the front and rear surfaces of the case, and the reinforcing ribs themselves can be made thinner, so the weight of the reducer case can be reduced accordingly. There is an effect.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は、この発明の実施例を示す下部ケースを平面方
向から見た要部横断平面図、第2図は、減速機ケースを
垂直方向の面で切断した縦断面図、第3図は、減速機ケ
ースの要部を後方から見た斜視図、第4図は、同じく減
速機ケースの据付状態を示す後面図、第5図は、減速機
ケースの後部面における空所を塞ぐ蓋の取外し状態を示
す正面図、第6図は、同じく空所部分の縦断面図、第7
図は、従来の減速機の据付構造を示す平面図、第8図は
、この種の減速機を備えた船体の概略平面図である。 (1)・・・減速機ケース、 (3)・・・減速機ケース前部壁、 (6)・・・減速機ケース後部壁、 (7)・・・出力軸、(14)・・・前部掘付足、(1
7)・・・後部据付足、(18)  (20)・・・軸
受ボス、・・・補強リブ。 特 許出願人 ヤンマーディーゼル株式会社
FIG. 1 is a cross-sectional plan view of the main parts of a lower case showing an embodiment of the present invention as seen from the plane, FIG. 2 is a vertical cross-sectional view of the reducer case taken along a vertical plane, and FIG. , a perspective view of the main parts of the reducer case seen from the rear, FIG. 4 is a rear view showing the installed state of the reducer case, and FIG. Fig. 6 is a front view showing the removed state, and Fig. 7 is a vertical sectional view of the empty space.
The figure is a plan view showing the installation structure of a conventional speed reducer, and FIG. 8 is a schematic plan view of a ship body equipped with this type of speed reducer. (1)... Reduction gear case, (3)... Front wall of reducer case, (6)... Rear wall of reducer case, (7)... Output shaft, (14)... Front digging foot, (1
7)...Rear installation foot, (18) (20)...Bearing boss,...Reinforcement rib. Patent applicant Yanmar Diesel Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] 減速機ケースの船体前後方向の前・後部面より突出して
船体への据付足を設けるとともに、少なくともプロペラ
スラストを受ける面側の出力軸軸受ボス部と据付足とに
跨って補強リブを設けたことを特徴とする舶用減速機。
In addition to providing installation feet to the hull that protrude from the front and rear surfaces of the reducer case in the longitudinal direction of the ship, reinforcing ribs are provided that span at least the output shaft bearing boss portion and the installation feet on the side that receives propeller thrust. A marine speed reducer featuring:
JP63239195A 1988-09-24 1988-09-24 Marine speed reducer Expired - Fee Related JP2686625B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63239195A JP2686625B2 (en) 1988-09-24 1988-09-24 Marine speed reducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63239195A JP2686625B2 (en) 1988-09-24 1988-09-24 Marine speed reducer

Publications (2)

Publication Number Publication Date
JPH0288393A true JPH0288393A (en) 1990-03-28
JP2686625B2 JP2686625B2 (en) 1997-12-08

Family

ID=17041137

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63239195A Expired - Fee Related JP2686625B2 (en) 1988-09-24 1988-09-24 Marine speed reducer

Country Status (1)

Country Link
JP (1) JP2686625B2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52156876U (en) * 1976-05-24 1977-11-29

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52156876U (en) * 1976-05-24 1977-11-29

Also Published As

Publication number Publication date
JP2686625B2 (en) 1997-12-08

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