Fishline guide arrangement for spinning reel

Abstract: In a spinning reel for fishing, a fishline guide roller (7₁) is rotatably supported on one of bail support arms (4) pivotably mounted on a rotor (3). The guide roller (7₁) has such a flattened shape that a ratio of an axial length (L) of the roller relative to a diameter (D) thereof falls within 10-40%, and is formed with such a narrow fishline guide groove (71a) that a ratio of an axial length of the fishline guide groove (l) relative to an axial length (L) of the roller falls within 5-35%. It is possible to make a fishline guide roller small in weight and size and restrict axial motion of a fishline along the guide roller.

Description: BACKGROUND OF THE INVENTION The present invention relates to a fishline guide arrangement for a spinning reel, which is designed to prevent the entanglement of a fishline during fishing. The present invention also relates to an improved line roller for the arrangement. A conventional spinning reel for fishing, as shown in Fig. 23, includes a semi-annular bail 411 mounted on the leading ends of a pair of bail support arms 403 through pivotable bail arms 405, so that the bail 411 can be reversibly positioned on a fishline winding side for winding a fishline onto a spool 417 and a fishline playing-out side for freely playing-out the fishline off the spool 417. A fishline guide roller 409 is rotatably mounted on a shaft portion 407a of a line slider 407, and the line slider 407 thus equipped with the fishline guide roller 409 is fixed to one of the bail arms 405, so that the guide roller 409 can guide the fishline when the rotor 401 is rotated in a direction indicated by an arrow A with a manual handle 415 after the bail 405 has been positioned to the fishline winding side. However, when the rotor 401 is rotated in the fishline winding direction A for winding the fishline onto the spool 417, the fishline 419 is likely to move in a direction (indicated by an arrow B) opposite to the winding direction A along the guide roller 409 as shown in Fig. 40. This axial movement of the fishline 419 on the guide roller 409 causes twists in the fishline 419. Further, the conventional guide roller 409 has a drum shaped surface as shown in Figs. 24 and 25, and the friction between the curved surface of the guide roller 409 and the fishline 419 is greater on the larger diameter portion of the guide roller 409 than it is on the smaller diameter portion thereof. Thus, when the fishline 419 is axially moved in the direction B as shown in Fig. 40 during winding of the fishline 419, the guide roller 409 having the drum shaped surface also produces twists in the fishline 419 in the same direction. Moreover, during the casting of the conventional spinning reel, the fishline 419 is played-out off the spool 417 in a spiral manner, and such spiral delivery of the fishline 419 causes twists in the fishline 419 in the same direction. Therefore, the repetition of the playing-out and winding of the fishline 419 during fishing accumulates twists in the fishline 419, which may results in the fishline 419 becoming tangled or broken. A fishline guide arrangement as mentioned in the preamble of claim 1 is shown in US-A-2,728,534. SUMMARY OF THE INVENTION An object of the present invention is to overcome the aforementioned disadvantage found in conventional fishline guide arrangements for a spinning reel. Accordingly, an object of the present invention is to provide a fishline guide arrangement for a spinning reel which eliminates the accumulation of twists in a fishline by restricting an axial movement of the fishline on a fishline guide roller. Preferably the fishline guide arrangement for a spinning reel should allow to guide a fishline while positively producing twists in an opposite direction to twists produced in the fishline being played-out off the spool. Moreover, the fishline guide arrangement should preferably allow the fishline to be prevented from becoming tangled in a fishline guide roller guiding the fishline onto a spool during winding of the fishline. In order to attain the above-noted objective the present invention provides a fishline guide arrangement for guiding a fishline having the features contained in the characterising portion of claim 1. Preferably, the annular groove is formed with a conical bottom surface to positively produce twists in the fishline in the desired direction. A conical surface may be provided in the vicinity of the annular groove so as to guide the fishline to fall within the annular groove. A conical surface may be provided within the annular groove itself so as to guide the fishline to the bottom surface of the annular groove. In this case, an angle between the conical surface and the bottom surface should be set so as to prohibit the fishline from ascending up along the conical surface during winding of the fishline. The annular groove may be designed to have an asymmetrical shape in section in accordance with characteristic of axial movement of fishline depending on a kind of fishline, an axial position where the annular groove is provided in the guide roller. Preferred embodiments of the present invention are laid down in the further subclaims. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a partially sectional, side view showing a spinning reel for fishing provided with a fishline guide arrangement according to a first embodiment of the present invention. Fig. 2 is a sectional view showing main portions of the first embodiment. Fig. 2A is a sectional view showing a modification of the first embodiment. Fig. 3 is a sectional view of a fishline guide roller provided in the first embodiment. Fig. 4 is a sectional view of a fishline guide roller provided for another modification of the first embodiment. Fig. 5 is a sectional view of a fishline guide roller provided for a second embodiment of the present invention. Fig. 6 is a sectional view of a fishline guide roller provided for a modification of the second embodiment. Fig. 7 is a sectional view of a fishline guide roller provided for a third embodiment of the present invention. Fig. 8 is a sectional view of a fishline guide roller provided for a modification of the third embodiment. Fig. 9 is a sectional view of a fishline guide roller provided for a fourth embodiment of the invention. Fig. 10 is a sectional view of a fishline guide roller provided for a modification of the fourth embodiment. Fig. 11 is a sectional view of a fishline guide roller provided for a fifth embodiment of the invention. Fig. 12 is a sectional view of a fishline guide roller provided for a modification of the fifth embodiment. Fig. 13 is a sectional view of a fishline guide roller provided for a sixth embodiment of the invention. Fig. 14 is a sectional view of a fishline guide roller provided for a modification of the sixth embodiment. Fig. 15 is a sectional view of a fishline guide roller provided for a seventh embodiment of the invention. Fig. 16 is a sectional view of a fishline guide roller provided for a modification of the seventh embodiment. Fig. 17 is a sectional view of a fishline guide roller provided for an eighth embodiment of the invention. Fig. 18 is a sectional view of a fishline guide roller provided for a modification of an eighth embodiment. Fig. 19 is a sectional view of main portions of a ninth embodiment of the invention. Fig. 20 is an exploded, sectional view of the main portions of the ninth embodiment. Fig. 21 is a sectional view of main portions of a tenth embodiment. Fig. 22 is an exploded, sectional view of the main portions of the tenth embodiment. Fig. 23 is a side view of a conventional spinning reel for fishing. Fig. 24 is a partially sectional view showing a fishline guide arrangement provided in the spinning reel shown in Fig. 23. Fig. 25 is an explanatory view showing a state where a fishline is moved axially on a fishline guide roller during winding of the fishline. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Now, description will be given below in detail of the embodiments of a spinning reel for fishing with reference to the accompanying drawings. Fig. 1 shows the whole of a spinning reel for fishing equipped with a line roller according to a first embodiment of the invention. As shown in Fig. 1, the spinning reel for fishing includes a spool 2 disposed in the front portion of a reel main body 1 in such a manner that it can be moved back and forth, a rotor 3 rotatable along the outer periphery of the spool 2 with a distance between them, a pair of bail support arms 4 (in Fig. 1, only one bail support arm 4 is shown, while the other bail support arm is disposed at a symmetrical position), two bail support members 5 respectively mounted on the leading ends of the two bail support arms 4 (in Fig. 1, there is shown one bail support member 5 swingably supported on one bail support arm 4, while the other bail support member is similarly supported swingably on the other bail support arm), a bail 6 provided across the two bail support elements 5, a fishline guide portion 7 provided on one bail support member 5, and a handle H which can be operated to rotate the rotor 3 and to move the spool 2 back and forth. Here, a mechanism for moving the spool 2 back and forth and a mechanism for rotating the rotor 3 are not limited to special mechanisms, but are structured in various ways similarly to the conventional spinning reel for fishing. The fishline guide portion 7, as shown in Figs. 1 and 2, includes a line roller 71 rotatably supported on the bail support member 5 through a bearing 8, and a line slider 73 for guiding the fishline to a fishline guide groove 71a formed in the line roller 71 when the take-up operation of the fishline is started. The line roller 71 used in the spinning reel according to the first embodiment of the invention, as shown in Figs. 1 - 3, is formed into a relatively flattened disc having an outer width dimension (an axial length) smaller in comparison to the diameter thereof, and includes a bearing support portion 8 in the central portion thereof. The line roller 71 is formed of hard material such as various kinds of ceramics, metal material or the like. For reference, line rollers in the respective embodiments to be described later are similarly formed of such hard material. As described above, the line roller 71 has such a flattened shape that the outer width dimension thereof is small relative to the diameter thereof, and preferably the outer width dimension L of the line roller 71 is set so as to be approx. 10 - 40% of the diameter D thereof. Here, in the present embodiment, there is mounted in the line roller 71 the bearing 8 such as a ball bearing or the like for smooth rotation of the line roller. If the diametrical dimension of the line roller 71 is decreased, then the bearing cannot be mounted into the line roller 71, thereby worsening the winding efficiency of the line roller 71. Also, if the outer width dimension L is set large, then the line roller 71 becomes large in size and the rotation balance of the rotor 3 in the take-up operation is worsened due to the increased imbalance amount thereof, thereby worsening the operationability of the line roller 71. Therefore, in the present embodiment, the diameter of the line roller 71 is set as such a dimension that allows the bearing 8 to be mounted in the line roller 71, and the outer width dimension L of the line roller 71 is set small so that the line roller 71 is reduced in size and weight. As a result of this, the fishline guide portion 7 can be reduced in size and weight as a whole due to the reduced size and weight of the line roller 71. This can improve the rotation balance of the rotor and thus the operationability of the spinning reel for fishing in the play-out and take-up operations of the fishline. Also, in the present invention, the groove width dimension l of the annular fishline guide groove 71a, which is formed continuously on the outer periphery of the line roller 71, is set for approx. 5 - 35% of the outer width dimension L thereof. By setting the groove width dimension l small in this manner, the fishline passing on the fishline guide surface 71a of the line roller 71 is prevented from moving in the groove width direction, which can stabilize the moving path of the fishline to thereby reduce the production of a line twist in the fishline when the fishline is taken up. This can stabilize the winding condition of the fishline around the spool to thereby reduce the occurrence of troubles such as fishline cutting and the like. Also, the stabilized line moving path can control the production of the fishline twining around the bail support member and the like. In the above description, the rate of the groove width dimension l with respect to the outer width dimension L is set for approx. 5 - 35%. However, this is a preferred rate and the invention is not limited to this. Of course, the rate of the groove width dimension l also includes values which are approximate to the above preferred rate. Further, in the above description, the groove width dimension l of the fishline guide groove 71a is set as a ratio with respect to the outer width dimension L of the line roller 71. This is because the outer width dimension of the line roller 71 is determined to some degree in an ordinary spinning reel for fishing. Also, this way of setting is selected in order to set small the groove width dimension 1 of the fishline guide groove 71a. Therefore, when the outer width dimension L of the line roller 71 is set large, the groove width l of the fishline guide groove 71a must be determined in accordance with the diameter of the fishline used regardless of the outer width dimension L. That is, according to the invention, the groove width dimension l of the fishline guide groove 71a may be set for such a dimension that prevents the fishline from moving greatly in the groove width direction of the fishline guide groove. In addition, the first embodiment may be modified such that an annular projection 5P of the bail support member 5 and an annular projection 73P of the line slider 73 extended axially up to the fishline guide groove 71a formed in the line roller 71 as shown in Fig. 2A. In this modification, inclined outer peripheral surfaces of the annular projections 5P and 73P are located in the vicinity of the fishline guide groove 71a and serve as fishline guide surfaces which guide the fishline to fall within the fishline guide groove 71a. Now, Fig. 4 is a side section view of a line roller 100 employed in a modification of the above-mentioned first embodiment. In this modification, the wall surface 100b of the line roller 100 for defining a fishline guide groove 100a is set at right angles to the axis of the line roller 100. And, a fishline guide surface 100c forming the bottom surface of the fishline guide groove 100a is formed in such a tapered shape that it is gradually increased in diameter toward the take-up rotation direction of the rotor. The taper angle of the fishline guide surface 100c can be set in the range of 1° - 10°. However, the taper angle is to be set properly at the stage of design in accordance with the size of the reel used and is not limited to the above range. Also, in the present modification, the outer peripheral surface of the line roller 100 is formed by such inclined surfaces 100d that respectively slant downward from the two sides of the line roller 100 toward the fishline guide groove 100a, while the inclined surfaces 100d are used to guide the fishline to the fishline guide groove 100a. Now, Fig. 5 is a side section view of a line roller 101 employed in a second embodiment of a spinning reel for fishing according to the invention. In the line roller 101, the fishline guide surface 101b of a fishline guide groove 101a is formed parallel to the axis of the line roller 101. The fishline guide groove 101a is defined by two mutually opposing wall surfaces 101c and also, in the respective peripheral edge portions of the two wall surfaces 101c, there are formed annular guide portions 101d which project into the fishline guide groove 101a. When the fishline is taken up, the mutually opposing peripheral edge portions of the guide portions 101d are contacted with the fishline to thereby regulate the motion of the fishline so as to be able to always hold the fishline at the substantially central position (including the central position) of the fishline guide surface 101b. In the illustrated embodiment, as shown by hatching extending in different directions, parts which respectively form the right and left side wall portions of the line roller are formed separately from each other and the two separate parts are threadedly fitted with each other and are thereby connected into a united body. The reason why the two parts are molded separately and are then connected together is to facilitate the molding of the parts, because the guide portions 101d are formed so as to project toward the fishline guide groove 101a. Of course, the two parts can also be connected together by pressure insertion, welding, adhesives or the like. Now, Fig. 6 is a side section view of a line roller 102 employed in a modification of the second embodiment. In the present modification as well, the fishline guide groove 102a is defined by two mutually opposing wall surfaces 102c and also, in the respective peripheral edge portions of the two wall surfaces 102c, there are formed annular guide portions 102d which project into the fishline guide groove 102a. Also, in the present modification, the fishline guide surface 102b is formed in such a tapered shape that it is gradually increased in diameter toward the take-up rotation direction of the rotor. Further, in the modification of the second embodiment, three parts or members which are respectively used to form the right and left wall surfaces and fishline guide surface 102b of the line roller are molded separately from one another and, after then, as shown in Fig. 6, the three parts are then threadedly fitted with one another to form a united body. Here, of course, the three parts can also be connected by pressure insertion, welding, adhesives or the like. Now, Fig. 7 is a side section view of a line roller 103 employed in a third embodiment of a spinning reel for fishing according to the invention. In the third embodiment, the line roller 103 includes a fishline guide groove 103a which is defined by two side wall portions 103c and 103d. The wall surface of one side wall portion 103c is formed straight from a fishline guide surface 103b to the peripheral end thereof, whereas the other side wall portion 103d includes a guide portion 103e which is formed so as to project into the fishline guide groove 103a. Also, in the third embodiment, the fishline guide surface 103b is formed parallel to the axis of the line roller 103. Further, in the present embodiment as well, as shown by different hatching in Fig. 7, the fishline guide surface 103b and one side wall portion 103c are formed of a common member, while the common member is connected integrally with the other side wall portion 103d by adhesion or by pressure insertion. Next, Fig. 8 is a side section view of a line roller 104 employed in a modification of the third embodiment of a spinning reel for fishing according to the invention. In the present modification, a fishline guide surface 104b is formed in such a tapered shape that it is gradually increased in diameter toward the take-up rotation direction of the rotor. In the present modification, in Fig. 8, the whole line roller is shown in such a manner that it is formed as a united body. However, of course, similarly to the third embodiment, two or more divisional parts may be molded separately from one another and, after then, they may be connected together into a united body. Now, Fig. 9 is a side section view of a line roller 105 employed in a fourth embodiment of a spinning reel for fishing according to the invention. In the forth embodiment, the line roller 105 includes a fishline guide groove 105a which is defined by two side wall portions 105c and 105d. The side wall portion 105c is located on the side of the fishline take-up rotation direction of the rotor and is larger in diameter than the other side wall portion 105c which is located opposed to the side wall portion 105c. On the respective outer peripheries of the two side wall portions 105c and 105d, there are formed guide portions 105e and 105f which respectively project into the fishline guide groove 105a. In the present embodiment as well, as shown by different hatching in Fig. 9, a fishline guide surface 105b and one side wall portion 105c are formed of a common member, while the common member and the other side wall portion 105d are connected together into a united body by adhesion or by pressure insertion. Next, Fig. 10 is a side section view of a line roller 106 employed in a modification of the fourth embodiment. In the present modification of the fourth embodiment, the line roller 106 includes a fishline guide surface 106b which is formed in such a tapered shape that it is gradually increased in diameter toward the take-up rotation direction of the rotor. In the present modification as well, as shown by different hatching, the three members that are used to form the right and left side walls 106c, 106d and fishline guide surface 106b of the line roller 106 are molded separately from one another and, after then, as shown in Fig. 10, they are connected together into a united body by means of threaded fitting. However, in this case as well, of course, the three members can also be connected together by pressure insertion, welding, adhesives or the like. Also, in the present modification as well, similarly to the fourth embodiment shown in Fig. 9, one side wall portion and the portion forming the fishline guide surface 106b may be previously formed as an integral body and, after then, the integral body may be connected together to the other side wall portion. Now, Fig. 11 is a side section view of a line roller 107 employed in a fifth embodiment of a spinning reel for fishing according to the invention. In the fifth embodiment, the line roller 107 includes a fishline guide groove 107a which is defined by two side wall portions 107c and 107d. Similarly to the fourth embodiment, one side wall portion 107c, which is located on the take-up rotation side of the rotor, is formed larger in diameter than the other side wall portion 107d which is disposed opposed to the side wall portion 107c. On the respective outer peripheries of the two side wall portions 107c and 107d, there are provided guide portions 107e and 107f which respectively project into the fishline guide groove 107a. And, in the present embodiment as well, the guide portion 107f of the smaller diameter side wall portion 107d is formed such that it enters into a recessed portion 107h formed in the larger diameter side wall portion 107c. Also, the fishline can be guided to the fishline guide surface 107b of the fishline guide groove 107a by the two guide portions 107e and 107f in such manner that the fishline is held by and between them. This prevents the fishline from moving on the fishline guide surface 107b in the groove width direction, thereby being able to control the moving path of the fishline in a stable manner. The fishline guide surface 107b in the present embodiment is formed parallel to the axis of the line roller 107. Also, in the present embodiment as well, as shown by different hatching in Fig. 11, the portion forming the fishline guide surface 107b and one side wall portion 107c are formed of a common member, while the common member is then connected to the small diameter side wall portion 107d as a united body by means of threaded fitting. Now, Fig. 12 shows a side section view of a line roller 108 employed in a modification of the fifth embodiment. In the present line roller 108, a fishline guide surface 108b of the line roller 108 is formed in such a tapered shape that it is gradually increased in diameter toward the take-up rotation direction of the rotor. In the present modification as well, as shown by different hatching, three members which are used to form the right and left side wall portions 108c, 108d, and fishline guide surface 108b of the line roller 108 are produced separately from one another and, after then, as shown in Fig. 10, the large diameter side wall portion 108c and the member forming fishline guide surface 108b are connected together into a united body by means of threaded fitting, while the other small diameter side wall portion 108d and the member forming fishline guide surface 108b are connected together into a united body by pressure insertion, welding or adhesion. Now, Fig. 13 shows a side section view of a line roller 109 employed in a sixth embodiment of a spinning reel for fishing according to the invention. In the sixth embodiment, contrary to the fourth embodiment shown in Fig. 9, one side wall portion 109c of the line roller 109, which is situated on the rotor take-up rotation direction side, is set small in diameter, whereas the other side wall portion 109d situated on the opposite side is set large in diameter. In the sixth embodiment, the fishline guide surface 109b of the line roller 109 is set parallel to the axis of the line roller 109. Next, Fig. 14 shows a side view of a line roller 110 employed in a modification of the sixth embodiment. In the present modification, the fishline guide surface 110b of the line roller 110 is formed in such a tapered shape that it is gradually increased in diameter toward the take-up rotation direction side of the rotor. And, in the present modification as well, as shown by different hatching, three members which are respectively used to form the right and left side wall portions 110c, 110d and fishline guide surface 110b of the line roller 110 are produced separately from one another and, after then, as shown in Fig. 10, one side wall portion 110c is connected to the large diameter side of the member forming fishline guide surface 110b by pressure insertion, welding or adhesion, while the other side wall portion 110d is connected to the small diameter side of the member forming fishline guide surface 110b by pressure insertion, welding or adhesion. Now, Fig. 15 shows a side section view of a line roller 111 employed in a seventh embodiment of a spinning reel for fishing according to the invention. In the seventh embodiment, contrary to the fifth embodiment shown in Fig. 11, the side wall portion 111c of the line roller 111 situated on the rotor take-up rotation direction side is set small in diameter, whereas the other side wall portion 111d of the line roller 111 on the opposite side is set large in diameter. In the seventh embodiment, the fishline guide surface 111b of the line roller 111 is formed parallel to the axis of the line roller 111. Then, Fig. 16 shows a side view of a line roller 112 employed in a modification of the seventh embodiment. In the present modification, the fishline guide surface 112b of the line roller 112 is formed in such a tapered shape that it is gradually increased in diameter toward the take-up rotation direction side of the rotor. And, in the present modification as well, as shown by different hatching, the small diameter side wall portion 112c of the line roller 112 and the fishline guide surface 112b thereof are formed integral with each other, whereas the larger diameter side wall portion 112d, which is molded separately from them, is connected integrally to the above-mentioned integral body by pressure insertion, welding or adhesion. Now, Fig. 17 shows a side section view of a line roller 113 employed in an eighth embodiment of a spinning reel for fishing according to the invention. In the eighth embodiment, the fishline guide groove 113a of the line roller 113 is formed such that it is decreased in width from the outer periphery thereof toward the fishline guide surface 113b of the line roller 113. In the present embodiment, the fishline guide groove 113a is defined by two side wall portions 113c and 113d which respectively include mutually opposing wall surfaces 113e and 113f, while the two wall surfaces 113e and 113f are formed inclined such that the opposing distance between them is gradually decreased from their respective outer periphery sides toward the fishline guide surface 113b. And, in the present embodiment, the fishline guide surface 113b is formed parallel to the axis of the line roller 113. Now, Fig. 18 shows a side section view of a line roller 114 employed in a ninth embodiment of a spinning reel for fishing according to the invention. In the present embodiment, similarly to the embodiment shown in Fig. 17, the fishline guide groove 114a of the line roller 114 is formed such that the width thereof is gradually decreased toward the fishline guide surface 114b of the line roller 114. However, in the present embodiment, the side wall surface 114f of one side wall portion 114d is formed perpendicular to the axis of the line roller 114, while the side wall surface 114e of the other wall portion 114c opposed to the side wall surface 114f is formed inclined such that it gradually approaches toward the side wall surface 114f. In Figs. 19 and 20, there is shown a ninth embodiment of a fishline guide roller which is mounted on a bail support member. A fishline guide roller 249 is mounted to one bail support member 226 with the use of a mounting portion (a line slider) 228. The mounting portion 228 comprises a shaft portion 250 and an outer mounting portion 251 which formed on the outside of one end of the shaft portion 250. A through hole 226a is opened up in one bail support member 226, and a screw 252 inserted into the through hole 226a is threadedly engaged into a screw hole 250a formed in the shaft portion 250 of the mounting portion 228, so that the mounting portion 228 can be mounted in place. The shaft portion 250 includes the screw hole 250a in the central portion thereof and, in the outer periphery of the shaft portion 250 there are provided a securing portion 250b in the form of a step and a small diameter portion 250c. The inner race member 252a of a rolling bearing 252 and the cylindrical securing portion 253a of a securing member 253 are respectively fitted on the outer periphery of the small diameter portion 250c. A securing portion 249a in the form of a step and a large diameter portion 249b are formed on the inner periphery of the fishline guide roller 249 which guides a fishline 254 to a spool 217 so that the large diameter portion 249b is fitted on the outer periphery of the outer race member 252b while the securing portion 249a being in abutment with the rolling bearing 252. A securing member 253 includes the cylindrical securing portion 253a to be fitted with and fixed to the outer periphery of the small diameter portion 250c of the mounting portion 228, and a flange portion 253b which is brought into abutment with the bottom surface of a recessed portion 226b formed in the bail support member 226. The outer periphery of the fishline guide roller 249 includes a fishline guide portion 249c in the form of a small width groove and two fishline guiding inclined surfaces 249d and 249e which are respectively formed on the two sides of the fishline guide roller 249 in such a manner that they are inclined toward the fishline guide portion 249c. When the mounting portion 228 and fishline guide roller 249 are assembled into the bail support member 226, the outer race member 252b of the rolling bearing 252 is first fitted with the inner periphery large diameter portion 249b of the fishline guide roller 249 and is then contacted with and fixed to the securing portion 249a of the fishline guide roller 249. Thereafter, the inner race member 252a of the rolling bearing 252 is fitted with the outer periphery of the small diameter portion 250c of the bail mounting portion 228 and a washer 255 formed of synthetic resin is fitted with the outer periphery of a securing portion 253a formed in the securing member 253, so that the inner race member 252a of the rolling bearing 252 is held by the securing portion 250b of the bail mounting portion 228 and the securing portion 253a of the securing member 253, that is, the former is fitted with and fixed to the latter. The thus assembled bail mounting portion 228 and fishline guide roller 249 are mounted on the bail support member 226 by means of the screw 252. As in the above-mentioned structure, if the fishline guide roller 249 is mounted on the bail support member 226, then the outer race member 252b of the rolling bearing 252 is contacted with and fixed to the securing portion 249a of the fishline guide roller 249, the inner race member 252a of the rolling bearing 252 is fitted with the outer periphery of the small diameter portion 250c of the bail mounting portion 228, and the inner race member 252a of the rolling bearing 252 is held by and secured to the securing portion 250b of the bail mounting portion 228 and the securing portion 253a of the securing member 253. This can surely prevent the fishline guide roller 249 from clattering in the thrust direction as well as makes it possible to take up the fishline smoothly and stably. When the fishline 254 is guided to the spool, the fishline 254 is positively guided to the small-width-groove shaped fishline guide portion 249c by the two fishline guiding inclined surfaces 249d and 249e which are respectively formed on the two sides of the fishline guide roller 249 in an inclined manner. Further, the fishline guide portion 249c in the form of the small-width-groove shape regulates the unnecessary motion of the fishline in the axial direction on the outer periphery of the fishline guide roller 249 during the fishline take-up operation, to thereby stabilize the moving path of the fishline. Therefore, production of a line twist in the fishline can be prevented as much as possible when the fishline is operated, whereby a fishing operation can be performed smoothly. Now, in Figs. 21 and 22, there is shown a tenth embodiment of a fishline guide roller mounted on a bail support member. In the tenth embodiment of the fishline guide roller mounted on the bail support member, a fishline guide portion 249f in the form of a small-width groove formed on the outer periphery of the fishline guide roller 249 is formed in such a manner that it is shifted toward the bail support member 226. A fishline guiding inclined surface 249g is formed near to the bail mounting portion 228 and inclined toward the fishline guide portion 249f, whereas a wall-like portion 249h is formed near to the bail support member 226. The remaining structural portions of the tenth embodiment are similar to those of the previously described ninth embodiment of a fishline guide roller mounted on a bail support member, and thus the tenth embodiment can provide similar operation and effect to the ninth embodiment. Here, as in the above-mentioned respective embodiments, in the spinning reel for fishing of this type including a bail, a line slider of the above-mentioned type is used as means for holding a line roller. Conventionally, however, there have been proposed a various kinds of spinning reels for fishing which do not include a bail. And, in such conventional spinning reels for fishing, the line roller is supported through the arm lever and the hold means instead of the line slider. However, the present invention can also be applied to the spinning reels for fishing having such structure. Also, in the above-mentioned respective embodiments, the present invention is applied to a spinning reel for fishing of a type that the line roller is rotatably supported between the arm lever and line slider through the ball bearing. However, of course, the present invention can also be applied to a spinning reel for fishing of a type that a line roller is fixed between an arm lever and a line slider.

Claims: A fishline guide arrangement for guiding a fishline, said fishline guide arrangement comprising: a bail support member (5), a fishline guide roller (71) supported by said bail support member and having an axis, a first axial length (L) defined between opposite axial terminuses of said fishline guide roller, a maximum diameter (D), said fishline guide roller having an annular groove for receiving a fishline therein and preventing said fishline from moving axially along the guide roller, said annular groove having a second axial length (l), characterised in that a first ratio (l/L) of said second axial length (l), relative to said first axial length (L) is set within a range of 5-35% and/or a second ratio (L/D) of said first axial length (L) relative to said maximum diameter (D) is set within a range of 10-40%. A fishline guide arrangement according to claim 1, wherein said fishline guide roller includes: a pair of cylindrical surfaces distanced from each other in a direction of said axis and each concentric to said axis; a bottom surface located between said cylindrical surfaces; a pair of wall surfaces connecting said bottom surface to respective cylindrical surfaces; and wherein said annular groove is defined by said bottom surface and said wall surfaces. A fishline guide arrangement according to claim 2, wherein each of said wall surfaces is orthogonal to said axis. A fishline guide arrangement according to claim 2, wherein each of said wall surfaces is conical. A fishline guide arrangement according to at least one of the preceding claims 1 to 4, wherein said fishline guide roller has at least one annular projection into said annular groove in a direction of said axis. A fishline guide arrangement according to at least one of the preceding claims 1 to 5, wherein said annular groove has an asymmetrical shape as viewed in a plane containing said axis. A fishline guide arrangement according to claim 6, wherein said annular groove is defined by a wall surface orthogonal to said axis, a conical surface concentric to said axis, and a bottom surface extending between said wall surface and said conical surface. A fishline guide arrangement according to claim 7, wherein said bottom surface is conical. A fishline guide arrangement according to claim 6, wherein: said annular groove is defined by a first wall surface, a bottom surface, and a second wall surface located opposite from said first wall surface with respect to said bottom surface; said first and second wall surfaces extend from said bottom surface radially outwardly with respect to said axis and respectively terminate at first and second edges; and said first edge is located further from said axis than said second edge. A fishline guide arrangement according to claim 9, wherein each of said wall surfaces is orthogonal to said axis. A fishline guide arrangement according to at least one of the preceding claims 1 to 10, wherein said fishline guide roller includes: a first cylindrical surface concentric to said axis, a second cylindrical surface concentric to said axis and having a diameter smaller than a diameter of said first cylindrical surface; a conical surface extending from said first cylindrical surface toward said second cylindrical surface; and a wall surface orthogonal to said axis and connecting said conical surface to said second cylindrical surface. A fishline guide arrangement according to claim 11, wherein a portion of said annular groove is defined by said second cylindrical surface and said wall surface.

Inventors: ITO YUKIO, KANEKO KYOICHI, MIYAJIMA MASAMITSU, SHIBATA TAKASHI, SHINOHARA EIJI, TAKEUCHI SHINJI, TSUTSUMI WATARU, ITO, YUKIO, KANEKO, KYOICHI, MIYAJIMA, MASAMITSU, SHIBATA, TAKASHI, SHINOHARA, EIJI, TAKEUCHI, SHINJI, TSUTSUMI, WATARU
Applicants: DAIWA SEIKO INC, DAIWA SEIKO INC.
Application year: 1995
Main classification: A01K89
IPC codes: A01K89