Spinning reel for fishing

Abstract: A balancer is provided in the outer circumferential portion of a rotor (103) of a spinning reel at the rear end of the rotor (103) and located at the side of a bail (119) in the fishline winding position thereof so that the center of gravity of the reel is located under a reel leg to facilitate the manipulation of the reel, and the rotative balance of the rotor (103) is improved to stably and smoothly wind a fishline on the reel. The axis of the pivotally coupled portion of a bail support member, which is pivotally coupled to a bail support arm (103F,103G), is off set (105) from the axis of the rotor (103) toward the side of the bail (119) in the fishline unwinding position to reduce the weight of the balancer.

Description: The present invention relates to a spinning reel for fishing of the type as described in the preamble of claim 1. A spinning reel for fishing of this type is described in US-A-4389027. The known spinning reel includes a rotor rotatably supported within a casing. The rotor includes two arms extending from said rotor at opposite sides of the rotational axis of the rotor. A bail is supported by the support arms, and is pivotable around an axis offset with respect to the rotational axis of the rotor. A fish line guide roller is attached to one of the arms, and a balanced weight is attached to the other arm. The balance weight is screwed onto the outside of this arm and extends towards the tip thereof, while the greatest thickness is provided around the pivot axis of the bail. In conventional spinning reels for fishing, a semicircular bail is supported with bail support members such as levers and holders on the tips of bail support arms formed on a rotor and located opposite each other across the axis of the rotor. The bail together with the bail support members can pivot on the support arms so as to be inverted into either of a fishline winding position and a fishline unwinding position. However, since the bail and the bail support members are not shaped symmetrically right and left, the rotative balance of the rotor is deteriorated. To solve the problem, a balancer is attached to a rotor opposite a bail in the fishline winding position thereof across the axis of the rotor, as disclosed in the JP-UM-80887/77. To otherwise solve the problem, a balancer is provided on the tip of one of the support arms so as to be moveable in parallel with a spool shaft, as disclosed in the JP-UM-33033/78. Further, the following solutions are also known in the art the axis of the pivotally coupled portion of a bail, which is pivotally coupled to a bail support arm, is located off the axis of a rotor opposite a bail in the fishline winding position thereof and a pair of support members located on a rotor opposite each other across the axis of the rotor are made of different materials having respective specific gravity. However, resent tendency is that the center of gravity of the assembly of a rotor and other reel components thereon is more biased or moved forward since a ball bearing is used for a fishline guide roller at the tip of the bail support member to improve the efficiency of winding of a fishline, as disclosed in the JP-UM-59063/89, or a fishline tangling preventive member is provided on a bail support member, as disclosed in the JP-UM-74260/91 or JP-UM-9564/92. To yet otherwise solve the problem, a balancer is provided in the rear end of the outer circumferential portion of the rotor at the rearward portion from the support arm not only to avoid the forward biasing of the center of gravity of the entire assembly of the rotor and other reel components thereon but also to prevent the couple from being generated thereon at the time of the rotation of the rotor, as disclosed in the JP-UM-127167/92. However, since the balancer-housing projects from the outer circumferential portion of the rotor, the reel having such rotor suffers from the following problems: (1) If such a balancer is provided in the outer circumferential portion of the rotor of a spinning reel in which the rotor is rapidly rotated by the turning of a handle to wind a fishline on a spool, the outward projections caused by the balancer requires a user to pay more attention to the projections to secure safety in winding the fishline on the spool. For that reason, the manipulating property of the reel is deteriorated. (2) Since the balancer-housing provides a partially projecting outer configuration the reel is not compact and is low in portability and likely to undergo scratch flaw or damage in the projecting portion if the reel is dropped or collides against something. (3) Since the spinning reel operates so that the fishline is wound on the reciprocating spool by rotating the rotor having a fishline guide, the fishline tends to be twisted through the repetition of winding and unwinding thereof so that the fishline is likely to tangle on the projecting portion on the outer circumference of the rotor at the time of the winding or unwinding of the fishline so as to hinder smooth fishing. (4) Since the outer circumferential portion partially projects from the body of the rotor, the appearance of the rotor is not good. (5) Since the balancer is merely added to the rotor, the entire weight of the rotor is increased to make it difficult to use the rotor as a component of a fishing reel. Accordingly, it is an object of the present invention to provide a spinning reel for fishing as described in the preamble of claim 1 and having an improved rotative balance of the rotor at low weight of the rotor. According to the present invention, this objective is solved by a spinning reel for fishing as mentioned above, wherein said balancer is arranged at least in said first support arm and is located in said fishline winding side. Preferred embodiments of the invention are laid down in the further dependent claims. Since the center of gravity of the bail of the spinning reel is located forwardly of the rotor, the balancer means should be provided behind the bail to virtually shift the center of gravity thereof rearward to correct the longitudinal imbalance of the assembly of the rotor and other components thereon or prevent the generation of the couple coupling forces thereon. Further, since the weight of the bail support member having the fishline guide is larger than that of the other bail support member and the center of gravity of the former bail support member is located forwardly of the rotor, the balancer means should be provided behind the former bail support member to virtually shift the center of gravity rearward to correct the longitudinal imbalance of the assembly. Thus, a balaner means consisting of two balancers would be necessary, one of which is provided in an area defined by the bail positioned in the fishline winding position and the other of which is provided in an area defined by the bail support member having the fishline guide in a frontal view of the rotor. However, these two balancers can be replaced with a mixing composite balancer located at a certain position within the overlapped portion of the a fore-mentioned areas. In defining the certain position within or near the bail-side portion of the support arm supporting the bail support member having the fishline guide, the composite balancer can be accommodated within the support arm to improve the rotative balance of the rotor as much as possible while making the assembly of the rotor and other reel components thereon compact. If the certain position is located relatively far from the bail-side portion of the support arm, the composite balancer can be further divided so as to be accommodated in both the support arms to improve the rotative balance of the rotor as much as possible. The off-set arrangement of the rotation axis of the bail support members relative to the rotor axis in coperation with the above-noted balancer arrangement can prevent both the in balance of the centrifugal forces and the generation of the couple forces when the rotor is rotated, while minimizing the increase of the weight of the assembly of the rotor and the other reel components thereon. The imbalance of centrifugal forces, which results from the weight difference between the bail support members can be minimized, without diminishing the compactness of the assembly, if a further balancer is provided in the support arm supporting the bail supporting member having no fishline guide. Preferably the spinning reel which is for fishing is provided with bail support members for supporting a bail and which are pivotally coupled to support arms integrally formed on a rotor and located opposite to each other across the axis of the rotor, and are located at the tips of the arms. The width of the support arm coupled with the bail support member having the fishline guide is increased from the tip of the arm toward the butt thereof, and a balancer is provided within a space of the arm defined by the increased width at the butt of the arm. The width of the support arm may be stepwise increased from the tip thereof toward the butt thereof. The width the bail support arm may be increased from the tip thereof toward the butt thereof to cause one side edge of the arm to extend nearly in parallel with the axis of the rotor but to cause the other side edge of the arm to extend obliquely to the former side edge. The pivot axis of the bail support members, relative to the support arms, is off-set away from the axis of the rotor toward the side defined by the bail positioned in the fishline unwinding position thereof to make it possible to not only improve the longitudinal balance of the rotor with respect to its rotation but also reduce the weight of the additional balancer for improving the rotative balance. Since the width of the bail support arm of the spinning reel preferably is increased from the tip of the arm toward the butt thereof and the balancer preferably is provided in the arm at the butt thereof, the weight of the rotor and the other reel components thereon can be prevented from being biased toward the tip of the arm due to the weight of the bail and the bail support member. The rotative balance of the rotor may thus be stabilized to smoothly and easily wind a fishline on the reel. Preferably the spinning reel which is for fishing and which includes a bail which can be inverted into either of a fishline winding position and a fishline unwinding position; a recess provided in a support arm, to the front portion of which a bail support member for supporting the bail is coupled; an outer plate closing the recess; and mechanical means provided in the recess in order to invert the bail into either of the positions. The reel is preferably provided with an inner plate which is provided in the recess along the outer plate; the mechanical means are disposed on the inner plate; and plate-like balancer for improving the rotative balance of a rotor are provided on the inner plate opposite the mechanical means. The reel may have a plate-like balancer provided in the recess along the mechanical means which is for improving the rotative balance of a rotor and also serves as inner plate. The inner plate divides the space of the recess into layers piled together in the direction of thickness of the recess, the mechanical means for inverting the bail into either of the positions is disposed in one of the inner and outer layers on the inner plate, and the plate-like balancer is disposed in the other one of the outer and inner layers on the inner plate. For that reason, the support arms can be made compact. The plate-like balancer may be used as the inner plate so that additional inner plate can be dispensed with. Hereinafter, the present invention is illustrated and explained in greater detail by means of preferred embodiments in conjunction with the accompanying drawings. In the accompanying drawings: FIG 1 is a cutaway side view of an embodiment of a spinning reel which is for fishing and is according to the present invention; FIG. 2 is an enlarged cutaway side view of a major part of the reel; FIG. 3 is a side view of the reel seen on the side of a fishline guide roller; FIG. 4 is a side view of the reel seen opposite the side; FIG. 5 is a side view of the rotor of the reel to chiefly show the support portion of the rotor for a bail support member shown in FIG. 4; FIGS. 6A and 6B are front and longitudinally sectional view of the rotor, respectively; FIG. 7 is a side view of the rotor to chiefly show the support portion thereof for a bail support member shown in FIG. 3; FIG. 8 is a view to illustrate the generation of a couple on a rotor; FIG. 9 is a view to illustrate anti-couple balancers; FIG. 10 is a view to illustrate other anti-couple balancers; FIG. 11 is a side view of a spinning reel which is another embodiment ; FIG. 12 is a side view of a major part of the reel in the state that a cover is removed; FIG. 13 is a longitudinally sectional view of a major part of a spinning reel which is a modification of the embodiment shown in FIG. 11; FIG. 14 is a side view of a major part of a spinning reel which is another modification of the embodiment shown in FIG. 11; FIG. 15 is a cutaway side view of a spinning reel which is yet another modification of the embodiment shown in FIG. 11; FIG. 16 is a front view of a major part of a spinning reel which is yet another modification of the embodiment shown in FIG. 11; FIG. 17 is a side view of the part in the state that a cover is removed; FIG. 18 is another side view of the part in the state that the cover is removed; FIG. 19 is a cutaway side view of a spinning reel which is yet another modification of the embodiment shown in FIG. 11; FIG. 20 is a side view of a major part of the reel in the state that a cover is removed; FIG. 21 is a sectional view of the part along line 335-335 shown in FIG. 20; FIG. 22 is a cutaway side view of a spinning reel which is a yet another embodiment of the present invention; FIG. 23 is a cutaway side view of a major part of the reel seen along an arrow 437 shown in FIG. 22; FIG. 24 is a cutaway side view of the part seen along an arrow 438 shown in FIG. 23; FIG. 25 is a cutaway side view of the part seen along an arrow 39 shown in FIG. 22; FIG. 26 is a longitudinally sectional view of the part along line E-E shown in FIG. 25; FIG. 27 is a cutaway side view of a major part of a spinning reel which is a modification of the embodiment shown in FIG. 22; and FIG. 28 is a cutaway side view of a major part of a spinning reel which is yet another modification of the embodiment shown in FIG. 22. FIGS. 1 and 2 show an embodiment of a spinning reel which is for fishing and is an embodiment of the invention. A bearing 110 is mounted on a drive quill 102 in a front portion 101a of the casing 101 so that the quill is rotatably supported with the bearing. A ratchet wheel 112 and a collar 113 are mounted on the quill 102 in front of the bearing 110. An inner cylindrical portion 103a of a rotor 103 is fitted on the quill 102 in front of the collar 113 so that the rotor is not rotatable relative to the quill. A nut 114 is theadingly engaged with the quill 102 at the front end thereof, and tightened on the inner cylindrical portion 103a of the rotor 103. A pinion (not shown in the drawings) is mounted on the quill 102 and engaged with a drive gear (not shown) so that the quill can be rotated through the pinion and the gear by turning the handle 115, to rotate the rotor 103. A spool shaft 116 is fitted in the quill 102, and projects therefrom. A spool 111 is supported on the spool shaft 116 at the front end thereof so that the spool can be reciprocated backward and forward together with the spool shaft in conjunction with the rotation of the rotor 103. The rotor 103 includes, a front wall 103b, an outer cylindrical portion 103c, and a pair of support arms 103f and 103g extending forward from the rear part of the outer cylindrical portion. The bail support member 104, which has a fishline guide roller 120, is supported with the screw 117 on the boss 103h of the support arm 103f so that the member can be pivotally inverted into either of a fishline winding position shown by full lines in FIG. 3, and a fishline unwinding position shown by two-dot chain lines therein. The other bail support member 105 is supported with the other screw 118 on the boss 103i of the other support arm 103g so that the member can be pivotally inverted into either of a fishline winding position shown by full lines in FIG. 4, and a fishline unwinding position shown by two-dot chain lines therein. The bail 119 is coupled at one end thereof to the bail support member 104 in the vicinity of the fishline guide roller 120 and at the other end thereof to the other bail support member 105. The axes 103h' and 103i' of the bosses 103h and 103i on which the bail support members 104 and 105 can respectively pivot relative to the support arms 103f and 103g are off-set away from the axis LA of the rotor 103 toward a side opposite from the bail 119 positioned in the fishline winding position thereof so that the distance between the axis of the rotor and each of the axes of the bosses is 1 to 7 mm. Besides, the rotor 103 is shaped or arranged in consideration of the biasing weight of the semicircular bail 119 and that of the balancers 107 and 108 in order to improve the radial rotative balance of the rotor through both the disposition of the axes 103h' and 103i' of the bosses 103h and 103i and the shaping of the rotor so that the weight of the assembly of the rotor and the balancers is smaller than in the case that the balancers are only attached to the rotor. The support arms 103f and 103g extend from the butt portions 103d and 103e thereof to the tip portions thereof so as to be oriented from the side of the fishline winding position of the bail 119 toward the side of the fishline unwinding position thereof, as shown in FIGS. 3 and 4. That is, the tip portion of each support arm 103f, 103g is shifted away from the side defined by the bail 119 in the fishline winding position relative to the butt portions 103d, 103e thereof. However, the arms 103f and 103g are not confined thereto but may extend substantially along the axis LA of the rotor 103 so that only the butt portions of the arms are located nearer the side of the fishline winding position of the bail 119 than the other portions thereof, or so that only the central portions and butt portions of the arms located nearer the side of the fishline winding position of the bail than the tip portions thereof. The sides of the arms 103f and 103g, which face the bail 119 in the fishline winding position, have recesses 103j and 103k in the butt portions 103d and 103e of the arms. The balancers 107 and 108 are provided in the recesses 103j and 103k. The butt portion 103d has a through hole 103m extending through the portion toward the axis of the rotor 103 as best shown in FIG 2. A L-shaped lever 109 for inverting the bail support members 104 and 105 and the bail 119 from their fishline unwinding positions shown by two-dot chain lines in FIGS. 3 and 4, into their fishline winding positions shown by full lines therein is provided in the support arm 103f, as shown in FIGS. 1, 2 and 7. The projection 109a of the lever 109, which is located at one end of the lever, is fitted in the hole of the bail support member 104, which is not shown in the drawings. The other end 109b of the lever 109 is fitted in the through hole 103m of the arm 103f near the cam portion 101b of the casing 101, as shown in FIGS. 1 and 2, so that the end can be put into contact with the cam portion. Covers 103p and 103q are respectively secured to the support arms 103f and 103g by screws 103r and 103s so that the covers cover the outer surfaces of the arms and the lever 109 to protect them. When a fishhook and a fishline are cast away, the fishline is unwound from the spool 111 as the bail support members 104 and 105 are in their fishline unwinding positions shown by the two-dot chain lines in FIGS. 3 and 4. When the rotor 103 is thereafter rotated by turning the handle 115, the end 109b of the lever 109 is put into contact with the cam portion 101b of the casing 101 so that the lever is moved rearward to invert the bail support member 104 to put both the bail support members 104 and 105 and the bail 119 into their fishline winding positions. At that time, the fishline is swung by the bail 119 so that the fishline is put onto the fishline guide roller 120. When the rotor 103 is then rotated by turning the handle 115, the fishline is wound on the spool 111. The reasons for determining the above-described constitution and operation of the spinning reel are described from now on. The centrifugal forces of both the halves of a rotor 103', which are divided from each other to the sides of the fishline winding position and fishline unwinding position of a bail 119 across the axis LA of the rotor, cannot be balanced to each other only by providing a balancer W on the outer cylindrical portion of the rotor opposite the bail to counteract the centrifugal force thereof, because a couple is generated on the rotor due to the distance H between the balancer and the center GB of gravity of the bail, as shown in FIG. 8. For the balancing, the center GB of gravity of the bail 119 needs to be shifted rearward. It was disclosed in the Japanese Utility Model Application (OPI) No. 127167/92 (the term "OPI" as used herein means an "unexamined published application") that for such a purpose, a balancer is provided in the rear portion of the cylindrical body of a rotor at the side of a bail. However, the rear portion of the cylindrical body of the rotor projects outward due to the providing of the balancer in the portion to deteriorate the appearance of the rotor, the weight of the assembly of the rotor and other components thereon is increased, and the rotor is not compact, so that the rotor is not appropriate for a reel. The form of the rotor 103 of the spinning reel which is the embodiment is designed to improve the rotative balance of the rotor as much as possible while minimizing the weight and size of the rotor. FIG. 9 is a front view of the rotor 103 to illustrate the principle of the embodiments. The bail support members 104 and 105 are pivotally coupled to the support arms 103f and 103g of the rotor 103 at the front ends of the arms so that the axes of the pivotally coupled portions of the bail support members extend off the axis LA of the rotor in a direction opposite from the bail 119 in the fishline winding position. It is now supposed that a balancer A is provided on the rear portion of the rotor 103 to virtually shift the center of gravity of the bail 119 rearward. Since a couple is similarly generated on the rotor when a balancer is merely provided for counterbalancing the weight difference between the reel components attached to the support arms 103f and 103g with respect to the circumferential weight distribution, it is also supposed that a balancer B is provided on the rear portion of the rotor 103 behind the bail support member 104 attached to the support arm 103f to shift the center of gravity of the bail support members 104 and 105 rearward. The balancers A and B are located as posteriorly as possible in order to minimize the entire weight of the assembly of the rotor 103 and the other components thereon. The center of gravity of the assembly can thus be virtually shifted rearward by the balancers A and B of minimum weight. Therefore, the balancers A and B are located at or near the rear end of the rotor 103. The balancers A and B can be replaced with a resultant or composite balancer C. Although the resultant balancer C is not always on a straight line LD extending through the butt portions 103d and 103e of the support arms 103f and 103g, which portions are located off the axis LA and at the side of the bail 119 in the fishline winding position with regard to FIG. 9, it is supposed that the resultant balancer is on the straight line and divided into two balancers D and E in the butt portions in order to improve the rotative balance of the rotor 103 as much as possible while making the assembly of the rotor and the other components thereon compact, as shown in FIG. 9. The balancers D and E correspond to those 107 and 108 shown in FIGS. 3 and 4, respectively. If the balancers A and B are provided on the rotor 103 in front of the rear end thereof to locate the resultant balancer C nearer the axis LA of the rotor, the balancers D and E are not necessarily located in the butt portions of the support arms 103f and 103g but located slightly more anteriorly. Besides, the resultant balancer C can be located in the support arm 103f or near it, depending on the distribution of the weight of the rotor 103 and the other components thereon, as shown in FIG. 10. In that case, none of the divided balancers needs to be located in the other support arm 103g. The balancer C or the balancers D and E are thus provided to prevent the generation of the couple. The support arms 103f and 103g are located off the axis LA of the rotor 103 opposite the bail 119 in the fishline winding position across the axis with regard to FIG. 9 so as to counteract the centrifugal forces of the balancer A and the bail, which act in the radial direction of the rotor from the axis thereof toward the central portion of the bail when the rotor is rotated. Since the bail 119 is inverted into either of its fishline winding position and fishline unwinding position, the distance between the inner curved surface of the bail and the outer circumferential surface of the spool 111 depends on the distance ΔL between the axis LA of the rotor 103 and each of the axes of the pivotally coupled positions of the bail support members 104 and 105. If the bail 119 in the fishline winding position is displaced toward the axis LA of the rotor 103 as to FIG. 9, the former distance is increased for the bail in the fishline unwinding position so that the fishline is less likely to come into contact with the reel at the time of the casting-away of the fishhook and the fishline, and they can therefore be smoothly cast away. However, with the displacement, the former distance is decreased for the bail in the fishline winding position so that the fishline is more likely to come into contact with the reel. Therefore, the latter distance ΔL is limited, and usually about 1 to 7 mm. For that reason, the centrifugal force of one half of the assembly of the rotor and the other components thereon, which includes the bail 119, and that of the other half of the assembly, which does not include the bail, cannot completely be balanced to each other only by setting the latter distance ΔL, in some case. In that case, an auxiliary balancer F may be provided on the outer or inner surface of the front wall 103b of the rotor 103 or the inside circumferential surface of the outer cylindrical portion 103c thereof, as shown by a dotted line in FIG. 6, to completely balance the centrifugal forces to each other. Even if the auxiliary balancer F is provided, it does not hinder the reel from being made compact. To minimize the rotative imbalance of the rotor 103, which results from the centrifugal forces which are based on the weight of the balancer B and the weight difference between the components attached to the support arms 103f and 103g, a balancer may be provided in the arm 103g, or the bail support member 105 may be made of a higher-specific-gravity material such as zinc than the other bail support member 104. It is preferable to locate the balancer near the front end of the arm 103g. As far as the balancer is provided in the arm, it does not hinder the reel from being made compact. If the balancer is located near the front end of the arm 103g, the center of gravity of the bail support member 104 attached to the other arm 103f at the tip thereof does not need to be much lowered as to FIG. 9 or 10 and the weight of the balancer B can therefore be reduced to result in diminishing that of the reel. Since the butt portions 103d and 103e of the support arms 103f and 103g are large in width, a bail urging means, a bail inversion means and the like can be provided in the butt portions. The rotative balance of the rotor can be improved without adversely affecting such means. The support arms 103f and 103g are covered with the covers 103p and 103q so that the balancers 107 and 108 can be incorporated into the support arms in the same way as the bail inversion lever 109 and springs for urging the bail support members to invert them into either of the fishline winding position and the fishline unwinding position be incorporated into the support arms 103f and 103g. Further, the arms 103f and 103g and other components incorporated therein can be covered with the common covers 103p and 103q. Thus, it is possible to easily perform work and simplify the construction of the reel. Instead of the bail inversion lever 109, a return member may be provided on the hanger 101c of the reel over the casing 101 to cause the bail support member 104 to collide against the return member to invent the bail 119. If each of the balancers 107 and 108 is made of a plurality of sheets, it is convenient because the weight and size of the balancer can be finely modulated by changing the number of the sheets. If the sheets differ from each other in specific gravity as sheets of lead, zinc, brass and the like, the freedom of the modulation is heightened. Besides, it is possible that the rotor itself is manufactured to be commonly used for many reels onto which fishline guide portions different from each other in constitution is selectively mounted and which have or do not have a bail inversion lever. The sheets can be manufactured by punching, not to require processing such as the deburring of a cast product and parting, and can thus be lowered in cost. A spinning reel provided in accordance with the present embodiment includes a rotor which is rotated by turning a handle. The rotor is not only made smaller in size and weight and simpler in constitution, but also the rotative imbalance of the rotor, which is caused by the weight imbalance of reel components attached to the rotor, is minimized. The manipulating property of the reel can be enhanced. FIGS. 11 and 12 show another embodiment of spinning reel which is for fishing, in accordance with the invention. A pair of support arms 302 are integrally formed on the rear portion of the rotor 301, and located opposite each other across the axis of the rotor. The bail 303 is fixed at both the ends thereof to the bail support members 304 and 304'. The bail support members 304 and 304' are pivotably coupled to the support arms 302 at the tips thereof, respectively, so that the bail 303 can be inverted into either of a fishline winding position and a fishline unwinding position through the action of a spring S in a conventional manner. The support arm 302 fitted with the bail support member 304 having the fishline guide portion 303' is so shaped that the width there of is gradually increased from the tip of the arm to the butt thereof and a recess 305 is defined therein, in which a balancer 306 is secured at the butt of the arm so that the balancer is located at the side of the bail 303 in the fishline winding position. The cover 307 is removably attached to the support arm 302, and closes the recess 305. FIG. 13 shows a major part of a spinning reel which is a modification of the embodiment. The difference of the reel from the embodiment is that a balancer 306 is secured to a cover 307. FIG. 14 shows a major part of a spinning reel which is another modification of the embodiment. The difference of the reel from the embodiment is that the width of a recess 305 is stepwise increased. FIG. 15 shows a major part of a spinning reel which is yet another modification of the embodiment. The difference of the reel from the embodiment is that a bail inversion means 308 is provided in the recess 305 of a support arm 302. FIGS. 16, 17 and 18 show a major part of a spinning reel which is yet another modification of the embodiment. The difference of the reel from the embodiment is that the width of each of support arms 302 is increased from the tip thereof toward the butt thereof to cause one side edge of the arm to extend nearly in parallel with the axis of a rotor 301 but to cause the other side edge of the arm to extend obliquely to the former side edge toward the side of the bail in the fishline winding position. One of the arms has a recess 305 in which a balancer 306 is provided at the side of the bail in the fishline winding position thereof, and the other of the arms has a recess 305' in which another balancer 306' and an externally kicked means 308' for inverting the bail are provided so that the balancer is located at the side of the bail in the fishline winding position. Although the balancer 306 is provided in the recess 305 of the support arm 302 at the side of the bail 303 in the fishline winding position in each of the above-mentioned spinning reels, another balancer equal to or larger or smaller in weight than the former may also be provided in the recess at the side of the bail 303 in the fishline unwinding position as shown by dotted lines in FIGS. 3, 4 and 5. Instead of the these balancers, a balancer may be provided in the recess 305 along the entire butt edge thereof. In the embodiment, since the support arm 302 fitted with the bail support member 304 fishline guide portion 303' is larger in width that the other bail support arm, the weight of the former arm and the balancer 306 provided therein at the butt of the arm counteracts that of the bail 303 to prevent the weight of the assembly of the rotor 301 and the other reel components thereon from being biased toward the tip of the arm. The rotative balance of the rotor 301 at the time of winding of a fishline on the reel is thus improved to smoothly perform the winding. Besides, the recess 305 of the arm 302 provides a space in which an urging means and an inversion means for the bail 303 can be accommodated. FIGS. 19, 20 and 21 show a spinning reel which is yet another modification of the embodiment. The difference of the reel from the embodiment is that the axes of the pivotally coupled portions of bail support members 304 and 304', which are pivotally coupled to support arms 302, extend off the axis a of a rotor 301 and at the side of a bail 303 in the fishline unwinding position thereof, and a balancer 306 is provided in the arm of larger width than the other arm and located at the butt of the former arm at the side of the bail in the fishline winding position thereof. For that reason, the rotative balance of the rotor 301 is not only improved, but also the bail support member 304 and 304' serve to stabilize the balance and the weight of the balancer 306 is reduced. A spinning reel provided in accordance with the present embodiment includes a support arm whose width is increased from the tip of the arm toward the butt thereof, and a balancer disposed in the arm at the butt thereof to prevent the weight of the assembly of a rotor and other reel components thereon from being biased toward the tip of the arm due to the weight of the fishline guide portion and the bail. For that reason, the rotative balance of the rotor at the time of winding of a fishline on the reel can be improved in a simple and easy manner to smoothly perform the winding. Besides, an urging means and an inversion means for the bail can be easily disposed in the wide recess of the support arm. The rotative balance of the rotor can be easily improved without adversely affecting the means. The axes of the pivotally coupled portions of bail support members, which are pivotally coupled to the support arms, may be located off the axis of the rotor and at the side of the bail in the fishline unwinding position thereof to improve the rotative balance of the rotor to more stabilize the balance and reduce the weight of the balancer. FIGS. 22 to 26 show another embodiment of a spinning reel which is for fishing, according to the invention. When the handle 420 is turned, the rotor 410 is rotated and the spool 412 is reciprocated backward and forward so that a fishline is wound on the spool while being guided by the fishline guide roller 422. The support arms 414 and 416 are provided on the rotor 410, and located opposite each other across the axis of the rotor. The bail support member 424 is coupled to the front portion of the support arm 414 by the screw 426 so as to be swingable about the screw. The fishline guide roller 422 is attached to the bail support member 424 at the tip thereof. Another bail support member 438 is coupled to she front portion of the other support arm 416 by the screw 436 so that the member can be slung about the screw. The bail 418 is attached at both the ends thereof to the fishline guide roller 422 and the bail support member 438. The support arm 414 for the bail support member 424 has a recess 414A in which the spring means 434 for urging the bail 418 to invert it into either of a fishline winding position and a fishline unwinding position is provided. The other support arm 416 has a recess 416A in which the inversion means 446 for inverting the bail 418 from the fishline unwinding position into the fishline winding position is provided. The outer plates 428 and 440 are fastened to the support arms 414 and 416 by screws 428A and 440A, and close the recesses 414A and 416A, respectively. The inner plates 430 and 442 are fastened to the arms 414 and 416 along the outer plates 428 and 440 so that the inner plates divide the spaces of the recesses 414A and 416A into layers piled together in the directions of thickness of the recesses. The inner plates 430 and 442 are engaged on the steps 414B and 416B of the arms 414 and 416, and fastened thereto together with the outer plates 428 and 440 by the screws 428A and 440A. The inner plates 430 and 442 may be otherwise secured to the steps 414B and 416B by an adhesive. The spring means 434 and the inversion means 446 are located inside the inner plates 430 and 442, respectively. Without the plate-like balancers 432 and 444, the portion of the spinning reel at the support arm 414 and that of the reel at the other support arm 416 would differ from each other in distribution of weight so as to cause the centers of gravity of the portions to differ from each other in location along the axis of the rotor 410 to hinder it from being smoothly rotated. To avoid such hindrance, the balancers 432 and 444 are provided in the support arms 414 and 416 to shift the centers of gravity of the portions rearward and prevent the rotation of the rotor 410 from being unsmoothly rotated due to the imbalance of the centrifugal forces of the portions. The balancers 432 and 444 are located in the layers between the outer and the inner plates 428, 430, 440 and 442. The rotative balance of the rotor 410 is thus improved. Since the plates 428, 430, 440 and 442 and the plate-like balancers 432 and 444 are provided in the support arms 414 and 416, the arms can be made compact. Although the support arms 414 and 416 are provided with the outer and the inner plates 428, 430, 440 and 442 and the balancers 432 and 444 in the embodiment, the present device is not confined thereto but may be otherwise constructed so that both of the arms are fitted with the outer plates but only one of the arms is fitted with the inner plate and the balancer, or that both of the arms are fitted with the outer and the inner plates but only one of the arms is fitted with the balancer. FIG. 27 shows a major part of a spinning reel which is a modification of the embodiment. The difference of the reel from the embodiment is that the length of the inner plate 430' of the reel is equal to nearly a half of that of the inner plate 430 of the preceding reel. FIG. 28 shows a major part of a spinning reel which is another modification of the embodiment. The difference of the reel from the embodiment is that the reel includes a plate-like balancer 432' which also serves as an inner plate. A spinning reel provided in accordance with the present embodiment includes support arms having recesses whose spaces are divided into layers piled together in the directions of thickness of the recesses so that mechanical means and plate-like balancers are separately disposed in the layers. For that reason, the rotative balance of a rotor can be not only improved but also the support arms can be made compact. Since the balancers are completely separated from the mechanical means, it is easy to replace the balancers with other balancers of different weight in order to modulate the rotative balance of the rotor.

Claims: Spinning reel for fishing, comprising: a bail (119, 303, 418) which can be inverted into either of a fishline winding position and a fishline unwinding position; a pair of first and second bail support members (104, 105, 304, 304', 424, 438) supporting said bail thereon, said first bail support member (103, 104, 304, 424) having a fishline guide (120, 303', 422); and a rotor (103, 301, 410) defining a first axis (LA) around which said rotor is rotatable and having a pair of first and second support arms (103f, 103g, 302, 414, 416) located opposite to each other across said rotation axis, said first support arm (103f, 302, 414) supporting said first bail support member (104, 304, 424) and said second support arm (103g, 302, 416) supporting said second bail support member (105, 304, 438) so as to permit said first and second bail support members to pivot around a second axis (LB), said rotor further defining with respect to said first axis a fishline winding side to which said bail in said fishline winding position belongs and a fishline unwinding side to which said bail in said fishline unwinding position belongs, said second axis (LB) is off-set from said first axis (LA) in a direction away from said fishline winding side toward said fishline unwinding side; and a balancer (107, 108, 306, 306', 432, 444, 432') for improving rotative balance of said rotor is provided, characterized in that said balancer (107, 108, 306, 306', 432, 444, 432') is arranged at least in said first support arm (103f, 302, 414) and is located in said fishline winding side. Spinning reel according to claim 1, wherein said first support arm (103f, 302, 414) extends from said rotor (103, 301, 410), a proximal end of said first support arm having a recess (103j, 305, 414A) at its corner for accommodating said balancer (107, 108, 306, 432, 444) therein. Spinning reel according to claim 1 or 2, wherein a cover (103p, 103q, 307, 428, 440) is provided for closing an opening of said first support arm. Spinning reel according to any one of claims 1 to 3, wherein each of said first and second support arms (103f, 103g, 302, 414, 416) extends from said rotor (103, 301, 410) in a direction inclined relative to said first axis (LA). Spinning reel according to any one of claims 1 to 4, further comprising an additional balancer for correcting circumferential weight-distribution of said rotor. Spinning reel according to any one of claims 1 to 5, wherein said pair of first and second support arms (103f, 103g, 302, 414, 416) project from said rotor (103, 301, 410) and each having a distal end portion and a proximal end portion (103d, 103e) having a larger width than that of said distal end portion; and said balancer (107, 108, 306, 432, 444) is provided in said proximal end portion of said first support arm (103f, 302, 414). Spinning reel according to any one of claims 1 to 6, wherein said first support arm (414) forms a recess (414A); an outer plate (428) is removably attached to said support arm for closing said recess; mechanical means (434) accommodated in said recess for inverting said bail (418) into either of a fishline winding and unwinding positions through said bail support member; and a plate-like balancer (432) provided in said recess between said outer plate and said mechanical means for improving rotative balance of a rotor. Spinning reel according to claim 7, further comprising an inner plate (430) provided in said recess (414A) along said outer plate (428) for dividing said recess into first and second parts, said first part being defined between said inner and outer plates (430, 428) and said second part being defined opposite from said first part with respect to said inner plate (430), wherein said plate-like balancer (432) and said mechanical means (434) are accommodated in said first and second parts, respectively. Spinning reel according to any one of claims 1 to 8, wherein each of said support arms is substantially in the form of a parallelogram. Spinning reel according to any one of claims 1 to 8, wherein each of said support arms is substantially triangular. Spinning reel according to any one of claims 1 to 10, wherein said balancer (107, 108, 306, 306', 432, 444) shifts the center of gravity of said rotor (103, 301, 410) rearwardly.

Inventors: HIRANO KAZUO, SAITO MASAGI, YAMAGUCHI AKIRA, HIRANO, KAZUO, SAITO, MASAGI, YAMAGUCHI, AKIRA, Hirano, Kazuo, c/o Daiwa Seiko, Inc., Saito, Masagi, c/o Daiwa Seiko, Inc., Yamaguchi, Akira, c/o Daiwa Seiko, Inc.
Applicants: DAIWA SEIKO INC, DAIWA SEIKO INC.
Application year: 1993
Main classification: A01K89
IPC codes: A01K89