JP2010148452A - Spool to be used in reel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a spool of lightweightness or inexpensiveness as possible as practicable while securing its own rigidity. <P>SOLUTION: The spool incorporated in a reel and functioning to reel fishline is provided, being such that: both ends thereof in the shaft length direction have each a circular part 24 larger in outer diameter than the barrel body 22 between both the ends. The spool includes a spool body 25 made by integratedly molding at least one circular part 24 and the barrel body 22 of a fiber reinforcing resin; wherein the spool body is such that; at least the central part in the shaft length direction of the barrel body 22, in terms of the structure of the barrel body alone, has a high-strength parts P0' and t2 more resistant to crushing-to-flatness than those of any zones biased toward the any ends of the barrel body. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a spool that is incorporated into a spinning reel or a double-bearing reel and winds a fishing line.

In so-called throwing rods, spinning reels are used. For this reason, if the spinning reel is heavy, a large amount of energy is required when throwing the device far away, and the physical strength of the thrower is consumed. Moreover, even if it is not used as a throwing rod, the weight reduction of the spinning reel makes fishing comfortable. Therefore, the spinning reel is required to be lightweight. On the other hand, the spool of the spinning reel is used by winding the fishing line and tends to be crushed by the tightening force of the wound fishing line, and a force of expanding and contracting the fishing line due to a change in environmental temperature can be applied. In addition, a fishing rod equipped with a dual-bearing type reel is frequently operated to throw the device to a desired position, and therefore, there is a high demand for weight reduction as in the spinning reel. The same applies to the fact that a force to be crushed by the tightening force of the wound fishing line can be applied.
Aiming at weight reduction and cost reduction, a conventional metal spool is made of resin by injection molding of a synthetic resin material, or a short reinforcing fiber is added to a synthetic resin as disclosed in Patent Document 1 below. There are those made by injection molding the mixed one and those made by fiber reinforced resin using braided reinforcing fibers.
JP 56-45149 A

However, in the case of resin, it is necessary to make it very thick in order to maintain the rigidity against crushing by the wound fishing line, and the weight reduction is not always sufficient. Further, even the one disclosed in Patent Document 1 merely discloses that the reinforcing fiber is stretched in the axial direction of the spool.
Therefore, a problem to be solved is to provide a spool that is as light as possible or low in cost while ensuring rigidity.

  A first aspect of the present invention is a spool that is incorporated in a reel and winds a fishing line, wherein both end portions in the axial length direction of the spool are annular portions having a large outer diameter with respect to a body portion in a region between the both end portions. And a spool main body part in which at least one annular part and the body part are integrally formed of fiber reinforced resin. The spool body part has at least a central part in the axial direction of the body part. The present invention provides a spool characterized by having a high-strength portion having a higher strength against crushing than any region near the end of the body portion in the structure having only the body portion.

In the second invention, the entire body part of the first invention uses a predetermined synthetic resin, and the kind of reinforcing fiber, the orientation direction, and the weight ratio of the fiber to the total weight of the fiber and the resin In each item, there is no substantial difference in the axial direction position of the body part, and the high-strength part is configured by making the central part in the axial length direction thicker than any of the end-side regions. To do.
As the ratio, a volume ratio may be used instead of the weight ratio. The same applies to the following unless there is a contradiction.

According to a third aspect of the present invention, the entire body part of the first aspect of the invention uses a predetermined synthetic resin, and includes a main body layer extending between both ends of the spool main body in the axial length direction. There is no substantial difference in the axial direction position of the body part in each item of the type of reinforcing fiber, the direction of orientation, the weight ratio of the fiber to the total weight of the fiber and resin, and the wall thickness. In addition to the main body layer, a reinforcing layer that can reinforce against crushing is provided in the central portion, and the high-strength portion is configured so as to be thicker than any of the end-side regions.
In a fourth aspect of the invention, the reinforcing layer of the third aspect of the invention is configured such that the fiber direction is oriented in the circumferential direction.

  According to a fifth aspect of the present invention, the entire body portion of the first invention uses a predetermined synthetic resin, and in each item of the type of reinforcing fiber and the directing direction, the body portion is substantially at the position in the axial length direction. There is no difference, and the weight ratio of the fiber to the total weight of the fiber and the resin in the central portion in the axial length direction is larger than any of the regions near the end, and the wall thickness is substantially in the axial length position of the body portion. The high-strength portion is configured such that there is no difference or the axially central portion is thicker than any of the end regions.

  According to a sixth aspect of the present invention, the entire body part of the first invention uses a predetermined synthetic resin, and there is no substantial difference in the direction of the reinforcing fiber in the axial direction of the body part. The reinforcing fiber at the center of the direction uses fibers with higher elasticity than any of the regions near the end, or the ratio of the high elasticity fibers to the low elasticity fibers is increased, and the wall thickness is determined in the axial direction of the body portion. There is no substantial difference in position, or the high-strength portion is configured by making the central portion in the axial length direction thicker than any of the end regions.

According to a seventh aspect of the present invention, the spool main body of the first to sixth aspects is prepared by preparing a plurality of three or more prepreg sheets and arranging them in the circumferential direction so that both ends of the spool main body in the axial length direction are provided. A body layer extending between the parts is formed.
According to an eighth aspect of the present invention, the high-strength portion according to the seventh aspect is provided in a part of the body portion in the circumferential direction, and the reinforcing portion of the spool including the high-strength portion is disposed between both end portions of the body portion. It is comprised so that it may extend over.

  According to a ninth aspect of the invention, the reinforcing portion according to the eighth aspect of the invention is provided in a plurality of locations dispersed in the circumferential direction of the spool body portion, and the spool body portion includes the prepreg sheets adjacent to each other in the circumferential direction. The reinforcing portion is formed while being partially polymerized, and the reinforcing portion is configured to be the partially overlapping portion.

  In a tenth aspect of the invention, the plurality of prepreg sheets of the seventh to ninth aspects are configured to have the same dimensional shape.

  In the first invention, since both end portions of the spool are annular portions having large outer diameters, the end portions are relatively strong and separated from the end portions even when receiving tightening force from the wound fishing line due to the structure. The central part in the axial direction of the body part is weak. Although it is possible to increase the strength by uniformly increasing the thickness of the body part, or to use uniformly high-strength reinforcing fibers, the former does not necessarily reduce the weight of the spool, and the latter is expensive. There is a case. For this reason, the strength of the body portion is not increased uniformly, but the strength of the central portion in the axial length direction is increased relative to the end region. Therefore, the weight can be reduced as much as possible while the strength is ensured, or the cost can be reduced.

The second invention is one form of the configuration of the high-strength portion, and can be easily formed by polymerizing the prepreg sheet in order to achieve high strength by increasing the thickness.
In 3rd invention, since it is one form of a high intensity | strength part structure and added the reinforcement layer with respect to the main body layer, and has comprised the high intensity | strength part, the freedom degree of selection of the kind of reinforcement layer is high.
In 4th invention, since the circumferential direction oriented reinforcement fiber is used, it is strong with respect to crushing.

5th invention is one form of a high intensity | strength part structure, In order to increase fiber amount and to achieve high intensity | strength, the thickness in the axial length direction of a trunk | drum is made unchanged (fiber density is made high). However, the fifth invention includes the case where the wall thickness changes.
6th invention is one form of a high strength part structure, and in order to achieve high strength by using high elastic fiber, it is possible to make the wall thickness in the axial length direction of the body part unchanged, In the sixth invention, the case of changing is included.

In the seventh invention, since the main body layer is formed by arranging three or more prepreg sheets in the circumferential direction of the spool main body, it becomes easy to form the spool main body including the large-diameter annular portion.
In the eighth aspect of the invention, the reinforcing portion extending between both end portions of the body portion includes a high-strength portion at the center portion, and this reinforcing portion reaches the large-diameter annular portion at the end portion of the spool. The reinforcing portion forms a part of the frame structure, and the spool has high strength. Since the high-strength part is provided in a part in the circumferential direction, it contributes to weight reduction as compared with the case where it is provided over the entire circumference.

In the ninth invention, the reinforcing portions are dispersed in the circumferential direction of the spool main body portion and provided at a plurality of locations, and each reinforcing portion is a superposed portion of the prepreg sheets adjacent in the circumferential direction. The reinforcing part can be formed together when the main spool body is formed, and the spool can be manufactured efficiently and contributes to weight reduction.
In the 10th invention, since the dimensional shape of each prepreg sheet is the same, when arrange | positioning a prepreg sheet | seat in the circumferential direction, it can arrange | position equally.

  Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings. 1 is a side view of a spinning reel using a spool 20 according to the present invention, FIG. 2 is a side view of the spool 20 of FIG. 1, FIG. 3 is a longitudinal sectional view of FIG. 2, and FIG. FIG. 5 is a schematic cross-sectional view taken along line EE in FIG. The spinning reel SP is used with the reel leg 10 mounted on a fishing rod. A handle (not shown) is rotated to rotate the rotor 12. A bail 16 is attached to the rotor 12 via a bail arm 14, and a fishing line is wound around the body portion 22 of the spool 20 through the bale while the rotor is rotating.

  The spool 20 has a front thin truncated cone-shaped body portion 22 having an inclination angle of about 5 degrees (about 3 to 8 degrees) shown in FIG. 2 and a suddenly changing portion whose diameter is increased stepwise at the rear end portion. It has the side annular part 24 and the front side annular part 26 whose diameter is larger than that of the body part at the front end part. In this embodiment, the front annular portion 26 is integrally formed as an outer peripheral portion of a connecting portion 28 that forms a rim structure, and is formed of metal together with the connecting portion. In this embodiment, the body portion 22 and the rear annular portion 24 are integrally formed of fiber reinforced resin to form the spool body portion 25. The spool main body portion has a structure in which the inner periphery of the front end portion is received by a step portion 28D provided at the rear end portion of the front annular portion 26 of the metal connecting portion 28, and this portion is joined by adhesive fixing or the like. The part and the connecting part are configured to move together.

  The connecting portion may be made of fiber reinforced resin or the like in addition to metal. Further, the front annular portion 26 may be formed integrally with the spool main body portion by separating the connecting portion from the connection portion with fiber reinforced resin.In this case, the inner circumference of the front annular portion 26 which is a part of the spool main body portion is It becomes a structure received by the outer periphery of a connection part. The connecting portion 28 is connected to the spool shaft 30 at the center thereof, and the spool 20 is moved back and forth by moving the spool shaft back and forth, that is, the integrated body of the spool body portion 25 and the connecting portion 28.

  8 and 9 will be described later in detail, but both FIGS. 8 and 9 will be referred to. The main body layer 22H extending over the entire length in the axial direction of the body portion 22 extends over the entire length in the axial direction of the spool main body portion 25 in this embodiment, but as can be seen from FIG. The overlapped portions J that are thickened by polymerization are dispersed at equal angular intervals in the circumferential direction. That is, the main body layer 22H of the body portion, that is, the main body layer of the spool main body portion is not uniform in thickness but is partially thickened in the circumferential direction.

  As is apparent from the above description, the spool 20 has the front and rear end portions of the spool and the vicinity of the front and rear end portions of the body portion 22 due to the presence of the connecting portion 28 including the rear annular portion 24 and the front annular portion. Is structurally high strength. Relatively speaking, the structurally weak portion is the central portion of the trunk portion in the axial length direction (here, the front-rear direction). Therefore, if the reinforcing portion is configured to include at least the central portion and the body portion or the spool body portion is reinforced, the spool has high strength. In that case, in order to reduce the weight as much as possible, the spool body is reinforced by partial thickening in the circumferential direction. In this embodiment, the overlapping portion J, which is a thick wall portion, is formed from the front end portion in the axial length direction of the spool body portion to the rear end portion. It is connected with the front and rear ends. For this reason, the entire spool has a very strong structure. Moreover, although the superposition | polymerization part here follows a generatrix and the superposition | polymerization part is equiangular intervals in the circumferential direction, the superposition | polymerization part does not need to be equiangular intervals in the circumferential direction.

  In the above description, the spool is reinforced by partial thickening in the circumferential direction called a superposition part. However, in addition to this, a high-strength reinforcing fiber is used for the part to be reinforced, or the amount of the reinforcing fiber is increased. Reinforcement is also possible by means of Further, as described in FIG. 14 to be described later, a narrower prepreg sheet (tape-like prepreg) may be disposed in the overlapping portion provided at a predetermined position in the circumferential direction. This tape-shaped prepreg may be separately provided without providing a superposition part. In addition, a reinforcing wire such as a metal wire such as stainless steel or superelastic metal may be provided along the axial length direction (exactly the busbar direction) or the tilt direction. In these cases as well, by partially performing in the circumferential direction, it is possible to contribute to cost reduction and weight reduction.

  In the spool main body portion, the rear annular portion and the body portion are continuous through the step portion, and the front portion of the body portion 22 has a large slanting rate. Therefore, it is generally difficult to form the main body layer of the spool main body portion 25 with one continuous prepreg sheet in the circumferential direction as in the case of fishing rod forming of a fishing rod. For this reason, a plurality of prepreg sheets divided into three or more in the circumferential direction are used. In this example, there are 8 divisions, and the divided prepreg sheets for forming the main body layer in this example are not only dimensional and shape but also the types of matrix resin and fibers and the directing direction in comparison between the circumferential arrangements. In addition, the combined structure of the prepreg sheets is substantially the same.

  6 is a diagram illustrating only the first layer of FIG. 5, FIG. 7 is a diagram further illustrating FIG. 6, and FIG. 8 is a diagram showing three types of base layers for the main body layer used in the spool body. It is a figure which shows the prepreg sheet | seat P0 for reinforcing the shape prepreg sheet | seat P1, P2, P3 and the axial direction direction center part of a trunk | drum part. The prepreg sheets P1, P2, and P3 have substantially the same size and shape. The prepreg sheet P1 of FIG. 8 is used for the first layer in FIG. 5, which is a cross-sectional view of the main body layer, the sheet P2 is used for the second layer, and the sheet P3 is used for the third layer. However, in the present application, in addition to the main body layer, an alignment prepreg sheet P0 of reinforcing fibers (carbon fibers) is disposed in the central portion in the axial direction of the body portion 22. The direction of the reinforcing fibers of the prepreg sheet P0 is the circumferential direction of the body portion.

  The synthetic resin used for each of the prepreg sheets is an epoxy resin, the reinforcing fibers are glass fibers as the backing of the sheets P1 and P2, and the other are carbon fibers. The prepreg sheet P0 is appropriately wound one or more times at a predetermined position on the surface of the core metal (not shown). Next, the winding of the prepreg sheet P1 as the first layer of the main body layer is performed by stacking the first prepreg sheet P1-1 so that the wound prepreg sheet P0 is positioned at the center of the body part, The second prepreg sheet P1-2 is placed on the sheet P1-1 while polymerizing a part of the circumferential width, and the remaining prepreg sheets P1-3, 4, 5, 6, 7 are also placed. Similarly, it is placed while partially polymerizing. The final prepreg sheet P1-8 is placed on the remaining core metal surface while being partially polymerized from the outside with the prepreg sheets P1-1 and P1-7. Therefore, manufacture becomes very easy. The width of these overlapping portions J is 10% or more, preferably 20% or more of the width of each prepreg sheet.

  In FIGS. 6 and 7, (8-2) sheets up to the prepreg sheets P1-2 to P-7 have a bent portion bent in a direction including the radial direction component, in fact, an oblique direction, at a position outside the overlapping portion J. Each of the prepreg sheets has a different radial position between the overlapping portion and the non-overlapping portion with respect to the prepreg sheet on one side in the circumferential direction. The prepreg sheet P1-8 also has a bent portion and a different radial position, although the form is different. Only the first prepreg sheet P1-1 does not have a bent portion.

  In this embodiment, each prepreg sheet in the second layer and the third layer of the main body is placed at the same angular position as each corresponding prepreg sheet in the first layer, and the prepreg sheets adjacent to each other in the circumferential direction. The polymerization relationship is the same as that of the first layer, and the second and third layers are formed. Therefore, this is an arrangement form of the prepreg sheet in which the overlapping portion J is most thickened. After the required number of layers is formed in this way, it is fastened from the outer periphery with a fastening tape and is heat-molded according to a conventional method.

The prepreg sheet used in this embodiment will be described. FIG. 8A shows a carbon fiber assembling sheet. (B) is a drawing sheet B1 in which carbon fibers as reinforcing fibers are oriented in a 45-degree direction with respect to the longitudinal direction of the sheet on a glass fiber scrim sheet S, and is oriented in a -45-degree direction symmetrical thereto. The assembling sheet B2 is overlapped to constitute the bias sheet P1. The fiber orientation direction angle of ± 45 degrees is an example, and the fiber may be inclined at other angles. In this embodiment, (c) is the same as (b), but the elastic modulus and the like of the carbon fibers may be different. (D) is a cross-woven cloth, and considers aesthetics because it is the outermost layer. As described above, the synthetic resin used in these sheets is an epoxy resin.
The number of main body layers of the spool main body may be any number other than three. Further, the prepreg sheet to be used may be a woven fabric such as a biaxial plain weave or a triaxial woven fabric in addition to the form shown in FIG.

  FIG. 9 is a vertical cross-sectional view of the spool body 25 formed by the above-described manufacturing method. The first layer P1 'of the main body layer 22H is formed of a prepreg sheet P1, the second layer P2' is formed of a prepreg sheet P2, and the third layer P3 'is formed of a prepreg sheet P3. Further, a crush-resistant reinforcing layer P <b> 0 ′ is formed on the inner side of the first layer at the central portion in the axial direction of the body portion 22. This layer is strong against crushing because the reinforcing fibers are circumferentially oriented. The maximum thickness t2 of the reinforcing layer is thicker than the maximum thicknesses t1 and t3 in the regions near the ends of the body portion. FIG. 9 shows a longitudinal sectional view at a circumferential position away from the overlapping portion J, but the same applies to the longitudinal section at the overlapping portion position. The maximum thickness t2 of the portion is formed to be thicker than the maximum thicknesses t1 and t3 of the regions near the ends.

  In the form shown in FIG. 9, the central portion of the body portion is thickened, but FIG. 10 shows a prepreg sheet structure for a spool body portion that is crushed and reinforced without thickening the central portion. Show. The prepreg sheets P4, P5 and P6 are prepared corresponding to the prepreg sheets P1, P2 and P3 in FIG. 8, and there is no prepreg sheet corresponding to the prepreg sheet P0 in FIG. Therefore, the spool body portion is constituted only by the body layer referred to in the present application.

  The sheet P4 is the same as the assembling sheet B1 in FIG. 8 and the assembling sheet B2 oriented in the inclined direction symmetrical to this, and constitutes a bias sheet, and only the backing sheet is different. In the backing sheet portion at the center in the longitudinal direction of the sheet P4, a substantially rectangular draw sheet S2 in which carbon fibers having higher elasticity than glass fibers are oriented in the transverse direction perpendicular to the longitudinal direction is disposed. The substantially rectangular backing sheet portions S1 and S1 on both sides are the same as the glass fiber scrim sheet S in FIG. 8, and the fibers are oriented in the longitudinal direction and the lateral direction, respectively. The first layer in FIG. 6 is configured by using an appropriate number of three or more sheets P4, here eight sheets. The second layer uses the prepreg sheet P5, and the third layer uses the prepreg sheet P6 and has the same structure as shown in FIG. The sheet P5 is the same as the sheet P4, and the sheet P6 is the same as the sheet P3 in FIG. In the spool main body formed in this way, the central portion in the axial direction of the body portion is more resistant to crushing because of the presence of reinforcing fibers (carbon fibers) oriented in the circumferential direction than the region near the end in the axial length direction.

Instead of using the sheet of FIG. 10, the sheet portions S1 and S1 of the sheets P4 and P5 may be aligned sheet portions of reinforcing fibers (carbon fibers) in the same direction as the sheet portion S2. In this case, using the carbon fiber having the same elastic modulus, the fiber density of the sheet portion S2 in the central portion is increased, or the elastic modulus of the carbon fiber in the central sheet portion S2 is relatively increased while increasing or decreasing the fiber density. For example, the crush resistance of the central portion can be improved by increasing the height. However, it is preferable that the elastic modulus is not an extremely high carbon fiber (elastic modulus is 65 × 9.8 × 10 ³ N / mm ² or less).

  As a modified example of the sheet polymerization form of the main body layer of each of the above embodiments, there is a polymerization form shown in FIG. In this embodiment, the polymerization relationship between the first prepreg sheet P1-1 'and the last prepreg sheet P1-8' is different from the polymerization relationship of FIG. 7, but the other is the same polymerization relationship. As in the case of FIG. 7, when seven prepreg sheets are sequentially arranged and the last prepreg sheet P1-8 ′ is arranged, a part of the prepreg sheet P1-8 ′ is used as the first prepreg sheet P1. The workability is slightly inferior because it is embedded inside -1 '. However, this structure is a form having rotational symmetry, and even if the second layer and the third layer are disposed in the same manner, a spool body portion having a uniform shape can be formed. All the prepreg sheets have the aforementioned bent portion.

  In the superposition | polymerization form of (b) of FIG. 11, on the surface of a metal core, first, four prepreg sheets P1-1, 3, 5, and 7 are mounted at the same space | interval, and after that, each of these prepreg sheets. Between the other four prepreg sheets P1-2, 4, 6, and 8 on the surface of the core metal between them, both circumferential sides of the prepreg sheets P1-1, 3, 5, and 7 have the same polymerization relationship. So go on. Even in this configuration, not only rotational symmetry but also symmetry with respect to the radial axis passing through the center of the spool body, even if the second layer and the third layer are disposed in the same manner, A spool body can be formed. Only the half of the four prepreg sheets P1-2, 4, 6, and 8 have the above-described bent portion.

  In the above, a truncated cone-shaped core metal is used as the core metal, and the protruding direction of the overlapping portion J is provided on the outer peripheral side of the spool, but FIG. 12 illustrates the spool main body portion provided with the protruding direction of the overlapping portion on the inner side. It is an example of a cross-sectional view. In this example, the spool body is formed of four prepreg sheets P. As this manufacturing method, as shown in FIG. 13, the flat part 40H along a longitudinal direction is provided in the outer periphery of the metal core 40 equally in four places at intervals of 90 degrees. A prepreg sheet P is arranged on the surface of the core metal in the same polymerization arrangement form as in FIG. When pressure is applied from above with a tightening tape and heat molding is performed, molding is performed as shown in FIG.

  FIG. 14 shows a case in which the overlapping portion J between adjacent prepreg sheets P and P is further reinforced, for example, simply a long and narrow prepreg sheet KP or a reinforcing fiber such as a carbon fiber having high strength or high elastic modulus between them. It is shown that a long and narrow prepreg sheet KP may be disposed and pressure-heat-molded together. In addition, when the prepreg sheet P is manufactured, reinforcing fibers such as carbon fibers having a high strength or a high elastic modulus are disposed in a region where the sheet P is to be polymerized, or more than other regions. Of course, reinforcing fibers (and / or high density) may be disposed. In this way, if the reinforcing portion is provided at a predetermined position in the width direction (circumferential direction) in each prepreg sheet, the circumferential direction of the spool (spool main body portion) can be obtained without overlapping adjacent prepreg sheets. Reinforcing portions can be dispersedly arranged at predetermined positions. Furthermore, it is possible to use a combination of reinforcing fibers such as carbon fibers having a high strength or a high elastic modulus, or increasing the amount of reinforcing fibers at a specific portion of the prepreg sheet.

  In the case of a multi-layer structure as in the example shown in FIG. 5 described above, the overlapping portions of all layers are not set at the same circumferential position, but, for example, the overlapping portion of the first layer and the second layer A structure may be adopted in which the circumferential position of the overlapping portion is shifted. Further, the prepreg sheets in each layer may not be the same but may be different.

The spool body described above has a reinforcing portion oriented in the direction of the bus body of the spool main body portion or in an inclination direction with respect to the bus bar, and has the reinforcing portion while reinforcing against collapse due to contraction of the wound fishing line. As mentioned above, a reinforcing layer is provided at the center part in the front-rear direction of the body part that is particularly prone to crushing. The reinforcing layer is the reinforcing layer P0 ′ in FIG. 9 or the portion where the sheet S2 in FIG. 10 is present.
The direction in which the reinforcing fibers of the reinforcing layer are directed may be an inclined direction instead of a circumferential direction. For example, a bias sheet may be used. Further, the reinforcing fiber may be wound by filament winding instead of reinforcement by the prepreg sheet. This is not limited to the central part of the body part, but may be used as an inner layer or an outer layer of the spool main body part. Increase crush resistance.

  Further, in the spool body portion 25 in the above example, the body portion 22 and the rear annular portion 24 are integrated, or the front annular portion 26 is integrated with this. And the front annular portion may be integrated, and the rear annular portion may be a separate part. However, when the spool main body portion is combined with the rear annular portion and configured as a spool, the front and rear end portions of the spool are structurally stronger than the body portion (the inclination angle is 45 °). If the structure has a sudden change part or more or a structure such as a rib or a frame), the structure in which these are connected to a reinforcing part such as a superposed part has a very strong structure.

  In the case of a dual-bearing reel spool, the body part extends in the left-right direction instead of the front-rear direction, and one end side of the body part does not become thin, but has a substantially constant outer diameter, Others are the same as described in the spinning reel spool. This will be briefly described with reference to FIG. This type of spool 20 'is a spool body portion in which annular portions 24' and 26 'at both ends in the axial length direction and a body portion 22' between them are integrally formed of fiber reinforced resin. It is preferable that both the left and right annular portions have a sudden change portion that rises from the body surface with a steep inclination of 45 degrees or more. Since the arrangement form of the prepreg sheet is the same as that of the spool body of the spinning reel, the description thereof is omitted, but the core bar used for molding is configured to be separable into two on the left and right.

  In the above configuration, the volume ratio of the reinforcing fibers in the high strength part is preferably 50% or more. In particular, in the reinforcing layer P0 ', the volume ratio of the reinforcing fibers is preferably 50% or more.

  INDUSTRIAL APPLICABILITY The present invention can be used for a spool used for a spinning reel or a double bearing type reel.

FIG. 1 is a side view of a spinning reel using a spool according to the present invention. FIG. 2 is a side view of the spool of FIG. FIG. 3 is a longitudinal sectional view of the spool of FIG. FIG. 4 is a front view taken along line D of FIG. FIG. 5 is a schematic cross-sectional view taken along line EE in FIG. FIG. 6 is a diagram illustrating only the first layer of FIG. FIG. 7 is a schematic diagram of FIG. FIG. 8 is a configuration diagram of a prepreg sheet used in the spool body. FIG. 9 is a longitudinal sectional view of the spool body. FIG. 10 is a configuration diagram of a prepreg sheet for another form spool body. FIG. 11 is a schematic diagram showing a modified example of the arrangement of prepreg sheets. FIG. 12 is a cross-sectional view of another embodiment of the spool according to the present invention. FIG. 13 is an explanatory diagram of the manufacturing method of the spool of FIG. FIG. 14 is a view showing another embodiment of the method for manufacturing the reinforcing portion of the spool according to the present invention. FIG. 15 is a schematic longitudinal sectional view of a spool of a double bearing type reel.

Explanation of symbols

20 spool 22 body part 24 rear annular part 25 spool body part 26 front annular part 28 connecting part 30 spool shaft J superposition part

Claims (10)

A spool which is incorporated in a reel and winds a fishing line, and both axial end portions of the spool have an annular portion having a large outer diameter with respect to a body portion in a region between the both ends. It has a spool main body part in which one annular part and the body part are integrally formed of fiber reinforced resin,
The spool body includes a high-strength portion having at least a central portion in the axial length direction of the body portion that has a higher strength against crushing than a region closer to any end of the body portion in a structure having only the body portion. A spool characterized by   The entire body portion uses a predetermined synthetic resin, and in each of the items of the type of reinforcing fiber, the direction of orientation, and the weight ratio of the fiber to the total weight of the fiber and the resin, the axial direction of the body portion, respectively. 2. The spool according to claim 1, wherein there is no substantial difference in position, and the high-strength portion is configured by making the central portion in the axial length direction thicker than any of the end-side regions.   The entire body portion uses a predetermined synthetic resin, and includes a body layer extending between both ends of the spool body portion in the axial length direction. In the body layer, the type of reinforcing fiber, the direction of orientation, the fiber and There is no substantial difference in the axial length direction position of the body part in each of the weight ratio of the fiber to the total weight of the resin and the wall thickness, and the central part in the axial length direction, in addition to the main body layer 2. The spool according to claim 1, wherein the high-strength portion is formed by providing a reinforcing layer capable of reinforcing against crushing so as to be thicker than any of the end-side regions.   The spool according to claim 3, wherein the reinforcing layer has a fiber direction oriented in a circumferential direction.   The entire body portion uses a predetermined synthetic resin, and there is no substantial difference in the axial length direction position of the body portion in each item of the type of reinforcing fiber and the directing direction, in the central portion in the axial length direction. The weight ratio of the fiber to the total weight of the fiber and the resin is greater than any of the end regions, and there is no substantial difference in the axial direction position of the body portion with respect to the thickness, or the axial direction The spool according to claim 1, wherein the high-strength portion is configured by making a center portion thicker than any of the end-side regions.   The entire body portion uses a predetermined synthetic resin, and there is no substantial difference in the axial direction position of the body portion in the direction of the reinforcing fiber, and the reinforcing fiber at the center portion in the axial direction is at any end. The use of fibers with higher elasticity than the region close to the area, or the ratio of the high elasticity fibers to the low elasticity fibers is increased, and there is no substantial difference in the axial length direction position of the body part with respect to the wall thickness, or The spool according to claim 1, wherein the high-strength portion is configured such that a central portion in the axial length direction is thicker than any of the end-side regions.   The spool main body includes a plurality of prepreg sheets of three or more, and is arranged in a circumferential direction so as to form a main body layer between both axial length direction end portions of the spool main body. Item 7. The spool according to any one of Items 1 to 6.   The high-strength portion is provided in a part of a circumferential direction of the body portion, and a reinforcing portion of a spool including the high-strength portion extends between both end portions of the body portion. spool.   The reinforcing portions are distributed in the circumferential direction of the spool body and are provided at a plurality of locations, and the body layer of the spool body is formed by partially overlapping the prepreg sheets adjacent in the circumferential direction. The spool according to claim 8, wherein the reinforcing portion is the partially overlapped portion.   The spool according to any one of claims 7 to 9, wherein the plurality of prepreg sheets have the same size and shape.

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