JP2005218355A - Fishing electric reel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve this structure more compactly on the premise that a reverse rotation of a spool together with a main gear is permitted when an overload is detected during winding in an electric reel employing a one-way clutch.
SOLUTION: In an electric fishing reel in which a main gear and a spool are connected by a one-way clutch, a reverse rotation of the main gear is normally performed at the time of winding a road thread by a forward rotation of a spur wheel provided on the side of the main gear and a motor. The ratchet device is constituted by a detent claw that allows the main gear to reversely rotate when the motor is switched to the reverse rotation, while allowing the reverse rotation of the main gear. The angle between the pair of the two around the rotation axis of the main gear is provided at a position less than 180 degrees. The angle formed by the detent claw is determined by 360 / x × 1/2 + 90 (where x is the number of teeth of the tooth wheel). Further, only one guide groove is formed.
[Selection] Figure 3

Description

  In the fishing electric reel adopting a one-way clutch mechanism, the present invention can control the reverse rotation of the motor at a predetermined timing, such as when an overload is detected during automatic winding operation by the motor. The present invention relates to a structure capable of suitable operation.

  In a fishing electric reel that employs a one-way clutch mechanism, the reverse rotation prevention function of the spool by the one-way clutch is such that the forward rotation torque of the main gear exceeds the reverse rotation torque of the spool by the tensile force during automatic winding by the electric motor. If the two torques rotate in the reverse direction, the take-up speed is forcibly significantly reduced and the load on the motor increases. At this time, the load current applied to the motor increases exponentially, and there is a possibility that the motor will be burned in, or that the control of the electric reel will be hindered by the counter electromotive force due to the reverse rotation of the motor.

  Therefore, the present applicant discloses an electric fishing reel having a structure that allows reverse rotation of the spool together with the main gear when the above-described overload is detected during winding (see Patent Document 1). ).

JP 2003-230338 A

  The electric fishing reel disclosed in Patent Document 1 urges the detent pawl in a direction to mesh with the claw wheel in a normal state while allowing normal rotation of the main gear, and sets the follower pin at the tip of the detent pawl. The main gear is provided with a cam in which two large and small coaxial cams coaxial with each other are communicated by a guide groove. When the main gear is rotated reversely by the reverse rotation of the motor, the driven pin is the guide groove of the cam. And a ratchet device configured to make the detent claw incapable of meshing with the claw wheel against the urging force by orbiting a large circular cam. However, there is no mention of the number of detents and their positions.

  By the way, as for the electric reel for fishing, although it depends on the size of the target prey, etc., generally a small one is easy to use. In this regard, the fishing electric reel disclosed as an embodiment in Patent Document 1 is provided with two detent pawls facing each other at a position of 180 degrees around the rotation axis of the main gear in the ratchet device. It was. This means that the detent pawl is located on the diameter extension of the main gear. For this reason, the installation aspect of such a detent claw takes a width | variety around the main gear, and a reel will be a little large sized.

  Moreover, although it is disclosed by the above-mentioned patent document 1 that a manual handle is provided, this manual handle is structurally rotated in conjunction with the reverse rotation of the motor, and the knob of the manual handle is used by the user. It is preferable to avoid the co-rotation if there is a risk of accidental collision.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide an electric reel that employs a one-way clutch, and when an overload as described above is detected during winding, It is to achieve this structure more compactly on the premise of allowing reverse rotation. In addition, as a second object, a structure is disclosed that can appropriately cancel the co-rotation of the manual handle during reverse rotation.

  In order to achieve the above-described object, the present invention provides a fishing reel provided on the side of a main gear in an electric fishing reel in which a main gear to which power of a motor is transmitted and a spool for winding up a line are connected by a one-way clutch. During the winding operation of the road line by the forward rotation of the motor and the motor, the main gear is engaged with the pawl wheel so that the reverse rotation of the main gear can be locked in the normal state, but when the motor is switched to the reverse rotation, the engagement with the pawl wheel is impossible. A ratchet device is constituted by a detent claw that allows the reverse rotation of the main gear, and the detent claw is located at a position where the angle between the pair of two around the rotation axis of the main gear is less than 180 degrees. The means of providing was used. According to this means, compared with the case where two detent pawls are provided facing each other as in the prior art, both positions can be provided close to each other, and the installation space can be reduced.

The angle formed by the detent claw was obtained by the following formula.
360 / x × 1/2 + 90
However, x is the number of teeth of the tooth wheel. In this means, 360 / x is an interval angle formed by each tooth of the tooth wheel, and is multiplied by ½ to calculate the center position of the tooth. Further, 90 degrees is a minimum angle necessary for opening the detent pawl. That is, the smallest angle required to install the two detent pawls is calculated by this equation.

  Further, the ratchet device urges the detent pawl in a direction to mesh with the pawl wheel in a normal state while allowing the main gear to rotate forward, and provides a follower pin at the tip of the detent pawl. A cam is formed by connecting two large and small circular cams coaxial with each other by a guide groove. When the main gear rotates reversely by reverse rotation of the motor, the driven pin passes through the guide groove of the cam and the large circular cam is The detent claw is configured not to be able to mesh with the claw wheel against the urging force by circling. In addition, only one guide groove is provided.

  Further, the load current of the motor is always detected, and when the current value reaches or exceeds a preset value, the motor is reversely rotated.

  Further, as a means for achieving the second object, a manual handle having a handle shaft connected to the main shaft via a gear or the like is provided, and a second handwheel is provided at the opposite end of the handle shaft on the connection side. In addition, the second ratchet device is constituted by a lock claw that can be switched between meshing and releasing with the handwheel by a manual switch.

  According to the present invention adopting the above-described means, inadvertent reverse rotation during the winding operation is restricted by the ratchet device, and when an overload is detected, the motor is switched to reverse rotation and at the same time by the ratchet device. Since the lock function is released, the winding from the winding of the yarn to the feeding can be performed by motor control. As a result, in addition to the basic effect that the electric reel can be completely automatically controlled, a pair of two Since the angle between the detent pawls is set to be less than 180 degrees, the position of the detent pawls can be closer and the installation space can be reduced compared to the case where the angle is set to 180 degrees. As a result, there is a specific effect that the reel can be miniaturized. In addition, the angle of the detent pawl can be calculated according to the number of teeth of the claw wheel, and if set to an angle according to this, the minimum angle required for installation of the detent pawl is calculated, Engagement and release with the handwheel can be ensured.

  Furthermore, since the unlocking of the ratchet device is mechanically realized by a cam, it is advantageous in terms of durability and cost as compared with the case where it is electrically controlled. In particular, since only one guide groove for unlocking is formed, the structure of the structure is simple and the operation of the detent pawl can be made reliable.

  In addition, since the second ratchet device that can break the linkage with the main shaft is also configured on the manual handle side, even if the manual handle rotates in the delivery direction when overload is detected, the manual handle can rotate together with the main shaft. The electric reel could be avoided, safe and easy to use.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a plan view of a part of an electric reel according to an embodiment of the present invention. In the figure, 1 is an electric motor, 2 is a pinion gear provided on the drive shaft of the electric motor 1, 3a is a reduction gear meshing with the pinion gear, and 4 is a main meshing with the reduction gear 3a via the reduction gears 3b and 3c. The gear 5 is a spool, and the main gear 4 and the spool 5 are connected by a one-way clutch 6. Reference numeral 7 denotes a drag for adjusting the pressure contact force between the clutch plate on the main gear 4 side and the clutch plate on the spool 5 side in the one-way clutch, and 8 denotes a manual handle that enables the spool 5 to be wound up manually. The configuration up to here is no different from the prior art. That is, by driving the electric motor 1 in the forward rotation direction, the power is transmitted to the main gear 4 through the reduction gears 3 a to 3 c, and the spool 5 is linked to the main gear 4 through the one-way clutch 6 and is moved forward. By co-rotating in the rotation direction, the road yarn is wound up by the driving force of the motor 1 as a result. As described above, the one-way clutch 6 is connected to both the main gear 4 and the spool 5 in principle so that the main gear 4 and the spool 5 can rotate together. It has a function to make it.

  The features of the present invention in such a structure will be described. First, in FIG. 1, 9 is a cam provided on one side of the main gear 4 (the side opposite to the one-way clutch 6), and 10 is the main gear. 4 is a ratchet pawl wheel provided on the cam 9 side. The cam 9 and the pawl wheel 10 are provided coaxially and integrally with the main gear 4 and have the shapes shown in FIGS. That is, the cam 9 is formed with an annular groove 9b (small circular cam) on the inner periphery of the donut plate 9a, and further from one place of the groove 9b to the outer periphery 9d (large circular cam) of the donut plate 9a. A guiding groove 9c that communicates is formed. Here, it is also a feature of the present invention that there is one guide groove 9c. And the ratchet mentioned later is switched by the recessed groove 9b and the outer periphery 9d of the donut plate 9a. In this embodiment, a part of the concave groove 9b is inclined in the vicinity of the guide groove 9c. However, this is a problem in molding, and the concave groove 9b may have a uniform depth throughout. Included in the invention. On the other hand, the ratchet wheel 10 is provided with ratchet teeth 10a on the outer periphery thereof, and rotates forward and backward about the rotation shaft 4a.

  On the other hand, the side cover C of the reel is provided with a detent claw 11 that meshes with the ratchet teeth 10a of the ratchet wheel 10 and restricts the reverse rotation of the main gear 4 as shown in FIG. Therefore, the ratchet device is constituted by both 10 and 11. In particular, in the present invention, the detent pawls 11 are provided at two locations, and the angle α formed by both is set to be less than 180 degrees around the rotation shaft 4 a of the main gear 10. This is because by setting the angle in this way, the apparatus can be downsized as compared with the case where the angle is set to 180 degrees.

  Each detent claw 11 is normally biased by a spring 11a so as to mesh with a ratchet tooth 10a of a ratchet wheel 10 provided on a side surface of the main gear 4, and reverse rotation of the main gear 4, i.e., a road line The rotation in the sending direction is restricted. Therefore, even if an excessive tensile force is applied to the road yarn and a reverse rotation torque exceeding the normal rotation torque of the main gear 4 acts on the spool 5, it is possible to reliably prevent the main gear 4 from rotating in the reverse direction. . As a result, inconveniences such as structural damage of various gears due to inadvertent reverse rotation of the main gear 4 and inability to control the motor due to counter electromotive force can be avoided. Further, at this time, the reverse rotation of the spool 5 is prevented, and the road yarn is not unintentionally fed out. The pawl wheel 10 and the detent pawl 11 restrict the rotation only in one direction, and of course, the reverse, that is, the forward rotation (rotation in the winding direction) of the main gear 4 is not restricted at all. It is.

  By the way, the state in which the reverse rotation of the main gear 4 is restricted by the detent pawl 11 of the ratchet device described above is nothing but the reverse rotation torque exceeding the normal rotation torque of the main gear 4 acting on the spool 5. It is not preferable to continue this state. In other words, in this state, the forward rotation of the main gear 4 is also restricted by the reverse rotation torque of the spool 5, and as a result, the load current of the motor 1 increases due to the automatic winding stop or a significant decrease in the winding speed.

  Therefore, in the present embodiment, the overload is electrically monitored based on the load current of the motor 1 and the reverse rotation of the motor 1 is allowed if the overload exceeds a certain level. As a specific means, in the present embodiment, a pin 11b protruding toward the cam 9 is provided at the tip of the detent claw 11, and the movement of the detent claw 11 is controlled by using the pin 11b as a follower. Yes. That is, during the normal winding operation, the pin 11b is positioned in the groove 9b of the cam 9 and circulates around the groove 9b as shown in FIGS. Even if the main gear 4 attempts to reversely rotate due to the torque, the detent pawl 11 is biased to mesh with the ratchet wheel, so that the reverse rotation preventing function of the main gear 4 is also maintained.

  On the other hand, if the winding speed decreases due to an increase in tensile force applied to the yarn, etc., for example, if the load current of the motor 1 exceeds a certain level, this is detected and the motor 1 is rotated backward, that is, the yarn is sent The rotation is automatically switched in the direction to be Then, as shown in FIG. 6, the pin 11b that has been circling the concave groove 9b of the cam 9 until then passes from the concave groove 9b through the guide groove 9c, and further, as shown in FIG. Located on the outer periphery 9d.

  Then, as shown in FIG. 8, the detent pawl 11 resists the urging force of the spring 11a and moves away to a position where it cannot mesh with the pawl wheel 10. During this period, the detent pawl 11 is separated from the pawl wheel 10. The number and interval of ratchet teeth 10a in the ratchet wheel 10 and the position where the guide groove 9c is formed in the cam 9 are determined so as not to mesh.

This point will be described in more detail. The detent pawls 11 and 11 are set to have an angle α of less than 180 degrees as described above, but more preferably set to an angle determined by the following equation.
360 / x × 1/2 + 90
Where x is the number of ratchet teeth 10a of the ratchet wheel 10

  According to this formula, in the case of the present embodiment, the number of ratchet teeth 10a is 8, and therefore the angle formed by the detent pawls 11 and 11 is 112.5 degrees, and this angle is the pawl wheel 10 of the present embodiment. The minimum angle required for installing the detent claw 11 in FIG. That is, when this angle is set, the two detent claws 11 and 11 are linearly closest to each other, so that the reel can be effectively downsized. In FIG. 4, for convenience of explanation, the angle α of the detent pawls 11 and 11 is not set to an angle calculated by the above formula.

  Further, in the present embodiment, the guide groove 9c is formed only at one location. This is because when two guide grooves 9c are provided in accordance with the number of detent pawls 11, it is difficult to set the formation position so as to secure the timing for separating both from the pawl wheel 10 at the same time. Even if the timing can be achieved, when returning from the separated state at the time of reverse rotation to the original position at the time of normal rotation, while both the detent pawls 11 are respectively positioned in the guide grooves 9c, it is slight, This is because a time during which the toothed wheel 10 is not completely engaged occurs and the reverse rotation prevention function does not work during this time. On the other hand, as in this embodiment, by setting the guide groove 9c as one, the formation position can be easily set, and the detent pawl 11 performs the separation operation and the original position return operation with a time difference. In particular, at the time of the return operation from the separated state to the original position, the reverse rotation prevention function is exhibited by the one detent claw 11 first.

  In this way, if an overload exceeding a certain level is applied, the rotation direction of the motor 1 is switched and the main gear 4 is rotated in reverse to release the lock function (reverse rotation prevention function) of the detent pawl 11. The reverse rotation of the main gear 4 is allowed, the rise of the load current applied to the motor 1 is suppressed, and the road yarn is fed out by the automatic control of the motor 1. When the load current of the motor 1 becomes normal, the normal winding operation is performed by switching the motor 1 to forward rotation driving. At this time, the detent pawl 11 prevents the reverse rotation of the main gear 4 while allowing the forward rotation of the main gear 4 by reversibly returning the pin 11b from the guide groove 9c to the original position around the concave groove 9b. is there.

  By the way, as shown in FIG. 9, the manual handle 8 has a main shaft to which the power of the motor 1 is transmitted to rotate the main gear 4 via a second one-way clutch 12 provided at the tip of the handle shaft 8a. 13 is connected. The second one-way clutch 12 incorporates a ratchet mechanism that does not rotate together with the main shaft 13 when winding, but conversely rotates together with the main shaft 13 when delivered. For this reason, at the time of reverse rotation of the motor 1 at the time of overload detection (rotation in the feeding direction of the road yarn), the manual handle 8 rotates in the feeding direction in conjunction with this. Accordingly, there is a possibility that the knob 8b of the manual handle 8 may hit the user. In this embodiment, in order to avoid this, a second ratchet device that allows the manual handle 8 to be in a free state is configured.

  That is, as shown in FIGS. 10 and 11, this second ratchet device is provided with a pawl wheel 14 at the other end of the handle shaft 8a, and provided with a lock claw 16 that is normally engaged with the pawl wheel 14 by a spring 15. Further, a manual slide switch 17 is provided for rotating the lock claw 16 in a direction to release the engagement against the urging force of the spring 15. Reference numeral 18 denotes a ball pin, and 19 denotes a click hole provided in the slide switch 17 in which the ball pin 18 is fitted and held in each state. With this configuration, if the slide switch 17 is operated, the engagement and release of the lock claw 16 and the pawl wheel 14 can be switched. In the engaged state, the winding operation by the manual handle 8 is possible, and in the engaged state, the manual operation is performed manually. Since the handle 8 is in a free state, it does not rotate together inadvertently when the motor 1 rotates backward.

The partially cutaway top view of the electric reel which concerns on one Embodiment of this invention Principal part explanatory view showing the vicinity of the ratchet device in the reel Perspective view of cam on the reel Partially cutaway side view of the reel (locked with a ratchet device) Operational diagram of the reel (corresponding to the state of FIG. 4) Operational diagram of the reel (unlocked state of the ratchet device) Operational diagram of the reel (with the ratchet device fully unlocked) Partially cutaway side view of the reel (corresponding to the state of FIG. 7) Sectional drawing which showed the connection aspect of a manual handle and a main shaft in the reel Operation explanatory diagram of the second ratchet device in the same manual handle (when the manual handle is free) Operation explanatory diagram of the second ratchet device in the manual handle (the state where the manual handle is locked)

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electric motor 2 Pinion gear 3a * 3b * 3c Deceleration gear 4 Main gear 5 Spool 6 One-way clutch 7 Drag 8 Manual handle 9 Cam 10 Nail wheel 11 Detent nail 12 One-way clutch 13 which connects main shaft and handle shaft 13 Main shaft 14 The second wheel 15 in the ratchet device 15 Spring 16 Lock claw 17 Manual slide switch

Claims (6)

In an electric fishing reel in which a main gear to which power of a motor is transmitted and a spool for winding a road line are connected by a one-way clutch, a hook wheel provided on the side of the main gear and winding of the road line by forward rotation of the motor A detent claw that engages with the toothed wheel so that the reverse rotation of the main gear can be locked in a normal state during the removal operation, and allows the reverse rotation of the main gear because it cannot mesh with the toothed wheel when the motor is switched to the reverse rotation. And the detent pawl is provided at a position where the angle between the two pairs is less than 180 degrees with respect to the rotation axis of the main gear. . The fishing reel according to claim 1, wherein the angle formed by the detent claw is obtained by the following equation.
360 / x × 1/2 + 90
Where x is the number of teeth The ratchet device urges the detent pawl in the normal direction to engage with the pawl wheel while allowing normal rotation of the main gear, and has a driven pin at the tip of the detent pawl, which is coaxial with the main gear. The large and small circular cams are connected by a guide groove, and when the main gear rotates reversely due to reverse rotation of the motor, the driven pin circulates through the large circular cam through the cam guide groove. The electric reel for fishing according to claim 1 or 2, wherein the detent claw is configured so as to be unable to mesh with the toothed wheel against the biasing force. The electric reel for fishing according to claim 3, wherein there is only one guide groove. The electric motor for fishing according to any one of claims 1 to 4, wherein a load current of the motor is constantly detected, and the motor is reversely rotated when the current value reaches or exceeds a preset value. reel. A manual handle having a handle shaft connected to the main shaft via a gear or the like is provided, and a second tooth wheel is provided at the opposite end of the handle shaft on the connection side, and the hand wheel is engaged and released by the manual switch. The fishing reel according to any one of claims 1 to 5, wherein the second ratchet device is configured by a lock claw that can be switched.

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