TWM580870U - Speed changing mechanism for drum type reel - Google Patents

Abstract

The present invention relates to a shifting mechanism of a drum reel comprising a toothed disc shaft, a first sprocket having a first perforation for the sprocket shaft to pass through, a second sprocket parallel to the first sprocket and having a first The second through hole is provided for the gear shaft to pass through, a shift lever, a pin member, and a first elastic member are disposed on the shift lever, wherein the toothed disc shaft has a shaft hole and two slots, and the shift lever extends into the shaft hole of the toothed shaft The shifting lever is provided with two long holes and can be axially displaced with respect to the shaft of the toothed disc. The pin member passes through the slot and the long hole, and the first elastic member abuts against the pin member. When the pin member protrudes into the first through hole, the first A toothed disc is driven by the chainring shaft, and when the pin member projects into the second perforation, the second chainring is driven by the chainring shaft. Thereby, the shifting mechanism of the drum reel can make the pin positioning accurate, the shifting operation smooth, and the assembly is easy and the product stability can be improved.

Description

Drum reel shifting mechanism

This creation relates to a drum reel, and in particular to a shifting mechanism for a drum reel.

The shifting mechanism of the conventional drum reel, such as the TW 419945 patent, includes a toothed disc shaft 30, a first sprocket 31 is sleeved on the outer peripheral side of the spur shaft 30 and transmits a higher rotational speed, and a second spur 32 is placed over A lower rotational speed is transmitted on the outer peripheral side of the spur shaft 30, a shift lever (pressing pin) 40 is disposed in the spur shaft 30, and a pin head 42 is disposed at the end of the shift lever 40 by a spring 41. A pin (button) 45 extends through the pin head 42 and is engageable with the first chainring 31 or the second chainring 32. Thereby, when the pin member 45 is inserted into one of the first toothed disc 31 or the second toothed disc 32, the user can perform the retracting line operation at a high rotation speed or a low rotation speed state, that is, the user wants to switch the reel At the time of the rotation speed, the shifting can be performed by adjusting the relative position of the pin member 45.

However, at the time of manufacture, the length of the spring 41 connecting the shift lever (press pin) 40 and the pin head 42 is not easily controlled, and the pin member (key button) 45 is not positioned accurately if a slight error occurs, and is assembled, regardless of the assembly. The spring 45 is connected to the shift lever (pressing pin) 40 and the pin head 42 by screwing or other fixing means, and the position of the pin head 42 is easily deviated or even skewed due to tolerances in the manufacturing process, thereby causing the pin member (button) 45. Can not be correctly positioned, which will make the shifting action wrong or not smooth, if you want to control the quality uniformity will greatly increase the manufacturing cost. Therefore, how to avoid the above-mentioned shortcomings has become a goal of the industry.

One of the aims of the present invention is to provide a shifting mechanism of a drum reel, which can ensure the positioning of the pin and the shifting action smoothly. Another object of the present invention is to provide a shifting mechanism of the drum reel, which is easy to assemble and stable in product. High performance and reduced manufacturing costs.

In order to achieve the above object, the shifting mechanism of the drum reel of the present invention comprises a toothed disc shaft rotatable about an axis, a first toothed disc having a first perforation for the chissor shaft to pass through, and a second chainring Is parallel to the first toothed disc and has a second perforation for the sprocket shaft to pass through, a shifting lever, a pin member, and a first elastic member, wherein the sprocket shaft has a shaft hole and two slots Connecting the shaft hole, the shifting rod extends into the shaft hole of the sprocket shaft, the shifting lever is provided with a chamber and two long holes communicating with the chamber, and the shifting lever is opposite to the sprocket shaft in a first position An axial displacement between the second position, the pin passing through the two slots of the sprocket shaft and the two slots of the shifting lever, the pin being movable along the axis relative to the sprocket shaft and the shifting lever Moving, the first elastic member is disposed in the chamber of the shift lever and abuts against the pin member, thereby, when the shift lever is in the first position, the pin member extends into the first through hole, so that the The first toothed disc is driven by the toothed disc shaft, and when the shifting lever is in the second position, the pin member extends into the second through hole, The second tooth of the toothed disc by the disc drive shaft rotation. With the above configuration, the shifting mechanism of the drum reel can make the pin positioning accurate, the shifting operation smooth, and the assembly thereof is easy, and the product stability and the manufacturing cost can be improved.

The technical content and features of the present invention are described in detail below with reference to a preferred embodiment, as shown in Figures 1 and 2, which are perspective views of a drum reel 1 provided by a preferred embodiment of the present invention. In the exploded view of the shifting mechanism 7, the drum reel 1 includes a main body 2, a side cover 3 is fixed on one side of the main body 2, a reel 4 is rotatably disposed in the main body 2, and a rocker arm 5 The side cover 3 is rotatably disposed, and a transmission unit 6 is disposed on the side cover 3 and connected to the reel 4, whereby the rotation of the rocker arm 5 can be transmitted to the reel 4 through the transmission unit 6. The rotation of the reel 4 can be driven when the user rotates the rocker arm 5. The transmission unit 6 has a shifting mechanism 7, and the shifting mechanism 7 can be switched to transmit the rocker arm in the high speed mode or the low speed mode. 5, the shifting mechanism 7 includes a toothed disc shaft 10, a first toothed disc 20, a second toothed disc 30, a shifting lever 40, a pin member 50, a first elastic member 60, and a second Elastic member 65.

The sprocket shaft 10 is rotatably disposed around the axial center L of the side cover 3, the sprocket shaft 10 has a tube portion 11, a shaft hole 12 extending through the tube portion 11 in the direction of the axis L, and two opposite The slot 14 is provided to extend radially through the tube portion 11. As shown in FIG. 3, the shaft hole 12 has a shoulder portion 13 adjacent to the slot hole 14, and the shoulder portion 13 is defined by the inner diameter of the tube portion 11. The two slots 14 are formed in a long rectangular shape and communicate with the shaft hole 12. The extending direction of the two slots 14 is parallel to the axis L. One end of the sprocket shaft 10 has an internal thread portion 15 for screwing with a bolt 18 having an external thread portion 16 for screwing with a screw hole 51 at one end of the rocker arm 5. The rocker arm 5 is constrained by the bolt 18 to be coupled with the toothed disc shaft 10, and the rocker arm 5, the toothed disc shaft 10, and the bolt 18 are synchronously opposite to the side cover 3 about the axis L. Rotating, but not moving relative to the side cover 3 along the axis L.

It should be noted that, in this embodiment, both ends of the shaft hole 12 are open, and the shaft hole 12 has a large diameter section 121 and a small diameter section 122, and the shoulder 13 is located at the large In the other embodiments, the shaft hole 12 is closed from one end of the rocker arm 5. The diameter of the shaft hole 12 can be fixed, and the shoulder 13 is composed of The inner edge of the tube portion 11 extends radially inward and is annular; alternatively, the shoulder portion 13 may be formed by a buckle that is embedded in the inner edge of the shaft hole 12.

The first sprocket 20 has a first through hole 22 in the center for the sprocket shaft 10 to pass through, and the first sprocket 20 has a plurality of convex teeth on the periphery thereof, and the first through hole 22 has a first groove of four sides separated by 90 inches. 24, and the first of the first recessed grooves 24 of 180 相 apart form a pair.

The second spur 30 is parallel to the first spur 20 and has a second through hole 32 for the spur shaft 10 to pass through. The second spur 30 is smaller in diameter than the first spur 20, the second The number of convex teeth on the periphery of the toothed disc 30 is also smaller than the number of convex teeth of the first toothed disc 20, and the second through hole 32 has a second recessed groove 34 which is separated by 90 turns, and two second embedded grooves 34 which are separated by 180 turns. a pair. A gasket 31 is disposed between the first sprocket 20 and the second spur 30 to prevent the first sprocket 20 from contacting the second spur 30.

The shifting lever 40 extends into the shaft hole 12 of the spur shaft 10, and one end of the shifting lever 40 passes through a hole 19 in one of the bolts 18 and is connected with a push button 8 which is opposite to the tooth The disc shaft 10 is axially displaced (i.e., parallel to the axis L) between a first position P1 (shown in Figure 3) and a second position P2 (shown in Figure 4). The shifting lever 40 is provided with a chamber 42 , a radially outwardly extending flange 43 , and two oppositely disposed elongated holes 44 communicating with the chamber 42 . The chamber 42 is recessed by the other end of the shifting lever 40 . The flange 43 is formed in the middle of the shifting lever 40. The extending direction of the elongated hole 44 is parallel to the axis L. The chamber 42 has a bottom portion 45 at one end and an opening 46 at the other end.

The pin member 50 passes through the two slots 14 of the spur shaft 10 and the two elongated holes 44 of the shifting lever 40. The two ends of the pin member 50 extend out of the tube portion 11 of the spur shaft 10, the pin The member 50 is movable along the axis L relative to the spur shaft 10 and the shift lever 40.

The first elastic member 60 is a compression spring. The first elastic member 60 is disposed on the chamber 42 of the shifting lever 40 and is respectively abutted against the bottom portion 45 of the chamber 42 and the pin member 50. When the pin 50 is not subjected to other external force, it is pushed to the opening 46 and abuts against one end of the two long holes 44.

Thereby, when the shift lever 40 is located at the first position P1, as shown in FIG. 3, the pin member 50 extends into the pair of the first through slots 24 of the first through hole 22, so that the first A toothed disc 20 is slidable by the spur shaft 10, and when the shift lever 40 is at the second position P2, as shown in FIG. 4, the pin member 50 extends into the pair of the second through holes 32. In the second recess 34, the second chainring 30 can be driven by the chainring shaft 10. The range in which the pin 50 is movable is limited by the length of the slot 14, and the pin 50 prevents the shift lever 40 from being disengaged from the chain gear shaft 10.

The second elastic member 65 is a compression spring. The second elastic member 65 is sleeved on the shifting lever 40 and located between the shoulder 13 of the shaft hole 12 of the spur shaft 10 and the flange 43 of the shift lever 40. The second elastic member 65 is respectively abutted against the shoulder portion 13 and the flange 43 at the two ends thereof, so that the shift lever 40 is pushed by the second elastic member 65 to the side cover 3 when the shift lever 40 is not subjected to other external force. Externally, until the flange 43 abuts against one end of the bolt 18, the shift lever 40 is located at the first position P1. In other embodiments, the flange 43 can be formed by a buckle that is embedded in the outer edge of the shift lever 40.

It should be noted that, as shown in FIG. 4, the reel 1 further includes a buckle 9 disposed on an outer side of the bolt 18, and the shift lever 40 is provided with a first step 48 adjacent to the pressure twister 8 when the shift lever is When the second position P2 is located, the buckle 9 can be radially clamped and abutted against the step 48, so that the shift lever 40 does not return to the first position due to the return elastic force of the second elastic member 65. P1. In addition, the buckle 9 has an outer end 91 that can be moved by the user. The user can remove the outer end 91 to release the limit of the shifting lever 40, and the second elastic The return spring of the member 65 causes the shift lever 40 to return from the second position P2 to the first position P1 as shown in FIG.

With the above structure, when the shift lever 40 is located at the first position P1, as shown in FIG. 3, the pin member 50 extends into the two first fitting grooves 24 of the first through hole 22, and the user rotates the The rocker arm 5 can drive the first toothed disc 20 to rotate, so that the transmission unit 6 drives the reel 4 to rotate in a high speed mode. When the user wants to shift the speed, pressing the push button 8 and pushing the shift lever 40 from the first position P1 to the second position P2 against the elastic force of the second elastic member 65, as shown in FIG. 4, The pin member 50 extends into the second second groove 34 of the second through hole 32. When the user rotates the rocker arm 5, the second toothed plate 30 can be rotated to drive the transmission unit 6 to drive the line in a low speed mode. Wheel 4 rotates. When the user wants to change back to the high speed mode, it is only necessary to flick the outer end 91 of the buckle 9. It should be noted that, during the movement of the shifting lever 40 from the first position P1 to the second position P2, the first elastic member 60 continues while the pin member 50 has not actually protruded into the second fitting groove 34. Pushing the pin member 50 to the second chainring 30. Once the pin member 50 is aligned with the second slot 34, the pin member 50 can extend into the second slot 34, as shown in FIG. In contrast, during the movement of the shift lever 40 from the second position P2 to the first position P1, the second elastic member 65 continues while the pin member 50 has not actually protruded into the first fitting groove 24. The shifting lever 40 is pushed to the first position P1. Once the pin 50 is aligned with the first slot 24, the shifting lever 40 can pull the pin 50 into the first slot 24. in. Since the pin member 50 is restrained in the two long holes 44 of the shift lever 40 and is pushed by the first elastic member 60, the positioning thereof is true, and the manufacturing of the first elastic member 60 is not caused by the size of the first elastic member 60. It is difficult to control and the position of the pin member 50 is deviated, so that the shifting operation of the shifting mechanism 7 of the present invention can be smoothly performed. Furthermore, the shifting mechanism 7 of the present invention is easy to assemble, and the product stability and manufacturing cost can be improved to achieve The purpose of this creation.

The above description is only for the description of the present embodiment, and may not be used to limit the scope of the patent of the present invention. For example, the diameter or the number of teeth of the first and second toothed discs 20, 30 may be interchanged; or the first and second slots 24 may be used. The number of 34 is only required to be at least one pair. Any simple structural changes that have not been removed from this creation should still be covered by the patent application scope of this creation.

1‧‧‧Drum reel

2‧‧‧ Subject

3‧‧‧ side cover

4‧‧‧ reel

5‧‧‧ rocker arm

51‧‧‧ screw holes

6‧‧‧Transmission unit

7‧‧‧Transmission mechanism

8‧‧‧ Press button

9‧‧‧Bucks

91‧‧‧Outside

L‧‧‧ Axis

10‧‧‧ toothed shaft

11‧‧‧ Department of Management

12‧‧‧Axis hole

121‧‧‧large diameter section

122‧‧‧Small diameter section

13‧‧‧ shoulder

14‧‧‧Slots

15‧‧‧Threaded Department

16‧‧‧External thread

18‧‧‧ bolt

19‧‧‧Medium hole

20‧‧‧First toothed disc

22‧‧‧First perforation

24‧‧‧First slot

30‧‧‧Second toothed disc

31‧‧‧shims

32‧‧‧Second perforation

34‧‧‧Second inlay

40‧‧‧shift lever

42‧‧ ‧ room

43‧‧‧Flange

44‧‧‧ long hole

45‧‧‧ bottom

46‧‧‧ openings

48‧‧‧

P1‧‧‧ first position

P2‧‧‧ second position

50‧‧ ‧ sales

60‧‧‧First elastic parts

65‧‧‧Second elastic parts

1 is a perspective view of a drum reel according to a preferred embodiment of the present invention;  2 is an exploded view of the shifting mechanism of the drum reel according to a preferred embodiment of the present invention;  Figure 3 is a cross-sectional view showing the shifting mechanism of the preferred embodiment in a first position;  Figure 4 is a cross-sectional view of the shifting mechanism of the preferred embodiment of the present invention in a second position.  

Claims (6)

A shifting mechanism for a drum reel includes:  a toothed disk shaft rotatable about an axis, the toothed disk shaft having a shaft hole, and two slot holes communicating with the shaft hole;  a first toothed disc having a first perforation for the sprocket shaft to pass through;  a second sprocket wheel parallel to the first sprocket wheel and having a second perforation for the sprocket shaft to pass through;  a shifting lever extending into the shaft hole of the sprocket shaft, the shifting lever is provided with a chamber and two long holes communicating with the chamber, the shifting lever being movable relative to the sprocket shaft at a first position and a second Axial displacement between positions;  a pin member passing through the two slots of the sprocket shaft and the two long holes of the shift lever, the pin member being movable along the axis relative to the sprocket shaft and the shift lever;  a first elastic member disposed in the chamber of the shift lever and attached to the pin member;  Thereby, when the shift lever is in the first position, the pin member extends into the first through hole, so that the first toothed disc is driven by the toothed disc shaft, when the shift lever is in the second position, The pin extends into the second perforation such that the second chainring is driven by the chainring.   The shifting mechanism of the drum reel according to claim 1, wherein the extending direction of the long hole of the shift lever is parallel to the axis. The shifting mechanism of the drum reel according to claim 1, wherein the first elastic member is a compression spring. The shifting mechanism of the drum reel according to claim 1, wherein the chamber is formed by recessing one end of the shift lever. The shifting mechanism of the drum reel according to claim 1, wherein the shaft hole of the sprocket shaft has a shoulder, the shifting lever has a radially extending flange, and the shifting mechanism further includes a second elastic member. The shift lever is sleeved between the shoulder and the flange. The shifting mechanism of the drum reel according to claim 5, wherein the second elastic member is a compression spring.