reel

Abstract

This invention provides a reel that can improve assembly accuracy. [Solution] The reel comprises a main body, a spool cover, a bearing, a spool section, and a braking system. The spool cover is attached to one end of the main body in the axial direction, a first wall is formed in the spool cover, and a housing chamber is formed radially inside the first wall. The bearing is fitted into the housing chamber. The spool section has a spool shaft whose axial end is rotatably supported by the bearing in the housing chamber. The braking system comprises a coil and a magnet, the coil being attached to one of the first wall and the spool shaft, and the magnet being attached to the other of the first wall and the spool shaft, the coil and the magnet facing each other along the radial direction of the spool shaft.

Description

Technical Field

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[0001] The present disclosure relates to the technical field of fishing tackle, especially to reels.

Background Art

[0002] For example, in a reel such as a rope profile reel, when casting, the rotation speed of the spool is too fast, and the thread payout speed of the spool is faster than the flight speed of the bait. To prevent the problem of "backlash" from occurring in the fishing line wound around the spool, a braking system for braking the spool is provided. In such a braking system, braking force is generated by a combination of a coil and a magnet, and the magnitude of the braking force can be adjusted by a circuit board.

[0003] In the conventional design, for example, in Patent Document 1, a magnet is fixed to the spool shaft, a coil is fixed to the mounting seat of the braking system, and the magnet and the coil are opposed to each other in the radial direction of the spool shaft. When the spool shaft rotates, the magnet and the coil interact to generate braking force.

[0004] In Patent Document 1, the spool shaft is supported by the spool cover of the reel via a bearing, the mounting seat is attached to the spool cover of the reel by screws, and the spool shaft rotates coaxially with respect to the mounting seat. However, due to various assembly errors, especially when the assembly accuracy is insufficient, the coaxiality of the spool shaft and the mounting seat substantially exceeds the assumed range.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] This disclosure aims to provide a reel that can improve assembly accuracy in response to the technical challenges described above. [Means for solving the problem]

[0007] The reel of this disclosure comprises a body, a spool cover, a bearing, a spool section, and a braking system. The spool cover is attached to one end of the main body in the axial direction, a first wall portion is formed on the spool cover, and a housing chamber is formed radially inside the first wall portion. The bearing is fitted into the housing chamber. The spool portion has a spool shaft at one end in the axial direction, which is rotatably supported by the bearing in the housing chamber. The braking system comprises a coil and a magnet, the coil being attached to one of the first wall and the spool shaft, and the magnet being attached to the other of the first wall and the spool shaft, with the coil and the magnet facing each other along the radial direction of the spool shaft.

[0008] In some embodiments, the spool cover is further formed with a second wall surrounding the outside of the first wall, a first sealing wall sealing the first wall and the second wall at one end adjacent to the opening of the housing chamber, and a second sealing wall sealing the housing chamber at the opposite end from the first sealing wall, wherein the first wall, the second wall and the first sealing wall together form a mounting chamber, and the second sealing wall separates the housing chamber from the mounting chamber.

[0009] In some embodiments, the second sealing wall does not protrude axially from the end face of the second wall portion opposite to the first sealing wall in the axial direction.

[0010] In some embodiments, the coil is housed in the mounting chamber and attached to the first wall, the magnet is attached to the spool shaft, and the coil and the magnet face each other via the first wall.

[0011] In some embodiments, the radius of the radial inner wall surface of the first wall is 0.30 mm to 0.50 mm larger than the rotational radius of the magnet.

[0012] In some embodiments, the spool cover is further formed with a shielding cover that extends coaxially with the first wall toward the opening of the housing chamber, the spool portion has a spool coaxial with the spool shaft, the spool has an annular flange portion formed on the side facing the shielding cover, the flange portion extends into the shielding cover, and in the portion where the shielding cover and the flange portion overlap each other in the axial direction, the outer diameter of the flange portion is 0.30 mm to 0.40 mm smaller than the inner diameter of the shielding cover.

[0013] In some embodiments, the system further includes a reinforcing cover that is attached to the mounting chamber and fitted into the first wall.

[0014] In some embodiments, a fitting hole is formed in the center of the reinforcing cover, the inner diameter of the fitting hole is the same as the outer diameter of the first wall, and the reinforcing cover is fitted onto the first wall through the fitting hole.

[0015] In some embodiments, an annular contact portion is formed on the edge of the reinforcing cover, and the outer diameter of the contact portion is the same as the inner diameter of the portion adjacent to the contact portion along the radial direction of the second wall portion.

[0016] In some embodiments, the braking system further comprises a control board, and the reinforcing cover covers the control board such that the contact portion surrounds the radially outer side of the control board. [Effects of the Invention]

[0017] The reel of this disclosure can improve assembly accuracy. [Brief explanation of the drawing]

[0018] [Figure 1] It is a perspective view seen from the second end side of the reel of the present disclosure. [Figure 2] It is a perspective view seen from the first end side of the reel of the present disclosure. [Figure 3] It is a cross-sectional view at the position of the first end of the reel of the present disclosure. [Figure 4] It is a view showing the main part in the cross-sectional view of FIG. 3. [Figure 5] It is a perspective view seen from the axial outer side of one embodiment of the spool cover at the first end of the reel. [Figure 6] It is a perspective view seen from the axial inner side of one embodiment of the spool cover at the first end of the reel.

MODE FOR CARRYING OUT THE INVENTION

[0019] Hereinafter, embodiments of the present application will be described in detail. Examples of the embodiments are shown in the drawings, and the same or similar reference numerals from the beginning to the end indicate the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are exemplary and are only for interpreting the present application and should not be understood as limiting the present application.

[0020] In the description of the present embodiment, as can be understood, the description of the directions involved, for example, the directions or positional relationships indicated by "up", "down", "front", "back", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, and are only for facilitating the description of the present embodiment and simplifying the description, and do not indicate or imply that the shown device or element must have a specific direction or be structured and operated in a specific direction. Therefore, it should not be understood as limiting the present application.

[0021] In the description of this embodiment, "several" means one or more, and "multiple" means two or more. "Greater than," "less than," "greater than," etc., are understood to exclude the same number, while "greater than or equal to," "less than or equal to," "within," etc., are understood to include the same number. The descriptions "first" and "second" are merely for distinguishing technical features and should not be understood as indicating or implying relative importance, implicitly showing the number of technical features being indicated, or implicitly showing the sequence of technical features being indicated.

[0022] In the description of this embodiment, unless otherwise explicitly stated, terms such as "install," "attach," and "connect" should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of these terms in this application in accordance with the specific content of the technical solution.

[0023] In this embodiment, when describing diameter, radius, distance, thickness, etc., "identical" means identical based on a mechanical fit relationship, and may have a certain amount of play (tolerance) allowed for a specific fit relationship (e.g., clearance fit). When describing the axial direction, it refers to the axial direction of the spool shaft 108. When describing the outer and inner sides, the center of the cross-section of the central part of the axial direction of the spool shaft 108 is used as the reference point, and the side of the spool shaft 108 that is further from the center along the radial or axial direction is considered the "outer side," and the side that is closer to the center along the radial or axial direction is considered the "inner side."

[0024] Figure 1 is a perspective view of the reel from the second end 103 side. Figure 2 is a perspective view of the reel from the first end 102 side. Figure 3 is a cross-sectional view at the position of the first end 102 of the reel, and in Figure 3, the view is cut along the rotation center O1 of the spool shaft 108, and for convenience, mainly the configuration on the first end 102 side is shown. Figure 4 is a simplified version of Figure 3, showing the state with the spool cover 111 and braking system 106 attached. Figures 5 and 6 are perspective views of the spool cover 111.

[0025] The reel of the embodiment will be described with reference to Figures 1 to 6.

[0026] Referring mainly to Figures 3 and 4, the reel of the embodiment is, for example, a low-profile reel. The entire reel comprises a body 101, a first end 102, a second end 103, a spool 104, a handle 105, a rotation transmission mechanism (not shown) that transmits rotational motion from the handle 105 to the spool 104, and a braking system 106 that brakes the rotational speed of the spool 104. The body 101 supports the reel as the overall frame. The first end 102 is attached to one end of the body 101 in the axial direction, and the braking system 106 is mainly attached to one side of the first end 102. The second end 103 is attached to the other end of the body 101 in the axial direction, and the rotation transmission mechanism is housed in the second end 103. The handle 105 is attached to the axially outer side of the second end 103 (i.e., opposite to the main body 101) and is driven to the spool section 104 via a rotation transmission mechanism. A specific configuration of the rotation transmission mechanism is, for example, a well-known gear transmission mechanism found in conventional reels, so its explanation is omitted here. The spool section 104 is rotatably mounted on the first end 102 and the second end 103 by a shaft support 107. The shaft support 107 has two bearings 107a, one of which is attached to the first end 102 and the other is coaxially attached to the second end 103. The bearings 107a may be, for example, high-precision ball bearings, cylindrical roller bearings, angular contact ball bearings, etc. The spool section 104 has a spool shaft 108 and a spool 109 that is fitted coaxially to the spool shaft 108 and rotates together with the spool shaft 108. The spool shaft 108 of the spool section 104 and the handle 105 are connected via a rotation transmission mechanism. In addition, both axial ends of the spool shaft 108 are rotatably attached to bearings 107a, so that when the handle 105 is rotated, the spool shaft 108 and the spool 109 rotate together. Fishing line is wound around the spool 109, and as the spool 109 rotates, the fishing line is wound in or unwound.

[0027] The first end 102 has a spool cover 111 and a side cover 112. The first end 102 of the reel in this embodiment is attached to the main body 101 by its side cover 112, for example, by a locking mechanism, so that the spool cover 111 is attached to one end of the main body 101 in the axial direction. The spool cover 111 has a substantially circular shape in plan view. The spool cover 111 can be attached to the side cover 112 by a well-known connection structure, such as a screw connection, and the side cover 112 covers the spool cover 111 from the outside. A knob 118 is rotatably attached to the side cover 112. The knob 118 is connected to a step input section 117 of the control board 116 of the braking system 106 via a connecting shaft 120 which is housed in a space 127 formed between the side cover 112 and the spool cover 111. As a result, the braking force is adjusted by turning the knob 118.

[0028] Referring mainly to Figures 3 and 4, and supplementarily to Figures 5 and 6, in the reel of the embodiment, the spool cover 111 is an integrally molded member, and for example, the spool cover 111 can be injection molded from a high-strength resin material. A first wall portion 186 is formed on the spool cover 111, and a housing chamber 187 is formed radially inside the first wall portion 186. The bearing 107a of the shaft support portion 107 is fitted into the housing chamber 187. The spool shaft 108 of the spool portion 104 has one axial end rotatably supported by the bearing 107a within the housing chamber 187. The braking system 106 has a coil 114 attached to the first wall portion 186 and a magnet 115 attached to the spool shaft 108, and the coil 114 and the magnet 115 face each other radially in the direction of the spool shaft 108.

[0029] The reel of this embodiment can improve assembly accuracy. Specifically, the reel of this embodiment has a first wall portion 186 formed on the spool cover 111, and a housing chamber 187 for mounting a bearing 107a as a shaft support portion 107 inside the first wall portion 186, so that one end of the spool shaft 108 in the axial direction can be attached to the bearing 107a. Furthermore, by directly attaching the coil 114 to the first wall portion 186 which serves as the mounting reference for the spool shaft 108, and attaching the magnet 115 to the spool shaft 108, the number of assembly parts required between the coil 114 and the magnet 115 can be reduced. Consequently, the cumulative assembly error of the parts can be reduced and assembly accuracy can be improved. This makes it possible to increase the coaxiality of the attachment of the coil 114 to the magnet 115.

[0030] In addition to the first wall portion 186, the spool cover 111 has a second wall portion 199 surrounding the radially outer side of the first wall portion 186, and a first sealing wall 188 at one end of the first wall portion 186 and the second wall portion 199 adjacent to the opening of the housing chamber 187, sealing the first wall portion 186 and the second wall portion 199, and a second sealing wall 189 sealing the end of the housing chamber 187 opposite to the first sealing wall 188. The first wall portion 186, the second wall portion 199 and the first sealing wall 188 together form a mounting chamber 147. The mounting chamber 147 houses the coil 114 and the control board 116 of the braking system 106. The mounting chamber 147 can be sealed by known sealing means, such as resin encapsulation. The second sealing wall 189 isolates the housing chamber 187 from the mounting chamber 147 by sealing one end of the first wall portion 186 on the axial side, that is, the end of the housing chamber 187 opposite to the first sealing wall 188.

[0031] The first wall portion 186 is formed in a cylindrical shape, and the radial inner wall surface of the first wall portion 186 facing the housing chamber 187 is a smooth wall surface. The radius r1 of the radial inner wall surface of the first wall portion 186 is greater than the rotation radius r2 of the magnet 115, but by 0.30 mm to 0.50 mm, where the rotation radius r2 is the distance from the position of the magnet 115 attached to the spool shaft 108 that is radially furthest from the rotation center O1 of the spool shaft 108 to the rotation center O1 of the spool shaft 108. The radial outer wall surface of the first wall portion 186 facing the mounting chamber 147 is also a smooth wall surface. The wall thickness of the first wall portion 186 is, for example, 0.50 mm to 1 mm.

[0032] The second wall portion 199 has a first outer wall 190, a second outer wall 191, and a base portion 192 connecting the first outer wall 190 and the second outer wall 191. The first outer wall 190 and the second outer wall 191 are each annular in shape. The first outer wall 190 surrounds the portion of the first wall portion 186 adjacent to the side cover 112 in the axial direction. The wall thickness of the first outer wall 190 is greater than the wall thickness of the first wall portion 186, and may be, for example, 1 mm or more and 3 mm or less. Between the first outer wall 190 and the first wall portion 186, a first chamber 147a of the mounting chamber 147 for housing the control board 116 of the braking system 106 is defined radially. Mounting lugs 124 are formed in the circumferential direction of the first outer wall 190, and the spool cover 111 is attached to the side cover 112 via the mounting lugs 124. The outer diameter of the second outer wall 191 is smaller than the outer diameter of the first outer wall 190. The second outer wall 191 coaxially surrounds the portion of the first wall portion 186 adjacent to the center of the main body 101 in the axial direction. The wall thickness of the second outer wall 191 may be the same as that of the first wall portion 186, but from the viewpoint of considering the overall strength of the second wall portion 199, the wall thickness of the second outer wall 191 may be greater than that of the first wall portion 186. Between the second outer wall 191 and the first wall portion 186, a second chamber 147b is defined in the mounting chamber 147 radially, and the second chamber 147b and the first chamber 147a are in communication. The second chamber 147b houses the coil 114 of the braking system 106, and specifically, the coil 114 is mounted on the first wall portion 186 within the second chamber 147b. The wall thickness of the base 192 of the second wall 199 may be greater than the wall thickness of the first wall 186, for example, it may be 1 mm or more and 3 mm or less. The base 192 is located approximately midway along the axial direction of the spool cover 111 relative to the first wall 186. The base 192 connects one axially inner end of the first outer wall 190 (i.e., the end adjacent to the axially central part of the main body 101) and one axially outer end of the second outer wall 191 (i.e., the end facing the side cover 112), thereby sealing one side of the mounting chamber 147 relative to the axially central part of the main body 101. The side of the mounting chamber 147 facing the side cover 112 is left open.

[0033] The second sealing wall 189 seals one end of the first wall portion 186 facing the axial side cover 112, thereby forming the housing chamber 187. The second sealing wall 189 has a substantially disc-shaped flat plate form. The wall thickness of the second sealing wall 189 is greater than the wall thickness of the first wall portion 186, and may be, for example, 1 mm or more and 3 mm or less. A bearing mounting surface for attaching a bearing 107a is formed on the side of the second sealing wall 189 facing the housing chamber 187, and the bearing 107a abuts against the second sealing wall 189 within the housing chamber 187. The side of the second sealing wall 189 facing the side cover 112 has a planar shape, and this planar surface of the second sealing wall 189 facing the side cover 112 does not axially protrude from the end face of the first outer wall 190 facing the side cover 112.

[0034] Furthermore, the spool cover 111 forms a shielding cover 193, which may be integrally formed on the outer circumference of the first outer wall 190 of the second wall portion 199. The shielding cover 193 and the first wall portion 186 extend coaxially toward the opening side of the housing chamber 187. The shielding cover 193 extends axially toward the first sealing wall 188 (i.e., toward the axial center of the main body 101) beyond the base portion 192 of the second wall portion 199. The shielding cover 193 protrudes 1 mm to 3 mm beyond the base portion 192. The shielding cover 193 has an annular shape and surrounds the entire outer circumference of the first outer wall 190. Of the radial inner surface of the shielding cover 193 (i.e., the side facing the second outer wall 191), at least the surface of the portion protruding from the base portion 192 is a smooth surface.

[0035] Continuing with reference to Figures 3 and 4, the reel of the embodiment further comprises a reinforcing cover 194 attached to the first chamber 147a of the mounting chamber 147. The reinforcing cover 194 has a circular lid shape. The reinforcing cover 194 forms a reinforcing portion 195, which has a flat plate shape and a thickness of, for example, 1 mm to 3 mm. A fitting hole 196 is formed in the center of the reinforcing portion 195, and the inner diameter of the fitting hole 196 is the same as the outer diameter of the first wall portion 186 and the second sealing wall 189. The reinforcing cover 194 penetrates the second sealing wall 189 through this fitting hole 196 and is fitted to one end of the first wall portion 186 adjacent to the second sealing wall 189. The fitting hole 196 and the first wall portion 186 and the second sealing wall 189 are fitted together with a clearance tolerance of grade 7 or grade 8. An annular contact portion 197 is formed on the edge of the reinforcing cover 194, and the contact portion 197 protrudes perpendicularly to the reinforcing portion 195. The outer diameter of the contact portion 197 is the same as the inner diameter of the portion adjacent to the contact portion 197 along the radial direction of the second wall portion 199; that is, the outer diameter of the contact portion 197 and the inner diameter of the first outer wall 190 in the second wall portion 199 are the same. The outer peripheral edge of the contact portion 197 and the inner circumference of the first outer wall 190 are fitted together with a clearance tolerance of grade 8 or 9. With the reinforcing cover 194 attached to the first chamber 147a, the reinforcing cover 194 is fitted into the first wall portion 186 through the fitting hole 196, and the contact portion 197 of the reinforcing cover 194 abuts against the base portion 192 of the spool cover 111. Furthermore, the reinforcing cover 194 covers the control board 116 such that the contact portion 197 surrounds the outside of the control board 116.

[0036] Furthermore, the reinforcing cover 194 may have a relief hole (not indicated) that allows connection between the connecting shaft 120 and the step input section 117 of the control board 116. In the assembled state in which the reinforcing cover 194 covers the control board 116, the gap between the fitting hole 196 of the reinforcing cover 194 and the first wall portion 186 and / or the second sealing wall 189 can be sealed, for example, by filling it with sealing resin. The gap between the relief hole of the reinforcing cover 194 and the connecting shaft 120 is then sealed by fitting a seal. As a result, the entire mounting chamber 147 of the spool cover 111 is sealed.

[0037] As described above, the spool section 104 has a spool shaft 108 and a spool 109 that is fitted coaxially to the spool shaft 108 and rotates together with the spool shaft 108. Fishing line is wound around the spool 109, and as the spool 109 rotates, the fishing line is wound in or unwound. In the assembled state, one axial end of the spool 109 faces the spool cover 111. The spool 109 has an annular flange section 198 formed on the end facing the spool cover 111, and the outer surface of the flange section 198 is a smooth surface. The flange section 198 faces the shielding cover 193 formed on the outer circumference of the first outer wall 190 of the second wall section 199 of the spool cover 111, and the flange section 198 extends into the space formed by the shielding cover 193 and is surrounded from the outer circumference by the shielding cover 193. As a result, there is a portion between the shielding cover 193 and the flange portion 198 that overlaps with each other along the axial direction. Of the portion where the shielding cover 193 and the flange portion 198 overlap with each other along the axial direction, the outer diameter D1 of the flange portion 198 is smaller than the inner diameter D2 of the shielding cover 193, but is smaller by 0.30 mm to 0.40 mm so that the radial gap between the shielding cover 193 and the flange portion 198 is between 0.15 mm and 0.20 mm.

[0038] In this embodiment, the reel has a first wall portion 186 formed on the spool cover 111, and a housing chamber 187 for mounting a bearing 107a, which serves as a shaft support portion 107, inside the first wall portion 186, so that one end of the spool shaft 108 in the axial direction can be attached to the bearing 107a. Furthermore, by directly attaching the coil 114 to the first wall portion 186, which serves as the mounting reference for the spool shaft 108, and attaching the magnet 115 to the spool shaft 108, the number of assembly parts required between the coil 114 and the magnet 115 can be reduced. Consequently, the cumulative assembly error of the parts can be reduced and the assembly accuracy can be improved. This makes it possible to increase the coaxiality of the attachment of the coil 114 to the magnet 115.

[0039] Furthermore, reducing the number of parts can save costs and simplify the assembly process.

[0040] The reel of this embodiment has a mounting chamber 147 and a housing chamber 187 that are isolated from each other, which allows for secure mounting of the reel's braking system 106 and facilitates the sealing of components to be sealed within the mounting chamber 147 (e.g., control board 116 and coil 114).

[0041] In this embodiment, the reel does not have a second sealing wall 189 that protrudes axially from the end face of the second wall portion 199 opposite to the first sealing wall 188. This allows for a larger space 127 to be formed between the side cover 112 and the spool cover 111, enabling other components (e.g., the connecting shaft 120) to be housed compactly. Furthermore, since the side cover 112 does not need to protrude excessively in the axial direction, it does not affect the user's grip.

[0042] In this embodiment, the reel has a radius r1 of the radial inner wall surface of the first wall portion 186 that is 0.30 mm to 0.50 mm larger than the rotation radius r2 of the magnet 115, which allows the magnet 115 and the coil 114 to be brought closer together and strengthens the magnetic field. Furthermore, because there is a high degree of coaxiality between the first wall portion 186 and the spool shaft 108, even if the gap between the inner wall surface of the first wall portion 186 and the magnet 115 is small (for example, 0.15 mm), friction between the magnet 115 and the inner wall surface of the first wall portion 186 can be suppressed.

[0043] In the embodiment of the reel, the outer diameter D1 of the flange portion 198 is 0.30 mm to 0.40 mm smaller than the inner diameter D2 of the shielding cover 193 in the portion where the shielding cover 193 formed on the spool cover 111 and the flange portion 198 formed on the spool 109 overlap each other in the axial direction. This suppresses the fishing line from getting tangled inside the spool cover 111 due to backlash. Furthermore, since the spool cover 111 integrally forms the shielding cover 193 and the first wall portion 186 for attaching the spool shaft 108, coaxiality between the shielding cover 193 and the first wall portion 186 can be ensured, and consequently, coaxiality between the shielding cover 193 and the flange portion 198 can be ensured. Even if the gap between the shielding cover 193 and the flange portion 198 is small (for example, 0.15 mm), friction between the shielding cover 193 and the flange portion 198 can be suppressed.

[0044] The reel of this embodiment has a reinforcing cover 194 fitted onto the first wall portion 186, which increases the strength of the first wall portion 186 in the spool cover 111 where the bearing 107a is attached, thereby suppressing deformation and cracking of the first wall portion 186.

[0045] Furthermore, since the outer diameter of the contact portion 197 of the reinforcing cover 194 is the same as the inner diameter of the portion adjacent to the contact portion 197 along the radial direction of the second wall portion 199, the first wall portion 186 and the second wall portion 199 can be connected via the reinforcing cover 194, thereby increasing the strength of the first wall portion 186 and suppressing deformation and cracking of the first wall portion 186.

[0046] In the embodiments described above, the magnet 115 of the braking system 106 is attached to the spool shaft 108 and the coil 114 is attached to the first wall portion 186, but the invention is not limited to this. In practice, the coil 114 may be attached to the spool shaft 108 and the magnet 115 to the first wall portion 186, as long as effective waterproofing is possible for the coil 114.

[0047] In the embodiments described above, an example was described in which a second wall portion 199 and a first sealing wall 188 are formed on the spool cover 111, and the first wall portion 186, the second wall portion 199, and the first sealing wall 188 together form a mounting chamber 147, but the invention is not limited thereto. The spool cover 111 does not need to have a second wall portion 199 and a first sealing wall 188 if the control board 116 of the braking system 106 can be mounted and effective waterproofing can be achieved. In this case, for example, the spool cover 111 may have a flat substrate, and further, a first wall portion 186 perpendicular to the base portion 192 may be formed on the substrate. The control board 116 can be sealed directly to the substrate by means such as resin encapsulation.

[0048] In the embodiments described above, an example was described in which the shielding cover 193 is integrally formed on the outer circumference of the first outer wall 190 of the second wall portion 199, but the invention is not limited to this. For example, the shielding cover 193 may be formed on the base portion 192 of the second wall portion 199. Alternatively, if the spool cover 111 does not have a second wall portion 199 in the first place, the shielding cover 193 may be formed directly on the substrate of the spool cover 111.

[0049] In the above embodiment, an example in which the reel has a reinforcing cover 194 has been described, but the reel is not limited thereto. If the strength of the spool cover 111 is sufficient, the reel does not need to have a reinforcing cover 194.

[0050] Furthermore, although an example in which the reinforcing cover 194 has a contact portion 197 has been described, the invention is not limited to this. For example, a projection or the like that may be formed within the mounting chamber 147 to support the reinforcing cover 194, such that there is a gap between the reinforcing cover 194 and the control board 116.

[0051] Although embodiments of this embodiment have been illustrated and described, those skilled in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this embodiment. The scope of this embodiment is defined by the claims and equivalents. [Explanation of symbols]

[0052] 101 Main Unit 102 First end 103 Second end 104 Spool section 105 Handle 106 Braking System 107 Shaft support part 107a Bearing 108 Spool shaft 109 Spool 111 Spool Cover 112 Side cover 114 coils 115 Magnets 116 Control board 117-step input section 118 snacks 120 Connecting shaft 124 Mounting ears 147 Installation Room 147a Room 1 147b Room 2 186 1st wall section 187 Confinement Rooms 188 1st sealing wall 189 Second sealing wall 190 1st outer wall 191 Second outer wall 192 Base 193 Shielding cover 194 Reinforcement Cover 195 Reinforcement section 196 mounting holes 197 Contact part 198 Flange section 199 2nd wall section D1 Outer diameter of flange section D2 Inner diameter of shielding cover r1 Radius of the inner wall surface in the radial direction of the first wall r² is the radius of rotation of the magnet. O1 Spool shaft rotation center

Claims

1. The main unit and A spool cover attached to one end of the main body in the axial direction, wherein a first wall portion is formed on the spool cover, and a housing chamber is formed radially inside the first wall portion, A bearing fitted into the aforementioned housing chamber, A spool portion having a spool shaft whose axial end is rotatably supported by the bearing in the housing chamber, A braking system comprising a coil and a magnet, wherein the coil is attached to one of the first wall portion and the spool shaft, and the magnet is attached to the other of the first wall portion and the spool shaft, and the coil and the magnet are arranged facing each other along the radial direction of the spool shaft. A reel characterized by having the following features.

2. The aforementioned spool cover includes: The second wall portion surrounds the outside of the first wall portion, A first sealing wall is provided at one end of the first wall and the second wall adjacent to the opening of the containment chamber, sealing the first wall and the second wall together. A second sealing wall seals the end of the containment chamber opposite to the first sealing wall, Further formation occurs, The first wall portion, the second wall portion, and the first sealing wall all form an installation chamber. The second sealing wall separates the housing chamber and the mounting chamber from each other. The reel as described in feature 1.

3. The second sealing wall does not protrude from the end face of the second wall portion opposite to the first sealing wall in the axial direction. The reel according to feature 2.

4. The coil is housed in the mounting chamber and attached to the first wall. The magnet is attached to the spool shaft, The coil and the magnet face each other via the first wall portion. The reel according to feature 2.

5. The radius of the inner wall surface in the radial direction of the first wall portion is greater than the rotational radius of the magnet by an amount of 0.30 mm or more and 0.50 mm or less. The reel according to feature 4.

6. The spool cover is further provided with a shielding cover that extends coaxially with the first wall toward the opening of the housing chamber. The spool portion has a spool coaxial with the spool shaft, and the spool has an annular flange portion formed on the side facing the shielding cover, and the flange portion extends into the shielding cover. In the portion where the shielding cover and the flange portion overlap each other in the axial direction, the outer diameter of the flange portion is 0.30 mm or more and 0.40 mm or less smaller than the inner diameter of the shielding cover. The reel according to claim 1 or 2, characterized by the features described above.

7. It is attached to the aforementioned mounting chamber and further has a reinforcing cover that fits into the first wall, The reel according to feature 2.

8. A fitting hole is formed in the center of the reinforcing cover, and the inner diameter of the fitting hole and the outer diameter of the first wall portion are the same. The reinforcing cover is fitted to the first wall through the fitting hole. The reel according to feature 7.

9. An annular contact portion is formed on the edge of the reinforcing cover, and the outer diameter of the contact portion is the same as the inner diameter of the portion adjacent to the contact portion along the radial direction of the second wall portion. The reel as described in feature 8.

10. The braking system further comprises a control board, and the reinforcing cover covers the control board such that the contact portion surrounds the radially outer side of the control board. The reel as described in item 9.

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