Electric guitar and protective film-equipped resin plate

The resin plate with a larger protective film through-hole allows for clean peeling without loosening the nut, addressing damage issues and enhancing manufacturing efficiency and appearance in electric guitars.

JP2025157721APending Publication Date: 2025-10-16TSUBASA LTD
View PDF 1 Cites 0 Cited by

Patent Information

Application Number
JP2024059909
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-04-03
Publication Date
2025-10-16

AI Technical Summary

Technical Problem

Existing electric guitars suffer damage to the connection between the resistor body and wiring when users attempt to remove the protective film from the pickguard, leading to incomplete peeling and potential damage.

Method used

The design includes a resin plate with a protective film featuring a larger through-hole in the film than the resin plate, allowing the film to be cleanly peeled off without loosening the nut securing the variable resistor, thus preventing damage to the connection between the resistor body and wiring.

Benefits of technology

The solution enables clean peeling of the protective film without damaging the resistor-wiring connection, improving the manufacturing process and maintaining the guitar's appearance by minimizing visible scratches.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure 2025157721000001_ABST
    Figure 2025157721000001_ABST
Patent Text Reader

Abstract

To provide an electric guitar including a protective film-equipped resin plate attached to a front surface of a guitar body, in which the protective film can be stripped cleanly from the resin plate while preventing a damage to a connection portion between a resistor body of a variable resistor attached to a rear surface side of the resin plate and an interconnection.SOLUTION: In the electric guitar, a sound volume adjustment unit and a resistor body 20 of a variable resistor 17 of a sound quality adjustment unit 13 are attached to the rear surface side of a resin plate 11, and the variable resistor 17 is secured by a nut 22 arranged on the front surface side of the resin plate 11. In the resin plate 11, a through-hole 11a in which part of the variable resistor 17 is arranged is formed. In a protective film 15, a through-hole 15a having a diameter larger than the diameter of the through-hole 11a is formed. When viewed in a thickness direction of the resin plate 11, the through-hole 11a is arranged in the through-hole 15a.SELECTED DRAWING: Figure 2
Need to check novelty before this filing date? Find Prior Art

Description

[Technical Field]

[0001] The present invention relates to an electric guitar and to a resin plate with a protective film that is attached to the front surface of the body of an electric guitar. [Background technology]

[0002] Conventionally, electric guitars have been known that include a guitar body and a pickguard attached to the front surface of the guitar body (see, for example, Patent Document 1). The electric guitar described in Patent Document 1 includes a knob (control knob) for adjusting the volume of the electric guitar and a knob for adjusting the sound quality (timbre) of the electric guitar. The knob is attached, for example, to the rotating shaft of a variable resistor attached to the pickguard. The pickguard is fixed to the guitar body with multiple screws. The guitar body has a recess in which various electronic components are placed. This recess is covered by the pickguard.

[0003] In the electric guitar described in Patent Document 1, a through-hole for attaching a variable resistor is formed in the pickguard. The pickguard also has through-holes for inserting screws. In the case of the electric guitar described in Patent Document 1, a protective film is attached to the front surface of the pickguard when it is new. Furthermore, even when the pickguard attached to the guitar body is replaced with a new pickguard, the protective film remains attached to the front surface of the pickguard. A user typically uses the electric guitar after peeling the protective film off the pickguard. When the pickguard is manufactured, a drilling process is performed on the pickguard with the protective film attached, forming multiple through-holes. Therefore, through-holes are also formed in the protective film.

[0004] A variable resistor generally includes a resistor body located on the back side of the pickguard, a rotary shaft to which a knob is attached and which is rotatable relative to the resistor body, a shaft support part fixed to the resistor body and rotatably supporting the rotary shaft, and a nut for fixing the resistor body and the shaft support part to the pickguard. The shaft support part includes a cylindrical part that is inserted into a through-hole in the pickguard for attaching the variable resistor and has a part of the rotary shaft located on its inner periphery. A male thread is formed on the outer periphery of the cylindrical part, with which a nut engages. The nut is located on the front side of the pickguard. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 5676044 Summary of the Invention [Problem to be solved by the invention]

[0006] The present inventor manufactures electric guitars. In the electric guitars manufactured by the inventor, the resistor body of the variable resistor is attached to the backside of a pickguard or a resin plate formed separately from the pickguard and attached to the front surface of the guitar body. Even in this electric guitar, for example, a protective film is attached to the front surface of the pickguard or plate when it is new. Research by the present inventor has revealed that, after users remove the protective film from the pickguard or plate, damage occurs to the connection between the resistor body and the wiring, such as lead wires, connected to the resistor body. Specifically, the inventor's research has revealed that damage occurs to the connection between the resistor body and the wiring when users attempt to cleanly remove the protective film from the pickguard or plate.

[0007] Therefore, an object of the present invention is to provide an electric guitar that includes a resin plate with a protective film attached to the front surface of the guitar body, and that allows the protective film to be cleanly peeled off from the resin plate while preventing damage to the connection between the resistor body of a variable resistor attached to the back side of the resin plate and the wiring.Another object of the present invention is to provide a resin plate with a protective film attached to the front surface of the guitar body of an electric guitar, and that allows the protective film to be cleanly peeled off from the resin plate while preventing damage to the connection between the resistor body attached to the back side of the resin plate and the wiring. [Means for solving the problem]

[0008] In order to solve the above problem, the inventors conducted further research. As a result, the inventors discovered that when a user who attempts to completely peel off the protective film from the resin plate loosens the nut in order to completely peel off the portion of the protective film between the nut of the variable resistor and the resin plate (i.e., the portion of the protective film where the variable resistor is located), the connection portion between the resistor body and the wiring of the variable resistor is damaged. Furthermore, through further research, the inventors discovered that when the loosened nut is retightened, the resistor body and the shaft support rotate together with the nut, causing damage to the connection portion between the resistor body and the wiring.

[0009] The electric guitar of the present invention is based on this new finding and comprises a guitar body, a resin plate with a protective film attached to the front surface of the guitar body, a volume adjustment unit for adjusting the volume, and a sound quality adjustment unit for adjusting the sound quality, the protective film being attached to the front surface of the resin plate, the volume adjustment unit and the sound quality adjustment unit comprising a variable resistor having a resistor body attached to the back side of the resin plate, the variable resistor being fixed by a nut placed on the front surface of the resin plate, a first through hole formed in the resin plate in which part of the variable resistor is placed, a second through hole formed in the protective film with a diameter larger than that of the first through hole, and the first through hole being positioned within the second through hole when viewed in the thickness direction of the resin plate.

[0010] In the electric guitar of the present invention, the diameter of the second through hole formed in the protective film is larger than the diameter of the first through hole in the resin plate in which part of the variable resistor is disposed, and when viewed from the thickness direction of the resin plate, the first through hole is disposed within the second through hole. Therefore, in this invention, the part of the protective film in which the variable resistor is disposed can be cleanly peeled off without loosening the nut.

[0011] Therefore, in this invention, the portion of the protective film where the variable resistor is located can be cleanly peeled off while preventing damage to the connection portion between the resistor body of the variable resistor attached to the back side of the resin plate and the wiring, so that the user can cleanly peel the protective film off the resin plate. Also, in this invention, the portion of the protective film where the variable resistor is located can be cleanly peeled off without loosening the nut, so even if the portion of the protective film where the variable resistor is located can be cleanly peeled off, the protective film can be easily peeled off.

[0012] In the present invention, for example, the first through hole and the second through hole are circular holes, and the first through hole and the second through hole are formed concentrically.

[0013] In the present invention, the volume control unit and the sound quality control unit preferably include a knob attached to the rotary shaft of the variable resistor and disposed on the front surface of the resin plate, and the diameter of the second through hole is preferably approximately the same as or smaller than the outer shape of the knob when viewed in the axial direction of the rotary shaft, which is the thickness direction of the resin plate. In the present invention, the second through hole, which is larger in diameter than the first through hole, is formed in the protective film, and the protective film is drilled when the resin plate is manufactured. Therefore, there is a risk of circular scratches being generated on the front surface of the resin plate when the protective film is drilled.

[0014] However, if the diameter of the second through hole is approximately the same as or smaller than the outer shape of the knob when viewed in the axial direction of the rotating shaft, which is the thickness direction of the resin plate, even if a circular scratch appears on the front surface of the resin plate, the scratch will be difficult to see when the knob is attached to the variable resistor. Therefore, even if the portion of the protective film where the variable resistor is located can be cleanly peeled off, the appearance of the electric guitar can be improved.

[0015] In the present invention, the variable resistor comprises a rotating shaft that is rotatable relative to the resistor body, a shaft support portion that is fixed to the resistor body and rotatably supports the rotating shaft, a nut for fixing the resistor body and the shaft support portion to a resin plate, and a washer that is arranged on the front surface of the resin plate together with the nut, the shaft support portion having a cylindrical portion on its outer surface that has a male thread that engages with the nut and a part of the rotating shaft that is arranged on its inner side, the part of the cylindrical portion being arranged within the first through hole and on the inner side of the washer, the washer contacting the front surface of the resin plate, the outer diameter of the washer being smaller than the outer shape of the knob when viewed from the axial direction of the rotating shaft, and the diameter of the second through hole being approximately the same size as the outer diameter of the washer.

[0016] With this configuration, the diameter of the second through hole in the protective film is approximately the same as the outer diameter of the washer that contacts the front surface of the resin plate, so the portion of the protective film where the variable resistor is located can be peeled off more cleanly and easily without loosening the nut. This makes it possible to peel off the portion of the protective film where the variable resistor is located more cleanly and easily while preventing damage to the connection between the resistor body attached to the back side of the resin plate and the wiring.

[0017] Furthermore, with this configuration, the diameter of the second through hole is approximately the same as the outer diameter of the washer, which is smaller than the outer diameter of the knob when viewed axially of the rotary shaft, so even if a circular scratch appears on the front surface of the resin plate when drilling the protective film, the scratch will be less visible when the knob is attached to the variable resistor. Therefore, even if the portion of the protective film where the variable resistor is located can be peeled off cleanly, the appearance of the electric guitar will be improved.

[0018] Furthermore, based on the above-mentioned new findings, the resin plate with a protective film of the present invention is a resin plate with a protective film that is attached to the front surface of the guitar body of an electric guitar, and is characterized in that it has a first through hole formed therein in which a volume adjustment unit for adjusting the volume of the electric guitar and a part of a variable resistor provided in a sound quality adjustment unit for adjusting the sound quality of the electric guitar are disposed, the protective film is attached to the front surface of the resin plate, a second through hole is formed in the protective film whose diameter is larger than that of the first through hole, and when viewed in the thickness direction of the resin plate, the first through hole is disposed within the second through hole.

[0019] In the resin plate with the protective film of the present invention, the diameter of the second through hole formed in the protective film is larger than the diameter of the first through hole in the resin plate in which part of the variable resistor is disposed, and when viewed from the thickness direction of the resin plate, the first through hole is disposed within the second through hole. Therefore, in an electric guitar to which the resin plate of the present invention is attached, the part of the protective film where the variable resistor is disposed can be cleanly peeled off without loosening the nut that secures the variable resistor to the resin plate.

[0020] Therefore, in an electric guitar equipped with the resin plate of the present invention, the portion of the protective film where the variable resistor is located can be cleanly peeled off while preventing damage to the connection between the resistor body of the variable resistor attached to the back side of the resin plate and the wiring, allowing the user to cleanly peel the protective film off the resin plate. Also, in an electric guitar equipped with the resin plate of the present invention, the portion of the protective film where the variable resistor is located can be cleanly peeled off without loosening the nut, so even if the portion of the protective film where the variable resistor is located can be cleanly peeled off, the protective film can be easily peeled off.

[0021] In the present invention, the resin plate with the protective film includes, for example, a volume adjustment unit and a tone control unit. In this case, when manufacturing the electric guitar, the resin plate unitized with the volume adjustment unit and tone control unit can be attached to the guitar body, simplifying the manufacturing process for electric guitars and increasing the productivity of electric guitars. [Effects of the Invention]

[0022] As described above, in the electric guitar of the present invention, it is possible to cleanly peel off the protective film from the resin plate while preventing damage to the connection between the wiring and the resistor body attached to the back side of the resin plate. Also, in the electric guitar to which the resin plate with the protective film of the present invention is attached, it is possible to cleanly peel off the protective film from the resin plate while preventing damage to the connection between the wiring and the resistor body attached to the back side of the resin plate. [Brief explanation of the drawings]

[0023] [Figure 1] 1 is a front view of an electric guitar according to an embodiment of the present invention. [Figure 2] FIG. 2 is a partial cross-sectional view for explaining the configuration of a portion E in FIG. [Figure 3] FIG. 3 is a diagram showing a pickguard with a protective film as viewed from the FF direction in FIG. 2. [Figure 4] FIG. 10 is a front view of an electric guitar according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0024] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0025] (Electric guitar composition) Fig. 1 is a front view of an electric guitar 1 according to an embodiment of the present invention. Fig. 2 is a partial cross-sectional view for explaining the configuration of part E in Fig. 1. Fig. 3 is a view showing a pickguard 11 with a protective film as viewed from the FF direction in Fig. 2.

[0026] The electric guitar 1 of this embodiment includes a guitar body 2, a neck 3 fixed to the guitar body 2, strings 4, a bridge 5 with which one end of the strings 4 engages, three pickups 6, a pickup selector switch 7, and an output jack 8. The electric guitar 1 also includes a pickguard 11 with a protective film to prevent the guitar body 2 from being scratched, a volume control 12 for adjusting the volume of the electric guitar 1, and a sound quality control 13 for adjusting the sound quality (timbre) of the electric guitar 1. The electric guitar 1 of this embodiment is a Stratocaster-type electric guitar, and the pickups 6, pickup selector switch 7, volume control 12, and sound quality control 13 are attached to the pickguard 11.

[0027] The pickguard 11 is made of resin. The pickguard 11 is formed in a flat plate shape. The pickguard 11 is attached to the front surface of the guitar body 2. Specifically, the pickguard 11 is fixed to the front surface of the guitar body 2 with a plurality of screws 14. In this embodiment, the pickguard 11 is a resin plate attached to the front surface of the guitar body 2. In the following description, the thickness direction of the flat pickguard 11 is referred to as the front-to-rear direction. The front side of the pickguard 11, which is one side of the thickness direction of the pickguard 11 (i.e., the front side of the guitar body 2, the X1 direction side in Figure 2), is referred to as the "front" side, and the opposite back side of the pickguard 11 (the X2 direction side in Figure 2) is referred to as the "rear" side.

[0028] The guitar body 2 has a recess in which various electronic components are placed. This recess is recessed from the front of the guitar body 2 toward the rear. This recess is covered by a pickguard 11. A resin protective film 15 is attached to the front surface (front face) of the pickguard 11 to prevent scratches on the front surface of a new pickguard 11.

[0029] The volume control unit 12 and the tone control unit 13 each include a variable resistor (pot) 17 attached to the pickguard 11 and a knob 19 attached to a rotating shaft 18 of the variable resistor 17. The variable resistor 17 includes a resistor body 20 located on the back side (rear side) of the pickguard 11. The resistor body 20 is located in a recess formed in the guitar body 2. Wiring such as lead wires is connected to the resistor body 20. The rotating shaft 18 is rotatable relative to the resistor body 20. Rotating the rotating shaft 18 changes the resistance value of the variable resistor 17. The axial direction of the rotating shaft 18 coincides with the thickness direction of the pickguard 11, which is formed in a flat plate shape. In other words, the axial direction of the rotating shaft 18 coincides with the front-to-rear direction. The rotating shaft 18 protrudes forward from the resistor body 20.

[0030] The variable resistor 17 also includes a shaft support 21 that is fixed to the resistor body 20 and rotatably supports the rotary shaft 18. The shaft support 21 is fixed to the front end of the resistor body 20. The shaft support 21 includes a cylindrical portion 21a, with a portion of the rotary shaft 18 located on the inner periphery thereof. The cylindrical portion 21a protrudes forward from the resistor body 20. The front end of the rotary shaft 18 is located forward of the front end of the cylindrical portion 21a. The variable resistor 17 also includes a nut 22 for fixing the variable resistor 17 to the pickguard 11. That is, the variable resistor 17 includes a nut 22 for fixing the resistor body 20 and the shaft support 21 to the pickguard 11. A male thread is formed on the outer periphery of the cylindrical portion 21a, with which the nut 22 engages. The nut 22 is located on the front surface (front side) of the pickguard 11. That is, the variable resistor 17 is fixed by a nut 22 disposed on the front surface side of the pickguard 11.

[0031] The variable resistor 17 also includes a washer 23 that is arranged on the front surface (front side) of the pickguard 11 together with the nut 22. The washer 23 is a flat washer that is annular and flat. The thickness direction of the washer 23 coincides with the front-to-rear direction. The outer diameter of the washer 23 is larger than the outer diameter of the nut 22. A cylindrical portion 21a is inserted into the washer 23, and a portion of the cylindrical portion 21a is arranged on the inner peripheral side of the washer 23. The washer 23 is arranged on the rear side of the nut 22. The outer diameter of the washer 23 may be approximately the same as the outer diameter of the nut 22, or may be smaller than the outer diameter of the nut 22.

[0032] The knob 19 is formed as a whole in a cylindrical shape with a bottom. The knob 19 is composed of a cylindrical knob front end 19a with a bottom that forms the front end of the knob 19, and a cylindrical knob rear end 19b that forms the rear end of the knob 19. The knob rear end 19b has a truncated cone shape whose outer diameter gradually increases toward the rear. The knob 19 is attached to the front end of the rotation shaft 18 and is located on the front side of the pickguard 11. In other words, the knob 19 is located on the front surface side of the pickguard 11.

[0033] The front end of the rotary shaft 18, the front end of the cylindrical portion 21a, the nut 22, and the washer 23 are arranged on the inner periphery of the knob 19. The nut 22 and the washer 23 are arranged on the inner periphery of the knob rear end 19b. The outer diameter of the washer 23 is smaller than the outer diameter of the rear end of the knob rear end 19b. In other words, the outer diameter of the washer 23 is smaller than the maximum outer diameter of the knob 19, and is smaller than the outer shape of the knob 19 when viewed from the front-to-rear direction.

[0034] The pickguard 11 has a through-hole through which the screw 14 is inserted. The guitar body 2 has a threaded hole into which the tip of the screw 14 engages. The pickguard 11 also has an opening in which the pickup 6 is disposed and a slit-shaped through-hole in which part of the pickup selector switch 7 is disposed. The pickguard 11 also has a through-hole 11a as a first through-hole in which part of the variable resistor 17 is disposed. That is, the pickguard 11 has a through-hole 11a for attaching the variable resistor 17 to the pickguard 11. The through-hole 11a is a circular hole that passes through the pickguard 11 in the front-to-rear direction. A cylindrical portion 21a is inserted into the through-hole 11a. That is, part of the cylindrical portion 21a is disposed within the through-hole 11a.

[0035] The protective film 15 is formed with a second through-hole 15a having a diameter larger than that of the through-hole 11a. The through-hole 15a is a circular hole that penetrates the protective film 15. The through-holes 11a and 15a are formed concentrically, and the through-hole 11a is disposed within the through-hole 15a when viewed from the front-to-rear direction. That is, the through-hole 15a is formed to surround the through-hole 11a. The diameter of the through-hole 15a is approximately the same as the outer diameter of the washer 23. For example, the diameter of the through-hole 15a is the same as or slightly larger than the outer diameter of the washer 23. The diameter of the through-hole 15a is smaller than the maximum outer diameter of the knob 19 (i.e., the outer diameter of the rear end of the knob rear end 19b), and is smaller than the outer shape of the knob 19 when viewed from the front-to-rear direction. The washer 23 is in contact with the front surface (front face) of the pickguard 11.

[0036] 2 shows a partial cross-sectional view of a location where one of the two sound quality adjustment units 13 is arranged, but the location where the other sound quality adjustment unit 13 is arranged is also configured in the same way as in Fig. 2. Furthermore, the location where the volume adjustment unit 12 is arranged is also configured in the same way as in Fig. 2. That is, in all the locations where the volume adjustment unit 12 and the sound quality adjustment unit 13 are arranged, through holes 15a are formed in the protective film 15.

[0037] (Main effect of this form) As described above, in this embodiment, the protective film 15 has a through-hole 15a formed concentrically with the through-hole 11a of the pickguard 11, the through-hole 15a having a diameter larger than that of the through-hole 11a. Therefore, in this embodiment, the portion of the protective film 15 where the variable resistor 17 is located can be cleanly peeled off without loosening the nut 22. Therefore, in this embodiment, the portion of the protective film 15 where the variable resistor 17 is located can be cleanly peeled off while preventing damage to the connection between the resistor body 20 attached to the pickguard 11 and the wiring. As a result, the user can cleanly peel the protective film 15 from the pickguard 11. Furthermore, in this embodiment, the portion of the protective film 15 where the variable resistor 17 is located can be cleanly peeled off without loosening the nut 22. Therefore, even if the portion of the protective film 15 where the variable resistor 17 is located can be cleanly peeled off, the protective film 15 can be easily peeled off.

[0038] In particular, in this embodiment, the diameter of the through hole 15a in the protective film 15 is approximately the same as the outer diameter of the washer 23 that contacts the front surface of the pickguard 11. Therefore, the protective film 15 is not sandwiched between the front surface of the pickguard 11 and the washer 23, or even if the protective film 15 is sandwiched between the front surface of the pickguard 11 and the washer 23, only a small portion of the protective film 15 is sandwiched between the front surface of the pickguard 11 and the washer 23. Therefore, in this embodiment, the portion of the protective film 15 where the variable resistor 17 is located can be peeled off more cleanly and easily without loosening the nut 22. As a result, in this embodiment, the portion of the protective film 15 where the variable resistor 17 is located can be peeled off more cleanly and easily while preventing damage to the connection between the resistor body 20 and the wiring.

[0039] In this embodiment, the protective film 15 has a through-hole 15a formed therein, and the protective film 15 is drilled during the manufacturing process of the pickguard 11. This may result in a circular scratch on the front surface of the pickguard 11 during the drilling process. However, in this embodiment, the diameter of the through-hole 15a is smaller than the outer shape of the knob 19 when viewed from the front and rear. Therefore, even if a circular scratch does occur on the front surface of the pickguard 11, the scratch will be less visible when the knob 19 is attached to the variable resistor 17. Therefore, in this embodiment, the appearance of the electric guitar 1 can be improved even if the portion of the protective film 15 where the variable resistor 17 is located can be cleanly peeled off.

[0040] (Example of electric guitar modification) Fig. 4 is a front view of an electric guitar 1 according to another embodiment of the present invention. In Fig. 4, the same components as those in the embodiment described above are denoted by the same reference numerals.

[0041] In the above-described embodiment, electric guitar 1 may include unit plate 25 with a protective film formed separately from pickguard 11. Pickup selector switch 7, volume control unit 12, and tone control unit 13 are attached to unit plate 25. Unit plate 25 is attached to the front surface of guitar body 2. Unit plate 25 is configured similarly to the portion of pickguard 11 in the above-described embodiment where pickup selector switch 7, volume control unit 12, and tone control unit 13 are attached.

[0042] That is, the unit plate 25 is made of resin. The unit plate 25 is formed in a flat plate shape. A protective film 15 having a through hole 15a formed therein is attached to the front surface of the unit plate 25. The unit plate 25 also has a first through hole formed therein, which is similar to the through hole 11a. A detailed description of the specific configuration of the unit plate 25 will be omitted. The unit plate 25 of this modified example is a resin plate attached to the front surface of the guitar body 2. This modified example also provides the same effects as the above-described embodiment.

[0043] (Other embodiments) If the above-described embodiments and modified examples are referred to as "the above-described embodiments, etc.", in the above-described embodiments, etc., the diameter of through hole 15a may be smaller than the outer diameter of washer 23. For example, the diameter of through hole 15a may be slightly smaller than the outer diameter of washer 23. Also, in the above-described embodiments, etc., the diameter of through hole 15a may be larger than the outer diameter of washer 23. In this case, the portion of protective film 15 where variable resistor 17 is located can be peeled off more cleanly and more easily. For example, the diameter of through hole 15a may be approximately the same size as the maximum outer diameter of knob 19 (the outer diameter of the rear end of knob rear end 19b). In other words, the diameter of through hole 15a may be approximately the same size as the outer shape of knob 19 when viewed from the front-to-rear direction. Also, the diameter of through hole 15a may be larger than the maximum outer diameter of knob 19.

[0044] In the above-described embodiment, the variable resistor 17 does not need to include the washer 23. In this case, the nut 22 contacts the front surface of the pickguard 11 or the front surface of the unit plate 25. In this case, the diameter of the through hole 15a is approximately the same as the outer diameter of the nut 22. If the through hole formed in the unit plate 25 and the through hole 11a are referred to as "first through holes," in the above-described embodiment, the first through hole and the through hole 15a do not need to be concentric. Furthermore, the first through hole does not need to be circular, and the through hole 15a does not need to be circular.

[0045] In the embodiment described above, the pickguard 11 with the protective film is attached to the guitar body 2, but the pickguard 11 with the protective film may be sold separately on the market. Even in this case, the pickguard 11 has a through-hole 11a formed therein, and the protective film 15 has a through-hole 15a formed therein. Similarly, the unit plate 25 with the protective film may be sold separately on the market. Even in this case, the unit plate 25 has a first through-hole formed therein, and the protective film 15 has a through-hole 15a formed therein.

[0046] Also, pickguards 11 with protective film that are unitized with pickup 6, pickup selector switch 7, volume control unit 12, and tone control unit 13 attached (i.e., pickguards 11 with protective film that are unitized with pickup 6, pickup selector switch 7, volume control unit 12, and tone control unit 13) may be traded on the market. Also, unit plates 25 with protective film that are unitized with pickup selector switch 7, volume control unit 12, and tone control unit 13 attached may be traded on the market. In this case, the pickguards 11 or unit plates 25 that are unitized with volume control unit 12, tone control unit 13, etc. attached can be attached to guitar body 2, which simplifies the manufacturing process of electric guitar 1 and enables increased productivity of electric guitar 1. [Explanation of symbols]

[0047] 1 electric guitar 2. Guitar body 11 Pickguard (resin plate) 11a through hole (first through hole) 12 Volume control section 13 Sound quality adjustment section 15 Protective film 15a Through hole (second through hole) 17 Variable resistor 18 Rotation axis 19 Knob 20 Resistor body 21 Shaft support part 21a Cylindrical part 22 Nut 23 Washer 25 Unit plate (resin plate)

Claims

1. The guitar comprises a guitar body, a resin plate with a protective film attached to the front surface of the guitar body, a volume control unit for adjusting the volume, and a sound quality control unit for adjusting the sound quality, the protective film is attached to the front surface of the resin plate, the volume control unit and the sound quality control unit each include a variable resistor having a resistor body attached to the rear surface side of the resin plate, the variable resistor is fixed by a nut disposed on the front surface side of the resin plate, a first through hole in which a part of the variable resistor is disposed is formed in the resin plate; a second through hole having a diameter larger than that of the first through hole is formed in the protective film; an electric guitar, wherein the first through hole is disposed within the second through hole when viewed in a thickness direction of the resin plate;

2. the first through hole and the second through hole are circular holes, 2. The electric guitar according to claim 1, wherein the first through-hole and the second through-hole are formed concentrically.

3. the volume control unit and the sound quality control unit each include a knob attached to a rotation shaft of the variable resistor and disposed on the front surface side of the resin plate, 3. The electric guitar according to claim 2, wherein the diameter of the second through hole is approximately the same as the outer shape of the knob when viewed in the axial direction of the rotation shaft, which is the thickness direction of the resin plate, or is smaller than the outer shape of the knob when viewed in the axial direction of the rotation shaft.

4. the variable resistor comprises: the rotating shaft rotatable relative to the resistor body; a shaft support portion fixed to the resistor body and rotatably supporting the rotating shaft; the nut for fixing the resistor body and the shaft support portion to the resin plate; and a washer disposed on the front surface side of the resin plate together with the nut; the shaft support portion includes a cylindrical portion having an outer peripheral surface on which a male thread with which the nut engages is formed and a part of the rotation shaft is disposed on an inner peripheral side thereof, a portion of the cylindrical portion is disposed in the first through hole and on an inner peripheral side of the washer; the washer contacts the front surface of the resin plate, an outer diameter of the washer is smaller than an outer diameter of the knob when viewed in the axial direction of the rotary shaft, 4. The electric guitar according to claim 3, wherein the diameter of the second through hole is approximately the same as the outer diameter of the washer.

5. A resin plate with a protective film attached to the front surface of an electric guitar body, a first through hole is formed in which a part of a variable resistor included in a volume control unit for adjusting the volume of the electric guitar and a sound quality control unit for adjusting the sound quality of the electric guitar is disposed; the protective film is attached to the front surface of the resin plate, a second through hole having a diameter larger than that of the first through hole is formed in the protective film; A resin plate with a protective film, characterized in that the first through hole is disposed within the second through hole when viewed from the thickness direction of the resin plate.

6. 6. The resin plate with a protective film according to claim 5, further comprising the volume control section and the tone control section.

Citation Information

Patent Citations

  • Inspecting method of crack of material to be machined

    JP1981076044A