TWI514338B - A method of manufacturing a violin exercise apparatus - Google Patents

Description

Violin practice device and method of manufacturing same

The present invention relates to an exercise device for pulling a stringed instrument and a method of manufacturing the same, and more particularly to a violin practice device and a method of manufacturing the same.

Violin is one of the favorite instruments, beautiful sound and excellent emotional performance. It is an ideal instrument for solo. In recent centuries, violin instruments have been popular with musicians and listeners. The height of the tone is determined by the size, thickness and tension of the strings. The shorter, thinner and tighter the strings, the higher the sound produced. The strings extend from the bottom of the violin, across the bridge, to the end of the fingerboard with a string pillow. The principle of the violin's pronunciation is to pull the string or pluck the string, so that the air inside the body vibrates and resonates.

When the operator pulls the bow, the hand often shakes or bends the bow. If the bow is to run smoothly according to a straight line or other path without arbitrarily shaking, you need to imagine the bow path and the time-consuming and time-consuming practice. The bow makes the muscles of all parts of the body coordinated, stable and flexible, in order to control the bow to run on an ideal track to clean the strings and give a beautiful tone.

Traditionally, when learning the violin, some people use auxiliary equipment to help with learning. The auxiliary equipment is placed at the violin bow. The bow assister disclosed in Taiwan Patent No. 585337, which restricts the bow running in a straight line but does not It is convenient to change the string action; and Taiwan Patent No. 200529172, Taiwan Patent No. M433618, and Taiwan Patent No. M275504 disclose that by blocking the wall, when the player plays the bow, the bow is in a certain range from the bridge to the fingerboard. Operates vertically inside the strings. However, the bow still has a space that can be shaken up and down, making it difficult to acquire a stable bowing action.

Moreover, after the auxiliary equipment is erected on the violin, the position of the string is fixed, and it is impossible to change the front and rear positions of the bow, and it is impossible to perform the bow exercise on different tone positions.

Therefore, how to improve the ability of the hand to stabilize the bow when the straight bow and the string change continue to play, and practice the bow of different tone positions has become a problem that is currently being solved.

An object of one embodiment of the present invention is to provide a violin practice device and a method of manufacturing the same.

According to an embodiment of the invention, a method of manufacturing a violin practice device is provided, comprising the following steps. Provide at least one thick plate. A contour of the body structure is cut in the at least one thick plate. From the at least one thick plate The body structure is taken out and the body structure is formed. A bow assister is formed on the body structure, and the bow assister has at least one limit structure. A rail rod is coupled to the at least one limiting structure of the bow assisting device to form a bowing track through the rail rod and the bow assisting device.

In one embodiment, the step of providing at least one thick plate comprises: providing a first thick plate; and providing a second thick plate. The step of cutting a contour of the body structure in the at least one thick plate comprises: cutting a contour of a top plate of the body structure in the first thick plate; and cutting the second thick plate The outline of one of the bottom plates of the body structure. The step of removing the body structure from the at least one thick plate and forming the body structure includes: removing the top plate and the bottom plate of the body structure from the first thick plate and the second thick plate, respectively, and The top plate and the bottom plate of the body structure are combined and the body structure is formed.

In an embodiment, the step of cutting out the contour of the top plate of the body structure in the first thick plate further comprises: cutting more than the body structure in the first thick plate The first side portion of the top plate is connected to the first side portion, and the first side portion connecting the top plate includes at least one first bending line and a first top end portion. The step of forming the body structure includes bending the first bending lines such that the first side edges connecting the top plates are substantially perpendicular to the top plate, and the first top end portion is attached to the body structure On the upper or lower surface of the bottom plate.

In an embodiment, the step of cutting the contour of the bottom plate of the body structure in the second slab further comprises: cutting at least the consistent perforation. The step of forming the body structure further includes passing the first side edges connecting the top plates through the through holes.

In an embodiment, the step of cutting out the contour of the bottom plate of the body structure in the second slab further comprises: further cutting out the second side of the body structure connecting the bottom plate The contour of the edge portion, wherein the second side portions connecting the bottom plate further comprise at least one second bending line and a second top end portion. The step of forming the body structure further includes bending the second bending lines such that the second side portion is substantially perpendicular to the bottom plate, and attaching the second top end portion to the upper surface of the top plate of the body structure or On the lower surface.

In one embodiment, the step of cutting a contour of the body structure in the at least one thick plate further comprises: contouring a bow assister in the at least one thick plate.

In an embodiment, the step of cutting a contour of a top plate of the body structure in the first thick plate further comprises: cutting a contour of a bow assister in the first thick plate, wherein The contour of the bow assisting device includes at least one cutting line and a third bending line, wherein a part of the cutting lines is used to form a base, and another part of the cutting lines is used to form at least one opening, wherein the at least one opening An opening is the at least one limiting structure.

In an embodiment, the base includes a first fixed wall and a second fixing wall, and the step of forming a bow assisting device on the body structure comprises: bending the third bending lines to form the first fixing wall extending outward from the top plate and the first And fixing the thick plate in the at least one opening portion away from the first fixed wall and the second fixed wall to form the at least one limiting structure.

In an embodiment, the step of cutting a contour of a top plate of the body structure in the first thick plate further comprises: cutting a contour of a bow assister in the first thick plate, wherein The contour of the bow assisting device comprises at least one cutting line and at least one third bending line, wherein the at least one third bending line and a part of the cutting lines are used to form a base, wherein the base comprises at least one connection Set up. The step of forming a bow assisting device on the body structure further comprises: bending the at least one third bending line to form the at least one connecting portion; and placing a cross bar at the at least one connecting portion And connecting the rail rod to the crossbar.

In an embodiment, the step of cutting a contour of the body structure in the at least one thick plate further comprises: further cutting at least one fixed structure of the body structure in the at least one thick plate profile. The step of forming a bow assister on the body structure includes placing the bow assister on the fixed structure.

In an embodiment, the manufacturing method of the violin practice device further includes: cutting at least one first fixed wall in another thick plate, wherein the The first fixed wall includes a fixing portion. The step of forming a bow assisting device on the body structure includes fixing the fixing portion of the at least one first fixing wall to the fixing structure.

In one embodiment, the at least one fixing structure is an opening, and the step of forming a bow assisting device on the body structure comprises: inserting the fixing portion of the at least one first fixing wall into the In the opening.

In an embodiment, the at least one limiting structure is an opening, and the opening has a shape of a circle or a U shape.

According to an embodiment of the invention, a violin practice device is provided, comprising a body structure, a bow assister and a track bar. The bow assister has at least one limit structure and is disposed on the body structure. The rail rod is coupled to the at least one limiting structure of the bow assisting device, thereby forming a bowing track through the rail rod and the bow assisting device.

In an embodiment, the at least one limiting structure comprises a plurality of openings. The bow assisting device includes a first fixed wall and a second fixed wall, and the openings are located at the first fixed wall and the second fixed wall. And the rail rod is connected to the openings, so as to form a bow rail through the rail rod and the openings.

The violin practice device provided by the present invention enables the operator to utilize the track rod specific by using the ideal bowing path which is originally only found in the imagination. The ground is set up and the stability and flexibility required for the hand to learn the piano by pushing the track bar back and forth or pushing the track bar kit back and forth; and remembering the state and path of the hand to transfer the learning and dynamic memory And use the actual string to get the correct bow posture and ideal sound.

100‧‧‧ Bow assist

101‧‧‧Base

101a‧‧‧Contacts

101b‧‧‧Contacts

102‧‧‧crossbar

102a‧‧‧ first end

102b‧‧‧second end

102c‧‧‧Connecting Department

103‧‧‧Track rod

103a‧‧‧End

104‧‧‧ kit

110‧‧‧Body structure

111‧‧‧ top board

121‧‧‧Limited structure

122‧‧‧Fixed wall

122a‧‧‧Fixed Department

131‧‧‧ cutting line

132‧‧‧Bending line

150‧‧‧ level

200‧‧•Violin practice device

211‧‧‧ top board

212‧‧‧ Side

212a‧‧‧Top part

221‧‧‧floor

222‧‧‧ Side

222a‧‧‧Top part

232‧‧‧Bend line

235‧‧‧through holes

236‧‧‧Fixed structure

1 is a perspective view of a violin exercise device according to an embodiment of the present invention.

2 shows a perspective view of a bow assister in accordance with an embodiment of the present invention.

Fig. 3A is a schematic view showing a top plate of a violin exercise device according to an embodiment of the present invention.

Fig. 3B is a schematic view showing the bottom plate of the violin practice device according to an embodiment of the present invention.

Fig. 4 is a view showing the top plate of the violin exercise device according to an embodiment of the present invention.

Fig. 5 is a view showing the top plate of the violin practice device according to an embodiment of the present invention.

Fig. 6A is a view showing the outline of a bow assisting device of a violin practice device according to an embodiment of the present invention.

6B shows a violin practice device according to another embodiment of the present invention. Schematic diagram of the outline of the bow assister.

1 is a perspective view of a violin exercise device according to an embodiment of the present invention. As shown in FIG. 1, the violin practice device 200 includes a body structure 110, a bow assist device 100, and a track bar 103. The bow assisting device 100 is disposed on the body structure 110 and has a plurality of limiting structures 121. The rail rod 103 is coupled to at least one of the limiting structures 121. The rail rod 103 is restricted by the limiting structure 121 and cannot move laterally; it can only move in the direction guided by the limiting structure 121, that is, the rail rod 103 cannot move toward the extending direction V of the body structure 110; The lateral direction H of the body structure 110 moves. If it is necessary to change the position of the rail rod 103 in the extending direction V of the body structure 110, it is only necessary to disengage the rail rod 103 from the original limiting structure 121 and replace it with another new limiting structure 121.

Since the rail rod 103 cannot move toward the extending direction V of the body structure 110; it can only move in the lateral direction H of the body structure 110, thereby improving the ability of the hand to stabilize the bow when the straight bow is transported. Since the position of the track bar 103 to be in the extending direction V of the body structure 110 can be changed, the ability of the hand to stabilize the bow when the position is continued to be pulled is improved.

Hereinafter, an embodiment of the bow assisting device 100 and the rail rod 103 will be more specifically described, but it should be understood that the present invention is not limited to the transport. The structure of the bow assistor 100 and the rail rod 103 can be changed and modified in accordance with the following description.

As shown in FIG. 1, the bow assist device 100 can include a base 101. In an embodiment, the base 101 can at least secure the wall. In the embodiment of FIG. 1 , the base 101 includes a first fixed wall 122 and a second fixed wall 122 . Each of the fixed walls 122 includes a limiting structure 121 corresponding to each other. The limiting structure 121 can be an opening. The first fixed wall 122 and the second fixed wall 122 are spaced apart by a predetermined distance, so that when the rail rod 103 is inserted into the first fixed wall 122 and the second fixed wall 122, the rail rod 103 cannot move toward the extending direction V of the body structure 110. It is only possible to move in the lateral direction of the body structure 110. In one embodiment, only one fixed wall may be provided, and the thickness of the fixed wall may be such that the limiting structure 121 that is an opening is sufficient to limit the lateral movement of the rail rod 103.

In the embodiment of Figure 1, it is circular. In other embodiments, it may be U-shaped or other shapes.

2 shows a perspective view of a bow assister in accordance with an embodiment of the present invention. As shown in FIG. 2, the bow assisting device 100 includes a base 101, a crossbar 102, and a rail rod 103. The base 101 has at least one attachment portion 101a (in one embodiment, the base 101 may further have an attachment portion 101b). The crossbar 102 has opposite first and second ends 102a, 102b, and at least one of the first end 102a and the second end 102b. The connecting portion 102c and the crossbar 102 are provided on the attaching portion 101a by the first end 102a (in one embodiment, the crossbar 102 is provided on the attaching portion 101b by the second end 102b). The rail rod 103 has an end portion 103a for connecting the connecting portion 102c. In an embodiment, the bow assisting device 100 may further include a sleeve 104 for being sleeved on the rail rod 103, wherein the sleeve 104 is for the user to hold, and the rail rod 103 is in the length direction (ie, the extending direction) H) may have a guiding structure to fix the position or angle of the kit relative to the rail rod.

In the embodiment of FIG. 2, the crossbar 102 extends toward the extending direction V of the body structure 110, and the rail bar 103 is detachably fixed to one of the plurality of connecting portions 102c. The rail rod 103 extends toward the lateral direction H of the body structure 110, and the user can hold the sleeve 104, and the sleeve 104 is guided by the rail rod 103 to move in the longitudinal direction of the rail rod 103 (ie, the extension direction H) for use. The person can remember the position and angle of the straight bow to improve the ability of the hand to stabilize the bow when transporting the straight bow.

Hereinafter, a method of manufacturing the violin practice device according to an embodiment of the present invention will be specifically described.

In an embodiment of the invention, the violin practice device can be made using at least one thick plate. Fig. 3A is a schematic view showing a top plate of a violin exercise device according to an embodiment of the present invention. Fig. 3B is a schematic view showing the bottom plate of the violin practice device according to an embodiment of the present invention. The manufacturing method of the violin exercise device includes The following steps.

Step S02: providing at least one thick plate.

Step S04: The outline of the body structure 110 is cut out in the at least one thick plate.

Step S06: The body structure 110 is taken out from the at least one thick plate, and the body structure 110 is formed.

Step S08: The bow assisting device 100 is formed on the body structure 110.

Step S10: The rail rod 103 is attached to the bow assisting device 100.

In an embodiment, step S12 may be further included: at least one level 150 is placed on the body structure 110 to indicate a horizontal state. In one embodiment, the level 150 is elongated and the major axis direction of the level 150 extends along the direction V of the body structure 110. Preferably, the level 150 is placed on the neck. In one embodiment, two levels 150 can be used, wherein the long axis direction of one level 150 extends along the extending direction V of the body structure 110, and the long axis direction of the other level 150 is along the lateral direction H of the body structure 110. Extending so that the horizontal state of the extension direction V and the lateral direction H can be simultaneously indicated. In one embodiment, the level 150 can also be circular, and has a circular indicator at the center of the circle for simultaneously indicating multiple directions (including the extension direction V and the lateral direction H). The level of the state.

It will be appreciated that the violin practice device 200 can be made with a thickness of the at least one slab having a sufficient thickness. Moreover, the present invention does not limit the material of the thick plate. The material of the thick plate may be a thick cardboard, a styrofoam, a plastic plate, or a combination of the above materials.

In the case where the thickness of the material used for the thick plate is relatively thin, the plurality of thick plates can be used to form the body structure 110. The manufacturing method will be more specifically described below.

In an embodiment, step S02 may include: step S22: providing a first thick plate; and step S24: providing a second thick plate.

In an embodiment, step S04 includes: step S42: cutting the outline of the top plate 211 of the body structure 110 in the first thick plate, as shown in FIG. 3A; and step S44: cutting the second thick plate The outline of the bottom plate 221 of the body structure 110 is drawn, as shown in FIG. 3B. In an embodiment, step S06 includes: step S62: removing the top plate 211 of the body structure 110 from the first thick plate and the second thick plate, respectively. And the bottom plate 221, and the top plate 211 and the bottom plate 221 of the body structure 110 are combined, and the body structure 110 is formed.

In an embodiment, step S42: further contouring the plurality of side portions 212 of the body structure 110 in the first slab, and the The side portion 212 includes at least one bending line 132 and a top end portion 212a. Step S62 further includes bending the bending lines 132 such that the side portions 212 are substantially perpendicular to the top plate 211, and attaching the top end portion 212a to the upper surface or the lower surface of the bottom plate 221 of the body structure 110.

In one embodiment, step S44: the contours of the plurality of side portions 222 of the body structure 110 are further cut out, and the side portions 222 on the bottom plate 221 further include at least the permanent through holes 235. Step S62 further includes passing the side portions 212 of the top plate 211 through the through holes 235.

In an embodiment, the side portions 222 of the bottom plate 221 further include at least one bending line 232 and a top end portion 222a. Step S62 further includes bending the bending lines 232 such that the side portions 222 are substantially perpendicular to the bottom plate 221, and attaching the top end portion 222a to the upper surface or the lower surface of the top plate 211 of the body structure 110.

In an embodiment, step S42 may further include cutting the contour of the bow assister 100 in the first thick plate, wherein the step of cutting the outline of the bow assistor 100 comprises: cutting the bow At least one cutting line (solid line in FIG. 3) 131 and at least one bending line 132 (dashed line in FIG. 3) of the outline of the assistor 100. A portion of the cutting lines 131 is used to form a first fixed wall 122 and a second fixed wall 122. The other portion of the cutting lines 131 is used to form at least one opening, that is, the limiting structure 121.

And in step S08, the bow assisting device 100 is formed on the body The step of the top plate 111 of the structure 110 includes: Step S82: bending the bending lines 132 to form a first fixing wall 122 and a second fixing wall 122 extending outward from the top plate 111. Preferably, the first fixed wall 122 and the second fixed wall 122 are perpendicular to the top plate 111.

Step S84: the thick plate located in the portion of the opening (the limiting structure 121) is separated from the first fixed wall 122 and the second fixed wall 122 to form a limiting structure 121 which is an opening.

As shown in FIG. 3A, in an embodiment, the bending line 132 forming the first fixing wall 122 and the second fixing wall 122 extends in the same direction as the extending direction V of the body structure 110, so that the first fixing wall 122 and the first fixing wall 122 The extending direction of the two fixed walls 122 is the same as the extending direction V of the body structure 110.

As shown in FIG. 4, in an embodiment, the extending direction of the bending line 132 forming the connecting portions 101a and 101b is perpendicular to the extending direction V of the body structure 110, so that the extending directions of the connecting portions 101a and 101b are perpendicular to the piano. The extension direction V of the body structure 110. At this time, the step of forming the bow assisting device 100 on the top plate 111 of the body structure 110 in step S08 further comprises: attaching the crossbar 102 to at least one of the connecting portions 101a and 101b; and connecting the rail rod 103 Crossbar 102.

As shown in FIG. 5, in an embodiment, step S42: further cutting at least one fixed structure of the body structure 110 in the first thick plate 236's outline. The step of forming the bow assisting device 100 on the body structure 110 in step S08 includes placing the bow assisting device 100 shown in FIG. 2 on the fixed structure 236. In an embodiment, the fixing structure 236 can be an opening. As shown in FIG. 6A, the first fixed wall 122 and the second fixed wall 122 are cut out in another thick plate, wherein the first fixed wall 122 and the second fixed wall 122 respectively include a fixing portion 122a. The step of forming the bow assisting device 100 on the body structure 110 in step S08 may include inserting the fixing portions 122a of the first fixing wall 122 and the second fixing wall 122 as shown in FIG. In the fixing structure 236, the first fixing wall 122 and the second fixing wall 122 are fixed in the fixing structure 236.

As shown in FIG. 6B, in an embodiment, the limiting structure 121 shown in FIG. 1 can be set to a U shape. It should be understood that the present invention is not limited to the shape of the limiting structure 121, and can be set to various shapes according to the track of the bow that the user desires to train. In addition, in an embodiment, different bow assisting devices 100 may also be provided. The rail rods 103 of each bow assisting device 100 can form different rails, and the user can change different bow assists according to their needs. 100.

In summary, the violin practice device provided by the present invention allows the operator to specifically erect the track bar by using an ideal bowing path which is originally only in the imagination, and pushes the track bar back and forth or pushes it back and forth. The track bar kit allows the hand to learn the stability and flexibility required to play the piano Force; and memorize this hand state and way, transfer this learning and dynamic memory and use it to actually pull the strings to get the correct bow posture and ideal sound.

In addition, in an embodiment, since at least one level 150 is further included, when the user holds the violin exercise device 200 with the left hand, the level of the violin exercise device 200 can be known through the level 150, and when the grip posture is found, At that time, the posture can be adjusted through the level 150.

In one embodiment, a method of manufacturing a violin practice device is provided that is capable of achieving a convenient manufacturing function and that is capable of producing an inexpensive violin exercise device.

In an embodiment, different bow assisters can be replaced according to user requirements, and various bow bows can be created.

The above embodiments are intended to illustrate the principles of the invention and its effects, and are not intended to limit the invention. Any of the above-described embodiments may be modified by those skilled in the art without departing from the spirit and scope of the invention. Therefore, the scope of protection of the present invention should be as set forth in the appended claims.

100‧‧‧ Bow assist

131‧‧‧ cutting line

132‧‧‧Bending line

211‧‧‧ top board

212‧‧‧ Side

212a‧‧‧Top part

Claims (13)

A manufacturing method of a violin practice device includes: providing at least one thick plate; cutting a contour of a body structure in the at least one thick plate, and cutting a contour of a bow assisting device in the at least one thick plate Removing the body structure from the at least one thick plate and forming the body structure; forming a bow assisting device on the body structure, and the bow assisting device has at least one limiting structure; A rail rod is coupled to the at least one limiting structure of the bow assisting device, thereby forming a bowing track through the rail rod and the bow assisting device. The method for manufacturing a violin practice device according to claim 1, wherein the step of providing at least one thick plate comprises: providing a first thick plate; and providing a second thick plate, wherein the at least one thick plate The step of cutting out the outline of a body structure in the board includes: cutting a contour of a top plate of the body structure in the first thick plate; and cutting the structure of the body body in the second thick plate a contour of the bottom plate, the step of removing the body structure from the at least one thick plate, and forming the body structure includes: removing the top plate of the body structure from the first thick plate and the second thick plate respectively And the bottom plate, and the top plate and the bottom plate of the body structure are combined, and the body structure is formed. The manufacturing method of the violin practice device according to the second aspect of the invention, wherein the step of cutting the contour of the top plate of the body structure in the first thick plate further comprises: further than the first thickness A plurality of contours of the first side portion of the top plate connecting the top plate are further defined in the board, and the first side portions connecting the top plates include at least one first bending line and a first top end The step of forming the body structure includes bending the first bending lines such that the first side edges connecting the top plates are substantially perpendicular to the top plate, and attaching the first top end portions to the body structure On the upper or lower surface of the bottom plate. The manufacturing method of the violin practice device according to the third aspect of the invention, wherein the step of cutting the outline of the bottom plate of the body structure in the second thick plate further comprises: cutting at least consistently The step of forming the body structure further includes passing the first side edges connecting the top plates through the through holes. The manufacturing method of the violin practice device according to the fourth aspect of the invention, wherein the step of cutting the contour of the bottom plate of the body structure in the second slab further comprises: further cutting out the a plurality of body structure structures connecting the second side portions of the bottom plate, wherein the second side portions connecting the bottom plates further comprise at least one second bending line and a second top end portion, The step of forming the body structure further includes bending the second bending lines such that the second side portion is substantially perpendicular to the bottom plate, and attaching the second top end portion to the upper surface of the top plate of the body structure or On the lower surface. The manufacturing method of the violin practice device according to the second aspect of the invention, wherein the step of cutting the contour of the top plate of the body structure in the first thick plate further comprises: the first thick plate The contour of the bow assister is cut out, wherein the contour of the bow assister comprises at least one cutting line and a third bending line, and a part of the cutting lines is used to form a base, the cutting lines Another part is for forming at least one opening, wherein the at least one opening is the at least one limiting structure. The method for manufacturing a violin practice device according to claim 6, wherein the base includes a first fixed wall and a second fixed wall, and the bow assisting device is formed on the body structure. The step of bending the third bending lines to form the first fixing wall and the second fixing wall extending outward from the top plate; and removing the thick plate located in the at least one opening portion from the first fixing The wall and the second fixed wall form the at least one limiting structure. The manufacturing method of the violin practice device according to the second aspect of the invention, wherein the step of cutting the contour of the top plate of the body structure in the first thick plate further comprises: the first thick plate The contour of the bow assister is drawn in the middle, wherein the contour of the bow assister comprises at least one cutting line and at least a third bending line, the at least one third bending line and a part of the cutting lines are used to form a base, wherein the base comprises at least one connecting portion, and a bow assisting device is formed on the piano The structural step further includes: bending the at least one third bending line to form the at least one attachment portion; attaching a crossbar to the at least one attachment portion; and connecting the rail rod to the crossbar . The method of manufacturing a violin practice device according to the first aspect of the invention, wherein the step of cutting a contour of the body structure in the at least one thick plate further comprises: further forming the at least one thick plate The contour of the at least one fixed structure of the body structure is cut, and the step of forming a bow assisting device on the body structure comprises: placing the bow assisting device on the fixed structure. The method for manufacturing a violin practice device according to claim 9, further comprising: cutting at least one first fixed wall in another thick plate, wherein the first fixed wall comprises a fixing portion, wherein The step of forming a bow assisting device on the body structure includes fixing the fixing portion of the at least one first fixing wall to the fixing structure. The manufacturing method of the violin practice device according to claim 1, further comprising: placing at least one level on the body structure. A violin practice device includes: a body structure, the body structure is cut to form a contour of a bow assister; a bow assisting device having at least one limiting structure and disposed on the body structure; a rail rod coupled to the at least one limiting structure of the bow assisting device for assisting through the rail rod and the bow assisting The device forms a bow track. The violin practice device of claim 12, wherein the at least one limiting structure comprises a plurality of openings, the bow assisting device comprises a first fixing wall and a second fixing wall, and the openings are located The first fixed wall and the second fixed wall are connected to the openings, so as to form a bowing track through the track bar and the openings.