Harp inflexion button
By using the limiting component to cooperate with the limiting hole of the base, the problem of loose threaded connection of the harp pitch changer knob was solved, the string tension was accurately controlled, and the stability and durability of the pitch changer knob were improved.
Patent Information
- Application Number
- CN202422339151.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-09-25
AI Technical Summary
The existing harp's pitch-changing knobs are prone to loosening, causing the handle to fall off, affecting string tension control, and consequently affecting pitch accuracy.
The limit component is matched with the limit hole of the base to restrict the rotation of the handle. The use of knurled screws and limit groove design ensures a stable connection between the limit component and the base, prevents loosening, and increases the accuracy of string tension control.
The stability and accuracy of the pitch changer have been improved, ensuring accurate control of string tension and increasing the durability and intonation stability of the pitch changer.
Smart Images
Figure CN223582666U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to harp sound changing technical field, concretely relates to a harp sound changing knob. BACKGROUND
[0002] The harp is a very old plucked string instrument of the Chinese Han nationality, which is widely spread among the folk in ancient times in addition to the court music, and is commonly used for solo, duet, dance accompaniment and application in large-scale national orchestras. The modern harp generally has a tuning mechanism, which processes the harp in ascending and descending pitch, so that the harp plays a variety of tones, enhancing the expressiveness of the harp.
[0003] The sound changing knob is a common tuning mechanism, which is usually located on the body of the harp. By rotating the sound changing knob, the effective string length and tension of the string are changed to realize the change of the pitch of the string. The existing sound changing knob usually includes a base, a handle and a string pressing assembly. The base is arranged on the body of the harp, and the string pressing assembly is arranged on the handle. The handle is installed on the base by means of a countersunk screw, that is, the threaded end of the countersunk screw penetrates through the base, one end of the countersunk screw is connected with the handle, and the other end of the countersunk screw is threadedly connected with a nut. The operator can operate the string pressing assembly by turning the handle to change the effective length and tension of the string. When a certain force is applied, the handle may rotate the countersunk screw, which may cause the nut to loosen, further causing the handle to fall off and unable to be normally used, and the tension of the string is difficult to be accurately controlled, thereby affecting the pitch. SUMMARY
[0004] The utility model aims at providing a harp sound changing knob to solve the problems mentioned in the background.
[0005] To solve the above technical problems, the utility model provides a harp sound changing knob, which comprises a base and a handle. The base is installed on the body of the harp. The handle is provided with a string pressing assembly. A limiting hole is formed in the base. The handle and the base are connected through a limiting piece. The first end of the limiting piece is located on the first side of the base and connected with the handle. The limiting hole and the middle part of the limiting piece are matched to limit the relative rotation of the limiting piece and the base. The second end of the limiting piece is located on the second side of the base and detachably connected with the base.
[0006] Further, the limiting piece is a knurled screw, which comprises a smooth part, a straight knurled part and a threaded part in sequence. The smooth part is rotationally connected with the handle. The straight knurled part is interference-fitted with the limiting hole. The threaded part is threadedly connected with a nut.
[0007] Further, a string pillow is mounted on the base, the string pressing assembly comprises a string pressing pin and a string pressing sleeve, the string pressing pin is mounted on the handle and parallel to the string pillow, and the string pressing sleeve is sleeved on the string pressing pin and corresponds to the string pillow.
[0008] Further, a positioning pin and a positioning sleeve are further included, a limiting slot is formed on the handle and faces inward along the outer side and opens to the corresponding side of the base, a first end of the positioning pin is connected with the base, a second end of the positioning pin is located between the base and the limiting slot, and the positioning sleeve is sleeved on the second end of the positioning pin and corresponds to the limiting slot.
[0009] Further, a first gasket is further arranged between the base and the handle, the first gasket is sleeved on the knurled screw
[0010] Further, a second gasket is further arranged between the handle and the knurled screw
[0011] Further, the second gasket is a tapered gasket with a diameter gradually decreasing from the outside to the inside, the outer surface of the tapered gasket corresponds to the handle, and the inner surface of the tapered gasket corresponds to the nut end of the knurled screw
[0012] The utility model discloses the beneficial effects that: the utility model discloses through setting up the limiting piece connection base and handle, and the limiting piece and the limiting hole on the base cooperate to make the limiting piece not be driven by the handle, thereby rotating in the limiting hole, provide higher stability and accuracy than ordinary thread connection. The limiting piece and the base connect and cooperate, eliminate the possibility of driving the limiting piece to rotate when the handle rotates, and at the same time, eliminate the possibility of loosening the limiting piece, so that the tension of the string is accurately controlled, and the durability of the tone knob is increased. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 It is the three-dimensional structure schematic diagram of the utility model embodiment.
[0014] Figure 2 It is the left view structure schematic diagram of the utility model embodiment.
[0015] Figure 3 It is the explosion structure schematic diagram of the utility model embodiment.
[0016] Figure 4 It is the section structure schematic diagram of the utility model embodiment.
[0017] Among them: 1, base;2, handle;3, string pressing assembly;4, limiting piece;5, nut;6, string pillow;7, positioning pin;8, positioning sleeve, 9, first gasket;10, tapered gasket.
[0018] 11. Limiting hole; 21. Limiting groove; 31. String pin; 32. String sleeve; 40. Knurled screw; 41. Smooth part; 42. Straight knurled part; 43. Threaded part. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only one embodiment of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] To make the objectives, technical solutions and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments.
[0021] In the following description, references to "an embodiment," "an embodiment," "an example," "example," etc., indicate that the described embodiment or example may include a particular feature, structure, characteristic, property, element, or limitation, but not every embodiment or example necessarily includes that particular feature, structure, characteristic, property, element, or limitation. Furthermore, the repeated use of the phrase "an embodiment according to this application," while possibly referring to the same embodiment, does not necessarily refer to the same embodiment.
[0022] like Figures 1-4 As shown, this utility model discloses a harp pitch-changing knob, which includes a base 1 and a handle 2. The base 1 is mounted on the body of the harp, and the handle 2 is provided with a string-pressing assembly 3. A limiting hole 11 is opened on the base 1. The handle 2 and the base 1 are connected by a limiting member 4. The first end of the limiting member 4 is located on the first side of the base 1 and is connected to the handle 2. The limiting hole 11 cooperates with the middle part of the limiting member 4 to limit the relative rotation of the limiting member 4 and the base 1. The second end of the limiting member 4 is located on the second side of the base 1 and is detachably connected to the base 1. That is, the cooperation between the limiting member 4 and the limiting hole 11 prevents the limiting member 4 from being driven by the handle 2, thereby allowing it to rotate within the limiting hole 11. In the embodiment, the fit between the limiting member 4 and the limiting hole 11 on the base 1 can be achieved by clearance fit, interference fit, pin connection and key connection, etc. For example, the limiting hole 11 can be a round hole or a square hole, etc. The middle part of the limiting member 4 can be set into a triangular, quadrilateral, elliptical or other shapes to fit with the limiting hole 11, or it can be set into a form with a knurled key or knurled key to fit with the limiting hole 11.
[0023] The utility model discloses a limit piece 4 is connected with base 1 and handle 2 through setting, and limit piece 4 and the limit hole 11 on base 1 cooperate so that limit piece 4 is not driven by handle 2, thereby rotating in limit hole 11, provide higher stability and accuracy than ordinary thread connection.
[0024] In an embodiment, limit piece 4 is knurled screw 40, and knurled screw 40 includes smooth part 41, straight knurled part 42 and threaded part 43 in sequence, smooth part 41 is rotatably connected with handle 2, straight knurled part 42 is interference fit with limit hole 11, and threaded part 43 is threadedly connected with nut 5.
[0025] In the embodiment, threaded part 43 and straight knurled part 42 of knurled screw 40 are sequentially threaded through handle 2 so that handle 2 is located on smooth part 41, threaded part 43 of knurled screw 40 is threaded through limit hole 11 on base 1 so that straight knurled part 42 is interference fit with limit hole 11, and finally fixed through nut 5 to prevent handle 2 from being separated.
[0026] In an embodiment, base 1 is provided with bridge pin 6. String pressing assembly 3 includes string pressing pin 31 and string pressing sleeve 32, string pressing pin 31 is installed on handle 2 and parallel to bridge pin 6, and string pressing sleeve 32 is sleeved on string pressing pin 31 and corresponds to bridge pin 6. In the embodiment, annular grooves corresponding to strings are arranged on bridge pin 6 and string pressing sleeve 32, and bridge pin 6 and string pressing sleeve 32 are used in cooperation, so that the operator can move string pressing pin 31 and string pressing sleeve 32 up and down by rotating handle 2 to make the strings in the state of being pressed or not pressed, thereby adjusting the pitch of the strings and ensuring the stable vibration and accuracy of the pitch of the strings.
[0027] In an embodiment, it further includes positioning pin 7 and positioning sleeve 8, limit groove 21 is opened on handle 2 and faces inward along the outer side and opens on the corresponding side of base 1, the first end of positioning pin 7 is connected with base 1, the second end of positioning pin 7 is located between base 1 and limit groove 21, and positioning sleeve 8 is sleeved on the second end of positioning pin 7 and corresponds to limit groove 21. The design is used to keep the relative position of handle 2, prevent displacement of handle 2 due to external force in the use process, and ensure the stability and accuracy of the use of the tone knob.
[0028] In an embodiment, first gasket 9 is further arranged between base 1 and handle 2, and first gasket 9 is sleeved on knurled screw 40 to reduce the damage of the friction force generated by the direct contact of base 1 and handle 2 to the device.
[0029] In one embodiment, a second washer is provided between the handle 2 and the knurled screw 40 to reduce the damage to the device caused by the friction between the knurled screw 40 and the handle 2.
[0030] In one embodiment, the second washer is a tapered washer 10 with a diameter gradually decreasing from outside to inside, the outer surface of the tapered washer 10 is adapted to the handle 2, and the inner surface of the tapered washer 10 is adapted to the cap end of the knurled screw 40. That is, in this embodiment, a tapered groove is formed on the handle 2, and the cap end of the knurled screw 40 is also tapered. Because the tapered washer 10 can reduce the pressure concentration point on the handle 2 and increase the contact area, thereby uniformly distributing the pressure, the direct friction between the cap end and the handle 2 is reduced, and the wear is reduced.
[0031] The working principle of the embodiment of the utility model is as follows:
[0032] First, the base 1 is installed on the body of the piano, the tapered washer 10 is sleeved on the cap end of the knurled screw 40, and then the threaded part 43 and the straight knurled part 42 of the knurled screw 40 are sequentially inserted through the handle 2, so that the handle 2 is located behind the smooth part 41, and the first washer 9 is sleeved on the knurled screw 40. Then the threaded part 43 of the knurled screw 40 is inserted through the limiting hole 11 on the base 1, so that the straight knurled part 42 is in straight interference fit with the limiting hole 11, the first washer 9 is attached to the base 1, and finally the knurled screw 40 is fixed by the nut 5.
[0033] When the staff rotates the handle 2, the string pressing pin 31 and the string pressing sleeve 32 are driven to move up and down, cooperating with the bridge 6, the positioning pin 7 and the positioning sleeve 8, so that the strings are in a pressed or unpressed state, thereby changing the effective length and tension of the strings and realizing the adjustment of the pitch of the strings.
[0034] The utility model discloses a limiting piece 4 is connected with base 1 and handle 2, and the limiting piece 4 is cooperated with the limiting hole 11 on the base 1 to make the limiting piece 4 not be driven by handle 2, thereby rotating in the limiting hole 11, and higher stability and accuracy than ordinary threaded connection are provided. The limiting piece 4 is connected with the base 1, which eliminates the possibility of the limiting piece 4 being driven to rotate when the handle 2 rotates, and also eliminates the possibility of the limiting piece 4 being loose, so that the tension of the strings is accurately controlled, and the durability of the string changing knob is increased.
[0035] The above description of the disclosed embodiments is for a person skilled in the art to implement or use the utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A harp tuning peg comprising a base and a handle, the base being mounted on a neck of a harp, the handle having a string pressing assembly thereon, characterized in that: The base is provided with a limiting hole, the handle is connected with the base through a limiting member, a first end of the limiting member is located on a first side of the base and connected with the handle, the limiting hole is matched with a middle part of the limiting member to limit relative rotation of the limiting member and the base, and a second end of the limiting member is located on a second side of the base and detachably connected with the base.
2. A harp variable tuning button according to claim 1, wherein: The limiting member is a knurled screw, the knurled screw comprises a smooth part, a straight knurled part and a threaded part in sequence, the smooth part is connected with the handle, the straight knurled part is in interference fit with the limiting hole, and the threaded part is threadedly connected with a nut.
3. A harp variable tuning button according to claim 1, wherein: The base is provided with a string pillow, the string pressing assembly comprises a string pressing pin and a string pressing sleeve, the string pressing pin is installed on the handle and parallel to the string pillow, and the string pressing sleeve is sleeved on the string pressing pin and corresponds to the string pillow.
4. A harp variable tuning button according to claim 1, wherein: The base is provided with a string pillow, the string pressing assembly comprises a string pressing pin and a string pressing sleeve, the string pressing pin is installed on the handle and parallel to the string pillow, and the string pressing sleeve is sleeved on the string pressing pin and corresponds to the string pillow.
5. A harp variable tuning button according to claim 2, wherein: The base is provided with a string pillow, the string pressing assembly comprises a string pressing pin and a string pressing sleeve, the string pressing pin is installed on the handle and parallel to the string pillow, and the string pressing sleeve is sleeved on the string pressing pin and corresponds to the string pillow.
6. A harp variable tuning button according to claim 2, wherein: The base and the handle are further provided with a first gasket, and the first gasket is sleeved on the knurled screw.
7. A harp variable tuning button according to claim 6, wherein: The handle and the knurled screw are further provided with a second gasket. The second gasket is a tapered gasket with a diameter gradually decreasing from outside to inside, an outer surface of the tapered gasket is matched with the handle, and an inner surface of the tapered gasket is matched with a nut end of the knurled screw.