A cleaner for the resonating cavity of an erhu (a two-stringed bowed instrument).

Abstract

This utility model discloses a cleaner for the resonating cavity of an erhu (a two-stringed bowed instrument), relating to the field of cleaner technology. It includes: a handle, which is elongated; a brush, fixedly mounted on one end of the handle; and a movable sleeve, slidably fitted onto the handle and capable of moving along the axial direction of the handle. The movable sleeve has a planar cleaning position and a corner cleaning position. In the planar cleaning position, the movable sleeve is located in the middle of the handle, and the brush is completely exposed outside the movable sleeve. When the movable sleeve is switched to the corner cleaning position, grooves on it allow some brush bristles to extend out, and these grooves extend axially, facilitating bristle extension and providing some support. Multiple grooves allow bristles to extend from different angles, adapting to corner cleaning needs.

Description

Technical Field

[0001] This utility model relates to the field of cleaning device technology, specifically a cleaner for the resonating cavity of an erhu (a two-stringed bowed instrument). Background Technology

[0002] As a representative of traditional Chinese bowed string instruments, the erhu occupies a pivotal position in the field of folk music due to its unique timbre and rich expressiveness. The cleanliness of the erhu's soundbox, as the core component for resonance and sound production, directly affects the instrument's sound quality and lifespan.

[0003] Most erhu soundboxes currently available adopt a regular polygonal structure. While this structure provides a stable space for sound resonance, dust, rosin residue, and other impurities easily accumulate on the flat surfaces and corners inside the soundbox during daily use and maintenance. If not cleaned regularly, these impurities will not only affect sound transmission and resonance but may also corrode the inner wall of the soundbox, shortening the instrument's lifespan.

[0004] Currently, most tools on the market for cleaning the erhu's soundbox are ordinary brushes. While these brushes are effective at cleaning the flat surfaces of the soundbox, they have significant limitations when dealing with the corner areas of the polygonal soundbox. Due to the unique structure of the polygonal corners, an interaction force is generated between the brushes on both sides of the corner and the side wall of the soundbox during cleaning. This force prevents the brush bristles at the corners from making sufficient contact with the corner areas, thus affecting the cleaning effect and making it difficult to thoroughly remove impurities from the corners, causing inconvenience for erhu maintenance. Utility Model Content

[0005] In view of the shortcomings of the existing technology, this utility model provides a cleaner for the resonating cavity of the erhu.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A cleaner for the resonating cavity of an erhu (a two-stringed bowed instrument), comprising:

[0008] A handle, wherein the handle is an elongated structure;

[0009] A brush is fixedly mounted on one end of the handle;

[0010] A movable sleeve is slidably fitted onto the handle and can move along the axial direction of the handle. The movable sleeve has a planar cleaning position and a corner cleaning position.

[0011] In the planar cleaning position, the movable sleeve is located in the middle of the handle, and the brush is completely exposed outside the movable sleeve;

[0012] At the corner cleaning position, the movable sleeve at least partially covers the brush, and the movable sleeve has at least one groove, through which some of the brush bristles can extend when at the corner cleaning position.

[0013] Preferably, there is a gap between the movable sleeve and the handle, the radial dimension of which is configured to allow the movable sleeve to slide smoothly on the handle.

[0014] Preferably, the grooves are provided in multiple locations and are evenly distributed along the circumference of the movable sleeve.

[0015] Preferably, the width of the plurality of grooves is reduced circumferentially.

[0016] Preferably, the outer diameter of the movable sleeve is smaller than the maximum outer diameter of the brush in its natural state.

[0017] Preferably, the groove extends along the axial direction of the movable sleeve.

[0018] Preferably, the operating end of the handle is slidably fitted with an operating ring, and a plurality of connecting rods located around the handle are fixed on one side of the operating ring, and the other end of the connecting rods is fixedly connected to the movable sleeve.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] 1. Enhance the targeting and efficiency of corner cleaning: When the movable sleeve is switched to the corner cleaning position, the groove on it allows some of the bristles to extend out. The groove extends along the axis, which facilitates the bristle extension and provides a certain support. Multiple grooves extend the bristles from different angles to adapt to corner cleaning needs.

[0021] 2. The groove width is reduced circumferentially, allowing users to select the appropriate bristles according to the size and narrowness of the corner, thus improving the targeting and efficiency of cleaning;

[0022] 3. Expand the cleaning range: When the moving sleeve moves to the position of the handle at the end of the brush, the bristles at the end of the brush are squeezed and extended toward the end of the handle. The handle end can use these bristles to clean the corresponding parts of the resonance cavity, further expanding the cleaning range. Attached Figure Description

[0023] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0024] Figure 1 This is a three-dimensional structural diagram of the Erhu resonator cavity cleaner of this utility model;

[0025] Figure 2 This is a three-dimensional structural diagram of the corner cleaning position of the Erhu resonator cavity cleaner of this utility model;

[0026] Figure 3 This is a front view of the Erhu resonator cleaner of this utility model;

[0027] Figure 4 This is a cross-sectional view (AA) of the erhu resonator cleaner of this utility model;

[0028] Figure 5 This utility model is for cleaning the resonator cavity of an erhu (a two-stringed bowed instrument). Figure 4 A schematic diagram of the structure of A in the middle.

[0029] The diagram shows the following labels: 1. Handle; 2. Brush; 3. Moving sleeve; 4. Groove; 5. Gap. Detailed Implementation

[0030] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0031] Example

[0032] like Figure 1-5 As shown, a cleaner for the resonating cavity of an erhu (a two-stringed bowed instrument) includes:

[0033] Handle 1: It adopts a slim design and is made of non-slip and durable material, which makes it easy for users to hold it firmly and provides a reliable support point for cleaning operations, ensuring that the cleaning device can be flexibly controlled in terms of movement direction and force during the cleaning process.

[0034] Brush 2: It is tightly fixed to one end of the handle 1. The bristles are soft and elastic, which can effectively clean dust and impurities without scratching the inner wall of the resonance cavity. It can reach into every corner of the resonance cavity.

[0035] Movable sleeve 3: Slidably fitted onto handle 1, it can move freely along the axis of handle 1. Changing its position switches the cleaner's operating mode, offering two states: a flat surface cleaning position and a corner cleaning position.

[0036] Groove 4: Located on the movable sleeve 3, it is an important structure for corner cleaning. When the movable sleeve 3 is in the corner cleaning position, some of the bristles of the brush 2 can extend through the groove 4, allowing for precise application to the corner area of ​​the resonance cavity.

[0037] Gap 5: It exists between the movable sleeve 3 and the handle 1. Its radial dimension is such that it can ensure that the movable sleeve 3 slides freely on the handle 1, but the movable sleeve 3 will not shake due to excessive gap, thus affecting the cleaning accuracy.

[0038] Connecting rod 6 and operating ring 7: The operating end of the handle 1 is slidably fitted with an operating ring 7. Several connecting rods 6 located around the handle 1 are fixed on one side of the operating ring 7. The other end of the connecting rod 6 is fixedly connected to the movable sleeve 3. When inserting, the operating ring 7 is pushed, and the operating ring 7 pushes the movable sleeve 3 through the connecting rod 6, so that the movable sleeve 3 covers the brush 2, which facilitates the operation of the device when inserting it into the erhu resonance cavity. At the same time, after insertion, the movable sleeve 3 can also be operated through the operating ring 7, which is simple and convenient.

[0039] The movable sleeve 3 has multiple grooves 4, which are evenly distributed along the circumference of the movable sleeve 3. This design allows the cleaner to extend the bristles from different angles when cleaning corners, fully covering the corner area and avoiding cleaning dead corners.

[0040] The width of the multiple grooves 4 is set to decrease circumferentially, so that the appropriate width of the groove 4 can be selected for cleaning according to the size and narrowness of the resonant cavity corner, thereby improving the targeting and efficiency of cleaning.

[0041] The outer diameter of the movable sleeve 3 is smaller than the maximum outer diameter of the brush 2 in its natural state. This design ensures that when the movable sleeve 3 is in the planar cleaning position, the brush 2 can be fully extended and make full contact with the planar part of the resonance cavity, achieving efficient planar cleaning.

[0042] The groove 4 extends along the axial direction of the movable sleeve 3. This structure facilitates the smooth extension of the bristles and also ensures that the bristles have a certain support during the cleaning process, thereby improving the cleaning effect.

[0043] When the movable sleeve 3 moves to the position of the handle 1 at the end of the brush 2, the bristles at the end of the brush 2 are squeezed and extended toward the end of the handle 1, so that the end of the handle 1 can be used for cleaning.

[0044] When cleaning a flat surface, the movable sleeve 3 is in the flat cleaning position. Since the outer diameter of the movable sleeve 3 is smaller than the maximum outer diameter of the brush 2 in its natural state, the brush 2 can be fully extended and make full contact with the flat surface of the resonance chamber. The user holds the slender, non-slip, and durable handle 1, allowing for a stable grip and flexible control of the cleaner's direction and force. This enables the soft and flexible brush 2 to effectively clean dust and impurities from the flat surface without scratching the inner wall.

[0045] When cleaning corner areas is required, the movable sleeve 3 is slid along the axial direction of the handle 1 to switch to the corner cleaning position. Multiple circumferentially evenly distributed grooves 4 on the movable sleeve 3 function, allowing some bristles of the brush 2 to extend through these grooves 4. Because the grooves 4 extend axially along the movable sleeve 3, the bristles can extend smoothly and are supported during cleaning. Furthermore, the bristles extend from multiple grooves 4 at different angles. Simultaneously, the width of the multiple grooves 4 decreases circumferentially, allowing the user to select the appropriate width of the groove 4 corresponding to the bristles for cleaning the corner based on its size and narrowness, improving the targeting and efficiency of the cleaning. The gap 5 between the movable sleeve 3 and the handle 1 is designed with a reasonable radial dimension, ensuring smooth sliding of the movable sleeve 3 without excessive wobbling, thus guaranteeing accuracy during corner cleaning.

[0046] Furthermore, when the movable sleeve 3 moves to the position of the handle 1 at the end of the brush 2, the bristles at the end of the brush 2 are squeezed and extended toward the end of the handle 1. At this time, the end of the handle 1 can use these bristles to clean the corresponding parts of the resonance cavity, further expanding the cleaning range.

[0047] Enhanced corner cleaning targeting and efficiency: When the movable sleeve 3 is switched to the corner cleaning position, the groove 4 on it allows some of the bristles to extend out. The groove 4 extends axially, which facilitates the bristle extension and provides a certain support. Multiple grooves 4 extend the bristles from different angles to adapt to corner cleaning needs.

[0048] The groove 4 is designed with a circumferentially tapered width, allowing users to select the appropriate bristles based on the size and narrowness of the corner, thus improving the targeting and efficiency of cleaning.

[0049] The radial dimension of the gap 5 between the movable sleeve 3 and the handle 1 is reasonable, which ensures that the sleeve slides freely and avoids shaking due to excessive gap, thus ensuring the cleaning accuracy of corners.

[0050] Expanding the cleaning range: When the movable sleeve 3 moves to the position of the handle 1 at the end of the brush 2, the bristles at the end of the brush 2 are squeezed to extend toward the end of the handle 1. The end of the handle 1 can use these bristles to clean the corresponding part of the resonance cavity, further expanding the cleaning range.

[0051] Optimized user experience: The handle 1 features a slim design and is made of non-slip and durable material, making it easy for users to hold it firmly and flexibly control the direction and force of the cleaner's movement.

[0052] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A cleaner for the resonating cavity of an erhu (a two-stringed bowed instrument), characterized in that, include: Handle (1), wherein the handle (1) is an elongated structure; A brush (2) is fixedly mounted on one end of the handle (1); The movable sleeve (3) is slidably fitted onto the handle (1) and can move along the axial direction of the handle (1). The movable sleeve (3) has a planar cleaning position and a corner cleaning position. In the planar cleaning position, the movable sleeve (3) is located in the middle of the handle (1), and the brush (2) is completely exposed outside the movable sleeve (3); At the corner cleaning position, the movable sleeve (3) at least partially covers the brush (2), and at least one groove (4) is provided on the movable sleeve (3). At the corner cleaning position, some of the bristles of the brush (2) can extend through the groove (4).

2. The erhu resonator cleaner according to claim 1, characterized in that: There is a gap (5) between the movable sleeve (3) and the handle (1), the radial dimension of which is configured to allow the movable sleeve (3) to slide smoothly on the handle (1).

3. The erhu resonator cleaner according to claim 2, characterized in that: The groove (4) has multiple openings and is evenly distributed along the circumference of the movable sleeve (3).

4. A cleaner for the resonating cavity of an erhu (a two-stringed bowed instrument) according to claim 3, characterized in that: The width of the plurality of grooves (4) is reduced circumferentially.

5. A cleaner for the resonating cavity of an erhu (a two-stringed bowed instrument) according to claim 4, characterized in that: The outer diameter of the movable sleeve (3) is smaller than the maximum outer diameter of the brush (2) in its natural state.

6. A cleaner for the resonating cavity of an erhu (a two-stringed bowed instrument) according to claim 5, characterized in that: The groove (4) extends along the axial direction of the movable sleeve (3).

7. A cleaner for the resonating cavity of an erhu (a two-stringed bowed instrument) according to claim 5, characterized in that: The operating end of the handle (1) is slidably fitted with an operating ring (7), and a number of connecting rods (6) located around the handle (1) are fixed on one side of the operating ring (7). The other end of the connecting rods (6) is fixedly connected to the movable sleeve (3).

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