CN214752893U

CN214752893U - Adjustable piano descent control device

Info

Publication number: CN214752893U
Application number: CN202120732948.1U
Authority: CN
Inventors: 杨达森
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-09
Filing date: 2021-04-09
Publication date: 2021-11-16
Anticipated expiration: 2031-04-09

Abstract

The utility model belongs to the technical field of the piano accessory, a ware slowly falls in adjustable piano is related to, its accommodation that has solved current ware slowly falls is less, the low scheduling problem of suitability. The piano descent control device comprises a descent control seat, an inner cavity used for filling damping oil is formed in the descent control seat, a rotating shaft which separates the inner cavity into two cavities is arranged in the inner cavity in a rotating mode, a boss is arranged on the outer side of the rotating shaft, an oil filtering groove is formed in the boss, an oil filtering handle is further sleeved on the boss, an adjusting seat matched with the rotating shaft is further arranged in the inner cavity of the descent control seat, a sealing piece is formed on the outer wall of the rotating shaft along the axial direction of the adjusting seat, an oil passing groove capable of communicating the two cavities is further formed in the adjusting seat, and an adjusting piece capable of adjusting the opening and closing degree of the oil passing groove is arranged on the adjusting seat. Compared with the prior art, the descent control device is more convenient in adjustment mode, wider in adjustment range and stronger in applicability.

Description

Adjustable piano descent control device

Technical Field

The utility model belongs to the technical field of the piano accessory, a ware slowly falls in adjustable piano is related to.

Background

Because the apron of piano is generally heavier, under the undamped condition, the piano apron descends fast and very easily presss from both sides and injures the finger or damages the piano, consequently, the piano ware that slowly falls also takes place, and the effect of piano ware that slowly falls lies in preventing that the fast decline of piano lid leads to the user injured, also prevents simultaneously that the piano lid from descending suddenly and lead to the piano impaired.

In order to solve the above problems, chinese patent CN205670435U discloses a slow descending device for piano, including a housing and a rotating shaft located inside the housing, the rotating shaft includes a front rotating shaft section and a rear rotating shaft section, a first boss is arranged between the front rotating shaft section and the rear rotating shaft section, the front rotating shaft section is provided with two symmetrical third bosses, a second boss matched with the third boss is arranged inside the housing, the third boss is provided with a first through groove, the side of the front rotating shaft section is provided with an oil drainage port, the third boss is provided with a rotating shaft wing, the cross section of the rotating shaft wing is in a concave structure, the wing on one side of the rotating shaft wing is provided with a third through groove, and damping oil is filled between the rotating shaft and the housing. The design of draining mouth and pivot wing makes when pivot anticlockwise rotation initial stage and clockwise rotation, and damping oil all does not produce damping or damping effect is very little, and only in the later stage of anticlockwise rotation, makes damping oil produce damping effect, produces the speed when neither influencing the piano lid and open and close the initial stage, can realize slowly falling the purpose effect again.

Although the prior art realizes the slow descending effect, the slow descending speed cannot be adjusted, so that the whole use is not flexible enough, and the applicability is poor.

In order to solve the regulation problem, the applicant has applied for a utility model patent named "adjustable descent control device (CN 211788111U)", which includes a descent control seat, the descent control seat is provided with an oil filtering groove rotating shaft and damping oil, an elastic seat body capable of expanding or reducing is arranged on the descent control seat outside the oil filtering groove rotating shaft, an adjusting hole is arranged on the elastic seat body and is coaxial with the descent control seat body, and an adjusting screw is inserted into the adjusting hole or is extracted, so that the elastic seat body expands or reduces, and the descent control speed is changed.

However, in the process of continuous research and improvement, the applicant finds that the structure can only be used for inserting or pulling out the adjusting screw during adjustment, the adjusting range is small, and the overall applicability is still to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at having the above-mentioned problem to current technique, provided an adjustable piano ware of slowly falling, the utility model aims to solve the technical problem that: how to improve the applicability of the adjustable piano descent control device.

The purpose of the utility model can be realized by the following technical proposal:

the utility model provides an adjustable piano ware that slowly falls, a serial communication port, the piano ware that slowly falls is including slowly falling the seat, slowly fall and offer the inner chamber that is used for filling damping oil in the seat, rotate in the inner chamber and be provided with the pivot of separating this inner chamber for two cavities, the outside of pivot is provided with the boss, the oil strain groove has been seted up on the boss, and still the cover is equipped with the oil strain on this boss and the leaf, slowly fall still be provided with in the inner chamber of seat with pivot matched with adjusts the seat, adjust the seat along the axial be provided with the outer wall of pivot forms sealed sealing member, and should adjust and still set up on the seat and can communicate two the oil passing groove of cavity, be provided with the regulating part that can adjust the switching degree of this oil passing groove on adjusting the seat.

The working principle is as follows: when the piano lid was closed, the pivot anticlockwise rotation, the volume of two cavities began to change, and damping oil can flow in two cavities through crossing the oil groove under pressure to the pivot forms certain resistance, has provided the function of slowly falling promptly to the piano lid. Because the opening and closing degree of crossing the oil groove is adjustable, so the opening and closing degree of this crossing the oil groove is adjusted to the accessible, adjusts the velocity of flow of damping oil through crossing the oil groove to adjust the slow speed of falling of piano lid, compare with prior art, the regulative mode of this application is more convenient, and the control range is wider, and the suitability is stronger.

In foretell adjustable piano descent control device, the inner wall of adjusting the seat be with pivot matched with cambered surface, the seal groove has been seted up on the cambered surface, the sealing member is including setting up the roll rubber stick in this seal groove, the roll rubber stick with the outer wall of pivot is laminated mutually. After the rolling rubber rod is designed, the sealing structure can form sealing with the rotating shaft, and can not cause great obstruction to the rotation of the rotating shaft.

In the above adjustable piano descent control device, the adjusting seat is provided with a mounting hole communicated with the oil passing groove, the adjusting part comprises an adjusting screw in threaded connection with the mounting hole, the inner end of the adjusting screw is inserted into the oil passing groove, and the outer end of the adjusting screw extends out of the adjusting seat. The adjusting screw is rotated to adjust the length of the inner end of the adjusting screw extending into the oil passing groove, so that the opening and closing degree of the oil passing groove is adjusted, and the adjusting and slow descending effects are achieved.

In the adjustable piano descent control device, the inner wall of the mounting hole is provided with an oil seal matched with the adjusting screw. After the design has the oil seal, the damping oil in the inner cavity is prevented from leaking.

In the above adjustable piano descent control device, the piano descent control device further comprises a door cover in butt joint with the descent control seat, a stop bearing sheet is arranged on the inner side of the door cover, a bearing is fixed on the stop bearing sheet, and one end of the rotating shaft is connected with the bearing.

Compared with the prior art, the utility model has the advantages of it is following:

because the opening and closing degree of crossing the oil groove is adjustable, so the opening and closing degree of this crossing the oil groove is adjusted to the accessible, adjusts the velocity of flow of damping oil through crossing the oil groove to adjust the slow speed of falling of piano lid, compare with prior art, the regulative mode of this application is more convenient, and the control range is wider, and the suitability is stronger.

Drawings

Fig. 1 is a schematic view of the internal structure of the descent control device for a piano.

Fig. 2 is a schematic view of the mounting structure of the rotating shaft in the descent control device of the present piano.

In the figure, 1, a slow descending seat; 2. a chamber; 3. a rotating shaft; 4. a boss; 5. an oil filter tank; 6. filtering the oil with a filter; 7. an adjusting seat; 8. a seal member; 9. an oil passing groove; 10. an adjustment member; 11. rolling the rubber rod; 12. mounting holes; 13. a door cover; 14. a stopping and bearing sheet; 15. and a bearing.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, the piano descent control device comprises a descent control seat 1, an inner cavity for filling damping oil is formed in the descent control seat 1, a rotating shaft 3 for separating the inner cavity into two cavities 2 is rotatably arranged in the inner cavity, a boss 4 is arranged on the outer side of the rotating shaft 3, an oil filtering groove 5 is formed in the boss 4, and an oil filtering handle blade 6 is further sleeved on the boss 4.

As shown in fig. 1 and 2, an adjusting seat 7 matched with the rotating shaft 3 is further arranged in the inner cavity of the slow descending seat 1, the adjusting seat 7 is axially provided with a sealing element 8 which is sealed with the outer wall of the rotating shaft 3, in the embodiment, the inner wall of the adjusting seat 7 is an arc surface matched with the rotating shaft 3, a sealing groove is formed in the arc surface, the sealing element 8 comprises a rolling rubber rod 11 arranged in the sealing groove, and the rolling rubber rod 11 is attached to the outer wall of the rotating shaft 3.

As shown in fig. 1 and 2, the adjusting base 7 is further provided with an oil passing groove 9 capable of communicating the two chambers 2, and the adjusting base 7 is provided with an adjusting piece 10 capable of adjusting the opening and closing degree of the oil passing groove 9. In this embodiment, the adjusting base 7 is provided with a mounting hole 12 communicated with the oil passing groove 9, the adjusting member 10 includes an adjusting screw in threaded connection with the mounting hole 12, an inner end of the adjusting screw is inserted into the oil passing groove 9, and an outer end of the adjusting screw extends out of the adjusting base 7. The inner wall of the mounting hole 12 is provided with an oil seal matched with the adjusting screw.

The working principle of the utility model is as follows: when the piano lid is closed, the rotating shaft 3 rotates anticlockwise, the volumes of the two cavities 2 begin to change, the damping oil can flow in the two cavities 2 through the oil passing grooves 9 under pressure, and certain resistance is formed on the rotating shaft 3, namely, the slow descending function is provided for the piano lid. And the adjusting screw is rotated to adjust the length of the inner end of the adjusting screw extending into the oil passing groove 9, so that the opening and closing degree of the oil passing groove 9 is adjusted, the flow rate of the damping oil passing through the oil passing groove 9 is adjusted, and the effect of adjusting and slowly descending is achieved.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. An adjustable piano descent control device is characterized by comprising a descent control seat (1), an inner cavity for filling damping oil is arranged in the slow descending seat (1), a rotating shaft (3) which divides the inner cavity into two chambers (2) is rotatably arranged in the inner cavity, a boss (4) is arranged on the outer side of the rotating shaft (3), an oil filtering groove (5) is arranged on the boss (4), an oil filtering handle blade (6) is sleeved on the boss (4), an adjusting seat (7) matched with the rotating shaft (3) is arranged in the inner cavity of the slow descending seat (1), the adjusting seat (7) is provided with a sealing element (8) which forms a seal with the outer wall of the rotating shaft (3) along the axial direction, and the adjusting seat (7) is also provided with an oil passing groove (9) which can be communicated with the two chambers (2), the adjusting seat (7) is provided with an adjusting piece (10) capable of adjusting the opening and closing degree of the oil passing groove (9).

2. The descent control device for the adjustable piano of claim 1, wherein the inner wall of the adjusting seat (7) is an arc surface matched with the rotating shaft (3), a sealing groove is formed on the arc surface, the sealing member (8) comprises a rolling rubber rod (11) arranged in the sealing groove, and the rolling rubber rod (11) is attached to the outer wall of the rotating shaft (3).

3. The descent control device for the adjustable piano of claim 1 or 2, wherein the adjusting seat (7) is provided with a mounting hole (12) communicated with the oil passing groove (9), the adjusting member (10) comprises an adjusting screw in threaded connection with the mounting hole (12), the inner end of the adjusting screw is inserted into the oil passing groove (9), and the outer end of the adjusting screw extends out of the adjusting seat (7).

4. The adjustable piano descent control device of claim 3, wherein the inner wall of the mounting hole (12) is provided with an oil seal fitted with the adjusting screw.

5. The adjustable piano descent control device according to claim 1 or 2, further comprising a door cover (13) abutting against the descent control base (1), wherein a stop bearing piece (14) is arranged inside the door cover (13), a bearing (15) is fixed on the stop bearing piece (14), and one end of the rotating shaft (3) is connected with the bearing (15).