CN215730810U - Back rail wood supporting structure and piano with same - Google Patents

Abstract

The utility model discloses a back rail wood supporting structure and a piano with the same, wherein the back rail wood supporting structure comprises a metal back rail and a wood supporting plate arranged on the metal back rail, the metal back rail comprises a plate body, a first extending part extending forwards from the upper end of the plate body and a second extending part extending forwards from the lower end of the plate body, a groove for limiting the wood supporting plate is formed by the plate body, the first extending part and the second extending part in a surrounding mode, the front side of the plate body is adhered to the rear side of the wood supporting plate, and a first screw for locking the wood supporting plate is arranged on the plate body. The back rail wood supporting structure is formed by splicing a metal back rail and a supporting wood and is fixed by glue and a screw. The bending strength of the back rail wood supporting structure is increased through the metal back rail, the structure is prevented from being bent and deformed, the back rail wood supporting structure can be tightly attached to the aluminum back rail in a static state, gaps generated due to deformation are eliminated, reworking is reduced, the machining precision is improved, and the quality of a piano is guaranteed. In addition, the structure has simple assembly mode and low cost.

Description

Back rail wood supporting structure and piano with same

Technical Field

The utility model relates to the technical field of pianos, in particular to a back rail wood supporting structure and a piano with the same.

Background

The action is the core playing mechanism of each piano to produce action. The player gives the piano different melodies by playing the keyboard connected to the action. A piano with high quality must be provided with a highly accurate action. A high-quality action machine requires high precision and high weather resistance of parts in addition to design requirements. The back bumper is an important part of the whole string striking machine, the existing back bumper support wood is made of pure wood, the aluminum back bumper is made of aluminum alloy material, three grooves are milled on the back bumper support wood through a milling cutter, the back bumper support wood and the aluminum back bumper are connected through screws by adopting three back bumper shaft bracket connecting rods, and the back bumper support wood and the aluminum back bumper can perform mutual circular motion around a shaft nail on a shaft bracket. However, since the natural wood material has non-uniform density, it is easily deformed by the change of the temperature and humidity of the environment, and the back rail support wood is not attached to the aluminum back rail in a static state, so that gaps of different degrees are generated, and the screws on the back rail shaft bracket need to be adjusted repeatedly to reduce the gaps, which increases the difficulty of producing the string striking machine, and the precision of the components is not easy to control.

Therefore, there is a need for an improved back rail back timber structure.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provides a back rail wood supporting structure.

A second object of the present invention is to provide a piano.

In order to achieve the above purpose, the utility model provides the following technical scheme:

the utility model provides a back of body shelves holds in palm wooden structure, includes the metal back of the body shelves and installs the support wood on the metal back of the body shelves, the metal back of the body shelves include a plate body, certainly first extension that the plate body upper end extends forward and certainly the second extension that the plate body lower extreme extends forward, the plate body first extension and second extension enclose establish the recess that forms spacing support wood, the rear side of holding in the palm wood is pasted the front of plate body, be equipped with the first screw that is used for locking support wood on the plate body.

As a preferred scheme, the front surface of the plate body is provided with a glue hiding groove.

As a preferable scheme, the back surface of the plate body is provided with a glue hiding groove.

As a preferred scheme, the metal back stop is made of aluminum alloy materials.

Preferably, the second extension part is provided with a second screw for locking the support wood

As a preferable scheme, the front side of the support wood is provided with three mounting grooves for mounting a connecting rod shaft bracket.

Preferably, a notch is formed in the rear side of the top of the plate body.

Preferably, the first screw is a countersunk head wood screw.

In order to achieve the second purpose, the utility model provides the following technical scheme:

a piano comprises a string striking machine, wherein the string striking machine is provided with a back rail wood supporting structure.

Compared with the prior art, the utility model has the following beneficial effects:

the back rail wood support structure provided by the utility model is formed by splicing a metal back rail and a wood support and is fixed by glue and screws. The bending strength of the back rail wood supporting structure is increased through the metal back rail, the structure is prevented from being bent and deformed, the back rail wood supporting structure can be tightly attached to the aluminum back rail in a static state, gaps generated due to deformation are eliminated, reworking is reduced, the machining precision is improved, and the quality of a piano is guaranteed. In addition, the structure has simple assembly mode and low cost.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a front view of a back stop back timber structure according to the present invention;

FIG. 2 is a cross-sectional view of FIG. 1 taken along A-A;

FIG. 3 is a cross-sectional view taken along B-B of FIG. 1;

FIG. 4 is a front view of the metal back rail of the present invention;

FIG. 5 is a side view of FIG. 4 taken along C-C;

in the figure:

1. a metal back rail; 11. a plate body; 111. a notch; 12. a first extension portion; 13. a second extension portion; 14. a glue hiding groove; 15. screw holes; 2. carrying out wood supporting; 21. mounting grooves; 3. a first screw; 4. a second screw.

Detailed Description

For a better understanding of the objects, structure, features, and functions of the utility model, reference should be made to the drawings and detailed description that follow. It should be noted that the features illustrated in the drawings are not necessarily drawn to scale. Moreover, the described embodiments are a few embodiments of the utility model, rather than all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the utility model without any inventive step, are within the scope of protection of the utility model.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", "front", "rear", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Examples

Referring to fig. 1-3, the present embodiment provides a back rail wood-holding structure, which includes a metal back rail 1 and a wood-holding member 2 mounted on the metal back rail 1.

As shown in fig. 4-5, the metal back rail 1 is a horizontally extending strip, and includes a plate body 11, a first extending portion 12 extending from the upper end of the plate body 11 vertically forward, and a second extending portion 13 extending from the lower end of the plate body 11 vertically forward, the front end of the first extending portion 12 is provided with an inclined surface to adapt to the shape of the joist 2, the length of the second extending portion 13 is greater than that of the first extending portion 12, and the plate body 11, the first extending portion 12, and the second extending portion 13 enclose a groove forming the limiting joist 2. The two extending parts are arranged, so that the bending resistance of the metal back rail 1 can be enhanced, and the stability of combination of the metal back rail 1 and the support wood 2 is improved. The plate body 11 and the second extension part 13 are both provided with screw holes 15 for installing screws for locking the back timber 2. In addition, a notch 111 is formed at the rear side of the top of the plate body 11 for attaching a green felt. In this embodiment, the metal back rail 1 is an aluminum alloy structure, and has the advantage of wear resistance and light weight, and of course, other types of metal materials may be used in other embodiments.

As shown in fig. 5, the front and back surfaces of the plate body 11 are provided with glue storing grooves 14 for storing glue, so as to prevent the glue from flowing away during the pasting process and affecting the pasting quality. Two rows of glue hiding grooves 14 are arranged on the front surface of the plate body 11 at intervals up and down, and each row of glue hiding grooves 14 is provided with a plurality of notches which are arranged in a matrix.

As shown in fig. 1-3, the front side of the back timber 2 is provided with three mounting grooves 21 arranged at intervals in the transverse direction for mounting the connecting rod shaft bracket. The back timber 2 and the plate body 11 are combined by glue and screws. Specifically, the back side of the back timber 2 is adhered to the front side of the plate body 11. The plate body 11 is provided with a first screw 3 for locking the support wood 2, and the first screw 3 drills into the support wood 2 from the rear side to the front side. In this embodiment, the first screw 3 is a countersunk head wood screw. The second extending part 13 is provided with a second screw 4 used for locking the support wood 2, the second screw 4 is staggered with the first screw 3 on the left upper part and the right upper part, and the support wood 2 is drilled upwards from the bottom, so that the support wood 2 is further fixed, and the support wood 2 is prevented from loosening. The bending strength of the back of the body shelves wood-supporting structure is increased through the metal back shelves 1, the metal structure can not be influenced by weather conditions, the back of the body shelves wood-supporting structure can be prevented from being bent and deformed by the aid of the metal back shelves 1, the back of the body shelves wood-supporting structure and the contact surface of the aluminum back support are kept horizontal, the back of the body shelves wood-supporting structure and the aluminum back support can be tightly attached to each other in a static state, gaps generated by deformation are eliminated, rework is reduced, machining precision is improved, and piano tone quality is guaranteed.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. The utility model provides a back of body shelves holds in palm wooden structure, its characterized in that includes the metal back of the body shelves and installs the support wood on the metal back of the body shelves, the metal back of the body shelves include a plate body, certainly the first extension that the plate body upper end extends forward with certainly the second extension that the plate body lower extreme extends forward, the plate body first extension and second extension enclose establishes the recess that forms spacing support wood, paste the rear side of support wood the front of plate body, be equipped with the first screw that is used for locking support wood on the plate body.

2. The back board joist structure as claimed in claim 1, wherein the front surface of the board body is provided with glue hiding grooves.

3. The back board joist structure as claimed in claim 2, wherein the back surface of the board body is provided with a glue-hiding groove.

4. The back stop back timber structure according to claim 1, wherein the metal back stop is an aluminum alloy material.

5. The back stop joist structure as claimed in claim 1, wherein the second extension is provided with a second screw for locking the joist.

6. The back stop log bracket structure of claim 1, wherein the front side of the log bracket is provided with three mounting grooves for mounting a connecting rod shaft bracket.

7. The back stop log frame as claimed in claim 1, wherein a notch is formed at a rear side of the top of the plate body.

8. The back stop lumber support structure of claim 1, wherein the first screw is a countersunk head wood screw.

9. A piano comprising a action, characterized in that the action is fitted with a back rest structure according to any of claims 1-8.

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