CN1351328A - Tube connector of music instrument basement - Google Patents

Abstract

The pipe joint unit for basic table of music instrument features that a simple structure is used to firmly link large-diameter pipe with small-diameter pipe, preventing noise generation when the music instrument is playing. Its lining sleeve has main body, large-diameter part, through hole for inserting screw bolt in it, nut fixing part and the seat for installing screw bolt. After a screw bolt is inserted into said through hole, it is fastened by nut to compress the circumference of said main body, resulting in its expansion. Said lining sleeve is installed in the small-diameter pipe and the circumference of large-diameter part can buffer the contact with the inner surface of large-diameter pipe.

Description

The pipeline connecting device of music instrument basement

The present invention is about a kind of pipeline connecting device of music instrument basement.

Big cymbals frame 50 for example shown in Figure 5 in order to regulate the big cymbals height, usually with the metallic pipe, is above pipe 54 in this example, middle pipe 53, following pipe 12 is inserted logical small diameter tube respectively in large-diameter pipe, in this example promptly in pipe 53 insert lead under manage 52, on manage 54 and insert and lead in middle pipe 53, flexiblely freely connect.

The connecting portion structure of this base station pipe, expansion sectional view as shown in Figure 6 is to use to connect holding device 60 traditionally, wherein comprises to keep with stationary bushing 61, maintenance tool body 66, with fixed part 70.Keeping with stationary bushing 61 is a kind of cylindrical body that slightly becomes plane C font with the portion of cutting of splitting (not shown), and its interpolation is led to small diameter tube 54 (or 53, as follows) and kept it.Keep a side of tool body 66 that tubular large-diameter pipe fitting portion 67 is arranged, in order to chimeric maintenance large-diameter pipe 53 (or 52, as follows) the end periphery, opposite side has the stationary bushing resettlement section 68 of tubular, in order to accommodate this maintenance stationary bushing 61, insert the logical small diameter tube 54 that remains in this maintenance with stationary bushing 61, perforation remains in this stationary bushing resettlement section 68 again.

Connect in the holding device 60 at this pipe, at first will keep tool body 66 to be embedded in the end periphery of large-diameter pipe 53, use stationary bushing 61 and accommodate the slotting maintenance that is connected with small diameter tube 54 in the stationary bushing resettlement section 68 of this maintenance tool body 66, an end that becomes small diameter tube 54 is inserted in the state of large-diameter pipe 53.From the outside bolt that keep tool body 66 fasten parts 70, and path pipe 54 bolts are tightly kept thereafter.

Yet, connect structure for such pipeline, when fiercely beaing the big cymbals 51 that is arranged on the big cymbals support 50 as shown in the Examples or bronze gong etc. and playing, because vibration, insert the connection side end 54a that leads to the small diameter tube 54 in large-diameter pipe 53, be that center steering moves with this connection holding device 60, and touch mutually with the inboard of large-diameter pipe 53, unnecessary noise (the contact sound of pipe) takes place, and is to see phenomenon repeatly.

So in order to solve such shortcoming, can consider to strengthen large-diameter pipe 53 touches to avoid large-diameter pipe 53 and small diameter tube 54 within it mutually with the diameter difference of small diameter tube 54, but for this base station structure, the selectable caliber of institute is limited, as being benchmark with large-diameter pipe 53, then small diameter tube 54 seems too tiny and ill-looking in appearance, and as being benchmark with small diameter tube 54, then large-diameter pipe 53 diameters are greatly slightly and in appearance also not beautiful.Moreover, base station 50 causes the problem that full weight is excessive, and is also imappropriate, and for outward appearance is considered, large-diameter pipe 53 is poor with the footpath of small diameter tube 54, must lessly be advisable.

In view of this, the object of the present invention is to provide a kind of the connection really to keep small diameter tube and large-diameter pipe with simple structure, unlikely shaking between the big small diameter tube, and can connect structure by the pipeline that the music instrument basement that highly prevents effect is arranged of noise when playing.

Above-mentioned purpose of the present invention is realized by following technical scheme.

A kind of pipeline connecting device of music instrument basement, be to be provided with in the junction of large-diameter pipe and small diameter tube to be connected to be held in flexible connection holding device of freely construct, this connections holding device be by maintenance with stationary bushing, maintenance tool body, reach fixed part and constituted.It is characterized in that: connect side end installing lining and insert at small diameter tube and lead in the inner core of large-diameter pipe; This lining be by compression deformation freely elastic body form, have and to be inserted in the body of outer peripheral face that this small diameter tube is connected the inner core face of portion, with contact at end difference that this small diameter tube is connected the ora terminalis of side end and can be inserted in the large-diameter pipe of the outer peripheral face in this large-diameter pipe inner core for Jie has, and the set bolt bolt insertion hole of this body of perforation and large-diameter portion, body side end at this bolt insertion hole has the fixed by nut portion that hold-doun nut is used simultaneously, and has a bolt installing seat portion that set bolt is used in the large-diameter portion side end face of bolt insertion hole, bolt was tightly in hold-doun nut after this set bolt ran through this bolt insertion hole, and the compression of the outer peripheral face of this bush body portion swells and installs the inner core of this lining in small diameter tube, and this large-diameter portion outer peripheral face contacts with the large-diameter pipe inner core is gentle simultaneously.

The invention has the advantages that: pipeline firmly can be connected and unlikely rocking the noise when preventing to play.

Below in conjunction with drawings and Examples the present invention is described in further detail.

Description of drawings:

Fig. 1 is the fragmentary cross-sectional view of the main portion of expression music instrument basement in one embodiment of the invention.

Fig. 2 is the decomposition side view of pipeline connecting portion structure of the present invention.

Fig. 3 is the expansion sectional view of the main portion of the present invention.

Fig. 4 is similarly the expansion sectional view of the main portion of the present invention.

Fig. 5 is the synoptic diagram of general used big cymbals support (base station).

Fig. 6 is the fragmentary cross-sectional view of the main portion of expression conventional tube holding device.

As shown in Figure 1, the pipeline connecting device of music instrument basement of the present invention, be in connection side end 16 installing linings slotting the leading in the inner core 12 of large-diameter pipe 11 of 20 backs of the small diameter tube 15 of music instrument basement 10, and connect the state that freely stretches that is held in to connect holding device 60.Again, the music instrument basement 10 of present embodiment is that illustrated big cymbals base station 50 as shown in Figure 5 is example in the employing background technology.

In this, just connect holding device 60 and illustrate, be to be a kind of known device as shown in Figure 5, be by keeping with stationary bushing 61, keep tool body 66, reaching fixed part 70 and constituted.Have prosign among Fig. 1 with among Fig. 5, expression belongs to same parts, its detailed description of Therefore, omited.

From Fig. 2, can fully understand, lining 20 be by compression deformation freely elastic body such as rubber or synthetic resin formed, its have body 21, large-diameter portion 25, with bolt insertion hole 30, that is the body 21 of lining 20 has the outer peripheral face 22 in the inner core 17 (with reference to Fig. 3,4) of the connection side end 16 that can be inserted in small diameter tube 15.Situation as described later, this outer peripheral face 22 can swell the inner core 17 that is pressed on small diameter tube 15 because of compression, so that its difference heals is better little.

Again, the large-diameter portion 25 of lining 20 is to be that Jie forms with the end difference 24 of conflicting with the ora terminalis that is connected side end 16 18 of small diameter tube 15, and has the outer peripheral face 26 in the inner core 12 that can be inserted in large-diameter pipe 11.

And bolt insertion hole 30 is to connect this body 21 to form with large-diameter portion 25.

Body side end 31 at this bolt insertion hole 30 of lining 20 has the fixed by nut portion (being generally hexagon ring portion) 35 of hold-doun nut 41 usefulness, and the bolt installing seat portion 37 of set bolt 40 usefulness is arranged in the large-diameter portion side end face 32 of bolt insertion hole 31.Set bolt 40 is that the bolt installing seat portion 37 by lining 20 inserts and leads to that to screw togather the nut 41 back bolts that are fixed in fixed by nut portion 35 behind bolt insertion hole 30 tight, thereby compression lining 20 is in its inserting hole 30 directions.

The structure that forms like this, at first inserting the maintenance of siphunculus road connection holding device 60 uses stationary bushing 61 (not shown) behind the desired location of small diameter tube 15, as shown in Figure 3, connect set bolt 40 body 21 of stationary bushing 20 gently in advance, make the degree of this bolt 40 and nut 41 unlikely mutual disengagings, then the body 21 of lining 20 is inserted and led in the inner core 17 of the connection side end 16 of small diameter tube 15, make end difference 24 contact at the ora terminalis that connects side end 16.

Secondly insert with lining 20 and lead in the state of the connection side end 16 of this small diameter tube 15, bolt fastens bolt 40 and nut 41, be to understand with reference to Fig. 4, the outer peripheral face 22 of bush body portion 21 is compressed and is out of shape, the external diameter of lining 20 (outer peripheral face 22) swells with arrow A direction in scheming, by being closely to be fixed in the small diameter tube 15.

And as mentioned before, to keep with stationary bushing 61 and the small diameter tube 15 of lining 20 is housed, be inserted in and belong in the inner core 12 of large-diameter pipe 11 of maintenance tool body 66 that pipeline connects holding device 60, and make the maintenance that is connected with small diameter tube 15 is contained in the stationary bushing resettlement section 68 of maintenance tool body 66 with 61 one-tenth of stationary bushings the state of inserting in its end periphery embedding.

This moment or have lining 20 to be hampered by the phenomenon that pipeline connects holding device 60 a little, but as long as be forced into a little.Afterwards fixed part 70 is fastened from keeping tool body 66 outside bolts, promptly small diameter tube 15 can tightly be kept by bolt, and finishes the connection of large-diameter pipe 11 and small diameter tube 15.

Use this one to connect when the structure, even small diameter tube 15 move left and right large-diameter pipe 11 in playing is that large-diameter portion 25 contact in advance in large-diameter pipe 11 of big lining 20 relaxes because of diameter than small diameter tube 15 is arranged, so the metallic noise of unlikely generation obstruction performance.

Again, when regulating the height of big cymbals base station 10, draw high small diameter tube 15 to its to greatest extent connect holding device 60 because lining 20 can touch in pipeline, be the accident that breaks away from unlikely generation.Again, in order to carry or to safeguard and when decomposing musical instrument base station 10, firmly drawing can break away from a little.

Based on above explanation, pipeline connecting device according to music instrument basement of the present invention, since the set bolt of lining that will be installed in small diameter tube through the in-and-out bolt inserting hole and bolt tightly in hold-doun nut, thereby the outer peripheral face compression of bush body portion is swelled, cause and can install this lining in the small diameter tube inner core, simultaneously with the outer peripheral face of large-diameter portion relax with the large-diameter pipe inner core between contact, so to constitute, pipeline firmly can be connected and unlikely rocking the noise when preventing to play.

Claims (1)

1, a kind of pipeline connecting device of music instrument basement, be to be provided with in the junction of large-diameter pipe (11) and small diameter tube (15) to be connected to be held in flexible connection holding device (60) of freely constructing, this connection holding device (60) be by keep with stationary bushing (61), keep tool body (66), and fixed part (70) is constituted, it is characterized in that: connect at small diameter tube (15) that side end installing lining (20) is also slotting to be led in the inner core of large-diameter pipe (11); This lining be by compression deformation freely elastic body form, have and to be inserted in the body (21) of outer peripheral face (22) that this small diameter tube is connected the inner core face of portion, with contact at end difference (24) that this small diameter tube is connected the ora terminalis of side end and can be inserted in the large-diameter pipe (25) of the outer peripheral face (26) in this large-diameter pipe inner core for Jie has, and the set bolt (40) of this body of perforation and large-diameter portion bolt insertion hole (30), simultaneously in fixed by nut portion (35) that the body side end (31) of this bolt insertion hole has hold-doun nut (41) usefulness, and has the bolt installing seat portion (37) that set bolt is used in the large-diameter portion side end face (32) of bolt insertion hole, bolt was tightly in hold-doun nut after this set bolt ran through this bolt insertion hole, and the compression of the outer peripheral face of this bush body portion swells and installs the inner core of this lining in small diameter tube, and this large-diameter portion outer peripheral face contacts with the large-diameter pipe inner core is gentle simultaneously.

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