CN2257335Y

CN2257335Y - Locking joint for musical instrument

Info

Publication number: CN2257335Y
Application number: CN 96210895
Authority: CN
Inventors: 谢武弘
Original assignee: KHS Musical Instrument Co ltd
Current assignee: KHS Musical Instrument Co ltd
Priority date: 1996-05-07
Filing date: 1996-05-07
Publication date: 1997-07-02
Anticipated expiration: 2006-05-07

Abstract

The utility model relates to a locking joint for a musical instrument. The joint is mainly made of the milder metal; a lug is arranged at one end of the joint; the lug is provided with a fixing hole which penetrates through a central hole. A containing groove staggered with the fixing hole is arranged in the lug; a screw cap is placed into the containing groove for fixation; a fixing bolt can be matched with the screw cap to penetrate through the fixing hole. The utility model is fixed by a locker to provide a very stable assembling combination for the musical instrument connecting rod.

Description

The musical instrument Locking joint

The utility model relates to a kind of musical instrument Locking joint.

The scope of musical instrument Locking joint utilization is quite extensive, and according to the design of different vendor, also slightly variant on structural arrangements, with early stage design view it, it promptly as shown in Figure 4, this joint 70 mainly is to be a hollow tubular structure, in the central for wearing the central hole 71 of connecting rod, and one fixing threaded hole that penetrates in the central hole 71 radially is set at side, and can screw in wherein by a fixing bolt 72, to provide a connecting rod part fixing effect, this design middle joint mainly is to make with steel pipe, and its material hardness is higher, comparatively difficult on surface Machining such as processing of the screw thread of fixing threaded hole and anti-skidding lines, simultaneously the outer end of its fixing bolt 72 is close to and is against joint 70 sides, also comparatively has some setbacks on user's rotary manipulation, and it should belong to more incomplete design.For overcoming the defective of the early stage joint 70 shown in the earlier figures 4, be to have the artificer that this structure is improved, and as shown in Figure 5, have additional a projection 91 at these joint 90 1 ends, and the fixing threaded hole that will assemble fixing bolt 92 is arranged on the side of this projection 91, so can draw back the distance of 90 of fixing bolt 92 and joints, and can increase the convenience in when operation, simultaneously because this projection 91 generally is to adopt softer metal material (such as zinc alloy, copper ...) make, thereby can produce multiple different moulding, also can mark trade mark or pattern thereon, and make integral body more attractive in appearance, so as to promoting the whole market competitiveness, and the processing of its fixing threaded hole also easily makes things convenient for, so be subjected to liking of production firm and Consumer deeply.

Just the product shown in Fig. 5 in actual use, but find an important disadvantages very, because its projection 91 is to be made by softer metal material, when load is heavier, screw thread in its fixing threaded hole very easily damages, thereby have influence on working life, when especially assembling the heavier musical instrument of some weight, the user is afraid of to fail firm being fixed again, thereby desperately with fixing bolt 92 packing in fixing threaded hole, it makes the damage that must cause screw thread, and causes the damage of integral joint 90, the probability of its damage is about more than the several times of structure shown in Fig. 4, and this obviously is the vital wound of structure shown in Fig. 5.

Main purpose of the present utility model is: a kind of musical instrument Locking joint is provided, and using provides the musical instrument connecting rod very firm being assembled.

For achieving the above object, the utility model is to provide a kind of musical instrument Locking joint, and it is to establish a projection in an end of joint, is provided with the central hole that axially runs through on joint and projection, wherein,

On this projection, be provided with a fixed hole that penetrates central hole, in this projection, be provided with in addition one with the staggered containing groove of fixed hole, and in this containing groove, be assembled with a nut, and form an edge clipping in the opening side of this containing groove,

Whereby, nut firmly can be fixed in the containing groove and be located, and can cooperate fixing bolt can penetrate the fixed hole of nub side and match, to reach sealed fixing effect with nut.

The utility model compared with the prior art advantage and good effect is very tangible.By above technological scheme as can be known, the utility model mainly is to be provided with the fixed hole that penetrates in the joint central hole in nub side, and in projection, be provided with and the staggered containing groove of this fixed hole, so a nut can be arranged at and cooperate the fixing bolt assembling fixing in the containing groove, because projection of the present utility model is to be made by softer metal, so it is all quite convenient in the processing of fixed hole and containing groove, it matches with fixing bolt by nut, and need not machining screw in the fixed hole of projection, promptly more convenient in processing, again owing to this nut is made by hard metal, so its screw thread is more not fragile, can guarantee working life of the present utility model, nut has belonged to standardized element simultaneously, its cost is quite cheap under mass-produced condition, so will not have influence on the cost of production of joint integral body, with design of the present utility model, it singly can not draw back distance between joint and fixing bolt by the projection of making than the soft metal, the user is provided operating characteristics easily, and excellent appearance and modeling, also can prolong the working life of integral body simultaneously, and can have the chief of two kinds of existing joints concurrently by the setting of nut.

Further specify specific structural features of the present utility model and purpose below in conjunction with accompanying drawing.

Brief Description Of Drawings:

Fig. 1 is an element decomposing schematic representation of the present utility model.

Fig. 2 is a containing groove of the present utility model position sectional structure schematic representation.

Fig. 3 is the vertical sectional structure schematic representation of joint of the present utility model.

Fig. 4 is early stage existing joint schematic appearance.

Fig. 5 is another kind of existing joint schematic appearance.

See also shown in Figure 1, it is to be element decomposing schematic representation of the present utility model, it is identical wherein can to see the existing joint moulding shown in the moulding of the utility model overall appearance and Fig. 5, central authorities at this joint 10 are provided with central hole 11, and at one end be provided with projection 20 to make than the soft metal, and be provided with a fixed hole 21 that penetrates in joint 10 central holes 11 in projection 20 sides, in this projection 20, be provided with the containing groove 22 of a cross-section fixed hole 21 again, and a nut 30 can be placed in wherein, so can match with fixing bolt 31, so as to the effect of a fixing assembling is provided by this nut 30.

Cooperation is referring to the utility model containing groove 22 position sectional structure schematic representation of Fig. 2, can see the containing groove of offering in projection 20 sides of joint 10 22, a nut 30 can be placed in wherein simultaneously, and the opening side by this containing groove 22 is made the evagination machining deformation with the wall of its side, to form an edge clipping 23 at nut 30 outer ledge places, can with nut 30 firm be fixed on location in the containing groove 22, and can cooperate assembling for fixing bolt 31.

Cooperate the utility model joint 10 vertical sectional structure schematic representation again referring to Fig. 3, the assembling sheath 12 of can arranging in pairs or groups in joint of the present utility model 10 outsides, fixed plate 13 accessories such as grade, so that the user is used easily, projection 20 sides at joint 10 are provided with the fixed hole 21 that penetrates in joint 10 central holes 11, on projection 20, be provided with simultaneously the containing groove 22 that interlocks with fixed hole 21, when adding when man-hour nut 30 being inserted in projection 20 containing grooves 22, just can make its screw and fixed hole 21 align, and can be convenient to the screw-in of fixing bolt 31, to reach the fixing effect of assembling.By above explanation as can be known, the utility model mainly is to be provided with the fixed hole 21 that penetrates in joint 10 central holes 11 in projection 20 sides, and in projection 20, be provided with and this fixed hole 21 staggered containing grooves 22, so a nut 30 can be arranged at and cooperate fixing bolt 31 assemblings fixing in the containing groove 22, because projection 20 of the present utility model is to be made by softer metal, so it is all quite convenient in the processing of fixed hole 21 and containing groove 22, it matches with fixing bolt 31 by nut 30, so need not machining screw in the fixed hole 21 of projection 20, more convenient in processing, again owing to this nut 30 is made by hard metal, so its screw thread is more not fragile, and can guarantee working life of the present utility model, nut 30 has belonged to standardized element simultaneously, its cost is quite cheap under mass-produced condition, so will not have influence on the cost of production of joint 10 integral body.

Claims

1. musical instrument Locking joint, it is to establish a projection in an end of joint, on joint and projection, be provided with the central hole that axially runs through, it is characterized in that: on this projection, be provided with a fixed hole that penetrates central hole, in this projection, be provided with in addition one with the staggered containing groove of fixed hole, and in this containing groove, be assembled with a nut, and form an edge clipping in the opening side of this containing groove, fixed by nut is in containing groove, and fixing bolt penetrates the fixed hole of nub side and is screwed with nut.