CN2339807Y

CN2339807Y - Safety coupling joint capable of reassembling

Info

Publication number: CN2339807Y
Application number: CN 98207304
Authority: CN
Inventors: 周哲文
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-07-21
Filing date: 1998-07-21
Publication date: 1999-09-22
Anticipated expiration: 2008-07-21

Abstract

The utility model relates to a safety coupling joint capable of reassembling, which mainly comprises a combined type structure and an integral body type structure, wherein, the material property of a cut dish and a shaft bolt group embedded in a subassembly is used by the combined type. When a ball link ball body in the subassembly is pulled forcibly, the shaft bolt group in the subassembly can be driven and cut off so as to release the ball link ball body safely. The first and the second end parts of an integral body type capsule-shaped body are respectively provided with cross-shaped grooves which are communicated into the inside of a ball socket. When the ball link ball body arranged in the ball socket is pulled forcibly, the ball link ball body can be braced, and the effect of safely releasing the ball link ball body by the structure and flexibility.

Description

Can type recombined safe coupling head

The utility model is the coupling head of a kind of ball chain, be meant especially can be type recombined safe coupling head.

At present, the coupling head of known ball chain mainly is the metallic coupling head of capsule shape, on its one side a big opening is arranged, another side has a dead slot that extends to the capsule two ends, this dead slot has a little slightly rounded opening at its first end, in the middle of being positioned at dead slot a slightly rounded big opening is arranged, and second little slightly rounded opening arranged at its second end.Width at two sections other continuous dead slots of big slightly rounded opening is enough to hold a pitch width that connects two ball chains just.Can hold two spheroids that connect on two balls in this coupling head.First ball on first ball chain link is inserted in the great circle opening in the middle of the dead slot, ball is pushed into the narrow of dead slot, make first ball rest on an end of Connecting jont.With with quadrat method second ball on second ball chain link being inserted in the Connecting jont, in case this ball chain link has buckled in the narrow channel of dead slot, these ball chain links are just locked in the position till their opposite gimmicks when inserting are split out.

Another kind of coupling head is a kind of box-like coupling head that lid is arranged, and each end at the bottom of box all has recess to hold the spheroid that comes from two ball chains, simultaneously the deriving from box of ball chain after each end of box all has the groove type opening to hold spheroid to put into recess.Lid was just fastened after spheroid was placed into recess, so that ball is stayed in the box entirely, the lock that the link of ball chain is firm rises.

The coupling head butt edge joint link of above-mentioned two kinds of traditional types and Yan Douji is effective; But the two all not tool avoid the Safety function of unexpected injury.

The third coupling head is cylindrical, and cylindrical body respectively has a recess to hold the spheroid on the ball chain link in the side of two ends.Spheroid is entered in the recess, entangle with sleeve outward, with the fixedly connection of ball chain link.Though under general situation, this sleeve is easy to separately, user's chain of still must trapping the puck on the other hand, another hand catches the cover letter just can accomplish.The user must with from cylindrical body rip, just can make these two assemblies separately, if not only need when being snarled, can find this coupling head so a quilt snarls child, also must take this coupling head apart, though this can not be regarded as a kind of safe coupling head with two hands.

The purpose of this utility model provide a kind of be used for connecting ball chain link can type recombined safe coupling head, at least one link that the child that the user of this kind coupling head or quilt snarl does not need the too big strength of flower just can separate the chain of kicking off, so can reduce to possibility injured or that kink minimum.

The purpose of this utility model is achieved in that a plurality of perforation of inserting the body intermediate portion with one group of axle bolt, cuts dish by being embedded at when being subjected to big pulling force in the assembly, cuts off a bolt, and the ball chain is released face and reaches purpose of safety.

The combination accompanying drawing further specifies embodiment below

Fig. 1 is first embodiment of the present utility model.

Fig. 2 is the sectional drawing along Figure 12-2.

Fig. 3 is first embodiment's a perspective view.

Fig. 4 is first embodiment's a plan view.

Fig. 5 is first embodiment's user mode figure.

Fig. 6 is the sectional drawing along Figure 36-6.

Fig. 7 is second embodiment's a exploded view.

Fig. 8 is the sectional drawing along Figure 78-8.

Fig. 9 is second embodiment's use condition attitude figure.

Figure 10 is second embodiment's use condition attitude figure.

Figure 11 is second embodiment's a plan view.

Figure 12 is the sectional drawing along Figure 91 2-12.

Figure 13 is the 3rd embodiment's a schematic representation.

Figure 14 is the 3rd embodiment's a plan view.

Figure 15 is second embodiment's a side view.

Figure 16 is the 4th embodiment's a External view.

Figure 17 is the side view of Figure 16.

Figure 18 is the plan view of Figure 16.

Figure 19 is the 5th embodiment's a schematic representation.

Figure 20 is the plan view of Figure 19.

Figure 21 is the side view of Figure 20.

Coupling head 211 is first embodiments in Fig. 1, comprises one first assembly 213, and first wing surperficial 215 and with wing surperficial 217,218.First assembly has an intermediate portion 219, the position 223 of first arcuate end trails towards first aspect and intermediate portion 219 negative side, and the position 225 of second arcuate end trails in the other direction towards the position 223 of second aspect and the intermediate portion 219 and first arcuate end.The height of intermediate portion 219 is half of first and second

arcuate end position

223 and 225, one rectify between first and second

arcuate end position

223 and 225, connect airtight with it with form first assembly 213 first wing surperficial 215 and support double-vane shape surface 218 at the other end.

Fig. 1 shows that central position 219 has several perforation 227.First and second

arcuate end position

223 and 225 has 229 and inner recess places 233, an inner surface separately, and in common combination and using,

ball chain spheroid

145 and 149 promptly is arranged in this recess.

Fig. 1 shows that second assembly 235 done with respect to the shown position of first assembly 213 rotations of 180 degree except this assembly, and is identical with assembly 213.

Fig. 1 shows that simultaneously cutting dish 237 for one group two editions has several perforation 239, cut the dish group between first and

second assembly

213 and 235 to strengthen and more to impose on the shearing that produces rotation on the ball chain in the active set between first and

second assembly

213 and 235 because of threshold tensile force.

In common combination, these cut dish 237 is in the recess 231 of inserting on the intermediate module 219 of first assembly 213 on double-vane shape surface 218 and second assembly 235.Generally speaking, first assembly 213 and it cut dish 237, the second assemblies 235 and it cut dish 237, be at the beginning position as shown in the figure connect directly to come by one group of bolt head 241, this group bolt head comprises first central frame axle bolt 243 and the bolt cap 245, axle center 247 and end openings position 249; And second central frame axle bolt 253 and bolt cap 255, axle center 257.During when combining so that as the connection of Liu Ding one fixing-assembly, the axle center 257 of the second central frame axle bolt 253 can embed the end openings position 249 of the first central frame axle bolt 243.

Axle bolt group 241 comprises a pair of back shaft 259 that stands in central frame bolt 243,253 both sides simultaneously.First embodiment preferably has first and second assemblies of being made by

polypropylene

213 and 235, cut dish group 237 for two that make by iron and steel, and, so focus on when bearing excessive tension on the ball chain that axle bolt group 241 can be cut into two halves easily when cutting dish group 237 by polypropylene or the metal axle bolt group 241 softer than iron and steel.

Remaining material combination comprises uses the polypropylene manufacturing entirely, and connecting shaft bolt group 241 is also made of polypropylene entirely, and perhaps central frame axle bolt makes of iron and steel but back shaft group 259 is to make with polypropylene or very soft metal.Since polypropylene than iron and steel come soft and elastic, any combinations thereof can both allow can type recombined safe coupling head 211 assembly decontrol the ball chain.First assembly 213 and second assembly 235 can be made with iron and steel, and stud shaft group 241 is made by polypropylene.The pulling force of being executed on a ball chain can cause the central position 219 of strength on first and

second assemblies

213 and 235 to be concentrated.Because back shaft group 259 is made by the material softer than iron and steel, when strength was concentrated, they will be cut dish group 237 and are cut into two halves, allow can type recombined safe coupling head 211 end open, wherein ball chain spheroid is disengaged.

Fig. 2 is the double-

vane shape surface

217 and 218 along Figure 12-2 first embodiment's that cuts second assembly 235.Show among the figure that the first arcuate end part 223 has 229 and inner recess places 233, an inner surface; The second arcuate end part 225 has 229 and inner recess places 233, an inner surface; And central position 219 has several perforation 227.

Fig. 2 further specifies a recess 231 on the double-vane shape surface 218 of intermediate portion 219 on first assembly 213 and second assembly 235, and when member that can type recombined safe coupling head 211 assembled, cutting dish group 237 was to embed in these recess 231.

Fig. 3 is for can type recombined safe coupling head 211 having made up the left side perspective view of finishing.The situation of

first assembly

213 and 235 assembly units of second assembly, just first assembly 213 and second assembly 235 are fixed together to cut type by one group of axle bolt group 241.The 3rd figure shows the side of the bolt cap 245 of the first central frame axle bolt 243 in support pin group 259.First assembly 213 and second assembly 235 are to be fixed together to cut type, so form can type recombined safe coupling head 211 two ends just can catch a

ball chain spheroid

145 and 149 separately.Double-vane shape surface 217 in the 3rd figure on first wing surperficial 215 and second assembly 235 of first assembly 213 is clearly visible.The 3rd figure also further illustrates

first spheroid

145 and 149.

Fig. 4 is first embodiment's that first to three figure can type recombined safe coupling head 211 a plan view, shows the double-vane shape surface 217 on first wing surperficial 215, the second assemblies 235 of first assembly 213 among the figure, and axle bolt group 241.Under average service conditions, cut position and ball chain spheroid position in recess of dish; This figure also further shows depression 233 on the first and second

arcuate end positions

223 and 225 with dotted line, the two be fixed up just formed this creation can type recombined safe coupling head 211 on the position that is used for clamping.Under average service conditions, a ball hammer is known from experience in located one group of recess 233.The 4th figure simultaneously with dotted line draw combination finish can type recombined safe coupling head 211 in two positions of cutting dish group 237.

Fig. 5 is first embodiment's that can type recombined safe coupling head 211 a plan view, and it shows that further end that this can type recombined safe coupling head 211 is in 145,149 o'clock open situations of part of spheroid of accepting (or unclamping) ball chain;

Fig. 6 is cut drawing in side sectional elevation by first embodiment along the 3rd figure center line 6-6.This figure describes bolt head group 241 in detail and comprises first central frame axle bolt 243 and the bolt cap 245, axle center 247 and end openings position 249; The a pair of back shaft 259 that stands in the first central frame axle bolt, 243 both sides; And second central frame axle bolt 253 and bolt cap 255, axle center 257.

Fig. 6 shows that the first arcuate end position 223 of first assembly 213 has an intermediate portion 219 and an inner recess place 233, and shows that the central position 219 of first and

second assemblies

213 and 235 has several perforation 227.This figure shows that the second arcuate end position 225 of second assembly 235 has 29 and inner recess places 233, an inner surface.Though the recess 233 in the diagram on the first arcuate end position 223 and the second arcuate end position 225 be circular, in fact they can be any can be effectively with the terminal ball chain spheroid of grasping that can type recombined safe coupling head 211 and avoid laterally mobile shape.

Among Fig. 7 the 2nd embodiment 313 relatively first embodiment increased thickness, the required pulling force of the honest and clean ball chain of the blinds of general family expenses standard is very little; If but the ball chain be used in one bigger, on heavier blinds is honest and clean, or other need use than on the ball chain of high tensile strength the time, at that time can type recombined safe coupling head in required pulling force will be bigger.

Central position 319 shown in Figure 7 has bores a hole 327 on two.First and second

arcuate end position

323 and 325 has 329 and inner recess places 333, an inner surface separately, and in common combination and using,

ball chain spheroid

145 and 149 promptly is arranged in this recess.

Fig. 7 shows that second assembly 335 done with respect to the shown position of first assembly 313 rotations of 180 degree except this assembly, and is identical with assembly 313.

Fig. 7 shows that simultaneously cutting dish 337 for one group two editions has two perforation 339, cut the dish group between first and

second assembly

313 and 335 to strengthen and more to impose on the shearing that produces rotation on the ball chain in the active set between first and

second assembly

313 and 335 because of threshold tensile force.

Cut dish 337 and be in the recess 331 on the intermediate module 319 of inserting first assembly 313 and second assembly 335.First assembly 313 and it cut dish 337, the second assemblies 335 and it cut dish 337, axle bolt 259.Present embodiment preferably has first and second assemblies of being made by

polypropylene

313 and 335, cut dish group 337 for two that make by iron and steel, and by polypropylene or the metal axle bolt group 359 softer than iron and steel, so when focusing on axle bolt 359 when cutting dish group 337 with excessive tension on the ball chain, can be cut off easily, open at safe coupling head two ends.

Fig. 8 is by being looked two images along Figure 78-8, the double-vane shape surface 317 and 318 of second embodiment's second assembly 335.Diagram shows that the first arcuate end part 323 has 329 and inner recess places 333, an inner surface; The second arcuate end part 225 has 229 and inner recess places 333, an inner surface; And central position 319 has two perforation 327.

Fig. 8 further specifies a recess 331 on the double-vane shape surface 319 of intermediate portion 319 on first assembly 313 and second assembly 335, and when member that can type recombined safe coupling head assembled, cutting dish group 337 was to embed in these recess 331.

Fig. 9 is for making up the embodiment's who finishes left side perspective view.The situation of

first assembly

313 and 335 assembly units of second assembly, just first assembly 313 and second assembly 335 are fixed together by one group of axle bolt group.Two ends just can be caught a

ball chain spheroid

145 and 149 separately.

Figure 10 is second embodiment's a plan view, the double-vane shape surface 317 among the figure on first wing surperficial 315, the second assemblies 335 of demonstration first assembly 313, and axle keyhole 327.Position and the ball chain spheroid of cutting dish under behaviour in service are caving in 333, and the two is fixed up and has just formed the position that is used for clamping.The ball hammer know from experience to be located in one group of recess 333 simultaneously with dotted line two positions of cutting dish group 337 of drawing.

Figure 11 is second embodiment's a plan view, its further show this can type recombined safe coupling head end in 145,149 o'clock open situations of part of spheroid of accepting (or unclamping) ball chain.

Figure 12 is the amplification drawing in side sectional elevation that second embodiment is cut along Fig. 9 center line 6-6.

The first arcuate end position 323 that shows drawing in side sectional elevation first assembly 313 has an intermediate portion 319 and an inner recess place 333, and shows that the central position 319 of first and

second assemblies

313 and 335 has two perforation 327.This figure shows that the second arcuate end position 325 of second assembly 335 has 329 and inner recess places 333, an inner surface.Though the recess 233 in the diagram on the first arcuate end position 323 and the second arcuate end position 225 is circular, in fact they are shapes of the terminal ball chain of a kind of effectively grasping spheroid.

Figure 13 can type recombined safe coupling head the 3rd embodiment's left front view, that is the safe coupling head 411 of this creation has a capsule shape body 413 in each side symmetry, first of capsule shape body 413 is all identical, be divided into four parts by a pair of groove opening 415, first partly all is vertical with groove opening 415 every the neighbour.Groove opening 415 is extended to 2/5ths of capsules body total length from an end of capsule shape body 413, exists together to another end and ends.The width of first groove opening 415 is 1.5 millimeters, is widening about 270% to form figure opening 417 on two positions on the length then.Two figure openings 417 on the groove opening 415 all are two ends symmetrical on capsule shape body 413, directly relatively, about 4.0 millimeters of diameter, size is just held the spheroid of a ball chain.

When the coupling head of utilization polypropylene plastics safety, size is very important.Generally speaking one of spheroid standard size is 4.6 millimeters.When 4.6 millimeters spheroids being inserted in 4.0 millimeters openings of circular opens 417, can cause the slight deformation of coupling head 411 materials.Yet hole 419 is with above-listed specification, and about diameter in space is 4.76 millimeters, and this provides a grasp of pine slightly to spheroid, makes the body of coupling head 411 can have an opportunity to become again its original shape, and lasting pressure relief performance is provided.

Form a hole 419 (see among the figure shown in the dotted line) in the middle of each terminal four figure openings 417 of capsule shape body 413, the spheroid 145 of a ball chain in use is located in wherein.This creation coupling head 411 is the most handy makes as the PP type plastics, not only simple and tool economic benefit during so a large amount of the manufacturing, simultaneously thus can four figure openings 417 of type recombined safe coupling head 411 ends in any one, enter hole 419 then.

The elasticity of plastics can be guaranteed of the present utility model can type recombined safe coupling head 411 can imposing under the situation of ball chain in excessive tension simultaneously, unclamps ball chain spheroid easily, is exactly security property.

Figure 14 is the 3rd embodiment's a worm's eye view, shows that a pair of groove opening 415 is with capsule shape body 413 secondary splitting.This figure is represented by dotted lines the position of hole 419 in figure opening 417.Figure cross section that can type recombined safe coupling head 411 the 3rd embodiment is clearly visible in the 14 figure.

Figure 15 is the 3rd embodiment's a side view, shows capsule shape body 413 and two groove opening 415 at grade; This figure shows that each groove opening 415 all has the circular open 417 of two complete matchings, because the drawing angle of this figure is, these two circular opens are fully overlapping and inseparable.This figure is represented by dotted lines the position of hole 419 in circular open 417 simultaneously.

423 positions among the 15 figure show strength how to adjust and control coupling head 411, and 423 positions are thicker, and the strength of coupling head 411 is just bigger.

The 16 figure is the 4th embodiment's a perspective view, and the display plane edge has the cross section capsule shape body 513 of square; Each edge of the 4th embodiment that can type recombined safe coupling head 511 all is symmetrical.Capsule shape body 513 each end of horizontal edge all are identical, are divided into four parts by a pair of groove opening 515, and first portion all is vertical with groove opening 515 every the neighbour.Groove opening 515 is extended to 2/5ths of capsules body total length from an end of capsule shape body 513, exists together to another end and ends.The width of first groove opening 515 approximately is 1.5 millimeters, is widening about 270% to form two circular opens 517 on two positions on the length then.Two circular opens 517 on the groove opening 515 all are symmetrical two ends on capsule shape body 513, position, directly relatively, 4.0 millimeters of diameter, size is just held the spheroid 145 of a ball chain.Form a hole 519 (see among the figure shown in the dotted line) in the middle of each terminal four circular opens 517 of capsule shape body 513, the spheroid of a ball chain in use is located in wherein.This creation coupling head 511 preferably also is with making as the PP type plastics, and not only simple and tool economic benefit during so a large amount of the manufacturing can type recombined safe coupling head meeting have enough elasticity to discharge the spheroid of ball chain simultaneously thus.

It is identical that the specification of hole 519 and hole 419 are described.Certainly, the absolute size of spheroid 145 and hole 519 can change, but preferably mode and structure guideline be still that hole 519 needs pine slightly hold spheroid 145.Identical with Figure 14 and Figure 15, Figure 17 and Figure 18 are the side view and the worm's eye views of coupling head 511.

Figure 15 and Figure 17 show central position 423 and 523 specific on the 3rd and the 4th embodiment respectively.This two embodiment's central position 423 and 523 can be widened separately can type recombined safe coupling head 411 and the required pulling force of 511 tips to increase.One of reason of so doing is that use on generally need be than the application of high tensile strength ball chain at one can type recombined safe coupling head, can finish desired purpose.Embodiment 411 and 511 can do a bit greatly separately or be littler of to hold the ball chain spheroid of different size.In less size, width is between 1.1 millimeters to 1.4 millimeters in the groove opening 415 and 515, and in bigger size, groove opening 415 and 515 width are between 1.5 millimeters to 1.8 millimeters.Circular open 417 and 517 size also must corresponding increases or minimizing (approximately be corresponding groove opening 415 and 515 width 270%), hold bigger or less ball chain spheroid with example, about 4 millimeters of little person's diameter, about 4.76 millimeters of big person's diameter.Figure 19 for this creation can type recombined safe coupling head the 5th embodiment, roughly the same with regard to global shape with the 4th aforementioned embodiment.Each can type recombined safe coupling head 611 the 5th embodiment's capsule shape body 613 ends all be identical, be divided into four parts by a pair of groove opening 615, first portion all is vertical with groove opening every the neighbour.Groove opening 615 is extended to 2/5ths of capsule shape body 613 total lengths from an end of capsule shape body 613, exists together to capsule shape body 613 another ends and ends.About 1.5 millimeters of the width of first groove opening 615 continues the length of whole groove opening 615.Two ends of capsule shape body 611 respectively have a tip opening 617, the user apply pressure on the ball chain spheroid it was pushed away tip opening 617 fully before, spheroid can rest on this tip opening.Position on capsule shape body 613 each ends is all cut apart by groove opening 615, and inwardly has the surface 619 of radian with an angle slightly.The inside surface 619 of having radian slightly of these four angles forms the supporting parts of a cup-shaped jointly, and before ball chain spheroid was advanced adjacent hole 623 fully, spheroid can rest on this supporting part.The 5th embodiment that can type recombined safe coupling head 611 makes with alkene plastics in poly-, can type recombined safe coupling head meeting have the spheroid that enough elasticity can discharge when ball chain upper pulling force increases thus.

Figure 20 be can type recombined safe coupling head 611 among Figure 19 worm's eye view, show that capsule shape body 613 cut apart by 6156 twice pair half of one group of groove opening.This figure is represented by dotted lines out hole 623 positions of adjacent end opening 617.

Figure 21 is the 5th embodiment's a side view, shows capsule shape body 613 and two groove opening 615 at grade; This figure is represented by dotted lines hole 623 positions of adjacent end opening 617 and the inside surface 619 of angle of capsule shape body 613 tips part.With can type recombined safe coupling head 411 shown in the 15 and 17 figure and 511 the 3rd and the 4th embodiment similar, the thickness of the 5th embodiment's that can type recombined safe coupling head 611 central position 623 can change to adjust ball chain spheroid is discharged required pulling force from hole 623.

One of skill that present embodiment is used is that the adjustment of utilization specification makes an end have big slightly power and pressure than another end, makes coupling head can not come off on the ball chain on both sides, and the small-sized object that stays the next one to be eaten by the child.For example it, if one side being set under ten pounds the pressure of coupling head 221,311,411,511 or 611 unclamped, and another side should be set under ten and half the pressure and unclamp so, Yi Bian can unclamp earlier than another side forever guaranteeing.

Fig. 3,9,13,16 and Figure 19 in, an arrow is all arranged in first coupling head, this arrow is the end that the person that is used for the display operation make progress when using, general hundred speeches of this end preferably have stronger release pressure.When a child exerted pressure to the ball chain, the upper end part of ball chain was stayed in coupling head 211,311,411,511 or 611.Thus, child has no idea to take coupling head and stings, even with it separately and eat.

Another method of reaching different pressures is to change the groove opening 415,515 of coupling head 411,511 or 611 and 615 width.For example it, the last groove width of the direction of arrow can be set at 1.2 millimeters, the lower groove width opposite with the direction of arrow can be set at 1.5 millimeters.The width means less support material of broad just means that also the lower end is weaker a little than the upper end.

In addition, groove opening 415,15 and 615 width can be set littler at tail end, for example 1.5 millimeters or 1.2 millimeters,

coupling head

411 and 511 and the central position of

hole

419 and 519 can be set at 1.76 millimeters.

Claims

One kind can type recombined safe coupling head, it is characterized in that:

A: formed by one first assembly and one second assembly, this first assembly and second assembly have the first wing surface and the second surface that is oppositely arranged and an intermediate portion separately, stretch out the first arcuate end position from this intermediate portion towards a side, and from same intermediate portion towards with aforementioned first arcuate end in the other direction side stretch out the second arcuate end part, in this first assembly and the intermediate portion of second assembly corresponding, be respectively equipped with recess and reach the multiple tracks perforation that vertically runs through this intermediate portion, getting each personal recess that utilizes sets for the dish of cutting that has perforation equally, and this first assembly and second assembly be equipped with cut dish after, get mutually with relatively also group connection of intermediate portion, and utilize central frame axle bolt and support pin group to run through this intermediate portion and two simultaneously and cut the perforation of dish and fix, make first and second arcuate end position of this first assembly and second assembly, each forms one can supply the ccontaining hole of ball chain spheroid, under the situation of pulling force, this hammer can be released.

B: generally be the capsule shape body, comprise one first terminal and one second end, this first and second end has a groove and the circular open that can feed the body interior hole separately, the hole of this first end need be born the spheroid part of the first ball chain link, and the hole of second end need be born the spheroid part of the second ball chain link, and the terminal and second end of this body has the groove that can settle with cross type respectively, each groove position all have one with relative groove portion on the right fully circular open of circular open.