CN2422856Y - Locking control device for multi-section bar of cargo container - Google Patents

Abstract

The utility model discloses a locking control device for a multi-section pull bar of a cargo container. An unlocking pin of a first locking device of the utility model is arranged on the bottom part of a first locking casing, and is directly extended into an unlocking hole of a second locking device so that the locking pin of the second locking device is shrunk and unlocked. Simultaneously, the unlocking pin of the second locking device is directly extended into the unlocking hole of a third locking device so that the locking pin of the third locking device is shrunk and unlocked. Thus, the rest can be deduced by analogy, and the unlocking pin of one higher layer of locking device can be extended into the unlocking hole of one lower layer of locking device so that one lower layer of locking device can be unlocked. When a handle of the pull bar is shrunk, the handle is in complete butted joint with a bottom surface of a seat body so that the lengthening quality and the shortening quality of the pull bar achieve an optimal condition.

Description

The lock control devices of luggage case multistage pull bar

The utility model relates to the trunk draw bar lock control devices, particularly a kind of lock control devices of luggage case multistage pull bar.

The pull rod device of luggage case is all used two kinds of functions of stretching and contraction of lock control unit controls pull bar, make the pull bar of luggage case can be stretched to peak, for luggage case towing walking, time spent not, pull bar can be contracted to shortest length, so that the carrying of the collection and the vehicles in travelling, therefore trunk draw bar possesses telescopic structure, be the trend in current market, yet, the form of the retracted configuration of trunk draw bar, be ever-changing, wherein, in the majority with the flexible lock control form of two sections pull bars, for example No. the 5581846th, United States Patent (USP) is disclosed; Two sections telescopic levers are made stepless lock control person then occupy minority, for example No. the 5628088th, United States Patent (USP) is disclosed; When though this stepless telescopic lever can solve luggage case towing walking, the problem of telescopic lever length variations, but because the size of luggage case and height and on-fixed, often because user's sex, age, the equal demand of stature height, the pull bar collapsing length of luggage case also needs to change thereupon, the demand that can meet marketing guiding, so the luggage case telescopic lever in fact can't cooperate the demand of multiple user's height only by two sections or two sections made do not have the flexible pull bar of section; For this reason, No. the 362404th, Taiwan patent announcement " multi-section type Travelling trunk pulling handle brake apparatus "; " multi-section type Travelling trunk pulling handle brake apparatus patent cases such as (two) is disclosed; be the demand that adapts to market and release; though its conception is good; be that above-mentioned patent structure is not only complicated; still need and use an extra middle seat 19 and the following locating piece 63 and the associated components thereof of secondary control assembly 60; and during assembly fee to announce No. 368815, utilize the inclined-plane guide groove to control the horizontal component that Breech block (pin) must generate an inclined-plane again, except that causing the shortcoming that to connect airtight between pull bar handle and pedestal, also because the vertical inclined-plane of the multistage guide groove of the trunk draw bar device of multistage lock control devices, the stretchable length and the ratio of the multiple between collapsible length of pull bar are significantly glided, cause the stretchable effective length of pull bar to be restricted.

Main purpose of the present utility model is to improve the above-mentioned shortcoming of commonly using on the luggage case multistage pull bar lock control device construction, and provide a kind of structure that can simplify the lock control devices of luggage case multistage pull bar, but the tensile elongation of pull bar significantly improves with contractile length ratio, and the telescopic length of pull bar is brought into play to greatest limit.

Another purpose of the present utility model is to provide a kind of lock control devices of luggage case multistage pull bar, the latch of its first blocking device is located at the first locking housing bottom and can be directly stretched into the unlock hole of second blocking device and make the lockweight retraction of second blocking device and release, the latch of second blocking device also can directly stretch into the unlock hole of the 3rd blocking device simultaneously, and make the lockweight retraction of the 3rd blocking device and release, so can the rest may be inferred, the lockweight of higher one deck blocking device can stretch into the unlock hole of time one deck blocking device, and make the release of this time one deck blocking device, because the latch of last layer blocking device is directly to insert the unlock hole inwall of time following one deck blocking device and both to interlock with plane and plane and hold, the button of the per two interlayers relation of holding does not have the horizontal component on inclined-plane to take place simultaneously, so all be closely as one between per two blocking devices, simultaneously very close to each other fully therebetween, when so the pull bar handle shrinks, can be fully and the bottom surface of pedestal flush, the quality of the lock control devices of luggage case multistage pull bar is promoted for it.

For reaching above-mentioned order ground and effect, the technological means that the utility model adopted comprises:

Solid first blocking device of one pin in interior pipe lower end;

One is located at this internally pipe periphery middle pipe that can slide for interior pipe within it, and pipe one side is provided with on one button hole and button hole once in this;

Solid second blocking device of in this, managing the lower end of one pin;

One be located in this pipe periphery can supply in the outer tube that slides within it of pipe, a side of this outer tube is provided with on one button hole and button hole once;

Solid the 3rd blocking device of one pin in this outer tube lower end;

One is located at the big outer tube that this outer tube periphery can slide for outer tube within it, and a side of this big outer tube is provided with on one button hole and button hole once;

One is located at the pull line between the handle button and first blocking device;

This flexible traction rope elongation arrangment is in order to controlling the keying of this first blocking device, and the latch of this first blocking device bottom is one can stretch into the unlock hole of second blocking device top, to control second blocking device to button hole release down; And the latch of second blocking device bottom is one can stretch into the unlock hole of the 3rd blocking device top, to control the 3rd blocking device to button hole release down, make second and third blocking device successively detain respectively so that pull bar can up spur and terminate in its relevant last button hole, and make pull bar can be stretched to peak.

In brief, the utility model reaches effect in order to achieve the above object, the technological means that is adopted mainly comprises: one can be for the blocking device of multistage pull bar lock control use, this blocking device is characterised in that the body of this device has a latch of a vertical unlock hole and a horizontal obturator hernia and body bottom; Its another feature can be communicated with each other for this vertical unlock hole and horizontal obturator hernia, and be provided with in this horizontal obturator hernia can the locking of electing property of the right and left the Breech block device, thereby make this Breech block can be when pull bar is pulled up to peak, button terminates in the last button hole of its relevant pull bar, and when pull bar is contracted to minimum point, can detain the following button hole that terminates in its relevant pull bar, thereby make lock control devices of the present utility model can be specially adapted to the lock control devices of multistage pull bar.

Describe above-mentioned and other purpose, effect and characteristics of the present utility model in detail below in conjunction with drawings and Examples.

Brief description of drawingsfig:

Fig. 1 is the three-dimensional exploded view of lock control devices first preferred embodiment of the utility model luggage case multistage pull bar;

Fig. 2 is the local three-dimensional exploded view that amplifies of the assembly of first to the 3rd blocking device among Fig. 1;

Fig. 3 is local another three-dimensional exploded view that amplifies of the assembly of first to the 3rd blocking device among Fig. 1;

Fig. 4 A and Fig. 4 B are respectively the two sides section action specification schematic diagram () of the utility model first to the 3rd blocking device, show that pull bar is contracted to minimum point;

Fig. 5 A and Fig. 5 B are another action specification schematic diagram (two) of the utility model first to the 3rd blocking device, and it is voltage-controlled to show that second blocking device breaks away from first blocking device institute, and its pull bar is carrying out up extended state;

Fig. 6 A and Fig. 6 B are respectively the two sides section action specification schematic diagram () of the utility model first to the 3rd blocking device, show that pull bar is pulled to peak;

Fig. 7 is the three-dimensional exploded view of second preferred embodiment of the lock control devices of the utility model luggage case multistage pull bar;

Fig. 8 is the three-dimensional exploded view of the 3rd preferred embodiment of the lock control devices of the utility model luggage case multistage pull bar;

Fig. 9 is Fig. 8 combination stereogram;

Figure 10 is the vertical profile diagrammatic sketch of first blocking device of Fig. 7;

Figure 11 is the vertical profile diagrammatic sketch of second blocking device of Fig. 8.

The major part conventional letter:

Fixing hole 13 lower fixed holes on the pipe 12 in 10

14 pins, 20 first blocking devices, 21,51 locking housings

Portion's 212 guide grooves are emptied in 210 upper ends 211

213 pin-and-holes, 214 bottom 215A Ka Gou

215 endoporus, 22 pull lines, 221 lower end holding parts

23,52,54 springs, 24,53 Breech blocks, 240 pins

241 split groove perforate 241A perforate 243 tenons

Endoporus 30 first inner sleeve 30A second inner sleeve of 245 Breech blocks

30B the 3rd inner sleeve 31 beads 32,32A, 32B dash forward and buckle

Manage 42,62,82 times button holes of button hole on 41,61,81 in 40

43,63,83 button holes, 44,64,84 fixing holes, 50 second blocking devices

Unlock hole on the 5110 release ducts 5111,511 upper ends

5120 horizontal locking holes, 5114 pin-and-holes, 512 bottoms

531 second times buttons of button hole lockweight in 514 pins, 523 caves

532 slide blocks, 533 big ends, 534 depressions

552 times unlock holes of button lockweight on 55 second Breech blocks 551 second

553 inner slides, 60 outer tubes 70 the 3rd blocking device

Button lockweight 80 big outer tubes on 731 the 3rd times button lockweights 751 the 3rd

Consult Fig. 1, the lock control devices of luggage case multistage pull bar provided by the utility model, its pull rod device is provided in a side of the below of trunk draw bar pedestal and controls the flexible of pull rod device by the handle button (not shown) that is located at the pedestal top, in preferred embodiment of the present utility model, this pull rod device comprises three groups of blocking devices at least, interior pipe, middle pipe, outer tube and big outer tube, and at middle pipe, be provided with on outer tube and the big outer tube outer wall, following button hole, now consult Fig. 1 to Fig. 3, with first to the 3rd blocking device 20 of a preferred embodiment of the present utility model, in 50 and 70 cooperations, in, outer tube and big outer tube (10,40,60,80) structure describe in detail as after.

The utility model is in order to reach above-mentioned purpose and effect, the technological means that it adopted, mainly comprise: one can be for the blocking device of multistage pull bar lock control use, this blocking device is characterised in that the body of this device has a vertical unlock hole and a horizontal obturator hernia and body bottom and has a latch; Its another feature can be communicated with each other for this vertical unlock hole and horizontal obturator hernia, and be provided with in this horizontal obturator hernia can the locking of electing property of the right and left the Breech block device, thereby make this Breech block can be when pull bar is pulled up to peak, button terminates in the last button hole of its relevant pull bar, and when pull bar is contracted to minimum point, can detain the following button hole that terminates in its relevant pull bar, thereby make pull bar lock control devices of the present utility model can be specially adapted to the lock control devices of multistage pull bar.

In detail, the utility model luggage case multistage pull bar lock control devices comprises:

One is fixed in a couple of Pulling-rod handle (not shown) lower end and manages 10, and pipe has a lower fixed hole 13 and and can interconnect fixing last fixing hole 12 with handle in this; Solid first blocking device 20 of one mat pin, 14 pins in interior pipe 10 lower ends;

One be located in the pipe periphery middle pipe 40 that can slide within it for interior pipe, in this on side of pipe and be provided with upper and lower button hole 41,42 and about two button hole 43-43 and be located in fixing hole 44-44 on the pipe both sides, lower end;

One be set in pipe 40 upper ends and with two prominent button 32-32 detain respectively terminate in pipe 40 about first sleeve 30 of two button hole 43-43;

One with solid second blocking device 50 of managing in this on 40 lower end fixing hole 44-44 of pin 514 pins;

One be located in the pipe periphery can supply in the outer tube 60 that slides within it of pipe, a side of outer tube 60 is provided with upper and lower button hole 61,62, and respectively establishes a button hole 63-63 in the both sides, upper end and be located at the fixing hole 64-64 of both sides, outer tube 60 lower end;

One be set in outer tube 60 upper ends and with two prominent button 32A-32A detain respectively terminate in outer tube 60 about the second sleeve 30A of two button hole 63-63;

One with solid the 3rd blocking device 70 on this outer tube 60 lower end fixing hole 64-64 of pin 714 pins;

One is located at the big outer tube 80 that the outer tube periphery can slide for outer tube within it, and a side of this big outer tube 80 is provided with upper and lower button hole 81,82, and two button hole 83-83 and be located at the fixing hole 84-84 of big outer tube 80 lower ends about establishing in the both sides, upper end;

One be set in big outer tube 80 upper ends and with two prominent button 32B-32B detain respectively terminate in big outer tube 80 about the 3rd sleeve 30B of two button hole 83-83;

One is located at the lower end of big outer tube 80 and the base 90 that is fixed together with its fixing hole 84-84;

First blocking device 20 wherein shown in the 2nd and 3 figure, comprising: one first locking housing 21, its upper end 210 has a guide groove 212, and is provided with a pin-and-hole 213, but mat pin 14 pins be fixed in the lower fixed hole 13 of lower end of pipe 10;

Be provided with an endoporus 215 (seeing Fig. 2 and Fig. 3) in the bottom 214 of this locking housing 21;

One is located at the spring 23 of the first locking housing, 21 bottom endoporus 215;

One is located at the Breech block 24 of the first locking housing, 21 bottom endoporus 215, one end of this Breech block 24 is a pin 240, its side is respectively equipped with one and splits groove perforate 241 and perforate 241A communicates with the endoporus 245 of Breech block 24, the end face of this Breech block 24 is established a tenon 243 in addition, so that engage mutually with the draw-in groove 215A of the inner top surface of the endoporus 215 of locking housing 21 and locate, be beneficial to correct installation;

One is located at the latch 217 of the bottom of the first locking housing 21;

One flexible traction cable wire 22, its upper end holding part (not shown) is the button (not shown) that is connected in above-mentioned handle, its lower end holding part 221 then stretches into endoporus 215 (consulting Fig. 3) via the guide groove 212 of the upper end 210 of the above-mentioned first locking housing 21, is held in through the side direction perforate 241 of Breech block 24 in the endoporus 215 of Breech block 24 again and button press action this pull line 22 of mat of handle moved with first blocking device fuses;

And this second blocking device 50 comprises: one second locking housing 51, the slip Breech block 53 of one tool slide block 532 and second time button lockweight 531, spring 52,54 and have on second a button lockweight 551, second Breech block 55 of following unlock hole 552 and inner slide 553, wherein, the first half 511 of this second locking housing 51 is for having vertical release duct 5110, last unlock hole 5111 (see figure 4)s and recess 513 and pin-and-hole 5114, wherein, release duct 5110 communicates with last unlock hole 5111, and pin-and-hole 5114 is that mat pin 514 is solid on the lower end of middle pipe 40 fixing hole 44 with the second locking housing, 51 pins; And housing Lower Half 512 is the horizontal locking hole 5120 that holds the second Breech block associated component, and this hole 5120 is with vertically release duct 5110 and last unlock hole 5111 are communicated with each other; Can hold spring 54 and slip Breech block 53 in the inner slide 553 of this second Breech block 55, the slide block 532 of Breech block 53 has a big end 533, the size of the size of this big end 533 and inner slide 553 is big quite and than the inner slide peristoma, so big end 533, can pack into by the open bottom of inner slide 553, the other end of its big end 533 has a depression 534 (see figure 2)s, can settle spring 54 in it, make second time button lockweight 531 be subjected to the normal maintenance of spring 54 effects to stretch out state, this second Breech block 55 second on button lockweight 551 be placed on second time of slip Breech block 53 at spring 52 and buckle its often maintenance projection state that makes on the lockweight 531, only after unlock hole 552 stretches into for the latch 217 of its epimere under it, be the retraction state, detailed as following.

By this, when the handle button (not shown) of pull rod device is not pressed, shown in Fig. 4 A and Fig. 4 B, pull rod device is contraction state, in the pipe, middle Guan Ze was hidden in the outer tube during pipe was hidden in making, and outer tube is hidden in the big outer tube, and first blocking device 20 of pipe 10 lower ends in being located at, the following button hole 42 of pipe 40 during the pin 240 of its Breech block 24 is buckled by the effect of spring 23 to terminate in; And the latch 217 of the housing bottom of first blocking device 20 is inserted in vertical release duct 5110 of second blocking device 50 and goes up in the unlock hole 5111, and stretch within the following unlock hole 552 of second Breech block 53, make second blocking device 50 Breech block 55 second on button lockweight 551 shrink in the inwall of outer tube 60, and second time button lockweight 531 button of second blocking device 50 are terminated in the following button hole 62 of outer tube, simultaneously, also make the 3rd blocking device 70 the 3rd on button lockweight 751 retractions and make the 3rd time button lockweight 731 button terminate in the following button hole 82 of big outer tube 80, pull rod device is terminated in shrinks positioning states (shown in Fig. 4 A and Fig. 4 B); After the handle button of pull rod device is pressed, the pull line 22 of this first blocking device 20 is up spurred, thereby the following button hole 42 that the spring 23 that makes first blocking device 20 is compressed the pin 240 that makes Breech block 24 and middle pipe 40 forms separation graph system shown in 5A figure, and the handle of pull rod device can up be pulled out interior pipe, and the latch 217 of first blocking device, 20 bottoms is separated with the following unlock hole 552 of second blocking device 50, this moment second blocking device 50 second on button lockweight 551 toward overhanging and touch outer tube wall, when interior pipe 10 continues up to be pulled up to the end, just manage in driving and up draw high, make second blocking device also up draw high button lockweight 551 on second; The last button hole 41 of pipe 40 in pin 240 pin that pull rod device up pulls on interior pipe 10 Breech block 24 of first blocking device 20 that rises to its lower end terminates in and when stopping, in like manner, middle pipe 40 and outer tube 60 are also successively drawn high, until second blocking device 50 of middle pipe lower end second on button lockweight 551 and outer tube lower end the 3rd blocking device 70 second on button lockweight 751 detain the last button hole 81 of the last button hole 61 that terminates in outer tube and big outer tube respectively and when stopping, thereby the pull bar that makes the trunk draw bar device is pulled to full elongation state, shown in Fig. 6 A and Fig. 6 B, walk in tow for luggage case; Otherwise, when pull rod device desire row shrinks, just push the handle button, making pin 240 and the last button hole 41 of middle pipe of Breech block 24 of first blocking device 20 of 22 interlocks of the first flexible traction cable wire remove button ends and concerning, when pressing the lower handle button, but manage in 40 in 10 retractions of interior pipe, when the latch 217 of the bottom of this first blocking device 20 is inserted the unlock hole 552 of second blocking device 50, and make second blocking device 50 second on button lockweight 551 button terminate in the relation broken of the last button hole 61 of outer tube 60, as continuing to push button again, make the 3rd blocking device 70 the 3rd on the button also removed with the last button hole 81 of big outer tube 80 of the pin 751 of button Breech block 75 only concern, but manage in 40 in pipe 10 retractions then, but and among the middle pipe retraction outer tube 60, outer tube 60 is again in the big outer tube 80 of retraction, and make trunk draw bar integral body present contraction state, shown in Fig. 4 A and Fig. 4 B.

Should be noted that, the foregoing description of the present utility model, be to use three groups of blocking devices 20,50 and 70 and the interior pipe 10 that matches, middle pipe 40, outer tube 60 and big outer tube 80 etc., so in fact, first blocking device 20 of the present utility model only needs one for the Active Locking element, and second and third blocking device 50 and 70 is passive blocking element, the needs that can use according to reality increase and decrease its number arbitrarily, and increase and decrease simultaneously matches and manages or outer tube in second and third blocking device (except that the last blocking device of bottommost is not established latch) with latch and the relevant multistage thereof, making pull rod device of the present utility model have two groups or three groups of above blocking device and multistage telescopic levers, is the easy predictable fact.

The utility model second preferred embodiment, as Fig. 7 and shown in Figure 10, be that housing 21A with first blocking device 20 makes with latch 217A and separates structure, so that can separating with latch 217A, housing 21A is shaped, give again and being combined into one, for this reason, as shown in Figure 7, in the first locking housing 21A lower end one draw-in groove 216 is set, be beneficial to die operation, establish a grab 2161 (see figure 10)s in it again, and the end face of latch 217A is made a tenon portion 2170 blocking device, tenon portion establishes 2170 rear ends an elastic fastening hook 2171, when making up, the tenon portion 2170 of latch 217A can directly insert in the draw-in groove 216 of locking housing 21A bottom in order to do both, when elastic fastening hook 2171 and grab 2161 hooks, the combination operation reaches promptly to accuse and finishes, as shown in figure 10.

In addition for the first half 210 and 511 of protection locking housing 21A and 51 not the pull bar that is sheathed on it of reason cause the locking anergy because of be out of shape by the external force effect, the both sides of the upper end 511 of the second locking housing 51 can be provided with a guide groove 5115 respectively, and the lower end of protecting part 500 that is added thereon, then be provided with a vertical guide groove 501, so that first and second blocking device can combine via protecting part 500, can protect the second locking housing to avoid being subjected to the external force effect first and be out of shape, second after latch 217A increases, can obtain normal unlocking function because of the guiding protective of guide groove 501; The part that surplus person's member is identical with above-mentioned first embodiment all is marked with identical number, and relevant explanation is omitted.

The utility model the 3rd preferred embodiment, as Fig. 8,9 and shown in Figure 10, be that housing 51A with second blocking device 50 makes the same configuration shown in the first locking housing 21A of the 3rd preferred embodiment, for example the bottom with the second locking housing 51A is provided with a draw-in groove 516, have tenon portion 5170 and elastic fastening hook 5171 and have the part of protecting 500 and latch 517A made, its effect is identical with second embodiment, and relevant explanation is omitted.

Should illustrate around here, be second embodiment be add on the second locking housing 51A protect part 500, the three embodiment then add on the 3rd locking housing 71 protect part 500 with protect respectively because of pull bar in when pulling, the shearing action that is generated, the distortion that is caused.

In sum, the lock control devices of luggage case multistage pull bar of the present utility model, comprise: one is located at first blocking device of interior pipe lower end, one is mounted on second blocking device of middle pipe lower end, one the 3rd blocking device and that is mounted on the outer tube lower end is located at the pull line between the handle button and first blocking device etc., first blocking device can be stretched in second blocking device, second blocking device can stretch in the 3rd blocking device, the collapsing length performance that can make the luggage case telescopic lever is to ultimate attainment, and when telescopic lever shrinks, no gap generates between pull bar and pedestal, so as little luggage case have enough telescopic levers length possibility and can be compressed to shortest length when shrinking.

Claims (16)

1. the lock control devices of a luggage case multistage pull bar is provided in a side of on the pull rod device with handle and multistage pull bars such as button, interior pipe, middle pipe and outer tube thereof, it is characterized in that this lock control devices comprises:

One is located at first blocking device of interior pipe lower end, and this first blocking device bottom has a latch;

One is located at second blocking device of pipe lower end in this, has a unlock hole on this second blocking device position corresponding to the latch of this first blocking device; And

One is located at the flexible traction rope elongation arrangment between the handle button and first blocking device;

This flexible traction rope elongation arrangment is in order to controlling the keying of this first blocking device, and the latch of this first blocking device bottom is one can stretch into the unlock hole of second blocking device top, to control second blocking device to button hole release down; Make second blocking device detain so that pull bar can up spur and terminate in its relevant last button hole, and make pull bar can be stretched to peak.

2. the lock control devices of luggage case multistage pull bar according to claim 1 is characterized in that: this second blocking device comprises that one second locking housing, can be contained in first spring, slip Breech block, in the second Breech block housing and be placed in the latch that second spring on the slip Breech block and second Breech block and are located at this second locking housing bottom.

3. the lock control devices of luggage case multistage pull bar according to claim 1 is characterized in that: this first blocking device comprises that one has the first locking housing of endoporus; One is located at the spring of this first locking housing endoporus; One end of one flexible wire rope can be fastened in the latch that a Breech block and of being located at the first blocking device endoporus in this endoporus is located at this first locking housing bottom via this spring.

4. the lock control devices of luggage case multistage pull bar according to claim 1 is characterized in that: this first blocking device is an active member, and second blocking device is controlled and the passive device of release by first blocking device with the latter.

5. the lock control devices of luggage case multistage pull bar according to claim 2 is characterized in that: the first half of this second blocking device is that to have that the dwindle portion suitable with middle bore can mutually combine with middle pipe bottom be one.

6. the lock control devices of luggage case multistage pull bar according to claim 2 is characterized in that: this second blocking device Lower Half is to hold the lateral recesses of second Breech block, and this depression is communicated with each other with vertical unlock hole.

7. the lock control devices of a luggage case multistage pull bar is provided in a side of on the pull rod device with handle and multistage pull bars such as button, interior pipe, middle pipe, outer tube and big outer tube thereof, it is characterized in that this lock control devices comprises:

One is located at first blocking device of interior pipe lower end, and this first blocking device bottom has a latch;

One is located at second blocking device of pipe lower end in this, and this second blocking device bottom has a latch, and has a unlock hole on the position of second blocking device corresponding to the latch of this first blocking device;

One is located at the 3rd blocking device of this outer tube lower end, and the 3rd blocking device bottom has a latch, and has a unlock hole on the position of the 3rd blocking device corresponding to the latch of this second blocking device; And

One is located at the flexible traction rope elongation arrangment between the handle button and first blocking device;

This flexible traction rope elongation arrangment is in order to controlling the keying of this first blocking device, and the latch of this first blocking device bottom is one can stretch into the unlock hole of second blocking device top, to control second blocking device to button hole release down; And the latch of second blocking device bottom is one can stretch into the unlock hole of the 3rd blocking device top, to control the 3rd blocking device to button hole release down, make second and third blocking device successively detain respectively so that pull bar can up spur and terminate in its relevant last button hole, and make pull bar can be stretched to peak.

8. the lock control devices of luggage case multistage pull bar according to claim 7 is characterized in that: this second blocking device comprises that one second locking housing, can be contained in first spring, slip Breech block, in the second Breech block housing and be placed in the latch that second spring on the slip Breech block and second Breech block and are located at this second locking housing bottom.

9. the lock control devices of luggage case multistage pull bar according to claim 7 is characterized in that: this first blocking device comprises that one has the first locking housing of endoporus; One is located at the spring of this first locking housing endoporus; One Breech block and of being located at the first blocking device endoporus is located at the latch of this first locking housing bottom.

10. the lock control devices of luggage case multistage pull bar according to claim 7 is characterized in that: this first blocking device is an active member, and second blocking device is controlled and the passive device of release by first blocking device with the latter.

11. the lock control devices of luggage case multistage pull bar according to claim 8 is characterized in that: the first half of this second blocking device is that to have that the dwindle portion suitable with middle bore can mutually combine with middle pipe bottom be one.

12. the lock control devices of luggage case multistage pull bar according to claim 8, it is characterized in that: this second blocking device Lower Half is to hold the lateral recesses of second Breech block, this depression is communicated with each other with vertical unlock hole, one end of this second locking pin block is established a protuberance for being nested with spring, the other end is then established the locking pin, terminates in the button hole of outer tube with pin.

13. the lock control devices according to claim 1 or 7 described luggage case multistage pull bars is characterized in that: this latch system that is located at blocking device bottom and locking housing are constructed after the moulding respectively more chimeric being integral mutually with separate type.

14. the lock control devices according to claim 1 or 7 described luggage case multistage pull bars is characterized in that: the upper end of this blocking device comprises that further one can protect part with the locking housing is combined as a whole, is not out of shape because of the stressed of pull bar with protection locking housing.

15. the lock control devices of a luggage case multistage pull bar, mainly comprise can supply the blocking device of multistage pull bar lower end lock control, the body that it is characterized in that this blocking device has a vertical unlock hole, one horizontal obturator hernia and is located at the latch of body bottom, this vertical unlock hole is communicated with each other with horizontal obturator hernia, what be provided with the same axial line of can electing property of the right and left unblanking in this horizontal obturator hernia goes up button lockweight and button lockweight down, thereby make this blocking device can be when its relevant pull bar is pulled up to the default position of peak, button terminates in the outer button hole of the outer tube of its relevant pull bar, and when its relevant pull bar is contracted to the predeterminated position of minimum point, can detain the following button hole of the outer tube that terminates in its relevant pull bar.

16. the lock control devices of luggage case multistage pull bar according to claim 15, it is characterized in that: this blocking device comprises one or more passive device, and its upper end can cooperate the blocking device acting in conjunction of the active elements that the button of a tension member controls to reach the lock control purpose of multistage pull bar.

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