CN2506052Y

CN2506052Y - Improved and foldable castor type handcart

Info

Publication number: CN2506052Y
Application number: CN99900006U
Authority: CN
Inventors: 洛温斯坦·弗兰克
Original assignee: NIPPON NANEI CO Ltd
Current assignee: NIPPON NANEI CO Ltd
Priority date: 1998-10-13
Filing date: 1999-10-12
Publication date: 2002-08-14
Anticipated expiration: 2009-10-12
Also published as: WO2000021817A1; GB2342624B; GB2342624A; AR020804A1; GB9822193D0; AU6219099A

Abstract

A wheel-trolley which can be folded comprises a main body (1); a retractable handle device (7) and a pair of support leg (4) are positioned on the top or near the top (5); each of the support leg (19) is articulated with the corresponding side of the main body through an articulation device, and can be moved to an opening place from a retracting place near a bearing piece; wherein, the free end of each support leg can be opened through the bottom(6) of the main body; a truckle (9) can rotate freely around the free end of each support leg; a pair of arm (14) with each end of the arm is articulated at the free end of the corresponding support leg and can move from the retracting place near a pillar to the opening place which basically have a right angle with moving flat on which each support leg is articulated; each of the arm can bear the goods which are expected to be conveyed. The utility model is characterized in that each support leg is connected with a related sliding device (18); each of the support leg can be located at a retracting place near the main body and also can continuously slide to an opening place by adopting a slipping device; each support leg opening degree can be confined through a locking structure (17a, 20, 22, 23) which is related with each support leg and main body; and each of the pillar can be closely locked at the opening state.

Description

Improved folding castor formula hand barrow

The utility model relates to folding castor formula hand barrow such as baggage cart, and this hand barrow has telescopic handle apparatus and has the arm spare that can open the article that are used to carry luggage.

First of the present utility model provides a kind of folding castor formula hand barrow, it comprises: main component, this main component has telescopic handle apparatus and a pair of leg being located on or near upper end, each leg all is spliced on the respective side edge of main component, and can move to open position from stowed position near supporting member, at this open position, the free end of each leg can open by the articulated mounting of main component lower end; Castor is installed in the free end of each leg and rotatable; A pair of arm spare, each arm spare all has an end to be hinged on the free end of respective leg, and can move to an open position from stowed position near leg, this open position meets at right angles with the plane of each leg pivotal motion basically, at this open position, each arm spare can support article to be carried such as luggage, it is characterized in that: each leg all is connected on the relevant carriage, utilize this carriage each leg can be positioned at, also each leg can be moved to open position for use from stowed position near on the stowed position of main component.When leg was shown in an open position, the latch-up structure relevant with main component with each leg limited the open degree of each leg, and each leg is locked in their open states.

Carriage is installed on the guide piece, and this guide piece is arranged on the main component central interior basically, and has the length that adapts with each leg, and is parallel with guide piece basically when each leg is received and kept.Guide piece comprises an elongated pipe fitting, carriage is provided with around the neighboring of this slender rectangular tube, this pipe fitting can hold one or more telescopic sections of handle apparatus simultaneously, and the free end of this pipe fitting is provided with a handle, is used for traction castor formula hand barrow when each leg is shown in an open position.

The latch-up structure that combines with main component is arranged on the lower end of main component usually, and basically with the extension that meets at right angles of carriage slip axis, the operation that latch-up structure has stopping function and cooperates carriage is with the open degree of restriction leg.

Second portion of the present utility model provides a kind of castor formula hand barrow, it is characterized in that: each leg is away from the end of castor, be provided with can with the crew-served structure of main body relative side, thereby provide the blocking device of the locked configuration complementation of a kind of and carriage interlock.

Third part of the present utility model provides a kind of folding castor formula hand barrow, this hand barrow has the extendable handle device that is made of a plurality of scalable components, it is characterized in that: blocking device is arranged between each steel ball of scalable component and the brake component, when the lateral pressure of handle apparatus main shaft forces steel ball to rest in the hole of scalable component respective end, adjacent scalable component locks together, lateral pressure is provided by a spring-loaded spool, this spool sliding type is installed in the inside of less scalable component in the adjacent scalable component, the reverse axial motion compressible spring of this less scalable component and then make steel ball enter the brake component state that whole scalable components can be unlocked at last.

By embodiment and with reference to accompanying drawing the utility model is illustrated now, wherein:

Fig. 1 is the utility model Collapsible cart front elevation,

Fig. 2 is the back view of the utility model hand barrow,

Fig. 3 is the lateral plan of the utility model hand barrow,

Fig. 4 is the front elevation of the utility model hand barrow when partially opening,

Fig. 5 is the lateral plan of the utility model hand barrow when partially opening,

Fig. 6 is the front elevation of the utility model hand barrow when opening fully,

Fig. 7 a and 7b are detail drawings, and they correspond respectively to the wherein part of Fig. 4 and a kind of mechanism is shown, and utilize this mechanism the leg of hand barrow can be fixed into open shape.

Fig. 8-the 10th, the part sectional view of catch gear, this catch gear are arranged between the adjacent scalable component of handle apparatus described in the utility model.

It shown in Fig. 1-3 the collapsible castor formula hand barrow that is in folded state, hand barrow comprises main component 1, this main component 1 has a header board 3 and back plate 3, and above-mentioned header board 2 and back plate 3 are spaced from each other to form a hollow cavity, and hollow cavity is used for partly holding a pair of leg 4.Leg 4 is provided with in the mode that is substantially parallel to each other.

Main component 1 has upper end 5 and lower end 6.Near upper end 5 be folding handle 7, this handle 7 is spliced on the handle support 8, this handle support 8 is fixed on the free end that is arranged on tubular guide central authorities with reference to Fig. 7 a and the described mode of 7b.

Near base portion 1 lower end 6 be a pair of castor 9, when leg 4 is parallel to each other basically, castor the free end of leg 4 all the time can with they separately the skew of S. A. rotate.As shown in Fig. 2 and 3, on the back plate 3 of base portion 1, stretch out a carriage 10 that can twine the two ends buckle of elastic rope, or other can be fixed to luggage etc. the allied equipment on the castor formula hand barrow.In addition, handle support 8 is hung with bracelet 11, and this bracelet 11 can be used as an anchor point has the hook end to use for the elasticity rope.

State when being the partially opening of castor formula hand barrow described in the utility model shown in the Figure 4 and 5.Under this state, handle 7 has rotated to upright position, and its principal plane is arranged essentially parallel to the principal plane of back plate 3 but is slightly offset with it at this moment, and handle support 8 is mounted on the free end of scalable pipe fitting 12a.Start button 13 also makes it launch fully according to the described mode of Fig. 8-10, can remove the lock-out state of extensible member 12a.

When leg 4 is in when launching the use location, each castor 9 has consistent S. A., that is each castor is parallel to each other basically, this situation that can be more clearly visible from Fig. 5.Spring-loaded arm spare 14 in a pair of respective shapes groove 15 that is collected in leg 4 is the expansion shape, and is in basically and the leg 4 rectangular position, plane that rotatablely moves, and in this position, arm spare 14 can deliver article such as luggage.

Shown in Figure 6 is the scalable component 12a of castor formula hand barrow, the state when 12b and 12c launch fully.Above-mentioned scalable component 12a, 12b and 12c be in the shown mode of Fig. 8-10, is locked in the appropriate location by detent ball 16.

Obviously, leg 4 needs certain device, utilizes this device can prevent them than shown in Figure 6 De Gengkai, and this is to realize by the lockout mechanism that Fig. 7 a and 7b exhibition show.Fig. 7 a removes the detail drawing that header board 2 and each arm spare 14 are positioned at hand barrow bottom under the situation of groove 15.Obviously, since arm spare be spring-loaded and without any the constraint of form, so they normally are in position shown in Figure 5.

Fig. 7 b is the part sectional view of direction shown in Fig. 7 a " A ".From Fig. 7 b, can see, roughly T-shaped end cap 17 inserts and the lower end closed and guide piece that aluminum pipe 12a shape is coincide, aluminum pipe 12d is isometric with back plate 3 basically, and thereon fastening with high slightly position, thereby the sleeve pipe 18 of respective shapes can be slided along its whole length basically.In the position shown in Fig. 7 a, obviously, sleeve pipe 18 is in the position near end cap 17, and can only be from that position upward movement.

In the end of leg 4 away from castor 9, by corresponding hinge pin 19 leg 4 is hinged on the wherein arbitrary side of sleeve pipe 18, when being in position shown in Fig. 7 a with convenient sleeve pipe 18, leg 4 can open degree be subjected to limit near the inner structure of each leg of hinge pin 19, and this hinge pin 19 is resisted against respectively on the outward flange 17a of the outside face of sleeve pipe 18 and T shape end cap 17.

In order to prevent that leg 4 from inwardly closing up, spring-loaded abutment 20 is fastened to the end of leg 4, and because the promotion of the spiral spring 21 shown in the empty outline line among Fig. 7 a, towards roughly up the direction motion shown in Fig. 7 b.The oblique ear portions 22 of catch member 20 is placed in the groove 23, the machining shape of groove 23 just in time makes oblique ear portions 22 be stuck in the back of the T shape end cap 17 corresponding 17a of ear, like this, and shown in Fig. 7 b, leg 4 is locked in the appropriate location, and can not outwards open or inwardly close up.On the other hand, because groove 23 is deep, thus when moving downward, can leg be unclamped so that it inwardly closes up by compression spring 21 catch member 20, when after use, receiving and keeping the parallel each other situation as them.The gathering of leg 4 can realize like this.At first on the direction shown in Fig. 7 b, fold two arm spares 14, because each arm spare 14 all has corresponding and locking piece 20 bevelled end caps 24, as long as arm spare 14 is folding and make end cap 17 relative locking pieces 20 maintenances motionless along their grooves 15 separately, just can allow each leg turn back to as Figure 1-3 stowed position.

Fig. 8-the 10th, second embodiment of the present utility model, for clarity sake, the part of scalable component 12a and 12b is cut.

Fig. 8 is the front elevation of main joint between scalable component 12a and the 12b, and Fig. 8 also illustrates the free end of scalable component 12a, and it comprises handle 7 and handle support 8, and this free end still is the end cap of tubulose scalable component 12a, and start button 13 stretches out from this free end.

The lower end of start button is fixed on the plunger rod 25, and this plunger rod 25 connects a spool 26 at its other end, and these spool 26 sliding types will be placed on the inside of scalable component 12a.The lower end of scalable component 12a is with flanged type end cap 27 closures, with respect to the inboard of scalable component 12 circular trough that is used to hold spiral spring 28 arranged at end cap 27, and spiral spring 28 promotes spool 26 up.

As Fig. 9, shown in Figure 10, the one side of spool 26 has a brake component 29, it is used to hold steel ball 30, and this steel ball 30 also can be contained in it by the hole 32 of the upper end of the hole 31 of the lower end of the close telescopic rod 12a of a respective shapes and a slightly little close scalable component 12b, when spool 26 is upwards pushed away by spring 28, steel ball 30 rests in the

hole

31,32, slides or fore and aft motion with respect to scalable component 12b to prevent scalable component 12a.When steel ball and brake component locked component by start button 13 downward compression plunger bars 25 when spool 26 is in position shown in Figure 10, at this moment, detent ball 30 is aimed at brake component 29 thereby scalable component 12a can be moved downward, in entering scalable component 12b fully.Equally, the lower end of unshowned scalable component 12b has a big slightly spool 26, when the end cap 27 of scalable component 12a contacts with this spool 26, the latter can move to position shown in Figure 10, so just, can unclamp scalable component 12b and 12c continuously, be stored in the position shown in Fig. 1-3 until whole assembly.

Although be particularly suitable for using according to the described folding castor formula hand barrow of the utility model first embodiment according to the described blocking device of second embodiment of the present utility model, yet, should be noted that, this blocking device also can be used for a member is made fore and aft motion with respect to another member other structures, these structures comprise other types caster wheel formula hand barrow, antenna, the umbrella class, with the supporting structure of leg, and be applicable to and require scalable component to be locked in other situations in their the telescopic structure.Equally, steel ball can replace with any other locking piece, and brake component also can be replaced by other cam configuration.

Claims

1. folding castor formula hand barrow, it comprises: main component, this main component has a telescopic handle apparatus and a pair of leg being located on or near upper end, each leg all is hinged on the respective side edge of main component, and can move to open position from stowed position near supporting member, wherein the free end of each leg can open by the articulated mounting of main component lower end; Castor is installed in the free end of each leg and rotatable; A pair of arm spare, each arm spare has an end to be hinged on the free end of respective leg, and can from move near the stowed position of leg one basically with the rectangular open position in the plane of leg pivotal motion, on this position, arm spare can support article to be carried, it is characterized in that: each leg all is connected on the relevant carriage, utilize this carriage each leg can be positioned near on the stowed position of main component, also each leg outwards can be moved to open position from stowed position, on this open position, the latch-up structure relevant with main component with each pillar limits the open degree of each leg, and each leg is locked in their open states.

2. according to the described folding castor formula hand barrow of claim 1, it is characterized in that: carriage is installed on the guide piece, this guide piece is arranged on main component in-to-in central authorities basically, and isometric with leg, and is parallel with guide piece basically when each leg is received and kept.

3. according to the described hand barrow of claim 2, it is characterized in that: guide piece comprises an elongated pipe fitting, carriage is provided with around the neighboring of this pipe fitting, pipe fitting can hold wherein one or more scalable parts of handle apparatus simultaneously, its free end is provided with one handle, is used for tractive castor formula hand barrow when each leg is shown in an open position.

4. according to claim 1 or 2 or 3 described hand barrows, it is characterized in that: the latch-up structure relevant with main component is arranged on the lower end of main component, and basically with the extension that meets at right angles of carriage slip axis, latch-up structure has stopping function and cooperates the operation of carriage can open degree with the restriction leg.

5. according to claim 1 or 2 or 3 or 4 described castor formula hand barrows, it is characterized in that: each leg away from the end of castor be provided with can with the crew-served structure of main body relative side, thereby provide a kind of blocking device of latch-up structure complementation of and carriage interlock.

6. according to the described collapsible castor formula hand barrow of claim 1, it is characterized in that: the blocking device of extendable handle is arranged between the steel ball and brake component of each scalable component, when the lateral pressure of handle apparatus main shaft forces steel ball to rest in the scalable component respective end hole, adjacent scalable component locks together, lateral pressure is provided by a spring-loaded spool, this spool is slidably mounted on the inside of less scalable component in the adjacent scalable component, this less scalable component comes compression spring and then makes steel ball enter brake component by opposite axial motion, and state so successively can unlock all scalable components.