CN2561984Y

CN2561984Y - Telescopic rod

Info

Publication number: CN2561984Y
Application number: CN 02243092
Authority: CN
Inventors: 马圣钦
Original assignee: DEYOU ENTERPRISE Co Ltd
Current assignee: DEYOU ENTERPRISE Co Ltd
Priority date: 2002-07-31
Filing date: 2002-07-31
Publication date: 2003-07-23
Anticipated expiration: 2012-07-31

Abstract

The utility model relates to a telescopic rod which comprises an outer tube and an inner rob, wherein the side wall of the outer tube is provided with at least two positioning holes, and both ends are respectively provided with a shield-stopping part. The inner end of the inner rod is provided with a draw piece that can displace axially, a clamp-stopper piece that can displace in a radial direction and an elastic piece that pulls the clamp-stopper piece to the direction of the draw piece. When the inner rod extends out until the inner end and bunts to the bias outer end of the outer tube, the draw piece is pulled to an involution position by the shield-stopping part of the outer end, so the clamp-stopper piece can penetrate a through hole predetermined by the draw piece. If the draw piece is in the involution position and the through hole involutes one positioning hole at the same time, the clamp-stopper piece can convexly clamp the positioning hole better. When the inner rod draws back until the inner end and bunts to the bias inner end of the outer tube, the draw piece pulls off the involution position by the shield-stopping part of the inner end, so the clamp-stopper piece is moved inwards to stop the clamp-stopper piece forming clamping and stopping with the outer tube.

Description

Flexible rod

Technical field

The utility model relates to the flexible rod technology, relates in particular to a kind of bipartial flexible rod.

Background technique

Regular meeting is applied to " flexible rod " that can change length because of user demand in articles for daily use and the industrial utensil, suppose telescopic lever as travel suitcase or the like.Existing flexible rod has various types, for example with regard to rod member (pipe fitting) quantity, all have by the simplest bipartial to four, five sections,, two-part fastening (be complete retraction or stretch out fully), multi-section type fastening and non-section type fastening are arranged then if according to the fastening function distinguishing; As for the fastening mechanism and the mode of operation of flexible rod, numerous especially, too numerous to enumerate.Yet the structures of most existing flexible rods are all simplified inadequately, and part is more, assembling is difficult, not only makes cost higher, and the member matching relationship lacks of proper care easily, and cause operate have some setbacks, problems such as function damage.

The model utility content

Main purpose of the present utility model is promptly providing a kind of flexible rod, and it is simple in structure, cost is lower, processing ease.

For achieving the above object, a kind of flexible rod that the utility model provides includes:

One outer tube, its tube wall one side are provided with at least two positioning holes of arranging vertically, and are respectively equipped with an inner stopper part and stopper part, an outer end outside the most inclined to one side therein two positioning holes by two ends;

Bar in one stretches into its inner in the outer tube, and outer tube is made telescopic displacement relatively, and displacement range is that interior bar the inner is active between two stopper parts;

One control piece, limited displacement can be done by internal mutually bar vertically in bar the inner in being located at; When interior bar retraction to its inner supporting when terminating in inner stopper part, control piece can be passed to a closed position by inner stopper part, on the contrary when interior bar extend out to its inner supporting when terminating in the stopper part, outer end, control piece can be passed to an involutory position by the stopper part, outer end; Control piece is provided with an open-work, can be involutory with the positioning hole of outer tube;

One holding piece, limited displacement can radially be done by internal mutually bar in the inboard of control piece in the inner also position of bar in being located at; The side in holding piece positioned adjacent hole forms a clip protuberance, and the side of extreme direction is to form a guide ramp in the corresponding outer tube of clip protuberance; If when control piece position during in involutory position, holding piece is movablely to penetrate in the open-work to the clip protuberance, and simultaneously during the involutory wherein positioning hole of open-work, but the holding piece protuberance more convex clip in positioning hole; And

One elastic component, bar and holding piece in bar the inner in being located at, its elastic force two ends are butted on respectively are so as to supporting holding piece the direction toward control piece.

Described flexible rod, wherein: the outer tube outer end engages an interdiction piece in addition, and interdiction piece has the non-circular perforation of an involutory outer axial tube line, and its aperture is less than outer tube diameter; Interdiction piece forms stopper part, aforementioned outer end towards the annular end face of outer tube; Interior bar is interspersed in the perforation of interdiction piece, and outer circumferential face gently is affixed on the perforation hole wall; Interior bar the inner engages one in addition and holds shell, and the outer circumferential face that holds shell gently is affixed on the outer tube wall face; The appearance shell is provided with one in the shell wall that waits positioning hole place one side and passes the hole, and holds slightly inboard the be provided with seam shape hole vertically run through of shell in aforementioned shell wall; Aforementioned control piece is tabular, be to be inserted in the seam shape hole that holds shell, when control piece is positioned at aforementioned involutory position, the part of extreme direction is to protrude out to hold outside the shell in its corresponding outer tube, and the involutory appearance shell of open-work pass the hole, otherwise when control piece was positioned at aforementioned closed position, the part of the outer extreme direction of its corresponding outer tube was to protrude out to hold outside the shell; Aforementioned holding piece and elastic component are to be placed in the shell.

Described flexible rod, wherein: support when terminating in the stopper part, outer end of outer tube the positioning hole of the proper involutory outer tube outermost end of the open-work of control piece when interior bar is inner; When holding piece convex clip during, between the inner stopper part of the inner and outer tube of interior bar one segment distance is arranged still in the positioning hole of outer tube inner terminal.

Described flexible rod, wherein: the lateral margin of extreme direction is to form an inclined-plane peritreme in the corresponding outer tube of the open-work of control piece, and its true dip direction is the guide ramp corresponding to holding piece.

Described flexible rod, wherein: holding piece is provided with an appearance hole in an opposite side of clip protuberance; Elastic component is a pressure spring, and the part is placed in the hole.

Description of drawings

Fig. 1 is the axial sectional view that is applied to (two groups) the utility model one preferred embodiment of Travelling trunk pulling handle, and the bar fastening is in the state of outer tube inner terminal in showing;

Fig. 2 is the inner enlarged view partly of interior bar among Fig. 1;

Fig. 3 is the action schematic representation of the utility model one preferred embodiment, and the bar retraction is to the state of inner terminal in showing;

Fig. 4 is the action schematic representation of the utility model one preferred embodiment, and bar stretches out the state in the process in showing;

Fig. 5 is the action schematic representation of the utility model one preferred embodiment, and bar extend out to outermost end and fastening in the state of outer tube outermost end in showing;

Fig. 6 is the action schematic representation of the utility model one preferred embodiment, the state in showing in the bar retraction process;

Fig. 7 is the action schematic representation of the utility model one preferred embodiment, and the bar fastening is in the state of outer tube another location in showing.

Embodiment

Please consult Fig. 1 and Fig. 2 earlier, wherein, Fig. 1 shows that the flexible rod 10 with two groups of the utility model one preferred embodiments adds leader's 70 application as a Travelling trunk pulling handle 80 (but the utility model is not limited to be applied in travel suitcase), and Fig. 2 is the flexible rod 10 bottoms enlarged view partly in Fig. 1 left side.The flexible rod 10 of the utility model one preferred embodiment includes:

One outer tube 20 is the rectangular straight hard tubes of a section, and a wherein side of its tube wall is provided with along the some rectangle positioning holes 21 that distribute between axial grade.In application examples shown in Figure 1, outer tube 20 is the back side of being fixed in a travel suitcase (not shown) with upright state, and the inner of outer tube 20 (bottom among the figure) sealed, and makes outer tube 20 bottom ends form an inner stopper part 22.The outer end of outer tube 20 (top among the figure) chimeric one is the interdiction piece 23 of square frame shape, and perforation 24 cross sections of interdiction piece 23 are also rectangular, and the ring-type bottom surface of interdiction piece 23 forms stopper part, an outer end 25.Vertically in the positioning hole 21 of Pai Lieing, the position at two ends two positioning holes 21 of (promptly minimum and the highest among the figure) be respectively appropriateness near two

stopper parts

22,25.

Bar 30 in one is that a length equates with outer tube 20, but the less straight hard tube of external diameter, its sectional shape is corresponding to the rectangle perforation 24 of interdiction piece 23.Interior bar 30 is that its inner is stretched in the outer tube 20 via perforation 24, and end is borrowed the bigger box-like appearance shell 32 of a latch 31 fixed external diameters within it, the surrounded surface that holds shell 32 gently is affixed on outer tube 20 internal faces, bar 30 top pole faces gently are affixed on perforation 24 hole walls in cooperating, bar 30 can be stablized swimmingly along axially making telescopic displacement in making, and can't make twisting action.When 30 on interior bar moves, can support the inner stopper part 22 (as shown in Figure 3) that terminates in outer tube 20 bottoms to holding shell 32 bottom surfaces at most toward interior retraction, stretch out outward at most and can support the stopper part, outer end 25 (as shown in Figure 5) that terminates in outer tube 20 tops to the end face that holds shell 32 (bar 30 partly in protruding).The shell wall that holds shell 32 corresponding positioning holes 21 places one side is provided with one and passes hole 33, and, hold the slightly inboard seam shape hole 34 that be provided with a parallel shell wall and up and down run through of shell 32 in aforementioned shell wall, in addition, hold shell 32 inside and be provided with two guide plates 35 arranged side by side up and down.

One control piece 40 is tabular, in the appearance shell 32 seam shape holes 34 of bar 30 the inners, can axially do upper and lower displacement along interior bar 30 in being inserted in.The axial length of control piece 40 is greater than seam shape hole 34, and promptly control piece 40 has an end at least and protrudes out and hold outside the shell 32.The root edge of control piece 40 remains on and holds shell 32 belows and a protruding lip 41 that outwards bends is arranged, and excessively up stretches in order to prevent control piece 40.Control piece 40 is provided with the rectangle open-work 42 of a break-through plate face, sees also Fig. 2, and the lateral margin (i.e. figure medium root edge) of extreme direction is to form an inclined-plane peritreme 43 in the open-work 42 corresponding outer tubes 20, is to be tilted toward the direction of outer tube 20 outer ends simultaneously outward by control piece 40 inner side surfaces.When interior bar 30 toward interior retractions during to minimum point, as shown in Figure 3, control piece 40 can be raised to one " closed position " (mutually internally bar 30) by the inner stopper part 22 of outer tube 20 bottoms, and the top of control piece 40 convexedly stretched in and held shell 32 tops this moment, and open-work 42 be higher than hold shell 32 pass hole 33.Otherwise, when interior bar 30 extend out to peak outward, as shown in Figure 5, control piece 40 can be forced down to one " involutory position " by the stopper part, outer end 25 on outer tube 20 tops, the bottom of control piece 40 convexedly stretched in and held shell 32 belows this moment, and open-work 42 is just with to pass hole 33 involutory.

One holding piece 50 is long block, is placed in the shell 32 and between two guide plates 35, can radially do displacement along interior bar 30, and displacement path is corresponding between positioning hole 21 places, one side and the opposite side, and point to appearance shell 32 sides pass hole 33.One end of the contiguous control pieces 40 of holding piece 50 forms a clip protuberance 51, the side of clip protuberance 51 corresponding outer tube 20 outer extreme directions (i.e. end face among the figure) be a parallel alley to the plane, the side of corresponding outer tube 20 interior extreme directions then forms a guide ramp 52.When control piece 40 is positioned at aforementioned involutory position, holding piece 50 movable to its clip protuberance 51 pass the open-work 42 of control piece 40 and arrive hold shell 32 pass hole 33, and as shown in Figure 2, if move with the relative axle of outer tube 20 by interior bar 30, hold shell 32 pass hole 33 just and wherein positioning holes 21 of outer tube 20 involutory, then clip protuberance 51 more can protrude out to positioning hole 21.In addition, holding piece 50 has by the other end toward the appearance hole 53 that is recessed.

One elastic component 60, present embodiment adopts a pressure spring, is placed in shell 32 interior also positions and at holding piece 50 side of holding hole 53 is set, and the spring local positioning is in holding hole 53, the elastic force two ends are butted on respectively and hold shell 32 and holding piece 50, so as to holding piece 50 is supported toward control piece 40 place directions.

More than be the composition structure of the flexible rod 10 of the utility model one preferred embodiment.In application examples shown in Figure 1, be that two outer tubes 20 of two groups of aforementioned flexible rods 10 are existed side by side and outer end mode up is fixed in aforementioned travel suitcase (not shown) with parallel, and, constitute a Travelling trunk pulling handle 80 with the outer end (top) that leader 70 bridges at bar 30 in two.In the legend, two flexible rods 10 be with heterochiral mode balanced configuration (for example the positioning hole 21 of each outer tube 20 be the position in a side outwardly, the rest may be inferred by analogy), but this unrestricted important document.

The use and the manner of execution of flexible rod 10 of the present utility model now are described with regard to the aforementioned applications example:

Illustrate that at first Travelling trunk pulling handle 80 fastenings are in the state of complete condensation, promptly as shown in Figure 1, 2, interior bar 30 is except part, top, outer end, shaft almost completely inserts in the outer tube 20, and it is the minimum positioning holes 21 of involutory outer tube 20 inner terminals that the appearance shell 32 of interior bar 30 the inners passes hole 33, but holds 22 a bit of distances of maintenance in inner stopper part of shell 32 bottom surfaces and outer tube 20 bottoms; Simultaneously, 40 of control pieces are in aforementioned involutory position, and holding piece 50 is because of being subjected to elastic component 60 pushing and pressing, thus its clip protuberance 51 be pass the open-work 42 of control piece 40 and appearance shell 32 pass hole 33, protrude out to the minimum positioning hole 21 (and protruding the pipe face slightly) of outer tube 20, form with outer tube 20 and fasten.Whereby, interior bar 30 the inners promptly with the predetermined strength fastening at outer tube 20 inner terminals, be maintained at condensed state.

If bar 30 in will pulling out, (downward with certain strength) is pressed into a bit of distance to reach lower dead center with interior bar 30 earlier, even also interior bar 30 moves to Fig. 3 position by Fig. 1 position, in the process, holding piece 50 can support and compel to lead because of the retaining that its guide ramp 52 is subjected to positioning hole 21 root edges at the beginning, yearn for the 32 inboard retractions of appearance shell and take advantage of a situation along the footpath, bar 30 breaks away from the clip state with outer tube 20 in making; And then, when appearance shell 32 bottom surfaces arrive to outer tube 20 bottom ends, originally protruding control piece 40 can be raised to aforementioned closed position by inner stopper part 22 under the bottom, and control piece 40 is by moving on the involutory position in the process of closed position, open-work 42 root edges (being inclined-plane peritreme 43) that holding piece 50 can be controlled part 40 push and move in continuing that (annotate: present embodiment is set as inclined surface with open-work 42 root edges, help and compel to move do smooth and easy), contract fully to control piece 40 inboards until holding piece 50.And push against outward owing to holding piece 50 is subjected to elastic component 60, so can keep with clip protuberance 51 front end butt control pieces 40 inner side surfaces.

Interior bar 30 arrives and can up be stretched after bottom dead center, as shown in Figure 4, in the process of stretching out, because control piece 40 is subjected to holding piece 50 and compresses and can remain in the unlikely landing of closed position, therefore can be always every holding piece 50 with hold the passing between the hole 33 of shell 32, in making bar 30 unlikely with outer tube 20 formation clips.

When interior bar 30 is stretched to top dead center, that is the appearance shell 32 of interior bar 30 bottoms supports when terminating in the interdiction piece 23 on outer tube 20 tops, as shown in Figure 5, originally the control piece 40 of top epirelief can be forced down to involutory position by stopper part, outer end 25, make holding piece 50 can be once again outer move to that clip protuberance 51 penetrates the open-work 42 of control piece 40 and hold shell 32 pass hole 33, and in the present embodiment, when interior bar 30 extend out to stop, the positioning hole 21 that passes hole 33 lucky involutory outer tube 20 outermost end that holds shell 32, so the time clip protuberance 51 can directly charge into positioning hole 21, bar 30 inner fastenings are in outer tube 20 outermost end in making.

If do not need flexible rod 10 to present extreme length on using, can interior bar 30 be pressed in the outer tube 20.Similarly, one when depressing, and the retaining that the clip protuberance 51 of holding piece 50 is subjected to positioning hole 21 root edges supports and compels to lead, and can temporarily contract to outer tube 20 inside earlier, is butted on outer tube 20 internal faces and moves down with interior bar 30 with protuberance 51 front ends, as shown in Figure 6.Hold shell 32 and pass 33 pairs in hole to the second high positioning hole 21 when interior bar 30 is displaced downwardly to, holding piece 50 is promptly charged into positioning hole 21 again at once, and bar 30 fastenings are in inferior high position, as shown in Figure 7 in making.In like manner analogize, in desiring to shorten again during the protruding dew length of bar 30,, make its stage ground of inner segment fastening, present ideal length to flexible rod 10 and get final product in an inferior positioning hole 21 place height as long as continue interior bar 30 is pressed into toward in.At last, when holding piece 50 fastenings during in minimum positioning hole 21, promptly once again as shown in Figure 1, 2, flexible rod 10 is replied the state of complete condensation again.

By above explanation as can be known, the structure of flexible rod 10 provided by the utility model is very simple, and not only member is few, assembling is easy, make cost be minimized, and the matching relationship between member is succinctly reasonable, makes to operate very easy nature, and the damage problem falls in the function that the member imbalance also can not take place.

Claims

1. a flexible rod is characterized in that, includes:

2. according to the described flexible rod of claim 1, it is characterized in that wherein: the outer tube outer end engages an interdiction piece in addition, interdiction piece has the non-circular perforation of an involutory outer axial tube line, and its aperture is less than outer tube diameter; Interdiction piece forms stopper part, aforementioned outer end towards the annular end face of outer tube; Interior bar is interspersed in the perforation of interdiction piece, and outer circumferential face gently is affixed on the perforation hole wall; Interior bar the inner engages one in addition and holds shell, and the outer circumferential face that holds shell gently is affixed on the outer tube wall face; The appearance shell is provided with one in the shell wall that waits positioning hole place one side and passes the hole, and holds slightly inboard the be provided with seam shape hole vertically run through of shell in aforementioned shell wall; Aforementioned control piece is tabular, be to be inserted in the seam shape hole that holds shell, when control piece is positioned at aforementioned involutory position, the part of extreme direction is to protrude out to hold outside the shell in its corresponding outer tube, and the involutory appearance shell of open-work pass the hole, otherwise when control piece was positioned at aforementioned closed position, the part of the outer extreme direction of its corresponding outer tube was to protrude out to hold outside the shell; Aforementioned holding piece and elastic component are to be placed in the shell.

3. according to the described flexible rod of claim 1, it is characterized in that, wherein: support when terminating in the stopper part, outer end of outer tube the positioning hole of the proper involutory outer tube outermost end of the open-work of control piece when interior bar is inner; When holding piece convex clip during, between the inner stopper part of the inner and outer tube of interior bar one segment distance is arranged still in the positioning hole of outer tube inner terminal.

4. according to the described flexible rod of claim 1, it is characterized in that wherein: the lateral margin of extreme direction is to form an inclined-plane peritreme in the corresponding outer tube of the open-work of control piece, and its true dip direction is the guide ramp corresponding to holding piece.

5. according to the described flexible rod of claim 1, it is characterized in that wherein: holding piece is provided with an appearance hole in an opposite side of clip protuberance; Elastic component is a pressure spring, and the part is placed in the hole.