CN1411765A

CN1411765A - Height-adjustable legs for supporting top

Info

Publication number: CN1411765A
Application number: CN02144304.1A
Authority: CN
Inventors: 卡洛·卡塔内奥
Original assignee: LIONARD Srl
Current assignee: LIONARD Srl
Priority date: 2001-10-09
Filing date: 2002-10-09
Publication date: 2003-04-23
Anticipated expiration: 2022-10-09
Also published as: ES2243655T3; EP1302133A1; CN1250135C; DE60204527T2; DK1302133T3; PT1302133E; EP1302133B1; ATE297148T1; DE60204527D1; ITMI20012076A1

Abstract

A height-adjustable leg (10, 10', 10'') for a support surface comprises an adjustment device (13, 13') in engagement in a tubular portion (12) of the leg, where said adjustment device (13, 13') is made up of a bush (14, 14') and a foot. Said foot is equipped with adjustment elements, locking elements and elements for resting upon the floor, where elements for a fast adjustment consist of matching engagement means present on said bush (14, 14') and on an elastic portion (25) of an adjustment sleeve (20, 20'), the engagement means of which can translate step by step along a vertical axis (30) when said leg is in an unloaded rest position, whereas they are forced by expansion by said locking elements into a loaded working position. Said locking elements comprise an expansion stem (21), mobile between rest and working positions, having a shape matching that of said elastic portion (25), as well as a threaded connection for a fine adjustment through rotation.

Description

The height-adjustable leg of area supported

Technical field

The present invention relates to the height-adjustable leg of area supported, particularly but be not ad hoc to be used for desk, desk or workbench.

Background technology

Expert to this area is well-known, and market demands can have can be by the as easy as rolling off a log and accurate area supported of regulating height of user.

In fact, there be at present the concern of user to the growth of the ergonomics requirement of relevant workbench.

For those health and safety standards that must before desk or workbench, keep sitting the people of several hrs these are required also to give bigger attention.

The possibility of regulating the table height that children use also is very important, so that follow child's growth gradually and avoid taking place the distortion of ridge.

To the adaptability of child's growth, and the difference between the average height of the changeability of each individual height and different people makes it be able to have adjustable range very widely.

Special concern also must give the stability by the area supported of height-adjustable leg supporting.

At first, in the example of workbench, in fact leg is bearing the sizable load in the side perpendicular to end face.

The stress of vibration is also born in supporting frequently, for example by printer or comprise the vibration stress that machinery produced of moving parts.

But, guarantee that in all user modes the stable height-adjustable leg that connects must not influence that it is attractive in appearance, this requirement also becomes important in the furniture of office.

At present, the leg of area supported is arranged, these legs use nut bolts to connect so that implement highly adjusting between the part of two telescoping tubes of leg.Be that position leg is fixed on requirement uses a locking device usually, for example pinching or the pin pattern, this locking device hinders the action of movable part.

Another is selected, and second kind of form of commercially available height-adjustable leg predicted adjusting by the moving of two telescoping tubes part of leg.The device of the suitable shape guide rail of band pin stop-motion seat plays a part to regulate and stop.

Having used plastics to make and connect regulating element to reach taking into account between the connective stability expense relevant with machining, is higher to the metal material processing expense.

Yet the form of described leg is unsatisfied from the angle of the adjusting that is easy to leg especially.In fact, for example, in order to make application of load, again must the area supported in the process of regulating operation itself can be fast and adjusting easily be good.

In addition, regulate also and should at first need not move just can carrying out the while through the operating procedure of minority such as elements such as pins.

Summary of the invention

General purpose of the present invention just provide a kind of with very easy, cheaply and particularly functional mode overcomes the adjustable legs of the shortcoming of above-mentioned prior art.

Another purpose is to obtain a kind of height-adjustable leg that is suitable for the area supported of present desk, desk or workbench.

For realizing above-mentioned purpose of the present invention, the invention provides a kind of height-adjustable leg of area supported, be included in the adjusting device of combination in the tubular portion of leg, wherein said adjusting device is made of lining and pin, it is characterized in that described pin is provided with regulating element, locking element and the element that is located on the floor, wherein: for the element of quick adjustment is included in described lining on the regulating sleeve and the coupling coupling apparatus on the elastic part, the coupling apparatus of this regulating sleeve can move step by step along vertical axis when described leg is in non-load resting position, thereby it is urged to the operating position of a load by the expansion by described locking element, wherein said locking element is included in expansion post movable between static and the operating position, described expansion post has the shape that is complementary with described elastic part, and the threaded connector that is used for the thin tuning by rotation.

Description of drawings

To become clearer from the following feature that structure of the present invention and function are described with reference to the drawings and its advantage compared with prior art, accompanying drawing is represented the height-adjustable leg of the actual area supported of the innovation principle of self according to the present invention, in the accompanying drawing:

Fig. 1 illustrates the perspective view of the height-adjustable leg of area supported of the present invention;

Fig. 2 illustrates the leg of the Fig. 1 that partly analyses and observe;

Fig. 3 is the assembly view that the part of decomposition of adjusting device of the leg of Fig. 1 is analysed and observe;

Fig. 4 and Fig. 5 are the cross sections of first embodiment that is used for the adjusting device of resting position and operating position;

Fig. 6 represents to use the adjustable legs of wheel;

Fig. 7 represents to be provided with the adjustable legs that meets aesthstic cover element;

Fig. 8 and 9 is the cutaway views of second embodiment of adjusting device that are adjusted to the adjustable legs of two differing heights;

Figure 10,10a and 11 illustrate respectively to analyse and observe second embodiment with the height-adjustable leg shown in the front view;

Figure 12,12a and 13 are respectively to analyse and observe the 3rd embodiment that height-adjustable leg is shown with front view.

The specific embodiment

With reference to accompanying drawing, the height-adjustable leg of area supported of the present invention according in the illustrating of first embodiment of the invention with label 10 whole expressions, this adjustable legs comprises the tubular portion 12 of an end, for example make, one extendible adjusting device 13 is installed at the base portion of this tubular portion by metal or other material.

According to the embodiment of first suggestion, adjusting device 13 shown in Figure 1 and that analyse and observe in Fig. 2 comprises a lining 14, can insert in the free terminal of tubular portion 12 of leg and also comprises Height Adjustable pin.

Among the embodiment for explanation the object of the invention in the decomposition assembly view of Fig. 3, lining 14 is provided with longitudinal rib 16 and connects with the pressure of tubular portion 12 the insides that are implemented in leg 10, and this lining is set as to be close to and protrudes neck 17.

Lining 14 and be placed on the coupling apparatus that wherein sleeve 20 also is provided with coupling, this device is included in the jockey between each threaded

portion

18 and 26 in first embodiment.

The screw thread of processing on the part that is made of plastics has the protruding peak and the long pitch of rounding in this example.

Pin comprises manyly can comprise regulating sleeve 20 and locking element and a telescopic post 21 along the coaxial part that vertical axis 30 moves.These become whole with device on being placed on the floor, this device comprises supports end 22 respectively and seals the profile driven member 23 of return spring 24.

Regulating sleeve 20 has a flexible top 25, and there is the bus of an Outer cylindrical on this top and becomes the bus of the interior frustum of a cone at α angle with vertical axis, and this top and column combination are realized the locking of expanding.

Tubular lower 27 is protruded a variable amount along with regulating height from leg, and tubular lower 27 preferably is provided with groove and/or reference number 28 is regulated height with expression on the other hand.Elastic part 25 comprises wall 29, and wall is provided with and cuts groove 31, and this cuts groove and radially extends from the axis 30 of the upper surface 32 of elastic part 25, and therefore cutting groove is divided into several wedge-like portion with elastic part 25.

Expansion post 21 is in top and frustum part 33 terminations.The inner surface coupling of this part and elastic part 25 is in other words with 30 one-tenth identical α angles of axis.

In the bottom, expansion post 21 has the tapering part 34 of the abutment surface 35 that constitutes termination portion 22.

Profile drive element 23 by by the interference fit stable bond in expansion post 21 first column part 36 and have larger-diameter second column part 37 and constitute, this part 37 forms the abutment surface 38 of annular.

In the embodiment shown, can see the surface 39 on the floor of being placed on of profile drive element 23, dimple 40 is in order to place annex 41, for example for placing felt piece or wheel (Fig. 6).

The spring 24 of the relative motion between regulating sleeve 20 and the post 21 is placed in the space 44 between the cylindrical wall of the conical section 34 that is in expansion post 21 and termination section 22.The action application point of spring 24 comprises the abutment surface 23 of profile driven member 23 and the annular flange 42 of supporting termination section 22.

In order to increase with the contact surface on floor and therefore to guarantee maximum stability, supporting 22 ends, termination have the pedestal of widening 45, according to different aesthetics hobbies, this pedestal can be various difformities, this pedestal can be fit to combine with cover element 46 shown in Figure 7 simultaneously, and fluting is attractive in appearance to improve it in order to hide functional element more than adjustable foot.

Fig. 8 and 9 expressions be connected to the expansion adjusting device 13 of the tubular portion 12 of height-adjustable leg 10 ' the cutaway view of second embodiment.Following description only is confined to the element of the formation different with the element that has illustrated.

The lining 14 of on the tubular portion 12 of leg 10, slotting ' and regulating sleeve 20 ' elastic part 25 coupling apparatus of coupling is set, comprise parallel slot 47 and one or more parallel ribs 48.

Threaded connector 49 is passed through in conjunction with an extension cylinder 50 in profile drive element 23 ' bottom.In fact thin tuning operation for the height of implementing leg may make and extend cylinder 50 rotations, with change profile driven member 23 ' and the floor between distance (Fig. 8 and 9).

The operation of the height-adjustable leg of area supported 10 of the present invention will be described on the basis of Figure 4 and 5, wherein leg 10 represent respectively be in non-loaded resting position one lift more than the floor and be in loaded work piece position one and be placed on the floor.

Resting position can implement to press arrow X by translation quick adjustment and press the thin tuning of arrow R by rotation, as shown in Figure 4.

By some possible position that adjustable legs is taked, represent with dotted outline with the height that changes leg along with regulating operation.Quick adjustment is to be realized by the axial action that acts on the tubular portion 27 of regulating sleeve 20 at the direction X that requires, cause each in lining 14 the moving an of pitch.

Under the effect of return spring 24, expansion post 21 is thrown off with the elastic part 25 of sleeve 20, therefore keeps sleeve each coupling coupling apparatus in position not press fit over together by big frictional force simultaneously, constitutes a kind of loose constraint.

The circular contour of screw thread impels the peak of

machining screw part

18 and 26 and the disengagement of paddy, and this just allows pitch of translation forward.This may be owing to the existence of cutting groove 31 in wall 29, and this cuts groove and promotes its direction bending at vertical axis 30, as shown by arrow F.

The weight that (Fig. 5) affacts the area supported on the lining 14 through the tubular portion of leg 12 when leg 10 is placed on the floor causes the combination gradually of wall 29, and this wall is set as against the frustoconical inner surface of the frusto-conical portion 33 with the shape that is complementary with expansion post 21.Under the load effect, the compression of spring 24 is determined in the descending motion of lining, is located on the floor up to the pedestal 45 of end connector 22.

What the expansion of elastic part 25 forced that threaded part 26 is close to lining 14 has a threaded portion 18, produces one and expansion adjusting device 13 is locked at the frictional force that requires the position.

On the other hand, thin tuning realizes that by inserting threaded

part

18 and 26 by rotation particularly this may have the operating position of load to realize in resting position and leg.

Expansion adjusting device 13 ' the operating principle of second embodiment do not change fully.

The parallel rib 48 of quick adjustment by making elastic part 25 lining 14 ' parallel slot 47 in pitch of translation implement.

On the other hand, the thin tuning of expression is by cylinder 50 in Fig. 8 and 9, rotation profile drive element 23 ' threaded connector 49 finish.

Other two embodiment of Figure 10-13 expression area supported height-adjustable leg of the present invention, respectively with 10 ' with 10 " represent.

Have the additional functional element of having described in this two embodiment, these elements allow the enforcement of quick and/or thin tuning operation and do not have downward bending.

The height-adjustable leg 10 of Figure 10 and 11 expression area supporteds ', this leg is set to apply near supporting plane 11 according to arrow X the handle apparatus 52 of axial action.

Handle 52 for example by pin 53, is connected on the telescopic tubular elements 54 of tubular portion 12 the insides that are placed on leg one or the multiple spot place.Thereby the elastic part of the free end of element 54 and regulating sleeve 20 25 is in conjunction with allowing relative rotation, affacts axial action on the handle 52 but transmit according to arrow X.

The tubular portion of leg is provided with and allows the longitudinal slot 55 of pin 53 with respect to the slip of leg itself in this embodiment.。

Thin tuning is finished by the bottom of rotation leg, according to such acting on of having described.

With 10 " expression, another embodiment of height-adjustable leg of the present invention (Figure 12 and 13) allow to regulate fast and thin tuning.Under no reclinate situation, carry out.In fact, jacket tube 56 is attached in the bottom on the tubular portion 27 of regulating sleeve 20, has the slit on the tubular portion 12 of whole leg.

In conjunction with, anchor tip for example, must transmit by the user jacket tube 56 a bit be applied to arbitrarily shift action on the sleeve and spinning movement the two.

From the above description that the reference accompanying drawing has carried out, very clear how useful especially and convenient according to height-adjustable leg of the present invention.Therefore realized the purpose in the preface of describing, mentioned.

In fact, allow the height of simple and easy and accurate adjusting leg simultaneously and have very simple and tangible aesthetic appearance, this device is guaranteed the stable connection at all working state.

The frictional force that produces between lining and the inflatable sleeve in first embodiment of adjusting device prevents relatively rotating with vibration stress.

In addition, the expansion of the elastic part of sleeve helps to allow the possible recovery in gap between lining and the regulating sleeve.

Certainly, shape shown in the shape of area supported height-adjustable leg of the present invention can be different from as an example and the shape in the accompanying drawing are not the purposes for restriction, just can be different as material yet.

Therefore protection scope of the present invention is limited by claims.

Claims

1. the height-adjustable leg (10 of an area supported, 10 ', 10 "); be included in combination in the tubular portion (12) of leg adjusting device (13; 13 '); wherein said adjusting device (13; 13 ') by lining (14; 14 ') and pin formation, it is characterized in that described pin is provided with regulating element, locking element and the element that is located on the floor, wherein: for the element of quick adjustment is included in regulating sleeve (20,20 ') on described lining (14,14 ') and elastic part (25) on the coupling coupling apparatus, the coupling apparatus of this regulating sleeve can move step by step along vertical axis (30) when described leg is in non-load resting position, thereby it is urged to the operating position of a load by the expansion by described locking element, wherein said locking element is included in expansion post (21) movable between static and the operating position, described expansion post (21) has the shape that is complementary with described elastic part (25), and the threaded connector that is used for the thin tuning by rotation.

According to the adjustable legs of claim 1 (10,10 ', 10 "), it is characterized in that described coupling coupling apparatus comprises the threaded portion (26) that a threaded portion that forms (18) and the elastic part (25) in described regulating sleeve (20) produce on the interior diameter of described lining (14).

According to the adjustable legs of claim 1 (10,10 ', 10 "), it is characterized in that described coupling coupling apparatus is included in the parallel slot (47) that forms on the interior diameter of described lining (14 ') and goes up the parallel rib (48) that forms at the described elastic part (25) of described regulating sleeve (20 ').

According to the adjustable legs of claim 1 (10,10 ', 10 "), it is characterized in that the described threaded connector (49) that is used for thin tuning comprises threaded portion (18,26).

According to the adjustable legs of claim 1 (10,10 ', 10 "), it is characterized in that the described threaded connector (49) that has that is used for thin tuning is to form between two parts of a profile drive element (23 ') and an extension (50).

According to the adjustable legs of claim 1 (10,10 ', 10 "); it is characterized in that the described element that is located on the floor comprise with the supported end joint (22) of described regulating sleeve (20,20 ') one and with the profile drive element (23,23 ') of described expansion post (21) one.

According to the adjustable legs of claim 1 (10,10 ', 10 "), it is characterized in that described expansion post (21) is in the effect of return spring (24) with to affact under the effect of load of described leg be movable between described resting position and described operating position.

According to the adjustable legs of claim 1 (10,10 ', 10 "); it is characterized in that described expansion post (21) top is for having frusto-conical portion (33); relatively vertical axis (30) tilt an angle (α) and with the inner surface coupling of described elastic part (25).

According to the adjustable legs of claim 1 (10,10 ', 10 "); it is characterized in that described elastic part (25) comprises being provided with cuts the wall (29) of groove (31), and this cuts groove and radially extends from the described axis (30) on the upper surface (32) of the described elastic part (25) of regulating sleeve (20,20 ').

According to the adjustable legs of claim 7 (10,10 ', 10 "), it is characterized in that described spring (24) has the application point of the power on the described element that is located on the floor.

11. according to the adjustable legs of claim 7 (10,10 ', 10 "), it is characterized in that application point that described spring (24) has power comprises the annular lip of the surface, abutment (38) and the described supporting termination (22) of described profile drive element (23,23 ').

12. according to the adjustable legs of claim 1 (10,10 ', 10 "), it is characterized in that described regulating sleeve (20,20 ') is provided with marker groove (28).

13. according to the adjustable legs of claim 1 (10,10 ', 10 "); it is characterized in that it is provided with one or what time is connected to handle apparatus (52) on the telescopic tubular elements (54) of the inside of the tubular portion (12) that is present in described leg, wherein said tube element (54) is connected to the elastic part (25) of regulating sleeve (20,20 ').

14. adjustable legs (10 "); it is characterized in that (10 ") are provided with the pipe (56) of a tubular portion at whole leg (12) fluting to described adjustable legs, and this leg is attached to an anchor tip on the described regulating sleeve (20,20 ') in the bottom according to claim 1.