DE10138065B4 - Springloaded Umleggriff - Google Patents

Abstract

spring loaded Umleggriff (31) with an attachment (16) for attachment to wheels, winches and the like, and one about a pivot axis (30) pivotally connected to the attachment (16) Handle part, which handle part one with the pivot axis (30) connected and a sleeve (8) penetrating bearing pin (21), which sleeve (8) is mounted axially displaceably on the bearing pin (21), wherein between sleeve (8) and a bearing head (24) arranged on the bearing pin (21) has a spring (11) is introduced, which keeps the two parts at a distance and the Spring force of the spring (11) is designed such that the sleeve (8) on the attachment (16) by the spring (11) is pressed; in which the spring force by axially pulling the handle (1) by hand from overcome the pivot axis (30) away can be and which handle part continues to have a hollow handle (1) has, in its inner opening (12) of the bearing pin (21) engages around which the handle (1) via pivot bearings (27-29) rotatable about the longitudinal axis is ...

Description

The The invention relates to a spring-loaded Umleggriff according to the preamble of claim 1

such Handles are made using wheels, Hand cranks and similar machine elements used and drawing characterized in that the Umleggriff in a first spring-loaded, e.g. upright, position is held and by appropriate train on a handle in a second, offset by 90 degrees position can be pivoted and fixed.

One such flip-over handle is e.g. as a crank handle on a crank Serving handwheel used. To turn the handwheel, the Therefore, the handle can be swung out and the handwheel can be rotated with it become. To after the operation of the Handwheel the Umleggriff no longer protrude from the handwheel let, the Umleggriff folded according to spring loaded and then pivots into its spring-loaded rest position in the Level of the handwheel into it.

at Such a Umleggriff is important that the handle itself rotatable held on the base body is which basic body consists essentially of a bolt part which passes through a sleeve; on which the handle is rotatably mounted. The entire arrangement of the the body is hereby pivotally and lockable added in an attachment, for example, about a mounting hole connected to the handle to be operated is.

A known, spring loaded Umleggriff according to the going back to the same applicant DE 81 17 492 U1 , consists of a pivotally held in the attachment bolt part, which passes through a sleeve.

The Stud part is added to the attachment with a dowel pin and held there pivotally, while the sleeve, which surrounds the bolt part, the guide for one between the sleeve part and the bolt part arranged helical compression spring takes over.

The Bolt part points near of the handle of the Umleggriffes a head with an enlarged diameter on, as an abutment for the spring serves.

Beyond of the head, but still in the area of the sleeve, is as a separate part another bolt (clamping bolt) provided, which also has a Head with enlarged diameter has, which corresponds approximately to the diameter of the head of the bolt part.

This another bolt is with a clamping sleeve near the handle bottom anchored to the handle in a corresponding bore of the handle and rotatably mounted.

The Rotary bearing of the handle is thus formed by the separately arranged Clamping bolt in conjunction with the axially outer sleeve, but also between the sleeve and the handle itself.

A Such construction has been proven, but is relatively expensive. It is required that in addition to the aforementioned bolt part, which the Swivel bearing for the Umleggriff forms, still an additional clamping bolt available is that with its own spring part in the inner bore of the handle must be anchored.

Further is taken into account, that the sleeve, which is arranged between the bolt part and the handle, relative is costly, because it must be in their axial length relative be trained long.

It is another Umleggriff according to the prior art according to on going back to the same applicant 2.Next of the catalog "Standard Parts for operation and clamping; Device and Machine Elements ", 11th edition, November 1991, page 12, transfer handles - Ganter standard "GN 598.3", became known where the pivot bearing near the handle bottom of the handle is formed by the fact that the Sleeve up in the handle bottom and in a hole located there in the handle extends and that in the region of the outer circumference of this sleeve a Locking groove is arranged, which with a corresponding locking bead on Inner circumference of the bore in the region of the handle cooperates. It is So a latching connection given when attaching the handle on the sleeve takes effect.

adversely However, this is the relatively expensive attachment of the sleeve the inner bolt part (for which a corresponding snap ring is used is) and also is disadvantageous that the aforementioned pivot bearing as a locking connection in the vicinity is formed of the handle bottom of the handle.

This leads to that the handle in the area of the closed grip floor only one low radial resilience has, so that the locking connection in this area is not very reliable.

Either one hits the handle with great force on the locking groove, whereby there is a risk that the annular bead is damaged in the interior of the handle and the locking connection no longer works, or you adjust the locking connection so that it can be easily snapped, but this is associated with the disadvantage that then the handle can be unintentionally easily removed from the sleeve.

Next the elaborate design so this design has the disadvantage that the Locking connection is only slightly resilient because they are near the handle bottom the handle is arranged.

The DE-PS 310486 discloses a hand crank with foldable handle according to the features of the preamble of claim 1. The Schwenklagernahe Pivot bearing is here by the hinge head of the attachment and the handle, as well as between a radial annular shoulder of the handle and the formed on the attachment articulated mandrel, while the pivot bearing remote Swivel through the thickened free end of the spine and the handle is formed. The handle is enough the hinge head to close to the crank arm and is there arranged in this position by the between the mandrel and the handle Held coil spring. Axially between the coil spring and the annular shoulder of the handle a perforated disc is applied to the mandrel, to turn the helical spring when turning the handle prevent. The spring pressure on the handle is transmitted through the perforated disc, which by means of radially inwardly facing projections, the in longitudinal grooves the thorn intervenes, is secured against twisting, but when moving the handle against the pressure of the coil spring together with the handle axially to the longitudinal axis of the handle.

In order to There is the disadvantage that the spring load always against the annular shoulder of the handle presses and thereby a big one Friction occurs, which reduces the life of the handle becomes. It is therefore difficult to turn the handle, because you always against the spring-loaded friction between perforated disc and annular shoulder of the handle must twist this.

Of the The invention is therefore based on the object, a Umleggriff the initially mentioned type so that it can withstand high loads is and inexpensive can be produced.

to solution the object is the invention by the features of Claim 1 characterized. Advantageous developments of Invention are in the subclaims specified.

Essential is that at least one axially outer pivot bearing is formed between the bearing pin and the handle, and at least an axially inner rotary bearing and at least one axially locking locking connection between the sleeve and the handle is formed, and further that the locking connection between the handle and the not mitdrehenden part of the Umleggriffes (sleeve) in expandable, in particular elastically resilient region of the handle opening arranged is.

Prefers is that the pivot bearing in the area of the outer handle bottom by a Head with enlarged diameter of the bolt part is formed.

With The given technical teaching now yields the essential Advantage that the pivot bearing in the outer area of the handle, i. So it is located in the bottom of the handle and far away is moved from the pivotal mounting of the Umleggriffes, during which the locking connection between the handle and the non-rotating Dividing the Umleggriffes in the handle opening, i. ie in the vicinity of the pivot axis be moved the Umleggriffes.

In order to results in the significant advantage that in addition to a heavy duty Swivel bearing, in the axially outer area of the handle (i.e., nearby the closed handle bottom) at the same time a locking connection in the axially inner region of the handle, namely arranged in the region of the handle opening becomes.

In This open area of the handle is the handle known manner much stronger radially expandable and therefore it is of particular advantage, the Rasverbindung to move in this area, because so with a firm seat of the locking connection a reliable one Locking guaranteed is.

This is a significant advantage over the prior art, because in the prior art either no locking connection was present, but a spring-loaded clamping connection with the aforementioned clamping bolt or at the second described embodiment - was the Locking connection in the vicinity of the floor, i. So in the closed part of the Handle it, which is a reliable one Locking prevented.

One Another advantage of the invention is that only a few simple components must be used resulting in a significant cost reduction in terms of production and assembly leads.

Thereby, that the latching connection is laid in the region of a sleeve according to the invention thereby in its axial length be run very short can, so manufacturing costs are saved, because it requires no longer the arrangement of a very long, expensive sleeve, but the sleeve only has to be listed very short in its axial length.

The Sleeve is used on the one hand for producing the locking connection and the axially inner Bearing with the rotatable handle and on the other hand as an abutment for a helical compression spring, on the one hand on the axially outer end face of the sleeve and on the other hand on the axially inner side of the head of the bearing pin with enlarged diameter invests.

Instead of the one mentioned here Naturally, compression springs can also be used other spring elements are used, such as e.g. elastomeric spring elements, spring sleeves, spiral springs, Leg springs and the like power storage more.

Important is the simple design of the Umleggriffes, in the way that only a simple bearing pin is used. This bearing pin forms with its bolt part of smaller diameter, the pivot bearing for the Umleggriff at its axially inner end and forms at the axially outer end a bearing head with an enlarged diameter out, which is the axially outer pivot bearing for the Handle forms.

Prefers the handle is formed of a plastic material; it can, however also all other materials are used.

Instead of the arrangement of a pivot bearing in training as a plain bearing between the bearing head of the bearing pin and the handle can also other types of bearings are used, in particular ball bearings or other bearings with rolling elements.

Important is further that the pivot bearing of the handle at two from each other axially spaced locations is formed, namely once axially on the outside Camp head nearby the handle bottom of the handle and on the other hand at an axially inner Place, namely in the area of the sleeve, the nearby of the pivot bearing of the Umleggriffes is arranged.

Thereby So is a double, widely spaced pivot bearing for the Handle provided.

in the The following is the invention with reference to only one embodiment illustrative drawings closer explained. Here are more from the drawings and their description Features and advantages of the invention.

It demonstrate:

1 : Section through a Umleggriff according to the invention in its first position.

2 : Cut through the arrangement after 1 in the second, repositioned position.

The reversing handle 31 According to the invention consists essentially of a handle part, which in two mutually perpendicular pivot positions (see 1 and 2 ) spring loaded pivoted on an attachment 16 is held.

The pivoting takes place here in the region of a pivot axis 30 and the attachment 16 has a mounting hole 17 on, for example, with which it is screwed to a handwheel as a crank.

In addition to the arrangement of a mounting hole 17 Of course, all other mounting options can be used with which an attachment 16 can be fastened on one or on a handwheel.

The reversing handle 31 in this case preferably has a handle made of plastic 1 on, which is preferably formed as a hollow cylinder. The handle 1 has a closed handle bottom in its upper end 2 on, this forms a central inner bore 12 and a lower frontally open handle opening 3 ,

Into the inner bore 12 this extends a bearing pin 21 standing near the bottom of the handle 2 a camp head 24 having enlarged diameter. Beyond the camp head 24 Here is a cavity 4 in the area of the inner bore 12 intended.

From the camp head 24 enlarged diameter, a bolt part closes 23 reduced diameter, which extends axially downwards and the pivot axis 30 with a dowel pin 18 forms in the attachment 16 is anchored.

In the lower area, the bolt part 23 two lateral and mutually opposite cut-outs 22 on that the diameter of the bolt part 23 decrease in this area.

In this way it is ensured that when turning the handle 1 from the position of 1 in the position 2 the reduced diameter portion of the bearing pin 21 in a slot 20 can move. The slot 20 goes up into an upwardly open recess 19 of the attachment 16 above.

In the folded position to 2 thus protrudes the bearing pin 21 through the slot 20 therethrough.

At the same time, however, it also has a sleeve 8th axially on the bolt part 23 of the bearing pin 21 postponed.

The sleeve 8th here has an upper stop 10 as an abutment for a spring 11 on, with its other end at the bottom of the bearing head 24 invests.

The sleeve 8th also has an outwardly directed locking bead 9 on that with an associated grip groove 5 in the area of the inner circumference of the handle 1 works together. As a result, a latching connection is created, which is rotatable.

This locking connection between the parts 5 . 9 So secure the handle 1 against axial withdrawal from the sleeve 8th , At the same time, however, a plurality of bearing surfaces for a pivot bearing are also formed in this area.

In this case forms a lower cylindrical part of the sleeve 8th a storage area 28 towards the handle 1 and beyond the locking groove 5 . 9 another storage area 29 , So there are a total of three storage areas available, namely once the storage area 27 in the area between the bearing head 24 and the inner circumference of the handle 1 and further the further storage areas 28 and 29 between sleeve 8th and the inner circumference of the handle 1 near the handle opening 3 ,

Due to the fact that the locking groove 5 . 9 in the area of the handle opening 3 of the handle 1 is moved, now this area is radially very good elastic expansion and thus a good locking force in the region of the locking groove 5 . 9 achieved.

The front side 6 of the handle 1 lies down on a corresponding stop surface 7 to the sleeve.

The sleeve 8th has for this purpose an annular, outwardly extended approach 13 on, on the front side 6 of the handle 1 strikes.

Beyond the approach 13 forms the sleeve 8th a cone surface 14 with which they are located in an associated receiving bore in the region of the recess 19 of the attachment 16 in position 1 extends into it and is held there positively. A rotation in the region of this cone connection is possible after axial lifting.

Because of the interlocking of the mutually associated conical surfaces 14 and 19 This results in an axial clearance in the region of the front side 15 the sleeve 8th ,

If the handle now in its position 2 is put down, the sleeve leans 8th with her front side 15 to the side wall 26 of the attachment 16 and is held there spring loaded.

At the same time, it has the handle in the direction of the arrow 32 against the force of the spring 11 to the right rear ( 2 ), causing the bearing head 24 from a stopper rib 25 in the area of the inner bore 12 of the handle 1 is released.

Advantage of the arrangement is that the axial length of the sleeve 8th can be chosen very short, because it no longer serves in its full length as a pivot bearing, as was known in the prior art.

Another advantage is that much fewer components are used, because it is for the pivotal mounting of the handle 1 only a total of two parts necessary, namely on the one hand, the sleeve 8th and on the other hand, the bearing pin 21 ,

The assembly of the handle is done by first of all the spring 11 with drawn tension pin 18 on the bearing pin 21 auffädelt. It will then be the sleeve 8th on the bearing pin 21 deferred and the bearing pin 21 will then be in the attachment 16 introduced and the tension pin 18 assembled. It then becomes just the handle 1 in the opposite direction to the indicated arrow direction 32 on the bearing pin 21 plugged and abruptly moved down so that it is on the one hand for producing the latching connection in the region of the parts 5 . 9 comes.

Thus, the handle on at least two spaced bearing surfaces 27 and 28 . 29 rotatably mounted. The locking connection is highly resilient and secures the handle 1 perfect against unintentional removal in the direction of the arrow 32 ,

In the above description it was stated that the pivot bearing of the handle 1 by means of the storage area 27 takes place, the two other bearing surfaces in the axial distance 28 . 29 lie opposite. However, the invention is not limited thereto.

It can be the storage area 27 only a single further, axially spaced bearing surface 28 , or 29 be arranged opposite. It is also possible to use the storage area 28 and 29 to drop and instead the pivot bearing in the area of the locking groove 5 . 9 relocate. The invention thus provides all the aforementioned possibilities.

1

Handle

2

handle bottom

3

grip opening

4

cavity

5

handle groove

6

front

7

attack

8th

shell

9

latching bead

10

attack

11

feather

12

internal bore

13

approach

14

conical surface

15

front

16

attachment

17

mounting hole

18

dowel pin

19

recess

20

slot

21

bearing bolt

22

milled

23

bolt part

24

bearing head

25

stop rib

26

Side wall

27

storage area

28

storage area

29

storage area

30

swivel axis

31

Retractable

32

arrow

Claims (11)

Springloaded Umleggriff ( 31 ) with an attachment ( 16 ) for attachment to wheels, winches and the like, and one about a pivot axis ( 30 ) pivotable with the attachment ( 16 ) Grip part, which handle part with a pivot axis ( 30 ) and a sleeve ( 8th ) penetrating bearing pin ( 21 ), which sleeve ( 8th ) on the bearing pin ( 21 ) Is mounted axially displaceable, wherein between sleeve ( 8th ) and one on the bearing pin ( 21 ) arranged bearing head ( 24 ) a feather ( 11 ) is introduced, which keeps the two parts at a distance and the spring force of the spring ( 11 ) is designed such that the sleeve ( 8th ) on the attachment ( 16 ) by the spring ( 11 ) is pressed; wherein the spring force by axial pulling the handle ( 1 ) by hand from the pivot axis ( 30 ) can be overcome away and which handle part continues to have a hollow handle ( 1 ), in the inner opening ( 12 ) of the bearing bolts ( 21 ) engages around which the handle ( 1 ) via pivot bearings ( 27 - 29 ) is rotatable about the longitudinal axis, wherein at least one pivot bearing ( 27 ) between the bearing pin ( 21 ) and the handle ( 1 ) is formed, characterized in that at least one axially locking locking connection ( 5 . 9 ) and at least one further pivot bearing ( 28 . 29 ) between the sleeve ( 8th ) and the area of an expandable handle opening ( 3 ) of the handle ( 1 ) are formed. Springloaded Umleggriff ( 31 ) according to claim 1, characterized in that the bearing pin ( 21 ) via a bolt part ( 23 ) with the pivot axis ( 30 ) and at the opposite free end of the bearing pin ( 21 ) the bearing head ( 24 ) is arranged, which an axial trigger safety between bolt part ( 23 ) and sleeve ( 8th ) and as an abutment for the spring ( 11 ) between sleeve ( 8th ) and the head serves. Springloaded Umleggriff ( 31 ) according to one of claims 1 or 2, characterized in that the at least one first pivot bearing ( 27 ) through the bearing head ( 24 ) is formed, which has a larger diameter than the bolt part ( 23 ) having. Springloaded Umleggriff ( 31 ) according to one of claims 1 to 3, characterized in that the at least one first pivot bearing ( 27 ) is formed at the free end of the handle part, which of the pivot axis ( 30 ) is opposite. Springloaded Umleggriff ( 31 ) according to one of claims 1 to 4, characterized in that the at least one further pivot bearing ( 28 . 29 ) in the region of the latching connection ( 5 . 9 ) is formed. Springloaded Umleggriff ( 31 ) according to one of claims 1 to 5, characterized in that the sleeve ( 8th ) in the region of the pivot axis ( 30 ) is arranged. Springloaded Umleggriff ( 31 ) according to one of claims 1 to 6, characterized in that the sleeve ( 8th ) partially out of the opening ( 3 ) of the handle ( 1 protrudes and with its free protruding end a conical surface ( 14 ) which forms with a corresponding conical recess ( 19 ) in the attachment ( 16 ) can interact in a clamping manner. Springloaded Umleggriff ( 31 ) according to claim 7, characterized in that the attachment ( 16 ) has a correspondingly shaped surface on which the sleeve ( 8th ) with its front side ( 15 ) during pivoting, loaded by the spring ( 11 ). Springloaded Umleggriff ( 31 ) according to one of claims 1 to 8, characterized in that the pivot bearing ( 27 - 29 ) Rolling and / or sliding bearings are. Springloaded Umleggriff ( 31 ) according to one of claims 1 to 9, characterized in that the handpiece to the attachment ( 16 ) is pivotable about 90 °. Springloaded Umleggriff ( 31 ) according to one of claims 1 to 10, characterized in that the handpiece to the attachment ( 16 ) is detectable.