EP2058088B1 - Grip holder for a hand grip - Google Patents

Description

The invention relates to a handle holder for a handle, in particular for a control handle of a portable, hand-held implement according to the preamble of claim 1.

From the US 3,459,269 is a portable, hand-held implement in the form of a harvester known, which is intended for harvesting olives. A drive motor designed as an internal combustion engine drives an eccentric gear, which reciprocates a vibrating rod in the longitudinal direction. The Rüttelstange is on a branch of fruit-bearing tree, z. B. an olive tree and introduced a vibration that leads to the release of the fruit of their stems. The user only has to pick up the shaken fruit. Such implements serve to generate vibrations, which is why the handles attached to the implement are subject to considerable vibrations. By means of specially trained handle holder is therefore trying to decouple in particular the operating handle of the vibrations of the implement. The US 3,459,269 proposes this a handle holder, similar to a parallelogram under Training of joints is determined on the implement. So that holding and guiding forces can be introduced into the working device, the parallelogram guide must be stiffened by means of friction elements, which makes it difficult to decouple the operating handle from the vibrations of the working device.

US-4401167-A discloses a handle holder according to the preamble of claim 1.

The invention has for its object to provide a handle holder for a handle of a portable, handheld implement, which ensures a good vibration isolation and yet allows a precise introduction of executives in the implement.

The object is solved according to the characterizing features of claim 1.

Since the joints are formed by flexible hinges, hardly vibrations are transmitted through the hinge itself. The flexible hinges, which may preferably be formed in the manner of a film hinge of a strip of elastic material, have self-damping properties and yet ensure a precise introduction of executives in the machine.

The joints formed from a strip of elastic material are formed such that the width of the strip of elastic material is formed several times larger than the thickness thereof. Preferably, the strip is about 5 to 30 times wider than its thickness.

The arrangement of the hinge point formed by strips of elastic material is such that the longitudinal axis of the implement is substantially perpendicular to the plane of the strip of elastic material.

It may be appropriate to provide the hinge point with a tear-off. Preferably, the tear-off ensures a reinforcing layer, which is expediently embedded in the elastic material of the flexible hinge.

The one elastic joint forming elastic strip of elastic material connects an end piece of the handle holder with a center piece of the handle holder. On the mutually facing end faces of the end piece of the handle holder and the center piece of the handle holder stop means for limiting the joint movement are provided in a further development of the invention. The slings are expediently on both sides of the flexible hinge and are particularly elastic. In one embodiment of the invention, the stop means are at force-free hinge point substantially without force against each other. The stop means thus ensure a good introduction of managers on the handle holder in the implement, the repercussions of the vibration of the implement are reduced to the handle.

Further features of the invention emerge from the further claims, the description and the drawing, in which embodiments of the invention described in detail below are illustrated.

Fig. 1

in perspektivischer Darstellung ein tragbares, handgeführtes Arbeitsgerät,

Fig. 2

in vergrößerter, perspektivischer Darstellung einen Handgriff mit einem vorderen Griffhalter und einem hinteren Griffhalter,

Fig. 3

eine Darstellung der Anordnung des vorderen und hinteren Griffhalters ohne Handgriff,

Fig. 4

einen Griffhalter mit durch eine Verstärkungseinlage gehaltenen Endstücken und dem Mittelstück,

Fig. 5

einen Griffhalter nach Fig. 4 mit aus einem gemeinsamen Materialblock gebildeten Anschlagmitteln,

Fig. 6

einen Längsschnitt durch den Griffhalter nach Fig. 5,

Fig. 7

eine Seitenansicht des Griffhalters nach Fig. 5,

Fig. 8a

in vergrößerter Darstellung eine Gelenkstelle des Griffhalters nach Fig. 7,

Fig. 8b

in vergrößerter Darstellung eine modifizierte Gelenkstelle des Griffhalters,

Fig. 9

einen Schnitt durch einen Griffhalter anderer Ausführungsform,

Fig. 10

einen Griffhalter nach Fig. 9 in weiterer Ausführungsform,

Fig. 11

einen Griffhalter nach Fig. 9 mit zwischen einem Endstück und dem Mittelstück ausgebildeter einziger Gelenkstelle,

Fig. 12

einen Griffhalter nach Fig. 11 mit zwischen einem Mittelstück und einem Endstück ausgebildeten zwei Gelenkstellen,

Fig. 13

einen Griffhalter mit seinen durch zwei Verstärkungseinlagen gehaltenen Endstücken und Mittelstück,

Fig. 14

einen Griffhalter nach Fig. 13 mit als Seilen ausgebildeter Verstärkungseinlage.

Show it:

Fig. 1

in perspective view of a portable, hand-guided implement,

Fig. 2

in an enlarged, perspective view of a handle with a front handle holder and a rear handle holder,

Fig. 3

a representation of the arrangement of the front and rear handle holder without handle,

Fig. 4

a handle holder with end pieces held by a reinforcing insert and the middle piece,

Fig. 5

a handle holder after Fig. 4 with stop means formed from a common block of material,

Fig. 6

a longitudinal section through the handle holder after Fig. 5 .

Fig. 7

a side view of the handle holder after Fig. 5 .

Fig. 8a

in an enlarged view of a hinge point of the handle holder after Fig. 7 .

Fig. 8b

in an enlarged view a modified joint of the handle holder,

Fig. 9

a section through a handle holder of another embodiment,

Fig. 10

a handle holder after Fig. 9 in a further embodiment,

Fig. 11

a handle holder after Fig. 9 with a single joint formed between an end piece and the middle piece,

Fig. 12

a handle holder after Fig. 11 with two joints formed between a central piece and an end piece,

Fig. 13

a handle holder with its held by two reinforcing inserts end pieces and center piece,

Fig. 14

a handle holder after Fig. 13 with reinforcing insert designed as ropes.

This in Fig. 1 illustrated, hand-held, portable implement 1 is a harvesting device for olives. It consists essentially of an end arranged combustion engine 2, which drives a vibrating rod via an eccentric 3, which is to be inserted into the open terminal end 4 of the working device 1. The Rüttelstange lies in the longitudinal axis 5 of the implement. 1

For holding and guiding the implement two handles 6 and 7 are provided, wherein the front handle 6 is designed as a round handle 8 and is fixed to the housing flange 10 of the implement 1. The rear, laterally arranged handle 7 consists of an operating handle 9, which also has operating elements for the drive motor 2. Thus, in the upper part of the operating handle 9, a throttle lever lock 11 and in the lower part of a throttle lever 12 is mounted. Further, in the region of the front end of the operating handle 9, an actuating element 13 for the short-circuit switch, the choke flap and a starting gas position is provided.

The operating handle 9 is located at a lateral distance from the housing of the eccentric 3 and is set with two handle holders 20, 21 on the implement 1.

As Fig. 2 In an enlarged view, each handle holder 20, 21 consists of a first end piece 22, which is connected to a respective end 14, 15 of the operating handle 9. The second end 24 of the handle holder 20, 21 is fixed with a holding plate 25 on the implement 1. For this purpose, the gear housing 16 has a countersunk recess 17, in which the holding plate 25 is received and fixed by means of screws 23. The front handle holder 20 is connected to the transmission housing 16 between the eccentric 3 and the front handle 6, while the rear handle holder 21 is fixed in a region between the eccentric 3 and the drive motor 2. The longitudinal center axis 26 of a handle holder 20, 21 is at an angle 28 of about 45 ° to the plane 27 of the holding plate 25th

Trained as a harvester, especially olive shaker implement 1 is mounted with a suspension hook 18 in a lifting eye of a carrying strap, which has created a user. By means of the front round handle 8 and the lateral operating handle 9, the implement 1 is operated, guided and held, wherein both handles 6, 7 both longitudinal and transverse forces - relative to the longitudinal axis 5 of the implement - can be applied.

In the Fig. 3 handle holders 20, 21 shown without the operating handle 9 have the same basic construction and essentially consist of the first and second end pieces 22 and 24 and of a rigid middle piece 29. The pieces 22, 24 and 29 are made of a same, preferably hard material, preferably made of plastic and can expediently by means of a reinforcing layer 30 ( Fig. 4 ) are firmly connected to each other. The middle piece 29 is penetrated by the reinforcing layer 30, wherein the reinforcing layer 30 is advantageously fixed in the middle piece 29. The ends 31, 32 of the reinforcing layer 30 are fixed in the end pieces 22, 24 and held captive, so that the reinforcing layer 30 forms a breakaway 33 between the first, upper end piece 22 and the second, lower end piece 24. The reinforcement layer 30 shown in the exemplary embodiment is expediently formed by a fabric and advantageously extends essentially over the entire width B (FIG. Fig. 4 ) of the handle holder 20 and 21, respectively. It may be advantageous to provide, instead of the fabric, individual threads 30 a, which in the same way as the reinforcing layer 30 are fixed and aligned in the direction of the longitudinal axis 26 of the handle holder 20.

On the mutually facing end faces 34, 35, 36 and 37 of the end pieces 22 and 24 and the central piece 29 stop means 40 are provided, as in Fig. 5 are shown. The stop means are arranged on the opposite broad sides 38 of the middle layer 41 or, if provided, the dashed reinforcing layer 30, as can be seen from the longitudinal section of the handle holder in FIG Fig. 6 results. The stop means 40 are made of elastic material, in particular of a block of material of elastic material such as rubber. The elastic material - preferably rubber - is applied to the in Fig. 4 sprayed blank shown, for which purpose this is inserted into a corresponding shape. During spraying of the stop means 40, an arranged reinforcing layer 30 is completely penetrated by the elastic material of the stop means 40, so that the material adheres firmly to a reinforcing layer 30. Rubber is vulcanized onto the reinforcing layer 30. Only with spraying of the stop means 40 made of elastic material of the handle holder gets its necessary rigidity, due to which he is able to transmit in the operating handle 9 carrying or executives on the handle holder 20 and 21 on the implement 1. As the Fig. 5 to 7 show, on both sides of a central position 41 of the stop means 40 are introduced into the material block 42 of elastic material through openings 43 which extend transversely to the longitudinal axis 26 of the handle holder 20, 21. The openings 43 extend approximately parallel to each other on both sides of the central layer 41 and are at a low level Distance to an arranged reinforcing layer 30, which is arranged in the middle layer 41. The reinforcement layer 30 is substantially completely embedded in the elastic material of the stop means 40, whereby flexible hinges 45 are formed between the paired openings, each forming a hinge point 44. The hinge points 44 themselves are thus formed in the manner of a film hinge from lying between the openings 43 strip 46 elastic material. The stiffeners 46 forming the hinges have a width B measured transversely to the longitudinal central axis 26 which is greater, preferably several times greater, than the thickness D of the strips 46. Preferably, a strip 46 is approximately 5 to 30 times wider than its in the plane of the reinforcing layer 30 measured extent transverse to the longitudinal central axis 26 of the handle holder 20, 21. The embedded in the strip 46 of elastic material optional reinforcing layer 30 forms at each hinge point 44 a tear-off 33. The effect and function of the invention is given without reinforcement insert; only the elastic material or the strip 46 carries the implement 1 and is sufficient to transfer introduced into the handle management.

The stop means 40 provided on both sides of a flexible hinge 45 are preferably formed integrally together with the flexible hinge of elastic material. In Fig. 6 the block of material 42 shown on the left is shown with outer beads 55, which lie in the height of the openings 43 and extend approximately parallel to these. Instead of a bead 55 or thickening may also be provided a V-shaped slot, as in the right half in Fig. 6 shown. Preferably the common block of material 42 at the height of the openings 43 expedient slotted at a right angle to the longitudinal central axis 26, preferably separated into the openings 43. The introduced on the outer sides of the material blocks 42 V-shaped slots 47 weaken the block of material 42 at the level of the hinge formed by the flexible hinge 44, so that a tilting movement about the hinge axis 48 in the direction of the double arrow 49 is facilitated.

If the material at the level of the slot 47 or the thickening 55 is cut completely into the opening 43 in the plane 50 ( Fig. 8a, 8b ), pivotal movement about the axis 48 may cause the outer block of material 42 on the interface 50 to lift apart as it is being compressed on the inside in the plane 50 of the interface. The abutment means for the pivoting movement about the hinge axis 48 are thus determined by the material of the material block 42, wherein the stop means 40 bear force-free against each other at a force-free hinge point 44.

The structure of a handle holder 20, 21 can be made of several components made of different materials. As the Fig. 6 . 9 and 10 to 12 show, the end pieces 22, 24 and the middle piece 29 made of hard material, in particular made of a hard plastic. At the end pieces 20, 21 and the middle pieces 29, a material is then cast, which is softer and ensures a secure connection of the material block 42 is preferably made of rubber. Thus, the middle piece 29 is penetrated by a core 60, which consists of a material whose hardness between the outer shell of the middle piece 29 and the rubber of the material block 42 is located.

It may be advantageous to form the stop means 40 in a predeterminable form, such as the Fig. 9 to 12 demonstrate. At the level of the hinge point 44 is on both sides of the flexible strip 46 over the entire width of the handle holder 20 extending, V-shaped groove 51 provided with a trained manner of a groove 52 foot. The opposing groove flanks 53 form an angle 54 of about 30 °. Thereby, a pivoting movement about the hinge axis 48 in both directions by up to 30 ° is possible, before the groove flanks 53 act as a stop means 40 and limit the pivotal movement of the hinge point 44 and the hinge 45. This limit is elastic; after contact of the groove flanks 53, the elastic material of the material block 42 is further compressed, so that a damping is given. A deflection about the hinge axis 48 is therefore possible by more than 30 °, preferably about 35 °.

In the embodiments of the Fig. 9 to 12 In addition, the center piece 29a is formed so as to have an inner material core 60 made of a material that connects the elastic material of the stopper 40 between the center piece 29a and the upper end piece and the middle piece 29a and the lower end piece 24. The core material 60 is compressed by the middle piece 29a in such a way that the core is quasi stiff.

Fig. 10 shows a modified embodiment of a handle holder 20a, in which the holding plate 25 is executed plan and is perpendicular to the reinforcing layer 30. The middle piece 29a has a compressed core 60 of elastic material, so that the middle piece is substantially rigid. The upper end piece 22 is provided for connection to a handle.

The construction of the FIGS. 11 and 12 corresponds to the Fig. 9 , For clarity, in Fig. 11 the joints 44 drawn as a circle. Between a middle piece 29a and an end piece 22 and 24 is in the embodiment according to Fig. 11 each formed a hinge point 44. It may be expedient to form two hinge points 44 between a middle piece and an end piece, as shown in FIG Fig. 12 is shown schematically.

In the embodiment according to Fig. 13 are the end pieces 22 and 24 connected by at least one fabric tape 70 on which the middle piece 29 is fixed. In the exemplary embodiment shown, two strips 70a and 70b of a fabric strip provided as a reinforcing insert are provided, which extend in each case near the longitudinal edge 71 of the handle holder. The two strips 70a and 70b-preferably woven tapes-lie in a common plane 72 which extends essentially in the middle layer 41 (FIG. Fig. 6 ) of the handle holder 20 extends. The strips 70a and 70b are at a distance v to each other. The joint properties between the end pieces 22 and 24 and the middle piece 29 is determined exclusively by a material block 42 to be cast in, corresponding to that described above Embodiment formed, wherein the strips 70a and 70b act only when destroying the hinge point as a tear-off and otherwise subject to substantially no load.

In the embodiment according to Fig. 14 the tear-off 33 is formed by a plurality of traction cables 77 which extend parallel to each other with a lateral distance b to each other and extend in the longitudinal direction of the longitudinal edge 71 of the handle holder 20. The ropes 77 are in a common plane 78, which - according to the reinforcing layer 30 in Fig. 6 - Is in the middle position 41 of the handle holder 20.

The described handle holder 20 and 21 can advantageously be constructed the same, so that the above statements on the handle holder 20 also apply to the handle holder 21. The optionally indicated reinforcing layer 30 or the anti-tears 33 shown are to be understood as a development of the invention. For the realization of the hinge points 44 according to the invention, an elastic material block 42 is sufficient, which has the openings 43 shown on both sides of a middle layer for forming the hinge points 44. By a material block 42 designed in this way alone, a hinge point 44 between the middle piece and an end piece can be functionally reliable.

Claims (19)

1. Handle with a handle holder on a working implement, in particular operating handle (9) on a portable, hand-guided working implement, wherein the handle (9) is held on the working implement (1) by a front handle holder (20) and a rear handle holder (21) and wherein a first end piece (22) of each handle holder (20, 21) is connected to the handle (7) and a second end piece (24) of each handle holder (20, 21) is connected to the working implement (1) and wherein, between the first and the second end piece (22, 24) of the handle holder (20, 21), at least two articulation points (44) are formed, the articulation axes (48) of which extend transverse to the longitudinal direction of the working implement (1), while the articulation axes (48) of the handle holders (20, 21) are approximately parallel to one another, characterised in that the articulation points (44) are represented by flexible hinges (45), an elastic strip (46) of the articulation point (44) connecting an end piece (22, 24) of the handle holder (20, 21) to a central piece (29) of the handle holder (20, 21).
2. Handle with a handle holder according to claim 1,
   characterised in that an articulation point (44) is formed from a strip (46) of elastic material.
3. Handle with a handle holder according to claim 1 or 2,
   characterised in that an articulation point (44) is designed in the manner of a film hinge.
4. Handle with a handle holder according to any of claims 1 to 3,
   characterised in that the strip (46), transverse to the longitudinal central axis (26) of the handle holder (20, 21), has a size which is a multiple of the thickness (D) of the strip (46).
5. Handle with a handle holder according to any of claims 1 to 4,
   characterised in that the articulation point (44) comprises an anti-tearoff device (33).
6. Handle with a handle holder according to claim 5,
   characterised in that the anti-tearoff device (33) is represented by a reinforcement layer (30).
7. Handle with a handle holder according to any of claims 1 to 6,
   characterised in that the facing end faces (34, 35, 36, 37) of the end pieces (22, 24) of the handle holders (20, 21) and of the central piece (29) of the handle holders (20, 21) support stop means (40) for limiting the articulation movement about the articulation axis (48) of the articulation point (44).
8. Handle with a handle holder according to claim 7,
   characterised in that the stop means (40) are elastic.
9. Handle with a handle holder according to claim 7 or 8,
   characterised in that the stop means (40) contact one another if the articulation point (44) is force-free.
10. Handle with a handle holder according to any of claims 7 to 9,
    characterised in that the articulation point (44) and its stop means (40) are designed as a single part.
11. Handle with a handle holder according to claim 10,
    characterised in that the articulation point (44) and its stop means (40) are formed from a common material block (42) of an elastic material, preferably rubber, and in that through-openings (43) extending at a small distance from the central layer (41) transverse to the longitudinal central axis (26) of the handle holder (20, 21) are provided on both sides of a central layer (41).
12. Handle with a handle holder according to claim 6,
    characterised in that the reinforcement layer (30) passes through the central piece (29) and is fixed in the respective end pieces (20, 21).
13. Handle with a handle holder according to claim 12,
    characterised in that the reinforcement layer (30) is fixed in the central piece (29) as well.
14. Handle with a handle holder according to claim 6,
    characterised in that the reinforcement layer (30) consists of at least one fabric band (70).
15. Handle with a handle holder according to claim 14,
    characterised in that the fabric band (70a, 70b) lies close to the longitudinal edge (71) of the handle holder (21, 22).
16. Handle with a handle holder according to claim 5,
    characterised in that the anti-tearoff device (33) is represented by pull ropes (77), the pull ropes (77) lying next to one another in a common plane (78) at a distance (w).
17. Handle with a handle holder according to any of claims 1 to 16,
    characterised in that two articulation points (44) arranged consecutively in the longitudinal direction of the handle holder (20, 21) are provided between an end piece (22, 24) of the handle holder (20, 21) and the central piece (29).
18. Handle with a handle holder according to any of claims 1 to 17,
    characterised in that the articulation axes (48) of the articulation points (44) of the two handle holders (20, 21) of a handle (7) are approximately parallel to one another.
19. Handle with a handle holder according to claim 18,
    characterised in that the opposite handle holders (20, 21) on the one hand and the handle (7) and the working implement (1) on the other hand form a parallelogram.

Images