DE102007054499A1 - Lock formed on a pair of pliers - Google Patents

Abstract

The invention relates to a lock (V) formed on a pair of pliers (1) with two pliers arms (2, 3), wherein the pliers legs (2, 3) are locked by means of applied gripping sleeves (15, 16), to which a handle cover (15) a movable locking part (18) and on the other handle cover (16) a rear handle part (19) is formed, wherein the locking part (18) and / or the rear handle part (19) as of the handle cover (15, 16) is made separate part. In order to improve a locking of the type in question at handling technically favorable embodiment, it is proposed that the locking member (18) and / or the rear handle portion (19) in the use state in the handle cover (15, 16) is included such that it is from a Pliers legs (2, 3) is interspersed.

Description

The The invention relates firstly to a pair of pliers Pliers legs formed locking, with the pliers legs are locked by means of applied grips, including on a handle cover a movable locking part and on the other handle cover a rear grip part is formed, wherein the locking part and / or the rear grip part as from the handle cover is made separate part.

A lock for pliers legs of a pair of pliers of the type in question is from the DE 10 2005 008 328 A1 known. There, a pair of pliers is described with gripping sleeves applied to pliers legs, which furthermore has a locking part in the form of a slider which can be displaced linearly on the gripping sleeve, which cooperates with a rear gripping part formed on the gripping sleeve surrounding the opposite pliers limb.

in the With regard to the known prior art is a technical Problem of the invention seen therein, a lock of in Speech type with handling technically favorable design improves training.

These The problem is first and foremost through the The subject matter of claim 1 is solved, with a focus on it is that the locking part and / or the rear grip part in State of use is included in the handle cover such that it is interspersed by a pliers leg. Follow this Design is a functionally reliable locking of the pliers legs given, so preferably in the pliers closing position. according to the penetration of locking part and / or rear part by preferably made of a solid metal material, in particular tool steel, existing pliers legs is the locking part and / or the Rear grip part given a high stability. The assertive Pliers legs can continue this configuration at the same time the definition of locking part and / or rear grip part on the pliers legs, assigned to serve the handle cover. Any, especially in the locked position on the locking part and / or the rear part engaging forces, so on in particular tensile forces are on the locking part and / or the rear part of the grip directly into the massive pliers leg initiated.

Further Features of the invention are below, also in the figure description, often in their preferred association with the subject-matter of the claim 1 or explained features of further claims. But they can also be in an assignment to only individual Features of claim 1 or the respective further claim or each independently.

So in a preferred embodiment, the locking part and / or the rear grip part made of a hard plastic, more preferably in the form of a plastic injection molded part. This is further preferred Design as the handle cover steckzuordbares item manufactured, further comprising a frame-like section, the is penetrated by the associated pliers legs. The the locking part and / or the rear handle part in the state of use incorporating handle cover is at least partially made of a soft plastic. It can also do this within the handle cover Zones of different plastic hardnesses may be provided. So can continue the immediate grip of the case with one opposite the other zones of the handle cover softened softened plastic. Anyway in this regard, further preferred that the plastic larger Hardness of the handle cover is set softer than the plastic material of the locking part and the rear handle part.

In a development of the subject invention is provided that the rear grip part and / or the locking part a support receptacle for having a force acting between the forceps arms compression spring. Accordingly, this preferably consists of a hard plastic Locking part or the rear handle part a stable base for Support of the forceps legs preferably in a forceps opening position loading spring. About the hard-set locking and / or Rear grip part acts directly on the force of the compression spring the locking or rear part passing through massive Pliers legs.

When In terms of handling technology, an embodiment proves to be in which the locking part is formed as a rotational locking part is. This is from a locking position into an unlocked position and vice versa preferably via thumb operation pivotable. For this purpose, a further axis of rotation of the rotary locking part aligned perpendicular to an opening plane of the pliers legs. This provides an ergonomically favorable handling of the locking part with the hand holding the pliers at the same time. Accordingly, a one-hand operation allows for locking and unlocking the pliers. The rotary locking member moves in the course of pivotal displacement within the plane defined by the forceps legs plane or Family of planes.

The invention further relates to a formed on a pair of pliers arms with two pliers locking, wherein a pliers leg possibly has a handle cover, wherein further vorgese on a pliers leg a movable locking part and on the other pliers leg a rear handle part hen is and, moreover, the locking member is to be operated by rotation.

locks the type in question are known. These serve to determine the pliers legs of a pair of pliers, especially in the pliers closing position.

in the With regard to the known prior art is a technical Problem of the invention seen therein, a lock of in Speech type with handling technically favorable design improves training.

These The problem is first and foremost through the The subject matter of claim 7 solved, where it turned off is that perpendicular to an opening plane of the pliers legs extending axis of rotation of the locking part passing through in one is provided by the forceps leg projecting socket. Corresponding does not affect the axis of rotation of the locking part directly the cross section of the pliers leg or the cross section of an optionally the pliers leg comprehensive handle cover. Rather, it is the axis of rotation outside the actuation or Operating range of the pliers arranged.

Further Features of the invention are below, also in the figure description, often in their preferred association with the subject-matter of the claim 7 or explained to features of further claims. But they can also be in an assignment to only individual Features of claim 7 or the respective further claim or each independently.

In a preferred embodiment of the subject invention extends the locking part in the closed as well as in the open state the pliers within the pliers legs or in between the Pliers legs left open space. This allows a favorable handling. The Griffergonomie of possibly with handle covers provided pliers legs is still güns tiger, as the locking part is arranged outside the immediate grip area.

Also proves to be favorable when the locking part the pliers legs perpendicular to the opening plane of the pliers legs practically not towered over. The through the perpendicular to the opening plane The forceps pliers measured height of the forceps is according to the proposed arrangement of the locking member practically not exceeded. The Pliers, according to this, may continue to be spatially confined Areas attached and operated. With "practical not exceeded "is an embodiment within the meaning of the invention to understand in which the functional portion of the locking part perpendicular to the opening plane of the forceps legs this does not dominate. Only one of the improved handling for operation the locking member provided actuating projection or the like, for example in the form of a lens-like thickening, can tower over a pliers leg in height, but this only by a measure, which is about one twentieth to one fiftieth of the perpendicular to the opening plane corresponds to the pliers leg measured pliers leg height, so on, for example, with a measure of 1 to 2 mm.

Prefers will continue that the locking part to open in the direction to move on the forceps jaw. This is a compact design given the provided with the locking pliers.

These compact design is further achieved in that the locking part at least partially overlapping to one between the Pliers legs arranged compression spring is, so on, in particular in a projection onto the opening plane of the pliers legs, further possibly also in a projection on a perpendicular to the opening plane aligned, the pliers leg cutting plane.

Also It is proposed that the compression spring in each case seen in the direction of the forceps leg outside beyond the axis of rotation of the locking part and / or the rear handle this is further preferred both in the closure as well as in the opening state of the pliers. Corresponding is a distance of the support surfaces of the compression spring always larger than the one measured in the same direction Distance from locking part rotation axis and rear grip. So can continue the spring support directly or indirectly on the pliers legs, if necessary with the interposition of a Griffhüllenwandung respectively.

After all We proposed that the locking part be a total circular Floor plan has. So can continue the locking part with a aligned parallel to the opening plane of the pliers legs, circular disk-shaped actuating surface be provided. Alternatively, the actuating surface also have a shape deviating from a circular shape.

The Features of independent claims 1 and 7 are possibly in conjunction with the characteristics of the other dependent Claims, also in combination essential.

below the invention with reference to the accompanying drawings, which only one embodiment represents, closer explained. It shows:

1 a pair of pliers with one out at this formed locking device according to the invention in a perspective view, concerning the closure position;

2 the pliers in plan view;

3 the pliers in a side view;

4 a partial sectional view along the section line IV-IV in 3 ;

5 the enlargement of the area V in 4 ;

6 the section according to the line VI-VI in 5 ;

7 the section according to the line VII-VII in 3 ;

8th an exploded perspective view of the pliers;

9 one of the 4 corresponding, partially sectioned illustration, but concerning the opening state of the pliers;

10 the enlarged area X in 9 ;

11 one of the 7 corresponding representation, but the state according to 9 and 10 concerning.

The proposed locking is based on an example pliers shown in the illustrations 1 described in the form of a center cutter.

The center cutter shown has two pliers legs 2 . 3 , which cross each other in the trade area in each case a cutting jaw 4 . 5 continue. The cutting jaws 4 and 5 limit a forceps jaw M. in a forceps opening position.

Each pliers leg 2 . 3 is on a special bearing bolt 6 . 7 rotatably mounted. These bearing bolts 6 respectively. 7 extend on both sides of a longitudinal axis of symmetry x of the center cutter. They pass through a common transverse plane EE to the planes symmetry axis x and run transversely to a cutting jaw pivoting plane.

The bearing bolts 6 . 7 enforce cross-sectional through holes of two tabs 8th , These paired, in the pivoting plane of the cutting jaws 4 . 5 or pliers legs 2 . 3 extending, plate-like tabs 8th between them the transition area between the cutting jaws 4 . 5 and the pliers legs 2 . 3 , The essentially long rectangular cut tabs 8th extend with their longer side in the direction of the transverse plane EE.

In the area of the mutually facing cutting edges 9 . 10 the cutting jaws 4 . 5 have the tabs 8th a rounded niche 11 on. The latter has a centering effect on the object to be cut, such as wire.

The handle side behind the tabs 8th subsequent, cranked crossing region K of the gripping arms 2 . 3 is significantly widened compared to the handle and back zone, this in the interest of large-area guide surfaces 12 ,

Immediately behind the crossing region K form the grip legs 2 . 3 against each other directed stop spurs 13 from which the closed position of the cutting edges 9 . 10 define.

The grip legs 2 . 3 are further spaced apart so that approximately in their space 14 protruding fingers are not pinched.

On the weakly longitudinally corrugated pliers legs 2 . 3 each is a handle cover 15 . 16 applied. These are plastic grips, more particularly consisting of a soft plastic such as PVC.

The two grips 15 and 16 are edge-rounded and designed to be pleasant to the touch, taking into account the ergonomic conditions of a human operator's hand.

They follow the contour of the wavy course of the pliers legs 2 . 3 , The latter provide the stabilizing core of the thus created pliers handles.

In the illustrated embodiment, the handle covers 15 . 16 manufactured in two-component injection molding, in part from a soft plastic and partly from a harder compared to the plastic.

The hard and thus also different in effect Materials appear distributed over the surface and form contiguous fields or zones.

in this connection takes the softer plastic in terms of area the overwhelming part of the handle outside.

The cutting jaws 4 and 5 are by means of a compression spring 17 loaded in the forceps jaw opening position. This pressure spring 17 extends below the crossing region K, further below the stop spurs 13 , the gap 14 transversely, in each case under end load on the facing surfaces of the pliers legs 2 and 3 ,

To the pliers in the example in the 1 and 2 illustrated closure position against the action of the compression spring 17 to hold, a lock V is provided. This causes a determination of the pliers legs 2 and 3 in the forceps closure position.

The lock V is composed essentially of a pliers leg 2 associated locking part 18 and one the other pliers leg 3 associated rear handle part 19 , locking member 18 and rear grip part 19 are on the cutting jaws 4 and 5 opposite side of the crossing region K below the stop spurs 13 arranged.

Both the locking part 18 as well as the rear grip part 19 first have a socket 20 . 21 which is formed as a hard plastic part, in particular as a hard plastic injection molded part. Both pedestals form a frame 22 . 23 , with a frame opening 24 , which is cross-sectionally adapted to the cross section of the pliers legs 2 respectively. 3 in the crossover section covering the handle cover 15 . 16 ,

The handle covers 15 . 16 show the gap 14 facing window-like openings 25 . 26 on, for form-adapted enforcement of the socket-side frame 22 respectively. 23 of locking part 18 or rear part 19 ,

In the position of use, each pedestal engages accordingly 20 . 21 in the tubular handle cover 15 . 16 one, with the respective frame 22 . 23 of the pedestal 20 . 21 is penetrated by the associated pliers legs 2 . 3 , About this pliers leg 2 . 3 is the locking part 18 or the rear grip part 19 established. A support in the longitudinal extension of the pliers legs 2 . 3 and perpendicular to an opening plane of the pliers legs 2 . 3 is supported by the edges of the window-like openings 25 . 26 given.

The one about the gap 14 facing surface of the handle cover 16 out into the gap 14 protruding section of the base 21 forms the formation of the rear part of the grip 19 a directed in the direction of the crossing region K latching shoulder 27 out. This is the associated inner surface of the handle cover 16 spaced. The opposite pliers legs 2 facing surface of the locking shoulder 27 is rounded in such a way that the latching shoulder 27 starting from the pedestal 21 towards the gap 14 facing inner surface of the handle cover 16 rejuvenated. This curve surface is with 28 designated.

The transverse to the pivot plane of the pliers legs 2 and 3 measured height of both pedestals 20 and 21 is smaller than the measured in the same direction height of the grip sleeves 15 and 16 included pliers legs 2 and 3 so the pedestals 20 and 21 do not protrude beyond the parallel to the pivot plane aligned pliers legs surfaces.

The pliers leg 2 assigned sockets 20 carries the total of a circular floor plan having locking part 19 , The latter has two spaced apart in the axial direction, circular in plan shape, parallel to the pivot plane of the pliers legs 2 . 3 aligned cover disks 29 , Which over a mantle wall section along the outer contour of the ceiling panes 29 extending wall section 30 connected to each other. This wall section 30 When viewed in the circumferential direction, it forms a rear engagement section in an end region 31 out.

The thus designed locking part 18 is pivotally displaceable on the associated base 20 held, wherein the axis of rotation y perpendicular to the opening or pivoting plane of the pliers legs 2 and 3 is aligned. This axis y passes through the base 20 and thus runs outside the associated pliers limb 2 and the associated handle cover 15 within the between the pliers legs 2 and 3 left gap 14 , Further, the rotation axis y off-center of the circular locking part 18 arranged for eccentric displacement of the same.

The locking part 18 is pivotable between two end positions. These end positions are rest assured, including the inside of the socket 20 flanking ceiling panes 29 in axis alignment projecting Raststummel 32 are formed. These act latching together with two below, the axis of rotation y, ie beyond the crossing region K at the lateral edges of the base 20 trained recesses 33 , Every stopper 32 are two such recesses 33 in the pivoting direction of the locking stub 32 assigned, wherein a latching recess 33 the locking position and a recess 33 the open position of the lock V defined.

The recesses 33 include an angle α of about 35 °. This angle corresponds to the possible pivoting angle of the locking part 18 ,

The base 20 is also for receiving the flanking ceiling panels 29 with conformed depressions 34 provided, whose perpendicular to the pivot plane of the pliers legs 2 and 3 Measured height of the material thickness of the ceiling panes considered in the same direction 29 equivalent. This is how the free surfaces of the ceiling panes extend 29 in a plane with the remaining pedestal areas outside the depressions 34 , bringing the locking part 18 practically not the pliers legs 2 and 3 projecting perpendicular to the opening plane.

The behind grip part side base 21 is assigned to the latching shoulder 27 with identical depressions 34 provided, for flanking encroachment of the ceiling panes 29 in the locked position.

Both sockets 20 and 21 form at the same time support shots 35 for the compression spring 17 out. These support shots 35 are the underside of the locking shoulder 27 or below the axis of rotation y in the sockets 20 and 21 formed, including the latter substantially in the direction of extension of the compression spring 17 looking towards the one-piece with the sockets 20 and 21 trained frame 22 and 23 are hollowed out. The the gap 14 facing frame portion forms a support surface for the compression spring 17 , From this support surface approximately perpendicular starting a pin extends 36 in the gap 14 for engagement in the associated end portion of the compression spring 17 ,

Due to the selected arrangement, the compression spring is supported 17 in the direction of the pliers leg outer sides, in each case beyond the functional parts of the lock V, further beyond the axis of rotation y or the latching shoulder 27 of the rear handle part 19 , Accordingly, there is always the clear width between the support receptacles 35 for the compression spring 17 larger than the clear width between the rear grip part 19 and the locking part 18 or between the locking shoulder 27 and the lock-part-side engagement portion 31 ,

Furthermore, there are both locking part 18 as well as behind grip part 19 in a projection on a perpendicular to the pivot plane and the pliers legs 2 and 3 intersecting plane at least partially overlapping the compression spring 17 , This training in the lock V in the intermediate space between the compression spring 17 and crossing area K.

A convenient handling for the displacement of the locking part 18 is by arranging a lentil-like elevation 37 on the free surfaces of the ceiling panes 29 given. This survey 37 is easy by means of the thumb of the pliers 1 leading hand reachable.

In the locking position according to the representations in the 1 to 7 engages the Hintergreifabschnitt 31 of the locking part 18 behind the latching shoulder 37 of the rear handle part 19 , The pressure spring which continues to act in this direction in the spreading direction 17 loads the rear handle position in a favorable manner, so that it can be lifted only intentionally. This is done by pivoting the locking part 18 around the axis of rotation y, so in the illustrations in the clockwise direction by the degree of the above-described angle α. Here, the locking member pivots 18 due to the eccentric arrangement of the axis of rotation y in the direction of the crossing region K in the between the sockets 20 and 21 and the intersection area K remaining gap portion. Also, this unlocking position is, as mentioned, rest assured.

The at the latching shoulder 27 shaped, the locking part 18 facing cam surface 28 causes a positively controlled swinging out of the locking part 18 if this is to be displaced back in the forceps opening position in the actual locking position. This forced control is carried out by striking the locking part side rear gripping portion 31 on the curved surface 28 , Thus, a malfunction is counteracted. The pliers can also with a possible incorrect operation of the locking part 18 be moved to the fully closed forceps jaw position.

In the locking position, the locking part extends 18 in the middle between the pliers' thighs 2 and 3 , The longitudinal axis of symmetry x of the pliers 1 cuts the ceiling panes accordingly 29 in the middle, so that in the locking position, a symmetrical image is also established with regard to the lock V.

All disclosed features are essential to the invention (in itself). In the disclosure of the application is hereby also the disclosure content the associated / attached priority documents (Copy of the advance notice) fully included, too for the purpose, features of these documents in claims present Registration with.

1

tongs

2

pliers legs

3

pliers legs

4

cutting jaw

5

cutting jaw

6

bearing bolt

7

bearing bolt

8th

flap

9

cutting edge

10

cutting edge

11

niche

12

guide surface

13

stop spur

14

gap

15

handle cover

16

handle cover

17

compression spring

18

locking member

19

Rear grip part

20

base

21

base

22

frame

23

frame

24

frame opening

25

perforation

26

perforation

27

locking shoulder

28

cam surface

29

ceiling slice

30

wall section

31

Rear grip portion

32

Rest stub

33

recess

34

depression

35

support recording

36

pen

37

survey

e

transverse plane

K

crossing area

M

beaks

V

lock

x

Longitudinal axis of symmetry

y

axis of rotation

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 102005008328 A1 [0002]

Claims (13)

On a pair of pliers ( 1 ) with two pliers legs ( 2 . 3 ) formed locking (V), wherein the pliers legs ( 2 . 3 ) by means of applied grips ( 15 . 16 ) are locked, including on a handle cover ( 15 ) a movable locking part ( 18 ) and on the other handle cover ( 16 ) a rear grip part ( 19 ) is formed, wherein the locking part ( 18 ) and / or the rear grip part ( 19 ) than the handle cover ( 15 . 16 ) separate part, characterized in that the locking part ( 18 ) and / or the rear grip part ( 19 ) in the use state in the handle cover ( 15 . 16 ) is included in such a way that it is supported by a pliers leg ( 2 . 3 ) is interspersed. Pliers according to claim 1 or in particular according thereto, characterized in that the locking part ( 18 ) and / or the rear grip part ( 19 ) consists of a hard plastic. Pliers according to one or more of the preceding claims or in particular according thereto, characterized in that the handle cover ( 15 . 16 ) at least partially made of a soft plastic. Pliers according to one or more of the preceding claims or in particular according thereto, characterized in that the rear grip part ( 19 ) and / or the locking part ( 18 ) a support receptacle ( 35 ) for one between the pliers legs ( 2 . 3 ) acting compression spring ( 17 ) having. Pliers according to one or more of the preceding claims or in particular according thereto, characterized in that the locking part ( 18 ) is designed as a rotary locking part. Pliers according to one or more of the preceding claims or in particular according thereto, characterized in that an axis of rotation (y) of the rotary locking part ( 18 ) perpendicular to an opening plane of the pliers legs ( 2 . 3 ). On a pair of pliers ( 1 ) with two pliers legs ( 2 . 3 ) formed locking (V), wherein a pliers leg ( 2 . 3 ) optionally a handle cover ( 15 . 16 ), wherein further on a pliers leg ( 2 ) a movable locking part ( 18 ) and on the other pliers leg ( 3 ) a rear grip part ( 19 ) is provided and beyond the locking part ( 18 ) is to be actuated by rotation, characterized in that the perpendicular to an opening plane of the pliers legs ( 2 . 3 ) extending axis of rotation (y) of the locking part ( 18 ) passing through in one of the pliers legs ( 2 ) cantilevered base ( 20 ) is provided. Pliers according to claim 7 or in particular according thereto, characterized in that the locking part ( 18 ) in the closed state as well as in the open state within the pliers legs ( 2 . 3 ). Pliers according to one or more of claims 7 to 8 or in particular according thereto, characterized in that the locking part ( 18 ) the pliers legs ( 2 . 3 ) perpendicular to the opening plane of the pliers legs ( 2 . 3 ) practically not surmounted. Pliers according to one or more of claims 7 to 9 or in particular according thereto, characterized in that the locking part ( 18 ) to open in the direction of the forceps jaw (M) is to move. Pliers according to one or more of claims 7 to 10 or in particular according thereto, characterized in that the locking part ( 18 ) at least partially in overlap to one between the pliers legs ( 2 . 3 ) arranged compression spring ( 17 ). Pliers according to one or more of claims 7 to 11 or in particular according thereto, characterized in that the compression spring ( 17 ) in each case in the direction of the outer side of the forceps jaws seen beyond the axis of rotation (y) and / or the rear handle is supported. Pliers according to one or more of claims 7 to 12 or in particular according thereto, characterized in that the locking part ( 18 ) has a total circular floor plan.