DE102023000399A1 - Tool for crimping components - Google Patents

Abstract

Tool for crimping components to produce a force-fitting and form-fitting electrical and mechanical connection of components, which has a base body (1), the legs of which are designed as gripping elements (2) and (3), wherein webs (6) and (7) are hinged to the ends (4) and (5) of the gripping elements (2) and (3), which protrude into the base body (1) at an angle to one another, wherein an insert (9) is arranged at an intersection point (8) of the webs (6) and (7), consisting of a holder (10), a pressing element (11) attached thereto and a counterholder (13) arranged at the apex (12) of the base body (1), and wherein the pressing element (11) can be moved into the counterholder (13) when the gripping elements (2) and (3) are pressed together and presses against the components introduced into a recess (15) of the counterholder (13) in such a way that the pressing element (11) in conjunction with the counterholder (13) presses the components to be connected together with a force.

Description

The invention relates to a tool for producing a force- and form-fitting electrical and mechanical connection by crimping components such as wire end ferrules, contact sockets or special cable lugs onto electrical conductors or connections between cables, ropes, conductors or plugs.

A large number of hand-operated pressing or crimping pliers in different designs are known. The basic structure of the hand-operated pliers tools consists of differently designed pliers heads and two differently designed pliers handles that can be pivoted relative to each other between an open and closed position. EP 0 732 779 A2 a pressing tool for pressing wire end ferrules, contact sockets or cable lugs onto electrical conductors is known, which has pressing jaws arranged in the pliers head part that can be pivoted relative to one another and have a centrally provided pressing opening, which is enclosed by a pivoting lever that drives it and can be brought into and out of the pressing position by a pivoting drive movement caused by a toggle lever operation driven by handle parts, so that the connecting element arranged therein can be pressed and removed from the EN 10 2019 127 047 A1 A crimping tool is known which has a plurality of crimping jaws in the pliers head, each with a crimping surface and an opposite sliding surface. The crimping jaws are each mounted around a pivot axis and connected to an actuating element for applying an insertion movement. In the EP 3 614 507 B1 A pressing or crimping tool is described to improve the ease of use and operating safety by having an additional lever in addition to the fixed and movable hand lever. From the EN 20 2014 100 340 U1 a stripping and crimping pliers with a positive lock for twisting a partially exposed end area of a stranded wire is known, in which a first molded part and a second molded part each protrude into the jaws of the two pliers jaws on one of the two pliers jaws, and a positive lock is provided. Further special embodiments of crimping tools are described in the EN 10 2017 108 910 A1 described, with pliers handles that have an electronic monitoring unit for counting and storing the processing operations and from the EN 10 2019 217 835 A1 A crimping device with a holding form for fixing an electrical conductor during crimping is known and from the EN 10 2009 026 092 A1 a crimping tool with crimping dies.

Based on this prior art, the invention is based on the object of creating a hand-operated tool for crimping components for mechanical manufacturing methods with a high level of vertical integration, which can be produced cost-effectively, is easy to handle and can be used for a variety of other applications.

To solve this problem, the invention proposes a tool for crimping components, which has a base body, the legs of which are designed as handle elements, wherein webs are hinged to the ends of the handle elements, which protrude into the base body at an angle to one another, wherein an insert is arranged at an intersection point of the webs, consisting of a holder, a pressing element attached to it and a counter-holder arranged at the apex of the base body, and wherein the pressing element can be moved into the counter-holder when the handle elements are pressed together and presses against the components introduced into a recess in the counter-holder, such that the pressing element in conjunction with the counter-holder presses the components to be connected together with a force.

Advantageously, the base body of the hand-held tool for crimping components is made in one piece without joints, preferably from a biogenic plastic, which is advantageously compostable and recyclable.

An advantageous embodiment of the tool for crimping components is seen in the fact that, in the case of highly stressed tools, the base body of the tool, which is made of biogenic plastic, is provided with partial reinforcements in highly stressed areas. In particular, a fiber reinforcement, a material mix or a material with a higher strength is provided as partial reinforcement of the base body of the tool.

A further advantageous embodiment of the tool for crimping components is that the insert, consisting of a holder, a pressing element and a counterholder, is designed to be interchangeable for different areas of application and activities, so that the life cycle is extended in terms of sustainability and a composite material which is difficult to recycle is avoided.

Preferably, the holder and the counterholder are fastened in the base body of the crimping tool in a force-fitting manner by means of magnetic elements or in a form-fitting manner by means of locking elements.

In order to generate a translational movement of the pressing element, the pressing element is advantageously provided so as to be longitudinally guideable in a guide in the counterholder.

It is also advantageous that the tool can be used for crimping network plugs, wire end ferrules, cable lugs on electrical conductors, mechanical cable connections, for separating cables and for stripping the sheath of cables by changing the insert. It is also advantageous that the holder, the pressing element and the counterholder are made of material with a higher strength depending on the different areas of application.

The kinematic structure of the tool according to the invention advantageously has no joints to be assembled, but is constructed according to the principle of flexible structures so that the number of components installed and thus the assembly effort is very small. The tool therefore has the great advantage that it is technically simple in construction and inexpensive to manufacture and can be used individually for different areas of application by changing the inserts, which ensures easy handling. Furthermore, no production aids, such as cooling lubricants, are required for the pressing processes.

The invention is explained in more detail below with reference to embodiments shown schematically in drawings.

• 1 eine Gesamtansicht des Werkzeuges zum Crimpen von Bauelementen;
• 2 einen Einsatz zum Crimpen von Netzwerksteckern;
• 3 einen Einsatz zum Crimpen von Aderendhülsen;
• 4 einen Einsatz zum Crimpen von Kabelschuhen an elektrischen Leitungen;
• 5 einen Einsatz für eine W-Crimpverbindung an elektrischen Leitungen;
• 6 einen Einsatz zum Crimpen von mechanischen Seilverbindungen.
• 7 einen Einsatz zum Trennen von Kabeln;
• 8 einen Einsatz zum Abisolieren des Mantels von Leitungen.

They show:

• 1 an overall view of the tool for crimping components;
• 2 an insert for crimping network connectors;
• 3 an insert for crimping wire end ferrules;
• 4 an insert for crimping cable lugs on electrical cables;
• 5 an insert for a W-crimp connection on electrical cables;
• 6 an insert for crimping mechanical rope connections.
• 7 an insert for separating cables;
• 8 an insert for stripping the sheath of cables.

The hand-held tool for crimping components according to the invention can be used to produce a force- and form-fitting, non-detachable electrical or mechanical connection and has a modular structure. The crimping tool consists of 1 from a base body 1, which is advantageously made of a biogenic plastic and can be produced in particular by injection molding, continuous strand extrusion or additive manufacturing. As a result, the base body 1 of the tool can be made from renewable raw materials that are compostable and recyclable. This geometry of the tool allows the number of parts to be minimized. The base body 1 is made in one piece without joints.

The tool for crimping components is operated by manually pressing together the two legs of the base body 1, which are designed as handle elements 2 and 3. The handle elements 2 and 3 have two hinged webs 6 and 7 at their ends 4 and 5, which protrude into the base body 1 at an angle to one another. An insert 9 is arranged at an intersection point 8 of the two webs 6 and 7. The insert 9 is interchangeably connected to the two webs 6 and 7 and the base body 1. The insert 9 is designed differently for different manufacturing processes, in particular for crimping network plugs ( 2 ), for crimping wire end ferrules ( 3 ), for crimping cable lugs on electrical cables ( 4 ), for a crimp connection on electrical cables ( 5 ), for crimping mechanical cable connections ( 6 ), as well as for disconnecting cables ( 7 ) and for stripping the sheath of cables ( 8 ). Because the insert 9 is exchangeable, different activities in different fields of application can be carried out with the crimping tool according to the invention.

The insert 9 is attached to the two webs 6 and 7 and the base body 1 in a force-fitting manner, for example by means of a magnet, or in a form-fitting manner, for example by means of a catch. The insert 9 consists of a holder 10 to which a pressing element 11 is attached and a counterholder 13 which is arranged at a vertex 12 of the base body 1. The pressing element 11 is guided lengthwise in a guide 14 of the counterholder 13. If the two grip elements 2 and 3 are pressed together to initiate the crimping process, the two webs 6 and 7 move into the base body 1 on the basis of the kinematic arrangement and this results in a translational movement of the holder 10 with the pressing element 11 and the pressing element 11 attached to the holder 10 is moved into the counterholder 13 and, in conjunction with the counterholder 13, presses the components arranged in a recess 15 of the counterholder 13 together with a force (not shown in detail). The holder 10, the pressing element 11 and the counterholder 13 have Depending on the area of application, a material with higher strength is used.

The design of the base body 1 of the crimping tool allows the number of components to be significantly reduced compared to conventional pliers-shaped crimping tools, thus enabling cost-effective production. In the case of highly stressed tools, the base body 1 made of biogenic plastic can be partially reinforced in highly stressed areas, preferably by inserting metal parts or reinforcement with fibers.

The invention is not limited to the embodiments mentioned, but is variable in many ways in the design of the base body and the inserts.

List of reference symbols

1

Base body

2

Handle element

3

Handle element

4

End of the handle element

5

End of the handle element

6

web

7

web

8

Intersection of the bridges

9

Mission

10

holder

11

Press element

12

Vertex

13

Counterholder

14

guide

15

Recess in the counterholder

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions.

Cited patent literature

• EP 0732779 A2 [0002]
• DE 102019127047 A1 [0002]
• EP 3614507 B1 [0002]
• DE 202014100340 U1 [0002]
• DE 102017108910 A1 [0002]
• DE 102019217835 A1 [0002]
• DE 102009026092 A1 [0002]

Claims (9)

Tool for crimping components to produce a force-fitting and form-fitting electrical and mechanical connection of components, such as wire end ferrules, contact sockets or special cable lugs on electrical conductors or connections between cables, cables, conductors or plugs, characterized in that the tool has a base body (1), the legs of which are designed as handle elements (2) and (3), wherein webs (6) and (7) are hinged to the ends (4) and (5) of the handle elements (2) and (3), which protrude into the base body (1) at an angle to one another, wherein an insert (9) is arranged at an intersection point (8) of the webs (6) and (7), consisting of a holder (10), a pressing element (11) attached thereto, a counterholder (13) arranged at the apex (12) of the base body (1), and wherein the pressing element (11) presses into the counterholder (13) when the handle elements (2) and (3) are pressed together. is movable in and presses against the components introduced into a recess (15) of the counterholder (13) such that the pressing element (11) in conjunction with the counterholder (13) presses the components to be connected together with a force. Tool for crimping according to Claim 1 , characterized in that the base body (1) of the hand-held crimping tool is made of plastic in one piece without joints. Tool for crimping according to Claim 1 , characterized in that in the case of highly loaded tools, the base body (1) of the tool made of plastic is provided for the insertion of partial reinforcements in highly loaded areas. Tool for crimping according to Claim 1 , characterized in that the insert (9), consisting of the holder (10), the pressing element (11) and the counterholder (13), is provided in an exchangeable manner. Tool for crimping according to Claim 1 , characterized in that the fastening of the holder (10) and the counterholder (13) in the base body (1) of the tool is provided in a force-fitting manner. Tool for crimping according to Claim 1 , characterized in that the fastening of the holder (10) and the counterholder (13) in the base body (1) of the tool is provided in a form-fitting manner. Tool for crimping according to Claim 1 , characterized in that in order to generate translational movements of the pressing element (11), the pressing element (11) is provided so as to be longitudinally guideable in a guide (14) in the counterholder (13). Tool for crimping according to Claim 1 , characterized in that the holder (10), the pressing element (11) and the counterholder (13) are made of material with a higher strength depending on different areas of application. Tool for crimping according to Claim 1 , characterized in that the crimping tool can be used for crimping network plugs, wire end ferrules, cable lugs on electrical conductors, mechanical cable connections, for separating cables and for stripping the sheath of cables by exchanging the insert (9).