EP1231141A1 - Binding tool, especially for cable bundle - Google Patents

Abstract

The system for fitting a band (9) around a cable harness comprises a clip (2), through which the band is fed as a loop. The band first passes through jaws (7) and a swivelling plate (6) above the band periodically prevents one end (21) of the clip from fastening.

Description

The invention relates to an arrangement for binding an object, especially a wire harness, with a tool, a band and a lock, the band in the form of a Loop is passed through the lock, which has a band passage and locking pawls arranged therein engaging in the band has, the tool a pair of pliers and a tape guide, in a lock holder on one end of the tool opens, and has a movable cover tongue, which is temporarily at least one of the latches engaging in the Band prevents.

An arrangement of this type is known from US Patent 4,908,911. There is in particular a tool for binding one described by a band held by a lock. The tool has a tool housing, at the front end of one Pliers is arranged. There is a tape guide in the tool housing, along the the tape from a magazine through the case is pushed towards and through the pliers, as well as a Lock channel provided through which the locks become one Lock bracket are performed. The lock bracket is on the pliers-side mouth of the tape guide arranged. Operational becomes a lock over the lock channel in the lock holder then the tape is removed from the tape guide the lock is pushed into the pliers in the lock holder and looped around the object to be bound. The free end of the tape is then put back into the lock Tool guided to tighten the tape. The strap loop is kept tense by the castle and can Cut the tape from the tool. In order to loosening of the strap loop from the lock can be prevented can, it has latches to hold the tape. In order to the tape but unimpeded by the Castle can run, a cover tongue is provided, which in the area between the belt and the latch can be inserted can to engage the latches of the lock in a Serration of the tape and thus an inhibition of the tape feed prevent. The cover tongue is longitudinally displaceable by means of guided by a carriage and has a wedge at its tip to lift one of the latches off the belt and to prevent it from engaging in its teeth. The well-known However, arrangement is disadvantageous in terms of reliability and versatility. The tool is sensitive to it Deviations in the position of the lock or the latch relative to the cover tongue. Because the castle is deviating from its ideal position so it can happen that the cover tongue is not included when it is inserted into the lock grips his chisel tip under the latch and lifts it with it, but runs head-on against the pawl while doing so either blocked or the pawl until it is destroyed damaged. An unwanted downtime of the tool is the consequence. The same problem occurs if with different locks for different strip thicknesses differently arranged latches can be used should. The tool then has to be laboriously attached to the each used lock with its arrangement of the latches be adjusted to avoid interference.

The invention has for its object the reliability and increase variability of such an arrangement.

The solution according to the invention consists in an arrangement with the features of claim 1. Advantageous further developments result from the subclaims.

According to the invention, in an arrangement for binding an object, especially a wire harness, with a tool, a band and a lock, the band in the form of a Loop is passed through the lock, which has a band passage and locking pawls arranged therein engaging in the band has, the tool a pair of pliers and a tape guide, in a lock holder on one end of the tool opens, and has a movable cover tongue, which is temporarily at least one of the latches engaging in the Band prevents provided that the cover tongue is pivotally mounted is.

The pivotable mounting according to the invention gives the cover tongue an additional degree of freedom that is an adjustment to different positions of the pawls at different Locks. The cover tongue can be inserted be so far deflected in the castle that with all locks to be expected together with their latches a safe one Underneath the latch can be done. So that is even with inevitably deviating positions of the Latches within the same type of lock ensure a secure grip the latches guaranteed. The swiveling storage the cover tongue allows the cover tongue when Introducing into the castle no direct contact with the Latch needs to have; rather, it can be done with a safety margin be brought to the latches.

The cover tongue is preferably pivotable about an axis, which is perpendicular to a tape guide direction. That has the advantage that the pivot axis of the cover tongue is approximately parallel to the axis or axes around which the latch is located or move the latches of the lock; usually lies the axis of the pawl, more precisely that of the instantaneous turning pole, around which the pawl also moves perpendicular to the tape feed direction. The tracks on which the cover tongue on the one hand and the latch on the other move, then lie in one plane. That enables one harmonious course when lifting the latch by the Covering tongue.

The pivot axis of the cover tongue is preferably arranged such that that there is a path of movement of the cover tongue under one cuts an acute angle with a movement path of the latch.

It is expedient for the system to rest against the latch Lock certain surface of the cover tongue formed fluted. This has the advantage that on the one hand easy insertion the tongue in the area under the latch is made possible and on the other hand also when lifting the Pawl resulting relative movements between pawl and cover tongue, especially towards each other, well received can be.

The pivoting of the cover tongue can be active or passive become. When active, a separate drive is expedient provided for the cover tongue. Passive is expedient the cover tongue arranged so that it is swung out protrudes the area provided at the lock for the tape passage. When the tape comes out of the tool body through the lock is pushed towards the pliers, it hits the cover tongue and pushes them out of the tape guide area, causing pivoting of the cover tongue is effected.

The cover tongue is preferably longitudinally displaceable between one advanced into the lock bracket and one withdrawn position arranged therefrom. By a Combination of the pivoting movement according to the invention with the Longitudinal movement can improve the actuation of the cover tongue and be simplified. In particular, pulling it out the cover tongue by simply moving it longitudinally. Here, longitudinal displacement is not just a linear movement understood, but it can be any z. B. circular movement with sufficient longitudinal component act. It is particularly advantageous to add the cover tongue to be arranged on an eccentric. This is the easiest way enables both a swivel and a longitudinal movement.

An actuating device for the covering tongue is expedient is provided, which is controlled so that the cover tongue advanced with closed pliers and with open Pliers is withdrawn. So that the cover tongue on effort-saving way associated with the operation of the pliers be, if necessary by means of the eccentric.

Fig. 1

eine Seitenansicht einer Anordnung gemäß einem ersten Ausführungsbeispiel der Erfindung im Teilschnitt;

Fig. 2

eine vergrößerte Ansicht eines Teils der Fig. 1 mit Abdeckzunge in ausgeschwenkter Position;

Fig. 3

eine Fig. 2 entsprechende Ansicht mit teilweise eingeschwenkter Abdeckzunge;

Fig. 4

eine Fig. 2 entsprechende Ansicht mit vollständig eingeschwenkter Abdeckzunge;

Fig. 5

eine vergrößerte Ansicht eines Teils entsprechend Fig. 3 bei einer Anordnung gemäß einem zweiten Ausführungsbeispiel der Erfindung; und

Fig. 6

eine Aufsicht auf die Abdeckzunge gemäß Fig. 5.

The invention is explained below with reference to the drawing, in which advantageous embodiments of the invention are shown. Show it:

Fig. 1

a side view of an arrangement according to a first embodiment of the invention in partial section;

Fig. 2

an enlarged view of part of Figure 1 with the tongue in the pivoted position.

Fig. 3

a view corresponding to FIG. 2 with the cover tongue partially pivoted in;

Fig. 4

a view corresponding to FIG. 2 with the cover tongue fully pivoted in;

Fig. 5

an enlarged view of a part corresponding to Figure 3 in an arrangement according to a second embodiment of the invention. and

Fig. 6

5 shows a top view of the cover tongue according to FIG. 5.

The arrangement according to the invention consists of a tool 1, a volume 9 and at least one lock 2. By means of Tool 1 is the band 9 around an object to be bound, For example, a bundle of cables 99 routed in a loop and the respective ends of the strap loop are held by the lock 2.

The tool 1 has an elongated tool body 11, on which a pistol-like handle 12 with an operating switch 14 is arranged. In a back area of the tool 1 is a tape magazine on the tool body 11 13 attached. The tape magazine 13 does not necessarily need immediate to be arranged on the tool body 11 can also be arranged separately from this, in which case the The strip material is fed via a connecting line; such an embodiment is particularly suitable for Major magazines. The tool body 11 has in its interior a tape guide 7, of which a front end in the Part of section shown in FIG. 1 can be seen is. Likewise within the tool body 11 or outside is located in a separate large magazine (not shown) a stock of locks 2 that have a Lock channel one at the front end of the tool body 11 arranged lock bracket 5 are supplied. The lock bracket 5 has a cavity 51 for receiving one of the Locks 2 open. The tape guide 7 inside the tool body 11 opens on the tool side of the lock holder 5 approximately the center of the receiving space 51, with the mouth of the Band guide 7 aligns the band guide groove 41 of the pliers 4 followed. On the lock bracket 5 is also on the tool side a cutting blade 8 is arranged for severing the tape 9.

An enlarged and more accurate view of the area of the Tool 1 around the lock holder 5, the tape guide 7 and the cover tongue 6 is shown in Fig. 2. Is shown a configuration at the beginning of a binding process. Volume 9 is guided in the tape guide 7. Its front end 91 is in the as a result of a previous disconnection Blade 8 area.

The cover tongue 6 is arranged above the band guide 7. It is connected to a slide 64 via a pivot bearing 63, which is guided in a guide 65 in a longitudinally displaceable manner is. The band tongue lies in the area of its tip 61 on the front band end 91, in such a way that they with their Bottom 66 touches the front end of the tape. On their top has the covering tongue 6 in the region of its tip 61 Groove 67 on. The cover tongue is in Fig. 2 in their presented advanced position in which they with their Tip 61 protrudes into the lock receiving space 51. At the She pans around on a dashed line Line 62 shown path.

In the receiving space 51 of the lock bracket 5 is located the lock 2. It has a band passage 23 in its center on. There are two opposite each other in the passage Latches 21 arranged. The latches 21 are with the Lock 2 connected to the lock side, on the look for a Binding the strap loop is located. The latches 21 extend from the strap loop side of the lock 2 groundbreaking into the band passage 23. They point to theirs outer end each have two locking lugs 24, each of which the other locking surface 24 facing surface of the latch 21 are arranged parallel to each other. The latches 24 are for engagement in a toothing (not shown) one of the outer sides 92 of the band 9 is formed. The light one Width between the pawls 21 is such that it is greater than the simple thickness of the band 9, but smaller than twice the thickness of the tape 9; the lower limit is not, however, the clear width can also be smaller be as the thickness of the tape 9. The outer of the locking teeth 24 moves with deflected ratchet teeth 21 approximately on one represented by a dotted line 22.

The arrangement is operated as follows: At the beginning of a binding process a lock 2 in the receiving space 51 of the Lock bracket 5 supplied. From a previous binding there is still the tape 9 in the tape guide 7, the band end 91 is in the area of the blade 8. The cover tongue 6 is in its advanced and swung out Position. Depending on the thickness of the tape 9 the swiveled-out position is not completely reached. This state is shown in Fig. 2.

The actual binding process begins and the pliers 4 around the harness 9 to be bound is closed. Known per se The belt 9 is moved over the belt guide 7 in the feed direction 71 moves. The front end of the tape 91 occurs through the band passage 23 of the lock 2 and enters aligned in the band guide groove 41 of the pliers 4. there steers the band 9 with its outer side 92, which is at the rear 66 of the cover tongue 6 rests, the cover tongue, so that it is pivoted (upwards in the illustration) into its partially swiveled position. It takes hold of the Cover tongue 6 with its tip 61, the upper latch 21, the groove 67 the outer locking tooth 24 of the locking pawl comes to the plant and covers him. The pawl 21 will thereby spreading something away from the band 9 and thus an intervention the ratchet teeth 24 into the teeth on the rear 92 of the band 9 prevented. The covering tongue 6 only covers the outer of the two locking teeth 24, but this is sufficient to engage both locking teeth 24 in the teeth of the Prevent bands 9. This state is shown in Fig. 3.

When the belt 9 moves in the feed direction 71 has passed through the pliers 4, it occurs from the pliers side again in the band passage 23 of the lock 2 with its outer End of tape 91 ahead. The outer band end 91 runs parallel, but in the opposite direction to that Feed direction 71 of the remaining tape 9. When the tape end 91 enters the area of the latches 21 both latches 24 spread, since in the unexpanded state the clear width is not sufficient for the thickness of two bands is. The back 92 of the band 9 comes along the ratchet teeth 24 of the lower pawl 21 'in contact, d. H. the locking teeth 24 engage in the toothing on the Back 92 is provided. Usually that doesn't bother because in this direction, which is also called the clamping direction movement of the band tip 91 from the latch 21 ' is not inhibited (but probably in the opposite direction). The other, moving in the feed direction Part of the band 9 would engage the locking teeth 24 in however, the teeth on the outside 92 inhibit the movement. However, the cover tongue prevents with its tip 61 between the outer locking teeth 24 and the back 92 of the Band lies, an engagement of the locking teeth 24 in the teeth on the back 92. The movement of the belt is therefore from the pawl 21 is not inhibited. This state is in FIG. 4 shown.

Since, thanks to the tongue 6, engagement of the locking teeth 24 in the teeth of the back 92 is prevented, the band 9th be pushed further until finally the band tip 4 dashed position reached at which it rests on the blade 8. The blade 8 acts as a stop for the tape tip 91. This is the feed movement of volume 9 ended. The cover tongue 6 can be out of the range pulled out between the belt 9 and the latch 21. This engages the pawl 21 in the rear 92 provided toothing of the band 9 and prevents another Movement of the band 9 towards the pliers. After tensioning the tape 9 is then cut by means of the blade 8. Thanks to the latches 21 of the lock 2, the receive loop 93 formed from band 9 around cable bundle 99, there is a movement of the tape leading to the release Loops prevented by the latches 21 of the lock 2 becomes.

As best seen in Fig. 2, the intersect Path 22 of the pawl 21 when spreading and the movement path 62 of the cover tongue 6 at an acute angle. The angle is about 25 ° in the example shown. However it is not absolutely necessary for the angle to be so acute, preferably however, it is less than 60 °, more preferably less than 45 °, more preferably less than 20 °. This acute angle ensures that the tip 61 of the cover tongue 6 not during its pivoting movement or only moves relatively little to the latch 21. Such one Moving would be disadvantageous because of the occurring Horizontal movement between cover tongue 6 and latch 24 the locking lug would be ground down in an uncontrolled manner, which would degrade connection security.

In the illustrated embodiment, the cover tongue 6 only provided on one side and only affects the Latch 21 on which the belt 9 during its feed movement abuts with its toothed side 92. It goes without saying that more than one cover tongue 6 can also be provided, to cover further latches.

In the embodiment shown in Fig. 5 is the Cover tongue 6 'pivotally arranged below the belt 9. The cover tongue has an opening 68 'in its central region. through which the tape 9 is guided. On the stock side and At the tip end of the opening 68 'there are bevels 69 'provided. The tip 61 'of the cover tongue moves when swiveling on the dashed line 62 ' illustrated path. In the receiving space 51 of the tool a castle 2 'added, the dimensions of which the Castle 2 differ. So his latches are 21 '', 21 '' ' less voluminous than the latches 21, 21 'of the lock 2. An outer locking tooth 24 '' of the locking pawl 21 '' moves when spreading along one with a dotted line 22 ' illustrated path.

In the state shown in FIG. 5, this extends Band 9 through the opening 68 'of the cover tongue 6' from the tool body 1 to pliers 4 and the tip 61 'of the cover tongue fits just under the outer locking tooth 24 "of the pawl 21 ''. The cover tongue 6 'lies with its tip-side Bevel 69 'on the toothed side 92 of the tape. As a result, the belt 9 pivots with its toothed side 92 Cover tongue so far that the locking teeth 24 '' of the locking pawl 21 '' are lifted off the belt 9. The tape 9 can be free walk through the castle 2 '. When the tape tip re-enters 91 after loop formation, it will move in the feed direction moving part of the belt 9 up to the Latch 21 '' pushed. It caused another one Swiveling the cover tongue 6 ', the locking tooth of which 24 '' bordering tip 61 'the latch 21' 'of the Volume 9 lifts so that engagement of the ratchet teeth 24 "in the tape 9 is prevented. The band 9 can therefore be advanced until it reaches its end position with the tip 91 has reached against the blade 8. So finally the Cover tongue 6 'releases the latch 21' 'and thus engages and holding the band 9 in the lock 2 ', the cover tongue 6 'continues upward along its path 62 'pivoted until it moves from the one moving on its track 22' Detent pawl 21 '' is so far away that the detent pawl 21 '' comes free, snaps back towards band 9 and with their ratchet teeth in the toothed side 92 engages so as to move the belt 9 in direction 71 prevent. In this embodiment, it is not necessary that the cover tongue 6 'is mounted for longitudinal displacement is.

Claims (8)

Arrangement for binding an object, in particular a wire harness, with a tool (1), a band (9) and a lock (2), the band (9) being guided through the lock (2) in the form of a loop (93) , Which has a band passage (23) and arranged in the band (9) engaging detents (21), the tool (1) a pair of pliers (4) and a band guide (7) which in a lock holder (5) on a Front of the tool (1) opens out, and has a movable cover tongue (6), which temporarily prevents at least one of the latches (21) from engaging in the band (9), characterized in that the cover tongue (6) is pivotally mounted. Arrangement according to claim 1, characterized in that the cover tongue (6) can be pivoted about an axis (63) which is perpendicular to a tape guide direction (71). Arrangement according to claim 1 or 2, characterized in that the pivot axis (63) of the cover tongue (6) is arranged such that a path of movement (62) of the cover tongue (6) at an acute angle a path of movement (22) of the latch (21) cuts. Arrangement according to one of claims 1 to 3, characterized in that the cover tongue (6) projects into the band passage (23) of the lock (2) in its pivoted-out position. Arrangement according to one of claims 1 to 3, characterized in that the cover tongue (6) is guided so as to be longitudinally displaceable in a guide (62). Arrangement according to one of claims 1 to 5, characterized in that the cover tongue (6) is arranged on an eccentric. Arrangement according to one of claims 1 to 6, characterized in that an actuating device for the cover tongue (6) is provided which is controlled in such a way that the cover tongue (6) is advanced when the pliers (4) are closed and retracted when the pliers (4) are open is. Tool according to one of claims 1 to 7, characterized in that a surface (67) of the cover tongue (6) intended for contact with the latching pawl (21) is formed with a groove.

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