DE102019108433A1 - Contact body, contact needle, barrel lock and barrel weapon - Google Patents

Abstract

The invention relates to a contact body 1 for a barrel lock, comprising a housing 10, at least one contact needle 20, a guide body 30 mounted axially movably within the housing 10 for receiving the at least one contact needle 20, the at least one of the contact needles 20 being axially movably mounted within the guide body 30 is, wherein the contact body 1 has rotation means 22, 40 for each contact needle 20, which are designed such that the contact needle 20 rotates relative to the guide body 30 during an axial movement.

Description

The invention relates to a contact body for a barrel lock, comprising a housing, at least one contact needle, a guide body mounted axially movably within the housing for receiving the at least one contact needle, the at least one of the contact needles being axially movably mounted within the guide body.

In the event of an electrical ignition of a propellant charge in a barrel closure of tubular weapons, such as tank cannons, an electrically conductive contact with ammunition, such as a cartridge, must be established. This is usually done with contact needles that are pressed through the wedge plate onto the individual contact of the propellant charge lighter. If the barrel lock is a wedge lock, the wedge moves radially to a barrel axis to open the cargo space. To prevent the contact needles from being destroyed, the contact needles are withdrawn before the barrel lock is opened.

In order to bring the contact needles back into contact with the ammunition after the barrel lock has been closed, contact bodies are used to actuate the contact needles, which are inserted into the locking wedge and actuated via a mechanical linkage during opening and closing in such a way that the contact needles are in front of and be moved back. For this purpose, the contact needles are usually mounted axially movably in the contact body.

The DE 736 564 A discloses a weapon barrel closure with a closure piece in which a contact body for making an ignition contact is formed. Contact is established by pressing a firing pin axially onto a cartridge base.

From the EP 1 199 537 A2 a generic contact body with two contact needles is known, which are axially movably mounted within the contact body. Contact is established by pressing the contact needles vertically onto a cartridge base.

In the known solutions, the contact between the contact needles and the propellant charge igniter in the case base or cartridge base is established exclusively by pressing the contact needles perpendicularly onto the contact.

Contamination, oxidation or corrosion can result in the electrical contact having too high a transition resistance and ignition no longer taking place. Furthermore, existing contact bodies can only be installed with great effort and only with special tools.

Proceeding from this, the invention is based on the object of providing a contact body which produces more reliable contact with a surface to be contacted.

This object is achieved by the features of claim 1. Advantageous refinements and developments are the subject of the respective subclaims.

According to the invention, a contact body for a weapon barrel lock is provided, comprising a housing, at least one contact needle and a guide body mounted axially movably within the housing for receiving the at least one contact needle, the at least one of the contact needles being axially movably mounted within the guide body. The contact body has rotation means for each contact needle which are designed such that the contact needle rotates relative to the guide body during an axial movement.

Furthermore, according to the invention, a contact needle is provided for use in such a contact body or a contact body further developed as described below.

Furthermore, according to the invention, a weapon barrel closure comprising such a contact body or a contact body further developed as described below is provided.

In addition, a barrel weapon with such a barrel lock is provided.

Due to the configuration of the contact body according to the invention, the contact needles are not only pressed onto the surface to be contacted, but also rotated, so that there is a relative movement between the surface to be contacted and the contact needle. This creates friction between the surface to be contacted and the contact needle, so that the surface to be contacted is roughened or the surface is scraped off. According to the invention, oxidation and / or corrosion layers and impurities are broken through or displaced, so that a reliable electrical contact can be established.

In an advantageous development of the contact body, it can be provided that the contact body for each contact needle has a contact pin fixed in or on the guide body as a means of rotation, and the at least one contact needle has a recess that interacts with the contact pin has as a rotation means which is shaped such that the contact needle rotates in an axial movement relative to the guide body in operative connection with the contact pin.

What is achieved hereby is that the axial movement of the contact needles relative to the guide body is forcibly coupled with a rotational movement about the axis of the contact needles. Recesses and contact pins each work together in such a way that the contact needles perform a defined rotation relative to the axial movement.

Furthermore, it can be provided in the embodiment of the contact body that the recess is a spiral recess.

The angle of rotation in relation to the axial movement can be set by the slope of the spiral recess in the contact needle.

Furthermore, the contact body can be developed in such a way that the contact needle has a threaded pin which is preferably designed to pull or drive the contact pin with a contact needle out of the contact body in the non-assembled state.

In a further development of the contact body, it can be provided that the contact body has a cover with recesses through which the contact needles extend out of the housing.

Furthermore, the contact body can provide that the contact needles and the recesses are designed in such a way that the contact needles can be removed through the recesses for assembly and disassembly, in particular after the contact pins have been dismantled.

This ensures that the contact needles can be removed from the contact body after the contact pins have been removed. This means that broken or worn contact needles can be carried out in a few simple steps without tools by the on-board crew, for example a tank, and no special tools are required for assembly.

In an embodiment of the contact body, it can be provided that an elastic means, in particular a spring, is formed between the cover and the guide body, which pretensions the guide body against a firing direction.

This ensures that the guide body and thus also the contact needles are reliably withdrawn against the firing direction as soon as the wedge lock is opened.

Furthermore, the contact body can provide that a lever is formed behind the guide body in the weft direction, which lever can move the guide body axially in the weft direction.

By providing a lever for axially moving the guide body, it is achieved that a reliable power transmission to the guide body is ensured. As a result, the at least one contact needle can be reliably moved axially with respect to the housing.

Furthermore, the contact body can provide that each contact pin has at least one elastically pretensioned contact element, in particular a rotatably mounted ball or a sliding contact, in its tip.

This prevents the contact pin from tilting at its tip and ensures that the contact pins can be displaced reliably relative to the housing.

In an embodiment of the contact body, it can also be provided that the contact body, in particular the guide body, has contact sleeves in which the contact needles are mounted so as to be axially movable. For this purpose, the contact sleeves are arranged in corresponding recesses in the guide body. Furthermore, a second elastic means for pretensioning the contact needles can be formed in each contact sleeve. As an alternative and in the event that no contact sleeves are formed, the respective elastic means can also be arranged directly in the recess of the guide body.

This means that reliable electrical contact is made possible between the respective contact needle and the associated contact pin. The contact sleeve acts as an electrical intermediate element between the contact pin and the contact needle. Furthermore, by providing the contact sleeve, a specific length can be set for pretensioning the contact needles by the second elastic means.

In a further development of the contact body, it can also be provided that an opening is formed in the housing which can be covered by a cover which is secured by a pretensioned pressure piece.

Furthermore, the contact body can provide that an opening is formed in the housing, which opening can be covered by a lead contact holder which has at least one lead contact which is electrically connected to the at least one contact pin.

The contact pin can be electrically connected to the contact sleeves, which are electrically connected to the contact needles in order to form an electrical connection between the lead contact and the contact needle.

In a development of the contact body, it can be provided that the tip of the contact needle has scraping edges or blades which are designed such that material can be scraped off on a contact surface of a sleeve base to be contacted when the contact needle rotates.

This ensures that a reliable electrical contact is established between the contact body and the sleeve base and ignition failure is prevented.

The invention is to be explained below using an exemplary embodiment with reference to the drawings.

• 1 eine schematische Schnittdarstellung einer Ausführungsform eines erfindungsgemäßen Kontaktkörpers;
• 2 eine weitere schematische Schnittdarstellung in Seitenansicht der Ausführungsform des erfindungsgemäßen Kontaktkörpers gemäß 1;
• 3 eine schematische Schnittdarstellung im Bereich der Kontaktstifte der Ausführungsform des erfindungsgemäßen Kontaktkörpers gemäß 1 und 2;
• 4a eine schematische Darstellung einer erfindungsgemäßen Kontaktnadel, wie diese der Kontaktkörper gemäß 1 bis 3 umfasst;
• 4b eine weitere schematische Darstellung der Kontaktnadel gemäß 4a; und
• 5 eine schematische Darstellung der Spitze der Kontaktnadel gemäß 4a und 4b.

Show it:

• 1 a schematic sectional view of an embodiment of a contact body according to the invention;
• 2 a further schematic sectional illustration in side view of the embodiment of the contact body according to the invention according to FIG 1 ;
• 3 a schematic sectional illustration in the area of the contact pins of the embodiment of the contact body according to the invention 1 and 2 ;
• 4a a schematic representation of a contact needle according to the invention, such as the contact body according to FIG 1 to 3 includes;
• 4b a further schematic representation of the contact needle according to FIG 4a ; and
• 5 a schematic representation of the tip of the contact needle according to FIG 4a and 4b .

1 shows a schematic sectional illustration of an embodiment of the contact body according to the invention 1 for a gun barrel lock. The contact body 1 includes a housing 10 , at least one, preferably two, contact needles 20th , one inside the case 10 axially movably mounted guide body 30th for receiving the at least one contact needle 20th . The at least one contact needle 20th is axially movable within the guide body 30th stored.

The contact body 1 has rotation means 22nd , 40 for each contact needle 20th on, which are designed such that the contact needle 20th by moving axially relative to the guide body 30th rotates.

The means of rotation are for each contact needle 20th one in or on the guide body 30th fixed contact pin 40 educated.

The at least one contact needle 20th has as a means of rotation one with the contact pin 40 cooperating recess 22nd on, which is shaped such that the contact needle 40 with an axial movement relative to the guide body 30th in operative connection with the contact pin 40 rotates.

The contact body 1 has a lid 12 with recesses 14th through which contact needles 20th out of the case 10 extend out.

The contact needles 20th and the recesses 14th are designed such that the contact needles 20th for assembly and disassembly, especially after disassembly of the contact pins 40 , through the recesses 14th are removable.

Between the lid 12 and the guide body 30th is a first elastic means 50 , in particular a spring, formed that the guide body 30th biased against a weft direction S.

In the weft direction S behind the guide body 30th is a lever 65 formed, the guide body when actuated 30th can move axially in weft direction S.

The guide body 30th has contact sleeves 60 in which the contact needles 20th are axially movably mounted and in each of which a second elastic means 62 to pretension the contact needles 20th is trained.

2 shows a further schematic sectional illustration of the embodiment of the contact body according to the invention 1 according to 1 . The cutting plane according to 2 is orthogonal to the cutting plane according to 1 .

In the case 10 is an opening 18th formed by a cover 80 can be covered by a prestressed pressure piece 70 is secured.

It is also in the housing 10 an opening 19th formed by a lead contact holder 90 can be covered. The lead contact holder 90 has at least one lead contact 92 on, the electrical with the at least one contact pin 40 , connected is. The contact pin 40 is electrical with the contact sleeves 60 connected, which in turn are electrically connected to the contact needles 20th are connected to an electrical connection between the lead contact 92 and the contact needle 20th to train.

3 shows a schematic sectional illustration transversely to the weft direction S in the area of the contact pins 40 the embodiment of the contact body according to the invention 1 according to 1 and 2 . The sectional view according to 3 is orthogonal to the cutting planes according to 1 and 2 .

Every contact pin 40 has at least one elastically prestressed contact element 44 , in particular a rotatably mounted ball or a sliding contact, in its tip 42 on.

Furthermore, each contact pin 40 an internal thread 48 in which the top 42 opposite end. In the internal thread 48 can be a threaded stem 26th a contact needle 20th , which is carried as a spare part, for example, can be screwed in so that the contact pin 40 can be pulled out.

Is the contact pin 40 from the contact body 1 removed, the respective contact needle 20th through the recess 14th of the lid 12 from the contact body 1 can be removed.

A new contact needle 20th can then be inserted into the contact body 1 through the recess 14th of the lid 12 and subsequent assembly of the previously removed or a new contact pin 40 to be assembled.

The contact needles 20th who have favourited Contact Pins 40 and the contact sleeves 60 are made of electrically conductive material such as metal to provide an electrical connection from the lead contacts via the contact pins 40 on the respective contact sleeve 60 and finally on the respective contact needle 60 to manufacture. The lid 12 , the guide body 30th and the lead contact holder 90 are made of non-conductive material.

When actuated, the lever 65 rotated so that the guide body 30th against the at least one elastic means 50 is moved in the firing direction S. This continues until the contact needles 20th hit the surface to be contacted, such as the ammunition's propellant charge. With further actuation the contact needles 20th not moved further in the firing direction S, but dive against the force of the second elastic means 62 in the guide body 30th one.

The contact needles move 20th relative to the guide body 30th .

For tool-free replacement of the contact needles 40 must with the contact body removed from the weapon lock 1 just the cover 80 that came with the pressure piece 70 is secured against falling out of the housing 10 be pushed. Then the contact pins are located 40 free. With a contact needle 20th can the contact pins 40 from the guide body 30th be pulled out and the contact needle 20th can from the lid 12 be pulled out. The new contact needle 20th can be mounted and the contact pin 40 is reinserted and with the cover 80 secured. Likewise, a defective second elastic means can also 62 it will be exchanged.

4a shows a schematic representation of a contact needle according to the invention 20th for use in a contact body 1 according to 1 to 3 . 4b shows a further schematic representation of the contact needle 20th according to 4a in an opposite 4a rotated position.

Like that 4a and 4b the recess can be seen 22nd the contact needle 20th a spiral recess 22nd . This ensures that the contact needle 20th the surface of the recess 22nd following, in operative connection with the associated contact pin 40 rotates with an axial movement.

As in 4a and 4b The threaded pin is easy to see 26th the contact needle 20th at one of the top 24 opposite end of the contact needle 20th trains. The threaded pin is designed for the contact pin 40 with a contact needle 20th in the unassembled state from the contact body 1 to pull out or drive out.

5 shows a schematic representation of the tip 24 the contact needle 20th according to 4a and 4b . The summit 24 the contact needle 20th has scraping edges or blades. These are designed in such a way that when the contact needle rotates 20th material can be scraped off on a contact surface of a sleeve base to be contacted. This creates a reliable electrical contact.

The above disclosure relates equally to the contact body 1 as such, the contact needle 20th seen by itself, a gun barrel closure, which the contact body 1 includes, as well as a barrel weapon which has such a barrel lock.

List of reference symbols

1

Contact body

10

casing

12th

cover

14th

Recesses

18th

openings

19th

opening

20th

Contact needle

22nd

Recess

24

top

26th

Threaded stud

30th

Guide body

40

Contact pin

42

Tip of the contact pin

44

rotatably mounted ball

46

third elastic means

48

inner thread

50

first elastic means

60

Contact sleeve

62

second elastic means

65

lever

70

Pressure piece

80

cover

90

Lead contact holder

92

Lead contact

S.

Weft direction

QUOTES INCLUDED IN THE DESCRIPTION

This list of the 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 assumes no liability for any errors or omissions.

Patent literature cited

• DE 736564 A [0004]
• EP 1199537 A2 [0005]

Claims (16)

Contact body (1) for a barrel lock, comprising a housing (10), at least one contact needle (20) and a guide body (30) mounted axially movably within the housing (10) for receiving the at least one contact needle (20), the at least one of the contact needles (20) is mounted axially movably within the guide body (30), characterized in that the contact body (1) has rotation means (22, 40) for each contact needle (20) which are designed such that the contact needle (20) during an axial movement rotates relative to the guide body (30). Contact body (1) after Claim 1 , characterized in that the contact body (1) for each contact needle (20) has a contact pin (40) fixed in or on the guide body (30) as a means of rotation, and the at least one contact needle (20) has a recess cooperating with the contact pin (40) (22) as a means of rotation, which is shaped such that the contact needle (40) rotates in an axial movement relative to the guide body (30) in operative connection with the contact pin (40). Contact body (1) after Claim 2 , characterized in that the recess (22) is a spiral recess (22). Contact body (1) according to one of the Claims 2 or 3 , characterized in that the contact needle (20) has a threaded pin (26) which is preferably designed to pull or drive the contact pin (40) with a contact needle (20) in the non-assembled state from the contact body (1). Contact body (1) according to one of the preceding claims, characterized in that the contact body (1) has a cover (12) with recesses (14) through which contact needles (20) extend out of the housing (10). Contact body (1) after Claim 5 , characterized in that the contact needles (20) and the recesses (14) are designed such that the contact needles (20) can be removed through the recesses (14) for assembly and disassembly, in particular after dismantling the contact pins (40). Contact body (1) according to one of the preceding claims, characterized in that a first elastic means (50), in particular a spring, is formed between the cover (12) and the guide body (30), which the guide body (30) against a firing direction (S) preloads. Contact body (1) according to one of the preceding claims, characterized in that a lever (65) is formed behind the guide body in the weft direction (S), which lever can move the guide body (30) axially in the weft direction (S). Contact body (1) according to one of the preceding Claims 2 to 8th , characterized in that each contact pin (40) has at least one elastically prestressed contact element (44), in particular a rotatably mounted ball or a sliding contact, in its tip (42). Contact body (1) according to one of the preceding Claims 2 to 9 , characterized in that the contact body (30) has contact sleeves (60) in which the contact needles (20) are axially movably mounted and in each of which a second elastic means (62) is formed for pretensioning the contact needles (20). Contact body (1) according to one of the preceding claims, characterized in that an opening (18) is formed in the housing (10) which can be covered by a cover (80) which is secured by a pretensioned pressure piece (70). Contact body (1) according to one of the preceding Claims 2 to 11 , characterized in that an opening (19) is formed in the housing (10) which can be covered by a lead contact holder (90) which has at least one lead contact (82) which is electrically connected to the at least one contact pin (40) and wherein the contact pin (40) is electrically connected to the contact sleeves (60), which are electrically connected to the contact needles (20) in order to form an electrical connection between the lead contact (82) and the contact needle (20). Contact body (1) according to one of the preceding claims, characterized in that the tip (24) of the contact needle (20) has scraping edges or blades which are designed in such a way that, when the contact needle (20) rotates, material on a contact surface of a sleeve base to be contacted can be scraped off. Contact needle (20) for use with a contact body (1) according to one of the Claims 1 to 13 . Weapon barrel closure, comprising a contact body (1) according to one of the Claims 1 to 13 . Gun barrel comprising at least one barrel lock according to Claim 15 .

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