阅读说明：本技术 带锁闭系统和具有带锁闭系统的呼吸空气供应系统 (Respiratory air supply system with locking system ) 是由 J·赫尔曼 S·欣茨 于 2020-03-16 设计创作，主要内容包括：本发明涉及一种带锁闭系统(100)以及一种具有这种带锁闭系统(100)的呼吸空气供应系统。在带(1)处固定有具有卡锁头部(3)的带扣(2)。卡锁头部(3)能够引入到锁闭体(20)的卡锁开口(5)中并且又能够从卡锁开口(5)中运动出来。保持元件(9)在保持位置中将卡锁头部(3)保持在卡锁开口(5)中。操纵元件(6)能够相对于锁闭体(20)运动并且在运动时使保持元件(9)转移到释放位置中。在释放位置中,保持元件(9)释放卡锁开口(5)。(The invention relates to a locking system (100) and to a breathing air supply system having such a locking system (100). A buckle (2) having a latching head (3) is fastened to the belt (1). The locking head (3) can be introduced into a locking opening (5) of the locking body (20) and can be moved out of the locking opening (5). The retaining element (9) retains the latching head (3) in the latching opening (5) in the retaining position. The actuating element (6) can be moved relative to the locking body (20) and, when moved, displaces the retaining element (9) into the release position. In the release position, the retaining element (9) releases the latching opening (5).)

1. A belt locking system (100), in particular for a breathing air supply device (25,26), comprising:

-a belt (1),

-a buckle (2) having a snap-on head (3),

-a locking body (20) having a latch opening (5),

-a holding element (9), and

-an operating element (6),

wherein the buckle (2) or the locking body (20) is fixed at the strap (1),

wherein the locking head (3) can be introduced into the locking opening (5) and can be moved out of the locking opening (5),

wherein the holding element (9)

-movable with respect to the locking body (20) between a retaining position and a release position,

in the retaining position, protrudes into the latch opening (5) and retains the latch head (3) in the latch opening (5), and

-releasing the latch opening (5) in the release position and thereby enabling the latch head (3) to move out of the latch opening (5),

wherein the operating element (6)

-is movable, more particularly preferably linearly movable, relative to the locking body (20), and

-is mechanically connected to the holding element (9), and

wherein a movement of the actuating element (6) relative to the locking body (20) causes the retaining element (9) to be transferred from the retaining position into the release position.

2. The belt locking system (100) of claim 1,

it is characterized in that the preparation method is characterized in that,

the locking head (3) can be moved out of the locking opening (5) by being moved in a removal direction (ER), and

the actuating element (6) is arranged in such a way that a movement of the actuating element (6) in an actuating direction (BR) causes the retaining element (9) to be transferred from the retaining position into the release position,

wherein the handling direction (BR) is perpendicular or oblique to the extraction direction (ER),

in particular, an angle of between 60 ° and 120 °, particularly preferably a right angle, occurs between the two directions (BR, ER).

3. The belt locking system (100) of claim 2,

it is characterized in that the preparation method is characterized in that,

the locking body (20) extends in a locking body plane,

wherein the actuating direction (BR) extends parallel to the closure body plane and

wherein the extraction direction (ER) is perpendicular or oblique to the closure body plane.

4. The belt locking system (100) of any one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the actuating element (6) can be moved relative to the locking body (20) in an actuating direction (BR) and in an opposite direction, and

the holding element (9) has a first section (7.1) which, in the holding position, projects into the latch opening (5) and, in the release position, releases the latch opening (5),

wherein the actuating element (6) is connected to the holding element (9) in such a way that,

such that a movement of the actuating element (6) in the actuating direction (BR) moves the holding element (9) into the release position, and

the first section (7.1) is moved in a first opening direction (Ö R.1),

wherein the first opening direction (Ö R.1) is preferably perpendicular or oblique to the operating direction (BR).

5. The belt locking system (100) of claim 4,

it is characterized in that the preparation method is characterized in that,

the holding element (9) has a second section (7.2),

wherein the two sections (7.1,7.2) project into the latch opening (5) from two opposite sides in the retaining position and release the latch opening (5) in the release position,

wherein a movement of the operating element (6) in the operating direction (BR) causes a movement of the first section (7.1) in the first opening direction (Ö R.1) and a movement of the second section (7.2) in a second opening direction (Ö R.2),

wherein each opening direction (Ö R.1, Ö R.2) is perpendicular or oblique to the steering direction (BR), and

wherein the second opening direction (Ö R.2)

-antiparallel to the first opening direction (Ö r.1) or

-oblique to said first opening direction (Ö r.1).

6. The belt locking system (100) of any one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the locking body (20) has an actuating opening (19),

the actuating opening is preferably positioned at a distance from the latching opening (5),

wherein the actuating element (6) is guided through the actuating opening (19) such that at least a part of the actuating element (9) protrudes beyond the locking body (20) and

wherein the locking body (20) is located between the protruding portion of the actuating element (6) and the holding element (9).

7. The belt locking system (100) of any one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the belt locking system (100) comprises a deflection body (11),

wherein the movement of the actuating element (6) relative to the locking body (20)

-causing a movement of the holding element (9) relative to the deflecting body (11), and

-this relative movement causes the retaining element (9) to pass from the retaining position into the release position.

8. The belt locking system (100) of claim 7,

it is characterized in that the preparation method is characterized in that,

the holding element (9) rests in two positions against at least one deflection edge (12) of the deflection body (11),

the deflection body (11) is preferably located between two spatially separated sections (10.1,10.2) of the holding element (9).

9. The belt locking system (100) of claim 7 or claim 8,

it is characterized in that the preparation method is characterized in that,

the deflection body (11) is connected to the locking body (20) and

the holding element (9) is movably held between the locking body (20) and the deflection body (11),

preferably movably held between the locking body (20) and a top section (30) of the deflection body (11).

10. The belt locking system (100) of any one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the locking head (3) has a top section (13) and a trunk section (14),

wherein the top section (13) protrudes beyond the trunk section (14) in at least one protruding direction, and

wherein the retaining element (9) projects into the latching opening (5) in the retaining position in such a way that the dimension of the top section (13) in the projection direction is greater than the dimension of the part of the latching opening (5) that remains free.

11. The belt locking system (100) of claim 10,

it is characterized in that the preparation method is characterized in that,

the top section (14) has an edge section (16) which is curved and/or chamfered,

wherein the belt locking system (100) is designed in such a way that the introduction of the locking head (3) into the locking opening (5) is facilitated,

the edge section (16) is used for holding the holding element (9)

-from the position in which the retaining element (9) projects into the latching opening (5), in particular from the retaining position,

exercise of sports

-into a position in which the retaining element (9) releases the latch opening (5), in particular into the release position.

12. The belt locking system (100) of claim 10 or claim 11,

it is characterized in that the preparation method is characterized in that,

the trunk section (14) has a dimension in the or at least one projection direction which is smaller than the dimension of the latching opening (5),

so that a locking head (3) introduced into the locking opening (5) can be moved relative to the locking opening (5) while the holding element (9) is in the holding position.

13. The belt locking system (100) of any one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the holding element (9) comprises a curved and preferably elastic rod (7.1,7.2,8.1,8.2,10) or a clip, which is preferably elastic,

wherein, when the holding element (9) is in the holding position, the bar (7.1,7.2,8.1,8.2,10) or at least one section (7.1,7.2) of the clip engages into the latching opening (5).

14. The belt locking system (100) of claim 13,

it is characterized in that the preparation method is characterized in that,

the rod (7.1,7.2,8.1,8.2,10) or the clip is fixedly connected to the actuating element (6),

wherein preferably the rod (7.1,7.2,8.1,8.2,10) or the clip and the actuating element (6) form a single component.

15. Use of a belt locking system (100) according to one of the preceding claims as a component of a carrier system (1,23,24,100) for a breathing air supply device (25, 26).

16. A breathing air supply system (1000), comprising:

-a breathing air supply device (25,26), and

-at least one belt locking system (100) according to any one of claims 1 to 14.

17. The breathing air supply system (1000) according to claim 16,

it is characterized in that the preparation method is characterized in that,

the respiratory air supply system (1000) comprises

-a carrying unit (24) carrying the breathing air supply device (25,26), and

at least one carrier tape (1), preferably two carrier tapes (1),

wherein the breathing air supply system (1000) is portable in the manner of a backpack or a satchel and

wherein the or each carrier tape (1) is or are each releasably or connectable with the carrier unit (24) by means of a tape closure system (100) according to any one of claims 1 to 14,

wherein preferably the or each carrier belt (1) acts as a belt of the or a belt locking system (100), respectively.

Technical Field

The invention relates to a belt locking system and a breathing air supply system having such a belt locking system.

Background

A belt locking system (Gurtverschlusssystem) is capable of establishing a releasable connection between a belt and a further component, for example a further belt. Belt locking systems are known from a range of different applications.

One range of applications is necklaces, which carry jewelry and are placed around the neck of a wearer. A two-part strap locking system (in english: two-part snap fastener) is described in GB 2026595A. The housing 12 of the first part 10 accommodates a resilient part (leaf spring means 13) having two curved grip portions (arc-shaped intermediate portions 18, 18) and two hooks (hook means 19). The resilient part 13 can be pushed into the second part and guided by a curved guide element (guide member 22) to a recess which forms a snap lock (sometimes called snap lock) (latch part 23).

In another application, the belt locking system belongs to a carrying system that enables carrying the device at the body, for example according to the manner of a backpack. In one application, the device is a breathing air supply device which supplies breathing air to a carrier. Due to the breathing air supply device, the carrier can stay in an environment that is harmful to humans, for example in a space that contains gaseous harmful substances after a fire or other undesirable event.

Delberg (Dr ä ger) provides a cyclic respiratory protection device under the name BG4 for mine rescue and fire protection.

In order to place the device, the carrying system and for this purpose the belt locking system need to be opened manually. After use, the breathing air supply system or other personal protective equipment must be cleaned frequently. The belt is often cleaned separately from the rest of the system. In order to clean the belt of the carrier system, it is necessary in some applications to separate the belt from the rest of the carrier system.

Both, i.e. opening and separating, should take place as simply as possible, even if the carrier of the device is wearing a glove and no other person can open the carrying system. Of course, the belt locking system should not open accidentally.

Disclosure of Invention

The invention is based on the object of providing a belt locking system which can be opened more easily than known belt locking systems.

The invention is solved by a belt locking system having the features of claim 1. Advantageous embodiments are specified in the dependent claims.

The belt locking system according to the present invention comprises:

-a belt which is provided with a plurality of belts,

-a buckle (Schnalle) having a latching head,

-a locking body which is provided with a locking element,

-a holding element, and

-an operating element.

The locking body has a locking opening. The locking head at the buckle can be introduced into the locking opening and moved out of the locking opening again. When the latch head is introduced into the latch opening, the belt latch system latches. When the latch head is moved out of the latch opening, the belt latch system is opened.

In one alternative, a buckle comprising a latch head is secured at the strap. In a further alternative, a locking body with a locking opening is fixed at the strap. In both alternatives, the locking body and the further component fixed thereto, for example a further strap, can be releasably connected to the strap and again separated from the strap.

The retaining element is movable relative to the locking body between a retaining position and a release position. When the retaining element is in the retaining position, the retaining element then projects into the latching opening. The retaining element thereby retains the latch head in the latch opening and prevents the latch head from moving out of the latch opening. When the retaining element is in the release position, the retaining element releases the latch opening. In the release position, the retaining element thus enables the latch head to be moved out of the latch opening.

The actuating element can be moved relative to the locking body. The actuating element is mechanically connected to the holding element. The belt locking system is implemented as follows: movement of the actuating element in the actuating direction causes the retaining element to be transferred from the retaining position into the release position.

The latching head and the latching body with the latching opening can be designed so stably and mechanically robustly as a result of the invention that they withstand mechanical loads which occur as a result of shocks and impacts. These vibrations and impacts occur in particular when the detent head is held in the detent opening and, due to unavoidable or desired play, moves relative to the detent opening and strikes against at least one wall of the detent opening.

The retaining element retains the latch head in the latch opening and prevents the latch head from undesirably moving out of the latch opening.

The actuating element can be positioned such that it is accessible from the outside when a person wants to carry the device by means of a carrying system comprising the belt locking system according to the invention and to open the belt locking system by actuating the actuating element. It is possible that the actuating element is designed such that it protrudes to such an extent that the actuating element can then be actuated even by a carrier wearing the glove, and that the actuating element can also be actuated with only one hand.

The belt locking system according to the invention may belong to a carrying system, with whose auxiliary carrying device a person carries the device, preferably according to the manner of a backpack. The actuating element can be arranged in such a way that it protrudes from the body of the person and can thus be easily actuated.

The invention provides, on the one hand, a detent head and a detent opening, and, on the other hand, a retaining element and an actuating element for the retaining element. Owing to the invention, it is not necessary for the actuating element to act directly on the latching head or for the retaining element to act simultaneously as an actuating element. The detent head can be embodied as a rigid mechanical component, preferably in one piece. The locking body with the latching opening can also be embodied as a rigid mechanical component, preferably in one piece. This improves the mechanical stability of the belt locking system according to the invention compared to other belt locking systems.

Since a separate actuating element is not required in particular, the retaining element is pressed in order to then be able to remove the detent head from the detent opening. The user who manipulates the actuating element does not necessarily have to come into contact with the holding element. Due to the separate handling element, the holding element is better protected against contamination and mechanical damage. Such contamination or even damage occurs more frequently when a person has to handle the holding element directly. The invention thus reduces the risk of contamination or damage to the holding element.

The belt generally extends in a belt plane and along a belt-longitudinal axis. The detent head and the detent opening can be designed as follows due to the invention: when the latching head is located in the latching opening and is held by the holding element, the buckle with the latching head is prevented from rotating relative to the locking body about an axis of rotation parallel to the belt longitudinal axis or at least reduced to a rotation range predetermined by the construction. Rotation of the buckle relative to the locking body about an axis of rotation perpendicular to the plane of the belt is also prevented or at least reduced to a certain extent. These features improve safety in use and comfort in operation.

The actuating element can be moved relative to the locking body by a movement in an actuating direction. This movement is transmitted to the holding element according to the invention and causes the holding element to be transferred from the holding position into the release position. Preferably, the actuating element is linearly movable relative to the locking body.

Preferably, the actuating direction lies in a plane in which the (straightened) belt of the belt locking system extends. When a person carries the device by means of a carrying system comprising the belt locking system according to the invention, the belt lies generally flat against the body of the person. The actuating element preferably protrudes from the body of the person. The person can move the operating element in a direction parallel to his body. The body prevents the actuating element from deflecting the actuation and thus makes difficult the actuation of the holding element.

The locking head can be moved out of the locking opening by a movement relative to the locking opening in the removal direction. In one embodiment, the actuating direction is perpendicular or oblique to the removal direction. In the application just described, this design allows the locking head or also the locking body to be moved away from the body vertically or obliquely in order to open the belt locking system.

In a preferred refinement of this embodiment, the locking body extends in a locking body plane. The actuating direction extends parallel to the plane of the locking body. It is possible that the locking body lies flat against the body of a person who carries the device as described above with the aid of the belt locking system according to the invention. Since the actuating direction is parallel to the locking body plane, the locking body resting against the body of the person prevents the actuating element from deviating from the actuation by the person and thus makes opening of the belt locking system difficult.

According to the invention, the actuating element can be moved relative to the locking body in the actuating direction. This movement in the actuating direction causes the holding element to move from the holding position into the release position. For locking the belt locking system again, the actuating element can also be moved in the opposite direction relative to the locking body. Preferably, the restoring element, particularly preferably an elastic restoring element, urges the actuating element in the opposite direction. The reset element therefore seeks to move the holding element into the holding position and to remain in the holding position. The restoring element can be a component of the holding element or act on the holding element. This design avoids the need for an active locking of the belt locking system by means of the actuating element. Conversely, the belt locking system automatically locks itself once the latch head is introduced into the latch opening. Preferably, the actuating element is movable against a restoring force of the restoring element.

In a preferred embodiment, the holding element has a first section. The first section is movable back and forth between an engaged position, in which the first section projects into the latch opening, and a released position, in which the first section releases the latch opening. When the first section is in the engaged position, then the retaining element is in the retaining position. When the first section is in the released position, the retaining element is then in the released position. When the actuating element is actuated in an actuating direction, this movement is transmitted to the first section and the first section is moved from the engaged position into the released position.

Preferably, the first section is moved from the engaged position into the released position by a movement in a first opening direction. The first opening direction is preferably perpendicular or oblique to the operating direction. The design scheme is realized as follows: the belt locking system according to the invention is designed with smaller dimensions in the direction of manipulation than in the case of a design in which the direction of manipulation is parallel to the first opening direction.

In a development of this embodiment, the holding element has two sections spaced apart from one another in space, namely the first section and the second section described immediately above, which is preferably arranged mirror-symmetrically to the first section. Each of the two sections can be moved into an engaged position and into a released position. When the two sections are in the engaged position, they project into the latching opening from two opposite sides. Due to this configuration, the detent head is held in the detent opening from two opposite sides and is held with greater operational safety than if the detent head were held from only one side. Actuation of the actuating element in the actuating direction causes the two segments to move into the released position, preferably synchronously with one another.

The first section can be moved from the engaged position into the released position by a movement in a first opening direction. The second section can be moved from the engaged position into the released position by a movement in a second opening direction. Preferably, the two opening directions are anti-parallel to each other or inclined to each other, and preferably both are perpendicular or inclined to the steering direction and to the longitudinal axis of the belt. The actuation of the actuating element thus causes the two segments to move away from each other. The design scheme is realized as follows: the actuation of the actuating element causes the retaining element to be quickly transferred into the release position.

According to the invention, the actuating element can be moved relative to the locking body into an actuating direction. In one embodiment, the actuating element is guided through an actuating opening in the closure body. A part of the actuating element or the entire actuating element protrudes to one side from the actuating opening and thus protrudes beyond the locking body and can be actuated. The blocking body is located between the protruding part and the retaining element. In this way, the locking body protects the holding element better than in other embodiments against contamination and damage.

As mentioned above, the person can carry the device at the body by means of a carrying system, for example in the manner of a backpack, wherein the carrying system comprises at least one belt locking system according to the invention. Preferably, the carrying system is carried by the person in such a way that the locking body is located between the body of the person and the protruding part of the actuating element. The retaining element is then located between the body of the person and the locking body. On the one hand, the body of the person holds the locking body and prevents the actuating element from deviating in terms of actuation. On the other hand, the holding element is located between the locking body and the body of the person, thereby protecting the holding element from contamination and injury.

In a preferred refinement of this embodiment, the belt locking system is designed such that the following are promoted: the locking body is located between the strap and the retaining element at least when the locking head is located in the locking opening. Thereby, the strap and the locking body together contribute to protecting the holding element from contamination and damage.

According to the invention, the actuation of the actuating element in the actuation direction causes the retaining element to be transferred from the retaining position into the release position. In one embodiment, the actuation of the actuating element causes a linear movement of the holding element relative to the locking body in the actuating direction. In one embodiment, the belt locking system comprises a deflection body, which is preferably fixedly connected to the locking body. Movement of the actuating element in the actuating direction causes the holding element to move relative to the locking body. This relative movement causes the retaining element to pass from the retaining position into the release position. The deflection body forces the transition and movement into the release position. This embodiment results in a particularly simple mechanical structure: it is sufficient that the holding element is linearly movable. The actuating element can be fixedly connected to the holding element. The deflection body may be a rigid block. The shape of the deflection body forces the moving retaining element to be transferred into the release position. Preferably, the transition is performed against a restoring force of the preferably elastic retaining element.

Preferably, the retaining element rests against at least one deflection edge of the deflection body both in the retaining position and in the release position. Particularly preferably, the deflection body is located between two sections of the holding element, which are spaced apart from one another.

In a preferred embodiment, the retaining element is movably held between the locking body and the deflecting body, so that the retaining element can be moved from the retaining position into the release position and back. Particularly preferably, the retaining element is held between the locking body and the projecting top section of the deflection body. This design, in particular in combination with a resiliently designed retaining element, avoids the need for an additional retaining element for the retaining element. This embodiment therefore increases the mechanical stability of the belt locking system.

In a preferred embodiment, the detent head has a top section and a backbone section. Preferably, the top section is connected to the trunk section in a planar and fixed manner. In at least one protruding direction, the top section protrudes beyond the trunk section. It is possible that the top section projects beyond the trunk section in each direction.

In one embodiment, the detent head has the shape of a mushroom or comprises a mushroom-shaped component. Mushroom representation: the latching head or the component part has a T-shape in each case in two cross-sectional planes perpendicular to one another. The trunk section may be constructed solid or have a plurality of supports (Streben, sometimes referred to as struts) parallel to one another.

In a preferred embodiment, the retaining element projects into the latching opening in the retaining position. When the retaining element projects into the latching opening, a part of the latching opening remains free. Preferably, the dimension of the top section in the projection direction is greater than the dimension of the free-standing part of the latching opening in the projection direction. The retaining element thus prevents the locking head from sliding out of the protruding direction in a purely mechanical manner.

In a development of this embodiment, the dimension of the top section in the projection direction is smaller than the dimension of the latching opening in the latching opening, preferably in each direction. Due to this small size, the detent head can be moved relative to the detent opening when the detent head is introduced into the detent opening and the holding element is in the holding position and engages into the detent opening. This embodiment increases the flexibility of the belt locking system according to the invention and also increases the carrying comfort of a carrying system with a belt locking system.

In one embodiment, the top section comprises an edge section, preferably a circumferential edge section, wherein the edge section is curved or chamfered, viewed in a plane parallel to the removal direction. The belt locking system is designed according to this design as follows: when the latching head is introduced into the latching opening, the curved or chamfered edge section moves the retaining element, specifically from the position in which the retaining element projects into the latching opening into the position in which the retaining element releases the latching opening. In particular, the edge section is moved when the holding element is introduced from the holding position into the release position. Preferably, the transition is performed against a resetting force of the holding element.

The design with a curved or chamfered edge section eliminates the need for the user to perform an additional hand grip or other procedure in order to release the latch opening when the belt latch system is locked. The user merely has to introduce the latching head into the latching opening. Due to the curved or chamfered edge section, the holding element itself is thereby temporarily moved into the release position, preferably against a restoring force. Preferably, the retaining element springs back into the retaining position upon further introduction and retains the completely introduced latch head in the latch opening.

In one embodiment, the holding element comprises a curved bar or at least one clip. Such a curved rod or clip may also function as a holding element, i.e. the holding element is such a rod or such a clip. Preferably, the bar or clip is elastic, wherein the spring force strives to keep the holding element in the holding position. The actuating element can be actuated against a restoring spring force. When the retaining element is in the retaining position, then at least one section of the bar or clip engages into the latching opening. The design with the rod or the clip results in a particularly simple mechanical design. It is possible for the holding element to be constructed in one piece.

In a further development of this embodiment, the rod or the clip is fixedly connected to the actuating element, which further increases the mechanical stability. Particularly preferably, the holding element and the rod or clip form the sole component.

In a preferred application, the belt locking system according to the invention is used as part of a carrying system with which an assistant person can carry a breathing air supply device, in particular a circulation-breathing air supply device. The breathing air supply device can be used by a person in order to be able to breathe in an environment loaded or possibly loaded with gaseous harmful substances or, for example, to breathe underwater. The belt locking system according to the invention belongs to a carrying system for the breathing air supply device.

Furthermore, the invention relates to a breathing air supply system having such a breathing air supply device and having at least one belt locking system according to the invention. The advantages achieved with the belt locking system according to the invention are also advantages of the breathing air supply system.

Preferably, the breathing air supply system can be carried in the manner of a backpack or a satchel and comprises at least one carrying strap, preferably two carrying straps arranged in parallel. If two carrying straps arranged in parallel are used, the person can carry the breathing air supply system on the back or in front of the chest in the manner of a backpack. The two carrying straps are guided around the two shoulders of the person.

Preferably, the breathing air supply system further comprises a carrying unit. The carrying unit holds a breathing air supply device. The or each carrier tape is or can be releasably connected to the carrier unit by means of the tape closure system according to the invention. In the case of two carrier tapes, the breathing air supply system therefore preferably comprises two tape closure systems according to the invention which releasably hold the two carrier tapes at the carrier unit. The or each carrier tape can be quickly released from the carrier unit by a person manipulating the respective actuating element of each tape locking system. This is particularly advantageous if the breathing air supply system has to be cleaned after use and the or each carrier strip is cleaned in a different manner than the rest of the breathing air supply system. Furthermore, because the tape locking system according to the present invention is capable of quickly replacing a damaged or contaminated carrier tape with an intact and uncontaminated carrier tape.

Drawings

The invention is described below with the aid of examples. Here:

fig. 1 shows an open belt locking system according to the invention in a perspective view, wherein the belt is shown obliquely above the locking unit;

fig. 2 shows the belt locking system of fig. 1 in perspective, wherein the locking unit is shown obliquely above the belt;

FIG. 3 shows a cross-sectional view of the belt locking system of FIGS. 1 and 2, wherein the retaining element is directed toward the viewer;

fig. 4 shows a breathing air supply system with a belt locking system according to fig. 1 to 3.

Detailed Description

A belt locking system 100 according to the present invention according to this embodiment is shown in fig. 1 to 3. The belt locking system 100 comprises two components, namely a belt unit 22 and a locking unit 4, which can be releasably connected to each other. The belt unit 22 is shown above the locking unit 4 in the perspective view of fig. 1. The locking unit 4 is shown above the belt unit 22 in the perspective view of fig. 2, and is directed toward the viewer and in front of the belt unit 22 in the cross-sectional view of fig. 3.

The belt unit 22 includes:

an elastic belt 1 extending along a belt-longitudinal axis GL,

a rigid buckle 2 having two strap openings 18, an

A rigid latch head 3.

Locking head 3

-a design in the shape of a mushroom,

is fixedly connected with the buckle 2, and

comprising a top section 13 with a circumferential edge 21 and a trunk section 14, wherein the sections 13,14 are fixedly connected to each other.

The belt 1 forms a loop which is guided through two belt openings 18. Which holds the buckle 2 and thus the latch head 3 at the free end of the belt 1. The latch head 3 is located between the two belt openings 18, preferably centrally.

The top section 13 has a rectangular, preferably square, contour with rounded corners and projects in each direction beyond an equally rectangular, preferably square trunk section 14. Thus, an undercut section 15 is formed around the trunk section 14. The trunk section 14 is fixedly connected with the buckle 2.

In this embodiment, the top section 13 and the trunk section 14 are each designed as a solid body, which increases the stability. The rectangular shape of the top section 13 and the rectangular shape of the trunk section 14 limit the possible rotation of the detent head 3 relative to the detent opening 4 about an axis perpendicular to the belt plane to a predetermined range of rotation.

The locking unit 4 includes:

a locking body 20 into which the locking opening 5 with rounded corners is inserted and into which the actuating opening 19 is inserted at a distance from the locking opening,

a holding element 9 in the form of an elastically curved rod,

a rigid operating element 6 in the form of a rectangular plate with rounded corners, an

A deflector body 11 having two deflecting edges 12 spaced apart from one another.

The locking body 20 has a rectangular, preferably square, contour and has the form of a rigid plate, i.e. extends in the locking body plane. Such a plane is perpendicular to the locking body plane, i.e. the plate-shaped actuating element 6 extends into this plane. The latch opening 5 has a rectangular, preferably square shape and has a circumferential inner wall 17. The actuating opening 19 is likewise rectangular and has rounded corners. The locking body 20 surrounds the latch opening 5 and the actuating opening 19 from all sides. This feature leads to particularly great stability.

The holding member 9 includes:

two waist sections 7.1,7.2,

two connecting sections 8.1,8.2, and

two spring legs 10.1,10.2 spaced apart from each other, which each bear against a deflecting edge 12.

Each connecting section 8.1,8.2 is connected on one side to a waist section 7.1,7.2 and on the other side to the actuating element 6. The actuating element 6 is thereby connected in a rotationally fixed manner to the holding element 9. Each waist section 7.1,7.2 is connected to a spring leg 10.1, 10.2.

The locking body 20 has the form of a rectangular plate with inclined corners and inclined edges. The deflector 11 is planar and is fixedly connected to a surface of the locking body 20. The detent opening 5 is inserted into the locking body 20 and the deflection body 11.

Deflection body 11

Having a trunk section and a top section 30 protruding beyond the trunk section in all directions,

also surrounding the latch opening 5, and

with a spacing with respect to the manoeuvring opening 19.

The holding element 9 bears on one side against the locking body 20 and on the other side against the head portion 30. The own spring force presses the holding element 9 from both sides against the trunk section of the deflection body 11. No additional holding means for the elastic holding element 9 are required. Two opposite openings are embedded in the trunk section, through which the two waist sections 7.1,7.2 protrude when the holding element 9 is in the holding position.

The actuating element 6 projects through the actuating opening 19 and can be moved linearly relative to the locking body 20 between two end positions, which are defined by two opposite inner walls of the rectangular actuating opening 19. Preferably, two further, opposite inner walls of the actuating opening 19 form a guide for the actuating element 6, since the actuating element 6 rests against these two further inner walls. One direction in which the actuating element 6 can be moved relative to the locking body 20 in both directions is an actuating direction BR, which is illustrated in fig. 3 and which extends parallel to the longitudinal axis GL of the illustrated section of the belt 1, and the other direction is the opposite direction. As a result of the guidance by the two further inner walls, the actuating element 6 can be moved only in and against the actuating direction BR, but cannot be moved perpendicular or oblique to the actuating direction BR.

The detent head 3 can be introduced into the detent opening 5 and moved out of the detent opening 5 again. The removal direction ER in which the detent head 3 can be moved out of the detent opening 5 is shown in fig. 1 and 2 and is perpendicular to the drawing plane of fig. 3 and points away from the viewer. The steering direction BR is in this embodiment perpendicular to the extraction direction ER. Preferably, the top section 13 and the detent opening 5 are dimensioned such that the detent head 3 can be introduced into the detent opening 5 in two or even four different rotational positions relative to the locking body 20, which increases the flexibility in use. An angle of 180 ° or 90 ° occurs between two adjacent rotational positions. In each rotational position, the latch head 3 is held in the latch opening 5 by the holding element 9.

The holding element 9 can be moved back and forth between a holding position and a release position relative to the locking body 20. In the retaining position, the two waist sections 7.1,7.2 engage into the latch opening 5 from two opposite sides, as is shown in fig. 1 to 3. When the latch head 3 is introduced into the latch opening 5, the belt longitudinal axis GL runs between the two waist sections 7.1, 7.2. In the release position, the two waist sections 7.1,7.2 do not engage into the latch opening 5, but are retracted behind the inner wall 17, and the retaining element 9 releases the latch opening 5.

The elastic rod-shaped retaining element 9 is prestressed in such a way that it is in the retaining position when no external force is acting and the two waist sections 7.1,7.2 engage in the detent opening 5. Fig. 1 and 2 show a case in which the belt unit 22 is not connected to the locking unit 4. The holding element 9 can be moved into the release position counter to its own spring force and can be returned into the holding position by its own spring force. Each waist section 7.1,7.2 can be moved in a respective opening direction Ö r.1, Ö r.2 from the engaged position into the released position. The two opening directions Ö r.1, Ö r.2 are perpendicular to the actuating direction BR, are anti-parallel to one another and lie in the latch body plane.

The band unit 22 is releasably connected to the locking unit 4 in that the band unit 22 is brought against the removal direction ER onto the locking unit 4 and the locking head 3 is introduced into the locking opening 5. The belt unit 22 or the locking body 20 rests against the body of the person. By moving the belt unit 22 onto the locking unit 4, the two opposite edges of the inclined or chamfered edge section 16 of the top section 13 come into contact with the two waist sections 7.1, 7.2. When the detent head 3 is moved further into the detent opening 5 and is thus moved counter to the removal direction ER, the edge portion 16 presses the two waist portions 7.1,7.2 away from each other against the spring force. Thereby, the latching opening 5 is released and the latching head 3 can be pushed further into the latching opening 5 until the buckle 2 touches the latching body 20. The latch head 3 slides over the two waist sections 7.1,7.2 and the waist sections 7.1,7.2 touch the backbone section 14 from two opposite sides. The restoring spring force of the holding element 9 causes: the waist sections 7.1,7.2 are moved toward one another again, preferably spring back, and from now on engage again in the latch opening 5. The two waist sections 7.1,7.2 bear against the undercut section 15 from two opposite sides and prevent the locking head 3 from sliding out of the locking opening 5 again. The holding element 9 is now in the holding position.

The two spring legs 10 bear against the two deflecting edges 12 and are pressed against the deflecting edges 12 by the spring force of the retaining element 9. As long as the actuating element 6 is not actuated, the inclined position of the deflecting edge 12 and the spring force of the retaining element 9 prevent the movement of the retaining element 9 when the detent head 3 is introduced and hold the actuating element 6 in the end position, which is shown in fig. 3. The retaining element 9 retains the latch head 3 in the latching opening 5 in the retaining position. Since the holding element 9 has the shape of a resilient bar and since the latching opening 5 is larger than the trunk section 14, the latching head 3 has a play, i.e. the latching head can be rotated relative to the latching opening 5 about an axis parallel to the removal direction ER, until the trunk section 14 strikes the inner wall 17.

For the further release of the belt unit 22 from the locking unit 4, the actuating element 6 is moved linearly and relative to the locking body 20 into the actuating direction BR until the actuating element 6 reaches the further end position. The manipulation may also be performed by a person wearing thick gloves. The two deflecting edges 12 are inclined to the actuating direction BR and to the opening direction Ö r.1, Ö r.2. This manipulation is performed against the spring force of the holding element 9. The two spring legs 10 slide along the inclined deflecting edge 12 away from the actuating opening 19. By this movement, the retaining element 9 is spread, i.e. the two spring legs 10 move away from each other, and the two waist sections 7.1,7.2 move away from each other and release the latching opening 5. The locking head 3 can in turn be moved out of the locking opening 5, i.e. in the removal direction ER.

Fig. 4 shows a breathing air supply system 1000 with a breathing air supply device, preferably in the form of a circulating breathing device, and with a carrier system. Due to the carrying system, a person can carry the breathing air supply system 1000 on his back in the manner of a backpack. The breathing air supply device comprises:

a reservoir 26 for breathing air, and

a hose system 25 for breathing air.

The carrier system for the breathing air supply device 25,26 comprises:

a back plate 28, which is located in front of the breathing air supply device in the viewing direction of fig. 4,

a holder (not shown) fixed at the back plate 28, which carries the breathing air supply device 25,26, and

-a belt system.

The belt system comprises two carrier belts 1, two retaining belts 27 and a waist belt 23. When a person carries the breathing air supply system 1000 on his back in the manner of a backpack, two carrying straps 1 are guided onto the two shoulders of the person. The waist belt 23 is guided around the waist of the person and locked. Two retaining straps 27 are mechanically connected to the back plate 28.

The back plate 28, the holder for the breathing air supply device 25,26 and the two holding straps 27 together form the carrying unit 24. When a person uses the breathing air supply system 1000 in an area having or possibly having gaseous harmful substances, the entire breathing air supply system 1000 needs to be cleaned. Preferably, both carrier tapes 1 and the waist tape 23 are detached from the carrier unit 24 for cleaning and cleaned separately, preferably by means of a water-based cleaning agent.

In order to be able to quickly disconnect the two carrier tapes 1 and the waist belt 23 from the carrier unit 24, the following releasable fastening arrangement is used:

as a connection between the carrier tape 1 and the retaining tape 27, in each case one tape locking system 100 according to the invention can be actuated with one hand, and

a locking system 29, which secures the waist belt 23 centrally at the back plate 28 and can likewise be operated with one hand.

In one embodiment, each carrier strip 1 carries a buckle 2 with a latch head 3 at its free and upper end in fig. 4. Each retaining strap 27 carries at one end a locking unit 4 with a latching opening 5. In a further embodiment, each carrier tape 1 carries a locking unit 4 with a locking opening 5 at its free end. Each retaining strap 27 carries at one end a buckle 2 with a latching head 3. Overall, the carrier system for the breathing air supply device therefore comprises two belt locking systems 100 according to the invention and a further locking system 29. The further locking system 29 can likewise be designed according to the invention.

List of reference numerals