EP2522251B1 - Lastträgervorrichtung - Google Patents

Lastträgervorrichtung Download PDF

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Publication number
EP2522251B1
EP2522251B1 EP12167926.0A EP12167926A EP2522251B1 EP 2522251 B1 EP2522251 B1 EP 2522251B1 EP 12167926 A EP12167926 A EP 12167926A EP 2522251 B1 EP2522251 B1 EP 2522251B1
Authority
EP
European Patent Office
Prior art keywords
load transfer
load
belt
carrying apparatus
rotation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP12167926.0A
Other languages
English (en)
French (fr)
Other versions
EP2522251A1 (de
Inventor
Euan Bruce
Barry Mcgeough
Christian McGill
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Berghaus Ltd
Original Assignee
Berghaus Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Berghaus Ltd filed Critical Berghaus Ltd
Publication of EP2522251A1 publication Critical patent/EP2522251A1/de
Application granted granted Critical
Publication of EP2522251B1 publication Critical patent/EP2522251B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45F—TRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY
    • A45F3/00—Travelling or camp articles; Sacks or packs carried on the body
    • A45F3/10—Pack-frames carried on the body
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45F—TRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY
    • A45F3/00—Travelling or camp articles; Sacks or packs carried on the body
    • A45F3/04—Sacks or packs carried on the body by means of two straps passing over the two shoulders
    • A45F3/08—Carrying-frames; Frames combined with sacks
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45F—TRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY
    • A45F3/00—Travelling or camp articles; Sacks or packs carried on the body
    • A45F3/04—Sacks or packs carried on the body by means of two straps passing over the two shoulders
    • A45F2003/045—Sacks or packs carried on the body by means of two straps passing over the two shoulders and one additional strap around the waist
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45F—TRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY
    • A45F3/00—Travelling or camp articles; Sacks or packs carried on the body
    • A45F3/14—Carrying-straps; Pack-carrying harnesses
    • A45F2003/144—Pack-carrying waist or torso belts

Definitions

  • the present invention relates to a load carrying apparatus.
  • load carrying apparatus having a load transfer belt.
  • rucksacks were introduced which distributed the weight of the load more evenly on the user.
  • One way of doing this was the introduction of hip fins. These were preformed elements that were rigidly attached to the frame of the rucksack in a position where they would rest on the user's hips during use. The load of the rucksack was then transferred through the frame to both the user's shoulders and hips. Because the hips are at a lower point, this arrangement stabilised the user's centre of gravity.
  • a disadvantage of the rigid connection between the hip fins and the frame is that the rucksack acts as a splint to the human body, i.e. it interferes with free movement.
  • the natural movement of the user's hips during walking was transferred directly to the frame because of the rigid connection between hip fin and frame; moving was thus awkward because the load of the load carrying apparatus itself was moved by natural movement of the hips.
  • walking and moving is therefore cumbersome and tiring.
  • walking causes motion of the hips.
  • stepping upwards or downwards, turning the torso, and leaning forwards are all types of movement that cause the hips to move up and/or down, backwards and/or forwards, as well as in a twisting manner.
  • US 2008/0035686 and US 2008/0041906 disclose a pivot attachment between the hip belt and rucksack.
  • US 7287677 also discloses a pivot attachment between the hip belt and rucksack, but in this case the hip belt is attached to the rucksack by rocker arms connected to the pivot.
  • US 2010/0243694 discloses a hip belt attached to a rucksack using an attachment system that has a ball and socket type connection.
  • these rucksacks do not succeed in striking a balance between the ability to efficiently transfer load to a user's hips and the flexibility of movement afforded to the user. It is perceived that these requirements are two opposing requirements, such that an increase in flexibility often results in a decrease in load transfer ability and vice versa.
  • WO 2005/048769 A1 discloses a backpack for back-mounting a compressed air cylinder fastened to the backpack by a cylinder fastening belt when a user wears a harness and waist belt.
  • an aim of the present invention is to provide load carrying apparatus with good load transfer from the load carrying apparatus to the hips of a user, but without a compromise to the range and flexibility of movement of the user, such that the movement of the hips of the user is not restricted.
  • the present invention achieves this aim by providing a connection between the load transfer belt and the frame of the load carrying apparatus that allows the desired movement of the load transfer belt with the movement of the user's body, without transferring the motion to the load of the load carrying apparatus.
  • the present invention provides a load carrying apparatus according to claim 1.
  • a rotary connection advantageously allows the load transfer belt to rotate with the up and down movement of the hips, whilst the hinge connection permits the belt to stay in the same position when the user leans forwards.
  • the provision of a rotary connection distinct from a hinge connection permits the belt to move independently in each of the two degrees of freedom. This independence of movement in each degree of freedom is important because it prevents motion that would cause a transfer of unbalanced load from the load carrying apparatus to the user. Therefore, the load carrying apparatus of the present invention increases the user's feeling of control.
  • the load carrying apparatus of the prior art either provide only a single degree of freedom, through the means of a pivot point, or provide three degrees of freedom though the use of a ball and socket joint.
  • the pivot joint is disadvantageous compared to the present invention, because the advantages of the hinge connection are not realised.
  • the ball and socket joint is disadvantageous compared to the present invention because the belt is free to rotate in any direction when a person is walking.
  • This means the belt is able to rotate around the body of a person, this causes the load of the load carrying apparatus to rock between an anterior and posterior position in relation to the user's back, whilst a user is walking.
  • the load of the load carrying apparatus rocks from side to side, rolling around the body an axis in the longitudinal direction (height) of the user. This creates a feeling of unbalance when using the load carrying apparatus.
  • the majority of the rotary motion of the belt whilst a user is walking is about the rotary axis of rotation, which prevents the unwanted motion experienced with a ball and socket joint.
  • the provision of a distinct hinge and rotary connection is also beneficial because preventing rotation about an axis in a longitudinal direction with respect to the user's height prevents the feeling of the load carrying apparatus pulling the user down (as the load rolls around the body) when the user bends forwardly to one side, for example, whilst scrambling over rocks.
  • the prevention of unwanted motion (rolling of the load around the body) of the load carried by the load carrying apparatus when a person is walking, but permitting a required range of motion (around the rotary axis of rotation) when walking means that the energy required to travel a certain distance is reduced when compared to conventional load carrying apparatus.
  • the present invention provides connections between the load carrying apparatus and the load transfer belt that permit unrestricted motion of the load transfer belt (without transferring the motion to the load carrying apparatus), within a range of motion required by the user, and at the same time prevent unwanted motion. This has the result of improved balance and increased energy efficiency of a user.
  • the rotary connection permits the load transfer belt to rotate 360° or more about the rotary axis of rotation, in both a clockwise and an anticlockwise direction.
  • the load transfer belt can rotate a certain degree in one direction and then the rotation can be reversed to the other direction.
  • the hinge connection permits the load transfer belt to rotate 180° or more about the hinged axis of rotation. In this case, the only practical restriction of movement about the rotary axis of rotation and/or the hinge axis of rotation is the physiology of the user's body.
  • the rotary axis of rotation is offset above the hinge axis of rotation.
  • the rotary axis of rotation can be offset above the hinge axis of rotation such that the rocking motion of the user's hips is transferred to the connection at the hinge.
  • This causes the hinge connection, as a whole, to rotate about the rotary axis of rotation.
  • This offset arrangement improves the transfer of motion from the user's hips to the rotary connection.
  • a further additional or alternative option is to offset the rotary axis of rotation from the centre of the load transfer belt.
  • offsetting the rotary axis of rotation from the centre of the load transfer belt permits the belt to move with a rocking motion rather than a purely rotational motion; a rocking motion much more closely resembles the natural movement of the hips.
  • the rotary connection only permits substantial rotation about a single axis.
  • the rotary connection comprises a housing and a hub positioned within a cavity of the housing.
  • the housing is dimensioned such that the hub and the housing can rotate relative to each other.
  • This arrangement of rotary connection only permits movement in one degree of freedom; that is, rotation about the rotary axis of rotation.
  • the relative rotary motion may be provided by rotation of the hub within the cavity of the housing with the housing stationary with respect to the load carrying apparatus.
  • the hub may be stationary with respect to the load carrying apparatus and the housing may rotate.
  • the hub may be a disc.
  • this arrangement of rotary connection has a low profile projection from the frame of the load carrying apparatus. For example, the projection from the frame is lower for the present arrangement of rotary connection than a ball and socket joint.
  • the hinge is located on the hub. Locating the hinge on the hub improves the transfer of load from the load carrying apparatus to the load transfer belt.
  • the hinge and hub may be formed as a single connection component. Such a construction further improves the ease of manufacture of the rotary and hinge connection.
  • the rotary axis of rotation may be offset above the hinge axis of rotation. In this case, the hip belt moves with a modified rocking motion which more closely resembles the natural movement of the hips.
  • the load carrying apparatus may further comprise a link member linking the load transfer belt to the hub.
  • the provision of a rotary connection distinct from a hinge connection permits the belt to move independently about the two axes of rotation. This independence of movement in each degree of freedom is important because it prevents motion that would cause a transfer of unbalanced load to the user. Therefore, the load carrying apparatus of the present invention increases the user's feeling of control, and reduces the energy input required by the user to walk a certain distance.
  • the rotary connection permits the load transfer belt to rotate 360° or more about the rotary axis of rotation, in both a clockwise and an anticlockwise direction.
  • the load transfer belt can rotate a certain degree in one direction and then the rotation can be reversed to the other direction.
  • the hinge connection permits the load transfer belt to rotate 180° or more about the hinged axis of rotation. In this case, the only restriction of movement about the rotary axis of rotation and/or the hinge axis of rotation is the physiology of the user's body.
  • the rotary axis of rotation is positioned to correspond, in use, to an axis of rotation about which the hips rock when a user is walking.
  • the rotary axis of rotation is offset above the centre of the load transfer belt by a distance of between 6 and 10 cm.
  • the link member may be a pole.
  • the link member may be one pole, or alternatively the link member may be one or more poles.
  • the hinge is a channel dimensioned to receive the one or more poles.
  • the channel and hub may be moulded as a single component.
  • the channel and the hub may be formed as separate components that snap-fit together.
  • the channel and hub may be formed as separate components and connected together using joining members.
  • Joining members can be, for example, bolts, self tapping screws, captive nuts or rivets.
  • two of the poles may join in the channel.
  • the joint may be formed using a screw connection.
  • the joint may be formed using a male-female connection.
  • the joint may be formed using a tight-fit tube to link the two poles.
  • the tight-fit tube may be made from plastic.
  • the load carrying apparatus may further comprise two shoulder straps for supporting the load carrying apparatus on the user's shoulders.
  • the frame of the load carrying apparatus may be constructed using metallic or plastic frame elements.
  • the frame of the load carrying apparatus may be constructed from a plastic sheet.
  • the frame may be constructed from a plastic sheet strengthened with metallic or plastic elements.
  • the frame converges at the rotational connection, to permit efficient load transfer from the load carrying apparatus to the load transfer belt.
  • such a frame construction effectively transfers load to the belt, but is also lightweight.
  • the frame members may be tubular.
  • the frame can be curved.
  • the lower region of the frame, below the rotary connection, may bend away from the load transfer belt. Such a curve will improve the freedom of movement of the belt relative to the frame.
  • the load carrying apparatus may further comprise locking straps connecting the load transfer belt to the rear of the load carrying apparatus.
  • the locking straps may be adjustable so that the user can set the range of movement around the rotary axis of rotation that suits their gait and/or comfort requirements, or to prevent rotation all together.
  • the load carrying apparatus may be, for example, any one of: a rucksack, a baby carrier, or a belt pack.
  • the load carrying apparatus may also be back mounted equipment, for example, breathing apparatus.
  • the load transfer belt may have:
  • the load transfer elements provide effective load transfer from the load carrying apparatus to the regions of the user's hips that, in use, align with the position of the load transfer elements, whilst the rotational joints permit each load transfer element to rotate by the necessary amount to fit the size of the user's pelvis.
  • This construction permits the load transfer belt to have a range of belt shape configurations to allow the load transfer belt to fit to a wide variety of user body shapes.
  • the provision of a rotational joint provides for freedom of movement instead of the freedom of movement being provided by substantial flexing the load transfer elements. This means that the transfer of load from the load carrying apparatus to the hips of the user is uncompromised.
  • the provision of the present load transfer belt with the connection between the load carrying apparatus and the load transfer belt of the present invention further improves efficiency of movement for the user, reducing the energy input required to move a certain distance when compared to load carrying apparatus of the prior art.
  • the combination also allows the load carrying apparatus to be used to carry a heavier load than load carrying apparatus of the prior art.
  • the load transfer belts of the prior art do not have load transfer elements connected by a rotational joint. Indeed the belts of the prior art do not have any form of articulated sections, as provided by the present invention. Instead the belts of the prior art provide what is known as living hinges. That is, the load transfer elements themselves flex and conform to the shape of a user's body. As such the load transfer elements of the belts of the prior art need to be more flexible than the load transfer elements of the present invention, i.e. they need to have reduced stiffness. A reduction in stiffness of the load transfer elements means they do not achieve the same level of load transfer as accomplished by the load transfer belt of the present embodiment. In addition, the comfort of the load transfer belts of the prior art is diminished compared to the present invention because of the need in the belts of the prior art to compromise the flexibility of the load transfer element(s) so as to achieve both comfort and load transfer.
  • the load transfer belt in use, is positioned to encircle a user's hips, and as such the length of the load transfer belt is measured in terms of the direction of encirclement around the user's hips, the length being measured from a fastener at one end of the belt to a fastener at the other end of the belt.
  • the principle loading direction is, a direction transverse to the length of the load transfer belt.
  • a transverse direction means a direction across the width of the belt.
  • a transverse direction may or may not be perpendicular to the length of the belt.
  • Load transfer is achieved by the load transfer elements being formed to have the necessary stiffness in the transverse direction.
  • the load transfer elements may extend to an area of the belt corresponding, in use, to the anterior region of the user's hips.
  • Many load carrying apparatus are designed to be positioned on the back (posterior region) of a user.
  • the provision of load transfer elements in an area of the belt corresponding to the anterior region of the hips permits load transfer from the person's back to the anterior region of the hips. This reduces the load and therefore stress on the lumbar region of the back.
  • the load transfer elements are joined to form a serpentine configuration.
  • the load transfer elements may be u-shaped and n-shaped.
  • the load transfer elements are u-shaped and n-shaped and are joined so as to have a serpentine configuration.
  • the serpentine configuration can be created by an adjacent u- and n-shaped load transfer element. That is, one end of a u-shaped load transfer element connects to one end of an n-shaped load transfer element.
  • the length of the serpentine configuration can be extended by connecting more u- and n-shaped load transfer elements, creating a series of alternating u- and n- shaped elements.
  • the serpentine configuration of u-shaped and n-shaped load transfer elements results in sections of the load transfer elements being positioned along a direction transverse to the length of the belt.
  • the alignment of sections of the load transfer elements in the direction of principle loading from the load carrying apparatus further improves load transfer from the load carrying apparatus to the load transfer belt.
  • the serpentine configuration is further advantageous because it is lightweight. A user may use the load carrying apparatus to carry heavy loads for long periods of time. Therefore, any reductions that can be made to the weight of the load carrying apparatus and load transfer belt will reduce the amount of fatigue a user experiences when carrying the load carrying apparatus.
  • the serpentine configuration is also easy to construct. This results in simplified manufacture of the load transfer belt.
  • the load transfer elements are made from plastic or from metal.
  • the serpentine configuration of load transfer elements increases the stiffness of the load transfer belt when compared to load transfer belts of the prior art.
  • the load of the load carrying apparatus will distort a load transfer belt in a direction opposite to the direction the load is acting.
  • a load transfer belt was fastened at its shortest length in a closed position to create a loop that would in use be positioned around a user's hips.
  • the load carrying apparatus 15 was placed on a flat surface. A distance D of 10 cm was measured from the centre of the load transfer belt 15 in a direction opposite to the direction the load would act and perpendicular from the load transfer belt.
  • the load transfer belt of the present invention had a distortion load (i.e. the load required to cause the 10 cm distortion) of more than 4 kg.
  • the distortion load of the tested load transfer belts of the prior art was below 3 kg.
  • Preferred embodiments of the invention will have a distortion load of more than 3 kg.
  • the belt is linked to the load carrying apparatus using a link member.
  • the link member may be positioned central to the belt.
  • load transfer elements are positioned on each side of the link member.
  • the serpentine configuration is also positioned on each side of the link member.
  • the load transfer elements of the serpentine configuration may be manufactured or arranged such that the spacing between the transverse sections of the load transfer elements are evenly spaced along the serpentine configuration, or along the belt. Even spacing of the transverse sections results in even distribution of load around the load transfer belt. In use, the distribution of load evenly around the hips of a user avoids a high loading in the lumbar region of the back, which is beneficial to the user in terms of improving comfort and limiting fatigue.
  • the sections of the serpentine configuration transverse to the length of the belt may have a central axis coincident with the axis of rotation of the rotational joint.
  • the rotational joint may be a pivot joint for both serpentine and non-serpentine configurations.
  • the pivot joint is formed by a male and a female connector.
  • the pivot joint is formed by two male connectors joined by a sleeve.
  • the male-female connector and the two male connector construction of the rotational joint both form a durable joint.
  • the connectors may be formed in the load transfer elements themselves. This advantageously allows the load transfer elements to be easily replaced.
  • the load transfer belt may have a panel extending the length of the load transfer belt.
  • the load transfer belt may be padded to further improve comfort for the user.
  • the panel may contain padding for the belt, which may be foam.
  • the load transfer elements may be connected to the panel of the load transfer belt.
  • the panel may connect to the load transfer elements at sections of the load transfer elements orientated along the direction of the length of the belt. In the case of u- and n-shaped load transfer elements, the connection may be at the bottom of the u and the peak of the n shaped elements.
  • the rotational joint may be accessible to the user for ease of replacement of one of the load transfer elements.
  • the load transfer elements may be fully contained within the panel.
  • the load transfer elements extend a greater distance in a direction transverse to the length of the belt towards the centre of the belt than towards the ends of the belt. In use, this configuration reduces the region at the anterior of the body of the user covered by the load transfer belt.
  • Figure 1 shows schematically a rear view of a load carrying apparatus 10, which in this example is a rucksack.
  • the rucksack of the present example can carry loads in excess of 32 kg.
  • the rucksack has two rear panels 11 and 14 within which a frame 18, not shown in Figure 1 , is orientated.
  • the frame extends the height of the rucksack to provide a rigid support to the rucksack.
  • a load carrying compartment, not shown in Figure 1 is secured to the frame and extends to the front of the rucksack.
  • Two shoulder straps 12, partially shown in Figure 1 extend from a connection with the frame, in an upper region of the rucksack, to a lower region of the rear of the rucksack.
  • the shoulder straps support the rucksack on a user's shoulders.
  • a load transfer belt 15 is positioned in the lower region of the rucksack, such that in use the belt can be positioned to encircle a user's hips, for transferring load from the rucksack to the user's hips.
  • a rotary connection 16 and a hinge connection 34 (the hinge connection not shown in Figure 1 ) connect the load transfer belt to the frame. The rotary connection is positioned between 6 and 10 cm above the centre of the load transfer belt.
  • Rear panel 14 extends to cover the frame, the connection of the shoulder straps to the frame, and the connection of the rotary and hinge connections to the frame.
  • the frame 18 comprises six tubular poles 19.
  • the frame construction is such that a curved tubular pole 19a forms the upper extent of the frame, and a curved tubular pole 19b forms the lower extent of the frame.
  • Each side of the frame is constructed using two poles 19c, 19d, 19e and 19f, such that each side can converge to the central region of the framed volume.
  • the poles 19e and 19f forming the sides of the frame in the upper region of the frame are longer in length than the poles 19c and 19d forming the sides of the frame in the lower region of the frame, such that the poles on the sides of the frame can converge in a region corresponding to the lumbar region of the back.
  • the poles at the upper and the lower extent are joined to the poles at the sides of the frame using connectors 20.
  • Each connector 20 has a channel sized to tightly receive a tubular pole of the frame.
  • the converging side poles are adjoined using a rear component 22 of the housing of the rotary connection 16.
  • the rear component having two channels 24 configured to tightly receive each of the longer and shorter side poles.
  • the poles are held in the channels using a recess 26 in the pole, which corresponds to, and when assembled engages with, a protrusion 28 in the channel.
  • the side tubular components of the frame are curved such that the lower region of the frame, below 17 where the rotary connection connects the frame, bends away from the load transfer belt.
  • FIG 6 shows schematically a side exploded view of the rotary connection and the hinge connection of the rucksack of Figure 1 .
  • the rotary connection is formed by a rear component 22 and front component 30 that join together (in this example with a screw connection) to form a housing, and the housing has a cavity in which a hub 32, which in the present example is a disc, can be positioned.
  • the cavity is dimension such that the hub is free to rotate within the cavity.
  • the screw connection is created by a threaded rim 40 on the front side of the rear component, the rim having a diameter greater than the diameter of the disc (the hub), and a threaded recess 42 of the front component; the threaded rim screwing into the recess to complete the screw connection.
  • the thread rim could be on the front component and the threaded recess on the rear component.
  • Alternative methods of connection could also be used to adjoin the front and rear components of the housing.
  • the hub 32 is supported in the cavity of the housing by a lip 43 that extends around the circumference of the front component and has an internal diameter less than the hub.
  • this lip prevents extensive lateral movement of the hub, restricting it, in use, to rotation about a single axis of rotation.
  • the use of a hub 32 inside the cavity of a housing, with no additional restrictions, means that in this example, the hub can be freely rotated by a full 360° for a limitless number of rotations in both a clockwise and anti-clockwise direction.
  • the rear component 22 and front component 30 of the housing, and the hub 32 may be manufactured from a high-strength, low-friction or self lubricating plastic. Suitable plastics include polyamides.
  • the hinge connection 34 is formed on the hub 32 of the rotary connection.
  • the hinge connection is formed by a link member 36 being received in a channel 38 formed by an arch.
  • the hub and channel are formed as a single component, by plastic moulding.
  • the channel can be formed in a separate arched component that is connectable to the hub, an example of which is shown in Figure 9 .
  • the hub 32 is formed with a rectangular hole 44; the hole having stepped sides.
  • the separate arched component has stepped feet 47 and 48. The feet of the arched component interlock with the steps 46 of the sides of the hole to secure the arched component in the hole of the hub.
  • the arched component is a snap-fit to the hub.
  • the arched component may be connected to the hub using bolts, self tapping screws, captive nuts or rivets.
  • 5 bolts may attach the arched component to the hub; two bolts on one elongate side of the channel and three bolts on the other elongate side of the channel.
  • the link member 36 received in the channel 38 can be formed as a single component or as two connectable segments.
  • the two segments can connect in the channel, as illustrated in Figure 10 .
  • the connection can be formed using a male and female connector 50, or alternatively using a screw connection.
  • the connectable segments of the link member could be connected using a tubular connector 52.
  • the tubular connector 52 can be formed from plastic and dimensioned to tightly fit over the ends of the two segments of the link member, so as to hold them together.
  • the tubular connector is also dimensioned to rotate freely, with the link member, in the channel 38.
  • the two segments could be joined by a tubular connector fitting around two male connectors.
  • the rotary connection 16 will permit the link member 36 to rotate about a rotary axis of rotation 33; the rotary motion is illustrated by arrow B (shown in Figure 15 ).
  • the hinge connection 34 permits the link member 36 to rotate about a hinge axis of rotation 35.
  • the movement of the link member about the hinge axis of rotation is illustrated by arrow A (shown in Figure 14 ).
  • the rotary axis of rotation is offset 37 above the hinge axis of rotation.
  • the link member 36 connects the rotary connection 16 and the hinge connection 34 to the load transfer belt 15.
  • the load transfer belt has a panel, the perimeter of which is defined by dotted line 55, which also defines the edge profile of the belt.
  • the panel is padded, for example with foam, to improve comfort of the user.
  • the belt has a central axis 53 and a length L.
  • the length L is measured from a distance of a fastener (not shown) at one end of the belt to the fastener at the other end of the belt.
  • the position of a fastener is preferably adjustable.
  • the fastener may be attached to the load transfer belt using an adjustable strap. Accordingly, the length of the belt is variable.
  • Connected to the panel is a series of load transfer elements 54. In this example there are four load transfer elements connected to either side of the link member 36, but in other examples there could be a different number of load transfer elements on either side of the link member, and/or there could be two, three or five or more load transfer elements on each side of the link member.
  • the load transfer elements are each formed separately so as to form a series of joined but distinct load transfer elements.
  • the joint 57 (only one joint is numbered in Figure 16 for clarity) between each load transfer element is rotational.
  • the series of connected load transfer elements forming a load transfer belt having articulated sections.
  • each load transfer element 54 is "u" or "n” shaped, joined alternately to form a serpentine configuration.
  • the serpentine configuration is formed by one end of an n-shaped load transfer element 54a being joined to one end of a u-shaped load transfer element 54b.
  • the joint is a pivot joint, formed by a male connector 56 being received by a female connector 58.
  • the serpentine configuration can be extended by joining more u-shaped and n-shaped load transfer elements to the series of load transfer elements.
  • the pivot joint formed by the male and female connectors of the u- and n-shaped load transfer elements is a rotational joint.
  • the pivot joint is formed by two male connectors and a sleeve positioned over both male connectors.
  • the arrangement of the load transfer elements 54 along the length L of the load transfer belt 15 is such that the load transfer elements have sections in a direction T transverse to the length of the belt.
  • the transverse direction is perpendicular to the length of the belt.
  • transverse does not have to be perpendicular; a transverse direction is a direction that crosses the length direction.
  • the legs of the "n" and the arms of the "u" are transverse to the length of the belt.
  • the load transfer elements are formed such that when joined to adjacent load transfer elements, the transverse sections of the load transfer elements are equally spaced.
  • the pivot joint joining the load transfer elements defines an axis of rotation which is also transverse to the length of the belt.
  • the male and female connections (or alternatively the two male connections) at the ends of the load transfer elements means that the axis of rotation is coincident with the transverse sections of the load transfer elements.
  • the load transfer elements 54 can be dimensioned and arranged such that the load transfer elements towards the centre of the load transfer belt extend a greater distance in the transverse direction T than the load transfer elements at the ends of the belt. This construction improves comfort of the user.
  • Each load transfer element 54 may be made from a metal tube, or they may be formed from plastic, optionally reinforced plastic.
  • a link member 36 links the load transfer belt 15 to the rotary connection 16 and hinge connection 34.
  • the link member is linked to the load transfer belt using a joint between the link member and two load transfer elements 54.
  • the link member is made of two components which connect in the centre of the hinge connection. Each component of the link member extends to one side of the load transfer belt and joins to an n-shaped load transfer element.
  • the joint is a rotational joint formed by a male connector on the link member being received by a female connector of the n-shaped load transfer element.
  • a female connector of the link member can receive a male connector of the load transfer element.
  • a security panel 51 may be attached to the panel of the load transfer belt 15.
  • the security panel is shaped to closely resemble a portion of the edges of the link member 36.
  • the security panel is a trapezoid shape, the side edges of which follow the profile of the link member.
  • the close fit size of the security panel compared to the link member adds reinforcement to the link member to prevent the two components of the link member from separating.
  • the load transfer elements 54 can be secured to the panel of the load transfer belt 15 using loops, for example fabric loops, connected to the panel.
  • the load transfer elements 54 can be fitted through the loops.
  • the loop is positioned at the peak of the n-shaped load transfer elements and the bottom of the u-shaped load transfer elements. In this way the rotational joints joining the load transfer elements are easily accessible. Thus easy replacement or repair of the load transfer elements is permitted.
  • the loops can also be dimensioned to further secure the load transfer elements so as to prevent the elements separating.
  • the load transfer elements are fully covered by the panel, such that the panel prevents the elements from separating.
  • the shoulder straps 12 are placed over the user's shoulders and the load transfer belt 15 is positioned around the user's hips.
  • the shoulder straps transfer load from the rucksack 10 to the shoulders of the user, and the load transfer belt transfers load from the rucksack to the hips of the user.
  • the rotary and hinge connection are formed distinct from each other, such that when a person is walking the rotation of the belt is substantially about the rotary axis of rotation 33, and when a person is leaning forwards, the rotation of the belt is substantially about the hinge axis of rotation.
  • the movement of the belt 15 when a person is walking is a modified rocking motion that closely resembles the movement of the hips. This movement is produced by a combination of rotation about the rotary axis of rotation 33, the offset 37 of the connection of the link member to the rotary connection (in this case by the hinge connection), and the offset of the rotary connection from the centre 53 of the belt.
  • the load of the load carrying apparatus 10 (in this case a rucksack) is principally in the direction of the height of the user, which corresponds to the transverse direction T on the belt.
  • the arrangement of the load transfer elements 54 in the same direction as the principal loading direction effectively transfers load from the rucksack to the load transfer belt 15.
  • the rotational joints 57 provide flexibility along the length L of the load transfer belt, which permits the belt to encircle the user's hips, but the flexibility is achieved without reduced stiffness of the load transfer elements, which avoids any compromise of load transfer.
  • the flexibility provided by the rotational joints permits the belt to comfortably fit a wide range of pelvis sizes, and allows the belt to move with the hips of the user.
  • the serpentine configuration of the load transfer elements 54 is beneficial because it is lightweight and easy to construct. Furthermore, it easily permits even spacing of the load transfer elements in sections of the load transfer belt 15, which leads to an even distribution of load around the belt in both the posterior to anterior regions of the hips; further contributing to increased comfort of the user.

Landscapes

  • Portable Outdoor Equipment (AREA)
  • Rehabilitation Tools (AREA)
  • Purses, Travelling Bags, Baskets, Or Suitcases (AREA)

Claims (7)

  1. Lastaufnahmevorrichtung, die Folgendes aufweist:
    einen Rahmen (18);
    einen Lastübertragungsgurt (15) zum Übertragen einer Last von der Lastaufnahmevorrichtung auf die Hüften eines Benutzers,
    eine Drehverbindung (16) zwischen dem Lastübertragungsgurt (15) und dem Rahmen (18); und
    eine Gelenkverbindung (34) zwischen dem Lastübertragungsgurt und dem Rahmen;
    wobei die Drehverbindung (16) es dem Gurt gestattet, um eine Drehrotationsachse (33) gedreht zu werden, und die Gelenkverbindung es dem Gurt (15) gestattet, um eine Gelenkrotationsachse gedreht zu werden, wobei die Gelenkrotationsachse (35) senkrecht auf die Drehrotationsachse steht;
    dadurch gekennzeichnet, dass die Drehverbindung ein Gehäuse und eine Nabe, die in einem Hohlraum des Gehäuses angeordnet ist, aufweist, und wobei die Gelenkverbindung ein auf der Nabe angeordnetes Gelenk ist.
  2. Lastaufnahmevorrichtung nach Anspruch 1, wobei die Drehrotationsachse (33) gegenüber der Gelenkrotationsachse (35) nach oben versetzt ist.
  3. Lastaufnahmevorrichtung nach Anspruch 1 oder 2, wobei die Drehrotationsachse gegenüber dem Mittelpunkt des Lastübertragungsgurts (15) nach oben versetzt ist.
  4. Lastaufnahmevorrichtung nach einem der vorangegangenen Ansprüche, ferner umfassend ein Verbindungselement (36), das den Lastübertragungsgurt (15) mit der Nabe (32) verbindet.
  5. Lastaufnahmevorrichtung nach Anspruch 4, wobei das Verbindungselement ein oder mehrere Stäbe ist und das Gelenk ein Kanal (38) ist, der dimensioniert ist, um das Verbindungselement (36) aufzunehmen.
  6. Lastaufnahmevorrichtung nach einem der vorangegangenen Ansprüche, wobei der Rahmen (18) an der Drehverbindung (16) zusammenläuft, um eine effiziente Lastübertragung von der Lastaufnahmevorrichtung zum Lastübertragungsgurt (15) zu gestatten.
  7. Lastaufnahmevorrichtung (10) nach einem der vorangegangenen Ansprüche, wobei der Lastübertragungsgurt (15) Folgendes aufweist:
    eine Vielzahl von Lastübertragungselementen (54), die entlang der Länge des Gurts (15) angeordnet sind;
    wobei jedes Lastübertragungselement (54) durch ein Drehgelenk (57) mit mindestens einem benachbarten Lastübertragungselement verbunden ist, wobei das Drehgelenk eine Rotationsachse quer zur Länge des Gurts aufweist, um zu gestatten, dass der Lastübertragungsgurt (15) den Körper eines Benutzers umgibt.
EP12167926.0A 2011-05-13 2012-05-14 Lastträgervorrichtung Not-in-force EP2522251B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1108120.5A GB2490744B (en) 2011-05-13 2011-05-13 Load carrying apparatus

Publications (2)

Publication Number Publication Date
EP2522251A1 EP2522251A1 (de) 2012-11-14
EP2522251B1 true EP2522251B1 (de) 2017-03-29

Family

ID=44260558

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12167926.0A Not-in-force EP2522251B1 (de) 2011-05-13 2012-05-14 Lastträgervorrichtung

Country Status (4)

Country Link
EP (1) EP2522251B1 (de)
JP (1) JP6096422B2 (de)
CN (1) CN102771994B (de)
GB (1) GB2490744B (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6829122B2 (ja) * 2017-03-22 2021-02-10 株式会社ミノウラ リュックサック
ES2895698T3 (es) * 2017-09-27 2022-02-22 Globe Jiangsu Co Ltd Conjunto de portador pivotante para un arnés

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5836489A (en) * 1996-12-09 1998-11-17 Johnson Worldwide Associates, Inc. Belt assembly for a load carrying system
CN100594820C (zh) * 2003-03-14 2010-03-24 北方表面装饰公司 背包悬挂系统
US7337935B1 (en) * 2003-06-09 2008-03-04 Glanville James J Golf bag coupling system
JP4322923B2 (ja) * 2003-11-19 2009-09-02 サンチェオング カンパニー リミテッド バックパック
KR200353606Y1 (ko) * 2003-11-19 2004-06-22 주식회사 산청 공기통 백마운트용 백팩
US20080035686A1 (en) * 2006-04-14 2008-02-14 Gregory Wayne B Backpack pivot system
US8844781B2 (en) 2006-07-19 2014-09-30 Arc'teryx Equipment Inc. Adjustable positioning mechanism and a bag or pack, such as a backpack or other article, having such mechanism
US8006877B2 (en) * 2007-04-18 2011-08-30 Sperian Respiratory Protection Usa, Llc Backpack for self contained breathing apparatus
EP2172126A1 (de) * 2008-10-01 2010-04-07 Nederlandse Organisatie voor toegepast-natuurwetenschappelijk Onderzoek TNO Rucksack-System
US8714424B2 (en) 2009-03-24 2014-05-06 Black Diamond Equipment Ltd. Carrying device waist belt system

Also Published As

Publication number Publication date
GB2490744A (en) 2012-11-14
CN102771994B (zh) 2016-08-10
GB2490744B (en) 2017-02-01
JP6096422B2 (ja) 2017-03-15
JP2013006017A (ja) 2013-01-10
EP2522251A1 (de) 2012-11-14
GB201108120D0 (en) 2011-06-29
CN102771994A (zh) 2012-11-14

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