Securing device
10036202 ยท 2018-07-31
Assignee
Inventors
Cpc classification
A62B35/0081
HUMAN NECESSITIES
International classification
A62B35/00
HUMAN NECESSITIES
Abstract
A fall arrest device for securing a climber to a cable in a manner that prevents the climber from falling. The device can run along an elongate securing cable as the climber ascends and descends during use. The device has a base body having a guide element and a receiving body having longitudinal axis designed to receive the cable therebetween, a housing fastened movably on the base body, and a securing element having a first securing bolt. The securing element is fastened rotatably on the base body and the housing in order to clamp the cable against the receiving body to arrest the climber during a fall.
Claims
1. A securing device configured to be secured together with a person, and for running along an elongated cord being at least one of a cable, a belt, and a retaining rod, said securing device comprising: a base body having a pivot pin; a roller arranged about the pivot pin; a receiving body, disposed on the base body such that the elongated cord is guidable between the receiving body and the roller; a housing connected to the pivot pin with a biasing element, the housing having a first guide groove receiving the pivot pin such that the housing is configured to translate with respect to, and pivot about, said pivot pin; and a securing element having a first securing bolt and fastened rotatably about a first axis of rotation with respect to the base body, wherein the housing at least partially surrounds the base body and the securing element, the housing receives the first securing bolt in a second guide groove of the housing, the first securing bolt is configured to translate with respect to the second guide groove, and the housing is fastened to the base body about a second axis of rotation defined by the pivot pin; wherein during a first rotation of the housing relative to the base body in a first direction, the securing element is rotatable about the first axis of rotation such that as a result of the first rotation, an end of the securing element is movable in the first direction toward the receiving body so that the elongated cord is configured to be clamped between the receiving body and the securing element.
2. The securing device according to claim 1, wherein the securing element is coupled to the housing such that during the first rotation of the housing about the second axis of rotation relative to the base body, a first rotation of the securing element about the first axis of rotation is creatable relative to the base body.
3. The securing device according to claim 1, wherein the pivot pin is coupled to the first guide groove such that the housing is fastened displaceably relative to the base body.
4. The securing device according to claim 3, wherein the first guide groove is configured such that during a displacement of the housing relative to the base body the first securing bolt is movable by the displacement of the housing such that the securing element is rotatable about the first axis of rotation.
5. The securing device according to claim 4, wherein the securing element has a second securing bolt, wherein the housing forms an extension of the second guide groove, which is configured at an angle to the second guide groove, wherein the extension of the second guide groove is configured such that the second securing bolt is received by the extension of the second guide groove such that during the displacement of the housing relative to the base body the securing element is rotatable about the first axis of rotation.
6. The securing device according to claim 1, further comprising: a spring element, wherein, in an initial position of the base body relative to the housing, the securing element is configured for allowing a movement of the elongated cord along the receiving body, wherein the spring element is coupled to the base body and the housing such that by a spring force of the spring element the housing is aligned relative to the base body in the initial position.
7. The securing device according to claim 1, further comprising: a brake lever which is fastened rotatably on the base body, wherein a coupling region for coupling on the person to be secured is formed at a first end of the brake lever and a clamping region is formed at a second end of the brake lever, which is formed opposite the first end, wherein the brake lever is configured for being disposed rotatably on the base body such that the clamping region is movable in a direction to the receiving body such that a clamping of the elongated cord is creatable between the receiving body and the brake lever.
8. The securing device according to claim 1, further comprising: wherein the receiving body has a groove, wherein the receiving body is configured for being disposed on the base body such that the elongated cord is guidable in the groove between the receiving body and the roller.
9. The securing device according to claim 8, wherein the groove has a V-shaped cross-section.
10. The securing device according claim 1, wherein the roller has a further groove having a further V-shaped cross-section or having a U-shaped cross-section; and wherein the elongated cord is guidable in the further groove.
11. The securing device according to claim 1, wherein the receiving body has a fluted surface.
12. The securing device according to claim 1, wherein the receiving body is disposed rotatably about its longitudinal axis on the base body such that the receiving body is rotatable from a closed position into an open position; and wherein in the open position the elongated cord is insertable between the receiving body and the roller and in the closed position a withdrawal of the elongated cord between the receiving body and the roller is preventable.
13. The securing device according to claim 12, wherein the base body comprises a coupling element, wherein the coupling element couples the receiving body to the base body such that the receiving body is fastened rotatably between the open position and the closed position on the base body.
14. The securing device according to claim 13, wherein a coupling groove is formed in the coupling element, wherein the receiving body has a coupling bolt which is coupled in the coupling groove, wherein the coupling groove in the coupling element is formed such that the coupling bolt is guided along the coupling groove during rotation of the receiving body about the longitudinal axis.
15. The securing device according to claim 14, wherein the coupling groove further has a helical course about the longitudinal axis so that during application of a force on the receiving body along the longitudinal axis the receiving body is movable in the longitudinal direction and at the same time the receiving body is rotatable about the longitudinal axis.
16. The securing device according to claim 12, wherein a first direction of rotation describes a rotation of the receiving body from the open position into the closed position.
17. The securing device according to claim 1, further comprising: a securing flap which is disposed rotatably on the base body such that a centre of gravity of the securing flap is spaced apart from a third axis of rotation of the securing flap about the base body so that a gravity-based rotation of the securing flap is providable based on an alignment of the base body, wherein the securing flap is disposed rotatably on the base body such that in an incorrect position of the base body relative to an elongated part the securing flap is rotatable into a locking position in which an insertion of the elongated cord between the receiving body and the roller is blocked.
18. A method for securing a person against falling, the method comprising the steps of: providing a securing device, said securing device having a base body having a pivot pin; a roller arranged about the pivot pin; a receiving body, disposed on the base body such that the elongated cord is guidable between the receiving body and the roller; a housing connected to the pivot pin with a biasing element, the housing having a first guide groove receiving the pivot pin such that the housing is configured to translate with respect to, and pivot about, said pivot pin; and a securing element having a first securing bolt and fastened rotatably about a first axis of rotation with respect to the base body, wherein the housing at least partially surrounds the base body and the securing element, the housing receives the first securing bolt in a second guide groove of the housing, the first securing bolt is configured to translate with respect to the second guide groove, and the housing is fastened to the base body about a second axis of rotation defined by the pivot pin; wherein during a first rotation of the housing relative to the base body in a first direction, the securing element is rotatable about the first axis of rotation such that as a result of the first rotation: an end of the securing element is movable in the first direction toward the receiving body so that the elongated cord is configured to be clamped between the receiving body and the securing element; attaching a safety lanyard to the securing device, wherein the safety lanyard is capable of attaching to a harness for a person; inserting the elongate cord between the receiving body and the roller; and moving the securing device with respect to a major length of the elongate cord.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) In the following for further explanation and for better understanding of the present invention exemplary embodiments are described in detail by reference to the appended figures. In the figures:
(2)
(3)
(4)
(5)
(6)
(7)
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(9)
DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS
(10) The same or similar components are provided with the same reference numbers in the figures. The diagrams in the figures are schematic and not to scale.
(11)
(12) A guide element 111, such as for example a rotatably mounted cable guide roller is disposed on a base body 110. Furthermore, a receiving body 120 is disposed on the base body 110. The receiving body 120 has a longitudinal axis 121. The receiving body 120 further has a groove 122. The groove 122 in particular has a longitudinal extension where the longitudinal extension runs parallel to the longitudinal axis 121 of the receiving body 120. The receiving body 120 can, as shown in
(13) The receiving body 120 can, as shown in
(14) The coupling element 116 can in this case form an open profile in cross-section and surround the receiving body 120 at least partially. The receiving body 120 can, for example have two coupling bolts 123, 123 which are coupled in corresponding coupling grooves 117, 117 of the coupling element 116.
(15) In an operating state of the securing device 100, as shown in
(16) Furthermore the securing device 100 has a securing element 140 with a first securing bolt 141. The securing element 140 is fastened rotatably about a first axis of rotation 142 on the base body 110, for example, by a pivot pin.
(17) Furthermore, a housing 130 is fastened rotatably and/or displaceably on the base body 110. The housing 130 can, for example, surround the base body 110 and the securing element 140 at least partially.
(18) The housing 130 is further coupled to the securing bolt 141 in such a manner that during a movement of the housing 130 relative to the base body 110 the securing element 140 is rotatable about the first axis of rotation 142 so that as a result of a first rotation 101 one end 143 of the securing element 140 is movable in the direction of the groove 122 so that the securing means 150 can be clamped between the receiving body 120 and the securing element 140.
(19)
(20)
(21) It should further be noted that for better clarity in
(22) The housing 130 can be fastened rotatably about a second axis of rotation 112 on the base body 110, for example, by a pivot pin 113 which is fastened on the base body 110. The first securing bolt 141 of the securing element 140 is in this case coupled to the housing 130 in such a manner that during a second rotation 102 of the housing 130 about the second axis of rotation 112 relative to the base body 110, the rotation 101 of the securing element 140 about the first axis of rotation 142 can be produced.
(23) A person to be secured can be coupled, for example, by the fastening region 118 (e.g. an eye) of the base body 110 to the securing device 100.
(24) A braking action or a clamping between the securing device 100 and the securing means 150 can be achieved, for example, manually by the securing element 140 whereby the person to be secured turns the housing 130, for example, about the second axis of rotation. This can be accomplished, for example by the person to be secured enclosing the housing 130 and the coupling element 116 with his hand and pressing together both elements (coupling element 116 and housing 130). As a result of the rotation of the housing 130 about the second axis of rotation 112, the first securing bolt 141 is moved along a tangential direction relative to the second axis of rotation 112. As a result of the movement of the securing bolt 141 along the tangential direction relative to the second axis of rotation 112, the first rotation 101 of the securing element 140 about the first axis of rotation 142 is produced. In other words, the securing element 140 thus rotates in the direction of the securing groove 122 of the receiving body 120.
(25) As shown in
(26) In particular
(27) Furthermore
(28) The possibility of the displacement 103 of the housing 130 relative to the base body 110 has the effect that the person to be secured can, for example, when viewed from above in
(29) In order to effect a smooth movement sequence between the housing 130 and the securing element 140 in particular when exerting the displacement 103 of the housing 130, a further second guide groove 133 can be formed in the housing 130. Furthermore, the securing element 140 can comprise the second securing bolt 144. As shown in
(30) During a displacement 103 of the housing 130 relative to the base body 110, a force is exerted in the direction of the displacement 103 and in particular a tangential component of the force relative to the first axis of rotations 142 on the second securing bolt 144. The securing bolt 144 is configured to be at a distance from the first axis of rotation 142. The displacement 103 of the housing 130 transmits a tangential component of the force relative to the first axis of rotation 142. As a result during displacement 103 of the housing 130 the securing element 140 rotates from the free-running position I (
(31) In the exemplary embodiment as shown in
(32) Furthermore a stop 115 can be disposed at a suitable point of the base body 110 in order to specifically limit the rotation of the securing element 140 or the rotation of the housing 130.
(33) Furthermore spring elements 114, 114 can be provided which couple the base body 110 and the housing 130. The spring elements 114, 114 in this case produce a spring force which is directed in such a manner that an initial position of the base body 110 relative to the housing 130 is set when the person to be secured exerts no force on the housing 130. In the initial position a movement of the securing means 150 in the groove 122 is possible.
(34)
(35) In addition, the securing device 100 in
(36) A retaining cable can be fastened, for example at the coupling region, which is fastened to a harness of the person to be secured. If the person to be secured ascends, for example, along a first direction (upwards viewed in
(37) In the event of a fall of the person to be secured along a second direction (downwards viewed in
(38)
(39) Since the centre of gravity S of the securing flap 310 is at a distance from the third axis of rotation, a gravity-based rotation of the securing flap 310 based on the alignment of the base body 110 is possible. In
(40) Assuming that the securing device 100 is twisted with respect to the alignment shown in
(41) Furthermore a further stop 301 can be provided on the base body which prevents an overrotation or an undesired displacement of the brake lever 320 or the securing flap 310.
(42)
(43) The coupling element 116 has an open profile in cross-section and at least partially surrounds the receiving body 120. The receiving body 120 is rotatable about the longitudinal axis 121 as the axis of rotation relative to the coupling element 116. The receiving body 120 for example has a coupling bolt 123 which is guided in a coupling groove 117 (not shown in
(44) Furthermore, in
(45) In particular the base body 110 is configured with two plate-shaped base elements 411, 412. The first base element 411 and the second base element 412 are formed at a distance from one another and rigidly connected to one another by connecting elements (not shown) so that a cavity is formed between the first base element 411 and the second base element 412. The bolts or pivot pins 113 described can be fastened in the first base element 411 and the second base element 412 and run through the cavity. Thus, a more stable mounting of the bolt or pivot pin is provided since these are fastened to the base body 110 in each case at two fastening points. The housing 130 is, for example, fastened to the pivot pin 113 where the pivot pin 113 is fastened to the first base element 411 and the second base element 412.
(46) The groove 122 is, for example, formed with a V-shaped profile shape 401 as shown in
(47) As shown in
(48)
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(50) A further exemplary embodiment of the securing device 100 is shown in
(51) For this purpose, for example, the coupling element 116 has two coupling grooves 117, 117. The receiving body 120 has two corresponding coupling bolts 123, 123 which are each coupled in the corresponding coupling grooves 117, 117. The coupling grooves 117, 117 have a helical profile or the profile of a helical line about the longitudinal axis 121.
(52)
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(54) Furthermore, a further spring element can be provided between the coupling element 116 or the base body 110 and the receiving body 120, where the further spring element with its spring force forces the receiving body 120 against the rotation 701 of the receiving body 120 and/or acts against the force F along the longitudinal axis 121 in order to force the receiving body 120 into the closed position according to
(55)
(56) In particular the receiving body 120 comprises a first receiving element 821 and a second receiving element 822. The first and the second receiving element 821, 822 each comprise a first and a second part of the groove. Furthermore the receiving elements 821, 822 are rotatable independently of one another about the axis of rotation 821.
(57) Furthermore, for example, the coupling element 116 has the two coupling grooves 117, 117. The first receiving element 821 comprises the coupling bolt 123 and the second receiving element 822 comprises the coupling bolt 123. The coupling bolts 117, 117 are each coupled in the corresponding coupling grooves 117, 117. The coupling grooves 117, 117 have an opposed helical profile. In other words, the second coupling groove 117 (or its longitudinal extension) is disposed twisted by approximately 90 degrees with respect to the first coupling groove 117 (or its longitudinal extension) (see
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(60) Here, for example, a first force F1 is applied to the first receiving element 821 and a second force F2, which is opposite to the first force F1, is applied to the second receiving element 822. As a result of the opposite helical profiles of the coupling grooves 117, 117, the receiving elements 821, 822 rotate about the same direction of rotation 701 about the longitudinal axis 121 despite different force directions of the forces F1, F2.
(61) For turning the first receiving element 821 and the second receiving element 822 into the open position, the first receiving element 821 and the second receiving element 822 must be (simultaneously) compressed. As a result of the coupling grooves 117, 117, the receiving elements 821, 822 rotate into the open position when these are compressed.
(62) It is thus prevented that in the event that one of the receiving elements 821, 822 is unintentionally rotated or pressed, the securing means 150 can be removed since the other non-twisted receiving element 821, 822 still remains in the closed position.
(63) Furthermore the first spring element can be disposed between the first receiving element 821 and the second receiving element 822 where the further spring element with its spring force presses the first receiving element 821 and the second receiving element 822 apart in order to force the first receiving element 821 and the second receiving element 822 into the closed position. It is thus prevented that the first receiving element 821 and the second receiving element 822 are moved independently from the closed position into the open position, i.e. without application of a force F1 or F2.
(64)
(65) Furthermore the pivot pin 113 is shown which on the one hand is coupled to the base body 110 and on the other hand is coupled to the housing 130 in the first guide groove 131. The housing 130 further comprises the second guide groove 132 and the further second guide groove 133 disposed at right angles to the second guide groove 132. The first securing bolt 141 is coupled in the second guide groove 132 and the second securing bolt 144 is coupled in the further second guide groove 133. The securing element 140 is shown in the free-running position I in
(66) The receiving body 120 is rotatably coupled via the coupling bolts 123, 123 in corresponding coupling grooves 117, 117 (not shown in
(67) In addition, it should be pointed out that comprising does not exclude other elements or steps and a or one does not exclude a plurality. It should further be noted that features or steps which are described by reference to one of the above exemplary embodiments can also be used in combination with other features or steps or other exemplary embodiments described above. Reference numbers in the claims should not be seen as a restriction.
REFERENCE LIST
(68) 100 Securing device 101 First rotation of the securing element 102 Second rotation of the housing 103 Displacement of the housing relative to the base body 110 Base body 111 Guide element 112 Second axis of rotation 113 Pivot pin 114 Spring element 115 Stop 116 Coupling element 117 Coupling groove 118 Fastening region 120 Receiving body 121 Longitudinal axis 122 Groove 123 Coupling bolt 130 Housing 131 First guide groove 132 Second guide groove 133 Further second guide groove 140 Securing element 141 First securing bolt 142 First axis of rotation 143 End of securing element 144 Second securing bolt 150 Securing means 301 Further stop 302 Further pivot pin 303 Insertion position 304 Locking position 310 Securing flap 320 Brake lever 321 Fastening eye 401 V-shaped profile shape 411 First base element 412 Second base element 701 Rotation of the receiving body 821 First receiving element 822 Second receiving element 801 Retaining cable I Free-running position II Clamping position F Force on receiving body S Centre of gravity of securing flap d Distance between receiving body and base body