초록 ▼

An attachment assembly includes an elongate channel element and a male fastening element including a shank to fasten the channel element to another structural element. The elongate channel element has a substantially flat bottom, sidewalls extending from the bottom substantially at right angles and

An attachment assembly includes an elongate channel element and a male fastening element including a shank to fasten the channel element to another structural element. The elongate channel element has a substantially flat bottom, sidewalls extending from the bottom substantially at right angles and an upper side opposite the bottom. The upper side of the channel element includes flanges which extend from the respective sidewalls towards each other and delimit between them a longitudinal slot extending over the length of the channel element. The bottom has an aperture formed in it for passing through the shank of the male fastening element. The male fastening element has a head that has a circular groove in the side where the shank is located. The groove in the head is engageable with a collar surrounding the aperture so as to mutually lock the head and the bottom in position at the aperture.

대표청구항 ▼

1. An attachment assembly comprising two elongate channel elements and at least one male fastening element comprising a shank to fasten the two elongate channel elements to one another, the two elongate channel elements each having a bottom, sidewalls extending from the bottom substantially at right

1. An attachment assembly comprising two elongate channel elements and at least one male fastening element comprising a shank to fasten the two elongate channel elements to one another, the two elongate channel elements each having a bottom, sidewalls extending from the bottom substantially at right angles and an upper side opposite the bottom, wherein the upper side of the two elongate channel elements comprises flanges which extend from respective sidewalls towards each other and which delimit between them a longitudinal slot extending over the length of the two elongate channel elements,wherein:each of the channel elements has a plurality of apertures formed in the bottom for passing through the shank of the at least one male fastening element,the bottom of each of the two elongate channel elements, at an inner side thereof has an upstanding collar portion extending at least partially around at an aperture of the plurality apertures and being monolithically formed with the bottom of the two elongate channel elements,a head of the at least one male fastening element has a circular groove in a side facing a corresponding inner side of the bottom and a nut has a circular groove in a side facing a corresponding inner side of the bottom,the two elongate channel elements are positioned with bottoms thereof back to back against each other, whereinat least one aperture of one of the two elongate channel elements is aligned with at least one aperture of another elongate channel element of the two elongate channel elements, and wherein the shank of the at least one male fastening element extends through the aligned apertures, wherein the head of the at least one male fastening element during mounting is moved towards the inner side of the bottom of one of the two elongate channel elements and receives the upstanding collar portion in the circular groove in the head, and wherein a nut cooperating with the shank during mounting is moved towards the inner side of the bottom of the other of the two elongate channel elements, and receives the upstanding collar portion in the circular groove in the nut so as to mutually lock the head and a corresponding bottom and the nut and a corresponding bottom in position at the at least one aperture. 2. The attachment assembly according to claim 1, wherein the head of the at least one male fastening element is a head integrally formed with the shank. 3. The attachment assembly according to claim 1, wherein the head is a nut. 4. The attachment assembly according to claim 1, wherein the at least one aperture is a round hole. 5. The attachment assembly according to claim 1, wherein the at least one aperture is an elongate hole with rounded end portions. 6. The attachment assembly according to claim 4, wherein the upstanding collar portion is a circular ring shaped collar. 7. The attachment assembly according to claim 5, wherein, adjacent at least one of the end portions of the elongate hole, the upstanding collar portion is arranged. 8. The attachment assembly according to claim 1, wherein the at least one aperture in the bottom has a closed contour, the at least one aperture having a first aperture portion with a diameter exceeding the diameter of the head of the at least one male fastening element, such that the head can be inserted through the first aperture portion, and a second aperture portion adjoining the first aperture portion, which second aperture portion has a smaller diameter which exceeds the diameter of the shank, but is smaller than the diameter of the head of the at least one male fastening element, and wherein the upstanding collar portion is arranged at the second aperture portion. 9. The attachment assembly according to claim 7, wherein the upstanding collar portion is shaped as a half circular ring segment. 10. An attachment assembly comprising two strut rails and at least one male fastening element comprising a shank to fasten the two strut rails to one another, the two strut rails each having a bottom, sidewalls extending from the bottom substantially at right angles and an upper side opposite the bottom, wherein the upper side of each of the two strut rails comprises flanges which extend from the respective sidewalls towards each other and which delimit a longitudinal slot extending over the length of the two strut rails,wherein:each of the two strut rails has a plurality of apertures formed in the bottom for passing through the shank of the at least one male fastening element, and the bottom of each of the strut rails, at an inner side thereof has an upstanding collar portion extending at least partially around at least one of the apertures and being monolithically formed with the bottom of the strut rail,a head of the at least one male fastening element has a circular groove in a side facing a corresponding inner side of the bottom and a nut has a circular groove in a side facing a corresponding inner side of the bottom,the strut rails are positioned with the bottoms thereof back to back against each other, wherein at least one aperture of one of the strut rails is aligned with at least one aperture of the other one of the strut rails, and wherein the shank of the at least one male fastening element extends through the aligned apertures, wherein the head of the at least one male fastening element during mounting is moved towards the inner side of the bottom of one of the strut rails and receives the upstanding collar portion in the circular groove in the head, and wherein a nut cooperating with the shank during mounting is moved towards the inner side of the bottom of another one of the strut rails and receives the upstanding collar portion in the circular groove in the nut so as to mutually lock the head and a corresponding bottom and the nut and a corresponding bottom in position at the at least one aperture.