Abstract
A rivet sleeve of a blind rivet for connecting at least one die-head-side component to a closing-head-side component, the rivet sleeve having a sleeve shank including a sleeve shank end. An elastic sleeve die head is arranged at an end of the sleeve shank opposite the sleeve shank end for ensuring a minimum clamping force between at least the die-head-side component and the closing-head-side component in a closed state of the blind rivet, the sleeve die head. The sleeve die head extend around the sleeve shank radially around the extension axis of the sleeve shank. At least two recesses spaced a distance apart in the lateral surface of the sleeve die head.
Claims
1. A rivet sleeve of a blind rivet to connect at least one die-head-side component to a closing-head-side component, the rivet sleeve comprising: a sleeve shank having a sleeve shank end, the sleeve shank end of the rivet sleeve being deformed into a closing head in a closed state of the blind rivet, the closing head being arranged on an upper side of the closing-head-side component; an elastic sleeve die head arranged on an end of the sleeve shank opposite the sleeve shank end for ensuring a minimum clamping force between at least the die-head-side component and the closing-head-side component in the closed state of the blind rivet, wherein the sleeve die head is arranged on an upper side of the die-head-side component opposite the upper side of the closing-head-side component, wherein the sleeve die head extends around the sleeve shank radially around the extension axis of the sleeve shank, and wherein the sleeve die head has at least two recesses spaced a distance apart in the lateral surface of the sleeve die head.
2. The rivet sleeve according to claim 1, wherein the sleeve die head is provided with a rotationally symmetrical design.
3. The rivet sleeve according to claim 1, wherein the sleeve die head has an inner lateral surface facing the sleeve shank and an outer lateral surface facing away from the sleeve shank, the at least two recesses being formed in the inner lateral surface and/or in the outer lateral surface of the sleeve die head.
4. The rivet sleeve according to claim 1, wherein the at least two recesses are arranged radially around the extension axis of the sleeve shank at equal angular distances from each other.
5. The rivet sleeve according to claim 1, wherein the at least two recesses are equidistant from the extension axis of the sleeve shank.
6. The rivet sleeve according to claim 1, wherein at least one recess of the at least two recesses has an indentation or a calotte-like indentation in the sleeve die head.
7. The rivet sleeve according to claim 1, wherein at least one recess of the at least two recesses has an opening or a slit in the sleeve die head.
8. The rivet sleeve according to claim 1, wherein the at least two recesses are formed in a region of at least one die head contact section of the sleeve die head for arrangement on the upper side of the die-head-side component with respect to the sleeve shank or wherein the at least two recesses are formed in a region between the at least one die head contact section of the sleeve die head and the sleeve shank.
9. The rivet sleeve according to claim 1, wherein at least two recesses spaced a distance apart are formed in the lateral surface of the sleeve shank on the sleeve shank end or in the outer lateral surface and/or in the inner lateral surface of the sleeve shank.
10. A blind rivet to connect at least one die-head-side component to a closing-head-side component, the blind rivet comprising: a rivet sleeve according to claim 1; and a rivet mandrel that is at least partially arranged in the rivet sleeve and includes a mandrel shank and a mandrel head at one end of the mandrel shank, the rivet mandrel being designed to deform the sleeve shank end of the rivet sleeve into the closing head during a movement of the rivet mandrel in a direction from the sleeve shank end to the sleeve die head of the rivet sleeve.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0029] The present invention will become more fully understood from the detailed description given hereinbelow and the accompanying drawings which are given by way of illustration only, and thus, are not limitive of the present invention, and wherein:
[0030] FIG. 1 shows an example of a blind rivet according to the invention or a rivet sleeve in a non-closed state in a vertical sectional view;
[0031] FIG. 2 shows the rivet sleeve from FIG. 1 in a view from below;
[0032] FIG. 3 shows the blind rivet according to the invention or the rivet sleeve from FIG. 1 in the closed state in a vertical sectional view;
[0033] FIG. 4 shows an example of a rivet sleeve according to the invention in a view from below; and
[0034] FIG. 5 shows an example of a blind rivet according to the invention or a rivet sleeve in a non-closed state in a vertical sectional view.
DETAILED DESCRIPTION
[0035] FIGS. 1 through 3 show an example of a blind rivet 100, including a rivet sleeve 10 according to the invention and a rivet mandrel 50. In FIG. 1 and FIG. 3, blind rivet 100 is illustrated in a vertical sectional view in each case (cf. section A-A in FIG. 2). FIG. 2 shows rivet sleeve 10 of this specific embodiment in a view from below.
[0036] FIG. 1 discloses rivet sleeve 10 according to the invention in a non-set or non-closed state. In this case, rivet sleeve 10 comprises a sleeve shank 30, which has a sleeve shank end 38 and an elastic sleeve die head 20 arranged on the end of sleeve shank 30 opposite sleeve shank end 38 for ensuring a minimum clamping force F between a die-head-side component 110 and a closing-head-side component 120 in a closed state SZ of blind rivet 100 (cf. FIG. 3). Sleeve die head 20 has a radially circumferential die head contact section 26, which is arranged on an upper side 112 of die-head-side component 110 opposite upper side 122 of closing-head-side component 120 in closed state SZ (cf. FIG. 3). Sleeve shank 30 guides a rivet mandrel 50 along extension axis EA of sleeve shank 30, rivet mandrel 50 comprising a mandrel shank 55 and a mandrel head 56. Moreover, the sleeve shank 30 has an essentially constant wall thickness or material thickness and is provided with a tubular design. Sleeve shank end 38 of sleeve shank 30, for example a portion of sleeve shank 30, on sleeve shank end 38 may be deformed into closing head 40 (see FIG. 3). Sleeve die head 20 extends around sleeve shank 30 radially around extension axis EA of sleeve shank 30. In this specific embodiment, sleeve die head 20 is provided with an umbrella-shaped design and has an inner lateral surface 22 and an outer lateral surface 23, recesses 24g and 24c of recesses 24a through 24h (cf. FIG. 2), which are spaced a distance apart in inner lateral surface 22 of lateral surface 21 of sleeve die head 20, being visible. Recesses 24a through 24h in this case are calotte-shaped, i.e. calotte-like, indentations.
[0037] As is apparent from FIG. 2, in this exemplary embodiment, sleeve die head 20 of rivet sleeve 10 has eight calotte-shaped indentations as recesses 24a through 24h, sleeve die head 20 also being provided with a rotationally symmetrical design. The calotte-shaped indentations are arranged radially around extension axis EA of sleeve shank 30 at the same angular distances α.sub.1 through α.sub.8 (only α.sub.1, α.sub.2 and α.sub.8 being shown here for the sake of clarity), recesses 24a through 24h furthermore being equidistant from extension axis EA of sleeve shank 30 in each case. As a result, a flux of force in sleeve die head 20 may be particularly advantageous, and blind rivet 100 or rivet sleeve 10 may be particularly stable in closed state SZ (cf. FIG. 3).
[0038] FIG. 3 discloses rivet sleeve 10 according to the invention in a set or closed state, i.e., in closed state SZ. In closed state SZ of blind rivet 100, sleeve shank end 38 of rivet sleeve 10 is deformed into closing head 40, closing head 40 being arranged on an upper side 122 of closing-head-side component 120. Mandrel head 56 of rivet mandrel 50 has deformed sleeve shank end 38 of rivet sleeve 10 (cf. FIG. 1) into closing head 40 during the movement of rivet mandrel 50 in a direction from sleeve shank end 38 to sleeve die head 20 of rivet sleeve 10. Mandrel shank 55 is broken off mandrel head 56, and mandrel head 56 closes sleeve shank 30. Elastic sleeve die head 20 arranged on the end of sleeve shank 30 opposite sleeve shank end 38 also ensures minimum clamping force F between die-head-side component 110 and closing-head-side component 120 in closed state SZ of blind rivet 100.
[0039] FIG. 4 shows a further example of a rivet sleeve 10 in a view from below. Sleeve die head 20 is provided with an umbrella-shaped design (cf. FIG. 1) and has an inner lateral surface 22 and a die head contact section 26 running radially around an extension axis EA of sleeve shank 30 for arrangement on an upper side 112 of a die-head-side component 110. Sleeve die head 20 has nine recesses 24a through 24i, the latter being designed as openings, for example as slits. Recesses 24a through 24i designed as openings each break through sleeve die head 20. The openings are also arranged radially around extension axis EA of sleeve shank 30 at the same angular distances α.sub.1 through α.sub.9 (only α.sub.1 α.sub.02 and α.sub.9 being shown here for the sake of clarity), recesses 24a through 24i furthermore being each equidistant from extension axis EA of sleeve shank 30. Recesses 24a through 24i also each extend in a direction radially away from sleeve shank 30. As illustrated in FIG. 4, it is conceivable that the openings have, for example, a varying opening width. A blind rivet 100 or a rivet sleeve 10 may thus be particularly stable. In FIG. 4, recesses 24a through 24i are furthermore formed in a region between die head contact section 26 of sleeve die head 20 and sleeve shank 30, recesses 24a through 24i each being spaced a distance apart from sleeve shank 30. It would also be conceivable that recesses 24a through 24i are each formed from die head contact section 26 in the direction of sleeve shank 30, i.e., particular recesses 24a through 24i would also be formed in die head contact section 26.
[0040] FIG. 5 shows a further example of a blind rivet 100 or a rivet sleeve 10 in a vertical sectional view. Blind rivet 100 essentially has the same structure as blind rivet 100 from FIG. 1. In addition, at least two recesses 34a and 34b spaced a distance apart are formed in outer lateral surface 33 on sleeve shank end 38. Sleeve shank end 38 of rivet sleeve 10 may thus have a particularly stable closing head 40 in closed state SZ of blind rivet 100. As a result, the flux of force in blind rivet 100 or rivet sleeve 10, for example sleeve die head 20, may also be particularly advantageous, and blind rivet 100 or rivet sleeve 10 may be particularly stable in closed state SZ. In FIG. 5, recesses 34a and 34b are each designed as a calotte-like indentation.
[0041] The invention being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications as would be obvious to one skilled in the art are to be included within the scope of the following claims.
