Protective covering

Abstract

A protective covering for a shaft output of a transfer gearbox, comprising a solid, inelastic protective covering body, wherein the protective covering body has substantially the form of a frustoconical casing in order to surround a shaft in the region of the shaft output, having a first opening at a first axial end and a second opening at a second axial end, situated opposite from the first end, of the protective covering body, wherein the first opening is larger than the second opening, wherein the second opening is formed to surround the shaft, wherein, in the region of the first opening, a flange portion, lying at the top in the installed position, of the protective covering body is formed to be fastened to a housing of the transfer gearbox, wherein, in the region of the first opening, a portion, lying at the bottom in the installed position, of the protective covering body is formed to provide an outflow opening when the flange portion is fastened to the housing of the transfer gearbox.

Claims

1. A protective covering for a shaft at a shaft output of a transfer gearbox, the protective covering comprising a solid, inelastic protective covering body, wherein the protective covering body has a substantially frustoconical shape in order to surround the shaft in a region of the shaft output, the protective covering body having a first opening at a first axial end of the protective covering body and a second opening at a second axial end of the protective covering body situated opposite the first axial end, wherein the first opening is larger than the second opening, wherein the second opening is formed to surround the shaft, wherein a top of the protective covering body in a region of the first opening includes a flange portion configured to be fastened to a housing of the transfer gearbox in an installed position, wherein a bottom of the protective covering body in the region of the first opening is formed such that when the flange portion is fastened to the housing of the transfer gearbox in the installed position, a gap exists between the protective covering body and the housing of the transfer gearbox such that the gap forms an outflow opening.

2. The protective covering according to claim 1, wherein in a region of the second opening, a peripheral portion of the protective covering body is formed such that the peripheral portion surrounds the shaft in a non-sealing manner, such that an annular gap is formed between the peripheral portion of the protective covering body and the shaft around a full periphery of the peripheral portion of the protective covering body.

3. The protective covering according to claim 1, wherein the protective covering body is comprised of two parts being clip-fastened to one another.

4. The protective covering according to claim 1, wherein the protective covering body comprises an upper protective covering body part which forms the flange portion at the top of the protective covering body in the installed position, and wherein the protective covering body further comprises a lower protective covering body part at the bottom of the protective covering body in the installed position which provides the outflow opening when the flange portion is fastened to the housing of the transfer gearbox.

5. A transfer gearbox, comprising a shaft at a shaft output of the transfer gearbox, and a protective covering body extending between a first opening and a second opening opposite the first opening, wherein the first and second openings surround the shaft, wherein the protective covering body includes a flange portion at a top of the protective covering body at a region of the first opening, the flange portion configured to be fastened to a housing of the transfer gearbox when in an installed position, wherein a bottom of the protective covering body at the region of the first opening is configured to define a gap between the protective covering body and the housing of the transfer gearbox when the protective covering body is in the installed position such that the gap forms an outflow opening.

6. The transfer gearbox according to claim 5, wherein the flange portion of the protective covering body is adhesively bonded to the housing of the transfer gearbox.

7. The transfer gearbox according to claim 5, wherein in a region of the second opening, a peripheral portion of the protective covering body surrounds the shaft in a non-sealing manner, such that an annular gap is formed between the peripheral portion of the protective covering body and the shaft around a full periphery of the protective covering body between the peripheral portion of the protective covering body and the shaft.

8. The transfer gearbox according to claim 5, wherein a centrifugal disc is fastened to the shaft within the protective covering body.

9. A protective covering for covering a shaft at a shaft output of a transfer gearbox, comprising: a solid, inelastic protective covering body having a substantially frustoconical shape and configured to surround the shaft in a region of the shaft output; the protective covering body extending along an axis between a first opening at a first axial end and a second opening at a second axial end opposite the first axial end, wherein the first opening is larger than the second opening; the protective covering body including a flange portion extending radially relative to the axis at a top of the protective covering body at a region of the first opening for being fastened to a housing of the transfer gearbox in an installed position; and a portion of a bottom of the protective covering body at the region of the first opening being formed such that when the flange portion is fastened to the housing of the transfer gearbox a gap is defined between the protective covering body and the housing of the transfer gearbox such that the gap forms an outflow opening.

10. The protective covering as set forth in claim 9, wherein a peripheral portion of the protective covering body is formed in a region of the second opening such that the peripheral portion surrounds the shaft with an annular gap formed between the peripheral portion and the shaft around a full periphery of the shaft such that the peripheral portion surrounds the shaft in a non-sealing manner.

11. The protective covering as set forth in claim 9, wherein the protective covering body is comprised of two parts that are clip-fastened to one another.

12. The protective covering according to claim 9, wherein the protective covering body comprises an upper protective covering body part which forms the flange portion at the top of the protective covering body in the installed position, and wherein the protective covering body further comprises a lower protective covering body part at the bottom of the protective covering body in the installed position which provides the outflow opening when the flange portion is fastened to the housing of the transfer gearbox.

13. The transfer gearbox according to claim 9, wherein the flange portion of the protective covering body is adhesively bonded to the housing of the transfer gearbox.

14. The transfer gearbox according to claim 9, wherein a centrifugal disc is fastened to the shaft within the protective covering body.

Description

DRAWINGS

(1) The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present disclosure.

(2) FIG. 1 is a sectional view of a protective covering according to the invention in the installed state with a shaft.

(3) FIG. 2 is a sectional view of a further protective covering according to the invention in the installed state with a shaft.

(4) FIG. 3 is a three-dimensional representation of a protective covering according to the invention in the installed state without a shaft.

(5) FIG. 4 is a sectional view of the protective covering according to the invention in the installed state without a shaft according to FIG. 3.

(6) FIG. 5 is a lateral representation of the protective covering according to the invention in the installed state without a shaft according to FIG. 3.

(7) FIG. 6 is a three-dimensional representation of a protective covering according to the invention according to FIG. 3, but during installation.

(8) FIG. 7 is a sectional view of the protective covering according to the invention during installation according to FIG. 6.

(9) FIG. 8 is a lateral representation of the protective covering according to the invention during installation according to FIG. 6.

DETAILED DESCRIPTION OF THE INVENTION

(10) FIG. 1 shows a transfer gearbox according to the invention, comprising a housing 6 of the transfer gearbox and a shaft 2 at a shaft output of the transfer gearbox as well as a protective covering according to the invention.

(11) The protective covering for the shaft output of the transfer gearbox comprises a solid, inelastic protective covering body 1, preferably made from plastic, which has substantially the form of a frustoconical casing in order to surround the shaft 2 in the region of the shaft output, having a larger first opening 3 at a first axial end and a smaller second opening 4 at a second axial end, situated opposite from the first end, of the protective covering body 1.

(12) The second opening 4 surrounds the shaft 2 in a non-sealing manner, such that a gap 8 is formed at least in certain portions between the peripheral portion of the protective covering body 1 and the shaft 2, preferably a gap 8 is formed around the full periphery between the peripheral portion of the protective covering body 1 and the shaft 2.

(13) In the region of the larger, first opening 3, lying at the top in the installed position, a flange portion 5 of the protective covering body 1 that is adhesively bonded to the housing 6 of the transfer gearbox is formed. In addition to a permanent adhesive bond of the flange portion 5, in this region the protective covering may be fastened to the housing 6, for example by means of double-sided adhesive tape, during assembly.

(14) In the region of the first opening 3, lying at the bottom in the installed position, a portion of the protective covering body 1 is formed such that, when the flange portion 5 is fastened to the housing 6 of the transfer gearbox, an outflow opening 7 in the form of a gap 9 is formed between the protective covering body 1 and the housing 6 of the transfer gearbox.

(15) As can be seen in the embodiment of the transfer gearbox in FIG. 2, within the protective covering body 1 a centrifugal disc 13 may be fastened to the shaft 2.

(16) FIG. 3 to FIG. 8 show that the protective covering body 1 may be of two-part form. FIG. 6 to FIG. 8 show the two parts of the protective covering body 1 during assembly, before they are connected to one another, and FIG. 3 to FIG. 5 show the protective covering after connection has taken place, such that the two parts of the protective covering body 1 are clip-fastened to one another by means of a clip connection 10.

(17) The protective covering body 1 comprises an upper protective covering body part 11, which forms the flange portion 5, lying at the top in the installed position, of the protective covering body 1, and comprises a lower protective covering body part 12, which forms that portion, lying at the bottom in the installed position, of the protective covering body 1 which provides the outflow opening 7 when the flange portion 5 is fastened to the housing 6 of the transfer gearbox. The upper protective covering body part 11 and the lower protective covering body part 12 are clip-fastened to one another by means of the clip connection 10.

(18) The protective covering may be centred, for example, via lugs distributed on the periphery of the transfer gearbox. It is possible for only the upper protective covering body part 11 to be fastened, in particular adhesively bonded, to the housing 6 of the transfer gearbox. The lower protective covering body part 12 may be fastened only to the upper protective covering body part 11. Towards the housing 6, a gap 9 may be easily formed as a result on the lower protective covering body part 12 as outflow opening 7.

LIST OF REFERENCE DESIGNATIONS

(19) 1 Protective covering body 2 Shaft 3 First opening 4 Second opening 5 Flange portion 6 Housing 7 Outflow opening 8 Gap 9 Gap 10 Clip connection 11 Upper protective covering body part 12 Lower protective covering body part 13 Centrifugal disc