KR100849879B1 - Sliding sleeve - Google Patents

Abstract

The present invention relates to a sliding sleeve (1) comprising a sleeve body (2) and a selector fork guide (3). The selector fork guide 3 is at least formed from a sheet in a non-cutting forming process and radially separated from the sleeve body 2 and fixed on the sleeve body 2 and having an angular cross section. One first ring 4.

Description

Sliding sleeve {SLIDING SLEEVE}

The present invention relates to a sliding sleeve having a sleeve body and a selector fork guide, wherein the selector fork guide in the sliding sleeve is made of a sheet in a non-cutting forming process and radially protrudes from the sleeve body. And at least one first ring fixed on the sleeve body.

Such sliding sleeves are described in German Patent Application Publication No. 198 206 54. Among the sliding sleeves described in this publication, the sliding sleeves produced by the deformation process, in particular including the sleeve guides, have emerged as highly desirable. The manufacturing cost of the sleeve is less than that of conventional sliding sleeves, which are produced mainly by cutting. The selector fork guide of the sliding sleeve is formed by one or two rings fixed radially around the outer circumference of the sleeve body and / or two cylindrical contact surfaces on the outer surface of the sleeve body. In the case of using one ring, a fork-shaped end of the selector fork each wraps the ring on the side. If two rings are used, the rings form a side of the groove spaced apart from each other and open radially outward. The ends of the selector forks are inserted into the grooves. Ends of the selector fork are adjacent to the cylindrical contact surface. In this case a relative movement is made between the ends of the selector fork guide and the contact surface of the sleeve body. The ends slide on the contact surface. As such, the contact surface must be formed with sufficient precision and good surface quality. Thus, in the sliding sleeve according to the prior art, the face is reworked in a cutting manner depending on the situation after assembling the ring on the sleeve body. Such a process raises the manufacturing cost of such a sliding sleeve, so that the benefits of cost savings described in the preamble become partially meaningless again.

The ring of the selector fork guide described in German Patent Application Publication No. 198 20 654 has a thick wall. This implementation partly disadvantages the weight of conventional sliding sleeves and the material consumption for producing said sleeves.

An object of the present invention is to manufacture a sliding sleeve which can avoid the above-mentioned disadvantages.

The object is an angular cross-sectional view, in accordance with the features of claim 1, having a first leg in which the longitudinally cut ring is bent radially from the sleeve body and a second leg being bent in the other direction from the first leg. It is solved by having One or two rings according to the invention with cross sections of each form are fixed on the sleeve body of the sliding sleeve. In this case one leg of the ring forms a contact surface for the end of the selector fork and / or is used as a reinforcing member. As such, the rings are thin walls, and thus can be manufactured in a light and material saving manner. A cylindrical contact surface is secured to the ring, in which case a generally elongated and, in some cases, dimensionally calibrated surface packs the precision and surface quality necessary to contact the selector fork guide and the end of the selector fork. Thus, after assembling the ring of the selector fork guide, the process of reworking the contact surface by cutting is no longer necessary.

In one embodiment of the present invention, the second leg forms a ring-shaped reinforcing collar. For a sliding sleeve having a selector fork guide formed of two rings, in one embodiment, the second leg is adjacent to the axial direction to the outer surface of the sleeve body and is disposed on the sleeve body and axially to the first ring. In the direction of the second ring is connected. The second leg forms a cylindrical contact surface for the end of the selector fork. In this case the first leg and the second ring of the first ring form a groove for engaging the end of the selector fork. Preferably the first ring is formed such that the ring can also be used as a second ring. In this embodiment, the mutually adjacent second legs of the rings form a contact surface for the end of the selector fork, or only one second leg of one of the rings is the contact surface for the end of the selector fork. To form.

In another embodiment of the invention, the second ring is disposed axially spaced relative to the first ring on the sleeve body, the second leg bent in a different direction from an end of the first leg that is radially external, and The second leg is directed away from the second ring in the axial direction. In other words, at least one of the rings comprises a reinforcing collar at an end facing radially outward. The reinforcing collar faces away from the groove of the selector fork guide in the axial direction.

As one embodiment of the present invention suggests, if reinforcement is achieved by at least the leg comprising at least one bead formed of a sheet, the strength of the ring according to the invention can be increased. Further improvement in strength is achieved even when the first leg is formed of a double wall, as another embodiment describes. This embodiment of the present invention is particularly suitable when using a selector fork guide formed by only one ring. In this case, the wall sections of the legs that are formed in double extend directly opposite one another or are spaced axially apart from one another. The cross section of the first leg cut in the axial direction is then formed from a U-profile that is open toward the outer surface, and the second leg is bent in the other direction from the U-profile on the open side. The second leg is then separated at right angles from the end of the U-profile and abuts the outer surface of the sleeve body.

The invention is described in detail below with reference to a number of examples.

1 is an embodiment showing a cross-section of a sliding sleeve according to the present invention, the two rings in which the second leg is implemented equally adjacent to each other to form a selector fork guide,

FIG. 2 is an alternative arrangement and embodiment of a ring on the sleeve body of the sliding sleeve of FIG. 1;
3 is another embodiment of a sliding sleeve,
4 is a variation of the sliding sleeve of FIG. 3,

5 is a sliding sleeve with a selector fork guide, the ring of which sleeve comprises a reinforcing collar,

6 is a sliding sleeve formed from one ring and having a selector fork guide, wherein the first leg of the sleeve is formed as a U-profile.

1 shows an embodiment of a sliding sleeve 1 according to the invention. The sliding sleeve 1 consists of a sleeve body 2 and a selector fork guide 3. The selector fork guide 3 is arranged on the sleeve body 2 and is formed by two rings 4 formed symmetrically with each other. The ring 4 has an angular cross section with a first leg 4a bending radially from the sleeve body 2 and a second leg 4b bending at right angles from the first leg 4a. The second leg 4b is adjacent to the outer surface of the axially aligned sleeve body 2 and collides with the front of the outer surface. The ring 4 defines a guide groove 3a. The bottom of the groove 3a has a cylindrical contact surface 3b, which is formed by the surface of the second leg 4b facing outward. The first leg 4a of the ring 4 is provided with a plurality of beads 5 which are distributedly disposed around the ring 4 and extend in the radial direction.

In FIG. 2 two rings 6 symmetrically formed on one another are arranged on the sleeve body 2 while being connected axially with each other. The second legs 6b again face each other and are in contact with each other at the front. The radially outwardly facing first leg 6a has a thicker wall than the second leg 6b and is therefore implemented without reinforcement measures.

3 is a modification showing the arrangement of the ring 7 and the ring 8 together forming the selector fork guide. The second leg 7b of the ring 7 is adjacent to the outer surface of the axially aligned sleeve body 2 and is in contact with the first leg 8a of the second ring 8. The second leg 8b of the ring 8 faces outward in the axial direction. The guide groove 9 is defined by the rear side of the first leg 8a, the side facing out of the second leg 7b and the side facing the ring 8 of the first ring 7a of the ring 7. do. The cylindrical guide face 9a is formed by the outwardly facing side of the second leg 7b. The first legs 7a, 8a of the rings 7, 8 are reinforced by beads 10 and / or 11, respectively.

4 shows two rings 12 and 13 arranged in the same manner as in FIG. 3. The first leg 12a and / or 13a was not reinforced. The second legs 12b and 13b are different in length.

5 shows in detail the sliding sleeve 14 with the sleeve body 15 and the selector fork guide 16. The selector fork guide 16 is formed from two rings 17 formed symmetrically. The rings 17 are arranged spaced apart from each other in the axial direction. The first leg 17a of the ring 17 faces inward in the radial direction. The second leg 17b is bent in the other direction from the end of the first leg 17a which is radially outward. The second leg 17b also faces axially outward, thereby facing away from the other ring 17. The guide grooves 16a of the selector fork guide 16 are defined by one side of the first leg 17a, respectively, in the axial direction. The cylindrical contact surface 18 at the bottom of the groove of the guide groove 16a is formed in the sleeve body 15 by one embodiment.

6 shows the sliding sleeve 19 with one ring 20 on the sleeve body 21. The ring 20 forms the selector fork guide 22. The first leg 20a is formed into a double wall by the U-profile open to the outer surface. The second leg 20b is bent in the other direction from the U-profile on the opening side. The second leg 20b is axially aligned to form a cylindrical contact surface for the end of the selector fork, not shown, adjacent to the outer surface of the sleeve body and with the outwardly directed cylindrical surface.

Explanation of symbols on the main parts of the drawings

1, 14, 19: sliding sleeve 2, 15, 21: sleeve body

3, 16, 22: selector fork guide 3a, 9, 16a: guide groove

3b, 18: contact surface

4, 6, 7, 8, 12, 13, 17, 20: ring

1st leg: 4a, 6a, 7a, 8a, 12a, 13a, 17a, 20a

2nd leg: 4b, 6b, 7b, 8b, 12b, 13b, 17b, 20b

5, 10, 11: Bead 9a: Guide surface

Claims (7)

With sleeve bodies 2, 15, 21 and selector fork guides 3, 16, 22, The selector fork guides 3, 16, 22 are at least one fabricated from a sheet in a non-cutting forming process and protruding radially from the sleeve bodies 2, 15, 21 and fixed on the sleeve body. In the sliding sleeve (1, 14, 19) configured to include a first ring (4, 6, 7, 12, 17, 20), The first rings 4, 6, 7, 12, 17, 20 cut in the longitudinal direction are radially directed from the sleeve bodies 2, 15, 21 to the first legs 4a, 6a, 7a, 12a, 17a. , 20a and an angular cross section with second legs 4b, 6b, 7b, 12b, 17b, 20b which are bent in different directions from the first legs 4a, 6a, 7a, 12a, 17a, 20a. Have, The second legs 4b, 6b, 7b, 12b are adjacent to the outer surface of the axially aligned sleeve body 2 and are disposed on the sleeve body 2 and at the same time the first ring 4, 6. Sliding sleeve, characterized in that it is directed in the direction of the second ring (4, 6, 8, 13) axially connected to 7, 7, 12). delete delete The sliding sleeve according to claim 1, wherein the second leg (17b) forms a ring-shaped reinforcing collar. The method of claim 1, Sliding sleeve, characterized in that at least one of the legs (4a, 7a, 8a) has at least one bead (5, 10) formed of a sheet. delete delete

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