Arrangement for preventing the winding of a holder for a sliding guide

Abstract

The invention relates to an arrangement for preventing the winding of a holder for a sliding guide, which arrangement comprises a first slide rail (1), a second slide rail (2), and a holder (3). The first and second slide rails (1, 2) both extend in a direction of movement (D). The holder (3) extends in the direction of movement (D), wherein a plurality of rolling elements (31) are arranged on the holder (3) in the direction of movement (D), wherein the rolling elements (31) roll on the first and second rail surfaces (12, 22), whereby the holder (3), the first slide rail (1), and the second slide rail (2) can move relative to one another, wherein the holder (3) is rotatably connected to a rotatable pinion (32).A plurality of first knobs (13) are arranged at a fixed distance from one another in the direction of movement (D) by being installed on the first opposite side (11) outside the first rail surface (12), and a plurality of second knobs (23) are arranged at a fixed distance from one another in the direction of movement (D) by being installed on the second opposite side (21) outside the second rail surface (22).

Description

Technical field

[0001] The invention relates to an arrangement for preventing the winding of a holder for a sliding guide, in particular to an arrangement for preventing the winding of the holder on a sliding guide with limited travel by interlocking a pinion mounted on a rolling element holder for a sliding guide and studs installed on slide rails in a direction of movement in series, the studs being arranged on the mutually facing sides of two opposite slide rails in such a way that they are not in the path in which the rolling elements roll, this structural design contributing to ensuring greater rigidity and greater load-bearing capacity of the slide rails. State of the art

[0002] A conventional limited-travel slide guide comprises two relatively movable fixed-length slide rails. A sliding member is arranged between the two fixed-length slide rails to assist the two fixed-length slide rails in sliding relative to each other. The sliding member comprises a holder of a certain length and a plurality of rolling elements separated from the holder, with the rolling elements rolling on the rail surface and being loaded. Slide guides are generally used for processing methods where the sliding distance is short. To prevent the holder from twisting (e.g., sliding deviating from the predetermined path) between the two fixed-length slide rails during the movement of the limited-travel slide guide relative to the two fixed-length slide rails, a pinion gear is usually attached to the holder.In addition, recesses are formed on the two slide rails of fixed length and arranged in a direction of movement, wherein the recesses are provided for the pinion to engage in these recesses so that the holder can move at fixed relative positions.

[0003] KR1020210101906A discloses a crossed roller bearing with a retainer anti-winding function. A pinion gear 150 is arranged on a rolling element retainer 120. Recesses 160 are formed on the inner side of a sliding space of a slide rail 110 intended to receive the rolling element retainer 120. These recesses are designed to allow the pinion gear 150 to engage in the recesses 160.

[0004] In the above-mentioned KR1020210101906A, the sliding space is formed at a relatively thinner location on the slide rail 110. When recesses 160 are provided in the sliding space and the pinion gear 150 is arranged to engage the recesses 160, the rigidity of the slide rail 110 is further reduced, thereby correspondingly reducing the load-bearing capacity of the slide rail 110.

[0005] TW200912155A discloses a device for linear movement in which a gear 261 is arranged on a roller holder unit 250. Furthermore, external toothed rails 230, 240 are fixed to the slide rails 210, 220 by means of toothed rail holders 212, 222 and thus accommodated in grooves 214, 224 of the roller holder unit 250.

[0006] In the above-mentioned TW200912155A, the toothed rails 230, 240 are fixed in the relatively thinner grooves 214, 224 of the slide rails 210, 220, which leads to a reduction in the rigidity and load-bearing capacity of the slide rails 210, 220. Furthermore, the external toothed rails 230, 240 may become loose, which can lead to vibrations of the slide rails 210, 220.

[0007] WO2020118770A1 discloses a cross-roller guide rail in which a first rack 21 is formed on a second guide rail 2 and a second rack 31 is formed on a holder 3. A first gear 11 and a second gear 12 are concentrically mounted for rotation in a mounting hole 15 of the first slide rail 1 by means of a rotation axis 13. Thus, the holder is displaceably arranged at a fixed relative position.

[0008] Out of Fig. 2 of the aforementioned WO2020118770A1, it can be seen that the first gear 11 and the second gear 12, which are arranged concentrically, as well as the rotational axis 13 and the mounting hole 15, are all exposed on the upper side of a first guide rail 1. During the working movement, dirt, grease, and dust can easily penetrate between the first and second gears 11, 12 and the rotational axis 13 or between the rotational axis 13 and the mounting hole 15, thereby hindering the rotational movement of the first and second gears 11, 12. Another disadvantage is that the surface of the first and second guide rails 1, 2 has different heights, resulting in a height difference, which can impair the assembly of a workpiece. Object of the invention

[0009] The invention is based on the object of creating an arrangement for preventing the winding of a holder for a sliding guide, with which the deficiencies mentioned in the prior art can be eliminated. Technical solution

[0010] The object is achieved according to the invention by an arrangement for preventing the winding of a holder for a sliding guide having the features of claim 1. Advantageous embodiments are the subject of the dependent claims.

[0011] The inventive arrangement for preventing the winding of a holder for a sliding guide comprises a first slide rail which extends in a direction of movement and has a first opposite side, wherein on the first opposite side a first rail surface is recessed and arranged such that the first rail surface runs in the direction of movement; a second slide rail which extends in the direction of movement and has a second opposite side, wherein on the second opposite side a second rail surface is recessed and arranged such that the second rail surface runs in the direction of movement, wherein the first and the second opposite sides are located opposite one another; and a holder which extends in the direction of movement, wherein a plurality of rolling rollers are arranged on the holder in the direction of movement.The rolling elements roll on the first and second rail surfaces, allowing the holder, the first slide rail and the second slide rail to move relative to each other.

[0012] Furthermore, the holder can be rotatably connected to a rotatable pinion. A plurality of first studs are arranged at a fixed distance from one another in the direction of movement by installing them on the first opposite side outside the first rail surface. A plurality of second studs are arranged at a fixed distance from one another in the direction of movement by installing them on the second opposite side outside the second rail surface. The first studs and the second studs are each arranged on the opposite sides of the circumference of the pinion.

[0013] The pinion can engage with the first and second knobs respectively to prevent the holder from winding on the first and second slide rails.

[0014] Furthermore, a gap can be provided between the first opposing side and the second opposing side, with the first studs projecting toward the second opposing side and the second studs projecting toward the first opposing side. The length by which the first studs project is smaller than the length by which the second studs project.

[0015] Furthermore, the first and second nubs can all be cylindrical.

[0016] Furthermore, a plurality of first round holes, into which the first studs are each installed, can be arranged on the first opposite side. A plurality of second round holes, into which the second studs are each installed, can be arranged on the second opposite side.

[0017] Furthermore, the direction of movement can be a straight or curved line.

[0018] Furthermore, a receiving space in which a shaft is mounted can be arranged on the holder, wherein the pinion is rotatably connected to the shaft in the receiving space and is mounted in such a way that the pinion is partially located outside the holder.

[0019] Due to the above technical features, the following advantages can be achieved in the present invention.In comparison to conventional designs, in which the racks provided for engaging the pinion are formed directly in the sliding spaces of the slide rails and the rigidity and load-bearing capacity of the slide rails are thereby reduced, the arrangement according to the invention is advantageous in that the first studs of the first slide rail provided for engaging the pinion of the holder are arranged on the first opposite side and are not located on the first rail surface and the second studs of the second slide rail provided for engaging the pinion of the holder are arranged on the second opposite side and are not located on the second rail surface, wherein the first and the second rail surface are not further processed to form a rack and are therefore completely retained, so that the first and the second slide rail are stiffer and have a higher load-bearing capacity.

[0020] In addition, the first studs of the first slide rail can be installed in the first round holes outside the first rail surface and the second studs of the second slide rail are installed in the second round holes outside the second rail surface, wherein the processing method "installing the studs outside the rail surface" in the invention has the advantage that the working space for installation is not limited, so that installation is facilitated, whereas the working space for manufacturing a rack on the rail surface is limited in the prior art and processing is therefore made more difficult.

[0021] Furthermore, the first and second round holes can be located far away from the first and second rail surfaces, so that they completely do not affect the rigidity of the first and second rail surfaces. At the same time, the first and second round holes are located outside the first and second rail surfaces, so that the first and second round holes have sufficient depth, and the first and second studs are thus more firmly secured in the first and second round holes and do not come loose.

[0022] Furthermore, a receiving space can be arranged in the holder of the arrangement according to the invention, in which the shaft intended for rotatably supporting the pinion is mounted, with the mounted pinion also only partially located outside the holder. This prevents the ingress of grease, dirt, and dust into the receiving space and protects the pinion from interference during rotation. Short description of the drawing Fig. 1 shows an exploded view of a preferred embodiment of an arrangement according to the invention for preventing the winding of a holder for a sliding guide. Fig. 1A shows a schematic representation to illustrate that the first opposite side of the first slide rail and the second opposite side of the second slide rail of the arrangement according to the invention are arranged opposite each other. Fig. 2 shows a perspective view of the arrangement according to the invention in Fig. 1 in assembled condition. Fig. 3 shows a schematic diagram illustrating that the pinion of the holder engages with the first and second knobs, respectively. Fig. 4 shows a sectional view of Fig. 2. Fig. 5 shows a schematic diagram illustrating that the first studs of the first slide rail are installed in the first round holes and the second studs of the second slide rail are installed in the second round holes. Detailed description of a preferred embodiment

[0023] Objects, features, and advantages of the present invention will be explained in more detail below with reference to the detailed description of an embodiment and the accompanying drawings. The invention is not intended to be limited to the description and the accompanying drawings.

[0024] As in Fig. 1, Fig. 1A and Fig. 2, the arrangement according to the invention for preventing the winding of a holder for a sliding guide comprises a first slide rail 1, a second slide rail 2 and a holder 3. The first slide rail 1 extends in a direction of movement D. The first slide rail 1 comprises a first opposite side 11, on which a first rail surface 12 is recessed and arranged such that the first rail surface 12 runs in the direction of movement D. The second slide rail 2 extends in the direction of movement D and has a second opposite side 21, wherein on the second opposite side 21 a second rail surface 22 is recessed and arranged such that the second rail surface 22 runs in the direction of movement D, wherein the first and the second opposite sides 11, 21 are located opposite one another.This means that the first opposing side 11 faces the second slide rail 2 and the second opposing side 21 faces the first slide rail 1. The first rail surface 12, which is recessed on the first opposing side 11, and the second rail surface 22, which is recessed on the second opposing side 21, are provided so that rolling elements 31 can roll on these rail surfaces 12, 22. The holder 3 extends in the direction of movement D, with a plurality of rolling rolling elements 31 being arranged on the holder 3 in the direction of movement D. The rolling elements 31 are arranged offset by 90° from one another and roll on the first and second rail surfaces 12, 22, whereby the holder 3, the first slide rail 1, and the second slide rail 2 can move relative to one another in the direction of movement D. The direction of movement D can be configured as a straight or curved line as required.

[0025] As in Fig. 1 to Fig. 3, the holder 3 in the preferred embodiment is rotatably connected to a rotatable pinion 32. A plurality of first studs 13 are installed on the first opposing side 11 outside the first rail surface 12 in the direction of movement D at a fixed distance from one another. A plurality of second studs 23 are installed on the second opposing side 21 outside the second rail surface 22 in the direction of movement D at a fixed distance from one another. The pinion 32 engages in each of the first and second studs 13, 23, thereby preventing the holder 3 from winding on the first and second slide rails 1, 2. In addition, the first and second slide rails 1, 2 have greater rigidity and greater load-bearing capacity. In the preferred embodiment, the first and second studs 13, 23 are all cylindrical, which promotes and enables smooth guidance of the pinion 32.

[0026] As in Fig. 3 and Fig. 4, the first studs 13 are located on the upper edge of the first opposing side 11 of the first slide rail 1 and the second studs 23 are located on the lower edge of the second opposing side 21 of the second slide rail 2, such that the first and second studs 13, 23 are each arranged on opposite sides of the circumference of the pinion 32 and engage with the pinion 32. Furthermore, a gap d is present between the first opposing side 11 of the first slide rail 1 and the second opposing side 21 of the second slide rail 2. The first studs 13 protrude towards the second opposing side 21, wherein the length by which the first studs 13 protrude is smaller than the gap d. The second studs 23 protrude towards the first opposing side 11, wherein the length by which the second studs 23 protrude is also smaller than the gap d.This prevents the first and second slide rails 1, 2 from undesirably touching the first and second studs 13, 23 when moving relative to each other. As shown in . Fig. 4, the holder 3 consists of two holder halves, although the design of the holder 3 is not limited to this embodiment. It is conceivable to manufacture the holder 3 in one piece according to the design of the mold. A receiving space 33 is arranged in the holder 3, in which a shaft 34 is arranged. In the receiving space 33, the pinion 32 is rotatably connected to the shaft 34 and arranged such that the pinion 32 is only partially located outside the holder 3. Thus, the pinion 32 is protected from interference by grease, dirt, and dust during the rotational movement.

[0027] As in Fig. 4 and Fig. 5, the first studs 13 are each installed in the first round holes 14 on the first opposing side 11 of the first slide rail 1. Likewise, the second studs 23 are each installed in the second round holes 24 on the second opposing side 21 of the second slide rail 2. Since the second slide rail 2 and the first slide rail 1 are arranged symmetrically to each other, the second slide rail 2 can be manufactured in the manufacturing process by turning the first slide rail 1 by 180°. Therefore, the first and second slide rails 1, 2 are simultaneously in Fig.5. Furthermore, during the manufacturing process, the first and second studs 13, 23 are first coated with adhesive and then installed into the first and second round holes 14, 24, respectively. This further secures the first studs 13 to the first slide rail 1 and prevents them from coming loose. The second studs 23 are also further secured to the second slide rail 2 and prevent them from coming loose.

[0028] Although the present invention has been described in detail using an exemplary embodiment, it will be understood by those skilled in the art that the invention is not limited to this exemplary embodiment. Rather, modifications are possible such that individual features can be omitted or other combinations of features can be implemented, as long as the scope of the appended claims is not exceeded. The disclosure of the present invention includes all combinations of the individual features presented.

[0029] In summary, the invention relates to an arrangement for preventing the winding of a holder for a sliding guide, which arrangement comprises a first slide rail 1, a second slide rail 2, and a holder 3. The first and second slide rails 1, 2 both extend in a direction of movement D. The first slide rail 1 has a first opposing side 11, and the second slide rail 2 has a second opposing side 21, wherein the first and second sides are opposite one another. A first rail surface 12 is recessed on the first opposing side 11, and a second rail surface 22 is recessed on the second opposing side 21.The holder 3 extends in the direction of movement D, wherein a plurality of rolling elements 31 are arranged on the holder 3 in the direction of movement D, wherein the rolling elements 31 roll on the first and second rail surfaces 12, 22, whereby the holder 3, the first slide rail 1 and the second slide rail 2 can move relative to one another, wherein the holder 3 is rotatably connected to a rotatable pinion 32. A plurality of first studs 13 are arranged at a fixed distance from one another in the direction of movement D by being installed on the first opposing side 11 outside the first rail surface 12, and a plurality of second studs 23 are arranged at a fixed distance from one another in the direction of movement D by being installed on the second opposing side 21 outside the second rail surface 22.The first studs 13 and the second studs 23 are each arranged on the opposite sides on the circumference of the pinion 31, wherein the pinion 31 engages in the first and second studs 13, 23 in order to prevent the holder 3 from winding on the first and second slide rails 1, 2. List of reference symbols 1 first slide rail 11 first opposing side 12 first rail surface 13 first pimple 14 first round hole 2 second slide rail 21 second opposing side 22 second rail surface 23 second pimple 24 second round hole 3 holders 31 rolling elements 32 pinions 33 Recording room 34 Wave D Direction of movement d gap QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] KR 1020210101906A [0003, 0004] TW 200912155A [0005, 0006] WO 2020118770A1 [0007, 0008]

Claims

[1] Arrangement for preventing the winding of a holder for a sliding guide, comprising: - a first slide rail (1) which extends in a direction of movement (D) and has a first opposite side (11), wherein on the first opposite side a first rail surface (12) is recessed and arranged such that the first rail surface (12) runs in the direction of movement (D); - a second slide rail (2) which extends in the direction of movement (D) and has a second opposite side (21), wherein on the second opposite side (21) a second rail surface (22) is recessed and arranged such that the second rail surface (22) extends in the direction of movement (D), wherein the first and the second opposite side (11, 21) are located opposite one another; - a holder (3) extending in the direction of movement (D), wherein a plurality of rolling roller elements (31) are arranged on the holder (3) in the direction of movement (D), wherein the roller elements (31) roll on the first and second rail surfaces (12, 22), whereby the holder (3), the first slide rail (1) and the second slide rail (2) can move relative to one another, wherein the holder (3) is rotatably connected to a rotatable pinion (32); - a plurality of first knobs (13) arranged at a fixed distance from one another in the direction of movement (D) by installation on the first opposite side (11) outside the first rail surface (12); and - a plurality of second knobs (23) arranged at a fixed distance from one another in the direction of movement (D) by installation on the second opposite side (21) outside the second rail surface (22); characterized bythat the first knobs (13) and the second knobs (23) are each arranged on the opposite sides on the circumference of the pinion (31), wherein the pinion (31) engages in the first and the second knobs (13, 23) in order to prevent the holder (3) from winding on the first and the second slide rail (1, 2). [2] Arrangement according to claim 1, characterized by that a gap (d) is provided between the first opposing side (11) and the second opposing side (21), wherein the first knobs (13) protrude towards the second opposing side (21) and the second knobs (23) protrude towards the first opposing side (11), wherein the length by which the first knobs (13) protrude and the length by which the second knobs (23) protrude are both smaller than the gap (d). [3] Arrangement according to claim 1, characterized by that the first and second knobs (13, 23) are all cylindrical. [4] Arrangement according to claim 1, characterized by , that on the first opposite side (11) a plurality of first round holes (14) are arranged, into which the first knobs (13) are respectively installed; and that on the second opposite side (21) a plurality of second round holes (24) are arranged, into which the second knobs (23) are each installed. [5] Arrangement according to claim 1, characterized by that the direction of movement (D) is a straight or curved line. [6] Arrangement according to claim 1, characterized by that a receiving space (33) is arranged on the holder (3), in which a shaft (34) is mounted, wherein the pinion (32) is rotatably connected to the shaft (34) in the receiving space (33) and is mounted in such a way that the pinion (32) is partially located outside the holder (3).

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