HEIGHT-ADJUSTABLE SLIDING DOOR MECHANISM

Description

TECHNICAL FIELD

[0001] The invention relates to a sliding door mechanism for the movement of sliding doors in vehicles.PRIOR ART

[0002] Sliding door mechanisms are used to ensure the connection of the sliding doors used in vehicles to the vehicle bodies. The said sliding door mechanisms are associated with the sliding door on one side and the vehicle body on the other side. The sliding door mechanisms are provided with a height adjustment feature to ensure that the sliding door closes in the correct position. The problem with these embodiments is that after the adjustment is made, the adjustment remains secured without alterations.

[0003] In the sliding door mechanism disclosed in the publication no. EP3150786, a height-adjustable embodiment is disclosed. After the adjustment is made, a bolt is tightened to secure the adjustment. However, vibrations generated during the movement of the vehicle may cause the bolt to loosen and the adjustment to be altered. In the mentioned structure, the forces coming in the direction perpendicular to the shaft axis on which the height adjustment is made affect the bolt used for securing in a way that forces it to be removed. Therefore, vibrations cause the bolt to loosen.

[0004] WO 2020122844 A1 also discloses an example of a sliding door mechanism.

[0005] As a result, all the above-mentioned problems have made it necessary to realize a novelty in the relevant technical field.SUMMARY OF THE INVENTION

[0006] The present invention relates to a sliding door mechanism to eliminate the aforementioned disadvantages and offer new advantages to the relevant technical field. The object of the invention is to provide a sliding door mechanism in which the sliding door height adjustment can be maintained.

[0007] In order to achieve all the aforementioned objects and those which will be apparent from the following detailed description, the present invention relates to a sliding door mechanism according to claim 1, having a door bracket and a roller bracket; at the part where the said roller bracket and door bracket are connected, an axis bushing fixed rotationally on a mounting pin on the roller bracket and a connection opening on the door bracket into which the said axis bushing is screwed. Accordingly, two connection openings are provided concentrically on at least two fixing plates extending substantially in parallel so as to define a plate opening therebetween on the door bracket and it comprises at least one fixing bolt positioned in a fixing hole provided on at least one of the said fixing plates and guiding the fixing plates so as to change the distance therebetween. Thus, by changing the distance between the fixing plates when the fixing bolt is tightened, the axes of the connection openings shift and their concentricity with each other and with the axis bushing is altered. In this case, the fit between the inner walls of the connection openings and the threads provided on the outer wall of the axis bushing is altered and the axis bushing is compressed. Therefore, the axis bushing cannot rotate in the connection openings. As a result, the height adjustment of the door bracket remains constant without changing.

[0008] In a possible embodiment of the invention, the fixing bolt is connected in such a way that it passes through the fixing hole provided on one of the fixing plates to engage with the other fixing plate and pull the fixing plates towards each other.

[0009] In a possible embodiment of the invention, the fixing bolt is connected in such a way that it passes through the fixing hole provided on one of the fixing plates and pushes the other fixing plate.

[0010] In a possible embodiment of the invention, the fixing bolt and the mounting pin are parallel. Thus, the forces transferred between the door bracket and the roller bracket are prevented from forcing the fixing bolt to loosen.

[0011] In a possible embodiment of the invention, it comprises at least one keyway for rotating the axis bushing.

[0012] In a possible embodiment of the invention, the roller bracket comprises a first wall and a second wall extending substantially parallel to each other with the axis bushing therebetween.

[0013] In a possible embodiment of the invention, it comprises at least one bushing provided at two ends of the axis bushing.

[0014] In a possible embodiment of the invention, it comprises at least one bushing bearing for securing the said bushings.BRIEF DESCRIPTION OF THE FIGURES

[0015] Fig. 1 shows a representative isometric view of the sliding door mechanism according to an embodiment of the invention. Fig. 2 shows a detail view of the area where the door bracket and roller bracket are connected in the sliding door mechanism according to the embodiment of the invention. Fig. 3 shows a representative front view of the sliding door mechanism according to the embodiment of the invention. Fig. 4 shows a representative top view of the sliding door mechanism according to the embodiment of the invention. Fig. 5 shows a representative exploded view of the sliding door mechanism according to the embodiment of the invention. DETAILED DESCRIPTION OF THE INVENTION

[0016] In this detailed description, the sliding door mechanism (10) according to the invention is only described with the examples without any limiting effect for a better understanding of the subject.

[0017] As can be seen in Fig. 1, the sliding door mechanism (10) according to the invention essentially has a door bracket (20) and a roller bracket (30) connected with the said door bracket (20). The said door bracket (20) is connected with the sliding door, while the roller bracket (30) is connected with a slide provided on the vehicle body. A roller assembly (31) provided on the roller bracket (30) enables the roller bracket (30) to be displaced in the slide.

[0018] As can be seen in Fig. 2, the said door bracket (20) has two fixing plates (21) to ensure contact with the said roller bracket (30). The said fixing plates (21) extend substantially in parallel so as to define a plate opening (23) therebetween. There is one connection opening (22) provided concentrically on each of the fixing plates (21). Furthermore, there are provided a fixing hole (24) on at least one of the fixing plates (21) and at least one fixing bolt (25) which passes through the said fixing hole (24) and is associated with the other fixing plate (21).

[0019] As can be seen in Fig. 3, the said roller bracket (30) has a bracket body (32) on which the said roller assembly (31) is provided. The roller assembly (31) essentially has a plurality of rollers.

[0020] The bracket body (32) has a first wall (321) and a second wall (322) provided at a distance therebetween. A mounting pin (34) passing through the pin openings (33) provided on the first wall (321) and the second wall (322) is secured by means of a nut (38). An axis bushing (35) is rotationally positioned on the mounting pin (34). In other words, the axis bushing (35) is rotationally confined on the mounting pin (34) between the first wall (321) and the second wall (322). There are provided bushing bearings (36) and bushings (37) at the two ends of the axis bushing (35) to prevent wear that may occur during rotation of the axis bushing (35).

[0021] When the door bracket (20) is connected with the roller bracket (30), the axis bushing (35) is inserted into the connection openings (22) provided on the fixing plates (21). Furthermore, the threads provided on the outer wall of the axis bushing (35) are provided to be compatible with the threads provided on the inner walls of the connection openings (22). Thus, when the axis bushing (35) is rotated, the door bracket (20) is displaced in the direction of extension of the mounting pin (34). The axis bushing (35) has a keyway (351) provided thereon for easy rotation.

[0022] By rotating the axis bushing (35) and displacing the door bracket (20), the height of the sliding door is adjusted. The fixing bolt (25) associated with the fixing plates (21) is then rotated to ensure that the height of the sliding door is fixed. By rotating the fixing bolt (25), the fixing plates (21) can be moved towards or away from each other. In both cases, the concentricity of the connection opening (22) and the axis bushing (35) is altered, in other words, the mutually provided threads are prevented from cooperating. Therefore, the axis bushing (35) and the door bracket (20) are prevented from rotating independently of each other. Thus, the height of the sliding door is fixed.

[0023] In a possible embodiment of the invention, the fixing hole (24) is provided on both fixing plates (21). The fixing element (25) passing through the fixing hole (24) in one of the fixing plates (21) is connected to the other fixing plate (21). In the said structure, when the fixing element (25) is tightened, the fixing plates (21) are pulled towards each other. This prevents the axis bushing (35) from rotating by compressing the threads provided on the outer wall of the axis bushing (35).

[0024] In another possible embodiment of the invention, the fixing hole (24) is provided on a single fixing plate (21) and the fixing element (25) passing through the fixing hole (24) rests against the other fixing plate (21). When the fixing element (25) is rotated, it pushes the plate against which it rests and moves the fixing plates (21) away from each other. This prevents the axis bushing (35) from rotating by compressing the threads provided on the outer wall of the axis bushing (35).

[0025] With all the aforementioned embodiments of the invention, after the height of the sliding door is adjusted, the height is fixed by means of the fixing element (25). In the said embodiment, the mounting axis of the fixing element (25) does not intersect with the mounting axis of the axis bushing (35) that connects the door bracket (20) and the roller bracket (30). Thus, the fixing element (25) is prevented from being forced to be removed due to the movements of the door bracket (20) and the roller bracket (30) relative to each other, in other words, due to the vibrations generated. In other words, since the generated vibrations cannot create a force in the direction that would force the fixing element (25) to be removed, the fixing element (25) ensures that the height adjustment can be maintained unchanged.

[0026] The scope of protection of the invention is set out in the appended claims and shall in no way be limited to what is described in this detailed description for illustrative purposes. Indeed, it is clear that a person skilled in the art can come up with similar embodiments in light of the foregoing description without departing from the invention as defined by the claims.REFERENCE NUMBERS GIVEN IN THE FIGURES

[0027] 10Sliding door mechanism 20Door bracket 21 Fixing plate 22 Connection opening 23 Plate opening 24 Fixing hole 25 Fixing bolt 30Roller bracket 31 Roller assembly 32 Bracket body 321 First wall 322 Second wall 33 Pin opening 34 Mounting pin 35 Axis bushing 351 Keyway 36 Bushing bearing 37 Bushing 38 Nut

Claims

1. A sliding door mechanism (10) having a door bracket (20) and a roller bracket (30), at the part where the said roller bracket (30) and door bracket (20) are connected, an axis bushing (35) is fixed rotationally on a mounting pin (34) on the roller bracket (30) and a connection opening (22) is provided on the door bracket (20) into which the said axis bushing (35) is screwed, characterized in that two connection openings (22) are provided concentrically on at least two fixing plates (21) extending substantially in parallel so as to define a plate opening (23) therebetween on the door bracket (20) and it comprises at least one fixing bolt (25) positioned in a fixing hole (24) provided on at least one of the said fixing plates (21) and guiding the fixing plates (21) so as to change the distance therebetween.

2. The sliding door mechanism (10) according to claim 1, characterized in that the fixing bolt (25) is connected in such a way that it passes through the fixing hole (24) provided on one of the fixing plates (21) to engage with the other fixing plate (21) and pull the fixing plates (21) towards each other.

3. The sliding door mechanism (10) according to claim 1, characterized in that the fixing bolt (25) is connected in such a way that it passes through the fixing hole (24) provided on one of the fixing plates (21) and pushes the other fixing plate (21).

4. The sliding door mechanism (10) according to any one of the preceding claims, characterized in that the fixing bolt (25) and the mounting pin (34) are parallel.

5. The sliding door mechanism (10) according to any one of the preceding claims, characterized in that it comprises at least one keyway (351) for rotating the axis bushing (35).

6. The sliding door mechanism (10) according to claim 1, characterized in that the roller bracket (30) comprises a first wall (321) and a second wall (322) extending substantially parallel to each other with the axis bushing (35) therebetween.

7. The sliding door mechanism (10) according to claim 6, characterized in that it comprises at least one bushing (37) provided at the two ends of the axis bushing (35).

8. The sliding door mechanism (10) according to claim 7, characterized in that it comprises at least one bushing bearing (36) for securing the said bushings (37).