car door handle

Abstract

Motor vehicle door handle with a mounting bracket (1) supporting a transmission lever (2) and a handle bracket (3), wherein a handle dome (4) of the handle bracket (3) projects through a guide channel (11) of the mounting bracket (1) and is connected to the transmission lever (2) by means of a pivot pin (5) engaging in bearing eyes (6), wherein in an assembly position of the transmission lever (2) an axial end having a pointed end of the pivot pin (5) which is mounted in a pivot pin bore (10) and acted upon by the force of a pivot pin spring (9) runs up on a guide shoulder (12) during assembly and is axially guided back into the pivot bore (10) and subsequently automatically retracts into the bearing eyes (6), characterized in that the pivot pin bore (10) is associated with the handle dome (4),that the bearing eye (6) is associated with the transmission lever (2) in the assembly direction and the ramp shoulder (12) is positioned in front of the opening edge of the guide shaft (11) in the assembly direction.

Description

The invention relates to a motor vehicle door handle with a mounting bracket supporting a transmission lever and a handle bracket, wherein a handle dome of the handle bracket extends through a guide channel of the mounting bracket and is connected to the transmission lever by means of a pivot pin engaging in bearing eyes. Such a motor vehicle door handle is described in DE 10 2008 006 287 A1, DE 10 2009 044 042 A1, DE 36 28 376 A1 and other publications. The vehicle door handle has a mounting bracket that is attached to a vehicle door. In its operational state, the mounting bracket supports a transmission lever and a handle. The handle has a bearing end that connects it to the mounting bracket. Its grip boss extends through a guide channel in the mounting bracket. The free end of the transmission lever is located on the inside of the guide channel. This end of the grip boss is connected to the transmission lever by means of a pivot pin that engages in bearing eyes, such that a pivoting movement of the handle results in a pivoting movement of the transmission lever. Via a Bowden cable or linkage, the pivoting movement of the transmission lever can be transmitted to a door lock, allowing the door lock to be opened by pulling the handle. When installing the vehicle door handle, the mounting bracket is first attached to the inner side of the door skin. Then, the front bearing end of the handle bracket is connected to a corresponding counter bearing on the mounting bracket. Finally, the rear handle boss is inserted through the guide channel and connected to the transmission lever there using the pivot pin. US Patent 2008 / 0258494 A1 describes a generic motor vehicle door handle in which a spring-loaded pivot pin protrudes laterally from a transmission lever and engages in a bearing eye of a handle boss during installation. For this purpose, the pivot pin rests in a pivot pin bore and is actuated by a pivot pin spring. US Patent 5,651,163 A describes a motor vehicle door handle with pivot pins fixed to a handle dome, which can snap into bearing eyes during assembly. DE 41 26 714 C1 describes a motor vehicle door handle in which a handle spring is held in a ready position by a slider in an assembly position. When a handle bracket is mounted, the slider is moved and releases the handle spring so that it can assume its final position. The invention is based on the objective of further developing the generic motor vehicle door handle in a way that is advantageous for practical use. This objective is achieved by the invention as specified in the claims. According to the invention, one of the pivot pins is designed such that it automatically engages in at least one bearing eye during assembly. For this purpose, the pivot pin can be axially actuated by a pivot pin spring. In an axially retracted position, the handle dome can be inserted through the guide channel. When the pivot pin reaches the bearing eye, it is moved into the bearing eye by the pivot pin spring. In a preferred embodiment, the pivot pin is moved into the axially retracted position during the relative displacement of the handle handle with respect to the mounting bracket during assembly of the handle dome. For this purpose, one end of the pivot pin can run onto a guide shoulder. The guide shoulder is preferably arranged upstream of the opening edge of the guide channel in the assembly direction. The end of the pivot pin can have a pointed end. The pivot pin preferably has a conical end.This conical end can run up onto the guide shoulder, thus axially retracting the pivot pin. The pivot pin preferably rests in a pivot pin bore in the free end of the handle dome. The width of the handle dome preferably corresponds to the clear width of the guide shaft, so that after running up onto the guide shoulder, the pivot pin is completely forced into the pivot pin bore. In a preferred embodiment of the invention, two pivot pins are provided, spring-loaded against each other. The two pivot pins protrude from the pivot pin bore of the handle dome with their preferably conical ends. Each of the two narrow sides of the guide shaft forms a ramp against which the conical tips of the pivot pins run, so that the pivot pins are forced into the pivot pin bore against the restoring force of the pivot pin spring.In this position, the pivot pin bore passes through the guide channel and then enters a bearing section of the free end of the transmission lever. The transmission lever is preferably held by a retaining element in a position where the mounting channel of the transmission lever connects directly to the guide channel. The free end of the transmission lever can have a stop flank against which the end of the dome abuts. The bearing eyes can be formed by spaced-apart bearing legs. The distance between the two bearing legs corresponds to the width of the handle dome, ensuring that it is mounted on the transmission lever without play. In the final assembly phase, the two pivot pins engage in their respective bearing eyes formed by the bearing legs. The two pivot pins have a cylindrical section adjoining the conical end section.The diameter of this cylinder section corresponds to the diameter of the bearing eyes, ensuring a rattle-free fit of the handle on the transmission lever. The transmission lever has a pivot axis whose length is greater than the distance between the two bearing eyes. The pivot axis of the transmission lever is supported at both ends by the mounting bracket. The transmission lever is actuated by a return spring that holds the handle in a rest position. The spring is tensioned when the handle is pulled. Simultaneously, the transmission lever pivots and opens a door lock. The retaining element is preferably associated with a bracket for a lock cylinder and, during the installation of the lock cylinder, is moved from a holding position that keeps the transmission lever in an installation position to a release position in which the transmission lever can pivot as described above. An embodiment of the invention is explained below with reference to the accompanying drawings. They show: Fig. 1 in a perspective view of a mounting bracket with a handle 3, the handle dome 4 of which is not yet mounted with a transmission lever 2. The free end of the handle dome 4 is located outside a guide channel 11; Fig. 2 as a detail of the motor vehicle door handle in the view according to Fig. 1; Fig. 3 the section along line III-III in Fig. 1, however with a handle dome 4 pivoted further towards the guide channel 11, wherein the pivot pins 5 engage a ramp shoulder 12 of the mounting bracket 1; Fig. 4 a subsequent view to Fig. 3, wherein, after engaging the ramp shoulder 12, the pivot pins 5 have entered the pivot pin bore 9; Fig. 5 a subsequent view to Fig. 4, after the pivot pins 5 have engaged in bearing eyes 6 of the transmission lever; Fig.Fig. 6 a perspective underside view of the motor vehicle door handle with the handle dome 4 already connected to the transmission lever 2, but with the transmission lever 2 held in the assembly position, and Fig. 7 a representation according to Fig. 6 after release of the retaining element 13 holding the transmission lever 2 in the assembly position. The vehicle door handle shown in the drawings has a mounting bracket 1, which is made of plastic and is attached to the inside of the vehicle body. A handle 3 is pivotally mounted to the mounting bracket 1 at its bearing end. The mounting bracket 1 forms a guide channel 11, which supports a grip boss 4 of the handle 3. The grip boss 4 projects approximately at a right angle from the handle section of the handle 3. The free end of the handle dome 4 is articulated, in the position shown in Figs. 5, 6 to 7, to a transmission lever 2 via pivot pins 5 which engage in bearing eyes 6. The pivot axis of the transmission lever 2 is supported in axle bearings 16 of the mounting bracket 1. The bearing axis for the pivot pins 5 of the handle dome 4, defined by the bearing eyes 6, runs parallel to the pivot axis of the transmission lever 2. Fig. 6 shows that the axial distance of the axle bearings 16 of the pivot bearing of the transmission lever 2 is greater than the axial distance of the two bearing legs 14 that form the bearing eyes 6. The cross-section of the handle dome 4 is approximately rectangular. The cross-section of the guide shaft 11 also has a similar rectangular shape, so that the handle dome 4 is guided in the guide shaft 11 with essentially no play. The transmission lever 2 is subjected to torque by a spring, in particular a torsion spring or pivot spring. It is subjected in such a direction of rotation that the free end of the transmission lever 2 is subjected to torque in the direction away from the guide shaft 11. The spring thus holds the handle 3, which is articulated to the transmission lever 2, in a rest position. If an external pull is exerted on the handle 3, the handle dome 4 slides through the guide shaft 11 and, due to the linkage of the pivot pins 5 to the free end of the transmission lever 2, pivots the transmission lever 2 into an operating position in which a door lock is opened via a linkage (not shown) or a Bowden cable (not shown). The hinge pin 5 according to the invention has the property of automatically entering the bearing eyes 6 during the assembly of the handle bracket 3, i.e. when the handle dome 4 is inserted into the area between the bearing legs 14. In this assembly position, the transmission lever 2 is held in the position shown in Figures 1, 2, 3, 4, 5 to 6. A retaining element 13, designed as a slide, serves this purpose. In this assembly position, the two bearing legs 14 lie directly behind the guide channel 11 on the inside of the door. The bearing legs 14 can rest in contact with the wall of the guide channel 11. The space between the bearing legs 14 thus forms, in a sense, an extension of the two narrow sides of the guide channel 11. On the outer edge of the guide shaft 11 facing the door, the narrow sides of the guide shaft 11 form two opposing ramp shoulders 12. These are inclined surfaces. The hinge pin 5 according to the invention is arranged to be axially movable in a bearing bore 10 of the free end of the handle dome 4. It consists of two hinge pins 5, which are spring-loaded in the axial direction by a hinge pin spring 9. The hinge pin spring 9 is a helical compression spring, the ends of which each lie in a receiving opening of the hinge pin 5. Both hinge pins each have a cylindrical section 8, the diameter of which essentially corresponds to the diameter of the bearing eye 6. The end of the hinge pin 5 is formed by a conical section 7. If the handle 3 is pivoted from the pre-assembly position shown in Fig. 1, in which the bearing end sections of the pivot pins 5 protrude from the bearing bore 10, further into the position shown in Fig. 3, in which the conical sections 7 abut the ramp shoulders 12, a resistance must be overcome during the further movement. During further displacement, the conical sections 7 slide along the inclined ramp shoulders 12 and displace the two pivot pins 5 against the restoring force of the pivot pin spring 9 until they reach the position shown in Fig. 4. In this position, the pivot pins 5 have entered the bearing bore 10 to such an extent that the handle dome 4 can be pushed through the guide shaft. As soon as the tips of the pivot pins 5 have left the wall of the guide shaft 11, they contact the inner wall of the bearing legs 14. Only when the position shown in Fig.When the position shown in 5 is reached, in which the free end of the handle dome 4 may be struck against a stop flank 15 of the transmission lever 2, but in any case the pivot pins 5 have been brought into an aligned position with the bearing eyes 6, the pivot pins 5, under the force of the tensioned pivot pin spring 9, partially emerge from the bearing bore 10 and into the bearing eyes 6. The cylindrical section 8 of the hinge pin 5 originates from a bearing section 17 of the hinge pin 5, forming a step, which on the one hand forms the opening in which the hinge pin spring 9 is mounted and on the other hand is guided within the bearing bore 10. After releasing the retaining element 13, the transmission lever 2 assumes the operating position shown in Fig. 7. The transmission lever 2 is mounted in the two axle bearings with virtually no play. The narrow sides of the handle dome 4, from which the pivot pins 5 project, are spaced apart by a distance corresponding to the clear width of the bearing legs 14, so that the handle dome 4 is mounted rattle-free on the transmission lever 2 and the transmission lever 2 is mounted rattle-free on the mounting bracket 1. The handle dome 4 is additionally guided by the two opposing narrow sides of the guide channel 11. Reference symbol list 1 Mounting bracket 2 Transmission lever 3 Handle bracket 4 Handle dome 5 Joint pin 6 Bearing eye 7 Conical end 8 Cylindrical section 9 Joint pin spring 10 Bearing bore 11 Guide channel 12 Run-up shoulder 13 Retaining element 14 Bearing leg 15 Stop flank 16 Axle bearing 17 Bearing section

Claims

Motor vehicle door handle with a mounting bracket (1) supporting a transmission lever (2) and a handle bracket (3), wherein a handle dome (4) of the handle bracket (3) projects through a guide channel (11) of the mounting bracket (1) and is connected to the transmission lever (2) by means of a pivot pin (5) engaging in bearing eyes (6), wherein in an assembly position of the transmission lever (2) an axial end having a pointed end of the pivot pin (5) which is mounted in a pivot pin bore (10) and acted upon by the force of a pivot pin spring (9) runs up on a guide shoulder (12) during assembly and is axially guided back into the pivot bore (10) and subsequently automatically retracts into the bearing eyes (6), characterized in that the pivot pin bore (10) is associated with the handle dome (4),that the bearing eye (6) is associated with the transmission lever (2) in the assembly direction and the ramp shoulder (12) is positioned in front of the opening edge of the guide shaft (11) in the assembly direction. Motor vehicle door handle with a mounting bracket (1) rotatably supporting a transmission lever (2) and a handle bracket, wherein a handle dome (4) of the handle bracket (3) projects through a guide channel (11) of the mounting bracket (1) and is connected to the transmission lever (2) by means of a pivot pin (5) engaging in bearing eyes (6), wherein in an assembly position of the transmission lever (2) an axial end having a pointed end of the pivot pin (5) which is mounted in a pivot pin bore (10) and acted upon by the force of a pivot pin spring (9) runs onto a guide shoulder (12) during assembly and is axially guided back into the pivot bore (10) and subsequently automatically retracts into the bearing eyes (6), wherein cylindrical sections (8) of the pivot pins (5) adjoining the axial ends and engaging in the bearing eyes (6) have a diameter corresponding to the diameter of the bearing eyes (6), characterized in thatthat the width of the handle dome (4) corresponds to the clear width of the guide shaft (11), two hinge pins (5) with each conical axle end are acted upon in opposite directions by the hinge pin spring (9), and each axle end interacts with a ramp shoulder (12) formed by a ramp. Motor vehicle door handle with a mounting bracket (1) rotatably supporting a transmission lever (2) and a handle bracket, wherein a handle dome (4) of the handle bracket (3) projects through a guide channel (11) of the mounting bracket (1) and is connected to the transmission lever (2) by means of a pivot pin (5) engaging in bearing eyes (6), wherein in an assembly position of the transmission lever (2) an axial end having a pointed end of the pivot pin (5), which is mounted in a pivot pin bore (10) and acted upon by the force of a pivot pin spring (9), runs onto a guide shoulder (12) during assembly and is axially guided back into the pivot bore (10) and subsequently automatically retracts into the bearing eyes (6), characterized by a retaining element (13) which holds the transmission lever (2) in a position arranged in the insertion direction of the handle dome (4) immediately behind the guide channel (11),in which a mounting shaft of the transmission lever (2) extending between two bearing legs (14) of the transmission lever (2) connects directly to the guide shaft (11). Motor vehicle door handle according to claim 1 or 3, characterized by two hinge pins (5) which are spring-loaded in opposite directions by the hinge pin spring (9). Motor vehicle door handle according to claim 1 or 3, characterized in that the axle ends are conical. Motor vehicle door handle according to claim 2 or 3, characterized in that the pivot pin bore (10) is assigned to the handle dome (4) and the bearing eye (6) to the transmission lever (2), wherein the distance between the bearing eyes corresponds to the width of the guide shaft (11). Motor vehicle door handle according to claim 1 or 2, characterized by a retaining element (13) which holds the transmission lever (2) in a position arranged in the insertion direction of the handle dome (4) immediately behind the guide shaft 11. Motor vehicle door handle according to one of claims 1, 2 or 4 to 7, characterized in that the cylindrical sections (8) of the pivot pins (6) adjoining the axle ends and engaging in the bearing eyes (6) have a diameter that corresponds to the diameter of the bearing eyes (6).

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