CN219119036U - Push rod of door driving mechanism - Google Patents

Abstract

The utility model belongs to the technical field of automobile door driving, and provides a push rod of a door driving mechanism, which comprises a push rod body, wherein one end of the push rod body is connected with a screw nut of the driving mechanism, the other end of the push rod body is connected with a vehicle body bracket, two side end parts of the push rod body are provided with hinge holes, and the hinge holes of the two side end parts at least comprise a joint bearing structure. The utility model has the advantages that the door opening and closing of the driving mechanism is smoother, the self-adaptive door, the hinge, the mounting surface of the vehicle body bracket, the mounting error and the like are realized, the influence factors such as the non-parallel axis of the vehicle body bracket and the hinge axis are solved, the push rod is provided with the axial limiting device, when the opening degree is maximum, the push rod limiting part is contacted with the driving mechanism shell to generate mechanical limiting, the push rod is connected with the screw rod nut through the pin shaft, and the pin shaft is axially fixed through the elastic pin or the retainer ring to prevent loosening.

Description

Push rod of door driving mechanism

Technical Field

The utility model belongs to the technical field of automobile door driving, and relates to a push rod of a door driving mechanism.

Background

The door driving mechanisms on the market are generally divided into the following types: 1. no push rod, lead screw lug connection is on the automobile body support: the screw rod stretches out and draws back, swings left and right, and has the defects that: lead screw nut makes complicacy, and the automobile body support is connected to the lead screw, and the lead screw is difficult to accomplish the surface anticorrosion, and some lead screw outsides adopt the bellows to seal, and when the lead screw stretches out and draws back, the bellows sags and lead screw thread friction, leads to the bellows to damage, and even the rubber foreign matter after wearing and tearing drops to the lead screw surface, leads to lead screw jamming abnormal sound etc. in the present electronic door actuating mechanism, especially the actuating mechanism of taking the push rod, conventional push rod only rotary motion, and there is the tolerance in car door, hinge, automobile body support installation face etc. to lead to door hinge and actuating mechanism automobile body support hinge nonparallel, has following defect: 1. door opening and closing clamping stagnation: when the driving mechanism operates, the operation plane of the push rod is not perpendicular to the axis of the hinge, and the push rod stretches and is blocked to generate abnormal sound and the like; 2. the clamping stagnation causes additional load to the motor operation, and seriously causes the damage of a door which cannot be opened or closed electrically, a driving mechanism or a vehicle door; 3. the jamming causes sudden increase of resistance when the door is opened and closed manually, influences smoothness, and even causes damage of the door, the driving mechanism or the vehicle door which cannot be opened and closed manually; 4. some driving mechanisms do not have push rods, and the practical screw rod performs rotary motion, so that the screw rod nut is complex to manufacture. The screw rod is connected with the vehicle body bracket, the surface of the screw rod is difficult to be corrosion-proof, some screw rods are sealed by adopting a corrugated pipe, when the screw rod stretches, the corrugated pipe sags and rubs with screw threads, so that the corrugated pipe is damaged, even worn rubber foreign matters fall off to the surface of the screw rod, and screw rod clamping abnormal sound and the like are caused; 5. in the current electric vehicle door driving mechanism, when the vehicle door is at the maximum opening, the screw-nut is used for mechanical limiting conventionally, so that the screw-nut is easy to damage, namely the driving mechanism is damaged.

Disclosure of Invention

The utility model aims at solving the technical problem of the prior art, and provides a push rod of a door driving mechanism which can be automatically aligned and can be axially limited.

The technical scheme adopted for solving the technical problems is as follows: the push rod of the door driving mechanism comprises a push rod body, one end of the push rod body is connected with a screw nut of the driving mechanism, and the other end of the push rod body is connected with a vehicle body bracket.

In the push rod of the door driving mechanism, the push rod body is provided with the limiting part, the limiting part is one of a straight surface and an arc surface, the limiting part is arranged on one side or the upper side and the lower side of the push rod body, and the push rod body is in a straight line shape or a curve shape.

In one mode, in the push rod of the door driving mechanism, one end of the push rod body is provided with a hinged hole, a first joint bearing is arranged in the hinged hole, a bearing step is arranged in the hinged hole and used for limiting the first joint bearing axially, a check ring for the first hole is arranged in the hinged hole, a first pin shaft screw is arranged in the hinged hole, the first pin shaft screw penetrates through the hinged hole and is connected with the bracket of the vehicle body, and the first pin shaft screw is hinged with the first joint bearing.

In the push rod of the door driving mechanism, the other end of the push rod body is provided with the two hinged holes, the pin shafts are connected in the two hinged holes in a hinged mode, the pin shafts are assembled in the screw rod nut, the screw rod nut is internally provided with the elastic pin holes, the elastic pin is assembled in the screw rod nut, one end of each pin shaft is provided with the V-shaped groove, and the elastic pin is assembled in the V-shaped groove and axially locks the pin shafts.

In the push rod of the door driving mechanism, the pin shaft is provided with the second hole check ring, and the second hole check ring is assembled in the check ring groove of the screw rod nut and used for limiting the axial direction of the pin shaft.

In the push rod of the door driving mechanism, the shaft check ring is arranged on the pin shaft, the pin shaft is fixed on the screw nut in an insert injection molding mode, the push rod body is assembled on the pin shaft, the pin shaft is provided with the check ring groove, and the shaft check ring is assembled in the pin shaft groove and used for limiting the axial direction of the pin shaft.

In the push rod of the door driving mechanism, the screw rod nut is provided with the pin shaft hole and the threaded hole, the pin shaft is assembled in the pin shaft hole of the screw rod nut, and the pin shaft passes through the pin shaft inner hole through the fixing screw to be fixed with the threaded hole in the screw rod nut.

In the push rod of the door driving mechanism, the second joint bearing is arranged on the second hinge hole, the two bushings are arranged on the first hinge hole, the second hinge bearing is internally hinged with a second pin shaft screw, an insert nut is arranged in the screw rod nut, and the second pin shaft screw is in threaded connection with the insert nut and is fixed in the screw rod nut.

In the push rod of the door driving mechanism, the first hinge hole is provided with the bracket rivet, and the bracket rivet hinges the vehicle body bracket on the first hinge hole and limits the axial movement of the bushing.

In the push rod of the door driving mechanism, the first hinge hole is provided with the third joint bearing, the first hinge hole is provided with the bracket rivet, and the bracket rivet is used for hinging the vehicle body bracket on the first hinge hole and limiting the axial movement of the third joint bearing.

In the push rod of the door driving mechanism, the first hinge hole and the second hinge hole are provided with assembly openings, and the knuckle bearing is vertically placed in the assembly openings and then rotated into the hole.

Compared with the prior art, the utility model has the advantages that the door opening and closing of the driving mechanism is smoother, the self-adaptive vehicle door, the hinge, the mounting surface of the vehicle body bracket, the mounting error and the like are realized, the influence factors such as the non-parallel axis of the vehicle body bracket and the hinge axis are solved, the axial limiting device is arranged on the push rod, when the opening degree is the maximum, the push rod limiting part is contacted with the driving mechanism shell to generate mechanical limiting, the internal parts of the driving mechanism are protected, the axial limiting device of the push rod is arranged on the limiting surface, the limiting surface is arc-shaped, the push rod is still well matched with the shell surface after swinging, the axial limiting function is realized, the push rod is connected with the screw rod nut by adopting a pin shaft, and the pin shaft is axially fixed by using an elastic pin or a retainer ring to prevent looseness.

Drawings

FIG. 1 is a schematic view of the installation of the present pushrod and door drive mechanism;

FIG. 2 is a schematic view of the outer structure of the present putter;

FIG. 3 is a schematic view of a first mounting means for the push rod and the end of the lead screw nut;

FIG. 4 is a schematic view of a second mounting means for the push rod and the end of the lead screw nut;

FIG. 5 is a schematic view of a third mounting means for the push rod and the end of the lead screw nut;

FIG. 6 is a schematic view of the structure of the push rod with a single knuckle bearing;

FIG. 7 is a schematic view of the assembled structure of FIG. 6;

FIG. 8 is a schematic view of the structure of the present pushrod with dual knuckle bearing;

FIG. 9 is a schematic view of the assembled structure of FIG. 8;

FIG. 10 is a schematic view of the structure of the knuckle bearing prior to assembly;

fig. 11 is a schematic view of the assembled knuckle bearing.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present utility model.

In the drawings, a motor assembly 100; a screw 200; a lead screw nut 300; a push rod 400; a push rod body 500; a limit part 501; a body bracket 600; articulating a hole 700; two holes 800 are hinged; a first knuckle bearing 900; a first hole retainer ring 1000; a first pin screw 1001; a pin 1002; a shaft retainer 1003; a set screw 1004; a second knuckle bearing 1005; a bushing 1006; a second pin screw 1007; insert nut 1008; bracket rivet 1009; a third knuckle bearing 1010; a second hole collar 1011; fitting opening 1012.

As shown in fig. 1, the push rod of the door driving mechanism is mainly used together with a door driving mechanism, when the internal motor assembly 100 starts to operate, the internal motor assembly is transmitted to the screw rod 200 to rotate through the driving mechanism to push the screw rod nut 300 to linearly move, so that the push rod 400 generates push/pull force to realize the electric opening/closing action of the door.

As shown in fig. 2, specifically, the push rod 400 includes a push rod body 500, one end of the push rod body 500 is connected with a screw nut 300 of a driving mechanism, the other end is connected with a vehicle body bracket 600, a limiting part 501 is arranged on the push rod body 500, the limiting part 501 is one of a straight surface and an arc surface, the limiting part 501 is arranged on one side or upper and lower sides of the push rod body 500, the push rod body 500 is in a straight line shape or a curve shape, when the vehicle door is at the maximum opening, the limiting part 501 can be matched with the end surface of a driver shell to perform axial limiting, in addition, the appearance surface of the push rod body 500 is smoother and can perform a sealing function with a sealing ring, two side end parts of the push rod body 500 are provided with hinge holes, and the hinge holes of the two side end parts at least comprise one joint bearing structure, so that a single joint bearing structure can also be adopted, and a double joint bearing structure can be adopted to satisfy the push rod aligning function, so that the push rod can swing a certain angle during movement, thereby ensuring reliability.

The following will specifically explain.

Here, as shown in fig. 1, one end of the push rod body 500 is provided with a hinge-joint first hole 700, a first knuckle bearing 900 is arranged in the hinge-joint first hole 700, a bearing step is arranged in the hinge-joint first hole 700 and used for axially limiting the first knuckle bearing 900, a first hole check ring 1000 is assembled in the hinge-joint first hole 700, a first pin shaft screw 1001 is arranged on the hinge-joint first hole 700, the first pin shaft screw 1001 penetrates through the hinge-joint first hole 700 and is connected with a vehicle body bracket 600, the first pin shaft screw 1001 is hinged with the first knuckle bearing 900, as shown in fig. 3, the other end of the push rod body 500 is provided with a hinge-joint second hole 800, a pin shaft 1002 is hinged in the hinge-joint second hole 800, the pin shaft 1002 is assembled in the screw nut 300, an elastic pin hole is arranged in the screw nut 300, one end of the pin shaft 1002 is provided with a V-shaped groove, the elastic pin is assembled in the V-shaped groove and axially locks the pin shaft 1002, the fixing of the pin 1002 of the hinge two hole 800 may also be performed in the first mode, for example, the pin 1002 is provided with a second hole-used retainer 1011, the second hole-used retainer 1011 is assembled in a retainer groove of the screw nut 300 and is used for axial limitation of the pin 1002, as shown in fig. 4, the fixing of the pin 1002 of the hinge two hole 800 may also be performed in the second mode, the pin 1002 is provided with a shaft-used retainer 1003, the pin 1002 is fixed to the screw nut 300 by insert molding, the push rod body 500 is assembled on the pin 1002, the pin 1002 is provided with a retainer groove, the shaft-used retainer 1003 is assembled in a pin groove and is used for axial limitation of the pin 1002, as shown in fig. 5, the fixing of the pin 1002 of the hinge two hole 800 may also be performed in the third mode, the screw nut 300 is provided with a pin hole and a threaded hole, the pin 1002 is assembled in the screw nut 300 pin hole and passes through the pin hole by the fixing screw 1004, is fixed with a threaded hole in the lead screw nut 300.

As shown in fig. 6 and 7, as another mode, a second knuckle bearing 1005 is provided on the hinge two hole 800, two bushings 1006 are provided on the hinge one hole 700, a second pin screw 1007 is hinged inside the second knuckle bearing 1005, an insert nut 1008 is provided inside the lead screw nut 300, the second pin screw 1007 is screwed with the insert nut 1008 and fixed inside the lead screw nut 300, a bracket rivet 1009 is provided on the hinge one hole 700, the bracket rivet 1009 articulates the body bracket 600 on the hinge one hole 700 and limits the axial play of the bushings 1006, thus realizing the centering function of the push rod by utilizing the knuckle bearing structure of the end of the lead screw nut 300, as another mode, as shown in fig. 8 and 9, a third knuckle bearing 1010 is provided on the hinge one hole 700, a bracket rivet 1009 is provided on the hinge one hole 700, the bracket rivet 1009 articulates the vehicle body bracket 600 on the first articulation hole 700 and limits the axial movement of the third joint bearing 1010, that is, the first articulation hole 700 and the second articulation hole 800 are both joint bearings, so that the swinging angle range of the push rod is larger, the flexibility is high, the push rod can be used for driving the mechanism to avoid the parts around the vehicle door, as shown in fig. 10 and 11, the first articulation hole 700 and the second articulation hole 800 are internally provided with an assembly opening 1012, the joint bearing is vertically placed from the assembly opening 1012 and then rotates into the hole, the size of the articulation hole is just the axial thickness size of the joint bearing, so that the joint bearing can be vertically placed from the opening and then rotates into the hole, the outer surface of the joint bearing and the inner surface of the articulation hole are spherical surfaces, friction fit is generated between the two materials, the assembly mode is simple and clear, and the processing technology is simplified.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the scope of the utility model as defined in the accompanying claims.

Claims (10)

1. The push rod of the door driving mechanism comprises a push rod body, one end of the push rod body is connected with a screw nut of the driving mechanism, and the other end of the push rod body is connected with a vehicle body bracket.

2. The push rod of a door driving mechanism according to claim 1, wherein the push rod body is provided with a limiting part, the limiting part is one of a straight surface and an arc surface, the limiting part is arranged on one side or the upper side and the lower side of the push rod body, and the push rod body is in a straight line shape or a curve shape.

3. The pushrod of a door driving mechanism according to claim 2, wherein one end of the pushrod body is provided with a hinge hole, a first knuckle bearing is provided in the hinge hole, a bearing step is provided in the hinge hole and used for axial limitation of the first knuckle bearing, a check ring for the first hole is provided in the hinge hole, a first pin screw is provided in the hinge hole, the first pin screw penetrates through the hinge hole and is connected with the bracket of the vehicle body, and the first pin screw is hinged with the first knuckle bearing.

4. A push rod of a door driving mechanism according to claim 3, wherein the other end of the push rod body is provided with a hinge two hole, a pin shaft is hinged in the hinge two hole, the pin shaft is assembled in the screw-nut, an elastic pin hole is arranged in the screw-nut, an elastic pin is assembled in the screw-nut, one end of the pin shaft is provided with a V-shaped groove, and the elastic pin is assembled in the V-shaped groove and axially locks the pin shaft.

5. The pushrod of a door actuator of claim 4, wherein said pin is provided with a second hole retainer which fits within a retainer groove of the spindle nut and is used for axial retention of the pin.

6. The push rod of a door driving mechanism according to claim 4, wherein the pin shaft is provided with a shaft retainer ring, the pin shaft is fixed on the screw nut by insert injection molding, the push rod body is assembled on the pin shaft, the pin shaft is provided with a retainer ring groove, and the shaft retainer ring is assembled in the pin shaft groove and used for limiting the axial direction of the pin shaft.

7. The pushrod of a door driving mechanism as claimed in claim 4, wherein the screw nut has a pin hole and a screw hole, and the pin is assembled in the pin hole of the screw nut and is fixed to the screw hole of the screw nut by passing through the pin hole by a fixing screw.

8. The pushrod of claim 4, wherein a second knuckle bearing is disposed in the second hinge hole, a second pin screw is hinged in the second knuckle bearing, an insert nut is disposed in the screw-nut, and the second pin screw is screwed with the insert nut and is fixed in the screw-nut.

9. A push rod for a door driving mechanism according to claim 8, wherein two bushings are provided in the hinge hole, and wherein a bracket rivet is provided in the hinge hole, the bracket rivet hinging the body bracket to the hinge hole and limiting axial movement of the bushings.

10. The pushrod of claim 8, wherein the hinge hole has a third knuckle bearing and the hinge hole has a bracket rivet that articulates the body bracket to the hinge hole and limits axial play of the third knuckle bearing.

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