Driving connection structure and vehicle door opening and closing mechanism

Abstract

The utility model provides a driving connection structure, which is applied to a vehicle door opening and closing mechanism, and comprises a shell, a driving part and a driving part, the screw rod is rotatably arranged in the shell; the push rod is adjacent to and parallel to the lead screw, and the first end of the push rod is used for being fixedly connected with the fixed side of a vehicle body; the nut comprises a screw joint part and a sleeve joint part extending from the screw joint part, the screw joint part is in screw joint with the lead screw, the sleeve joint part is provided with a sleeve joint groove, the second end of the push rod is contained and limited in the sleeve joint groove, and the whole driving connection structure is stable. The utility model further provides a vehicle door opening and closing mechanism comprising the driving connection structure.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile door opening and closing, and more specifically, particularly relates to a driving connection structure and a door opening and closing mechanism including the driving connection structure. Background Art

[0002] With the advent of the era of artificial intelligence, intelligent automation technology has continuously penetrated into all aspects of our lives, making people's lives more convenient, faster, easier and more comfortable, and greatly improving time efficiency. Taking the rapidly developing intelligent vehicles as an example, in recent years, intelligent electric door opening technology has been deeply pursued by the market. While liberating users' hands, it has brought an improvement in the quality of life and has gradually become a standard configuration for many new models. This function realizes the automatic opening and closing of the vehicle door through the door opening and closing mechanism.

[0003] The existing door opening and closing mechanism realizes the driving control of opening and closing the door through the driving connection structure. Among them, the driving connection structure is connected by a lead screw and drives the push rod to move in the horizontal direction, and then the power output is completed through the push rod. Generally, the lead screw and the push rod are connected by a nut. However, the existing nut has an unstable connection structure for the lead screw and the push rod, and is prone to problems such as loosening, detachment, and deformation due to connection stress after long-term use, which may further cause failures, abnormal noises, or damages to the door opening and closing mechanism. It is necessary to propose an effective improvement plan. Summary of the Utility Model

[0004] In view of the above content, the utility model aims to solve at least one of the technical problems existing in the prior art. For this reason, the utility model proposes a driving connection structure and a door opening and closing mechanism including the driving connection structure. The driving connection structure stably connects the lead screw and the push rod, and has high driving connection stability. At the same time, the driving connection structure and the door opening and closing mechanism have a simple structure and are suitable for application in large-scale industrial production.

[0005] For this reason, in the first aspect, an embodiment of the utility model provides a driving connection structure, which is applied to a door opening and closing mechanism. The driving connection structure includes:

[0006] A housing for fixedly connecting the movable side of the door;

[0007] A lead screw rotatably arranged in the housing;

[0008] A push rod adjacent to and parallel to the lead screw, and the first end of the push rod is used for fixedly connecting the fixed side of the vehicle body;

[0009] A nut including a threaded portion and a socket portion extending from the threaded portion. The threaded portion is threadedly connected to the lead screw, and the socket portion is provided with a socket groove. The second end of the push rod is received and limited in the socket groove.

[0010] Preferably, a connecting shaft is further included. A collar is provided at the second end of the push rod. The connecting shaft passes through the socket part and the collar in a direction perpendicular to the push rod. The connecting shaft is fixedly connected to the socket part relatively, and the connecting shaft is movably connected to the collar.

[0011] Preferably, the socket part includes a connecting wall connecting the screwed part, an extending wall extending from the connecting wall away from the screwed part, and a supporting wall connecting the extending wall and parallel to the connecting wall. The connecting wall, the extending wall and the supporting wall jointly enclose the socket groove. The connecting shaft passes through the supporting wall and the collar and is fixed to the connecting wall.

[0012] Preferably, the supporting wall is provided with a through hole, the connecting wall is provided with a connecting hole, and the connecting shaft passes through the through hole and the collar and is fixed to the connecting hole.

[0013] Preferably, a pin shaft is further included. The nut further includes an extending part located between the screwed part and the socket part. The extending part is provided with a first pin hole parallel to the push rod, and the connecting shaft is provided with a corresponding second pin hole. The pin shaft passes through the first pin hole and the second pin hole.

[0014] Preferably, a ball bearing is further included. The ball bearing is sleeved between the connecting shaft and the collar.

[0015] Preferably, the connecting shaft includes a socket shaft and a fixed shaft distributed along the axial direction. The socket shaft is correspondingly arranged in the socket groove, and the fixed shaft is fixedly connected to the inside of the nut.

[0016] Preferably, a pin shaft is further included. The nut is provided with a first pin hole, and the fixed shaft is provided with a second pin hole. The pin shaft passes through the first pin hole and the second pin hole; and / or,

[0017] The outer diameter of the fixed shaft is smaller than that of the socket shaft; and / or,

[0018] The socket shaft is a circular shaft, and the fixed shaft is a non-circular shaft; and / or,

[0019] A flange is provided at the end edge of the socket shaft far from the fixed shaft; and / or,

[0020] An adjusting groove is provided on the end face of the socket shaft far from the fixed shaft.

[0021] Preferably, the screwed part is provided with a threaded hole adapted to the lead screw; and / or,

[0022] The nut is provided with a plurality of through grooves; and / or,

[0023] The nut is integrally injection molded.

[0024] In a second aspect, an embodiment of the present utility model further provides a door opening and closing mechanism, which includes a driving structure, a transmission structure, and the driving connection structure according to the first aspect. The driving structure can drive the screw rod to rotate through the transmission structure.

[0025] For the driving connection structure and the door opening and closing mechanism provided by the present utility model, the screw rod and the push rod are connected by a nut, wherein the nut is screwed to the screw rod, and the nut is provided with a socket groove for socketing the end of the push rod. The screw rod and the push rod are respectively connected to the inside of the nut. The connection stress between the nut and the screw rod and the push rod is transferred to the inside of the nut, and the overall connection structure is more stable, avoiding problems such as instability, abnormal noise, or damage of the connection structure caused by complex stress in the multi-component connection structure. On the premise of ensuring driving conduction, the connection stability of the driving structure is further improved, and the user experience is improved. Description of the Drawings

[0026] Figure 1 is a schematic cross-sectional structure diagram of the door opening and closing mechanism provided by an embodiment of the present utility model;

[0027] Figure 2 is Figure 1 an enlarged view of part A in

[0028] Figure 3 a schematic three-dimensional structure diagram of the nut in an embodiment of the present utility model;

[0029] Figure 4 a schematic three-dimensional structure diagram of the connecting shaft in an embodiment of the present utility model. Detailed Embodiments

[0030] The embodiments of the present utility model are described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model, but should not be construed as limiting the present utility model.

[0031] The following disclosure provides many different embodiments or examples for implementing different structures of the present utility model. To simplify the disclosure of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present utility model. In addition, the present utility model may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present utility model provides examples of various specific processes and materials, but those of ordinary skill in the art can realize the applicability of other processes and / or the use of other materials.

[0032] Please refer to Figure 1 , the object of the present utility model is to provide a driving connection structure 100, which is applied to a door opening and closing mechanism 200. The door opening and closing mechanism 200 includes a driving structure 201, a transmission structure 202 and the driving connection structure 100. The driving structure 201 is connected to the transmission structure 202, the transmission structure 202 is connected to the driving connection structure 100, and the driving structure 201 drives the driving connection structure 100 through the transmission structure 202.

[0033] Specifically, the driving structure 201 is set as a driving motor. The transmission structure 202 is set as a gear transmission box. In another embodiment, the vehicle opening and closing mechanism 200 further includes a speed reduction structure 203, and the speed reduction structure 203 is disposed between the driving structure 201 and the transmission structure 202.

[0034] Please also refer to Figures 1 to 4 , the driving connection structure 100 includes:

[0035] A housing 10 for fixedly connecting the movable side of the door;

[0036] A lead screw 20 rotatably disposed in the housing 10;

[0037] A push rod 30 adjacent to and parallel to the lead screw 20. The first end 31 of the push rod 30 is used for fixedly connecting the fixed side of the vehicle body;

[0038] A nut 40 includes a threaded portion 41 and a socket portion 42 extending from the threaded portion 41. The threaded portion 41 is screwed to the lead screw 20, and the socket portion 42 is provided with a socket groove 421. The second end 32 of the push rod 30 is received and limited in the socket groove 421.

[0039] In this embodiment, the threaded portion 41 and the socket portion 42 of the nut 40 are respectively connected to the lead screw 20 and the push rod 30. The lead screw 20 and the push rod 30 are respectively connected to the inside of the nut 40, and the stresses of the connections between the components are converted into the internal stresses of the nut 40, which can effectively avoid the damage to the stability of the connection structure caused by the stresses under long-term use, thereby ensuring a stable driving connection.

[0040] In the door opening and closing mechanism 200, the lead screw 20 is in transmission connection with the transmission structure 202, and the power transmission path is the driving structure 201, the speed reduction structure 203, the transmission mechanism 202, the lead screw 20, the nut 40 and the push rod 30.

[0041] Further, the driving connection structure 100 further includes a connecting shaft 50. A collar 33 is provided at the second end 32 of the push rod 30. The connecting shaft 50 passes through the socket portion 42 and the collar 33 in a direction perpendicular to the push rod 30. The connecting shaft 50 is fixedly connected to the socket portion 42 relatively, and the connecting shaft 50 is movably connected to the collar 33.

[0042] In this embodiment, the socket of the push rod 30 is realized by the cooperation of the connecting shaft 50 and the nut 40. The connecting shaft 50 limits the push rod 30 in the socket groove 421, realizing the stable connection between the nut 40 and the push rod 30. Among them, the connecting shaft 50 can be directly fixedly connected to the socket portion 42, or can be fixedly connected to other positions of the nut 40 to achieve relative fixed connection.

[0043] It can be understood that in other embodiments, the push rod 30 can be set to be directly connected to the socket portion 42 of the nut 40, thus omitting the connecting shaft 50.

[0044] Further, the socket portion 42 includes a connecting wall 422 connecting the screwing portion 41, an extending wall 423 extending from the connecting wall 422 away from the screwing portion 41, and a supporting wall 424 connecting the extending wall 423 and parallel to the connecting wall 422. The connecting wall 422, the extending wall 423 and the supporting wall 424 together enclose the socket groove 421. The connecting shaft 50 passes through the supporting wall 422 and the collar 33 and is fixed to the connecting wall 422.

[0045] In this embodiment, the socket groove 421 is enclosed by setting the connecting wall 422, the extending wall 423 and the supporting wall 424. Specifically, the extending wall 423 is actually set as a structure with three sides connected and one side open, thus enclosing the socket groove 421 with one side open. The collar 33 of the push rod 30 is received in the socket groove 421 and is specifically supported by the supporting wall 424. During long-term driving control, the stress of the push rod 30 on the nut 40 in the non-driving direction is received by the supporting wall 424 or the connecting wall 422, converting the connecting stress into the internal stress of the nut 40 and improving the stability of the driving structure.

[0046] Further, the supporting wall 424 is provided with a through hole 425, and the connecting wall 422 is provided with a connecting hole 426. The connecting shaft 50 passes through the through hole 426 and the collar 33 and is fixed to the connecting hole 426.

[0047] Further, the drive connection structure 100 further includes a pin shaft 60. The nut 40 further includes an extension portion 43 located between the screwing portion 41 and the socket portion 42. The extension portion 43 is provided with a first pin hole 431 parallel to the push rod 30. The connecting shaft 50 is provided with a corresponding second pin hole 51. The pin shaft 60 passes through the first pin hole 431 and the second pin hole 51. In this embodiment, the connecting shaft 50 and the nut 40 are fixed by the pin shaft 60. It can be understood that in other embodiments, other structures can also be set. For example, the top end of the connecting shaft 50 can be fixed to the extension portion 43 by screwing. In an embodiment without the extension portion 43, the top end of the connecting shaft 50 can also be fixed to the connecting wall 422 or other parts of the nut 40 by screwing.

[0048] Further, the drive connection structure 100 further includes a ball bearing 70. The ball bearing 70 is sleeved between the connecting shaft 50 and the collar 33. In this embodiment, the nut 40 is connected to the push rod 30 through the connecting shaft 50 and the ball bearing 70, realizing the rotational connection between the nut 40 and the push rod 30.

[0049] Further, the connecting shaft 50 includes a socket shaft 52 and a fixed shaft 53 distributed along the axial direction. The socket shaft 52 is correspondingly arranged in the socket groove 421. The fixed shaft 53 is fixedly connected to the inside of the nut 40. In this embodiment, by setting the connecting shaft 50 as a segmented structure, it is respectively correspondingly arranged in the socket groove 421 and correspondingly connected to the inside of the nut 40. The fixed shaft 53 is specifically connected to the area adjacent to the screwing portion 41 in the upper part of the socket groove 421.

[0050] Further, in another embodiment, the drive connection structure 100 further includes a pin shaft 60. The nut 40 is provided with a first pin hole 431. The fixed shaft 53 is provided with a second pin hole 51. The pin shaft 60 passes through the first pin hole 431 and the second pin hole 51.

[0051] Further, in another embodiment, the outer diameter of the fixed shaft 53 is smaller than that of the socket shaft 52. In this embodiment, the connecting shaft is set as a stepped shaft. The size of the fixed shaft 53 is smaller, which is convenient for the operation of passing through the nut 40 and the assembly process. In a preferred embodiment, the second pin hole 51 is arranged on the fixed shaft 53.

[0052] Further, in another embodiment, the socket shaft 52 is a circular shaft, and the fixed shaft 53 is a non-circular shaft. In this embodiment, the socket shaft 52 is specifically a circular shaft, which is suitable for matching with the collar 33. The fixed shaft 53 is set as a non-circular shaft, which is beneficial to maintaining the angle of connection with the nut 40, so that the connecting shaft 50 can accurately limit and cooperate with the nut 40.

[0053] Further, in another embodiment, a flange 54 is provided at an end edge of the socket shaft 52 away from the fixed shaft 53. In this embodiment, the flange 54 is adapted to the outer end face of the nut 40 to achieve the limiting effect on the connection between the connecting shaft 50 and the nut 40.

[0054] Further, in another embodiment, an adjustment groove 55 is provided on an end face of the socket shaft 52 away from the fixed shaft 53. In this embodiment, the adjustment groove 55 is adapted to an external adjustment tool, and the connecting shaft 50 is rotationally adjusted by connecting the adjustment tool to the adjustment groove 55.

[0055] Further, the screwing portion 41 is provided with a screw hole 411 adapted to the lead screw 20.

[0056] Further, the nut 40 is provided with a plurality of through grooves 44. In this embodiment, by providing the through grooves 44, the mass of the nut 40 can be effectively reduced, which is beneficial to achieving lightweight. In addition, the structure with multiple through grooves can further optimize the internal stress structure of the nut 40 and improve the driving connection stability.

[0057] Further, the nut 40 is integrally injection molded. By integrally injection molding the nut 40, the cost is further reduced while ensuring the stability of the connection structure.

[0058] The driving connection structure 100 and the door opening and closing mechanism 200 provided by the present utility model connect the lead screw 20 and the push rod 30 through the nut 40, wherein the nut 40 is screwed to the lead screw 20, and the nut 40 is provided with a socket groove 421 for socketing the end of the push rod 30. The lead screw 20 and the push rod 30 are respectively connected to the inside of the nut 40, and the connection stresses between the nut 40 and the lead screw 20 and between the nut 40 and the push rod 30 are all transferred to the inside of the nut 40. The overall connection structure is more stable, avoiding problems such as connection structure instability, failure, abnormal noise or damage caused by complex stresses in the multi-component connection structure. On the premise of ensuring driving conduction, the connection stability of the driving structure is further improved, and the user experience is improved.

[0059] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0060] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A driving connection structure, characterized in that, Applied to a door opening and closing mechanism, the driving connection structure includes: A housing for fixedly connecting to the movable side of the door; A lead screw rotatably arranged in the housing; A push rod adjacent to and parallel to the lead screw, with the first end of the push rod for fixedly connecting to the fixed side of the vehicle body; A nut including a threaded portion and a socket portion extending from the threaded portion. The threaded portion is threadedly connected to the lead screw. The socket portion is provided with a socket groove, and the second end of the push rod is received and limited in the socket groove.

2. The drive connection structure according to claim 1, wherein It further includes a connecting shaft. A collar is provided at the second end of the push rod. The connecting shaft passes through the socket portion and the collar in a direction perpendicular to the push rod. The connecting shaft is fixedly connected to the socket portion relatively, and the connecting shaft is movably connected to the collar.

3. The drive connection structure according to claim 2, characterized in that, The socket portion includes a connecting wall connecting the threaded portion, an extending wall extending from the connecting wall away from the threaded portion, and a supporting wall connecting the extending wall and parallel to the connecting wall. The connecting wall, the extending wall and the supporting wall jointly enclose the socket groove. The connecting shaft passes through the supporting wall and the collar and is fixed to the connecting wall.

4. The drive connection structure according to claim 3, wherein, The supporting wall is provided with a through hole, and the connecting wall is provided with a connecting hole. The connecting shaft passes through the through hole and the collar and is fixed to the connecting hole.

5. The drive connection structure according to claim 4, characterized in that It further includes a pin shaft. The nut further includes an extending portion between the threaded portion and the socket portion. The extending portion is provided with a first pin shaft hole parallel to the push rod. The connecting shaft is provided with a corresponding second pin shaft hole. The pin shaft passes through the first pin shaft hole and the second pin shaft hole.

6. The drive connection structure according to claim 2, characterized in that, It further includes a ball bearing sleeved between the connecting shaft and the collar.

7. The drive connection structure according to claim 2, characterized in that The connecting shaft includes a socket shaft and a fixed shaft distributed axially. The socket shaft is correspondingly arranged in the socket groove, and the fixed shaft is fixedly connected to the inside of the nut.

8. The drive connection structure according to claim 7, characterized in that, It further includes a pin shaft. The nut is provided with a first pin shaft hole, and the fixed shaft is provided with a second pin shaft hole. The pin shaft passes through the first pin shaft hole and the second pin shaft hole; and / or, The outer diameter of the fixed shaft is smaller than that of the socket shaft; and / or, The socket shaft is a circular shaft, and the fixed shaft is a non-circular shaft; and / or, A flange is provided at the end edge of the socket shaft away from the fixed shaft; and / or, An adjustment groove is provided on the end face of the socket shaft away from the fixed shaft.

9. The drive connection structure according to claim 1, wherein The threaded portion is provided with a threaded hole adapted to the lead screw; and / or, The nut is provided with a plurality of through grooves; and / or, The nut is integrally injection molded.

10. A door opening and closing mechanism, characterized in that, It includes a driving structure, a transmission structure and the driving connection structure according to any one of claims 1-9. The driving structure can drive the lead screw to rotate through the transmission structure.

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