Push rod guide sliding block structure of electric door driving device

Abstract

The utility model relates to a push rod guide sliding block structure of an electric vehicle door driving device, which is arranged in a shell and comprises a lead screw in transmission connection with a driving part, a vehicle door opening and closing push rod and a driving sliding block, and the driving sliding block is provided with a first hole in threaded connection with the lead screw and a second hole in insertion connection with the vehicle door opening and closing push rod; a guide groove is formed in the shell in the axial direction of the lead screw in a full-length mode, and a flange matched with the guide groove in a sliding mode is arranged on the driving sliding block. The convex structure flanges symmetrically distributed on the two sides of the push rod sliding block slide in the guide grooves of the lower bottom shell and the upper cover shell, the guide grooves play a role in restraining and guiding the push rod sliding block, and when the vehicle door opening and closing push rod is stressed in the direction opposite to the stress direction of the lead screw nut, the lead screw nut tends to deflect; the first sliding groove and the second sliding groove are matched with the flange so that the push rod sliding block can move along the direction line K of the shell guide groove, and therefore the lead screw axis G and the lead screw nut axis H are kept collinear or deflected as little as possible. According to the structure, the risks that resistance between the lead screw and the lead screw nut is increased, abrasion is aggravated, and abnormal sound is generated can be eliminated under the condition that no guide rail is additionally arranged.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile parts, and particularly relates to a push rod guide sliding block structure of an electric door driving device. Background Art

[0002] With the development of automobile electrification and intelligence, the electric opening and closing of automobile doors has gradually become popular. The configuration rate of electric tailgate has exceeded 50%, and electric side doors have also appeared on a few high-end models. As the core component of electric side doors, the electric door drive device is still in the early stage of industry development. Although the existing products on the market have achieved basic functions and performance, they are insufficient to varying degrees in terms of higher-level requirements such as consistency, reliability, comfort and cost, and the maturity of the product needs to be continuously improved. When the traditional drive device drives the push rod to open and close the door, the drive unit needs to apply a driving force, and the driving force must be transmitted to the push rod with the help of a transmission component, so as to control the movement of the push rod to open and close the door; and when the push rod is in use, the screw nut deflects along the screw axis after the push rod slider is subjected to force, resulting in increased resistance, increased wear, abnormal noise and other problems. Therefore, we propose a push rod guide slider structure for an electric door drive device to solve the above problems. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a push rod guide slider structure of an electric door drive device, which solves the problem that after the push rod slider is subjected to force, the lead screw nut deflects along the lead screw axis, resulting in increased resistance, increased wear and abnormal noise.

[0004] The utility model is realized by the following scheme: a push rod guide slider structure of an electric door driving device is arranged inside a housing, comprising a screw rod connected to a driving part, a door opening and closing push rod and a driving slider, wherein the driving slider is provided with a first hole for the screw rod to be screwed and connected, and a second hole for the door opening and closing push rod to be inserted;

[0005] The housing is provided with a guide groove along the axial direction of the screw rod, and the driving slider is provided with a flange that is slidably matched with the guide groove.

[0006] The utility model further improves the push rod guide slider structure of the electric door driving device in that the driving slider comprises a screw nut and a push rod slider;

[0007] The first hole is formed in the screw nut, the screw nut is provided with an external thread, and the push rod slider is provided with an internal thread channel, which is screwed and connected to the outside of the screw nut through the internal thread channel;

[0008] The second hole is opened on the push rod slider and is parallel to the internal thread channel, and the flange is arranged outside the push rod slider.

[0009] A further improvement on the push rod guide slider structure of an electric door driving device of the utility model is that two guide grooves are relatively arranged, the number of the flanges is two and they are relatively arranged on the opposite sides of the push rod slider, and the two flanges are respectively slidably matched with the two guide grooves.

[0010] The utility model further improves the push rod guide slider structure of an electric door driving device in that the housing is formed by docking an upper cover housing and a lower bottom housing, and two guide grooves are respectively arranged on the upper cover housing and the lower bottom housing.

[0011] A further improvement on the push rod guide slider structure of an electric door drive device of the utility model is that a pin hole connected with the second hole is also opened on the push rod slider, a pin nut is clamped inside the pin hole, a through opening connected with the pin hole is radially penetrated along the axis on the door opening and closing push rod, and a pin is arranged inside the pin hole and is penetrated inside the through opening and is threadedly connected with the pin nut.

[0012] A further improvement on the push rod guide slider structure of an electric door driving device of the utility model is that a supporting hole is provided inside the shell, a bushing is embedded in the supporting hole, one end of the screw rod is passed through the bushing, and a bearing is provided at the other end of the screw rod, and the bearing is connected to the shell.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model slides in the guide grooves of the lower bottom shell body and the upper cover shell body through the protruding structural flanges symmetrically distributed on both sides of the push rod slider, and the guide grooves play a restraining and guiding role on the push rod slider; when the door opening and closing push rod is subjected to force in a direction opposite to that of the lead screw nut, the lead screw nut tends to deflect, and the guide groove and the flange cooperate to keep the push rod slider moving along the guide groove direction line K of the shell body, thereby keeping the lead screw axis G and the lead screw nut axis H in the same line or with as small a deflection as possible, this structure can eliminate the risks of increased resistance between the lead screw and the lead screw nut, increased wear, abnormal noise, etc. without adding additional guide rails. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The exploded schematic diagram of the electric door driving device of the utility model is shown.

[0016] Figure 2 The schematic diagram of the position of the push rod slider of the utility model is shown.

[0017] Figure 3 A schematic diagram of the deflection of the push rod slider of the utility model is shown.

[0018] Figure 4The utility model shows a schematic diagram of the cross-sectional structure of the push rod slider position.

[0019] In the figure: 11, lower shell body; 111, guide groove; 13, door opening and closing push rod; 181, screw rod; 182, bushing; 183, bearing; 19, driving slider; 191, screw rod nut; 192, push rod slider; 1921, flange; 193, pin; 194, pin nut; 20, upper cover shell body; 21, driving part. DETAILED DESCRIPTION

[0020] In order to solve the problem that the screw nut deflects along the screw axis after the push rod slider is subjected to force, resulting in increased resistance, aggravated wear and abnormal noise, the utility model provides a push rod guide slider structure of an electric door drive device. The push rod guide slider structure of an electric door drive device is further described below with specific embodiments combined with the accompanying drawings.

[0021] See also Figure 1 to Figure 4 As shown, a push rod guide slider structure of an electric door driving device is arranged inside a housing, comprising a screw rod 181 connected to a driving part, a door opening and closing push rod 13 and a driving slider 19, wherein the driving slider 19 is provided with a first hole for screwing the screw rod 181 and a second hole for plugging the door opening and closing push rod 13;

[0022] A guide groove 111 is provided on the housing along the axial direction of the screw rod, and a flange 1921 which is slidably matched with the guide groove 111 is provided on the driving slider 19 .

[0023] Specifically, the drive unit 21 inside the drive device drives the screw rod 181 to rotate, which can drive the driving slider 19 to move and adjust, thereby driving the door opening and closing push rod 13 to move and adjust, so as to realize the door opening and closing operation; the guide groove 111 plays a restraining and guiding role on the driving slider 19; when the force on the door opening and closing push rod 13 is opposite to the force direction of the screw nut 191, the screw nut 191 tends to deflect, and the guide groove 111 cooperates with the flange 1921 to keep the push rod slider 192 moving along the shell guide groove direction line K, thereby keeping the axis G of the screw rod 181 and the axis H of the screw nut 191 colinear or as small as possible. This structure can eliminate the risks of increased resistance, increased wear, and abnormal noise between the screw rod 181 and the screw nut 191 without adding additional guide rails.

[0024] The driving slider 19 includes a screw nut 191 and a push rod slider 192;

[0025] The first hole is formed in the screw nut 191, the screw nut 191 is provided with an external thread, and the push rod slider 192 is provided with an internal thread channel, which is screwed to the outside of the screw nut 191 through the internal thread channel;

[0026] The second hole is opened on the push rod slider 192 and is parallel to the internal thread channel, and the flange 1921 is arranged outside the push rod slider 192 .

[0027] A first hole is provided on the screw nut 191 for threaded connection to the outside of the screw 181, and the screw nut 191 can be driven to slide with the push rod slider 192 through the transmission of the screw 181; the second hole provided on the push rod slider 192 is used to connect the door opening and closing push rod 13, and the sliding of the push rod slider 192 can drive the door opening and closing push rod 13 to move stably.

[0028] There are two guide grooves 111 arranged opposite to each other, and there are two flanges 1921 arranged opposite to each other on two sides of the push rod slider 192 . The two flanges 1921 are slidably matched with the two guide grooves 111 respectively.

[0029] By providing guide grooves 111 corresponding to the flanges 1921 on both sides of the driving slider 19, the driving slider 19 can be restricted by the cooperation between the flanges 1921 at both ends and the guide grooves 111 when sliding, so that the driving slider 19 can slide stably and avoid a large deflection tendency.

[0030] The housing is formed by docking an upper cover housing 20 and a lower bottom housing 11 , and two guide grooves 111 are respectively disposed on the upper cover housing 20 and the lower bottom housing 11 .

[0031] By providing guide grooves 111 corresponding to the flange 1921 on both the upper cover shell 20 and the lower bottom shell 11, when the upper cover shell 20 is docked with the lower bottom shell 11, the two guide grooves 111 will engage with the flange 1921 to ensure that the flange 1921 slides along the inside of the guide groove 111 when sliding, thereby improving stability.

[0032] Among them, a pin hole connected to the second hole is also opened on the push rod slider 192, and a pin nut 194 is clamped inside the pin hole. A through hole connected to the pin hole is radially penetrated along the axis on the door opening and closing push rod 13, and a pin 193 is arranged inside the pin hole and is threadedly connected to the pin nut 194.

[0033] Through the cooperation of the pin 193 and the pin nut 194, the door opening and closing push rod 13 can be firmly inserted into the second hole and firmly connected to the push rod slider 192 to ensure that the push rod slider 192 drives the door opening and closing push rod 13 to move more stably and avoid large deflection.

[0034] A supporting hole is provided inside the housing, a bushing 182 is embedded in the supporting hole, one end of the screw rod 181 is passed through the bushing 182, and a bearing 183 is provided at the other end of the screw rod 181, and the bearing 183 is connected to the housing.

[0035] The bushing 182 and the bearing 183 limit and fix the screw rod 181 so that it is firmly fixed inside the housing, while also ensuring stable transmission of the screw rod 181.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] The utility model is described in detail above in conjunction with the embodiments of the drawings. A person skilled in the art can make various variations of the utility model according to the above description. Therefore, certain details in the embodiments should not constitute a limitation of the utility model, and the scope of protection of the utility model shall be defined by the scope of the attached claims.

Claims

1. A push rod guide slider structure of an electric door driving device, arranged inside a housing, characterized in that: It includes a screw rod, a door opening and closing push rod and a driving slider which are transmission-connected with the driving part, and the driving slider is provided with a first hole for the screw rod to be screwed and connected, and a second hole for the door opening and closing push rod to be inserted; The housing is provided with a guide groove along the axial direction of the screw rod, and the driving slider is provided with a flange that is slidably matched with the guide groove.

2. The push rod guide slider structure of the electric door driving device according to claim 1, characterized in that: The driving slider comprises a screw nut and a push rod slider; The first hole is formed in the screw nut, the screw nut is provided with an external thread, and the push rod slider is provided with an internal thread channel, which is screwed and connected to the outside of the screw nut through the internal thread channel; The second hole is opened on the push rod slider and is parallel to the internal thread channel, and the flange is arranged outside the push rod slider.

3. The push rod guide slider structure of the electric door driving device according to claim 2, characterized in that: The guide grooves are arranged in two opposite directions, the flanges are two in number and arranged on two opposite sides of the push rod slider, and the two flanges are respectively slidably matched with the two guide grooves.

4. The push rod guide slider structure of the electric door driving device according to claim 3, characterized in that: The shell is formed by butting an upper cover shell and a lower bottom shell, and the two guide grooves are respectively arranged on the upper cover shell and the lower bottom shell.

5. The push rod guide slider structure of the electric door driving device according to claim 2, characterized in that: The push rod slider is also provided with a pin hole connected with the second hole, and a pin nut is clamped inside the pin hole. A through hole connected with the pin hole is radially penetrated along the axis on the door opening and closing push rod, and a pin is arranged inside the pin hole and is penetrated inside the through hole and threadedly connected with the pin nut.

6. The push rod guide slider structure of the electric door driving device according to claim 1, characterized in that: A supporting hole is arranged inside the shell, a bushing is embedded in the supporting hole, one end of the screw rod is passed through the bushing, and a bearing is arranged at the other end of the screw rod, and the bearing is connected to the shell.

Images