Electric tail door supporting rod

Abstract

The invention discloses an electric tail gate supporting rod, and relates to the field of electric tail gate components, the electric tail gate supporting rod comprises an outer cylinder, an inner supporting cylinder, a first spherical connector and a second spherical connector, the inner supporting cylinder is connected with a driving assembly, the driving assembly comprises a mounting plate and a driving motor fixed on the mounting plate, the mounting plate is fixed in the outer cylinder, and the driving motor is connected with the inner supporting cylinder. An output shaft of the driving motor is connected with a speed reducer, the output end of the speed reducer and the output shaft of the driving motor are coaxially arranged and fixedly connected with a ball screw, the ball screw and the inner supporting cylinder are connected with a transmission assembly, the transmission assembly is connected with a stabilizing assembly, and the transmission assembly and the stabilizing assembly are jointly connected with an anti-abrasion assembly. The supporting rod has the advantages that the tail door can be stably and automatically opened and closed, the anti-abrasion effect is achieved, meanwhile, when the door is manually closed, abrasion to components is avoided, and the service life of the supporting rod is prolonged.

Description

Technical Field

[0001] The invention relates to the field of tailgate support rods, and in particular to an electric tailgate support rod. Background Art

[0002] A tailgate support bar generally refers to a device used to support and open the trunk lid or tailgate of a car. This type of support bar is widely used in car design, especially on vehicles with automatic or electric tailgate functions.

[0003] Among them, there are generally two types of tailgate support rods. One is to manually open and close the tailgate. The support rod generally only plays a supporting and guiding role, and usually achieves the supporting function through a pneumatic or hydraulic system. In non-electric models, this support rod may be a simple spring or gas spring, which provides the necessary support force when the tailgate is opened and can smoothly pull the tailgate down when closed. In electric models, the support rod is often combined with a motor drive system. When the driver presses the button on the remote control key, the switch in the car, or the sensor on the outside of the tailgate, the motor will start and drive the support rod to prop up or release through the screw. The tailgate support rod used in electric vehicles has the following problems:

[0004] 1. When the motor is used to drive the lead screw to rotate to prop up the support rod, the telescopic part will be unstable when it leaves the cylinder. This is because as the lead screw rotates, the slider will drive the telescopic part to leave the cylinder, which means that the combined volume of the lead screw and the telescopic part is reduced, and as the support rod is extended, the gravity of the tailgate will increase the tangential force on the lead screw, reducing its service life;

[0005] 2. The electric tailgate in the prior art realizes the rotation of the tailgate through the transmission between the motor directly driving the reducer and the lead screw slider. This means that when the power is disconnected and the tailgate needs to be closed manually, the motor output shaft and the lead screw need to rotate in the opposite direction to retract the telescopic part. In actual use, problems such as battery power failure and line disconnection are prone to occur. In this way, when manually closing the door, especially when a lot of force is used, it is easy to cause irreversible wear on the lead screw thread, causing damage to the electric tailgate support rod. Based on this, the present invention designs an electric tailgate support rod. Summary of the invention

[0006] The purpose of the present invention is to solve the problems in the prior art and to propose an electric tailgate support rod.

[0007] An electric tailgate support rod comprises the following parts:

[0008] An outer cylinder, one end of which is connected to a spherical connector 1;

[0009] An inner support tube, the inner support tube passes through the other end of the outer tube and is connected to a second spherical connector at the outer portion, the first spherical connector and the second spherical connector are respectively connected to the vehicle body and the tailgate;

[0010] The inner support cylinder is connected to a driving assembly and the movement of the inner support cylinder is achieved through the driving assembly. The driving assembly includes a mounting plate and a driving motor fixed on the mounting plate. The mounting plate is fixed inside the outer cylinder. The output shaft of the driving motor is connected to a reducer. The output end of the reducer is coaxially arranged with the output shaft of the driving motor and is fixedly connected to a ball screw. The ball screw and the inner support cylinder are connected to a transmission assembly for converting the rotational motion of the ball screw into translational motion of the inner support cylinder. The transmission assembly is connected to a stabilizing assembly to achieve stable movement of the inner support cylinder and stably support the tailgate after extending it. The transmission assembly and the stabilizing assembly are jointly connected to an anti-wear assembly to prevent the ball screw from wear and bending.

[0011] In the above-mentioned electric tailgate support rod, the transmission assembly includes a connecting block, the connecting block is connected with a threaded sleeve, the threaded sleeve is connected to a ball screw, the connecting block is connected with a piston ring, the connecting block and the piston ring are arranged as a detachable structure, the piston ring is fixedly connected to the bottom of the inner support cylinder, the outer diameter of the piston ring is matched with the inner diameter of the outer cylinder and slides, the inner diameter of the piston ring is matched with the outer diameter of the threaded sleeve and is slidably connected, and the top of the piston ring is sleeved with a spring.

[0012] In the above-mentioned electric tailgate support rod, the stabilizing assembly includes a plurality of limit rods, which are installed on the outer end of the reducer through a connecting ring, and the plurality of limit rods pass through the inner wall of the piston ring to limit the movement of the piston ring.

[0013] In the above-mentioned electric tailgate support rod, the anti-wear component includes a plurality of limit grooves opened on the outer wall of the inner support tube, a connecting rod is inserted into each of the limit grooves, and both ends of each of the connecting rods are connected to the connecting block and the threaded sleeve. A connecting groove is opened on the upper end of the piston ring and the connecting block is matched and connected in the connecting groove. An electromagnet ring is embedded in the bottom of the connecting block and the inner bottom of the lower connecting groove is magnetically fixed by the electromagnet ring. An elastic component is arranged in the limit groove and the other end of the elastic component is connected to the connecting rod.

[0014] In the above-mentioned electric tailgate support rod, the outer side wall of the piston ring is provided with a plurality of mounting holes, the number of the mounting holes is the same as the number of the connecting rods, and the mounting holes are used to insert and install the limiting rods when the connecting block is matched with the connecting groove.

[0015] In the above-mentioned electric tailgate support rod, a plurality of square protrusions are arranged in an annular shape on the outer side of the connecting block, and a limiting rod is inserted into each of the protrusions.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. The present invention sets a limit rod at the connection between the piston ring and the reducer. The multiple limit rods can prevent the piston ring from rotating in the outer tube on the one hand, and increase the connection strength between the ball screw, the piston ring and the connecting block when the inner support tube is extended on the other hand. On the one hand, it can reduce vibration, and on the other hand, it can improve the strength of the transmission assembly when the inner support tube is extended, thereby improving the stability of the electric tailgate when opening and closing.

[0018] 2. When the present invention is in use, the connecting block and the piston ring are configured as a detachable structure. This has the advantages of, on the one hand, facilitating the connection and installation between the connecting block and the piston ring, and on the other hand, the mutual separation between the two can avoid the problem of excessive force applied when manually closing the tailgate, causing the threaded sleeve and the ball screw to move a long distance in a short time, resulting in wear of the threaded part of the screw, thereby improving the service life of the tailgate support rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The present invention is a schematic structural diagram of an electric tailgate support rod.

[0020] Figure 2 This is a schematic diagram of the interior of the outer tube of the electric tailgate support rod proposed by the present invention.

[0021] Figure 3 for Figure 2 Enlarged schematic diagram of part A.

[0022] Figure 4 This is a schematic structural diagram of an anti-wear component and a transmission component in an electric tailgate support rod proposed by the present invention.

[0023] Figure 5 The figure is a top view of a piston ring and a connecting block in an electric tailgate support rod proposed by the present invention.

[0024] Figure 6 The present invention is a cross-sectional view of a threaded sleeve in an electric tailgate support rod.

[0025] In the figure: 1 outer cylinder, 2 inner support cylinder, 3 spherical connector 1, 4 spherical connector 2, 5 drive assembly, 51 mounting plate, 52 drive motor, 53 reducer, 54 ball screw, 6 transmission assembly, 61 connecting block, 62 threaded sleeve, 63 piston ring, 64 spring, 65 mounting hole, 66 bump, 7 stabilizing assembly, 71 limiting rod, 72 connecting ring, 8 anti-wear assembly, 81 limiting groove, 82 connecting rod, 83 connecting groove, 84 electromagnet ring. DETAILED DESCRIPTION

[0026] Reference Figure 1-6, an electric tailgate support rod, comprising the following parts:

[0027] An outer cylinder 1, one end of which is connected with a spherical connector 3;

[0028] The inner support tube 2 passes through the other end of the outer tube 1 and is connected to a spherical connector 2 4 at the outer portion. The spherical connector 1 3 and the spherical connector 2 4 are connected to the vehicle body and the tailgate respectively;

[0029] The inner support tube 2 is connected with a driving assembly 5 and the movement of the inner support tube 2 is realized by the driving assembly 5. The driving assembly 5 includes a mounting plate 51 and a driving motor 52 fixed on the mounting plate 51. The driving motor 52 is connected to a control module for controlling the rotation of the driving motor 52. The mounting plate 51 is fixed inside the outer tube 1. The output shaft 52 of the driving motor 52 is connected with a reducer 53. The output end of the reducer 53 is coaxially arranged with the output shaft of the driving motor 52 and is fixedly connected with a ball screw 54. The ball screw 54 and the inner support tube 2 are connected with a transmission assembly 6, which converts the rotational motion of the ball screw 54 into the translational motion of the inner support tube 2.

[0030] The transmission assembly 6 includes a connecting block 61, which is connected to a threaded sleeve 62, which is connected to the ball screw 54, and is connected to a piston ring 63. The connecting block 61 and the piston ring 63 are arranged as a detachable structure. The piston ring 63 is fixedly connected to the bottom of the inner support tube 2. The outer diameter of the piston ring 63 is matched with the inner diameter of the outer tube 1 and slides. The inner diameter of the piston ring 63 is matched with the outer diameter of the threaded sleeve 63 and is slidably connected. The top of the piston ring 63 is sleeved with a spring 64.

[0031] The transmission assembly 6 is connected to the stabilizing assembly 7 to achieve the stable movement of the inner support tube 2 and stably support the tailgate after it is extended. The stabilizing assembly 7 includes a plurality of limit rods 71, and the plurality of limit rods 71 ​​are installed on the outer end of the reducer 53 through a connecting ring 72. The plurality of limit rods 71 ​​pass through the inner wall of the piston ring 63 to limit the movement of the piston ring 63. At the same time, when the piston ring 63 slides outward, the plurality of limit rods 71 ​​can also increase the strength of the ball screw 54 between the piston ring 63 and the reducer 53, thereby reducing the vibration and wear of the ball screw 54.

[0032] The transmission assembly 6 and the stabilizing assembly 7 are jointly connected with an anti-wear assembly 8 for preventing the ball screw 54 from wearing and bending. The anti-wear assembly 8 includes a plurality of limit grooves 81 provided on the outer wall of the inner support tube 2, and a connecting rod 82 is inserted into each limit groove 81. Both ends of each connecting rod 82 are connected to the connecting block 61 and the threaded sleeve 62, so that the connecting rod 61 can not only drive the threaded sleeve 62 and the connecting block 61 to move, but also create a misalignment space relative to the inner support tube 2, which means that relative sliding can occur between the piston ring 63 and the connecting block 51. In this way, when axial sliding occurs, the movement of the piston ring 63 can prevent the threaded sleeve 62 connected to the connecting block 51 from directly interacting with the ball screw 54, thereby reducing the wear on the ball screw. At the same time, a connecting groove 83 is provided on the upper end of the piston ring 63 and the connecting block 61 is cooperatively connected in the connecting groove 64. The connecting block 61 The bottom of the connecting groove 83 is embedded with an electromagnet ring 84, and the magnetic layer on the inner bottom of the connecting groove 83 is magnetically fixed by the electromagnet ring 43. The electromagnet ring 43 is connected to the control module. In use, the magnetic layer at the bottom of the connecting groove 83 can be subjected to greater magnetic fixation and lesser magnetic fixation by turning the electromagnet ring 43 on and off. When it is in a greater degree of fixation, the electromagnet ring 43 is powered on with a magnetic pole opposite to the opposite pole of the magnetic layer. At this time, the electric strut is in an automatic working state. When it is in a lesser degree of valley, the electromagnet ring 43 is powered off, and only the magnetic layer magnetically attracts the electromagnet ring 43. At this time, even if the connecting block 61 and the piston ring 63 are in a mutually fixed state, the magnetic force connecting the two is small, and the two can be separated manually, that is, the above-mentioned separation of the piston ring 63 and the connecting block 61 when the car door is manually closed avoids damage to the ball screw 54.

[0033] An elastic component is provided in the limiting groove 81 and the other end of the elastic component is connected to the connecting rod 82, which means that even if the piston ring 63 and the connecting block 61 slide relative to each other, there will be stroke limitation and resistance limitation under the action of the resistance of the elastic component. This means that even when the inner support cylinder 2 is contracted manually, under the action of the elastic component, the threaded sleeve 62 will cooperate to move slowly through the pressure of the step-by-step component on the threaded sleeve 62. A plurality of mounting holes 65 are provided on the outer wall of the piston ring 63. The number of mounting holes 65 is the same as the number of connecting rods 82. The mounting holes 65 are used to insert and install the connecting rod 82 when the connecting block 61 cooperates with the connecting groove 83. A plurality of square protrusions 66 are provided in the outer ring of the connecting block 61. A connecting rod 82 is inserted into each protrusion 66. The protrusions 66 facilitate the installation of the connecting rod 82 and also have the effect of limiting the rotation of the connecting groove 83.

[0034] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. An electric tailgate support rod, characterized in that: Includes the following sections: An outer cylinder (1), one end of the outer cylinder (1) being connected to a spherical connector (3); An inner support tube (2), the inner support tube (2) passes through the other end of the outer tube (1) and is connected to a second spherical connector (4) at the outer portion, the first spherical connector (3) and the second spherical connector (4) are connected to the vehicle body and the tailgate respectively; The inner support cylinder (2) is connected to a driving assembly (5) and the movement of the inner support cylinder (2) is realized by the driving assembly (5), the driving assembly (5) comprises a mounting plate (51) and a driving motor (52) fixed on the mounting plate (51), the driving motor (52) is connected to a control module for controlling the rotation of the driving motor (52), the mounting plate (51) is fixed inside the outer cylinder (1), the output shaft (52) of the driving motor (52) is connected to a reducer (53), the output end of the reducer (53) is connected to the driving motor The output shaft of the machine (52) is coaxially arranged and fixedly connected with a ball screw (54); the ball screw (54) and the inner support tube (2) are connected with a transmission assembly (6) for converting the rotational motion of the ball screw (54) into the translational motion of the inner support tube (2); the transmission assembly (6) is connected with a stabilizing assembly (7) so as to realize the stable movement of the inner support tube (2) and stably support the tailgate after being extended; the transmission assembly (6) and the stabilizing assembly (7) are jointly connected with an anti-wear assembly (8) for preventing the ball screw (54) from wearing and bending.

2. The electric tailgate support rod according to claim 1, characterized in that: The transmission assembly (6) comprises a connecting block (61), the connecting block (61) is connected to a threaded sleeve (62), the threaded sleeve (62) is connected to a ball screw (54), the connecting block (61) is connected to a piston ring (63), the connecting block (61) and the piston ring (63) are arranged to be a detachable structure, the piston ring (63) is fixedly connected to the bottom of the inner support cylinder (2), the outer diameter of the piston ring (63) is matched with the inner diameter of the outer cylinder (1) and slides, the inner diameter of the piston ring (63) is matched with the outer diameter of the threaded sleeve (63) and is slidably connected, and the top of the piston ring (63) is sleeved with a spring (64).

3. The electric tailgate support rod according to claim 2, characterized in that: The stabilizing assembly (7) comprises a plurality of limiting rods (71), wherein the plurality of limiting rods (71) are mounted on the outer end of the reducer (53) via a connecting ring (72), and the plurality of limiting rods (71) pass through the inner wall of the piston ring (63) to limit the movement of the piston ring (63).

4. The electric tailgate support rod according to claim 2, characterized in that: The anti-wear component (8) includes a plurality of limit grooves (81) provided on the outer wall of the inner support cylinder (2), a connecting rod (82) being inserted into each of the limit grooves (81), both ends of each of the connecting rods (82) being connected to the connecting block (61) and the threaded sleeve (62), a connecting groove (83) being provided on the upper end of the piston ring (63) and the connecting block (61) being connected in the connecting groove (64), an electromagnet ring (84) being embedded in the bottom of the connecting block (61) and magnetically fixing the magnetic layer on the inner bottom of the connecting groove (83) through the electromagnet ring (43), the electromagnet ring (43) being connected to the control module, an elastic component being provided in the limit groove (81) and the other end of the elastic component being connected to the connecting rod (82).

5. The electric tailgate support rod according to claim 4, characterized in that: The outer wall of the piston ring (63) is provided with a plurality of mounting holes (65), the number of the mounting holes (65) being the same as the number of the connecting rods (82), and the mounting holes (65) being used for inserting and installing the connecting rods (82) when the connecting block (61) is matched with the connecting groove (83).

6. The electric tailgate support rod according to claim 4, characterized in that: A plurality of square protrusions (66) are provided in an annular shape on the outer side of the connection block (61), and a connection rod (82) is inserted into each of the protrusions (66).

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