Electric supporting rod and vehicle

Abstract

The utility model relates to the field of power control mechanisms of wing fans, and provides an electric supporting rod and a vehicle, the electric supporting rod comprises a sleeve assembly and a driving assembly, the sleeve assembly comprises a first sleeve and a second sleeve which are connected in an inserted mode, a first spherical hinge seat arranged on the first sleeve and a second spherical hinge seat arranged on the second sleeve; the driving assembly comprises a power source and a lead screw assembly connected with a power output shaft of the power source. The lead screw assembly is connected between the first sleeve and the second sleeve so as to drive the first sleeve and the second sleeve to relatively slide in the axial direction of the sleeve assembly, and the axial direction of the power output shaft and the axial direction of the sleeve assembly are arranged in a crossed mode. According to the electric supporting rod, the axial direction of the power output shaft is intersected with the axial direction of the sleeve assembly, so that the space occupied by the sleeve assembly in the axial direction can be reduced, and the electric supporting rod can be conveniently arranged on a vehicle.

Description

TECHNICAL FIELD

[0001] The utility model relates to the power operating mechanism technical field of wing fan, especially a kind of electric support rod.

[0002] The utility model also relates to a vehicle provided with the above electric support rod. BACKGROUND

[0003] With the popularization of automobile intelligence, intelligent electric accessories are applied more and more widely on automobiles. As a key opening and closing part of automobile electric luggage compartment system, electric support rod gradually replaces traditional manual opening and closing, and electric switch brings good experience to users, greatly facilitating the use requirements of users.

[0004] At present, the electric support rod for opening and closing luggage compartment (i.e. tail door opening and closing of vehicle) on the market is mostly linear or U-shaped in overall shape. For linear electric support rod, motor, gear box reduction mechanism and screw rod are located on the same axis, resulting in long support rod length, which needs more layout space, and it is difficult to arrange in compact vehicle, and there are many transmission parts, installation is difficult, high precision is required for parts, and cost is high. For U-shaped electric support rod, motor transmits power to screw rod in support rod through planetary reduction transmission mechanism, and planetary reduction transmission mechanism generally includes multiple gears, which has more parts and high cost, and is prone to abnormal sound. SUMMARY

[0005] Therefore, the utility model aims at providing an electric support rod to reduce the axial space occupied by sleeve assembly and facilitate its arrangement on vehicle.

[0006] To achieve the above purpose, the technical scheme of the utility model is as follows:

[0007] An electric support rod includes sleeve assembly and drive assembly.

[0008] The sleeve assembly includes first sleeve and second sleeve connected by insertion, and one end of the first sleeve and the second sleeve connected by insertion, first ball hinge seat arranged at the other end of the first sleeve, and second ball hinge seat arranged at the other end of the second sleeve.

[0009] The drive assembly includes power source and screw rod assembly connected with power output shaft of the power source; the screw rod assembly is connected between the first sleeve and the second sleeve to drive the first sleeve and the second sleeve to slide along the axial direction of the sleeve assembly, and the axial direction of the power output shaft intersects with the axial direction of the sleeve assembly.

[0010] Further, a reset member is connected between the first sleeve and the second sleeve, and the reset member stores energy when the sleeve assembly is elongated by relative sliding of the first sleeve and the second sleeve; and the reset member releases energy to reset the first sleeve and the second sleeve to shorten the sleeve assembly.

[0011] Further, the first sleeve is provided with a first spring mounting seat, and the second sleeve is provided with a second spring mounting seat; and the reset member includes a spring sleeved outside the sleeve assembly, and two ends of the spring are connected with the first spring mounting seat and the second spring mounting seat respectively.

[0012] Further, one end of the first ball hinge seat is inserted into the first sleeve and can rotate around the axis of the first sleeve; and an anti-disengagement structure is arranged between the first ball hinge seat and the first sleeve, and the anti-disengagement structure is used to prevent the first ball hinge seat from disengaging from the first sleeve along the axis of the first sleeve.

[0013] Further, a worm and gear assembly is further included, the worm and gear assembly includes a worm gear and a worm engaged and connected; the power source includes a motor with the power output shaft, the motor is in transmission connection with the worm, and the worm gear is in transmission connection with the lead screw in the lead screw assembly.

[0014] Further, a driving gear is arranged on the power output shaft, the driving gear is engaged and connected with the worm, and a first damping member is arranged between the driving gear and the worm; and / or, the worm gear includes a worm gear driving member and a worm gear driven member engaged and connected, and a second damping member is arranged between the worm gear driving member and the worm gear driving member, the worm gear driving member is engaged and connected with the worm, and the worm gear driven member is in transmission connection with the lead screw.

[0015] Further, a housing assembly is further included, two sides of the housing assembly are connected with the second sleeve and the second ball hinge seat respectively; the worm and gear assembly and the motor are both installed in the housing assembly, and a rotation stopping structure is arranged between the housing assembly and the motor, and the rotation stopping structure is used to prevent the motor from rotating around the axis of the power output shaft.

[0016] Further, the housing assembly includes a housing main body with a motor mounting port, and an end cover arranged at the motor mounting port; and a clamping part is arranged on the end cover, and the clamping part is used to clamp the motor.

[0017] Further, the first bearing and the second bearing are arranged on both sides of the worm wheel, the first bearing and the second bearing are respectively arranged in the second sleeve and the second ball hinge base, the screw rod is rotatable relative to the sleeve assembly through the first bearing and the second bearing, and / or the damper is arranged in the second ball hinge base, the damper is connected with the screw rod in transmission, and is used for applying damping force to the rotation of the screw rod.

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] The electric supporting rod is arranged on the vehicle conveniently by the axial extension of the screw rod along the axial direction of the sleeve assembly and the axial intersection arrangement of the axial direction of the power output shaft and the axial direction of the sleeve assembly.

[0020] In addition, the reset member is arranged, when the first sleeve and the second sleeve are elongated, even if the power source fails, the first sleeve and the second sleeve can be reset under the action of the reset member, so that the sleeve assembly is shortened, and use is more convenient. The spring is sleeved on the power assembly, and the first spring mounting seat and the second spring mounting seat are arranged on the first sleeve, so that the overall structure is compact and convenient to arrange.

[0021] Secondly, the first ball hinge base is inserted into the first sleeve and can rotate around the axial direction of the first sleeve, so that the electric supporting rod assembly has a wide range of applications, the first ball hinge base and the second ball hinge base can be combined at various angles by rotating the first ball hinge base, and the electric supporting rod can change in multiple directions during extension and retraction. The anti-disengagement structure improves the reliability of the insertion of the first ball hinge base on the first sleeve.

[0022] Furthermore, the worm and gear assembly transmits the power of the motor to the screw rod in the screw rod assembly, which is beneficial to ensuring the stability of the structure operation. The meshing connection between the driving gear and the worm can ensure reliable transmission of the motor power, and the first damping member can achieve good damping effect. The housing assembly is arranged, the worm and gear assembly and the motor are arranged in the housing assembly, which is convenient for overall arrangement and installation. The rotation stopping structure arranged between the housing assembly and the motor can be used to prevent the motor from rotating around the axial direction of the power output shaft, which is beneficial to ensuring the stable and smooth operation of the electric supporting rod.

[0023] In addition, the shell assembly comprises a shell body and an end cover, facilitating installation of the motor, and a pressing part is arranged on the end cover, the motor is pressed through the pressing part, and the stability of installation of the motor in the shell assembly can be improved. The first bearing and the second bearing are arranged, facilitating stable rotation of the lead screw and improving the stability of operation of the electric supporting rod. The damper is arranged, damping force is applied to the rotation of the lead screw, the speed of extension and contraction of the electric supporting rod is controlled, and the stability during extension and contraction of the sleeve assembly is ensured.

[0024] Another purpose of the utility model lies in providing a vehicle, wherein the vehicle is provided with the electric supporting rod as described above.

[0025] The vehicle of the utility model adopts the electric supporting rod, not only can realize stable operation of the sleeve assembly during extension and contraction when the tail door is opened, but also can reduce the axial space occupied by the sleeve assembly, and facilitate arrangement and installation of the electric supporting rod on the vehicle. DRAWINGS

[0026] The drawings forming a part of the utility model serve to provide a further understanding of the utility model, and the illustrative embodiments of the utility model and the description thereof serve to explain the utility model, and do not constitute improper limitation on the utility model. In the drawings:

[0027] Figure 1 The electric supporting rod of the utility model embodiment is shown in an exploded view;

[0028] Figure 2 The electric supporting rod of the utility model embodiment is shown in a sectional view;

[0029] Figure 3 The first sleeve and the second sleeve of the utility model embodiment are shown in a structure schematic view in a cooperation state;

[0030] Figure 4 The first hinge seat of the utility model embodiment is shown in a structure schematic view;

[0031] Figure 5 The first spring mounting seat of the utility model embodiment is shown in a structure schematic view;

[0032] Figure 6 The second sleeve of the utility model embodiment is shown in a structure schematic view;

[0033] Figure 7 The lead screw assembly of the utility model embodiment is shown in a structure schematic view;

[0034] Figure 8 The lead screw assembly of the utility model embodiment is shown in a sectional view;

[0035] Figure 9A structure schematic view of the second hinged seat according to the embodiment of the present application is shown in the figure;

[0036] Figure 10 A structure schematic view of the damper according to the embodiment of the present application is shown in the figure;

[0037] Figure 11 A structure schematic view of the worm gear according to the embodiment of the present application is shown in the figure;

[0038] Figure 12 An exploded view of the worm gear according to the embodiment of the present application is shown in the figure;

[0039] Figure 13 A structure schematic view of the power source according to the embodiment of the present application is shown in the figure;

[0040] Figure 14 A structure schematic view of the shell assembly according to the embodiment of the present application is shown in the figure;

[0041] Figure 15 A structure schematic view of the motor from the first perspective according to the embodiment of the present application is shown in the figure;

[0042] Figure 16 A structure schematic view of the motor from the second perspective according to the embodiment of the present application is shown in the figure;

[0043] Figure 17 A structure schematic view of the worm according to the embodiment of the present application is shown in the figure;

[0044] Figure 18 A structure schematic view of the anti-twist device from the first perspective according to the embodiment of the present application is shown in the figure;

[0045] Figure 19 A structure schematic view of the anti-twist device from the second perspective according to the embodiment of the present application is shown in the figure;

[0046] Explanation of reference signs:

[0047] 1, first sleeve; 2, second sleeve; 3, first ball hinge seat; 4, second ball hinge seat; 5, screw assembly; 6, power source; 7, damper; 8, first bearing; 9, second bearing; 10, spring; 11, first spring mounting seat; 12, worm gear; 13, worm; 14, third bearing; 15, fourth bearing; 16, first damping member; 20, threaded connecting piece; 21, second spring mounting seat;

[0048] 101, first protrusion; 102, second protrusion; 110, first through hole; 111, first helical groove; 112, hexagonal column; 121, worm drive; 122, second damping member; 123, worm follower; 1210, helical tooth; 1211, second through hole; 1212, first limiting protrusion; 1220, damping block; 1221, damping tooth groove; 1230, shaft body; 1231, spline hole; 1232, second limiting protrusion; 131, tooth groove; 211, second helical groove; 212, guide groove; 213, first bearing positioning hole; 214, first mounting hole; 300, main body; 301, first ball socket; 302, first limiting boss; 303, first groove; 401, second ball socket; 402, third mounting hole; 403, second bearing positioning hole; 404, limiting groove; 501, lead screw; 502, lead screw nut; 5011, limiting stop block; 5012, spline part; 5021, guide protrusion; 60, housing assembly; 61, motor; 62, anti-twist device; 63, damping rubber sleeve; 64, end cover; 601, second mounting hole; 602, anti-rotation protrusion; 611, power output shaft; 612, driving gear; 613, sensing device; 614, limiting hole; 621, limiting column; 622, anti-twist protrusion; 640, limiting block; 641, wire harness via hole; 642, process hole; 643, tightening part; 701, inner tooth; 702, limiting rib. DETAILED DESCRIPTION

[0049] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0050] In the description of the utility model, it should be noted that the terms "upper", "lower", "inner", "back" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0051] In addition, in the description of the utility model, unless otherwise explicitly limited, the terms "mounting", "connection", "connection", "connecting piece" should be understood broadly. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood in combination with the specific situation.

[0052] The utility model discloses below will refer to the drawing and combine the embodiment to explain in detail.

[0053] Embodiment one

[0054] This embodiment relates to a kind of electric supporting rod, which can reduce the axial space occupied by sleeve assembly, and facilitate its arrangement on vehicle.

[0055] In overall structure, as Figure 1 And Figure 2 The electric supporting rod of this embodiment includes sleeve assembly and drive assembly.

[0056] Wherein, sleeve assembly includes first sleeve 1 and second sleeve 2 connected by inserting, and one end relative to first sleeve 1 and second sleeve 2 is inserted and connected, first ball hinge seat 3 is arranged at the other end of first sleeve 1, and second ball hinge seat 4 is arranged at the other end of second sleeve 2.

[0057] And drive assembly includes power source 6, and screw rod assembly 5 is transmissionally connected with the power output shaft 611 of power source 6.Screw rod assembly 5 is connected between first sleeve 1 and second sleeve 2, to drive first sleeve 1 and second sleeve 2 relative sliding along the axial direction of sleeve assembly, and the axial direction of power output shaft 611 is arranged with the axial direction of sleeve assembly.

[0058] At this time, as in the above structure, by setting the axial direction of screw rod 501 along the axial direction of sleeve assembly, and the axial direction of power output shaft 611 is arranged with the axial direction of sleeve assembly, the space occupied in the axial direction of sleeve assembly can be reduced, and the electric supporting rod on vehicle is facilitated arrangement.

[0059] Based on the overall structure as above, in detail, referring to Figures 1 to 3 As preferred embodiment in this embodiment, first sleeve 1 is inserted in second sleeve 2, and first ball hinge seat 3 arranged on first sleeve 1 and second ball hinge seat 4 arranged on second sleeve 2 are respectively connected on two members capable of opening and closing each other, and the two members can be vehicle body and tail door on vehicle body, for example, first ball hinge seat 3 and second ball hinge seat 4 are respectively hingedly connected with vehicle body and tail door (trunk door or luggage compartment door), at this time, the electric supporting rod of this embodiment is used as the actuator of tail door (trunk door or luggage compartment door) opening and closing, for automatic opening and closing of tail door.

[0060] It is worth mentioning that, in addition to first sleeve 1 being inserted in second sleeve 2, second sleeve 2 can also be inserted in first sleeve 1, so that the relative expansion and contraction of first sleeve 1 and second sleeve 2 along the axial direction of sleeve assembly can also be realized.

[0061] As a preferred embodiment, in this embodiment, referring to Figures 1 to 3A reset member is connected between the first sleeve 1 and the second sleeve 2. When the sleeve assembly is elongated by the relative sliding of the first sleeve 1 and the second sleeve 2, the reset member stores energy. When the reset member releases energy, the first sleeve 1 and the second sleeve 2 can be reset to shorten the sleeve assembly. At this time, the reset member is arranged. When the first sleeve 1 and the second sleeve 2 are elongated, even if the power source 6 fails, the first sleeve 1 and the second sleeve 2 can be reset to shorten the relative length under the action of the reset member, which is more convenient to use, and is beneficial to ensure that the two components, such as the tail door and the vehicle body, are in a relatively closed state, which is beneficial to ensure the safety of use.

[0062] Specifically, the reset member of the embodiment includes a spring 10 sleeved outside the sleeve assembly. On the basis that the first sleeve 1 is inserted into the second sleeve 2, the spring 10 is specifically sleeved outside the outer periphery of the second sleeve 2, and the two ends of the spring 10 are fixed on the first sleeve 1 and the second sleeve 2, respectively.

[0063] In some feasible embodiments, as preferred, in the embodiment, as shown in Figures 2 to 5 The first sleeve 1 is provided with a first spring mounting seat 11, and the second sleeve 2 is provided with a second spring mounting seat 21. The reset member, that is, the spring 10 sleeved outside the sleeve assembly, has two ends connected with the first spring mounting seat 11 and the second spring mounting seat 21, respectively. In this way, the spring 10 is sleeved outside the power assembly, and the first spring mounting seat 11 and the second spring mounting seat 21 are arranged on the first sleeve 1, which not only provides a mounting basis for the installation of the spring 10, but also facilitates the installation of the spring 10, and the overall structure is compact and convenient to arrange.

[0064] As shown in Figure 4 and Figure 5 As a preferred embodiment, the first spring mounting seat 11 has a first through hole 110 penetrating through both ends of the first spring mounting seat 11, and a first helical groove 111 is formed on the outer periphery of the first spring mounting seat 11. The first ball joint seat 3 has a columnar main body 300 and a first ball socket 301 arranged at the end of the main body 300, and one end of the main body 300 is formed with a first limiting boss 302 protruding radially outward from the main body 300.

[0065] Specifically, the first spring mounting seat 11 is sleeved on the first ball joint seat 3, that is, the main body 300 of the first ball joint seat 3 is inserted into the first through hole 110 of the first spring mounting seat 11, and one end of the first spring mounting seat 11 abuts against the first limiting boss 302. By rotating the first spring mounting seat 11, one end of the spring 10 is screwed into the first helical groove 111 on the first spring mounting seat 11 to achieve the fixed installation of the spring 10 on the first spring mounting seat 11.

[0066] In order to facilitate the installation of the spring 10 on the first spring mounting seat 11, in the embodiment, an operation part is arranged on the first spring mounting seat 11. Specifically, the operation part comprises a hexagonal column 112 formed on the end of the first spring mounting seat 11. At this time, the hexagonal column 112 is used to cooperate with the operation tool, so that the first spring mounting seat 11 can be easily screwed into one end of the spring 10, and the spring 10 is fixed in the first spiral groove 111 of the first spring mounting seat 11, thereby facilitating the installation of the spring 10 on the first spring mounting seat 11.

[0067] Moreover, it is worth mentioning that the first through hole 110 of the first spring mounting seat 11 is a circular hole, and the main body 300 of the first ball hinge seat 3 is also in a cylindrical shape. The gap between the main body 300 and the first spring mounting seat 11 is matched, and at this time, when the spring 10 is installed, the spring 10 is gradually screwed into the first spiral groove 111 by rotating the first spring mounting seat 11, which is convenient for installation.

[0068] Referring to Figure 2 , Figure 3 and combining Figure 6 shown, the second spring mounting seat 21 is fixedly connected to the end of the second sleeve 2, and a second spiral groove 211 is also formed on the outer circumferential surface of the second spring mounting seat 21. With respect to the one end connected to the first spring mounting seat 11, the other end of the spring 10 is screwed into the second spiral groove 211 of the second spring mounting seat 21, thereby realizing the fixed installation of the spring 10 on the second spring mounting seat 21.

[0069] Moreover, in the specific implementation, the wire diameter of the spring 10 (i.e. the diameter of the steel wire used to manufacture the spring) is between 3mm and 4.5mm, and the diameters of the first spiral groove 111 and the second spiral groove 211 are slightly larger than the wire diameter of the spring 10 by 0.2-1mm. At the same time, the bottom diameters of the first spiral groove 111 and the second spiral groove 211 are larger than the inner diameter of the spring 10 by 0.2mm-1.5mm.

[0070] In this way, the two ends of the spring 10 are screwed into the first spiral groove 111 and the second spiral groove 211 respectively, so that the end of the spring 10 is deformed to be enlarged, that is, the end of the spring 10 can be interference-fitted in the first spiral groove 111 and the second spiral groove 211, thereby ensuring the reliability of the connection of the two ends of the spring 10 with the first spring mounting seat 11 and the second spring mounting seat 21 respectively. Moreover, the spring 10 is deformed to be enlarged, which generates an axial friction force. The free length of the spring 10 is 10%-30% shorter than the stroke of the strut. After installation, the spring 10 is in a stretched state and forms a stretching force, and the stretching force is smaller than the axial friction force of the spring 10. At this time, the two ends of the spring 10 can be fixed on the first spring mounting seat 11 and the second spring mounting seat 21.

[0071] Referring to Figure 2 and Figure 3And, as shown in Figure 8 In this embodiment, as a preferred implementation form, one end of the first ball joint seat 3 is inserted into the first sleeve 1 and can rotate around the axial direction of the first sleeve 1. At this time, by rotating the first ball joint seat 3, the relative rotation between the first ball joint seat 3 and the second ball joint seat 4 can be achieved, and various angle combinations can be achieved, which is suitable for various shapes of tailgate opening and closing, so that the multi-directional change of the electric supporting rod during extension and retraction can be achieved, and the arrangement and installation of the electric supporting rod are facilitated.

[0072] In addition, in this embodiment, a anti-disengagement structure is arranged between the first ball joint seat 3 and the first sleeve 1, which is used to prevent the first ball joint seat 3 from disengaging from the first sleeve 1 along the axial direction of the first sleeve 1. By arranging the anti-disengagement structure, the reliability of the insertion of the first ball joint seat 3 on the first sleeve 1 can be improved.

[0073] Specifically, still referring to Figure 2 and Figure 3 And, as shown in Figure 8 The end of the first ball joint seat 3 away from the first ball socket 301 is inserted into the first sleeve 1. The anti-disengagement structure specifically includes a first groove 303 arranged on the first ball joint seat 3, and a first protrusion 101 arranged at the end of the first sleeve 1. Specifically, the end of the first ball joint seat 3 is provided with a first groove 303 arranged in the circumferential direction of the ring, and the end of the first sleeve 1 is provided with a first protrusion 101 arched inward along the radial direction of the first sleeve 1, and the first protrusion 101 is clamped in the first groove 303. By clamping the first protrusion 101 and the first groove 303, the insertion and fixation of the first ball joint seat 3 and the first sleeve 1 can be achieved, and the first ball joint seat 3 can be effectively prevented from disengaging from the first sleeve 1, and the first ball joint seat 3 can also rotate around the axial direction of the first sleeve 1.

[0074] It is worth mentioning that, in this embodiment, the anti-disengagement structure between the first ball joint seat 3 and the first sleeve 1 can also adopt other structure forms in the prior art, as long as it can ensure that the first ball joint seat 3 can rotate relative to the first sleeve 1, and can ensure the reliability of the connection between the first ball joint seat 3 and the first sleeve 1.

[0075] Referring to Figure 2 and Figure 3 And, as shown in Figure 7 and Figure 8As shown, in the embodiment, the lead screw assembly 5 comprises a lead screw nut 502 and a lead screw 501 connected by screwing, the lead screw 501 extends along the axial direction of the sleeve assembly, and the lead screw nut 502 and the lead screw 501 are connected with the first sleeve 1 and the second sleeve 2 respectively. Specifically, the lead screw nut 502 is fixedly arranged in the first sleeve 1 and arranged close to one end of the first sleeve 1. One end of the lead screw 501 is inserted into the first sleeve 1, and the other end is rotatably arranged in the second sleeve 2, for example, by arranging a bearing in the second sleeve 2, so that the lead screw 501 is arranged in the bearing, thereby realizing the rotatable arrangement of the lead screw 501 in the second sleeve 2.

[0076] In order to prevent the lead screw 501 from being separated from the first sleeve 1 along the axial direction of the lead screw 501, in the embodiment, an anti-extrusion structure is arranged between the lead screw 501 and the first sleeve 1. The anti-extrusion structure specifically comprises a limiting block 5011 arranged on the lead screw 501, and a second protrusion 102 arranged on the first sleeve 1. The limiting block 5011 is specifically arranged at the end of the lead screw 501 inserted into the first sleeve 1. In specific implementation, the limiting block 5011 can be arranged in a circular ring structure, which is specifically arranged at the end of the lead screw 501. The outer diameter of the limiting block 5011 is greater than the diameter of the lead screw 501 and less than the inner diameter of the first sleeve 1, and the limiting block 5011 can be fixed at the end of the lead screw 501 by screwing or interference fit.

[0077] The second protrusion 102 is structurally the same as the first protrusion 101 described above, which is also arched inward along the radial direction of the first sleeve 1, and the second protrusion 102 is arranged at the end of the first sleeve 1 away from the first spherical hinge seat 3. At this time, after the lead screw 501 is stretched out, the limiting block 5011 at the end of the lead screw 501 is blocked by the second protrusion 102, which can effectively prevent the lead screw 501 from being separated from the first sleeve 1. Moreover, the position where the second protrusion 102 abuts against the limiting block 5011 is also the limit position of the stretching out of the lead screw 501.

[0078] In combination with the above Figures 6 to 8 As shown, in the embodiment, a guide structure is further arranged between the first sleeve 1 and the second sleeve 2 to guide the relative stretching and contraction of the first sleeve 1 and the second sleeve 2 along the axial direction of the sleeve assembly. Specifically, the guide structure comprises a guide protrusion 5021 formed on the outer circumferential surface of the lead screw nut 502 in the first sleeve 1, and a guide groove 212 formed on the inner wall of the second sleeve 2.

[0079] The guide protrusions 5021 and the guide grooves 212 are in one-to-one correspondence, and each guide protrusion 5021 is inserted into each guide groove 212 when the first sleeve 1 is inserted into the second sleeve 2. At this time, the relative expansion and contraction of the first sleeve 1 and the second sleeve 2 can be guided by the cooperation of the guide protrusions 5021 and the guide grooves 212, and the rotation of the lead screw nut 502 relative to the second sleeve 2 can also be prevented.

[0080] By Figure 2 In combination Figures 11 to 13 As shown in the drawings, the electric supporting rod of the embodiment further comprises a worm gear assembly, which comprises a worm wheel 12 and a worm 13 in meshing connection. The power source 6 comprises a motor 61 with a power output shaft 611, the motor 61 is in transmission connection with the worm 13, and the worm wheel 12 is in transmission connection with the lead screw 501 in the lead screw assembly 5. In this way, the worm gear assembly transmits the power of the motor 61 to the lead screw 501, which is conducive to ensuring the stability of the structure in operation.

[0081] Specifically, still referring to Figure 13 to and Figure 16 As shown in the drawings, the power output shaft 611 of the motor 61 is provided with a driving gear 612, and the inside of one end of the worm 13 is formed with a gear slot 131, and the gear slot 131 is provided with a first damping member 16. When the driving gear 612 is in meshing connection with the gear slot 131, the first damping member 16 is located between the driving gear 612 and the gear slot 131. At this time, the transmission connection between the power output shaft 611 of the motor 61 and the worm 13 is realized through the cooperation of the driving gear 612 and the gear slot 131, so that the reliable output of the power of the motor 61 can be ensured, and the first damping member 16 can be used to achieve good damping effect. And in specific implementation, the first damping member 16 is preferably made of soft plastic.

[0082] As a preferred embodiment, as shown in the drawings, Figures 11 to 13 The worm wheel of the embodiment comprises a worm wheel driving member 121 and a worm wheel driven member 123 in meshing connection, and a second damping member 122 arranged between the worm wheel driving member 121 and the worm wheel driven member 123, the worm wheel driving member 121 is in meshing connection with the worm 13, and the worm wheel driven member 123 is in transmission connection with the lead screw 501 through the spline. At this time, the structure of the worm wheel 12 not only facilitates installation, but also can achieve good damping effect.

[0083] Specifically, referring to Figure 11 and Figure 12As shown, in the embodiment, the outer circumferential surface of the worm wheel driving part 121 is provided with the oblique teeth 1210 connected with the worm, the center of the worm wheel driving part 121 is provided with the second through hole 1211, and one end of the worm wheel driving part 121 is provided with the plurality of first limiting protrusions 1212 arranged at intervals. The second damping part 122 is in the shape of a gear and is provided with the plurality of damping blocks 1220 arranged at intervals along the circumferential direction of the second damping part 122, and the adjacent two damping blocks 1220 form the damping tooth groove 1221. The worm wheel driven part 123 is provided with the shaft body part 1230 inserted into the second through hole 1211 and the plurality of second limiting protrusions 1232 arranged at intervals on the outer circumferential surface of the shaft body part 1230, wherein the inside of the shaft body part 1230 is formed with the spline hole 1231 matched and connected with the spline part 5012 on the lead screw 501.

[0084] In the assembly, the second damping part 122 is located between the worm wheel driving part 121 and the worm wheel driven part 123, and the plurality of first limiting protrusions 1212 on the worm wheel driving part 121 and the plurality of second limiting protrusions 1232 on the worm wheel driven part 123 are respectively inserted into the corresponding damping tooth grooves 1221 on the second damping part 122, so that the first limiting protrusions 1212 on the worm wheel driving part 121, the damping blocks 1220 on the second damping part 122, and the second limiting protrusions 1232 on the worm wheel driven part 123 are arranged alternately in sequence, and the worm wheel driving part 121, the second damping part 122, and the worm wheel driven part 123 are sleeved together. This structure not only facilitates assembly, but also achieves better damping effect by using the second damping part 122.

[0085] Moreover, based on the worm and gear assembly arranged between the power output shaft 611 of the motor 61 and the lead screw assembly 5, the axial direction of the power output shaft 611 and the axial direction of the lead screw assembly, i.e., the axial direction of the power output shaft 611 and the axial direction of the sleeve assembly, are perpendicular or tend to be perpendicular. At this time, the space occupied in the axial direction of the sleeve assembly can be further reduced, and the arrangement of the electric supporting rod on the vehicle is further facilitated.

[0086] As a preferred embodiment, as Figure 13 and Figure 14 , and in combination with Figure 2As shown, the electric supporting rod of the embodiment further comprises a housing assembly 60, two sides of the housing assembly 60 are connected with the second sleeve 2 and the second ball hinge base 4 respectively. Moreover, the worm and gear assembly and the motor 61 are both installed in the housing assembly 60, and a rotation-stopping structure is arranged between the housing assembly 60 and the motor 61, which is used for preventing the motor 61 from rotating around the axial direction of the power output shaft 611. At this time, the housing assembly 60 can provide an installation basis for the motor 61 and the worm and gear assembly, and the worm and gear assembly and the motor 61 are both installed in the housing assembly 60, which is convenient for overall arrangement and installation. The rotation-stopping structure can effectively prevent the motor 61 from rotating around the axial direction of the power output shaft 611, and is conducive to ensuring the stable and smooth operation of the electric supporting rod.

[0087] As shown in Figure 2 , Figure 6 , Figure 9 and Figure 13 As shown in the embodiment, the two sides of the housing assembly 60 abut against one end of the second spring mounting seat 21 on the second sleeve 2 and one end of the second ball hinge base 4 away from the second ball socket 401. Moreover, the first mounting hole 214 is arranged on the second spring mounting seat 21, the second mounting hole 601 is arranged on the housing assembly 60, and the third mounting hole 402 is arranged on the second ball hinge base 4. The second spring mounting seat 21, the housing assembly 60 and the second ball hinge base 4 are screwed together through the threaded connecting pieces 20 arranged in the third mounting hole 402, the second mounting hole 601 and the first mounting hole 214 in sequence. The threaded connecting pieces 20 are, for example, bolts or screws.

[0088] Moreover, in the embodiment, the threaded connecting pieces 20 are three spaced apart along the circumference of the housing assembly 60, which can improve the reliability of the connection of the second spring mounting seat 21, the housing assembly 60 and the second ball hinge base 4. It is worth noting that the number of the threaded connecting pieces 20 can be two, four or other numbers, which is not limited in the embodiment.

[0089] As shown in Figure 13 and in combination with Figure 2 , Figure 11 and Figure 12 The worm and gear assembly is installed in the housing assembly 60, that is, the worm 12 and the worm gear 13 in the worm and gear assembly are both installed in the housing assembly 60. The two ends of the worm gear 13 are respectively provided with the third bearing 14 and the fourth bearing 15, and the worm gear 13 is rotatably installed in the housing assembly 60 through the third bearing 14 and the fourth bearing 15. The worm 12 is connected with the worm gear 13 in meshing, and the worm 12 is connected with the lead screw 501 through the spline, and in specific implementation, the spline hole 1231 on the worm 12 is connected with the spline part 5012 on the lead screw 501. At this time, the worm 12 can also rotate relative to the housing assembly 60.

[0090] In addition, as shown in Figure 13 and Figure 14 , the shell assembly 60 of the embodiment includes a shell body 300 with a motor mounting port, and an end cover 64 screwed to the motor mounting port. In this way, the shell assembly 60 including the shell body 300 and the end cover 64 can facilitate the installation of the motor 61 and the worm 13, and can also provide protection for the motor 61.

[0091] To ensure the stability of the motor 61 fixed in the shell assembly 60, the embodiment provides an anti-twist device 62 between the shell assembly 60 and the motor 61. As shown in Figure 13 , Figure 15 and Figure 18 and Figure 19 , the anti-twist device 62 is in the form of a cover, and one side of the anti-twist device 62 is provided with two limiting columns 621 arranged at intervals, and the other side of the anti-twist device 62 is provided with two anti-twist protrusions 622 arranged at intervals. Among them, the two limiting columns 621 can be inserted into the corresponding limiting holes 614 on the end of the motor 61, and the two anti-twist protrusions 622 can be inserted into the limiting grooves (not shown in the figure) in the shell assembly 60. At this time, by cooperating the limiting columns 621 with the limiting holes 614 and the anti-twist protrusions 622 with the limiting grooves, the rotation of the motor 61 in the shell assembly 60 can be effectively prevented.

[0092] Moreover, in the embodiment, the end cover 64 is screwed to the end of the shell assembly 60, and the end cover 64 is provided with a tightening portion 643 for tightening the motor 61. By tightening the motor 61 with the tightening portion 643, the stability of the installation of the motor 61 in the shell assembly 60 can be improved.

[0093] As shown in Figure 13 , in the embodiment, the tightening portion 643 includes the end of the end cover 64 inserted into the shell assembly 60, which can be directly tightened on the motor 61, or can be tightened on the motor 61 through a soft material provided on the end of the end cover 64. Among them, the soft material can be, for example, rubber or silicone. In addition, the soft material can be fixed to the end of the end cover 64 by injection molding, or can be detachably connected to the end of the end cover 64.

[0094] As a preferred embodiment, in the embodiment, the end of the end cover 64 is provided with a damping rubber sleeve 63. In actual implementation, one end of the end cover 64 extends into the shell assembly 60, and the damping rubber sleeve 63 is located between the tail of the motor 61 and the end of the end cover 64. The end of the end cover 64 is abutted on the motor 61 through the damping rubber sleeve 63, and the end cover 64 is screw-connected and fixed to the end of the shell assembly 60. After the end cover 64 is installed, there is a certain interference between the damping rubber sleeve 63 and the tail of the motor 61 and the end cover 64. At this time, the damping rubber sleeve 63 provided in cooperation with the anti-twist device 62 in the above description can not only ensure the stability of the motor 61 after installation, but also has a good damping effect and can effectively prevent abnormal noise generated between the motor 61 and the shell assembly 60 during operation.

[0095] In addition, in the embodiment, the end cover 64 is also provided with a wire harness through hole 641 for the inductive device 613 at the tail of the motor 61 and the wire harness connected to the inductive device 613 and the vehicle control system to pass through. The inductive device 613 on the motor 61 includes a plurality of Hall magnetic rings fixed on the power output shaft 611 of the motor 61 and a Hall plate fixed on the end of the motor 61, and the rotation speed of the motor 61 can be stably identified through the inductive device 613. It is worth noting that the inductive device 613 on the motor 61 and the motor 61 can adopt the mature structure in the prior art.

[0096] At the same time, as a further improvement, in the embodiment, a threaded anti-loose structure is provided between the end cover 64 and the shell body 300. The provision of the anti-loose structure can improve the reliability of the installation of the motor 61 in the shell assembly 60. Specifically, as shown in Figure 14 , an anti-rotation protrusion 602 is arranged at the end of the shell body 300, and a limiting block 640 is arranged on the end cover 64. After the end cover 64 is screw-connected and fixed to the shell body 300, the limiting block 640 abuts against the anti-rotation protrusion 602, and the limiting block 640 and the anti-rotation protrusion 602 constitute the anti-loose structure.

[0097] At this time, when the end cover 64 is rotated in the reverse direction, the limiting block 640 is clamped on the anti-rotation protrusion 602, and the anti-rotation protrusion 602 can effectively prevent the loosening of the end cover 64. In addition, the end cover 64 is also provided with a process hole 642, which is used for cooperation with a rotating device or a tool to screw the end cover 64 to the shell body 300.

[0098] Looking back Figure 1 and Figure 2 , and combining Figure 7 and Figure 8As shown, in this embodiment, as a preferred implementation form, first bearing 8 and second bearing 9 are further arranged on both sides of the worm gear. Wherein, the first bearing 8 and the second bearing 9 are respectively installed in the second sleeve 2 and the second ball hinge base 4, and the lead screw 501 rotates relative to the sleeve assembly through the first bearing 8 and the second bearing 9. The arrangement of the first bearing 8 and the second bearing 9 is beneficial to the smooth rotation of the lead screw 501, thereby facilitating to improve the stability of the electric supporting rod operation.

[0099] In particular implementation, Figure 6 and Figure 9 in combination with Figure 2 As shown, the first bearing 8 is installed in the first bearing positioning hole 213 at the end of the second sleeve 2, and the second bearing 9 is installed in the second bearing positioning hole 403 in the second ball hinge base 4. And by using the limiting end faces formed on the end of the second sleeve 2 and in the second ball hinge base 4, and the blocking ring provided on the lead screw 501, and cooperating with both sides of the worm gear, the first bearing 8 and the second bearing 9 can be better limited in the axial direction of the lead screw 501.

[0100] In addition, in this embodiment, a damper 7 is also arranged in the second ball hinge base 4, which is in transmission connection with the lead screw 501 and is used to exert a damping force on the rotation of the lead screw 501. In this way, by arranging the damper 7, a damping force can be exerted on the rotation of the lead screw 501, which is beneficial to control the speed of the electric supporting rod extension and retraction, thereby facilitating to ensure the stability of the sleeve assembly during extension and retraction.

[0101] Specifically, as Figure 2 and Figure 10 As shown, the lead screw 501 is inserted into the damper 7. The damping sheet in the damper 7 is sleeved on the spline part 5012 of the lead screw 501 through the inner teeth 701. And the limiting ribs 702 on the shell of the damper 7 are inserted into the limiting grooves 404 in the second ball hinge base 4. Through the limiting cooperation of the limiting ribs 702 and the limiting grooves 404, the damper 7 can be axially limited to prevent the damper 7 from rotating in the second ball hinge base 4. It is worth noting here that the structure of the damper 7 can refer to the mature structure in the prior art.

[0102] In the specific use of the electric supporting rod of this embodiment, the motor 61 drives the driving gear 612 to rotate, the driving gear 612 drives the worm 13 to rotate, the worm 13 drives the worm gear 12 to rotate, the worm gear 12 drives the lead screw 501 to rotate, and under the action of the lead screw nut 502, the lead screw 501 and the second sleeve 2 relative to the first sleeve 1 along the axial direction of the sleeve assembly are extended and retracted, thereby realizing the lengthening or shortening of the overall length of the electric supporting rod to meet the use requirements.

[0103] The electric supporting rod of the embodiment can reduce the space occupied in the axial direction of the sleeve assembly, facilitate arrangement of the electric supporting rod on the vehicle, and have good practicability.

[0104] Embodiment two

[0105] The embodiment relates to a vehicle provided with the electric supporting rod of embodiment one.

[0106] Specifically, one end of the electric supporting rod is hingedly connected to the vehicle body, and the other end of the electric supporting rod is hingedly connected to the tail door. In specific implementation, the one end of the electric supporting rod is connected to the vehicle body through the first spherical hinge seat 3, and the other end of the electric supporting rod is connected to the tail door through the second spherical hinge seat 4, so that the first spherical hinge seat 3 and the second spherical hinge seat 4 are respectively hingedly connected to the vehicle body and the tail door, and the multi-directional change of the electric supporting rod during stretching and contraction can be realized.

[0107] The vehicle of the embodiment can not only realize stable operation of the sleeve assembly during stretching and contraction when the tail door is opened, but also reduce the space occupied in the axial direction of the sleeve assembly, facilitate arrangement and installation of the electric supporting rod on the vehicle, and have good use effect.

[0108] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An electric supporting rod, characterized in that: comprising a sleeve assembly and a driving assembly; the sleeve assembly comprises a first sleeve (1) and a second sleeve (2) connected in a plug-in manner, and one end of the first sleeve (1) and the second sleeve (2) connected in a plug-in manner relative to each other, a first ball hinge seat (3) arranged at the other end of the first sleeve (1), and a second ball hinge seat (4) arranged at the other end of the second sleeve (2); the driving assembly comprises a power source (6), and a screw assembly (5) connected in transmission with a power output shaft (611) of the power source (6); the screw assembly (5) is connected between the first sleeve (1) and the second sleeve (2) to drive the first sleeve (1) and the second sleeve (2) to slide along the axial direction of the sleeve assembly, and the axial direction of the power output shaft (611) is arranged intersecting the axial direction of the sleeve assembly.

2. The electric supporting rod according to claim 1, characterized in that: a reset member is connected between the first sleeve (1) and the second sleeve (2), and when the first sleeve (1) and the second sleeve (2) slide relative to each other to extend the sleeve assembly, the reset member stores energy; and the reset member releases energy to reset the first sleeve (1) and the second sleeve (2) to shorten the sleeve assembly.

3. The electric supporting rod according to claim 2, characterized in that: a first spring mounting seat (11) is arranged on the first sleeve (1), and a second spring mounting seat (21) is arranged on the second sleeve (2); and the reset member comprises a spring (10) sleeved outside the sleeve assembly, and the two ends of the spring (10) are connected with the first spring mounting seat (11) and the second spring mounting seat (21) respectively.

4. The electric supporting rod according to claim 2, characterized in that: one end of the first ball hinge seat (3) is inserted into the first sleeve (1) and can rotate around the axial direction of the first sleeve (1); and an anti-disengagement structure is arranged between the first ball hinge seat (3) and the first sleeve (1), and the anti-disengagement structure is used to prevent the first ball hinge seat (3) from disengaging from the first sleeve (1) along the axial direction of the first sleeve (1).

5. The electric supporting rod according to any one of claims 1-4, characterized in that: further comprising a worm gear assembly, the worm gear assembly comprises a worm gear (12) and a worm (13) connected in meshing manner; the power source (6) comprises a motor (61) having the power output shaft (611), the motor (61) is connected in transmission with the worm (13), and the worm gear (12) is connected in transmission with a screw (501) in the screw assembly (5).

6. The electric supporting rod according to claim 5, characterized in that: a driving gear (612) is arranged on the power output shaft (611), the driving gear (612) is connected in meshing manner with the worm (13), and a first damping member (16) is arranged between the driving gear (612) and the worm (13); and / or, ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The worm gear (12) comprises a worm gear driving part (121) and a worm gear driven part (123) connected in meshing, and a second damping part (122) arranged between the worm gear driving part (121) and the worm gear driven part (123), the worm gear driving part (121) is connected in meshing with the worm (13), and the worm gear driven part (123) is in transmission connection with the lead screw (501).

7. The electric prop rod according to claim 5, characterized in that: Further comprising a housing assembly (60), two sides of the housing assembly (60) are connected with the second sleeve (2) and the second ball hinge seat (4) respectively; The worm gear and worm assembly and the motor (61) are both installed in the housing assembly (60), and a rotation stopping structure is arranged between the housing assembly (60) and the motor (61), the rotation stopping structure is used for preventing the motor (61) from rotating around the axial direction of the power output shaft (611).

8. The electric prop rod according to claim 7, characterized in that: The housing assembly (60) comprises a housing body (300) with a motor mounting opening, and an end cover (64) arranged at the motor mounting opening; The end cover (64) is provided with a clamping part (643) for clamping the motor (61).

9. The electric prop rod according to claim 5, characterized in that: Further comprising a first bearing (8) and a second bearing (9) arranged on both sides of the worm gear, the first bearing (8) and the second bearing (9) are respectively installed in the second sleeve (2) and the second ball hinge seat (4), and the lead screw rotates relative to the sleeve assembly through the first bearing (8) and the second bearing (9); and / or, The second ball hinge seat (4) is provided with a damper (7), the damper (7) is in transmission connection with the lead screw (501), and is used for applying damping force to the rotation of the lead screw (501).

10. A vehicle, characterized in that: The vehicle is provided with the electric prop rod according to any one of claims 1-9.

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