CN217602419U

CN217602419U - Novel coaxial tension spring support rod

Info

Publication number: CN217602419U
Application number: CN202221068911.4U
Authority: CN
Inventors: 孙云飞; 杨斌; 程鹏; 叶森
Original assignee: Ningbo Huakai Electronic Technology Co ltd
Current assignee: Ningbo Huakai Electronic Technology Co ltd
Priority date: 2022-05-05
Filing date: 2022-05-05
Publication date: 2022-10-18
Anticipated expiration: 2032-05-05

Abstract

A novel coaxial tension spring support rod comprises an outer sleeve, an inner sleeve and a motor sleeve; a screw rod is fixedly arranged in the outer sleeve in a penetrating way; the inner sleeve is movably arranged in the outer sleeve in a penetrating mode, at least part of the inner sleeve is exposed out of one end of the outer sleeve, and the inner sleeve is in threaded connection with the screw rod; the motor sleeve is fixedly connected to the other end of the outer sleeve, a motor assembly is fixedly arranged in the motor sleeve, and an output shaft of the motor assembly is in transmission connection with the screw rod; the motor assembly can drive the screw rod to rotate, and the screw rod rotates to drive the inner sleeve to extend out or retract relative to the outer sleeve; the screw rod comprises a threaded part and a spline part which are in threaded connection with the inner sleeve, the spline part extends into the motor sleeve, an output shaft of the motor assembly is in transmission connection with a spline sleeve, the spline sleeve is also provided with a spline hole, and the spline hole is in transmission fit with the spline part; the utility model discloses an rely on the cooperation of spline portion and spline housing to realize the transmission between motor element's output shaft and the lead screw, improved production efficiency greatly.

Description

Novel coaxial tension spring support rod

Technical Field

The utility model relates to a car tail-gate field, concretely relates to novel coaxial extension spring vaulting pole.

Background

The electric stay bar for the automobile tail door is mainly used for opening and closing the automobile tail door, generally comprises a screw rod, a motor for driving the screw rod to rotate, an inner sleeve and an outer sleeve, wherein the motor and the screw rod are positioned in the outer sleeve;

and the transmission between motor and the lead screw support among the prior art, all rely on between the output shaft of motor and the lead screw cover establish the bearing and realize, but this kind of structure just makes the vaulting pole require very high to the axiality between motor output shaft and the lead screw in the installation, this has just led to the assembly degree of difficulty of vaulting pole under the existing structure very high, and in addition in the use in case take place some dislocation between the axis of motor output shaft and lead screw just can lead to the vaulting pole unable operation, this vaulting pole life under also making the existing structure is shorter.

Disclosure of Invention

In order to overcome among the prior art between car tail-gate vaulting pole motor and the lead screw transmission mode perfect inadequately and lead to vaulting pole assembly difficulty and the short not enough of life-span, the utility model provides a novel coaxial extension spring vaulting pole.

The utility model provides a technical scheme of its technical problem is: a novel coaxial tension spring strut, comprising:

the outer sleeve is fixedly provided with a screw rod in a penetrating way;

the inner sleeve is movably arranged in the outer sleeve in a penetrating way, at least part of the inner sleeve is exposed out of one end of the outer sleeve, and the inner sleeve is in threaded connection with the screw rod;

the motor sleeve is fixedly connected to the other end of the outer sleeve, a motor assembly is fixedly arranged in the motor sleeve, and an output shaft of the motor assembly is in transmission connection with the screw rod;

the motor component can drive the screw rod to rotate, and the screw rod rotates to drive the inner sleeve to extend or retract relative to the outer sleeve;

the screw rod comprises a threaded portion and a spline portion, the threaded portion is connected with the inner sleeve in a threaded mode, the spline portion extends into the motor sleeve, a spline sleeve is connected to an output shaft of the motor assembly in a transmission mode, a spline hole is further formed in the spline sleeve, and the spline hole is in transmission fit with the spline portion so that the motor assembly drives the screw rod to rotate.

Furthermore, a damping component is further sleeved on the spline part, the spline part penetrates through the damping component and then is matched with the spline sleeve, and two ends of the damping component are respectively propped against the outer sleeve and the motor component.

Further, the damping subassembly includes a damper shell, a plurality of snap ring of damper shell internal fixation, and still press from both sides between two adjacent snap rings and be equipped with a insection gasket and two at least friction discs, the friction disc closely laminate in the both sides of insection gasket, the center of insection gasket with spline portion mesh, damper shell internal thread is fixed with a damper lid, is close to still be provided with a wave spring between the snap ring of damper lid and the damper lid.

Furthermore, because the insection gasket is meshed with the spline part, when the screw rod has a rotation trend, the insection gasket generates a rotation trend along with the rotation trend, but because the friction plates at two sides of the insection gasket are tightly attached to two sides of the insection gasket under the action of the snap ring, the rotation trend can be prevented by the friction force between the insection gasket and the friction plates, so that the damping assembly plays a damping role when the screw rod rotates, and the rotation of the screw rod can be prevented when the motor assembly is not started.

Further, still be provided with the gear box in the motor sleeve, motor element's output shaft is in on the input of gear box, the spline housing transmission is connected the gear box in, and be located on the output of gear box, just the gear box is located motor element and damping component between.

Further, interior sleeve pipe is kept away from one of interior sheathed tube is served and is connected with the extension spring seat, the extension spring seat with motor sleeve pipe between be connected with an extension spring, extension spring seat and motor sleeve pipe on all offer and be used for inlaying the establishment the extension spring groove of extension spring.

Further, still be provided with a natural bradyseism pad in the motor sleeve, and one of them bradyseism pad cover arrange in gear box and damping component between, and another of them bradyseism pad cover establish motor element's tail end, the side butt of bradyseism pad is in on motor sleeve's the internal face.

Furthermore, an upper ball socket is connected to one end of the inner sleeve exposed out of the outer sleeve, and a lower ball socket is connected to one end of the motor sleeve far away from the outer sleeve.

Further, a support used for installing a control panel is further arranged in the motor casing, the support is clamped between the motor support and the lower ball socket, a sheath is further arranged on the lower ball socket in a penetrating mode and communicated with the interior of the motor casing, and a lead in the motor casing can extend out of the motor casing through the sheath.

The utility model discloses an operation mode:

when the automobile tail gate is opened, the motor assembly is started, an output shaft of the motor assembly drives the spline sleeve to rotate through the gear box, the spline sleeve drives the screw rod meshed with the spline sleeve to rotate, the inner sleeve in threaded connection with the screw rod transversely moves along with the rotation of the screw rod, and the part of the inner sleeve exposed out of the outer sleeve extends, so that the stay bar integrally extends to jack the automobile tail gate;

when the automobile tail gate is closed, the output shaft of the motor assembly reversely rotates to further drive the screw rod to reversely rotate, and the part of the inner sleeve exposed out of the outer sleeve is shortened, so that the stay bar is integrally shortened to bring the automobile tail gate down;

and when the automobile tail gate is opened and closed, when the motor assembly loses power suddenly, the damping assembly can prevent the screw rod from rotating because the damping assembly is connected between the screw rod and the motor assembly, so that the inner sleeve can be prevented from automatically moving towards the inner sleeve, and the automobile tail gate can be suspended even if the motor assembly loses power.

The beneficial effects of the utility model reside in that:

1. the output shaft of the motor assembly and the lead screw are in transmission by virtue of the matching of the spline part and the spline sleeve, and the advantage of better centering property by virtue of spline coupling can be used for avoiding repeated debugging on the coaxiality between the output shaft of the motor and the lead screw in the installation process, so that the assembly difficulty of the support rod can be effectively reduced, the production efficiency is greatly improved, and the service life of the support rod under the structure is prolonged as compared with the original mode of simply relying on bearing transmission;

2. the damping assembly is arranged between the output shaft of the motor assembly and the screw rod, and the screw rod can be prevented from rotating when not driven by the motor assembly by the damping assembly, so that the automobile tail door can keep hovering when the motor assembly loses power in the opening and closing process of the automobile tail door, and accidents are effectively avoided;

3. be provided with a plurality of bradyseisms pad in motor sleeve to absorb the vibrations part that motor element produced at the operation in-process, thereby reduce the noise that the vaulting pole produced in the use, cut because the bradyseisms pad still hugs closely on motor sleeve's inner wall, so can also play sealed effect.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is an enlarged schematic view at a in fig. 2.

Fig. 4 is an explosion diagram of the present invention.

Fig. 5 is a schematic diagram of the screw and spline housing of the present invention.

Fig. 6 is an exploded view of the damping assembly of the present invention.

Fig. 7 is a cross-sectional view of the damping assembly of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

It will be understood that, although the terms upper, middle, lower, top, end, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another for ease of understanding, and are not used to define any directional or sequential limitations.

Examples

With reference to fig. 1 to 5, a novel coaxial tension spring support rod comprises an outer sleeve 1, an inner sleeve 2 and a motor sleeve 3; a screw rod 4 is fixedly arranged in the outer sleeve 1 in a penetrating manner; the inner sleeve 2 is movably arranged in the outer sleeve 1 in a penetrating way, at least part of the inner sleeve 2 is exposed out of one end of the outer sleeve 1, and the inner sleeve 2 is in threaded connection with the screw rod 4; the motor sleeve 3 is fixedly connected to the other end of the outer sleeve 1, a motor component 5 is fixedly arranged in the motor sleeve, and an output shaft of the motor component 5 is in transmission connection with the screw rod 4; the motor assembly 5 can drive the screw rod 4 to rotate, and the screw rod 4 rotates to drive the inner sleeve 2 to extend or retract relative to the outer sleeve 1; the lead screw 4 comprises a thread part 6 and a spline part 7 which are in threaded connection with the inner sleeve 2, the spline part 7 extends into the motor sleeve 3, a spline sleeve 8 is connected to an output shaft of the motor assembly 5 in a transmission mode, a spline hole 9 is further formed in the spline sleeve 8, and the spline hole 9 is in transmission fit with the spline part 7 so that the motor assembly 5 drives the lead screw 4 to rotate.

In this embodiment, a damping assembly 10 is further sleeved on the spline portion 7, the spline portion 7 penetrates through the damping assembly 10 and then is matched with the spline housing 8, and two ends of the damping assembly 10 are respectively abutted by the outer sleeve 1 and the motor assembly 5.

As shown in fig. 6 to 7, the damping assembly 10 includes a damper housing 11, a plurality of snap rings 12 are fixed in the damper housing 11, a corrugated gasket 13 and at least two friction plates 14 are further clamped between two adjacent snap rings 12, the friction plates 14 are tightly attached to two sides of the corrugated gasket 13, the center of the corrugated gasket 13 is engaged with the spline portion 7, a damper cover 15 is fixed in the damper housing 11 through an internal thread, and a wave spring 16 is further disposed between the snap ring 12 close to the damper cover 15 and the damper cover 15.

Mode of action of the damper assembly in this embodiment: because the insection gasket 13 is meshed with the spline part 7, when the screw rod 4 has a rotation trend, the insection gasket 13 generates a rotation trend along with the rotation trend, but because the friction plates 14 at two sides of the insection gasket 13 are tightly attached to two sides of the insection gasket 13 under the action of the snap ring 12, the rotation trend can be prevented by the friction force between the insection gasket 13 and the friction plates 14, so that the damping assembly 10 plays a damping role when the screw rod 4 rotates, and can prevent the rotation of the screw rod 4 when the motor assembly 5 is not started.

In this embodiment, still be provided with gear box 17 in the motor sleeve 3, the output shaft of motor element 5 is in on the input of gear box 17, spline housing 8 transmission is connected gear box 17 in, and be located on the output of gear box 17, just gear box 17 is located motor element 5 and damping component 10 between.

In this embodiment, the interior sleeve pipe 2 is kept away from one end of interior sleeve pipe 2 is connected with extension spring seat 18, extension spring seat 18 with motor sleeve 3 between be connected with an extension spring 19, extension spring seat 18 and motor sleeve 3 on all offer and be used for inlaying and establish extension spring 19's extension spring groove 20.

In this embodiment, still be provided with two shock absorption pads 21 in the motor sleeve 3, and one of them shock absorption pad 21 cover arrange in gear box 17 and damping component 10 between, and another shock absorption pad 21 cover establish the tail end of motor component 5, the side butt of shock absorption pad 21 is in on the internal face of motor sleeve 3.

In this embodiment, an upper ball socket 22 is connected to one end of the inner sleeve 2 exposed outside the outer sleeve 1, and a lower ball socket 23 is connected to one end of the motor sleeve 3 remote from the outer sleeve 1.

In this embodiment, a support 24 for mounting a control board is further disposed in the motor casing 3, the support 24 is clamped between the motor support 24 and the lower ball socket 23, a sheath 25 is further disposed on the lower ball socket 23 in a penetrating manner, the sheath 25 is communicated with the inside of the motor casing 3, and a lead in the motor casing 3 can extend out of the motor casing 3 through the sheath 25.

The operation mode of the embodiment is as follows:

when the automobile tail gate is opened, the motor assembly 5 is started, the output shaft of the motor assembly 5 drives the spline housing 8 to rotate through the gear box 17, the spline housing 8 drives the screw rod 4 meshed with the spline housing to rotate, the inner sleeve 2 in threaded connection with the screw rod 4 transversely moves along with the rotation of the screw rod 4, and then the part of the inner sleeve 2 exposed out of the outer sleeve 1 extends, so that the whole stay bar extends to jack the automobile tail gate;

when the automobile tail gate is closed, the output shaft of the motor assembly 5 rotates reversely, so that the screw rod 4 is driven to rotate reversely, the part of the inner sleeve 2 exposed out of the outer sleeve 1 is shortened, and the stay bar is integrally shortened so as to bring the automobile tail gate down;

and when the automobile tail gate is opened and closed, when the motor assembly 5 loses power suddenly, because the damping assembly 10 is connected between the screw rod 4 and the motor assembly 5, the damping assembly 10 can prevent the screw rod 4 from rotating, so that the inner sleeve 2 can be prevented from automatically moving towards the inner sleeve 1, and the automobile tail gate can also realize hovering even if the motor assembly 5 loses power.

The advantages of this embodiment are: the installation of vaulting pole becomes just to add simple swift, has effectively improved production efficiency, and the life-span of vaulting pole is also stronger relatively, and the car tail-gate of using this vaulting pole can realize hovering opening and close the in-process.

The specific embodiments are only for explaining the present invention, and it is not a limitation to the present invention, and those skilled in the art can make modifications to the embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent law within the scope of the claims of the present invention.

Claims

1. A novel coaxial tension spring brace rod, comprising:

the outer sleeve (1) is internally and fixedly provided with a screw rod (4) in a penetrating way;

the inner sleeve (2) is movably arranged in the outer sleeve (1) in a penetrating way, at least part of the inner sleeve (2) is exposed out of one end of the outer sleeve (1), and the inner sleeve (2) is in threaded connection with the screw rod (4);

the motor sleeve (3) is fixedly connected to the other end of the outer sleeve (1), a motor component (5) is fixedly arranged in the motor sleeve, and an output shaft of the motor component (5) is in transmission connection with the screw rod (4);

the motor assembly (5) can drive the screw rod (4) to rotate, and the screw rod (4) rotates to drive the inner sleeve (2) to extend or retract relative to the outer sleeve (1);

the method is characterized in that: lead screw (4) include with interior sleeve pipe (2) threaded connection screw portion (6) and spline portion (7), spline portion (7) stretch into to motor sleeve (3) in, the transmission is connected with a spline housing (8) on the output shaft of motor element (5), spline hole (9) have still been seted up on spline housing (8), spline hole (9) and spline portion (7) transmission cooperation, so that motor element (5) drive lead screw (4) rotate.

2. The novel coaxial tension spring stay bar of claim 1, characterized in that: the damping device is characterized in that the spline part (7) is further sleeved with a damping assembly (10), the spline part (7) penetrates through the damping assembly (10) and then is matched with the spline sleeve (8), and two ends of the damping assembly (10) are respectively abutted by the outer sleeve (1) and the motor assembly (5).

3. The novel coaxial tension spring stay bar of claim 2, characterized in that: damping subassembly (10) include a damper shell (11), a plurality of snap ring (12) of damper shell (11) internal fixation, and still press from both sides between two adjacent snap rings (12) and be equipped with a insection gasket (13) and two at least friction disc (14), friction disc (14) closely laminate in the both sides of insection gasket (13), the center of insection gasket (13) with spline portion (7) mesh mutually, damper shell (11) internal thread fixation has a damper lid (15), is close to still be provided with a wave spring (16) between snap ring (12) and the damper lid (15) of damper lid (15).

4. The novel coaxial tension spring brace rod of claim 2, which is characterized in that: still be provided with gear box (17) in motor sleeve (3), the output shaft of motor element (5) is in on the input of gear box (17), spline housing (8) transmission is connected gear box (17) in, and be located on the output of gear box (17), just gear box (17) are located motor element (5) and damping component (10) between.

5. The novel coaxial tension spring stay bar of claim 1, characterized in that: interior sleeve pipe (2) are kept away from one of interior sleeve pipe (2) is served and is connected with extension spring seat (18), extension spring seat (18) with motor sleeve pipe (3) between be connected with an extension spring (19), extension spring seat (18) and motor sleeve pipe (3) on all offer and be used for inlaying and establish extension spring groove (20) of extension spring (19).

6. The novel coaxial tension spring stay bar of claim 4, characterized in that: still be provided with a plurality of bradyseism pad (21) in motor sleeve pipe (3), and one of them bradyseism pad (21) cover arrange in gear box (17) and damping component (10) between, and another of them bradyseism pad (21) cover establish the tail end of motor component (5), the side butt of bradyseism pad (21) is in on the internal face of motor sleeve pipe (3).

7. The novel coaxial tension spring stay bar of claim 1, characterized in that: the end, exposed outside the outer sleeve (1), of the inner sleeve (2) is connected with an upper ball socket (22), and the end, far away from the outer sleeve (1), of the motor sleeve (3) is connected with a lower ball socket (23).

8. The novel coaxial tension spring brace rod of claim 7, which is characterized in that: still be provided with a support (24) that is used for installing the control panel in motor sleeve (3), support (24) press from both sides and establish motor support (24) and lower ball socket (23) between, still wear to be equipped with a sheath (25) on lower ball socket (23), sheath (25) intercommunication the inside of motor sleeve (3), the wire in the motor sleeve (3) of writing can pass through sheath (25) stretch out to outside motor sleeve (3).