CN108590420B

CN108590420B - Electric stay bar

Info

Publication number: CN108590420B
Application number: CN201810489426.6A
Authority: CN
Inventors: 尹燕军; 廖文辉; 王龙
Original assignee: Guangdong Dongjian Automobile Technology Co Ltd
Current assignee: Guangdong Dongjian Automobile Technology Co Ltd
Priority date: 2018-05-21
Filing date: 2018-05-21
Publication date: 2023-11-14
Anticipated expiration: 2038-05-21
Also published as: CN108590420A

Abstract

The invention discloses an electric stay bar, which comprises an outer sleeve, an outer guide pipe, an inner guide pipe, a motor, a screw rod, a first connector and a second connector, wherein the motor and the outer guide pipe are arranged in the outer sleeve along the axial direction of the outer sleeve, the motor is connected with the screw rod, the inner guide pipe is in threaded fit with the screw rod, the inner guide pipe moves under the guiding of the outer guide pipe, the inner guide pipe is in anti-rotation fit with the outer guide pipe, the first connector and the second connector are respectively arranged at two ends of the outer sleeve, the first connector is fixed at the end part of the outer sleeve, the second connector is fixed at the end part of the inner guide pipe, and the motor is a brushless motor. The electric stay bar is stable in work, not easy to fail and long in service life, meanwhile, an encoder can be omitted, manufacturing bearing cost is reduced, efficiency is high, electric sparks cannot be generated, and a good effect of simulating electromagnetic interference can be obtained.

Description

Electric stay bar

Technical Field

The invention relates to the technical field of vehicle accessories, in particular to an electric stay bar.

Background

At present, all the automobile tail gate stay bars on the market adopt direct current carbon brush motors, and the direct current carbon brush motors are mainly used for driving screw rods to do linear motion after being decelerated by reduction boxes, so that tail gates are driven to be opened or closed. This approach has several drawbacks: the carbon brush is worn during operation, and if the worn carbon powder is accumulated to the adjacent commutating segments in the commutating segment isolating grooves, the adjacent commutating segments are short-circuited, so that the motor is invalid; in addition, the carbon brush is a wear part, which can affect the service life of the motor; an encoder is additionally arranged at the tail end of the motor, and motor actuation information is fed back to the control module; the highest efficiency of the carbon brush motor is generally about 65%, and the working current is larger; when the carbon brush motor commutates, electric spark can be generated, and electromagnetic interference can be generated.

Disclosure of Invention

Based on the above, the invention aims to overcome the defects of the prior art, and provides the electric stay bar which is stable in work, not easy to fail and long in service life, meanwhile, an encoder can be omitted, the manufacturing cost is reduced, the efficiency is high, electric sparks cannot be generated, and a better effect of simulating electromagnetic interference can be obtained.

In order to achieve the above purpose, the invention adopts the following technical scheme:

the electric stay bar comprises an outer sleeve, an outer guide pipe, an inner guide pipe, a motor, a screw rod, a first connector and a second connector, wherein the motor and the outer guide pipe are arranged in the outer sleeve along the axial direction of the outer sleeve, the motor is connected with the screw rod, the inner guide pipe is in threaded fit with the screw rod, the inner guide pipe moves under the guide of the outer guide pipe, the inner guide pipe is in anti-rotation fit with the outer guide pipe, the first connector and the second connector are respectively arranged at two ends of the outer sleeve, the first connector is fixed at the end part of the outer sleeve, the second connector is fixed at the end part of the inner guide pipe, and the motor is a hollow cup.

The technical scheme is further described below:

in one embodiment, the outer sleeve comprises a sleeve body coaxially arranged with the outer catheter and a shielding part arranged at one end of the sleeve body, the shielding part is provided with a containing groove for containing the pressure spring, one end of the pressure spring abuts against the shielding table, the other end of the pressure spring abuts against the inside of the containing groove, and the shielding part abuts against the second connector.

In one embodiment, the inner wall of the protective sleeve is provided with a lubricating coating.

In one embodiment, the motor is arranged between the motor and the outer guide tube, and the damper is sleeved on the screw rod.

In one embodiment, the device further comprises an adapter arranged in the outer sleeve, the adapter is fixed on the inner wall of the outer sleeve, the damper is fixed in the adapter, and a buffer piece is arranged between the adapter and the damper.

In one embodiment, the adapter comprises a first adapter member and a second adapter member which are axially arranged along the screw rod, a first coaming is arranged at one end, away from the second adapter member, of the first adapter member, a second coaming is arranged at one end, away from the first adapter member, of the second adapter member, the first adapter member and the second adapter member are in anti-rotation fit, and the damper is matched between the first coaming and the second coaming.

In one embodiment, the device further comprises a bearing, the bearing is arranged between the adapter and the outer guide pipe, a clamping groove for accommodating the bearing is formed in the second coaming, the bearing is arranged in the clamping groove and in interference fit with the second coaming, and the bearing is sleeved on the screw rod.

In one embodiment, the waterproof glue is sleeved on the screw rod and is located between the bearing and the outer guide pipe, one end, close to the bearing, of the outer guide pipe is connected with a fixing seat, the fixing seat is fixed on the inner wall of the outer sleeve, and the waterproof glue is provided with two first waterproof protrusions which are in contact with the screw rod and one second waterproof protrusion which is in contact with the fixing seat.

In one embodiment, the first connector is an integrated first ball socket, and the second connector comprises a fixed head connected with the inner conduit and a second ball socket connected with the fixed head; the outer sleeve is an integrated sleeve.

In one embodiment, the motor further comprises a reduction gearbox arranged in the outer sleeve, and the motor is connected with the screw rod through the reduction gearbox.

The present invention includes at least the following advantages, however, not all of the following need be achieved at the same time for any one product to practice the invention:

1. the electric stay bar is internally provided with the hollow cup brushless motor, the hollow cup brushless motor does not contain carbon brushes, and the electric stay bar is not easy to short-circuit during operation, so that longer service life can be provided for the electric stay bar; the hollow cup brushless motor does not contain carbon brushes, so that noise generated by friction between the carbon brushes and the reversing sheet does not exist, and a better silencing effect is achieved; the hollow cup adopts electronic commutation in a brushless way, no electric spark is generated, and a better EMI inhibition effect can be obtained; the hollow cup brushless motor is provided with three positioning Hall elements, can be synchronously used as a motor operation feedback signal, and does not need to additionally increase an encoder; the hollow cup brushless motor is directly connected with the coil, so that the contact impedance between the traditional carbon brush and the commutating segment is avoided, the operation is more stable, and the loss is less; the hollow cup brushless motor has no iron core and no eddy current loss, the efficiency can reach 80-90%, and the electric energy can be greatly saved; in addition, the hollow cup brushless motor does not have an iron core, the motor starting and braking response is faster than that of a carbon brush motor, and the electric stay bar runs more smoothly and accurately. In conclusion, the electric stay bar can be more stable, low in noise, energy-saving and reliable in operation, and the replacement frequency of the electric stay bar of the automobile is reduced.

2. The pressure spring has the effect of assisting in opening and closing the door and hovering. The protective sleeve is used for providing guidance for compression spring expansion and contraction on one hand and shielding the compression spring on the other hand, so that the compression spring is prevented from being exposed.

3. The inner wall of the protective sleeve is provided with a lubricating coating, so that the protective sleeve has lubricating and wear-resisting effects, and the sound generated by friction between the pressure spring and the protective sleeve can be effectively reduced.

4. The damper is used for providing damping force, so that the electric stay bar has enough static holding force, and the tail gate has better hovering effect.

5. The adapter is used for being fixed in the outer tube with the attenuator, and is equipped with the bolster between adapter and the attenuator for the attenuator can cushion and realize automatically regulated's effect, guarantees that attenuator and lead screw are concentric.

6. The adapter is split into two parts, so that the damper and the buffer piece are convenient to install. At the same time, the two parts of the adapter are in anti-rotation fit for preventing assembly dislocation between the first adapter and the second adapter, so that assembly errors are caused.

7. The adapter is also used for mounting a bearing, and the bearing is in interference fit with the adapter, so that concentricity errors caused by fit clearances are eliminated.

8. The waterproof glue is used for realizing the tightness of the bearing, the damper and the motor inside the bearing and the like, and realizing the waterproof. Simultaneously two first waterproof bulges are used for guaranteeing the leakproofness with between the movable lead screw on the waterproof adhesive, and one second waterproof bulge is then when guaranteeing the leakproofness with between the fixing base, is used for reducing the preparation degree of difficulty of waterproof adhesive.

9. The bottom end of the outer sleeve is sealed by the first connector, other internal components such as a motor and the like are protected, and meanwhile, the first connector is an integrally formed piece, so that the structure is simple, the strength is high, and the assembly to the outer sleeve is easy; the second connector is a split piece, so that the second connector with a complex structure is convenient to process and manufacture.

10. The integrated outer sleeve reduces the number of parts, and the motor, the outer guide pipe, the inner guide pipe, the screw rod and the like are integrally assembled into the integrated outer sleeve, so that assembly errors are avoided, concentricity errors are eliminated, and the screw rod operates more smoothly.

11. The motor reduces the speed through the reduction gearbox, and transmits power to the screw rod after the torque is improved.

Drawings

FIG. 1 is a cross-sectional view of an electric strut according to one embodiment;

FIG. 2 is a diagram showing the assembly relationship between the outer catheter and the inner catheter of FIG. 1;

FIG. 3 is a view in the direction C of FIG. 2;

FIG. 4 is an exploded view of the inner catheter of FIG. 2;

FIG. 5 is an enlarged view at A of FIG. 1;

FIG. 6 is a schematic view of the outer sleeve of FIG. 1;

FIG. 7 is a schematic view of the protective sleeve of FIG. 1;

FIG. 8 is an enlarged view at B of FIG. 1;

FIG. 9 is a schematic view of the adapter of FIG. 8;

FIG. 10 is a diagram of the assembly relationship between the reduction gearbox and the adapter of FIG. 1;

fig. 11 is a schematic structural view of the waterproof adhesive in fig. 8;

FIG. 12 is a schematic view of the first connector in FIG. 1;

fig. 13 is a schematic structural view of the second connector in fig. 1.

Reference numerals illustrate:

100. outer sleeve, 110, baffle, 210, motor, 220, reduction gearbox, 230, screw rod, 240, damper, 250, bearing, 260, waterproof glue, 261, first waterproof protrusion, 262, second waterproof protrusion, 300, adapter, 310, first adapter, 311, first coaming, 320, second adapter, 321, second coaming, 3211, clamping groove, 330, buffer, 400, protective sleeve, 410, sleeve body, 420, shielding part, 421, accommodation groove, 500, pressure spring, 600, outer catheter, 610, fixing base, 620, guide groove, 700, inner catheter, 710, sliding head, 711, first connecting section, 7111, protruding rib, 712, second connecting section, 7121, connecting protrusion, 720, catheter body, 721, connecting hole, 800, first connecting head, 900, second connecting head, 910, fixing head, 911, baffle, 920, second connecting head.

Detailed Description

The present invention will be further described in detail with reference to the drawings and the detailed description, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the detailed description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the invention.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly fixed to the other element or be fixed to the other element through intervening elements. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. Unless specifically stated otherwise, the terms "first" and "second" and the like herein, are used solely to distinguish one from another component, element, step, or the like in the specification and do not denote a logical or sequential relationship between the individual components, elements, steps, or the like.

As shown in fig. 1, the electric stay bar according to an embodiment of the present invention includes an outer sleeve 100, an outer catheter 600, an inner catheter 700, a motor 210, a screw 230, a first connector 800 and a second connector 900. The motor 210 and the outer catheter 600 are disposed in the outer sheath 100 along the axial direction of the outer sheath 100. The motor 210 is connected with the screw 230, and the inner conduit 700 is sleeved on the screw 230 and is in threaded fit with the screw 230. The inner catheter 700 moves under the guide of the outer catheter 600, and the inner catheter 700 is in a non-rotational engagement with the outer catheter 600. By "anti-rotation fit" is meant that no relative rotation occurs between the two components that are mated. The first connector 800 and the second connector 900 are respectively disposed at two ends of the outer sleeve 100, the first connector 800 is fixed at an end of the outer sleeve 100, and the second connector 900 is fixed at an end of the inner catheter 700. The first connector 800 is used for being connected with a vehicle body, and the second connector 900 is used for being connected with a tail gate.

The forward rotation, reverse rotation, and stop of the motor 210 can be controlled by an ECU (Electronic Control Unit, an electronic control unit, also referred to as a car computer). The motor 210 may drive the screw 230 to rotate, and the screw 230 is in threaded connection with the inner catheter 700. Because of the anti-rotation fit between the inner catheter 700 and the outer catheter 600, the inner catheter 700 only moves linearly under the action of the screw rod 230 and does not rotate, so that the rotary motion of the screw rod 230 is converted into the linear motion of the inner catheter 700, and the expansion and contraction of the inner catheter 700 are realized. Meanwhile, the screw rod 230 and the inner catheter 700 are in threaded fit and telescopic arrangement, so that the tail gate can be manually controlled to be opened or closed under the condition of power failure, and the use is convenient.

In this embodiment, the motor 210 is a hollow cup brushless motor, and the hollow cup brushless motor does not contain carbon brushes, so that the hollow cup brushless motor is not easy to short-circuit during operation, and can provide a longer service life for the electric stay bar; the hollow cup brushless motor does not contain carbon brushes, so that noise generated by friction between the carbon brushes and the reversing sheet does not exist, and a better silencing effect is achieved; the hollow cup adopts electronic commutation in a brushless way, no electric spark is generated, and a better EMI (Electromagnetic Interference ) inhibition effect can be obtained; the hollow cup brushless motor is provided with three positioning Hall elements, can be synchronously used as a feedback signal for the operation of the motor 210, and does not need to additionally increase an encoder; the hollow cup brushless motor is directly connected with the coil, so that the contact impedance between the traditional carbon brush and the commutating segment is avoided, the operation is more stable, and the loss is less; the hollow cup brushless motor has no iron core and no eddy current loss, the efficiency can reach 80-90%, and the electric energy can be greatly saved; in addition, the coreless brushless motor has no iron core, the motor 210 starts and brake response is faster than the carbon brush motor 210, and the electric stay bar operates more smoothly and accurately. In a word, electric stay can be more steady, low noise, energy-conservation, reliable when the operation, reduce the electric stay change frequency of car. It should be noted that, the coreless brushless motor is a mature product in the existing market, and one innovation point of the invention is that the coreless brushless motor is applied to the electric stay and is not an improvement of the coreless brushless motor, so that a specific structure of the coreless brushless motor is not repeated here.

Specifically, the manner of the anti-rotation fit between the outer catheter 600 and the inner catheter 700 is as follows: as shown in fig. 2 and 3, in the present embodiment, the outer catheter 600 is provided with a guide groove 620, and the inner catheter 700 is provided with a rib 7111, and the rib 7111 is slidable in the guide groove 620. Through the cooperation of the guide groove 620 and the protruding rib 7111, when the screw 230 rotates, the inner catheter 700 cannot rotate along with the screw 230 under the limit of the outer catheter 600, and only moves linearly, so that the inner catheter 700 moves telescopically. In other embodiments, the positions of the guide groove 620 and the rib 7111 may be exchanged such that the guide groove 620 is disposed on the inner catheter 700 and the rib 7111 is disposed on the outer catheter 600.

In this embodiment, as shown in fig. 4, the inner catheter 700 includes a slider 710 and a catheter body 720. The slider 710 includes a first connection section 711 and a second connection section 712 disposed in an axial direction. The outer diameter of the first connection section 711 is larger than the outer diameter of the first connection section 711. The ribs 7111 are circumferentially arranged on the first connecting section 711 at intervals; the second connecting section 712 is provided with a connecting projection 7121. The catheter body 720 is sleeved on the second connecting section 712, and the catheter body 720 is provided with a connecting hole 721 matched with the connecting protrusion 7121. The above design allows the catheter body 720 to be attached to the inner wall of the outer catheter 600, so that the linear movement accuracy of the catheter body 720 is high, and no deviation occurs.

With continued reference to fig. 1, in this embodiment, the electric brace further includes a reduction gearbox 220, and the motor 210 is connected to the screw 230 through the reduction gearbox 220. The motor 210 reduces the speed and increases the torque through the reduction gearbox 220, and then transmits power to the screw 230.

Further, as shown in fig. 1 and 5, the electric stay further includes a protective sheath 400 and a compression spring 500. The outer sleeve 100, the protective sleeve 400, the compression spring 500, the outer catheter 600 and the inner catheter 700 are sequentially arranged from outside to inside. Referring to fig. 6, a baffle 110 is disposed on the inner wall of the outer sleeve 100. Referring to fig. 7, the protective sheath 400 includes a sleeve body 410 coaxially disposed with the outer catheter 600 and a shielding portion 420 disposed at one end of the sleeve body 410. The shielding part 420 is provided therein with a receiving groove 421 for receiving the compression spring 500. One end of the compression spring 500 abuts against the blocking table 110, and the other end abuts against the accommodating groove 421. As shown in fig. 5, the second connector 900 is provided to protrude from the inner pipe 700 in the radial direction of the inner pipe 700, and the shielding portion 420 abuts against a portion of the second connector 900 protruding from the inner pipe 700. In other embodiments, the shielding part 420 may be fixedly connected to the inner catheter 700.

In the process of closing the automobile tail door to opening, the inner guide pipe 700 and the second connector 900 extend, the pressure spring 500 pushes the protective sleeve 400 to extend together, the pressure spring 500 gradually extends until the tail door is opened to a preset angle, the pressure spring 500 shares the supporting force of a part of the screw rod 230 on the tail door, the screw rod 230 is protected, and the service life of the electric stay bar is prolonged. In the process of opening and closing the automobile tail door, the inner conduit 700 and the second connector 900 retract, and the second connector 900 drives the protective sleeve 400 and the pressure spring 500 to retract together. The compression spring 500 plays an auxiliary role in opening and closing the door and hovering. The protective sleeve 400 is used for providing guiding for the compression spring 500 to stretch and retract on the one hand and shielding the compression spring 500 to prevent the compression spring 500 from being exposed on the other hand. In addition, the upper baffle 110 of the outer sleeve 100 is configured to provide a supporting position for the compression spring 500, so as to prevent the compression spring 500 from directly contacting with the components such as the motor 210 or the reduction gearbox 220, and protect the components such as the motor 210 or the reduction gearbox 220.

In this embodiment, a lubrication coating (not shown in the drawing) is disposed on the inner wall of the protective sleeve 400, and the lubrication coating may be a teflon coating, which plays a role in lubrication and wear resistance, and can effectively reduce the sound generated by friction between the compression spring 500 and the protective sleeve 400.

Further, as shown in fig. 1, the electric stay further includes a damper 240 disposed in the outer sleeve 100, the damper 240 is disposed between the reduction gearbox 220 and the outer catheter 600, and the damper 240 is sleeved on the screw 230. The damper 240 is used to provide a damping force so that the electric strut has sufficient static holding force so that the tailgate has a better hover effect.

Referring to fig. 8, the electric stay further includes an adapter 300 disposed in the outer sleeve 100, and the adapter 300 is used for fixing the damper 240 to the outer sleeve 100. Specifically, the adaptor 300 is fixed to the inner wall of the outer sleeve 100, and the damper 240 is fixed inside the adaptor 300. A buffer member 330 is disposed between the adapter 300 and the damper 240, and the buffer member 330 may be a rubber buffer member 330. The buffer piece 330 is used for buffering the damper 240, so that the damper 240 can be automatically adjusted, and the damper 240 and the screw 230 can be concentric.

Specifically, as shown in fig. 9, the adapter 300 includes a first adapter 310 and a second adapter 320 disposed along an axial direction of the screw 230. A first coaming 311 is disposed at an end of the first adapter 310 away from the second adapter 320; the second adapting member 320 is provided with a second enclosing plate 321 at an end thereof remote from the first adapting member 310. The damper 240 is provided between the first shroud 311 and the second shroud 321. Adapter 300 is split into two parts to facilitate damper 240 installation and bumper 330 installation.

The anti-rotation fit between the first adapter 310 and the second adapter 320 is used to prevent assembly misalignment between the first adapter 310 and the second adapter 320, resulting in assembly errors. Specifically, as shown in fig. 10, the first adapter 310 and the second adapter 320 are engaged with the grooves through the boss to realize rotation stopping, and meanwhile, the assembly between the first adapter 310 and the second controller is convenient. It should be noted that, in other embodiments, the first adapter 310 and the second adapter 320 may also use other anti-rotation fit prevention, such as bolting, riveting, bolting, etc.

Further, as shown in fig. 8, the electric stay further includes a bearing 250, the bearing 250 is disposed between the adapter 300 and the outer catheter 600, and the bearing 250 is sleeved on the screw 230. The bearing 250 is provided to ensure smooth rotation of the screw 230.

In this embodiment, as shown in fig. 9, the second shroud 321 is provided with a slot 3211 for accommodating the bearing 250. The bearing 250 is disposed in the slot 3211 and is in interference fit with the second shroud 321, thereby eliminating concentricity errors caused by a fit gap. "concentricity" refers to the degree of deviation of the center of the cross section between the components. In addition, as shown in fig. 9 and 10, the first enclosing plate 311 is also in anti-rotation engagement with the reduction gearbox 220, so as to achieve the effect of connection and anti-rotation between the reduction gearbox 220 and the adapter 300. The anti-rotation fit can also adopt a fit mode of the groove and the boss, or other fit modes according to actual needs. In summary, the adapter 300 is used for mounting both the damper 240 and the bearing 250 due to the connection of the reduction gearbox 220.

Further, as shown in fig. 8 and 11, the electric stay further includes a waterproof glue 260, and the waterproof glue 260 is sleeved on the screw 230 and is located between the bearing 250 and the outer catheter 600. One end of the outer catheter 600, which is close to the bearing 250, is connected with a fixing seat 610, and the fixing seat 610 is fixed on the inner wall of the outer sleeve 100. The waterproof glue 260 is provided with two first waterproof protrusions 261 contacting the screw 230 (preferably, the shaft sleeve of the screw 230) and one second waterproof protrusion 262 contacting the fixing base 610. The waterproof glue 260 is used for realizing the sealing performance of the bearing 250, the damper 240 and the motor 210 and other components inside the bearing 250, and realizing the waterproof. Meanwhile, two first waterproof protrusions 261 are arranged on the waterproof glue 260 and used for ensuring the tightness between the waterproof glue 260 and the movable screw rod 230, and one second waterproof protrusion 262 is used for reducing the manufacturing difficulty of the waterproof glue 260 while ensuring the tightness between the waterproof glue and the fixed seat 610. It should be noted that, in other embodiments, the number of the first waterproof protrusions 261 and the second waterproof protrusions 262 may be set to other numbers according to actual needs.

In addition, as shown in fig. 12, in the present embodiment, the first joint 800 is an integrated first ball socket for connecting with a universal head of a vehicle body. The first socket seals the bottom end of the outer sleeve 100, protecting other internal components such as the motor 210. Meanwhile, the first connector 800 is an integrally formed piece, and has a simple structure and high strength, and is easy to assemble to the outer sleeve 100. As shown in fig. 13, the second connector 900 includes a fixed head 910 connected to the inner pipe 700 and a second ball socket 920 connected to the fixed head 910, and the second ball socket 920 is used for connecting with a universal head of a trunk door. Specifically, one end of the fixing head 910 is inserted into the inner catheter 700 and connected to the inner catheter 700, and the other end of the fixing head 910 is inserted into the second ball socket 920 and connected to the second ball socket 920. The fixed head 910 is further provided with a baffle plate 911, and the shielding part 420 of the protective sleeve 400 abuts against the baffle plate 911. The second connector 900 is designed to be a split piece, so that the second connector 900 is convenient to process and manufacture.

In addition, the outer sleeve 100 is an integrated sleeve, so that the number of parts is reduced, the components such as the motor 210, the outer guide tube 600, the inner guide tube 700, the screw 230 and the like are integrally assembled into the integrated outer sleeve 100, assembly errors are avoided, concentricity errors are eliminated, and the screw 230 operates more smoothly. Wherein, the first connector 800, the motor 210, the adapter 300, the outer catheter 600, etc. may be welded to the outer sleeve 100. Specifically, a laser welding process can be adopted, compared with the existing pressure point mode, interference fit is adopted for the laser welding part, concentricity errors are eliminated, and the waterproof performance is better.

The foregoing examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.

Claims

1. The utility model provides an electronic vaulting pole, its characterized in that includes outer tube, outer pipe, interior pipe, attenuator, adapter, motor, lead screw, first connector and second connector, the motor with outer pipe is followed the axial of outer tube is located in the outer tube, the motor with the lead screw is connected, interior pipe with lead screw threaded fit, interior pipe is in the direction of outer pipe is removed down, just it is fixed in the rotation-stopping fit between the interior pipe with the outer pipe, first connector with the second connector is located respectively the both ends of outer tube, just first connector is fixed in the tip of outer tube, the second connector is fixed in the tip of interior pipe, the motor is the hollow cup brushless motor, the adapter with the attenuator is all located in the outer tube, the attenuator is located between the motor with the outer pipe, just the attenuator cover is located on the lead screw, the adapter is fixed in on the inner wall of outer tube, the adapter is fixed in the adapter is equipped with the attenuator between the adapter and the attenuator is equipped with the attenuator.

2. The electric stay bar according to claim 1, further comprising a protective sleeve and a pressure spring, wherein the outer sleeve, the protective sleeve, the pressure spring and the outer catheter are sequentially arranged from outside to inside, a baffle is arranged on the inner wall of the outer sleeve, the protective sleeve comprises a sleeve body coaxially arranged with the outer catheter and a shielding part arranged at one end of the sleeve body, the shielding part is provided with a containing groove for containing the pressure spring, one end of the pressure spring abuts against the baffle, the other end abuts against the inside of the containing groove, and the shielding part abuts against the second connector.

3. The motorized strut as recited in claim 2, wherein the inner wall of the protective sheath is provided with a lubricious coating.

4. The electric brace of claim 1, wherein the adapter comprises a first adapter member and a second adapter member disposed along an axial direction of the screw rod, wherein a first shroud is disposed at an end of the first adapter member remote from the second adapter member, a second shroud is disposed at an end of the second adapter member remote from the first adapter member, a spin-stop fit is provided between the first adapter member and the second adapter member, and the damper is disposed between the first shroud and the second shroud.

5. The motorized strut as recited in claim 4, further comprising a bearing disposed between the adapter and the outer conduit, the second shroud having a slot for receiving the bearing, the bearing disposed in the slot and in interference fit with the second shroud, the bearing being disposed over the lead screw.

6. The electric stay bar according to claim 5, further comprising a waterproof glue, wherein the waterproof glue is sleeved on the screw rod and is located between the bearing and the outer guide tube, one end of the outer guide tube, which is close to the bearing, is connected with a fixing seat, the fixing seat is fixed on the inner wall of the outer sleeve, and the waterproof glue is provided with two first waterproof protrusions in contact with the screw rod and one second waterproof protrusion in contact with the fixing seat.

7. The motorized strut of claim 1, wherein the first connector is an integrated first ball socket.

8. The motorized strut of claim 1, wherein the second connector comprises a fixed head connected to the inner conduit and a second ball socket connected to the fixed head.

9. The motorized strut of claim 1, wherein the outer sleeve is an integrated sleeve.

10. The electric brace of claim 1, further comprising a reduction gearbox disposed within the outer sleeve, wherein the motor is coupled to the lead screw via the reduction gearbox.