CN211715695U

CN211715695U - Straight cylinder push rod

Info

Publication number: CN211715695U
Application number: CN201922357791.4U
Authority: CN
Inventors: 叶龙
Original assignee: Ningbo Haishikai Drive Technology Co ltd
Current assignee: Ningbo Haishikai Drive Technology Co ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-10-20
Anticipated expiration: 2029-12-25

Abstract

The utility model provides a straight cylinder push rod, which comprises an outer cylinder body, an inner cylinder body sleeved at the inner side of the outer cylinder body, a screw rod and a motor component positioned in the outer cylinder body, wherein one end of the screw rod is positioned in the inner cylinder body, the other end is fixed at the output end of the motor component, one side of the inner cylinder body close to the motor component is fixed with a nut, the nut is in transmission fit with the screw rod thread, the screw rod synchronously rotates along with the output shaft of the motor component, so that the nut moves along the axial direction of the screw rod, and further the nut drives the inner cylinder body to move along the axial direction of the outer cylinder body to realize extension and retraction, a middle cylinder body is arranged between the outer cylinder body and the inner cylinder body, the nut is positioned in the middle cylinder body and is movably matched with the middle cylinder body, when the nut moves along the axial direction of the screw rod, the middle cylinder body can ensure, noise that the reduction transmission arouses promotes user experience.

Description

Straight cylinder push rod

Technical Field

The utility model relates to an electric putter technical field especially relates to a straight section of thick bamboo push rod.

Background

The straight section of thick bamboo push rod changes the rotary motion of motor into the straight reciprocating motion of push rod, realize remote control, generally be provided with outer barrel and interior barrel in the straight section of thick bamboo push rod of current, the flexible of barrel and outer barrel in the internal lead screw of inner tube and the cooperation realization of nut screw thread transmission, the surface of nut and the cooperation of outer barrel make can steadily transmit between nut and the lead screw, the noise that nut and lead screw transmission produced this moment spreads through outer barrel, the noise is great, influence user experience.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a straight section of thick bamboo push rod of low noise.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a straight section of thick bamboo push rod, including outer barrel, the suit is in the inboard interior barrel of outer barrel, the lead screw with be located the internal motor element of urceolus, the one end of lead screw is located the inner tube internally, the other end is fixed in motor element's output, one side that interior barrel is close to motor element is fixed with the nut, nut and lead screw thread drive fit, the lead screw is along motor element's output shaft synchronous revolution, make the nut along the axial displacement of lead screw, and then the nut drives interior barrel and realizes stretching out and drawing back along outer barrel axial displacement, be equipped with well barrel between outer barrel and the interior barrel, the nut is located in the barrel and movably and well barrel cooperation.

Further, a gap exists between the middle cylinder and the outer cylinder.

Furthermore, the gap between the middle cylinder and the outer cylinder is A, and A is more than or equal to 0.2mm and less than or equal to 2 mm.

Further, the nut includes linkage segment and cooperation section, the outer wall and the interior barrel fixed connection of linkage segment, but the outer wall and the well barrel movable fit of cooperation section.

Furthermore, the tip of outer barrel is equipped with the end cover, is equipped with on the end cover with well barrel complex first location section, the one end that well barrel is close to motor element is equipped with the position sleeve, be equipped with on the position sleeve with well barrel complex second location section, the radial position of barrel in first location section and the cooperation restriction of second location section.

Furthermore, the center of end cover is equipped with the through-hole, and the movably and through-hole cooperation of interior barrel is equipped with the sealing member on the inner wall of through-hole.

Further, the one end that the nut is close to the end cover is equipped with first blotter, and the one end that is close to the position sleeve is equipped with the second blotter, and when interior barrel and outer barrel were in the ultimate stretching state, the nut leaned on through first blotter and end cover, and when interior barrel and outer barrel were in the ultimate contraction state, the nut leaned on through second blotter and position sleeve.

Further, still be equipped with bearing and bearing fixing base in the urceolus body, lead screw and motor element complex one end are located to the bearing housing, and the bearing fixing base is fixed in on the motor element.

Furthermore, the outer wall of the bearing fixing seat is sleeved with a damping sleeve, and the bearing fixing seat is matched with the inner wall of the outer barrel through the damping sleeve.

Further, the motor assembly comprises a motor and a reduction worm gear.

After the technical scheme is adopted, the utility model has the advantages of as follows:

1. through setting up well barrel, the nut is located well barrel and movably and well barrel cooperation, and when the nut was along the axial displacement of lead screw, well barrel can guarantee that the transmission is more steady between nut and the lead screw, and the noise that the transmission produced between nut and the lead screw passes through well barrel and transmits for outer barrel again simultaneously, and well barrel plays noise proof effect, can reduce the noise that the transmission arouses, promotes user experience.

2. Through set up the clearance between well barrel and outer barrel for there is the space between well barrel and the outer barrel, the nut transmits the outer barrel for after through well barrel and clearance with the noise that the screw drive caused, has further promoted noise reduction effect.

3. Through with the unilateral clearance setting between well barrel and the outer barrel between 0.2mm to 2mm for there is the space between well barrel and the outer barrel, play syllable-dividing effect, the clearance between well barrel and the outer barrel can not the size of the straight section of thick bamboo push rod of too big influence simultaneously. When A is less than 0.2mm, the gap between the middle cylinder and the outer cylinder is too small, and the sound insulation effect cannot be well achieved; when A is larger than 2mm, the clearance between the middle cylinder body and the outer cylinder body is too large, so that the outer diameter of the outer cylinder body is larger, and the volume of the straight cylinder push rod is increased.

4. Through set up first location section, location and sheathe in and set up the second location section on the end cover, the radial position of barrel in first location section and the cooperation restriction of second location section to guarantee that the nut is movably to cooperate with well barrel.

5. Through set up the sealing member on the inner wall at the through-hole, prevent that steam from getting into between outer barrel and the interior barrel, cause the influence to parts such as screw.

6. By arranging the first cushion pad and the second cushion pad, when the inner cylinder body and the outer cylinder body are in a limit stretching state, the nut is abutted against the end cover through the first cushion pad, and noise generated by collision of the nut and the end cover is buffered; when the inner cylinder body and the outer cylinder body are in the extreme contraction state, the nut is abutted against the positioning sleeve through the second cushion pad, and the noise generated by the collision of the nut and the positioning sleeve is buffered.

7. Through setting up bearing and bearing fixing base, lead screw and motor element complex one end are located to the bearing housing, play the effect of support to the lead screw, reduce the frictional force that the lead screw received at the rotation in-process to guarantee the gyration precision of lead screw, the bearing fixing base is fixed on motor element, makes the rigidity of bearing fixing base, reduces the collision between bearing fixing base and the outer barrel, and then reduces the noise of production.

8. The damping sleeve is sleeved on the outer wall of the bearing fixing seat, the bearing fixing seat is matched with the inner wall of the outer barrel through the damping sleeve, the damping sleeve plays a role in vibration isolation, and noise generated when the bearing fixing seat collides with the outer barrel is further reduced.

Drawings

The present invention will be further explained with reference to the accompanying drawings:

fig. 1 is a cross-sectional view of the straight push rod of the present invention.

Fig. 2 is an enlarged view at B in fig. 1.

The names of the components marked in the figures are as follows:

100. an outer cylinder; 200. an inner cylinder; 300. a screw rod; 400. a motor assembly; 500. a nut; 510. a connecting section; 520. a mating segment; 530. a first cushion pad; 540. a second cushion pad; 600. a middle cylinder body; 700. an end cap; 710. a first positioning section; 720. oil sealing; 730. an O-shaped ring; 800. a positioning sleeve; 810. a second positioning section; 900. a bearing seat; 910. a bearing; 920. shock attenuation cover.

Detailed Description

The invention will be further explained with reference to the drawings and the specific embodiments. It is to be understood that the following terms "upper," "lower," "left," "right," "longitudinal," "lateral," "inner," "outer," "vertical," "horizontal," "top," "bottom," and the like are used in an orientation or positional relationship relative to one another only as illustrated in the accompanying drawings and are used merely for convenience in describing and simplifying the invention, and do not indicate or imply that the device/component so referred to must have a particular orientation or be constructed and operated in a particular orientation and therefore should not be considered as limiting the invention.

As shown in fig. 1 and 2, the present invention provides a straight barrel push rod, which comprises an outer barrel 100, an inner barrel 200 sleeved inside the outer barrel 100, a lead screw 300 and a motor assembly 400 located inside the outer barrel 100, wherein one end of the lead screw 300 is located inside the inner barrel 200, the other end is fixed at the output end of the motor assembly 400, a nut 500 is fixed at one side of the inner barrel 200 close to the motor assembly 400, the nut 500 is in threaded transmission fit with the lead screw 300, during operation, the lead screw 300 rotates synchronously with the output shaft of the motor assembly 400, so that the nut 500 moves axially along the lead screw 300, and further the nut 500 drives the inner barrel 200 to move axially along the outer barrel 100 to achieve extension and retraction, a middle barrel 600 is arranged between the outer barrel 100 and the inner barrel 200, the nut 500 is located inside the middle barrel 600 and movably fits with the middle barrel 600, when the nut 500 moves axially along the lead screw 300, the middle barrel 600 can ensure that the transmission between the nut, meanwhile, noise generated by transmission between the nut 500 and the screw rod 300 is transmitted to the outer cylinder 100 through the middle cylinder 600, the middle cylinder plays a role in sound insulation, noise caused by transmission can be reduced, and user experience is improved.

Specifically, the nut 500 includes a connection section 510 and a matching section 520, the outer wall of the connection section 510 is fixedly connected with the inner cylinder 200, so that the nut 500 can drive the inner cylinder 200 to move along the axial direction of the outer cylinder 100, and the outer wall of the matching section 520 is matched with the middle cylinder 600 and can move along the middle cylinder 600.

In this embodiment, there is the clearance between well barrel 600 and the outer barrel 100 for there is the space between well barrel 600 and the outer barrel 100, and the noise that nut 500 and lead screw 300 transmission caused transmits for outer barrel after through well barrel and clearance, has further promoted the noise reduction effect.

The clearance between well barrel 600 and outer barrel 100 is A, and 0.2mm is less than or equal to A and is less than or equal to 2mm for through setting up the unilateral clearance between well barrel and the outer barrel between 0.2mm to 2mm for there is the space between well barrel and the outer barrel, plays syllable-dividing effect, and the clearance between well barrel and the outer barrel can not too big influence the size of straight section of thick bamboo push rod simultaneously. In this embodiment, A takes 0.5mm, can play better syllable-dividing effect, can not too greatly increase the external diameter of outer barrel simultaneously.

The end of outer barrel 100 is equipped with end cover 700, is equipped with the first location section 710 with well barrel 600 complex on the end cover 700, and the one end that well barrel 600 is close to motor element 400 is equipped with position sleeve 800, is equipped with the second location section 810 with well barrel 600 complex on the position sleeve 800, and barrel 600's radial position in the cooperation restriction of first location section 710 and second location section 810 to guarantee that the nut is movably to cooperate with well barrel.

The center of end cover 700 is equipped with the through-hole, and the movably and through-hole cooperation of interior barrel 200 is equipped with the sealing member on the inner wall of through-hole, prevents that steam from getting into between outer barrel and the interior barrel, causes the influence to parts such as screw. The sealing member comprises an oil seal 720 and two O-shaped rings 730, in the embodiment, the number of the oil seals 720 is one, the number of the O-shaped rings 730 is two, and the oil seals 720 are arranged on the outer sides of the two O-shaped rings 730, so that a high-grade waterproof effect can be realized.

A first buffer pad 530 is arranged at one end of the nut 500 close to the end cover 700, a second buffer pad 540 is arranged at one end close to the positioning sleeve 800, when the inner cylinder 200 and the outer cylinder 100 are in a limit stretching state, the nut 500 is abutted against the end cover 700 through the first buffer pad 530, and noise generated by collision between the nut 500 and the end cover 700 is buffered; when the inner cylinder 200 and the outer cylinder 100 are in the extreme contraction state, the nut 500 abuts against the positioning sleeve 800 through the second buffer pad 540, and the noise generated by the collision of the nut 500 and the positioning sleeve 800 is buffered.

Still be equipped with bearing 910 and bearing fixing base 900 in the outer barrel 100, lead screw 300 and the complex one end of motor element 400 are located to the bearing 910 cover, play the effect of support to lead screw 300, reduce the frictional force that the lead screw received at the rotation in-process, and guarantee the gyration precision of lead screw, bearing fixing base 900 is fixed in on the motor element 400, make the rigidity of bearing fixing base, reduce the collision between bearing fixing base and the outer barrel, and then reduce the noise that produces. Specifically, the bearing fixing seat is fixed on the motor assembly through a screw, and is relatively reliable in fixing and convenient to disassemble and assemble due to self-locking of threads.

The cover is equipped with damping sleeve 920 on the outer wall of bearing fixing base 900, and bearing fixing base 900 passes through damping sleeve 920 and the inner wall cooperation of outer barrel 100, and damping sleeve 920 plays the effect of vibration isolation, further reduces the noise that bearing fixing base and outer barrel collision produced. Specifically, the shock-absorbing sleeve 920 is a POM plastic sleeve.

Specifically, the motor assembly 400 includes a motor and a reduction worm gear, and the reduction worm gear reduces the rotation speed of the motor shaft and transmits the reduced rotation speed to the lead screw, so as to meet the use requirement.

It is understood that A may also take the form of 0.2mm, 0.4mm, 0.6mm, 1mm, 1.5mm, 2mm, etc.

It will be appreciated that the seal may be a single or multiple O-rings.

It will be appreciated that the seal may be a single or multiple oil seals.

In addition to the preferred embodiments described above, other embodiments of the present invention are also possible, and those skilled in the art can make various changes and modifications according to the present invention without departing from the spirit of the present invention, which should fall within the scope of the present invention defined by the appended claims.

Claims

1. The utility model provides a straight section of thick bamboo push rod, includes outer barrel, suit in the inboard interior barrel of outer barrel, lead screw and be located the internal motor element of urceolus, the one end of lead screw is located the inner tube internally, the other end is fixed in motor element's output, one side that interior barrel is close to motor element is fixed with the nut, nut and lead screw thread drive fit, the lead screw is synchronous revolution along motor element's output shaft for the nut is along the axial displacement of lead screw, and then the nut drives interior barrel and realizes flexible along outer barrel axial displacement, a serial communication port, be equipped with well barrel between outer barrel and the interior barrel, the nut is located well barrel and movably and well barrel cooperation.

2. The straight cylinder push rod according to claim 1, characterized in that a gap exists between the middle cylinder and the outer cylinder.

3. The straight cylinder push rod as claimed in claim 2, wherein the gap between the middle cylinder and the outer cylinder is A, and A is greater than or equal to 0.2mm and less than or equal to 2 mm.

4. The straight cylinder push rod according to claim 1, wherein the nut comprises a connecting section and a matching section, the outer wall of the connecting section is fixedly connected with the inner cylinder body, and the outer wall of the matching section is movably matched with the middle cylinder body.

5. The straight cylinder push rod according to claim 1, wherein the end of the outer cylinder is provided with an end cover, the end cover is provided with a first positioning section matched with the middle cylinder, one end of the middle cylinder close to the motor assembly is provided with a positioning sleeve, the positioning sleeve is provided with a second positioning section matched with the middle cylinder, and the first positioning section and the second positioning section are matched to limit the radial position of the middle cylinder.

6. The straight cylinder push rod according to claim 5, wherein the end cap is provided with a through hole at the center, the inner cylinder is movably matched with the through hole, and the inner wall of the through hole is provided with a sealing element.

7. The straight tube push rod of claim 5, wherein one end of the nut close to the end cover is provided with a first buffer cushion, one end close to the positioning sleeve is provided with a second buffer cushion, when the inner tube body and the outer tube body are in an extreme stretching state, the nut is abutted against the end cover through the first buffer cushion, and when the inner tube body and the outer tube body are in an extreme contraction state, the nut is abutted against the positioning sleeve through the second buffer cushion.

8. The straight cylinder push rod according to claim 1, characterized in that a bearing and a bearing fixing seat are further arranged in the outer cylinder, the bearing is sleeved at one end of the screw rod matched with the motor component, and the bearing fixing seat is fixed on the motor component.

9. The straight cylinder push rod according to claim 8, characterized in that the outer wall of the bearing fixing seat is sleeved with a damping sleeve, and the bearing fixing seat is matched with the inner wall of the outer cylinder body through the damping sleeve.

10. The straight drum push rod according to any one of claims 1 to 9, wherein the motor assembly comprises a motor and a reduction worm gear.