CN206142726U - Driver - Google Patents

Abstract

The utility model discloses a driver, which solves the technical problems of large installation distance and small stroke of the driver in the existing elevator. The solution to the technical problem mainly includes a gear box, a transmission assembly arranged in the gear box, The first transmission nut that is in transmission cooperation with the transmission assembly, the first screw rod that is threadedly engaged with the first drive nut, the second screw rod that is sleeved outside the first screw rod and has an opposite direction of rotation to the first screw rod, and The second drive nut threadedly engaged with the second screw rod and the connecting piece whose bottom end is fixedly connected to the first drive nut and whose top end is fixedly connected to the second drive nut. The utility model is mainly applicable to lifters and lifting columns in the fields of kitchen and bathroom, office and the like.

Description

a drive

technical field

The utility model belongs to the technical field of lifting devices and relates to a driver.

Background technique

As a lifting device, the lifter is widely used in kitchen, bathroom, office and other fields. The lifter in the prior art uses a driving motor to drive the driver to realize the lifting of the lifting device. The driver in the lifter in the prior art usually adopts the traditional The screw mechanism has the problems of large installation distance and small stroke.

Utility model content

The purpose of the utility model is to provide a driver to solve the technical problems of large installation distance and small stroke of the driver in the existing lifter.

In order to achieve the above purpose, the utility model adopts the following technical solutions: a driver, including a gear box, a transmission assembly arranged in the gear box, a first transmission nut that is matched with the transmission assembly, and a second transmission nut that is threaded with the first transmission nut. A threaded rod, a second threaded rod sheathed on the outside of the first threaded rod and opposite to the direction of the first threaded rod, a second drive nut threaded with the second threaded rod, and the bottom end is fixedly connected to the first drive nut 1. The top end is fixedly connected to the connecting piece of the second driving nut.

Further, the transmission assembly includes a worm gear installed in the gearbox and a worm meshed with the worm gear for transmission.

Further, the worm wheel has a coaxially arranged bearing position and an inner hole passing through the worm wheel along the axis of the worm wheel, and a bearing cooperating with the bearing position is installed in the gearbox, and the first drive nut has a coaxially arranged and A fixed shaft for a fixed fit with the bore.

Further, the transmission assembly further includes a transmission gear set, the input end of the transmission gear set is coaxially transmitted with the worm gear, and the output end of the transmission gear set is coaxially transmitted with the first transmission nut.

Further, the transmission gear set includes a bevel gear coaxially transmitted with the worm gear and a bevel gear coaxially transmitted with the first drive nut; or, the transmission gear set includes a first helical gear coaxially transmitted with the worm gear and a bevel gear coaxially transmitted with the worm gear. The second helical gear coaxially driven by the first drive nut.

Further, the bottom of the first transmission nut is provided with a first external thread, the top of the second transmission nut is provided with a second external thread, the top and bottom of the connecting piece are provided with screw holes, and the connection The screw hole at the top of the connecting piece is fixedly connected with the first external thread through threaded connection, and the screw hole at the bottom of the connecting piece is fixedly connected with the second external thread through threaded connection.

Further, the head end of the first screw rod is provided with a first flange, and the head end of the second screw rod is provided with a second flange.

After adopting the technical scheme, the utility model has the following advantages:

In the driver of the present invention, the first screw rod and the second screw rod are nested together. When the transmission assembly drives the first drive nut to rotate, the second drive nut rotates synchronously with the first drive nut through the connecting piece, so that the first drive nut rotates synchronously with the first drive nut. The screw rod and the second screw rod can be separated in reverse or the first screw rod can be inserted into the second screw rod. When the first screw rod and the second screw rod are separated in reverse, the first screw rod will extend out of the second screw rod. The height that the lifter can rise is increased, and when the first screw rod can be extended into the second screw rod, the lifter can be shrunk to the minimum, which reduces the installation distance of the driver, and is convenient for storage by using the lifter of the driver.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described:

Fig. 1 is the schematic diagram of the three-dimensional structure of the lifter in Embodiment 1 of the utility model;

Figure 2 is an exploded view of the lifter in Embodiment 1 of the utility model;

Fig. 3 is an exploded view of the driving device in Embodiment 1 of the utility model;

Fig. 4 is an exploded view of the guide column in the first embodiment of the utility model;

Fig. 5 is an exploded view of the driver in the second embodiment of the present invention.

detailed description

Embodiment one:

As shown in Figures 1 to 3, the utility model provides a lifter, including a first mounting plate 1, a second mounting plate 2, a third mounting plate located between the first mounting plate 1 and the second mounting plate 2 3 and a driving device that can drive the second mounting plate 2 and the third mounting plate 3 to lift, the driving device includes a driving motor 4 with output shafts 41 at both ends and two drivers 5, each output shaft 41 of the driving motor 4 is Cooperate with a driving motor 5 in transmission, the driver 5 includes a gear box 51 installed on the third mounting plate 3, a worm gear 52 arranged in the gear box 51, an output shaft 41 connected to the driving motor 4 and extending into the gear box 51 and The worm 53 that is engaged with the worm gear 52, the first drive nut 54 connected with the worm gear 52, the first screw rod 55 threaded with the first drive nut 54, is sleeved on the outside of the first screw rod 55 and connected with the first screw rod 55. The second screw mandrel 56 whose screw thread turns in the opposite direction, the second drive nut 57 threadedly matched with the second screw mandrel 56 and the connecting piece 58 whose bottom end is fixedly connected to the first drive nut 54 and whose top end is fixedly connected to the second drive nut 57, The worm wheel 52 is sleeved on the outside of the first drive nut 54 and arranged coaxially. The two can be formed as a whole through integral processing, or can be connected together by assembly. The first drive nut 54 rotates synchronously with the worm wheel 52, and the first screw rod The top of 55 passes through the housing of gear box 51 and the third mounting plate 3 is fixedly connected with the first mounting plate 1, and the bottom end of the second screw mandrel 56 is fixedly connected with the second mounting plate 2, because the driving motor 4 and the gear box 51 is installed on the third mounting plate 3, the stroke of the third mounting plate 3 partially overlaps with the installation position of the drive motor 4 and the gear box 51, thus reducing the axial installation size of the lifter, compared to the drive motor 4 and the gear box 51. Gear box 51 is installed on the installation mode on the second mounting plate 2, and the installation distance of lifter has been reduced, and first screw mandrel 55 is solid screw mandrel, and second screw mandrel 56 is hollow screw mandrel, and first screw mandrel 55 The bottom end can stretch into or stretch out the inner hole of the second screw mandrel 56, and the first screw mandrel 55 and the second screw mandrel 56 are nested together by the first screw mandrel 55. When the driving device rises and stretches out, the first screw mandrel 55 and the second screw mandrel The two screw rods 56 are reversely separated, which increases the liftable height, and when the driving device descends and shrinks, the second screw rod 56 can be nested in the first screw rod 55, so that the lifter can shrink to the minimum. The installation distance is further reduced, and it is convenient for the storage of the lifter, and the use of two sets of drivers 5 can make the lifter run more smoothly during the lifting process, and the two sets of drivers only need to be carried out by a drive motor with two output shafts. drive, reducing the size of the drive device, easy installation, and lower cost.

The working process of the driving device is as follows: the output shaft 41 of the driving motor 4 drives the worm 53 to rotate, and the worm 53 drives the worm wheel 52 to rotate, so that the first transmission nut 54 rotates coaxially with the worm wheel 52, and the second transmission nut 57 passes through the transmission of the connecting piece 58. The function rotates synchronously with the first drive nut 54, because the top of the first screw rod 55 is fixedly connected with the first mounting plate 1, and the bottom end of the second screw rod 56 is fixedly connected with the second mounting plate 2, therefore, the first drive nut 54 and the second drive nut 57 rotate synchronously, it will drive the first screw mandrel 55 and the second screw mandrel 56 to move along their respective axial directions at the same time, and due to the thread rotation of the first screw mandrel 55 and the second screw mandrel 56 On the contrary, the moving directions of the first screw mandrel 55 and the second screw mandrel 56 will be opposite, thereby driving the first mounting plate 1 and the second mounting plate 2 to reciprocate relative to the third mounting plate at the same time, when the second mounting plate 2 When it is placed on the ground, that is to say, the second mounting plate 2 is fixed, then the movement mode of the lifter will change to the first mounting plate 1 and the third mounting plate 3 to move up and down relative to the second mounting plate 2, only It is necessary to control the forward rotation and reverse rotation of the driving motor 4 to control the lifting of the lifter.

In this embodiment, the worm wheel 52 has a coaxially arranged bearing position 521 and an inner hole passing through the worm wheel 52 along the axis of the worm wheel 52. A bearing 522 cooperating with the bearing position 521 is installed in the gear case 51. The first drive nut 54 It has a fixed shaft 541 coaxially arranged and fixedly matched with the inner hole.

In this embodiment, the gear box 51 includes a box body 511 and a box cover 512, the box body 511 is fixedly connected with the third mounting plate 3 by bolts, the casing of the box body 511 is provided with a first through hole 511a, and the drive motor 4 The output shaft 41 extends into the gear box 51 through the first through hole 511 a and engages with the worm wheel 52 for transmission.

The bottom of the first drive nut 54 is provided with a first external thread 542, and the top of the second drive nut 57 is provided with a second external thread 571. In this embodiment, the connector 58 is a tubular structure, and the top of the connector 58 and Bottoms are provided with screw holes, and the screw holes on the top of the connector 58 are fixedly connected with the first external thread 571 through threaded connection, and the screw holes at the bottom of the connector 58 are fixedly connected with the second external thread 571 through threaded connection. The first drive nut 54 and the second drive nut 57 can also be welded to make the connection more firm.

The driving motor 4 and the gear box 51 are exposed and easily contaminated with dirt and are easily damaged by accidental collisions. In order to protect the driving motor 4 and the gear box 51, a housing 6 is provided outside the driving motor 4 and the gear box 51. The housing 6 includes a first housing 61 fixedly connected to one of the gear boxes 51 and a second housing 62 fixedly connected to the other gear box 51. The first housing 61 and the second housing 62 are spliced to accommodate the drive motor 4 and the inner cavity of the gear box 51 and the second through hole 63 for the connecting piece 58 to pass through.

In order to facilitate the fixed installation of the first screw mandrel 55 and the first mounting plate 1, the first mounting plate 1 is provided with a first flange 11, the top of the first screw mandrel 55 is fixedly connected with the first flange 11, and the third installation The plate 3 is provided with a third through hole 31 for the first flange 11 to extend into. When the lifter is at the lowest position, the first flange 11 can extend into the third through hole 31, thereby eliminating the first method. The thickness of the flange 11 interferes with the lifter to the third mounting plate 3, so that the minimum height of the lifter can be made lower.

In this embodiment, the second mounting plate 2 is provided with a connecting cylinder 21. The connecting cylinder 21 includes a cylinder body 211 into which the connector 58 can penetrate and a second method for fixing the connecting cylinder body 211 to the second mounting plate 2. Lan 212, the bottom end of the second screw rod 56 is fixedly connected with the second flange 212, and the cylinder body 211 surrounds the bottom of the second screw rod 56, which can reduce dust and other dirt from being contaminated on the second screw rod 56 to a certain extent. , leading to the problem that the transmission of the second transmission nut 57 is not smooth. When the lifter is lowered, the connecting piece 58 can gradually extend into the cylinder 211, and the cylinder 211 will not interfere with the descending of the connecting piece 58.

The power line 22 is fixed on the side wall of the second mounting plate 2, and passes through the side wall of the second mounting plate 2 and is introduced between the second mounting plate 2 and the third mounting plate 3 to connect the drive motor 4. The power line 22 is located at the second mounting plate 2. The line segment between the second mounting plate 2 and the third mounting plate 3 is set according to the length of the maximum stroke of the driving motor 4 or is set as a spring power supply line, and is located between the second mounting plate 2 and the second mounting plate 2 when the lifter runs to the maximum height. The power line 22 between the three mounting plates 3 will rise with the drive motor 4, and when the lifter moves to the minimum height, the power line 22 between the second mounting plate 2 and the third mounting plate 3 will be With the lowering of the drive motor 4, it falls to the bottom of the second mounting plate 2, so the arrangement of the power cord 22 will not interfere with the stroke of the lifter.

As shown in Figure 2 and Figure 4, in order to further improve the stability of the lifter during the lifting process, at least one guide post 7 is provided between the first mounting plate 1 and the second mounting plate 2, and this embodiment adopts two guide posts 7. Column 7, two guide columns 7 are respectively distributed on both sides of the driving device, the guide column 7 includes a first guide tube 71, a second guide tube 72 and a third guide tube 73, and the outer wall of the bottom end of the first guide tube 71 is covered A first sliding sleeve 71a is provided, a second sliding sleeve 72a is sleeved on the top inner wall of the second guide tube 72, a third sliding sleeve 72b is sleeved on the bottom outer wall of the second guide tube 72, and the third guide tube 73 A fourth sliding sleeve 73a is sleeved on the inner wall of the top end, the bottom end of the first guide tube 71 is located in the second guide tube 72, the bottom end of the second guide tube 72 is located in the third guide tube 73, and the first sliding sleeve 71a And the second sliding sleeve 72a is located between the outer wall of the first guide tube 71 and the inner wall of the second guide tube 72, the third sliding sleeve 72b and the fourth sliding sleeve 73a are located between the outer wall of the second guide tube 72 and the third guide tube 73 Between the inner walls of the first guide tube 71 and the inner wall of the second guide tube 72 through the first sliding sleeve 71a and the second sliding sleeve 72a to achieve axial sliding, the outer wall of the second guide tube 72 and the third guide tube 73 The inner wall of the inner wall realizes axial sliding through the third sliding sleeve 72b and the fourth sliding sleeve 73a, so that the relative sliding of the first guide tube 71, the second guide tube 72 and the third guide tube 73 in the axial direction is smoother and more stable.

The top of the first guide tube 71 is fixedly connected with a flange 71b, the flange 71b is fixedly connected with the first mounting plate 1 by bolts, the top of the second guide tube 72 is fixedly connected with the third mounting plate 3, and the third guide tube 73 is fixedly connected with the second installation board 2 .

The second mounting plate 2 is provided with a collar 8, the collar 8 is sleeved on the outside of the third guide post 73 and has a first end 8a and a second end 8b which are not connected, and the first end 8a and the second end 8b are connected by bolts The connection tightens the collar 8 so that the collar 8 is fixedly connected with the third guide post 73, the bottom end of the third guide post 73 passes through the second mounting plate 2 and is threadedly connected with the adjustment nut 9, the third guide post 73 The cylindrical surface at the bottom is provided with an external thread 731, and the external thread 731 is connected with the internal thread of the adjusting nut 9. The bottom end of the adjusting nut 9 is used as the support part of the lifter to support the installation surface in the installation environment, and the operator rotates the adjusting nut. 9, the third guide column 73 can be moved in the axial direction to drive the lifter for fine-tuning lifting. The outer peripheral surface of the adjusting nut 9 is provided with ribs 91. When the adjusting nut 9 is manually rotated, the ribs 91 can increase the frictional force. Prevent the operator's hands from slipping.

Embodiment two:

As shown in Figure 5, the difference between this embodiment and Embodiment 1 is that the transmission assembly also includes a transmission gear set, the input end of the transmission gear set is coaxially transmitted with the worm wheel 52, and the output end of the transmission gear set is connected to the first transmission Nut 54 coaxial transmission.

In this embodiment, the transmission gear set includes a bevel gear 521 coaxially transmitted with the worm gear 52 and a bevel gear 522 coaxially transmitted with the first transmission nut 54. The transmission process is through the worm gear 52 and the worm 53 for 90° reversing transmission. Finally, the bevel gear 521 and the bevel gear 522 perform 90° reversing transmission again, so that the shaft center of the output end 41 of the drive motor 4 and the first drive nut 54 can be arranged in parallel.

Of course, the transmission gear set can also adopt other gear combination structures, as long as the structure that can realize the transmission and cooperation of the worm wheel 52 and the first transmission nut 54 can be all. And the second helical gear coaxially transmitted with the first transmission nut 54, the staggered transmission of the first helical gear and the second helical gear can also realize 90° reversing transmission.

In this embodiment, the head end of the second threaded rod 56 is still fixedly connected to the second flange 212 , but the barrel in the first embodiment is not required.

In addition to the above-mentioned preferred embodiment, the utility model also has other embodiments, and those skilled in the art can make various changes and deformations according to the utility model, as long as they do not depart from the spirit of the utility model, all should belong to the claims of the utility model The range defined in .

Claims (7)

1. a kind of driver, it is characterised in that pass including gear-box, the transmission component being arranged in gear-box and transmission component The first screw mandrel that dynamic the first transmission nut for coordinating and the first transmission nut screw thread coordinate, be sheathed on the first screw mandrel outside and with The second transmission nut and bottom that the second contrary screw mandrel of the thread rotary orientation of the first screw mandrel and the second wire rod thread coordinate is fixed Connect the connector that the first transmission nut, top are fixedly connected the second transmission nut.

2. a kind of driver according to claim 1, it is characterised in that the transmission component includes being arranged in gear-box Worm gear and the worm screw with worm gear engaged transmission.

3. a kind of driver according to claim 2, it is characterised in that the worm gear have the bearing position that is coaxially disposed and Along the endoporus of the axle center insertion worm gear of worm gear, the bearing coordinated with bearing position, first transmission are installed in the gear-box Nut have be coaxially disposed and with the fixing axle of endoporus secure fit.

4. a kind of driver according to claim 2, it is characterised in that the transmission component also includes driving gear set, The input of the driving gear set and worm gear coaxial transmission, the outfan of the driving gear set is coaxial with the first transmission nut Transmission.

5. a kind of driver according to claim 1, it is characterised in that the driving gear set includes coaxially being passed with worm gear Dynamic bevel gear and the bevel gear with the first transmission nut coaxial transmission；Or, the driving gear set includes coaxial with worm gear First helical gear and the second helical gear with the first transmission nut coaxial transmission of transmission.

6. a kind of driver according to claim 1, it is characterised in that the bottom of first transmission nut is provided with first External screw thread, is provided with the second external screw thread at the top of second transmission nut, the top and bottom of the connector are equipped with screw, Screw at the top of the connector is threaded connection with the first external screw thread and is fixedly linked, the screw of the connector bottom and Two external screw threads are threaded connection and are fixedly linked.

7. a kind of driver according to claim 1 to 5 any one, it is characterised in that the head end of first screw mandrel First flange is provided with, the head end of second screw mandrel is provided with second flange.