CN2883302Y

CN2883302Y - Electric/manual jack

Info

Publication number: CN2883302Y
Application number: CN 200520116514
Authority: CN
Inventors: 胡国贤
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-11-18
Filing date: 2005-11-18
Publication date: 2007-03-28
Anticipated expiration: 2015-11-18

Abstract

The utility model relates to an electric and manual dual-purpose jack, comprising a bracket and a screw mandrel, the thread end of the screw mandrel is connected with the bracket via a movable nut, and the other end of the screw mandrel has a crank handle interface. The utility model is characterized in comprising a motor, a reducer, an eccentric wheel and a bracket spring, the reducer is coaxially connected with the motor, the drive gear is coaxially connected with the reducer, the drive gear is meshed with the clutch gear, the clutch gear is sleeve-jointed on the screw mandrel via a screw mandrel axle pin, a reset spring is sleeve-jointed between the clutch gear and the crank handle interface, on the other face of the clutch gear, the eccentric wheel is arranged in the housing, the crank handle is also provided, the screw mandrel spring is connected between the movable nut and the end of the screw mandrel, a bracket spring is arranged between the frame arms; no thread is arranged at the end of the screw mandrel. The utility model not only enables electric elevation of the jack, but also manual elevation, the time and labor are saved for the replacement of auto tire and maintenance.

Description

The electric-hand driven two-purpose jack

Technical field

The utility model relates to a kind of jack.

Background technology

Employed jack on the present known automobile has screw rod horizontal type jack, the vertical jack of screw rod, hydraulic jack etc.Generally comprise base, support, with support on nut ingear elevating screw, the operating handle that is connected with elevating screw etc., but when using such jack to Vehicle tyre mounting or dismounting and maintenance, its lifting all adopts hand (or hand) to finish, so it is time-consuming extremely to require great effort when changing tire and maintenance to automobile, popularizing particularly along with the small-sized household automobile, Tourism development under the situation of field and bad weather, is carried out Vehicle tyre mounting or dismounting and maintenance trouble especially.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of electronic, dual-use manual jack.

The utility model electric-hand driven two-purpose jack comprises support, screw mandrel, screw mandrel one thread end is by traveling nut and support socket, another end points of screw mandrel has the wind interface, it is characterized in that also comprising motor, retarder, eccentric wheel and support torsion spring, retarder is connected with motor coaxle, transmission gear links to each other with retarder is coaxial, transmission gear also meshes with clutch gear, clutch gear is connected on the screw mandrel by the screw axis guide, be socketed with retracing spring between clutch gear and the wind interface, at the another side of clutch gear, there is eccentric wheel to be contained in box inside, and has turning handle, screw mandrel and support socket termination do not have screw thread, between support arm, also be socketed with support torsion spring, retarder, transmission gear, clutch gear, eccentric wheel, retracing spring is installed in the casing, and the other end of support is connected with casing.

Principle of work of the present utility model is such: drive retarder when DC machine energising rotation, by transmission gear, drive clutch gear and make the positive and negative rotation of screw mandrel, realize the lifting of support.When the needs hand-operated lifting, rotate eccentric wheel clutch gear and transmission gear are broken away from, and clutch gear disengaging screw mandrel pivot pin, use the wind on the wind interface to make the positive and negative rotation of screw mandrel, can realize hand-operated lifting.It is for when jack descends that screw mandrel and support socket termination do not have screw thread, prevents that the continuous counter-rotating of motor from causing jack to damage; On the other hand, when restarting motor use jack, though this end of screw mandrel does not have screw thread, the support torsion spring is just in time given antagonistic force of screw mandrel, and screw mandrel and traveling nut are in time meshed, and jack is risen.

This electric-hand driven two-purpose jack had both been realized the electric up-down of jack, again can hand-operated lifting, save time especially when making automobile change tire and maintenance, laborsaving.

Description of drawings

Fig. 1 is the front view of the utility model embodiment one

Fig. 2 is the cutaway view of the utility model embodiment one

Fig. 3 is the cutaway view of the utility model embodiment two

Among the figure: 1, traveling nut 2, support torsion spring 3, screw mandrel 4, support 5, motor 6, retarder 7, casing 8, eccentric wheel 9, transmission gear 10, clutch gear 11, retracing spring 12-13, wind interface.

The specific embodiment

Embodiment one:

Referring to Fig. 1 and Fig. 2, the utility model electric-hand driven two-purpose jack comprises support 4, screw mandrel 3, motor 5, multistage planet retarder 6, eccentric wheel 8 and support torsion spring 2.Support 4 is four support arms symmetrical scissors supports up and down, retarder 6 and 5 coaxial connections of motor,

transmission gear

9 and 6 coaxial linking to each other of retarder, transmission gear 9 also meshes with clutch gear 10, clutch gear 10 is connected on the screw mandrel 3 by the screw axis guide, be socketed with retracing spring 11 between clutch gear 10 and the wind interface 12, another side at clutch gear 10, there is eccentric wheel 8 to be contained in casing 7 inboards, and have a turning handle, screw mandrel 3 two ends do not have screw thread, screw mandrel 3 one thread end are by traveling nut 1 two arm sockets with support 4, and between two arms socket support torsion spring 2, all there is wind interface 12 at the two ends of screw mandrel 3,13, retarder, transmission gear, clutch gear, eccentric wheel, retracing spring is installed in the casing 7, and two arms in addition of support are connected with casing 7 by active screw.

Embodiment two:

Referring to Fig. 3, the utility model electric-hand driven two-purpose jack comprises support 4, screw mandrel 3, motor 5, multistage planet retarder 6, eccentric wheel 8 and support torsion spring 2.Support 4 is the Y type support that two support arms flexibly connect, retarder 6 and 5 coaxial connections of motor,

transmission gear

9 and 6 coaxial linking to each other of retarder, transmission gear 9 also meshes with clutch gear 10, clutch gear 10 is connected on the screw mandrel 3 by the screw axis guide, be socketed with retracing spring 11 between clutch gear 10 and the wind interface 12, another side at clutch gear 10, there is eccentric wheel 8 to be contained in casing 7 inboards, and have a turning handle, screw mandrel 3 two ends do not have screw thread, screw mandrel 3 one thread end are by traveling nut 1 and support 4 one arm sockets, and there is wind interface (12) screw mandrel 3 another terminations, mounting bracket torsion spring 2 between support two arms, retarder, transmission gear, clutch gear, eccentric wheel, retracing spring is installed in the casing 7, and another arm of support is connected with casing 7 by active screw.

Claims

1, the electric-hand driven two-purpose jack, comprise support (4), screw mandrel (3), screw mandrel one thread end is by traveling nut (1) and support socket, another end points of screw mandrel has wind interface (12), it is characterized in that also comprising motor (5), retarder (6), eccentric wheel (8) and support torsion spring (2), retarder (6) and coaxial connection of motor (5), transmission gear (9) and coaxial linking to each other of retarder (6), transmission gear (9) also meshes with clutch gear (10), clutch gear (10) is connected on the screw mandrel (3) by the screw axis guide, be socketed with retracing spring (11) between clutch gear (10) and the wind interface (12), another side in clutch gear (10), there is eccentric wheel (8) to be contained in casing (7) inboard, and having turning handle, screw mandrel and support socket termination do not have screw thread, and support torsion spring (2) also is installed between support arm, retarder, transmission gear, clutch gear, eccentric wheel, retracing spring is installed in the casing (7), and the other end of support (4) is connected with casing (7).

2, electric-hand driven two-purpose jack according to claim 1, its feature are that also the two ends of screw mandrel (3) do not have screw thread, and the termination all has wind to connect (12,13).

3, electric-hand driven two-purpose jack according to claim 1, its feature is that also support (4) is four support arms symmetrical scissors supports up and down, screw mandrel (3) one thread end are by the two arm sockets of traveling nut (1) with support, and two arms in addition of support are connected with casing (7) by active screw.

4, electric-hand driven two-purpose jack according to claim 1, its feature is that also support (4) is the Y type support that two support arms flexibly connect, screw mandrel (3) one thread end are by the arm socket of traveling nut (1) with support, there is wind interface (12) another termination of screw mandrel (3), and another arm of support is connected with casing (7) by active screw.