CN202107479U

CN202107479U - Electric four-connecting-rod jack

Info

Publication number: CN202107479U
Application number: CN2011201132283U
Authority: CN
Inventors: 吴汝彪
Original assignee: ZHEJIANG HONGXIN ELECTRONICS CO Ltd
Current assignee: ZHEJIANG HONGXIN ELECTRONICS CO Ltd
Priority date: 2011-04-18
Filing date: 2011-04-18
Publication date: 2012-01-11
Anticipated expiration: 2021-04-18

Abstract

The utility model relates to an electric four-connecting-rod jack, which comprises a bracket, upper connecting rods, lower connecting rods, a base, a screw, a pin column nut and a reducer motor, wherein the upper and lower connecting rods constitute a four-connecting-rod mechanism, one end of the four-connecting-rod mechanism is hinged onto the bracket, and the other end of the four-connecting-rod mechanism is hinged onto the base; the hinging part of the upper and lower connecting rods at the right is provided with the pin column nut, and the hinging part of the upper and lower connecting rods at the left is provided with the reducer motor; one end of the screw penetrates through a shell of the reducer motor, and the screw is driven by the reducer motor to rotate; and the other end of the screw penetrates through a screw hole in the middle of the pin column nut, and when the screws rotates, the screw pulls the four-connecting-rod mechanism through the movement of the pin column nut, so that the bracket lifts. Two travel switches are arranged to cut off a power supply when the bracket lifts to a set position, so that the screw is prevented from being damaged by misoperation. A plurality of intermeshed gear teeth are arranged between the upper and lower connecting rods so as to prevent the bracket from being collapsed when the screw fails. The electric four-connecting-rod jack is a tool designed for small cars, and is simple, convenient and labor-saving to operate.

Description

The electronic jack of four connecting rods

Technical field

The present invention relates to a kind of electronic jack, specifically refer to the electronic jack of four connecting rods.

Background technology

Existing automobile-used jack is a lot, but the electronic jack in labour-saving seldom.One Chinese patent application number is 200420080126.6 " a kind of electronic jack ", has used inside and outside two cover transmissions, and middle the swivel nut 6 that possesses internal and external screw thread is simultaneously made quite complicated, and intensity also is difficult to assurance; Lack inhibiting device on the integral structure, there is hidden danger in secure context; Application number is " electronic internal tooth screw mandrel jack " complex structure of 200920304985.1, maintenance difficult, and manufacturing cost is high.The both directly heads on the strong point through screw mandrel, and during the screw mandrel wearing and tearing, replacement cost is lower than purchase cost hardly.Through in-depth study, the applicant has broken through conventional thinking, uses the diverse technical scheme of a cover to substitute, and therefore this case produces.

Summary of the invention

The object of the present invention is to provide a kind of electronic jack of four connecting rods simple in structure, easy to maintenance.

To achieve these goals, technical scheme of the present invention is following:

The electronic jack of four connecting rods comprises carriage, boxed rod, lower link, base, screw mandrel, pin nut, reducing motor; The centre one end hinge joint of described boxed rod and lower link is in the same place; The upper end hinge of boxed rod is on carriage, and the lower end of lower link links on base; Described boxed rod and lower link are divided into left and right two groups, and hinge joint place of upper right connecting rod and bottom right connecting rod is provided with the pin nut, and another hinge joint place of organizing upper left connecting rod and left lower link is provided with reducing motor; One end of screw mandrel passes the shell of reducing motor, and rotation under the gear pair of reducing motor drives, and the other end passes the screw in the middle of the pin nut, and the screw of the Acme thread of screw mandrel and pin nut is adaptive; Be provided with travel switch at left lower link medial surface, can be when upper left connecting rod down is pressed onto desired location by the button of lower stroke switch; On base, also be provided with travel switch, when lower link gave rise to desired location, the projection on the lower link can be by the button of lower stroke switch; Two place's travel switches all with between the reducing motor have circuit to be connected, and when button actions, cut off the power supply of reducing motor, and several connecting rods that prevent to link are near stretching position the time, and stroke reaches an end, and screw mandrel is also being forced rotation, and causes screw mandrel to damage.Hinge joint is provided with intermeshing several gear teeth in the top between two boxed rods on the carriage; Hinge joint also is provided with intermeshing several gear teeth in its lower end between two lower links on the base; Play the effect of gear centering block; This is in order to prevent just in case screw mandrel when losing efficacy because of wearing and tearing, the position that the self-locking action of gear can stationary links, prop up carriage can be not suddenly down slump and the thing of hurting sb.'s feelings;

Screw mandrel is provided with the square hole cylinder on that top of passing reducing motor, under the situation of power shortage, also can replace motor to come rotary screw rod with cap key.

The electronic jack of four connecting rods is that a miniature car design-calculated that aims at below 7 changes tire tool, and is easy and simple to handle, uses the 12V direct supply power taking of Cigarette lighter or automobile storage battery, laborsaving, response is fast; The present invention is simple in structure, reliable and stable, screw mandrel and the nut supporting with it provide as consumable accessory, and client oneself changes, and is easy to maintenance. ?

Description of drawings

Fig. 1 is not for drawing the block diagram of the present invention of electric machine control plate and electric wire;

Fig. 2 is the four-bar linkage structure figure that has hidden carriage and base;

Fig. 3 is the motor back view that shows the square hole cylinder;

Fig. 4 is that screw mandrel is connected scheme drawing with the pin nut.

Description of reference numerals:

1 carriage, 2 upper right connecting rods, 21 gear teeth A, 3 upper left connecting rods, 4 bottom right connecting rods, 41 gear teeth B, 5 left lower links, 6 reducing motors, 7 bases, 8 travel switches, 9 screw mandrels, 91 square hole cylinders, 10 pin nuts. ?

The specific embodiment

Through accompanying drawing and embodiment the present invention is done further to set forth in detail below.

To shown in Figure 4, the electronic jack of four connecting rods comprises carriage 1 like Fig. 1, upper right connecting rod 2, upper left connecting rod 3; Bottom right connecting rod 4, left lower link 5, reducing motor 6, base 7, travel switch 8, screw mandrel 9, pin nut 10, its working process is: jack is placed on the appropriate location under the car, on automobile cigarette lighter or automobile storage battery, connects the power supply of reducing motor 6; And 6 rotations of control reducing motor, screw mandrel 9 rotates the rotation of screw mandrel 9 synchronously under reducing motor 6 drives; Spurred pin nut 10; It is moved on screw mandrel 9, and the mobile upper right connecting rod 2 and bottom right connecting rod 4 that has spurred the right side of pin nut 10 forced the four-bar linkage action.When being rotated in the forward, the four-bar linkage lateral contraction, carriage 1 parallel slowly upwards lifting, lift automobile when playing suitable height, cut off the electricity supply, be convenient to changing of tire or carry out other operations.When operation is accomplished, then reducing motor 6 backward rotation, make screw mandrel 9 promote pin nut 10 and oppositely move, force the four-bar linkage lateral extent, carriage 1 slowly descends, and until breaking away from the automobile strong point, removes the electronic jack of four connecting rods, puts into the tool box.

Because user's attention often concentrates in the up-down of automobile, has neglected the change in location of connecting rod mechanism usually, when carriage 1 position is too high or too low; Rotation is also being forced because of the not enough screw mandrel 9 of stroke in the capital; This is can be very soon bad the engaging piece bit loss of screw mandrel 9 and pin nut 10, thus 2 travel switches 8 need be set, before carriage 1 is near end position; Four-bar linkage is just cut off the electricity supply through travel switch 8, and reducing motor 6 is in time stopped.

Gear teeth A21 and gear teeth B41 consider the set safety mechanism of safety, utilize the self-lock mechanism of gear, just in case screw mandrel 9 or pin nut 10 during because of wear out failure, can also support mutually between the connecting rod, prevent carriage 1 unexpected slump.

Just in case power supply can not the time spent, also available socket wrench puts in square hole cylinder 91, comes rotary screw rod 9 with M/C, vehicle hoisting or decline.

Claims

1. the electronic jack of four connecting rods is characterized in that: comprise carriage, boxed rod, lower link, base, screw mandrel, pin nut, reducing motor; The centre one end hinge joint of described boxed rod and lower link is in the same place, and the upper end hinge of boxed rod is on carriage, and the lower end of lower link links on base; Described boxed rod and lower link are divided into left and right two groups, and hinge joint place of upper right connecting rod and bottom right connecting rod is provided with the pin nut, and another hinge joint place of organizing upper left connecting rod and left lower link is provided with reducing motor; One end of said screw mandrel passes the shell of reducing motor, and rotation under the gear pair of reducing motor drives, and the other end passes the screw in the middle of the pin nut, and the screw of the Acme thread of screw mandrel and pin nut is adaptive.

2. the electronic jack of four connecting rods as claimed in claim 1 is characterized in that: described left lower link medial surface is provided with travel switch, on base, also is provided with travel switch; Two place's travel switches all with between the reducing motor have circuit to be connected, and when button actions, cut off the power supply of reducing motor.

3. the electronic jack of four connecting rods as claimed in claim 1; It is characterized in that: being provided with in the upper end between described two boxed rods can intermeshing several gear teeth; Hinge joint also is provided with intermeshing several gear teeth of ability in the lower end between two lower links on the base, play the effect of gear centering block.

4. the electronic jack of four connecting rods as claimed in claim 1 is characterized in that: described screw mandrel is provided with the square hole cylinder on that top of passing reducing motor.