CN2145783Y

CN2145783Y - Electric jack

Info

Publication number: CN2145783Y
Application number: CN 92238696
Authority: CN
Inventors: 陆晓东
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-10-22
Filing date: 1992-10-22
Publication date: 1993-11-10
Anticipated expiration: 2002-10-22

Abstract

The utility model relates to an electric jack, in particular to a jack which is driven by electric power, comprising a motor, a gear group, a base, a gear, a ball, a supporting threaded rod group, a top tray sleeve barrel, etc. The utility model can achieve the goals of rapidly rising and falling and lifting the weight, the operation of rising and falling is controlled by the position-limit mechanism of the supporting threaded rod and the contacting switch, which can ensure the safety. The utility model has the advantages of reasonable structure, convenient operation, reliability, convenient carrying, time saving, labour saving, and safety.

Description

Electric jack

The utility model provides a kind of electronic jack, particularly a kind of novel jack with driven by power gear cluster and jacking mechanism.

The utility model belongs to lifting gear.

Up to now, carrying with car of equipment such as automobile is used to push up the lifting gear of lifting equipment such as automobile, uses traditional manual spiral or fluid pressure type jack mostly.Though wherein spiral jack is easy to carry, low cost of manufacture and sturdy and durable must be with the continuous actuating of hand to impel the gear driven screw rod, so waste time and energy during operation; The big heaviness of hydraulic jack acrosome, and critical defect such as the accident that to meet accident too soon that exist to descend.

The purpose of this utility model is to provide a kind of lightly attractive in appearance, sturdy and durable, time saving and energy saving and safe and reliable electronic jack.

The purpose of this utility model realizes as follows:

Utilize the motor drive gear group, thereby drive the studdle group, this studdle group top is provided with the sleeve of taking over a business of a fine-tuning height, and the elongation that can effectively extend makes its rising or decline, reaches the purpose that supports jacking with this jacking mechanism.Transmission between the worm and wheel and braking can effectively prevent the generation of slide displacement phenomenon, guarantee the safety fastness.The use of power supply can alleviate the manpower burden again greatly, reaches laborsaving purpose.

The utility model will be further described below in conjunction with accompanying drawing.

Fig. 1 is the constructional drawing of electronic jack.

Fig. 2 is the cutaway view of studdle group.

Fig. 3 is the cutaway view under the maximum raise-position state of studdle group.

Fig. 4 is the embodiment cutaway view of touch switch.

Fig. 5 is the stereoscopic figure of embodiment.

With reference to accompanying drawing, as propulsion source, it is mainly by electrical motor (1), gear cluster (2), base gear (3), ball (4), base (5), studdle group (6) and take over a business sleeve (7) etc. and form with a common motor (1) for the utility model system.Wherein:

Gear cluster (2) utilizes the worm gear (21) in worm screw (11) the driven gear group (2) fixing on electrical motor (1) main shaft, and the brake braking function of nationality worm screw (11) and worm gear (21) prevents sliding phenomenon.And the helical wheel (22) that this worm gear (21) can the drive coaxial rotation driven helical wheel (23) of nationality and helical wheel (22) engagement again drives coaxial helical wheel (24), drives base gear (3) rotation via helical wheel (24).

End face is provided with an arc groove (31) under the base gear (3), and on the base (5) end face also to be provided with an arc groove (51) and groove (31) symmetrical.Put several balls (4) in groove and be stuck between two grooves, both are separated.In addition, the axle center of this base gear (3) system is consistent with the studdle group.

Studdle group (6), its structure are that the top of screw rod (61) is overlapped a packing ring (611) and fixed it with nut (612) at the axis direction top of base gear (a 3) fixed screw rod (61).One of this screw jacket has the screwed pipe (62) of internal and external threads.Screwed pipe inwall hypomere and screw rod are with screw thread fit.Like this when screwed pipe rises to constrain height, the conflict negative thread of screwed pipe of packing ring (611) can make screwed pipe can't continue to rise, and avoids screw rod (61) and screwed pipe (62) because of carry breaks away from, thereby has the position limitation protection effect.On the outside thread of screwed pipe (62), overlap again in addition with guide screw pipe (63), this guide screw pipe (63) is except that having internal and external threads, and establish the retraction that its effect of an inner becket (631) can limit guide screw pipe (63) in the inwall upper end, make it to be no more than end position.The outer wall lower end is provided with a protruding grain, to make guide screw pipe (63) when rising or descend, can move along the guide groove (641) of sleeve (64) and can not rotate arbitrarily.Take over a business sleeve (7) with screw thread fit cover one outside the guide screw pipe, and this guide screw pipe (63) and take over a business sleeve (7) but between the nationality internal and external threads finely tune.

The structural group of above-mentioned each parts is become to be installed on the interior appropriate location＜as shown in Figure 2〉of electronic jack casing (8).When electrical motor (1) energized, the rotation of＜its power supply can be automobile cigarette lighter socket power or household AC power〉electrical motor, each gear (21 of worm screw driven gear group (2) on its main shaft, 22,23,24), and then drive base gear (3) rotation, base gear (3) is gone up fixedly connected screw rod (61) turn thereupon.Because the effect of screw thread fit, the screwed pipe (62) that is enclosed within on the screw rod (61) promptly rises under the promotion of screw rod gradually.Meanwhile, the rising of relative motion quick and stable also takes place in the guide screw of this screwed pipe (62) overcoat pipe (63).Yet, when studdle group (6) extends to the highest when spacing, (as shown in Figure 3) wherein the fixing packing ring (611) in screw rod (61) top promptly is stuck in screwed pipe inwall hypomere negative thread (621) top end, and guide screw pipe (63) promptly also rises along guide groove (641) relative motion of sleeve (64) because of screwed pipe (62) rotation.When its protruding grain (632) that rises to guide screw pipe bottom pushes up the latch closure (641) of pipe upper end in the sleeve (64), just be stuck and continue to rise.Also has simultaneously the sleeve of preventing (64) function of rotation and spacing rising arbitrarily between the set positioning key (81) of the guide channel (643) of sleeve (64) outer wall and casing (8).Guide screw is managed (63) and takes over a business between the sleeve (7) is that the nationality internal and external screw thread is done the highly fine setting of precision.

In addition, as shown in Figure 4, the appropriate location in casing (8) is provided with 2 touch switchs (9), to cooperate the set jacking block (643) in sleeve (64) outer tube lower end, as the automatic guidance motor power.Descend and to cut off the electricity supply automatically when being withdrawn into end position when electronic jack rises to the highest spacing or studdle group, prevent that parts from damaging.The rising of jack or step-down operation are controlled by the change-over key on the power lead.

In sum, the utility model is a kind of rational in infrastructure, easy and simple to handle, and is steadily reliable, easy to carry, time saving and energy saving, the novel jack that safety is firm, and the effect of embodiment also is consistent with the purpose of design, really the more practical advanced person of more various jacks than so far.

Claims

1, a kind of by electrical motor (1), gear cluster (2), base gear (3), ball (4), base (5), studdle group (6) and take over a business the electronic jack of lifting gear that sleeve (7) etc. is formed, it is characterized in that: worm screw (11) on electrical motor (1) main shaft and the engagement of the worm gear (21) of gear cluster (2), the gear (24) of gear cluster (2) and base gear (3) engagement, base gear (3) goes up fixed studdle (61) and overcoat screwed pipe (62) is formed studdle group (6), the sleeve of taking over a business (7) is arranged at its top, and ball (4) places between base gear (3) and the base (5).

2, electronic jack according to claim 1 is characterized in that: under the base gear (3) on end face and the base (5) end face each be provided with an arc groove (31) and (51), mid-several the balls of groove (4) relatively.

3, electronic jack according to claim 1, it is characterized in that: studdle group (6) ties up to the fixed screw rod in top (61) of the axis direction of base gear (3), this screw rod is with the screwed pipe (62) of internal and external threads, and a packing ring (611) is fixed in the top of screw rod (61) with nut (612), and the hypomere that makes the screwed pipe inwall has the negative thread that cooperates with screw rod (61), screw collar one guide screw is managed (63) outside screwed pipe (62) in addition, this guide screw pipe is except that having internal and external threads, and establish an inner becket (631) in the inwall upper end, and establish a protruding grain in the outer wall lower end, it can move along the guide groove (641) of sleeve (64), and sleeve (7) is taken over a business in socket one outside the guide screw pipe.

4, electronic jack according to claim 1 is characterized in that: guide screw is managed (63) and takes over a business to be provided with internal and external screw thread between the sleeve.