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Electric jack for vehicle

A kind of jack and electric technology, which is applied in vehicle maintenance, workshop equipment, transmission devices, etc. It can solve the problems that the jack does not have a lifting unit, and the vehicle cannot be lifted or lifted.

Inactive Publication Date: 2002-12-25
沈钟煜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned jack does not have any device that allows the user to freely adjust the stroke of the lifting unit, so this jack cannot lift or lift the vehicle to the required large height when required

Method used

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  • Electric jack for vehicle
  • Electric jack for vehicle
  • Electric jack for vehicle

Examples

Experimental program
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Embodiment Construction

[0022] Reference is now made to the drawings in which identical or similar parts are labeled with the same reference numerals throughout the various figures.

[0023] Fig. 3 is an exploded perspective view of an electric jack according to a preferred embodiment of the present invention. As shown, the jack of the present invention has a unitary body. The overall body includes a lifting unit casing 1 with a base flange 1a at its lower end. A lifting unit is housed in the lifting unit casing 1 . The power transfer unit is located in the bottom of the lifting unit casing 1 . An annular casing 1b is formed on the bottom side of the lifting unit casing 1, and this annular casing 1b is combined with the lifting unit casing 1 to form a structure. Installed on the base flange 1a, the bottom of the jack is closed. The motor casing 2a is segmented cylindrical and is vertically placed in the annular casing 1b. The lower part of the motor casing 2a with a large radius is located in the...

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Abstract

In the electric jack for vehicles of the present invention, the lifting unit comprises a helical lifting column, and the internal thread is only formed at the lower part of the helical lifting column, thereby reducing its frictional resistance. A pin is placed in a horizontal groove formed at the top of the primary helix, this pin protruding slightly into two longitudinal cavities symmetrically formed at the top of the secondary helix. A coil spring, spring cover and snap ring are placed sequentially over the pin with the snap ring seated in an annular groove formed on the inner surface of the top wall of the secondary helix, thereby allowing the coil spring to bias the pin. As a result, the secondary helix is ​​prevented from rising together with the helical lifting column. A support post having a top support member and external threads capable of movably engaging the secondary helix and the gap between the helical lifting posts when the external threads are engaged with the internal threads of the helical lifting post, thereby allowing the user to follow the It is required to adjust the stroke of the lifting unit.

Description

technical field [0001] The invention relates to an electric jack for lifting or lifting a vehicle to a required height, in particular to an electric jack, which consists of a power transmission unit and a lifting unit, and its design purpose is to reduce the The unnecessary power consumption caused by the frictional resistance formed at the engaging thread joint, which consists of a device that can reliably make the screw lifting column lift ahead of the secondary screw when operating the jack, and a device that allows the user to adjust the lifting unit at will The device of the stroke. Background technique [0002] In the prior art, the jacks used to lift or lift the vehicle can be divided into the following categories: screw jacks, rack jacks, pneumatic or hydraulic jacks and electric jacks. In recent years, several electric jacks have been proposed and widely used. An example of such a conventional electric jack can be found in US Pat. No. 4,609,179. [0003] The stru...

Claims

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Application Information

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IPC IPC(8): B60S9/08B66F3/10B66F3/44
CPCB66F3/10B66F3/44F16H25/205F16H25/2056Y10S254/04B60S9/08
Inventor 沈钟煜
Owner 沈钟煜
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