JP3065742U - Hydraulic jack - Google Patents

Abstract

(57) [Problem] To provide a hydraulic jack having a quick release handle attached near a handle. SOLUTION: The hydraulic jack is provided with a bearing 16 under a hydraulic cylinder 30 so that a handle 40 can operate the hydraulic jack in a required direction. A quick release handle 50 is provided near the handle 40 which is connected to a control plate 43 which communicates with the hydraulic cylinder 30 to facilitate release of the pressure accumulated in the hydraulic cylinder 30.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention provides a hydraulic jack, in particular, a quick release handle for releasing hydraulic pressure in a cylinder, and a pair of rotatably mounted downwardly rotatable hydraulic jacks for easy lateral movement. And a hydraulic jack having the following steered wheels.

[0002]

[Prior art]

 The primary purpose of the jack is to lift the object upward so that the user can work under the object. FIG. 6 shows a conventional hydraulic jack. The hydraulic jack comprises a substantially U-shaped base 60 having a plurality of wheels 601 mounted on a lower side, a hydraulic cylinder 61 fixedly received in the base, and an operably mounted hydraulic cylinder. A handle 62 pivotally connected, a release button 63 mounted by and in communication with the hydraulic cylinder 61, and a piston rod 64 extendably connected to the hydraulic cylinder 61; An elevator 65 pivotally connected to the base 60 and having a seat 66 attached to its free end.

In use, the alternating up and down movement of the handle 62 builds up pressure in the hydraulic oil of the hydraulic cylinder 61. The hydraulic oil pressure drives the piston rod 64 to extend outward. Extension of the piston rod 64 drives the lift 65 to lift. The object (not shown) on the seat 66 is lifted in this way.

[0004]

[Problems to be solved by the invention]

 However, when this type of hydraulic jack is not in use or when work on an object has been completed, the user rotates the release button 63 to release the pressure in the hydraulic cylinder 61. To do so, the handle 62 must be removed from the hydraulic cylinder 61 and the forked end of the handle 62 must be used, which is very cumbersome for the user.

[0005] Moreover, the hydraulic jack can be moved in the longitudinal direction by the wheel 601, but when this type of hydraulic jack is to be turned in another direction, the user needs the jack. One side must be lifted and moved in the desired direction, which is ineffective on jacking and labor.

[0006]

[Means for Solving the Problems]

 A primary object of the present invention is to provide a hydraulic jack having a quick release handle mounted beside the handle so that a user can relieve pressure accumulated in the hydraulic cylinder.

Another object of the present invention is to provide a hydraulic jack which can be easily moved in a desired direction.

[0008] Other objects, advantages and novel features of the present invention will become more apparent from the following description with reference to the accompanying drawings.

[0009]

[Embodiment of the invention]

 Referring to FIG. 1, a hydraulic jack according to the present invention includes a substantially U-shaped base 10, a plurality of wheels 11 rotatably mounted below the base, and a pivotally mounted base 10. A lift 20, a hydraulic cylinder 30 attached to a first end of the base 10, a handle 40 pivotally attached to the first end of the base 10, and a pivot near the handle. Movably mounted quick release handle 50.

The base 10 includes a bracket 12 fixedly attached (preferably formed at one end) to one end of the base 10 near the wheel 11 and an extension integrally formed at the top of the bracket. A portion 13, a plate 14 fixedly mounted across the base 10, two projections 15 each extending parallel from one side of the plate, and fixedly mounted between the two projections 15. Bearing 16.

The elevating unit 20 is attached to the second end of the base 10 and has a seat 21 at the top. The hydraulic cylinder 30 has a piston rod 31 mounted below the extension 13, a support 32 fixedly mounted on the top of the bearing 16, and an integrally formed top surface of the support. It has two rods 33 and a spring 34 which is compressed and attached between the two rods 33.

Referring to FIG. 2, a quick release handle 50 pivotally mounted near the handle 40 is connected to a chain 41 movably received on the handle 40. Referring to FIG. 3, the free end of the chain 41 is connected to a link 42, and the link 42 is connected to a control plate 43. The control plate 43 is inclined with respect to the support base 32 when driven by the link 42. When the control plate 43 applies a force to the support 32, the pressure of the hydraulic oil in the hydraulic cylinder 31 is released.

FIG. 4 shows that the alternating up and down movement of the handle 40 lifts the lift 20 and then the seat 21 can lift an object (not shown) on the seat.

Referring to FIGS. 4 and 5, the hydraulic cylinder 30 further has a shaft 35 extending downward through the bearing 16. The handle 40, the support 32, the hydraulic cylinder 30 and the shaft 35 are fixedly connected to each other. In particular, since the shaft 35 and the support 32 are formed substantially integrally, the handle 40 is turned. Then, the shaft 35 is driven to change its direction at the same time. Therefore, the direction change of the hydraulic jack according to the present invention is easy.

[0015]

[Effect of the invention]

 From the above description, it can be seen that the present invention has the following effects. 1. Simple Structure The structure of the hydraulic jack is simple, more convenient and more effective in use. 2. Ease of work Having a quick release handle and shaft along with the bearing saves a lot of labor.

While many features and advantages of the present invention have been described in conjunction with details of the structure and function of the present invention, this disclosure is for illustrative purposes only and in detail, particularly in the form, size and arrangement of parts. It is to be understood that modifications are possible within the principles of the invention, to the fullest extent possible in the broader sense of the terms in the claims.

[Brief description of the drawings]

FIG. 1 is a perspective view of a hydraulic jack according to the present invention.

FIG. 2 is a plan view showing the quick release handle mounted along the handle of the hydraulic jack of the present invention.

FIG. 3 is a side view showing a relationship between a quick release handle and a hydraulic cylinder.

FIG. 4 is a side view showing that pressure is accumulated in a hydraulic cylinder and the elevating unit is driven by the pressure.

FIG. 5 is a plan view showing the turning direction of the hydraulic jack of the present invention.

FIG. 6 is a perspective view showing the structure of a conventional hydraulic jack.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Base 11 Wheel 12 Bracket 13 Extension part 14 Plate 15 Projection 16 Bearing 20 Elevating part 21 Seat 30 Cylinder 31 Piston rod 32 Support base 33 Rod 34 Spring 35 Shaft 40 Handle 41 Chain 42 Link 43 Control plate 50 Quick release handle

Claims (3)

[Utility model registration claims] 1. A hydraulic jack comprising a substantially U-shaped base (10) having a plurality of rotatably mounted wheels (11) and bearings (16).
An elevating section (20) having one end pivotally attached to the base (10) and a seat (21) attached to the other end; and an extension ( 1
3) Piston rod mounted on the lower side (31)
And a bearing (1)
A support (32) fixedly attached to the top of 6)
, Two rods (33) integrally formed on the top surface of the support (32), a spring (34) attached by compression between the two rods (33), and a bearing (1).
6) a shaft (35) fixedly connected to the lower side and extending through the bearing; and a base (10) for accumulating pressure in the hydraulic cylinder (30) and for steering the hydraulic jack. A handle (40) pivotally mounted on the first end; and a pivotally mounted beside the handle (40) to relieve pressure accumulated in the hydraulic cylinder (31). A hydraulic jack including a quick release handle (50). 2. A chain (41) movably received in a handle (40), said quick release handle (50).
Hydraulic jack according to claim 1, comprising a control plate (43) for controlling pressure relief in the hydraulic cylinder (30). 3. A link (42) is provided between the free end of the chain (41) and the control plate (43).
The hydraulic jack according to claim 2.