JPH0425575Y2 - - Google Patents

Description

[Detailed Description of the Invention] (1) Field of Industrial Application The present invention relates to a hydraulic operating device for controlling a hydraulic compressor or the like that operates at high pressure, and has particularly excellent operability.

(2) Prior art A hydraulic operating device for controlling a hydraulic compressor that operates at high pressure using two valves is, for example, a hydraulic operating device developed in U.S. Pat.
It is conventionally known as described in Japanese Patent No. 131266.

(3) Problems that the invention aims to solve However, conventional hydraulic operating devices have problems such as neutral, temporary tightening,
In order to perform control in 4 positions, final tightening and halfway return,
Since two operation levers had to be operated individually, the operation could not be performed without using both hands, resulting in poor operability and the problem of easy operation errors.

(4) Means for Solving the Problems In order to solve the above problems, the present invention provides a hydraulic operating device that operates two adjacent valves that are pivotably supported. a first inner lever that is always biased in the upward direction by a spring to push down and operate the first valve;
a second inner lever that is pivoted parallel to the first inner lever and is always biased in the upward direction by a spring to push down and operate the second valve;
A first outer lever that is coaxially supported with the first inner lever and swings both the first and second inner levers in the downward direction when pressed down; and a first outer lever that is coaxially supported with the second inner lever and is pressed down. A second outer lever that swings only the second inner lever in the depressing direction when operated, and a second outer lever that is pivotably supported and always urged by a spring to engage with the first outer lever and the second outer lever. a first cam that engages with an engaging portion provided on the first outer lever to hold the first outer lever in a depressed state when the first outer lever is depressed; and a camshaft provided with a second cam that releases engagement of the first outer lever when pressed down.

(5) Effect With the above configuration, by pressing down the first outer lever from the neutral position, both valves are held in the operating position, and then by pressing down the second outer lever, one valve is activated. is deactivated and only the other valve is activated, and by pushing the first inner lever, only one valve is activated.

(6) Examples Examples of the present invention will be described below with reference to the drawings.

As shown in FIG. 2, in the hydraulic compression device, a booster 1 is connected to a hydraulic operating device 6 through a low-pressure hose 4 and a high-pressure hose 5. The booster 1 is connected to the tool 8, and the booster 1 is connected to the hoses 2 and 3.
The compression tool 8 is controlled by a hydraulic operating device 6.

As shown in FIGS. 1 and 3, the operating section of the hydraulic operating device 6 includes a first inner lever 9 and a second inner lever 11 provided in parallel, which are pivotably supported by a shaft 13, respectively. The side part of the first inner lever 9 is formed in a concave shape, the tip of the second inner lever 11 is formed in an L shape and enters the concave part of the first inner lever 9, and the first inner lever 9 is spring-loaded. 16 to the push rod 20 of the first valve, and the second inner lever 11 is connected to the push rod 21 of the second valve via the spring 17, so that both the first valve and the second valve are Temporary tightening of the compression tool 8 is performed when it is in the operating position, final tightening is performed when only the second valve is in the operating position, and halfway return is performed when only the first valve is in the operating position. It is configured. On the outside of the first inner lever 9, there is a distal end portion of a second inner lever 11 formed in an L-shape and a first inner lever that covers a portion other than the distal end portion of the first inner lever 9.
An outer lever 10 is pivotally supported on the same axis 13 as the first inner lever 9, and a second inner lever 1 formed in an L-shape is located outside the second inner lever 11.
A second outer lever 12 that covers areas other than the tip of the first outer lever 12 is pivotally supported by the second inner lever 11 and the same shaft 13, and a shaft 14 parallel to the shaft 13 is provided on the base end side of the first outer lever 10 and the second outer lever 12. The camshaft 15 is pivotally supported by the springs 18 and 19, and the camshaft 15 is biased counterclockwise in FIG.
a first cam 15a that engages with an engaging portion 101 provided on the first outer lever 10 to hold the first outer lever 10 in the depressed position when the outer lever 10 of the first outer lever 10 is depressed; Outer lever 1
When the camshaft 1 is pressed down, the camshaft 1 comes into contact with the contact portion 121 provided on the second outer lever 12.
5 in the clockwise direction in FIG.
A second cam 15b is provided which releases the engagement with the second cam 5a.

With the above configuration, when the first outer lever 10 is pushed down from the neutral state shown in FIG. 3 as shown in FIG. 4, both the first inner lever 9 and the second inner lever 11 are pushed down, and both valves are is activated, the compression tool 8 is temporarily tightened, and the camshaft 1 is
The first cam 15a of No. 5 is the first outer lever 10
The first inner lever 9 engages with the engaging portion 101 of the
and hold the second inner lever 11 in the depressed position. Next, as shown in FIG. 5 from the state shown in FIG. 4, when the second outer lever 12 is pushed down,
The contact portion 121 of the second outer lever 12 pushes up the second cam 15b of the camshaft 15 to release the engagement between the engagement portion 101 of the first outer lever 10 and the first cam 15a of the camshaft 15. 2
Only the valves are operated and the final tightening is performed. When returning the compression tool 8 during final tightening, as shown in FIG. 6, when the first inner lever 9 is pushed down, only the first valve is operated, and the return is performed halfway.

(7) Effects of the invention As described above, according to the invention, two valves can be operated with one touch with one hand, and the valves can be held in a temporarily tightened state, and the temporarily tightened state can be changed by the final tightening operation. Since a hydraulic operating device that automatically releases is provided, it is extremely easy to operate the hydraulic operating device and eliminates erroneous operation, and the present invention is effective in improving the work efficiency and safety of work using hydraulic compression devices. It is.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which FIG. 1 is a plan view of a hydraulic operating device, FIG. 2 is an explanatory diagram of the configuration of a hydraulic compression device, FIG. 3A is a sectional view taken along line A-A in FIG. FIG. B is a sectional view taken along line B--B in FIG. 1, FIGS. 4 to 6 are explanatory views of the operation, and FIGS. 7 and 8 are detailed views of the camshaft. 6... Hydraulic operating device, 9... First inner lever, 10... First outer lever, 11... Second
inner lever, 12... second outer lever,
13, 14... shaft, 15... camshaft.

Claims (1)

[Scope of utility model registration request] In a hydraulic operating device for operating two adjacent valves, a first valve is pivotably supported and is always biased in a push-up direction by a spring to push down and operate the first valve. an inner lever, a second inner lever that is pivoted in parallel with the first inner lever and always biased in the upward direction by a spring to push down and operate the second valve; and a second inner lever that is pivoted on the same axis as the first inner lever. A first outer lever that is pivoted coaxially with the second inner lever and that swings both the first inner lever and the second inner lever in the pushing direction when pushed down, and a first outer lever that is coaxially supported with the second inner lever and pushes only the second inner lever when pushed down. a second outer lever that is pivoted to swing in the downward direction; and a second outer lever that is swingably supported and always biased by a spring to engage with the first outer lever and the second outer lever, and that pushes down the first outer lever. A first cam that, when operated, engages with an engaging portion provided on the first outer lever to hold the first outer lever in a depressed state; 1. A hydraulic operating device comprising: a camshaft including a second cam that releases engagement.