KR102676618B1 - Clip-clasp type multi-hydraulic coupler fixing device - Google Patents

Abstract

In the present invention, a plurality of female couplers are provided, a first connection block with a hanging hook is formed on one side, a plurality of male couplers symmetrical to the female coupler are provided, and one side is capable of sliding while facing the first connection block. A second connection block provided with a connection guide shaft for easy connection, an adjustment handle rotatably connected to the second connection block, one end is rotatably connected to the adjustment handle, and the other end is placed on a hook in a detachable state, When the control handle is rotated, the first connection block is pulled and moved in the direction of the second connection block, so that the first connection block and the second connection block are tightly connected. It is connected to the block movement connection bar and is adjusted. Provides a clip-clasp joint multi-hydraulic coupler fixing device including a connection fixing part that keeps the control handle fixed to the block moving connection bar while tightly connecting the first connection block and the second connection block by rotating the handle. .

Description

Clip-clasp type multi-hydraulic coupler fixing device {Clip-clasp type multi-hydraulic coupler fixing device}

The present invention relates to a clip-latch joint type multi hydraulic coupler fixing device that allows simultaneous connection and disconnection of a plurality of female couplers to which a plurality of hydraulic hoses are connected and a plurality of male couplers to which a plurality of hydraulic hoses are connected.

Generally, in various industrial fields, hydraulic hoses are connected and used to operate various types of devices depending on the purpose of use.

At this time, the connection is made by multiple hydraulic hoses and coupling devices to supply and discharge a large amount of fluid. If multiple hydraulic hoses and coupling devices are connected separately, work efficiency and stability are poor. .

Therefore, in recent years, a multi-hydraulic coupler fixing device consisting of a plurality of female couplers and a male coupler each connected to a plurality of hydraulic hoses is used to supply and discharge a large amount of fluid. In other words, the multi hydraulic coupler fixing device connects a plurality of hydraulic hoses by connecting one female coupler and one male coupler, allowing a large amount of fluid to move.

In this conventional multi-hydraulic coupler fixing device, a first block provided with a plurality of female couplers and a second block provided with a plurality of male couplers are arranged to face each other, and the forward rotation of the handle member rotatably connected to the first block Alternatively, as the first and second guide members protruding from the first and second blocks move in the first and second guide holes according to reverse rotation, the first and second blocks move closer to or farther away from each other, resulting in a plurality of female couplers and a plurality of male couplers. The coupler allows simultaneous connection or disconnection.

However, in the conventional multi hydraulic coupler fixing device, the first and second guide members slide on the first and second guide holes and are positioned at the first and second guide hole points of the handle member that are in contact with the first and second guide members. Stress is concentrated. As a result, when a certain period of time passes, wear occurs on the surface where the first and second guide holes of the handle member and the first and second guide members are formed, and clearance occurs at the point where the first and second blocks are joined in close proximity. As a result, there is a problem in that complete tight coupling is not achieved when combining blocks 1 and 2. In addition, if continuous vibration or impact force is generated while stress is applied by being caught through the handle member to maintain the combined state of blocks 1 and 2, damage may occur in the portion where the first and second guide holes of the handle member are formed. There is a problem.

Related technology for this conventional multi-hydraulic coupler fixing device is presented in Republic of Korea Patent Publication No. 10-1667983 (October 21, 2016).

The present invention is a clip-clasp that makes it easy to connect or disconnect a plurality of female couplers and a plurality of male couplers and maintains a stable connection when connecting a plurality of female couplers and a plurality of male couplers. The purpose is to provide a combined multi-hydraulic coupler fixing device.

In the present invention, a plurality of female couplers are provided, a first connection block with a hanging hook is formed on one side, a plurality of male couplers symmetrical to the female coupler are provided, and a sliding movement is provided on one side while facing the first connection block. A second connection block having a connection guide shaft for possible connection, an adjustment handle rotatably connected to the second connection block, one end rotatably connected to the adjustment handle, and the other end being placed in a detachable state on a hook. When the control handle is rotated, the first connection block is pulled and moved in the direction of the second connection block, so that the first connection block and the second connection block are tightly connected. A block movement connection bar is connected to the block movement connection bar. It is a clip-clasp combination type multi hydraulic coupler fixing device that includes a connection fixing part that keeps the control handle fixed to the block moving connection bar in a state in which the first connection block and the second connection block are closely connected by rotation of the control handle. provides.

Additionally, the block movement connection bar may have a horizontal cross-sectional shape of '⊂' shape.

In addition, a locking groove is formed on one side of the block moving connection bar, and when the first connection block and the second connection block are placed in close contact with each other on one side of the control handle, it is placed at a position corresponding to the locking groove. A fixed guide groove is formed, and the connection fixing part is installed inside the control handle so as to be slidably movable in and out of the control handle, and one end of the connection fixing shaft is disposed to protrude outside the control handle through the fixed guide groove. , It is inserted and installed inside the control handle to be connected to the connection fixation shaft, and may include a fixation spring that elastically supports the connection fixation shaft so that one end of the connection fixation shaft protrudes in the outer direction of the control handle through the fixation guide groove.

In addition, the block movable connection bar may be further provided with a release button unit that releases the state in which the control handle is fixed to the block movable connection bar by a connection fixing part after the first connection block and the second connection block are closely connected.

In addition, when the control handle is rotated so that the first connection block and the second connection block are connected in close contact with the block moving connection bar, a locking release groove disposed at a position corresponding to the connection fixing part is formed to pass through. The release button part is connected and installed to be able to slide in the inner and outer directions of the block moving connection bar through the locking release groove, and on one side, a release button is formed with a protruding locking protrusion on the inside of the block moving connecting bar to prevent it from being released in a locked state. The shaft is inserted and installed inside the block movement connection bar to be connected to the release button shaft, and one end of the release button shaft protruding in the direction of the connection fixture is inserted into the inside of the block movement connection bar until a pushing force applied from the outside occurs. It may include a release spring that elastically supports the release button shaft to be disposed.

In the clip-shackle combination multi-hydraulic coupler fixing device according to the present invention, when the control handle is rotated while the other end of the block movement connection bar is engaged with the locking hook of the first connection block, the rotational force of the control handle is applied to the block movement connection bar. As it is transmitted to the first connection block through, the first connection block is pulled and moved in the direction of the second connection block, and when connecting the first connection block and the second connection block, the end of the connection fixing shaft of the connection fixing part is connected to the block moving connecting bar. It is inserted into the locking groove and locked to keep the control handle fixed. In addition, when it is desired to separate the first connection block and the second connection block, the end of the connection fixing shaft is inserted into the inside of the control handle, the state of being locked in the fixing groove is released, and then the first connection block is moved by the block moving connection bar. Separation can be made by releasing the jammed state, making it easy to connect and separate the first connection block and the second connection block.

Figure 1 is a perspective view of a connection state of a clip-clasp combination type multi hydraulic coupler fixing device according to an embodiment of the present invention.
Figure 2 is a perspective view of the clip-clasp combination multi-hydraulic coupler fixing device in an separated state according to an embodiment of the present invention.
FIG. 3 is a cross-sectional view taken along line III-III shown in FIG. 1.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings. Prior to this, the terms or words used in this specification and claims should not be construed as limited to their usual or dictionary meanings, and the inventor should appropriately define the concept of terms in order to explain his or her invention in the best way. It must be interpreted as meaning and concept consistent with the technical idea of the present invention based on the principle of definability.

Referring to Figures 1 to 3, the clip-clasp combination type multi hydraulic coupler fixing device according to an embodiment of the present invention includes a first connection block 100, a second connection block 200, and an adjustment handle 300. , a block moving connection part 400, and a connection fixing part 500.

The first connection block 100 is arranged to face the second connection block 200, which will be described later, and is a part that connects a plurality of hydraulic hoses (not shown) with the second connection block 200. . Here, the first connection block 100 is shown as having a polygonal cross-section, but it is of course not limited to this and may also be formed in a circular cross-section.

The first connection block 100 is equipped with a plurality of female couplers 110 spaced apart from each other to be connected to a plurality of hydraulic hoses. At this time, the female coupler 110 is formed to penetrate the first connection block 100 and is connected to the hydraulic hose and the male coupler 210 of the second connection block 200. Here, one side of the female coupler 110 has a nipple structure to be connected to the hydraulic hose, and the other side of the female coupler 110 is connected to the male coupler 210 mounted on the second connection block 200.

In addition, on one side of the first connection block 100, a movement guide groove 101 may be formed to extend in the front and rear directions so that the connection guide shaft 220 of the second connection block 200 can be slidably inserted and connected. there is. At this time, the number of moving guide grooves 101 is formed corresponding to the installed number of connection guide shafts 220, and is formed in a position symmetrical to the position of the connection guide shaft 220.

In addition, a locking hook 120 is formed on one side of the upper surface of the second connection block 200 to detachably lock the other end of the block movable connection bar 400, which will be described later.

The second connection block 200 is a part that connects a plurality of hydraulic hoses together with the first connection block 100. Here, the second connection block 200 is preferably formed in a shape having the same cross-section as the first connection block 100, but of course, it is not limited thereto.

The second connection block 200 is equipped with a plurality of male couplers 210 spaced apart from each other to be connected to a plurality of hydraulic hoses. At this time, a plurality of male couplers 210 are installed symmetrically and spaced apart from each other on the female coupler 110 mounted on the first connection block 100. Here, the male coupler 210 is formed to penetrate the second connection block 200 and is connected to the hydraulic hose and the female coupler 110 of the first connection block 100. In addition, one side of the male coupler 210 has a nipple structure to be connected to the hydraulic hose, and the other side of the male coupler 210 is connected to the female coupler 110 mounted on the first connection block 100.

In addition, a connection guide shaft 220 is formed on one side of the second connection block 200 so as to be connected to the first connection block 100 in a state in which it can be slidably moved in the forward and backward directions while facing the first connection block 100. Here, the connection guide shaft 220 is extended in the direction of the first connection block 100 and is slidably inserted into the movement guide groove 101 of the first connection block 100. At this time, it is preferable that a plurality of connection guide shafts 220 are formed in parallel and spaced apart from each other so as to connect and support the first connection block 100 to the second connection block 200 in a stable sliding movement. .

The control handle 300 is a part rotatably connected to the second connection block 200. The control handle 300 is rotated forward or backward by the user and transmits rotational force to the block movement connection bar 400, which will be described later. That is, the control handle 300 transmits rotational force to the block movement connection bar 400, so that the first connection block 100 is connected to the second while the block movement connection bar 400 is caught on the locking hook 120. Connect while pulling in the direction of the block 200, or separate the first connection block 100 and the second connection block 200 while the block movement connection bar 400 is released from the locking hook 120. It can be done.

Here, the control handle 300 is shown as having a bar structure formed in a 'V' shaped cross section with one end in the longitudinal direction of the control handle 300 inclined at a certain angle, but it is of course not limited to this. Looking at the configuration of the control handle 300 in more detail, one longitudinal end of the control handle 300 is rotatably connected to one side of the second connection block 200 in a hinge structure. In addition, when one end of the block movement connection bar 400 is connected to the control handle 300 with a hinge structure, a rotation connection groove 301 is formed through the control handle 300 to allow the hinge shaft portion to be rotatably inserted and connected.

In addition, when the control handle 300 is rotated on one side of the control handle 300 and the first connection block 100 and the second connection block 200 are placed in close contact, a block movement connection bar 400 is installed on one side of the control handle 300. A fixing guide groove 310 is formed at a position corresponding to the locking fixing groove 410 formed in . This fixed guide groove 310 inserts and disposes the end of the connection fixing shaft 510 of the connection fixing part 500 together with the locking fixing groove 410, while the control handle 300 is attached to the connection fixing part 500. Allows it to remain stationary.

The block movement connection bar 400 converts the rotational force of the control handle 300 generated when the control handle 300 is rotated by the user into a linear pulling force on the connection guide shaft 220 of the second connection block 200. It is a member that allows transformation to be transmitted. That is, the block movement connection bar 400 connects the control handle 300 to the first connection block 100, so that when the control handle 300 rotates, the first connection block 100 is connected to the second connection block 200. ) direction, the first connection block 100 and the second connection block 200 are placed in close contact to connect the female coupler 110 and the male coupler 210. One longitudinal end of the block movable connection bar 400 is rotatably connected to the rotation connection groove 301 of the control handle 300 in a hinged structure, and the other longitudinal end of the block movable connection bar 400 is connected to the first It is placed in a detachable state on the hook 120 of the connection block 100.

One end of the block movable connection bar 400 is rotatably connected to the control handle 300 by a hinge in a stable coupling state, and the other end of the block movable connection bar 400 is It may be formed to have a '⊂' horizontal cross-sectional shape with both ends bent to face each other so that it can be placed on the hanging hook 120 in a detachable state. At this time, a reinforcing bar (not shown) that can reinforce the strength by connecting both ends of the block moving connecting bar 400 may be provided.

And, on one side of the block moving connection bar 400, when the first connection block 100 is connected and arranged in close contact with the second connection block 200 according to the rotation of the adjustment handle 300, an adjustment handle ( A locking fixing groove 410 is formed at a position corresponding to the fixing guide groove 310 of 300). This locking fixing groove 410 allows the end of the connecting fixing shaft 510 of the connecting fixing part 500, which will be described later, to be inserted, and the control handle 300 and the block moving connecting bar 400 can be maintained in a fixed state. let it be

In addition, a locking release groove 420 may be formed in the block moving connection bar 400 at a corresponding position on the surface facing the locking fixing groove 410. This locking release groove 420 is the connection fixing axis of the connection fixing part 500 when the adjustment handle 300 is rotated so that the first connection block 100 and the second connection block 200 are connected in close contact. (510) At a position corresponding to the axial direction, the release button shaft 610 of the release button portion 600, which will be described later, can be inserted and installed to be slidably movable in and out of the block movement connection bar 400.

The connection fixing part 500 moves the control handle 300 in a state in which the first connection block 100 and the second connection block 200 are closely connected by rotating the control handle 300 by the user. It is maintained fixed to the connection bar 400. That is, the connection fixing part 500 pulls the first connection block 100 in the direction of the second connection block 200 through the block moving connection bar 400 while connecting the first connection block 100 and the second connection block. When 200 is arranged to be closely connected, the control handle 300 is maintained in a fixed state where it no longer rotates, so that the first connection block 100 and the second connection block 200 are maintained in a close connection state. This connection fixing part 500 is installed to be connected to the block movable connection bar 400 and includes a connection fixing shaft 510 and a fixing spring 520.

The connection fixing shaft 510 is a straight rod-shaped member installed inside the control handle 300 so that it can be slidably inserted into and out of the control handle 300. One longitudinal end of the connection fixing shaft 510 is disposed to protrude out of the adjustment handle 300 through the fixing guide groove 310. In addition, the longitudinal edge of the connection fixing shaft 510 may be rounded in a semicircular shape. When the longitudinal direction of the connection fixing shaft 510 is rounded, the connection fixing shaft 510 When inserting one end of the block movable connection bar 400 into the locking groove 410 or removing it from the locking groove 410, the corner surface of the block movable connection bar 400 where the locking groove 410 is formed By reducing friction, it is possible to prevent damage to the ends of the block moving connection bar 400 and the connection fixing shaft 510. Here, reference numeral 510a is formed to protrude from the other end in the longitudinal direction of the connection fixing shaft 510, preventing the connection fixing shaft 510 from being separated from the control handle 300 while being caught on the inside of the control handle 300. It is a departure prevention group.

The fixing spring 520 elastically supports the connection fixing shaft 510 so that one edge of the connection fixing shaft 510 is maintained in a state protruding outward from the control handle 300 through the fixing guide groove 310. It is a spring member that does. That is, the fixing spring 520 maintains one edge of the connection fixing shaft 510 in a protruding state on the outside of the control handle 300, so that the block moving connection bar 400 moves through the rotation of the control handle 300. When the first connection block 100 and the second connection block 200 are tightly connected by pulling the first connection block 100, one edge of the connection fixing shaft 510 is caught by the block moving connection bar 400. It can be maintained in the inserted state in the fixing groove 410.

The fixing spring 520 is inserted and installed inside the adjustment handle 300 to elastically support the connection fixing shaft 510, and one end of the fixing spring 520 moves in the longitudinal direction of the connection fixing shaft 510. It is arranged to be connected to the other end, that is, the separation prevention end (510a) of the connection fixing shaft (510).

In this clip-clasp combination type multi hydraulic coupler fixing device of one embodiment, the user uses the connection fixing part 500 while fixing the adjustment handle 300 and the block moving connecting bar 400 with the connection fixing part 500. It may be provided with a release button unit 600 that allows the fixation state to be easily released. That is, the release button unit 600 closely connects the first connection block 100 and the second connection block 200, and then connects the control handle 300 to the block movement connection bar 400 with the connection fixing part 500. The user can easily release the fixed state of the control handle 300 and the block movement connection bar 400 by the connection fixing part 500 so that the control handle 300 can be rotated again in a fixed state. This release button portion 600 is connected to and installed on one side of the block moving connection bar 400, and may include a release button shaft 610 and a release spring 620.

The release button shaft 610 has a straight shape and is connected to the inside of the block movement connection bar 400 to enable sliding movement in the inner and outer directions of the block movement connection bar 400 through the locking release groove 420. do. On one side of the release button shaft 610, there is a locking protrusion (locking protrusion) that is caught at the inner end of the block movable connection bar 400 in which the lock release groove 420 is formed and prevents the block movable connection bar 400 from deviating from the outside. 611) is formed to protrude. In this way, the release button shaft 610 is operated by inserting and locking the end of the connection fixing shaft 510 of the connection fixing part 500 into the locking groove 410 of the block moving connection bar 400, and then allowing the user to use the connection fixing shaft ( If you want to release the jammed state by inserting it into the locking groove 410 of 510, the connection fixing shaft 510 can be easily pushed and moved so that the connection fixing shaft 510 can be separated from the locking fixing groove 410. do.

The release spring 620 is a spring member that elastically supports the release button shaft 610. That is, the release spring 620 is applied by the user from the outside to one end of the release button shaft 610, which is moved in the direction of the connection fixing axis 510 of the connection fixing part 500 by the pushing force applied by the user. It is placed in an inserted state inside the block movable connection bar 400 until a pushing force occurs, so that the connection fixing shaft 510 of the connection fixing part 500 is connected to the locking fixing groove 410 of the block movable connection bar 400. ) to prevent interference when inserted into the device. This release spring 620 is inserted and installed inside the block movement connection bar 400 to be connected to the release button shaft 610.

The operation of the clip-clasp combination multi-hydraulic coupler fixing device of an embodiment configured as described above is described as follows.

First, when the end of the connection fixing shaft 510 of the connection fixing part 500 is separated from the locking groove 410 of the block moving connection bar 400, the control handle 300 can be rotated freely. .

Therefore, the first connection block 100 is pulled in the direction of the second connection block 200 while the other end of the block moving connection bar 400 is caught on the hook 120 of the first connection block 100. In order to release this occurrence, the block movement connection bar 400 can be rotated and released from the locking hook 120, so that the first connection block 100 is moved away from the second connection block 200. The first connection block 100 and the second connection block 200 can be placed in a separated state while moving on the connection guide axis 220.

And, when trying to connect the first connection block 100 and the second connection block 200, the user connects the other end of the block moving connection bar 400 to the hanging hook 120 of the first connection block 100. After arranging the lock, the control handle 300 is rotated so that the first connection block 100 is pulled and moved in the direction of the second connection block 200 by the block movement connection bar 400.

Thereafter, when the first connection block 100 is pulled and moved in the direction of the second connection block 200 and arranged so that the first connection block 100 and the second connection block 200 are connected, the connection fixing part ( The end of the connection fixing shaft 510 of 500) is inserted into the locking groove 410 of the block movable connection bar 400 and is locked.

In this way, when the end of the connection fixing shaft 510 of the connection fixing part 500 is inserted into the locking groove 410 of the block movable connection bar 400 and locked, the control handle 300 is connected to the block movable connection bar 400. ) is maintained in a fixed state without rotation. Then, the first connection block 100 and the second connection block 200 are connected in a state in which the first connection block 100 is pulled in the direction of the second connection block 200 through the block moving connection bar 400. This connection state can be maintained stably.

In this way, the clip-clasp combination multi-hydraulic coupler fixing device of one embodiment is configured to lock the other end of the block moving connection bar 400 to the locking hook 120 of the first connection block 100 and adjust the control handle 300. ), the rotational force of the control handle 300 is transmitted to the first connection block 100 through the block movement connection bar 400, and the first connection block 100 is pulled in the direction of the second connection block 200. When the first connection block 100 and the second connection block 200 are connected, the end of the connection fixing shaft 510 of the connection fixing part 500 is moved to the locking groove 410 of the block moving connection bar 400. ) is inserted and caught to maintain the control handle 300 in a fixed state. In addition, when it is desired to separate the first connection block 100 and the second connection block 200, the end of the connection fixing shaft 510 is inserted into the inside of the adjustment handle 300 and the locking fixing groove 410 is formed. After releasing the locked state, separation can be made by releasing the locked state of the first connection block 100 by the block moving connection bar 400, so that the first connection block 100 and the second connection It makes it easy to connect and disconnect the block 200.

The present invention has been described with reference to the embodiments shown in the drawings, but these are merely illustrative, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true scope of technical protection of the present invention should be determined by the technical spirit of the attached claims.

100: first connection block 110: female coupler
200: second connection block 210: male coupler
220: Connection guide shaft 300: Control handle
310: Fixed guide groove 400: Block moving connection bar
410: Jam fixing groove 420: Jam release groove
500: Connection fixing part 510: Connection fixing shaft
520: Fixed spring 600: Release button part
610: Release button shaft 620: Release spring

Claims (5)

A first connection block is provided with a plurality of female couplers and has a hook on one side;
A second connection block is provided with a plurality of male couplers symmetrical to the female coupler, and has a connection guide shaft on one side to enable sliding movement while facing the first connection block;
An adjustment handle rotatably connected to the second connection block;
One end is rotatably connected to the control handle, and the other end is placed on a hook in a detachable state, so that when the control handle is rotated, the first connection block is pulled and moved in the direction of the second connection block, thereby connecting the first connection block and the second connection block. 2 Block moving connection bar that connects the connection blocks in a tight state; and
A connection fixing part is connected to the block moving connection bar and maintains the adjustment handle fixed to the block moving connection bar while the first connection block and the second connection block are closely connected by rotation of the adjustment handle,
A locking groove is formed on one side of the block moving connection bar,
When the first connection block and the second connection block are arranged to be in close contact with each other, a fixed guide groove is formed on one side of the control handle, which is disposed at a position corresponding to the engaging fixing groove,
The connection fixing part,
A connection fixing shaft is inserted and installed inside the control handle to be able to slide in and out of the control handle, and one end is disposed to protrude outside the control handle through a fixed guide groove,
A clip-clasp combination that is inserted into and installed inside the control handle to be connected to the connection fixing shaft, and includes a fixing spring that elastically supports the connection fixing shaft so that one end of the connection fixing shaft protrudes outward from the control handle through the fixing guide groove. Multi-hydraulic coupler fixing device. In claim 1,
The block moving connection bar is a clip-clasp combination multi-hydraulic coupler fixing device with a horizontal cross-sectional shape of '⊂'. delete A first connection block is provided with a plurality of female couplers and has a hook on one side;
A second connection block is provided with a plurality of male couplers symmetrical to the female coupler, and has a connection guide shaft on one side to enable sliding movement while facing the first connection block;
An adjustment handle rotatably connected to the second connection block;
One end is rotatably connected to the control handle, and the other end is placed on a hook in a detachable state, so that when the control handle is rotated, the first connection block is pulled and moved in the direction of the second connection block, thereby connecting the first connection block and the second connection block. 2 Block moving connection bar that connects the connection blocks in a tight state;
A connection fixing part that is connected to the block moving connection bar and maintains the adjustment handle fixed to the block moving connection bar while the first connection block and the second connection block are closely connected by rotation of the adjustment handle; and
It is provided on the block movable connection bar, and includes a release button unit that releases the state in which the control handle is fixed to the block movable connection bar by a connection fixing part after the first connection block and the second connection block are closely connected,
When the control handle is rotated to connect the first connection block and the second connection block in close contact with the block moving connection bar, a locking release groove disposed at a position corresponding to the connection fixing part is formed to pass through,
The release button part,
A release button shaft is connected and installed to be able to slide in the inner and outer directions of the block moving connection bar through the locking release groove, and a locking protrusion is formed on one side to prevent the block moving connection bar from being released in a locked state, and
It is inserted and installed inside the block moving connecting bar to be connected to the release button shaft, and one end of the release button shaft protruding in the direction of the connection fixture is inserted and placed inside the block moving connecting bar until a pushing force applied from the outside occurs. A clip-clasp type multi-hydraulic coupler fixing device that includes a release spring that elastically supports the release button shaft.
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