Fitting apparatus for connecting hose

Abstract

The present invention is intended to connect a flexible hose to a fixed pipe in a vehicle such as a truck, and the main purpose is to provide a hose connection fitting device that prevents tension from occurring at the connection point between the flexible hose and the fixed pipe when the cab is tilted, and prevents cracks, damage, and refrigerant leakage problems caused by tension. To achieve the above objective, a hose connection fitting device is disclosed for connecting a fixed pipe and a flexible hose in a vehicle, comprising: a first fitting pipe fixed to the fixed pipe; a second fitting pipe coupled to the first fitting pipe while fixed to the flexible hose; a bearing interposed between the first fitting pipe and the second fitting pipe to rotatably support the second fitting pipe in the first fitting pipe; and a locking device installed between the first fitting pipe and the second fitting pipe to lock the second fitting pipe so as to be rotatably constrained to the first fitting pipe or unlock it so as to be rotatably rotatably in accordance with an electrical signal applied from the outside.

Description

Technology Field

[0001] The present invention relates to a fitting device for connecting hoses, and more specifically, to a fitting device for connecting a flexible hose and a fixed pipe in a vehicle. Background Technology

[0003] Generally, the engine, transmission, and other chassis components, along with a cooling module, are mounted in the lower part of the cab where the driver's seat is located in a truck, and the cab is designed to be tilted by a cab tilting system so that these components can be exposed to the outside during vehicle maintenance.

[0004] Among the various parts mounted on the lower part of the cab in the vehicle, the cooling module includes a radiator of the cooling system through which coolant passes, a condenser of the air conditioning system through which refrigerant passes, and a cooling fan, etc. Among the parts within the cooling module, the condenser, or other fixed parts such as the compressor, are connected to other parts of the air conditioning system installed in the cab through an air conditioning hose through which refrigerant flows.

[0005] Unlike the components of the air conditioning system that move together with the tilting cap in such a connection structure, the condenser and the like are fixedly installed on the body part below the cap. Therefore, a flexible and bendable air conditioning hose must be connected between the cap-side components that move together when the cap is tilted and the body-fixed components that are fixed to the body part for refrigerant circulation.

[0006] The above air conditioner hose is made of a material such as rubber and is connected to a metal air conditioner pipe attached to a vehicle body fixing part; when connecting, the air conditioner hose is joined and secured to the air conditioner pipe using a swaging method.

[0007] FIG. 1 is a drawing showing a conventional example in which a flexible hose is connected to a fixed pipe, wherein the fixed pipe (1) may be an air conditioner pipe made of a material such as metal, and the flexible hose (2) may be an air conditioner hose made of a material such as rubber. These are connected to each other and used as pipes through which refrigerant of an air conditioner system flows.

[0008] FIG. 2 is a cross-sectional view showing the connection state between a fixed pipe and a flexible hose. As illustrated, the fixed pipe (1) is connected so that it is inserted into the inner side of the flexible hose (2), and then a swaging member (3) is connected to the outer side of the flexible hose (2). In this state, force is applied to the swaging member (3) so that the flexible hose (2) is compressed against the fixed pipe (1) by the swaging member. As a result, the flexible hose (2) can be fixed in a connected state to the fixed pipe (1).

[0009] Meanwhile, in trucks, cab tilting is frequently performed for maintenance of the engine and chassis parts, and tension is generated in the connection between the air conditioning hose mounted on the cab side and the air conditioning pipe mounted on the body side as the air conditioning hose rotates when the cab is tilted.

[0010] As a result, cracks may occur in the swaged connection parts and damage to the air conditioner hoses, which can eventually lead to refrigerant leakage. Therefore, a solution is required to resolve the problems of damage and refrigerant leakage caused by tension in the connection parts when the cap is tilted. The problem to be solved

[0012] Accordingly, the present invention is intended to provide a hose connection fitting device for connecting a flexible hose to a fixed pipe in a vehicle such as a truck, which prevents tension from occurring at the connection point between the flexible hose and the fixed pipe when the cab is tilted, and prevents cracks, damage, and refrigerant leakage problems caused by tension.

[0013] The objectives of the present invention are not limited to those mentioned above, and other unmentioned objectives will be clearly understood by those skilled in the art to which the present invention pertains (hereinafter referred to as "skilled in the art") from the description below. means of solving the problem

[0015] To achieve the above objective, according to an embodiment of the present invention, a fitting device for connecting a fixed pipe and a flexible hose in a vehicle is provided, comprising: a first fitting pipe fixed to the fixed pipe; a second fitting pipe coupled to the first fitting pipe while fixed to the flexible hose; a bearing interposed between the first fitting pipe and the second fitting pipe to rotatably support the second fitting pipe in the first fitting pipe; and a locking device installed between the first fitting pipe and the second fitting pipe to lock the second fitting pipe so as to be rotatably constrained to the first fitting pipe or to unlock it so as to be rotatably rotatably according to an electrical signal applied from the outside. Effects of the invention

[0017] Thus, according to the hose connection fitting device of the present invention, tension can be prevented from occurring at the connection portion between the flexible hose and the fixed pipe when the cap is tilted. In addition, cracks, damage, and refrigerant leakage problems caused by tension can be effectively prevented. Brief explanation of the drawing

[0019] FIG. 1 is a perspective view showing a known air conditioner hose connected to an air conditioner pipe. FIG. 2 is a cross-sectional view showing the connection state of a known air conditioner pipe and air conditioner hose. FIG. 3 is a perspective view illustrating a hose connection fitting device according to an embodiment of the present invention. Figure 4 is a cross-sectional view taken along line 'A-A' of Figure 3. Figure 5 is a cross-sectional view taken along line 'B-B' of Figure 4. Figure 6 is a cross-sectional view taken along line 'C-C' of Figure 4. FIG. 7 is a cross-sectional view showing the operating state of a locking device in a hose connection fitting device according to an embodiment of the present invention. Specific details for implementing the invention

[0020] The specific structural or functional descriptions presented in the embodiments of the invention are merely illustrative for the purpose of explaining embodiments according to the concept of the invention, and embodiments according to the concept of the invention may be implemented in various forms. Furthermore, it should not be interpreted as being limited to the embodiments described herein, but should be understood to include all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention.

[0021] Meanwhile, in the present invention, terms such as "first" and / or "second" may be used to describe various components, but said components are not limited to said terms. For the sole purpose of distinguishing one component from other components, for example, without departing from the scope of rights according to the concept of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component.

[0022] When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. Conversely, when it is stated that one component is "directly connected" or "directly in contact" with another component, it should be understood that there are no other components in between. Other expressions used to describe the relationship between components, such as "between" and "exactly between," or "adjacent to" and "directly adjacent to," should be interpreted in the same way.

[0023] Throughout the specification, identical reference numbers denote identical components. The terms used in this specification are for describing embodiments and are not intended to limit the invention. In this specification, the singular form includes the plural form unless specifically stated otherwise in the text. As used in this specification, "comprises" and / or "comprising" do not exclude the presence or addition of one or more other components, steps, actions, and / or elements to the mentioned components, steps, actions, and / or elements.

[0025] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

[0026] FIG. 3 is a perspective view illustrating a hose connection fitting device according to an embodiment of the present invention. Also, FIG. 4 is a cross-sectional view taken along line 'A-A' of FIG. 3, FIG. 5 is a cross-sectional view taken along line 'B-B' of FIG. 4, and FIG. 6 is a cross-sectional view taken along line 'C-C' of FIG. 4.

[0027] In addition, FIG. 7 is a cross-sectional view showing the operating state of a locking device in a hose connection fitting device according to an embodiment of the present invention, where the left drawing shows the locked state of the locking device and the right drawing shows the unlocked state of the locking device.

[0028] The present invention is useful when applied to a vehicle in which a cab equipped with a driver's seat is tilted by a cab tilting system, such as a truck in which the cab is tilted. The present invention relates to a fitting device (4) for connecting a fixed pipe (1) and a flexible hose (2).

[0029] In particular, the present invention aims to provide a hose connection fitting device that prevents tension from occurring at the connection point between the fixed pipe and the flexible hose when the cap is tilted, and prevents cracks, damage, and refrigerant leakage problems caused by tension.

[0030] In the following description, the fixed pipe (1) may be a pipe connected to a part fixedly mounted on the vehicle body side, such as an air conditioning pipe connected to a part such as a condenser or compressor of an air conditioning system. The flexible hose (2) may be a hose connected to a part mounted on the tilting cap side, such as an air conditioning hose connected to a part such as an evaporator of an air conditioning system.

[0031] A fitting device (4) according to an embodiment of the present invention includes a first fitting pipe (10) coupled to the end of a fixed pipe (1) fixed to a rigid body (body fixing part) on the fixed part side of the vehicle body, and a second fitting pipe (20) coupled to the end of a flexible hose (2) connected to a part (cap mounting part) on the cap side, which is one of the movable parts of the vehicle body.

[0032] The first fitting pipe (10) is a component that is integrally fixed to the end of a fixed pipe (1), and the second fitting pipe (20) is a component that is fixed to the end of a flexible hose (2) by a fastening element such as a swaging member (22). The first fitting pipe (10) and the second fitting pipe (20) may be provided as pipes having a circular cross-sectional shape, and the first fitting pipe (10) has a diameter larger than the diameter of the second fitting pipe (20) so that the end of the second fitting pipe (20) can be inserted inwardly.

[0033] Additionally, the fitting device (4) according to an embodiment of the present invention may further include a bearing (30) interposed between the inner surface of the first fitting tube (10) and the outer surface of the second fitting tube (20) to rotatably support the second fitting tube (20) in the first fitting tube (10). Accordingly, the first fitting tube (10) and the second fitting tube (20) can maintain a state of being coupled to each other by the bearing (30), and the second fitting tube (20) can be rotated in the first fitting tube (10) by the bearing (30).

[0034] The bearing (30) may have the configuration of a conventional ball bearing, including an outer ring (31), an inner ring (32), a cage (33), and balls (34). In this case, the outer ring (31) is integrally fixed in a press-fitted state on the inner surface of the first fitting tube (10), and the inner ring (32) is integrally fixed in a press-fitted state on the outer surface of the second fitting tube (20).

[0035] As an example of the above bearing (30), a bearing may be used in which the cage (33) is integrally fixed to the outer ring (31) and when the inner ring (32) rotates integrally with the second fitting tube (20), only the balls (34) within the cage (33) roll against the inner ring (32). At this time, a mounting hole (35), which will be described later, may be formed between two adjacent balls (34) on one side of the cage (33).

[0036] Additionally, inside the first fitting pipe (10), a sealing member (40) made of an elastic material such as rubber may be interposed between the end of the second fitting pipe (20) inserted therein and the inner surface of the first fitting pipe (10). The sealing member (40) serves as a seal to prevent fluid (refrigerant) from leaking to the outside through the gap at the connection portion between the first fitting pipe (10) and the second fitting pipe (20).

[0037] The sealing member (40) is manufactured and installed in the shape of a disc of a predetermined thickness. A hole (41) of a predetermined diameter through which a refrigerant can pass is formed in the center of the sealing member (40), and an insertion part (42) is formed protruding along the entire perimeter of the edge of the hole (41), which slides along the inner surface of the second fitting pipe (20) while being inserted into the interior of the second fitting pipe (20).

[0038] In an embodiment of the present invention, the sealing member (40) and the stopper (51) described later are integrally coupled to move together. Accordingly, when the stopper (51) slides back and forth along the inner circumference of the first fitting tube (10), the sealing member (40) also moves back and forth integrally with the stopper (51), and at this time, the peripheral portion of the sealing member slides on the inner circumference of the first fitting tube (10), and the insertion portion (31) of the sealing member (40) slides on the inner circumference of the second fitting tube (20).

[0039] In addition, the hose connection fitting device (4) according to an embodiment of the present invention further includes a locking device (50) installed between the first fitting pipe (10) and the second fitting pipe (20) and selectively locking / unlocking the first fitting pipe (10) and the second fitting pipe (20) according to an electrical signal applied from the outside.

[0040] In an embodiment of the present invention, the locking device (50) is installed in a state in which it is mounted within a mounting hole (35) formed in a fixed member installed between the first fitting tube (10) and the second fitting tube (20). Here, the fixed member may be a cage (33) that supports a ball (34) so ​​as to be able to roll against the inner ring (32) as a fixed part fixed to the outer ring (31) of the bearing (30).

[0041] At this time, the locking device (50) may be configured to include a stopper (51) that is configured to slide forward and backward in the mounting hole (35) with one end inserted into the inside of the mounting hole (35), an actuator (52) that slides the stopper (51) forward and backward in the axial direction in the mounting hole (35) when driven, and an actuator driving unit (56) that drives the actuator (52) according to an electrical signal applied from the outside.

[0042] In this configuration, a locking groove (21) is formed on the end surface of the second fitting tube (20), and a locking projection (51a) that can be inserted into the locking groove (21) of the second fitting tube (20) is formed on the end of the stopper (51). The end inserted into the interior of the mounting hole (35) from the stopper (51) and the locking projection (51a) are formed to extend long in the front and back directions, and the end and the locking projection (51a) have a parallel shape.

[0043] The locking projection (51a) serves to prevent the second fitting tube (20) from rotating in the first fitting tube (10) by being inserted into or separated from the locking groove (21) of the second fitting tube (20) when the stopper (51) slides back and forth.

[0044] When the locking projection (51a) of the stopper (51) is inserted into the locking groove (21) of the second fitting tube (20), the second fitting tube (20) is in a restricted state where it cannot rotate in the first fitting tube (10), and this is the locked state of the locking device (50). On the other hand, when the locking projection (51a) of the stopper (51) is separated from the locking groove (21) of the second fitting tube (20), the second fitting tube (20) is in a state where it can rotate in the first fitting tube (10) by means of the bearing (30) (restricted release state), and this is the unlocked state of the locking device (50).

[0045] In an embodiment of the present invention, the actuator (52) may be installed to be located within the mounting hole (35). At this time, the actuator (52) may be configured to include a magnet (53) integrally coupled to the stopper (51), a solenoid coil (54) that moves the magnet (53) integrally coupled to the stopper when current is applied by the actuator driving unit (56) to slide the stopper (51) to an unlock position, and a spring (55) that is installed inside the mounting hole (35) in a state connected to the magnet (53) and provides an elastic restoring force to move the stopper (51) to a lock position.

[0046] The spring (55) is tensioned when the magnet (53) slides backward by the solenoid coil (54) to which current is applied. Additionally, when the current applied to the solenoid coil (54) is cut off, the spring (55) elastically restores, and at this time, the elastic restoring force of the spring (55) acts as a force to slide the magnet (53) forward to its original initial position.

[0047] The actuator driving unit (56) is configured to apply or cut off current to the solenoid coil (54) of the actuator (52) according to an electrical signal applied from the outside. When current is applied to the solenoid coil (54) of the actuator (52) by the actuator driving unit (56), a repulsive force is generated between the solenoid coil (54) and the magnet (53), and due to this repulsive force, the magnet (53) and the stopper (51) integrally coupled with the magnet (53) are pushed backward (see FIG. 7).

[0048] In this way, when the magnet (53) moves backward together with the stopper (51), the spring (55) connected to the magnet (53) is tensioned. Also, when the stopper (51) moves backward, the sealing member (40) integrally coupled with the stopper (51) also slides backward on the inner surface of the first fitting tube (10) and the inner surface of the second fitting tube (20) (see FIG. 7).

[0049] The sealing member (40) slides back and forth integrally with the stopper (51) when the stopper (51) moves back and forth, and slides back and forth on the inner surface of the first fitting pipe (10) and the inner surface of the second fitting pipe (20), thereby maintaining a sealing state between the first fitting pipe (10) and the second fitting pipe (20) at all times regardless of the front and rear position of the stopper (51) (see FIG. 7).

[0050] As described above, when the stopper (51) is moved backward, the locking projection (51a) of the stopper (51) is separated from the locking groove (21) of the second fitting tube (20), and the lock of the second fitting tube (20) by the locking device (50) is released. That is, as the locking device (50) becomes unlocked, the restraining state of the second fitting tube (20) by the stopper (51) is released (see FIG. 7), and subsequently, the second fitting tube (20) can be freely rotated in the first fitting tube (10).

[0051] The actuator drive unit (56) receives an electrical signal to release the lock state of the locking device (50) from the control unit of the tilted cap tilting lever or the cap tilting system when the driver or operator operates the cap tilting lever for cap tilting.

[0052] Accordingly, the actuator drive unit (56) is operated to apply current to the solenoid coil (54) of the actuator (52). At this time, as described above, a repulsive force is generated between the solenoid coil (54) and the magnet (53), causing the locking device (50) to be in an unlocked state, and consequently, the restraint state of the second fitting tube (20) by the stopper (51) is released, allowing the second fitting tube (20) to rotate freely in the first fitting tube (10) (see FIG. 7).

[0053] As described above, after the cap tilting lever is tilted, a force is applied in the rotational direction to the flexible hose (2) connected to the second fitting pipe (20) while the cap is tilted and raised by the cap tilting system. At this time, since the rotational restraint state of the second fitting pipe (20) by the locking device (50) is released (unlocked state), the second fitting pipe (20) can be freely rotated in the first fitting pipe (10) together with the flexible hose (2) via the bearing (30). Accordingly, no tension (stress) is applied to the connection part between the flexible hose (2) and the fixed pipe (1) when the cap is tilted.

[0054] After the cap tilting is completed, the actuator drive unit (56) receives an electrical signal from the control unit of the cap tilting system, and by receiving the electrical signal, the current applied to the solenoid coil (54) of the actuator (52) is cut off.

[0055] In this way, when the current is cut off and the flexible hose (2) and the second fitting pipe (20) are rotated in the opposite direction to the tilting state and then placed back in the initial position before tilting, in particular when the position of the locking projection (51a) of the stopper (51) and the position of the locking groove (21) of the second fitting pipe (20) coincide, the stopper (51) is pulled by the elastic restoring force of the spring (55) inside the mounting hole (35) and slides forward, and at this time, the locking projection (51a) of the stopper (51) is inserted again into the locking groove (21) of the second fitting pipe (20). Accordingly, the locking device (50) is locked again, and the flexible hose (2) and the second fitting pipe (20) are constrained so that they cannot be rotated again relative to the fixed pipe (1) and the first fitting pipe (10) (see FIG. 5).

[0056] In addition, when a driver or operator operates the cap tilting lever to restore the position of the cap while the cap is in a tilted state, an electrical signal to release the locking state of the locking device (50) is received from the control unit of the operated cap tilting lever or the cap tilting system.

[0057] Accordingly, the actuator drive unit (56) is operated to apply current to the solenoid coil (54) of the actuator (52). Accordingly, a repulsive force is generated between the solenoid coil (54) and the magnet (53), causing the locking device (50) to be in an unlocked state, and consequently, the restraint state of the second fitting tube (20) by the stopper (51) is released, allowing the second fitting tube (20) to rotate freely in the first fitting tube (10) (state of FIG. 7).

[0058] As described above, while the cap is lowered to its original initial position by the cap tilting system, a force may be applied in the rotational direction to the flexible hose (2) connected to the second fitting pipe (20). At this time, since the rotational restraint state of the second fitting pipe (20) by the locking device (50) is released (unlocked state), the second fitting pipe (20) can be freely rotated in the first fitting pipe (10) together with the flexible hose (2) via the bearing (30). Accordingly, no tension (stress) is applied to the connection part between the flexible hose (2) and the fixed pipe (1) during cap tilting.

[0059] After the lowering of the cap is completed, the actuator drive unit (56) receives an electrical signal from the control unit of the cap tilting system, and by receiving the electrical signal, the current applied to the solenoid coil (54) of the actuator (52) is cut off.

[0060] In this manner, when the current is cut off and the flexible hose (2) and the second fitting pipe (20) are rotated so that the position of the locking projection (51a) of the stopper (51) and the position of the locking groove (21) of the second fitting pipe (20) coincide, the stopper (51) is pulled by the elastic restoring force of the spring (55) inside the mounting hole (35) and slides forward, and at this time, the locking projection (51a) of the stopper (51) is inserted again into the locking groove (21) of the second fitting pipe (20). Accordingly, the locking device (50) is locked again, and the flexible hose (2) and the second fitting pipe (20) are restrained so that they cannot be rotated again relative to the fixed pipe (1) and the first fitting pipe (10) (state of FIG. 5).

[0061] In this way, according to the fitting device of the present invention, tension can be prevented from occurring at the connection point between the flexible hose and the fixed pipe when the cap is tilted. In addition, cracks, damage, and refrigerant leakage problems caused by tension can be effectively prevented.

[0063] Although embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements by those skilled in the art using the basic concept of the present invention as defined in the following claims are also included within the scope of the present invention. Explanation of the symbols

[0065] 1: Fixed pipe 2: Flexible hose 3: Swaging member 4: Fitting device 10 : 1st fitting pipe 20 : 2nd fitting pipe 21 : Locking Home 22 : Swaging Absence 30 : Bearing 31 : Outer ring 32 : Inner ring 33 : Cage 34 : Ball 35 : Mounting hole 40 : Sealing member 41 : Hole 42 : Insertion part 50 : Locking device 51 : Stopper 51a : Locking projection 52: Actuator 53: Magnet 54: Solenoid coil 55: Spring 56: Actuator drive unit

Claims

Claim 1 A fitting device for connecting a fixed pipe and a flexible hose in a vehicle, comprising: a first fitting pipe fixed to the fixed pipe; a second fitting pipe coupled to the first fitting pipe while fixed to the flexible hose; a bearing interposed between the first fitting pipe and the second fitting pipe to rotatably support the second fitting pipe in the first fitting pipe; and a locking device installed between the first fitting pipe and the second fitting pipe to lock the second fitting pipe so as to be rotatably constrained to the first fitting pipe or to unlock it so as to be rotatably rotatably according to an electrical signal applied from the outside. Claim 2 A hose connection fitting device according to claim 1, characterized in that the flexible hose is an air conditioning hose through which refrigerant of the air conditioning system flows, and the fixed pipe is an air conditioning pipe through which refrigerant of the air conditioning system flows. Claim 3 A hose connection fitting device according to claim 1, characterized in that the flexible hose is a hose connected to a part mounted on a movable part of a vehicle body, and the fixed pipe is a pipe connected to a part mounted on a fixed part of a vehicle body. Claim 4 A hose connection fitting device according to claim 3, characterized in that the movable part of the vehicle body is a vehicle cab provided with a driver's seat and tilted by a cab tilting system. Claim 5 A hose connection fitting device according to claim 1, characterized in that a sealing member is installed between the first fitting pipe and the second fitting pipe to prevent leakage of fluid flowing along the fixed pipe and the flexible hose. Claim 6 A hose connection fitting device according to claim 1, wherein the locking device comprises: a stopper inserted and coupled such that its end can slide back and forth into a mounting hole formed in a fixing member between the first fitting pipe and the second fitting pipe; an actuator that slides the stopper back and forth along the mounting hole; and an actuator driving unit that drives the actuator so that the stopper slides back and forth to a locked position or an unlocked position according to an electrical signal applied from the outside. Claim 7 A hose connection fitting device according to claim 6, wherein a locking groove is formed in the second fitting tube and a locking projection that can be inserted into the locking groove is formed in the stopper, so that when the stopper slides back and forth, the locking projection is inserted into the locking groove to rotately restrain the second fitting tube, or the locking projection is separated from the locking groove to release the rotationally restrained state of the second fitting tube. Claim 8 A hose connection fitting device according to claim 6, wherein a sealing member is installed between the first fitting pipe and the second fitting pipe to prevent leakage of fluid within the fixed pipe and the flexible hose and to maintain a constant sealing state, and the sealing member is integrally coupled with the stopper so as to move together when the stopper slides back and forth. Claim 9 A hose connection fitting device according to claim 8, wherein the sealing member has a hole formed in the center through which fluid passes, and an insertion part protruding from the entire periphery of the edge of the hole for insertion into the interior of a second fitting pipe, so that when the end of the second fitting pipe is inserted into the interior of the first fitting pipe and the stopper slides back and forth, the peripheral portion of the sealing member slides along the inner surface of the first fitting pipe and the insertion part of the sealing member slides along the inner surface of the second fitting pipe. Claim 10 A hose connection fitting device according to claim 6, wherein the actuator comprises: a magnet integrally coupled to the end of the stopper inside the mounting hole; a solenoid coil that moves the magnet to move the stopper to an unlock position when current is applied by the actuator driving unit; and a spring installed inside the mounting hole in a state connected to the magnet and providing an elastic restoring force to move the stopper to a lock position together with the magnet. Claim 11 A hose connection fitting device according to claim 6, wherein the flexible hose is connected to a part mounted on the cab of a vehicle that is tilted by a cab tilting system, the fixed pipe is connected to a part mounted on a fixed part of the vehicle body, and the actuator driving part drives the actuator according to an electrical signal applied by the cab tilting system. Claim 12 A hose connection fitting device according to claim 11, wherein the cap tilting system applies an electrical signal to the actuator drive unit to cause the unlock operation of the locking device to be performed when a cap tilt operation for tilting the cap or a cap restoration operation for lowering the cap to restore its position occurs.

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