KR20130098567A - Locking and unlocking device of working vehicle - Google Patents

Abstract

The present invention relates to a locking and releasing device for a work vehicle, and more particularly, to a locking and releasing device for a work vehicle, which can be locked and released according to a driver's operation seated in a driver's seat and the number of parts and processes is reduced. .
Locking and releasing device for a work vehicle according to the present invention, the operation unit is installed rotatably in a position that the driver can operate in the driver's seat; A cable that linearly reciprocates by a motion of the operation unit; And a linker connected to the cable to rotate and a latch unit interlocked according to the movement of the linker, and a striker fixedly installed on a work vehicle and selectively restrained by an opposing movement between the linker and the latch unit. A coupling unit having a striker groove, an elastic portion for restoring the linkage portion and the latch portion, and a guide portion for guiding movement of the linkage portion and the latch portion; According to the lock and release device for a work vehicle according to the present invention, the lock and release device can be operated by manipulating the operation unit while the driver is seated, and thus the convenience of use can be expected to be improved. In addition, it is possible to expect the effect of reducing the number of parts, and can be expected to improve the assembly and productivity according to the reduction of the number of parts.

Description

Locking and unlocking device of working vehicle

The present invention relates to a locking and releasing device for a work vehicle, and more particularly, to a locking and releasing device for a work vehicle, which can be locked and released according to a driver's operation seated in a driver's seat and the number of parts and processes is reduced. .

The present invention relates to a locking and releasing device mounted on a work vehicle, and can be utilized in various work vehicles. A work vehicle is a vehicle used to carry out work desired by a driver at a construction or civil engineering site or an industrial site, and includes a heavy work vehicle, an excavator and a loader, which are used at a construction or civil engineering site. A forklift truck or a crane that performs a work such as moving or stacking a truck corresponds to a work vehicle.

 Hereinafter, for the convenience of description, an exemplary excavator, which is a typical form of a work vehicle, will be described. The excavator is largely composed of a rotating body capable of turning in a direction, a moving body installed on the lower side for the movement of the rotating body, and a work body coupled to the rotating body to perform a desired work of the driver.

The rotating body has a form of a rectangular parallelepiped as a whole, and provides a cab for providing a space for a nuclear power plant of a driver, a power room for producing and providing necessary power, and the movable body is formed in a wheel or caterpillar form, In contact with the rolling motion is installed so that the moving body to the driver in the desired position or direction.

In addition, the work body is a boom that is rotatably installed in the up and down direction with the rotational center of the portion coupled to the rotating body and the arm is connected to the boom and rotatably installed by the connecting portion as the rotation center, and the arm Is connected to the end of the bucket consists of a bucket that is rotatably mounted with the connection portion as the rotation center.

The driver's seat is mounted in the inner space of the cab provided in the rotating body so that the driver can sit and drive the excavator, and various operation devices for the driver's driving are installed around the driver's seat.

On the other hand, Republic of Korea Patent Publication No. 2005-0012508 discloses a control lever safety device for heavy equipment, this open patent is easy to enter and exit the cab even in the lock state of the control box of the console box installed on the side of the driver's seat, tilting the console box Due to the operation of the limit switch connected to the safety lever, the electric signal supplied to the control lever is cut off so that the operation device can be prevented even when the control lever is operated or touched while the machine is started when the console box is tilted. The invention is disclosed.

In addition, the present patent discloses that when the operator wants to leave the driver's seat during operation, the locking state of the console box is released when the locking lever is operated so that the console box rotates clockwise around the hinge pin due to the extension of the gas spring. Accordingly, the power of the limit switch is turned off, so that the supply of fluid to the work device can be cut off by the solenoid valve driving.

Therefore, when the driver leaves the driver's seat in the state that the start of the equipment is started, the operation of the work device is stopped even when the control lever is inadvertently operated or touched by the driver's carelessness, and thus, the invention which prevents the occurrence of a safety accident is disclosed.

On the other hand, according to the disclosed patent, as the lock or release of the console box is progressed by a link directly connected to the locking lever which can be operated by the driver in the driver's seat, it becomes inconvenient to use in a part requiring remote lock or release.

In addition, the assembly may be somewhat degraded by a plurality of interconnected configurations, and even if any one abnormality occurs, the whole must be separated and repaired or replaced.

An object of the present invention is to provide a remote locking and releasing device for a work vehicle that is easy for a driver to sit in a driver's seat and operate.

Another object of the present invention is to provide a locking and releasing device for a work vehicle in which the number of parts and processes are reduced.

Locking and releasing device for a work vehicle according to the present invention, the operation unit is installed rotatably in a position that the driver can operate in the driver's seat; A cable that linearly reciprocates by a motion of the operation unit; And a linker connected to the cable to rotate and a latch unit interlocked according to the movement of the linker, and a striker fixedly installed on a work vehicle and selectively restrained by an opposing movement between the linker and the latch unit. A coupling unit having a striker groove, an elastic portion for restoring the linkage portion and the latch portion, and a guide portion for guiding movement of the linkage portion and the latch portion; .

The locking and releasing device for a work vehicle according to the present invention is configured such that the locking and releasing device operating by the operating unit is connected by a cable while the operating unit operated by the driver is located in an operable range while seated in the driver's seat.

In addition, the movement of the locking and releasing device is guided by a case surrounding the locking and releasing device.

As such, the operation unit operated by the driver is configured to be connected to the lock and release device and the cable while being located in the operable range while seated in the driver's seat, thereby operating the lock and release device by operating the operation unit while the driver is seated. It is possible to expect the effect that the ease of use can be improved.

Furthermore, the operation unit and the coupling unit are connected and interlocked by a cable, so that the locking unit can be operated by operating the control unit in a state where the driver is seated at the coupling unit located at a long distance, thereby improving convenience of use. You can expect.

In addition, since the interlocking part and the latching part interlocked by the cable connected to the operation part are located inside the case, it is possible to expect the effect of protecting against external shock or contamination.

In addition, the movement of the interlocking part and the latch part is guided by the case, so that the effect of reducing the number of parts can be expected, and the effect of improving assembly and productivity can be expected as the number of parts is reduced.

1 is a perspective view showing the appearance of the work vehicle to which the lock and release device according to an embodiment of the present invention is applied.
Figure 2 is a partial cutaway view showing the configuration of the driver's seat of the work vehicle to which the lock and release device according to an embodiment of the present invention.
Figure 3 is a left side view showing a state in which the lock and release device of the work vehicle according to an embodiment of the present invention is applied.
Figure 4 is a right side view showing the configuration of the locking and unlocking device of the work vehicle according to an embodiment of the present invention.
5 is a perspective view showing a case of the coupling unit which is a part of the locking and releasing device of the work vehicle according to an embodiment of the present invention.
Figure 6 is a right side view showing the operation of the locking and unlocking device of the work vehicle according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, the configuration of the locking and releasing device of the work vehicle according to the present invention will be described by way of example.

It is to be understood, however, that the scope of the present invention is not limited by the embodiments described below, and those skilled in the art, upon reading the present disclosure, It will be easily suggested, but this will also be included in the technical idea of the present invention.

In addition, terms used in the present specification or claims are concepts selected for convenience of description and should be properly interpreted as meanings corresponding to the technical idea of the present invention in grasping the technical contents of the present invention.

1 is a perspective view showing the appearance of the work vehicle to which the locking and releasing device according to an embodiment of the present invention is applied. Referring to FIG. 1, an external shape of an excavator, which is a representative example of a work vehicle to which a locking and releasing device according to an exemplary embodiment of the present invention is applied, is illustrated.

An excavator is a work vehicle for digging the ground, or processing the ground or rock excavated by mining rocks. The excavator is coupled to the rotating body 10 which is located on the relatively upper side, the moving body 40 for moving the rotating body 10 to the lower side of the rotating body 10, and coupled to the rotating body 10 And the work piece 50 which carries out work by operation of a driver.

The rotating body 10 is formed in the form of a hexahedron having an internal space as a whole, the power chamber 20 for generating power for moving and performing work and the like, and located on one side of the power chamber 20 of the driver It consists of a cab 30 which provides a driving space.

The outer surface of the power chamber 20 is equipped with a plurality of panels for selectively opening and closing the inner space of the power chamber 20, these panels are mounted to be selectively rotated while being operated by a driver or a user.

The panel mounted on the outer surface of the power compartment 20 is mounted to selectively open or close the power compartment 20 by a driver or a user, so that the panel is locked or released by the driver in an interior space of the cab 30. It is configured to be able to, or to move to the outer space of the cab 30 to rotate the panel, or locking and unlocking by the operating lever (71 in FIG. 2) mounted in the interior space of the cab 30 It can be mounted as possible.

As such, when the panel mounted on the outer surface of the power chamber 20 to be selectively rotated is mounted to be lockable and unlockable by the operation lever 71, a plurality of configurations required for the operation of locking and releasing the panel are provided. This reduction has the advantage of improving the assembly and productivity of the excavator.

That is, when the panel is mounted so that the driver or user moves and directly rotates, the locking device and the release device required to rotate the panel are exposed on the outer surface of the power chamber 20, but the operating lever 71 When the lock and release is configured to be enabled by the lock and release device is located in the internal space of the excavator, it has the advantage that the safety from contamination or damage is improved.

In addition, parts such as a key for rotating the panel are unnecessary, and thus the number of parts is reduced.

A door 31 formed in a plate shape having a predetermined thickness is rotatably mounted on a side surface of the cab 30 so as to selectively open and close a side surface of the cab 30. The driver enters and exits the interior space of the cab 30 through the side of the cab 30 opened and closed by the door 31.

The door 31 is equipped with a locking device for selectively limiting the rotation of the door 31 by the driver, by the locking device the door 31 is limited to the rotation of the interior space of the cab 30 This protects the driver from external shocks and prevents the driver from falling during work.

In addition, a tilting device for tilting the cab 30 may be further provided between the bottom surface of the cab 30 and the top surface of the movable body 40. The tilting device is a device for improving the usability of the excavator in the space where the excavator is located.

The mobile body 40 is located below the rotating body 10, and the mobile body 40 moves upward by the rotation of the crawler-type moving means for the movement of the excavator and the crawler-type moving means. It consists of a support beam for supporting the rotating body (10) of. Of course, a wheel is mounted on the movable body 40 so that the movable body 40 may be moved.

The work piece 50 is rotatably coupled to the rotating body 10. The work piece 50 is configured to be bent while being formed in the form of a boom, and a bucket 51 is mounted at an end portion to perform a function of embedding the excavated soil and the like. The bucket 51 may be equipped with other work tools as necessary, it has the advantage that can be utilized in various ways by selecting a tool suitable for the work site.

Hereinafter, the driver's seat 32 installed in the cab 30 will be described with reference to FIG. 2. FIG. 2 is a partial cutaway view illustrating a driver's seat configuration of a work vehicle to which a locking and releasing device according to an exemplary embodiment of the present invention is applied.

Referring to FIG. 2, the driver's seat 32 is provided inside the driver's cab 30 in which the driver can sit. The driver's seat 32 includes a rear seat 321 capable of supporting the upper body and a lower seat 322 capable of supporting the lower body. The rear seat 321 is formed to have a long rectangular shape in the longitudinal direction is provided to enable the driver to operate the excavator in a comfortable state by supporting the upper body.

The lower seat 322 is provided to enable the driver to operate the excavator in a comfortable state by supporting the lower body. In order to protect the driver from vibration transmitted to the cab 30, the rear seat 321 and the lower seat 322 are filled with a material such as a sponge, for example, a material that absorbs vibration, and an outer surface thereof. In order to protect the material filled in the inner space from the impact applied to the outer space is formed in the form of wrapping the outer surface of the filling material with leather or polymer composite material.

The lower side of the lower seat 322 is equipped with a plurality of shock absorbing members are configured to mitigate the shock transmitted from the outside to be delivered to the driver, the driver to the left and right of the lower seat 322 to drive the excavator In order to operate the operation lever 71, and the operation box and the like, the console box 60 is mounted.

The console box 60 is formed in the form of a box having a predetermined internal space, at least a part of the operation lever 71, an electric wire for supplying electrical energy to the operation button, and the operation button in the internal space. And a main board which transmits and receives signals and data for controlling a plurality of parts by the operation of a plurality of components and processes various information.

In addition, the console box 60 is equipped with a locking and releasing device for selective locking and unlocking of the panel of the power chamber 20, the console box 60 itself, and other parts.

Hereinafter, a locking and releasing device for a work vehicle according to an exemplary embodiment of the present invention will be described with reference to FIGS. 3 to 5.

3 is a left side view showing a state in which a locking and releasing device for a work vehicle according to an embodiment of the present invention is applied, and FIG. 4 is a right side view showing a configuration of a locking and releasing device for a work vehicle according to an embodiment of the present invention.

5 is a perspective view illustrating a case which is a part of a coupling unit of a vehicle locking and releasing device according to an exemplary embodiment of the present invention.

Locking and releasing device for a work vehicle according to an embodiment of the present invention, the operation unit is installed to be rotatable in a position that the driver can operate in the driver's seat; A cable that linearly reciprocates by a motion of the operation unit; And a linker connected to the cable to rotate and a latch unit interlocked according to the movement of the linker, and a striker fixedly installed on a work vehicle and selectively restrained by an opposing movement between the linker and the latch unit. A coupling unit having a striker groove, an elastic portion for restoring the linkage portion and the latch portion, and a guide portion for guiding movement of the linkage portion and the latch portion; .

The operation unit 70 includes an operation lever 71 for operating in a state where the driver is seated and gripped by the driver's seat 32, a support plate 72 for supporting the operation lever 71, and the operation lever 71. ) Is configured to include an operation elastic member 73 for restoring to its original state by its elasticity.

The manipulation lever 71 has a thickness of a certain degree, made of a rectangular plate shape long in the longitudinal direction, the central portion in the longitudinal direction is rotatably coupled to the support plate 72.

As such, when the longitudinal center portion of the operation lever 71 is rotatably coupled to the support plate 72, the operation lever 71 rotates around the engagement portion with the support plate 72 as the rotation center. Done.

In other words, the operation lever 71 is rotated by the driver as the center of rotation by the engaging portion engaged with the support plate 72 in the longitudinal center portion in detail by the operation of the driver gripping and pulling the upper end of the operation lever 71. Done.

At this time, the operation lever 71 is rotated in the opposite direction to the direction of rotation of the upper end portion and the rotational movement of the lower end portion of the operation lever 71 gripped by the driver to operate.

By the manipulation of the manipulation lever 71, the cable 80 connected to the lower end of the manipulation lever 71 is linearly reciprocated.

An operation knob 711 is mounted on the upper end of the operation lever 71 so as to easily grip while protecting a part of the driver's body, that is, a hand, when the driver grips. The manipulation handle 711 has a predetermined elasticity and the outer surface is formed of a soft material to protect the driver's hand while improving the contact sensitivity.

In addition, the operation lever 71 is formed with a guide hole for guiding the rotation of the operation lever 71 by the driver's operation. A coupling member such as a pin fixed to the support plate 72 passes through the guide hole.

When the user manipulates the manipulation lever 71 coupled to the guide hole while the coupling member penetrates, the manipulation lever 71 rotates while the guide hole is guided by the coupling member.

The support plate 72 is formed in the shape of a square plate to have a predetermined area while having a predetermined thickness, and is fixedly mounted to a part of the work vehicle. At this time, the support plate 72 is mounted in a position where the driver can be seated in the driver's seat 32 to hold the operation handle 711.

For example, the support plate 72 is fixed to the inner space of the console box 60, the operation handle 711 formed on the upper end of the operation lever 71 is above the console box 60. It may have a configuration that is coupled to protrude.

As such, when the support plate 72 is fixed to the inner space of the console box 60, the operation lever 71 coupled with the support plate 72 is supported by the driver in the driver's seat 32. In one state, the operation knob 711 can be positioned within a range that can be operated.

Of course, the support plate 72 may be fixedly mounted at a position other than the internal space of the console box 60. Wherever the support plate 72 is located, it is preferable that the driver is fixedly mounted at a position where the driver can grip and operate the operation knob 711 in a state where the driver is seated in the driver's seat 32.

The support plate 72 and the operation lever 71 are equipped with an operation elastic member 73 for the driver to grip and operate the operation handle 711 and then to restore the operation lever 71 to its original position. .

The operation elastic member 73 is mounted in the form of a tension spring, one end is fixed to the operation lever 71, the other end is fixed to the support plate 72.

When one end portion of the operation elastic member 73 is fixed to the operation lever 71 and the support plate 72, respectively, when the user grips the operation handle 711 to operate the operation elastic member ( 73 is tensioned and has an elastic force. When the driver releases the manipulation handle 711 by the elastic force, the manipulation handle 711 is restored to its original position.

A support frame 721 is formed on the support plate 72 to support the cable 80 in combination with one end of the cable 80. The support frame 721 is bent left or right at the tip of the support plate 72 and coupled to one end of the cable 80 to support the cable 80.

The end portion of the cable 80 supported while being coupled to the support frame 721 is connected to the lower half of the operation lever 71. When the cable 80 is connected to the lower half of the operation lever 71, the driver grips the operation handle 711 to operate the operation lever 71 to perform a straight reciprocating motion.

In other words, the cable 80 is linearly reciprocated by the rotational movement of the control lever 71.

The cable 80 is configured to include a movement part for linear reciprocating motion and a cover part surrounding the motion part to prevent exposure of the motion part. The moving part is formed of a material such as steel having a predetermined strength as a certain degree of strength is required, and the cover part is a polymer resin having a certain strength while resisting moisture to prevent contamination or corrosion of the outside It is formed of a material.

Therefore, when the operation lever 71 rotates, the movement part connected to the operation lever 71 is linearly reciprocated, and the cover part can maintain a state coupled with the support frame 721. .

Such a configuration prevents friction or damage due to linear reciprocation of the moving part, and protects the moving part by the cover part, thereby increasing the service life of the cable 80.

On the other hand, the other end of the cable 80 is coupled to the coupling unit 90. The coupling unit 90 is formed in the form of a hexahedron having a predetermined internal space as a whole, the case 91 fixedly installed on the work vehicle, and rotatably mounted to the case 91 to the cable 80. ) And an interlocking portion 92 connected to each other, a latch portion 93 interlocking according to the movement of the interlocking portion 92, and an elastic portion for restoring the interlocking portion 92 and the latching portion 93 to their original state. And 94.

The case 91 is fixed to the work vehicle, and the interlocking portion 92, the latching portion 93, and the elastic portion 94 are mounted in an inner space thereof. One surface of the case 91 is cut to have a predetermined area, and a striker groove 912 is formed on the cut surface to provide a space for the striker 34 to be fixedly installed in the work vehicle.

In addition, one surface of the opposite direction of the case 91 in which the striker groove 912 is formed is cut off to have a predetermined area, and the linkage limiting part 911 in which the rotational movement of the linking part 92 is restricted by the cut out area. ) Is formed.

Looking at the case 91 in detail with reference to Figures 3 to 4, the case 91 is formed in the form of a cube having a predetermined internal space as a whole.

The rear surface of the case 91 is formed in an open shape, and the front surface and the upper surface and the lower surface are cut off while having a predetermined area. An interlocking restriction part 911 is provided on the cut-out portion of the upper surface of the case 91 to limit the rotation range of the linking portion 92. The cut-off portion of the front and lower surfaces provides an access space of the striker 34. The striker groove 912 is formed.

An upper end of the linking unit 92 is positioned on the cut-out upper surface of the case 91 in which the linking limiting unit 911 is formed, and the linking unit 92 rotates. As the upper end of the linking unit 92 moves, the range of the rotational movement is limited by the linkage limiting unit 911.

The striker groove 912 is formed from the lower surface of the case 91 to the front surface, and the striker groove 912 formed on the front surface of the case 91 when viewed from the front (in FIG. 3) is approximately "∩". While being formed in a shape, the upper end portion is formed to be positioned at the front longitudinal center portion of the case 91.

The front surface of the case 91 is formed with a guide portion 915 for guiding the rotational movement of the interlocking portion 92 and the latch portion 93. The guide part 915 is formed in an arc shape having a certain degree of curvature, and is formed to be cut to have a predetermined area.

When the guide part 915 is formed to be cut in an arc shape having a predetermined curvature while having a predetermined area, the guide part 915 protrudes from the linking part 92 and the latch part 93 to the guide part 915. The part is inserted, and the guide part 915 guides the rotational movement of the linkage part 92 and the latch part 93.

The guide part 915 is formed in the vertical direction about the interlocking rotation shaft 913 and the latch rotation shaft 914 to be described later to guide the rotational movement of the interlocking portion 92 and the latching portion 93. Done.

Therefore, there is no need to configure a separate guide or the like has the advantage that the number of parts is reduced, thereby having the advantage that the assembly and productivity is improved.

In addition, the guide part 915 is formed to protrude at least a portion toward the inner space of the case 91. This is to maintain a certain degree of flatness when the linking unit 92 and the latch unit 93 is coupled to the case 91.

Looking at this in detail, the guide portion 915 is formed in a circular arc shape having a certain degree of curvature as a whole, the edge portion is formed to protrude to have a certain length in the inner direction of the case (91).

In addition, the edge portion of the rotation shaft hole 916 to which the interlocking rotation shaft 913 and the latch rotation shaft 914 are coupled is also formed to protrude to have a predetermined length. The edge portion of the rotating shaft hole 916 is formed to protrude so as to have a predetermined length in the inner direction of the case 91 is the linkage portion 92 and the latch portion 93 to the case 91 This is to avoid contact with the inner surface of the case 91 when the rotary motion in the coupled state.

That is, the interlocking portion 92 and the latching portion 93 are not in contact with the inner surface of the case 91 by the protruding portion of the rotation shaft hole 916, so that the frictional force is reduced during the rotational movement, It is possible to have the advantage that the breakage is prevented.

As such, when the edge portion of the rotation shaft hole 916 is formed to protrude in the inward direction of the case 91 to have a predetermined length, the interlocking portion 92 and the latching portion 93 are the case 91. While coupled to, the change in the flatness may occur so that the edge portion of the guide portion 915 is formed to protrude the same or shorter than the protruding length of the rotation shaft hole 916.

When the edge portion of the guide portion 915 is formed to protrude longer than the protruding length of the rotation shaft hole 916, the contact area between the linking portion 92 and the latch portion 93 is widened, the guide portion The edge portion 915 is formed to protrude to a length shorter than the protruding length of the rotation shaft hole 916.

 As such, the edge portion of the guide part 915 is formed to protrude to have a predetermined length in the inward direction of the case 91 so that the flatness of the linkage part 92 and the latch part 93 can be maintained. To perform a function.

Of course, a configuration in which the entire edge portion of the guide portion 915 is formed to protrude in the inner direction of the case 91 may be possible, and a configuration may be formed so that a portion thereof protrudes. Therefore, the guide part 915 is formed such that at least a part thereof protrudes in the inward direction of the case 91.

The guide portion 915 formed to be symmetrical with respect to the rotation shaft hole 916 so as to maintain the flatness of the interlocking portion 92 and the latching portion 93 may be formed to protrude in the same manner. It must be formed.

In the inner space of the case 91 is coupled to the interlocking portion 92, the interlocking rotation shaft 913, which is the center of rotation of the interlocking portion 92, and the latch portion 93 is coupled to the latch portion 93 The latch rotation shaft 914 serving as the center of rotation of () is formed.

The interlocking rotation shaft 913 and the latch rotation shaft 914 are formed in a cylindrical shape having a predetermined diameter, and are formed in a shape lying down across the inner space of the case 91 in the front-rear direction.

The linkage unit 92 is formed in a plate shape having a predetermined thickness, and the side surface is formed in a curve having various curvatures. The upper end portion of the interlocking portion 92 is connected to the other end portion of the cable 80, thereby causing the interlocking rotation shaft 913 to rotate around the center of rotation by the linear reciprocating motion of the cable 80.

In addition, the upper end of the interlocking portion 92 is formed to protrude upward of the interlocking restriction portion 911. The upper end of the interlocking part 92 rotates by the linear reciprocating motion of the cable 80 while contacting the interlocking limiting part 911 while the interlocking part 92 rotates by the interlocking limiting part 911. The range of motion is limited.

Therefore, there is no need to configure a separate stopper and the like has the advantage of reducing the number of parts, thereby having the advantage that the assembly and productivity is improved.

The latch unit 93 is mounted at one side of the interlocking unit 92. The latch portion 93 is formed in a plate shape having a predetermined thickness, and the side surface thereof is formed in a curve.

One side of the latch portion 93 in detail, a coupling groove 931 for engaging with the striker 34 is formed at a side facing the linkage portion 92. The coupling groove 931 is formed in a substantially "⊃" shape as shown in Figure 4, it is formed recessed in the opposite direction of the linking portion 92 on the side facing the linking portion 92.

In addition, the upper end of the interlocking part 92 is formed with a latching jaw protruding toward the latch portion 93, and the locking jaw protruding from the front end of the upper half of the latching portion 93 is caught by the latching jaw. The striker 34 is inserted into and coupled to the coupling groove 931 to lock the coupling unit 90.

In this case, the linking unit 92 and the latch unit 93 perform rotational movements in opposite directions. That is, when the linking unit 92 rotates clockwise by the linear reciprocating motion of the cable 80, the latch unit 93 rotates counterclockwise, and the linking unit 92 Rotates counterclockwise, the latch portion 93 rotates clockwise.

As such, the linking unit 92 and the latch unit 93 are selectively engaged with the striker 34 while performing rotational movements in opposite directions. That is, in the state in which the striker 34 passing through the striker groove 912 is inserted into the coupling groove 931 formed in the latch portion 93, the latching jaw of the interlocking portion 92 and the latch are provided. By engaging the engaging projection of the part 93, the coupling unit 90 is coupled to the striker 34 is locked.

In addition, the interlocking rotation shaft 913 and the latch rotation shaft 914 is equipped with an elastic portion 94 for elastically supporting the rotational movement of the interlocking portion 92 and the latching portion 93. The elastic part is mounted on the interlocking rotation shaft 913 and the interlocking elastic portion 941 for elastically supporting the rotational movement of the linking unit 92, and the latch rotating shaft 914 is mounted on the latch portion 93 It is configured to include a latch elastic portion 942 for elastically supporting the rotational movement.

The elastic portion 94 is provided in the form of a coil spring to perform the function of restoring the original state after the rotational movement of the interlocking portion 92 and the latch portion 93.

Hereinafter, the operation of the locking and releasing device of the work vehicle according to the embodiment of the present invention will be described with reference to FIG. 6. 6 is a right side view illustrating an operation of a locking and releasing device of a work vehicle according to an exemplary embodiment of the present disclosure.

When the driver grips the operation knob 711 in the state of sitting in the driver's seat 32 and compresses it in the left direction as shown in FIG. 6, the operation lever 71 connected to the operation knob 711 is The part engaged with the support plate 72 is rotated counterclockwise with the rotation center as the center.

When the operation lever 71 rotates in the counterclockwise direction, the lower end of the operation lever 71 rotates in the counterclockwise direction, while the cable 80 to be connected is viewed in detail in the right direction in FIG. 6. Is to move the movement unit in the direction in which the operation lever 71 is located.

When the moving part moves in the direction in which the operation lever 71 is located, the linking part 92 connected to the moving part rotates counterclockwise with the interlocking rotation shaft 913 as the rotation center.

When the linking unit 92 rotates in the counterclockwise direction with the interlocking rotation shaft 913 as the center of rotation, the catching jaw rotates in the counterclockwise direction, and the locking protrusion and the engagement of the latch unit 93 are released. .

That is, when the interlocking part 92 is rotated in the counterclockwise direction, the locking projection of the latch 93 is released from the latching jaw, and thus the elasticity of the latch elastic part 942 is increased. It rotates counterclockwise.

When the latch portion 93 rotates in the counterclockwise direction, the coupling groove 931 is formed in a substantially "∩" shape, and the engagement with the striker 34 is released to release the lock.

When the user moves the striker 34 or the coupling unit 90 again while the coupling unit 90 and the striker 34 are uncoupled, the striker 34 has the striker groove 912. ) Is inserted into the coupling groove 931 of the latch portion 93.

When the striker 34 is further moved while being inserted into the coupling groove 931, the locking protrusion of the latch portion 93 is engaged with the locking jaw of the interlocking portion 92 so that the striker 34 may be moved. Will limit movement.

As a result, the striker 34 is restricted from moving to the striker groove 912 in the state in which the striker 34 is inserted into the coupling groove 931 so that the coupling unit 90 is locked.

On the other hand, when the user releases the pressing force applied after the operation of the operation lever 71, the operation lever 71 is moved to the initial position by the elasticity of the operation elastic member 73.

The description of the present invention as described above is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains various modifications without departing from the essential characteristics of the present invention. Modifications may be possible.

Locking and releasing device for a work vehicle according to the present invention is configured to enable the driver to position the operation lever in a desired position, and is connected to the cable to lock and unlock by operating the driver while seated in the driver's seat lock and release is The coupling unit is located at the required part.

Therefore, the driver has the advantage of being able to perform the locking or unlocking of the part that needs to be locked and unlocked while seated in the driver's seat, and has the advantage that the usability of the locking and unlocking device is improved.

In addition, as the number of parts of the coupling unit is reduced, the assembly and productivity are improved, and the reliability of the work vehicle is improved.

Due to such many effects, the locking and releasing device of the work vehicle according to the present invention will be highly applicable to not only the production industry of the work vehicle but also various industries related thereto.

10. Rotating body 20. Power chamber
30. Cab 31.Door
32. Driver's seat 321. Rear seat
322. Down seat 34. Striker
40. Moving object 50. Working object
51. Bucket 60. Console Box
70. Control panel 71. Control lever
711. Operation Handle 72. Support Plate
721. Support frame 73. Elastic member
80. Cable 90. Coupling unit
91. Case 911. Interlocking Limit
912. Striker home 913. Interlocking shaft
914. Latch rotating shaft 915. Guide part
916. Rotating shaft hole 92. Linkage
93. Latch section 931. Coupling groove
94. Elastic part 941. Interlocking elastic part
942. Latch elastic part

Claims (5)

An operation unit rotatably installed at a position at which the driver can operate the driver's seat;
A cable that linearly reciprocates by a motion of the operation unit; And
An interlocking part connected to the cable to rotate and a latching part interlocked according to the movement of the interlocking part are mounted. A coupling unit having a striker groove, an elastic portion for restoring the linkage portion and the latch portion, and a guide portion for guiding movement of the linkage portion and the latch portion; Locking and unlocking device for the work vehicle is configured to include. The method of claim 1,
Wherein,
An operation lever that the driver grips and operates;
An operation elastic member for restoring the operation lever to its original state by its elasticity; And
A support plate fixed to a position at which the driver is operable in the driver's seat to rotatably support the operation lever and to support the cable connected to the operation lever; Locking and unlocking device for the work vehicle is configured to include. The method of claim 1,
Locking and releasing device of the work vehicle on one surface of the case is formed with a cutout for limiting the range of motion of the linkage. The method of claim 1,
The elastic portion
And an interlocking elastic part and a latching elastic part which are supported by the rotating shaft which is the pivot center of the interlocking part and the latch part, and the elastically supporting the interlocking part and the latch part. The method of claim 1,
The guide unit locks and unlocks a work vehicle in which at least a portion protrudes in an inner direction of the case.

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