KR200342326Y1 - A door locking apparatus of heavy machinery - Google Patents

Abstract

The present invention is firmly supported to maintain the rotation angle according to locking / unlocking of the latch plate, minimizes the impact and abrasion of the device, prevents corrosion and prevents the device from running smoothly by riveting the components. The present invention relates to a cab door locking device for a heavy-duty vehicle that improves productivity and maximizes lifespan.

The present invention for realizing this, in the door lock device of a heavy-duty vehicle comprising a latch plate and a lever for locking / unlocking the striker (2), the striker removal groove (11) is formed on one side and on the outer side A latch plate 10 having a stop bent jaw 13 formed therein, a latch claw 20 for attaching and detaching to a stop bent jaw 13 of the latch plate 10, and integrally coupled to the latch claw 20. Lever 1 (41), lever 2 (42) for angular movement by lifting one side of the lever (1 41), and lever (3) hinged to the housing for lifting and lowering the lever (2) 42 ( 43)), a lever 4 (44) coupled to the hinge shaft 45 of the lever 3 (43) to operate the lever 3, and a guide (47) for vertically guiding the lifting motion of the lever (2 42). And springs respectively installed on the latch plate 10, the latch claw 20, and the hinge shaft 45 of the lever 3 43. It characterized in that it comprises a housing 50 consisting of a bracket 1 (51) and bracket 2 (52) for supporting the components, the components are plated, the coupling of the housing 50 Each fixed coupling part fixed to the housing 50 is to be riveted.

Description

Cab door locking device for heavy-duty vehicles {A DOOR LOCKING APPARATUS OF HEAVY MACHINERY}

The present invention relates to a cab door locking device of a heavy-duty vehicle, in particular, the rotation angle maintenance according to the locking / unlocking of the latch plate is firmly supported, the impact of the device generated during the locking operation and the wear of the striker is minimized Corrosion-resistant plating and the combination of riveting prevents corrosion and ensures smooth operation of the device, eliminating the welding and painting processes involved in the prior art to improve productivity and maximize the service life of the cab door locking device It is about.

In general, the cab door locking device of a heavy-duty vehicle such as an industrial vehicle or an excavator is firmly locked or released against strong vibrations, and is required to have high abrasion resistance, such as a striker and a door installed in the vehicle body. And a lock plate mounted on the side and held by a spring for locking and releasing the striker and a lever device for angular movement of the lock plate.

However, in the prior art, there is a risk that the locking state is not released due to the nature of the heavy equipment with a strong locking structure, and the locking structure is inadequate, and the coupling between the components is inevitably followed by corrosion. In order to prevent corrosion of the welding part, the electrodeposition coating is performed to paint the whole device at the same time when the assembly is completed, so that the operation part is fixed by the paint and the locking / release operation is not performed smoothly. There are various problems such as the addition of a coating process to lower productivity.

The present invention has been devised to solve the above problems,

An object of the present invention is to provide a cab door locking device for a heavy-duty vehicle to maintain the rotation angle according to the locking / unlocking of the latch plate and to minimize the impact of the device and the wear of the striker.

Another object of the present invention is that the components are rust preventive plated and the combination is made of riveting to prevent corrosion and to operate the device smoothly, eliminating the welding and painting processes that have been involved in the prior art, thereby improving productivity and maximizing service life. To provide a cab door locking device for a heavy-duty vehicle.

1 is a front side perspective view of an embodiment according to the present invention

2 is a rear side perspective view of FIG.

3 is a plan view of FIG.

FIG. 4A is a cross-sectional view taken along the line A-A of FIG. 3, and FIG. 4B is a locked state diagram of FIG.

FIG. 5 is a cross-sectional view taken along the line B-B in FIG. 4B

FIG. 6 is a C view of FIG. 3. FIG.

Figure 7 is an installation state of Figure 1

* Explanation of symbols for the main parts of the drawings

1: Cab door locking device for heavy duty vehicle of the present invention

2: striker 3: fuselage

4: door 10: latch plate

11: Striker Insertion 13: Detent Bend

13a: open support jaw 13b: locking support jaw

15: axis 17: torsion spring

20: Latch Claw 21: Shaft

27: torsion spring 41: lever 1

42: lever 2 43: lever 3

44: lever 4 45: hinge shaft

50: housing 70: buffer member

80: Return Guide 90: Rivet

Cab door locking device for a heavy-duty vehicle according to the present invention to achieve the above object,

In the door lock of the heavy-duty vehicle comprising a latch plate and a lever for locking / unlocking the striker,

A latch plate having a striker insertion groove formed on one side and a stop bent jaw formed on an outer side thereof, a latch claw for attaching and detaching to a stop bent jaw of the latch plate, a lever 1 integrally coupled to the latch claw, and the lever 1 A lever 2 for angular movement by lifting one side of the lever, a lever 3 hinged to the housing for lifting and lowering the lever 2, a lever 4 coupled to the hinge axis of the lever 3, and a lever 4 for operating the lever 3; A housing comprising a guide for vertically guiding the lifting and lowering movement of the lever 2, springs respectively installed on the latch plate, the latch claw, and the hinge shaft of the lever 3, and a bracket 1 and a bracket 2 for supporting the components. Characterized in that configured to include.

Each of the components is plated, and the coupling of the housing consisting of the bracket 1 and the bracket 2 and each of the fixed coupling portions fixed to the housing are preferably riveted.

Hereinafter, an embodiment of a cab door locking device for a heavy-duty vehicle of the present invention will be described in more detail with reference to the accompanying drawings.

1 is a front perspective view showing the configuration of a cab door locking device 1 of a heavy-duty vehicle according to an embodiment of the present invention, FIG. 2 is a rear perspective view of FIG. 1, FIG. 3 is a plan view of FIG. FIG. a is a cross-sectional view taken along the line AA of FIG. 3, b is a locked state diagram of FIG. a, FIG. 5 is a cross-sectional view taken along the line BB of FIG. 4b, and FIG.

1 to 6, the cab door locking device 1 of the heavy-duty vehicle according to the present invention, comprises a latch plate and a lever for locking / unlocking the striker 2,

A latch plate 10 having a striker insertion groove 11 formed at one side and a stop bent jaw 13 formed at an outer side thereof, and a latch claw 20 for being detached from the stop bent jaw 13 of the latch plate 10. ), A lever 1 (41) integrally coupled to the latch claw 20, a lever 2 (42) for angular movement by lifting one side of the lever 1 (41), and the lever 2 (42). Lever 3 (43) hinged to the housing to move up and down), the lever 4 (44) coupled to the hinge shaft (45) of the lever 3 (43) to operate the lever 3 (43), Springs are provided on the guide 47 for vertically guiding the lifting movement of the lever 2 (42), the latch plate 10, the latch claw 20, the hinge shaft 45 of the lever 3 (43), respectively. And, it comprises a housing 50 consisting of a bracket 1 (51) and the bracket 2 (52) for supporting the components.

The latch plate 10 is a stop bent jaw 13 is formed with an open support jaw (13a) and a locking support jaw (13b), the shaft 15 is integrally formed, is inserted into the shaft (15) and one end is latched Plate 10, the other end is provided with a torsion spring 17 fixed to the housing.

The latch claw 20 coupled to the stop bent jaw 13 of the latch plate 10 is coupled to the end of the shaft 21 integrally formed so that the lever 1 41 is operated integrally. In the latch claw 20, the other end is provided with a torsion spring 27 fixed to the housing 50.

The lever 1 (41) is coupled to the shaft 21 of the latch claw 20 is biased to one side, the other side is received by the lever 2 (42) to the angular movement.

The lever 2 42 for vertically raising and lowering the lever 1 41 has a guide hole 42a for being vertically slid into the guide 47 at an upper portion thereof and a lower portion for connecting with the lever 3 43 at a lower portion thereof. The coupling hole 42b is formed.

In addition, the lever 3 (43) is formed in a substantially crank form, a protrusion 43a is inserted into one end of the coupling hole (42b) of the lever 2 (42) is formed to be connected to the operation handle on the other end A through hole 43b is formed, and one end of the torsion spring 43c fixed to the protrusion 43a and the other end to the housing 50 is preferably installed on the hinge shaft 45.

The manipulation handle connected to the through hole 43b may be connected to the manipulation handle installed on the outside or the inside of the door by a wire or the like.

The lever 4 (44) is for the operation handle which is installed on the opposite side of the operation handle connected to the lever 3, is installed on the hinge shaft 45 of the lever 3 (43), the lever 3 (43) A protruding protrusion 43a is formed at one end and a through hole 44b is formed at the other end to be connected to a manipulation handle and a wire.

The levers 1, 2, 3, and 4 (41, 42, 43, 44) may be refracted by using a plate body.

In addition, the respective members are rust-proof plating treatment to prevent corrosion, the coupling of the housing 50 consisting of the bracket 1 (51) and bracket 2 (52) and each fixed coupling portion fixed to the housing 50 It is preferred to be riveted. Reference numeral 53 is a screw hole for fixing to the door.

One side of the latch plate 10 is preferably a buffer member 70 for guiding and buffering the insertion and removal of the striker (2) installed in the body.

The buffer member 70 is formed of a resin material, the guide groove 71 is gradually formed to be inclined to guide the insertion and removal of the striker (2) and a rubber buffer 73 is formed at the rear of the latch plate which is the end of the groove. It is preferred to be installed.

In addition, it is preferable that the return guide 80 having a spring 81 is further provided below the latch plate 10.

It looks at the operating state of the cab door locking device (1) of the heavy-duty vehicle according to the present invention having such a configuration.

As schematically shown in FIG. 7, when the door is closed by being installed at one corner of the door, the striker 2 installed on the fuselage rotates while hitting the latch plate 10 to face the striker insertion groove 11. The inlet of is rotated vertically downward to lock the striker 2 (see also FIG. 4 b).

At the same time, the latch claw 20 is moved from the open support jaw 13a to the locking support jaw 13b of the stop bending jaw 13 of the latch plate 10 by the rotation of the latch plate to maintain the locking state of the latch plate. Let's do it.

This locking state is firmly maintained by the lever 3 (43) where rotation is prevented unless external force is applied by the latch claws 20 and the torsion springs 43c carried by the torsion springs 27. do.

To release the lock in such a locked state, press the operation handle connected to the lever 3 (43) and the lever (43) is rotated while the protrusion 43a formed at its end pushes up the lever (2 42). In this case, the lever 2 42 functions as a lever for pushing up one side of the lever 1 41 while vertically rising by taking the guide 47 from the guide hole 42a formed in the upper portion. Accordingly, the lever 1 41 is rotated and at the same time, the latch claw 20 which is operated in one body with the lever 1 is rotated while tensioning the torsion spring 27 to be released from the locking support jaw 13b of the latch plate. At this time, the latch plate 10 is rotated in the direction in which the lock spring is released by the torsion spring 17 so that the striker 2 can be removed by opening the striker insertion groove 11.

The return guide 80 pushes the release operation of the latch plate 10 by its spring 81.

In addition, when pressing the other operation handle installed in the opposite direction to the operation handle connected to the lever 3, the lever 44 (44) formed at one end thereof rotates the lever 3 (43), as the lever 4 (44) is rotated, According to the rotation of the lever 3 (43), the above-described series of release operations are performed.

The configuration according to the present invention having such a lock / release function is made to be organically interlocked with each other by a plurality of levers and torsion springs so that the rotation angle maintenance according to the lock / release of the latch plate 10 is firmly supported. There is no fear that the locking will be released even after strong vibration.

In addition, since the shock absorbing member 70 is provided to minimize the impact of the device generated during the locking operation and the wear of the striker, the rubber buffer 73 during the locking operation that the latch plate 10 is impinged on the housing 50 prevent. .

On the other hand, all the members except for the buffer member 70 and the return guide 80 is rust-proof plated and the combination is fastened by using the rivet 90 to prevent corrosion and to operate the device smoothly, to maximize the life .

In the above, preferred embodiments of the present invention have been described with reference to the accompanying drawings. Here, the terms or words used in the present specification and claims should not be construed as being limited to ordinary or dictionary meanings, but should be construed as meanings and concepts corresponding to the technical spirit of the present invention. Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical ideas of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

As described in detail above, the cab door locking device for a heavy-duty vehicle according to the present invention,

Rotational angle maintenance according to locking / unlocking of the latch plate is firmly supported, and there is no fear that the locking is released even in the strong vibration of the body, and the shock absorbing member is provided to minimize the impact of the device and the wear of the striker.

In addition, all the members except for the buffer member and the return guide are rust-proof plated and the combination is made of riveting to prevent corrosion and to operate the device smoothly, and to eliminate productivity of the welding and painting processes involved in the prior art, thereby improving productivity. It is a technology that has the advantage of maximizing the lifetime.

Claims (7)

In the door lock device of a heavy-duty vehicle comprising a latch plate and a lever for locking / unlocking the striker (2), A latch plate 10 having a striker insertion groove 11 formed at one side and a stop bent jaw 13 formed at an outer side thereof, and a latch claw 20 for being detached from the stop bent jaw 13 of the latch plate 10. ), A lever 1 (41) integrally coupled to the latch claw 20, a lever 2 (42) for angular movement by lifting one side of the lever 1 (41), and the lever 2 (42). Lever 3 (43) hinged to the housing to move up and down), a lever (4) 44 coupled to the hinge shaft (45) of the lever (3) 43 to operate the lever 3, and the lever (2). A guide 47 for vertically guiding the lifting and lowering motion of the 42, springs respectively installed on the latch plate 10, the latch claw 20, and the hinge shaft 45 of the lever 3 43, and the Cab door lock of a heavy-duty vehicle, characterized in that it comprises a housing 50 consisting of the bracket 1 (51) and bracket 2 (52) for supporting the components Device. The method of claim 1, And each of the components is plated. The method according to claim 1 or 2, Coupling of the housing 50 consisting of the bracket 1 (51) and the bracket 2 (52) and each fixed coupling portion fixed to the housing 50 is riveted to the cab door locking device of the heavy-duty vehicle, characterized in that The method of claim 1, The lever 2 (42) is formed in the upper guide hole (42a) to be inserted into the guide 47 to slide vertically, the lower portion is formed with a coupling hole (42b) for connecting with the lever 3, The lever 3 (43) is formed in a substantially crank shape, and a protrusion 43a is inserted into one end of the coupling hole 42b of the lever 2 42, and a through hole for connecting to the operation handle at the other end ( 43b) is formed, a torsion spring (43c) is fixed on the hinge shaft 45, the other end is fixed to the projection (43a) and the housing 50 is installed on the hinge shaft (45). The method of claim 1, One side of the latch plate 10 is a cab door locking device for a heavy-duty vehicle, characterized in that the shock absorbing member 70 for guiding and buffering the insertion and removal of the striker (2) is installed. The method of claim 5, The shock absorbing member (70) is formed with a guide groove which is gradually narrowed, the door lock device of the cab of the heavy-duty vehicle, characterized in that the rubber buffer member 73 is installed behind the latch plate, the end of the groove. The method of claim 1, Under the latch plate 10, the cab door locking device for a heavy-duty vehicle, characterized in that the return guide 80 is further provided with a spring (81).