KR200370941Y1 - Door locking device for heavy equipment - Google Patents

Abstract

The design of the present invention can be easily and precisely opened and closed in spite of relatively severe self-vibration and external shocks. It is to provide a door lock device for heavy equipment.

The heavy-duty door locking device according to the present invention includes a casing including an enclosure portion recessed inward to be received inside the door and an incision groove formed therein, and a flange portion extending from an edge of the enclosure portion, and the flange portion on the door. The fastening member to be fixed, the fixed shaft installed on one side of the housing, and rotatably installed on the fixed shaft, protrudes through the cutting groove of the housing and locks and locks the door while being selectively engaged with the striker on the vehicle body according to the direction of rotation. A latch member for releasing, an opening / closing handle installed on the front side of the enclosure in a state rotatably coupled to the fixed shaft and connected to the latch member to integrally rotate the latch member, and one side supported by the enclosure and the other side to the latch member Is supported, including an elastic member that prevents the latch member and the opening / closing handle from being arbitrarily rotated in the unlocking direction. .

Description

DOOR LOCKING DEVICE FOR HEAVY EQUIPMENT}

The present invention relates to a door lock device for heavy equipment, and more particularly to a door lock device for heavy equipment that can be accurately opened and closed the door despite the relatively severe self-vibration and external shock.

In general, various doors such as cap doors, side doors, bonnet hoods, toolbox doors, etc. are hinged on heavy equipment such as excavators, loaders, forklifts, etc., and the doors are locked to the body and opened only when necessary. The door locking device is installed so as to be possible.

In the case of the door lock device for heavy equipment according to the prior art, the locking and unlocking is generally performed by rotating the handle from side to side through the combination of the latch and the handle. It is inconvenient to operate and use because the handle must be locked and unlocked by holding and rotating the handle, and if the handle is not rotated completely during operation, the locking is unstable and the door is opened arbitrarily by self-vibration or external shock. There is a problem.

In addition, when the door lock device for heavy equipment is used for a long time, the engaging portion between the handle and the latch is worn, or the fastening bolt is loosened, so that locking and unlocking due to opening and closing of the door cannot be performed properly.

In addition, since the handle protrudes to the outside of the door, there is a possibility that the handle may be damaged by an external impact as well as an aesthetic problem.

Accordingly, an object of the present invention is to provide a door lock device for heavy equipment, which allows the door to be opened and closed easily and accurately despite relatively severe self-vibration and external shock.

In addition, there is no part protruding to the outside to provide a beautiful appearance as well as to provide a heavy-duty door lock device for maintaining the assembly state is firmly durable.

1 is a state of use of the door lock device for heavy equipment according to an embodiment of the present invention.

Figure 2 is a perspective view of a door lock device for heavy equipment according to an embodiment of the present invention.

Figure 3 is an exploded assembly view of the door lock device for heavy equipment according to an embodiment of the present invention.

4a and 4b is an operation of the key portion in the door lock device for heavy equipment according to an embodiment of the present invention.

5a and 5b is an operation of the door lock device for heavy equipment according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

1: Door Locking Device for Heavy Equipment

10 casing 11: housing

12: incision groove 13: flange

14: polygon through hole 20: fastening member

30: fixed shaft 40: latch member

50: opening and closing handle 60, 80: elastic member

70: kibu 72: rotating body

73, 74: locking groove 75: locking plate

The object of the present invention described above,

A casing having an enclosure recessed inward to be received inside the door and having a cutout formed therein, and a flange portion extending from an edge of the enclosure;

Fastening member for fixing the flange portion on the door;

A fixed shaft installed at one side of the enclosure;

A latch member rotatably installed on the fixed shaft, the latch member protruding through the cutaway groove of the housing and selectively engaging the striker on the vehicle body in accordance with the rotational direction to lock and unlock the door;

An opening / closing handle installed on the front side of the enclosure in a state rotatably coupled to the fixed shaft and connected to the latch member to integrally rotate the latch member; And

One side is supported on the enclosure and the other side is supported by the latch member, it is achieved by providing a door lock device for heavy equipment comprising a; elastic member for preventing the latch member and the opening and closing handle to be rotated in the unlocking direction.

According to a preferred feature of the present invention, the above-described flange portion is formed with a polygonal through hole, the above-mentioned fastening member includes a cross-sectional portion corresponding to the shape of the polygonal through hole, so that the fastening member is formed to be freely released.

According to a more preferable feature of the present invention, the key portion for locking or unlocking the opening and closing handle with respect to the above-described casing in accordance with the insertion and rotation direction of the key, further comprising the annular casing is fixed to the opening and closing handle And a rotating body fixedly rotatable in the annular casing and integrally rotated according to insertion and rotation of the key, a first locking groove formed in the opening and closing handle, and a second formed in the enclosure so as to be coincident with the first locking groove. And a locking plate for locking or unlocking the opening / closing handle with respect to the casing as the locking groove is fixed to one end of the rotating body and integrally rotated, thereby being inserted into or separated from the locking grooves. .

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings, but the technical spirit and scope of the present invention are not limited thereto.

1 shows a state diagram of use of the door lock device 1 for heavy equipment according to the present invention.

As shown in FIG. 1, the door lock device 1 for heavy equipment is installed on a door 110 of the heavy equipment 100 such as an excavator and a loader, in particular, a side door, so that the door 110 is closed with respect to the vehicle body. As it is fixed to and can be opened only when necessary and at the same time serves to prevent the door 110 is opened and closed arbitrarily by self-vibration or external impact of the heavy equipment 100. In view of the overall shape, the heavy-duty door lock device 1 is formed with a housing 11 in the casing 10 is fixed on the door 110, rotatably fixed to one side to the housing 11 The opening and closing handle 50 covers only a part of the front side of the enclosure 11 so that the worker's hand can enter the other side of the enclosure 11 on the same plane as the flange portion 13 without protruding to the outside. It is formed, not only beautiful in appearance, but also the occurrence of the opening and closing handle 50 hit the operator does not occur.

Figure 2 shows a perspective view of the heavy-duty door locking device 1 according to the present invention, Figure 3 shows an exploded view of the heavy-duty door locking device 1 according to the present invention.

As shown in Figures 2 and 3, the heavy-duty door lock device 1 is bent to be recessed inwardly to be received inside the door 110, the cutting groove for allowing the rotation of the latch member 40 ( A casing 10 and a flange portion 12 in which a housing portion 11 in which 12 is formed and a flange portion 13 extending from an edge of the housing portion 11 and overlapping on the door 110 are integrally formed. 13 is fastened to the door 110, the fastening member 20, the fixed shaft 30 is fixed to both ends on one side of the housing portion 11 is installed vertically, and the fixed shaft 30 can be rotated And a latch member which protrudes rearward through the cutout groove 12 of the enclosure 11 and selectively locks or unlocks the door 110 while being selectively engaged with the striker 101 on the vehicle according to the rotational direction ( 40 and the housing part on the same plane as the flange part 13 while being rotatably coupled to the fixed shaft 30 ( 11 is provided to cover a portion of the front side, and is connected to the latch member 40 to open and close the handle 50 to rotate the latch member 40 integrally, one side is supported on the enclosure 11 and the latch member ( 40 is supported by the other side, and includes a resilient member 60 to prevent the latch member 40 and the opening and closing handle 50 from being arbitrarily rotated in the unlocking direction by self vibration or external impact of the heavy equipment 100. do.

Here, for example, polygonal through holes 14 such as squares are formed in the flange portion 13 of the casing 10 described above, and the polygonal through holes 14 have cross-sectional portions corresponding to the shapes thereof. By the fastening member 20 including the fastening, the fastening member 20 for fixing the casing 10 on the door 110 is prevented from being randomly released by the self-vibration or external impact of the heavy equipment 100. Therefore, the casing 10 may be firmly fixed on the door 110 in spite of the internal vibration or external shock of the heavy equipment 100.

The fastening member 20 described above has a bolt 21 having a cross section corresponding to the polygonal through hole 14 at the bottom of the head, a nut 22 coupled to the bolt 21, a bolt 21 and a nut. Spring washers 23 and flat washers (not shown) interposed between the two.

Both ends of the fixed shaft 30 is fixed to one side of the housing portion 11, the rivet head portion 31 is formed at one end to be supported on one housing portion, the other end is snap ring to be supported on the other housing ( 32) is fitted.

One end of the latch member 40 is rotatably fitted to a central portion of the fixed shaft 30, and the other end of the latch member 40 protrudes through the cutout groove 12 of the housing part 11, and the striker 101 on the vehicle body. Locking or unlocking the door 110 while being selectively engaged, the central portion is supported by the elastic member 60 so that it can not be rotated in the unlocking direction arbitrarily by self-vibration or external impact of the heavy equipment 100. . The latch member 40 is coupled to the pin 41 for interlocking with the opening and closing handle 50 is protruded.

The above-mentioned opening and closing handle 50 is rotatably fixed to both sides of the fixed shaft 30 and connected to interlock with the latch member 40 at the time of rotation in the unlocking direction, and a part of the front side of the housing part 11. Since the cover 110 is installed to cover the door 110, the door 110 may be rotated forward by inserting a hand through a portion not covered by the opening / closing handle 50. The opening / closing handle 50 includes a latch 51 caught on the pin 41 of the latch member 40 so that the latch member 40 also rotates when the door 110 is unlocked.

The above-mentioned elastic member 60 is composed of a torsion spring of the "\" shape that one side is supported on the housing 11, the other side is supported by the latch member 40, the latch member 40 is heavy equipment 100 It prevents from being rotated in the unlocking direction arbitrarily by its own vibration or external shock, and at the same time, the opening / closing handle 50 interlocked with the latch member 40 also provides an elastic force to prevent the rotation in the unlocking direction. .

In the door lock device for heavy equipment according to the present invention (1), according to the direction of insertion and rotation of the key (not shown) to lock the opening and closing handle 50 with respect to the casing 10 can not be rotated in the unlocking direction or Or, it is preferable that the key portion 70 for unlocking so that the opening and closing handle 50 can be rotated in the unlocking direction with respect to the casing (10). The key part 70 serves to protect components inside the door 110 by not opening or closing the door 110 except for a specific person.

The above-described key portion 70, the annular casing 71 is fixed on the opening and closing handle 50, and the rotating body is rotatably fixed in the annular casing 71 and rotated integrally as the key is inserted and rotated ( 72, a first locking groove 73 formed in the opening / closing handle 50, and a second locking groove formed in the enclosure 11 of the casing 10 so as to be coincident with the first locking groove 73. 74) and the opening and closing handle 50 with respect to the casing 10 in the unlocking direction as it is inserted into the locking grooves 73 and 74 matched with each other while being fixed to one end of the rotation body 72 and integrally rotated. It includes a locking plate 75 so as not to be rotated, or to allow the opening and closing handle 50 to be rotated in the unlocking direction with respect to the casing 10 as it is released from the locking grooves (73, 74).

4A and 4B are cross-sectional views taken along the line A-A 'of FIG. 2 to show the operation of the key portion 70 described above.

As shown in FIG. 4A, when the key is inserted into the rotating body 72 and rotated in the locking direction, the locking plate 75 fixed to one end of the rotating body 72 coincides with each other. And the second locking groove 74 is inserted into the casing 10 so that the opening / closing handle 50 cannot be rotated in the unlocking direction, so that the door 110 cannot be opened or closed except for a specific person.

When the opening and closing handle 50 is locked with respect to the casing 10, as shown in FIG. 4B, when the key is inserted into the rotating body 72 and rotated in the unlocking direction, one end of the rotating body 72 is rotated. The locking plate 75 fixed to the lock plate 75 is separated from the first locking groove 73 and the second locking groove 74 that match each other, so that the opening / closing handle 50 with respect to the casing 10 is rotated in the unlocking direction. By doing so, the door 110 can be opened and closed.

The opening and closing handle 50 described above is preferably independently prevented from being rotated in the unlocking direction by the other elastic member 80 by the vibration or external shock of the heavy equipment 100, the elastic member described above. 80 is composed of a torsion spring that is supported on one side of the housing 11, the other side is supported on the opening and closing handle 50, providing an elastic force in the opposite direction to the rotation of the unlocking handle 50 in the unlocking direction. do.

Hereinafter, referring to FIGS. 5A and 5B, which are cross-sectional views taken along the line BB ′ of FIG. 2, the overall operation of the door lock device 1 for heavy equipment according to the present invention will be described in detail.

As shown in FIG. 5A, in the locked state of the door 110, the latch member 40 protruding through the cutout groove 12 of the enclosure 11 is held in engagement with the striker 101 of the vehicle body. At the same time, the latch member 40 and the opening / closing handle 50 are supported by the elastic force of the elastic members 60 and 80 so as not to be rotated in the unlocking direction by the self-vibration or external impact of the heavy equipment 100.

In addition, in the locking state of the door 110, in the case of locking the opening / closing handle 50 with respect to the casing 10 through the key portion 70, the first locking groove 73 in which the locking plates 75 coincide with each other. And the second locking groove 74 is inserted so that the opening / closing handle 50 cannot be rotated in the unlocking direction with respect to the casing 10, so that the door 110 cannot be opened except for a specific person who owns the key. do.

When a specific person owning the key inserts the key into the pivot body 72 and rotates it in the unlocking direction, the locking plate 75 is separated from the first locking groove 73 and the second locking groove 74 that coincide with each other. Thus, the opening / closing handle 50 with respect to the casing 10 can be rotated in the unlocking direction.

In this state, when the hand is pushed through the part of the enclosure 11 not covered by the opening / closing handle 50 to rotate the opening / closing handle 50 to the front (locking release direction), the latch of the opening / closing handle 50 Since the 51 pulls the pin 41 coupled to the latch member 40, the latch member 40 is rotated together with the opening / closing handle 50 so that the engagement with the striker 101 is released, thus FIG. 5B. As shown in the door 110 can be opened.

As described above, according to the door lock device for heavy equipment according to the present invention described above, the latch member and the opening and closing handle can be prevented from being arbitrarily rotated in the open direction by the elastic member in spite of comparatively severe self-vibration and external shock. There is a simple opening and closing operation of the door can be made accurately.

In addition, since the opening and closing handle is held on the front side of the enclosure without protruding to the outside, the appearance is advantageous.

In addition, as the casing is fixed to the heavy-duty vehicle body by a polygonal through hole and a corresponding fastening member, there is an advantage that it can be firmly fixed on the door despite relatively severe self-vibration and external impact.

Claims (3)

A casing having an enclosure recessed inward to be received inside the door and having a cutout formed therein, and a flange portion extending from an edge of the enclosure; Fastening member for fixing the flange portion on the door; A fixed shaft installed at one side of the enclosure; A latch member rotatably installed on the fixed shaft, the latch member protruding through the cutaway groove of the enclosure and selectively engaging the striker on the vehicle body in accordance with the rotation direction to lock and unlock the door; An opening / closing handle installed on the front side of the enclosure in a state rotatably coupled to the fixed shaft and connected to the latch member to integrally rotate the latch member; And And an elastic member for supporting one side of the enclosure and the other side of the latch member to prevent the latch member and the opening / closing handle from being randomly rotated in the unlocking direction. The method of claim 1, Polygon through-holes are formed in the flange portion, and the fastening member includes a cross-sectional portion corresponding to the shape of the polygon through-hole, and the fastening member is formed so as not to be released freely. The method according to claim 1 or 2, Further comprising a key for locking or unlocking the opening and closing handle with respect to the casing in accordance with the direction of insertion and rotation of the key, The key portion may include an annular casing fixed to the opening and closing handle, a rotatable body rotatably fixed in the annular casing and pivoting integrally upon insertion and rotation of the key, and a first locking groove formed on the opening and closing handle; A second locking groove formed in the enclosure so as to be matched with the first locking groove, and fixedly fixed to one end of the rotating body and integrally rotated, and inserted into the locking grooves coinciding with each other or being separated from the locking grooves. As it is, the door lock device for heavy equipment, characterized in that it comprises a locking plate for locking or unlocking the opening and closing handle with respect to the casing.