KR101154938B1 - Locking apparatus for checking door of railway vehicle - Google Patents

Abstract

The present invention relates to a locking device for an inspection door of a railway vehicle, which has a cylindrical shaft shape, and fixing grooves and locking grooves are spaced apart from each other at predetermined unit angles when viewed from a plane on the outer circumferential surface of one end and the other end thereof. A feed shaft formed at one end thereof and installed at an inspection door for opening and closing an inspection door of the railway vehicle; An insertion hole in which the transfer shaft is inserted is formed, the body having an empty case shape, and the insertion hole being installed in the inspection port so as to correspond to the transfer shaft; It has a hollow shape to surround the outer circumferential surface of the feed shaft inserted into the insertion hole, and is reciprocated in the interior of the body, the installation hole corresponding to the fixed groove or the locking groove is formed as it is conveyed and rotated about the feed shaft A holder having first and second rotation guide teeth formed on the upper and lower ends thereof inclined in opposite directions; A fixing body provided inside the installation hole and selectively inserted into the fixing groove or the locking groove to fix the feed shaft to the holder; And third and fourth rotations respectively provided at both ends of the inside of the body and sequentially engaging the first and second rotation guide teeth according to the transfer of the holder to guide the holder to be rotated by the unit angle in the reciprocating transfer. And first and second latches each having guide teeth.
According to the present invention, as the feed shaft installed in the inspection door is inserted into the insertion hole of the body, while the fixed body is sequentially inserted into or removed from the fixed groove and the locking groove of the feed shaft, the feed shaft is inserted into the insertion hole of the body mostly. Alternatively, only the end is fixed in the inserted form or released to be released from the insertion hole, so that not only the check door can be realized in the closed state and the fully open state but also slightly open state, and these stepped states are repeatedly transported. Since the shaft 100 is implemented sequentially through a simple operation of pressing the inspection door to the inspection port side, its operation is also very easy.

Description

Locking apparatus for checking door of railway vehicle

The present invention relates to a locking device for an inspection door of a railway vehicle, and more particularly, the inspection door can be implemented in a slightly open state as well as a closed state or a completely open state, and is made compact in a small volume, and a method of operation and installation thereof. The present invention relates to a lock for an inspection door of a railway vehicle, which is not only very simple and easy, but also has excellent appearance quality.

In general, railway vehicles are provided with various check-points for checking the devices inside and carrying out maintenance work in various places such as the ceiling of the cabin, blocking passenger tentacles for the internal devices, preventing the inflow of foreign substances, In order to prevent deterioration of appearance quality due to the inspection door is provided to selectively open and close the inspection port.

In addition, these inspection doors and inspection doors are usually fixed with the inspection doors closed with the inspection doors, and when the inspection work or maintenance work is carried out, the locking device for the inspection door of the railway vehicle which releases the fixing.

Conventional railway vehicle inspection door locks are made of a widely used form including a locking ring installed on the inspection door and the locking fasteners are fastened or separated from the lock ring and installed in the inspection door.

On the other hand, there is a case that the above-mentioned inspection door needs to maintain a slightly open state by opening a predetermined degree depending on the type of inspection work or maintenance work. There is a problem that can be implemented only in a fully closed state in which the inspection door is completely opened because the fixed state of the closed state and the inspection door are released.

In order to solve this problem and implement a slightly open state, prepare a string member made of a chain, etc., and install one end thereof in one of the inspection or inspection doors, and fix the other end of the inspection or inspection doors by hanging the other end thereof. Although a method of installing a hook can be devised, this method has a problem in that the installation is cumbersome because the string member and the hook are separately installed in the check hole and the check door separately from the clamp and the lock ring.

In addition, in order to realize a fully open state and a slightly open state, in addition to the operation of releasing the clamp to the locking ring, the other end of the string member needs to be hooked to or released from the hook. There are cumbersome disadvantages.

In addition, although the string member and the hook are not used in the fully open state and the closed state, there is a problem that the appearance quality is deteriorated because the string member is exposed in a stretched shape.

In order to solve the problems as described above, the present invention can be implemented to adjust the fixing position of the rod-shaped or axial member installed in the inspection door to the body installed in the inspection opening through a very simple operation method, such that the fixing is released. Even if it has a function of adjusting the fixed position can be implemented in a small volume and to provide a lock for the inspection door of the railway vehicle easy to install.

In order to solve the problems as described above, the locking device for the inspection door of the railway vehicle according to the present invention has a cylindrical shaft shape, the outer peripheral surface of one end and the other end of each other at a predetermined unit angle when viewed in a plane A feed shaft having a fixing groove and a locking groove spaced apart from each other, and one end of which is installed at an inspection door for opening and closing an inspection door of the railway vehicle; An insertion hole in which the transfer shaft is inserted is formed, the body having an empty case shape, and the insertion hole being installed in the inspection port so as to correspond to the transfer shaft; It has a hollow shape to surround the outer circumferential surface of the feed shaft inserted into the insertion hole, and is reciprocated in the interior of the body, the installation hole corresponding to the fixed groove or the locking groove is formed as it is conveyed and rotated about the feed shaft A holder having first and second rotation guide teeth formed on the upper and lower ends thereof inclined in opposite directions; A fixing body provided inside the installation hole and selectively inserted into the fixing groove or the locking groove to fix the feed shaft to the holder; And third and fourth rotations respectively provided at both ends of the inside of the body and sequentially engaging the first and second rotation guide teeth according to the transfer of the holder to guide the holder to be rotated by the unit angle in the reciprocating transfer. And first and second latches each having guide teeth.

The lock device for the inspection door of the railway vehicle is coupled to the holder so as to be interposed between the outer peripheral surface of the feed shaft and the inner peripheral surface of the holder inserted into the insertion hole, in communication with the installation hole and inclined to guide the insertion position of the fixture. It may further include a secondary holder formed with a guide hole having an inner peripheral surface.

The body includes a plurality of fixing holes formed to correspond to the position of the installation hole according to the rotation of the holder, the fixing body is inserted into the fixing hole while being separated from the fixing groove or the locking groove the holder It may be provided to fix to the body.

Locking device for the inspection door of the railway vehicle, an elastic body for applying an elastic force to the holder in the opposite direction with respect to the direction in which the feed shaft is inserted into the insertion hole; may further include.

The body may include a through hole formed to face the insertion hole so that the feed shaft inserted into the insertion hole passes.

According to the locking device for the inspection door of the railway vehicle according to the present invention, the holder is reciprocated in the body as the feed shaft provided in the inspection door is inserted into the insertion hole of the body, and the holder is first, second, third, and the like. As the fourth rotation guide teeth are sequentially rotated by the unit angle, as the fixing body is sequentially inserted into or detached from the fixing groove and the locking groove of the feed shaft, only the shape or the end portion of which the feed shaft is mostly inserted into the insertion hole of the body It may be fixed in an inserted form or released to be detached from the insertion hole.

Therefore, as the fixing body is inserted into the fixing groove of the feed shaft, the closed state of the inspection door fixed with the feed shaft inserted mostly in the insertion hole of the body, and the feed shaft is not inserted into the fixing groove and the locking groove, so the feed shaft is In addition to the fully open state of the check door detached from the insertion hole, as the fixing body is inserted into the locking groove of the feed shaft can be implemented a slightly open state in which the feed shaft is fixed only in the state inserted into the insertion hole.

The closed state, the slightly open state, and the fully open state of the check door include a holder reciprocally conveyed by the insertion force of the feed shaft and the elastic force of the elastic body, and the first rotation of the holder sequentially by unit angle when the holder is reciprocally conveyed. The second, third, and fourth rotation guide teeth can be implemented by a simple operation of repeatedly inserting the feed shaft deeply into the insertion hole, that is, by simply pressing the check door with the feed shaft repeatedly installed to the inspection port side.

In addition, the lock device for the inspection door of the railway vehicle of the present invention can be implemented in a small volume by compactly installed in the interior of the small body having the above-described components having a hollow case shape is less limited by its installation space Rather, it is very easy to install because the installation is completed by fixing the feed shaft and the body to correspond to each other in the inspection door and the inspection opening.

In addition, compared to the conventional method using a string member such as a chain, there is an advantage that the appearance quality is excellent, because no separate members for implementing a slightly open state is installed.

1 is a partial cutaway cross-sectional view showing a locking device for an inspection door of a railway vehicle according to an embodiment of the present invention,
2 is a cross-sectional view of AA shown in FIG.
3a to 3e is a schematic view for explaining the operation of rotating the 30 ° increments as the holder, the auxiliary holder and the fixed body in the lock for the inspection door of the railway vehicle according to an embodiment of the present invention,
4a to 4g is a view for explaining the operation to make the inspection door locking device of the railway vehicle in a slightly open state in the closed state, according to a preferred embodiment of the present invention,
5a to 5g is a view for explaining the operation of the lock door for the inspection door of the railway vehicle according to an embodiment of the present invention to be in a fully open state from a slightly open state,
6A to 6G are views for explaining an operation of causing the inspection door locking device of the railway vehicle to be in a closed state in a fully opened state according to a preferred embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art to which the present invention pertains (hereinafter, referred to as a person skilled in the art) may easily perform the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Locking device for the inspection door of the railway vehicle according to the present invention, is installed in the inspection door formed at various locations, such as the ceiling of the room and the inspection door to selectively open and close the inspection door to check the device inside or to carry out maintenance work, It is a locking device that can be implemented with easy operation as well as a closed state and a fully open state for the inspection door.

Hereinafter, with reference to the accompanying Figures 1 to 3E, it will be described in detail the configuration and effect of the lock for the inspection door of the railway vehicle according to an embodiment of the present invention.

Locking device for the inspection door of the railway vehicle according to a preferred embodiment of the present invention, the feed shaft 100, the body 200, the holder 300, the fixed body 400, the auxiliary holder 500, the first latch 600 ), The second latch 700 and the elastic body 800.

The feed shaft 100 is a component installed in the inspection door for opening and closing the inspection door of the railroad vehicle, has a cylindrical shaft shape, the outer peripheral surface of one end of the pair of fixing grooves 110 when viewed from the plane 180 It is formed to be equal to each other at intervals and a pair of locking grooves 120 are formed on the outer circumferential surface of the other end so as to be spaced apart from each other at a predetermined angle of 60 ° and a pair of fixing grooves 110 when viewed in a plane.

Therefore, the pair of locking grooves 120 are also formed to be equal to each other at 180 ° intervals, like the fixing groove 110. One end of the feed shaft 100 is installed in the inspection door.

In a preferred embodiment of the present invention, the fixing groove 110 and the locking groove 120 is formed in a pair to be equal to each other, but is not limited to this may be formed spaced apart from each other at 60 ° unit angle.

The body 200 is a component installed in the inspection port corresponding to the feed shaft 100, as shown in Figure 1, the inner cylinder is provided in the case shape of the hollow is inserted into the feed shaft 100 at one end The insertion hole 210 is formed, and at the other end, a through hole 220 is formed to pass through the feed shaft 100 inserted into the insertion hole 210.

That is, the body 200 is provided so as to surround the center of the feed shaft 100 when the feed shaft 100 is inserted into the insertion hole 210 to penetrate the through hole 220, the holder (to be described later) 300, the fixing member 400, the auxiliary holder 500, the first and second latches 600 and 700 and the elastic body is provided.

In the locking device for the inspection door of the railway vehicle according to a preferred embodiment of the present invention, the body 200 is implemented so that the insertion hole 210 and the through-hole 220 is formed, but is not limited to this, the feed shaft 100 The other end of the feed shaft 100 inserted into the insertion hole 210 may be implemented to be positioned in the body 200 by being provided with a long length corresponding to the insertion hole 210.

The holder 300 has a hollow shape so as to surround the outer circumferential surface of the feed shaft 100 inserted into the insertion hole 210, and the force or elastic body 800 in which the feed shaft 100 is inserted into or removed from the insertion hole 210. It is provided to be reciprocated in the longitudinal direction of the body 200 by the elastic force of the inside of the body 200.

In addition, the holder 300 has an installation hole 310 formed to correspond to the fixing groove 110 or the locking groove 120 as the holder 300 is conveyed and rotated with respect to the feed shaft 100 by the reciprocating movement. As shown in FIG. 3, the holder 300 is rotated relative to the feed shaft 100 by reciprocating movement of the holder 300 in engagement with the third and fourth rotation guide teeth 610 and 710 which will be described later. First and second rotary guide teeth 320 and 330 formed to be inclined in opposite directions to each other are formed at upper and lower ends thereof.

Looking at the action of the holder 300 is rotated about the feed shaft 100 by the reciprocating movement of the holder 300 in more detail with reference to Figures 3a to 3e, first, as shown in Figure 3a, the holder In the state in which 300 is transferred to the insertion hole 210 side, the second rotary guide tooth 330 is engaged with the fourth rotary guide tooth 710 of the second latch 700.

In this state, as shown in FIG. 3B, when the feed shaft 100 is inserted into the insertion hole 210 and the holder 300 is transferred to the through-hole 220, the second rotating guide tooth that is engaged is engaged. The 330 and the fourth rotary guide tooth 710 are separated, and the first rotary guide tooth 320 is in contact with the third rotary guide tooth 610 of the first latch 600.

Here, when the holder 300 continues to receive the conveying force toward the through hole 220 side, the first rotary guide tooth 320 is pressed toward the third rotary guide tooth 610, where the first rotary guide tooth 320 and Since the third rotary guide tooth 610 is formed to be inclined in one direction, as shown in FIG. 3C, the first rotary guide tooth 320 is formed with respect to the third rotary guide tooth 610 while the inclined surfaces slide to each other. Holder 300 is rotated counterclockwise.

At this time, one tooth formed in the first rotary guide tooth 320 and the third rotary guide tooth 610 is formed in a size corresponding to 30 ° which is half of the above-described unit angle when the holder 300 is viewed in a plan view. In FIG. 3C, the rotation angle of the holder 300 is 30 °.

On the other hand, as shown in Figure 3d, when the holder 300 is transferred to the insertion hole 210 by the force of the transfer shaft 100 is separated from the insertion hole 210 or the elastic force of the elastic body 800, the engagement The first rotary guide tooth 320 and the third rotary guide tooth 610 are separated, and the second rotary guide tooth 330 is in contact with the fourth rotary guide tooth 710 of the second latch 700.

At this time, when the holder 300 continues to receive the feed force to the insertion hole 210 side, the second rotary guide tooth 330 is pressed to the fourth rotary guide tooth 710 side, wherein the second rotary guide tooth 330 and The fourth rotary guide tooth 710 is formed to be inclined in a direction opposite to the above-described one direction, as shown in Figure 3d, the inclined surface is sliding with each other while the second rotary guide tooth 710 with respect to the fourth rotary guide tooth 710 The holder 300 on which the 320 is formed is rotated in the same counterclockwise direction as in FIG. 3C.

Here, one tooth formed in the second rotary guide tooth 330 and the fourth rotary guide tooth 710 is formed in a size corresponding to 30 ° that is half of the above-described unit angle when the holder 300 is viewed in a plane. In FIG. 3E, the rotation angle of the holder 300 is 30 °.

On the other hand, the first rotary guide tooth 320 and the second rotary guide tooth 330 and the third rotary guide tooth 610 and the fourth rotary guide tooth 710 are inclined in opposite directions to each other, the holder 300 Is rotated according to the right hand rule with respect to the direction of the feed force when conveyed to the through-hole 220 side, and rotated according to the left hand rule with respect to the direction of the feed force when the holder 300 is conveyed to the insertion hole 210, thereby maintaining the holder ( 300 will always rotate in the same direction.

Therefore, as the holder 300 is reciprocated once to the insertion hole 210 side and the through hole 220 side, the angle at which the holder 300 rotates becomes 60 °, which is the aforementioned unit angle.

Therefore, the installation hole 310 formed in the holder 300 is rotated by 60 ° of unit angle with respect to the feed shaft 100 as the holder 300 is reciprocated once, and is spaced apart from the unit angle of 60 °. Corresponding to the fixing groove 110 and the locking groove 120 in order.

In other words, when the holder 300 is reciprocated once in the state where the installation hole 310 and the fixing groove 110 correspond to each other, the installation hole 310 is rotated by 60 ° with respect to the feed shaft 100. ) And the locking groove 120 corresponds, and when the holder 300 is reciprocated once again, the holder 300 is rotated by 60 ° with respect to the feed shaft 100 while the installation hole 310 is fixed groove 110. And the locking groove 120 does not correspond to any one, but corresponds to the outer circumferential surface of the feed shaft 100 spaced 60 ° from the locking groove 120.

In this case, when the holder 300 is reciprocated once again, the holder 300 is rotated again by 60 ° with respect to the feed shaft 100, and the installation hole 310 is spaced 180 ° with respect to the first fixing groove 110. Corresponds to the other fixing groove 110 formed evenly.

The fixing member 400 is made of a member having a spherical shape, more specifically, a steel ball having sufficient durability, and is provided in the mounting hole 310 of the holder 300, and the mounting hole 310 is fixed in the fixing groove 110. ) Or when it is located corresponding to the locking groove 120, a part of the guide groove 510 of the auxiliary holder 500 to be described later in the fixing groove 110 or the locking groove 120 of the feed shaft 100 By being inserted, serves to selectively couple the feed shaft 100, the holder 300 and the auxiliary holder 500.

In addition, when the installation hole 310 is located to correspond to the fixing hole 230 formed in the body 200, a part of the fixing body 400 is inserted into the fixing hole 230, the body 200, It selectively serves to couple the holder 300 and the auxiliary holder 500.

The auxiliary holder 500 is coupled to the holder 300 so as to be interposed on the outer circumferential surface of the feed shaft 100 inserted into the insertion hole 210 and the inner circumferential surface of the holder 300, and communicates with the installation hole 310 and is inclined. A guide hole 510 having an inner circumferential surface is formed.

The guide hole 510 is fixed when the fixing body 400 is inserted into the fixing groove 110 or the locking groove 120 of the feed shaft 100, the inner peripheral surface thereof is in contact with the outer peripheral surface of the fixing body 400 It serves to guide the insertion position of 400.

In addition, the auxiliary holder 500 is provided with a length excluding the lengths of the first and second rotation guide teeth 320 and 330 of the holder 300 and is coupled to the inner circumferential surface of the holder 300, as shown in FIG. 1. Likewise, both ends form an annular end 520 when viewed in plan. The end 520 provides a space in which the elastic body 800 to be described later is installed and a portion in contact with the elastic body 800.

The auxiliary holder 500 is coupled to form an integral with the holder 300 through an interference fit method, such that the fixing body 400 can be stably inserted with respect to the fixing groove 110 or the locking groove 120. As, it turns out that it is not an essential component in implementing the lock for the inspection door of the railway vehicle according to the present invention. Of course, when the auxiliary holder 500 is not provided, the inner circumferential surface of the holder 300 is provided to be sufficiently thick so as to be in direct contact with the outer circumferential surface of the feed shaft 100.

As shown in FIGS. 1 and 2, the first latch 600 is provided at the end of the through-hole 220 in the body 200, and the first rotation guide tooth 320 of the holder 300 is provided. A corresponding third rotating guide tooth 610 is formed, and serves to guide the holder 300 to rotate by interaction with the first rotating guide tooth 320 according to the transfer of the holder 300 as described above. .

The second latch 700 is provided at the end of the insertion hole 210 side of the body 200, the fourth rotary guide tooth 710 corresponding to the second rotary guide tooth 330 of the holder 300 is It is formed, and serves to guide the holder 300 is rotated in interaction with the second rotary guide teeth 330 according to the transfer of the holder 300 as described above.

The elastic body 800 applies an elastic force to the holder 300 in a direction opposite to the direction in which the feed shaft 100 is inserted into the insertion hole 210, that is, in the direction of the insertion hole 210 from the through hole 220. By doing so, the holder 300, the fixed body 400 and the auxiliary holder 500 serves to help to be transported more stably.

To this end, the elastic member 800 may be compressed as the holder 300 is transferred to the through hole 220 side, and may be provided as a compression spring that is relaxed as the holder 300 is transferred to the insertion hole 210 side. In more detail, the elastic body 800 is provided such that both ends thereof contact the inner surface of the outer circumferential portion of the through hole 220 of the body 200 and the stage 520 of the auxiliary holder 500 described above.

In the locking device for the inspection door of a railway vehicle according to a preferred embodiment of the present invention, both ends of the elastic body 800, the inner surface of the outer periphery of the through-hole 220 of the body 200 and the stage of the auxiliary holder 500 described above ( Although implemented as a compression spring in contact with 520, it is noted that the specific configuration and the like are not limited thereto.

Locking device for the inspection door of the railway vehicle according to a preferred embodiment of the present invention, the operation is implemented to be divided into three stages of the inspection door closed state, slightly open state and fully open state, but is not limited thereto.

For example, it may be implemented to be divided into four stages of a closed state, a slightly open state, a large open state, and a fully open state. The shape of the four rotary guide teeth (320, 330, 610, 710) and the shape and number of the fixing groove 110 and the locking groove 120 may be changed.

Hereinafter, with reference to Figures 4a to 6g, the operation and use state of the inspection door lock of the railway vehicle according to a preferred embodiment of the present invention will be described in detail.

Figures 4a to 4g in order to show the operation of the lock for the inspection door of the railway vehicle according to a preferred embodiment of the present invention in a slightly open state from the closed door.

4A is a cross-sectional view of a longitudinal direction of a lock for an inspection door of a railway vehicle when the inspection door is in a closed state.

In this state, when the user pushes the inspection door toward the inspection port side (right side based on FIG. 4A), the feed shaft 100 is further inserted into the through hole 220 side as shown in FIG. Is inserted into the fixing groove 110 through the guide hole 510 of the auxiliary holder 500, the holder 300, the auxiliary holder 500 and the fixing member 400 together with the feed shaft 100 and the through hole ( 220) and the elastic body 800 is compressed accordingly.

As described above, when the holder 300 is transferred to the through hole 220 and the first rotation guide teeth 320 and the third rotation guide teeth 610 of the first latch 600 are engaged with each other, the above-described FIGS. 3A to 3C. As described above, the holder 300 rotates, and thus, the installation hole 310 of the holder 300 and the fixing hole 230 of the body 200 correspond to each other.

Next, as shown in Figure 4c, the fixing body 400 is separated from the fixing groove 110 is inserted into the fixing hole 230 through the installation hole 310, so that the fixing body 400 is fixed groove ( The deviation from 110 is because the feed shaft 100 is pressed by the inner circumferential surface of the fixing groove 110 as the feed shaft 100 is transferred to the holder 300 and the auxiliary holder 500. FIG. 4D is a cross-sectional view of the state in which the fixture 400 is separated from the fixing groove 110 at an angle rotated by 60 ° in the direction in which the holder 300 is rotated in FIG. 4B.

Then, as shown in Figure 4e, as the fixing member 400 is separated from the fixing groove 110, the feed shaft 100 separated from the holder 300 and the auxiliary holder 500 toward the insertion hole 210 side. Transferred. At this time, since the fixing member 400 is inserted into the fixing hole 230 through the installation hole 310, the holder 300 and the auxiliary holder 500 are fixed to the body 200 and are not transported.

When the feed shaft 100 is transferred to the insertion hole 210 side, and the fixing body 400 and the locking groove 120 of the feeding shaft 100 are positioned to correspond to each other, as shown in FIG. 4F, the fixing body 400 is shown. ) Is separated from the fixing hole 230 and is inserted into the locking groove 120 through the installation hole 310.

In this way, the fixing body 400 is separated from the fixing hole 230 and inserted into the locking groove 120 is elastic force toward the insertion hole 210 by the elastic body 800 in which the holder 300 and the auxiliary holder 500 are compressed. This is because the inner circumferential surface of the fixing hole 230 pressurizes the fixing body 400 relatively.

Then, as shown in Figure 4g, the fixed body 400 is inserted into the locking groove 120, the feed shaft 100 is coupled to the holder 300 and the auxiliary holder 500, the feed shaft 100 Due to the elastic force of the elastic member 800 applied to the holder 300 and the auxiliary holder 500 is transferred to the insertion hole 210 side.

As such, when the holder 300 is transferred to the insertion hole 210, the holder 300 rotates as described above with reference to FIGS. 3C to 3E, and thus, the installation hole 310 and the body ( The positions of the fixing holes 230 of the 200 are shifted from each other, and the fixing body 400 is stably inserted into the locking groove 120 to fix the position of the feed shaft 100.

That is, one end installed in the inspection door of the feed shaft 100 is fixed in a state of being conveyed by the length of the feed shaft 100 with respect to the body 200, the inspection door for the inspection port is installed body 200 is the feed shaft It is in a slightly open state as much as the length of (100).

As described above with reference to FIGS. 4A to 4G, when the inspection door is subjected to a unit cycle to be slightly opened in the closed state, the holder 300 is reciprocated once with respect to the body 200 and has a unit angle. Rotated by 60 °.

Figures 5a to 5e sequentially shows the operation of the lock for the inspection door of the railway vehicle in accordance with a preferred embodiment of the present invention to a fully open state from the slightly open state.

5A is a cross-sectional view of the longitudinal direction of the lock for the inspection door of a railway vehicle when the inspection door is slightly opened.

In this state, when the user pushes the inspection door toward the inspection port side (right side based on FIG. 5A), the feed shaft 100 is further inserted into the insertion hole 210 side as shown in FIG. Is inserted into the locking groove 120 through the guide hole 510 of the auxiliary holder 500, the holder 300, the auxiliary holder 500 and the fixing member 400 together with the feed shaft 100, 220) and the elastic body 800 is compressed accordingly.

As described above, when the holder 300 is transferred to the through hole 220 and the first rotation guide teeth 320 and the third rotation guide teeth 610 of the first latch 600 are engaged with each other, the above-described FIGS. 3A to 3C. As described above, the holder 300 rotates, and thus, the installation hole 310 of the holder 300 and the fixing hole 230 of the body 200 correspond to each other.

Next, as shown in Figure 5c, the fixing body 400 is separated from the locking groove 120 is inserted into the fixing hole 230 through the installation hole 310, so that the fixing body 400 is fixed groove ( The deviation from 110 is because the feed shaft 100 is pressed by the inner circumferential surface of the locking groove 120 as it is transferred to the holder 300 and the auxiliary holder 500. FIG. 5D is a cross-sectional view of the fixing body 400 separated from the locking groove 110 at an angle of 60 ° in the direction in which the holder 300 is rotated in FIG. 5B.

Thereafter, as shown in FIG. 5E, the feed shaft 100 separated from the holder 300 and the auxiliary holder 500 moves toward the insertion hole 210 as the fixing member 400 is separated from the fixing groove 110. Transferred and completely separated from the body 200. Accordingly, the inspection door in which the feed shaft 100 is installed may be completely separated from the inspection door in which the body 200 is installed, and thus, the inspection door is completely opened.

At this time, since the holder 300 and the auxiliary holder 500 are inserted into the fixing hole 230 through the installation hole 310, the holder 300 and the auxiliary holder 500 are fixed to the body 200 and are not transported.

When the feed shaft 100 is completely separated from the body 200, as shown in FIG. 5F, the fixing body 400 is separated from the fixing hole 230 and the auxiliary holder 500 through the installation hole 310. Go inside of.

As such, the fixing body 400 is separated from the fixing hole 230 because the holder 300 and the auxiliary holder 500 are elastically received by the compressed elastic body 800 toward the insertion hole 210. This is because the inner circumferential surface 230 presses the fixture 400.

Thereafter, as shown in FIG. 5G, as the fixing body 400 is separated from the fixing hole 230, the holder 300 and the auxiliary holder 500 are separated from the body 200 and the elastic force of the elastic body 800 is removed. Due to this is transferred to the insertion hole 210 side. As such, when the holder 300 is transferred to the insertion hole 210, the holder 300 rotates as described above with reference to FIGS. 3C to 3E.

As described above with reference to FIGS. 5A to 5G, when the inspection door is subjected to a unit cycle to be in a fully opened state from a slightly open state, the holder 300 is reciprocated once with respect to the body 200 and the unit angle Is rotated by 60 °.

Figures 6a to 6g sequentially shows the operation of the lock door for the inspection door of the railway vehicle in accordance with a preferred embodiment of the present invention to make the inspection door in a closed state in a fully open state.

First, when the user pushes the inspection door while closing the inspection door in the fully opened state, as shown in FIG. 6A, the feed shaft 100 installed in the inspection door is inserted into the insertion hole 210, and the feed shaft 100 is inserted. The end of the) and the fixture 400 is in contact.

In this state, if the user keeps pushing the inspection door toward the inspection port side, as shown in FIG. 6B, the feed shaft 100 is further inserted into the through hole 220 and presses the fixing body 400 to fix the fixing body 400. In addition, the holder 300 and the auxiliary holder 500 are also transferred to the through hole 220 side like the feed shaft 100, and thus the elastic body 800 is compressed.

As described above, when the holder 300 is transferred to the through hole 220 and the first rotation guide teeth 320 and the third rotation guide teeth 610 of the first latch 600 are engaged with each other, the above-described FIGS. 3A to 3C. As described above, the holder 300 rotates, and thus, the installation hole 310 of the holder 300 and the fixing hole 230 of the body 200 correspond to each other.

Next, as shown in Figure 6c, the fixing member 400 is moved while being continuously pressed by the end of the feed shaft 100 is inserted into the fixing hole 230 through the installation hole (310). FIG. 6D is a cross-sectional view of the fixing body 400 inserted into the fixing hole 230 at an angle of 60 ° in the direction in which the holder 300 is rotated in FIG. 6B.

Thereafter, as shown in FIG. 6E, the feed shaft 100 does not interfere with the fixing body 400 as the fixing body 400 is inserted into the fixing hole 230, thereby penetrating the through-hole 220. Conveyed deeply.

At this time, since the fixing member 400 is inserted into the fixing hole 230 through the installation hole 310, the holder 300 and the auxiliary holder 500 are fixed to the body 200 and are not conveyed, and the feed shaft 100 ) Is transported until the fixing groove 110 corresponds to the position of the fixing body 400.

When the feed shaft 100 is transferred to the through-hole 220 side and the fixing groove 110 and the fixing body 400 are located to correspond to each other, as shown in FIG. 6F, the fixing body 400 is fixed to the fixing hole 230. Detached from) is inserted into the fixing groove 110 through the installation hole (310).

As such, the fixing member 400 is separated from the fixing hole 230 and inserted into the fixing groove 110 by the elastic member 800 in which the holder 300 and the auxiliary holder 500 are compressed to the insertion hole 210. This is because the inner circumferential surface of the fixing hole 230 pressurizes the fixing body 400 relatively.

Thereafter, as shown in FIG. 6G, the fixed body 400 is inserted into the fixing groove 110 so that the feed shaft 100 is coupled to the holder 300 and the auxiliary holder 500, thereby transferring the feed shaft 100. Due to the elastic force of the elastic member 800 applied to the holder 300 and the auxiliary holder 500 is transferred to the insertion hole 210 side.

As such, when the holder 300 is transferred to the insertion hole 210, the holder 300 rotates as described above with reference to FIGS. 3C to 3E, and thus, the installation hole 310 and the body ( The positions of the fixing holes 230 of the 200 are shifted from each other, and the fixing body 400 is stably inserted into the fixing groove 110 to fix the position of the feed shaft 100.

That is, since the feed shaft 100 installed in the inspection door is fixed in a state of being completely inserted into the insertion hole 210 of the body 200 installed in the inspection door, the inspection door is in a closed state with respect to the inspection door.

As described above with reference to FIGS. 6A to 6G, when the inspection door is subjected to a unit cycle to be in a closed state from a fully open state, the holder 300 is reciprocated once with respect to the body 200 and has a unit angle. Rotated by 60 °.

Thereafter, when the user pushes the inspection door toward the inspection port side, the fixing groove 110 and the locking groove 120 are formed symmetrically to each other at 180 ° intervals, and a plurality of fixing holes 230 are also formed to be symmetrically at 180 °. The inspection door described with reference to FIGS. 4A through 4G is repeatedly subjected to a unit cycle that causes the check door to be slightly opened from the closed state.

That is, the holder 300 and the auxiliary holder 500 is rotated by 60 ° of a unit angle with respect to the operation of pushing the inspection door toward the inspection door based on the body 200, and the inspection door is closed. As the user needs to push the door to the door three times until it returns to the closed state through the slightly open state and the fully open state, the holder 300 and the auxiliary holder 500 are rotated by 180 °. During the rotation of 360 °, which is one wheel about 200, the total operation is performed twice in three stages, in which the door is closed, slightly open, fully open, and then closed again.

As described above, the locking device for the inspection door of the railway vehicle according to the present invention, as the feed shaft 100 is installed in the inspection door is inserted into the insertion hole 210 of the body 200, the fixed body 400 is the feed shaft While being sequentially inserted into or detached from the fixing groove 110 and the locking groove 120 of the 100, the feed shaft 100 is inserted into most of the insertion hole 210 of the body 200 or only the end portion is inserted By being fixed in the form or released to be detached from the insertion hole 210, not only the check door can be implemented in a slightly open state as well as the closed state and the fully open state, these stepped states are repeatedly transferred to the feed shaft 100 ) Is sequentially implemented through a simple operation of pressing the installed check door toward the inspection port side, the operation is also very easy.

Although the present invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that various modifications and variations are possible within the technical spirit of the present invention, and such modifications and variations belong to the appended claims. will be.

Description of the Related Art [0002]
100: feed shaft 110: fixed groove
120: locking groove 200: body
210: insertion hole 220: through hole
230: fixing hole 300: holder
310: mounting hole 320: first rotation guide tooth
330: second rotation guide tooth 400: fixed body
500: auxiliary holder 510: guide hole
520: 600: first latch
610: third rotation guide tooth 700: the second latch
710: fourth rotation guide tooth 800: elastic body

Claims (5)

It has a cylindrical shaft shape, and fixing grooves and locking grooves are formed on the outer circumferential surface of one end and the other end so as to be spaced apart from each other by a predetermined unit angle when viewed in a plane. A feed shaft installed in the door;
An insertion hole in which the transfer shaft is inserted is formed, the body having an empty case shape, and the insertion hole being installed in the inspection port so as to correspond to the transfer shaft;
It has a hollow shape to surround the outer circumferential surface of the feed shaft inserted into the insertion hole, and is reciprocated in the interior of the body, the installation hole corresponding to the fixed groove or the locking groove is formed as it is conveyed and rotated about the feed shaft A holder having first and second rotation guide teeth formed on the upper and lower ends thereof inclined in opposite directions;
A fixing body provided inside the installation hole and selectively inserted into the fixing groove or the locking groove to fix the feed shaft to the holder; And
Third and fourth rotation guides provided at both ends of the inside of the body, respectively, to sequentially engage the first and second rotation guide teeth according to the transfer of the holder, and to guide the holder to be rotated by the unit angle in the reciprocating transfer. First and second latches each having teeth;
Locking device for the inspection door of the railway vehicle comprising a. The method of claim 1,
An auxiliary holder coupled to the holder so as to be interposed between the outer circumferential surface of the transfer shaft and the inner circumferential surface of the holder inserted into the insertion hole, the auxiliary holder having a guide hole having an inner circumferential surface in communication with the installation hole and guiding an insertion position of the fixture;
Lock for the inspection door of the railway vehicle, further comprising a. The method of claim 1,
The body,
Includes; a plurality of fixing holes formed to correspond to the position of the installation hole according to the rotation of the holder,
The fixing body is inserted into the fixing hole while being separated from the fixing groove or the locking groove to lock the holder to the railway vehicle, characterized in that for fixing the holder. The method of claim 1,
An elastic body for applying an elastic force to the holder in a direction opposite to the direction in which the feed shaft is inserted into the insertion hole;
Lock for the inspection door of the railway vehicle, further comprising a. The method of claim 1,
The body,
A through hole formed to face the insertion hole so that the feed shaft inserted into the insertion hole passes;
Locking device for the inspection door of the railway vehicle comprising a.

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