Spring bolt structure and sleeping berth lock

Abstract

The utility model discloses a spring bolt structure and a sleeping berth lock. The spring bolt structure comprises a second mounting box, a spring bolt module and a second limiting module, the spring bolt module comprises a spring bolt and a first force application part; the spring bolt comprises a first end; the first force application part applies force to the spring bolt, so that the spring bolt moves between a first position and a second position; when the spring bolt is located at the first position, the first end extends out of the second mounting box, and when the spring bolt is located at the second position, the first end retracts into the second mounting box; the second limiting module is used for limiting the spring bolt to the second position, and the second limiting module is used for releasing limiting of the spring bolt, so that the spring bolt freely moves from the second position to the first position; the sleeping berth lock comprises a switch structure, a connecting structure and a spring bolt structure, and the switch structure is used for applying force to a spring bolt to enable the spring bolt to move from a first position to a second position; the connecting structure is used for transmitting applied force to the spring bolt. According to the spring bolt structure and the sleeping berth lock, the spring bolt can be retracted when not used, use is safe, and the structure is compact.

Description

Technical Field

[0001] The utility model relates to the technical field of train locks, in particular to a lock tongue structure and a berth lock. Background Art

[0002] At present, with the rapid development of my country's economy, the high-speed railway industry has ushered in a new leap-forward development. At the same time, with the continuous improvement of people's economic conditions and living standards, people are not limited to seats when riding in a train. For this reason, sleeper trains that can be used for sitting during the day and sleeping at night came into being. Sleeper trains are operated at night, which can greatly save precious time during the day. Sleepers can be converted into seats during the day, that is, the lower berth is converted into a seat, and the upper berth needs to be able to flip up or move up to ensure sufficient activity space for the lower berth. After the upper berth is flipped up or moved up, it needs to be locked by a lock. The existing lock has a lock tongue that extends outward in the non-locked state. When applied to the upper berth of a sleeper train, that is, when the upper berth is used as a normal sleeper, the lock tongue extends outward, affecting the appearance of the sleeper train and the safety of passengers when using it. Utility Model Content

[0003] In order to solve the above problems in the prior art, the utility model provides a lock tongue structure and a berth lock which can be retracted when not in use, is safe to use, has a compact structure, and is easy to operate.

[0004] In order to achieve the above utility model object, the utility model provides a lock tongue structure, including a second installation box, a lock tongue module and a second limit module;

[0005] The locking tongue module comprises a locking tongue and a first force applying component;

[0006] The locking tongue includes a first end;

[0007] The first force-applying component applies force to the lock tongue to make the lock tongue move between a first position and a second position; when the lock tongue is in the first position, the first end extends out of the second installation box, and when the lock tongue is in the second position, the first end is retracted into the second installation box;

[0008] The second limiting module is used to limit the lock tongue to the second position, and the second limiting module is used to release the limit on the lock tongue and allow the lock tongue to move freely from the second position to the first position.

[0009] Furthermore, a limiting groove is provided on the lock tongue;

[0010] The second limiting module includes a limiting member and a second force applying member;

[0011] The limiting member is located in the second installation box, and the limiting member includes:

[0012] a sleeve connection portion, the sleeve connection portion being rotatably matched with the second installation box;

[0013] A swing arm, one end of which is fixedly connected to the sleeve portion;

[0014] and a limiting protrusion, wherein the limiting protrusion is arranged on the swing arm;

[0015] When the limiting member rotates along the sleeve portion, the limiting protrusion moves back and forth between the third position and the fourth position; the second force-applying component is used to apply force to the limiting member to make the limiting member rotate along the sleeve portion;

[0016] When the limiting protrusion is located at the third position, the limiting protrusion matches the limiting groove;

[0017] When the limiting protrusion is located at the fourth position, the cooperation between the limiting protrusion and the limiting groove is released.

[0018] Further, the second force-applying component includes a reset plate and a torsion spring, and the torsion spring is located in the second installation box;

[0019] The reset plate includes a third end and a fourth end;

[0020] There are two swing arms, which are arranged in a V-shape on both sides of the sleeve portion, the limiting protrusion is arranged on one of the swing arms, and a slot is arranged on the other swing arm;

[0021] The third end passes through the side wall of the second installation box, and the fourth end is in abutment with the swing arm provided with the card slot;

[0022] One end of the torsion spring abuts against the inner wall of the second installation box, and the other end of the torsion spring abuts against the slot;

[0023] When force is applied to the third end to make the reset plate move along the first direction, the fourth end pushes the limiting member to rotate, and the limiting protrusion moves from the third position to the fourth position;

[0024] When the locking tongue moves to the second position, the torsion spring pushes the limiting member to rotate, and the limiting protrusion moves from the fourth position to the third position.

[0025] Furthermore, the second force-applying component further includes a tension spring; the tension spring is located in the second installation box;

[0026] The reset plate is provided with a hanging rod near the fourth end;

[0027] One end of the tension spring is hung on the hanging rod, and the other end of the tension spring is hung in the second installation box.

[0028] Further, a direction of a line connecting the first position and the second position and toward the second position is the first direction.

[0029] Further, the locking tongue further comprises a second end, the second end being opposite to the first end;

[0030] The first force-applying component includes a pull rod and a second spring;

[0031] The second end is connected to one axial end of the pull rod in the second installation box, and the pull rod is used to drive the locking tongue to move from the first position to the second position along the axial direction of the pull rod;

[0032] The second spring is sleeved on the pull rod, and the second spring is used to push the locking tongue to move from the second position to the first position along the axial direction of the pull rod.

[0033] A berth lock comprises a switch structure and a connection structure, and also comprises the lock tongue structure.

[0034] The switch structure is used to apply force to the lock tongue to move the lock tongue from the first position to the second position;

[0035] The connecting structure is used to transmit the force applied by the switch structure to the locking tongue.

[0036] Furthermore, the number of the locking tongue structures is at least two, and the connecting structure corresponds to the locking tongue structures one by one.

[0037] Furthermore, the switch structure includes a locking module, a knob module and a first limit module;

[0038] The locking module includes a lock core and a stop plate; when the lock core rotates, the stop plate rotates with the lock core between a fifth position and a sixth position;

[0039] The knob module includes a knob, and when an external force is applied to rotate the knob, the knob drives the locking tongue to move from the first position to the second position;

[0040] When the stop plate is located at the fifth position, the first limit module limits the knob from rotating;

[0041] When the stop plate is located at the sixth position, the rotation restriction of the knob by the first limiting module is released.

[0042] Furthermore, when the stop plate is located at the sixth position, the first limiting module is used to increase the friction force when the knob is rotated.

[0043] The beneficial effects of the utility model are as follows: when the lock tongue structure and the berth lock provided by the utility model are used, when the berth is used normally, the lock tongue is limited to the second position by the second limiting module, and the first end is retracted into the second installation box at this time, so as to ensure the beauty of the mobile sleeper and the safety of passengers when using the mobile sleeper; when the berth needs to be flipped up or moved up, the second limiting module releases the limit on the lock tongue, so that the lock tongue can move freely from the second position to the first position, so as to achieve the limit on the berth;

[0044] The lock tongue structure and the berth lock structure provided by the utility model are compact and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 This is a schematic diagram of the structure when the number of the lock tongue structures in the utility model is two Figure Ⅰ ;

[0046] Figure 2 This is a schematic diagram of the structure when the number of the lock tongue structures in the utility model is two Figure II ;

[0047] Figure 3 It is a schematic cross-sectional structure diagram of the switch unit in the utility model;

[0048] Figure 4 This is a schematic diagram of the front structure of the first box body in the utility model;

[0049] Figure 5 This is a schematic diagram of the back structure of the first box body in the utility model;

[0050] Figure 6 It is a schematic diagram of the matching relationship between the locking structure and the first limiting unit in the utility model;

[0051] Figure 7 It is a structural schematic diagram of the sliding member in the utility model;

[0052] Figure 8 This is a schematic diagram of the structure of the limiting plate in the utility model;

[0053] Fig. 9 This is a schematic diagram of the connection relationship of the switch unit when the number of the lock tongue structures in the utility model is two;

[0054] Fig.10 The internal structure of the lock tongue unit of the utility model is shown in FIG. 1 when the lock tongue is in the first position and the limiting protrusion is in the fourth position. Figure Ⅰ ;

[0055] Fig.11 The internal structure of the lock tongue unit of the utility model is shown in FIG. 1 when the lock tongue is in the first position and the limiting protrusion is in the fourth position. Figure II ;

[0056] Fig.12 It is a schematic diagram of the positional relationship between the lock tongue and the limiting member when the lock tongue is located at the first position and the limiting protrusion is located at the fourth position in the utility model;

[0057] Fig.13 The internal structure of the lock tongue unit of the utility model is shown in FIG. 1 when the lock tongue is in the second position and the limiting protrusion is in the third position. Figure Ⅰ ;

[0058] Fig.14 The internal structure of the lock tongue unit of the utility model is shown in FIG. 1 when the lock tongue is in the second position and the limiting protrusion is in the third position. Figure II ;

[0059] Fig.15 It is a schematic diagram of the positional relationship between the lock tongue and the limiting member when the lock tongue is located at the second position and the limiting protrusion is located at the third position in the utility model;

[0060] Fig.16 This is a structural schematic diagram when the number of the lock tongue structure in the utility model is one.

[0061] The reference numerals are: 1, switch structure; 11, first installation box; 111, first box body; 1111, first chamber; 1112, second chamber; 1113, first through hole; 1114, second through hole; 1115, first boss; 1116, second boss; 1117, third boss; 112, guard plate; 113, first connecting bolt; 12, locking module; 121, lock core; 122, stop plate; 123, first pressure plate; 124, second connecting bolt; 13, knob module; 1 31. knob; 132. sleeve; 133. rotating plate; 134. third connecting bolt; 14. first limiting module; 141. sliding member; 1411. third chamber; 1412. push plate; 142. limiting plate; 1421. sleeve hole; 1422. first arc surface; 1423. first plane; 1424. second plane; 1425. second arc surface; 1426. third arc surface; 1427. third plane; 1428. fourth plane; 143. first spring; 144. second pressing plate; 2. Lock tongue structure; 21. Second installation box; 211. Second box body; 2111. Hook; 212. Cover plate; 213. First side plate; 214. Second side plate; 2141. Groove; 22. Lock tongue module; 221. Lock tongue; 2211. First end; 2212. Second end; 2213. Limiting groove; 2214. Displacement groove; 2215. First connecting hole; 2216. Second connecting hole; 2217. Limiting surface; 222. Pull rod; 223. Second spring; 23. Second limiting module Block; 231, reset plate; 2311, third end; 2312, fourth end; 2313, hanging rod; 2314, sliding part; 232, tension spring; 233, limiting member; 2331, limiting protrusion; 2332, sleeve part; 2333, baffle; 2334, slot; 2335, swing arm; 234, torsion spring; 24, first connecting member; 25, second connecting member; 3, connecting structure; 31, pull rope; 32, connecting rod; 4, lock tongue matching structure; 41, fourth boss; 42, fifth boss. DETAILED DESCRIPTION

[0062] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0063] See also Figures 10 to 15 , the embodiment of the utility model provides a lock tongue structure, including a second installation box 21, a lock tongue module 22 and a second limit module 23;

[0064] The locking tongue module 22 includes a locking tongue 221 and a first force applying component;

[0065] The locking tongue 221 includes a first end 2211;

[0066] The first force-applying component applies force to the lock tongue 221, so that the lock tongue 221 moves between the first position and the second position; when the lock tongue 221 is at the first position, the first end 2211 extends out of the second installation box 21, and when the lock tongue 221 is at the second position, the first end 2211 is retracted into the second installation box 21;

[0067] The second limiting module 23 is used to limit the locking tongue 221 to the second position, and the second limiting module 23 is used to release the limiting of the locking tongue 221 and allow the locking tongue 221 to move freely from the second position to the first position.

[0068] When in use, the second installation box 21 is embedded at the edge of the berth. When the berth is in normal use, the second limiting module 23 limits the locking tongue 221 to the second position. At this time, the first end 2211 is retracted into the second installation box 21 to ensure the beauty of the mobile sleeper and the safety of passengers when using it. When the berth needs to be flipped up or moved up, the second limiting module 23 releases the limit on the locking tongue 221, so that the locking tongue 221 can move freely from the second position to the first position. In the process of the locking tongue 221 moving freely from the second position to the first position, or when the locking tongue When 221 is in the first position, the first end 2211 extends out of the edge of the berth. Those skilled in the art can understand that the first end 2211 includes an inclined surface and a mating surface. When the mating surface cooperates with the lock tongue mating structure 4, the berth is limited after being flipped up or moved up. The structure that cooperates with the mating surface in the lock tongue mating structure 4 is the fourth boss 41. In addition, the lock tongue 221 can freely move from the second position to the first position through the transition through the inclined surface until the mating surface cooperates with the fourth boss 41. This is the prior art and will not be repeated here.

[0069] See also Figure 1 , Figure 2 and Figures 10 to 15 The second installation box 21 includes a second box body 211, and the second box body 211 includes a bottom plate and a side block arranged in a U shape on the bottom plate. The opening end of the U-shaped side block is sequentially provided with a first side plate 213 and a second side plate 214 from the inside to the outside. A cover plate 212 is provided on the second box body 211, and the cover plate 212 and the bottom plate are parallel to each other; the first end 2211 of the lock tongue 221 sequentially penetrates the first side plate 213 and the second side plate 214 from the inside to the outside; when the lock tongue 221 is located at the first position, the first end 2211 is located outside the second side plate 214, and when the lock tongue 221 is located at the second position, the end surface of the first end 2211 at least retracts to not exceed the outer side surface of the second side plate 214.

[0070] In some preferred embodiments, a limiting groove 2213 is provided on the locking tongue 221;

[0071] The second limiting module 23 includes a limiting member 233 and a second force applying member;

[0072] The limiting member 233 is located in the second installation box 21, and the limiting member 233 includes:

[0073] The sleeve portion 2332 is rotatably matched with the second installation box 21; preferably, a rotating column is provided on the bottom plate of the second box body 211, the sleeve portion 2332 is rotatably connected to the rotating column, and the axis of the rotating column is perpendicular to the bottom plate of the second box body 211;

[0074] A swing arm 2335, one end of which is fixedly connected to the sleeve portion 2332;

[0075] and a limiting protrusion 2331, the limiting protrusion 2331 is arranged on the swing arm 2335;

[0076] When the limiting member 233 rotates along the sleeve portion 2332, the limiting protrusion 2331 moves back and forth between the third position and the fourth position; the second force applying component is used to apply force to the limiting member 233 to make the limiting member 233 rotate along the sleeve portion 2332;

[0077] When the limiting protrusion 2331 is located at the third position, the limiting protrusion 2331 cooperates with the limiting groove 2213 to limit the locking tongue 221 to the second position;

[0078] When the limiting protrusion 2331 is located at the fourth position, the cooperation between the limiting protrusion 2331 and the limiting groove 2213 is released, that is, the limitation on the locking tongue 221 is released, and the locking tongue 221 can move freely from the second position to the first position.

[0079] When the lock tongue 221 moves to the second position, the force is applied to make the limiting member 233 rotate along the sleeve portion 2332, thereby driving the swing arm 2335 to swing. When the limiting protrusion 2331 moves to the third position, it cooperates with the limiting groove 2213 to limit the lock tongue 221. Figure 13-Figure 15 When it is necessary to release the limit on the lock tongue 221, force is applied to make the limit member 233 rotate along the sleeve portion 2332 to drive the limit protrusion 2331 to move to the fourth position, and the cooperation between the limit protrusion 2331 and the limit groove 2213 is released, so that the lock tongue 221 can move freely from the second position to the first position.

[0080] In some preferred embodiments, the second force-applying member includes a reset plate 231 and a torsion spring 234, and the torsion spring 234 is located in the second installation box 21;

[0081] The reset plate 231 includes a third end 2311 and a fourth end 2312;

[0082] There are two swing arms 2335, which are arranged in a V-shape on both sides of the sleeve portion 2332. The limiting protrusion 2331 is arranged on one of the swing arms 2335, and the other swing arm 2335 is provided with a slot 2334. Preferably, a baffle 2333 is arranged at the slot 2334 to prevent the torsion spring 234 from slipping off.

[0083] The third end 2311 penetrates through the side wall of the second installation box 21, and the fourth end 2312 is in conflict with the swing arm 2335 provided with the slot 2334;

[0084] One end of the torsion spring 234 rests on the inner wall of the second installation box 21, and the other end of the torsion spring 234 rests in the slot 2334; preferably, the middle part of the torsion spring 234 is sleeved on the rotating column or the sleeve portion 2332, and one end of the torsion spring 234 rests on the inner wall of the U-shaped enclosure closed end of the second box body 21, and the structure is reasonable.

[0085] When force is applied to the third end 2311 to make the reset plate 231 move along the first direction, the fourth end 2312 pushes the limiting member 233 to rotate, and the limiting protrusion 2331 moves from the third position to the fourth position, and then the cooperation between the limiting protrusion 2331 and the limiting groove 2213 is released, so that the lock tongue 221 can move freely from the second position to the first position. Preferably, the lock tongue 221 also includes a limiting surface 2217, and the limiting groove 2213 is adjacent to the limiting surface 2217. When the cooperation between the limiting protrusion 2331 and the limiting groove 2213 is released, as the lock tongue 221 moves between the first position and the second position, the limiting protrusion 2331 abuts against the limiting surface 2217. Furthermore, the circular arc transition between the limiting groove 2213 and the limiting surface 2217 ensures the smoothness of the movement of the lock tongue 221 and the swinging of the swing arm 2235.

[0086] When the lock tongue 221 moves to the second position, the torsion spring 234 pushes the limiting member 233 to rotate, and the limiting protrusion 2331 moves from the fourth position to the third position. When the lock tongue 221 moves to the second position, the second limiting module 23 can actively limit the lock tongue 221 under the action of the torsion spring 234. Preferably, the lock tongue 221 also includes a yield groove 2214. When the limiting protrusion 2331 cooperates with the limiting groove 2213, the swing arm 2335 of the limiting protrusion 2331 is provided to cooperate with the yield groove 2214, so that the space in the second installation box 21 can be more reasonably utilized.

[0087] In addition, mutual constraint between the lock tongue 221 and the limiting member 233 can be achieved through the torsion spring 234, that is, when the limiting protrusion 2331 is located in the third position, the lock tongue 221 is constrained to the second position, and when the limiting protrusion 2331 is against the limiting surface 2217, the lock tongue 221 can be prevented from moving from the second position to the first position and the limiting protrusion 2331 can be prevented from returning to the third position.

[0088] In some preferred embodiments, the second force-applying member further includes a tension spring 232; the tension spring 232 is located in the second installation box 21;

[0089] The reset plate 231 is provided with a hanging rod 2313 near the fourth end 2312;

[0090] One end of the tension spring 232 is hung on the hanging rod 2313, and the other end of the tension spring 232 is hung in the second installation box 21, see Fig.10 , Fig.13 A hook 2111 is provided on the bottom plate of the second box body 211 , and the other end of the tension spring is hooked on the hook 2111 .

[0091] When the force applied to the third end 2311 is removed, the reset plate 231 is reset under the action of the tension spring 232;

[0092] Preferably, a sliding portion 2314 is provided in the middle of the reset plate 231, and a sliding groove cooperating with the sliding portion 2314 is provided on the second installation box 21. When the reset plate 231 moves back and forth along the first direction, the sliding portion 2314 moves back and forth along the sliding groove, and at the same time, the sliding groove limits the reset plate 231 in the first direction to prevent the reset plate 231 from slipping.

[0093] Furthermore, the direction of the line between the first position and the second position and toward the second position is the first direction, that is, the direction of the force applied to the third end 2311 to move the reset plate 231 along the first direction is the same as the direction in which the lock tongue 221 retracts, see Figure 1 , 2 A fifth boss 42 is provided on the lock tongue matching structure 4. When the fifth boss 42 touches the third end 2311, the reset plate 231 can move along the first direction to push the limiting member 233 to rotate, so that the limiting protrusion 2331 rotates from the third position to the fourth position to release the limiting of the lock tongue 221. The lock tongue 221 extends in a direction opposite to the first direction, that is, moves from the second position to the first position to match with the fourth boss 41, thereby realizing the limiting of the berth.

[0094] Preferably, see Figure 2 A groove 2141 is provided on the second side plate 214, and the fifth boss 42 touches the third end 2311 in the groove 2141. The width of the fifth boss 42 matches the groove 2141. When the berth is flipped up or moved up, the fifth boss 42 touches the third end 2311 in the groove 2141 to make the reset plate 231 move along the first direction, thereby releasing the limit of the lock tongue 221. Preferably, the third end 2311 is an arc surface, which is convenient for matching with the fifth boss 42. On the other hand, when the lock tongue 221 is limited to the second position, even if the third end 2311 partially exceeds the outer surface of the second side plate 214, the arc surface also has higher safety.

[0095] In some preferred implementations, the locking tongue 221 further includes a second end 2212 , and the second end 2212 is opposite to the first end 2211 ;

[0096] The first force applying component includes a pull rod 222 and a second spring 223;

[0097] The second end 2212 is connected to one axial end of the pull rod 222 in the second installation box 21, see Fig.12 The second end 2212 is provided with a first connection hole 2215 and a second connection hole 2216. One axial end of the pull rod 222 is inserted into the first connection hole 2215 and fixed by a threaded connection or a pin connection through the second connection hole 2216. The pull rod 222 is used to drive the locking tongue 221 to move from the first position to the second position along the axial direction of the pull rod 222, that is, the movement of the locking tongue 221 from the first position to the second position is in a non-active state and needs to be completed passively under the application of external force, which can ensure the safety of the rear limit of the berth after turning up or moving up;

[0098] The second spring 223 is sleeved on the pull rod 222, and the second spring 223 is used to push the lock tongue 221 to move from the second position to the first position along the axial direction of the pull rod 222. Fig.10 , 11 , 13, 14, the other axial end of the pull rod 222, that is, the end away from the lock tongue 221, passes through the side wall of the second installation box 21, which is convenient for the second installation box 21 to apply force to the pull rod 222, one end of the second spring 223 abuts against the second end 2212, and the other end of the second spring 223 abuts against the inner wall of the second installation box 21. When the axial force is applied along the pull rod 222 to make the pull rod 222 pull the lock tongue 221 to move to the second position, the second spring 223 is deformed. When the axial force along the pull rod 222 is withdrawn and the limit of the lock tongue 221 by the limit member 233 is released, the second spring 223 pushes the lock tongue 221 to move from the second position to the first position along the axial direction of the pull rod 222 during the recovery process.

[0099] Further, see Fig.10 The lock tongue 221 is L-shaped, and a first connecting member 24 is arranged inside the L-shaped bending part. A second connecting member 25 is arranged between the lock tongue 221 and the reset plate 231. The first connecting member 24 and the second connecting member 25 are respectively U-shaped. The lock tongue 221 moves back and forth between the first position and the second position between the first connecting member 24 and the second connecting member 25 to ensure that the moving direction of the lock tongue 221 is not deflected. At the same time, the first connecting member 24 can limit the lock tongue 221 to prevent the lock tongue 221 from slipping when moving from the second position to the first position; the second connecting member 25 limits the sliding of the reset plate 231 to prevent the fourth end 2312 of the reset plate 231 from deflecting toward the side close to the lock tongue 221.

[0100] In addition, to facilitate the connection between the second box body 211 and the cover plate 212, one side plate of the U-shape is connected to the bottom plate of the second box body 211 by bolts, and the other side plate of the U-shape is connected to the cover plate 212 by bolts. In addition, one end of the rotating column is fixed to the bottom plate of the second box body 211 by threaded connection, and the other end of the rotating column is fixedly connected to the cover plate 212 by threaded connection. The second box body 211 is connected to the cover plate 212 by the first connecting member 24, the second connecting member 25 and the rotating column arranged in a triangle, ensuring a stable connection.

[0101] A berth lock comprises a switch structure 1, a connection structure 3 and a lock tongue structure 2.

[0102] The switch structure 1 is used to apply force to the lock tongue 221 to move the lock tongue 221 from the first position to the second position;

[0103] The connecting structure 3 is used to transmit the force of the switch structure 1 to the lock tongue 221. When the distance between the switch structure 1 and the lock tongue structure 2 is far, see Figure 1 , 2 9. Use the pull rope 31 to achieve force transmission. When the distance between the switch structure 1 and the lock tongue structure 2 is close, see Fig.16 , a connecting rod 32 is used to realize force transmission, and the pull rope 31 and the connecting rod 32 are both existing technologies and will not be described in detail here.

[0104] The number of the locking tongue structure 2 is one, see Fig.16 At this time, the switch structure 1 is located in the middle of the bunk, and the lock tongue structure 2 is located at one lateral end of the middle of the bunk. This form is mainly suitable for application scenarios where the bunk is flipped up. At this time, the lock tongue matching structure 4 is installed above the middle of the bunk after flipping up.

[0105] Furthermore, the number of the locking tongue structures 2 is at least two, and the connecting structure 3 corresponds to the locking tongue structures 2 one by one. When the berth is large, the two locking tongue structures 2 and the locking tongue matching structure 4 can be used to limit the berth to ensure the stability of the berth after turning up or moving up, thereby ensuring safety. Figure 1 , 2 9. At this time, the switch structure 1 is located in the middle of the bunk, the lock tongue structure 2 is located at the longitudinal ends of the bunk, and the lock tongue matching structure 4 is installed on the vehicle body at the longitudinal ends of the bunk after flipping up or moving up.

[0106] Furthermore, the switch structure 1 includes a locking module 12, a knob module 13 and a first limit module 14;

[0107] The locking module 12 includes a lock core 121 and a stop plate 122; when the lock core 121 rotates, the stop plate 122 rotates with the lock core 121 between the fifth position and the sixth position;

[0108] The knob module 13 includes a knob 131. When an external force is applied to rotate the knob 131, the knob 131 drives the locking tongue 221 to move from the first position to the second position.

[0109] When the stop plate 122 is in the fifth position, the first limit module 14 limits the knob 131 from rotating, that is, when the train staff drives the lock cylinder 121 to rotate to the fifth position through the key matched with the lock cylinder 121, it can prevent passengers or non-train staff from arbitrarily rotating the knob 131, further ensuring the safety of use;

[0110] When the stop plate 122 is in the sixth position, the rotation restriction of the knob 131 by the first limit module 14 is released. When external force needs to be applied to the knob 131 to rotate the knob 131, the train staff drives the lock cylinder 121 to rotate to the fifth position using the key matching the lock cylinder 121, thereby releasing the rotation restriction on the knob 131.

[0111] See also Figure 3 The switch structure 1 includes a first installation box 11, a locking module 12, a knob module 13 and a first limit module 14 are installed on the first installation box 11; the first installation box 11 includes a first box body 111, see Figure 4 The first box body 111 has a first chamber 1111 and a second chamber 1112 on its front side. The first chamber 1111 is connected to the back side of the first box body 111 through a first through hole 1113, and the second chamber 1112 is connected to the other side of the first box body 111 through a second through hole 1114. Figure 3 , 6 A guard plate 112 is disposed on the back of the first box body 111 , and the guard plate 112 is connected to the first box body 111 through a first connecting bolt 113 .

[0112] The middle part of the lock core 121 is rotatably matched with the first through hole 1113, the head end of the lock core is placed in the first chamber 1111, and a stop plate 122 is sleeved on the lock core 121. The stop plate 122 is located on the back of the first box body 111, and the stop plate 122 is axially limited by the first pressure plate 123 and the second connecting bolt 124. The stop plate 122 can only rotate with the lock core head 121;

[0113] The rotation axis of the knob 131 passes through the second through hole 114 and the rotation axis of the knob 131 rotates with the second through hole 114. The force-applying part of the knob 131 is placed in the second chamber 1112. The knob module 13 also includes a rotating plate 133 located on the back of the first box body 111. The rotating plate 133 rotates synchronously with the knob 131. The rotating plate 133 is connected to the connecting structure 3:

[0114] When the number of connection structures 3 is one:

[0115] When the connection structure 3 is a pull rope 31, one end of the pull rope 31 is connected to one radial end of the rotating plate 133, and the other end of the pull rope 31 is connected to the pull rod 222; when the connection structure 3 is a connecting rod 32, one end of the connecting rod 32 is connected to one radial end of the rotating plate 133, and the other end of the pull rope 31 is connected to the pull rod 222;

[0116] When the number of the connection structures 3 is two, one connection structure 3 is respectively arranged at two radial ends of the rotating plate 133 .

[0117] The first limiting module 14 includes a limiting plate 142 which is sleeved on the rotating shaft of the knob 131 and rotates synchronously with the knob 131. The limiting plate 142 is located on the back of the first box body 111. The limiting plate 142 and the rotating plate 133 are separated by a sleeve 132. The limiting plate 142, the rotating plate 133 and the sleeve 132 are fixed on the rotating shaft of the knob 131 by a third connecting bolt 134. When the stop plate 122 limits the limiting plate 142, the rotation of the knob 131 can be limited.

[0118] The limiting plate 142 includes a sleeve hole 1421, which is sleeved on the rotating shaft of the knob 131 and matches the rotating shaft. Preferably, the sleeve hole 1421 is a square hole. The side surface of the limiting plate 142 includes a first plane 1423 and a second plane 1424 that are adjacently arranged. When the first plane 1423 or the second plane 1424 directly or indirectly abuts against the stop plate 122, the limiting plate 142 cannot be rotated, that is, when the stop plate 122 is in the fifth position ( Figure 6 The stop plate 122 is located at the dotted line position, which is the fifth position), and the limit plate 142 is indirectly limited, and the rotation of the knob 131 cannot be realized; when the first plane 1423 or the second plane 1424 is not directly or indirectly supported by the stop plate 122, the limit plate 142 can rotate with the knob 131, that is, when the stop plate 122 is in the sixth position (the sixth position refers to Figure 6 The solid line position of the middle stop plate 122), releases the rotation restriction of the knob 131 by the first limit module 14; preferably, the arc transition between the first plane 1423 and the second plane 1424, that is, see Figure 8 A first arc surface 1422 is provided between the first plane 1423 and the second plane 1424 to facilitate the limiting plate 142 to rotate along with the knob 131 .

[0119] Furthermore, when the stop plate 122 is located at the sixth position, the first limiting module 14 is used to increase the friction force when the knob 131 is rotated.

[0120] See also Figure 5 , 6The first limiting module 14 further includes a sliding member 143 located between the stop plate 122 and the limiting plate 142. When the stop plate 122 rotates from the sixth position to the fifth position, the sliding member 143 slides toward the limiting plate 142, so that the sliding member 143 abuts against the first plane 1423 or the second plane 1424, thereby limiting the rotation of the limiting plate 142.

[0121] Further, see Figure 5 , 6 , a second boss 1116 is disposed on both sides of the center line of the first through hole 1113 and the second through hole 1114 on the back side of the first box body 111, and the sliding member 143 slides between the two second bosses 1116, that is, the two second bosses 1116 are used for the sliding direction of the sliding member 143. Preferably, a second pressing plate 144 is disposed between the outer end surfaces of the two second bosses 1116 to prevent the sliding member 143 from slipping off;

[0122] Furthermore, a first boss 1115 is disposed between the two second bosses 1116, see Figure 5 , 6 7. A third chamber 1411 is provided in the middle of the sliding member 141, and a push plate 1412 is provided on one end surface of the third chamber 1411; the third chamber 1411 is sleeved on the first boss 1115; the first limiting module 14 also includes a first spring 143 disposed in the third chamber 1411, one end of the first spring 143 abuts on the first boss 1115, and the other end of the first spring 143 abuts on the push plate 1412, and the second pressing plate 144 is also used to prevent the first spring 143 from moving out of the third chamber 1411 by itself; the push plate 1412 is located between the first boss 1115 and the second through hole 1114;

[0123] When the stop plate 122 is located at the sixth position, under the action of the first spring 143, the sliding member 141 abuts against the first plane 1423 or the second plane 1424 to prevent the limit plate 142 from rotating freely. The knob 131 rotates only when force is applied to the knob 131 to indirectly overcome the elastic force of the first spring 143.

[0124] Further, see Figure 5 , 6 A third boss 1117 is disposed on both sides of the second through hole 1114 on the back side of the first box body 111;

[0125] See also Figure 8 The side surface of the limiting plate 142 further includes an adjacent third plane 1427 and a fourth plane 1428, a second arc surface 1425 is provided between the third plane 1427 and the first plane 1423, and a third arc surface 1426 is provided between the fourth plane 1428 and the second plane 1424;

[0126] See also Figure 6 , 8 When the sliding member 141 abuts against the first plane 1423, the third plane 1427 abuts against or approaches one of the third bosses 1117. It can be seen that at this time, the limiting member 142 can only move along Figure 6 The stopper 142 is rotated counterclockwise, and the third arc surface 1426 and the other third boss 1117 are transitioned, and the first arc surface 1422 and the sliding member 141 are transitioned to realize the rotation of the stopper 142. After the rotation, the fourth plane 1428 and the other third boss 1117 are abutted or close to each other.

[0127] When the fourth plane 1428 abuts against or approaches another third boss 1117, the limiting member 142 can only move along Figure 6 The limiting member 142 rotates clockwise through the transition between the second arc surface 1425 and the corresponding third boss 1117 and the transition between the first arc surface 1422 and the sliding member 141 , thereby limiting the rotation angle of the knob 131 .

[0128] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A locking tongue structure, characterized in that: It includes a second installation box, a locking tongue module and a second limiting module; The locking tongue module comprises a locking tongue and a first force applying component; The locking tongue includes a first end; The first force-applying component applies force to the lock tongue to make the lock tongue move between a first position and a second position; when the lock tongue is in the first position, the first end extends out of the second installation box, and when the lock tongue is in the second position, the first end is retracted into the second installation box; The second limiting module is used to limit the lock tongue to the second position, and the second limiting module is used to release the limitation on the lock tongue and allow the lock tongue to move freely from the second position to the first position.

2. The lock tongue structure according to claim 1, characterized in that: A limiting groove is provided on the lock tongue; The second limiting module includes a limiting member and a second force applying member; The limiting member is located in the second installation box, and the limiting member includes: a sleeve connection portion, the sleeve connection portion being rotatably matched with the second installation box; A swing arm, one end of which is fixedly connected to the sleeve portion; and a limiting protrusion, wherein the limiting protrusion is arranged on the swing arm; When the limiting member rotates along the sleeve portion, the limiting protrusion moves back and forth between the third position and the fourth position; the second force-applying component is used to apply force to the limiting member to make the limiting member rotate along the sleeve portion; When the limiting protrusion is located at the third position, the limiting protrusion matches the limiting groove; When the limiting protrusion is located at the fourth position, the cooperation between the limiting protrusion and the limiting groove is released.

3. The lock tongue structure according to claim 2, characterized in that: The second force-applying component includes a reset plate and a torsion spring, and the torsion spring is located in the second installation box; The reset plate includes a third end and a fourth end; There are two swing arms, which are arranged in a V-shape on both sides of the sleeve portion, the limiting protrusion is arranged on one of the swing arms, and a slot is arranged on the other swing arm; The third end passes through the side wall of the second installation box, and the fourth end is in abutment with the swing arm provided with the card slot; One end of the torsion spring abuts against the inner wall of the second installation box, and the other end of the torsion spring abuts against the slot; When force is applied to the third end to make the reset plate move along the first direction, the fourth end pushes the limiting member to rotate, and the limiting protrusion moves from the third position to the fourth position; When the locking tongue moves to the second position, the torsion spring pushes the limiting member to rotate, and the limiting protrusion moves from the fourth position to the third position.

4. The locking tongue structure according to claim 3, characterized in that: The second force-applying component further includes a tension spring; the tension spring is located in the second installation box; The reset plate is provided with a hanging rod near the fourth end; One end of the tension spring is hung on the hanging rod, and the other end of the tension spring is hung in the second installation box.

5. The locking tongue structure according to claim 3, characterized in that: A direction connecting the first position and the second position and toward the second position is the first direction.

6. The locking tongue structure according to claim 1, characterized in that: The locking tongue further includes a second end, the second end being opposite to the first end; The first force-applying component includes a pull rod and a second spring; The second end is connected to one axial end of the pull rod in the second installation box, and the pull rod is used to drive the locking tongue to move from the first position to the second position along the axial direction of the pull rod; The second spring is sleeved on the pull rod, and the second spring is used to push the locking tongue to move from the second position to the first position along the axial direction of the pull rod.

7. A berth lock, comprising a switch structure and a connection structure, characterized in that: Also includes the lock tongue structure according to any one of claims 1 to 6; The switch structure is used to apply force to the lock tongue to move the lock tongue from the first position to the second position; The connecting structure is used to transmit the force applied by the switch structure to the locking tongue.

8. The berth lock according to claim 7, characterized in that: The number of the locking tongue structures is at least two, and the connecting structures correspond to the locking tongue structures one by one.

9. The berth lock according to claim 7 or 8, characterized in that: The switch structure includes a locking module, a knob module and a first limit module; The locking module includes a lock core and a stop plate; when the lock core rotates, the stop plate rotates with the lock core between a fifth position and a sixth position; The knob module includes a knob, and when an external force is applied to rotate the knob, the knob drives the locking tongue to move from the first position to the second position; When the stop plate is located at the fifth position, the first limit module limits the knob from rotating; When the stop plate is located at the sixth position, the rotation restriction of the knob by the first limiting module is released.

10. The berth lock according to claim 9, characterized in that: When the stop plate is located at the sixth position, the first limiting module is used to increase the friction force when the knob is rotated.

Images