CN116122681A

CN116122681A - Door lock device and half-height door unit structure

Info

Publication number: CN116122681A
Application number: CN202111342452.4A
Authority: CN
Inventors: 史和平; 张�杰; 任金龙
Original assignee: Shanghai Jiacheng Railway Transportation Safety System Corp
Current assignee: Shanghai Jiacheng Railway Transportation Safety System Corp
Priority date: 2021-11-12
Filing date: 2021-11-12
Publication date: 2023-05-16

Abstract

The invention discloses a door lock device and a half-height door unit structure, which mainly comprise: the spring bolt shaft is sleeved on the spring bolt shaft and is independently rotated or rotated together with the spring bolt shaft under the action of external force, one end of the spring bolt is fixed with the spring bolt, the other end of the spring bolt is a fixed end, the spring bolt driving device is provided with a telescopic action part, one end of the spring bolt is provided with a convex locking part, the inner side end face of the locking part is used for limiting and locking with the locking part, and the outer side end face of the locking part forms a guide surface for guiding the locking part to move to the inner side end face; the spring is used for driving the lock tongue to reset when recovering; the lock tongue is provided with a pin shaft, and the action part of the lock tongue driving device is provided with a pin hole connected with the pin shaft, so that the pin shaft can slide along the inner wall of the pin hole. Compared with the prior art, the invention has compact, simple, stable and reliable structure.

Description

Door lock device and half-height door unit structure

Technical Field

The invention belongs to the field of half-height platform doors, and particularly relates to a door lock device and a half-height door unit structure.

Background

The half-height door mainly comprises a door body, a side box, a driving motor for driving the door body to move, a door lock for locking the door body, a guide rail for conveniently installing and supporting the door body and the like.

In some cases, conventional half-height doors cannot accommodate specifications for various platform, train door positions due to installation space constraints.

As for the lock structure, there are a lot of lock structures for rail transit platform doors, such as: CN211081344U discloses a door lock, CN106836987a discloses a platform door electromagnetic lock core. These existing locks are relatively complex in construction, are prone to failure when in use, and occupy a relatively large amount of space.

For the guide rail structure, a linear guide rail disclosed in CN212313527U is common, the whole length of the guide rail is longer, more space is required to be occupied, and when the space is insufficient, the door bodies can only be arranged to be in a front-back distributed structure, so that adjacent door bodies which are opposite cannot be directly aligned, and the application of the guide rail is limited.

In addition, in the existing half-height door structure, the guide and drive structure of the door is complex, and the door is low in compactness, so that the door cannot be flexibly applied to different environments.

Disclosure of Invention

In order to overcome the defect of complex structure of the existing door lock, the invention aims to provide a door lock device and a half-height door unit structure.

The technical scheme adopted for solving the technical problems is as follows:

a door lock apparatus comprising a latch bolt assembly, the latch bolt assembly comprising:

the bolt shaft is provided with a bolt,

a lock tongue sleeved on the lock tongue shaft and rotated independently or rotated together with the lock tongue shaft under the action of external force,

a spring with one end fixed with the lock tongue and the other end fixed,

a deadbolt drive apparatus provided with a retractable motion feature, wherein:

a protruding locking part is arranged at one end of the lock tongue, the inner side end surface of the locking part is used for limiting and locking with the locking part, and the outer side end surface of the locking part forms a guide surface for guiding the locking part to move to the inner side end surface;

when the external force disappears, the spring is restored and drives the spring bolt to reset;

the bolt is provided with a pin shaft, and the action part of the bolt driving device is provided with a pin hole connected with the pin shaft, wherein the aperture of the pin hole is larger than the outer diameter of the pin shaft so as to allow the pin shaft to slide along the inner wall of the pin hole.

The half-height door unit structure comprises a side box, a door body and a driving device for driving the door body to move, wherein the door lock device is arranged on the side box;

a baffle plate with a through hole is arranged at the top angle of one side of the upper part of the door body, and one side of the through hole on the baffle plate forms the locking part;

the baffle is provided with a fixed plate with a connecting hole, and the rotating shaft is rotatably connected to the connecting hole of the fixed plate;

a rotating handle is arranged on the rotating shaft, wherein one end of the rotating handle is fixed with the rotating shaft, and the other end of the rotating handle is used for connecting a brake cable;

and the fixed plate is also provided with two limiting pins, wherein the two limiting pins are positioned at two sides of the rotating handle and are spaced by a certain distance.

Further, a rail structure is coupled to one side of the lower portion of the door body, the rail structure including:

a guide rail hanging plate is arranged on the upper surface of the guide rail hanging plate,

first, second guide rail that are equipped with two symmetrical and bellied gibs on being equipped with along length direction's recess and the recess in relative both sides wall, wherein:

the second guide rail is fixed on one side of the door body, and the first guide rail is fixed in position;

the guide rail hanging plate is provided with a first sliding seat and a second sliding seat which are arranged in parallel;

two groups of rolling assemblies which are staggered in height and can rotate are respectively arranged on the first sliding seat and the second sliding seat, and annular grooves which encircle a circle are respectively arranged on the side surfaces of the rolling assemblies;

two guide strips on the first guide rail are meshed with two sides of the annular grooves of the two groups of rolling assemblies on the first sliding seat, two guide strips on the second guide rail are meshed with two sides of the annular grooves of the two groups of rolling assemblies on the second sliding seat, and the first guide rail, the second guide rail and the guide rail hanging plate can slide relatively.

Compared with the prior art, the invention has the beneficial effects that:

1. the bolt is connected with the pin hole on the action part of the bolt driving device through the pin shaft on the bolt, and the whole structure and the connection mode are simple, so that the bolt driving device has the advantage of compact structure.

2. The lock tongue is in surface contact limit with the locking part, so that the stress is more stable and reliable.

3. The locking part and the locking part of the lock tongue have a certain distance after the door is closed, so that the lock tongue can be allowed to rotate.

4. The compact door lock device is further arranged in the half-height door unit structure, and the foldable guide rail structure is further arranged, is separated from the door transmission structure, has a compact and reasonable integral structure and can be applied to different working environments. The other advantages can also be seen in the details of the embodiments.

Drawings

Fig. 1 is an isometric view of a locking bolt assembly of an embodiment.

Fig. 2 is a schematic view of a tongue in an embodiment.

Fig. 3 (a) - (c) are schematic diagrams of the locking process of the locking portion and the locking tongue in the embodiment.

Fig. 4 is a schematic diagram of a latch bolt coupled to an electromagnet actuator in an embodiment.

Fig. 5 (a) - (b) are schematic diagrams of the electromagnet driver driving the latch bolt to rotate in the embodiment.

Fig. 6 is a partial enlarged view of P in fig. 5 (a).

Fig. 7 is an isometric view of a mount in an embodiment.

Fig. 8 is an isometric view of a latch assembly with a mounting block in an embodiment, and also showing a travel switch.

Fig. 9 is an axial schematic view of a manual unlocking device disposed on a baffle in an embodiment.

Fig. 10 is a schematic view of an embodiment in which the locking bolt and the locking portion are unlocked together.

Fig. 11 is a schematic view of an embodiment in which the locking tongue and locking element are unlocked.

Fig. 12 is an axial schematic view of the rail structure of the embodiment.

Fig. 13 is a left side view of fig. 12, with the dust cap omitted.

Fig. 14 is an exploded view of fig. 13.

Fig. 15 is an exploded view showing the positional relationship of the second rail, the rail hanging plate, and the first rail in the fully retracted state, wherein the direction of the disassembly is the width direction.

Fig. 16 is an exploded view showing the positional relationship of the second rail, rail mount plate, and first rail in the fully extended state, in which the direction of the decomposition is the width direction.

Fig. 17 is a schematic cross-sectional view of the lower portion of the rail hanger plate coupled to the first rail.

Fig. 18 is a schematic view of the first slider in fig. 17.

Fig. 19 is an isometric view of fig. 12 omitting the first and second rails.

Fig. 20 is an axial schematic view of fig. 12 omitting the first rail and the second rail, the view direction in the drawing being opposite to the view direction of fig. 19.

Fig. 21 is an axial schematic view of a half-gate unit structure of an embodiment.

Fig. 22 is a right side view of fig. 21.

Fig. 23 is a partial enlarged view of Q in fig. 22.

Fig. 24 is a partial enlarged view of R in fig. 22, in which: fill the illustration to limit slide and horizontal frame in order to distinguish.

Fig. 25 is an exploded view of the limit slide and cross frame of fig. 24.

Fig. 26 is an axial schematic view of the lower portion of the half-height gate unit structure of the embodiment.

Fig. 27 is a schematic view of fig. 21 omitting the structure of the limit slide plate and the cross frame portion.

Fig. 28 is a partial enlarged view at M in fig. 27.

Description of the figure:

100. door lock apparatus, 110, bolt shaft, 120, bolt, 121, head, 122, middle, 123, tail, 124, through hole in bolt, 125, locking portion, 126, guide surface, 127, pin, 128, step, 130, spring, 140, electromagnet drive, 141, action component, 142, pin hole, 150, mount, 151, U-shaped frame, 152, web, 153, ledge, 154, connecting hole, 160, locking portion, 161, baffle, 162, rectangular through hole, 163, fixed plate, 164, stop pin, 170, pivot, 171, ledge, 172, torsion spring, 173, rotating handle, 174, detection portion, 180, travel switch.

200. The device comprises a guide rail hanging plate 201, a first sliding seat 202, a second sliding seat 203, a nut groove 204, a shaft hole 205, an eccentric nut 2050, an eccentric screw hole 206, a mandrel 207, a dust-proof plate 210, a first guide rail 211, a groove 212, a guide strip 220, a second guide rail 221, a groove 222, a guide strip 230, a rolling assembly 231, an annular groove 240 and a limit screw.

300. Side box, 301, guide rail mounting seat, 302, limit slide plate, 303, T-shaped groove, 304 and slide block.

400. Door body, 401, transverse frame, 402, T-shaped strip, 403, transmission rack, 404, rotary handle, 410, driving device, 411, gear, 412, driving motor, 413 and gearbox.

Detailed Description

The invention is further described below with reference to the drawings and specific examples.

Example 1

The door lock device of the embodiment comprises a lock tongue assembly and a locking part, wherein the lock tongue assembly is arranged on the side box when in use, and the locking part is arranged on the door body.

Referring to fig. 1, the latch bolt assembly mainly includes a latch bolt shaft 110, a latch bolt 120, and a spring 130.

Referring to fig. 2, the latch 120 may be divided into three parts, including a head 121 at one end, a tail 123 at the other end, and a middle 122 connected between the head 121 and the tail 123. In this embodiment, the middle part 122 of the lock tongue 120 is provided with a through hole 124, and the lock tongue shaft 110 is inserted into the through hole 124 in the middle part of the lock tongue 120, so that the lock tongue 120 is sleeved on the lock tongue shaft 110.

One end of the spring 130 is fixed to the tongue 120, and the other end of the spring 130 is fixed. At ordinary times, the bolt 120 is at an initial position, and when the bolt 120 is driven by external force to rotate around the axis of the bolt shaft 110, the spring 130 is deformed; when the external force is removed, the spring 130 returns to the original position to return the tongue 120.

The head of the lock tongue 120 is provided with a protruding locking portion 125, wherein the locking portion 125 is substantially triangular, and an outer end surface of the locking portion 125 is a guide surface 126. The guide surface 126 is a plane and forms an angle with the bolt body. The locking portion 125 is convex, so a half-surrounded step 128 is formed at the inner side end surface of the locking portion 125.

Fig. 3 (a) to (c) show the locking process as follows:

referring to fig. 3 (a), when approaching the tongue 120, the locking portion 160 first abuts against the locking portion 125 on the head of the tongue 120;

referring to fig. 3 (B), the locking portion 160 continues to feed in the direction indicated by arrow a, and the locking portion 125 and the guide surface 126 slide relatively, so that the feeding direction of the locking portion 125 is unchanged, and the guide surface 126 of the tongue 120 is pushed by the pushing force to rotate clockwise in the direction indicated by arrow B;

referring to fig. 3 (c), when the locking portion 160 passes the inner end surface of the locking portion 125, the locking portion 160 is separated from the guide surface 126 of the latch 120, and the latch 120 is not forced any more, and rotates counterclockwise to reset under the action of the spring 130, so that the locking portion 160 is blocked at the step 128 inside the inner end surface of the locking portion 125, and the inner end surface of the locking portion 125 is blocked outside the locking portion 160, thereby realizing locking.

If unlocking is required, the lock tongue 120 is rotated in the opposite direction of arrow B in the figure, so that the locking portion 160 is separated from the step 128 inside the inner end surface of the locking portion 125, so that the inner end surface of the locking portion 125 is no longer blocked outside the locking portion 160, and then the locking portion 160 is moved in the opposite direction of arrow a in the figure, so as to be far away from the lock tongue 120.

During locking, the lock tongue 120 and the locking part 160 are in surface contact and limit, so that the stress is more stable and reliable. And the whole structure is simple and compact, and the application is flexible.

Preferably, the spring 130 is a torsion spring, and is sleeved on the lock tongue shaft 110, so as to further improve the compactness of the overall structure.

In order to rotate the latch bolt 120, a latch bolt driving device is further provided in the door lock device.

Referring to fig. 4, for ease of automatic control, the latch bolt driving device is an electromagnet actuator 140, and the electromagnet actuator 140 has an extendable or retractable actuating member 141. Since the electromagnet driver is a conventional technology, a description thereof will not be repeated here.

As shown in fig. 5 (a), the actuating member 141 is coupled to the latch bolt 120.

Referring again to fig. 5 (b), the actuating member 141 is retracted to drive the latch bolt 120 to rotate. When the actuating member 141 is extended, the tongue 120 is pivoted by the restoring force of the spring 130.

As shown in fig. 6, after the locking portion 160 is locked with the latch bolt 120, the locking portion 160 is moved rightward by a certain distance with reference to the direction shown in fig. 6, so that the locking portion 160 is spaced from the inner end surface of the locking portion 125 of the latch bolt 120 by a certain distance. In fig. 6: the arrow E points to the edge of the locking portion 125, which is adjacent to the locking portion 160, and which is rotated along a trajectory indicated by an arc-shaped broken line S1. The locking portion 160 is already spaced from the locking portion 125 of the locking bolt 120 to allow the locking bolt 120 to rotate.

Since the latch 120 has a rotational stroke, the transmission structure is simplified. A pin 127 is fixedly connected to the latch 120. Since pin 127 is fixed with locking bolt 120, the distance from pin 127 to the axis of rotation of locking bolt 10 is not variable, i.e., the trajectory of the axis of pin 127 is an arc as shown by dashed line S.

Obviously, referring to the direction shown in fig. 5, the pin 127 has a displacement component in the up and down direction and a component in the left and right direction when rotating with the tongue 120.

In this regard, the actuating member 141 of the electromagnet actuator 140 is further provided with a pin hole 142, wherein: the pin hole 142 has a larger diameter than the pin shaft 127, thereby allowing the pin shaft 127 to slide along the inner wall of the pin hole 142.

When the actuating member 141 of the electromagnet actuator 140 moves only linearly, the pin 127 slides along the inner wall of the pin hole 142, and the freedom of the pin 127 in the left-right direction is released, so that the actuating member 141 pulls the latch 120 to rotate.

In the invention, the connection structure between the electromagnet driver 140 and the lock tongue 120 is simple, and the reliability is improved.

Preferably, in this embodiment, the latch bolt assembly further includes a mounting base 150.

Referring to fig. 7 and 8, the mounting base 150 is mainly formed by a U-shaped frame 151.

Both ends of the latch bolt shaft 110 are correspondingly connected to both side walls of the U-shaped frame 151. As a preferred connection method, both ends of latch bolt shaft 110 are connected to both side walls forming an opening in the "U" shape of U-shaped frame 151. Wherein:

the latch bolt shaft 110 may be fixed to the U-shaped frame 151, at this time, the latch bolt 120 and the latch bolt shaft 110 are configured to be rotatably sleeved, and the other end of the spring 130 is fixed to the U-shaped frame 151 or the latch bolt shaft 110. Under the matching relationship, the lock tongue 120 rotates, and one end of the spring 130 also acts along with the lock tongue 120, so that the spring 130 deforms.

Alternatively, two ends of the latch bolt shaft 110 may be rotatably connected to the U-shaped frame 151, at this time, the latch bolt 120 and the latch bolt shaft 110 are configured to be fixedly sleeved, and the other end of the spring 130 is fixed to the U-shaped frame 151. Under the matching relationship, the lock tongue 120 and the lock tongue shaft 110 synchronously rotate, and meanwhile, one end of the spring 130 also acts along with the lock tongue 120 and the lock tongue shaft 110, so that the spring 130 is deformed.

Obviously, the fixed end of the spring 130 is fixed in a fixed position relative to the tongue 120.

Preferably, the fixing position of the latch bolt shaft 110 is close to the edge of the opening formed between the two side walls of the U-shaped frame 151, so as to form a certain accommodating space between the latch bolt shaft 110 and the U-shaped frame 151.

The head of the lock tongue 120 protrudes out of the opening of the U-shaped frame 151. The bolt driving device is fixed in the U-shaped frame 151.

The U-shaped frame 151 has three sequentially adjacent open faces. The U-shaped frame 151 is further fixedly connected with a connecting plate 152, specifically, the end of one side open surface of the U-shaped frame 151 is fixed on the connecting plate 152, so that two adjacent open surfaces remain in the U-shaped frame 151.

As described above, the mount 150 has two adjacent open surfaces as a whole, and forms a semi-enclosed structure. The fixed position of the latch bolt shaft 110 is close to the adjacent position of the two adjacent open surfaces, i.e. one end along the length direction of the U-shaped frame 151, and the connecting plate 152 is fixedly connected to the other end of the U-shaped frame 151.

The transverse cross-sectional dimension of the U-shaped frame 151 is smaller than that of the connecting plate 152, so the connecting plate 152 is provided with a protruding edge 153 protruding out of the U-shaped frame 151, and the protruding edge is provided with a plurality of connecting holes 154, which is convenient for fixing connection.

The door lock device has the special point of modularization, and the bolt assembly is compact in structure and convenient to install. The mount 150 is integrally fixed to the target mounting position by a fixing member such as a screw.

Referring to fig. 9, the locking portion 160 is preferably provided on a baffle 161. The baffle 161 is provided with a rectangular through hole 162, and the locking part 160 is formed at one side of the rectangular through hole 162.

In order to realize manual unlocking, the door lock device is further provided with a manual unlocking device, which comprises a rotating shaft 170, a protruding part 171 fixed on the rotating shaft 170 and extending outwards along the radial direction of the rotating shaft 170, and a torsion spring 172 sleeved on the rotating shaft 170, wherein:

the position of the shaft 170 is fixed, but rotatable;

one end of the torsion spring 172 is fixed with the rotating shaft 170 and can rotate along with the rotating shaft 170; the other end of the torsion spring 172 is fixed.

The fixing manner of the rotation shaft 170 is not limited. For easy installation, in this embodiment, as a preferred manner, a fixing plate 163 is fixedly connected to the baffle 161, and a connection hole (not shown) is provided in the fixing plate 163. The fixing plate 163 is sleeved on the rotating shaft 170 by means of a connecting hole on the fixing plate, and the rotating shaft 170 can rotate in the connecting hole. The upper end of the rotation shaft 170 is further provided with a fixing member such as a nut to couple the upper end of the rotation shaft 170 with the fixing plate 163 to prevent falling off.

The other end of the torsion spring 172 is fixed to the fixing plate 163, similarly to the function and principle of the spring 130.

Normally, the protrusion 171 on the rotating shaft 170 is at the initial position and is offset from the locking tongue 120, and even when the locking portion 160 on the baffle 161 is locked with the locking tongue 120, the protrusion 171 will not abut against the locking tongue 120, so that the normal locked state can be maintained.

When the unlocking is needed by the manual unlocking device, the rotating shaft 170 is rotated, so that the protruding portion 171 on the rotating shaft 170 abuts against the other end, i.e. the tail 123, of the lock tongue 120, opposite to the other end, where the locking portion 125 is provided, of the lock tongue 120, the lock tongue 120 can be driven to rotate, and meanwhile, the torsion spring 172 deforms, so that unlocking is achieved. When the external force to rotate the rotation shaft 170 is removed, the torsion spring 172 is restored to drive the rotation shaft 170 to rotate back to the initial position.

For easy operation and transmission, the rotating shaft 170 is provided with a rotating handle 173. One end of the rotating handle 173 is fixed to the rotating shaft 170, and the other end is connected to a brake cable (not shown), and the rotating handle 173 is rotated by pulling the brake cable, thereby driving the rotating shaft 170 to rotate.

Further, the fixing plate 163 is further provided with two limiting pins 164, wherein a certain distance is provided between the two limiting pins 164, and the two limiting pins 164 are located at two sides of the rotating handle 173, for limiting the rotation range of the rotating handle 173, so as to avoid overlarge rotation angle of the rotating handle 173.

As shown in fig. 8 and 9, further, in order to collect a manual unlocking signal, the latch assembly is provided with a travel switch 180, specifically, the latch assembly may be mounted on the U-shaped frame 151 of the mounting base 150, and the protrusion 171 of the rotating shaft 170 is provided with a detection portion 174 for triggering the travel switch 180 to generate a detection signal. As the protrusion 171 pushes the latch 120 against the latch 120 to rotate, the detection part 174 does not contact or approach the travel switch 180 to generate a signal under normal conditions because the rotation shaft 170 is not rotated to the unlocking position; the travel switch 180 can be triggered to generate a signal only when the rotation shaft 170 is unlocked after rotation.

Fig. 10 and 11 show the door lock apparatus in the unlocked state and the locked state, respectively. In fig. 11, the direction indicated by an arrow OP is the door opening direction, and the direction indicated by an arrow CL is the door closing direction.

The mounting base 150 is fixedly mounted on the side case, so that the position thereof is fixed; the locking portion 160 is configured to be mounted to the door body.

When the door body is unlocked, the positional relationship between the locking portion 160 and the tongue 120 is substantially as shown in fig. 10. When the door is closed, the locking portion 160 moves along with the door body in the direction indicated by the arrow OP, the head of the latch bolt 120 passes through the rectangular through hole 162, and then the locking portion 160 is blocked inside the locking portion of the latch bolt 120, so as to achieve the locked state shown in fig. 11.

When the door needs to be opened, the electromagnet driver 140 or the manual unlocking device drives the lock tongue 120 to rotate, so as to unlock the lock tongue 120 and the locking part 160. Subsequently, the lock 160 moves in the direction indicated by the arrow CL together with the door body, and returns to the unlock state shown in fig. 10.

Example 2

Referring to fig. 12, the slide rail structure of the present embodiment mainly includes a rail hanger 200, and a first rail 210 and a second rail 220 coupled with the rail hanger 200.

As shown in fig. 13 and 14, the rail hanger plate 200 is divided into upper and lower portions along a length direction thereof, i.e., a horizontal direction.

A groove 211 is formed on one side surface of the first guide rail 210, and two symmetrical and protruding guide bars 212 are formed on two opposite side walls in the groove 211. The second rail 220 and the first rail 210 have substantially the same structure, and thus are not described in detail. The difference between the two is that a proper length can be set according to actual needs. The second rail 220 is used to connect with the door body, so the length of the second rail 220 is generally longer than the length of the first rail 210.

A first sliding seat 201 is fixed at the lower part of the rail hanging plate 200, and a second sliding seat 202 is fixed at the upper part of the rail hanging plate 200. The first and

second carriages

201, 202 are each provided with two sets of rolling assemblies 230 which are staggered in height and can rotate.

The rolling members 230 are each provided with an annular groove 231 around the circumference thereof on the side surfaces thereof. Two guide bars 212 on the first guide rail 210 are clamped at two sides of the annular grooves 231 of the two sets of rolling assemblies 230 on the first slide 201, and two guide bars 222 on the second guide rail 220 are clamped at the annular grooves 231 of the two sets of rolling assemblies 230 on the second slide 202. Specifically, for the two guide bars 212/222, one of them is clamped at the upper side of the annular groove 231 of one set of rolling assemblies 230, and the other is clamped at the lower side of the annular groove 231 of the other set of rolling assemblies 230, so as to allow the first guide rail 210 or the second guide rail 220 to move, the rotation directions of the two sets of rolling assemblies 230 are opposite. Therefore, it is easy to understand that the two sets of rolling assemblies 230 on the first carriage 201 and the second carriage 202 need only be staggered up and down by a small height difference, specifically, the upper and lower side edges of the two sets of rolling assemblies 230 need to be staggered.

The first guide rail 210, the second guide rail 220 and the guide rail hanging plate 200 are connected through the cooperation of guide bars and annular grooves on the rolling assembly. The

grooves

211, 221 on the two

guide rails

210, 220 are internally provided with symmetrical guide bars 212, 222 to form a groove structure similar to a T shape, so that the

guide rails

210, 220 and the guide rail hanging plate 200 cannot be separated, but can only relatively slide along the length direction of the guide bars 212, 222.

The first guide rail 210 is coupled to the lower portion of the guide rail hanging plate 200, and can slide relatively therebetween; the second rail 220 is coupled to the upper portion of the rail hanger plate 200 so as to be relatively slidable therebetween. Meanwhile, the relative positions of the first guide rail 210 and the second guide rail 220 are approximately parallel and side by side, so that the structure is compact.

In use, the first rail 210 is fixed and the second rail 220 is fixed to the door body.

Assuming that the rail hanger 200 is held stationary with respect to the first rail 210, the second rail 220 moves together with the door body when the door body is moved, and at this time, the second rail 220 slides with respect to the rail hanger 200. Then, when the second rail 220 and the rail hanging plate 200 cannot slide any more, the second rail 220 and the rail hanging plate 200 move together with the door body, and the rail hanging plate 200 slides relative to the first rail 210.

Obviously, the second guide rail 220, the guide rail hanging plate 200 and the first guide rail 210 form a two-stage track, wherein: the second rail 220 and the rail hanger plate 200 form one stage, and the rail hanger plate 200 and the first rail 210 form another stage therebetween. When the two-stage track works, the first stage and the second stage are not distinguished, and the two-stage track can slide simultaneously or slide independently and sequentially.

The sliding rail structure has three states, one is a state that the second guide rail 220, the guide rail hanging plate 200 and the first guide rail 210 are completely folded and are in the shortest overall length, the other is a state that the sliding rail is completely unfolded and is in the longest overall length, and the other is a state that the sliding rail is partially unfolded between the complete folding and the complete unfolding.

Therefore, the sliding rail structure of the embodiment can be folded under the condition of need to save space.

Preferably, the two side ends of the first rail 210 and the second rail 220 are respectively provided with a limit screw 240, which is correspondingly blocked on the outer side of the first sliding seat 201 or the second sliding seat 202, so as to prevent the first rail 210 from being separated from the first sliding seat 201 and the second rail 220 from being separated from the first sliding seat 202.

Referring to fig. 15, the first rail 210 and the rail hanging plate 200 preferably have substantially the same length, and the sum of the length of the first rail 210 and the length of the rail hanging plate 200 is substantially the same as the length of the second rail 220. Thus, the lengths of the rail hanging plate 200 and the first rail 210 are not greater than the length of the second rail 220, and when the three rails are completely folded together, the total length of the sliding rail structure is substantially the same as the length of the second rail 200, and the occupied space is less.

Preferably, the guide bars 212, 222 on the first and

second rails

210, 220 substantially match the cross-sectional shape and size of both the annular grooves 231 on the rolling assembly 230.

Preferably, the side surface of the rail hanging plate 200 is shaped like an S, and accordingly, a C-shaped groove is formed at the front side of the upper portion of the rail hanging plate 200, and another C-shaped groove is formed at the rear side of the lower portion of the rail hanging plate 200, and the opening directions of the two C-shaped grooves are opposite. The first sliding seat 201 is fixed in the C-shaped groove at the upper part of the guide rail hanging plate 200, and the second sliding seat 202 is fixed in the C-shaped groove at the lower part of the guide rail hanging plate 200. In this way, interference between the connection objects of the two guide rails is avoided.

Preferably, the rolling assembly 230 is mainly composed of bearings.

As shown in fig. 17 and 18, further, a nut groove 203 is provided on the inner side of the first slide 201, and a shaft hole 204 penetrating the first slide 201 is provided in the middle of the nut groove 203. The nut groove 203 is configured to receive an eccentric nut 205.

One end of a mandrel 206 is inserted through the shaft hole 204 and is fixedly connected to the eccentric screw hole 2050 of the eccentric nut 205 in the nut groove 203, and the other end of the mandrel 206 is exposed to the outside of the first slide 201.

The bore diameter of the shaft hole 204 is larger than the outer diameter of the spindle 206, the rolling assembly 230 is sleeved on the spindle 206, and the spindle 206 is eccentric relative to the central axis of the nut 205. Obviously, the aperture of the shaft hole 204 is smaller than the width of the nut groove 204. In this manner, when the eccentric nut 205 is rotated, the height of the spindle 206 is varied, thereby allowing fine adjustment of the height of the rolling assembly 230, ensuring that the annular groove 231 on the rolling assembly 230 is able to adequately engage the guide bar 212 on the guide rail.

The eccentric nut 205 and the spindle 206 may be fixed by a screw fitting by a fixing member such as a screw (not shown in the drawings), wherein the screw penetrates into the eccentric screw hole 2050 from one side of the eccentric nut 205 and further penetrates into the spindle 206. When assembled together, the spindle 206 and the rolling assembly 230 abut against one side of the first slider 201, and the eccentric nut 205 abuts against the inner end surface of the nut groove 204, and the eccentric nut 205 is fixed by static friction to prevent any rotation thereof. The eccentric nut 205 may be loosened when the height of the rolling assembly 230 is adjusted.

In the present embodiment, as shown in fig. 20, three rolling assemblies 230 are provided on the first slider 201. In a preferred embodiment, among the three rolling assemblies 230, the rolling assembly 230 located in the middle is set as one group, and is configured as a height-adjustable assembly structure by the eccentric nut 205, and two rolling assemblies 230 on both sides thereof are set as the other group, and are directly fixed to the first slider 201 by a fixing member such as a spindle.

In this way, the height of the middle rolling element 230 is adjustable, so that the distance from the upper edge of the middle rolling element 230 to the lower edges of the rolling elements 230 at both sides is adjustable to adapt to the distance between the two guide bars 212 on the guide rail.

The three rolling members 230 are identical, and when the height of the rolling member 230 positioned in the middle is changed, for example, higher than the rolling members 230 positioned at both sides thereof, the upper side of the annular groove 231 of the rolling member 230 positioned in the middle is engaged with the guide bar 212 positioned above, and the lower side of the annular groove 231 of the rolling member 230 positioned at both sides is engaged with the guide bar 212 positioned below.

Similarly, as shown in fig. 19, the second carriage 202 is also provided with three rolling assemblies 230 in the same manner as the first carriage 201.

Obviously, the number of rolling elements on each carriage can also be adjusted as desired.

Preferably, the rail hanging plate 200 is provided with two first sliding seats 201 and two second sliding seats 202.

The rail hanger plate 200 may be equally divided into left and right portions from a transverse direction, the transverse position being indicated by an arrow T.

With reference to the direction shown in fig. 19, and in conjunction with fig. 20, preferably, the two first carriages 201: a first slider 201 is provided at the left end of the rail hanger plate 200; the other first slider 201 is disposed at the left portion of the rail hanger plate 200 and is close to the transverse position at the middle portion of the rail hanger plate 200.

With reference to the direction shown in fig. 19, among the two second carriages 202: a second slider 202 is provided at the right-side end of the rail hanger plate 200; the other second slider 202 is disposed at the right portion of the rail hanger plate 200 and near the transverse position at the middle portion of the rail hanger plate 200.

In this way, the first slider 201 and the second slider 202 located at the middle of the rail hanging plate 200 are adjacent to each other in the vertical direction. Referring to fig. 16, when the first rail 210, the rail hanger plate 200, and the second rail 220 are fully unfolded:

the two first sliders 201 between the first rail 210 and the rail hanger plate 200 are still engaged with each other without being separated, and thus, half of the length of the rail hanger plate 200 overlaps with the first rail 210;

the two second carriages 202 between the second rail 220 and the rail hanger plate 200 are still engaged with each other without being separated, and thus, half of the length of the rail hanger plate 200 overlaps with the second rail 220.

For the length L10 of the guide rail, the length L20 of the second guide rail, the length L30 of the guide rail hanging plate, obviously, when fully unfolded, the total length of the guide rail structure: (l10-1/2×l30) + (l20-1/2×l30) +l30=l10+l20, wherein the symbol "×" denotes multiplication.

Thus, the whole specific length of the guide rail structure is in the range of 0-L10, and two sliding seats are arranged between the first guide rail 210, the second guide rail 220 and the guide rail hanging plate 200 to be matched, so that the guide rail structure has higher supporting capacity and stability.

If necessary, the first sliding seat 201 and the second sliding seat 202 located at the middle of the rail hanging plate 200 may be spaced apart from each other by a certain distance, that is, the middle of the rail hanging plate 200 is offset to the left or the right, where the length L31 of the middle of the rail hanging plate 200 does not overlap with the first rail 210 or the second rail 220 (not shown) when the rail hanging plate is fully unfolded, and the total length of the rail structure is l10+l20+l31, which can relatively further increase the length variation range of the rail structure.

Referring back to fig. 19 and 20, further, along the length direction of the rail hanging plate 200, the dust-proof plates 207 are disposed on both sides of the first sliding groove 201 and the second sliding groove 202, and the dust-proof plates 207 are substantially matched with the corresponding grooves 211 of the first rail 210 or the grooves 221 of the second rail 220, so that only a small gap is left, the movement of the rails is not affected by the dust-proof plates 207, and meanwhile, dust can be prevented from entering to a certain extent.

Example 3

As shown in fig. 21 and 22, the half-height door unit structure of the present embodiment mainly includes a side case 300, a door body 400, and a guide rail.

The door 400 is located at one side of the side case 300, and the guide rail is coupled to a lower portion of the door 400. The guide rail may adopt the guide rail structure of embodiment 2.

A guide rail mounting seat 301 is provided at one side of the lower end of the side case 300, and the guide rail mounting seat 301 is fixed to the ground.

As shown in fig. 23, in the guide rail structure: the second guide rail 220 is fixedly connected to the lower portion of the door body 400, and the first guide rail 210 is fixedly connected to the guide rail mounting seat 301.

As shown in fig. 24, a limit sliding plate 302 is further fixed to the upper edge of the side case 300, and can be matched with the upper portion of the door 400, so that the upper portion of the door 400 slides along the limit sliding plate 302. Under the combined action of the guide rail structure and the limit sliding plate 302, the door body 400 can be kept in a vertical state.

Referring again to fig. 25, the limiting slide plate 302 is preferably provided with a T-shaped slot 303. A transverse frame 401 is arranged at the outer edge of the upper part of the door body 400, and a T-shaped bar 402 is fixedly connected to the outer side of the transverse frame 401. Wherein:

the cross frame 401 and the T-shaped strip 402 are preferably integrated profiles. The T-shaped like bar 402 is matched and sleeved with the T-shaped like groove 303 on the limiting slide plate 302.

Two sliding blocks 304 sleeved on the limiting sliding plate 302 are further arranged at two sides of the notch of the T-shaped groove 303. When the T-shaped groove 303 is sleeved with the T-shaped strip 402, the sliding block 304 is clamped between the limiting sliding plate 302 and the T-shaped strip 402. The slider 304 may be made of a smooth surface or a low coefficient of friction material to reduce sliding friction.

As shown in fig. 23 and 26, a driving rack 403 is further fixed to the lower portion of the door body 400. Correspondingly, a driving device 410 with a gear 411 is provided, wherein the gear 411 is meshed with the transmission rack 403 and is used for driving the door 400 to move.

Preferably, the driving rack 403 is located relatively below the second rail 210. In the present embodiment, the transmission structure for driving the movement of the door body 400 is very simple and compact.

The driving device 410 may be disposed inside the rail mounting base 301. Preferably, the driving device 410 comprises a driving motor 412 and a gearbox 413 in transmission connection with the driving motor, and the gear 411 is arranged on an output shaft of the gearbox 413.

When the half-height door unit structure is used, the half-height door unit structure is symmetrically arranged, and a side-by-side door structure can be obtained, and is also a relatively common structure. And (3) periodically arranging two half-height door structures which are symmetrically arranged, and setting each unit in a door closing state to obtain a complete platform door from left to right of side box 300-door body 400-side box 300-door body 400-side box 300 … … ".

When the door is opened, the door body 400 in each unit needs to be folded to a corresponding position of the side case 300. The distance between the left and right side edges of the adjacent side cases 300 is sufficiently long as the distance between the left and right side edges of the side case 300 is sufficiently long, so that the problem of compactness is basically not considered, but the guide rail structure of embodiment 2 is adopted to reduce the space that the guide rail structure needs to occupy when closing the door in the longitudinal direction of the door body 400, so that the door can be more flexibly applied to platforms of various specifications.

In the present invention, the door body 400 has a simple transmission structure, and can reduce the occupation of space, especially along the length direction of the door body 400, so that much space is hardly occupied.

Referring to fig. 27 and 28, the half-height door unit structure is further provided with the door lock device of embodiment 1. The door body 400 is further provided with a baffle 161 of the door lock device, the baffle 161 is provided with the locking part 160, and the side box 300 is provided with a lock tongue assembly of the door lock device.

Referring to fig. 24, the latch bolt assembly is embedded in the side case 300, and does not affect the movement of the door body 400. The upper part of the side of the door body 400 is fixed with the baffle 161, and the baffle 161 partially extends into the side case 300, so that the locking part 160 at the inner edge of the baffle 161 can be locked and matched with the lock tongue 120, and the compactness of the half-height door unit structure is further improved.

Further, the door body 400 is further provided with a rotating handle 404, and the rotating handle 404 is coupled to a rotating handle 173 in the door lock device through a brake cable (not shown), and the rotating handle 404 drives the rotating handle 173 to rotate by means of the brake cable.

It should be understood that, in the present invention, the contents of each embodiment may be cited and combined with each other, and repeated descriptions for repeated contents or associated contents are not repeated.

The examples of the present invention are intended to be illustrative only and not to limit the scope of the claims, and other substantially equivalent substitutions will occur to those skilled in the art and are intended to be within the scope of the present invention.

Claims

1. A door lock device comprising a latch bolt assembly, wherein the latch bolt assembly comprises:

the bolt shaft is provided with a bolt,

a spring with one end fixed with the lock tongue and the other end fixed,

a deadbolt drive apparatus provided with a retractable motion feature, wherein:

2. The door lock device according to claim 1, wherein the spring is a torsion spring fitted around the lock bolt shaft.

3. The door lock apparatus according to claim 1, further comprising a manual unlocking means including a rotating shaft fixed in position, a protruding portion provided on the rotating shaft and extending outward in a radial direction of the rotating shaft, and a torsion spring having one end fixed with the rotating shaft and the other end fixed, wherein: when the rotating shaft is rotated under the action of external force, the protruding part on the rotating shaft is used for pushing the other end of the lock tongue opposite to the locking part so as to drive the lock tongue to rotate, and the torsion spring is deformed; when the external force on the rotating shaft disappears, the torsion spring is restored and drives the rotating shaft to reset.

4. The door lock apparatus of claim 3, wherein the latch bolt assembly further comprises a mount, the mount comprising a U-shaped frame;

the two ends of the lock tongue shaft are connected to the U-shaped frame, the locking part of the lock tongue extends out of the opening of the U-shaped frame, and the lock tongue driving device is fixed in the U-shaped frame.

5. The door lock apparatus according to claim 3, wherein the mount further comprises a connection plate, wherein:

one end of the U-shaped frame is fixed on the connecting plate;

the connecting plate is provided with a protruding edge protruding out of the U-shaped frame and provided with a connecting hole.

6. A door lock apparatus according to claim 3, wherein the locking portion is provided on a shutter, wherein:

the baffle is provided with a rectangular through hole, and the locking part is formed on one side of the rectangular through hole.

7. The door lock apparatus according to claim 6, wherein the baffle plate is provided with a fixing plate having a connection hole, and the rotation shaft is rotatably coupled to the connection hole of the fixing plate;

8. The door lock device according to claim 3, wherein the latch assembly is provided with a travel switch, and the protruding portion of the rotating shaft is provided with a detecting portion for triggering the travel switch to generate a detecting signal.

9. The door lock apparatus according to claim 1, wherein, when locked: a certain interval exists between the locking part and the locking part of the lock tongue.

10. A half-height door unit structure comprising a side box, a door body and a driving device for driving the door body to move, wherein the door lock device as claimed in any one of claims 1-5 and 8-9 is arranged on the side box;

11. The half height door unit structure according to claim 10, wherein a rail structure is coupled to one side of the lower portion of the door body, the rail structure comprising:

12. The half high door unit structure according to claim 10, wherein the side surface of the rail hanging plate is S-shaped, a C-shaped groove is formed at one side of the upper portion of the rail hanging plate, and another C-shaped groove is formed at the other side of the lower portion of the rail hanging plate;

the first sliding seat is fixed in a C-shaped groove at the upper part of the guide rail hanging plate, and the second sliding seat is fixed in a C-shaped groove at the lower part of the guide rail hanging plate.