A locking device for sliding door

Abstract

The utility model relates to the technical field of plug-in doors, and discloses a locking device for plug-in doors, comprising a frame, wherein two plug-in door bodies are arranged on the front side of the frame, the plug-in door bodies are arranged on the left and right, a locking assembly is commonly arranged on the rear side of the plug-in door bodies, a protective assembly is arranged on the opposite side of the plug-in door bodies, the locking assembly comprises a connecting block fixedly installed on the rear side of an adjacent plug-in door body close to the opposite side and two arc blocks slidably connected on the other side, a telescopic rod is fixedly installed at the middle position of the top of the arc block, a mounting block is fixedly installed at the top end of the telescopic rod, a reset spring is provided on the peripheral movable sleeve of the telescopic rod, when the connecting block is fitted, the round rod can be respectively engaged in the inner cavity of the adjacent groove, and the round rod can be stably inserted in the inner cavity of the adjacent groove under the coordinated use of the telescopic rod and the reset spring, thereby improving the locking effect of the plug-in door body.

Description

Technical Field

[0001] The utility model relates to the technical field of plug sliding doors, in particular to a locking device for plug sliding doors. Background Art

[0002] A plug door is a door that moves during the entire opening and closing process. When the door is closed, the outside of the door is flush with the body of the vehicle, and when the door is opened, it overlaps with the vehicle body. Most high-speed buses use an electric pneumatic plug door, but a small number of fast passenger buses use manual plug doors. The plug doors that are currently widely used use an embedded door control system as the control core, among which the locking system of the plug door is particularly important and is a safety barrier for the door.

[0003] Traditional double-opening plug-in doors are mostly driven by simple mechanical structures. Existing double-opening plug-in doors lack the locking function after the plug-in door is closed, which leads to the risk of the plug-in door being accidentally opened when the vehicle is driving on bumpy roads, thereby threatening the personal safety of passengers.

[0004] Therefore, we propose a locking device for a plug-type sliding door to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to provide a locking device for a plug door to solve the problems raised by the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a locking device for a plug sliding door, comprising a frame, wherein two plug sliding door bodies are arranged on the front side of the frame, the plug sliding door bodies are arranged on the left and right, a locking assembly is arranged on the rear side of the plug sliding door bodies, and a protective assembly is arranged on the opposite side of the plug sliding door bodies;

[0007] The locking assembly includes a connecting block fixedly installed on the rear side of the adjacent sliding door body near the opposite side and two arc blocks slidably connected on the other side. A telescopic rod is fixedly installed at the middle position of the top of the arc block, and a mounting block is fixedly installed at the top of the telescopic rod. A reset spring is provided on the peripheral movable sleeve of the telescopic rod, and the top and bottom ends of the reset spring are respectively fixedly connected to the adjacent arc blocks. Two round rods are fixedly installed on the rear side of the connecting block on one side near the middle position, and a slot is provided at the bottom of the arc block near one side, and the round rods are slidably inserted into the inner cavity of the adjacent slot.

[0008] Preferably, a handle is fixedly mounted on the rear side of the arc-shaped block on the other side.

[0009] Preferably, a vertical plate is fixedly installed near the middle position on the top of the frame, and a movable shaft is rotatably connected to the front side of the vertical plate. A rotating gear is fixedly installed on the end of the movable shaft. The first rack plate and the second rack plate are respectively meshed at the top and bottom of the rotating gear, and the first rack plate and the second rack plate are arranged front and back, and the bottoms of the first rack plate and the second rack plate are both slidably connected to the top of the frame, and the second connecting rod and the first connecting rod are respectively fixedly installed on the front sides of the second rack plate and the first rack plate near the side away from each other, and the front ends of the second connecting rod and the first connecting rod are respectively fixedly connected to the adjacent Sierra door body.

[0010] Preferably, a rectangular opening is provided on the front side of the Sierra door body, and a transparent glass is fixedly installed in the inner cavity of the rectangular opening, and a handle is fixedly installed on the front side of the Sierra door body close to the opposite side.

[0011] Preferably, the protective assembly includes a groove opened on one side of the sliding door body on the other side and a plurality of dampers fixedly installed on the other side of the inner cavity of the groove, and protective pads are fixedly installed on the ends of the dampers. Damping springs are movably sleeved on the outer periphery of the dampers, and the two ends of the damping springs are respectively fixedly connected to the protective pad and the other side of the inner cavity of the groove, and a sealing gasket is fixedly installed on the other side of the sliding door body on one side.

[0012] Preferably, one side of the protective pad is slightly higher than the depth of the inner cavity of the groove.

[0013] Preferably, the sealing gasket is made of rubber material.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. By setting up a locking assembly, when the connecting blocks are fitted, the round rods can be respectively engaged in the inner cavities of adjacent grooves. With the coordinated use of the telescopic rod and the return spring, the round rods can be stably inserted in the inner cavities of adjacent grooves, thereby improving the locking effect of the plug door body.

[0016] 2. By setting up a protective component, during the process of bonding the Sierra door body, by setting up a damper and a damping spring, it is possible to avoid hard collision when the Sierra door body is closed, which may cause damage to the door body, thereby extending the service life of the Sierra door body, and by setting a sealing gasket, the sealing performance of the Sierra door body during bonding is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the utility model from another viewing angle;

[0019] Figure 3This is an exploded view of the main body of the plug sliding door of the utility model;

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the first rack plate, the second rack plate and the rotating gear of the utility model;

[0021] Figure 5 For the utility model Figure 2 Enlarged view of point A in the middle;

[0022] Figure 6 For the utility model Figure 3 Enlarged view of point B in the middle.

[0023] In the figure: 1. frame; 11. vertical plate; 12. movable shaft; 13. first rack plate; 14. first connecting rod; 15. second rack plate; 16. second connecting rod; 17. rotating gear; 2. Sierra door body; 21. handle; 22. transparent glass; 3. locking assembly; 31. connecting block; 32. arc block; 321. grip; 33. round rod; 34. telescopic rod; 35. reset spring; 36. mounting block; 4. protective assembly; 41. groove; 42. damper; 43. damping spring; 44. protective pad; 45. sealing pad. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example 1: Please refer to Figure 1-6 A locking device for a plug sliding door comprises a frame 1, two plug sliding door bodies 2 are arranged on the front side of the frame 1, the plug sliding door bodies 2 are arranged on the left and right, a locking assembly 3 is arranged on the rear side of the plug sliding door bodies 2, and a protective assembly 4 is arranged on the opposite side of the plug sliding door bodies 2;

[0026] The locking assembly 3 includes a connecting block 31 fixedly installed on the rear side of the adjacent sliding door body 2 near the opposite side and two arc blocks 32 slidably connected on the other side. A telescopic rod 34 is fixedly installed at the middle position of the top of the arc block 32, and a mounting block 36 is fixedly installed at the top of the telescopic rod 34. A reset spring 35 is provided on the outer peripheral movable sleeve of the telescopic rod 34, and the top and bottom ends of the reset spring 35 are respectively fixedly connected to the adjacent arc block 32. Two round rods 33 are fixedly installed on the rear side of the connecting block 31 on one side near the middle position, and a card groove is opened at the bottom of the arc block 32 near one side. The round rods 33 are slidably inserted into the inner cavity of the adjacent card grooves respectively. When the connecting block 31 is fitted, the round rods 33 can be respectively engaged in the inner cavity of the adjacent grooves. With the coordinated use of the telescopic rod 34 and the reset spring 35, the round rods 33 can be stably inserted into the inner cavity of the adjacent groove, thereby improving the locking effect of the sliding door body 2.

[0027] A handle 321 is fixedly installed on the rear side of the arc block 32 on the other side. The handle 321 is provided to facilitate the staff to unlock at the same time.

[0028] A vertical plate 11 is fixedly installed near the middle position of the top of the frame 1, and a movable shaft 12 is rotatably connected to the front side of the vertical plate 11. A rotating gear 17 is fixedly installed at the end of the movable shaft 12. The first rack plate 13 and the second rack plate 15 are respectively meshed at the top and bottom of the rotating gear 17, and the first rack plate 13 and the second rack plate 15 are arranged front and back, and the bottoms of the first rack plate 13 and the second rack plate 15 are both slidably connected to the top of the frame 1, and the second connecting rod 16 and the first connecting rod 14 are respectively fixedly installed on the front sides of the second rack plate 15 and the first rack plate 13 near the side away from each other, and the front ends of the second connecting rod 16 and the first connecting rod 14 are respectively fixedly connected to the adjacent sliding door body 2, and when the sliding door body 2 on one side moves, the sliding door body 2 on the other side can be moved by the cooperation of the first rack plate 13, the second rack plate 15 and the rotating gear 17, the first connecting rod and the second connecting rod.

[0029] A rectangular opening is provided on the front side of the Sierra door body 2, and a transparent glass 22 is fixedly installed in the inner cavity of the rectangular opening. A handle 21 is fixedly installed on the opposite side of the front side of the Sierra door body 2.

[0030] Embodiment 2: This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 3 and Figure 6The protective component 4 includes a groove 41 opened on one side of the other side of the plug door body 2 and a plurality of dampers 42 fixedly installed on the other side of the inner cavity of the groove 41. The ends of the dampers 42 are commonly fixedly installed with protective pads 44. The outer periphery of the dampers 42 is movably sleeved with damping springs 43, and the two ends of the damping springs 43 are respectively fixedly connected to the protective pads 44 and the other side of the inner cavity of the groove 41. A sealing gasket 45 is fixedly installed on the other side of the plug door body 2 on one side. During the bonding process of the plug door body 2, the dampers 42 and the damping springs 43 are arranged to avoid hard collisions when the plug door body 2 is closed, which may cause damage to the plug door body 2, thereby extending the service life of the plug door body 2, and the sealing gasket 45 is arranged to improve the sealing of the plug door body 2 when it is bonded.

[0031] One side of the protection pad 44 is slightly higher than the depth of the inner cavity of the groove 41 .

[0032] The sealing gasket 45 is made of rubber material.

[0033] Working principle: When the utility model is in use, when the Sierra door body 2 is closed, since the end of the arc block 32 is arranged in an arc shape, during the process of the Sierra door body 2 being fitted together, the arc block 32 can be moved to the opposite side. When the Sierra door body 2 is fitted together, the round rod 33 is movably inserted in the inner cavity of the groove. By setting a reset spring 35, the round rod 33 can be stably inserted in the inner cavity of the groove, thereby improving the locking effect of the Sierra door body 2. When it is necessary to get on the vehicle, the arc block 32 can be pushed upward by the handle 321, so that the groove opened at the bottom of the arc block 32 can be moved away from the outer periphery of the adjacent round rod 33, and can contact the locking of the two Sierra door bodies 2. During the process of the Sierra door body 2 being fitted together, the damper 42 and the damping spring 43 can be set to avoid hard collision when the Sierra door body 2 is closed, which may cause damage to the Sierra door body 2, thereby extending the service life of the Sierra door body 2, and the sealing gasket 45 can be set to improve the sealing of the Sierra door body 2 when it is fitted together.

[0034] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0035] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A locking device for a plug door, comprising a frame (1), characterized in that: Two plug-in door bodies (2) are arranged on the front side of the frame (1), the plug-in door bodies (2) are arranged on the left and right, a locking assembly (3) is arranged on the rear side of the plug-in door bodies (2), and a protective assembly (4) is arranged on the opposite side of the plug-in door bodies (2); The locking assembly (3) comprises a connecting block (31) fixedly mounted on the rear side of an adjacent plug door body (2) near one opposite side and two arc blocks (32) slidably connected on the other side; a telescopic rod (34) is fixedly mounted at the middle position of the top of each arc block (32); a mounting block (36) is fixedly mounted at the top of each telescopic rod (34); a return spring (35) is provided on the outer peripheral movable sleeve of the telescopic rod (34); and the top and bottom ends of the return spring (35) are respectively fixedly connected to the adjacent arc block (32); two round rods (33) are fixedly mounted on the rear side of one connecting block (31) near the middle position; a slot is provided at the bottom of each arc block (32) near one side, and the round rods (33) are respectively slidably inserted into the inner cavity of the adjacent slot.

2. A locking device for a plug door according to claim 1, characterized in that: A handle (321) is fixedly mounted on the rear side of the arc-shaped block (32) on the other side.

3. A locking device for a plug door according to claim 1, characterized in that: A vertical plate (11) is fixedly installed near the middle position of the top of the frame (1), and a movable shaft (12) is rotatably connected to the front side of the vertical plate (11). A rotating gear (17) is fixedly installed at the end of the movable shaft (12). A first rack plate (13) and a second rack plate (15) are respectively meshed at the top and bottom of the rotating gear (17), and the first rack plate (13) and the second rack plate (15) are arranged front and back. The bottoms of the first rack plate (13) and the second rack plate (15) are both slidably connected to the top of the frame (1), and a second connecting rod (16) and a first connecting rod (14) are respectively fixedly installed on the front sides of the second rack plate (15) and the first rack plate (13) near the side away from each other, and the front ends of the second connecting rod (16) and the first connecting rod (14) are respectively fixedly connected to the adjacent sliding door body (2).

4. A locking device for a plug door according to claim 1, characterized in that: The front side of the plug-type sliding door body (2) is provided with a rectangular opening, and the inner cavity of the rectangular opening is fixedly installed with a transparent glass (22), and the front side of the plug-type sliding door body (2) close to the opposite side is fixedly installed with a handle (21).

5. The locking device for a plug door according to claim 1, characterized in that: The protection assembly (4) comprises a groove (41) opened on one side of the plug door body (2) on the other side and a plurality of dampers (42) fixedly mounted on the other side of the inner cavity of the groove (41); the ends of the dampers (42) are fixedly mounted with protection pads (44); the outer circumferences of the dampers (42) are movably sleeved with damping springs (43); and the two ends of the damping springs (43) are respectively fixedly connected to the protection pads (44) and the other side of the inner cavity of the groove (41); and a sealing pad (45) is fixedly mounted on the other side of the plug door body (2) on one side.

6. A locking device for a plug door according to claim 5, characterized in that: One side of the protective pad (44) is slightly higher than the depth of the inner cavity of the groove (41).

7. The locking device for a plug door according to claim 5, characterized in that: The sealing gasket (45) is made of rubber material.

Images