Limiting structure for access covers of front and rear roofs of passenger car

Abstract

The utility model relates to a limiting structure for access covers of front and rear roofs of a passenger car, which is arranged between a roof and the access covers and comprises at least two groups of limiting components arranged in parallel, and each group of limiting components comprises a drawstring support, a limiting drawstring, a limiting sleeve and a limiting screw; the drawstring support is arranged on a car roof, the limiting sleeve is arranged on the access cover, the drawstring support corresponds to the limiting sleeve, the limiting drawstring is arranged between the drawstring support and the limiting sleeve, one end of the limiting drawstring is connected to the drawstring support, the other end of the limiting drawstring penetrates through the limiting sleeve and extends outwards, and a plurality of limiting screws are arranged on the limiting sleeve. The head of the limiting screw penetrates into the limiting sleeve and tightly abuts against the limiting pull belt. According to the utility model, the downward-turning access cover of the passenger car can be limited after being opened, the opening angle is adjustable, and maintenance personnel can conveniently carry out maintenance operation.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle maintenance, in particular to a limit structure for the front and rear roof maintenance covers of a bus. Background Art

[0002] Generally, maintenance openings are arranged on the front and rear roofs of buses to facilitate the maintenance of the lines and electrical appliances inside the roof. A downward-folding maintenance cover is arranged at the maintenance opening to cover it to ensure its aesthetics. After unlocking the maintenance cover through a lock, it can be flipped open. At this time, the maintenance opening is in an open state, facilitating the maintenance operation of personnel. There is no limit structure during the flipping and opening process of the maintenance cover, and the opening angle of the maintenance cover is not adjustable. When personnel perform maintenance, they need to hold the maintenance cover by hand for maintenance, and the operation is relatively inconvenient. Summary of the Invention

[0003] In order to solve the problem that the opening angle of the existing maintenance cover is not adjustable, resulting in inconvenient maintenance, the utility model provides a limit structure for the front and rear roof maintenance covers of a bus. An adjustable limit strap is added between the maintenance cover and the roof. Maintenance personnel can adjust the length of the limit strap, thereby adjusting the opening angle of the maintenance cover and improving the convenience of maintenance.

[0004] To achieve the above object, the technical solution adopted by the utility model is:

[0005] A limit structure for the front and rear roof maintenance covers of a bus is arranged between the roof and the maintenance cover, and includes at least two groups of limit components arranged side by side, which is convenient to provide uniform support tension for the maintenance cover. Each group of the limit components includes a strap bracket, a limit strap, a limit sleeve and a limit screw;

[0006] The strap bracket is arranged on the roof, the limit sleeve is arranged on the maintenance cover, the strap bracket and the limit sleeve correspond to each other, and the limit strap is arranged between the strap bracket and the limit sleeve, which is convenient to connect the two components. One end of the limit strap is connected to the strap bracket, the other end of the limit strap passes through the limit sleeve and extends outwards. The length of the extended limit strap determines the opening angle of the maintenance cover. A plurality of the limit screws are arranged on the limit sleeve, and the head of the limit screw penetrates into the limit sleeve and abuts against the limit strap, which is convenient to lock and unlock the limit strap, thereby adjusting the opening angle of the maintenance cover.

[0007] Furthermore, the strap bracket is detachably connected to the roof. The strap bracket includes a support plate and a pin shaft. The support plate is a "U"-shaped plate body bent from a steel plate, and the pin shaft is arranged through the support plate. The pin shaft can be conveniently disassembled and assembled from the support plate; one end of the limit strap is wound into a circular ring shape. After the pin shaft passes through one end of the limit strap, it is connected to the support plate. The convenient disassembly and assembly of the pin shaft also facilitate the disassembly and assembly of the limit strap and the strap bracket.

[0008] Furthermore, the limiting sleeve is a flat ring structure, which can facilitate the insertion of the limiting pull belt. The limiting sleeve and the inspection cover are detachably connected. A winding drum for automatically winding up the limiting pull belt is provided at one end of the limiting sleeve. The limiting sleeve is tangent to the winding drum. The winding drum and the limiting sleeve opening are connected to facilitate the limiting pull belt to enter the winding drum. The other end of the limiting pull belt extends out of the limiting sleeve and is wound in the winding drum.

[0009] Furthermore, the winding drum includes a drum body, a drum cover, a winding shaft and a coil spring. The drum body is a circular ring body. The drum body and the limiting sleeve are tangent and connected. The drum covers are detachably provided at the openings at both ends of the drum body to facilitate the opening and closing of the winding drum and the installation of internal components. The winding shaft is rotatably provided between the two drum covers. The limiting pull belt is wound on the winding shaft. The coil spring is sleeved on the winding shaft to facilitate the winding shaft to rotate and reset, thereby winding the limiting pull belt.

[0010] Furthermore, both ends of the winding shaft are stepped, the end of the winding shaft is inserted into the center of the cylinder cover, and the cylinder cover is against the shoulder of the winding shaft to limit the axial movement of the winding shaft. Two partitions are arranged on the winding shaft to separate the limit pull belt and the coil spring. The partition is annular, the outer diameter of the partition is matched with the inner diameter of the cylinder, and there is a gap between the partition and the end face of the winding shaft;

[0011] A limit pull belt is wound on the reel between the two partitions, and the coil springs are arranged at both ends of the reel, the inner end of the coil spring is fixed on the reel, and the outer end of the coil spring is connected and fixed to the inner wall of the cylinder.

[0012] Through the above technical solution, the beneficial effects of the utility model are:

[0013] The utility model has a reasonable structural design, and two sets of limit assemblies are arranged between the roof and the inspection cover, so as to provide uniform support force for the inspection cover. One end of the limit drawstring is fixedly connected to the roof through a drawstring bracket, and the other end of the limit drawstring is adjustably connected to the inspection cover through a limit sleeve, and the limit drawstring can be inserted and moved in the limit sleeve. By adjusting the length of the limit drawstring extending out of the limit sleeve, the opening angle of the inspection cover can be conveniently controlled, and the limit drawstring can be locked and unlocked by the limit screw, thereby ensuring that the inspection cover is always at a fixed opening angle, which is convenient for personnel's maintenance work.

[0014] The utility model introduces the limiter strap extending from the limiter sleeve into the reel, and the reel adopts the principle of automatic resetting of the coil spring, which can drive the limiter strap to be wound on the reel, so as to realize the convenient storage of the limiter strap and ensure the regularity of the limiter strap. At the same time, the reel always has the force to rewind the limiter strap, so the inspection cover tends to be closed, so as to prevent the inspection cover from being accidentally opened during driving, and ensure driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1The utility model is a schematic diagram of the overall structure of a limiting structure of a front and rear top inspection cover of a passenger car.

[0016] Figure 2 The utility model is a schematic diagram of a drawstring bracket of a limiting structure of a front and rear top inspection cover of a passenger car.

[0017] Figure 3 The utility model is a top view of the winding drum in the second embodiment of the limiting structure of the front and rear top inspection covers of a passenger car.

[0018] Figure 4 The utility model is a side view of a winding drum in a second embodiment of a limiting structure of a front and rear top inspection cover of a passenger car.

[0019] Figure 5 The utility model is a cross-sectional view of a winding drum in a second embodiment of a position limiting structure of a front and rear top inspection cover of a passenger car.

[0020] Figure 6 The utility model is a limiting structure of the front and rear top inspection cover of a passenger car. Figure 5 AA section view.

[0021] Figure 7 The utility model is a schematic diagram of the installation of a reel in the second embodiment of the limiting structure of the front and rear top inspection covers of a passenger car.

[0022] The numbers in the attached drawings are: 1 roof, 2 inspection cover, 3 inspection port, 4 drawstring bracket, 41 support plate, 42 pin shaft, 5 limit drawstring, 6 limit sleeve, 7 limit screw, 8 take-up drum, 81 drum body, 82 drum cover, 83 take-up shaft, 84 coil spring, 9 mounting screw, 10 partition plate, 11 long hole. DETAILED DESCRIPTION

[0023] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings:

[0024] Embodiment 1:

[0025] like Figure 1~Figure 2 As shown, a limiting structure of the front and rear top inspection covers of a passenger car is arranged between the roof 1 and the inspection cover 2. There is an inspection opening 3 on the roof 1. The inspection cover 2 is used to open and close the inspection opening 3. The inspection cover 2 and the roof 1 are hinged to enable the inspection cover 2 to be flipped down and opened.

[0026] The limiting structure of the front and rear top inspection covers of the bus includes at least two sets of limiting components arranged in parallel. The two sets of limiting components cooperate to adjust the opening angle of the inspection cover 2 and can keep the inspection cover 2 fixed at a certain angle to facilitate maintenance operations of personnel.

[0027] In this embodiment, each set of limiting components includes a drawstring bracket 4, a limiting drawstring 5, a limiting sleeve 6 and a limiting screw 7. Figure 1 As shown. The pull - belt bracket 4 is arranged on the vehicle roof 1. Specifically, the pull - belt bracket 4 and the vehicle roof 1 are detachably connected to facilitate the disassembly and assembly of the pull - belt bracket 4.

[0028] The pull - belt bracket 4 includes a support plate 41 and a pin shaft 42. As Figure 2 shown, the support plate 41 is a "U" - shaped plate body bent from a steel plate. The open end of the support plate 41 is narrower and the closed end is wider. The closed end of the support plate 41 is bolt - connected and fixed to the vehicle roof 1. There is a large contact area between the support plate 41 and the vehicle roof 1, so the stable and reliable installation of the pull - belt bracket 4 can be ensured. A pin shaft 42 is penetrated through the support plate 41. The pin shaft 42 is located at the open end of the support plate 41, and the pin shaft 42 can be conveniently taken and placed from the support plate 41.

[0029] The limit sleeve 6 is arranged on the inspection cover 2. The limit sleeve 6 is of a flat - ring structure and corresponds to the pull - belt bracket 4. A limit pull - belt 5 is arranged between the pull - belt bracket 4 and the limit sleeve 6, and the pull - belt bracket 4 and the limit sleeve 6 can be connected through the limit pull - belt 5.

[0030] When the limit pull - belt 5 is installed, one end of the limit pull - belt 5 is connected to the pull - belt bracket 4. Specifically, one end of the limit pull - belt 5 is wound into a circular ring shape. After the pin shaft 42 passes through one end of the limit pull - belt 5, it is connected to the support plate 41, so that the convenient disassembly and assembly of the limit pull - belt 5 and the pull - belt bracket 4 can be realized. The other end of the limit pull - belt 5 passes through the limit sleeve 6 and extends outwards, that is, the other end of the limit pull - belt 5 can slide back and forth in the limit sleeve 6.

[0031] In order to realize the locking of the sliding, a plurality of limit screws 7 are arranged on the limit sleeve 6. The heads of the limit screws 7 penetrate into the limit sleeve 6 and abut against the limit pull - belt 5. After the limit screws 7 are tightened, the limit pull - belt 5 can be locked. At this time, the limit pull - belt 5 cannot slide in the limit sleeve 6, and the rotation angle of the inspection cover 2 is fixed. After the limit screws 7 are loosened, the limit pull - belt 5 can continue to slide, and the inspection cover 2 can be further flipped.

[0032] The principle of the present utility model is as follows: After installing two groups of limit components between the vehicle roof 1 and the inspection cover 2, in the initial state, the limit screws 7 are loosened to ensure that the limit pull - belt 5 is in a slidable state in the limit sleeve 6. The inspection cover 2 can be freely closed and locked by a lock to ensure the closed state of the inspection cover 2. When the inspection cover 2 needs to be opened, first unlock it through the lock, and then manually turn down the inspection cover 2. After turning it to the required angle, tighten the limit screws 7 to fix the limit pull - belt 5. At this time, the inspection cover 2 is fixed by relying on the limit pull - belt 5, and the fixed opening angle of the inspection cover 2 is maintained, and personnel can carry out maintenance operations.

[0033] It should be noted that the length of the limiter strap 5 extending out of the limiter sleeve 6 indicates the downward turning angle of the inspection cover 2: the shorter the limiter strap 5 extends out of the limiter sleeve 6, the greater the downward turning angle of the inspection cover 2; conversely, the longer the limiter strap 5 extends out of the limiter sleeve 6, the smaller the downward turning angle of the inspection cover 2. By adjusting the length of the limiter strap 5 extending out of the limiter sleeve 6, the opening angle of the inspection cover 2 can be conveniently adjusted.

[0034] Embodiment 2:

[0035] This embodiment is basically the same as the first embodiment, and the similarities are not repeated here. The difference is that: Figure 3~Figure 7 As shown, a winding drum 8 for automatically winding the limiting pull belt 5 is provided at one end of the limiting sleeve 6, and the winding drum 8 and the limiting sleeve 6 are connected as a whole. Figure 3 and Figure 4 The limiting sleeve 6 is tangent to the winding drum 8, and the winding drum 8 and the limiting sleeve 6 are connected by openings. After the other end of the limiting drawstring 5 extends out of the limiting sleeve 6 and is wound in the winding drum 8, the limiting drawstring 5 extending out of the limiting sleeve 6 can be regularized so that it is wound in the winding drum 8.

[0036] The limiting sleeve 6 and the inspection cover 2 are detachably connected. Specifically, the width of the limiting sleeve 6 can be appropriately increased to ensure that the width of the limiting sleeve 6 is greater than the width of the limiting drawstring 5. In this way, mounting screws 9 are arranged on both sides of the limiting sleeve 6. The mounting screws 9 penetrate the limiting sleeve 6 and are connected to the inspection cover 2, so that the limiting sleeve 6 can be fixed and the winding drum 8 can also be kept fixed. Once the mounting screws 9 are loosened, the limiting sleeve 6 and the winding drum 8 can be separated from the inspection cover 2 together.

[0037] In this embodiment, the winding drum 8 includes a drum body 81, a drum cover 82, a winding shaft 83 and a coil spring 84. Figure 5 , Figure 6 and Figure 7 As shown. The cylinder 81 is a circular ring body, and the cylinder 81 and the limiting sleeve 6 are tangent and connected. The openings at both ends of the cylinder 81 are detachably provided with cylinder covers 82, and the cylinder cover 82 can close the cylinder 81 to form a closed cylindrical space. The cylinder cover 82 is a stepped circular cover body, and the cylinder cover 82 and the cylinder 81 are threadedly connected. The stepped cylinder cover 82 has a certain limiting effect to ensure that the cylinder cover 82 remains fixed after being twisted to a certain extent, and the cylinder cover 82 has a hole in the center.

[0038] A reel 83 is rotatably arranged between the two cylinder covers 82. When the reel 83 is installed, both ends of the reel 83 are stepped, and the end of the reel 83 is inserted through the center of the cylinder cover 82, and the cylinder cover 82 abuts against the shoulder of the reel 83. The reel 83 can rotate normally, and the cylinder cover 82 can also limit the reel 83 to prevent its axial movement.

[0039] The limiter strap 5 is wound on the reel 83, and a coil spring 84 is sleeved on the reel 83. In order to separate the limiter strap 5 and the coil spring 84, two partitions 10 are arranged on the reel 83 at intervals. The partition 10 is annular, and the outer diameter of the partition 10 matches the inner diameter of the cylinder 81. There is a gap between the partition 10 and the end face of the reel 83. The limiter strap 5 is wound on the reel 83 between the two partitions 10, and a long hole 11 is radially opened on the reel 83. The end of the limiter strap 5 can be inserted into the long hole 11, and the long hole 11 squeezes the end of the limiter strap 5 to fix the end of the limiter strap 5.

[0040] Coil springs 84 are arranged at both ends of the winding shaft 83. The coil springs 84 are spiral springs. The partition 10 can separate the coil springs 84 from the limiting drawstring 5. When the coil springs 84 are installed, the inner ends of the coil springs 84 are fixed on the winding shaft 83, and the outer ends of the coil springs 84 are connected and fixed to the inner wall of the cylinder 81. Once the winding shaft 83 rotates, the coil springs 84 will take effect. Under the action of the coil springs 84, the limiting drawstring 5 tends to be wound into the winding drum 8.

[0041] In the utility model, after loosening the limit screw 7 and closing the inspection cover 2, the limit drawstring 5 can be continuously rolled up by the winding drum 8 to prevent the limit drawstring 5 from being scattered outside, thereby achieving the regularity of the limit drawstring 5. After the inspection cover 2 is closed, it can be locked by a lock, and the winding drum 8 always has the force to roll up the limit drawstring 5, thereby preventing the inspection cover 2 from being accidentally opened during driving due to the inspection cover 2 not being locked.

[0042] When the inspection cover 2 is opened, even after the inspection cover 2 is unlocked by the lock, the limiter strap 5 still tends to enter the reel 8, so the inspection cover 2 will not immediately turn down due to gravity. Only when an external force is manually applied to the inspection cover 2, the limiter strap 5 will be released from the reel 8, and the inspection cover 2 can be turned down. After turning to the required angle, tighten the limit screw 7 to ensure that the inspection cover 2 is fixed.

[0043] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A limiting structure for front and rear roof inspection covers of a passenger car, arranged between the roof (1) and the inspection cover (2), characterized in that: It includes at least two sets of limiting components arranged side by side. Each set of the limiting components includes a strap bracket (4), a limiting strap (5), a limiting sleeve (6), and a limiting screw (7). The strap bracket (4) is arranged on the vehicle roof (1), and the limiting sleeve (6) is arranged on the inspection cover (2). The strap bracket (4) and the limiting sleeve (6) correspond to each other. The limiting strap (5) is arranged between the strap bracket (4) and the limiting sleeve (6). One end of the limiting strap (5) is connected to the strap bracket (4), and the other end of the limiting strap (5) passes through the limiting sleeve (6) and extends outwards. A plurality of the limiting screws (7) are arranged on the limiting sleeve (6), and the heads of the limiting screws (7) penetrate into the limiting sleeve (6) and abut against the limiting strap (5).

2. The limiting structure of the front and rear top inspection cover of a passenger car according to claim 1 is characterized in that: The strap bracket (4) and the vehicle roof (1) are detachably connected. The strap bracket (4) includes a support plate (41) and a pin shaft (42). The support plate (41) is a "U"-shaped plate body bent from a steel plate, and the pin shaft (42) is penetrated through the support plate (41). One end of the limiting strap (5) is wound into a circular ring shape, and after the pin shaft (42) passes through one end of the limiting strap (5), it is connected to the support plate (41).

3. The limiting structure of the front and rear top inspection cover of a passenger car according to claim 1 is characterized in that: The limiting sleeve (6) is of a flat annular structure, and the limiting sleeve (6) and the inspection cover (2) are detachably connected. A winding drum (8) for automatically winding the limiting strap (5) is arranged at one end of the limiting sleeve (6). The limiting sleeve (6) is tangent to the winding drum (8), and the winding drum (8) and the opening of the limiting sleeve (6) are communicated. The other end of the limiting strap (5) extends out of the limiting sleeve (6) and is wound in the winding drum (8).

4. The limiting structure of the front and rear top inspection cover of a passenger car according to claim 3 is characterized in that: The winding drum (8) includes a cylinder body (81), a cylinder cover (82), a winding shaft (83), and a coil spring (84). The cylinder body (81) is an annular body, the cylinder body (81) is tangent to and communicated with the limiting sleeve (6), the cylinder cover (82) is detachably arranged at the openings at both ends of the cylinder body (81), the winding shaft (83) is rotatably arranged between the two cylinder covers (82), the limiting strap (5) is wound on the winding shaft (83), and the coil spring (84) is sleeved on the winding shaft (83).

5. The limiting structure of the front and rear top inspection cover of a passenger car according to claim 4, characterized in that: Both ends of the winding shaft (83) are stepped. The end of the winding shaft (83) penetrates through the center of the cylinder cover (82), and the cylinder cover (82) abuts against the shoulder of the winding shaft (83). Two partition plates (10) are arranged at intervals on the winding shaft (83). The partition plates (10) are circular rings, the outer diameter of the partition plates (10) is adapted to the inner diameter of the cylinder body (81), and there is a gap between the partition plates (10) and the end face of the winding shaft (83). The limiting strap (5) is wound on the winding shaft (83) between the two partition plates (10). The coil springs (84) are arranged at both ends of the winding shaft (83). The inner ends of the coil springs (84) are fixed on the winding shaft (83), and the outer ends of the coil springs (84) are fixedly connected to the inner wall of the cylinder body (81).

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