Manual four-step structure for passenger car

Abstract

The utility model relates to the technical field of passenger car steps, and discloses a manual four-step structure for a passenger car, which comprises a frame component, a framework component is movably sleeved in the frame component, and an upper connecting rod component and a pedal component are mounted at the front end of the framework component. And meanwhile, the lower connecting rod assembly sleeves the inner sides of the upper connecting rod assembly and the pedal assembly. According to the manual four-step structure for the passenger car, when the pedal stretches out, the positioning groove falls within the limit of the positioning block, the stretching-out angle of the pedal is fixed, the stretching-out position of the pedal is locked, the base anchor makes contact with the ground, the strength of the pedal is guaranteed, and the safety of people getting on and off the passenger car is guaranteed; the overall thickness is small, space is saved, the upper connecting rod and the lower connecting rod are locked through nylon blocks, and it is guaranteed that no abnormal sound is generated during recycling.

Description

Technical Field

[0001] The utility model relates to the technical field of bus steps, in particular to a manual four-stage step structure for buses. Background Art

[0002] The existing RV floor is at a high distance from the ground. In order to facilitate passengers to enter the vehicle, steps are set under the RV door. Manual four-level steps are commonly installed at the bottom of the middle door of a bus. When there is an emergency need, the pedals are manually extended for passengers to get on and off the vehicle, so as to improve the convenience of passengers when using it.

[0003] Usually, when the four-level step structure is used, the staff needs to manually remove the step from the inside of the bus. At this time, during the process of pulling out the step, the structures are compact with each other, which causes abnormal noise when the step is pulled out. The abnormal noise affects the use effect of the equipment. At the same time, since the equipment is set on the bus, the overall use space of the step is small, and the overall width of the pulled-out step is small. When stepping on the step, it is easy to slide out, causing a safety hazard. For this reason, we proposed a manual four-level step structure for buses. Utility Model Content

[0004] In response to the shortcomings of the existing manual four-stage step structure for buses, the utility model provides a manual four-stage step structure for buses, which has the advantages that when the pedal assembly is pulled out from the inside of the frame assembly, the upper connecting rod assembly and the lower connecting rod assembly are staggered with each other, that is, the overall width of the pedal assembly is increased, the floor space occupied when stepping on the upper part of the pedal assembly is increased, and the safety when stepping on it is improved, thereby solving the problems raised in the above-mentioned background technology.

[0005] The utility model provides the following technical solution: a manual four-stage step structure for a passenger car, comprising a frame assembly, a skeleton assembly movably sleeved inside the frame assembly, an upper connecting rod assembly and a pedal assembly installed at the front end of the skeleton assembly, and a lower connecting rod assembly sleeved inside the upper connecting rod assembly and the pedal assembly.

[0006] Preferably, the frame assembly includes a left side support, a right side support, a rear support and a support plate, and the left side support, the right side support, the rear support and the support plate are riveted together with rivets, and the middle parts of the left side support and the right side support are raised, and locking holes are opened inside the front ends of the left side support and the right side support, and front limit blocks are installed inside the front ends of the left side support and the right side support and on the side of the locking holes, and a blocking block is installed inside the rear support.

[0007] Preferably, the skeleton assembly includes a skeleton, auxiliary sliders are installed on both sides of the skeleton through countersunk rivets, a positioning block is installed at the lower part of the front end of the skeleton, V-shaped rollers are installed inside both sides of the skeleton, a roller pin is sleeved inside the V-shaped roller, a bearing is installed between the V-shaped roller and the roller pin, a retaining ring is installed on the side of the bearing, a first washer is installed at one end of the roller pin, the roller pin is arranged inside the skeleton, and a bolt is arranged inside the first washer.

[0008] Preferably, two groups of holes are opened on both sides of the front end of the skeleton, and a first sleeve is installed inside each group of holes. At the same time, a first half-thread bolt is installed inside the first sleeve through a fourth washer, and the two groups of first half-thread bolts are connected to the upper connecting rod assembly and the lower connecting rod assembly.

[0009] Preferably, an auxiliary positioning block is welded to the lower part of the front end of the frame, and when the pedal assembly is extended, the auxiliary positioning block is arranged at the rear end of the front limit block.

[0010] Preferably, the upper connecting rod assembly includes a left plate, a right plate and a top plate, the side surfaces of the left plate and the right plate are provided with holes, the inside of the holes are sleeved with a second shaft sleeve, the inside of the second shaft sleeve is provided with a second half-thread bolt installed through a second washer, the front ends of the left plate and the right plate are fixedly connected to the anchor plate, and a positioning hole is provided on one side of the anchor plate, the positioning hole is aligned with the locking hole, the upper parts of the left plate and the right plate are provided with nylon blocks through rivets, and the lower connecting rod assembly can be clamped inside the nylon block.

[0011] Preferably, the pedal assembly includes a second left support and a second right support, a pedal surface is installed between the second left support and the second right support by screws, and a first mounting hole and a second mounting hole are provided on the second left support and the second right support.

[0012] Preferably, the lower connecting rod assembly includes a support tube, a third washer is installed inside the support tube, a third half-thread bolt is installed inside the third washer through a third sleeve, and the third half-thread bolt passes through the support tube and is installed inside the first mounting hole.

[0013] Preferably, a positioning groove is provided inside the top plate, and the positioning block and the positioning groove limit each other.

[0014] Compared with the existing manual four-step step structure for passenger cars, the utility model has the following beneficial effects:

[0015] 1. This bus uses a manual four-step step structure. The frame assembly uses V-shaped rollers with bearings installed inside to ensure the smooth operation of the entire step. Auxiliary sliders are installed on both sides of the frame assembly to make up for the running gap of the frame assembly in the width direction. When the step is extended as a whole, the frame assembly and the frame assembly limit each other to prevent the step from detaching from the frame.

[0016] 2. The bus uses a manual four-step step structure. When the pedal is extended, the positioning groove falls within the limit of the positioning block, fixing the pedal extension angle and locking the pedal extension position. The anchor plate is in contact with the ground to ensure the strength of the pedal and the safety of people getting on and off the bus. The upper connecting rod and the lower connecting rod form a parallelogram structure to ensure that the overall thickness is small when the pedal is retracted, saving space. The upper and lower connecting rods are locked by nylon blocks to ensure that no abnormal noise occurs when it is retracted.

[0017] 3. The bus adopts a manual four-stage step structure. The connecting rod and the pedal assembly are connected by half-thread bolts. The length of the half-thread bolts can effectively control the gap between the connecting rod and the pedal assembly. At the same time, the relative movement between the pedal surface assembly and the connecting rod can be tightened to ensure smooth operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the utility model in the open state;

[0019] Figure 2 This is a schematic diagram of the structure of the main body of the utility model in the recovery state;

[0020] Figure 3 This is a partially enlarged structural diagram of the frame assembly of the utility model;

[0021] Figure 4 This is a partial cross-sectional structural diagram of the frame assembly of the present invention;

[0022] Figure 5 This is a schematic diagram of the skeleton assembly structure of the utility model;

[0023] Figure 6 This is a partial cross-sectional structural diagram of the V-shaped roller of the utility model;

[0024] Figure 7 This is an enlarged structural diagram of point A of the utility model;

[0025] Figure 8 This is a schematic structural diagram of the upper connecting rod assembly of the utility model;

[0026] Figure 9 This is a schematic diagram of the structure of the pedal assembly of the utility model;

[0027] Figure 10 This is a schematic structural diagram of the lower connecting rod assembly of the present utility model.

[0028] In the figure: 1. Frame assembly; 101. Left side support; 102. Right side support; 103. Rear support; 104. Front stopper; 105. Support plate; 106. Block; 107. Locking hole; 2. Frame assembly; 201. Frame; 202. Roller pin; 203. Fourth washer; 204. Auxiliary slider; 205. V-shaped roller; 206. First sleeve; 207. Bearing; 208. Retaining ring; 209. Countersunk rivet; 210. First washer; 211. Bolt; 212. First half-thread bolt; 213. Positioning block; 214. Auxiliary positioning block; 3. Upper Connecting rod assembly; 301, positioning groove; 303, second half-thread bolt; 304, second bushing; 305, second washer; 306, nylon block; 307, rivet; 308, positioning hole; 309, anchor plate; 310, top plate; 311, left plate; 312, right plate; 4, pedal assembly; 401, second left support; 402, second right support; 403, pedal surface; 404, first mounting hole; 405, second mounting hole; 5, lower connecting rod assembly; 501, support tube; 502, third half-thread bolt; 503, third bushing; 504, third washer. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10 A manual four-stage step structure for a bus includes a frame assembly 1. The frame assembly 1 is movably sleeved with a skeleton assembly 2. By driving the skeleton assembly 2 to move inside the frame assembly 1, the upper connecting rod assembly 3 and the lower connecting rod assembly 5 can be recovered to the interior of the frame assembly 1. The front end of the skeleton assembly 2 is installed with an upper connecting rod assembly 3 and a pedal assembly 4. The upper connecting rod assembly 3 and the pedal assembly 4 limit the position of the lower connecting rod assembly 5. At the same time, the inner side of the upper connecting rod assembly 3 and the pedal assembly 4 is sleeved with the lower connecting rod assembly 5. When the upper connecting rod assembly 3 is extended and opened, the lower connecting rod assembly 5 can facilitate the user to step on and walk.

[0031] See also Figure 3The frame assembly 1 includes a left side support 101, a right side support 102, a rear support 103 and a support plate 105. The left side support 101, the right side support 102, the rear support 103 and the support plate 105 are riveted together with rivets. At the same time, the middle parts of the left side support 101 and the right side support 102 are in a convex state. The interior of the front end of the left side support 101 and the right side support 102 is provided with a locking hole 107. The interior of the front end of the left side support 101 and the right side support 102 and the side of the locking hole 107 are provided with a front limit block 104. The interior of the rear support 103 is provided with a blocking block 106. The convex state formed between the left side support 101 and the right side support 102 provides a moving space for the rolling of the V-shaped roller 205. At the same time, when the equipment is recovered, the blocking block 106 is locked to the rear end of the frame assembly 1 to improve the stability of the overall equipment during positioning after recovery.

[0032] See also Figure 5 The skeleton assembly 2 includes a skeleton 201, auxiliary sliders 204 are installed on both sides of the skeleton 201 through countersunk rivets 209, a positioning block 213 is installed at the lower part of the front end of the skeleton 201, V-shaped rollers 205 are installed inside both sides of the skeleton 201, and the roller pin 202 is sleeved inside the V-shaped roller 205. A bearing 207 is installed between the V-shaped roller 205 and the roller pin 202, and a retaining ring 208 is installed on the side of the bearing 207. A first washer 210 is installed at one end of the roller pin 202, and the roller pin 202 is arranged inside the skeleton 201, and a bolt 211 is arranged inside the first washer 210.

[0033] See also Figure 6 Two groups of holes are provided on both sides of the front end of the skeleton 201, and a first sleeve 206 is installed inside each group of holes. At the same time, a first half-thread bolt 212 is installed inside the first sleeve 206 through a fourth washer 203. The two groups of first half-thread bolts 212 are connected to the upper connecting rod assembly 3 and the lower connecting rod assembly 5. By installing the V-shaped roller 205 inside the skeleton 201 and controlling the skeleton 201 to be set inside the frame assembly 1, the V-shaped roller 205 can be driven to be installed on the inner side of the left support 101 and the right support 102. At the same time, since a bearing 207 is installed between the roller pin 202 and the V-shaped roller 205, the bearing 207 can reduce the friction when the V-shaped roller 205 rotates.

[0034] See also Figure 5 An auxiliary positioning block 214 is welded to the lower part of the front end of the skeleton 201. When the pedal assembly 4 is extended, the auxiliary positioning block 214 is set at the rear end of the front limit block 104. An auxiliary positioning block 214 is welded to the lower part of the front end of the skeleton 201. When the pedal is extended, the auxiliary positioning block 214 moves to the bottom of the front end of the frame assembly 1, which drives the skeleton assembly 2 to be fixed at one end inside the frame assembly 1 to prevent the main body of the skeleton assembly 2 from slipping out from the inside of the frame assembly 1.

[0035] See also Figure 8 The upper connecting rod assembly 3 includes a left plate 311, a right plate 312 and a top plate 310. The side surfaces of the left plate 311 and the right plate 312 are provided with holes, and the second shaft sleeve 304 is sleeved inside the hole. The second half-thread bolt 303 is installed inside the second shaft sleeve 304 through a second washer 305. The front ends of the left plate 311 and the right plate 312 are fixedly connected with the anchor plate 309. At the same time, a positioning hole 308 is provided on one side of the anchor plate 309. The positioning hole 308 is aligned with the locking hole 107. The upper parts of the left plate 311 and the right plate 312 are provided with nylon blocks 306 through rivets 307. The lower connecting rod assembly 5 can be clamped inside the nylon block 306 and connected through the upper connecting rod assembly 3 is arranged on one side of the skeleton assembly 2, and the second half-thread bolt 303 and the second mounting hole 405 are used to cooperate with each other for installation, that is, the position between the upper connecting rod assembly 3 and the lower connecting rod assembly 5 can be limited. At the same time, nylon blocks 306 are installed on the upper parts of the left plate 311 and the right plate 312 through rivets 307. The nylon blocks 306 provide auxiliary support for the position of the lower connecting rod assembly 5. At the same time, when the equipment is extended, the equipment can be driven to support on the ground through the anchor plate 309, and the positioning hole 308 is controlled to be aligned with the locking hole 107. When the equipment is retracted, pins are installed inside the positioning hole 308 and the locking hole 107 to lock the equipment inside the frame assembly 1.

[0036] See also Figure 9 The pedal assembly 4 includes a second left support 401 and a second right support 402, and a pedal surface 403 is installed between the second left support 401 and the second right support 402 by screws. A first mounting hole 404 and a second mounting hole 405 are opened on the second left support 401 and the second right support 402. A first mounting hole 404 and a second mounting hole 405 are opened on the side of the second left support 401, and the upper connecting rod assembly 3 and the lower connecting rod assembly 5 can be matched and connected through the first mounting hole 404 and the second mounting hole 405 in turn. At the same time, when the upper connecting rod assembly 3 and the lower connecting rod assembly 5 are pushed out from the inside of the frame assembly 1, since the top ends of the upper connecting rod assembly 3 and the lower connecting rod assembly 5 are limited by the screws, that is, when the upper connecting rod assembly 3 is flipped downward, the upper connecting rod assembly 3 and the lower connecting rod assembly 5 form an opening, that is, the control pedal surface 403 is continuously kept parallel to the horizontal plane, which is convenient for the user to step on.

[0037] See also Figure 10 The lower connecting rod assembly 5 includes a support tube 501, a third washer 504 is installed inside the support tube 501, and a third half-thread bolt 502 is installed inside the third washer 504 through a third shaft sleeve 503. At the same time, the third half-thread bolt 502 passes through the support tube 501 and is installed inside the first mounting hole 404. It is set at the upper end of the pedal assembly 4 through the lower connecting rod assembly 5 and is fixed by the third half-thread bolt 502.

[0038] See also Figure 1 A positioning groove 301 is opened inside the top plate 310, and the positioning block 213 and the positioning groove 301 limit each other. The positioning groove 301 is opened inside the top plate 310. When the device positioning groove 301 and the positioning block 213 contact each other, the positioning block 213 fixes the maximum deflection angle of the positioning groove 301.

[0039] Working principle: recycling status;

[0040] The skeleton assembly 2 is clamped inside the frame assembly 1, and the V-shaped roller 205 provided inside the skeleton assembly 2 is used to roll inside the frame assembly 1, so as to drive the skeleton assembly 2 to be recycled into the interior of the frame assembly 1. At the same time, during the recycling process of the skeleton assembly 2, the skeleton assembly 2 drives the upper connecting rod assembly 3 and the lower connecting rod assembly 5 to move synchronously into the interior of the frame assembly 1. At the same time, the ends of the upper connecting rod assembly 3 and the lower connecting rod assembly 5 are installed on both sides of the skeleton assembly 2, that is, the upper connecting rod assembly 3 and the lower connecting rod assembly 5 can be kept in a parallel state, and the lower connecting rod assembly 5 is sleeved inside the nylon block 306 provided inside the upper connecting rod assembly 3, that is, the entire equipment can be recycled;

[0041] Open state:

[0042] Push the skeleton assembly 2 to move to the other side, and at the same time, the upper connecting rod assembly 3 and the lower connecting rod assembly 5 move out of the interior of the frame assembly 1. Since the top ends of the upper connecting rod assembly 3 and the lower connecting rod assembly 5 are staggered with each other and arranged with the skeleton assembly 2, that is, after the upper connecting rod assembly 3 and the lower connecting rod assembly 5 are moved out and flipped downward, the distance between the upper connecting rod assembly 3 and the lower connecting rod assembly 5 is adjusted. At the same time, the pedal assembly 4 is arranged between the upper connecting rod assembly 3 and the lower connecting rod assembly 5, and the pedal assembly 4 can be kept parallel to the horizontal plane. The user can step on the upper part of the pedal assembly 4 to walk.

[0043] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A manual four-stage step structure for a passenger car, comprising a frame assembly (1), characterized in that: The frame assembly (1) is movably sleeved with a skeleton assembly (2), and the front end of the skeleton assembly (2) is installed with an upper connecting rod assembly (3) and a pedal assembly (4), and the inner sides of the upper connecting rod assembly (3) and the pedal assembly (4) are sleeved with a lower connecting rod assembly (5), and the upper connecting rod assembly (3) includes a left plate (311), a right plate (312) and a top plate (310), and the side surfaces of the left plate (311) and the right plate (312) are provided with holes, and the inside of the holes is sleeved with a second shaft sleeve (304), and the inside of the second shaft sleeve (304) is installed with a second half-thread bolt (303) through a second washer (305), and the front ends of the left plate (311) and the right plate (312) are fixedly connected with a base plate (310). 09), and a positioning hole (308) is provided on one side of the anchor plate (309), and the positioning hole (308) is aligned with the locking hole (107), and the upper parts of the left plate (311) and the right plate (312) are installed with nylon blocks (306) through rivets (307), and the lower connecting rod assembly (5) can be clamped inside the nylon block (306), and the lower connecting rod assembly (5) includes a support tube (501), and a third washer (504) is installed inside the support tube (501), and a third half-thread bolt (502) is installed inside the third washer (504) through a third shaft sleeve (503), and the third half-thread bolt (502) passes through the support tube (501) and is installed inside the first mounting hole (404).

2. A manual four-stage step structure for a passenger car according to claim 1, characterized in that: The frame assembly (1) includes a left side support (101), a right side support (102), a rear support (103) and a support plate (105). The left side support (101), the right side support (102), the rear support (103) and the support plate (105) are riveted together, and the middle parts of the left side support (101) and the right side support (102) are in a convex state. A locking hole (107) is provided inside the front end of the left side support (101) and the right side support (102). A front limit block (104) is installed inside the front end of the left side support (101) and the right side support (102) and on the side of the locking hole (107). A blocking block (106) is installed inside the rear support (103).

3. The manual four-stage step structure for a passenger car according to claim 1, characterized in that: The skeleton assembly (2) comprises a skeleton (201), auxiliary sliders (204) are installed on both sides of the skeleton (201) via countersunk rivets (209), a positioning block (213) is installed at the lower part of the front end of the skeleton (201), V-shaped rollers (205) are installed inside both sides of the skeleton (201), a roller pin (202) is sleeved inside the V-shaped roller (205), a bearing (207) is installed between the V-shaped roller (205) and the roller pin (202), a retaining ring (208) is installed on the side of the bearing (207), a first washer (210) is installed at one end of the roller pin (202), the roller pin (202) is arranged inside the skeleton (201), and a bolt (211) is arranged inside the first washer (210).

4. The manual four-stage step structure for a passenger car according to claim 3, characterized in that: Two groups of holes are provided on both sides of the front end of the skeleton (201), and a first sleeve (206) is installed inside each group of holes. A first half-thread bolt (212) is installed inside the first sleeve (206) through a fourth washer (203). The two groups of first half-thread bolts (212) are connected to the upper connecting rod assembly (3) and the lower connecting rod assembly (5).

5. The manual four-stage step structure for a passenger car according to claim 4, characterized in that: An auxiliary positioning block (214) is welded to the lower portion of the front end of the frame (201); when the pedal assembly (4) is extended, the auxiliary positioning block (214) is arranged at the rear end of the front limit block (104).

6. The manual four-stage step structure for a passenger car according to claim 1, characterized in that: The pedal assembly (4) includes a second left support (401) and a second right support (402), a pedal surface (403) is mounted between the second left support (401) and the second right support (402) by screws, and a first mounting hole (404) and a second mounting hole (405) are provided on the second left support (401) and the second right support (402).

7. The manual four-stage step structure for a passenger car according to claim 1, characterized in that: A positioning groove (301) is provided inside the top plate (310), and the positioning block (213) and the positioning groove (301) are mutually limited.

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