Four-bar linkage ladder stand device for passenger car

Abstract

The utility model belongs to the technical field of passenger cars, and provides a passenger car four-connecting-rod ladder stand device which comprises a sliding groove, a roller support, a first sliding rail, a second sliding rail and a turnover pedal, the roller support is arranged in the sliding groove in a sliding mode, the first sliding rail is movably connected with the roller support, and the second sliding rail is movably connected with the roller support. The two ends of the overturning pedal are movably connected with the first sliding rail and the second sliding rail respectively. And the roller bracket, the slide rail I, the slide rail II and the turnover pedal form a four-bar mechanism. The sliding groove is assembled on the chassis of the passenger car, the first sliding rail, the second sliding rail and the turnover pedal are stored in the sliding groove during storage, the occupied space is small, and storage is convenient; after being unfolded, the turnover pedals are used for passengers to tread, the stepping area is large, the two ends of each turnover pedal are fixed, and the pedals are not prone to being turned over.

Description

Technical Field

[0001] The utility model relates to the technical field of passenger cars, in particular to a four-link ladder climbing device for passenger cars. Background Art

[0002] At present, the chassis of buses is at a certain height from the ground, which makes it inconvenient for passengers to get on and off, especially for the elderly, children and people with limited mobility. However, in order to facilitate storage, the existing door ladder will be reduced in size as much as possible, resulting in a small step size, which is easy for passengers to step on and overturn. Utility Model Content

[0003] In view of the defects in the prior art, the utility model provides a four-link ladder device for buses, so as to solve the problem that the existing door ladders of buses cannot simultaneously meet the requirements of being easy to store and convenient for passengers to step on.

[0004] The utility model provides a passenger car four-link ladder climbing device, comprising:

[0005] chute;

[0006] A roller bracket is slidably disposed in the slide groove;

[0007] Slide rail 1, movably connected to the roller bracket;

[0008] Slide rail 2, movably connected to the roller bracket;

[0009] A flip pedal, two ends of which are movably connected to the first slide rail and the second slide rail respectively;

[0010] The roller bracket, the first slide rail, the second slide rail and the flip pedal form a four-bar linkage.

[0011] It can be seen from the above technical scheme that the four-link ladder device for buses provided by the utility model installs the slide groove on the chassis of the bus. When stored, the slide rail one, the slide rail two and the flip pedal are stored in the slide groove, which occupies a small space and is easy to store. After unfolding, the flip pedal is for passengers to step on, with a large stepping area, and both ends of the flip pedal are fixed, so it is not easy to step on the step.

[0012] Optionally, the slide groove includes a front slide groove, an inner slide groove and a rear slide groove which are connected in sequence, the front slide groove and the rear slide groove are arranged in parallel and symmetrically, and the inner slide groove is respectively connected to the front slide groove and the rear slide groove.

[0013] Optionally, a limited position mounting beam is connected between the roller brackets, and a limited position beam is arranged on the limited position mounting beam; a connecting beam is arranged on the slide groove, and the limited position beam and the connecting beam are arranged in coordination.

[0014] Optionally, a limit pin is further provided on the outer side of the roller bracket, and a limit hole is provided on the slide groove along the movement direction of the slide rail 1 and the slide rail 2, and the limit pin and the limit hole are matched with each other.

[0015] Optionally, a positioning pin is provided on the slide rail 1 and / or the slide rail 2, and the positioning pin and the limiting hole are arranged in coordination.

[0016] Optionally, first through holes are provided on both sides of the roller bracket, the first through holes are used to install the roller, and a second through hole is provided at the bottom of the roller bracket, and the bottom of the roller contacts the slide groove through the second through hole.

[0017] Optionally, a handle is also provided on the slide rail.

[0018] Optionally, a step anti-skid plate is provided on the flip pedal.

[0019] By adopting the above technical solution, this application has the following technical effects:

[0020] The ladder climbing device of the utility model uses a slide groove and a four-bar linkage, and when folded, the roller bracket can be directly folded into the slide groove, occupying a small space; after unfolding, the four-bar linkage can be used to set a flip pedal with a larger area for passengers to step on, and both ends of the flip pedal are fixed to ensure the stability of the flip pedal installation, and the pedal is not easy to be stepped on. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0022] Figure 1 A schematic diagram of a stowed state of a four-link ladder device for a passenger car provided by an embodiment of the utility model;

[0023] Figure 2 A schematic diagram of a four-link ladder device for a passenger car in an unfolded state provided by an embodiment of the utility model;

[0024] Figure 3 Another schematic diagram of the unfolded state of a four-link ladder device for a passenger car provided by an embodiment of the utility model;

[0025] Figure 4 A schematic diagram of a chute provided in an embodiment of the utility model;

[0026] Figure 5a Another schematic diagram of a slide provided in an embodiment of the utility model;

[0027] Figure 5b for Figure 5a AA direction cross-sectional view;

[0028] Figure 5c for Figure 5a BB direction cross-sectional view;

[0029] Figure 5d for Figure 5a CC direction cross-sectional view;

[0030] Figure 6 A schematic diagram of a roller bracket provided in an embodiment of the utility model;

[0031] Figure 7 for Figure 6 AA direction cross-sectional view;

[0032] Figure 8 A schematic diagram of a roller bracket and a roller provided in an embodiment of the utility model.

[0033] Reference numerals:

[0034] 1-slide groove; 11-front slide groove; 12-inner slide groove; 13-rear slide groove; 14-connecting beam; 15-limiting hole; 16-cross beam; 17-reinforcement plate; 2-roller bracket; 21-limiting mounting beam; 22-limiting beam; 23-limiting pin; 24-first through hole; 25-second through hole; 3-slide rail one; 4-slide rail two; 5-flip pedal; 6-locating pin; 7-roller; 71-pin shaft; 72-spacer; 73-sealing gasket; 74-cotter pin; 8-handle; 9-step anti-skid plate. DETAILED DESCRIPTION

[0035] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0036] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0037] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0038] In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present utility model, the meaning of "plurality" is more than two, unless otherwise clearly and specifically limited.

[0039] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0040] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0041] like Figure 1-3As shown, this embodiment provides a four-linkage ladder device for a passenger car, including a slide 1, a roller bracket 2, a slide rail 1 3, a slide rail 2 4 and a flip pedal 5. The roller bracket 2 is slidably arranged in the slide 1, the slide rail 1 3 and the roller bracket 2 are movably connected, the slide rail 2 4 and the roller bracket 2 are movably connected, and the two ends of the flip pedal 5 are movably connected to the slide rail 1 3 and the slide rail 2 4 respectively; the roller bracket 2, the slide rail 1, the slide rail 2 and the flip pedal 5 constitute a four-linkage mechanism. The slide 1 is assembled on the chassis of the passenger car. When stored, the slide rail 1 3, the slide rail 2 4 and the flip pedal 5 are stored in the slide 1, occupying a small space and being easy to store; after unfolding, the flip pedal 5 is stepped on by passengers, with a large stepping area, and both ends of the flip pedal 5 are fixed, so it is not easy to step on and flip the step.

[0042] See also Figure 4-5d The slide 1 includes a front slide 11, an inner slide 12 and a rear slide 13 connected in sequence. The front slide 11 and the rear slide 13 are arranged in parallel, and the inner slide 12 is connected to the front slide 11 and the rear slide 13 respectively. A four-bar linkage is arranged in the front slide 11 and the rear slide 13. After unfolding, the four-bar linkages arranged in front and behind are connected by the flip pedal 5. The ends of the front slide 11 and the rear slide 13 are also connected to a crossbeam 16.

[0043] like Figure 3 As shown, the roller bracket 2 respectively arranged on the front slide groove 11 and the rear slide groove 13 is connected with the limited position mounting beam 21, the limited position mounting beam 22 is arranged on the limited position mounting beam 21, the slide groove 1 is provided with a connecting beam 14, and the limited position beam 22 and the connecting beam 14 are arranged in coordination. When the slide rail 1 3 and the slide rail 2 4 are pulled out, the roller bracket 1 slides along with the slide rail 1 3 and the slide rail 2 4 until the slide rail 1 3 and the slide rail 2 4 are in the unfolded state, and the limited position beam 22 on the roller bracket 2 contacts the connecting beam 14, so as to prevent the slide rail 1 3 and the slide rail 2 4 from continuing to slide and being unusable.

[0044] like Figure 1 , Figure 8 As shown, a limit pin 23 is also provided on the outer side of the roller bracket 2, and a limit hole 15 is provided on the slide slot 1 along the movement direction of the slide rail 1 3 and the slide rail 2 4, and the limit pin 23 and the limit hole 15 are arranged in cooperation. A positioning pin 6 is provided on the slide rail 1 3 and / or the slide rail 2 4, and the positioning pin 6 and the limit hole 15 are arranged in cooperation. The limit pin 23 and the limit hole 15 cooperate to limit the movement direction of the roller bracket 2; the positioning pin 6 and the limit hole 15 cooperate to position the slide rail 1 3 and the slide rail 2 4 when they are stored. Specifically, the positioning pin 6 is a spring positioning pin.

[0045] Among them, a reinforcing plate 17 is also provided on the slide 1. Figure 5b As shown, the reinforcing plate 17 is used to improve the strength of the limiting hole 15 .

[0046] See also Figure 6The roller bracket 2 has first through holes 24 on both sides thereof, and the first through holes 24 are used to install the roller 7. The bottom of the roller bracket 2 has second through holes 25, and the bottom of the roller 7 contacts the slide groove 1 through the second through holes 25. Figure 8 The roller 7 adopts a rolling bearing, the inner ring of the rolling bearing is penetrated by a pin shaft 71, and then the axial movement of the rolling bearing is limited by a spacer sleeve 72; a sealing gasket 73 is provided at the end of the pin shaft 71, and then fixed by a cotter pin 74.

[0047] like Figure 2-3 As shown, a handle 8 is also provided on the slide rail 1. When the four-bar linkage is received in the slide slot 1, the four-bar linkage can be pulled out of the slide slot 1 through the handle 8. A step anti-slip plate 9 is provided on the flip pedal 5 to improve the anti-slip effect of the pedal.

[0048] In the specification of the present utility model, a lot of specific details are described. However, it is understood that the embodiments of the present utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A four-link ladder device for passenger cars, characterized in that: include: chute; A roller bracket is slidably disposed in the slide groove; Slide rail 1, movably connected to the roller bracket; Slide rail 2, movably connected to the roller bracket; A flip pedal, two ends of which are movably connected to the first slide rail and the second slide rail respectively; The roller bracket, the first slide rail, the second slide rail and the flip pedal form a four-bar linkage.

2. The four-link ladder climbing device for passenger cars according to claim 1, characterized in that: The slide groove comprises a front slide groove, an inner slide groove and a rear slide groove which are connected in sequence, the front slide groove and the rear slide groove are arranged in parallel and symmetrically, and the inner slide groove is respectively connected to the front slide groove and the rear slide groove.

3. The four-link ladder climbing device for passenger cars according to claim 1 or 2, characterized in that: A limited position mounting beam is connected between the roller brackets, and a limited position beam is arranged on the limited position mounting beam; a connecting beam is arranged on the slide slot, and the limited position beam and the connecting beam are arranged in coordination.

4. The four-link ladder climbing device for passenger cars according to claim 3, characterized in that: A limit pin is also arranged on the outer side of the roller bracket, and a limit hole is provided on the slide groove along the movement direction of the slide rail 1 and the slide rail 2, and the limit pin and the limit hole are arranged in coordination.

5. The four-link ladder climbing device for passenger cars according to claim 4, characterized in that: The slide rail 1 and / or the slide rail 2 are provided with positioning pins, and the positioning pins and the limiting holes are arranged in coordination.

6. The four-link ladder climbing device for passenger cars according to claim 4, characterized in that: The roller bracket has first through holes on both sides thereof, the first through holes being used for mounting the roller, the roller bracket has a second through hole on the bottom thereof, and the bottom of the roller contacts the slide groove through the second through hole.

7. The four-link ladder climbing device for passenger cars according to claim 1, characterized in that: The slide rail 1 is also provided with a handle.

8. The four-link ladder climbing device for passenger cars according to claim 1, characterized in that: The flip pedal is provided with a step anti-skid plate.

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