A step assembly and vehicle

Abstract

The utility model relates to a step assembly and a vehicle, wherein the step assembly comprises a fixed base, a step board, a flipping mechanism and a limiting mechanism; the fixed base is used for fixed connection with a vehicle body or a power battery frame, positioning holes are provided on both sides of the fixed base for installing the flipping mechanism and the limiting mechanism, and a limiting edge is provided at the bottom of the fixed base for limiting the step board when it is flipped up and down; the step board is connected to the fixed base through the flipping mechanism, and the step board can rotate around the flipping mechanism; the limiting mechanism comprises a limiting column, a guide bracket and a reset spring, the limiting column is parallel to the rotation axis of the step board, and the limiting column can perform linear reciprocating motion along the guide bracket through the reset spring, and is used to limit the step board when it is flipped up and down. The step assembly realizes that the step board can be flipped up when not in use through the flipping mechanism and the limiting mechanism, which greatly reduces the occupied lateral space, and can be flipped down when in use to provide sufficient stepping space.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy commercial vehicles, in particular to a step assembly and a vehicle. Background Art

[0002] With the popularization of new energy commercial vehicles, especially the widespread application of electric commercial vehicles and hybrid commercial vehicles, the requirements for space utilization and ergonomics in vehicle design are increasing. In new energy commercial vehicles, especially those with side-mounted power batteries, their body structure and internal space layout are significantly different from those of traditional fuel vehicles. This design makes it difficult for traditional boarding step assemblies to meet actual usage needs.

[0003] The step assembly refers to an auxiliary device installed on a vehicle (especially a commercial vehicle, special vehicle, etc.), which is designed to provide a convenient and safe platform for passengers or operators to get on and off the vehicle. The existing step assemblies for getting on and off the vehicle mainly include two structural forms:

[0004] One form is a fixed step assembly 10 fixed to the belly of the frame, such as Figure 1 This type of fixed step assembly is directly fixed on the belly of the vehicle frame, and is usually composed of a step plate and a bracket. Although this type of step assembly has a simple structure and is easy to install, the step plate is often fixed. When the width of the vehicle is limited, it is easy to occupy too much lateral space, especially in side-mounted power battery vehicles, resulting in the inability to install or the narrow step space after installation, which does not conform to the ergonomic design and makes it inconvenient for users to get on and off the vehicle;

[0005] Another form is a fixed step assembly 10' fixed to the side skirt plate, such as Figure 2 This fixed step assembly is integrated on the inner truss of the vehicle side skirt, and is usually composed of a step plate and a bracket. Although the structure of this step assembly is relatively compact, it cannot provide a larger step space when needed. In addition, since the side-mounted power battery occupies more lateral space, the traditional fixed step assembly is difficult to adapt to this design, affecting the overall width design of the vehicle.

[0006] In summary, the existing on-board step assembly cannot meet the functional requirements of side-mounted power battery commercial vehicles, so a new structural solution is urgently needed to solve these problems. Utility Model Content

[0007] The utility model discloses a step assembly and a vehicle, aiming to solve the technical problems existing in the prior art.

[0008] The utility model adopts the following technical solutions:

[0009] In a first aspect, an embodiment of the utility model provides a step assembly, including a fixed base, a step plate, a flip mechanism and a limit mechanism;

[0010] The fixed base is used to be fixedly connected to the vehicle body or the power battery frame. Positioning holes are provided on both sides of the fixed base for installing the flipping mechanism and the limiting mechanism. A limiting edge is provided at the bottom of the fixed base for limiting the step plate when it is flipped up and down.

[0011] The tread plate is connected to the fixed base through a flip mechanism, and the tread plate can rotate around the flip mechanism;

[0012] The limiting mechanism includes a limiting column, a guide bracket and a reset spring. The limiting column is parallel to the rotation axis of the step board. The limiting column can perform linear reciprocating motion along the guide bracket through the reset spring, and is used to limit the step board when it is flipped up and down.

[0013] As a preferred technical solution, the fixed base includes a fixed part and a functional part;

[0014] The fixing part is arranged at the top of the fixing base and is used for fixing and connecting with the vehicle body or the power battery frame;

[0015] The functional part is semi-frame-shaped, used to support and accommodate the stepping board, including a horizontally arranged transverse support arm and a pair of vertically extending vertical support arms. The two ends of the transverse support arm are respectively fixedly connected to the bottom ends of the two vertical support arms. The limiting edge is formed by extending upward from the transverse support arm, and the positioning hole is arranged on the vertical support arm.

[0016] As a preferred technical solution, the height of the limiting edge is configured such that when the step board is flipped down horizontally, the top of the limiting edge abuts against the bottom of the step board in this state;

[0017] The position of the limiting edge is configured such that when the tread is flipped up vertically, the rear side of the limiting edge abuts against the bottom front side of the tread in this state.

[0018] As a preferred technical solution, the positioning hole includes a first positioning hole and a second positioning hole, the first positioning hole is used to install the flip mechanism, and the second positioning hole is used to install the limit mechanism;

[0019] The two vertical support arms are each provided with a first positioning hole and a second positioning hole.

[0020] As a preferred technical solution, the tread further includes connecting arms on both sides, which extend vertically upward and are connected to the vertical supporting arms on both sides through a flip mechanism.

[0021] As a preferred technical solution, the flipping mechanism includes a positioning bracket and a positioning column. The positioning bracket is arranged between the connecting arm and the vertical support arm. The positioning column passes through the connecting arm and the positioning bracket in sequence and is inserted into the first positioning hole.

[0022] As a preferred technical solution, the guide bracket is provided with a guide groove, and the guide groove is parallel to the axis of the limiting column;

[0023] A guide column is provided on the limiting column, the axis of the guide column is perpendicular to the axis of the limiting column, the free end of the guide column is arranged in the guide groove, and can move linearly along the guide groove;

[0024] The two ends of the return spring are respectively in contact with the inner sides of the guide column and the guide bracket.

[0025] As a preferred technical solution, the outer end of the limiting column further includes a truncated cone, and the large diameter end of the truncated cone is fixedly connected to the limiting column;

[0026] When the frustum is subjected to the turning force of the tread, the limit column can drive the frustum to retreat along the guide groove and make the tread flip over the initial position of the frustum; when the tread flips over the initial position of the frustum, the frustum can be reset under the action of the reset spring, so as to limit the upper end of the tread.

[0027] As a preferred technical solution, the inclined surface of the truncated cone is configured to: be able to abut against the tread when it turns over;

[0028] The position of the truncated cone is configured such that when the step board is flipped up vertically, the inclined surface of the truncated cone can abut against the front side of the step board.

[0029] In a second aspect, an embodiment of the utility model further provides a vehicle, comprising a step assembly as described in any one of the above items.

[0030] One embodiment of the above utility model has the following advantages or beneficial effects:

[0031] Existing fixed step assemblies often require more lateral space in the vehicle, especially for new energy commercial vehicles with side-mounted power batteries, which often cannot meet the installation requirements. The step assembly provided by the utility model uses a flip mechanism and a limit mechanism to realize that the step board can be flipped up when not in use, greatly reducing the occupied lateral space.

[0032] Furthermore, due to space limitations, existing fixed steps are difficult to design to provide sufficient stepping space, resulting in a poor user experience. However, the step assembly provided by the utility model provides sufficient stepping space after the step plate is flipped down, which is more ergonomically designed and improves the convenience and comfort of users getting on and off the vehicle.

[0033] In order to ensure the stability of the tread when it is in the flipped up and folded down states, the utility model further adds a limiting mechanism and a limiting edge structure, wherein the limiting edge structure can be used to limit the tread when it is in the flipped up state, and can also be used to limit the tread when it is in the flipped down state. By further arranging a frustum in the limiting mechanism, the flipping force received when abutting the tread can be converted into an axial force for the limiting column to withdraw along the guide groove, thereby achieving effective limitation of the tread. At the same time, the combination of the inclined structure of the frustum and the return spring can effectively adjust the limiting force of the tread, and can effectively prevent the tread from making abnormal noises during vehicle driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the following is a brief introduction to the drawings required for the description of the embodiment, which constitute a part of the utility model. The schematic embodiment of the utility model and its description explain the utility model and do not constitute an improper limitation of the utility model. In the drawings:

[0035] Figure 1 It is a structural schematic diagram of a fixed step assembly fixed on the belly surface of a vehicle frame in the prior art;

[0036] Figure 2 It is a structural schematic diagram of a fixed step assembly fixed to a side skirt plate in the prior art;

[0037] Figure 3 This is a structural schematic diagram of a step assembly in a flipped-up state in a preferred implementation manner disclosed in Example 1 of the utility model;

[0038] Figure 4 This is a structural schematic diagram of a step assembly in a folded-down state in a preferred implementation manner disclosed in Example 1 of the utility model;

[0039] Figure 5 This is a structural schematic diagram of a fixed base in a preferred implementation manner disclosed in Example 1 of the utility model;

[0040] Figure 6 This is a schematic structural diagram of a step plate in a preferred embodiment disclosed in Example 1 of the utility model;

[0041] Figure 7 This is a structural schematic diagram of a flipping mechanism in a preferred implementation manner disclosed in Example 1 of the utility model;

[0042] Figure 8 This is a schematic structural diagram of a limiting column in a preferred implementation manner disclosed in Example 1 of the utility model;

[0043] Fig. 9 This is a schematic structural diagram of a guide bracket in a preferred implementation manner disclosed in Example 1 of the utility model;

[0044] Fig.10 This is a structural schematic diagram of a limiting structure in a preferred implementation manner disclosed in Example 1 of the utility model;

[0045] Fig.11 This is a structural schematic diagram of a limiting structure in another preferred implementation manner disclosed in Example 1 of the utility model.

[0046] Description of reference numerals:

[0047] Fixed step assembly 10, 10', fixed base 20, fixed part 21, lateral support arm 22, limiting edge 221, vertical support arm 23, first positioning hole 231, second positioning hole 232, step plate 30, connecting arm 31, flip mechanism 40, positioning bracket 41, positioning column 42, pin 43, limiting mechanism 50, limiting column 51, return spring 52, guide column 53, guide bracket 54, guide groove 541, locking tongue 55, frustum 56. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the utility model and the corresponding drawings. In the description of the utility model, it should be noted that the term "or" is usually used in the sense of including "and / or", unless the content clearly indicates otherwise.

[0049] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a mechanical connection or a magnetic connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0050] Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of 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.

[0051] Example 1

[0052] refer to Figure 3 — Fig.11The embodiment of the utility model provides a step assembly applied to a vehicle, and its structure includes a fixed base 20, a step board 30, a flip mechanism 40 and a limit mechanism 50, wherein the fixed base 20 is used to be fixedly connected to the vehicle body or the power battery frame, and is used to install the flip mechanism 40 and the limit mechanism 50; the step board 30 is connected to the fixed base 20 through the flip mechanism 40, and the step board 30 can rotate around the flip mechanism 40 so that it can be flipped up vertically when not in use, such as Figure 3 , in order to save horizontal space, it can be turned down when in use, such as Figure 4 , to provide sufficient stepping space; the limiting mechanism 50 is used to limit the stepping board 30 when it is flipped up and down.

[0053] Preferably, the above-mentioned step assembly is applied to new energy vehicles, preferably to new energy commercial vehicles, such as electric trucks, electric buses, electric logistics vehicles, electric sanitation vehicles, electric engineering vehicles, electric refrigerated trucks, etc., which are not listed one by one in this embodiment.

[0054] More preferably, the above-mentioned step assembly is used for new energy commercial vehicles with side-mounted power batteries. Specifically, "side-mounted" means that the power batteries are installed on both sides of the vehicle or on both sides of the chassis. This structure is mainly used in some large commercial vehicles, such as electric trucks, electric buses and electric tractors. Different from the traditional method of installing the battery in the middle or rear of the bottom of the vehicle, the "side-mounted" structure can optimize the spatial layout of the vehicle and improve the battery capacity and endurance.

[0055] like Figure 5 Preferably, the fixed base 20 is roughly in the shape of an inverted "X", including a fixing portion 21 and a functional portion, and the two are preferably integrally formed of a metal plate, wherein the fixing portion 21 is arranged at the top of the fixed base 20, and is used to connect with the fixing bracket of the vehicle body or the power battery frame, and the functional portion is semi-frame-shaped, used to support and accommodate the step board 30, including a horizontally arranged transverse support arm 22 and a pair of vertically extending vertical support arms 23, the two ends of the transverse support arm 22 are respectively fixedly connected to the bottom ends of the two vertical support arms 23, and the transverse support arm 22 extends upward to form a limiting edge 221, which is used to limit the step board 30 when it is flipped up and flipped down, and positioning holes are provided on the two vertical support arms 23 for installing the flipping mechanism 40 and the limiting mechanism 50.

[0056] In a preferred embodiment, the fixing portion 21 is arranged horizontally and is provided with at least one screw hole, so that the fixing portion 21 can be fixedly connected to the fixing bracket of the power battery frame by bolts.

[0057] In a preferred embodiment, the positioning holes include a first positioning hole 231 and a second positioning hole 232. The first positioning hole 231 is used to install the flipping mechanism 40, and the second positioning hole 232 is used to install the limiting mechanism 50. The two vertical support arms 23 are provided with a first positioning hole 231 and a second positioning hole 232; specifically, the first positioning hole 231 and / or the second positioning hole 232 can be set as a threaded hole or a general through hole as needed, and the sizes of the two can be the same or different, which is not specifically limited in this embodiment.

[0058] In a preferred embodiment, the length of the transverse support arm 22 is the distance between the two vertical support arms 23, and the length of the distance is equal to the sum of the length of the tread 30 and the length of the flip mechanism 40 on both sides thereof. The transverse support arm 22 can only extend upward at a position corresponding to the tread 30 to form a limiting edge 221 that blocks the tread 30.

[0059] In a preferred embodiment, the cross-section of the limiting edge 221 can be set to a rectangle or a triangle to enhance its structural strength and ensure that the limiting edge 221 can provide sufficient supporting force when the step board 30 is turned down and stepped on. Furthermore, the edge portion of the top of the limiting edge 221 can adopt a rounded corner design to reduce stress concentration and avoid damage to the step board 30; more preferably, the bottom surface of the step board 30 is provided with a groove that is compatible with the top of the limiting edge 221, and when the step board 30 is turned down, the groove can be embedded with the step board 30 to avoid shaking when the step board 30 is stepped on.

[0060] In another preferred embodiment, in order to reduce the impact or noise when the top end of the limiting edge 221 contacts the step board 30 , a buffer material or buffer structure, such as a rubber pad, may be further provided at the top end of the step board 30 .

[0061] Preferably, the height of the limiting edge 221 is configured as follows: when the step board 30 is flipped down horizontally, the top of the limiting edge 221 abuts against the bottom of the step board 30 in this state; the position of the limiting edge 221 is configured as follows: when the step board 30 is flipped up vertically, the rear side of the limiting edge 221 abuts against the front side of the bottom of the step board 30 in this state.

[0062] It should be noted that the above-mentioned "bottom of the tread 30" refers to the bottom of the tread 30 when it is turned down or turned up, and is not fixed. That is, the bottom of the tread 30 when it is turned down is equivalent to the top when it is turned up.

[0063] like Figure 6 In a preferred embodiment, the step board 30 further includes connecting arms 31 on both sides, the connecting arms 31 extend vertically upward, the connecting arms 31 are provided with mounting holes, and are connected to the vertical support arms 23 on both sides through the flip mechanism 40 respectively; Figure 7The flip mechanism 40 preferably includes a positioning bracket 41 and a positioning column 42 . The positioning bracket 41 is disposed between the connecting arm 31 and the vertical supporting arm 23 . The positioning column 42 passes through the connecting arm 31 and the positioning bracket 41 in sequence and is inserted into the first positioning hole 231 .

[0064] In a preferred embodiment, the positioning bracket 41 is formed by a square tube with a hole, which effectively controls the manufacturing and maintenance costs while ensuring functionality, and has a high cost-effectiveness ratio; and the positioning column 42 is configured as a holed bolt, and a pin 43 is also passed through one end of the hole. The holed bolt can be used to realize the rotation of the stepping plate 30.

[0065] In a preferred embodiment, the limiting mechanism 50 is provided on the vertical support arm 23 on only one side. In a more preferred embodiment, the limiting mechanism 50 is provided on the vertical support arms 23 on both sides to achieve more stable limiting of the step board 30 .

[0066] like Figure 8 — Fig.11 Preferably, the limiting mechanism 50 includes a limiting column 51, a guide bracket 54 and a return spring 52. The limiting column 51 is parallel to the rotation axis of the step board 30. The return spring 52 is arranged in the guide bracket 54, and the limiting column 51 is penetrated into the return spring 52. The return spring 52 abuts against it. Through the return spring 52, the limiting column 51 can perform a linear reciprocating motion along the guide bracket 54, which is used to limit the step board 30 when it is flipped up and down.

[0067] Preferably, the guide bracket 54 is provided with a guide groove 541, and the guide groove 541 is parallel to the axis of the limiting column 51. In a preferred embodiment, the guide bracket 54 is formed by slotting a square tube to control manufacturing and maintenance costs; a guide column 53 is provided on the limiting column 51, and the axis of the guide column 53 is perpendicular to the axis of the limiting column 51. The free end of the guide column 53 is arranged in the guide groove 541 and passes through the second positioning hole 232. The guide column 53 can move linearly along the guide groove 541; the two ends of the return spring 52 respectively abut against the inner side of the guide column 53 and the guide bracket 54.

[0068] Preferably, the length of the section of the limit column 51 located outside the guide bracket 54 is greater than the length of the positioning bracket 41 in the flipping mechanism 40, so as to ensure that it can abut against the tread 30 when it is flipped, thereby limiting the position of the tread 30; specifically, when the tread 30 is flipped, the limit column 51 can be manually pressed to retract it to facilitate the flipping of the tread 30.

[0069] like Fig.10 In a preferred embodiment, a locking tongue 55 is further provided at the outer end of the limiting column 51. The locking tongue 55 has a triangular cross-section, one side of which is an inclined surface.

[0070] refer to Fig.10 When the inclined surface of the locking tongue 55 faces outward, if the inclined surface of the locking tongue 55 is acted upon by the upward turning force of the stepping plate 30, the limiting column 51 can drive the locking tongue 55 to withdraw along the guide groove 541 and make the stepping plate 30 turn over the initial position of the locking tongue 55. After the stepping plate 30 turns over the initial position of the locking tongue 55, the locking tongue 55 can be reset under the action of the reset spring 52 to limit the upper end of the stepping plate 30. Since the inner side of the locking tongue 55 is a plane, after the stepping plate 30 is turned up, if it is to be turned down again, it is necessary to manually press the locking tongue 55 to make it withdraw, so as to facilitate the turning down of the stepping plate 30.

[0071] When the inclined surface of the locking tongue 55 faces inward, if you want to flip up the step board 30, you need to manually press the locking tongue 55 to make it retract, so as to facilitate the flipping up of the step board 30. When you need to flip down the step board 30, the inclined surface of the locking tongue 55 is subjected to the downward turning force of the step board 30. At this time, the limiting column 51 can drive the locking tongue 55 to withdraw along the guide groove 541, and make the step board 30 flip over the initial position of the locking tongue 55 to achieve flipping down.

[0072] like Fig.11 In a more preferred embodiment, the outer end of the limiting column 51 is further connected to a truncated cone 56 instead of the locking tongue 55, and the large diameter end of the truncated cone 56 is fixedly connected to the limiting column 51; when the truncated cone 56 is subjected to the turning force of the step board 30, the inclined surface of the truncated cone 56 provides a physical obstacle, forcing the step board 30 to push the truncated cone 56 away. At this time, the limiting column 51 can drive the truncated cone 56 to retreat along the guide groove 541 and make the step board 30 turn over the initial position of the truncated cone 56. When the step board 30 turns over the truncated cone 56, the frustum 56 can be reset under the action of the reset spring 52, and is used to limit the upper end of the step board 30, ensuring that the step board 30 is stable and immovable in the vertical flip-up state; when the step board 30 is flipped down, the two side edges of the step board 30 contact the inclined surface of the frustum 56 again and push the frustum 56 away. After flipping over the frustum 56, the frustum 56 returns to the initial position under the action of the reset spring 52, and limits the lower end of the step board 30, ensuring that the step board 30 is stable and immovable in the horizontal flip-down state.

[0073] Preferably, the inclined surface of the frustum 56 is configured to abut against the tread 30 when it is flipped over; the position of the frustum 56 is configured so that when the tread 30 is flipped up vertically, the inclined surface of the frustum 56 can abut against the front side of the tread 30.

[0074] Unlike the locking tongue 55, the inside and outside of the frustum 56 have inclined surfaces, which are progressive contact surfaces. When the step plate 30 contacts the frustum 56, the contact area and contact force can be gradually increased, making the flipping process smoother, so that the step plate 30 can gradually apply force during the process of flipping up or down, converting the flipping force into an axial force along the limit column 51, thereby making the flipping process smoother and avoiding abrupt changes in resistance. There is no need to manually retract the limit column 51; and by combining with the return spring 52, after the step plate 30 flips over the frustum 56, the return spring 52 can automatically reset the frustum 56 to its initial position, thereby realizing the automatic recovery function of the limit mechanism 50 without the need for additional manual adjustment.

[0075] Compared with the prior art, the step assembly provided in this embodiment realizes that the step board 30 can be flipped up when not in use through the flipping mechanism 40 and the limiting mechanism 50, which greatly reduces the lateral space occupied, and can be flipped down when in use to provide sufficient stepping space; to ensure the stability of the step board 30 in the flipped up and flipped down states, the limiting edge 221 can be used to limit the step board 30 in the flipped up state, and can also be used to limit the step board 30 in the flipped down state, and by further arranging a frustum 56 in the limiting mechanism 50, the flipping force received when abutting the step board 30 can be converted into an axial force for the limiting column 51 to withdraw along the guide groove 541, and effective limitation of the step board 30 can be achieved. At the same time, the combination of the inclined surface structure of the frustum 56 and the return spring 52 can effectively realize the adjustment of the limiting force of the step board 30, and can effectively prevent the step board 30 from making abnormal noises during the driving of the vehicle.

[0076] It should be understood that the accessory system includes but is not limited to the components mentioned above. Those skilled in the art can add, subtract or other selectively configure the components of the accessory system according to specific application requirements to achieve the desired functions and effects. These modifications and changes should be regarded as part of the present invention and should not be limited to the specific embodiments described herein.

[0077] Example 2

[0078] This embodiment provides a vehicle, which is equipped with the step assembly described in the above embodiment 1. The technical features already included in the above embodiment 1 are naturally inherited in this embodiment and will not be repeated here.

[0079] Although example embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above example embodiments are merely exemplary and are not intended to limit the scope of the present application to this. Those of ordinary skill in the art may make various changes and modifications therein without departing from the scope and spirit of the present application. All these changes and modifications are intended to be included within the scope of the present application as required by the appended claims.

[0080] In the description provided herein, a large number of specific details are described. However, it is understood that the embodiments of the present application can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0081] Similarly, it should be understood that in order to streamline the present application and help understand one or more of the various utility model aspects, in the description of the exemplary embodiments of the present application, the various features of the present application are sometimes grouped together into a single embodiment, figure, or description thereof. However, the method of the present application should not be interpreted as reflecting the following intention: the claimed application requires more features than the features clearly stated in each claim. More specifically, as reflected in the corresponding claims, its utility model point is that the corresponding technical problem can be solved with less than all the features of a single disclosed embodiment. Therefore, the claims following the specific embodiment are hereby explicitly incorporated into the specific embodiment, wherein each claim itself serves as a separate embodiment of the present application.

[0082] It will be understood by those skilled in the art that, except for mutually exclusive features, all features disclosed in this specification (including the accompanying claims, abstracts and drawings) and all processes or units of any method or device disclosed in this specification may be combined in any combination. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstracts and drawings) may be replaced by an alternative feature that provides the same, equivalent or similar purpose.

Claims

1. A step assembly, characterized in that: It includes a fixed base, a step plate, a turning mechanism and a limiting mechanism; The fixed base is used to be fixedly connected to the vehicle body or the power battery frame, and positioning holes are provided on both sides of the fixed base for installing the flipping mechanism and the limiting mechanism. The bottom of the fixed base is provided with a limiting edge for limiting the position of the step plate when it is flipped up and down; The tread plate is connected to the fixed base through the flip mechanism, and the tread plate can rotate around the flip mechanism; The limiting mechanism includes a limiting column, a guide bracket and a return spring. The limiting column is parallel to the rotation axis of the step board. The limiting column can perform linear reciprocating motion along the guide bracket through the return spring, and is used to limit the step board when it is flipped up and down.

2. The step assembly according to claim 1, characterized in that: The fixed base includes a fixed portion and a functional portion; The fixing portion is arranged at the top of the fixing base and is used for fixing and connecting with the vehicle body or the power battery frame; The functional part is semi-frame-shaped, used to support and accommodate the stepping board, including a horizontally arranged transverse support arm and a pair of vertically extending vertical support arms, the two ends of the transverse support arm are respectively fixedly connected to the bottom ends of the two vertical support arms, the limiting edge is formed by extending upward from the transverse support arm, and the positioning hole is arranged on the vertical support arm.

3. The step assembly according to claim 2, characterized in that: The height of the limiting edge is configured such that when the step board is flipped down horizontally, the top of the limiting edge abuts against the bottom of the step board in this state; The position of the limiting edge is configured such that when the tread is flipped up vertically, the rear side of the limiting edge abuts against the front side of the bottom of the tread in this state.

4. The step assembly according to claim 2, characterized in that: The positioning holes include a first positioning hole and a second positioning hole, the first positioning hole is used to install the flip mechanism, and the second positioning hole is used to install the limit mechanism; The two vertical support arms are both provided with the first positioning hole and the second positioning hole.

5. The step assembly according to claim 4, characterized in that: The tread plate also includes connecting arms on both sides, which extend vertically upward and are respectively connected to the vertical supporting arms on both sides through the turning mechanisms.

6. The step assembly according to claim 5, characterized in that: The flip mechanism includes a positioning bracket and a positioning column. The positioning bracket is arranged between the connecting arm and the vertical supporting arm. The positioning column passes through the connecting arm and the positioning bracket in sequence and is inserted into the first positioning hole.

7. The step assembly according to claim 1, characterized in that: The guide bracket is provided with a guide groove, and the guide groove is parallel to the axis of the limiting column; A guide column is provided on the limiting column, the axis of the guide column is perpendicular to the axis of the limiting column, and the free end of the guide column is arranged in the guide groove and can move linearly along the guide groove; The two ends of the return spring are respectively in contact with the inner sides of the guide column and the guide bracket.

8. The step assembly according to claim 7, characterized in that: The outer end of the limiting column also includes a truncated cone, and the large diameter end of the truncated cone is fixedly connected to the limiting column; When the truncated cone is subjected to the turning force of the step board, the limiting column can drive the truncated cone to retreat along the guide groove and make the step board flip over the initial position of the truncated cone; after the step board flips over the initial position of the truncated cone, the truncated cone can be reset under the action of the reset spring, so as to limit the upper end of the step board.

9. The step assembly according to claim 8, characterized in that: The inclined surface of the truncated cone is configured to abut against the tread when the tread is turned over; The position of the truncated cone is configured such that when the tread is flipped up vertically, the inclined surface of the truncated cone can abut against the front side of the tread.

10. A vehicle, characterized in that: It comprises a step assembly as described in any one of claims 1 to 9.

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