Luggage case convenient for climbing stairs

Abstract

The utility model discloses a luggage case convenient to climb stairs, which relates to the field of luggage cases, and comprises a case body, a pull rod and a plurality of universal wheels, the pull rod is arranged on the mounting surface of the case body, and the plurality of universal wheels are arranged at the bottom of the case body; the luggage case further comprises two stair climbing wheel assemblies and two adjusting assemblies, the two adjusting assemblies are both arranged on the mounting surface of the case body, and the stair climbing wheel assemblies are rotationally connected with the corresponding adjusting assemblies; each stair climbing wheel assembly is provided with a containing position and an unfolding position, when the two stair climbing wheel assemblies are located at the containing positions, the two stair climbing wheel assemblies are located on the same side of the box body, and when the two stair climbing wheel assemblies are located at the unfolding positions, the two stair climbing wheel assemblies are located on the two opposite sides of the box body. And the stair climbing wheel assembly and the adjusting assembly are relatively fixed. The luggage case has the advantages that the luggage case can be conveniently driven to climb stairs, and the stair climbing wheel assemblies are convenient to store and unfold.

Description

Technical Field

[0001] The utility model relates to the technical field of luggage cases, in particular to a luggage case which is convenient for climbing stairs. Background Art

[0002] For residential buildings without elevators, it is very inconvenient to carry large or heavy suitcases upstairs. Although some existing solutions have the function of climbing stairs, the climbing wheels cannot be stored, which affects the appearance of the suitcase, or the storage and unfolding of the climbing wheels are inconvenient, affecting the user experience. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art to a certain extent. To this end, the utility model provides a luggage case that is convenient for climbing stairs, which has the advantages of being convenient for driving the luggage case to climb stairs and the stair climbing wheel assembly being convenient for storage and unfolding.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A suitcase convenient for climbing stairs comprises a suitcase body, a pull rod, and a plurality of universal wheels. The pull rod is arranged on the mounting surface of the suitcase body, and the plurality of universal wheels are arranged at the bottom of the suitcase body.

[0006] The suitcase also includes two stair-climbing wheel assemblies and two adjustment assemblies. The two adjustment assemblies are both arranged on the mounting surface of the box body, and the stair-climbing wheel assemblies are rotatably connected to the corresponding adjustment assemblies. The stair-climbing wheel assemblies have a storage position and a deployment position. When the two stair-climbing wheel assemblies are in the storage position, the two stair-climbing wheel assemblies are located on the same side of the box body. When the two stair-climbing wheel assemblies are in the deployment position, the two stair-climbing wheel assemblies are located on opposite sides of the box body, and the stair-climbing wheel assemblies and the adjustment assemblies are relatively fixed.

[0007] Through the cooperation of the adjustment component and the climbing wheel component, the climbing wheel component can be switched between the storage position and the deployment position by rotation. When it is necessary to carry a suitcase up the stairs, the climbing wheel component is rotated to the deployment position, and the suitcase can be easily pulled up the stairs under the drive of the climbing wheel component. In addition, when the climbing wheel component is in the deployment position, it is relatively fixed with the adjustment component, thereby increasing the stability when using the climbing wheel component and improving the efficiency of driving the suitcase up the stairs.

[0008] Optionally, the adjustment assembly includes a guide rod, a first connecting member, a second connecting member and an elastic member, and both ends of the guide rod are arranged on the mounting surface of the box body;

[0009] The elastic member, the first connecting member and the second connecting member are all sleeved on the guide rod, the first connecting member is arranged between the elastic member and the second connecting member, the first connecting member can move along the axial direction of the guide rod, and the second connecting member can rotate with the axial direction of the guide rod as the rotation axis;

[0010] The stair-climbing wheel assembly is connected to the second connecting member, and when the stair-climbing wheel assembly is in the storage position or the deployment position, the first connecting member is engaged with the second connecting member.

[0011] Optionally, a plurality of first guide portions and a plurality of first guide grooves are formed at one end of the first connecting member facing the second connecting member, and the plurality of first guide portions and the plurality of first guide grooves are sequentially staggered and distributed along the edge of the first connecting member;

[0012] A plurality of second guide portions and a plurality of second guide grooves are formed on one end of the second connecting member facing the first connecting member, and the plurality of second guide portions and the plurality of second guide grooves are sequentially staggered and distributed along the edge of the second connecting member;

[0013] When the stair climbing wheel assembly is in the storage position or the deployment position, the first guide portion is clamped in the corresponding second guide groove, and the second guide portion is clamped in the corresponding first guide groove.

[0014] Optionally, when the stair climbing wheel assembly rotates from the storage position to the deployed position, the elastic member can be compressed so that the second connecting member pushes the first connecting member to move away from the bottom of the box body during rotation, and the elastic member can be reset so that the first guide portion is engaged in the second guide groove, and the second guide portion is engaged in the first guide groove.

[0015] Optionally, the suitcase further includes a first push rod and a second push rod, wherein the first push rod is connected to one of the first connecting members, and the second push rod is connected to another one of the first connecting members.

[0016] Optionally, one end of the first push rod away from the corresponding first connecting member is connected to the second push rod.

[0017] Optionally, the climbing wheel assembly includes a connecting rod, a triangular bracket and multiple climbing wheels, one end of the connecting rod is connected to the side wall of the corresponding second connecting member, the other end of the connecting rod is rotatably connected to the center of the triangular bracket, and each of the climbing wheels is rotatably connected to each top end of the triangular bracket.

[0018] Optionally, the stair climbing wheel assembly further comprises a support arm, one end of the support arm is connected to the connecting rod, the other end of the support arm is rotatably connected to the center of the triangular bracket, and the length direction of the support arm is consistent with the radial direction of the stair climbing wheel.

[0019] Optionally, the elastic member comprises a spring.

[0020] Optionally, the box body also includes a mounting cover, and the mounting surface includes a first mounting surface and a second mounting surface, the first mounting surface is close to the top of the box body, and the second mounting surface is close to the bottom of the box body, the pull rod is arranged on the first mounting surface, and the two adjustment components are arranged on the second mounting surface; the side of the mounting cover away from the bottom of the box body is connected to the first mounting surface, and an mounting cavity is formed between the mounting cover and the second mounting surface, and when the climbing wheel assembly is in the storage position, the climbing wheel assembly can be completely located in the mounting cavity.

[0021] These features and advantages of the utility model will be disclosed in detail in the following specific embodiments and drawings. The best implementation or means of the utility model will be fully presented in conjunction with the drawings, but it is not a limitation of the technical solution of the utility model. In addition, these features, elements and components appearing in each of the following texts and drawings are multiple, and are marked with different symbols or numbers for convenience, but all represent components with the same or similar structure or function. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The utility model is further described below in conjunction with the accompanying drawings:

[0023] Figure 1 This is a rear view of a suitcase with a stair climbing wheel assembly in a storage position according to an embodiment of the utility model;

[0024] Figure 2 It is a side view of the suitcase in the above embodiment of the utility model;

[0025] Figure 3 for Figure 2 A magnified image of point A;

[0026] Figure 4 This is a rear view of a suitcase with a stair climbing wheel assembly in an unfolded position according to another embodiment of the utility model;

[0027] Figure 5 It is a side view of the suitcase in the above embodiment of the utility model;

[0028] Figure 6 This is a side view of the suitcase with the installation cover opened in the above embodiment of the utility model.

[0029] Among them, 10, box body; 101, first mounting surface; 102, second mounting surface; 10a, mounting cavity; 11, pull rod; 12, adjustment assembly; 121, guide rod; 122, elastic member; 123, first connecting member; 1231, first guide part; 123a, first guide groove; 124, second connecting member; 1241, second guide part; 124a, second guide groove; 13, climbing wheel assembly; 131, climbing wheel; 132, triangular bracket; 133, support arm; 134, connecting rod; 135, fixing plate; 14, universal wheel; 15, first push rod; 16, second push rod; 17, mounting cover. DETAILED DESCRIPTION

[0030] The following is a detailed description of embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments in the implementation manner are intended to be used to explain the present invention and should not be construed as limiting the present invention.

[0031] References in this specification to "one embodiment" or "an example" or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment itself may be included in at least one embodiment of the present patent disclosure. The appearance of the phrase "in one embodiment" in various places in the specification does not necessarily refer to the same embodiment.

[0032] This embodiment provides a suitcase that is convenient for climbing stairs, including a suitcase body 10, a pull rod 11, and a plurality of universal wheels 14. The pull rod 11 is arranged on the installation surface of the suitcase body 10, and the plurality of universal wheels 14 are arranged at the bottom of the suitcase body 10.

[0033] The suitcase further includes two stair climbing wheel assemblies 13 and two adjustment assemblies 12. Both adjustment assemblies 12 are arranged on the mounting surface of the case 10, and the stair climbing wheel assemblies 13 are rotatably connected with the corresponding adjustment assemblies 12. The stair climbing wheel assemblies 13 have a storage position and an unfolding position. When the two stair climbing wheel assemblies 13 are in the storage position, the two stair climbing wheel assemblies 13 are located on the same side of the case 10. When the two stair climbing wheel assemblies 13 are in the unfolding position, the two stair climbing wheel assemblies 13 are located on opposite sides of the case 10, and the stair climbing wheel assemblies 13 and the adjustment assemblies 12 are relatively fixed.

[0034] Through the cooperation between the adjustment component 12 and the climbing wheel component 13, the climbing wheel component 13 can be switched between the storage position and the deployment position by rotation. When it is necessary to carry a suitcase up the stairs, the climbing wheel component 13 is rotated to the deployment position, and the suitcase can be easily pulled up the stairs under the drive of the climbing wheel component 13. In addition, when the climbing wheel component 13 is in the deployment position, it is relatively fixed with the adjustment component 12, thereby increasing the stability when using the climbing wheel component 13 and improving the efficiency of driving the suitcase up the stairs.

[0035] It should be noted that when the climbing wheel assembly 13 is in the storage position, the climbing wheel assembly 13 is located on one side of the mounting surface of the box body 10, and when the climbing wheel assembly 13 is in the deployed position, one of the climbing wheel assemblies 13 is located on one side of the first side surface of the box body 10, and the other climbing wheel assembly 13 is located on one side of the second side surface, wherein the first side surface and the second side surface are both adjacent to the mounting surface, and the second side surface is opposite to the second side surface.

[0036] Optionally, the adjustment assembly 12 includes a guide rod 121 , a first connecting member 123 , a second connecting member 124 and an elastic member 122 , and both ends of the guide rod 121 are arranged on the mounting surface of the box body 10 .

[0037] The elastic member 122, the first connecting member 123 and the second connecting member 124 are all sleeved on the guide rod 121, the first connecting member 123 is arranged between the elastic member 122 and the second connecting member 124, the first connecting member 123 can move along the axial direction of the guide rod 121, and the second connecting member 124 can rotate with the axial direction of the guide rod 121 as the rotation axis, and the axial direction of the guide rod 121 is consistent with the height direction of the box body 10.

[0038] The stair-climbing wheel assembly 13 is connected to the second connecting member 124 . When the stair-climbing wheel assembly 13 is in the storage position or the deployment position, the first connecting member 123 is engaged with the second connecting member 124 .

[0039] When the climbing wheel assembly 13 is in the storage position or the deployment position, under the squeezing action of the elastic member 122, the first connecting member 123 and the second connecting member 124 are engaged, so that the climbing wheel assembly 13 and the adjustment assembly 12 are relatively fixed, which increases the stability of the climbing wheel assembly 13 when it is stored and working. In addition, when the climbing wheel assembly 13 switches between the storage position and the deployment position, the climbing wheel assembly 13 is driven to rotate by rotating the second connecting member 124. The elastic member 122 can be compressed and reset to ensure that the first connecting member 123 is always in contact with the second connecting member 124 during the switching process, thereby limiting the axial movement of the second connecting member 124 along the guide rod 121, ensuring that the climbing wheel assembly 13 remains stable and does not shake when switching positions, thereby improving the user experience.

[0040] There is no special limitation on the specific structure of the first connecting member 123 and the second connecting member 124, as long as the first connecting member 123 and the second connecting member 124 are kept in contact when the second connecting member 124 rotates, and the first connecting member 123 and the second connecting member 124 are engaged when the stair climbing wheel assembly 13 is in the storage position and the deployment position. In an optional embodiment, a plurality of first guide portions 1231 and a plurality of first guide grooves 123a are formed at one end of the first connecting member 123 facing the second connecting member 124, and the plurality of first guide portions 1231 and the plurality of first guide grooves 123a are sequentially staggered and distributed along the edge of the first connecting member 123.

[0041] A plurality of second guide portions 1241 and a plurality of second guide grooves 124 a are formed at one end of the second connecting member 124 facing the first connecting member 123 . The plurality of second guide portions 1241 and the plurality of second guide grooves 124 a are sequentially staggered and distributed along the edge of the second connecting member 124 .

[0042] When the stair-climbing wheel assembly 13 is in the deployed position or the stored position, the first guide portion 1231 is engaged in the corresponding second guide groove 124a, and the second guide portion 1241 is engaged in the corresponding first guide groove 123a.

[0043] It can be understood that the first guide portion 1231, the first guide groove 123a, the second guide portion 1241, and the second guide groove 124a are arranged in the same number, so that when the stair climbing wheel assembly 13 is in the storage position or the deployment position, each first guide portion 1231 can be inserted into the corresponding second guide groove 124a, and each second guide portion 1241 can be inserted into the corresponding first guide groove 123a.

[0044] It should be pointed out that in order to achieve a fixed connection between the stair climbing wheel assembly 13 and the adjustment assembly 12 when in the deployed position, a limiting surface is provided in the first guide groove 123a, and the limiting surface is parallel to the axial direction of the guide rod 121, so that after the second guide portion 1241 is inserted into the corresponding guide groove, the second guide portion 1241 cannot rotate in the opposite direction due to the limiting action of the limiting surface. When the climbing wheel assembly 13 is in the storage position, the second guide portion 1241 of the second connecting member 124 is also inserted into the corresponding first guiding groove 123a. Although the rotation of the second connecting member 124 is not limited by the limiting surface when the climbing wheel assembly 13 rotates from the storage position to the deployment position, when the climbing wheel assembly 13 is in the storage position, under the resetting and squeezing action of the elastic member 122, the first connecting member 123 exerts a force on the second connecting member 124 toward the bottom of the box body 10, so that the first connecting member 123 and the second connecting member 124 are relatively fixed, and external force is required to rotate the second connecting member 124 to drive the climbing wheel assembly 13 to rotate. The elastic member 122 mentioned above can be a spring.

[0045] In an optional embodiment, the stair climbing wheel assembly 13 further includes two fixing plates 135, which are respectively connected to the two ends of the guide rod 121, the fixing plates 135 are fixed on the mounting surface, the second connecting member 124 is sleeved on the guide rod 121, and the second connecting member 124 abuts against the fixing plates 135. A stopper protruding outward is provided on the side wall of the second connecting member 124, and a stopper is provided on the side of the fixing plate 135 close to the bottom of the box body 10 facing the second connecting member 124, and the stopper is located on the periphery of the second connecting member 124. When the stair climbing wheel assembly 13 is in the storage position, the stopper is located on the side of the second connecting member 124 away from the mounting surface. When the stair climbing wheel assembly 13 is in the deployed position, the limit block abuts against the stop block to prevent the second connecting member 124 from continuing to rotate along the original rotation direction. At the same time, due to the cooperation between the second guide portion 1241 and the first guide groove 123a, the second connecting member 124 cannot rotate back, thereby increasing the stability of the stair climbing wheel assembly 13 when used for climbing stairs.

[0046] Optionally, when the stair climbing wheel assembly 13 rotates from the storage position to the deployed position, the elastic member 122 can be compressed so that the second connecting member 124 pushes the first connecting member 123 to move away from the bottom of the box body 10 during rotation, and the elastic member 122 can be reset so that the first guide portion 1231 is engaged in the second guide groove 124a, and the second guide portion 1241 is engaged in the first guide groove 123a.

[0047] Through the cooperation of the first guide portion 1231, the first guide groove 123a, the second guide portion 1241 and the second guide groove 124a, when the stair climbing wheel assembly 13 needs to be rotated from the storage position to the deployment position, the second connecting member 124 is rotated, and under the action of the guiding inclined surface of the first guide groove 123a, the second guide portion 1241 of the second connecting member 124 pushes the first connecting member 123 to move along the axial direction of the guide rod 121 in the direction away from the second connecting member 124, until the second guide portion 1241 is opposite to another adjacent first guide groove 123a. Under the reset push of the elastic member 122, the second guide portion 1241 is inserted into the first guide groove 123a. The cooperation process of the remaining second guide portions 1241 and the corresponding first guide grooves 123a is the same as the above process.

[0048] The guiding slopes of the two first connectors 123 are inclined in opposite directions. For example, when looking at the suitcase from behind, the guiding slope of the first guiding groove 123a of the first connector 123 on the right is inclined downward, and the guiding slope of the first guiding groove 123a of the first connector 123 on the left is inclined upward. Taking the first connector 123 on the right as an example, the second connector 124 can rotate counterclockwise, and under the action of the guiding slope, the second guide portion 1241 continuously pushes the first connector 123 to move away from the bottom of the box body 10, thereby driving the climbing wheel assembly 13 to rotate from the storage position to the deployment position.

[0049] Preferably, the number of the first guide portion 1231, the first guide groove 123a, the second guide portion 1241, and the second guide groove 124a is 4, so that when the second guide portion 1241 of the second connecting member 124 rotates from one of the first guide grooves 123a to another adjacent guide groove, it rotates approximately 90 degrees. In addition, when the second guide portion 1241 is inserted into the first guide groove 123a, the second guide portion 1241 is in contact with the inner wall of the first guide groove 123a, and when the first guide portion 1231 is inserted into the second guide groove 124a, the first guide portion 1231 is in contact with the inner wall of the second guide groove 124a.

[0050] In an optional embodiment, the suitcase further includes a first push rod 15 and a second push rod 16 , wherein the first push rod 15 is connected to one of the first connecting members 123 , and the second push rod 16 is connected to another one of the first connecting members 123 .

[0051] When the stair climbing wheel assembly 13 is in the deployed position, the second connecting member 124 cannot rotate in the opposite direction due to the limiting effect of the limiting surface of the first guide groove 123a. At this time, the first connecting member 123 needs to be manually adjusted to move the first connecting member 123 away from the second connecting member 124, thereby contacting the limiting effect of the first guide groove 123a on the second connecting member 124. The first push rod 15 and the second push rod 16 facilitate the adjustment of the first connecting member 123.

[0052] Optionally, one end of the first push rod 15 away from the corresponding first connecting member 123 is connected to the second push rod 16 .

[0053] By connecting the first push rod 15 with the second push rod 16, when the stair climbing wheel assembly 13 needs to be stored, the fixed state of the two stair climbing wheel assemblies 13 can be released at the same time by pulling the connection between the first push rod 15 and the second push rod 16, thereby improving the storage efficiency.

[0054] In order to facilitate user operation, preferably, the adjustment component 12 also includes a torsion spring, which is arranged between the guide rod 121 and the inner wall of the second connecting member 124. The middle part of the torsion spring is a spring body, and the two ends are spring heads. The spring body is sleeved on the guide rod 121, and the second connecting member 124 is sleeved on the spring body, one of the spring heads is fixed on the guide rod 121, and the other spring head abuts on the inner wall of the second connecting member 124, and when the climbing wheel assembly 13 is in the unfolded position, the spring head of the torsion spring is in a compressed state. In this way, when the climbing wheel assembly 13 needs to be stored, after pulling the connection between the first push rod 15 and the second push rod 16, under the action of the torsion spring, the second connecting member 124 automatically rotates, driving the climbing wheel assembly 13 to rotate to the storage position.

[0055] In an optional embodiment, the stair climbing wheel assembly 13 includes a connecting rod 134, a triangular bracket 132 and a plurality of stair climbing wheels 131, one end of the connecting rod 134 is connected to the side wall of the corresponding second connecting member 124, the other end of the connecting rod 134 is rotatably connected to the center of the triangular bracket 132, and each of the climbing wheels 131 is rotatably connected to each top end of the triangular bracket 132.

[0056] The plurality of climbing wheels 131 are rotated as a whole with the axial direction of the connecting rod 134 as the rotation axis by the rotation connection of the triangular bracket 132 and each climbing wheel 131 is rotationally connected to the triangular bracket 132 respectively, so that each climbing wheel 131 rotates along its own rotation axis, thereby achieving the function of the luggage case climbing stairs with the cooperation of the connecting rod 134, the triangular bracket 132 and the plurality of climbing wheels 131. In this embodiment, the number of climbing wheels 131 is not particularly limited. Preferably, the number of climbing wheels 131 is 3, and each climbing wheel 131 is respectively arranged at each top end of the triangular bracket 132.

[0057] Optionally, the stair climbing wheel assembly 13 further includes a support arm 133 , one end of the support arm 133 is connected to the connecting rod 134 , the other end of the support arm 133 is rotatably connected to the center of the triangular bracket 132 , and the length direction of the support arm 133 is consistent with the radial direction of the stair climbing wheel 131 .

[0058] By providing the support arm 133, when the climbing wheel assembly 13 is in the deployed position, the climbing wheel 131 can be as far away from the box 10 as possible, reducing the diameter requirement of the climbing wheel 131 and preventing the box 10 from contacting the stairs during climbing and causing damage to the box 10.

[0059] In an optional embodiment, the box body 10 further includes a mounting cover 17, the mounting surface includes a first mounting surface 101 and a second mounting surface 102, the first mounting surface 101 is close to the top of the box body 10, the second mounting surface 102 is close to the bottom of the box body 10, the pull rod 11 is arranged on the first mounting surface 101, and the two adjustment components 12 are arranged on the second mounting surface 102. The side of the mounting cover 17 away from the bottom of the box body 10 is connected to the first mounting surface 101, and a mounting cavity 10a is formed between the mounting cover 17 and the second mounting surface 102. When the stair climbing wheel assembly 13 is in the storage position, the stair climbing wheel assembly 13 can be completely located in the mounting cavity 10a.

[0060] By providing the mounting cover 17, when the stair climbing wheel assembly 13 is in the storage position, it can be completely stored in the mounting cavity 10a formed between the mounting cover 17 and the first mounting surface 101, thereby increasing the aesthetics of the suitcase. The mounting cover 17 and the case body 10 can be connected by a zipper.

[0061] In order to further improve the aesthetics of the box, a magnetic part is provided on the first mounting surface 101 and a magnetic part is provided on the corresponding position of the mounting cover 17, so that after the mounting cover 17 is opened and flipped to fit the first mounting surface 101, it can be adsorbed on the first mounting surface 101.

[0062] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention shall be included in the scope of the claims.

Claims

1. A suitcase that is convenient for climbing stairs, comprising a suitcase body, a pull rod, and a plurality of universal wheels, wherein the pull rod is arranged on the mounting surface of the suitcase body, and the plurality of universal wheels are arranged at the bottom of the suitcase body, characterized in that: The luggage case further comprises two stair climbing wheel assemblies and two adjustment assemblies, both of which are arranged on the mounting surface of the case, and the stair climbing wheel assemblies are rotatably connected to the corresponding adjustment assemblies; the stair climbing wheel assemblies have a storage position and an unfolding position, and when the two stair climbing wheel assemblies are in the storage position, the two stair climbing wheel assemblies are located on the same side of the case, and when the two stair climbing wheel assemblies are in the unfolding position, the two stair climbing wheel assemblies are located on opposite sides of the case, and the stair climbing wheel assemblies are relatively fixed to the adjustment assemblies; The adjustment assembly comprises a guide rod, a first connecting member, a second connecting member and an elastic member, and both ends of the guide rod are arranged on the mounting surface of the box body; The elastic member, the first connecting member and the second connecting member are all sleeved on the guide rod, the first connecting member is arranged between the elastic member and the second connecting member, the first connecting member can move along the axial direction of the guide rod, and the second connecting member can rotate with the axial direction of the guide rod as the rotation axis; The stair-climbing wheel assembly is connected to the second connecting member, and when the stair-climbing wheel assembly is in the storage position or the deployment position, the first connecting member is engaged with the second connecting member.

2. The luggage case according to claim 1, characterized in that: A plurality of first guide portions and a plurality of first guide grooves are formed on one end of the first connecting member facing the second connecting member, and the plurality of first guide portions and the plurality of first guide grooves are sequentially staggered and distributed along the edge of the first connecting member; A plurality of second guide portions and a plurality of second guide grooves are formed on one end of the second connecting member facing the first connecting member, and the plurality of second guide portions and the plurality of second guide grooves are sequentially staggered and distributed along the edge of the second connecting member; When the stair climbing wheel assembly is in the storage position or the deployment position, the first guide portion is clamped in the corresponding second guide groove, and the second guide portion is clamped in the corresponding first guide groove.

3. The luggage case according to claim 2, characterized in that: When the stair climbing wheel assembly rotates from the storage position to the deployment position, the elastic member can be compressed so that the second connecting member pushes the first connecting member to move away from the bottom of the box body during rotation, and the elastic member can be reset so that the first guide portion is engaged in the second guide groove, and the second guide portion is engaged in the first guide groove.

4. The luggage case according to claim 1, characterized in that: The luggage case further includes a first push rod and a second push rod, wherein the first push rod is connected to one of the first connecting members, and the second push rod is connected to another one of the first connecting members.

5. The luggage case according to claim 4, characterized in that: One end of the first push rod away from the corresponding first connecting member is connected to the second push rod.

6. The luggage case according to claim 1, characterized in that: The climbing wheel assembly includes a connecting rod, a triangular bracket and a plurality of climbing wheels, one end of the connecting rod is connected to the side wall of the corresponding second connecting member, the other end of the connecting rod is rotatably connected to the center of the triangular bracket, and each of the climbing wheels is rotatably connected to each top end of the triangular bracket.

7. The luggage case according to claim 6, characterized in that: The stair climbing wheel assembly also includes a support arm, one end of which is connected to the connecting rod, and the other end of the support arm is rotatably connected to the center of the triangular bracket, and the length direction of the support arm is consistent with the radial direction of the stair climbing wheel.

8. The luggage case according to any one of claims 1 to 7, characterized in that: The elastic member includes a spring.

9. The luggage case according to claim 1, characterized in that: The box body also includes a mounting cover, and the mounting surface includes a first mounting surface and a second mounting surface, the first mounting surface is close to the top of the box body, and the second mounting surface is close to the bottom of the box body, the pull rod is arranged on the first mounting surface, and the two adjustment components are both arranged on the second mounting surface; the mounting cover is connected to the first mounting surface on one side away from the bottom of the box body, and an mounting cavity is formed between the mounting cover and the second mounting surface, and when the climbing wheel assembly is in the storage position, the climbing wheel assembly can be completely located in the mounting cavity.

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