Steering structure for luggage case

Abstract

The utility model relates to the technical field of luggage cases, in particular to a steering structure for a luggage case, which comprises a case base, a connecting hole is formed in the case base, and a connecting cylinder rotationally connected with the connecting hole is arranged at the top of a steering support wheel; a steering groove is formed in the box base, a steering arm is arranged in the steering groove, end swing arms are installed at the two ends of the steering arm respectively, and the end swing arms are connected with connecting cylinders at the tops of the steering supporting wheels; the steering groove is provided with a steering shaft along the way, the steering shaft is sleeved with a middle swing arm, and the swing arm is rotationally connected with the steering arm; when the steering shaft rotates, the middle swing arm can be driven to swing left and right, the steering arm movably arranged in the steering groove can move in the length direction of the steering groove, the end swing arms at the two ends of the steering arm can drive the corresponding steering supporting wheels to swing synchronously, and therefore the rotating effect is achieved. According to the scheme, the steering structure does not affect the supporting load of the wheels, and the steering arm can still stably control the moving direction of the box base during steering.

Description

TECHNICAL FIELD

[0001] The utility model relates to a luggage bag technical field especially relates to a steering structure for luggage. BACKGROUND

[0002] The bottom of the luggage has four universal wheels, the user pulls the luggage through the drawbar, makes the rear two universal wheels of the luggage hang in the air, the front two universal wheels of the luggage roll, thereby making the luggage move with the user.

[0003] However, when the luggage is more, the heavier luggage causes the heavier burden to the user, if four universal wheels roll on the ground, although the burden of the user can be reduced, but the moving direction of the luggage is difficult to control. INVENTION CONTENTS

[0004] The utility model aims at providing a steering structure for luggage in view of the prior art.

[0005] In order to realize the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0006] A steering structure for luggage, comprising a suitcase base installed on the bottom of the luggage, the suitcase base is installed with a pair of steering support wheels and a pair of auxiliary support wheels.

[0007] The suitcase base is formed with a connecting hole, and the top of the steering support wheel is provided with a connecting barrel rotatably connected with the connecting hole; the suitcase base is formed with a steering groove, and the steering groove is provided with a steering arm capable of moving along the length direction of the steering groove, and the two ends of the steering arm are respectively installed with end swing arms, and the end swing arms are connected with the connecting barrels on the top of the steering support wheels; the steering groove is provided with a steering shaft along the way, the steering shaft is sleeved with an intermediate swing arm, and the swing arm is rotatably connected with the steering arm.

[0008] Further, the intermediate swing arm is connected to the middle end of the steering arm, the middle end of the steering arm is formed with an adapter hole, one end of the intermediate swing arm is formed with a circular block rotatably connected with the adapter hole, and the other end of the intermediate swing arm is formed with a first sleeve hole sleeved on the steering shaft.

[0009] Further, the cross-sectional shape of the steering shaft is matched with the cross-sectional shape of the first sleeve hole.

[0010] Further, a concave rotating groove is arranged beside the steering groove, and a rotating sleeve is sleeved on the bottom end of the steering shaft, and the rotating sleeve is rotatably installed in the rotating groove.

[0011] Further, the end swing arm is formed with a first movable block rotatably connected with the steering arm and a second sleeve hole connected with the connecting barrel, and the cross-sectional shape of the second sleeve hole is matched with the shape of the first sleeve hole.

[0012] Further, the cross-sectional shape of the connecting cylinder is matched with the cross-sectional shape of the steering shaft.

[0013] Further, the connecting cylinder and the steering shaft are both circular column base bodies, and the peripheral wall of the base body has one or more flat portions.

[0014] Further, the top of the connecting cylinder and the top of the steering shaft are both sleeved with top rolling bearings.

[0015] Further, the top of the steering support wheel is provided with a connecting seat, the connecting seat is formed with a plug-in slot for inserting the connecting cylinder, and the cross-sectional shape of the plug-in slot is matched with the cross-sectional shape of the connecting cylinder.

[0016] Further, the rotating groove and the connecting holes on both sides are transversely aligned with each other.

[0017] The beneficial effects of the utility model are as follows: when the steering shaft rotates, the intermediate swing arm swings left and right, the steering arm movably arranged in the steering groove moves along the length direction of the steering groove, and the end swing arm at both ends of the steering arm drives the corresponding steering support wheel to swing synchronously, so that the rotating effect is realized; since the steering support wheel and the auxiliary support wheel both have a supporting effect on the box base, the steering structure of the present scheme does not affect the supporting load of the wheel, and when steering, the steering support wheel can still steer smoothly and stably, and the moving direction of the control box base is controlled stably. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of the steering structure connected with the box base.

[0019] Figure 2 It is a schematic view of the steering structure.

[0020] Figure 3 It is a structural schematic view of the intermediate swing arm connected with the steering arm.

[0021] Figure 4 It is a schematic view of the steering support wheel connected with the steering structure.

[0022] The reference signs include:

[0023] 1 - box base,

[0024] 11 - steering mechanism, 12 - steering groove, 13 - steering arm, 14 - end swing arm,

[0025] 15 - intermediate swing arm, 16 - adapter hole, 17 - circular block, 18 - first movable block,

[0026] 2 - steering shaft,

[0027] 21 - rotating groove, 22 - rotating sleeve, 23 - first sleeve hole, 24 - base body, 25 - flat portion,

[0028] 26-Top rolling bearing,

[0029] 3-Connecting cylinder

[0030] 31-Connecting hole, 32-Second socket hole, 33-Connecting seat, 34-Insertion slot, 35-Steering support wheel

[0031] 36 - Auxiliary support wheel. Detailed Implementation

[0032] The present invention will now be described in detail with reference to the accompanying drawings.

[0033] like Figures 1-4 As shown, a steering structure for a suitcase includes a suitcase base 1 installed at the bottom of the suitcase. The suitcase base 1 is equipped with a pair of steering support wheels 35 and a pair of auxiliary support wheels 36. The suitcase base 1 has a connecting hole 31 formed therein. The top of the steering support wheel 35 is provided with a connecting cylinder 3 that is rotatably connected to the connecting hole 31. The steering support wheel 35 is rotatably connected to the connecting hole 31 through the connecting cylinder 3, so that the steering support wheel 35 can rotate laterally in the connecting hole 31 to achieve steering.

[0034] A steering groove 12 is formed inside the box base 1, and a steering mechanism 11 is provided inside the steering groove 12. The steering mechanism 11 includes a steering arm 13 that can move along the length direction of the steering groove 12. End swing arms 14 are respectively installed at both ends of the steering arm 13, and the end swing arms 14 are connected to the connecting cylinder 3 at the top of the steering support wheel 35. A steering shaft 2 is provided along the steering groove 12, and a middle swing arm 15 is sleeved on the steering shaft 2. The swing arm 15 is rotatably connected to the steering arm 13. When the steering shaft 2 rotates, it will drive the middle swing arm 15 to swing left and right. The steering arm 13, which is movably set in the steering groove 12, will move along the length direction of the steering groove 12. The end swing arms 14 at both ends of the steering arm 13 will drive the corresponding steering support wheel 35 to swing synchronously, thereby achieving the rotation effect. Since both the steering support wheel 35 and the auxiliary support wheel 36 have a supporting effect on the box base 1, the steering structure of this solution will not affect the supporting load of the wheel. When turning, the steering support wheel 35 can still turn smoothly and stably, and control the movement direction of the box base 1 stably.

[0035] Specifically, the intermediate swing arm 15 is connected to the middle end of the steering arm 13. The middle end of the steering arm 13 is formed with a transition hole 16. One end of the intermediate swing arm 15 is formed with a circular block 17 that is rotatably connected to the transition hole 16. The intermediate swing arm 15 is rotatably connected to the transition hole 16 of the steering arm 13 through the circular block 17. When the intermediate swing arm 15 swings left and right, the steering arm 13 can move left and right, thereby controlling the steering.

[0036] Further, the steering groove 12 is provided with an inner concave rotating groove 21 beside, the bottom end of the steering shaft 2 is sleeved with a rotating sleeve 22, and the rotating sleeve 22 is rotatably installed in the rotating groove 21; the bottom of the steering shaft 2 is rotatably installed in the rotating groove 21 through the cooperation of the rotating sleeve 22, and the steering control of the steering support wheel 35 is realized.

[0037] Further, the other end of the intermediate swing arm 15 is formed with a first sleeve hole 23 sleeved on the steering shaft 2. The cross-sectional shape of the steering shaft 2 is matched with the cross-sectional shape of the first sleeve hole 23. The connecting barrel 3 is a circular column base body 24, and the peripheral wall of the base body 24 has one or more straight portions 25. Therefore, when the steering shaft 2 rotates, the intermediate swing arm 15 sleeved on the steering shaft 2 through the first sleeve hole 23 can correspondingly swing left and right to control the left and right movement of the steering arm 13.

[0038] Specifically, the end swing arm 14 is formed with a first movable block 18 rotatably connected with the steering arm 13 and a second sleeve hole 32 connected with the connecting barrel 3, and the cross-sectional shape of the second sleeve hole 32 is matched with the shape of the first sleeve hole 23; the cross-sectional shape of the connecting barrel 3 is matched with the cross-sectional shape of the steering shaft 2. The structure of the end swing arm 14 is basically the same as that of the intermediate swing arm 15, and the length is also the same. The rotating groove 21 and the connecting holes 31 on both sides are transversely aligned with each other, so that the end swing arm 14 and the intermediate swing arm 15 are parallel to each other, and the parallel quadrilateral structure is formed by cooperating with the steering arm 13. When the intermediate swing arm 15 swings left and right, the steering arm 13 can move left and right, and the end swing arm 14 can drive the connecting barrel 3 to rotate in the connecting hole 31 to realize the steering control of the steering support wheel 35.

[0039] Specifically, the connecting barrel 3 is a circular column base body 24, and the peripheral wall of the base body 24 has one or more straight portions 25. Therefore, when the end swing arm 14 swings around the end of the steering arm 13, the structure of the connecting barrel 3 sleeved on the connecting barrel 3 through the second sleeve hole 32 can control the rotation of the connecting barrel 3 to control the rotation of the steering support wheel 35.

[0040] The top of the connecting barrel 3 and the top of the steering shaft 2 are both sleeved with a top rolling bearing 26. The steering shaft 2 can be positioned by the top rolling bearing 26 and rotate in the top rolling bearing 26, so as to ensure the rotation stability of the connecting barrel 3 and the steering shaft 2.

[0041] Further, the connecting seat 33 is installed on the top of the steering support wheel 35, the connecting seat 33 is formed with a plug-in groove 34 for inserting the connecting barrel 3, the cross-sectional shape of the plug-in groove 34 is matched with the cross-sectional shape of the connecting barrel 3, and after the connecting barrel 3 is inserted between the plug-in groove 34 and the steering support wheel 35, when the connecting barrel 3 rotates, the steering support wheel 35 correspondingly rotates to realize steering.

[0042] In conclusion, the utility model has the excellent characteristics as mentioned above, and can improve the performance of the prior art and has practicality, and becomes a product with high practical value.

[0043] The above is only the preferred embodiment of the utility model, and for the ordinary skilled in the art, according to the idea of the utility model, the specific implementation mode and application range can be changed, and the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A steering structure for a luggage case, comprising a case base mounted on the bottom of the luggage case, the case base being provided with a pair of steering support wheels and a pair of auxiliary support wheels, characterized in that: the case base is formed with a connecting hole, and the top of the steering support wheel is provided with a connecting cylinder rotatably connected with the connecting hole; the case base is formed with a steering groove, the steering groove is provided with a steering arm capable of moving along the length direction of the steering groove, and the steering arm is provided with an end swing arm at each end thereof, the end swing arm being connected with the connecting cylinder at the top of the steering support wheel; the steering groove is provided with a steering shaft along the way, the steering shaft is sleeved with an intermediate swing arm, and the swing arm is rotatably connected with the steering arm.

2. The turning structure for a luggage case according to claim 1, wherein: the intermediate swing arm is connected with the middle end of the steering arm, the middle end of the steering arm is formed with an adapter hole, one end of the intermediate swing arm is formed with a circular block rotatably connected with the adapter hole, and the other end of the intermediate swing arm is formed with a first sleeve hole sleeved on the steering shaft.

3. A turning structure for a luggage case as defined in claim 2, wherein: the cross-sectional shape of the steering shaft is matched with the cross-sectional shape of the first sleeve hole.

4. A turning structure for a luggage case according to claim 3, wherein: the steering groove is provided with an inner recessed rotating groove beside the steering groove, and the bottom end of the steering shaft is sleeved with a rotating sleeve rotatably installed in the rotating groove.

5. A turning structure for a luggage case according to claim 4, wherein: the end swing arm is formed with a first movable block rotatably connected with the steering arm and a second sleeve hole connected with the connecting cylinder, and the cross-sectional shape of the second sleeve hole is matched with the shape of the first sleeve hole.

6. A turning structure for a luggage case according to claim 5, wherein: the cross-sectional shape of the connecting cylinder is matched with the cross-sectional shape of the steering shaft.

7. A turning structure for a luggage case according to claim 6, wherein: the connecting cylinder and the steering shaft are both similar to a circular column base body, and the peripheral wall of the base body has one or more flat portions.

8. A turning structure for a luggage case according to claim 7, wherein: the top of the connecting cylinder and the top of the steering shaft are both sleeved with a top rolling bearing.

9. A turning structure for a luggage case according to claim 8, wherein: the top of the connecting cylinder and the top of the steering shaft are both sleeved with a top rolling bearing.

10. The turning structure for a luggage case of claim 4, wherein: the top of the connecting cylinder and the top of the steering shaft are both sleeved with a top rolling bearing. the connecting cylinder and the steering shaft are both similar to a circular column base body, and the peripheral wall of the base body has one or more flat portions. the connecting cylinder and the steering shaft are both similar to a circular column base body, and the peripheral wall of the base body has one or more flat portions. the connecting cylinder and the steering shaft are both similar to a circular column base body, and the peripheral wall of the base body has one or more flat portions.

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