Suitcase with hidden trundles

Abstract

The utility model provides a traveling case with hidden trundles. The traveling case comprises a case body, first trundles, a screw rod, a worm gear, a worm and the like, a handle is slidably connected to the top of the box body, mounting holes are formed in the left side and the right side of the bottom of the box body, a screw rod is rotatably connected between the upper wall and the lower wall of the mounting hole in the right side, a first trundle is in threaded connection with the outer side of the screw rod, a worm gear is arranged above the outer side of the screw rod in a sleeving mode, and a worm is connected to the front side wall of the mounting hole in a penetrating mode and meshed with the worm gear. The front end of the worm is provided with a knob. According to the suitcase, the trundles are unfolded or folded by rotating the knob, so that when the suitcase needs to be placed in a narrow space, the problem of space occupation caused by exposure of the trundles can be effectively reduced, and the suitcase is easier to store and is prevented from being blocked.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of travelling case, especially a travelling case with hidden trundle. BACKGROUND

[0002] Early luggage is made of wood or other heavy materials, with the popularity of air travel, the material of the luggage tends to be more portable hard plastic or cloth. Most models also have a built-in small wheel, which can be easily pulled by a pull rod, and can be easily pushed without effort on flat ground.

[0003] The trundle of the existing travelling case cannot be hidden, when the travelling case needs to be put into a narrow space, if the trundle cannot be hidden, the wheel may occupy additional space due to protruding from the case, resulting in that the case cannot be completely put in or stuck. SUMMARY

[0004] In order to solve the technical defects of the prior art, the purpose of the utility model is to provide a travelling case with hidden trundle, which can effectively reduce the space occupation problem caused by the exposure of the trundle, ensure that the case is easier to store and avoid being stuck.

[0005] A travelling case with hidden trundle, comprising a case body, a first trundle, a screw rod, a worm wheel, a worm gear and a second trundle; the top of the case body is slidably connected with a handle, the bottom of the case body is provided with mounting holes on the left and right sides, a screw rod is rotatably connected between the upper and lower walls of the mounting hole on the right side, the outer side of the screw rod is threadedly connected with the first trundle, the outer side of the screw rod is provided with a worm wheel above, the mounting hole is provided with a worm gear through the front side wall, the worm gear is engaged with the worm wheel, the front end of the worm gear is provided with a knob, and the second trundle is arranged in the mounting hole on the left side.

[0006] In a preferred embodiment of the utility model, a connecting rod is further arranged between the two mounting holes, the left end of the first trundle is provided with a connecting rod, and the left end of the connecting rod is connected with the second trundle.

[0007] In a preferred embodiment of the utility model, a guide rod is further arranged, the top of the first trundle and the second trundle is provided with a guide rod, and the guide rod is connected between the upper and lower walls of the mounting hole.

[0008] In a preferred embodiment of the utility model, a limiting block is further arranged, the outer side above the plurality of guide rods and screw rods is provided with a limiting block.

[0009] In a preferred embodiment of the utility model, a dustproof plate, a sliding rail and an elastic lug are further arranged, the bottom of the mounting hole is provided with a sliding rail, the dustproof plate is slidably connected in the sliding rail, the dustproof plate is provided with a groove, the sliding rail is provided with an elastic lug, and the elastic lug and the groove are matched.

[0010] In a preferred embodiment of this utility model, there are three sets of elastic protrusions, and the distance between each set corresponds to the distance between the grooves on the dustproof plate.

[0011] In a preferred embodiment of this invention, the surface of the knob is provided with a fluorescent coating.

[0012] In a preferred embodiment of this utility model, the dustproof plate is made of a transparent material.

[0013] In a preferred embodiment of this utility model, the inner side of the handle is provided with a soft material.

[0014] In a preferred embodiment of this utility model, finger grooves are provided on both sides of the dustproof plate.

[0015] Compared with the prior art, the present invention has the following advantages: The present invention can release or retract the casters by rotating the knob, which can effectively reduce the space occupation problem caused by exposed casters when the suitcase needs to be put into a narrow space, ensuring that the suitcase is easier to store and avoids getting stuck. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a cross-sectional view of the housing of this utility model.

[0018] Figure 3 This is a schematic diagram of the structure of the first and second casters of this utility model.

[0019] Figure 4 This is an enlarged view of the screw, worm gear, and worm of this utility model.

[0020] Figure 5 This is a cross-sectional view of the bottom of this utility model.

[0021] Figure 6 This is a cross-sectional view of the bottom of this utility model after the dustproof plate is hidden.

[0022] Figure 7 This is an enlarged view of the slide rail and elastic protrusion of this utility model.

[0023] Figure 8 This is a cross-sectional view of the dustproof plate of this utility model.

[0024] The above-mentioned attached drawings include the following reference numerals: 1. Box body, 2. Handle, 3. First caster, 31. Screw, 32. Worm gear, 33. Worm, 4. Connecting rod, 5. Second caster, 6. Guide rod, 7. Limiting block, 8. Knob, 9. Dustproof plate, 10. Groove, 11. Slide rail, 12. Elastic protrusion, 13. Connecting groove. Detailed Implementation

[0025] The present invention will now be described with reference to the accompanying drawings.

[0026] A type of suitcase with concealed casters, such as Figures 1-8 As shown, the device includes a housing 1, a first caster 3, a screw 31, a worm gear 32, a worm 33, and a second caster 5. A handle 2 is slidably connected to the top of the housing 1. The inner side of the handle 2 is lined with a soft material to increase the comfort of the user when pulling the handle 2. Mounting holes are provided on both the left and right sides of the bottom of the housing 1. A screw 31 is rotatably connected between the upper and lower walls of the mounting hole on the right side. The first caster 3 is threadedly connected to the outer side of the screw 31. A worm gear 32 is fitted on the upper outer side of the screw 31. A worm 33 is connected through the front wall of the mounting hole. The worm 33 meshes with the worm gear 32. A knob 8 is provided at the front end of the worm 33. The surface of the knob 8 is coated with a fluorescent coating to improve the visibility of the knob 8 under low light conditions and facilitate user operation. A second caster 5 is provided in the mounting hole on the left side.

[0027] As a further improved technical solution, this utility model may also include the following additional technical features: it also includes a connecting rod 4, a connecting groove 13 is opened between the two mounting holes, the left end of the first caster 3 is provided with the connecting rod 4, the left end of the connecting rod 4 is connected to the second caster 5, and the extension and retraction of the first caster 3 and the second caster 5 can be driven synchronously through the connecting rod 4.

[0028] As a further improved technical solution, the present invention may also include the following additional technical features: it also includes a guide rod 6, and the top of the first caster 3 and the second caster 5 are both provided with a guide rod 6. The guide rod 6 is connected between the upper and lower walls of the mounting hole. The guide rod 6 can provide guidance and support for the telescopic movement of the first caster 3 and the second caster 5, ensuring that the first caster 3 and the second caster 5 run smoothly.

[0029] As a further improved technical solution, the present invention may also include the following additional technical features: it also includes a limiting block 7, and a limiting block 7 is sleeved on the outer side of the upper part of several guide rods 6 and screws 31. The limiting block 7 can restrict the movement of the first caster 3 and the second caster 5 and prevent the first caster 3 and the second caster 5 from moving excessively.

[0030] As a further improved technical solution, this utility model may also include the following additional technical features: it further includes a dustproof plate 9, a slide rail 11, and an elastic protrusion 12. The slide rail 11 is provided at the bottom of the mounting hole, and the dustproof plate 9 is slidably connected inside the slide rail 11. The dustproof plate 9 is made of transparent material to facilitate user observation of the inside of the mounting hole. Finger grooves are provided on both sides of the dustproof plate 9 to facilitate user sliding of the dustproof plate 9. A groove 10 is provided on the dustproof plate 9. An elastic protrusion 12 is provided inside the slide rail 11. The elastic protrusion 12 and the groove 10 fit together. When the caster is retracted, the dustproof plate 9 can be moved along the slide rail 11 to the bottom of the mounting hole by moving the dustproof plate 9. When the groove 10 on the dust cover plate 9 moves to the elastic protrusion 12 on the slide rail 11, the elastic protrusion 12 returns to its original shape and gets into the groove 10 to fix the dust cover plate 9. When it is necessary to release the caster, push the dust cover plate 9 to make the elastic protrusion 12 deform under pressure and disengage from the groove 10. Then move the dust cover plate 9 in the opposite direction along the slide rail 11 to expose the mounting hole. There are three sets of elastic protrusions 12, and the distance between each set corresponds to the distance between the grooves 10 on the dust cover plate 9. After the dust cover plate 9 is moved out from the two sets of elastic protrusions 12 on the left and middle, it can be fixed on the two sets of elastic protrusions 12 on the middle and right by moving a certain distance. The user can switch the dust cover plate 9 between the two positions with just one movement, simplifying the operation process.

[0031] When the casters need to be extended, turn knob 8. Knob 8 drives worm gear 33 to rotate, which in turn drives worm wheel 32 to rotate, thereby driving screw 31 to rotate. During rotation, the first caster 3 moves downward along screw 31 and extends out of housing 1. Connecting rod 4 simultaneously drives the second caster 5 to extend. When the casters need to be retracted, turn knob 8 in the opposite direction. Screw 31 rotates in the opposite direction. The first caster 3 moves upward along screw 31 and retracts into the mounting hole. The two casters retract simultaneously through connecting rod 4 and are hidden at the bottom of housing 1.

[0032] Although the present invention has been described with reference to exemplary embodiments, it should be understood that the present invention is not limited to the disclosed exemplary embodiments. The scope of the following claims should be given the broadest interpretation in order to cover all variations and equivalent structures and functions.

Claims

1. A travel case having a hidden caster, characterized by, The utility model relates to a kind of travel suitcase with hidden trundle, including: Box (1), the top of the box (1) is slidably connected with handle (2), the bottom of the box (1) is respectively provided with mounting hole in left and right sides; First trundle (3), the first trundle (3) is arranged in the mounting hole in right side, the first trundle (3) is threadedly connected with screw rod (31), the screw rod (31) is rotatably connected between the upper and lower walls of the mounting hole; Worm wheel (32), the worm wheel (32) is set on the outside of the screw rod (31) above, the worm wheel (32) is engaged with worm (33); Worm (33), the worm (33) is connected to the front side wall of the mounting hole in a penetrating manner, the front end of the worm (33) is provided with knob (8); Second trundle (5), the second trundle (5) is arranged in the mounting hole in left side.

2. The luggage case having a hidden caster according to claim 1, wherein Further including: Connecting rod (4), connecting slot (13) is opened between two mounting holes, the left end of the first trundle (3) is provided with connecting rod (4), and the left end of the connecting rod (4) is connected with the second trundle (5).

3. A travel case having a hidden caster according to claim 2, wherein Further including: Guide rod (6), the top of the first trundle (3) and the second trundle (5) is equipped with guide rod (6), and the guide rod (6) is connected between the upper and lower walls of the mounting hole.

4. The luggage case having a hidden caster in accordance with claim 3, wherein, Further including: Limiting block (7), the upper outside of the plurality of guide rods (6) and screw rods (31) is all set with limiting block (7).

5. The luggage case having a hidden caster in accordance with claim 4, wherein, Further including: Dustproof plate (9), slide rail (11) and elastic lug (12), the bottom of the mounting hole is provided with slide rail (11), the dustproof plate (9) is slidably connected in the slide rail (11), the dustproof plate (9) is provided with recess (10), the slide rail (11) is provided with elastic lug (12), and the elastic lug (12) is matched with the recess (10).

6. The travel suitcase with hidden trundle according to claim 5, wherein: The elastic lug (12) has three groups, and the distance between each group corresponds to the distance of the recess (10) on the dustproof plate (9).

7. The travel suitcase with hidden trundle according to claim 6, wherein: The surface of the knob (8) is provided with fluorescent coating.

8. The travel suitcase with hidden trundle according to claim 7, wherein: The dustproof plate (9) is made of transparent material.

9. The travel suitcase with hidden trundle according to claim 8, wherein: The inside of the handle (2) is provided with soft material.

10. The travel suitcase with hidden trundle according to claim 9, wherein: The dustproof plate (9) is provided with finger slot on both sides.

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