An electrically driven luggage case with lockable casters

Abstract

The utility model discloses a kind of electric suitcases of lockable universal wheel, it includes bearing frame, box and riser, the rear end of bearing frame is equipped with telescopic frame that can be displaced forwards and backwards, box is fixed on telescopic frame, the front end of bearing frame is fixed with front wheel support, riser is rotatably arranged at the middle of front wheel support, two transmission discs rotatable within preset angle are arranged in front wheel support, two transmission discs are synchronously rotated by riser drive, the below of front wheel support is equipped with universal wheel corresponding with transmission disc one by one, universal wheel includes wheel body and wheel shaft, the upper end of wheel shaft is coaxially connected to transmission disc and both rotationally cooperate, locking mechanism is arranged between transmission disc and wheel shaft, locking mechanism includes locking key, locking key is oppositely arranged with the front side wall of box.The utility model can realize the universal and directional automatic conversion of gyro wheel, not only can ride, but also conveniently drag, better meet the application demand.

Description

Technical Field

[0001] This utility model relates to electric suitcases, and more particularly to an electric suitcase with lockable omnidirectional wheels. Background Technology

[0002] Electric suitcases need to meet the functions of electric riding and free dragging. Traditional suitcases usually use a swivel wheel structure, but for electric suitcases, the wheels used to control the direction are required to be fixed wheels. If swivel wheels are used directly, steering will be ineffective. Due to this limitation, the front steering wheels of current electric suitcases do not have swivel function, making them inconvenient for users to drag. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an electric suitcase with lockable omnidirectional wheels that can automatically switch between omnidirectional and directional rotation of the wheels, making it not only rideable but also easy to tow.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution.

[0005] An electric suitcase with lockable omnidirectional wheels includes a support frame, a suitcase body, and a riser. The rear end of the support frame has a telescopic frame that can move forward and backward. The suitcase body is fixed to the telescopic frame. A front wheel bracket is fixed to the front end of the support frame. The riser is rotatably positioned at the middle of the front wheel bracket. The front wheel bracket contains two drive discs that can rotate within a preset angle. The riser drives the two drive discs to rotate synchronously. Below the front wheel bracket are omnidirectional wheels corresponding to the drive discs. Each omnidirectional wheel includes a wheel body and an axle. The upper end of the shaft is coaxially connected to the transmission disc and the two rotate in cooperation. A locking mechanism is provided between the transmission disc and the axle. The locking mechanism includes a locking key, which is disposed opposite to the front side wall of the housing. The locking mechanism is used to: lock the transmission disc and the axle coaxially when the housing moves away from the front wheel bracket, so that the axle and the transmission disc rotate synchronously; and release the coaxial locking relationship between the transmission disc and the axle when the housing approaches the front wheel bracket and the locking key is pressed, so that the axle can rotate freely.

[0006] Preferably, an L-shaped connecting rod is fixed to the front side of the riser, the L-shaped connecting rod is hinged to the middle of a crossbar, and the two ends of the crossbar are respectively hinged to the top of the two transmission discs near the edge.

[0007] Preferably, the bottom of the front wheel bracket is provided with two receiving openings, and the two transmission discs are respectively disposed in the two receiving openings.

[0008] Preferably, the top wall of the receiving port is provided with two symmetrically arranged fan-shaped limiting ports, and the top of the transmission disk is formed with two symmetrically arranged protrusions. The two protrusions are respectively disposed in the two fan-shaped limiting ports, and the fan-shaped limiting ports are used to limit the angular displacement of the protrusions.

[0009] Preferably, the axle has an upwardly protruding shaft at its center, the shaft passing through the transmission disc and the front wheel bracket in sequence, the shaft engaging with the transmission disc, and the shaft rotatably connecting with the front wheel bracket.

[0010] Preferably, the side of the shaft has a cut surface that engages with the transmission disc.

[0011] Preferably, the locking mechanism includes a spring, the bottom surface of the transmission disk has a radially extending upper sliding groove, the locking key is slidably disposed in the upper sliding groove, one end of the locking key passes through the side wall of the transmission disk and extends outward, limiting blocks are formed on both sides of the locking key, limiting step grooves are formed on the inner walls of both sides of the upper sliding groove, the two limiting blocks are slidably disposed in the two limiting step grooves, the side of the wheel axle has an outwardly extending protrusion, the top surface of the protrusion has a radially extending lower sliding groove, the top surface of the wheel axle has an annular groove communicating with the lower sliding groove, the locking key includes a downwardly extending locking block, the locking block can slide in the lower sliding groove and the annular groove, the spring is clamped between the cut surface and the locking key; when the housing moves away from the front wheel bracket, the spring force drives the locking key to slide outward, thereby driving the locking block to slide into the lower sliding groove; when the housing presses the locking key, it drives the locking block to slide into the annular groove.

[0012] Preferably, the locking key has a blind hole at one end facing the cut surface, and one end of the spring is disposed in the blind hole.

[0013] Preferably, the front wheel bracket has a clearance opening on one side facing the housing, and the locking key passes through the clearance opening.

[0014] Preferably, the telescopic frame is equipped with an electric cylinder, which is used to drive the telescopic frame to move back and forth.

[0015] In the electric luggage box with lockable omnidirectional wheels disclosed in this utility model, the support frame serves as the main support, and the telescopic frame can drive the box body to move back and forth relative to the support frame, so as to separate the upright tube from the box body, making it convenient for the user to ride and hold the handle. To facilitate directional control, the upright tube can drive two transmission discs to rotate synchronously. Based on the locking mechanism provided between the transmission disc and the wheel axle, the locking and unlocking functions of the two can be realized. When the user needs to ride the luggage box, the box body is moved away from the front wheel bracket. At this time, the locking mechanism locks the transmission disc and the wheel axle coaxially. The wheel axle can rotate synchronously with the transmission disc, acting as a directional wheel, which facilitates the user's steering control. When the user needs to drag it, the box body is moved forward until the box body presses the locking button to disengage the lock, that is, to release the coaxial locking relationship between the transmission disc and the wheel axle. At this time, the wheel axle can rotate freely, which is convenient for the user to drag. Compared with existing technologies, this invention can realize the automatic conversion of the roller's omnidirectional and directional orientation, making it not only rideable but also convenient to tow, thus better meeting application needs. Attached Figure Description

[0016] Figure 1 A 3D model of an electric suitcase;

[0017] Figure 2 This is a partial exploded view of the electric luggage case;

[0018] Figure 3 This is a structural diagram of the front wheel bracket, drive disc, and casters.

[0019] Figure 4 This is a 3D view of the front wheel bracket;

[0020] Figure 5 An exploded view of the drive disc and casters;

[0021] Figure 6 This is a structural diagram of the transmission disc and locking key;

[0022] Figure 7 This is a structural diagram of the locking key and the universal wheel. Detailed Implementation

[0023] The present invention will now be described in more detail with reference to the accompanying drawings and embodiments.

[0024] This utility model discloses an electric suitcase with lockable omnidirectional wheels, combined with Figures 1 to 7As shown, it includes a support frame 1, a housing 2, and a riser 3. The rear end of the support frame 1 is equipped with a telescopic frame 4 that can move forward and backward. The housing 2 is fixed to the telescopic frame 4. The front end of the support frame 1 is fixed with a front wheel bracket 5. The riser 3 is rotatably positioned in the middle of the front wheel bracket 5. The front wheel bracket 5 contains two drive discs 6 that can rotate within a preset angle. The riser 3 drives the two drive discs 6 to rotate synchronously. Below the front wheel bracket 5 are universal wheels 7 corresponding to the drive discs 6. Each universal wheel 7 includes a wheel body 70 and an axle 71. The upper end of the axle 71 is coaxially connected to the drive disc 6, and the two rotate in cooperation. A locking mechanism is provided between the drive disc 6 and the axle 71. The locking mechanism includes a locking key 80, which is disposed opposite to the front side wall of the housing 2. The locking mechanism is used for:

[0025] When the housing 2 moves away from the front wheel bracket 5, the transmission disc 6 is locked coaxially with the wheel axle 71 so that the wheel axle 71 and the transmission disc 6 rotate synchronously.

[0026] When the housing 2 approaches the front wheel bracket 5 and the locking key 80 is pressed, the coaxial locking relationship between the transmission disc 6 and the wheel axle 71 is released, allowing the wheel axle 71 to rotate freely.

[0027] In the above structure, the support frame 1 serves as the main support, and the telescopic frame 4 can drive the box 2 to move back and forth relative to the support frame 1, so as to separate the upright tube 3 from the box 2, making it convenient for the user to ride and grip the handlebars. To facilitate directional control, the upright tube 3 can drive the two transmission discs 6 to rotate synchronously. Based on the locking mechanism between the transmission disc 6 and the wheel axle 71, the locking and unlocking functions of the two can be realized. When the user needs to ride the luggage box, the box 2 is moved away from the front wheel bracket 5. At this time, the locking mechanism locks the transmission disc 6 and the wheel axle 71 coaxially. The wheel axle 71 can rotate synchronously with the transmission disc 6, acting as a directional wheel, which facilitates the user's steering control. When the user needs to tow, the box 2 is moved forward until the box 2 presses the locking key 80 to engage the lock, that is, to release the coaxial locking relationship between the transmission disc 6 and the wheel axle 71. At this time, the wheel axle 71 can rotate freely, which is convenient for the user to tow. Compared with existing technologies, this invention can realize the automatic conversion of the roller's omnidirectional and directional orientation, making it not only rideable but also convenient to tow, thus better meeting application needs.

[0028] In this embodiment, the riser 3 can drive the two transmission discs 6 to rotate synchronously. For details on how this action is achieved, please refer to [link to documentation]. Figure 3An L-shaped connecting rod 30 is fixed to the front side of the riser 3. The L-shaped connecting rod 30 is hinged to the middle of a crossbar 31. The two ends of the crossbar 31 are respectively hinged to the top of the two transmission discs 6 near the edge. In this embodiment, the hinged relationship between the L-shaped connecting rod 30 and the crossbar 31 effectively achieves the simultaneous application of torque to the left and right wheels.

[0029] To accommodate two drive discs 6, please refer to [reference needed] in this embodiment. Figure 4 The bottom of the front wheel bracket 5 is provided with two receiving ports 50, and the two transmission discs 6 are respectively disposed in the two receiving ports 50.

[0030] In the specific steering control process, the transmission disc 6 only needs to rotate within a certain angle. To achieve the rotation angle limitation, in this embodiment, it is combined with... Figure 4 and Figure 5 As shown, the top wall of the receiving port 50 is provided with two symmetrically arranged fan-shaped limiting ports 51, and the top of the transmission disk 6 is formed with two symmetrically arranged protrusions 60. The two protrusions 60 are respectively disposed in the two fan-shaped limiting ports 51, and the fan-shaped limiting ports 51 are used to limit the angular displacement of the protrusions 60.

[0031] Regarding the specific structure of the omnidirectional wheel 7, in this embodiment, an upwardly protruding shaft 72 is provided at the center of the wheel axle 71. The shaft 72 passes sequentially through the transmission disc 6 and the front wheel bracket 5. The shaft 72 is engaged with the transmission disc 6 and rotatably connected to the front wheel bracket 5. Specifically, the side of the shaft 72 has a cut surface 73 that engages with the transmission disc 6.

[0032] In a preferred embodiment, the locking mechanism includes a spring 81, the bottom surface of the transmission disk 6 has a radially extending upper sliding groove 61, the locking key 80 is slidably disposed in the upper sliding groove 61, one end of the locking key 80 passes through the side wall of the transmission disk 6 and extends outward, limiting blocks 83 are formed on both sides of the locking key 80, limiting step grooves 62 are formed on the inner walls of both sides of the upper sliding groove 61, the two limiting blocks 83 are slidably disposed in the two limiting step grooves 62, the side of the axle 71 has an outwardly extending protrusion 74, the top surface of the protrusion 74 has a radially extending lower sliding groove 75, the top surface of the axle 71 has an annular groove 76 communicating with the lower sliding groove 75, the locking key 80 includes a downwardly extending locking block 82, the locking block 82 can slide in the lower sliding groove 75 and the annular groove 76, and the spring 81 is sandwiched between the cut surface 73 and the locking key 80.

[0033] When the housing 2 moves away from the front wheel bracket 5, the spring force applied by the spring 81 drives the locking key 80 to slide outward, thereby causing the locking block 82 to slide into the sliding groove 75;

[0034] When the housing 2 presses the locking key 80, it causes the locking block 82 to slide into the annular groove 76.

[0035] In the above structure, based on the radial movement of the locking key 80, the locking block 82 can slide between the lower groove 75 and the annular groove 76. When the locking block 82 slides into the lower groove 75, it creates a limiting effect. The locking key 80 simultaneously restricts the axle 71 and the transmission disc 6, causing the axle 71 and the transmission disc 6 to rotate synchronously. In this state, the omnidirectional wheel 7 takes the form of a directional wheel, making it convenient for the user to steer the omnidirectional wheel 7 during riding. Conversely, when the electric luggage box retracts and the box body 2 presses the locking key 80, the locking block 82 slides into the annular groove 76 and can rotate along the annular groove 76. In this state, the omnidirectional wheel 7 regains its free rotation performance, thus facilitating dragging by the user. Based on the above structure, it can be seen that this utility model achieves the locking and unlocking functions of the transmission disc 6 and the omnidirectional wheel 7 based on a simple structure, which well meets the application requirements.

[0036] For better spring accommodation, please refer to the following embodiment: Figures 5 to 7 The locking key 80 has a blind hole 85 at one end facing the cut surface 73, and one end of the spring 81 is located in the blind hole 85. Under the elastic force applied by the spring 81, the locking key 80 generates a tendency force to slide outward. When the locking block 82 is located in the annular groove 76 and the telescopic frame 4 moves the housing 2 away from the front wheel bracket 5, the locking block 82 can be aligned and slid into the sliding groove 75 by slightly adjusting the orientation of the wheel 70.

[0037] To avoid positional interference with the locking key 80, in this embodiment, the front wheel bracket 5 has a clearance opening 52 on the side facing the housing 2, and the locking key 80 passes through the clearance opening 52.

[0038] This embodiment preferably uses an electric telescopic control method. For details, please refer to [link / reference]. Figure 2 The telescopic frame 4 is equipped with an electric cylinder 40, which is used to drive the telescopic frame 4 to move back and forth.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. All modifications, equivalent substitutions or improvements made within the technical scope of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. An electric suitcase with lockable omnidirectional wheels, characterized in that, The device includes a support frame (1), a housing (2), and a riser (3). The rear end of the support frame (1) is equipped with a telescopic frame (4) that can move forward and backward. The housing (2) is fixed on the telescopic frame (4). The front end of the support frame (1) is fixed with a front wheel bracket (5). The riser (3) is rotatably located in the middle of the front wheel bracket (5). The front wheel bracket (5) is equipped with two transmission discs (6) that can rotate within a preset angle. The riser (3) drives the two transmission discs (6) to rotate synchronously. Below the front wheel bracket (5) are universal wheels (7) that correspond one-to-one with the transmission discs (6). Each universal wheel (7) includes a wheel body (70) and a wheel axle (71). The upper end of the wheel axle (71) The transmission disc (6) is coaxially connected to the transmission disc (6) and the two rotate in cooperation. A locking mechanism is provided between the transmission disc (6) and the axle (71). The locking mechanism includes a locking key (80). The locking key (80) is disposed opposite to the front side wall of the housing (2). The locking mechanism is used to: lock the transmission disc (6) and the axle (71) coaxially when the housing (2) is away from the front wheel bracket (5) so that the axle (71) and the transmission disc (6) rotate synchronously; and release the coaxial locking relationship between the transmission disc (6) and the axle (71) when the housing (2) is close to the front wheel bracket (5) and the locking key (80) is pressed so that the axle (71) can rotate freely.

2. The electric suitcase with lockable omnidirectional wheels as described in claim 1, characterized in that, An L-shaped connecting rod (30) is fixed to the front side of the riser (3). The L-shaped connecting rod (30) is hinged to the middle of a crossbar (31). The two ends of the crossbar (31) are respectively hinged to the top of the two transmission discs (6) near the edge.

3. The electric suitcase with lockable omnidirectional wheels as described in claim 1, characterized in that, The bottom of the front wheel bracket (5) is provided with two receiving ports (50), and two transmission discs (6) are respectively located in the two receiving ports (50).

4. The electric suitcase with lockable omnidirectional wheels as described in claim 3, characterized in that, The top wall of the receiving port (50) is provided with two symmetrically arranged fan-shaped limiting ports (51), and the top of the transmission disk (6) is formed with two symmetrically arranged protrusions (60). The two protrusions (60) are respectively arranged in the two fan-shaped limiting ports (51), and the fan-shaped limiting ports (51) are used to limit the angular displacement of the protrusions (60).

5. The electric suitcase with lockable omnidirectional wheels as described in claim 1, characterized in that, The axle (71) has an upwardly protruding shaft (72) at its center. The shaft (72) passes through the transmission disc (6) and the front wheel bracket (5) in sequence. The shaft (72) is engaged with the transmission disc (6) and rotatably connected to the front wheel bracket (5).

6. The electric suitcase with lockable omnidirectional wheels as described in claim 5, characterized in that, The side of the shaft (72) has a cut surface (73) that engages with the transmission disc (6).

7. The electric suitcase with lockable omnidirectional wheels as described in claim 6, characterized in that, The locking mechanism includes a spring (81), and the bottom surface of the transmission disk (6) forms a radially extending upper sliding groove (61). The locking key (80) is slidably disposed in the upper sliding groove (61). One end of the locking key (80) passes through the side wall of the transmission disk (6) and extends outward. Limiting blocks (83) are formed on both sides of the locking key (80). Limiting step grooves (62) are formed on the inner walls of both sides of the upper sliding groove (61). The two limiting blocks (83) are slidably disposed in the two limiting step grooves (62). The side of the wheel axle (71) has an outwardly extending protrusion (74), the top surface of the protrusion (74) has a radially extending downward groove (75), the top surface of the wheel axle (71) has an annular groove (76) communicating with the downward groove (75), the locking key (80) includes a downwardly extending locking block (82), the locking block (82) can slide in the downward groove (75) and the annular groove (76), and the spring (81) is sandwiched between the cut surface (73) and the locking key (80). When the housing (2) moves away from the front wheel bracket (5), the spring force applied by the spring (81) drives the locking key (80) to slide outward, thereby driving the locking block (82) to slide into the sliding groove (75); When the housing (2) presses the locking key (80), it causes the locking block (82) to slide into the annular groove (76).

8. The electric suitcase with lockable omnidirectional wheels as described in claim 7, characterized in that, The locking key (80) has a blind hole (85) at one end facing the cut surface (73), and one end of the spring (81) is located in the blind hole (85).

9. The electric suitcase with lockable omnidirectional wheels as described in claim 7, characterized in that, The front wheel bracket (5) has a clearance opening (52) on the side facing the housing (2), and the locking key (80) passes through the clearance opening (52).

10. The electric suitcase with lockable omnidirectional wheels as described in claim 1, characterized in that, The telescopic frame (4) is equipped with an electric cylinder (40), which is used to drive the telescopic frame (4) to move back and forth.

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