Frame folding structure capable of sitting on draw-bar box

Abstract

The utility model belongs to the technical field of a frame folding structure of a seated draw-bar box, and particularly relates to a frame folding structure of a seated draw-bar box, a frame comprises a main bracket and an auxiliary bracket which are hinged with each other, and the main bracket and the auxiliary bracket are both provided with wheels; a handle rod is arranged on the main bracket; a mounting base is fixedly arranged on the main support, connecting bases are arranged on the two sides of the auxiliary support, and the two connecting bases are rotationally connected to the two sides of the mounting base respectively; a transverse pin is arranged on the mounting seat, an arc-shaped groove is formed in the side edge of the connecting seat, limiting grooves are formed in the two ends of the arc-shaped groove, and the two ends of the transverse pin are limited in the corresponding arc-shaped groove or the limiting grooves; comprising a pushing piece which is connected with the transverse pin, an elastic piece provides force for the transverse pin to enter the limiting groove, the transverse pin is located in the limiting groove, and the frame is kept in an unfolded or folded state. When external force is applied, the pushing piece drives the transverse pin to break away from the limiting groove and enter the arc-shaped groove, and then the frame can be folded. The utility model provides a frame folding structure on which a draw-bar box can be seated.

Description

Technical Field

[0001] The utility model belongs to the technical field of a frame folding structure of a trolley case, in particular to a frame folding structure of a trolley case. Background Art

[0002] In order to make it easier for parents to take their kids out, suitcase trolleys have appeared on the market. A detachable suitcase is set on the frame, and clothes and other items can be placed in the suitcase. When the frame is unfolded, the child can sit on the seat of the frame, and when the frame is folded, the whole can be used as an ordinary suitcase. As a user, you are particularly concerned about the stability of the frame and the convenience of folding.

[0003] For example, Chinese patent CN202020469715.2, a multifunctional sit-down trolley case. A rotating bracket assembly is provided on the seat plate, and the rotating bracket assembly includes a pin, a turntable and a gear arranged in the seat plate, and the pin is tightly connected to the pin in the seat plate; by pressing, the turntable is rotated through the pin, so that the concave bevel on the turntable squeezes the convex bevel of the gear, so that the gear moves to the side away from the seat plate, the gear is disengaged from the seat plate, and all the gears enter the seat plate connection part, and the rotating support frame assembly can be rotated to close or open; after releasing, the gear is reset under the action of the reset spring. This patent uses movable gears to achieve locking and separation. The structure is highly stable, but there are also certain shortcomings: a. The user needs to press it all the time to fold the frame, and the frame can be released after reaching the specified position. b. The precision of gear meshing is high and it needs to be made of wear-resistant materials, which has high production costs. In addition, there must be gaps in gear meshing, and the frame is unstable. Summary of the invention

[0004] The utility model aims to provide a frame folding structure of a trolley case which has a stable structure and is easy to operate.

[0005] The purpose of the utility model is achieved in this way:

[0006] A frame folding structure of a trolley case, the frame comprising a main support and an auxiliary support hinged to each other, both of which are provided with wheels; a handle bar is provided on the main support; a mounting seat is fixedly provided on the main support, connecting seats are fixedly provided on both sides of the auxiliary support, and the two connecting seats are rotatably connected to both sides of the mounting seat respectively;

[0007] The mounting seat is provided with a transverse pin, the side of the connecting seat is provided with an arc groove, both ends of the arc groove are provided with limiting grooves, and both ends of the transverse pin are limited in the corresponding arc groove or limiting groove;

[0008] It includes a pushing member, which is connected to a transverse pin. An elastic member acts on the pushing member or the transverse pin. The elastic member gives a force to the transverse pin to enter a limiting groove. The transverse pin is located in the limiting groove, and the frame remains in an unfolded or folded state. When an external force is applied, the pushing member drives the transverse pin to leave the limiting groove and enter the arc groove, and the frame can be folded.

[0009] The mounting seat is provided with a longitudinal slot, and the transverse pin moves along the longitudinal slot.

[0010] The transverse pin passes through the pusher or is fixed to the pusher through a fastener; the mounting seat has an inner recess, the pusher and the elastic member are arranged in the inner recess; the pusher moves along the side of the inner recess.

[0011] The connecting seat is provided with at least one protrusion, and the side surface of the mounting seat is provided with an arc segment matching with the protrusion; the protrusion is always located in the arc segment.

[0012] A rotating shaft is fixed or integrally formed on the mounting seat, and both ends of the rotating shaft extend into corresponding connecting seats; the transverse pin is a metal rod.

[0013] The seat is integrally formed on the mounting seat.

[0014] It comprises a fixing block, on which a convex column is arranged, the fixing block is fixed on the mounting seat through a fastener, and the convex column passes through holes on the sides of the mounting seat and the main bracket in sequence to fix the mounting seat and the main bracket.

[0015] The fixing block is fixed in the inner gap between the mounting seat and the connecting seat.

[0016] The fixing blocks are arranged on both sides of the mounting seat, and the two fixing blocks fix the two sides of the main bracket respectively.

[0017] At least two bosses are integrally formed on the fixing block; a positioning block is provided on the main bracket, and when the mounting seat abuts against the positioning block, the holes of the mounting seat match the holes of the main bracket, and the bosses can pass through the holes of the mounting seat and the holes of the main bracket in turn.

[0018] Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:

[0019] 1. The utility model is easy to operate: the user presses the push piece, the transverse pin is separated from the limit groove and enters the arc groove, the user swings the auxiliary bracket to unfold or fold, and the user does not need to press the push piece during the folding process; after unfolding or folding in place, the transverse pin will automatically extend into the corresponding limit groove under the action of the elastic member. The user only needs to press and pull to complete the unfolding or folding.

[0020] 2. The mounting seat of the utility model is provided with a longitudinal notch, and the transverse pin moves along the longitudinal notch. Since the transverse pin is a relatively long component and is subjected to force at both ends, the movement stability of the component is particularly important. Therefore, the position of the transverse pin is maintained by the longitudinal notch, and the transverse pin only moves along the longitudinal notch. Preferably, the transverse pin is made of a metal rod, but it can also be made of other materials with high strength.

[0021] 3. The connection seat of the utility model is provided with at least one protrusion, and the side of the mounting seat is provided with an arc segment that cooperates with the protrusion; the protrusion is always located in the arc segment. Through the cooperation of the protrusion and the arc segment, the connection between the mounting seat and the connection seat is always limited, ensuring the rotation stability between the two.

[0022] 4. The fixing method between the mounting base and the main bracket of the utility model is convenient: the worker first pushes the main bracket to the designated position, then sequentially passes the protruding column of the fixing block through the holes on the side of the mounting base and the main bracket, and then fixes the fixing block to the mounting base through fasteners, thereby fixing the mounting base and the main bracket. The worker's operation is simple, and the two fixing blocks are fixed at the same time, ensuring the stability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is one of the structural schematic diagrams of the vehicle frame of the utility model in the unfolded state;

[0024] Figure 2 This is the second structural schematic diagram of the vehicle frame of the utility model in the unfolded state;

[0025] Figure 3 It is a schematic diagram of the internal structure of the frame of the utility model in an unfolded state;

[0026] Figure 4 yes Figure 3 A schematic diagram of the enlarged structure at point A;

[0027] Figure 5 It is one of the explosion structure schematic diagrams of the utility model;

[0028] Figure 6 yes Figure 5 A schematic diagram of the structure at E of FIG.

[0029] Figure 7 This is the second schematic diagram of the explosion structure of the utility model;

[0030] Figure 8 yes Figure 7 A schematic diagram of the enlarged structure at B;

[0031] Fig. 9 yes Figure 7 A schematic diagram of the enlarged structure at C;

[0032] Fig.10 It is a structural schematic diagram of the frame of the utility model in a folded state;

[0033] Fig.11 It is a schematic diagram of the internal structure of the frame of the utility model in a folded state;

[0034] Fig.12 yes Fig.11 It is a schematic diagram of the enlarged structure at D;

[0035] Fig.13 This is one of the use state diagrams of the utility model;

[0036] Fig.14 This is the second usage state diagram of the utility model.

[0037] In the figure: 1-frame; 11-main bracket; 111-main bracket hole; 112-positioning block; 12-auxiliary bracket; 13-handle bar; 14-seat; 19-wheel; 2-mounting seat; 21-inner recess; 22-longitudinal notch; 23-rotating shaft; 24-mounting seat hole; 25-arc section; 3-connecting seat; 30-rotating shaft hole; 31-arc groove; 32-limiting groove; 33-protrusion; 39-cover; 4-pushing member; 5-transverse pin; 6-fixing block; 61-convex column; 8-spring; 9-luggage box. DETAILED DESCRIPTION

[0038] The present invention will be further described below with reference to the accompanying drawings. Figure 1-14 As shown:

[0039] A folding frame structure for a suitcase, wherein the frame 1 comprises a main support 11 and an auxiliary support 12 which are hinged to each other, and the main support 11 and the auxiliary support 12 are both provided with wheels 19. Fig.13 and Fig.14 As shown, a luggage case 9 can be installed on the vehicle frame 1. The installation of the luggage case 9 is not the key point of the present invention and is not described in detail. Any luggage case installation method on the market can be used. A handle bar 13 is provided on the main bracket 11; a mounting seat 2 is fixedly provided on the main bracket 11, and connecting seats 3 are fixedly provided on both sides of the auxiliary bracket 12. The two connecting seats 3 are rotatably connected to the two sides of the mounting seat 2 respectively;

[0040] The mounting seat 2 is provided with a transverse pin 5, and the side of the connecting seat 3 is provided with an arc groove 31, and the two ends of the arc groove 31 are provided with a limiting groove 32, and the two ends of the transverse pin 5 are limited in the corresponding arc groove 31 or the limiting groove 32; it includes a pusher 4, the pusher 4 is connected to the transverse pin 5, and the elastic member acts on the pusher 4 or the transverse pin 5, and the elastic member gives the transverse pin 5 a force to enter the limiting groove 32, and the transverse pin 5 is located in the limiting groove 32, and the frame remains in the unfolded or folded state; applying an external force, the pusher 4 drives the transverse pin 5 to disengage from the limiting groove 32 and enter the arc groove 31, and the frame can be folded. As a user, you only need to press the pusher 4 first, and then pull the auxiliary bracket 12 to realize the unfolding and folding of the frame. In addition, during the unfolding and folding process, the user does not need to press the transverse pin in the arc groove, that is, you only need to press it at the beginning of folding or unfolding. After the frame is unfolded or folded into place, the transverse pin will automatically enter the corresponding limiting groove under the action of the elastic member.

[0041] The mounting seat 2 is provided with a longitudinal slot 22, and the transverse pin 5 moves along the longitudinal slot 22. The transverse pin 5 is held in position by the longitudinal slot 22, so that the transverse pin 5 can move stably.

[0042] The transverse pin 5 passes through the pusher 4 or is fixed to the pusher 4 by a fastener. The transverse pin only needs to be connected to the pusher, and both direct and indirect fixing methods are acceptable. The mounting seat 2 has an inner recess 21, and the pusher 4 and the elastic member are arranged in the inner recess 21; the pusher 4 moves along the side of the inner recess 21. The pusher 4 and the elastic member are limited by the inner recess 21, so that the assembly is more stable. The elastic member is preferably a spring, an elastic soft rubber or other components.

[0043] At least one protrusion 33 is provided on the connecting seat 3, and an arc segment 25 cooperating with the protrusion 33 is provided on the side of the mounting seat 2; the protrusion 33 is always located in the arc segment 25, and the arc segment is a side avoidance space of the mounting seat, and preferably two protrusions 33 are provided. This structure makes the connection between the connecting seat 3 and the mounting seat 2 more stable. As a manufacturer, this structure can be used as the main support for rotation to reduce the load on the transverse pin; of course, this structure can also be used as an auxiliary support to reduce the load on the transverse pin.

[0044] A rotating shaft 23 is fixed or integrally formed on the mounting seat 2, and both ends of the rotating shaft 23 extend into the corresponding rotating shaft holes 30 of the connecting seat; the rotating shaft 23 is used for positioning, so that the connection between the two is more stable. Bolts can also be set at the rotating shaft position between the mounting seat 2 and the connecting seat 3 to fix them, so as to prevent the connecting seat 3 from detaching from the mounting seat 2, and the position where the bolts pass is covered by a cover 39; bolts can also be not set for anti-detachment fixation, and the connecting seats at both ends of the auxiliary bracket cannot move to the sides, and the rotation connection between the connecting seat and the mounting seat itself is relatively stable.

[0045] The seat 14 is integrally formed on the mounting seat.

[0046] In the early days of the products sold on the market, the mounting base and the main bracket needed to be fixed by rivets, which required additional equipment and special fixtures, and there were certain defective products, and the assembly cost was high. The present application provides an independent component-fixing block 6, on which a boss 61 is provided. The fixing block 6 is fixed to the mounting base by fasteners, and the fasteners can be bolts, screws and other components. The boss 61 passes through the mounting base hole 24 and the main bracket hole 111 in turn to fix the mounting base 2 and the main bracket 11. Just install the fixing block 6 at the specified position.

[0047] The fixing block 6 is fixed in the internal gap between the mounting base 2 and the connecting base 3. The built-in hidden fixing block 6 protects the fixing block 6, and the core components will not be damaged by direct impact of external force, thereby ensuring the stability of the structure.

[0048] The fixing blocks 6 are disposed on both sides of the mounting base 2 , and the two fixing blocks 6 fix the two sides of the main bracket 11 respectively.

[0049] At least two bosses 61 are integrally formed on the fixing block 6; a positioning block 112 is provided on the main bracket 11, and when the mounting seat 2 abuts against the positioning block 112, the mounting seat hole 24 and the main bracket hole 111 match. This structure is convenient for workers to assemble, first push the mounting seat 2 until it abuts against the positioning block 112, and the boss 61 of the fixing block can pass through the mounting seat hole 24 and the main bracket hole 111 in sequence.

[0050] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A frame folding structure of a trolley suitcase, the frame comprising a main support (11) and an auxiliary support (12) hinged to each other, the main support (11) and the auxiliary support (12) are both provided with wheels (19); a handle bar (13) is provided on the main support (11); the characteristics are: A mounting seat (2) is fixedly provided on the main bracket (11), and connecting seats (3) are fixedly provided on both sides of the auxiliary bracket (12), and the two connecting seats (3) are rotatably connected to both sides of the mounting seat (2) respectively; A transverse pin (5) is arranged on the mounting seat (2), an arc-shaped groove (31) is arranged on the side of the connecting seat (3), limiting grooves (32) are arranged at both ends of the arc-shaped groove (31), and both ends of the transverse pin (5) are limited in the corresponding arc-shaped groove (31) or the limiting groove (32); The invention comprises a pushing member (4), the pushing member (4) is connected to a transverse pin (5), an elastic member acts on the pushing member (4) or the transverse pin (5), the elastic member gives a force to the transverse pin (5) to enter a limiting groove (32), the transverse pin (5) is located in the limiting groove (32), and the frame is kept in an unfolded or folded state; when an external force is applied, the pushing member (4) drives the transverse pin (5) to leave the limiting groove and enter the arc groove (31), and the frame can be folded.

2. The frame folding structure of the trolley case according to claim 1 is characterized in that: The mounting seat (2) is provided with a longitudinal slot (22), and the transverse pin (5) moves along the longitudinal slot (22).

3. The frame folding structure of the trolley case according to claim 1 or 2, characterized in that: The transverse pin passes through the pusher or is fixed to the pusher via a fastener; the mounting seat (2) has an inner recess (21), the pusher (4) and the elastic member are arranged in the inner recess (21); the pusher (4) moves along the side of the inner recess (21).

4. The frame folding structure of the trolley case according to claim 3 is characterized in that: At least one protrusion (33) is provided on the connection seat (3), and an arc segment (25) cooperating with the protrusion (33) is provided on the side of the mounting seat (2); the protrusion (33) is always located in the arc segment (25).

5. The frame folding structure of the trolley case according to claim 4 is characterized in that: A rotating shaft (23) is fixed or integrally formed on the mounting seat (2), and both ends of the rotating shaft (23) extend into the corresponding connecting seat (3); the transverse pin (5) is a metal rod.

6. The frame folding structure of the trolley case according to claim 1, 2, 4 or 5, characterized in that: The seat (14) is integrally formed on the mounting seat (2).

7. The frame folding structure of the trolley case according to claim 1, 2, 4 or 5, characterized in that: The fixing block (6) comprises a fixing block (6) on which a boss (61) is arranged. The fixing block (6) is fixed to the mounting seat (2) by means of a fastener. The boss (61) passes through holes on the sides of the mounting seat and the main bracket in sequence, thereby fixing the mounting seat (2) and the main bracket (11).

8. The frame folding structure of the trolley case according to claim 7, characterized in that: The fixing block is fixed in the internal gap between the mounting seat (2) and the connecting seat (3).

9. The frame folding structure of the trolley case according to claim 8, characterized in that: The fixing blocks (6) are arranged on both sides of the mounting seat (2), and the two fixing blocks (6) respectively fix the two sides of the main bracket (11).

10. The frame folding structure of the trolley case according to claim 8 or 9, characterized in that: At least two bosses (61) are integrally formed on the fixing block (6); a positioning block (112) is provided on the main bracket (11); when the mounting seat (2) abuts against the positioning block (112), the hole of the mounting seat matches the hole of the main bracket, and the boss can pass through the hole of the mounting seat and the hole of the main bracket in sequence.

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