Folding handle structure of draw-bar box and draw-bar box

Abstract

The utility model provides a folding handle structure of a draw-bar box. The folding handle structure comprises a first section of draw bar, a second section of draw bar and a third section of draw bar which are connected in sequence, the third section of pull rod is fixed with the box body, the second section of pull rod can be folded relative to the third section of pull rod, and the first section of pull rod can be folded relative to the second section of pull rod; an upper sliding sleeve is arranged at the connecting position of the first section of pull rod and the second section of pull rod, and a lower sliding sleeve is arranged at the connecting position of the second section of pull rod and the third section of pull rod; an elastic limiting piece is arranged in the second section of pull rod, and the upper sliding sleeve and the lower sliding sleeve abut against the two ends of the elastic limiting piece respectively; the upper sliding sleeve and the lower sliding sleeve extrude the elastic limiting piece and can slide along the rod body of the second section of pull rod; the upper sliding sleeve and the lower sliding sleeve are slid to release or lock the folding of the corresponding first-section pull rod and the second-section pull rod, and the draw-bar box is firmer and more durable compared with a telescopic pull rod by arranging the folding pull rod.

Description

Technical Field

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

[0002] Trolley cases are a convenient, space-saving, and environmentally friendly means of transport. To facilitate portability and transportation, they are typically fitted with a trolley. The design of the trolley should take into account the size and weight of the case, as well as its load-bearing capacity and user experience. Common trolley configurations include: 1. Fixed trolleys, which are fixed to the case and can be moved by hand; 2. Telescopic trolleys, which can be adjusted in length to suit actual needs, making transport easier.

[0003] It is known that the telescopic pull rod is the most commonly used pull rod structure for packaging boxes. Although the telescopic pull rod has the advantage of flexible length adjustment, it also has some disadvantages during operation: First, since the pull rod is pull-out type, the retractable rod part is usually fragile. If it is subjected to excessive impact, collision or other improper use, it may cause damage to the pull rod, thereby affecting normal use; second, the spring inside the pull rod may break and fall out after the pull rod is pulled for a long time, or the parts inside the pull rod may be misaligned after the pull rod is pulled out, resulting in the pull rod cannot be pressed back. These situations will make the pull rod unable to be pulled out or pressed back normally, causing trouble to the user. Utility Model Content

[0004] In order to solve the problems of telescopic pull rods installed on existing packing boxes being easily damaged, having poor durability, and being easily stuck or loosened during pulling and pulling, the utility model provides a folding handle structure for a trolley case. The folding pull rod is more sturdy and durable than the telescopic pull rod. The pull rod can be folded or straightened and fixed to pull the packing box. It is not prone to malfunction and is easy to use.

[0005] In order to solve the above technical problems, the present invention provides a folding handle structure for a trolley case, the folding handle structure comprising a first section of the trolley case, a second section of the trolley case, and a third section of the trolley case connected in sequence; the third section of the trolley case is fixed to the case body, the second section of the trolley case can be folded relative to the third section of the trolley case, and the first section of the trolley case can be folded relative to the second section of the trolley case;

[0006] An upper sliding sleeve is provided at the connection position between the first and second tie rods, and a lower sliding sleeve is provided at the connection position between the second and third tie rods; an elastic limiting member is provided in the second tie rod, and the upper sliding sleeve and the lower sliding sleeve respectively abut against the two ends of the elastic limiting member;

[0007] The upper sliding sleeve and the lower sliding sleeve squeeze the elastic limiting member and can slide along the rod body of the second section pull rod; sliding the upper sliding sleeve and the lower sliding sleeve releases or locks the folding of the corresponding first section pull rod and the second section pull rod.

[0008] In a preferred embodiment, the first and second tie rods, and the second and third tie rods are all rotatably connected via hinges.

[0009] In a preferred embodiment, a spring limiting sleeve is provided in the second section of the pull rod, and the elastic limiting member includes a first spring and a second spring;

[0010] One end of the first spring and the second spring respectively abut against two ends of the spring limiting sleeve, the other end of the first spring abuts against the upper sliding sleeve, and the other end of the second spring abuts against the lower sliding sleeve.

[0011] In a preferred embodiment, the upper sliding sleeve is slidably mounted on the upper end of the second pull rod, and a first latch is provided on the upper sliding sleeve, and the first latch is abutted against the first spring;

[0012] The second pull rod is provided with a first sliding groove corresponding to the first latch pin, and the first latch pin is slidably engaged with the first sliding groove.

[0013] In a preferred embodiment, the lower sleeve is slidably mounted on the lower end of the second pull rod, and a second latch is provided on the lower sleeve, and the second latch is abutted against the second spring;

[0014] The second section of the pull rod is provided with a second sliding groove corresponding to the second latch pin, and the second latch pin is slidably engaged with the second sliding groove.

[0015] The utility model also provides a trolley case, comprising the folding handle structure; the trolley case comprises a case body and a case cover, the case cover is provided with a groove, and the case body is provided with a clamp;

[0016] The first section of the pull rod includes a handle. After being folded, the second section of the pull rod is placed in the groove, and the handle is locked with the clamp.

[0017] In a preferred embodiment, the third tie rod is connected to the bottom and side surfaces of the box body in an L-shaped structure;

[0018] The clamping member is arranged on a side surface of the box body opposite to the third pull rod.

[0019] In a preferred embodiment, the clamping member includes a bayonet and a protrusion, a slot is provided on the handle, the handle is clamped into the bayonet, and the protrusion is locked with the slot.

[0020] In a preferred embodiment, a lock box member is provided on the box body for locking or releasing the box cover.

[0021] In a preferred embodiment, rollers and bosses are provided on the bottom surface of the box.

[0022] Compared with the existing technology, the technical solution of the utility model has the following beneficial effects:

[0023] 1. Provide a foldable pull rod structure. After folding, the pull rod can be embedded in the box body. The folding space of the pull rod is designed as one with the box body, which reduces the space occupied by folding and is easy to store. It is suitable for scenes where it is not used for a long time or space is limited.

[0024] 2. A folding pull rod structure is installed on the trolley case, which is relatively sturdy and durable compared to the telescopic pull rod. Only two sections of the pull rod need to be folded, and the overall structure of the pull rod is consistent. This solves the problem of the telescopic pull rod being fragile and easy to be damaged when using the telescopic pull rod in the existing technology. The structure is sturdier than the telescopic pull rod.

[0025] 3. It adopts a folding handle structure with simple structure and easy use: the folding handle only requires two sections of the handle to be folded. When in use, it only needs to be unfolded and folded, and there is no need to adjust the length. There is no repeated pulling and pulling. The structure is more stable than the telescopic handle and has a long service life.

[0026] 4. A sliding sleeve is set between the two sections of the pull rod for locking. The sliding sleeve uses an elastic limiter to lock the pull rod after it is extended, and the pull rod is locked by sliding the sliding sleeve. The structure is smooth and not prone to jamming or stucking, which increases the service life of the sliding sleeve lock. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a diagram showing the coordination between the folding handle structure and the suitcase in this embodiment;

[0028] Figure 2 is a schematic diagram of the folding handle structure in this embodiment;

[0029] Figure 3 This is a schematic diagram of the folding of the first section of the pull rod in this embodiment;

[0030] Figure 4 This is a schematic diagram of the folding of the second section of the pull rod in this embodiment;

[0031] Figure 5 This is a diagram showing the coordination between the elastic limiting member and the upper sliding sleeve and the lower sliding sleeve in this embodiment;

[0032] Figure 6 Schematic diagram of the positions of the first chute and the second chute in this embodiment;

[0033] Figure 7This is a schematic diagram of the locking positions of the upper sliding sleeve and the lower sliding sleeve in this embodiment;

[0034] Figure 8 Schematic diagram of the unlocking position of the upper sliding sleeve and the lower sliding sleeve in this embodiment;

[0035] Figure 9 This is a diagram showing the sliding cooperation between the elastic limiter and the upper sliding sleeve and the lower sliding sleeve in this embodiment;

[0036] Figure 10 This is a schematic diagram of the first and second pull rods being unlocked and folded in this embodiment;

[0037] Figure 11 This is an operation diagram of unlocking the first section of the trolley case in this embodiment;

[0038] Figure 12 This is an operational diagram of folding the first section of the drawbar of the drawbar case in this embodiment;

[0039] Figure 13 This is an operation diagram of unlocking the second section of the trolley case in this embodiment;

[0040] Figure 14 This is an operational diagram of folding the second section of the drawbar of the drawbar case in this embodiment;

[0041] Figure 15 This is a schematic diagram of the buckling connection between the handle and the clamping piece on the box body in this embodiment;

[0042] Figure 16 This is a schematic diagram of the folding handle structure of the suitcase in this embodiment;

[0043] Figure 17 This is a side view of the folded trolley case in this embodiment.

[0044] Explanation of the accompanying reference numerals: 1. First section of the pull rod; 11. Handle; 12. Slot; 2. Second section of the pull rod; 21. Spring limit sleeve; 22. First spring; 23. Second spring; 24. First slide groove; 25. Second slide groove; 3. Third section of the pull rod; 4. Upper slide sleeve; 41. First latch; 5. Lower slide sleeve; 51. Second latch; 6. Hinge; 7. Box body; 71. Bayonet; 72. Protrusion; 73. Roller; 74. Boss; 8. Box cover; 81. Groove; 9. Lock box component. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0046] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0047] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] refer to Figures 1-10 This embodiment provides a folding handle structure for a trolley case. The folding handle structure is mounted on the case body 7 of the trolley case, providing a power-assisting structure for the trolley case to facilitate dragging and carrying. The trolley case can be used to store and carry furniture, instruments, equipment, etc.

[0049] like Figure 1 The installation structure of the folding handle structure and the trolley case is as follows: the folding handle structure includes a first section pull rod 1, a second section pull rod 2 and a third section pull rod 3 connected in sequence. The third section pull rod 3 serves as a fixing rod and is fixed to the bottom and side surfaces of the box body 7 of the trolley case in an L-shaped structure. The installation and fixing of the folding handle structure in an L-shaped structure can increase the strength and durability of the folding handle structure and the box body 7. The third section pull rod 3 and the bottom surface of the box body 7 are used to form a support to enhance the load strength of the box body 7 and ensure the safety of items during transportation.

[0050] like Figure 2-4The first section pull rod 1 and the second section pull rod 2, as well as the second section pull rod 2 and the third section pull rod 3 are all connected by hinges 6. The second section pull rod 2 can be folded relative to the third section pull rod 3, and the first section pull rod 1 can be folded relative to the second section pull rod 2. An upper sliding sleeve 4 is provided at the connection position between the first section pull rod 1 and the second section pull rod 2, and a lower sliding sleeve 5 is provided at the connection position between the second section pull rod 2 and the third section pull rod 3. When the first section pull rod 1 and the second section pull rod 2, as well as the second section pull rod 2 and the third section pull rod 3 are rotated and unfolded relative to each other, the upper sliding sleeve 4 and the lower sliding sleeve 5 form corresponding locking limits on the first section pull rod 1 and the second section pull rod 2, so that the first section pull rod 1 and the second section pull rod 2 cannot rotate, thereby being locked in the unfolded state. At this time, the folding handle structure is in the handle use state, as shown in FIG. Figure 2 .

[0051] The locking structure of the upper sliding sleeve 4 and the lower sliding sleeve 5 for the first section pull rod 1 and the second section pull rod 2 is that an elastic limiter is set in the second section pull rod 2, and the upper sliding sleeve 4 and the lower sliding sleeve 5 respectively abut against the two ends of the elastic limiter. Under the elastic force of the elastic limiter, the upper sliding sleeve 4 moves up to cover the hinge 6 connecting the first section pull rod 1 and the second section pull rod 2 in the upper sliding sleeve 4, forming a restriction on the rotation of the hinge 6, and the lower sliding sleeve 5 moves down to cover the hinge 6 connecting the second section pull rod 2 and the third section pull rod 3 in the lower sliding sleeve 5, forming a restriction on the rotation of the hinge 6. Figure 7 .

[0052] like Figure 5 In order to facilitate the separate control of the sliding of the upper sleeve 4 and the lower sleeve 5, the elastic limit member is divided into a first spring 22 and a second spring 23, and a spring limit sleeve 21 is centrally arranged in the second section pull rod 2. One end of the first spring 22 and the second spring 23 respectively abut against the two ends of the elastic limit sleeve, the other end of the first spring 22 abuts against the upper sleeve 4, and the other end of the second spring 23 abuts against the lower sleeve 5. When force acts on the upper sleeve 4 or the lower sleeve 5, the first spring 22 or the second spring 23 can be squeezed to make the upper sleeve 4 or the lower sleeve 5 retract (such as Figure 9 ), so that the corresponding hinge 6 is exposed (as Figure 8 ), the hinge 6 recovers its rotation function after being released from the restriction of the upper sleeve 4 or the lower sleeve 5 (such as Figure 10 ), at this time the folding handle structure can be folded.

[0053] In order to facilitate the upper sliding sleeve 4 and the lower sliding sleeve 5 to slide more smoothly and stably, a sliding guide structure is provided between the upper sliding sleeve 4, the lower sliding sleeve 5 and the second section pull rod 2, such as Figure 5-6 , specifically as follows:

[0054] The upper sleeve 4 is slidably mounted on the upper end of the second section pull rod 2. A first pin 41 is provided on the upper sleeve 4. A first sliding groove 24 is provided on the second section pull rod 2 corresponding to the first pin 41. The first pin 41 slides in conjunction with the first sliding groove 24, and the first spring 22 rests against the first pin 41.

[0055] The lower sleeve 5 is slidably mounted on the lower end of the second section pull rod 2. A second pin 51 is provided on the lower sleeve 5. The second section pull rod 2 is provided with a second sliding groove 25 corresponding to the second pin 51. The second pin 51 slides in conjunction with the second sliding groove 25, and the second spring 23 rests on the second pin 51.

[0056] The first sliding groove 24 and the second sliding groove 25 form a guiding function, and cooperate with the sliding of the first latch 41 and the second latch 51 in the first sliding groove 24 and the second sliding groove 25 to achieve sliding guidance of the upper sliding sleeve 4 and the lower sliding sleeve 5.

[0057] like Figure 11-16 The folding handle structure cooperates with the folding storage of the trolley case as follows: the trolley case includes a box body 7 and a box cover 8, a groove 81 is provided on the box cover 8, and a clamp is provided on one side of the box body 7, which is provided relative to the third section of the pull rod 3.

[0058] Since the upper sliding sleeve 4 and the lower sliding sleeve 5 are arranged on the second section pull rod 2, when folding, the upper sliding sleeve 4 and the lower sliding sleeve 5 are both slid and retracted on the second section pull rod 2, so the groove 81 provided on the box cover 8 matches the structural shape after the second section pull rod 2 retracts the upper sliding sleeve 4 and the lower sliding sleeve 5. The structure of the groove 81 on the box cover 8 is as follows Figure 13 The second section of the pull rod 2 is folded and placed on the groove 81 as shown in FIG. Figure 15 .

[0059] like Figure 15 The first section of the pull rod 1 is provided with a handle 11, which is a horizontal bar structure, which is convenient for hand-pulling operation. The handle 11 is connected to the card piece in a detachable buckle connection, which is convenient for fixing the folding handle structure after folding. The specific structure is that a card slot 12 is provided on the handle 11 of the first section of the pull rod 1. The card piece includes a bayonet 71 and a protrusion 72. When the folding handle structure is folded, the handle 11 is used to snap into the bayonet 71, and the protrusion 72 is buckled with the card slot 12 to achieve a buckle connection between the handle 11 and the card piece. Figure 16 .

[0060] The folding steps of the folding handle structure and the trolley case are as follows: Figure 11 , first press the upper sleeve 4 downward, and the first spring 22 acts to retract the upper sleeve 4 onto the second section of the pull rod 2, and the hinge 6 connecting the first section of the pull rod 1 and the second section of the pull rod 2 is exposed; Figure 12 , keep the upper sliding sleeve 4 retracted, and fold the first section of the pull rod 1 toward the box cover 8; Figure 13After the first section of the pull rod 1 is folded, the lower sleeve 5 is lifted up, and the second spring 23 acts to make the lower sleeve 5 retract onto the second section of the pull rod 2, and the hinge 6 connecting the second section of the pull rod 2 and the third section of the pull rod 3 is exposed; Figure 14 , keep the lower sleeve 5 retracted, and fold the second section of the pull rod 2 toward the box cover 8; Figure 15 , fold the second section of the pull rod 2 completely and snap it into the groove 81 on the box cover 8, and align the handle 11 on the first section of the pull rod 1 with the card to snap it into place; Figure 16 After the handle 11 is buckled, the folding handle structure is folded.

[0061] The groove 81 cooperates with the second section of the pull rod 2 so that the second section of the pull rod 2 can be embedded in the box cover 8 after being folded, reducing the space occupied by the second section of the pull rod 2 after being folded, making it easier to store and receive. The folded state of the foldable handle structure is locked by the buckle of the handle 11 and the clamping member, which can prevent the foldable handle structure from detaching from the box body 7 during use, causing an accident.

[0062] like Figure 17 The box body 7 is provided with a lock box member 9 for locking or releasing the box lid 8, ensuring that the box lid 8 is completely closed and stable, thereby ensuring the safety of the items inside the box body 7 and preventing external impact. The lock box member 9 has a security function, which can prevent theft and unauthorized access to the items inside the box body 7. The structure of the lock box member 9 can adopt other locking structures known in the art, such as buckle-type cover lock, spring-type cover lock, block-type cover lock, electronic cover lock, etc.

[0063] The bottom surface of the box 7 is provided with rollers 73 and bosses 74. The rollers 73 are provided at the rear side of the box 7, and the bosses 74 are provided near the front side of the bottom surface of the box 7. The rollers 73 are provided to facilitate transportation, and the bosses 74 serve as support for the bottom of the box 7. On the one hand, it is convenient for long-term storage of the box 7 to prevent the rollers 73 from being damaged by the single-sided support. On the other hand, it balances the box 7 to facilitate the operation of placing and taking out items.

[0064] The above is only a preferred specific implementation method of the present invention, but the design concept of the present invention is not limited to this. Any technician familiar with the technical field who uses this concept to make non-substantial changes to the present invention within the technical scope disclosed by the present invention shall be deemed to infringe the protection scope of the present invention.

Claims

1. A folding handle structure for a trolley case, characterized by: The folding handle structure includes a first pull rod, a second pull rod and a third pull rod connected in sequence; the third pull rod is fixed to the box body, the second pull rod can be folded relative to the third pull rod, and the first pull rod can be folded relative to the second pull rod; An upper sliding sleeve is provided at the connection position between the first and second tie rods, and a lower sliding sleeve is provided at the connection position between the second and third tie rods; an elastic limiting member is provided in the second tie rod, and the upper sliding sleeve and the lower sliding sleeve respectively abut against the two ends of the elastic limiting member; The upper sliding sleeve and the lower sliding sleeve squeeze the elastic limiting member and can slide along the rod body of the second section pull rod; sliding the upper sliding sleeve and the lower sliding sleeve releases or locks the folding of the corresponding first section pull rod and the second section pull rod.

2. The folding handle structure of a suitcase according to claim 1, characterized in that: The first section pull rod and the second section pull rod, and the second section pull rod and the third section pull rod are all rotatably connected through hinges.

3. The folding handle structure of a suitcase according to claim 1, characterized in that: A spring limiting sleeve is provided in the second section of the pull rod, and the elastic limiting member includes a first spring and a second spring; One end of the first spring and the second spring respectively abut against two ends of the spring limiting sleeve, the other end of the first spring abuts against the upper sliding sleeve, and the other end of the second spring abuts against the lower sliding sleeve.

4. The folding handle structure of a suitcase according to claim 3, characterized in that: The upper sliding sleeve is slidably mounted on the upper end of the second pull rod, and a first latch is provided on the upper sliding sleeve, and the first latch is abutted against the first spring; The second pull rod is provided with a first sliding groove corresponding to the first latch pin, and the first latch pin is slidably engaged with the first sliding groove.

5. The folding handle structure of a suitcase according to claim 4, characterized in that: The lower sleeve is slidably mounted on the lower end of the second pull rod, and a second latch is provided on the lower sleeve, and the second latch is abutted against the second spring; The second section of the pull rod is provided with a second sliding groove corresponding to the second latch pin, and the second latch pin is slidably engaged with the second sliding groove.

6. A trolley case, characterized in that: The folding handle structure according to any one of claims 1 to 5 is included; the trolley case comprises a case body and a case cover, the case cover is provided with a groove, and the case body is provided with a clamp; The first section of the pull rod includes a handle. After being folded, the second section of the pull rod is placed in the groove, and the handle is locked with the clamp.

7. The trolley case according to claim 6, characterized in that: The third section of the pull rod is connected to the bottom and side surfaces of the box body in an L-shaped structure; The clamping member is arranged on a side surface of the box body opposite to the third pull rod.

8. The trolley case according to claim 6, characterized in that: The clamping member includes a bayonet and a protrusion. A bayonet slot is provided on the handle. The handle is clamped into the bayonet slot, and the protrusion is locked with the bayonet slot.

9. The trolley case according to claim 6, characterized in that: The box body is provided with a lock box component for locking or releasing the box cover.

10. The trolley case according to claim 6, characterized in that: The bottom surface of the box body is provided with rollers and bosses.

Images