Draw-bar mechanism of draw-bar box

Abstract

The utility model discloses a draw bar mechanism of a draw-bar box, which comprises a base rod, fixed shells and a telescopic rod body, the fixed shells are symmetrically fixed at two ends of the rod body of the base rod, the telescopic rod body extends out of a rod opening at the top end of the base rod, the draw bar mechanism further comprises a holding and limiting mechanism, and the holding and limiting mechanism is arranged at the base rod and the telescopic rod body. The U-shaped limiting seat can be clamped outside the telescopic rod body in a sleeving mode, the abutting plate is pressed on the telescopic rod body through the rotary handle bolt, the base sleeve seat connected with the supporting plate and the base bridge plate in an L shape is kept at the position of the base rod below the U-shaped limiting seat, and therefore extra supporting and limiting are formed on the telescopic rod body, and through the design, shaking force damage to the telescopic rod body can be effectively shared; left-right shaking caused by the situations that the load of the draw-bar box is large, a user turns and the like is avoided, the stability of the draw bar in the using process is remarkably improved, and the smoothness of traction operation is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of trolley case accessories, and in particular to a trolley case handle mechanism. Background Technology

[0002] A rolling suitcase is a type of luggage with a handle and wheels. It is used by people to carry clothes, personal care products, souvenirs, and other items when traveling. When using a rolling suitcase, the handle is usually bolted to the back of the suitcase, and the user can then hold the handle to move the suitcase.

[0003] Currently, when the telescopic handle of a suitcase is extended outwards, the longer telescopic rod and the base rod are often a simple hollow rod structure. When the telescopic handle with a handle is pulled, the suitcase, which is under heavy load, will usually sway from side to side as the user turns. With the continuous swaying of the telescopic handle, it is easy for the telescopic handle and the base rod at the bottom to loosen. The loose telescopic handle can easily affect the operation feel during subsequent pulling and use, and also affect the smoothness of turning and moving the suitcase. To address this, we propose a new handle mechanism for suitcases. Utility Model Content

[0004] The main objective of this invention is to provide a pull rod mechanism for a suitcase. A holding mechanism is provided at the base rod and the telescopic rod body. When the telescopic rod body is extended for use, a U-shaped limiting seat can be fitted onto the telescopic rod body, and a stop plate is pressed onto the telescopic rod body by a screw bolt. The base sleeve seat, connected to the base plate and base bridge plate by an L-shaped support plate below the U-shaped limiting seat, remains at the base rod, thus providing additional support and limiting for the telescopic rod body. This design effectively distributes the swaying force damage to the telescopic rod body, avoiding left-right swaying caused by heavy suitcase loads or user turns, significantly improving the stability of the pull rod during use, ensuring smooth pulling operation, and effectively solving the problems in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A pull rod mechanism for a suitcase includes a base rod, fixed shells, and a telescopic rod. The base rod has fixed shells symmetrically fixed at both ends, and a telescopic rod extends from the top of the base rod. It also includes a holding mechanism, which comprises a base sleeve, a base bridge plate, an L-shaped support plate, a U-shaped limiting seat, a top bridge plate, a rubber connecting frame, a stop plate, and a swivel bolt. A base sleeve is fitted over the outer side of the base rod between the fixed shells, and a base bridge plate is welded between the base sleeve's base plates. An L-shaped support plate is welded to the top of the outer plate of the plate, and a T-shaped insert is inserted into the top of the L-shaped support plate. The T-shaped insert is symmetrically welded to the bottom of the U-shaped limiting seat. A top bridge plate is welded between the U-shaped limiting seats. A backing plate is bonded to the inner opposite seat wall of the U-shaped limiting seat through a rubber frame. An upper rotating hole is opened through the U-shaped limiting seat behind the backing plate. Bottom rotating holes are opened through the outer side of the seat walls on both sides of the base sleeve. A rotating handle bolt is screwed into the bottom rotating hole and the upper rotating hole.

[0007] Furthermore, a T-shaped plate groove is provided on the inner wall of the U-shaped limiting seat, and a rubber connecting frame is glued to the large groove of the T-shaped plate groove. A backing plate is glued to the frame opening of the rubber connecting frame, and a receiving groove is provided on the back plate surface of the backing plate.

[0008] By adopting the above technical solution, the U-shaped limiting seat can accommodate the rubber connecting frame for bonding with the T-shaped plate groove. Then, the frame opening of the rubber connecting frame can be bonded to the abutment plate. When the screw is screwed in from the upper screw hole, the screw can be screwed against the groove of the abutment plate, thereby pressing the abutment plate against the telescopic rod body for holding.

[0009] Furthermore, T-shaped slots are symmetrically provided at the top thick plate of the L-shaped support plate, and T-shaped inserts are inserted into the cavity of the T-shaped slots.

[0010] By adopting the above technical solution, the L-shaped support plate can be fitted with a T-shaped insert through a T-shaped slot, thereby enabling the U-shaped limit seat to obtain support at the L-shaped support plate.

[0011] Furthermore, the central plate of the base bridge plate is welded between the base body of the base sleeve, and the rear plate of the base bridge plate is welded to the outside of the base plate of the base sleeve.

[0012] By adopting the above technical solution, after the central plate of the bridge deck is connected to the base sleeve, the subsequent plate can be welded to the base sleeve for secondary welding, thereby improving the connection between the bridge deck and the base sleeve.

[0013] Furthermore, the top bridge plate has arc-shaped surfaces on both sides, and the arc-shaped surfaces of the top bridge plate are welded and fixed at the arc surfaces of the two sets of seats of the U-shaped limiting seat.

[0014] By adopting the above technical solution, the top bridge plate can be fixed to the curved surface of the U-shaped limiting seat by adapting its curved surface.

[0015] Furthermore, the length of the screw body of the screw is greater than the cavity depth of the bottom screw hole and the top screw hole, and the head and handle of the screw are provided with a rib groove.

[0016] By adopting the above technical solution, by holding the handle body of the screw with the grooved head, the screw body of the screw can be easily screwed into the bottom screw hole and the top screw hole, so that the longer screw body can be screwed out at the bottom screw hole and the top screw hole for the pressure of the rod.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This utility model incorporates a holding mechanism at the base rod and telescopic rod body. When the telescopic rod body is pulled out for use, a U-shaped limiting seat can be fitted onto the telescopic rod body, and a stop plate can be pressed onto the telescopic rod body by a screw bolt. The base sleeve seat below the U-shaped limiting seat, which is connected to the support plate and the base bridge plate by an L-shaped connection, remains at the base rod, thus providing additional support and limiting for the telescopic rod body. This design can effectively share the damage caused by the swaying force on the telescopic rod body, avoid left and right swaying caused by the large load of the suitcase or the user turning, significantly improve the stability of the rod during use, and ensure the smoothness of the pulling operation.

[0019] Furthermore, the holding mechanism can flexibly switch between the storage and holding states. When the telescopic rod is retracted into the base rod, the holding mechanism can be stored without affecting the overall appearance and storage of the suitcase. When needed, installation can be quickly completed by simply loosening, adjusting, and tightening the handle bolt, meeting the needs of different usage scenarios without changing the original basic structure of the suitcase, demonstrating good versatility and adaptability. Attached Figure Description

[0020] Figure 1 This is a schematic diagram showing the holding state of the lever mechanism of a trolley case according to the present invention.

[0021] Figure 2 This is a schematic diagram of the folded-up state of the pull rod mechanism of a trolley case according to the present invention.

[0022] Figure 3 This is an exploded view of the holding mechanism of the handle mechanism of a trolley case according to the present invention.

[0023] Figure 4 This is a schematic diagram showing the disassembled rubber frame, butt plate, and U-shaped limiting seat of the pull rod mechanism of a trolley case according to this utility model.

[0024] In the diagram: 1. Base rod; 2. Fixed shell; 3. Telescopic rod body; 4. Holding and limiting mechanism; 5. Base sleeve seat; 6. Base bridge plate; 7. L-shaped support plate; 8. T-shaped slot; 9. T-shaped insert; 10. U-shaped limiting seat; 11. Top bridge plate; 12. Rubber connecting frame; 13. Support plate; 14. Upper rotating hole; 15. Bottom rotating hole; 16. Rotating handle bolt. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] like Figure 1-4 As shown, a pull rod mechanism for a suitcase includes a base rod 1, a fixed shell 2, and a telescopic rod 3. The fixed shells 2 are symmetrically fixed at both ends of the base rod 1, and the telescopic rod 3 extends from the top of the base rod 1. It also includes a holding mechanism 4, which comprises a base sleeve 5, a base bridge plate 6, an L-shaped support plate 7, a U-shaped limiting seat 10, a top bridge plate 11, a rubber connecting frame 12, a stop plate 13, and a handle bolt 16. The base sleeve 5 is fitted over the base rod 1 between the fixed shells 2, and the base bridge plate 6 is welded between the base plates of the base sleeve 5. An L-shaped support plate 7 is welded to the top of the outer plate of the 6, and a T-shaped insert 9 is inserted into the top of the L-shaped support plate 7. The T-shaped insert 9 is symmetrically welded to the bottom of the U-shaped limiting seat 10, and a top bridge plate 11 is welded between the seats of the U-shaped limiting seat 10. A backing plate 13 is bonded to the inner opposite seat wall of the U-shaped limiting seat 10 through a rubber connecting frame 12, and an upper rotating hole 14 is provided through the U-shaped limiting seat 10 behind the backing plate 13. Bottom rotating holes 15 are provided through the outer sides of the seat walls of the base sleeve 5, and a rotating handle bolt 16 is screwed into the bottom rotating hole 15 and the upper rotating hole 14.

[0027] The U-shaped limiting seat 10 has a T-shaped plate groove on its inner wall facing each other, and a rubber connecting frame 12 is glued to the large opening of the T-shaped plate groove. A backing plate 13 is glued to the frame opening of the rubber connecting frame 12, and a receiving groove is opened on the back plate surface of the backing plate 13.

[0028] By adopting the above technical solution, the U-shaped limiting seat 10 can accommodate the rubber connecting frame 12 for bonding with the T-shaped plate groove. Then, the frame opening of the rubber connecting frame 12 can be bonded to the abutment plate 13. When the swivel bolt 16 is screwed in from the upper swivel hole 14, the swivel bolt 16 can be screwed against the groove of the abutment plate 13, thereby pressing the abutment plate 13 against the telescopic rod body 3 for holding.

[0029] Among them, T-shaped slots 8 are symmetrically provided at the top thick plate of the L-shaped support plate 7, and T-shaped inserts 9 are inserted into the cavity of the T-shaped slots 8.

[0030] By adopting the above technical solution, the L-shaped support plate 7 can be fitted with a T-shaped insert 9 through the T-shaped slot 8, so that the U-shaped limit seat 10 can obtain support at the L-shaped support plate 7.

[0031] The central plate of the base bridge plate 6 is welded between the base bodies of the base sleeve 5, and the rear plate of the base bridge plate 6 is welded to the outside of the base plate of the base sleeve 5.

[0032] By adopting the above technical solution, after the central plate of the bridge base plate 6 is connected to the base sleeve 5, the subsequent plate can be welded to the base sleeve 5 for secondary welding, thereby improving the connection between the bridge base plate 6 and the base sleeve 5.

[0033] The top bridge plate 11 has arc-shaped surfaces on both sides, and the arc-shaped surfaces of the top bridge plate 11 are welded and fixed at the arc surfaces of the two sets of seats of the U-shaped limiting seat 10.

[0034] By adopting the above technical solution, the top bridge plate 11 can be fixed to the arc-shaped surface of the U-shaped limiting seat 10.

[0035] The length of the stem of the swivel bolt 16 is greater than the depth of the cavity of the bottom swivel hole 15 and the upper swivel hole 14, and the head and stem of the swivel bolt 16 are provided with a rib groove.

[0036] By adopting the above technical solution, by holding the head of the screw 16 with the groove, the screw body of the screw 16 can be easily screwed into the bottom screw hole 15 and the top screw hole 14, so that the longer screw body can be screwed out at the bottom screw hole 15 and the top screw hole 14 for the pressure of the rod body.

[0037] It should be noted that this utility model is a pull rod mechanism for a trolley case. A holding mechanism 4 is provided at the base rod 1 and the telescopic rod body 3. The base sleeve 5 of the holding mechanism 4 can be pre-fitted onto the base rod 1. Then, the two ends of the base rod 1 can be fixed with a fixing shell 2 for installation. The shell plate of the fixing shell 2 can be locked to the pull rod installation position of the trolley case with bolts. Subsequently, an L-shaped support plate 7 is provided above the base bridge plate 6 on the outside of the base sleeve 5. A T-shaped insert 9 is inserted through a T-shaped slot 8, so that the U-shaped limiting seat 10 can be used for the L-shaped support plate 7. The U-shaped limiting seat 10 is installed at plate 7. When the telescopic rod 3 is not pulled out, the U-shaped limiting seat 10 can be locked outside the base rod 1. Then, the screw 16 is screwed into the base sleeve 5 from the bottom screw hole 15 to press against the base rod. Then, the screw 16 can be screwed into the upper screw hole 14 of the U-shaped limiting seat 10, so that the screw 16 screws against the abutment plate 13 inside the rubber connecting frame 12, so that the abutment plate 13 can abut against the outside of the base rod 1. At this time, the holding mechanism 4 is in the storage state. When the telescopic rod 3 is pulled outward away from the base rod 1 and is in the pull rod use position and is held by the base rod 1... After the original internal locking structure is positioned, loosen the handle bolt 16 at the bottom screw hole 15 and the upper screw hole 14, then pull the U-shaped limit seat 10 upwards, causing the T-shaped insert 9 to leave the T-shaped slot 8. Next, pull the U-shaped limit seat 10 away from the L-shaped support plate 7, then pull the L-shaped support plate 7 upwards, so that the L-shaped support plate 7 is outside the telescopic rod 3. Then, put the U-shaped limit seat 10 into the telescopic rod 3, so that the U-shaped limit seat 10 is reinserted into the T-shaped slot 8 of the L-shaped support plate 7 with the T-shaped insert 9. Finally, tighten the handle bolt again. 16. The handle bolt 16 at the bottom rotating hole 15 is pressed and held outside the base rod 1 at the base sleeve seat 5. Then, the handle bolt 16 at the upper rotating hole 14 presses against the abutment plate 13 and contacts the telescopic rod 3 for pressure limitation, so that the holding and limiting mechanism 4 is held outside the base rod 1 and the telescopic rod 3 for external limit maintenance and to share the shaking force on the telescopic rod 3, thereby avoiding damage to the telescopic rod 3 due to excessive load on the pull box during the pulling process. When the telescopic rod 3 is retracted into the base rod 1, the holding and limiting mechanism 4 can be retracted in the retracted state according to the above steps.

[0038] It should be noted that this utility model is a pull rod mechanism for a suitcase. All components in this utility model are known to those skilled in the art, and their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A trolley mechanism of a trolley case, comprising a base rod (1), a fixed shell (2) and a telescopic rod body (3), the fixed shell (2) is symmetrically fixed at both ends of the rod body of the base rod (1), and the telescopic rod body (3) is extended at the top end rod opening of the base rod (1), characterized in that: Also include holding limit mechanism (4), the holding limit mechanism (4) includes base sleeve (5), base bridge plate (6), L-shaped counter support plate (7), U-shaped limit seat (10), top bridge plate (11), rubber connecting frame (12), abutment plate (13) and rotating handle bolt (16), the base rod (1) between the fixed shell (2) outside clamping cover has base sleeve (5), and the base sleeve (5) is welded between the seat plate and the base bridge plate (6), the outer plate body top of the base bridge plate (6) is welded with L-shaped counter support plate (7), and the L-shaped counter support plate (7) top end is inserted with T-shaped insertion strip (9), the T-shaped insertion strip (9) is symmetrically welded below the seat body of U-shaped limit seat (10), and the seat body of U-shaped limit seat (10) is welded with top bridge plate (11), the inner counter seat wall of U-shaped limit seat (10) is bonded with abutment plate (13) through rubber connecting frame (12), and the U-shaped limit seat (10) behind abutment plate (13) is penetrated and provided with upper rotating hole (14), the both sides of the base sleeve (5) seat wall is penetrated and provided with bottom rotating hole (15), and the bottom rotating hole (15) and the upper rotating hole (14) are rotated and inserted with rotating handle bolt (16).

2. The draw mechanism of claim 1, wherein: The counter inner seat wall of the U-shaped limit seat (10) is provided with a T-shaped plate groove, and the rubber connecting frame (12) is bonded in the large slot of the T-shaped plate groove, the frame opening of the rubber connecting frame (12) is bonded with the abutment plate (13), and the back plate face of the abutment plate (13) is provided with a receiving groove.

3. The draw mechanism of claim 1, wherein: The top end thick plate of the L-shaped counter support plate (7) is symmetrically provided with a T-shaped insertion slot (8), and the T-shaped insertion strip (9) is inserted in the slot cavity of the T-shaped insertion slot (8).

4. The draw mechanism of claim 1, wherein: The center plate body of the base bridge plate (6) is welded between the seat body of the base sleeve (5), and the rear plate body of the base bridge plate (6) is welded outside the seat plate of the base sleeve (5).

5. The draw mechanism of claim 1, wherein: The plate body of the top bridge plate (11) is provided with an arc face on both sides, and the arc face of the top bridge plate (11) is welded and fixed at the two groups of seat body arc faces of the U-shaped limit seat (10).

6. The draw mechanism of claim 1, wherein: The bolt body length of the rotating handle bolt (16) is greater than the hole cavity depth of the bottom rotating hole (15) and the upper rotating hole (14), and the head handle body of the rotating handle bolt (16) is provided with a rib groove.

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