An inner sleeve assembly device for a trolley assembly of a trolley case

Abstract

The utility model relates to a kind of inner guide sleeve assembly devices of draw-bar box draw-bar assembly, comprising: guide sleeve feeding device;Guide sleeve positioning seat is located in the side of guide sleeve feeding device;Guide sleeve press-in device is located between guide sleeve positioning seat and draw-bar fixing device, and is equipped with the guide sleeve insertion rod for being inserted into middle draw-bar;Guide sleeve transplanting device is located in the side of guide sleeve positioning seat and guide sleeve press-in device;Guide sleeve transplanting device is used to move inner guide sleeve from guide sleeve positioning seat to the end of middle draw-bar, and guide sleeve press-in device is used to insert guide sleeve insertion rod into inner guide sleeve and middle draw-bar, and inner guide sleeve is pressed into middle draw-bar.The assembly device realizes the assembly of inner guide sleeve by inserting inner guide sleeve into the outside of middle draw-bar, then realizes that large draw-bar is inserted into inner guide sleeve when large draw-bar and middle draw-bar are assembled, without auxiliary positioning device, greatly reduce the number of parts, reduce cost, improve the rhythm of assembly, and the reliability of assembly is high, also improve the qualified rate and efficiency of assembly.

Description

Technical Field

[0001] This utility model relates to an automatic assembly device for a trolley case handle assembly, and more particularly to an inner guide assembly device for a trolley case handle assembly. Background Technology

[0002] The pull rod assembly of the suitcase consists of a middle pull rod and a large pull rod forming a telescopic rod structure. In order to reduce the friction between the middle pull rod and the large pull rod and reduce the wear of the pull rod to improve its service life, while avoiding wear that could damage the appearance of the pull rod, an inner guide sleeve is installed at the end of the large pull rod. The middle pull rod is movably inserted into the inner guide sleeve. The inner guide sleeve is made of engineering plastic, which can reduce friction and has self-lubricating properties, preventing wear on the middle pull rod and protecting its appearance.

[0003] In existing tie rod assembly, the inner guide sleeve is first fixed to the end of the large tie rod, and then the middle tie rod is movably inserted into the inner guide sleeve. Due to the small gap between the inner guide sleeve and the large tie rod, and the considerable length of the large tie rod, the inner guide sleeve needs to be accurately inserted into the end of the large tie rod to ensure complete insertion. However, in reality, due to a certain positional error in the positioning of the large tie rod on the assembly line, the inner guide sleeve is prone to getting stuck at the end of the large tie rod during insertion, causing insertion failure. Other auxiliary positioning devices are needed to accurately position the large guide sleeve and also the inner guide sleeve, ensuring that the inner guide sleeve and the large tie rod are essentially coaxial. Only then can the inner guide sleeve be accurately inserted into the large tie rod, and then the middle tie rod can be accurately inserted into the inner guide sleeve. This assembly process involves two precise assembly stations, significantly increasing the difficulty of automated assembly, requiring more positioning devices, and raising the cost of automated assembly. Utility Model Content

[0004] To address the issue of requiring an auxiliary positioning device for precise positioning during the assembly of the inner guide sleeve, this utility model provides an inner guide sleeve assembly device for a trolley case pull rod assembly. The specific technical solution is as follows: An inner guide sleeve assembly device for a trolley handle assembly includes: a guide sleeve feeding device for sequentially feeding out inner guide sleeves; a guide sleeve positioning seat disposed on one side of the guide sleeve feeding device for positioning the inner guide sleeve fed out by the guide sleeve feeding device; a guide sleeve pressing device disposed between the guide sleeve positioning seat and the trolley handle fixing device, and having a guide sleeve insertion rod for inserting into the middle trolley handle; and a guide sleeve transplanting device disposed on one side of the guide sleeve positioning seat and the guide sleeve pressing device; wherein, the guide sleeve transplanting device is used to move the inner guide sleeve from the guide sleeve positioning seat to the end of the middle trolley handle, and the guide sleeve pressing device is used to insert the guide sleeve insertion rod into the inner guide sleeve and the middle trolley handle, and press the inner guide sleeve into the middle trolley handle.

[0005] Preferably, the guide sleeve pressing device includes: a guide sleeve insertion cylinder; a guide sleeve insertion seat disposed on the guide sleeve insertion cylinder and connected to the guide sleeve insertion rod; a guide sleeve pressing cylinder disposed on the guide sleeve insertion seat; and a guide sleeve pressing seat disposed on the guide sleeve pressing cylinder for pressing the inner guide sleeve from the guide sleeve insertion rod to the end of the middle pull rod.

[0006] Preferably, the guide sleeve insertion rod is provided with a guide sleeve pressing groove; the guide sleeve pressing seat is provided with a guide sleeve pressing rod, the guide sleeve pressing rod is movably inserted into the guide sleeve pressing groove, and is used to abut against the end of the inner guide sleeve so that the inner guide sleeve is pressed into the end of the middle pull rod.

[0007] Preferably, the end of the guide sleeve insertion rod is provided with a guide sleeve positioning post, which is used to insert into the interior of the middle pull rod.

[0008] Furthermore, the end of the guide sleeve positioning post is provided with a tapered guide sleeve insertion head.

[0009] Preferably, the guide sleeve pressing device further includes a guide sleeve pressing sensor, which is disposed on the guide sleeve pressing cylinder.

[0010] Preferably, the guide sleeve feeding device includes: a second vibrating plate; and a second feeding trough, disposed on the second vibrating plate, with one end movably located at the feeding end of the guide sleeve positioning seat.

[0011] Preferably, the guide sleeve transplanting device includes: a guide sleeve transplanting linear module; a guide sleeve transplanting seat disposed on the slide of the guide sleeve transplanting linear module; a guide sleeve transplanting lifting cylinder disposed on the guide sleeve transplanting seat; a guide sleeve transplanting gripper cylinder disposed on the guide sleeve transplanting lifting cylinder; and a guide sleeve transplanting clamping claw disposed on the guide sleeve transplanting gripper cylinder for clamping the inner guide sleeve.

[0012] Furthermore, the guide sleeve positioning seat is provided with a guide sleeve positioning groove and guide sleeve clamping grooves on both sides of the guide sleeve positioning groove, and the guide sleeve clamping grooves communicate with the guide sleeve positioning groove.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The inner guide sleeve assembly device of the trolley case pull rod assembly provided by the present invention assembles the inner guide sleeve by inserting the inner guide sleeve into the outside of the middle pull rod. Then, when assembling the large pull rod and the middle pull rod, the large pull rod is inserted into the inner guide sleeve. No auxiliary positioning device is required, which greatly reduces the number of parts, lowers the cost, and improves the assembly cycle time. It can ensure the reliability of the assembly and improve the qualification rate and efficiency of the assembly. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this application; Figure 2 This is a front view of this application; Figure 3 This is a top view of this application; Figure 4 This is a schematic diagram of the guide sleeve transplanting device; Figure 5 This is a schematic diagram of the guide sleeve pressing device; Figure 6 This is a front view of the guide sleeve pressing device; Figure 7 This is a schematic diagram of the guide sleeve positioning seat; Figure 8 This is an assembly diagram of the large tie rod, the middle tie rod, and the inner guide sleeve; Figure 9 This is a schematic diagram of the tie rod fixing device. Detailed Implementation

[0015] The present invention will now be further described with reference to the accompanying drawings.

[0016] like Figures 1 to 9 As shown, an inner guide sleeve assembly device for a trolley case pull rod assembly includes a guide sleeve feeding device 161, a guide sleeve positioning seat 162, a guide sleeve pressing device 165, and a guide sleeve transfer device 163, all mounted on a guide sleeve assembly frame 168. The guide sleeve feeding device 161, the guide sleeve positioning seat 162, and the guide sleeve pressing device 165 are arranged along the same axis. The guide sleeve feeding device 161 is used to sequentially feed out inner guide sleeves 505, ensuring that the inner guide sleeves 505 are oriented in the same direction. The guide sleeve positioning seat 162 is located at the discharge end of the guide sleeve feeding device 161 and is used to position the inner guide sleeves fed out by the guide sleeve feeding device 161. Guide sleeve 505; Guide sleeve pressing device 165 is located between guide sleeve positioning seat 162 and pull rod fixing device 10. Guide sleeve pressing device 165 is provided with guide sleeve insertion rod 1655 for inserting into the middle pull rod 504; Guide sleeve transplanting device 163 is located on one side of guide sleeve positioning seat 162 and guide sleeve pressing device 165; Guide sleeve transplanting device 163 is used to move inner guide sleeve 505 from guide sleeve positioning seat 162 to the end of middle pull rod 504. Guide sleeve pressing device is used to insert guide sleeve insertion rod 1655 into inner guide sleeve 505 and middle pull rod 504, and press inner guide sleeve 505 into middle pull rod 504.

[0017] The guide sleeve feeding device 161 feeds the inner guide sleeves 505 sequentially onto the guide sleeve positioning seat 162 in the same direction. The guide sleeve positioning seat 162 keeps the initial position of the inner guide sleeves 505 fixed, making it convenient for the guide sleeve transfer device 163 to grab the inner guide sleeves 505. The guide sleeve transfer device 163 moves the inner guide sleeves 505 from the guide sleeve positioning seat 162 to the end of the middle pull rod 504 and aligns the inner guide sleeves 505 with the middle pull rod 504. The guide sleeve pressing device 165 is activated and presses the inner guide sleeves 505 into the end of the middle pull rod 504, completing the automatic assembly of the inner guide sleeves 505.

[0018] Meanwhile, since the inner guide sleeve 505 can be coaxially aligned with the central tie rod 504, and the guide sleeve insertion rod 1655 is inserted into both the end of the central tie rod 504 and the inner guide sleeve 505, the inner guide sleeve 505 can smoothly press against the central tie rod 504 via the guide sleeve insertion rod 1655. This effectively prevents the inner guide sleeve 505 from pressing against the end of the central tie rod 504, thus avoiding assembly failure and damage to the inner guide sleeve 505, greatly improving the assembly pass rate and efficiency. Because no auxiliary positioning device is involved, the cycle time is reduced, thereby improving assembly efficiency.

[0019] Specifically, the guide sleeve feeding device 161 includes a second vibratory feeder 1611 and a second feeding trough 1612. The second vibratory feeder 1611 is mounted on the guide sleeve mounting frame 168 and located at one end of the frame. The second vibratory feeder 1611 is a disc vibrating feeder, a mature existing product, and will not be described in detail here. The second feeding trough 1612 is fixed on the second vibratory feeder 1611, and one end is movably located at the feed end of the guide sleeve positioning seat 162. The second vibratory feeder 1611 feeds the inner guide sleeve 505 sequentially through the second feeding trough 1612 in the same direction. The second feeding trough 1612 matches the inner guide sleeve 505, allowing the inner guide sleeve 505 to move along the axis onto the guide sleeve positioning seat 162.

[0020] To improve efficiency, the guide sleeve feeding device 161 and the guide sleeve positioning seat 162 are both equipped with two sets, which can realize the installation of two middle pull rods 504 and two inner guide sleeves 505 in one go. That is, the assembly of the two middle pull rods 504 and two inner guide sleeves 505 of the pull rod box is completed in one go, which facilitates the subsequent overall assembly of the pull rod assembly.

[0021] The guide sleeve positioning seat 162 is mounted on the guide sleeve positioning plate, which is fixed to one end of the top of the guide sleeve assembly column 164. The guide sleeve assembly column 164 is fixed to the other end of the guide sleeve assembly frame 168. The guide sleeve positioning seat 162 is provided with a guide sleeve positioning groove 1621 and a guide sleeve clamping groove 1622. One end of the guide sleeve positioning groove 1621 is located at the end of the guide sleeve positioning seat 162, forming an open groove. The guide sleeve clamping groove 1622 is located on both sides of the guide sleeve positioning seat 162 and communicates with both sides of the guide sleeve positioning groove 1621, forming a cross-shaped groove.

[0022] The guide sleeve pressing device 165 includes a guide sleeve insertion cylinder 1651, a guide sleeve insertion seat 1652, a guide sleeve insertion rod 1655, a guide sleeve pressing cylinder 1653, and a guide sleeve pressing seat 1654. The guide sleeve insertion cylinder 1651 is fixed to the other end of the top of the guide sleeve mounting column 164 and is located between the guide sleeve positioning seat 162 and the pull rod fixing device 10. The guide sleeve insertion cylinder 1651 is horizontally arranged and is a dual-shaft cylinder. The piston rod of the guide sleeve insertion cylinder 1651 is connected to the guide sleeve insertion seat 1652, and the guide sleeve insertion rod 1655 is installed on... The guide sleeve insertion seat 1652 is horizontally positioned, and the guide sleeve insertion rod 1655 is coaxially aligned with the central pull rod 504. The guide sleeve insertion cylinder 1651 drives the end of the inner guide sleeve 505 of the guide sleeve insertion rod 1655, and the shape of the guide sleeve insertion rod 1655 is consistent with the shape of the central pull rod 504, so that the inner guide sleeve 505 can be inserted into the central pull rod 504 through the guide sleeve insertion rod 1655. That is, the guide sleeve insertion rod 1655 can make the inner guide sleeve 504 move accurately and smoothly onto the central pull rod 504. Two guide sleeve insertion rods 1655 can be symmetrically provided. The guide sleeve pressing cylinder 1653 is installed on the top of the guide sleeve insertion seat 1652 and is set horizontally. The guide sleeve pressing cylinder 1653 is a dual-shaft cylinder. The piston rod of the guide sleeve pressing cylinder 1653 is connected to the guide sleeve pressing seat 1654. The guide sleeve pressing cylinder 1653 presses the inner guide sleeve 505 from the guide sleeve insertion rod 1655 to the end of the middle pull rod 504 through the guide sleeve pressing seat 1654. First, the guide sleeve insertion cylinder 1651 drives the guide sleeve insertion rod 1655 to insert into the inner guide sleeve 505 on the guide sleeve transplanting device 163, which facilitates the guide sleeve transplanting device 163 to release the inner guide sleeve 505 and simultaneously achieves the positioning of the inner guide sleeve 505. Then, the guide sleeve pressing cylinder 1653 drives the guide sleeve pressing seat 1654 to press the inner guide sleeve 505 into the interior of the middle pull rod 504 from the end of the inner guide sleeve 505. Since the guide sleeve insertion rod 1655 is movably inserted into the inner guide sleeve 505, the guide sleeve insertion rod 1655 guides the inner guide sleeve 505 to prevent the inner guide sleeve 505 from tilting when pressed in, so that the inner guide sleeve 505 can only move linearly along the axial direction. The guide sleeve insertion rod 1655 makes the inner guide sleeve 505 accurately inserted into the interior of the middle pull rod 504.

[0023] To stably push the inner guide sleeve 505 onto the middle pull rod 504, the guide sleeve insertion rod 1655 is provided with a guide sleeve pressing groove 1657, which is located at the top of the guide sleeve insertion rod 1655 and is arranged along the length of the guide sleeve insertion rod 1655; the guide sleeve pressing seat 1654 is provided with a guide sleeve pressing rod 1656, which is movably inserted into the guide sleeve pressing groove 1657 and is used to abut against the end of the inner guide sleeve 505 to push the inner guide sleeve 505 from the guide sleeve insertion rod 1655 onto the middle pull rod 504. Because the guide sleeve pressing rod 1656 is inserted into the guide sleeve pressing groove 1657, the end of the inner guide sleeve 505 can completely abut against the guide sleeve pressing rod 1656, thereby preventing the guide sleeve pressing rod 1656 from slipping on the inner guide sleeve 505, improving the reliability of the inner guide sleeve 505 pressing in, and preventing the inner guide sleeve 505 from staying on the guide sleeve insertion rod 1655. The guide sleeve pressing rod 1656 and the guide sleeve pressing seat 1654 are an integral structure and are symmetrically located at the bottom of both ends of the guide sleeve pressing seat 1654.

[0024] To further improve the accuracy of the inner guide sleeve 505 being inserted into the middle pull rod 504, a guide sleeve positioning post 1658 is provided at the end of the guide sleeve insertion rod 1655 opposite to the middle pull rod 504. The guide sleeve positioning post 1658 is used to insert into the interior of the middle pull rod 504 so that the guide sleeve insertion rod 1655 and the middle pull rod 504 are arranged coaxially, so that the outer side of the guide sleeve insertion rod 1655 and the outer side of the middle pull rod 504 can reliably connect, avoiding the position of the middle pull rod 504 from shifting, realizing the positioning of the end of the middle pull rod 504, and allowing the inner guide sleeve 505 to move smoothly onto the middle pull rod 504. Furthermore, to facilitate the insertion of the guide sleeve positioning post 1658 into the interior of the middle tie rod 504, the end of the guide sleeve positioning post 1658 is provided with a tapered guide sleeve insertion head 1659. The tapered guide sleeve insertion head 1659 has a large fault tolerance, so even if the end position of the middle tie rod 504 is deviated, the guide sleeve positioning post 1658 can still be inserted into the interior of the middle tie rod 504 to achieve docking between the two.

[0025] To provide feedback on the pressing position of the inner guide sleeve 505 and ensure the reliability of the pressing of the inner guide sleeve 505, the guide sleeve pressing device 165 also includes a guide sleeve pressing sensor 1650. The guide sleeve pressing sensor 1650 is installed on the guide sleeve pressing cylinder 1653. The guide sleeve pressing sensor 1650 is used to detect the position of the piston rod of the guide sleeve pressing cylinder 1653, thereby realizing the detection of the pressing position of the inner guide sleeve 505. If the inner guide sleeve 505 is not fully pressed in, the guide sleeve pressing sensor 1650 will not detect the piston of the guide sleeve pressing cylinder 1653 and will issue an alarm.

[0026] The guide sleeve transplanting device 163 includes a guide sleeve transplanting linear module 1631, a guide sleeve transplanting seat 1632, a guide sleeve transplanting lifting cylinder 1633, a guide sleeve transplanting gripper cylinder 1634, and a guide sleeve transplanting clamping claw 1635. The guide sleeve transplanting linear module 1631 is mounted on the guide sleeve assembly frame 168 via a guide sleeve transplanting column. The guide sleeve transplanting seat 1632 is mounted on the slide of the guide sleeve transplanting linear module 1631 and connected to the guide sleeve transplanting lifting cylinder 1633. The guide sleeve transplanting lifting cylinder 1633 is vertically arranged and is a dual-axis cylinder. The piston rod of the guide sleeve transplanting lifting cylinder 1633 is connected to the guide sleeve transplanting gripper cylinder 1634. The guide sleeve transplanting gripper cylinder 1634 is equipped with the guide sleeve transplanting clamping claw 1635, which is used to clamp the inner guide sleeve 505. The guide sleeve transplanting clamping claw 1635 is provided with a groove that matches the inner guide sleeve 505. When two guide sleeve transplanting clamping claw cylinders 1634 are used, the guide sleeve transplanting clamping claw cylinders 1634 are connected to the piston rod of the guide sleeve transplanting lifting cylinder 1633 through the guide sleeve transplanting plate 1636.

[0027] The guide sleeve transplant clamping claw 1635 clamps the inner guide sleeve 505 from the guide sleeve positioning seat 162 through the guide sleeve clamping groove 1622.

[0028] The tie rod fixing device 10 is installed on the conveyor line to fix the middle tie rod 504 and drive the middle tie rod 504 to move between various workstations, so as to realize the automatic circulation of the middle tie rod 504.

[0029] like Figure 9 As shown, the tie rod fixing device 10 can also be fixed separately to the guide sleeve assembly frame to fix the middle tie rod 504, which facilitates installation. The tie rod fixing device 10 includes a tie rod fixing base plate 101, a tie rod finger cylinder 102, and a tie rod clamp 103. The tie rod finger cylinder 102 is fixed on the tie rod fixing base plate 101, and the tie rod clamp 103 is fixed on the tie rod finger cylinder 102, and is provided with a groove that matches the middle tie rod 504.

[0030] First, the inner guide sleeve 505 is inserted into the middle pull rod 504. When assembling the large pull rod 506, the large pull rod 506 is inserted into the middle pull rod 504. Then, the end of the large pull rod 506 is inserted into the end of the inner guide sleeve 505. When the inner guide sleeve 505 abuts against the pull rod clamp 103, the large pull rod 506 is inserted into the inner guide sleeve 505, completing the assembly of the inner guide sleeve 505 and the large pull rod 506. During the assembly process, precise positioning of the inner guide sleeve 505, the middle pull rod 504, and the large pull rod 506 is not required, eliminating the need for auxiliary positioning devices, reducing the number of parts, lowering costs, and improving cycle time. The technical principle of this utility model has been described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can conceive of other specific embodiments of this utility model without creative effort, and these embodiments will all fall within the protection scope of the claims of this utility model.

Claims

1. An inner guide sleeve assembly device for a trolley case pull rod assembly, characterized in that, include: Guide sleeve feeding device (161) is used to sequentially feed out inner guide sleeves (505). A guide sleeve positioning seat (162) is provided on one side of the guide sleeve feeding device (161) for positioning the inner guide sleeve (505) fed out by the guide sleeve feeding device (161). A guide sleeve pressing device (165) is provided between the guide sleeve positioning seat (162) and the pull rod fixing device (10), and is provided with a guide sleeve insertion rod (1655) for insertion into the middle pull rod; and A guide sleeve transplanting device (163) is provided on one side of the guide sleeve positioning seat (162) and the guide sleeve pressing device (165); The guide sleeve transplanting device (163) is used to move the inner guide sleeve (505) from the guide sleeve positioning seat (162) to the end of the middle pull rod (504), and the guide sleeve pressing device (165) is used to insert the guide sleeve insertion rod (1655) into the inner guide sleeve (505) and the middle pull rod (504), and press the inner guide sleeve (505) into the middle pull rod (504).

2. The inner guide sleeve assembly device for a trolley case pull rod assembly according to claim 1, characterized in that, The guide sleeve pressing device (165) includes: The guide sleeve is inserted into the cylinder (1651); A guide sleeve insertion seat (1652) is provided on the guide sleeve insertion cylinder (1651) and connected to the guide sleeve insertion rod (1655); The guide sleeve is pressed into the cylinder (1653), which is located on the guide sleeve insertion seat (1652); and A guide sleeve press-in seat (1654) is provided on the guide sleeve press-in cylinder (1653) and is used to press the inner guide sleeve (505) from the guide sleeve insertion rod (1655) into the end of the middle pull rod (504).

3. The inner guide sleeve assembly device for a trolley case pull rod assembly according to claim 2, characterized in that, The guide sleeve insertion rod (1655) is provided with a guide sleeve pressing groove (1657). The guide sleeve press-in seat (1654) is provided with a guide sleeve press-in rod (1656), which is movably inserted into the guide sleeve press-in groove (1657) and is used to abut against the end of the inner guide sleeve (505) so that the inner guide sleeve (505) is pressed into the end of the middle pull rod (504).

4. The inner guide sleeve assembly device for a trolley case pull rod assembly according to claim 2, characterized in that, The end of the guide sleeve insertion rod (1655) is provided with a guide sleeve positioning post (1658), which is used to insert into the interior of the middle pull rod (504).

5. The inner guide sleeve assembly device for a trolley case pull rod assembly according to claim 4, characterized in that, The end of the guide sleeve positioning post (1658) is provided with a tapered guide sleeve insertion head (1659).

6. The inner guide sleeve assembly device for a trolley case pull rod assembly according to claim 2, characterized in that, The guide sleeve pressing device (165) further includes a guide sleeve pressing sensor (1650), which is mounted on the guide sleeve pressing cylinder (1653).

7. The inner guide sleeve assembly device for a trolley case pull rod assembly according to any one of claims 1 to 6, characterized in that, The guide sleeve feeding device (161) includes: The second vibratory plate (1611); and The second feeding trough (1612) is located on the second vibrating plate (1611), and one end is movably located at the feeding end of the guide sleeve positioning seat (162).

8. The inner guide sleeve assembly device for a trolley case pull rod assembly according to any one of claims 1 to 6, characterized in that, The guide sleeve transplanting device (163) includes: Guide sleeve transplanting linear module (1631); The guide sleeve transplanting seat (1632) is provided on the slide of the guide sleeve transplanting linear module (1631); A guide sleeve transplanting lifting cylinder (1633) is provided on the guide sleeve transplanting seat (1632); A guide sleeve transplanting gripper cylinder (1634) is mounted on the guide sleeve transplanting lifting cylinder (1633); and The guide sleeve transplanting clamping claw (1635) is located on the guide sleeve transplanting clamping claw cylinder (1634) and is used to clamp the inner guide sleeve (505).

9. The inner guide sleeve assembly device for a trolley case pull rod assembly according to claim 8, characterized in that, The guide sleeve positioning seat (162) is provided with a guide sleeve positioning groove (1621) and guide sleeve clamping grooves (1622) on both sides of the guide sleeve positioning groove (1621). The guide sleeve clamping grooves (1622) are connected to the guide sleeve positioning groove (1621).

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