Locking device of luggage case pull rod

Abstract

The utility model belongs to the field of luggage case accessories, particularly relates to a locking device of a luggage case pull rod, and provides the following scheme aiming at the problem that in the prior art, when maintenance is carried out, the whole pull rod needs to be detached from a luggage case, then the pull rod is separated for maintenance, and the operation is very complicated, the locking device comprises an outer rod piece and an inner rod piece, the outer rod piece comprises two outer pull rods, the two outer pull rods are both fixedly arranged in the luggage case, the inner rod piece comprises a cross rod and two inner pull rods, the two inner pull rods are located in the two outer pull rods respectively, and the two inner pull rods are fixedly communicated with the two ends of the bottom of the cross rod respectively; the telescopic locking device is used for locking the stretching and retracting of the inner pull rod and the outer pull rod, normal stretching and retracting fixing of the pull rods can be achieved so that normal use can be achieved, and during maintenance, the whole pull rod part does not need to be detached from the luggage case, and the inner pull rod can be independently pulled out to maintain the clamping part of the inner pull rod.

Description

Technical Field

[0001] This utility model relates to the field of luggage accessories technology, and in particular to a locking device for a luggage handle. Background Technology

[0002] With frequent travel and business trips, suitcases have become an important item to carry, and their convenience and durability have become the focus of consumers' attention. As an important part of suitcases, the design of the suitcase handle is directly related to the user experience.

[0003] Most luggage handles on the market have a locking mechanism located at the bottom of the inner handle. With increased daily use, this locking mechanism can malfunction, such as extending and failing to hold in place, or being unable to release or retract once secured. However, because the locking mechanism is located at the bottom of the inner handle, which is then fitted by the outer handle, which is fixed inside the luggage, repairs require removing the entire handle from the luggage and then separating it for repair, which is quite complicated.

[0004] Therefore, there is a need for a luggage handle locking device that can both extend and lock during daily use, and also allows for easy repair without removing the entire handle in case of malfunction. Utility Model Content

[0005] The purpose of this utility model is to solve the problem that the existing technology requires the entire pull rod to be removed from the suitcase and then separated for repair, which is very complicated. Therefore, a locking device for the suitcase pull rod is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A locking device for a suitcase handle includes an outer rod and an inner rod. The outer rod includes two outer pull rods, both of which are fixedly installed inside the suitcase. The inner rod includes a crossbar and two inner pull rods, each located inside the two outer pull rods and fixedly connected to both ends of the bottom of the crossbar. The device also includes a locking mechanism for locking the extension and retraction of the inner and outer pull rods, wherein the locking mechanism is respectively installed inside the two inner pull rods.

[0008] Two limiting mechanisms are provided to limit the movement of the two inner pull rods. The two limiting mechanisms are located at the top of the two outer pull rods. Each limiting mechanism includes an inner limiting cylinder and an outer sliding cylinder. The bottom end of the inner limiting cylinder is located inside the outer pull rod. The outer sliding cylinder is slidably sleeved on the outer wall of the inner limiting cylinder. A side groove is provided inside the inner limiting cylinder. An insert is slidably disposed inside the side groove. A slot is provided on the inner wall of the outer pull rod. One end of the insert slides through the inner limiting cylinder and engages with the slot.

[0009] In one possible design, the limiting mechanism further includes a vertical stop rod, with an upper inclined groove at the top of one end of the insert, the vertical stop rod being fixedly installed at the bottom of the outer slide cylinder, and the bottom end of the vertical stop rod sliding through the interior of the side groove and engaging with the upper inclined groove.

[0010] In one possible design, the limiting mechanism further includes a horizontal abutment rod, the bottom of the insert has a downward inclined groove, the bottom of the outer sliding cylinder is fixedly provided with a connecting strip, and the bottom end of the connecting strip slides through into the interior of the inner limiting cylinder, one end of the horizontal abutment rod is fixedly provided with the bottom end of the connecting strip, and the other end of the horizontal abutment rod cooperates with the downward inclined groove.

[0011] In one possible design, the limiting mechanism further includes a fixing strip, a sliding groove is provided on one side of the outer sliding cylinder, and the fixing strip is slidably disposed inside the sliding groove. A slot is provided on the outer wall of the inner limiting cylinder. One end of the fixing strip passes through the outer sliding cylinder and cooperates with the slot. A No. 3 compression spring is provided inside the sliding groove, and the two ends of the No. 3 compression spring are respectively fixedly disposed on one side inner wall of the sliding groove and one end of the fixing strip.

[0012] In one possible design, the locking mechanism includes two mounting shells, each located at the bottom end of one of the two inner pull rods, with the top of the mounting shell inside the inner pull rod. A slider is slidably mounted on the bottom inner wall of the mounting shell, with oblique grooves on both sides of the slider. A slide plate is slidably mounted inside the mounting shell, with L-shaped rods fixedly mounted on both sides of the bottom of the slide plate, one end of which is located inside the oblique groove on the same side. A second compression spring is fixedly mounted on one side of the slider, with the other end of the second compression spring fixedly mounted on the inner wall of one side of the mounting shell. A plug rod is fixedly mounted on the other side of the slider. Multiple insertion holes are provided on the outer wall of the outer pull rod, and one end of the plug rod slidably extends through to the outside of the inner pull rod and engages with the multiple insertion holes.

[0013] In one possible design, the locking mechanism further includes two connecting rods, each located inside one of the two inner pull rods. The bottom end of the connecting rod engages with the top of the slide plate. A crossbar is slidably arranged inside the crossbar, and the top end of the connecting rod extends into the interior of the crossbar and is fixedly disposed at the bottom of the crossbar. Multiple compression springs are fixedly disposed at the bottom of the crossbar, and the other ends of the multiple compression springs are fixedly disposed on the bottom inner wall of the crossbar.

[0014] In one possible design, a pressing block is fixedly provided at the top of the crossbar, and the top of the pressing block slides through to the outside of the crossbar.

[0015] In this application, during actual use, pressing the pressing block causes the horizontal bar to move downwards, which in turn causes the connecting rod to move downwards. The bottom end of the connecting rod then presses against the sliding plate, causing it to move downwards. The sliding plate then causes the L-shaped rod to move downwards. At this time, one end of the L-shaped rod will push the slider to one side through the inclined groove. The slider will then move the insertion rod, causing one end of the insertion rod to disengage from the insertion hole. This releases the fixation between the inner and outer pull rods, allowing them to be pulled out freely. Afterwards, the pressing block, horizontal bar, and connecting rod are reset by the first compression spring, while the insertion rod and slider are reset by the second compression spring. Once one end of the insertion rod is re-engaged into the corresponding insertion hole, the fixation is restored.

[0016] When the snap-fit ​​end inside the housing fails to retract properly due to prolonged and frequent use, simply press the fixing strip inward to disengage one end from the slot, thus releasing the fixation between the inner limiting cylinder and the outer sliding cylinder. Then, move the outer sliding cylinder upward, which will drive the horizontal abutment rod upward via the connecting strip. One end of the horizontal abutment rod will touch the lower inclined groove, pushing the insert inward to release the fixation between the inner limiting cylinder and the outer pull rod. At this point, the inner limiting cylinder can be pulled outward to release the restriction on the inner pull rod, allowing the inner rod to be pulled out directly for easy maintenance. When it is necessary to reinstall the limiting mechanism, simply insert the inner limiting cylinder into the outer pull rod and move the outer sliding cylinder downward. The outer sliding cylinder will drive the vertical abutment rod to move, causing the bottom end of the vertical abutment rod to touch the upper inclined groove, thus pushing the insert outward and re-inserting it into the slot to fix it to the outer pull rod.

[0017] In this utility model, the locking device for a suitcase pull rod can release the fixation between the inner and outer pull rods by pressing the outer pressing block through the locking mechanism, thereby realizing the normal extension and retraction of the pull rod. Then, by releasing the hand, the spring will automatically reset and fix it again.

[0018] In this utility model, the locking device for a suitcase pull rod can limit the inner pull rod inside the outer pull rod through a limiting mechanism, preventing it from being fully pulled out, thus ensuring normal use. When maintenance is required, the limiting mechanism itself can be directly removed, thereby releasing the limitation on the inner pull rod and allowing it to be pulled out directly for internal maintenance operations.

[0019] In this invention, the pull rod can be extended and fixed normally during use, thus enabling normal operation. Furthermore, during maintenance, it is not necessary to remove the entire pull rod from the suitcase; the inner pull rod can be pulled out separately to repair its locking part, thereby greatly reducing the tediousness and difficulty of maintenance. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main structure of a locking device for a suitcase handle according to the present invention;

[0021] Figure 2 This is an exploded structural diagram of a locking device for a suitcase handle according to the present invention.

[0022] Figure 3 This is a cross-sectional structural diagram of a locking device for a suitcase handle according to the present invention;

[0023] Figure 4 This is a front view sectional view of the locking device limiting mechanism for a suitcase pull rod proposed in this utility model.

[0024] Figure 5 This is a side cross-sectional view of the locking device limiting mechanism for a suitcase pull rod proposed in this utility model.

[0025] Figure 6 This is a top cross-sectional view of the locking device limiting mechanism for a suitcase handle proposed in this utility model.

[0026] In the diagram: 1. Horizontal bar; 2. Pressing block; 3. Inner pull rod; 4. Outer pull rod; 5. Limiting mechanism; 6. Horizontal bar; 7. Connecting rod; 8. First compression spring; 9. Slide plate; 10. Insert rod; 11. Slanted slide groove; 12. Slider; 13. Mounting shell; 14. L-shaped rod; 15. Second compression spring; 16. Inner limiting cylinder; 17. Outer slide cylinder; 18. Side groove; 19. Vertical abutment rod; 20. Upper slanted groove; 21. Insert strip; 22. Horizontal abutment rod; 23. Lower slanted groove; 24. Connecting strip; 25. Fixing strip; 26. Third compression spring; 27. Sliding groove; 28. Card slot; 29. ​​Insertion hole. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Example 1

[0029] Reference Figure 1-2 A locking device includes an outer rod and an inner rod. The outer rod includes two outer pull rods 4, both of which are fixed inside the suitcase by screws or other fasteners. The inner rod includes a crossbar 1 and two inner pull rods 3, which are located inside the two outer pull rods 4 respectively. The two inner pull rods 3 are fixedly connected to both ends of the bottom of the crossbar 1 by welding or screws. The crossbar 1 can be assembled from two half-shells by screws or other means.

[0030] It also includes a locking mechanism for locking the inner tie rod 3 and the outer tie rod 4, so that it can be stretched to any length for fixing, and a limiting mechanism 5 for limiting the inner tie rod 3 within the outer tie rod 4. There are two limiting mechanisms 5, which are located at the top of the two outer tie rods 4 respectively.

[0031] Reference Figure 2-3 The locking mechanism is respectively located inside the two inner pull rods 3, including two mounting shells 13. The top of the mounting shell 13 is located inside the inner pull rod 3 and is fixed to the bottom end of the inner pull rod 3 by means of glue or the like. A slider 12 is slidably arranged on the bottom inner wall of the mounting shell 13. Both sides of the slider 12 are provided with inclined sliding grooves 11. A slide plate 9 is also slidably arranged inside the mounting shell 13. Both sides of the bottom of the slide plate 9 are fixedly provided with L-shaped rods 14. One end of the L-shaped rod 14 is located inside the inclined sliding groove 11 on the same side. When the slide plate 9 moves downward, it will drive the L-shaped rod 14 to move downward, so that one end of it will drive the slider 12 to move through the inclined sliding groove 11. A second compression spring 15 is fixedly arranged on one side of the slider 12, and the other end of the second compression spring 15 is fixedly arranged on the inner wall of one side of the mounting shell 13 for the slider 12 to reset after movement. On the other side of the slider 12, a plug rod 10 is fixedly installed. The outer wall of the outer pull rod 4 has multiple insertion holes 29. One end of the plug rod 10 can slide through to the outside of the inner pull rod 3 and cooperate with the multiple insertion holes 29.

[0032] Furthermore, the locking mechanism also includes two connecting rods 7, located inside the two inner pull rods 3 respectively. The bottom end of the connecting rod 7 engages with the top of the slide plate 9, while the top end extends into the interior of the crossbar 1 and is fixedly mounted on the bottom of the crossbar 6. The crossbar 6 is slidably mounted inside the crossbar 1, and multiple compression springs 8 are fixedly mounted on its bottom, with the other end of each compression spring 8 fixedly mounted on the bottom inner wall of the crossbar 1. A pressing block 2 is also fixedly mounted on the top of the crossbar 6, and the top of the pressing block 2 can slide through to the outside of the crossbar 1.

[0033] Specifically, pressing the pressing block 2 causes the connecting rod 7 to move downwards via the horizontal bar 6. The bottom end of the connecting rod 7 will abut against the sliding plate 9, causing it to move downwards. The sliding plate 9 then causes the L-shaped rod 14 to move downwards. At this time, one end of the L-shaped rod 14 will push the slider 12 to one side via the inclined slide groove 11. The slider 12 will move the insertion rod 10, causing one end of the insertion rod 10 to disengage from the insertion hole 29. This releases the fixation between the inner pull rod 3 and the outer pull rod 4, allowing them to be pulled out freely. Afterwards, the pressing block 2, the horizontal bar 6, and the connecting rod 7 are reset by the first compression spring 8, while the insertion rod 10 and the slider 12 are reset by the second compression spring 15. When one end of the insertion rod 10 is re-engaged into the corresponding insertion hole 29, it can be re-fixed.

[0034] Reference Figure 4-5 The limiting mechanism 5 includes an inner limiting cylinder 16 and an outer sliding cylinder 17. The bottom end of the inner limiting cylinder 16 is located inside the outer pull rod 4, and the outer sliding cylinder 17 is slidably sleeved on the outer wall of the inner limiting cylinder 16. A side groove 18 is provided inside the inner limiting cylinder 16, and an insert 21 is slidably arranged inside the side groove 18. A slot is provided on the inner wall of the outer pull rod 4. One end of the insert 21 can slide through the inner limiting cylinder 16 and cooperate with the slot, so that the inner limiting cylinder 16 is installed at one end of the outer pull rod 4, and the inner limiting cylinder 16 is sleeved on the outer wall of the inner pull rod 3. The mounting shell 13 installed at the bottom end of the inner pull rod 3 is provided with an extension edge. When stretched to the maximum length, the extension edge of the mounting shell 13 will touch the inner limiting cylinder 16, preventing it from extending or retracting further.

[0035] Furthermore, the limiting mechanism 5 also includes a vertical stop rod 19 and a horizontal stop rod 22. The top of one end of the insert 21 is provided with an upper inclined groove 20. The vertical stop rod 19 is fixedly installed at the bottom of the outer slide cylinder 17, and the bottom end of the vertical stop rod 19 slides through into the interior of the side groove 18 and cooperates with the upper inclined groove 20.

[0036] The bottom of the insert 21 is provided with a downward inclined groove 23. The bottom of the outer sliding cylinder 17 is fixedly provided with a connecting strip 24. The bottom end of the connecting strip 24 slides through into the interior of the inner limiting cylinder 16. One end of the horizontal abutment rod 22 is fixedly provided with the bottom end of the connecting strip 24, and the other end cooperates with the downward inclined groove 23.

[0037] Specifically, when the snap-fit ​​end inside the mounting shell 13 cannot retract and snap properly due to prolonged and frequent use, the outer slide cylinder 17 is moved upward. The outer slide cylinder 17 will drive the horizontal abutment rod 22 upward through the connecting strip 24. One end of the horizontal abutment rod 22 will touch the lower inclined groove 23, thereby pushing the insert 21 inward, thus releasing the fixation between the inner limiting cylinder 16 and the outer pull rod 4. At this time, the inner limiting cylinder 16 can be pulled outward, thereby releasing the restriction on the inner pull rod 3, so that the inner rod can be directly pulled out for easy maintenance. When it is necessary to reinstall the limiting mechanism 5, simply insert the inner limiting cylinder 16 into the interior of the outer pull rod 4, and then move the outer slide cylinder 17 downward. The outer slide cylinder 17 will drive the vertical abutment rod 19 to move, so that the bottom end of the vertical abutment rod 19 touches the upper inclined groove 20, thereby pushing the insert 21 outward, so that it is re-inserted into the slot and fixed to the outer pull rod 4.

[0038] When in use, the pull rod can be extended and fixed normally, so it can be used normally. When repairing, there is no need to remove the entire pull rod from the suitcase. The inner pull rod 3 can be pulled out separately to repair its locking part, which greatly reduces the tediousness and difficulty of repair.

[0039] This application can be used in the field of luggage accessories, or in other fields applicable to this application.

[0040] Example 2

[0041] refer to Figure 6 An improvement upon Embodiment 1: A locking device for a suitcase handle, applied in the field of suitcase accessories. To fix the position of the outer slide cylinder 17 and prevent accidental activation, the limiting mechanism 5 further includes a fixing strip 25. A sliding groove 27 is provided on one side of the outer slide cylinder 17, and the fixing strip 25 is slidably disposed inside the sliding groove 27. A slot 28 is provided on the outer wall of the inner limiting cylinder 16, and one end of the fixing strip 25 can pass through the outer slide cylinder 17 and cooperate with the slot 28.

[0042] The sliding groove 27 is also equipped with a No. 3 compression spring 26. The two ends of the No. 3 compression spring 26 are respectively fixed to one side of the inner wall of the sliding groove 27 and one end of the fixing strip 25 to keep the fixing strip 25 in its reset position.

[0043] Specifically, pressing the fixing strip 25 inward causes one end of the fixing strip 25 to disengage from the inside of the slot 28, thereby releasing the fixation between the inner limiting cylinder 16 and the outer sliding cylinder 17, thus ensuring that the fixation between the two will not be accidentally released due to accidental contact with the outer sliding cylinder 17 during daily use.

[0044] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0045] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A locking device for a suitcase handle, comprising: The system comprises an outer rod and an inner rod, wherein the outer rod includes two outer pull rods (4), both of which are fixedly installed inside the suitcase; the inner rod includes a crossbar (1) and two inner pull rods (3), the two inner pull rods (3) being located inside the two outer pull rods (4), and the two inner pull rods (3) being fixedly connected to the two ends of the bottom of the crossbar (1); the system is characterized by further comprising: A locking mechanism is used to lock the extension and retraction of the inner tie rod (3) and the outer tie rod (4), and the locking mechanism is respectively disposed inside the two inner tie rods (3); Two limiting mechanisms (5) are used to limit the movement of the two inner pull rods (3). The two limiting mechanisms (5) are located at the top of the two outer pull rods (4). The limiting mechanism (5) includes an inner limiting cylinder (16) and an outer sliding cylinder (17). The bottom end of the inner limiting cylinder (16) is located inside the outer pull rod (4). The outer sliding cylinder (17) is slidably sleeved on the outer wall of the inner limiting cylinder (16). A side groove (18) is opened inside the inner limiting cylinder (16). An insert (21) is slidably arranged inside the side groove (18). A slot is opened on the inner wall of the outer pull rod (4). One end of the insert (21) slides through the inner limiting cylinder (16) and cooperates with the slot.

2. The locking device for a suitcase handle according to claim 1, characterized in that, The limiting mechanism (5) also includes a vertical abutment rod (19). The top of one end of the insert (21) is provided with an upper inclined groove (20). The vertical abutment rod (19) is fixedly installed at the bottom of the outer slide cylinder (17), and the bottom end of the vertical abutment rod (19) slides through into the interior of the side groove (18) and cooperates with the upper inclined groove (20).

3. The locking device for a suitcase handle according to claim 2, characterized in that, The limiting mechanism (5) also includes a horizontal abutment rod (22), the bottom of the insert (21) is provided with a lower inclined groove (23), the bottom of the outer sliding cylinder (17) is fixedly provided with a connecting strip (24), and the bottom end of the connecting strip (24) slides through into the interior of the inner limiting cylinder (16). One end of the horizontal abutment rod (22) is fixedly provided with the bottom end of the connecting strip (24), and the other end of the horizontal abutment rod (22) cooperates with the lower inclined groove (23).

4. A locking device for a suitcase handle according to claim 3, characterized in that, The limiting mechanism (5) also includes a fixing strip (25). A sliding groove (27) is provided on one side of the outer sliding cylinder (17), and the fixing strip (25) is slidably disposed inside the sliding groove (27). A slot (28) is provided on the outer wall of the inner limiting cylinder (16). One end of the fixing strip (25) passes through the outer sliding cylinder (17) and cooperates with the slot (28). A third compression spring (26) is provided inside the sliding groove (27), and the two ends of the third compression spring (26) are respectively fixedly disposed on one side of the inner wall of the sliding groove (27) and one end of the fixing strip (25).

5. A locking device for a suitcase handle according to claim 1, characterized in that, The locking mechanism includes two mounting shells (13), which are located at the bottom ends of two inner pull rods (3), with the top of the mounting shells (13) inside the inner pull rods (3). A slider (12) is slidably mounted on the bottom inner wall of each mounting shell (13), and inclined grooves (11) are provided on both sides of the slider (12). A sliding plate (9) is slidably mounted inside the mounting shell (13), and L-shaped rods (14) are fixedly mounted on both sides of the bottom of the sliding plate (9). One end of the L-shaped rod (14) is located inside the inclined groove (11) on the same side. A second compression spring (15) is fixedly installed on one side of the slider (12), and the other end of the second compression spring (15) is fixedly installed on the inner wall of one side of the mounting shell (13). A plug rod (10) is fixedly installed on the other side of the slider (12). Multiple insertion holes (29) are opened on the outer wall of the outer pull rod (4). One end of the plug rod (10) slides through to the outside of the inner pull rod (3) and cooperates with the multiple insertion holes (29).

6. A locking device for a suitcase handle according to claim 5, characterized in that, The locking mechanism also includes two connecting rods (7), which are located inside the two inner pull rods (3). The bottom end of the connecting rod (7) is engaged with the top of the slide plate (9). A horizontal bar (6) is slidably arranged inside the crossbar (1), and the top end of the connecting rod (7) extends into the interior of the crossbar (1) and is fixedly arranged at the bottom of the horizontal bar (6). Multiple compression springs (8) are fixedly arranged at the bottom of the horizontal bar (6), and the other end of the multiple compression springs (8) is fixedly arranged on the bottom inner wall of the crossbar (1).

7. A locking device for a suitcase handle according to claim 6, characterized in that, A pressing block (2) is fixedly provided at the top of the horizontal bar (6), and the top of the pressing block (2) slides through to the outside of the horizontal bar (1).

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