Luggage case pull rod assembly and bayonet lock mechanism

Abstract

The utility model discloses a luggage case pull rod assembly and a bayonet lock mechanism, and belongs to the technical field of luggage cases. The pull rod assembly comprises an outer rod connected to the sliding rail in a sliding mode and an inner rod arranged in the outer rod in a sleeved mode, and a handle is arranged at the top end of the inner rod. And the outer rod and the sliding rail as well as the inner rod and the outer rod are respectively locked through a bayonet lock mechanism. The bayonet lock mechanism comprises a bayonet lock seat, a bayonet lock ejected by an elastic component to be inserted into the bayonet lock hole, and an unlocking pin for unlocking; the bayonet lock is provided with an unlocking groove with a first unlocking slope, and the bottom of the unlocking pin is provided with a second unlocking slope corresponding to the unlocking groove. The unlocking push rod can be driven to downwards press an unlocking pin of the inner rod bayonet lock mechanism by pressing a key on the handle, so that the bayonet lock retracts to unlock the inner rod; when the inner rod retracts, the tail end of the inner rod presses down an unlocking pin of the outer rod clamping pin mechanism, and then locking of the outer rod is relieved. The pull rod assembly and the bayonet lock mechanism provided by the utility model are stable and reliable, and can improve the reliability and the safety of the luggage case.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of luggage pull rod assemblies and latch mechanism, belong to luggage technical field. BACKGROUND

[0002] Luggage is an important tool for modern travel, and its core function is to achieve convenient movement through the built-in pull rod assembly. The pull rod assembly is usually made of aluminum alloy or carbon steel material, including telescopic multi-section rod body, handle and locking device. The locking device realizes the fixation and adjustment of the length of the pull rod through spring buckle or button trigger type clamping system, to ensure that the user remains stable stress during pushing or dragging.

[0003] However, the unlocking mechanism of the locking device in the existing pull rod assembly is unreliable, and the locking state may be released in the force moment, causing the pull rod to suddenly retract. This sudden retraction is particularly dangerous in scenarios such as going up and down stairs or quick turning, which may cause the user to lose balance and fall, posing a safety hazard to the elderly and those carrying heavy objects. SUMMARY

[0004] The utility model aims to provide a kind of luggage pull rod assemblies and latch mechanism, improve the reliability and safety of pull rod assembly.

[0005] To achieve the above purpose, the technical scheme of the utility model is:

[0006] The luggage pull rod assembly includes an outer rod and an inner rod. The inner rod is arranged in the outer rod. The inner rod head end is provided with a handle. The outer rod is slidingly connected to a slide rail. The outer rod and the slide rail are both provided with a latch hole. The inner rod and the outer rod are both provided with a latch mechanism. The inner rod latch mechanism is locked in the latch hole of the outer rod. The outer rod latch mechanism is locked in the latch hole of the slide rail.

[0007] The latch mechanism includes a latch seat provided with a latch slot. The latch slides back and forth along the latch slot. The latch side is provided with an elastic component. The elastic component pushes the latch out and locks it in the latch hole. The latch is provided with an unlocking slot with a first unlocking slope. An unlocking pin is arranged above the latch. The bottom of the unlocking pin has a second unlocking slope. The first unlocking slope corresponds to the second unlocking slope. The unlocking pin is arranged in an unlocking pin hole and slides along the unlocking pin hole. The unlocking pin is provided with an unlocking reset component that drives the unlocking pin to move upward and reset.

[0008] The inner rod is provided with an unlocking push rod. A key block is arranged on the handle. The unlocking push rod is connected to the key block. The key block drives the unlocking push rod, which pushes the unlocking pin of the inner rod latch mechanism to unlock. The tail end of the inner rod pushes the unlocking pin of the outer rod latch mechanism to unlock.

[0009] The key block drives the unlocking push rod to push the unlocking pin, the unlocking pin slides along the unlocking pin hole, the second unlocking slope presses the first unlocking slope, the locking pin slides along the locking pin slot, the locking pin is separated from the locking pin hole, and the unlocking of the locking pin mechanism is realized.

[0010] The unlocking reset component is a spring, the unlocking reset component is sleeved on the unlocking pin, the unlocking pin is provided with an unlocking pin push block, and the unlocking reset component is supported between the unlocking pin push block and the locking pin seat.

[0011] In order to avoid that the unlocking pin is separated from the locking pin seat, the locking pin seat is provided with an anti-disengagement pin, the unlocking pin is provided with an anti-disengagement slot hole, the anti-disengagement pin is located in the anti-disengagement slot hole, and when the unlocking pin slides along the unlocking pin hole, the anti-disengagement pin is displaced in the anti-disengagement slot hole.

[0012] In order to adjust the length of the pull rod, a plurality of locking pin holes are arranged on the outer rod, and the plurality of locking pin holes are sequentially arranged along the outer rod.

[0013] The luggage pull rod locking pin mechanism comprises a locking pin seat, the locking pin seat is provided with a locking pin slot, the locking pin reciprocally slides along the locking pin slot, the locking pin is provided with an elastic component, the elastic component pushes the locking pin out and locks the locking pin in the locking pin hole, the locking pin is provided with an unlocking slot, the unlocking slot has a first unlocking slope, the locking pin is provided with an unlocking pin above, the bottom of the unlocking pin has a second unlocking slope, the first unlocking slope corresponds to the second unlocking slope, the unlocking pin is arranged in the unlocking pin hole, the unlocking pin slides along the unlocking pin hole, the unlocking pin is provided with an unlocking reset component, and the unlocking reset component drives the unlocking pin to move upward and reset.

[0014] Specifically, the unlocking reset component is a spring.

[0015] In order to avoid that the unlocking pin is separated from the locking pin seat, the locking pin seat is provided with an anti-disengagement pin, the unlocking pin is provided with an anti-disengagement slot hole, the anti-disengagement pin is located in the anti-disengagement slot hole, and when the unlocking pin slides along the unlocking pin hole, the anti-disengagement pin is displaced in the anti-disengagement slot hole.

[0016] The pull rod assembly and the locking pin mechanism provided by the utility model are stable and reliable, and the reliability and safety of the luggage can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model will be explained further in detail in combination with the drawings and specific embodiments.

[0018] Figure 1 It is a schematic view of the pull rod assembly.

[0019] Figure 2This is a schematic diagram of the locking mechanism for the inner and outer rods.

[0020] Figure 3 This is a schematic diagram of the handle, inner rod, and outer rod structure.

[0021] Figure 4 This is a schematic diagram of the locking mechanism of the inner rod.

[0022] Figure 5 This is a schematic diagram of the cross-sectional structure of the locking mechanism of the inner rod.

[0023] Figure 6 This is a schematic diagram of the cross-sectional structure of the locking mechanism for the outer rod.

[0024] Figure 7 This is a schematic diagram of the button block and unlocking push rod structure. Detailed Implementation

[0025] like Figures 1-7 As shown, the luggage handle assembly includes an outer rod 2 and an inner rod 3. The inner rod 3 is located inside the outer rod 2, and a handle 4 is provided at the head end of the inner rod 3. The outer rod 2 is slidably connected to a slide rail 1. A slide rail locking hole (not shown in the figure) is provided at the top end of the slide rail 1. The outer rod 2 is provided with multiple outer rod locking holes 21, which are arranged sequentially along the outer rod 2 (at different heights). Specifically, there are three outer rod locking holes 21, one of which is located in the middle of the outer rod 2, and the other two are located at the two ends of the outer rod 2 respectively. The locking pins of the locking mechanism of the inner rod 3 are locked in the outer rod locking holes respectively, realizing three-level adjustment of the handle height.

[0026] Both the tail end of the outer rod 2 and the tail end of the inner rod 3 are provided with locking mechanisms. The locking pin of the locking mechanism on the outer rod 2 is locked in the sliding rail locking pin hole, and the locking pin 61 of the locking mechanism on the inner rod 3 is locked in one of the three outer rod locking pin holes 21.

[0027] Specifically, such as Figures 4-5 As shown, the locking mechanism of the inner rod 3 includes an inner rod locking seat 6, which is provided with an inner rod locking groove 62. The locking pin 61 slides back and forth along the inner rod locking groove 62. A spring 63 (or other type of elastic reset component) is provided at the tail end of the locking pin 61. The spring 63 pushes the head end of the locking pin 61 out of the inner rod locking groove 62, and the pushed-out locking pin 61 is locked in the outer rod locking hole 21.

[0028] An inner rod unlocking groove 612 is provided on the locking pin 61. The inner rod unlocking groove 612 has an inner rod first unlocking inclined surface 611. An inner rod unlocking pin 64 is provided above the locking pin 61. The bottom of the inner rod unlocking pin 64 has an inner rod second unlocking inclined surface 641. The inner rod second unlocking inclined surface 641 corresponds to the inner rod first unlocking inclined surface 611. The inner rod second unlocking inclined surface 641 moves downward to push the inner rod first unlocking inclined surface 611. Similarly, the inner rod first unlocking inclined surface 611 moves to push the inner rod second unlocking inclined surface 641, causing the inner rod unlocking pin 64 to move upward. The inner rod unlocking pin 64 is set in the inner rod unlocking pin hole 65. The inner rod unlocking pin 64 slides along the inner rod unlocking pin hole 65. The inner rod second unlocking inclined surface 641 presses against the inner rod first unlocking inclined surface 611. The locking pin 61 slides along the inner rod locking groove 62. The head end of the locking pin 61 disengages from the outer rod locking pin hole 21, unlocking the inner rod 3. The inner rod 3 can then extend into the outer rod 2. At this moment, the locking pin 61 moves, and the spring 63 is compressed.

[0029] To enable the inner rod unlocking pin to automatically reset, an inner rod unlocking pin pusher 66 is provided at the head end of the inner rod unlocking pin 64. A spring 67 (or other type of elastic component) is provided between the inner rod unlocking pin pusher 66 and the inner rod locking pin seat 6. The spring is sleeved on the inner rod unlocking pin 64. The spring drives the inner rod unlocking pin 64 to move upward and reset. The second unlocking inclined surface 641 of the inner rod disengages from the first unlocking inclined surface 611. The spring 63 pushes out the head end of the locking pin 61, and the locking pin 61 resets and locks in the outer rod locking pin hole 21.

[0030] To prevent the inner rod unlocking pin from disengaging from the inner rod retaining pin seat, the inner rod retaining pin seat is provided with an inner rod anti-disengagement pin 68, and the inner rod unlocking pin 64 is provided with an inner rod anti-disengagement strip hole 69. The inner rod anti-disengagement pin 68 is located inside the inner rod anti-disengagement strip hole 69. When the inner rod unlocking pin 64 is displaced, the inner rod anti-disengagement pin 68 is displaced within the inner rod anti-disengagement strip hole 69.

[0031] Similarly, such as Figure 6 As shown, the locking mechanism of the outer rod 3 includes an outer rod locking seat 7, the outer rod locking seat 7 is provided with an outer rod locking groove 72, the locking pin 71 slides back and forth along the outer rod locking groove 72, the tail end of the locking pin 71 is provided with a spring (or other type of elastic reset component), the outer rod elastic component pushes the head end of the locking pin 71 out, and the locking pin 71 is locked in the sliding rail locking hole.

[0032] The card pin 71 is provided with an outer rod unlocking slot 711, which has an outer rod first unlocking slope 712. The card pin 71 is provided with an outer rod unlocking pin 74, the bottom of which has an outer rod second unlocking slope 741 corresponding to the outer rod first unlocking slope 712. The outer rod second unlocking slope 741 moves downward to push the outer rod first unlocking slope 712. Similarly, the outer rod first unlocking slope 712 moves to push the outer rod second unlocking slope 741 to move upward. The outer rod unlocking pin 74 is arranged in an outer rod unlocking pin hole 75 and slides along the outer rod unlocking pin hole 75. The outer rod second unlocking slope 741 presses the outer rod first unlocking slope 712. The card pin 71 slides along the outer rod card pin slot 72. The head end of the card pin 71 is separated from the slide rail card pin hole, the outer rod 2 is unlocked, and the outer rod 2 can slide along the slide rail 1. At this time, the card pin 71 moves, and the tail end spring of the card pin 71 is compressed.

[0033] In order to automatically reset the outer rod unlocking pin, the head end of the outer rod unlocking pin 74 is provided with an outer rod unlocking pin push block 76. A spring (or other type of elastic component) is arranged between the outer rod unlocking pin push block 76 and the outer rod card pin seat. The spring is sleeved on the outer rod unlocking pin 74 and drives the outer rod unlocking pin 74 to move upward to reset. The outer rod elastic component pushes the head end of the card pin 71 out, and the card pin 71 is reset and locked in the rail card pin hole.

[0034] In order to avoid the outer rod unlocking pin from being separated from the outer rod card pin seat, the outer rod card pin seat is provided with an outer rod anti-disengagement pin. The outer rod unlocking pin 74 is provided with an outer rod anti-disengagement strip hole 79. The outer rod anti-disengagement pin is located in the outer rod anti-disengagement strip hole 79. When the outer rod unlocking pin 74 is displaced, the outer rod anti-disengagement pin is displaced in the outer rod anti-disengagement strip hole 79.

[0035] The outer rod card pin seat 7 is provided with a sliding block 9, which is slidingly connected to the slide rail 1.

[0036] The handle 4 is connected to the head end of the inner rod 3. The handle 4 is provided with a handle cover 41. A key block 42 is arranged between the handle 4 and the handle cover 41. The key block 42 is movable between the handle 4 and the handle cover 41. The top of the key block 42 is provided with a key 47. The top of the handle cover 41 is provided with a key hole 471. The key 47 is located in the key hole 471.

[0037] The key block 42 is provided with two (or more) key guide holes 43, which are respectively arranged on both sides of the key 47. Key guide columns are respectively arranged in the key guide holes 43. The key guide columns are connected to the handle cover 41. When the key 47 is pressed, the key block 42 moves along the key guide columns 43. The handle 4 is provided with a handle seat 5, which is arranged on the box body.

[0038] The inner rod 3 is provided with an unlocking push rod 44 connected to the key block 42, which is above the unlocking push block 66. Pressing the key 47, the key block 42 drives the unlocking push rod 44, which pushes the inner rod unlocking pin 64 on the inner rod pin seat 6, and the inner rod second unlocking slope 641 presses the inner rod first unlocking slope 611. The pin 61 is separated from the outer rod pin hole 21, the inner rod 3 is unlocked, and the inner rod 3 can slide along the outer rod 2. The inner rod unlocking push rod 44 is reset, the spring 67 drives the inner rod unlocking pin 64 to move upward, the inner rod second unlocking slope 641 is separated from the inner rod first unlocking slope 611, and the inner rod elastic component 63 pushes the pin 61 head out of the outer rod pin hole 21.

[0039] When the inner rod pin seat 6 at the tail end of the inner rod 3 moves to the outer rod pin seat 7, the inner rod pin seat 6 pushes the outer rod unlocking pin 76 on the outer rod pin seat 7, the outer rod second unlocking slope 741 presses the outer rod first unlocking slope 712, the outer rod pin 71 of the outer rod pin seat is separated from the slide rail pin hole, the outer rod 2 is unlocked, and the outer rod 2 can move along the slide rail 2. The outer rod unlocking pin 76 is separated from the inner rod pin seat 6, the spring drives the outer rod unlocking pin 74 to move upward, the outer rod second unlocking slope 741 is separated from the outer rod first unlocking slope 712, and the outer rod elastic component pushes the pin 71 head out of the track pin hole.

[0040] The above embodiments do not limit the utility model in any way, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the utility model.

Claims

1. A luggage trolley handle assembly comprising an outer tube and an inner tube, the inner tube being disposed within the outer tube, the inner tube having a handle provided at a head end thereof, characterised in that: The outer rod is slidingly connected to the slide rail, and the outer rod and the slide rail are provided with pin holes. The pin mechanism comprises a pin seat provided with a pin slot, the pin reciprocally slides along the pin slot, and the pin is provided with an elastic component which pushes the pin head out of the pin slot and locks it in the pin hole; the pin is provided with an unlocking slot having a first unlocking slope, and the pin is provided with an unlocking pin having a second unlocking slope corresponding to the first unlocking slope, the unlocking pin is arranged in an unlocking pin hole and slides along the unlocking pin hole, and the unlocking pin is provided with an unlocking reset component which drives the unlocking pin to move upward and reset; the inner rod is provided with an unlocking push rod, the handle is provided with a key block, the unlocking push rod is connected to the key block, the key block drives the unlocking push rod, and the unlocking push rod pushes the unlocking pin of the inner rod pin mechanism to unlock; the tail end of the inner rod pushes the unlocking pin of the outer rod pin mechanism to unlock.

2. The luggage handlebar assembly of claim 1, wherein: The unlocking reset component is a spring.

3. The luggage handlebar assembly of claim 2, wherein: The spring is sleeved on the unlocking pin, the unlocking pin is provided with an unlocking pin push block, and the spring is supported between the unlocking pin push block and the pin seat.

4. The luggage handlebar assembly of claim 1, wherein: The pin seat is provided with an anti-extraction pin, the unlocking pin is provided with an anti-extraction slot hole, the anti-extraction pin is located in the anti-extraction slot hole, and when the unlocking pin slides along the unlocking pin hole, the anti-extraction pin is displaced in the anti-extraction slot hole.

5. The luggage handlebar assembly of claim 1, wherein: The outer rod is provided with a plurality of pin holes arranged in sequence along the outer rod.

6. A luggage trolley catch mechanism characterised in that The pin mechanism comprises a pin seat provided with a pin slot, the pin reciprocally slides along the pin slot, and the pin is provided with an elastic component which pushes the pin head out of the pin slot and locks it in the pin hole; the pin is provided with an unlocking slot having a first unlocking slope, and the pin is provided with an unlocking pin having a second unlocking slope corresponding to the first unlocking slope, the unlocking pin is arranged in an unlocking pin hole and slides along the unlocking pin hole, and the unlocking pin is provided with an unlocking reset component which drives the unlocking pin to move upward and reset.

7. The luggage trolley catch mechanism of claim 6, wherein: The unlocking reset component is a spring.

8. The luggage trolley catch mechanism of claim 6, wherein: The pin seat is provided with an anti-extraction pin, the unlocking pin is provided with an anti-extraction slot hole, the anti-extraction pin is located in the anti-extraction slot hole, and when the unlocking pin slides along the unlocking pin hole, the anti-extraction pin is displaced in the anti-extraction slot hole.

Images