A luggage handle

Abstract

A luggage handle, comprising a handle part and a connecting part; the connecting part is embedded in both ends of the handle part; the connecting part comprises a fixed shell, a pull rod, a spring group and a base assembly arranged in the fixed shell; one end of the pull rod is connected with the handle part; the other end is connected with the base assembly; the upper end of the spring group is fixed on the inner wall of the fixed shell, and the lower end is detachably mounted on the base assembly; by pulling the handle part upward, the pull rod is driven to move upward, so that the spring group is compressed from bottom to top to realize elastic stretching. The elastic stretching luggage handle of the present application, compared with the traditional stretching handle made of rubber material, uses rigid plastic, stainless steel and other materials that are not easy to wear and tear, greatly reduces the probability of handle aging and damage, and at the same time ensures the strength requirement in the stretching process; a plurality of springs are used to realize the stretching and retracting function, fully ensuring the comfortable feeling in the lifting process.

Description

Technical Field

[0001] This invention relates to the field of luggage components technology, specifically to a luggage handle. Background Technology

[0002] Handles for bags and luggage typically need to withstand significant tensile strength. Therefore, they are often designed and manufactured using rigid materials, with structures similar to those described in patent CN201810829218.6 – a weighing handle for bags and luggage, employing hinges to achieve rotational connections between rigid components. Some bag handles, however, are made of materials like rubber or resin for a better feel. While these materials have lower tensile strength, they are softer and more comfortable to hold, and can be made into "retractable handles," as seen in patent CN201920642683.9 – a telescopic bag handle. Existing retractable handles refer to handles with connecting components between the handle body and the two end fixings. When the handle body is pulled up, the connecting components allow the handle body to extend appropriately; when the handle body is lowered, the connecting components return to their original length or position. The most common approach is to have two elongated grooves at both ends of the rubber handle body, which are then fixed to the end fixings, allowing the rubber handle body a certain range of motion. The disadvantage of this structure is that the retraction relies entirely on the elasticity of the rubber. As the rubber ages during use, the retraction effect will deteriorate or even cease.

[0003] Therefore, while rigid bag handles in the existing technology have strong load-bearing capacity, they have poor feel and are easy to hurt hands. Furthermore, long-term wear between rigid structural components also affects the service life. Handles made of materials such as rubber and resin are soft and protect the hands, but these materials are prone to aging and deformation, have poor load-bearing capacity, and their structural design is not reasonable enough, making them easy to be damaged.

[0004] In addition, some manufacturers use only torsion springs at the handle connection in order to reduce costs. Although the handle can still return to its original position, it does so very quickly, resulting in a "snap" sound that affects the user experience. Furthermore, the impact point may develop dents over time. Summary of the Invention

[0005] The present invention aims to overcome at least one of the defects of the prior art mentioned above, and provides a bag handle to achieve elastic extension and retraction of the handle, so as to improve the service life of the handle.

[0006] A bag handle includes a carrying handle and a connecting part; the connecting part is embedded at both ends of the carrying handle; the connecting part includes a fixed housing, and a pull rod, a spring assembly, and a base assembly disposed in the fixed housing; one end of the pull rod is connected to the carrying handle; the other end is connected to the base assembly; the upper end of the spring assembly is fixed to the inner wall of the fixed housing, and the lower end is detachably mounted on the base assembly; by pulling the carrying handle upward, the pull rod is moved upward, causing the spring assembly to compress from bottom to top to achieve elastic stretching.

[0007] Furthermore, the bag handle of the present invention also includes a bearing, and the pull rod is fitted into the bearing.

[0008] The bearing is cylindrical with a through hole in the central shaft. It is fitted onto the outer layer of the pull rod and keeps the pull rod straight up and down during the stretching process, thus improving the stability of the stretching.

[0009] To improve service life, the pull rod of this invention is made of stainless steel. When the handle is pulled up, the stainless steel pull rod rises along with the handle, and the base assembly compresses the spring assembly upwards. The spring assembly is designed to maintain pressure balance, and at this time, the inner limiting structure of the fixed housing provides stable and reliable strength support for lifting the bag. When the handle is lowered, under the action of the spring assembly's rebound force, the stainless steel pull rod sinks steadily, driving the handle to return to its original position until the handle contacts the upper limit position of the fixed housing.

[0010] The bag handle of the present invention also includes a damping component; the lower end of the fixed housing is provided with interfaces on both sides for connecting to the damping component.

[0011] In practical applications, to reduce costs, only a torsion spring is used at the connection between the handle and the housing. While this allows the handle to return to its original position, it does so very quickly, resulting in a loud "snap" sound and affecting the user experience. This invention addresses this by adding a damping component at one of the connection points, neutralizing the strong torque of the torsion spring and allowing the entire handle to return to its original position more slowly.

[0012] Furthermore, the spring assembly consists of four sets of compression springs, each vertically positioned at one of the four corners of the base assembly.

[0013] The force is evenly distributed at the four corners of the base assembly, which makes the force more even during pulling or rebounding.

[0014] Furthermore, the base assembly includes a baffle and a nut, the pull rod passes through the central axis of the baffle and is fixed at the bottom to the nut; a set of compression springs is provided at each of the four corners of the baffle.

[0015] The nut serves to secure the baffle and the tie rod, and also facilitates disassembly, maintenance, and replacement of parts.

[0016] When the handle is retracted, under gravity, the four springs are in their normal or slightly compressed state, the stainless steel pull rod sinks, and the stop plate is at the bottom of the inner side of the fixed housing. When the handle is pulled up, the stainless steel pull rod rises with the handle, the nut pulls the stop plate upward, thereby compressing the four springs. The bearing maintains the straight up and down movement of the pull rod during the extension process, and the four springs maintain pressure balance. At this time, the stop plate contacts the inner limiting structure of the cavity inside the fixed housing, providing stable and reliable strength support for carrying the bag.

[0017] Furthermore, the handle includes a support layer and a filling layer; the support layer is hollow inside, the filling layer is disposed inside the support layer, and both ends of the support layer are movably connected to the fixed housing; the two side edges of the support layer are respectively connected to the pull rod.

[0018] The outer support layer is made of higher-strength plastic and is used to provide strength support; the inner filler layer is mainly used to fill the shape, maintain the overall shape, and also serve as a connector.

[0019] Furthermore, the two ends of the filling layer are respectively provided with arc-shaped grooves, the upper end of the pull rod is expanded to form a circular pull cap, and one side of the circular pull cap is embedded in the arc-shaped groove.

[0020] The upper end of the pull rod expands to serve as a limiting structure during the upward pulling process of the handle; the top of the stainless steel pull rod expands to form a circular cap, which helps to balance the pressure during pulling. To improve the compactness of the structure, one side of the circular cap is embedded in the arc-shaped groove of the filling layer, realizing the embedded connection between the two.

[0021] Furthermore, the upper end of the fixed housing is provided with a slide rail; both ends of the support layer are slidably connected to the slide rail; the interior of the fixed housing is hollow, and the side wall is provided with four sets of vertical slide grooves for installing spring assemblies.

[0022] The two ends of the support layer match the sliding grooves of the slide rail, enabling a sliding connection between the two. The vertical sliding groove is designed for the installation of the spring assembly.

[0023] Furthermore, the damping assembly includes a first damping module and a second damping module, which are respectively disposed on both sides of the lower end of the fixed housing and are detachably connected to the interface.

[0024] Furthermore, the first damping module includes a first locking block, a first fixing pin, and a torsion spring; the torsion spring is sleeved on the first fixing pin, the first fixing pin passes laterally through the first locking block, and its two ends are respectively fixed to the interface; the second damping module includes a second locking block, a second fixing pin, and a damping POM block, where POM is synthetic resin, possessing high hardness, high rigidity, and high wear resistance. The damping POM block is sleeved on the second fixing pin; the second fixing pin passes through the second locking block, and its two ends are respectively fixedly connected to the interface.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] (1) Compared with traditional telescopic handles made of rubber, the elastic telescopic handle of the present invention uses rigid plastic, stainless steel and other materials that are not easily worn out, which greatly reduces the chance of the handle aging and damage, while ensuring the strength requirements during the stretching process.

[0027] (2) The present invention also ensures the stability of the movement during the stretching and retraction process by designing bearings and four sets of evenly distributed springs, and will not cause the handle body to be bumped and the paint to be chipped due to oblique movement; the springs realize slow reset, and the overall look is stylish and technologically advanced; and fully ensures the comfortable feel during the lifting process.

[0028] (3) The elastic telescopic bag handle of this application also incorporates a damping component, which can neutralize the strong torque of the torsion spring, allowing the entire handle to slowly return to its original position and improving the user experience. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the three-dimensional structure of the bag handle in Example 1.

[0030] Figure 2 This is a schematic diagram of the exploded structure of the bag handle in Example 1.

[0031] Figure 3 A schematic diagram showing the structure of the bag handle connection without the fixed shell.

[0032] Figure 4 This is a schematic diagram showing the connection between the handle and the connecting part of the bag.

[0033] Figure 5 This is a schematic diagram of the bottom of the connecting part of the bag handle.

[0034] Figure 6 This is a schematic diagram of the hidden support layer and fixed shell of the bag handle in Example 2.

[0035] Figure 7 This is a schematic diagram of the exploded structure of the damping component in Example 2.

[0036] Figure 8 This is a schematic diagram of the connection structure between the damping component and the fixed housing in Example 2.

[0037] Figure 9 This is a cross-sectional view of the bag handle of the present invention in its retracted state.

[0038] Figure 10 This is a cross-sectional view of the handle of the bag of the present invention in a stretched state. Detailed Implementation

[0039] The accompanying drawings illustrate the technical solutions of the embodiments of the present invention in more detail. Throughout the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. The described embodiments are some, but not all, embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention. The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0040] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0041] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0042] Example 1

[0043] A type of bag handle, such as Figure 1 As shown, it includes a handle portion 1 and a connecting portion 2; the connecting portion 2 is embedded at both ends of the handle portion 1; as... Figure 2As shown, the connecting part 2 includes a fixed housing 21, and a pull rod 22, a spring assembly 23, and a base assembly 24 disposed in the fixed housing 21; one end of the pull rod 22 is connected to the handle part 1; the other end is connected to the base assembly 24; the upper end of the spring assembly 23 is fixed to the inner wall of the fixed housing 21, and the lower end is detachably installed on the base assembly 24; by pulling the handle part 1 upward, the pull rod 22 is driven to move upward, so that the spring assembly 23 is compressed from bottom to top to achieve elastic stretching.

[0044] like Figure 2 As shown, the bag handle of the present invention also includes a bearing 3, and the pull rod 22 is fitted into the bearing 3. The bearing 3 is cylindrical, with a through hole in the central shaft, and is fitted onto the outer layer of the pull rod 22. The bearing 3 keeps the pull rod 22 straight up and down during the stretching process, thus improving the stability of the stretching.

[0045] Combination Figures 2-3 As shown, the spring group 23 consists of four compression springs, which are vertically arranged at the four corners of the base assembly 24.

[0046] Combination Figures 2-3 As shown, the base assembly 24 includes a baffle 241 and a nut 242. The pull rod 22 passes through the central axis of the baffle 241 and is fixed to the nut 242 at its bottom. A set of compression springs is provided at each of the four corners of the baffle 241. Compared with two or fewer compression springs, the advantage of four sets of compression springs is that the compression springs are subjected to force on a surface, which is more stable. Compared with three compression springs, it takes into account that even if one compression spring is damaged, at least three points can still be guaranteed to be in a surface, so as not to reduce the user experience. Combined with the bearing that ensures "straight up and down", the stability of the invention during the lifting and retraction process is greatly improved. Since the straight up and down is fully maintained, it will not cause oblique wear to the pull rod, fixed shell, handle, etc., while providing a sufficient "stretchable" elasticity, it also takes into account the strong and wear-resistant characteristics of rigid materials.

[0047] like Figure 2 As shown, the handle 1 includes a support layer 11 and a filling layer 12; the support layer 11 is hollow inside, and the filling layer 12 is disposed inside the support layer 11, combined with... Figure 1 As shown, both ends of the support layer 11 are movably connected to the fixed housing 21; both ends of the support layer 11 are connected to the tie rod 22. Figure 4As shown, the filling layer 12 has arc-shaped grooves 10 at both ends, and the upper end of the pull rod 22 expands to form a circular pull cap 20, which serves as a limiting structure during the upward pulling process of the handle 1. One side of the circular pull cap 20 avoids contact with the arc-shaped groove 10; in one embodiment, one side of the circular pull cap 20 is embedded in the arc-shaped groove 10, thereby making the structure more compact. The expanded circular pull cap can reduce the local pressure on the handle, reducing the probability of damage in this area.

[0048] During the manufacturing process, the filling layer 12 and the pull rod 22 are first placed in the mold, paying attention to the relative relationship (avoidance or embedding) between the arc-shaped groove 10 of the filling layer 12 and the circular pull cap 20, and then fixed in place. The corresponding material of the support layer 11 is injected into the mold, and the entire handle 1 and pull rod 22 are injection molded. This structure has good integrity and simplifies the assembly process.

[0049] like Figure 4 As shown, the upper end of the fixed housing 21 is provided with a slide rail 30; both ends of the support layer 11 are slidably connected to the slide rail 30; as shown Figure 5 As shown, the interior of the fixed housing 21 is hollow, and the side wall is provided with four sets of vertical sliding grooves 40 for installing the spring assembly 23.

[0050] In this embodiment, the vibration and impact test method for bags and luggage was conducted according to the People's Republic of China Light Industry Standard QBT 2922-2018, and the qualification requirements were further improved based on the applicant's internal standards. The bag and luggage handle of this invention underwent 3500 vibration and impact tests. After the experiment, the handle was checked and found to be free of detachment or damage. The experimental results... Show bag handle Hand quality It exceeds the industry standard requirements of 2,000 shocks for mid-range suitcases and 3,000 shocks for high-end suitcases.

[0051] Example 2

[0052] This embodiment provides a bag handle with a damping structure.

[0053] like Figure 6 As shown, the bag handle of the present invention also includes a damping component 4; combined with Figure 1 As shown, the fixed housing 21 has interfaces 50 on both sides of its lower end for connecting to the damping assembly 4.

[0054] like Figure 6 As shown, the damping assembly 4 includes a first damping module 41 and a second damping module 42. The first damping module 41 and the second damping module 42 are respectively disposed on both sides of the lower end of the fixed housing 21 and are detachably connected to the interface 50.

[0055] Furthermore, such as Figures 7-8 As shown, the first damping module 41 includes a first locking block 411, a first fixing pin 412, and a torsion spring 413; the torsion spring 413 is sleeved on the first fixing pin 412, and the first fixing pin 412 passes laterally through the first locking block 411, with both ends fixed to the interface 50 respectively; the second damping module 42 includes a second locking block 421, a second fixing pin 422, and a damping POM block 423. POM, or synthetic resin, has the characteristics of high hardness, high rigidity, and high wear resistance. The damping POM block 423 is sleeved on the second fixing pin 422, and preferably, damping oil is also applied; the second fixing pin 422 passes through the second locking block 421, and both ends are fixedly connected to the interface 50 respectively.

[0056] The first locking block 411 and the second locking block 422 are each composed of two detachable and interlocking connecting blocks. The first locking block 411 is used for the fixed installation of the first fixing pin 412; the second locking block 422 is used for the fixed installation of the second fixing pin 422. Specifically, the first fixing pin 412 includes an internally threaded rod and a fixing screw (not shown in the figure); one end of the internally threaded rod has a blind hole inside, and the inner wall of the blind hole has threads. After the torsion spring 413 is installed into the internally threaded rod, the internally threaded rod is pushed into 411, and then the internally threaded rod is locked by the fixing screw. The first fixing pin 412 is divided into two parts, which facilitates the assembly and disassembly of the torsion spring 413.

[0057] like Figure 9 As shown, when the handle 1 is in the retracted state, under gravity, the four springs are in a normal or slightly compressed state, the stainless steel pull rod 22 sinks, and the baffle 241 is at the bottom inside the fixed housing 21. Combined with... Figure 10 As shown, when the handle 1 is pulled up, the stainless steel pull rod 22 rises along with the handle 1. The nut 242 pulls the baffle 241 upward, thereby compressing the four springs. The bearing 3 maintains the straight up and down movement of the pull rod 22 during the stretching process, and the four springs maintain pressure balance. At this time, the baffle 241 contacts the inner limiting structure of the cavity inside the fixed housing 21, providing stable and reliable strength support for lifting the bag. When or after the handle 1 retracts, the entire bag handle falls in the predetermined direction under the action of the torsion spring, while the damping POM block 423, which acts opposite to the force of the torsion spring, plays a buffering and rebounding role, causing the entire bag handle to slowly conform to the surface of the case.

[0058] The above embodiments are merely illustrative of the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to the preferred embodiments above, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of the present invention should not depart from the spirit and scope of the present invention. Those skilled in the art can also make other changes within the spirit of the present invention and use them in the design of the present invention, as long as they do not deviate from the technical effects of the present invention. These changes made according to the spirit of the present invention should all be included within the scope of protection claimed by the present invention.

Claims

1. A bag handle, characterized in that, It includes a handle (1) and a connecting part (2); the connecting part (2) is embedded at both ends of the handle (1); the connecting part (2) includes a fixed housing (21), and a pull rod (22), a spring assembly (23) and a base assembly (24) disposed in the fixed housing (21); One end of the pull rod (22) is connected to the handle (1); the other end is connected to the base assembly (24); The upper end of the spring assembly (23) is fixed to the inner wall of the fixed housing (21), and the lower end is mounted on the base assembly (24); By pulling the handle (1) upward, the pull rod (22) is moved upward, causing the spring assembly (23) to compress from bottom to top and achieve elastic stretching; It also includes a bearing (3), and the pull rod (22) is fitted into the bearing (3); the fixed housing (21) is provided with an inner limiting structure; The base assembly (24) includes a baffle (241), and the pull rod (22) passes through the central axis of the baffle (241); the spring group (23) consists of four sets of compression springs, and each of the four corners of the baffle (241) is provided with a set of compression springs; when the handle is pulled up, the four sets of compression springs are compressed, and at this time the baffle contacts the inner limiting structure of the cavity inside the fixed housing; It also includes a damping component (4), and the two sides of the lower end of the fixed housing (21) are provided with interfaces (50) for connecting to the damping component (4). The handle (1) includes a support layer (11) and a filling layer (12). The filling layer (12) has arc-shaped grooves (10) at both ends, and the upper end of the pull rod (22) is expanded to form a circular pull cap (20). One side of the circular pull cap (20) is embedded in the arc-shaped groove (10). The upper end of the fixed housing (21) is provided with a slide rail (30); both ends of the support layer (11) are slidably connected to the slide rail (30); the interior of the fixed housing (21) is hollow, and the side wall is provided with four sets of vertical slide grooves (40) for installing spring assembly (23).

2. The bag handle according to claim 1, characterized in that, The base assembly (24) also includes a nut, the pull rod (22) passes through the central axis of the baffle (241) and is fixed at the bottom with the nut; a set of compression springs are provided at the four corners of the baffle (241).

3. The bag handle according to claim 2, characterized in that, The support layer (11) is hollow inside, and the filling layer (12) is located inside the support layer (11). The two ends of the support layer (11) are movably connected to the fixed shell (21); the two side edges of the support layer (11) are connected to the pull rod (22).

4. The bag handle according to claim 1, characterized in that, The damping assembly (4) includes a first damping module (41) and a second damping module (42). The first damping module (41) and the second damping module (42) are respectively located on both sides of the lower end of the fixed housing (21) and are detachably connected to the interface (50).

5. The bag handle according to claim 4, characterized in that, The first damping module (41) includes a first locking block (411), a first fixing pin (412), and a torsion spring (413); the torsion spring (413) is sleeved on the first fixing pin (412), the first fixing pin (412) passes through the first locking block (411) laterally, and both ends are fixed to the interface (50); the second damping module (42) includes a second locking block (421), a second fixing pin (422), and a damping POM block (423), the damping POM block (423) is sleeved on the second fixing pin (422); the second fixing pin (422) passes through the second locking block (421), and both ends are fixedly connected to the interface (50).

6. The bag handle according to claim 5, characterized in that, The first locking block (411) and the second locking block (421) are each composed of two detachable and interlocking connecting blocks.

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