Wear-resistant metal reinforcing rib pull rod

Abstract

The utility model belongs to the technical field of pull rods, and particularly relates to a wear-resistant metal reinforcing rib pull rod which comprises a sleeve rod and a pull rod, the pull rod is slidably connected to the inner side of the sleeve rod, and the upper end of the pull rod is connected with a grip. According to the wear-resistant metal reinforcing rib pull rod, when the pull rod is reinforced, the reinforcing ribs with the needed number are sequentially connected to the lower end of the grip, then the reinforcing ribs connected to the lower end of the grip slide to the inner side of the pull rod, and finally when the grip is about to move to make contact with the upper side of the pull rod, the insertion rod is pressed into the circular groove firstly; when the grip moves to contact with the upper side of the pull rod, and a connecting plate on the upper side of the pull rod slides into a vertical groove in the outer end of the grip, a spring rebounds to push an inserting rod, and one end, far away from the spring, of the inserting rod is pushed into an inserting hole in the connecting plate, so that the pull rod is fixed to the lower side of the grip, and a reinforcing rib at the lower end of the grip is fixed to the inner side of the pull rod; the pull rod is reinforced, and it is guaranteed that the pull rod cannot be bent easily when pulled out of the sleeve rod for use.

Description

Technical Field

[0001] This utility model relates to the field of tie rod technology, specifically a wear-resistant metal reinforced tie rod. Background Technology

[0002] A rolling suitcase is a type of luggage with a handle and wheels. It is widely used because it can carry a large number of items and is easy to move.

[0003] Currently, most rolling suitcases have a pull rod (also known as a telescopic rod) that inserts into the interior of the suitcase and connects to a fixing device inside the suitcase for installation. This structure reduces the internal space of the suitcase, decreasing its volume, and also makes the inner wall uneven, creating two protruding ridges near the back, which can hinder the placement of larger items. To address this, some manufacturers have thinned the pull rod. While this solves the space issue, it weakens the structural strength and load-bearing capacity of the pull rod, making it more prone to bending under heavy loads.

[0004] As disclosed in Chinese Patent CN221330480U, the pull rod structure of the suitcase features a pull rod seat on the top surface of the suitcase body. The pull rod seat serves as a connecting beam between the upper parts of the two sets of pull rod tubes, improving strength, and also as a sealing component for the outer tube. The inner tube of the outer tube is telescopically fitted to the outer tube through a first through hole and is limited by the pull rod seat to prevent it from coming out, ensuring the structural stability of the pull rod tube. At the same time, since the inner tubes of both sets of pull rod tubes pass through the two first through holes of the integrated pull rod seat, they can move in parallel simultaneously, making the movement of the pull rod handle smoother and providing a better user experience. Both the outer and inner tubes are flat tubes, resulting in a larger contact area between the outer tube and the suitcase body. This makes it easier for the user to apply force when pushing the suitcase from the side, making the suitcase more stable under force. In addition, the pull rod tube as a whole is thinner and lighter, taking up less space inside the suitcase.

[0005] Although the outer and inner tubes of the tie rod structure are made of carbon fiber or lightweight metal and have high strength, they are still hollow tubes. Therefore, when the inner tube is pulled out of the outer tube, the inner tube at the outer end is squeezed and is still prone to bending and damage.

[0006] Therefore, we urgently need to provide a wear-resistant metal reinforced tie rod. Utility Model Content

[0007] The purpose of this invention is to provide a wear-resistant metal reinforced tie rod to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a wear-resistant metal reinforcing tie rod, comprising a sleeve rod and a tie rod, wherein the tie rod is slidably connected to the inner side of the sleeve rod, a handle is connected to the upper end of the tie rod, and a reinforcing mechanism is connected to the inner and outer ends of the tie rod.

[0009] The reinforcing mechanism includes a reinforcing rib connected inside the pull rod, a threaded rod fixedly connected to the upper middle position of the reinforcing rib, and a connecting unit connected to the outer end of the handle and the pull rod.

[0010] A further improvement is that the connecting unit includes a spring connected inside the grip, one end of the spring is fixedly connected to a plug rod, and the upper left and right ends of the pull rod are fixedly connected to connecting plates.

[0011] A further improvement is that threaded grooves are provided at the middle positions of the left and right ends of the lower side of the grip and at the middle position of the lower end of the reinforcing rib. The outer side of the threaded rod is threaded to the inner side of the threaded groove. Thus, after the threaded rod at the upper end of the reinforcing rib is threaded to the lower end of the grip or the inner side of the threaded groove at the lower end of another reinforcing rib, the required number of reinforcing ribs can be connected to the lower end of the grip.

[0012] A further improvement is that the outer side of the reinforcing rib is slidably connected to the inner side of the pull rod, so that when the handle is installed on the upper end of the pull rod and the reinforcing rib at the lower end of the handle slides to the inner side of the pull rod, the pull rod can be reinforced, ensuring that the pull rod will not be easily bent when squeezed when it is pulled out of the sleeve.

[0013] A further improvement is that vertical grooves are provided on the left and right sides of the lower part of the left and right ends of the grip, and a circular groove is provided inside the grip at the vertical groove. The end of the spring away from the insertion rod is fixedly connected to the innermost end of the circular groove, and the outer side of the insertion rod is slidably connected to the inner side of the circular groove, so that when the spring bounces, it can drive the insertion rod to slide along the inner side of the circular groove.

[0014] A further improvement is that the upper end of the connecting plate is provided with an insertion hole, the upper side of the pull rod abuts against the lower side of the handle, the outer side of the connecting plate is slidably connected to the inner side of the vertical groove, and the outer side of the insertion rod away from the spring is inserted into the inner side of the insertion hole, so that the insertion rod is pushed out of the circular groove by the spring rebound, so that the end of the insertion rod away from the spring is inserted into the insertion hole inside the connecting plate, which can fix the connecting plate to the vertical groove.

[0015] A further improvement is that a rubber anti-slip pad is fixedly connected to the middle position of the outer side of the handle. By connecting to the rubber anti-slip pad on the outer side of the handle, the user can grip the soft rubber anti-slip pad on the outer side of the handle when pulling the suitcase, making the user more comfortable when pulling the suitcase.

[0016] In summary, this application discloses a wear-resistant metal reinforcing tie rod.

[0017] This technical solution reinforces the pull rod by installing the handle onto the upper end of the pull rod and sliding the reinforcing rib at the lower end of the handle to the inside of the pull rod, ensuring that the pull rod will not be easily bent when squeezed after being pulled out of the sleeve.

[0018] Furthermore, since any number of reinforcing ribs can be connected to the lower end of the handle, the overall length of the reinforcing ribs connected to the lower end of the handle can be adjusted. This allows for the installation of the corresponding number of reinforcing ribs to the lower end of the handle and their sliding into the inside of the handle, based on the length of the handle rod that the user is accustomed to pulling out from the sleeve when pulling the suitcase. This reinforces the handle rod that is pulled out from the sleeve and avoids increasing the overall weight of the handle by installing extra reinforcing ribs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the grip at the connection of the reinforcing rib in this utility model;

[0021] Figure 3 This is a schematic diagram of the connection unit structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure at the upper end of the pull rod of this utility model.

[0023] In the diagram: 1. Sleeve rod; 2. Pull rod; 3. Handle; 401. Reinforcing rib; 402. Threaded rod; 501. Spring; 502. Insert rod; 503. Connecting plate; 6. Rubber anti-slip pad. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-4 This utility model provides a technical solution: a wear-resistant metal reinforced pull rod, including a sleeve rod 1 and a pull rod 2. The pull rod 2 is slidably connected to the inner side of the sleeve rod 1. A handle 3 is connected to the upper end of the pull rod 2. Reinforcing mechanisms are connected to the inner and outer ends of the pull rod 2.

[0026] The reinforcing mechanism includes a reinforcing rib 401 connected inside the pull rod 2. The reinforcing rib 401 is a wear-resistant metal rod. A threaded rod 402 is fixedly connected to the middle position of the upper side of the reinforcing rib 401. Threaded grooves are opened at the middle positions of the left and right ends of the lower side of the handle 3 and at the middle position of the lower end of the reinforcing rib 401. The outer side of the threaded rod 402 is threadedly connected to the inner side of the threaded groove. Thus, after the threaded rod 402 at the upper end of the reinforcing rib 401 is threadedly connected to the lower end of the handle 3 or the inner side of the threaded groove at the lower end of another reinforcing rib 401, the required number of reinforcing ribs 401 can be connected to the lower end of the handle 3.

[0027] The outer side of the reinforcing rib 401 is slidably connected to the inner side of the pull rod 2. Thus, when the handle 3 is installed on the upper end of the pull rod 2, and the reinforcing rib 401 at the lower end of the handle 3 slides to the inner side of the pull rod 2, the pull rod 2 can be reinforced, ensuring that the pull rod 2 will not be easily bent when squeezed when it is pulled out from the sleeve 1.

[0028] The handle 3 and the pull rod 2 are connected to a connecting unit at their outer ends. The connecting unit includes a spring 501 connected inside the handle 3. One end of the spring 501 is fixedly connected to a plug rod 502. Vertical grooves are provided on the left and right sides of the lower part of the left and right ends of the handle 3. A circular groove is provided inside the handle 3 at the vertical groove. The end of the spring 501 away from the plug rod 502 is fixedly connected to the innermost end of the circular groove. The outer side of the plug rod 502 is slidably connected to the inner side of the circular groove. Thus, when the spring 501 bounces, it can drive the plug rod 502 to slide along the inner side of the circular groove.

[0029] Connecting plates 503 are fixedly connected to the upper left and right ends of the pull rod 2. The upper end of the connecting plate 503 has an insertion hole. The upper side of the pull rod 2 abuts against the lower side of the handle 3. The outer side of the connecting plate 503 is slidably connected to the inner side of the vertical groove. The outer side of the insertion rod 502 away from the spring 501 is inserted into the inner side of the insertion hole. Thus, when the handle 3 is placed on the upper end of the pull rod 2 and the connecting plate 503 slides into the vertical groove, the spring 501 rebounds and pushes the insertion rod 502 out of the circular groove, so that the end of the insertion rod 502 away from the spring 501 is inserted into the insertion hole inside the connecting plate 503. This fixes the connecting plate 503 in the vertical groove, and at the same time fixes the pull rod 2 and the handle 3 relatively, while allowing the reinforcing rib 401 connected to the lower side of the handle 3 to slide to the inner side of the pull rod 2.

[0030] A rubber anti-slip pad 6 is fixedly connected to the middle of the outer side of the handle 3. By connecting to the rubber anti-slip pad 6 on the outer side of the handle 3, the user can grip the soft rubber anti-slip pad 6 on the outer side of the handle 3 when pulling the suitcase, making the user more comfortable when pulling the suitcase.

[0031] Working principle: When reinforcing the pull rod 2, first connect the required number of reinforcing ribs 401 to the lower end of the handle 3 in sequence. Then slide the reinforcing ribs 401 connected to the lower end of the handle 3 to the inside of the pull rod 2. Finally, when the handle 3 is about to move to contact the upper side of the pull rod 2, press the insert rod 502 into the circular groove. At the same time, the spring 501 is compressed until the handle 3 moves to contact the upper side of the pull rod 2. At the same time, the connecting plate 503 on the upper side of the pull rod 2 slides into the vertical groove at the outer end of the handle 3. At this time, the spring 501 rebounds and pushes the insert rod 502, pushing the end of the insert rod 502 away from the spring 501 into the insertion hole inside the connecting plate 503, so that the pull rod 2 is fixed to the lower side of the handle 3. At the same time, the reinforcing ribs 401 at the lower end of the handle 3 are fixed to the inside of the pull rod 2, thus reinforcing the pull rod 2 and ensuring that the pull rod 2 will not be easily bent when it is pulled out of the sleeve rod 1 for use.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A wear-resistant metal reinforcing tie rod, comprising a sleeve rod (1) and a tie rod (2), wherein the tie rod (2) is slidably connected to the inner side of the sleeve rod (1), characterized in that: The upper end of the pull rod (2) is connected to a handle (3), and the inner and outer ends of the pull rod (2) are connected to a reinforcing mechanism; The strengthening mechanism includes a reinforcing rib (401) connected inside the pull rod (2), and a threaded rod (402) is fixedly connected to the upper middle position of the reinforcing rib (401). The handle (3) and the outer end of the pull rod (2) are connected to a connecting unit.

2. The wear-resistant metal reinforcing tie rod according to claim 1, characterized in that: The connecting unit includes a spring (501) connected inside the grip (3), one end of the spring (501) is fixedly connected to a plug rod (502), and the upper left and right ends of the pull rod (2) are fixedly connected to connecting plates (503).

3. The wear-resistant metal reinforcing tie rod according to claim 1, characterized in that: Threaded grooves are provided at the middle positions of the left and right ends of the lower side of the grip (3) and at the middle position of the lower end of the reinforcing rib (401), and the outer side of the threaded rod (402) is threadedly connected to the inner side of the threaded groove.

4. The wear-resistant metal reinforcing tie rod according to claim 1, characterized in that: The outer side of the reinforcing rib (401) is slidably connected to the inner side of the tie rod (2).

5. A wear-resistant metal reinforcing tie rod according to claim 2, characterized in that: Vertical grooves are provided on the left and right sides of the lower part of the left and right ends of the grip (3). A circular groove is provided inside the grip (3) at the vertical groove. The end of the spring (501) away from the insert rod (502) is fixedly connected to the innermost end of the circular groove. The outer side of the insert rod (502) is slidably connected to the inner side of the circular groove.

6. A wear-resistant metal reinforcing tie rod according to claim 2, characterized in that: The upper end of the connecting plate (503) is provided with an insertion hole, the upper side of the pull rod (2) abuts against the lower side of the handle (3), the outer side of the connecting plate (503) is slidably connected to the inner side of the vertical groove, and the outer side of the insertion rod (502) away from the spring (501) is inserted into the inner side of the insertion hole.

7. The wear-resistant metal reinforcing tie rod according to claim 1, characterized in that: A rubber anti-slip pad (6) is fixedly connected to the middle position of the outer side of the grip (3).

Images