A positioning structure and a pull rod containing the positioning structure

Abstract

The utility model relates to the field of luggage, and specifically to a positioning structure and a pull rod containing the positioning structure, wherein the positioning structure comprises a first limiting assembly and a rack, wherein the first limiting assembly is provided with a gear and a clamping piece, wherein the gear is meshed with the rack, and the bottom of the clamping piece is hook-shaped and provided with limiting teeth, wherein the limiting teeth are provided for the clamping gear. Position movement is achieved by meshing the rack with the gear on the first limiting assembly, and the positioning of the first limiting assembly is achieved by the limiting teeth at the bottom of the clamping piece being engaged with the gear. The utility model solves the problem that the strength of a telescopic tube or a positioning strip is reduced due to too many holes, the positioning distance is too large due to too few holes, and the pull rod can only be adjusted to a few fixed heights.

Description

Technical Field

[0001] The utility model relates to the technical field of luggage cases, in particular to a positioning structure and a pull rod containing the positioning structure. Background Art

[0002] Conventional trolley suitcases are positioned by directly punching holes on the telescopic tube, or by setting a plastic positioning strip inside the telescopic tube for positioning; the punched telescopic tube is not beautiful, too many holes will affect the strength of the telescopic tube, too few holes will make the positioning distance too large, and the pull rod can only be adjusted to a few fixed heights; the plastic positioning strip has poor strength and is easy to break after being hit, and there is also the problem that the strength of the positioning strip will decrease if too many holes are punched, and the positioning distance will be too large if too few holes are punched, and the pull rod can only be adjusted to a few fixed heights. Utility Model Content

[0003] To solve the problem that the telescopic tube or positioning strip has too many holes and its strength is reduced, too few holes make the positioning distance too large, and the pull rod can only be adjusted to a few fixed heights.

[0004] The utility model provides a positioning structure, comprising a first limiting assembly and a rack. The first limiting assembly is provided with a gear and a clamping piece, the gear is meshed with the rack, the bottom of the clamping piece is hook-shaped and provided with limiting teeth, and the limiting teeth are provided for the clamping gear.

[0005] Preferably, the first limiting assembly further includes a first shell, the gear and the engaging member are both located inside the first shell, an opening is provided on the side of the first shell, and the gear is meshed with the rack through the opening.

[0006] Preferably, a limiting frame is provided on the top of the engaging member, and a first protrusion is provided on the first shell body, and the first protrusion is engaged with the inside of the limiting frame.

[0007] Preferably, the first limiting assembly further includes a first spring located in the limiting frame, the bottom end of the first spring is connected to the first protrusion, and the top end of the first spring is connected to the top of the limiting frame.

[0008] Preferably, the first limiting assembly also includes an axle, the gear is provided with a first axial hole, the first shell is provided with a second axial hole, and the axle passes through the first axial hole and the second axial hole to connect the gear and the first shell.

[0009] Preferably, a positioning structure also includes a second limiting assembly, which includes a second shell, a first positioning member, a second positioning member and a second spring. The bottom of the rack is connected to the second shell, and the first positioning member and the second positioning member are both located inside the second shell. One end of the second positioning member is sleeved with the second spring and connected to the second shell, and the other end of the second positioning member is engaged with one end of the first positioning member.

[0010] Preferably, a first hole is provided on the top of the second shell, the bottom end of the first shell passes through the first hole and is connected to the first positioning member, and the second shell is provided with a second hole for the first positioning member to slide.

[0011] Preferably, a second protrusion is provided on the side of the first positioning member, the top surface of the second protrusion and the bottom surface of the first shell are both inclined surfaces with the same inclination, and a third protrusion for positioning is provided at the other end of the first positioning member.

[0012] The utility model provides a pull rod, comprising the above-mentioned positioning structure.

[0013] The beneficial effects of the utility model are reflected in that the position movement is realized by meshing the rack and the gear on the first limit assembly, and the first limit assembly is positioned by the limit teeth at the bottom of the engaging member engaging with the gear. The problem that the telescopic tube or positioning strip has too many holes and the strength is poor, too few holes make the positioning distance too large, and the pull rod can only be adjusted to a few fixed heights is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is one of the three-dimensional diagrams provided by the utility model.

[0015] Figure 2 This is a cross-sectional view provided by the utility model.

[0016] Figure 3 This is one of the explosion diagrams provided by the utility model.

[0017] Figure 4 This is the second stereogram provided by the utility model.

[0018] Figure 5 This is the second explosion diagram provided by the utility model.

[0019] In the figure: 1-first limiting assembly; 11-gear; 111-first axial hole; 12-engaging member; 121-limiting frame; 122-limiting tooth; 13-first shell; 131-opening; 132-first protrusion; 133-second axial hole; 14-first spring; 15-axle; 2-rack; 3-second limiting assembly; 31-second shell; 311-first hole; 312-second hole; 32-first positioning member; 321-second protrusion; 322-third protrusion; 33-second positioning member; 34-second spring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] Reference Figure 1-Figure 5 A positioning structure includes a first limiting component 1 and a rack 2. The first limiting component 1 is provided with a gear 11 and a clamping member 12. The gear 11 is meshed with the rack 2. The bottom of the clamping member 12 is hook-shaped and is provided with a limiting tooth 122. The limiting tooth 122 is provided for the clamping gear 11.

[0022] The rack 2 is meshed with the gear 11 on the first limiting assembly 1 to realize position movement, and the limiting teeth 122 at the bottom of the engaging member 12 are engaged with the gear 11 to realize the positioning of the first limiting assembly 1. The problem that the telescopic tube or positioning strip has too many holes and the strength is poor, too few holes make the positioning distance too large, and the pull rod can only be adjusted at a few fixed heights is solved.

[0023] A protrusion is provided on one side of the rack 2, and the protrusion is engaged with the hole on the telescopic tube of the luggage box, so that one side of the rack 2 is close to the inner arm of the telescopic tube, thereby fixing the rack 2 to the telescopic tube, and teeth are provided on the other side of the rack 2, and the teeth on the rack 2 and the teeth on the gear 11 are meshed with each other.

[0024] like Figure 2 and Figure 3 As shown, in some embodiments, the first limiting assembly 1 further includes a first shell 13, the gear 11 and the engaging member 12 are both located inside the first shell 13, an opening 131 is provided on the side of the first shell 13, and the gear 11 is meshed with the rack 2 through the opening 131.

[0025] The first housing 13 wraps the gear 11 and the engaging member 12 so that the first limiting assembly 1 moves as a whole.

[0026] like Figure 3 and Figure 5 As shown, in some embodiments, a limiting frame 121 is provided on the top of the engaging member 12 , and a first protrusion 132 is provided on the first shell 13 . The first protrusion 132 is engaged with the inside of the limiting frame 121 .

[0027] Since the first protrusion 132 is engaged with the interior of the limiting frame 121 , the vertical movement distance of the engaging member 12 is limited by the height of the limiting frame 121 .

[0028] like Figure 5As shown, in some embodiments, the first limiting assembly 1 also includes a first spring 14 located in the limiting frame 121 , the bottom end of the first spring 14 is connected to the first protrusion 132 , and the top end of the first spring 14 is connected to the top of the limiting frame 121 .

[0029] The first spring 14 serves to reset the engaging member 12. When the top of the engaging member 12 is forced to move downward, the first spring 14 is compressed until the bottom surface of the engaging member 12 contacts the first shell 13 and the first spring 14 is no longer compressed. When the top of the engaging member 12 is not subject to force, the first spring 14 bounces the engaging member 12 upward so that a portion of the top of the engaging member 12 is exposed outside the first shell 13.

[0030] like Figure 3 and Figure 5 As shown, in some embodiments, the first position-limiting assembly 1 further includes an axle 15, the gear 11 is provided with a first shaft hole 111, the first housing 13 is provided with a second shaft hole 133, and the axle 15 passes through the first shaft hole 111 and the second shaft hole 133 to connect the gear 11 and the first housing 13. The gear 11 rotates around the axle 15, driving the entire first position-limiting assembly 1 to move on the rack 2.

[0031] Specifically, the limiting teeth 122 are located at the bottom of the inner side of the hook-shaped structure of the engaging member 12, and there are four limiting teeth 122; under normal conditions, the engaging member 12 is subjected to the upward elastic force of the first spring 14, and the limiting teeth 122 are engaged with the gear 11, thereby preventing the gear 11 from rotating and realizing the positioning of the first limiting component 1; when the top of the engaging member 12 is pressed, the engaging member 12 moves downward, the limiting teeth 122 are separated from the gear 11, and the gear 11 rotates freely around the axle 15.

[0032] like Figure 2 and Figure 5 As shown, in some embodiments, a positioning structure also includes a second limiting assembly 3, the second limiting assembly 3 includes a second shell 31, a first positioning member 32, a second positioning member 33 and a second spring 34, the bottom of the rack 2 is connected to the second shell 31, the first positioning member 32 and the second positioning member 33 are both located inside the second shell 31, one end of the second positioning member 33 is sleeved with the second spring 34 and connected to the second shell 31, and the other end of the second positioning member 33 is engaged with one end of the first positioning member 32.

[0033] The second limiting assembly 3 is used to be engaged and fixed with the outer positioning hole. The outer positioning hole can be a conventional hole punched on the telescopic tube, or a hole punched on a positioning strip provided in the telescopic tube.

[0034] like Figure 3As shown, in some embodiments, a first hole 311 is provided on the top of the second shell 31, the bottom end of the first shell 13 passes through the first hole 311 and is connected to the first positioning member 32, and the second shell 31 is provided with a second hole 312 for the first positioning member 32 to slide.

[0035] The design of the first hole 311 and the second hole 312 enables the first housing 13 to drive the first positioning member 32 to move along the second hole 312 .

[0036] like Figure 3 As shown, in some embodiments, a second protrusion 321 is provided on the side of the first positioning member 32, the top surface of the second protrusion 321 and the bottom surface of the first shell 13 are both inclined surfaces with the same inclination, and the other end of the first positioning member 32 is provided with a third protrusion 322 for positioning.

[0037] Under normal conditions, one end of the second spring 34 abuts against the second shell 31 , and the other end abuts against the first positioning member 32 . Under the action of the elastic force of the second spring 34 , the third protrusion 322 at one end of the first positioning member 32 engages with the outer positioning hole to achieve the positioning of the second limit assembly 3 .

[0038] The second spring 34 is sleeved on the second positioning member 33; the second positioning member 33, on the one hand, keeps the second spring 34 upright, and on the other hand, restricts the first positioning member 32 within the second shell 31, thereby preventing the first positioning member 32 from being ejected from the second hole 312 of the second shell 31 by the second spring 34.

[0039] When the first shell 13 passes through the first hole 311 and pushes the second protrusion 321 downward, since the contact surfaces of the first shell 13 and the second protrusion 321 are both inclined surfaces, the first positioning member 32 is restricted by the second shell 31, and the first positioning member 32 can only move along the direction of the second hole 312. Since the side of the inclined surface close to the second hole 312 is lower, the first positioning member 32 moves toward the side away from the second hole 312, compressing the second spring 34, thereby driving the third protrusion 322 to separate from the outer positioning hole, thereby realizing the free movement of the second limit assembly 3.

[0040] The utility model provides a pull rod, comprising the above-mentioned positioning structure.

[0041] Specifically, the pull rod is divided into three sections, including a first tube section, a second tube section and a third tube section; the first tube section is fixedly connected to the inside of the suitcase, and the second limiting assembly 3 is located inside the first tube section; the second tube section and the first tube section are movably connected, the bottom of the second tube section and the top of the second limiting assembly 3 are fixedly connected, and the rack 2 and the first limiting assembly 1 are located inside the second tube section; the third tube section and the second tube section are movably connected, the bottom end of the third tube section and the top end of the first limiting assembly 1 are fixedly connected, and a handle is provided on the top of the third tube section, and a button is provided on the handle, and the button is connected to a transmission member, and the bottom of the transmission member is connected to the top end of the locking member 12.

[0042] How it works:

[0043] Under normal conditions, the positioning structure is in a locked state, the engaging member 12 is subjected to the upward elastic force of the first spring 14 , the limiting tooth 122 is engaged with the gear 11 , thereby preventing the gear 11 from rotating, thereby achieving the positioning of the first limiting assembly 1 .

[0044] One end of the second spring 34 abuts against the second shell 31 , and the other end abuts against the first positioning member 32 . Under the elastic force of the second spring 34 , the third protrusion 322 at one end of the first positioning member 32 engages with the outer positioning hole to achieve the positioning of the second limiting assembly 3 .

[0045] When the top of the engaging member 12 is pressed, the engaging member 12 moves downward, the limiting teeth 122 and the gear 11 are separated, and the gear 11 rotates freely around the axle 15 .

[0046] When the top of the first shell 13 is pressed, the first limiting assembly 1 moves downward as a whole, and the first shell 13 pushes the second protrusion 321 downward through the first hole 311. The first positioning member 32 moves to the side away from the second hole 312, compressing the second spring 34, thereby driving the third protrusion 322 to separate from the outer positioning hole, thereby realizing the free movement of the second limiting assembly 3.

[0047] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "center", "top", "bottom", "top", "bottom", "inside", "outside", "inner side", "outer side" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Among them, "inside" refers to an internal or enclosed area or space. "Periphery" refers to the area surrounding a specific component or a specific area.

[0048] In the description of the embodiments of the present utility model, the terms "first", "second", "third", and "fourth" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "third", and "fourth" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, the meaning of "multiple" is two or more.

[0049] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", and "assemble" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positioning structure, characterized in that: include: A first limiting component (1) and a rack (2), wherein the first limiting component (1) is provided with a gear (11) and a clamping member (12), wherein the gear (11) is meshed with the rack (2), and the bottom of the clamping member (12) is hook-shaped and provided with a limiting tooth (122), and the limiting tooth (122) is used to clamp the gear (11).

2. A positioning structure according to claim 1, characterized in that: The first limiting assembly (1) further comprises a first shell (13), the gear (11) and the engaging member (12) are both located inside the first shell (13), an opening (131) is provided on the side of the first shell (13), and the gear (11) is meshed with the rack (2) through the opening (131).

3. A positioning structure according to claim 2, characterized in that: A limiting frame (121) is provided on the top of the engaging member (12), and the first shell (13) is provided with a first protrusion (132), and the first protrusion (132) is engaged with the inside of the limiting frame (121).

4. A positioning structure according to claim 3, characterized in that: The first limiting assembly (1) further comprises a first spring (14) located in the limiting frame (121), wherein the bottom end of the first spring (14) is connected to the first protrusion (132), and the top end of the first spring (14) is connected to the top of the limiting frame (121).

5. A positioning structure according to claim 4, characterized in that: The first limiting assembly (1) further comprises an axle (15), the gear (11) is provided with a first axial hole (111), the first housing (13) is provided with a second axial hole (133), and the axle (15) passes through the first axial hole (111) and the second axial hole (133) to connect the gear (11) and the first housing (13).

6. A positioning structure according to claim 2, characterized in that: The invention also comprises a second limiting assembly (3), wherein the second limiting assembly (3) comprises a second shell (31), a first positioning member (32), a second positioning member (33) and a second spring (34); the bottom of the rack (2) is connected to the second shell (31); the first positioning member (32) and the second positioning member (33) are both located inside the second shell (31); one end of the second positioning member (33) is sleeved with the second spring (34) and connected to the second shell (31); the other end of the second positioning member (33) is engaged with one end of the first positioning member (32).

7. A positioning structure according to claim 6, characterized in that: A first hole (311) is provided at the top of the second shell (31), the bottom end of the first shell (13) passes through the first hole (311) and is connected to the first positioning member (32), and the second shell (31) is provided with a second hole (312) for the first positioning member (32) to slide.

8. A positioning structure according to claim 7, characterized in that: A second convex block (321) is provided on the side surface of the first positioning member (32), the top surface of the second convex block (321) and the bottom surface of the first shell (13) are both inclined surfaces with the same inclination, and a third convex block (322) for positioning is provided at the other end of the first positioning member (32).

9. A pull rod, comprising a positioning structure according to any one of claims 1 to 8.

Images