Double-draw-bar structure of draw-bar box

Abstract

The utility model discloses a double-pull-rod structure of a draw-bar box, and relates to the technical field of draw-bar boxes. The multifunctional box comprises a box body, universal wheels are fixedly installed on the bottom face of the box body, installation boxes are fixedly installed in the middles of the left side wall and the right side wall of the box body, lifting grooves are formed in the installation boxes, rectangular handle rods are slidably inserted into the tops of the lifting grooves, and elastic telescopic clamping pieces are arranged at the lower ends of the rectangular handle rods. A clamping groove used for clamping the elastic telescopic clamping piece is formed in the rear side face of the inner wall of the lifting groove. The rebound type rotating handles are rotated to be in a vertical state, the left rebound type rotating handle and the right rebound type rotating handle are grabbed together, force can be applied to the left rectangular handle rod and the right rectangular handle rod at the same time, traction force application to the box body is uniform, the box body is prevented from toppling over due to uneven stress in the box body moving process, and the service life of the box body is prolonged. And inconsistent friction force directions caused by changeable rotating directions of the universal wheels are reduced, so that the process of moving the box body is more labor-saving.

Description

Technical Field

[0001] The utility model relates to the technical field of trolley cases, in particular to a double-trolley structure of a trolley case. Background Art

[0002] As one of the important equipment for business trips, trolley cases are used to store the items needed for going out. Through the cooperation of the case, trolley and wheels, the movement of items during business trips is easier and faster, saving time and effort, greatly facilitating residents' travel and improving the travel experience.

[0003] The handle of the existing trolley case is placed on one side of the case. Holding the handle on one side will cause uneven force on the entire case. In addition, since the roller at the bottom of the case is a universal wheel, the direction of the friction force generated by the rotation direction of the universal wheel is not consistent with the direction of the force applied by holding the handle. In the process of moving the case, the inconsistency between the resistance and the force direction will require the user to apply greater force, and the case is prone to tipping over during movement.

[0004] For this purpose, a double-drawbar structure of a drawbar box is proposed. Utility Model Content

[0005] The purpose of the present invention is to solve the problems mentioned in the above background technology, and the present invention provides a double-drawbar structure for a drawbar case.

[0006] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0007] A double-trolley structure for a trolley case includes a case body, universal wheels are fixedly installed on the bottom surface of the case body, installation boxes are fixedly installed in the middle of the left and right side walls of the case body, a lifting slot is provided inside the installation box, a rectangular handle is slidably inserted into the top of the lifting slot, the lower end of the rectangular handle is provided with an elastic telescopic clamping piece, the rear side surface of the inner wall of the lifting slot is provided with a clamping slot for engaging the elastic telescopic clamping piece, the number of the clamping slots is several and evenly distributed longitudinally, the upper end of the rectangular handle is provided with a traction assembly for driving the elastic telescopic clamping piece, the opposite surfaces of the two rectangular handles are fixedly installed with extension plates of the case body that are symmetrical front and back, a rebound rotating handle is provided between the opposite surfaces of the two extension plates facing each other, and the top surface of the case is provided with an L-shaped storage slot for accommodating the rectangular handle and the extension plate.

[0008] Furthermore, the elastic telescopic engaging part includes a slide groove, which is opened at the lower end of the longitudinal part of the rectangular handlebar, and an upper wedge block is slidably installed on the inner wall surface of the slide groove, and a lower wedge block is fitted on the bottom surface of the upper wedge block, and the lower wedge block is slidably inserted into the surface of the rectangular handlebar and slidably engaged in the slot, and a first spring is fixedly installed on the side surface of the lower wedge block away from the slot, and one end of the first spring away from the lower wedge block is fixedly installed on the inner wall surface of the slide groove, and the traction assembly is used to drive the upper wedge block to rise and fall.

[0009] Furthermore, the traction assembly includes a spring groove, which is opened on the bottom surface of the horizontal part on the upper side of the rectangular handlebar, and a push rod is slidably installed on the inner wall surface of the spring groove, and a limiting groove is opened inside the push rod, and an insertion rod is fixedly installed on the top surface of the inner wall of the spring groove, and a limiting block is fixedly installed on the bottom surface of the insertion rod, and the insertion rod is slidably inserted into the top wall of the push rod, and the limit block is slidably installed on the inner wall surface of the limiting groove, and a second spring is fixedly connected between the top surface of the push rod and the top surface of the inner wall of the spring groove, and the second spring is sleeved on the outside of the insertion rod, and a connecting rod is fixedly installed on the bottom surface of the push rod, and the connecting rod passes through the top surface of the inner wall of the slide groove and is slidably arranged, and the bottom surface of the connecting rod is fixedly connected to the top surface of the upper wedge block.

[0010] Furthermore, the upper horizontal portion of the rectangular handle and the push rod are both located in the L-shaped receiving groove.

[0011] Furthermore, the rebound-type rotating handle includes a rotating rod, which is rotatably installed between the opposite surfaces of two front and rear extension plates. The rotating rod is arranged on the end surface of the extension plate away from the rectangular handle bar. A pull ring is fixedly installed on the surface of the rotating rod, and a torsion spring is fixedly connected between the front and rear side surfaces of the pull ring and the opposite surfaces of the extension plate.

[0012] Furthermore, when the pull ring is in a horizontal state, the entire pull ring is located in the L-shaped receiving groove.

[0013] The beneficial effects of the utility model are as follows:

[0014] When the rectangular handles on both sides rise to the same height, rotate the rebound rotating handle to the vertical state, and grasp the left and right rebound rotating handles together to apply force to the left and right rectangular handles at the same time, so that the traction force on the box is even, thereby avoiding the box from tipping over due to uneven force during the moving process, reducing the inconsistent direction of friction caused by the changing rotation direction of the universal wheel, and making the process of moving the box more labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an axonometric drawing of the three-dimensional structure of the utility model;

[0016] Figure 2This is a side sectional view of a single-sided three-dimensional structure of the utility model;

[0017] Figure 3 This is a front cross-sectional view of a single-side three-dimensional structure of the utility model;

[0018] Figure 4 This utility model Figure 3 A magnified view of the structure of the middle part A;

[0019] Figure 5 This utility model Figure 3 A magnified view of the structure of the middle B section;

[0020] Figure numerals: 1. Box body; 2. Universal wheel; 3. Mounting box; 4. Lifting slot; 5. Rectangular handle; 6. Elastic telescopic engaging part; 601. Slide slot; 602. Upper wedge block; 603. First spring; 604. Lower wedge block; 7. Slot; 8. Traction assembly; 801. Spring slot; 802. Push rod; 803. Limiting slot; 804. Limiting block; 805. Insert rod; 806. Second spring; 807. Connecting rod; 9. L-shaped receiving slot; 10. Extension plate; 11. Rebound rotating handle; 111. Rotating rod; 112. Pull ring; 113. Torsion spring. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. In addition, the terms "first," "second," etc. are used only to distinguish the descriptions and are not to be understood as indicating or implying relative importance.

[0024] The electrical components mentioned in this article are all connected to an external main controller and 220V AC power, and the main controller can be a conventional known device that performs control such as a computer.

[0025] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0026] like Figures 1 to 5 As shown, a double-drawbar structure of a trolley case includes a case body 1, a universal wheel 2 is fixedly installed on the bottom surface of the case body 1, and a mounting box 3 is fixedly installed in the middle of the left and right side walls of the case body 1, and a lifting slot 4 is provided inside the mounting box 3. A rectangular handle 5 is slidably inserted on the top of the lifting slot 4, and an elastic telescopic clamping part 6 is provided at the lower end of the rectangular handle bar 5. A clamping slot 7 for clamping the elastic telescopic clamping part 6 is provided on the rear side surface of the inner wall of the lifting slot 4. The number of the clamping slots 7 is several and evenly distributed longitudinally, and a traction assembly 8 for driving the elastic telescopic clamping part 6 is provided at the upper end of the rectangular handle bar 5. The opposite surfaces of the two rectangular handle bars 5 are fixedly installed with front and rear symmetrical extension plates 10 of the case body 1, and a rebound rotating handle 11 is provided between the opposite surfaces of the two front and rear opposite extension plates 10, and an L-shaped storage slot 9 for accommodating the rectangular handle bar 5 and the extension plate 10 is provided on the top surface of the case body 1.

[0027] More specifically, squeezing the traction assembly 8 drives the elastic telescopic engaging member 6 to move relative to the slot 7. When the elastic telescopic engaging member 6 slides into the slot 7, the rectangular handle 5 is fixed. When the elastic telescopic engaging member 6 slides out of the slot 7, the rectangular handle 5 can be raised and lowered, and the height of the upper horizontal part of the rectangular handle 5 can be adjusted to a comfortable height for the user to hold. When the rectangular handles 5 on both sides rise to the same height, the rebound rotating handle 11 is rotated to a vertical state, and the left and right rebound rotating handles 11 are grasped together to apply force to the left and right rectangular handles 5 at the same time, so that the traction force on the box body 1 is uniform, thereby avoiding tipping over due to uneven force during the moving process of the box body 1, reducing the inconsistent direction of friction caused by the changing rotation direction of the universal wheel 2, and making the process of moving the box body 1 more labor-saving.

[0028] The elastic telescopic engaging member 6 includes a slide groove 601, which is opened at the lower end of the longitudinal part of the rectangular handle bar 5. An upper wedge block 602 is slidably installed on the inner wall surface of the slide groove 601, and a lower wedge block 604 is fitted on the bottom surface of the upper wedge block 602. The lower wedge block 604 is slidably inserted into the surface of the rectangular handle bar 5 and slidably engaged in the slot 7. A first spring 603 is fixedly installed on the side surface of the lower wedge block 604 away from the slot 7. One end of the first spring 603 away from the lower wedge block 604 is fixedly installed on the inner wall surface of the slide groove 601, and the traction component 8 is used to drive the upper wedge block 602 to rise and fall.

[0029] Specifically, the first spring 603 is used to pull the lower wedge block 604 to the side away from the slot 7. The traction component 8 continuously applies a downward force to the upper wedge block 602 in a natural state. The upper wedge block 602 uses the inclined surface to apply a force opposite to the force of the first spring 603 to the lower wedge block 604, and the reverse force is greater than the traction force of the first spring 603, so that the lower wedge block 604 is stably inserted in the slot 7. When the traction component 8 applies force and pulls the upper wedge block 602 upward, the force of the upper wedge block 602 on the lower wedge block 604 gradually decreases, and the lower wedge block 604 slides away from the slot 7 under the traction of the first spring 603, thereby releasing the fixation of the rectangular handle 5, so that the rectangular handle 5 can slide freely up and down.

[0030] The traction assembly 8 includes a spring groove 801, which is opened on the bottom surface of the horizontal part on the upper side of the rectangular handle bar 5. A push rod 802 is slidably installed on the inner wall surface of the spring groove 801, and a limiting groove 803 is opened inside the push rod 802. An insertion rod 805 is fixedly installed on the top surface of the inner wall of the spring groove 801, and a limiting block 804 is fixedly installed on the bottom surface of the insertion rod 805. The insertion rod 805 is slidably inserted into the top wall of the push rod 802, and the limiting block 804 is slidably installed on the inner wall surface of the limiting groove 803. A second spring 806 is fixedly connected between the top surface of the push rod 802 and the top surface of the inner wall of the spring groove 801. The second spring 806 is sleeved on the outside of the insertion rod 805. A connecting rod 807 is fixedly installed on the bottom surface of the push rod 802. The connecting rod 807 slides through the top surface of the inner wall of the slide groove 601, and the bottom surface of the connecting rod 807 is fixedly connected to the top surface of the upper wedge block 602.

[0031] Specifically, holding the upper horizontal part of the rectangular handle 5 and the push rod 802, the push rod 802 moves upward, driving the connecting rod 807 to move upward, and then driving the upper wedge block 602 to move upward, so that the lower wedge block 604 retracts into the inside of the slide groove 601. The second spring 806 exerts a downward force on the push rod 802 in a natural state. When the push rod 802 is released, the push rod 802 is reset downward under the action of the second spring 806, driving the upper wedge block 602 to reset, so that the lower wedge block 604 slides and is inserted into the card slot 7 again, completing the fixation of the rectangular handle 5. The cooperation of the insertion rod 805, the limit block 804 and the limit slot 803 is used to improve the stability of the lifting and lowering of the push rod 802, thereby improving the stability of the telescopic engagement control of the lower wedge block 604.

[0032] The upper horizontal portion of the rectangular handle 5 and the push rod 802 are both located in the L-shaped receiving groove 9.

[0033] Specifically, the L-shaped receiving groove 9 is used to receive the rectangular handle 5 and the push rod 802, thereby ensuring the aesthetic appearance and effectively preventing the rectangular handle 5 from being lifted or slid due to accidental touch.

[0034] The rebound rotating handle 11 includes a rotating rod 111, which is rotatably installed between the opposite surfaces of two front and rear extension plates 10. The rotating rod 111 is arranged on the end surface of the extension plate 10 away from the rectangular handle 5. A pull ring 112 is fixedly installed on the surface of the rotating rod 111, and a torsion spring 113 is fixedly connected between the front and rear side surfaces of the pull ring 112 and the opposite surfaces of the extension plate 10.

[0035] Specifically, after rotating the pull rings 112 on both sides to a vertical state, the two pull rings 112 can be grasped at the same time to achieve synchronous and uniform force application on the left and right sides of the box body 1, thereby improving the stability of the movement of the box body 1. In the process of rotating the pull ring 112 to a vertical state, the rotating rod 111 rotates synchronously, and the torsion spring 113 is deformed. When the pull ring 112 is no longer grasped, the pull ring 112 rotates back to a horizontal state under the action of the deformation recovery force of the torsion spring 113.

[0036] When the pull ring 112 is in a horizontal state, the entire pull ring 112 is located in the L-shaped receiving groove 9 .

[0037] Specifically, the L-shaped receiving groove 9 is used to receive the extension plate 10 and the pull ring 112 in a horizontal state, so that the outer surface of the box body 1 has no protrusions, which is more convenient for transportation and improves the convenience and safety when stacking the boxes 1.

[0038] In summary: after the rectangular handles 5 on both sides rise to the same height, rotate the rebound rotating handle 11 to a vertical state, and grasp the left and right rebound rotating handles 11 together, so that force can be applied to the left and right rectangular handles 5 at the same time, so that the traction force on the box 1 is uniform, thereby avoiding the box 1 from tipping over due to uneven force during the movement process, reducing the inconsistent direction of friction caused by the changing rotation direction of the universal wheel 2, and making the process of moving the box 1 more labor-saving.

[0039] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed for the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-trolley structure for a trolley case, characterized in that: The invention comprises a box body (1), a universal wheel (2) is fixedly installed on the bottom surface of the box body (1), a mounting box (3) is fixedly installed on the middle of the left and right side walls of the box body (1), a lifting slot (4) is provided inside the mounting box (3), a rectangular handle (5) is slidably inserted on the top of the lifting slot (4), an elastic telescopic engaging member (6) is provided at the lower end of the rectangular handle (5), a slot (7) for engaging the elastic telescopic engaging member (6) is provided on the rear side of the inner wall of the lifting slot (4), and the slot (7) is provided with a plurality of slots. ) are multiple and evenly distributed longitudinally, the upper end of the rectangular handle (5) is provided with a traction assembly (8) for driving the elastic telescopic engaging member (6), the opposite surfaces of the two rectangular handles (5) are fixedly mounted with front-to-back symmetrical extension plates (10) of the box body (1), a rebound-type rotating handle (11) is provided between the opposite surfaces of the two front-to-back opposite extension plates (10), and the top surface of the box body (1) is provided with an L-shaped receiving groove (9) for accommodating the rectangular handle (5) and the extension plate (10).

2. The double-trolley structure of a trolley case according to claim 1, characterized in that: The elastic telescopic engaging member (6) includes a slide groove (601), the slide groove (601) is opened at the lower end of the longitudinal part of the rectangular handle bar (5), an upper wedge block (602) is slidably installed on the inner wall surface of the slide groove (601), a lower wedge block (604) is provided on the bottom surface of the upper wedge block (602), the lower wedge block (604) is slidably inserted into the surface of the rectangular handle bar (5) and slidably engaged in the slot (7), a first spring (603) is fixedly installed on the side surface of the lower wedge block (604) away from the slot (7), and one end of the first spring (603) away from the lower wedge block (604) is fixedly installed on the inner wall surface of the slide groove (601), and the traction component (8) is used to drive the upper wedge block (602) to rise and fall.

3. The double-trolley structure of a trolley case according to claim 2, characterized in that: The traction assembly (8) includes a spring groove (801), the spring groove (801) is provided on the bottom surface of the horizontal portion on the upper side of the rectangular handle (5), a push rod (802) is slidably mounted on the inner wall surface of the spring groove (801), a limiting groove (803) is provided inside the push rod (802), an insertion rod (805) is fixedly mounted on the top surface of the inner wall of the spring groove (801), a limiting block (804) is fixedly mounted on the bottom surface of the insertion rod (805), and the insertion rod (805) is slidably mounted on the top wall of the push rod (802). The limit block (804) is slidably mounted on the inner wall surface of the limit groove (803); a second spring (806) is fixedly connected between the top surface of the push rod (802) and the top surface of the inner wall of the spring groove (801); the second spring (806) is sleeved on the outside of the insertion rod (805); a connecting rod (807) is fixedly mounted on the bottom surface of the push rod (802); the connecting rod (807) is slidably arranged through the top surface of the inner wall of the slide groove (601); the bottom surface of the connecting rod (807) is fixedly connected to the top surface of the upper wedge block (602).

4. The double-trolley structure of a trolley case according to claim 3, characterized in that: The upper end transverse portion of the rectangular handle (5) and the push rod (802) are both located in the L-shaped receiving groove (9).

5. The double-trolley structure of a trolley case according to claim 1, characterized in that: The resilient rotating handle (11) comprises a rotating rod (111), which is rotatably mounted between opposite surfaces of two front and rear extension plates (10), and the rotating rod (111) is arranged on an end surface of the extension plate (10) away from the rectangular handle (5). A pull ring (112) is fixedly mounted on the surface of the rotating rod (111), and a torsion spring (113) is fixedly connected between the front and rear side surfaces of the pull ring (112) and the opposite surface of the extension plate (10).

6. The double-trolley structure of a trolley case according to claim 5, characterized in that: When the pull ring (112) is in a horizontal state, the entire pull ring is located in the L-shaped receiving groove (9).

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