Adjustable self-locking hasp of rotational molding packaging box

Abstract

The utility model discloses an adjustable self-locking hasp of a rotational molding packing box, which comprises a box door mounting base, a box body mounting base, a hook seat, a U-shaped screw rod, a limiting rod, an operating handle and a tension eccentric seat, the hook seat is connected to the box door mounting base, the tension eccentric seat is connected to the box body mounting base, and the U-shaped screw rod is connected to the U-shaped screw rod. The operating handle is hinged to the tension eccentric seat and movably connected with the limiting rod, the two ends of the U-shaped screw penetrate through the two ends of the limiting rod respectively and are connected with adjusting nuts respectively, and a plurality of mounting holes are formed in the box door mounting base and the box body mounting base respectively. The adjustable self-locking hasp for the rotational molding packaging box is simple in structure, convenient to use and practical, the pre-tightening force between the U-shaped screw rod and the base is controlled by adjusting the adjusting nut, the hasp structure is optimized, the locking effect is improved, and the pre-tightening force can be adjusted when the hasp is used.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of self -locking hasp, specifically relates to a roll -to -roll packaging box adjustable self -locking hasp. BACKGROUND

[0002] At present, the packaging box prepared by mainstream roll -to -roll process needs to realize the airtightness of the inner -packed product, and the design of the tight connection of the cover and the box body becomes an important issue. As a commonly used locking mechanism, hasp is widely used in various industries, and its main types include: stainless steel flat hasp, heavy -duty military hasp, long -type hasp, spring hasp, adjustable hasp, carriage hasp, bridge hasp, luggage hasp, self -locking hasp and the like. However, although the existing hasp is convenient, fast and can be repeatedly opened / closed, due to the deviation of the cover and the box body of the large -scale roll -to -roll packaging box, the conventional hasp is not suitable, and the conventional hasp is not easy to lock under various working conditions of the packaging box after locking, therefore, the large -scale roll -to -roll packaging box urgently needs a self -locking hasp with adjustability, self -locking and the like. SUMMARY

[0003] The utility model solves the technical problem to provide a roll -to -roll packaging box adjustable self -locking hasp, and the simple structure is convenient and practical, the pre -tightening force between the U -type screw rod and the base is controlled through the adjustment adjusting nut, the hasp structure is optimized to improve the locking effect, and the pre -tightening force can be adjusted during use.

[0004] A roll -to -roll packaging box adjustable self -locking hasp, including box door installation base, box body installation base, hook seat, U -type screw rod, limiting rod, operating handle and tension eccentric seat, the hook seat is connected on the box door installation base, the tension eccentric seat is connected on the box body installation base, the operating handle is hinged on the tension eccentric seat and is movably connected with the limiting rod, the both ends of the U -type screw rod respectively pass through the both ends of the limiting rod and are respectively connected with the adjusting nut, a plurality of installation holes are formed in the box door installation base and the box body installation base.

[0005] Further, the box body installation base is provided with a lock table, and the operating handle is provided with a lock hole matched with the lock table.

[0006] Further, the lock table is provided with a pressure ball on one side, and the lock hole is provided with a limiting groove matched with the pressure ball on the inner wall.

[0007] Further, the hook seat is provided with a hook groove matched with the U -type screw rod.

[0008] Further, the installation hole is provided with a screw for installing the self -locking hasp.

[0009] Beneficial effects:

[0010] (1) The adjustable self-locking buckle of the rotational molding packaging box can adjust the pre-tightening force between the U-shaped screw rod and the base through the adjusting nut, realizes the optimization of the buckle structure, improves the locking effect, and can adjust the pre-tightening force during use.

[0011] (2) The adjustable self-locking buckle of the rotational molding packaging box can adjust the locking force according to the differences between individual rotational molding packaging boxes during use, and increases a self-locking mechanism to adapt to various working conditions. The buckle is simple to install, convenient and fast to open / close repeatedly, and can effectively protect the articles in the packaging box.

[0012] (3) The adjustable self-locking buckle of the rotational molding packaging box can ensure effective locking of the rotational molding packaging box, flexible opening of the buckle, and no loosening or inclination or deformation affecting the combination. The structure is simple and reliable, and easy to assemble. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 is a top view structural schematic diagram of the self-locking buckle;

[0014] Fig. 2 is a side view structural schematic diagram of the self-locking buckle;

[0015] 1-box door installation base, 2-box body installation base, 3-screw, 4-hook seat, 5-U-shaped screw rod, 6-limiting rod, 7-adjusting nut, 8-operation handle, 9-locking table, 10-locking hole, 11-pressure ball, 12-hook groove, 13-tension eccentric seat. DETAILED DESCRIPTION

[0016] The embodiments of the present application will be further described below with reference to the drawings.

[0017] Example 1

[0018] As Figs. 1-2The utility model discloses a rotomolded packing box adjustable self -locking hasp, including box door installation base 1, box body installation base 2, hook seat 4, U type screw rod 5, limiting rod 6, operating handle 8 and tension eccentric seat 13, hook seat 4 is connected on box door installation base 1, tension eccentric seat 13 is connected on box body installation base 2, operating handle 8 is articulated on tension eccentric seat 13 and is movably connected with limiting rod 6, U type screw rod 5 both ends are respectively passed through the both ends of limiting rod 6 and are connected with adjusting nut 7 respectively, box door installation base 1 and box body installation base 2 are all set up with a plurality of mounting holes, box body installation base 2 is installed with lock table 9, and the lock hole 10 that is cooperated with lock table 9 is set up on operating handle 8, the one side of lock table 9 is provided with pressure ball 11, and the inner wall of lock hole 10 is provided with the pressure ball 11 cooperation with limiting groove, hook seat 4 is set up with the hook groove 12 cooperation with U type screw rod 5, the mounting hole is provided with the screw 3 for installing self -locking hasp.

[0019] The box door installation base 1 and box body installation base 2 of self -locking hasp are installed on the box door and the box body respectively through screw 3, before the self -locking hasp is buckled, the middle part of U type screw rod 5 is close to or away from limiting rod 6 by rotating adjusting nut 7, to control the pre-tightening force between U type screw rod 5 and box door installation base 1, then the middle part of U type screw rod 5 is hooked in hook groove 12, and the force is applied to operating handle 8, so that operating handle 8 rotates along the hinge point of tension eccentric seat 13, so that the buckle enters the locking state, at this time, U type screw rod 5 and hook groove 12, limiting rod 6 and operating handle 8 and the hinge point of tension eccentric seat 13 form a triangle, and the end of operating handle 8 away from tension eccentric seat 13 contacts box body installation base 2, to realize the purpose of buckle locking, when operating handle 8 rotates the buckle and locks, lock table 9 is inserted into lock hole 10 synchronously, and the pressure ball 11 on lock table 9 slides into the limiting groove on the inner wall of lock hole 10 to realize the purpose of buckle anti-loosening self -locking.

[0020] The specific embodiments of the utility model are described in detail above, but it is only as an example, and the utility model is not limited to the above description specific embodiments. For those skilled in the art, any equivalent modification and replacement to the utility model are also in the scope of the utility model. Therefore, equivalent transformation and modification made without departing from the spirit and scope of the utility model are all covered in the scope of the utility model.

Claims

1. An adjustable self-locking latch for a rotomolded packaging box, characterized in that: It includes a door mounting base (1), a body mounting base (2), a hook seat (4), a U-shaped screw (5), a limiting rod (6), an operating handle (8), and a tension eccentric seat (13). The hook seat (4) is connected to the door mounting base (1), the tension eccentric seat (13) is connected to the body mounting base (2), the operating handle (8) is hinged to the tension eccentric seat (13) and movably connected to the limiting rod (6), the two ends of the U-shaped screw (5) pass through the two ends of the limiting rod (6) and are respectively connected to adjusting nuts (7), and the door mounting base (1) and the body mounting base (2) are each provided with several mounting holes.

2. The adjustable self-locking buckle for a rotomolded packaging box as described in claim 1, characterized in that: A locking platform (9) is installed on the mounting base (2) of the box body, and a locking hole (10) is provided on the operating handle (8) to cooperate with the locking platform (9).

3. The adjustable self-locking buckle for a rotomolded packaging box as described in claim 2, characterized in that: A pressure ball (11) is provided on one side of the lock platform (9), and a limiting groove is provided on the inner wall of the lock hole (10) to cooperate with the pressure ball (11).

4. The adjustable self-locking buckle for a rotomolded packaging box as described in claim 3, characterized in that: The hook seat (4) is provided with a hook groove (12) that cooperates with the U-shaped screw (5).

5. An adjustable self-locking buckle for a rotomolded packaging box as described in claim 1 or 4, characterized in that: The mounting hole is provided with a screw (3) for installing a self-locking latch.

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