CN217806251U - Plastic box - Google Patents

Abstract

The utility model discloses a plastic box, which belongs to the technical field of injection molds and comprises an upper cover and a lower cover which are mutually matched, wherein the lower cover is provided with a first groove, a boss is arranged at the corresponding position of the first groove on the upper cover, and the boss rotates in the first groove to realize the opening and closing between the upper cover and the lower cover; the side surface of the boss is provided with a convex hull in a gap between the boss and the side surface of the first groove, and the depth of the convex hull is slightly larger than the depth of the gap. Through add the protruding package that the degree of depth is greater than the space degree of depth between boss side and the first recess side on the side of boss, when the upper cover rotate to and the lower cover between the contained angle be 90 degrees, the point contact takes place for the side of protruding package with first recess to increase the moving resistance of upper cover when rotating, prevent that the upper cover from dropping under the effect of self gravity and causing the tong, guaranteed going on smoothly of components and parts installation when having improved personnel's when the assembly safety.

Description

Plastic box

Technical Field

The utility model belongs to the technical field of injection mold, concretely relates to plastic box.

Background

An injection mold is a tool for producing plastic products; and is a tool for endowing the plastic product with complete structure and accurate dimension, and the plastic box is a tool which is often used in the injection molding process.

An existing plastic box is shown in fig. 1 and mainly comprises an upper cover and a lower cover, and in the process of assembling the upper cover and the lower cover, referring to fig. 2, a gap exists between the side surface of the upper cover and the lower cover, and the upper cover can freely fall under the action of self gravity, so that the installation of components in the box can be influenced while clamping hands.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a plastic box to propose the problem of current plastic box in the use among the solution above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme: a plastic box comprises an upper cover and a lower cover which are mutually matched, wherein a first groove is formed in the lower cover, a boss is arranged at a position, corresponding to the first groove, of the upper cover, and the boss rotates in the first groove to realize opening and closing of the upper cover and the lower cover;

one side of the boss is provided with a convex hull which is positioned in a gap between the side surface of the boss and the side surface of the first groove, and the depth of the convex hull is slightly larger than the depth of the gap.

Preferably, the boss is further provided with a control device for controlling the convex hull to move.

Preferably, the control device comprises a cavity arranged at the position of the convex hull and an elastic component arranged in the cavity and used for controlling the motion of the convex hull.

Preferably, the convex hull comprises a convex portion and a sliding portion sliding on the inner wall of the cavity.

Preferably, the elastic member is a spring.

Preferably, the first groove is provided with an anti-slip convex strip on the contact surface with the convex hull.

Preferably, the rotation of the boss with respect to the first recess is achieved by a rotation shaft.

Preferably, the number of the first grooves is two, and the two first grooves are symmetrically arranged on two sides of the lower cover.

Preferably, a second groove is arranged on the boss.

Preferably, the convex hull has a cross-sectional diameter of 2mm.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses an add the degree of depth and be greater than the convex closure of space degree of depth between boss side and the first recess side on the side of boss, when the upper cover rotate to and the lower cover between the contained angle be 90 degrees, the convex closure with the side emergence point contact of first recess to increase the moving resistance of upper cover when rotating, prevent that the upper cover from dropping under the effect of self gravity and causing the tong, guaranteed going on smoothly of components and parts installation when having improved personnel's when assembling safety.

2. The utility model discloses an add the convex closure in the side of boss, when opening the upper cover, the convex closure of upper cover can carry on spacingly to the rotation of upper cover for the biggest turned angle of upper cover is 135.

Drawings

FIG. 1 is a schematic view of a conventional box structure of the present invention;

FIG. 2 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic view of the overall structure of the present invention;

FIG. 4 is a schematic view of the box structure of the present invention;

FIG. 5 is a first cross-sectional view taken along line B-B of FIG. 4;

FIG. 6 is a sectional view taken along line B-B

FIG. 7 is an enlarged view of FIG. 6 at A;

fig. 8 is a schematic view of the overall structure of the present invention.

In the figure: 1. an upper cover; 2. a lower cover; 3. a first groove; 4. a boss; 5. a convex hull; 6. a rotating shaft; 7. a control device; 8. a cavity; 9. an elastic member; 10. a boss portion; 11. a sliding part; 12. anti-skid convex strips; 13. a second groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Referring to fig. 3-7, the present invention provides a technical solution: the utility model provides a plastic box, the main part includes upper cover 1 and lower cover 2 of mutual adaptation, be provided with first recess 3 on the lower cover 2 and upper cover 1 is provided with boss 4 in first recess 3's corresponding position department, lower cover 2 main part comprises bottom surface and side, first recess 3 sets up on lower cover 2 a side, preferably, first recess 3's quantity is two, and set up for the symmetry plane symmetry of lower cover 2, through boss 4 rotation in first recess 3, drive upper cover 1 and rotate around one side of lower cover 2, and then realize opening and shutting between upper cover 1 and the lower cover 2, wherein the rotation of boss 4 relative first recess 3 is realized through axis of rotation 6.

As can be seen from fig. 1, a gap exists between a side surface of the boss 4 and a side surface of the first groove 3, when the boss 4 rotates to a vertical position, that is, an included angle between the upper cover 1 and the lower cover 2 reaches 90 degrees, because a gap exists between a side surface of the first groove 3 and a side surface of the boss 4 at this time, resistance when the upper cover 1 rotates relative to the lower cover 2 is small, the upper cover 1 automatically falls down under the action of gravity of itself to cause a grip, the convex hull 5 is fixedly arranged on the side surface of the boss 4, preferably, the cross-sectional diameter of the convex hull 5 is 2mm, the depth of the convex hull 5 is slightly larger than the depth of the gap, when the boss 4 rotates to a vertical position, the convex hull 5 on the boss 4 and the side surface of the first groove 3 form a point contact, and then, movement resistance between the upper cover 1 and the lower cover 2 is increased, and movement resistance between the upper cover and the lower cover is larger than the falling gravity, so that the upper cover 1 is prevented from automatically falling down.

Further, as can be seen from the above description, in order to prevent the upper cover 1 from falling, the movement resistance caused by increasing the convex hull 5 should be greater than the gravity of the falling of the upper cover 1, and at this time, the depth of the convex hull 5 should be slightly greater than the size of the gap, but at this time, during the rotation of the upper cover 1, the friction between the convex hull 5 and the side surface of the first groove 3 is too large, which may cause damage to the first groove 3 and the convex hull 5 at the same time, and in order to reduce the damage, the control device 7 for controlling the movement of the convex hull 5 may be added on the boss 4, so as to reduce the damage while ensuring the movement resistance.

The control device 7 comprises a cavity 8 arranged at the position of the convex hull 5 and an elastic component 9 arranged in the cavity 8 and used for controlling the movement of the convex hull 5, preferably a spring is used as the elastic component 9, at the moment, the convex hull 5 comprises a protruding part 10 and a sliding part 11 which slides on the inner wall of the cavity 8 at the cavity 8, at the moment, when the protruding part 10 in the convex hull 5 is in contact with the side surface of the first groove 3, the convex hull 5 can move on the inner side of the cavity 8 under the action of external force and extrude the elastic component 9, when the boss 4 rotates to a vertical position, the convex hull 5 can generate extrusion force on the side surface of the first groove 3 under the action of the restoring force of the elastic component 9, and further generate resistance on the rotation between the upper cover 1 and the lower cover 2.

Further, in order to further improve the resistance of the upper cover 1 during the rotation process, the first grooves 3 are provided with anti-slip ribs 12 on the contact surface with the convex hulls 5.

Furthermore, the boss 4 is provided with a second groove 13, and the side surface of the boss 4 is provided with the second groove 13, so that raw materials used for processing can be reduced.

Furthermore, when the upper cover 1 is opened, the convex hull 5 on the upper cover 1 also plays a role in limiting, and the maximum rotation angle of the upper cover is 135 degrees.

Although 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 alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. A plastic box, its characterized in that: comprises that

The upper cover and the lower cover are matched with each other, a first groove is formed in the lower cover, a boss is arranged at a position, corresponding to the first groove, of the upper cover, and the boss rotates in the first groove to achieve opening and closing of the upper cover and the lower cover;

one side of the boss is provided with a convex hull, the convex hull is positioned in a gap between the side surface of the boss and the side surface of the first groove, and the depth of the convex hull is greater than that of the gap.

2. A plastic box according to claim 1, wherein: and the boss is also provided with a control device for controlling the convex hull to move.

3. A plastic box according to claim 2, wherein: the control device comprises a cavity arranged at the position of the convex hull and an elastic component arranged in the cavity and used for controlling the convex hull to move.

4. A plastic box according to claim 3, wherein: the convex hull comprises a convex part and a sliding part which slides on the inner wall of the cavity.

5. A plastic box according to claim 3, wherein: the elastic member is a spring.

6. A plastic box according to claim 1 or 4, wherein: the first groove and the contact surface of the convex hull are provided with anti-skid convex strips.

7. A plastic box according to claim 1, wherein: the rotation of the boss relative to the first groove is realized through a rotating shaft.

8. A plastic box according to claim 1, wherein: the number of the first grooves is two, and the two first grooves are symmetrically arranged on two sides of the lower cover.

9. A plastic box according to claim 1, wherein: and a second groove is formed in the boss.

10. A plastic box according to claim 1, wherein: the cross-sectional diameter of the convex hull is 2mm.

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