CN102092518A

CN102092518A - Oblique fastening type sealing connection mechanism for plastic box and cover

Info

Publication number: CN102092518A
Application number: CN2009101554846A
Authority: CN
Inventors: 王忠平
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-12-12
Filing date: 2009-12-12
Publication date: 2011-06-15

Abstract

The invention discloses an oblique fastening type sealing connection mechanism for a plastic box and a cover, which comprises a box body and a box cover, wherein the opening of the box body is provided with outward flanges; a seal groove is formed in the box cover and a seal ring is arranged in the seal groove; the seal ring is sealed with the opening of the box body; the edge of the box cover is provided with fins; and fasteners are arranged on the fins. The oblique fastening type sealing connection mechanism is characterized in that: each flange comprises a convex ring and a groove; each fastener comprises a fastening root vertical to each fin, and an oblique fastening head; the fastening root is matched with the convex ring; and the oblique fastening head is contacted with the groove. The oblique fastening type sealing connection mechanism has the main characteristics that: the fins on the edge of the box cover are provided with the fastening roots vertical to the fins and oblique fastening heads; and when the box body is covered by the box cover, the oblique fastening heads are inserted into the grooves of the flanges of the box body, so that the box cover is fastened with the box body firmly, the fins do not slip off, and the airtightness of the plastic box is ensured. Moreover, the grooves are easy to form on the flanges of the box body, the appearance is attractive, the oblique fastening heads are easily manufactured by a mold and easily demolded, and the mold investment is saved.

Description

The slope clasping type of plastic casing and the lid mechanism that is tightly connected

Technical field

The slope clasping type that the present invention relates to plastic casing and the lid mechanism that is tightly connected is mainly used in various bonbon boxs, the crisper, belongs to daily living article.

Background technology

Bonbon box, cracker box and crisper, in order to reach sealing effectiveness, orthodox method is a force fit or be threaded between lid and box, and described force fit is exactly that the box mouth adopts flush fit with lid, tightens mutually, and it is cumbersome to open box; Being threaded is only applicable to circular box mouth and lid, exists to make and use inconvenience.So generally use fin turning-fastening type structure in recent years, promptly be shaped on clamp at box mouth outer wall, be shaped on the fin of pulling at the edge of lid, fin is shaped on button or hole, by button or hole with make box and cover mutual leak-tight joint after clamp cooperates.The advantage of this technology: one is to use conveniently; The 2nd, be applicable to the box of different shape (side, circle etc.), especially on the fin at lid edge, be shaped on the hole, after living clamp by borehole jack, it is firm to connect, but it must be that monomer protrusion box body could cooperate with the hole that the shortcoming of its existence has clamp, and not only consumptive material is many, and volume is increased, injection moulding adds the demoulding in man-hour difficulty, mould-manufacturing expense height.And existing button cooperates with clamp to exist and makes straight button on the fin, straight button with skid off easily after clamp cooperates, the fastening weak effect influences sealing property.

Summary of the invention

The objective of the invention is in order to overcome the shortcoming of prior art, button and box body oral area groove fit on a kind of lid fin are provided, fastening is effective, the slope clasping type that guarantees the plastic casing of sealing property and the lid mechanism that is tightly connected.

The be tightly connected technical scheme of mechanism of the slope clasping type of plastic casing of the present invention and lid is: comprise box body and lid, oral area at box body is shaped on outside flange, in lid, be shaped on seal groove, seal ring is installed in the seal groove, seal ring seals mutually with the box body oral area, edge at lid is shaped on fin, fin is shaped on button, it is characterized in that described flange comprises protruding circle and groove, described button comprises and mutually perpendicular button root of fin and oblique discount, the button root matches oblique discount and contact grooves with protruding circle.

The slope clasping type that the invention discloses a kind of plastic casing and the lid mechanism that is tightly connected, its principal character is to be shaped on the fin at lid edge and mutually perpendicular button root of fin body and oblique discount, behind the tray cover upper box cover, oblique discount is inserted in the groove of box body flange, it is very firm to fasten, fin can not skid off, and has guaranteed the sealing property of plastic casing.And groove is that the moulding of box body self flange is easy, good looking appearance, and oblique discount mould-manufacturing is convenient, and the demoulding is easy, the mould reduced investment.Therefore the distinguishing feature of the technical program is to be shaped on the fin oblique discount, and the groove fit of oblique discount and box body flange has obtained unexpected effectiveness.

The slope clasping type of plastic casing of the present invention and the lid mechanism that is tightly connected, the height H of described fin is the 15-30 millimeter, the length D of oblique discount is the 2-8 millimeter.Fin has certain height to help pulling, and oblique discount has enough length, guarantees to fasten effect.The oblique angle α of the parallel lines C of described fin and oblique discount is 30 °-60 °.Determine angle with rational, promptly help operation, can guarantee again to cooperate.Described oblique discount middle part is an arc-shaped notch.The oblique discount of arcs of recesses mouth is fit to round box and lid.The fin at described lid edge is 4 or 5 or 6.The few manufacturing cost of fin is economized, and fin fastens good reliability more, specifically decides according to the size of box.The top of described lid is shaped on handle.There has been handle easy to use.

Description of drawings

Fig. 1 is the A-A direction schematic cross-section of Fig. 5;

Fig. 2 is the local enlarged diagram in E place of Fig. 1;

Fig. 3 is the local enlarged diagram in F place of Fig. 1;

Fig. 4 is the be tightly connected schematic perspective view of mechanism of the slope clasping type of plastic casing of the present invention and lid;

Fig. 5 is the be tightly connected schematic top plan view of mechanism of the slope clasping type of plastic casing of the present invention and lid;

Fig. 6 is that oblique discount is shaped on arcs of recesses mouth scheme drawing;

Fig. 7 is fin height and oblique discount length scheme drawing.

The specific embodiment

The slope clasping type of plastic casing of the present invention and the lid mechanism that is tightly connected, as Fig. 1-shown in Figure 7, comprise box body 1 and lid 2, oral area at box body is shaped on outside flange 11, in lid 2, be shaped on seal groove 21, seal ring 22 is installed in the seal groove, seal ring 22 seals mutually with box body 1 oral area, be shaped on fin 3 at the edge of lid 2, fin 3 is shaped on button, it is characterized in that described flange 11 comprises protruding circle 12 and groove 13, and described button comprises and fin 3 mutually perpendicular button root 31 and oblique discounts 32, button root 31 matches with protruding circle 12, and oblique discount 32 contacts with groove (13).Its principal character is to be shaped on the fin 3 at lid 2 edges and mutually perpendicular button root 31 of fin 3 bodies and oblique discount 32, after box body 1 covers lid 2, oblique discount 32 is inserted in the groove of box body flange 11 13, it is very firm to fasten, fin 3 can not skid off, and has guaranteed the sealing property of plastic casing.And groove 13 is that 11 moulding of box body self flange are easy, good looking appearance, and oblique discount 32 mould-manufacturives are convenient, and the demoulding is easy, the mould reduced investment.Therefore the distinguishing feature of the technical program is to be shaped on the fin 3 oblique discount 32, and oblique discount 32 cooperates with the groove 13 of box body flange 11, has obtained unexpected effectiveness.The height H of described fin 3 is the 15-30 millimeter, and the length D of oblique discount 32 is the 2-8 millimeter.Fin 3 has certain height to help pulling, and oblique discount 32 has enough length, guarantees to fasten effect, and in actual product, the height H of fin 3 is the 20-25 millimeter, and the length D of oblique discount 32 is the 5-6 millimeter.The oblique angle α of the parallel lines C of described fin 3 and oblique discount 32 is 30 °-60 °.Determine angle with rational, promptly help operation, can guarantee again to cooperate, α is 40 °-45 ° in actual product.Described oblique discount 32 middle parts are arc-shaped notch 33.The oblique discount 32 of arcs of recesses mouth 33 is fit to round box 1 and lid 2.The fin 3 at described lid 2 edges is 4 or 5 or 6.Fin 3 few manufacturing costs are economized, and fin fastens good reliability more, specifically decides according to the size of box.The top of described lid 2 is shaped on handle 5.There has been handle 5 easy to use.

Claims

1. the slope clasping type of plastic casing and the lid mechanism that is tightly connected, comprise box body (1) and lid (2), oral area at box body is shaped on outside flange (11), in lid (2), be shaped on seal groove (21), seal ring (22) is installed in the seal groove, seal ring (22) seals mutually with box body (1) oral area, be shaped on fin (3) at the edge of lid (2), fin (3) is shaped on button, it is characterized in that described flange (11) comprises protruding circle (12) and groove (13), described button comprises and mutually perpendicular button root of fin (3) (31) and oblique discount (32) that button root (31) matches with protruding circle (12), and oblique discount (32) contacts with groove (13).

2. the slope clasping type of plastic casing as claimed in claim 1 and the lid mechanism that is tightly connected is characterized in that the height (H) of described fin (3) is the 15-30 millimeter, and the length (D) of oblique discount (32) is the 2-8 millimeter.

3. the slope clasping type of plastic casing as claimed in claim 1 and the lid mechanism that is tightly connected, the parallel lines (C) that it is characterized in that described fin (3) is 30 °-60 ° with the oblique angle (α) of oblique discount (32).

4. as the slope clasping type of any described plastic casing and lid among the claim 1-3 mechanism that is tightly connected, it is characterized in that described oblique discount (32) middle part is arc-shaped notch (33).

5. the slope clasping type of plastic casing as claimed in claim 1 and the lid mechanism that is tightly connected, the fin (3) that it is characterized in that described lid (2) edge is 4 or 5 or 6.

6. the slope clasping type of plastic casing as claimed in claim 1 and the lid mechanism that is tightly connected is characterized in that the top of described lid (2) is shaped on handle (5).