CN202112442U

CN202112442U - Plastic hasp

Info

Publication number: CN202112442U
Application number: CN2011201801850U
Authority: CN
Inventors: 陈朗
Original assignee: GUANGZHOU MINGLANG LIFE PRODUCTS MANUFACTURING Co Ltd
Current assignee: GUANGZHOU MINGLANG LIFE PRODUCTS MANUFACTURING Co Ltd
Priority date: 2011-05-31
Filing date: 2011-05-31
Publication date: 2012-01-18
Anticipated expiration: 2021-05-31

Abstract

The utility model discloses a plastic hasp, which comprises a main face and an auxiliary face which is provided with a lint face and can be adhered to the main face. A plurality of groups of barbs are arranged on the main face, and at least one barb in each group of barbs structurally comprises a base part extending from the main face and a barb tooth connected with the base part. The connection portion of the base part and the connecting part is in smooth transition, and the base part is gradually diminished from the connecting part to the barb tooth. The barb tooth is in arc-bent shape, and the end of the barb tooth is round. The main face and the barb which are flexible plastic members are integrated in injection molding mode. The main face is made of flexible plastics so that the main face and the barb can be easily manufactured in injection molding mode. The barb is designed into an arc-bent barb tooth which can hook lint fibers easily. The barb tooth and the main face are connected through the base part which is gradually diminished. Therefore, the integrated structure is easy to demold during the injection molding process, and the barb tooth is difficult to damage, break and deform.

Description

A kind of plastics hasp

Technical field

The utility model relates to a kind of plastics hasp.

Background technology

Hasp is commonly called as VELCRO or double buckle, by the nylon manufacturing, extensively waits the central attaching parts of industrial goods as weaving as the one of which.It generally has one and has the generatrix of many barbs and the sub-face of a band line suede; The big parts of generatrix and peripheral hardware are fixed, and sub-face is pressed when being pressed onto on the generatrix, because the pile loop that line suede forms is caught on by barb; So sub-face just can be fitted with generatrix and can not come off; Have only firmly with son towards outside lift, it just can tear off from generatrix, the basic connection principle of Here it is hasp.For pile loop is caught on, the generatrix of band barb is all made with nylon.What some dirt pushed away now cuts somebody's hair; Be exactly this notion, adopt the connecting mode of the velcro dirt of cleaning sheet and plastics matter of the usefulness bottom plate connecting of cutting somebody's hair that will mop floor, particularly according to hasp; It is the sub-face of velcro of sewing on band line suede on the top of cleaning sheet; At the cut somebody's hair velcro generatrix of lower surface adhesive tape barb of base plate of dirt,, will clean sheet and cut somebody's hair with dirt and be connected to then with this primary and secondary face compacting.But because in actual cleaning course, usually will dirt cut somebody's hair to be immersed in to rinse in the water and wash, take out then and be pressed in push-and-pull back and forth on the ground, scrub, velcro just be penetrated in the generatrix because of moisture content easily and it is come off like this; Moreover also waste time and energy very much toward the generatrix that is adhesively fixed on dirt is cut somebody's hair base plate, be not suitable for large-scale production.

Some plastics hasp is when remaining with the sub-face of knitting wool now, adopts injection molding way to produce generatrix; Because the change of material; Make hasp have water-fast function, yet the but not a duck soup of generatrix with densely covered barb is produced in injection moulding, if imitate the velcro hook of conventional bending shape reluctantly; But often because the front end of barb is crooked and can't die sinking, die sinking is the drawing crack barb; Perhaps for die sinking and manufacturing easily, the hook tooth head on its generatrix is all triangular in shape and hard straight, easy to break, and yields is low, moreover its corresponding size is bigger, and the number of distribution hook tooth is less in unit are, causes the adhesive effect of primary and secondary face poor.Cutting somebody's hair with the dirt that has adopted this plastics hasp is example, and the cleaning sheet is coming off after repeatedly using easily, and the hook tooth is easily broken.In order to reduce fraction defective easy to break, again the height of hook tooth is heightened usually, but this makes more sub-face not closely bond with generatrix that sub-face more is prone to come off.

The utility model content

The purpose of the utility model is for a kind of plastics hasp is provided, and it has generatrix is to adopt the plastics manufacturings, but the primary and secondary face bonding after the difficult drop-off characteristics of separating.

The solution that the utility model solves its technical problem is:

A kind of plastics hasp; Comprise generatrix and have the sub-face line matte, can be bonding with generatrix; Said generatrix is provided with some groups of barbs; The structure that has a barb in every group at least is to be divided into base portion that from generatrix, extends out and the hook tooth that connects with base portion, and the point of attachment of said base portion and generatrix is that rounding off and base portion begin to dwindle gradually to the hook tooth from this point of attachment; Said hook tooth is bowing and it is terminal for circular; Said generatrix and barb are the flexible plastic member, the two integrated injection molding.

As the further improvement of technique scheme, the thickness of said generatrix is 1.5～1.8mm.

As the further improvement of technique scheme, the radius of the circular distal of said hook tooth is 0.15～0.20mm.

As the further improvement of technique scheme, the whole height of said barb is 1.6～1.8mm.

As the further improvement of technique scheme, be oriented laterally with the bending of said hook tooth, a plurality of hook tooth horizontal arrays constitute the barb groups.

As the further improvement of technique scheme, the bending direction of the hook tooth in the said barb group is in the same way, and each hook tooth equidistance array.

As the further improvement of technique scheme, the lateral separation of the terminal coupled position from itself and base portion of said hook tooth is 1.16～1.20mm.

As the further improvement of technique scheme, the tooth distance in the equidistance array of said hook tooth is 2.3～2.6mm.

As the further improvement of technique scheme, said barb group is array longitudinally, and the bending direction of the hook tooth in two groups of adjacent barb groups is opposite.

As the further improvement of technique scheme, vertical array of said barb group is the equidistance array, and the longitudinal pitch of two adjacent groups barb group is 0.4mm; The longitudinal thickness of every group of barb group is 0.4mm.

The beneficial effect of the utility model is: the utility model at first adopts the material of flexible plastic as generatrix; Make itself and barb be prone to produce through injection moulding process; Then barb is designed to the bowing hook tooth that easy hook is lived line suede fiber; Adopt the base portion of gradual change to connect between hook tooth and the generatrix, make overall structure easier demoulding in injection moulding is produced, and guaranteed that the hook tooth is not fragile, wreck, be out of shape.

In addition; The parameter that the utility model gathers each thread form, tooth distance, group has been made optimized design; The action of its injection moulding die sinking can not damaged thread form; And the barb quantity in the unit are is suitable, even guaranteed the generatrix of injection mo(u)lding, also can and sub-face between have powerful cementability.

The utility model design is accurate, and compact conformation is convenient for production simple and easy, and primary and secondary face adhesive property is good, is applicable to as plastic connection auxiliary to be widely used.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is the integral body partition sketch map of the utility model;

Fig. 2 is the generatrix vertical view of the utility model;

Fig. 3 is the A-A cross section enlarged drawing of Fig. 2, and base portion is represented in the position that wherein dotted line enclosed.

The specific embodiment

With reference to Fig. 1～Fig. 3; A kind of plastics hasp; Comprise generatrix 1 and have the sub-face 2 line matte, can be bonding with generatrix 1; Said generatrix 1 is provided with some groups of barbs 3, and having the structure of a barb 3 at least in every group is to be divided into base portion 11 that from generatrix 1, extends out and the hook tooth 12 that connects with base portion, and said base portion 11 is that rounding off and base portion 11 begin to dwindle gradually to hook tooth 12 from this point of attachment with the point of attachment of generatrix 1; Said hook tooth 12 is bowing and it is terminal for circular; Said generatrix 1 is the flexible plastic member with barb 3, the two integrated injection molding.Particularly, said flexible plastic member can be selected MODIFIED PP, PA, LDPE, but materials such as rubber or TPR should not choose, and also can not use ebonite.

Further as preferred embodiment, the thickness of said generatrix 1 is 1.5～1.8mm.Particularly, preferred generatrix 1 thickness is 1.8mm.

Further as preferred embodiment, the radius of the circular distal of said hook tooth 12 is 0.15～0.20mm.Particularly, preferably this radius is 0.18mm.

Further as preferred embodiment, the whole height of said barb 3 is 1.6～1.8mm.Particularly, the whole height of preferred barb 3 is 1.6mm.

Further as preferred embodiment, be oriented laterally a plurality of hook tooth 12 horizontal arrays formation barb groups 31 with the bending of said hook tooth 12.

Further as preferred embodiment, the bending direction of the hook tooth 12 in the said barb group 31 is in the same way, and each hook tooth 12 equidistance arrays.

Further as preferred embodiment, the lateral separation of the terminal coupled position from itself and base portion 11 of said hook tooth 12 is 1.16～1.20mm.Particularly, preferably this lateral separation is 1.18mm.

Further as preferred embodiment, the tooth distance in the equidistance array of said hook tooth 12 is 2.3～2.6mm.Particularly, preferably this tooth distance is 2.3mm.

Further as preferred embodiment, said barb group 31 is array longitudinally, and the bending direction of the hook tooth 12 in two groups of adjacent barb groups 31 is opposite.

Further as preferred embodiment, vertical array of said barb group 31 is the equidistance array, and the longitudinal pitch of two adjacent groups barb group 31 is 0.4mm; The longitudinal thickness of every group of barb group 31 is 0.4mm.

The preferred form of each above-mentioned parameter; Make barb 3 quantity in unit are (1 square centimeter) obtain suitable distribution; Be generally 45～50; So neither can make when injection moulding is produced owing to barb 3 overstocked processing mold, the demoulding difficulty of making of arranging, also can not make barb 3 distribute too sparse and make that the clasp joint dynamics is not enough, primary and secondary face adhesive effect is bad.

In the process that generatrix 1 injection moulding is produced, conventional relatively mould, it will have, and injection pressure is big, the dwell time is grown, lack these technological requirements cool time.Therefore, the die cavity of moulding generatrix 1 is designed as front mould, in die sinking, the cool time of barb 3 parts is the shortest like this, makes it have sufficient resilience time moulding hook tooth 12; Mould adopts and takes off structure by force, and only in this way, the cooling earlier of the temperature on hook tooth 12 tops just helps the shape that 12 recoveries of hook tooth are convexly curved behind the mould open/close.

The utlity model has multiple advantage; Being applied to dirt such as it cut somebody's hair last time; Sub-face 2 can directly be processed in the upper surface of cleaning sheet; Generatrix 1 as dirt the direct injection moulding of base plate of cutting somebody's hair produce, so just can cleaning sheet and the dirt base plate of cutting somebody's hair directly be bonded together, and wash through repeatedly soaking, rinsing, also difficult drop-off is scrubbed in push-and-pull; In addition, the plastics hasp has been saved the cost of assembling, has stopped the flimsy hidden danger of the employed bonding hook tooth of former bonding way, has improved the bonding efficient of cleaning sheet and dirt push pedal, has prolonged the service life that dirt pushes away.

More than be that preferred embodiments to the utility model specifies; But the invention is not limited to said embodiment; Those of ordinary skill in the art also can make all equivalent variations or replacement under the prerequisite of the utility model spirit, modification that these are equal to or replacement all are included in the application's claim institute restricted portion.

Claims

1. plastics hasp; Comprise generatrix (1) and have sub-face (2) the line matte, can be bonding with generatrix (1); Said generatrix (1) is provided with some groups of barbs (3); It is characterized in that: the structure that has a barb (3) in every group of barb (3) at least is to comprise base portion (11) that from generatrix (1), extends out and the hook tooth (12) that connects with base portion, the point of attachment of said base portion (11) and generatrix (1) be rounding off and base portion (11) certainly this point of attachment begin to dwindle gradually to hook tooth (12); Said hook tooth (12) is bowing and it is terminal for circular; Said generatrix (1) is the flexible plastic member with barb (3), the two integrated injection molding.

2. plastics hasp according to claim 1 is characterized in that: the thickness of said generatrix (1) is 1.5～1.8mm.

3. plastics hasp according to claim 1 is characterized in that: the radius of the circular distal of said hook tooth (12) is 0.15～0.20mm.

4. plastics hasp according to claim 1 is characterized in that: the whole height of said barb (3) is 1.6～1.8mm.

5. plastics hasp according to claim 1 is characterized in that: the bending with said hook tooth (12) is oriented laterally, and a plurality of barbs (3) horizontal array constitutes barb group (31).

6. plastics hasp according to claim 5 is characterized in that: the bending direction of the hook tooth (12) in the said barb group (31) is in the same way, and each hook tooth (12) equidistance array.

7. plastics hasp according to claim 6 is characterized in that: the lateral separation of the terminal coupled position from itself and base portion (11) of said hook tooth (12) is 1.16～1.20mm.

8. according to claim 6 or 7 described plastics hasps, it is characterized in that: said hook tooth (12) is with tooth distance 2.3～2.6mm equidistance array.

9. according to claim 5,6 or 7 described plastics hasps, it is characterized in that: said barb group (31) is array longitudinally, and the bending direction of the hook tooth (12) in adjacent two groups of barb groups (31) is opposite.

10. plastics hasp according to claim 9 is characterized in that: vertical array of said barb group (31) is the equidistance array, and the longitudinal pitch of two adjacent groups barb group (31) is 0.4mm; The longitudinal thickness of every group of barb group (31) is 0.4mm.