CN2306590Y - Integrated injection mould structure for stress releaser of cable connector - Google Patents

Abstract

The utility model relates to an integrated injection mould structure for a stress releaser of a cable connector. The utility model comprises a lower mould and an upper mould, and the interior surfaces of the upper and the lower moulds are all provided with a containing groove which is extended transversely and can contain a fixed part which is used for being fixedly connected with the front half part of the connector. The interior surface of the mould is also provided with a mould cavity channel which can contain the rear half part of the connector and one part of the cable, and a proper space is formed at the periphery. So injection materials flow in the space to form a stress releaser.

Description

The global formation injection mould structure of cable joint stress releaser

The utility model relates to injection molding mould structure, relates in particular to the global formation injection mould structure of cable joint stress releaser.

Along with the prosperity of 3C industry, computer and telecommunication equipment are more and more universal, and it is indispensable that in fact these equipment have become in common people's daily life institute.In general, these equipment must see through suitable network and be connected to each other, or in conjunction with suitable ancillary equipment.At present common computer or telecommunication be similar to shown in Fig. 1 basically with cable joint, this joint is indicated with Ref. No. 10 in Fig. 1, it includes the housing 11 of a hard, and front end is provided with a plurality of parallel guide slots (not demonstrating), respectively is provided with a conducting strip in it.Then be provided with a big opening 12 at the rear of housing 11, can insert in it, make that each the bar lead in the cable 14 corresponds respectively to a slice conducting strip for a cable 14 that includes many leads.Each sheet conducting strip all has a sharp-pointed portion, can be under by outside application of force effect the perverse insulated hull of wearing its corresponding lead, and then contact with electrically conductive core in it.When this joint 10 being inserted in its corresponding socket 16, a plurality of conducting strips 18 in the socket 16 can touch exposing partly of conducting strip in the plug 10 respectively because of elastic reaction, and then form at the two and to be electrically connected.

The joint 10 of this kind pattern normally utilizes the mode of buckle to be secured in the socket 16.Be provided with the clamping part 20 of a projection on the housing 11 of joint 10, can be inserted into the corresponding clamping part that is fastened on socket inside in the socket 16 by joint 10, an elastic arm 22 is then extended at the rear of clamping part 20, and it is used for removing the snap action of clamping part 20.

Because each the bar lead in the joint is all only by simple mechanical system, as penetrating in the lead, or cooperate clamping or frictional force effect to wait lead fixed to joint with conducting strip.This kind structure very easily in impaired or fracture, makes conducting strip and lead be separated under the effect of external force.Therefore pull impairedly for the joint of avoiding this kind pattern because of external force, can a kind of stress releaser be set at cable and connector engages place, it can be used to bear the tensile stress from the cable, avoids the engagement relationship between conducting strip and lead impaired.Promptly demonstrate the situation that stress releaser 23 is set on joint 10 in Fig. 2, an end of this stress releaser 23 is coated on the cable 14, and the other end is then coating the some of the housing 11 of joint, to bear the stress that transmits on cable 14.

Now using in addition, also the someone utilizes the part that is coating joint housing 11 on the stress releaser 23 to cover and protect this elastic arm 22, and is for example disclosed in the utility application case the 81213465th (No. 202827, notification number).In this patent case; it provides a kind of " computer or telephone line joint protective jacket "; its similar is in stress releaser; also be to coat cable in the use simultaneously with the one end; the other end is then coating the some of joint housing; to cover in the opening that housing rear current supply cable inserts; be used for preventing that dust from entering in the housing; and the front end on its protective jacket is provided with an inner fovea part 24 (see figure 2)s; can be used to cover in the housing elastic arm; to prevent elastic arm by false touch and being connected between releasable joint and socket, it is impaired also can to protect elastic arm to avoid simultaneously.Therefore only the used protective sleeve of this kind is not combined into integral body with cable and joint housing basically, can't bear the stress between cable and the housing, except the function of dustproof and protection elastic arm, and can't prevent that cable from pullling on housing unclamped because of external force.

Therefore it is necessary this stress releaser firmly is combined in respectively on cable and the housing, to bear Stress Transfer therebetween.A kind of mode of head it off is with injection moulding method; the stress releaser injection is formed on cable and the housing; and by when injection; robust structure relation between its injection material and cable and housing; make formed stress releaser not only have function dustproof and the protection elastic arm, also can bear the stress between cable and joint housing simultaneously.

Similarly injection moulding method is already present in the manufacturing of general cable plug; yet in general injection moulding operation; its employed mould all can only directly be coated on plug or the joint for the material of injection, also can't form the indent position of the elastic arm that is used for protecting in the above-mentioned power lug therebetween.If the used injecting method that utilizes, then injection material will be filled between elastic arm and the housing, make elastic arm can't press by the structure of removing between joint and socket, or can't form the indent position that covers in elastic arm on stress releaser.

Therefore in view of this, main purpose of the present utility model promptly is that a kind of injection molding mould structure will be provided, it can form the stress releaser of said structure with injection moulding method on cable joint, and thus formed stress releaser not only can securely be combined on the cable, pressure during its injection simultaneously also can force injection material partly to enter in the opening of housing rear, and then combine with housing very securely, and can bear the two Stress Transfer, and can cover in its rear opening, prevent that dust from entering in it, and recess that forms also can be used to protect elastic arm and effect thereof on it, therefore can overcome the puzzlement that is run in the existing skill.

For the utility model is described more maturely, below with conjunction with figs., a preferred embodiment of the present utility model is described, and in the accompanying drawings:

Fig. 1 is a used cable joint and connection cable thereon.

Fig. 2 is a used cable joint, which is provided with a stress releaser, is used for protecting this joint to avoid because of the infringement from the stress of cable.

Fig. 3 is the three-dimensional exploded view of mould structure of the present utility model, wherein can only only demonstrate a cable among this figure for manufacturing two stress releasers on two cables simultaneously.

Fig. 4 is the situation that die assembly of the present utility model gets up, and only its patrix does not demonstrate, for its inner structure of clear view.

Fig. 5 is the profile after die assembly of the present utility model gets up, and demonstrates the relation between cable and mould.

To cooperate Fig. 3-5 that mould structure of the present utility model is described now, in Fig. 3, demonstrate exploded view of the present utility model, wherein be to represent mould of the present utility model with Ref. No. 30, mould 30 of the present utility model includes a counterdie 32 and a relative patrix 34, this patrix 34 is provided with two outstanding alignment pins 36, can when covering to counterdie 32, patrix 34 penetrate in the location hole 38 on the counterdie 32, for upper and lower mould 32 and 34 accurately being located and combining.

In each of counterdie 32 and patrix 34, be formed with multiple tracks low groove 40 and upper groove 42 respectively on relative to each other the surface, its position and shape are to work in coordination, can be when patrix 34 and counterdie 32 be combined, constitute jointly in order on cable 14, to form the die cavity of stress releaser 23.These grooves 40 are to extend at horizontal storage tank 44 places near mould the place ahead from the position with 42, extend to the rear of mould always, its grade has the ccontaining position 46 of cable and 48 at counterdie 32 and patrix 34 near place, mould rear, can when inserting in the die cavity, hold by joint 10 cable 14 that goes out from joint 10 rear extensions, as shown in Figure 4.In an illustrated embodiment, be respectively equipped with two road grooves 42 and 40 on patrix 34 and the counterdie 32, can process in a shot and make two stress releasers 23 in the operation.Yet except two road grooves, also can use together or the above groove in two roads.

On patrix 34 and counterdie 32, be respectively equipped with running channel 49, can be for injection material via being injected into to die cavity.This is for known to general in the injection moulding processing, so repeat no more.

The fixture 50 that in the horizontal storage tank 44 in the place ahead of mould, can insert a joint housing 11, as shown in Figure 4.This fixture 50 includes lower member 52 and upper member 54, and lower member 52 is provided with a plurality of recesses 56 down, corresponding to the low groove on the counterdie 32 40, and also is provided with corresponding upper notch 58 on the upper member 54, corresponding to the upper groove on the patrix 34 42.Upper member 54 is provided with two location holes 60, then be provided with two alignment pins 62 on the lower member 52, the two cooperation can accurately be alignd and combines going up lower member, and corresponding upper notch 58 and following recess 56 then can be for forming the first half that is not coated by stress releaser 23 on the ccontaining housing 11 of energy.

For on the stress releaser 23 that so penetrates, forming the inner fovea part 24 of the elastic arm 22 that can cover joint 10, extend a protuberance 64 in recess 56 down from each of the lower member 52 of fixture 50, its inside is inner concavity, can be for the elastic arm 22 on the housing case 11, its outer surface then is the low groove 40 interior (see figure 5)s that projection enters to counterdie 32, and with the inwall of low groove 40 at a distance of a segment distance, this distance does not have sizable thickness at the inner fovea part 24 that penetrates release 23, and because the material of injection generally has the elasticity of appropriateness, therefore when the demoulding, can moderately be out of shape through inner fovea part 24, promptly desirable housing 11 be taken out in the following recess 56 of lower member 52 this stress releaser 23.

In the injection moulding operation is carried out, the material of injection can flow in the die cavity of being made up of low groove 40 and upper groove 42 via running channel 49 under the effect of pressure, and then be centered around on the latter half of periphery of cable 14 and housing 11, and injection material also can flow in housing 11 volume inside by the rear opening 12 via housing 11 under the effect of pressure, therefore can closely be combined on the housing 11.

In sum, the utility model is through the setting of fixture 50, can effectively joint 10 be fixed in the die cavity, and the protuberance 64 that stretches out on the fixture 50 more can be used to hold the elastic arm 22 on the joint 10 in the injection operation process, it still can be pressed after injection by freely, and can form the inner fovea part 24 that is used for hiding elastic arm 22 on the stress releaser 23.This kind design does not see in the joint or the injection moulding operation of other form plug of this kind pattern before this, therefore not only has practicality, more has novelty concurrently.

The above only is a preferred embodiment of the present utility model; do not breaking away under creation of the present utility model and the design spirit; this die for injection molding still might can be done multiple variation, and these variations all should be considered as the claimed scope of the utility model.

Claims (3)

1. the global formation injection mould structure of a cable joint stress releaser; it is characterized in that can be used to injection molding one have buckle and trip with the joint of elastic arm on one of formation coating the latter half of and stress releaser of the latter half of extended cable some of this joint certainly of this joint; this stress releaser has an inner fovea part; can cover in and protect this elastic arm; this mould structure includes a counterdie and a patrix; on each inner surface of upper and lower mould, be equipped with the fixedly storage tank of one horizontal expansion; can supply in order to a ccontaining fixture that is used for fixing the joint first half; on these inner surfaces, also be provided with the die cavity conduit; extend on another relative side from this storage tank; and these die cavity conduits can constitute the some of latter half of and this cable that can ccontaining joint when upper and lower mould combines; and form a suitable space between the wall of and cable and die cavity latter half of at joint; can flow in it and form stress releaser via being located at running channel on the upper and lower mould for injecting forming material with required form; this fixture includes upper member and lower member; be formed with the ccontaining fixedly recess of a plurality of joints on the inner surface of the two; respectively for the die cavity conduit in the upper and lower mould; can be for holding the joint first half within it; and when combining, the joint first half is fixed; on each recess of lower member, all extend a protuberance; it extends into to the die cavity conduit of counterdie; and with the counterdie die cavity conduit general spacing of being separated by; flow into for injection material and to form the inner fovea part that is used for covering in the joint elastic arm on this stress releaser in it; the inner surface of this protuberance then is invaginated type, and the elastic arm that can hold joint within it.

2. mould structure according to claim 1 is characterized in that these die cavity conduits are equipped with the ccontaining position of cable in this another side edge that is close to upper and lower mould, can not be the part that stress releaser enveloped for holding in the cable.

3. mould structure according to claim 1, it is characterized in that this joint is provided with an opening at its rear, but current supply cable inserts in it, and form the gap betwixt, this gap can be injection material and fills up in the injection operation, and then injection molding stress releaser securely can be combined on the joint.

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