CN203674437U

CN203674437U - A-type USB plug without metal outer covering, USB device and electronic device

Info

Publication number: CN203674437U
Application number: CN201420027354.0U
Authority: CN
Inventors: 李东声
Original assignee: Tendyron Technology Co Ltd
Current assignee: Tendyron Technology Co Ltd
Priority date: 2014-01-16
Filing date: 2014-01-16
Publication date: 2014-06-25
Anticipated expiration: 2024-01-16

Abstract

The utility model discloses an A-type USB plug without a metal outer covering, a USB device and an electronic device. The A-type USB plug comprises a plug body (2). One side of the plug body (2) is provided with an electrical contact (3); the other side of the plug body (2) is provided with at least two spring sheets (4) projecting out of a surface; when the plug body (2) is inserted into a USB interface, the spring sheets (4) are deformed, a rebound force crimps the electrical contact (3) on the connection contact inside the USB interface; and the rear end of one spring sheet (4) from the at least two spring sheets (4) is provided with a grounding spring (41). According to the utility model, the metal spring sheets are added to the A-type USB plug without the metal outer covering, so that the bonding force and reliability of connection are increased, and the connection reliability when the A-type USB plug is connected with the USB interface can be ensured for a long time; the metal spring sheets are additionally provided with the grounding spring so as to realize a grounding function and prevent the damage caused by static electricity to electronic components; and only one metal spring sheet is grounded, so that the risk of simultaneous grounding is avoided.

Description

Without A type USB plug, USB device and the electronic equipment of the outer quilt of metal

Technical field

The utility model relates to technical field of electronic products, relates in particular to a kind of A type USB plug, USB device and electronic equipment without the outer quilt of metal.

Background technology

At present, the small-sized mobile electronic device using in people's daily life is very many, as: palmtop PC, mobile phone, sound (depending on) player, USB flash disk and intelligent cipher equipment (also referred to as Electronics Cryptographic Keys, Key, possesses electronic signature functionality and/or dynamic token function) etc. frequently.Above-mentioned small-sized electronic equipment need to be connected to come swap data with other the electronic equipment (as computer) that is connected by external interface conventionally, to realize its set electric function, for example,, by USB(Universal Serial Bus, USB) interface, audio interface etc.

USB interface has many kinds, modal is exactly use in PC that flat, be called A type USB interface, there are 4 lines the inside, pegging graft according to whom, who is divided into male and female interface, general electronic equipment to be connected, as on USB flash disk, intelligent cipher equipment or connecting line be public mouthful, also claim USB plug; What be connected the upper band of electronic equipment (as computer) is female mouthful, also claims USB socket.

Be the version without the A type USB plug of the outer quilt of metal as shown in Figures 1 and 2, the body 1 of electronic equipment to be connected is provided with plug body 2, as shown in Figure 2, the electric contact 3 of the electrical connection that plug body 2 one sides are provided with, and another side is level and smooth surface (as shown in Figure 1), without any structure, directly insert USB socket.Certainly, the body 1 of the electronic equipment to be connected in Fig. 1 also can replace with connecting line, for example, common for mobile phone being connected to the usb data line on computer.

Because plug connection number of times is frequent or USB interface factors of limit life often can cause USB plug and USB socket Joint failure, lose linkage function, affect the utilization of external equipment; And, be easier to anti-insertedly without the USB plug ratio of the outer quilt of metal, cause the pin short circuit of USB socket, cause USB Joint failure, thereby cannot transmit data by USB interface.

Utility model content

The utility model provides a kind of A type USB plug, USB device and electronic equipment without the outer quilt of metal, at least to solve because plug connects USB plug and the USB socket Joint failure that number of times is frequent or USB interface factors of limit life causes, and be easier to anti-inserted without the USB plug ratio of the outer quilt of metal, cause the pin short circuit of USB plug, cannot transmit by USB interface the problem of data.

The technical solution of the utility model is specifically achieved in that

A kind of A type USB plug without the outer quilt of metal, described A type USB plug is located on the body 1 of electronic equipment to be connected or is connected on described body 1 by connecting line, for being connected with the USB socket being connected on electronic equipment, described A type USB plug comprises plug body 2, described plug body 2 is arranged on described body 1 or the rear end of described plug body 2 is provided with connecting line, and plug body 2 one sides are provided with the electric contact 3 of electrical connection; Described plug body 2 opposite sides are provided with at least two spring leafs 4 that protrude surface; Plug body 2 is inserted in USB socket by its front end, and spring leaf 4 is out of shape, and bounce is crimped on electric contact 3 on the connecting terminal in USB socket; The rear end of a spring leaf 4 in described at least two spring leafs 4 is provided with grounding elastic part 41.

Described spring leaf 4 comprises flexure strip 42 and stator 43, stator 43 is embedded in the mounting groove 5 of plug body 2, flexure strip 42 is fixedly connected with stator 43 near the front portion of plug body 2 front extreme directions, and flexure strip 42 comprises low early and high after rake 420, the angle of inclination of rake 420 is 20 °～30 °; Described grounding elastic part 41 is fixedly connected with the rear end of described stator 43, or described grounding elastic part 41 is the formation that extends back of described stator 43.

Rake 420 front ends of described flexure strip 42 are bent downwardly and extend into the bending auxiliary retention portion 421 of front end, and the bottom of the bending auxiliary retention portion 421 of front end is fixed in plug body 2.

Rake 420 rearward end of described flexure strip 42 are bent downwardly the rear end bent support portion 422 that extends into; Rear end bent support portion 422 is free end.

Described rear end bent support portion 422 comprises the bending of two places, and the first bend 423 is bent downwardly along rake 420 rear ends, then extends back, then is bowed downward to the second bend 424, the second bend 424 lower end to mounting groove 5 bottom lands.

The rake 420 of described flexure strip 42 is provided with salient point 425.

Described stator 43 is one time punching molded structure with flexure strip 42.

The height of protrusion plug body 2 outer surfaces of described spring leaf 4 is 1～1.5mm.

Described spring leaf 4 has two, is arranged in parallel.

A kind of USB device, comprises above-mentioned any A type USB plug without the outer quilt of metal and is connected to the tree lace of described A type USB plug rear end, on the holding wire in described tree lace, is wound with conductor.

A kind of electronic equipment, comprises above-mentioned any A type USB plug without the outer quilt of metal and the electronic equipment body being connected with described A type USB plug.

The technical scheme being provided by above-mentioned the utility model can be found out, in the A type USB plug of the utility model embodiment quilt outside without metal, increase metal clips, adhesion while connection to increase, increase connection reliability, when USB plug is connected with USB socket, can ensure for a long time the reliability of its connection, greatly improve the life and reliability connecting.Simultaneously, on metal clips, increase grounding elastic part, make metal clips to be grounded function by the ground wire in the body 1 of the connecting line that is connected with USB plug or electronic equipment to be connected, when thereby guarantee USB plug and USB socket plug together, linkage function is safe and reliable, avoids the damage of static to electronic component; And only there is a metal clips ground connection, can avoid the simultaneously risk of ground connection (simultaneously ground connection in the situation that, if USB plug is anti-inserted, can cause short circuit at metal clips) of metal clips.

In addition, on the holding wire in tree lace, be wound with conductor, make USB device possess function of shielding, ensure that the independence of A type USB plug linkage function is reliable, avoid the interference with all the other electronic components.

Brief description of the drawings

In order to be illustrated more clearly in the technical scheme of the utility model embodiment, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain other accompanying drawings according to these accompanying drawings.

Fig. 1 is the main TV structure schematic diagram of the existing A type USB plug without the outer quilt of metal;

Fig. 2 is the backsight structural representation of the existing A type USB plug without the outer quilt of metal;

The main TV structure schematic diagram of the A type USB plug without the outer quilt of metal that Fig. 3 provides for the utility model embodiment;

The structural representation of the spring leaf of the A type USB plug without the outer quilt of metal that Fig. 4 provides for the utility model embodiment;

The main TV structure schematic diagram of the spring leaf of the A type USB plug without the outer quilt of metal that Fig. 5 provides for the utility model embodiment;

The plan structure schematic diagram of the spring leaf of the A type USB plug without the outer quilt of metal that Fig. 6 provides for the utility model embodiment;

The schematic top plan view of the spring leaf of the A type USB plug without the outer quilt of metal that Fig. 7 provides for the utility model embodiment;

The structural representation of the real use state of the A type USB plug without the outer quilt of metal that Fig. 8 provides for the utility model embodiment.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment.Based on embodiment of the present utility model, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to protection range of the present utility model.

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

Embodiment mono-

The main TV structure schematic diagram of the A type USB plug without the outer quilt of metal that Fig. 3 provides for the utility model embodiment, TV structure schematic diagram is identical with Fig. 2 thereafter, can be with reference to figure 2.As shown in Figure 3, the A type USB plug without the outer quilt of metal that the present embodiment provides is located on the body 1 of electronic equipment to be connected or is connected to (Fig. 3 only shows USB plug and is located at the situation on the body 1 of electronic equipment to be connected) on body 1 by connecting line, for being connected with the USB socket being connected on electronic equipment, and then transmit data etc.The structure of A type USB plug specifically comprises plug body 2, plug body 2 is arranged on body 1 or the rear end of plug body 2 is provided with connecting line (Fig. 3 only shows plug body 2 and is arranged on the situation on body 1), plug body 2 one sides are provided with the electric contact 3(of electrical connection with reference to figure 2), plug body 2 opposite sides are provided with at least two spring leafs 4 that protrude surface; Plug body 2 is inserted in USB socket by its front end, and spring leaf 4 is out of shape, and bounce is crimped on electric contact 3 on the connecting terminal in USB socket, increase the adhesion while connection, electric contact 3 is connected closely with the connecting terminal in USB socket, improves connection reliability, ensure the reliability of its connection.

In the present embodiment, the rear end of a spring leaf 4 at least two spring leafs 4 is provided with grounding elastic part 41, and as shown in Fig. 3 dotted portion, concrete structure as shown in Figure 4.At the upper grounding elastic part that increases of metal clips (being spring leaf 4), make metal clips to be grounded function by the ground wire in the body 1 of the connecting line that is connected with USB plug or electronic equipment to be connected, when thereby guarantee USB plug and USB socket plug together, linkage function is safe and reliable, avoids the damage of static to electronic component; And only there is a metal clips ground connection, can avoid the simultaneously risk of ground connection (simultaneously ground connection in the situation that, if USB plug is anti-inserted, can cause short circuit at metal clips) of metal clips.Certainly, the shape of grounding elastic part 41 does not limit, it can be shape (can reduce costs, enhance productivity) as shown in Figure 4, also can be by stator 43 extend back form the identical parts of the width with stator 43, or other shapes, as long as can be connected and be grounded function with the ground wire in electronic equipment body or the ground wire in connecting line.In practical application, grounding elastic part 41 is that user can't see, and is encapsulated in plug body 2 inside.

As Fig. 4, Fig. 5, shown in Fig. 6 and Fig. 7, spring leaf 4 also comprises flexure strip 42 and stator 43, stator 43 is embedded in the mounting groove 5 of plug body 2, flexure strip 42 is fixedly connected with stator 43 near the front portion of plug body 2 front extreme directions, simultaneously, can be with reference to figure 7, in figure, grid part is stator 43, oblique line part is flexure strip 42, it is the part on stator 43 that bonding pad 44 can be understood as, also can be understood as the part on flexure strip 42, in this example, described stator 43 is one time punching molded structure with flexure strip 42, bonding pad 44 connects as one stator 43 and flexure strip 42.Certainly, between stator 43 and flexure strip 42, can be also the structure of welding or riveted joint, be all protection ranges of the present utility model.

As shown in Figure 4, grounding elastic part 41 is fixedly connected with the rear end of stator 43, or grounding elastic part 41 is stator 43 formation that extends back.Concrete, the ground wire in the body of the connecting line being connected with USB plug or electronic equipment to be connected 1 is incorporated on grounding elastic part, to realize the grounding function of metal clips, ensure that connection is safe and reliable, avoid the damage of static to electronic component.

Concrete, the front of flexure strip 42 refers to the direction near plug body 2 front ends, rear refers to the rightabout in front, the front portion of flexure strip 42 refers to the part of flexure strip 42 entirety near front, can be understood as front 1st/3rd, anterior, centre 1st/3rd, middle part, rear 1st/3rd, rear portion.Flexure strip 42 comprises low early and high after rake 420, and the angle of inclination of rake 420 is 20 °～30 °.Concrete rake 420 is located at the middle front part of flexure strip 42 entirety, and sloping portion plays guide effect, and can make plug easier.

Rake 420 front ends of flexure strip 42 are bent downwardly and extend into the bending auxiliary retention portion 421 of front end, and the bottom of the bending auxiliary retention portion 421 of front end is fixed in plug body 2, and fixing mode is to be generally pressed into or one-shot forming when injection moulding.Play the auxiliary fixing effect with supporting, avoid flexure strip 42 front ends too thin, affect useful life.

Rake 420 rear ends of flexure strip 42 are bent downwardly the rear end bent support portion 422 that extends into; Rear end bent support portion 422 is free end, and when flexure strip 42 is out of shape, rear end can be moved slightly backward, avoids flexure strip 42 to be out of shape excessive generation plastic deformation, causes inefficacy.Warp architecture ensures the intensity of spring leaf 4, ensures the size to fit of elastic force and the useful life of spring leaf 4; The structure of rear end bending contributes to form stronger elastic force, the metal position that is simultaneously bent downwardly metal clips head can avoid the A type USB plug plug without the outer quilt of metal time or afterbody be subject to USB socket scratch and make spring leaf 4 that plastic deformation occur and lost efficacy may.The overall structure of this spring leaf 4 can make flexure strip 42 before distortion, have good precompressed in addition, has enough elastic force.

Rear end bent support portion 422 comprises the bending of two places, the first bend 423 is bent downwardly along rake 420 rear ends, extend back again, be bowed downward to again the second bend 424, the second bend 424 lower end are to mounting groove 5 bottom lands, referring to Fig. 3 or Fig. 7, in this example, stator 43 rear portions are bent into " Z " type downwards, so the second bend 424 lower end are to concordant with stator 43 rear portions, also mounting groove 5 bottom lands of having arrived, and in practical structures stator 43 play supporting flexure strip 42 act on, not necessarily require stator 43 rear portions to bend downwards, so the second bend 424 lower end to mounting groove 5 bottom lands are concrete requirements here, certainly whether contacting mounting groove 5 bottom lands all can, as long as ensure that the initial stage of the compression travel of spring leaf 4 is exactly that flexure strip 42 rear ends are moved backward instead of moved down.This structure can spring leaf 4 initial stage of compression travel just have enough bounces, avoid excesssive gap and spring leaf 4 is out of shape and in little situation, does not keep certain elastic force.

In this example, the height of protrusion plug body 2 outer surfaces of described spring leaf 4 is 1～1.5mm, specifically with reference to " d " in figure 8.The deformation space that ensures flexure strip 42, has enough deformation stroke, can eliminate unnecessary build-up tolerance, and the fit clearance that assembling produces all can, by the deformation space of flexure strip 42 " absorption ", ensure the accuracy that plug coordinates.Meanwhile, the rake 420 of described flexure strip 42 can also be provided with convex salient point 425.Salient point 425 place's contact-making surfaces are little, further increase the pressure between contact-making surface, ensure the reliability connecting.

In addition, the spring leaf 4 described in this example has two, is arranged in parallel.In such cases, only have a spring leaf 4 to be provided with grounding elastic part 41(as shown in Figure 4), another spring leaf 4 does not need to arrange grounding elastic part; Can certainly be provided with grounding elastic part by two spring leafs, when USB plug is connected with body or connecting line, only the ground wire in body or connecting line is guided to one of them grounding elastic part, another grounding elastic part does not use, and can avoid equally the metal clips risk of ground connection simultaneously.Certainly in the situation that structure allows, use one or more also can, are all protection ranges of the present utility model.If be set to three spring leafs 4, can be only by one of them ground connection, and in the time that chip architecture of the spring position is set, should be noted that the spring leaf that prevents ground connection contacts with D-pin with the D+ of USB socket simultaneously in anti-inserted situation, causes short circuit.

Embodiment bis-

The utility model also provides a kind of USB device, comprises the A type USB plug without the outer quilt of metal described in embodiment mono-, and is connected to the tree lace of described A type USB plug rear end, on the holding wire in tree lace, is wound with conductor.

On holding wire in tree lace (be above-described embodiment described in connecting line), be wound with conductor, make USB device possess function of shielding, ensure that the independence of A type USB plug linkage function is reliable, avoid the interference of all the other electronic components.Conductor can be copper cash or aluminium foil etc.

Embodiment tri-

The utility model also provides a kind of electronic equipment, comprises the A type USB plug without the outer quilt of metal described in embodiment mono-and the electronic equipment body being connected with described A type USB plug.Concrete electronic equipment can be palmtop PC, mobile phone, sound (depending on) player, USB flash disk and intelligent cipher equipment frequently, or even connecting line is all protection ranges of the present utility model.

Although illustrated and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment in the situation that not departing from principle of the present utility model and aim in scope of the present utility model, amendment, replacement and modification.Scope of the present utility model is by claims and be equal to and limit.

Claims

1. the A type USB plug without the outer quilt of metal, described A type USB plug is located at the body (1) of electronic equipment to be connected and is gone up or be connected on described body (1) by connecting line, for being connected with the USB socket being connected on electronic equipment, described A type USB plug comprises plug body (2), described plug body (2) is arranged on described body (1) rear end upper or described plug body (2) and is provided with connecting line, plug body (2) one sides are provided with the electric contact (3) of electrical connection, it is characterized in that:

Described plug body (2) opposite side is provided with at least two spring leafs (4) that protrude surface; Plug body (2) is inserted in USB socket by its front end, spring leaf (4) distortion, and bounce is crimped on electric contact (3) on the connecting terminal in USB socket;

The rear end of the spring leaf (4) in described at least two spring leafs (4) is provided with grounding elastic part (41).

2. the A type USB plug without the outer quilt of metal according to claim 1, it is characterized in that, described spring leaf (4) comprises flexure strip (42) and stator (43), stator (43) is embedded in the mounting groove (5) of plug body (2), flexure strip (42) is fixedly connected with stator (43) near the front portion of the front extreme direction of plug body (2), and flexure strip (42) comprises low early and high after rake (420), the angle of inclination of rake (420) is 20 °～30 °;

Described grounding elastic part (41) is fixedly connected with the rear end of described stator (43), or described grounding elastic part (41) be described stator (43) extend back form.

3. the A type USB plug without the outer quilt of metal according to claim 2, it is characterized in that, rake (420) front end of described flexure strip (42) is bent downwardly and extends into the bending auxiliary retention portion of front end (421), and the bottom of the bending auxiliary retention portion of front end (421) is fixed in plug body (2).

4. the A type USB plug without the outer quilt of metal according to claim 2, is characterized in that, rake (420) rear end of described flexure strip (42) is bent downwardly the rear end bent support portion (422) that extends into; Rear end bent support portion (422) is free end.

5. the A type USB plug without the outer quilt of metal according to claim 4, it is characterized in that, described rear end bent support portion (422) comprises the bending of two places, the first bend (423) is bent downwardly along rake (420) rear end, extend back again, be bowed downward to the second bend (424), the second bend (424) lower end is to mounting groove (5) bottom land again.

6. the A type USB plug without the outer quilt of metal according to claim 2, is characterized in that, the rake (420) of described flexure strip (42) is provided with salient point (425).

7. the A type USB plug without the outer quilt of metal according to claim 2, is characterized in that, described stator (43) is one time punching molded structure with described flexure strip (42).

8. the A type USB plug without the outer quilt of metal according to claim 1, is characterized in that, the height of protrusion plug body (2) outer surface of described spring leaf (4) is 1～1.5mm.

9. according to the A type USB plug without the outer quilt of metal described in any one in claim 1 to 8, it is characterized in that, described spring leaf (4) has two, is arranged in parallel.

10. a USB device, is characterized in that, comprise the A type USB plug without the outer quilt of metal as described in claim 1 to 9 any one and be connected to as described in the tree lace of A type USB plug rear end, on the holding wire in described tree lace, be wound with conductor.

11. 1 kinds of electronic equipments, is characterized in that, comprise as described in claim 1 to 9 any one without the A type USB plug of the outer quilt of metal and with as described in the electronic equipment body that is connected of A type USB plug.