CN210489869U

CN210489869U - Fisheye terminal

Info

Publication number: CN210489869U
Application number: CN201921937275.2U
Authority: CN
Inventors: 牛林
Original assignee: Shenzhen West Point Precision Technology Co Ltd
Current assignee: Shenzhen West Point Precision Technology Co Ltd
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-05-08
Anticipated expiration: 2029-11-11

Abstract

The application relates to the technical field of high-speed backplane connectors and discloses a fisheye terminal, including fisheye terminal body, fisheye terminal body including base, guide part, with the district that inserts that the guide part is connected, with keep the district and set up that the base is connected insert the district with hole in the keep the district, be located the width of the hole pore wall in the district that inserts is less than and is located the width of the hole pore wall in keep the district. When the circuit board is inserted, the elastic resistance caused by the deformation of the hole wall of the inner hole of the insertion area is smaller, so that the insertion force is ensured to be as low as possible; when the fisheye terminal is pulled out from the circuit board, the inner hole wall of the holding area is wide and is not easy to deform, the pulling-out force is required to be as high as possible due to the fact that the elastic resistance is large when the fisheye terminal is pulled out, and the fisheye terminal can be stably fixed on the circuit board and is not easy to loosen from the circuit board. So set up, the size of the needle point end and root end, the hole of having solved current fisheye terminal is all symmetrical and the problem that the required power can not satisfy the requirement when inserting or extracting.

Description

Fisheye terminal

Technical Field

The application relates to the technical field of backplane connectors, in particular to a fisheye terminal.

Background

Communication connectors are often connected with a circuit board, and mainly have three connection modes, namely straight pin through hole welding, fisheye terminal perforation compression joint and flat pin flat pasting on the surface of the PCB. The fisheye terminal punching and crimping scheme is most widely applied and is increasingly applied to the field of automobile connectors because of great technical advantages of the fisheye terminal. The first is welding-free, so that the cost is lower, and the social trend of energy conservation and environmental protection is met. Secondly, the design of a bonding pad is not needed, more terminals can be arranged on the same occupied area, and the design requirement of high density of the existing product is met. Thirdly, the fisheye terminal can be easily pulled out and is convenient to maintain. However, the traditional symmetrical fisheye design cannot meet the requirements of low insertion force and high extraction force as much as possible in practical application scenes. The traditional fisheye terminal can cause too high insertion force in order to improve the pull-out force, and the fisheye terminal is easy to kneel legs to lose efficacy when in compression joint; the insertion force is reduced to cause too low an extraction force, and the connector is easily separated to cause system failure.

Therefore, how to solve the problem that the sizes of the needle tip end, the needle root end and the inner hole of the existing fisheye terminal are symmetrical, and the force required by the existing fisheye terminal during insertion or extraction cannot meet the requirement becomes an important problem to be solved by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

To overcome the problems in the related art at least to some extent, the present application aims to provide a fisheye terminal which can solve the problem that the sizes of the needle tip end, the root end and the inner hole of the existing fisheye terminal are symmetrical, so that the required force during insertion or extraction cannot meet the requirement.

The utility model provides a fisheye terminal, including fisheye terminal body, fisheye terminal body including basal portion, guide part, with the guide part be connected insert the district, with the keep zone that the basal portion is connected is in with the setting insert the district with hole in the keep zone is located the width of the hole pore wall in insert the district is less than and is located the width of the hole pore wall in keep zone.

Preferably, the fisheye terminal body further comprises a transition area, two ends of the transition area are respectively connected with the insertion area and the holding area, the transition area is provided with a through hole communicated with the inner hole, and the width of the hole wall of the through hole in the transition area is smaller than that of the hole wall of the inner hole in the holding area.

Preferably, the width of the inner bore at the insertion region is greater than the width of the inner bore at the retention region.

Preferably, the outer edge of the insertion region is symmetrical to the outer edge of the holding region.

Preferably, the outer edge of the holding region protrudes beyond the outer edge of the insertion region.

Preferably, the guide part comprises a pre-insertion region and a guide needle point, wherein the pre-insertion region is symmetrical to the base part, one end of the pre-insertion region is connected with the insertion region, and the other end of the pre-insertion region is connected with the guide needle point.

Preferably, the junction of the transition zone and the retention zone is in smooth transition, and the junction of the transition zone and the insertion zone is in smooth transition.

Preferably, the outer edges of the fisheye terminal body are provided with rounded corners.

Preferably, the width of the inner bore hole wall at the retention zone is greater than the width of the inner bore hole wall at the insertion zone by 10% of the width of the inner bore hole wall at the insertion zone.

Preferably, the fisheye terminal body further comprises a plastic limiting structure and a pin area located in the plastic sleeve, one end of the plastic limiting structure is connected with the base, and the other end of the plastic limiting structure is connected with the pin area.

The technical scheme provided by the embodiment of the application can have the following beneficial effects:

the application provides a fisheye terminal, which comprises a fisheye terminal body, wherein the fisheye terminal body comprises a base part, a guide part, a holding area connected with the base part, an inserting area connected with the guide part and inner holes arranged in the inserting area and the holding area, the base part is used for providing the strength of the terminal and preventing the terminal from buckling when being inserted into a circuit board, and the guide part is used for guiding the fisheye terminal so that the fisheye terminal is pre-inserted into the circuit board; the width of the inner hole wall of the insertion area is smaller than that of the inner hole wall of the holding area, namely the insertion area and the holding area of the fisheye terminal adopt asymmetric design, the inner hole wall of the insertion area is smaller than that of the holding area, when a circuit board is inserted, the elastic resistance caused by the deformation of the inner hole wall of the insertion area is smaller, and the insertion force as low as possible is ensured; when the fisheye terminal is pulled out from the circuit board, the hole wall of the inner hole in the holding area is wide and not easy to deform, and when the fisheye terminal is pulled out, the fisheye terminal has large elastic resistance and needs to be pulled out as high as possible, so that the fisheye terminal can be stably fixed on the circuit board and is not easy to loosen from the circuit board. So set up, this fisheye terminal has ensured that the insertion force can increase the holding power of fisheye terminal when as little as possible, has promoted the performance of this fisheye terminal, has solved the equal symmetry of size of the pinpoint end and root end, the hole of current fisheye terminal and can not satisfy the problem of requirement when inserting or extracting the required power.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Fig. 1 is a block diagram illustrating a fisheye terminal according to an exemplary embodiment.

In the figure:

201. guiding the needle tip; 202. a pre-insertion region; 203. an insertion region; 204. a transition zone; 205. a holding zone; 206. a base; 207. a plastic limiting structure; 208. a pin area; 209. a fish eye hole; 210. inner edges of the fisheye holes; 211. and (4) outer edges.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus consistent with certain aspects of the present application, as detailed in the appended claims.

Referring to fig. 1, the present embodiment provides a fisheye terminal, including a fisheye terminal body, where the fisheye terminal body includes a base 206, a guide part, a holding region 205 connected to the base 206, an insertion region 203 connected to the guide part, and an inner hole disposed in the insertion region 203 and the holding region 205, the base 206 is used to provide the strength of the terminal itself and prevent buckling when inserted into a circuit board, the guide part is used to guide the fisheye terminal so that the fisheye terminal is pre-inserted into the circuit board, when the circuit board is inserted, the guide part is pre-inserted into the circuit board, then the insertion region 203 is inserted into the circuit board, the hole wall and the inner hole of the insertion region 203 start to deform, generating an insertion force, and continuing to insert into the holding region 205 into the circuit board, and the hole wall and the inner hole of the holding region 205 deform to generate an insertion force; when the circuit board is pulled out, the holding area 205 is deformed to generate holding force, the holding force is maximum, the insertion area 203 is separated from the circuit board by continuously pulling out, the insertion area 203 is completely deformed, and the holding force is zero.

The width of the inner hole wall of the insertion area 203 is smaller than that of the inner hole wall of the holding area 205, that is, the inner hole wall of the insertion area 203 is thinner, and the inner hole wall of the holding area 205 is thicker, so that when a circuit board is inserted, the inner hole wall of the insertion area 203 is easily deformed by force (that is, the elastic resistance of the insertion area 203 caused by the deformation of the inner hole wall is smaller when the circuit board is inserted), the inner hole wall of the insertion area 203 can be deformed by using smaller force, the insertion force as low as possible is ensured, and the fisheye terminal is easily inserted into the circuit board; when the fisheye terminal is pulled out from the circuit board, the inner hole wall of the holding area 205 needs to be deformed by a larger force (namely, the elastic resistance caused by the deformation of the inner hole wall of the holding area 205 is larger) relative to the inner hole wall of the insertion area 203, so that the pulling-out force which is as high as possible is ensured, and thus, the fisheye terminal positioned in the circuit board is not easy to break away from the circuit board, the connection stability of the fisheye terminal and the circuit board is improved, and the performance of the fisheye terminal is improved.

So set up, the size of the needle point end and root end, the hole of having solved current fisheye terminal is all symmetrical and the problem that the required power can not satisfy the requirement when inserting or extracting.

In a preferred embodiment of this embodiment, the width of the inner hole in the insertion region 203 is greater than the width of the inner hole in the holding region 205, that is, the inner hole of the insertion region 203 and the inner hole of the holding region 205 are designed asymmetrically, and the inner hole of the insertion region 203 is larger, so that when a circuit board is inserted, the hole wall of the inner hole of the insertion region 203 is more easily deformed, and the insertion region 203 is more easily inserted into the circuit board; when the fisheye terminal is pulled out from the circuit board, the inner hole of the holding area 205 is small, so that the inner hole wall of the holding area 205 is not easy to deform, and therefore a larger force is needed when the fisheye terminal is pulled out, the insertion force of the fisheye terminal is ensured to be small as much as possible, meanwhile, the holding force of the fisheye terminal can be increased, and the performance of the fisheye terminal is improved.

In this embodiment, the fisheye terminal body further comprises a transition region 204, the transition region 204 is located between the insertion region 203 and the holding region 205 and connected with the insertion region 203 and the holding region 205, and the transition region 204 is used for connecting the insertion region 203 and the holding region 205 to make the insertion smooth.

And, the transition area 204 is also provided with a through hole, the through hole is communicated with the inner hole, the width of the wall of the through hole in the transition area 204 is smaller than that of the wall of the inner hole in the holding area 205, so that the insertion force of the fisheye terminal is further ensured to be as small as possible, and the holding force of the fisheye terminal can be increased.

It should be noted that the through hole connects with the inner holes of the insertion region 203 and the holding region 205 to form a complete fisheye 209, and the inner edges 210 of the fisheyes (i.e., the inner edges of the through hole and the inner holes of the insertion region 203 and the holding region 205) smoothly transition.

Further, the junction of the transition region 204 and the holding region 205 is in smooth transition, and the junction of the insertion region 203 and the transition region 204 is in smooth transition, so that the circuit board can be conveniently inserted into or pulled out of the circuit board, and the circuit board is not easily damaged.

In this embodiment, the guiding portion includes a pre-plugging area 202 and a guiding needle point 201, one end of the pre-plugging area 202 is connected to the plugging area 203, the other end is connected to the guiding needle point 201, the guiding needle point 201 is located at the end of the fisheye terminal, so as to facilitate the product to be pre-placed in the board hole of the circuit board, and the guiding needle point 201 and the pre-plugging area 202 cooperate to facilitate the fisheye terminal to be guided into the board hole of the circuit board, so as to position the original product.

Wherein, the guide needle point 201 is chamfered at four sides, so as to be conveniently inserted into the circuit board hole.

In one embodiment, the outer edge of the insertion region 203 is symmetrical to the outer edge of the holding region 205, i.e. the width of the insertion region 203 is the same as the width and the shape of the outer edge of the holding region 205, in order to make the width of the inner hole wall of the holding region 205 larger than the width of the inner hole wall of the insertion region 203, so that the width of the inner hole of the insertion region 203 is larger than the width of the inner hole of the holding region 205, thereby ensuring that the insertion force of the fisheye terminal is as small as possible and increasing the holding force of the fisheye terminal.

In another embodiment, the outer edge of holding region 205 protrudes beyond the outer edge of insertion region 203, i.e. the width of holding region 205 is greater than the width of insertion region 203, wherein the width of the inner hole in holding region 205 may be greater than the width of the inner hole in insertion region 203, or the inner hole in holding region 205 may be the same as the inner hole in insertion region 203.

In some embodiments, the width of the inner hole wall in the holding area 205 is greater than the width of the inner hole wall in the insertion area 203 by 10% of the width of the inner hole wall in the insertion area 203, for example, the width of the inner hole wall in the insertion area 203 is 2mm, and the width of the inner hole wall in the holding area 205 is 2.2mm, of course, the width of the inner hole wall in the holding area 205 and the width of the inner hole wall in the insertion area 203 may be specifically set according to actual requirements, and the width of the inner hole wall in the holding area 205 is not limited to be greater than the width of the inner hole wall in the insertion area 203 by 10%.

In this embodiment, the fisheye terminal body further includes a plastic limiting structure 207 and a pin zone 208 located in the plastic sleeve, one end of the plastic limiting structure 207 is connected to the base 206, the other end is connected to the pin zone 208, and the plastic limiting structure 207 is clamped outside the plastic sleeve to prevent the fisheye terminal from being separated from the plastic sleeve.

In this embodiment, the guide needle point 201, the pre-insertion region 202, the insertion region 203, the transition region 204, the holding region 205, and the base 206 are integrally formed, that is, the fisheye terminal body is an integral structure, and the outer edges 211 of the fisheye terminal body are provided with round chamfers, so as to ensure that the board holes of the circuit board are not damaged.

It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims

1. The fisheye terminal is characterized by comprising a fisheye terminal body, wherein the fisheye terminal body comprises a base (206), a guide part, an insertion area (203) connected with the guide part, a holding area (205) connected with the base (206) and inner holes arranged in the insertion area (203) and the holding area (205), and the width of the wall of the inner hole in the insertion area (203) is smaller than that of the wall of the inner hole in the holding area (205).

2. The fisheye terminal of claim 1, characterized in that the fisheye terminal body further comprises a transition region (204), two ends of the transition region (204) are respectively connected with the insertion region (203) and the holding region (205), the transition region (204) is provided with a through hole communicated with the inner hole, and the width of the wall of the through hole in the transition region (204) is smaller than the width of the wall of the inner hole in the holding region (205).

3. The fisheye terminal of claim 1 characterised in that the width of the internal bore at the insertion region (203) is greater than the width of the internal bore at the retention region (205).

4. Fisheye terminal according to claim 1, characterised in that the outer edge of the insertion region (203) is symmetrical to the outer edge of the holding region (205).

5. The fisheye terminal of claim 1 characterised in that the outer edge of the holding region (205) is raised above the outer edge of the insertion region (203).

6. The fisheye terminal of claim 1 characterised in that the guide comprises a pre-insertion region (202) symmetrical to the base (206) and a guide needle point (201), the pre-insertion region (202) being connected at one end to the insertion region (203) and at the other end to the guide needle point (201).

7. Fisheye terminal according to claim 2, characterised in that the transition (204) and the holding region (205) are smoothly connected, and the transition (204) and the insertion region (203) are smoothly connected.

8. The fisheye terminal of claim 1 wherein the outer edges (211) of the fisheye terminal body are each provided with a rounded corner.

9. The fisheye terminal of claim 1 wherein the width of the inner bore wall at the retention region (205) is greater than the width of the inner bore wall at the insertion region (203) by 10% of the width of the inner bore wall at the insertion region (203).

10. The fisheye terminal of claim 1, wherein the fisheye terminal body further comprises a plastic limiting structure (207) and a pin area (208) located in the plastic sleeve, and one end of the plastic limiting structure (207) is connected with the base (206) and the other end is connected with the pin area (208).