CN219676101U - Elastic flat probe for high-current test and connector comprising same - Google Patents

Abstract

The utility model discloses an elastic flat probe for high-current test and a connector comprising the same, belonging to the technical field of signal transmission and test. The elastic flat probe for high-current test has a simple structure, is easy to process, can accurately complete the conduction test requirement of electronic equipment, meets the high-speed signal transmission and high-current test requirements of electronic components, and ensures the accuracy and efficiency of the conduction test; moreover, the elastic flat probe is integrally formed, and the service life is not influenced by internal friction in the test compression process, so that the service life of the elastic flat probe can reach more than 3-5 times of that of a conventional probe, and the elastic flat probe has good economic benefit and practical value.

Description

Elastic flat probe for high-current test and connector comprising same

Technical Field

The utility model belongs to the technical field of signal transmission and testing, and particularly relates to an elastic flat probe for high-current testing and a connector comprising the same.

Background

In the manufacturing process of electronic component modules such as liquid crystal panels and integrated circuits, it is often necessary to perform processes such as conduction detection and operation characteristic inspection, and it is often necessary to connect a main substrate of the electronic component module to an FPC contact electrode using a probe, or to connect an electrode portion of the substrate to a detection device, thereby completing the corresponding detection operation.

In general, a test probe has a pair of contacts that can be brought into contact with electrode terminals of an electronic component and electrode terminals of a connected electronic component, respectively, and an elastic portion that connects between the pair of contacts, and the contact pressure between the contacts and the electrode terminals of the electronic component and the electrode terminals of the connected electronic component is ensured by the elastic portion, thereby improving the contact reliability between the electrode terminals of the electronic component and the electrode terminals of the connected electronic component.

With the continuous development of the electronic industry, electronic products are more and more, the requirements for conducting tests of electronic components are more and more, and higher requirements for the speed and quality of signal transmission are also put forward, so that the conventional probes cannot meet the requirements of practical application. Generally, the thicker the sectional area of the probe is, the smaller the conductive resistance is, the faster the signal transmission speed is, and the larger the overcurrent capacity of the probe is; accordingly, the shorter the transmission path of the probe, the higher the signal transmission quality. As such, in the prior art, various designs have been made for the structural form of the probe for test in order to obtain a probe with better comprehensive performance; however, the comprehensive performance of most probes still cannot fully meet the requirements of practical applications, and the service life of the probes is often short, so that certain use limitations exist.

Disclosure of Invention

Aiming at one or more of the defects or improvement demands of the prior art, the utility model provides the elastic flat probe for the high-current test and the connector comprising the same, which can ensure that the two ends of the probe are respectively abutted against corresponding parts and accurately complete the conduction test process, realize the high-current test of the probe, prolong the service life of the probe and ensure the precision and the efficiency of the probe test.

In order to achieve the above object, according to one aspect of the present utility model, there is provided an elastic flat probe for high current test, comprising a first contact portion and a second contact portion which are disposed at intervals in a length direction of the probe, and a first elastic portion and a second elastic portion which are disposed between the two contact portions and connected by end portions;

the first contact part is of an L-shaped structure and comprises a first contact unit which is extended and arranged in a first direction by taking the length direction of the probe and a limit support part which is extended and arranged in a second direction by taking the width direction of the probe;

the first elastic part comprises a first strip-shaped elastic piece and a second strip-shaped elastic piece which are arranged at intervals; the two strip-shaped elastic sheets comprise a first linear part, an oblique line part, a second linear part and a third linear part which are sequentially arranged;

the first straight line part extends along a first direction, one end of the first straight line part is connected with the limiting support part, and the other end of the first straight line part is connected with one end of the oblique line part which is arranged at a certain acute angle with the second direction; the other end of the oblique line part is connected with one end of the second straight line part extending along the second direction, and the other end of the second straight line part is connected with the end part of the third straight line part through a bending part;

the second elastic part comprises a third strip-shaped elastic piece and a fourth strip-shaped elastic piece which are arranged at intervals, the third strip-shaped elastic piece and the fourth strip-shaped elastic piece are bent and extend in the first direction, two ends of the first strip-shaped elastic piece are respectively connected with the end part of the first strip-shaped elastic piece and the second contact part, and two ends of the second strip-shaped elastic piece are respectively connected with the end part of the second strip-shaped elastic piece and the second contact part.

As a further improvement of the present utility model, both sides of the two elastic portions along the second direction do not protrude from both sides of the at least one contact portion along the second direction, respectively; and is also provided with

The first linear part of the first strip-shaped elastic piece is connected to the middle of the limiting support part, and the first linear part of the second strip-shaped elastic piece is connected to one end of the limiting support part, which is away from the first contact unit.

As a further improvement of the present utility model, two oblique line portions are arranged in parallel;

and/or

The included angle between the oblique line part and the second direction is 15-30 degrees.

As a further improvement of the present utility model, the diagonal line portion and the second straight line portion are connected by a curved portion;

or alternatively

The oblique line part is connected with the second straight line part straight line through a straight line part extending along the first direction;

or alternatively

The oblique line part is connected with the second straight line part through a second oblique line part, and an included angle formed between the second oblique line part and the second straight line part is 80-90 degrees.

As a further improvement of the utility model, the distance between the circle centers of the bending parts, which are respectively connected with the second linear part and the third linear part, and the side, which is away from the limit support part, of the first contact unit in the second direction is 2/5-1/2 of the width dimension of the probe.

As a further improvement of the present utility model, the third band-shaped elastic piece and the fourth band-shaped elastic piece each include a fourth straight line portion and a fifth straight line portion that are disposed at intervals in the first direction and extend in the second direction, respectively;

one end of the fourth straight line part is connected with the end part of the third straight line part through a bending part, the other end of the fourth straight line part is connected with one end of the fifth straight line part through a bending part, and the other end of the fifth straight line part is connected with the second contact part.

As a further improvement of the utility model, the distance between the center of the bending part arranged between the third linear part and the fourth linear part and one side of the first contact unit, which is away from the limit support part, in the second direction is 1/5-1/4 of the width dimension of the probe;

and/or

The distance between the center of the bending part arranged between the fourth linear part and the fifth linear part and one side of the limiting branch part, which is away from the first contact unit, in the second direction is 1/5-1/4 of the width dimension of the probe.

As a further improvement of the present utility model, the second contact portion includes a second contact unit extending in the second direction and a joining branch portion provided at an end of the second contact unit near the first contact unit and extending in the first direction;

one ends of the third and fourth strip-shaped elastic pieces, which deviate from the first elastic part, are connected to one side of the connecting support part.

As a further improvement of the utility model, the width of a gap formed by two strip-shaped elastic sheets arranged at intervals is not smaller than the width of any strip-shaped elastic sheet at two sides of the gap;

and/or

The conducting sectional areas of the two elastic parts are equal, and the conducting sectional areas of the two elastic parts are not larger than the conducting sectional areas of other parts of the probe.

In another aspect of the utility model, a connector is provided that includes a core assembly having at least one of the high current test resilient flat probes disposed therein.

The above-mentioned improved technical features can be combined with each other as long as they do not collide with each other.

In general, the above technical solutions conceived by the present utility model have the beneficial effects compared with the prior art including:

(1) The elastic flat probe for high-current test comprises two contact parts and two elastic parts which are arranged between the two contact parts and are sequentially communicated, and the arrangement of the elastic flat probe can be accurately realized by utilizing the corresponding design of the structural form of the strip-shaped elastic sheet in the two elastic parts, so that the convenience in manufacturing the probe and the reliability in using the probe are ensured, the application under the high-speed signal transmission and high-current test environments is satisfied, and the efficiency and the precision of the conduction test are improved.

(2) According to the elastic flat probe for high-current test, through the corresponding arrangement of the first straight line part, the oblique line part, the second/third straight line part and the bending part in the first elastic part, the accurate work of the first elastic part can be effectively ensured, and the reliability and the stability of the compression work of the first elastic part are ensured; meanwhile, through the corresponding arrangement of arc transition or tangent connection of the bending parts among the parts, abrupt changes of force transmission directions at all connection positions on the strip-shaped elastic sheet are further avoided, stress concentration on the strip-shaped elastic sheet is effectively reduced, the reliability of the probe is improved, and the service life of the elastic part and even the probe is prolonged.

(3) According to the elastic flat probe for high-current test, the structure of the second elastic part is optimized, and the elastic flat probe is connected with the first elastic part, so that a continuous and stable strip-shaped elastic sheet structure is correspondingly formed, and the structural stability of the probe in the compression use process is ensured; in addition, through the widening treatment and the local reinforcing treatment of the first linear part, the local stress concentration of the connecting part of the first contact part and the first elastic part can be effectively avoided, and the reliability of probe arrangement and use is further ensured.

(4) The elastic flat probe for high-current test has a simple structure, is easy to process, can accurately complete the conduction test requirement of electronic equipment, meets the high-speed signal transmission and high-current test requirements of electronic components, and ensures the accuracy and efficiency of the conduction test; moreover, the elastic flat probe is integrally formed, and the service life is not influenced by internal friction in the test compression process, so that the service life of the elastic flat probe can reach more than 3-5 times of that of a conventional probe, and the elastic flat probe has good economic benefit and practical value.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of an elastic flat probe according to an embodiment of the present utility model;

FIG. 2 is a schematic plan view of an elastic flat probe according to an embodiment of the present utility model;

FIG. 3 is a schematic view showing the arrangement of two elastic parts of an elastic flat probe according to an embodiment of the present utility model;

FIGS. 4 and 5 are schematic views of the width marks of the respective parts of the elastic flat probe according to the embodiment of the present utility model;

FIG. 6 is a schematic diagram showing the switching of the elastic flat probe between the initial state and the working state according to the embodiment of the present utility model;

FIG. 7 is a schematic view of an embodiment of the utility model with the spring flat probe in use disposed in a connector;

like reference numerals denote like technical features throughout the drawings, in particular:

100. an elastic flat probe; 200. a mold core assembly;

1. a first contact portion; 2. a first elastic portion; 3. a second elastic part; 4. a second contact portion; 5. a rubber frame; 6. a cover plate;

101. a first contact unit; 102. a limit support part; 103. a first contact portion; 104. a hollowed hole;

201. a first band-shaped elastic sheet; 202. a second band-shaped elastic sheet; 203. a first gap; 2011. a first straight line portion; 2012. a diagonal line portion; 2013. a first bending portion; 2014. a second straight line portion; 2015. a second bending portion; 2016. a third straight line portion;

301. a third band-shaped elastic sheet; 302. a fourth band-shaped elastic sheet; 303. a second gap; 3011. a third bending part; 3012. a fourth straight line portion; 3013. a fourth bending portion; 3014. a fifth straight line portion;

401. a second contact unit; 402. a second contact portion; 403. and a connecting support part.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. In addition, the technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Examples:

referring to fig. 1 to 6, an elastic flat probe for high current testing in a preferred embodiment of the present utility model is made of a conductive material, and includes a first contact portion 1, a first elastic portion 2, a second elastic portion 3, and a second contact portion 4 sequentially disposed in a working direction of the probe (i.e., a length direction of the probe, which is referred to as a first direction, i.e., a vertical direction shown in fig. 2), and each of the components is sequentially connected and integrally formed to form a thin plate-shaped elastic flat probe 100.

Specifically, the first contact portion 1 in the preferred embodiment, as shown in fig. 2, includes a first contact unit 101 disposed to extend in a first direction, and an end of the first contact unit 101 facing away from the first elastic portion 2 is provided with a first contact portion 103 for contacting a corresponding member and transmitting a force in the first direction to the first elastic portion 2.

In actual arrangement, the first contact portion 103 may be configured in a multi-contact form, such as V-shape, wave-shape, zigzag shape, etc., as shown in fig. 2, but may also be configured in a round-head shape, square-head shape, or other forms, which will not be described herein.

Preferably, at least one hollowed hole 104 is formed in the middle of the first contact unit 101, penetrates through two end surfaces of the first contact unit 101 in the thickness direction, and further preferably extends along the first direction. By the aid of the hollow holes 104, the weight of the probe can be reduced, metal raw materials are saved, and the cost of the probe is reduced.

Further, a stopper branch 102, which is a sheet-like/long plate-like shape extending in the second direction, is provided extending in the second direction (perpendicular to the first direction, i.e., the width direction of the probe) at a side of the first contact unit 101 in the width direction facing away from one end of the first contact unit 103, and can be regarded as extending in the second direction from the side of the end of the first contact unit 101, so that the first contact unit 1 forms an "L-shaped" structure as shown in fig. 2.

By means of the arrangement of the limiting support portions 102, when the elastic flat probe 100 is correspondingly embedded in the mold core assembly 200, the limiting support portions 102 can serve as upper limiting portions abutting against the inner peripheral wall surface of the mold core assembly 200 and the accuracy and reliability of the arrangement and use of the elastic flat probe 100 are guaranteed.

As shown in fig. 2 and 3, the first elastic part 2 and the second elastic part 3 in the preferred embodiment are connected by end, the former is connected by end to the first contact part 1, the latter is connected by end to the second contact part 4, and an elastic structure extending continuously and crookedly is formed between the two contact parts.

Specifically, the first elastic portion 2 and the second elastic portion 3 include two band-shaped elastic pieces, i.e., a first band-shaped elastic piece 201, a second band-shaped elastic piece 202, and a third band-shaped elastic piece 301 and a fourth band-shaped elastic piece 302, respectively. The first strip-shaped elastic piece 201 is connected with the third strip-shaped elastic piece 301 by an end, and the second strip-shaped elastic piece 202 is connected with the fourth strip-shaped elastic piece 302 by an end, so that two strip-shaped elastic pieces which respectively extend continuously can be formed between the two contact parts, as shown in fig. 2.

In more detail, the first band spring 201 in the preferred embodiment includes a first straight line portion 2011, a diagonal line portion 2012, a first curved portion 2013, a second straight line portion 2014, a second curved portion 2015, and a third straight line portion 2016, which are sequentially connected.

The first straight line portion 2011 extends along the first direction, and one end of the first straight line portion is connected to a middle portion of a side of the limiting support portion 102 facing away from the first contact portion 103. The reason why the first straight portion 2011 is connected to the middle portion of the stopper leg 102 is that, in the actual arrangement, the first curved portion 2013 preferably does not protrude from the side of the first contact unit 101 facing away from the stopper leg 102 in the second direction. As described above, since the diagonal line portion 2012 is required to be provided between the first curved portion 2013 and the first straight line portion 2011, a certain distance needs to be reserved between the first curved portion 2013 and the first straight line portion 2011, and the first straight line portion 2011 is connected to the middle portion of the stopper leg portion 102.

Further, the oblique line portion 2012 has a straight line structure extending obliquely, and an included angle between the oblique line portion 2012 and the second direction is preferably 15 ° to 30 °.

Meanwhile, the second straight portion 2014 in the preferred embodiment preferably extends in the second direction, and one end thereof is connected to an end of the diagonal portion 2012 by the first curved portion 2013. In actual arrangement, the connection between the diagonal line portion 2012 and the second straight line portion 2014 may be achieved by a curved portion (i.e., the first curved portion 2013), or may be achieved by a straight line portion extending in the first direction or a second diagonal line portion extending diagonally.

When the connection between the two is realized by the straight line part or the second oblique line part, the two ends of the straight line part or the second oblique line part are preferably in arc transition with the end part of the oblique line part 2012 or the second straight line part 2014, so that abrupt change of the force transmission direction of the strip-shaped elastic sheet is avoided, and local stress concentration in the compression use process of the strip-shaped elastic sheet is reduced. More preferably, when the connection between the two is implemented by the second oblique line portion, an included angle formed between the second oblique line portion and the second straight line portion 2014 is preferably in a range of 80 ° to 90 °.

More specifically, the third straight portions 2016 extend in the second direction, which are disposed at intervals from the second straight portions 2014 in the first direction, and are connected at their ends to both ends of the second curved portion 2015, respectively, as shown in fig. 3. In actual arrangement, the second bending portion 2015 and the end of the limiting support portion 102 facing away from the first contact unit 101 are arranged at intervals in the first direction, and the center O thereof ₁ The distance from the side of the first contact unit 101 away from the limit support 102 is 2/5 to 1/2 of the width of the probe. In a preferred embodiment, the probe width dimension is equal to the dimension of the first contact portion 1 and/or the second contact portion 4 in the second direction.

Further, in the preferred embodiment, the second band spring 202 of the first elastic portion 2 is similar to the first band spring 201, and includes a first straight line portion 2011, a diagonal line portion 2012, a first curved portion 2013, a second straight line portion 2014, a second curved portion 2015, and a third straight line portion 2016 that are sequentially connected.

Specifically, the first straight line 2011 of the second strip-shaped elastic sheet 202 extends along the first direction and is correspondingly connected to the end of the limiting support 102 facing away from the first contact unit 101, which is specifically connected to the side of the limiting support 102 facing the first elastic portion 2, which preferably does not protrude from the end of the limiting support 102, and is further preferably disposed flush with the end of the limiting support 102, as shown in fig. 2

Accordingly, the second strip-shaped elastic sheet 202 is preferably parallel to the first straight line portions 2011, the oblique line portions 2012, the second straight line portions 2014 and the third straight line portions 2016 of the first strip-shaped elastic sheet 201, and a gap having approximately the same width (except for the corresponding region between the first straight line portions 2011) is formed between the two strip-shaped elastic sheets, i.e., the first gap 203. In actual arrangement, the width of the first gap 203 is preferably not smaller than the width of either of the two band-shaped elastic pieces forming it.

Preferably, in order to ensure the reliability of the force transmission between the first contact portion 1 and the first elastic portion 2, the first straight line portion 2011 of the first strip-shaped elastic piece 201 is preferably widened, and the width of the widened first straight line portion 2011 is preferably 2 to 4 times the width of the other portion of the first strip-shaped elastic piece 201, as shown in fig. 2. Meanwhile, reinforcement is performed at the connection portion between the first straight line portion 2011 and the limit leg portion 102, for example, a wedge portion is disposed on a side of the first straight line portion 2011 near the first contact unit 101, and a wedge surface thereof extends from a middle portion of the side of the first straight line portion 2011 to a side of the first contact unit 101 away from the limit leg portion 102.

Furthermore, in order to reduce the concentration of local stresses, the connection between the components of the first contact 1 is preferably made in the form of a circular arc transition or in the form of a tangential connection.

In practice, the first elastic portion 2 in the preferred embodiment is connected at its ends to the second elastic portion 3 extending in a curved manner, and in this case, the second elastic portion 3 includes two band-like elastic pieces extending in a curved manner in the first direction. In a preferred embodiment, the second elastic portion 3 includes two band-shaped elastic pieces, namely, a third band-shaped elastic piece 301 and a fourth band-shaped elastic piece 302, as shown in fig. 3.

It will be appreciated that the third band spring 301 and the fourth band spring 302 are arranged in the same manner in the preferred embodiment, and thus the specific structure of the third band spring 301 will be described as an example.

Specifically, the third band-shaped elastic piece 301 in the preferred embodiment includes a third curved portion 3011, a fourth straight portion 3012, a fourth curved portion 3013, and a fifth straight portion 3014.

The third curved portion 3011 connects the end of the third straight portion 2016 and the end of the fourth straight portion 3012 at the end, and the connection between the third curved portion 3011 and each straight portion is preferably made tangentially. Meanwhile, the fourth and fifth straight portions 3012 and 3014 in the preferred embodiment preferably extend in the second direction, respectively, and are disposed at intervals in the first direction. Accordingly, the fourth straight portion 3012 and the fifth straight portion 3014 are connected tangentially by the fourth curved portion 3013, and an "S-shaped" extending structure is integrally formed. Of course, the arrangement of the fourth band spring 302 is the same, and will not be described herein.

In addition, a second gap 303 formed between the third band-shaped elastic piece 301 and the fourth band-shaped elastic piece 302 communicates with the first gap 203, forming a continuously extending gap structure.

Preferably, the width of each portion of the second gap 303 is preferably the same, and the width of the second gap 303 is not smaller than the width of each band-shaped elastic piece at both sides thereof. Meanwhile, the width of the second gap 303 is further preferably the same as the main body width of the first gap 203 (the gap width of the region corresponding to the diagonal line portion 2012 and the third straight line portion 2016), and is W5 shown in fig. 4.

Further preferably, the center O of the third curved portion 3011 ₂ The distance W9 from the side of the first contact unit 101 facing away from the limit leg 102 in the second direction is preferably 1/5 to 1/4 of the probe width. Similarly, the center O of the fourth curved portion 3013 ₃ The distance W10 from the other side edge of the probe in the second direction is preferably 1/5 to 1/4 of the width of the probe. In actual setting, the outer side of the bending portion of the fourth band-shaped elastic piece 302 corresponding to the position of the fourth bending portion 3013 is preferably equal toThe end of the limiting support 102 is flush in the first direction, and at this time, the above-mentioned W10 can also be regarded as the center O ₃ The distance from the outside of the bend is shown in fig. 5.

Further, the end of the second elastic portion 3 is connected to the second contact portion 4. In a preferred embodiment, the second contact portion 4, as shown in fig. 2, includes a second contact unit 401 extending in the second direction, and is provided with a joining branch portion 403 extending in the first direction at one end thereof adjacent to the first contact unit 101, such that two straight lines of the ends of the third band-shaped elastic piece 301 and the fourth band-shaped elastic piece 302 are respectively connected to one side of the joining branch portion 403 in the second direction.

In actual arrangement, the side of the engagement leg 403 facing away from the fifth straight portion 3014 is preferably flush with the end of the second contact unit 401, and further preferably flush with the side of the first contact unit 101 facing away from the limit leg 102 in the first direction. It is further preferred that the width of the first contact portion 1 and the second contact portion 4 in the second direction is equal, i.e. the end of the limit limb 102 is flush with the side of the second contact unit 401 facing away from the engagement limb 403 in the first direction.

Furthermore, at least one second contact part 402, for example two as shown in fig. 2, is provided on the side of the second contact unit 401 facing away from the engagement leg 403.

It will be appreciated that the second contact portion 4 may be provided in other forms than the aforementioned "L-shaped" configuration.

For example, the second contact unit 401 extends in the first direction, an end of the second elastic portion 3 is connected to a second direction side of the second contact unit 401, and the second contact portion 402 is provided at an end of the second contact unit 401 facing away from the first contact portion 1. For another example, the second contact portion 4 may be configured in a "f-shaped structure", which corresponds to the inverted configuration of the second contact portion 4 in fig. 2, in which case, the end portion of the second elastic portion 3 is connected to the end of the branch portion extending in the second direction, and the second contact portion 402 is disposed at the end of the branch portion extending in the first direction.

Further, in actual setting, the widths of the two band-shaped elastic pieces in each elastic portion are preferably the same, and the widths of the band-shaped elastic pieces butted with the same, that is, W3 in fig. 4 is equal to W4, so that each band-shaped elastic piece has (approximately) the same cross-sectional area.

It can be understood that, for the two elastic portions, the sum of the cross-sectional areas of the strip-shaped elastic pieces is the conducting cross-sectional area of the corresponding elastic portion.

In a preferred embodiment, the conducting cross-section of the two elastic parts is the smallest value in the conducting cross-section of each part of the probe, that is, the sum of W3 and W4 is smaller than W1, W2, W6 and W7 respectively. Therefore, when the probe is actually designed, the conduction sectional area of the two elastic parts is set to be as large as possible, so that the conduction resistance of the probe can be effectively reduced, and the large-current signal transmission of the probe is realized.

As another preferred aspect of the present utility model, there is also included a connector as shown in fig. 7, comprising a core assembly 200 and a plurality of resilient flat probes 100 disposed within the core assembly 200. The mold core assembly 200 includes a rubber frame 5 as shown in fig. 7, which is a box-type structure with an opening at the bottom, and has a through hole at the top for the first contact portion 1 of the probe to protrude. Accordingly, the plastic frame 5 is formed with cavities accommodating the elastic flat probes 100, which are further divided into two by a partition plate, so that the elastic flat probes 100 can be symmetrically embedded in the cavities at both sides of the partition plate, as shown in fig. 7.

In actual setting, the elastic flat probe 100 embedded in the cavity is limited by the limiting support 102 abutting against the inner wall surface of the rubber frame 5, the cover plate 6 is connected to the opening side of the rubber frame 5, and two ends of the second contact unit 401, which deviate from the first contact part 1, are respectively abutted against the inner wall surface of the cover plate 6, so that the limitation of the probe in the mold core assembly 200 is realized.

When the connector works, when the first contact point 103 of the elastic flat probe 100 receives a force in a first direction, the first contact point 103 moves along the first direction to generate a certain displacement, and the force is transmitted to the first elastic part 2, so that each strip-shaped elastic piece of the first elastic part 2 is deformed, and the force required by the displacement of the first contact point 103 is dispersed by each first strip-shaped elastic piece of the first elastic part 2, so that the concentration of stress is avoided.

Simultaneously, the first elastic part 2 transmits the born acting force to the second elastic part 3, so that each strip-shaped elastic piece of the second elastic part 3 is promoted to be compressed and deformed, and the acting force from the first contact part 1 is further dispersed; correspondingly, the first contact part 103 is reliably abutted against the corresponding equipment under the action of the reaction force of the two elastic parts, and the second contact part 402 is reliably abutted against the other equipment, so that the conduction of the two equipment is realized, and the conduction test process of the corresponding equipment is completed.

For the elastic flat probe 100 in the preferred embodiment, the width of each band-like elastic piece needs to be made as large as possible (i.e., the conductive cross-sectional area of the probe is increased as much as possible), and the elastic force needs to be as small as possible when the probe is used. Although the bending arrangement of each strip-shaped elastic piece in the preferred embodiment may lead to lengthening of the conducting path, the overall resistance of the probe is reduced and the speed and overcurrent capacity of the transmitted signal are still increased because the cross-sectional area of the conductor resistance is increased more than the influence of lengthening of the path on the conductor resistance.

Further, the probes in the preferred embodiment are flat plate structures that are easier to apply to smaller pitches than conventional test probes, which can typically range from 0.05 to 0.2mm thick.

The elastic flat probe has a simple structure, is easy to process, can accurately complete the conduction test requirement of electronic equipment, meets the high-speed signal transmission and high-current test requirements of electronic components, and ensures the accuracy and efficiency of conduction test; moreover, the elastic flat probe is integrally formed, and the service life is not influenced by internal friction in the test compression process, so that the service life of the elastic flat probe can reach more than 3-5 times of that of a conventional probe, and the elastic flat probe has good economic benefit and practical value.

It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the utility model and is not intended to limit the utility model, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims (10)

1. An elastic flat probe for high-current test comprises a first contact part and a second contact part which are arranged at intervals along the length direction of the probe, and a first elastic part and a second elastic part which are arranged between the two contact parts and are connected by end parts; it is characterized in that the method comprises the steps of,

the first contact part is of an L-shaped structure and comprises a first contact unit which is extended and arranged in a first direction by taking the length direction of the probe and a limit support part which is extended and arranged in a second direction by taking the width direction of the probe;

the first elastic part comprises a first strip-shaped elastic piece and a second strip-shaped elastic piece which are arranged at intervals; the two strip-shaped elastic sheets comprise a first linear part, an oblique line part, a second linear part and a third linear part which are sequentially arranged;

the first straight line part extends along a first direction, one end of the first straight line part is connected with the limiting support part, and the other end of the first straight line part is connected with one end of the oblique line part which is arranged at a certain acute angle with the second direction; the other end of the oblique line part is connected with one end of the second straight line part extending along the second direction, and the other end of the second straight line part is connected with the end part of the third straight line part through a bending part;

the second elastic part comprises a third strip-shaped elastic piece and a fourth strip-shaped elastic piece which are arranged at intervals, the third strip-shaped elastic piece and the fourth strip-shaped elastic piece are bent and extend in the first direction, two ends of the first strip-shaped elastic piece are respectively connected with the end part of the first strip-shaped elastic piece and the second contact part, and two ends of the second strip-shaped elastic piece are respectively connected with the end part of the second strip-shaped elastic piece and the second contact part.

2. The elastic flat probe for high-current testing according to claim 1, wherein both sides of the two elastic parts in the second direction do not protrude from both sides of the at least one contact part in the second direction, respectively; and is also provided with

The first linear part of the first strip-shaped elastic piece is connected to the middle of the limiting support part, and the first linear part of the second strip-shaped elastic piece is connected to one end of the limiting support part, which is away from the first contact unit.

3. The elastic flat probe for high-current testing according to claim 2, wherein two diagonal line portions are arranged in parallel;

and/or

The included angle between the oblique line part and the second direction is 15-30 degrees.

4. The elastic flat probe for high-current testing according to any one of claims 1 to 3, wherein the diagonal line portion and the second straight line portion are connected by a bent portion;

or alternatively

The oblique line part is connected with the second straight line part straight line through a straight line part extending along the first direction;

or alternatively

The oblique line part is connected with the second straight line part through a second oblique line part, and an included angle formed between the second oblique line part and the second straight line part is 80-90 degrees.

5. The elastic flat probe for high-current testing according to any one of claims 1 to 3, wherein a distance between a center of a curved portion connecting the second straight portion and the third straight portion, respectively, and a side of the first contact unit facing away from the limit support portion in the second direction is 2/5 to 1/2 of a width dimension of the probe.

6. The elastic flat probe for high-current testing according to any one of claims 1 to 3, wherein the third band-shaped elastic piece and the fourth band-shaped elastic piece each include a fourth straight line portion and a fifth straight line portion which are disposed at intervals in the first direction and extend in the second direction, respectively;

one end of the fourth straight line part is connected with the end part of the third straight line part through a bending part, the other end of the fourth straight line part is connected with one end of the fifth straight line part through a bending part, and the other end of the fifth straight line part is connected with the second contact part.

7. The elastic flat probe for high-current testing according to claim 6, wherein the distance between the center of the bending part arranged between the third and fourth linear parts and the side of the first contact unit away from the limit support part in the second direction is 1/5-1/4 of the width of the probe;

and/or

The distance between the center of the bending part arranged between the fourth linear part and the fifth linear part and one side of the limiting branch part, which is away from the first contact unit, in the second direction is 1/5-1/4 of the width dimension of the probe.

8. The elastic flat probe for high-current testing according to any one of claims 1 to 3, 7, wherein the second contact portion includes a second contact unit extending in a second direction and a joining branch portion provided at an end of the second contact unit near the first contact unit and extending in the first direction;

one ends of the third and fourth strip-shaped elastic pieces, which deviate from the first elastic part, are connected to one side of the connecting support part.

9. The elastic flat probe for high-current testing according to any one of claims 1 to 3, 7, wherein a gap formed by two strip-shaped elastic pieces arranged at intervals has a width not smaller than a width of any one of the strip-shaped elastic pieces on both sides of the gap;

and/or

The conducting sectional areas of the two elastic parts are equal, and the conducting sectional areas of the two elastic parts are not larger than the conducting sectional areas of other parts of the probe.

10. Connector comprising a mould core assembly, characterized in that at least one elastic flat probe for high-current testing according to any one of claims 1 to 9 is provided in the mould core assembly.