Connector structure with elastic probe

Abstract

The utility model relates to the field of electric connectors, in particular to a connector structure with an elastic probe, which comprises a shell, an inner conductor, an elastic piece and a probe, one end of the inner conductor is connected with the inside of the shell, and the other end of the inner conductor extends out of the shell; the probe adopts a three-section structure and is coaxially arranged with the inner conductor, the probe comprises an end head, a middle section and a tail part which are connected in sequence, and the tail part is connected with the inner conductor in the shell in a plugging manner; the middle section and the tail are arranged in the shell, one end of the end is connected with the middle section, and the other end extends out of the shell; the elastic piece is arranged between the tail part and the inner conductor, and the telescopic axis of the elastic piece is coaxial with the inner conductor. According to the utility model, the three-section type probe is arranged, only the size of the tail part of the elastic probe is arranged in the hole of the inner conductor which plays a guiding and connecting role at the tail part, the size of the end head of the elastic probe is not limited by the size of the inner conductor assembled at the tail part any more, and any size for customers can be satisfied.

Description

Technical Field

[0001] The utility model relates to the field of electric connectors, in particular to a connector structure with an elastic probe. Background Art

[0002] The requirements for connectors in the fields of aviation, aerospace, weapons, etc. are getting higher and higher. Not only must they meet the basic circuit connection functions, but users will also put forward more requirements on the size of each contact to meet the system's usage requirements.

[0003] Through the investigation of similar elastic pin design structures, the elastic pin assembly basically has the following two structures: the inner conductor wraps the elastic pin structure, and the upper end limit adopts a base or an inner conductor riveting structure, such as Figure 1 , 2 As shown. The elastic needle assembly and the shell are assembled and fixed by using a barbed structure or a two-body base limiter, which has the following problems: ① The elastic needle is completely inserted into the inner conductor hole. Due to the size limitation of the inner conductor, the diameter of the elastic needle end will be limited and cannot be too large to meet customer requirements; ② When this type of structure adopts a barbed press-fit structure, a clearance groove is opened in the base hole of the elastic needle assembly, and a barbed hook structure is added to the outer circle of the inner conductor of the elastic needle assembly. Since this assembly structure is limited by the precision requirements of machining, after assembly, the tail needs to be plugged in and out of other products. The force generated by the plugging and unplugging will cause the elastic needle assembly to move back and forth, which will affect the reliability of use; and when a two-body base is used, the height dimension requirement cannot meet the miniaturization requirement. Utility Model Content

[0004] In view of the problems in the prior art, the utility model provides a connector structure with an elastic probe, which solves the use occasions where one end has requirements on the diameter of the elastic needle contact part and the other end has requirements on the height direction and plugging and unplugging.

[0005] The utility model is realized by the following technical solutions:

[0006] A connector structure with an elastic probe comprises an outer shell, an inner conductor, an elastic member and a probe, wherein one end of the inner conductor is connected to the inside of the outer shell, and the other end extends out of the outer shell; the probe adopts a three-section structure and is coaxially arranged with the inner conductor, the probe comprises an end head, a middle section and a tail section which are connected in sequence, and the tail section is plug-in-connected with the inner conductor inside the outer shell; the middle section and the tail section are both arranged inside the outer shell, one end of the end head is connected to the middle section, and the other end extends out of the outer shell; the elastic member is arranged between the tail section and the inner conductor, and the telescopic axis of the elastic member is coaxial with the inner conductor.

[0007] Preferably, the cross-section of the probe perpendicular to its longitudinal axis is circular, and the cross-sectional area of ​​the end and the cross-sectional area of ​​the tail are both smaller than those of the middle section.

[0008] Preferably, the cross-sectional area of ​​the end portion is larger than the cross-sectional area of ​​the tail portion.

[0009] Preferably, a mounting groove is provided at one end of the inner conductor close to the tail of the probe, the elastic member is located in the mounting groove, and the tail extends into the mounting groove to be connected with the elastic member.

[0010] Preferably, the cross-sectional area of ​​the mounting groove is smaller than the cross-sectional area of ​​the middle section.

[0011] Preferably, a mounting hole is provided on the shell, one end of the terminal penetrates the mounting hole and is connected to the middle section, and the cross-sectional area of ​​the mounting hole is smaller than the cross-sectional area of ​​the middle section.

[0012] Preferably, a connecting groove is provided inside the shell, one end of the inner conductor is located in the connecting groove, and the cross-sectional area of ​​the connecting groove is larger than the cross-sectional area of ​​the middle section.

[0013] Preferably, an annular groove is provided on the outer side of one end of the inner conductor located inside the shell, and a packaging hole is opened on the side wall of the connecting groove. When the inner conductor is connected to the shell, the annular groove and the packaging hole overlap to form a fixed groove, and a packaging block is arranged in the fixed groove.

[0014] Preferably, the packaging block is formed by curing the curing glue.

[0015] Preferably, the housing is made of elastic material.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model provides an elastic probe structure in which a three-section probe is arranged. Only the tail of the elastic needle is inserted into the hole of the inner conductor which plays a guiding and connecting role at the tail. The size of the end of the elastic needle is no longer limited by the size of the inner conductor assembled at the tail, and any size used by customers can be achieved.

[0018] Furthermore, the middle section can prevent the probe from flying out of the housing under the action of the elastic member; the middle section is in contact with the top surface of the inner conductor to limit the pressing length of the probe, which helps to increase the safety of the probe.

[0019] Furthermore, the annular groove at the tail is filled with curing glue through the packaging hole on the shell during assembly. After the curing glue is cured, the fixation of the inner conductor is strengthened. During the plugging and unplugging process by the customer, there will be no forward and backward movement, which will affect the reliability of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A probe for the base limiting structure;

[0021] Figure 2 A probe for the riveting and limiting structure of the parts;

[0022] Figure 3 This is a schematic diagram of the overall structure of an elastic probe of the utility model;

[0023] Figure 4 It is a schematic diagram of the structure of the probe of the utility model;

[0024] Figure 5 It is a schematic diagram of the structure of the inner conductor of the utility model;

[0025] Figure 6 It is a structural schematic diagram of the shell of the utility model.

[0026] In the figure, 1, outer shell; 2, inner conductor; 3, elastic part; 4, probe; 4-1, end; 4-2, middle section; 4-3, tail; 5, mounting hole; 6, limit table; 7, annular groove; 8, packaging hole; 9, middle groove; 10, packaging block; 11, connecting groove; 12, mounting groove. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below in conjunction with specific embodiments, which are intended to explain the present invention rather than to limit it.

[0028] The utility model discloses an elastic probe structure, referring to Figure 3 , including a housing 1, an inner conductor 2, an elastic member 3 and a probe 4, wherein the probe 4 adopts a three-section structure and is coaxially arranged with the inner conductor 2, referring to Figure 4 The probe 4 includes an end 4-1, a middle section 4-2 and a tail 4-3 connected in sequence. In this embodiment, the cross-section of the probe 4 perpendicular to its length axis is circular, the cross-sectional area of ​​the end 4-1 and the cross-sectional area of ​​the tail 4-3 are both smaller than the middle section 4-2, and the cross-sectional area of ​​the end 4-1 is larger than the cross-sectional area of ​​the tail 4-3.

[0029] Reference Figure 3 , 6 The tail portion 4-3 is plug-in connected to the inner conductor 2 inside the shell 1; the middle section 4-2 and the tail portion 4-3 are both arranged inside the shell 1, one end of the terminal 4-1 is connected to the middle section 4-2, and the other end extends out of the shell 1; a mounting hole 5 is opened on the shell 1, one end of the terminal 4-1 passes through the mounting hole 5 and is connected to the middle section 4-2, and the cross-sectional area of ​​the mounting hole 5 is smaller than the cross-sectional area of ​​the middle section 4-2.

[0030] Reference Figure 3 , 5, the elastic member 3 is arranged between the tail 4-3 and the inner conductor 2, and the telescopic axis of the elastic member 3 is coaxial with the inner conductor 2. In this embodiment, a mounting groove 12 is provided at one end of the inner conductor 2 close to the tail 4-3 of the probe 4, the elastic member 3 is located in the mounting groove 12, and the tail 4-3 extends into the mounting groove 12 and is connected to the elastic member 3. Among them, the cross-sectional area of ​​the mounting groove 12 is smaller than the cross-sectional area of ​​the middle section 4-2, and the pressing depth of the probe 4 can be limited, which helps to improve safety.

[0031] Reference Figure 3 , 6 An intermediate groove 9 is provided inside the shell 1, and the intermediate section 4-2 is slidably arranged in the intermediate groove 9. One end of the intermediate groove 9 is connected with the mounting hole 5, and the other end is connected with the connecting groove 11. The cross-sectional area of ​​the intermediate groove 9 is smaller than the cross-sectional area of ​​the connecting groove 11; and the cross-sectional area of ​​the intermediate groove 9 is larger than the cross-sectional area of ​​the mounting hole 5. At this time, a limit platform 6 is formed at the shell 1 where the mounting hole 5 is formed, which can prevent the probe 4 from flying out of the shell 1 under the action of the elastic member 3.

[0032] Reference Figure 3 , 5 , 6, one end of the inner conductor 2 is connected to the inside of the shell 1, and the other end extends out of the shell 1; a connecting groove 11 is provided inside the shell 1, and one end of the inner conductor 2 is located in the connecting groove 11, and the cross-sectional area of ​​the connecting groove 11 is larger than the cross-sectional area of ​​the middle section 4-2. In this embodiment, the shell 1 is made of elastic material (such as rubber or silicone, etc.), and an annular groove 7 is provided on the outer side of one end of the inner conductor 2 located inside the shell 1, and a packaging hole 8 is opened on the side wall of the connecting groove 11. When the inner conductor 2 is connected to the shell 1, the annular groove 7 and the packaging hole 8 overlap to form a fixed groove, and a packaging block 10 is provided in the fixed groove.

[0033] The encapsulation block 10 is formed by curing the curing glue, and in this embodiment, the curing glue is epoxy resin glue. After the assembly is completed, the curing glue is poured from the encapsulation hole 8 to fill the fixing groove. After the curing glue is cured, the fixation of the inner conductor 2 is strengthened, and during the plugging and unplugging process of the customer, there will be no forward and backward movement, which affects the reliability of use.

[0034] The assembly principle of an elastic probe structure of the utility model is as follows: the probe 4 is pushed into the shell 1 from the mounting groove 12 of the shell 1 with the end 4-1 first, until the middle section 4-2 contacts the limit platform 6; then the inner conductor 2 equipped with the elastic member 3 is pushed into the shell 1, until the tail 4-3 of the probe 4 abuts against the elastic member 3 in the inner conductor 2 or the annular groove 7 outside the inner conductor 2 completely overlaps with the packaging hole 8; then, curing glue is poured from the packaging hole 8 to fill the fixing groove formed by the annular groove 7 and the packaging hole 8; finally, it is left to stand until the curing glue is completely cured, and the finished product can be obtained.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to impose any limitation on the technical solution of the present invention. Those skilled in the art should understand that, without departing from the spirit and principles of the present invention, the technical solution can also be subjected to several simple modifications and replacements, and these modifications and replacements are also within the scope of protection covered by the claims.

Claims

1. A connector structure with an elastic probe, characterized in that: The invention comprises an outer shell (1), an inner conductor (2), an elastic member (3) and a probe (4); one end of the inner conductor (2) is connected to the inside of the outer shell (1), and the other end thereof protrudes out of the outer shell (1); the probe (4) adopts a three-section structure and is coaxially arranged with the inner conductor (2); the probe (4) comprises an end (4-1), a middle section (4-2) and a tail (4-3) which are connected in sequence; the tail (4-3) is pluggably connected to the inner conductor (2) inside the outer shell (1); the middle section (4-2) and the tail (4-3) are both arranged inside the outer shell (1); one end of the end (4-1) is connected to the middle section (4-2), and the other end thereof protrudes out of the outer shell (1); the elastic member (3) is arranged between the tail (4-3) and the inner conductor (2), and the telescopic axis of the elastic member (3) is coaxial with the inner conductor (2).

2. The connector structure with elastic probe according to claim 1, characterized in that: The cross-sections of the probe (4) perpendicular to its longitudinal axis are both circular, and the cross-sectional areas of the end (4-1) and the tail (4-3) are both smaller than those of the middle section (4-2).

3. The connector structure with elastic probe according to claim 2, characterized in that: The cross-sectional area of ​​the end portion (4-1) is greater than the cross-sectional area of ​​the tail portion (4-3).

4. The connector structure with elastic probe according to claim 1, characterized in that: An installation groove (12) is provided at one end of the inner conductor (2) close to the tail portion (4-3) of the probe (4), the elastic member (3) is located in the installation groove (12), and the tail portion (4-3) extends into the installation groove (12) to be connected to the elastic member (3).

5. The connector structure with elastic probe according to claim 4, characterized in that: The cross-sectional area of ​​the installation groove (12) is smaller than the cross-sectional area of ​​the middle section (4-2).

6. The connector structure with elastic probe according to claim 1, characterized in that: The housing (1) is provided with a mounting hole (5), one end of the terminal (4-1) passes through the mounting hole (5) and is connected to the middle section (4-2), and the cross-sectional area of ​​the mounting hole (5) is smaller than the cross-sectional area of ​​the middle section (4-2).

7. The connector structure with elastic probe according to claim 2, characterized in that: A connecting groove (11) is provided inside the housing (1), one end of the inner conductor (2) is located in the connecting groove (11), and the cross-sectional area of ​​the connecting groove (11) is greater than the cross-sectional area of ​​the middle section (4-2).

8. The connector structure with elastic probe according to claim 7, characterized in that: An annular groove (7) is provided on the outer side of one end of the inner conductor (2) located inside the outer shell (1), and a packaging hole (8) is provided on the side wall of the connecting groove (11). When the inner conductor (2) is connected to the outer shell (1), the annular groove (7) and the packaging hole (8) overlap to form a fixed groove, and a packaging block (10) is provided in the fixed groove.

9. The connector structure with elastic probe according to claim 8, characterized in that: The packaging block (10) is formed by curing the curing glue.

10. The connector structure with elastic probe according to claim 1, characterized in that: The housing (1) is made of elastic material.

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