TWM614567U - Pogo pin connector - Google Patents

Abstract

The present model provides a probe type connector, which includes: a base in which a cavity is provided, and the upper end of the cavity is provided with an opening; The lower end of the cylinder is slidably installed in the cavity of the base, and the upper end of the sliding sleeve protrudes upward from the opening; a conductive bead is spherical, and the conductive bead is installed on the sliding sleeve. In the receiving cavity and protruding upward from the receiving cavity; a sliding seat, the upper end of which is provided with a contact surface, the conductive bead is located above the sliding seat and is in slidable contact with the contact surface; a spring is installed on the In the cavity of the base, the upper end of the spring abuts against the sliding seat, and the lower end abuts against the base. The new type improves the contact reliability of the probe type connector.

Description

Probe connector

The model relates to the field of electrical connectors, in particular to a probe type connector with stable and reliable contact.

CN202042667U discloses a probe type connector, including a sleeve, a probe element and an elastic piece; the sleeve is provided with a containing space, the containing space has an opening; one end of the elastic piece is located in the containing space, and the other end abuts against the probe element The probe element includes a contact piece and a seat body matched with the contact piece, the contact piece is a rotatable ball, and a part of the ball protrudes out of the containing space through the opening. Since the contact piece is a sphere, it can rotate when subjected to a lateral contact force. Compared with the cylindrical contact piece in the prior art, the risk of the contact piece being stuck is reduced and the use performance of the probe type connector is improved.

In this design, the maximum elastic compression stroke of the contact is only the radius of the sphere. Because the size of the sphere in the miniature connector is extremely small, such a small stroke may lose its elasticity under the influence of the dimensional error and assembly tolerance of the component. The crimping force causes the contact to be loose.

The technical problem to be solved by the present invention is to overcome the shortcomings of the above-mentioned prior art, and propose a probe type connector with stable and reliable contact.

According to one aspect of the present invention, the present invention proposes a probe type connector, which includes: a base with a cavity inside, and an opening at the upper end of the cavity; and a sliding sleeve with an up and down extension inside it. A receiving cavity, the lower end of the sliding sleeve is slidably installed in the cavity of the base, the upper end of the sliding sleeve protrudes upward from the opening; a conductive bead, which is spherical, the conductive bead is installed It is arranged in the receiving cavity of the sliding sleeve and protrudes upward from the receiving cavity; a sliding seat, the upper end of which is provided with a contact surface, and the conductive bead is located above the sliding seat and is in slidable contact with the contact surface; A spring is installed in the cavity of the base, the upper end of the spring abuts against the sliding seat, and the lower end of the spring abuts against the base.

In some embodiments, the contact surface is an inclined surface extending obliquely with respect to the up-down direction.

In some embodiments, a recessed groove is formed at the bottom of the sliding seat; the upper end of the spring is received in the recessed groove.

In some embodiments, the base is provided with a tapered surface in an inverted cone shape at the bottom of the cavity, and the lower end of the spring abuts against the tapered surface.

In some embodiments, a flange protrudes outward from the bottom of the sliding sleeve, and the flange can abut against the upper end of the cavity, thereby preventing the sliding sleeve from coming out upward.

In some embodiments, the inner wall of the sliding sleeve projects inwardly with a blocking portion; the sliding seat is slidably installed up and down in the receiving cavity of the sliding sleeve, and the outer circumference of the sliding seat is formed with a An abutting surface, the abutting surface can abut against the blocking portion so as to prevent the sliding seat from further moving downward relative to the sliding sleeve.

In some embodiments, the sliding seat includes a supporting portion, a transition portion, and a guiding portion that are sequentially connected from top to bottom, wherein the outer diameter of the supporting portion is larger than the outer diameter of the guiding portion, and the transition The outer peripheral surface of the portion is inclined and constitutes the abutting surface.

In some embodiments, when the probe-type connector is in a non-matching state, there is a first interval between the abutting surface and the blocking portion along the up-down direction.

In some embodiments, the first interval is smaller than the radius of the conductive bead.

In some embodiments, when the probe-type connector is in the docking state, the conductive bead can move downward for a total stroke, and the sliding sleeve can move downward for a partial stroke, and the total stroke is approximately equal to the partial stroke. The stroke plus the first interval.

Compared with the prior art, the probe-type connector of the present application utilizes the rolling characteristics of the conductive beads, reduces the risk of being stuck, and improves the lateral contact performance and service life of the probe-type connector. The sliding sleeve can slide up and down in the base along with the conductive bead and the sliding seat, and its up and down sliding stroke is not limited by the size of the conductive bead, thereby increasing the compression of the spring and absorbing the probe type connector The dimensional tolerances and assembly errors of the various components of the battery can improve the positive contact force between the conductive bead and another electrical connector that is opposite to each other, thereby improving the stability and reliability of the electrical connection.

Although the present invention can be easily represented in different forms of embodiments, only some of the specific embodiments are shown in the drawings and described in detail in this specification. At the same time, it is understood that this specification should be regarded as the present specification. The exemplary description of the new principle is not intended to limit the present invention to what is described here.

Therefore, a feature pointed out in this specification will be used to illustrate one of the features of an embodiment of the present invention, instead of implying that each embodiment of the present invention must have the described feature. In addition, it should be noted that this specification describes many features. Although certain features can be combined together to illustrate possible system designs, these features can also be used in other unspecified combinations. Thus, unless otherwise stated, the illustrated combinations are not intended to be limiting.

In the embodiment shown in the drawings, the direction indications (such as up, down, left, right, front and back) are used to explain that the structure and movement of the various elements of the present invention are not absolute but relative. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, the directions of these directions also change accordingly.

The preferred embodiments of the present invention will be further described in detail below in conjunction with the drawings in this specification.

1 to FIG. 7, the probe type connector 100 of a preferred embodiment of the present invention mainly includes a base 1, a sliding sleeve 2, a sliding seat 3, a conductive bead 4 and a spring 5. The sliding sleeve 2 and the sliding seat 3 are elastically connected to the base 1 through the spring 5 so as to be elastically movable up and down relative to the base 1. The conductive bead 4 is installed in the sliding sleeve 2 and is pressed down by another opposite electrical connector (not shown in the figure) during butting, which drives the sliding sleeve 2 and the sliding seat 3 to move downwards , To form a stable contact with the base 1 to achieve a stable electrical connection with the opposite electrical connector.

With particular reference to FIGS. 3 and 7, the base 1 is provided with a cavity 11 inside, and the upper end of the base 1 is provided with an opening 12 communicating with the cavity 11. The cross-section of the cavity 11 and the opening 12 are both circular, and the diameter of the opening 12 is smaller than the cross-sectional diameter of the cavity 11. The opening 12 can be formed by the upper end edge of the base 1 being narrowed. The bottom of the cavity 11 is provided with a conical surface 13 in an inverted cone shape.

Referring to FIGS. 3 and 5 to 7, the outer shape of the sliding sleeve 2 is roughly cylindrical, and a flange 22 protrudes outward from the bottom of the sliding sleeve in the circumferential direction. The flange 22 is slidably installed in the cavity 11 of the base 1, and the outer diameter of the flange 22 is slightly smaller than the diameter of the cavity 11, so that the flange 22 can run along the inside of the cavity 11. The wall slides up and down smoothly. The outer diameter of the flange 22 is greater than the diameter of the opening 12 of the base 1, and the flange 22 can abut against the upper end of the cavity 11, thereby preventing the sliding sleeve 2 from coming out of the opening 12 upward. The upper end of the sleeve 2 protrudes upward from the opening 12.

The sliding sleeve 2 is provided with a receiving cavity 21 that penetrates up and down. As shown in FIG. 3, the diameter of the upper part of the receiving cavity 21 is larger than the diameter of the lower part. A blocking portion 23 protruding from the inside. The blocking portion 23 has a right angle in cross section.

As shown in Figures 3 and 7, the upper part of the receiving cavity 21 penetrates upwardly through the upper end surface of the sliding sleeve 2. The upper end edge of the sliding sleeve 2 is narrowed to form an upper opening 24. The diameter of the upper part of the receiving cavity 21.

As shown in FIGS. 3 and 6, the lower part of the receiving cavity 21 penetrates the lower end surface of the sliding sleeve 2 downwardly, and a lower opening 25 is formed on the lower end surface of the sliding sleeve 2.

Referring to FIGS. 6 to 7, the sliding seat 3 is generally a stepped cylindrical body, and includes a supporting portion 31, a transition portion 33 and a guiding portion 32 that are sequentially connected from top to bottom. Both the supporting portion 31 and the guiding portion 32 have cylindrical shapes, wherein the outer diameter of the supporting portion 31 is larger than the outer diameter of the guiding portion 32, and the supporting portion 31 and the guiding portion 32 are coaxially arranged. The transition portion 33 is in the shape of a truncated cone, its large end is connected to the supporting portion 31, and its small end is connected to the guiding portion 32. The outer peripheral surface of the transition portion 33 constitutes an abutting surface 331, and the abutting surface 331 is an inclined surface that is inclined up and down.

The upper end surface of the supporting portion 31 forms a contact surface 311. In this preferred embodiment, the entire contact surface 311 is an inclined surface extending obliquely with respect to the vertical direction, that is, the contact surface 311 has an acute angle A with the axis of the sliding seat 3. The bottom surface of the guide portion 32 is provided with a recessed groove 321, and the recessed groove 321 is used for receiving the spring 5.

3 and 5, the sliding seat 3 is slidably installed in the receiving cavity 21 of the sliding sleeve 2 up and down. There is a movable clearance fit between the outer surface of the supporting portion 31 and the upper inner surface of the receiving cavity 21. The contact surface 311 faces the upper opening 24 of the sliding sleeve 2. There is also a movable clearance fit between the outer surface of the guide portion 32 and the lower inner surface of the receiving cavity 21. The bottom of the guide portion 32 is exposed to the cavity 11 of the base 1 through the lower opening 25 of the sliding sleeve 2, and the recessed groove 321 communicates with the cavity 11.

In the non-butting state shown in FIG. 3, there is a first gap S1 between the abutting surface 331 and the blocking portion 23 of the sliding sleeve 2 along the up-down direction.

The conductive bead 4 is preferably made of metal material and has a spherical shape, and is installed in the receiving cavity 21 of the sliding sleeve 2 and located above the sliding seat 3. The conductive bead 4 is in slidable contact with the contact surface 311 of the sliding seat 3, and the conductive bead 4 can rotate and roll when receiving a tangential force.

The diameter of the conductive bead 4 is smaller than the diameter of the upper part of the receiving cavity 21 but larger than the diameter of the upper opening 24. A part of the conductive bead 4 protrudes upward from the receiving cavity 21 through the upper opening 24 for mating with another electrical connector (not shown in the figure).

Referring to FIGS. 3 and 5, the spring 5 is installed in the cavity 11 of the base 1, its upper end abuts against the sliding seat 3, and its lower end abuts against the bottom of the cavity 11 of the base 1. Specifically, the upper end of the spring 5 is received in the recessed groove 321 of the sliding seat 3. The recessed groove 321 provides a guide for the vertical expansion and contraction of the spring 5 to prevent it from moving improperly, and on the other hand makes the spring 5 5 can have a greater length, which is more conducive to making it have greater elasticity and absorb assembly errors. The lower end of the spring 5 abuts against the tapered surface 13 at the bottom of the cavity 11. Since the tapered surface 13 is an inverted cone with a gradually decreasing cross section in the downward direction, it is convenient for the spring 5 to be automatically centered and is beneficial to maintain the spring. The position of 5 is stable, so that the up and down sliding strokes of the sliding seat 3 and the sliding sleeve 2 are smoother.

Referring to Figures 1, 3 and 7, the assembly process of the probe connector 100 is roughly as follows: sequentially insert the sliding seat 3 and the conductive beads 4 into the sliding sleeve 2 from top to bottom, and the sliding The upper end edge of the sleeve 2 is necked to form the upper opening 24. The overall structure composed of the sliding seat 3, the conductive bead 4, and the sliding sleeve 2 and the spring 5 are placed in the cavity 11 of the base 1, wherein the upper end of the spring 5 is accommodated in the sliding seat 3. In the recessed groove 321, the flange 22 of the sliding sleeve 2 is extended into the cavity 11, and finally the upper edge of the base 1 is narrowed to form the opening 12, which prevents the sliding sleeve 2 from coming out upward .

When the probe connector 100 is in the non-docking state shown in FIG. 3, under the action of the upward preloading force provided by the spring 5, the sliding seat 3 pushes the conductive bead 4 upward to make the conductive bead 4 Abutting against the upper opening 24 of the sliding sleeve 2, and a part of the conductive bead 4 protrudes upward from the upper opening 24. At the same time, the conductive bead 4 exerts an upward force on the sliding sleeve 2 so that the flange 22 of the sliding sleeve 2 abuts the upper end of the cavity 11 of the base 1 upwardly.

Referring to Figure 1, Figure 3 and Figure 5 for comparison, when the probe-type connector 100 is connected to another electrical connector (not shown in the figure), the conductive bead 4 moves downward under pressure, pushing the The sliding seat 3 slides down along the receiving cavity 21 of the sliding sleeve 2; when the sliding seat 3 moves down the first interval S1, the abutting surface 331 of the sliding seat 3 abuts against the blocking portion 23 of the sliding sleeve 2 Then, the sliding seat 3 is prevented from moving further downward relative to the sliding sleeve 2. Under the continuous downward pressure of the conductive bead 4, the sliding seat 3 will push the sliding sleeve 2 to continue to move downward together. The abutment surface 331 and the blocking portion 23 maintain close line contact, which is also beneficial to establish a stable electrical connection between the sliding seat 3 and the sliding sleeve 2.

In the docking state shown in FIG. 5, compared to the non-butting state shown in FIG. 3, the conductive bead 4 moves downward for a total stroke in total. If ignoring the slight sliding of the conductive bead 4 along the contact surface 311 of the sliding seat 3, the distance that the conductive bead 4 moves downward in the sliding sleeve 2 is approximately equal to the first interval S1, and the conductive bead 4 further As the sliding sleeve 2 moves downward along the cavity 11 of the base 1 by a partial stroke S2. The total stroke is approximately equal to the first interval S1 plus the partial stroke S2. It is worth mentioning that although the sliding seat 3 in the preferred embodiment is designed to slide up and down in the receiving cavity 21 of the sliding sleeve 2, in some embodiments not shown in the figure, the The sliding seat can also be arranged to be fixed together with the sliding sleeve so as to be non-slidable.

Wherein, the first interval S1 is smaller than the radius of the conductive bead 4. After the conductive bead 4 moves down the first interval S1 in the sliding sleeve 2, the conductive bead 4 still protrudes out of the receiving cavity 21 to Keep docking with another electrical connector.

The sub-stroke S2 mainly depends on the maximum compression amount of the spring 5, which is mainly related to the length and elastic coefficient of the spring 5. In terms of structure, the height of the cavity 11 and the depth of the recessed groove 321 can be set reasonably. Set the length of the spring 5. The compression amount of the spring 5 is not limited by the radius of the conductive bead 4, and can be set to have a larger compression amount according to actual needs, so as to absorb the dimensional tolerances and assembly errors of various components, and ensure that the spring 5 can conduct electricity to the The bead 4 continuously provides elastic crimping force, which improves the contact force between the conductive bead 4 and another electrical connector that is opposite to each other, and improves the stability and reliability of the electrical connection.

In particular, as shown in FIG. 5, since the conductive bead 4 can rotate, when the conductive bead 4 is subjected to a lateral contact force F applied in an oblique direction, the decomposition force of the lateral contact force F in the vertical direction is F2 pushes the conductive bead 4 to move downward, and the horizontal resolution force F1 will push the conductive bead 4 to rotate on the contact surface 311, thereby reducing the risk of the conductive bead 4 being stuck.

As shown in Figure 5, further, the contact surface 311 of the sliding seat 3 is an inclined surface. The sliding seat 3 is offset to the right to press against the inner side wall of the sliding sleeve 2, so that the sliding seat 3 and the sliding sleeve 2 are in stable contact, and the sliding sleeve 2 and the base 1 also have a stable lateral direction. Contact, so that instant interruption is not prone to occur, and the current passing performance is improved, thereby achieving greater current carrying capacity. In some embodiments, based on the new solution, a maximum current carrying capacity of 5A can be achieved.

In addition, the abutting surface 331 of the sliding seat 3 abuts against the blocking portion 23 of the sliding sleeve 2, and the inclined abutting surface 331 forms a line-to-surface contact type with the blocking portion 23, which is a right angle, to further enhance the The contact between the sliding seat 3 and the sliding sleeve 2 is stable.

Based on the above description, compared with the prior art, the probe-type connector 100 of the present application utilizes the rolling characteristics of the conductive beads 4 to reduce the risk of being stuck and improve the lateral contact performance of the probe-type connector 100 And service life. The sliding sleeve 2 can slide up and down in the base 1 along with the conductive bead 4 and the sliding seat 3, and its up and down sliding stroke is not limited by the size of the conductive bead 4, thereby increasing the compression of the spring 5 and absorbing The dimensional tolerances and assembly errors of the components of the probe-type connector 100 maintain the elastic crimping force of the spring 5 on the conductive bead 4, and improve the positiveness between the conductive bead 4 and another electrical connector that is opposite to each other. To improve the stability and reliability of electrical connection.

The above-mentioned content is only the preferred embodiment of the present invention, and is not used to limit the implementation of the present invention. According to the main concept and spirit of the present invention, those of ordinary skill in the art can easily make corresponding adaptations or modifications. Therefore, the present invention The scope of protection shall be subject to the scope of protection required by the claim.

100: Probe connector 1: base 11: Cavity 12: opening 13: Cone 2: Sliding sleeve 21: Containment Chamber 22: flange 23: blocking part 24: upper opening 25: lower opening 3: sliding seat 31: Supporting Department 311: contact surface 32: Guiding section 321: Depressed Groove 33: Transition 331: contact surface 4: Conductive beads 5: Spring A: included angle S1: first interval S2: Split trip F: Lateral contact force F1: Vertical resolution F2: Resolution in the horizontal direction

Fig. 1 is a perspective view of a preferred embodiment of the probe-type connector of the present invention. Fig. 2 is a front view of Fig. 1, in which the probe-type connector is in a non-butting state. Fig. 3 is a cross-sectional view taken along the line A-A in Fig. 2. Fig. 4 is a front view of the probe connector of Fig. 1 in a mated state. Fig. 5 is a cross-sectional view taken along the line B-B in Fig. 4. Fig. 6 is an exploded view of Fig. 1. Fig. 7 is an exploded view of Fig. 1 in different viewing directions.

1: base

11: Cavity

13: Cone

2: Sliding sleeve

21: Containment Chamber

22: flange

23: blocking part

3: sliding seat

311: contact surface

321: Depressed Groove

331: contact surface

4: Conductive beads

A: included angle

S1: first interval

Claims (10)

A probe type connector includes: a base with a cavity inside, an opening at the upper end of the cavity; a sliding sleeve with a receiving cavity extending up and down inside, and a lower end of the sliding sleeve It is slidably installed in the cavity of the base, the upper end of the sliding sleeve protrudes upward from the opening; a conductive bead is spherical, and the conductive bead is installed in the receiving cavity of the sliding sleeve And protrude upward from the receiving cavity; a sliding seat with a contact surface provided at the upper end, the conductive bead is located above the sliding seat and slidably contacting the contact surface; and a spring installed on the base Inside the cavity, the upper end of the spring abuts against the sliding seat, and the lower end abuts against the base. The probe-type connector according to claim 1, wherein the contact surface is an inclined surface extending obliquely with respect to the up-down direction. The probe type connector according to claim 1, wherein a recessed groove is formed at the bottom of the sliding seat; and the upper end of the spring is received in the recessed groove. The probe-type connector according to claim 3, wherein the base is provided with a tapered surface in an inverted cone shape at the bottom of the cavity, and the lower end of the spring abuts against the tapered surface. The probe-type connector according to claim 1, wherein a flange protrudes outward from the bottom of the sliding sleeve, and the flange can abut against the upper end of the cavity, thereby preventing the sliding sleeve from falling upward out. The probe connector according to any one of claims 1 to 5, wherein the The inner wall of the sliding sleeve projects inwardly with a blocking portion; the sliding seat is slidably installed up and down in the receiving cavity of the sliding sleeve, and an abutting surface is formed on the outer periphery of the sliding seat. It can abut against the blocking portion to prevent the sliding seat from further moving downward relative to the sliding sleeve. The probe-type connector according to claim 6, wherein the sliding seat includes a supporting part, a transition part and a guiding part which are sequentially connected from top to bottom, wherein the outer diameter of the supporting part is larger than the The outer diameter of the guide part and the outer peripheral surface of the transition part are inclined and constitute the abutting surface. The probe-type connector according to claim 6, wherein when the probe-type connector is in a non-matching state, there is a first interval between the abutting surface and the blocking portion along the up-down direction. The probe connector according to claim 8, wherein the first interval is smaller than the radius of the conductive bead. The probe type connector according to claim 8, wherein, when the probe type connector is in a docking state, the conductive bead can move downward for a total stroke, and the sliding sleeve can move downward for a partial stroke , The total stroke is roughly equal to the sub-stroke plus the first interval.

Images