Patent Description:
Power connectors are widely used in communication equipment, household appliances, industrial equipment, aerospace and military fields, especially the signal transmission module of base stations in the communication field. With the rapid development of industrial electronic technology, intelligent automobile and communication market, the market demand for power connectors is also increasing. In addition, the rapid development of science and technology level and the rapid penetration of electronic products into various fields have prompted power connectors to develop in a direction of miniaturization, convenience, low cost, high reliability, strong versatility and simple structure.

The power connector in the prior art has the problems of complex structure, complicated mounting, large space occupation and high production cost. In order to avoid complex jumpers, the existing jumper-free power connectors are mostly complex structures with three parts: a socket, an adapter and a PCB board connector. the entire inner PCB board of the RU unit requirements to be removed during assembling and disassembling, which is a cumbersome process and has many failure steps. In addition, due to the high requirements for jumper-free power connectors due to the floating and tolerance of the PCB board position, most of these power connectors can only be applied to PCB board with a fixed height position, resulting in poor versatility and great limitation on application occasions of the connector. Related technology is known from <CIT>.

Aiming at the deficiencies in the prior art, the present disclosure provides a quick-locking piston-type floating power connector as set out in the appended claims, and the specific technical scheme is as follows:
A quick-locking piston-type floating power connector includes a housing assembly, a contact assembly and a base assembly. The housing assembly is sleeved on an outer wall of one end of the base assembly. One end of the contact assembly is fixed in the base assembly, and the other end of the contact assembly protrudes from the base assembly. A protruding portion of the other end of the contact assembly is embedded in a cover plate assembly. An end portion of the other end of the contact assembly is vertically provided with a floating contact member of a piston-type structure. The floating contact assembly is mounted in the cover plate assembly, and a mounting port of the floating contact assembly protrudes from the cover plate assembly. The floating contact member is adapted to meet the electrical assembly requirements of PCB boards of different heights.

Further, the floating contact member includes a sleeve, a crown spring and a guide pin. A bottom of the guide pin is embedded in an end portion of the contact assembly, the guide pin extends into an inner bottom portion of the sleeve, an inner top portion of the sleeve is provided with an inner thread structure , an outer wall of the guide pin is sleeved with the crown spring, the crown spring is disposed between the sleeve and the guide pin, and the crown spring, the guide pin and the sleeve are in electrical contact via elastic crimping.

Further, the guide pin includes a cylinder and a positioning seat. An outer wall of the positioning seat is of a sawtooth structure, the positioning seat is assembled in the contact assembly in an interference fit, the cylinder is concentrically provided on a top surface of the positioning seat, an outer wall of the cylinder is vertically and symmetrically provided with a limiting block, the sleeve has a shape of a hollow cylinder, the cylinder is mounted in an inner bottom portion of the sleeve, a bottom portion of the sleeve is symmetrically provided with a limiting groove, the limiting block extends into the limiting groove, and the limiting block is configured to prevent the sleeve from rotating horizontally. An inner wall of the cover plate assembly is provided with a matching groove, the matching groove is a circular groove, and the sleeve is embedded in the matching groove.

Further, a conical protrusion protrudes from an inner wall of the limiting groove, the conical protrusion blocks at a bottom portion of the limiting block, and the conical protrusion is configured to prevent the sleeve from separating in a vertical direction.

Further, the guide pin includes a cylinder and a positioning seat. An outer wall of the positioning seat is of a sawtooth structure, the positioning seat is assembled in the contact assembly in an interference fit, the cylinder is concentrically provided on a top surface of the positioning seat, the sleeve includes an upper barrel and a lower barrel, the upper barrel has a ring structure, the lower barrel has a structure of an outer square and an inner circle, the upper barrel is provided on a top portion of the lower barrel , the cylinder extends into the lower barrel, an inner wall of the cover plate assembly is provided with a matching groove, a top portion of the matching groove is a circular groove, a bottom portion thereof is a rectangular groove, the upper barrel is embedded in the circular groove, a rectangular surface of an outer wall of the lower barrel is attached to and embedded in the rectangular groove, and the rectangular groove is configured to prevent the sleeve from rotating horizontally.

Further, an inner wall of the circular groove is provided with a concave floating sliding groove, a top portion of an outer wall of the upper barrel is provided with an upper baffle ring, a middle portion of the outer wall of the upper barrel is provided with a floating ring, the floating ring is slidably embedded in the floating sliding groove, the upper baffle ring is provided on a top portion of the cover plate assembly, and the floating ring and the upper baffle ring are configured to prevent the sleeve from separating in a vertical direction.

Further, the contact assembly includes a positioning conductor and an external conductor. The positioning conductor is embedded in the base assembly, the external conductor protrudes from the base assembly, the external conductor is embedded in the cover plate assembly, an outer wall of the positioning conductor is provided with a annular groove, an outer portion of the annular groove is sleeved with an elastic locking ring, an outer wall of the positioning conductor is provided with a barb, both sides of an end portion of the positioning conductor have flat surfaces, the locking ring, the barb, and the flat surfaces are all matched with an inner wall of the base assembly, the external conductor includes a bending section and an external plate, the bending section is of a slope structure inclined downward, one end of the bending section is connected to the positioning conductor, the other end of the bending section is connected to the external plate, and a surface of the external plate is vertically provided with the floating contact member.

Further, an inner wall of the cover plate assembly is provided with a groove matching with the external conductor, the inner wall of the groove is provided with a protruding rib, and the rib is configured to fill a gap between the external conductor and the groove.

The beneficial effects of the present disclosure are:.

In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the present disclosure will be further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure, but not to limit the present disclosure.

As shown in <FIG>, a quick-locking piston-type floating power connector includes a housing assembly <NUM>, a contact assembly <NUM>, and a base assembly <NUM>. The housing assembly <NUM> is sleeved on an outer wall of one end of the base assembly. One end of the contact assembly <NUM> is fixed in the base assembly <NUM>, the other end of the contact assembly <NUM> protrudes from the base assembly <NUM>. A protruding portion of the other end of the contact assembly <NUM> is embedded in the cover plate assembly <NUM>. An end portion of the other end of the contact assembly is vertically provided with a floating contact member <NUM> of a piston-type structure. The floating contact member <NUM> is mounted in the cover plate assembly <NUM>, a mounting port of the floating contact member <NUM> protrudes from the cover plate assembly <NUM>, and the floating contact member <NUM> is adapted for electrical assembly requirements of PCB boards of different heights. The power connector with an integrated structure is form by matching and assembling of the housing assembly <NUM>, the contact assembly <NUM>, the base assembly <NUM>, the cover plate assembly <NUM>, and the floating contact member <NUM>, which eliminates the complicated assembly process of the conventional connector and is directly made into an integrated structure, which is easy to insert and disassemble, and greatly simplifies the mounting and maintenance of the connector. Meanwhile, the floating contact member <NUM> can adjust a height of the mounting port according to a position of the PCB board, which greatly increases the versatility and reliability of the connector.

As shown in <FIG>, the contact assembly <NUM> includes a positioning conductor <NUM> and an external conductor <NUM>. The positioning conductor <NUM> is embedded in the base assembly <NUM>. The external conductor <NUM> protrudes from the base assembly <NUM> and is embedded in the cover plate assembly <NUM>. An outer wall of the positioning conductor <NUM> is provided with an annular groove <NUM>, and an elastic locking ring <NUM> is sleeved on the outside of the annular groove <NUM>. An outer wall of the positioning conductor <NUM> is provided with a barb, and both sides of an end portion of the positioning conductor <NUM> are flat surfaces <NUM>. The locking ring <NUM>, the barb and the flat surface <NUM> are all matched with an inner wall of the base assembly <NUM>. The external conductor <NUM> includes a bending section <NUM> and an external plate <NUM>. The bending section <NUM> is of a slope structure inclined downward. One end of the bending section <NUM> is connected to the positioning conductor <NUM>, and the other end thereof is connected to the external plate <NUM>. A surface of the outer plate <NUM> is vertically provided with the floating contact member <NUM>. The bending section <NUM> is capable of fully reducing a height position of the external plate <NUM>, thereby greatly reducing an overall size of the connector. The flat surface <NUM> prevents the contact assembly from deflecting in the base assembly <NUM>, and has a positioning effect. The locking ring and the barb can improve the positioning strength of the contact assembly.

As an improvement of the aforementioned technical solution, an inner wall of the cover plate assembly <NUM> is provided with a groove <NUM> matching with the external conductor <NUM>, and an inner wall of the groove <NUM> is provided with a protruding rib <NUM>. The rib <NUM> is configured to fill a gap between the external conductor <NUM> and the groove <NUM>. The rib <NUM> can reduce a gap between the cover plate and the external conductor <NUM>, thus improving the matching strength of the two, and prevent the cover plate assembly from shaking after assembly.

As an improvement of the aforementioned technical solution, the floating contact member <NUM> includes a sleeve <NUM>, a crown spring <NUM> and a guide pin <NUM>. A bottom of the guide pin <NUM> is embedded in an end portion of the contact assembly <NUM>, and the guide pin <NUM> extends into an inner bottom portion of the sleeve <NUM>. An inner top portion of the sleeve <NUM> is provided with an inner thread structure, and an outer wall of the guide pin <NUM> is sleeved with the crown spring <NUM>. The crown spring <NUM> is arranged between the sleeve <NUM> and the guide pin <NUM>. The crown spring <NUM>, the guide pin <NUM> and the sleeve <NUM> are in electrical contact via elastic crimping. On the one hand, the crown spring <NUM> with an electrical structure achieves electrical contact between the guide pin <NUM> and the sleeve <NUM>. On the other hand, the crown spring <NUM> with an electrical structure is capable of improving the matching strength between the guide pin <NUM> and the sleeve <NUM>, such that the three are connected more closely, and the structural strength and the electrical transmission can be guaranteed during the floating process. The guide pin <NUM> is configured to be connected to the contact assembly <NUM>, and serves as a guide and support component for the floating of the sleeve <NUM> at the same time. The sleeve <NUM> is configured to be connected to the external PCB board via screws, and can slide up and down to adjust a position of the mounting port.

The housing assembly <NUM> is also provided with a push-pull quick-locking ceramic bead structure and an interface-sealed O-ring. Both ends of the guide pin <NUM> have arc-shaped transition structures to reduce the resistance during assembly. The cover plate assembly <NUM> includes two cover plates buckled together.

Two embodiments of the aforementioned floating contact member <NUM> are exemplarily described below. Of course, the implementation of the floating contact member <NUM> is not limited to the following two embodiments.

As shown in <FIG>, the guide pin <NUM> includes a cylinder <NUM> and a positioning seat <NUM>. An outer wall of the positioning seat <NUM> is of a sawtooth structure, and the positioning seat <NUM> is assembled in the contact assembly <NUM> in an interference fit. The cylinder <NUM> is concentrically provided on a top surface of the positioning seat <NUM>, and an outer wall of the cylinder <NUM> is vertically and symmetrically provided with a limiting block <NUM>. The sleeve <NUM> has a shape of a hollow cylinder, and the cylinder <NUM> is mounted in an inner bottom portion of the sleeve <NUM>. A bottom portion of the sleeve <NUM> is symmetrically provided with a limiting groove <NUM>, the limiting block <NUM> extends into the limiting groove <NUM>, and the limiting block <NUM> is configured to prevent the sleeve <NUM> from rotating horizontally. The interference assembled positioning seat <NUM> can improve the connection strength of the guide member <NUM> and the contact assembly <NUM>. The limiting block <NUM> is capable of reversely blocking the sleeve <NUM>, such that the sleeve cannot rotate, meanwhile the limiting block <NUM> can slide up and down in the limiting groove <NUM> to ensure that the sleeve can float up and down.

The inner wall of the cover plate assembly <NUM> is provided with a matching groove <NUM>, the matching groove <NUM> is a circular groove, and the sleeve <NUM> is embedded in the matching groove <NUM>. The matching groove <NUM> is configured to restrain the positioning sleeve <NUM> from the outside, and prevents the sleeve from deflecting, such that the sleeve can only move up and down.

A conical protrusion <NUM> protrudes from an inner wall of the limiting groove <NUM>, the conical protrusion <NUM> blocks at a bottom portion of the limiting block <NUM>, and the conical protrusion <NUM> is configured to prevent the sleeve from separating in a vertical direction. When the sleeve moves upward and is about to exceed the warning value, the limiting block <NUM> will abut the conical protrusion <NUM>, such that the sleeve cannot continue to move upward, so as to achieve blocking in the vertical direction and prevent the sleeve from separating, while constraining a movement range of the sleeve.

An internal threaded hole <NUM>, a mounting hole <NUM>, a limiting groove <NUM> and a conical protrusion <NUM> are provided in sequence from top to bottom inside the sleeve <NUM>. The inner threaded hole <NUM> is configured to be connected to the screw, the mounting hole <NUM> is a mounting position of the crown spring and the guide pin, the limiting groove <NUM> and the mounting hole <NUM> are distributed in a cross, and the bottom portion of the limiting groove <NUM> is provided with a conical protrusion <NUM>.

When the first embodiment is implemented specifically: the positioning conductor <NUM> of the contact assembly <NUM> is latched and embedded into the base assembly <NUM>, the locking ring <NUM>, the barb and the flat surface <NUM> are all matched with the inner wall of the base assembly, and the external conductor <NUM> protrudes from the base assembly <NUM>. Then the housing assembly <NUM> is rotatably mounted on a tail end of the base assembly, and the positioning seat <NUM> at the bottom of the floating contact member <NUM> is crimped in a circular hole of the external plate <NUM> in an interference fit. After the floating contact member <NUM> and the contact assembly <NUM> are assembled, the cover plate assembly <NUM> is latched to the outside of the external conductor, and the cover plate assembly <NUM> performs positioning protection for the external conductor and the floating contact member.

When the PCB board <NUM> is connected, a protruding height of the sleeve <NUM> is adjusted according to a position of the PCB board <NUM>. When adjusting, the sleeve <NUM> is pulled upward, and the sleeve <NUM> slides along the matching groove <NUM> on the inner wall of the cover plate assembly <NUM>. The limiting block <NUM> slides relatively downward in the limiting groove <NUM>, the sleeve <NUM> will also follow and move upward with the crown spring <NUM>, and the crown spring <NUM> is kept in a contracted state clamped by the guide pin and the sleeve. After adjusting to a required position, the PCB board is disposed on a top surface of the sleeve, such that a reserved hole of the PCB board screw aligns at a top of the sleeve, and then the screw <NUM> is screwed through the reserved hole and into the sleeve. During the screwing process, the limiting block <NUM> will reversely block the sleeve to prevent the sleeve from rotating. After the screw is completely screwed, the electrical connection between the floating contact member <NUM> and the PCB board can be achieved.

The guide pin <NUM> includes a cylinder <NUM> and a positioning seat <NUM>. An outer wall of the positioning seat <NUM> is of a sawtooth structure. The positioning seat <NUM> is assembled in the contact assembly <NUM> in an interference fit. The cylinder <NUM> is concentrically provided on the top surface of the positioning seat <NUM>. The sleeve <NUM> includes an upper barrel <NUM> and a lower barrel <NUM>. The upper barrel has a ring structure, the lower barrel has a structure of an outer square and an inner circle. The upper barrel <NUM> is disposed on a top portion of the lower barrel <NUM>, and the cylinder <NUM> extends into the lower barrel <NUM>. The interference assembled positioning seat <NUM> can improve the connection strength between the guide member <NUM> and the contact assembly <NUM>.

The inner wall of the cover plate assembly <NUM> is provided with a matching groove, the top portion of the matching groove is a circular groove, and the bottom portion thereof is a rectangular groove. The upper barrel <NUM> is embedded in the circular groove, and the lower barrel <NUM> is embedded in the rectangular groove. The rectangular groove is configured to prevent the sleeve from rotating horizontally. The lower barrel <NUM> with a rectangular surface can match with the rectangular groove, thereby reversely counteracting a torsion force caused by the screw to the sleeve, thereby preventing the sleeve from rotating. The design is simple in structure, can be processed by conventional processing equipment, and has a low cost and a long service life.

An inner wall of the circular groove is provided with a concave floating sliding groove, a top portion of an outer wall of the upper barrel <NUM> is provided with an upper baffle ring <NUM>, and a middle portion of the outer wall of the upper barrel <NUM> is provided with a floating ring <NUM>. The floating ring <NUM> is slidably embedded in the floating sliding groove, the upper baffle ring <NUM> is disposed on a top portion of the cover plate assembly, and the floating ring <NUM> and the upper baffle ring <NUM> are configured to prevent the sleeve <NUM> from separating in the vertical direction. When the sleeve <NUM> moves, the floating ring <NUM> will be driven by the sleeve <NUM> to slide along the floating sliding groove, and the floating sliding groove can constrain the floating stroke of the sleeve, while avoiding the sleeve from disengaging upwards.

An inner top of the upper barrel <NUM> is provided with an internal threaded hole <NUM>.

When the second embodiment is implemented specifically: the positioning conductor <NUM> of the contact assembly <NUM> is latched and embedded into the base assembly <NUM>, the locking ring <NUM>, the barb and the flat surface <NUM> are all matched with the inner wall of the base assembly, and the external conductor <NUM> protrudes from the base assembly <NUM>. Then the housing assembly <NUM> is rotatably mounted on a tail end of the base assembly, and the positioning seat <NUM> at the bottom of the floating contact member <NUM> is crimped in a circular hole of the external plate <NUM> in an interference fit. After the floating contact member <NUM> and the contact assembly <NUM> are assembled, the cover plate assembly <NUM> is latched to the outside of the external conductor, and the cover plate assembly <NUM> performs positioning protection for the external conductor and the floating contact member.

Claim 1:
A quick-locking piston-type floating power connector, comprising a housing assembly (<NUM>), a contact assembly (<NUM>), and a base assembly (<NUM>), wherein the housing assembly (<NUM>) is sleeved on an outer wall of one end of the base assembly (<NUM>), the contact assembly (<NUM>) extends horizontally, one end of the contact assembly (<NUM>) is fixed in the base assembly (<NUM>), the other end of the contact assembly (<NUM>) protrudes from the base assembly (<NUM>), a protruding portion of the other end of the contact assembly (<NUM>) is embedded in a cover plate assembly (<NUM>), an end portion of the other end of the contact assembly (<NUM>) is provided with a floating contact member (<NUM>) of a piston-type structure, the floating contact member (<NUM>) extends vertically and is mounted in the cover plate assembly (<NUM>), a mounting port of the floating contact member (<NUM>) protrudes from the cover plate assembly (<NUM>), and the floating contact member (<NUM>) is adapted to meet the electrical assembly requirements of a PCB board (<NUM>);
wherein the floating contact member (<NUM>) comprises a sleeve (<NUM>), a crown spring (<NUM>), and a guide pin (<NUM>), a bottom of the guide pin (<NUM>) is embedded in an end portion of the contact assembly (<NUM>), the guide pin (<NUM>) extends into an inner bottom portion of the sleeve (<NUM>), an inner top portion of the sleeve (<NUM>) is provided with an inner thread structure, an outer wall of the guide pin (<NUM>) is sleeved with the crown spring (<NUM>), the crown spring (<NUM>) is disposed between the sleeve (<NUM>) and the guide pin (<NUM>), and the crown spring (<NUM>), the guide pin (<NUM>), and the sleeve (<NUM>) are in electrical contact via elastic crimping, and the sleeve (<NUM>) is configured to be slidable up and down to adjust a position of the mounting port of the floating contact member (<NUM>).