Adapter connector

Abstract

The present invention relates to an adapter connector, which can solve the problems of poor tolerance and inconvenient assembly and maintenance when connecting a connector to a printed circuit board in the prior art. The adapter connector includes: a housing, the front end of the housing is a connection end, and the rear end of the housing is a plug-in end; a contact piece, fixed in the housing, the contact piece includes an overhang portion extending forward, the front end of the overhang portion is a crimping end for connecting with a conductive component in a device box, and the crimping end is crimped and connected to the conductive component in a direction perpendicular to the plug-in direction; an escape space is provided in the housing at a position corresponding to the overhang portion for allowing the overhang portion to deform in the crimping direction; a threaded locking sleeve is located on the inner side of the crimping end, and a through hole is provided on the crimping end, the through hole corresponds to the inner hole of the threaded locking sleeve, and is used for an adapter locking piece to pass through, so that the adapter locking piece drives the threaded locking sleeve to press the crimping end and the conductive component together.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and in particular to a transfer connector. Background Art

[0002] In the prior art, some devices are fixed with a printed circuit board. In order to connect the printed circuit board inside the device box with the circuit outside the device box, an external socket is generally installed on the wall of the device box, and then the external socket is connected to the printed circuit board through a conductive adapter to achieve power or signal transmission. Figure 1 and Figure 2 FIG. 1 shows a structure for connecting a printed circuit board to an external circuit in the prior art: a printed circuit board 14 is disposed in a device housing, and the positions of the printed circuit board 14 and the device housing are relatively fixed. A printed circuit board connector 13 is fixedly connected to the printed circuit board 14 by welding or other means. The printed circuit board connector 13 includes an insulating housing and a first contact 131 mounted in the insulating housing. The first contact 131 is L-shaped, and one end thereof is in electrical contact with the printed circuit board 13. The external connector 11 connected to the external circuit includes an insulating shell and a second contact member 111 installed in the insulating shell. The second contact member 111 is in the shape of a socket and can be plugged into and matched with the other end of the first contact member 131. A through hole for the plug-in end of the external connector 11 is provided on the equipment box wall 12. The external connector 11 extends into the equipment box through the through hole and plugs into the printed board connector 13 to achieve conduction between the external circuit and the printed board 14. Bolt through holes are provided on the shell of the external connector 11. When the external connector 11 and the printed board connector 13 are completed, the external connector 11 is locked to the equipment box by bolts.

[0003] Due to the limited space in the equipment box, the existing installation sequence is to first fix the printed circuit board, then connect the printed circuit board connector to the printed circuit board, and finally insert the external connector into the equipment box to mate with the printed circuit board connector. Because the external connector is directly plugged into the printed circuit board connector during installation, this assembly sequence cannot be changed. If the external connector is inserted into the equipment box first, the printed circuit board connector cannot move in the plug-in direction and cannot mate with the external connector.

[0004] The problems with this assembly structure are:

[0005] 1. The external connector is locked to the device case by bolts, that is, the external connector and the device case have a unique matching position. When the position of the printed circuit board and the printed circuit board assembly deviates from the device case due to installation errors or vibration, if the external connector and the printed circuit board connector are to be plugged in, the connection position of the external connector and the device case will be misaligned, and the external connector cannot be locked to the device case. If the external connector can be locked in the device case, the plugging position of the external connector and the printed circuit board connector will be misaligned, and the external connector cannot be plugged in with the printed circuit board connector. The tolerance of the external connector and the printed circuit board connector during plugging is poor.

[0006] 2. The printed circuit board is first fixed in the equipment box, the printed circuit board connector is connected to the printed circuit board, and the external connector is then connected to the printed circuit board connector. The connection structure is complex, the assembly steps are cumbersome, and the operation is inconvenient. Summary of the Invention

[0007] The object of the present invention is to provide a transition connector that can solve the problems of poor tolerance and inconvenient assembly and maintenance when connecting a connector to a printed circuit board in the prior art.

[0008] To achieve the above objectives, the adapter connector in the present invention adopts the following technical solutions:

[0009] The adapter connector includes:

[0010] The front end of the housing is the connection end that extends into the device box, and the rear end of the housing is the plug end for plugging into the adapter plug;

[0011] The contact piece is fixed in the housing, and the contact piece includes an overhang portion extending forward, the front end of the overhang portion is a crimping end for connecting with a conductive component in the device box, and the crimping end is crimped and connected to the conductive component in a direction perpendicular to the plugging direction; an escape space is provided in the housing at a position corresponding to the overhang portion to allow the overhang portion to deform in the crimping direction;

[0012] The threaded locking sleeve is located on the inner side of the crimping end, and a through-hole is provided on the crimping end. The through-hole corresponds to the inner hole of the threaded locking sleeve and is used for allowing the adapter locking piece to pass through, so that the adapter locking piece drives the threaded locking sleeve to move, thereby pressing the crimping end and the conductive component into connection.

[0013] The beneficial effect is that because the conductive component and the contact piece on the adapter connector are in a crimped relationship, there is no requirement for the assembly relationship between the conductive component and the adapter connector. The adapter connector can be inserted into the device box and fixed first, and then the conductive component can be installed. Alternatively, the conductive component can be fixed in the device box first, and then the adapter connector can be inserted into the device box and crimped with the printed circuit board, making assembly and maintenance more convenient. During the connection process, if the installation position of the adapter connector or the conductive component itself is misaligned with the preset position due to factors such as assembly error, the adapter connector can compensate for the distance between the printed circuit board by deforming its contact piece, and still ensure a stable connection. The contact piece can swing by being squeezed to compensate for the distance between the conductive component and the conductive component, or it can swing and press toward the conductive component by the top pressure of the threaded locking sleeve, so that different positions of the contact piece and the conductive component can be used, and the tolerance capability is strong.

[0014] Furthermore, the overhanging part includes a first elastic arm and a second elastic arm, the first elastic arm extends along the plug-in direction, and the second elastic arm extends toward the conductive component along the crimping direction. The first elastic arm and the second elastic arm are connected to make the overhanging part L-shaped, and the end of the second elastic arm is bent toward the plug-in direction to form the crimping end.

[0015] The beneficial effect is that the first elastic arm and the second elastic arm can both swing, which can increase the swing range of the overhanging part of the contact piece, increase the matching position between the contact piece and the conductive component, and improve the tolerance capability.

[0016] Furthermore, the crimping end extends forward from the second elastic arm.

[0017] The beneficial effect is that the crimping end is bent forward, the structure is simple, and it is easy to implement.

[0018] Furthermore, the crimping end includes a guide section parallel to the second elastic arm, and a guide space corresponding to the guide section is provided on the shell for guiding the overhanging part to swing in the shell; the crimping end and the second elastic arm form a U-shaped space, and the threaded locking sleeve is located in the U-shaped space.

[0019] Its beneficial effects are: a guide section is provided at the crimping end, the guide section can cooperate with the hole wall of the guide space, and the second elastic arm can also cooperate with the cavity wall of the corresponding installation cavity, forming the guide section and the second elastic arm to guide the swing of the contact piece at the same time, thereby improving the accuracy of the contact piece movement; the threaded locking sleeve is arranged in the opening of the crimping end, and the shell hole piece corresponding to the crimping end is used to accommodate the threaded locking sleeve, and the crimping end can prevent the threaded locking sleeve from accidentally falling out, and the arrangement of the crimping end and the threaded locking sleeve is optimized, which is convenient for operators to connect two contacts or disassemble and maintain the entire connector.

[0020] Furthermore, the threaded locking sleeve is a nut, and a nut mounting hole extending along the crimping direction is provided on the housing, and the nut is sunk into the nut mounting hole.

[0021] Its beneficial effects are: using a nut as a thread locking sleeve, the nut itself is cheap and easy to obtain, the method of using the hole wall to limit the rotation of the nut is also relatively simple, the hole wall of the nut mounting hole can limit the rotation of the nut, the movement is relatively mature in the existing technology, and the overall structure is easy to maintain.

[0022] Furthermore, an installation cavity for installing a contact piece is provided in the shell, and the part of the installation cavity corresponding to the overhanging part includes two cavity walls opposite to each other in the crimping direction, and the distance between the two cavity walls gradually increases from back to front to form a flared structure; the part of the contact piece that is fixed relative to the shell is clamped at the point where the distance between the two cavity walls in the installation cavity is the smallest, and an avoidance space is formed at the flared position.

[0023] Its beneficial effect is that the distance between the two cavity walls gradually increases, corresponding to the swing stroke of the contact piece. After the contact piece swings into place, it can be supported by the corresponding cavity wall, avoiding bending fatigue and deformation of the contact piece, thereby improving the accuracy of the crimping action.

[0024] Furthermore, an installation cavity for installing a contact piece is provided in the shell, and the portion of the installation cavity corresponding to the overhanging portion includes two cavity walls opposite to each other in the crimping direction, and an elastic support structure is provided between the overhanging portion and the cavity wall for providing an elastic force to drive the contact piece close to the conductive component.

[0025] Its beneficial effects are: setting up an elastic support structure can increase the supporting force on the crimping end, so that the crimping end can move along the crimping direction and crimp better, and setting up an elastic support structure can provide auxiliary support for the contact piece, so that the contact piece is not prone to elastic fatigue.

[0026] Furthermore, the elastic supporting structure is a spring, and both ends of the spring elastically support the outer surface of the overhanging part and the corresponding side cavity wall.

[0027] The beneficial effects are: using springs, simple structure, cheap and easy to obtain, and convenient during assembly and maintenance.

[0028] Furthermore, more than two contact pieces are arranged in the housing, and the overhanging portions of at least two of the contact pieces are arranged at intervals in the crimping direction, and the crimping ends of the contact pieces are arranged at intervals in the plugging direction.

[0029] The beneficial effect is that the overhanging parts of each contact are arranged at intervals in the crimping direction, which can utilize the space of the shell in the crimping direction, improve space utilization, reduce the size of the connector and reduce production and operation and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of connecting an external connector to a printed circuit board connector in the prior art;

[0031] Figure 2 This is a schematic diagram of the prior art when the external connector and the printed board connector are separated, and the printed board is not shown in the figure;

[0032] Figure 3 Schematic diagram of the appearance of the adapter connector embodiment 1 of the present invention;

[0033] Figure 4 Schematic diagram of the contact and housing matching structure of the adapter connector embodiment 1 of the present invention;

[0034] Figure 5 This is a schematic diagram of the adapter connector embodiment 1 of the present invention when connected to a printed circuit board;

[0035] Figure 6 Schematic diagram of the contact and housing matching structure of the adapter connector embodiment 2 of the present invention;

[0036] In the picture:

[0037] 11-external connector; 111-second contact; 12-equipment box wall; 13-printed board connector; 131-first contact; 14-printed board;

[0038] 20 - adapter connector; 21 - housing; 211 - square plate; 22 - first contact; 221 - overhanging portion; 222 - crimping end; 223 - guide section; 23 - second contact; 231 - overhanging portion; 232 - crimping end; 233 - guide section; 24 - first mounting cavity; 25 - second mounting cavity; 26 - first nut; 261 - first nut mounting hole; 27 - second nut; 271 - second nut mounting hole; 28 - first guide space; 29 - second guide space;

[0039] 30-printed circuit board; 40-bolt; 50-equipment box;

[0040] 60 - adapter connector; 61 - housing; 62 - contact piece; 63 - spring. DETAILED DESCRIPTION

[0041] In order to make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present invention and are not intended to limit the present invention. That is, the embodiments described herein are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and illustrated in the drawings herein may be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely intended to represent selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0043] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

[0044] The features and performance of the adapter connector of the present invention are further described in detail below in conjunction with the embodiments.

[0045] Example 1 of the adapter connector of the present invention: The adapter connector of the present invention is used to achieve the conduction of the internal and external circuits of the device. The plug end of the adapter connector is plugged into the adapter plug in the external circuit, and the connecting end of the adapter connector is used to connect to the printed circuit board in the device to achieve the transmission of electrical signals. Figure 3 As shown, adapter connector 20 includes a housing 21 made of an insulating material. A square plate 211 is arranged on the outer circumference of housing 21. Plate 211 is provided with fastener holes for bolts to pass through and securely connect to the device housing. Contacts are arranged within housing 21 and can be press-fitted with printed circuit board contacts (PCB contacts) on printed circuit board 30, which serve as conductive components, thereby achieving circuit continuity. The structure of the contacts themselves and their mating with housing 21 will now be described in detail.

[0046] like Figure 4 As shown, in the present invention, the front end of the adapter connector 20 is a connection end, which is used to be inserted into the equipment box and connected to the printed circuit board contact, and the rear end of the adapter connector 20 is a wiring end, which is connected to the cable or contact in the external circuit.

[0047] Two contacts are arranged in the housing 21, namely a first contact 22 and a second contact 23. The connection positions of the first contact 22 and the second contact 23 with the printed circuit board contacts on the printed circuit board 30 are staggered in the forward and backward directions of the adapter connector 20, that is, the plug-in direction. There is not much difference in structure, so the structure of the first contact 22 is described first.

[0048] The first contact member 22 is formed by bending and other methods, and mainly includes a fixed portion and an overhanging portion 221 along its extension direction. When the contact member is in use, the fixed portion is relatively fixed to the housing 21, while the overhanging portion 221 can swing relative to the fixed portion in the housing 21.

[0049] One end of the fixed part facing away from the overhanging part 221 is connected to a cable or contact in an external circuit, and the other end of the fixed part is connected to the overhanging part 221. The overhanging part 221 can swing around the position where the fixed part and the overhanging part 221 are connected.

[0050] The overhanging portion 221 of the contact is generally L-shaped and comprises two connected first and second elastic arms. The first elastic arm extends in the insertion direction, while the second elastic arm extends perpendicular to the insertion direction. The first and second elastic arms can swing together or independently. The end of the second elastic arm, the end away from the fixed portion, serves as the crimping end 222 where the overhanging portion 221 is crimped into the printed circuit board contact.

[0051] The crimping end 222 is formed by folding the end of the second elastic arm and has a U-shaped cross-section. The opening of the crimping end 222 faces away from the printed circuit board 30. The portion of the crimping end 222 corresponding to the bottom of the "U" is used to crimp with the printed circuit board contact, so that the crimping end 222 as a whole protrudes toward the printed circuit board contact and is exposed at the top of the housing 21. In addition, it is provided with a fastener through-hole for the fastener to pass through and press the crimping end 222 against the printed circuit board contact. Of the two portions of the crimping end 222 corresponding to the side of the "U", one is connected to the second elastic arm, and the other portion corresponding to the side of the "U" is a guide section. The guide section extends away from the printed circuit board contact and is parallel to the second elastic arm.

[0052] A first mounting cavity 24 corresponding to the first contact member 22 is provided in the housing 21. The first mounting cavity 24 comprises two parts: a fixed cavity corresponding to the fixed portion of the first contact member 22, and a swing cavity corresponding to the overhanging portion 221 of the first contact member 22. The fixed cavity secures the fixed portion of the first contact member 22, while the swing cavity prevents the overhanging portion of the first contact member 22 from swinging. A clamp is provided at the junction of the fixed cavity and the swing cavity. The clamp comprises two opposing cavity walls, the spacing between which is no greater than the thickness of the first contact member 22. The clamp is capable of clamping the first contact member 22, allowing the overhanging portion 221 of the first contact member 22 to swing about the mating position between the clamp and the first contact member 22.

[0053] The two walls of the swinging cavity extend forward from the clamping opening along the insertion direction of the adapter connector 20. The spacing between the two walls gradually increases in the direction from the fixed portion to the overhang portion 221, forming a flared structure. This allows the first elastic arm in the overhang portion 221 to swing, allowing the crimping end 222 to approach the printed circuit board contact. The first mounting cavity 24 also reserves space for the second elastic arm to swing, allowing the first elastic arm to swing alone, the second elastic arm to swing alone, or both arms to swing simultaneously. When the first contact 22 swings, the guide section 223 on it also moves. A corresponding first guide space 28 is provided in the housing 21 to accommodate the guide section 223. When the guide section 223 contacts the walls of the first guide space 28, it guides the crimping end 222 toward or away from the printed circuit board contact. Simultaneously, the second elastic arm cooperates with the walls of the corresponding mounting cavity, allowing the guide section 223 and the second elastic arm to simultaneously guide the swinging of the contact, ensuring accurate movement.

[0054] The structure of the second contact 23 in the housing 21 is similar to that of the first contact 22, comprising a fixed portion and an overhanging portion 231. The overhanging portion 231 is also L-shaped, with a crimping end 232 at the end thereof adapted to crimp with the printed circuit board contact. Adaptively, a second mounting cavity 25 is also provided in the housing 21. This cavity is divided into a fixed cavity and a swinging cavity along the direction from the fixed portion toward the overhanging portion 231, respectively, to secure the second contact 23 and prevent it from swinging. Furthermore, a guide section 233 is provided on the second contact 23, and a second guide space 29 adapted to the guide section 233 is provided in the housing 21.

[0055] The difference between the second contact 23 and the first contact 22 is that the first spring arm of the second contact 23 is located below the first contact 22. Therefore, to ensure that the crimping ends 222 and 232 of the two contacts are in the same plane, the first spring arm and the second spring arm of the second contact 23 are longer than the corresponding spring arms of the first contact 22. This makes the overhanging portions of the two contacts spaced apart in the crimping direction, and the crimping ends of the two contacts spaced apart in the plugging direction.

[0056] Two nuts serving as threaded locking sleeves are located on the housing 21, on the sides of the first and second contacts 22 and 23 facing away from the printed circuit board. These nuts are a first nut 26 corresponding to the crimping end 222 on the first contact 22, and a second nut 27 corresponding to the crimping end 232 on the second contact 23. Both the first and second nuts 26 and 27 are capable of moving within the housing 21 in the direction in which the two contacts press against the printed circuit board. Correspondingly, the housing is provided with a first nut mounting hole 261 and a second nut mounting hole 271. The first nut mounting hole 261 is a square hole that matches the shape of the first nut 26, and its walls restrict the rotation of the first nut 26. The second nut mounting hole 271 is a square hole that matches the shape of the second nut 27, and its walls also restrict the rotation of the second nut 27.

[0057] like Figure 5 As shown, when in use, the adapter connector 20 first passes through the mounting hole on the device case 50, so that the end of the adapter connector 20 enters the device case 50, and then connects to the printed circuit board 30 that has been fixed in the device case 50. The printed circuit board 30 is located above the adapter connector 20. The printed circuit board is equipped with bolts 40 as locking adapters. The bolts 40 are aligned with the two nuts on the adapter connector 20 and tightened. The bolts 40 and the nuts can rely on the cooperation between the bolts 40 and the nuts to clamp the contacts on the adapter connector 20 and the printed circuit board contacts on the printed circuit board together.

[0058] During the connection process, if there is a position error between the adapter connector 20 and the printed circuit board 30, the adapter connector 20 needs to compensate for the distance from the printed circuit board contact on the printed circuit board 30 by swinging and deforming its contacts.

[0059] 1) After the adapter connector 20 is inserted, when the position of the contact on it is closer to the printed circuit board than the set position of the contact, the contact can be pressed against the printed circuit board contact through the deformation of the first elastic arm and the second elastic arm, and then the bolt 40 and the nut are used to press the crimping end against the printed circuit board contact.

[0060] 2) After the adapter connector 20 is inserted, if the contacts are positioned further away from the printed circuit board than their intended positions, bolts 40 are inserted through the printed circuit board 30, the first contact 22, and the second contact 23, threading the bolts 40 into the first and second nuts 26, 27. Because the nuts are restricted from rotating, when the bolts 40 rotate, the nuts and bolts 40 form a screw-nut mechanism, causing the nuts to move axially along the bolts 40. As the nuts rise, they press the first and second contacts 22, 23 against the printed circuit board contacts on the printed circuit board 30.

[0061] To ensure that the nut can rise, an elastic washer can be installed on the bolt 40. The elastic washer is located between the bolt head and the upper surface of the printed circuit board when the bolt 40 and the nut are screwed together. As the bolt 40 and the nut are tightened, the elastic washer is also compressed, and at the same time, a force is provided to pull the bolt 40 outward in the direction away from the nut, so that the nut is lifted up with the bolt 40, driving the first contact member 22 and the second contact member 23 to deform and press them on the printed circuit board contact member.

[0062] At the same time, because the printed circuit board and the adapter connector 20 are in a crimping relationship, there is no requirement for the assembly relationship between the printed circuit board and the adapter connector 20. The adapter connector 20 can be first inserted into the device case 50 and fixed, and then the printed circuit board can be crimped onto the adapter connector 20. Alternatively, the printed circuit board can be fixed in the device case 50 first, and then the adapter connector 20 can be inserted into the device case 50 and crimped to the printed circuit board. During the connection process, if the installation position of the adapter connector 20 or the printed circuit board itself is misaligned with the preset position due to factors such as assembly errors, the adapter connector 20 can compensate for the distance between the adapter connector 20 and the printed circuit board through the deformation of the contact parts, and can still ensure a stable connection.

[0063] The structure and usage of the adapter connector in the present invention are not limited to the contents provided in the above embodiment 1, but also include the contents supplemented by the following embodiments.

[0064] Embodiment 2 of the adapter connector of the present invention is different from the above embodiments in that Figure 6 As shown, in this embodiment of the adapter connector 60, a housing 61 is provided with a mounting cavity and two contacts. A spring 63, serving as an elastic support structure, is installed between the first cantilever arms of the two contacts 62 and the cavity wall. The ends of the spring 63 respectively support the outer surface of the contacts 62 and the cavity wall. The cavity wall, which supports the ends of the spring 63, is a straight wall extending along the insertion direction of the adapter connector 60, providing stable support for the spring 63.

[0065] When the contact member 62 swings, the spring 63 can deform with the swing of the contact member 62. The spring 63 can provide a force to the contact member 62 through its own deformation, causing the contact member 62 to press against the conductive component. The use of an elastic member can solve the problem of the contact member being made of a material with high conductivity but a low elastic deformation coefficient. The elastic member can assist in the deformation of the contact member, ensuring that the contact member can be pressed against the printed circuit board through the swing. Alternatively, a spring for elastically supporting the contact member can be arranged between the second cantilever of the contact member and the corresponding mounting cavity wall. In other embodiments, the elastic member can be replaced with other commonly used structures such as elastic gaskets and elastic pillars.

[0066] Embodiment 3 of the adapter connector of the present invention differs from the above-mentioned embodiments in that the overhang portion of the contact in this embodiment is in the shape of a straight line, extending obliquely toward the conductive component of the printed circuit board. The crimping end extends in a direction parallel to the insertion direction. The overhang portion is tilted to elevate the crimping end, bringing it closer to the conductive component. Alternatively, the end of the straight-line overhang portion is bent backward at least twice to form an angled or U-shaped crimping end, resulting in a spoon-shaped overhang portion. Of course, the overhang portion functions to enable the contact to swing, and the overhang portion can also adopt a serpentine or other shape that does not affect swinging.

[0067] Example 4 of the adapter connector of the present invention differs from the previous examples in that the crimping end on the overhang portion of this embodiment is flush with the overhang portion, with a through-hole punched at the end of the overhang portion for the fastener to pass through and thread onto the nut, resulting in the entire overhang portion of the contact piece forming a straight line. In this case, the crimping end is no longer formed by bending, but can be considered as punching the fastener through-hole through the contact piece by blanking. The layout of the contacts also requires adjustment, adopting a straight line structure with parallel arrangement of the contacts.

[0068] Embodiment 5 of the adapter connector in the present invention: The difference from the above embodiments is that the cross-section of the crimping end located at the end of the overhanging part in this embodiment is L-shaped, and the crimping end includes two connected elastic arms, one of which is provided with a through hole for a fastener to pass through. When in use, the elastic arm is crimped with the printed circuit board contact, and no guide section is provided on it.

[0069] Embodiment 6 of the adapter connector in the present invention: The difference from the above embodiments is that, in the installation cavity for installing the contact piece in this embodiment, the part corresponding to the overhanging part still includes two opposite cavity walls, and the two cavity walls are arranged in parallel, and are not limited to the scheme of gradually approaching the two cavity walls.

[0070] Example 7 of the adapter connector in the present invention: The difference from the above-mentioned embodiments is that the nut mounting hole in this embodiment is still a square hole, and the corresponding dimensions of the square hole are all larger than the corresponding dimensions of the nut, that is, there is a gap between the nut and the nut mounting hole, which enables the nut to move horizontally along the axial direction of the nut mounting hole in the nut mounting hole. When the nut rotates, it will be hindered by the wall of the nut mounting hole, so that the nut can only rotate through a small angle and cannot continue to rotate. It will be restricted by the hole wall and can only move horizontally along the axial direction of the nut mounting hole.

[0071] Embodiment 8 of the adapter connector in the present invention: The difference from the above embodiments is that, in this embodiment, the threaded locking sleeve can also adopt a sleeve body, and an external thread is provided on the outer peripheral surface of the sleeve body, and a sleeve body mounting hole for accommodating the sleeve body is correspondingly provided in the shell, and an internal thread adapted to the external thread of the sleeve body is provided on the hole wall of the sleeve body mounting hole. The center hole of the sleeve body adopts a square hole structure, and the locking adapter adapted to the sleeve body is a rod member, and the head of the rod member can cooperate with the square hole in the sleeve body to prevent rotation. The operator drives the sleeve body to rotate in the shell by rotating the rod body, and the upward or downward spiral rotation of the shell can tighten the crimping end of the contact piece or loosen the crimping end of the contact piece.

[0072] Embodiment 9 of the adapter connector of the present invention differs from the above embodiments in that the threaded locking sleeve in this embodiment can also be a sleeve body, and the axis of the sleeve body is parallel to the crimping direction. The inner circumference of the sleeve body is provided with a spiral groove extending around the axis of the sleeve body. The locking adapter adapted for the threaded locking sleeve includes a bolt, and the bolt is provided with a rod inserted into the spiral groove. When the bolt rotates, the rod slides in the spiral groove, and the movement of the thread drive causes the rod to cooperate with the bolt groove wall to drive the entire sleeve body toward the bolt until the end of the sleeve body presses the crimping end against the conductive component. At this time, the bolt and the sleeve body are locked, the bolt cannot rotate, and the sleeve body cannot move.

[0073] Embodiment 10 of the adapter connector of the present invention differs from the above embodiments in that the elastic support structure in this embodiment is a spring arm integrally formed with the contact. Specifically, the spring arm is formed on the contact by punching and bending, and elastically supports the wall of the mounting cavity, assisting the contact in swinging. Alternatively, the housing is made of an elastic insulating material, and the elastic support structure can also be a column, boss, or other structure integrally formed with the housing, protruding from the wall of the mounting cavity.

[0074] Embodiment 11 of the adapter connector in the present invention: The difference from the above embodiments is that in this embodiment, only one contact piece may be provided, or more than three contact pieces may be provided. At this time, when the contact pieces are arranged, the overhanging parts of each contact piece are parallel, the crimping ends are also parallel, and the crimping ends are in the same plane.

[0075] Example 12 of the adapter connector in the present invention: The difference from the above-mentioned embodiments is that the contact piece in this embodiment is made of a material that cannot undergo elastic deformation, and the threaded locking sleeve can drive the contact piece to undergo plastic deformation when it is in action, so that the crimping end of the contact piece is pressed tightly on the conductive component. At this time, the deformation of the contact piece cannot be restored.

[0076] Example 13 of the adapter connector in the present invention: The difference from the above-mentioned embodiments is that the threaded locking sleeve in this embodiment still adopts a nut, and the nut can be fixedly connected to the crimping end of the contact piece. The bolt serving as the locking adapter is threadedly connected to the nut, and the rotation of the nut itself is restricted by the contact piece. The nut will move horizontally in the axial direction of the bolt, and the contact piece will swing and deform, so that the crimping end of the contact piece is crimped onto the matching conductive component. At this time, there is no need to set a mounting hole in the shell to achieve anti-rotation fit with the outer peripheral surface of the nut.

[0077] The specific implementation methods described above further illustrate the invention objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Adapter connector, characterized in that, include: The front end of the housing is the connection end that extends into the device box, and the rear end of the housing is the plug end for plugging into the adapter plug; The contact piece is fixed in the housing, and the contact piece includes an overhang portion extending forward, the front end of the overhang portion is a crimping end for connecting with a conductive component in the device box, and the crimping end is crimped and connected to the conductive component in a direction perpendicular to the plugging direction; an escape space is provided in the housing at a position corresponding to the overhang portion to allow the overhang portion to deform in the crimping direction; The threaded locking sleeve is located on the inner side of the crimping end, and a through hole is provided on the crimping end. The through hole corresponds to the inner hole of the threaded locking sleeve and is used for the adapter locking piece to pass through, so that the adapter locking piece drives the threaded locking sleeve to move, and the crimping end is pressed and connected with the conductive component. There are more than two contact pieces arranged in the shell, and the overhanging parts of at least two contact pieces are arranged at intervals in the crimping direction. The crimping ends of the contact pieces are arranged at intervals in the plug-in direction. The overhanging part of the contact piece is L-shaped, including two connected first elastic arms and a second elastic arm. The first elastic arm extends along the plug-in direction, and the second elastic arm extends toward the conductive component along the crimping direction. The first elastic arm and the second elastic arm can swing simultaneously or individually.

2. The adapter connector according to claim 1, wherein: The end of the second elastic arm is bent toward the plugging direction to form the crimping end.

3. The adapter connector according to claim 2, wherein: The crimping end extends forward from the second elastic arm.

4. The adapter connector according to claim 3, wherein: The crimping end includes a guide section parallel to the second elastic arm, and a guide space corresponding to the guide section is provided on the shell for guiding the overhanging part to swing in the shell; the crimping end and the second elastic arm form a U-shaped space, and the threaded locking sleeve is located in the U-shaped space.

5. The adapter connector according to any one of claims 1 to 4, characterized in that: The threaded locking sleeve is a nut, and a nut mounting hole extending along the crimping direction is provided on the housing, and the nut is sunk into the nut mounting hole.

6. The adapter connector according to any one of claims 1 to 4, characterized in that: An installation cavity for installing a contact piece is provided in the shell. The part of the installation cavity corresponding to the overhanging part includes two cavity walls opposite to each other in the crimping direction. The distance between the two cavity walls gradually increases from back to front to form a flared structure; the part of the contact piece that is fixed relative to the shell is clamped at the point where the distance between the two cavity walls in the installation cavity is the smallest, and an avoidance space is formed at the flared position.

7. The adapter connector according to any one of claims 1 to 4, characterized in that: An installation cavity for installing a contact piece is provided in the shell. The portion of the installation cavity corresponding to the overhanging portion includes two cavity walls opposite to each other in the crimping direction. An elastic support structure is provided between the overhanging portion and the cavity wall for providing an elastic force to drive the contact piece close to the conductive component.

8. The adapter connector according to any one of claims 7, wherein: The elastic supporting structure is a spring, and both ends of the spring elastically support the outer surface of the overhanging part and the corresponding side cavity wall.

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