CN113423174B

CN113423174B - Circuit board assembly

Info

Publication number: CN113423174B
Application number: CN202110964848.6A
Authority: CN
Inventors: 李大鹏; 刘梦杰
Original assignee: Changzhou Xiehe Photoelectric Device Co ltd
Current assignee: Changzhou Xiehe Photoelectric Device Co ltd
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2021-11-19
Anticipated expiration: 2041-08-23
Also published as: CN113423174A

Abstract

The invention relates to the technical field of circuit boards, in particular to a circuit board assembly. The present invention provides a circuit board assembly, comprising: a plurality of plug bodies, each plug body falls into two rows and arranges on the circuit board, and the plug body includes: the outer sleeve, the inner sleeve and the connecting piece are hollow, and the inner sleeve is arranged on the inner wall of the outer sleeve in a sliding manner; the connecting piece is rotatably arranged on the inner wall of the inner sleeve and is suitable for fixing the thread end; the two connecting pieces of the two plug bodies on one row rotate in opposite directions; after the inner sleeve is pressed once, the connecting piece can clamp the wire end; after the inner sleeve is pressed again, the connecting piece can rotate around the vertical central shaft in the circumferential direction to adjust the orientation of the thread ends, so that the two thread ends in one row are far away from each other. Through the arrangement of the connecting piece, the wire ends inserted into the plug can be sequentially clamped along with the pressing times when the inner sleeve is pressed, and the wire ends can freely rotate.

Description

Circuit board assembly

Technical Field

The invention relates to the technical field of circuit boards, in particular to a circuit board assembly.

Background

Application No.: CN201220612993.4, publication (bulletin) No.: CN202896971U, a combined circuit board plugboard frame, the utility model discloses a combined circuit board plugboard frame; belongs to the technical field of plugboard frames; the technical key points of the circuit board are that the circuit board comprises a left support and a right support which correspond to each other, wherein side positioning convex strips and bottom bosses are arranged on the left support and the right support at intervals along the length direction, the circuit board is matched and fixed with the bottom bosses through the left support and the right support and the corresponding positioning convex strips, the left support and the right support are connected through a connecting mechanism, and the distance between the left support and the right support is 650-1200 mm; the utility model aims to provide a combined circuit board plugboard frame which has compact structure and convenient use and can be used for placing a circuit board with the length of 650-1200 mm; the device is used for carrying and storing the circuit boards.

In the prior art, the left and right supports and the positioning convex strips are arranged to be matched with the circuit board to achieve the carrying and storage work of the circuit board, but when the circuit board is fixedly used, the space on the circuit board is limited or the space for placing the circuit board is narrow, so that the plug of the circuit board is inconvenient to use, and in order to more efficiently utilize the space of the circuit board, the research and development of a circuit board assembly are necessary.

Disclosure of Invention

The invention aims to provide a circuit board assembly to solve the technical problems of inconvenient use and low space utilization rate of a circuit board plug in the prior art.

In order to solve the above technical problem, the present invention provides a circuit board assembly, including: a plurality of plug bodies, each plug body falls into two rows and arranges on the circuit board, the plug body includes: the outer sleeve, the inner sleeve and the connecting piece are hollow, and the inner sleeve is arranged on the inner wall of the outer sleeve in a sliding manner; the connecting piece is rotatably arranged on the inner wall of the inner sleeve and is suitable for fixing the thread end; the two connecting pieces of the two plug bodies on one row rotate in opposite directions; after the inner sleeve is pressed once, the connecting piece can clamp the thread end; after the inner sleeve is pressed again, the connecting piece can rotate around the vertical central shaft in the circumferential direction to adjust the orientation of the thread ends, so that the two thread ends in one row are far away from each other.

Furthermore, a first rotating groove, a second rotating groove and a sliding groove are formed in the inner wall of the outer sleeve, the first rotating groove is formed in one side close to the inner sleeve, and the second rotating groove is formed in the lower end of the outer sleeve; the two sliding grooves extend along the axial direction of the outer sleeve and are respectively communicated with the first rotating groove and the second rotating groove; the linkage assembly is slidably arranged on the inner wall of the outer sleeve; when the linkage assembly is pressed once, the linkage assembly slides into the sliding groove from the first rotating groove; when the linkage assembly is pressed for the second time, the linkage assembly slides into the second rotating groove from the sliding groove, and the inner sleeve can push the connecting piece to rotate by an angle larger than 180 degrees.

Further, the linkage assembly includes: the connecting block is fixed on the outer wall of the bottom end of the connecting piece and is in a disc shape; the two positioning blocks are respectively arranged on the outer wall of the connecting block in a sliding manner, and one positioning block corresponds to one sliding groove; when the connecting block slides from the sliding groove to the first rotating groove, the inner sleeve can push the connecting piece to slide upwards and then rotate in the circumferential direction; when the connecting block slides to the second rotating groove from the sliding groove, the inner sleeve can push the connecting piece to slide downwards and then rotate in the circumferential direction.

Furthermore, the outer wall of the connecting piece is provided with a spiral groove, and the spiral groove extends from the upper end to the lower end of the connecting piece; the rotation directions of the two spiral grooves of the two oppositely arranged connecting pieces are opposite; the inner wall of the inner sleeve is provided with a pushing block matched with the spiral groove; when the inner sleeve is pressed downwards, the pushing block can push the connecting piece to rotate circumferentially through the spiral groove.

Further, the spiral groove is annularly formed in the outer wall of the connecting piece, and the pushing block can push the connecting piece to rotate by an angle larger than 180 degrees and smaller than 200 degrees.

Furthermore, a clamping block is arranged on the inner wall of the connecting piece, the clamping block is linked with the positioning block, the clamping block is arranged in an arc shape, and the clamping block is attached to the inner wall of the connecting piece; the inner side wall of the clamping block is provided with a plurality of clamping grooves, and the apertures of the clamping grooves are increased from one end to the other end; wherein the thread end can be inserted and fixed in the corresponding clamping groove when the inner sleeve is pressed once.

Furthermore, two linkage grooves are formed in the side wall of the connecting block, and one positioning block is arranged in one linkage groove; a connecting rod is fixed on the inner side of any one of the positioning blocks, and the other end of the connecting rod is fixed on the inner side wall of the clamping block; a spring is arranged in each linkage groove, and two ends of each spring are respectively fixed on the bottom wall of the linkage groove and the inner side wall of the positioning block; wherein pushing the positioning block can push the clamping block to protrude out of the inner wall of the connecting piece.

Furthermore, an installation block is arranged in each sliding groove, the section of each installation block is in an isosceles triangle shape, and two waist edges of each installation block extend towards two sides respectively; when the positioning block slides in the sliding groove to the highest point of the mounting block, the connecting rod can push the clamping block to protrude out of the inner wall of the connecting piece.

Furthermore, a power supply block is arranged on the bottom wall of the second rotating groove and is electrically connected with the circuit board; the positioning block, the connecting rod and the clamping block are all made of conductive materials; when the positioning block slides into the second rotating groove, the wire end can be electrically connected with the circuit board.

Furthermore, the outer wall of the inner sleeve is provided with a locking block, the inner wall of the outer sleeve is provided with a locking groove matched with the locking block, and the locking block can be inserted into the locking groove when the inner sleeve is pressed and rotated.

The circuit board assembly has the beneficial effects that the wire end inserted into the plug can be clamped by pressing the inner sleeve once, and the wire end can freely rotate along with the inner sleeve by pressing the inner sleeve twice, so that the position of the wire end can be adjusted without moving the plug, an operator can conveniently comb the wire end, the operator can conveniently plug and unplug the corresponding plug, and the space of the circuit board is efficiently utilized. The invention has simple structure and convenient operation, can finish different functions by repeating single action, and is suitable for popularization.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a perspective view of a preferred embodiment of a circuit board assembly of the present invention;

FIG. 2 is a schematic view of the internal mechanism of the outer sleeve of the present invention;

FIG. 3 is an assembly view of the inner sleeve and connector of the present invention;

FIG. 4 is a schematic view of a first state of the helical groove of the connection of the present invention;

FIG. 5 is a schematic view of a helical groove of a connection of the present invention in a second state;

FIG. 6 is a schematic view of the clamping block of the present invention in a closed position;

FIG. 7 is a schematic view of the clamping block of the present invention in an expanded state;

FIG. 8 is a schematic view of a circuit board assembly of the present invention;

fig. 9 is a plan view of the wiring board of the present invention.

In the figure:

1. a plug body;

2. an outer sleeve; 21. a first rotating groove; 22. a second rotating groove; 220. a power supply block; 23. a sliding groove; 24. mounting blocks; 25. a guide groove;

3. an inner sleeve; 31. a locking block;

4. a connecting member; 41. a linkage assembly; 411. connecting blocks; 4110. a linkage groove; 412. positioning blocks; 4120. a connecting rod; 413. a spring; 42. a helical groove; 43. a clamping block; 431. and clamping the groove.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in fig. 1 to 9, the present invention provides a circuit board assembly including: the plug comprises a plurality of plug bodies 1, wherein each plug body 1 is divided into two rows and arranged on a circuit board, and the plug bodies 1 can clamp and fix wire ends inserted into the plug bodies 1 in the plug bodies 1 and are electrically connected with the circuit board. The plug body 1 is integrally of a cylindrical structure which is nested inside and outside, and the wire end can penetrate through a through hole in the plug body 1, so that the plug body 1 and a circuit board are electrically connected.

It should be pointed out that, when the circuit board that uses more is used fixedly at present stage, because the space on the circuit board is limited or the space of placing the circuit board is narrow and small and leads to the plug of circuit board to use inconveniently, simultaneously the end of a thread passes through the plug and inserts the back on the circuit board, can't adjust the position of end of a thread under the condition of not moving the plug to make the end of a thread become chaotic under the more condition of plug on the circuit board, neither make things convenient for operating personnel to plug corresponding plug, also do not have the efficient to utilize the circuit board space.

In order to solve the above problem, a plug body 1 for a circuit board is needed, which can fix and electrically connect the terminals with the circuit board, and also needs to rotate the circuit board after the plug body 1 is fixed, so that two adjacent terminals arranged in the same row can be arranged apart from each other, so as to comb the terminals. The specific plug body 1 adopts the following structure.

The plug body 1 includes: an outer sleeve 2, an inner sleeve 3 and a connecting piece 4. The outer sleeve 2, the inner sleeve 3 and the connecting piece 4 are hollow, the inner sleeve 3 is nested in the outer sleeve 2, the connecting piece 4 is nested in the inner sleeve 3, and the wire ends can penetrate through the inner wall of the connecting piece 4 to be clamped and fixed and electrically connected with the circuit board. Wherein the outer wall of the outer sleeve 2 is not electrically connected with the circuit board, an operator can hold the outer wall of the outer sleeve 2 to move the plug body 1, the inner sleeve 3 is suitable for being installed in the outer sleeve 2, the inner sleeve 3 is slidably arranged on the inner wall of the outer sleeve 2, and the inner sleeve 3 can axially rotate and axially slide along the inner wall of the outer sleeve 2 to switch the state of the plug body 1 to realize different functions; the rotatable setting of connecting piece 4 is at 3 inner walls of inner tube, and connecting piece 4 is suitable for fixed end of a thread, and connecting piece 4 can be along with the linkage of inner tube 3, realizes pressing from both sides tight end of a thread and changes the end of a thread orientation. The two connecting pieces 4 of the two plug bodies 1 on one row of the wiring ports of the circuit board rotate in opposite directions, after the outer sleeve 2 is connected to the circuit board, the inner sleeve 3 is pressed once, and the connecting pieces 4 can clamp the wire ends; and the inner sleeve 3 is pressed again, the connecting piece 4 can rotate around the vertical central shaft in the circumferential direction to adjust the orientation of the thread ends, so that the two thread ends on one row are far away from each other, the position of the thread ends is adjusted without moving the plug, an operator can conveniently comb the thread ends, the operator can conveniently plug and unplug the corresponding plug, and the space of the circuit board is efficiently utilized.

In order to facilitate the rotation and sliding of the connecting piece 4 on the inner wall of the outer sleeve 2, the inner wall of the outer sleeve 2 is provided with a first rotating groove 21, a second rotating groove 22 and a sliding groove 23. The first rotating groove 21 is arranged at one side close to the inner sleeve 3, the second rotating groove 22 is arranged at the lower end of the outer sleeve 2, the first rotating groove 21 and the second rotating groove 22 are arranged in parallel, and the groove widths of the first rotating groove 21 and the second rotating groove 22 are equal. The connecting element 4 can rotate in the first rotating groove 21 and the second rotating groove 22 respectively, and different working states can be switched when the connecting element 4 enters the second rotating groove 22 from the first rotating groove 21 and when the connecting element 4 retreats from the second rotating groove 22 to the first rotating groove 21. The two sliding grooves 23 extend along the axial direction of the outer sleeve 2, the sliding grooves 23 are respectively communicated with the first rotating groove 21 and the second rotating groove 22, and two guide grooves 25 are respectively formed at the positions where the two ends of the sliding grooves 23 are communicated with the first rotating groove 21 and the second rotating groove 22. The guide groove 25 can guide the link 4 from the first rotating groove 21 or the second rotating groove 22 into the sliding groove 23.

The connecting member 4 has a linkage assembly 41 at an end thereof adjacent to the first rotating groove 21, and the linkage assembly 41 is slidably disposed on the inner wall of the outer sleeve 2. Specifically, when the connector is not inserted into the plug body 1, the linkage component 41 is located at the first rotating groove 21, the connector is inserted into the plug body from the end of the connecting piece 4 away from the first rotating groove 21, the inner sleeve 3 is pressed once, the linkage component 41 slides into the sliding groove 23 from the first rotating groove 21 along the guide groove 25, the connector can be clamped by the linkage component 41 at the moment, the inner sleeve 3 is pressed twice, the linkage component 41 can be driven to penetrate through the sliding groove 23 and slide to the second rotating groove 22, the connector is still clamped, the linkage component 41 can rotate along with the inner sleeve 3, two connectors arranged in the same row can be driven to rotate away from each other, and the inner sleeve 3 can drive the connecting piece 4 to rotate by an angle greater than 180 degrees. When the plug body 1 needs to be released from the circuit board, the inner sleeve 3 is rotated to slide the connecting piece 4 into the sliding groove 23 through the guide groove 25 arranged between the second rotating groove 22 and the sliding groove 23, and then the connecting piece 4 is released from the wire end, and the wire end can be taken out from the plug body 1.

The following describes the structure of the link assembly 41 in detail, and the link assembly 41 includes: a connecting block 411 and two positioning blocks 412. The connecting block 411 is fixed on the outer wall of the bottom end of the connecting piece 4, the connecting block 411 is in a disc shape, and the thickness of the connecting block 411 is equal to the widths of the first rotating groove 21 and the second rotating groove 22. Connecting block 411 outer wall mirror image has been seted up two linkage groove 4110, two locating piece 412 slidable respectively sets up the outer wall of connecting block 411, and locating piece 412 and linkage groove 4110 looks adaptation, a locating piece 412 corresponds a linkage groove 4110, and linkage groove 4110 can guide locating piece 412 along connecting block 411 radial slide for in locating piece 412 protrusion connecting block 411 outer wall or the indentation linkage groove 4110. In addition, the thickness of the positioning block 412 is equal to the width of the first rotating groove 21 and the second rotating groove 22, and one positioning block 412 corresponds to one sliding groove 23, so that when the positioning block 412 protrudes out of the outer wall of the connecting block 411, the positioning block 412 can axially rotate along the first rotating groove 21 and the second rotating groove 22. When the linkage assembly 41 slides from the sliding groove 23 to the first rotating groove 21, the inner sleeve 3 can push the connecting piece 4 to rotate circumferentially towards the upper sliding shaft; when the linkage assembly 41 slides from the sliding groove 23 to the second rotating groove 22, the inner sleeve 3 can push the connecting member 4 to slide downward and rotate circumferentially.

In order to make inner skleeve 3 when following 2 inner walls endwise extensions of outer sleeve and rotating, can drive connecting piece 4 and rotate the inslot 22 internal rotations along first rotation groove 21 and second to and along sliding tray 23 endwise slip, a helicla flute 42 has been seted up to the outer wall of connecting piece 4, and helicla flute 42 is cyclic annular to be seted up the outer wall of connecting piece 4, just helicla flute 42 certainly the upper end of connecting piece 4 extends to the lower extreme, and the relative two helicla flutes 42's of connecting piece 4 in two plug bodies 1 that set up rotation direction is opposite, inner skleeve 3 inner wall be equipped with one simultaneously with the promotion piece of helicla flute 42 looks adaptation. When the inner sleeve 3 is pressed downwards, the outer wall of the inner sleeve 3 slides relative to the outer sleeve 2, the pushing block rotates along the spiral groove 42 to approach the linkage assembly 41, and meanwhile, the connecting piece 4 can rotate in the circumferential direction by pushing the pushing block through the spiral groove 42. In addition, the pushing block can push the connecting element 4 by a rotation angle greater than 180 degrees and less than 200 degrees, which is set to ensure that the travel of the linkage assembly 41 rotating in the second rotating groove 22 does not exceed the position where the thread ends are separated because of too large, and to achieve this effect, the angle formed by the starting and ending positions of the spiral groove 42 on the horizontal projection of the connecting element 4 should be greater than 180 degrees and less than 200 degrees.

In order to enable the inner wall of the linkage assembly 41 to clamp the thread end, the inner wall of the linkage assembly 41 is provided with a clamping block 43, the clamping block 43 is arranged in a circular arc shape, and the clamping block 43 can be attached to the inner wall of the connecting block 411. The clamping block 43 and the positioning block 412 are linked, and the positioning block 412 can push the clamping block 43 to protrude out of the inner wall of the connecting block 411 or retract to be attached to the inner wall of the connecting block 411. The inner side wall of the clamping block 43 is provided with a plurality of clamping grooves 431, the aperture of the clamping grooves 431 is increased from one end to the other end, in the embodiment, the clamping grooves 431 in the clamping block 43 are arranged in a clockwise direction from small to large, and each clamping groove 431 with different sizes can correspondingly clamp the thread end matched with the size of the clamping groove 431, so that the clamping block 43 can be matched with the thread ends with four different specifications, and when the inner sleeve 3 is pressed once, the thread end can be inserted into and fixed in the corresponding clamping groove 431.

In order to realize the effect of linking the positioning blocks 412 and the clamping blocks 43, two linking grooves 4110 are formed in the side wall of the connecting block 411, one positioning block 412 is disposed in one linking groove 4110, a connecting rod 4120 is fixed to the inner side of one positioning block 412, and the other end of the connecting rod 4120 is fixed to the inner side wall of one clamping block 43, so that when the positioning block 412 slides along the radial direction of the connecting block 411, the positioning block 412 can push the clamping block 43 to protrude or retract to the inner wall of the connecting block 411 through the connecting rod 4120. Meanwhile, each linkage groove 4110 is internally provided with a spring 413, and two ends of each spring 413 are respectively fixed to the bottom wall of the linkage groove 4110 and the inner side wall of the positioning block 412. When pressing from both sides tight piece 43 protrusion connecting block 411 inner wall, the end of a thread can be put into and press from both sides tight groove 431, and when locating piece 412 was loosened, spring 413 pushed up locating piece 412 along linkage groove 4110 outside protrusion connecting block 411 outer wall to make and press from both sides tight piece 43 and retract, the end of a thread was established between connecting block 411 inner wall and the tight groove 431 of clamp by the card this moment, thereby realized pressing from both sides tight effect with the end of a thread.

In order to realize the effect of pushing the positioning block 412, so that the positioning block 412 slides inwards along the radial direction of the connecting block 411 to further push the clamping groove 431, an installation block 24 is arranged in each sliding groove 23, the section of each installation block 24 is in an isosceles triangle shape, and two waist edges of each installation block 24 extend towards two sides respectively. When the positioning block 412 slides in the sliding groove 23 to the highest point of the mounting block 24, the connecting rod 4120 can push the clamping block 43 to protrude out of the inner wall of the connecting piece 4.

In order to enable the wire end to be electrically connected with the circuit board after being clamped, a power supply block 220 is arranged on the bottom wall of the second rotating groove 22, the power supply block 220 is electrically connected with the circuit board, and the positioning block 412, the connecting rod 4120 and the clamping block 43 are all made of conductive materials. When the positioning block 412 slides into the second rotating groove 22, the wire end can be electrically connected with the circuit board.

In order to ensure that the clamping groove 431 can maintain the state of clamping the thread end after the thread end is installed in the clamping groove 431, the outer wall of the inner sleeve 3 is provided with a locking block 31, and the inner wall of the outer sleeve 2 is provided with a locking groove matched with the locking block 31. The locking piece 31 can be inserted into the locking groove when the inner sleeve 3 is pressed and rotated. After the locking block 31 is inserted into the locking groove, the inner sleeve 3 and the outer sleeve 2 are in a relatively fixed state, and the inner sleeve 3 cannot axially rotate and cannot axially slide.

The working process of the circuit board assembly of the single-hand wiring in this embodiment is that, before the wire end is not installed, the positioning block 412 is placed in the first rotating groove 21, the pushing block is located at the uppermost initial position of the spiral groove 42, the inner sleeve 3 is rotated at the moment, and the pushing block can circumferentially push the side wall of the spiral groove 42, so that the inner sleeve 3 can push the connecting piece 4 to rotate synchronously. When the inner sleeve 3 is pressed, the pushing block can spirally slide down along the spiral groove 42 while the pushing link 4 is rotated. When the positioning block 412 slides to be attached to the guide groove 25, the guide groove 25 can guide the positioning block 412 to slide into the sliding groove 23, at the moment, the connecting piece 4 can slide along the sliding groove 23 and cannot rotate, and the pushing block and the spiral groove 42 are in a tightly holding state due to the fact that relative rotation cannot be achieved, so that the inner sleeve 3 can push the connecting piece 4 to slide synchronously. When the positioning block 412 slides in the sliding groove 23, the positioning block 412 can push the connecting rod 4120 to drive the clamping block 43 to gradually protrude out of the inner wall of the connecting block 411, when the positioning block 412 slides to the highest point of the mounting block 24, the clamping block 43 is completely opened, at this time, the wire end is adjusted to be in the proper clamping groove 431, the inner sleeve 3 is continuously pressed, the positioning block 412 can push the connecting rod 4120 to drive the clamping block 43 to gradually retract into the inner wall of the connecting block 411, and the wire end is clamped between the inner wall of the connecting block 411 and the clamping groove 431. When the positioning block 412 slides into the second rotating groove 22, the pushing block and the spiral groove 42 are released from the holding state, the inner sleeve 3 is pressed again, the pushing block can continuously slide downwards along the spiral groove 42 in a spiral mode, the connecting piece 4 is further pushed to rotate, and the clamping block 43 clamps the thread ends to rotate at the moment, so that the two thread ends in one row are far away from each other.

In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A circuit board assembly, comprising:

a plurality of plug bodies (1), each plug body (1) is divided into two rows and arranged on the circuit board,

the plug body (1) comprises: the outer sleeve (2), the inner sleeve (3) and the connecting piece (4) are hollow, and the inner sleeve (3) is arranged on the inner wall of the outer sleeve (2) in a sliding manner;

the connecting piece (4) is rotatably arranged on the inner wall of the inner sleeve (3), and the connecting piece (4) is suitable for fixing a thread end;

the two connecting pieces (4) of the two plug bodies (1) on one row rotate in opposite directions; wherein

After the inner sleeve (3) is pressed once, the connecting piece (4) can clamp the thread end;

after the inner sleeve (3) is pressed again, the connecting piece (4) can rotate around the vertical central shaft in the circumferential direction to adjust the direction of the thread ends, so that the two thread ends in one row are far away from each other.

2. A circuit board assembly as recited in claim 1,

a first rotating groove (21), a second rotating groove (22) and a sliding groove (23) are formed in the inner wall of the outer sleeve (2), the first rotating groove (21) is formed in one side close to the inner sleeve (3), and the second rotating groove (22) is formed in the lower end of the outer sleeve (2);

the two sliding grooves (23) extend along the axial direction of the outer sleeve (2), and the sliding grooves (23) are respectively communicated with the first rotating groove (21) and the second rotating groove (22);

the linkage assembly (41) is slidably arranged on the inner wall of the outer sleeve (2); wherein

When the press is pressed once, the linkage assembly (41) slides into the sliding groove (23) from the first rotating groove (21);

when the linkage assembly (41) is pressed for the second time, the linkage assembly (41) slides into the second rotating groove (22) from the sliding groove (23), and the inner sleeve (3) can push the connecting piece (4) to rotate by an angle larger than 180 degrees.

3. A circuit board assembly according to claim 2,

the linkage assembly (41) comprises: the connecting piece (411) is fixed on the outer wall of the bottom end of the connecting piece (4), and the connecting piece (411) is in a disc shape;

the two positioning blocks (412) are respectively arranged on the outer wall of the connecting block (411) in a sliding manner, and one positioning block (412) corresponds to one sliding groove (23); wherein

When the connecting block (411) slides from the sliding groove (23) to the first rotating groove (21), the inner sleeve (3) can push the connecting piece (4) to slide upwards and then rotate circumferentially;

when the connecting block (411) slides from the sliding groove (23) to the second rotating groove (22), the inner sleeve (3) can push the connecting piece (4) to slide downwards and then rotate in the circumferential direction.

4. A circuit board assembly according to claim 3,

the outer wall of the connecting piece (4) is provided with a spiral groove (42), and the spiral groove (42) extends from the upper end to the lower end of the connecting piece (4);

the rotation directions of the two spiral grooves (42) of the two connecting pieces (4) which are oppositely arranged are opposite;

the inner wall of the inner sleeve (3) is provided with a pushing block matched with the spiral groove (42); wherein

When the inner sleeve (3) is pressed downwards, the pushing block can push the connecting piece (4) to rotate circumferentially through the spiral groove (42).

5. A circuit board assembly according to claim 4,

the spiral groove (42) is annularly formed in the outer wall of the connecting piece (4), and the pushing block can push the connecting piece (4) to rotate by an angle larger than 180 degrees and smaller than 200 degrees.

6. A circuit board assembly according to claim 5,

a clamping block (43) is arranged on the inner wall of the connecting piece (4), the clamping block (43) is linked with the positioning block (412), the clamping block (43) is arranged in an arc shape, and the clamping block (43) is attached to the inner wall of the connecting piece (4);

a plurality of clamping grooves (431) are formed in the inner side wall of the clamping block (43), and the aperture of each clamping groove (431) is increased from one end to the other end; wherein

The thread end can be inserted and fixed in the corresponding clamping groove (431) when the inner sleeve (3) is pressed once.

7. A circuit board assembly according to claim 6,

two linkage grooves (4110) are formed in the side wall of the connecting block (411), and one positioning block (412) is arranged in one linkage groove (4110);

a connecting rod (4120) is fixed on the inner side of any one of the positioning blocks (412), and the other end of the connecting rod (4120) is fixed on the inner side wall of the clamping block (43);

a spring (413) is arranged in each linkage groove (4110), and two ends of the spring (413) are respectively fixed to the bottom wall of the linkage groove (4110) and the inner side wall of the positioning block (412); wherein

The pushing of the positioning block (412) can push the clamping block (43) to protrude out of the inner wall of the connecting piece (4).

8. A circuit board assembly according to claim 7,

an installation block (24) is arranged in each sliding groove (23), the section of each installation block (24) is in an isosceles triangle shape, and two waist edges of each installation block (24) extend towards two sides respectively;

when the positioning block (412) slides in the sliding groove (23) to the highest point of the mounting block (24), the connecting rod (4120) can push the clamping block (43) to protrude out of the inner wall of the connecting piece (4).

9. A circuit board assembly as recited in claim 8,

a power supply block (220) is arranged on the bottom wall of the second rotating groove (22), and the power supply block (220) is electrically connected with the circuit board; the positioning block (412), the connecting rod (4120) and the clamping block (43) are all made of conductive materials;

when the positioning block (412) slides into the second rotating groove (22), the wire end can be electrically connected with the circuit board.

10. A circuit board assembly according to claim 9,

the outer wall of the inner sleeve (3) is provided with a locking block (31), the inner wall of the outer sleeve (2) is provided with a locking groove matched with the locking block (31), wherein

The locking block (31) can be inserted into the locking groove when the inner sleeve (3) is pressed and rotated.