A press-fit device and electronic device

Abstract

The application discloses a press-fit device and an electronic device. The press-fit device comprises a terminal and a clamping piece. The terminal comprises a receiving portion provided with an opening on the outer circumferential surface of the terminal. The clamping piece is arranged on the receiving portion and has a clamping portion. At least a part of the clamping portion is movably protruded from the receiving portion to the opening of the receiving portion and protrudes from the outer circumferential surface of the terminal. When an external force is applied to the receiving portion, at least a part of the clamping portion is retracted into the receiving portion. When the external force disappears, at least a part of the clamping portion protrudes from the outer circumferential surface of the terminal again. The terminal is used to pass through a through hole of a circuit board and is clamped to the circuit board by the clamping portion to limit the movement of the terminal. The press-fit device improves the convenience of the connection between the terminal and the circuit board, avoids the use of screws, reduces the risk of deformation of the circuit board, and reduces the need for multiple locking.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic connecting devices, and in particular to a press-fit device and an electronic device. Background Art

[0002] Most of the existing smart bracelets and watches use magnetic charging. Figure 26 and Figure 27 The connection inside the shell is to use two metal pillars 203 that are molded into the shell, and the pins 200 are welded to the conductive contacts on the back of the circuit board (not in the Figure 26 The outer shell and the circuit board are fixed together (as shown above) and are pressed into contact with the metal pillar 203 to form an electrical connection between the three. The surrounding area still requires additional plastic pillars 202 and holes on the circuit board. Screws 201 are then used to penetrate the holes and screw into the plastic pillars 202 to fix the circuit board. This arrangement takes up space and increases costs. At the same time, after the screws 201 are locked, the risk of deformation of the circuit board will increase. The conductive contact on the back of the circuit board is close to the plastic pillar, making pre-tinning difficult during welding. Once a problem occurs, it is inconvenient to repair. At the same time, the existing technology uses multiple locking to achieve the fixing of the shell and the circuit board, and the assembly process is cumbersome.

[0003] For example, in the prior art, utility model publication number CN215225187U discloses a highly waterproof sports bracelet comprising a housing and a cover plate disposed at the bottom of the housing. Sleeves are welded to the four corners of the housing, and the tails of fixing bolts disposed at the four corners of the cover are located within the mounting holes of the sleeves to secure the housing and the cover plate. The sports bracelet in CN215225187U employs a similar structure as described above.

[0004] In the prior art, when the terminal is connected to the circuit board, a screw hole is set on the terminal, and then a screw is passed through the circuit board and screwed into the screw hole, and then the terminal can be connected to the circuit board. However, this installation method is very inconvenient and also causes the risk of deformation of the circuit board. Summary of the Invention

[0005] The object of the present invention is to provide a press-fit device and an electronic device for improving the convenience of connecting a terminal to a circuit board, avoiding the need for multiple locking due to the use of screws, and also reducing the risk of deformation of the circuit board.

[0006] The purpose of the present invention is achieved by the following technical solutions:

[0007] A press-fit device for mounting to a through-hole of a circuit board, comprising:

[0008] A terminal, the terminal comprising a receiving portion, the receiving portion being provided with an opening located on an outer peripheral surface of the terminal;

[0009] A clamping member is provided in the accommodating portion, and the clamping member has a clamping portion, at least a portion of the clamping portion movably protrudes from the outer peripheral surface of the terminal from the accommodating portion toward the opening of the accommodating portion, so that at least a portion of the clamping portion retracts into the accommodating portion after being subjected to a force outside the accommodating portion and protrudes from the outer peripheral surface of the terminal again after the force disappears. The terminal is used to pass through the through hole of the circuit board, and the circuit board is clamped by the clamping portion to limit the movement of the terminal.

[0010] Preferably, the clamping portion includes a lower clamping portion, the outer surface of which is an inclined surface whose height gradually increases from bottom to top, and when the press-fit device passes through the through hole of the circuit board, the lower clamping portion is clamped on the lower surface of the circuit board.

[0011] Preferably, the clamping member has a plurality of lower clamping portions, the outer peripheral surface of the terminal is provided with a plurality of openings spaced apart along the circumferential direction, and the plurality of lower clamping portions are provided in a one-to-one correspondence with the plurality of openings.

[0012] Preferably, the clamping portion includes an upper clamping portion corresponding to the lower clamping portion and located above the lower clamping portion, and the upper clamping portion is used to clamp the upper surface of the circuit board and cooperate with the lower clamping portion to limit the movement of the terminal in the upper and lower directions.

[0013] Preferably, the circuit board is provided with a conductive contact electrically connected to the press-fit device at the through hole, and the terminal is a conductor and is used to electrically connect the conductive contact;

[0014] The opening includes an upper opening and a lower opening spaced apart on the outer peripheral surface of the terminal, the upper clamping portion and the lower clamping portion movably protrude from the outer peripheral surface of the terminal from the upper opening and the lower opening of the accommodating portion corresponding thereto, respectively, and a convex rib for abutting against a conductive contact piece in the through hole of the circuit board is provided on the outer peripheral surface of the terminal located between the upper opening and the lower opening.

[0015] Preferably, the accommodating portion is a cavity extending upward from the lower end of the terminal;

[0016] The clamping member includes a connecting portion and a plurality of elastic claws connected to the same side of the connecting portion, each of the elastic claws is respectively provided with an upper clamping portion and a lower clamping portion, and the upper clamping portion and the lower clamping portion of each elastic claw protrude from the outer peripheral surface of the terminal from one of the openings.

[0017] Preferably, each of the elastic claws is provided with a convex portion located between the upper clamping portion and the lower clamping portion, and the convex portion is used to abut against the conductive contact piece in the through hole of the circuit board.

[0018] Preferably, the heights of the upper clamping portion and the lower clamping portion protruding from the outer peripheral surface of the terminal are greater than the height of the protruding portion protruding from the outer peripheral surface of the terminal.

[0019] Preferably, the free ends of the plurality of elastic claws of the clamping member abut against the inner edge of the opening of the accommodating portion, and the upper clamping portion and the lower clamping portion have a tendency to move toward the outer peripheral surface of the terminal.

[0020] Preferably, a limiting portion is provided on the outer peripheral surface of the terminal, and the limiting portion is used to clamp the upper surface of the circuit board and cooperate with the lower clamping portion to limit the movement of the clamping member in the up and down directions.

[0021] Preferably, the clamping member includes a connecting portion and a plurality of elastic claws connected to the same side of the connecting portion, each of the elastic claws is respectively provided with a lower clamping portion, the free ends of the plurality of elastic claws of the clamping member abut against the inner edge of the opening of the accommodating portion, and the lower clamping portion has a tendency to move toward the outer peripheral surface of the terminal.

[0022] Preferably, a rib for abutting against an inner wall of the through hole of the circuit board is provided on an outer peripheral surface of the terminal located between the limiting portion and the opening of the accommodating portion.

[0023] Preferably, the clamping member further comprises an elastic member located in the accommodating portion, and the elastic member elastically supports the lower clamping portion so that the lower clamping portion has a tendency to move toward the outer peripheral surface of the terminal.

[0024] Preferably, the lower holding portion includes a stop portion and an end portion, the elastic member connects the stop portion and elastically supports the stop portion, the stop portion is used to abut against the inner edge of the opening of the accommodating portion to limit the lower holding portion from continuing to move outward, and the end portion is arranged on the stop portion and is used to pass through the opening of the accommodating portion to hold the lower surface of the circuit board.

[0025] Preferably, the lower holding portion includes a limiting bead, and the opening of the accommodating portion is a circular hole with a diameter smaller than that of the limiting bead, so that the limiting bead cannot completely protrude from the outer peripheral surface of the terminal.

[0026] Preferably, the press-fit device further comprises an end cover, which is arranged on the lower end surface of the terminal to limit the retaining member from escaping from the accommodating portion.

[0027] Preferably, the clamping member further comprises a rotating shaft rotatably arranged at the accommodating portion, and the lower clamping portion is fixed on the rotating shaft.

[0028] Preferably, the press-fit device further comprises an end cover, an elastic member and a driving plate, wherein the end cover is arranged at the lower end of the terminal, and the two ends of the elastic member respectively abut against the end cover and the driving plate so that the driving plate has a tendency to move away from the end cover, and the lower holding portion comprises a holding end and a driving end, wherein the holding end movably protrudes from the outer peripheral surface of the terminal, and the driving end abuts against the driving plate;

[0029] When the clamping end of the lower clamping portion is subjected to a force from outside the accommodating portion, the clamping end retracts into the accommodating portion, and the driving end drives the driving plate to move downward;

[0030] When the force acting on the holding end of the lower holding portion from outside the accommodating portion disappears, the elastic member forces the driving plate and the driving end to move upward, and forces the holding end to protrude from the outer peripheral surface of the terminal.

[0031] An electronic device, characterized in that it comprises: a housing, a circuit board and a press-fit device as described in any one of the above, the housing being fixedly connected to the circuit board through the press-fit device, the press-fit device comprising a terminal, the upper end of the terminal being embedded in the housing and exposed outside the housing, the circuit board being provided with a conductive contact electrically connected to the press-fit device at a through hole, the terminal being a conductor and being used to electrically connect the conductive contact.

[0032] Compared with the prior art, the beneficial effects of the present invention include at least:

[0033] By providing a clamping piece, when the terminal is inserted into the through hole of the circuit board, at least a part of the clamping portion retracts into the accommodating portion after being subjected to a force outside the accommodating portion and protrudes out of the outer peripheral surface of the terminal again after the force disappears. The terminal is used to pass through the through hole of the circuit board and is clamped on the circuit board by the clamping portion to limit the movement of the terminal, so that the circuit board and the terminal do not need to be fixed with screws, which improves the convenience of connecting the terminal to the circuit board, avoids the situation where multiple locking is required due to the use of screws, and also reduces the risk of deformation of the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a cross-sectional view of the first press-fit device according to an embodiment of the present invention after being installed on a circuit board;

[0035] Figure 2 1 is a schematic structural diagram of a first press-fit device according to an embodiment of the present invention;

[0036] Figure 3 yes Figure 2 Schematic diagram of the structure of the middle card holder;

[0037] Figure 4is a cross-sectional view of a second press-fit device of an embodiment of the present application after being mounted to a circuit board;

[0038] Figure 5 is a structural schematic diagram of the second press-fit device of the embodiment of the present application;

[0039] Figure 6 is Figure 5 a structural schematic diagram of a middle holding member;

[0040] Figure 7 is a cross-sectional view of a third press-fit device of an embodiment of the present application after being mounted to a circuit board;

[0041] Figure 8 is a structural schematic diagram of the third press-fit device of the embodiment of the present application;

[0042] Figure 9 is Figure 8 a structural schematic diagram of a middle holding member;

[0043] Figure 10 is a cross-sectional view of a fourth press-fit device of an embodiment of the present application before being mounted to a circuit board;

[0044] Figure 11 is a cross-sectional view of the fourth press-fit device of the embodiment of the present application while being mounted to a circuit board;

[0045] Figure 12 is a cross-sectional view of the fourth press-fit device of the embodiment of the present application after being mounted to a circuit board;

[0046] Figure 13 is a structural schematic diagram of the fourth press-fit device of the embodiment of the present application;

[0047] Figure 14 is a structural schematic diagram of the fourth press-fit device of the embodiment of the present application;

[0048] Figure 15 is a cross-sectional view of a fifth press-fit device of an embodiment of the present application before being mounted to a circuit board;

[0049] Figure 16 is a cross-sectional view of the fifth press-fit device of the embodiment of the present application while being mounted to a circuit board;

[0050] Figure 17 is a cross-sectional view of the fifth press-fit device of the embodiment of the present application after being mounted to a circuit board;

[0051] Figure 18 is a structural schematic diagram of the fifth press-fit device of the embodiment of the present application;

[0052] Figure 19is a partial structural diagram of a fifth press-fit device according to an embodiment of the present invention;

[0053] Figure 20 is a cross-sectional view of a sixth press-fit device according to an embodiment of the present invention before being installed on a circuit board;

[0054] Figure 21 is a cross-sectional view of a sixth press-fit device according to an embodiment of the present invention being installed on a circuit board;

[0055] Figure 22 is a cross-sectional view of the sixth press-fit device according to an embodiment of the present invention after being installed on a circuit board;

[0056] Figure 23 1 is a schematic diagram of the overall structure of a sixth press-fit device according to an embodiment of the present invention;

[0057] Figure 24 is a partial structural diagram of a sixth press-fit device according to an embodiment of the present invention;

[0058] Figure 25 A schematic structural diagram of a circuit board in an embodiment of the present invention;

[0059] Figure 26 is a schematic diagram of the overall external structure of an electronic device in an embodiment of the present invention or an electronic device in the prior art;

[0060] Figure 27 It is a schematic diagram of an explosion of an electronic device in the prior art.

[0061] In the figure: 1. circuit board; 2. through hole; 3. terminal; 30. opening; 301. upper opening; 302. lower opening; 4. holding member; 400. lower holding portion; 401. elastic claw; 402. upper holding portion; 403. connecting portion; 5. accommodating portion; 6. conductive contact member; 7. rib; 8. convex portion; 9. free end; 10. limiting portion; 11. elastic member; 4041. stop portion; 4042. end portion; 4003. limiting bead; 12. end cover; 13. rotating shaft; 14. driving plate; 405. holding end; 406. driving end; 15. housing; 201. screw; 202. plastic column; 203. metal column. DETAILED DESCRIPTION

[0062] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concepts of the example embodiments to those skilled in the art. Identical reference numerals in the drawings represent identical or similar structures, and thus repeated descriptions thereof will be omitted.

[0063] The expression position and direction of the words described in the present application are illustrated by taking the drawings as an example, but changes can also be made according to needs, and the changes are included in the protection scope of the present application.

[0064] The present application provides a press-fit device for mounting to a through hole 2 of a circuit board 1, comprising a terminal 3 and a clamping piece 4.

[0065] As shown in Figures 1 to 24 , Figure 25 , the terminal 3 has opposite upper and lower ends, and the terminal 3 comprises a receiving portion 5 provided with an opening 30 on the outer circumferential surface of the terminal 3, and the receiving portion 5 can be close to the lower end of the terminal 3. The receiving portion 5 can be a groove, a blind hole or the like structure opened on the outer circumferential surface of the terminal 3, or a cavity extending upward from the lower end of the terminal 3 and having the opening 30 on the outer circumferential surface of the terminal 3.

[0066] The clamping piece 4 is arranged in the receiving portion 5, and the clamping piece 4 has a clamping portion, at least a part of the clamping portion protruding out of the outer circumferential surface of the terminal 3 from the receiving portion 5 to the opening 30 of the receiving portion 5, so that at least a part of the clamping portion is retracted into the receiving portion 5 after being subjected to an external force outside the receiving portion 5 and protrudes out of the outer circumferential surface of the terminal 3 again after the external force disappears. The terminal 3 is used to pass through the through hole 2 of the circuit board 1, and the clamping portion is clamped to the circuit board 1 to limit the movement of the terminal 3.

[0067] Specifically, when the terminal 3 is inserted into the through hole 2 of the circuit board 1, at least a part of the clamping portion is retracted into the receiving portion 5 after being extruded by the inner wall of the through hole 2 when entering the through hole 2, and protrudes out of the outer circumferential surface of the terminal 3 again after coming out of the lower end of the through hole 2, so that after the terminal 3 passes through the through hole 2 of the circuit board 1, the clamping portion clamps the circuit board 1 to limit the movement of the terminal 3. Compared with the prior art in which the terminal 3 is fixed to the circuit board 1 by screws, the structure used in the present embodiment improves the convenience of connecting the terminal 3 to the circuit board 1, avoids the need to use screws 201 to fix, thereby avoiding the need to lock multiple times, and also reduces the risk of deformation of the circuit board 1.

[0068] In a specific embodiment, as shown in Figures 1 to 9 , Figure 27As shown, the clamping portion includes a lower clamping portion 400. The outer surface of the lower clamping portion 400 is a slope that gradually increases in height from the bottom to the top. When the press-fit device passes through the through hole 2 of the circuit board 1, the lower clamping portion 400 is clamped on the lower surface of the circuit board 1. It should be noted that the portion where the lower clamping portion 400 contacts the circuit board 1 preferably has a smooth transition to avoid scratching and damaging the circuit board 1. The inclined surface of the lower clamping portion 400 ensures that the shape of the lower clamping portion 400 provides a high degree of guidance when the terminal 3 is inserted into the through hole 2, and does not cause hard compression with the inner wall of the through hole 2, thereby damaging the lower clamping portion 400.

[0069] In one embodiment, Figures 1 to 9 、 Figure 25 As shown, the clamping member 4 has a plurality of lower clamping portions 400 , and a plurality of openings 30 are formed on the outer peripheral surface of the terminal 3 . The plurality of lower clamping portions 400 are arranged in a one-to-one correspondence with the plurality of openings 30 . Multiple openings 30 are distributed at circumferential intervals along the outer peripheral surface of the terminal 3, and each opening 30 of the accommodating portion 5 is respectively provided with a lower clamping portion 400. The spaced arrangement of multiple lower clamping portions 400 makes the terminal 3 more reliable when connected to the circuit board 1, and there will be no tilting. Specifically, when the terminal 3 is inserted into the through hole 2 of the circuit board 1, the lower clamping portion 400 will be squeezed with the inner wall of the through hole 2 after entering the through hole 2, and then the part of the lower clamping portion 400 protruding from the opening 30 will be completely retracted into the accommodating portion 5, and when the lower clamping portion 400 moves to the bottom outside the through hole 2, the lower clamping portion 400 moves again from the opening 30 to the outer peripheral surface protruding from the terminal 3, so that the lower clamping portion 400 is clamped on the lower surface of the circuit board 1 after the terminal 3 passes through the through hole 2 of the circuit board 1.

[0070] In one embodiment, Figures 1 to 6 、 Figure 25 As shown, the clamping portion includes an upper clamping portion 402 corresponding to the lower clamping portion 400 and located above the lower clamping portion 400. The upper clamping portion 402 is used to clamp the upper surface of the circuit board 1 and cooperate with the lower clamping portion 400 to limit the movement of the terminal 3 in the up and down directions. Specifically, a lower clamping portion 400 is provided directly below each upper clamping portion 402. When the lower clamping portion 400 is clamped on the lower surface of the circuit board 1, the upper clamping portion 402 is clamped on the upper surface of the circuit board 1, thereby achieving the fixation of the terminal 3 to the circuit board 1 and improving the fixing effect. It should be noted that the outer surface of the upper clamping portion 402 is an inclined surface with a gradually increasing height from the top to the bottom, and the portion of the upper clamping portion 402 in contact with the circuit board 1 has a smooth transition, thereby preventing the upper clamping portion 402 from scratching and damaging the circuit board 1.

[0071] In one embodiment, Figures 1 to 3 、 Figure 25As shown, the circuit board 1 is provided with a conductive contact 6 electrically connected to the press-fit device at the through hole 2, the terminal 3 is a conductor and is used to electrically connect the conductive contact 6, the arrangement of the conductive contact 6 enables the terminal 3 to be electrically connected to the circuit board 1, the opening 30 includes an upper opening 301 and a lower opening 302 spaced apart on the outer peripheral surface of the terminal 3, the upper clamping portion 402 and the lower clamping portion 400 movably protrude from the outer peripheral surface of the terminal 3 from the upper opening 301 and the lower opening 302 of the corresponding accommodating portion 5 respectively, and a convex rib 7 is provided on the outer peripheral surface of the terminal 3 located between the upper opening 301 and the lower opening 302 for abutting against the conductive contact 6 in the through hole 2 of the circuit board 1. Specifically, when the lower clamping portion 400 is clamped on the lower surface of the circuit board 1, the upper clamping portion 402 is clamped on the upper surface of the circuit board 1, and the convex rib 7 abuts against the wire contact in the through hole 2. The provision of the convex rib 7 increases the holding force between the terminal 3 and the conductive contact 6 in the through hole 2, and also makes the electrical connection between the terminal 3 and the circuit board 1 more reliable, thereby improving the conductive performance and conductive reliability. At the same time, when the press-fit device of the present invention fixes the circuit board 1, one end of the terminal 3 can be connected to the housing 15 of the electronic device. The terminal 3 also has a conductive function. It is only necessary to pass the terminal 3 through the through hole 2 of the circuit board 1 so that the upper clamping portion 402 and the lower clamping portion 400 clamp the circuit board 1. Only one clamping is required to achieve the fixing of the housing 15 of the electronic device and the circuit board 1, and no secondary locking process is required, thereby reducing the number of assembly times and improving assembly efficiency.

[0072] In one embodiment, Figures 1 to 6 As shown, the accommodating portion 5 is a cavity extending upward from the lower end of the terminal 3, and the clamping member 4 includes a connecting portion 403 and a plurality of elastic claws 401 connected to the same side of the connecting portion 403, each of the elastic claws 401 is respectively provided with an upper clamping portion 402 and a lower clamping portion 400, and the upper clamping portion 402 and the lower clamping portion 400 of each elastic claw 401 protrude from the outer peripheral surface of the terminal 3 from one of the openings 30. The arrangement of the elastic claws 401 allows the clamping member 4 to shrink when the clamping member 4 is placed in the accommodating portion 5 to avoid hard squeezing with the accommodating portion 5, thereby causing damage. The clamping member 4 can also be inserted into the cavity thereof through the lower end of the terminal 3 for easy installation, and when the upper clamping portion 402 and the lower clamping portion 400 in the clamping member 4 move to protrude from the corresponding openings 30, the elastic claws 401 of the clamping member 4 abut against the inner wall of the accommodating portion 5.

[0073] In one embodiment, Figures 4 to 6 、 Figure 25As shown, the circuit board 1 is provided with a conductive contact 6 electrically connected to the press-fit device at the through hole 2, the terminal 3 and the clamping member 4 are conductors and are used to electrically connect the conductive contact 6, and each of the elastic claws 401 is respectively provided with a protrusion 8 located between the upper clamping portion 402 and the lower clamping portion 400, and the protrusion 8 is used to abut the conductive contact 6 in the through hole 2 of the circuit board 1. The protrusion 8 has a smooth transition and abuts against the wire contact in the through hole 2. The provision of the protrusion 8 increases the holding force between the terminal 3 and the conductive contact 6 in the through hole 2, and also makes the electrical connection between the clamping member 4, the terminal 3 and the circuit board 1 more reliable. The elastic claw 401 contacts the conductive contact 6, further increasing the contact area between the terminal 3 and the conductive contact 6, thereby improving the conductive performance and conductive reliability.

[0074] In one embodiment, Figures 4 to 6 、 Figure 25 As shown, the height of the outer peripheral surface of the protruding terminal 3 of the upper clamping portion 402 and the lower clamping portion 400 is greater than the height of the outer peripheral surface of the protruding terminal 3 of the protruding portion 8. Specifically, even when the protrusion 8 abuts against the conductive contact member 6 in the through hole 2, the protrusion 8 has a good abutting effect on the conductive contact member 6, and the upper clamping portion 402 and the lower clamping portion 400 of the clamping member 4 can also play a good fixing effect on the circuit board 1.

[0075] In one embodiment, Figures 1 to 3 As shown, the free ends 9 of the multiple elastic claws 401 of the clamping member 4 abut against the inner edge of the opening 30 of the accommodating portion 5, and the upper clamping portion 402 and the lower clamping portion 400 have a tendency to move toward the outer peripheral surface of the terminal 3. When the upper clamping portion 402 and the lower clamping portion 400 of the clamping member 4 protrude from the corresponding opening 30, the free ends 9 of the elastic claws 401 can abut against the inner edge of the opening 30 of the accommodating portion 5, thereby improving the stability of the clamping member 4 and preventing the free ends 9 of the elastic claws 401 from escaping from the opening 30. The tendency of the upper clamping portion 402 and the lower clamping portion 400 to move toward the outer peripheral surface of the terminal 3 also makes the clamping member 4 stably and firmly arranged in the accommodating portion 5 without loosening.

[0076] In one embodiment, Figures 7 to 9 、 Figure 25As shown, a limiting portion 10 is provided on the outer peripheral surface of the terminal 3. The limiting portion 10 can be an annular protrusion or a cut surface formed on the outer peripheral surface of the terminal 3. The limiting portion 10 is used to clamp the upper surface of the circuit board 1 and cooperate with the lower clamping portion 400 to limit the movement of the clamping member 4 in the up and down directions. Specifically, when the terminal 3 is inserted into the through hole 2, the lower clamping portion 400 clamps the lower surface of the circuit board 1, and the limiting portion 10 on the outer peripheral surface of the terminal 3 abuts against the upper surface of the circuit board 1, thereby cooperating with the lower clamping portion 400 to complete the fixation of the circuit board 1 and the terminal 3, which not only improves the convenience of connecting the terminal 3 with the circuit board 1, avoids the use of screws 201 for fixing, which requires multiple locking, but also reduces the risk of deformation of the circuit board 1, and the structure of the clamping member 4 can be further simplified.

[0077] In one embodiment, Figures 7 to 9 、 Figure 25 As shown, the clamping member 4 includes a connecting portion 403 and a plurality of elastic claws 401 connected to the same side of the connecting portion 403, and each of the elastic claws 401 is respectively provided with a lower clamping portion 400, and the free ends 9 of the plurality of elastic claws 401 of the clamping member 4 abut against the inner edge of the opening 30 of the accommodating portion 5, and the lower clamping portion 400 has a tendency to move toward the outer peripheral surface of the terminal 3. Specifically, the setting of the elastic claws 401 enables the clamping member 4 to be fixed more stably in the accommodating portion 5, preventing the free ends 9 of the elastic claws 401 from falling out of the opening 30, thereby reducing the loosening of the clamping member 4 and affecting the clamping effect on the circuit board 1.

[0078] In one embodiment, Figures 10 to 19 、 Figure 25 As shown, a rib 7 for abutting the inner wall of the through hole 2 of the circuit board 1 is provided on the outer peripheral surface of the terminal 3 located between the limiting portion 10 and the opening 30 of the accommodating portion 5. The rib 7 abuts against the wire contact in the through hole 2. The provision of the rib 7 increases the holding force between the terminal 3 and the conductive contact 6 in the through hole 2, and also makes the electrical connection between the terminal 3 and the circuit board 1 more reliable, thereby improving the conductive performance and conductive reliability.

[0079] In one embodiment, Figures 10 to 14 、 Figure 25The clamping member 4 further includes an elastic member 11 located in the accommodating portion 5. The elastic member 11 elastically supports the lower clamping portion 400 so that the lower clamping portion 400 has a tendency to move toward the outer peripheral surface of the terminal 3. Specifically, when the terminal 3 is inserted into the through hole 2, the lower clamping portion 400 is squeezed with the inner wall of the through hole 2, and then the lower clamping portion 400 moves toward one side of the accommodating portion 5 and squeezes the elastic member 11. When the terminal 3 moves downward until the lower clamping portion 400 is located below the circuit board 1, the lower clamping portion 400 returns to its initial state under the elastic support of the elastic member 11, and clamps the lower surface of the circuit board 1, which can also play the same or similar clamping role as the other embodiments mentioned above.

[0080] In one embodiment, Figures 10 to 14 、 Figure 25 As shown, the lower holding portion 400 includes a stop portion 4041 and an end portion 4042, the elastic member 11 connects the stop portion 4041 and elastically supports the stop portion 4041, the stop portion 4041 is used to abut the inner edge of the opening 30 of the accommodating portion 5 to limit the lower holding portion 400 from continuing to move outward, and the end portion 4042 is arranged on the stop portion 4041 and is used to pass through the opening 30 of the accommodating portion 5 to clamp the lower surface of the circuit board 1. Specifically, the setting of the stop portion 4041 can prevent the lower holding portion 400 from moving excessively outward when it is not squeezed by external force. It should be noted that the end 4042 has a smooth transition with the portion that holds the circuit board 1, thereby avoiding damage to the circuit board 1 when it comes into contact with the lower surface of the circuit board 1. The side of the end 4042 away from the stop portion 4041 is a guiding inclined surface, thereby facilitating the insertion of the terminal 3 into the through hole 2 and avoiding hard squeezing of the end 4042 with the through hole 2 and damaging the end 4042.

[0081] In one embodiment, Figures 20 to 24 As shown, the lower holding portion 400 includes a limiting bead 4003, the elastic member 11 can be a spring, and the opening 30 of the accommodating portion 5 is a circular hole with a diameter smaller than the diameter of the limiting bead 4003, so that the limiting bead 4003 cannot completely protrude from the outer peripheral surface of the terminal 3. The above structure can prevent the limiting column from moving excessively outward, thereby causing hard squeezing between the limiting column and the circuit board 1 and damaging the circuit board 1, thereby ensuring the convenience of the terminal 3 when inserted into the through hole 2.

[0082] In one embodiment, Figures 10 to 14 、 Figures 20 to 24 、 Figure 25As shown, the press-fit device further comprises an end cover 12 which can be threadedly connected to the lower end of the terminal 3 or can be snap-connected to the lower end of the terminal 3, and the embodiment is not limited in particular, and it is to be noted that the end cover 12 is smoothly transitioned away from the terminal 3 so as to avoid damaging the circuit board 1 when contact with the circuit board 1 occurs, and the end cover 12 limits the clamping piece 4 from being pulled out of the accommodating portion 5, thereby improving the stability of the clamping piece 4 and the fixing effect of the clamping piece 4 on the circuit board 1, so that the connection between the terminal 3 and the circuit board 1 is more reliable.

[0083] In a specific embodiment, as shown in Figures 15 to 19 the clamping piece 4 further comprises a rotating shaft 13 which is rotatably arranged at the accommodating portion 5, and the lower clamping portion 400 is fixed to the rotating shaft 13, and the press-fit device further comprises an end cover 12, an elastic member 11 and a driving plate 14, the end cover 12 is arranged at the lower end of the terminal 3, the two ends of the elastic member 11 abut against the end cover 12 and the driving plate 14 respectively so that the driving plate 14 has a tendency to move away from the end cover 12, the lower clamping portion 400 has a clamping end 405 and a driving end 406, the clamping end 405 of the lower clamping portion 400 protrudes from the outer circumferential surface of the terminal 3, and the driving end 406 abuts against the driving plate 14. Specifically, when the terminal 3 is inserted into the through hole 2, when the clamping end 405 of the lower clamping portion 400 is extruded by the inner wall of the through hole 2, the clamping end 405 of the lower clamping portion 400 is rotated to retract into the accommodating portion 5, the driving end 406 of the lower clamping portion 400 is rotated and drives the driving plate 14 to move downward, the driving plate 14 moves downward and extrudes the elastic member 11, and when the extrusion force of the clamping end 405 of the lower clamping portion 400 on the inner wall of the through hole 2 disappears, the elastic member 11 drives the driving plate 14 and the driving end 406 to move upward, and drives the clamping end 405 to protrude from the outer circumferential surface of the terminal 3.

[0084] As shown in Figure 25 and Figure 27 the present application further provides an electronic device, comprising a housing 15, a circuit board 1 and the press-fit device of any one of the above, the housing 15 and the circuit board 1 are fixedly connected together through the press-fit device, the upper end of the terminal 3 is embedded in the housing 15 and exposed outside the housing 15, the circuit board 1 is provided with a conductive contact 6 at the through hole 2 which is electrically connected with the press-fit device, and the terminal 3 is a conductive body and is used for electrically connecting the conductive contact 6.

[0085] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those of ordinary skill in the art can make changes, modifications, replacements and variations to the above embodiments without departing from the principles and spirit of the present application within the scope of the present application, and all of these changes should be within the protection scope of the claims of the present application.

Claims

1. A press-fit device for mounting to a through hole of a circuit board, characterized in that: include: A terminal, the terminal comprising a receiving portion, the receiving portion being provided with an opening located on an outer peripheral surface of the terminal; a clamping member disposed in the accommodating portion, the clamping member having a lower clamping portion, at least a portion of the lower clamping portion movably protruding from the outer peripheral surface of the terminal toward the opening of the accommodating portion from the accommodating portion, so that at least a portion of the lower clamping portion retracts into the accommodating portion after receiving a force from outside the accommodating portion and again protrudes from the outer peripheral surface of the terminal after the force disappears, the terminal is used to pass through the through hole of the circuit board, and the lower surface of the circuit board is clamped by the lower clamping portion to restrict movement of the terminal; In which, the clamping member includes a connecting portion and a plurality of elastic claws connected to the same side of the connecting portion, each of the elastic claws is respectively provided with a lower clamping portion, and the lower clamping portion has a tendency to move toward the outer peripheral surface of the terminal, and the outer surface of the lower clamping portion is an inclined surface whose height gradually increases from bottom to top.

2. The press-fit device according to claim 1, wherein: The clamping member has a plurality of lower clamping portions, and the outer peripheral surface of the terminal is provided with a plurality of openings distributed at intervals along the circumferential direction, and the plurality of lower clamping portions are arranged in a one-to-one correspondence with the plurality of openings.

3. The press-fit device according to claim 2, wherein: The clamping portion includes an upper clamping portion corresponding to the lower clamping portion and located above the lower clamping portion. The upper clamping portion is used to clamp the upper surface of the circuit board and cooperate with the lower clamping portion to limit the movement of the terminal in the upper and lower directions.

4. The press-fit device according to claim 3, wherein: The circuit board is provided with a conductive contact piece electrically connected to the press-fit device at the through hole, and the terminal is a conductor and is used to electrically connect the conductive contact piece; The opening includes an upper opening and a lower opening spaced apart on the outer peripheral surface of the terminal, the upper clamping portion and the lower clamping portion movably protrude from the outer peripheral surface of the terminal from the upper opening and the lower opening of the accommodating portion corresponding thereto, respectively, and a convex rib for abutting against a conductive contact piece in the through hole of the circuit board is provided on the outer peripheral surface of the terminal located between the upper opening and the lower opening.

5. The press-fit device according to claim 4, wherein: The receiving portion is a cavity extending upward from the lower end of the terminal; Each of the elastic claws is provided with an upper holding portion and a lower holding portion, and the upper holding portion and the lower holding portion of each elastic claw protrude from the outer peripheral surface of the terminal through the opening.

6. The press-fit device according to claim 5, wherein: Each of the elastic claws is provided with a convex portion located between the upper clamping portion and the lower clamping portion, and the convex portion is used to abut against the conductive contact piece in the through hole of the circuit board.

7. The press-fit device according to claim 6, wherein: The heights of the upper clamping portion and the lower clamping portion protruding from the outer peripheral surface of the terminal are greater than the height of the protruding portion protruding from the outer peripheral surface of the terminal.

8. The press-fit device according to claim 5, wherein: The free ends of the multiple elastic claws of the clamping member abut against the inner edge of the opening of the accommodating portion, and the upper clamping portion and the lower clamping portion have a tendency to move toward the outer peripheral surface of the terminal.

9. The press-fit device according to claim 2, wherein: A limiting portion is provided on the outer peripheral surface of the terminal, and the limiting portion is used to clamp the upper surface of the circuit board and cooperate with the lower clamping portion to limit the movement of the clamping member in the up and down directions.

10. The press-fit device according to claim 9, wherein The free ends of the multiple elastic claws of the clamping member abut against the inner edge of the opening of the accommodating portion.

11. The press-fit device according to claim 9, wherein A convex rib for abutting against the inner wall of the through hole of the circuit board is provided on the outer peripheral surface of the terminal located between the limiting portion and the opening of the accommodating portion.

12. The press-fit device according to claim 1, wherein The clamping member further includes a rotating shaft rotatably arranged at the accommodating portion, and the lower clamping portion is fixed on the rotating shaft.

13. The press-fit device according to claim 12, wherein: The press-fit device further includes an end cover, an elastic member, and a driving plate, wherein the end cover is disposed at the lower end of the terminal, and the two ends of the elastic member respectively abut against the end cover and the driving plate so that the driving plate has a tendency to move away from the end cover, and the lower holding portion includes a holding end and a driving end, wherein the holding end movably protrudes from the outer peripheral surface of the terminal, and the driving end abuts against the driving plate; When the clamping end of the lower clamping portion is subjected to a force from outside the accommodating portion, the clamping end retracts into the accommodating portion, and the driving end drives the driving plate to move downward; When the force acting on the holding end of the lower holding portion from outside the accommodating portion disappears, the elastic member forces the driving plate and the driving end to move upward, and forces the holding end to protrude from the outer peripheral surface of the terminal.

14. An electronic device, characterized in that: include: A housing, a circuit board, and a press-fit device according to any one of claims 1 to 13, wherein the housing is fixedly connected to the circuit board via the press-fit device, the upper ends of the terminals in the press-fit device are embedded in the housing and exposed outside the housing, the circuit board is provided with a conductive contact electrically connected to the press-fit device at a through hole, and the terminal is a conductor and is used to electrically connect the conductive contact.

Images