Terminal block

Abstract

The utility model discloses a terminal block, comprising an insulation housing provided with a front terminal groove and a rear terminal groove; the crimping terminal is arranged in the front terminal groove; the first signal terminal is arranged in the rear terminal groove, and the first signal terminal is provided with a first fixing part and a first contact part; the second signal terminal is arranged in the rear terminal groove, the second signal terminal is arranged behind the first signal terminal, the second signal terminal is provided with a second fixing part, a second bending part and a second contact part, and the front surface of the second contact part protrudes forwards to form a protruding part; the protruding part is in contact with the first contact part, and a concave space is formed between the rear surface of the second contact part and the rear surface of the protruding part; and the circuit board is arranged on the lower surface of the insulating shell. Therefore, the terminal block provided by the utility model can prevent the contact part of the terminal from being polluted by the soldering flux in the welding process.

Description

Technical Field

[0001] The utility model relates to a terminal block, in particular to a terminal block which can prevent a terminal contact portion from being contaminated by soldering flux during a welding process. Background Art

[0002] A terminal block is an electrical connector used to electrically connect wires. After the wires of each circuit component are inserted into the terminal block, the wire insertion openings of the metal clips inside the terminal block are clamped and contracted to clamp the wires, thereby achieving electrical connection between the circuit components.

[0003] Chinese Patent Publication No. 110416749 discloses "a terminal block", which includes a base body, a movable part, a metal elastic part, a first signal component and a second signal component. The base body has a first receiving groove and a second receiving groove. One end of the movable part has a supporting part, and the other end of the movable part has two rotating arms, and the two rotating arms connect the two sides of the base body. The metal elastic part is arranged in the first receiving groove, and one end of the metal elastic part has two first supporting parts. The first signal component is arranged in the second receiving groove, and one end of the first signal component has a first contact part and a second supporting part. The second signal component is arranged in the second receiving groove, and one end of the second signal component has a second contact part, and the second contact part contacts the first contact part and forms a signal circuit. When the movable part is pressed, the movable part drives the two first supporting parts to move, and the supporting part drives the second supporting part to move, so that the first contact part leaves the second contact part, and the signal circuit is in an open circuit state.

[0004] However, the base body is close to a substrate. During the soldering process, the solder on the substrate will release flux when passing through the furnace. The flux will flow along the terminal into the terminal contact portion and affect the terminal conduction function.

[0005] Therefore, it is necessary to provide a terminal block that can prevent the terminal contact portion from being contaminated by flux during the soldering process. Utility Model Content

[0006] The purpose of the utility model is to provide a terminal block in view of the defects and shortcomings of the prior art.

[0007] To achieve the above-mentioned purpose, the utility model discloses a terminal block, comprising: an insulating shell, provided with a front terminal slot and a rear terminal slot, a bottom of the insulating shell being provided with several slots; a movable part, arranged at the rear of the insulating shell; a crimping terminal, arranged in the front terminal slot, the crimping terminal being provided with a first welding portion, the first welding portion extending out of the slot; a first signal terminal, arranged in the rear terminal slot, the first signal terminal being arranged at the rear of the crimping terminal, the first signal terminal being provided with a first fixing portion, the top of the first fixing portion extending backward to form a first contact portion, the bottom of the first fixing portion extending downward to form a second welding portion, the second welding portion extending out of the slot; a second signal terminal, arranged in the rear terminal slot Inside, the second signal terminal is arranged behind the first signal terminal, the second signal terminal is provided with a second fixing portion, the top of the second fixing portion is bent forward and extended to form a second bending portion, the second bending portion is extended downward to form a second contact portion, the front surface of the second contact portion protrudes forward to form a protruding portion, the protruding portion is in contact with the first contact portion, and an inner concave space is formed between the rear surface of the second contact portion and the rear surface of the protruding portion, the bottom of the second fixing portion extends downward to form a third welding portion, and the third welding portion extends out of the slot; and a circuit board is arranged on the lower surface of the insulating shell, the circuit board is provided with a plurality of through holes, the first welding portion, the second welding portion and the third welding portion are respectively inserted into the plurality of through holes.

[0008] As a further improvement, the protruding portion is provided with two outwardly bent portions and a convex surface, the two outwardly bent portions are formed on the front surface of the second contact portion, the front surface of the second contact portion protrudes forward and then bends to one side to extend to form the outwardly bent portions, the two outwardly bent portions are opposite to each other, one end of the two outwardly bent portions extends to form the convex surface, the first contact portion of the first signal terminal contacts the convex surface, and the two outwardly bent portions and the inner side surface of the convex surface form the concave space.

[0009] As a further improvement, the upper surface of the bottom of the insulating shell extends upward to form a step portion, and the step portion is provided with a first step portion, a second step portion and a third step portion. The upper surface of the bottom of the insulating shell extends upward to form the first step portion, the second step portion and the third step portion, the second step portion is arranged at the front end of the first step portion, the third step portion is arranged at the front end of the second step portion, the first step portion and the second step portion are arranged between the second signal terminal, the bottom of the second contact portion of the second signal terminal abuts against the third step portion, the front surface of the third step portion is flush with the front surface of the second contact portion, and the protrusion extends out of the front surface of the third step portion.

[0010] As a further improvement, the insulating shell is provided with a rear portion, the lower portion of the rear portion extends forward to form a limiting portion, a gap is formed between the limiting portion and the first step portion of the step portion, the second fixing portion of the second signal terminal is arranged in the gap, and the third welding portion of the second signal terminal extends out of the gap and the slot.

[0011] As a further improvement, the bottom of the insulating shell, the rear portion of the insulating shell, the limiting portion of the insulating shell and the second fixing portion of the second signal terminal are surrounded to form a receiving space.

[0012] As a further improvement, the first step portion is provided with a recessed notch, and the second signal terminal is provided with a through groove passing through the front and rear surfaces of the second fixing portion, the through groove corresponds to the gap of the insulating shell, the through groove corresponds to the accommodating space and the notch of the step portion of the insulating shell, and the through groove connects the accommodating space and the notch.

[0013] As a further improvement, the first step portion, the second step portion, the second bent portion of the second signal terminal, the second contact portion and the concave space of the protruding portion of the step portion of the insulating housing form an escape space.

[0014] As a further improvement, a hollow portion penetrating the upper and lower surfaces of the second bending portion is provided in the middle of the second bending portion of the second signal terminal. The hollow portion corresponds to the protruding portion and is connected to the avoidance space.

[0015] As a further improvement, the front surface of the limiting portion is recessed backward to form a limiting groove, the rear surface of the second fixing portion of the second signal terminal extends backward to form several limiting blocks, and several of the limiting blocks are fixed to the limiting groove. The top of the first fixing portion extends backward to form a second extension portion, and the rear end of the second extension portion extends upward to form a third extension portion. The top of the third extension portion is bent backward to form a first bending portion. The rear end of the first bending portion extends obliquely to form a connecting portion, and the rear end of the connecting portion is bent downward to form a resting portion. The front end of the resting portion extends forward to form a fourth extension portion, and the front end of the fourth extension portion extends downward to form the first contact portion. The rear portion is provided with a rear end hole that passes through the front and rear surfaces of the rear portion, and the resting portion is arranged in the rear end hole, which is arranged above the limiting portion.

[0016] As a further improvement, a terminal block is provided, comprising: an insulating shell, provided with a front terminal slot and a rear terminal slot, a bottom of the insulating shell is provided with a first slot, a second slot and a third slot, the front terminal slot is connected to the first slot, and the rear terminal slot is connected to the second slot and the third slot; a movable part, connected to the insulating shell; a crimping terminal, provided with a base, a first welding part and a clamping part, the clamping part is arranged in the front terminal slot and connected to the movable part, the base is fixed in the first slot, and the first welding part extends out of the first slot; a first signal terminal is arranged in the rear terminal slot, the first signal terminal is provided with a first fixed A fixed portion, a first contact portion and a second welding portion, the first fixed portion is fixed in the second slot, the first contact portion is arranged in the rear terminal slot, and the second welding portion extends out of the second slot; a second signal terminal, provided with a second fixed portion, a second contact portion and a third welding portion, the second fixed portion is fixed in the third slot, the second contact portion is arranged in the rear terminal slot and corresponds to the first contact portion, and the second welding portion extends out of the second slot; and wherein a through slot is formed on the second fixed portion; wherein a front wall surface of the third slot forms a notch connected to the through slot, or a rear wall surface of the third slot forms a receiving space connected to the through slot.

[0017] As described above, the terminal block of this utility model utilizes an innovative structural design. The top of the second fixing portion bends forward and extends to form the second bent portion. This second bent portion increases the distance between the second contact portion and the third soldering portion. The front surface of the second contact portion extends forward to form the protrusion, which increases the space behind the second contact portion and is used to store solder flux. The bottom, rear, stopper, and second fixing portion of the insulating housing surround the receiving space, which increases the storage space for solder flux and reduces the height of solder flux. The second signal terminal is provided with a through-groove extending through the front and rear surfaces of the second fixing portion. The through-groove corresponds to the notch in the receiving space and the notch in the stepped portion of the insulating housing. The through-groove connects the receiving space and the notch in the stepped portion of the insulating housing. The through-groove and the notch increase the storage space for solder flux and reduce its height. The hollow portion extending through the upper and lower surfaces of the second bent portion is provided in the middle of the second bent portion. The hollowed portion is used to prevent flux from flowing between the first contact portion and the protrusion of the second signal terminal. The escape space is formed by the first step of the step portion of the insulating housing, the second step of the step portion of the insulating housing, the second bent portion of the second signal terminal, the second contact portion of the second signal terminal, and the concave space of the protrusion of the second signal terminal. This escape space allows flux to crawl onto the rear surface of the second contact portion. Therefore, the terminal block of this utility model can prevent flux contamination of the terminal contact portion during the soldering process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the terminal block of the present invention.

[0019] Figure 2 This is an exploded view of the terminal block of the present invention.

[0020] Figure 3 It is a partial three-dimensional diagram of the terminal block of the present invention.

[0021] Figure 4 The terminal block of the utility model is along Figure 3 A partial enlarged view of IV.

[0022] Figure 5 This is an exploded view of the insulating housing of the terminal block of the present invention.

[0023] Figure 6 This is a three-dimensional view of the outer shell of the insulating housing of the terminal block of the present invention.

[0024] Figure 7This is a three-dimensional diagram of the crimping terminal of the terminal block of the present invention.

[0025] Figure 8 This is a three-dimensional diagram of the first signal terminal of the terminal block of the present invention.

[0026] Figure 9 This is a three-dimensional view from another angle of the first signal terminal of the terminal block of the present invention.

[0027] Figure 10 This is a three-dimensional diagram of the second signal terminal of the terminal block of the present invention.

[0028] Figure 11 This is a three-dimensional view from another angle of the second signal terminal of the terminal block of the present invention.

[0029] The descriptions of the reference numerals in the figures are as follows.

[0030] Terminal block 100 Accommodation space 101

[0031] Avoidance space 102 Insulation shell 1

[0032] Housing 11 Main body 110

[0033] Top 111 Bottom 112

[0034] recess 1120 first slot 1121

[0035] Second slot 1122 Third slot 1123

[0036] Third positioning column 1124 front portion 113

[0037] Passage hole 1131 rear portion 114

[0038] rear end hole 1141 side 115

[0039] Opening 116 First positioning hole 117

[0040] Assembly hole 118 First positioning column 119

[0041] Side cover 12 slot 121

[0042] The second positioning post 122 and the first protrusion 123

[0043] Through hole 124 second protrusion 125

[0044] Second positioning hole 126 Wire slot 13

[0045] Front terminal slot 14 Rear terminal slot 15

[0046] Limiting portion 16 Limiting groove 161

[0047] Step 17 First step 171

[0048] Second step portion 172 Third step portion 173

[0049] Notch 174 Gap 18

[0050] Shaft connection hole 19 movable part 2

[0051] Pressing portion 21 Extending arm 22

[0052] Press block 23 Card slot 24

[0053] Shaft connection part 25 Press-fit terminal 3

[0054] Base 31 First curved portion 32

[0055] Clamping portion 33 Side wing portion 34

[0056] First extension portion 35 First assembly portion 36

[0057] Second bent portion 37 First welded portion 38

[0058] First signal terminal 4 First fixing portion 40

[0059] Second extension portion 41 Third extension portion 42

[0060] First bending portion 43 Connecting portion 44

[0061] Abutting portion 45 Fourth extending portion 46

[0062] First contact portion 47 Second assembly portion 48

[0063] Second soldering portion 49 Second signal terminal 5

[0064] Second fixing portion 51 Second bending portion 52

[0065] Second contact portion 53 Protruding portion 54

[0066] Outer curve 541 convex surface 542

[0067] Concave space 543 limit block 55

[0068] Through groove 56 Hollow portion 57

[0069] Third assembly portion 58 Third welding portion 59

[0070] First through hole 61 of circuit board 6

[0071] Second through hole 62 Third through hole 63

[0072] The third positioning hole 64 DETAILED DESCRIPTION

[0073] To explain in detail the technical content, structural features, objectives and effects of the terminal block 100 of the present invention, embodiments are given below with reference to the accompanying drawings for detailed description.

[0074] See also Figure 1 and Figure 2 The terminal block 100 of the present invention includes an insulating housing 1, a movable member 2, a crimping terminal 3, a first signal terminal 4, a second signal terminal 5, and a circuit board 6. The movable member 2 is disposed at the rear end of the insulating housing 1. The crimping terminal 3, the first signal terminal 4, and the second signal terminal 5 are disposed within the insulating housing 1. The crimping terminal 3 is disposed at the front end of the insulating housing 1, and the first signal terminal 4 is disposed behind the crimping terminal 3. The second signal terminal 5 is disposed behind the first signal terminal 4. The circuit board 6 is disposed on the lower surface of the insulating housing 1.

[0075] See also Figures 3 to 6 The insulating shell 1 is provided with an outer shell 11 and a side cover 12. The side cover 12 is arranged on one side of the outer shell 11. The outer shell 11 is provided with a main body 110, a top 111, a bottom 112, a front portion 113, a rear portion 114, a side portion 115, an opening 116, a first positioning hole 117, a plurality of assembly holes 118, a plurality of first positioning columns 119, a line groove 13, a front terminal groove 14, a rear terminal groove 15, a limiting portion 16, a step portion 17, a gap 18 and two shaft connection holes 19. The top of the main body 110 is defined as the top 111, and the bottom of the main body 110 is defined as the bottom 112. The top 111 corresponds to the bottom 112. The front portion 113 and the rear portion 114 are respectively provided at the front end and the rear end of the top 111, and the front portion 113 and the rear portion 114 are respectively provided at the front end and the rear end of the bottom 112. One side of the main body 110 is defined as the side portion 115, and the other side of the main body 110 is defined as the opening 116. The side portion 115 is connected between the front portion 113 and the rear portion 114. The side cover 12 is disposed at the position of the opening 116 and covers the opening 116.

[0076] The main body 110 of the housing 11 is provided with a first positioning hole 117 extending through the left and right sides of the main body 110. The first positioning hole 117 extends through the side portion 115 and communicates with the opening 116. The corresponding mechanism of the side cover 12 is secured within the first positioning hole 117 to position and secure the housing 11 and the side cover 12. The main body 110 of the housing 11 is provided with a plurality of assembly holes 118 extending through the left and right sides of the main body 110. The plurality of assembly holes 118 extend through the side portion 115. The corresponding mechanism of the crimping terminal 3 is secured within the plurality of assembly holes 118 to position and secure the insulating housing 1 and the crimping terminal 3. The corresponding mechanism of the first signal terminal 4 is secured within the plurality of assembly holes 118 to position and secure the insulating housing 1 and the first signal terminal 4. The corresponding mechanism of the second signal terminal 5 is secured within the plurality of assembly holes 118 to position and secure the insulating housing 1 and the second signal terminal 5. One side of the main body 110 protrudes toward the opening 116 to form a plurality of first positioning posts 119. The plurality of first positioning posts 119 are fixed to corresponding mechanisms of the side cover 12 to achieve positioning and retention of the housing 11 and the side cover 12. The main body 110 is provided with a slot 121 that passes through the left and right sides of the main body 110, and the slot 121 passes through the side portion 115. The slot 121 of the main body 110 is located above the first positioning hole 117. The corresponding mechanism of the crimping terminal 3 is provided in the slot 121. The slot 121 is also formed on the side cover 12, and the slot 121 passes through the side cover 12.

[0077] The wire groove 13 is formed between the front end of the lower surface of the top portion 111 and the top end of the inner side surface of the front portion 113. The front portion 113 is provided with a passage hole 1131 that passes through the front and rear surfaces of the front portion 113. The passage hole 1131 is connected to the wire groove 13. The front terminal groove 14 is formed between the top portion 111, the bottom portion 112, and the front portion 113. The wire groove 13 is connected to the front terminal groove 14. The crimping terminal 3 is disposed in the front terminal groove 14. The rear terminal groove 15 is formed between the top portion 111, the bottom portion 112, and the rear portion 114. The first signal terminal 4 and the second signal terminal 5 are disposed in the rear terminal groove 15.

[0078] The bottom 112 is provided with a recess 1120, a first slot 1121, a second slot 1122, a third slot 1123, and at least one third positioning post 1124. In this embodiment, the bottom 112 is provided with two third positioning posts 1124. The bottom 112 is recessed toward the side 115 to form the recess 1120. The corresponding mechanism of the side cover 12 is fixed in the recess 1120 to achieve positioning and retention of the housing 11 and the side cover 12. The bottom 112 is provided with a first slot 1121 extending through the upper and lower surfaces of the bottom 112. The crimping terminal 3 corresponds to the first slot 1121, and the crimping terminal 3 extends out of the first slot 1121. The bottom 112 is provided with a second slot 1122 extending through the upper and lower surfaces of the bottom 112. The first signal terminal 4 corresponds to the second slot 1122, and the first signal terminal 4 extends out of the second slot 1122. The bottom portion 112 is provided with a third slot 1123 extending through the upper and lower surfaces of the bottom portion 112. The second signal terminal 5 corresponds to the third slot 1123 and extends out of the third slot 1123. Two third positioning posts 1124 extend downward from the lower surface of the bottom portion 112. The two third positioning posts 1124 are fixed to corresponding structures on the circuit board 6 to position and secure the insulating housing 1 to the circuit board 6. In this embodiment, the first slot 1121, the second slot 1122, and the third slot 1123 constitute a plurality of slots.

[0079] The rear portion 114 is provided with a rear end hole 1141 that passes through the front and rear surfaces of the rear portion 114. The corresponding mechanism of the first signal terminal 4 is provided in the rear end hole 1141. The lower portion of the rear portion 114 extends forward to form the limiting portion 16. The limiting portion 16 is provided below the rear end hole 1141. The front surface of the limiting portion 16 is recessed backward to form a limiting groove 161. The limiting groove 161 is used to limit the position of the second signal terminal 5, and can increase the storage space for the flux and reduce the creeping height of the flux. The corresponding mechanism of the second signal terminal 5 is fixed in the limiting groove 161 to achieve the positioning and retention of the insulating housing 1 and the second signal terminal 5.

[0080] The upper surface of the bottom portion 112 extends upward to form the step portion 17. The step portion 17 includes a first step portion 171, a second step portion 172, and a third step portion 173. The upper surface of the bottom portion 112 of the insulating housing 1 extends upward to form the first step portion 171, the second step portion 172, and the third step portion 173. The second step portion 172 is located at the front end of the first step portion 171. The third step portion 173 is located at the front end of the second step portion 172. The first and second step portions 171, 172 are held by the second signal terminal 5. The front end of the second signal terminal 5 abuts against the third step portion 173. In this embodiment, the height of the first step portion 171 is higher than the height of the second step portion 172. The height of the second step portion 172 is higher than the height of the third step portion 173. The first step portion 171 includes a recessed notch 174. This recess 174 is used to increase the storage space for flux and reduce the height of flux creep.

[0081] A gap 18 is formed between the stopper 16 and the first step 171 of the step 17. This gap 18 communicates with the third slot 1123 of the bottom 112. The second signal terminal 5 is disposed within and extends beyond this gap 18. The front end of the main body 110 is recessed inward to form one pivot hole 19, and the front end of the side portion 115 is recessed inward to form another pivot hole 19. Corresponding mechanisms of the movable member 2 are disposed within these two pivot holes 19.

[0082] See also Figure 5The side cover 12 is provided with the slot 121, a second positioning post 122, a first protrusion 123, a through-hole 124, a second protrusion 125, and a plurality of second positioning holes 126. The side cover 12 is provided with the slot 121 running through the middle of both the left and right sides of the side cover 12. The slot 121 of the side cover 12 corresponds to the slot 121 of the housing 11. Corresponding mechanisms for the crimping terminals 3 are provided in the two slots 121. The middle portion of one side surface of the side cover 12 extends toward the main body 110 of the housing 11 to form the second positioning post 122. The slot 121 of the side cover 12 is located above the second positioning post 122. The second positioning post 122 is fixed to the first positioning hole 117 of the housing 11 to securely position the side cover 12 with the housing 11. The front end bottom portion of one side surface of the side cover 12 extends toward the main body 110 of the housing 11 to form the first protrusion 123. The first protrusion 123 is fixed to the recess 1120 of the bottom 112 of the housing 11 to position and secure the side cover 12 to the housing 11. The side cover 12 is provided with through holes 124 extending through the front ends of the left and right sides of the side cover 12. The through holes 124 are located above the first protrusion 123. The through holes 124 are sleeved into the shaft connection hole 19 of the housing 11. The rear end of one side of the side cover 12 extends toward the main body 110 of the housing 11 to form a second protrusion 125. The first protrusion 123 is fixed to the rear end hole 1141 of the rear portion 114 to position and secure the side cover 12 to the housing 11. The side cover 12 is provided with a plurality of second positioning holes 126 extending through the left and right sides of the side cover 12. The plurality of first positioning posts 119 of the housing 11 are fixed to the plurality of second positioning holes 126 to position and secure the housing 11 to the side cover 12.

[0083] See also Figure 2The movable part 2 is provided with a pressing portion 21, two extending arms 22, a pressure block 23, two card slots 24 and two axial connection portions 25. The left and right sides of the front end of the pressing portion 21 extend forward to form the two extending arms 22 respectively. The two extending arms 22 are respectively arranged on the outer side surface of the side portion 115 of the insulating shell 1 and the outer side surface of the side cover 12. The connection between the pressing portion 21 and the two extending arms 22 extends downward to form the pressure block 23. The pressure block 23 is used to press down the corresponding mechanism of the first signal terminal 4. The middle of the inner side surface of the two extending arms 22 is obliquely recessed inward to form the two card slots 24. The two card slots 24 correspond to the slots 121 of the side cover 12 and the slots 121 of the main body 110. The corresponding mechanism of the crimping terminal 3 passes through the two slots 121 and is arranged in the two card slots 24. The front ends of the inner side surfaces of the two extension arms 22 extend inwardly to form two shaft connection portions 25 . The two shaft connection portions 25 are mounted in the two shaft connection holes 19 of the insulating housing 1 .

[0084] See also Figure 7 The crimping terminal 3 is provided with a base 31, a first bent portion 32, a clamping portion 33, two side wings 34, a first extension portion 35, a plurality of first assembly portions 36, a second bent portion 37 and a first welding portion 38. The front end of the base 31 is bent upward and extended to form the first bent portion 32. The top of the first bent portion 32 extends obliquely upward to form the clamping portion 33. The left and right sides of the clamping portion 33 protrude outward respectively to form the two side wings 34. The two side wings 34 are respectively passed through the slot 121 of the side cover 12 and the slot 121 of the main body 110, and are arranged in the two slots 24 of the movable part 2.

[0085] One side of the rear end of the base 31 extends rearward to form the first extension portion 35. The front and rear ends of the first extension portion 35 extend toward the side portion 115 of the insulating housing 1 to form a plurality of first assembly portions 36. The plurality of first assembly portions 36 are fixed to the plurality of assembly holes 118 of the insulating housing 1 to achieve positioning and retention of the crimping terminal 3 and the insulating housing 1. The other side of the rear end of the base 31 bends downward and extends to form the second bent portion 37. The rear end of the second bent portion 37 extends downward to form the first soldering portion 38. The first soldering portion 38 extends out of the first slot 1121 of the bottom 112 of the insulating housing 1. The first soldering portion 38 is inserted into the corresponding mechanism of the circuit board 6.

[0086] See also Figure 8 and Figure 9The first signal terminal 4 has a first fixing portion 40, a second extending portion 41, a third extending portion 42, a first bending portion 43, a connecting portion 44, a supporting portion 45, a fourth extending portion 46, a first contact portion 47, a plurality of second assembling portions 48 and a second welding portion 49.

[0087] The top of the first fixing portion 40 extends rearward to form the second extension portion 41. The rear end of the second extension portion 41 extends upward to form the third extension portion 42. The top of the third extension portion 42 bends rearward to form the first bent portion 43. The rear end of the first bent portion 43 extends obliquely to form the connecting portion 44, which then bends downward to form the abutting portion 45. The front end of the abutting portion 45 extends forward to form the fourth extension portion 46. The front end of the fourth extension portion 46 extends downward to form the first contact portion 47. The first contact portion 47 contacts the corresponding structure of the second signal terminal 5. One side of the first fixing portion 40 extends toward the side 115 of the insulating housing 1 to form the second assembly portion 48. One side of the third extension portion 42 extends toward the side 115 of the insulating housing 1 to form the second assembly portion 48. Several second assembly portions 48 are fixed to the assembly holes 118 of the insulating housing 1 to secure the first signal terminal 4 to the insulating housing 1. The bottom of the first fixing portion 40 extends downward to form the second soldering portion 49. The second soldering portion 49 extends out of the second slot 1122 of the bottom 112 of the insulating housing 1. The second soldering portion 49 is inserted into a corresponding structure of the circuit board 6.

[0088] See also Figure 4 、 Figure 10 and Figure 11 The second signal terminal 5 has a second fixing portion 51 , a second bending portion 52 , a second contact portion 53 , a protruding portion 54 , a plurality of limit blocks 55 , a through slot 56 , a hollow portion 57 , a third assembly portion 58 and a third welding portion 59 .

[0089] The second fixing portion 51 is disposed within the gap 18 of the insulating housing 1. The top of the second fixing portion 51 bends forward and extends to form the second bent portion 52. The second bent portion 52 is used to increase the distance between the second contact portion 53 and the third welding portion 59. The second bent portion 52 extends downward to form the second contact portion 53. The bottom of the second contact portion 53 abuts against the third step 173 of the step portion 17 of the insulating housing 1. The front surface of the third step 173 of the step portion 17 of the insulating housing 1 is flush with the front surface of the second contact portion 53. The rear surface of the second contact portion 53 abuts against the front surface of the second step 172 of the step portion 17 of the insulating housing 1. The front surface of the second contact portion 53 protrudes forward to form the protrusion 54. The protrusion 54 contacts the first contact portion 47 of the first signal terminal 4. The protrusion 54 extends beyond the front surface of the third step 173 of the step portion 17 of the insulating housing 1.

[0090] The protrusion 54 is provided with two outer curved portions 541 and a convex surface 542. The two outer curved portions 541 are formed on the front surface of the second contact portion 53. The front surface of the second contact portion 53 protrudes forward and bends to one side to form the outer curved portions 541. The two outer curved portions 541 are opposite to each other. One end of the two outer curved portions 541 extends to form the convex surface 542. The first contact portion 47 of the first signal terminal 4 contacts the convex surface 542. The two outer curved portions 541 and the inner side surface of the convex surface 542 form a concave space 543. The concave space 543 is used to increase the rear space of the second contact portion 53. The protrusion 54 is used to accommodate flux. The concave space 543 is formed between the rear surface of the second contact portion 53 and the rear surface of the protrusion 54.

[0091] The bottom 112 of the insulating housing 1, the rear portion 114 of the insulating housing 1, the limiting portion 16 of the insulating housing 1, and the second fixing portion 51 of the second signal terminal 5 form a receiving space 101. The receiving space 101 is used to increase the storage space of the soldering flux and reduce the creeping height of the soldering flux.

[0092] The first step 171 of the step 17 of the insulating housing 1, the second step 172 of the step 17 of the insulating housing 1, the second bent portion 52 of the second signal terminal 5, the second contact portion 53 of the second signal terminal 5, and the concave space 543 of the protruding portion 54 of the second signal terminal 5 surround and form a relief space 102. The relief space 102 allows flux to creep onto the rear surface of the second contact portion 53.

[0093] The rear surface of the second fixing portion 51 extends rearward to form a plurality of limit blocks 55. The plurality of limit blocks 55 are fixed to the limit groove 161 of the limit portion 16 of the insulating housing 1 to achieve positioning and retention of the second signal terminal 5 and the insulating housing 1. The second signal terminal 5 is provided with a through groove 56 that passes through the front and rear surfaces of the second fixing portion 51. The through groove 56 corresponds to the gap 18 of the insulating housing 1. The through groove 56 corresponds to the receiving space 101 and the notch 174 of the step portion 17 of the insulating housing 1. The through groove 56 connects the receiving space 101 and the notch 174 of the step portion 17 of the insulating housing 1. The through groove 56 is used to increase the storage space for the flux and reduce the creeping height of the flux.

[0094] The middle of the second bent portion 52 is provided with a hollow portion 57 that extends through the upper and lower surfaces of the second bent portion 52. The hollow portion 57 corresponds to the protrusion 54 and is connected to the avoidance space 102. The hollow portion 57 is used to prevent flux from flowing between the first contact portion 47 and the protrusion 54 of the second signal terminal 5. One side of the second fixing portion 51 extends toward the side 115 of the insulating housing 1 to form the third assembly portion 58. The third assembly portion 58 is fixed to the assembly hole 118 of the insulating housing 1 to achieve positioning and retention of the second signal terminal 5 and the insulating housing 1. The bottom of the second fixing portion 51 extends downward to form the third soldering portion 59. The third soldering portion 59 extends beyond the gap 18 of the insulating housing 1 and the third slot 1123. The third soldering portion 59 is inserted into the corresponding structure of the circuit board 6.

[0095] See also Figure 2 The circuit board 6 is provided with a first through-hole 61, a second through-hole 62, a third through-hole 63, and at least one third positioning hole 64. In this embodiment, the circuit board 6 is provided with two third positioning holes 64. The circuit board 6 is provided with the first through-hole 61, the second through-hole 62, and the third through-hole 63 that pass through the upper and lower surfaces of the circuit board 6. The first soldering portion 38 of the crimping terminal 3 is inserted into the first through-hole 61, the second soldering portion 49 of the first signal terminal 4 is inserted into the second through-hole 62, and the third soldering portion 59 of the second signal terminal 5 is inserted into the third through-hole 63. The circuit board 6 is provided with two third positioning holes 64 that pass through the upper and lower surfaces of the circuit board 6. The two third positioning posts 1124 of the bottom 112 of the insulating housing 1 are fixed to the two third positioning holes 64 to achieve positioning and retention of the circuit board 6 and the insulating housing 1. In this embodiment, the first through-hole 61, the second through-hole 62, and the third through-hole 63 constitute a plurality of through-holes.

[0096] The second soldering portion 49 of the first signal terminal 4 is inserted into the second through-hole 62, and the third soldering portion 59 of the second signal terminal 5 is inserted into the third through-hole 63. Thus, the first signal terminal 4, the second signal terminal 5, and the circuit board 6 form a signal loop. When the movable member 2 is not pressed, the first contact portion 47 of the first signal terminal 4 and the protrusion 54 of the second signal terminal 5 contact each other, completing the signal loop and maintaining a continuous state.

[0097] Before a wire (not shown) is inserted into the passage hole 1131 of the insulating housing 1, the pressing portion 21 of the movable part 2 is pressed first, so that the movable part 2 rotates downward relative to the insulating housing 1. Because the two side wings 34 of the crimping terminal 3 are arranged in the two slots 24 of the movable part 2, during the rotation process, the clamping portion 33 of the crimping terminal 3 moves toward the base 31 of the crimping terminal 3, freeing up the space above the clamping portion 33. When the wire (not shown) passes through the passage hole 1131 of the insulating housing 1 and enters the wire groove 13, it can still continue to penetrate into the space above the clamping portion 33. Through the upward pressure of the clamping portion 33 of the crimping terminal 3, the wire (not shown) is clamped and connected to the crimping terminal 3, and the exposed wire (not shown) is hidden in the insulating housing 1.

[0098] When the pressing portion 21 of the movable member 2 is pressed, the pressing block 23 of the movable member 2 squeezes the abutment portion 45 of the first signal terminal 4. The abutment portion 45 of the first signal terminal 4 causes the fourth extension portion 46 of the first signal terminal 4 and the first contact portion 47 of the first signal terminal 4 to move forward. Consequently, the first contact portion 47 of the first signal terminal 4 separates from the protrusion 54 of the second signal terminal 5, and the first contact portion 47 of the first signal terminal 4 and the protrusion 54 of the second signal terminal 5 are no longer in contact with each other, indicating an open circuit state. This open circuit state indicates that the wire (not shown) has been inserted into the terminal block 100 of the present invention.

[0099] As described above, the terminal block 100 of the present invention utilizes an innovative structural design. The top of the second fixing portion 51 bends and extends forward to form the second bent portion 52. The second bent portion 52 increases the distance between the second contact portion 53 and the third soldering portion 59. The front surface of the second contact portion 53 extends forward to form the protrusion 54, which increases the space behind the second contact portion 53 and is used to accommodate soldering flux. The bottom 112 of the insulating housing 1, the rear portion 114 of the insulating housing 1, the stopper 16 of the insulating housing 1, and the second fixing portion 51 of the second signal terminal 5 define the receiving space 101. This space 101 increases the storage space for soldering flux and reduces the height of the flux. The second signal terminal 5 is provided with a through-slot 56 extending through the front and rear surfaces of the second fixing portion 51. The through-slot 56 corresponds to the receiving space 101 and the notch 174 of the step 17 of the insulating housing 1. The through-groove 56 connects the receiving space 101 with the notch 174 of the step portion 17 of the insulating housing 1. The through-groove 56 and the notch 174 are used to increase the storage space for flux and reduce the height of flux creeping. A hollow portion 57 is provided in the middle of the second bent portion 52, extending through the upper and lower surfaces of the second bent portion 52. The hollow portion 57 prevents flux from flowing between the first contact portion 47 and the protrusion 54 of the second signal terminal 5. The first step 171 of the step portion 17 of the insulating housing 1, the second step 172 of the step portion 17 of the insulating housing 1, the second bent portion 52 of the second signal terminal 5, the second contact portion 53 of the second signal terminal 5, and the concave space 543 of the protrusion 54 of the second signal terminal 5 form the escape space 102. The escape space 102 allows flux to creep along the rear surface of the second contact portion 53. Therefore, the terminal block 100 of the present invention can prevent the terminal contact portion from being contaminated by flux during the welding process.

Claims

1. A terminal block, characterized in that: include: An insulating shell is provided with a front terminal slot and a rear terminal slot, and a bottom of the insulating shell is provided with several slots; a movable part is provided at the rear of the insulating shell; a crimping terminal is provided in the front terminal slot, and the crimping terminal is provided with a first welding portion, and the first welding portion extends out of the slot; a first signal terminal is provided in the rear terminal slot, and the first signal terminal is provided at the rear of the crimping terminal, and the first signal terminal is provided with a first fixing portion, the top of the first fixing portion extends backward to form a first contact portion, and the bottom of the first fixing portion extends downward to form a second welding portion, and the second welding portion extends out of the slot; a second signal terminal is provided in the rear terminal slot, and the second signal terminal is provided Behind the first signal terminal, the second signal terminal is provided with a second fixing portion, the top of the second fixing portion is bent forward and extended to form a second bending portion, the second bending portion is extended downward to form a second contact portion, the front surface of the second contact portion protrudes forward to form a protruding portion, the protruding portion is in contact with the first contact portion, and an inner concave space is formed between the rear surface of the second contact portion and the rear surface of the protruding portion, the bottom of the second fixing portion extends downward to form a third welding portion, and the third welding portion extends out of the slot; and a circuit board is arranged on the lower surface of the insulating shell, the circuit board is provided with a plurality of through holes, the first welding portion, the second welding portion and the third welding portion are respectively inserted into the plurality of through holes.

2. The terminal block according to claim 1, wherein: The protruding portion is provided with two outwardly curved portions and a convex surface. The two outwardly curved portions are formed on the front surface of the second contact portion. The front surface of the second contact portion protrudes forward and then bends and extends to one side to form the outwardly curved portions. The two outwardly curved portions are opposite to each other. One end of the two outwardly curved portions extends to form the convex surface. The first contact portion of the first signal terminal contacts the convex surface. The two outwardly curved portions and the inner side surface of the convex surface form the concave space.

3. The terminal block according to claim 2, wherein: The upper surface of the bottom of the insulating shell extends upward to form a step portion, and the step portion is provided with a first step portion, a second step portion and a third step portion. The upper surface of the bottom of the insulating shell extends upward to form the first step portion, the second step portion and the third step portion. The second step portion is arranged at the front end of the first step portion, and the third step portion is arranged at the front end of the second step portion. The first step portion and the second step portion are arranged between the second signal terminal. The bottom of the second contact portion of the second signal terminal abuts against the third step portion. The front surface of the third step portion is flush with the front surface of the second contact portion, and the protrusion extends out of the front surface of the third step portion.

4. The terminal block according to claim 3, wherein: The insulating shell is provided with a rear portion, the lower portion of the rear portion extends forward to form a limiting portion, a gap is formed between the limiting portion and the first step portion of the step portion, the second fixing portion of the second signal terminal is arranged in the gap, and the third welding portion of the second signal terminal extends out of the gap and one of the slots.

5. The terminal block according to claim 4, wherein: The bottom of the insulating housing, the rear portion of the insulating housing, the limiting portion of the insulating housing, and the second fixing portion of the second signal terminal surround and form a receiving space.

6. The terminal block according to claim 5, wherein: The first step portion is provided with a recessed notch, and the second signal terminal is provided with a through groove penetrating the front and rear surfaces of the second fixing portion, the through groove corresponding to the gap of the insulating shell, the through groove corresponding to the receiving space and the notch of the step portion of the insulating shell, and the through groove connecting the receiving space and the notch.

7. The terminal block according to claim 3, wherein: The first step portion of the step portion of the insulating housing, the second step portion, the second bending portion of the second signal terminal, the second contact portion, and the concave space of the protruding portion surround and form an escape space.

8. The terminal block according to claim 7, wherein: A hollow portion is provided in the middle of the second bending portion of the second signal terminal, penetrating the upper and lower surfaces of the second bending portion. The hollow portion corresponds to the protruding portion and is connected to the avoidance space.

9. The terminal block according to claim 4, wherein: The front surface of the limiting portion is recessed backward to form a limiting groove, and the rear surface of the second fixing portion of the second signal terminal extends backward to form several limiting blocks, and the several limiting blocks are fixed to the limiting groove, the top of the first fixing portion extends backward to form a second extension portion, and the rear end of the second extension portion extends upward to form a third extension portion, the top of the third extension portion is bent backward to form a first bending portion, the rear end of the first bending portion is obliquely extended to form a connecting portion, the rear end of the connecting portion is bent downward to form a resting portion, the front end of the resting portion extends forward to form a fourth extension portion, and the front end of the fourth extension extends downward to form the first contact portion, and the rear portion is provided with a rear end hole that passes through the front and rear surfaces of the rear portion, the resting portion is arranged at the rear end hole, and the rear end hole is arranged above the limiting portion.

10. A terminal block, characterized in that: include: An insulating shell is provided with a front terminal slot and a rear terminal slot, a bottom of the insulating shell is provided with a first slot, a second slot and a third slot, the front terminal slot is connected to the first slot, and the rear terminal slot is connected to the second slot and the third slot; a movable part is connected to the insulating shell; a crimping terminal is provided with a base, a first welding part and a clamping part, the clamping part is provided in the front terminal slot and connected to the movable part, the base is fixed in the first slot, and the first welding part extends out of the first slot; a first signal terminal is provided in the rear terminal slot, the first signal terminal is provided with a first fixing part, a first contact part and A second welding portion, the first fixing portion is fixed in the second slot, the first contact portion is arranged in the rear terminal slot, and the second welding portion extends out of the second slot; a second signal terminal, provided with a second fixing portion, a second contact portion and a third welding portion, the second fixing portion is fixed in the third slot, the second contact portion is arranged in the rear terminal slot and corresponds to the first contact portion, and the second welding portion extends out of the second slot; and wherein a through slot is formed on the second fixing portion; wherein a front wall surface of the third slot forms a notch connected to the through slot, or a rear wall surface of the third slot forms a receiving space connected to the through slot.

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